err.no Git - linux-2.6/blob - 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 != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
 668             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
 669                 iwl_conf->supported_chan_width = 0;
 670
 671         iwl_conf->tx_mimo_ps_mode =
 672                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 673         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 674
 675         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 676         iwl_conf->tx_chan_width =
 677                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 678         iwl_conf->ht_protection =
 679                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 680         iwl_conf->non_GF_STA_present =
 681                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 682
 683         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 684         IWL_DEBUG_MAC80211("leave\n");
 685 }
 686
 687 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 688                         u8 *pos, int *left)
 689 {
 690         struct ieee80211_ht_cap *ht_cap;
 691
 692         if (!sband || !sband->ht_info.ht_supported)
 693                 return;
 694
 695         if (*left < sizeof(struct ieee80211_ht_cap))
 696                 return;
 697
 698         *pos++ = sizeof(struct ieee80211_ht_cap);
 699         ht_cap = (struct ieee80211_ht_cap *) pos;
 700
 701         ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
 702         memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
 703         ht_cap->ampdu_params_info =
 704                 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
 705                 ((sband->ht_info.ampdu_density << 2) &
 706                         IEEE80211_HT_CAP_AMPDU_DENSITY);
 707         *left -= sizeof(struct ieee80211_ht_cap);
 708 }
 709
 710 /**
 711  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
 712  */
 713 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
 714                                   enum ieee80211_band band,
 715                                   struct ieee80211_mgmt *frame,
 716                                   int left, int is_direct)
 717 {
 718         int len = 0;
 719         u8 *pos = NULL;
 720         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
 721         const struct ieee80211_supported_band *sband =
 722                                                 iwl_get_hw_mode(priv, band);
 723
 724         /* Make sure there is enough space for the probe request,
 725          * two mandatory IEs and the data */
 726         left -= 24;
 727         if (left < 0)
 728                 return 0;
 729         len += 24;
 730
 731         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 732         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
 733         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
 734         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
 735         frame->seq_ctrl = 0;
 736
 737         /* fill in our indirect SSID IE */
 738         /* ...next IE... */
 739
 740         left -= 2;
 741         if (left < 0)
 742                 return 0;
 743         len += 2;
 744         pos = &(frame->u.probe_req.variable[0]);
 745         *pos++ = WLAN_EID_SSID;
 746         *pos++ = 0;
 747
 748         /* fill in our direct SSID IE... */
 749         if (is_direct) {
 750                 /* ...next IE... */
 751                 left -= 2 + priv->essid_len;
 752                 if (left < 0)
 753                         return 0;
 754                 /* ... fill it in... */
 755                 *pos++ = WLAN_EID_SSID;
 756                 *pos++ = priv->essid_len;
 757                 memcpy(pos, priv->essid, priv->essid_len);
 758                 pos += priv->essid_len;
 759                 len += 2 + priv->essid_len;
 760         }
 761
 762         /* fill in supported rate */
 763         /* ...next IE... */
 764         left -= 2;
 765         if (left < 0)
 766                 return 0;
 767
 768         /* ... fill it in... */
 769         *pos++ = WLAN_EID_SUPP_RATES;
 770         *pos = 0;
 771
 772         /* exclude 60M rate */
 773         active_rates = priv->rates_mask;
 774         active_rates &= ~IWL_RATE_60M_MASK;
 775
 776         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
 777
 778         cck_rates = IWL_CCK_RATES_MASK & active_rates;
 779         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
 780                         active_rate_basic, &left);
 781         active_rates &= ~ret_rates;
 782
 783         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
 784                                  active_rate_basic, &left);
 785         active_rates &= ~ret_rates;
 786
 787         len += 2 + *pos;
 788         pos += (*pos) + 1;
 789         if (active_rates == 0)
 790                 goto fill_end;
 791
 792         /* fill in supported extended rate */
 793         /* ...next IE... */
 794         left -= 2;
 795         if (left < 0)
 796                 return 0;
 797         /* ... fill it in... */
 798         *pos++ = WLAN_EID_EXT_SUPP_RATES;
 799         *pos = 0;
 800         iwl4965_supported_rate_to_ie(pos, active_rates,
 801                                  active_rate_basic, &left);
 802         if (*pos > 0)
 803                 len += 2 + *pos;
 804
 805  fill_end:
 806         /* fill in HT IE */
 807         left -= 2;
 808         if (left < 0)
 809                 return 0;
 810
 811         *pos++ = WLAN_EID_HT_CAPABILITY;
 812         *pos = 0;
 813
 814         iwl_ht_cap_to_ie(sband, pos, &left);
 815
 816         if (*pos > 0)
 817                 len += 2 + *pos;
 818         return (u16)len;
 819 }
 820
 821 /*
 822  * QoS  support
 823 */
 824 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 825                                        struct iwl4965_qosparam_cmd *qos)
 826 {
 827
 828         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 829                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 830 }
 831
 832 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 833 {
 834         unsigned long flags;
 835
 836         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 837                 return;
 838
 839         if (!priv->qos_data.qos_enable)
 840                 return;
 841
 842         spin_lock_irqsave(&priv->lock, flags);
 843         priv->qos_data.def_qos_parm.qos_flags = 0;
 844
 845         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 846             !priv->qos_data.qos_cap.q_AP.txop_request)
 847                 priv->qos_data.def_qos_parm.qos_flags |=
 848                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 849         if (priv->qos_data.qos_active)
 850                 priv->qos_data.def_qos_parm.qos_flags |=
 851                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 852
 853         if (priv->current_ht_config.is_ht)
 854                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 855
 856         spin_unlock_irqrestore(&priv->lock, flags);
 857
 858         if (force || iwl_is_associated(priv)) {
 859                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 860                                 priv->qos_data.qos_active,
 861                                 priv->qos_data.def_qos_parm.qos_flags);
 862
 863                 iwl4965_send_qos_params_command(priv,
 864                                 &(priv->qos_data.def_qos_parm));
 865         }
 866 }
 867
 868 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 869 {
 870         /* Filter incoming packets to determine if they are targeted toward
 871          * this network, discarding packets coming from ourselves */
 872         switch (priv->iw_mode) {
 873         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
 874                 /* packets from our adapter are dropped (echo) */
 875                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
 876                         return 0;
 877                 /* {broad,multi}cast packets to our IBSS go through */
 878                 if (is_multicast_ether_addr(header->addr1))
 879                         return !compare_ether_addr(header->addr3, priv->bssid);
 880                 /* packets to our adapter go through */
 881                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 882         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
 883                 /* packets from our adapter are dropped (echo) */
 884                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
 885                         return 0;
 886                 /* {broad,multi}cast packets to our BSS go through */
 887                 if (is_multicast_ether_addr(header->addr1))
 888                         return !compare_ether_addr(header->addr2, priv->bssid);
 889                 /* packets to our adapter go through */
 890                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 891         default:
 892                 break;
 893         }
 894
 895         return 1;
 896 }
 897
 898
 899
 900 /**
 901  * iwl4965_scan_cancel - Cancel any currently executing HW scan
 902  *
 903  * NOTE: priv->mutex is not required before calling this function
 904  */
 905 static int iwl4965_scan_cancel(struct iwl_priv *priv)
 906 {
 907         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 908                 clear_bit(STATUS_SCANNING, &priv->status);
 909                 return 0;
 910         }
 911
 912         if (test_bit(STATUS_SCANNING, &priv->status)) {
 913                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
 914                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
 915                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
 916                         queue_work(priv->workqueue, &priv->abort_scan);
 917
 918                 } else
 919                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
 920
 921                 return test_bit(STATUS_SCANNING, &priv->status);
 922         }
 923
 924         return 0;
 925 }
 926
 927 /**
 928  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
 929  * @ms: amount of time to wait (in milliseconds) for scan to abort
 930  *
 931  * NOTE: priv->mutex must be held before calling this function
 932  */
 933 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
 934 {
 935         unsigned long now = jiffies;
 936         int ret;
 937
 938         ret = iwl4965_scan_cancel(priv);
 939         if (ret && ms) {
 940                 mutex_unlock(&priv->mutex);
 941                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
 942                                 test_bit(STATUS_SCANNING, &priv->status))
 943                         msleep(1);
 944                 mutex_lock(&priv->mutex);
 945
 946                 return test_bit(STATUS_SCANNING, &priv->status);
 947         }
 948
 949         return ret;
 950 }
 951
 952 static void iwl4965_sequence_reset(struct iwl_priv *priv)
 953 {
 954         /* Reset ieee stats */
 955
 956         /* We don't reset the net_device_stats (ieee->stats) on
 957          * re-association */
 958
 959         priv->last_seq_num = -1;
 960         priv->last_frag_num = -1;
 961         priv->last_packet_time = 0;
 962
 963         iwl4965_scan_cancel(priv);
 964 }
 965
 966 #define MAX_UCODE_BEACON_INTERVAL       4096
 967 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 968
 969 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 970 {
 971         u16 new_val = 0;
 972         u16 beacon_factor = 0;
 973
 974         beacon_factor =
 975             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 976                 / MAX_UCODE_BEACON_INTERVAL;
 977         new_val = beacon_val / beacon_factor;
 978
 979         return cpu_to_le16(new_val);
 980 }
 981
 982 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 983 {
 984         u64 interval_tm_unit;
 985         u64 tsf, result;
 986         unsigned long flags;
 987         struct ieee80211_conf *conf = NULL;
 988         u16 beacon_int = 0;
 989
 990         conf = ieee80211_get_hw_conf(priv->hw);
 991
 992         spin_lock_irqsave(&priv->lock, flags);
 993         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 994         priv->rxon_timing.timestamp.dw[0] =
 995                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 996
 997         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 998
 999         tsf = priv->timestamp;
1000
1001         beacon_int = priv->beacon_int;
1002         spin_unlock_irqrestore(&priv->lock, flags);
1003
1004         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1005                 if (beacon_int == 0) {
1006                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1007                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1008                 } else {
1009                         priv->rxon_timing.beacon_interval =
1010                                 cpu_to_le16(beacon_int);
1011                         priv->rxon_timing.beacon_interval =
1012                             iwl4965_adjust_beacon_interval(
1013                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1014                 }
1015
1016                 priv->rxon_timing.atim_window = 0;
1017         } else {
1018                 priv->rxon_timing.beacon_interval =
1019                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1020                 /* TODO: we need to get atim_window from upper stack
1021                  * for now we set to 0 */
1022                 priv->rxon_timing.atim_window = 0;
1023         }
1024
1025         interval_tm_unit =
1026                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1027         result = do_div(tsf, interval_tm_unit);
1028         priv->rxon_timing.beacon_init_val =
1029             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1030
1031         IWL_DEBUG_ASSOC
1032             ("beacon interval %d beacon timer %d beacon tim %d\n",
1033                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1034                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1035                 le16_to_cpu(priv->rxon_timing.atim_window));
1036 }
1037
1038 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1039 {
1040         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1041                 IWL_ERROR("APs don't scan.\n");
1042                 return 0;
1043         }
1044
1045         if (!iwl_is_ready_rf(priv)) {
1046                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1047                 return -EIO;
1048         }
1049
1050         if (test_bit(STATUS_SCANNING, &priv->status)) {
1051                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1052                 return -EAGAIN;
1053         }
1054
1055         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1056                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1057                                "Queuing.\n");
1058                 return -EAGAIN;
1059         }
1060
1061         IWL_DEBUG_INFO("Starting scan...\n");
1062         priv->scan_bands = 2;
1063         set_bit(STATUS_SCANNING, &priv->status);
1064         priv->scan_start = jiffies;
1065         priv->scan_pass_start = priv->scan_start;
1066
1067         queue_work(priv->workqueue, &priv->request_scan);
1068
1069         return 0;
1070 }
1071
1072
1073 static void iwl_set_flags_for_band(struct iwl_priv *priv,
1074                                    enum ieee80211_band band)
1075 {
1076         if (band == IEEE80211_BAND_5GHZ) {
1077                 priv->staging_rxon.flags &=
1078                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1079                       | RXON_FLG_CCK_MSK);
1080                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1081         } else {
1082                 /* Copied from iwl4965_post_associate() */
1083                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1084                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1085                 else
1086                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1087
1088                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1089                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1090
1091                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1092                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1093                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1094         }
1095 }
1096
1097 /*
1098  * initialize rxon structure with default values from eeprom
1099  */
1100 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1101 {
1102         const struct iwl_channel_info *ch_info;
1103
1104         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1105
1106         switch (priv->iw_mode) {
1107         case IEEE80211_IF_TYPE_AP:
1108                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1109                 break;
1110
1111         case IEEE80211_IF_TYPE_STA:
1112                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1113                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1114                 break;
1115
1116         case IEEE80211_IF_TYPE_IBSS:
1117                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1118                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1119                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1120                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1121                 break;
1122
1123         case IEEE80211_IF_TYPE_MNTR:
1124                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1125                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1126                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1127                 break;
1128         default:
1129                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1130                 break;
1131         }
1132
1133 #if 0
1134         /* TODO:  Figure out when short_preamble would be set and cache from
1135          * that */
1136         if (!hw_to_local(priv->hw)->short_preamble)
1137                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1138         else
1139                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1140 #endif
1141
1142         ch_info = iwl_get_channel_info(priv, priv->band,
1143                                        le16_to_cpu(priv->staging_rxon.channel));
1144
1145         if (!ch_info)
1146                 ch_info = &priv->channel_info[0];
1147
1148         /*
1149          * in some case A channels are all non IBSS
1150          * in this case force B/G channel
1151          */
1152         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1153             !(is_channel_ibss(ch_info)))
1154                 ch_info = &priv->channel_info[0];
1155
1156         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1157         priv->band = ch_info->band;
1158
1159         iwl_set_flags_for_band(priv, priv->band);
1160
1161         priv->staging_rxon.ofdm_basic_rates =
1162             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1163         priv->staging_rxon.cck_basic_rates =
1164             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1165
1166         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1167                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1168         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1169         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1170         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1171         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1172         iwl_set_rxon_chain(priv);
1173 }
1174
1175 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1176 {
1177         if (mode == IEEE80211_IF_TYPE_IBSS) {
1178                 const struct iwl_channel_info *ch_info;
1179
1180                 ch_info = iwl_get_channel_info(priv,
1181                         priv->band,
1182                         le16_to_cpu(priv->staging_rxon.channel));
1183
1184                 if (!ch_info || !is_channel_ibss(ch_info)) {
1185                         IWL_ERROR("channel %d not IBSS channel\n",
1186                                   le16_to_cpu(priv->staging_rxon.channel));
1187                         return -EINVAL;
1188                 }
1189         }
1190
1191         priv->iw_mode = mode;
1192
1193         iwl4965_connection_init_rx_config(priv);
1194         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1195
1196         iwlcore_clear_stations_table(priv);
1197
1198         /* dont commit rxon if rf-kill is on*/
1199         if (!iwl_is_ready_rf(priv))
1200                 return -EAGAIN;
1201
1202         cancel_delayed_work(&priv->scan_check);
1203         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1204                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1205                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1206                 return -EAGAIN;
1207         }
1208
1209         iwl4965_commit_rxon(priv);
1210
1211         return 0;
1212 }
1213
1214 static void iwl4965_set_rate(struct iwl_priv *priv)
1215 {
1216         const struct ieee80211_supported_band *hw = NULL;
1217         struct ieee80211_rate *rate;
1218         int i;
1219
1220         hw = iwl_get_hw_mode(priv, priv->band);
1221         if (!hw) {
1222                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1223                 return;
1224         }
1225
1226         priv->active_rate = 0;
1227         priv->active_rate_basic = 0;
1228
1229         for (i = 0; i < hw->n_bitrates; i++) {
1230                 rate = &(hw->bitrates[i]);
1231                 if (rate->hw_value < IWL_RATE_COUNT)
1232                         priv->active_rate |= (1 << rate->hw_value);
1233         }
1234
1235         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1236                        priv->active_rate, priv->active_rate_basic);
1237
1238         /*
1239          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1240          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1241          * OFDM
1242          */
1243         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1244                 priv->staging_rxon.cck_basic_rates =
1245                     ((priv->active_rate_basic &
1246                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1247         else
1248                 priv->staging_rxon.cck_basic_rates =
1249                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1250
1251         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1252                 priv->staging_rxon.ofdm_basic_rates =
1253                     ((priv->active_rate_basic &
1254                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1255                       IWL_FIRST_OFDM_RATE) & 0xFF;
1256         else
1257                 priv->staging_rxon.ofdm_basic_rates =
1258                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1259 }
1260
1261 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1262 {
1263         unsigned long flags;
1264
1265         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1266                 return;
1267
1268         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1269                           disable_radio ? "OFF" : "ON");
1270
1271         if (disable_radio) {
1272                 iwl4965_scan_cancel(priv);
1273                 /* FIXME: This is a workaround for AP */
1274                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1275                         spin_lock_irqsave(&priv->lock, flags);
1276                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1277                                     CSR_UCODE_SW_BIT_RFKILL);
1278                         spin_unlock_irqrestore(&priv->lock, flags);
1279                         /* call the host command only if no hw rf-kill set */
1280                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1281                             iwl_is_ready(priv))
1282                                 iwl4965_send_card_state(priv,
1283                                                         CARD_STATE_CMD_DISABLE,
1284                                                         0);
1285                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1286
1287                         /* make sure mac80211 stop sending Tx frame */
1288                         if (priv->mac80211_registered)
1289                                 ieee80211_stop_queues(priv->hw);
1290                 }
1291                 return;
1292         }
1293
1294         spin_lock_irqsave(&priv->lock, flags);
1295         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1296
1297         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1298         spin_unlock_irqrestore(&priv->lock, flags);
1299
1300         /* wake up ucode */
1301         msleep(10);
1302
1303         spin_lock_irqsave(&priv->lock, flags);
1304         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1305         if (!iwl_grab_nic_access(priv))
1306                 iwl_release_nic_access(priv);
1307         spin_unlock_irqrestore(&priv->lock, flags);
1308
1309         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1310                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1311                                   "disabled by HW switch\n");
1312                 return;
1313         }
1314
1315         queue_work(priv->workqueue, &priv->restart);
1316         return;
1317 }
1318
1319 #define IWL_PACKET_RETRY_TIME HZ
1320
1321 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1322 {
1323         u16 sc = le16_to_cpu(header->seq_ctrl);
1324         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1325         u16 frag = sc & IEEE80211_SCTL_FRAG;
1326         u16 *last_seq, *last_frag;
1327         unsigned long *last_time;
1328
1329         switch (priv->iw_mode) {
1330         case IEEE80211_IF_TYPE_IBSS:{
