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 int iwl4965_is_empty_essid(const char *essid, int essid_len)
  91 {
  92         /* Single white space is for Linksys APs */
  93         if (essid_len == 1 && essid[0] == ' ')
  94                 return 1;
  95
  96         /* Otherwise, if the entire essid is 0, we assume it is hidden */
  97         while (essid_len) {
  98                 essid_len--;
  99                 if (essid[essid_len] != '\0')
 100                         return 0;
 101         }
 102
 103         return 1;
 104 }
 105
 106 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 107 {
 108         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 109         const char *s = essid;
 110         char *d = escaped;
 111
 112         if (iwl4965_is_empty_essid(essid, essid_len)) {
 113                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 114                 return escaped;
 115         }
 116
 117         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 118         while (essid_len--) {
 119                 if (*s == '\0') {
 120                         *d++ = '\\';
 121                         *d++ = '0';
 122                         s++;
 123                 } else
 124                         *d++ = *s++;
 125         }
 126         *d = '\0';
 127         return escaped;
 128 }
 129
 130 /*************** STATION TABLE MANAGEMENT ****
 131  * mac80211 should be examined to determine if sta_info is duplicating
 132  * the functionality provided here
 133  */
 134
 135 /**************************************************************/
 136
 137
 138
 139 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 140 {
 141         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 142
 143         if (hw_decrypt)
 144                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 145         else
 146                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 147
 148 }
 149
 150 /**
 151  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 152  *
 153  * NOTE:  This is really only useful during development and can eventually
 154  * be #ifdef'd out once the driver is stable and folks aren't actively
 155  * making changes
 156  */
 157 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 158 {
 159         int error = 0;
 160         int counter = 1;
 161
 162         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 163                 error |= le32_to_cpu(rxon->flags &
 164                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 165                                  RXON_FLG_RADAR_DETECT_MSK));
 166                 if (error)
 167                         IWL_WARNING("check 24G fields %d | %d\n",
 168                                     counter++, error);
 169         } else {
 170                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 171                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 172                 if (error)
 173                         IWL_WARNING("check 52 fields %d | %d\n",
 174                                     counter++, error);
 175                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 176                 if (error)
 177                         IWL_WARNING("check 52 CCK %d | %d\n",
 178                                     counter++, error);
 179         }
 180         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 181         if (error)
 182                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 183
 184         /* make sure basic rates 6Mbps and 1Mbps are supported */
 185         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 186                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 187         if (error)
 188                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 189
 190         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 191         if (error)
 192                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 193
 194         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 195                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 196         if (error)
 197                 IWL_WARNING("check CCK and short slot %d | %d\n",
 198                             counter++, error);
 199
 200         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 201                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 202         if (error)
 203                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 204                             counter++, error);
 205
 206         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 207                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 208         if (error)
 209                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 210                             counter++, error);
 211
 212         if (error)
 213                 IWL_WARNING("Tuning to channel %d\n",
 214                             le16_to_cpu(rxon->channel));
 215
 216         if (error) {
 217                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 218                 return -1;
 219         }
 220         return 0;
 221 }
 222
 223 /**
 224  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 225  * @priv: staging_rxon is compared to active_rxon
 226  *
 227  * If the RXON structure is changing enough to require a new tune,
 228  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 229  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 230  */
 231 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 232 {
 233
 234         /* These items are only settable from the full RXON command */
 235         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 236             compare_ether_addr(priv->staging_rxon.bssid_addr,
 237                                priv->active_rxon.bssid_addr) ||
 238             compare_ether_addr(priv->staging_rxon.node_addr,
 239                                priv->active_rxon.node_addr) ||
 240             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 241                                priv->active_rxon.wlap_bssid_addr) ||
 242             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 243             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 244             (priv->staging_rxon.air_propagation !=
 245              priv->active_rxon.air_propagation) ||
 246             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 247              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 248             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 249              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 250             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 251             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 252                 return 1;
 253
 254         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 255          * be updated with the RXON_ASSOC command -- however only some
 256          * flag transitions are allowed using RXON_ASSOC */
 257
 258         /* Check if we are not switching bands */
 259         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 260             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 261                 return 1;
 262
 263         /* Check if we are switching association toggle */
 264         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 265                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 266                 return 1;
 267
 268         return 0;
 269 }
 270
 271 /**
 272  * iwl4965_commit_rxon - commit staging_rxon to hardware
 273  *
 274  * The RXON command in staging_rxon is committed to the hardware and
 275  * the active_rxon structure is updated with the new data.  This
 276  * function correctly transitions out of the RXON_ASSOC_MSK state if
 277  * a HW tune is required based on the RXON structure changes.
 278  */
 279 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 280 {
 281         /* cast away the const for active_rxon in this function */
 282         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 283         DECLARE_MAC_BUF(mac);
 284         int rc = 0;
 285
 286         if (!iwl_is_alive(priv))
 287                 return -1;
 288
 289         /* always get timestamp with Rx frame */
 290         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 291
 292         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 293         if (rc) {
 294                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 295                 return -EINVAL;
 296         }
 297
 298         /* If we don't need to send a full RXON, we can use
 299          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 300          * and other flags for the current radio configuration. */
 301         if (!iwl4965_full_rxon_required(priv)) {
 302                 rc = iwl_send_rxon_assoc(priv);
 303                 if (rc) {
 304                         IWL_ERROR("Error setting RXON_ASSOC "
 305                                   "configuration (%d).\n", rc);
 306                         return rc;
 307                 }
 308
 309                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 310
 311                 return 0;
 312         }
 313
 314         /* station table will be cleared */
 315         priv->assoc_station_added = 0;
 316
 317         /* If we are currently associated and the new config requires
 318          * an RXON_ASSOC and the new config wants the associated mask enabled,
 319          * we must clear the associated from the active configuration
 320          * before we apply the new config */
 321         if (iwl_is_associated(priv) &&
 322             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 323                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 324                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 325
 326                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 327                                       sizeof(struct iwl_rxon_cmd),
 328                                       &priv->active_rxon);
 329
 330                 /* If the mask clearing failed then we set
 331                  * active_rxon back to what it was previously */
 332                 if (rc) {
 333                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 334                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 335                                   "configuration (%d).\n", rc);
 336                         return rc;
 337                 }
 338         }
 339
 340         IWL_DEBUG_INFO("Sending RXON\n"
 341                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 342                        "* channel = %d\n"
 343                        "* bssid = %s\n",
 344                        ((priv->staging_rxon.filter_flags &
 345                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 346                        le16_to_cpu(priv->staging_rxon.channel),
 347                        print_mac(mac, priv->staging_rxon.bssid_addr));
 348
 349         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 350         /* Apply the new configuration */
 351         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 352                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 353         if (rc) {
 354                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 355                 return rc;
 356         }
 357
 358         iwl_remove_station(priv, iwl_bcast_addr, 0);
 359         iwlcore_clear_stations_table(priv);
 360
 361         if (!priv->error_recovering)
 362                 priv->start_calib = 0;
 363
 364         iwl_init_sensitivity(priv);
 365
 366         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 367
 368         /* If we issue a new RXON command which required a tune then we must
 369          * send a new TXPOWER command or we won't be able to Tx any frames */
 370         rc = iwl4965_hw_reg_send_txpower(priv);
 371         if (rc) {
 372                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 373                 return rc;
 374         }
 375
 376         /* Add the broadcast address so we can send broadcast frames */
 377         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 378             IWL_INVALID_STATION) {
 379                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 380                 return -EIO;
 381         }
 382
 383         /* If we have set the ASSOC_MSK and we are in BSS mode then
 384          * add the IWL_AP_ID to the station rate table */
 385         if (iwl_is_associated(priv) &&
 386             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 387                 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 388                     == IWL_INVALID_STATION) {
 389                         IWL_ERROR("Error adding AP address for transmit.\n");
 390                         return -EIO;
 391                 }
 392                 priv->assoc_station_added = 1;
 393                 if (priv->default_wep_key &&
 394                     iwl_send_static_wepkey_cmd(priv, 0))
 395                         IWL_ERROR("Could not send WEP static key.\n");
 396         }
 397
 398         return 0;
 399 }
 400
 401 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 402 {
 403
 404         iwl_set_rxon_chain(priv);
 405         iwl4965_commit_rxon(priv);
 406 }
 407
 408 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 409 {
 410         struct iwl4965_bt_cmd bt_cmd = {
 411                 .flags = 3,
 412                 .lead_time = 0xAA,
 413                 .max_kill = 1,
 414                 .kill_ack_mask = 0,
 415                 .kill_cts_mask = 0,
 416         };
 417
 418         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 419                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 420 }
 421
 422 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 423 {
 424         int ret = 0;
 425         struct iwl_rx_packet *res;
 426         struct iwl_host_cmd cmd = {
 427                 .id = REPLY_SCAN_ABORT_CMD,
 428                 .meta.flags = CMD_WANT_SKB,
 429         };
 430
 431         /* If there isn't a scan actively going on in the hardware
 432          * then we are in between scan bands and not actually
 433          * actively scanning, so don't send the abort command */
 434         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 435                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 436                 return 0;
 437         }
 438
 439         ret = iwl_send_cmd_sync(priv, &cmd);
 440         if (ret) {
 441                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 442                 return ret;
 443         }
 444
 445         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 446         if (res->u.status != CAN_ABORT_STATUS) {
 447                 /* The scan abort will return 1 for success or
 448                  * 2 for "failure".  A failure condition can be
 449                  * due to simply not being in an active scan which
 450                  * can occur if we send the scan abort before we
 451                  * the microcode has notified us that a scan is
 452                  * completed. */
 453                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
 454                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 455                 clear_bit(STATUS_SCAN_HW, &priv->status);
 456         }
 457
 458         dev_kfree_skb_any(cmd.meta.u.skb);
 459
 460         return ret;
 461 }
 462
 463 /*
 464  * CARD_STATE_CMD
 465  *
 466  * Use: Sets the device's internal card state to enable, disable, or halt
 467  *
 468  * When in the 'enable' state the card operates as normal.
 469  * When in the 'disable' state, the card enters into a low power mode.
 470  * When in the 'halt' state, the card is shut down and must be fully
 471  * restarted to come back on.
 472  */
 473 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
 474 {
 475         struct iwl_host_cmd cmd = {
 476                 .id = REPLY_CARD_STATE_CMD,
 477                 .len = sizeof(u32),
 478                 .data = &flags,
 479                 .meta.flags = meta_flag,
 480         };
 481
 482         return iwl_send_cmd(priv, &cmd);
 483 }
 484
 485 static void iwl_clear_free_frames(struct iwl_priv *priv)
 486 {
 487         struct list_head *element;
 488
 489         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 490                        priv->frames_count);
 491
 492         while (!list_empty(&priv->free_frames)) {
 493                 element = priv->free_frames.next;
 494                 list_del(element);
 495                 kfree(list_entry(element, struct iwl_frame, list));
 496                 priv->frames_count--;
 497         }
 498
 499         if (priv->frames_count) {
 500                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 501                             priv->frames_count);
 502                 priv->frames_count = 0;
 503         }
 504 }
 505
 506 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 507 {
 508         struct iwl_frame *frame;
 509         struct list_head *element;
 510         if (list_empty(&priv->free_frames)) {
 511                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 512                 if (!frame) {
 513                         IWL_ERROR("Could not allocate frame!\n");
 514                         return NULL;
 515                 }
 516
 517                 priv->frames_count++;
 518                 return frame;
 519         }
 520
 521         element = priv->free_frames.next;
 522         list_del(element);
 523         return list_entry(element, struct iwl_frame, list);
 524 }
 525
 526 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 527 {
 528         memset(frame, 0, sizeof(*frame));
 529         list_add(&frame->list, &priv->free_frames);
 530 }
 531
 532 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 533                                 struct ieee80211_hdr *hdr,
 534                                 const u8 *dest, int left)
 535 {
 536
 537         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 538             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 539              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 540                 return 0;
 541
 542         if (priv->ibss_beacon->len > left)
 543                 return 0;
 544
 545         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 546
 547         return priv->ibss_beacon->len;
 548 }
 549
 550 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 551 {
 552         int i;
 553         int rate_mask;
 554
 555         /* Set rate mask*/
 556         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 557                 rate_mask = priv->active_rate_basic & 0xF;
 558         else
 559                 rate_mask = priv->active_rate_basic & 0xFF0;
 560
 561         /* Find lowest valid rate */
 562         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 563                                         i = iwl_rates[i].next_ieee) {
 564                 if (rate_mask & (1 << i))
 565                         return iwl_rates[i].plcp;
 566         }
 567
 568         /* No valid rate was found. Assign the lowest one */
 569         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 570                 return IWL_RATE_1M_PLCP;
 571         else
 572                 return IWL_RATE_6M_PLCP;
 573 }
 574
 575 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 576 {
 577         struct iwl_frame *frame;
 578         unsigned int frame_size;
 579         int rc;
 580         u8 rate;
 581
 582         frame = iwl_get_free_frame(priv);
 583
 584         if (!frame) {
 585                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 586                           "command.\n");
 587                 return -ENOMEM;
 588         }
 589
 590         rate = iwl4965_rate_get_lowest_plcp(priv);
 591
 592         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 593
 594         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 595                               &frame->u.cmd[0]);
 596
 597         iwl_free_frame(priv, frame);
 598
 599         return rc;
 600 }
 601
 602 /******************************************************************************
 603  *
 604  * Misc. internal state and helper functions
 605  *
 606  ******************************************************************************/
 607
 608 /**
 609  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
 610  *
 611  * return : set the bit for each supported rate insert in ie
 612  */
 613 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
 614                                     u16 basic_rate, int *left)
 615 {
 616         u16 ret_rates = 0, bit;
 617         int i;
 618         u8 *cnt = ie;
 619         u8 *rates = ie + 1;
 620
 621         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
 622                 if (bit & supported_rate) {
 623                         ret_rates |= bit;
 624                         rates[*cnt] = iwl_rates[i].ieee |
 625                                 ((bit & basic_rate) ? 0x80 : 0x00);
 626                         (*cnt)++;
 627                         (*left)--;
 628                         if ((*left <= 0) ||
 629                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
 630                                 break;
 631                 }
 632         }
 633
 634         return ret_rates;
 635 }
 636
 637 #ifdef CONFIG_IWL4965_HT
 638 static void iwl4965_ht_conf(struct iwl_priv *priv,
 639                             struct ieee80211_bss_conf *bss_conf)
 640 {
 641         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 642         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 643         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 644
 645         IWL_DEBUG_MAC80211("enter: \n");
 646
 647         iwl_conf->is_ht = bss_conf->assoc_ht;
 648
 649         if (!iwl_conf->is_ht)
 650                 return;
 651
 652         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 653
 654         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 655                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 656         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 657                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 658
 659         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 660         iwl_conf->max_amsdu_size =
 661                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 662
 663         iwl_conf->supported_chan_width =
 664                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 665         iwl_conf->extension_chan_offset =
 666                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 667         /* If no above or below channel supplied disable FAT channel */
 668         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
 669             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
 670                 iwl_conf->supported_chan_width = 0;
 671
 672         iwl_conf->tx_mimo_ps_mode =
 673                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 674         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 675
 676         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 677         iwl_conf->tx_chan_width =
 678                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 679         iwl_conf->ht_protection =
 680                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 681         iwl_conf->non_GF_STA_present =
 682                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 683
 684         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 685         IWL_DEBUG_MAC80211("leave\n");
 686 }
 687
 688 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 689                         u8 *pos, int *left)
 690 {
 691         struct ieee80211_ht_cap *ht_cap;
 692
 693         if (!sband || !sband->ht_info.ht_supported)
 694                 return;
 695
 696         if (*left < sizeof(struct ieee80211_ht_cap))
 697                 return;
 698
 699         *pos++ = sizeof(struct ieee80211_ht_cap);
 700         ht_cap = (struct ieee80211_ht_cap *) pos;
 701
 702         ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
 703         memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
 704         ht_cap->ampdu_params_info =
 705                 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
 706                 ((sband->ht_info.ampdu_density << 2) &
 707                         IEEE80211_HT_CAP_AMPDU_DENSITY);
 708         *left -= sizeof(struct ieee80211_ht_cap);
 709 }
 710 #else
 711 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
 712                                    struct ieee80211_bss_conf *bss_conf)
 713 {
 714 }
 715 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 716                         u8 *pos, int *left)
 717 {
 718 }
 719 #endif
 720
 721
 722 /**
 723  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
 724  */
 725 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
 726                                   enum ieee80211_band band,
 727                                   struct ieee80211_mgmt *frame,
 728                                   int left, int is_direct)
 729 {
 730         int len = 0;
 731         u8 *pos = NULL;
 732         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
 733         const struct ieee80211_supported_band *sband =
 734                                                 iwl_get_hw_mode(priv, band);
 735
 736         /* Make sure there is enough space for the probe request,
 737          * two mandatory IEs and the data */
 738         left -= 24;
 739         if (left < 0)
 740                 return 0;
 741         len += 24;
 742
 743         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 744         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
 745         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
 746         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
 747         frame->seq_ctrl = 0;
 748
 749         /* fill in our indirect SSID IE */
 750         /* ...next IE... */
 751
 752         left -= 2;
 753         if (left < 0)
 754                 return 0;
 755         len += 2;
 756         pos = &(frame->u.probe_req.variable[0]);
 757         *pos++ = WLAN_EID_SSID;
 758         *pos++ = 0;
 759
 760         /* fill in our direct SSID IE... */
 761         if (is_direct) {
 762                 /* ...next IE... */
 763                 left -= 2 + priv->essid_len;
 764                 if (left < 0)
 765                         return 0;
 766                 /* ... fill it in... */
 767                 *pos++ = WLAN_EID_SSID;
 768                 *pos++ = priv->essid_len;
 769                 memcpy(pos, priv->essid, priv->essid_len);
 770                 pos += priv->essid_len;
 771                 len += 2 + priv->essid_len;
 772         }
 773
 774         /* fill in supported rate */
 775         /* ...next IE... */
 776         left -= 2;
 777         if (left < 0)
 778                 return 0;
 779
 780         /* ... fill it in... */
 781         *pos++ = WLAN_EID_SUPP_RATES;
 782         *pos = 0;
 783
 784         /* exclude 60M rate */
 785         active_rates = priv->rates_mask;
 786         active_rates &= ~IWL_RATE_60M_MASK;
 787
 788         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
 789
 790         cck_rates = IWL_CCK_RATES_MASK & active_rates;
 791         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
 792                         active_rate_basic, &left);
 793         active_rates &= ~ret_rates;
 794
 795         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
 796                                  active_rate_basic, &left);
 797         active_rates &= ~ret_rates;
 798
 799         len += 2 + *pos;
 800         pos += (*pos) + 1;
 801         if (active_rates == 0)
 802                 goto fill_end;
 803
 804         /* fill in supported extended rate */
 805         /* ...next IE... */
 806         left -= 2;
 807         if (left < 0)
 808                 return 0;
 809         /* ... fill it in... */
 810         *pos++ = WLAN_EID_EXT_SUPP_RATES;
 811         *pos = 0;
 812         iwl4965_supported_rate_to_ie(pos, active_rates,
 813                                  active_rate_basic, &left);
 814         if (*pos > 0)
 815                 len += 2 + *pos;
 816
 817  fill_end:
 818         /* fill in HT IE */
 819         left -= 2;
 820         if (left < 0)
 821                 return 0;
 822
 823         *pos++ = WLAN_EID_HT_CAPABILITY;
 824         *pos = 0;
 825
 826         iwl_ht_cap_to_ie(sband, pos, &left);
 827
 828         if (*pos > 0)
 829                 len += 2 + *pos;
 830         return (u16)len;
 831 }
 832
 833 /*
 834  * QoS  support
 835 */
 836 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 837                                        struct iwl4965_qosparam_cmd *qos)
 838 {
 839
 840         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 841                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 842 }
 843
 844 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 845 {
 846         unsigned long flags;
 847
