drivers/net/wireless/iwlwifi/iwl3945-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2009 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  *  Intel Linux Wireless <ilw@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/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/ieee80211_radiotap.h>
  44 #include <net/lib80211.h>
  45 #include <net/mac80211.h>
  46
  47 #include <asm/div64.h>
  48
  49 #define DRV_NAME        "iwl3945"
  50
  51 #include "iwl-fh.h"
  52 #include "iwl-3945-fh.h"
  53 #include "iwl-commands.h"
  54 #include "iwl-sta.h"
  55 #include "iwl-3945.h"
  56 #include "iwl-helpers.h"
  57 #include "iwl-core.h"
  58 #include "iwl-dev.h"
  59
  60 /*
  61  * module name, copyright, version, etc.
  62  */
  63
  64 #define DRV_DESCRIPTION \
  65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  66
  67 #ifdef CONFIG_IWLWIFI_DEBUG
  68 #define VD "d"
  69 #else
  70 #define VD
  71 #endif
  72
  73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  74 #define VS "s"
  75 #else
  76 #define VS
  77 #endif
  78
  79 #define IWL39_VERSION "1.2.26k" VD VS
  80 #define DRV_COPYRIGHT   "Copyright(c) 2003-2009 Intel Corporation"
  81 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  82 #define DRV_VERSION     IWL39_VERSION
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  88 MODULE_LICENSE("GPL");
  89
  90  /* module parameters */
  91 struct iwl_mod_params iwl3945_mod_params = {
  92         .num_of_queues = IWL39_MAX_NUM_QUEUES,
  93         .sw_crypto = 1,
  94         .restart_fw = 1,
  95         /* the rest are 0 by default */
  96 };
  97
  98 /*************** STATION TABLE MANAGEMENT ****
  99  * mac80211 should be examined to determine if sta_info is duplicating
 100  * the functionality provided here
 101  */
 102
 103 /**************************************************************/
 104 #if 0 /* temporary disable till we add real remove station */
 105 /**
 106  * iwl3945_remove_station - Remove driver's knowledge of station.
 107  *
 108  * NOTE:  This does not remove station from device's station table.
 109  */
 110 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 111 {
 112         int index = IWL_INVALID_STATION;
 113         int i;
 114         unsigned long flags;
 115
 116         spin_lock_irqsave(&priv->sta_lock, flags);
 117
 118         if (is_ap)
 119                 index = IWL_AP_ID;
 120         else if (is_broadcast_ether_addr(addr))
 121                 index = priv->hw_params.bcast_sta_id;
 122         else
 123                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
 124                         if (priv->stations_39[i].used &&
 125                             !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 126                                                 addr)) {
 127                                 index = i;
 128                                 break;
 129                         }
 130
 131         if (unlikely(index == IWL_INVALID_STATION))
 132                 goto out;
 133
 134         if (priv->stations_39[index].used) {
 135                 priv->stations_39[index].used = 0;
 136                 priv->num_stations--;
 137         }
 138
 139         BUG_ON(priv->num_stations < 0);
 140
 141 out:
 142         spin_unlock_irqrestore(&priv->sta_lock, flags);
 143         return 0;
 144 }
 145 #endif
 146
 147 /**
 148  * iwl3945_clear_stations_table - Clear the driver's station table
 149  *
 150  * NOTE:  This does not clear or otherwise alter the device's station table.
 151  */
 152 static void iwl3945_clear_stations_table(struct iwl_priv *priv)
 153 {
 154         unsigned long flags;
 155
 156         spin_lock_irqsave(&priv->sta_lock, flags);
 157
 158         priv->num_stations = 0;
 159         memset(priv->stations_39, 0, sizeof(priv->stations_39));
 160
 161         spin_unlock_irqrestore(&priv->sta_lock, flags);
 162 }
 163
 164 /**
 165  * iwl3945_add_station - Add station to station tables in driver and device
 166  */
 167 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
 168 {
 169         int i;
 170         int index = IWL_INVALID_STATION;
 171         struct iwl3945_station_entry *station;
 172         unsigned long flags_spin;
 173         u8 rate;
 174
 175         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 176         if (is_ap)
 177                 index = IWL_AP_ID;
 178         else if (is_broadcast_ether_addr(addr))
 179                 index = priv->hw_params.bcast_sta_id;
 180         else
 181                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
 182                         if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 183                                                 addr)) {
 184                                 index = i;
 185                                 break;
 186                         }
 187
 188                         if (!priv->stations_39[i].used &&
 189                             index == IWL_INVALID_STATION)
 190                                 index = i;
 191                 }
 192
 193         /* These two conditions has the same outcome but keep them separate
 194           since they have different meaning */
 195         if (unlikely(index == IWL_INVALID_STATION)) {
 196                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 197                 return index;
 198         }
 199
 200         if (priv->stations_39[index].used &&
 201            !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
 202                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 203                 return index;
 204         }
 205
 206         IWL_DEBUG_ASSOC(priv, "Add STA ID %d: %pM\n", index, addr);
 207         station = &priv->stations_39[index];
 208         station->used = 1;
 209         priv->num_stations++;
 210
 211         /* Set up the REPLY_ADD_STA command to send to device */
 212         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 213         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 214         station->sta.mode = 0;
 215         station->sta.sta.sta_id = index;
 216         station->sta.station_flags = 0;
 217
 218         if (priv->band == IEEE80211_BAND_5GHZ)
 219                 rate = IWL_RATE_6M_PLCP;
 220         else
 221                 rate =  IWL_RATE_1M_PLCP;
 222
 223         /* Turn on both antennas for the station... */
 224         station->sta.rate_n_flags =
 225                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 226
 227         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 228
 229         /* Add station to device's station table */
 230         iwl_send_add_sta(priv,
 231                          (struct iwl_addsta_cmd *)&station->sta, flags);
 232         return index;
 233
 234 }
 235
 236 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
 237 {
 238         int rc = 0;
 239         struct iwl_rx_packet *res = NULL;
 240         struct iwl3945_rxon_assoc_cmd rxon_assoc;
 241         struct iwl_host_cmd cmd = {
 242                 .id = REPLY_RXON_ASSOC,
 243                 .len = sizeof(rxon_assoc),
 244                 .meta.flags = CMD_WANT_SKB,
 245                 .data = &rxon_assoc,
 246         };
 247         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
 248         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
 249
 250         if ((rxon1->flags == rxon2->flags) &&
 251             (rxon1->filter_flags == rxon2->filter_flags) &&
 252             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 253             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 254                 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
 255                 return 0;
 256         }
 257
 258         rxon_assoc.flags = priv->staging_rxon.flags;
 259         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
 260         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
 261         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
 262         rxon_assoc.reserved = 0;
 263
 264         rc = iwl_send_cmd_sync(priv, &cmd);
 265         if (rc)
 266                 return rc;
 267
 268         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 269         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 270                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
 271                 rc = -EIO;
 272         }
 273
 274         priv->alloc_rxb_skb--;
 275         dev_kfree_skb_any(cmd.meta.u.skb);
 276
 277         return rc;
 278 }
 279
 280 /**
 281  * iwl3945_get_antenna_flags - Get antenna flags for RXON command
 282  * @priv: eeprom and antenna fields are used to determine antenna flags
 283  *
 284  * priv->eeprom39  is used to determine if antenna AUX/MAIN are reversed
 285  * iwl3945_mod_params.antenna specifies the antenna diversity mode:
 286  *
 287  * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
 288  * IWL_ANTENNA_MAIN      - Force MAIN antenna
 289  * IWL_ANTENNA_AUX       - Force AUX antenna
 290  */
 291 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
 292 {
 293         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
 294
 295         switch (iwl3945_mod_params.antenna) {
 296         case IWL_ANTENNA_DIVERSITY:
 297                 return 0;
 298
 299         case IWL_ANTENNA_MAIN:
 300                 if (eeprom->antenna_switch_type)
 301                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
 302                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
 303
 304         case IWL_ANTENNA_AUX:
 305                 if (eeprom->antenna_switch_type)
 306                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
 307                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
 308         }
 309
 310         /* bad antenna selector value */
 311         IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
 312                 iwl3945_mod_params.antenna);
 313
 314         return 0;               /* "diversity" is default if error */
 315 }
 316
 317 /**
 318  * iwl3945_commit_rxon - commit staging_rxon to hardware
 319  *
 320  * The RXON command in staging_rxon is committed to the hardware and
 321  * the active_rxon structure is updated with the new data.  This
 322  * function correctly transitions out of the RXON_ASSOC_MSK state if
 323  * a HW tune is required based on the RXON structure changes.
 324  */
 325 static int iwl3945_commit_rxon(struct iwl_priv *priv)
 326 {
 327         /* cast away the const for active_rxon in this function */
 328         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 329         struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon;
 330         int rc = 0;
 331
 332         if (!iwl_is_alive(priv))
 333                 return -1;
 334
 335         /* always get timestamp with Rx frame */
 336         staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
 337
 338         /* select antenna */
 339         staging_rxon->flags &=
 340             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
 341         staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
 342
 343         rc = iwl_check_rxon_cmd(priv);
 344         if (rc) {
 345                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 346                 return -EINVAL;
 347         }
 348
 349         /* If we don't need to send a full RXON, we can use
 350          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
 351          * and other flags for the current radio configuration. */
 352         if (!iwl_full_rxon_required(priv)) {
 353                 rc = iwl3945_send_rxon_assoc(priv);
 354                 if (rc) {
 355                         IWL_ERR(priv, "Error setting RXON_ASSOC "
 356                                   "configuration (%d).\n", rc);
 357                         return rc;
 358                 }
 359
 360                 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
 361
 362                 return 0;
 363         }
 364
 365         /* If we are currently associated and the new config requires
 366          * an RXON_ASSOC and the new config wants the associated mask enabled,
 367          * we must clear the associated from the active configuration
 368          * before we apply the new config */
 369         if (iwl_is_associated(priv) &&
 370             (staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK)) {
 371                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 372                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 373
 374                 /*
 375                  * reserved4 and 5 could have been filled by the iwlcore code.
 376                  * Let's clear them before pushing to the 3945.
 377                  */
 378                 active_rxon->reserved4 = 0;
 379                 active_rxon->reserved5 = 0;
 380                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 381                                       sizeof(struct iwl3945_rxon_cmd),
 382                                       &priv->active_rxon);
 383
 384                 /* If the mask clearing failed then we set
 385                  * active_rxon back to what it was previously */
 386                 if (rc) {
 387                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 388                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
 389                                   "configuration (%d).\n", rc);
 390                         return rc;
 391                 }
 392         }
 393
 394         IWL_DEBUG_INFO(priv, "Sending RXON\n"
 395                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 396                        "* channel = %d\n"
 397                        "* bssid = %pM\n",
 398                        ((priv->staging_rxon.filter_flags &
 399                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 400                        le16_to_cpu(staging_rxon->channel),
 401                        staging_rxon->bssid_addr);
 402
 403         /*
 404          * reserved4 and 5 could have been filled by the iwlcore code.
 405          * Let's clear them before pushing to the 3945.
 406          */
 407         staging_rxon->reserved4 = 0;
 408         staging_rxon->reserved5 = 0;
 409
 410         /* Apply the new configuration */
 411         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 412                               sizeof(struct iwl3945_rxon_cmd),
 413                               staging_rxon);
 414         if (rc) {
 415                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
 416                 return rc;
 417         }
 418
 419         memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
 420
 421         iwl3945_clear_stations_table(priv);
 422
 423         /* If we issue a new RXON command which required a tune then we must
 424          * send a new TXPOWER command or we won't be able to Tx any frames */
 425         rc = priv->cfg->ops->lib->send_tx_power(priv);
 426         if (rc) {
 427                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
 428                 return rc;
 429         }
 430
 431         /* Add the broadcast address so we can send broadcast frames */
 432         if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
 433             IWL_INVALID_STATION) {
 434                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
 435                 return -EIO;
 436         }
 437
 438         /* If we have set the ASSOC_MSK and we are in BSS mode then
 439          * add the IWL_AP_ID to the station rate table */
 440         if (iwl_is_associated(priv) &&
 441             (priv->iw_mode == NL80211_IFTYPE_STATION))
 442                 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr,
 443                                         1, 0)
 444                     == IWL_INVALID_STATION) {
 445                         IWL_ERR(priv, "Error adding AP address for transmit\n");
 446                         return -EIO;
 447                 }
 448
 449         /* Init the hardware's rate fallback order based on the band */
 450         rc = iwl3945_init_hw_rate_table(priv);
 451         if (rc) {
 452                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
 453                 return -EIO;
 454         }
 455
 456         return 0;
 457 }
 458
 459 static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
 460                                    struct ieee80211_key_conf *keyconf,
 461                                    u8 sta_id)
 462 {
 463         unsigned long flags;
 464         __le16 key_flags = 0;
 465
 466         switch (keyconf->alg) {
 467         case ALG_CCMP:
 468                 key_flags |= STA_KEY_FLG_CCMP;
 469                 key_flags |= cpu_to_le16(
 470                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
 471                 key_flags &= ~STA_KEY_FLG_INVALID;
 472                 break;
 473         case ALG_TKIP:
 474         case ALG_WEP:
 475         default:
 476                 return -EINVAL;
 477         }
 478         spin_lock_irqsave(&priv->sta_lock, flags);
 479         priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
 480         priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
 481         memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
 482                keyconf->keylen);
 483
 484         memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
 485                keyconf->keylen);
 486         priv->stations_39[sta_id].sta.key.key_flags = key_flags;
 487         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 488         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 489
 490         spin_unlock_irqrestore(&priv->sta_lock, flags);
 491
 492         IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
 493         iwl_send_add_sta(priv,
 494                 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
 495         return 0;
 496 }
 497
 498 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
 499 {
 500         unsigned long flags;
 501
 502         spin_lock_irqsave(&priv->sta_lock, flags);
 503         memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
 504         memset(&priv->stations_39[sta_id].sta.key, 0,
 505                 sizeof(struct iwl4965_keyinfo));
 506         priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
 507         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 508         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 509         spin_unlock_irqrestore(&priv->sta_lock, flags);
 510
 511         IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
 512         iwl_send_add_sta(priv,
 513                 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
 514         return 0;
 515 }
 516
 517 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
 518 {
 519         struct list_head *element;
 520
 521         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
 522                        priv->frames_count);
 523
 524         while (!list_empty(&priv->free_frames)) {
 525                 element = priv->free_frames.next;
 526                 list_del(element);
 527                 kfree(list_entry(element, struct iwl3945_frame, list));
 528                 priv->frames_count--;
 529         }
 530
 531         if (priv->frames_count) {
 532                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 533                             priv->frames_count);
 534                 priv->frames_count = 0;
 535         }
 536 }
 537
 538 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
 539 {
 540         struct iwl3945_frame *frame;
 541         struct list_head *element;
 542         if (list_empty(&priv->free_frames)) {
 543                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 544                 if (!frame) {
 545                         IWL_ERR(priv, "Could not allocate frame!\n");
 546                         return NULL;
 547                 }
 548
 549                 priv->frames_count++;
 550                 return frame;
 551         }
 552
 553         element = priv->free_frames.next;
 554         list_del(element);
 555         return list_entry(element, struct iwl3945_frame, list);
 556 }
 557
 558 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
 559 {
 560         memset(frame, 0, sizeof(*frame));
 561         list_add(&frame->list, &priv->free_frames);
 562 }
 563
 564 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
 565                                 struct ieee80211_hdr *hdr,
 566                                 int left)
 567 {
 568
 569         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 570             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 571              (priv->iw_mode != NL80211_IFTYPE_AP)))
 572                 return 0;
 573
 574         if (priv->ibss_beacon->len > left)
 575                 return 0;
 576
 577         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 578
 579         return priv->ibss_beacon->len;
 580 }
 581
 582 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
 583 {
 584         struct iwl3945_frame *frame;
 585         unsigned int frame_size;
 586         int rc;
 587         u8 rate;
 588
 589         frame = iwl3945_get_free_frame(priv);
 590
 591         if (!frame) {
 592                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 593                           "command.\n");
 594                 return -ENOMEM;
 595         }
 596
 597         rate = iwl_rate_get_lowest_plcp(priv);
 598
 599         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
 600
 601         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 602                               &frame->u.cmd[0]);
 603
 604         iwl3945_free_frame(priv, frame);
 605
 606         return rc;
 607 }
 608
 609 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
 610 {
 611         if (priv->shared_virt)
 612                 pci_free_consistent(priv->pci_dev,
 613                                     sizeof(struct iwl3945_shared),
 614                                     priv->shared_virt,
 615                                     priv->shared_phys);
 616 }
 617
 618 /*
 619  * QoS  support
 620 */
 621 static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
 622                                        struct iwl_qosparam_cmd *qos)
 623 {
 624
 625         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 626                                 sizeof(struct iwl_qosparam_cmd), qos);
 627 }
 628
 629 static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
 630 {
 631         unsigned long flags;
 632
 633         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 634                 return;
 635
 636         spin_lock_irqsave(&priv->lock, flags);
 637         priv->qos_data.def_qos_parm.qos_flags = 0;
 638
 639         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 640             !priv->qos_data.qos_cap.q_AP.txop_request)
 641                 priv->qos_data.def_qos_parm.qos_flags |=
 642                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 643
 644         if (priv->qos_data.qos_active)
 645                 priv->qos_data.def_qos_parm.qos_flags |=
 646                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 647
 648         spin_unlock_irqrestore(&priv->lock, flags);
 649
 650         if (force || iwl_is_associated(priv)) {
 651                 IWL_DEBUG_QOS(priv, "send QoS cmd with QoS active %d \n",
 652                               priv->qos_data.qos_active);
 653
 654                 iwl3945_send_qos_params_command(priv,
 655                                 &(priv->qos_data.def_qos_parm));
 656         }
 657 }
 658
 659
 660 #define MAX_UCODE_BEACON_INTERVAL       1024
 661 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 662
 663 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
 664 {
 665         u16 new_val = 0;
 666         u16 beacon_factor = 0;
 667
 668         beacon_factor =
 669             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 670                 / MAX_UCODE_BEACON_INTERVAL;
 671         new_val = beacon_val / beacon_factor;
 672
 673         return cpu_to_le16(new_val);
 674 }
 675
 676 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
 677 {
 678         u64 interval_tm_unit;
 679         u64 tsf, result;
 680         unsigned long flags;
 681         struct ieee80211_conf *conf = NULL;
 682         u16 beacon_int = 0;
 683
 684         conf = ieee80211_get_hw_conf(priv->hw);
 685
 686         spin_lock_irqsave(&priv->lock, flags);
 687         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 688         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 689
 690         tsf = priv->timestamp;
 691
 692         beacon_int = priv->beacon_int;
 693         spin_unlock_irqrestore(&priv->lock, flags);
 694
 695         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 696                 if (beacon_int == 0) {
 697                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 698                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 699                 } else {
 700                         priv->rxon_timing.beacon_interval =
 701                                 cpu_to_le16(beacon_int);
 702                         priv->rxon_timing.beacon_interval =
 703                             iwl3945_adjust_beacon_interval(
 704                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 705                 }
 706
 707                 priv->rxon_timing.atim_window = 0;
 708         } else {
 709                 priv->rxon_timing.beacon_interval =
 710                         iwl3945_adjust_beacon_interval(conf->beacon_int);
 711                 /* TODO: we need to get atim_window from upper stack
 712                  * for now we set to 0 */
 713                 priv->rxon_timing.atim_window = 0;
 714         }
 715
 716         interval_tm_unit =
 717                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 718         result = do_div(tsf, interval_tm_unit);
 719         priv->rxon_timing.beacon_init_val =
 720             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 721
 722         IWL_DEBUG_ASSOC(priv,
 723                 "beacon interval %d beacon timer %d beacon tim %d\n",
 724                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 725                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 726                 le16_to_cpu(priv->rxon_timing.atim_window));
 727 }
 728
 729 static int iwl3945_scan_initiate(struct iwl_priv *priv)
 730 {
 731         if (!iwl_is_ready_rf(priv)) {
 732                 IWL_DEBUG_SCAN(priv, "Aborting scan due to not ready.\n");
 733                 return -EIO;
 734         }
 735
 736         if (test_bit(STATUS_SCANNING, &priv->status)) {
 737                 IWL_DEBUG_SCAN(priv, "Scan already in progress.\n");
 738                 return -EAGAIN;
 739         }
 740
 741         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
 742                 IWL_DEBUG_SCAN(priv, "Scan request while abort pending.  "
 743                                "Queuing.\n");
 744                 return -EAGAIN;
 745         }
 746
 747         IWL_DEBUG_INFO(priv, "Starting scan...\n");
 748         if (priv->cfg->sku & IWL_SKU_G)
 749                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
 750         if (priv->cfg->sku & IWL_SKU_A)
 751                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
 752         set_bit(STATUS_SCANNING, &priv->status);
 753         priv->scan_start = jiffies;
 754         priv->scan_pass_start = priv->scan_start;
 755
 756         queue_work(priv->workqueue, &priv->request_scan);
 757
 758         return 0;
 759 }
 760
 761 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
 762 {
 763         if (mode == NL80211_IFTYPE_ADHOC) {
 764                 const struct iwl_channel_info *ch_info;
 765
 766                 ch_info = iwl_get_channel_info(priv,
 767                         priv->band,
 768                         le16_to_cpu(priv->staging_rxon.channel));
 769
 770                 if (!ch_info || !is_channel_ibss(ch_info)) {
 771                         IWL_ERR(priv, "channel %d not IBSS channel\n",
 772                                   le16_to_cpu(priv->staging_rxon.channel));
 773                         return -EINVAL;
 774                 }
 775         }
 776
 777         iwl_connection_init_rx_config(priv, mode);
 778
 779         iwl3945_clear_stations_table(priv);
 780
 781         /* don't commit rxon if rf-kill is on*/
 782         if (!iwl_is_ready_rf(priv))
 783                 return -EAGAIN;
 784
 785         cancel_delayed_work(&priv->scan_check);
 786         if (iwl_scan_cancel_timeout(priv, 100)) {
 787                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
 788                 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
 789                 return -EAGAIN;
 790         }
 791
 792         iwl3945_commit_rxon(priv);
 793
 794         return 0;
 795 }
 796
 797 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
 798                                       struct ieee80211_tx_info *info,
 799                                       struct iwl_cmd *cmd,
 800                                       struct sk_buff *skb_frag,
 801                                       int last_frag)
 802 {
 803         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 804         struct iwl3945_hw_key *keyinfo =
 805             &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
 806
 807         switch (keyinfo->alg) {
 808         case ALG_CCMP:
 809                 tx->sec_ctl = TX_CMD_SEC_CCM;
 810                 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
 811                 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
 812                 break;
 813
 814         case ALG_TKIP:
 815 #if 0
 816                 tx->sec_ctl = TX_CMD_SEC_TKIP;
 817
 818                 if (last_frag)
 819                         memcpy(tx->tkip_mic.byte, skb_frag->tail - 8,
 820                                8);
 821                 else
 822                         memset(tx->tkip_mic.byte, 0, 8);
 823 #endif
 824                 break;
 825
 826         case ALG_WEP:
 827                 tx->sec_ctl = TX_CMD_SEC_WEP |
 828                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
 829
 830                 if (keyinfo->keylen == 13)
 831                         tx->sec_ctl |= TX_CMD_SEC_KEY128;
 832
 833                 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
 834
 835                 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
 836                              "with key %d\n", info->control.hw_key->hw_key_idx);
 837                 break;
 838
 839         default:
 840                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
 841                 break;
 842         }
 843 }
 844
 845 /*
 846  * handle build REPLY_TX command notification.
