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 #include "iwl-3945-core.h"
  50 #include "iwl-commands.h"
  51 #include "iwl-3945.h"
  52 #include "iwl-3945-fh.h"
  53 #include "iwl-helpers.h"
  54
  55 #ifdef CONFIG_IWL3945_DEBUG
  56 u32 iwl3945_debug_level;
  57 #endif
  58
  59 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
  60                                   struct iwl3945_tx_queue *txq);
  61
  62 /******************************************************************************
  63  *
  64  * module boiler plate
  65  *
  66  ******************************************************************************/
  67
  68 /* module parameters */
  69 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
  70 static u32 iwl3945_param_debug;    /* def: 0 = minimal debug log messages */
  71 static int iwl3945_param_disable;  /* def: 0 = enable radio */
  72 static int iwl3945_param_antenna;  /* def: 0 = both antennas (use diversity) */
  73 int iwl3945_param_hwcrypto;        /* def: 0 = use software encryption */
  74 int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
  75
  76 /*
  77  * module name, copyright, version, etc.
  78  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  79  */
  80
  81 #define DRV_DESCRIPTION \
  82 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  83
  84 #ifdef CONFIG_IWL3945_DEBUG
  85 #define VD "d"
  86 #else
  87 #define VD
  88 #endif
  89
  90 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  91 #define VS "s"
  92 #else
  93 #define VS
  94 #endif
  95
  96 #define IWLWIFI_VERSION "1.2.26k" VD VS
  97 #define DRV_COPYRIGHT   "Copyright(c) 2003-2008 Intel Corporation"
  98 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  99 #define DRV_VERSION     IWLWIFI_VERSION
 100
 101
 102 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 103 MODULE_VERSION(DRV_VERSION);
 104 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
 105 MODULE_LICENSE("GPL");
 106
 107 static const struct ieee80211_supported_band *iwl3945_get_band(
 108                 struct iwl3945_priv *priv, enum ieee80211_band band)
 109 {
 110         return priv->hw->wiphy->bands[band];
 111 }
 112
 113 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 114  * DMA services
 115  *
 116  * Theory of operation
 117  *
 118  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 119  * of buffer descriptors, each of which points to one or more data buffers for
 120  * the device to read from or fill.  Driver and device exchange status of each
 121  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 122  * entries in each circular buffer, to protect against confusing empty and full
 123  * queue states.
 124  *
 125  * The device reads or writes the data in the queues via the device's several
 126  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 127  *
 128  * For Tx queue, there are low mark and high mark limits. If, after queuing
 129  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 130  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 131  * Tx queue resumed.
 132  *
 133  * The 3945 operates with six queues:  One receive queue, one transmit queue
 134  * (#4) for sending commands to the device firmware, and four transmit queues
 135  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 136  ***************************************************/
 137
 138 int iwl3945_queue_space(const struct iwl3945_queue *q)
 139 {
 140         int s = q->read_ptr - q->write_ptr;
 141
 142         if (q->read_ptr > q->write_ptr)
 143                 s -= q->n_bd;
 144
 145         if (s <= 0)
 146                 s += q->n_window;
 147         /* keep some reserve to not confuse empty and full situations */
 148         s -= 2;
 149         if (s < 0)
 150                 s = 0;
 151         return s;
 152 }
 153
 154 int iwl3945_x2_queue_used(const struct iwl3945_queue *q, int i)
 155 {
 156         return q->write_ptr > q->read_ptr ?
 157                 (i >= q->read_ptr && i < q->write_ptr) :
 158                 !(i < q->read_ptr && i >= q->write_ptr);
 159 }
 160
 161
 162 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
 163 {
 164         /* This is for scan command, the big buffer at end of command array */
 165         if (is_huge)
 166                 return q->n_window;     /* must be power of 2 */
 167
 168         /* Otherwise, use normal size buffers */
 169         return index & (q->n_window - 1);
 170 }
 171
 172 /**
 173  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 174  */
 175 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
 176                           int count, int slots_num, u32 id)
 177 {
 178         q->n_bd = count;
 179         q->n_window = slots_num;
 180         q->id = id;
 181
 182         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 183          * and iwl_queue_dec_wrap are broken. */
 184         BUG_ON(!is_power_of_2(count));
 185
 186         /* slots_num must be power-of-two size, otherwise
 187          * get_cmd_index is broken. */
 188         BUG_ON(!is_power_of_2(slots_num));
 189
 190         q->low_mark = q->n_window / 4;
 191         if (q->low_mark < 4)
 192                 q->low_mark = 4;
 193
 194         q->high_mark = q->n_window / 8;
 195         if (q->high_mark < 2)
 196                 q->high_mark = 2;
 197
 198         q->write_ptr = q->read_ptr = 0;
 199
 200         return 0;
 201 }
 202
 203 /**
 204  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 205  */
 206 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
 207                               struct iwl3945_tx_queue *txq, u32 id)
 208 {
 209         struct pci_dev *dev = priv->pci_dev;
 210
 211         /* Driver private data, only for Tx (not command) queues,
 212          * not shared with device. */
 213         if (id != IWL_CMD_QUEUE_NUM) {
 214                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 215                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 216                 if (!txq->txb) {
 217                         IWL_ERROR("kmalloc for auxiliary BD "
 218                                   "structures failed\n");
 219                         goto error;
 220                 }
 221         } else
 222                 txq->txb = NULL;
 223
 224         /* Circular buffer of transmit frame descriptors (TFDs),
 225          * shared with device */
 226         txq->bd = pci_alloc_consistent(dev,
 227                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 228                         &txq->q.dma_addr);
 229
 230         if (!txq->bd) {
 231                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 232                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 233                 goto error;
 234         }
 235         txq->q.id = id;
 236
 237         return 0;
 238
 239  error:
 240         kfree(txq->txb);
 241         txq->txb = NULL;
 242
 243         return -ENOMEM;
 244 }
 245
 246 /**
 247  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 248  */
 249 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
 250                       struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
 251 {
 252         struct pci_dev *dev = priv->pci_dev;
 253         int len;
 254         int rc = 0;
 255
 256         /*
 257          * Alloc buffer array for commands (Tx or other types of commands).
 258          * For the command queue (#4), allocate command space + one big
 259          * command for scan, since scan command is very huge; the system will
 260          * not have two scans at the same time, so only one is needed.