1331                 struct list_head *p;
1332                 struct iwl4965_ibss_seq *entry = NULL;
1333                 u8 *mac = header->addr2;
1334                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1335
1336                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1337                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
1338                         if (!compare_ether_addr(entry->mac, mac))
1339                                 break;
1340                 }
1341                 if (p == &priv->ibss_mac_hash[index]) {
1342                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1343                         if (!entry) {
1344                                 IWL_ERROR("Cannot malloc new mac entry\n");
1345                                 return 0;
1346                         }
1347                         memcpy(entry->mac, mac, ETH_ALEN);
1348                         entry->seq_num = seq;
1349                         entry->frag_num = frag;
1350                         entry->packet_time = jiffies;
1351                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1352                         return 0;
1353                 }
1354                 last_seq = &entry->seq_num;
1355                 last_frag = &entry->frag_num;
1356                 last_time = &entry->packet_time;
1357                 break;
1358         }
1359         case IEEE80211_IF_TYPE_STA:
1360                 last_seq = &priv->last_seq_num;
1361                 last_frag = &priv->last_frag_num;
1362                 last_time = &priv->last_packet_time;
1363                 break;
1364         default:
1365                 return 0;
1366         }
1367         if ((*last_seq == seq) &&
1368             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1369                 if (*last_frag == frag)
1370                         goto drop;
1371                 if (*last_frag + 1 != frag)
1372                         /* out-of-order fragment */
1373                         goto drop;
1374         } else
1375                 *last_seq = seq;
1376
1377         *last_frag = frag;
1378         *last_time = jiffies;
1379         return 0;
1380
1381  drop:
1382         return 1;
1383 }
1384
1385 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1386
1387 #include "iwl-spectrum.h"
1388
1389 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1390 #define BEACON_TIME_MASK_HIGH   0xFF000000
1391 #define TIME_UNIT               1024
1392
1393 /*
1394  * extended beacon time format
1395  * time in usec will be changed into a 32-bit value in 8:24 format
1396  * the high 1 byte is the beacon counts
1397  * the lower 3 bytes is the time in usec within one beacon interval
1398  */
1399
1400 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1401 {
1402         u32 quot;
1403         u32 rem;
1404         u32 interval = beacon_interval * 1024;
1405
1406         if (!interval || !usec)
1407                 return 0;
1408
1409         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1410         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1411
1412         return (quot << 24) + rem;
1413 }
1414
1415 /* base is usually what we get from ucode with each received frame,
1416  * the same as HW timer counter counting down
1417  */
1418
1419 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1420 {
1421         u32 base_low = base & BEACON_TIME_MASK_LOW;
1422         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1423         u32 interval = beacon_interval * TIME_UNIT;
1424         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1425             (addon & BEACON_TIME_MASK_HIGH);
1426
1427         if (base_low > addon_low)
1428                 res += base_low - addon_low;
1429         else if (base_low < addon_low) {
1430                 res += interval + base_low - addon_low;
1431                 res += (1 << 24);
1432         } else
1433                 res += (1 << 24);
1434
1435         return cpu_to_le32(res);
1436 }
1437
1438 static int iwl4965_get_measurement(struct iwl_priv *priv,
1439                                struct ieee80211_measurement_params *params,
1440                                u8 type)
1441 {
1442         struct iwl4965_spectrum_cmd spectrum;
1443         struct iwl_rx_packet *res;
1444         struct iwl_host_cmd cmd = {
1445                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1446                 .data = (void *)&spectrum,
1447                 .meta.flags = CMD_WANT_SKB,
1448         };
1449         u32 add_time = le64_to_cpu(params->start_time);
1450         int rc;
1451         int spectrum_resp_status;
1452         int duration = le16_to_cpu(params->duration);
1453
1454         if (iwl_is_associated(priv))
1455                 add_time =
1456                     iwl4965_usecs_to_beacons(
1457                         le64_to_cpu(params->start_time) - priv->last_tsf,
1458                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1459
1460         memset(&spectrum, 0, sizeof(spectrum));
1461
1462         spectrum.channel_count = cpu_to_le16(1);
1463         spectrum.flags =
1464             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1465         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1466         cmd.len = sizeof(spectrum);
1467         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1468
1469         if (iwl_is_associated(priv))
1470                 spectrum.start_time =
1471                     iwl4965_add_beacon_time(priv->last_beacon_time,
1472                                 add_time,
1473                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1474         else
1475                 spectrum.start_time = 0;
1476
1477         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1478         spectrum.channels[0].channel = params->channel;
1479         spectrum.channels[0].type = type;
1480         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1481                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1482                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1483
1484         rc = iwl_send_cmd_sync(priv, &cmd);
1485         if (rc)
1486                 return rc;
1487
1488         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1489         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1490                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1491                 rc = -EIO;
1492         }
1493
1494         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1495         switch (spectrum_resp_status) {
1496         case 0:         /* Command will be handled */
1497                 if (res->u.spectrum.id != 0xff) {
1498                         IWL_DEBUG_INFO
1499                             ("Replaced existing measurement: %d\n",
1500                              res->u.spectrum.id);
1501                         priv->measurement_status &= ~MEASUREMENT_READY;
1502                 }
1503                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1504                 rc = 0;
1505                 break;
1506
1507         case 1:         /* Command will not be handled */
1508                 rc = -EAGAIN;
1509                 break;
1510         }
1511
1512         dev_kfree_skb_any(cmd.meta.u.skb);
1513
1514         return rc;
1515 }
1516 #endif
1517
1518 /******************************************************************************
1519  *
1520  * Generic RX handler implementations
1521  *
1522  ******************************************************************************/
1523 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1524                                 struct iwl_rx_mem_buffer *rxb)
1525 {
1526         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1527         struct iwl_alive_resp *palive;
1528         struct delayed_work *pwork;
1529
1530         palive = &pkt->u.alive_frame;
1531
1532         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1533                        "0x%01X 0x%01X\n",
1534                        palive->is_valid, palive->ver_type,
1535                        palive->ver_subtype);
1536
1537         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1538                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1539                 memcpy(&priv->card_alive_init,
1540                        &pkt->u.alive_frame,
1541                        sizeof(struct iwl_init_alive_resp));
1542                 pwork = &priv->init_alive_start;
1543         } else {
1544                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1545                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1546                        sizeof(struct iwl_alive_resp));
1547                 pwork = &priv->alive_start;
1548         }
1549
1550         /* We delay the ALIVE response by 5ms to
1551          * give the HW RF Kill time to activate... */
1552         if (palive->is_valid == UCODE_VALID_OK)
1553                 queue_delayed_work(priv->workqueue, pwork,
1554                                    msecs_to_jiffies(5));
1555         else
1556                 IWL_WARNING("uCode did not respond OK.\n");
1557 }
1558
1559 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1560                                    struct iwl_rx_mem_buffer *rxb)
1561 {
1562         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1563
1564         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1565                 "seq 0x%04X ser 0x%08X\n",
1566                 le32_to_cpu(pkt->u.err_resp.error_type),
1567                 get_cmd_string(pkt->u.err_resp.cmd_id),
1568                 pkt->u.err_resp.cmd_id,
1569                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1570                 le32_to_cpu(pkt->u.err_resp.error_info));
1571 }
1572
1573 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1574
1575 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1576 {
1577         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1578         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1579         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1580         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1581                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1582         rxon->channel = csa->channel;
1583         priv->staging_rxon.channel = csa->channel;
1584 }
1585
1586 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1587                                           struct iwl_rx_mem_buffer *rxb)
1588 {
1589 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1590         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1591         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1592
1593         if (!report->state) {
1594                 IWL_DEBUG(IWL_DL_11H,
1595                         "Spectrum Measure Notification: Start\n");
1596                 return;
1597         }
1598
1599         memcpy(&priv->measure_report, report, sizeof(*report));
1600         priv->measurement_status |= MEASUREMENT_READY;
1601 #endif
1602 }
1603
1604 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1605                                       struct iwl_rx_mem_buffer *rxb)
1606 {
1607 #ifdef CONFIG_IWLWIFI_DEBUG
1608         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1609         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1610         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1611                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1612 #endif
1613 }
1614
1615 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1616                                              struct iwl_rx_mem_buffer *rxb)
1617 {
1618         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1619         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1620                         "notification for %s:\n",
1621                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1622         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1623 }
1624
1625 static void iwl4965_bg_beacon_update(struct work_struct *work)
1626 {
1627         struct iwl_priv *priv =
1628                 container_of(work, struct iwl_priv, beacon_update);
1629         struct sk_buff *beacon;
1630
1631         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1632         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1633
1634         if (!beacon) {
1635                 IWL_ERROR("update beacon failed\n");
1636                 return;
1637         }
1638
1639         mutex_lock(&priv->mutex);
1640         /* new beacon skb is allocated every time; dispose previous.*/
1641         if (priv->ibss_beacon)
1642                 dev_kfree_skb(priv->ibss_beacon);
1643
1644         priv->ibss_beacon = beacon;
1645         mutex_unlock(&priv->mutex);
1646
1647         iwl4965_send_beacon_cmd(priv);
1648 }
1649
1650 /**
1651  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1652  *
1653  * This callback is provided in order to send a statistics request.
1654  *
1655  * This timer function is continually reset to execute within
1656  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1657  * was received.  We need to ensure we receive the statistics in order
1658  * to update the temperature used for calibrating the TXPOWER.
1659  */
1660 static void iwl4965_bg_statistics_periodic(unsigned long data)
1661 {
1662         struct iwl_priv *priv = (struct iwl_priv *)data;
1663
1664         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1665                 return;
1666
1667         iwl_send_statistics_request(priv, CMD_ASYNC);
1668 }
1669
1670 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1671                                 struct iwl_rx_mem_buffer *rxb)
1672 {
1673 #ifdef CONFIG_IWLWIFI_DEBUG
1674         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1675         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1676         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1677
1678         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1679                 "tsf %d %d rate %d\n",
1680                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1681                 beacon->beacon_notify_hdr.failure_frame,
1682                 le32_to_cpu(beacon->ibss_mgr_status),
1683                 le32_to_cpu(beacon->high_tsf),
1684                 le32_to_cpu(beacon->low_tsf), rate);
1685 #endif
1686
1687         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1688             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1689                 queue_work(priv->workqueue, &priv->beacon_update);
1690 }
1691
1692 /* Service response to REPLY_SCAN_CMD (0x80) */
1693 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
1694                               struct iwl_rx_mem_buffer *rxb)
1695 {
1696 #ifdef CONFIG_IWLWIFI_DEBUG
1697         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1698         struct iwl4965_scanreq_notification *notif =
1699             (struct iwl4965_scanreq_notification *)pkt->u.raw;
1700
1701         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1702 #endif
1703 }
1704
1705 /* Service SCAN_START_NOTIFICATION (0x82) */
1706 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
1707                                     struct iwl_rx_mem_buffer *rxb)
1708 {
1709         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1710         struct iwl4965_scanstart_notification *notif =
1711             (struct iwl4965_scanstart_notification *)pkt->u.raw;
1712         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1713         IWL_DEBUG_SCAN("Scan start: "
1714                        "%d [802.11%s] "
1715                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1716                        notif->channel,
1717                        notif->band ? "bg" : "a",
1718                        notif->tsf_high,
1719                        notif->tsf_low, notif->status, notif->beacon_timer);
1720 }
1721
1722 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1723 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
1724                                       struct iwl_rx_mem_buffer *rxb)
1725 {
1726         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1727         struct iwl4965_scanresults_notification *notif =
1728             (struct iwl4965_scanresults_notification *)pkt->u.raw;
1729
1730         IWL_DEBUG_SCAN("Scan ch.res: "
1731                        "%d [802.11%s] "
1732                        "(TSF: 0x%08X:%08X) - %d "
1733                        "elapsed=%lu usec (%dms since last)\n",
1734                        notif->channel,
1735                        notif->band ? "bg" : "a",
1736                        le32_to_cpu(notif->tsf_high),
1737                        le32_to_cpu(notif->tsf_low),
1738                        le32_to_cpu(notif->statistics[0]),
1739                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1740                        jiffies_to_msecs(elapsed_jiffies
1741                                         (priv->last_scan_jiffies, jiffies)));
1742
1743         priv->last_scan_jiffies = jiffies;
1744         priv->next_scan_jiffies = 0;
1745 }
1746
1747 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1748 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
1749                                        struct iwl_rx_mem_buffer *rxb)
1750 {
1751         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1752         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1753
1754         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1755                        scan_notif->scanned_channels,
1756                        scan_notif->tsf_low,
1757                        scan_notif->tsf_high, scan_notif->status);
1758
1759         /* The HW is no longer scanning */
1760         clear_bit(STATUS_SCAN_HW, &priv->status);
1761
1762         /* The scan completion notification came in, so kill that timer... */
1763         cancel_delayed_work(&priv->scan_check);
1764
1765         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1766                        (priv->scan_bands == 2) ? "2.4" : "5.2",
1767                        jiffies_to_msecs(elapsed_jiffies
1768                                         (priv->scan_pass_start, jiffies)));
1769
1770         /* Remove this scanned band from the list
1771          * of pending bands to scan */
1772         priv->scan_bands--;
1773
1774         /* If a request to abort was given, or the scan did not succeed
1775          * then we reset the scan state machine and terminate,
1776          * re-queuing another scan if one has been requested */
1777         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1778                 IWL_DEBUG_INFO("Aborted scan completed.\n");
1779                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1780         } else {
1781                 /* If there are more bands on this scan pass reschedule */
1782                 if (priv->scan_bands > 0)
1783                         goto reschedule;
1784         }
1785
1786         priv->last_scan_jiffies = jiffies;
1787         priv->next_scan_jiffies = 0;
1788         IWL_DEBUG_INFO("Setting scan to off\n");
1789
1790         clear_bit(STATUS_SCANNING, &priv->status);
1791
1792         IWL_DEBUG_INFO("Scan took %dms\n",
1793                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1794
1795         queue_work(priv->workqueue, &priv->scan_completed);
1796
1797         return;
1798
1799 reschedule:
1800         priv->scan_pass_start = jiffies;
1801         queue_work(priv->workqueue, &priv->request_scan);
1802 }
1803
1804 /* Handle notification from uCode that card's power state is changing
1805  * due to software, hardware, or critical temperature RFKILL */
1806 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1807                                     struct iwl_rx_mem_buffer *rxb)
1808 {
1809         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1810         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1811         unsigned long status = priv->status;
1812
1813         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1814                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1815                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1816
1817         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1818                      RF_CARD_DISABLED)) {
1819
1820                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1821                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1822
1823                 if (!iwl_grab_nic_access(priv)) {
1824                         iwl_write_direct32(
1825                                 priv, HBUS_TARG_MBX_C,
1826                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1827
1828                         iwl_release_nic_access(priv);
1829                 }
1830
1831                 if (!(flags & RXON_CARD_DISABLED)) {
1832                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1833                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1834                         if (!iwl_grab_nic_access(priv)) {
1835                                 iwl_write_direct32(
1836                                         priv, HBUS_TARG_MBX_C,
1837                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1838
1839                                 iwl_release_nic_access(priv);
1840                         }
1841                 }
1842
1843                 if (flags & RF_CARD_DISABLED) {
1844                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1845                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1846                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1847                         if (!iwl_grab_nic_access(priv))
1848                                 iwl_release_nic_access(priv);
1849                 }
1850         }
1851
1852         if (flags & HW_CARD_DISABLED)
1853                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1854         else
1855                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1856
1857
1858         if (flags & SW_CARD_DISABLED)
1859                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1860         else
1861                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1862
1863         if (!(flags & RXON_CARD_DISABLED))
1864                 iwl4965_scan_cancel(priv);
1865
1866         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1867              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1868             (test_bit(STATUS_RF_KILL_SW, &status) !=
1869              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1870                 queue_work(priv->workqueue, &priv->rf_kill);
1871         else
1872                 wake_up_interruptible(&priv->wait_command_queue);
1873 }
1874
1875 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1876  * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1877 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1878                                     struct iwl_rx_mem_buffer *rxb)
1879 {
1880         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1881         priv->last_phy_res[0] = 1;
1882         memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1883                sizeof(struct iwl4965_rx_phy_res));
1884 }
1885
1886 /**
1887  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1888  *
1889  * Setup the RX handlers for each of the reply types sent from the uCode
1890  * to the host.
1891  *
1892  * This function chains into the hardware specific files for them to setup
1893  * any hardware specific handlers as well.
1894  */
1895 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1896 {
1897         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1898         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1899         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1900         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1901             iwl4965_rx_spectrum_measure_notif;
1902         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1903         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1904             iwl4965_rx_pm_debug_statistics_notif;
1905         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1906
1907         /*
1908          * The same handler is used for both the REPLY to a discrete
1909          * statistics request from the host as well as for the periodic
1910          * statistics notifications (after received beacons) from the uCode.
1911          */
1912         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1913         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1914         /* scan handlers */
1915         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
1916         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
1917         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1918             iwl4965_rx_scan_results_notif;
1919         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1920             iwl4965_rx_scan_complete_notif;
1921         /* status change handler */
1922         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1923
1924         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1925             iwl_rx_missed_beacon_notif;
1926         /* Rx handlers */
1927         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1928         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
1929         /* Set up hardware specific Rx handlers */
1930         priv->cfg->ops->lib->rx_handler_setup(priv);
1931 }
1932
1933 /*
1934  * this should be called while priv->lock is locked
1935 */
1936 static void __iwl_rx_replenish(struct iwl_priv *priv)
1937 {
1938         iwl_rx_allocate(priv);
1939         iwl_rx_queue_restock(priv);
1940 }
1941
1942
1943 /**
1944  * iwl_rx_handle - Main entry function for receiving responses from uCode
1945  *
1946  * Uses the priv->rx_handlers callback function array to invoke
1947  * the appropriate handlers, including command responses,
1948  * frame-received notifications, and other notifications.
