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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  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-3945-core.h"
  52 #include "iwl-commands.h"
  53 #include "iwl-3945.h"
  54 #include "iwl-3945-fh.h"
  55 #include "iwl-helpers.h"
  56
  57 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
  58                                   struct iwl3945_tx_queue *txq);
  59
  60 /******************************************************************************
  61  *
  62  * module boiler plate
  63  *
  64  ******************************************************************************/
  65
  66 /* module parameters */
  67 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
  68 static u32 iwl3945_param_debug;    /* def: 0 = minimal debug log messages */
  69 static int iwl3945_param_disable;  /* def: 0 = enable radio */
  70 static int iwl3945_param_antenna;  /* def: 0 = both antennas (use diversity) */
  71 int iwl3945_param_hwcrypto;        /* def: 0 = use software encryption */
  72 int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
  73
  74 /*
  75  * module name, copyright, version, etc.
  76  */
  77
  78 #define DRV_DESCRIPTION \
  79 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  80
  81 #ifdef CONFIG_IWL3945_DEBUG
  82 #define VD "d"
  83 #else
  84 #define VD
  85 #endif
  86
  87 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  88 #define VS "s"
  89 #else
  90 #define VS
  91 #endif
  92
  93 #define IWLWIFI_VERSION "1.2.26k" VD VS
  94 #define DRV_COPYRIGHT   "Copyright(c) 2003-2008 Intel Corporation"
  95 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  96 #define DRV_VERSION     IWLWIFI_VERSION
  97
  98
  99 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 100 MODULE_VERSION(DRV_VERSION);
 101 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
 102 MODULE_LICENSE("GPL");
 103
 104 static const struct ieee80211_supported_band *iwl3945_get_band(
 105                 struct iwl3945_priv *priv, enum ieee80211_band band)
 106 {
 107         return priv->hw->wiphy->bands[band];
 108 }
 109
 110 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 111  * DMA services
 112  *
 113  * Theory of operation
 114  *
 115  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 116  * of buffer descriptors, each of which points to one or more data buffers for
 117  * the device to read from or fill.  Driver and device exchange status of each
 118  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 119  * entries in each circular buffer, to protect against confusing empty and full
 120  * queue states.
 121  *
 122  * The device reads or writes the data in the queues via the device's several
 123  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 124  *
 125  * For Tx queue, there are low mark and high mark limits. If, after queuing
 126  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 127  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 128  * Tx queue resumed.
 129  *
 130  * The 3945 operates with six queues:  One receive queue, one transmit queue
 131  * (#4) for sending commands to the device firmware, and four transmit queues
 132  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 133  ***************************************************/
 134
 135 int iwl3945_queue_space(const struct iwl3945_queue *q)
 136 {
 137         int s = q->read_ptr - q->write_ptr;
 138
 139         if (q->read_ptr > q->write_ptr)
 140                 s -= q->n_bd;
 141
 142         if (s <= 0)
 143                 s += q->n_window;
 144         /* keep some reserve to not confuse empty and full situations */
 145         s -= 2;
 146         if (s < 0)
 147                 s = 0;
 148         return s;
 149 }
 150
 151 int iwl3945_x2_queue_used(const struct iwl3945_queue *q, int i)
 152 {
 153         return q->write_ptr > q->read_ptr ?
 154                 (i >= q->read_ptr && i < q->write_ptr) :
 155                 !(i < q->read_ptr && i >= q->write_ptr);
 156 }
 157
 158
 159 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
 160 {
 161         /* This is for scan command, the big buffer at end of command array */
 162         if (is_huge)
 163                 return q->n_window;     /* must be power of 2 */
 164
 165         /* Otherwise, use normal size buffers */
 166         return index & (q->n_window - 1);
 167 }
 168
 169 /**
 170  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 171  */
 172 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
 173                           int count, int slots_num, u32 id)
 174 {
 175         q->n_bd = count;
 176         q->n_window = slots_num;
 177         q->id = id;
 178
 179         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 180          * and iwl_queue_dec_wrap are broken. */
 181         BUG_ON(!is_power_of_2(count));
 182
 183         /* slots_num must be power-of-two size, otherwise
 184          * get_cmd_index is broken. */
 185         BUG_ON(!is_power_of_2(slots_num));
 186
 187         q->low_mark = q->n_window / 4;
 188         if (q->low_mark < 4)
 189                 q->low_mark = 4;
 190
 191         q->high_mark = q->n_window / 8;
 192         if (q->high_mark < 2)
 193                 q->high_mark = 2;
 194
 195         q->write_ptr = q->read_ptr = 0;
 196
 197         return 0;
 198 }
 199
 200 /**
 201  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 202  */
 203 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
 204                               struct iwl3945_tx_queue *txq, u32 id)
 205 {
 206         struct pci_dev *dev = priv->pci_dev;
 207
 208         /* Driver private data, only for Tx (not command) queues,
 209          * not shared with device. */
 210         if (id != IWL_CMD_QUEUE_NUM) {
 211                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 212                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 213                 if (!txq->txb) {
 214                         IWL_ERROR("kmalloc for auxiliary BD "
 215                                   "structures failed\n");
 216                         goto error;
 217                 }
 218         } else
 219                 txq->txb = NULL;
 220
 221         /* Circular buffer of transmit frame descriptors (TFDs),
 222          * shared with device */
 223         txq->bd = pci_alloc_consistent(dev,
 224                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 225                         &txq->q.dma_addr);
 226
 227         if (!txq->bd) {
 228                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 229                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 230                 goto error;
 231         }
 232         txq->q.id = id;
 233
 234         return 0;
 235
 236  error:
 237         kfree(txq->txb);
 238         txq->txb = NULL;
 239
 240         return -ENOMEM;
 241 }
 242
 243 /**
 244  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 245  */
 246 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
 247                       struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
 248 {
 249         struct pci_dev *dev = priv->pci_dev;
 250         int len;
 251         int rc = 0;
 252
 253         /*
 254          * Alloc buffer array for commands (Tx or other types of commands).
 255          * For the command queue (#4), allocate command space + one big
 256          * command for scan, since scan command is very huge; the system will
 257          * not have two scans at the same time, so only one is needed.
 258          * For data Tx queues (all other queues), no super-size command
 259          * space is needed.
 260          */
 261         len = sizeof(struct iwl3945_cmd) * slots_num;
 262         if (txq_id == IWL_CMD_QUEUE_NUM)
 263                 len +=  IWL_MAX_SCAN_SIZE;
 264         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 265         if (!txq->cmd)
 266                 return -ENOMEM;
 267
 268         /* Alloc driver data array and TFD circular buffer */
 269         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 270         if (rc) {
 271                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 272
 273                 return -ENOMEM;
 274         }
 275         txq->need_update = 0;
 276
 277         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 278          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 279         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 280
 281         /* Initialize queue high/low-water, head/tail indexes */
 282         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 283
 284         /* Tell device where to find queue, enable DMA channel. */
 285         iwl3945_hw_tx_queue_init(priv, txq);
 286
 287         return 0;
 288 }
 289
 290 /**
 291  * iwl3945_tx_queue_free - Deallocate DMA queue.
 292  * @txq: Transmit queue to deallocate.
 293  *
 294  * Empty queue by removing and destroying all BD's.
 295  * Free all buffers.
 296  * 0-fill, but do not free "txq" descriptor structure.
 297  */
 298 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
 299 {
 300         struct iwl3945_queue *q = &txq->q;
 301         struct pci_dev *dev = priv->pci_dev;
 302         int len;
 303
 304         if (q->n_bd == 0)
 305                 return;
 306
 307         /* first, empty all BD's */
 308         for (; q->write_ptr != q->read_ptr;
 309              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 310                 iwl3945_hw_txq_free_tfd(priv, txq);
 311
 312         len = sizeof(struct iwl3945_cmd) * q->n_window;
 313         if (q->id == IWL_CMD_QUEUE_NUM)
 314                 len += IWL_MAX_SCAN_SIZE;
 315
 316         /* De-alloc array of command/tx buffers */
 317         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 318
 319         /* De-alloc circular buffer of TFDs */
 320         if (txq->q.n_bd)
 321                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
 322                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 323
 324         /* De-alloc array of per-TFD driver data */
 325         kfree(txq->txb);
 326         txq->txb = NULL;
 327
 328         /* 0-fill queue descriptor structure */
 329         memset(txq, 0, sizeof(*txq));
 330 }
 331
 332 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 333
 334 /*************** STATION TABLE MANAGEMENT ****
 335  * mac80211 should be examined to determine if sta_info is duplicating
 336  * the functionality provided here
 337  */
 338
 339 /**************************************************************/
 340 #if 0 /* temporary disable till we add real remove station */
 341 /**
 342  * iwl3945_remove_station - Remove driver's knowledge of station.
 343  *
 344  * NOTE:  This does not remove station from device's station table.
 345  */
 346 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
 347 {
 348         int index = IWL_INVALID_STATION;
 349         int i;
 350         unsigned long flags;
 351
 352         spin_lock_irqsave(&priv->sta_lock, flags);
 353
 354         if (is_ap)
 355                 index = IWL_AP_ID;
 356         else if (is_broadcast_ether_addr(addr))
 357                 index = priv->hw_setting.bcast_sta_id;
 358         else
 359                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 360                         if (priv->stations[i].used &&
 361                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 362                                                 addr)) {
 363                                 index = i;
 364                                 break;
 365                         }
 366
 367         if (unlikely(index == IWL_INVALID_STATION))
 368                 goto out;
 369
 370         if (priv->stations[index].used) {
 371                 priv->stations[index].used = 0;
 372                 priv->num_stations--;
 373         }
 374
 375         BUG_ON(priv->num_stations < 0);
 376
 377 out:
 378         spin_unlock_irqrestore(&priv->sta_lock, flags);
 379         return 0;
 380 }
 381 #endif
 382
 383 /**
 384  * iwl3945_clear_stations_table - Clear the driver's station table
 385  *
 386  * NOTE:  This does not clear or otherwise alter the device's station table.
 387  */
 388 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
 389 {
 390         unsigned long flags;
 391
 392         spin_lock_irqsave(&priv->sta_lock, flags);
 393
 394         priv->num_stations = 0;
 395         memset(priv->stations, 0, sizeof(priv->stations));
 396
 397         spin_unlock_irqrestore(&priv->sta_lock, flags);
 398 }
 399
 400 /**
 401  * iwl3945_add_station - Add station to station tables in driver and device
 402  */
 403 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
 404 {
 405         int i;
 406         int index = IWL_INVALID_STATION;
 407         struct iwl3945_station_entry *station;
 408         unsigned long flags_spin;
 409         u8 rate;
 410
 411         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 412         if (is_ap)
 413                 index = IWL_AP_ID;
 414         else if (is_broadcast_ether_addr(addr))
 415                 index = priv->hw_setting.bcast_sta_id;
 416         else
 417                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 418                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 419                                                 addr)) {
 420                                 index = i;
 421                                 break;
 422                         }
 423
 424                         if (!priv->stations[i].used &&
 425                             index == IWL_INVALID_STATION)
 426                                 index = i;
 427                 }
 428
 429         /* These two conditions has the same outcome but keep them separate
 430           since they have different meaning */
 431         if (unlikely(index == IWL_INVALID_STATION)) {
 432                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 433                 return index;
 434         }
 435
 436         if (priv->stations[index].used &&
 437            !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 438                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 439                 return index;
 440         }
 441
 442         IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
 443         station = &priv->stations[index];
 444         station->used = 1;
 445         priv->num_stations++;
 446
 447         /* Set up the REPLY_ADD_STA command to send to device */
 448         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 449         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 450         station->sta.mode = 0;
 451         station->sta.sta.sta_id = index;
 452         station->sta.station_flags = 0;
 453
 454         if (priv->band == IEEE80211_BAND_5GHZ)
 455                 rate = IWL_RATE_6M_PLCP;
 456         else
 457                 rate =  IWL_RATE_1M_PLCP;
 458
 459         /* Turn on both antennas for the station... */
 460         station->sta.rate_n_flags =
 461                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 462
 463         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 464
 465         /* Add station to device's station table */
 466         iwl3945_send_add_station(priv, &station->sta, flags);
 467         return index;
 468
 469 }
 470
 471 /*************** DRIVER STATUS FUNCTIONS   *****/
 472
 473 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
 474 {
 475         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 476          * set but EXIT_PENDING is not */
 477         return test_bit(STATUS_READY, &priv->status) &&
 478                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 479                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 480 }
 481
 482 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
 483 {
 484         return test_bit(STATUS_ALIVE, &priv->status);
 485 }
 486
 487 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
 488 {
 489         return test_bit(STATUS_INIT, &priv->status);
 490 }
 491
 492 static inline int iwl3945_is_rfkill_sw(struct iwl3945_priv *priv)
 493 {
 494         return test_bit(STATUS_RF_KILL_SW, &priv->status);
 495 }
 496
 497 static inline int iwl3945_is_rfkill_hw(struct iwl3945_priv *priv)
 498 {
 499         return test_bit(STATUS_RF_KILL_HW, &priv->status);
 500 }
 501
 502 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
 503 {
 504         return iwl3945_is_rfkill_hw(priv) ||
 505                 iwl3945_is_rfkill_sw(priv);
 506 }
 507
 508 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
 509 {
 510
 511         if (iwl3945_is_rfkill(priv))
 512                 return 0;
 513
 514         return iwl3945_is_ready(priv);
 515 }
 516
 517 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 518
 519 #define IWL_CMD(x) case x: return #x
 520
 521 static const char *get_cmd_string(u8 cmd)
 522 {
 523         switch (cmd) {
 524                 IWL_CMD(REPLY_ALIVE);
 525                 IWL_CMD(REPLY_ERROR);
 526                 IWL_CMD(REPLY_RXON);
 527                 IWL_CMD(REPLY_RXON_ASSOC);
 528                 IWL_CMD(REPLY_QOS_PARAM);
 529                 IWL_CMD(REPLY_RXON_TIMING);
 530                 IWL_CMD(REPLY_ADD_STA);
 531                 IWL_CMD(REPLY_REMOVE_STA);
 532                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 533                 IWL_CMD(REPLY_3945_RX);
 534                 IWL_CMD(REPLY_TX);
 535                 IWL_CMD(REPLY_RATE_SCALE);
 536                 IWL_CMD(REPLY_LEDS_CMD);
 537                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 538                 IWL_CMD(RADAR_NOTIFICATION);
 539                 IWL_CMD(REPLY_QUIET_CMD);
 540                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 541                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 542                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 543                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 544                 IWL_CMD(POWER_TABLE_CMD);
 545                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 546                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 547                 IWL_CMD(REPLY_SCAN_CMD);
 548                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 549                 IWL_CMD(SCAN_START_NOTIFICATION);
 550                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 551                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 552                 IWL_CMD(BEACON_NOTIFICATION);
 553                 IWL_CMD(REPLY_TX_BEACON);
 554                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 555                 IWL_CMD(QUIET_NOTIFICATION);
 556                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 557                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 558                 IWL_CMD(REPLY_BT_CONFIG);
 559                 IWL_CMD(REPLY_STATISTICS_CMD);
 560                 IWL_CMD(STATISTICS_NOTIFICATION);
 561                 IWL_CMD(REPLY_CARD_STATE_CMD);
 562                 IWL_CMD(CARD_STATE_NOTIFICATION);
 563                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 564         default:
 565                 return "UNKNOWN";
 566
 567         }
 568 }
 569
 570 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 571
 572 /**
 573  * iwl3945_enqueue_hcmd - enqueue a uCode command
 574  * @priv: device private data point
 575  * @cmd: a point to the ucode command structure
 576  *
 577  * The function returns < 0 values to indicate the operation is
 578  * failed. On success, it turns the index (> 0) of command in the
 579  * command queue.
 580  */
 581 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 582 {
 583         struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 584         struct iwl3945_queue *q = &txq->q;
 585         struct iwl3945_tfd_frame *tfd;
 586         u32 *control_flags;
 587         struct iwl3945_cmd *out_cmd;
 588         u32 idx;
 589         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 590         dma_addr_t phys_addr;
 591         int pad;
 592         u16 count;
 593         int ret;
 594         unsigned long flags;
 595
 596         /* If any of the command structures end up being larger than
 597          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 598          * we will need to increase the size of the TFD entries */
 599         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 600                !(cmd->meta.flags & CMD_SIZE_HUGE));
 601
 602
 603         if (iwl3945_is_rfkill(priv)) {
 604                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 605                 return -EIO;
 606         }
 607
 608         if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 609                 IWL_ERROR("No space for Tx\n");
 610                 return -ENOSPC;
 611         }
 612
 613         spin_lock_irqsave(&priv->hcmd_lock, flags);
 614
 615         tfd = &txq->bd[q->write_ptr];
 616         memset(tfd, 0, sizeof(*tfd));
 617
 618         control_flags = (u32 *) tfd;
 619
 620         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 621         out_cmd = &txq->cmd[idx];
 622
 623         out_cmd->hdr.cmd = cmd->id;
 624         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 625         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 626
 627         /* At this point, the out_cmd now has all of the incoming cmd
 628          * information */
 629
 630         out_cmd->hdr.flags = 0;
 631         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 632                         INDEX_TO_SEQ(q->write_ptr));
 633         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 634                 out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
 635
 636         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 637                         offsetof(struct iwl3945_cmd, hdr);
 638         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 639
 640         pad = U32_PAD(cmd->len);
 641         count = TFD_CTL_COUNT_GET(*control_flags);
 642         *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
 643
 644         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 645                      "%d bytes at %d[%d]:%d\n",
 646                      get_cmd_string(out_cmd->hdr.cmd),
 647                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 648                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 649
 650         txq->need_update = 1;
 651
 652         /* Increment and update queue's write index */
 653         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 654         ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
 655
 656         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 657         return ret ? ret : idx;
 658 }
 659
 660 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 661 {
 662         int ret;
 663
 664         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 665
 666         /* An asynchronous command can not expect an SKB to be set. */
 667         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 668
 669         /* An asynchronous command MUST have a callback. */
 670         BUG_ON(!cmd->meta.u.callback);
 671
 672         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 673                 return -EBUSY;
 674
 675         ret = iwl3945_enqueue_hcmd(priv, cmd);
 676         if (ret < 0) {
 677                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 678                           get_cmd_string(cmd->id), ret);
 679                 return ret;
 680         }
 681         return 0;
 682 }
 683
 684 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 685 {
 686         int cmd_idx;
 687         int ret;
 688
 689         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 690
 691          /* A synchronous command can not have a callback set. */
 692         BUG_ON(cmd->meta.u.callback != NULL);
 693
 694         if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
 695                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 696                           get_cmd_string(cmd->id));
 697                 ret = -EBUSY;
 698                 goto out;
 699         }
 700
 701         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 702
 703         if (cmd->meta.flags & CMD_WANT_SKB)
 704                 cmd->meta.source = &cmd->meta;
 705
 706         cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
 707         if (cmd_idx < 0) {
 708                 ret = cmd_idx;
 709                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 710                           get_cmd_string(cmd->id), ret);
 711                 goto out;
 712         }
 713
 714         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 715                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 716                         HOST_COMPLETE_TIMEOUT);
 717         if (!ret) {
 718                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 719                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 720                                   get_cmd_string(cmd->id),
 721                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 722
 723                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 724                         ret = -ETIMEDOUT;
 725                         goto cancel;
 726                 }
 727         }
 728
 729         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 730                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 731                                get_cmd_string(cmd->id));
 732                 ret = -ECANCELED;
 733                 goto fail;
 734         }
 735         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 736                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 737                                get_cmd_string(cmd->id));
 738                 ret = -EIO;
 739                 goto fail;
 740         }
 741         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 742                 IWL_ERROR("Error: Response NULL in '%s'\n",
 743                           get_cmd_string(cmd->id));
 744                 ret = -EIO;
 745                 goto cancel;
 746         }
 747
 748         ret = 0;
 749         goto out;
 750
 751 cancel:
 752         if (cmd->meta.flags & CMD_WANT_SKB) {
 753                 struct iwl3945_cmd *qcmd;
 754
 755                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 756                  * TX cmd queue. Otherwise in case the cmd comes
 757                  * in later, it will possibly set an invalid
 758                  * address (cmd->meta.source). */
 759                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 760                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 761         }
 762 fail:
 763         if (cmd->meta.u.skb) {
 764                 dev_kfree_skb_any(cmd->meta.u.skb);
 765                 cmd->meta.u.skb = NULL;
 766         }
 767 out:
 768         clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
 769         return ret;
 770 }
 771
 772 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 773 {
 774         if (cmd->meta.flags & CMD_ASYNC)
 775                 return iwl3945_send_cmd_async(priv, cmd);
 776
 777         return iwl3945_send_cmd_sync(priv, cmd);
 778 }
 779
 780 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
 781 {
 782         struct iwl3945_host_cmd cmd = {
 783                 .id = id,
 784                 .len = len,
 785                 .data = data,
 786         };
 787
 788         return iwl3945_send_cmd_sync(priv, &cmd);
 789 }
 790
 791 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
 792 {
 793         struct iwl3945_host_cmd cmd = {
 794                 .id = id,
 795                 .len = sizeof(val),
 796                 .data = &val,
 797         };
 798
 799         return iwl3945_send_cmd_sync(priv, &cmd);
 800 }
 801
 802 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
 803 {
 804         return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 805 }
 806
 807 /**
 808  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 809  * @band: 2.4 or 5 GHz band
 810  * @channel: Any channel valid for the requested band
 811
 812  * In addition to setting the staging RXON, priv->band is also set.
 813  *
 814  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 815  * in the staging RXON flag structure based on the band
 816  */
 817 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
 818                                     enum ieee80211_band band,
 819                                     u16 channel)
 820 {
 821         if (!iwl3945_get_channel_info(priv, band, channel)) {
 822                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 823                                channel, band);
 824                 return -EINVAL;
 825         }
 826
 827         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 828             (priv->band == band))
 829                 return 0;
 830
 831         priv->staging_rxon.channel = cpu_to_le16(channel);
 832         if (band == IEEE80211_BAND_5GHZ)
 833                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 834         else
 835                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 836
 837         priv->band = band;
 838
 839         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 840
 841         return 0;
 842 }
 843
 844 /**
 845  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 846  *
 847  * NOTE:  This is really only useful during development and can eventually
 848  * be #ifdef'd out once the driver is stable and folks aren't actively
 849  * making changes
 850  */
 851 static int iwl3945_check_rxon_cmd(struct iwl3945_priv *priv)
 852 {
 853         int error = 0;
 854         int counter = 1;
 855         struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
 856
 857         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 858                 error |= le32_to_cpu(rxon->flags &
 859                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 860                                  RXON_FLG_RADAR_DETECT_MSK));
 861                 if (error)
 862                         IWL_WARNING("check 24G fields %d | %d\n",
 863                                     counter++, error);
 864         } else {
 865                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 866                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 867                 if (error)
 868                         IWL_WARNING("check 52 fields %d | %d\n",
 869                                     counter++, error);
 870                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 871                 if (error)
 872                         IWL_WARNING("check 52 CCK %d | %d\n",
 873                                     counter++, error);
 874         }
 875         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 876         if (error)
 877                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 878
 879         /* make sure basic rates 6Mbps and 1Mbps are supported */
 880         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 881                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 882         if (error)
 883                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 884
 885         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 886         if (error)
 887                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 888
 889         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 890                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 891         if (error)
 892                 IWL_WARNING("check CCK and short slot %d | %d\n",
 893                             counter++, error);
 894
 895         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 896                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 897         if (error)
 898                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 899                             counter++, error);
 900
 901         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 902                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 903         if (error)
 904                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 905                             counter++, error);
 906
 907         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 908                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 909                                 RXON_FLG_ANT_A_MSK)) == 0);
 910         if (error)
 911                 IWL_WARNING("check antenna %d %d\n", counter++, error);
 912
 913         if (error)
 914                 IWL_WARNING("Tuning to channel %d\n",
 915                             le16_to_cpu(rxon->channel));
 916
 917         if (error) {
 918                 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
 919                 return -1;
 920         }
 921         return 0;
 922 }
 923
 924 /**
 925  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 926  * @priv: staging_rxon is compared to active_rxon
 927  *
 928  * If the RXON structure is changing enough to require a new tune,
 929  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 930  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 931  */
 932 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
 933 {
 934
 935         /* These items are only settable from the full RXON command */
 936         if (!(iwl3945_is_associated(priv)) ||
 937             compare_ether_addr(priv->staging_rxon.bssid_addr,
 938                                priv->active_rxon.bssid_addr) ||
 939             compare_ether_addr(priv->staging_rxon.node_addr,
 940                                priv->active_rxon.node_addr) ||
 941             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 942                                priv->active_rxon.wlap_bssid_addr) ||
 943             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 944             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 945             (priv->staging_rxon.air_propagation !=
 946              priv->active_rxon.air_propagation) ||
 947             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 948                 return 1;
 949
 950         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 951          * be updated with the RXON_ASSOC command -- however only some
 952          * flag transitions are allowed using RXON_ASSOC */
 953
 954         /* Check if we are not switching bands */
 955         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 956             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 957                 return 1;
 958
 959         /* Check if we are switching association toggle */
 960         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 961                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 962                 return 1;
 963
 964         return 0;
 965 }
 966
 967 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
 968 {
 969         int rc = 0;
 970         struct iwl_rx_packet *res = NULL;
 971         struct iwl3945_rxon_assoc_cmd rxon_assoc;
 972         struct iwl3945_host_cmd cmd = {
 973                 .id = REPLY_RXON_ASSOC,
 974                 .len = sizeof(rxon_assoc),
 975                 .meta.flags = CMD_WANT_SKB,
 976                 .data = &rxon_assoc,
 977         };
 978         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
 979         const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
 980
 981         if ((rxon1->flags == rxon2->flags) &&
 982             (rxon1->filter_flags == rxon2->filter_flags) &&
 983             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 984             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 985                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 986                 return 0;
 987         }
 988
 989         rxon_assoc.flags = priv->staging_rxon.flags;
 990         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
 991         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
 992         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
 993         rxon_assoc.reserved = 0;
 994
 995         rc = iwl3945_send_cmd_sync(priv, &cmd);
 996         if (rc)
 997                 return rc;
 998
 999         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1000         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1001                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1002                 rc = -EIO;
1003         }
1004
1005         priv->alloc_rxb_skb--;
1006         dev_kfree_skb_any(cmd.meta.u.skb);
1007
1008         return rc;
1009 }
1010
1011 /**
1012  * iwl3945_commit_rxon - commit staging_rxon to hardware
1013  *
1014  * The RXON command in staging_rxon is committed to the hardware and
1015  * the active_rxon structure is updated with the new data.  This
1016  * function correctly transitions out of the RXON_ASSOC_MSK state if
1017  * a HW tune is required based on the RXON structure changes.
1018  */
1019 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1020 {
1021         /* cast away the const for active_rxon in this function */
1022         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1023         int rc = 0;
1024
1025         if (!iwl3945_is_alive(priv))
1026                 return -1;
1027
1028         /* always get timestamp with Rx frame */
1029         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1030
1031         /* select antenna */
1032         priv->staging_rxon.flags &=
1033             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1034         priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1035
1036         rc = iwl3945_check_rxon_cmd(priv);
1037         if (rc) {
1038                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1039                 return -EINVAL;
1040         }
1041
1042         /* If we don't need to send a full RXON, we can use
1043          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1044          * and other flags for the current radio configuration. */
1045         if (!iwl3945_full_rxon_required(priv)) {
1046                 rc = iwl3945_send_rxon_assoc(priv);
1047                 if (rc) {
1048                         IWL_ERROR("Error setting RXON_ASSOC "
1049                                   "configuration (%d).\n", rc);
1050                         return rc;
1051                 }
1052
1053                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1054
1055                 return 0;
1056         }
1057
1058         /* If we are currently associated and the new config requires
1059          * an RXON_ASSOC and the new config wants the associated mask enabled,
1060          * we must clear the associated from the active configuration
1061          * before we apply the new config */
1062         if (iwl3945_is_associated(priv) &&
1063             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1064                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1065                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1066
1067                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1068                                       sizeof(struct iwl3945_rxon_cmd),
1069                                       &priv->active_rxon);
1070
1071                 /* If the mask clearing failed then we set
1072                  * active_rxon back to what it was previously */
1073                 if (rc) {
1074                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1075                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1076                                   "configuration (%d).\n", rc);
1077                         return rc;
1078                 }
1079         }
1080
1081         IWL_DEBUG_INFO("Sending RXON\n"
1082                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1083                        "* channel = %d\n"
1084                        "* bssid = %pM\n",
1085                        ((priv->staging_rxon.filter_flags &
1086                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1087                        le16_to_cpu(priv->staging_rxon.channel),
1088                        priv->staging_rxon.bssid_addr);
1089
1090         /* Apply the new configuration */
1091         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1092                               sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1093         if (rc) {
1094                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1095                 return rc;
1096         }
1097
1098         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1099
1100         iwl3945_clear_stations_table(priv);
1101
1102         /* If we issue a new RXON command which required a tune then we must
1103          * send a new TXPOWER command or we won't be able to Tx any frames */
1104         rc = iwl3945_hw_reg_send_txpower(priv);
1105         if (rc) {
1106                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1107                 return rc;
1108         }
1109
1110         /* Add the broadcast address so we can send broadcast frames */
1111         if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1112             IWL_INVALID_STATION) {
1113                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1114                 return -EIO;
1115         }
1116
1117         /* If we have set the ASSOC_MSK and we are in BSS mode then
1118          * add the IWL_AP_ID to the station rate table */
1119         if (iwl3945_is_associated(priv) &&
1120             (priv->iw_mode == NL80211_IFTYPE_STATION))
1121                 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1122                     == IWL_INVALID_STATION) {
1123                         IWL_ERROR("Error adding AP address for transmit.\n");
1124                         return -EIO;
1125                 }
1126
1127         /* Init the hardware's rate fallback order based on the band */
1128         rc = iwl3945_init_hw_rate_table(priv);
1129         if (rc) {
1130                 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1131                 return -EIO;
1132         }
1133
1134         return 0;
1135 }
1136
1137 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1138 {
1139         struct iwl_bt_cmd bt_cmd = {
1140                 .flags = 3,
1141                 .lead_time = 0xAA,
1142                 .max_kill = 1,
1143                 .kill_ack_mask = 0,
1144                 .kill_cts_mask = 0,
1145         };
1146
1147         return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1148                                         sizeof(bt_cmd), &bt_cmd);
1149 }
1150
1151 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1152 {
1153         int rc = 0;
1154         struct iwl_rx_packet *res;
1155         struct iwl3945_host_cmd cmd = {
1156                 .id = REPLY_SCAN_ABORT_CMD,
1157                 .meta.flags = CMD_WANT_SKB,
1158         };
1159
1160         /* If there isn't a scan actively going on in the hardware
1161          * then we are in between scan bands and not actually
1162          * actively scanning, so don't send the abort command */
1163         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1164                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1165                 return 0;
1166         }
1167
1168         rc = iwl3945_send_cmd_sync(priv, &cmd);
1169         if (rc) {
1170                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1171                 return rc;
1172         }
1173
1174         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1175         if (res->u.status != CAN_ABORT_STATUS) {
1176                 /* The scan abort will return 1 for success or
1177                  * 2 for "failure".  A failure condition can be
1178                  * due to simply not being in an active scan which
1179                  * can occur if we send the scan abort before we
1180                  * the microcode has notified us that a scan is
1181                  * completed. */
1182                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1183                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1184                 clear_bit(STATUS_SCAN_HW, &priv->status);
1185         }
1186
1187         dev_kfree_skb_any(cmd.meta.u.skb);
1188
1189         return rc;
1190 }
1191
1192 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1193                                         struct iwl3945_cmd *cmd,
1194                                         struct sk_buff *skb)
1195 {
1196         return 1;
1197 }
1198
1199 /*
1200  * CARD_STATE_CMD
1201  *
1202  * Use: Sets the device's internal card state to enable, disable, or halt
1203  *
1204  * When in the 'enable' state the card operates as normal.