 261          * For data Tx queues (all other queues), no super-size command
 262          * space is needed.
 263          */
 264         len = sizeof(struct iwl3945_cmd) * slots_num;
 265         if (txq_id == IWL_CMD_QUEUE_NUM)
 266                 len +=  IWL_MAX_SCAN_SIZE;
 267         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 268         if (!txq->cmd)
 269                 return -ENOMEM;
 270
 271         /* Alloc driver data array and TFD circular buffer */
 272         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 273         if (rc) {
 274                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 275
 276                 return -ENOMEM;
 277         }
 278         txq->need_update = 0;
 279
 280         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 281          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 282         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 283
 284         /* Initialize queue high/low-water, head/tail indexes */
 285         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 286
 287         /* Tell device where to find queue, enable DMA channel. */
 288         iwl3945_hw_tx_queue_init(priv, txq);
 289
 290         return 0;
 291 }
 292
 293 /**
 294  * iwl3945_tx_queue_free - Deallocate DMA queue.
 295  * @txq: Transmit queue to deallocate.
 296  *
 297  * Empty queue by removing and destroying all BD's.
 298  * Free all buffers.
 299  * 0-fill, but do not free "txq" descriptor structure.
 300  */
 301 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
 302 {
 303         struct iwl3945_queue *q = &txq->q;
 304         struct pci_dev *dev = priv->pci_dev;
 305         int len;
 306
 307         if (q->n_bd == 0)
 308                 return;
 309
 310         /* first, empty all BD's */
 311         for (; q->write_ptr != q->read_ptr;
 312              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 313                 iwl3945_hw_txq_free_tfd(priv, txq);
 314
 315         len = sizeof(struct iwl3945_cmd) * q->n_window;
 316         if (q->id == IWL_CMD_QUEUE_NUM)
 317                 len += IWL_MAX_SCAN_SIZE;
 318
 319         /* De-alloc array of command/tx buffers */
 320         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 321
 322         /* De-alloc circular buffer of TFDs */
 323         if (txq->q.n_bd)
 324                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
 325                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 326
 327         /* De-alloc array of per-TFD driver data */
 328         kfree(txq->txb);
 329         txq->txb = NULL;
 330
 331         /* 0-fill queue descriptor structure */
 332         memset(txq, 0, sizeof(*txq));
 333 }
 334
 335 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 336
 337 /*************** STATION TABLE MANAGEMENT ****
 338  * mac80211 should be examined to determine if sta_info is duplicating
 339  * the functionality provided here
 340  */
 341
 342 /**************************************************************/
 343 #if 0 /* temporary disable till we add real remove station */
 344 /**
 345  * iwl3945_remove_station - Remove driver's knowledge of station.
 346  *
 347  * NOTE:  This does not remove station from device's station table.
 348  */
 349 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
 350 {
 351         int index = IWL_INVALID_STATION;
 352         int i;
 353         unsigned long flags;
 354
 355         spin_lock_irqsave(&priv->sta_lock, flags);
 356
 357         if (is_ap)
 358                 index = IWL_AP_ID;
 359         else if (is_broadcast_ether_addr(addr))
 360                 index = priv->hw_setting.bcast_sta_id;
 361         else
 362                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 363                         if (priv->stations[i].used &&
 364                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 365                                                 addr)) {
 366                                 index = i;
 367                                 break;
 368                         }
 369
 370         if (unlikely(index == IWL_INVALID_STATION))
 371                 goto out;
 372
 373         if (priv->stations[index].used) {
 374                 priv->stations[index].used = 0;
 375                 priv->num_stations--;
 376         }
 377
 378         BUG_ON(priv->num_stations < 0);
 379
 380 out:
 381         spin_unlock_irqrestore(&priv->sta_lock, flags);
 382         return 0;
 383 }
 384 #endif
 385
 386 /**
 387  * iwl3945_clear_stations_table - Clear the driver's station table
 388  *
 389  * NOTE:  This does not clear or otherwise alter the device's station table.
 390  */
 391 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
 392 {
 393         unsigned long flags;
 394
 395         spin_lock_irqsave(&priv->sta_lock, flags);
 396
 397         priv->num_stations = 0;
 398         memset(priv->stations, 0, sizeof(priv->stations));
 399
 400         spin_unlock_irqrestore(&priv->sta_lock, flags);
 401 }
 402
 403 /**
 404  * iwl3945_add_station - Add station to station tables in driver and device
 405  */
 406 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
 407 {
 408         int i;
 409         int index = IWL_INVALID_STATION;
 410         struct iwl3945_station_entry *station;
 411         unsigned long flags_spin;
 412         u8 rate;
 413
 414         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 415         if (is_ap)
 416                 index = IWL_AP_ID;
 417         else if (is_broadcast_ether_addr(addr))
 418                 index = priv->hw_setting.bcast_sta_id;
 419         else
 420                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 421                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 422                                                 addr)) {
 423                                 index = i;
 424                                 break;
 425                         }
 426
 427                         if (!priv->stations[i].used &&
 428                             index == IWL_INVALID_STATION)
 429                                 index = i;
 430                 }
 431
 432         /* These two conditions has the same outcome but keep them separate
 433           since they have different meaning */
 434         if (unlikely(index == IWL_INVALID_STATION)) {
 435                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 436                 return index;
 437         }
 438
 439         if (priv->stations[index].used &&
 440            !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 441                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 442                 return index;
 443         }
 444
 445         IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
 446         station = &priv->stations[index];
 447         station->used = 1;
 448         priv->num_stations++;
 449
 450         /* Set up the REPLY_ADD_STA command to send to device */
 451         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 452         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 453         station->sta.mode = 0;
 454         station->sta.sta.sta_id = index;
 455         station->sta.station_flags = 0;
 456
 457         if (priv->band == IEEE80211_BAND_5GHZ)
 458                 rate = IWL_RATE_6M_PLCP;
 459         else
 460                 rate =  IWL_RATE_1M_PLCP;
 461
 462         /* Turn on both antennas for the station... */
 463         station->sta.rate_n_flags =
 464                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 465
 466         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 467
 468         /* Add station to device's station table */
 469         iwl3945_send_add_station(priv, &station->sta, flags);
 470         return index;
 471
 472 }
 473
 474 /*************** DRIVER STATUS FUNCTIONS   *****/
 475
 476 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
 477 {
 478         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 479          * set but EXIT_PENDING is not */
 480         return test_bit(STATUS_READY, &priv->status) &&
 481                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 482                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 483 }
 484
 485 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
 486 {
 487         return test_bit(STATUS_ALIVE, &priv->status);
 488 }
 489
 490 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
 491 {
 492         return test_bit(STATUS_INIT, &priv->status);
 493 }
 494
 495 static inline int iwl3945_is_rfkill_sw(struct iwl3945_priv *priv)
 496 {
 497         return test_bit(STATUS_RF_KILL_SW, &priv->status);
 498 }
 499
 500 static inline int iwl3945_is_rfkill_hw(struct iwl3945_priv *priv)
 501 {
 502         return test_bit(STATUS_RF_KILL_HW, &priv->status);
 503 }
 504
 505 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
 506 {
 507         return iwl3945_is_rfkill_hw(priv) ||
 508                 iwl3945_is_rfkill_sw(priv);
 509 }
 510
 511 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
 512 {
 513
 514         if (iwl3945_is_rfkill(priv))
 515                 return 0;
 516
 517         return iwl3945_is_ready(priv);
 518 }
 519
 520 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 521
 522 #define IWL_CMD(x) case x: return #x
 523
 524 static const char *get_cmd_string(u8 cmd)