1949  */
1950 void iwl_rx_handle(struct iwl_priv *priv)
1951 {
1952         struct iwl_rx_mem_buffer *rxb;
1953         struct iwl_rx_packet *pkt;
1954         struct iwl_rx_queue *rxq = &priv->rxq;
1955         u32 r, i;
1956         int reclaim;
1957         unsigned long flags;
1958         u8 fill_rx = 0;
1959         u32 count = 8;
1960
1961         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1962          * buffer that the driver may process (last buffer filled by ucode). */
1963         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1964         i = rxq->read;
1965
1966         /* Rx interrupt, but nothing sent from uCode */
1967         if (i == r)
1968                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1969
1970         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1971                 fill_rx = 1;
1972
1973         while (i != r) {
1974                 rxb = rxq->queue[i];
1975
1976                 /* If an RXB doesn't have a Rx queue slot associated with it,
1977                  * then a bug has been introduced in the queue refilling
1978                  * routines -- catch it here */
1979                 BUG_ON(rxb == NULL);
1980
1981                 rxq->queue[i] = NULL;
1982
1983                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1984                                             priv->hw_params.rx_buf_size,
1985                                             PCI_DMA_FROMDEVICE);
1986                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1987
1988                 /* Reclaim a command buffer only if this packet is a response
1989                  *   to a (driver-originated) command.
1990                  * If the packet (e.g. Rx frame) originated from uCode,
1991                  *   there is no command buffer to reclaim.
1992                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1993                  *   but apparently a few don't get set; catch them here. */
1994                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1995                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1996                         (pkt->hdr.cmd != REPLY_RX) &&
1997                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1998                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1999                         (pkt->hdr.cmd != REPLY_TX);
2000
2001                 /* Based on type of command response or notification,
2002                  *   handle those that need handling via function in
2003                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
2004                 if (priv->rx_handlers[pkt->hdr.cmd]) {
2005                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2006                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2007                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2008                 } else {
2009                         /* No handling needed */
2010                         IWL_DEBUG(IWL_DL_RX,
2011                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2012                                 r, i, get_cmd_string(pkt->hdr.cmd),
2013                                 pkt->hdr.cmd);
2014                 }
2015
2016                 if (reclaim) {
2017                         /* Invoke any callbacks, transfer the skb to caller, and
2018                          * fire off the (possibly) blocking iwl_send_cmd()
2019                          * as we reclaim the driver command queue */
2020                         if (rxb && rxb->skb)
2021                                 iwl_tx_cmd_complete(priv, rxb);
2022                         else
2023                                 IWL_WARNING("Claim null rxb?\n");
2024                 }
2025
2026                 /* For now we just don't re-use anything.  We can tweak this
2027                  * later to try and re-use notification packets and SKBs that
2028                  * fail to Rx correctly */
2029                 if (rxb->skb != NULL) {
2030                         priv->alloc_rxb_skb--;
2031                         dev_kfree_skb_any(rxb->skb);
2032                         rxb->skb = NULL;
2033                 }
2034
2035                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2036                                  priv->hw_params.rx_buf_size,
2037                                  PCI_DMA_FROMDEVICE);
2038                 spin_lock_irqsave(&rxq->lock, flags);
2039                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2040                 spin_unlock_irqrestore(&rxq->lock, flags);
2041                 i = (i + 1) & RX_QUEUE_MASK;
2042                 /* If there are a lot of unused frames,
2043                  * restock the Rx queue so ucode wont assert. */
2044                 if (fill_rx) {
2045                         count++;
2046                         if (count >= 8) {
2047                                 priv->rxq.read = i;
2048                                 __iwl_rx_replenish(priv);
2049                                 count = 0;
2050                         }
2051                 }
2052         }
2053
2054         /* Backtrack one entry */
2055         priv->rxq.read = i;
2056         iwl_rx_queue_restock(priv);
2057 }
2058 /* Convert linear signal-to-noise ratio into dB */
2059 static u8 ratio2dB[100] = {
2060 /*       0   1   2   3   4   5   6   7   8   9 */
2061          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2062         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2063         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2064         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2065         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2066         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2067         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2068         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2069         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2070         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2071 };
2072
2073 /* Calculates a relative dB value from a ratio of linear
2074  *   (i.e. not dB) signal levels.
2075  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2076 int iwl4965_calc_db_from_ratio(int sig_ratio)
2077 {
2078         /* 1000:1 or higher just report as 60 dB */
2079         if (sig_ratio >= 1000)
2080                 return 60;
2081
2082         /* 100:1 or higher, divide by 10 and use table,
2083          *   add 20 dB to make up for divide by 10 */
2084         if (sig_ratio >= 100)
2085                 return (20 + (int)ratio2dB[sig_ratio/10]);
2086
2087         /* We shouldn't see this */
2088         if (sig_ratio < 1)
2089                 return 0;
2090
2091         /* Use table for ratios 1:1 - 99:1 */
2092         return (int)ratio2dB[sig_ratio];
2093 }
2094
2095 #define PERFECT_RSSI (-20) /* dBm */
2096 #define WORST_RSSI (-95)   /* dBm */
2097 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2098
2099 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2100  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2101  *   about formulas used below. */
2102 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2103 {
2104         int sig_qual;
2105         int degradation = PERFECT_RSSI - rssi_dbm;
2106
2107         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2108          * as indicator; formula is (signal dbm - noise dbm).
2109          * SNR at or above 40 is a great signal (100%).
2110          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2111          * Weakest usable signal is usually 10 - 15 dB SNR. */
2112         if (noise_dbm) {
2113                 if (rssi_dbm - noise_dbm >= 40)
2114                         return 100;
2115                 else if (rssi_dbm < noise_dbm)
2116                         return 0;
2117                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2118
2119         /* Else use just the signal level.
2120          * This formula is a least squares fit of data points collected and
2121          *   compared with a reference system that had a percentage (%) display
2122          *   for signal quality. */
2123         } else
2124                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2125                             (15 * RSSI_RANGE + 62 * degradation)) /
2126                            (RSSI_RANGE * RSSI_RANGE);
2127
2128         if (sig_qual > 100)
2129                 sig_qual = 100;
2130         else if (sig_qual < 1)
2131                 sig_qual = 0;
2132
2133         return sig_qual;
2134 }
2135
2136 #ifdef CONFIG_IWLWIFI_DEBUG
2137 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2138 {
2139         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2140         DECLARE_MAC_BUF(mac);
2141
2142         IWL_DEBUG_RADIO("RX CONFIG:\n");
2143         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2144         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2145         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2146         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2147                         le32_to_cpu(rxon->filter_flags));
2148         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2149         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2150                         rxon->ofdm_basic_rates);
2151         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2152         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2153                         print_mac(mac, rxon->node_addr));
2154         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2155                         print_mac(mac, rxon->bssid_addr));
2156         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2157 }
2158 #endif
2159
2160 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2161 {
2162         IWL_DEBUG_ISR("Enabling interrupts\n");
2163         set_bit(STATUS_INT_ENABLED, &priv->status);
2164         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2165 }
2166
2167 /* call this function to flush any scheduled tasklet */
2168 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2169 {
2170         /* wait to make sure we flush pedding tasklet*/
2171         synchronize_irq(priv->pci_dev->irq);
2172         tasklet_kill(&priv->irq_tasklet);
2173 }
2174
2175 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2176 {
2177         clear_bit(STATUS_INT_ENABLED, &priv->status);
2178
2179         /* disable interrupts from uCode/NIC to host */
2180         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2181
2182         /* acknowledge/clear/reset any interrupts still pending
2183          * from uCode or flow handler (Rx/Tx DMA) */
2184         iwl_write32(priv, CSR_INT, 0xffffffff);
2185         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2186         IWL_DEBUG_ISR("Disabled interrupts\n");
2187 }
2188
2189
2190 /**
2191  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2192  */
2193 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2194 {
2195         /* Set the FW error flag -- cleared on iwl4965_down */
2196         set_bit(STATUS_FW_ERROR, &priv->status);
2197
2198         /* Cancel currently queued command. */
2199         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2200
2201 #ifdef CONFIG_IWLWIFI_DEBUG
2202         if (priv->debug_level & IWL_DL_FW_ERRORS) {
2203                 iwl_dump_nic_error_log(priv);
2204                 iwl_dump_nic_event_log(priv);
2205                 iwl4965_print_rx_config_cmd(priv);
2206         }
2207 #endif
2208
2209         wake_up_interruptible(&priv->wait_command_queue);
2210
2211         /* Keep the restart process from trying to send host
2212          * commands by clearing the INIT status bit */
2213         clear_bit(STATUS_READY, &priv->status);
2214
2215         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2216                 IWL_DEBUG(IWL_DL_FW_ERRORS,
2217                           "Restarting adapter due to uCode error.\n");
2218
2219                 if (iwl_is_associated(priv)) {
2220                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
2221                                sizeof(priv->recovery_rxon));
2222                         priv->error_recovering = 1;
2223                 }
2224                 if (priv->cfg->mod_params->restart_fw)
2225                         queue_work(priv->workqueue, &priv->restart);
2226         }
2227 }
2228
2229 static void iwl4965_error_recovery(struct iwl_priv *priv)
2230 {
2231         unsigned long flags;
2232
2233         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2234                sizeof(priv->staging_rxon));
2235         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2236         iwl4965_commit_rxon(priv);
2237
2238         iwl_rxon_add_station(priv, priv->bssid, 1);
2239
2240         spin_lock_irqsave(&priv->lock, flags);
2241         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2242         priv->error_recovering = 0;
2243         spin_unlock_irqrestore(&priv->lock, flags);
2244 }
2245
2246 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2247 {
2248         u32 inta, handled = 0;
2249         u32 inta_fh;
2250         unsigned long flags;
2251 #ifdef CONFIG_IWLWIFI_DEBUG
2252         u32 inta_mask;
2253 #endif
2254
2255         spin_lock_irqsave(&priv->lock, flags);
2256
2257         /* Ack/clear/reset pending uCode interrupts.
2258          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2259          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2260         inta = iwl_read32(priv, CSR_INT);
2261         iwl_write32(priv, CSR_INT, inta);
2262
2263         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2264          * Any new interrupts that happen after this, either while we're
2265          * in this tasklet, or later, will show up in next ISR/tasklet. */
2266         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2267         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2268
2269 #ifdef CONFIG_IWLWIFI_DEBUG
2270         if (priv->debug_level & IWL_DL_ISR) {
2271                 /* just for debug */
2272                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2273                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2274                               inta, inta_mask, inta_fh);
2275         }
2276 #endif
2277
2278         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2279          * atomic, make sure that inta covers all the interrupts that
2280          * we've discovered, even if FH interrupt came in just after
2281          * reading CSR_INT. */
2282         if (inta_fh & CSR49_FH_INT_RX_MASK)
2283                 inta |= CSR_INT_BIT_FH_RX;
2284         if (inta_fh & CSR49_FH_INT_TX_MASK)
2285                 inta |= CSR_INT_BIT_FH_TX;
2286
2287         /* Now service all interrupt bits discovered above. */
2288         if (inta & CSR_INT_BIT_HW_ERR) {
2289                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
2290
2291                 /* Tell the device to stop sending interrupts */
2292                 iwl4965_disable_interrupts(priv);
2293
2294                 iwl4965_irq_handle_error(priv);
2295
2296                 handled |= CSR_INT_BIT_HW_ERR;
2297
2298                 spin_unlock_irqrestore(&priv->lock, flags);
2299
2300                 return;
2301         }
2302
2303 #ifdef CONFIG_IWLWIFI_DEBUG
2304         if (priv->debug_level & (IWL_DL_ISR)) {
2305                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2306                 if (inta & CSR_INT_BIT_SCD)
2307                         IWL_DEBUG_ISR("Scheduler finished to transmit "
2308                                       "the frame/frames.\n");
2309
2310                 /* Alive notification via Rx interrupt will do the real work */
2311                 if (inta & CSR_INT_BIT_ALIVE)
2312                         IWL_DEBUG_ISR("Alive interrupt\n");
2313         }
2314 #endif
2315         /* Safely ignore these bits for debug checks below */
2316         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2317
2318         /* HW RF KILL switch toggled */
2319         if (inta & CSR_INT_BIT_RF_KILL) {
2320                 int hw_rf_kill = 0;
2321                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2322                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2323                         hw_rf_kill = 1;
2324
2325                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2326                                 hw_rf_kill ? "disable radio":"enable radio");
2327
2328                 /* Queue restart only if RF_KILL switch was set to "kill"
2329                  *   when we loaded driver, and is now set to "enable".
2330                  * After we're Alive, RF_KILL gets handled by
2331                  *   iwl4965_rx_card_state_notif() */
2332                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2333                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2334                         queue_work(priv->workqueue, &priv->restart);
2335                 }
2336
2337                 handled |= CSR_INT_BIT_RF_KILL;
2338         }
2339
2340         /* Chip got too hot and stopped itself */
2341         if (inta & CSR_INT_BIT_CT_KILL) {
2342                 IWL_ERROR("Microcode CT kill error detected.\n");
2343                 handled |= CSR_INT_BIT_CT_KILL;
2344         }
2345
2346         /* Error detected by uCode */
2347         if (inta & CSR_INT_BIT_SW_ERR) {
2348                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
2349                           inta);
2350                 iwl4965_irq_handle_error(priv);
2351                 handled |= CSR_INT_BIT_SW_ERR;
2352         }
2353
2354         /* uCode wakes up after power-down sleep */
2355         if (inta & CSR_INT_BIT_WAKEUP) {
2356                 IWL_DEBUG_ISR("Wakeup interrupt\n");
2357                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2358                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2359                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2360                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2361                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2362                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2363                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2364
2365                 handled |= CSR_INT_BIT_WAKEUP;
2366         }
2367
2368         /* All uCode command responses, including Tx command responses,
2369          * Rx "responses" (frame-received notification), and other
2370          * notifications from uCode come through here*/
2371         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2372                 iwl_rx_handle(priv);
2373                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2374         }
2375
2376         if (inta & CSR_INT_BIT_FH_TX) {
2377                 IWL_DEBUG_ISR("Tx interrupt\n");
2378                 handled |= CSR_INT_BIT_FH_TX;
2379                 /* FH finished to write, send event */
2380                 priv->ucode_write_complete = 1;
2381                 wake_up_interruptible(&priv->wait_command_queue);
2382         }
2383
2384         if (inta & ~handled)
2385                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2386
2387         if (inta & ~CSR_INI_SET_MASK) {
2388                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2389                          inta & ~CSR_INI_SET_MASK);
2390                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
2391         }
2392
2393         /* Re-enable all interrupts */
2394         /* only Re-enable if diabled by irq */
2395         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2396                 iwl4965_enable_interrupts(priv);
2397
2398 #ifdef CONFIG_IWLWIFI_DEBUG
2399         if (priv->debug_level & (IWL_DL_ISR)) {
2400                 inta = iwl_read32(priv, CSR_INT);
2401                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2402                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2403                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2404                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2405         }
2406 #endif
2407         spin_unlock_irqrestore(&priv->lock, flags);
2408 }
2409
2410 static irqreturn_t iwl4965_isr(int irq, void *data)
2411 {
2412         struct iwl_priv *priv = data;
2413         u32 inta, inta_mask;
2414         u32 inta_fh;
2415         if (!priv)
2416                 return IRQ_NONE;
2417
2418         spin_lock(&priv->lock);
2419
2420         /* Disable (but don't clear!) interrupts here to avoid
2421          *    back-to-back ISRs and sporadic interrupts from our NIC.
2422          * If we have something to service, the tasklet will re-enable ints.
2423          * If we *don't* have something, we'll re-enable before leaving here. */
2424         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2425         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2426
2427         /* Discover which interrupts are active/pending */
2428         inta = iwl_read32(priv, CSR_INT);
2429         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2430
2431         /* Ignore interrupt if there's nothing in NIC to service.
2432          * This may be due to IRQ shared with another device,
2433          * or due to sporadic interrupts thrown from our NIC. */
2434         if (!inta && !inta_fh) {
2435                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2436                 goto none;
2437         }
2438
2439         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2440                 /* Hardware disappeared. It might have already raised
2441                  * an interrupt */
2442                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2443                 goto unplugged;
2444         }
2445
2446         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2447                       inta, inta_mask, inta_fh);
2448
2449         inta &= ~CSR_INT_BIT_SCD;
2450
2451         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2452         if (likely(inta || inta_fh))
2453                 tasklet_schedule(&priv->irq_tasklet);
2454
2455  unplugged:
2456         spin_unlock(&priv->lock);
2457         return IRQ_HANDLED;
2458
2459  none:
2460         /* re-enable interrupts here since we don't have anything to service. */
2461         /* only Re-enable if diabled by irq */
2462         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2463                 iwl4965_enable_interrupts(priv);
2464         spin_unlock(&priv->lock);
2465         return IRQ_NONE;
2466 }
2467
2468 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2469  * sending probe req.  This should be set long enough to hear probe responses
2470  * from more than one AP.  */
2471 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
2472 #define IWL_ACTIVE_DWELL_TIME_52    (10)
2473
2474 /* For faster active scanning, scan will move to the next channel if fewer than
2475  * PLCP_QUIET_THRESH packets are heard on this channel within
2476  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
2477  * time if it's a quiet channel (nothing responded to our probe, and there's
2478  * no other traffic).
2479  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2480 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
2481 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
2482
2483 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2484  * Must be set longer than active dwell time.