 847  */
 848 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
 849                                   struct iwl_cmd *cmd,
 850                                   struct ieee80211_tx_info *info,
 851                                   struct ieee80211_hdr *hdr, u8 std_id)
 852 {
 853         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 854         __le32 tx_flags = tx->tx_flags;
 855         __le16 fc = hdr->frame_control;
 856         u8 rc_flags = info->control.rates[0].flags;
 857
 858         tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 859         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 860                 tx_flags |= TX_CMD_FLG_ACK_MSK;
 861                 if (ieee80211_is_mgmt(fc))
 862                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 863                 if (ieee80211_is_probe_resp(fc) &&
 864                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
 865                         tx_flags |= TX_CMD_FLG_TSF_MSK;
 866         } else {
 867                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
 868                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 869         }
 870
 871         tx->sta_id = std_id;
 872         if (ieee80211_has_morefrags(fc))
 873                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
 874
 875         if (ieee80211_is_data_qos(fc)) {
 876                 u8 *qc = ieee80211_get_qos_ctl(hdr);
 877                 tx->tid_tspec = qc[0] & 0xf;
 878                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
 879         } else {
 880                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
 881         }
 882
 883         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 884                 tx_flags |= TX_CMD_FLG_RTS_MSK;
 885                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
 886         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 887                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
 888                 tx_flags |= TX_CMD_FLG_CTS_MSK;
 889         }
 890
 891         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
 892                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
 893
 894         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
 895         if (ieee80211_is_mgmt(fc)) {
 896                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
 897                         tx->timeout.pm_frame_timeout = cpu_to_le16(3);
 898                 else
 899                         tx->timeout.pm_frame_timeout = cpu_to_le16(2);
 900         } else {
 901                 tx->timeout.pm_frame_timeout = 0;
 902 #ifdef CONFIG_IWL3945_LEDS
 903                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
 904 #endif
 905         }
 906
 907         tx->driver_txop = 0;
 908         tx->tx_flags = tx_flags;
 909         tx->next_frame_len = 0;
 910 }
 911
 912 /**
 913  * iwl3945_get_sta_id - Find station's index within station table
 914  */
 915 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
 916 {
 917         int sta_id;
 918         u16 fc = le16_to_cpu(hdr->frame_control);
 919
 920         /* If this frame is broadcast or management, use broadcast station id */
 921         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
 922             is_multicast_ether_addr(hdr->addr1))
 923                 return priv->hw_params.bcast_sta_id;
 924
 925         switch (priv->iw_mode) {
 926
 927         /* If we are a client station in a BSS network, use the special
 928          * AP station entry (that's the only station we communicate with) */
 929         case NL80211_IFTYPE_STATION:
 930                 return IWL_AP_ID;
 931
 932         /* If we are an AP, then find the station, or use BCAST */
 933         case NL80211_IFTYPE_AP:
 934                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
 935                 if (sta_id != IWL_INVALID_STATION)
 936                         return sta_id;
 937                 return priv->hw_params.bcast_sta_id;
 938
 939         /* If this frame is going out to an IBSS network, find the station,
 940          * or create a new station table entry */
 941         case NL80211_IFTYPE_ADHOC: {
 942                 /* Create new station table entry */
 943                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
 944                 if (sta_id != IWL_INVALID_STATION)
 945                         return sta_id;
 946
 947                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
 948
 949                 if (sta_id != IWL_INVALID_STATION)
 950                         return sta_id;
 951
 952                 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
 953                                "Defaulting to broadcast...\n",
 954                                hdr->addr1);
 955                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
 956                 return priv->hw_params.bcast_sta_id;
 957         }
 958         /* If we are in monitor mode, use BCAST. This is required for
 959          * packet injection. */
 960         case NL80211_IFTYPE_MONITOR:
 961                 return priv->hw_params.bcast_sta_id;
 962
 963         default:
 964                 IWL_WARN(priv, "Unknown mode of operation: %d\n",
 965                         priv->iw_mode);
 966                 return priv->hw_params.bcast_sta_id;
 967         }
 968 }
 969
 970 /*
 971  * start REPLY_TX command process
 972  */
 973 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 974 {
 975         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 976         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 977         struct iwl3945_tx_cmd *tx;
 978         struct iwl_tx_queue *txq = NULL;
 979         struct iwl_queue *q = NULL;
 980         struct iwl_cmd *out_cmd = NULL;
 981         dma_addr_t phys_addr;
 982         dma_addr_t txcmd_phys;
 983         int txq_id = skb_get_queue_mapping(skb);
 984         u16 len, idx, len_org, hdr_len;
 985         u8 id;
 986         u8 unicast;
 987         u8 sta_id;
 988         u8 tid = 0;
 989         u16 seq_number = 0;
 990         __le16 fc;
 991         u8 wait_write_ptr = 0;
 992         u8 *qc = NULL;
 993         unsigned long flags;
 994         int rc;
 995
 996         spin_lock_irqsave(&priv->lock, flags);
 997         if (iwl_is_rfkill(priv)) {
 998                 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
 999                 goto drop_unlock;
1000         }
1001
1002         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
1003                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
1004                 goto drop_unlock;
1005         }
1006
1007         unicast = !is_multicast_ether_addr(hdr->addr1);
1008         id = 0;
1009
1010         fc = hdr->frame_control;
1011
1012 #ifdef CONFIG_IWLWIFI_DEBUG
1013         if (ieee80211_is_auth(fc))
1014                 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
1015         else if (ieee80211_is_assoc_req(fc))
1016                 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
1017         else if (ieee80211_is_reassoc_req(fc))
1018                 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
1019 #endif
1020
1021         /* drop all data frame if we are not associated */
1022         if (ieee80211_is_data(fc) &&
1023             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
1024             (!iwl_is_associated(priv) ||
1025              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
1026                 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
1027                 goto drop_unlock;
1028         }
1029
1030         spin_unlock_irqrestore(&priv->lock, flags);
1031
1032         hdr_len = ieee80211_hdrlen(fc);
1033
1034         /* Find (or create) index into station table for destination station */
1035         sta_id = iwl3945_get_sta_id(priv, hdr);
1036         if (sta_id == IWL_INVALID_STATION) {
1037                 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
1038                                hdr->addr1);
1039                 goto drop;
1040         }
1041
1042         IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
1043
1044         if (ieee80211_is_data_qos(fc)) {
1045                 qc = ieee80211_get_qos_ctl(hdr);
1046                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
1047                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
1048                                 IEEE80211_SCTL_SEQ;
1049                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1050                         (hdr->seq_ctrl &
1051                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
1052                 seq_number += 0x10;
1053         }
1054
1055         /* Descriptor for chosen Tx queue */
1056         txq = &priv->txq[txq_id];
1057         q = &txq->q;
1058
1059         spin_lock_irqsave(&priv->lock, flags);
1060
1061         idx = get_cmd_index(q, q->write_ptr, 0);
1062
1063         /* Set up driver data for this TFD */
1064         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
1065         txq->txb[q->write_ptr].skb[0] = skb;
1066
1067         /* Init first empty entry in queue's array of Tx/cmd buffers */
1068         out_cmd = txq->cmd[idx];
1069         tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
1070         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1071         memset(tx, 0, sizeof(*tx));
1072
1073         /*
1074          * Set up the Tx-command (not MAC!) header.
1075          * Store the chosen Tx queue and TFD index within the sequence field;
1076          * after Tx, uCode's Tx response will return this value so driver can
1077          * locate the frame within the tx queue and do post-tx processing.
1078          */
1079         out_cmd->hdr.cmd = REPLY_TX;
1080         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
1081                                 INDEX_TO_SEQ(q->write_ptr)));
1082
1083         /* Copy MAC header from skb into command buffer */
1084         memcpy(tx->hdr, hdr, hdr_len);
1085
1086         /*
1087          * Use the first empty entry in this queue's command buffer array
1088          * to contain the Tx command and MAC header concatenated together
1089          * (payload data will be in another buffer).
1090          * Size of this varies, due to varying MAC header length.
1091          * If end is not dword aligned, we'll have 2 extra bytes at the end
1092          * of the MAC header (device reads on dword boundaries).
1093          * We'll tell device about this padding later.
1094          */
1095         len = sizeof(struct iwl3945_tx_cmd) +
1096                         sizeof(struct iwl_cmd_header) + hdr_len;
1097
1098         len_org = len;
1099         len = (len + 3) & ~3;
1100
1101         if (len_org != len)
1102                 len_org = 1;
1103         else
1104                 len_org = 0;
1105
1106         /* Physical address of this Tx command's header (not MAC header!),
1107          * within command buffer array. */
1108         txcmd_phys = pci_map_single(priv->pci_dev,
1109                                     out_cmd, sizeof(struct iwl_cmd),
1110                                     PCI_DMA_TODEVICE);
1111         pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
1112         pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
1113         /* Add buffer containing Tx command and MAC(!) header to TFD's
1114          * first entry */
1115         txcmd_phys += offsetof(struct iwl_cmd, hdr);
1116
1117         /* Add buffer containing Tx command and MAC(!) header to TFD's
1118          * first entry */
1119         priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1120                                                    txcmd_phys, len, 1, 0);
1121
1122         if (info->control.hw_key)
1123                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
1124
1125         /* Set up TFD's 2nd entry to point directly to remainder of skb,
1126          * if any (802.11 null frames have no payload). */
1127         len = skb->len - hdr_len;
1128         if (len) {
1129                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1130                                            len, PCI_DMA_TODEVICE);
1131                 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1132                                                            phys_addr, len,
1133                                                            0, U32_PAD(len));
1134         }
1135
1136         /* Total # bytes to be transmitted */
1137         len = (u16)skb->len;
1138         tx->len = cpu_to_le16(len);
1139
1140         /* TODO need this for burst mode later on */
1141         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
1142
1143         /* set is_hcca to 0; it probably will never be implemented */
1144         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
1145
1146         tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
1147         tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
1148
1149         if (!ieee80211_has_morefrags(hdr->frame_control)) {
1150                 txq->need_update = 1;
1151                 if (qc)
1152                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
1153         } else {
1154                 wait_write_ptr = 1;
1155                 txq->need_update = 0;
1156         }
1157
1158         iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
1159
1160         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
1161                            ieee80211_hdrlen(fc));
1162
1163         /* Tell device the write index *just past* this latest filled TFD */
1164         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
1165         rc = iwl_txq_update_write_ptr(priv, txq);
1166         spin_unlock_irqrestore(&priv->lock, flags);
1167
1168         if (rc)
1169                 return rc;
1170
1171         if ((iwl_queue_space(q) < q->high_mark)
1172             && priv->mac80211_registered) {
1173                 if (wait_write_ptr) {
1174                         spin_lock_irqsave(&priv->lock, flags);
1175                         txq->need_update = 1;
1176                         iwl_txq_update_write_ptr(priv, txq);
1177                         spin_unlock_irqrestore(&priv->lock, flags);
1178                 }
1179
1180                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
1181         }
1182
1183         return 0;
1184
1185 drop_unlock:
1186         spin_unlock_irqrestore(&priv->lock, flags);
1187 drop:
1188         return -1;
1189 }
1190
1191 static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1192 {
1193         unsigned long flags;
1194
1195         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1196                 return;
1197
1198         IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO %s\n",
1199                           disable_radio ? "OFF" : "ON");
1200
1201         if (disable_radio) {
1202                 iwl_scan_cancel(priv);
1203                 /* FIXME: This is a workaround for AP */
1204                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
1205                         spin_lock_irqsave(&priv->lock, flags);
1206                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1207                                     CSR_UCODE_SW_BIT_RFKILL);
1208                         spin_unlock_irqrestore(&priv->lock, flags);
1209                         iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
1210                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1211                 }
1212                 return;
1213         }
1214
1215         spin_lock_irqsave(&priv->lock, flags);
1216         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1217
1218         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1219         spin_unlock_irqrestore(&priv->lock, flags);
1220
1221         /* wake up ucode */
1222         msleep(10);
1223
1224         spin_lock_irqsave(&priv->lock, flags);
1225         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1226         if (!iwl_grab_nic_access(priv))
1227                 iwl_release_nic_access(priv);
1228         spin_unlock_irqrestore(&priv->lock, flags);
1229
1230         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1231                 IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
1232                                   "disabled by HW switch\n");
1233                 return;
1234         }
1235
1236         if (priv->is_open)
1237                 queue_work(priv->workqueue, &priv->restart);
1238         return;
1239 }
1240
1241 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
1242
1243 #include "iwl-spectrum.h"
1244
1245 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1246 #define BEACON_TIME_MASK_HIGH   0xFF000000
1247 #define TIME_UNIT               1024
1248
1249 /*
1250  * extended beacon time format
1251  * time in usec will be changed into a 32-bit value in 8:24 format
1252  * the high 1 byte is the beacon counts
1253  * the lower 3 bytes is the time in usec within one beacon interval
1254  */
1255
1256 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
1257 {
1258         u32 quot;
1259         u32 rem;
1260         u32 interval = beacon_interval * 1024;
1261
1262         if (!interval || !usec)
1263                 return 0;
1264
1265         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1266         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1267
1268         return (quot << 24) + rem;
1269 }
1270
1271 /* base is usually what we get from ucode with each received frame,
1272  * the same as HW timer counter counting down
1273  */
1274
1275 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1276 {
1277         u32 base_low = base & BEACON_TIME_MASK_LOW;
1278         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1279         u32 interval = beacon_interval * TIME_UNIT;
1280         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1281             (addon & BEACON_TIME_MASK_HIGH);
1282
1283         if (base_low > addon_low)
1284                 res += base_low - addon_low;
1285         else if (base_low < addon_low) {
1286                 res += interval + base_low - addon_low;
1287                 res += (1 << 24);
1288         } else
1289                 res += (1 << 24);
1290
1291         return cpu_to_le32(res);
1292 }
1293
1294 static int iwl3945_get_measurement(struct iwl_priv *priv,
1295                                struct ieee80211_measurement_params *params,
1296                                u8 type)
1297 {
1298         struct iwl_spectrum_cmd spectrum;
1299         struct iwl_rx_packet *res;
1300         struct iwl_host_cmd cmd = {
1301                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1302                 .data = (void *)&spectrum,
1303                 .meta.flags = CMD_WANT_SKB,
1304         };
1305         u32 add_time = le64_to_cpu(params->start_time);
1306         int rc;
1307         int spectrum_resp_status;
1308         int duration = le16_to_cpu(params->duration);
1309
1310         if (iwl_is_associated(priv))
1311                 add_time =
1312                     iwl3945_usecs_to_beacons(
1313                         le64_to_cpu(params->start_time) - priv->last_tsf,
1314                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1315
1316         memset(&spectrum, 0, sizeof(spectrum));
1317
1318         spectrum.channel_count = cpu_to_le16(1);
1319         spectrum.flags =
1320             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1321         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1322         cmd.len = sizeof(spectrum);
1323         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1324
1325         if (iwl_is_associated(priv))
1326                 spectrum.start_time =
1327                     iwl3945_add_beacon_time(priv->last_beacon_time,
1328                                 add_time,
1329                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1330         else
1331                 spectrum.start_time = 0;
1332
1333         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1334         spectrum.channels[0].channel = params->channel;
1335         spectrum.channels[0].type = type;
1336         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1337                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1338                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1339
1340         rc = iwl_send_cmd_sync(priv, &cmd);
1341         if (rc)
1342                 return rc;
1343
1344         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1345         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1346                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1347                 rc = -EIO;
1348         }
1349
1350         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1351         switch (spectrum_resp_status) {
1352         case 0:         /* Command will be handled */
1353                 if (res->u.spectrum.id != 0xff) {
1354                         IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1355                                                 res->u.spectrum.id);
1356                         priv->measurement_status &= ~MEASUREMENT_READY;
1357                 }
1358                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1359                 rc = 0;
1360                 break;
1361
1362         case 1:         /* Command will not be handled */
1363                 rc = -EAGAIN;
1364                 break;
1365         }
1366
1367         dev_kfree_skb_any(cmd.meta.u.skb);
1368
1369         return rc;
1370 }
1371 #endif
1372
1373 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1374                                struct iwl_rx_mem_buffer *rxb)
1375 {
1376         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1377         struct iwl_alive_resp *palive;
1378         struct delayed_work *pwork;
1379
1380         palive = &pkt->u.alive_frame;
1381
1382         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1383                        "0x%01X 0x%01X\n",
1384                        palive->is_valid, palive->ver_type,
1385                        palive->ver_subtype);
1386
1387         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1388                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1389                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1390                        sizeof(struct iwl_alive_resp));
1391                 pwork = &priv->init_alive_start;
1392         } else {
1393                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1394                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1395                        sizeof(struct iwl_alive_resp));
1396                 pwork = &priv->alive_start;
1397                 iwl3945_disable_events(priv);
1398         }
1399
1400         /* We delay the ALIVE response by 5ms to
1401          * give the HW RF Kill time to activate... */
1402         if (palive->is_valid == UCODE_VALID_OK)
1403                 queue_delayed_work(priv->workqueue, pwork,
1404                                    msecs_to_jiffies(5));
1405         else
1406                 IWL_WARN(priv, "uCode did not respond OK.\n");
1407 }
1408
1409 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1410                                  struct iwl_rx_mem_buffer *rxb)
1411 {
1412 #ifdef CONFIG_IWLWIFI_DEBUG
1413         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1414 #endif
1415
1416         IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1417         return;
1418 }
1419
1420 static void iwl3945_rx_reply_error(struct iwl_priv *priv,
1421                                struct iwl_rx_mem_buffer *rxb)
1422 {
1423         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1424
1425         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
1426                 "seq 0x%04X ser 0x%08X\n",
1427                 le32_to_cpu(pkt->u.err_resp.error_type),
1428                 get_cmd_string(pkt->u.err_resp.cmd_id),
1429                 pkt->u.err_resp.cmd_id,
1430                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1431                 le32_to_cpu(pkt->u.err_resp.error_info));
1432 }
1433
1434 static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
1435                                           struct iwl_rx_mem_buffer *rxb)
1436 {
1437 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
1438         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1439         struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
1440
1441         if (!report->state) {
1442                 IWL_DEBUG(priv, IWL_DL_11H | IWL_DL_INFO,
1443                           "Spectrum Measure Notification: Start\n");
1444                 return;
1445         }
1446
1447         memcpy(&priv->measure_report, report, sizeof(*report));
1448         priv->measurement_status |= MEASUREMENT_READY;
1449 #endif
1450 }
1451
1452 static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
1453                                   struct iwl_rx_mem_buffer *rxb)
1454 {
1455 #ifdef CONFIG_IWLWIFI_DEBUG
1456         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1457         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1458         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
1459                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1460 #endif
1461 }
1462
1463 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1464                                              struct iwl_rx_mem_buffer *rxb)
1465 {
1466         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1467         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
1468                         "notification for %s:\n",
1469                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1470         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
1471                            le32_to_cpu(pkt->len));
1472 }
1473
1474 static void iwl3945_bg_beacon_update(struct work_struct *work)
1475 {
1476         struct iwl_priv *priv =
1477                 container_of(work, struct iwl_priv, beacon_update);
1478         struct sk_buff *beacon;
1479
1480         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1481         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1482
1483         if (!beacon) {
1484                 IWL_ERR(priv, "update beacon failed\n");
1485                 return;
1486         }
1487
1488         mutex_lock(&priv->mutex);
1489         /* new beacon skb is allocated every time; dispose previous.*/
1490         if (priv->ibss_beacon)
1491                 dev_kfree_skb(priv->ibss_beacon);
1492
1493         priv->ibss_beacon = beacon;
1494         mutex_unlock(&priv->mutex);
1495
1496         iwl3945_send_beacon_cmd(priv);
1497 }
1498
1499 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1500                                 struct iwl_rx_mem_buffer *rxb)
1501 {
1502 #ifdef CONFIG_IWLWIFI_DEBUG
1503         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1504         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1505         u8 rate = beacon->beacon_notify_hdr.rate;
1506
1507         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1508                 "tsf %d %d rate %d\n",
1509                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1510                 beacon->beacon_notify_hdr.failure_frame,
1511                 le32_to_cpu(beacon->ibss_mgr_status),
1512                 le32_to_cpu(beacon->high_tsf),
1513                 le32_to_cpu(beacon->low_tsf), rate);
1514 #endif
1515
1516         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1517             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1518                 queue_work(priv->workqueue, &priv->beacon_update);
1519 }
1520
1521 /* Service response to REPLY_SCAN_CMD (0x80) */
1522 static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
1523                               struct iwl_rx_mem_buffer *rxb)
1524 {
1525 #ifdef CONFIG_IWLWIFI_DEBUG
1526         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1527         struct iwl_scanreq_notification *notif =
1528             (struct iwl_scanreq_notification *)pkt->u.raw;
1529
1530         IWL_DEBUG_RX(priv, "Scan request status = 0x%x\n", notif->status);
1531 #endif
1532 }
1533
1534 /* Service SCAN_START_NOTIFICATION (0x82) */
1535 static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
1536                                     struct iwl_rx_mem_buffer *rxb)
1537 {
1538         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1539         struct iwl_scanstart_notification *notif =
1540             (struct iwl_scanstart_notification *)pkt->u.raw;
1541         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1542         IWL_DEBUG_SCAN(priv, "Scan start: "
1543                        "%d [802.11%s] "
1544                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1545                        notif->channel,
1546                        notif->band ? "bg" : "a",
1547                        notif->tsf_high,
1548                        notif->tsf_low, notif->status, notif->beacon_timer);
1549 }
1550
1551 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1552 static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
1553                                       struct iwl_rx_mem_buffer *rxb)
1554 {
1555 #ifdef CONFIG_IWLWIFI_DEBUG
1556         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1557         struct iwl_scanresults_notification *notif =
1558             (struct iwl_scanresults_notification *)pkt->u.raw;
1559 #endif
1560
1561         IWL_DEBUG_SCAN(priv, "Scan ch.res: "
1562                        "%d [802.11%s] "
1563                        "(TSF: 0x%08X:%08X) - %d "
1564                        "elapsed=%lu usec (%dms since last)\n",
1565                        notif->channel,
1566                        notif->band ? "bg" : "a",
1567                        le32_to_cpu(notif->tsf_high),
1568                        le32_to_cpu(notif->tsf_low),
1569                        le32_to_cpu(notif->statistics[0]),
1570                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1571                        jiffies_to_msecs(elapsed_jiffies
1572                                         (priv->last_scan_jiffies, jiffies)));
1573
1574         priv->last_scan_jiffies = jiffies;
1575         priv->next_scan_jiffies = 0;
1576 }
1577
1578 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1579 static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
1580                                        struct iwl_rx_mem_buffer *rxb)
1581 {
1582 #ifdef CONFIG_IWLWIFI_DEBUG
1583         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1584         struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1585 #endif
1586
1587         IWL_DEBUG_SCAN(priv, "Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1588                        scan_notif->scanned_channels,
1589                        scan_notif->tsf_low,
1590                        scan_notif->tsf_high, scan_notif->status);
1591
1592         /* The HW is no longer scanning */
1593         clear_bit(STATUS_SCAN_HW, &priv->status);
1594
1595         /* The scan completion notification came in, so kill that timer... */
1596         cancel_delayed_work(&priv->scan_check);
1597
1598         IWL_DEBUG_INFO(priv, "Scan pass on %sGHz took %dms\n",
1599                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
1600                                                         "2.4" : "5.2",
1601                        jiffies_to_msecs(elapsed_jiffies
1602                                         (priv->scan_pass_start, jiffies)));
1603
1604         /* Remove this scanned band from the list of pending
1605          * bands to scan, band G precedes A in order of scanning
1606          * as seen in iwl3945_bg_request_scan */
1607         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
1608                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
1609         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
1610                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
1611
1612         /* If a request to abort was given, or the scan did not succeed
1613          * then we reset the scan state machine and terminate,
1614          * re-queuing another scan if one has been requested */
1615         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1616                 IWL_DEBUG_INFO(priv, "Aborted scan completed.\n");
1617                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1618         } else {
1619                 /* If there are more bands on this scan pass reschedule */
1620                 if (priv->scan_bands > 0)
1621                         goto reschedule;
1622         }
1623
1624         priv->last_scan_jiffies = jiffies;
1625         priv->next_scan_jiffies = 0;
1626         IWL_DEBUG_INFO(priv, "Setting scan to off\n");
1627
1628         clear_bit(STATUS_SCANNING, &priv->status);
1629
1630         IWL_DEBUG_INFO(priv, "Scan took %dms\n",
1631                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1632
1633         queue_work(priv->workqueue, &priv->scan_completed);
1634
1635         return;
1636
1637 reschedule:
1638         priv->scan_pass_start = jiffies;
1639         queue_work(priv->workqueue, &priv->request_scan);
1640 }
1641
1642 /* Handle notification from uCode that card's power state is changing
1643  * due to software, hardware, or critical temperature RFKILL */
1644 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1645                                     struct iwl_rx_mem_buffer *rxb)
1646 {
1647         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1648         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1649         unsigned long status = priv->status;
1650
1651         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1652                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1653                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1654
1655         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1656                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1657
1658         if (flags & HW_CARD_DISABLED)
1659                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1660         else
1661                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1662
1663
1664         if (flags & SW_CARD_DISABLED)
1665                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1666         else
1667                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1668
1669         iwl_scan_cancel(priv);
1670
1671         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1672              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1673             (test_bit(STATUS_RF_KILL_SW, &status) !=
1674              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1675                 queue_work(priv->workqueue, &priv->rf_kill);
1676         else
1677                 wake_up_interruptible(&priv->wait_command_queue);
1678 }
1679
1680 /**
1681  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1682  *
1683  * Setup the RX handlers for each of the reply types sent from the uCode
1684  * to the host.