 848         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 849                 return;
 850
 851         if (!priv->qos_data.qos_enable)
 852                 return;
 853
 854         spin_lock_irqsave(&priv->lock, flags);
 855         priv->qos_data.def_qos_parm.qos_flags = 0;
 856
 857         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 858             !priv->qos_data.qos_cap.q_AP.txop_request)
 859                 priv->qos_data.def_qos_parm.qos_flags |=
 860                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 861         if (priv->qos_data.qos_active)
 862                 priv->qos_data.def_qos_parm.qos_flags |=
 863                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 864
 865 #ifdef CONFIG_IWL4965_HT
 866         if (priv->current_ht_config.is_ht)
 867                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 868 #endif /* CONFIG_IWL4965_HT */
 869
 870         spin_unlock_irqrestore(&priv->lock, flags);
 871
 872         if (force || iwl_is_associated(priv)) {
 873                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 874                                 priv->qos_data.qos_active,
 875                                 priv->qos_data.def_qos_parm.qos_flags);
 876
 877                 iwl4965_send_qos_params_command(priv,
 878                                 &(priv->qos_data.def_qos_parm));
 879         }
 880 }
 881
 882 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 883 {
 884         /* Filter incoming packets to determine if they are targeted toward
 885          * this network, discarding packets coming from ourselves */
 886         switch (priv->iw_mode) {
 887         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
 888                 /* packets from our adapter are dropped (echo) */
 889                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
 890                         return 0;
 891                 /* {broad,multi}cast packets to our IBSS go through */
 892                 if (is_multicast_ether_addr(header->addr1))
 893                         return !compare_ether_addr(header->addr3, priv->bssid);
 894                 /* packets to our adapter go through */
 895                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 896         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
 897                 /* packets from our adapter are dropped (echo) */
 898                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
 899                         return 0;
 900                 /* {broad,multi}cast packets to our BSS go through */
 901                 if (is_multicast_ether_addr(header->addr1))
 902                         return !compare_ether_addr(header->addr2, priv->bssid);
 903                 /* packets to our adapter go through */
 904                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 905         default:
 906                 break;
 907         }
 908
 909         return 1;
 910 }
 911
 912
 913
 914 /**
 915  * iwl4965_scan_cancel - Cancel any currently executing HW scan
 916  *
 917  * NOTE: priv->mutex is not required before calling this function
 918  */
 919 static int iwl4965_scan_cancel(struct iwl_priv *priv)
 920 {
 921         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 922                 clear_bit(STATUS_SCANNING, &priv->status);
 923                 return 0;
 924         }
 925
 926         if (test_bit(STATUS_SCANNING, &priv->status)) {
 927                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
 928                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
 929                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
 930                         queue_work(priv->workqueue, &priv->abort_scan);
 931
 932                 } else
 933                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
 934
 935                 return test_bit(STATUS_SCANNING, &priv->status);
 936         }
 937
 938         return 0;
 939 }
 940
 941 /**
 942  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
 943  * @ms: amount of time to wait (in milliseconds) for scan to abort
 944  *
 945  * NOTE: priv->mutex must be held before calling this function
 946  */
 947 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
 948 {
 949         unsigned long now = jiffies;
 950         int ret;
 951
 952         ret = iwl4965_scan_cancel(priv);
 953         if (ret && ms) {
 954                 mutex_unlock(&priv->mutex);
 955                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
 956                                 test_bit(STATUS_SCANNING, &priv->status))
 957                         msleep(1);
 958                 mutex_lock(&priv->mutex);
 959
 960                 return test_bit(STATUS_SCANNING, &priv->status);
 961         }
 962
 963         return ret;
 964 }
 965
 966 static void iwl4965_sequence_reset(struct iwl_priv *priv)
 967 {
 968         /* Reset ieee stats */
 969
 970         /* We don't reset the net_device_stats (ieee->stats) on
 971          * re-association */
 972
 973         priv->last_seq_num = -1;
 974         priv->last_frag_num = -1;
 975         priv->last_packet_time = 0;
 976
 977         iwl4965_scan_cancel(priv);
 978 }
 979
 980 #define MAX_UCODE_BEACON_INTERVAL       4096
 981 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 982
 983 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 984 {
 985         u16 new_val = 0;
 986         u16 beacon_factor = 0;
 987
 988         beacon_factor =
 989             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 990                 / MAX_UCODE_BEACON_INTERVAL;
 991         new_val = beacon_val / beacon_factor;
 992
 993         return cpu_to_le16(new_val);
 994 }
 995
 996 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 997 {
 998         u64 interval_tm_unit;
 999         u64 tsf, result;
1000         unsigned long flags;
1001         struct ieee80211_conf *conf = NULL;
1002         u16 beacon_int = 0;
1003
1004         conf = ieee80211_get_hw_conf(priv->hw);
1005
1006         spin_lock_irqsave(&priv->lock, flags);
1007         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1008         priv->rxon_timing.timestamp.dw[0] =
1009                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1010
1011         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1012
1013         tsf = priv->timestamp;
1014
1015         beacon_int = priv->beacon_int;
1016         spin_unlock_irqrestore(&priv->lock, flags);
1017
1018         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1019                 if (beacon_int == 0) {
1020                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1021                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1022                 } else {
1023                         priv->rxon_timing.beacon_interval =
1024                                 cpu_to_le16(beacon_int);
1025                         priv->rxon_timing.beacon_interval =
1026                             iwl4965_adjust_beacon_interval(
1027                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1028                 }
1029
1030                 priv->rxon_timing.atim_window = 0;
1031         } else {
1032                 priv->rxon_timing.beacon_interval =
1033                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1034                 /* TODO: we need to get atim_window from upper stack
1035                  * for now we set to 0 */
1036                 priv->rxon_timing.atim_window = 0;
1037         }
1038
1039         interval_tm_unit =
1040                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1041         result = do_div(tsf, interval_tm_unit);
1042         priv->rxon_timing.beacon_init_val =
1043             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1044
1045         IWL_DEBUG_ASSOC
1046             ("beacon interval %d beacon timer %d beacon tim %d\n",
1047                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1048                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1049                 le16_to_cpu(priv->rxon_timing.atim_window));
1050 }
1051
1052 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1053 {
1054         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1055                 IWL_ERROR("APs don't scan.\n");
1056                 return 0;
1057         }
1058
1059         if (!iwl_is_ready_rf(priv)) {
1060                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1061                 return -EIO;
1062         }
1063
1064         if (test_bit(STATUS_SCANNING, &priv->status)) {
1065                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1066                 return -EAGAIN;
1067         }
1068
1069         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1070                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1071                                "Queuing.\n");
1072                 return -EAGAIN;
1073         }
1074
1075         IWL_DEBUG_INFO("Starting scan...\n");
1076         priv->scan_bands = 2;
1077         set_bit(STATUS_SCANNING, &priv->status);
1078         priv->scan_start = jiffies;
1079         priv->scan_pass_start = priv->scan_start;
1080
1081         queue_work(priv->workqueue, &priv->request_scan);
1082
1083         return 0;
1084 }
1085
1086
1087 static void iwl_set_flags_for_band(struct iwl_priv *priv,
1088                                    enum ieee80211_band band)
1089 {
1090         if (band == IEEE80211_BAND_5GHZ) {
1091                 priv->staging_rxon.flags &=
1092                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1093                       | RXON_FLG_CCK_MSK);
1094                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1095         } else {
1096                 /* Copied from iwl4965_post_associate() */
1097                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1098                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1099                 else
1100                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1101
1102                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1103                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1104
1105                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1106                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1107                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1108         }
1109 }
1110
1111 /*
1112  * initialize rxon structure with default values from eeprom
1113  */
1114 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1115 {
1116         const struct iwl_channel_info *ch_info;
1117
1118         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1119
1120         switch (priv->iw_mode) {
1121         case IEEE80211_IF_TYPE_AP:
1122                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1123                 break;
1124
1125         case IEEE80211_IF_TYPE_STA:
1126                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1127                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1128                 break;
1129
1130         case IEEE80211_IF_TYPE_IBSS:
1131                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1132                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1133                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1134                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1135                 break;
1136
1137         case IEEE80211_IF_TYPE_MNTR:
1138                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1139                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1140                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1141                 break;
1142         default:
1143                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1144                 break;
1145         }
1146
1147 #if 0
1148         /* TODO:  Figure out when short_preamble would be set and cache from
1149          * that */
1150         if (!hw_to_local(priv->hw)->short_preamble)
1151                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1152         else
1153                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1154 #endif
1155
1156         ch_info = iwl_get_channel_info(priv, priv->band,
1157                                        le16_to_cpu(priv->staging_rxon.channel));
1158
1159         if (!ch_info)
1160                 ch_info = &priv->channel_info[0];
1161
1162         /*
1163          * in some case A channels are all non IBSS
1164          * in this case force B/G channel
1165          */
1166         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1167             !(is_channel_ibss(ch_info)))
1168                 ch_info = &priv->channel_info[0];
1169
1170         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1171         priv->band = ch_info->band;
1172
1173         iwl_set_flags_for_band(priv, priv->band);
1174
1175         priv->staging_rxon.ofdm_basic_rates =
1176             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1177         priv->staging_rxon.cck_basic_rates =
1178             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1179
1180         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1181                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1182         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1183         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1184         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1185         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1186         iwl_set_rxon_chain(priv);
1187 }
1188
1189 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1190 {
1191         if (mode == IEEE80211_IF_TYPE_IBSS) {
1192                 const struct iwl_channel_info *ch_info;
1193
1194                 ch_info = iwl_get_channel_info(priv,
1195                         priv->band,
1196                         le16_to_cpu(priv->staging_rxon.channel));
1197
1198                 if (!ch_info || !is_channel_ibss(ch_info)) {
1199                         IWL_ERROR("channel %d not IBSS channel\n",
1200                                   le16_to_cpu(priv->staging_rxon.channel));
1201                         return -EINVAL;
1202                 }
1203         }
1204
1205         priv->iw_mode = mode;
1206
1207         iwl4965_connection_init_rx_config(priv);
1208         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1209
1210         iwlcore_clear_stations_table(priv);
1211
1212         /* dont commit rxon if rf-kill is on*/
1213         if (!iwl_is_ready_rf(priv))
1214                 return -EAGAIN;
1215
1216         cancel_delayed_work(&priv->scan_check);
1217         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1218                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1219                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1220                 return -EAGAIN;
1221         }
1222
1223         iwl4965_commit_rxon(priv);
1224
1225         return 0;
1226 }
1227
1228 static void iwl4965_set_rate(struct iwl_priv *priv)
1229 {
1230         const struct ieee80211_supported_band *hw = NULL;
1231         struct ieee80211_rate *rate;
1232         int i;
1233
1234         hw = iwl_get_hw_mode(priv, priv->band);
1235         if (!hw) {
1236                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1237                 return;
1238         }
1239
1240         priv->active_rate = 0;
1241         priv->active_rate_basic = 0;
1242
1243         for (i = 0; i < hw->n_bitrates; i++) {
1244                 rate = &(hw->bitrates[i]);
1245                 if (rate->hw_value < IWL_RATE_COUNT)
1246                         priv->active_rate |= (1 << rate->hw_value);
1247         }
1248
1249         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1250                        priv->active_rate, priv->active_rate_basic);
1251
1252         /*
1253          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1254          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1255          * OFDM
1256          */
1257         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1258                 priv->staging_rxon.cck_basic_rates =
1259                     ((priv->active_rate_basic &
1260                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1261         else
1262                 priv->staging_rxon.cck_basic_rates =
1263                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1264
1265         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1266                 priv->staging_rxon.ofdm_basic_rates =
1267                     ((priv->active_rate_basic &
1268                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1269                       IWL_FIRST_OFDM_RATE) & 0xFF;
1270         else
1271                 priv->staging_rxon.ofdm_basic_rates =
1272                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1273 }
1274
1275 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1276 {
1277         unsigned long flags;
1278
1279         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1280                 return;
1281
1282         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1283                           disable_radio ? "OFF" : "ON");
1284
1285         if (disable_radio) {
1286                 iwl4965_scan_cancel(priv);
1287                 /* FIXME: This is a workaround for AP */
1288                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1289                         spin_lock_irqsave(&priv->lock, flags);
1290                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1291                                     CSR_UCODE_SW_BIT_RFKILL);
1292                         spin_unlock_irqrestore(&priv->lock, flags);
1293                         /* call the host command only if no hw rf-kill set */
1294                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1295                             iwl_is_ready(priv))
1296                                 iwl4965_send_card_state(priv,
1297                                                         CARD_STATE_CMD_DISABLE,
1298                                                         0);
1299                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1300
1301                         /* make sure mac80211 stop sending Tx frame */
1302                         if (priv->mac80211_registered)
1303                                 ieee80211_stop_queues(priv->hw);
1304                 }
1305                 return;
1306         }
1307
1308         spin_lock_irqsave(&priv->lock, flags);
1309         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1310
1311         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1312         spin_unlock_irqrestore(&priv->lock, flags);
1313
1314         /* wake up ucode */
1315         msleep(10);
1316
1317         spin_lock_irqsave(&priv->lock, flags);
1318         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1319         if (!iwl_grab_nic_access(priv))
1320                 iwl_release_nic_access(priv);
1321         spin_unlock_irqrestore(&priv->lock, flags);
1322
1323         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1324                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1325                                   "disabled by HW switch\n");
1326                 return;
1327         }
1328
1329         queue_work(priv->workqueue, &priv->restart);
1330         return;
1331 }
1332
1333 #define IWL_PACKET_RETRY_TIME HZ
1334
1335 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1336 {
1337         u16 sc = le16_to_cpu(header->seq_ctrl);
1338         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1339         u16 frag = sc & IEEE80211_SCTL_FRAG;
1340         u16 *last_seq, *last_frag;
1341         unsigned long *last_time;
1342
1343         switch (priv->iw_mode) {
1344         case IEEE80211_IF_TYPE_IBSS:{
1345                 struct list_head *p;
1346                 struct iwl4965_ibss_seq *entry = NULL;
1347                 u8 *mac = header->addr2;
1348                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1349
1350                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1351                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
1352                         if (!compare_ether_addr(entry->mac, mac))
1353                                 break;
1354                 }
1355                 if (p == &priv->ibss_mac_hash[index]) {
1356                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1357                         if (!entry) {
1358                                 IWL_ERROR("Cannot malloc new mac entry\n");
1359                                 return 0;
1360                         }
1361                         memcpy(entry->mac, mac, ETH_ALEN);
1362                         entry->seq_num = seq;
1363                         entry->frag_num = frag;
1364                         entry->packet_time = jiffies;
1365                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1366                         return 0;
1367                 }
1368                 last_seq = &entry->seq_num;
1369                 last_frag = &entry->frag_num;
1370                 last_time = &entry->packet_time;
1371                 break;
1372         }
1373         case IEEE80211_IF_TYPE_STA:
1374                 last_seq = &priv->last_seq_num;
1375                 last_frag = &priv->last_frag_num;
1376                 last_time = &priv->last_packet_time;
1377                 break;
1378         default:
1379                 return 0;
1380         }
1381         if ((*last_seq == seq) &&
1382             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1383                 if (*last_frag == frag)
1384                         goto drop;
1385                 if (*last_frag + 1 != frag)
1386                         /* out-of-order fragment */
1387                         goto drop;
1388         } else
1389                 *last_seq = seq;
1390
1391         *last_frag = frag;
1392         *last_time = jiffies;
1393         return 0;
1394
1395  drop:
1396         return 1;
1397 }
1398
1399 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1400
1401 #include "iwl-spectrum.h"
1402
1403 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1404 #define BEACON_TIME_MASK_HIGH   0xFF000000
1405 #define TIME_UNIT               1024
1406
1407 /*
1408  * extended beacon time format
1409  * time in usec will be changed into a 32-bit value in 8:24 format
1410  * the high 1 byte is the beacon counts
1411  * the lower 3 bytes is the time in usec within one beacon interval
1412  */
1413
1414 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1415 {
1416         u32 quot;
1417         u32 rem;
1418         u32 interval = beacon_interval * 1024;
1419
1420         if (!interval || !usec)
1421                 return 0;
1422
1423         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1424         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1425
1426         return (quot << 24) + rem;
1427 }
1428
1429 /* base is usually what we get from ucode with each received frame,
1430  * the same as HW timer counter counting down
1431  */
1432
1433 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1434 {
1435         u32 base_low = base & BEACON_TIME_MASK_LOW;
1436         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1437         u32 interval = beacon_interval * TIME_UNIT;
1438         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1439             (addon & BEACON_TIME_MASK_HIGH);
1440
1441         if (base_low > addon_low)
1442                 res += base_low - addon_low;
1443         else if (base_low < addon_low) {
1444                 res += interval + base_low - addon_low;
1445                 res += (1 << 24);
1446         } else
1447                 res += (1 << 24);
1448
1449         return cpu_to_le32(res);
1450 }
1451
1452 static int iwl4965_get_measurement(struct iwl_priv *priv,
1453                                struct ieee80211_measurement_params *params,
1454                                u8 type)
1455 {
1456         struct iwl4965_spectrum_cmd spectrum;
1457         struct iwl_rx_packet *res;
1458         struct iwl_host_cmd cmd = {
1459                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1460                 .data = (void *)&spectrum,
1461                 .meta.flags = CMD_WANT_SKB,
1462         };
1463         u32 add_time = le64_to_cpu(params->start_time);
1464         int rc;
1465         int spectrum_resp_status;
1466         int duration = le16_to_cpu(params->duration);
1467
1468         if (iwl_is_associated(priv))
1469                 add_time =
1470                     iwl4965_usecs_to_beacons(
1471                         le64_to_cpu(params->start_time) - priv->last_tsf,
1472                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1473
1474         memset(&spectrum, 0, sizeof(spectrum));
1475
1476         spectrum.channel_count = cpu_to_le16(1);
1477         spectrum.flags =
1478             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1479         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1480         cmd.len = sizeof(spectrum);
1481         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1482
1483         if (iwl_is_associated(priv))
1484                 spectrum.start_time =
1485                     iwl4965_add_beacon_time(priv->last_beacon_time,
1486                                 add_time,
1487                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1488         else
1489                 spectrum.start_time = 0;
1490
1491         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1492         spectrum.channels[0].channel = params->channel;
1493         spectrum.channels[0].type = type;
1494         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1495                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1496                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1497
1498         rc = iwl_send_cmd_sync(priv, &cmd);
1499         if (rc)
1500                 return rc;
1501
1502         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1503         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1504                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1505                 rc = -EIO;
1506         }
1507
1508         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1509         switch (spectrum_resp_status) {
1510         case 0:         /* Command will be handled */
1511                 if (res->u.spectrum.id != 0xff) {
1512                         IWL_DEBUG_INFO
1513                             ("Replaced existing measurement: %d\n",
1514                              res->u.spectrum.id);
1515                         priv->measurement_status &= ~MEASUREMENT_READY;
1516                 }
1517                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1518                 rc = 0;
1519                 break;
1520
1521         case 1:         /* Command will not be handled */
1522                 rc = -EAGAIN;
1523                 break;
1524         }
1525
1526         dev_kfree_skb_any(cmd.meta.u.skb);
1527
1528         return rc;
1529 }
1530 #endif
1531
1532 /******************************************************************************
1533  *
1534  * Generic RX handler implementations
1535  *
1536  ******************************************************************************/
1537 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1538                                 struct iwl_rx_mem_buffer *rxb)
1539 {
1540         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1541         struct iwl_alive_resp *palive;
1542         struct delayed_work *pwork;
1543
1544         palive = &pkt->u.alive_frame;
1545
1546         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1547                        "0x%01X 0x%01X\n",
1548                        palive->is_valid, palive->ver_type,
1549                        palive->ver_subtype);
1550
1551         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1552                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1553                 memcpy(&priv->card_alive_init,
1554                        &pkt->u.alive_frame,
1555                        sizeof(struct iwl_init_alive_resp));
1556                 pwork = &priv->init_alive_start;
1557         } else {
1558                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1559                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1560                        sizeof(struct iwl_alive_resp));
1561                 pwork = &priv->alive_start;
1562         }
1563
1564         /* We delay the ALIVE response by 5ms to
1565          * give the HW RF Kill time to activate... */
1566         if (palive->is_valid == UCODE_VALID_OK)
1567                 queue_delayed_work(priv->workqueue, pwork,
1568                                    msecs_to_jiffies(5));
1569         else
1570                 IWL_WARNING("uCode did not respond OK.\n");
1571 }
1572
1573 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1574                                    struct iwl_rx_mem_buffer *rxb)
1575 {
1576         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1577