2485  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2486 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
2487 #define IWL_PASSIVE_DWELL_TIME_52   (10)
2488 #define IWL_PASSIVE_DWELL_BASE      (100)
2489 #define IWL_CHANNEL_TUNE_TIME       5
2490
2491 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2492                                                 enum ieee80211_band band)
2493 {
2494         if (band == IEEE80211_BAND_5GHZ)
2495                 return IWL_ACTIVE_DWELL_TIME_52;
2496         else
2497                 return IWL_ACTIVE_DWELL_TIME_24;
2498 }
2499
2500 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2501                                           enum ieee80211_band band)
2502 {
2503         u16 active = iwl4965_get_active_dwell_time(priv, band);
2504         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2505             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2506             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2507
2508         if (iwl_is_associated(priv)) {
2509                 /* If we're associated, we clamp the maximum passive
2510                  * dwell time to be 98% of the beacon interval (minus
2511                  * 2 * channel tune time) */
2512                 passive = priv->beacon_int;
2513                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2514                         passive = IWL_PASSIVE_DWELL_BASE;
2515                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2516         }
2517
2518         if (passive <= active)
2519                 passive = active + 1;
2520
2521         return passive;
2522 }
2523
2524 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2525                                          enum ieee80211_band band,
2526                                      u8 is_active, u8 direct_mask,
2527                                      struct iwl4965_scan_channel *scan_ch)
2528 {
2529         const struct ieee80211_channel *channels = NULL;
2530         const struct ieee80211_supported_band *sband;
2531         const struct iwl_channel_info *ch_info;
2532         u16 passive_dwell = 0;
2533         u16 active_dwell = 0;
2534         int added, i;
2535
2536         sband = iwl_get_hw_mode(priv, band);
2537         if (!sband)
2538                 return 0;
2539
2540         channels = sband->channels;
2541
2542         active_dwell = iwl4965_get_active_dwell_time(priv, band);
2543         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2544
2545         for (i = 0, added = 0; i < sband->n_channels; i++) {
2546                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2547                         continue;
2548
2549                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2550
2551                 ch_info = iwl_get_channel_info(priv, band,
2552                                          scan_ch->channel);
2553                 if (!is_channel_valid(ch_info)) {
2554                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2555                                        scan_ch->channel);
2556                         continue;
2557                 }
2558
2559                 if (!is_active || is_channel_passive(ch_info) ||
2560                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2561                         scan_ch->type = 0;      /* passive */
2562                 else
2563                         scan_ch->type = 1;      /* active */
2564
2565                 if (scan_ch->type & 1)
2566                         scan_ch->type |= (direct_mask << 1);
2567
2568                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2569                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2570
2571                 /* Set txpower levels to defaults */
2572                 scan_ch->tpc.dsp_atten = 110;
2573                 /* scan_pwr_info->tpc.dsp_atten; */
2574
2575                 /*scan_pwr_info->tpc.tx_gain; */
2576                 if (band == IEEE80211_BAND_5GHZ)
2577                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2578                 else {
2579                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2580                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2581                          * power level:
2582                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2583                          */
2584                 }
2585
2586                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2587                                scan_ch->channel,
2588                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2589                                (scan_ch->type & 1) ?
2590                                active_dwell : passive_dwell);
2591
2592                 scan_ch++;
2593                 added++;
2594         }
2595
2596         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2597         return added;
2598 }
2599
2600 /******************************************************************************
2601  *
2602  * uCode download functions
2603  *
2604  ******************************************************************************/
2605
2606 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2607 {
2608         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2609         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2610         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2611         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2612         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2613         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2614 }
2615
2616 static void iwl4965_nic_start(struct iwl_priv *priv)
2617 {
2618         /* Remove all resets to allow NIC to operate */
2619         iwl_write32(priv, CSR_RESET, 0);
2620 }
2621
2622
2623 /**
2624  * iwl4965_read_ucode - Read uCode images from disk file.
2625  *
2626  * Copy into buffers for card to fetch via bus-mastering
2627  */
2628 static int iwl4965_read_ucode(struct iwl_priv *priv)
2629 {
2630         struct iwl4965_ucode *ucode;
2631         int ret;
2632         const struct firmware *ucode_raw;
2633         const char *name = priv->cfg->fw_name;
2634         u8 *src;
2635         size_t len;
2636         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2637
2638         /* Ask kernel firmware_class module to get the boot firmware off disk.
2639          * request_firmware() is synchronous, file is in memory on return. */
2640         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2641         if (ret < 0) {
2642                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2643                                         name, ret);
2644                 goto error;
2645         }
2646
2647         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2648                        name, ucode_raw->size);
2649
2650         /* Make sure that we got at least our header! */
2651         if (ucode_raw->size < sizeof(*ucode)) {
2652                 IWL_ERROR("File size way too small!\n");
2653                 ret = -EINVAL;
2654                 goto err_release;
2655         }
2656
2657         /* Data from ucode file:  header followed by uCode images */
2658         ucode = (void *)ucode_raw->data;
2659
2660         ver = le32_to_cpu(ucode->ver);
2661         inst_size = le32_to_cpu(ucode->inst_size);
2662         data_size = le32_to_cpu(ucode->data_size);
2663         init_size = le32_to_cpu(ucode->init_size);
2664         init_data_size = le32_to_cpu(ucode->init_data_size);
2665         boot_size = le32_to_cpu(ucode->boot_size);
2666
2667         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2668         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2669                        inst_size);
2670         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2671                        data_size);
2672         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2673                        init_size);
2674         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2675                        init_data_size);
2676         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2677                        boot_size);
2678
2679         /* Verify size of file vs. image size info in file's header */
2680         if (ucode_raw->size < sizeof(*ucode) +
2681                 inst_size + data_size + init_size +
2682                 init_data_size + boot_size) {
2683
2684                 IWL_DEBUG_INFO("uCode file size %d too small\n",
2685                                (int)ucode_raw->size);
2686                 ret = -EINVAL;
2687                 goto err_release;
2688         }
2689
2690         /* Verify that uCode images will fit in card's SRAM */
2691         if (inst_size > priv->hw_params.max_inst_size) {
2692                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2693                                inst_size);
2694                 ret = -EINVAL;
2695                 goto err_release;
2696         }
2697
2698         if (data_size > priv->hw_params.max_data_size) {
2699                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2700                                 data_size);
2701                 ret = -EINVAL;
2702                 goto err_release;
2703         }
2704         if (init_size > priv->hw_params.max_inst_size) {
2705                 IWL_DEBUG_INFO
2706                     ("uCode init instr len %d too large to fit in\n",
2707                       init_size);
2708                 ret = -EINVAL;
2709                 goto err_release;
2710         }
2711         if (init_data_size > priv->hw_params.max_data_size) {
2712                 IWL_DEBUG_INFO
2713                     ("uCode init data len %d too large to fit in\n",
2714                       init_data_size);
2715                 ret = -EINVAL;
2716                 goto err_release;
2717         }
2718         if (boot_size > priv->hw_params.max_bsm_size) {
2719                 IWL_DEBUG_INFO
2720                     ("uCode boot instr len %d too large to fit in\n",
2721                       boot_size);
2722                 ret = -EINVAL;
2723                 goto err_release;
2724         }
2725
2726         /* Allocate ucode buffers for card's bus-master loading ... */
2727
2728         /* Runtime instructions and 2 copies of data:
2729          * 1) unmodified from disk
2730          * 2) backup cache for save/restore during power-downs */
2731         priv->ucode_code.len = inst_size;
2732         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2733
2734         priv->ucode_data.len = data_size;
2735         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2736
2737         priv->ucode_data_backup.len = data_size;
2738         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2739
2740         /* Initialization instructions and data */
2741         if (init_size && init_data_size) {
2742                 priv->ucode_init.len = init_size;
2743                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2744
2745                 priv->ucode_init_data.len = init_data_size;
2746                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2747
2748                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2749                         goto err_pci_alloc;
2750         }
2751
2752         /* Bootstrap (instructions only, no data) */
2753         if (boot_size) {
2754                 priv->ucode_boot.len = boot_size;
2755                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2756
2757                 if (!priv->ucode_boot.v_addr)
2758                         goto err_pci_alloc;
2759         }
2760
2761         /* Copy images into buffers for card's bus-master reads ... */
2762
2763         /* Runtime instructions (first block of data in file) */
2764         src = &ucode->data[0];
2765         len = priv->ucode_code.len;
2766         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2767         memcpy(priv->ucode_code.v_addr, src, len);
2768         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2769                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2770
2771         /* Runtime data (2nd block)
2772          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
2773         src = &ucode->data[inst_size];
2774         len = priv->ucode_data.len;
2775         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2776         memcpy(priv->ucode_data.v_addr, src, len);
2777         memcpy(priv->ucode_data_backup.v_addr, src, len);
2778
2779         /* Initialization instructions (3rd block) */
2780         if (init_size) {
2781                 src = &ucode->data[inst_size + data_size];
2782                 len = priv->ucode_init.len;
2783                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2784                                 len);
2785                 memcpy(priv->ucode_init.v_addr, src, len);
2786         }
2787
2788         /* Initialization data (4th block) */
2789         if (init_data_size) {
2790                 src = &ucode->data[inst_size + data_size + init_size];
2791                 len = priv->ucode_init_data.len;
2792                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2793                                len);
2794                 memcpy(priv->ucode_init_data.v_addr, src, len);
2795         }
2796
2797         /* Bootstrap instructions (5th block) */
2798         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2799         len = priv->ucode_boot.len;
2800         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2801         memcpy(priv->ucode_boot.v_addr, src, len);
2802
2803         /* We have our copies now, allow OS release its copies */
2804         release_firmware(ucode_raw);
2805         return 0;
2806
2807  err_pci_alloc:
2808         IWL_ERROR("failed to allocate pci memory\n");
2809         ret = -ENOMEM;
2810         iwl4965_dealloc_ucode_pci(priv);
2811
2812  err_release:
2813         release_firmware(ucode_raw);
2814
2815  error:
2816         return ret;
2817 }
2818
2819 /**
2820  * iwl_alive_start - called after REPLY_ALIVE notification received
2821  *                   from protocol/runtime uCode (initialization uCode's
2822  *                   Alive gets handled by iwl_init_alive_start()).
2823  */
2824 static void iwl_alive_start(struct iwl_priv *priv)
2825 {
2826         int ret = 0;
2827
2828         IWL_DEBUG_INFO("Runtime Alive received.\n");
2829
2830         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2831                 /* We had an error bringing up the hardware, so take it
2832                  * all the way back down so we can try again */
2833                 IWL_DEBUG_INFO("Alive failed.\n");
2834                 goto restart;
2835         }
2836
2837         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2838          * This is a paranoid check, because we would not have gotten the
2839          * "runtime" alive if code weren't properly loaded.  */
2840         if (iwl_verify_ucode(priv)) {
2841                 /* Runtime instruction load was bad;
2842                  * take it all the way back down so we can try again */
2843                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2844                 goto restart;
2845         }
2846
2847         iwlcore_clear_stations_table(priv);
2848         ret = priv->cfg->ops->lib->alive_notify(priv);
2849         if (ret) {
2850                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2851                             ret);
2852                 goto restart;
2853         }
2854
2855         /* After the ALIVE response, we can send host commands to 4965 uCode */
2856         set_bit(STATUS_ALIVE, &priv->status);
2857
2858         /* Clear out the uCode error bit if it is set */
2859         clear_bit(STATUS_FW_ERROR, &priv->status);
2860
2861         if (iwl_is_rfkill(priv))
2862                 return;
2863
2864         ieee80211_wake_queues(priv->hw);
2865
2866         priv->active_rate = priv->rates_mask;
2867         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2868
2869         if (iwl_is_associated(priv)) {
2870                 struct iwl_rxon_cmd *active_rxon =
2871                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2872
2873                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2874                        sizeof(priv->staging_rxon));
2875                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2876         } else {
2877                 /* Initialize our rx_config data */
2878                 iwl4965_connection_init_rx_config(priv);
2879                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2880         }
2881
2882         /* Configure Bluetooth device coexistence support */
2883         iwl4965_send_bt_config(priv);
2884
2885         iwl_reset_run_time_calib(priv);
2886
2887         /* Configure the adapter for unassociated operation */
2888         iwl4965_commit_rxon(priv);
2889
2890         /* At this point, the NIC is initialized and operational */
2891         iwl4965_rf_kill_ct_config(priv);
2892
2893         iwl_leds_register(priv);
2894
2895         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2896         set_bit(STATUS_READY, &priv->status);
2897         wake_up_interruptible(&priv->wait_command_queue);
2898
2899         if (priv->error_recovering)
2900                 iwl4965_error_recovery(priv);
2901
2902         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
2903         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2904         return;
2905
2906  restart:
2907         queue_work(priv->workqueue, &priv->restart);
2908 }
2909
2910 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2911
2912 static void __iwl4965_down(struct iwl_priv *priv)
2913 {
2914         unsigned long flags;
2915         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2916
2917         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2918
2919         if (!exit_pending)
2920                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2921
2922         iwl_leds_unregister(priv);
2923
2924         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2925
2926         iwlcore_clear_stations_table(priv);
2927
2928         /* Unblock any waiting calls */
2929         wake_up_interruptible_all(&priv->wait_command_queue);
2930
2931         /* Wipe out the EXIT_PENDING status bit if we are not actually
2932          * exiting the module */
2933         if (!exit_pending)
2934                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2935
2936         /* stop and reset the on-board processor */
2937         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2938
2939         /* tell the device to stop sending interrupts */
2940         spin_lock_irqsave(&priv->lock, flags);
2941         iwl4965_disable_interrupts(priv);
2942         spin_unlock_irqrestore(&priv->lock, flags);
2943         iwl_synchronize_irq(priv);
2944
2945         if (priv->mac80211_registered)
2946                 ieee80211_stop_queues(priv->hw);
2947
2948         /* If we have not previously called iwl4965_init() then
2949          * clear all bits but the RF Kill and SUSPEND bits and return */
2950         if (!iwl_is_init(priv)) {
2951                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2952                                         STATUS_RF_KILL_HW |
2953                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2954                                         STATUS_RF_KILL_SW |
2955                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2956                                         STATUS_GEO_CONFIGURED |
2957                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2958                                         STATUS_IN_SUSPEND;
2959                 goto exit;
2960         }
2961
2962         /* ...otherwise clear out all the status bits but the RF Kill and
2963          * SUSPEND bits and continue taking the NIC down. */
2964         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2965                                 STATUS_RF_KILL_HW |
2966                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2967                                 STATUS_RF_KILL_SW |
2968                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2969                                 STATUS_GEO_CONFIGURED |
2970                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2971                                 STATUS_IN_SUSPEND |
2972                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2973                                 STATUS_FW_ERROR;
2974
2975         spin_lock_irqsave(&priv->lock, flags);
2976         iwl_clear_bit(priv, CSR_GP_CNTRL,
2977                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2978         spin_unlock_irqrestore(&priv->lock, flags);
2979
2980         iwl_txq_ctx_stop(priv);
2981         iwl_rxq_stop(priv);
2982
2983         spin_lock_irqsave(&priv->lock, flags);
2984         if (!iwl_grab_nic_access(priv)) {
2985                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2986                                          APMG_CLK_VAL_DMA_CLK_RQT);
2987                 iwl_release_nic_access(priv);
2988         }
2989         spin_unlock_irqrestore(&priv->lock, flags);
2990
2991         udelay(5);
2992
2993         /* FIXME: apm_ops.suspend(priv) */
2994         priv->cfg->ops->lib->apm_ops.reset(priv);
2995         priv->cfg->ops->lib->free_shared_mem(priv);
2996
2997  exit:
2998         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2999
3000         if (priv->ibss_beacon)
3001                 dev_kfree_skb(priv->ibss_beacon);
3002         priv->ibss_beacon = NULL;
3003
3004         /* clear out any free frames */
3005         iwl_clear_free_frames(priv);
3006 }
3007
3008 static void iwl4965_down(struct iwl_priv *priv)
3009 {
3010         mutex_lock(&priv->mutex);
3011         __iwl4965_down(priv);
3012         mutex_unlock(&priv->mutex);
3013
3014         iwl_cancel_deferred_work(priv);
3015 }
3016
3017 #define MAX_HW_RESTARTS 5
3018
3019 static int __iwl4965_up(struct iwl_priv *priv)
3020 {
3021         int i;
3022         int ret;
3023
3024         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3025                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3026                 return -EIO;
3027         }
3028
3029         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3030                 IWL_WARNING("Radio disabled by SW RF kill (module "
3031                             "parameter)\n");
3032                 iwl_rfkill_set_hw_state(priv);
3033                 return -ENODEV;
3034         }
3035
3036         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3037                 IWL_ERROR("ucode not available for device bringup\n");
3038                 return -EIO;
3039         }
3040
3041         /* If platform's RF_KILL switch is NOT set to KILL */
3042         if (iwl_read32(priv, CSR_GP_CNTRL) &
3043                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3044                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3045         else {
3046                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3047                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3048                         iwl_rfkill_set_hw_state(priv);
3049                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3050                         return -ENODEV;
3051                 }
3052         }
3053
3054         iwl_rfkill_set_hw_state(priv);
3055         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3056
3057         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3058         if (ret) {
3059                 IWL_ERROR("Unable to allocate shared memory\n");
3060                 return ret;
3061         }
3062
3063         ret = iwl_hw_nic_init(priv);
3064         if (ret) {
3065                 IWL_ERROR("Unable to init nic\n");
3066                 return ret;
3067         }
3068
3069         /* make sure rfkill handshake bits are cleared */
3070         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3071         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3072                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3073
3074         /* clear (again), then enable host interrupts */
3075         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3076         iwl4965_enable_interrupts(priv);
3077
3078         /* really make sure rfkill handshake bits are cleared */
3079         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3080         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3081
3082         /* Copy original ucode data image from disk into backup cache.