1685  *
1686  * This function chains into the hardware specific files for them to setup
1687  * any hardware specific handlers as well.
1688  */
1689 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1690 {
1691         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1692         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1693         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
1694         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1695         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1696             iwl3945_rx_spectrum_measure_notif;
1697         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
1698         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1699             iwl3945_rx_pm_debug_statistics_notif;
1700         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1701
1702         /*
1703          * The same handler is used for both the REPLY to a discrete
1704          * statistics request from the host as well as for the periodic
1705          * statistics notifications (after received beacons) from the uCode.
1706          */
1707         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1708         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1709
1710         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
1711         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
1712         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1713             iwl3945_rx_scan_results_notif;
1714         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1715             iwl3945_rx_scan_complete_notif;
1716         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1717
1718         /* Set up hardware specific Rx handlers */
1719         iwl3945_hw_rx_handler_setup(priv);
1720 }
1721
1722 /**
1723  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
1724  * When FW advances 'R' index, all entries between old and new 'R' index
1725  * need to be reclaimed.
1726  */
1727 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
1728                                       int txq_id, int index)
1729 {
1730         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1731         struct iwl_queue *q = &txq->q;
1732         int nfreed = 0;
1733
1734         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1735                 IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
1736                           "is out of range [0-%d] %d %d.\n", txq_id,
1737                           index, q->n_bd, q->write_ptr, q->read_ptr);
1738                 return;
1739         }
1740
1741         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
1742                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1743                 if (nfreed > 1) {
1744                         IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
1745                                         q->write_ptr, q->read_ptr);
1746                         queue_work(priv->workqueue, &priv->restart);
1747                         break;
1748                 }
1749                 nfreed++;
1750         }
1751 }
1752
1753
1754 /**
1755  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
1756  * @rxb: Rx buffer to reclaim
1757  *
1758  * If an Rx buffer has an async callback associated with it the callback
1759  * will be executed.  The attached skb (if present) will only be freed
1760  * if the callback returns 1
1761  */
1762 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
1763                                 struct iwl_rx_mem_buffer *rxb)
1764 {
1765         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1766         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1767         int txq_id = SEQ_TO_QUEUE(sequence);
1768         int index = SEQ_TO_INDEX(sequence);
1769         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
1770         int cmd_index;
1771         struct iwl_cmd *cmd;
1772
1773         if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
1774                  "wrong command queue %d, sequence 0x%X readp=%d writep=%d\n",
1775                   txq_id, sequence,
1776                   priv->txq[IWL_CMD_QUEUE_NUM].q.read_ptr,
1777                   priv->txq[IWL_CMD_QUEUE_NUM].q.write_ptr)) {
1778                 iwl_print_hex_dump(priv, IWL_DL_INFO , rxb, 32);
1779                 return;
1780         }
1781
1782         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
1783         cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
1784
1785         /* Input error checking is done when commands are added to queue. */
1786         if (cmd->meta.flags & CMD_WANT_SKB) {
1787                 cmd->meta.source->u.skb = rxb->skb;
1788                 rxb->skb = NULL;
1789         } else if (cmd->meta.u.callback &&
1790                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
1791                 rxb->skb = NULL;
1792
1793         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
1794
1795         if (!(cmd->meta.flags & CMD_ASYNC)) {
1796                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1797                 wake_up_interruptible(&priv->wait_command_queue);
1798         }
1799 }
1800
1801 /************************** RX-FUNCTIONS ****************************/
1802 /*
1803  * Rx theory of operation
1804  *
1805  * The host allocates 32 DMA target addresses and passes the host address
1806  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1807  * 0 to 31
1808  *
1809  * Rx Queue Indexes
1810  * The host/firmware share two index registers for managing the Rx buffers.
1811  *
1812  * The READ index maps to the first position that the firmware may be writing
1813  * to -- the driver can read up to (but not including) this position and get
1814  * good data.
1815  * The READ index is managed by the firmware once the card is enabled.
1816  *
1817  * The WRITE index maps to the last position the driver has read from -- the
1818  * position preceding WRITE is the last slot the firmware can place a packet.
1819  *
1820  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1821  * WRITE = READ.
1822  *
1823  * During initialization, the host sets up the READ queue position to the first
1824  * INDEX position, and WRITE to the last (READ - 1 wrapped)
1825  *
1826  * When the firmware places a packet in a buffer, it will advance the READ index
1827  * and fire the RX interrupt.  The driver can then query the READ index and
1828  * process as many packets as possible, moving the WRITE index forward as it
1829  * resets the Rx queue buffers with new memory.
1830  *
1831  * The management in the driver is as follows:
1832  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
1833  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1834  *   to replenish the iwl->rxq->rx_free.
1835  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1836  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
1837  *   'processed' and 'read' driver indexes as well)
1838  * + A received packet is processed and handed to the kernel network stack,
1839  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
1840  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1841  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1842  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
1843  *   were enough free buffers and RX_STALLED is set it is cleared.
1844  *
1845  *
1846  * Driver sequence:
1847  *
1848  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
1849  *                            iwl3945_rx_queue_restock
1850  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1851  *                            queue, updates firmware pointers, and updates
1852  *                            the WRITE index.  If insufficient rx_free buffers
1853  *                            are available, schedules iwl3945_rx_replenish
1854  *
1855  * -- enable interrupts --
1856  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
1857  *                            READ INDEX, detaching the SKB from the pool.
1858  *                            Moves the packet buffer from queue to rx_used.
1859  *                            Calls iwl3945_rx_queue_restock to refill any empty
1860  *                            slots.
1861  * ...
1862  *
1863  */
1864
1865 /**
1866  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1867  */
1868 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1869                                           dma_addr_t dma_addr)
1870 {
1871         return cpu_to_le32((u32)dma_addr);
1872 }
1873
1874 /**
1875  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1876  *
1877  * If there are slots in the RX queue that need to be restocked,
1878  * and we have free pre-allocated buffers, fill the ranks as much
1879  * as we can, pulling from rx_free.
1880  *
1881  * This moves the 'write' index forward to catch up with 'processed', and
1882  * also updates the memory address in the firmware to reference the new
1883  * target buffer.
1884  */
1885 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1886 {
1887         struct iwl_rx_queue *rxq = &priv->rxq;
1888         struct list_head *element;
1889         struct iwl_rx_mem_buffer *rxb;
1890         unsigned long flags;
1891         int write, rc;
1892
1893         spin_lock_irqsave(&rxq->lock, flags);
1894         write = rxq->write & ~0x7;
1895         while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1896                 /* Get next free Rx buffer, remove from free list */
1897                 element = rxq->rx_free.next;
1898                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1899                 list_del(element);
1900
1901                 /* Point to Rx buffer via next RBD in circular buffer */
1902                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1903                 rxq->queue[rxq->write] = rxb;
1904                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1905                 rxq->free_count--;
1906         }
1907         spin_unlock_irqrestore(&rxq->lock, flags);
1908         /* If the pre-allocated buffer pool is dropping low, schedule to
1909          * refill it */
1910         if (rxq->free_count <= RX_LOW_WATERMARK)
1911                 queue_work(priv->workqueue, &priv->rx_replenish);
1912
1913
1914         /* If we've added more space for the firmware to place data, tell it.
1915          * Increment device's write pointer in multiples of 8. */
1916         if ((write != (rxq->write & ~0x7))
1917             || (abs(rxq->write - rxq->read) > 7)) {
1918                 spin_lock_irqsave(&rxq->lock, flags);
1919                 rxq->need_update = 1;
1920                 spin_unlock_irqrestore(&rxq->lock, flags);
1921                 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1922                 if (rc)
1923                         return rc;
1924         }
1925
1926         return 0;
1927 }
1928
1929 /**
1930  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1931  *
1932  * When moving to rx_free an SKB is allocated for the slot.
1933  *
1934  * Also restock the Rx queue via iwl3945_rx_queue_restock.
1935  * This is called as a scheduled work item (except for during initialization)
1936  */
1937 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1938 {
1939         struct iwl_rx_queue *rxq = &priv->rxq;
1940         struct list_head *element;
1941         struct iwl_rx_mem_buffer *rxb;
1942         unsigned long flags;
1943         spin_lock_irqsave(&rxq->lock, flags);
1944         while (!list_empty(&rxq->rx_used)) {
1945                 element = rxq->rx_used.next;
1946                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1947
1948                 /* Alloc a new receive buffer */
1949                 rxb->skb =
1950                     alloc_skb(priv->hw_params.rx_buf_size,
1951                                 __GFP_NOWARN | GFP_ATOMIC);
1952                 if (!rxb->skb) {
1953                         if (net_ratelimit())
1954                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1955                         /* We don't reschedule replenish work here -- we will
1956                          * call the restock method and if it still needs
1957                          * more buffers it will schedule replenish */
1958                         break;
1959                 }
1960
1961                 /* If radiotap head is required, reserve some headroom here.
1962                  * The physical head count is a variable rx_stats->phy_count.
1963                  * We reserve 4 bytes here. Plus these extra bytes, the
1964                  * headroom of the physical head should be enough for the
1965                  * radiotap head that iwl3945 supported. See iwl3945_rt.
1966                  */
1967                 skb_reserve(rxb->skb, 4);
1968
1969                 priv->alloc_rxb_skb++;
1970                 list_del(element);
1971
1972                 /* Get physical address of RB/SKB */
1973                 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1974                                                 rxb->skb->data,
1975                                                 priv->hw_params.rx_buf_size,
1976                                                 PCI_DMA_FROMDEVICE);
1977                 list_add_tail(&rxb->list, &rxq->rx_free);
1978                 rxq->free_count++;
1979         }
1980         spin_unlock_irqrestore(&rxq->lock, flags);
1981 }
1982
1983 /*
1984  * this should be called while priv->lock is locked
1985  */
1986 static void __iwl3945_rx_replenish(void *data)
1987 {
1988         struct iwl_priv *priv = data;
1989
1990         iwl3945_rx_allocate(priv);
1991         iwl3945_rx_queue_restock(priv);
1992 }
1993
1994
1995 void iwl3945_rx_replenish(void *data)
1996 {
1997         struct iwl_priv *priv = data;
1998         unsigned long flags;
1999
2000         iwl3945_rx_allocate(priv);
2001
2002         spin_lock_irqsave(&priv->lock, flags);
2003         iwl3945_rx_queue_restock(priv);
2004         spin_unlock_irqrestore(&priv->lock, flags);
2005 }
2006
2007 /* Convert linear signal-to-noise ratio into dB */
2008 static u8 ratio2dB[100] = {
2009 /*       0   1   2   3   4   5   6   7   8   9 */
2010          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2011         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2012         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2013         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2014         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2015         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2016         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2017         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2018         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2019         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2020 };
2021
2022 /* Calculates a relative dB value from a ratio of linear
2023  *   (i.e. not dB) signal levels.
2024  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2025 int iwl3945_calc_db_from_ratio(int sig_ratio)
2026 {
2027         /* 1000:1 or higher just report as 60 dB */
2028         if (sig_ratio >= 1000)
2029                 return 60;
2030
2031         /* 100:1 or higher, divide by 10 and use table,
2032          *   add 20 dB to make up for divide by 10 */
2033         if (sig_ratio >= 100)
2034                 return 20 + (int)ratio2dB[sig_ratio/10];
2035
2036         /* We shouldn't see this */
2037         if (sig_ratio < 1)
2038                 return 0;
2039
2040         /* Use table for ratios 1:1 - 99:1 */
2041         return (int)ratio2dB[sig_ratio];
2042 }
2043
2044 #define PERFECT_RSSI (-20) /* dBm */
2045 #define WORST_RSSI (-95)   /* dBm */
2046 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2047
2048 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2049  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2050  *   about formulas used below. */
2051 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
2052 {
2053         int sig_qual;
2054         int degradation = PERFECT_RSSI - rssi_dbm;
2055
2056         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2057          * as indicator; formula is (signal dbm - noise dbm).
2058          * SNR at or above 40 is a great signal (100%).
2059          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2060          * Weakest usable signal is usually 10 - 15 dB SNR. */
2061         if (noise_dbm) {
2062                 if (rssi_dbm - noise_dbm >= 40)
2063                         return 100;
2064                 else if (rssi_dbm < noise_dbm)
2065                         return 0;
2066                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2067
2068         /* Else use just the signal level.
2069          * This formula is a least squares fit of data points collected and
2070          *   compared with a reference system that had a percentage (%) display
2071          *   for signal quality. */
2072         } else
2073                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2074                             (15 * RSSI_RANGE + 62 * degradation)) /
2075                            (RSSI_RANGE * RSSI_RANGE);
2076
2077         if (sig_qual > 100)
2078                 sig_qual = 100;
2079         else if (sig_qual < 1)
2080                 sig_qual = 0;
2081
2082         return sig_qual;
2083 }
2084
2085 /**
2086  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
2087  *
2088  * Uses the priv->rx_handlers callback function array to invoke
2089  * the appropriate handlers, including command responses,
2090  * frame-received notifications, and other notifications.
2091  */
2092 static void iwl3945_rx_handle(struct iwl_priv *priv)
2093 {
2094         struct iwl_rx_mem_buffer *rxb;
2095         struct iwl_rx_packet *pkt;
2096         struct iwl_rx_queue *rxq = &priv->rxq;
2097         u32 r, i;
2098         int reclaim;
2099         unsigned long flags;
2100         u8 fill_rx = 0;
2101         u32 count = 8;
2102
2103         /* uCode's read index (stored in shared DRAM) indicates the last Rx
2104          * buffer that the driver may process (last buffer filled by ucode). */
2105         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
2106         i = rxq->read;
2107
2108         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2109                 fill_rx = 1;
2110         /* Rx interrupt, but nothing sent from uCode */
2111         if (i == r)
2112                 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
2113
2114         while (i != r) {
2115                 rxb = rxq->queue[i];
2116
2117                 /* If an RXB doesn't have a Rx queue slot associated with it,
2118                  * then a bug has been introduced in the queue refilling
2119                  * routines -- catch it here */
2120                 BUG_ON(rxb == NULL);
2121
2122                 rxq->queue[i] = NULL;
2123
2124                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
2125                                             priv->hw_params.rx_buf_size,
2126                                             PCI_DMA_FROMDEVICE);
2127                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2128
2129                 /* Reclaim a command buffer only if this packet is a response
2130                  *   to a (driver-originated) command.
2131                  * If the packet (e.g. Rx frame) originated from uCode,
2132                  *   there is no command buffer to reclaim.