1578         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1579                 "seq 0x%04X ser 0x%08X\n",
1580                 le32_to_cpu(pkt->u.err_resp.error_type),
1581                 get_cmd_string(pkt->u.err_resp.cmd_id),
1582                 pkt->u.err_resp.cmd_id,
1583                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1584                 le32_to_cpu(pkt->u.err_resp.error_info));
1585 }
1586
1587 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1588
1589 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1590 {
1591         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1592         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1593         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1594         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1595                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1596         rxon->channel = csa->channel;
1597         priv->staging_rxon.channel = csa->channel;
1598 }
1599
1600 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1601                                           struct iwl_rx_mem_buffer *rxb)
1602 {
1603 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1604         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1605         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1606
1607         if (!report->state) {
1608                 IWL_DEBUG(IWL_DL_11H,
1609                         "Spectrum Measure Notification: Start\n");
1610                 return;
1611         }
1612
1613         memcpy(&priv->measure_report, report, sizeof(*report));
1614         priv->measurement_status |= MEASUREMENT_READY;
1615 #endif
1616 }
1617
1618 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1619                                       struct iwl_rx_mem_buffer *rxb)
1620 {
1621 #ifdef CONFIG_IWLWIFI_DEBUG
1622         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1623         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1624         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1625                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1626 #endif
1627 }
1628
1629 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1630                                              struct iwl_rx_mem_buffer *rxb)
1631 {
1632         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1633         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1634                         "notification for %s:\n",
1635                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1636         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1637 }
1638
1639 static void iwl4965_bg_beacon_update(struct work_struct *work)
1640 {
1641         struct iwl_priv *priv =
1642                 container_of(work, struct iwl_priv, beacon_update);
1643         struct sk_buff *beacon;
1644
1645         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1646         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1647
1648         if (!beacon) {
1649                 IWL_ERROR("update beacon failed\n");
1650                 return;
1651         }
1652
1653         mutex_lock(&priv->mutex);
1654         /* new beacon skb is allocated every time; dispose previous.*/
1655         if (priv->ibss_beacon)
1656                 dev_kfree_skb(priv->ibss_beacon);
1657
1658         priv->ibss_beacon = beacon;
1659         mutex_unlock(&priv->mutex);
1660
1661         iwl4965_send_beacon_cmd(priv);
1662 }
1663
1664 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1665                                 struct iwl_rx_mem_buffer *rxb)
1666 {
1667 #ifdef CONFIG_IWLWIFI_DEBUG
1668         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1669         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1670         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1671
1672         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1673                 "tsf %d %d rate %d\n",
1674                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1675                 beacon->beacon_notify_hdr.failure_frame,
1676                 le32_to_cpu(beacon->ibss_mgr_status),
1677                 le32_to_cpu(beacon->high_tsf),
1678                 le32_to_cpu(beacon->low_tsf), rate);
1679 #endif
1680
1681         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1682             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1683                 queue_work(priv->workqueue, &priv->beacon_update);
1684 }
1685
1686 /* Service response to REPLY_SCAN_CMD (0x80) */
1687 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
1688                               struct iwl_rx_mem_buffer *rxb)
1689 {
1690 #ifdef CONFIG_IWLWIFI_DEBUG
1691         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1692         struct iwl4965_scanreq_notification *notif =
1693             (struct iwl4965_scanreq_notification *)pkt->u.raw;
1694
1695         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1696 #endif
1697 }
1698
1699 /* Service SCAN_START_NOTIFICATION (0x82) */
1700 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
1701                                     struct iwl_rx_mem_buffer *rxb)
1702 {
1703         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1704         struct iwl4965_scanstart_notification *notif =
1705             (struct iwl4965_scanstart_notification *)pkt->u.raw;
1706         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1707         IWL_DEBUG_SCAN("Scan start: "
1708                        "%d [802.11%s] "
1709                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1710                        notif->channel,
1711                        notif->band ? "bg" : "a",
1712                        notif->tsf_high,
1713                        notif->tsf_low, notif->status, notif->beacon_timer);
1714 }
1715
1716 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1717 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
1718                                       struct iwl_rx_mem_buffer *rxb)
1719 {
1720         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1721         struct iwl4965_scanresults_notification *notif =
1722             (struct iwl4965_scanresults_notification *)pkt->u.raw;
1723
1724         IWL_DEBUG_SCAN("Scan ch.res: "
1725                        "%d [802.11%s] "
1726                        "(TSF: 0x%08X:%08X) - %d "
1727                        "elapsed=%lu usec (%dms since last)\n",
1728                        notif->channel,
1729                        notif->band ? "bg" : "a",
1730                        le32_to_cpu(notif->tsf_high),
1731                        le32_to_cpu(notif->tsf_low),
1732                        le32_to_cpu(notif->statistics[0]),
1733                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1734                        jiffies_to_msecs(elapsed_jiffies
1735                                         (priv->last_scan_jiffies, jiffies)));
1736
1737         priv->last_scan_jiffies = jiffies;
1738         priv->next_scan_jiffies = 0;
1739 }
1740
1741 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1742 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
1743                                        struct iwl_rx_mem_buffer *rxb)
1744 {
1745         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1746         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1747
1748         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1749                        scan_notif->scanned_channels,
1750                        scan_notif->tsf_low,
1751                        scan_notif->tsf_high, scan_notif->status);
1752
1753         /* The HW is no longer scanning */
1754         clear_bit(STATUS_SCAN_HW, &priv->status);
1755
1756         /* The scan completion notification came in, so kill that timer... */
1757         cancel_delayed_work(&priv->scan_check);
1758
1759         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1760                        (priv->scan_bands == 2) ? "2.4" : "5.2",
1761                        jiffies_to_msecs(elapsed_jiffies
1762                                         (priv->scan_pass_start, jiffies)));
1763
1764         /* Remove this scanned band from the list
1765          * of pending bands to scan */
1766         priv->scan_bands--;
1767
1768         /* If a request to abort was given, or the scan did not succeed
1769          * then we reset the scan state machine and terminate,
1770          * re-queuing another scan if one has been requested */
1771         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1772                 IWL_DEBUG_INFO("Aborted scan completed.\n");
1773                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1774         } else {
1775                 /* If there are more bands on this scan pass reschedule */
1776                 if (priv->scan_bands > 0)
1777                         goto reschedule;
1778         }
1779
1780         priv->last_scan_jiffies = jiffies;
1781         priv->next_scan_jiffies = 0;
1782         IWL_DEBUG_INFO("Setting scan to off\n");
1783
1784         clear_bit(STATUS_SCANNING, &priv->status);
1785
1786         IWL_DEBUG_INFO("Scan took %dms\n",
1787                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1788
1789         queue_work(priv->workqueue, &priv->scan_completed);
1790
1791         return;
1792
1793 reschedule:
1794         priv->scan_pass_start = jiffies;
1795         queue_work(priv->workqueue, &priv->request_scan);
1796 }
1797
1798 /* Handle notification from uCode that card's power state is changing
1799  * due to software, hardware, or critical temperature RFKILL */
1800 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1801                                     struct iwl_rx_mem_buffer *rxb)
1802 {
1803         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1804         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1805         unsigned long status = priv->status;
1806
1807         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1808                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1809                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1810
1811         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1812                      RF_CARD_DISABLED)) {
1813
1814                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1815                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1816
1817                 if (!iwl_grab_nic_access(priv)) {
1818                         iwl_write_direct32(
1819                                 priv, HBUS_TARG_MBX_C,
1820                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1821
1822                         iwl_release_nic_access(priv);
1823                 }
1824
1825                 if (!(flags & RXON_CARD_DISABLED)) {
1826                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1827                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1828                         if (!iwl_grab_nic_access(priv)) {
1829                                 iwl_write_direct32(
1830                                         priv, HBUS_TARG_MBX_C,
1831                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1832
1833                                 iwl_release_nic_access(priv);
1834                         }
1835                 }
1836
1837                 if (flags & RF_CARD_DISABLED) {
1838                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1839                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1840                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1841                         if (!iwl_grab_nic_access(priv))
1842                                 iwl_release_nic_access(priv);
1843                 }
1844         }
1845
1846         if (flags & HW_CARD_DISABLED)
1847                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1848         else
1849                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1850
1851
1852         if (flags & SW_CARD_DISABLED)
1853                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1854         else
1855                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1856
1857         if (!(flags & RXON_CARD_DISABLED))
1858                 iwl4965_scan_cancel(priv);
1859
1860         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1861              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1862             (test_bit(STATUS_RF_KILL_SW, &status) !=
1863              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1864                 queue_work(priv->workqueue, &priv->rf_kill);
1865         else
1866                 wake_up_interruptible(&priv->wait_command_queue);
1867 }
1868
1869 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1870  * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1871 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1872                                     struct iwl_rx_mem_buffer *rxb)
1873 {
1874         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1875         priv->last_phy_res[0] = 1;
1876         memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1877                sizeof(struct iwl4965_rx_phy_res));
1878 }
1879
1880 /**
1881  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1882  *
1883  * Setup the RX handlers for each of the reply types sent from the uCode
1884  * to the host.
1885  *
1886  * This function chains into the hardware specific files for them to setup
1887  * any hardware specific handlers as well.
1888  */
1889 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1890 {
1891         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1892         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1893         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1894         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1895             iwl4965_rx_spectrum_measure_notif;
1896         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1897         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1898             iwl4965_rx_pm_debug_statistics_notif;
1899         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1900
1901         /*
1902          * The same handler is used for both the REPLY to a discrete
1903          * statistics request from the host as well as for the periodic
1904          * statistics notifications (after received beacons) from the uCode.
1905          */
1906         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1907         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1908         /* scan handlers */
1909         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
1910         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
1911         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1912             iwl4965_rx_scan_results_notif;
1913         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1914             iwl4965_rx_scan_complete_notif;
1915         /* status change handler */
1916         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1917
1918         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1919             iwl_rx_missed_beacon_notif;
1920         /* Rx handlers */
1921         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1922         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
1923         /* Set up hardware specific Rx handlers */
1924         priv->cfg->ops->lib->rx_handler_setup(priv);
1925 }
1926
1927 /*
1928  * this should be called while priv->lock is locked
1929 */
1930 static void __iwl_rx_replenish(struct iwl_priv *priv)
1931 {
1932         iwl_rx_allocate(priv);
1933         iwl_rx_queue_restock(priv);
1934 }
1935
1936
1937 /**
1938  * iwl_rx_handle - Main entry function for receiving responses from uCode
1939  *
1940  * Uses the priv->rx_handlers callback function array to invoke
1941  * the appropriate handlers, including command responses,
1942  * frame-received notifications, and other notifications.
1943  */
1944 void iwl_rx_handle(struct iwl_priv *priv)
1945 {
1946         struct iwl_rx_mem_buffer *rxb;
1947         struct iwl_rx_packet *pkt;
1948         struct iwl_rx_queue *rxq = &priv->rxq;
1949         u32 r, i;
1950         int reclaim;
1951         unsigned long flags;
1952         u8 fill_rx = 0;
1953         u32 count = 8;
1954
1955         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1956          * buffer that the driver may process (last buffer filled by ucode). */
1957         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1958         i = rxq->read;
1959
1960         /* Rx interrupt, but nothing sent from uCode */
1961         if (i == r)
1962                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1963
1964         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1965                 fill_rx = 1;
1966
1967         while (i != r) {
1968                 rxb = rxq->queue[i];
1969
1970                 /* If an RXB doesn't have a Rx queue slot associated with it,
1971                  * then a bug has been introduced in the queue refilling
1972                  * routines -- catch it here */
1973                 BUG_ON(rxb == NULL);
1974
1975                 rxq->queue[i] = NULL;
1976
1977                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1978                                             priv->hw_params.rx_buf_size,
1979                                             PCI_DMA_FROMDEVICE);
1980                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1981
1982                 /* Reclaim a command buffer only if this packet is a response
1983                  *   to a (driver-originated) command.
1984                  * If the packet (e.g. Rx frame) originated from uCode,
1985                  *   there is no command buffer to reclaim.
1986                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1987                  *   but apparently a few don't get set; catch them here. */
1988                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1989                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1990                         (pkt->hdr.cmd != REPLY_RX) &&
1991                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1992                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1993                         (pkt->hdr.cmd != REPLY_TX);
1994
1995                 /* Based on type of command response or notification,
1996                  *   handle those that need handling via function in
1997                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1998                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1999                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2000                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2001                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2002                 } else {
2003                         /* No handling needed */
2004                         IWL_DEBUG(IWL_DL_RX,
2005                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2006                                 r, i, get_cmd_string(pkt->hdr.cmd),
2007                                 pkt->hdr.cmd);
2008                 }
2009
2010                 if (reclaim) {
2011                         /* Invoke any callbacks, transfer the skb to caller, and
2012                          * fire off the (possibly) blocking iwl_send_cmd()
2013                          * as we reclaim the driver command queue */
2014                         if (rxb && rxb->skb)
2015                                 iwl_tx_cmd_complete(priv, rxb);
2016                         else
2017                                 IWL_WARNING("Claim null rxb?\n");
2018                 }
2019
2020                 /* For now we just don't re-use anything.  We can tweak this
2021                  * later to try and re-use notification packets and SKBs that
2022                  * fail to Rx correctly */
2023                 if (rxb->skb != NULL) {
2024                         priv->alloc_rxb_skb--;
2025                         dev_kfree_skb_any(rxb->skb);
2026                         rxb->skb = NULL;
2027                 }
2028
2029                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2030                                  priv->hw_params.rx_buf_size,
2031                                  PCI_DMA_FROMDEVICE);
2032                 spin_lock_irqsave(&rxq->lock, flags);
2033                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2034                 spin_unlock_irqrestore(&rxq->lock, flags);
2035                 i = (i + 1) & RX_QUEUE_MASK;
2036                 /* If there are a lot of unused frames,
2037                  * restock the Rx queue so ucode wont assert. */
2038                 if (fill_rx) {
2039                         count++;
2040                         if (count >= 8) {
2041                                 priv->rxq.read = i;
2042                                 __iwl_rx_replenish(priv);
2043                                 count = 0;
2044                         }
2045                 }
2046         }
2047
2048         /* Backtrack one entry */
2049         priv->rxq.read = i;
2050         iwl_rx_queue_restock(priv);
2051 }
2052 /* Convert linear signal-to-noise ratio into dB */
2053 static u8 ratio2dB[100] = {
2054 /*       0   1   2   3   4   5   6   7   8   9 */
2055          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2056         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2057         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2058         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2059         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2060         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2061         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2062         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2063         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2064         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2065 };
2066
2067 /* Calculates a relative dB value from a ratio of linear
2068  *   (i.e. not dB) signal levels.
2069  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2070 int iwl4965_calc_db_from_ratio(int sig_ratio)
2071 {
2072         /* 1000:1 or higher just report as 60 dB */
2073         if (sig_ratio >= 1000)
2074                 return 60;
2075
2076         /* 100:1 or higher, divide by 10 and use table,
2077          *   add 20 dB to make up for divide by 10 */
2078         if (sig_ratio >= 100)
2079                 return (20 + (int)ratio2dB[sig_ratio/10]);
2080
2081         /* We shouldn't see this */
2082         if (sig_ratio < 1)
2083                 return 0;
2084
2085         /* Use table for ratios 1:1 - 99:1 */
2086         return (int)ratio2dB[sig_ratio];
2087 }
2088
2089 #define PERFECT_RSSI (-20) /* dBm */
2090 #define WORST_RSSI (-95)   /* dBm */
2091 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2092
2093 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2094  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2095  *   about formulas used below. */
2096 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2097 {
2098         int sig_qual;
2099         int degradation = PERFECT_RSSI - rssi_dbm;
2100
2101         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2102          * as indicator; formula is (signal dbm - noise dbm).
2103          * SNR at or above 40 is a great signal (100%).
2104          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2105          * Weakest usable signal is usually 10 - 15 dB SNR. */
2106         if (noise_dbm) {
2107                 if (rssi_dbm - noise_dbm >= 40)
2108                         return 100;
2109                 else if (rssi_dbm < noise_dbm)
2110                         return 0;
2111                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2112
2113         /* Else use just the signal level.
2114          * This formula is a least squares fit of data points collected and
2115          *   compared with a reference system that had a percentage (%) display
2116          *   for signal quality. */
2117         } else
2118                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2119                             (15 * RSSI_RANGE + 62 * degradation)) /
2120                            (RSSI_RANGE * RSSI_RANGE);
2121
2122         if (sig_qual > 100)
2123                 sig_qual = 100;
2124         else if (sig_qual < 1)
2125                 sig_qual = 0;
2126
2127         return sig_qual;
2128 }
2129
2130 #ifdef CONFIG_IWLWIFI_DEBUG
2131 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2132 {
2133         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2134         DECLARE_MAC_BUF(mac);
2135
2136         IWL_DEBUG_RADIO("RX CONFIG:\n");
2137         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2138         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2139         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2140         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2141                         le32_to_cpu(rxon->filter_flags));
2142         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2143         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2144                         rxon->ofdm_basic_rates);
2145         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2146         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2147                         print_mac(mac, rxon->node_addr));
2148         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2149                         print_mac(mac, rxon->bssid_addr));
2150         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2151 }
2152 #endif
2153
2154 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2155 {
2156         IWL_DEBUG_ISR("Enabling interrupts\n");
2157         set_bit(STATUS_INT_ENABLED, &priv->status);
2158         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2159 }
2160
2161 /* call this function to flush any scheduled tasklet */
2162 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2163 {
2164         /* wait to make sure we flush pedding tasklet*/
2165         synchronize_irq(priv->pci_dev->irq);
2166         tasklet_kill(&priv->irq_tasklet);
2167 }
2168
2169 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2170 {
2171         clear_bit(STATUS_INT_ENABLED, &priv->status);
2172
2173         /* disable interrupts from uCode/NIC to host */
2174         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2175
2176         /* acknowledge/clear/reset any interrupts still pending
2177          * from uCode or flow handler (Rx/Tx DMA) */
2178         iwl_write32(priv, CSR_INT, 0xffffffff);
2179         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2180         IWL_DEBUG_ISR("Disabled interrupts\n");
2181 }
2182
2183
2184 /**
2185  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2186  */
2187 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2188 {
2189         /* Set the FW error flag -- cleared on iwl4965_down */
2190         set_bit(STATUS_FW_ERROR, &priv->status);
2191
2192         /* Cancel currently queued command. */
2193         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2194
2195 #ifdef CONFIG_IWLWIFI_DEBUG
2196         if (priv->debug_level & IWL_DL_FW_ERRORS) {
2197                 iwl_dump_nic_error_log(priv);
2198                 iwl_dump_nic_event_log(priv);
2199                 iwl4965_print_rx_config_cmd(priv);
2200         }
2201 #endif
2202
2203         wake_up_interruptible(&priv->wait_command_queue);
2204
2205         /* Keep the restart process from trying to send host
2206          * commands by clearing the INIT status bit */
2207         clear_bit(STATUS_READY, &priv->status);
2208
2209         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2210                 IWL_DEBUG(IWL_DL_FW_ERRORS,
2211                           "Restarting adapter due to uCode error.\n");
2212
2213                 if (iwl_is_associated(priv)) {
2214                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
2215                                sizeof(priv->recovery_rxon));
2216                         priv->error_recovering = 1;
2217                 }
2218                 if (priv->cfg->mod_params->restart_fw)
2219                         queue_work(priv->workqueue, &priv->restart);
2220         }
2221 }
2222
2223 static void iwl4965_error_recovery(struct iwl_priv *priv)
2224 {
2225         unsigned long flags;
2226
2227         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2228                sizeof(priv->staging_rxon));
2229         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2230         iwl4965_commit_rxon(priv);
2231
2232         iwl_rxon_add_station(priv, priv->bssid, 1);
2233
2234         spin_lock_irqsave(&priv->lock, flags);
2235         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2236         priv->error_recovering = 0;
2237         spin_unlock_irqrestore(&priv->lock, flags);
2238 }
2239
2240 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2241 {
2242         u32 inta, handled = 0;
2243         u32 inta_fh;
2244         unsigned long flags;
2245 #ifdef CONFIG_IWLWIFI_DEBUG
2246         u32 inta_mask;
2247 #endif
2248
2249         spin_lock_irqsave(&priv->lock, flags);
2250
2251         /* Ack/clear/reset pending uCode interrupts.