1205  * When in the 'disable' state, the card enters into a low power mode.
1206  * When in the 'halt' state, the card is shut down and must be fully
1207  * restarted to come back on.
1208  */
1209 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1210 {
1211         struct iwl3945_host_cmd cmd = {
1212                 .id = REPLY_CARD_STATE_CMD,
1213                 .len = sizeof(u32),
1214                 .data = &flags,
1215                 .meta.flags = meta_flag,
1216         };
1217
1218         if (meta_flag & CMD_ASYNC)
1219                 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1220
1221         return iwl3945_send_cmd(priv, &cmd);
1222 }
1223
1224 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1225                                      struct iwl3945_cmd *cmd, struct sk_buff *skb)
1226 {
1227         struct iwl_rx_packet *res = NULL;
1228
1229         if (!skb) {
1230                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1231                 return 1;
1232         }
1233
1234         res = (struct iwl_rx_packet *)skb->data;
1235         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1236                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1237                           res->hdr.flags);
1238                 return 1;
1239         }
1240
1241         switch (res->u.add_sta.status) {
1242         case ADD_STA_SUCCESS_MSK:
1243                 break;
1244         default:
1245                 break;
1246         }
1247
1248         /* We didn't cache the SKB; let the caller free it */
1249         return 1;
1250 }
1251
1252 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1253                          struct iwl3945_addsta_cmd *sta, u8 flags)
1254 {
1255         struct iwl_rx_packet *res = NULL;
1256         int rc = 0;
1257         struct iwl3945_host_cmd cmd = {
1258                 .id = REPLY_ADD_STA,
1259                 .len = sizeof(struct iwl3945_addsta_cmd),
1260                 .meta.flags = flags,
1261                 .data = sta,
1262         };
1263
1264         if (flags & CMD_ASYNC)
1265                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1266         else
1267                 cmd.meta.flags |= CMD_WANT_SKB;
1268
1269         rc = iwl3945_send_cmd(priv, &cmd);
1270
1271         if (rc || (flags & CMD_ASYNC))
1272                 return rc;
1273
1274         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1275         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1276                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1277                           res->hdr.flags);
1278                 rc = -EIO;
1279         }
1280
1281         if (rc == 0) {
1282                 switch (res->u.add_sta.status) {
1283                 case ADD_STA_SUCCESS_MSK:
1284                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1285                         break;
1286                 default:
1287                         rc = -EIO;
1288                         IWL_WARNING("REPLY_ADD_STA failed\n");
1289                         break;
1290                 }
1291         }
1292
1293         priv->alloc_rxb_skb--;
1294         dev_kfree_skb_any(cmd.meta.u.skb);
1295
1296         return rc;
1297 }
1298
1299 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1300                                    struct ieee80211_key_conf *keyconf,
1301                                    u8 sta_id)
1302 {
1303         unsigned long flags;
1304         __le16 key_flags = 0;
1305
1306         switch (keyconf->alg) {
1307         case ALG_CCMP:
1308                 key_flags |= STA_KEY_FLG_CCMP;
1309                 key_flags |= cpu_to_le16(
1310                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1311                 key_flags &= ~STA_KEY_FLG_INVALID;
1312                 break;
1313         case ALG_TKIP:
1314         case ALG_WEP:
1315         default:
1316                 return -EINVAL;
1317         }
1318         spin_lock_irqsave(&priv->sta_lock, flags);
1319         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1320         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1321         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1322                keyconf->keylen);
1323
1324         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1325                keyconf->keylen);
1326         priv->stations[sta_id].sta.key.key_flags = key_flags;
1327         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1328         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1329
1330         spin_unlock_irqrestore(&priv->sta_lock, flags);
1331
1332         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1333         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1334         return 0;
1335 }
1336
1337 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1338 {
1339         unsigned long flags;
1340
1341         spin_lock_irqsave(&priv->sta_lock, flags);
1342         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1343         memset(&priv->stations[sta_id].sta.key, 0,
1344                 sizeof(struct iwl4965_keyinfo));
1345         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1346         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1347         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1348         spin_unlock_irqrestore(&priv->sta_lock, flags);
1349
1350         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1351         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1352         return 0;
1353 }
1354
1355 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1356 {
1357         struct list_head *element;
1358
1359         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1360                        priv->frames_count);
1361
1362         while (!list_empty(&priv->free_frames)) {
1363                 element = priv->free_frames.next;
1364                 list_del(element);
1365                 kfree(list_entry(element, struct iwl3945_frame, list));
1366                 priv->frames_count--;
1367         }
1368
1369         if (priv->frames_count) {
1370                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1371                             priv->frames_count);
1372                 priv->frames_count = 0;
1373         }
1374 }
1375
1376 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1377 {
1378         struct iwl3945_frame *frame;
1379         struct list_head *element;
1380         if (list_empty(&priv->free_frames)) {
1381                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1382                 if (!frame) {
1383                         IWL_ERROR("Could not allocate frame!\n");
1384                         return NULL;
1385                 }
1386
1387                 priv->frames_count++;
1388                 return frame;
1389         }
1390
1391         element = priv->free_frames.next;
1392         list_del(element);
1393         return list_entry(element, struct iwl3945_frame, list);
1394 }
1395
1396 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1397 {
1398         memset(frame, 0, sizeof(*frame));
1399         list_add(&frame->list, &priv->free_frames);
1400 }
1401
1402 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1403                                 struct ieee80211_hdr *hdr,
1404                                 int left)
1405 {
1406
1407         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1408             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1409              (priv->iw_mode != NL80211_IFTYPE_AP)))
1410                 return 0;
1411
1412         if (priv->ibss_beacon->len > left)
1413                 return 0;
1414
1415         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1416
1417         return priv->ibss_beacon->len;
1418 }
1419
1420 static u8 iwl3945_rate_get_lowest_plcp(struct iwl3945_priv *priv)
1421 {
1422         u8 i;
1423         int rate_mask;
1424
1425         /* Set rate mask*/
1426         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1427                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1428         else
1429                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
1430
1431         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1432              i = iwl3945_rates[i].next_ieee) {
1433                 if (rate_mask & (1 << i))
1434                         return iwl3945_rates[i].plcp;
1435         }
1436
1437         /* No valid rate was found. Assign the lowest one */
1438         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1439                 return IWL_RATE_1M_PLCP;
1440         else
1441                 return IWL_RATE_6M_PLCP;
1442 }
1443
1444 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1445 {
1446         struct iwl3945_frame *frame;
1447         unsigned int frame_size;
1448         int rc;
1449         u8 rate;
1450
1451         frame = iwl3945_get_free_frame(priv);
1452
1453         if (!frame) {
1454                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1455                           "command.\n");
1456                 return -ENOMEM;
1457         }
1458
1459         rate = iwl3945_rate_get_lowest_plcp(priv);
1460
1461         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1462
1463         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1464                               &frame->u.cmd[0]);
1465
1466         iwl3945_free_frame(priv, frame);
1467
1468         return rc;
1469 }
1470
1471 /******************************************************************************
1472  *
1473  * EEPROM related functions
1474  *
1475  ******************************************************************************/
1476
1477 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1478 {
1479         memcpy(mac, priv->eeprom.mac_address, 6);
1480 }
1481
1482 /*
1483  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1484  * embedded controller) as EEPROM reader; each read is a series of pulses
1485  * to/from the EEPROM chip, not a single event, so even reads could conflict
1486  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1487  * simply claims ownership, which should be safe when this function is called
1488  * (i.e. before loading uCode!).
1489  */
1490 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1491 {
1492         _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1493         return 0;
1494 }
1495
1496 /**
1497  * iwl3945_eeprom_init - read EEPROM contents
1498  *
1499  * Load the EEPROM contents from adapter into priv->eeprom
1500  *
1501  * NOTE:  This routine uses the non-debug IO access functions.
1502  */
1503 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1504 {
1505         u16 *e = (u16 *)&priv->eeprom;
1506         u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1507         int sz = sizeof(priv->eeprom);
1508         int ret;
1509         u16 addr;
1510
1511         /* The EEPROM structure has several padding buffers within it
1512          * and when adding new EEPROM maps is subject to programmer errors
1513          * which may be very difficult to identify without explicitly
1514          * checking the resulting size of the eeprom map. */
1515         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1516
1517         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1518                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
1519                 return -ENOENT;
1520         }
1521
1522         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1523         ret = iwl3945_eeprom_acquire_semaphore(priv);
1524         if (ret < 0) {
1525                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1526                 return -ENOENT;
1527         }
1528
1529         /* eeprom is an array of 16bit values */
1530         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1531                 u32 r;
1532
1533                 _iwl3945_write32(priv, CSR_EEPROM_REG,
1534                                  CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1535                 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1536                 ret = iwl3945_poll_direct_bit(priv, CSR_EEPROM_REG,
1537                                               CSR_EEPROM_REG_READ_VALID_MSK,
1538                                               IWL_EEPROM_ACCESS_TIMEOUT);
1539                 if (ret < 0) {
1540                         IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
1541                         return ret;
1542                 }
1543
1544                 r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1545                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1546         }
1547
1548         return 0;
1549 }
1550
1551 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1552 {
1553         if (priv->hw_setting.shared_virt)
1554                 pci_free_consistent(priv->pci_dev,
1555                                     sizeof(struct iwl3945_shared),
1556                                     priv->hw_setting.shared_virt,
1557                                     priv->hw_setting.shared_phys);
1558 }
1559
1560 /**
1561  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1562  *
1563  * return : set the bit for each supported rate insert in ie
1564  */
1565 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1566                                     u16 basic_rate, int *left)
1567 {
1568         u16 ret_rates = 0, bit;
1569         int i;
1570         u8 *cnt = ie;
1571         u8 *rates = ie + 1;
1572
1573         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1574                 if (bit & supported_rate) {
1575                         ret_rates |= bit;
1576                         rates[*cnt] = iwl3945_rates[i].ieee |
1577                                 ((bit & basic_rate) ? 0x80 : 0x00);
1578                         (*cnt)++;
1579                         (*left)--;
1580                         if ((*left <= 0) ||
1581                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1582                                 break;
1583                 }
1584         }
1585
1586         return ret_rates;
1587 }
1588
1589 /**
1590  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1591  */
1592 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1593                               struct ieee80211_mgmt *frame,
1594                               int left)
1595 {
1596         int len = 0;
1597         u8 *pos = NULL;
1598         u16 active_rates, ret_rates, cck_rates;
1599
1600         /* Make sure there is enough space for the probe request,
1601          * two mandatory IEs and the data */
1602         left -= 24;
1603         if (left < 0)
1604                 return 0;
1605         len += 24;
1606
1607         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1608         memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1609         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1610         memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1611         frame->seq_ctrl = 0;
1612
1613         /* fill in our indirect SSID IE */
1614         /* ...next IE... */
1615
1616         left -= 2;
1617         if (left < 0)
1618                 return 0;
1619         len += 2;
1620         pos = &(frame->u.probe_req.variable[0]);
1621         *pos++ = WLAN_EID_SSID;
1622         *pos++ = 0;
1623
1624         /* fill in supported rate */
1625         /* ...next IE... */
1626         left -= 2;
1627         if (left < 0)
1628                 return 0;
1629
1630         /* ... fill it in... */
1631         *pos++ = WLAN_EID_SUPP_RATES;
1632         *pos = 0;
1633
1634         priv->active_rate = priv->rates_mask;
1635         active_rates = priv->active_rate;
1636         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1637
1638         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1639         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1640                         priv->active_rate_basic, &left);
1641         active_rates &= ~ret_rates;
1642
1643         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1644                                  priv->active_rate_basic, &left);
1645         active_rates &= ~ret_rates;
1646
1647         len += 2 + *pos;
1648         pos += (*pos) + 1;
1649         if (active_rates == 0)
1650                 goto fill_end;
1651
1652         /* fill in supported extended rate */
1653         /* ...next IE... */
1654         left -= 2;
1655         if (left < 0)
1656                 return 0;
1657         /* ... fill it in... */
1658         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1659         *pos = 0;
1660         iwl3945_supported_rate_to_ie(pos, active_rates,
1661                                  priv->active_rate_basic, &left);
1662         if (*pos > 0)
1663                 len += 2 + *pos;
1664
1665  fill_end:
1666         return (u16)len;
1667 }
1668
1669 /*
1670  * QoS  support
1671 */
1672 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1673                                        struct iwl_qosparam_cmd *qos)
1674 {
1675
1676         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1677                                 sizeof(struct iwl_qosparam_cmd), qos);
1678 }
1679
1680 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1681 {
1682         u16 cw_min = 15;
1683         u16 cw_max = 1023;
1684         u8 aifs = 2;
1685         u8 is_legacy = 0;
1686         unsigned long flags;
1687         int i;
1688
1689         spin_lock_irqsave(&priv->lock, flags);
1690         priv->qos_data.qos_active = 0;
1691
1692         /* QoS always active in AP and ADHOC mode
1693          * In STA mode wait for association
1694          */
1695         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
1696             priv->iw_mode == NL80211_IFTYPE_AP)
1697                 priv->qos_data.qos_active = 1;
1698         else
1699                 priv->qos_data.qos_active = 0;
1700
1701
1702         /* check for legacy mode */
1703         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
1704              (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
1705             (priv->iw_mode == NL80211_IFTYPE_STATION &&
1706              (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
1707                 cw_min = 31;
1708                 is_legacy = 1;
1709         }
1710
1711         if (priv->qos_data.qos_active)
1712                 aifs = 3;
1713
1714         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1715         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1716         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1717         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1718         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1719
1720         if (priv->qos_data.qos_active) {
1721                 i = 1;
1722                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1723                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1724                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1725                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1726                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1727
1728                 i = 2;
1729                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1730                         cpu_to_le16((cw_min + 1) / 2 - 1);
1731                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1732                         cpu_to_le16(cw_max);
1733                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1734                 if (is_legacy)
1735                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1736                                 cpu_to_le16(6016);
1737                 else
1738                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1739                                 cpu_to_le16(3008);
1740                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1741
1742                 i = 3;
1743                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1744                         cpu_to_le16((cw_min + 1) / 4 - 1);
1745                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1746                         cpu_to_le16((cw_max + 1) / 2 - 1);
1747                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1748                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1749                 if (is_legacy)
1750                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1751                                 cpu_to_le16(3264);
1752                 else
1753                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1754                                 cpu_to_le16(1504);
1755         } else {
1756                 for (i = 1; i < 4; i++) {
1757                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1758                                 cpu_to_le16(cw_min);
1759                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1760                                 cpu_to_le16(cw_max);
1761                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1762                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1763                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1764                 }
1765         }
1766         IWL_DEBUG_QOS("set QoS to default \n");
1767
1768         spin_unlock_irqrestore(&priv->lock, flags);
1769 }
1770
1771 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
1772 {
1773         unsigned long flags;
1774
1775         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1776                 return;
1777
1778         spin_lock_irqsave(&priv->lock, flags);
1779         priv->qos_data.def_qos_parm.qos_flags = 0;
1780
1781         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1782             !priv->qos_data.qos_cap.q_AP.txop_request)
1783                 priv->qos_data.def_qos_parm.qos_flags |=
1784                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1785
1786         if (priv->qos_data.qos_active)
1787                 priv->qos_data.def_qos_parm.qos_flags |=
1788                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1789
1790         spin_unlock_irqrestore(&priv->lock, flags);
1791
1792         if (force || iwl3945_is_associated(priv)) {
1793                 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
1794                               priv->qos_data.qos_active);
1795
1796                 iwl3945_send_qos_params_command(priv,
1797                                 &(priv->qos_data.def_qos_parm));
1798         }
1799 }
1800
1801 /*
1802  * Power management (not Tx power!) functions
1803  */
1804 #define MSEC_TO_USEC 1024
1805
1806
1807 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1808 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1809 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1810 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1811                                      __constant_cpu_to_le32(X1), \
1812                                      __constant_cpu_to_le32(X2), \
1813                                      __constant_cpu_to_le32(X3), \
1814                                      __constant_cpu_to_le32(X4)}
1815
1816 /* default power management (not Tx power) table values */
1817 /* for TIM  0-10 */
1818 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
1819         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1820         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1821         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1822         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1823         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1824         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1825 };
1826
1827 /* for TIM > 10 */
1828 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
1829         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1830         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1831                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1832         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1833                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1834         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1835                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1836         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1837         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1838                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1839 };
1840
1841 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
1842 {
1843         int rc = 0, i;
1844         struct iwl3945_power_mgr *pow_data;
1845         int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
1846         u16 pci_pm;
1847
1848         IWL_DEBUG_POWER("Initialize power \n");
1849
1850         pow_data = &(priv->power_data);
1851
1852         memset(pow_data, 0, sizeof(*pow_data));
1853
1854         pow_data->active_index = IWL_POWER_RANGE_0;
1855         pow_data->dtim_val = 0xffff;
1856
1857         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1858         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1859
1860         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1861         if (rc != 0)
1862                 return 0;
1863         else {
1864                 struct iwl_powertable_cmd *cmd;
1865
1866                 IWL_DEBUG_POWER("adjust power command flags\n");
1867
1868                 for (i = 0; i < IWL_POWER_AC; i++) {
1869                         cmd = &pow_data->pwr_range_0[i].cmd;
1870
1871                         if (pci_pm & 0x1)
1872                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1873                         else
1874                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1875                 }
1876         }
1877         return rc;
1878 }
1879
1880 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1881                                 struct iwl_powertable_cmd *cmd, u32 mode)
1882 {
1883         int rc = 0, i;
1884         u8 skip;
1885         u32 max_sleep = 0;
1886         struct iwl3945_power_vec_entry *range;
1887         u8 period = 0;
1888         struct iwl3945_power_mgr *pow_data;
1889
1890         if (mode > IWL_POWER_INDEX_5) {
1891                 IWL_DEBUG_POWER("Error invalid power mode \n");
1892                 return -1;
1893         }
1894         pow_data = &(priv->power_data);
1895
1896         if (pow_data->active_index == IWL_POWER_RANGE_0)
1897                 range = &pow_data->pwr_range_0[0];
1898         else
1899                 range = &pow_data->pwr_range_1[1];
1900
1901         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1902
1903 #ifdef IWL_MAC80211_DISABLE
1904         if (priv->assoc_network != NULL) {
1905                 unsigned long flags;
1906
1907                 period = priv->assoc_network->tim.tim_period;
1908         }
1909 #endif  /*IWL_MAC80211_DISABLE */
1910         skip = range[mode].no_dtim;
1911
1912         if (period == 0) {
1913                 period = 1;
1914                 skip = 0;
1915         }
1916
1917         if (skip == 0) {
1918                 max_sleep = period;
1919                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1920         } else {
1921                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1922                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1923                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1924         }
1925
1926         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1927                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1928                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1929         }
1930
1931         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1932         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1933         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1934         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1935                         le32_to_cpu(cmd->sleep_interval[0]),
1936                         le32_to_cpu(cmd->sleep_interval[1]),
1937                         le32_to_cpu(cmd->sleep_interval[2]),
1938                         le32_to_cpu(cmd->sleep_interval[3]),
1939                         le32_to_cpu(cmd->sleep_interval[4]));
1940
1941         return rc;
1942 }
1943
1944 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
1945 {
1946         u32 uninitialized_var(final_mode);
1947         int rc;
1948         struct iwl_powertable_cmd cmd;
1949
1950         /* If on battery, set to 3,
1951          * if plugged into AC power, set to CAM ("continuously aware mode"),
1952          * else user level */
1953         switch (mode) {
1954         case IWL_POWER_BATTERY:
1955                 final_mode = IWL_POWER_INDEX_3;
1956                 break;
1957         case IWL_POWER_AC:
1958                 final_mode = IWL_POWER_MODE_CAM;
1959                 break;
1960         default:
1961                 final_mode = mode;
1962                 break;
1963         }
1964
1965         iwl3945_update_power_cmd(priv, &cmd, final_mode);
1966
1967         /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1968         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD,
1969                                 sizeof(struct iwl3945_powertable_cmd), &cmd);
1970
1971         if (final_mode == IWL_POWER_MODE_CAM)
1972                 clear_bit(STATUS_POWER_PMI, &priv->status);
1973         else
1974                 set_bit(STATUS_POWER_PMI, &priv->status);
1975
1976         return rc;
1977 }
1978
1979 /**
1980  * iwl3945_scan_cancel - Cancel any currently executing HW scan
1981  *
1982  * NOTE: priv->mutex is not required before calling this function
1983  */
1984 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
1985 {
1986         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1987                 clear_bit(STATUS_SCANNING, &priv->status);
1988                 return 0;
1989         }
1990
1991         if (test_bit(STATUS_SCANNING, &priv->status)) {
1992                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1993                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1994                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1995                         queue_work(priv->workqueue, &priv->abort_scan);
1996
1997                 } else
1998                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1999
2000                 return test_bit(STATUS_SCANNING, &priv->status);
2001         }
2002
2003         return 0;
2004 }
2005
2006 /**
2007  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2008  * @ms: amount of time to wait (in milliseconds) for scan to abort
2009  *
2010  * NOTE: priv->mutex must be held before calling this function
2011  */
2012 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2013 {
2014         unsigned long now = jiffies;
2015         int ret;
2016
2017         ret = iwl3945_scan_cancel(priv);
2018         if (ret && ms) {
2019                 mutex_unlock(&priv->mutex);
2020                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2021                                 test_bit(STATUS_SCANNING, &priv->status))
2022                         msleep(1);
2023                 mutex_lock(&priv->mutex);
2024
2025                 return test_bit(STATUS_SCANNING, &priv->status);
2026         }
2027
2028         return ret;
2029 }
2030
2031 #define MAX_UCODE_BEACON_INTERVAL       1024
2032 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2033
2034 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2035 {
2036         u16 new_val = 0;
2037         u16 beacon_factor = 0;
2038
2039         beacon_factor =
2040             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2041                 / MAX_UCODE_BEACON_INTERVAL;
2042         new_val = beacon_val / beacon_factor;
2043
2044         return cpu_to_le16(new_val);
2045 }
2046
2047 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2048 {
2049         u64 interval_tm_unit;
2050         u64 tsf, result;
2051         unsigned long flags;
2052         struct ieee80211_conf *conf = NULL;
2053         u16 beacon_int = 0;
2054
2055         conf = ieee80211_get_hw_conf(priv->hw);
2056
2057         spin_lock_irqsave(&priv->lock, flags);
2058         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
2059         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2060
2061         tsf = priv->timestamp;
2062
2063         beacon_int = priv->beacon_int;
2064         spin_unlock_irqrestore(&priv->lock, flags);
2065
2066         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
2067                 if (beacon_int == 0) {
2068                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2069                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2070                 } else {
2071                         priv->rxon_timing.beacon_interval =
2072                                 cpu_to_le16(beacon_int);
2073                         priv->rxon_timing.beacon_interval =
2074                             iwl3945_adjust_beacon_interval(
2075                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2076                 }
2077
2078                 priv->rxon_timing.atim_window = 0;
2079         } else {
2080                 priv->rxon_timing.beacon_interval =
2081                         iwl3945_adjust_beacon_interval(conf->beacon_int);
2082                 /* TODO: we need to get atim_window from upper stack
2083                  * for now we set to 0 */
2084                 priv->rxon_timing.atim_window = 0;
2085         }
2086
2087         interval_tm_unit =
2088                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2089         result = do_div(tsf, interval_tm_unit);
2090         priv->rxon_timing.beacon_init_val =
2091             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2092
2093         IWL_DEBUG_ASSOC
2094             ("beacon interval %d beacon timer %d beacon tim %d\n",
2095                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2096                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2097                 le16_to_cpu(priv->rxon_timing.atim_window));
2098 }
2099
2100 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2101 {
2102         if (!iwl3945_is_ready_rf(priv)) {
2103                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2104                 return -EIO;
2105         }
2106
2107         if (test_bit(STATUS_SCANNING, &priv->status)) {
2108                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2109                 return -EAGAIN;
2110         }
2111
2112         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2113                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2114                                "Queuing.\n");
2115                 return -EAGAIN;
2116         }
2117
2118         IWL_DEBUG_INFO("Starting scan...\n");
2119         if (priv->cfg->sku & IWL_SKU_G)
2120                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
2121         if (priv->cfg->sku & IWL_SKU_A)
2122                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
2123         set_bit(STATUS_SCANNING, &priv->status);
2124         priv->scan_start = jiffies;
2125         priv->scan_pass_start = priv->scan_start;
2126
2127         queue_work(priv->workqueue, &priv->request_scan);
2128
2129         return 0;
2130 }
2131
2132 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2133 {
2134         struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2135
2136         if (hw_decrypt)
2137                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2138         else
2139                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2140
2141         return 0;
2142 }
2143
2144 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
2145                                           enum ieee80211_band band)
2146 {
2147         if (band == IEEE80211_BAND_5GHZ) {
2148                 priv->staging_rxon.flags &=
2149                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2150                       | RXON_FLG_CCK_MSK);
2151                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2152         } else {
2153                 /* Copied from iwl3945_bg_post_associate() */
2154                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2155                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2156                 else
2157                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2158
2159                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2160                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2161
2162                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2163                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2164                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2165         }
2166 }
2167
2168 /*
2169  * initialize rxon structure with default values from eeprom
2170  */
2171 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv,
2172                                               int mode)
2173 {
2174         const struct iwl3945_channel_info *ch_info;
2175
2176         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2177
2178         switch (mode) {
2179         case NL80211_IFTYPE_AP:
2180                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2181                 break;
2182
2183         case NL80211_IFTYPE_STATION:
2184                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2185                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2186                 break;
2187
2188         case NL80211_IFTYPE_ADHOC:
2189                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2190                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2191                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2192                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2193                 break;
2194
2195         case NL80211_IFTYPE_MONITOR:
2196                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2197                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2198                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2199                 break;
2200         default:
2201                 IWL_ERROR("Unsupported interface type %d\n", mode);
2202                 break;
2203         }
2204
2205 #if 0
2206         /* TODO:  Figure out when short_preamble would be set and cache from
2207          * that */
2208         if (!hw_to_local(priv->hw)->short_preamble)
2209                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2210         else
2211                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2212 #endif
2213
2214         ch_info = iwl3945_get_channel_info(priv, priv->band,
2215                                        le16_to_cpu(priv->active_rxon.channel));
2216
2217         if (!ch_info)
2218                 ch_info = &priv->channel_info[0];
2219
2220         /*
2221          * in some case A channels are all non IBSS
2222          * in this case force B/G channel
2223          */
2224         if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
2225                 ch_info = &priv->channel_info[0];
2226
2227         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2228         if (is_channel_a_band(ch_info))
2229                 priv->band = IEEE80211_BAND_5GHZ;
2230         else
2231                 priv->band = IEEE80211_BAND_2GHZ;
2232
2233         iwl3945_set_flags_for_phymode(priv, priv->band);
2234
2235         priv->staging_rxon.ofdm_basic_rates =
2236             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2237         priv->staging_rxon.cck_basic_rates =
2238             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2239 }
2240
2241 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2242 {
2243         if (mode == NL80211_IFTYPE_ADHOC) {
2244                 const struct iwl3945_channel_info *ch_info;
2245
2246                 ch_info = iwl3945_get_channel_info(priv,
2247                         priv->band,
2248                         le16_to_cpu(priv->staging_rxon.channel));
2249
2250                 if (!ch_info || !is_channel_ibss(ch_info)) {
2251                         IWL_ERROR("channel %d not IBSS channel\n",
2252                                   le16_to_cpu(priv->staging_rxon.channel));
2253                         return -EINVAL;
2254                 }
2255         }
2256
2257         iwl3945_connection_init_rx_config(priv, mode);
2258         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2259
2260         iwl3945_clear_stations_table(priv);
2261
2262         /* don't commit rxon if rf-kill is on*/
2263         if (!iwl3945_is_ready_rf(priv))
2264                 return -EAGAIN;
2265
2266         cancel_delayed_work(&priv->scan_check);
2267         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2268                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2269                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2270                 return -EAGAIN;
2271         }
2272
2273         iwl3945_commit_rxon(priv);
2274
2275         return 0;
2276 }
2277
2278 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2279                                       struct ieee80211_tx_info *info,
2280                                       struct iwl3945_cmd *cmd,
2281                                       struct sk_buff *skb_frag,
2282                                       int last_frag)
2283 {
2284         struct iwl3945_hw_key *keyinfo =
2285             &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
2286
2287         switch (keyinfo->alg) {
2288         case ALG_CCMP:
2289                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2290                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2291                 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
2292                 break;
2293
2294         case ALG_TKIP:
2295 #if 0
2296                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2297
2298                 if (last_frag)
2299                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2300                                8);
2301                 else
2302                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2303 #endif
2304                 break;
2305
2306         case ALG_WEP:
2307                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2308                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2309
2310                 if (keyinfo->keylen == 13)
2311                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2312
2313                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2314
2315                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2316                              "with key %d\n", info->control.hw_key->hw_key_idx);
2317                 break;
2318
2319         default:
2320                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2321                 break;
2322         }
2323 }
2324
2325 /*
2326  * handle build REPLY_TX command notification.
