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 static void iwl4965_ht_conf(struct iwl_priv *priv,
 638                             struct ieee80211_bss_conf *bss_conf)
 639 {
 640         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 641         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 642         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 643
 644         IWL_DEBUG_MAC80211("enter: \n");
 645
 646         iwl_conf->is_ht = bss_conf->assoc_ht;
 647
 648         if (!iwl_conf->is_ht)
 649                 return;
 650
 651         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 652
 653         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 654                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 655         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 656                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 657
 658         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 659         iwl_conf->max_amsdu_size =
 660                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 661
 662         iwl_conf->supported_chan_width =
 663                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 664         iwl_conf->extension_chan_offset =
 665                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 666         /* If no above or below channel supplied disable FAT channel */
 667         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 668             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 669                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 670                 iwl_conf->supported_chan_width = 0;
 671         }
 672
 673         iwl_conf->tx_mimo_ps_mode =
 674                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 675         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 676
 677         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 678         iwl_conf->tx_chan_width =
 679                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 680         iwl_conf->ht_protection =
 681                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 682         iwl_conf->non_GF_STA_present =
 683                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 684
 685         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 686         IWL_DEBUG_MAC80211("leave\n");
 687 }
 688
 689 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 690                         u8 *pos, int *left)
 691 {
 692         struct ieee80211_ht_cap *ht_cap;
 693
 694         if (!sband || !sband->ht_info.ht_supported)
 695                 return;
 696
 697         if (*left < sizeof(struct ieee80211_ht_cap))
 698                 return;
 699
 700         *pos++ = sizeof(struct ieee80211_ht_cap);
 701         ht_cap = (struct ieee80211_ht_cap *) pos;
 702
 703         ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
 704         memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
 705         ht_cap->ampdu_params_info =
 706                 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
 707                 ((sband->ht_info.ampdu_density << 2) &
 708                         IEEE80211_HT_CAP_AMPDU_DENSITY);
 709         *left -= sizeof(struct ieee80211_ht_cap);
 710 }
 711
 712 /**
 713  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
 714  */
 715 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
 716                                   enum ieee80211_band band,
 717                                   struct ieee80211_mgmt *frame,
 718                                   int left, int is_direct)
 719 {
 720         int len = 0;
 721         u8 *pos = NULL;
 722         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
 723         const struct ieee80211_supported_band *sband =
 724                                                 iwl_get_hw_mode(priv, band);
 725
 726         /* Make sure there is enough space for the probe request,
 727          * two mandatory IEs and the data */
 728         left -= 24;
 729         if (left < 0)
 730                 return 0;
 731         len += 24;
 732
 733         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 734         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
 735         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
 736         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
 737         frame->seq_ctrl = 0;
 738
 739         /* fill in our indirect SSID IE */
 740         /* ...next IE... */
 741
 742         left -= 2;
 743         if (left < 0)
 744                 return 0;
 745         len += 2;
 746         pos = &(frame->u.probe_req.variable[0]);
 747         *pos++ = WLAN_EID_SSID;
 748         *pos++ = 0;
 749
 750         /* fill in our direct SSID IE... */
 751         if (is_direct) {
 752                 /* ...next IE... */
 753                 left -= 2 + priv->essid_len;
 754                 if (left < 0)
 755                         return 0;
 756                 /* ... fill it in... */
 757                 *pos++ = WLAN_EID_SSID;
 758                 *pos++ = priv->essid_len;
 759                 memcpy(pos, priv->essid, priv->essid_len);
 760                 pos += priv->essid_len;
 761                 len += 2 + priv->essid_len;
 762         }
 763
 764         /* fill in supported rate */
 765         /* ...next IE... */
 766         left -= 2;
 767         if (left < 0)
 768                 return 0;
 769
 770         /* ... fill it in... */
 771         *pos++ = WLAN_EID_SUPP_RATES;
 772         *pos = 0;
 773
 774         /* exclude 60M rate */
 775         active_rates = priv->rates_mask;
 776         active_rates &= ~IWL_RATE_60M_MASK;
 777
 778         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
 779
 780         cck_rates = IWL_CCK_RATES_MASK & active_rates;
 781         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
 782                         active_rate_basic, &left);
 783         active_rates &= ~ret_rates;
 784
 785         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
 786                                  active_rate_basic, &left);
 787         active_rates &= ~ret_rates;
 788
 789         len += 2 + *pos;
 790         pos += (*pos) + 1;
 791         if (active_rates == 0)
 792                 goto fill_end;
 793
 794         /* fill in supported extended rate */
 795         /* ...next IE... */
 796         left -= 2;
 797         if (left < 0)
 798                 return 0;
 799         /* ... fill it in... */
 800         *pos++ = WLAN_EID_EXT_SUPP_RATES;
 801         *pos = 0;
 802         iwl4965_supported_rate_to_ie(pos, active_rates,
 803                                  active_rate_basic, &left);
 804         if (*pos > 0)
 805                 len += 2 + *pos;
 806
 807  fill_end:
 808         /* fill in HT IE */
 809         left -= 2;
 810         if (left < 0)
 811                 return 0;
 812
 813         *pos++ = WLAN_EID_HT_CAPABILITY;
 814         *pos = 0;
 815
 816         iwl_ht_cap_to_ie(sband, pos, &left);
 817
 818         if (*pos > 0)
 819                 len += 2 + *pos;
 820         return (u16)len;
 821 }
 822
 823 /*
 824  * QoS  support
 825 */
 826 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 827                                        struct iwl4965_qosparam_cmd *qos)
 828 {
 829
 830         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 831                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 832 }
 833
 834 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 835 {
 836         unsigned long flags;
 837
 838         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 839                 return;
 840
 841         if (!priv->qos_data.qos_enable)
 842                 return;
 843
 844         spin_lock_irqsave(&priv->lock, flags);
 845         priv->qos_data.def_qos_parm.qos_flags = 0;
 846
 847         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 848             !priv->qos_data.qos_cap.q_AP.txop_request)
 849                 priv->qos_data.def_qos_parm.qos_flags |=
 850                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 851         if (priv->qos_data.qos_active)
 852                 priv->qos_data.def_qos_parm.qos_flags |=
 853                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 854
 855         if (priv->current_ht_config.is_ht)
 856                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 857
 858         spin_unlock_irqrestore(&priv->lock, flags);
 859
 860         if (force || iwl_is_associated(priv)) {
 861                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 862                                 priv->qos_data.qos_active,
 863                                 priv->qos_data.def_qos_parm.qos_flags);
 864
 865                 iwl4965_send_qos_params_command(priv,
 866                                 &(priv->qos_data.def_qos_parm));
 867         }
 868 }
 869
 870 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 871 {
 872         /* Filter incoming packets to determine if they are targeted toward
 873          * this network, discarding packets coming from ourselves */
 874         switch (priv->iw_mode) {
 875         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
 876                 /* packets from our adapter are dropped (echo) */
 877                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
 878                         return 0;
 879                 /* {broad,multi}cast packets to our IBSS go through */
 880                 if (is_multicast_ether_addr(header->addr1))
 881                         return !compare_ether_addr(header->addr3, priv->bssid);
 882                 /* packets to our adapter go through */
 883                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 884         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
 885                 /* packets from our adapter are dropped (echo) */
 886                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
 887                         return 0;
 888                 /* {broad,multi}cast packets to our BSS go through */
 889                 if (is_multicast_ether_addr(header->addr1))
 890                         return !compare_ether_addr(header->addr2, priv->bssid);
 891                 /* packets to our adapter go through */
 892                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 893         default:
 894                 break;
 895         }
 896
 897         return 1;
 898 }
 899
 900
 901
 902 /**
 903  * iwl4965_scan_cancel - Cancel any currently executing HW scan
 904  *
 905  * NOTE: priv->mutex is not required before calling this function
 906  */
 907 static int iwl4965_scan_cancel(struct iwl_priv *priv)
 908 {
 909         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 910                 clear_bit(STATUS_SCANNING, &priv->status);
 911                 return 0;
 912         }
 913
 914         if (test_bit(STATUS_SCANNING, &priv->status)) {
 915                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
 916                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
 917                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
 918                         queue_work(priv->workqueue, &priv->abort_scan);
 919
 920                 } else
 921                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
 922
 923                 return test_bit(STATUS_SCANNING, &priv->status);
 924         }
 925
 926         return 0;
 927 }
 928
 929 /**
 930  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
 931  * @ms: amount of time to wait (in milliseconds) for scan to abort
 932  *
 933  * NOTE: priv->mutex must be held before calling this function
 934  */
 935 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
 936 {
 937         unsigned long now = jiffies;
 938         int ret;
 939
 940         ret = iwl4965_scan_cancel(priv);
 941         if (ret && ms) {
 942                 mutex_unlock(&priv->mutex);
 943                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
 944                                 test_bit(STATUS_SCANNING, &priv->status))
 945                         msleep(1);
 946                 mutex_lock(&priv->mutex);
 947
 948                 return test_bit(STATUS_SCANNING, &priv->status);
 949         }
 950
 951         return ret;
 952 }
 953
 954 static void iwl4965_sequence_reset(struct iwl_priv *priv)
 955 {
 956         /* Reset ieee stats */
 957
 958         /* We don't reset the net_device_stats (ieee->stats) on
 959          * re-association */
 960
 961         priv->last_seq_num = -1;
 962         priv->last_frag_num = -1;
 963         priv->last_packet_time = 0;
 964
 965         iwl4965_scan_cancel(priv);
 966 }
 967
 968 #define MAX_UCODE_BEACON_INTERVAL       4096
 969 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 970
 971 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 972 {
 973         u16 new_val = 0;
 974         u16 beacon_factor = 0;
 975
 976         beacon_factor =
 977             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 978                 / MAX_UCODE_BEACON_INTERVAL;
 979         new_val = beacon_val / beacon_factor;
 980
 981         return cpu_to_le16(new_val);
 982 }
 983
 984 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 985 {
 986         u64 interval_tm_unit;
 987         u64 tsf, result;
 988         unsigned long flags;
 989         struct ieee80211_conf *conf = NULL;
 990         u16 beacon_int = 0;
 991
 992         conf = ieee80211_get_hw_conf(priv->hw);
 993
 994         spin_lock_irqsave(&priv->lock, flags);
 995         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 996         priv->rxon_timing.timestamp.dw[0] =
 997                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 998
 999         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1000
1001         tsf = priv->timestamp;
1002
1003         beacon_int = priv->beacon_int;
1004         spin_unlock_irqrestore(&priv->lock, flags);
1005
1006         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1007                 if (beacon_int == 0) {
1008                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1009                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1010                 } else {
1011                         priv->rxon_timing.beacon_interval =
1012                                 cpu_to_le16(beacon_int);
1013                         priv->rxon_timing.beacon_interval =
1014                             iwl4965_adjust_beacon_interval(
1015                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1016                 }
1017
1018                 priv->rxon_timing.atim_window = 0;
1019         } else {
1020                 priv->rxon_timing.beacon_interval =
1021                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1022                 /* TODO: we need to get atim_window from upper stack
1023                  * for now we set to 0 */
1024                 priv->rxon_timing.atim_window = 0;
1025         }
1026
1027         interval_tm_unit =
1028                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1029         result = do_div(tsf, interval_tm_unit);
1030         priv->rxon_timing.beacon_init_val =
1031             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1032
1033         IWL_DEBUG_ASSOC
1034             ("beacon interval %d beacon timer %d beacon tim %d\n",
1035                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1036                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1037                 le16_to_cpu(priv->rxon_timing.atim_window));
1038 }
1039
1040 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1041 {
1042         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1043                 IWL_ERROR("APs don't scan.\n");
1044                 return 0;
1045         }
1046
1047         if (!iwl_is_ready_rf(priv)) {
1048                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1049                 return -EIO;
1050         }
1051
1052         if (test_bit(STATUS_SCANNING, &priv->status)) {
1053                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1054                 return -EAGAIN;
1055         }
1056
1057         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1058                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1059                                "Queuing.\n");
1060                 return -EAGAIN;
1061         }
1062
1063         IWL_DEBUG_INFO("Starting scan...\n");
1064         priv->scan_bands = 2;
1065         set_bit(STATUS_SCANNING, &priv->status);
1066         priv->scan_start = jiffies;
1067         priv->scan_pass_start = priv->scan_start;
1068
1069         queue_work(priv->workqueue, &priv->request_scan);
1070
1071         return 0;
1072 }
1073
1074
1075 static void iwl_set_flags_for_band(struct iwl_priv *priv,
1076                                    enum ieee80211_band band)
1077 {
1078         if (band == IEEE80211_BAND_5GHZ) {
1079                 priv->staging_rxon.flags &=
1080                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1081                       | RXON_FLG_CCK_MSK);
1082                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1083         } else {
1084                 /* Copied from iwl4965_post_associate() */
1085                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1086                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1087                 else
1088                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1089
1090                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1091                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1092
1093                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1094                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1095                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1096         }
1097 }
1098
1099 /*
1100  * initialize rxon structure with default values from eeprom
1101  */
1102 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1103 {
1104         const struct iwl_channel_info *ch_info;
1105
1106         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1107
1108         switch (priv->iw_mode) {
1109         case IEEE80211_IF_TYPE_AP:
1110                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1111                 break;
1112
1113         case IEEE80211_IF_TYPE_STA:
1114                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1115                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1116                 break;
1117
1118         case IEEE80211_IF_TYPE_IBSS:
1119                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1120                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1121                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1122                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1123                 break;
1124
1125         case IEEE80211_IF_TYPE_MNTR:
1126                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1127                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1128                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1129                 break;
1130         default:
1131                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1132                 break;
1133         }
1134
1135 #if 0
1136         /* TODO:  Figure out when short_preamble would be set and cache from
1137          * that */
1138         if (!hw_to_local(priv->hw)->short_preamble)
1139                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1140         else
1141                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1142 #endif
1143
1144         ch_info = iwl_get_channel_info(priv, priv->band,
1145                                        le16_to_cpu(priv->staging_rxon.channel));
1146
1147         if (!ch_info)
1148                 ch_info = &priv->channel_info[0];
1149
1150         /*
1151          * in some case A channels are all non IBSS
1152          * in this case force B/G channel
1153          */
1154         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1155             !(is_channel_ibss(ch_info)))
1156                 ch_info = &priv->channel_info[0];
1157
1158         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1159         priv->band = ch_info->band;
1160
1161         iwl_set_flags_for_band(priv, priv->band);
1162
1163         priv->staging_rxon.ofdm_basic_rates =
1164             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1165         priv->staging_rxon.cck_basic_rates =
1166             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1167
1168         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1169                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1170         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1171         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1172         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1173         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1174         iwl_set_rxon_chain(priv);
1175 }
1176
1177 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1178 {
1179         priv->iw_mode = mode;
1180
1181         /* init channel/phymode to values given at driver init */
1182         iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
1183
1184         iwl4965_connection_init_rx_config(priv);
1185         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1186
1187         iwlcore_clear_stations_table(priv);
1188
1189         /* dont commit rxon if rf-kill is on*/
1190         if (!iwl_is_ready_rf(priv))
1191                 return -EAGAIN;
1192
1193         cancel_delayed_work(&priv->scan_check);
1194         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1195                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1196                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1197                 return -EAGAIN;
1198         }
1199
1200         iwl4965_commit_rxon(priv);
1201
1202         return 0;
1203 }
1204
1205 static void iwl4965_set_rate(struct iwl_priv *priv)
1206 {
1207         const struct ieee80211_supported_band *hw = NULL;
1208         struct ieee80211_rate *rate;
1209         int i;
1210
1211         hw = iwl_get_hw_mode(priv, priv->band);
1212         if (!hw) {
1213                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1214                 return;
1215         }
1216
1217         priv->active_rate = 0;
1218         priv->active_rate_basic = 0;
1219
1220         for (i = 0; i < hw->n_bitrates; i++) {
1221                 rate = &(hw->bitrates[i]);
1222                 if (rate->hw_value < IWL_RATE_COUNT)
1223                         priv->active_rate |= (1 << rate->hw_value);
1224         }
1225
1226         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1227                        priv->active_rate, priv->active_rate_basic);
1228
1229         /*
1230          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1231          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1232          * OFDM
1233          */
1234         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1235                 priv->staging_rxon.cck_basic_rates =
1236                     ((priv->active_rate_basic &
1237                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1238         else
1239                 priv->staging_rxon.cck_basic_rates =
1240                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1241
1242         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1243                 priv->staging_rxon.ofdm_basic_rates =
1244                     ((priv->active_rate_basic &
1245                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1246                       IWL_FIRST_OFDM_RATE) & 0xFF;
1247         else
1248                 priv->staging_rxon.ofdm_basic_rates =
1249                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1250 }
1251
1252 int iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1253 {
1254         unsigned long flags;
1255
1256         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1257                 return 0;
1258
1259         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1260                           disable_radio ? "OFF" : "ON");
1261
1262         if (disable_radio) {
1263                 iwl4965_scan_cancel(priv);
1264                 /* FIXME: This is a workaround for AP */
1265                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1266                         spin_lock_irqsave(&priv->lock, flags);
1267                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1268                                     CSR_UCODE_SW_BIT_RFKILL);
1269                         spin_unlock_irqrestore(&priv->lock, flags);
1270                         /* call the host command only if no hw rf-kill set */
1271                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1272                             iwl_is_ready(priv))
1273                                 iwl4965_send_card_state(priv,
1274                                                         CARD_STATE_CMD_DISABLE,
