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-3945.h"
  55 #include "iwl-helpers.h"
  56 #include "iwl-core.h"
  57 #include "iwl-dev.h"
  58
  59 /*
  60  * module name, copyright, version, etc.
  61  */
  62
  63 #define DRV_DESCRIPTION \
  64 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  65
  66 #ifdef CONFIG_IWL3945_DEBUG
  67 #define VD "d"
  68 #else
  69 #define VD
  70 #endif
  71
  72 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  73 #define VS "s"
  74 #else
  75 #define VS
  76 #endif
  77
  78 #define IWL39_VERSION "1.2.26k" VD VS
  79 #define DRV_COPYRIGHT   "Copyright(c) 2003-2009 Intel Corporation"
  80 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  81 #define DRV_VERSION     IWL39_VERSION
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  87 MODULE_LICENSE("GPL");
  88
  89  /* module parameters */
  90 struct iwl_mod_params iwl3945_mod_params = {
  91         .num_of_queues = IWL39_MAX_NUM_QUEUES,
  92         .sw_crypto = 1,
  93         /* the rest are 0 by default */
  94 };
  95
  96 /*************** STATION TABLE MANAGEMENT ****
  97  * mac80211 should be examined to determine if sta_info is duplicating
  98  * the functionality provided here
  99  */
 100
 101 /**************************************************************/
 102 #if 0 /* temporary disable till we add real remove station */
 103 /**
 104  * iwl3945_remove_station - Remove driver's knowledge of station.
 105  *
 106  * NOTE:  This does not remove station from device's station table.
 107  */
 108 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 109 {
 110         int index = IWL_INVALID_STATION;
 111         int i;
 112         unsigned long flags;
 113
 114         spin_lock_irqsave(&priv->sta_lock, flags);
 115
 116         if (is_ap)
 117                 index = IWL_AP_ID;
 118         else if (is_broadcast_ether_addr(addr))
 119                 index = priv->hw_params.bcast_sta_id;
 120         else
 121                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
 122                         if (priv->stations_39[i].used &&
 123                             !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 124                                                 addr)) {
 125                                 index = i;
 126                                 break;
 127                         }
 128
 129         if (unlikely(index == IWL_INVALID_STATION))
 130                 goto out;
 131
 132         if (priv->stations_39[index].used) {
 133                 priv->stations_39[index].used = 0;
 134                 priv->num_stations--;
 135         }
 136
 137         BUG_ON(priv->num_stations < 0);
 138
 139 out:
 140         spin_unlock_irqrestore(&priv->sta_lock, flags);
 141         return 0;
 142 }
 143 #endif
 144
 145 /**
 146  * iwl3945_clear_stations_table - Clear the driver's station table
 147  *
 148  * NOTE:  This does not clear or otherwise alter the device's station table.
 149  */
 150 static void iwl3945_clear_stations_table(struct iwl_priv *priv)
 151 {
 152         unsigned long flags;
 153
 154         spin_lock_irqsave(&priv->sta_lock, flags);
 155
 156         priv->num_stations = 0;
 157         memset(priv->stations_39, 0, sizeof(priv->stations_39));
 158
 159         spin_unlock_irqrestore(&priv->sta_lock, flags);
 160 }
 161
 162 /**
 163  * iwl3945_add_station - Add station to station tables in driver and device
 164  */
 165 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
 166 {
 167         int i;
 168         int index = IWL_INVALID_STATION;
 169         struct iwl3945_station_entry *station;
 170         unsigned long flags_spin;
 171         u8 rate;
 172
 173         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 174         if (is_ap)
 175                 index = IWL_AP_ID;
 176         else if (is_broadcast_ether_addr(addr))
 177                 index = priv->hw_params.bcast_sta_id;
 178         else
 179                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
 180                         if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 181                                                 addr)) {
 182                                 index = i;
 183                                 break;
 184                         }
 185
 186                         if (!priv->stations_39[i].used &&
 187                             index == IWL_INVALID_STATION)
 188                                 index = i;
 189                 }
 190
 191         /* These two conditions has the same outcome but keep them separate
 192           since they have different meaning */
 193         if (unlikely(index == IWL_INVALID_STATION)) {
 194                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 195                 return index;
 196         }
 197
 198         if (priv->stations_39[index].used &&
 199            !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
 200                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 201                 return index;
 202         }
 203
 204         IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
 205         station = &priv->stations_39[index];
 206         station->used = 1;
 207         priv->num_stations++;
 208
 209         /* Set up the REPLY_ADD_STA command to send to device */
 210         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 211         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 212         station->sta.mode = 0;
 213         station->sta.sta.sta_id = index;
 214         station->sta.station_flags = 0;
 215
 216         if (priv->band == IEEE80211_BAND_5GHZ)
 217                 rate = IWL_RATE_6M_PLCP;
 218         else
 219                 rate =  IWL_RATE_1M_PLCP;
 220
 221         /* Turn on both antennas for the station... */
 222         station->sta.rate_n_flags =
 223                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 224
 225         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 226
 227         /* Add station to device's station table */
 228         iwl3945_send_add_station(priv, &station->sta, flags);
 229         return index;
 230
 231 }
 232
 233 int iwl3945_send_statistics_request(struct iwl_priv *priv)
 234 {
 235         u32 val = 0;
 236
 237         struct iwl_host_cmd cmd = {
 238                 .id = REPLY_STATISTICS_CMD,
 239                 .len = sizeof(val),
 240                 .data = &val,
 241         };
 242
 243         return iwl_send_cmd_sync(priv, &cmd);
 244 }
 245
 246 /**
 247  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 248  * @band: 2.4 or 5 GHz band
 249  * @channel: Any channel valid for the requested band
 250
 251  * In addition to setting the staging RXON, priv->band is also set.
 252  *
 253  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 254  * in the staging RXON flag structure based on the band
 255  */
 256 static int iwl3945_set_rxon_channel(struct iwl_priv *priv,
 257                                     enum ieee80211_band band,
 258                                     u16 channel)
 259 {
 260         if (!iwl_get_channel_info(priv, band, channel)) {
 261                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 262                                channel, band);
 263                 return -EINVAL;
 264         }
 265
 266         if ((le16_to_cpu(priv->staging39_rxon.channel) == channel) &&
 267             (priv->band == band))
 268                 return 0;
 269
 270         priv->staging39_rxon.channel = cpu_to_le16(channel);
 271         if (band == IEEE80211_BAND_5GHZ)
 272                 priv->staging39_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 273         else
 274                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 275
 276         priv->band = band;
 277
 278         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 279
 280         return 0;
 281 }
 282
 283 /**
 284  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 285  *
 286  * NOTE:  This is really only useful during development and can eventually
 287  * be #ifdef'd out once the driver is stable and folks aren't actively
 288  * making changes
 289  */
 290 static int iwl3945_check_rxon_cmd(struct iwl_priv *priv)
 291 {
 292         int error = 0;
 293         int counter = 1;
 294         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
 295
 296         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 297                 error |= le32_to_cpu(rxon->flags &
 298                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 299                                  RXON_FLG_RADAR_DETECT_MSK));
 300                 if (error)
 301                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 302                                     counter++, error);
 303         } else {
 304                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 305                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 306                 if (error)
 307                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 308                                     counter++, error);
 309                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 310                 if (error)
 311                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 312                                     counter++, error);
 313         }
 314         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 315         if (error)
 316                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 317
 318         /* make sure basic rates 6Mbps and 1Mbps are supported */
 319         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 320                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 321         if (error)
 322                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 323
 324         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 325         if (error)
 326                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 327
 328         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 329                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 330         if (error)
 331                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 332                             counter++, error);
 333
 334         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 335                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 336         if (error)
 337                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 338                             counter++, error);
 339
 340         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 341                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 342         if (error)
 343                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 344                             counter++, error);
 345
 346         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 347                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 348                                 RXON_FLG_ANT_A_MSK)) == 0);
 349         if (error)
 350                 IWL_WARN(priv, "check antenna %d %d\n", counter++, error);
 351
 352         if (error)
 353                 IWL_WARN(priv, "Tuning to channel %d\n",
 354                             le16_to_cpu(rxon->channel));
 355
 356         if (error) {
 357                 IWL_ERR(priv, "Not a valid rxon_assoc_cmd field values\n");
 358                 return -1;
 359         }
 360         return 0;
 361 }
 362
 363 /**
 364  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 365  * @priv: staging_rxon is compared to active_rxon
 366  *
 367  * If the RXON structure is changing enough to require a new tune,
 368  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 369  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 370  */
 371 static int iwl3945_full_rxon_required(struct iwl_priv *priv)
 372 {
 373
 374         /* These items are only settable from the full RXON command */
 375         if (!(iwl3945_is_associated(priv)) ||
 376             compare_ether_addr(priv->staging39_rxon.bssid_addr,
 377                                priv->active39_rxon.bssid_addr) ||
 378             compare_ether_addr(priv->staging39_rxon.node_addr,
 379                                priv->active39_rxon.node_addr) ||
 380             compare_ether_addr(priv->staging39_rxon.wlap_bssid_addr,
 381                                priv->active39_rxon.wlap_bssid_addr) ||
 382             (priv->staging39_rxon.dev_type != priv->active39_rxon.dev_type) ||
 383             (priv->staging39_rxon.channel != priv->active39_rxon.channel) ||
 384             (priv->staging39_rxon.air_propagation !=
 385              priv->active39_rxon.air_propagation) ||
 386             (priv->staging39_rxon.assoc_id != priv->active39_rxon.assoc_id))
 387                 return 1;
 388
 389         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 390          * be updated with the RXON_ASSOC command -- however only some
 391          * flag transitions are allowed using RXON_ASSOC */
 392
 393         /* Check if we are not switching bands */
 394         if ((priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 395             (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK))
 396                 return 1;
 397
 398         /* Check if we are switching association toggle */
 399         if ((priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 400                 (priv->active39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 401                 return 1;
 402
 403         return 0;
 404 }
 405
 406 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
 407 {
 408         int rc = 0;
 409         struct iwl_rx_packet *res = NULL;
 410         struct iwl3945_rxon_assoc_cmd rxon_assoc;
 411         struct iwl_host_cmd cmd = {
 412                 .id = REPLY_RXON_ASSOC,
 413                 .len = sizeof(rxon_assoc),
 414                 .meta.flags = CMD_WANT_SKB,
 415                 .data = &rxon_assoc,
 416         };
 417         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging39_rxon;
 418         const struct iwl3945_rxon_cmd *rxon2 = &priv->active39_rxon;
 419
 420         if ((rxon1->flags == rxon2->flags) &&
 421             (rxon1->filter_flags == rxon2->filter_flags) &&
 422             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 423             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 424                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 425                 return 0;
 426         }
 427
 428         rxon_assoc.flags = priv->staging39_rxon.flags;
 429         rxon_assoc.filter_flags = priv->staging39_rxon.filter_flags;
 430         rxon_assoc.ofdm_basic_rates = priv->staging39_rxon.ofdm_basic_rates;
 431         rxon_assoc.cck_basic_rates = priv->staging39_rxon.cck_basic_rates;
 432         rxon_assoc.reserved = 0;
 433
 434         rc = iwl_send_cmd_sync(priv, &cmd);
 435         if (rc)
 436                 return rc;
 437
 438         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 439         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 440                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
 441                 rc = -EIO;
 442         }
 443
 444         priv->alloc_rxb_skb--;
 445         dev_kfree_skb_any(cmd.meta.u.skb);
 446
 447         return rc;
 448 }
 449
 450 /**
 451  * iwl3945_commit_rxon - commit staging_rxon to hardware
 452  *
 453  * The RXON command in staging_rxon is committed to the hardware and
 454  * the active_rxon structure is updated with the new data.  This
 455  * function correctly transitions out of the RXON_ASSOC_MSK state if
 456  * a HW tune is required based on the RXON structure changes.
 457  */
 458 static int iwl3945_commit_rxon(struct iwl_priv *priv)
 459 {
 460         /* cast away the const for active_rxon in this function */
 461         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active39_rxon;
 462         int rc = 0;
 463
 464         if (!iwl_is_alive(priv))
 465                 return -1;
 466
 467         /* always get timestamp with Rx frame */
 468         priv->staging39_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 469
 470         /* select antenna */
 471         priv->staging39_rxon.flags &=
 472             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
 473         priv->staging39_rxon.flags |= iwl3945_get_antenna_flags(priv);
 474
 475         rc = iwl3945_check_rxon_cmd(priv);
 476         if (rc) {
 477                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 478                 return -EINVAL;
 479         }
 480
 481         /* If we don't need to send a full RXON, we can use
 482          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
 483          * and other flags for the current radio configuration. */
 484         if (!iwl3945_full_rxon_required(priv)) {
 485                 rc = iwl3945_send_rxon_assoc(priv);
 486                 if (rc) {
 487                         IWL_ERR(priv, "Error setting RXON_ASSOC "
 488                                   "configuration (%d).\n", rc);
 489                         return rc;
 490                 }
 491
 492                 memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
 493
 494                 return 0;
 495         }
 496
 497         /* If we are currently associated and the new config requires
 498          * an RXON_ASSOC and the new config wants the associated mask enabled,
 499          * we must clear the associated from the active configuration
 500          * before we apply the new config */
 501         if (iwl3945_is_associated(priv) &&
 502             (priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 503                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 504                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 505
 506                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 507                                       sizeof(struct iwl3945_rxon_cmd),
 508                                       &priv->active39_rxon);
 509
 510                 /* If the mask clearing failed then we set
 511                  * active_rxon back to what it was previously */
 512                 if (rc) {
 513                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 514                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
 515                                   "configuration (%d).\n", rc);
 516                         return rc;
 517                 }
 518         }
 519
 520         IWL_DEBUG_INFO("Sending RXON\n"
 521                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 522                        "* channel = %d\n"
 523                        "* bssid = %pM\n",
 524                        ((priv->staging39_rxon.filter_flags &
 525                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 526                        le16_to_cpu(priv->staging39_rxon.channel),
 527                        priv->staging_rxon.bssid_addr);
 528
 529         /* Apply the new configuration */
 530         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 531                               sizeof(struct iwl3945_rxon_cmd), &priv->staging39_rxon);
 532         if (rc) {
 533                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
 534                 return rc;
 535         }
 536
 537         memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
 538
 539         iwl3945_clear_stations_table(priv);
 540
 541         /* If we issue a new RXON command which required a tune then we must
 542          * send a new TXPOWER command or we won't be able to Tx any frames */
 543         rc = priv->cfg->ops->lib->send_tx_power(priv);
 544         if (rc) {
 545                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
 546                 return rc;
 547         }
 548
 549         /* Add the broadcast address so we can send broadcast frames */
 550         if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
 551             IWL_INVALID_STATION) {
 552                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
 553                 return -EIO;
 554         }
 555
 556         /* If we have set the ASSOC_MSK and we are in BSS mode then
 557          * add the IWL_AP_ID to the station rate table */
 558         if (iwl3945_is_associated(priv) &&
 559             (priv->iw_mode == NL80211_IFTYPE_STATION))
 560                 if (iwl3945_add_station(priv, priv->active39_rxon.bssid_addr, 1, 0)
 561                     == IWL_INVALID_STATION) {
 562                         IWL_ERR(priv, "Error adding AP address for transmit\n");
 563                         return -EIO;
 564                 }
 565
 566         /* Init the hardware's rate fallback order based on the band */
 567         rc = iwl3945_init_hw_rate_table(priv);
 568         if (rc) {
 569                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
 570                 return -EIO;
 571         }
 572
 573         return 0;
 574 }
 575
 576 static int iwl3945_send_bt_config(struct iwl_priv *priv)
 577 {
 578         struct iwl_bt_cmd bt_cmd = {
 579                 .flags = 3,
 580                 .lead_time = 0xAA,
 581                 .max_kill = 1,
 582                 .kill_ack_mask = 0,
 583                 .kill_cts_mask = 0,
 584         };
 585
 586         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 587                                         sizeof(bt_cmd), &bt_cmd);
 588 }
 589
 590 static int iwl3945_add_sta_sync_callback(struct iwl_priv *priv,
 591                                      struct iwl_cmd *cmd, struct sk_buff *skb)
 592 {
 593         struct iwl_rx_packet *res = NULL;
 594
 595         if (!skb) {
 596                 IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
 597                 return 1;
 598         }
 599
 600         res = (struct iwl_rx_packet *)skb->data;
 601         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 602                 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
 603                           res->hdr.flags);
 604                 return 1;
 605         }
 606
 607         switch (res->u.add_sta.status) {
 608         case ADD_STA_SUCCESS_MSK:
 609                 break;
 610         default:
 611                 break;
 612         }
 613
 614         /* We didn't cache the SKB; let the caller free it */
 615         return 1;
 616 }
 617
 618 int iwl3945_send_add_station(struct iwl_priv *priv,
 619                          struct iwl3945_addsta_cmd *sta, u8 flags)
 620 {
 621         struct iwl_rx_packet *res = NULL;
 622         int rc = 0;
 623         struct iwl_host_cmd cmd = {
 624                 .id = REPLY_ADD_STA,
 625                 .len = sizeof(struct iwl3945_addsta_cmd),
 626                 .meta.flags = flags,
 627                 .data = sta,
 628         };
 629
 630         if (flags & CMD_ASYNC)
 631                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
 632         else
 633                 cmd.meta.flags |= CMD_WANT_SKB;
 634
 635         rc = iwl_send_cmd(priv, &cmd);
 636
 637         if (rc || (flags & CMD_ASYNC))
 638                 return rc;
 639
 640         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 641         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 642                 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
 643                           res->hdr.flags);
 644                 rc = -EIO;
 645         }
 646
 647         if (rc == 0) {
 648                 switch (res->u.add_sta.status) {
 649                 case ADD_STA_SUCCESS_MSK:
 650                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
 651                         break;
 652                 default:
 653                         rc = -EIO;
 654                         IWL_WARN(priv, "REPLY_ADD_STA failed\n");
 655                         break;
 656                 }
 657         }
 658
 659         priv->alloc_rxb_skb--;
 660         dev_kfree_skb_any(cmd.meta.u.skb);
 661
 662         return rc;
 663 }
 664
 665 static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
 666                                    struct ieee80211_key_conf *keyconf,
 667                                    u8 sta_id)
 668 {
 669         unsigned long flags;
 670         __le16 key_flags = 0;
 671
 672         switch (keyconf->alg) {
 673         case ALG_CCMP:
 674                 key_flags |= STA_KEY_FLG_CCMP;
 675                 key_flags |= cpu_to_le16(
 676                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
 677                 key_flags &= ~STA_KEY_FLG_INVALID;
 678                 break;
 679         case ALG_TKIP:
 680         case ALG_WEP:
 681         default:
 682                 return -EINVAL;
 683         }
 684         spin_lock_irqsave(&priv->sta_lock, flags);
 685         priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
 686         priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
 687         memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
 688                keyconf->keylen);
 689
 690         memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
 691                keyconf->keylen);
 692         priv->stations_39[sta_id].sta.key.key_flags = key_flags;
 693         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 694         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 695
 696         spin_unlock_irqrestore(&priv->sta_lock, flags);
 697
 698         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
 699         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
 700         return 0;
 701 }
 702
 703 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
 704 {
 705         unsigned long flags;
 706
 707         spin_lock_irqsave(&priv->sta_lock, flags);
 708         memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
 709         memset(&priv->stations_39[sta_id].sta.key, 0,
 710                 sizeof(struct iwl4965_keyinfo));
 711         priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
 712         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
 713         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 714         spin_unlock_irqrestore(&priv->sta_lock, flags);
 715
 716         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
 717         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
 718         return 0;
 719 }
 720
 721 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
 722 {
 723         struct list_head *element;
 724
 725         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 726                        priv->frames_count);
 727
 728         while (!list_empty(&priv->free_frames)) {
 729                 element = priv->free_frames.next;
 730                 list_del(element);
 731                 kfree(list_entry(element, struct iwl3945_frame, list));
 732                 priv->frames_count--;
 733         }
 734
 735         if (priv->frames_count) {
 736                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 737                             priv->frames_count);
 738                 priv->frames_count = 0;
 739         }
 740 }
 741
 742 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
 743 {
 744         struct iwl3945_frame *frame;
 745         struct list_head *element;
 746         if (list_empty(&priv->free_frames)) {
 747                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 748                 if (!frame) {
 749                         IWL_ERR(priv, "Could not allocate frame!\n");
 750                         return NULL;
 751                 }
 752
 753                 priv->frames_count++;
 754                 return frame;
 755         }
 756
 757         element = priv->free_frames.next;
 758         list_del(element);
 759         return list_entry(element, struct iwl3945_frame, list);
 760 }
 761
 762 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
 763 {
 764         memset(frame, 0, sizeof(*frame));
 765         list_add(&frame->list, &priv->free_frames);
 766 }
 767
 768 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
 769                                 struct ieee80211_hdr *hdr,
 770                                 int left)
 771 {
 772
 773         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
 774             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 775              (priv->iw_mode != NL80211_IFTYPE_AP)))
 776                 return 0;
 777
 778         if (priv->ibss_beacon->len > left)
 779                 return 0;
 780
 781         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 782
 783         return priv->ibss_beacon->len;
 784 }
 785
 786 static u8 iwl3945_rate_get_lowest_plcp(struct iwl_priv *priv)
 787 {
 788         u8 i;
 789         int rate_mask;
 790
 791         /* Set rate mask*/
 792         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
 793                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 794         else
 795                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 796
 797         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 798              i = iwl3945_rates[i].next_ieee) {
 799                 if (rate_mask & (1 << i))
 800                         return iwl3945_rates[i].plcp;
 801         }
 802
 803         /* No valid rate was found. Assign the lowest one */
 804         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
 805                 return IWL_RATE_1M_PLCP;
 806         else
 807                 return IWL_RATE_6M_PLCP;
 808 }
 809
 810 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
 811 {
 812         struct iwl3945_frame *frame;
 813         unsigned int frame_size;
 814         int rc;
 815         u8 rate;
 816
 817         frame = iwl3945_get_free_frame(priv);
 818
 819         if (!frame) {
 820                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 821                           "command.\n");
 822                 return -ENOMEM;
 823         }
 824
 825         rate = iwl3945_rate_get_lowest_plcp(priv);
 826
 827         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
 828
 829         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 830                               &frame->u.cmd[0]);
 831
 832         iwl3945_free_frame(priv, frame);
 833
 834         return rc;