2327  */
2328 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2329                                   struct iwl3945_cmd *cmd,
2330                                   struct ieee80211_tx_info *info,
2331                                   struct ieee80211_hdr *hdr,
2332                                   int is_unicast, u8 std_id)
2333 {
2334         __le16 fc = hdr->frame_control;
2335         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2336         u8 rc_flags = info->control.rates[0].flags;
2337
2338         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2339         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
2340                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2341                 if (ieee80211_is_mgmt(fc))
2342                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2343                 if (ieee80211_is_probe_resp(fc) &&
2344                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2345                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2346         } else {
2347                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2348                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2349         }
2350
2351         cmd->cmd.tx.sta_id = std_id;
2352         if (ieee80211_has_morefrags(fc))
2353                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2354
2355         if (ieee80211_is_data_qos(fc)) {
2356                 u8 *qc = ieee80211_get_qos_ctl(hdr);
2357                 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
2358                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2359         } else {
2360                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2361         }
2362
2363         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
2364                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2365                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2366         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
2367                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2368                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2369         }
2370
2371         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2372                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2373
2374         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2375         if (ieee80211_is_mgmt(fc)) {
2376                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2377                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2378                 else
2379                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2380         } else {
2381                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2382 #ifdef CONFIG_IWL3945_LEDS
2383                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2384 #endif
2385         }
2386
2387         cmd->cmd.tx.driver_txop = 0;
2388         cmd->cmd.tx.tx_flags = tx_flags;
2389         cmd->cmd.tx.next_frame_len = 0;
2390 }
2391
2392 /**
2393  * iwl3945_get_sta_id - Find station's index within station table
2394  */
2395 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2396 {
2397         int sta_id;
2398         u16 fc = le16_to_cpu(hdr->frame_control);
2399
2400         /* If this frame is broadcast or management, use broadcast station id */
2401         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2402             is_multicast_ether_addr(hdr->addr1))
2403                 return priv->hw_setting.bcast_sta_id;
2404
2405         switch (priv->iw_mode) {
2406
2407         /* If we are a client station in a BSS network, use the special
2408          * AP station entry (that's the only station we communicate with) */
2409         case NL80211_IFTYPE_STATION:
2410                 return IWL_AP_ID;
2411
2412         /* If we are an AP, then find the station, or use BCAST */
2413         case NL80211_IFTYPE_AP:
2414                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2415                 if (sta_id != IWL_INVALID_STATION)
2416                         return sta_id;
2417                 return priv->hw_setting.bcast_sta_id;
2418
2419         /* If this frame is going out to an IBSS network, find the station,
2420          * or create a new station table entry */
2421         case NL80211_IFTYPE_ADHOC: {
2422                 /* Create new station table entry */
2423                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2424                 if (sta_id != IWL_INVALID_STATION)
2425                         return sta_id;
2426
2427                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2428
2429                 if (sta_id != IWL_INVALID_STATION)
2430                         return sta_id;
2431
2432                 IWL_DEBUG_DROP("Station %pM not in station map. "
2433                                "Defaulting to broadcast...\n",
2434                                hdr->addr1);
2435                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2436                 return priv->hw_setting.bcast_sta_id;
2437         }
2438         /* If we are in monitor mode, use BCAST. This is required for
2439          * packet injection. */
2440         case NL80211_IFTYPE_MONITOR:
2441                 return priv->hw_setting.bcast_sta_id;
2442
2443         default:
2444                 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
2445                 return priv->hw_setting.bcast_sta_id;
2446         }
2447 }
2448
2449 /*
2450  * start REPLY_TX command process
2451  */
2452 static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
2453 {
2454         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2455         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2456         struct iwl3945_tfd_frame *tfd;
2457         u32 *control_flags;
2458         int txq_id = skb_get_queue_mapping(skb);
2459         struct iwl3945_tx_queue *txq = NULL;
2460         struct iwl3945_queue *q = NULL;
2461         dma_addr_t phys_addr;
2462         dma_addr_t txcmd_phys;
2463         struct iwl3945_cmd *out_cmd = NULL;
2464         u16 len, idx, len_org, hdr_len;
2465         u8 id;
2466         u8 unicast;
2467         u8 sta_id;
2468         u8 tid = 0;
2469         u16 seq_number = 0;
2470         __le16 fc;
2471         u8 wait_write_ptr = 0;
2472         u8 *qc = NULL;
2473         unsigned long flags;
2474         int rc;
2475
2476         spin_lock_irqsave(&priv->lock, flags);
2477         if (iwl3945_is_rfkill(priv)) {
2478                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2479                 goto drop_unlock;
2480         }
2481
2482         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2483                 IWL_ERROR("ERROR: No TX rate available.\n");
2484                 goto drop_unlock;
2485         }
2486
2487         unicast = !is_multicast_ether_addr(hdr->addr1);
2488         id = 0;
2489
2490         fc = hdr->frame_control;
2491
2492 #ifdef CONFIG_IWL3945_DEBUG
2493         if (ieee80211_is_auth(fc))
2494                 IWL_DEBUG_TX("Sending AUTH frame\n");
2495         else if (ieee80211_is_assoc_req(fc))
2496                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2497         else if (ieee80211_is_reassoc_req(fc))
2498                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2499 #endif
2500
2501         /* drop all data frame if we are not associated */
2502         if (ieee80211_is_data(fc) &&
2503             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2504             (!iwl3945_is_associated(priv) ||
2505              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
2506                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2507                 goto drop_unlock;
2508         }
2509
2510         spin_unlock_irqrestore(&priv->lock, flags);
2511
2512         hdr_len = ieee80211_hdrlen(fc);
2513
2514         /* Find (or create) index into station table for destination station */
2515         sta_id = iwl3945_get_sta_id(priv, hdr);
2516         if (sta_id == IWL_INVALID_STATION) {
2517                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
2518                                hdr->addr1);
2519                 goto drop;
2520         }
2521
2522         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2523
2524         if (ieee80211_is_data_qos(fc)) {
2525                 qc = ieee80211_get_qos_ctl(hdr);
2526                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
2527                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2528                                 IEEE80211_SCTL_SEQ;
2529                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2530                         (hdr->seq_ctrl &
2531                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2532                 seq_number += 0x10;
2533         }
2534
2535         /* Descriptor for chosen Tx queue */
2536         txq = &priv->txq[txq_id];
2537         q = &txq->q;
2538
2539         spin_lock_irqsave(&priv->lock, flags);
2540
2541         /* Set up first empty TFD within this queue's circular TFD buffer */
2542         tfd = &txq->bd[q->write_ptr];
2543         memset(tfd, 0, sizeof(*tfd));
2544         control_flags = (u32 *) tfd;
2545         idx = get_cmd_index(q, q->write_ptr, 0);
2546
2547         /* Set up driver data for this TFD */
2548         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2549         txq->txb[q->write_ptr].skb[0] = skb;
2550
2551         /* Init first empty entry in queue's array of Tx/cmd buffers */
2552         out_cmd = &txq->cmd[idx];
2553         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2554         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2555
2556         /*
2557          * Set up the Tx-command (not MAC!) header.
2558          * Store the chosen Tx queue and TFD index within the sequence field;
2559          * after Tx, uCode's Tx response will return this value so driver can
2560          * locate the frame within the tx queue and do post-tx processing.
2561          */
2562         out_cmd->hdr.cmd = REPLY_TX;
2563         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2564                                 INDEX_TO_SEQ(q->write_ptr)));
2565
2566         /* Copy MAC header from skb into command buffer */
2567         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2568
2569         /*
2570          * Use the first empty entry in this queue's command buffer array
2571          * to contain the Tx command and MAC header concatenated together
2572          * (payload data will be in another buffer).
2573          * Size of this varies, due to varying MAC header length.
2574          * If end is not dword aligned, we'll have 2 extra bytes at the end
2575          * of the MAC header (device reads on dword boundaries).
2576          * We'll tell device about this padding later.
2577          */
2578         len = priv->hw_setting.tx_cmd_len +
2579                         sizeof(struct iwl_cmd_header) + hdr_len;
2580
2581         len_org = len;
2582         len = (len + 3) & ~3;
2583
2584         if (len_org != len)
2585                 len_org = 1;
2586         else
2587                 len_org = 0;
2588
2589         /* Physical address of this Tx command's header (not MAC header!),
2590          * within command buffer array. */
2591         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2592                      offsetof(struct iwl3945_cmd, hdr);
2593
2594         /* Add buffer containing Tx command and MAC(!) header to TFD's
2595          * first entry */
2596         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2597
2598         if (info->control.hw_key)
2599                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2600
2601         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2602          * if any (802.11 null frames have no payload). */
2603         len = skb->len - hdr_len;
2604         if (len) {
2605                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2606                                            len, PCI_DMA_TODEVICE);
2607                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2608         }
2609
2610         if (!len)
2611                 /* If there is no payload, then we use only one Tx buffer */
2612                 *control_flags = TFD_CTL_COUNT_SET(1);
2613         else
2614                 /* Else use 2 buffers.
2615                  * Tell 3945 about any padding after MAC header */
2616                 *control_flags = TFD_CTL_COUNT_SET(2) |
2617                         TFD_CTL_PAD_SET(U32_PAD(len));
2618
2619         /* Total # bytes to be transmitted */
2620         len = (u16)skb->len;
2621         out_cmd->cmd.tx.len = cpu_to_le16(len);
2622
2623         /* TODO need this for burst mode later on */
2624         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
2625
2626         /* set is_hcca to 0; it probably will never be implemented */
2627         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2628
2629         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2630         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2631
2632         if (!ieee80211_has_morefrags(hdr->frame_control)) {
2633                 txq->need_update = 1;
2634                 if (qc)
2635                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2636         } else {
2637                 wait_write_ptr = 1;
2638                 txq->need_update = 0;
2639         }
2640
2641         iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
2642                            sizeof(out_cmd->cmd.tx));
2643
2644         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2645                            ieee80211_hdrlen(fc));
2646
2647         /* Tell device the write index *just past* this latest filled TFD */
2648         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2649         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2650         spin_unlock_irqrestore(&priv->lock, flags);
2651
2652         if (rc)
2653                 return rc;
2654
2655         if ((iwl3945_queue_space(q) < q->high_mark)
2656             && priv->mac80211_registered) {
2657                 if (wait_write_ptr) {
2658                         spin_lock_irqsave(&priv->lock, flags);
2659                         txq->need_update = 1;
2660                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2661                         spin_unlock_irqrestore(&priv->lock, flags);
2662                 }
2663
2664                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2665         }
2666
2667         return 0;
2668
2669 drop_unlock:
2670         spin_unlock_irqrestore(&priv->lock, flags);
2671 drop:
2672         return -1;
2673 }
2674
2675 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2676 {
2677         const struct ieee80211_supported_band *sband = NULL;
2678         struct ieee80211_rate *rate;
2679         int i;
2680
2681         sband = iwl3945_get_band(priv, priv->band);
2682         if (!sband) {
2683                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2684                 return;
2685         }
2686
2687         priv->active_rate = 0;
2688         priv->active_rate_basic = 0;
2689
2690         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2691                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2692
2693         for (i = 0; i < sband->n_bitrates; i++) {
2694                 rate = &sband->bitrates[i];
2695                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2696                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2697                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2698                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2699                         priv->active_rate |= (1 << rate->hw_value);
2700                 }
2701         }
2702
2703         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2704                        priv->active_rate, priv->active_rate_basic);
2705
2706         /*
2707          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2708          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2709          * OFDM
2710          */
2711         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2712                 priv->staging_rxon.cck_basic_rates =
2713                     ((priv->active_rate_basic &
2714                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2715         else
2716                 priv->staging_rxon.cck_basic_rates =
2717                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2718
2719         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2720                 priv->staging_rxon.ofdm_basic_rates =
2721                     ((priv->active_rate_basic &
2722                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2723                       IWL_FIRST_OFDM_RATE) & 0xFF;
2724         else
2725                 priv->staging_rxon.ofdm_basic_rates =
2726                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2727 }
2728
2729 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
2730 {
2731         unsigned long flags;
2732
2733         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2734                 return;
2735
2736         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2737                           disable_radio ? "OFF" : "ON");
2738
2739         if (disable_radio) {
2740                 iwl3945_scan_cancel(priv);
2741                 /* FIXME: This is a workaround for AP */
2742                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2743                         spin_lock_irqsave(&priv->lock, flags);
2744                         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
2745                                     CSR_UCODE_SW_BIT_RFKILL);
2746                         spin_unlock_irqrestore(&priv->lock, flags);
2747                         iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2748                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2749                 }
2750                 return;
2751         }
2752
2753         spin_lock_irqsave(&priv->lock, flags);
2754         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2755
2756         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2757         spin_unlock_irqrestore(&priv->lock, flags);
2758
2759         /* wake up ucode */
2760         msleep(10);
2761
2762         spin_lock_irqsave(&priv->lock, flags);
2763         iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
2764         if (!iwl3945_grab_nic_access(priv))
2765                 iwl3945_release_nic_access(priv);
2766         spin_unlock_irqrestore(&priv->lock, flags);
2767
2768         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2769                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2770                                   "disabled by HW switch\n");
2771                 return;
2772         }
2773
2774         if (priv->is_open)
2775                 queue_work(priv->workqueue, &priv->restart);
2776         return;
2777 }
2778
2779 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
2780                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2781 {
2782         u16 fc =
2783             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2784
2785         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2786                 return;
2787
2788         if (!(fc & IEEE80211_FCTL_PROTECTED))
2789                 return;
2790
2791         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2792         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2793         case RX_RES_STATUS_SEC_TYPE_TKIP:
2794                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2795                     RX_RES_STATUS_BAD_ICV_MIC)
2796                         stats->flag |= RX_FLAG_MMIC_ERROR;
2797         case RX_RES_STATUS_SEC_TYPE_WEP:
2798         case RX_RES_STATUS_SEC_TYPE_CCMP:
2799                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2800                     RX_RES_STATUS_DECRYPT_OK) {
2801                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2802                         stats->flag |= RX_FLAG_DECRYPTED;
2803                 }
2804                 break;
2805
2806         default:
2807                 break;
2808         }
2809 }
2810
2811 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2812
2813 #include "iwl-spectrum.h"
2814
2815 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2816 #define BEACON_TIME_MASK_HIGH   0xFF000000
2817 #define TIME_UNIT               1024
2818
2819 /*
2820  * extended beacon time format
2821  * time in usec will be changed into a 32-bit value in 8:24 format
2822  * the high 1 byte is the beacon counts
2823  * the lower 3 bytes is the time in usec within one beacon interval
2824  */
2825
2826 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2827 {
2828         u32 quot;
2829         u32 rem;
2830         u32 interval = beacon_interval * 1024;
2831
2832         if (!interval || !usec)
2833                 return 0;
2834
2835         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2836         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2837
2838         return (quot << 24) + rem;
2839 }
2840
2841 /* base is usually what we get from ucode with each received frame,
2842  * the same as HW timer counter counting down
2843  */
2844
2845 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2846 {
2847         u32 base_low = base & BEACON_TIME_MASK_LOW;
2848         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2849         u32 interval = beacon_interval * TIME_UNIT;
2850         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2851             (addon & BEACON_TIME_MASK_HIGH);
2852
2853         if (base_low > addon_low)
2854                 res += base_low - addon_low;
2855         else if (base_low < addon_low) {
2856                 res += interval + base_low - addon_low;
2857                 res += (1 << 24);
2858         } else
2859                 res += (1 << 24);
2860
2861         return cpu_to_le32(res);
2862 }
2863
2864 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
2865                                struct ieee80211_measurement_params *params,
2866                                u8 type)
2867 {
2868         struct iwl_spectrum_cmd spectrum;
2869         struct iwl_rx_packet *res;
2870         struct iwl3945_host_cmd cmd = {
2871                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2872                 .data = (void *)&spectrum,
2873                 .meta.flags = CMD_WANT_SKB,
2874         };
2875         u32 add_time = le64_to_cpu(params->start_time);
2876         int rc;
2877         int spectrum_resp_status;
2878         int duration = le16_to_cpu(params->duration);
2879
2880         if (iwl3945_is_associated(priv))
2881                 add_time =
2882                     iwl3945_usecs_to_beacons(
2883                         le64_to_cpu(params->start_time) - priv->last_tsf,
2884                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2885
2886         memset(&spectrum, 0, sizeof(spectrum));
2887
2888         spectrum.channel_count = cpu_to_le16(1);
2889         spectrum.flags =
2890             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2891         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2892         cmd.len = sizeof(spectrum);
2893         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2894
2895         if (iwl3945_is_associated(priv))
2896                 spectrum.start_time =
2897                     iwl3945_add_beacon_time(priv->last_beacon_time,
2898                                 add_time,
2899                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2900         else
2901                 spectrum.start_time = 0;
2902
2903         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2904         spectrum.channels[0].channel = params->channel;
2905         spectrum.channels[0].type = type;
2906         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2907                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2908                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2909
2910         rc = iwl3945_send_cmd_sync(priv, &cmd);
2911         if (rc)
2912                 return rc;
2913
2914         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2915         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2916                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2917                 rc = -EIO;
2918         }
2919
2920         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2921         switch (spectrum_resp_status) {
2922         case 0:         /* Command will be handled */
2923                 if (res->u.spectrum.id != 0xff) {
2924                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2925                                                 res->u.spectrum.id);
2926                         priv->measurement_status &= ~MEASUREMENT_READY;
2927                 }
2928                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2929                 rc = 0;
2930                 break;
2931
2932         case 1:         /* Command will not be handled */
2933                 rc = -EAGAIN;
2934                 break;
2935         }
2936
2937         dev_kfree_skb_any(cmd.meta.u.skb);
2938
2939         return rc;
2940 }
2941 #endif
2942
2943 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
2944                                struct iwl3945_rx_mem_buffer *rxb)
2945 {
2946         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2947         struct iwl_alive_resp *palive;
2948         struct delayed_work *pwork;
2949
2950         palive = &pkt->u.alive_frame;
2951
2952         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2953                        "0x%01X 0x%01X\n",
2954                        palive->is_valid, palive->ver_type,
2955                        palive->ver_subtype);
2956
2957         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2958                 IWL_DEBUG_INFO("Initialization Alive received.\n");
2959                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
2960                        sizeof(struct iwl_alive_resp));
2961                 pwork = &priv->init_alive_start;
2962         } else {
2963                 IWL_DEBUG_INFO("Runtime Alive received.\n");
2964                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2965                        sizeof(struct iwl_alive_resp));
2966                 pwork = &priv->alive_start;
2967                 iwl3945_disable_events(priv);
2968         }
2969
2970         /* We delay the ALIVE response by 5ms to
2971          * give the HW RF Kill time to activate... */
2972         if (palive->is_valid == UCODE_VALID_OK)
2973                 queue_delayed_work(priv->workqueue, pwork,
2974                                    msecs_to_jiffies(5));
2975         else
2976                 IWL_WARNING("uCode did not respond OK.\n");
2977 }
2978
2979 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
2980                                  struct iwl3945_rx_mem_buffer *rxb)
2981 {
2982         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2983
2984         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2985         return;
2986 }
2987
2988 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
2989                                struct iwl3945_rx_mem_buffer *rxb)
2990 {
2991         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2992
2993         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2994                 "seq 0x%04X ser 0x%08X\n",
2995                 le32_to_cpu(pkt->u.err_resp.error_type),
2996                 get_cmd_string(pkt->u.err_resp.cmd_id),
2997                 pkt->u.err_resp.cmd_id,
2998                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2999                 le32_to_cpu(pkt->u.err_resp.error_info));
3000 }
3001
3002 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3003
3004 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3005 {
3006         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3007         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3008         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
3009         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3010                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3011         rxon->channel = csa->channel;
3012         priv->staging_rxon.channel = csa->channel;
3013 }
3014
3015 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3016                                           struct iwl3945_rx_mem_buffer *rxb)
3017 {
3018 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3019         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3020         struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
3021
3022         if (!report->state) {
3023                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3024                           "Spectrum Measure Notification: Start\n");
3025                 return;
3026         }
3027
3028         memcpy(&priv->measure_report, report, sizeof(*report));
3029         priv->measurement_status |= MEASUREMENT_READY;
3030 #endif
3031 }
3032
3033 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3034                                   struct iwl3945_rx_mem_buffer *rxb)
3035 {
3036 #ifdef CONFIG_IWL3945_DEBUG
3037         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3038         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
3039         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3040                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3041 #endif
3042 }
3043
3044 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3045                                              struct iwl3945_rx_mem_buffer *rxb)
3046 {
3047         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3048         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3049                         "notification for %s:\n",
3050                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3051         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
3052                            le32_to_cpu(pkt->len));
3053 }
3054
3055 static void iwl3945_bg_beacon_update(struct work_struct *work)
3056 {
3057         struct iwl3945_priv *priv =
3058                 container_of(work, struct iwl3945_priv, beacon_update);
3059         struct sk_buff *beacon;
3060
3061         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3062         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
3063
3064         if (!beacon) {
3065                 IWL_ERROR("update beacon failed\n");
3066                 return;
3067         }
3068
3069         mutex_lock(&priv->mutex);
3070         /* new beacon skb is allocated every time; dispose previous.*/
3071         if (priv->ibss_beacon)
3072                 dev_kfree_skb(priv->ibss_beacon);
3073
3074         priv->ibss_beacon = beacon;
3075         mutex_unlock(&priv->mutex);
3076
3077         iwl3945_send_beacon_cmd(priv);
3078 }
3079
3080 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3081                                 struct iwl3945_rx_mem_buffer *rxb)
3082 {
3083 #ifdef CONFIG_IWL3945_DEBUG
3084         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3085         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3086         u8 rate = beacon->beacon_notify_hdr.rate;
3087
3088         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3089                 "tsf %d %d rate %d\n",
3090                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3091                 beacon->beacon_notify_hdr.failure_frame,
3092                 le32_to_cpu(beacon->ibss_mgr_status),
3093                 le32_to_cpu(beacon->high_tsf),
3094                 le32_to_cpu(beacon->low_tsf), rate);
3095 #endif
3096
3097         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
3098             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3099                 queue_work(priv->workqueue, &priv->beacon_update);
3100 }
3101
3102 /* Service response to REPLY_SCAN_CMD (0x80) */
3103 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3104                               struct iwl3945_rx_mem_buffer *rxb)
3105 {
3106 #ifdef CONFIG_IWL3945_DEBUG
3107         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3108         struct iwl_scanreq_notification *notif =
3109             (struct iwl_scanreq_notification *)pkt->u.raw;
3110
3111         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3112 #endif
3113 }
3114
3115 /* Service SCAN_START_NOTIFICATION (0x82) */
3116 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3117                                     struct iwl3945_rx_mem_buffer *rxb)
3118 {
3119         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3120         struct iwl_scanstart_notification *notif =
3121             (struct iwl_scanstart_notification *)pkt->u.raw;
3122         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3123         IWL_DEBUG_SCAN("Scan start: "
3124                        "%d [802.11%s] "
3125                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3126                        notif->channel,
3127                        notif->band ? "bg" : "a",
3128                        notif->tsf_high,
3129                        notif->tsf_low, notif->status, notif->beacon_timer);
3130 }
3131
3132 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3133 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3134                                       struct iwl3945_rx_mem_buffer *rxb)
3135 {
3136         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3137         struct iwl_scanresults_notification *notif =
3138             (struct iwl_scanresults_notification *)pkt->u.raw;
3139
3140         IWL_DEBUG_SCAN("Scan ch.res: "
3141                        "%d [802.11%s] "
3142                        "(TSF: 0x%08X:%08X) - %d "
3143                        "elapsed=%lu usec (%dms since last)\n",
3144                        notif->channel,
3145                        notif->band ? "bg" : "a",
3146                        le32_to_cpu(notif->tsf_high),
3147                        le32_to_cpu(notif->tsf_low),
3148                        le32_to_cpu(notif->statistics[0]),
3149                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3150                        jiffies_to_msecs(elapsed_jiffies
3151                                         (priv->last_scan_jiffies, jiffies)));
3152
3153         priv->last_scan_jiffies = jiffies;
3154         priv->next_scan_jiffies = 0;
3155 }
3156
3157 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3158 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3159                                        struct iwl3945_rx_mem_buffer *rxb)
3160 {
3161         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3162         struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3163
3164         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3165                        scan_notif->scanned_channels,
3166                        scan_notif->tsf_low,
3167                        scan_notif->tsf_high, scan_notif->status);
3168
3169         /* The HW is no longer scanning */
3170         clear_bit(STATUS_SCAN_HW, &priv->status);
3171
3172         /* The scan completion notification came in, so kill that timer... */
3173         cancel_delayed_work(&priv->scan_check);
3174
3175         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3176                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3177                                                         "2.4" : "5.2",
3178                        jiffies_to_msecs(elapsed_jiffies
3179                                         (priv->scan_pass_start, jiffies)));
3180
3181         /* Remove this scanned band from the list of pending
3182          * bands to scan, band G precedes A in order of scanning
3183          * as seen in iwl3945_bg_request_scan */
3184         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3185                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3186         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
3187                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
3188
3189         /* If a request to abort was given, or the scan did not succeed
3190          * then we reset the scan state machine and terminate,
3191          * re-queuing another scan if one has been requested */
3192         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3193                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3194                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3195         } else {
3196                 /* If there are more bands on this scan pass reschedule */
3197                 if (priv->scan_bands > 0)
3198                         goto reschedule;
3199         }
3200
3201         priv->last_scan_jiffies = jiffies;
3202         priv->next_scan_jiffies = 0;
3203         IWL_DEBUG_INFO("Setting scan to off\n");
3204
3205         clear_bit(STATUS_SCANNING, &priv->status);
3206
3207         IWL_DEBUG_INFO("Scan took %dms\n",
3208                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3209
3210         queue_work(priv->workqueue, &priv->scan_completed);
3211
3212         return;
3213
3214 reschedule:
3215         priv->scan_pass_start = jiffies;
3216         queue_work(priv->workqueue, &priv->request_scan);
3217 }
3218
3219 /* Handle notification from uCode that card's power state is changing
3220  * due to software, hardware, or critical temperature RFKILL */
3221 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3222                                     struct iwl3945_rx_mem_buffer *rxb)
3223 {
3224         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3225         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3226         unsigned long status = priv->status;
3227
3228         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3229                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3230                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3231
3232         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3233                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3234
3235         if (flags & HW_CARD_DISABLED)
3236                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3237         else
3238                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3239
3240
3241         if (flags & SW_CARD_DISABLED)
3242                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3243         else
3244                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3245
3246         iwl3945_scan_cancel(priv);
3247
3248         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3249              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3250             (test_bit(STATUS_RF_KILL_SW, &status) !=
3251              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3252                 queue_work(priv->workqueue, &priv->rf_kill);
3253         else
3254                 wake_up_interruptible(&priv->wait_command_queue);
3255 }
3256
3257 /**
3258  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3259  *
3260  * Setup the RX handlers for each of the reply types sent from the uCode
3261  * to the host.
3262  *
3263  * This function chains into the hardware specific files for them to setup
3264  * any hardware specific handlers as well.
3265  */
3266 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3267 {
3268         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3269         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3270         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3271         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3272         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3273             iwl3945_rx_spectrum_measure_notif;
3274         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3275         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3276             iwl3945_rx_pm_debug_statistics_notif;
3277         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3278
3279         /*
3280          * The same handler is used for both the REPLY to a discrete
3281          * statistics request from the host as well as for the periodic
3282          * statistics notifications (after received beacons) from the uCode.
3283          */
3284         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3285         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3286
3287         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3288         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3289         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3290             iwl3945_rx_scan_results_notif;
3291         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3292             iwl3945_rx_scan_complete_notif;
3293         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3294
3295         /* Set up hardware specific Rx handlers */
3296         iwl3945_hw_rx_handler_setup(priv);
3297 }
3298
3299 /**
3300  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3301  * When FW advances 'R' index, all entries between old and new 'R' index
3302  * need to be reclaimed.