 525 {
 526         switch (cmd) {
 527                 IWL_CMD(REPLY_ALIVE);
 528                 IWL_CMD(REPLY_ERROR);
 529                 IWL_CMD(REPLY_RXON);
 530                 IWL_CMD(REPLY_RXON_ASSOC);
 531                 IWL_CMD(REPLY_QOS_PARAM);
 532                 IWL_CMD(REPLY_RXON_TIMING);
 533                 IWL_CMD(REPLY_ADD_STA);
 534                 IWL_CMD(REPLY_REMOVE_STA);
 535                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 536                 IWL_CMD(REPLY_3945_RX);
 537                 IWL_CMD(REPLY_TX);
 538                 IWL_CMD(REPLY_RATE_SCALE);
 539                 IWL_CMD(REPLY_LEDS_CMD);
 540                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 541                 IWL_CMD(RADAR_NOTIFICATION);
 542                 IWL_CMD(REPLY_QUIET_CMD);
 543                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 544                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 545                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 546                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 547                 IWL_CMD(POWER_TABLE_CMD);
 548                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 549                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 550                 IWL_CMD(REPLY_SCAN_CMD);
 551                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 552                 IWL_CMD(SCAN_START_NOTIFICATION);
 553                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 554                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 555                 IWL_CMD(BEACON_NOTIFICATION);
 556                 IWL_CMD(REPLY_TX_BEACON);
 557                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 558                 IWL_CMD(QUIET_NOTIFICATION);
 559                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 560                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 561                 IWL_CMD(REPLY_BT_CONFIG);
 562                 IWL_CMD(REPLY_STATISTICS_CMD);
 563                 IWL_CMD(STATISTICS_NOTIFICATION);
 564                 IWL_CMD(REPLY_CARD_STATE_CMD);
 565                 IWL_CMD(CARD_STATE_NOTIFICATION);
 566                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 567         default:
 568                 return "UNKNOWN";
 569
 570         }
 571 }
 572
 573 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 574
 575 /**
 576  * iwl3945_enqueue_hcmd - enqueue a uCode command
 577  * @priv: device private data point
 578  * @cmd: a point to the ucode command structure
 579  *
 580  * The function returns < 0 values to indicate the operation is
 581  * failed. On success, it turns the index (> 0) of command in the
 582  * command queue.
 583  */
 584 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 585 {
 586         struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 587         struct iwl3945_queue *q = &txq->q;
 588         struct iwl3945_tfd_frame *tfd;
 589         u32 *control_flags;
 590         struct iwl3945_cmd *out_cmd;
 591         u32 idx;
 592         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 593         dma_addr_t phys_addr;
 594         int pad;
 595         u16 count;
 596         int ret;
 597         unsigned long flags;
 598
 599         /* If any of the command structures end up being larger than
 600          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 601          * we will need to increase the size of the TFD entries */
 602         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 603                !(cmd->meta.flags & CMD_SIZE_HUGE));
 604
 605
 606         if (iwl3945_is_rfkill(priv)) {
 607                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 608                 return -EIO;
 609         }
 610
 611         if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 612                 IWL_ERROR("No space for Tx\n");
 613                 return -ENOSPC;
 614         }
 615
 616         spin_lock_irqsave(&priv->hcmd_lock, flags);
 617
 618         tfd = &txq->bd[q->write_ptr];
 619         memset(tfd, 0, sizeof(*tfd));
 620
 621         control_flags = (u32 *) tfd;
 622
 623         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 624         out_cmd = &txq->cmd[idx];
 625
 626         out_cmd->hdr.cmd = cmd->id;
 627         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 628         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 629
 630         /* At this point, the out_cmd now has all of the incoming cmd
 631          * information */
 632
 633         out_cmd->hdr.flags = 0;
 634         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 635                         INDEX_TO_SEQ(q->write_ptr));
 636         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 637                 out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
 638
 639         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 640                         offsetof(struct iwl3945_cmd, hdr);
 641         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 642
 643         pad = U32_PAD(cmd->len);
 644         count = TFD_CTL_COUNT_GET(*control_flags);
 645         *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
 646
 647         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 648                      "%d bytes at %d[%d]:%d\n",
 649                      get_cmd_string(out_cmd->hdr.cmd),
 650                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 651                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 652
 653         txq->need_update = 1;
 654
 655         /* Increment and update queue's write index */
 656         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 657         ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
 658
 659         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 660         return ret ? ret : idx;
 661 }
 662
 663 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 664 {
 665         int ret;
 666
 667         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 668
 669         /* An asynchronous command can not expect an SKB to be set. */
 670         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 671
 672         /* An asynchronous command MUST have a callback. */
 673         BUG_ON(!cmd->meta.u.callback);
 674
 675         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 676                 return -EBUSY;
 677
 678         ret = iwl3945_enqueue_hcmd(priv, cmd);
 679         if (ret < 0) {
 680                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 681                           get_cmd_string(cmd->id), ret);
 682                 return ret;
 683         }
 684         return 0;
 685 }
 686
 687 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 688 {
 689         int cmd_idx;
 690         int ret;
 691
 692         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 693
 694          /* A synchronous command can not have a callback set. */
 695         BUG_ON(cmd->meta.u.callback != NULL);
 696
 697         if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
 698                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 699                           get_cmd_string(cmd->id));
 700                 ret = -EBUSY;
 701                 goto out;
 702         }
 703
 704         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 705
 706         if (cmd->meta.flags & CMD_WANT_SKB)
 707                 cmd->meta.source = &cmd->meta;
 708
 709         cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
 710         if (cmd_idx < 0) {
 711                 ret = cmd_idx;
 712                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 713                           get_cmd_string(cmd->id), ret);
 714                 goto out;
 715         }
 716
 717         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 718                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 719                         HOST_COMPLETE_TIMEOUT);
 720         if (!ret) {
 721                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 722                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 723                                   get_cmd_string(cmd->id),
 724                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 725
 726                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 727                         ret = -ETIMEDOUT;
 728                         goto cancel;
 729                 }
 730         }
 731
 732         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 733                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 734                                get_cmd_string(cmd->id));
 735                 ret = -ECANCELED;
 736                 goto fail;
 737         }
 738         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 739                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 740                                get_cmd_string(cmd->id));
 741                 ret = -EIO;
 742                 goto fail;
 743         }
 744         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 745                 IWL_ERROR("Error: Response NULL in '%s'\n",
 746                           get_cmd_string(cmd->id));
 747                 ret = -EIO;