 835 }
 836
 837 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
 838 {
 839         if (priv->shared_virt)
 840                 pci_free_consistent(priv->pci_dev,
 841                                     sizeof(struct iwl3945_shared),
 842                                     priv->shared_virt,
 843                                     priv->shared_phys);
 844 }
 845
 846 /*
 847  * QoS  support
 848 */
 849 static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
 850                                        struct iwl_qosparam_cmd *qos)
 851 {
 852
 853         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 854                                 sizeof(struct iwl_qosparam_cmd), qos);
 855 }
 856
 857 static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
 858 {
 859         unsigned long flags;
 860
 861         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 862                 return;
 863
 864         spin_lock_irqsave(&priv->lock, flags);
 865         priv->qos_data.def_qos_parm.qos_flags = 0;
 866
 867         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 868             !priv->qos_data.qos_cap.q_AP.txop_request)
 869                 priv->qos_data.def_qos_parm.qos_flags |=
 870                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 871
 872         if (priv->qos_data.qos_active)
 873                 priv->qos_data.def_qos_parm.qos_flags |=
 874                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 875
 876         spin_unlock_irqrestore(&priv->lock, flags);
 877
 878         if (force || iwl3945_is_associated(priv)) {
 879                 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
 880                               priv->qos_data.qos_active);
 881
 882                 iwl3945_send_qos_params_command(priv,
 883                                 &(priv->qos_data.def_qos_parm));
 884         }
 885 }
 886
 887 /*
 888  * Power management (not Tx power!) functions
 889  */
 890 #define MSEC_TO_USEC 1024
 891
 892
 893 /* default power management (not Tx power) table values */
 894 /* for TIM  0-10 */
 895 static struct iwl_power_vec_entry range_0[IWL_POWER_MAX] = {
 896         {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
 897         {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
 898         {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
 899         {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
 900         {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
 901         {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
 902 };
 903
 904 /* for TIM > 10 */
 905 static struct iwl_power_vec_entry range_1[IWL_POWER_MAX] = {
 906         {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
 907         {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
 908         {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
 909         {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
 910         {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
 911         {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
 912 };
 913
 914 int iwl3945_power_init_handle(struct iwl_priv *priv)
 915 {
 916         int rc = 0, i;
 917         struct iwl_power_mgr *pow_data;
 918         int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_MAX;
 919         u16 pci_pm;
 920
 921         IWL_DEBUG_POWER("Initialize power \n");
 922
 923         pow_data = &priv->power_data;
 924
 925         memset(pow_data, 0, sizeof(*pow_data));
 926
 927         pow_data->dtim_period = 1;
 928
 929         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
 930         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
 931
 932         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
 933         if (rc != 0)
 934                 return 0;
 935         else {
 936                 struct iwl_powertable_cmd *cmd;
 937
 938                 IWL_DEBUG_POWER("adjust power command flags\n");
 939
 940                 for (i = 0; i < IWL_POWER_MAX; i++) {
 941                         cmd = &pow_data->pwr_range_0[i].cmd;
 942
 943                         if (pci_pm & 0x1)
 944                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
 945                         else
 946                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
 947                 }
 948         }
 949         return rc;
 950 }
 951
 952 static int iwl3945_update_power_cmd(struct iwl_priv *priv,
 953                                 struct iwl_powertable_cmd *cmd, u32 mode)
 954 {
 955         struct iwl_power_mgr *pow_data;
 956         struct iwl_power_vec_entry *range;
 957         u32 max_sleep = 0;
 958         int i;
 959         u8 period = 0;
 960         bool skip;
 961
 962         if (mode > IWL_POWER_INDEX_5) {
 963                 IWL_DEBUG_POWER("Error invalid power mode \n");
 964                 return -EINVAL;
 965         }
 966         pow_data = &priv->power_data;
 967
 968         if (pow_data->dtim_period < 10)
 969                 range = &pow_data->pwr_range_0[0];
 970         else
 971                 range = &pow_data->pwr_range_1[1];
 972
 973         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
 974
 975
 976         if (period == 0) {
 977                 period = 1;
 978                 skip = false;
 979         } else {
 980                 skip = !!range[mode].no_dtim;
 981         }
 982
 983         if (skip) {
 984                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
 985                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
 986                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
 987         } else {
 988                 max_sleep = period;
 989                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
 990         }
 991
 992         for (i = 0; i < IWL_POWER_VEC_SIZE; i++)
 993                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
 994                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
 995
 996         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
 997         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
 998         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
 999         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1000                         le32_to_cpu(cmd->sleep_interval[0]),
1001                         le32_to_cpu(cmd->sleep_interval[1]),
1002                         le32_to_cpu(cmd->sleep_interval[2]),
1003                         le32_to_cpu(cmd->sleep_interval[3]),
1004                         le32_to_cpu(cmd->sleep_interval[4]));
1005
1006         return 0;
1007 }
1008
1009 static int iwl3945_send_power_mode(struct iwl_priv *priv, u32 mode)
1010 {
1011         u32 uninitialized_var(final_mode);
1012         int rc;
1013         struct iwl_powertable_cmd cmd;
1014
1015         /* If on battery, set to 3,
1016          * if plugged into AC power, set to CAM ("continuously aware mode"),
1017          * else user level */
1018         switch (mode) {
1019         case IWL39_POWER_BATTERY:
1020                 final_mode = IWL_POWER_INDEX_3;
1021                 break;
1022         case IWL39_POWER_AC:
1023                 final_mode = IWL_POWER_MODE_CAM;
1024                 break;
1025         default:
1026                 final_mode = mode;
1027                 break;
1028         }
1029
1030         iwl3945_update_power_cmd(priv, &cmd, final_mode);
1031
1032         /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1033         rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD,
1034                               sizeof(struct iwl3945_powertable_cmd), &cmd);
1035
1036         if (final_mode == IWL_POWER_MODE_CAM)
1037                 clear_bit(STATUS_POWER_PMI, &priv->status);
1038         else
1039                 set_bit(STATUS_POWER_PMI, &priv->status);
1040
1041         return rc;
1042 }
1043
1044 #define MAX_UCODE_BEACON_INTERVAL       1024
1045 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1046
1047 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
1048 {
1049         u16 new_val = 0;
1050         u16 beacon_factor = 0;
1051
1052         beacon_factor =
1053             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1054                 / MAX_UCODE_BEACON_INTERVAL;
1055         new_val = beacon_val / beacon_factor;
1056
1057         return cpu_to_le16(new_val);
1058 }
1059
1060 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
1061 {
1062         u64 interval_tm_unit;
1063         u64 tsf, result;
1064         unsigned long flags;
1065         struct ieee80211_conf *conf = NULL;
1066         u16 beacon_int = 0;
1067
1068         conf = ieee80211_get_hw_conf(priv->hw);
1069
1070         spin_lock_irqsave(&priv->lock, flags);
1071         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
1072         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1073
1074         tsf = priv->timestamp;
1075
1076         beacon_int = priv->beacon_int;
1077         spin_unlock_irqrestore(&priv->lock, flags);
1078
1079         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
1080                 if (beacon_int == 0) {
1081                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1082                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1083                 } else {
1084                         priv->rxon_timing.beacon_interval =
1085                                 cpu_to_le16(beacon_int);
1086                         priv->rxon_timing.beacon_interval =
1087                             iwl3945_adjust_beacon_interval(
1088                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1089                 }
1090
1091                 priv->rxon_timing.atim_window = 0;
1092         } else {
1093                 priv->rxon_timing.beacon_interval =
1094                         iwl3945_adjust_beacon_interval(conf->beacon_int);
1095                 /* TODO: we need to get atim_window from upper stack
1096                  * for now we set to 0 */
1097                 priv->rxon_timing.atim_window = 0;
1098         }
1099
1100         interval_tm_unit =
1101                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1102         result = do_div(tsf, interval_tm_unit);
1103         priv->rxon_timing.beacon_init_val =
1104             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1105
1106         IWL_DEBUG_ASSOC
1107             ("beacon interval %d beacon timer %d beacon tim %d\n",
1108                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1109                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1110                 le16_to_cpu(priv->rxon_timing.atim_window));
1111 }
1112
1113 static int iwl3945_scan_initiate(struct iwl_priv *priv)
1114 {
1115         if (!iwl_is_ready_rf(priv)) {
1116                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1117                 return -EIO;
1118         }
1119
1120         if (test_bit(STATUS_SCANNING, &priv->status)) {
1121                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1122                 return -EAGAIN;
1123         }
1124
1125         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1126                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1127                                "Queuing.\n");
1128                 return -EAGAIN;
1129         }
1130
1131         IWL_DEBUG_INFO("Starting scan...\n");
1132         if (priv->cfg->sku & IWL_SKU_G)
1133                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
1134         if (priv->cfg->sku & IWL_SKU_A)
1135                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
1136         set_bit(STATUS_SCANNING, &priv->status);
1137         priv->scan_start = jiffies;
1138         priv->scan_pass_start = priv->scan_start;
1139
1140         queue_work(priv->workqueue, &priv->request_scan);
1141
1142         return 0;
1143 }
1144
1145 static int iwl3945_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
1146 {
1147         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
1148
1149         if (hw_decrypt)
1150                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
1151         else
1152                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
1153
1154         return 0;
1155 }
1156
1157 static void iwl3945_set_flags_for_phymode(struct iwl_priv *priv,
1158                                           enum ieee80211_band band)
1159 {
1160         if (band == IEEE80211_BAND_5GHZ) {
1161                 priv->staging39_rxon.flags &=
1162                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1163                       | RXON_FLG_CCK_MSK);
1164                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1165         } else {
1166                 /* Copied from iwl3945_bg_post_associate() */
1167                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1168                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1169                 else
1170                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1171
1172                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1173                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1174
1175                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1176                 priv->staging39_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1177                 priv->staging39_rxon.flags &= ~RXON_FLG_CCK_MSK;
1178         }
1179 }
1180
1181 /*
1182  * initialize rxon structure with default values from eeprom
1183  */
1184 static void iwl3945_connection_init_rx_config(struct iwl_priv *priv,
1185                                               int mode)
1186 {
1187         const struct iwl_channel_info *ch_info;
1188
1189         memset(&priv->staging39_rxon, 0, sizeof(priv->staging39_rxon));
1190
1191         switch (mode) {
1192         case NL80211_IFTYPE_AP:
1193                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_AP;
1194                 break;
1195
1196         case NL80211_IFTYPE_STATION:
1197                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_ESS;
1198                 priv->staging39_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1199                 break;
1200
1201         case NL80211_IFTYPE_ADHOC:
1202                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1203                 priv->staging39_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1204                 priv->staging39_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1205                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1206                 break;
1207
1208         case NL80211_IFTYPE_MONITOR:
1209                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1210                 priv->staging39_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1211                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1212                 break;
1213         default:
1214                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1215                 break;
1216         }
1217
1218 #if 0
1219         /* TODO:  Figure out when short_preamble would be set and cache from
1220          * that */
1221         if (!hw_to_local(priv->hw)->short_preamble)
1222                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1223         else
1224                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1225 #endif
1226
1227         ch_info = iwl_get_channel_info(priv, priv->band,
1228                                        le16_to_cpu(priv->active39_rxon.channel));
1229
1230         if (!ch_info)
1231                 ch_info = &priv->channel_info[0];
1232
1233         /*
1234          * in some case A channels are all non IBSS
1235          * in this case force B/G channel
1236          */
1237         if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
1238                 ch_info = &priv->channel_info[0];
1239
1240         priv->staging39_rxon.channel = cpu_to_le16(ch_info->channel);
1241         if (is_channel_a_band(ch_info))
1242                 priv->band = IEEE80211_BAND_5GHZ;
1243         else
1244                 priv->band = IEEE80211_BAND_2GHZ;
1245
1246         iwl3945_set_flags_for_phymode(priv, priv->band);
1247
1248         priv->staging39_rxon.ofdm_basic_rates =
1249             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1250         priv->staging39_rxon.cck_basic_rates =
1251             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1252 }
1253
1254 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
1255 {
1256         if (mode == NL80211_IFTYPE_ADHOC) {
1257                 const struct iwl_channel_info *ch_info;
1258
1259                 ch_info = iwl_get_channel_info(priv,
1260                         priv->band,
1261                         le16_to_cpu(priv->staging39_rxon.channel));
1262
1263                 if (!ch_info || !is_channel_ibss(ch_info)) {
1264                         IWL_ERR(priv, "channel %d not IBSS channel\n",
1265                                   le16_to_cpu(priv->staging39_rxon.channel));
1266                         return -EINVAL;
1267                 }
1268         }
1269
1270         iwl3945_connection_init_rx_config(priv, mode);
1271         memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1272
1273         iwl3945_clear_stations_table(priv);
1274
1275         /* don't commit rxon if rf-kill is on*/
1276         if (!iwl_is_ready_rf(priv))
1277                 return -EAGAIN;
1278
1279         cancel_delayed_work(&priv->scan_check);
1280         if (iwl_scan_cancel_timeout(priv, 100)) {
1281                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
1282                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1283                 return -EAGAIN;
1284         }
1285
1286         iwl3945_commit_rxon(priv);
1287
1288         return 0;
1289 }
1290
1291 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1292                                       struct ieee80211_tx_info *info,
1293                                       struct iwl_cmd *cmd,
1294                                       struct sk_buff *skb_frag,
1295                                       int last_frag)
1296 {
1297         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
1298         struct iwl3945_hw_key *keyinfo =
1299             &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
1300
1301         switch (keyinfo->alg) {
1302         case ALG_CCMP:
1303                 tx->sec_ctl = TX_CMD_SEC_CCM;
1304                 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
1305                 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
1306                 break;
1307
1308         case ALG_TKIP:
1309 #if 0
1310                 tx->sec_ctl = TX_CMD_SEC_TKIP;
1311
1312                 if (last_frag)
1313                         memcpy(tx->tkip_mic.byte, skb_frag->tail - 8,
1314                                8);
1315                 else
1316                         memset(tx->tkip_mic.byte, 0, 8);
1317 #endif
1318                 break;
1319
1320         case ALG_WEP:
1321                 tx->sec_ctl = TX_CMD_SEC_WEP |
1322                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
1323
1324                 if (keyinfo->keylen == 13)
1325                         tx->sec_ctl |= TX_CMD_SEC_KEY128;
1326
1327                 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
1328
1329                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1330                              "with key %d\n", info->control.hw_key->hw_key_idx);
1331                 break;
1332
1333         default:
1334                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
1335                 break;
1336         }
1337 }
1338
1339 /*
1340  * handle build REPLY_TX command notification.
1341  */
1342 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
1343                                   struct iwl_cmd *cmd,
1344                                   struct ieee80211_tx_info *info,
1345                                   struct ieee80211_hdr *hdr, u8 std_id)
1346 {
1347         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
1348         __le32 tx_flags = tx->tx_flags;
1349         __le16 fc = hdr->frame_control;
1350         u8 rc_flags = info->control.rates[0].flags;
1351
1352         tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1353         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
1354                 tx_flags |= TX_CMD_FLG_ACK_MSK;
1355                 if (ieee80211_is_mgmt(fc))
1356                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1357                 if (ieee80211_is_probe_resp(fc) &&
1358                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1359                         tx_flags |= TX_CMD_FLG_TSF_MSK;
1360         } else {
1361                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1362                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1363         }
1364
1365         tx->sta_id = std_id;
1366         if (ieee80211_has_morefrags(fc))
1367                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1368
1369         if (ieee80211_is_data_qos(fc)) {
1370                 u8 *qc = ieee80211_get_qos_ctl(hdr);
1371                 tx->tid_tspec = qc[0] & 0xf;
1372                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1373         } else {
1374                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1375         }
1376
1377         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
1378                 tx_flags |= TX_CMD_FLG_RTS_MSK;
1379                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1380         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
1381                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1382                 tx_flags |= TX_CMD_FLG_CTS_MSK;
1383         }
1384
1385         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1386                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1387
1388         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1389         if (ieee80211_is_mgmt(fc)) {
1390                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
1391                         tx->timeout.pm_frame_timeout = cpu_to_le16(3);
1392                 else
1393                         tx->timeout.pm_frame_timeout = cpu_to_le16(2);
1394         } else {
1395                 tx->timeout.pm_frame_timeout = 0;
1396 #ifdef CONFIG_IWL3945_LEDS
1397                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
1398 #endif
1399         }
1400
1401         tx->driver_txop = 0;
1402         tx->tx_flags = tx_flags;
1403         tx->next_frame_len = 0;
1404 }
1405
1406 /**
1407  * iwl3945_get_sta_id - Find station's index within station table
1408  */
1409 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1410 {
1411         int sta_id;
1412         u16 fc = le16_to_cpu(hdr->frame_control);
1413
1414         /* If this frame is broadcast or management, use broadcast station id */
1415         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1416             is_multicast_ether_addr(hdr->addr1))
1417                 return priv->hw_params.bcast_sta_id;
1418
1419         switch (priv->iw_mode) {
1420
1421         /* If we are a client station in a BSS network, use the special
1422          * AP station entry (that's the only station we communicate with) */
1423         case NL80211_IFTYPE_STATION:
1424                 return IWL_AP_ID;
1425
1426         /* If we are an AP, then find the station, or use BCAST */
1427         case NL80211_IFTYPE_AP:
1428                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
1429                 if (sta_id != IWL_INVALID_STATION)
1430                         return sta_id;
1431                 return priv->hw_params.bcast_sta_id;
1432
1433         /* If this frame is going out to an IBSS network, find the station,
1434          * or create a new station table entry */
1435         case NL80211_IFTYPE_ADHOC: {
1436                 /* Create new station table entry */
1437                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
1438                 if (sta_id != IWL_INVALID_STATION)
1439                         return sta_id;
1440
1441                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
1442
1443                 if (sta_id != IWL_INVALID_STATION)
1444                         return sta_id;
1445
1446                 IWL_DEBUG_DROP("Station %pM not in station map. "
1447                                "Defaulting to broadcast...\n",
1448                                hdr->addr1);
1449                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1450                 return priv->hw_params.bcast_sta_id;
1451         }
1452         /* If we are in monitor mode, use BCAST. This is required for
1453          * packet injection. */
1454         case NL80211_IFTYPE_MONITOR:
1455                 return priv->hw_params.bcast_sta_id;
1456
1457         default:
1458                 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1459                         priv->iw_mode);
1460                 return priv->hw_params.bcast_sta_id;
1461         }
1462 }
1463
1464 /*
1465  * start REPLY_TX command process
1466  */
1467 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
1468 {
1469         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1470         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1471         struct iwl3945_tx_cmd *tx;
1472         struct iwl_tx_queue *txq = NULL;
1473         struct iwl_queue *q = NULL;
1474         struct iwl_cmd *out_cmd = NULL;
1475         dma_addr_t phys_addr;
1476         dma_addr_t txcmd_phys;
1477         int txq_id = skb_get_queue_mapping(skb);
1478         u16 len, idx, len_org, hdr_len;
1479         u8 id;
1480         u8 unicast;
1481         u8 sta_id;
1482         u8 tid = 0;
1483         u16 seq_number = 0;
1484         __le16 fc;
1485         u8 wait_write_ptr = 0;
1486         u8 *qc = NULL;
1487         unsigned long flags;
1488         int rc;
1489
1490         spin_lock_irqsave(&priv->lock, flags);
1491         if (iwl_is_rfkill(priv)) {
1492                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
1493                 goto drop_unlock;
1494         }
1495
1496         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
1497                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
1498                 goto drop_unlock;
1499         }
1500
1501         unicast = !is_multicast_ether_addr(hdr->addr1);
1502         id = 0;
1503
1504         fc = hdr->frame_control;
1505
1506 #ifdef CONFIG_IWL3945_DEBUG
1507         if (ieee80211_is_auth(fc))
1508                 IWL_DEBUG_TX("Sending AUTH frame\n");
1509         else if (ieee80211_is_assoc_req(fc))
1510                 IWL_DEBUG_TX("Sending ASSOC frame\n");
1511         else if (ieee80211_is_reassoc_req(fc))
1512                 IWL_DEBUG_TX("Sending REASSOC frame\n");
1513 #endif
1514
1515         /* drop all data frame if we are not associated */
1516         if (ieee80211_is_data(fc) &&
1517             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
1518             (!iwl3945_is_associated(priv) ||
1519              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
1520                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
1521                 goto drop_unlock;
1522         }
1523
1524         spin_unlock_irqrestore(&priv->lock, flags);
1525
1526         hdr_len = ieee80211_hdrlen(fc);
1527
1528         /* Find (or create) index into station table for destination station */
1529         sta_id = iwl3945_get_sta_id(priv, hdr);
1530         if (sta_id == IWL_INVALID_STATION) {
1531                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
1532                                hdr->addr1);
1533                 goto drop;
1534         }
1535
1536         IWL_DEBUG_RATE("station Id %d\n", sta_id);
1537
1538         if (ieee80211_is_data_qos(fc)) {
1539                 qc = ieee80211_get_qos_ctl(hdr);
1540                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
1541                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
1542                                 IEEE80211_SCTL_SEQ;
1543                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1544                         (hdr->seq_ctrl &
1545                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
1546                 seq_number += 0x10;
1547         }
1548
1549         /* Descriptor for chosen Tx queue */
1550         txq = &priv->txq[txq_id];
1551         q = &txq->q;
1552
1553         spin_lock_irqsave(&priv->lock, flags);
1554
1555         idx = get_cmd_index(q, q->write_ptr, 0);
1556
1557         /* Set up driver data for this TFD */
1558         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
1559         txq->txb[q->write_ptr].skb[0] = skb;
1560
1561         /* Init first empty entry in queue's array of Tx/cmd buffers */
1562         out_cmd = txq->cmd[idx];
1563         tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
1564         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1565         memset(tx, 0, sizeof(*tx));
1566
1567         /*
1568          * Set up the Tx-command (not MAC!) header.
1569          * Store the chosen Tx queue and TFD index within the sequence field;
1570          * after Tx, uCode's Tx response will return this value so driver can
1571          * locate the frame within the tx queue and do post-tx processing.
1572          */
1573         out_cmd->hdr.cmd = REPLY_TX;
1574         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
1575                                 INDEX_TO_SEQ(q->write_ptr)));
1576
1577         /* Copy MAC header from skb into command buffer */
1578         memcpy(tx->hdr, hdr, hdr_len);
1579
1580         /*
1581          * Use the first empty entry in this queue's command buffer array
1582          * to contain the Tx command and MAC header concatenated together
1583          * (payload data will be in another buffer).
1584          * Size of this varies, due to varying MAC header length.
1585          * If end is not dword aligned, we'll have 2 extra bytes at the end
1586          * of the MAC header (device reads on dword boundaries).
1587          * We'll tell device about this padding later.