2252          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2253          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2254         inta = iwl_read32(priv, CSR_INT);
2255         iwl_write32(priv, CSR_INT, inta);
2256
2257         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2258          * Any new interrupts that happen after this, either while we're
2259          * in this tasklet, or later, will show up in next ISR/tasklet. */
2260         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2261         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2262
2263 #ifdef CONFIG_IWLWIFI_DEBUG
2264         if (priv->debug_level & IWL_DL_ISR) {
2265                 /* just for debug */
2266                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2267                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2268                               inta, inta_mask, inta_fh);
2269         }
2270 #endif
2271
2272         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2273          * atomic, make sure that inta covers all the interrupts that
2274          * we've discovered, even if FH interrupt came in just after
2275          * reading CSR_INT. */
2276         if (inta_fh & CSR49_FH_INT_RX_MASK)
2277                 inta |= CSR_INT_BIT_FH_RX;
2278         if (inta_fh & CSR49_FH_INT_TX_MASK)
2279                 inta |= CSR_INT_BIT_FH_TX;
2280
2281         /* Now service all interrupt bits discovered above. */
2282         if (inta & CSR_INT_BIT_HW_ERR) {
2283                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
2284
2285                 /* Tell the device to stop sending interrupts */
2286                 iwl4965_disable_interrupts(priv);
2287
2288                 iwl4965_irq_handle_error(priv);
2289
2290                 handled |= CSR_INT_BIT_HW_ERR;
2291
2292                 spin_unlock_irqrestore(&priv->lock, flags);
2293
2294                 return;
2295         }
2296
2297 #ifdef CONFIG_IWLWIFI_DEBUG
2298         if (priv->debug_level & (IWL_DL_ISR)) {
2299                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2300                 if (inta & CSR_INT_BIT_SCD)
2301                         IWL_DEBUG_ISR("Scheduler finished to transmit "
2302                                       "the frame/frames.\n");
2303
2304                 /* Alive notification via Rx interrupt will do the real work */
2305                 if (inta & CSR_INT_BIT_ALIVE)
2306                         IWL_DEBUG_ISR("Alive interrupt\n");
2307         }
2308 #endif
2309         /* Safely ignore these bits for debug checks below */
2310         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2311
2312         /* HW RF KILL switch toggled */
2313         if (inta & CSR_INT_BIT_RF_KILL) {
2314                 int hw_rf_kill = 0;
2315                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2316                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2317                         hw_rf_kill = 1;
2318
2319                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2320                                 hw_rf_kill ? "disable radio":"enable radio");
2321
2322                 /* Queue restart only if RF_KILL switch was set to "kill"
2323                  *   when we loaded driver, and is now set to "enable".
2324                  * After we're Alive, RF_KILL gets handled by
2325                  *   iwl4965_rx_card_state_notif() */
2326                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2327                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2328                         queue_work(priv->workqueue, &priv->restart);
2329                 }
2330
2331                 handled |= CSR_INT_BIT_RF_KILL;
2332         }
2333
2334         /* Chip got too hot and stopped itself */
2335         if (inta & CSR_INT_BIT_CT_KILL) {
2336                 IWL_ERROR("Microcode CT kill error detected.\n");
2337                 handled |= CSR_INT_BIT_CT_KILL;
2338         }
2339
2340         /* Error detected by uCode */
2341         if (inta & CSR_INT_BIT_SW_ERR) {
2342                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
2343                           inta);
2344                 iwl4965_irq_handle_error(priv);
2345                 handled |= CSR_INT_BIT_SW_ERR;
2346         }
2347
2348         /* uCode wakes up after power-down sleep */
2349         if (inta & CSR_INT_BIT_WAKEUP) {
2350                 IWL_DEBUG_ISR("Wakeup interrupt\n");
2351                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2352                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2353                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2354                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2355                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2356                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2357                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2358
2359                 handled |= CSR_INT_BIT_WAKEUP;
2360         }
2361
2362         /* All uCode command responses, including Tx command responses,
2363          * Rx "responses" (frame-received notification), and other
2364          * notifications from uCode come through here*/
2365         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2366                 iwl_rx_handle(priv);
2367                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2368         }
2369
2370         if (inta & CSR_INT_BIT_FH_TX) {
2371                 IWL_DEBUG_ISR("Tx interrupt\n");
2372                 handled |= CSR_INT_BIT_FH_TX;
2373                 /* FH finished to write, send event */
2374                 priv->ucode_write_complete = 1;
2375                 wake_up_interruptible(&priv->wait_command_queue);
2376         }
2377
2378         if (inta & ~handled)
2379                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2380
2381         if (inta & ~CSR_INI_SET_MASK) {
2382                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2383                          inta & ~CSR_INI_SET_MASK);
2384                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
2385         }
2386
2387         /* Re-enable all interrupts */
2388         /* only Re-enable if diabled by irq */
2389         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2390                 iwl4965_enable_interrupts(priv);
2391
2392 #ifdef CONFIG_IWLWIFI_DEBUG
2393         if (priv->debug_level & (IWL_DL_ISR)) {
2394                 inta = iwl_read32(priv, CSR_INT);
2395                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2396                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2397                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2398                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2399         }
2400 #endif
2401         spin_unlock_irqrestore(&priv->lock, flags);
2402 }
2403
2404 static irqreturn_t iwl4965_isr(int irq, void *data)
2405 {
2406         struct iwl_priv *priv = data;
2407         u32 inta, inta_mask;
2408         u32 inta_fh;
2409         if (!priv)
2410                 return IRQ_NONE;
2411
2412         spin_lock(&priv->lock);
2413
2414         /* Disable (but don't clear!) interrupts here to avoid
2415          *    back-to-back ISRs and sporadic interrupts from our NIC.
2416          * If we have something to service, the tasklet will re-enable ints.
2417          * If we *don't* have something, we'll re-enable before leaving here. */
2418         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2419         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2420
2421         /* Discover which interrupts are active/pending */
2422         inta = iwl_read32(priv, CSR_INT);
2423         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2424
2425         /* Ignore interrupt if there's nothing in NIC to service.
2426          * This may be due to IRQ shared with another device,
2427          * or due to sporadic interrupts thrown from our NIC. */
2428         if (!inta && !inta_fh) {
2429                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2430                 goto none;
2431         }
2432
2433         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2434                 /* Hardware disappeared. It might have already raised
2435                  * an interrupt */
2436                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2437                 goto unplugged;
2438         }
2439
2440         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2441                       inta, inta_mask, inta_fh);
2442
2443         inta &= ~CSR_INT_BIT_SCD;
2444
2445         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2446         if (likely(inta || inta_fh))
2447                 tasklet_schedule(&priv->irq_tasklet);
2448
2449  unplugged:
2450         spin_unlock(&priv->lock);
2451         return IRQ_HANDLED;
2452
2453  none:
2454         /* re-enable interrupts here since we don't have anything to service. */
2455         /* only Re-enable if diabled by irq */
2456         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2457                 iwl4965_enable_interrupts(priv);
2458         spin_unlock(&priv->lock);
2459         return IRQ_NONE;
2460 }
2461
2462 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2463  * sending probe req.  This should be set long enough to hear probe responses
2464  * from more than one AP.  */
2465 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
2466 #define IWL_ACTIVE_DWELL_TIME_52    (10)
2467
2468 /* For faster active scanning, scan will move to the next channel if fewer than
2469  * PLCP_QUIET_THRESH packets are heard on this channel within
2470  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
2471  * time if it's a quiet channel (nothing responded to our probe, and there's
2472  * no other traffic).
2473  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2474 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
2475 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
2476
2477 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2478  * Must be set longer than active dwell time.
2479  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2480 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
2481 #define IWL_PASSIVE_DWELL_TIME_52   (10)
2482 #define IWL_PASSIVE_DWELL_BASE      (100)
2483 #define IWL_CHANNEL_TUNE_TIME       5
2484
2485 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2486                                                 enum ieee80211_band band)
2487 {
2488         if (band == IEEE80211_BAND_5GHZ)
2489                 return IWL_ACTIVE_DWELL_TIME_52;
2490         else
2491                 return IWL_ACTIVE_DWELL_TIME_24;
2492 }
2493
2494 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2495                                           enum ieee80211_band band)
2496 {
2497         u16 active = iwl4965_get_active_dwell_time(priv, band);
2498         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2499             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2500             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2501
2502         if (iwl_is_associated(priv)) {
2503                 /* If we're associated, we clamp the maximum passive
2504                  * dwell time to be 98% of the beacon interval (minus
2505                  * 2 * channel tune time) */
2506                 passive = priv->beacon_int;
2507                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2508                         passive = IWL_PASSIVE_DWELL_BASE;
2509                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2510         }
2511
2512         if (passive <= active)
2513                 passive = active + 1;
2514
2515         return passive;
2516 }
2517
2518 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2519                                          enum ieee80211_band band,
2520                                      u8 is_active, u8 direct_mask,
2521                                      struct iwl4965_scan_channel *scan_ch)
2522 {
2523         const struct ieee80211_channel *channels = NULL;
2524         const struct ieee80211_supported_band *sband;
2525         const struct iwl_channel_info *ch_info;
2526         u16 passive_dwell = 0;
2527         u16 active_dwell = 0;
2528         int added, i;
2529
2530         sband = iwl_get_hw_mode(priv, band);
2531         if (!sband)
2532                 return 0;
2533
2534         channels = sband->channels;
2535
2536         active_dwell = iwl4965_get_active_dwell_time(priv, band);
2537         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2538
2539         for (i = 0, added = 0; i < sband->n_channels; i++) {
2540                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2541                         continue;
2542
2543                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2544
2545                 ch_info = iwl_get_channel_info(priv, band,
2546                                          scan_ch->channel);
2547                 if (!is_channel_valid(ch_info)) {
2548                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2549                                        scan_ch->channel);
2550                         continue;
2551                 }
2552
2553                 if (!is_active || is_channel_passive(ch_info) ||
2554                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2555                         scan_ch->type = 0;      /* passive */
2556                 else
2557                         scan_ch->type = 1;      /* active */
2558
2559                 if (scan_ch->type & 1)
2560                         scan_ch->type |= (direct_mask << 1);
2561
2562                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2563                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2564
2565                 /* Set txpower levels to defaults */
2566                 scan_ch->tpc.dsp_atten = 110;
2567                 /* scan_pwr_info->tpc.dsp_atten; */
2568
2569                 /*scan_pwr_info->tpc.tx_gain; */
2570                 if (band == IEEE80211_BAND_5GHZ)
2571                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2572                 else {
2573                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2574                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2575                          * power level:
2576                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2577                          */
2578                 }
2579
2580                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2581                                scan_ch->channel,
2582                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2583                                (scan_ch->type & 1) ?
2584                                active_dwell : passive_dwell);
2585
2586                 scan_ch++;
2587                 added++;
2588         }
2589
2590         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2591         return added;
2592 }
2593
2594 /******************************************************************************
2595  *
2596  * uCode download functions
2597  *
2598  ******************************************************************************/
2599
2600 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2601 {
2602         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2603         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2604         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2605         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2606         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2607         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2608 }
2609
2610 static void iwl4965_nic_start(struct iwl_priv *priv)
2611 {
2612         /* Remove all resets to allow NIC to operate */
2613         iwl_write32(priv, CSR_RESET, 0);
2614 }
2615
2616
2617 /**
2618  * iwl4965_read_ucode - Read uCode images from disk file.
2619  *
2620  * Copy into buffers for card to fetch via bus-mastering
2621  */
2622 static int iwl4965_read_ucode(struct iwl_priv *priv)
2623 {
2624         struct iwl4965_ucode *ucode;
2625         int ret;
2626         const struct firmware *ucode_raw;
2627         const char *name = priv->cfg->fw_name;
2628         u8 *src;
2629         size_t len;
2630         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2631
2632         /* Ask kernel firmware_class module to get the boot firmware off disk.
2633          * request_firmware() is synchronous, file is in memory on return. */
2634         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2635         if (ret < 0) {
2636                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2637                                         name, ret);
2638                 goto error;
2639         }
2640
2641         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2642                        name, ucode_raw->size);
2643
2644         /* Make sure that we got at least our header! */
2645         if (ucode_raw->size < sizeof(*ucode)) {
2646                 IWL_ERROR("File size way too small!\n");
2647                 ret = -EINVAL;
2648                 goto err_release;
2649         }
2650
2651         /* Data from ucode file:  header followed by uCode images */
2652         ucode = (void *)ucode_raw->data;
2653
2654         ver = le32_to_cpu(ucode->ver);
2655         inst_size = le32_to_cpu(ucode->inst_size);
2656         data_size = le32_to_cpu(ucode->data_size);
2657         init_size = le32_to_cpu(ucode->init_size);
2658         init_data_size = le32_to_cpu(ucode->init_data_size);
2659         boot_size = le32_to_cpu(ucode->boot_size);
2660
2661         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2662         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2663                        inst_size);
2664         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2665                        data_size);
2666         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2667                        init_size);
2668         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2669                        init_data_size);
2670         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2671                        boot_size);
2672
2673         /* Verify size of file vs. image size info in file's header */
2674         if (ucode_raw->size < sizeof(*ucode) +
2675                 inst_size + data_size + init_size +
2676                 init_data_size + boot_size) {
2677
2678                 IWL_DEBUG_INFO("uCode file size %d too small\n",
2679                                (int)ucode_raw->size);
2680                 ret = -EINVAL;
2681                 goto err_release;
2682         }
2683
2684         /* Verify that uCode images will fit in card's SRAM */
2685         if (inst_size > priv->hw_params.max_inst_size) {
2686                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2687                                inst_size);
2688                 ret = -EINVAL;
2689                 goto err_release;
2690         }
2691
2692         if (data_size > priv->hw_params.max_data_size) {
2693                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2694                                 data_size);
2695                 ret = -EINVAL;
2696                 goto err_release;
2697         }
2698         if (init_size > priv->hw_params.max_inst_size) {
2699                 IWL_DEBUG_INFO
2700                     ("uCode init instr len %d too large to fit in\n",
2701                       init_size);
2702                 ret = -EINVAL;
2703                 goto err_release;
2704         }
2705         if (init_data_size > priv->hw_params.max_data_size) {
2706                 IWL_DEBUG_INFO
2707                     ("uCode init data len %d too large to fit in\n",
2708                       init_data_size);
2709                 ret = -EINVAL;
2710                 goto err_release;
2711         }
2712         if (boot_size > priv->hw_params.max_bsm_size) {
2713                 IWL_DEBUG_INFO
2714                     ("uCode boot instr len %d too large to fit in\n",
2715                       boot_size);
2716                 ret = -EINVAL;
2717                 goto err_release;
2718         }
2719
2720         /* Allocate ucode buffers for card's bus-master loading ... */
2721
2722         /* Runtime instructions and 2 copies of data:
2723          * 1) unmodified from disk
2724          * 2) backup cache for save/restore during power-downs */
2725         priv->ucode_code.len = inst_size;
2726         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2727
2728         priv->ucode_data.len = data_size;
2729         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2730
2731         priv->ucode_data_backup.len = data_size;
2732         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2733
2734         /* Initialization instructions and data */
2735         if (init_size && init_data_size) {
2736                 priv->ucode_init.len = init_size;
2737                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2738
2739                 priv->ucode_init_data.len = init_data_size;
2740                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2741
2742                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2743                         goto err_pci_alloc;
2744         }
2745
2746         /* Bootstrap (instructions only, no data) */
2747         if (boot_size) {
2748                 priv->ucode_boot.len = boot_size;
2749                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2750
2751                 if (!priv->ucode_boot.v_addr)
2752                         goto err_pci_alloc;
2753         }
2754
2755         /* Copy images into buffers for card's bus-master reads ... */
2756
2757         /* Runtime instructions (first block of data in file) */
2758         src = &ucode->data[0];
2759         len = priv->ucode_code.len;
2760         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2761         memcpy(priv->ucode_code.v_addr, src, len);
2762         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2763                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2764
2765         /* Runtime data (2nd block)
2766          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
2767         src = &ucode->data[inst_size];
2768         len = priv->ucode_data.len;
2769         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2770         memcpy(priv->ucode_data.v_addr, src, len);
2771         memcpy(priv->ucode_data_backup.v_addr, src, len);
2772
2773         /* Initialization instructions (3rd block) */
2774         if (init_size) {
2775                 src = &ucode->data[inst_size + data_size];
2776                 len = priv->ucode_init.len;
2777                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2778                                 len);
2779                 memcpy(priv->ucode_init.v_addr, src, len);
2780         }
2781
2782         /* Initialization data (4th block) */
2783         if (init_data_size) {
2784                 src = &ucode->data[inst_size + data_size + init_size];
2785                 len = priv->ucode_init_data.len;
2786                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2787                                len);
2788                 memcpy(priv->ucode_init_data.v_addr, src, len);
2789         }
2790
2791         /* Bootstrap instructions (5th block) */
2792         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2793         len = priv->ucode_boot.len;
2794         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2795         memcpy(priv->ucode_boot.v_addr, src, len);
2796
2797         /* We have our copies now, allow OS release its copies */
2798         release_firmware(ucode_raw);
2799         return 0;
2800
2801  err_pci_alloc:
2802         IWL_ERROR("failed to allocate pci memory\n");
2803         ret = -ENOMEM;
2804         iwl4965_dealloc_ucode_pci(priv);
2805
2806  err_release:
2807         release_firmware(ucode_raw);
2808
2809  error:
2810         return ret;
2811 }
2812
2813 /**
2814  * iwl_alive_start - called after REPLY_ALIVE notification received
2815  *                   from protocol/runtime uCode (initialization uCode's
2816  *                   Alive gets handled by iwl_init_alive_start()).