 748                 goto cancel;
 749         }
 750
 751         ret = 0;
 752         goto out;
 753
 754 cancel:
 755         if (cmd->meta.flags & CMD_WANT_SKB) {
 756                 struct iwl3945_cmd *qcmd;
 757
 758                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 759                  * TX cmd queue. Otherwise in case the cmd comes
 760                  * in later, it will possibly set an invalid
 761                  * address (cmd->meta.source). */
 762                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 763                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 764         }
 765 fail:
 766         if (cmd->meta.u.skb) {
 767                 dev_kfree_skb_any(cmd->meta.u.skb);
 768                 cmd->meta.u.skb = NULL;
 769         }
 770 out:
 771         clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
 772         return ret;
 773 }
 774
 775 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 776 {
 777         if (cmd->meta.flags & CMD_ASYNC)
 778                 return iwl3945_send_cmd_async(priv, cmd);
 779
 780         return iwl3945_send_cmd_sync(priv, cmd);
 781 }
 782
 783 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
 784 {
 785         struct iwl3945_host_cmd cmd = {
 786                 .id = id,
 787                 .len = len,
 788                 .data = data,
 789         };
 790
 791         return iwl3945_send_cmd_sync(priv, &cmd);
 792 }
 793
 794 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
 795 {
 796         struct iwl3945_host_cmd cmd = {
 797                 .id = id,
 798                 .len = sizeof(val),
 799                 .data = &val,
 800         };
 801
 802         return iwl3945_send_cmd_sync(priv, &cmd);
 803 }
 804
 805 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
 806 {
 807         return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 808 }
 809
 810 /**
 811  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 812  * @band: 2.4 or 5 GHz band
 813  * @channel: Any channel valid for the requested band
 814
 815  * In addition to setting the staging RXON, priv->band is also set.
 816  *
 817  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 818  * in the staging RXON flag structure based on the band
 819  */
 820 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
 821                                     enum ieee80211_band band,
 822                                     u16 channel)
 823 {
 824         if (!iwl3945_get_channel_info(priv, band, channel)) {
 825                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 826                                channel, band);
 827                 return -EINVAL;
 828         }
 829
 830         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 831             (priv->band == band))
 832                 return 0;
 833
 834         priv->staging_rxon.channel = cpu_to_le16(channel);
 835         if (band == IEEE80211_BAND_5GHZ)
 836                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 837         else
 838                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 839
 840         priv->band = band;
 841
 842         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 843
 844         return 0;
 845 }
 846
 847 /**
 848  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 849  *
 850  * NOTE:  This is really only useful during development and can eventually
 851  * be #ifdef'd out once the driver is stable and folks aren't actively
 852  * making changes
 853  */
 854 static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
 855 {
 856         int error = 0;
 857         int counter = 1;
 858
 859         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 860                 error |= le32_to_cpu(rxon->flags &
 861                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 862                                  RXON_FLG_RADAR_DETECT_MSK));
 863                 if (error)
 864                         IWL_WARNING("check 24G fields %d | %d\n",
 865                                     counter++, error);
 866         } else {
 867                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 868                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 869                 if (error)
 870                         IWL_WARNING("check 52 fields %d | %d\n",
 871                                     counter++, error);
 872                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 873                 if (error)
 874                         IWL_WARNING("check 52 CCK %d | %d\n",
 875                                     counter++, error);
 876         }
 877         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 878         if (error)
 879                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 880
 881         /* make sure basic rates 6Mbps and 1Mbps are supported */
 882         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 883                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 884         if (error)
 885                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 886
 887         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 888         if (error)
 889                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 890
 891         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 892                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 893         if (error)
 894                 IWL_WARNING("check CCK and short slot %d | %d\n",
 895                             counter++, error);
 896
 897         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 898                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 899         if (error)
 900                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 901                             counter++, error);
 902
 903         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 904                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 905         if (error)
 906                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 907                             counter++, error);
 908
 909         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 910                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 911                                 RXON_FLG_ANT_A_MSK)) == 0);
 912         if (error)
 913                 IWL_WARNING("check antenna %d %d\n", counter++, error);
 914
 915         if (error)
 916                 IWL_WARNING("Tuning to channel %d\n",
 917                             le16_to_cpu(rxon->channel));
 918
 919         if (error) {
 920                 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
 921                 return -1;
 922         }
 923         return 0;
 924 }
 925
 926 /**
 927  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 928  * @priv: staging_rxon is compared to active_rxon
 929  *
 930  * If the RXON structure is changing enough to require a new tune,
 931  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 932  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 933  */
 934 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
 935 {
 936
 937         /* These items are only settable from the full RXON command */
 938         if (!(iwl3945_is_associated(priv)) ||
 939             compare_ether_addr(priv->staging_rxon.bssid_addr,
 940                                priv->active_rxon.bssid_addr) ||
 941             compare_ether_addr(priv->staging_rxon.node_addr,
 942                                priv->active_rxon.node_addr) ||
 943             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 944                                priv->active_rxon.wlap_bssid_addr) ||
 945             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 946             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 947             (priv->staging_rxon.air_propagation !=
 948              priv->active_rxon.air_propagation) ||
 949             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 950                 return 1;
 951
 952         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 953          * be updated with the RXON_ASSOC command -- however only some
 954          * flag transitions are allowed using RXON_ASSOC */
 955
 956         /* Check if we are not switching bands */
 957         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 958             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 959                 return 1;
 960
 961         /* Check if we are switching association toggle */
 962         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 963                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 964                 return 1;
 965
 966         return 0;
 967 }
 968
 969 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
 970 {
 971         int rc = 0;
 972         struct iwl_rx_packet *res = NULL;
 973         struct iwl3945_rxon_assoc_cmd rxon_assoc;
 974         struct iwl3945_host_cmd cmd = {
 975                 .id = REPLY_RXON_ASSOC,
 976                 .len = sizeof(rxon_assoc),
 977                 .meta.flags = CMD_WANT_SKB,
 978                 .data = &rxon_assoc,
 979         };
 980         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
 981         const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