2133                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2134                  *   but apparently a few don't get set; catch them here. */
2135                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2136                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2137                         (pkt->hdr.cmd != REPLY_TX);
2138
2139                 /* Based on type of command response or notification,
2140                  *   handle those that need handling via function in
2141                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
2142                 if (priv->rx_handlers[pkt->hdr.cmd]) {
2143                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
2144                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
2145                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2146                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2147                 } else {
2148                         /* No handling needed */
2149                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
2150                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2151                                 r, i, get_cmd_string(pkt->hdr.cmd),
2152                                 pkt->hdr.cmd);
2153                 }
2154
2155                 if (reclaim) {
2156                         /* Invoke any callbacks, transfer the skb to caller, and
2157                          * fire off the (possibly) blocking iwl_send_cmd()
2158                          * as we reclaim the driver command queue */
2159                         if (rxb && rxb->skb)
2160                                 iwl3945_tx_cmd_complete(priv, rxb);
2161                         else
2162                                 IWL_WARN(priv, "Claim null rxb?\n");
2163                 }
2164
2165                 /* For now we just don't re-use anything.  We can tweak this
2166                  * later to try and re-use notification packets and SKBs that
2167                  * fail to Rx correctly */
2168                 if (rxb->skb != NULL) {
2169                         priv->alloc_rxb_skb--;
2170                         dev_kfree_skb_any(rxb->skb);
2171                         rxb->skb = NULL;
2172                 }
2173
2174                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
2175                                 priv->hw_params.rx_buf_size,
2176                                 PCI_DMA_FROMDEVICE);
2177                 spin_lock_irqsave(&rxq->lock, flags);
2178                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2179                 spin_unlock_irqrestore(&rxq->lock, flags);
2180                 i = (i + 1) & RX_QUEUE_MASK;
2181                 /* If there are a lot of unused frames,
2182                  * restock the Rx queue so ucode won't assert. */
2183                 if (fill_rx) {
2184                         count++;
2185                         if (count >= 8) {
2186                                 priv->rxq.read = i;
2187                                 __iwl3945_rx_replenish(priv);
2188                                 count = 0;
2189                         }
2190                 }
2191         }
2192
2193         /* Backtrack one entry */
2194         priv->rxq.read = i;
2195         iwl3945_rx_queue_restock(priv);
2196 }
2197
2198 static void iwl3945_enable_interrupts(struct iwl_priv *priv)
2199 {
2200         IWL_DEBUG_ISR(priv, "Enabling interrupts\n");
2201         set_bit(STATUS_INT_ENABLED, &priv->status);
2202         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2203 }
2204
2205
2206 /* call this function to flush any scheduled tasklet */
2207 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2208 {
2209         /* wait to make sure we flush pending tasklet*/
2210         synchronize_irq(priv->pci_dev->irq);
2211         tasklet_kill(&priv->irq_tasklet);
2212 }
2213
2214
2215 static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
2216 {
2217         clear_bit(STATUS_INT_ENABLED, &priv->status);
2218
2219         /* disable interrupts from uCode/NIC to host */
2220         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2221
2222         /* acknowledge/clear/reset any interrupts still pending
2223          * from uCode or flow handler (Rx/Tx DMA) */
2224         iwl_write32(priv, CSR_INT, 0xffffffff);
2225         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2226         IWL_DEBUG_ISR(priv, "Disabled interrupts\n");
2227 }
2228
2229 static const char *desc_lookup(int i)
2230 {
2231         switch (i) {
2232         case 1:
2233                 return "FAIL";
2234         case 2:
2235                 return "BAD_PARAM";
2236         case 3:
2237                 return "BAD_CHECKSUM";
2238         case 4:
2239                 return "NMI_INTERRUPT";
2240         case 5:
2241                 return "SYSASSERT";
2242         case 6:
2243                 return "FATAL_ERROR";
2244         }
2245
2246         return "UNKNOWN";
2247 }
2248
2249 #define ERROR_START_OFFSET  (1 * sizeof(u32))
2250 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
2251
2252 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
2253 {
2254         u32 i;
2255         u32 desc, time, count, base, data1;
2256         u32 blink1, blink2, ilink1, ilink2;
2257         int rc;
2258
2259         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2260
2261         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2262                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
2263                 return;
2264         }
2265
2266         rc = iwl_grab_nic_access(priv);
2267         if (rc) {
2268                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2269                 return;
2270         }
2271
2272         count = iwl_read_targ_mem(priv, base);
2273
2274         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2275                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2276                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2277                         priv->status, count);
2278         }
2279
2280         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
2281                   "ilink1  nmiPC   Line\n");
2282         for (i = ERROR_START_OFFSET;
2283              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
2284              i += ERROR_ELEM_SIZE) {
2285                 desc = iwl_read_targ_mem(priv, base + i);
2286                 time =
2287                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
2288                 blink1 =
2289                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
2290                 blink2 =
2291                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
2292                 ilink1 =
2293                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
2294                 ilink2 =
2295                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
2296                 data1 =
2297                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
2298
2299                 IWL_ERR(priv,
2300                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
2301                         desc_lookup(desc), desc, time, blink1, blink2,
2302                         ilink1, ilink2, data1);
2303         }
2304
2305         iwl_release_nic_access(priv);
2306
2307 }
2308
2309 #define EVENT_START_OFFSET  (6 * sizeof(u32))
2310
2311 /**
2312  * iwl3945_print_event_log - Dump error event log to syslog
2313  *
2314  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
2315  */
2316 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
2317                                 u32 num_events, u32 mode)
2318 {
2319         u32 i;
2320         u32 base;       /* SRAM byte address of event log header */
2321         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2322         u32 ptr;        /* SRAM byte address of log data */
2323         u32 ev, time, data; /* event log data */
2324
2325         if (num_events == 0)
2326                 return;
2327
2328         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2329
2330         if (mode == 0)
2331                 event_size = 2 * sizeof(u32);
2332         else
2333                 event_size = 3 * sizeof(u32);
2334
2335         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2336
2337         /* "time" is actually "data" for mode 0 (no timestamp).
2338          * place event id # at far right for easier visual parsing. */
2339         for (i = 0; i < num_events; i++) {
2340                 ev = iwl_read_targ_mem(priv, ptr);
2341                 ptr += sizeof(u32);
2342                 time = iwl_read_targ_mem(priv, ptr);
2343                 ptr += sizeof(u32);
2344                 if (mode == 0) {
2345                         /* data, ev */
2346                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
2347                 } else {
2348                         data = iwl_read_targ_mem(priv, ptr);
2349                         ptr += sizeof(u32);
2350                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
2351                 }
2352         }
2353 }
2354
2355 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
2356 {
2357         int rc;
2358         u32 base;       /* SRAM byte address of event log header */
2359         u32 capacity;   /* event log capacity in # entries */
2360         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2361         u32 num_wraps;  /* # times uCode wrapped to top of log */
2362         u32 next_entry; /* index of next entry to be written by uCode */
2363         u32 size;       /* # entries that we'll print */
2364
2365         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2366         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2367                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
2368                 return;
2369         }
2370
2371         rc = iwl_grab_nic_access(priv);
2372         if (rc) {
2373                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2374                 return;
2375         }
2376
2377         /* event log header */
2378         capacity = iwl_read_targ_mem(priv, base);
2379         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2380         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2381         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2382
2383         size = num_wraps ? capacity : next_entry;
2384
2385         /* bail out if nothing in log */
2386         if (size == 0) {
2387                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2388                 iwl_release_nic_access(priv);
2389                 return;
2390         }
2391
2392         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
2393                   size, num_wraps);
2394
2395         /* if uCode has wrapped back to top of log, start at the oldest entry,
2396          * i.e the next one that uCode would fill. */
2397         if (num_wraps)
2398                 iwl3945_print_event_log(priv, next_entry,
2399                                     capacity - next_entry, mode);
2400
2401         /* (then/else) start at top of log */
2402         iwl3945_print_event_log(priv, 0, next_entry, mode);
2403
2404         iwl_release_nic_access(priv);
2405 }
2406
2407 static void iwl3945_error_recovery(struct iwl_priv *priv)
2408 {
2409         unsigned long flags;
2410
2411         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2412                sizeof(priv->staging_rxon));
2413         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2414         iwl3945_commit_rxon(priv);
2415
2416         iwl3945_add_station(priv, priv->bssid, 1, 0);
2417
2418         spin_lock_irqsave(&priv->lock, flags);
2419         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2420         priv->error_recovering = 0;
2421         spin_unlock_irqrestore(&priv->lock, flags);
2422 }
2423
2424 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
2425 {
2426         u32 inta, handled = 0;
2427         u32 inta_fh;
2428         unsigned long flags;
2429 #ifdef CONFIG_IWLWIFI_DEBUG
2430         u32 inta_mask;
2431 #endif
2432
2433         spin_lock_irqsave(&priv->lock, flags);
2434
2435         /* Ack/clear/reset pending uCode interrupts.
2436          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2437          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2438         inta = iwl_read32(priv, CSR_INT);
2439         iwl_write32(priv, CSR_INT, inta);
2440
2441         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2442          * Any new interrupts that happen after this, either while we're
2443          * in this tasklet, or later, will show up in next ISR/tasklet. */
2444         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2445         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2446
2447 #ifdef CONFIG_IWLWIFI_DEBUG
2448         if (priv->debug_level & IWL_DL_ISR) {
2449                 /* just for debug */
2450                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2451                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2452                               inta, inta_mask, inta_fh);
2453         }
2454 #endif
2455
2456         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2457          * atomic, make sure that inta covers all the interrupts that
2458          * we've discovered, even if FH interrupt came in just after
2459          * reading CSR_INT. */
2460         if (inta_fh & CSR39_FH_INT_RX_MASK)
2461                 inta |= CSR_INT_BIT_FH_RX;
2462         if (inta_fh & CSR39_FH_INT_TX_MASK)
2463                 inta |= CSR_INT_BIT_FH_TX;
2464
2465         /* Now service all interrupt bits discovered above. */
2466         if (inta & CSR_INT_BIT_HW_ERR) {
2467                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
2468
2469                 /* Tell the device to stop sending interrupts */
2470                 iwl3945_disable_interrupts(priv);
2471
2472                 iwl_irq_handle_error(priv);
2473
2474                 handled |= CSR_INT_BIT_HW_ERR;
2475
2476                 spin_unlock_irqrestore(&priv->lock, flags);
2477
2478                 return;
2479         }
2480
2481 #ifdef CONFIG_IWLWIFI_DEBUG
2482         if (priv->debug_level & (IWL_DL_ISR)) {
2483                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2484                 if (inta & CSR_INT_BIT_SCD)
2485                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
2486                                       "the frame/frames.\n");
2487
2488                 /* Alive notification via Rx interrupt will do the real work */
2489                 if (inta & CSR_INT_BIT_ALIVE)
2490                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
2491         }
2492 #endif
2493         /* Safely ignore these bits for debug checks below */
2494         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2495
2496         /* Error detected by uCode */
2497         if (inta & CSR_INT_BIT_SW_ERR) {
2498                 IWL_ERR(priv, "Microcode SW error detected. "
2499                         "Restarting 0x%X.\n", inta);
2500                 iwl_irq_handle_error(priv);
2501                 handled |= CSR_INT_BIT_SW_ERR;
2502         }
2503
2504         /* uCode wakes up after power-down sleep */
2505         if (inta & CSR_INT_BIT_WAKEUP) {
2506                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
2507                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2508                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2509                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2510                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2511                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2512                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2513                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2514
2515                 handled |= CSR_INT_BIT_WAKEUP;
2516         }
2517
2518         /* All uCode command responses, including Tx command responses,
2519          * Rx "responses" (frame-received notification), and other
2520          * notifications from uCode come through here*/
2521         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2522                 iwl3945_rx_handle(priv);
2523                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2524         }
2525
2526         if (inta & CSR_INT_BIT_FH_TX) {
2527                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
2528
2529                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
2530                 if (!iwl_grab_nic_access(priv)) {
2531                         iwl_write_direct32(priv, FH39_TCSR_CREDIT
2532                                              (FH39_SRVC_CHNL), 0x0);
2533                         iwl_release_nic_access(priv);
2534                 }
2535                 handled |= CSR_INT_BIT_FH_TX;
2536         }
2537
2538         if (inta & ~handled)
2539                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
2540
2541         if (inta & ~CSR_INI_SET_MASK) {
2542                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
2543                          inta & ~CSR_INI_SET_MASK);
2544                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
2545         }
2546
2547         /* Re-enable all interrupts */
2548         /* only Re-enable if disabled by irq */
2549         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2550                 iwl3945_enable_interrupts(priv);
2551
2552 #ifdef CONFIG_IWLWIFI_DEBUG
2553         if (priv->debug_level & (IWL_DL_ISR)) {
2554                 inta = iwl_read32(priv, CSR_INT);
2555                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2556                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2557                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2558                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2559         }
2560 #endif
2561         spin_unlock_irqrestore(&priv->lock, flags);
2562 }
2563
2564 static irqreturn_t iwl3945_isr(int irq, void *data)
2565 {
2566         struct iwl_priv *priv = data;
2567         u32 inta, inta_mask;
2568         u32 inta_fh;
2569         if (!priv)
2570                 return IRQ_NONE;
2571
2572         spin_lock(&priv->lock);
2573
2574         /* Disable (but don't clear!) interrupts here to avoid
2575          *    back-to-back ISRs and sporadic interrupts from our NIC.
2576          * If we have something to service, the tasklet will re-enable ints.
2577          * If we *don't* have something, we'll re-enable before leaving here. */
2578         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2579         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2580
2581         /* Discover which interrupts are active/pending */
2582         inta = iwl_read32(priv, CSR_INT);
2583         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2584
2585         /* Ignore interrupt if there's nothing in NIC to service.
2586          * This may be due to IRQ shared with another device,
2587          * or due to sporadic interrupts thrown from our NIC. */
2588         if (!inta && !inta_fh) {
2589                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
2590                 goto none;
2591         }
2592
2593         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2594                 /* Hardware disappeared */
2595                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2596                 goto unplugged;
2597         }
2598
2599         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2600                       inta, inta_mask, inta_fh);
2601
2602         inta &= ~CSR_INT_BIT_SCD;
2603
2604         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
2605         if (likely(inta || inta_fh))
2606                 tasklet_schedule(&priv->irq_tasklet);
2607 unplugged:
2608         spin_unlock(&priv->lock);
2609
2610         return IRQ_HANDLED;
2611
2612  none:
2613         /* re-enable interrupts here since we don't have anything to service. */
2614         /* only Re-enable if disabled by irq */
2615         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2616                 iwl3945_enable_interrupts(priv);
2617         spin_unlock(&priv->lock);
2618         return IRQ_NONE;
2619 }
2620
2621 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
2622                                          enum ieee80211_band band,
2623                                      u8 is_active, u8 n_probes,
2624                                      struct iwl3945_scan_channel *scan_ch)
2625 {
2626         const struct ieee80211_channel *channels = NULL;
2627         const struct ieee80211_supported_band *sband;
2628         const struct iwl_channel_info *ch_info;
2629         u16 passive_dwell = 0;
2630         u16 active_dwell = 0;
2631         int added, i;
2632
2633         sband = iwl_get_hw_mode(priv, band);
2634         if (!sband)
2635                 return 0;
2636
2637         channels = sband->channels;
2638
2639         active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
2640         passive_dwell = iwl_get_passive_dwell_time(priv, band);
2641
2642         if (passive_dwell <= active_dwell)
2643                 passive_dwell = active_dwell + 1;
2644
2645         for (i = 0, added = 0; i < sband->n_channels; i++) {
2646                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2647                         continue;
2648
2649                 scan_ch->channel = channels[i].hw_value;
2650
2651                 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
2652                 if (!is_channel_valid(ch_info)) {
2653                         IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
2654                                        scan_ch->channel);
2655                         continue;
2656                 }
2657
2658                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2659                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2660                 /* If passive , set up for auto-switch
2661                  *  and use long active_dwell time.
2662                  */
2663                 if (!is_active || is_channel_passive(ch_info) ||
2664                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
2665                         scan_ch->type = 0;      /* passive */
2666                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
2667                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2668                 } else {
2669                         scan_ch->type = 1;      /* active */
2670                 }
2671
2672                 /* Set direct probe bits. These may be used both for active
2673                  * scan channels (probes gets sent right away),
2674                  * or for passive channels (probes get se sent only after
2675                  * hearing clear Rx packet).*/
2676                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2677                         if (n_probes)
2678                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2679                 } else {
2680                         /* uCode v1 does not allow setting direct probe bits on
2681                          * passive channel. */
2682                         if ((scan_ch->type & 1) && n_probes)
2683                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2684                 }
2685
2686                 /* Set txpower levels to defaults */
2687                 scan_ch->tpc.dsp_atten = 110;
2688                 /* scan_pwr_info->tpc.dsp_atten; */
2689
2690                 /*scan_pwr_info->tpc.tx_gain; */
2691                 if (band == IEEE80211_BAND_5GHZ)
2692                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2693                 else {
2694                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2695                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2696                          * power level:
2697                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2698                          */
2699                 }
2700
2701                 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2702                                scan_ch->channel,
2703                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2704                                (scan_ch->type & 1) ?
2705                                active_dwell : passive_dwell);
2706
2707                 scan_ch++;
2708                 added++;
2709         }
2710
2711         IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2712         return added;
2713 }
2714
2715 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2716                               struct ieee80211_rate *rates)
2717 {
2718         int i;
2719
2720         for (i = 0; i < IWL_RATE_COUNT; i++) {
2721                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2722                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2723                 rates[i].hw_value_short = i;
2724                 rates[i].flags = 0;
2725                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2726                         /*
2727                          * If CCK != 1M then set short preamble rate flag.
2728                          */
2729                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2730                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2731                 }
2732         }
2733 }
2734
2735 /******************************************************************************
2736  *
2737  * uCode download functions
2738  *
2739  ******************************************************************************/
2740
2741 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2742 {
2743         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2744         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2745         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2746         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2747         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2748         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2749 }
2750
2751 /**
2752  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2753  *     looking at all data.
2754  */
2755 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2756 {
2757         u32 val;
2758         u32 save_len = len;
2759         int rc = 0;
2760         u32 errcnt;
2761
2762         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2763
2764         rc = iwl_grab_nic_access(priv);
2765         if (rc)
2766                 return rc;
2767
2768         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2769                                IWL39_RTC_INST_LOWER_BOUND);
2770
2771         errcnt = 0;
2772         for (; len > 0; len -= sizeof(u32), image++) {
2773                 /* read data comes through single port, auto-incr addr */
2774                 /* NOTE: Use the debugless read so we don't flood kernel log
2775                  * if IWL_DL_IO is set */
2776                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2777                 if (val != le32_to_cpu(*image)) {
2778                         IWL_ERR(priv, "uCode INST section is invalid at "
2779                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2780                                   save_len - len, val, le32_to_cpu(*image));
2781                         rc = -EIO;
2782                         errcnt++;
2783                         if (errcnt >= 20)
2784                                 break;
2785                 }
2786         }
2787
2788         iwl_release_nic_access(priv);
2789
2790         if (!errcnt)
2791                 IWL_DEBUG_INFO(priv,
2792                         "ucode image in INSTRUCTION memory is good\n");
2793
2794         return rc;
2795 }
2796
2797
2798 /**
2799  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2800  *   using sample data 100 bytes apart.  If these sample points are good,
2801  *   it's a pretty good bet that everything between them is good, too.
2802  */
2803 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2804 {
2805         u32 val;
2806         int rc = 0;
2807         u32 errcnt = 0;
2808         u32 i;
2809
2810         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2811
2812         rc = iwl_grab_nic_access(priv);
2813         if (rc)
2814                 return rc;
2815
2816         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2817                 /* read data comes through single port, auto-incr addr */
2818                 /* NOTE: Use the debugless read so we don't flood kernel log
2819                  * if IWL_DL_IO is set */
2820                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2821                         i + IWL39_RTC_INST_LOWER_BOUND);
2822                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2823                 if (val != le32_to_cpu(*image)) {
2824 #if 0 /* Enable this if you want to see details */
2825                         IWL_ERR(priv, "uCode INST section is invalid at "
2826                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2827                                   i, val, *image);
2828 #endif
2829                         rc = -EIO;
2830                         errcnt++;
2831                         if (errcnt >= 3)
2832                                 break;
2833                 }
2834         }
2835
2836         iwl_release_nic_access(priv);
2837
2838         return rc;
2839 }
2840
2841
2842 /**
2843  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2844  *    and verify its contents
2845  */
2846 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2847 {
2848         __le32 *image;
2849         u32 len;
2850         int rc = 0;
2851
2852         /* Try bootstrap */
2853         image = (__le32 *)priv->ucode_boot.v_addr;
2854         len = priv->ucode_boot.len;
2855         rc = iwl3945_verify_inst_sparse(priv, image, len);
2856         if (rc == 0) {
2857                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2858                 return 0;
2859         }
2860
2861         /* Try initialize */
2862         image = (__le32 *)priv->ucode_init.v_addr;
2863         len = priv->ucode_init.len;
2864         rc = iwl3945_verify_inst_sparse(priv, image, len);
2865         if (rc == 0) {
2866                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2867                 return 0;
2868         }
2869
2870         /* Try runtime/protocol */
2871         image = (__le32 *)priv->ucode_code.v_addr;
2872         len = priv->ucode_code.len;
2873         rc = iwl3945_verify_inst_sparse(priv, image, len);
2874         if (rc == 0) {
2875                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2876                 return 0;
2877         }
2878
2879         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2880
2881         /* Since nothing seems to match, show first several data entries in
2882          * instruction SRAM, so maybe visual inspection will give a clue.
2883          * Selection of bootstrap image (vs. other images) is arbitrary. */
2884         image = (__le32 *)priv->ucode_boot.v_addr;
2885         len = priv->ucode_boot.len;
2886         rc = iwl3945_verify_inst_full(priv, image, len);
2887
2888         return rc;
2889 }
2890
2891 static void iwl3945_nic_start(struct iwl_priv *priv)
2892 {
2893         /* Remove all resets to allow NIC to operate */
2894         iwl_write32(priv, CSR_RESET, 0);
2895 }
2896
2897 /**
2898  * iwl3945_read_ucode - Read uCode images from disk file.
2899  *
2900  * Copy into buffers for card to fetch via bus-mastering
2901  */
2902 static int iwl3945_read_ucode(struct iwl_priv *priv)
2903 {
2904         struct iwl_ucode *ucode;
2905         int ret = -EINVAL, index;
2906         const struct firmware *ucode_raw;
2907         /* firmware file name contains uCode/driver compatibility version */
2908         const char *name_pre = priv->cfg->fw_name_pre;
2909         const unsigned int api_max = priv->cfg->ucode_api_max;
2910         const unsigned int api_min = priv->cfg->ucode_api_min;
2911         char buf[25];
2912         u8 *src;
2913         size_t len;
2914         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2915
2916         /* Ask kernel firmware_class module to get the boot firmware off disk.