3083          * This will be used to initialize the on-board processor's
3084          * data SRAM for a clean start when the runtime program first loads. */
3085         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3086                priv->ucode_data.len);
3087
3088         /* We return success when we resume from suspend and rf_kill is on. */
3089         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3090                 return 0;
3091
3092         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3093
3094                 iwlcore_clear_stations_table(priv);
3095
3096                 /* load bootstrap state machine,
3097                  * load bootstrap program into processor's memory,
3098                  * prepare to load the "initialize" uCode */
3099                 ret = priv->cfg->ops->lib->load_ucode(priv);
3100
3101                 if (ret) {
3102                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3103                         continue;
3104                 }
3105
3106                 /* start card; "initialize" will load runtime ucode */
3107                 iwl4965_nic_start(priv);
3108
3109                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3110
3111                 return 0;
3112         }
3113
3114         set_bit(STATUS_EXIT_PENDING, &priv->status);
3115         __iwl4965_down(priv);
3116
3117         /* tried to restart and config the device for as long as our
3118          * patience could withstand */
3119         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3120         return -EIO;
3121 }
3122
3123
3124 /*****************************************************************************
3125  *
3126  * Workqueue callbacks
3127  *
3128  *****************************************************************************/
3129
3130 static void iwl_bg_init_alive_start(struct work_struct *data)
3131 {
3132         struct iwl_priv *priv =
3133             container_of(data, struct iwl_priv, init_alive_start.work);
3134
3135         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3136                 return;
3137
3138         mutex_lock(&priv->mutex);
3139         priv->cfg->ops->lib->init_alive_start(priv);
3140         mutex_unlock(&priv->mutex);
3141 }
3142
3143 static void iwl_bg_alive_start(struct work_struct *data)
3144 {
3145         struct iwl_priv *priv =
3146             container_of(data, struct iwl_priv, alive_start.work);
3147
3148         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3149                 return;
3150
3151         mutex_lock(&priv->mutex);
3152         iwl_alive_start(priv);
3153         mutex_unlock(&priv->mutex);
3154 }
3155
3156 static void iwl4965_bg_rf_kill(struct work_struct *work)
3157 {
3158         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3159
3160         wake_up_interruptible(&priv->wait_command_queue);
3161
3162         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3163                 return;
3164
3165         mutex_lock(&priv->mutex);
3166
3167         if (!iwl_is_rfkill(priv)) {
3168                 IWL_DEBUG(IWL_DL_RF_KILL,
3169                           "HW and/or SW RF Kill no longer active, restarting "
3170                           "device\n");
3171                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3172                         queue_work(priv->workqueue, &priv->restart);
3173         } else {
3174                 /* make sure mac80211 stop sending Tx frame */
3175                 if (priv->mac80211_registered)
3176                         ieee80211_stop_queues(priv->hw);
3177
3178                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3179                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3180                                           "disabled by SW switch\n");
3181                 else
3182                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3183                                     "Kill switch must be turned off for "
3184                                     "wireless networking to work.\n");
3185         }
3186         iwl_rfkill_set_hw_state(priv);
3187
3188         mutex_unlock(&priv->mutex);
3189 }
3190
3191 static void iwl4965_bg_set_monitor(struct work_struct *work)
3192 {
3193         struct iwl_priv *priv = container_of(work,
3194                                 struct iwl_priv, set_monitor);
3195
3196         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3197
3198         mutex_lock(&priv->mutex);
3199
3200         if (!iwl_is_ready(priv))
3201                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3202         else
3203                 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3204                         IWL_ERROR("iwl4965_set_mode() failed\n");
3205
3206         mutex_unlock(&priv->mutex);
3207 }
3208
3209 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3210
3211 static void iwl4965_bg_scan_check(struct work_struct *data)
3212 {
3213         struct iwl_priv *priv =
3214             container_of(data, struct iwl_priv, scan_check.work);
3215
3216         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3217                 return;
3218
3219         mutex_lock(&priv->mutex);
3220         if (test_bit(STATUS_SCANNING, &priv->status) ||
3221             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3222                 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3223                         "adapter (%dms)\n",
3224                         jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3225
3226                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3227                         iwl4965_send_scan_abort(priv);
3228         }
3229         mutex_unlock(&priv->mutex);
3230 }
3231
3232 static void iwl4965_bg_request_scan(struct work_struct *data)
3233 {
3234         struct iwl_priv *priv =
3235             container_of(data, struct iwl_priv, request_scan);
3236         struct iwl_host_cmd cmd = {
3237                 .id = REPLY_SCAN_CMD,
3238                 .len = sizeof(struct iwl4965_scan_cmd),
3239                 .meta.flags = CMD_SIZE_HUGE,
3240         };
3241         struct iwl4965_scan_cmd *scan;
3242         struct ieee80211_conf *conf = NULL;
3243         u16 cmd_len;
3244         enum ieee80211_band band;
3245         u8 direct_mask;
3246         int ret = 0;
3247
3248         conf = ieee80211_get_hw_conf(priv->hw);
3249
3250         mutex_lock(&priv->mutex);
3251
3252         if (!iwl_is_ready(priv)) {
3253                 IWL_WARNING("request scan called when driver not ready.\n");
3254                 goto done;
3255         }
3256
3257         /* Make sure the scan wasn't cancelled before this queued work
3258          * was given the chance to run... */
3259         if (!test_bit(STATUS_SCANNING, &priv->status))
3260                 goto done;
3261
3262         /* This should never be called or scheduled if there is currently
3263          * a scan active in the hardware. */
3264         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3265                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3266                                "Ignoring second request.\n");
3267                 ret = -EIO;
3268                 goto done;
3269         }
3270
3271         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3272                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3273                 goto done;
3274         }
3275
3276         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3277                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
3278                 goto done;
3279         }
3280
3281         if (iwl_is_rfkill(priv)) {
3282                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3283                 goto done;
3284         }
3285
3286         if (!test_bit(STATUS_READY, &priv->status)) {
3287                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
3288                 goto done;
3289         }
3290
3291         if (!priv->scan_bands) {
3292                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3293                 goto done;
3294         }
3295
3296         if (!priv->scan) {
3297                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3298                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3299                 if (!priv->scan) {
3300                         ret = -ENOMEM;
3301                         goto done;
3302                 }
3303         }
3304         scan = priv->scan;
3305         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3306
3307         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3308         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3309
3310         if (iwl_is_associated(priv)) {
3311                 u16 interval = 0;
3312                 u32 extra;
3313                 u32 suspend_time = 100;
3314                 u32 scan_suspend_time = 100;
3315                 unsigned long flags;
3316
3317                 IWL_DEBUG_INFO("Scanning while associated...\n");
3318
3319                 spin_lock_irqsave(&priv->lock, flags);
3320                 interval = priv->beacon_int;
3321                 spin_unlock_irqrestore(&priv->lock, flags);
3322
3323                 scan->suspend_time = 0;
3324                 scan->max_out_time = cpu_to_le32(200 * 1024);
3325                 if (!interval)
3326                         interval = suspend_time;
3327
3328                 extra = (suspend_time / interval) << 22;
3329                 scan_suspend_time = (extra |
3330                     ((suspend_time % interval) * 1024));
3331                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3332                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3333                                scan_suspend_time, interval);
3334         }
3335
3336         /* We should add the ability for user to lock to PASSIVE ONLY */
3337         if (priv->one_direct_scan) {
3338                 IWL_DEBUG_SCAN
3339                     ("Kicking off one direct scan for '%s'\n",
3340                      iwl4965_escape_essid(priv->direct_ssid,
3341                                       priv->direct_ssid_len));
3342                 scan->direct_scan[0].id = WLAN_EID_SSID;
3343                 scan->direct_scan[0].len = priv->direct_ssid_len;
3344                 memcpy(scan->direct_scan[0].ssid,
3345                        priv->direct_ssid, priv->direct_ssid_len);
3346                 direct_mask = 1;
3347         } else if (!iwl_is_associated(priv) && priv->essid_len) {
3348                 IWL_DEBUG_SCAN
3349                   ("Kicking off one direct scan for '%s' when not associated\n",
3350                    iwl4965_escape_essid(priv->essid, priv->essid_len));
3351                 scan->direct_scan[0].id = WLAN_EID_SSID;
3352                 scan->direct_scan[0].len = priv->essid_len;
3353                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3354                 direct_mask = 1;
3355         } else {
3356                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3357                 direct_mask = 0;
3358         }
3359
3360         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3361         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3362         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3363
3364
3365         switch (priv->scan_bands) {
3366         case 2:
3367                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3368                 scan->tx_cmd.rate_n_flags =
3369                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3370                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3371
3372                 scan->good_CRC_th = 0;
3373                 band = IEEE80211_BAND_2GHZ;
3374                 break;
3375
3376         case 1:
3377                 scan->tx_cmd.rate_n_flags =
3378                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3379                                 RATE_MCS_ANT_B_MSK);
3380                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3381                 band = IEEE80211_BAND_5GHZ;
3382                 break;
3383
3384         default:
3385                 IWL_WARNING("Invalid scan band count\n");
3386                 goto done;
3387         }
3388
3389         /* We don't build a direct scan probe request; the uCode will do
3390          * that based on the direct_mask added to each channel entry */
3391         cmd_len = iwl4965_fill_probe_req(priv, band,
3392                                         (struct ieee80211_mgmt *)scan->data,
3393                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3394
3395         scan->tx_cmd.len = cpu_to_le16(cmd_len);
3396         /* select Rx chains */
3397
3398         /* Force use of chains B and C (0x6) for scan Rx.
3399          * Avoid A (0x1) because of its off-channel reception on A-band.
3400          * MIMO is not used here, but value is required to make uCode happy. */
3401         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3402                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3403                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3404                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3405
3406         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3407                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3408
3409         if (direct_mask)
3410                 scan->channel_count =
3411                         iwl4965_get_channels_for_scan(
3412                                 priv, band, 1, /* active */
3413                                 direct_mask,
3414                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3415         else
3416                 scan->channel_count =
3417                         iwl4965_get_channels_for_scan(
3418                                 priv, band, 0, /* passive */
3419                                 direct_mask,
3420                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3421
3422         scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3423                                RXON_FILTER_BCON_AWARE_MSK);
3424         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3425             scan->channel_count * sizeof(struct iwl4965_scan_channel);
3426         cmd.data = scan;
3427         scan->len = cpu_to_le16(cmd.len);
3428
3429         set_bit(STATUS_SCAN_HW, &priv->status);
3430         ret = iwl_send_cmd_sync(priv, &cmd);
3431         if (ret)
3432                 goto done;
3433
3434         queue_delayed_work(priv->workqueue, &priv->scan_check,
3435                            IWL_SCAN_CHECK_WATCHDOG);
3436
3437         mutex_unlock(&priv->mutex);
3438         return;
3439
3440  done:
3441         /* inform mac80211 scan aborted */
3442         queue_work(priv->workqueue, &priv->scan_completed);
3443         mutex_unlock(&priv->mutex);
3444 }
3445
3446 static void iwl_bg_run_time_calib_work(struct work_struct *work)
3447 {
3448         struct iwl_priv *priv = container_of(work, struct iwl_priv,
3449                         run_time_calib_work);
3450
3451         mutex_lock(&priv->mutex);
3452
3453         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3454             test_bit(STATUS_SCANNING, &priv->status)) {
3455                 mutex_unlock(&priv->mutex);
3456                 return;
3457         }
3458
3459         if (priv->start_calib) {
3460                 iwl_chain_noise_calibration(priv, &priv->statistics);
3461
3462                 iwl_sensitivity_calibration(priv, &priv->statistics);
3463         }
3464
3465         mutex_unlock(&priv->mutex);
3466         return;
3467 }
3468
3469 static void iwl4965_bg_up(struct work_struct *data)
3470 {
3471         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3472
3473         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3474                 return;
3475
3476         mutex_lock(&priv->mutex);
3477         __iwl4965_up(priv);
3478         mutex_unlock(&priv->mutex);
3479 }
3480
3481 static void iwl4965_bg_restart(struct work_struct *data)
3482 {
3483         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3484
3485         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3486                 return;
3487
3488         iwl4965_down(priv);
3489         queue_work(priv->workqueue, &priv->up);
3490 }
3491
3492 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3493 {
3494         struct iwl_priv *priv =
3495             container_of(data, struct iwl_priv, rx_replenish);
3496
3497         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3498                 return;
3499
3500         mutex_lock(&priv->mutex);
3501         iwl_rx_replenish(priv);
3502         mutex_unlock(&priv->mutex);
3503 }
3504
3505 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3506
3507 static void iwl4965_post_associate(struct iwl_priv *priv)
3508 {
3509         struct ieee80211_conf *conf = NULL;
3510         int ret = 0;
3511         DECLARE_MAC_BUF(mac);
3512
3513         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3514                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3515                 return;
3516         }
3517
3518         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3519                         priv->assoc_id,
3520                         print_mac(mac, priv->active_rxon.bssid_addr));
3521
3522
3523         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3524                 return;
3525
3526
3527         if (!priv->vif || !priv->is_open)
3528                 return;
3529
3530         iwl4965_scan_cancel_timeout(priv, 200);
3531
3532         conf = ieee80211_get_hw_conf(priv->hw);
3533
3534         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3535         iwl4965_commit_rxon(priv);
3536
3537         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3538         iwl4965_setup_rxon_timing(priv);
3539         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3540                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3541         if (ret)
3542                 IWL_WARNING("REPLY_RXON_TIMING failed - "
3543                             "Attempting to continue.\n");
3544
3545         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3546
3547         if (priv->current_ht_config.is_ht)
3548                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3549
3550         iwl_set_rxon_chain(priv);
3551         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3552
3553         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3554                         priv->assoc_id, priv->beacon_int);
3555
3556         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3557                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3558         else
3559                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3560
3561         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3562                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3563                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3564                 else
3565                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3566
3567                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3568                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3569
3570         }
3571
3572         iwl4965_commit_rxon(priv);
3573
3574         switch (priv->iw_mode) {
3575         case IEEE80211_IF_TYPE_STA:
3576                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3577                 break;
3578
3579         case IEEE80211_IF_TYPE_IBSS:
3580
3581                 /* clear out the station table */
3582                 iwlcore_clear_stations_table(priv);
3583
3584                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3585                 iwl_rxon_add_station(priv, priv->bssid, 0);
3586                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3587                 iwl4965_send_beacon_cmd(priv);
3588
3589                 break;
3590
3591         default:
3592                 IWL_ERROR("%s Should not be called in %d mode\n",
3593                                 __FUNCTION__, priv->iw_mode);
3594                 break;
3595         }
3596
3597         iwl4965_sequence_reset(priv);
3598
3599         /* Enable Rx differential gain and sensitivity calibrations */
3600         iwl_chain_noise_reset(priv);
3601         priv->start_calib = 1;
3602
3603         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3604                 priv->assoc_station_added = 1;
3605
3606         iwl4965_activate_qos(priv, 0);
3607
3608         iwl_power_update_mode(priv, 0);
3609         /* we have just associated, don't start scan too early */
3610         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3611 }
3612
3613
3614 static void iwl4965_bg_post_associate(struct work_struct *data)
3615 {
3616         struct iwl_priv *priv = container_of(data, struct iwl_priv,
3617                                              post_associate.work);
3618
3619         mutex_lock(&priv->mutex);
3620         iwl4965_post_associate(priv);
3621         mutex_unlock(&priv->mutex);
3622
3623 }
3624
3625 static void iwl4965_bg_abort_scan(struct work_struct *work)
3626 {
3627         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3628
3629         if (!iwl_is_ready(priv))
3630                 return;
3631
3632         mutex_lock(&priv->mutex);
3633
3634         set_bit(STATUS_SCAN_ABORTING, &priv->status);
3635         iwl4965_send_scan_abort(priv);
3636
3637         mutex_unlock(&priv->mutex);
3638 }
3639
3640 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3641
3642 static void iwl4965_bg_scan_completed(struct work_struct *work)
3643 {
3644         struct iwl_priv *priv =
3645             container_of(work, struct iwl_priv, scan_completed);
3646
3647         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
3648
3649         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3650                 return;
3651
3652         if (test_bit(STATUS_CONF_PENDING, &priv->status))
3653                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
3654
3655         ieee80211_scan_completed(priv->hw);
3656
3657         /* Since setting the TXPOWER may have been deferred while
3658          * performing the scan, fire one off */
3659         mutex_lock(&priv->mutex);
3660         iwl4965_hw_reg_send_txpower(priv);
3661         mutex_unlock(&priv->mutex);
3662 }
3663
3664 /*****************************************************************************
3665  *
3666  * mac80211 entry point functions
3667  *
3668  *****************************************************************************/
3669
3670 #define UCODE_READY_TIMEOUT     (2 * HZ)
3671
3672 static int iwl4965_mac_start(struct ieee80211_hw *hw)
3673 {
3674         struct iwl_priv *priv = hw->priv;
3675         int ret;
3676
3677         IWL_DEBUG_MAC80211("enter\n");
3678
3679         if (pci_enable_device(priv->pci_dev)) {
3680                 IWL_ERROR("Fail to pci_enable_device\n");
3681                 return -ENODEV;
3682         }
3683         pci_restore_state(priv->pci_dev);
3684         pci_enable_msi(priv->pci_dev);
3685
3686         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
3687                           DRV_NAME, priv);
3688         if (ret) {
3689                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
3690                 goto out_disable_msi;
3691         }
3692
3693         /* we should be verifying the device is ready to be opened */
3694         mutex_lock(&priv->mutex);
3695
3696         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
3697         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3698          * ucode filename and max sizes are card-specific. */
3699
3700         if (!priv->ucode_code.len) {
3701                 ret = iwl4965_read_ucode(priv);
3702                 if (ret) {
3703                         IWL_ERROR("Could not read microcode: %d\n", ret);
3704                         mutex_unlock(&priv->mutex);
3705                         goto out_release_irq;
3706                 }
3707         }
3708
3709         ret = __iwl4965_up(priv);
3710
3711         mutex_unlock(&priv->mutex);
3712
3713         if (ret)
3714                 goto out_release_irq;
3715
3716         IWL_DEBUG_INFO("Start UP work done.\n");
3717
3718         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3719                 return 0;
3720
3721         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3722          * mac80211 will not be run successfully. */
3723         if (priv->ucode_type == UCODE_RT) {
3724                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3725                                 test_bit(STATUS_READY, &priv->status),
3726                                 UCODE_READY_TIMEOUT);
3727                 if (!ret) {
3728                         if (!test_bit(STATUS_READY, &priv->status)) {
3729                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
3730                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
3731                                 ret = -ETIMEDOUT;
3732                                 goto out_release_irq;
3733                         }
3734                 }
3735
3736                 priv->is_open = 1;
3737         }
3738         IWL_DEBUG_MAC80211("leave\n");
3739         return 0;
3740
3741 out_release_irq:
3742         free_irq(priv->pci_dev->irq, priv);
3743 out_disable_msi:
3744         pci_disable_msi(priv->pci_dev);
3745         pci_disable_device(priv->pci_dev);
3746         priv->is_open = 0;
3747         IWL_DEBUG_MAC80211("leave - failed\n");
3748         return ret;
3749 }
3750
3751 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
3752 {
3753         struct iwl_priv *priv = hw->priv;
3754
3755         IWL_DEBUG_MAC80211("enter\n");
3756
3757         if (!priv->is_open) {
3758                 IWL_DEBUG_MAC80211("leave - skip\n");
3759                 return;
3760         }
3761
3762         priv->is_open = 0;
3763
3764         if (iwl_is_ready_rf(priv)) {
3765                 /* stop mac, cancel any scan request and clear
3766                  * RXON_FILTER_ASSOC_MSK BIT
3767                  */
3768                 mutex_lock(&priv->mutex);
3769                 iwl4965_scan_cancel_timeout(priv, 100);
3770                 cancel_delayed_work(&priv->post_associate);
3771                 mutex_unlock(&priv->mutex);
3772         }
3773
3774         iwl4965_down(priv);
3775
3776         flush_workqueue(priv->workqueue);
3777         free_irq(priv->pci_dev->irq, priv);
3778         pci_disable_msi(priv->pci_dev);
3779         pci_save_state(priv->pci_dev);
3780         pci_disable_device(priv->pci_dev);
3781
3782         IWL_DEBUG_MAC80211("leave\n");
3783 }
3784
3785 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3786 {
3787         struct iwl_priv *priv = hw->priv;
3788
3789         IWL_DEBUG_MAC80211("enter\n");
3790
3791         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
3792                 IWL_DEBUG_MAC80211("leave - monitor\n");
3793                 return -1;
3794         }
3795
3796         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3797                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3798
3799         if (iwl_tx_skb(priv, skb))
3800                 dev_kfree_skb_any(skb);
3801
3802         IWL_DEBUG_MAC80211("leave\n");
3803         return 0;
3804 }
3805
3806 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
3807                                  struct ieee80211_if_init_conf *conf)
3808 {
3809         struct iwl_priv *priv = hw->priv;
3810         unsigned long flags;
3811         DECLARE_MAC_BUF(mac);
3812
3813         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
3814
3815         if (priv->vif) {
3816                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
3817                 return -EOPNOTSUPP;
3818         }
3819
3820         spin_lock_irqsave(&priv->lock, flags);
3821         priv->vif = conf->vif;
3822
3823         spin_unlock_irqrestore(&priv->lock, flags);
3824
3825         mutex_lock(&priv->mutex);
3826
3827         if (conf->mac_addr) {
3828                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
3829                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3830         }
3831
3832         if (iwl_is_ready(priv))
3833                 iwl4965_set_mode(priv, conf->type);
3834
3835         mutex_unlock(&priv->mutex);
3836
3837         IWL_DEBUG_MAC80211("leave\n");
3838         return 0;
3839 }
3840
3841 /**
3842  * iwl4965_mac_config - mac80211 config callback
3843  *
3844  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3845  * be set inappropriately and the driver currently sets the hardware up to
3846  * use it whenever needed.