1275                                                         0);
1276                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1277
1278                         /* make sure mac80211 stop sending Tx frame */
1279                         if (priv->mac80211_registered)
1280                                 ieee80211_stop_queues(priv->hw);
1281                 }
1282                 return 0;
1283         }
1284
1285         spin_lock_irqsave(&priv->lock, flags);
1286         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1287
1288         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1289         spin_unlock_irqrestore(&priv->lock, flags);
1290
1291         /* wake up ucode */
1292         msleep(10);
1293
1294         spin_lock_irqsave(&priv->lock, flags);
1295         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1296         if (!iwl_grab_nic_access(priv))
1297                 iwl_release_nic_access(priv);
1298         spin_unlock_irqrestore(&priv->lock, flags);
1299
1300         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1301                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1302                                   "disabled by HW switch\n");
1303                 return 0;
1304         }
1305
1306         queue_work(priv->workqueue, &priv->restart);
1307         return 1;
1308 }
1309
1310 #define IWL_PACKET_RETRY_TIME HZ
1311
1312 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1313 {
1314         u16 sc = le16_to_cpu(header->seq_ctrl);
1315         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1316         u16 frag = sc & IEEE80211_SCTL_FRAG;
1317         u16 *last_seq, *last_frag;
1318         unsigned long *last_time;
1319
1320         switch (priv->iw_mode) {
1321         case IEEE80211_IF_TYPE_IBSS:{
1322                 struct list_head *p;
1323                 struct iwl4965_ibss_seq *entry = NULL;
1324                 u8 *mac = header->addr2;
1325                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1326
1327                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1328                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
1329                         if (!compare_ether_addr(entry->mac, mac))
1330                                 break;
1331                 }
1332                 if (p == &priv->ibss_mac_hash[index]) {
1333                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1334                         if (!entry) {
1335                                 IWL_ERROR("Cannot malloc new mac entry\n");
1336                                 return 0;
1337                         }
1338                         memcpy(entry->mac, mac, ETH_ALEN);
1339                         entry->seq_num = seq;
1340                         entry->frag_num = frag;
1341                         entry->packet_time = jiffies;
1342                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1343                         return 0;
1344                 }
1345                 last_seq = &entry->seq_num;
1346                 last_frag = &entry->frag_num;
1347                 last_time = &entry->packet_time;
1348                 break;
1349         }
1350         case IEEE80211_IF_TYPE_STA:
1351                 last_seq = &priv->last_seq_num;
1352                 last_frag = &priv->last_frag_num;
1353                 last_time = &priv->last_packet_time;
1354                 break;
1355         default:
1356                 return 0;
1357         }
1358         if ((*last_seq == seq) &&
1359             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1360                 if (*last_frag == frag)
1361                         goto drop;
1362                 if (*last_frag + 1 != frag)
1363                         /* out-of-order fragment */
1364                         goto drop;
1365         } else
1366                 *last_seq = seq;
1367
1368         *last_frag = frag;
1369         *last_time = jiffies;
1370         return 0;
1371
1372  drop:
1373         return 1;
1374 }
1375
1376 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1377
1378 #include "iwl-spectrum.h"
1379
1380 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1381 #define BEACON_TIME_MASK_HIGH   0xFF000000
1382 #define TIME_UNIT               1024
1383
1384 /*
1385  * extended beacon time format
1386  * time in usec will be changed into a 32-bit value in 8:24 format
1387  * the high 1 byte is the beacon counts
1388  * the lower 3 bytes is the time in usec within one beacon interval
1389  */
1390
1391 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1392 {
1393         u32 quot;
1394         u32 rem;
1395         u32 interval = beacon_interval * 1024;
1396
1397         if (!interval || !usec)
1398                 return 0;
1399
1400         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1401         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1402
1403         return (quot << 24) + rem;
1404 }
1405
1406 /* base is usually what we get from ucode with each received frame,
1407  * the same as HW timer counter counting down
1408  */
1409
1410 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1411 {
1412         u32 base_low = base & BEACON_TIME_MASK_LOW;
1413         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1414         u32 interval = beacon_interval * TIME_UNIT;
1415         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1416             (addon & BEACON_TIME_MASK_HIGH);
1417
1418         if (base_low > addon_low)
1419                 res += base_low - addon_low;
1420         else if (base_low < addon_low) {
1421                 res += interval + base_low - addon_low;
1422                 res += (1 << 24);
1423         } else
1424                 res += (1 << 24);
1425
1426         return cpu_to_le32(res);
1427 }
1428
1429 static int iwl4965_get_measurement(struct iwl_priv *priv,
1430                                struct ieee80211_measurement_params *params,
1431                                u8 type)
1432 {
1433         struct iwl4965_spectrum_cmd spectrum;
1434         struct iwl_rx_packet *res;
1435         struct iwl_host_cmd cmd = {
1436                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1437                 .data = (void *)&spectrum,
1438                 .meta.flags = CMD_WANT_SKB,
1439         };
1440         u32 add_time = le64_to_cpu(params->start_time);
1441         int rc;
1442         int spectrum_resp_status;
1443         int duration = le16_to_cpu(params->duration);
1444
1445         if (iwl_is_associated(priv))
1446                 add_time =
1447                     iwl4965_usecs_to_beacons(
1448                         le64_to_cpu(params->start_time) - priv->last_tsf,
1449                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1450
1451         memset(&spectrum, 0, sizeof(spectrum));
1452
1453         spectrum.channel_count = cpu_to_le16(1);
1454         spectrum.flags =
1455             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1456         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1457         cmd.len = sizeof(spectrum);
1458         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1459
1460         if (iwl_is_associated(priv))
1461                 spectrum.start_time =
1462                     iwl4965_add_beacon_time(priv->last_beacon_time,
1463                                 add_time,
1464                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1465         else
1466                 spectrum.start_time = 0;
1467
1468         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1469         spectrum.channels[0].channel = params->channel;
1470         spectrum.channels[0].type = type;
1471         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1472                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1473                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1474
1475         rc = iwl_send_cmd_sync(priv, &cmd);
1476         if (rc)
1477                 return rc;
1478
1479         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1480         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1481                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1482                 rc = -EIO;
1483         }
1484
1485         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1486         switch (spectrum_resp_status) {
1487         case 0:         /* Command will be handled */
1488                 if (res->u.spectrum.id != 0xff) {
1489                         IWL_DEBUG_INFO
1490                             ("Replaced existing measurement: %d\n",
1491                              res->u.spectrum.id);
1492                         priv->measurement_status &= ~MEASUREMENT_READY;
1493                 }
1494                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1495                 rc = 0;
1496                 break;
1497
1498         case 1:         /* Command will not be handled */
1499                 rc = -EAGAIN;
1500                 break;
1501         }
1502
1503         dev_kfree_skb_any(cmd.meta.u.skb);
1504
1505         return rc;
1506 }
1507 #endif
1508
1509 /******************************************************************************
1510  *
1511  * Generic RX handler implementations
1512  *
1513  ******************************************************************************/
1514 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1515                                 struct iwl_rx_mem_buffer *rxb)
1516 {
1517         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1518         struct iwl_alive_resp *palive;
1519         struct delayed_work *pwork;
1520
1521         palive = &pkt->u.alive_frame;
1522
1523         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1524                        "0x%01X 0x%01X\n",
1525                        palive->is_valid, palive->ver_type,
1526                        palive->ver_subtype);
1527
1528         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1529                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1530                 memcpy(&priv->card_alive_init,
1531                        &pkt->u.alive_frame,
1532                        sizeof(struct iwl_init_alive_resp));
1533                 pwork = &priv->init_alive_start;
1534         } else {
1535                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1536                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1537                        sizeof(struct iwl_alive_resp));
1538                 pwork = &priv->alive_start;
1539         }
1540
1541         /* We delay the ALIVE response by 5ms to
1542          * give the HW RF Kill time to activate... */
1543         if (palive->is_valid == UCODE_VALID_OK)
1544                 queue_delayed_work(priv->workqueue, pwork,
1545                                    msecs_to_jiffies(5));
1546         else
1547                 IWL_WARNING("uCode did not respond OK.\n");
1548 }
1549
1550 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1551                                    struct iwl_rx_mem_buffer *rxb)
1552 {
1553         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1554
1555         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1556                 "seq 0x%04X ser 0x%08X\n",
1557                 le32_to_cpu(pkt->u.err_resp.error_type),
1558                 get_cmd_string(pkt->u.err_resp.cmd_id),
1559                 pkt->u.err_resp.cmd_id,
1560                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1561                 le32_to_cpu(pkt->u.err_resp.error_info));
1562 }
1563
1564 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1565
1566 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1567 {
1568         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1569         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1570         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1571         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1572                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1573         rxon->channel = csa->channel;
1574         priv->staging_rxon.channel = csa->channel;
1575 }
1576
1577 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1578                                           struct iwl_rx_mem_buffer *rxb)
1579 {
1580 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1581         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1582         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1583
1584         if (!report->state) {
1585                 IWL_DEBUG(IWL_DL_11H,
1586                         "Spectrum Measure Notification: Start\n");
1587                 return;
1588         }
1589
1590         memcpy(&priv->measure_report, report, sizeof(*report));
1591         priv->measurement_status |= MEASUREMENT_READY;
1592 #endif
1593 }
1594
1595 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1596                                       struct iwl_rx_mem_buffer *rxb)
1597 {
1598 #ifdef CONFIG_IWLWIFI_DEBUG
1599         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1600         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1601         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1602                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1603 #endif
1604 }
1605
1606 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1607                                              struct iwl_rx_mem_buffer *rxb)
1608 {
1609         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1610         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1611                         "notification for %s:\n",
1612                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1613         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1614 }
1615
1616 static void iwl4965_bg_beacon_update(struct work_struct *work)
1617 {
1618         struct iwl_priv *priv =
1619                 container_of(work, struct iwl_priv, beacon_update);
1620         struct sk_buff *beacon;
1621
1622         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1623         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1624
1625         if (!beacon) {
1626                 IWL_ERROR("update beacon failed\n");
1627                 return;
1628         }
1629
1630         mutex_lock(&priv->mutex);
1631         /* new beacon skb is allocated every time; dispose previous.*/
1632         if (priv->ibss_beacon)
1633                 dev_kfree_skb(priv->ibss_beacon);
1634
1635         priv->ibss_beacon = beacon;
1636         mutex_unlock(&priv->mutex);
1637
1638         iwl4965_send_beacon_cmd(priv);
1639 }
1640
1641 /**
1642  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1643  *
1644  * This callback is provided in order to send a statistics request.
1645  *
1646  * This timer function is continually reset to execute within
1647  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1648  * was received.  We need to ensure we receive the statistics in order
1649  * to update the temperature used for calibrating the TXPOWER.
1650  */
1651 static void iwl4965_bg_statistics_periodic(unsigned long data)
1652 {
1653         struct iwl_priv *priv = (struct iwl_priv *)data;
1654
1655         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1656                 return;
1657
1658         iwl_send_statistics_request(priv, CMD_ASYNC);
1659 }
1660
1661 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1662                                 struct iwl_rx_mem_buffer *rxb)
1663 {
1664 #ifdef CONFIG_IWLWIFI_DEBUG
1665         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1666         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1667         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1668
1669         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1670                 "tsf %d %d rate %d\n",
1671                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1672                 beacon->beacon_notify_hdr.failure_frame,
1673                 le32_to_cpu(beacon->ibss_mgr_status),
1674                 le32_to_cpu(beacon->high_tsf),
1675                 le32_to_cpu(beacon->low_tsf), rate);
1676 #endif
1677
1678         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1679             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1680                 queue_work(priv->workqueue, &priv->beacon_update);
1681 }
1682
1683 /* Service response to REPLY_SCAN_CMD (0x80) */
1684 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
1685                               struct iwl_rx_mem_buffer *rxb)
1686 {
1687 #ifdef CONFIG_IWLWIFI_DEBUG
1688         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1689         struct iwl4965_scanreq_notification *notif =
1690             (struct iwl4965_scanreq_notification *)pkt->u.raw;
1691
1692         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1693 #endif
1694 }
1695
1696 /* Service SCAN_START_NOTIFICATION (0x82) */
1697 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
1698                                     struct iwl_rx_mem_buffer *rxb)
1699 {
1700         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1701         struct iwl4965_scanstart_notification *notif =
1702             (struct iwl4965_scanstart_notification *)pkt->u.raw;
1703         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1704         IWL_DEBUG_SCAN("Scan start: "
1705                        "%d [802.11%s] "
1706                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1707                        notif->channel,
1708                        notif->band ? "bg" : "a",
1709                        notif->tsf_high,
1710                        notif->tsf_low, notif->status, notif->beacon_timer);
1711 }
1712
1713 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1714 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
1715                                       struct iwl_rx_mem_buffer *rxb)
1716 {
1717         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1718         struct iwl4965_scanresults_notification *notif =
1719             (struct iwl4965_scanresults_notification *)pkt->u.raw;
1720
1721         IWL_DEBUG_SCAN("Scan ch.res: "
1722                        "%d [802.11%s] "
1723                        "(TSF: 0x%08X:%08X) - %d "
1724                        "elapsed=%lu usec (%dms since last)\n",
1725                        notif->channel,
1726                        notif->band ? "bg" : "a",
1727                        le32_to_cpu(notif->tsf_high),
1728                        le32_to_cpu(notif->tsf_low),
1729                        le32_to_cpu(notif->statistics[0]),
1730                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1731                        jiffies_to_msecs(elapsed_jiffies
1732                                         (priv->last_scan_jiffies, jiffies)));
1733
1734         priv->last_scan_jiffies = jiffies;
1735         priv->next_scan_jiffies = 0;
1736 }
1737
1738 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1739 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
1740                                        struct iwl_rx_mem_buffer *rxb)
1741 {
1742         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1743         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1744
1745         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1746                        scan_notif->scanned_channels,
1747                        scan_notif->tsf_low,
1748                        scan_notif->tsf_high, scan_notif->status);
1749
1750         /* The HW is no longer scanning */
1751         clear_bit(STATUS_SCAN_HW, &priv->status);
1752
1753         /* The scan completion notification came in, so kill that timer... */
1754         cancel_delayed_work(&priv->scan_check);
1755
1756         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1757                        (priv->scan_bands == 2) ? "2.4" : "5.2",
1758                        jiffies_to_msecs(elapsed_jiffies
1759                                         (priv->scan_pass_start, jiffies)));
1760
1761         /* Remove this scanned band from the list
1762          * of pending bands to scan */
1763         priv->scan_bands--;
1764
1765         /* If a request to abort was given, or the scan did not succeed
1766          * then we reset the scan state machine and terminate,
1767          * re-queuing another scan if one has been requested */
1768         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1769                 IWL_DEBUG_INFO("Aborted scan completed.\n");
1770                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1771         } else {
1772                 /* If there are more bands on this scan pass reschedule */
1773                 if (priv->scan_bands > 0)
1774                         goto reschedule;
1775         }
1776
1777         priv->last_scan_jiffies = jiffies;
1778         priv->next_scan_jiffies = 0;
1779         IWL_DEBUG_INFO("Setting scan to off\n");
1780
1781         clear_bit(STATUS_SCANNING, &priv->status);
1782
1783         IWL_DEBUG_INFO("Scan took %dms\n",
1784                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1785
1786         queue_work(priv->workqueue, &priv->scan_completed);
1787
1788         return;
1789
1790 reschedule:
1791         priv->scan_pass_start = jiffies;
1792         queue_work(priv->workqueue, &priv->request_scan);
1793 }
1794
1795 /* Handle notification from uCode that card's power state is changing
1796  * due to software, hardware, or critical temperature RFKILL */
1797 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1798                                     struct iwl_rx_mem_buffer *rxb)
1799 {
1800         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1801         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1802         unsigned long status = priv->status;
1803
1804         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1805                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1806                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1807
1808         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1809                      RF_CARD_DISABLED)) {
1810
1811                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1812                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1813
1814                 if (!iwl_grab_nic_access(priv)) {
1815                         iwl_write_direct32(
1816                                 priv, HBUS_TARG_MBX_C,
1817                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1818
1819                         iwl_release_nic_access(priv);
1820                 }
1821
1822                 if (!(flags & RXON_CARD_DISABLED)) {
1823                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1824                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1825                         if (!iwl_grab_nic_access(priv)) {
1826                                 iwl_write_direct32(
1827                                         priv, HBUS_TARG_MBX_C,
1828                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1829
1830                                 iwl_release_nic_access(priv);
1831                         }
1832                 }
1833
1834                 if (flags & RF_CARD_DISABLED) {
1835                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1836                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1837                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1838                         if (!iwl_grab_nic_access(priv))
1839                                 iwl_release_nic_access(priv);
1840                 }
1841         }
1842
1843         if (flags & HW_CARD_DISABLED)
1844                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1845         else
1846                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1847
1848
1849         if (flags & SW_CARD_DISABLED)
1850                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1851         else
1852                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1853
1854         if (!(flags & RXON_CARD_DISABLED))
1855                 iwl4965_scan_cancel(priv);
1856
1857         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1858              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1859             (test_bit(STATUS_RF_KILL_SW, &status) !=
1860              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1861                 queue_work(priv->workqueue, &priv->rf_kill);
1862         else
1863                 wake_up_interruptible(&priv->wait_command_queue);
1864 }
1865
1866 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1867  * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1868 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1869                                     struct iwl_rx_mem_buffer *rxb)
1870 {
1871         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1872         priv->last_phy_res[0] = 1;
1873         memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1874                sizeof(struct iwl4965_rx_phy_res));
1875 }
1876
1877 /**
1878  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1879  *
1880  * Setup the RX handlers for each of the reply types sent from the uCode
1881  * to the host.