 982
 983         if ((rxon1->flags == rxon2->flags) &&
 984             (rxon1->filter_flags == rxon2->filter_flags) &&
 985             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 986             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 987                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 988                 return 0;
 989         }
 990
 991         rxon_assoc.flags = priv->staging_rxon.flags;
 992         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
 993         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
 994         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
 995         rxon_assoc.reserved = 0;
 996
 997         rc = iwl3945_send_cmd_sync(priv, &cmd);
 998         if (rc)
 999                 return rc;
1000
1001         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1002         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1003                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1004                 rc = -EIO;
1005         }
1006
1007         priv->alloc_rxb_skb--;
1008         dev_kfree_skb_any(cmd.meta.u.skb);
1009
1010         return rc;
1011 }
1012
1013 /**
1014  * iwl3945_commit_rxon - commit staging_rxon to hardware
1015  *
1016  * The RXON command in staging_rxon is committed to the hardware and
1017  * the active_rxon structure is updated with the new data.  This
1018  * function correctly transitions out of the RXON_ASSOC_MSK state if
1019  * a HW tune is required based on the RXON structure changes.
1020  */
1021 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1022 {
1023         /* cast away the const for active_rxon in this function */
1024         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1025         int rc = 0;
1026
1027         if (!iwl3945_is_alive(priv))
1028                 return -1;
1029
1030         /* always get timestamp with Rx frame */
1031         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1032
1033         /* select antenna */
1034         priv->staging_rxon.flags &=
1035             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1036         priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1037
1038         rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
1039         if (rc) {
1040                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1041                 return -EINVAL;
1042         }
1043
1044         /* If we don't need to send a full RXON, we can use
1045          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1046          * and other flags for the current radio configuration. */
1047         if (!iwl3945_full_rxon_required(priv)) {
1048                 rc = iwl3945_send_rxon_assoc(priv);
1049                 if (rc) {
1050                         IWL_ERROR("Error setting RXON_ASSOC "
1051                                   "configuration (%d).\n", rc);
1052                         return rc;
1053                 }
1054
1055                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1056
1057                 return 0;
1058         }
1059
1060         /* If we are currently associated and the new config requires
1061          * an RXON_ASSOC and the new config wants the associated mask enabled,
1062          * we must clear the associated from the active configuration
1063          * before we apply the new config */
1064         if (iwl3945_is_associated(priv) &&
1065             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1066                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1067                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1068
1069                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1070                                       sizeof(struct iwl3945_rxon_cmd),
1071                                       &priv->active_rxon);
1072
1073                 /* If the mask clearing failed then we set
1074                  * active_rxon back to what it was previously */
1075                 if (rc) {
1076                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1077                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1078                                   "configuration (%d).\n", rc);
1079                         return rc;
1080                 }
1081         }
1082
1083         IWL_DEBUG_INFO("Sending RXON\n"
1084                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1085                        "* channel = %d\n"
1086                        "* bssid = %pM\n",
1087                        ((priv->staging_rxon.filter_flags &
1088                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1089                        le16_to_cpu(priv->staging_rxon.channel),
1090                        priv->staging_rxon.bssid_addr);
1091
1092         /* Apply the new configuration */
1093         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1094                               sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1095         if (rc) {
1096                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1097                 return rc;
1098         }
1099
1100         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1101
1102         iwl3945_clear_stations_table(priv);
1103
1104         /* If we issue a new RXON command which required a tune then we must
1105          * send a new TXPOWER command or we won't be able to Tx any frames */
1106         rc = iwl3945_hw_reg_send_txpower(priv);
1107         if (rc) {
1108                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1109                 return rc;
1110         }
1111
1112         /* Add the broadcast address so we can send broadcast frames */
1113         if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1114             IWL_INVALID_STATION) {
1115                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1116                 return -EIO;
1117         }
1118
1119         /* If we have set the ASSOC_MSK and we are in BSS mode then
1120          * add the IWL_AP_ID to the station rate table */
1121         if (iwl3945_is_associated(priv) &&
1122             (priv->iw_mode == NL80211_IFTYPE_STATION))
1123                 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1124                     == IWL_INVALID_STATION) {
1125                         IWL_ERROR("Error adding AP address for transmit.\n");
1126                         return -EIO;
1127                 }
1128
1129         /* Init the hardware's rate fallback order based on the band */
1130         rc = iwl3945_init_hw_rate_table(priv);
1131         if (rc) {
1132                 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1133                 return -EIO;
1134         }
1135
1136         return 0;
1137 }
1138
1139 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1140 {
1141         struct iwl_bt_cmd bt_cmd = {
1142                 .flags = 3,
1143                 .lead_time = 0xAA,
1144                 .max_kill = 1,
1145                 .kill_ack_mask = 0,
1146                 .kill_cts_mask = 0,
1147         };
1148
1149         return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1150                                         sizeof(bt_cmd), &bt_cmd);
1151 }
1152
1153 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1154 {
1155         int rc = 0;
1156         struct iwl_rx_packet *res;
1157         struct iwl3945_host_cmd cmd = {
1158                 .id = REPLY_SCAN_ABORT_CMD,
1159                 .meta.flags = CMD_WANT_SKB,
1160         };
1161
1162         /* If there isn't a scan actively going on in the hardware
1163          * then we are in between scan bands and not actually
1164          * actively scanning, so don't send the abort command */
1165         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1166                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1167                 return 0;
1168         }
1169
1170         rc = iwl3945_send_cmd_sync(priv, &cmd);
1171         if (rc) {
1172                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1173                 return rc;
1174         }
1175
1176         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1177         if (res->u.status != CAN_ABORT_STATUS) {
1178                 /* The scan abort will return 1 for success or
1179                  * 2 for "failure".  A failure condition can be
1180                  * due to simply not being in an active scan which
1181                  * can occur if we send the scan abort before we
1182                  * the microcode has notified us that a scan is
1183                  * completed. */
1184                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1185                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1186                 clear_bit(STATUS_SCAN_HW, &priv->status);
1187         }
1188
1189         dev_kfree_skb_any(cmd.meta.u.skb);
1190
1191         return rc;
1192 }
1193
1194 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1195                                         struct iwl3945_cmd *cmd,
1196                                         struct sk_buff *skb)
1197 {
1198         return 1;
1199 }
1200
1201 /*
1202  * CARD_STATE_CMD
1203  *
1204  * Use: Sets the device's internal card state to enable, disable, or halt
1205  *
1206  * When in the 'enable' state the card operates as normal.