3847  */
3848 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3849 {
3850         struct iwl_priv *priv = hw->priv;
3851         const struct iwl_channel_info *ch_info;
3852         unsigned long flags;
3853         int ret = 0;
3854         u16 channel;
3855
3856         mutex_lock(&priv->mutex);
3857         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
3858
3859         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3860
3861         if (!iwl_is_ready(priv)) {
3862                 IWL_DEBUG_MAC80211("leave - not ready\n");
3863                 ret = -EIO;
3864                 goto out;
3865         }
3866
3867         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
3868                      test_bit(STATUS_SCANNING, &priv->status))) {
3869                 IWL_DEBUG_MAC80211("leave - scanning\n");
3870                 set_bit(STATUS_CONF_PENDING, &priv->status);
3871                 mutex_unlock(&priv->mutex);
3872                 return 0;
3873         }
3874
3875         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3876         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
3877         if (!is_channel_valid(ch_info)) {
3878                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3879                 ret = -EINVAL;
3880                 goto out;
3881         }
3882
3883         spin_lock_irqsave(&priv->lock, flags);
3884
3885         /* if we are switching from ht to 2.4 clear flags
3886          * from any ht related info since 2.4 does not
3887          * support ht */
3888         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
3889 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3890             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3891 #endif
3892         )
3893                 priv->staging_rxon.flags = 0;
3894
3895         iwl_set_rxon_channel(priv, conf->channel->band, channel);
3896
3897         iwl_set_flags_for_band(priv, conf->channel->band);
3898
3899         /* The list of supported rates and rate mask can be different
3900          * for each band; since the band may have changed, reset
3901          * the rate mask to what mac80211 lists */
3902         iwl4965_set_rate(priv);
3903
3904         spin_unlock_irqrestore(&priv->lock, flags);
3905
3906 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3907         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3908                 iwl4965_hw_channel_switch(priv, conf->channel);
3909                 goto out;
3910         }
3911 #endif
3912
3913         if (priv->cfg->ops->lib->radio_kill_sw)
3914                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
3915
3916         if (!conf->radio_enabled) {
3917                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3918                 goto out;
3919         }
3920
3921         if (iwl_is_rfkill(priv)) {
3922                 IWL_DEBUG_MAC80211("leave - RF kill\n");
3923                 ret = -EIO;
3924                 goto out;
3925         }
3926
3927         iwl4965_set_rate(priv);
3928
3929         if (memcmp(&priv->active_rxon,
3930                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
3931                 iwl4965_commit_rxon(priv);
3932         else
3933                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3934
3935         IWL_DEBUG_MAC80211("leave\n");
3936
3937 out:
3938         clear_bit(STATUS_CONF_PENDING, &priv->status);
3939         mutex_unlock(&priv->mutex);
3940         return ret;
3941 }
3942
3943 static void iwl4965_config_ap(struct iwl_priv *priv)
3944 {
3945         int ret = 0;
3946
3947         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3948                 return;
3949
3950         /* The following should be done only at AP bring up */
3951         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3952
3953                 /* RXON - unassoc (to set timing command) */
3954                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3955                 iwl4965_commit_rxon(priv);
3956
3957                 /* RXON Timing */
3958                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3959                 iwl4965_setup_rxon_timing(priv);
3960                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3961                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
3962                 if (ret)
3963                         IWL_WARNING("REPLY_RXON_TIMING failed - "
3964                                         "Attempting to continue.\n");
3965
3966                 iwl_set_rxon_chain(priv);
3967
3968                 /* FIXME: what should be the assoc_id for AP? */
3969                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3970                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3971                         priv->staging_rxon.flags |=
3972                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3973                 else
3974                         priv->staging_rxon.flags &=
3975                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3976
3977                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3978                         if (priv->assoc_capability &
3979                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3980                                 priv->staging_rxon.flags |=
3981                                         RXON_FLG_SHORT_SLOT_MSK;
3982                         else
3983                                 priv->staging_rxon.flags &=
3984                                         ~RXON_FLG_SHORT_SLOT_MSK;
3985
3986                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3987                                 priv->staging_rxon.flags &=
3988                                         ~RXON_FLG_SHORT_SLOT_MSK;
3989                 }
3990                 /* restore RXON assoc */
3991                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3992                 iwl4965_commit_rxon(priv);
3993                 iwl4965_activate_qos(priv, 1);
3994                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3995         }
3996         iwl4965_send_beacon_cmd(priv);
3997
3998         /* FIXME - we need to add code here to detect a totally new
3999          * configuration, reset the AP, unassoc, rxon timing, assoc,
4000          * clear sta table, add BCAST sta... */
4001 }
4002
4003 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4004                                         struct ieee80211_vif *vif,
4005                                     struct ieee80211_if_conf *conf)
4006 {
4007         struct iwl_priv *priv = hw->priv;
4008         DECLARE_MAC_BUF(mac);
4009         unsigned long flags;
4010         int rc;
4011
4012         if (conf == NULL)
4013                 return -EIO;
4014
4015         if (priv->vif != vif) {
4016                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4017                 return 0;
4018         }
4019
4020         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4021             (!conf->beacon || !conf->ssid_len)) {
4022                 IWL_DEBUG_MAC80211
4023                     ("Leaving in AP mode because HostAPD is not ready.\n");
4024                 return 0;
4025         }
4026
4027         if (!iwl_is_alive(priv))
4028                 return -EAGAIN;
4029
4030         mutex_lock(&priv->mutex);
4031
4032         if (conf->bssid)
4033                 IWL_DEBUG_MAC80211("bssid: %s\n",
4034                                    print_mac(mac, conf->bssid));
4035
4036 /*
4037  * very dubious code was here; the probe filtering flag is never set:
4038  *
4039         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4040             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4041  */
4042
4043         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4044                 if (!conf->bssid) {
4045                         conf->bssid = priv->mac_addr;
4046                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4047                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4048                                            print_mac(mac, conf->bssid));
4049                 }
4050                 if (priv->ibss_beacon)
4051                         dev_kfree_skb(priv->ibss_beacon);
4052
4053                 priv->ibss_beacon = conf->beacon;
4054         }
4055
4056         if (iwl_is_rfkill(priv))
4057                 goto done;
4058
4059         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4060             !is_multicast_ether_addr(conf->bssid)) {
4061                 /* If there is currently a HW scan going on in the background
4062                  * then we need to cancel it else the RXON below will fail. */
4063                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4064                         IWL_WARNING("Aborted scan still in progress "
4065                                     "after 100ms\n");
4066                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4067                         mutex_unlock(&priv->mutex);
4068                         return -EAGAIN;
4069                 }
4070                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4071
4072                 /* TODO: Audit driver for usage of these members and see
4073                  * if mac80211 deprecates them (priv->bssid looks like it
4074                  * shouldn't be there, but I haven't scanned the IBSS code
4075                  * to verify) - jpk */
4076                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4077
4078                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4079                         iwl4965_config_ap(priv);
4080                 else {
4081                         rc = iwl4965_commit_rxon(priv);
4082                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4083                                 iwl_rxon_add_station(
4084                                         priv, priv->active_rxon.bssid_addr, 1);
4085                 }
4086
4087         } else {
4088                 iwl4965_scan_cancel_timeout(priv, 100);
4089                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4090                 iwl4965_commit_rxon(priv);
4091         }
4092
4093  done:
4094         spin_lock_irqsave(&priv->lock, flags);
4095         if (!conf->ssid_len)
4096                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4097         else
4098                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4099
4100         priv->essid_len = conf->ssid_len;
4101         spin_unlock_irqrestore(&priv->lock, flags);
4102
4103         IWL_DEBUG_MAC80211("leave\n");
4104         mutex_unlock(&priv->mutex);
4105
4106         return 0;
4107 }
4108
4109 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4110                                  unsigned int changed_flags,
4111                                  unsigned int *total_flags,
4112                                  int mc_count, struct dev_addr_list *mc_list)
4113 {
4114         /*
4115          * XXX: dummy
4116          * see also iwl4965_connection_init_rx_config
4117          */
4118         struct iwl_priv *priv = hw->priv;
4119         int new_flags = 0;
4120         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4121                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4122                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4123                                            IEEE80211_IF_TYPE_MNTR,
4124                                            changed_flags, *total_flags);
4125                         /* queue work 'cuz mac80211 is holding a lock which
4126                          * prevents us from issuing (synchronous) f/w cmds */
4127                         queue_work(priv->workqueue, &priv->set_monitor);
4128                         new_flags &= FIF_PROMISC_IN_BSS |
4129                                      FIF_OTHER_BSS |
4130                                      FIF_ALLMULTI;
4131                 }
4132         }
4133         *total_flags = new_flags;
4134 }
4135
4136 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4137                                      struct ieee80211_if_init_conf *conf)
4138 {
4139         struct iwl_priv *priv = hw->priv;
4140
4141         IWL_DEBUG_MAC80211("enter\n");
4142
4143         mutex_lock(&priv->mutex);
4144
4145         if (iwl_is_ready_rf(priv)) {
4146                 iwl4965_scan_cancel_timeout(priv, 100);
4147                 cancel_delayed_work(&priv->post_associate);
4148                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4149                 iwl4965_commit_rxon(priv);
4150         }
4151         if (priv->vif == conf->vif) {
4152                 priv->vif = NULL;
4153                 memset(priv->bssid, 0, ETH_ALEN);
4154                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4155                 priv->essid_len = 0;
4156         }
4157         mutex_unlock(&priv->mutex);
4158
4159         IWL_DEBUG_MAC80211("leave\n");
4160
4161 }
4162
4163 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4164 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4165                                      struct ieee80211_vif *vif,
4166                                      struct ieee80211_bss_conf *bss_conf,
4167                                      u32 changes)
4168 {
4169         struct iwl_priv *priv = hw->priv;
4170
4171         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4172
4173         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4174                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4175                                    bss_conf->use_short_preamble);
4176                 if (bss_conf->use_short_preamble)
4177                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4178                 else
4179                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4180         }
4181
4182         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4183                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4184                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4185                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4186                 else
4187                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4188         }
4189
4190         if (changes & BSS_CHANGED_HT) {
4191                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4192                 iwl4965_ht_conf(priv, bss_conf);
4193                 iwl_set_rxon_chain(priv);
4194         }
4195
4196         if (changes & BSS_CHANGED_ASSOC) {
4197                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4198                 /* This should never happen as this function should
4199                  * never be called from interrupt context. */
4200                 if (WARN_ON_ONCE(in_interrupt()))
4201                         return;
4202                 if (bss_conf->assoc) {
4203                         priv->assoc_id = bss_conf->aid;
4204                         priv->beacon_int = bss_conf->beacon_int;
4205                         priv->timestamp = bss_conf->timestamp;
4206                         priv->assoc_capability = bss_conf->assoc_capability;
4207                         priv->next_scan_jiffies = jiffies +
4208                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4209                         mutex_lock(&priv->mutex);
4210                         iwl4965_post_associate(priv);
4211                         mutex_unlock(&priv->mutex);
4212                 } else {
4213                         priv->assoc_id = 0;
4214                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4215                 }
4216         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4217                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4218                         iwl_send_rxon_assoc(priv);
4219         }
4220
4221 }
4222
4223 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4224 {
4225         int rc = 0;
4226         unsigned long flags;
4227         struct iwl_priv *priv = hw->priv;
4228
4229         IWL_DEBUG_MAC80211("enter\n");
4230
4231         mutex_lock(&priv->mutex);
4232         spin_lock_irqsave(&priv->lock, flags);
4233
4234         if (!iwl_is_ready_rf(priv)) {
4235                 rc = -EIO;
4236                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4237                 goto out_unlock;
4238         }
4239
4240         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
4241                 rc = -EIO;
4242                 IWL_ERROR("ERROR: APs don't scan\n");
4243                 goto out_unlock;
4244         }
4245
4246         /* we don't schedule scan within next_scan_jiffies period */
4247         if (priv->next_scan_jiffies &&
4248                         time_after(priv->next_scan_jiffies, jiffies)) {
4249                 rc = -EAGAIN;
4250                 goto out_unlock;
4251         }
4252         /* if we just finished scan ask for delay */
4253         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4254                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
4255                 rc = -EAGAIN;
4256                 goto out_unlock;
4257         }
4258         if (len) {
4259                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4260                                iwl4965_escape_essid(ssid, len), (int)len);
4261
4262                 priv->one_direct_scan = 1;
4263                 priv->direct_ssid_len = (u8)
4264                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4265                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4266         } else
4267                 priv->one_direct_scan = 0;
4268
4269         rc = iwl4965_scan_initiate(priv);
4270
4271         IWL_DEBUG_MAC80211("leave\n");
4272
4273 out_unlock:
4274         spin_unlock_irqrestore(&priv->lock, flags);
4275         mutex_unlock(&priv->mutex);
4276
4277         return rc;
4278 }
4279
4280 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4281                         struct ieee80211_key_conf *keyconf, const u8 *addr,
4282                         u32 iv32, u16 *phase1key)
4283 {
4284         struct iwl_priv *priv = hw->priv;
4285         u8 sta_id = IWL_INVALID_STATION;
4286         unsigned long flags;
4287         __le16 key_flags = 0;
4288         int i;
4289         DECLARE_MAC_BUF(mac);
4290
4291         IWL_DEBUG_MAC80211("enter\n");
4292
4293         sta_id = iwl_find_station(priv, addr);
4294         if (sta_id == IWL_INVALID_STATION) {
4295                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4296                                    print_mac(mac, addr));
4297                 return;
4298         }
4299
4300         iwl4965_scan_cancel_timeout(priv, 100);
4301
4302         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4303         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4304         key_flags &= ~STA_KEY_FLG_INVALID;
4305
4306         if (sta_id == priv->hw_params.bcast_sta_id)
4307                 key_flags |= STA_KEY_MULTICAST_MSK;
4308
4309         spin_lock_irqsave(&priv->sta_lock, flags);
4310
4311         priv->stations[sta_id].sta.key.key_flags = key_flags;
4312         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4313
4314         for (i = 0; i < 5; i++)
4315                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4316                         cpu_to_le16(phase1key[i]);
4317
4318         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4319         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4320
4321         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4322
4323         spin_unlock_irqrestore(&priv->sta_lock, flags);
4324
4325         IWL_DEBUG_MAC80211("leave\n");
4326 }
4327
4328 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4329                            const u8 *local_addr, const u8 *addr,
4330                            struct ieee80211_key_conf *key)
4331 {
4332         struct iwl_priv *priv = hw->priv;
4333         DECLARE_MAC_BUF(mac);
4334         int ret = 0;
4335         u8 sta_id = IWL_INVALID_STATION;
4336         u8 is_default_wep_key = 0;
4337
4338         IWL_DEBUG_MAC80211("enter\n");
4339
4340         if (priv->hw_params.sw_crypto) {
4341                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4342                 return -EOPNOTSUPP;
4343         }
4344
4345         if (is_zero_ether_addr(addr))
4346                 /* only support pairwise keys */
4347                 return -EOPNOTSUPP;
4348
4349         sta_id = iwl_find_station(priv, addr);
4350         if (sta_id == IWL_INVALID_STATION) {
4351                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4352                                    print_mac(mac, addr));
4353                 return -EINVAL;
4354
4355         }
4356
4357         mutex_lock(&priv->mutex);
4358         iwl4965_scan_cancel_timeout(priv, 100);
4359         mutex_unlock(&priv->mutex);
4360
4361         /* If we are getting WEP group key and we didn't receive any key mapping
4362          * so far, we are in legacy wep mode (group key only), otherwise we are
4363          * in 1X mode.