1882  *
1883  * This function chains into the hardware specific files for them to setup
1884  * any hardware specific handlers as well.
1885  */
1886 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1887 {
1888         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1889         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1890         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1891         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1892             iwl4965_rx_spectrum_measure_notif;
1893         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1894         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1895             iwl4965_rx_pm_debug_statistics_notif;
1896         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1897
1898         /*
1899          * The same handler is used for both the REPLY to a discrete
1900          * statistics request from the host as well as for the periodic
1901          * statistics notifications (after received beacons) from the uCode.
1902          */
1903         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1904         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1905         /* scan handlers */
1906         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
1907         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
1908         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1909             iwl4965_rx_scan_results_notif;
1910         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1911             iwl4965_rx_scan_complete_notif;
1912         /* status change handler */
1913         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1914
1915         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1916             iwl_rx_missed_beacon_notif;
1917         /* Rx handlers */
1918         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1919         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
1920         /* Set up hardware specific Rx handlers */
1921         priv->cfg->ops->lib->rx_handler_setup(priv);
1922 }
1923
1924 /*
1925  * this should be called while priv->lock is locked
1926 */
1927 static void __iwl_rx_replenish(struct iwl_priv *priv)
1928 {
1929         iwl_rx_allocate(priv);
1930         iwl_rx_queue_restock(priv);
1931 }
1932
1933
1934 /**
1935  * iwl_rx_handle - Main entry function for receiving responses from uCode
1936  *
1937  * Uses the priv->rx_handlers callback function array to invoke
1938  * the appropriate handlers, including command responses,
1939  * frame-received notifications, and other notifications.
1940  */
1941 void iwl_rx_handle(struct iwl_priv *priv)
1942 {
1943         struct iwl_rx_mem_buffer *rxb;
1944         struct iwl_rx_packet *pkt;
1945         struct iwl_rx_queue *rxq = &priv->rxq;
1946         u32 r, i;
1947         int reclaim;
1948         unsigned long flags;
1949         u8 fill_rx = 0;
1950         u32 count = 8;
1951
1952         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1953          * buffer that the driver may process (last buffer filled by ucode). */
1954         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1955         i = rxq->read;
1956
1957         /* Rx interrupt, but nothing sent from uCode */
1958         if (i == r)
1959                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1960
1961         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1962                 fill_rx = 1;
1963
1964         while (i != r) {
1965                 rxb = rxq->queue[i];
1966
1967                 /* If an RXB doesn't have a Rx queue slot associated with it,
1968                  * then a bug has been introduced in the queue refilling
1969                  * routines -- catch it here */
1970                 BUG_ON(rxb == NULL);
1971
1972                 rxq->queue[i] = NULL;
1973
1974                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1975                                             priv->hw_params.rx_buf_size,
1976                                             PCI_DMA_FROMDEVICE);
1977                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1978
1979                 /* Reclaim a command buffer only if this packet is a response
1980                  *   to a (driver-originated) command.
1981                  * If the packet (e.g. Rx frame) originated from uCode,
1982                  *   there is no command buffer to reclaim.
1983                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1984                  *   but apparently a few don't get set; catch them here. */
1985                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1986                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1987                         (pkt->hdr.cmd != REPLY_RX) &&
1988                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1989                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1990                         (pkt->hdr.cmd != REPLY_TX);
1991
1992                 /* Based on type of command response or notification,
1993                  *   handle those that need handling via function in
1994                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1995                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1996                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1997                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1998                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1999                 } else {
2000                         /* No handling needed */
2001                         IWL_DEBUG(IWL_DL_RX,
2002                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2003                                 r, i, get_cmd_string(pkt->hdr.cmd),
2004                                 pkt->hdr.cmd);
2005                 }
2006
2007                 if (reclaim) {
2008                         /* Invoke any callbacks, transfer the skb to caller, and
2009                          * fire off the (possibly) blocking iwl_send_cmd()
2010                          * as we reclaim the driver command queue */
2011                         if (rxb && rxb->skb)
2012                                 iwl_tx_cmd_complete(priv, rxb);
2013                         else
2014                                 IWL_WARNING("Claim null rxb?\n");
2015                 }
2016
2017                 /* For now we just don't re-use anything.  We can tweak this
2018                  * later to try and re-use notification packets and SKBs that
2019                  * fail to Rx correctly */
2020                 if (rxb->skb != NULL) {
2021                         priv->alloc_rxb_skb--;
2022                         dev_kfree_skb_any(rxb->skb);
2023                         rxb->skb = NULL;
2024                 }
2025
2026                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2027                                  priv->hw_params.rx_buf_size,
2028                                  PCI_DMA_FROMDEVICE);
2029                 spin_lock_irqsave(&rxq->lock, flags);
2030                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2031                 spin_unlock_irqrestore(&rxq->lock, flags);
2032                 i = (i + 1) & RX_QUEUE_MASK;
2033                 /* If there are a lot of unused frames,
2034                  * restock the Rx queue so ucode wont assert. */
2035                 if (fill_rx) {
2036                         count++;
2037                         if (count >= 8) {
2038                                 priv->rxq.read = i;
2039                                 __iwl_rx_replenish(priv);
2040                                 count = 0;
2041                         }
2042                 }
2043         }
2044
2045         /* Backtrack one entry */
2046         priv->rxq.read = i;
2047         iwl_rx_queue_restock(priv);
2048 }
2049 /* Convert linear signal-to-noise ratio into dB */
2050 static u8 ratio2dB[100] = {
2051 /*       0   1   2   3   4   5   6   7   8   9 */
2052          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2053         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2054         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2055         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2056         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2057         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2058         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2059         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2060         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2061         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2062 };
2063
2064 /* Calculates a relative dB value from a ratio of linear
2065  *   (i.e. not dB) signal levels.
2066  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2067 int iwl4965_calc_db_from_ratio(int sig_ratio)
2068 {
2069         /* 1000:1 or higher just report as 60 dB */
2070         if (sig_ratio >= 1000)
2071                 return 60;
2072
2073         /* 100:1 or higher, divide by 10 and use table,
2074          *   add 20 dB to make up for divide by 10 */
2075         if (sig_ratio >= 100)
2076                 return (20 + (int)ratio2dB[sig_ratio/10]);
2077
2078         /* We shouldn't see this */
2079         if (sig_ratio < 1)
2080                 return 0;
2081
2082         /* Use table for ratios 1:1 - 99:1 */
2083         return (int)ratio2dB[sig_ratio];
2084 }
2085
2086 #define PERFECT_RSSI (-20) /* dBm */
2087 #define WORST_RSSI (-95)   /* dBm */
2088 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2089
2090 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2091  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2092  *   about formulas used below. */
2093 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2094 {
2095         int sig_qual;
2096         int degradation = PERFECT_RSSI - rssi_dbm;
2097
2098         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2099          * as indicator; formula is (signal dbm - noise dbm).
2100          * SNR at or above 40 is a great signal (100%).
2101          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2102          * Weakest usable signal is usually 10 - 15 dB SNR. */
2103         if (noise_dbm) {
2104                 if (rssi_dbm - noise_dbm >= 40)
2105                         return 100;
2106                 else if (rssi_dbm < noise_dbm)
2107                         return 0;
2108                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2109
2110         /* Else use just the signal level.
2111          * This formula is a least squares fit of data points collected and
2112          *   compared with a reference system that had a percentage (%) display
2113          *   for signal quality. */
2114         } else
2115                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2116                             (15 * RSSI_RANGE + 62 * degradation)) /
2117                            (RSSI_RANGE * RSSI_RANGE);
2118
2119         if (sig_qual > 100)
2120                 sig_qual = 100;
2121         else if (sig_qual < 1)
2122                 sig_qual = 0;
2123
2124         return sig_qual;
2125 }
2126
2127 #ifdef CONFIG_IWLWIFI_DEBUG
2128 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2129 {
2130         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2131         DECLARE_MAC_BUF(mac);
2132
2133         IWL_DEBUG_RADIO("RX CONFIG:\n");
2134         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2135         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2136         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2137         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2138                         le32_to_cpu(rxon->filter_flags));
2139         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2140         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2141                         rxon->ofdm_basic_rates);
2142         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2143         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2144                         print_mac(mac, rxon->node_addr));
2145         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2146                         print_mac(mac, rxon->bssid_addr));
2147         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2148 }
2149 #endif
2150
2151 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2152 {
2153         IWL_DEBUG_ISR("Enabling interrupts\n");
2154         set_bit(STATUS_INT_ENABLED, &priv->status);
2155         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2156 }
2157
2158 /* call this function to flush any scheduled tasklet */
2159 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2160 {
2161         /* wait to make sure we flush pedding tasklet*/
2162         synchronize_irq(priv->pci_dev->irq);
2163         tasklet_kill(&priv->irq_tasklet);
2164 }
2165
2166 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2167 {
2168         clear_bit(STATUS_INT_ENABLED, &priv->status);
2169
2170         /* disable interrupts from uCode/NIC to host */
2171         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2172
2173         /* acknowledge/clear/reset any interrupts still pending
2174          * from uCode or flow handler (Rx/Tx DMA) */
2175         iwl_write32(priv, CSR_INT, 0xffffffff);
2176         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2177         IWL_DEBUG_ISR("Disabled interrupts\n");
2178 }
2179
2180
2181 /**
2182  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2183  */
2184 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2185 {
2186         /* Set the FW error flag -- cleared on iwl4965_down */
2187         set_bit(STATUS_FW_ERROR, &priv->status);
2188
2189         /* Cancel currently queued command. */
2190         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2191
2192 #ifdef CONFIG_IWLWIFI_DEBUG
2193         if (priv->debug_level & IWL_DL_FW_ERRORS) {
2194                 iwl_dump_nic_error_log(priv);
2195                 iwl_dump_nic_event_log(priv);
2196                 iwl4965_print_rx_config_cmd(priv);
2197         }
2198 #endif
2199
2200         wake_up_interruptible(&priv->wait_command_queue);
2201
2202         /* Keep the restart process from trying to send host
2203          * commands by clearing the INIT status bit */
2204         clear_bit(STATUS_READY, &priv->status);
2205
2206         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2207                 IWL_DEBUG(IWL_DL_FW_ERRORS,
2208                           "Restarting adapter due to uCode error.\n");
2209
2210                 if (iwl_is_associated(priv)) {
2211                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
2212                                sizeof(priv->recovery_rxon));
2213                         priv->error_recovering = 1;
2214                 }
2215                 if (priv->cfg->mod_params->restart_fw)
2216                         queue_work(priv->workqueue, &priv->restart);
2217         }
2218 }
2219
2220 static void iwl4965_error_recovery(struct iwl_priv *priv)
2221 {
2222         unsigned long flags;
2223
2224         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2225                sizeof(priv->staging_rxon));
2226         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2227         iwl4965_commit_rxon(priv);
2228
2229         iwl_rxon_add_station(priv, priv->bssid, 1);
2230
2231         spin_lock_irqsave(&priv->lock, flags);
2232         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2233         priv->error_recovering = 0;
2234         spin_unlock_irqrestore(&priv->lock, flags);
2235 }
2236
2237 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2238 {
2239         u32 inta, handled = 0;
2240         u32 inta_fh;
2241         unsigned long flags;
2242 #ifdef CONFIG_IWLWIFI_DEBUG
2243         u32 inta_mask;
2244 #endif
2245
2246         spin_lock_irqsave(&priv->lock, flags);
2247
2248         /* Ack/clear/reset pending uCode interrupts.
2249          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2250          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2251         inta = iwl_read32(priv, CSR_INT);
2252         iwl_write32(priv, CSR_INT, inta);
2253
2254         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2255          * Any new interrupts that happen after this, either while we're
2256          * in this tasklet, or later, will show up in next ISR/tasklet. */
2257         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2258         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2259
2260 #ifdef CONFIG_IWLWIFI_DEBUG
2261         if (priv->debug_level & IWL_DL_ISR) {
2262                 /* just for debug */
2263                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2264                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2265                               inta, inta_mask, inta_fh);
2266         }
2267 #endif
2268
2269         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2270          * atomic, make sure that inta covers all the interrupts that
2271          * we've discovered, even if FH interrupt came in just after
2272          * reading CSR_INT. */
2273         if (inta_fh & CSR49_FH_INT_RX_MASK)
2274                 inta |= CSR_INT_BIT_FH_RX;
2275         if (inta_fh & CSR49_FH_INT_TX_MASK)
2276                 inta |= CSR_INT_BIT_FH_TX;
2277
2278         /* Now service all interrupt bits discovered above. */
2279         if (inta & CSR_INT_BIT_HW_ERR) {
2280                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
2281
2282                 /* Tell the device to stop sending interrupts */
2283                 iwl4965_disable_interrupts(priv);
2284
2285                 iwl4965_irq_handle_error(priv);
2286
2287                 handled |= CSR_INT_BIT_HW_ERR;
2288
2289                 spin_unlock_irqrestore(&priv->lock, flags);
2290
2291                 return;
2292         }
2293
2294 #ifdef CONFIG_IWLWIFI_DEBUG
2295         if (priv->debug_level & (IWL_DL_ISR)) {
2296                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2297                 if (inta & CSR_INT_BIT_SCD)
2298                         IWL_DEBUG_ISR("Scheduler finished to transmit "
2299                                       "the frame/frames.\n");
2300
2301                 /* Alive notification via Rx interrupt will do the real work */
2302                 if (inta & CSR_INT_BIT_ALIVE)
2303                         IWL_DEBUG_ISR("Alive interrupt\n");
2304         }
2305 #endif
2306         /* Safely ignore these bits for debug checks below */
2307         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2308
2309         /* HW RF KILL switch toggled */
2310         if (inta & CSR_INT_BIT_RF_KILL) {
2311                 int hw_rf_kill = 0;
2312                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2313                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2314                         hw_rf_kill = 1;
2315
2316                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2317                                 hw_rf_kill ? "disable radio":"enable radio");
2318
2319                 /* Queue restart only if RF_KILL switch was set to "kill"
2320                  *   when we loaded driver, and is now set to "enable".
2321                  * After we're Alive, RF_KILL gets handled by
2322                  *   iwl4965_rx_card_state_notif() */
2323                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2324                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2325                         queue_work(priv->workqueue, &priv->restart);
2326                 }
2327
2328                 handled |= CSR_INT_BIT_RF_KILL;
2329         }
2330
2331         /* Chip got too hot and stopped itself */
2332         if (inta & CSR_INT_BIT_CT_KILL) {
2333                 IWL_ERROR("Microcode CT kill error detected.\n");
2334                 handled |= CSR_INT_BIT_CT_KILL;
2335         }
2336
2337         /* Error detected by uCode */
2338         if (inta & CSR_INT_BIT_SW_ERR) {
2339                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
2340                           inta);
2341                 iwl4965_irq_handle_error(priv);
2342                 handled |= CSR_INT_BIT_SW_ERR;
2343         }
2344
2345         /* uCode wakes up after power-down sleep */
2346         if (inta & CSR_INT_BIT_WAKEUP) {
2347                 IWL_DEBUG_ISR("Wakeup interrupt\n");
2348                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2349                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2350                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2351                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2352                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2353                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2354                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2355
2356                 handled |= CSR_INT_BIT_WAKEUP;
2357         }
2358
2359         /* All uCode command responses, including Tx command responses,
2360          * Rx "responses" (frame-received notification), and other
2361          * notifications from uCode come through here*/
2362         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2363                 iwl_rx_handle(priv);
2364                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2365         }
2366
2367         if (inta & CSR_INT_BIT_FH_TX) {
2368                 IWL_DEBUG_ISR("Tx interrupt\n");
2369                 handled |= CSR_INT_BIT_FH_TX;
2370                 /* FH finished to write, send event */
2371                 priv->ucode_write_complete = 1;
2372                 wake_up_interruptible(&priv->wait_command_queue);
2373         }
2374
2375         if (inta & ~handled)
2376                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2377
2378         if (inta & ~CSR_INI_SET_MASK) {
2379                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2380                          inta & ~CSR_INI_SET_MASK);
2381                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
2382         }
2383
2384         /* Re-enable all interrupts */
2385         /* only Re-enable if diabled by irq */
2386         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2387                 iwl4965_enable_interrupts(priv);
2388
2389 #ifdef CONFIG_IWLWIFI_DEBUG
2390         if (priv->debug_level & (IWL_DL_ISR)) {
2391                 inta = iwl_read32(priv, CSR_INT);
2392                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2393                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2394                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2395                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2396         }
2397 #endif
2398         spin_unlock_irqrestore(&priv->lock, flags);
2399 }
2400
2401 static irqreturn_t iwl4965_isr(int irq, void *data)
2402 {
2403         struct iwl_priv *priv = data;
2404         u32 inta, inta_mask;
2405         u32 inta_fh;
2406         if (!priv)
2407                 return IRQ_NONE;
2408
2409         spin_lock(&priv->lock);
2410
2411         /* Disable (but don't clear!) interrupts here to avoid
2412          *    back-to-back ISRs and sporadic interrupts from our NIC.