1207  * When in the 'disable' state, the card enters into a low power mode.
1208  * When in the 'halt' state, the card is shut down and must be fully
1209  * restarted to come back on.
1210  */
1211 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1212 {
1213         struct iwl3945_host_cmd cmd = {
1214                 .id = REPLY_CARD_STATE_CMD,
1215                 .len = sizeof(u32),
1216                 .data = &flags,
1217                 .meta.flags = meta_flag,
1218         };
1219
1220         if (meta_flag & CMD_ASYNC)
1221                 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1222
1223         return iwl3945_send_cmd(priv, &cmd);
1224 }
1225
1226 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1227                                      struct iwl3945_cmd *cmd, struct sk_buff *skb)
1228 {
1229         struct iwl_rx_packet *res = NULL;
1230
1231         if (!skb) {
1232                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1233                 return 1;
1234         }
1235
1236         res = (struct iwl_rx_packet *)skb->data;
1237         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1238                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1239                           res->hdr.flags);
1240                 return 1;
1241         }
1242
1243         switch (res->u.add_sta.status) {
1244         case ADD_STA_SUCCESS_MSK:
1245                 break;
1246         default:
1247                 break;
1248         }
1249
1250         /* We didn't cache the SKB; let the caller free it */
1251         return 1;
1252 }
1253
1254 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1255                          struct iwl3945_addsta_cmd *sta, u8 flags)
1256 {
1257         struct iwl_rx_packet *res = NULL;
1258         int rc = 0;
1259         struct iwl3945_host_cmd cmd = {
1260                 .id = REPLY_ADD_STA,
1261                 .len = sizeof(struct iwl3945_addsta_cmd),
1262                 .meta.flags = flags,
1263                 .data = sta,
1264         };
1265
1266         if (flags & CMD_ASYNC)
1267                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1268         else
1269                 cmd.meta.flags |= CMD_WANT_SKB;
1270
1271         rc = iwl3945_send_cmd(priv, &cmd);
1272
1273         if (rc || (flags & CMD_ASYNC))
1274                 return rc;
1275
1276         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1277         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1278                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1279                           res->hdr.flags);
1280                 rc = -EIO;
1281         }
1282
1283         if (rc == 0) {
1284                 switch (res->u.add_sta.status) {
1285                 case ADD_STA_SUCCESS_MSK:
1286                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1287                         break;
1288                 default:
1289                         rc = -EIO;
1290                         IWL_WARNING("REPLY_ADD_STA failed\n");
1291                         break;
1292                 }
1293         }
1294
1295         priv->alloc_rxb_skb--;
1296         dev_kfree_skb_any(cmd.meta.u.skb);
1297
1298         return rc;
1299 }
1300
1301 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1302                                    struct ieee80211_key_conf *keyconf,
1303                                    u8 sta_id)
1304 {
1305         unsigned long flags;
1306         __le16 key_flags = 0;
1307
1308         switch (keyconf->alg) {
1309         case ALG_CCMP:
1310                 key_flags |= STA_KEY_FLG_CCMP;
1311                 key_flags |= cpu_to_le16(
1312                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1313                 key_flags &= ~STA_KEY_FLG_INVALID;
1314                 break;
1315         case ALG_TKIP:
1316         case ALG_WEP:
1317         default:
1318                 return -EINVAL;
1319         }
1320         spin_lock_irqsave(&priv->sta_lock, flags);
1321         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1322         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1323         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1324                keyconf->keylen);
1325
1326         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1327                keyconf->keylen);
1328         priv->stations[sta_id].sta.key.key_flags = key_flags;
1329         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1330         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1331
1332         spin_unlock_irqrestore(&priv->sta_lock, flags);
1333
1334         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1335         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1336         return 0;
1337 }
1338
1339 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1340 {
1341         unsigned long flags;
1342
1343         spin_lock_irqsave(&priv->sta_lock, flags);
1344         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1345         memset(&priv->stations[sta_id].sta.key, 0,
1346                 sizeof(struct iwl4965_keyinfo));
1347         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1348         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1349         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1350         spin_unlock_irqrestore(&priv->sta_lock, flags);
1351
1352         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1353         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1354         return 0;
1355 }
1356
1357 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1358 {
1359         struct list_head *element;
1360
1361         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1362                        priv->frames_count);
1363
1364         while (!list_empty(&priv->free_frames)) {
1365                 element = priv->free_frames.next;
1366                 list_del(element);
1367                 kfree(list_entry(element, struct iwl3945_frame, list));
1368                 priv->frames_count--;
1369         }
1370
1371         if (priv->frames_count) {
1372                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1373                             priv->frames_count);
1374                 priv->frames_count = 0;
1375         }
1376 }
1377
1378 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1379 {
1380         struct iwl3945_frame *frame;
1381         struct list_head *element;
1382         if (list_empty(&priv->free_frames)) {
1383                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1384                 if (!frame) {
1385                         IWL_ERROR("Could not allocate frame!\n");
1386                         return NULL;
1387                 }
1388
1389                 priv->frames_count++;
1390                 return frame;
1391         }
1392
1393         element = priv->free_frames.next;
1394         list_del(element);
1395         return list_entry(element, struct iwl3945_frame, list);
1396 }
1397
1398 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1399 {
1400         memset(frame, 0, sizeof(*frame));
1401         list_add(&frame->list, &priv->free_frames);
1402 }
1403
1404 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1405                                 struct ieee80211_hdr *hdr,
1406                                 int left)
1407 {
1408
1409         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1410             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1411              (priv->iw_mode != NL80211_IFTYPE_AP)))
1412                 return 0;
1413
1414         if (priv->ibss_beacon->len > left)
1415                 return 0;
1416
1417         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1418
1419         return priv->ibss_beacon->len;
1420 }
1421
1422 static u8 iwl3945_rate_get_lowest_plcp(struct iwl3945_priv *priv)
1423 {
1424         u8 i;
1425         int rate_mask;
1426
1427         /* Set rate mask*/
1428         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1429                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1430         else
1431                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
1432
1433         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1434              i = iwl3945_rates[i].next_ieee) {
1435                 if (rate_mask & (1 << i))
1436                         return iwl3945_rates[i].plcp;
1437         }
1438
1439         /* No valid rate was found. Assign the lowest one */
1440         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1441                 return IWL_RATE_1M_PLCP;
1442         else
1443                 return IWL_RATE_6M_PLCP;
1444 }
1445