3303  */
3304 static void iwl3945_cmd_queue_reclaim(struct iwl3945_priv *priv,
3305                                       int txq_id, int index)
3306 {
3307         struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3308         struct iwl3945_queue *q = &txq->q;
3309         int nfreed = 0;
3310
3311         if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3312                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3313                           "is out of range [0-%d] %d %d.\n", txq_id,
3314                           index, q->n_bd, q->write_ptr, q->read_ptr);
3315                 return;
3316         }
3317
3318         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3319                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3320                 if (nfreed > 1) {
3321                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3322                                         q->write_ptr, q->read_ptr);
3323                         queue_work(priv->workqueue, &priv->restart);
3324                         break;
3325                 }
3326                 nfreed++;
3327         }
3328 }
3329
3330
3331 /**
3332  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3333  * @rxb: Rx buffer to reclaim
3334  *
3335  * If an Rx buffer has an async callback associated with it the callback
3336  * will be executed.  The attached skb (if present) will only be freed
3337  * if the callback returns 1
3338  */
3339 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3340                                 struct iwl3945_rx_mem_buffer *rxb)
3341 {
3342         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3343         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3344         int txq_id = SEQ_TO_QUEUE(sequence);
3345         int index = SEQ_TO_INDEX(sequence);
3346         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
3347         int cmd_index;
3348         struct iwl3945_cmd *cmd;
3349
3350         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3351
3352         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3353         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3354
3355         /* Input error checking is done when commands are added to queue. */
3356         if (cmd->meta.flags & CMD_WANT_SKB) {
3357                 cmd->meta.source->u.skb = rxb->skb;
3358                 rxb->skb = NULL;
3359         } else if (cmd->meta.u.callback &&
3360                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3361                 rxb->skb = NULL;
3362
3363         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
3364
3365         if (!(cmd->meta.flags & CMD_ASYNC)) {
3366                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3367                 wake_up_interruptible(&priv->wait_command_queue);
3368         }
3369 }
3370
3371 /************************** RX-FUNCTIONS ****************************/
3372 /*
3373  * Rx theory of operation
3374  *
3375  * The host allocates 32 DMA target addresses and passes the host address
3376  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3377  * 0 to 31
3378  *
3379  * Rx Queue Indexes
3380  * The host/firmware share two index registers for managing the Rx buffers.
3381  *
3382  * The READ index maps to the first position that the firmware may be writing
3383  * to -- the driver can read up to (but not including) this position and get
3384  * good data.
3385  * The READ index is managed by the firmware once the card is enabled.
3386  *
3387  * The WRITE index maps to the last position the driver has read from -- the
3388  * position preceding WRITE is the last slot the firmware can place a packet.
3389  *
3390  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3391  * WRITE = READ.
3392  *
3393  * During initialization, the host sets up the READ queue position to the first
3394  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3395  *
3396  * When the firmware places a packet in a buffer, it will advance the READ index
3397  * and fire the RX interrupt.  The driver can then query the READ index and
3398  * process as many packets as possible, moving the WRITE index forward as it
3399  * resets the Rx queue buffers with new memory.
3400  *
3401  * The management in the driver is as follows:
3402  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3403  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3404  *   to replenish the iwl->rxq->rx_free.
3405  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3406  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3407  *   'processed' and 'read' driver indexes as well)
3408  * + A received packet is processed and handed to the kernel network stack,
3409  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3410  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3411  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3412  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3413  *   were enough free buffers and RX_STALLED is set it is cleared.
3414  *
3415  *
3416  * Driver sequence:
3417  *
3418  * iwl3945_rx_queue_alloc()   Allocates rx_free
3419  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3420  *                            iwl3945_rx_queue_restock
3421  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3422  *                            queue, updates firmware pointers, and updates
3423  *                            the WRITE index.  If insufficient rx_free buffers
3424  *                            are available, schedules iwl3945_rx_replenish
3425  *
3426  * -- enable interrupts --
3427  * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
3428  *                            READ INDEX, detaching the SKB from the pool.
3429  *                            Moves the packet buffer from queue to rx_used.
3430  *                            Calls iwl3945_rx_queue_restock to refill any empty
3431  *                            slots.
3432  * ...
3433  *
3434  */
3435
3436 /**
3437  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3438  */
3439 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3440 {
3441         int s = q->read - q->write;
3442         if (s <= 0)
3443                 s += RX_QUEUE_SIZE;
3444         /* keep some buffer to not confuse full and empty queue */
3445         s -= 2;
3446         if (s < 0)
3447                 s = 0;
3448         return s;
3449 }
3450
3451 /**
3452  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3453  */
3454 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
3455 {
3456         u32 reg = 0;
3457         int rc = 0;
3458         unsigned long flags;
3459
3460         spin_lock_irqsave(&q->lock, flags);
3461
3462         if (q->need_update == 0)
3463                 goto exit_unlock;
3464
3465         /* If power-saving is in use, make sure device is awake */
3466         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3467                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3468
3469                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3470                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
3471                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3472                         goto exit_unlock;
3473                 }
3474
3475                 rc = iwl3945_grab_nic_access(priv);
3476                 if (rc)
3477                         goto exit_unlock;
3478
3479                 /* Device expects a multiple of 8 */
3480                 iwl3945_write_direct32(priv, FH39_RSCSR_CHNL0_WPTR,
3481                                      q->write & ~0x7);
3482                 iwl3945_release_nic_access(priv);
3483
3484         /* Else device is assumed to be awake */
3485         } else
3486                 /* Device expects a multiple of 8 */
3487                 iwl3945_write32(priv, FH39_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3488
3489
3490         q->need_update = 0;
3491
3492  exit_unlock:
3493         spin_unlock_irqrestore(&q->lock, flags);
3494         return rc;
3495 }
3496
3497 /**
3498  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3499  */
3500 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
3501                                           dma_addr_t dma_addr)
3502 {
3503         return cpu_to_le32((u32)dma_addr);
3504 }
3505
3506 /**
3507  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3508  *
3509  * If there are slots in the RX queue that need to be restocked,
3510  * and we have free pre-allocated buffers, fill the ranks as much
3511  * as we can, pulling from rx_free.
3512  *
3513  * This moves the 'write' index forward to catch up with 'processed', and
3514  * also updates the memory address in the firmware to reference the new
3515  * target buffer.
3516  */
3517 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
3518 {
3519         struct iwl3945_rx_queue *rxq = &priv->rxq;
3520         struct list_head *element;
3521         struct iwl3945_rx_mem_buffer *rxb;
3522         unsigned long flags;
3523         int write, rc;
3524
3525         spin_lock_irqsave(&rxq->lock, flags);
3526         write = rxq->write & ~0x7;
3527         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3528                 /* Get next free Rx buffer, remove from free list */
3529                 element = rxq->rx_free.next;
3530                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3531                 list_del(element);
3532
3533                 /* Point to Rx buffer via next RBD in circular buffer */
3534                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3535                 rxq->queue[rxq->write] = rxb;
3536                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3537                 rxq->free_count--;
3538         }
3539         spin_unlock_irqrestore(&rxq->lock, flags);
3540         /* If the pre-allocated buffer pool is dropping low, schedule to
3541          * refill it */
3542         if (rxq->free_count <= RX_LOW_WATERMARK)
3543                 queue_work(priv->workqueue, &priv->rx_replenish);
3544
3545
3546         /* If we've added more space for the firmware to place data, tell it.
3547          * Increment device's write pointer in multiples of 8. */
3548         if ((write != (rxq->write & ~0x7))
3549             || (abs(rxq->write - rxq->read) > 7)) {
3550                 spin_lock_irqsave(&rxq->lock, flags);
3551                 rxq->need_update = 1;
3552                 spin_unlock_irqrestore(&rxq->lock, flags);
3553                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3554                 if (rc)
3555                         return rc;
3556         }
3557
3558         return 0;
3559 }
3560
3561 /**
3562  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3563  *
3564  * When moving to rx_free an SKB is allocated for the slot.
3565  *
3566  * Also restock the Rx queue via iwl3945_rx_queue_restock.
3567  * This is called as a scheduled work item (except for during initialization)
3568  */
3569 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
3570 {
3571         struct iwl3945_rx_queue *rxq = &priv->rxq;
3572         struct list_head *element;
3573         struct iwl3945_rx_mem_buffer *rxb;
3574         unsigned long flags;
3575         spin_lock_irqsave(&rxq->lock, flags);
3576         while (!list_empty(&rxq->rx_used)) {
3577                 element = rxq->rx_used.next;
3578                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3579
3580                 /* Alloc a new receive buffer */
3581                 rxb->skb =
3582                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3583                 if (!rxb->skb) {
3584                         if (net_ratelimit())
3585                                 printk(KERN_CRIT DRV_NAME
3586                                        ": Can not allocate SKB buffers\n");
3587                         /* We don't reschedule replenish work here -- we will
3588                          * call the restock method and if it still needs
3589                          * more buffers it will schedule replenish */
3590                         break;
3591                 }
3592
3593                 /* If radiotap head is required, reserve some headroom here.
3594                  * The physical head count is a variable rx_stats->phy_count.
3595                  * We reserve 4 bytes here. Plus these extra bytes, the
3596                  * headroom of the physical head should be enough for the
3597                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3598                  */
3599                 skb_reserve(rxb->skb, 4);
3600
3601                 priv->alloc_rxb_skb++;
3602                 list_del(element);
3603
3604                 /* Get physical address of RB/SKB */
3605                 rxb->dma_addr =
3606                     pci_map_single(priv->pci_dev, rxb->skb->data,
3607                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3608                 list_add_tail(&rxb->list, &rxq->rx_free);
3609                 rxq->free_count++;
3610         }
3611         spin_unlock_irqrestore(&rxq->lock, flags);
3612 }
3613
3614 /*
3615  * this should be called while priv->lock is locked
3616  */
3617 static void __iwl3945_rx_replenish(void *data)
3618 {
3619         struct iwl3945_priv *priv = data;
3620
3621         iwl3945_rx_allocate(priv);
3622         iwl3945_rx_queue_restock(priv);
3623 }
3624
3625
3626 void iwl3945_rx_replenish(void *data)
3627 {
3628         struct iwl3945_priv *priv = data;
3629         unsigned long flags;
3630
3631         iwl3945_rx_allocate(priv);
3632
3633         spin_lock_irqsave(&priv->lock, flags);
3634         iwl3945_rx_queue_restock(priv);
3635         spin_unlock_irqrestore(&priv->lock, flags);
3636 }
3637
3638 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3639  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3640  * This free routine walks the list of POOL entries and if SKB is set to
3641  * non NULL it is unmapped and freed
3642  */
3643 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3644 {
3645         int i;
3646         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3647                 if (rxq->pool[i].skb != NULL) {
3648                         pci_unmap_single(priv->pci_dev,
3649                                          rxq->pool[i].dma_addr,
3650                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3651                         dev_kfree_skb(rxq->pool[i].skb);
3652                 }
3653         }
3654
3655         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3656                             rxq->dma_addr);
3657         rxq->bd = NULL;
3658 }
3659
3660 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
3661 {
3662         struct iwl3945_rx_queue *rxq = &priv->rxq;
3663         struct pci_dev *dev = priv->pci_dev;
3664         int i;
3665
3666         spin_lock_init(&rxq->lock);
3667         INIT_LIST_HEAD(&rxq->rx_free);
3668         INIT_LIST_HEAD(&rxq->rx_used);
3669
3670         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3671         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3672         if (!rxq->bd)
3673                 return -ENOMEM;
3674
3675         /* Fill the rx_used queue with _all_ of the Rx buffers */
3676         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3677                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3678
3679         /* Set us so that we have processed and used all buffers, but have
3680          * not restocked the Rx queue with fresh buffers */
3681         rxq->read = rxq->write = 0;
3682         rxq->free_count = 0;
3683         rxq->need_update = 0;
3684         return 0;
3685 }
3686
3687 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3688 {
3689         unsigned long flags;
3690         int i;
3691         spin_lock_irqsave(&rxq->lock, flags);
3692         INIT_LIST_HEAD(&rxq->rx_free);
3693         INIT_LIST_HEAD(&rxq->rx_used);
3694         /* Fill the rx_used queue with _all_ of the Rx buffers */
3695         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3696                 /* In the reset function, these buffers may have been allocated
3697                  * to an SKB, so we need to unmap and free potential storage */
3698                 if (rxq->pool[i].skb != NULL) {
3699                         pci_unmap_single(priv->pci_dev,
3700                                          rxq->pool[i].dma_addr,
3701                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3702                         priv->alloc_rxb_skb--;
3703                         dev_kfree_skb(rxq->pool[i].skb);
3704                         rxq->pool[i].skb = NULL;
3705                 }
3706                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3707         }
3708
3709         /* Set us so that we have processed and used all buffers, but have
3710          * not restocked the Rx queue with fresh buffers */
3711         rxq->read = rxq->write = 0;
3712         rxq->free_count = 0;
3713         spin_unlock_irqrestore(&rxq->lock, flags);
3714 }
3715
3716 /* Convert linear signal-to-noise ratio into dB */
3717 static u8 ratio2dB[100] = {
3718 /*       0   1   2   3   4   5   6   7   8   9 */
3719          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3720         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3721         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3722         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3723         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3724         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3725         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3726         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3727         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3728         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3729 };
3730
3731 /* Calculates a relative dB value from a ratio of linear
3732  *   (i.e. not dB) signal levels.
3733  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3734 int iwl3945_calc_db_from_ratio(int sig_ratio)
3735 {
3736         /* 1000:1 or higher just report as 60 dB */
3737         if (sig_ratio >= 1000)
3738                 return 60;
3739
3740         /* 100:1 or higher, divide by 10 and use table,
3741          *   add 20 dB to make up for divide by 10 */
3742         if (sig_ratio >= 100)
3743                 return 20 + (int)ratio2dB[sig_ratio/10];
3744
3745         /* We shouldn't see this */
3746         if (sig_ratio < 1)
3747                 return 0;
3748
3749         /* Use table for ratios 1:1 - 99:1 */
3750         return (int)ratio2dB[sig_ratio];
3751 }
3752
3753 #define PERFECT_RSSI (-20) /* dBm */
3754 #define WORST_RSSI (-95)   /* dBm */
3755 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3756
3757 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3758  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3759  *   about formulas used below. */
3760 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3761 {
3762         int sig_qual;
3763         int degradation = PERFECT_RSSI - rssi_dbm;
3764
3765         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3766          * as indicator; formula is (signal dbm - noise dbm).
3767          * SNR at or above 40 is a great signal (100%).
3768          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3769          * Weakest usable signal is usually 10 - 15 dB SNR. */
3770         if (noise_dbm) {
3771                 if (rssi_dbm - noise_dbm >= 40)
3772                         return 100;
3773                 else if (rssi_dbm < noise_dbm)
3774                         return 0;
3775                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3776
3777         /* Else use just the signal level.
3778          * This formula is a least squares fit of data points collected and
3779          *   compared with a reference system that had a percentage (%) display
3780          *   for signal quality. */
3781         } else
3782                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3783                             (15 * RSSI_RANGE + 62 * degradation)) /
3784                            (RSSI_RANGE * RSSI_RANGE);
3785
3786         if (sig_qual > 100)
3787                 sig_qual = 100;
3788         else if (sig_qual < 1)
3789                 sig_qual = 0;
3790
3791         return sig_qual;
3792 }
3793
3794 /**
3795  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3796  *
3797  * Uses the priv->rx_handlers callback function array to invoke
3798  * the appropriate handlers, including command responses,
3799  * frame-received notifications, and other notifications.
3800  */
3801 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
3802 {
3803         struct iwl3945_rx_mem_buffer *rxb;
3804         struct iwl_rx_packet *pkt;
3805         struct iwl3945_rx_queue *rxq = &priv->rxq;
3806         u32 r, i;
3807         int reclaim;
3808         unsigned long flags;
3809         u8 fill_rx = 0;
3810         u32 count = 8;
3811
3812         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3813          * buffer that the driver may process (last buffer filled by ucode). */
3814         r = iwl3945_hw_get_rx_read(priv);
3815         i = rxq->read;
3816
3817         if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3818                 fill_rx = 1;
3819         /* Rx interrupt, but nothing sent from uCode */
3820         if (i == r)
3821                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3822
3823         while (i != r) {
3824                 rxb = rxq->queue[i];
3825
3826                 /* If an RXB doesn't have a Rx queue slot associated with it,
3827                  * then a bug has been introduced in the queue refilling
3828                  * routines -- catch it here */
3829                 BUG_ON(rxb == NULL);
3830
3831                 rxq->queue[i] = NULL;
3832
3833                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3834                                             IWL_RX_BUF_SIZE,
3835                                             PCI_DMA_FROMDEVICE);
3836                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3837
3838                 /* Reclaim a command buffer only if this packet is a response
3839                  *   to a (driver-originated) command.
3840                  * If the packet (e.g. Rx frame) originated from uCode,
3841                  *   there is no command buffer to reclaim.
3842                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3843                  *   but apparently a few don't get set; catch them here. */
3844                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3845                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3846                         (pkt->hdr.cmd != REPLY_TX);
3847
3848                 /* Based on type of command response or notification,
3849                  *   handle those that need handling via function in
3850                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
3851                 if (priv->rx_handlers[pkt->hdr.cmd]) {
3852                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3853                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3854                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3855                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3856                 } else {
3857                         /* No handling needed */
3858                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3859                                 "r %d i %d No handler needed for %s, 0x%02x\n",
3860                                 r, i, get_cmd_string(pkt->hdr.cmd),
3861                                 pkt->hdr.cmd);
3862                 }
3863
3864                 if (reclaim) {
3865                         /* Invoke any callbacks, transfer the skb to caller, and
3866                          * fire off the (possibly) blocking iwl3945_send_cmd()
3867                          * as we reclaim the driver command queue */
3868                         if (rxb && rxb->skb)
3869                                 iwl3945_tx_cmd_complete(priv, rxb);
3870                         else
3871                                 IWL_WARNING("Claim null rxb?\n");
3872                 }
3873
3874                 /* For now we just don't re-use anything.  We can tweak this
3875                  * later to try and re-use notification packets and SKBs that
3876                  * fail to Rx correctly */
3877                 if (rxb->skb != NULL) {
3878                         priv->alloc_rxb_skb--;
3879                         dev_kfree_skb_any(rxb->skb);
3880                         rxb->skb = NULL;
3881                 }
3882
3883                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3884                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3885                 spin_lock_irqsave(&rxq->lock, flags);
3886                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3887                 spin_unlock_irqrestore(&rxq->lock, flags);
3888                 i = (i + 1) & RX_QUEUE_MASK;
3889                 /* If there are a lot of unused frames,
3890                  * restock the Rx queue so ucode won't assert. */
3891                 if (fill_rx) {
3892                         count++;
3893                         if (count >= 8) {
3894                                 priv->rxq.read = i;
3895                                 __iwl3945_rx_replenish(priv);
3896                                 count = 0;
3897                         }
3898                 }
3899         }
3900
3901         /* Backtrack one entry */
3902         priv->rxq.read = i;
3903         iwl3945_rx_queue_restock(priv);
3904 }
3905
3906 /**
3907  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
3908  */
3909 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
3910                                   struct iwl3945_tx_queue *txq)
3911 {
3912         u32 reg = 0;
3913         int rc = 0;
3914         int txq_id = txq->q.id;
3915
3916         if (txq->need_update == 0)
3917                 return rc;
3918
3919         /* if we're trying to save power */
3920         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3921                 /* wake up nic if it's powered down ...
3922                  * uCode will wake up, and interrupt us again, so next
3923                  * time we'll skip this part. */
3924                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3925
3926                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3927                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3928                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
3929                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3930                         return rc;
3931                 }
3932
3933                 /* restore this queue's parameters in nic hardware. */
3934                 rc = iwl3945_grab_nic_access(priv);
3935                 if (rc)
3936                         return rc;
3937                 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
3938                                      txq->q.write_ptr | (txq_id << 8));
3939                 iwl3945_release_nic_access(priv);
3940
3941         /* else not in power-save mode, uCode will never sleep when we're
3942          * trying to tx (during RFKILL, we're not trying to tx). */
3943         } else
3944                 iwl3945_write32(priv, HBUS_TARG_WRPTR,
3945                             txq->q.write_ptr | (txq_id << 8));
3946
3947         txq->need_update = 0;
3948
3949         return rc;
3950 }
3951
3952 #ifdef CONFIG_IWL3945_DEBUG
3953 static void iwl3945_print_rx_config_cmd(struct iwl3945_priv *priv,
3954                                         struct iwl3945_rxon_cmd *rxon)
3955 {
3956         IWL_DEBUG_RADIO("RX CONFIG:\n");
3957         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3958         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3959         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3960         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3961                         le32_to_cpu(rxon->filter_flags));
3962         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3963         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3964                         rxon->ofdm_basic_rates);
3965         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3966         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3967         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
3968         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3969 }
3970 #endif
3971
3972 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
3973 {
3974         IWL_DEBUG_ISR("Enabling interrupts\n");
3975         set_bit(STATUS_INT_ENABLED, &priv->status);
3976         iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3977 }
3978
3979
3980 /* call this function to flush any scheduled tasklet */
3981 static inline void iwl_synchronize_irq(struct iwl3945_priv *priv)
3982 {
3983         /* wait to make sure we flush pending tasklet*/
3984         synchronize_irq(priv->pci_dev->irq);
3985         tasklet_kill(&priv->irq_tasklet);
3986 }
3987
3988
3989 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
3990 {
3991         clear_bit(STATUS_INT_ENABLED, &priv->status);
3992
3993         /* disable interrupts from uCode/NIC to host */
3994         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
3995
3996         /* acknowledge/clear/reset any interrupts still pending
3997          * from uCode or flow handler (Rx/Tx DMA) */
3998         iwl3945_write32(priv, CSR_INT, 0xffffffff);
3999         iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4000         IWL_DEBUG_ISR("Disabled interrupts\n");
4001 }
4002
4003 static const char *desc_lookup(int i)
4004 {
4005         switch (i) {
4006         case 1:
4007                 return "FAIL";
4008         case 2:
4009                 return "BAD_PARAM";
4010         case 3:
4011                 return "BAD_CHECKSUM";
4012         case 4:
4013                 return "NMI_INTERRUPT";
4014         case 5:
4015                 return "SYSASSERT";
4016         case 6:
4017                 return "FATAL_ERROR";
4018         }
4019
4020         return "UNKNOWN";
4021 }
4022
4023 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4024 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4025
4026 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4027 {
4028         u32 i;
4029         u32 desc, time, count, base, data1;
4030         u32 blink1, blink2, ilink1, ilink2;
4031         int rc;
4032
4033         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4034
4035         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4036                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4037                 return;
4038         }
4039
4040         rc = iwl3945_grab_nic_access(priv);
4041         if (rc) {
4042                 IWL_WARNING("Can not read from adapter at this time.\n");
4043                 return;
4044         }
4045
4046         count = iwl3945_read_targ_mem(priv, base);
4047
4048         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4049                 IWL_ERROR("Start IWL Error Log Dump:\n");
4050                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4051         }
4052
4053         IWL_ERROR("Desc       Time       asrtPC  blink2 "
4054                   "ilink1  nmiPC   Line\n");
4055         for (i = ERROR_START_OFFSET;
4056              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4057              i += ERROR_ELEM_SIZE) {
4058                 desc = iwl3945_read_targ_mem(priv, base + i);
4059                 time =
4060                     iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4061                 blink1 =
4062                     iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4063                 blink2 =
4064                     iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4065                 ilink1 =
4066                     iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4067                 ilink2 =
4068                     iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4069                 data1 =
4070                     iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4071
4072                 IWL_ERROR
4073                     ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4074                      desc_lookup(desc), desc, time, blink1, blink2,
4075                      ilink1, ilink2, data1);
4076         }
4077
4078         iwl3945_release_nic_access(priv);
4079
4080 }
4081
4082 #define EVENT_START_OFFSET  (6 * sizeof(u32))
4083
4084 /**
4085  * iwl3945_print_event_log - Dump error event log to syslog
4086  *
4087  * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4088  */
4089 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4090                                 u32 num_events, u32 mode)
4091 {
4092         u32 i;
4093         u32 base;       /* SRAM byte address of event log header */
4094         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4095         u32 ptr;        /* SRAM byte address of log data */
4096         u32 ev, time, data; /* event log data */
4097
4098         if (num_events == 0)
4099                 return;
4100
4101         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4102
4103         if (mode == 0)
4104                 event_size = 2 * sizeof(u32);
4105         else
4106                 event_size = 3 * sizeof(u32);
4107
4108         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4109
4110         /* "time" is actually "data" for mode 0 (no timestamp).
4111          * place event id # at far right for easier visual parsing. */
4112         for (i = 0; i < num_events; i++) {
4113                 ev = iwl3945_read_targ_mem(priv, ptr);
4114                 ptr += sizeof(u32);
4115                 time = iwl3945_read_targ_mem(priv, ptr);
4116                 ptr += sizeof(u32);
4117                 if (mode == 0)
4118                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4119                 else {
4120                         data = iwl3945_read_targ_mem(priv, ptr);
4121                         ptr += sizeof(u32);
4122                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4123                 }
4124         }
4125 }
4126
4127 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4128 {
4129         int rc;
4130         u32 base;       /* SRAM byte address of event log header */
4131         u32 capacity;   /* event log capacity in # entries */
4132         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4133         u32 num_wraps;  /* # times uCode wrapped to top of log */
4134         u32 next_entry; /* index of next entry to be written by uCode */
4135         u32 size;       /* # entries that we'll print */
4136
4137         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4138         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4139                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4140                 return;
4141         }
4142
4143         rc = iwl3945_grab_nic_access(priv);
4144         if (rc) {
4145                 IWL_WARNING("Can not read from adapter at this time.\n");
4146                 return;
4147         }
4148
4149         /* event log header */
4150         capacity = iwl3945_read_targ_mem(priv, base);
4151         mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4152         num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4153         next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4154
4155         size = num_wraps ? capacity : next_entry;
4156
4157         /* bail out if nothing in log */
4158         if (size == 0) {
4159                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4160                 iwl3945_release_nic_access(priv);
4161                 return;
4162         }
4163
4164         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4165                   size, num_wraps);
4166
4167         /* if uCode has wrapped back to top of log, start at the oldest entry,
4168          * i.e the next one that uCode would fill. */
4169         if (num_wraps)
4170                 iwl3945_print_event_log(priv, next_entry,
4171                                     capacity - next_entry, mode);
4172
4173         /* (then/else) start at top of log */
4174         iwl3945_print_event_log(priv, 0, next_entry, mode);
4175
4176         iwl3945_release_nic_access(priv);
4177 }
4178
4179 /**
4180  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4181  */
4182 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4183 {
4184         /* Set the FW error flag -- cleared on iwl3945_down */
4185         set_bit(STATUS_FW_ERROR, &priv->status);
4186
4187         /* Cancel currently queued command. */
4188         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4189
4190 #ifdef CONFIG_IWL3945_DEBUG
4191         if (priv->debug_level & IWL_DL_FW_ERRORS) {
4192                 iwl3945_dump_nic_error_log(priv);
4193                 iwl3945_dump_nic_event_log(priv);
4194                 iwl3945_print_rx_config_cmd(priv, &priv->staging_rxon);
4195         }
4196 #endif
4197
4198         wake_up_interruptible(&priv->wait_command_queue);
4199
4200         /* Keep the restart process from trying to send host
4201          * commands by clearing the INIT status bit */
4202         clear_bit(STATUS_READY, &priv->status);
4203
4204         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4205                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4206                           "Restarting adapter due to uCode error.\n");
4207
4208                 if (iwl3945_is_associated(priv)) {
4209                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4210                                sizeof(priv->recovery_rxon));
4211                         priv->error_recovering = 1;
4212                 }
4213                 queue_work(priv->workqueue, &priv->restart);
4214         }
4215 }
4216
4217 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4218 {
4219         unsigned long flags;
4220
4221         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4222                sizeof(priv->staging_rxon));
4223         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4224         iwl3945_commit_rxon(priv);
4225
4226         iwl3945_add_station(priv, priv->bssid, 1, 0);
4227
4228         spin_lock_irqsave(&priv->lock, flags);
4229         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4230         priv->error_recovering = 0;
4231         spin_unlock_irqrestore(&priv->lock, flags);
4232 }
4233
4234 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4235 {
4236         u32 inta, handled = 0;
4237         u32 inta_fh;
4238         unsigned long flags;
4239 #ifdef CONFIG_IWL3945_DEBUG
4240         u32 inta_mask;
4241 #endif
4242
4243         spin_lock_irqsave(&priv->lock, flags);
4244
4245         /* Ack/clear/reset pending uCode interrupts.