2413          * If we have something to service, the tasklet will re-enable ints.
2414          * If we *don't* have something, we'll re-enable before leaving here. */
2415         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2416         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2417
2418         /* Discover which interrupts are active/pending */
2419         inta = iwl_read32(priv, CSR_INT);
2420         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2421
2422         /* Ignore interrupt if there's nothing in NIC to service.
2423          * This may be due to IRQ shared with another device,
2424          * or due to sporadic interrupts thrown from our NIC. */
2425         if (!inta && !inta_fh) {
2426                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2427                 goto none;
2428         }
2429
2430         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2431                 /* Hardware disappeared. It might have already raised
2432                  * an interrupt */
2433                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2434                 goto unplugged;
2435         }
2436
2437         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2438                       inta, inta_mask, inta_fh);
2439
2440         inta &= ~CSR_INT_BIT_SCD;
2441
2442         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2443         if (likely(inta || inta_fh))
2444                 tasklet_schedule(&priv->irq_tasklet);
2445
2446  unplugged:
2447         spin_unlock(&priv->lock);
2448         return IRQ_HANDLED;
2449
2450  none:
2451         /* re-enable interrupts here since we don't have anything to service. */
2452         /* only Re-enable if diabled by irq */
2453         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2454                 iwl4965_enable_interrupts(priv);
2455         spin_unlock(&priv->lock);
2456         return IRQ_NONE;
2457 }
2458
2459 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2460  * sending probe req.  This should be set long enough to hear probe responses
2461  * from more than one AP.  */
2462 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
2463 #define IWL_ACTIVE_DWELL_TIME_52    (10)
2464
2465 /* For faster active scanning, scan will move to the next channel if fewer than
2466  * PLCP_QUIET_THRESH packets are heard on this channel within
2467  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
2468  * time if it's a quiet channel (nothing responded to our probe, and there's
2469  * no other traffic).
2470  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2471 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
2472 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
2473
2474 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2475  * Must be set longer than active dwell time.
2476  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2477 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
2478 #define IWL_PASSIVE_DWELL_TIME_52   (10)
2479 #define IWL_PASSIVE_DWELL_BASE      (100)
2480 #define IWL_CHANNEL_TUNE_TIME       5
2481
2482 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2483                                                 enum ieee80211_band band)
2484 {
2485         if (band == IEEE80211_BAND_5GHZ)
2486                 return IWL_ACTIVE_DWELL_TIME_52;
2487         else
2488                 return IWL_ACTIVE_DWELL_TIME_24;
2489 }
2490
2491 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2492                                           enum ieee80211_band band)
2493 {
2494         u16 active = iwl4965_get_active_dwell_time(priv, band);
2495         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2496             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2497             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2498
2499         if (iwl_is_associated(priv)) {
2500                 /* If we're associated, we clamp the maximum passive
2501                  * dwell time to be 98% of the beacon interval (minus
2502                  * 2 * channel tune time) */
2503                 passive = priv->beacon_int;
2504                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2505                         passive = IWL_PASSIVE_DWELL_BASE;
2506                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2507         }
2508
2509         if (passive <= active)
2510                 passive = active + 1;
2511
2512         return passive;
2513 }
2514
2515 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2516                                          enum ieee80211_band band,
2517                                      u8 is_active, u8 direct_mask,
2518                                      struct iwl4965_scan_channel *scan_ch)
2519 {
2520         const struct ieee80211_channel *channels = NULL;
2521         const struct ieee80211_supported_band *sband;
2522         const struct iwl_channel_info *ch_info;
2523         u16 passive_dwell = 0;
2524         u16 active_dwell = 0;
2525         int added, i;
2526
2527         sband = iwl_get_hw_mode(priv, band);
2528         if (!sband)
2529                 return 0;
2530
2531         channels = sband->channels;
2532
2533         active_dwell = iwl4965_get_active_dwell_time(priv, band);
2534         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2535
2536         for (i = 0, added = 0; i < sband->n_channels; i++) {
2537                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2538                         continue;
2539
2540                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2541
2542                 ch_info = iwl_get_channel_info(priv, band,
2543                                          scan_ch->channel);
2544                 if (!is_channel_valid(ch_info)) {
2545                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2546                                        scan_ch->channel);
2547                         continue;
2548                 }
2549
2550                 if (!is_active || is_channel_passive(ch_info) ||
2551                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2552                         scan_ch->type = 0;      /* passive */
2553                 else
2554                         scan_ch->type = 1;      /* active */
2555
2556                 if (scan_ch->type & 1)
2557                         scan_ch->type |= (direct_mask << 1);
2558
2559                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2560                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2561
2562                 /* Set txpower levels to defaults */
2563                 scan_ch->tpc.dsp_atten = 110;
2564                 /* scan_pwr_info->tpc.dsp_atten; */
2565
2566                 /*scan_pwr_info->tpc.tx_gain; */
2567                 if (band == IEEE80211_BAND_5GHZ)
2568                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2569                 else {
2570                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2571                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2572                          * power level:
2573                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2574                          */
2575                 }
2576
2577                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2578                                scan_ch->channel,
2579                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2580                                (scan_ch->type & 1) ?
2581                                active_dwell : passive_dwell);
2582
2583                 scan_ch++;
2584                 added++;
2585         }
2586
2587         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2588         return added;
2589 }
2590
2591 /******************************************************************************
2592  *
2593  * uCode download functions
2594  *
2595  ******************************************************************************/
2596
2597 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2598 {
2599         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2600         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2601         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2602         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2603         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2604         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2605 }
2606
2607 static void iwl4965_nic_start(struct iwl_priv *priv)
2608 {
2609         /* Remove all resets to allow NIC to operate */
2610         iwl_write32(priv, CSR_RESET, 0);
2611 }
2612
2613
2614 /**
2615  * iwl4965_read_ucode - Read uCode images from disk file.
2616  *
2617  * Copy into buffers for card to fetch via bus-mastering
2618  */
2619 static int iwl4965_read_ucode(struct iwl_priv *priv)
2620 {
2621         struct iwl4965_ucode *ucode;
2622         int ret;
2623         const struct firmware *ucode_raw;
2624         const char *name = priv->cfg->fw_name;
2625         u8 *src;
2626         size_t len;
2627         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2628
2629         /* Ask kernel firmware_class module to get the boot firmware off disk.
2630          * request_firmware() is synchronous, file is in memory on return. */
2631         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2632         if (ret < 0) {
2633                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2634                                         name, ret);
2635                 goto error;
2636         }
2637
2638         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2639                        name, ucode_raw->size);
2640
2641         /* Make sure that we got at least our header! */
2642         if (ucode_raw->size < sizeof(*ucode)) {
2643                 IWL_ERROR("File size way too small!\n");
2644                 ret = -EINVAL;
2645                 goto err_release;
2646         }
2647
2648         /* Data from ucode file:  header followed by uCode images */
2649         ucode = (void *)ucode_raw->data;
2650
2651         ver = le32_to_cpu(ucode->ver);
2652         inst_size = le32_to_cpu(ucode->inst_size);
2653         data_size = le32_to_cpu(ucode->data_size);
2654         init_size = le32_to_cpu(ucode->init_size);
2655         init_data_size = le32_to_cpu(ucode->init_data_size);
2656         boot_size = le32_to_cpu(ucode->boot_size);
2657
2658         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2659         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2660                        inst_size);
2661         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2662                        data_size);
2663         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2664                        init_size);
2665         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2666                        init_data_size);
2667         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2668                        boot_size);
2669
2670         /* Verify size of file vs. image size info in file's header */
2671         if (ucode_raw->size < sizeof(*ucode) +
2672                 inst_size + data_size + init_size +
2673                 init_data_size + boot_size) {
2674
2675                 IWL_DEBUG_INFO("uCode file size %d too small\n",
2676                                (int)ucode_raw->size);
2677                 ret = -EINVAL;
2678                 goto err_release;
2679         }
2680
2681         /* Verify that uCode images will fit in card's SRAM */
2682         if (inst_size > priv->hw_params.max_inst_size) {
2683                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2684                                inst_size);
2685                 ret = -EINVAL;
2686                 goto err_release;
2687         }
2688
2689         if (data_size > priv->hw_params.max_data_size) {
2690                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2691                                 data_size);
2692                 ret = -EINVAL;
2693                 goto err_release;
2694         }
2695         if (init_size > priv->hw_params.max_inst_size) {
2696                 IWL_DEBUG_INFO
2697                     ("uCode init instr len %d too large to fit in\n",
2698                       init_size);
2699                 ret = -EINVAL;
2700                 goto err_release;
2701         }
2702         if (init_data_size > priv->hw_params.max_data_size) {
2703                 IWL_DEBUG_INFO
2704                     ("uCode init data len %d too large to fit in\n",
2705                       init_data_size);
2706                 ret = -EINVAL;
2707                 goto err_release;
2708         }
2709         if (boot_size > priv->hw_params.max_bsm_size) {
2710                 IWL_DEBUG_INFO
2711                     ("uCode boot instr len %d too large to fit in\n",
2712                       boot_size);
2713                 ret = -EINVAL;
2714                 goto err_release;
2715         }
2716
2717         /* Allocate ucode buffers for card's bus-master loading ... */
2718
2719         /* Runtime instructions and 2 copies of data:
2720          * 1) unmodified from disk
2721          * 2) backup cache for save/restore during power-downs */
2722         priv->ucode_code.len = inst_size;
2723         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2724
2725         priv->ucode_data.len = data_size;
2726         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2727
2728         priv->ucode_data_backup.len = data_size;
2729         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2730
2731         /* Initialization instructions and data */
2732         if (init_size && init_data_size) {
2733                 priv->ucode_init.len = init_size;
2734                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2735
2736                 priv->ucode_init_data.len = init_data_size;
2737                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2738
2739                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2740                         goto err_pci_alloc;
2741         }
2742
2743         /* Bootstrap (instructions only, no data) */
2744         if (boot_size) {
2745                 priv->ucode_boot.len = boot_size;
2746                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2747
2748                 if (!priv->ucode_boot.v_addr)
2749                         goto err_pci_alloc;
2750         }
2751
2752         /* Copy images into buffers for card's bus-master reads ... */
2753
2754         /* Runtime instructions (first block of data in file) */
2755         src = &ucode->data[0];
2756         len = priv->ucode_code.len;
2757         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2758         memcpy(priv->ucode_code.v_addr, src, len);
2759         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2760                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2761
2762         /* Runtime data (2nd block)
2763          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
2764         src = &ucode->data[inst_size];
2765         len = priv->ucode_data.len;
2766         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2767         memcpy(priv->ucode_data.v_addr, src, len);
2768         memcpy(priv->ucode_data_backup.v_addr, src, len);
2769
2770         /* Initialization instructions (3rd block) */
2771         if (init_size) {
2772                 src = &ucode->data[inst_size + data_size];
2773                 len = priv->ucode_init.len;
2774                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2775                                 len);
2776                 memcpy(priv->ucode_init.v_addr, src, len);
2777         }
2778
2779         /* Initialization data (4th block) */
2780         if (init_data_size) {
2781                 src = &ucode->data[inst_size + data_size + init_size];
2782                 len = priv->ucode_init_data.len;
2783                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2784                                len);
2785                 memcpy(priv->ucode_init_data.v_addr, src, len);
2786         }
2787
2788         /* Bootstrap instructions (5th block) */
2789         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2790         len = priv->ucode_boot.len;
2791         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2792         memcpy(priv->ucode_boot.v_addr, src, len);
2793
2794         /* We have our copies now, allow OS release its copies */
2795         release_firmware(ucode_raw);
2796         return 0;
2797
2798  err_pci_alloc:
2799         IWL_ERROR("failed to allocate pci memory\n");
2800         ret = -ENOMEM;
2801         iwl4965_dealloc_ucode_pci(priv);
2802
2803  err_release:
2804         release_firmware(ucode_raw);
2805
2806  error:
2807         return ret;
2808 }
2809
2810 /**
2811  * iwl_alive_start - called after REPLY_ALIVE notification received
2812  *                   from protocol/runtime uCode (initialization uCode's
2813  *                   Alive gets handled by iwl_init_alive_start()).
2814  */
2815 static void iwl_alive_start(struct iwl_priv *priv)
2816 {
2817         int ret = 0;
2818
2819         IWL_DEBUG_INFO("Runtime Alive received.\n");
2820
2821         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2822                 /* We had an error bringing up the hardware, so take it
2823                  * all the way back down so we can try again */
2824                 IWL_DEBUG_INFO("Alive failed.\n");
2825                 goto restart;
2826         }
2827
2828         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2829          * This is a paranoid check, because we would not have gotten the
2830          * "runtime" alive if code weren't properly loaded.  */
2831         if (iwl_verify_ucode(priv)) {
2832                 /* Runtime instruction load was bad;
2833                  * take it all the way back down so we can try again */
2834                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2835                 goto restart;
2836         }
2837
2838         iwlcore_clear_stations_table(priv);
2839         ret = priv->cfg->ops->lib->alive_notify(priv);
2840         if (ret) {
2841                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2842                             ret);
2843                 goto restart;
2844         }
2845
2846         /* After the ALIVE response, we can send host commands to 4965 uCode */
2847         set_bit(STATUS_ALIVE, &priv->status);
2848
2849         if (iwl_is_rfkill(priv))
2850                 return;
2851
2852         ieee80211_wake_queues(priv->hw);
2853
2854         priv->active_rate = priv->rates_mask;
2855         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2856
2857         if (iwl_is_associated(priv)) {
2858                 struct iwl_rxon_cmd *active_rxon =
2859                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2860
2861                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2862                        sizeof(priv->staging_rxon));
2863                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2864         } else {
2865                 /* Initialize our rx_config data */
2866                 iwl4965_connection_init_rx_config(priv);
2867                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2868         }
2869
2870         /* Configure Bluetooth device coexistence support */
2871         iwl4965_send_bt_config(priv);
2872
2873         iwl_reset_run_time_calib(priv);
2874
2875         /* Configure the adapter for unassociated operation */
2876         iwl4965_commit_rxon(priv);
2877
2878         /* At this point, the NIC is initialized and operational */
2879         iwl4965_rf_kill_ct_config(priv);
2880
2881         iwl_leds_register(priv);
2882
2883         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2884         set_bit(STATUS_READY, &priv->status);
2885         wake_up_interruptible(&priv->wait_command_queue);
2886
2887         if (priv->error_recovering)
2888                 iwl4965_error_recovery(priv);
2889
2890         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
2891         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2892
2893         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2894                 iwl4965_set_mode(priv, priv->iw_mode);
2895
2896         return;
2897
2898  restart:
2899         queue_work(priv->workqueue, &priv->restart);
2900 }
2901
2902 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2903
2904 static void __iwl4965_down(struct iwl_priv *priv)
2905 {
2906         unsigned long flags;
2907         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2908
2909         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2910
2911         if (!exit_pending)
2912                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2913
2914         iwl_leds_unregister(priv);
2915
2916         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2917
2918         iwlcore_clear_stations_table(priv);
2919
2920         /* Unblock any waiting calls */
2921         wake_up_interruptible_all(&priv->wait_command_queue);
2922
2923         /* Wipe out the EXIT_PENDING status bit if we are not actually
2924          * exiting the module */
2925         if (!exit_pending)
2926                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2927
2928         /* stop and reset the on-board processor */
2929         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2930
2931         /* tell the device to stop sending interrupts */
2932         spin_lock_irqsave(&priv->lock, flags);
2933         iwl4965_disable_interrupts(priv);
2934         spin_unlock_irqrestore(&priv->lock, flags);
2935         iwl_synchronize_irq(priv);
2936
2937         if (priv->mac80211_registered)
2938                 ieee80211_stop_queues(priv->hw);
2939
2940         /* If we have not previously called iwl4965_init() then
2941          * clear all bits but the RF Kill and SUSPEND bits and return */
2942         if (!iwl_is_init(priv)) {
2943                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2944                                         STATUS_RF_KILL_HW |
2945                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2946                                         STATUS_RF_KILL_SW |
2947                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2948                                         STATUS_GEO_CONFIGURED |
2949                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2950                                         STATUS_IN_SUSPEND;
2951                 goto exit;
2952         }
2953
2954         /* ...otherwise clear out all the status bits but the RF Kill and
2955          * SUSPEND bits and continue taking the NIC down. */
2956         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2957                                 STATUS_RF_KILL_HW |
2958                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2959                                 STATUS_RF_KILL_SW |
2960                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2961                                 STATUS_GEO_CONFIGURED |
2962                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2963                                 STATUS_IN_SUSPEND |
2964                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2965                                 STATUS_FW_ERROR;
2966
2967         spin_lock_irqsave(&priv->lock, flags);
2968         iwl_clear_bit(priv, CSR_GP_CNTRL,
2969                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2970         spin_unlock_irqrestore(&priv->lock, flags);
2971
2972         iwl_txq_ctx_stop(priv);
2973         iwl_rxq_stop(priv);
2974
2975         spin_lock_irqsave(&priv->lock, flags);
2976         if (!iwl_grab_nic_access(priv)) {
2977                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2978                                          APMG_CLK_VAL_DMA_CLK_RQT);
2979                 iwl_release_nic_access(priv);
2980         }
2981         spin_unlock_irqrestore(&priv->lock, flags);
2982
2983         udelay(5);
2984
2985         /* FIXME: apm_ops.suspend(priv) */
2986         priv->cfg->ops->lib->apm_ops.reset(priv);
2987         priv->cfg->ops->lib->free_shared_mem(priv);
2988
2989  exit:
2990         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2991
2992         if (priv->ibss_beacon)
2993                 dev_kfree_skb(priv->ibss_beacon);
2994         priv->ibss_beacon = NULL;
2995
2996         /* clear out any free frames */
2997         iwl_clear_free_frames(priv);
2998 }
2999
3000 static void iwl4965_down(struct iwl_priv *priv)
3001 {
3002         mutex_lock(&priv->mutex);
3003         __iwl4965_down(priv);
3004         mutex_unlock(&priv->mutex);
3005
3006         iwl_cancel_deferred_work(priv);
3007 }
3008
3009 #define MAX_HW_RESTARTS 5
3010
3011 static int __iwl4965_up(struct iwl_priv *priv)
3012 {
3013         int i;
3014         int ret;
3015
3016         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3017                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3018                 return -EIO;
3019         }
3020
3021         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3022                 IWL_ERROR("ucode not available for device bringup\n");
3023                 return -EIO;
3024         }
3025
3026         /* If platform's RF_KILL switch is NOT set to KILL */
3027         if (iwl_read32(priv, CSR_GP_CNTRL) &
3028                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3029                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3030         else {
3031                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3032                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3033                         iwl_rfkill_set_hw_state(priv);
3034                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3035                         return -ENODEV;
3036                 }
3037         }
3038
3039         iwl_rfkill_set_hw_state(priv);
3040         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3041
3042         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3043         if (ret) {
3044                 IWL_ERROR("Unable to allocate shared memory\n");
3045                 return ret;
3046         }
3047
3048         ret = iwl_hw_nic_init(priv);
3049         if (ret) {
3050                 IWL_ERROR("Unable to init nic\n");
3051                 return ret;
3052         }
3053
3054         /* make sure rfkill handshake bits are cleared */
3055         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3056         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3057                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3058
3059         /* clear (again), then enable host interrupts */
3060         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3061         iwl4965_enable_interrupts(priv);
3062
3063         /* really 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, CSR_UCODE_SW_BIT_RFKILL);
3066
3067         /* Copy original ucode data image from disk into backup cache.