1588          */
1589         len = sizeof(struct iwl3945_tx_cmd) +
1590                         sizeof(struct iwl_cmd_header) + hdr_len;
1591
1592         len_org = len;
1593         len = (len + 3) & ~3;
1594
1595         if (len_org != len)
1596                 len_org = 1;
1597         else
1598                 len_org = 0;
1599
1600         /* Physical address of this Tx command's header (not MAC header!),
1601          * within command buffer array. */
1602         txcmd_phys = pci_map_single(priv->pci_dev,
1603                                     out_cmd, sizeof(struct iwl_cmd),
1604                                     PCI_DMA_TODEVICE);
1605         pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
1606         pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
1607         /* Add buffer containing Tx command and MAC(!) header to TFD's
1608          * first entry */
1609         txcmd_phys += offsetof(struct iwl_cmd, hdr);
1610
1611         /* Add buffer containing Tx command and MAC(!) header to TFD's
1612          * first entry */
1613         priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1614                                                    txcmd_phys, len, 1, 0);
1615
1616         if (info->control.hw_key)
1617                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
1618
1619         /* Set up TFD's 2nd entry to point directly to remainder of skb,
1620          * if any (802.11 null frames have no payload). */
1621         len = skb->len - hdr_len;
1622         if (len) {
1623                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1624                                            len, PCI_DMA_TODEVICE);
1625                 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1626                                                            phys_addr, len,
1627                                                            0, U32_PAD(len));
1628         }
1629
1630         /* Total # bytes to be transmitted */
1631         len = (u16)skb->len;
1632         tx->len = cpu_to_le16(len);
1633
1634         /* TODO need this for burst mode later on */
1635         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
1636
1637         /* set is_hcca to 0; it probably will never be implemented */
1638         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
1639
1640         tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
1641         tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
1642
1643         if (!ieee80211_has_morefrags(hdr->frame_control)) {
1644                 txq->need_update = 1;
1645                 if (qc)
1646                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
1647         } else {
1648                 wait_write_ptr = 1;
1649                 txq->need_update = 0;
1650         }
1651
1652         iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
1653
1654         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
1655                            ieee80211_hdrlen(fc));
1656
1657         /* Tell device the write index *just past* this latest filled TFD */
1658         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
1659         rc = iwl_txq_update_write_ptr(priv, txq);
1660         spin_unlock_irqrestore(&priv->lock, flags);
1661
1662         if (rc)
1663                 return rc;
1664
1665         if ((iwl_queue_space(q) < q->high_mark)
1666             && priv->mac80211_registered) {
1667                 if (wait_write_ptr) {
1668                         spin_lock_irqsave(&priv->lock, flags);
1669                         txq->need_update = 1;
1670                         iwl_txq_update_write_ptr(priv, txq);
1671                         spin_unlock_irqrestore(&priv->lock, flags);
1672                 }
1673
1674                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
1675         }
1676
1677         return 0;
1678
1679 drop_unlock:
1680         spin_unlock_irqrestore(&priv->lock, flags);
1681 drop:
1682         return -1;
1683 }
1684
1685 static void iwl3945_set_rate(struct iwl_priv *priv)
1686 {
1687         const struct ieee80211_supported_band *sband = NULL;
1688         struct ieee80211_rate *rate;
1689         int i;
1690
1691         sband = iwl_get_hw_mode(priv, priv->band);
1692         if (!sband) {
1693                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1694                 return;
1695         }
1696
1697         priv->active_rate = 0;
1698         priv->active_rate_basic = 0;
1699
1700         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
1701                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
1702
1703         for (i = 0; i < sband->n_bitrates; i++) {
1704                 rate = &sband->bitrates[i];
1705                 if ((rate->hw_value < IWL_RATE_COUNT) &&
1706                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
1707                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
1708                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
1709                         priv->active_rate |= (1 << rate->hw_value);
1710                 }
1711         }
1712
1713         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1714                        priv->active_rate, priv->active_rate_basic);
1715
1716         /*
1717          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1718          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1719          * OFDM
1720          */
1721         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1722                 priv->staging39_rxon.cck_basic_rates =
1723                     ((priv->active_rate_basic &
1724                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1725         else
1726                 priv->staging39_rxon.cck_basic_rates =
1727                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1728
1729         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1730                 priv->staging39_rxon.ofdm_basic_rates =
1731                     ((priv->active_rate_basic &
1732                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1733                       IWL_FIRST_OFDM_RATE) & 0xFF;
1734         else
1735                 priv->staging39_rxon.ofdm_basic_rates =
1736                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1737 }
1738
1739 static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1740 {
1741         unsigned long flags;
1742
1743         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1744                 return;
1745
1746         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1747                           disable_radio ? "OFF" : "ON");
1748
1749         if (disable_radio) {
1750                 iwl_scan_cancel(priv);
1751                 /* FIXME: This is a workaround for AP */
1752                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
1753                         spin_lock_irqsave(&priv->lock, flags);
1754                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1755                                     CSR_UCODE_SW_BIT_RFKILL);
1756                         spin_unlock_irqrestore(&priv->lock, flags);
1757                         iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
1758                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1759                 }
1760                 return;
1761         }
1762
1763         spin_lock_irqsave(&priv->lock, flags);
1764         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1765
1766         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1767         spin_unlock_irqrestore(&priv->lock, flags);
1768
1769         /* wake up ucode */
1770         msleep(10);
1771
1772         spin_lock_irqsave(&priv->lock, flags);
1773         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1774         if (!iwl_grab_nic_access(priv))
1775                 iwl_release_nic_access(priv);
1776         spin_unlock_irqrestore(&priv->lock, flags);
1777
1778         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1779                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1780                                   "disabled by HW switch\n");
1781                 return;
1782         }
1783
1784         if (priv->is_open)
1785                 queue_work(priv->workqueue, &priv->restart);
1786         return;
1787 }
1788
1789 void iwl3945_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
1790                             u32 decrypt_res, struct ieee80211_rx_status *stats)
1791 {
1792         u16 fc =
1793             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
1794
1795         if (priv->active39_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
1796                 return;
1797
1798         if (!(fc & IEEE80211_FCTL_PROTECTED))
1799                 return;
1800
1801         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
1802         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
1803         case RX_RES_STATUS_SEC_TYPE_TKIP:
1804                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
1805                     RX_RES_STATUS_BAD_ICV_MIC)
1806                         stats->flag |= RX_FLAG_MMIC_ERROR;
1807         case RX_RES_STATUS_SEC_TYPE_WEP:
1808         case RX_RES_STATUS_SEC_TYPE_CCMP:
1809                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
1810                     RX_RES_STATUS_DECRYPT_OK) {
1811                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
1812                         stats->flag |= RX_FLAG_DECRYPTED;
1813                 }
1814                 break;
1815
1816         default:
1817                 break;
1818         }
1819 }
1820
1821 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
1822
1823 #include "iwl-spectrum.h"
1824
1825 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1826 #define BEACON_TIME_MASK_HIGH   0xFF000000
1827 #define TIME_UNIT               1024
1828
1829 /*
1830  * extended beacon time format
1831  * time in usec will be changed into a 32-bit value in 8:24 format
1832  * the high 1 byte is the beacon counts
1833  * the lower 3 bytes is the time in usec within one beacon interval
1834  */
1835
1836 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
1837 {
1838         u32 quot;
1839         u32 rem;
1840         u32 interval = beacon_interval * 1024;
1841
1842         if (!interval || !usec)
1843                 return 0;
1844
1845         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1846         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1847
1848         return (quot << 24) + rem;
1849 }
1850
1851 /* base is usually what we get from ucode with each received frame,
1852  * the same as HW timer counter counting down
1853  */
1854
1855 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1856 {
1857         u32 base_low = base & BEACON_TIME_MASK_LOW;
1858         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1859         u32 interval = beacon_interval * TIME_UNIT;
1860         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1861             (addon & BEACON_TIME_MASK_HIGH);
1862
1863         if (base_low > addon_low)
1864                 res += base_low - addon_low;
1865         else if (base_low < addon_low) {
1866                 res += interval + base_low - addon_low;
1867                 res += (1 << 24);
1868         } else
1869                 res += (1 << 24);
1870
1871         return cpu_to_le32(res);
1872 }
1873
1874 static int iwl3945_get_measurement(struct iwl_priv *priv,
1875                                struct ieee80211_measurement_params *params,
1876                                u8 type)
1877 {
1878         struct iwl_spectrum_cmd spectrum;
1879         struct iwl_rx_packet *res;
1880         struct iwl_host_cmd cmd = {
1881                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1882                 .data = (void *)&spectrum,
1883                 .meta.flags = CMD_WANT_SKB,
1884         };
1885         u32 add_time = le64_to_cpu(params->start_time);
1886         int rc;
1887         int spectrum_resp_status;
1888         int duration = le16_to_cpu(params->duration);
1889
1890         if (iwl3945_is_associated(priv))
1891                 add_time =
1892                     iwl3945_usecs_to_beacons(
1893                         le64_to_cpu(params->start_time) - priv->last_tsf,
1894                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1895
1896         memset(&spectrum, 0, sizeof(spectrum));
1897
1898         spectrum.channel_count = cpu_to_le16(1);
1899         spectrum.flags =
1900             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1901         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1902         cmd.len = sizeof(spectrum);
1903         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1904
1905         if (iwl3945_is_associated(priv))
1906                 spectrum.start_time =
1907                     iwl3945_add_beacon_time(priv->last_beacon_time,
1908                                 add_time,
1909                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1910         else
1911                 spectrum.start_time = 0;
1912
1913         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1914         spectrum.channels[0].channel = params->channel;
1915         spectrum.channels[0].type = type;
1916         if (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1917                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1918                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1919
1920         rc = iwl_send_cmd_sync(priv, &cmd);
1921         if (rc)
1922                 return rc;
1923
1924         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1925         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1926                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1927                 rc = -EIO;
1928         }
1929
1930         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1931         switch (spectrum_resp_status) {
1932         case 0:         /* Command will be handled */
1933                 if (res->u.spectrum.id != 0xff) {
1934                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
1935                                                 res->u.spectrum.id);
1936                         priv->measurement_status &= ~MEASUREMENT_READY;
1937                 }
1938                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1939                 rc = 0;
1940                 break;
1941
1942         case 1:         /* Command will not be handled */
1943                 rc = -EAGAIN;
1944                 break;
1945         }
1946
1947         dev_kfree_skb_any(cmd.meta.u.skb);
1948
1949         return rc;
1950 }
1951 #endif
1952
1953 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1954                                struct iwl_rx_mem_buffer *rxb)
1955 {
1956         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1957         struct iwl_alive_resp *palive;
1958         struct delayed_work *pwork;
1959
1960         palive = &pkt->u.alive_frame;
1961
1962         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1963                        "0x%01X 0x%01X\n",
1964                        palive->is_valid, palive->ver_type,
1965                        palive->ver_subtype);
1966
1967         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1968                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1969                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1970                        sizeof(struct iwl_alive_resp));
1971                 pwork = &priv->init_alive_start;
1972         } else {
1973                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1974                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1975                        sizeof(struct iwl_alive_resp));
1976                 pwork = &priv->alive_start;
1977                 iwl3945_disable_events(priv);
1978         }
1979
1980         /* We delay the ALIVE response by 5ms to
1981          * give the HW RF Kill time to activate... */
1982         if (palive->is_valid == UCODE_VALID_OK)
1983                 queue_delayed_work(priv->workqueue, pwork,
1984                                    msecs_to_jiffies(5));
1985         else
1986                 IWL_WARN(priv, "uCode did not respond OK.\n");
1987 }
1988
1989 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1990                                  struct iwl_rx_mem_buffer *rxb)
1991 {
1992 #ifdef CONFIG_IWLWIFI_DEBUG
1993         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1994 #endif
1995
1996         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1997         return;
1998 }
1999
2000 static void iwl3945_rx_reply_error(struct iwl_priv *priv,
2001                                struct iwl_rx_mem_buffer *rxb)
2002 {
2003         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2004
2005         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2006                 "seq 0x%04X ser 0x%08X\n",
2007                 le32_to_cpu(pkt->u.err_resp.error_type),
2008                 get_cmd_string(pkt->u.err_resp.cmd_id),
2009                 pkt->u.err_resp.cmd_id,
2010                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2011                 le32_to_cpu(pkt->u.err_resp.error_info));
2012 }
2013
2014 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2015
2016 static void iwl3945_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2017 {
2018         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2019         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active39_rxon;
2020         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
2021         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2022                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2023         rxon->channel = csa->channel;
2024         priv->staging39_rxon.channel = csa->channel;
2025 }
2026
2027 static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
2028                                           struct iwl_rx_mem_buffer *rxb)
2029 {
2030 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2031         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2032         struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
2033
2034         if (!report->state) {
2035                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2036                           "Spectrum Measure Notification: Start\n");
2037                 return;
2038         }
2039
2040         memcpy(&priv->measure_report, report, sizeof(*report));
2041         priv->measurement_status |= MEASUREMENT_READY;
2042 #endif
2043 }
2044
2045 static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
2046                                   struct iwl_rx_mem_buffer *rxb)
2047 {
2048 #ifdef CONFIG_IWL3945_DEBUG
2049         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2050         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2051         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2052                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2053 #endif
2054 }
2055
2056 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2057                                              struct iwl_rx_mem_buffer *rxb)
2058 {
2059         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2060         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2061                         "notification for %s:\n",
2062                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2063         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
2064                            le32_to_cpu(pkt->len));
2065 }
2066
2067 static void iwl3945_bg_beacon_update(struct work_struct *work)
2068 {
2069         struct iwl_priv *priv =
2070                 container_of(work, struct iwl_priv, beacon_update);
2071         struct sk_buff *beacon;
2072
2073         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2074         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2075
2076         if (!beacon) {
2077                 IWL_ERR(priv, "update beacon failed\n");
2078                 return;
2079         }
2080
2081         mutex_lock(&priv->mutex);
2082         /* new beacon skb is allocated every time; dispose previous.*/
2083         if (priv->ibss_beacon)
2084                 dev_kfree_skb(priv->ibss_beacon);
2085
2086         priv->ibss_beacon = beacon;
2087         mutex_unlock(&priv->mutex);
2088
2089         iwl3945_send_beacon_cmd(priv);
2090 }
2091
2092 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
2093                                 struct iwl_rx_mem_buffer *rxb)
2094 {
2095 #ifdef CONFIG_IWL3945_DEBUG
2096         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2097         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
2098         u8 rate = beacon->beacon_notify_hdr.rate;
2099
2100         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2101                 "tsf %d %d rate %d\n",
2102                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2103                 beacon->beacon_notify_hdr.failure_frame,
2104                 le32_to_cpu(beacon->ibss_mgr_status),
2105                 le32_to_cpu(beacon->high_tsf),
2106                 le32_to_cpu(beacon->low_tsf), rate);
2107 #endif
2108
2109         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2110             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2111                 queue_work(priv->workqueue, &priv->beacon_update);
2112 }
2113
2114 /* Service response to REPLY_SCAN_CMD (0x80) */
2115 static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
2116                               struct iwl_rx_mem_buffer *rxb)
2117 {
2118 #ifdef CONFIG_IWL3945_DEBUG
2119         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2120         struct iwl_scanreq_notification *notif =
2121             (struct iwl_scanreq_notification *)pkt->u.raw;
2122
2123         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2124 #endif
2125 }
2126
2127 /* Service SCAN_START_NOTIFICATION (0x82) */
2128 static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
2129                                     struct iwl_rx_mem_buffer *rxb)
2130 {
2131         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2132         struct iwl_scanstart_notification *notif =
2133             (struct iwl_scanstart_notification *)pkt->u.raw;
2134         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2135         IWL_DEBUG_SCAN("Scan start: "
2136                        "%d [802.11%s] "
2137                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2138                        notif->channel,
2139                        notif->band ? "bg" : "a",
2140                        notif->tsf_high,
2141                        notif->tsf_low, notif->status, notif->beacon_timer);
2142 }
2143
2144 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2145 static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
2146                                       struct iwl_rx_mem_buffer *rxb)
2147 {
2148 #ifdef CONFIG_IWLWIFI_DEBUG
2149         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2150         struct iwl_scanresults_notification *notif =
2151             (struct iwl_scanresults_notification *)pkt->u.raw;
2152 #endif
2153
2154         IWL_DEBUG_SCAN("Scan ch.res: "
2155                        "%d [802.11%s] "
2156                        "(TSF: 0x%08X:%08X) - %d "
2157                        "elapsed=%lu usec (%dms since last)\n",
2158                        notif->channel,
2159                        notif->band ? "bg" : "a",
2160                        le32_to_cpu(notif->tsf_high),
2161                        le32_to_cpu(notif->tsf_low),
2162                        le32_to_cpu(notif->statistics[0]),
2163                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2164                        jiffies_to_msecs(elapsed_jiffies
2165                                         (priv->last_scan_jiffies, jiffies)));
2166
2167         priv->last_scan_jiffies = jiffies;
2168         priv->next_scan_jiffies = 0;
2169 }
2170
2171 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2172 static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
2173                                        struct iwl_rx_mem_buffer *rxb)
2174 {
2175 #ifdef CONFIG_IWLWIFI_DEBUG
2176         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2177         struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2178 #endif
2179
2180         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2181                        scan_notif->scanned_channels,
2182                        scan_notif->tsf_low,
2183                        scan_notif->tsf_high, scan_notif->status);
2184
2185         /* The HW is no longer scanning */
2186         clear_bit(STATUS_SCAN_HW, &priv->status);
2187
2188         /* The scan completion notification came in, so kill that timer... */
2189         cancel_delayed_work(&priv->scan_check);
2190
2191         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2192                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
2193                                                         "2.4" : "5.2",
2194                        jiffies_to_msecs(elapsed_jiffies
2195                                         (priv->scan_pass_start, jiffies)));
2196
2197         /* Remove this scanned band from the list of pending
2198          * bands to scan, band G precedes A in order of scanning
2199          * as seen in iwl3945_bg_request_scan */
2200         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
2201                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
2202         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
2203                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
2204
2205         /* If a request to abort was given, or the scan did not succeed
2206          * then we reset the scan state machine and terminate,
2207          * re-queuing another scan if one has been requested */
2208         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2209                 IWL_DEBUG_INFO("Aborted scan completed.\n");
2210                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2211         } else {
2212                 /* If there are more bands on this scan pass reschedule */
2213                 if (priv->scan_bands > 0)
2214                         goto reschedule;
2215         }
2216
2217         priv->last_scan_jiffies = jiffies;
2218         priv->next_scan_jiffies = 0;
2219         IWL_DEBUG_INFO("Setting scan to off\n");
2220
2221         clear_bit(STATUS_SCANNING, &priv->status);
2222
2223         IWL_DEBUG_INFO("Scan took %dms\n",
2224                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2225
2226         queue_work(priv->workqueue, &priv->scan_completed);
2227
2228         return;
2229
2230 reschedule:
2231         priv->scan_pass_start = jiffies;
2232         queue_work(priv->workqueue, &priv->request_scan);
2233 }
2234
2235 /* Handle notification from uCode that card's power state is changing
2236  * due to software, hardware, or critical temperature RFKILL */
2237 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
2238                                     struct iwl_rx_mem_buffer *rxb)
2239 {
2240         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2241         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2242         unsigned long status = priv->status;
2243
2244         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2245                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2246                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2247
2248         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2249                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2250
2251         if (flags & HW_CARD_DISABLED)
2252                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2253         else
2254                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2255
2256
2257         if (flags & SW_CARD_DISABLED)
2258                 set_bit(STATUS_RF_KILL_SW, &priv->status);
2259         else
2260                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2261
2262         iwl_scan_cancel(priv);
2263
2264         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2265              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2266             (test_bit(STATUS_RF_KILL_SW, &status) !=
2267              test_bit(STATUS_RF_KILL_SW, &priv->status)))
2268                 queue_work(priv->workqueue, &priv->rf_kill);
2269         else
2270                 wake_up_interruptible(&priv->wait_command_queue);
2271 }
2272
2273 /**
2274  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
2275  *
2276  * Setup the RX handlers for each of the reply types sent from the uCode
2277  * to the host.
2278  *
2279  * This function chains into the hardware specific files for them to setup
2280  * any hardware specific handlers as well.
2281  */
2282 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
2283 {
2284         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
2285         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
2286         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
2287         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
2288         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2289             iwl3945_rx_spectrum_measure_notif;
2290         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
2291         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2292             iwl3945_rx_pm_debug_statistics_notif;
2293         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
2294
2295         /*
2296          * The same handler is used for both the REPLY to a discrete
2297          * statistics request from the host as well as for the periodic
2298          * statistics notifications (after received beacons) from the uCode.
2299          */
2300         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
2301         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
2302
2303         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
2304         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
2305         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2306             iwl3945_rx_scan_results_notif;
2307         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2308             iwl3945_rx_scan_complete_notif;
2309         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
2310
2311         /* Set up hardware specific Rx handlers */
2312         iwl3945_hw_rx_handler_setup(priv);
2313 }
2314
2315 /**
2316  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
2317  * When FW advances 'R' index, all entries between old and new 'R' index
2318  * need to be reclaimed.
2319  */
2320 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
2321                                       int txq_id, int index)
2322 {
2323         struct iwl_tx_queue *txq = &priv->txq[txq_id];
2324         struct iwl_queue *q = &txq->q;
2325         int nfreed = 0;
2326
2327         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
2328                 IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
2329                           "is out of range [0-%d] %d %d.\n", txq_id,
2330                           index, q->n_bd, q->write_ptr, q->read_ptr);
2331                 return;
2332         }
2333
2334         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
2335                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2336                 if (nfreed > 1) {
2337                         IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
2338                                         q->write_ptr, q->read_ptr);
2339                         queue_work(priv->workqueue, &priv->restart);
2340                         break;
2341                 }
2342                 nfreed++;
2343         }
2344 }
2345
2346
2347 /**
2348  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2349  * @rxb: Rx buffer to reclaim
2350  *
2351  * If an Rx buffer has an async callback associated with it the callback
2352  * will be executed.  The attached skb (if present) will only be freed
2353  * if the callback returns 1
2354  */
2355 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
2356                                 struct iwl_rx_mem_buffer *rxb)
2357 {
2358         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2359         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2360         int txq_id = SEQ_TO_QUEUE(sequence);
2361         int index = SEQ_TO_INDEX(sequence);
2362         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
2363         int cmd_index;
2364         struct iwl_cmd *cmd;
2365
2366         if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
2367                  "wrong command queue %d, sequence 0x%X readp=%d writep=%d\n",
2368                   txq_id, sequence,
2369                   priv->txq[IWL_CMD_QUEUE_NUM].q.read_ptr,
2370                   priv->txq[IWL_CMD_QUEUE_NUM].q.write_ptr)) {
2371                 iwl_print_hex_dump(priv, IWL_DL_INFO , rxb, 32);
2372                 return;
2373         }
2374
2375         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2376         cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2377
2378         /* Input error checking is done when commands are added to queue. */
2379         if (cmd->meta.flags & CMD_WANT_SKB) {
2380                 cmd->meta.source->u.skb = rxb->skb;
2381                 rxb->skb = NULL;
2382         } else if (cmd->meta.u.callback &&
2383                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
2384                 rxb->skb = NULL;
2385
2386         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
2387
2388         if (!(cmd->meta.flags & CMD_ASYNC)) {
2389                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2390                 wake_up_interruptible(&priv->wait_command_queue);
2391         }
2392 }
2393
2394 /************************** RX-FUNCTIONS ****************************/
2395 /*
2396  * Rx theory of operation
2397  *
2398  * The host allocates 32 DMA target addresses and passes the host address
2399  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
2400  * 0 to 31
2401  *
2402  * Rx Queue Indexes
2403  * The host/firmware share two index registers for managing the Rx buffers.
2404  *
2405  * The READ index maps to the first position that the firmware may be writing
2406  * to -- the driver can read up to (but not including) this position and get
2407  * good data.
2408  * The READ index is managed by the firmware once the card is enabled.
2409  *
2410  * The WRITE index maps to the last position the driver has read from -- the
2411  * position preceding WRITE is the last slot the firmware can place a packet.
2412  *
2413  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
2414  * WRITE = READ.
2415  *
2416  * During initialization, the host sets up the READ queue position to the first
2417  * INDEX position, and WRITE to the last (READ - 1 wrapped)
2418  *
2419  * When the firmware places a packet in a buffer, it will advance the READ index
2420  * and fire the RX interrupt.  The driver can then query the READ index and
2421  * process as many packets as possible, moving the WRITE index forward as it
2422  * resets the Rx queue buffers with new memory.
2423  *
2424  * The management in the driver is as follows:
2425  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
2426  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
2427  *   to replenish the iwl->rxq->rx_free.
2428  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
2429  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
2430  *   'processed' and 'read' driver indexes as well)
2431  * + A received packet is processed and handed to the kernel network stack,
2432  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
2433  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
2434  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
2435  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
2436  *   were enough free buffers and RX_STALLED is set it is cleared.
2437  *
2438  *
2439  * Driver sequence:
2440  *
2441  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
2442  *                            iwl3945_rx_queue_restock
2443  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
2444  *                            queue, updates firmware pointers, and updates
2445  *                            the WRITE index.  If insufficient rx_free buffers
2446  *                            are available, schedules iwl3945_rx_replenish
2447  *
2448  * -- enable interrupts --
2449  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
2450  *                            READ INDEX, detaching the SKB from the pool.
2451  *                            Moves the packet buffer from queue to rx_used.
2452  *                            Calls iwl3945_rx_queue_restock to refill any empty
2453  *                            slots.
2454  * ...
2455  *
2456  */
2457
2458 /**
2459  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
2460  */
2461 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
2462                                           dma_addr_t dma_addr)
2463 {
2464         return cpu_to_le32((u32)dma_addr);
2465 }
2466
2467 /**
2468  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
2469  *
2470  * If there are slots in the RX queue that need to be restocked,
2471  * and we have free pre-allocated buffers, fill the ranks as much
2472  * as we can, pulling from rx_free.
2473  *
2474  * This moves the 'write' index forward to catch up with 'processed', and
2475  * also updates the memory address in the firmware to reference the new
2476  * target buffer.
2477  */
2478 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
2479 {
2480         struct iwl_rx_queue *rxq = &priv->rxq;
2481         struct list_head *element;
2482         struct iwl_rx_mem_buffer *rxb;
2483         unsigned long flags;
2484         int write, rc;
2485
2486         spin_lock_irqsave(&rxq->lock, flags);
2487         write = rxq->write & ~0x7;
2488         while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
2489                 /* Get next free Rx buffer, remove from free list */
2490                 element = rxq->rx_free.next;
2491                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
2492                 list_del(element);
2493
2494                 /* Point to Rx buffer via next RBD in circular buffer */
2495                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
2496                 rxq->queue[rxq->write] = rxb;
2497                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
2498                 rxq->free_count--;
2499         }
2500         spin_unlock_irqrestore(&rxq->lock, flags);
2501         /* If the pre-allocated buffer pool is dropping low, schedule to
2502          * refill it */
2503         if (rxq->free_count <= RX_LOW_WATERMARK)
2504                 queue_work(priv->workqueue, &priv->rx_replenish);
2505
2506
2507         /* If we've added more space for the firmware to place data, tell it.
2508          * Increment device's write pointer in multiples of 8. */
2509         if ((write != (rxq->write & ~0x7))
2510             || (abs(rxq->write - rxq->read) > 7)) {
2511                 spin_lock_irqsave(&rxq->lock, flags);
2512                 rxq->need_update = 1;
2513                 spin_unlock_irqrestore(&rxq->lock, flags);
2514                 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
2515                 if (rc)
2516                         return rc;
2517         }
2518
2519         return 0;
2520 }
2521
2522 /**
2523  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
2524  *
2525  * When moving to rx_free an SKB is allocated for the slot.
2526  *
2527  * Also restock the Rx queue via iwl3945_rx_queue_restock.
2528  * This is called as a scheduled work item (except for during initialization)
2529  */
2530 static void iwl3945_rx_allocate(struct iwl_priv *priv)
2531 {
2532         struct iwl_rx_queue *rxq = &priv->rxq;
2533         struct list_head *element;
2534         struct iwl_rx_mem_buffer *rxb;
2535         unsigned long flags;
2536         spin_lock_irqsave(&rxq->lock, flags);
2537         while (!list_empty(&rxq->rx_used)) {
2538                 element = rxq->rx_used.next;
2539                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
2540
2541                 /* Alloc a new receive buffer */
2542                 rxb->skb =
2543                     alloc_skb(priv->hw_params.rx_buf_size,
2544                                 __GFP_NOWARN | GFP_ATOMIC);
2545                 if (!rxb->skb) {
2546                         if (net_ratelimit())
2547                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
2548                         /* We don't reschedule replenish work here -- we will
2549                          * call the restock method and if it still needs
2550                          * more buffers it will schedule replenish */
2551                         break;
2552                 }
2553
2554                 /* If radiotap head is required, reserve some headroom here.