4246          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4247          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4248         inta = iwl3945_read32(priv, CSR_INT);
4249         iwl3945_write32(priv, CSR_INT, inta);
4250
4251         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4252          * Any new interrupts that happen after this, either while we're
4253          * in this tasklet, or later, will show up in next ISR/tasklet. */
4254         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4255         iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4256
4257 #ifdef CONFIG_IWL3945_DEBUG
4258         if (priv->debug_level & IWL_DL_ISR) {
4259                 /* just for debug */
4260                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4261                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4262                               inta, inta_mask, inta_fh);
4263         }
4264 #endif
4265
4266         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4267          * atomic, make sure that inta covers all the interrupts that
4268          * we've discovered, even if FH interrupt came in just after
4269          * reading CSR_INT. */
4270         if (inta_fh & CSR39_FH_INT_RX_MASK)
4271                 inta |= CSR_INT_BIT_FH_RX;
4272         if (inta_fh & CSR39_FH_INT_TX_MASK)
4273                 inta |= CSR_INT_BIT_FH_TX;
4274
4275         /* Now service all interrupt bits discovered above. */
4276         if (inta & CSR_INT_BIT_HW_ERR) {
4277                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4278
4279                 /* Tell the device to stop sending interrupts */
4280                 iwl3945_disable_interrupts(priv);
4281
4282                 iwl3945_irq_handle_error(priv);
4283
4284                 handled |= CSR_INT_BIT_HW_ERR;
4285
4286                 spin_unlock_irqrestore(&priv->lock, flags);
4287
4288                 return;
4289         }
4290
4291 #ifdef CONFIG_IWL3945_DEBUG
4292         if (priv->debug_level & (IWL_DL_ISR)) {
4293                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4294                 if (inta & CSR_INT_BIT_SCD)
4295                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4296                                       "the frame/frames.\n");
4297
4298                 /* Alive notification via Rx interrupt will do the real work */
4299                 if (inta & CSR_INT_BIT_ALIVE)
4300                         IWL_DEBUG_ISR("Alive interrupt\n");
4301         }
4302 #endif
4303         /* Safely ignore these bits for debug checks below */
4304         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4305
4306         /* Error detected by uCode */
4307         if (inta & CSR_INT_BIT_SW_ERR) {
4308                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4309                           inta);
4310                 iwl3945_irq_handle_error(priv);
4311                 handled |= CSR_INT_BIT_SW_ERR;
4312         }
4313
4314         /* uCode wakes up after power-down sleep */
4315         if (inta & CSR_INT_BIT_WAKEUP) {
4316                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4317                 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4318                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4319                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4320                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4321                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4322                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4323                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4324
4325                 handled |= CSR_INT_BIT_WAKEUP;
4326         }
4327
4328         /* All uCode command responses, including Tx command responses,
4329          * Rx "responses" (frame-received notification), and other
4330          * notifications from uCode come through here*/
4331         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4332                 iwl3945_rx_handle(priv);
4333                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4334         }
4335
4336         if (inta & CSR_INT_BIT_FH_TX) {
4337                 IWL_DEBUG_ISR("Tx interrupt\n");
4338
4339                 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4340                 if (!iwl3945_grab_nic_access(priv)) {
4341                         iwl3945_write_direct32(priv, FH39_TCSR_CREDIT
4342                                              (FH39_SRVC_CHNL), 0x0);
4343                         iwl3945_release_nic_access(priv);
4344                 }
4345                 handled |= CSR_INT_BIT_FH_TX;
4346         }
4347
4348         if (inta & ~handled)
4349                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4350
4351         if (inta & ~CSR_INI_SET_MASK) {
4352                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4353                          inta & ~CSR_INI_SET_MASK);
4354                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4355         }
4356
4357         /* Re-enable all interrupts */
4358         /* only Re-enable if disabled by irq */
4359         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4360                 iwl3945_enable_interrupts(priv);
4361
4362 #ifdef CONFIG_IWL3945_DEBUG
4363         if (priv->debug_level & (IWL_DL_ISR)) {
4364                 inta = iwl3945_read32(priv, CSR_INT);
4365                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4366                 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4367                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4368                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4369         }
4370 #endif
4371         spin_unlock_irqrestore(&priv->lock, flags);
4372 }
4373
4374 static irqreturn_t iwl3945_isr(int irq, void *data)
4375 {
4376         struct iwl3945_priv *priv = data;
4377         u32 inta, inta_mask;
4378         u32 inta_fh;
4379         if (!priv)
4380                 return IRQ_NONE;
4381
4382         spin_lock(&priv->lock);
4383
4384         /* Disable (but don't clear!) interrupts here to avoid
4385          *    back-to-back ISRs and sporadic interrupts from our NIC.
4386          * If we have something to service, the tasklet will re-enable ints.
4387          * If we *don't* have something, we'll re-enable before leaving here. */
4388         inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
4389         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4390
4391         /* Discover which interrupts are active/pending */
4392         inta = iwl3945_read32(priv, CSR_INT);
4393         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4394
4395         /* Ignore interrupt if there's nothing in NIC to service.
4396          * This may be due to IRQ shared with another device,
4397          * or due to sporadic interrupts thrown from our NIC. */
4398         if (!inta && !inta_fh) {
4399                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4400                 goto none;
4401         }
4402
4403         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4404                 /* Hardware disappeared */
4405                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
4406                 goto unplugged;
4407         }
4408
4409         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4410                       inta, inta_mask, inta_fh);
4411
4412         inta &= ~CSR_INT_BIT_SCD;
4413
4414         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4415         if (likely(inta || inta_fh))
4416                 tasklet_schedule(&priv->irq_tasklet);
4417 unplugged:
4418         spin_unlock(&priv->lock);
4419
4420         return IRQ_HANDLED;
4421
4422  none:
4423         /* re-enable interrupts here since we don't have anything to service. */
4424         /* only Re-enable if disabled by irq */
4425         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4426                 iwl3945_enable_interrupts(priv);
4427         spin_unlock(&priv->lock);
4428         return IRQ_NONE;
4429 }
4430
4431 /************************** EEPROM BANDS ****************************
4432  *
4433  * The iwl3945_eeprom_band definitions below provide the mapping from the
4434  * EEPROM contents to the specific channel number supported for each
4435  * band.
4436  *
4437  * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
4438  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4439  * The specific geography and calibration information for that channel
4440  * is contained in the eeprom map itself.
4441  *
4442  * During init, we copy the eeprom information and channel map
4443  * information into priv->channel_info_24/52 and priv->channel_map_24/52
4444  *
4445  * channel_map_24/52 provides the index in the channel_info array for a
4446  * given channel.  We have to have two separate maps as there is channel
4447  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4448  * band_2
4449  *
4450  * A value of 0xff stored in the channel_map indicates that the channel
4451  * is not supported by the hardware at all.
4452  *
4453  * A value of 0xfe in the channel_map indicates that the channel is not
4454  * valid for Tx with the current hardware.  This means that
4455  * while the system can tune and receive on a given channel, it may not
4456  * be able to associate or transmit any frames on that
4457  * channel.  There is no corresponding channel information for that
4458  * entry.
4459  *
4460  *********************************************************************/
4461
4462 /* 2.4 GHz */
4463 static const u8 iwl3945_eeprom_band_1[14] = {
4464         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4465 };
4466
4467 /* 5.2 GHz bands */
4468 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
4469         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4470 };
4471
4472 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
4473         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4474 };
4475
4476 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
4477         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4478 };
4479
4480 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
4481         145, 149, 153, 157, 161, 165
4482 };
4483
4484 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
4485                                     int *eeprom_ch_count,
4486                                     const struct iwl3945_eeprom_channel
4487                                     **eeprom_ch_info,
4488                                     const u8 **eeprom_ch_index)
4489 {
4490         switch (band) {
4491         case 1:         /* 2.4GHz band */
4492                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4493                 *eeprom_ch_info = priv->eeprom.band_1_channels;
4494                 *eeprom_ch_index = iwl3945_eeprom_band_1;
4495                 break;
4496         case 2:         /* 4.9GHz band */
4497                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4498                 *eeprom_ch_info = priv->eeprom.band_2_channels;
4499                 *eeprom_ch_index = iwl3945_eeprom_band_2;
4500                 break;
4501         case 3:         /* 5.2GHz band */
4502                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4503                 *eeprom_ch_info = priv->eeprom.band_3_channels;
4504                 *eeprom_ch_index = iwl3945_eeprom_band_3;
4505                 break;
4506         case 4:         /* 5.5GHz band */
4507                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4508                 *eeprom_ch_info = priv->eeprom.band_4_channels;
4509                 *eeprom_ch_index = iwl3945_eeprom_band_4;
4510                 break;
4511         case 5:         /* 5.7GHz band */
4512                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4513                 *eeprom_ch_info = priv->eeprom.band_5_channels;
4514                 *eeprom_ch_index = iwl3945_eeprom_band_5;
4515                 break;
4516         default:
4517                 BUG();
4518                 return;
4519         }
4520 }
4521
4522 /**
4523  * iwl3945_get_channel_info - Find driver's private channel info
4524  *
4525  * Based on band and channel number.
4526  */
4527 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4528                                                     enum ieee80211_band band, u16 channel)
4529 {
4530         int i;
4531
4532         switch (band) {
4533         case IEEE80211_BAND_5GHZ:
4534                 for (i = 14; i < priv->channel_count; i++) {
4535                         if (priv->channel_info[i].channel == channel)
4536                                 return &priv->channel_info[i];
4537                 }
4538                 break;
4539
4540         case IEEE80211_BAND_2GHZ:
4541                 if (channel >= 1 && channel <= 14)
4542                         return &priv->channel_info[channel - 1];
4543                 break;
4544         case IEEE80211_NUM_BANDS:
4545                 WARN_ON(1);
4546         }
4547
4548         return NULL;
4549 }
4550
4551 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4552                             ? # x " " : "")
4553
4554 /**
4555  * iwl3945_init_channel_map - Set up driver's info for all possible channels
4556  */
4557 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
4558 {
4559         int eeprom_ch_count = 0;
4560         const u8 *eeprom_ch_index = NULL;
4561         const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
4562         int band, ch;
4563         struct iwl3945_channel_info *ch_info;
4564
4565         if (priv->channel_count) {
4566                 IWL_DEBUG_INFO("Channel map already initialized.\n");
4567                 return 0;
4568         }
4569
4570         if (priv->eeprom.version < 0x2f) {
4571                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
4572                             priv->eeprom.version);
4573                 return -EINVAL;
4574         }
4575
4576         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4577
4578         priv->channel_count =
4579             ARRAY_SIZE(iwl3945_eeprom_band_1) +
4580             ARRAY_SIZE(iwl3945_eeprom_band_2) +
4581             ARRAY_SIZE(iwl3945_eeprom_band_3) +
4582             ARRAY_SIZE(iwl3945_eeprom_band_4) +
4583             ARRAY_SIZE(iwl3945_eeprom_band_5);
4584
4585         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4586
4587         priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
4588                                      priv->channel_count, GFP_KERNEL);
4589         if (!priv->channel_info) {
4590                 IWL_ERROR("Could not allocate channel_info\n");
4591                 priv->channel_count = 0;
4592                 return -ENOMEM;
4593         }
4594
4595         ch_info = priv->channel_info;
4596
4597         /* Loop through the 5 EEPROM bands adding them in order to the
4598          * channel map we maintain (that contains additional information than
4599          * what just in the EEPROM) */
4600         for (band = 1; band <= 5; band++) {
4601
4602                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4603                                         &eeprom_ch_info, &eeprom_ch_index);
4604
4605                 /* Loop through each band adding each of the channels */
4606                 for (ch = 0; ch < eeprom_ch_count; ch++) {
4607                         ch_info->channel = eeprom_ch_index[ch];
4608                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4609                             IEEE80211_BAND_5GHZ;
4610
4611                         /* permanently store EEPROM's channel regulatory flags
4612                          *   and max power in channel info database. */
4613                         ch_info->eeprom = eeprom_ch_info[ch];
4614
4615                         /* Copy the run-time flags so they are there even on
4616                          * invalid channels */
4617                         ch_info->flags = eeprom_ch_info[ch].flags;
4618
4619                         if (!(is_channel_valid(ch_info))) {
4620                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4621                                                "No traffic\n",
4622                                                ch_info->channel,
4623                                                ch_info->flags,
4624                                                is_channel_a_band(ch_info) ?
4625                                                "5.2" : "2.4");
4626                                 ch_info++;
4627                                 continue;
4628                         }
4629
4630                         /* Initialize regulatory-based run-time data */
4631                         ch_info->max_power_avg = ch_info->curr_txpow =
4632                             eeprom_ch_info[ch].max_power_avg;
4633                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4634                         ch_info->min_power = 0;
4635
4636                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
4637                                        " %ddBm): Ad-Hoc %ssupported\n",
4638                                        ch_info->channel,
4639                                        is_channel_a_band(ch_info) ?
4640                                        "5.2" : "2.4",
4641                                        CHECK_AND_PRINT(VALID),
4642                                        CHECK_AND_PRINT(IBSS),
4643                                        CHECK_AND_PRINT(ACTIVE),
4644                                        CHECK_AND_PRINT(RADAR),
4645                                        CHECK_AND_PRINT(WIDE),
4646                                        CHECK_AND_PRINT(DFS),
4647                                        eeprom_ch_info[ch].flags,
4648                                        eeprom_ch_info[ch].max_power_avg,
4649                                        ((eeprom_ch_info[ch].
4650                                          flags & EEPROM_CHANNEL_IBSS)
4651                                         && !(eeprom_ch_info[ch].
4652                                              flags & EEPROM_CHANNEL_RADAR))
4653                                        ? "" : "not ");
4654
4655                         /* Set the user_txpower_limit to the highest power
4656                          * supported by any channel */
4657                         if (eeprom_ch_info[ch].max_power_avg >
4658                             priv->user_txpower_limit)
4659                                 priv->user_txpower_limit =
4660                                     eeprom_ch_info[ch].max_power_avg;
4661
4662                         ch_info++;
4663                 }
4664         }
4665
4666         /* Set up txpower settings in driver for all channels */
4667         if (iwl3945_txpower_set_from_eeprom(priv))
4668                 return -EIO;
4669
4670         return 0;
4671 }
4672
4673 /*
4674  * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4675  */
4676 static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
4677 {
4678         kfree(priv->channel_info);
4679         priv->channel_count = 0;
4680 }
4681
4682 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4683  * sending probe req.  This should be set long enough to hear probe responses
4684  * from more than one AP.  */
4685 #define IWL_ACTIVE_DWELL_TIME_24    (30)        /* all times in msec */
4686 #define IWL_ACTIVE_DWELL_TIME_52    (20)
4687
4688 #define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
4689 #define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
4690
4691 /* For faster active scanning, scan will move to the next channel if fewer than
4692  * PLCP_QUIET_THRESH packets are heard on this channel within
4693  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4694  * time if it's a quiet channel (nothing responded to our probe, and there's
4695  * no other traffic).
4696  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4697 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4698 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(10)  /* msec */
4699
4700 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4701  * Must be set longer than active dwell time.
4702  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4703 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4704 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4705 #define IWL_PASSIVE_DWELL_BASE      (100)
4706 #define IWL_CHANNEL_TUNE_TIME       5
4707
4708 #define IWL_SCAN_PROBE_MASK(n)   (BIT(n) | (BIT(n) - BIT(1)))
4709
4710 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
4711                                                 enum ieee80211_band band,
4712                                                 u8 n_probes)
4713 {
4714         if (band == IEEE80211_BAND_5GHZ)
4715                 return IWL_ACTIVE_DWELL_TIME_52 +
4716                         IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
4717         else
4718                 return IWL_ACTIVE_DWELL_TIME_24 +
4719                         IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
4720 }
4721
4722 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
4723                                           enum ieee80211_band band)
4724 {
4725         u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4726             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4727             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4728
4729         if (iwl3945_is_associated(priv)) {
4730                 /* If we're associated, we clamp the maximum passive
4731                  * dwell time to be 98% of the beacon interval (minus
4732                  * 2 * channel tune time) */
4733                 passive = priv->beacon_int;
4734                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4735                         passive = IWL_PASSIVE_DWELL_BASE;
4736                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4737         }
4738
4739         return passive;
4740 }
4741
4742 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
4743                                          enum ieee80211_band band,
4744                                      u8 is_active, u8 n_probes,
4745                                      struct iwl3945_scan_channel *scan_ch)
4746 {
4747         const struct ieee80211_channel *channels = NULL;
4748         const struct ieee80211_supported_band *sband;
4749         const struct iwl3945_channel_info *ch_info;
4750         u16 passive_dwell = 0;
4751         u16 active_dwell = 0;
4752         int added, i;
4753
4754         sband = iwl3945_get_band(priv, band);
4755         if (!sband)
4756                 return 0;
4757
4758         channels = sband->channels;
4759
4760         active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4761         passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4762
4763         if (passive_dwell <= active_dwell)
4764                 passive_dwell = active_dwell + 1;
4765
4766         for (i = 0, added = 0; i < sband->n_channels; i++) {
4767                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4768                         continue;
4769
4770                 scan_ch->channel = channels[i].hw_value;
4771
4772                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4773                 if (!is_channel_valid(ch_info)) {
4774                         IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4775                                        scan_ch->channel);
4776                         continue;
4777                 }
4778
4779                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4780                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4781                 /* If passive , set up for auto-switch
4782                  *  and use long active_dwell time.
4783                  */
4784                 if (!is_active || is_channel_passive(ch_info) ||
4785                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
4786                         scan_ch->type = 0;      /* passive */
4787                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
4788                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
4789                 } else {
4790                         scan_ch->type = 1;      /* active */
4791                 }
4792
4793                 /* Set direct probe bits. These may be used both for active
4794                  * scan channels (probes gets sent right away),
4795                  * or for passive channels (probes get se sent only after
4796                  * hearing clear Rx packet).*/
4797                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
4798                         if (n_probes)
4799                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4800                 } else {
4801                         /* uCode v1 does not allow setting direct probe bits on
4802                          * passive channel. */
4803                         if ((scan_ch->type & 1) && n_probes)
4804                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4805                 }
4806
4807                 /* Set txpower levels to defaults */
4808                 scan_ch->tpc.dsp_atten = 110;
4809                 /* scan_pwr_info->tpc.dsp_atten; */
4810
4811                 /*scan_pwr_info->tpc.tx_gain; */
4812                 if (band == IEEE80211_BAND_5GHZ)
4813                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4814                 else {
4815                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4816                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4817                          * power level:
4818                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4819                          */
4820                 }
4821
4822                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4823                                scan_ch->channel,
4824                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4825                                (scan_ch->type & 1) ?
4826                                active_dwell : passive_dwell);
4827
4828                 scan_ch++;
4829                 added++;
4830         }
4831
4832         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4833         return added;
4834 }
4835
4836 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
4837                               struct ieee80211_rate *rates)
4838 {
4839         int i;
4840
4841         for (i = 0; i < IWL_RATE_COUNT; i++) {
4842                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4843                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4844                 rates[i].hw_value_short = i;
4845                 rates[i].flags = 0;
4846                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4847                         /*
4848                          * If CCK != 1M then set short preamble rate flag.
4849                          */
4850                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4851                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4852                 }
4853         }
4854 }
4855
4856 /**
4857  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
4858  */
4859 static int iwl3945_init_geos(struct iwl3945_priv *priv)
4860 {
4861         struct iwl3945_channel_info *ch;
4862         struct ieee80211_supported_band *sband;
4863         struct ieee80211_channel *channels;
4864         struct ieee80211_channel *geo_ch;
4865         struct ieee80211_rate *rates;
4866         int i = 0;
4867
4868         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4869             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4870                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4871                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4872                 return 0;
4873         }
4874
4875         channels = kzalloc(sizeof(struct ieee80211_channel) *
4876                            priv->channel_count, GFP_KERNEL);
4877         if (!channels)
4878                 return -ENOMEM;
4879
4880         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4881                         GFP_KERNEL);
4882         if (!rates) {
4883                 kfree(channels);
4884                 return -ENOMEM;
4885         }
4886
4887         /* 5.2GHz channels start after the 2.4GHz channels */
4888         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4889         sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4890         /* just OFDM */
4891         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4892         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4893
4894         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4895         sband->channels = channels;
4896         /* OFDM & CCK */
4897         sband->bitrates = rates;
4898         sband->n_bitrates = IWL_RATE_COUNT;
4899
4900         priv->ieee_channels = channels;
4901         priv->ieee_rates = rates;
4902
4903         iwl3945_init_hw_rates(priv, rates);
4904
4905         for (i = 0;  i < priv->channel_count; i++) {
4906                 ch = &priv->channel_info[i];
4907
4908                 /* FIXME: might be removed if scan is OK*/
4909                 if (!is_channel_valid(ch))
4910                         continue;
4911
4912                 if (is_channel_a_band(ch))
4913                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4914                 else
4915                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4916
4917                 geo_ch = &sband->channels[sband->n_channels++];
4918
4919                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4920                 geo_ch->max_power = ch->max_power_avg;
4921                 geo_ch->max_antenna_gain = 0xff;
4922                 geo_ch->hw_value = ch->channel;
4923
4924                 if (is_channel_valid(ch)) {
4925                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4926                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4927
4928                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4929                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4930
4931                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4932                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4933
4934                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4935                                 priv->max_channel_txpower_limit =
4936                                     ch->max_power_avg;
4937                 } else {
4938                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4939                 }
4940
4941                 /* Save flags for reg domain usage */
4942                 geo_ch->orig_flags = geo_ch->flags;
4943
4944                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4945                                 ch->channel, geo_ch->center_freq,
4946                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4947                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4948                                 "restricted" : "valid",
4949                                  geo_ch->flags);
4950         }
4951
4952         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4953              priv->cfg->sku & IWL_SKU_A) {
4954                 printk(KERN_INFO DRV_NAME
4955                        ": Incorrectly detected BG card as ABG.  Please send "
4956                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4957                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
4958                  priv->cfg->sku &= ~IWL_SKU_A;
4959         }
4960
4961         printk(KERN_INFO DRV_NAME
4962                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4963                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4964                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4965
4966         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4967                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4968                         &priv->bands[IEEE80211_BAND_2GHZ];
4969         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4970                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4971                         &priv->bands[IEEE80211_BAND_5GHZ];
4972
4973         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4974
4975         return 0;
4976 }
4977
4978 /*
4979  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
4980  */
4981 static void iwl3945_free_geos(struct iwl3945_priv *priv)
4982 {
4983         kfree(priv->ieee_channels);
4984         kfree(priv->ieee_rates);
4985         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4986 }
4987
4988 /******************************************************************************
4989  *
4990  * uCode download functions
4991  *
4992  ******************************************************************************/
4993
4994 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
4995 {
4996         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4997         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4998         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4999         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5000         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5001         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5002 }
5003
5004 /**
5005  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5006  *     looking at all data.
5007  */
5008 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 *image, u32 len)
5009 {
5010         u32 val;
5011         u32 save_len = len;
5012         int rc = 0;
5013         u32 errcnt;
5014
5015         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5016
5017         rc = iwl3945_grab_nic_access(priv);
5018         if (rc)
5019                 return rc;
5020
5021         iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5022
5023         errcnt = 0;
5024         for (; len > 0; len -= sizeof(u32), image++) {
5025                 /* read data comes through single port, auto-incr addr */
5026                 /* NOTE: Use the debugless read so we don't flood kernel log
5027                  * if IWL_DL_IO is set */
5028                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5029                 if (val != le32_to_cpu(*image)) {
5030                         IWL_ERROR("uCode INST section is invalid at "
5031                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5032                                   save_len - len, val, le32_to_cpu(*image));
5033                         rc = -EIO;
5034                         errcnt++;
5035                         if (errcnt >= 20)
5036                                 break;
5037                 }
5038         }
5039
5040         iwl3945_release_nic_access(priv);
5041
5042         if (!errcnt)
5043                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5044
5045         return rc;
5046 }
5047
5048
5049 /**
5050  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5051  *   using sample data 100 bytes apart.  If these sample points are good,
5052  *   it's a pretty good bet that everything between them is good, too.
5053  */
5054 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5055 {
5056         u32 val;
5057         int rc = 0;
5058         u32 errcnt = 0;
5059         u32 i;
5060
5061         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5062
5063         rc = iwl3945_grab_nic_access(priv);
5064         if (rc)
5065                 return rc;
5066
5067         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5068                 /* read data comes through single port, auto-incr addr */
5069                 /* NOTE: Use the debugless read so we don't flood kernel log
5070                  * if IWL_DL_IO is set */
5071                 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5072                         i + RTC_INST_LOWER_BOUND);
5073                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5074                 if (val != le32_to_cpu(*image)) {
5075 #if 0 /* Enable this if you want to see details */
5076                         IWL_ERROR("uCode INST section is invalid at "
5077                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5078                                   i, val, *image);
5079 #endif
5080                         rc = -EIO;
5081                         errcnt++;
5082                         if (errcnt >= 3)
5083                                 break;
5084                 }
5085         }
5086
5087         iwl3945_release_nic_access(priv);
5088
5089         return rc;
5090 }
5091
5092
5093 /**
5094  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5095  *    and verify its contents
5096  */
5097 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5098 {
5099         __le32 *image;
5100         u32 len;
5101         int rc = 0;
5102
5103         /* Try bootstrap */
5104         image = (__le32 *)priv->ucode_boot.v_addr;
5105         len = priv->ucode_boot.len;
5106         rc = iwl3945_verify_inst_sparse(priv, image, len);
5107         if (rc == 0) {
5108                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5109                 return 0;
5110         }
5111
5112         /* Try initialize */
5113         image = (__le32 *)priv->ucode_init.v_addr;
5114         len = priv->ucode_init.len;
5115         rc = iwl3945_verify_inst_sparse(priv, image, len);
5116         if (rc == 0) {
5117                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5118                 return 0;
5119         }
5120
5121         /* Try runtime/protocol */
5122         image = (__le32 *)priv->ucode_code.v_addr;
5123         len = priv->ucode_code.len;
5124         rc = iwl3945_verify_inst_sparse(priv, image, len);
5125         if (rc == 0) {
5126                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5127                 return 0;
5128         }
5129
5130         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5131
5132         /* Since nothing seems to match, show first several data entries in
5133          * instruction SRAM, so maybe visual inspection will give a clue.
5134          * Selection of bootstrap image (vs. other images) is arbitrary. */
5135         image = (__le32 *)priv->ucode_boot.v_addr;
5136         len = priv->ucode_boot.len;
5137         rc = iwl3945_verify_inst_full(priv, image, len);
5138
5139         return rc;
5140 }
5141
5142
5143 /* check contents of special bootstrap uCode SRAM */
5144 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5145 {
5146         __le32 *image = priv->ucode_boot.v_addr;
5147         u32 len = priv->ucode_boot.len;
5148         u32 reg;
5149         u32 val;
5150
5151         IWL_DEBUG_INFO("Begin verify bsm\n");
5152
5153         /* verify BSM SRAM contents */
5154         val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5155         for (reg = BSM_SRAM_LOWER_BOUND;
5156              reg < BSM_SRAM_LOWER_BOUND + len;
5157              reg += sizeof(u32), image++) {
5158                 val = iwl3945_read_prph(priv, reg);
5159                 if (val != le32_to_cpu(*image)) {
5160                         IWL_ERROR("BSM uCode verification failed at "
5161                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5162                                   BSM_SRAM_LOWER_BOUND,
5163                                   reg - BSM_SRAM_LOWER_BOUND, len,
5164                                   val, le32_to_cpu(*image));
5165                         return -EIO;
5166                 }
5167         }
5168
5169         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5170
5171         return 0;
5172 }
5173
5174 /**
5175  * iwl3945_load_bsm - Load bootstrap instructions
5176  *
5177  * BSM operation:
5178  *
5179  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5180  * in special SRAM that does not power down during RFKILL.  When powering back
5181  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5182  * the bootstrap program into the on-board processor, and starts it.
5183  *
5184  * The bootstrap program loads (via DMA) instructions and data for a new
5185  * program from host DRAM locations indicated by the host driver in the
5186  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5187  * automatically.
5188  *
5189  * When initializing the NIC, the host driver points the BSM to the
5190  * "initialize" uCode image.  This uCode sets up some internal data, then
5191  * notifies host via "initialize alive" that it is complete.
5192  *
5193  * The host then replaces the BSM_DRAM_* pointer values to point to the
5194  * normal runtime uCode instructions and a backup uCode data cache buffer
5195  * (filled initially with starting data values for the on-board processor),
5196  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5197  * which begins normal operation.
5198  *
5199  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5200  * the backup data cache in DRAM before SRAM is powered down.
5201  *
5202  * When powering back up, the BSM loads the bootstrap program.  This reloads
5203  * the runtime uCode instructions and the backup data cache into SRAM,
5204  * and re-launches the runtime uCode from where it left off.
5205  */
5206 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5207 {
5208         __le32 *image = priv->ucode_boot.v_addr;
5209         u32 len = priv->ucode_boot.len;
5210         dma_addr_t pinst;
5211         dma_addr_t pdata;
5212         u32 inst_len;
5213         u32 data_len;
5214         int rc;
5215         int i;
5216         u32 done;
5217         u32 reg_offset;
5218
5219         IWL_DEBUG_INFO("Begin load bsm\n");
5220
5221         /* make sure bootstrap program is no larger than BSM's SRAM size */
5222         if (len > IWL_MAX_BSM_SIZE)
5223                 return -EINVAL;
5224
5225         /* Tell bootstrap uCode where to find the "Initialize" uCode
5226          *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5227          * NOTE:  iwl3945_initialize_alive_start() will replace these values,
5228          *        after the "initialize" uCode has run, to point to
5229          *        runtime/protocol instructions and backup data cache. */
5230         pinst = priv->ucode_init.p_addr;
5231         pdata = priv->ucode_init_data.p_addr;
5232         inst_len = priv->ucode_init.len;
5233         data_len = priv->ucode_init_data.len;
5234
5235         rc = iwl3945_grab_nic_access(priv);
5236         if (rc)
5237                 return rc;
5238
5239         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5240         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5241         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5242         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5243
5244         /* Fill BSM memory with bootstrap instructions */
5245         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5246              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5247              reg_offset += sizeof(u32), image++)
5248                 _iwl3945_write_prph(priv, reg_offset,
5249                                           le32_to_cpu(*image));
5250
5251         rc = iwl3945_verify_bsm(priv);
5252         if (rc) {
5253                 iwl3945_release_nic_access(priv);
5254                 return rc;
5255         }
5256
5257         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5258         iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5259         iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5260                                  RTC_INST_LOWER_BOUND);
5261         iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5262
5263         /* Load bootstrap code into instruction SRAM now,
5264          *   to prepare to load "initialize" uCode */
5265         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5266                 BSM_WR_CTRL_REG_BIT_START);
5267
5268         /* Wait for load of bootstrap uCode to finish */
5269         for (i = 0; i < 100; i++) {
5270                 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5271                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5272                         break;
5273                 udelay(10);
5274         }
5275         if (i < 100)
5276                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5277         else {
5278                 IWL_ERROR("BSM write did not complete!\n");
5279                 return -EIO;
5280         }
5281
5282         /* Enable future boot loads whenever power management unit triggers it
5283          *   (e.g. when powering back up after power-save shutdown) */
5284         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5285                 BSM_WR_CTRL_REG_BIT_START_EN);
5286
5287         iwl3945_release_nic_access(priv);
5288
5289         return 0;
5290 }
5291
5292 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5293 {
5294         /* Remove all resets to allow NIC to operate */
5295         iwl3945_write32(priv, CSR_RESET, 0);
5296 }
5297
5298 /**
5299  * iwl3945_read_ucode - Read uCode images from disk file.