2917          * request_firmware() is synchronous, file is in memory on return. */
2918         for (index = api_max; index >= api_min; index--) {
2919                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2920                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2921                 if (ret < 0) {
2922                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
2923                                   buf, ret);
2924                         if (ret == -ENOENT)
2925                                 continue;
2926                         else
2927                                 goto error;
2928                 } else {
2929                         if (index < api_max)
2930                                 IWL_ERR(priv, "Loaded firmware %s, "
2931                                         "which is deprecated. "
2932                                         " Please use API v%u instead.\n",
2933                                           buf, api_max);
2934                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2935                                        "(%zd bytes) from disk\n",
2936                                        buf, ucode_raw->size);
2937                         break;
2938                 }
2939         }
2940
2941         if (ret < 0)
2942                 goto error;
2943
2944         /* Make sure that we got at least our header! */
2945         if (ucode_raw->size < sizeof(*ucode)) {
2946                 IWL_ERR(priv, "File size way too small!\n");
2947                 ret = -EINVAL;
2948                 goto err_release;
2949         }
2950
2951         /* Data from ucode file:  header followed by uCode images */
2952         ucode = (void *)ucode_raw->data;
2953
2954         priv->ucode_ver = le32_to_cpu(ucode->ver);
2955         api_ver = IWL_UCODE_API(priv->ucode_ver);
2956         inst_size = le32_to_cpu(ucode->inst_size);
2957         data_size = le32_to_cpu(ucode->data_size);
2958         init_size = le32_to_cpu(ucode->init_size);
2959         init_data_size = le32_to_cpu(ucode->init_data_size);
2960         boot_size = le32_to_cpu(ucode->boot_size);
2961
2962         /* api_ver should match the api version forming part of the
2963          * firmware filename ... but we don't check for that and only rely
2964          * on the API version read from firware header from here on forward */
2965
2966         if (api_ver < api_min || api_ver > api_max) {
2967                 IWL_ERR(priv, "Driver unable to support your firmware API. "
2968                           "Driver supports v%u, firmware is v%u.\n",
2969                           api_max, api_ver);
2970                 priv->ucode_ver = 0;
2971                 ret = -EINVAL;
2972                 goto err_release;
2973         }
2974         if (api_ver != api_max)
2975                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2976                           "got %u. New firmware can be obtained "
2977                           "from http://www.intellinuxwireless.org.\n",
2978                           api_max, api_ver);
2979
2980         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2981                 IWL_UCODE_MAJOR(priv->ucode_ver),
2982                 IWL_UCODE_MINOR(priv->ucode_ver),
2983                 IWL_UCODE_API(priv->ucode_ver),
2984                 IWL_UCODE_SERIAL(priv->ucode_ver));
2985
2986         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2987                        priv->ucode_ver);
2988         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2989                        inst_size);
2990         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2991                        data_size);
2992         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2993                        init_size);
2994         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2995                        init_data_size);
2996         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2997                        boot_size);
2998
2999
3000         /* Verify size of file vs. image size info in file's header */
3001         if (ucode_raw->size < sizeof(*ucode) +
3002                 inst_size + data_size + init_size +
3003                 init_data_size + boot_size) {
3004
3005                 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
3006                                ucode_raw->size);
3007                 ret = -EINVAL;
3008                 goto err_release;
3009         }
3010
3011         /* Verify that uCode images will fit in card's SRAM */
3012         if (inst_size > IWL39_MAX_INST_SIZE) {
3013                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
3014                                inst_size);
3015                 ret = -EINVAL;
3016                 goto err_release;
3017         }
3018
3019         if (data_size > IWL39_MAX_DATA_SIZE) {
3020                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
3021                                data_size);
3022                 ret = -EINVAL;
3023                 goto err_release;
3024         }
3025         if (init_size > IWL39_MAX_INST_SIZE) {
3026                 IWL_DEBUG_INFO(priv,
3027                                 "uCode init instr len %d too large to fit in\n",
3028                                 init_size);
3029                 ret = -EINVAL;
3030                 goto err_release;
3031         }
3032         if (init_data_size > IWL39_MAX_DATA_SIZE) {
3033                 IWL_DEBUG_INFO(priv,
3034                                 "uCode init data len %d too large to fit in\n",
3035                                 init_data_size);
3036                 ret = -EINVAL;
3037                 goto err_release;
3038         }
3039         if (boot_size > IWL39_MAX_BSM_SIZE) {
3040                 IWL_DEBUG_INFO(priv,
3041                                 "uCode boot instr len %d too large to fit in\n",
3042                                 boot_size);
3043                 ret = -EINVAL;
3044                 goto err_release;
3045         }
3046
3047         /* Allocate ucode buffers for card's bus-master loading ... */
3048
3049         /* Runtime instructions and 2 copies of data:
3050          * 1) unmodified from disk
3051          * 2) backup cache for save/restore during power-downs */
3052         priv->ucode_code.len = inst_size;
3053         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3054
3055         priv->ucode_data.len = data_size;
3056         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3057
3058         priv->ucode_data_backup.len = data_size;
3059         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3060
3061         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
3062             !priv->ucode_data_backup.v_addr)
3063                 goto err_pci_alloc;
3064
3065         /* Initialization instructions and data */
3066         if (init_size && init_data_size) {
3067                 priv->ucode_init.len = init_size;
3068                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3069
3070                 priv->ucode_init_data.len = init_data_size;
3071                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3072
3073                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3074                         goto err_pci_alloc;
3075         }
3076
3077         /* Bootstrap (instructions only, no data) */
3078         if (boot_size) {
3079                 priv->ucode_boot.len = boot_size;
3080                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3081
3082                 if (!priv->ucode_boot.v_addr)
3083                         goto err_pci_alloc;
3084         }
3085
3086         /* Copy images into buffers for card's bus-master reads ... */
3087
3088         /* Runtime instructions (first block of data in file) */
3089         src = &ucode->data[0];
3090         len = priv->ucode_code.len;
3091         IWL_DEBUG_INFO(priv,
3092                 "Copying (but not loading) uCode instr len %zd\n", len);
3093         memcpy(priv->ucode_code.v_addr, src, len);
3094         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3095                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3096
3097         /* Runtime data (2nd block)
3098          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
3099         src = &ucode->data[inst_size];
3100         len = priv->ucode_data.len;
3101         IWL_DEBUG_INFO(priv,
3102                 "Copying (but not loading) uCode data len %zd\n", len);
3103         memcpy(priv->ucode_data.v_addr, src, len);
3104         memcpy(priv->ucode_data_backup.v_addr, src, len);
3105
3106         /* Initialization instructions (3rd block) */
3107         if (init_size) {
3108                 src = &ucode->data[inst_size + data_size];
3109                 len = priv->ucode_init.len;
3110                 IWL_DEBUG_INFO(priv,
3111                         "Copying (but not loading) init instr len %zd\n", len);
3112                 memcpy(priv->ucode_init.v_addr, src, len);
3113         }
3114
3115         /* Initialization data (4th block) */
3116         if (init_data_size) {
3117                 src = &ucode->data[inst_size + data_size + init_size];
3118                 len = priv->ucode_init_data.len;
3119                 IWL_DEBUG_INFO(priv,
3120                         "Copying (but not loading) init data len %zd\n", len);
3121                 memcpy(priv->ucode_init_data.v_addr, src, len);
3122         }
3123
3124         /* Bootstrap instructions (5th block) */
3125         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3126         len = priv->ucode_boot.len;
3127         IWL_DEBUG_INFO(priv,
3128                 "Copying (but not loading) boot instr len %zd\n", len);
3129         memcpy(priv->ucode_boot.v_addr, src, len);
3130
3131         /* We have our copies now, allow OS release its copies */
3132         release_firmware(ucode_raw);
3133         return 0;
3134
3135  err_pci_alloc:
3136         IWL_ERR(priv, "failed to allocate pci memory\n");
3137         ret = -ENOMEM;
3138         iwl3945_dealloc_ucode_pci(priv);
3139
3140  err_release:
3141         release_firmware(ucode_raw);
3142
3143  error:
3144         return ret;
3145 }
3146
3147
3148 /**
3149  * iwl3945_set_ucode_ptrs - Set uCode address location
3150  *
3151  * Tell initialization uCode where to find runtime uCode.
3152  *
3153  * BSM registers initially contain pointers to initialization uCode.
3154  * We need to replace them to load runtime uCode inst and data,
3155  * and to save runtime data when powering down.
3156  */
3157 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
3158 {
3159         dma_addr_t pinst;
3160         dma_addr_t pdata;
3161         int rc = 0;
3162         unsigned long flags;
3163
3164         /* bits 31:0 for 3945 */
3165         pinst = priv->ucode_code.p_addr;
3166         pdata = priv->ucode_data_backup.p_addr;
3167
3168         spin_lock_irqsave(&priv->lock, flags);
3169         rc = iwl_grab_nic_access(priv);
3170         if (rc) {
3171                 spin_unlock_irqrestore(&priv->lock, flags);
3172                 return rc;
3173         }
3174
3175         /* Tell bootstrap uCode where to find image to load */
3176         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
3177         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
3178         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
3179                                  priv->ucode_data.len);
3180
3181         /* Inst byte count must be last to set up, bit 31 signals uCode
3182          *   that all new ptr/size info is in place */
3183         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
3184                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
3185
3186         iwl_release_nic_access(priv);
3187
3188         spin_unlock_irqrestore(&priv->lock, flags);
3189
3190         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
3191
3192         return rc;
3193 }
3194
3195 /**
3196  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
3197  *
3198  * Called after REPLY_ALIVE notification received from "initialize" uCode.
3199  *
3200  * Tell "initialize" uCode to go ahead and load the runtime uCode.
3201  */
3202 static void iwl3945_init_alive_start(struct iwl_priv *priv)
3203 {
3204         /* Check alive response for "valid" sign from uCode */
3205         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
3206                 /* We had an error bringing up the hardware, so take it
3207                  * all the way back down so we can try again */
3208                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
3209                 goto restart;
3210         }
3211
3212         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
3213          * This is a paranoid check, because we would not have gotten the
3214          * "initialize" alive if code weren't properly loaded.  */
3215         if (iwl3945_verify_ucode(priv)) {
3216                 /* Runtime instruction load was bad;
3217                  * take it all the way back down so we can try again */
3218                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
3219                 goto restart;
3220         }
3221
3222         /* Send pointers to protocol/runtime uCode image ... init code will
3223          * load and launch runtime uCode, which will send us another "Alive"
3224          * notification. */
3225         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
3226         if (iwl3945_set_ucode_ptrs(priv)) {
3227                 /* Runtime instruction load won't happen;
3228                  * take it all the way back down so we can try again */
3229                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
3230                 goto restart;
3231         }
3232         return;
3233
3234  restart:
3235         queue_work(priv->workqueue, &priv->restart);
3236 }
3237
3238
3239 /* temporary */
3240 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
3241                                      struct sk_buff *skb);
3242
3243 /**
3244  * iwl3945_alive_start - called after REPLY_ALIVE notification received
3245  *                   from protocol/runtime uCode (initialization uCode's
3246  *                   Alive gets handled by iwl3945_init_alive_start()).
3247  */
3248 static void iwl3945_alive_start(struct iwl_priv *priv)
3249 {
3250         int rc = 0;
3251         int thermal_spin = 0;
3252         u32 rfkill;
3253
3254         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
3255
3256         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3257                 /* We had an error bringing up the hardware, so take it
3258                  * all the way back down so we can try again */
3259                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
3260                 goto restart;
3261         }
3262
3263         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3264          * This is a paranoid check, because we would not have gotten the
3265          * "runtime" alive if code weren't properly loaded.  */
3266         if (iwl3945_verify_ucode(priv)) {
3267                 /* Runtime instruction load was bad;
3268                  * take it all the way back down so we can try again */
3269                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
3270                 goto restart;
3271         }
3272
3273         iwl3945_clear_stations_table(priv);
3274
3275         rc = iwl_grab_nic_access(priv);
3276         if (rc) {
3277                 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
3278                 return;
3279         }
3280
3281         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
3282         IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
3283         iwl_release_nic_access(priv);
3284
3285         if (rfkill & 0x1) {
3286                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3287                 /* if RFKILL is not on, then wait for thermal
3288                  * sensor in adapter to kick in */
3289                 while (iwl3945_hw_get_temperature(priv) == 0) {
3290                         thermal_spin++;
3291                         udelay(10);
3292                 }
3293
3294                 if (thermal_spin)
3295                         IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
3296                                        thermal_spin * 10);
3297         } else
3298                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3299
3300         /* After the ALIVE response, we can send commands to 3945 uCode */
3301         set_bit(STATUS_ALIVE, &priv->status);
3302
3303         /* Clear out the uCode error bit if it is set */
3304         clear_bit(STATUS_FW_ERROR, &priv->status);
3305
3306         if (iwl_is_rfkill(priv))
3307                 return;
3308
3309         ieee80211_wake_queues(priv->hw);
3310
3311         priv->active_rate = priv->rates_mask;
3312         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3313
3314         iwl_power_update_mode(priv, false);
3315
3316         if (iwl_is_associated(priv)) {
3317                 struct iwl3945_rxon_cmd *active_rxon =
3318                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
3319
3320                 memcpy(&priv->staging_rxon, &priv->active_rxon,
3321                        sizeof(priv->staging_rxon));
3322                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3323         } else {
3324                 /* Initialize our rx_config data */
3325                 iwl_connection_init_rx_config(priv, priv->iw_mode);
3326         }
3327
3328         /* Configure Bluetooth device coexistence support */
3329         iwl_send_bt_config(priv);
3330
3331         /* Configure the adapter for unassociated operation */
3332         iwl3945_commit_rxon(priv);
3333
3334         iwl3945_reg_txpower_periodic(priv);
3335
3336         iwl3945_led_register(priv);
3337
3338         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
3339         set_bit(STATUS_READY, &priv->status);
3340         wake_up_interruptible(&priv->wait_command_queue);
3341
3342         if (priv->error_recovering)
3343                 iwl3945_error_recovery(priv);
3344
3345         /* reassociate for ADHOC mode */
3346         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
3347                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
3348                                                                 priv->vif);
3349                 if (beacon)
3350                         iwl3945_mac_beacon_update(priv->hw, beacon);
3351         }
3352
3353         return;
3354
3355  restart:
3356         queue_work(priv->workqueue, &priv->restart);
3357 }
3358
3359 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
3360
3361 static void __iwl3945_down(struct iwl_priv *priv)
3362 {
3363         unsigned long flags;
3364         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3365         struct ieee80211_conf *conf = NULL;
3366
3367         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
3368
3369         conf = ieee80211_get_hw_conf(priv->hw);
3370
3371         if (!exit_pending)
3372                 set_bit(STATUS_EXIT_PENDING, &priv->status);
3373
3374         iwl3945_led_unregister(priv);
3375         iwl3945_clear_stations_table(priv);
3376
3377         /* Unblock any waiting calls */
3378         wake_up_interruptible_all(&priv->wait_command_queue);
3379
3380         /* Wipe out the EXIT_PENDING status bit if we are not actually
3381          * exiting the module */
3382         if (!exit_pending)
3383                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3384
3385         /* stop and reset the on-board processor */
3386         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3387
3388         /* tell the device to stop sending interrupts */
3389         spin_lock_irqsave(&priv->lock, flags);
3390         iwl3945_disable_interrupts(priv);
3391         spin_unlock_irqrestore(&priv->lock, flags);
3392         iwl_synchronize_irq(priv);
3393
3394         if (priv->mac80211_registered)
3395                 ieee80211_stop_queues(priv->hw);
3396
3397         /* If we have not previously called iwl3945_init() then
3398          * clear all bits but the RF Kill and SUSPEND bits and return */
3399         if (!iwl_is_init(priv)) {
3400                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3401                                         STATUS_RF_KILL_HW |
3402                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3403                                         STATUS_RF_KILL_SW |
3404                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3405                                         STATUS_GEO_CONFIGURED |
3406                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3407                                         STATUS_IN_SUSPEND |
3408                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3409                                         STATUS_EXIT_PENDING;
3410                 goto exit;
3411         }
3412
3413         /* ...otherwise clear out all the status bits but the RF Kill and
3414          * SUSPEND bits and continue taking the NIC down. */
3415         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3416                                 STATUS_RF_KILL_HW |
3417                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3418                                 STATUS_RF_KILL_SW |
3419                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3420                                 STATUS_GEO_CONFIGURED |
3421                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3422                                 STATUS_IN_SUSPEND |
3423                         test_bit(STATUS_FW_ERROR, &priv->status) <<
3424                                 STATUS_FW_ERROR |
3425                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3426                                 STATUS_EXIT_PENDING;
3427
3428         priv->cfg->ops->lib->apm_ops.reset(priv);
3429         spin_lock_irqsave(&priv->lock, flags);
3430         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3431         spin_unlock_irqrestore(&priv->lock, flags);
3432
3433         iwl3945_hw_txq_ctx_stop(priv);
3434         iwl3945_hw_rxq_stop(priv);
3435
3436         spin_lock_irqsave(&priv->lock, flags);
3437         if (!iwl_grab_nic_access(priv)) {
3438                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3439                                          APMG_CLK_VAL_DMA_CLK_RQT);
3440                 iwl_release_nic_access(priv);
3441         }
3442         spin_unlock_irqrestore(&priv->lock, flags);
3443
3444         udelay(5);
3445
3446         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
3447                 priv->cfg->ops->lib->apm_ops.stop(priv);
3448         else
3449                 priv->cfg->ops->lib->apm_ops.reset(priv);
3450
3451  exit:
3452         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3453
3454         if (priv->ibss_beacon)
3455                 dev_kfree_skb(priv->ibss_beacon);
3456         priv->ibss_beacon = NULL;
3457
3458         /* clear out any free frames */
3459         iwl3945_clear_free_frames(priv);
3460 }
3461
3462 static void iwl3945_down(struct iwl_priv *priv)
3463 {
3464         mutex_lock(&priv->mutex);
3465         __iwl3945_down(priv);
3466         mutex_unlock(&priv->mutex);
3467
3468         iwl3945_cancel_deferred_work(priv);
3469 }
3470
3471 #define MAX_HW_RESTARTS 5
3472
3473 static int __iwl3945_up(struct iwl_priv *priv)
3474 {
3475         int rc, i;
3476
3477         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3478                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
3479                 return -EIO;
3480         }
3481
3482         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3483                 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
3484                             "parameter)\n");
3485                 return -ENODEV;
3486         }
3487
3488         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3489                 IWL_ERR(priv, "ucode not available for device bring up\n");
3490                 return -EIO;
3491         }
3492
3493         /* If platform's RF_KILL switch is NOT set to KILL */
3494         if (iwl_read32(priv, CSR_GP_CNTRL) &
3495                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3496                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3497         else {
3498                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3499                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3500                         IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3501                         return -ENODEV;
3502                 }
3503         }
3504
3505         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3506
3507         rc = iwl3945_hw_nic_init(priv);
3508         if (rc) {
3509                 IWL_ERR(priv, "Unable to int nic\n");
3510                 return rc;
3511         }
3512
3513         /* make sure rfkill handshake bits are cleared */
3514         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3515         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3516                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3517
3518         /* clear (again), then enable host interrupts */
3519         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3520         iwl3945_enable_interrupts(priv);
3521
3522         /* really make sure rfkill handshake bits are cleared */
3523         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3524         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3525
3526         /* Copy original ucode data image from disk into backup cache.