1446 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1447 {
1448         struct iwl3945_frame *frame;
1449         unsigned int frame_size;
1450         int rc;
1451         u8 rate;
1452
1453         frame = iwl3945_get_free_frame(priv);
1454
1455         if (!frame) {
1456                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1457                           "command.\n");
1458                 return -ENOMEM;
1459         }
1460
1461         rate = iwl3945_rate_get_lowest_plcp(priv);
1462
1463         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1464
1465         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1466                               &frame->u.cmd[0]);
1467
1468         iwl3945_free_frame(priv, frame);
1469
1470         return rc;
1471 }
1472
1473 /******************************************************************************
1474  *
1475  * EEPROM related functions
1476  *
1477  ******************************************************************************/
1478
1479 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1480 {
1481         memcpy(mac, priv->eeprom.mac_address, 6);
1482 }
1483
1484 /*
1485  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1486  * embedded controller) as EEPROM reader; each read is a series of pulses
1487  * to/from the EEPROM chip, not a single event, so even reads could conflict
1488  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1489  * simply claims ownership, which should be safe when this function is called
1490  * (i.e. before loading uCode!).
1491  */
1492 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1493 {
1494         _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1495         return 0;
1496 }
1497
1498 /**
1499  * iwl3945_eeprom_init - read EEPROM contents
1500  *
1501  * Load the EEPROM contents from adapter into priv->eeprom
1502  *
1503  * NOTE:  This routine uses the non-debug IO access functions.
1504  */
1505 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1506 {
1507         u16 *e = (u16 *)&priv->eeprom;
1508         u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1509         int sz = sizeof(priv->eeprom);
1510         int ret;
1511         u16 addr;
1512
1513         /* The EEPROM structure has several padding buffers within it
1514          * and when adding new EEPROM maps is subject to programmer errors
1515          * which may be very difficult to identify without explicitly
1516          * checking the resulting size of the eeprom map. */
1517         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1518
1519         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1520                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
1521                 return -ENOENT;
1522         }
1523
1524         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1525         ret = iwl3945_eeprom_acquire_semaphore(priv);
1526         if (ret < 0) {
1527                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1528                 return -ENOENT;
1529         }
1530
1531         /* eeprom is an array of 16bit values */
1532         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1533                 u32 r;
1534
1535                 _iwl3945_write32(priv, CSR_EEPROM_REG,
1536                                  CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1537                 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1538                 ret = iwl3945_poll_direct_bit(priv, CSR_EEPROM_REG,
1539                                               CSR_EEPROM_REG_READ_VALID_MSK,
1540                                               IWL_EEPROM_ACCESS_TIMEOUT);
1541                 if (ret < 0) {
1542                         IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
1543                         return ret;
1544                 }
1545
1546                 r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1547                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1548         }
1549
1550         return 0;
1551 }
1552
1553 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1554 {
1555         if (priv->hw_setting.shared_virt)
1556                 pci_free_consistent(priv->pci_dev,
1557                                     sizeof(struct iwl3945_shared),
1558                                     priv->hw_setting.shared_virt,
1559                                     priv->hw_setting.shared_phys);
1560 }
1561
1562 /**
1563  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1564  *
1565  * return : set the bit for each supported rate insert in ie
1566  */
1567 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1568                                     u16 basic_rate, int *left)
1569 {
1570         u16 ret_rates = 0, bit;
1571         int i;
1572         u8 *cnt = ie;
1573         u8 *rates = ie + 1;
1574
1575         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1576                 if (bit & supported_rate) {
1577                         ret_rates |= bit;
1578                         rates[*cnt] = iwl3945_rates[i].ieee |
1579                                 ((bit & basic_rate) ? 0x80 : 0x00);
1580                         (*cnt)++;
1581                         (*left)--;
1582                         if ((*left <= 0) ||
1583                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1584                                 break;
1585                 }
1586         }
1587
1588         return ret_rates;
1589 }
1590
1591 /**
1592  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1593  */
1594 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1595                               struct ieee80211_mgmt *frame,
1596                               int left)
1597 {
1598         int len = 0;
1599         u8 *pos = NULL;
1600         u16 active_rates, ret_rates, cck_rates;
1601
1602         /* Make sure there is enough space for the probe request,
1603          * two mandatory IEs and the data */
1604         left -= 24;
1605         if (left < 0)
1606                 return 0;
1607         len += 24;
1608
1609         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1610         memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1611         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1612         memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1613         frame->seq_ctrl = 0;
1614
1615         /* fill in our indirect SSID IE */
1616         /* ...next IE... */
1617
1618         left -= 2;
1619         if (left < 0)
1620                 return 0;
1621         len += 2;
1622         pos = &(frame->u.probe_req.variable[0]);
1623         *pos++ = WLAN_EID_SSID;
1624         *pos++ = 0;
1625
1626         /* fill in supported rate */
1627         /* ...next IE... */
1628         left -= 2;
1629         if (left < 0)
1630                 return 0;
1631
1632         /* ... fill it in... */
1633         *pos++ = WLAN_EID_SUPP_RATES;
1634         *pos = 0;
1635
1636         priv->active_rate = priv->rates_mask;
1637         active_rates = priv->active_rate;
1638         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1639
1640         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1641         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1642                         priv->active_rate_basic, &left);
1643         active_rates &= ~ret_rates;
1644
1645         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1646                                  priv->active_rate_basic, &left);
1647         active_rates &= ~ret_rates;
1648
1649         len += 2 + *pos;
1650         pos += (*pos) + 1;
1651         if (active_rates == 0)
1652                 goto fill_end;
1653
1654         /* fill in supported extended rate */
1655         /* ...next IE... */
1656         left -= 2;
1657         if (left < 0)
1658                 return 0;
1659         /* ... fill it in... */
1660         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1661         *pos = 0;
1662         iwl3945_supported_rate_to_ie(pos, active_rates,
1663                                  priv->active_rate_basic, &left);
1664         if (*pos > 0)
1665                 len += 2 + *pos;
1666
1667  fill_end:
1668         return (u16)len;
1669 }
1670
1671 /*
1672  * QoS  support
1673 */
1674 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1675                                        struct iwl_qosparam_cmd *qos)
1676 {
1677
1678         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1679                                 sizeof(struct iwl_qosparam_cmd), qos);
1680 }
1681
1682 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1683 {
1684         u16 cw_min = 15;
1685         u16 cw_max = 1023;
1686         u8 aifs = 2;
1687         u8 is_legacy = 0;