5300  *
5301  * Copy into buffers for card to fetch via bus-mastering
5302  */
5303 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5304 {
5305         struct iwl3945_ucode *ucode;
5306         int ret = -EINVAL, index;
5307         const struct firmware *ucode_raw;
5308         /* firmware file name contains uCode/driver compatibility version */
5309         const char *name_pre = priv->cfg->fw_name_pre;
5310         const unsigned int api_max = priv->cfg->ucode_api_max;
5311         const unsigned int api_min = priv->cfg->ucode_api_min;
5312         char buf[25];
5313         u8 *src;
5314         size_t len;
5315         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
5316
5317         /* Ask kernel firmware_class module to get the boot firmware off disk.
5318          * request_firmware() is synchronous, file is in memory on return. */
5319         for (index = api_max; index >= api_min; index--) {
5320                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
5321                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
5322                 if (ret < 0) {
5323                         IWL_ERROR("%s firmware file req failed: Reason %d\n",
5324                                   buf, ret);
5325                         if (ret == -ENOENT)
5326                                 continue;
5327                         else
5328                                 goto error;
5329                 } else {
5330                         if (index < api_max)
5331                                 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
5332                                           buf, api_max);
5333                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5334                                        buf, ucode_raw->size);
5335                         break;
5336                 }
5337         }
5338
5339         if (ret < 0)
5340                 goto error;
5341
5342         /* Make sure that we got at least our header! */
5343         if (ucode_raw->size < sizeof(*ucode)) {
5344                 IWL_ERROR("File size way too small!\n");
5345                 ret = -EINVAL;
5346                 goto err_release;
5347         }
5348
5349         /* Data from ucode file:  header followed by uCode images */
5350         ucode = (void *)ucode_raw->data;
5351
5352         priv->ucode_ver = le32_to_cpu(ucode->ver);
5353         api_ver = IWL_UCODE_API(priv->ucode_ver);
5354         inst_size = le32_to_cpu(ucode->inst_size);
5355         data_size = le32_to_cpu(ucode->data_size);
5356         init_size = le32_to_cpu(ucode->init_size);
5357         init_data_size = le32_to_cpu(ucode->init_data_size);
5358         boot_size = le32_to_cpu(ucode->boot_size);
5359
5360         /* api_ver should match the api version forming part of the
5361          * firmware filename ... but we don't check for that and only rely
5362          * on the API version read from firware header from here on forward */
5363
5364         if (api_ver < api_min || api_ver > api_max) {
5365                 IWL_ERROR("Driver unable to support your firmware API. "
5366                           "Driver supports v%u, firmware is v%u.\n",
5367                           api_max, api_ver);
5368                 priv->ucode_ver = 0;
5369                 ret = -EINVAL;
5370                 goto err_release;
5371         }
5372         if (api_ver != api_max)
5373                 IWL_ERROR("Firmware has old API version. Expected %u, "
5374                           "got %u. New firmware can be obtained "
5375                           "from http://www.intellinuxwireless.org.\n",
5376                           api_max, api_ver);
5377
5378         printk(KERN_INFO DRV_NAME " loaded firmware version %u.%u.%u.%u\n",
5379                        IWL_UCODE_MAJOR(priv->ucode_ver),
5380                        IWL_UCODE_MINOR(priv->ucode_ver),
5381                        IWL_UCODE_API(priv->ucode_ver),
5382                        IWL_UCODE_SERIAL(priv->ucode_ver));
5383         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
5384                        priv->ucode_ver);
5385         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5386         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5387         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5388         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5389         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5390
5391
5392         /* Verify size of file vs. image size info in file's header */
5393         if (ucode_raw->size < sizeof(*ucode) +
5394                 inst_size + data_size + init_size +
5395                 init_data_size + boot_size) {
5396
5397                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5398                                (int)ucode_raw->size);
5399                 ret = -EINVAL;
5400                 goto err_release;
5401         }
5402
5403         /* Verify that uCode images will fit in card's SRAM */
5404         if (inst_size > IWL_MAX_INST_SIZE) {
5405                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5406                                inst_size);
5407                 ret = -EINVAL;
5408                 goto err_release;
5409         }
5410
5411         if (data_size > IWL_MAX_DATA_SIZE) {
5412                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5413                                data_size);
5414                 ret = -EINVAL;
5415                 goto err_release;
5416         }
5417         if (init_size > IWL_MAX_INST_SIZE) {
5418                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5419                                 init_size);
5420                 ret = -EINVAL;
5421                 goto err_release;
5422         }
5423         if (init_data_size > IWL_MAX_DATA_SIZE) {
5424                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5425                                 init_data_size);
5426                 ret = -EINVAL;
5427                 goto err_release;
5428         }
5429         if (boot_size > IWL_MAX_BSM_SIZE) {
5430                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5431                                 boot_size);
5432                 ret = -EINVAL;
5433                 goto err_release;
5434         }
5435
5436         /* Allocate ucode buffers for card's bus-master loading ... */
5437
5438         /* Runtime instructions and 2 copies of data:
5439          * 1) unmodified from disk
5440          * 2) backup cache for save/restore during power-downs */
5441         priv->ucode_code.len = inst_size;
5442         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5443
5444         priv->ucode_data.len = data_size;
5445         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5446
5447         priv->ucode_data_backup.len = data_size;
5448         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5449
5450         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5451             !priv->ucode_data_backup.v_addr)
5452                 goto err_pci_alloc;
5453
5454         /* Initialization instructions and data */
5455         if (init_size && init_data_size) {
5456                 priv->ucode_init.len = init_size;
5457                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5458
5459                 priv->ucode_init_data.len = init_data_size;
5460                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5461
5462                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5463                         goto err_pci_alloc;
5464         }
5465
5466         /* Bootstrap (instructions only, no data) */
5467         if (boot_size) {
5468                 priv->ucode_boot.len = boot_size;
5469                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5470
5471                 if (!priv->ucode_boot.v_addr)
5472                         goto err_pci_alloc;
5473         }
5474
5475         /* Copy images into buffers for card's bus-master reads ... */
5476
5477         /* Runtime instructions (first block of data in file) */
5478         src = &ucode->data[0];
5479         len = priv->ucode_code.len;
5480         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5481         memcpy(priv->ucode_code.v_addr, src, len);
5482         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5483                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5484
5485         /* Runtime data (2nd block)
5486          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
5487         src = &ucode->data[inst_size];
5488         len = priv->ucode_data.len;
5489         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5490         memcpy(priv->ucode_data.v_addr, src, len);
5491         memcpy(priv->ucode_data_backup.v_addr, src, len);
5492
5493         /* Initialization instructions (3rd block) */
5494         if (init_size) {
5495                 src = &ucode->data[inst_size + data_size];
5496                 len = priv->ucode_init.len;
5497                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5498                                len);
5499                 memcpy(priv->ucode_init.v_addr, src, len);
5500         }
5501
5502         /* Initialization data (4th block) */
5503         if (init_data_size) {
5504                 src = &ucode->data[inst_size + data_size + init_size];
5505                 len = priv->ucode_init_data.len;
5506                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5507                                (int)len);
5508                 memcpy(priv->ucode_init_data.v_addr, src, len);
5509         }
5510
5511         /* Bootstrap instructions (5th block) */
5512         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5513         len = priv->ucode_boot.len;
5514         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5515                        (int)len);
5516         memcpy(priv->ucode_boot.v_addr, src, len);
5517
5518         /* We have our copies now, allow OS release its copies */
5519         release_firmware(ucode_raw);
5520         return 0;
5521
5522  err_pci_alloc:
5523         IWL_ERROR("failed to allocate pci memory\n");
5524         ret = -ENOMEM;
5525         iwl3945_dealloc_ucode_pci(priv);
5526
5527  err_release:
5528         release_firmware(ucode_raw);
5529
5530  error:
5531         return ret;
5532 }
5533
5534
5535 /**
5536  * iwl3945_set_ucode_ptrs - Set uCode address location
5537  *
5538  * Tell initialization uCode where to find runtime uCode.
5539  *
5540  * BSM registers initially contain pointers to initialization uCode.
5541  * We need to replace them to load runtime uCode inst and data,
5542  * and to save runtime data when powering down.
5543  */
5544 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
5545 {
5546         dma_addr_t pinst;
5547         dma_addr_t pdata;
5548         int rc = 0;
5549         unsigned long flags;
5550
5551         /* bits 31:0 for 3945 */
5552         pinst = priv->ucode_code.p_addr;
5553         pdata = priv->ucode_data_backup.p_addr;
5554
5555         spin_lock_irqsave(&priv->lock, flags);
5556         rc = iwl3945_grab_nic_access(priv);
5557         if (rc) {
5558                 spin_unlock_irqrestore(&priv->lock, flags);
5559                 return rc;
5560         }
5561
5562         /* Tell bootstrap uCode where to find image to load */
5563         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5564         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5565         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5566                                  priv->ucode_data.len);
5567
5568         /* Inst byte count must be last to set up, bit 31 signals uCode
5569          *   that all new ptr/size info is in place */
5570         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5571                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5572
5573         iwl3945_release_nic_access(priv);
5574
5575         spin_unlock_irqrestore(&priv->lock, flags);
5576
5577         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5578
5579         return rc;
5580 }
5581
5582 /**
5583  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5584  *
5585  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5586  *
5587  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5588  */
5589 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
5590 {
5591         /* Check alive response for "valid" sign from uCode */
5592         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5593                 /* We had an error bringing up the hardware, so take it
5594                  * all the way back down so we can try again */
5595                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5596                 goto restart;
5597         }
5598
5599         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5600          * This is a paranoid check, because we would not have gotten the
5601          * "initialize" alive if code weren't properly loaded.  */
5602         if (iwl3945_verify_ucode(priv)) {
5603                 /* Runtime instruction load was bad;
5604                  * take it all the way back down so we can try again */
5605                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5606                 goto restart;
5607         }
5608
5609         /* Send pointers to protocol/runtime uCode image ... init code will
5610          * load and launch runtime uCode, which will send us another "Alive"
5611          * notification. */
5612         IWL_DEBUG_INFO("Initialization Alive received.\n");
5613         if (iwl3945_set_ucode_ptrs(priv)) {
5614                 /* Runtime instruction load won't happen;
5615                  * take it all the way back down so we can try again */
5616                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5617                 goto restart;
5618         }
5619         return;
5620
5621  restart:
5622         queue_work(priv->workqueue, &priv->restart);
5623 }
5624
5625
5626 /* temporary */
5627 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
5628                                      struct sk_buff *skb);
5629
5630 /**
5631  * iwl3945_alive_start - called after REPLY_ALIVE notification received
5632  *                   from protocol/runtime uCode (initialization uCode's
5633  *                   Alive gets handled by iwl3945_init_alive_start()).
5634  */
5635 static void iwl3945_alive_start(struct iwl3945_priv *priv)
5636 {
5637         int rc = 0;
5638         int thermal_spin = 0;
5639         u32 rfkill;
5640
5641         IWL_DEBUG_INFO("Runtime Alive received.\n");
5642
5643         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5644                 /* We had an error bringing up the hardware, so take it
5645                  * all the way back down so we can try again */
5646                 IWL_DEBUG_INFO("Alive failed.\n");
5647                 goto restart;
5648         }
5649
5650         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5651          * This is a paranoid check, because we would not have gotten the
5652          * "runtime" alive if code weren't properly loaded.  */
5653         if (iwl3945_verify_ucode(priv)) {
5654                 /* Runtime instruction load was bad;
5655                  * take it all the way back down so we can try again */
5656                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5657                 goto restart;
5658         }
5659
5660         iwl3945_clear_stations_table(priv);
5661
5662         rc = iwl3945_grab_nic_access(priv);
5663         if (rc) {
5664                 IWL_WARNING("Can not read RFKILL status from adapter\n");
5665                 return;
5666         }
5667
5668         rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
5669         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5670         iwl3945_release_nic_access(priv);
5671
5672         if (rfkill & 0x1) {
5673                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5674                 /* if RFKILL is not on, then wait for thermal
5675                  * sensor in adapter to kick in */
5676                 while (iwl3945_hw_get_temperature(priv) == 0) {
5677                         thermal_spin++;
5678                         udelay(10);
5679                 }
5680
5681                 if (thermal_spin)
5682                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5683                                        thermal_spin * 10);
5684         } else
5685                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5686
5687         /* After the ALIVE response, we can send commands to 3945 uCode */
5688         set_bit(STATUS_ALIVE, &priv->status);
5689
5690         /* Clear out the uCode error bit if it is set */
5691         clear_bit(STATUS_FW_ERROR, &priv->status);
5692
5693         if (iwl3945_is_rfkill(priv))
5694                 return;
5695
5696         ieee80211_wake_queues(priv->hw);
5697
5698         priv->active_rate = priv->rates_mask;
5699         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5700
5701         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5702
5703         if (iwl3945_is_associated(priv)) {
5704                 struct iwl3945_rxon_cmd *active_rxon =
5705                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
5706
5707                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5708                        sizeof(priv->staging_rxon));
5709                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5710         } else {
5711                 /* Initialize our rx_config data */
5712                 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
5713                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5714         }
5715
5716         /* Configure Bluetooth device coexistence support */
5717         iwl3945_send_bt_config(priv);
5718
5719         /* Configure the adapter for unassociated operation */
5720         iwl3945_commit_rxon(priv);
5721
5722         iwl3945_reg_txpower_periodic(priv);
5723
5724         iwl3945_led_register(priv);
5725
5726         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5727         set_bit(STATUS_READY, &priv->status);
5728         wake_up_interruptible(&priv->wait_command_queue);
5729
5730         if (priv->error_recovering)
5731                 iwl3945_error_recovery(priv);
5732
5733         /* reassociate for ADHOC mode */
5734         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
5735                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
5736                                                                 priv->vif);
5737                 if (beacon)
5738                         iwl3945_mac_beacon_update(priv->hw, beacon);
5739         }
5740
5741         return;
5742
5743  restart:
5744         queue_work(priv->workqueue, &priv->restart);
5745 }
5746
5747 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
5748
5749 static void __iwl3945_down(struct iwl3945_priv *priv)
5750 {
5751         unsigned long flags;
5752         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5753         struct ieee80211_conf *conf = NULL;
5754
5755         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5756
5757         conf = ieee80211_get_hw_conf(priv->hw);
5758
5759         if (!exit_pending)
5760                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5761
5762         iwl3945_led_unregister(priv);
5763         iwl3945_clear_stations_table(priv);
5764
5765         /* Unblock any waiting calls */
5766         wake_up_interruptible_all(&priv->wait_command_queue);
5767
5768         /* Wipe out the EXIT_PENDING status bit if we are not actually
5769          * exiting the module */
5770         if (!exit_pending)
5771                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5772
5773         /* stop and reset the on-board processor */
5774         iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5775
5776         /* tell the device to stop sending interrupts */
5777         spin_lock_irqsave(&priv->lock, flags);
5778         iwl3945_disable_interrupts(priv);
5779         spin_unlock_irqrestore(&priv->lock, flags);
5780         iwl_synchronize_irq(priv);
5781
5782         if (priv->mac80211_registered)
5783                 ieee80211_stop_queues(priv->hw);
5784
5785         /* If we have not previously called iwl3945_init() then
5786          * clear all bits but the RF Kill and SUSPEND bits and return */
5787         if (!iwl3945_is_init(priv)) {
5788                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5789                                         STATUS_RF_KILL_HW |
5790                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5791                                         STATUS_RF_KILL_SW |
5792                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5793                                         STATUS_GEO_CONFIGURED |
5794                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5795                                         STATUS_IN_SUSPEND |
5796                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5797                                         STATUS_EXIT_PENDING;
5798                 goto exit;
5799         }
5800
5801         /* ...otherwise clear out all the status bits but the RF Kill and
5802          * SUSPEND bits and continue taking the NIC down. */
5803         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5804                                 STATUS_RF_KILL_HW |
5805                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5806                                 STATUS_RF_KILL_SW |
5807                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5808                                 STATUS_GEO_CONFIGURED |
5809                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5810                                 STATUS_IN_SUSPEND |
5811                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5812                                 STATUS_FW_ERROR |
5813                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5814                                 STATUS_EXIT_PENDING;
5815
5816         spin_lock_irqsave(&priv->lock, flags);
5817         iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5818         spin_unlock_irqrestore(&priv->lock, flags);
5819
5820         iwl3945_hw_txq_ctx_stop(priv);
5821         iwl3945_hw_rxq_stop(priv);
5822
5823         spin_lock_irqsave(&priv->lock, flags);
5824         if (!iwl3945_grab_nic_access(priv)) {
5825                 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
5826                                          APMG_CLK_VAL_DMA_CLK_RQT);
5827                 iwl3945_release_nic_access(priv);
5828         }
5829         spin_unlock_irqrestore(&priv->lock, flags);
5830
5831         udelay(5);
5832
5833         iwl3945_hw_nic_stop_master(priv);
5834         iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5835         iwl3945_hw_nic_reset(priv);
5836
5837  exit:
5838         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
5839
5840         if (priv->ibss_beacon)
5841                 dev_kfree_skb(priv->ibss_beacon);
5842         priv->ibss_beacon = NULL;
5843
5844         /* clear out any free frames */
5845         iwl3945_clear_free_frames(priv);
5846 }
5847
5848 static void iwl3945_down(struct iwl3945_priv *priv)
5849 {
5850         mutex_lock(&priv->mutex);
5851         __iwl3945_down(priv);
5852         mutex_unlock(&priv->mutex);
5853
5854         iwl3945_cancel_deferred_work(priv);
5855 }
5856
5857 #define MAX_HW_RESTARTS 5
5858
5859 static int __iwl3945_up(struct iwl3945_priv *priv)
5860 {
5861         int rc, i;
5862
5863         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5864                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5865                 return -EIO;
5866         }
5867
5868         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5869                 IWL_WARNING("Radio disabled by SW RF kill (module "
5870                             "parameter)\n");
5871                 return -ENODEV;
5872         }
5873
5874         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5875                 IWL_ERROR("ucode not available for device bring up\n");
5876                 return -EIO;
5877         }
5878
5879         /* If platform's RF_KILL switch is NOT set to KILL */
5880         if (iwl3945_read32(priv, CSR_GP_CNTRL) &
5881                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5882                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5883         else {
5884                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5885                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5886                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5887                         return -ENODEV;
5888                 }
5889         }
5890
5891         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
5892
5893         rc = iwl3945_hw_nic_init(priv);
5894         if (rc) {
5895                 IWL_ERROR("Unable to int nic\n");
5896                 return rc;
5897         }
5898
5899         /* make sure rfkill handshake bits are cleared */
5900         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5901         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5902                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5903
5904         /* clear (again), then enable host interrupts */
5905         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
5906         iwl3945_enable_interrupts(priv);
5907
5908         /* really make sure rfkill handshake bits are cleared */
5909         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5910         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5911
5912         /* Copy original ucode data image from disk into backup cache.
5913          * This will be used to initialize the on-board processor's
5914          * data SRAM for a clean start when the runtime program first loads. */
5915         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5916                priv->ucode_data.len);
5917
5918         /* We return success when we resume from suspend and rf_kill is on. */
5919         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5920                 return 0;
5921
5922         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5923
5924                 iwl3945_clear_stations_table(priv);
5925
5926                 /* load bootstrap state machine,
5927                  * load bootstrap program into processor's memory,
5928                  * prepare to load the "initialize" uCode */
5929                 rc = iwl3945_load_bsm(priv);
5930
5931                 if (rc) {
5932                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5933                         continue;
5934                 }
5935
5936                 /* start card; "initialize" will load runtime ucode */
5937                 iwl3945_nic_start(priv);
5938
5939                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5940
5941                 return 0;
5942         }
5943
5944         set_bit(STATUS_EXIT_PENDING, &priv->status);
5945         __iwl3945_down(priv);
5946         clear_bit(STATUS_EXIT_PENDING, &priv->status);
5947
5948         /* tried to restart and config the device for as long as our
5949          * patience could withstand */
5950         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5951         return -EIO;
5952 }
5953
5954
5955 /*****************************************************************************
5956  *
5957  * Workqueue callbacks
5958  *
5959  *****************************************************************************/
5960
5961 static void iwl3945_bg_init_alive_start(struct work_struct *data)
5962 {
5963         struct iwl3945_priv *priv =
5964             container_of(data, struct iwl3945_priv, init_alive_start.work);
5965
5966         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5967                 return;
5968
5969         mutex_lock(&priv->mutex);
5970         iwl3945_init_alive_start(priv);
5971         mutex_unlock(&priv->mutex);
5972 }
5973
5974 static void iwl3945_bg_alive_start(struct work_struct *data)
5975 {
5976         struct iwl3945_priv *priv =
5977             container_of(data, struct iwl3945_priv, alive_start.work);
5978
5979         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5980                 return;
5981
5982         mutex_lock(&priv->mutex);
5983         iwl3945_alive_start(priv);
5984         mutex_unlock(&priv->mutex);
5985 }
5986
5987 static void iwl3945_bg_rf_kill(struct work_struct *work)
5988 {
5989         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
5990
5991         wake_up_interruptible(&priv->wait_command_queue);
5992
5993         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5994                 return;
5995
5996         mutex_lock(&priv->mutex);
5997
5998         if (!iwl3945_is_rfkill(priv)) {
5999                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6000                           "HW and/or SW RF Kill no longer active, restarting "
6001                           "device\n");
6002                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6003                         queue_work(priv->workqueue, &priv->restart);
6004         } else {
6005
6006                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6007                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6008                                           "disabled by SW switch\n");
6009                 else
6010                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6011                                     "Kill switch must be turned off for "
6012                                     "wireless networking to work.\n");
6013         }
6014
6015         mutex_unlock(&priv->mutex);
6016         iwl3945_rfkill_set_hw_state(priv);
6017 }
6018
6019 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6020
6021 static void iwl3945_bg_scan_check(struct work_struct *data)
6022 {
6023         struct iwl3945_priv *priv =
6024             container_of(data, struct iwl3945_priv, scan_check.work);
6025
6026         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6027                 return;
6028
6029         mutex_lock(&priv->mutex);
6030         if (test_bit(STATUS_SCANNING, &priv->status) ||
6031             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6032                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6033                           "Scan completion watchdog resetting adapter (%dms)\n",
6034                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6035
6036                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6037                         iwl3945_send_scan_abort(priv);
6038         }
6039         mutex_unlock(&priv->mutex);
6040 }
6041
6042 static void iwl3945_bg_request_scan(struct work_struct *data)
6043 {
6044         struct iwl3945_priv *priv =
6045             container_of(data, struct iwl3945_priv, request_scan);
6046         struct iwl3945_host_cmd cmd = {
6047                 .id = REPLY_SCAN_CMD,
6048                 .len = sizeof(struct iwl3945_scan_cmd),
6049                 .meta.flags = CMD_SIZE_HUGE,
6050         };
6051         int rc = 0;
6052         struct iwl3945_scan_cmd *scan;
6053         struct ieee80211_conf *conf = NULL;
6054         u8 n_probes = 2;
6055         enum ieee80211_band band;
6056         DECLARE_SSID_BUF(ssid);
6057
6058         conf = ieee80211_get_hw_conf(priv->hw);
6059
6060         mutex_lock(&priv->mutex);
6061
6062         if (!iwl3945_is_ready(priv)) {
6063                 IWL_WARNING("request scan called when driver not ready.\n");
6064                 goto done;
6065         }
6066
6067         /* Make sure the scan wasn't canceled before this queued work
6068          * was given the chance to run... */
6069         if (!test_bit(STATUS_SCANNING, &priv->status))
6070                 goto done;
6071
6072         /* This should never be called or scheduled if there is currently
6073          * a scan active in the hardware. */
6074         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6075                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6076                                "Ignoring second request.\n");
6077                 rc = -EIO;
6078                 goto done;
6079         }
6080
6081         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6082                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6083                 goto done;
6084         }
6085
6086         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6087                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6088                 goto done;
6089         }
6090
6091         if (iwl3945_is_rfkill(priv)) {
6092                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6093                 goto done;
6094         }
6095
6096         if (!test_bit(STATUS_READY, &priv->status)) {
6097                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6098                 goto done;
6099         }
6100
6101         if (!priv->scan_bands) {
6102                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6103                 goto done;
6104         }
6105
6106         if (!priv->scan) {
6107                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6108                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6109                 if (!priv->scan) {
6110                         rc = -ENOMEM;
6111                         goto done;
6112                 }
6113         }
6114         scan = priv->scan;
6115         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6116
6117         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6118         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6119
6120         if (iwl3945_is_associated(priv)) {
6121                 u16 interval = 0;
6122                 u32 extra;
6123                 u32 suspend_time = 100;
6124                 u32 scan_suspend_time = 100;
6125                 unsigned long flags;
6126
6127                 IWL_DEBUG_INFO("Scanning while associated...\n");
6128
6129                 spin_lock_irqsave(&priv->lock, flags);
6130                 interval = priv->beacon_int;
6131                 spin_unlock_irqrestore(&priv->lock, flags);
6132
6133                 scan->suspend_time = 0;
6134                 scan->max_out_time = cpu_to_le32(200 * 1024);
6135                 if (!interval)
6136                         interval = suspend_time;
6137                 /*
6138                  * suspend time format:
6139                  *  0-19: beacon interval in usec (time before exec.)
6140                  * 20-23: 0
6141                  * 24-31: number of beacons (suspend between channels)
6142                  */
6143
6144                 extra = (suspend_time / interval) << 24;
6145                 scan_suspend_time = 0xFF0FFFFF &
6146                     (extra | ((suspend_time % interval) * 1024));
6147
6148                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6149                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6150                                scan_suspend_time, interval);
6151         }
6152
6153         /* We should add the ability for user to lock to PASSIVE ONLY */
6154         if (priv->one_direct_scan) {
6155                 IWL_DEBUG_SCAN
6156                     ("Kicking off one direct scan for '%s'\n",
6157                      print_ssid(ssid, priv->direct_ssid,
6158                                 priv->direct_ssid_len));
6159                 scan->direct_scan[0].id = WLAN_EID_SSID;
6160                 scan->direct_scan[0].len = priv->direct_ssid_len;
6161                 memcpy(scan->direct_scan[0].ssid,
6162                        priv->direct_ssid, priv->direct_ssid_len);
6163                 n_probes++;
6164         } else
6165                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
6166
6167         /* We don't build a direct scan probe request; the uCode will do
6168          * that based on the direct_mask added to each channel entry */
6169         scan->tx_cmd.len = cpu_to_le16(
6170                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6171                         IWL_MAX_SCAN_SIZE - sizeof(*scan)));
6172         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6173         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6174         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6175
6176         /* flags + rate selection */
6177
6178         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
6179                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6180                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6181                 scan->good_CRC_th = 0;
6182                 band = IEEE80211_BAND_2GHZ;
6183         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
6184                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6185                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6186                 band = IEEE80211_BAND_5GHZ;
6187         } else {
6188                 IWL_WARNING("Invalid scan band count\n");
6189                 goto done;
6190         }
6191
6192         /* select Rx antennas */
6193         scan->flags |= iwl3945_get_antenna_flags(priv);
6194
6195         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
6196                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6197
6198         scan->channel_count =
6199                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
6200                                               n_probes,
6201                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6202
6203         if (scan->channel_count == 0) {
6204                 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
6205                 goto done;
6206         }
6207
6208         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6209             scan->channel_count * sizeof(struct iwl3945_scan_channel);
6210         cmd.data = scan;
6211         scan->len = cpu_to_le16(cmd.len);
6212
6213         set_bit(STATUS_SCAN_HW, &priv->status);
6214         rc = iwl3945_send_cmd_sync(priv, &cmd);
6215         if (rc)
6216                 goto done;
6217
6218         queue_delayed_work(priv->workqueue, &priv->scan_check,
6219                            IWL_SCAN_CHECK_WATCHDOG);
6220
6221         mutex_unlock(&priv->mutex);
6222         return;
6223
6224  done:
6225         /* can not perform scan make sure we clear scanning
6226          * bits from status so next scan request can be performed.
6227          * if we dont clear scanning status bit here all next scan
6228          * will fail
6229         */
6230         clear_bit(STATUS_SCAN_HW, &priv->status);
6231         clear_bit(STATUS_SCANNING, &priv->status);
6232
6233         /* inform mac80211 scan aborted */
6234         queue_work(priv->workqueue, &priv->scan_completed);
6235         mutex_unlock(&priv->mutex);
6236 }
6237
6238 static void iwl3945_bg_up(struct work_struct *data)
6239 {
6240         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6241
6242         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6243                 return;
6244
6245         mutex_lock(&priv->mutex);
6246         __iwl3945_up(priv);
6247         mutex_unlock(&priv->mutex);
6248         iwl3945_rfkill_set_hw_state(priv);
6249 }
6250
6251 static void iwl3945_bg_restart(struct work_struct *data)
6252 {
6253         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6254
6255         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6256                 return;
6257
6258         iwl3945_down(priv);
6259         queue_work(priv->workqueue, &priv->up);
6260 }
6261
6262 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6263 {
6264         struct iwl3945_priv *priv =
6265             container_of(data, struct iwl3945_priv, rx_replenish);
6266
6267         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6268                 return;
6269
6270         mutex_lock(&priv->mutex);
6271         iwl3945_rx_replenish(priv);
6272         mutex_unlock(&priv->mutex);
6273 }
6274
6275 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6276
6277 static void iwl3945_post_associate(struct iwl3945_priv *priv)
6278 {
6279         int rc = 0;
6280         struct ieee80211_conf *conf = NULL;
6281
6282         if (priv->iw_mode == NL80211_IFTYPE_AP) {
6283                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
6284                 return;
6285         }
6286
6287
6288         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
6289                         priv->assoc_id, priv->active_rxon.bssid_addr);
6290
6291         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6292                 return;
6293
6294         if (!priv->vif || !priv->is_open)
6295                 return;
6296
6297         iwl3945_scan_cancel_timeout(priv, 200);
6298
6299         conf = ieee80211_get_hw_conf(priv->hw);
6300
6301         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6302         iwl3945_commit_rxon(priv);
6303
6304         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6305         iwl3945_setup_rxon_timing(priv);
6306         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6307                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6308         if (rc)
6309                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6310                             "Attempting to continue.\n");
6311
6312         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6313
6314         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6315
6316         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6317                         priv->assoc_id, priv->beacon_int);
6318
6319         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6320                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6321         else
6322                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6323
6324         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6325                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6326                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6327                 else
6328                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6329
6330                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6331                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6332
6333         }
6334
6335         iwl3945_commit_rxon(priv);
6336
6337         switch (priv->iw_mode) {
6338         case NL80211_IFTYPE_STATION:
6339                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6340                 break;
6341
6342         case NL80211_IFTYPE_ADHOC:
6343
6344                 priv->assoc_id = 1;
6345                 iwl3945_add_station(priv, priv->bssid, 0, 0);
6346                 iwl3945_sync_sta(priv, IWL_STA_ID,
6347                                  (priv->band == IEEE80211_BAND_5GHZ) ?