2817  */
2818 static void iwl_alive_start(struct iwl_priv *priv)
2819 {
2820         int ret = 0;
2821
2822         IWL_DEBUG_INFO("Runtime Alive received.\n");
2823
2824         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2825                 /* We had an error bringing up the hardware, so take it
2826                  * all the way back down so we can try again */
2827                 IWL_DEBUG_INFO("Alive failed.\n");
2828                 goto restart;
2829         }
2830
2831         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2832          * This is a paranoid check, because we would not have gotten the
2833          * "runtime" alive if code weren't properly loaded.  */
2834         if (iwl_verify_ucode(priv)) {
2835                 /* Runtime instruction load was bad;
2836                  * take it all the way back down so we can try again */
2837                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2838                 goto restart;
2839         }
2840
2841         iwlcore_clear_stations_table(priv);
2842         ret = priv->cfg->ops->lib->alive_notify(priv);
2843         if (ret) {
2844                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2845                             ret);
2846                 goto restart;
2847         }
2848
2849         /* After the ALIVE response, we can send host commands to 4965 uCode */
2850         set_bit(STATUS_ALIVE, &priv->status);
2851
2852         /* Clear out the uCode error bit if it is set */
2853         clear_bit(STATUS_FW_ERROR, &priv->status);
2854
2855         if (iwl_is_rfkill(priv))
2856                 return;
2857
2858         ieee80211_wake_queues(priv->hw);
2859
2860         priv->active_rate = priv->rates_mask;
2861         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2862
2863         if (iwl_is_associated(priv)) {
2864                 struct iwl_rxon_cmd *active_rxon =
2865                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2866
2867                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2868                        sizeof(priv->staging_rxon));
2869                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2870         } else {
2871                 /* Initialize our rx_config data */
2872                 iwl4965_connection_init_rx_config(priv);
2873                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2874         }
2875
2876         /* Configure Bluetooth device coexistence support */
2877         iwl4965_send_bt_config(priv);
2878
2879         iwl_reset_run_time_calib(priv);
2880
2881         /* Configure the adapter for unassociated operation */
2882         iwl4965_commit_rxon(priv);
2883
2884         /* At this point, the NIC is initialized and operational */
2885         iwl4965_rf_kill_ct_config(priv);
2886
2887         iwl_leds_register(priv);
2888
2889         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2890         set_bit(STATUS_READY, &priv->status);
2891         wake_up_interruptible(&priv->wait_command_queue);
2892
2893         if (priv->error_recovering)
2894                 iwl4965_error_recovery(priv);
2895
2896         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
2897         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2898         return;
2899
2900  restart:
2901         queue_work(priv->workqueue, &priv->restart);
2902 }
2903
2904 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
2905
2906 static void __iwl4965_down(struct iwl_priv *priv)
2907 {
2908         unsigned long flags;
2909         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2910
2911         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2912
2913         if (!exit_pending)
2914                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2915
2916         iwl_leds_unregister(priv);
2917
2918         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2919
2920         iwlcore_clear_stations_table(priv);
2921
2922         /* Unblock any waiting calls */
2923         wake_up_interruptible_all(&priv->wait_command_queue);
2924
2925         /* Wipe out the EXIT_PENDING status bit if we are not actually
2926          * exiting the module */
2927         if (!exit_pending)
2928                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2929
2930         /* stop and reset the on-board processor */
2931         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2932
2933         /* tell the device to stop sending interrupts */
2934         spin_lock_irqsave(&priv->lock, flags);
2935         iwl4965_disable_interrupts(priv);
2936         spin_unlock_irqrestore(&priv->lock, flags);
2937         iwl_synchronize_irq(priv);
2938
2939         if (priv->mac80211_registered)
2940                 ieee80211_stop_queues(priv->hw);
2941
2942         /* If we have not previously called iwl4965_init() then
2943          * clear all bits but the RF Kill and SUSPEND bits and return */
2944         if (!iwl_is_init(priv)) {
2945                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2946                                         STATUS_RF_KILL_HW |
2947                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2948                                         STATUS_RF_KILL_SW |
2949                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2950                                         STATUS_GEO_CONFIGURED |
2951                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2952                                         STATUS_IN_SUSPEND;
2953                 goto exit;
2954         }
2955
2956         /* ...otherwise clear out all the status bits but the RF Kill and
2957          * SUSPEND bits and continue taking the NIC down. */
2958         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2959                                 STATUS_RF_KILL_HW |
2960                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2961                                 STATUS_RF_KILL_SW |
2962                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2963                                 STATUS_GEO_CONFIGURED |
2964                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2965                                 STATUS_IN_SUSPEND |
2966                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2967                                 STATUS_FW_ERROR;
2968
2969         spin_lock_irqsave(&priv->lock, flags);
2970         iwl_clear_bit(priv, CSR_GP_CNTRL,
2971                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2972         spin_unlock_irqrestore(&priv->lock, flags);
2973
2974         iwl_txq_ctx_stop(priv);
2975         iwl_rxq_stop(priv);
2976
2977         spin_lock_irqsave(&priv->lock, flags);
2978         if (!iwl_grab_nic_access(priv)) {
2979                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2980                                          APMG_CLK_VAL_DMA_CLK_RQT);
2981                 iwl_release_nic_access(priv);
2982         }
2983         spin_unlock_irqrestore(&priv->lock, flags);
2984
2985         udelay(5);
2986
2987         /* FIXME: apm_ops.suspend(priv) */
2988         priv->cfg->ops->lib->apm_ops.reset(priv);
2989         priv->cfg->ops->lib->free_shared_mem(priv);
2990
2991  exit:
2992         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2993
2994         if (priv->ibss_beacon)
2995                 dev_kfree_skb(priv->ibss_beacon);
2996         priv->ibss_beacon = NULL;
2997
2998         /* clear out any free frames */
2999         iwl_clear_free_frames(priv);
3000 }
3001
3002 static void iwl4965_down(struct iwl_priv *priv)
3003 {
3004         mutex_lock(&priv->mutex);
3005         __iwl4965_down(priv);
3006         mutex_unlock(&priv->mutex);
3007
3008         iwl4965_cancel_deferred_work(priv);
3009 }
3010
3011 #define MAX_HW_RESTARTS 5
3012
3013 static int __iwl4965_up(struct iwl_priv *priv)
3014 {
3015         int i;
3016         int ret;
3017
3018         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3019                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3020                 return -EIO;
3021         }
3022
3023         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3024                 IWL_WARNING("Radio disabled by SW RF kill (module "
3025                             "parameter)\n");
3026                 iwl_rfkill_set_hw_state(priv);
3027                 return -ENODEV;
3028         }
3029
3030         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3031                 IWL_ERROR("ucode not available for device bringup\n");
3032                 return -EIO;
3033         }
3034
3035         /* If platform's RF_KILL switch is NOT set to KILL */
3036         if (iwl_read32(priv, CSR_GP_CNTRL) &
3037                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3038                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3039         else {
3040                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3041                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3042                         iwl_rfkill_set_hw_state(priv);
3043                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3044                         return -ENODEV;
3045                 }
3046         }
3047
3048         iwl_rfkill_set_hw_state(priv);
3049         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3050
3051         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3052         if (ret) {
3053                 IWL_ERROR("Unable to allocate shared memory\n");
3054                 return ret;
3055         }
3056
3057         ret = iwl_hw_nic_init(priv);
3058         if (ret) {
3059                 IWL_ERROR("Unable to init nic\n");
3060                 return ret;
3061         }
3062
3063         /* make sure rfkill handshake bits are cleared */
3064         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3065         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3066                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3067
3068         /* clear (again), then enable host interrupts */
3069         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3070         iwl4965_enable_interrupts(priv);
3071
3072         /* really make sure rfkill handshake bits are cleared */
3073         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3074         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3075
3076         /* Copy original ucode data image from disk into backup cache.
3077          * This will be used to initialize the on-board processor's
3078          * data SRAM for a clean start when the runtime program first loads. */
3079         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3080                priv->ucode_data.len);
3081
3082         /* We return success when we resume from suspend and rf_kill is on. */
3083         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3084                 return 0;
3085
3086         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3087
3088                 iwlcore_clear_stations_table(priv);
3089
3090                 /* load bootstrap state machine,
3091                  * load bootstrap program into processor's memory,
3092                  * prepare to load the "initialize" uCode */
3093                 ret = priv->cfg->ops->lib->load_ucode(priv);
3094
3095                 if (ret) {
3096                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3097                         continue;
3098                 }
3099
3100                 /* start card; "initialize" will load runtime ucode */
3101                 iwl4965_nic_start(priv);
3102
3103                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3104
3105                 return 0;
3106         }
3107
3108         set_bit(STATUS_EXIT_PENDING, &priv->status);
3109         __iwl4965_down(priv);
3110
3111         /* tried to restart and config the device for as long as our
3112          * patience could withstand */
3113         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3114         return -EIO;
3115 }
3116
3117
3118 /*****************************************************************************
3119  *
3120  * Workqueue callbacks
3121  *
3122  *****************************************************************************/
3123
3124 static void iwl_bg_init_alive_start(struct work_struct *data)
3125 {
3126         struct iwl_priv *priv =
3127             container_of(data, struct iwl_priv, init_alive_start.work);
3128
3129         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3130                 return;
3131
3132         mutex_lock(&priv->mutex);
3133         priv->cfg->ops->lib->init_alive_start(priv);
3134         mutex_unlock(&priv->mutex);
3135 }
3136
3137 static void iwl_bg_alive_start(struct work_struct *data)
3138 {
3139         struct iwl_priv *priv =
3140             container_of(data, struct iwl_priv, alive_start.work);
3141
3142         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3143                 return;
3144
3145         mutex_lock(&priv->mutex);
3146         iwl_alive_start(priv);
3147         mutex_unlock(&priv->mutex);
3148 }
3149
3150 static void iwl4965_bg_rf_kill(struct work_struct *work)
3151 {
3152         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3153
3154         wake_up_interruptible(&priv->wait_command_queue);
3155
3156         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3157                 return;
3158
3159         mutex_lock(&priv->mutex);
3160
3161         if (!iwl_is_rfkill(priv)) {
3162                 IWL_DEBUG(IWL_DL_RF_KILL,
3163                           "HW and/or SW RF Kill no longer active, restarting "
3164                           "device\n");
3165                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3166                         queue_work(priv->workqueue, &priv->restart);
3167         } else {
3168                 /* make sure mac80211 stop sending Tx frame */
3169                 if (priv->mac80211_registered)
3170                         ieee80211_stop_queues(priv->hw);
3171
3172                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3173                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3174                                           "disabled by SW switch\n");
3175                 else
3176                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3177                                     "Kill switch must be turned off for "
3178                                     "wireless networking to work.\n");
3179         }
3180         iwl_rfkill_set_hw_state(priv);
3181
3182         mutex_unlock(&priv->mutex);
3183 }
3184
3185 static void iwl4965_bg_set_monitor(struct work_struct *work)
3186 {
3187         struct iwl_priv *priv = container_of(work,
3188                                 struct iwl_priv, set_monitor);
3189
3190         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3191
3192         mutex_lock(&priv->mutex);
3193
3194         if (!iwl_is_ready(priv))
3195                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3196         else
3197                 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3198                         IWL_ERROR("iwl4965_set_mode() failed\n");
3199
3200         mutex_unlock(&priv->mutex);
3201 }
3202
3203 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3204
3205 static void iwl4965_bg_scan_check(struct work_struct *data)
3206 {
3207         struct iwl_priv *priv =
3208             container_of(data, struct iwl_priv, scan_check.work);
3209
3210         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3211                 return;
3212
3213         mutex_lock(&priv->mutex);
3214         if (test_bit(STATUS_SCANNING, &priv->status) ||
3215             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3216                 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3217                         "adapter (%dms)\n",
3218                         jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3219
3220                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3221                         iwl4965_send_scan_abort(priv);
3222         }
3223         mutex_unlock(&priv->mutex);
3224 }
3225
3226 static void iwl4965_bg_request_scan(struct work_struct *data)
3227 {
3228         struct iwl_priv *priv =
3229             container_of(data, struct iwl_priv, request_scan);
3230         struct iwl_host_cmd cmd = {
3231                 .id = REPLY_SCAN_CMD,
3232                 .len = sizeof(struct iwl4965_scan_cmd),
3233                 .meta.flags = CMD_SIZE_HUGE,
3234         };
3235         struct iwl4965_scan_cmd *scan;
3236         struct ieee80211_conf *conf = NULL;
3237         u16 cmd_len;
3238         enum ieee80211_band band;
3239         u8 direct_mask;
3240         int ret = 0;
3241
3242         conf = ieee80211_get_hw_conf(priv->hw);
3243
3244         mutex_lock(&priv->mutex);
3245
3246         if (!iwl_is_ready(priv)) {
3247                 IWL_WARNING("request scan called when driver not ready.\n");
3248                 goto done;
3249         }
3250
3251         /* Make sure the scan wasn't cancelled before this queued work
3252          * was given the chance to run... */
3253         if (!test_bit(STATUS_SCANNING, &priv->status))
3254                 goto done;
3255
3256         /* This should never be called or scheduled if there is currently
3257          * a scan active in the hardware. */
3258         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3259                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3260                                "Ignoring second request.\n");
3261                 ret = -EIO;
3262                 goto done;
3263         }
3264
3265         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3266                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3267                 goto done;
3268         }
3269
3270         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3271                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
3272                 goto done;
3273         }
3274
3275         if (iwl_is_rfkill(priv)) {
3276                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3277                 goto done;
3278         }
3279
3280         if (!test_bit(STATUS_READY, &priv->status)) {
3281                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
3282                 goto done;
3283         }
3284
3285         if (!priv->scan_bands) {
3286                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3287                 goto done;
3288         }
3289
3290         if (!priv->scan) {
3291                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3292                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3293                 if (!priv->scan) {
3294                         ret = -ENOMEM;
3295                         goto done;
3296                 }
3297         }
3298         scan = priv->scan;
3299         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3300
3301         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3302         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3303
3304         if (iwl_is_associated(priv)) {
3305                 u16 interval = 0;
3306                 u32 extra;
3307                 u32 suspend_time = 100;
3308                 u32 scan_suspend_time = 100;
3309                 unsigned long flags;
3310
3311                 IWL_DEBUG_INFO("Scanning while associated...\n");
3312
3313                 spin_lock_irqsave(&priv->lock, flags);
3314                 interval = priv->beacon_int;
3315                 spin_unlock_irqrestore(&priv->lock, flags);
3316
3317                 scan->suspend_time = 0;
3318                 scan->max_out_time = cpu_to_le32(200 * 1024);
3319                 if (!interval)
3320                         interval = suspend_time;
3321
3322                 extra = (suspend_time / interval) << 22;
3323                 scan_suspend_time = (extra |
3324                     ((suspend_time % interval) * 1024));
3325                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3326                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3327                                scan_suspend_time, interval);
3328         }
3329
3330         /* We should add the ability for user to lock to PASSIVE ONLY */
3331         if (priv->one_direct_scan) {
3332                 IWL_DEBUG_SCAN
3333                     ("Kicking off one direct scan for '%s'\n",
3334                      iwl4965_escape_essid(priv->direct_ssid,
3335                                       priv->direct_ssid_len));
3336                 scan->direct_scan[0].id = WLAN_EID_SSID;
3337                 scan->direct_scan[0].len = priv->direct_ssid_len;
3338                 memcpy(scan->direct_scan[0].ssid,
3339                        priv->direct_ssid, priv->direct_ssid_len);
3340                 direct_mask = 1;
3341         } else if (!iwl_is_associated(priv) && priv->essid_len) {
3342                 IWL_DEBUG_SCAN
3343                   ("Kicking off one direct scan for '%s' when not associated\n",
3344                    iwl4965_escape_essid(priv->essid, priv->essid_len));
3345                 scan->direct_scan[0].id = WLAN_EID_SSID;
3346                 scan->direct_scan[0].len = priv->essid_len;
3347                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3348                 direct_mask = 1;
3349         } else {
3350                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3351                 direct_mask = 0;
3352         }
3353
3354         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3355         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3356         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3357
3358
3359         switch (priv->scan_bands) {
3360         case 2:
3361                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3362                 scan->tx_cmd.rate_n_flags =
3363                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3364                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3365
3366                 scan->good_CRC_th = 0;
3367                 band = IEEE80211_BAND_2GHZ;
3368                 break;
3369
3370         case 1:
3371                 scan->tx_cmd.rate_n_flags =
3372                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3373                                 RATE_MCS_ANT_B_MSK);
3374                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3375                 band = IEEE80211_BAND_5GHZ;
3376                 break;
3377
3378         default:
3379                 IWL_WARNING("Invalid scan band count\n");
3380                 goto done;
3381         }
3382
3383         /* We don't build a direct scan probe request; the uCode will do
3384          * that based on the direct_mask added to each channel entry */
3385         cmd_len = iwl4965_fill_probe_req(priv, band,
3386                                         (struct ieee80211_mgmt *)scan->data,
3387                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3388
3389         scan->tx_cmd.len = cpu_to_le16(cmd_len);
3390         /* select Rx chains */
3391
3392         /* Force use of chains B and C (0x6) for scan Rx.
3393          * Avoid A (0x1) because of its off-channel reception on A-band.