3068          * This will be used to initialize the on-board processor's
3069          * data SRAM for a clean start when the runtime program first loads. */
3070         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3071                priv->ucode_data.len);
3072
3073         /* We return success when we resume from suspend and rf_kill is on. */
3074         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
3075             test_bit(STATUS_RF_KILL_SW, &priv->status))
3076                 return 0;
3077
3078         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3079
3080                 iwlcore_clear_stations_table(priv);
3081
3082                 /* load bootstrap state machine,
3083                  * load bootstrap program into processor's memory,
3084                  * prepare to load the "initialize" uCode */
3085                 ret = priv->cfg->ops->lib->load_ucode(priv);
3086
3087                 if (ret) {
3088                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3089                         continue;
3090                 }
3091
3092                 /* Clear out the uCode error bit if it is set */
3093                 clear_bit(STATUS_FW_ERROR, &priv->status);
3094
3095                 /* start card; "initialize" will load runtime ucode */
3096                 iwl4965_nic_start(priv);
3097
3098                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3099
3100                 return 0;
3101         }
3102
3103         set_bit(STATUS_EXIT_PENDING, &priv->status);
3104         __iwl4965_down(priv);
3105         clear_bit(STATUS_EXIT_PENDING, &priv->status);
3106
3107         /* tried to restart and config the device for as long as our
3108          * patience could withstand */
3109         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3110         return -EIO;
3111 }
3112
3113
3114 /*****************************************************************************
3115  *
3116  * Workqueue callbacks
3117  *
3118  *****************************************************************************/
3119
3120 static void iwl_bg_init_alive_start(struct work_struct *data)
3121 {
3122         struct iwl_priv *priv =
3123             container_of(data, struct iwl_priv, init_alive_start.work);
3124
3125         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3126                 return;
3127
3128         mutex_lock(&priv->mutex);
3129         priv->cfg->ops->lib->init_alive_start(priv);
3130         mutex_unlock(&priv->mutex);
3131 }
3132
3133 static void iwl_bg_alive_start(struct work_struct *data)
3134 {
3135         struct iwl_priv *priv =
3136             container_of(data, struct iwl_priv, alive_start.work);
3137
3138         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3139                 return;
3140
3141         mutex_lock(&priv->mutex);
3142         iwl_alive_start(priv);
3143         mutex_unlock(&priv->mutex);
3144 }
3145
3146 static void iwl4965_bg_rf_kill(struct work_struct *work)
3147 {
3148         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3149
3150         wake_up_interruptible(&priv->wait_command_queue);
3151
3152         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3153                 return;
3154
3155         mutex_lock(&priv->mutex);
3156
3157         if (!iwl_is_rfkill(priv)) {
3158                 IWL_DEBUG(IWL_DL_RF_KILL,
3159                           "HW and/or SW RF Kill no longer active, restarting "
3160                           "device\n");
3161                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3162                         queue_work(priv->workqueue, &priv->restart);
3163         } else {
3164                 /* make sure mac80211 stop sending Tx frame */
3165                 if (priv->mac80211_registered)
3166                         ieee80211_stop_queues(priv->hw);
3167
3168                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3169                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3170                                           "disabled by SW switch\n");
3171                 else
3172                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3173                                     "Kill switch must be turned off for "
3174                                     "wireless networking to work.\n");
3175         }
3176         iwl_rfkill_set_hw_state(priv);
3177
3178         mutex_unlock(&priv->mutex);
3179 }
3180
3181 static void iwl4965_bg_set_monitor(struct work_struct *work)
3182 {
3183         struct iwl_priv *priv = container_of(work,
3184                                 struct iwl_priv, set_monitor);
3185         int ret;
3186
3187         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3188
3189         mutex_lock(&priv->mutex);
3190
3191         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
3192
3193         if (ret) {
3194                 if (ret == -EAGAIN)
3195                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3196                 else
3197                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
3198         }
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 iwl_bg_run_time_calib_work(struct work_struct *work)
3441 {
3442         struct iwl_priv *priv = container_of(work, struct iwl_priv,
3443                         run_time_calib_work);
3444
3445         mutex_lock(&priv->mutex);
3446
3447         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3448             test_bit(STATUS_SCANNING, &priv->status)) {
3449                 mutex_unlock(&priv->mutex);
3450                 return;
3451         }
3452
3453         if (priv->start_calib) {
3454                 iwl_chain_noise_calibration(priv, &priv->statistics);
3455
3456                 iwl_sensitivity_calibration(priv, &priv->statistics);
3457         }
3458
3459         mutex_unlock(&priv->mutex);
3460         return;
3461 }
3462
3463 static void iwl4965_bg_up(struct work_struct *data)
3464 {
3465         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3466
3467         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3468                 return;
3469
3470         mutex_lock(&priv->mutex);
3471         __iwl4965_up(priv);
3472         mutex_unlock(&priv->mutex);
3473 }
3474
3475 static void iwl4965_bg_restart(struct work_struct *data)
3476 {
3477         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3478
3479         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3480                 return;
3481
3482         iwl4965_down(priv);
3483         queue_work(priv->workqueue, &priv->up);
3484 }
3485
3486 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3487 {
3488         struct iwl_priv *priv =
3489             container_of(data, struct iwl_priv, rx_replenish);
3490
3491         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3492                 return;
3493
3494         mutex_lock(&priv->mutex);
3495         iwl_rx_replenish(priv);
3496         mutex_unlock(&priv->mutex);
3497 }
3498
3499 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3500
3501 static void iwl4965_post_associate(struct iwl_priv *priv)
3502 {
3503         struct ieee80211_conf *conf = NULL;
3504         int ret = 0;
3505         DECLARE_MAC_BUF(mac);
3506
3507         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3508                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3509                 return;
3510         }
3511
3512         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3513                         priv->assoc_id,
3514                         print_mac(mac, priv->active_rxon.bssid_addr));
3515
3516
3517         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3518                 return;
3519
3520
3521         if (!priv->vif || !priv->is_open)
3522                 return;
3523
3524         iwl4965_scan_cancel_timeout(priv, 200);
3525
3526         conf = ieee80211_get_hw_conf(priv->hw);
3527
3528         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3529         iwl4965_commit_rxon(priv);
3530
3531         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3532         iwl4965_setup_rxon_timing(priv);
3533         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3534                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3535         if (ret)
3536                 IWL_WARNING("REPLY_RXON_TIMING failed - "
3537                             "Attempting to continue.\n");
3538
3539         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3540
3541         if (priv->current_ht_config.is_ht)
3542                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3543
3544         iwl_set_rxon_chain(priv);
3545         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3546
3547         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3548                         priv->assoc_id, priv->beacon_int);
3549
3550         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3551                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3552         else
3553                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3554
3555         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3556                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3557                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3558                 else
3559                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3560
3561                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3562                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3563
3564         }
3565
3566         iwl4965_commit_rxon(priv);
3567
3568         switch (priv->iw_mode) {
3569         case IEEE80211_IF_TYPE_STA:
3570                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3571                 break;
3572
3573         case IEEE80211_IF_TYPE_IBSS:
3574
3575                 /* assume default assoc id */
3576                 priv->assoc_id = 1;
3577
3578                 iwl_rxon_add_station(priv, priv->bssid, 0);
3579                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3580                 iwl4965_send_beacon_cmd(priv);
3581
3582                 break;
3583
3584         default:
3585                 IWL_ERROR("%s Should not be called in %d mode\n",
3586                                 __FUNCTION__, priv->iw_mode);
3587                 break;
3588         }
3589
3590         iwl4965_sequence_reset(priv);
3591
3592         /* Enable Rx differential gain and sensitivity calibrations */
3593         iwl_chain_noise_reset(priv);
3594         priv->start_calib = 1;
3595
3596         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3597                 priv->assoc_station_added = 1;
3598
3599         iwl4965_activate_qos(priv, 0);
3600
3601         iwl_power_update_mode(priv, 0);
3602         /* we have just associated, don't start scan too early */
3603         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3604 }
3605
3606
3607 static void iwl4965_bg_post_associate(struct work_struct *data)
3608 {
3609         struct iwl_priv *priv = container_of(data, struct iwl_priv,
3610                                              post_associate.work);
3611
3612         mutex_lock(&priv->mutex);
3613         iwl4965_post_associate(priv);
3614         mutex_unlock(&priv->mutex);
3615
3616 }
3617
3618 static void iwl4965_bg_abort_scan(struct work_struct *work)
3619 {
3620         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3621
3622         if (!iwl_is_ready(priv))
3623                 return;
3624
3625         mutex_lock(&priv->mutex);
3626
3627         set_bit(STATUS_SCAN_ABORTING, &priv->status);
3628         iwl4965_send_scan_abort(priv);
3629
3630         mutex_unlock(&priv->mutex);
3631 }
3632
3633 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3634
3635 static void iwl4965_bg_scan_completed(struct work_struct *work)
3636 {
3637         struct iwl_priv *priv =
3638             container_of(work, struct iwl_priv, scan_completed);
3639
3640         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
3641
3642         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3643                 return;
3644
3645         if (test_bit(STATUS_CONF_PENDING, &priv->status))
3646                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
3647
3648         ieee80211_scan_completed(priv->hw);
3649
3650         /* Since setting the TXPOWER may have been deferred while
3651          * performing the scan, fire one off */
3652         mutex_lock(&priv->mutex);
3653         iwl4965_hw_reg_send_txpower(priv);
3654         mutex_unlock(&priv->mutex);
3655 }
3656
3657 /*****************************************************************************
3658  *
3659  * mac80211 entry point functions
3660  *
3661  *****************************************************************************/
3662
3663 #define UCODE_READY_TIMEOUT     (2 * HZ)
3664
3665 static int iwl4965_mac_start(struct ieee80211_hw *hw)
3666 {
3667         struct iwl_priv *priv = hw->priv;
3668         int ret;
3669
3670         IWL_DEBUG_MAC80211("enter\n");
3671
3672         if (pci_enable_device(priv->pci_dev)) {
3673                 IWL_ERROR("Fail to pci_enable_device\n");
3674                 return -ENODEV;
3675         }
3676         pci_restore_state(priv->pci_dev);
3677         pci_enable_msi(priv->pci_dev);
3678
3679         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
3680                           DRV_NAME, priv);
3681         if (ret) {
3682                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
3683                 goto out_disable_msi;
3684         }
3685
3686         /* we should be verifying the device is ready to be opened */
3687         mutex_lock(&priv->mutex);
3688
3689         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
3690         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3691          * ucode filename and max sizes are card-specific. */
3692
3693         if (!priv->ucode_code.len) {
3694                 ret = iwl4965_read_ucode(priv);
3695                 if (ret) {
3696                         IWL_ERROR("Could not read microcode: %d\n", ret);
3697                         mutex_unlock(&priv->mutex);
3698                         goto out_release_irq;
3699                 }
3700         }
3701
3702         ret = __iwl4965_up(priv);
3703
3704         mutex_unlock(&priv->mutex);
3705
3706         if (ret)
3707                 goto out_release_irq;
3708
3709         IWL_DEBUG_INFO("Start UP work done.\n");
3710
3711         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3712                 return 0;
3713
3714         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3715          * mac80211 will not be run successfully. */
3716         if (priv->ucode_type == UCODE_RT) {
3717                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3718                                 test_bit(STATUS_READY, &priv->status),
3719                                 UCODE_READY_TIMEOUT);
3720                 if (!ret) {
3721                         if (!test_bit(STATUS_READY, &priv->status)) {
3722                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
3723                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
3724                                 ret = -ETIMEDOUT;
3725                                 goto out_release_irq;
3726                         }
3727                 }
3728
3729                 priv->is_open = 1;
3730         }
3731         IWL_DEBUG_MAC80211("leave\n");
3732         return 0;
3733
3734 out_release_irq:
3735         free_irq(priv->pci_dev->irq, priv);
3736 out_disable_msi:
3737         pci_disable_msi(priv->pci_dev);
3738         pci_disable_device(priv->pci_dev);
3739         priv->is_open = 0;
3740         IWL_DEBUG_MAC80211("leave - failed\n");
3741         return ret;
3742 }
3743
3744 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
3745 {
3746         struct iwl_priv *priv = hw->priv;
3747
3748         IWL_DEBUG_MAC80211("enter\n");
3749
3750         if (!priv->is_open) {
3751                 IWL_DEBUG_MAC80211("leave - skip\n");
3752                 return;
3753         }
3754
3755         priv->is_open = 0;
3756
3757         if (iwl_is_ready_rf(priv)) {
3758                 /* stop mac, cancel any scan request and clear
3759                  * RXON_FILTER_ASSOC_MSK BIT
3760                  */
3761                 mutex_lock(&priv->mutex);
3762                 iwl4965_scan_cancel_timeout(priv, 100);
3763                 cancel_delayed_work(&priv->post_associate);
3764                 mutex_unlock(&priv->mutex);
3765         }
3766
3767         iwl4965_down(priv);
3768
3769         flush_workqueue(priv->workqueue);
3770         free_irq(priv->pci_dev->irq, priv);
3771         pci_disable_msi(priv->pci_dev);
3772         pci_save_state(priv->pci_dev);
3773         pci_disable_device(priv->pci_dev);
3774
3775         IWL_DEBUG_MAC80211("leave\n");
3776 }
3777
3778 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3779 {
3780         struct iwl_priv *priv = hw->priv;
3781
3782         IWL_DEBUG_MAC80211("enter\n");
3783
3784         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
3785                 IWL_DEBUG_MAC80211("leave - monitor\n");
3786                 return -1;
3787         }
3788
3789         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3790                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3791
3792         if (iwl_tx_skb(priv, skb))
3793                 dev_kfree_skb_any(skb);
3794
3795         IWL_DEBUG_MAC80211("leave\n");
3796         return 0;
3797 }
3798
3799 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
3800                                  struct ieee80211_if_init_conf *conf)
3801 {
3802         struct iwl_priv *priv = hw->priv;
3803         unsigned long flags;
3804         DECLARE_MAC_BUF(mac);
3805
3806         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
3807
3808         if (priv->vif) {
3809                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
3810                 return -EOPNOTSUPP;
3811         }
3812
3813         spin_lock_irqsave(&priv->lock, flags);
3814         priv->vif = conf->vif;
3815
3816         spin_unlock_irqrestore(&priv->lock, flags);
3817
3818         mutex_lock(&priv->mutex);
3819
3820         if (conf->mac_addr) {
3821                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
3822                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3823         }
3824
3825         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
3826                 /* we are not ready, will run again when ready */
3827                 set_bit(STATUS_MODE_PENDING, &priv->status);
3828
3829         mutex_unlock(&priv->mutex);
3830
3831         IWL_DEBUG_MAC80211("leave\n");
3832         return 0;
3833 }
3834
3835 /**
3836  * iwl4965_mac_config - mac80211 config callback
3837  *
3838  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3839  * be set inappropriately and the driver currently sets the hardware up to
3840  * use it whenever needed.