2555                  * The physical head count is a variable rx_stats->phy_count.
2556                  * We reserve 4 bytes here. Plus these extra bytes, the
2557                  * headroom of the physical head should be enough for the
2558                  * radiotap head that iwl3945 supported. See iwl3945_rt.
2559                  */
2560                 skb_reserve(rxb->skb, 4);
2561
2562                 priv->alloc_rxb_skb++;
2563                 list_del(element);
2564
2565                 /* Get physical address of RB/SKB */
2566                 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
2567                                                 rxb->skb->data,
2568                                                 priv->hw_params.rx_buf_size,
2569                                                 PCI_DMA_FROMDEVICE);
2570                 list_add_tail(&rxb->list, &rxq->rx_free);
2571                 rxq->free_count++;
2572         }
2573         spin_unlock_irqrestore(&rxq->lock, flags);
2574 }
2575
2576 /*
2577  * this should be called while priv->lock is locked
2578  */
2579 static void __iwl3945_rx_replenish(void *data)
2580 {
2581         struct iwl_priv *priv = data;
2582
2583         iwl3945_rx_allocate(priv);
2584         iwl3945_rx_queue_restock(priv);
2585 }
2586
2587
2588 void iwl3945_rx_replenish(void *data)
2589 {
2590         struct iwl_priv *priv = data;
2591         unsigned long flags;
2592
2593         iwl3945_rx_allocate(priv);
2594
2595         spin_lock_irqsave(&priv->lock, flags);
2596         iwl3945_rx_queue_restock(priv);
2597         spin_unlock_irqrestore(&priv->lock, flags);
2598 }
2599
2600 /* Convert linear signal-to-noise ratio into dB */
2601 static u8 ratio2dB[100] = {
2602 /*       0   1   2   3   4   5   6   7   8   9 */
2603          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2604         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2605         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2606         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2607         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2608         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2609         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2610         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2611         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2612         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2613 };
2614
2615 /* Calculates a relative dB value from a ratio of linear
2616  *   (i.e. not dB) signal levels.
2617  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2618 int iwl3945_calc_db_from_ratio(int sig_ratio)
2619 {
2620         /* 1000:1 or higher just report as 60 dB */
2621         if (sig_ratio >= 1000)
2622                 return 60;
2623
2624         /* 100:1 or higher, divide by 10 and use table,
2625          *   add 20 dB to make up for divide by 10 */
2626         if (sig_ratio >= 100)
2627                 return 20 + (int)ratio2dB[sig_ratio/10];
2628
2629         /* We shouldn't see this */
2630         if (sig_ratio < 1)
2631                 return 0;
2632
2633         /* Use table for ratios 1:1 - 99:1 */
2634         return (int)ratio2dB[sig_ratio];
2635 }
2636
2637 #define PERFECT_RSSI (-20) /* dBm */
2638 #define WORST_RSSI (-95)   /* dBm */
2639 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2640
2641 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2642  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2643  *   about formulas used below. */
2644 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
2645 {
2646         int sig_qual;
2647         int degradation = PERFECT_RSSI - rssi_dbm;
2648
2649         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2650          * as indicator; formula is (signal dbm - noise dbm).
2651          * SNR at or above 40 is a great signal (100%).
2652          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2653          * Weakest usable signal is usually 10 - 15 dB SNR. */
2654         if (noise_dbm) {
2655                 if (rssi_dbm - noise_dbm >= 40)
2656                         return 100;
2657                 else if (rssi_dbm < noise_dbm)
2658                         return 0;
2659                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2660
2661         /* Else use just the signal level.
2662          * This formula is a least squares fit of data points collected and
2663          *   compared with a reference system that had a percentage (%) display
2664          *   for signal quality. */
2665         } else
2666                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2667                             (15 * RSSI_RANGE + 62 * degradation)) /
2668                            (RSSI_RANGE * RSSI_RANGE);
2669
2670         if (sig_qual > 100)
2671                 sig_qual = 100;
2672         else if (sig_qual < 1)
2673                 sig_qual = 0;
2674
2675         return sig_qual;
2676 }
2677
2678 /**
2679  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
2680  *
2681  * Uses the priv->rx_handlers callback function array to invoke
2682  * the appropriate handlers, including command responses,
2683  * frame-received notifications, and other notifications.
2684  */
2685 static void iwl3945_rx_handle(struct iwl_priv *priv)
2686 {
2687         struct iwl_rx_mem_buffer *rxb;
2688         struct iwl_rx_packet *pkt;
2689         struct iwl_rx_queue *rxq = &priv->rxq;
2690         u32 r, i;
2691         int reclaim;
2692         unsigned long flags;
2693         u8 fill_rx = 0;
2694         u32 count = 8;
2695
2696         /* uCode's read index (stored in shared DRAM) indicates the last Rx
2697          * buffer that the driver may process (last buffer filled by ucode). */
2698         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
2699         i = rxq->read;
2700
2701         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2702                 fill_rx = 1;
2703         /* Rx interrupt, but nothing sent from uCode */
2704         if (i == r)
2705                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
2706
2707         while (i != r) {
2708                 rxb = rxq->queue[i];
2709
2710                 /* If an RXB doesn't have a Rx queue slot associated with it,
2711                  * then a bug has been introduced in the queue refilling
2712                  * routines -- catch it here */
2713                 BUG_ON(rxb == NULL);
2714
2715                 rxq->queue[i] = NULL;
2716
2717                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
2718                                             priv->hw_params.rx_buf_size,
2719                                             PCI_DMA_FROMDEVICE);
2720                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2721
2722                 /* Reclaim a command buffer only if this packet is a response
2723                  *   to a (driver-originated) command.
2724                  * If the packet (e.g. Rx frame) originated from uCode,
2725                  *   there is no command buffer to reclaim.
2726                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2727                  *   but apparently a few don't get set; catch them here. */
2728                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2729                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2730                         (pkt->hdr.cmd != REPLY_TX);
2731
2732                 /* Based on type of command response or notification,
2733                  *   handle those that need handling via function in
2734                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
2735                 if (priv->rx_handlers[pkt->hdr.cmd]) {
2736                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
2737                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
2738                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2739                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2740                 } else {
2741                         /* No handling needed */
2742                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
2743                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2744                                 r, i, get_cmd_string(pkt->hdr.cmd),
2745                                 pkt->hdr.cmd);
2746                 }
2747
2748                 if (reclaim) {
2749                         /* Invoke any callbacks, transfer the skb to caller, and
2750                          * fire off the (possibly) blocking iwl_send_cmd()
2751                          * as we reclaim the driver command queue */
2752                         if (rxb && rxb->skb)
2753                                 iwl3945_tx_cmd_complete(priv, rxb);
2754                         else
2755                                 IWL_WARN(priv, "Claim null rxb?\n");
2756                 }
2757
2758                 /* For now we just don't re-use anything.  We can tweak this
2759                  * later to try and re-use notification packets and SKBs that
2760                  * fail to Rx correctly */
2761                 if (rxb->skb != NULL) {
2762                         priv->alloc_rxb_skb--;
2763                         dev_kfree_skb_any(rxb->skb);
2764                         rxb->skb = NULL;
2765                 }
2766
2767                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
2768                                 priv->hw_params.rx_buf_size,
2769                                 PCI_DMA_FROMDEVICE);
2770                 spin_lock_irqsave(&rxq->lock, flags);
2771                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2772                 spin_unlock_irqrestore(&rxq->lock, flags);
2773                 i = (i + 1) & RX_QUEUE_MASK;
2774                 /* If there are a lot of unused frames,
2775                  * restock the Rx queue so ucode won't assert. */
2776                 if (fill_rx) {
2777                         count++;
2778                         if (count >= 8) {
2779                                 priv->rxq.read = i;
2780                                 __iwl3945_rx_replenish(priv);
2781                                 count = 0;
2782                         }
2783                 }
2784         }
2785
2786         /* Backtrack one entry */
2787         priv->rxq.read = i;
2788         iwl3945_rx_queue_restock(priv);
2789 }
2790
2791 #ifdef CONFIG_IWL3945_DEBUG
2792 static void iwl3945_print_rx_config_cmd(struct iwl_priv *priv,
2793                                         struct iwl3945_rxon_cmd *rxon)
2794 {
2795         IWL_DEBUG_RADIO("RX CONFIG:\n");
2796         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2797         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2798         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2799         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2800                         le32_to_cpu(rxon->filter_flags));
2801         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2802         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2803                         rxon->ofdm_basic_rates);
2804         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2805         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
2806         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
2807         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2808 }
2809 #endif
2810
2811 static void iwl3945_enable_interrupts(struct iwl_priv *priv)
2812 {
2813         IWL_DEBUG_ISR("Enabling interrupts\n");
2814         set_bit(STATUS_INT_ENABLED, &priv->status);
2815         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2816 }
2817
2818
2819 /* call this function to flush any scheduled tasklet */
2820 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2821 {
2822         /* wait to make sure we flush pending tasklet*/
2823         synchronize_irq(priv->pci_dev->irq);
2824         tasklet_kill(&priv->irq_tasklet);
2825 }
2826
2827
2828 static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
2829 {
2830         clear_bit(STATUS_INT_ENABLED, &priv->status);
2831
2832         /* disable interrupts from uCode/NIC to host */
2833         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2834
2835         /* acknowledge/clear/reset any interrupts still pending
2836          * from uCode or flow handler (Rx/Tx DMA) */
2837         iwl_write32(priv, CSR_INT, 0xffffffff);
2838         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2839         IWL_DEBUG_ISR("Disabled interrupts\n");
2840 }
2841
2842 static const char *desc_lookup(int i)
2843 {
2844         switch (i) {
2845         case 1:
2846                 return "FAIL";
2847         case 2:
2848                 return "BAD_PARAM";
2849         case 3:
2850                 return "BAD_CHECKSUM";
2851         case 4:
2852                 return "NMI_INTERRUPT";
2853         case 5:
2854                 return "SYSASSERT";
2855         case 6:
2856                 return "FATAL_ERROR";
2857         }
2858
2859         return "UNKNOWN";
2860 }
2861
2862 #define ERROR_START_OFFSET  (1 * sizeof(u32))
2863 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
2864
2865 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
2866 {
2867         u32 i;
2868         u32 desc, time, count, base, data1;
2869         u32 blink1, blink2, ilink1, ilink2;
2870         int rc;
2871
2872         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2873
2874         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2875                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
2876                 return;
2877         }
2878
2879         rc = iwl_grab_nic_access(priv);
2880         if (rc) {
2881                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2882                 return;
2883         }
2884
2885         count = iwl_read_targ_mem(priv, base);
2886
2887         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2888                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2889                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2890                         priv->status, count);
2891         }
2892
2893         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
2894                   "ilink1  nmiPC   Line\n");
2895         for (i = ERROR_START_OFFSET;
2896              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
2897              i += ERROR_ELEM_SIZE) {
2898                 desc = iwl_read_targ_mem(priv, base + i);
2899                 time =
2900                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
2901                 blink1 =
2902                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
2903                 blink2 =
2904                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
2905                 ilink1 =
2906                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
2907                 ilink2 =
2908                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
2909                 data1 =
2910                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
2911
2912                 IWL_ERR(priv,
2913                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
2914                         desc_lookup(desc), desc, time, blink1, blink2,
2915                         ilink1, ilink2, data1);
2916         }
2917
2918         iwl_release_nic_access(priv);
2919
2920 }
2921
2922 #define EVENT_START_OFFSET  (6 * sizeof(u32))
2923
2924 /**
2925  * iwl3945_print_event_log - Dump error event log to syslog
2926  *
2927  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
2928  */
2929 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
2930                                 u32 num_events, u32 mode)
2931 {
2932         u32 i;
2933         u32 base;       /* SRAM byte address of event log header */
2934         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2935         u32 ptr;        /* SRAM byte address of log data */
2936         u32 ev, time, data; /* event log data */
2937
2938         if (num_events == 0)
2939                 return;
2940
2941         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2942
2943         if (mode == 0)
2944                 event_size = 2 * sizeof(u32);
2945         else
2946                 event_size = 3 * sizeof(u32);
2947
2948         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2949
2950         /* "time" is actually "data" for mode 0 (no timestamp).
2951          * place event id # at far right for easier visual parsing. */
2952         for (i = 0; i < num_events; i++) {
2953                 ev = iwl_read_targ_mem(priv, ptr);
2954                 ptr += sizeof(u32);
2955                 time = iwl_read_targ_mem(priv, ptr);
2956                 ptr += sizeof(u32);
2957                 if (mode == 0) {
2958                         /* data, ev */
2959                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
2960                 } else {
2961                         data = iwl_read_targ_mem(priv, ptr);
2962                         ptr += sizeof(u32);
2963                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
2964                 }
2965         }
2966 }
2967
2968 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
2969 {
2970         int rc;
2971         u32 base;       /* SRAM byte address of event log header */
2972         u32 capacity;   /* event log capacity in # entries */
2973         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2974         u32 num_wraps;  /* # times uCode wrapped to top of log */
2975         u32 next_entry; /* index of next entry to be written by uCode */
2976         u32 size;       /* # entries that we'll print */
2977
2978         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2979         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2980                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
2981                 return;
2982         }
2983
2984         rc = iwl_grab_nic_access(priv);
2985         if (rc) {
2986                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2987                 return;
2988         }
2989
2990         /* event log header */
2991         capacity = iwl_read_targ_mem(priv, base);
2992         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2993         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2994         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2995
2996         size = num_wraps ? capacity : next_entry;
2997
2998         /* bail out if nothing in log */
2999         if (size == 0) {
3000                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
3001                 iwl_release_nic_access(priv);
3002                 return;
3003         }
3004
3005         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
3006                   size, num_wraps);
3007
3008         /* if uCode has wrapped back to top of log, start at the oldest entry,
3009          * i.e the next one that uCode would fill. */
3010         if (num_wraps)
3011                 iwl3945_print_event_log(priv, next_entry,
3012                                     capacity - next_entry, mode);
3013
3014         /* (then/else) start at top of log */
3015         iwl3945_print_event_log(priv, 0, next_entry, mode);
3016
3017         iwl_release_nic_access(priv);
3018 }
3019
3020 /**
3021  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
3022  */
3023 static void iwl3945_irq_handle_error(struct iwl_priv *priv)
3024 {
3025         /* Set the FW error flag -- cleared on iwl3945_down */
3026         set_bit(STATUS_FW_ERROR, &priv->status);
3027
3028         /* Cancel currently queued command. */
3029         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3030
3031 #ifdef CONFIG_IWL3945_DEBUG
3032         if (priv->debug_level & IWL_DL_FW_ERRORS) {
3033                 iwl3945_dump_nic_error_log(priv);
3034                 iwl3945_dump_nic_event_log(priv);
3035                 iwl3945_print_rx_config_cmd(priv, &priv->staging39_rxon);
3036         }
3037 #endif
3038
3039         wake_up_interruptible(&priv->wait_command_queue);
3040
3041         /* Keep the restart process from trying to send host
3042          * commands by clearing the INIT status bit */
3043         clear_bit(STATUS_READY, &priv->status);
3044
3045         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3046                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
3047                           "Restarting adapter due to uCode error.\n");
3048
3049                 if (iwl3945_is_associated(priv)) {
3050                         memcpy(&priv->recovery39_rxon, &priv->active39_rxon,
3051                                sizeof(priv->recovery39_rxon));
3052                         priv->error_recovering = 1;
3053                 }
3054                 queue_work(priv->workqueue, &priv->restart);
3055         }
3056 }
3057
3058 static void iwl3945_error_recovery(struct iwl_priv *priv)
3059 {
3060         unsigned long flags;
3061
3062         memcpy(&priv->staging39_rxon, &priv->recovery39_rxon,
3063                sizeof(priv->staging39_rxon));
3064         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3065         iwl3945_commit_rxon(priv);
3066
3067         iwl3945_add_station(priv, priv->bssid, 1, 0);
3068
3069         spin_lock_irqsave(&priv->lock, flags);
3070         priv->assoc_id = le16_to_cpu(priv->staging39_rxon.assoc_id);
3071         priv->error_recovering = 0;
3072         spin_unlock_irqrestore(&priv->lock, flags);
3073 }
3074
3075 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
3076 {
3077         u32 inta, handled = 0;
3078         u32 inta_fh;
3079         unsigned long flags;
3080 #ifdef CONFIG_IWL3945_DEBUG
3081         u32 inta_mask;
3082 #endif
3083
3084         spin_lock_irqsave(&priv->lock, flags);
3085
3086         /* Ack/clear/reset pending uCode interrupts.
3087          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
3088          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
3089         inta = iwl_read32(priv, CSR_INT);
3090         iwl_write32(priv, CSR_INT, inta);
3091
3092         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
3093          * Any new interrupts that happen after this, either while we're
3094          * in this tasklet, or later, will show up in next ISR/tasklet. */
3095         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3096         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
3097
3098 #ifdef CONFIG_IWL3945_DEBUG
3099         if (priv->debug_level & IWL_DL_ISR) {
3100                 /* just for debug */
3101                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3102                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3103                               inta, inta_mask, inta_fh);
3104         }
3105 #endif
3106
3107         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
3108          * atomic, make sure that inta covers all the interrupts that
3109          * we've discovered, even if FH interrupt came in just after
3110          * reading CSR_INT. */
3111         if (inta_fh & CSR39_FH_INT_RX_MASK)
3112                 inta |= CSR_INT_BIT_FH_RX;
3113         if (inta_fh & CSR39_FH_INT_TX_MASK)
3114                 inta |= CSR_INT_BIT_FH_TX;
3115
3116         /* Now service all interrupt bits discovered above. */
3117         if (inta & CSR_INT_BIT_HW_ERR) {
3118                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
3119
3120                 /* Tell the device to stop sending interrupts */
3121                 iwl3945_disable_interrupts(priv);
3122
3123                 iwl3945_irq_handle_error(priv);
3124
3125                 handled |= CSR_INT_BIT_HW_ERR;
3126
3127                 spin_unlock_irqrestore(&priv->lock, flags);
3128
3129                 return;
3130         }
3131
3132 #ifdef CONFIG_IWL3945_DEBUG
3133         if (priv->debug_level & (IWL_DL_ISR)) {
3134                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
3135                 if (inta & CSR_INT_BIT_SCD)
3136                         IWL_DEBUG_ISR("Scheduler finished to transmit "
3137                                       "the frame/frames.\n");
3138
3139                 /* Alive notification via Rx interrupt will do the real work */
3140                 if (inta & CSR_INT_BIT_ALIVE)
3141                         IWL_DEBUG_ISR("Alive interrupt\n");
3142         }
3143 #endif
3144         /* Safely ignore these bits for debug checks below */
3145         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
3146
3147         /* Error detected by uCode */
3148         if (inta & CSR_INT_BIT_SW_ERR) {
3149                 IWL_ERR(priv, "Microcode SW error detected. "
3150                         "Restarting 0x%X.\n", inta);
3151                 iwl3945_irq_handle_error(priv);
3152                 handled |= CSR_INT_BIT_SW_ERR;
3153         }
3154
3155         /* uCode wakes up after power-down sleep */
3156         if (inta & CSR_INT_BIT_WAKEUP) {
3157                 IWL_DEBUG_ISR("Wakeup interrupt\n");
3158                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
3159                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
3160                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
3161                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
3162                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
3163                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
3164                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
3165
3166                 handled |= CSR_INT_BIT_WAKEUP;
3167         }
3168
3169         /* All uCode command responses, including Tx command responses,
3170          * Rx "responses" (frame-received notification), and other
3171          * notifications from uCode come through here*/
3172         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
3173                 iwl3945_rx_handle(priv);
3174                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
3175         }
3176
3177         if (inta & CSR_INT_BIT_FH_TX) {
3178                 IWL_DEBUG_ISR("Tx interrupt\n");
3179
3180                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
3181                 if (!iwl_grab_nic_access(priv)) {
3182                         iwl_write_direct32(priv, FH39_TCSR_CREDIT
3183                                              (FH39_SRVC_CHNL), 0x0);
3184                         iwl_release_nic_access(priv);
3185                 }
3186                 handled |= CSR_INT_BIT_FH_TX;
3187         }
3188
3189         if (inta & ~handled)
3190                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
3191
3192         if (inta & ~CSR_INI_SET_MASK) {
3193                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
3194                          inta & ~CSR_INI_SET_MASK);
3195                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
3196         }
3197
3198         /* Re-enable all interrupts */
3199         /* only Re-enable if disabled by irq */
3200         if (test_bit(STATUS_INT_ENABLED, &priv->status))
3201                 iwl3945_enable_interrupts(priv);
3202
3203 #ifdef CONFIG_IWL3945_DEBUG
3204         if (priv->debug_level & (IWL_DL_ISR)) {
3205                 inta = iwl_read32(priv, CSR_INT);
3206                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3207                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3208                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3209                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3210         }
3211 #endif
3212         spin_unlock_irqrestore(&priv->lock, flags);
3213 }
3214
3215 static irqreturn_t iwl3945_isr(int irq, void *data)
3216 {
3217         struct iwl_priv *priv = data;
3218         u32 inta, inta_mask;
3219         u32 inta_fh;
3220         if (!priv)
3221                 return IRQ_NONE;
3222
3223         spin_lock(&priv->lock);
3224
3225         /* Disable (but don't clear!) interrupts here to avoid
3226          *    back-to-back ISRs and sporadic interrupts from our NIC.
3227          * If we have something to service, the tasklet will re-enable ints.
3228          * If we *don't* have something, we'll re-enable before leaving here. */
3229         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
3230         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3231
3232         /* Discover which interrupts are active/pending */
3233         inta = iwl_read32(priv, CSR_INT);
3234         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3235
3236         /* Ignore interrupt if there's nothing in NIC to service.
3237          * This may be due to IRQ shared with another device,
3238          * or due to sporadic interrupts thrown from our NIC. */
3239         if (!inta && !inta_fh) {
3240                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3241                 goto none;
3242         }
3243
3244         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3245                 /* Hardware disappeared */
3246                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
3247                 goto unplugged;
3248         }
3249
3250         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3251                       inta, inta_mask, inta_fh);
3252
3253         inta &= ~CSR_INT_BIT_SCD;
3254
3255         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
3256         if (likely(inta || inta_fh))
3257                 tasklet_schedule(&priv->irq_tasklet);
3258 unplugged:
3259         spin_unlock(&priv->lock);
3260
3261         return IRQ_HANDLED;
3262
3263  none:
3264         /* re-enable interrupts here since we don't have anything to service. */
3265         /* only Re-enable if disabled by irq */
3266         if (test_bit(STATUS_INT_ENABLED, &priv->status))
3267                 iwl3945_enable_interrupts(priv);
3268         spin_unlock(&priv->lock);
3269         return IRQ_NONE;
3270 }
3271
3272 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
3273                                          enum ieee80211_band band,
3274                                      u8 is_active, u8 n_probes,
3275                                      struct iwl3945_scan_channel *scan_ch)
3276 {
3277         const struct ieee80211_channel *channels = NULL;
3278         const struct ieee80211_supported_band *sband;
3279         const struct iwl_channel_info *ch_info;
3280         u16 passive_dwell = 0;
3281         u16 active_dwell = 0;
3282         int added, i;
3283
3284         sband = iwl_get_hw_mode(priv, band);
3285         if (!sband)
3286                 return 0;
3287
3288         channels = sband->channels;
3289
3290         active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
3291         passive_dwell = iwl_get_passive_dwell_time(priv, band);
3292
3293         if (passive_dwell <= active_dwell)
3294                 passive_dwell = active_dwell + 1;
3295
3296         for (i = 0, added = 0; i < sband->n_channels; i++) {
3297                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
3298                         continue;
3299
3300                 scan_ch->channel = channels[i].hw_value;
3301
3302                 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
3303                 if (!is_channel_valid(ch_info)) {
3304                         IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
3305                                        scan_ch->channel);
3306                         continue;
3307                 }
3308
3309                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
3310                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
3311                 /* If passive , set up for auto-switch
3312                  *  and use long active_dwell time.