3394          * MIMO is not used here, but value is required to make uCode happy. */
3395         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3396                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3397                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3398                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3399
3400         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3401                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3402
3403         if (direct_mask)
3404                 scan->channel_count =
3405                         iwl4965_get_channels_for_scan(
3406                                 priv, band, 1, /* active */
3407                                 direct_mask,
3408                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3409         else
3410                 scan->channel_count =
3411                         iwl4965_get_channels_for_scan(
3412                                 priv, band, 0, /* passive */
3413                                 direct_mask,
3414                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3415
3416         scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3417                                RXON_FILTER_BCON_AWARE_MSK);
3418         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3419             scan->channel_count * sizeof(struct iwl4965_scan_channel);
3420         cmd.data = scan;
3421         scan->len = cpu_to_le16(cmd.len);
3422
3423         set_bit(STATUS_SCAN_HW, &priv->status);
3424         ret = iwl_send_cmd_sync(priv, &cmd);
3425         if (ret)
3426                 goto done;
3427
3428         queue_delayed_work(priv->workqueue, &priv->scan_check,
3429                            IWL_SCAN_CHECK_WATCHDOG);
3430
3431         mutex_unlock(&priv->mutex);
3432         return;
3433
3434  done:
3435         /* inform mac80211 scan aborted */
3436         queue_work(priv->workqueue, &priv->scan_completed);
3437         mutex_unlock(&priv->mutex);
3438 }
3439
3440 static void iwl4965_bg_up(struct work_struct *data)
3441 {
3442         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3443
3444         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3445                 return;
3446
3447         mutex_lock(&priv->mutex);
3448         __iwl4965_up(priv);
3449         mutex_unlock(&priv->mutex);
3450 }
3451
3452 static void iwl4965_bg_restart(struct work_struct *data)
3453 {
3454         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3455
3456         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3457                 return;
3458
3459         iwl4965_down(priv);
3460         queue_work(priv->workqueue, &priv->up);
3461 }
3462
3463 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3464 {
3465         struct iwl_priv *priv =
3466             container_of(data, struct iwl_priv, rx_replenish);
3467
3468         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3469                 return;
3470
3471         mutex_lock(&priv->mutex);
3472         iwl_rx_replenish(priv);
3473         mutex_unlock(&priv->mutex);
3474 }
3475
3476 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3477
3478 static void iwl4965_post_associate(struct iwl_priv *priv)
3479 {
3480         struct ieee80211_conf *conf = NULL;
3481         int ret = 0;
3482         DECLARE_MAC_BUF(mac);
3483
3484         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3485                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3486                 return;
3487         }
3488
3489         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3490                         priv->assoc_id,
3491                         print_mac(mac, priv->active_rxon.bssid_addr));
3492
3493
3494         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3495                 return;
3496
3497
3498         if (!priv->vif || !priv->is_open)
3499                 return;
3500
3501         iwl4965_scan_cancel_timeout(priv, 200);
3502
3503         conf = ieee80211_get_hw_conf(priv->hw);
3504
3505         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3506         iwl4965_commit_rxon(priv);
3507
3508         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3509         iwl4965_setup_rxon_timing(priv);
3510         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3511                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3512         if (ret)
3513                 IWL_WARNING("REPLY_RXON_TIMING failed - "
3514                             "Attempting to continue.\n");
3515
3516         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3517
3518 #ifdef CONFIG_IWL4965_HT
3519         if (priv->current_ht_config.is_ht)
3520                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3521 #endif /* CONFIG_IWL4965_HT*/
3522         iwl_set_rxon_chain(priv);
3523         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3524
3525         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3526                         priv->assoc_id, priv->beacon_int);
3527
3528         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3529                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3530         else
3531                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3532
3533         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3534                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3535                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3536                 else
3537                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3538
3539                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3540                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3541
3542         }
3543
3544         iwl4965_commit_rxon(priv);
3545
3546         switch (priv->iw_mode) {
3547         case IEEE80211_IF_TYPE_STA:
3548                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3549                 break;
3550
3551         case IEEE80211_IF_TYPE_IBSS:
3552
3553                 /* clear out the station table */
3554                 iwlcore_clear_stations_table(priv);
3555
3556                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3557                 iwl_rxon_add_station(priv, priv->bssid, 0);
3558                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3559                 iwl4965_send_beacon_cmd(priv);
3560
3561                 break;
3562
3563         default:
3564                 IWL_ERROR("%s Should not be called in %d mode\n",
3565                                 __FUNCTION__, priv->iw_mode);
3566                 break;
3567         }
3568
3569         iwl4965_sequence_reset(priv);
3570
3571         /* Enable Rx differential gain and sensitivity calibrations */
3572         iwl_chain_noise_reset(priv);
3573         priv->start_calib = 1;
3574
3575         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3576                 priv->assoc_station_added = 1;
3577
3578         iwl4965_activate_qos(priv, 0);
3579
3580         iwl_power_update_mode(priv, 0);
3581         /* we have just associated, don't start scan too early */
3582         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3583 }
3584
3585
3586 static void iwl4965_bg_post_associate(struct work_struct *data)
3587 {
3588         struct iwl_priv *priv = container_of(data, struct iwl_priv,
3589                                              post_associate.work);
3590
3591         mutex_lock(&priv->mutex);
3592         iwl4965_post_associate(priv);
3593         mutex_unlock(&priv->mutex);
3594
3595 }
3596
3597 static void iwl4965_bg_abort_scan(struct work_struct *work)
3598 {
3599         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3600
3601         if (!iwl_is_ready(priv))
3602                 return;
3603
3604         mutex_lock(&priv->mutex);
3605
3606         set_bit(STATUS_SCAN_ABORTING, &priv->status);
3607         iwl4965_send_scan_abort(priv);
3608
3609         mutex_unlock(&priv->mutex);
3610 }
3611
3612 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3613
3614 static void iwl4965_bg_scan_completed(struct work_struct *work)
3615 {
3616         struct iwl_priv *priv =
3617             container_of(work, struct iwl_priv, scan_completed);
3618
3619         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
3620
3621         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3622                 return;
3623
3624         if (test_bit(STATUS_CONF_PENDING, &priv->status))
3625                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
3626
3627         ieee80211_scan_completed(priv->hw);
3628
3629         /* Since setting the TXPOWER may have been deferred while
3630          * performing the scan, fire one off */
3631         mutex_lock(&priv->mutex);
3632         iwl4965_hw_reg_send_txpower(priv);
3633         mutex_unlock(&priv->mutex);
3634 }
3635
3636 /*****************************************************************************
3637  *
3638  * mac80211 entry point functions
3639  *
3640  *****************************************************************************/
3641
3642 #define UCODE_READY_TIMEOUT     (2 * HZ)
3643
3644 static int iwl4965_mac_start(struct ieee80211_hw *hw)
3645 {
3646         struct iwl_priv *priv = hw->priv;
3647         int ret;
3648
3649         IWL_DEBUG_MAC80211("enter\n");
3650
3651         if (pci_enable_device(priv->pci_dev)) {
3652                 IWL_ERROR("Fail to pci_enable_device\n");
3653                 return -ENODEV;
3654         }
3655         pci_restore_state(priv->pci_dev);
3656         pci_enable_msi(priv->pci_dev);
3657
3658         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
3659                           DRV_NAME, priv);
3660         if (ret) {
3661                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
3662                 goto out_disable_msi;
3663         }
3664
3665         /* we should be verifying the device is ready to be opened */
3666         mutex_lock(&priv->mutex);
3667
3668         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
3669         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3670          * ucode filename and max sizes are card-specific. */
3671
3672         if (!priv->ucode_code.len) {
3673                 ret = iwl4965_read_ucode(priv);
3674                 if (ret) {
3675                         IWL_ERROR("Could not read microcode: %d\n", ret);
3676                         mutex_unlock(&priv->mutex);
3677                         goto out_release_irq;
3678                 }
3679         }
3680
3681         ret = __iwl4965_up(priv);
3682
3683         mutex_unlock(&priv->mutex);
3684
3685         if (ret)
3686                 goto out_release_irq;
3687
3688         IWL_DEBUG_INFO("Start UP work done.\n");
3689
3690         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3691                 return 0;
3692
3693         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3694          * mac80211 will not be run successfully. */
3695         if (priv->ucode_type == UCODE_RT) {
3696                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3697                                 test_bit(STATUS_READY, &priv->status),
3698                                 UCODE_READY_TIMEOUT);
3699                 if (!ret) {
3700                         if (!test_bit(STATUS_READY, &priv->status)) {
3701                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
3702                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
3703                                 ret = -ETIMEDOUT;
3704                                 goto out_release_irq;
3705                         }
3706                 }
3707
3708                 priv->is_open = 1;
3709         }
3710         IWL_DEBUG_MAC80211("leave\n");
3711         return 0;
3712
3713 out_release_irq:
3714         free_irq(priv->pci_dev->irq, priv);
3715 out_disable_msi:
3716         pci_disable_msi(priv->pci_dev);
3717         pci_disable_device(priv->pci_dev);
3718         priv->is_open = 0;
3719         IWL_DEBUG_MAC80211("leave - failed\n");
3720         return ret;
3721 }
3722
3723 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
3724 {
3725         struct iwl_priv *priv = hw->priv;
3726
3727         IWL_DEBUG_MAC80211("enter\n");
3728
3729         if (!priv->is_open) {
3730                 IWL_DEBUG_MAC80211("leave - skip\n");
3731                 return;
3732         }
3733
3734         priv->is_open = 0;
3735
3736         if (iwl_is_ready_rf(priv)) {
3737                 /* stop mac, cancel any scan request and clear
3738                  * RXON_FILTER_ASSOC_MSK BIT
3739                  */
3740                 mutex_lock(&priv->mutex);
3741                 iwl4965_scan_cancel_timeout(priv, 100);
3742                 cancel_delayed_work(&priv->post_associate);
3743                 mutex_unlock(&priv->mutex);
3744         }
3745
3746         iwl4965_down(priv);
3747
3748         flush_workqueue(priv->workqueue);
3749         free_irq(priv->pci_dev->irq, priv);
3750         pci_disable_msi(priv->pci_dev);
3751         pci_save_state(priv->pci_dev);
3752         pci_disable_device(priv->pci_dev);
3753
3754         IWL_DEBUG_MAC80211("leave\n");
3755 }
3756
3757 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3758 {
3759         struct iwl_priv *priv = hw->priv;
3760
3761         IWL_DEBUG_MAC80211("enter\n");
3762
3763         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
3764                 IWL_DEBUG_MAC80211("leave - monitor\n");
3765                 return -1;
3766         }
3767
3768         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3769                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3770
3771         if (iwl_tx_skb(priv, skb))
3772                 dev_kfree_skb_any(skb);
3773
3774         IWL_DEBUG_MAC80211("leave\n");
3775         return 0;
3776 }
3777
3778 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
3779                                  struct ieee80211_if_init_conf *conf)
3780 {
3781         struct iwl_priv *priv = hw->priv;
3782         unsigned long flags;
3783         DECLARE_MAC_BUF(mac);
3784
3785         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
3786
3787         if (priv->vif) {
3788                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
3789                 return -EOPNOTSUPP;
3790         }
3791
3792         spin_lock_irqsave(&priv->lock, flags);
3793         priv->vif = conf->vif;
3794
3795         spin_unlock_irqrestore(&priv->lock, flags);
3796
3797         mutex_lock(&priv->mutex);
3798
3799         if (conf->mac_addr) {
3800                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
3801                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3802         }
3803
3804         if (iwl_is_ready(priv))
3805                 iwl4965_set_mode(priv, conf->type);
3806
3807         mutex_unlock(&priv->mutex);
3808
3809         IWL_DEBUG_MAC80211("leave\n");
3810         return 0;
3811 }
3812
3813 /**
3814  * iwl4965_mac_config - mac80211 config callback
3815  *
3816  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3817  * be set inappropriately and the driver currently sets the hardware up to
3818  * use it whenever needed.
3819  */
3820 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3821 {
3822         struct iwl_priv *priv = hw->priv;
3823         const struct iwl_channel_info *ch_info;
3824         unsigned long flags;
3825         int ret = 0;
3826         u16 channel;
3827
3828         mutex_lock(&priv->mutex);
3829         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
3830
3831         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3832
3833         if (!iwl_is_ready(priv)) {
3834                 IWL_DEBUG_MAC80211("leave - not ready\n");
3835                 ret = -EIO;
3836                 goto out;
3837         }
3838
3839         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
3840                      test_bit(STATUS_SCANNING, &priv->status))) {
3841                 IWL_DEBUG_MAC80211("leave - scanning\n");
3842                 set_bit(STATUS_CONF_PENDING, &priv->status);
3843                 mutex_unlock(&priv->mutex);
3844                 return 0;
3845         }
3846
3847         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3848         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
3849         if (!is_channel_valid(ch_info)) {
3850                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3851                 ret = -EINVAL;
3852                 goto out;
3853         }
3854
3855         spin_lock_irqsave(&priv->lock, flags);
3856
3857 #ifdef CONFIG_IWL4965_HT
3858         /* if we are switching from ht to 2.4 clear flags
3859          * from any ht related info since 2.4 does not
3860          * support ht */
3861         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
3862 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3863             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3864 #endif
3865         )
3866                 priv->staging_rxon.flags = 0;
3867 #endif /* CONFIG_IWL4965_HT */
3868
3869         iwl_set_rxon_channel(priv, conf->channel->band, channel);
3870
3871         iwl_set_flags_for_band(priv, conf->channel->band);
3872
3873         /* The list of supported rates and rate mask can be different
3874          * for each band; since the band may have changed, reset
3875          * the rate mask to what mac80211 lists */
3876         iwl4965_set_rate(priv);
3877
3878         spin_unlock_irqrestore(&priv->lock, flags);
3879
3880 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3881         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3882                 iwl4965_hw_channel_switch(priv, conf->channel);
3883                 goto out;
3884         }
3885 #endif
3886
3887         if (priv->cfg->ops->lib->radio_kill_sw)
3888                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
3889
3890         if (!conf->radio_enabled) {
3891                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3892                 goto out;
3893         }
3894
3895         if (iwl_is_rfkill(priv)) {
3896                 IWL_DEBUG_MAC80211("leave - RF kill\n");
3897                 ret = -EIO;
3898                 goto out;
3899         }
3900
3901         iwl4965_set_rate(priv);
3902
3903         if (memcmp(&priv->active_rxon,
3904                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
3905                 iwl4965_commit_rxon(priv);
3906         else
3907                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3908
3909         IWL_DEBUG_MAC80211("leave\n");
3910
3911 out:
3912         clear_bit(STATUS_CONF_PENDING, &priv->status);
3913         mutex_unlock(&priv->mutex);
3914         return ret;
3915 }
3916
3917 static void iwl4965_config_ap(struct iwl_priv *priv)
3918 {
3919         int ret = 0;
3920
3921         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3922                 return;
3923
3924         /* The following should be done only at AP bring up */
3925         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3926
3927                 /* RXON - unassoc (to set timing command) */
3928                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3929                 iwl4965_commit_rxon(priv);
3930
3931                 /* RXON Timing */
3932                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3933                 iwl4965_setup_rxon_timing(priv);
3934                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3935                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
3936                 if (ret)
3937                         IWL_WARNING("REPLY_RXON_TIMING failed - "
3938                                         "Attempting to continue.\n");
3939
3940                 iwl_set_rxon_chain(priv);
3941
3942                 /* FIXME: what should be the assoc_id for AP? */
3943                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3944                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3945                         priv->staging_rxon.flags |=
3946                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3947                 else
3948                         priv->staging_rxon.flags &=
3949                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3950
3951                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3952                         if (priv->assoc_capability &
3953                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3954                                 priv->staging_rxon.flags |=
3955                                         RXON_FLG_SHORT_SLOT_MSK;
3956                         else
3957                                 priv->staging_rxon.flags &=
3958                                         ~RXON_FLG_SHORT_SLOT_MSK;
3959
3960                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3961                                 priv->staging_rxon.flags &=
3962                                         ~RXON_FLG_SHORT_SLOT_MSK;
3963                 }
3964                 /* restore RXON assoc */
3965                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3966                 iwl4965_commit_rxon(priv);
3967                 iwl4965_activate_qos(priv, 1);
3968                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3969         }
3970         iwl4965_send_beacon_cmd(priv);
3971
3972         /* FIXME - we need to add code here to detect a totally new
3973          * configuration, reset the AP, unassoc, rxon timing, assoc,
3974          * clear sta table, add BCAST sta... */
3975 }
3976
3977 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
3978                                         struct ieee80211_vif *vif,
3979                                     struct ieee80211_if_conf *conf)
3980 {
3981         struct iwl_priv *priv = hw->priv;
3982         DECLARE_MAC_BUF(mac);
3983         unsigned long flags;
3984         int rc;
3985
3986         if (conf == NULL)
3987                 return -EIO;
3988
3989         if (priv->vif != vif) {
3990                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
3991                 return 0;
3992         }
3993
3994         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3995             (!conf->beacon || !conf->ssid_len)) {
3996                 IWL_DEBUG_MAC80211
3997                     ("Leaving in AP mode because HostAPD is not ready.\n");
3998                 return 0;
3999         }
4000
4001         if (!iwl_is_alive(priv))
4002                 return -EAGAIN;
4003
4004         mutex_lock(&priv->mutex);
4005
4006         if (conf->bssid)
4007                 IWL_DEBUG_MAC80211("bssid: %s\n",
4008                                    print_mac(mac, conf->bssid));
4009
4010 /*
4011  * very dubious code was here; the probe filtering flag is never set:
4012  *
4013         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4014             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4015  */
4016
4017         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4018                 if (!conf->bssid) {
4019                         conf->bssid = priv->mac_addr;
4020                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4021                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4022                                            print_mac(mac, conf->bssid));
4023                 }
4024                 if (priv->ibss_beacon)
4025                         dev_kfree_skb(priv->ibss_beacon);
4026
4027                 priv->ibss_beacon = conf->beacon;
4028         }
4029
4030         if (iwl_is_rfkill(priv))
4031                 goto done;
4032
4033         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4034             !is_multicast_ether_addr(conf->bssid)) {
4035                 /* If there is currently a HW scan going on in the background
4036                  * then we need to cancel it else the RXON below will fail. */
4037                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4038                         IWL_WARNING("Aborted scan still in progress "
4039                                     "after 100ms\n");
4040                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4041                         mutex_unlock(&priv->mutex);
4042                         return -EAGAIN;
4043                 }
4044                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4045
4046                 /* TODO: Audit driver for usage of these members and see
4047                  * if mac80211 deprecates them (priv->bssid looks like it
4048                  * shouldn't be there, but I haven't scanned the IBSS code
4049                  * to verify) - jpk */
4050                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4051
4052                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4053                         iwl4965_config_ap(priv);
4054                 else {
4055                         rc = iwl4965_commit_rxon(priv);
4056                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4057                                 iwl_rxon_add_station(
4058                                         priv, priv->active_rxon.bssid_addr, 1);
4059                 }
4060
4061         } else {
4062                 iwl4965_scan_cancel_timeout(priv, 100);
4063                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4064                 iwl4965_commit_rxon(priv);
4065         }
4066
4067  done:
4068         spin_lock_irqsave(&priv->lock, flags);
4069         if (!conf->ssid_len)
4070                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4071         else
4072                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4073
4074         priv->essid_len = conf->ssid_len;
4075         spin_unlock_irqrestore(&priv->lock, flags);
4076
4077         IWL_DEBUG_MAC80211("leave\n");
4078         mutex_unlock(&priv->mutex);
4079
4080         return 0;
4081 }
4082
4083 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4084                                  unsigned int changed_flags,
4085                                  unsigned int *total_flags,
4086                                  int mc_count, struct dev_addr_list *mc_list)
4087 {
4088         /*
4089          * XXX: dummy
4090          * see also iwl4965_connection_init_rx_config
4091          */
4092         struct iwl_priv *priv = hw->priv;
4093         int new_flags = 0;
4094         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4095                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4096                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4097                                            IEEE80211_IF_TYPE_MNTR,
4098                                            changed_flags, *total_flags);
4099                         /* queue work 'cuz mac80211 is holding a lock which
4100                          * prevents us from issuing (synchronous) f/w cmds */
4101                         queue_work(priv->workqueue, &priv->set_monitor);
4102                         new_flags &= FIF_PROMISC_IN_BSS |
4103                                      FIF_OTHER_BSS |
4104                                      FIF_ALLMULTI;
4105                 }
4106         }
4107         *total_flags = new_flags;
4108 }
4109
4110 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4111                                      struct ieee80211_if_init_conf *conf)
4112 {
4113         struct iwl_priv *priv = hw->priv;
4114
4115         IWL_DEBUG_MAC80211("enter\n");
4116
4117         mutex_lock(&priv->mutex);
4118
4119         if (iwl_is_ready_rf(priv)) {
4120                 iwl4965_scan_cancel_timeout(priv, 100);
4121                 cancel_delayed_work(&priv->post_associate);
4122                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4123                 iwl4965_commit_rxon(priv);
4124         }
4125         if (priv->vif == conf->vif) {
4126                 priv->vif = NULL;
4127                 memset(priv->bssid, 0, ETH_ALEN);
4128                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4129                 priv->essid_len = 0;
4130         }
4131         mutex_unlock(&priv->mutex);
4132
4133         IWL_DEBUG_MAC80211("leave\n");
4134
4135 }
4136
4137 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4138 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4139                                      struct ieee80211_vif *vif,
4140                                      struct ieee80211_bss_conf *bss_conf,
4141                                      u32 changes)
4142 {
4143         struct iwl_priv *priv = hw->priv;
4144
4145         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4146
4147         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4148                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4149                                    bss_conf->use_short_preamble);
4150                 if (bss_conf->use_short_preamble)
4151                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4152                 else
4153                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4154         }
4155
4156         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4157                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4158                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4159                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4160                 else
4161                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4162         }
4163
4164         if (changes & BSS_CHANGED_HT) {
4165                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4166                 iwl4965_ht_conf(priv, bss_conf);
4167                 iwl_set_rxon_chain(priv);
4168         }
4169
4170         if (changes & BSS_CHANGED_ASSOC) {
4171                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4172                 /* This should never happen as this function should
4173                  * never be called from interrupt context. */
4174                 if (WARN_ON_ONCE(in_interrupt()))
4175                         return;
4176                 if (bss_conf->assoc) {
4177                         priv->assoc_id = bss_conf->aid;
4178                         priv->beacon_int = bss_conf->beacon_int;
4179                         priv->timestamp = bss_conf->timestamp;
4180                         priv->assoc_capability = bss_conf->assoc_capability;
4181                         priv->next_scan_jiffies = jiffies +
4182                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4183                         mutex_lock(&priv->mutex);
4184                         iwl4965_post_associate(priv);
4185                         mutex_unlock(&priv->mutex);
4186                 } else {
4187                         priv->assoc_id = 0;
4188                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4189                 }
4190         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4191                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4192                         iwl_send_rxon_assoc(priv);
4193         }
4194
4195 }
4196
4197 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4198 {
4199         int rc = 0;
4200         unsigned long flags;
4201         struct iwl_priv *priv = hw->priv;
4202
4203         IWL_DEBUG_MAC80211("enter\n");
4204
4205         mutex_lock(&priv->mutex);
4206         spin_lock_irqsave(&priv->lock, flags);
4207
4208         if (!iwl_is_ready_rf(priv)) {
4209                 rc = -EIO;
4210                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4211                 goto out_unlock;
4212         }
4213
4214         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
4215                 rc = -EIO;
4216                 IWL_ERROR("ERROR: APs don't scan\n");
4217                 goto out_unlock;
4218         }
4219
4220         /* we don't schedule scan within next_scan_jiffies period */
4221         if (priv->next_scan_jiffies &&
4222                         time_after(priv->next_scan_jiffies, jiffies)) {
4223                 rc = -EAGAIN;
4224                 goto out_unlock;
4225         }
4226         /* if we just finished scan ask for delay */
4227         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4228                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
4229                 rc = -EAGAIN;
4230                 goto out_unlock;
4231         }
4232         if (len) {
4233                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4234                                iwl4965_escape_essid(ssid, len), (int)len);
4235
4236                 priv->one_direct_scan = 1;
4237                 priv->direct_ssid_len = (u8)
4238                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4239                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4240         } else
4241                 priv->one_direct_scan = 0;
4242
4243         rc = iwl4965_scan_initiate(priv);
4244
4245         IWL_DEBUG_MAC80211("leave\n");
4246
4247 out_unlock:
4248         spin_unlock_irqrestore(&priv->lock, flags);
4249         mutex_unlock(&priv->mutex);
4250
4251         return rc;
4252 }
4253
4254 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4255                         struct ieee80211_key_conf *keyconf, const u8 *addr,
4256                         u32 iv32, u16 *phase1key)
4257 {
4258         struct iwl_priv *priv = hw->priv;
4259         u8 sta_id = IWL_INVALID_STATION;
4260         unsigned long flags;
4261         __le16 key_flags = 0;
4262         int i;
4263         DECLARE_MAC_BUF(mac);
4264
4265         IWL_DEBUG_MAC80211("enter\n");
4266
4267         sta_id = iwl_find_station(priv, addr);
4268         if (sta_id == IWL_INVALID_STATION) {
4269                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4270                                    print_mac(mac, addr));
4271                 return;
4272         }
4273
4274         iwl4965_scan_cancel_timeout(priv, 100);
4275
4276         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4277         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4278         key_flags &= ~STA_KEY_FLG_INVALID;
4279
4280         if (sta_id == priv->hw_params.bcast_sta_id)
4281                 key_flags |= STA_KEY_MULTICAST_MSK;
4282
4283         spin_lock_irqsave(&priv->sta_lock, flags);
4284
4285         priv->stations[sta_id].sta.key.key_flags = key_flags;
4286         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4287
4288         for (i = 0; i < 5; i++)
4289                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4290                         cpu_to_le16(phase1key[i]);
4291
4292         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4293         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4294
4295         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4296
4297         spin_unlock_irqrestore(&priv->sta_lock, flags);
4298
4299         IWL_DEBUG_MAC80211("leave\n");
4300 }
4301
4302 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4303                            const u8 *local_addr, const u8 *addr,
4304                            struct ieee80211_key_conf *key)
4305 {
4306         struct iwl_priv *priv = hw->priv;
4307         DECLARE_MAC_BUF(mac);
4308         int ret = 0;
4309         u8 sta_id = IWL_INVALID_STATION;
4310         u8 is_default_wep_key = 0;
4311
4312         IWL_DEBUG_MAC80211("enter\n");
4313
4314         if (priv->hw_params.sw_crypto) {
4315                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4316                 return -EOPNOTSUPP;
4317         }
4318
4319         if (is_zero_ether_addr(addr))
4320                 /* only support pairwise keys */
4321                 return -EOPNOTSUPP;
4322
4323         sta_id = iwl_find_station(priv, addr);
4324         if (sta_id == IWL_INVALID_STATION) {
4325                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4326                                    print_mac(mac, addr));
4327                 return -EINVAL;
4328
4329         }
4330
4331         mutex_lock(&priv->mutex);
4332         iwl4965_scan_cancel_timeout(priv, 100);
4333         mutex_unlock(&priv->mutex);
4334
4335         /* If we are getting WEP group key and we didn't receive any key mapping
4336          * so far, we are in legacy wep mode (group key only), otherwise we are
4337          * in 1X mode.