4364          * In legacy wep mode, we use another host command to the uCode */
4365         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4366                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4367                 if (cmd == SET_KEY)
4368                         is_default_wep_key = !priv->key_mapping_key;
4369                 else
4370                         is_default_wep_key =
4371                                         (key->hw_key_idx == HW_KEY_DEFAULT);
4372         }
4373
4374         switch (cmd) {
4375         case SET_KEY:
4376                 if (is_default_wep_key)
4377                         ret = iwl_set_default_wep_key(priv, key);
4378                 else
4379                         ret = iwl_set_dynamic_key(priv, key, sta_id);
4380
4381                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4382                 break;
4383         case DISABLE_KEY:
4384                 if (is_default_wep_key)
4385                         ret = iwl_remove_default_wep_key(priv, key);
4386                 else
4387                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
4388
4389                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4390                 break;
4391         default:
4392                 ret = -EINVAL;
4393         }
4394
4395         IWL_DEBUG_MAC80211("leave\n");
4396
4397         return ret;
4398 }
4399
4400 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4401                            const struct ieee80211_tx_queue_params *params)
4402 {
4403         struct iwl_priv *priv = hw->priv;
4404         unsigned long flags;
4405         int q;
4406
4407         IWL_DEBUG_MAC80211("enter\n");
4408
4409         if (!iwl_is_ready_rf(priv)) {
4410                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4411                 return -EIO;
4412         }
4413
4414         if (queue >= AC_NUM) {
4415                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4416                 return 0;
4417         }
4418
4419         if (!priv->qos_data.qos_enable) {
4420                 priv->qos_data.qos_active = 0;
4421                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4422                 return 0;
4423         }
4424         q = AC_NUM - 1 - queue;
4425
4426         spin_lock_irqsave(&priv->lock, flags);
4427
4428         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4429         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4430         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4431         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4432                         cpu_to_le16((params->txop * 32));
4433
4434         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4435         priv->qos_data.qos_active = 1;
4436
4437         spin_unlock_irqrestore(&priv->lock, flags);
4438
4439         mutex_lock(&priv->mutex);
4440         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4441                 iwl4965_activate_qos(priv, 1);
4442         else if (priv->assoc_id && iwl_is_associated(priv))
4443                 iwl4965_activate_qos(priv, 0);
4444
4445         mutex_unlock(&priv->mutex);
4446
4447         IWL_DEBUG_MAC80211("leave\n");
4448         return 0;
4449 }
4450
4451 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4452                                 struct ieee80211_tx_queue_stats *stats)
4453 {
4454         struct iwl_priv *priv = hw->priv;
4455         int i, avail;
4456         struct iwl_tx_queue *txq;
4457         struct iwl_queue *q;
4458         unsigned long flags;
4459
4460         IWL_DEBUG_MAC80211("enter\n");
4461
4462         if (!iwl_is_ready_rf(priv)) {
4463                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4464                 return -EIO;
4465         }
4466
4467         spin_lock_irqsave(&priv->lock, flags);
4468
4469         for (i = 0; i < AC_NUM; i++) {
4470                 txq = &priv->txq[i];
4471                 q = &txq->q;
4472                 avail = iwl_queue_space(q);
4473
4474                 stats[i].len = q->n_window - avail;
4475                 stats[i].limit = q->n_window - q->high_mark;
4476                 stats[i].count = q->n_window;
4477
4478         }
4479         spin_unlock_irqrestore(&priv->lock, flags);
4480
4481         IWL_DEBUG_MAC80211("leave\n");
4482
4483         return 0;
4484 }
4485
4486 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4487                              struct ieee80211_low_level_stats *stats)
4488 {
4489         struct iwl_priv *priv = hw->priv;
4490
4491         priv = hw->priv;
4492         IWL_DEBUG_MAC80211("enter\n");
4493         IWL_DEBUG_MAC80211("leave\n");
4494
4495         return 0;
4496 }
4497
4498 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4499 {
4500         struct iwl_priv *priv;
4501
4502         priv = hw->priv;
4503         IWL_DEBUG_MAC80211("enter\n");
4504         IWL_DEBUG_MAC80211("leave\n");
4505
4506         return 0;
4507 }
4508
4509 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4510 {
4511         struct iwl_priv *priv = hw->priv;
4512         unsigned long flags;
4513
4514         mutex_lock(&priv->mutex);
4515         IWL_DEBUG_MAC80211("enter\n");
4516
4517         priv->lq_mngr.lq_ready = 0;
4518         spin_lock_irqsave(&priv->lock, flags);
4519         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4520         spin_unlock_irqrestore(&priv->lock, flags);
4521
4522         iwl_reset_qos(priv);
4523
4524         cancel_delayed_work(&priv->post_associate);
4525
4526         spin_lock_irqsave(&priv->lock, flags);
4527         priv->assoc_id = 0;
4528         priv->assoc_capability = 0;
4529         priv->assoc_station_added = 0;
4530
4531         /* new association get rid of ibss beacon skb */
4532         if (priv->ibss_beacon)
4533                 dev_kfree_skb(priv->ibss_beacon);
4534
4535         priv->ibss_beacon = NULL;
4536
4537         priv->beacon_int = priv->hw->conf.beacon_int;
4538         priv->timestamp = 0;
4539         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4540                 priv->beacon_int = 0;
4541
4542         spin_unlock_irqrestore(&priv->lock, flags);
4543
4544         if (!iwl_is_ready_rf(priv)) {
4545                 IWL_DEBUG_MAC80211("leave - not ready\n");
4546                 mutex_unlock(&priv->mutex);
4547                 return;
4548         }
4549
4550         /* we are restarting association process
4551          * clear RXON_FILTER_ASSOC_MSK bit
4552          */
4553         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4554                 iwl4965_scan_cancel_timeout(priv, 100);
4555                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4556                 iwl4965_commit_rxon(priv);
4557         }
4558
4559         iwl_power_update_mode(priv, 0);
4560
4561         /* Per mac80211.h: This is only used in IBSS mode... */
4562         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4563
4564                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4565                 mutex_unlock(&priv->mutex);
4566                 return;
4567         }
4568
4569         iwl4965_set_rate(priv);
4570
4571         mutex_unlock(&priv->mutex);
4572
4573         IWL_DEBUG_MAC80211("leave\n");
4574 }
4575
4576 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4577 {
4578         struct iwl_priv *priv = hw->priv;
4579         unsigned long flags;
4580
4581         mutex_lock(&priv->mutex);
4582         IWL_DEBUG_MAC80211("enter\n");
4583
4584         if (!iwl_is_ready_rf(priv)) {
4585                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4586                 mutex_unlock(&priv->mutex);
4587                 return -EIO;
4588         }
4589
4590         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4591                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4592                 mutex_unlock(&priv->mutex);
4593                 return -EIO;
4594         }
4595
4596         spin_lock_irqsave(&priv->lock, flags);
4597
4598         if (priv->ibss_beacon)
4599                 dev_kfree_skb(priv->ibss_beacon);
4600
4601         priv->ibss_beacon = skb;
4602
4603         priv->assoc_id = 0;
4604
4605         IWL_DEBUG_MAC80211("leave\n");
4606         spin_unlock_irqrestore(&priv->lock, flags);
4607
4608         iwl_reset_qos(priv);
4609
4610         queue_work(priv->workqueue, &priv->post_associate.work);
4611
4612         mutex_unlock(&priv->mutex);
4613
4614         return 0;
4615 }
4616
4617 /*****************************************************************************
4618  *
4619  * sysfs attributes
4620  *
4621  *****************************************************************************/
4622
4623 #ifdef CONFIG_IWLWIFI_DEBUG
4624
4625 /*
4626  * The following adds a new attribute to the sysfs representation
4627  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4628  * used for controlling the debug level.
4629  *
4630  * See the level definitions in iwl for details.
4631  */
4632
4633 static ssize_t show_debug_level(struct device *d,
4634                                 struct device_attribute *attr, char *buf)
4635 {
4636         struct iwl_priv *priv = d->driver_data;
4637
4638         return sprintf(buf, "0x%08X\n", priv->debug_level);
4639 }
4640 static ssize_t store_debug_level(struct device *d,
4641                                 struct device_attribute *attr,
4642                                  const char *buf, size_t count)
4643 {
4644         struct iwl_priv *priv = d->driver_data;
4645         char *p = (char *)buf;
4646         u32 val;
4647
4648         val = simple_strtoul(p, &p, 0);
4649         if (p == buf)
4650                 printk(KERN_INFO DRV_NAME
4651                        ": %s is not in hex or decimal form.\n", buf);
4652         else
4653                 priv->debug_level = val;
4654
4655         return strnlen(buf, count);
4656 }
4657
4658 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4659                         show_debug_level, store_debug_level);
4660
4661
4662 #endif /* CONFIG_IWLWIFI_DEBUG */
4663
4664
4665 static ssize_t show_version(struct device *d,
4666                                 struct device_attribute *attr, char *buf)
4667 {
4668         struct iwl_priv *priv = d->driver_data;
4669         struct iwl_alive_resp *palive = &priv->card_alive;
4670
4671         if (palive->is_valid)
4672                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
4673                                     "fw type: 0x%01X 0x%01X\n",
4674                                 palive->ucode_major, palive->ucode_minor,
4675                                 palive->sw_rev[0], palive->sw_rev[1],
4676                                 palive->ver_type, palive->ver_subtype);
4677
4678         else
4679                 return sprintf(buf, "fw not loaded\n");
4680 }
4681
4682 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
4683
4684 static ssize_t show_temperature(struct device *d,
4685                                 struct device_attribute *attr, char *buf)
4686 {
4687         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4688
4689         if (!iwl_is_alive(priv))
4690                 return -EAGAIN;
4691
4692         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
4693 }
4694
4695 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4696
4697 static ssize_t show_rs_window(struct device *d,
4698                               struct device_attribute *attr,
4699                               char *buf)
4700 {
4701         struct iwl_priv *priv = d->driver_data;
4702         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
4703 }
4704 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
4705
4706 static ssize_t show_tx_power(struct device *d,
4707                              struct device_attribute *attr, char *buf)
4708 {
4709         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4710         return sprintf(buf, "%d\n", priv->user_txpower_limit);
4711 }
4712
4713 static ssize_t store_tx_power(struct device *d,
4714                               struct device_attribute *attr,
4715                               const char *buf, size_t count)
4716 {
4717         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4718         char *p = (char *)buf;
4719         u32 val;
4720
4721         val = simple_strtoul(p, &p, 10);
4722         if (p == buf)
4723                 printk(KERN_INFO DRV_NAME
4724                        ": %s is not in decimal form.\n", buf);
4725         else
4726                 iwl4965_hw_reg_set_txpower(priv, val);
4727
4728         return count;
4729 }
4730
4731 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4732
4733 static ssize_t show_flags(struct device *d,
4734                           struct device_attribute *attr, char *buf)
4735 {
4736         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4737
4738         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4739 }
4740
4741 static ssize_t store_flags(struct device *d,
4742                            struct device_attribute *attr,
4743                            const char *buf, size_t count)
4744 {
4745         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4746         u32 flags = simple_strtoul(buf, NULL, 0);
4747
4748         mutex_lock(&priv->mutex);
4749         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4750                 /* Cancel any currently running scans... */
4751                 if (iwl4965_scan_cancel_timeout(priv, 100))
4752                         IWL_WARNING("Could not cancel scan.\n");
4753                 else {
4754                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4755                                        flags);
4756                         priv->staging_rxon.flags = cpu_to_le32(flags);
4757                         iwl4965_commit_rxon(priv);
4758                 }
4759         }
4760         mutex_unlock(&priv->mutex);
4761
4762         return count;
4763 }
4764
4765 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4766
4767 static ssize_t show_filter_flags(struct device *d,
4768                                  struct device_attribute *attr, char *buf)
4769 {
4770         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4771
4772         return sprintf(buf, "0x%04X\n",
4773                 le32_to_cpu(priv->active_rxon.filter_flags));
4774 }
4775
4776 static ssize_t store_filter_flags(struct device *d,
4777                                   struct device_attribute *attr,
4778                                   const char *buf, size_t count)
4779 {
4780         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4781         u32 filter_flags = simple_strtoul(buf, NULL, 0);
4782
4783         mutex_lock(&priv->mutex);
4784         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4785                 /* Cancel any currently running scans... */
4786                 if (iwl4965_scan_cancel_timeout(priv, 100))
4787                         IWL_WARNING("Could not cancel scan.\n");
4788                 else {
4789                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
4790                                        "0x%04X\n", filter_flags);
4791                         priv->staging_rxon.filter_flags =
4792                                 cpu_to_le32(filter_flags);
4793                         iwl4965_commit_rxon(priv);
4794                 }
4795         }
4796         mutex_unlock(&priv->mutex);
4797
4798         return count;
4799 }
4800
4801 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4802                    store_filter_flags);
4803
4804 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4805
4806 static ssize_t show_measurement(struct device *d,
4807                                 struct device_attribute *attr, char *buf)
4808 {
4809         struct iwl_priv *priv = dev_get_drvdata(d);
4810         struct iwl4965_spectrum_notification measure_report;
4811         u32 size = sizeof(measure_report), len = 0, ofs = 0;
4812         u8 *data = (u8 *) & measure_report;
4813         unsigned long flags;
4814
4815         spin_lock_irqsave(&priv->lock, flags);
4816         if (!(priv->measurement_status & MEASUREMENT_READY)) {
4817                 spin_unlock_irqrestore(&priv->lock, flags);
4818                 return 0;
4819         }
4820         memcpy(&measure_report, &priv->measure_report, size);
4821         priv->measurement_status = 0;
4822         spin_unlock_irqrestore(&priv->lock, flags);
4823
4824         while (size && (PAGE_SIZE - len)) {
4825                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4826                                    PAGE_SIZE - len, 1);
4827                 len = strlen(buf);
4828                 if (PAGE_SIZE - len)
4829                         buf[len++] = '\n';
4830
4831                 ofs += 16;
4832                 size -= min(size, 16U);
4833         }
4834
4835         return len;
4836 }
4837
4838 static ssize_t store_measurement(struct device *d,
4839                                  struct device_attribute *attr,
4840                                  const char *buf, size_t count)
4841 {
4842         struct iwl_priv *priv = dev_get_drvdata(d);
4843         struct ieee80211_measurement_params params = {
4844                 .channel = le16_to_cpu(priv->active_rxon.channel),
4845                 .start_time = cpu_to_le64(priv->last_tsf),
4846                 .duration = cpu_to_le16(1),
4847         };
4848         u8 type = IWL_MEASURE_BASIC;
4849         u8 buffer[32];
4850         u8 channel;
4851
4852         if (count) {
4853                 char *p = buffer;
4854                 strncpy(buffer, buf, min(sizeof(buffer), count));
4855                 channel = simple_strtoul(p, NULL, 0);
4856                 if (channel)
4857                         params.channel = channel;
4858
4859                 p = buffer;
4860                 while (*p && *p != ' ')
4861                         p++;
4862                 if (*p)
4863                         type = simple_strtoul(p + 1, NULL, 0);
4864         }
4865
4866         IWL_DEBUG_INFO("Invoking measurement of type %d on "
4867                        "channel %d (for '%s')\n", type, params.channel, buf);
4868         iwl4965_get_measurement(priv, &params, type);
4869
4870         return count;
4871 }
4872
4873 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4874                    show_measurement, store_measurement);
4875 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4876
4877 static ssize_t store_retry_rate(struct device *d,
4878                                 struct device_attribute *attr,
4879                                 const char *buf, size_t count)
4880 {
4881         struct iwl_priv *priv = dev_get_drvdata(d);
4882
4883         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4884         if (priv->retry_rate <= 0)
4885                 priv->retry_rate = 1;
4886
4887         return count;
4888 }
4889
4890 static ssize_t show_retry_rate(struct device *d,
4891                                struct device_attribute *attr, char *buf)
4892 {
4893         struct iwl_priv *priv = dev_get_drvdata(d);
4894         return sprintf(buf, "%d", priv->retry_rate);
4895 }
4896
4897 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4898                    store_retry_rate);
4899
4900 static ssize_t store_power_level(struct device *d,
4901                                  struct device_attribute *attr,
4902                                  const char *buf, size_t count)
4903 {
4904         struct iwl_priv *priv = dev_get_drvdata(d);
4905         int rc;
4906         int mode;
4907
4908         mode = simple_strtoul(buf, NULL, 0);
4909         mutex_lock(&priv->mutex);
4910
4911         if (!iwl_is_ready(priv)) {
4912                 rc = -EAGAIN;
4913                 goto out;
4914         }
4915
4916         rc = iwl_power_set_user_mode(priv, mode);
4917         if (rc) {
4918                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4919                 goto out;
4920         }
4921         rc = count;
4922
4923  out:
4924         mutex_unlock(&priv->mutex);
4925         return rc;
4926 }
4927
4928 #define MAX_WX_STRING 80
4929
4930 /* Values are in microsecond */
4931 static const s32 timeout_duration[] = {
4932         350000,
4933         250000,
4934         75000,
4935         37000,
4936         25000,
4937 };
4938 static const s32 period_duration[] = {
4939         400000,
4940         700000,
4941         1000000,