3313                  */
3314                 if (!is_active || is_channel_passive(ch_info) ||
3315                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
3316                         scan_ch->type = 0;      /* passive */
3317                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
3318                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
3319                 } else {
3320                         scan_ch->type = 1;      /* active */
3321                 }
3322
3323                 /* Set direct probe bits. These may be used both for active
3324                  * scan channels (probes gets sent right away),
3325                  * or for passive channels (probes get se sent only after
3326                  * hearing clear Rx packet).*/
3327                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
3328                         if (n_probes)
3329                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
3330                 } else {
3331                         /* uCode v1 does not allow setting direct probe bits on
3332                          * passive channel. */
3333                         if ((scan_ch->type & 1) && n_probes)
3334                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
3335                 }
3336
3337                 /* Set txpower levels to defaults */
3338                 scan_ch->tpc.dsp_atten = 110;
3339                 /* scan_pwr_info->tpc.dsp_atten; */
3340
3341                 /*scan_pwr_info->tpc.tx_gain; */
3342                 if (band == IEEE80211_BAND_5GHZ)
3343                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3344                 else {
3345                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3346                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
3347                          * power level:
3348                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
3349                          */
3350                 }
3351
3352                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3353                                scan_ch->channel,
3354                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3355                                (scan_ch->type & 1) ?
3356                                active_dwell : passive_dwell);
3357
3358                 scan_ch++;
3359                 added++;
3360         }
3361
3362         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3363         return added;
3364 }
3365
3366 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
3367                               struct ieee80211_rate *rates)
3368 {
3369         int i;
3370
3371         for (i = 0; i < IWL_RATE_COUNT; i++) {
3372                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
3373                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3374                 rates[i].hw_value_short = i;
3375                 rates[i].flags = 0;
3376                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
3377                         /*
3378                          * If CCK != 1M then set short preamble rate flag.
3379                          */
3380                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
3381                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3382                 }
3383         }
3384 }
3385
3386 /**
3387  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
3388  */
3389 #define IEEE80211_24GHZ_MAX_CHANNEL 14
3390 static int iwl3945_init_geos(struct iwl_priv *priv)
3391 {
3392         struct iwl_channel_info *ch;
3393         struct ieee80211_supported_band *sband;
3394         struct ieee80211_channel *channels;
3395         struct ieee80211_channel *geo_ch;
3396         struct ieee80211_rate *rates;
3397         int i = 0;
3398
3399         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
3400             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
3401                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
3402                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
3403                 return 0;
3404         }
3405
3406         channels = kzalloc(sizeof(struct ieee80211_channel) *
3407                            priv->channel_count, GFP_KERNEL);
3408         if (!channels)
3409                 return -ENOMEM;
3410
3411         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
3412                         GFP_KERNEL);
3413         if (!rates) {
3414                 kfree(channels);
3415                 return -ENOMEM;
3416         }
3417
3418         /* 5.2GHz channels start after the 2.4GHz channels */
3419         sband = &priv->bands[IEEE80211_BAND_5GHZ];
3420         sband->channels = &channels[IEEE80211_24GHZ_MAX_CHANNEL];
3421         /* just OFDM */
3422         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
3423         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
3424
3425         sband = &priv->bands[IEEE80211_BAND_2GHZ];
3426         sband->channels = channels;
3427         /* OFDM & CCK */
3428         sband->bitrates = rates;
3429         sband->n_bitrates = IWL_RATE_COUNT;
3430
3431         priv->ieee_channels = channels;
3432         priv->ieee_rates = rates;
3433
3434         iwl3945_init_hw_rates(priv, rates);
3435
3436         for (i = 0;  i < priv->channel_count; i++) {
3437                 ch = &priv->channel_info[i];
3438
3439                 /* FIXME: might be removed if scan is OK*/
3440                 if (!is_channel_valid(ch))
3441                         continue;
3442
3443                 if (is_channel_a_band(ch))
3444                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
3445                 else
3446                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
3447
3448                 geo_ch = &sband->channels[sband->n_channels++];
3449
3450                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
3451                 geo_ch->max_power = ch->max_power_avg;
3452                 geo_ch->max_antenna_gain = 0xff;
3453                 geo_ch->hw_value = ch->channel;
3454
3455                 if (is_channel_valid(ch)) {
3456                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
3457                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
3458
3459                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
3460                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
3461
3462                         if (ch->flags & EEPROM_CHANNEL_RADAR)
3463                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
3464
3465                         if (ch->max_power_avg > priv->tx_power_channel_lmt)
3466                                 priv->tx_power_channel_lmt =
3467                                     ch->max_power_avg;
3468                 } else {
3469                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
3470                 }
3471
3472                 /* Save flags for reg domain usage */
3473                 geo_ch->orig_flags = geo_ch->flags;
3474
3475                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
3476                                 ch->channel, geo_ch->center_freq,
3477                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
3478                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
3479                                 "restricted" : "valid",
3480                                  geo_ch->flags);
3481         }
3482
3483         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
3484              priv->cfg->sku & IWL_SKU_A) {
3485                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
3486                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
3487                         priv->pci_dev->device, priv->pci_dev->subsystem_device);
3488                  priv->cfg->sku &= ~IWL_SKU_A;
3489         }
3490
3491         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
3492                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
3493                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
3494
3495         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3496                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3497                         &priv->bands[IEEE80211_BAND_2GHZ];
3498         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3499                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3500                         &priv->bands[IEEE80211_BAND_5GHZ];
3501
3502         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
3503
3504         return 0;
3505 }
3506
3507 /*
3508  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
3509  */
3510 static void iwl3945_free_geos(struct iwl_priv *priv)
3511 {
3512         kfree(priv->ieee_channels);
3513         kfree(priv->ieee_rates);
3514         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
3515 }
3516
3517 /******************************************************************************
3518  *
3519  * uCode download functions
3520  *
3521  ******************************************************************************/
3522
3523 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
3524 {
3525         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3526         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3527         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3528         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3529         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3530         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
3531 }
3532
3533 /**
3534  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
3535  *     looking at all data.
3536  */
3537 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
3538 {
3539         u32 val;
3540         u32 save_len = len;
3541         int rc = 0;
3542         u32 errcnt;
3543
3544         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
3545
3546         rc = iwl_grab_nic_access(priv);
3547         if (rc)
3548                 return rc;
3549
3550         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
3551                                IWL39_RTC_INST_LOWER_BOUND);
3552
3553         errcnt = 0;
3554         for (; len > 0; len -= sizeof(u32), image++) {
3555                 /* read data comes through single port, auto-incr addr */
3556                 /* NOTE: Use the debugless read so we don't flood kernel log
3557                  * if IWL_DL_IO is set */
3558                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
3559                 if (val != le32_to_cpu(*image)) {
3560                         IWL_ERR(priv, "uCode INST section is invalid at "
3561                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
3562                                   save_len - len, val, le32_to_cpu(*image));
3563                         rc = -EIO;
3564                         errcnt++;
3565                         if (errcnt >= 20)
3566                                 break;
3567                 }
3568         }
3569
3570         iwl_release_nic_access(priv);
3571
3572         if (!errcnt)
3573                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
3574
3575         return rc;
3576 }
3577
3578
3579 /**
3580  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
3581  *   using sample data 100 bytes apart.  If these sample points are good,
3582  *   it's a pretty good bet that everything between them is good, too.
3583  */
3584 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
3585 {
3586         u32 val;
3587         int rc = 0;
3588         u32 errcnt = 0;
3589         u32 i;
3590
3591         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
3592
3593         rc = iwl_grab_nic_access(priv);
3594         if (rc)
3595                 return rc;
3596
3597         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
3598                 /* read data comes through single port, auto-incr addr */
3599                 /* NOTE: Use the debugless read so we don't flood kernel log
3600                  * if IWL_DL_IO is set */
3601                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
3602                         i + IWL39_RTC_INST_LOWER_BOUND);
3603                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
3604                 if (val != le32_to_cpu(*image)) {
3605 #if 0 /* Enable this if you want to see details */
3606                         IWL_ERR(priv, "uCode INST section is invalid at "
3607                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
3608                                   i, val, *image);
3609 #endif
3610                         rc = -EIO;
3611                         errcnt++;
3612                         if (errcnt >= 3)
3613                                 break;
3614                 }
3615         }
3616
3617         iwl_release_nic_access(priv);
3618
3619         return rc;
3620 }
3621
3622
3623 /**
3624  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
3625  *    and verify its contents
3626  */
3627 static int iwl3945_verify_ucode(struct iwl_priv *priv)
3628 {
3629         __le32 *image;
3630         u32 len;
3631         int rc = 0;
3632
3633         /* Try bootstrap */
3634         image = (__le32 *)priv->ucode_boot.v_addr;
3635         len = priv->ucode_boot.len;
3636         rc = iwl3945_verify_inst_sparse(priv, image, len);
3637         if (rc == 0) {
3638                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
3639                 return 0;
3640         }
3641
3642         /* Try initialize */
3643         image = (__le32 *)priv->ucode_init.v_addr;
3644         len = priv->ucode_init.len;
3645         rc = iwl3945_verify_inst_sparse(priv, image, len);
3646         if (rc == 0) {
3647                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
3648                 return 0;
3649         }
3650
3651         /* Try runtime/protocol */
3652         image = (__le32 *)priv->ucode_code.v_addr;
3653         len = priv->ucode_code.len;
3654         rc = iwl3945_verify_inst_sparse(priv, image, len);
3655         if (rc == 0) {
3656                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
3657                 return 0;
3658         }
3659
3660         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
3661
3662         /* Since nothing seems to match, show first several data entries in
3663          * instruction SRAM, so maybe visual inspection will give a clue.
3664          * Selection of bootstrap image (vs. other images) is arbitrary. */
3665         image = (__le32 *)priv->ucode_boot.v_addr;
3666         len = priv->ucode_boot.len;
3667         rc = iwl3945_verify_inst_full(priv, image, len);
3668
3669         return rc;
3670 }
3671
3672 static void iwl3945_nic_start(struct iwl_priv *priv)
3673 {
3674         /* Remove all resets to allow NIC to operate */
3675         iwl_write32(priv, CSR_RESET, 0);
3676 }
3677
3678 /**
3679  * iwl3945_read_ucode - Read uCode images from disk file.
3680  *
3681  * Copy into buffers for card to fetch via bus-mastering
3682  */
3683 static int iwl3945_read_ucode(struct iwl_priv *priv)
3684 {
3685         struct iwl_ucode *ucode;
3686         int ret = -EINVAL, index;
3687         const struct firmware *ucode_raw;
3688         /* firmware file name contains uCode/driver compatibility version */
3689         const char *name_pre = priv->cfg->fw_name_pre;
3690         const unsigned int api_max = priv->cfg->ucode_api_max;
3691         const unsigned int api_min = priv->cfg->ucode_api_min;
3692         char buf[25];
3693         u8 *src;
3694         size_t len;
3695         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
3696
3697         /* Ask kernel firmware_class module to get the boot firmware off disk.
3698          * request_firmware() is synchronous, file is in memory on return. */
3699         for (index = api_max; index >= api_min; index--) {
3700                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
3701                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
3702                 if (ret < 0) {
3703                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
3704                                   buf, ret);
3705                         if (ret == -ENOENT)
3706                                 continue;
3707                         else
3708                                 goto error;
3709                 } else {
3710                         if (index < api_max)
3711                                 IWL_ERR(priv, "Loaded firmware %s, "
3712                                         "which is deprecated. "
3713                                         " Please use API v%u instead.\n",
3714                                           buf, api_max);
3715                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3716                                        buf, ucode_raw->size);
3717                         break;
3718                 }
3719         }
3720
3721         if (ret < 0)
3722                 goto error;
3723
3724         /* Make sure that we got at least our header! */
3725         if (ucode_raw->size < sizeof(*ucode)) {
3726                 IWL_ERR(priv, "File size way too small!\n");
3727                 ret = -EINVAL;
3728                 goto err_release;
3729         }
3730
3731         /* Data from ucode file:  header followed by uCode images */
3732         ucode = (void *)ucode_raw->data;
3733
3734         priv->ucode_ver = le32_to_cpu(ucode->ver);
3735         api_ver = IWL_UCODE_API(priv->ucode_ver);
3736         inst_size = le32_to_cpu(ucode->inst_size);
3737         data_size = le32_to_cpu(ucode->data_size);
3738         init_size = le32_to_cpu(ucode->init_size);
3739         init_data_size = le32_to_cpu(ucode->init_data_size);
3740         boot_size = le32_to_cpu(ucode->boot_size);
3741
3742         /* api_ver should match the api version forming part of the
3743          * firmware filename ... but we don't check for that and only rely
3744          * on the API version read from firware header from here on forward */
3745
3746         if (api_ver < api_min || api_ver > api_max) {
3747                 IWL_ERR(priv, "Driver unable to support your firmware API. "
3748                           "Driver supports v%u, firmware is v%u.\n",
3749                           api_max, api_ver);
3750                 priv->ucode_ver = 0;
3751                 ret = -EINVAL;
3752                 goto err_release;
3753         }
3754         if (api_ver != api_max)
3755                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
3756                           "got %u. New firmware can be obtained "
3757                           "from http://www.intellinuxwireless.org.\n",
3758                           api_max, api_ver);
3759
3760         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
3761                 IWL_UCODE_MAJOR(priv->ucode_ver),
3762                 IWL_UCODE_MINOR(priv->ucode_ver),
3763                 IWL_UCODE_API(priv->ucode_ver),
3764                 IWL_UCODE_SERIAL(priv->ucode_ver));
3765
3766         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
3767                        priv->ucode_ver);
3768         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
3769         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
3770         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
3771         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
3772         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
3773
3774
3775         /* Verify size of file vs. image size info in file's header */
3776         if (ucode_raw->size < sizeof(*ucode) +
3777                 inst_size + data_size + init_size +
3778                 init_data_size + boot_size) {
3779
3780                 IWL_DEBUG_INFO("uCode file size %d too small\n",
3781                                (int)ucode_raw->size);
3782                 ret = -EINVAL;
3783                 goto err_release;
3784         }
3785
3786         /* Verify that uCode images will fit in card's SRAM */
3787         if (inst_size > IWL39_MAX_INST_SIZE) {
3788                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3789                                inst_size);
3790                 ret = -EINVAL;
3791                 goto err_release;
3792         }
3793
3794         if (data_size > IWL39_MAX_DATA_SIZE) {
3795                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3796                                data_size);
3797                 ret = -EINVAL;
3798                 goto err_release;
3799         }
3800         if (init_size > IWL39_MAX_INST_SIZE) {
3801                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
3802                                 init_size);
3803                 ret = -EINVAL;
3804                 goto err_release;
3805         }
3806         if (init_data_size > IWL39_MAX_DATA_SIZE) {
3807                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
3808                                 init_data_size);
3809                 ret = -EINVAL;
3810                 goto err_release;
3811         }
3812         if (boot_size > IWL39_MAX_BSM_SIZE) {
3813                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
3814                                 boot_size);
3815                 ret = -EINVAL;
3816                 goto err_release;
3817         }
3818
3819         /* Allocate ucode buffers for card's bus-master loading ... */
3820
3821         /* Runtime instructions and 2 copies of data:
3822          * 1) unmodified from disk
3823          * 2) backup cache for save/restore during power-downs */
3824         priv->ucode_code.len = inst_size;
3825         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3826
3827         priv->ucode_data.len = data_size;
3828         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3829
3830         priv->ucode_data_backup.len = data_size;
3831         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3832
3833         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
3834             !priv->ucode_data_backup.v_addr)
3835                 goto err_pci_alloc;
3836
3837         /* Initialization instructions and data */
3838         if (init_size && init_data_size) {
3839                 priv->ucode_init.len = init_size;
3840                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3841
3842                 priv->ucode_init_data.len = init_data_size;
3843                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3844
3845                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3846                         goto err_pci_alloc;
3847         }
3848
3849         /* Bootstrap (instructions only, no data) */
3850         if (boot_size) {
3851                 priv->ucode_boot.len = boot_size;
3852                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3853
3854                 if (!priv->ucode_boot.v_addr)
3855                         goto err_pci_alloc;
3856         }
3857
3858         /* Copy images into buffers for card's bus-master reads ... */
3859
3860         /* Runtime instructions (first block of data in file) */
3861         src = &ucode->data[0];
3862         len = priv->ucode_code.len;
3863         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
3864         memcpy(priv->ucode_code.v_addr, src, len);
3865         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3866                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3867
3868         /* Runtime data (2nd block)
3869          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
3870         src = &ucode->data[inst_size];
3871         len = priv->ucode_data.len;
3872         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
3873         memcpy(priv->ucode_data.v_addr, src, len);
3874         memcpy(priv->ucode_data_backup.v_addr, src, len);
3875
3876         /* Initialization instructions (3rd block) */
3877         if (init_size) {
3878                 src = &ucode->data[inst_size + data_size];
3879                 len = priv->ucode_init.len;
3880                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3881                                len);
3882                 memcpy(priv->ucode_init.v_addr, src, len);
3883         }
3884
3885         /* Initialization data (4th block) */
3886         if (init_data_size) {
3887                 src = &ucode->data[inst_size + data_size + init_size];
3888                 len = priv->ucode_init_data.len;
3889                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
3890                                (int)len);
3891                 memcpy(priv->ucode_init_data.v_addr, src, len);
3892         }
3893
3894         /* Bootstrap instructions (5th block) */
3895         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3896         len = priv->ucode_boot.len;
3897         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
3898                        (int)len);
3899         memcpy(priv->ucode_boot.v_addr, src, len);
3900
3901         /* We have our copies now, allow OS release its copies */
3902         release_firmware(ucode_raw);
3903         return 0;
3904
3905  err_pci_alloc:
3906         IWL_ERR(priv, "failed to allocate pci memory\n");
3907         ret = -ENOMEM;
3908         iwl3945_dealloc_ucode_pci(priv);
3909
3910  err_release:
3911         release_firmware(ucode_raw);
3912
3913  error:
3914         return ret;
3915 }
3916
3917
3918 /**
3919  * iwl3945_set_ucode_ptrs - Set uCode address location
3920  *
3921  * Tell initialization uCode where to find runtime uCode.
3922  *
3923  * BSM registers initially contain pointers to initialization uCode.
3924  * We need to replace them to load runtime uCode inst and data,
3925  * and to save runtime data when powering down.
3926  */
3927 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
3928 {
3929         dma_addr_t pinst;
3930         dma_addr_t pdata;
3931         int rc = 0;
3932         unsigned long flags;
3933
3934         /* bits 31:0 for 3945 */
3935         pinst = priv->ucode_code.p_addr;
3936         pdata = priv->ucode_data_backup.p_addr;
3937
3938         spin_lock_irqsave(&priv->lock, flags);
3939         rc = iwl_grab_nic_access(priv);
3940         if (rc) {
3941                 spin_unlock_irqrestore(&priv->lock, flags);
3942                 return rc;
3943         }
3944
3945         /* Tell bootstrap uCode where to find image to load */
3946         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
3947         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
3948         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
3949                                  priv->ucode_data.len);
3950
3951         /* Inst byte count must be last to set up, bit 31 signals uCode
3952          *   that all new ptr/size info is in place */
3953         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
3954                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
3955
3956         iwl_release_nic_access(priv);
3957
3958         spin_unlock_irqrestore(&priv->lock, flags);
3959
3960         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
3961
3962         return rc;
3963 }
3964
3965 /**
3966  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
3967  *
3968  * Called after REPLY_ALIVE notification received from "initialize" uCode.
3969  *
3970  * Tell "initialize" uCode to go ahead and load the runtime uCode.
3971  */
3972 static void iwl3945_init_alive_start(struct iwl_priv *priv)
3973 {
3974         /* Check alive response for "valid" sign from uCode */
3975         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
3976                 /* We had an error bringing up the hardware, so take it
3977                  * all the way back down so we can try again */
3978                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
3979                 goto restart;
3980         }
3981
3982         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
3983          * This is a paranoid check, because we would not have gotten the
3984          * "initialize" alive if code weren't properly loaded.  */
3985         if (iwl3945_verify_ucode(priv)) {
3986                 /* Runtime instruction load was bad;
3987                  * take it all the way back down so we can try again */
3988                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
3989                 goto restart;
3990         }
3991
3992         /* Send pointers to protocol/runtime uCode image ... init code will
3993          * load and launch runtime uCode, which will send us another "Alive"
3994          * notification. */
3995         IWL_DEBUG_INFO("Initialization Alive received.\n");
3996         if (iwl3945_set_ucode_ptrs(priv)) {
3997                 /* Runtime instruction load won't happen;
3998                  * take it all the way back down so we can try again */
3999                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
4000                 goto restart;
4001         }
4002         return;
4003
4004  restart:
4005         queue_work(priv->workqueue, &priv->restart);
4006 }
4007
4008
4009 /* temporary */
4010 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
4011                                      struct sk_buff *skb);
4012
4013 /**
4014  * iwl3945_alive_start - called after REPLY_ALIVE notification received
4015  *                   from protocol/runtime uCode (initialization uCode's
4016  *                   Alive gets handled by iwl3945_init_alive_start()).