6348                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6349                                  CMD_ASYNC);
6350                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6351                 iwl3945_send_beacon_cmd(priv);
6352
6353                 break;
6354
6355         default:
6356                  IWL_ERROR("%s Should not be called in %d mode\n",
6357                            __func__, priv->iw_mode);
6358                 break;
6359         }
6360
6361         iwl3945_activate_qos(priv, 0);
6362
6363         /* we have just associated, don't start scan too early */
6364         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6365 }
6366
6367 static void iwl3945_bg_abort_scan(struct work_struct *work)
6368 {
6369         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6370
6371         if (!iwl3945_is_ready(priv))
6372                 return;
6373
6374         mutex_lock(&priv->mutex);
6375
6376         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6377         iwl3945_send_scan_abort(priv);
6378
6379         mutex_unlock(&priv->mutex);
6380 }
6381
6382 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
6383
6384 static void iwl3945_bg_scan_completed(struct work_struct *work)
6385 {
6386         struct iwl3945_priv *priv =
6387             container_of(work, struct iwl3945_priv, scan_completed);
6388
6389         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6390
6391         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6392                 return;
6393
6394         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6395                 iwl3945_mac_config(priv->hw, 0);
6396
6397         ieee80211_scan_completed(priv->hw);
6398
6399         /* Since setting the TXPOWER may have been deferred while
6400          * performing the scan, fire one off */
6401         mutex_lock(&priv->mutex);
6402         iwl3945_hw_reg_send_txpower(priv);
6403         mutex_unlock(&priv->mutex);
6404 }
6405
6406 /*****************************************************************************
6407  *
6408  * mac80211 entry point functions
6409  *
6410  *****************************************************************************/
6411
6412 #define UCODE_READY_TIMEOUT     (2 * HZ)
6413
6414 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6415 {
6416         struct iwl3945_priv *priv = hw->priv;
6417         int ret;
6418
6419         IWL_DEBUG_MAC80211("enter\n");
6420
6421         if (pci_enable_device(priv->pci_dev)) {
6422                 IWL_ERROR("Fail to pci_enable_device\n");
6423                 return -ENODEV;
6424         }
6425         pci_restore_state(priv->pci_dev);
6426         pci_enable_msi(priv->pci_dev);
6427
6428         ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6429                           DRV_NAME, priv);
6430         if (ret) {
6431                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6432                 goto out_disable_msi;
6433         }
6434
6435         /* we should be verifying the device is ready to be opened */
6436         mutex_lock(&priv->mutex);
6437
6438         memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6439         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6440          * ucode filename and max sizes are card-specific. */
6441
6442         if (!priv->ucode_code.len) {
6443                 ret = iwl3945_read_ucode(priv);
6444                 if (ret) {
6445                         IWL_ERROR("Could not read microcode: %d\n", ret);
6446                         mutex_unlock(&priv->mutex);
6447                         goto out_release_irq;
6448                 }
6449         }
6450
6451         ret = __iwl3945_up(priv);
6452
6453         mutex_unlock(&priv->mutex);
6454
6455         iwl3945_rfkill_set_hw_state(priv);
6456
6457         if (ret)
6458                 goto out_release_irq;
6459
6460         IWL_DEBUG_INFO("Start UP work.\n");
6461
6462         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6463                 return 0;
6464
6465         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6466          * mac80211 will not be run successfully. */
6467         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6468                         test_bit(STATUS_READY, &priv->status),
6469                         UCODE_READY_TIMEOUT);
6470         if (!ret) {
6471                 if (!test_bit(STATUS_READY, &priv->status)) {
6472                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6473                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6474                         ret = -ETIMEDOUT;
6475                         goto out_release_irq;
6476                 }
6477         }
6478
6479         priv->is_open = 1;
6480         IWL_DEBUG_MAC80211("leave\n");
6481         return 0;
6482
6483 out_release_irq:
6484         free_irq(priv->pci_dev->irq, priv);
6485 out_disable_msi:
6486         pci_disable_msi(priv->pci_dev);
6487         pci_disable_device(priv->pci_dev);
6488         priv->is_open = 0;
6489         IWL_DEBUG_MAC80211("leave - failed\n");
6490         return ret;
6491 }
6492
6493 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6494 {
6495         struct iwl3945_priv *priv = hw->priv;
6496
6497         IWL_DEBUG_MAC80211("enter\n");
6498
6499         if (!priv->is_open) {
6500                 IWL_DEBUG_MAC80211("leave - skip\n");
6501                 return;
6502         }
6503
6504         priv->is_open = 0;
6505
6506         if (iwl3945_is_ready_rf(priv)) {
6507                 /* stop mac, cancel any scan request and clear
6508                  * RXON_FILTER_ASSOC_MSK BIT
6509                  */
6510                 mutex_lock(&priv->mutex);
6511                 iwl3945_scan_cancel_timeout(priv, 100);
6512                 mutex_unlock(&priv->mutex);
6513         }
6514
6515         iwl3945_down(priv);
6516
6517         flush_workqueue(priv->workqueue);
6518         free_irq(priv->pci_dev->irq, priv);
6519         pci_disable_msi(priv->pci_dev);
6520         pci_save_state(priv->pci_dev);
6521         pci_disable_device(priv->pci_dev);
6522
6523         IWL_DEBUG_MAC80211("leave\n");
6524 }
6525
6526 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
6527 {
6528         struct iwl3945_priv *priv = hw->priv;
6529
6530         IWL_DEBUG_MAC80211("enter\n");
6531
6532         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6533                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
6534
6535         if (iwl3945_tx_skb(priv, skb))
6536                 dev_kfree_skb_any(skb);
6537
6538         IWL_DEBUG_MAC80211("leave\n");
6539         return NETDEV_TX_OK;
6540 }
6541
6542 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6543                                  struct ieee80211_if_init_conf *conf)
6544 {
6545         struct iwl3945_priv *priv = hw->priv;
6546         unsigned long flags;
6547
6548         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6549
6550         if (priv->vif) {
6551                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6552                 return -EOPNOTSUPP;
6553         }
6554
6555         spin_lock_irqsave(&priv->lock, flags);
6556         priv->vif = conf->vif;
6557         priv->iw_mode = conf->type;
6558
6559         spin_unlock_irqrestore(&priv->lock, flags);
6560
6561         mutex_lock(&priv->mutex);
6562
6563         if (conf->mac_addr) {
6564                 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
6565                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6566         }
6567
6568         if (iwl3945_is_ready(priv))
6569                 iwl3945_set_mode(priv, conf->type);
6570
6571         mutex_unlock(&priv->mutex);
6572
6573         IWL_DEBUG_MAC80211("leave\n");
6574         return 0;
6575 }
6576
6577 /**
6578  * iwl3945_mac_config - mac80211 config callback
6579  *
6580  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6581  * be set inappropriately and the driver currently sets the hardware up to
6582  * use it whenever needed.
6583  */
6584 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
6585 {
6586         struct iwl3945_priv *priv = hw->priv;
6587         const struct iwl3945_channel_info *ch_info;
6588         struct ieee80211_conf *conf = &hw->conf;
6589         unsigned long flags;
6590         int ret = 0;
6591
6592         mutex_lock(&priv->mutex);
6593         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6594
6595         if (!iwl3945_is_ready(priv)) {
6596                 IWL_DEBUG_MAC80211("leave - not ready\n");
6597                 ret = -EIO;
6598                 goto out;
6599         }
6600
6601         if (unlikely(!iwl3945_param_disable_hw_scan &&
6602                      test_bit(STATUS_SCANNING, &priv->status))) {
6603                 IWL_DEBUG_MAC80211("leave - scanning\n");
6604                 set_bit(STATUS_CONF_PENDING, &priv->status);
6605                 mutex_unlock(&priv->mutex);
6606                 return 0;
6607         }
6608
6609         spin_lock_irqsave(&priv->lock, flags);
6610
6611         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6612                                            conf->channel->hw_value);
6613         if (!is_channel_valid(ch_info)) {
6614                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6615                                conf->channel->hw_value, conf->channel->band);
6616                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6617                 spin_unlock_irqrestore(&priv->lock, flags);
6618                 ret = -EINVAL;
6619                 goto out;
6620         }
6621
6622         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6623
6624         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6625
6626         /* The list of supported rates and rate mask can be different
6627          * for each phymode; since the phymode may have changed, reset
6628          * the rate mask to what mac80211 lists */
6629         iwl3945_set_rate(priv);
6630
6631         spin_unlock_irqrestore(&priv->lock, flags);
6632
6633 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6634         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6635                 iwl3945_hw_channel_switch(priv, conf->channel);
6636                 goto out;
6637         }
6638 #endif
6639
6640         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6641
6642         if (!conf->radio_enabled) {
6643                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6644                 goto out;
6645         }
6646
6647         if (iwl3945_is_rfkill(priv)) {
6648                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6649                 ret = -EIO;
6650                 goto out;
6651         }
6652
6653         iwl3945_set_rate(priv);
6654
6655         if (memcmp(&priv->active_rxon,
6656                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6657                 iwl3945_commit_rxon(priv);
6658         else
6659                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6660
6661         IWL_DEBUG_MAC80211("leave\n");
6662
6663 out:
6664         clear_bit(STATUS_CONF_PENDING, &priv->status);
6665         mutex_unlock(&priv->mutex);
6666         return ret;
6667 }
6668
6669 static void iwl3945_config_ap(struct iwl3945_priv *priv)
6670 {
6671         int rc = 0;
6672
6673         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6674                 return;
6675
6676         /* The following should be done only at AP bring up */
6677         if (!(iwl3945_is_associated(priv))) {
6678
6679                 /* RXON - unassoc (to set timing command) */
6680                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6681                 iwl3945_commit_rxon(priv);
6682
6683                 /* RXON Timing */
6684                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6685                 iwl3945_setup_rxon_timing(priv);
6686                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6687                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6688                 if (rc)
6689                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6690                                         "Attempting to continue.\n");
6691
6692                 /* FIXME: what should be the assoc_id for AP? */
6693                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6694                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6695                         priv->staging_rxon.flags |=
6696                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6697                 else
6698                         priv->staging_rxon.flags &=
6699                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6700
6701                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6702                         if (priv->assoc_capability &
6703                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6704                                 priv->staging_rxon.flags |=
6705                                         RXON_FLG_SHORT_SLOT_MSK;
6706                         else
6707                                 priv->staging_rxon.flags &=
6708                                         ~RXON_FLG_SHORT_SLOT_MSK;
6709
6710                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6711                                 priv->staging_rxon.flags &=
6712                                         ~RXON_FLG_SHORT_SLOT_MSK;
6713                 }
6714                 /* restore RXON assoc */
6715                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6716                 iwl3945_commit_rxon(priv);
6717                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6718         }
6719         iwl3945_send_beacon_cmd(priv);
6720
6721         /* FIXME - we need to add code here to detect a totally new
6722          * configuration, reset the AP, unassoc, rxon timing, assoc,
6723          * clear sta table, add BCAST sta... */
6724 }
6725
6726 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6727                                         struct ieee80211_vif *vif,
6728                                     struct ieee80211_if_conf *conf)
6729 {
6730         struct iwl3945_priv *priv = hw->priv;
6731         int rc;
6732
6733         if (conf == NULL)
6734                 return -EIO;
6735
6736         if (priv->vif != vif) {
6737                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6738                 return 0;
6739         }
6740
6741         /* handle this temporarily here */
6742         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
6743             conf->changed & IEEE80211_IFCC_BEACON) {
6744                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
6745                 if (!beacon)
6746                         return -ENOMEM;
6747                 mutex_lock(&priv->mutex);
6748                 rc = iwl3945_mac_beacon_update(hw, beacon);
6749                 mutex_unlock(&priv->mutex);
6750                 if (rc)
6751                         return rc;
6752         }
6753
6754         if (!iwl3945_is_alive(priv))
6755                 return -EAGAIN;
6756
6757         mutex_lock(&priv->mutex);
6758
6759         if (conf->bssid)
6760                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
6761
6762 /*
6763  * very dubious code was here; the probe filtering flag is never set:
6764  *
6765         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6766             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6767  */
6768
6769         if (priv->iw_mode == NL80211_IFTYPE_AP) {
6770                 if (!conf->bssid) {
6771                         conf->bssid = priv->mac_addr;
6772                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6773                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
6774                                            conf->bssid);
6775                 }
6776                 if (priv->ibss_beacon)
6777                         dev_kfree_skb(priv->ibss_beacon);
6778
6779                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
6780         }
6781
6782         if (iwl3945_is_rfkill(priv))
6783                 goto done;
6784
6785         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6786             !is_multicast_ether_addr(conf->bssid)) {
6787                 /* If there is currently a HW scan going on in the background
6788                  * then we need to cancel it else the RXON below will fail. */
6789                 if (iwl3945_scan_cancel_timeout(priv, 100)) {
6790                         IWL_WARNING("Aborted scan still in progress "
6791                                     "after 100ms\n");
6792                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6793                         mutex_unlock(&priv->mutex);
6794                         return -EAGAIN;
6795                 }
6796                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6797
6798                 /* TODO: Audit driver for usage of these members and see
6799                  * if mac80211 deprecates them (priv->bssid looks like it
6800                  * shouldn't be there, but I haven't scanned the IBSS code
6801                  * to verify) - jpk */
6802                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6803
6804                 if (priv->iw_mode == NL80211_IFTYPE_AP)
6805                         iwl3945_config_ap(priv);
6806                 else {
6807                         rc = iwl3945_commit_rxon(priv);
6808                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
6809                                 iwl3945_add_station(priv,
6810                                         priv->active_rxon.bssid_addr, 1, 0);
6811                 }
6812
6813         } else {
6814                 iwl3945_scan_cancel_timeout(priv, 100);
6815                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6816                 iwl3945_commit_rxon(priv);
6817         }
6818
6819  done:
6820         IWL_DEBUG_MAC80211("leave\n");
6821         mutex_unlock(&priv->mutex);
6822
6823         return 0;
6824 }
6825
6826 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6827                                  unsigned int changed_flags,
6828                                  unsigned int *total_flags,
6829                                  int mc_count, struct dev_addr_list *mc_list)
6830 {
6831         struct iwl3945_priv *priv = hw->priv;
6832         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
6833
6834         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
6835                         changed_flags, *total_flags);
6836
6837         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
6838                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
6839                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
6840                 else
6841                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
6842         }
6843         if (changed_flags & FIF_ALLMULTI) {
6844                 if (*total_flags & FIF_ALLMULTI)
6845                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
6846                 else
6847                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
6848         }
6849         if (changed_flags & FIF_CONTROL) {
6850                 if (*total_flags & FIF_CONTROL)
6851                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
6852                 else
6853                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
6854         }
6855         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
6856                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
6857                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
6858                 else
6859                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
6860         }
6861
6862         /* We avoid iwl_commit_rxon here to commit the new filter flags
6863          * since mac80211 will call ieee80211_hw_config immediately.
6864          * (mc_list is not supported at this time). Otherwise, we need to
6865          * queue a background iwl_commit_rxon work.
6866          */
6867
6868         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
6869                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6870 }
6871
6872 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
6873                                      struct ieee80211_if_init_conf *conf)
6874 {
6875         struct iwl3945_priv *priv = hw->priv;
6876
6877         IWL_DEBUG_MAC80211("enter\n");
6878
6879         mutex_lock(&priv->mutex);
6880
6881         if (iwl3945_is_ready_rf(priv)) {
6882                 iwl3945_scan_cancel_timeout(priv, 100);
6883                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6884                 iwl3945_commit_rxon(priv);
6885         }
6886         if (priv->vif == conf->vif) {
6887                 priv->vif = NULL;
6888                 memset(priv->bssid, 0, ETH_ALEN);
6889         }
6890         mutex_unlock(&priv->mutex);
6891
6892         IWL_DEBUG_MAC80211("leave\n");
6893 }
6894
6895 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6896
6897 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
6898                                      struct ieee80211_vif *vif,
6899                                      struct ieee80211_bss_conf *bss_conf,
6900                                      u32 changes)
6901 {
6902         struct iwl3945_priv *priv = hw->priv;
6903
6904         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6905
6906         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6907                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6908                                    bss_conf->use_short_preamble);
6909                 if (bss_conf->use_short_preamble)
6910                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6911                 else
6912                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6913         }
6914
6915         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6916                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6917                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6918                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6919                 else
6920                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6921         }
6922
6923         if (changes & BSS_CHANGED_ASSOC) {
6924                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6925                 /* This should never happen as this function should
6926                  * never be called from interrupt context. */
6927                 if (WARN_ON_ONCE(in_interrupt()))
6928                         return;
6929                 if (bss_conf->assoc) {
6930                         priv->assoc_id = bss_conf->aid;
6931                         priv->beacon_int = bss_conf->beacon_int;
6932                         priv->timestamp = bss_conf->timestamp;
6933                         priv->assoc_capability = bss_conf->assoc_capability;
6934                         priv->next_scan_jiffies = jiffies +
6935                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6936                         mutex_lock(&priv->mutex);
6937                         iwl3945_post_associate(priv);
6938                         mutex_unlock(&priv->mutex);
6939                 } else {
6940                         priv->assoc_id = 0;
6941                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6942                 }
6943         } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
6944                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6945                         iwl3945_send_rxon_assoc(priv);
6946         }
6947
6948 }
6949
6950 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6951 {
6952         int rc = 0;
6953         unsigned long flags;
6954         struct iwl3945_priv *priv = hw->priv;
6955         DECLARE_SSID_BUF(ssid_buf);
6956
6957         IWL_DEBUG_MAC80211("enter\n");
6958
6959         mutex_lock(&priv->mutex);
6960         spin_lock_irqsave(&priv->lock, flags);
6961
6962         if (!iwl3945_is_ready_rf(priv)) {
6963                 rc = -EIO;
6964                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6965                 goto out_unlock;
6966         }
6967
6968         /* we don't schedule scan within next_scan_jiffies period */
6969         if (priv->next_scan_jiffies &&
6970                         time_after(priv->next_scan_jiffies, jiffies)) {
6971                 rc = -EAGAIN;
6972                 goto out_unlock;
6973         }
6974         /* if we just finished scan ask for delay for a broadcast scan */
6975         if ((len == 0) && priv->last_scan_jiffies &&
6976             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
6977                        jiffies)) {
6978                 rc = -EAGAIN;
6979                 goto out_unlock;
6980         }
6981         if (len) {
6982                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6983                                print_ssid(ssid_buf, ssid, len), (int)len);
6984
6985                 priv->one_direct_scan = 1;
6986                 priv->direct_ssid_len = (u8)
6987                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6988                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6989         } else
6990                 priv->one_direct_scan = 0;
6991
6992         rc = iwl3945_scan_initiate(priv);
6993
6994         IWL_DEBUG_MAC80211("leave\n");
6995
6996 out_unlock:
6997         spin_unlock_irqrestore(&priv->lock, flags);
6998         mutex_unlock(&priv->mutex);
6999
7000         return rc;
7001 }
7002
7003 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7004                            const u8 *local_addr, const u8 *addr,
7005                            struct ieee80211_key_conf *key)
7006 {
7007         struct iwl3945_priv *priv = hw->priv;
7008         int rc = 0;
7009         u8 sta_id;
7010
7011         IWL_DEBUG_MAC80211("enter\n");
7012
7013         if (!iwl3945_param_hwcrypto) {
7014                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7015                 return -EOPNOTSUPP;
7016         }
7017
7018         if (is_zero_ether_addr(addr))
7019                 /* only support pairwise keys */
7020                 return -EOPNOTSUPP;
7021
7022         sta_id = iwl3945_hw_find_station(priv, addr);
7023         if (sta_id == IWL_INVALID_STATION) {
7024                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
7025                                    addr);
7026                 return -EINVAL;
7027         }
7028
7029         mutex_lock(&priv->mutex);
7030
7031         iwl3945_scan_cancel_timeout(priv, 100);
7032
7033         switch (cmd) {
7034         case  SET_KEY:
7035                 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7036                 if (!rc) {
7037                         iwl3945_set_rxon_hwcrypto(priv, 1);
7038                         iwl3945_commit_rxon(priv);
7039                         key->hw_key_idx = sta_id;
7040                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7041                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7042                 }
7043                 break;
7044         case DISABLE_KEY:
7045                 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7046                 if (!rc) {
7047                         iwl3945_set_rxon_hwcrypto(priv, 0);
7048                         iwl3945_commit_rxon(priv);
7049                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7050                 }
7051                 break;
7052         default:
7053                 rc = -EINVAL;
7054         }
7055
7056         IWL_DEBUG_MAC80211("leave\n");
7057         mutex_unlock(&priv->mutex);
7058
7059         return rc;
7060 }
7061
7062 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
7063                            const struct ieee80211_tx_queue_params *params)
7064 {
7065         struct iwl3945_priv *priv = hw->priv;
7066         unsigned long flags;
7067         int q;
7068
7069         IWL_DEBUG_MAC80211("enter\n");
7070
7071         if (!iwl3945_is_ready_rf(priv)) {
7072                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7073                 return -EIO;
7074         }
7075
7076         if (queue >= AC_NUM) {
7077                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7078                 return 0;
7079         }
7080
7081         q = AC_NUM - 1 - queue;
7082
7083         spin_lock_irqsave(&priv->lock, flags);
7084
7085         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7086         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7087         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7088         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7089                         cpu_to_le16((params->txop * 32));
7090
7091         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7092         priv->qos_data.qos_active = 1;
7093
7094         spin_unlock_irqrestore(&priv->lock, flags);
7095
7096         mutex_lock(&priv->mutex);
7097         if (priv->iw_mode == NL80211_IFTYPE_AP)
7098                 iwl3945_activate_qos(priv, 1);
7099         else if (priv->assoc_id && iwl3945_is_associated(priv))
7100                 iwl3945_activate_qos(priv, 0);
7101
7102         mutex_unlock(&priv->mutex);
7103
7104         IWL_DEBUG_MAC80211("leave\n");
7105         return 0;
7106 }
7107
7108 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7109                                 struct ieee80211_tx_queue_stats *stats)
7110 {
7111         struct iwl3945_priv *priv = hw->priv;
7112         int i, avail;
7113         struct iwl3945_tx_queue *txq;
7114         struct iwl3945_queue *q;
7115         unsigned long flags;
7116
7117         IWL_DEBUG_MAC80211("enter\n");
7118
7119         if (!iwl3945_is_ready_rf(priv)) {
7120                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7121                 return -EIO;
7122         }
7123
7124         spin_lock_irqsave(&priv->lock, flags);
7125
7126         for (i = 0; i < AC_NUM; i++) {
7127                 txq = &priv->txq[i];
7128                 q = &txq->q;
7129                 avail = iwl3945_queue_space(q);
7130
7131                 stats[i].len = q->n_window - avail;
7132                 stats[i].limit = q->n_window - q->high_mark;
7133                 stats[i].count = q->n_window;
7134
7135         }
7136         spin_unlock_irqrestore(&priv->lock, flags);
7137
7138         IWL_DEBUG_MAC80211("leave\n");
7139
7140         return 0;
7141 }
7142
7143 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7144                              struct ieee80211_low_level_stats *stats)
7145 {
7146         return 0;
7147 }
7148
7149 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7150 {
7151         struct iwl3945_priv *priv = hw->priv;
7152         unsigned long flags;
7153
7154         mutex_lock(&priv->mutex);
7155         IWL_DEBUG_MAC80211("enter\n");
7156
7157         iwl3945_reset_qos(priv);
7158
7159         spin_lock_irqsave(&priv->lock, flags);
7160         priv->assoc_id = 0;
7161         priv->assoc_capability = 0;
7162         priv->call_post_assoc_from_beacon = 0;
7163
7164         /* new association get rid of ibss beacon skb */
7165         if (priv->ibss_beacon)
7166                 dev_kfree_skb(priv->ibss_beacon);
7167
7168         priv->ibss_beacon = NULL;
7169
7170         priv->beacon_int = priv->hw->conf.beacon_int;
7171         priv->timestamp = 0;
7172         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
7173                 priv->beacon_int = 0;
7174
7175         spin_unlock_irqrestore(&priv->lock, flags);
7176
7177         if (!iwl3945_is_ready_rf(priv)) {
7178                 IWL_DEBUG_MAC80211("leave - not ready\n");
7179                 mutex_unlock(&priv->mutex);
7180                 return;
7181         }
7182
7183         /* we are restarting association process
7184          * clear RXON_FILTER_ASSOC_MSK bit
7185         */
7186         if (priv->iw_mode != NL80211_IFTYPE_AP) {
7187                 iwl3945_scan_cancel_timeout(priv, 100);
7188                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7189                 iwl3945_commit_rxon(priv);
7190         }
7191
7192         /* Per mac80211.h: This is only used in IBSS mode... */
7193         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7194
7195                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7196                 mutex_unlock(&priv->mutex);
7197                 return;
7198         }
7199
7200         iwl3945_set_rate(priv);
7201
7202         mutex_unlock(&priv->mutex);
7203
7204         IWL_DEBUG_MAC80211("leave\n");
7205
7206 }
7207
7208 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
7209 {
7210         struct iwl3945_priv *priv = hw->priv;
7211         unsigned long flags;
7212
7213         IWL_DEBUG_MAC80211("enter\n");
7214
7215         if (!iwl3945_is_ready_rf(priv)) {
7216                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7217                 return -EIO;
7218         }
7219
7220         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7221                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7222                 return -EIO;
7223         }
7224
7225         spin_lock_irqsave(&priv->lock, flags);
7226
7227         if (priv->ibss_beacon)
7228                 dev_kfree_skb(priv->ibss_beacon);
7229
7230         priv->ibss_beacon = skb;
7231
7232         priv->assoc_id = 0;
7233
7234         IWL_DEBUG_MAC80211("leave\n");
7235         spin_unlock_irqrestore(&priv->lock, flags);
7236
7237         iwl3945_reset_qos(priv);
7238
7239         iwl3945_post_associate(priv);
7240
7241
7242         return 0;
7243 }
7244
7245 /*****************************************************************************
7246  *
7247  * sysfs attributes
7248  *
7249  *****************************************************************************/
7250
7251 #ifdef CONFIG_IWL3945_DEBUG
7252
7253 /*
7254  * The following adds a new attribute to the sysfs representation
7255  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7256  * used for controlling the debug level.
7257  *
7258  * See the level definitions in iwl for details.