4338          * In legacy wep mode, we use another host command to the uCode */
4339         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4340                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4341                 if (cmd == SET_KEY)
4342                         is_default_wep_key = !priv->key_mapping_key;
4343                 else
4344                         is_default_wep_key =
4345                                         (key->hw_key_idx == HW_KEY_DEFAULT);
4346         }
4347
4348         switch (cmd) {
4349         case SET_KEY:
4350                 if (is_default_wep_key)
4351                         ret = iwl_set_default_wep_key(priv, key);
4352                 else
4353                         ret = iwl_set_dynamic_key(priv, key, sta_id);
4354
4355                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4356                 break;
4357         case DISABLE_KEY:
4358                 if (is_default_wep_key)
4359                         ret = iwl_remove_default_wep_key(priv, key);
4360                 else
4361                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
4362
4363                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4364                 break;
4365         default:
4366                 ret = -EINVAL;
4367         }
4368
4369         IWL_DEBUG_MAC80211("leave\n");
4370
4371         return ret;
4372 }
4373
4374 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4375                            const struct ieee80211_tx_queue_params *params)
4376 {
4377         struct iwl_priv *priv = hw->priv;
4378         unsigned long flags;
4379         int q;
4380
4381         IWL_DEBUG_MAC80211("enter\n");
4382
4383         if (!iwl_is_ready_rf(priv)) {
4384                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4385                 return -EIO;
4386         }
4387
4388         if (queue >= AC_NUM) {
4389                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4390                 return 0;
4391         }
4392
4393         if (!priv->qos_data.qos_enable) {
4394                 priv->qos_data.qos_active = 0;
4395                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4396                 return 0;
4397         }
4398         q = AC_NUM - 1 - queue;
4399
4400         spin_lock_irqsave(&priv->lock, flags);
4401
4402         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4403         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4404         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4405         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4406                         cpu_to_le16((params->txop * 32));
4407
4408         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4409         priv->qos_data.qos_active = 1;
4410
4411         spin_unlock_irqrestore(&priv->lock, flags);
4412
4413         mutex_lock(&priv->mutex);
4414         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4415                 iwl4965_activate_qos(priv, 1);
4416         else if (priv->assoc_id && iwl_is_associated(priv))
4417                 iwl4965_activate_qos(priv, 0);
4418
4419         mutex_unlock(&priv->mutex);
4420
4421         IWL_DEBUG_MAC80211("leave\n");
4422         return 0;
4423 }
4424
4425 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4426                                 struct ieee80211_tx_queue_stats *stats)
4427 {
4428         struct iwl_priv *priv = hw->priv;
4429         int i, avail;
4430         struct iwl_tx_queue *txq;
4431         struct iwl_queue *q;
4432         unsigned long flags;
4433
4434         IWL_DEBUG_MAC80211("enter\n");
4435
4436         if (!iwl_is_ready_rf(priv)) {
4437                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4438                 return -EIO;
4439         }
4440
4441         spin_lock_irqsave(&priv->lock, flags);
4442
4443         for (i = 0; i < AC_NUM; i++) {
4444                 txq = &priv->txq[i];
4445                 q = &txq->q;
4446                 avail = iwl_queue_space(q);
4447
4448                 stats[i].len = q->n_window - avail;
4449                 stats[i].limit = q->n_window - q->high_mark;
4450                 stats[i].count = q->n_window;
4451
4452         }
4453         spin_unlock_irqrestore(&priv->lock, flags);
4454
4455         IWL_DEBUG_MAC80211("leave\n");
4456
4457         return 0;
4458 }
4459
4460 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4461                              struct ieee80211_low_level_stats *stats)
4462 {
4463         struct iwl_priv *priv = hw->priv;
4464
4465         priv = hw->priv;
4466         IWL_DEBUG_MAC80211("enter\n");
4467         IWL_DEBUG_MAC80211("leave\n");
4468
4469         return 0;
4470 }
4471
4472 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4473 {
4474         struct iwl_priv *priv;
4475
4476         priv = hw->priv;
4477         IWL_DEBUG_MAC80211("enter\n");
4478         IWL_DEBUG_MAC80211("leave\n");
4479
4480         return 0;
4481 }
4482
4483 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4484 {
4485         struct iwl_priv *priv = hw->priv;
4486         unsigned long flags;
4487
4488         mutex_lock(&priv->mutex);
4489         IWL_DEBUG_MAC80211("enter\n");
4490
4491         priv->lq_mngr.lq_ready = 0;
4492 #ifdef CONFIG_IWL4965_HT
4493         spin_lock_irqsave(&priv->lock, flags);
4494         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4495         spin_unlock_irqrestore(&priv->lock, flags);
4496 #endif /* CONFIG_IWL4965_HT */
4497
4498         iwl_reset_qos(priv);
4499
4500         cancel_delayed_work(&priv->post_associate);
4501
4502         spin_lock_irqsave(&priv->lock, flags);
4503         priv->assoc_id = 0;
4504         priv->assoc_capability = 0;
4505         priv->assoc_station_added = 0;
4506
4507         /* new association get rid of ibss beacon skb */
4508         if (priv->ibss_beacon)
4509                 dev_kfree_skb(priv->ibss_beacon);
4510
4511         priv->ibss_beacon = NULL;
4512
4513         priv->beacon_int = priv->hw->conf.beacon_int;
4514         priv->timestamp = 0;
4515         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4516                 priv->beacon_int = 0;
4517
4518         spin_unlock_irqrestore(&priv->lock, flags);
4519
4520         if (!iwl_is_ready_rf(priv)) {
4521                 IWL_DEBUG_MAC80211("leave - not ready\n");
4522                 mutex_unlock(&priv->mutex);
4523                 return;
4524         }
4525
4526         /* we are restarting association process
4527          * clear RXON_FILTER_ASSOC_MSK bit
4528          */
4529         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4530                 iwl4965_scan_cancel_timeout(priv, 100);
4531                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4532                 iwl4965_commit_rxon(priv);
4533         }
4534
4535         iwl_power_update_mode(priv, 0);
4536
4537         /* Per mac80211.h: This is only used in IBSS mode... */
4538         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4539
4540                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4541                 mutex_unlock(&priv->mutex);
4542                 return;
4543         }
4544
4545         iwl4965_set_rate(priv);
4546
4547         mutex_unlock(&priv->mutex);
4548
4549         IWL_DEBUG_MAC80211("leave\n");
4550 }
4551
4552 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4553 {
4554         struct iwl_priv *priv = hw->priv;
4555         unsigned long flags;
4556
4557         mutex_lock(&priv->mutex);
4558         IWL_DEBUG_MAC80211("enter\n");
4559
4560         if (!iwl_is_ready_rf(priv)) {
4561                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4562                 mutex_unlock(&priv->mutex);
4563                 return -EIO;
4564         }
4565
4566         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4567                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4568                 mutex_unlock(&priv->mutex);
4569                 return -EIO;
4570         }
4571
4572         spin_lock_irqsave(&priv->lock, flags);
4573
4574         if (priv->ibss_beacon)
4575                 dev_kfree_skb(priv->ibss_beacon);
4576
4577         priv->ibss_beacon = skb;
4578
4579         priv->assoc_id = 0;
4580
4581         IWL_DEBUG_MAC80211("leave\n");
4582         spin_unlock_irqrestore(&priv->lock, flags);
4583
4584         iwl_reset_qos(priv);
4585
4586         queue_work(priv->workqueue, &priv->post_associate.work);
4587
4588         mutex_unlock(&priv->mutex);
4589
4590         return 0;
4591 }
4592
4593 /*****************************************************************************
4594  *
4595  * sysfs attributes
4596  *
4597  *****************************************************************************/
4598
4599 #ifdef CONFIG_IWLWIFI_DEBUG
4600
4601 /*
4602  * The following adds a new attribute to the sysfs representation
4603  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4604  * used for controlling the debug level.
4605  *
4606  * See the level definitions in iwl for details.
4607  */
4608
4609 static ssize_t show_debug_level(struct device *d,
4610                                 struct device_attribute *attr, char *buf)
4611 {
4612         struct iwl_priv *priv = d->driver_data;
4613
4614         return sprintf(buf, "0x%08X\n", priv->debug_level);
4615 }
4616 static ssize_t store_debug_level(struct device *d,
4617                                 struct device_attribute *attr,
4618                                  const char *buf, size_t count)
4619 {
4620         struct iwl_priv *priv = d->driver_data;
4621         char *p = (char *)buf;
4622         u32 val;
4623
4624         val = simple_strtoul(p, &p, 0);
4625         if (p == buf)
4626                 printk(KERN_INFO DRV_NAME
4627                        ": %s is not in hex or decimal form.\n", buf);
4628         else
4629                 priv->debug_level = val;
4630
4631         return strnlen(buf, count);
4632 }
4633
4634 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4635                         show_debug_level, store_debug_level);
4636
4637
4638 #endif /* CONFIG_IWLWIFI_DEBUG */
4639
4640
4641 static ssize_t show_version(struct device *d,
4642                                 struct device_attribute *attr, char *buf)
4643 {
4644         struct iwl_priv *priv = d->driver_data;
4645         struct iwl_alive_resp *palive = &priv->card_alive;
4646
4647         if (palive->is_valid)
4648                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
4649                                     "fw type: 0x%01X 0x%01X\n",
4650                                 palive->ucode_major, palive->ucode_minor,
4651                                 palive->sw_rev[0], palive->sw_rev[1],
4652                                 palive->ver_type, palive->ver_subtype);
4653
4654         else
4655                 return sprintf(buf, "fw not loaded\n");
4656 }
4657
4658 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
4659
4660 static ssize_t show_temperature(struct device *d,
4661                                 struct device_attribute *attr, char *buf)
4662 {
4663         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4664
4665         if (!iwl_is_alive(priv))
4666                 return -EAGAIN;
4667
4668         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
4669 }
4670
4671 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4672
4673 static ssize_t show_rs_window(struct device *d,
4674                               struct device_attribute *attr,
4675                               char *buf)
4676 {
4677         struct iwl_priv *priv = d->driver_data;
4678         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
4679 }
4680 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
4681
4682 static ssize_t show_tx_power(struct device *d,
4683                              struct device_attribute *attr, char *buf)
4684 {
4685         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4686         return sprintf(buf, "%d\n", priv->user_txpower_limit);
4687 }
4688
4689 static ssize_t store_tx_power(struct device *d,
4690                               struct device_attribute *attr,
4691                               const char *buf, size_t count)
4692 {
4693         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4694         char *p = (char *)buf;
4695         u32 val;
4696
4697         val = simple_strtoul(p, &p, 10);
4698         if (p == buf)
4699                 printk(KERN_INFO DRV_NAME
4700                        ": %s is not in decimal form.\n", buf);
4701         else
4702                 iwl4965_hw_reg_set_txpower(priv, val);
4703
4704         return count;
4705 }
4706
4707 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4708
4709 static ssize_t show_flags(struct device *d,
4710                           struct device_attribute *attr, char *buf)
4711 {
4712         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4713
4714         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4715 }
4716
4717 static ssize_t store_flags(struct device *d,
4718                            struct device_attribute *attr,
4719                            const char *buf, size_t count)
4720 {
4721         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4722         u32 flags = simple_strtoul(buf, NULL, 0);
4723
4724         mutex_lock(&priv->mutex);
4725         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4726                 /* Cancel any currently running scans... */
4727                 if (iwl4965_scan_cancel_timeout(priv, 100))
4728                         IWL_WARNING("Could not cancel scan.\n");
4729                 else {
4730                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4731                                        flags);
4732                         priv->staging_rxon.flags = cpu_to_le32(flags);
4733                         iwl4965_commit_rxon(priv);
4734                 }
4735         }
4736         mutex_unlock(&priv->mutex);
4737
4738         return count;
4739 }
4740
4741 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4742
4743 static ssize_t show_filter_flags(struct device *d,
4744                                  struct device_attribute *attr, char *buf)
4745 {
4746         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4747
4748         return sprintf(buf, "0x%04X\n",
4749                 le32_to_cpu(priv->active_rxon.filter_flags));
4750 }
4751
4752 static ssize_t store_filter_flags(struct device *d,
4753                                   struct device_attribute *attr,
4754                                   const char *buf, size_t count)
4755 {
4756         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4757         u32 filter_flags = simple_strtoul(buf, NULL, 0);
4758
4759         mutex_lock(&priv->mutex);
4760         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4761                 /* Cancel any currently running scans... */
4762                 if (iwl4965_scan_cancel_timeout(priv, 100))
4763                         IWL_WARNING("Could not cancel scan.\n");
4764                 else {
4765                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
4766                                        "0x%04X\n", filter_flags);
4767                         priv->staging_rxon.filter_flags =
4768                                 cpu_to_le32(filter_flags);
4769                         iwl4965_commit_rxon(priv);
4770                 }
4771         }
4772         mutex_unlock(&priv->mutex);
4773
4774         return count;
4775 }
4776
4777 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4778                    store_filter_flags);
4779
4780 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4781
4782 static ssize_t show_measurement(struct device *d,
4783                                 struct device_attribute *attr, char *buf)
4784 {
4785         struct iwl_priv *priv = dev_get_drvdata(d);
4786         struct iwl4965_spectrum_notification measure_report;
4787         u32 size = sizeof(measure_report), len = 0, ofs = 0;
4788         u8 *data = (u8 *) & measure_report;
4789         unsigned long flags;
4790
4791         spin_lock_irqsave(&priv->lock, flags);
4792         if (!(priv->measurement_status & MEASUREMENT_READY)) {
4793                 spin_unlock_irqrestore(&priv->lock, flags);
4794                 return 0;
4795         }
4796         memcpy(&measure_report, &priv->measure_report, size);
4797         priv->measurement_status = 0;
4798         spin_unlock_irqrestore(&priv->lock, flags);
4799
4800         while (size && (PAGE_SIZE - len)) {
4801                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4802                                    PAGE_SIZE - len, 1);
4803                 len = strlen(buf);
4804                 if (PAGE_SIZE - len)
4805                         buf[len++] = '\n';
4806
4807                 ofs += 16;
4808                 size -= min(size, 16U);
4809         }
4810
4811         return len;
4812 }
4813
4814 static ssize_t store_measurement(struct device *d,
4815                                  struct device_attribute *attr,
4816                                  const char *buf, size_t count)
4817 {
4818         struct iwl_priv *priv = dev_get_drvdata(d);
4819         struct ieee80211_measurement_params params = {
4820                 .channel = le16_to_cpu(priv->active_rxon.channel),
4821                 .start_time = cpu_to_le64(priv->last_tsf),
4822                 .duration = cpu_to_le16(1),
4823         };
4824         u8 type = IWL_MEASURE_BASIC;
4825         u8 buffer[32];
4826         u8 channel;
4827
4828         if (count) {
4829                 char *p = buffer;
4830                 strncpy(buffer, buf, min(sizeof(buffer), count));
4831                 channel = simple_strtoul(p, NULL, 0);
4832                 if (channel)
4833                         params.channel = channel;
4834
4835                 p = buffer;
4836                 while (*p && *p != ' ')
4837                         p++;
4838                 if (*p)
4839                         type = simple_strtoul(p + 1, NULL, 0);
4840         }
4841
4842         IWL_DEBUG_INFO("Invoking measurement of type %d on "
4843                        "channel %d (for '%s')\n", type, params.channel, buf);
4844         iwl4965_get_measurement(priv, &params, type);
4845
4846         return count;
4847 }
4848
4849 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4850                    show_measurement, store_measurement);
4851 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4852
4853 static ssize_t store_retry_rate(struct device *d,
4854                                 struct device_attribute *attr,
4855                                 const char *buf, size_t count)
4856 {
4857         struct iwl_priv *priv = dev_get_drvdata(d);
4858
4859         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4860         if (priv->retry_rate <= 0)
4861                 priv->retry_rate = 1;
4862
4863         return count;
4864 }
4865
4866 static ssize_t show_retry_rate(struct device *d,
4867                                struct device_attribute *attr, char *buf)
4868 {
4869         struct iwl_priv *priv = dev_get_drvdata(d);
4870         return sprintf(buf, "%d", priv->retry_rate);
4871 }
4872
4873 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4874                    store_retry_rate);
4875
4876 static ssize_t store_power_level(struct device *d,
4877                                  struct device_attribute *attr,
4878                                  const char *buf, size_t count)
4879 {
4880         struct iwl_priv *priv = dev_get_drvdata(d);
4881         int rc;
4882         int mode;
4883
4884         mode = simple_strtoul(buf, NULL, 0);
4885         mutex_lock(&priv->mutex);
4886
4887         if (!iwl_is_ready(priv)) {
4888                 rc = -EAGAIN;
4889                 goto out;
4890         }
4891
4892         rc = iwl_power_set_user_mode(priv, mode);
4893         if (rc) {
4894                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4895                 goto out;
4896         }
4897         rc = count;
4898
4899  out:
4900         mutex_unlock(&priv->mutex);
4901         return rc;
4902 }
4903
4904 #define MAX_WX_STRING 80
4905
4906 /* Values are in microsecond */
4907 static const s32 timeout_duration[] = {