4017  */
4018 static void iwl3945_alive_start(struct iwl_priv *priv)
4019 {
4020         int rc = 0;
4021         int thermal_spin = 0;
4022         u32 rfkill;
4023
4024         IWL_DEBUG_INFO("Runtime Alive received.\n");
4025
4026         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
4027                 /* We had an error bringing up the hardware, so take it
4028                  * all the way back down so we can try again */
4029                 IWL_DEBUG_INFO("Alive failed.\n");
4030                 goto restart;
4031         }
4032
4033         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
4034          * This is a paranoid check, because we would not have gotten the
4035          * "runtime" alive if code weren't properly loaded.  */
4036         if (iwl3945_verify_ucode(priv)) {
4037                 /* Runtime instruction load was bad;
4038                  * take it all the way back down so we can try again */
4039                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
4040                 goto restart;
4041         }
4042
4043         iwl3945_clear_stations_table(priv);
4044
4045         rc = iwl_grab_nic_access(priv);
4046         if (rc) {
4047                 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
4048                 return;
4049         }
4050
4051         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
4052         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
4053         iwl_release_nic_access(priv);
4054
4055         if (rfkill & 0x1) {
4056                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4057                 /* if RFKILL is not on, then wait for thermal
4058                  * sensor in adapter to kick in */
4059                 while (iwl3945_hw_get_temperature(priv) == 0) {
4060                         thermal_spin++;
4061                         udelay(10);
4062                 }
4063
4064                 if (thermal_spin)
4065                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
4066                                        thermal_spin * 10);
4067         } else
4068                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4069
4070         /* After the ALIVE response, we can send commands to 3945 uCode */
4071         set_bit(STATUS_ALIVE, &priv->status);
4072
4073         /* Clear out the uCode error bit if it is set */
4074         clear_bit(STATUS_FW_ERROR, &priv->status);
4075
4076         if (iwl_is_rfkill(priv))
4077                 return;
4078
4079         ieee80211_wake_queues(priv->hw);
4080
4081         priv->active_rate = priv->rates_mask;
4082         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
4083
4084         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
4085
4086         if (iwl3945_is_associated(priv)) {
4087                 struct iwl3945_rxon_cmd *active_rxon =
4088                                 (struct iwl3945_rxon_cmd *)(&priv->active39_rxon);
4089
4090                 memcpy(&priv->staging39_rxon, &priv->active39_rxon,
4091                        sizeof(priv->staging39_rxon));
4092                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4093         } else {
4094                 /* Initialize our rx_config data */
4095                 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
4096                 memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
4097         }
4098
4099         /* Configure Bluetooth device coexistence support */
4100         iwl3945_send_bt_config(priv);
4101
4102         /* Configure the adapter for unassociated operation */
4103         iwl3945_commit_rxon(priv);
4104
4105         iwl3945_reg_txpower_periodic(priv);
4106
4107         iwl3945_led_register(priv);
4108
4109         IWL_DEBUG_INFO("ALIVE processing complete.\n");
4110         set_bit(STATUS_READY, &priv->status);
4111         wake_up_interruptible(&priv->wait_command_queue);
4112
4113         if (priv->error_recovering)
4114                 iwl3945_error_recovery(priv);
4115
4116         /* reassociate for ADHOC mode */
4117         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
4118                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
4119                                                                 priv->vif);
4120                 if (beacon)
4121                         iwl3945_mac_beacon_update(priv->hw, beacon);
4122         }
4123
4124         return;
4125
4126  restart:
4127         queue_work(priv->workqueue, &priv->restart);
4128 }
4129
4130 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
4131
4132 static void __iwl3945_down(struct iwl_priv *priv)
4133 {
4134         unsigned long flags;
4135         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
4136         struct ieee80211_conf *conf = NULL;
4137
4138         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
4139
4140         conf = ieee80211_get_hw_conf(priv->hw);
4141
4142         if (!exit_pending)
4143                 set_bit(STATUS_EXIT_PENDING, &priv->status);
4144
4145         iwl3945_led_unregister(priv);
4146         iwl3945_clear_stations_table(priv);
4147
4148         /* Unblock any waiting calls */
4149         wake_up_interruptible_all(&priv->wait_command_queue);
4150
4151         /* Wipe out the EXIT_PENDING status bit if we are not actually
4152          * exiting the module */
4153         if (!exit_pending)
4154                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
4155
4156         /* stop and reset the on-board processor */
4157         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4158
4159         /* tell the device to stop sending interrupts */
4160         spin_lock_irqsave(&priv->lock, flags);
4161         iwl3945_disable_interrupts(priv);
4162         spin_unlock_irqrestore(&priv->lock, flags);
4163         iwl_synchronize_irq(priv);
4164
4165         if (priv->mac80211_registered)
4166                 ieee80211_stop_queues(priv->hw);
4167
4168         /* If we have not previously called iwl3945_init() then
4169          * clear all bits but the RF Kill and SUSPEND bits and return */
4170         if (!iwl_is_init(priv)) {
4171                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4172                                         STATUS_RF_KILL_HW |
4173                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4174                                         STATUS_RF_KILL_SW |
4175                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4176                                         STATUS_GEO_CONFIGURED |
4177                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4178                                         STATUS_IN_SUSPEND |
4179                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
4180                                         STATUS_EXIT_PENDING;
4181                 goto exit;
4182         }
4183
4184         /* ...otherwise clear out all the status bits but the RF Kill and
4185          * SUSPEND bits and continue taking the NIC down. */
4186         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4187                                 STATUS_RF_KILL_HW |
4188                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4189                                 STATUS_RF_KILL_SW |
4190                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4191                                 STATUS_GEO_CONFIGURED |
4192                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4193                                 STATUS_IN_SUSPEND |
4194                         test_bit(STATUS_FW_ERROR, &priv->status) <<
4195                                 STATUS_FW_ERROR |
4196                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
4197                                 STATUS_EXIT_PENDING;
4198
4199         priv->cfg->ops->lib->apm_ops.reset(priv);
4200         spin_lock_irqsave(&priv->lock, flags);
4201         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4202         spin_unlock_irqrestore(&priv->lock, flags);
4203
4204         iwl3945_hw_txq_ctx_stop(priv);
4205         iwl3945_hw_rxq_stop(priv);
4206
4207         spin_lock_irqsave(&priv->lock, flags);
4208         if (!iwl_grab_nic_access(priv)) {
4209                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
4210                                          APMG_CLK_VAL_DMA_CLK_RQT);
4211                 iwl_release_nic_access(priv);
4212         }
4213         spin_unlock_irqrestore(&priv->lock, flags);
4214
4215         udelay(5);
4216
4217         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
4218                 priv->cfg->ops->lib->apm_ops.stop(priv);
4219         else
4220                 priv->cfg->ops->lib->apm_ops.reset(priv);
4221
4222  exit:
4223         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
4224
4225         if (priv->ibss_beacon)
4226                 dev_kfree_skb(priv->ibss_beacon);
4227         priv->ibss_beacon = NULL;
4228
4229         /* clear out any free frames */
4230         iwl3945_clear_free_frames(priv);
4231 }
4232
4233 static void iwl3945_down(struct iwl_priv *priv)
4234 {
4235         mutex_lock(&priv->mutex);
4236         __iwl3945_down(priv);
4237         mutex_unlock(&priv->mutex);
4238
4239         iwl3945_cancel_deferred_work(priv);
4240 }
4241
4242 #define MAX_HW_RESTARTS 5
4243
4244 static int __iwl3945_up(struct iwl_priv *priv)
4245 {
4246         int rc, i;
4247
4248         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4249                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
4250                 return -EIO;
4251         }
4252
4253         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
4254                 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
4255                             "parameter)\n");
4256                 return -ENODEV;
4257         }
4258
4259         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
4260                 IWL_ERR(priv, "ucode not available for device bring up\n");
4261                 return -EIO;
4262         }
4263
4264         /* If platform's RF_KILL switch is NOT set to KILL */
4265         if (iwl_read32(priv, CSR_GP_CNTRL) &
4266                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4267                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4268         else {
4269                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4270                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
4271                         IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
4272                         return -ENODEV;
4273                 }
4274         }
4275
4276         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4277
4278         rc = iwl3945_hw_nic_init(priv);
4279         if (rc) {
4280                 IWL_ERR(priv, "Unable to int nic\n");
4281                 return rc;
4282         }
4283
4284         /* make sure rfkill handshake bits are cleared */
4285         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4286         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4287                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4288
4289         /* clear (again), then enable host interrupts */
4290         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
4291         iwl3945_enable_interrupts(priv);
4292
4293         /* really make sure rfkill handshake bits are cleared */
4294         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4295         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
4296
4297         /* Copy original ucode data image from disk into backup cache.
4298          * This will be used to initialize the on-board processor's
4299          * data SRAM for a clean start when the runtime program first loads. */
4300         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
4301                priv->ucode_data.len);
4302
4303         /* We return success when we resume from suspend and rf_kill is on. */
4304         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
4305                 return 0;
4306
4307         for (i = 0; i < MAX_HW_RESTARTS; i++) {
4308
4309                 iwl3945_clear_stations_table(priv);
4310
4311                 /* load bootstrap state machine,
4312                  * load bootstrap program into processor's memory,
4313                  * prepare to load the "initialize" uCode */
4314                 priv->cfg->ops->lib->load_ucode(priv);
4315
4316                 if (rc) {
4317                         IWL_ERR(priv,
4318                                 "Unable to set up bootstrap uCode: %d\n", rc);
4319                         continue;
4320                 }
4321
4322                 /* start card; "initialize" will load runtime ucode */
4323                 iwl3945_nic_start(priv);
4324
4325                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
4326
4327                 return 0;
4328         }
4329
4330         set_bit(STATUS_EXIT_PENDING, &priv->status);
4331         __iwl3945_down(priv);
4332         clear_bit(STATUS_EXIT_PENDING, &priv->status);
4333
4334         /* tried to restart and config the device for as long as our
4335          * patience could withstand */
4336         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
4337         return -EIO;
4338 }
4339
4340
4341 /*****************************************************************************
4342  *
4343  * Workqueue callbacks
4344  *
4345  *****************************************************************************/
4346
4347 static void iwl3945_bg_init_alive_start(struct work_struct *data)
4348 {
4349         struct iwl_priv *priv =
4350             container_of(data, struct iwl_priv, init_alive_start.work);
4351
4352         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4353                 return;
4354
4355         mutex_lock(&priv->mutex);
4356         iwl3945_init_alive_start(priv);
4357         mutex_unlock(&priv->mutex);
4358 }
4359
4360 static void iwl3945_bg_alive_start(struct work_struct *data)
4361 {
4362         struct iwl_priv *priv =
4363             container_of(data, struct iwl_priv, alive_start.work);
4364
4365         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4366                 return;
4367
4368         mutex_lock(&priv->mutex);
4369         iwl3945_alive_start(priv);
4370         mutex_unlock(&priv->mutex);
4371 }
4372
4373 static void iwl3945_rfkill_poll(struct work_struct *data)
4374 {
4375         struct iwl_priv *priv =
4376             container_of(data, struct iwl_priv, rfkill_poll.work);
4377         unsigned long status = priv->status;
4378
4379         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4380                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4381         else
4382                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4383
4384         if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
4385                 queue_work(priv->workqueue, &priv->rf_kill);
4386
4387         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4388                            round_jiffies_relative(2 * HZ));
4389
4390 }
4391
4392 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
4393 static void iwl3945_bg_request_scan(struct work_struct *data)
4394 {
4395         struct iwl_priv *priv =
4396             container_of(data, struct iwl_priv, request_scan);
4397         struct iwl_host_cmd cmd = {
4398                 .id = REPLY_SCAN_CMD,
4399                 .len = sizeof(struct iwl3945_scan_cmd),
4400                 .meta.flags = CMD_SIZE_HUGE,
4401         };
4402         int rc = 0;
4403         struct iwl3945_scan_cmd *scan;
4404         struct ieee80211_conf *conf = NULL;
4405         u8 n_probes = 2;
4406         enum ieee80211_band band;
4407         DECLARE_SSID_BUF(ssid);
4408
4409         conf = ieee80211_get_hw_conf(priv->hw);
4410
4411         mutex_lock(&priv->mutex);
4412
4413         if (!iwl_is_ready(priv)) {
4414                 IWL_WARN(priv, "request scan called when driver not ready.\n");
4415                 goto done;
4416         }
4417
4418         /* Make sure the scan wasn't canceled before this queued work
4419          * was given the chance to run... */
4420         if (!test_bit(STATUS_SCANNING, &priv->status))
4421                 goto done;
4422
4423         /* This should never be called or scheduled if there is currently
4424          * a scan active in the hardware. */
4425         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
4426                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
4427                                "Ignoring second request.\n");
4428                 rc = -EIO;
4429                 goto done;
4430         }
4431
4432         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4433                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
4434                 goto done;
4435         }
4436
4437         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4438                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
4439                 goto done;
4440         }
4441
4442         if (iwl_is_rfkill(priv)) {
4443                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
4444                 goto done;
4445         }
4446
4447         if (!test_bit(STATUS_READY, &priv->status)) {
4448                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
4449                 goto done;
4450         }
4451
4452         if (!priv->scan_bands) {
4453                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
4454                 goto done;
4455         }
4456
4457         if (!priv->scan) {
4458                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
4459                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
4460                 if (!priv->scan) {
4461                         rc = -ENOMEM;
4462                         goto done;
4463                 }
4464         }
4465         scan = priv->scan;
4466         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
4467
4468         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
4469         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
4470
4471         if (iwl3945_is_associated(priv)) {
4472                 u16 interval = 0;
4473                 u32 extra;
4474                 u32 suspend_time = 100;
4475                 u32 scan_suspend_time = 100;
4476                 unsigned long flags;
4477
4478                 IWL_DEBUG_INFO("Scanning while associated...\n");
4479
4480                 spin_lock_irqsave(&priv->lock, flags);
4481                 interval = priv->beacon_int;
4482                 spin_unlock_irqrestore(&priv->lock, flags);
4483
4484                 scan->suspend_time = 0;
4485                 scan->max_out_time = cpu_to_le32(200 * 1024);
4486                 if (!interval)
4487                         interval = suspend_time;
4488                 /*
4489                  * suspend time format:
4490                  *  0-19: beacon interval in usec (time before exec.)
4491                  * 20-23: 0
4492                  * 24-31: number of beacons (suspend between channels)
4493                  */
4494
4495                 extra = (suspend_time / interval) << 24;
4496                 scan_suspend_time = 0xFF0FFFFF &
4497                     (extra | ((suspend_time % interval) * 1024));
4498
4499                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
4500                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
4501                                scan_suspend_time, interval);
4502         }
4503
4504         /* We should add the ability for user to lock to PASSIVE ONLY */
4505         if (priv->one_direct_scan) {
4506                 IWL_DEBUG_SCAN
4507                     ("Kicking off one direct scan for '%s'\n",
4508                      print_ssid(ssid, priv->direct_ssid,
4509                                 priv->direct_ssid_len));
4510                 scan->direct_scan[0].id = WLAN_EID_SSID;
4511                 scan->direct_scan[0].len = priv->direct_ssid_len;
4512                 memcpy(scan->direct_scan[0].ssid,
4513                        priv->direct_ssid, priv->direct_ssid_len);
4514                 n_probes++;
4515         } else
4516                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
4517
4518         /* We don't build a direct scan probe request; the uCode will do
4519          * that based on the direct_mask added to each channel entry */
4520         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
4521         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
4522         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
4523
4524         /* flags + rate selection */
4525
4526         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
4527                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
4528                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
4529                 scan->good_CRC_th = 0;
4530                 band = IEEE80211_BAND_2GHZ;
4531         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
4532                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
4533                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
4534                 band = IEEE80211_BAND_5GHZ;
4535         } else {
4536                 IWL_WARN(priv, "Invalid scan band count\n");
4537                 goto done;
4538         }
4539
4540         scan->tx_cmd.len = cpu_to_le16(
4541                 iwl_fill_probe_req(priv, band,
4542                                    (struct ieee80211_mgmt *)scan->data,
4543                                    IWL_MAX_SCAN_SIZE - sizeof(*scan)));
4544
4545         /* select Rx antennas */
4546         scan->flags |= iwl3945_get_antenna_flags(priv);
4547
4548         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
4549                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
4550
4551         scan->channel_count =
4552                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
4553                                               n_probes,
4554                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4555
4556         if (scan->channel_count == 0) {
4557                 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
4558                 goto done;
4559         }
4560
4561         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
4562             scan->channel_count * sizeof(struct iwl3945_scan_channel);
4563         cmd.data = scan;
4564         scan->len = cpu_to_le16(cmd.len);
4565
4566         set_bit(STATUS_SCAN_HW, &priv->status);
4567         rc = iwl_send_cmd_sync(priv, &cmd);
4568         if (rc)
4569                 goto done;
4570
4571         queue_delayed_work(priv->workqueue, &priv->scan_check,
4572                            IWL_SCAN_CHECK_WATCHDOG);
4573
4574         mutex_unlock(&priv->mutex);
4575         return;
4576
4577  done:
4578         /* can not perform scan make sure we clear scanning
4579          * bits from status so next scan request can be performed.
4580          * if we dont clear scanning status bit here all next scan
4581          * will fail
4582         */
4583         clear_bit(STATUS_SCAN_HW, &priv->status);
4584         clear_bit(STATUS_SCANNING, &priv->status);
4585
4586         /* inform mac80211 scan aborted */
4587         queue_work(priv->workqueue, &priv->scan_completed);
4588         mutex_unlock(&priv->mutex);
4589 }
4590
4591 static void iwl3945_bg_up(struct work_struct *data)
4592 {
4593         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
4594
4595         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4596                 return;
4597
4598         mutex_lock(&priv->mutex);
4599         __iwl3945_up(priv);
4600         mutex_unlock(&priv->mutex);
4601         iwl_rfkill_set_hw_state(priv);
4602 }
4603
4604 static void iwl3945_bg_restart(struct work_struct *data)
4605 {
4606         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
4607
4608         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4609                 return;
4610
4611         iwl3945_down(priv);
4612         queue_work(priv->workqueue, &priv->up);
4613 }
4614
4615 static void iwl3945_bg_rx_replenish(struct work_struct *data)
4616 {
4617         struct iwl_priv *priv =
4618             container_of(data, struct iwl_priv, rx_replenish);
4619
4620         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4621                 return;
4622
4623         mutex_lock(&priv->mutex);
4624         iwl3945_rx_replenish(priv);
4625         mutex_unlock(&priv->mutex);
4626 }
4627
4628 #define IWL_DELAY_NEXT_SCAN (HZ*2)
4629
4630 static void iwl3945_post_associate(struct iwl_priv *priv)
4631 {
4632         int rc = 0;
4633         struct ieee80211_conf *conf = NULL;
4634
4635         if (priv->iw_mode == NL80211_IFTYPE_AP) {
4636                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
4637                 return;
4638         }
4639
4640
4641         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
4642                         priv->assoc_id, priv->active39_rxon.bssid_addr);
4643
4644         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4645                 return;
4646
4647         if (!priv->vif || !priv->is_open)
4648                 return;
4649
4650         iwl_scan_cancel_timeout(priv, 200);
4651
4652         conf = ieee80211_get_hw_conf(priv->hw);
4653
4654         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4655         iwl3945_commit_rxon(priv);
4656
4657         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
4658         iwl3945_setup_rxon_timing(priv);
4659         rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4660                               sizeof(priv->rxon_timing), &priv->rxon_timing);
4661         if (rc)
4662                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
4663                             "Attempting to continue.\n");
4664
4665         priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4666
4667         priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4668
4669         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
4670                         priv->assoc_id, priv->beacon_int);
4671
4672         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4673                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4674         else
4675                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4676
4677         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4678                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
4679                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
4680                 else
4681                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4682
4683                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
4684                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4685
4686         }
4687
4688         iwl3945_commit_rxon(priv);
4689
4690         switch (priv->iw_mode) {
4691         case NL80211_IFTYPE_STATION:
4692                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
4693                 break;
4694
4695         case NL80211_IFTYPE_ADHOC:
4696
4697                 priv->assoc_id = 1;
4698                 iwl3945_add_station(priv, priv->bssid, 0, 0);
4699                 iwl3945_sync_sta(priv, IWL_STA_ID,
4700                                  (priv->band == IEEE80211_BAND_5GHZ) ?
4701                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
4702                                  CMD_ASYNC);
4703                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
4704                 iwl3945_send_beacon_cmd(priv);
4705
4706                 break;
4707
4708         default:
4709                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
4710                            __func__, priv->iw_mode);
4711                 break;
4712         }
4713
4714         iwl3945_activate_qos(priv, 0);
4715
4716         /* we have just associated, don't start scan too early */
4717         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
4718 }
4719
4720 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
4721
4722 /*****************************************************************************
4723  *
4724  * mac80211 entry point functions
4725  *
4726  *****************************************************************************/
4727
4728 #define UCODE_READY_TIMEOUT     (2 * HZ)
4729
4730 static int iwl3945_mac_start(struct ieee80211_hw *hw)
4731 {
4732         struct iwl_priv *priv = hw->priv;
4733         int ret;
4734
4735         IWL_DEBUG_MAC80211("enter\n");
4736
4737         /* we should be verifying the device is ready to be opened */
4738         mutex_lock(&priv->mutex);
4739
4740         memset(&priv->staging39_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
4741         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4742          * ucode filename and max sizes are card-specific. */
4743
4744         if (!priv->ucode_code.len) {
4745                 ret = iwl3945_read_ucode(priv);
4746                 if (ret) {
4747                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
4748                         mutex_unlock(&priv->mutex);
4749                         goto out_release_irq;
4750                 }
4751         }
4752
4753         ret = __iwl3945_up(priv);
4754
4755         mutex_unlock(&priv->mutex);
4756
4757         iwl_rfkill_set_hw_state(priv);
4758
4759         if (ret)
4760                 goto out_release_irq;
4761
4762         IWL_DEBUG_INFO("Start UP work.\n");
4763
4764         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4765                 return 0;
4766
4767         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4768          * mac80211 will not be run successfully. */
4769         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4770                         test_bit(STATUS_READY, &priv->status),
4771                         UCODE_READY_TIMEOUT);
4772         if (!ret) {
4773                 if (!test_bit(STATUS_READY, &priv->status)) {
4774                         IWL_ERR(priv,
4775                                 "Wait for START_ALIVE timeout after %dms.\n",
4776                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
4777                         ret = -ETIMEDOUT;
4778                         goto out_release_irq;
4779                 }
4780         }
4781
4782         /* ucode is running and will send rfkill notifications,
4783          * no need to poll the killswitch state anymore */
4784         cancel_delayed_work(&priv->rfkill_poll);
4785
4786         priv->is_open = 1;
4787         IWL_DEBUG_MAC80211("leave\n");
4788         return 0;
4789
4790 out_release_irq:
4791         priv->is_open = 0;
4792         IWL_DEBUG_MAC80211("leave - failed\n");
4793         return ret;
4794 }
4795
4796 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
4797 {
4798         struct iwl_priv *priv = hw->priv;
4799
4800         IWL_DEBUG_MAC80211("enter\n");
4801
4802         if (!priv->is_open) {
4803                 IWL_DEBUG_MAC80211("leave - skip\n");
4804                 return;
4805         }
4806
4807         priv->is_open = 0;
4808
4809         if (iwl_is_ready_rf(priv)) {
4810                 /* stop mac, cancel any scan request and clear
4811                  * RXON_FILTER_ASSOC_MSK BIT
4812                  */
4813                 mutex_lock(&priv->mutex);
4814                 iwl_scan_cancel_timeout(priv, 100);
4815                 mutex_unlock(&priv->mutex);
4816         }
4817
4818         iwl3945_down(priv);
4819
4820         flush_workqueue(priv->workqueue);
4821
4822         /* start polling the killswitch state again */
4823         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4824                            round_jiffies_relative(2 * HZ));
4825
4826         IWL_DEBUG_MAC80211("leave\n");
4827 }
4828
4829 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4830 {
4831         struct iwl_priv *priv = hw->priv;
4832
4833         IWL_DEBUG_MAC80211("enter\n");
4834
4835         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4836                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
4837
4838         if (iwl3945_tx_skb(priv, skb))
4839                 dev_kfree_skb_any(skb);
4840
4841         IWL_DEBUG_MAC80211("leave\n");
4842         return NETDEV_TX_OK;
4843 }
4844
4845 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
4846                                  struct ieee80211_if_init_conf *conf)
4847 {
4848         struct iwl_priv *priv = hw->priv;
4849         unsigned long flags;
4850
4851         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
4852
4853         if (priv->vif) {
4854                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
4855                 return -EOPNOTSUPP;
4856         }
4857
4858         spin_lock_irqsave(&priv->lock, flags);
4859         priv->vif = conf->vif;
4860         priv->iw_mode = conf->type;
4861
4862         spin_unlock_irqrestore(&priv->lock, flags);
4863
4864         mutex_lock(&priv->mutex);
4865
4866         if (conf->mac_addr) {
4867                 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
4868                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4869         }
4870
4871         if (iwl_is_ready(priv))
4872                 iwl3945_set_mode(priv, conf->type);
4873
4874         mutex_unlock(&priv->mutex);
4875
4876         IWL_DEBUG_MAC80211("leave\n");
4877         return 0;
4878 }
4879
4880 /**
4881  * iwl3945_mac_config - mac80211 config callback
4882  *
4883  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4884  * be set inappropriately and the driver currently sets the hardware up to
4885  * use it whenever needed.