7259  */
7260 static ssize_t show_debug_level(struct device *d,
7261                                 struct device_attribute *attr, char *buf)
7262 {
7263         struct iwl3945_priv *priv = d->driver_data;
7264
7265         return sprintf(buf, "0x%08X\n", priv->debug_level);
7266 }
7267 static ssize_t store_debug_level(struct device *d,
7268                                 struct device_attribute *attr,
7269                                  const char *buf, size_t count)
7270 {
7271         struct iwl3945_priv *priv = d->driver_data;
7272         unsigned long val;
7273         int ret;
7274
7275         ret = strict_strtoul(buf, 0, &val);
7276         if (ret)
7277                 printk(KERN_INFO DRV_NAME
7278                        ": %s is not in hex or decimal form.\n", buf);
7279         else
7280                 priv->debug_level = val;
7281
7282         return strnlen(buf, count);
7283 }
7284
7285 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
7286                         show_debug_level, store_debug_level);
7287
7288 #endif /* CONFIG_IWL3945_DEBUG */
7289
7290 static ssize_t show_temperature(struct device *d,
7291                                 struct device_attribute *attr, char *buf)
7292 {
7293         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7294
7295         if (!iwl3945_is_alive(priv))
7296                 return -EAGAIN;
7297
7298         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7299 }
7300
7301 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7302
7303 static ssize_t show_tx_power(struct device *d,
7304                              struct device_attribute *attr, char *buf)
7305 {
7306         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7307         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7308 }
7309
7310 static ssize_t store_tx_power(struct device *d,
7311                               struct device_attribute *attr,
7312                               const char *buf, size_t count)
7313 {
7314         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7315         char *p = (char *)buf;
7316         u32 val;
7317
7318         val = simple_strtoul(p, &p, 10);
7319         if (p == buf)
7320                 printk(KERN_INFO DRV_NAME
7321                        ": %s is not in decimal form.\n", buf);
7322         else
7323                 iwl3945_hw_reg_set_txpower(priv, val);
7324
7325         return count;
7326 }
7327
7328 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7329
7330 static ssize_t show_flags(struct device *d,
7331                           struct device_attribute *attr, char *buf)
7332 {
7333         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7334
7335         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7336 }
7337
7338 static ssize_t store_flags(struct device *d,
7339                            struct device_attribute *attr,
7340                            const char *buf, size_t count)
7341 {
7342         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7343         u32 flags = simple_strtoul(buf, NULL, 0);
7344
7345         mutex_lock(&priv->mutex);
7346         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7347                 /* Cancel any currently running scans... */
7348                 if (iwl3945_scan_cancel_timeout(priv, 100))
7349                         IWL_WARNING("Could not cancel scan.\n");
7350                 else {
7351                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7352                                        flags);
7353                         priv->staging_rxon.flags = cpu_to_le32(flags);
7354                         iwl3945_commit_rxon(priv);
7355                 }
7356         }
7357         mutex_unlock(&priv->mutex);
7358
7359         return count;
7360 }
7361
7362 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7363
7364 static ssize_t show_filter_flags(struct device *d,
7365                                  struct device_attribute *attr, char *buf)
7366 {
7367         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7368
7369         return sprintf(buf, "0x%04X\n",
7370                 le32_to_cpu(priv->active_rxon.filter_flags));
7371 }
7372
7373 static ssize_t store_filter_flags(struct device *d,
7374                                   struct device_attribute *attr,
7375                                   const char *buf, size_t count)
7376 {
7377         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7378         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7379
7380         mutex_lock(&priv->mutex);
7381         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7382                 /* Cancel any currently running scans... */
7383                 if (iwl3945_scan_cancel_timeout(priv, 100))
7384                         IWL_WARNING("Could not cancel scan.\n");
7385                 else {
7386                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7387                                        "0x%04X\n", filter_flags);
7388                         priv->staging_rxon.filter_flags =
7389                                 cpu_to_le32(filter_flags);
7390                         iwl3945_commit_rxon(priv);
7391                 }
7392         }
7393         mutex_unlock(&priv->mutex);
7394
7395         return count;
7396 }
7397
7398 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7399                    store_filter_flags);
7400
7401 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7402
7403 static ssize_t show_measurement(struct device *d,
7404                                 struct device_attribute *attr, char *buf)
7405 {
7406         struct iwl3945_priv *priv = dev_get_drvdata(d);
7407         struct iwl_spectrum_notification measure_report;
7408         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7409         u8 *data = (u8 *)&measure_report;
7410         unsigned long flags;
7411
7412         spin_lock_irqsave(&priv->lock, flags);
7413         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7414                 spin_unlock_irqrestore(&priv->lock, flags);
7415                 return 0;
7416         }
7417         memcpy(&measure_report, &priv->measure_report, size);
7418         priv->measurement_status = 0;
7419         spin_unlock_irqrestore(&priv->lock, flags);
7420
7421         while (size && (PAGE_SIZE - len)) {
7422                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7423                                    PAGE_SIZE - len, 1);
7424                 len = strlen(buf);
7425                 if (PAGE_SIZE - len)
7426                         buf[len++] = '\n';
7427
7428                 ofs += 16;
7429                 size -= min(size, 16U);
7430         }
7431
7432         return len;
7433 }
7434
7435 static ssize_t store_measurement(struct device *d,
7436                                  struct device_attribute *attr,
7437                                  const char *buf, size_t count)
7438 {
7439         struct iwl3945_priv *priv = dev_get_drvdata(d);
7440         struct ieee80211_measurement_params params = {
7441                 .channel = le16_to_cpu(priv->active_rxon.channel),
7442                 .start_time = cpu_to_le64(priv->last_tsf),
7443                 .duration = cpu_to_le16(1),
7444         };
7445         u8 type = IWL_MEASURE_BASIC;
7446         u8 buffer[32];
7447         u8 channel;
7448
7449         if (count) {
7450                 char *p = buffer;
7451                 strncpy(buffer, buf, min(sizeof(buffer), count));
7452                 channel = simple_strtoul(p, NULL, 0);
7453                 if (channel)
7454                         params.channel = channel;
7455
7456                 p = buffer;
7457                 while (*p && *p != ' ')
7458                         p++;
7459                 if (*p)
7460                         type = simple_strtoul(p + 1, NULL, 0);
7461         }
7462
7463         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7464                        "channel %d (for '%s')\n", type, params.channel, buf);
7465         iwl3945_get_measurement(priv, &params, type);
7466
7467         return count;
7468 }
7469
7470 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7471                    show_measurement, store_measurement);
7472 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7473
7474 static ssize_t store_retry_rate(struct device *d,
7475                                 struct device_attribute *attr,
7476                                 const char *buf, size_t count)
7477 {
7478         struct iwl3945_priv *priv = dev_get_drvdata(d);
7479
7480         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7481         if (priv->retry_rate <= 0)
7482                 priv->retry_rate = 1;
7483
7484         return count;
7485 }
7486
7487 static ssize_t show_retry_rate(struct device *d,
7488                                struct device_attribute *attr, char *buf)
7489 {
7490         struct iwl3945_priv *priv = dev_get_drvdata(d);
7491         return sprintf(buf, "%d", priv->retry_rate);
7492 }
7493
7494 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7495                    store_retry_rate);
7496
7497 static ssize_t store_power_level(struct device *d,
7498                                  struct device_attribute *attr,
7499                                  const char *buf, size_t count)
7500 {
7501         struct iwl3945_priv *priv = dev_get_drvdata(d);
7502         int rc;
7503         int mode;
7504
7505         mode = simple_strtoul(buf, NULL, 0);
7506         mutex_lock(&priv->mutex);
7507
7508         if (!iwl3945_is_ready(priv)) {
7509                 rc = -EAGAIN;
7510                 goto out;
7511         }
7512
7513         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7514                 mode = IWL_POWER_AC;
7515         else
7516                 mode |= IWL_POWER_ENABLED;
7517
7518         if (mode != priv->power_mode) {
7519                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7520                 if (rc) {
7521                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7522                         goto out;
7523                 }
7524                 priv->power_mode = mode;
7525         }
7526
7527         rc = count;
7528
7529  out:
7530         mutex_unlock(&priv->mutex);
7531         return rc;
7532 }
7533
7534 #define MAX_WX_STRING 80
7535
7536 /* Values are in microsecond */
7537 static const s32 timeout_duration[] = {
7538         350000,
7539         250000,
7540         75000,
7541         37000,
7542         25000,
7543 };
7544 static const s32 period_duration[] = {
7545         400000,
7546         700000,
7547         1000000,
7548         1000000,
7549         1000000
7550 };
7551
7552 static ssize_t show_power_level(struct device *d,
7553                                 struct device_attribute *attr, char *buf)
7554 {
7555         struct iwl3945_priv *priv = dev_get_drvdata(d);
7556         int level = IWL_POWER_LEVEL(priv->power_mode);
7557         char *p = buf;
7558
7559         p += sprintf(p, "%d ", level);
7560         switch (level) {
7561         case IWL_POWER_MODE_CAM:
7562         case IWL_POWER_AC:
7563                 p += sprintf(p, "(AC)");
7564                 break;
7565         case IWL_POWER_BATTERY:
7566                 p += sprintf(p, "(BATTERY)");
7567                 break;
7568         default:
7569                 p += sprintf(p,
7570                              "(Timeout %dms, Period %dms)",
7571                              timeout_duration[level - 1] / 1000,
7572                              period_duration[level - 1] / 1000);
7573         }
7574
7575         if (!(priv->power_mode & IWL_POWER_ENABLED))
7576                 p += sprintf(p, " OFF\n");
7577         else
7578                 p += sprintf(p, " \n");
7579
7580         return p - buf + 1;
7581
7582 }
7583
7584 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7585                    store_power_level);
7586
7587 static ssize_t show_channels(struct device *d,
7588                              struct device_attribute *attr, char *buf)
7589 {
7590         /* all this shit doesn't belong into sysfs anyway */
7591         return 0;
7592 }
7593
7594 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7595
7596 static ssize_t show_statistics(struct device *d,
7597                                struct device_attribute *attr, char *buf)
7598 {
7599         struct iwl3945_priv *priv = dev_get_drvdata(d);
7600         u32 size = sizeof(struct iwl3945_notif_statistics);
7601         u32 len = 0, ofs = 0;
7602         u8 *data = (u8 *)&priv->statistics;
7603         int rc = 0;
7604
7605         if (!iwl3945_is_alive(priv))
7606                 return -EAGAIN;
7607
7608         mutex_lock(&priv->mutex);
7609         rc = iwl3945_send_statistics_request(priv);
7610         mutex_unlock(&priv->mutex);
7611
7612         if (rc) {
7613                 len = sprintf(buf,
7614                               "Error sending statistics request: 0x%08X\n", rc);
7615                 return len;
7616         }
7617
7618         while (size && (PAGE_SIZE - len)) {
7619                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7620                                    PAGE_SIZE - len, 1);
7621                 len = strlen(buf);
7622                 if (PAGE_SIZE - len)
7623                         buf[len++] = '\n';
7624
7625                 ofs += 16;
7626                 size -= min(size, 16U);
7627         }
7628
7629         return len;
7630 }
7631
7632 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7633
7634 static ssize_t show_antenna(struct device *d,
7635                             struct device_attribute *attr, char *buf)
7636 {
7637         struct iwl3945_priv *priv = dev_get_drvdata(d);
7638
7639         if (!iwl3945_is_alive(priv))
7640                 return -EAGAIN;
7641
7642         return sprintf(buf, "%d\n", priv->antenna);
7643 }
7644
7645 static ssize_t store_antenna(struct device *d,
7646                              struct device_attribute *attr,
7647                              const char *buf, size_t count)
7648 {
7649         int ant;
7650         struct iwl3945_priv *priv = dev_get_drvdata(d);
7651
7652         if (count == 0)
7653                 return 0;
7654
7655         if (sscanf(buf, "%1i", &ant) != 1) {
7656                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7657                 return count;
7658         }
7659
7660         if ((ant >= 0) && (ant <= 2)) {
7661                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7662                 priv->antenna = (enum iwl3945_antenna)ant;
7663         } else
7664                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7665
7666
7667         return count;
7668 }
7669
7670 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7671
7672 static ssize_t show_status(struct device *d,
7673                            struct device_attribute *attr, char *buf)
7674 {
7675         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7676         if (!iwl3945_is_alive(priv))
7677                 return -EAGAIN;
7678         return sprintf(buf, "0x%08x\n", (int)priv->status);
7679 }
7680
7681 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7682
7683 static ssize_t dump_error_log(struct device *d,
7684                               struct device_attribute *attr,
7685                               const char *buf, size_t count)
7686 {
7687         char *p = (char *)buf;
7688
7689         if (p[0] == '1')
7690                 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
7691
7692         return strnlen(buf, count);
7693 }
7694
7695 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7696
7697 static ssize_t dump_event_log(struct device *d,
7698                               struct device_attribute *attr,
7699                               const char *buf, size_t count)
7700 {
7701         char *p = (char *)buf;
7702
7703         if (p[0] == '1')
7704                 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
7705
7706         return strnlen(buf, count);
7707 }
7708
7709 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7710
7711 /*****************************************************************************
7712  *
7713  * driver setup and tear down
7714  *
7715  *****************************************************************************/
7716
7717 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
7718 {
7719         priv->workqueue = create_workqueue(DRV_NAME);
7720
7721         init_waitqueue_head(&priv->wait_command_queue);
7722
7723         INIT_WORK(&priv->up, iwl3945_bg_up);
7724         INIT_WORK(&priv->restart, iwl3945_bg_restart);
7725         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7726         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7727         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7728         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7729         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7730         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7731         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7732         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7733         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7734
7735         iwl3945_hw_setup_deferred_work(priv);
7736
7737         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7738                      iwl3945_irq_tasklet, (unsigned long)priv);
7739 }
7740
7741 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
7742 {
7743         iwl3945_hw_cancel_deferred_work(priv);
7744
7745         cancel_delayed_work_sync(&priv->init_alive_start);
7746         cancel_delayed_work(&priv->scan_check);
7747         cancel_delayed_work(&priv->alive_start);
7748         cancel_work_sync(&priv->beacon_update);
7749 }
7750
7751 static struct attribute *iwl3945_sysfs_entries[] = {
7752         &dev_attr_antenna.attr,
7753         &dev_attr_channels.attr,
7754         &dev_attr_dump_errors.attr,
7755         &dev_attr_dump_events.attr,
7756         &dev_attr_flags.attr,
7757         &dev_attr_filter_flags.attr,
7758 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7759         &dev_attr_measurement.attr,
7760 #endif
7761         &dev_attr_power_level.attr,
7762         &dev_attr_retry_rate.attr,
7763         &dev_attr_statistics.attr,
7764         &dev_attr_status.attr,
7765         &dev_attr_temperature.attr,
7766         &dev_attr_tx_power.attr,
7767 #ifdef CONFIG_IWL3945_DEBUG
7768         &dev_attr_debug_level.attr,
7769 #endif
7770         NULL
7771 };
7772
7773 static struct attribute_group iwl3945_attribute_group = {
7774         .name = NULL,           /* put in device directory */
7775         .attrs = iwl3945_sysfs_entries,
7776 };
7777
7778 static struct ieee80211_ops iwl3945_hw_ops = {
7779         .tx = iwl3945_mac_tx,
7780         .start = iwl3945_mac_start,
7781         .stop = iwl3945_mac_stop,
7782         .add_interface = iwl3945_mac_add_interface,
7783         .remove_interface = iwl3945_mac_remove_interface,
7784         .config = iwl3945_mac_config,
7785         .config_interface = iwl3945_mac_config_interface,
7786         .configure_filter = iwl3945_configure_filter,
7787         .set_key = iwl3945_mac_set_key,
7788         .get_stats = iwl3945_mac_get_stats,
7789         .get_tx_stats = iwl3945_mac_get_tx_stats,
7790         .conf_tx = iwl3945_mac_conf_tx,
7791         .reset_tsf = iwl3945_mac_reset_tsf,
7792         .bss_info_changed = iwl3945_bss_info_changed,
7793         .hw_scan = iwl3945_mac_hw_scan
7794 };
7795
7796 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7797 {
7798         int err = 0;
7799         struct iwl3945_priv *priv;
7800         struct ieee80211_hw *hw;
7801         struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
7802         unsigned long flags;
7803
7804         /***********************
7805          * 1. Allocating HW data
7806          * ********************/
7807
7808         /* mac80211 allocates memory for this device instance, including
7809          *   space for this driver's private structure */
7810         hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
7811         if (hw == NULL) {
7812                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
7813                 err = -ENOMEM;
7814                 goto out;
7815         }
7816
7817         SET_IEEE80211_DEV(hw, &pdev->dev);
7818
7819         priv = hw->priv;
7820         priv->hw = hw;
7821         priv->pci_dev = pdev;
7822         priv->cfg = cfg;
7823
7824         if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
7825             (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
7826                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7827                           IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7828                 err = -EINVAL;
7829                 goto out;
7830         }
7831
7832         /* Disabling hardware scan means that mac80211 will perform scans
7833          * "the hard way", rather than using device's scan. */
7834         if (iwl3945_param_disable_hw_scan) {
7835                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7836                 iwl3945_hw_ops.hw_scan = NULL;
7837         }
7838
7839         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7840         hw->rate_control_algorithm = "iwl-3945-rs";
7841         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7842
7843         /* Select antenna (may be helpful if only one antenna is connected) */
7844         priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
7845 #ifdef CONFIG_IWL3945_DEBUG
7846         priv->debug_level = iwl3945_param_debug;
7847         atomic_set(&priv->restrict_refcnt, 0);
7848 #endif
7849
7850         /* Tell mac80211 our characteristics */
7851         hw->flags = IEEE80211_HW_SIGNAL_DBM |
7852                     IEEE80211_HW_NOISE_DBM;
7853
7854         hw->wiphy->interface_modes =
7855                 BIT(NL80211_IFTYPE_STATION) |
7856                 BIT(NL80211_IFTYPE_ADHOC);
7857
7858         hw->wiphy->fw_handles_regulatory = true;
7859
7860         /* 4 EDCA QOS priorities */
7861         hw->queues = 4;
7862
7863         /***************************
7864          * 2. Initializing PCI bus
7865          * *************************/
7866         if (pci_enable_device(pdev)) {
7867                 err = -ENODEV;
7868                 goto out_ieee80211_free_hw;
7869         }
7870
7871         pci_set_master(pdev);
7872
7873         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7874         if (!err)
7875                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7876         if (err) {
7877                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
7878                 goto out_pci_disable_device;
7879         }
7880
7881         pci_set_drvdata(pdev, priv);
7882         err = pci_request_regions(pdev, DRV_NAME);
7883         if (err)
7884                 goto out_pci_disable_device;
7885
7886         /***********************
7887          * 3. Read REV Register
7888          * ********************/
7889         priv->hw_base = pci_iomap(pdev, 0, 0);
7890         if (!priv->hw_base) {
7891                 err = -ENODEV;
7892                 goto out_pci_release_regions;
7893         }
7894
7895         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7896                         (unsigned long long) pci_resource_len(pdev, 0));
7897         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7898
7899         /* We disable the RETRY_TIMEOUT register (0x41) to keep
7900          * PCI Tx retries from interfering with C3 CPU state */
7901         pci_write_config_byte(pdev, 0x41, 0x00);
7902
7903         /* nic init */
7904         iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7905                         CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7906
7907         iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7908         err = iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL,
7909                                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7910         if (err < 0) {
7911                 IWL_DEBUG_INFO("Failed to init the card\n");
7912                 goto out_remove_sysfs;
7913         }
7914
7915         /***********************
7916          * 4. Read EEPROM
7917          * ********************/
7918         /* Read the EEPROM */
7919         err = iwl3945_eeprom_init(priv);
7920         if (err) {
7921                 IWL_ERROR("Unable to init EEPROM\n");
7922                 goto out_remove_sysfs;
7923         }
7924         /* MAC Address location in EEPROM same for 3945/4965 */
7925         get_eeprom_mac(priv, priv->mac_addr);
7926         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
7927         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7928
7929         /***********************
7930          * 5. Setup HW Constants
7931          * ********************/
7932         /* Device-specific setup */
7933         if (iwl3945_hw_set_hw_setting(priv)) {
7934                 IWL_ERROR("failed to set hw settings\n");
7935                 goto out_iounmap;
7936         }
7937
7938         /***********************
7939          * 6. Setup priv
7940          * ********************/
7941         priv->retry_rate = 1;
7942         priv->ibss_beacon = NULL;
7943
7944         spin_lock_init(&priv->lock);
7945         spin_lock_init(&priv->power_data.lock);
7946         spin_lock_init(&priv->sta_lock);
7947         spin_lock_init(&priv->hcmd_lock);
7948
7949         INIT_LIST_HEAD(&priv->free_frames);
7950         mutex_init(&priv->mutex);
7951
7952         /* Clear the driver's (not device's) station table */
7953         iwl3945_clear_stations_table(priv);
7954
7955         priv->data_retry_limit = -1;
7956         priv->ieee_channels = NULL;
7957         priv->ieee_rates = NULL;
7958         priv->band = IEEE80211_BAND_2GHZ;
7959
7960         priv->iw_mode = NL80211_IFTYPE_STATION;
7961
7962         iwl3945_reset_qos(priv);
7963
7964         priv->qos_data.qos_active = 0;
7965         priv->qos_data.qos_cap.val = 0;
7966
7967
7968         priv->rates_mask = IWL_RATES_MASK;
7969         /* If power management is turned on, default to AC mode */
7970         priv->power_mode = IWL_POWER_AC;
7971         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
7972
7973         err = iwl3945_init_channel_map(priv);
7974         if (err) {
7975                 IWL_ERROR("initializing regulatory failed: %d\n", err);
7976                 goto out_release_irq;
7977         }
7978
7979         err = iwl3945_init_geos(priv);
7980         if (err) {
7981                 IWL_ERROR("initializing geos failed: %d\n", err);
7982                 goto out_free_channel_map;
7983         }
7984
7985         printk(KERN_INFO DRV_NAME
7986                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7987
7988         /***********************************
7989          * 7. Initialize Module Parameters
7990          * **********************************/
7991
7992         /* Initialize module parameter values here */
7993         /* Disable radio (SW RF KILL) via parameter when loading driver */
7994         if (iwl3945_param_disable) {
7995                 set_bit(STATUS_RF_KILL_SW, &priv->status);
7996                 IWL_DEBUG_INFO("Radio disabled.\n");
7997         }
7998
7999
8000         /***********************
8001          * 8. Setup Services
8002          * ********************/
8003
8004         spin_lock_irqsave(&priv->lock, flags);
8005         iwl3945_disable_interrupts(priv);
8006         spin_unlock_irqrestore(&priv->lock, flags);
8007
8008         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8009         if (err) {
8010                 IWL_ERROR("failed to create sysfs device attributes\n");
8011                 goto out_free_geos;
8012         }
8013
8014         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8015         iwl3945_setup_deferred_work(priv);
8016         iwl3945_setup_rx_handlers(priv);
8017
8018         /***********************
8019          * 9. Conclude
8020          * ********************/
8021         pci_save_state(pdev);
8022         pci_disable_device(pdev);
8023
8024         /*********************************
8025          * 10. Setup and Register mac80211
8026          * *******************************/
8027
8028         err = ieee80211_register_hw(priv->hw);
8029         if (err) {
8030                 IWL_ERROR("Failed to register network device (error %d)\n", err);
8031                 goto  out_remove_sysfs;
8032         }
8033
8034         priv->hw->conf.beacon_int = 100;
8035         priv->mac80211_registered = 1;
8036
8037
8038         err = iwl3945_rfkill_init(priv);
8039         if (err)
8040                 IWL_ERROR("Unable to initialize RFKILL system. "
8041                                   "Ignoring error: %d\n", err);
8042
8043         return 0;
8044
8045  out_remove_sysfs:
8046         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8047  out_free_geos:
8048         iwl3945_free_geos(priv);
8049  out_free_channel_map:
8050         iwl3945_free_channel_map(priv);
8051
8052
8053  out_release_irq:
8054         destroy_workqueue(priv->workqueue);
8055         priv->workqueue = NULL;
8056         iwl3945_unset_hw_setting(priv);
8057
8058  out_iounmap:
8059         pci_iounmap(pdev, priv->hw_base);
8060  out_pci_release_regions:
8061         pci_release_regions(pdev);
8062  out_pci_disable_device:
8063         pci_disable_device(pdev);
8064         pci_set_drvdata(pdev, NULL);
8065  out_ieee80211_free_hw:
8066         ieee80211_free_hw(priv->hw);
8067  out:
8068         return err;
8069 }
8070
8071 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
8072 {
8073         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8074         unsigned long flags;
8075
8076         if (!priv)
8077                 return;
8078
8079         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8080
8081         set_bit(STATUS_EXIT_PENDING, &priv->status);
8082
8083         iwl3945_down(priv);
8084
8085         /* make sure we flush any pending irq or
8086          * tasklet for the driver
8087          */
8088         spin_lock_irqsave(&priv->lock, flags);
8089         iwl3945_disable_interrupts(priv);
8090         spin_unlock_irqrestore(&priv->lock, flags);
8091
8092         iwl_synchronize_irq(priv);
8093
8094         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8095
8096         iwl3945_rfkill_unregister(priv);
8097         iwl3945_dealloc_ucode_pci(priv);
8098
8099         if (priv->rxq.bd)
8100                 iwl3945_rx_queue_free(priv, &priv->rxq);
8101         iwl3945_hw_txq_ctx_free(priv);
8102
8103         iwl3945_unset_hw_setting(priv);
8104         iwl3945_clear_stations_table(priv);
8105
8106         if (priv->mac80211_registered)
8107                 ieee80211_unregister_hw(priv->hw);
8108
8109         /*netif_stop_queue(dev); */
8110         flush_workqueue(priv->workqueue);
8111
8112         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8113          * priv->workqueue... so we can't take down the workqueue
8114          * until now... */
8115         destroy_workqueue(priv->workqueue);
8116         priv->workqueue = NULL;
8117
8118         pci_iounmap(pdev, priv->hw_base);
8119         pci_release_regions(pdev);
8120         pci_disable_device(pdev);
8121         pci_set_drvdata(pdev, NULL);
8122
8123         iwl3945_free_channel_map(priv);
8124         iwl3945_free_geos(priv);
8125         kfree(priv->scan);
8126         if (priv->ibss_beacon)
8127                 dev_kfree_skb(priv->ibss_beacon);
8128
8129         ieee80211_free_hw(priv->hw);
8130 }
8131
8132 #ifdef CONFIG_PM
8133
8134 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8135 {
8136         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8137
8138         if (priv->is_open) {
8139                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8140                 iwl3945_mac_stop(priv->hw);
8141                 priv->is_open = 1;
8142         }
8143
8144         pci_set_power_state(pdev, PCI_D3hot);
8145
8146         return 0;
8147 }
8148
8149 static int iwl3945_pci_resume(struct pci_dev *pdev)
8150 {
8151         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8152
8153         pci_set_power_state(pdev, PCI_D0);
8154
8155         if (priv->is_open)
8156                 iwl3945_mac_start(priv->hw);
8157
8158         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8159         return 0;
8160 }
8161
8162 #endif /* CONFIG_PM */
8163
8164 /*************** RFKILL FUNCTIONS **********/
8165 #ifdef CONFIG_IWL3945_RFKILL
8166 /* software rf-kill from user */
8167 static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
8168 {
8169         struct iwl3945_priv *priv = data;
8170         int err = 0;
8171
8172         if (!priv->rfkill)
8173         return 0;
8174
8175         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
8176                 return 0;
8177
8178         IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
8179         mutex_lock(&priv->mutex);
8180
8181         switch (state) {
8182         case RFKILL_STATE_UNBLOCKED:
8183                 if (iwl3945_is_rfkill_hw(priv)) {
8184                         err = -EBUSY;
8185                         goto out_unlock;
8186                 }
8187                 iwl3945_radio_kill_sw(priv, 0);
8188                 break;
8189         case RFKILL_STATE_SOFT_BLOCKED:
8190                 iwl3945_radio_kill_sw(priv, 1);
8191                 break;
8192         default:
8193                 IWL_WARNING("we received unexpected RFKILL state %d\n", state);
8194                 break;
8195         }
8196 out_unlock:
8197         mutex_unlock(&priv->mutex);
8198
8199         return err;
8200 }
8201
8202 int iwl3945_rfkill_init(struct iwl3945_priv *priv)
8203 {
8204         struct device *device = wiphy_dev(priv->hw->wiphy);
8205         int ret = 0;
8206
8207         BUG_ON(device == NULL);
8208
8209         IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
8210         priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
8211         if (!priv->rfkill) {
8212                 IWL_ERROR("Unable to allocate rfkill device.\n");
8213                 ret = -ENOMEM;
8214                 goto error;
8215         }
8216
8217         priv->rfkill->name = priv->cfg->name;
8218         priv->rfkill->data = priv;
8219         priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
8220         priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
8221         priv->rfkill->user_claim_unsupported = 1;
8222
8223         priv->rfkill->dev.class->suspend = NULL;
8224         priv->rfkill->dev.class->resume = NULL;
8225
8226         ret = rfkill_register(priv->rfkill);
8227         if (ret) {
8228                 IWL_ERROR("Unable to register rfkill: %d\n", ret);
8229                 goto freed_rfkill;
8230         }
8231
8232         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8233         return ret;
8234
8235 freed_rfkill:
8236         if (priv->rfkill != NULL)
8237                 rfkill_free(priv->rfkill);
8238         priv->rfkill = NULL;
8239
8240 error:
8241         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8242         return ret;
8243 }
8244
8245 void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
8246 {
8247         if (priv->rfkill)
8248                 rfkill_unregister(priv->rfkill);
8249
8250         priv->rfkill = NULL;
8251 }
8252
8253 /* set rf-kill to the right state. */
8254 void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
8255 {
8256
8257         if (!priv->rfkill)
8258                 return;
8259
8260         if (iwl3945_is_rfkill_hw(priv)) {
8261                 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
8262                 return;
8263         }
8264
8265         if (!iwl3945_is_rfkill_sw(priv))
8266                 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
8267         else
8268                 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
8269 }
8270 #endif
8271
8272 /*****************************************************************************
8273  *
8274  * driver and module entry point
8275  *
8276  *****************************************************************************/
8277
8278 static struct pci_driver iwl3945_driver = {
8279         .name = DRV_NAME,
8280         .id_table = iwl3945_hw_card_ids,
8281         .probe = iwl3945_pci_probe,
8282         .remove = __devexit_p(iwl3945_pci_remove),
8283 #ifdef CONFIG_PM
8284         .suspend = iwl3945_pci_suspend,
8285         .resume = iwl3945_pci_resume,
8286 #endif
8287 };
8288
8289 static int __init iwl3945_init(void)
8290 {
8291
8292         int ret;
8293         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8294         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8295
8296         ret = iwl3945_rate_control_register();
8297         if (ret) {
8298                 printk(KERN_ERR DRV_NAME
8299                        "Unable to register rate control algorithm: %d\n", ret);
8300                 return ret;
8301         }
8302
8303         ret = pci_register_driver(&iwl3945_driver);
8304         if (ret) {
8305                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
8306                 goto error_register;
8307         }
8308
8309         return ret;
8310
8311 error_register:
8312         iwl3945_rate_control_unregister();
8313         return ret;
8314 }
8315
8316 static void __exit iwl3945_exit(void)
8317 {
8318         pci_unregister_driver(&iwl3945_driver);
8319         iwl3945_rate_control_unregister();
8320 }
8321
8322 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
8323
8324 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8325 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8326 module_param_named(disable, iwl3945_param_disable, int, 0444);
8327 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8328 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8329 MODULE_PARM_DESC(hwcrypto,
8330                  "using hardware crypto engine (default 0 [software])\n");
8331 module_param_named(debug, iwl3945_param_debug, uint, 0444);
8332 MODULE_PARM_DESC(debug, "debug output mask");
8333 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8334 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8335
8336 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8337 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8338
8339 module_exit(iwl3945_exit);
8340 module_init(iwl3945_init);