3841  */
3842 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3843 {
3844         struct iwl_priv *priv = hw->priv;
3845         const struct iwl_channel_info *ch_info;
3846         unsigned long flags;
3847         int ret = 0;
3848         u16 channel;
3849
3850         mutex_lock(&priv->mutex);
3851         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
3852
3853         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3854
3855
3856         if (priv->cfg->ops->lib->radio_kill_sw &&
3857             priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled)) {
3858                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
3859                 mutex_unlock(&priv->mutex);
3860         }
3861
3862         if (!iwl_is_ready(priv)) {
3863                 IWL_DEBUG_MAC80211("leave - not ready\n");
3864                 ret = -EIO;
3865                 goto out;
3866         }
3867
3868         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
3869                      test_bit(STATUS_SCANNING, &priv->status))) {
3870                 IWL_DEBUG_MAC80211("leave - scanning\n");
3871                 set_bit(STATUS_CONF_PENDING, &priv->status);
3872                 mutex_unlock(&priv->mutex);
3873                 return 0;
3874         }
3875
3876         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3877         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
3878         if (!is_channel_valid(ch_info)) {
3879                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3880                 ret = -EINVAL;
3881                 goto out;
3882         }
3883
3884         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
3885             !is_channel_ibss(ch_info)) {
3886                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
3887                         conf->channel->hw_value, conf->channel->band);
3888                 ret = -EINVAL;
3889                 goto out;
3890         }
3891
3892         spin_lock_irqsave(&priv->lock, flags);
3893
3894         /* if we are switching from ht to 2.4 clear flags
3895          * from any ht related info since 2.4 does not
3896          * support ht */
3897         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
3898 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3899             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3900 #endif
3901         )
3902                 priv->staging_rxon.flags = 0;
3903
3904         iwl_set_rxon_channel(priv, conf->channel->band, channel);
3905
3906         iwl_set_flags_for_band(priv, conf->channel->band);
3907
3908         /* The list of supported rates and rate mask can be different
3909          * for each band; since the band may have changed, reset
3910          * the rate mask to what mac80211 lists */
3911         iwl4965_set_rate(priv);
3912
3913         spin_unlock_irqrestore(&priv->lock, flags);
3914
3915 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3916         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3917                 iwl4965_hw_channel_switch(priv, conf->channel);
3918                 goto out;
3919         }
3920 #endif
3921
3922         if (!conf->radio_enabled) {
3923                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3924                 goto out;
3925         }
3926
3927         if (iwl_is_rfkill(priv)) {
3928                 IWL_DEBUG_MAC80211("leave - RF kill\n");
3929                 ret = -EIO;
3930                 goto out;
3931         }
3932
3933         iwl4965_set_rate(priv);
3934
3935         if (memcmp(&priv->active_rxon,
3936                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
3937                 iwl4965_commit_rxon(priv);
3938         else
3939                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3940
3941         IWL_DEBUG_MAC80211("leave\n");
3942
3943 out:
3944         clear_bit(STATUS_CONF_PENDING, &priv->status);
3945         mutex_unlock(&priv->mutex);
3946         return ret;
3947 }
3948
3949 static void iwl4965_config_ap(struct iwl_priv *priv)
3950 {
3951         int ret = 0;
3952
3953         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3954                 return;
3955
3956         /* The following should be done only at AP bring up */
3957         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3958
3959                 /* RXON - unassoc (to set timing command) */
3960                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3961                 iwl4965_commit_rxon(priv);
3962
3963                 /* RXON Timing */
3964                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3965                 iwl4965_setup_rxon_timing(priv);
3966                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3967                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
3968                 if (ret)
3969                         IWL_WARNING("REPLY_RXON_TIMING failed - "
3970                                         "Attempting to continue.\n");
3971
3972                 iwl_set_rxon_chain(priv);
3973
3974                 /* FIXME: what should be the assoc_id for AP? */
3975                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3976                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3977                         priv->staging_rxon.flags |=
3978                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3979                 else
3980                         priv->staging_rxon.flags &=
3981                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3982
3983                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3984                         if (priv->assoc_capability &
3985                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3986                                 priv->staging_rxon.flags |=
3987                                         RXON_FLG_SHORT_SLOT_MSK;
3988                         else
3989                                 priv->staging_rxon.flags &=
3990                                         ~RXON_FLG_SHORT_SLOT_MSK;
3991
3992                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3993                                 priv->staging_rxon.flags &=
3994                                         ~RXON_FLG_SHORT_SLOT_MSK;
3995                 }
3996                 /* restore RXON assoc */
3997                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3998                 iwl4965_commit_rxon(priv);
3999                 iwl4965_activate_qos(priv, 1);
4000                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4001         }
4002         iwl4965_send_beacon_cmd(priv);
4003
4004         /* FIXME - we need to add code here to detect a totally new
4005          * configuration, reset the AP, unassoc, rxon timing, assoc,
4006          * clear sta table, add BCAST sta... */
4007 }
4008
4009 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4010                                         struct ieee80211_vif *vif,
4011                                     struct ieee80211_if_conf *conf)
4012 {
4013         struct iwl_priv *priv = hw->priv;
4014         DECLARE_MAC_BUF(mac);
4015         unsigned long flags;
4016         int rc;
4017
4018         if (conf == NULL)
4019                 return -EIO;
4020
4021         if (priv->vif != vif) {
4022                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4023                 return 0;
4024         }
4025
4026         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4027             (!conf->beacon || !conf->ssid_len)) {
4028                 IWL_DEBUG_MAC80211
4029                     ("Leaving in AP mode because HostAPD is not ready.\n");
4030                 return 0;
4031         }
4032
4033         if (!iwl_is_alive(priv))
4034                 return -EAGAIN;
4035
4036         mutex_lock(&priv->mutex);
4037
4038         if (conf->bssid)
4039                 IWL_DEBUG_MAC80211("bssid: %s\n",
4040                                    print_mac(mac, conf->bssid));
4041
4042 /*
4043  * very dubious code was here; the probe filtering flag is never set:
4044  *
4045         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4046             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4047  */
4048
4049         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4050                 if (!conf->bssid) {
4051                         conf->bssid = priv->mac_addr;
4052                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4053                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4054                                            print_mac(mac, conf->bssid));
4055                 }
4056                 if (priv->ibss_beacon)
4057                         dev_kfree_skb(priv->ibss_beacon);
4058
4059                 priv->ibss_beacon = conf->beacon;
4060         }
4061
4062         if (iwl_is_rfkill(priv))
4063                 goto done;
4064
4065         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4066             !is_multicast_ether_addr(conf->bssid)) {
4067                 /* If there is currently a HW scan going on in the background
4068                  * then we need to cancel it else the RXON below will fail. */
4069                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4070                         IWL_WARNING("Aborted scan still in progress "
4071                                     "after 100ms\n");
4072                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4073                         mutex_unlock(&priv->mutex);
4074                         return -EAGAIN;
4075                 }
4076                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4077
4078                 /* TODO: Audit driver for usage of these members and see
4079                  * if mac80211 deprecates them (priv->bssid looks like it
4080                  * shouldn't be there, but I haven't scanned the IBSS code
4081                  * to verify) - jpk */
4082                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4083
4084                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4085                         iwl4965_config_ap(priv);
4086                 else {
4087                         rc = iwl4965_commit_rxon(priv);
4088                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4089                                 iwl_rxon_add_station(
4090                                         priv, priv->active_rxon.bssid_addr, 1);
4091                 }
4092
4093         } else {
4094                 iwl4965_scan_cancel_timeout(priv, 100);
4095                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4096                 iwl4965_commit_rxon(priv);
4097         }
4098
4099  done:
4100         spin_lock_irqsave(&priv->lock, flags);
4101         if (!conf->ssid_len)
4102                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4103         else
4104                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4105
4106         priv->essid_len = conf->ssid_len;
4107         spin_unlock_irqrestore(&priv->lock, flags);
4108
4109         IWL_DEBUG_MAC80211("leave\n");
4110         mutex_unlock(&priv->mutex);
4111
4112         return 0;
4113 }
4114
4115 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4116                                  unsigned int changed_flags,
4117                                  unsigned int *total_flags,
4118                                  int mc_count, struct dev_addr_list *mc_list)
4119 {
4120         /*
4121          * XXX: dummy
4122          * see also iwl4965_connection_init_rx_config
4123          */
4124         struct iwl_priv *priv = hw->priv;
4125         int new_flags = 0;
4126         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4127                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4128                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4129                                            IEEE80211_IF_TYPE_MNTR,
4130                                            changed_flags, *total_flags);
4131                         /* queue work 'cuz mac80211 is holding a lock which
4132                          * prevents us from issuing (synchronous) f/w cmds */
4133                         queue_work(priv->workqueue, &priv->set_monitor);
4134                         new_flags &= FIF_PROMISC_IN_BSS |
4135                                      FIF_OTHER_BSS |
4136                                      FIF_ALLMULTI;
4137                 }
4138         }
4139         *total_flags = new_flags;
4140 }
4141
4142 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4143                                      struct ieee80211_if_init_conf *conf)
4144 {
4145         struct iwl_priv *priv = hw->priv;
4146
4147         IWL_DEBUG_MAC80211("enter\n");
4148
4149         mutex_lock(&priv->mutex);
4150
4151         if (iwl_is_ready_rf(priv)) {
4152                 iwl4965_scan_cancel_timeout(priv, 100);
4153                 cancel_delayed_work(&priv->post_associate);
4154                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4155                 iwl4965_commit_rxon(priv);
4156         }
4157         if (priv->vif == conf->vif) {
4158                 priv->vif = NULL;
4159                 memset(priv->bssid, 0, ETH_ALEN);
4160                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4161                 priv->essid_len = 0;
4162         }
4163         mutex_unlock(&priv->mutex);
4164
4165         IWL_DEBUG_MAC80211("leave\n");
4166
4167 }
4168
4169 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4170 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4171                                      struct ieee80211_vif *vif,
4172                                      struct ieee80211_bss_conf *bss_conf,
4173                                      u32 changes)
4174 {
4175         struct iwl_priv *priv = hw->priv;
4176
4177         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4178
4179         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4180                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4181                                    bss_conf->use_short_preamble);
4182                 if (bss_conf->use_short_preamble)
4183                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4184                 else
4185                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4186         }
4187
4188         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4189                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4190                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4191                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4192                 else
4193                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4194         }
4195
4196         if (changes & BSS_CHANGED_HT) {
4197                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4198                 iwl4965_ht_conf(priv, bss_conf);
4199                 iwl_set_rxon_chain(priv);
4200         }
4201
4202         if (changes & BSS_CHANGED_ASSOC) {
4203                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4204                 /* This should never happen as this function should
4205                  * never be called from interrupt context. */
4206                 if (WARN_ON_ONCE(in_interrupt()))
4207                         return;
4208                 if (bss_conf->assoc) {
4209                         priv->assoc_id = bss_conf->aid;
4210                         priv->beacon_int = bss_conf->beacon_int;
4211                         priv->timestamp = bss_conf->timestamp;
4212                         priv->assoc_capability = bss_conf->assoc_capability;
4213                         priv->next_scan_jiffies = jiffies +
4214                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4215                         mutex_lock(&priv->mutex);
4216                         iwl4965_post_associate(priv);
4217                         mutex_unlock(&priv->mutex);
4218                 } else {
4219                         priv->assoc_id = 0;
4220                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4221                 }
4222         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4223                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4224                         iwl_send_rxon_assoc(priv);
4225         }
4226
4227 }
4228
4229 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4230 {
4231         int rc = 0;
4232         unsigned long flags;
4233         struct iwl_priv *priv = hw->priv;
4234
4235         IWL_DEBUG_MAC80211("enter\n");
4236
4237         mutex_lock(&priv->mutex);
4238         spin_lock_irqsave(&priv->lock, flags);
4239
4240         if (!iwl_is_ready_rf(priv)) {
4241                 rc = -EIO;
4242                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4243                 goto out_unlock;
4244         }
4245
4246         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
4247                 rc = -EIO;
4248                 IWL_ERROR("ERROR: APs don't scan\n");
4249                 goto out_unlock;
4250         }
4251
4252         /* we don't schedule scan within next_scan_jiffies period */
4253         if (priv->next_scan_jiffies &&
4254                         time_after(priv->next_scan_jiffies, jiffies)) {
4255                 rc = -EAGAIN;
4256                 goto out_unlock;
4257         }
4258         /* if we just finished scan ask for delay */
4259         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4260                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
4261                 rc = -EAGAIN;
4262                 goto out_unlock;
4263         }
4264         if (len) {
4265                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4266                                iwl4965_escape_essid(ssid, len), (int)len);
4267
4268                 priv->one_direct_scan = 1;
4269                 priv->direct_ssid_len = (u8)
4270                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4271                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4272         } else
4273                 priv->one_direct_scan = 0;
4274
4275         rc = iwl4965_scan_initiate(priv);
4276
4277         IWL_DEBUG_MAC80211("leave\n");
4278
4279 out_unlock:
4280         spin_unlock_irqrestore(&priv->lock, flags);
4281         mutex_unlock(&priv->mutex);
4282
4283         return rc;
4284 }
4285
4286 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4287                         struct ieee80211_key_conf *keyconf, const u8 *addr,
4288                         u32 iv32, u16 *phase1key)
4289 {
4290         struct iwl_priv *priv = hw->priv;
4291         u8 sta_id = IWL_INVALID_STATION;
4292         unsigned long flags;
4293         __le16 key_flags = 0;
4294         int i;
4295         DECLARE_MAC_BUF(mac);
4296
4297         IWL_DEBUG_MAC80211("enter\n");
4298
4299         sta_id = iwl_find_station(priv, addr);
4300         if (sta_id == IWL_INVALID_STATION) {
4301                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4302                                    print_mac(mac, addr));
4303                 return;
4304         }
4305
4306         iwl4965_scan_cancel_timeout(priv, 100);
4307
4308         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4309         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4310         key_flags &= ~STA_KEY_FLG_INVALID;
4311
4312         if (sta_id == priv->hw_params.bcast_sta_id)
4313                 key_flags |= STA_KEY_MULTICAST_MSK;
4314
4315         spin_lock_irqsave(&priv->sta_lock, flags);
4316
4317         priv->stations[sta_id].sta.key.key_flags = key_flags;
4318         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4319
4320         for (i = 0; i < 5; i++)
4321                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4322                         cpu_to_le16(phase1key[i]);
4323
4324         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4325         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4326
4327         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4328
4329         spin_unlock_irqrestore(&priv->sta_lock, flags);
4330
4331         IWL_DEBUG_MAC80211("leave\n");
4332 }
4333
4334 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4335                            const u8 *local_addr, const u8 *addr,
4336                            struct ieee80211_key_conf *key)
4337 {
4338         struct iwl_priv *priv = hw->priv;
4339         DECLARE_MAC_BUF(mac);
4340         int ret = 0;
4341         u8 sta_id = IWL_INVALID_STATION;
4342         u8 is_default_wep_key = 0;
4343
4344         IWL_DEBUG_MAC80211("enter\n");
4345
4346         if (priv->hw_params.sw_crypto) {
4347                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4348                 return -EOPNOTSUPP;
4349         }
4350
4351         if (is_zero_ether_addr(addr))
4352                 /* only support pairwise keys */
4353                 return -EOPNOTSUPP;
4354
4355         sta_id = iwl_find_station(priv, addr);
4356         if (sta_id == IWL_INVALID_STATION) {
4357                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4358                                    print_mac(mac, addr));
4359                 return -EINVAL;
4360
4361         }
4362
4363         mutex_lock(&priv->mutex);
4364         iwl4965_scan_cancel_timeout(priv, 100);
4365         mutex_unlock(&priv->mutex);
4366
4367         /* If we are getting WEP group key and we didn't receive any key mapping
4368          * so far, we are in legacy wep mode (group key only), otherwise we are
4369          * in 1X mode.