3527          * This will be used to initialize the on-board processor's
3528          * data SRAM for a clean start when the runtime program first loads. */
3529         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3530                priv->ucode_data.len);
3531
3532         /* We return success when we resume from suspend and rf_kill is on. */
3533         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3534                 return 0;
3535
3536         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3537
3538                 iwl3945_clear_stations_table(priv);
3539
3540                 /* load bootstrap state machine,
3541                  * load bootstrap program into processor's memory,
3542                  * prepare to load the "initialize" uCode */
3543                 priv->cfg->ops->lib->load_ucode(priv);
3544
3545                 if (rc) {
3546                         IWL_ERR(priv,
3547                                 "Unable to set up bootstrap uCode: %d\n", rc);
3548                         continue;
3549                 }
3550
3551                 /* start card; "initialize" will load runtime ucode */
3552                 iwl3945_nic_start(priv);
3553
3554                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
3555
3556                 return 0;
3557         }
3558
3559         set_bit(STATUS_EXIT_PENDING, &priv->status);
3560         __iwl3945_down(priv);
3561         clear_bit(STATUS_EXIT_PENDING, &priv->status);
3562
3563         /* tried to restart and config the device for as long as our
3564          * patience could withstand */
3565         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3566         return -EIO;
3567 }
3568
3569
3570 /*****************************************************************************
3571  *
3572  * Workqueue callbacks
3573  *
3574  *****************************************************************************/
3575
3576 static void iwl3945_bg_init_alive_start(struct work_struct *data)
3577 {
3578         struct iwl_priv *priv =
3579             container_of(data, struct iwl_priv, init_alive_start.work);
3580
3581         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3582                 return;
3583
3584         mutex_lock(&priv->mutex);
3585         iwl3945_init_alive_start(priv);
3586         mutex_unlock(&priv->mutex);
3587 }
3588
3589 static void iwl3945_bg_alive_start(struct work_struct *data)
3590 {
3591         struct iwl_priv *priv =
3592             container_of(data, struct iwl_priv, alive_start.work);
3593
3594         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3595                 return;
3596
3597         mutex_lock(&priv->mutex);
3598         iwl3945_alive_start(priv);
3599         mutex_unlock(&priv->mutex);
3600 }
3601
3602 static void iwl3945_rfkill_poll(struct work_struct *data)
3603 {
3604         struct iwl_priv *priv =
3605             container_of(data, struct iwl_priv, rfkill_poll.work);
3606         unsigned long status = priv->status;
3607
3608         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3609                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3610         else
3611                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3612
3613         if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
3614                 queue_work(priv->workqueue, &priv->rf_kill);
3615
3616         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3617                            round_jiffies_relative(2 * HZ));
3618
3619 }
3620
3621 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3622 static void iwl3945_bg_request_scan(struct work_struct *data)
3623 {
3624         struct iwl_priv *priv =
3625             container_of(data, struct iwl_priv, request_scan);
3626         struct iwl_host_cmd cmd = {
3627                 .id = REPLY_SCAN_CMD,
3628                 .len = sizeof(struct iwl3945_scan_cmd),
3629                 .meta.flags = CMD_SIZE_HUGE,
3630         };
3631         int rc = 0;
3632         struct iwl3945_scan_cmd *scan;
3633         struct ieee80211_conf *conf = NULL;
3634         u8 n_probes = 2;
3635         enum ieee80211_band band;
3636         DECLARE_SSID_BUF(ssid);
3637
3638         conf = ieee80211_get_hw_conf(priv->hw);
3639
3640         mutex_lock(&priv->mutex);
3641
3642         if (!iwl_is_ready(priv)) {
3643                 IWL_WARN(priv, "request scan called when driver not ready.\n");
3644                 goto done;
3645         }
3646
3647         /* Make sure the scan wasn't canceled before this queued work
3648          * was given the chance to run... */
3649         if (!test_bit(STATUS_SCANNING, &priv->status))
3650                 goto done;
3651
3652         /* This should never be called or scheduled if there is currently
3653          * a scan active in the hardware. */
3654         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3655                 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests  "
3656                                 "Ignoring second request.\n");
3657                 rc = -EIO;
3658                 goto done;
3659         }
3660
3661         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3662                 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
3663                 goto done;
3664         }
3665
3666         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3667                 IWL_DEBUG_HC(priv,
3668                         "Scan request while abort pending. Queuing.\n");
3669                 goto done;
3670         }
3671
3672         if (iwl_is_rfkill(priv)) {
3673                 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
3674                 goto done;
3675         }
3676
3677         if (!test_bit(STATUS_READY, &priv->status)) {
3678                 IWL_DEBUG_HC(priv,
3679                         "Scan request while uninitialized. Queuing.\n");
3680                 goto done;
3681         }
3682
3683         if (!priv->scan_bands) {
3684                 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
3685                 goto done;
3686         }
3687
3688         if (!priv->scan) {
3689                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
3690                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3691                 if (!priv->scan) {
3692                         rc = -ENOMEM;
3693                         goto done;
3694                 }
3695         }
3696         scan = priv->scan;
3697         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
3698
3699         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3700         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3701
3702         if (iwl_is_associated(priv)) {
3703                 u16 interval = 0;
3704                 u32 extra;
3705                 u32 suspend_time = 100;
3706                 u32 scan_suspend_time = 100;
3707                 unsigned long flags;
3708
3709                 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3710
3711                 spin_lock_irqsave(&priv->lock, flags);
3712                 interval = priv->beacon_int;
3713                 spin_unlock_irqrestore(&priv->lock, flags);
3714
3715                 scan->suspend_time = 0;
3716                 scan->max_out_time = cpu_to_le32(200 * 1024);
3717                 if (!interval)
3718                         interval = suspend_time;
3719                 /*
3720                  * suspend time format:
3721                  *  0-19: beacon interval in usec (time before exec.)
3722                  * 20-23: 0
3723                  * 24-31: number of beacons (suspend between channels)
3724                  */
3725
3726                 extra = (suspend_time / interval) << 24;
3727                 scan_suspend_time = 0xFF0FFFFF &
3728                     (extra | ((suspend_time % interval) * 1024));
3729
3730                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3731                 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3732                                scan_suspend_time, interval);
3733         }
3734
3735         /* We should add the ability for user to lock to PASSIVE ONLY */
3736         if (priv->one_direct_scan) {
3737                 IWL_DEBUG_SCAN(priv, "Kicking off one direct scan for '%s'\n",
3738                                 print_ssid(ssid, priv->direct_ssid,
3739                                 priv->direct_ssid_len));
3740                 scan->direct_scan[0].id = WLAN_EID_SSID;
3741                 scan->direct_scan[0].len = priv->direct_ssid_len;
3742                 memcpy(scan->direct_scan[0].ssid,
3743                        priv->direct_ssid, priv->direct_ssid_len);
3744                 n_probes++;
3745         } else
3746                 IWL_DEBUG_SCAN(priv, "Kicking off one indirect scan.\n");
3747
3748         /* We don't build a direct scan probe request; the uCode will do
3749          * that based on the direct_mask added to each channel entry */
3750         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3751         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3752         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3753
3754         /* flags + rate selection */
3755
3756         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3757                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3758                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3759                 scan->good_CRC_th = 0;
3760                 band = IEEE80211_BAND_2GHZ;
3761         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3762                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3763                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3764                 band = IEEE80211_BAND_5GHZ;
3765         } else {
3766                 IWL_WARN(priv, "Invalid scan band count\n");
3767                 goto done;
3768         }
3769
3770         scan->tx_cmd.len = cpu_to_le16(
3771                 iwl_fill_probe_req(priv, band,
3772                                    (struct ieee80211_mgmt *)scan->data,
3773                                    IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3774
3775         /* select Rx antennas */
3776         scan->flags |= iwl3945_get_antenna_flags(priv);
3777
3778         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
3779                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3780
3781         scan->channel_count =
3782                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
3783                                               n_probes,
3784                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3785
3786         if (scan->channel_count == 0) {
3787                 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3788                 goto done;
3789         }
3790
3791         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3792             scan->channel_count * sizeof(struct iwl3945_scan_channel);
3793         cmd.data = scan;
3794         scan->len = cpu_to_le16(cmd.len);
3795
3796         set_bit(STATUS_SCAN_HW, &priv->status);
3797         rc = iwl_send_cmd_sync(priv, &cmd);
3798         if (rc)
3799                 goto done;
3800
3801         queue_delayed_work(priv->workqueue, &priv->scan_check,
3802                            IWL_SCAN_CHECK_WATCHDOG);
3803
3804         mutex_unlock(&priv->mutex);
3805         return;
3806
3807  done:
3808         /* can not perform scan make sure we clear scanning
3809          * bits from status so next scan request can be performed.
3810          * if we dont clear scanning status bit here all next scan
3811          * will fail
3812         */
3813         clear_bit(STATUS_SCAN_HW, &priv->status);
3814         clear_bit(STATUS_SCANNING, &priv->status);
3815
3816         /* inform mac80211 scan aborted */
3817         queue_work(priv->workqueue, &priv->scan_completed);
3818         mutex_unlock(&priv->mutex);
3819 }
3820
3821 static void iwl3945_bg_up(struct work_struct *data)
3822 {
3823         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3824
3825         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3826                 return;
3827
3828         mutex_lock(&priv->mutex);
3829         __iwl3945_up(priv);
3830         mutex_unlock(&priv->mutex);
3831         iwl_rfkill_set_hw_state(priv);
3832 }
3833
3834 static void iwl3945_bg_restart(struct work_struct *data)
3835 {
3836         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3837
3838         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3839                 return;
3840
3841         iwl3945_down(priv);
3842         queue_work(priv->workqueue, &priv->up);
3843 }
3844
3845 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3846 {
3847         struct iwl_priv *priv =
3848             container_of(data, struct iwl_priv, rx_replenish);
3849
3850         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3851                 return;
3852
3853         mutex_lock(&priv->mutex);
3854         iwl3945_rx_replenish(priv);
3855         mutex_unlock(&priv->mutex);
3856 }
3857
3858 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3859
3860 static void iwl3945_post_associate(struct iwl_priv *priv)
3861 {
3862         int rc = 0;
3863         struct ieee80211_conf *conf = NULL;
3864
3865         if (priv->iw_mode == NL80211_IFTYPE_AP) {
3866                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3867                 return;
3868         }
3869
3870
3871         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3872                         priv->assoc_id, priv->active_rxon.bssid_addr);
3873
3874         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3875                 return;
3876
3877         if (!priv->vif || !priv->is_open)
3878                 return;
3879
3880         iwl_scan_cancel_timeout(priv, 200);
3881
3882         conf = ieee80211_get_hw_conf(priv->hw);
3883
3884         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3885         iwl3945_commit_rxon(priv);
3886
3887         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3888         iwl3945_setup_rxon_timing(priv);
3889         rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3890                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3891         if (rc)
3892                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3893                             "Attempting to continue.\n");
3894
3895         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3896
3897         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3898
3899         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3900                         priv->assoc_id, priv->beacon_int);
3901
3902         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3903                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3904         else
3905                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3906
3907         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3908                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3909                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3910                 else
3911                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3912
3913                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3914                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3915
3916         }
3917
3918         iwl3945_commit_rxon(priv);
3919
3920         switch (priv->iw_mode) {
3921         case NL80211_IFTYPE_STATION:
3922                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3923                 break;
3924
3925         case NL80211_IFTYPE_ADHOC:
3926
3927                 priv->assoc_id = 1;
3928                 iwl3945_add_station(priv, priv->bssid, 0, 0);
3929                 iwl3945_sync_sta(priv, IWL_STA_ID,
3930                                  (priv->band == IEEE80211_BAND_5GHZ) ?
3931                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3932                                  CMD_ASYNC);
3933                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3934                 iwl3945_send_beacon_cmd(priv);
3935
3936                 break;
3937
3938         default:
3939                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
3940                            __func__, priv->iw_mode);
3941                 break;
3942         }
3943
3944         iwl3945_activate_qos(priv, 0);
3945
3946         /* we have just associated, don't start scan too early */
3947         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3948 }
3949
3950 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
3951
3952 /*****************************************************************************
3953  *
3954  * mac80211 entry point functions
3955  *
3956  *****************************************************************************/
3957
3958 #define UCODE_READY_TIMEOUT     (2 * HZ)
3959
3960 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3961 {
3962         struct iwl_priv *priv = hw->priv;
3963         int ret;
3964
3965         IWL_DEBUG_MAC80211(priv, "enter\n");
3966
3967         /* we should be verifying the device is ready to be opened */
3968         mutex_lock(&priv->mutex);
3969
3970         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3971         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3972          * ucode filename and max sizes are card-specific. */
3973
3974         if (!priv->ucode_code.len) {
3975                 ret = iwl3945_read_ucode(priv);
3976                 if (ret) {
3977                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3978                         mutex_unlock(&priv->mutex);
3979                         goto out_release_irq;
3980                 }
3981         }
3982
3983         ret = __iwl3945_up(priv);
3984
3985         mutex_unlock(&priv->mutex);
3986
3987         iwl_rfkill_set_hw_state(priv);
3988
3989         if (ret)
3990                 goto out_release_irq;
3991
3992         IWL_DEBUG_INFO(priv, "Start UP work.\n");
3993
3994         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3995                 return 0;
3996
3997         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3998          * mac80211 will not be run successfully. */
3999         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4000                         test_bit(STATUS_READY, &priv->status),
4001                         UCODE_READY_TIMEOUT);
4002         if (!ret) {
4003                 if (!test_bit(STATUS_READY, &priv->status)) {
4004                         IWL_ERR(priv,
4005                                 "Wait for START_ALIVE timeout after %dms.\n",
4006                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
4007                         ret = -ETIMEDOUT;
4008                         goto out_release_irq;
4009                 }
4010         }
4011
4012         /* ucode is running and will send rfkill notifications,
4013          * no need to poll the killswitch state anymore */
4014         cancel_delayed_work(&priv->rfkill_poll);
4015
4016         priv->is_open = 1;
4017         IWL_DEBUG_MAC80211(priv, "leave\n");
4018         return 0;
4019
4020 out_release_irq:
4021         priv->is_open = 0;
4022         IWL_DEBUG_MAC80211(priv, "leave - failed\n");
4023         return ret;
4024 }
4025
4026 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
4027 {
4028         struct iwl_priv *priv = hw->priv;
4029
4030         IWL_DEBUG_MAC80211(priv, "enter\n");
4031
4032         if (!priv->is_open) {
4033                 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
4034                 return;
4035         }
4036
4037         priv->is_open = 0;
4038
4039         if (iwl_is_ready_rf(priv)) {
4040                 /* stop mac, cancel any scan request and clear
4041                  * RXON_FILTER_ASSOC_MSK BIT
4042                  */
4043                 mutex_lock(&priv->mutex);
4044                 iwl_scan_cancel_timeout(priv, 100);
4045                 mutex_unlock(&priv->mutex);
4046         }
4047
4048         iwl3945_down(priv);
4049
4050         flush_workqueue(priv->workqueue);
4051
4052         /* start polling the killswitch state again */
4053         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4054                            round_jiffies_relative(2 * HZ));
4055
4056         IWL_DEBUG_MAC80211(priv, "leave\n");
4057 }
4058
4059 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4060 {
4061         struct iwl_priv *priv = hw->priv;
4062
4063         IWL_DEBUG_MAC80211(priv, "enter\n");
4064
4065         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4066                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
4067
4068         if (iwl3945_tx_skb(priv, skb))
4069                 dev_kfree_skb_any(skb);
4070
4071         IWL_DEBUG_MAC80211(priv, "leave\n");
4072         return NETDEV_TX_OK;
4073 }
4074
4075 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
4076                                  struct ieee80211_if_init_conf *conf)
4077 {
4078         struct iwl_priv *priv = hw->priv;
4079         unsigned long flags;
4080
4081         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
4082
4083         if (priv->vif) {
4084                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
4085                 return -EOPNOTSUPP;
4086         }
4087
4088         spin_lock_irqsave(&priv->lock, flags);
4089         priv->vif = conf->vif;
4090         priv->iw_mode = conf->type;
4091
4092         spin_unlock_irqrestore(&priv->lock, flags);
4093
4094         mutex_lock(&priv->mutex);
4095
4096         if (conf->mac_addr) {
4097                 IWL_DEBUG_MAC80211(priv, "Set: %pM\n", conf->mac_addr);
4098                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4099         }
4100
4101         if (iwl_is_ready(priv))
4102                 iwl3945_set_mode(priv, conf->type);
4103
4104         mutex_unlock(&priv->mutex);
4105
4106         IWL_DEBUG_MAC80211(priv, "leave\n");
4107         return 0;
4108 }
4109
4110 /**
4111  * iwl3945_mac_config - mac80211 config callback
4112  *
4113  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4114  * be set inappropriately and the driver currently sets the hardware up to
4115  * use it whenever needed.
4116  */
4117 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
4118 {
4119         struct iwl_priv *priv = hw->priv;
4120         const struct iwl_channel_info *ch_info;
4121         struct ieee80211_conf *conf = &hw->conf;
4122         unsigned long flags;
4123         int ret = 0;
4124
4125         mutex_lock(&priv->mutex);
4126         IWL_DEBUG_MAC80211(priv, "enter to channel %d\n",
4127                                 conf->channel->hw_value);
4128
4129         if (!iwl_is_ready(priv)) {
4130                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
4131                 ret = -EIO;
4132                 goto out;
4133         }
4134
4135         if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
4136                      test_bit(STATUS_SCANNING, &priv->status))) {
4137                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
4138                 set_bit(STATUS_CONF_PENDING, &priv->status);
4139                 mutex_unlock(&priv->mutex);
4140                 return 0;
4141         }
4142
4143         spin_lock_irqsave(&priv->lock, flags);
4144
4145         ch_info = iwl_get_channel_info(priv, conf->channel->band,
4146                                        conf->channel->hw_value);
4147         if (!is_channel_valid(ch_info)) {
4148                 IWL_DEBUG_SCAN(priv,
4149                                 "Channel %d [%d] is INVALID for this band.\n",
4150                                 conf->channel->hw_value, conf->channel->band);
4151                 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
4152                 spin_unlock_irqrestore(&priv->lock, flags);
4153                 ret = -EINVAL;
4154                 goto out;
4155         }
4156
4157         iwl_set_rxon_channel(priv, conf->channel);
4158
4159         iwl_set_flags_for_band(priv, conf->channel->band);
4160
4161         /* The list of supported rates and rate mask can be different
4162          * for each phymode; since the phymode may have changed, reset
4163          * the rate mask to what mac80211 lists */
4164         iwl_set_rate(priv);
4165
4166         spin_unlock_irqrestore(&priv->lock, flags);
4167
4168 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4169         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4170                 iwl3945_hw_channel_switch(priv, conf->channel);
4171                 goto out;
4172         }
4173 #endif
4174
4175         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
4176
4177         if (!conf->radio_enabled) {
4178                 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
4179                 goto out;
4180         }
4181
4182         if (iwl_is_rfkill(priv)) {
4183                 IWL_DEBUG_MAC80211(priv, "leave - RF kill\n");
4184                 ret = -EIO;
4185                 goto out;
4186         }
4187
4188         iwl_set_rate(priv);
4189
4190         if (memcmp(&priv->active_rxon,
4191                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
4192                 iwl3945_commit_rxon(priv);
4193         else
4194                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration\n");
4195
4196         IWL_DEBUG_MAC80211(priv, "leave\n");
4197
4198 out:
4199         clear_bit(STATUS_CONF_PENDING, &priv->status);
4200         mutex_unlock(&priv->mutex);
4201         return ret;
4202 }
4203
4204 static void iwl3945_config_ap(struct iwl_priv *priv)
4205 {
4206         int rc = 0;
4207
4208         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4209                 return;
4210
4211         /* The following should be done only at AP bring up */
4212         if (!(iwl_is_associated(priv))) {
4213
4214                 /* RXON - unassoc (to set timing command) */
4215                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4216                 iwl3945_commit_rxon(priv);
4217
4218                 /* RXON Timing */
4219                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
4220                 iwl3945_setup_rxon_timing(priv);
4221                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4222                                       sizeof(priv->rxon_timing),
4223                                       &priv->rxon_timing);
4224                 if (rc)
4225                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
4226                                         "Attempting to continue.\n");
4227
4228                 /* FIXME: what should be the assoc_id for AP? */
4229                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4230                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4231                         priv->staging_rxon.flags |=
4232                                 RXON_FLG_SHORT_PREAMBLE_MSK;
4233                 else
4234                         priv->staging_rxon.flags &=
4235                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4236
4237                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4238                         if (priv->assoc_capability &
4239                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4240                                 priv->staging_rxon.flags |=
4241                                         RXON_FLG_SHORT_SLOT_MSK;
4242                         else
4243                                 priv->staging_rxon.flags &=
4244                                         ~RXON_FLG_SHORT_SLOT_MSK;
4245
4246                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
4247                                 priv->staging_rxon.flags &=
