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