4370          * In legacy wep mode, we use another host command to the uCode */
4371         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4372                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4373                 if (cmd == SET_KEY)
4374                         is_default_wep_key = !priv->key_mapping_key;
4375                 else
4376                         is_default_wep_key =
4377                                         (key->hw_key_idx == HW_KEY_DEFAULT);
4378         }
4379
4380         switch (cmd) {
4381         case SET_KEY:
4382                 if (is_default_wep_key)
4383                         ret = iwl_set_default_wep_key(priv, key);
4384                 else
4385                         ret = iwl_set_dynamic_key(priv, key, sta_id);
4386
4387                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4388                 break;
4389         case DISABLE_KEY:
4390                 if (is_default_wep_key)
4391                         ret = iwl_remove_default_wep_key(priv, key);
4392                 else
4393                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
4394
4395                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4396                 break;
4397         default:
4398                 ret = -EINVAL;
4399         }
4400
4401         IWL_DEBUG_MAC80211("leave\n");
4402
4403         return ret;
4404 }
4405
4406 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4407                            const struct ieee80211_tx_queue_params *params)
4408 {
4409         struct iwl_priv *priv = hw->priv;
4410         unsigned long flags;
4411         int q;
4412
4413         IWL_DEBUG_MAC80211("enter\n");
4414
4415         if (!iwl_is_ready_rf(priv)) {
4416                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4417                 return -EIO;
4418         }
4419
4420         if (queue >= AC_NUM) {
4421                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4422                 return 0;
4423         }
4424
4425         if (!priv->qos_data.qos_enable) {
4426                 priv->qos_data.qos_active = 0;
4427                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4428                 return 0;
4429         }
4430         q = AC_NUM - 1 - queue;
4431
4432         spin_lock_irqsave(&priv->lock, flags);
4433
4434         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4435         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4436         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4437         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4438                         cpu_to_le16((params->txop * 32));
4439
4440         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4441         priv->qos_data.qos_active = 1;
4442
4443         spin_unlock_irqrestore(&priv->lock, flags);
4444
4445         mutex_lock(&priv->mutex);
4446         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4447                 iwl4965_activate_qos(priv, 1);
4448         else if (priv->assoc_id && iwl_is_associated(priv))
4449                 iwl4965_activate_qos(priv, 0);
4450
4451         mutex_unlock(&priv->mutex);
4452
4453         IWL_DEBUG_MAC80211("leave\n");
4454         return 0;
4455 }
4456
4457 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4458                                 struct ieee80211_tx_queue_stats *stats)
4459 {
4460         struct iwl_priv *priv = hw->priv;
4461         int i, avail;
4462         struct iwl_tx_queue *txq;
4463         struct iwl_queue *q;
4464         unsigned long flags;
4465
4466         IWL_DEBUG_MAC80211("enter\n");
4467
4468         if (!iwl_is_ready_rf(priv)) {
4469                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4470                 return -EIO;
4471         }
4472
4473         spin_lock_irqsave(&priv->lock, flags);
4474
4475         for (i = 0; i < AC_NUM; i++) {
4476                 txq = &priv->txq[i];
4477                 q = &txq->q;
4478                 avail = iwl_queue_space(q);
4479
4480                 stats[i].len = q->n_window - avail;
4481                 stats[i].limit = q->n_window - q->high_mark;
4482                 stats[i].count = q->n_window;
4483
4484         }
4485         spin_unlock_irqrestore(&priv->lock, flags);
4486
4487         IWL_DEBUG_MAC80211("leave\n");
4488
4489         return 0;
4490 }
4491
4492 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4493                              struct ieee80211_low_level_stats *stats)
4494 {
4495         struct iwl_priv *priv = hw->priv;
4496
4497         priv = hw->priv;
4498         IWL_DEBUG_MAC80211("enter\n");
4499         IWL_DEBUG_MAC80211("leave\n");
4500
4501         return 0;
4502 }
4503
4504 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4505 {
4506         struct iwl_priv *priv;
4507
4508         priv = hw->priv;
4509         IWL_DEBUG_MAC80211("enter\n");
4510         IWL_DEBUG_MAC80211("leave\n");
4511
4512         return 0;
4513 }
4514
4515 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4516 {
4517         struct iwl_priv *priv = hw->priv;
4518         unsigned long flags;
4519
4520         mutex_lock(&priv->mutex);
4521         IWL_DEBUG_MAC80211("enter\n");
4522
4523         priv->lq_mngr.lq_ready = 0;
4524         spin_lock_irqsave(&priv->lock, flags);
4525         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4526         spin_unlock_irqrestore(&priv->lock, flags);
4527
4528         iwl_reset_qos(priv);
4529
4530         cancel_delayed_work(&priv->post_associate);
4531
4532         spin_lock_irqsave(&priv->lock, flags);
4533         priv->assoc_id = 0;
4534         priv->assoc_capability = 0;
4535         priv->assoc_station_added = 0;
4536
4537         /* new association get rid of ibss beacon skb */
4538         if (priv->ibss_beacon)
4539                 dev_kfree_skb(priv->ibss_beacon);
4540
4541         priv->ibss_beacon = NULL;
4542
4543         priv->beacon_int = priv->hw->conf.beacon_int;
4544         priv->timestamp = 0;
4545         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4546                 priv->beacon_int = 0;
4547
4548         spin_unlock_irqrestore(&priv->lock, flags);
4549
4550         if (!iwl_is_ready_rf(priv)) {
4551                 IWL_DEBUG_MAC80211("leave - not ready\n");
4552                 mutex_unlock(&priv->mutex);
4553                 return;
4554         }
4555
4556         /* we are restarting association process
4557          * clear RXON_FILTER_ASSOC_MSK bit
4558          */
4559         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4560                 iwl4965_scan_cancel_timeout(priv, 100);
4561                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4562                 iwl4965_commit_rxon(priv);
4563         }
4564
4565         iwl_power_update_mode(priv, 0);
4566
4567         /* Per mac80211.h: This is only used in IBSS mode... */
4568         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4569
4570                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4571                 mutex_unlock(&priv->mutex);
4572                 return;
4573         }
4574
4575         iwl4965_set_rate(priv);
4576
4577         mutex_unlock(&priv->mutex);
4578
4579         IWL_DEBUG_MAC80211("leave\n");
4580 }
4581
4582 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4583 {
4584         struct iwl_priv *priv = hw->priv;
4585         unsigned long flags;
4586
4587         mutex_lock(&priv->mutex);
4588         IWL_DEBUG_MAC80211("enter\n");
4589
4590         if (!iwl_is_ready_rf(priv)) {
4591                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4592                 mutex_unlock(&priv->mutex);
4593                 return -EIO;
4594         }
4595
4596         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4597                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4598                 mutex_unlock(&priv->mutex);
4599                 return -EIO;
4600         }
4601
4602         spin_lock_irqsave(&priv->lock, flags);
4603
4604         if (priv->ibss_beacon)
4605                 dev_kfree_skb(priv->ibss_beacon);
4606
4607         priv->ibss_beacon = skb;
4608
4609         priv->assoc_id = 0;
4610
4611         IWL_DEBUG_MAC80211("leave\n");
4612         spin_unlock_irqrestore(&priv->lock, flags);
4613
4614         iwl_reset_qos(priv);
4615
4616         iwl4965_post_associate(priv);
4617
4618         mutex_unlock(&priv->mutex);
4619
4620         return 0;
4621 }
4622
4623 /*****************************************************************************
4624  *
4625  * sysfs attributes
4626  *
4627  *****************************************************************************/
4628
4629 #ifdef CONFIG_IWLWIFI_DEBUG
4630
4631 /*
4632  * The following adds a new attribute to the sysfs representation
4633  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4634  * used for controlling the debug level.
4635  *
4636  * See the level definitions in iwl for details.
4637  */
4638
4639 static ssize_t show_debug_level(struct device *d,
4640                                 struct device_attribute *attr, char *buf)
4641 {
4642         struct iwl_priv *priv = d->driver_data;
4643
4644         return sprintf(buf, "0x%08X\n", priv->debug_level);
4645 }
4646 static ssize_t store_debug_level(struct device *d,
4647                                 struct device_attribute *attr,
4648                                  const char *buf, size_t count)
4649 {
4650         struct iwl_priv *priv = d->driver_data;
4651         char *p = (char *)buf;
4652         u32 val;
4653
4654         val = simple_strtoul(p, &p, 0);
4655         if (p == buf)
4656                 printk(KERN_INFO DRV_NAME
4657                        ": %s is not in hex or decimal form.\n", buf);
4658         else
4659                 priv->debug_level = val;
4660
4661         return strnlen(buf, count);
4662 }
4663
4664 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4665                         show_debug_level, store_debug_level);
4666
4667
4668 #endif /* CONFIG_IWLWIFI_DEBUG */
4669
4670
4671 static ssize_t show_version(struct device *d,
4672                                 struct device_attribute *attr, char *buf)
4673 {
4674         struct iwl_priv *priv = d->driver_data;
4675         struct iwl_alive_resp *palive = &priv->card_alive;
4676
4677         if (palive->is_valid)
4678                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
4679                                     "fw type: 0x%01X 0x%01X\n",
4680                                 palive->ucode_major, palive->ucode_minor,
4681                                 palive->sw_rev[0], palive->sw_rev[1],
4682                                 palive->ver_type, palive->ver_subtype);
4683
4684         else
4685                 return sprintf(buf, "fw not loaded\n");
4686 }
4687
4688 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
4689
4690 static ssize_t show_temperature(struct device *d,
4691                                 struct device_attribute *attr, char *buf)
4692 {
4693         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4694
4695         if (!iwl_is_alive(priv))
4696                 return -EAGAIN;
4697
4698         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
4699 }
4700
4701 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4702
4703 static ssize_t show_rs_window(struct device *d,
4704                               struct device_attribute *attr,
4705                               char *buf)
4706 {
4707         struct iwl_priv *priv = d->driver_data;
4708         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
4709 }
4710 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
4711
4712 static ssize_t show_tx_power(struct device *d,
4713                              struct device_attribute *attr, char *buf)
4714 {
4715         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4716         return sprintf(buf, "%d\n", priv->user_txpower_limit);
4717 }
4718
4719 static ssize_t store_tx_power(struct device *d,
4720                               struct device_attribute *attr,
4721                               const char *buf, size_t count)
4722 {
4723         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4724         char *p = (char *)buf;
4725         u32 val;
4726
4727         val = simple_strtoul(p, &p, 10);
4728         if (p == buf)
4729                 printk(KERN_INFO DRV_NAME
4730                        ": %s is not in decimal form.\n", buf);
4731         else
4732                 iwl4965_hw_reg_set_txpower(priv, val);
4733
4734         return count;
4735 }
4736
4737 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4738
4739 static ssize_t show_flags(struct device *d,
4740                           struct device_attribute *attr, char *buf)
4741 {
4742         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4743
4744         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4745 }
4746
4747 static ssize_t store_flags(struct device *d,
4748                            struct device_attribute *attr,
4749                            const char *buf, size_t count)
4750 {
4751         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4752         u32 flags = simple_strtoul(buf, NULL, 0);
4753
4754         mutex_lock(&priv->mutex);
4755         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4756                 /* Cancel any currently running scans... */
4757                 if (iwl4965_scan_cancel_timeout(priv, 100))
4758                         IWL_WARNING("Could not cancel scan.\n");
4759                 else {
4760                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4761                                        flags);
4762                         priv->staging_rxon.flags = cpu_to_le32(flags);
4763                         iwl4965_commit_rxon(priv);
4764                 }
4765         }
4766         mutex_unlock(&priv->mutex);
4767
4768         return count;
4769 }
4770
4771 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4772
4773 static ssize_t show_filter_flags(struct device *d,
4774                                  struct device_attribute *attr, char *buf)
4775 {
4776         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4777
4778         return sprintf(buf, "0x%04X\n",
4779                 le32_to_cpu(priv->active_rxon.filter_flags));
4780 }
4781
4782 static ssize_t store_filter_flags(struct device *d,
4783                                   struct device_attribute *attr,
4784                                   const char *buf, size_t count)
4785 {
4786         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4787         u32 filter_flags = simple_strtoul(buf, NULL, 0);
4788
4789         mutex_lock(&priv->mutex);
4790         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4791                 /* Cancel any currently running scans... */
4792                 if (iwl4965_scan_cancel_timeout(priv, 100))
4793                         IWL_WARNING("Could not cancel scan.\n");
4794                 else {
4795                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
4796                                        "0x%04X\n", filter_flags);
4797                         priv->staging_rxon.filter_flags =
4798                                 cpu_to_le32(filter_flags);
4799                         iwl4965_commit_rxon(priv);
4800                 }
4801         }
4802         mutex_unlock(&priv->mutex);
4803
4804         return count;
4805 }
4806
4807 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4808                    store_filter_flags);
4809
4810 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4811
4812 static ssize_t show_measurement(struct device *d,
4813                                 struct device_attribute *attr, char *buf)
4814 {
4815         struct iwl_priv *priv = dev_get_drvdata(d);
4816         struct iwl4965_spectrum_notification measure_report;
4817         u32 size = sizeof(measure_report), len = 0, ofs = 0;
4818         u8 *data = (u8 *) & measure_report;
4819         unsigned long flags;
4820
4821         spin_lock_irqsave(&priv->lock, flags);
4822         if (!(priv->measurement_status & MEASUREMENT_READY)) {
4823                 spin_unlock_irqrestore(&priv->lock, flags);
4824                 return 0;
4825         }
4826         memcpy(&measure_report, &priv->measure_report, size);
4827         priv->measurement_status = 0;
4828         spin_unlock_irqrestore(&priv->lock, flags);
4829
4830         while (size && (PAGE_SIZE - len)) {
4831                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4832                                    PAGE_SIZE - len, 1);
4833                 len = strlen(buf);
4834                 if (PAGE_SIZE - len)
4835                         buf[len++] = '\n';
4836
4837                 ofs += 16;
4838                 size -= min(size, 16U);
4839         }
4840
4841         return len;
4842 }
4843
4844 static ssize_t store_measurement(struct device *d,
4845                                  struct device_attribute *attr,
4846                                  const char *buf, size_t count)
4847 {
4848         struct iwl_priv *priv = dev_get_drvdata(d);
4849         struct ieee80211_measurement_params params = {
4850                 .channel = le16_to_cpu(priv->active_rxon.channel),
4851                 .start_time = cpu_to_le64(priv->last_tsf),
4852                 .duration = cpu_to_le16(1),
4853         };
4854         u8 type = IWL_MEASURE_BASIC;
4855         u8 buffer[32];
4856         u8 channel;
4857
4858         if (count) {
4859                 char *p = buffer;
4860                 strncpy(buffer, buf, min(sizeof(buffer), count));
4861                 channel = simple_strtoul(p, NULL, 0);
4862                 if (channel)
4863                         params.channel = channel;
4864
4865                 p = buffer;
4866                 while (*p && *p != ' ')
4867                         p++;
4868                 if (*p)
4869                         type = simple_strtoul(p + 1, NULL, 0);
4870         }
4871
4872         IWL_DEBUG_INFO("Invoking measurement of type %d on "
4873                        "channel %d (for '%s')\n", type, params.channel, buf);
4874         iwl4965_get_measurement(priv, &params, type);
4875
4876         return count;
4877 }
4878
4879 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4880                    show_measurement, store_measurement);
4881 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4882
4883 static ssize_t store_retry_rate(struct device *d,
4884                                 struct device_attribute *attr,
4885                                 const char *buf, size_t count)
4886 {
4887         struct iwl_priv *priv = dev_get_drvdata(d);
4888
4889         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4890         if (priv->retry_rate <= 0)
4891                 priv->retry_rate = 1;
4892
4893         return count;
4894 }
4895
4896 static ssize_t show_retry_rate(struct device *d,
4897                                struct device_attribute *attr, char *buf)
4898 {
4899         struct iwl_priv *priv = dev_get_drvdata(d);
4900         return sprintf(buf, "%d", priv->retry_rate);
4901 }
4902
4903 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4904                    store_retry_rate);
4905
4906 static ssize_t store_power_level(struct device *d,
4907                                  struct device_attribute *attr,
4908                                  const char *buf, size_t count)
4909 {
4910         struct iwl_priv *priv = dev_get_drvdata(d);
4911         int rc;
4912         int mode;
4913
4914         mode = simple_strtoul(buf, NULL, 0);
4915         mutex_lock(&priv->mutex);
4916
4917         if (!iwl_is_ready(priv)) {
4918                 rc = -EAGAIN;
4919                 goto out;
4920         }
4921
4922         rc = iwl_power_set_user_mode(priv, mode);
4923         if (rc) {
4924                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4925                 goto out;
4926         }
4927         rc = count;
4928
4929  out:
4930         mutex_unlock(&priv->mutex);
4931         return rc;
4932 }
4933
4934 #define MAX_WX_STRING 80
4935
4936 /* Values are in microsecond */
4937 static const s32 timeout_duration[] = {
4938         350000,
4939         250000,
4940         75000,
4941         37000,
4942         25000,
4943 };
4944 static const s32 period_duration[] = {
4945         400000,
4946         700000,
4947         1000000,
4948         1000000,