4886  */
4887 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
4888 {
4889         struct iwl_priv *priv = hw->priv;
4890         const struct iwl_channel_info *ch_info;
4891         struct ieee80211_conf *conf = &hw->conf;
4892         unsigned long flags;
4893         int ret = 0;
4894
4895         mutex_lock(&priv->mutex);
4896         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
4897
4898         if (!iwl_is_ready(priv)) {
4899                 IWL_DEBUG_MAC80211("leave - not ready\n");
4900                 ret = -EIO;
4901                 goto out;
4902         }
4903
4904         if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
4905                      test_bit(STATUS_SCANNING, &priv->status))) {
4906                 IWL_DEBUG_MAC80211("leave - scanning\n");
4907                 set_bit(STATUS_CONF_PENDING, &priv->status);
4908                 mutex_unlock(&priv->mutex);
4909                 return 0;
4910         }
4911
4912         spin_lock_irqsave(&priv->lock, flags);
4913
4914         ch_info = iwl_get_channel_info(priv, conf->channel->band,
4915                                        conf->channel->hw_value);
4916         if (!is_channel_valid(ch_info)) {
4917                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
4918                                conf->channel->hw_value, conf->channel->band);
4919                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
4920                 spin_unlock_irqrestore(&priv->lock, flags);
4921                 ret = -EINVAL;
4922                 goto out;
4923         }
4924
4925         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
4926
4927         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
4928
4929         /* The list of supported rates and rate mask can be different
4930          * for each phymode; since the phymode may have changed, reset
4931          * the rate mask to what mac80211 lists */
4932         iwl3945_set_rate(priv);
4933
4934         spin_unlock_irqrestore(&priv->lock, flags);
4935
4936 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4937         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4938                 iwl3945_hw_channel_switch(priv, conf->channel);
4939                 goto out;
4940         }
4941 #endif
4942
4943         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
4944
4945         if (!conf->radio_enabled) {
4946                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
4947                 goto out;
4948         }
4949
4950         if (iwl_is_rfkill(priv)) {
4951                 IWL_DEBUG_MAC80211("leave - RF kill\n");
4952                 ret = -EIO;
4953                 goto out;
4954         }
4955
4956         iwl3945_set_rate(priv);
4957
4958         if (memcmp(&priv->active39_rxon,
4959                    &priv->staging39_rxon, sizeof(priv->staging39_rxon)))
4960                 iwl3945_commit_rxon(priv);
4961         else
4962                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
4963
4964         IWL_DEBUG_MAC80211("leave\n");
4965
4966 out:
4967         clear_bit(STATUS_CONF_PENDING, &priv->status);
4968         mutex_unlock(&priv->mutex);
4969         return ret;
4970 }
4971
4972 static void iwl3945_config_ap(struct iwl_priv *priv)
4973 {
4974         int rc = 0;
4975
4976         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4977                 return;
4978
4979         /* The following should be done only at AP bring up */
4980         if (!(iwl3945_is_associated(priv))) {
4981
4982                 /* RXON - unassoc (to set timing command) */
4983                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4984                 iwl3945_commit_rxon(priv);
4985
4986                 /* RXON Timing */
4987                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
4988                 iwl3945_setup_rxon_timing(priv);
4989                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4990                                       sizeof(priv->rxon_timing),
4991                                       &priv->rxon_timing);
4992                 if (rc)
4993                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
4994                                         "Attempting to continue.\n");
4995
4996                 /* FIXME: what should be the assoc_id for AP? */
4997                 priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4998                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4999                         priv->staging39_rxon.flags |=
5000                                 RXON_FLG_SHORT_PREAMBLE_MSK;
5001                 else
5002                         priv->staging39_rxon.flags &=
5003                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
5004
5005                 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5006                         if (priv->assoc_capability &
5007                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
5008                                 priv->staging39_rxon.flags |=
5009                                         RXON_FLG_SHORT_SLOT_MSK;
5010                         else
5011                                 priv->staging39_rxon.flags &=
5012                                         ~RXON_FLG_SHORT_SLOT_MSK;
5013
5014                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
5015                                 priv->staging39_rxon.flags &=
5016                                         ~RXON_FLG_SHORT_SLOT_MSK;
5017                 }
5018                 /* restore RXON assoc */
5019                 priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5020                 iwl3945_commit_rxon(priv);
5021                 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
5022         }
5023         iwl3945_send_beacon_cmd(priv);
5024
5025         /* FIXME - we need to add code here to detect a totally new
5026          * configuration, reset the AP, unassoc, rxon timing, assoc,
5027          * clear sta table, add BCAST sta... */
5028 }
5029
5030 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
5031                                         struct ieee80211_vif *vif,
5032                                         struct ieee80211_if_conf *conf)
5033 {
5034         struct iwl_priv *priv = hw->priv;
5035         int rc;
5036
5037         if (conf == NULL)
5038                 return -EIO;
5039
5040         if (priv->vif != vif) {
5041                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
5042                 return 0;
5043         }
5044
5045         /* handle this temporarily here */
5046         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
5047             conf->changed & IEEE80211_IFCC_BEACON) {
5048                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
5049                 if (!beacon)
5050                         return -ENOMEM;
5051                 mutex_lock(&priv->mutex);
5052                 rc = iwl3945_mac_beacon_update(hw, beacon);
5053                 mutex_unlock(&priv->mutex);
5054                 if (rc)
5055                         return rc;
5056         }
5057
5058         if (!iwl_is_alive(priv))
5059                 return -EAGAIN;
5060
5061         mutex_lock(&priv->mutex);
5062
5063         if (conf->bssid)
5064                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
5065
5066 /*
5067  * very dubious code was here; the probe filtering flag is never set:
5068  *
5069         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
5070             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
5071  */
5072
5073         if (priv->iw_mode == NL80211_IFTYPE_AP) {
5074                 if (!conf->bssid) {
5075                         conf->bssid = priv->mac_addr;
5076                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
5077                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
5078                                            conf->bssid);
5079                 }
5080                 if (priv->ibss_beacon)
5081                         dev_kfree_skb(priv->ibss_beacon);
5082
5083                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
5084         }
5085
5086         if (iwl_is_rfkill(priv))
5087                 goto done;
5088
5089         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
5090             !is_multicast_ether_addr(conf->bssid)) {
5091                 /* If there is currently a HW scan going on in the background
5092                  * then we need to cancel it else the RXON below will fail. */
5093                 if (iwl_scan_cancel_timeout(priv, 100)) {
5094                         IWL_WARN(priv, "Aborted scan still in progress "
5095                                     "after 100ms\n");
5096                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
5097                         mutex_unlock(&priv->mutex);
5098                         return -EAGAIN;
5099                 }
5100                 memcpy(priv->staging39_rxon.bssid_addr, conf->bssid, ETH_ALEN);
5101
5102                 /* TODO: Audit driver for usage of these members and see
5103                  * if mac80211 deprecates them (priv->bssid looks like it
5104                  * shouldn't be there, but I haven't scanned the IBSS code
5105                  * to verify) - jpk */
5106                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
5107
5108                 if (priv->iw_mode == NL80211_IFTYPE_AP)
5109                         iwl3945_config_ap(priv);
5110                 else {
5111                         rc = iwl3945_commit_rxon(priv);
5112                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
5113                                 iwl3945_add_station(priv,
5114                                         priv->active39_rxon.bssid_addr, 1, 0);
5115                 }
5116
5117         } else {
5118                 iwl_scan_cancel_timeout(priv, 100);
5119                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5120                 iwl3945_commit_rxon(priv);
5121         }
5122
5123  done:
5124         IWL_DEBUG_MAC80211("leave\n");
5125         mutex_unlock(&priv->mutex);
5126
5127         return 0;
5128 }
5129
5130 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
5131                                  unsigned int changed_flags,
5132                                  unsigned int *total_flags,
5133                                  int mc_count, struct dev_addr_list *mc_list)
5134 {
5135         struct iwl_priv *priv = hw->priv;
5136         __le32 *filter_flags = &priv->staging39_rxon.filter_flags;
5137
5138         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
5139                         changed_flags, *total_flags);
5140
5141         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
5142                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
5143                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
5144                 else
5145                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
5146         }
5147         if (changed_flags & FIF_ALLMULTI) {
5148                 if (*total_flags & FIF_ALLMULTI)
5149                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
5150                 else
5151                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
5152         }
5153         if (changed_flags & FIF_CONTROL) {
5154                 if (*total_flags & FIF_CONTROL)
5155                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
5156                 else
5157                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
5158         }
5159         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5160                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
5161                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
5162                 else
5163                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
5164         }
5165
5166         /* We avoid iwl_commit_rxon here to commit the new filter flags
5167          * since mac80211 will call ieee80211_hw_config immediately.
5168          * (mc_list is not supported at this time). Otherwise, we need to
5169          * queue a background iwl_commit_rxon work.
5170          */
5171
5172         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
5173                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
5174 }
5175
5176 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
5177                                      struct ieee80211_if_init_conf *conf)
5178 {
5179         struct iwl_priv *priv = hw->priv;
5180
5181         IWL_DEBUG_MAC80211("enter\n");
5182
5183         mutex_lock(&priv->mutex);
5184
5185         if (iwl_is_ready_rf(priv)) {
5186                 iwl_scan_cancel_timeout(priv, 100);
5187                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5188                 iwl3945_commit_rxon(priv);
5189         }
5190         if (priv->vif == conf->vif) {
5191                 priv->vif = NULL;
5192                 memset(priv->bssid, 0, ETH_ALEN);
5193         }
5194         mutex_unlock(&priv->mutex);
5195
5196         IWL_DEBUG_MAC80211("leave\n");
5197 }
5198
5199 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
5200
5201 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
5202                                      struct ieee80211_vif *vif,
5203                                      struct ieee80211_bss_conf *bss_conf,
5204                                      u32 changes)
5205 {
5206         struct iwl_priv *priv = hw->priv;
5207
5208         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
5209
5210         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
5211                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
5212                                    bss_conf->use_short_preamble);
5213                 if (bss_conf->use_short_preamble)
5214                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5215                 else
5216                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5217         }
5218
5219         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
5220                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
5221                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
5222                         priv->staging39_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
5223                 else
5224                         priv->staging39_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
5225         }
5226
5227         if (changes & BSS_CHANGED_ASSOC) {
5228                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
5229                 /* This should never happen as this function should
5230                  * never be called from interrupt context. */
5231                 if (WARN_ON_ONCE(in_interrupt()))
5232                         return;
5233                 if (bss_conf->assoc) {
5234                         priv->assoc_id = bss_conf->aid;
5235                         priv->beacon_int = bss_conf->beacon_int;
5236                         priv->timestamp = bss_conf->timestamp;
5237                         priv->assoc_capability = bss_conf->assoc_capability;
5238                         priv->power_data.dtim_period = bss_conf->dtim_period;
5239                         priv->next_scan_jiffies = jiffies +
5240                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
5241                         mutex_lock(&priv->mutex);
5242                         iwl3945_post_associate(priv);
5243                         mutex_unlock(&priv->mutex);
5244                 } else {
5245                         priv->assoc_id = 0;
5246                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
5247                 }
5248         } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
5249                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
5250                         iwl3945_send_rxon_assoc(priv);
5251         }
5252
5253 }
5254
5255 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
5256 {
5257         int rc = 0;
5258         unsigned long flags;
5259         struct iwl_priv *priv = hw->priv;
5260         DECLARE_SSID_BUF(ssid_buf);
5261
5262         IWL_DEBUG_MAC80211("enter\n");
5263
5264         mutex_lock(&priv->mutex);
5265         spin_lock_irqsave(&priv->lock, flags);
5266
5267         if (!iwl_is_ready_rf(priv)) {
5268                 rc = -EIO;
5269                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
5270                 goto out_unlock;
5271         }
5272
5273         /* we don't schedule scan within next_scan_jiffies period */
5274         if (priv->next_scan_jiffies &&
5275                         time_after(priv->next_scan_jiffies, jiffies)) {
5276                 rc = -EAGAIN;
5277                 goto out_unlock;
5278         }
5279         /* if we just finished scan ask for delay for a broadcast scan */
5280         if ((len == 0) && priv->last_scan_jiffies &&
5281             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
5282                        jiffies)) {
5283                 rc = -EAGAIN;
5284                 goto out_unlock;
5285         }
5286         if (len) {
5287                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
5288                                print_ssid(ssid_buf, ssid, len), (int)len);
5289
5290                 priv->one_direct_scan = 1;
5291                 priv->direct_ssid_len = (u8)
5292                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
5293                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
5294         } else
5295                 priv->one_direct_scan = 0;
5296
5297         rc = iwl3945_scan_initiate(priv);
5298
5299         IWL_DEBUG_MAC80211("leave\n");
5300
5301 out_unlock:
5302         spin_unlock_irqrestore(&priv->lock, flags);
5303         mutex_unlock(&priv->mutex);
5304
5305         return rc;
5306 }
5307
5308 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
5309                                struct ieee80211_vif *vif,
5310                                struct ieee80211_sta *sta,
5311                                struct ieee80211_key_conf *key)
5312 {
5313         struct iwl_priv *priv = hw->priv;
5314         const u8 *addr;
5315         int ret;
5316         u8 sta_id;
5317
5318         IWL_DEBUG_MAC80211("enter\n");
5319
5320         if (iwl3945_mod_params.sw_crypto) {
5321                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
5322                 return -EOPNOTSUPP;
5323         }
5324
5325         addr = sta ? sta->addr : iwl_bcast_addr;
5326         sta_id = iwl3945_hw_find_station(priv, addr);
5327         if (sta_id == IWL_INVALID_STATION) {
5328                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
5329                                    addr);
5330                 return -EINVAL;
5331         }
5332
5333         mutex_lock(&priv->mutex);
5334
5335         iwl_scan_cancel_timeout(priv, 100);
5336
5337         switch (cmd) {
5338         case  SET_KEY:
5339                 ret = iwl3945_update_sta_key_info(priv, key, sta_id);
5340                 if (!ret) {
5341                         iwl3945_set_rxon_hwcrypto(priv, 1);
5342                         iwl3945_commit_rxon(priv);
5343                         key->hw_key_idx = sta_id;
5344                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
5345                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
5346                 }
5347                 break;
5348         case DISABLE_KEY:
5349                 ret = iwl3945_clear_sta_key_info(priv, sta_id);
5350                 if (!ret) {
5351                         iwl3945_set_rxon_hwcrypto(priv, 0);
5352                         iwl3945_commit_rxon(priv);
5353                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
5354                 }
5355                 break;
5356         default:
5357                 ret = -EINVAL;
5358         }
5359
5360         IWL_DEBUG_MAC80211("leave\n");
5361         mutex_unlock(&priv->mutex);
5362
5363         return ret;
5364 }
5365
5366 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
5367                            const struct ieee80211_tx_queue_params *params)
5368 {
5369         struct iwl_priv *priv = hw->priv;
5370         unsigned long flags;
5371         int q;
5372
5373         IWL_DEBUG_MAC80211("enter\n");
5374
5375         if (!iwl_is_ready_rf(priv)) {
5376                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5377                 return -EIO;
5378         }
5379
5380         if (queue >= AC_NUM) {
5381                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
5382                 return 0;
5383         }
5384
5385         q = AC_NUM - 1 - queue;
5386
5387         spin_lock_irqsave(&priv->lock, flags);
5388
5389         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
5390         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
5391         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
5392         priv->qos_data.def_qos_parm.ac[q].edca_txop =
5393                         cpu_to_le16((params->txop * 32));
5394
5395         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
5396         priv->qos_data.qos_active = 1;
5397
5398         spin_unlock_irqrestore(&priv->lock, flags);
5399
5400         mutex_lock(&priv->mutex);
5401         if (priv->iw_mode == NL80211_IFTYPE_AP)
5402                 iwl3945_activate_qos(priv, 1);
5403         else if (priv->assoc_id && iwl3945_is_associated(priv))
5404                 iwl3945_activate_qos(priv, 0);
5405
5406         mutex_unlock(&priv->mutex);
5407
5408         IWL_DEBUG_MAC80211("leave\n");
5409         return 0;
5410 }
5411
5412 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
5413                                 struct ieee80211_tx_queue_stats *stats)
5414 {
5415         struct iwl_priv *priv = hw->priv;
5416         int i, avail;
5417         struct iwl_tx_queue *txq;
5418         struct iwl_queue *q;
5419         unsigned long flags;
5420
5421         IWL_DEBUG_MAC80211("enter\n");
5422
5423         if (!iwl_is_ready_rf(priv)) {
5424                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5425                 return -EIO;
5426         }
5427
5428         spin_lock_irqsave(&priv->lock, flags);
5429
5430         for (i = 0; i < AC_NUM; i++) {
5431                 txq = &priv->txq[i];
5432                 q = &txq->q;
5433                 avail = iwl_queue_space(q);
5434
5435                 stats[i].len = q->n_window - avail;
5436                 stats[i].limit = q->n_window - q->high_mark;
5437                 stats[i].count = q->n_window;
5438
5439         }
5440         spin_unlock_irqrestore(&priv->lock, flags);
5441
5442         IWL_DEBUG_MAC80211("leave\n");
5443
5444         return 0;
5445 }
5446
5447 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
5448 {
5449         struct iwl_priv *priv = hw->priv;
5450         unsigned long flags;
5451
5452         mutex_lock(&priv->mutex);
5453         IWL_DEBUG_MAC80211("enter\n");
5454
5455         iwl_reset_qos(priv);
5456
5457         spin_lock_irqsave(&priv->lock, flags);
5458         priv->assoc_id = 0;
5459         priv->assoc_capability = 0;
5460
5461         /* new association get rid of ibss beacon skb */
5462         if (priv->ibss_beacon)
5463                 dev_kfree_skb(priv->ibss_beacon);
5464
5465         priv->ibss_beacon = NULL;
5466
5467         priv->beacon_int = priv->hw->conf.beacon_int;
5468         priv->timestamp = 0;
5469         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
5470                 priv->beacon_int = 0;
5471
5472         spin_unlock_irqrestore(&priv->lock, flags);
5473
5474         if (!iwl_is_ready_rf(priv)) {
5475                 IWL_DEBUG_MAC80211("leave - not ready\n");
5476                 mutex_unlock(&priv->mutex);
5477                 return;
5478         }
5479
5480         /* we are restarting association process
5481          * clear RXON_FILTER_ASSOC_MSK bit
5482         */
5483         if (priv->iw_mode != NL80211_IFTYPE_AP) {
5484                 iwl_scan_cancel_timeout(priv, 100);
5485                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5486                 iwl3945_commit_rxon(priv);
5487         }
5488
5489         /* Per mac80211.h: This is only used in IBSS mode... */
5490         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
5491
5492                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
5493                 mutex_unlock(&priv->mutex);
5494                 return;
5495         }
5496
5497         iwl3945_set_rate(priv);
5498
5499         mutex_unlock(&priv->mutex);
5500
5501         IWL_DEBUG_MAC80211("leave\n");
5502
5503 }
5504
5505 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
5506 {
5507         struct iwl_priv *priv = hw->priv;
5508         unsigned long flags;
5509
5510         IWL_DEBUG_MAC80211("enter\n");
5511
5512         if (!iwl_is_ready_rf(priv)) {
5513                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5514                 return -EIO;
5515         }
5516
5517         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
5518                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5519                 return -EIO;
5520         }
5521
5522         spin_lock_irqsave(&priv->lock, flags);
5523
5524         if (priv->ibss_beacon)
5525                 dev_kfree_skb(priv->ibss_beacon);
5526
5527         priv->ibss_beacon = skb;
5528
5529         priv->assoc_id = 0;
5530
5531         IWL_DEBUG_MAC80211("leave\n");
5532         spin_unlock_irqrestore(&priv->lock, flags);
5533
5534         iwl_reset_qos(priv);
5535
5536         iwl3945_post_associate(priv);
5537
5538
5539         return 0;
5540 }
5541
5542 /*****************************************************************************
5543  *
5544  * sysfs attributes
5545  *
5546  *****************************************************************************/
5547
5548 #ifdef CONFIG_IWL3945_DEBUG
5549
5550 /*
5551  * The following adds a new attribute to the sysfs representation
5552  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
5553  * used for controlling the debug level.
5554  *
5555  * See the level definitions in iwl for details.