4248                                         ~RXON_FLG_SHORT_SLOT_MSK;
4249                 }
4250                 /* restore RXON assoc */
4251                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4252                 iwl3945_commit_rxon(priv);
4253                 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
4254         }
4255         iwl3945_send_beacon_cmd(priv);
4256
4257         /* FIXME - we need to add code here to detect a totally new
4258          * configuration, reset the AP, unassoc, rxon timing, assoc,
4259          * clear sta table, add BCAST sta... */
4260 }
4261
4262 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
4263                                         struct ieee80211_vif *vif,
4264                                         struct ieee80211_if_conf *conf)
4265 {
4266         struct iwl_priv *priv = hw->priv;
4267         int rc;
4268
4269         if (conf == NULL)
4270                 return -EIO;
4271
4272         if (priv->vif != vif) {
4273                 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
4274                 return 0;
4275         }
4276
4277         /* handle this temporarily here */
4278         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
4279             conf->changed & IEEE80211_IFCC_BEACON) {
4280                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
4281                 if (!beacon)
4282                         return -ENOMEM;
4283                 mutex_lock(&priv->mutex);
4284                 rc = iwl3945_mac_beacon_update(hw, beacon);
4285                 mutex_unlock(&priv->mutex);
4286                 if (rc)
4287                         return rc;
4288         }
4289
4290         if (!iwl_is_alive(priv))
4291                 return -EAGAIN;
4292
4293         mutex_lock(&priv->mutex);
4294
4295         if (conf->bssid)
4296                 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
4297
4298 /*
4299  * very dubious code was here; the probe filtering flag is never set:
4300  *
4301         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4302             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4303  */
4304
4305         if (priv->iw_mode == NL80211_IFTYPE_AP) {
4306                 if (!conf->bssid) {
4307                         conf->bssid = priv->mac_addr;
4308                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4309                         IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
4310                                            conf->bssid);
4311                 }
4312                 if (priv->ibss_beacon)
4313                         dev_kfree_skb(priv->ibss_beacon);
4314
4315                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
4316         }
4317
4318         if (iwl_is_rfkill(priv))
4319                 goto done;
4320
4321         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4322             !is_multicast_ether_addr(conf->bssid)) {
4323                 /* If there is currently a HW scan going on in the background
4324                  * then we need to cancel it else the RXON below will fail. */
4325                 if (iwl_scan_cancel_timeout(priv, 100)) {
4326                         IWL_WARN(priv, "Aborted scan still in progress "
4327                                     "after 100ms\n");
4328                         IWL_DEBUG_MAC80211(priv, "leaving:scan abort failed\n");
4329                         mutex_unlock(&priv->mutex);
4330                         return -EAGAIN;
4331                 }
4332                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4333
4334                 /* TODO: Audit driver for usage of these members and see
4335                  * if mac80211 deprecates them (priv->bssid looks like it
4336                  * shouldn't be there, but I haven't scanned the IBSS code
4337                  * to verify) - jpk */
4338                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4339
4340                 if (priv->iw_mode == NL80211_IFTYPE_AP)
4341                         iwl3945_config_ap(priv);
4342                 else {
4343                         rc = iwl3945_commit_rxon(priv);
4344                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
4345                                 iwl3945_add_station(priv,
4346                                         priv->active_rxon.bssid_addr, 1, 0);
4347                 }
4348
4349         } else {
4350                 iwl_scan_cancel_timeout(priv, 100);
4351                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4352                 iwl3945_commit_rxon(priv);
4353         }
4354
4355  done:
4356         IWL_DEBUG_MAC80211(priv, "leave\n");
4357         mutex_unlock(&priv->mutex);
4358
4359         return 0;
4360 }
4361
4362 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
4363                                      struct ieee80211_if_init_conf *conf)
4364 {
4365         struct iwl_priv *priv = hw->priv;
4366
4367         IWL_DEBUG_MAC80211(priv, "enter\n");
4368
4369         mutex_lock(&priv->mutex);
4370
4371         if (iwl_is_ready_rf(priv)) {
4372                 iwl_scan_cancel_timeout(priv, 100);
4373                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4374                 iwl3945_commit_rxon(priv);
4375         }
4376         if (priv->vif == conf->vif) {
4377                 priv->vif = NULL;
4378                 memset(priv->bssid, 0, ETH_ALEN);
4379         }
4380         mutex_unlock(&priv->mutex);
4381
4382         IWL_DEBUG_MAC80211(priv, "leave\n");
4383 }
4384
4385 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4386
4387 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
4388                                      struct ieee80211_vif *vif,
4389                                      struct ieee80211_bss_conf *bss_conf,
4390                                      u32 changes)
4391 {
4392         struct iwl_priv *priv = hw->priv;
4393
4394         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
4395
4396         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4397                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
4398                                    bss_conf->use_short_preamble);
4399                 if (bss_conf->use_short_preamble)
4400                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4401                 else
4402                         priv->staging_rxon.flags &=
4403                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4404         }
4405
4406         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4407                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n",
4408                                    bss_conf->use_cts_prot);
4409                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4410                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4411                 else
4412                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4413         }
4414
4415         if (changes & BSS_CHANGED_ASSOC) {
4416                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
4417                 /* This should never happen as this function should
4418                  * never be called from interrupt context. */
4419                 if (WARN_ON_ONCE(in_interrupt()))
4420                         return;
4421                 if (bss_conf->assoc) {
4422                         priv->assoc_id = bss_conf->aid;
4423                         priv->beacon_int = bss_conf->beacon_int;
4424                         priv->timestamp = bss_conf->timestamp;
4425                         priv->assoc_capability = bss_conf->assoc_capability;
4426                         priv->power_data.dtim_period = bss_conf->dtim_period;
4427                         priv->next_scan_jiffies = jiffies +
4428                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4429                         mutex_lock(&priv->mutex);
4430                         iwl3945_post_associate(priv);
4431                         mutex_unlock(&priv->mutex);
4432                 } else {
4433                         priv->assoc_id = 0;
4434                         IWL_DEBUG_MAC80211(priv,
4435                                         "DISASSOC %d\n", bss_conf->assoc);
4436                 }
4437         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4438                         IWL_DEBUG_MAC80211(priv,
4439                                         "Associated Changes %d\n", changes);
4440                         iwl3945_send_rxon_assoc(priv);
4441         }
4442
4443 }
4444
4445 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4446 {
4447         int rc = 0;
4448         unsigned long flags;
4449         struct iwl_priv *priv = hw->priv;
4450         DECLARE_SSID_BUF(ssid_buf);
4451
4452         IWL_DEBUG_MAC80211(priv, "enter\n");
4453
4454         mutex_lock(&priv->mutex);
4455         spin_lock_irqsave(&priv->lock, flags);
4456
4457         if (!iwl_is_ready_rf(priv)) {
4458                 rc = -EIO;
4459                 IWL_DEBUG_MAC80211(priv, "leave - not ready or exit pending\n");
4460                 goto out_unlock;
4461         }
4462
4463         /* we don't schedule scan within next_scan_jiffies period */
4464         if (priv->next_scan_jiffies &&
4465                         time_after(priv->next_scan_jiffies, jiffies)) {
4466                 rc = -EAGAIN;
4467                 goto out_unlock;
4468         }
4469         /* if we just finished scan ask for delay for a broadcast scan */
4470         if ((len == 0) && priv->last_scan_jiffies &&
4471             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
4472                        jiffies)) {
4473                 rc = -EAGAIN;
4474                 goto out_unlock;
4475         }
4476         if (len) {
4477                 IWL_DEBUG_SCAN(priv, "direct scan for %s [%zd]\n ",
4478                                print_ssid(ssid_buf, ssid, len), len);
4479
4480                 priv->one_direct_scan = 1;
4481                 priv->direct_ssid_len = (u8)
4482                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4483                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4484         } else
4485                 priv->one_direct_scan = 0;
4486
4487         rc = iwl3945_scan_initiate(priv);
4488
4489         IWL_DEBUG_MAC80211(priv, "leave\n");
4490
4491 out_unlock:
4492         spin_unlock_irqrestore(&priv->lock, flags);
4493         mutex_unlock(&priv->mutex);
4494
4495         return rc;
4496 }
4497
4498 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4499                                struct ieee80211_vif *vif,
4500                                struct ieee80211_sta *sta,
4501                                struct ieee80211_key_conf *key)
4502 {
4503         struct iwl_priv *priv = hw->priv;
4504         const u8 *addr;
4505         int ret;
4506         u8 sta_id;
4507
4508         IWL_DEBUG_MAC80211(priv, "enter\n");
4509
4510         if (iwl3945_mod_params.sw_crypto) {
4511                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
4512                 return -EOPNOTSUPP;
4513         }
4514
4515         addr = sta ? sta->addr : iwl_bcast_addr;
4516         sta_id = iwl3945_hw_find_station(priv, addr);
4517         if (sta_id == IWL_INVALID_STATION) {
4518                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
4519                                    addr);
4520                 return -EINVAL;
4521         }
4522
4523         mutex_lock(&priv->mutex);
4524
4525         iwl_scan_cancel_timeout(priv, 100);
4526
4527         switch (cmd) {
4528         case  SET_KEY:
4529                 ret = iwl3945_update_sta_key_info(priv, key, sta_id);
4530                 if (!ret) {
4531                         iwl_set_rxon_hwcrypto(priv, 1);
4532                         iwl3945_commit_rxon(priv);
4533                         key->hw_key_idx = sta_id;
4534                         IWL_DEBUG_MAC80211(priv,
4535                                 "set_key success, using hwcrypto\n");
4536                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4537                 }
4538                 break;
4539         case DISABLE_KEY:
4540                 ret = iwl3945_clear_sta_key_info(priv, sta_id);
4541                 if (!ret) {
4542                         iwl_set_rxon_hwcrypto(priv, 0);
4543                         iwl3945_commit_rxon(priv);
4544                         IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
4545                 }
4546                 break;
4547         default:
4548                 ret = -EINVAL;
4549         }
4550
4551         IWL_DEBUG_MAC80211(priv, "leave\n");
4552         mutex_unlock(&priv->mutex);
4553
4554         return ret;
4555 }
4556
4557 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4558                            const struct ieee80211_tx_queue_params *params)
4559 {
4560         struct iwl_priv *priv = hw->priv;
4561         unsigned long flags;
4562         int q;
4563
4564         IWL_DEBUG_MAC80211(priv, "enter\n");
4565
4566         if (!iwl_is_ready_rf(priv)) {
4567                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4568                 return -EIO;
4569         }
4570
4571         if (queue >= AC_NUM) {
4572                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
4573                 return 0;
4574         }
4575
4576         q = AC_NUM - 1 - queue;
4577
4578         spin_lock_irqsave(&priv->lock, flags);
4579
4580         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4581         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4582         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4583         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4584                         cpu_to_le16((params->txop * 32));
4585
4586         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4587         priv->qos_data.qos_active = 1;
4588
4589         spin_unlock_irqrestore(&priv->lock, flags);
4590
4591         mutex_lock(&priv->mutex);
4592         if (priv->iw_mode == NL80211_IFTYPE_AP)
4593                 iwl3945_activate_qos(priv, 1);
4594         else if (priv->assoc_id && iwl_is_associated(priv))
4595                 iwl3945_activate_qos(priv, 0);
4596
4597         mutex_unlock(&priv->mutex);
4598
4599         IWL_DEBUG_MAC80211(priv, "leave\n");
4600         return 0;
4601 }
4602
4603 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
4604                                 struct ieee80211_tx_queue_stats *stats)
4605 {
4606         struct iwl_priv *priv = hw->priv;
4607         int i, avail;
4608         struct iwl_tx_queue *txq;
4609         struct iwl_queue *q;
4610         unsigned long flags;
4611
4612         IWL_DEBUG_MAC80211(priv, "enter\n");
4613
4614         if (!iwl_is_ready_rf(priv)) {
4615                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4616                 return -EIO;
4617         }
4618
4619         spin_lock_irqsave(&priv->lock, flags);
4620
4621         for (i = 0; i < AC_NUM; i++) {
4622                 txq = &priv->txq[i];
4623                 q = &txq->q;
4624                 avail = iwl_queue_space(q);
4625
4626                 stats[i].len = q->n_window - avail;
4627                 stats[i].limit = q->n_window - q->high_mark;
4628                 stats[i].count = q->n_window;
4629
4630         }
4631         spin_unlock_irqrestore(&priv->lock, flags);
4632
4633         IWL_DEBUG_MAC80211(priv, "leave\n");
4634
4635         return 0;
4636 }
4637
4638 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
4639 {
4640         struct iwl_priv *priv = hw->priv;
4641         unsigned long flags;
4642
4643         mutex_lock(&priv->mutex);
4644         IWL_DEBUG_MAC80211(priv, "enter\n");
4645
4646         iwl_reset_qos(priv);
4647
4648         spin_lock_irqsave(&priv->lock, flags);
4649         priv->assoc_id = 0;
4650         priv->assoc_capability = 0;
4651
4652         /* new association get rid of ibss beacon skb */
4653         if (priv->ibss_beacon)
4654                 dev_kfree_skb(priv->ibss_beacon);
4655
4656         priv->ibss_beacon = NULL;
4657
4658         priv->beacon_int = priv->hw->conf.beacon_int;
4659         priv->timestamp = 0;
4660         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
4661                 priv->beacon_int = 0;
4662
4663         spin_unlock_irqrestore(&priv->lock, flags);
4664
4665         if (!iwl_is_ready_rf(priv)) {
4666                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
4667                 mutex_unlock(&priv->mutex);
4668                 return;
4669         }
4670
4671         /* we are restarting association process
4672          * clear RXON_FILTER_ASSOC_MSK bit
4673         */
4674         if (priv->iw_mode != NL80211_IFTYPE_AP) {
4675                 iwl_scan_cancel_timeout(priv, 100);
4676                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4677                 iwl3945_commit_rxon(priv);
4678         }
4679
4680         /* Per mac80211.h: This is only used in IBSS mode... */
4681         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4682
4683                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
4684                 mutex_unlock(&priv->mutex);
4685                 return;
4686         }
4687
4688         iwl_set_rate(priv);
4689
4690         mutex_unlock(&priv->mutex);
4691
4692         IWL_DEBUG_MAC80211(priv, "leave\n");
4693
4694 }
4695
4696 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4697 {
4698         struct iwl_priv *priv = hw->priv;
4699         unsigned long flags;
4700
4701         IWL_DEBUG_MAC80211(priv, "enter\n");
4702
4703         if (!iwl_is_ready_rf(priv)) {
4704                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4705                 return -EIO;
4706         }
4707
4708         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4709                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
4710                 return -EIO;
4711         }
4712
4713         spin_lock_irqsave(&priv->lock, flags);
4714
4715         if (priv->ibss_beacon)
4716                 dev_kfree_skb(priv->ibss_beacon);
4717
4718         priv->ibss_beacon = skb;
4719
4720         priv->assoc_id = 0;
4721
4722         IWL_DEBUG_MAC80211(priv, "leave\n");
4723         spin_unlock_irqrestore(&priv->lock, flags);
4724
4725         iwl_reset_qos(priv);
4726
4727         iwl3945_post_associate(priv);
4728
4729
4730         return 0;
4731 }
4732
4733 /*****************************************************************************
4734  *
4735  * sysfs attributes
4736  *
4737  *****************************************************************************/
4738
4739 #ifdef CONFIG_IWLWIFI_DEBUG
4740
4741 /*
4742  * The following adds a new attribute to the sysfs representation
4743  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4744  * used for controlling the debug level.
4745  *
4746  * See the level definitions in iwl for details.
4747  */
4748 static ssize_t show_debug_level(struct device *d,
4749                                 struct device_attribute *attr, char *buf)
4750 {
4751         struct iwl_priv *priv = d->driver_data;
4752
4753         return sprintf(buf, "0x%08X\n", priv->debug_level);
4754 }
4755 static ssize_t store_debug_level(struct device *d,
4756                                 struct device_attribute *attr,
4757                                  const char *buf, size_t count)
4758 {
4759         struct iwl_priv *priv = d->driver_data;
4760         unsigned long val;
4761         int ret;
4762
4763         ret = strict_strtoul(buf, 0, &val);
4764         if (ret)
4765                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
4766         else
4767                 priv->debug_level = val;
4768
4769         return strnlen(buf, count);
4770 }
4771
4772 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4773                         show_debug_level, store_debug_level);
4774
4775 #endif /* CONFIG_IWLWIFI_DEBUG */
4776
4777 static ssize_t show_temperature(struct device *d,
4778                                 struct device_attribute *attr, char *buf)
4779 {
4780         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4781
4782         if (!iwl_is_alive(priv))
4783                 return -EAGAIN;
4784
4785         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
4786 }
4787
4788 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4789
4790 static ssize_t show_tx_power(struct device *d,
4791                              struct device_attribute *attr, char *buf)
4792 {
4793         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4794         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
4795 }
4796
4797 static ssize_t store_tx_power(struct device *d,
4798                               struct device_attribute *attr,
4799                               const char *buf, size_t count)
4800 {
4801         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4802         char *p = (char *)buf;
4803         u32 val;
4804
4805         val = simple_strtoul(p, &p, 10);
4806         if (p == buf)
4807                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
4808         else
4809                 iwl3945_hw_reg_set_txpower(priv, val);
4810
4811         return count;
4812 }
4813
4814 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4815
4816 static ssize_t show_flags(struct device *d,
4817                           struct device_attribute *attr, char *buf)
4818 {
4819         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4820
4821         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4822 }
4823
4824 static ssize_t store_flags(struct device *d,
4825                            struct device_attribute *attr,
4826                            const char *buf, size_t count)
4827 {
4828         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4829         u32 flags = simple_strtoul(buf, NULL, 0);
4830
4831         mutex_lock(&priv->mutex);
4832         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4833                 /* Cancel any currently running scans... */
4834                 if (iwl_scan_cancel_timeout(priv, 100))
4835                         IWL_WARN(priv, "Could not cancel scan.\n");
4836                 else {
4837                         IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
4838                                        flags);
4839                         priv->staging_rxon.flags = cpu_to_le32(flags);
4840                         iwl3945_commit_rxon(priv);
4841                 }
4842         }
4843         mutex_unlock(&priv->mutex);
4844
4845         return count;
4846 }
4847
4848 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4849
4850 static ssize_t show_filter_flags(struct device *d,
4851                                  struct device_attribute *attr, char *buf)
4852 {
4853         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4854
4855         return sprintf(buf, "0x%04X\n",
4856                 le32_to_cpu(priv->active_rxon.filter_flags));
4857 }
4858
4859 static ssize_t store_filter_flags(struct device *d,
4860                                   struct device_attribute *attr,
4861                                   const char *buf, size_t count)
4862 {
4863         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4864         u32 filter_flags = simple_strtoul(buf, NULL, 0);
4865
4866         mutex_lock(&priv->mutex);
4867         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4868                 /* Cancel any currently running scans... */
4869                 if (iwl_scan_cancel_timeout(priv, 100))
4870                         IWL_WARN(priv, "Could not cancel scan.\n");
4871                 else {
4872                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
4873                                        "0x%04X\n", filter_flags);
4874                         priv->staging_rxon.filter_flags =
4875                                 cpu_to_le32(filter_flags);
4876                         iwl3945_commit_rxon(priv);
4877                 }
4878         }
4879         mutex_unlock(&priv->mutex);
4880
4881         return count;
4882 }
4883
4884 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4885                    store_filter_flags);
4886
4887 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4888
4889 static ssize_t show_measurement(struct device *d,
4890                                 struct device_attribute *attr, char *buf)
4891 {
4892         struct iwl_priv *priv = dev_get_drvdata(d);
4893         struct iwl_spectrum_notification measure_report;
4894         u32 size = sizeof(measure_report), len = 0, ofs = 0;
4895         u8 *data = (u8 *)&measure_report;
4896         unsigned long flags;
4897
4898         spin_lock_irqsave(&priv->lock, flags);
4899         if (!(priv->measurement_status & MEASUREMENT_READY)) {
4900                 spin_unlock_irqrestore(&priv->lock, flags);
4901                 return 0;
4902         }
4903         memcpy(&measure_report, &priv->measure_report, size);
4904         priv->measurement_status = 0;
4905         spin_unlock_irqrestore(&priv->lock, flags);
4906
4907         while (size && (PAGE_SIZE - len)) {
4908                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4909                                    PAGE_SIZE - len, 1);
4910                 len = strlen(buf);
4911                 if (PAGE_SIZE - len)
4912                         buf[len++] = '\n';
4913
4914                 ofs += 16;
4915                 size -= min(size, 16U);
4916         }
4917
4918         return len;
4919 }
4920
4921 static ssize_t store_measurement(struct device *d,
4922                                  struct device_attribute *attr,
4923                                  const char *buf, size_t count)
4924 {
4925         struct iwl_priv *priv = dev_get_drvdata(d);
4926         struct ieee80211_measurement_params params = {
4927                 .channel = le16_to_cpu(priv->active_rxon.channel),
4928                 .start_time = cpu_to_le64(priv->last_tsf),
4929                 .duration = cpu_to_le16(1),
4930         };
4931         u8 type = IWL_MEASURE_BASIC;
4932         u8 buffer[32];
4933         u8 channel;
4934
4935         if (count) {
4936                 char *p = buffer;
4937                 strncpy(buffer, buf, min(sizeof(buffer), count));
4938                 channel = simple_strtoul(p, NULL, 0);
4939                 if (channel)
4940                         params.channel = channel;
4941
4942                 p = buffer;
4943                 while (*p && *p != ' ')
4944                         p++;
4945                 if (*p)
4946                         type = simple_strtoul(p + 1, NULL, 0);
4947         }
4948
4949         IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
4950                        "channel %d (for '%s')\n", type, params.channel, buf);
4951         iwl3945_get_measurement(priv, &params, type);
4952
4953         return count;
4954 }
4955
4956 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4957                    show_measurement, store_measurement);
4958 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
4959
4960 static ssize_t store_retry_rate(struct device *d,
4961                                 struct device_attribute *attr,
4962                                 const char *buf, size_t count)
4963 {
4964         struct iwl_priv *priv = dev_get_drvdata(d);
4965
4966         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4967         if (priv->retry_rate <= 0)
4968                 priv->retry_rate = 1;
4969
4970         return count;
4971 }
4972
4973 static ssize_t show_retry_rate(struct device *d,
4974                                struct device_attribute *attr, char *buf)
4975 {
4976         struct iwl_priv *priv = dev_get_drvdata(d);
4977         return sprintf(buf, "%d", priv->retry_rate);