4949         1000000
4950 };
4951
4952 static ssize_t show_power_level(struct device *d,
4953                                 struct device_attribute *attr, char *buf)
4954 {
4955         struct iwl_priv *priv = dev_get_drvdata(d);
4956         int level = priv->power_data.power_mode;
4957         char *p = buf;
4958
4959         p += sprintf(p, "%d ", level);
4960         switch (level) {
4961         case IWL_POWER_MODE_CAM:
4962         case IWL_POWER_AC:
4963                 p += sprintf(p, "(AC)");
4964                 break;
4965         case IWL_POWER_BATTERY:
4966                 p += sprintf(p, "(BATTERY)");
4967                 break;
4968         default:
4969                 p += sprintf(p,
4970                              "(Timeout %dms, Period %dms)",
4971                              timeout_duration[level - 1] / 1000,
4972                              period_duration[level - 1] / 1000);
4973         }
4974 /*
4975         if (!(priv->power_mode & IWL_POWER_ENABLED))
4976                 p += sprintf(p, " OFF\n");
4977         else
4978                 p += sprintf(p, " \n");
4979 */
4980         p += sprintf(p, " \n");
4981         return (p - buf + 1);
4982 }
4983
4984 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4985                    store_power_level);
4986
4987 static ssize_t show_channels(struct device *d,
4988                              struct device_attribute *attr, char *buf)
4989 {
4990         /* all this shit doesn't belong into sysfs anyway */
4991         return 0;
4992 }
4993
4994 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4995
4996 static ssize_t show_statistics(struct device *d,
4997                                struct device_attribute *attr, char *buf)
4998 {
4999         struct iwl_priv *priv = dev_get_drvdata(d);
5000         u32 size = sizeof(struct iwl4965_notif_statistics);
5001         u32 len = 0, ofs = 0;
5002         u8 *data = (u8 *) & priv->statistics;
5003         int rc = 0;
5004
5005         if (!iwl_is_alive(priv))
5006                 return -EAGAIN;
5007
5008         mutex_lock(&priv->mutex);
5009         rc = iwl_send_statistics_request(priv, 0);
5010         mutex_unlock(&priv->mutex);
5011
5012         if (rc) {
5013                 len = sprintf(buf,
5014                               "Error sending statistics request: 0x%08X\n", rc);
5015                 return len;
5016         }
5017
5018         while (size && (PAGE_SIZE - len)) {
5019                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5020                                    PAGE_SIZE - len, 1);
5021                 len = strlen(buf);
5022                 if (PAGE_SIZE - len)
5023                         buf[len++] = '\n';
5024
5025                 ofs += 16;
5026                 size -= min(size, 16U);
5027         }
5028
5029         return len;
5030 }
5031
5032 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5033
5034 static ssize_t show_status(struct device *d,
5035                            struct device_attribute *attr, char *buf)
5036 {
5037         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5038         if (!iwl_is_alive(priv))
5039                 return -EAGAIN;
5040         return sprintf(buf, "0x%08x\n", (int)priv->status);
5041 }
5042
5043 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5044
5045 /*****************************************************************************
5046  *
5047  * driver setup and teardown
5048  *
5049  *****************************************************************************/
5050
5051 static void iwl_setup_deferred_work(struct iwl_priv *priv)
5052 {
5053         priv->workqueue = create_workqueue(DRV_NAME);
5054
5055         init_waitqueue_head(&priv->wait_command_queue);
5056
5057         INIT_WORK(&priv->up, iwl4965_bg_up);
5058         INIT_WORK(&priv->restart, iwl4965_bg_restart);
5059         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5060         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5061         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5062         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5063         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5064         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5065         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5066         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
5067         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5068         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5069         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5070         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5071
5072         if (priv->cfg->ops->lib->setup_deferred_work)
5073                 priv->cfg->ops->lib->setup_deferred_work(priv);
5074
5075         init_timer(&priv->statistics_periodic);
5076         priv->statistics_periodic.data = (unsigned long)priv;
5077         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
5078
5079         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5080                      iwl4965_irq_tasklet, (unsigned long)priv);
5081 }
5082
5083 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
5084 {
5085         if (priv->cfg->ops->lib->cancel_deferred_work)
5086                 priv->cfg->ops->lib->cancel_deferred_work(priv);
5087
5088         cancel_delayed_work_sync(&priv->init_alive_start);
5089         cancel_delayed_work(&priv->scan_check);
5090         cancel_delayed_work(&priv->alive_start);
5091         cancel_delayed_work(&priv->post_associate);
5092         cancel_work_sync(&priv->beacon_update);
5093         del_timer_sync(&priv->statistics_periodic);
5094 }
5095
5096 static struct attribute *iwl4965_sysfs_entries[] = {
5097         &dev_attr_channels.attr,
5098         &dev_attr_flags.attr,
5099         &dev_attr_filter_flags.attr,
5100 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5101         &dev_attr_measurement.attr,
5102 #endif
5103         &dev_attr_power_level.attr,
5104         &dev_attr_retry_rate.attr,
5105         &dev_attr_rs_window.attr,
5106         &dev_attr_statistics.attr,
5107         &dev_attr_status.attr,
5108         &dev_attr_temperature.attr,
5109         &dev_attr_tx_power.attr,
5110 #ifdef CONFIG_IWLWIFI_DEBUG
5111         &dev_attr_debug_level.attr,
5112 #endif
5113         &dev_attr_version.attr,
5114
5115         NULL
5116 };
5117
5118 static struct attribute_group iwl4965_attribute_group = {
5119         .name = NULL,           /* put in device directory */
5120         .attrs = iwl4965_sysfs_entries,
5121 };
5122
5123 static struct ieee80211_ops iwl4965_hw_ops = {
5124         .tx = iwl4965_mac_tx,
5125         .start = iwl4965_mac_start,
5126         .stop = iwl4965_mac_stop,
5127         .add_interface = iwl4965_mac_add_interface,
5128         .remove_interface = iwl4965_mac_remove_interface,
5129         .config = iwl4965_mac_config,
5130         .config_interface = iwl4965_mac_config_interface,
5131         .configure_filter = iwl4965_configure_filter,
5132         .set_key = iwl4965_mac_set_key,
5133         .update_tkip_key = iwl4965_mac_update_tkip_key,
5134         .get_stats = iwl4965_mac_get_stats,
5135         .get_tx_stats = iwl4965_mac_get_tx_stats,
5136         .conf_tx = iwl4965_mac_conf_tx,
5137         .get_tsf = iwl4965_mac_get_tsf,
5138         .reset_tsf = iwl4965_mac_reset_tsf,
5139         .beacon_update = iwl4965_mac_beacon_update,
5140         .bss_info_changed = iwl4965_bss_info_changed,
5141         .ampdu_action = iwl4965_mac_ampdu_action,
5142         .hw_scan = iwl4965_mac_hw_scan
5143 };
5144
5145 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5146 {
5147         int err = 0;
5148         struct iwl_priv *priv;
5149         struct ieee80211_hw *hw;
5150         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5151         unsigned long flags;
5152         DECLARE_MAC_BUF(mac);
5153
5154         /************************
5155          * 1. Allocating HW data
5156          ************************/
5157
5158         /* Disabling hardware scan means that mac80211 will perform scans
5159          * "the hard way", rather than using device's scan. */
5160         if (cfg->mod_params->disable_hw_scan) {
5161                 if (cfg->mod_params->debug & IWL_DL_INFO)
5162                         dev_printk(KERN_DEBUG, &(pdev->dev),
5163                                    "Disabling hw_scan\n");
5164                 iwl4965_hw_ops.hw_scan = NULL;
5165         }
5166
5167         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5168         if (!hw) {
5169                 err = -ENOMEM;
5170                 goto out;
5171         }
5172         priv = hw->priv;
5173         /* At this point both hw and priv are allocated. */
5174
5175         SET_IEEE80211_DEV(hw, &pdev->dev);
5176
5177         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5178         priv->cfg = cfg;
5179         priv->pci_dev = pdev;
5180
5181 #ifdef CONFIG_IWLWIFI_DEBUG
5182         priv->debug_level = priv->cfg->mod_params->debug;
5183         atomic_set(&priv->restrict_refcnt, 0);
5184 #endif
5185
5186         /**************************
5187          * 2. Initializing PCI bus
5188          **************************/
5189         if (pci_enable_device(pdev)) {
5190                 err = -ENODEV;
5191                 goto out_ieee80211_free_hw;
5192         }
5193
5194         pci_set_master(pdev);
5195
5196         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5197         if (!err)
5198                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5199         if (err) {
5200                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5201                 if (!err)
5202                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5203                 /* both attempts failed: */
5204                 if (err) {
5205                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
5206                                 DRV_NAME);
5207                         goto out_pci_disable_device;
5208                 }
5209         }
5210
5211         err = pci_request_regions(pdev, DRV_NAME);
5212         if (err)
5213                 goto out_pci_disable_device;
5214
5215         pci_set_drvdata(pdev, priv);
5216
5217         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5218          * PCI Tx retries from interfering with C3 CPU state */
5219         pci_write_config_byte(pdev, 0x41, 0x00);
5220
5221         /***********************
5222          * 3. Read REV register
5223          ***********************/
5224         priv->hw_base = pci_iomap(pdev, 0, 0);
5225         if (!priv->hw_base) {
5226                 err = -ENODEV;
5227                 goto out_pci_release_regions;
5228         }
5229
5230         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5231                 (unsigned long long) pci_resource_len(pdev, 0));
5232         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5233
5234         iwl_hw_detect(priv);
5235         printk(KERN_INFO DRV_NAME
5236                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5237                 priv->cfg->name, priv->hw_rev);
5238
5239         /* amp init */
5240         err = priv->cfg->ops->lib->apm_ops.init(priv);
5241         if (err < 0) {
5242                 IWL_DEBUG_INFO("Failed to init APMG\n");
5243                 goto out_iounmap;
5244         }
5245         /*****************
5246          * 4. Read EEPROM
5247          *****************/
5248         /* Read the EEPROM */
5249         err = iwl_eeprom_init(priv);
5250         if (err) {
5251                 IWL_ERROR("Unable to init EEPROM\n");
5252                 goto out_iounmap;
5253         }
5254         err = iwl_eeprom_check_version(priv);
5255         if (err)
5256                 goto out_iounmap;
5257
5258         /* extract MAC Address */
5259         iwl_eeprom_get_mac(priv, priv->mac_addr);
5260         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5261         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5262
5263         /************************
5264          * 5. Setup HW constants
5265          ************************/
5266         /* Device-specific setup */
5267         if (priv->cfg->ops->lib->set_hw_params(priv)) {
5268                 IWL_ERROR("failed to set hw parameters\n");
5269                 goto out_free_eeprom;
5270         }
5271
5272         /*******************
5273          * 6. Setup priv
5274          *******************/
5275
5276         err = iwl_init_drv(priv);
5277         if (err)
5278                 goto out_free_eeprom;
5279         /* At this point both hw and priv are initialized. */
5280
5281         /**********************************
5282          * 7. Initialize module parameters
5283          **********************************/
5284
5285         /* Disable radio (SW RF KILL) via parameter when loading driver */
5286         if (priv->cfg->mod_params->disable) {
5287                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5288                 IWL_DEBUG_INFO("Radio disabled.\n");
5289         }
5290
5291         /********************
5292          * 8. Setup services
5293          ********************/
5294         spin_lock_irqsave(&priv->lock, flags);
5295         iwl4965_disable_interrupts(priv);
5296         spin_unlock_irqrestore(&priv->lock, flags);
5297
5298         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5299         if (err) {
5300                 IWL_ERROR("failed to create sysfs device attributes\n");
5301                 goto out_uninit_drv;
5302         }
5303
5304
5305         iwl_setup_deferred_work(priv);
5306         iwl4965_setup_rx_handlers(priv);
5307
5308         /********************
5309          * 9. Conclude
5310          ********************/
5311         pci_save_state(pdev);
5312         pci_disable_device(pdev);
5313
5314         /**********************************
5315          * 10. Setup and register mac80211
5316          **********************************/
5317
5318         err = iwl_setup_mac(priv);
5319         if (err)
5320                 goto out_remove_sysfs;
5321
5322         err = iwl_dbgfs_register(priv, DRV_NAME);
5323         if (err)
5324                 IWL_ERROR("failed to create debugfs files\n");
5325
5326         /* notify iwlcore to init */
5327         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5328         return 0;
5329
5330  out_remove_sysfs:
5331         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5332  out_uninit_drv:
5333         iwl_uninit_drv(priv);
5334  out_free_eeprom:
5335         iwl_eeprom_free(priv);
5336  out_iounmap:
5337         pci_iounmap(pdev, priv->hw_base);
5338  out_pci_release_regions:
5339         pci_release_regions(pdev);
5340         pci_set_drvdata(pdev, NULL);
5341  out_pci_disable_device:
5342         pci_disable_device(pdev);
5343  out_ieee80211_free_hw:
5344         ieee80211_free_hw(priv->hw);
5345  out:
5346         return err;
5347 }
5348
5349 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5350 {
5351         struct iwl_priv *priv = pci_get_drvdata(pdev);
5352         struct list_head *p, *q;
5353         int i;
5354         unsigned long flags;
5355
5356         if (!priv)
5357                 return;
5358
5359         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5360
5361         iwl_dbgfs_unregister(priv);
5362         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5363
5364         if (priv->mac80211_registered) {
5365                 ieee80211_unregister_hw(priv->hw);
5366                 priv->mac80211_registered = 0;
5367         }
5368
5369         set_bit(STATUS_EXIT_PENDING, &priv->status);
5370
5371         iwl4965_down(priv);
5372
5373         /* make sure we flush any pending irq or
5374          * tasklet for the driver
5375          */
5376         spin_lock_irqsave(&priv->lock, flags);
5377         iwl4965_disable_interrupts(priv);
5378         spin_unlock_irqrestore(&priv->lock, flags);
5379
5380         iwl_synchronize_irq(priv);
5381
5382         /* Free MAC hash list for ADHOC */
5383         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5384                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5385                         list_del(p);
5386                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5387                 }
5388         }
5389
5390         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5391
5392         iwl4965_dealloc_ucode_pci(priv);
5393
5394         if (priv->rxq.bd)
5395                 iwl_rx_queue_free(priv, &priv->rxq);
5396         iwl_hw_txq_ctx_free(priv);
5397
5398         iwlcore_clear_stations_table(priv);
5399         iwl_eeprom_free(priv);
5400
5401
5402         /*netif_stop_queue(dev); */
5403         flush_workqueue(priv->workqueue);
5404
5405         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5406          * priv->workqueue... so we can't take down the workqueue
5407          * until now... */
5408         destroy_workqueue(priv->workqueue);
5409         priv->workqueue = NULL;
5410
5411         pci_iounmap(pdev, priv->hw_base);
5412         pci_release_regions(pdev);
5413         pci_disable_device(pdev);
5414         pci_set_drvdata(pdev, NULL);
5415
5416         iwl_uninit_drv(priv);
5417
5418         if (priv->ibss_beacon)
5419                 dev_kfree_skb(priv->ibss_beacon);
5420
5421         ieee80211_free_hw(priv->hw);
5422 }
5423
5424 #ifdef CONFIG_PM
5425
5426 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5427 {
5428         struct iwl_priv *priv = pci_get_drvdata(pdev);
5429
5430         if (priv->is_open) {
5431                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5432                 iwl4965_mac_stop(priv->hw);
5433                 priv->is_open = 1;
5434         }
5435
5436         pci_set_power_state(pdev, PCI_D3hot);
5437
5438         return 0;
5439 }
5440
5441 static int iwl4965_pci_resume(struct pci_dev *pdev)
5442 {
5443         struct iwl_priv *priv = pci_get_drvdata(pdev);
5444
5445         pci_set_power_state(pdev, PCI_D0);
5446
5447         if (priv->is_open)
5448                 iwl4965_mac_start(priv->hw);
5449
5450         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5451         return 0;
5452 }
5453
5454 #endif /* CONFIG_PM */
5455
5456 /*****************************************************************************
5457  *
5458  * driver and module entry point
5459  *
5460  *****************************************************************************/
5461
5462 /* Hardware specific file defines the PCI IDs table for that hardware module */
5463 static struct pci_device_id iwl_hw_card_ids[] = {
5464         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5465         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5466 #ifdef CONFIG_IWL5000
5467         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5468         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5469         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5470 #endif /* CONFIG_IWL5000 */
5471         {0}
5472 };
5473 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5474
5475 static struct pci_driver iwl_driver = {
5476         .name = DRV_NAME,
5477         .id_table = iwl_hw_card_ids,
5478         .probe = iwl4965_pci_probe,
5479         .remove = __devexit_p(iwl4965_pci_remove),
5480 #ifdef CONFIG_PM
5481         .suspend = iwl4965_pci_suspend,
5482         .resume = iwl4965_pci_resume,
5483 #endif
5484 };
5485
5486 static int __init iwl4965_init(void)
5487 {
5488
5489         int ret;
5490         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5491         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5492
5493         ret = iwl4965_rate_control_register();
5494         if (ret) {
5495                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5496                 return ret;
5497         }
5498
5499         ret = pci_register_driver(&iwl_driver);
5500         if (ret) {
5501                 IWL_ERROR("Unable to initialize PCI module\n");
5502                 goto error_register;
5503         }
5504
5505         return ret;
5506
5507 error_register:
5508         iwl4965_rate_control_unregister();
5509         return ret;
5510 }
5511
5512 static void __exit iwl4965_exit(void)
5513 {
5514         pci_unregister_driver(&iwl_driver);
5515         iwl4965_rate_control_unregister();
5516 }
5517
5518 module_exit(iwl4965_exit);
5519 module_init(iwl4965_init);