5556  */
5557 static ssize_t show_debug_level(struct device *d,
5558                                 struct device_attribute *attr, char *buf)
5559 {
5560         struct iwl_priv *priv = d->driver_data;
5561
5562         return sprintf(buf, "0x%08X\n", priv->debug_level);
5563 }
5564 static ssize_t store_debug_level(struct device *d,
5565                                 struct device_attribute *attr,
5566                                  const char *buf, size_t count)
5567 {
5568         struct iwl_priv *priv = d->driver_data;
5569         unsigned long val;
5570         int ret;
5571
5572         ret = strict_strtoul(buf, 0, &val);
5573         if (ret)
5574                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
5575         else
5576                 priv->debug_level = val;
5577
5578         return strnlen(buf, count);
5579 }
5580
5581 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5582                         show_debug_level, store_debug_level);
5583
5584 #endif /* CONFIG_IWL3945_DEBUG */
5585
5586 static ssize_t show_temperature(struct device *d,
5587                                 struct device_attribute *attr, char *buf)
5588 {
5589         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5590
5591         if (!iwl_is_alive(priv))
5592                 return -EAGAIN;
5593
5594         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
5595 }
5596
5597 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
5598
5599 static ssize_t show_tx_power(struct device *d,
5600                              struct device_attribute *attr, char *buf)
5601 {
5602         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5603         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
5604 }
5605
5606 static ssize_t store_tx_power(struct device *d,
5607                               struct device_attribute *attr,
5608                               const char *buf, size_t count)
5609 {
5610         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5611         char *p = (char *)buf;
5612         u32 val;
5613
5614         val = simple_strtoul(p, &p, 10);
5615         if (p == buf)
5616                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
5617         else
5618                 iwl3945_hw_reg_set_txpower(priv, val);
5619
5620         return count;
5621 }
5622
5623 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
5624
5625 static ssize_t show_flags(struct device *d,
5626                           struct device_attribute *attr, char *buf)
5627 {
5628         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5629
5630         return sprintf(buf, "0x%04X\n", priv->active39_rxon.flags);
5631 }
5632
5633 static ssize_t store_flags(struct device *d,
5634                            struct device_attribute *attr,
5635                            const char *buf, size_t count)
5636 {
5637         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5638         u32 flags = simple_strtoul(buf, NULL, 0);
5639
5640         mutex_lock(&priv->mutex);
5641         if (le32_to_cpu(priv->staging39_rxon.flags) != flags) {
5642                 /* Cancel any currently running scans... */
5643                 if (iwl_scan_cancel_timeout(priv, 100))
5644                         IWL_WARN(priv, "Could not cancel scan.\n");
5645                 else {
5646                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
5647                                        flags);
5648                         priv->staging39_rxon.flags = cpu_to_le32(flags);
5649                         iwl3945_commit_rxon(priv);
5650                 }
5651         }
5652         mutex_unlock(&priv->mutex);
5653
5654         return count;
5655 }
5656
5657 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
5658
5659 static ssize_t show_filter_flags(struct device *d,
5660                                  struct device_attribute *attr, char *buf)
5661 {
5662         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5663
5664         return sprintf(buf, "0x%04X\n",
5665                 le32_to_cpu(priv->active39_rxon.filter_flags));
5666 }
5667
5668 static ssize_t store_filter_flags(struct device *d,
5669                                   struct device_attribute *attr,
5670                                   const char *buf, size_t count)
5671 {
5672         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5673         u32 filter_flags = simple_strtoul(buf, NULL, 0);
5674
5675         mutex_lock(&priv->mutex);
5676         if (le32_to_cpu(priv->staging39_rxon.filter_flags) != filter_flags) {
5677                 /* Cancel any currently running scans... */
5678                 if (iwl_scan_cancel_timeout(priv, 100))
5679                         IWL_WARN(priv, "Could not cancel scan.\n");
5680                 else {
5681                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5682                                        "0x%04X\n", filter_flags);
5683                         priv->staging39_rxon.filter_flags =
5684                                 cpu_to_le32(filter_flags);
5685                         iwl3945_commit_rxon(priv);
5686                 }
5687         }
5688         mutex_unlock(&priv->mutex);
5689
5690         return count;
5691 }
5692
5693 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5694                    store_filter_flags);
5695
5696 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
5697
5698 static ssize_t show_measurement(struct device *d,
5699                                 struct device_attribute *attr, char *buf)
5700 {
5701         struct iwl_priv *priv = dev_get_drvdata(d);
5702         struct iwl_spectrum_notification measure_report;
5703         u32 size = sizeof(measure_report), len = 0, ofs = 0;
5704         u8 *data = (u8 *)&measure_report;
5705         unsigned long flags;
5706
5707         spin_lock_irqsave(&priv->lock, flags);
5708         if (!(priv->measurement_status & MEASUREMENT_READY)) {
5709                 spin_unlock_irqrestore(&priv->lock, flags);
5710                 return 0;
5711         }
5712         memcpy(&measure_report, &priv->measure_report, size);
5713         priv->measurement_status = 0;
5714         spin_unlock_irqrestore(&priv->lock, flags);
5715
5716         while (size && (PAGE_SIZE - len)) {
5717                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5718                                    PAGE_SIZE - len, 1);
5719                 len = strlen(buf);
5720                 if (PAGE_SIZE - len)
5721                         buf[len++] = '\n';
5722
5723                 ofs += 16;
5724                 size -= min(size, 16U);
5725         }
5726
5727         return len;
5728 }
5729
5730 static ssize_t store_measurement(struct device *d,
5731                                  struct device_attribute *attr,
5732                                  const char *buf, size_t count)
5733 {
5734         struct iwl_priv *priv = dev_get_drvdata(d);
5735         struct ieee80211_measurement_params params = {
5736                 .channel = le16_to_cpu(priv->active39_rxon.channel),
5737                 .start_time = cpu_to_le64(priv->last_tsf),
5738                 .duration = cpu_to_le16(1),
5739         };
5740         u8 type = IWL_MEASURE_BASIC;
5741         u8 buffer[32];
5742         u8 channel;
5743
5744         if (count) {
5745                 char *p = buffer;
5746                 strncpy(buffer, buf, min(sizeof(buffer), count));
5747                 channel = simple_strtoul(p, NULL, 0);
5748                 if (channel)
5749                         params.channel = channel;
5750
5751                 p = buffer;
5752                 while (*p && *p != ' ')
5753                         p++;
5754                 if (*p)
5755                         type = simple_strtoul(p + 1, NULL, 0);
5756         }
5757
5758         IWL_DEBUG_INFO("Invoking measurement of type %d on "
5759                        "channel %d (for '%s')\n", type, params.channel, buf);
5760         iwl3945_get_measurement(priv, &params, type);
5761
5762         return count;
5763 }
5764
5765 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
5766                    show_measurement, store_measurement);
5767 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
5768
5769 static ssize_t store_retry_rate(struct device *d,
5770                                 struct device_attribute *attr,
5771                                 const char *buf, size_t count)
5772 {
5773         struct iwl_priv *priv = dev_get_drvdata(d);
5774
5775         priv->retry_rate = simple_strtoul(buf, NULL, 0);
5776         if (priv->retry_rate <= 0)
5777                 priv->retry_rate = 1;
5778
5779         return count;
5780 }
5781
5782 static ssize_t show_retry_rate(struct device *d,
5783                                struct device_attribute *attr, char *buf)
5784 {
5785         struct iwl_priv *priv = dev_get_drvdata(d);
5786         return sprintf(buf, "%d", priv->retry_rate);
5787 }
5788
5789 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
5790                    store_retry_rate);
5791
5792 static ssize_t store_power_level(struct device *d,
5793                                  struct device_attribute *attr,
5794                                  const char *buf, size_t count)
5795 {
5796         struct iwl_priv *priv = dev_get_drvdata(d);
5797         int rc;
5798         int mode;
5799
5800         mode = simple_strtoul(buf, NULL, 0);
5801         mutex_lock(&priv->mutex);
5802
5803         if (!iwl_is_ready(priv)) {
5804                 rc = -EAGAIN;
5805                 goto out;
5806         }
5807
5808         if ((mode < 1) || (mode > IWL39_POWER_LIMIT) ||
5809             (mode == IWL39_POWER_AC))
5810                 mode = IWL39_POWER_AC;
5811         else
5812                 mode |= IWL_POWER_ENABLED;
5813
5814         if (mode != priv->power_mode) {
5815                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
5816                 if (rc) {
5817                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
5818                         goto out;
5819                 }
5820                 priv->power_mode = mode;
5821         }
5822
5823         rc = count;
5824
5825  out:
5826         mutex_unlock(&priv->mutex);
5827         return rc;
5828 }
5829
5830 #define MAX_WX_STRING 80
5831
5832 /* Values are in microsecond */
5833 static const s32 timeout_duration[] = {
5834         350000,
5835         250000,
5836         75000,
5837         37000,
5838         25000,
5839 };
5840 static const s32 period_duration[] = {
5841         400000,
5842         700000,
5843         1000000,
5844         1000000,
5845         1000000
5846 };
5847
5848 static ssize_t show_power_level(struct device *d,
5849                                 struct device_attribute *attr, char *buf)
5850 {
5851         struct iwl_priv *priv = dev_get_drvdata(d);
5852         int level = IWL_POWER_LEVEL(priv->power_mode);
5853         char *p = buf;
5854
5855         p += sprintf(p, "%d ", level);
5856         switch (level) {
5857         case IWL_POWER_MODE_CAM:
5858         case IWL39_POWER_AC:
5859                 p += sprintf(p, "(AC)");
5860                 break;
5861         case IWL39_POWER_BATTERY:
5862                 p += sprintf(p, "(BATTERY)");
5863                 break;
5864         default:
5865                 p += sprintf(p,
5866                              "(Timeout %dms, Period %dms)",
5867                              timeout_duration[level - 1] / 1000,
5868                              period_duration[level - 1] / 1000);
5869         }
5870
5871         if (!(priv->power_mode & IWL_POWER_ENABLED))
5872                 p += sprintf(p, " OFF\n");
5873         else
5874                 p += sprintf(p, " \n");
5875
5876         return p - buf + 1;
5877
5878 }
5879
5880 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5881                    store_power_level);
5882
5883 static ssize_t show_channels(struct device *d,
5884                              struct device_attribute *attr, char *buf)
5885 {
5886         /* all this shit doesn't belong into sysfs anyway */
5887         return 0;
5888 }
5889
5890 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5891
5892 static ssize_t show_statistics(struct device *d,
5893                                struct device_attribute *attr, char *buf)
5894 {
5895         struct iwl_priv *priv = dev_get_drvdata(d);
5896         u32 size = sizeof(struct iwl3945_notif_statistics);
5897         u32 len = 0, ofs = 0;
5898         u8 *data = (u8 *)&priv->statistics_39;
5899         int rc = 0;
5900
5901         if (!iwl_is_alive(priv))
5902                 return -EAGAIN;
5903
5904         mutex_lock(&priv->mutex);
5905         rc = iwl3945_send_statistics_request(priv);
5906         mutex_unlock(&priv->mutex);
5907
5908         if (rc) {
5909                 len = sprintf(buf,
5910                               "Error sending statistics request: 0x%08X\n", rc);
5911                 return len;
5912         }
5913
5914         while (size && (PAGE_SIZE - len)) {
5915                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5916                                    PAGE_SIZE - len, 1);
5917                 len = strlen(buf);
5918                 if (PAGE_SIZE - len)
5919                         buf[len++] = '\n';
5920
5921                 ofs += 16;
5922                 size -= min(size, 16U);
5923         }
5924
5925         return len;
5926 }
5927
5928 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5929
5930 static ssize_t show_antenna(struct device *d,
5931                             struct device_attribute *attr, char *buf)
5932 {
5933         struct iwl_priv *priv = dev_get_drvdata(d);
5934
5935         if (!iwl_is_alive(priv))
5936                 return -EAGAIN;
5937
5938         return sprintf(buf, "%d\n", priv->antenna);
5939 }
5940
5941 static ssize_t store_antenna(struct device *d,
5942                              struct device_attribute *attr,
5943                              const char *buf, size_t count)
5944 {
5945         int ant;
5946         struct iwl_priv *priv = dev_get_drvdata(d);
5947
5948         if (count == 0)
5949                 return 0;
5950
5951         if (sscanf(buf, "%1i", &ant) != 1) {
5952                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
5953                 return count;
5954         }
5955
5956         if ((ant >= 0) && (ant <= 2)) {
5957                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
5958                 priv->antenna = (enum iwl3945_antenna)ant;
5959         } else
5960                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
5961
5962
5963         return count;
5964 }
5965
5966 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
5967
5968 static ssize_t show_status(struct device *d,
5969                            struct device_attribute *attr, char *buf)
5970 {
5971         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5972         if (!iwl_is_alive(priv))
5973                 return -EAGAIN;
5974         return sprintf(buf, "0x%08x\n", (int)priv->status);
5975 }
5976
5977 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5978
5979 static ssize_t dump_error_log(struct device *d,
5980                               struct device_attribute *attr,
5981                               const char *buf, size_t count)
5982 {
5983         char *p = (char *)buf;
5984
5985         if (p[0] == '1')
5986                 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
5987
5988         return strnlen(buf, count);
5989 }
5990
5991 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
5992
5993 static ssize_t dump_event_log(struct device *d,
5994                               struct device_attribute *attr,
5995                               const char *buf, size_t count)
5996 {
5997         char *p = (char *)buf;
5998
5999         if (p[0] == '1')
6000                 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
6001
6002         return strnlen(buf, count);
6003 }
6004
6005 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
6006
6007 /*****************************************************************************
6008  *
6009  * driver setup and tear down
6010  *
6011  *****************************************************************************/
6012
6013 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
6014 {
6015         priv->workqueue = create_workqueue(DRV_NAME);
6016
6017         init_waitqueue_head(&priv->wait_command_queue);
6018
6019         INIT_WORK(&priv->up, iwl3945_bg_up);
6020         INIT_WORK(&priv->restart, iwl3945_bg_restart);
6021         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
6022         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
6023         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
6024         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
6025         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
6026         INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
6027         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
6028         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
6029         INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
6030         INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
6031
6032         iwl3945_hw_setup_deferred_work(priv);
6033
6034         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
6035                      iwl3945_irq_tasklet, (unsigned long)priv);
6036 }
6037
6038 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
6039 {
6040         iwl3945_hw_cancel_deferred_work(priv);
6041
6042         cancel_delayed_work_sync(&priv->init_alive_start);
6043         cancel_delayed_work(&priv->scan_check);
6044         cancel_delayed_work(&priv->alive_start);
6045         cancel_work_sync(&priv->beacon_update);
6046 }
6047
6048 static struct attribute *iwl3945_sysfs_entries[] = {
6049         &dev_attr_antenna.attr,
6050         &dev_attr_channels.attr,
6051         &dev_attr_dump_errors.attr,
6052         &dev_attr_dump_events.attr,
6053         &dev_attr_flags.attr,
6054         &dev_attr_filter_flags.attr,
6055 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
6056         &dev_attr_measurement.attr,
6057 #endif
6058         &dev_attr_power_level.attr,
6059         &dev_attr_retry_rate.attr,
6060         &dev_attr_statistics.attr,
6061         &dev_attr_status.attr,
6062         &dev_attr_temperature.attr,
6063         &dev_attr_tx_power.attr,
6064 #ifdef CONFIG_IWL3945_DEBUG
6065         &dev_attr_debug_level.attr,
6066 #endif
6067         NULL
6068 };
6069
6070 static struct attribute_group iwl3945_attribute_group = {
6071         .name = NULL,           /* put in device directory */
6072         .attrs = iwl3945_sysfs_entries,
6073 };
6074
6075 static struct ieee80211_ops iwl3945_hw_ops = {
6076         .tx = iwl3945_mac_tx,
6077         .start = iwl3945_mac_start,
6078         .stop = iwl3945_mac_stop,
6079         .add_interface = iwl3945_mac_add_interface,
6080         .remove_interface = iwl3945_mac_remove_interface,
6081         .config = iwl3945_mac_config,
6082         .config_interface = iwl3945_mac_config_interface,
6083         .configure_filter = iwl3945_configure_filter,
6084         .set_key = iwl3945_mac_set_key,
6085         .get_tx_stats = iwl3945_mac_get_tx_stats,
6086         .conf_tx = iwl3945_mac_conf_tx,
6087         .reset_tsf = iwl3945_mac_reset_tsf,
6088         .bss_info_changed = iwl3945_bss_info_changed,
6089         .hw_scan = iwl3945_mac_hw_scan
6090 };
6091
6092 static int iwl3945_init_drv(struct iwl_priv *priv)
6093 {
6094         int ret;
6095         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
6096
6097         priv->retry_rate = 1;
6098         priv->ibss_beacon = NULL;
6099
6100         spin_lock_init(&priv->lock);
6101         spin_lock_init(&priv->power_data.lock);
6102         spin_lock_init(&priv->sta_lock);
6103         spin_lock_init(&priv->hcmd_lock);
6104
6105         INIT_LIST_HEAD(&priv->free_frames);
6106
6107         mutex_init(&priv->mutex);
6108
6109         /* Clear the driver's (not device's) station table */
6110         iwl3945_clear_stations_table(priv);
6111
6112         priv->data_retry_limit = -1;
6113         priv->ieee_channels = NULL;
6114         priv->ieee_rates = NULL;
6115         priv->band = IEEE80211_BAND_2GHZ;
6116
6117         priv->iw_mode = NL80211_IFTYPE_STATION;
6118
6119         iwl_reset_qos(priv);
6120
6121         priv->qos_data.qos_active = 0;
6122         priv->qos_data.qos_cap.val = 0;
6123
6124         priv->rates_mask = IWL_RATES_MASK;
6125         /* If power management is turned on, default to AC mode */
6126         priv->power_mode = IWL39_POWER_AC;
6127         priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
6128
6129         if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
6130                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
6131                          eeprom->version);
6132                 ret = -EINVAL;
6133                 goto err;
6134         }
6135         ret = iwl_init_channel_map(priv);
6136         if (ret) {
6137                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
6138                 goto err;
6139         }
6140
6141         /* Set up txpower settings in driver for all channels */
6142         if (iwl3945_txpower_set_from_eeprom(priv)) {
6143                 ret = -EIO;
6144                 goto err_free_channel_map;
6145         }
6146
6147         ret = iwl3945_init_geos(priv);
6148         if (ret) {
6149                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
6150                 goto err_free_channel_map;
6151         }
6152
6153         return 0;
6154
6155 err_free_channel_map:
6156         iwl_free_channel_map(priv);
6157 err:
6158         return ret;
6159 }
6160
6161 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
6162 {
6163         int err = 0;
6164         struct iwl_priv *priv;
6165         struct ieee80211_hw *hw;
6166         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
6167         struct iwl3945_eeprom *eeprom;
6168         unsigned long flags;
6169
6170         /***********************
6171          * 1. Allocating HW data
6172          * ********************/
6173
6174         /* mac80211 allocates memory for this device instance, including
6175          *   space for this driver's private structure */
6176         hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
6177         if (hw == NULL) {
6178                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
6179                 err = -ENOMEM;
6180                 goto out;
6181         }
6182         priv = hw->priv;
6183         SET_IEEE80211_DEV(hw, &pdev->dev);
6184
6185         if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
6186              (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
6187                 IWL_ERR(priv,
6188                         "invalid queues_num, should be between %d and %d\n",
6189                         IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
6190                 err = -EINVAL;
6191                 goto out;
6192         }
6193
6194         /*
6195          * Disabling hardware scan means that mac80211 will perform scans
6196          * "the hard way", rather than using device's scan.
6197          */
6198         if (iwl3945_mod_params.disable_hw_scan) {
6199                 IWL_DEBUG_INFO("Disabling hw_scan\n");
6200                 iwl3945_hw_ops.hw_scan = NULL;
6201         }
6202
6203
6204         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
6205         priv->cfg = cfg;
6206         priv->pci_dev = pdev;
6207
6208 #ifdef CONFIG_IWL3945_DEBUG
6209         priv->debug_level = iwl3945_mod_params.debug;
6210         atomic_set(&priv->restrict_refcnt, 0);
6211 #endif
6212         hw->rate_control_algorithm = "iwl-3945-rs";
6213         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
6214
6215         /* Select antenna (may be helpful if only one antenna is connected) */
6216         priv->antenna = (enum iwl3945_antenna)iwl3945_mod_params.antenna;
6217
6218         /* Tell mac80211 our characteristics */
6219         hw->flags = IEEE80211_HW_SIGNAL_DBM |
6220                     IEEE80211_HW_NOISE_DBM;
6221
6222         hw->wiphy->interface_modes =
6223                 BIT(NL80211_IFTYPE_STATION) |
6224                 BIT(NL80211_IFTYPE_ADHOC);
6225
6226         hw->wiphy->custom_regulatory = true;
6227
6228         /* 4 EDCA QOS priorities */
6229         hw->queues = 4;
6230
6231         /***************************
6232          * 2. Initializing PCI bus
6233          * *************************/
6234         if (pci_enable_device(pdev)) {
6235                 err = -ENODEV;
6236                 goto out_ieee80211_free_hw;
6237         }
6238
6239         pci_set_master(pdev);
6240
6241         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6242         if (!err)
6243                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
6244         if (err) {
6245                 IWL_WARN(priv, "No suitable DMA available.\n");
6246                 goto out_pci_disable_device;
6247         }
6248
6249         pci_set_drvdata(pdev, priv);
6250         err = pci_request_regions(pdev, DRV_NAME);
6251         if (err)
6252                 goto out_pci_disable_device;
6253
6254         /***********************
6255          * 3. Read REV Register
6256          * ********************/
6257         priv->hw_base = pci_iomap(pdev, 0, 0);
6258         if (!priv->hw_base) {
6259                 err = -ENODEV;
6260                 goto out_pci_release_regions;
6261         }
6262
6263         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
6264                         (unsigned long long) pci_resource_len(pdev, 0));
6265         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
6266
6267         /* We disable the RETRY_TIMEOUT register (0x41) to keep
6268          * PCI Tx retries from interfering with C3 CPU state */
6269         pci_write_config_byte(pdev, 0x41, 0x00);
6270
6271         /* amp init */
6272         err = priv->cfg->ops->lib->apm_ops.init(priv);
6273         if (err < 0) {
6274                 IWL_DEBUG_INFO("Failed to init APMG\n");
6275                 goto out_iounmap;
6276         }
6277
6278         /***********************
6279          * 4. Read EEPROM
6280          * ********************/
6281
6282         /* Read the EEPROM */
6283         err = iwl_eeprom_init(priv);
6284         if (err) {
6285                 IWL_ERR(priv, "Unable to init EEPROM\n");
6286                 goto out_remove_sysfs;
6287         }
6288         /* MAC Address location in EEPROM same for 3945/4965 */
6289         eeprom = (struct iwl3945_eeprom *)priv->eeprom;
6290         memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
6291         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
6292         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6293
6294         /***********************
6295          * 5. Setup HW Constants
6296          * ********************/
6297         /* Device-specific setup */
6298         if (iwl3945_hw_set_hw_params(priv)) {
6299                 IWL_ERR(priv, "failed to set hw settings\n");
6300                 goto out_iounmap;
6301         }
6302
6303         /***********************
6304          * 6. Setup priv
6305          * ********************/
6306
6307         err = iwl3945_init_drv(priv);
6308         if (err) {
6309                 IWL_ERR(priv, "initializing driver failed\n");
6310                 goto out_free_geos;
6311         }
6312
6313         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
6314                 priv->cfg->name);
6315
6316         /***********************************
6317          * 7. Initialize Module Parameters
6318          * **********************************/
6319
6320         /* Initialize module parameter values here */
6321         /* Disable radio (SW RF KILL) via parameter when loading driver */
6322         if (iwl3945_mod_params.disable) {
6323                 set_bit(STATUS_RF_KILL_SW, &priv->status);
6324                 IWL_DEBUG_INFO("Radio disabled.\n");
6325         }
6326
6327
6328         /***********************
6329          * 8. Setup Services
6330          * ********************/
6331
6332         spin_lock_irqsave(&priv->lock, flags);
6333         iwl3945_disable_interrupts(priv);
6334         spin_unlock_irqrestore(&priv->lock, flags);
6335
6336         pci_enable_msi(priv->pci_dev);
6337
6338         err = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6339                           DRV_NAME, priv);
6340         if (err) {
6341                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
6342                 goto out_disable_msi;
6343         }
6344
6345         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
6346         if (err) {
6347                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
6348                 goto out_release_irq;
6349         }
6350
6351         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
6352         iwl3945_setup_deferred_work(priv);
6353         iwl3945_setup_rx_handlers(priv);
6354
6355         /*********************************
6356          * 9. Setup and Register mac80211
6357          * *******************************/
6358
6359         err = ieee80211_register_hw(priv->hw);
6360         if (err) {
6361                 IWL_ERR(priv, "Failed to register network device: %d\n", err);
6362                 goto  out_remove_sysfs;
6363         }
6364
6365         priv->hw->conf.beacon_int = 100;
6366         priv->mac80211_registered = 1;
6367
6368         err = iwl_rfkill_init(priv);
6369         if (err)
6370                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
6371                                   "Ignoring error: %d\n", err);
6372
6373         /* Start monitoring the killswitch */
6374         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
6375                            2 * HZ);
6376
6377         return 0;
6378
6379  out_remove_sysfs:
6380         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
6381  out_free_geos:
6382         iwl3945_free_geos(priv);
6383
6384  out_release_irq:
6385         free_irq(priv->pci_dev->irq, priv);
6386         destroy_workqueue(priv->workqueue);
6387         priv->workqueue = NULL;
6388         iwl3945_unset_hw_params(priv);
6389  out_disable_msi:
6390         pci_disable_msi(priv->pci_dev);
6391  out_iounmap:
6392         pci_iounmap(pdev, priv->hw_base);
6393  out_pci_release_regions:
6394         pci_release_regions(pdev);
6395  out_pci_disable_device:
6396         pci_disable_device(pdev);
6397         pci_set_drvdata(pdev, NULL);
6398  out_ieee80211_free_hw:
6399         ieee80211_free_hw(priv->hw);
6400  out:
6401         return err;
6402 }
6403
6404 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
6405 {
6406         struct iwl_priv *priv = pci_get_drvdata(pdev);
6407         unsigned long flags;
6408
6409         if (!priv)
6410                 return;
6411
6412         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
6413
6414         set_bit(STATUS_EXIT_PENDING, &priv->status);
6415
6416         if (priv->mac80211_registered) {
6417                 ieee80211_unregister_hw(priv->hw);
6418                 priv->mac80211_registered = 0;
6419         } else {
6420                 iwl3945_down(priv);
6421         }
6422
6423         /* make sure we flush any pending irq or
6424          * tasklet for the driver
6425          */
6426         spin_lock_irqsave(&priv->lock, flags);
6427         iwl3945_disable_interrupts(priv);
6428         spin_unlock_irqrestore(&priv->lock, flags);
6429
6430         iwl_synchronize_irq(priv);
6431
6432         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
6433
6434         iwl_rfkill_unregister(priv);
6435         cancel_delayed_work(&priv->rfkill_poll);
6436
6437         iwl3945_dealloc_ucode_pci(priv);
6438
6439         if (priv->rxq.bd)
6440                 iwl_rx_queue_free(priv, &priv->rxq);
6441         iwl3945_hw_txq_ctx_free(priv);
6442
6443         iwl3945_unset_hw_params(priv);
6444         iwl3945_clear_stations_table(priv);
6445
6446         /*netif_stop_queue(dev); */
6447         flush_workqueue(priv->workqueue);
6448
6449         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
6450          * priv->workqueue... so we can't take down the workqueue
6451          * until now... */
6452         destroy_workqueue(priv->workqueue);
6453         priv->workqueue = NULL;
6454
6455         free_irq(pdev->irq, priv);
6456         pci_disable_msi(pdev);
6457
6458         pci_iounmap(pdev, priv->hw_base);
6459         pci_release_regions(pdev);
6460         pci_disable_device(pdev);
6461         pci_set_drvdata(pdev, NULL);
6462
6463         iwl_free_channel_map(priv);
6464         iwl3945_free_geos(priv);
6465         kfree(priv->scan);
6466         if (priv->ibss_beacon)
6467                 dev_kfree_skb(priv->ibss_beacon);
6468
6469         ieee80211_free_hw(priv->hw);
6470 }
6471
6472 #ifdef CONFIG_PM
6473
6474 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
6475 {
6476         struct iwl_priv *priv = pci_get_drvdata(pdev);
6477
6478         if (priv->is_open) {
6479                 set_bit(STATUS_IN_SUSPEND, &priv->status);
6480                 iwl3945_mac_stop(priv->hw);
6481                 priv->is_open = 1;
6482         }
6483         pci_save_state(pdev);
6484         pci_disable_device(pdev);
6485         pci_set_power_state(pdev, PCI_D3hot);
6486
6487         return 0;
6488 }
6489
6490 static int iwl3945_pci_resume(struct pci_dev *pdev)
6491 {
6492         struct iwl_priv *priv = pci_get_drvdata(pdev);
6493
6494         pci_set_power_state(pdev, PCI_D0);
6495         pci_enable_device(pdev);
6496         pci_restore_state(pdev);
6497
6498         if (priv->is_open)
6499                 iwl3945_mac_start(priv->hw);
6500
6501         clear_bit(STATUS_IN_SUSPEND, &priv->status);
6502         return 0;
6503 }
6504
6505 #endif /* CONFIG_PM */
6506
6507 /*****************************************************************************
6508  *
6509  * driver and module entry point
6510  *
6511  *****************************************************************************/
6512
6513 static struct pci_driver iwl3945_driver = {
6514         .name = DRV_NAME,
6515         .id_table = iwl3945_hw_card_ids,
6516         .probe = iwl3945_pci_probe,
6517         .remove = __devexit_p(iwl3945_pci_remove),
6518 #ifdef CONFIG_PM
6519         .suspend = iwl3945_pci_suspend,
6520         .resume = iwl3945_pci_resume,
6521 #endif
6522 };
6523
6524 static int __init iwl3945_init(void)
6525 {
6526
6527         int ret;
6528         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
6529         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
6530
6531         ret = iwl3945_rate_control_register();
6532         if (ret) {
6533                 printk(KERN_ERR DRV_NAME
6534                        "Unable to register rate control algorithm: %d\n", ret);
6535                 return ret;
6536         }
6537
6538         ret = pci_register_driver(&iwl3945_driver);
6539         if (ret) {
6540                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
6541                 goto error_register;
6542         }
6543
6544         return ret;
6545
6546 error_register:
6547         iwl3945_rate_control_unregister();
6548         return ret;
6549 }
6550
6551 static void __exit iwl3945_exit(void)
6552 {
6553         pci_unregister_driver(&iwl3945_driver);
6554         iwl3945_rate_control_unregister();
6555 }
6556
6557 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
6558
6559 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
6560 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
6561 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
6562 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
6563 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
6564 MODULE_PARM_DESC(swcrypto,
6565                  "using software crypto (default 1 [software])\n");
6566 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
6567 MODULE_PARM_DESC(debug, "debug output mask");
6568 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
6569 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
6570
6571 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
6572 MODULE_PARM_DESC(queues_num, "number of hw queues.");
6573
6574 module_exit(iwl3945_exit);
6575 module_init(iwl3945_init);