4942         1000000,
4943         1000000
4944 };
4945
4946 static ssize_t show_power_level(struct device *d,
4947                                 struct device_attribute *attr, char *buf)
4948 {
4949         struct iwl_priv *priv = dev_get_drvdata(d);
4950         int level = priv->power_data.power_mode;
4951         char *p = buf;
4952
4953         p += sprintf(p, "%d ", level);
4954         switch (level) {
4955         case IWL_POWER_MODE_CAM:
4956         case IWL_POWER_AC:
4957                 p += sprintf(p, "(AC)");
4958                 break;
4959         case IWL_POWER_BATTERY:
4960                 p += sprintf(p, "(BATTERY)");
4961                 break;
4962         default:
4963                 p += sprintf(p,
4964                              "(Timeout %dms, Period %dms)",
4965                              timeout_duration[level - 1] / 1000,
4966                              period_duration[level - 1] / 1000);
4967         }
4968 /*
4969         if (!(priv->power_mode & IWL_POWER_ENABLED))
4970                 p += sprintf(p, " OFF\n");
4971         else
4972                 p += sprintf(p, " \n");
4973 */
4974         p += sprintf(p, " \n");
4975         return (p - buf + 1);
4976 }
4977
4978 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4979                    store_power_level);
4980
4981 static ssize_t show_channels(struct device *d,
4982                              struct device_attribute *attr, char *buf)
4983 {
4984         /* all this shit doesn't belong into sysfs anyway */
4985         return 0;
4986 }
4987
4988 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4989
4990 static ssize_t show_statistics(struct device *d,
4991                                struct device_attribute *attr, char *buf)
4992 {
4993         struct iwl_priv *priv = dev_get_drvdata(d);
4994         u32 size = sizeof(struct iwl4965_notif_statistics);
4995         u32 len = 0, ofs = 0;
4996         u8 *data = (u8 *) & priv->statistics;
4997         int rc = 0;
4998
4999         if (!iwl_is_alive(priv))
5000                 return -EAGAIN;
5001
5002         mutex_lock(&priv->mutex);
5003         rc = iwl_send_statistics_request(priv, 0);
5004         mutex_unlock(&priv->mutex);
5005
5006         if (rc) {
5007                 len = sprintf(buf,
5008                               "Error sending statistics request: 0x%08X\n", rc);
5009                 return len;
5010         }
5011
5012         while (size && (PAGE_SIZE - len)) {
5013                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5014                                    PAGE_SIZE - len, 1);
5015                 len = strlen(buf);
5016                 if (PAGE_SIZE - len)
5017                         buf[len++] = '\n';
5018
5019                 ofs += 16;
5020                 size -= min(size, 16U);
5021         }
5022
5023         return len;
5024 }
5025
5026 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5027
5028 static ssize_t show_status(struct device *d,
5029                            struct device_attribute *attr, char *buf)
5030 {
5031         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5032         if (!iwl_is_alive(priv))
5033                 return -EAGAIN;
5034         return sprintf(buf, "0x%08x\n", (int)priv->status);
5035 }
5036
5037 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5038
5039 /*****************************************************************************
5040  *
5041  * driver setup and teardown
5042  *
5043  *****************************************************************************/
5044
5045 static void iwl_setup_deferred_work(struct iwl_priv *priv)
5046 {
5047         priv->workqueue = create_workqueue(DRV_NAME);
5048
5049         init_waitqueue_head(&priv->wait_command_queue);
5050
5051         INIT_WORK(&priv->up, iwl4965_bg_up);
5052         INIT_WORK(&priv->restart, iwl4965_bg_restart);
5053         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5054         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5055         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5056         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5057         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5058         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5059         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5060         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
5061         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5062         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5063         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5064         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5065
5066         if (priv->cfg->ops->lib->setup_deferred_work)
5067                 priv->cfg->ops->lib->setup_deferred_work(priv);
5068
5069         init_timer(&priv->statistics_periodic);
5070         priv->statistics_periodic.data = (unsigned long)priv;
5071         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
5072
5073         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5074                      iwl4965_irq_tasklet, (unsigned long)priv);
5075 }
5076
5077 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
5078 {
5079         if (priv->cfg->ops->lib->cancel_deferred_work)
5080                 priv->cfg->ops->lib->cancel_deferred_work(priv);
5081
5082         cancel_delayed_work_sync(&priv->init_alive_start);
5083         cancel_delayed_work(&priv->scan_check);
5084         cancel_delayed_work(&priv->alive_start);
5085         cancel_delayed_work(&priv->post_associate);
5086         cancel_work_sync(&priv->beacon_update);
5087         del_timer_sync(&priv->statistics_periodic);
5088 }
5089
5090 static struct attribute *iwl4965_sysfs_entries[] = {
5091         &dev_attr_channels.attr,
5092         &dev_attr_flags.attr,
5093         &dev_attr_filter_flags.attr,
5094 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5095         &dev_attr_measurement.attr,
5096 #endif
5097         &dev_attr_power_level.attr,
5098         &dev_attr_retry_rate.attr,
5099         &dev_attr_rs_window.attr,
5100         &dev_attr_statistics.attr,
5101         &dev_attr_status.attr,
5102         &dev_attr_temperature.attr,
5103         &dev_attr_tx_power.attr,
5104 #ifdef CONFIG_IWLWIFI_DEBUG
5105         &dev_attr_debug_level.attr,
5106 #endif
5107         &dev_attr_version.attr,
5108
5109         NULL
5110 };
5111
5112 static struct attribute_group iwl4965_attribute_group = {
5113         .name = NULL,           /* put in device directory */
5114         .attrs = iwl4965_sysfs_entries,
5115 };
5116
5117 static struct ieee80211_ops iwl4965_hw_ops = {
5118         .tx = iwl4965_mac_tx,
5119         .start = iwl4965_mac_start,
5120         .stop = iwl4965_mac_stop,
5121         .add_interface = iwl4965_mac_add_interface,
5122         .remove_interface = iwl4965_mac_remove_interface,
5123         .config = iwl4965_mac_config,
5124         .config_interface = iwl4965_mac_config_interface,
5125         .configure_filter = iwl4965_configure_filter,
5126         .set_key = iwl4965_mac_set_key,
5127         .update_tkip_key = iwl4965_mac_update_tkip_key,
5128         .get_stats = iwl4965_mac_get_stats,
5129         .get_tx_stats = iwl4965_mac_get_tx_stats,
5130         .conf_tx = iwl4965_mac_conf_tx,
5131         .get_tsf = iwl4965_mac_get_tsf,
5132         .reset_tsf = iwl4965_mac_reset_tsf,
5133         .beacon_update = iwl4965_mac_beacon_update,
5134         .bss_info_changed = iwl4965_bss_info_changed,
5135         .ampdu_action = iwl4965_mac_ampdu_action,
5136         .hw_scan = iwl4965_mac_hw_scan
5137 };
5138
5139 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5140 {
5141         int err = 0;
5142         struct iwl_priv *priv;
5143         struct ieee80211_hw *hw;
5144         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5145         unsigned long flags;
5146         DECLARE_MAC_BUF(mac);
5147
5148         /************************
5149          * 1. Allocating HW data
5150          ************************/
5151
5152         /* Disabling hardware scan means that mac80211 will perform scans
5153          * "the hard way", rather than using device's scan. */
5154         if (cfg->mod_params->disable_hw_scan) {
5155                 if (cfg->mod_params->debug & IWL_DL_INFO)
5156                         dev_printk(KERN_DEBUG, &(pdev->dev),
5157                                    "Disabling hw_scan\n");
5158                 iwl4965_hw_ops.hw_scan = NULL;
5159         }
5160
5161         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5162         if (!hw) {
5163                 err = -ENOMEM;
5164                 goto out;
5165         }
5166         priv = hw->priv;
5167         /* At this point both hw and priv are allocated. */
5168
5169         SET_IEEE80211_DEV(hw, &pdev->dev);
5170
5171         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5172         priv->cfg = cfg;
5173         priv->pci_dev = pdev;
5174
5175 #ifdef CONFIG_IWLWIFI_DEBUG
5176         priv->debug_level = priv->cfg->mod_params->debug;
5177         atomic_set(&priv->restrict_refcnt, 0);
5178 #endif
5179
5180         /**************************
5181          * 2. Initializing PCI bus
5182          **************************/
5183         if (pci_enable_device(pdev)) {
5184                 err = -ENODEV;
5185                 goto out_ieee80211_free_hw;
5186         }
5187
5188         pci_set_master(pdev);
5189
5190         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5191         if (!err)
5192                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5193         if (err) {
5194                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5195                 if (!err)
5196                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5197                 /* both attempts failed: */
5198                 if (err) {
5199                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
5200                                 DRV_NAME);
5201                         goto out_pci_disable_device;
5202                 }
5203         }
5204
5205         err = pci_request_regions(pdev, DRV_NAME);
5206         if (err)
5207                 goto out_pci_disable_device;
5208
5209         pci_set_drvdata(pdev, priv);
5210
5211         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5212          * PCI Tx retries from interfering with C3 CPU state */
5213         pci_write_config_byte(pdev, 0x41, 0x00);
5214
5215         /***********************
5216          * 3. Read REV register
5217          ***********************/
5218         priv->hw_base = pci_iomap(pdev, 0, 0);
5219         if (!priv->hw_base) {
5220                 err = -ENODEV;
5221                 goto out_pci_release_regions;
5222         }
5223
5224         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5225                 (unsigned long long) pci_resource_len(pdev, 0));
5226         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5227
5228         iwl_hw_detect(priv);
5229         printk(KERN_INFO DRV_NAME
5230                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5231                 priv->cfg->name, priv->hw_rev);
5232
5233         /* amp init */
5234         err = priv->cfg->ops->lib->apm_ops.init(priv);
5235         if (err < 0) {
5236                 IWL_DEBUG_INFO("Failed to init APMG\n");
5237                 goto out_iounmap;
5238         }
5239         /*****************
5240          * 4. Read EEPROM
5241          *****************/
5242         /* Read the EEPROM */
5243         err = iwl_eeprom_init(priv);
5244         if (err) {
5245                 IWL_ERROR("Unable to init EEPROM\n");
5246                 goto out_iounmap;
5247         }
5248         err = iwl_eeprom_check_version(priv);
5249         if (err)
5250                 goto out_iounmap;
5251
5252         /* extract MAC Address */
5253         iwl_eeprom_get_mac(priv, priv->mac_addr);
5254         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5255         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5256
5257         /************************
5258          * 5. Setup HW constants
5259          ************************/
5260         /* Device-specific setup */
5261         if (priv->cfg->ops->lib->set_hw_params(priv)) {
5262                 IWL_ERROR("failed to set hw parameters\n");
5263                 goto out_free_eeprom;
5264         }
5265
5266         /*******************
5267          * 6. Setup priv
5268          *******************/
5269
5270         err = iwl_init_drv(priv);
5271         if (err)
5272                 goto out_free_eeprom;
5273         /* At this point both hw and priv are initialized. */
5274
5275         /**********************************
5276          * 7. Initialize module parameters
5277          **********************************/
5278
5279         /* Disable radio (SW RF KILL) via parameter when loading driver */
5280         if (priv->cfg->mod_params->disable) {
5281                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5282                 IWL_DEBUG_INFO("Radio disabled.\n");
5283         }
5284
5285         /********************
5286          * 8. Setup services
5287          ********************/
5288         spin_lock_irqsave(&priv->lock, flags);
5289         iwl4965_disable_interrupts(priv);
5290         spin_unlock_irqrestore(&priv->lock, flags);
5291
5292         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5293         if (err) {
5294                 IWL_ERROR("failed to create sysfs device attributes\n");
5295                 goto out_uninit_drv;
5296         }
5297
5298
5299         iwl_setup_deferred_work(priv);
5300         iwl4965_setup_rx_handlers(priv);
5301
5302         /********************
5303          * 9. Conclude
5304          ********************/
5305         pci_save_state(pdev);
5306         pci_disable_device(pdev);
5307
5308         /**********************************
5309          * 10. Setup and register mac80211
5310          **********************************/
5311
5312         err = iwl_setup_mac(priv);
5313         if (err)
5314                 goto out_remove_sysfs;
5315
5316         err = iwl_dbgfs_register(priv, DRV_NAME);
5317         if (err)
5318                 IWL_ERROR("failed to create debugfs files\n");
5319
5320         /* notify iwlcore to init */
5321         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5322         return 0;
5323
5324  out_remove_sysfs:
5325         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5326  out_uninit_drv:
5327         iwl_uninit_drv(priv);
5328  out_free_eeprom:
5329         iwl_eeprom_free(priv);
5330  out_iounmap:
5331         pci_iounmap(pdev, priv->hw_base);
5332  out_pci_release_regions:
5333         pci_release_regions(pdev);
5334         pci_set_drvdata(pdev, NULL);
5335  out_pci_disable_device:
5336         pci_disable_device(pdev);
5337  out_ieee80211_free_hw:
5338         ieee80211_free_hw(priv->hw);
5339  out:
5340         return err;
5341 }
5342
5343 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5344 {
5345         struct iwl_priv *priv = pci_get_drvdata(pdev);
5346         struct list_head *p, *q;
5347         int i;
5348         unsigned long flags;
5349
5350         if (!priv)
5351                 return;
5352
5353         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5354
5355         iwl_dbgfs_unregister(priv);
5356         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5357
5358         if (priv->mac80211_registered) {
5359                 ieee80211_unregister_hw(priv->hw);
5360                 priv->mac80211_registered = 0;
5361         }
5362
5363         set_bit(STATUS_EXIT_PENDING, &priv->status);
5364
5365         iwl4965_down(priv);
5366
5367         /* make sure we flush any pending irq or
5368          * tasklet for the driver
5369          */
5370         spin_lock_irqsave(&priv->lock, flags);
5371         iwl4965_disable_interrupts(priv);
5372         spin_unlock_irqrestore(&priv->lock, flags);
5373
5374         iwl_synchronize_irq(priv);
5375
5376         /* Free MAC hash list for ADHOC */
5377         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5378                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5379                         list_del(p);
5380                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5381                 }
5382         }
5383
5384         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5385
5386         iwl4965_dealloc_ucode_pci(priv);
5387
5388         if (priv->rxq.bd)
5389                 iwl_rx_queue_free(priv, &priv->rxq);
5390         iwl_hw_txq_ctx_free(priv);
5391
5392         iwlcore_clear_stations_table(priv);
5393         iwl_eeprom_free(priv);
5394
5395
5396         /*netif_stop_queue(dev); */
5397         flush_workqueue(priv->workqueue);
5398
5399         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5400          * priv->workqueue... so we can't take down the workqueue
5401          * until now... */
5402         destroy_workqueue(priv->workqueue);
5403         priv->workqueue = NULL;
5404
5405         pci_iounmap(pdev, priv->hw_base);
5406         pci_release_regions(pdev);
5407         pci_disable_device(pdev);
5408         pci_set_drvdata(pdev, NULL);
5409
5410         iwl_uninit_drv(priv);
5411
5412         if (priv->ibss_beacon)
5413                 dev_kfree_skb(priv->ibss_beacon);
5414
5415         ieee80211_free_hw(priv->hw);
5416 }
5417
5418 #ifdef CONFIG_PM
5419
5420 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5421 {
5422         struct iwl_priv *priv = pci_get_drvdata(pdev);
5423
5424         if (priv->is_open) {
5425                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5426                 iwl4965_mac_stop(priv->hw);
5427                 priv->is_open = 1;
5428         }
5429
5430         pci_set_power_state(pdev, PCI_D3hot);
5431
5432         return 0;
5433 }
5434
5435 static int iwl4965_pci_resume(struct pci_dev *pdev)
5436 {
5437         struct iwl_priv *priv = pci_get_drvdata(pdev);
5438
5439         pci_set_power_state(pdev, PCI_D0);
5440
5441         if (priv->is_open)
5442                 iwl4965_mac_start(priv->hw);
5443
5444         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5445         return 0;
5446 }
5447
5448 #endif /* CONFIG_PM */
5449
5450 /*****************************************************************************
5451  *
5452  * driver and module entry point
5453  *
5454  *****************************************************************************/
5455
5456 /* Hardware specific file defines the PCI IDs table for that hardware module */
5457 static struct pci_device_id iwl_hw_card_ids[] = {
5458         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5459         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5460 #ifdef CONFIG_IWL5000
5461         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5462         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5463         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5464 #endif /* CONFIG_IWL5000 */
5465         {0}
5466 };
5467 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5468
5469 static struct pci_driver iwl_driver = {
5470         .name = DRV_NAME,
5471         .id_table = iwl_hw_card_ids,
5472         .probe = iwl4965_pci_probe,
5473         .remove = __devexit_p(iwl4965_pci_remove),
5474 #ifdef CONFIG_PM
5475         .suspend = iwl4965_pci_suspend,
5476         .resume = iwl4965_pci_resume,
5477 #endif
5478 };
5479
5480 static int __init iwl4965_init(void)
5481 {
5482
5483         int ret;
5484         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5485         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5486
5487         ret = iwl4965_rate_control_register();
5488         if (ret) {
5489                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5490                 return ret;
5491         }
5492
5493         ret = pci_register_driver(&iwl_driver);
5494         if (ret) {
5495                 IWL_ERROR("Unable to initialize PCI module\n");
5496                 goto error_register;
5497         }
5498
5499         return ret;
5500
5501 error_register:
5502         iwl4965_rate_control_unregister();
5503         return ret;
5504 }
5505
5506 static void __exit iwl4965_exit(void)
5507 {
5508         pci_unregister_driver(&iwl_driver);
5509         iwl4965_rate_control_unregister();
5510 }
5511
5512 module_exit(iwl4965_exit);
5513 module_init(iwl4965_init);