4978 }
4979
4980 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4981                    store_retry_rate);
4982
4983
4984 static ssize_t store_power_level(struct device *d,
4985                                  struct device_attribute *attr,
4986                                  const char *buf, size_t count)
4987 {
4988         struct iwl_priv *priv = dev_get_drvdata(d);
4989         int ret;
4990         unsigned long mode;
4991
4992
4993         mutex_lock(&priv->mutex);
4994
4995         if (!iwl_is_ready(priv)) {
4996                 ret = -EAGAIN;
4997                 goto out;
4998         }
4999
5000         ret = strict_strtoul(buf, 10, &mode);
5001         if (ret)
5002                 goto out;
5003
5004         ret = iwl_power_set_user_mode(priv, mode);
5005         if (ret) {
5006                 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
5007                 goto out;
5008         }
5009         ret = count;
5010
5011  out:
5012         mutex_unlock(&priv->mutex);
5013         return ret;
5014 }
5015
5016 static ssize_t show_power_level(struct device *d,
5017                                 struct device_attribute *attr, char *buf)
5018 {
5019         struct iwl_priv *priv = dev_get_drvdata(d);
5020         int mode = priv->power_data.user_power_setting;
5021         int system = priv->power_data.system_power_setting;
5022         int level = priv->power_data.power_mode;
5023         char *p = buf;
5024
5025         switch (system) {
5026         case IWL_POWER_SYS_AUTO:
5027                 p += sprintf(p, "SYSTEM:auto");
5028                 break;
5029         case IWL_POWER_SYS_AC:
5030                 p += sprintf(p, "SYSTEM:ac");
5031                 break;
5032         case IWL_POWER_SYS_BATTERY:
5033                 p += sprintf(p, "SYSTEM:battery");
5034                 break;
5035         }
5036
5037         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
5038                         "fixed" : "auto");
5039         p += sprintf(p, "\tINDEX:%d", level);
5040         p += sprintf(p, "\n");
5041         return p - buf + 1;
5042 }
5043
5044 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
5045                    show_power_level, store_power_level);
5046
5047 #define MAX_WX_STRING 80
5048
5049 /* Values are in microsecond */
5050 static const s32 timeout_duration[] = {
5051         350000,
5052         250000,
5053         75000,
5054         37000,
5055         25000,
5056 };
5057 static const s32 period_duration[] = {
5058         400000,
5059         700000,
5060         1000000,
5061         1000000,
5062         1000000
5063 };
5064
5065 static ssize_t show_channels(struct device *d,
5066                              struct device_attribute *attr, char *buf)
5067 {
5068         /* all this shit doesn't belong into sysfs anyway */
5069         return 0;
5070 }
5071
5072 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5073
5074 static ssize_t show_statistics(struct device *d,
5075                                struct device_attribute *attr, char *buf)
5076 {
5077         struct iwl_priv *priv = dev_get_drvdata(d);
5078         u32 size = sizeof(struct iwl3945_notif_statistics);
5079         u32 len = 0, ofs = 0;
5080         u8 *data = (u8 *)&priv->statistics_39;
5081         int rc = 0;
5082
5083         if (!iwl_is_alive(priv))
5084                 return -EAGAIN;
5085
5086         mutex_lock(&priv->mutex);
5087         rc = iwl_send_statistics_request(priv, 0);
5088         mutex_unlock(&priv->mutex);
5089
5090         if (rc) {
5091                 len = sprintf(buf,
5092                               "Error sending statistics request: 0x%08X\n", rc);
5093                 return len;
5094         }
5095
5096         while (size && (PAGE_SIZE - len)) {
5097                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5098                                    PAGE_SIZE - len, 1);
5099                 len = strlen(buf);
5100                 if (PAGE_SIZE - len)
5101                         buf[len++] = '\n';
5102
5103                 ofs += 16;
5104                 size -= min(size, 16U);
5105         }
5106
5107         return len;
5108 }
5109
5110 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5111
5112 static ssize_t show_antenna(struct device *d,
5113                             struct device_attribute *attr, char *buf)
5114 {
5115         struct iwl_priv *priv = dev_get_drvdata(d);
5116
5117         if (!iwl_is_alive(priv))
5118                 return -EAGAIN;
5119
5120         return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
5121 }
5122
5123 static ssize_t store_antenna(struct device *d,
5124                              struct device_attribute *attr,
5125                              const char *buf, size_t count)
5126 {
5127         struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
5128         int ant;
5129
5130         if (count == 0)
5131                 return 0;
5132
5133         if (sscanf(buf, "%1i", &ant) != 1) {
5134                 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
5135                 return count;
5136         }
5137
5138         if ((ant >= 0) && (ant <= 2)) {
5139                 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
5140                 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
5141         } else
5142                 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
5143
5144
5145         return count;
5146 }
5147
5148 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
5149
5150 static ssize_t show_status(struct device *d,
5151                            struct device_attribute *attr, char *buf)
5152 {
5153         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5154         if (!iwl_is_alive(priv))
5155                 return -EAGAIN;
5156         return sprintf(buf, "0x%08x\n", (int)priv->status);
5157 }
5158
5159 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5160
5161 static ssize_t dump_error_log(struct device *d,
5162                               struct device_attribute *attr,
5163                               const char *buf, size_t count)
5164 {
5165         char *p = (char *)buf;
5166
5167         if (p[0] == '1')
5168                 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
5169
5170         return strnlen(buf, count);
5171 }
5172
5173 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
5174
5175 static ssize_t dump_event_log(struct device *d,
5176                               struct device_attribute *attr,
5177                               const char *buf, size_t count)
5178 {
5179         char *p = (char *)buf;
5180
5181         if (p[0] == '1')
5182                 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
5183
5184         return strnlen(buf, count);
5185 }
5186
5187 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
5188
5189 /*****************************************************************************
5190  *
5191  * driver setup and tear down
5192  *
5193  *****************************************************************************/
5194
5195 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
5196 {
5197         priv->workqueue = create_workqueue(DRV_NAME);
5198
5199         init_waitqueue_head(&priv->wait_command_queue);
5200
5201         INIT_WORK(&priv->up, iwl3945_bg_up);
5202         INIT_WORK(&priv->restart, iwl3945_bg_restart);
5203         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
5204         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
5205         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
5206         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
5207         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
5208         INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
5209         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
5210         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
5211         INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
5212         INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
5213
5214         iwl3945_hw_setup_deferred_work(priv);
5215
5216         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5217                      iwl3945_irq_tasklet, (unsigned long)priv);
5218 }
5219
5220 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
5221 {
5222         iwl3945_hw_cancel_deferred_work(priv);
5223
5224         cancel_delayed_work_sync(&priv->init_alive_start);
5225         cancel_delayed_work(&priv->scan_check);
5226         cancel_delayed_work(&priv->alive_start);
5227         cancel_work_sync(&priv->beacon_update);
5228 }
5229
5230 static struct attribute *iwl3945_sysfs_entries[] = {
5231         &dev_attr_antenna.attr,
5232         &dev_attr_channels.attr,
5233         &dev_attr_dump_errors.attr,
5234         &dev_attr_dump_events.attr,
5235         &dev_attr_flags.attr,
5236         &dev_attr_filter_flags.attr,
5237 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
5238         &dev_attr_measurement.attr,
5239 #endif
5240         &dev_attr_power_level.attr,
5241         &dev_attr_retry_rate.attr,
5242         &dev_attr_statistics.attr,
5243         &dev_attr_status.attr,
5244         &dev_attr_temperature.attr,
5245         &dev_attr_tx_power.attr,
5246 #ifdef CONFIG_IWLWIFI_DEBUG
5247         &dev_attr_debug_level.attr,
5248 #endif
5249         NULL
5250 };
5251
5252 static struct attribute_group iwl3945_attribute_group = {
5253         .name = NULL,           /* put in device directory */
5254         .attrs = iwl3945_sysfs_entries,
5255 };
5256
5257 static struct ieee80211_ops iwl3945_hw_ops = {
5258         .tx = iwl3945_mac_tx,
5259         .start = iwl3945_mac_start,
5260         .stop = iwl3945_mac_stop,
5261         .add_interface = iwl3945_mac_add_interface,
5262         .remove_interface = iwl3945_mac_remove_interface,
5263         .config = iwl3945_mac_config,
5264         .config_interface = iwl3945_mac_config_interface,
5265         .configure_filter = iwl_configure_filter,
5266         .set_key = iwl3945_mac_set_key,
5267         .get_tx_stats = iwl3945_mac_get_tx_stats,
5268         .conf_tx = iwl3945_mac_conf_tx,
5269         .reset_tsf = iwl3945_mac_reset_tsf,
5270         .bss_info_changed = iwl3945_bss_info_changed,
5271         .hw_scan = iwl3945_mac_hw_scan
5272 };
5273
5274 static int iwl3945_init_drv(struct iwl_priv *priv)
5275 {
5276         int ret;
5277         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
5278
5279         priv->retry_rate = 1;
5280         priv->ibss_beacon = NULL;
5281
5282         spin_lock_init(&priv->lock);
5283         spin_lock_init(&priv->power_data.lock);
5284         spin_lock_init(&priv->sta_lock);
5285         spin_lock_init(&priv->hcmd_lock);
5286
5287         INIT_LIST_HEAD(&priv->free_frames);
5288
5289         mutex_init(&priv->mutex);
5290
5291         /* Clear the driver's (not device's) station table */
5292         iwl3945_clear_stations_table(priv);
5293
5294         priv->data_retry_limit = -1;
5295         priv->ieee_channels = NULL;
5296         priv->ieee_rates = NULL;
5297         priv->band = IEEE80211_BAND_2GHZ;
5298
5299         priv->iw_mode = NL80211_IFTYPE_STATION;
5300
5301         iwl_reset_qos(priv);
5302
5303         priv->qos_data.qos_active = 0;
5304         priv->qos_data.qos_cap.val = 0;
5305
5306         priv->rates_mask = IWL_RATES_MASK;
5307         /* If power management is turned on, default to CAM mode */
5308         priv->power_mode = IWL_POWER_MODE_CAM;
5309         priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
5310
5311         if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
5312                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
5313                          eeprom->version);
5314                 ret = -EINVAL;
5315                 goto err;
5316         }
5317         ret = iwl_init_channel_map(priv);
5318         if (ret) {
5319                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
5320                 goto err;
5321         }
5322
5323         /* Set up txpower settings in driver for all channels */
5324         if (iwl3945_txpower_set_from_eeprom(priv)) {
5325                 ret = -EIO;
5326                 goto err_free_channel_map;
5327         }
5328
5329         ret = iwlcore_init_geos(priv);
5330         if (ret) {
5331                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
5332                 goto err_free_channel_map;
5333         }
5334         iwl3945_init_hw_rates(priv, priv->ieee_rates);
5335
5336         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
5337                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
5338                         &priv->bands[IEEE80211_BAND_2GHZ];
5339         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
5340                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
5341                         &priv->bands[IEEE80211_BAND_5GHZ];
5342
5343         return 0;
5344
5345 err_free_channel_map:
5346         iwl_free_channel_map(priv);
5347 err:
5348         return ret;
5349 }
5350
5351 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5352 {
5353         int err = 0;
5354         struct iwl_priv *priv;
5355         struct ieee80211_hw *hw;
5356         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5357         struct iwl3945_eeprom *eeprom;
5358         unsigned long flags;
5359
5360         /***********************
5361          * 1. Allocating HW data
5362          * ********************/
5363
5364         /* mac80211 allocates memory for this device instance, including
5365          *   space for this driver's private structure */
5366         hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
5367         if (hw == NULL) {
5368                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
5369                 err = -ENOMEM;
5370                 goto out;
5371         }
5372         priv = hw->priv;
5373         SET_IEEE80211_DEV(hw, &pdev->dev);
5374
5375         if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
5376              (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
5377                 IWL_ERR(priv,
5378                         "invalid queues_num, should be between %d and %d\n",
5379                         IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
5380                 err = -EINVAL;
5381                 goto out;
5382         }
5383
5384         /*
5385          * Disabling hardware scan means that mac80211 will perform scans
5386          * "the hard way", rather than using device's scan.
5387          */
5388         if (iwl3945_mod_params.disable_hw_scan) {
5389                 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
5390                 iwl3945_hw_ops.hw_scan = NULL;
5391         }
5392
5393
5394         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
5395         priv->cfg = cfg;
5396         priv->pci_dev = pdev;
5397
5398 #ifdef CONFIG_IWLWIFI_DEBUG
5399         priv->debug_level = iwl3945_mod_params.debug;
5400         atomic_set(&priv->restrict_refcnt, 0);
5401 #endif
5402         hw->rate_control_algorithm = "iwl-3945-rs";
5403         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
5404
5405         /* Tell mac80211 our characteristics */
5406         hw->flags = IEEE80211_HW_SIGNAL_DBM |
5407                     IEEE80211_HW_NOISE_DBM;
5408
5409         hw->wiphy->interface_modes =
5410                 BIT(NL80211_IFTYPE_STATION) |
5411                 BIT(NL80211_IFTYPE_ADHOC);
5412
5413         hw->wiphy->custom_regulatory = true;
5414
5415         /* 4 EDCA QOS priorities */
5416         hw->queues = 4;
5417
5418         /***************************
5419          * 2. Initializing PCI bus
5420          * *************************/
5421         if (pci_enable_device(pdev)) {
5422                 err = -ENODEV;
5423                 goto out_ieee80211_free_hw;
5424         }
5425
5426         pci_set_master(pdev);
5427
5428         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5429         if (!err)
5430                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5431         if (err) {
5432                 IWL_WARN(priv, "No suitable DMA available.\n");
5433                 goto out_pci_disable_device;
5434         }
5435
5436         pci_set_drvdata(pdev, priv);
5437         err = pci_request_regions(pdev, DRV_NAME);
5438         if (err)
5439                 goto out_pci_disable_device;
5440
5441         /***********************
5442          * 3. Read REV Register
5443          * ********************/
5444         priv->hw_base = pci_iomap(pdev, 0, 0);
5445         if (!priv->hw_base) {
5446                 err = -ENODEV;
5447                 goto out_pci_release_regions;
5448         }
5449
5450         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
5451                         (unsigned long long) pci_resource_len(pdev, 0));
5452         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
5453
5454         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5455          * PCI Tx retries from interfering with C3 CPU state */
5456         pci_write_config_byte(pdev, 0x41, 0x00);
5457
5458         /* amp init */
5459         err = priv->cfg->ops->lib->apm_ops.init(priv);
5460         if (err < 0) {
5461                 IWL_DEBUG_INFO(priv, "Failed to init APMG\n");
5462                 goto out_iounmap;
5463         }
5464
5465         /***********************
5466          * 4. Read EEPROM
5467          * ********************/
5468
5469         /* Read the EEPROM */
5470         err = iwl_eeprom_init(priv);
5471         if (err) {
5472                 IWL_ERR(priv, "Unable to init EEPROM\n");
5473                 goto out_remove_sysfs;
5474         }
5475         /* MAC Address location in EEPROM same for 3945/4965 */
5476         eeprom = (struct iwl3945_eeprom *)priv->eeprom;
5477         memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
5478         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
5479         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5480
5481         /***********************
5482          * 5. Setup HW Constants
5483          * ********************/
5484         /* Device-specific setup */
5485         if (iwl3945_hw_set_hw_params(priv)) {
5486                 IWL_ERR(priv, "failed to set hw settings\n");
5487                 goto out_iounmap;
5488         }
5489
5490         /***********************
5491          * 6. Setup priv
5492          * ********************/
5493
5494         err = iwl3945_init_drv(priv);
5495         if (err) {
5496                 IWL_ERR(priv, "initializing driver failed\n");
5497                 goto out_free_geos;
5498         }
5499
5500         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
5501                 priv->cfg->name);
5502
5503         /***********************************
5504          * 7. Initialize Module Parameters
5505          * **********************************/
5506
5507         /* Initialize module parameter values here */
5508         /* Disable radio (SW RF KILL) via parameter when loading driver */
5509         if (iwl3945_mod_params.disable) {
5510                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5511                 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
5512         }
5513
5514
5515         /***********************
5516          * 8. Setup Services
5517          * ********************/
5518
5519         spin_lock_irqsave(&priv->lock, flags);
5520         iwl3945_disable_interrupts(priv);
5521         spin_unlock_irqrestore(&priv->lock, flags);
5522
5523         pci_enable_msi(priv->pci_dev);
5524
5525         err = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
5526                           DRV_NAME, priv);
5527         if (err) {
5528                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
5529                 goto out_disable_msi;
5530         }
5531
5532         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5533         if (err) {
5534                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
5535                 goto out_release_irq;
5536         }
5537
5538         iwl_set_rxon_channel(priv,
5539                              &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
5540         iwl3945_setup_deferred_work(priv);
5541         iwl3945_setup_rx_handlers(priv);
5542
5543         /*********************************
5544          * 9. Setup and Register mac80211
5545          * *******************************/
5546
5547         err = ieee80211_register_hw(priv->hw);
5548         if (err) {
5549                 IWL_ERR(priv, "Failed to register network device: %d\n", err);
5550                 goto  out_remove_sysfs;
5551         }
5552
5553         priv->hw->conf.beacon_int = 100;
5554         priv->mac80211_registered = 1;
5555
5556         err = iwl_rfkill_init(priv);
5557         if (err)
5558                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
5559                                   "Ignoring error: %d\n", err);
5560
5561         /* Start monitoring the killswitch */
5562         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
5563                            2 * HZ);
5564
5565         return 0;
5566
5567  out_remove_sysfs:
5568         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5569  out_free_geos:
5570         iwlcore_free_geos(priv);
5571
5572  out_release_irq:
5573         free_irq(priv->pci_dev->irq, priv);
5574         destroy_workqueue(priv->workqueue);
5575         priv->workqueue = NULL;
5576         iwl3945_unset_hw_params(priv);
5577  out_disable_msi:
5578         pci_disable_msi(priv->pci_dev);
5579  out_iounmap:
5580         pci_iounmap(pdev, priv->hw_base);
5581  out_pci_release_regions:
5582         pci_release_regions(pdev);
5583  out_pci_disable_device:
5584         pci_disable_device(pdev);
5585         pci_set_drvdata(pdev, NULL);
5586  out_ieee80211_free_hw:
5587         ieee80211_free_hw(priv->hw);
5588  out:
5589         return err;
5590 }
5591
5592 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
5593 {
5594         struct iwl_priv *priv = pci_get_drvdata(pdev);
5595         unsigned long flags;
5596
5597         if (!priv)
5598                 return;
5599
5600         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
5601
5602         set_bit(STATUS_EXIT_PENDING, &priv->status);
5603
5604         if (priv->mac80211_registered) {
5605                 ieee80211_unregister_hw(priv->hw);
5606                 priv->mac80211_registered = 0;
5607         } else {
5608                 iwl3945_down(priv);
5609         }
5610
5611         /* make sure we flush any pending irq or
5612          * tasklet for the driver
5613          */
5614         spin_lock_irqsave(&priv->lock, flags);
5615         iwl3945_disable_interrupts(priv);
5616         spin_unlock_irqrestore(&priv->lock, flags);
5617
5618         iwl_synchronize_irq(priv);
5619
5620         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5621
5622         iwl_rfkill_unregister(priv);
5623         cancel_delayed_work(&priv->rfkill_poll);
5624
5625         iwl3945_dealloc_ucode_pci(priv);
5626
5627         if (priv->rxq.bd)
5628                 iwl_rx_queue_free(priv, &priv->rxq);
5629         iwl3945_hw_txq_ctx_free(priv);
5630
5631         iwl3945_unset_hw_params(priv);
5632         iwl3945_clear_stations_table(priv);
5633
5634         /*netif_stop_queue(dev); */
5635         flush_workqueue(priv->workqueue);
5636
5637         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
5638          * priv->workqueue... so we can't take down the workqueue
5639          * until now... */
5640         destroy_workqueue(priv->workqueue);
5641         priv->workqueue = NULL;
5642
5643         free_irq(pdev->irq, priv);
5644         pci_disable_msi(pdev);
5645
5646         pci_iounmap(pdev, priv->hw_base);
5647         pci_release_regions(pdev);
5648         pci_disable_device(pdev);
5649         pci_set_drvdata(pdev, NULL);
5650
5651         iwl_free_channel_map(priv);
5652         iwlcore_free_geos(priv);
5653         kfree(priv->scan);
5654         if (priv->ibss_beacon)
5655                 dev_kfree_skb(priv->ibss_beacon);
5656
5657         ieee80211_free_hw(priv->hw);
5658 }
5659
5660 #ifdef CONFIG_PM
5661
5662 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5663 {
5664         struct iwl_priv *priv = pci_get_drvdata(pdev);
5665
5666         if (priv->is_open) {
5667                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5668                 iwl3945_mac_stop(priv->hw);
5669                 priv->is_open = 1;
5670         }
5671         pci_save_state(pdev);
5672         pci_disable_device(pdev);
5673         pci_set_power_state(pdev, PCI_D3hot);
5674
5675         return 0;
5676 }
5677
5678 static int iwl3945_pci_resume(struct pci_dev *pdev)
5679 {
5680         struct iwl_priv *priv = pci_get_drvdata(pdev);
5681         int ret;
5682
5683         pci_set_power_state(pdev, PCI_D0);
5684         ret = pci_enable_device(pdev);
5685         if (ret)
5686                 return ret;
5687         pci_restore_state(pdev);
5688
5689         if (priv->is_open)
5690                 iwl3945_mac_start(priv->hw);
5691
5692         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5693         return 0;
5694 }
5695
5696 #endif /* CONFIG_PM */
5697
5698 /*****************************************************************************
5699  *
5700  * driver and module entry point
5701  *
5702  *****************************************************************************/
5703
5704 static struct pci_driver iwl3945_driver = {
5705         .name = DRV_NAME,
5706         .id_table = iwl3945_hw_card_ids,
5707         .probe = iwl3945_pci_probe,
5708         .remove = __devexit_p(iwl3945_pci_remove),
5709 #ifdef CONFIG_PM
5710         .suspend = iwl3945_pci_suspend,
5711         .resume = iwl3945_pci_resume,
5712 #endif
5713 };
5714
5715 static int __init iwl3945_init(void)
5716 {
5717
5718         int ret;
5719         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5720         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5721
5722         ret = iwl3945_rate_control_register();
5723         if (ret) {
5724                 printk(KERN_ERR DRV_NAME
5725                        "Unable to register rate control algorithm: %d\n", ret);
5726                 return ret;
5727         }
5728
5729         ret = pci_register_driver(&iwl3945_driver);
5730         if (ret) {
5731                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
5732                 goto error_register;
5733         }
5734
5735         return ret;
5736
5737 error_register:
5738         iwl3945_rate_control_unregister();
5739         return ret;
5740 }
5741
5742 static void __exit iwl3945_exit(void)
5743 {
5744         pci_unregister_driver(&iwl3945_driver);
5745         iwl3945_rate_control_unregister();
5746 }
5747
5748 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
5749
5750 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
5751 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
5752 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
5753 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
5754 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
5755 MODULE_PARM_DESC(swcrypto,
5756                  "using software crypto (default 1 [software])\n");
5757 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
5758 MODULE_PARM_DESC(debug, "debug output mask");
5759 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
5760 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
5761
5762 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
5763 MODULE_PARM_DESC(queues_num, "number of hw queues.");
5764
5765 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
5766 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
5767
5768 module_exit(iwl3945_exit);
5769 module_init(iwl3945_init);