4908         350000,
4909         250000,
4910         75000,
4911         37000,
4912         25000,
4913 };
4914 static const s32 period_duration[] = {
4915         400000,
4916         700000,
4917         1000000,
4918         1000000,
4919         1000000
4920 };
4921
4922 static ssize_t show_power_level(struct device *d,
4923                                 struct device_attribute *attr, char *buf)
4924 {
4925         struct iwl_priv *priv = dev_get_drvdata(d);
4926         int level = priv->power_data.power_mode;
4927         char *p = buf;
4928
4929         p += sprintf(p, "%d ", level);
4930         switch (level) {
4931         case IWL_POWER_MODE_CAM:
4932         case IWL_POWER_AC:
4933                 p += sprintf(p, "(AC)");
4934                 break;
4935         case IWL_POWER_BATTERY:
4936                 p += sprintf(p, "(BATTERY)");
4937                 break;
4938         default:
4939                 p += sprintf(p,
4940                              "(Timeout %dms, Period %dms)",
4941                              timeout_duration[level - 1] / 1000,
4942                              period_duration[level - 1] / 1000);
4943         }
4944 /*
4945         if (!(priv->power_mode & IWL_POWER_ENABLED))
4946                 p += sprintf(p, " OFF\n");
4947         else
4948                 p += sprintf(p, " \n");
4949 */
4950         p += sprintf(p, " \n");
4951         return (p - buf + 1);
4952 }
4953
4954 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4955                    store_power_level);
4956
4957 static ssize_t show_channels(struct device *d,
4958                              struct device_attribute *attr, char *buf)
4959 {
4960         /* all this shit doesn't belong into sysfs anyway */
4961         return 0;
4962 }
4963
4964 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4965
4966 static ssize_t show_statistics(struct device *d,
4967                                struct device_attribute *attr, char *buf)
4968 {
4969         struct iwl_priv *priv = dev_get_drvdata(d);
4970         u32 size = sizeof(struct iwl4965_notif_statistics);
4971         u32 len = 0, ofs = 0;
4972         u8 *data = (u8 *) & priv->statistics;
4973         int rc = 0;
4974
4975         if (!iwl_is_alive(priv))
4976                 return -EAGAIN;
4977
4978         mutex_lock(&priv->mutex);
4979         rc = iwl_send_statistics_request(priv, 0);
4980         mutex_unlock(&priv->mutex);
4981
4982         if (rc) {
4983                 len = sprintf(buf,
4984                               "Error sending statistics request: 0x%08X\n", rc);
4985                 return len;
4986         }
4987
4988         while (size && (PAGE_SIZE - len)) {
4989                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4990                                    PAGE_SIZE - len, 1);
4991                 len = strlen(buf);
4992                 if (PAGE_SIZE - len)
4993                         buf[len++] = '\n';
4994
4995                 ofs += 16;
4996                 size -= min(size, 16U);
4997         }
4998
4999         return len;
5000 }
5001
5002 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5003
5004 static ssize_t show_status(struct device *d,
5005                            struct device_attribute *attr, char *buf)
5006 {
5007         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5008         if (!iwl_is_alive(priv))
5009                 return -EAGAIN;
5010         return sprintf(buf, "0x%08x\n", (int)priv->status);
5011 }
5012
5013 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5014
5015 /*****************************************************************************
5016  *
5017  * driver setup and teardown
5018  *
5019  *****************************************************************************/
5020
5021 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5022 {
5023         priv->workqueue = create_workqueue(DRV_NAME);
5024
5025         init_waitqueue_head(&priv->wait_command_queue);
5026
5027         INIT_WORK(&priv->up, iwl4965_bg_up);
5028         INIT_WORK(&priv->restart, iwl4965_bg_restart);
5029         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5030         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5031         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5032         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5033         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5034         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5035         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5036         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5037         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5038         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5039         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5040
5041         iwl4965_hw_setup_deferred_work(priv);
5042
5043         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5044                      iwl4965_irq_tasklet, (unsigned long)priv);
5045 }
5046
5047 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5048 {
5049         iwl4965_hw_cancel_deferred_work(priv);
5050
5051         cancel_delayed_work_sync(&priv->init_alive_start);
5052         cancel_delayed_work(&priv->scan_check);
5053         cancel_delayed_work(&priv->alive_start);
5054         cancel_delayed_work(&priv->post_associate);
5055         cancel_work_sync(&priv->beacon_update);
5056 }
5057
5058 static struct attribute *iwl4965_sysfs_entries[] = {
5059         &dev_attr_channels.attr,
5060         &dev_attr_flags.attr,
5061         &dev_attr_filter_flags.attr,
5062 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5063         &dev_attr_measurement.attr,
5064 #endif
5065         &dev_attr_power_level.attr,
5066         &dev_attr_retry_rate.attr,
5067         &dev_attr_rs_window.attr,
5068         &dev_attr_statistics.attr,
5069         &dev_attr_status.attr,
5070         &dev_attr_temperature.attr,
5071         &dev_attr_tx_power.attr,
5072 #ifdef CONFIG_IWLWIFI_DEBUG
5073         &dev_attr_debug_level.attr,
5074 #endif
5075         &dev_attr_version.attr,
5076
5077         NULL
5078 };
5079
5080 static struct attribute_group iwl4965_attribute_group = {
5081         .name = NULL,           /* put in device directory */
5082         .attrs = iwl4965_sysfs_entries,
5083 };
5084
5085 static struct ieee80211_ops iwl4965_hw_ops = {
5086         .tx = iwl4965_mac_tx,
5087         .start = iwl4965_mac_start,
5088         .stop = iwl4965_mac_stop,
5089         .add_interface = iwl4965_mac_add_interface,
5090         .remove_interface = iwl4965_mac_remove_interface,
5091         .config = iwl4965_mac_config,
5092         .config_interface = iwl4965_mac_config_interface,
5093         .configure_filter = iwl4965_configure_filter,
5094         .set_key = iwl4965_mac_set_key,
5095         .update_tkip_key = iwl4965_mac_update_tkip_key,
5096         .get_stats = iwl4965_mac_get_stats,
5097         .get_tx_stats = iwl4965_mac_get_tx_stats,
5098         .conf_tx = iwl4965_mac_conf_tx,
5099         .get_tsf = iwl4965_mac_get_tsf,
5100         .reset_tsf = iwl4965_mac_reset_tsf,
5101         .beacon_update = iwl4965_mac_beacon_update,
5102         .bss_info_changed = iwl4965_bss_info_changed,
5103 #ifdef CONFIG_IWL4965_HT
5104         .ampdu_action = iwl4965_mac_ampdu_action,
5105 #endif  /* CONFIG_IWL4965_HT */
5106         .hw_scan = iwl4965_mac_hw_scan
5107 };
5108
5109 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5110 {
5111         int err = 0;
5112         struct iwl_priv *priv;
5113         struct ieee80211_hw *hw;
5114         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5115         unsigned long flags;
5116         DECLARE_MAC_BUF(mac);
5117
5118         /************************
5119          * 1. Allocating HW data
5120          ************************/
5121
5122         /* Disabling hardware scan means that mac80211 will perform scans
5123          * "the hard way", rather than using device's scan. */
5124         if (cfg->mod_params->disable_hw_scan) {
5125                 if (cfg->mod_params->debug & IWL_DL_INFO)
5126                         dev_printk(KERN_DEBUG, &(pdev->dev),
5127                                    "Disabling hw_scan\n");
5128                 iwl4965_hw_ops.hw_scan = NULL;
5129         }
5130
5131         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5132         if (!hw) {
5133                 err = -ENOMEM;
5134                 goto out;
5135         }
5136         priv = hw->priv;
5137         /* At this point both hw and priv are allocated. */
5138
5139         SET_IEEE80211_DEV(hw, &pdev->dev);
5140
5141         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5142         priv->cfg = cfg;
5143         priv->pci_dev = pdev;
5144
5145 #ifdef CONFIG_IWLWIFI_DEBUG
5146         priv->debug_level = priv->cfg->mod_params->debug;
5147         atomic_set(&priv->restrict_refcnt, 0);
5148 #endif
5149
5150         /**************************
5151          * 2. Initializing PCI bus
5152          **************************/
5153         if (pci_enable_device(pdev)) {
5154                 err = -ENODEV;
5155                 goto out_ieee80211_free_hw;
5156         }
5157
5158         pci_set_master(pdev);
5159
5160         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5161         if (!err)
5162                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5163         if (err) {
5164                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5165                 if (!err)
5166                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5167                 /* both attempts failed: */
5168                 if (err) {
5169                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
5170                                 DRV_NAME);
5171                         goto out_pci_disable_device;
5172                 }
5173         }
5174
5175         err = pci_request_regions(pdev, DRV_NAME);
5176         if (err)
5177                 goto out_pci_disable_device;
5178
5179         pci_set_drvdata(pdev, priv);
5180
5181         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5182          * PCI Tx retries from interfering with C3 CPU state */
5183         pci_write_config_byte(pdev, 0x41, 0x00);
5184
5185         /***********************
5186          * 3. Read REV register
5187          ***********************/
5188         priv->hw_base = pci_iomap(pdev, 0, 0);
5189         if (!priv->hw_base) {
5190                 err = -ENODEV;
5191                 goto out_pci_release_regions;
5192         }
5193
5194         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5195                 (unsigned long long) pci_resource_len(pdev, 0));
5196         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5197
5198         iwl_hw_detect(priv);
5199         printk(KERN_INFO DRV_NAME
5200                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5201                 priv->cfg->name, priv->hw_rev);
5202
5203         /* amp init */
5204         err = priv->cfg->ops->lib->apm_ops.init(priv);
5205         if (err < 0) {
5206                 IWL_DEBUG_INFO("Failed to init APMG\n");
5207                 goto out_iounmap;
5208         }
5209         /*****************
5210          * 4. Read EEPROM
5211          *****************/
5212         /* Read the EEPROM */
5213         err = iwl_eeprom_init(priv);
5214         if (err) {
5215                 IWL_ERROR("Unable to init EEPROM\n");
5216                 goto out_iounmap;
5217         }
5218         err = iwl_eeprom_check_version(priv);
5219         if (err)
5220                 goto out_iounmap;
5221
5222         /* extract MAC Address */
5223         iwl_eeprom_get_mac(priv, priv->mac_addr);
5224         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5225         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5226
5227         /************************
5228          * 5. Setup HW constants
5229          ************************/
5230         /* Device-specific setup */
5231         if (priv->cfg->ops->lib->set_hw_params(priv)) {
5232                 IWL_ERROR("failed to set hw parameters\n");
5233                 goto out_free_eeprom;
5234         }
5235
5236         /*******************
5237          * 6. Setup priv
5238          *******************/
5239
5240         err = iwl_init_drv(priv);
5241         if (err)
5242                 goto out_free_eeprom;
5243         /* At this point both hw and priv are initialized. */
5244
5245         /**********************************
5246          * 7. Initialize module parameters
5247          **********************************/
5248
5249         /* Disable radio (SW RF KILL) via parameter when loading driver */
5250         if (priv->cfg->mod_params->disable) {
5251                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5252                 IWL_DEBUG_INFO("Radio disabled.\n");
5253         }
5254
5255         /********************
5256          * 8. Setup services
5257          ********************/
5258         spin_lock_irqsave(&priv->lock, flags);
5259         iwl4965_disable_interrupts(priv);
5260         spin_unlock_irqrestore(&priv->lock, flags);
5261
5262         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5263         if (err) {
5264                 IWL_ERROR("failed to create sysfs device attributes\n");
5265                 goto out_uninit_drv;
5266         }
5267
5268
5269         iwl4965_setup_deferred_work(priv);
5270         iwl4965_setup_rx_handlers(priv);
5271
5272         /********************
5273          * 9. Conclude
5274          ********************/
5275         pci_save_state(pdev);
5276         pci_disable_device(pdev);
5277
5278         /**********************************
5279          * 10. Setup and register mac80211
5280          **********************************/
5281
5282         err = iwl_setup_mac(priv);
5283         if (err)
5284                 goto out_remove_sysfs;
5285
5286         err = iwl_dbgfs_register(priv, DRV_NAME);
5287         if (err)
5288                 IWL_ERROR("failed to create debugfs files\n");
5289
5290         /* notify iwlcore to init */
5291         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5292         return 0;
5293
5294  out_remove_sysfs:
5295         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5296  out_uninit_drv:
5297         iwl_uninit_drv(priv);
5298  out_free_eeprom:
5299         iwl_eeprom_free(priv);
5300  out_iounmap:
5301         pci_iounmap(pdev, priv->hw_base);
5302  out_pci_release_regions:
5303         pci_release_regions(pdev);
5304         pci_set_drvdata(pdev, NULL);
5305  out_pci_disable_device:
5306         pci_disable_device(pdev);
5307  out_ieee80211_free_hw:
5308         ieee80211_free_hw(priv->hw);
5309  out:
5310         return err;
5311 }
5312
5313 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5314 {
5315         struct iwl_priv *priv = pci_get_drvdata(pdev);
5316         struct list_head *p, *q;
5317         int i;
5318         unsigned long flags;
5319
5320         if (!priv)
5321                 return;
5322
5323         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5324
5325         iwl_dbgfs_unregister(priv);
5326         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5327
5328         if (priv->mac80211_registered) {
5329                 ieee80211_unregister_hw(priv->hw);
5330                 priv->mac80211_registered = 0;
5331         }
5332
5333         set_bit(STATUS_EXIT_PENDING, &priv->status);
5334
5335         iwl4965_down(priv);
5336
5337         /* make sure we flush any pending irq or
5338          * tasklet for the driver
5339          */
5340         spin_lock_irqsave(&priv->lock, flags);
5341         iwl4965_disable_interrupts(priv);
5342         spin_unlock_irqrestore(&priv->lock, flags);
5343
5344         iwl_synchronize_irq(priv);
5345
5346         /* Free MAC hash list for ADHOC */
5347         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5348                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5349                         list_del(p);
5350                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5351                 }
5352         }
5353
5354         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5355
5356         iwl4965_dealloc_ucode_pci(priv);
5357
5358         if (priv->rxq.bd)
5359                 iwl_rx_queue_free(priv, &priv->rxq);
5360         iwl_hw_txq_ctx_free(priv);
5361
5362         iwlcore_clear_stations_table(priv);
5363         iwl_eeprom_free(priv);
5364
5365
5366         /*netif_stop_queue(dev); */
5367         flush_workqueue(priv->workqueue);
5368
5369         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5370          * priv->workqueue... so we can't take down the workqueue
5371          * until now... */
5372         destroy_workqueue(priv->workqueue);
5373         priv->workqueue = NULL;
5374
5375         pci_iounmap(pdev, priv->hw_base);
5376         pci_release_regions(pdev);
5377         pci_disable_device(pdev);
5378         pci_set_drvdata(pdev, NULL);
5379
5380         iwl_uninit_drv(priv);
5381
5382         if (priv->ibss_beacon)
5383                 dev_kfree_skb(priv->ibss_beacon);
5384
5385         ieee80211_free_hw(priv->hw);
5386 }
5387
5388 #ifdef CONFIG_PM
5389
5390 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5391 {
5392         struct iwl_priv *priv = pci_get_drvdata(pdev);
5393
5394         if (priv->is_open) {
5395                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5396                 iwl4965_mac_stop(priv->hw);
5397                 priv->is_open = 1;
5398         }
5399
5400         pci_set_power_state(pdev, PCI_D3hot);
5401
5402         return 0;
5403 }
5404
5405 static int iwl4965_pci_resume(struct pci_dev *pdev)
5406 {
5407         struct iwl_priv *priv = pci_get_drvdata(pdev);
5408
5409         pci_set_power_state(pdev, PCI_D0);
5410
5411         if (priv->is_open)
5412                 iwl4965_mac_start(priv->hw);
5413
5414         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5415         return 0;
5416 }
5417
5418 #endif /* CONFIG_PM */
5419
5420 /*****************************************************************************
5421  *
5422  * driver and module entry point
5423  *
5424  *****************************************************************************/
5425
5426 /* Hardware specific file defines the PCI IDs table for that hardware module */
5427 static struct pci_device_id iwl_hw_card_ids[] = {
5428         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5429         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5430 #ifdef CONFIG_IWL5000
5431         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5432         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5433         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5434 #endif /* CONFIG_IWL5000 */
5435         {0}
5436 };
5437 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5438
5439 static struct pci_driver iwl_driver = {
5440         .name = DRV_NAME,
5441         .id_table = iwl_hw_card_ids,
5442         .probe = iwl4965_pci_probe,
5443         .remove = __devexit_p(iwl4965_pci_remove),
5444 #ifdef CONFIG_PM
5445         .suspend = iwl4965_pci_suspend,
5446         .resume = iwl4965_pci_resume,
5447 #endif
5448 };
5449
5450 static int __init iwl4965_init(void)
5451 {
5452
5453         int ret;
5454         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5455         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5456
5457         ret = iwl4965_rate_control_register();
5458         if (ret) {
5459                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5460                 return ret;
5461         }
5462
5463         ret = pci_register_driver(&iwl_driver);
5464         if (ret) {
5465                 IWL_ERROR("Unable to initialize PCI module\n");
5466                 goto error_register;
5467         }
5468
5469         return ret;
5470
5471 error_register:
5472         iwl4965_rate_control_unregister();
5473         return ret;
5474 }
5475
5476 static void __exit iwl4965_exit(void)
5477 {
5478         pci_unregister_driver(&iwl_driver);
5479         iwl4965_rate_control_unregister();
5480 }
5481
5482 module_exit(iwl4965_exit);
5483 module_init(iwl4965_init);