1688         unsigned long flags;
1689         int i;
1690
1691         spin_lock_irqsave(&priv->lock, flags);
1692         priv->qos_data.qos_active = 0;
1693
1694         /* QoS always active in AP and ADHOC mode
1695          * In STA mode wait for association
1696          */
1697         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
1698             priv->iw_mode == NL80211_IFTYPE_AP)
1699                 priv->qos_data.qos_active = 1;
1700         else
1701                 priv->qos_data.qos_active = 0;
1702
1703
1704         /* check for legacy mode */
1705         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
1706              (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
1707             (priv->iw_mode == NL80211_IFTYPE_STATION &&
1708              (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
1709                 cw_min = 31;
1710                 is_legacy = 1;
1711         }
1712
1713         if (priv->qos_data.qos_active)
1714                 aifs = 3;
1715
1716         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1717         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1718         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1719         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1720         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1721
1722         if (priv->qos_data.qos_active) {
1723                 i = 1;
1724                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1725                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1726                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1727                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1728                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1729
1730                 i = 2;
1731                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1732                         cpu_to_le16((cw_min + 1) / 2 - 1);
1733                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1734                         cpu_to_le16(cw_max);
1735                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1736                 if (is_legacy)
1737                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1738                                 cpu_to_le16(6016);
1739                 else
1740                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1741                                 cpu_to_le16(3008);
1742                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1743
1744                 i = 3;
1745                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1746                         cpu_to_le16((cw_min + 1) / 4 - 1);
1747                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1748                         cpu_to_le16((cw_max + 1) / 2 - 1);
1749                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1750                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1751                 if (is_legacy)
1752                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1753                                 cpu_to_le16(3264);
1754                 else
1755                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1756                                 cpu_to_le16(1504);
1757         } else {
1758                 for (i = 1; i < 4; i++) {
1759                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1760                                 cpu_to_le16(cw_min);
1761                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1762                                 cpu_to_le16(cw_max);
1763                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1764                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1765                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1766                 }
1767         }
1768         IWL_DEBUG_QOS("set QoS to default \n");
1769
1770         spin_unlock_irqrestore(&priv->lock, flags);
1771 }
1772
1773 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
1774 {
1775         unsigned long flags;
1776
1777         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1778                 return;
1779
1780         spin_lock_irqsave(&priv->lock, flags);
1781         priv->qos_data.def_qos_parm.qos_flags = 0;
1782
1783         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1784             !priv->qos_data.qos_cap.q_AP.txop_request)
1785                 priv->qos_data.def_qos_parm.qos_flags |=
1786                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1787
1788         if (priv->qos_data.qos_active)
1789                 priv->qos_data.def_qos_parm.qos_flags |=
1790                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1791
1792         spin_unlock_irqrestore(&priv->lock, flags);
1793
1794         if (force || iwl3945_is_associated(priv)) {
1795                 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
1796                               priv->qos_data.qos_active);
1797
1798                 iwl3945_send_qos_params_command(priv,
1799                                 &(priv->qos_data.def_qos_parm));
1800         }
1801 }
1802
1803 /*
1804  * Power management (not Tx power!) functions
1805  */
1806 #define MSEC_TO_USEC 1024
1807
1808
1809 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1810 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1811 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1812 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1813                                      __constant_cpu_to_le32(X1), \
1814                                      __constant_cpu_to_le32(X2), \
1815                                      __constant_cpu_to_le32(X3), \
1816                                      __constant_cpu_to_le32(X4)}
1817
1818 /* default power management (not Tx power) table values */
1819 /* for TIM  0-10 */
1820 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
1821         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1822         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1823         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1824         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1825         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1826         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1827 };
1828
1829 /* for TIM > 10 */
1830 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
1831         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1832         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1833                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1834         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1835                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1836         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1837                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1838         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1839         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1840                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1841 };
1842
1843 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
1844 {
1845         int rc = 0, i;
1846         struct iwl3945_power_mgr *pow_data;
1847         int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
1848         u16 pci_pm;
1849
1850         IWL_DEBUG_POWER("Initialize power \n");
1851
1852         pow_data = &(priv->power_data);
1853
1854         memset(pow_data, 0, sizeof(*pow_data));
1855
1856         pow_data->active_index = IWL_POWER_RANGE_0;
1857         pow_data->dtim_val = 0xffff;
1858
1859         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1860         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1861
1862         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1863         if (rc != 0)
1864                 return 0;
1865         else {
1866                 struct iwl_powertable_cmd *cmd;
1867
1868                 IWL_DEBUG_POWER("adjust power command flags\n");
1869
1870                 for (i = 0; i < IWL_POWER_AC; i++) {
1871                         cmd = &pow_data->pwr_range_0[i].cmd;
1872
1873                         if (pci_pm & 0x1)
1874                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1875                         else
1876                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1877                 }
1878         }
1879         return rc;
1880 }
1881
1882 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1883                                 struct iwl_powertable_cmd *cmd, u32 mode)
1884 {
1885         int rc = 0, i;
1886         u8 skip;
1887         u32 max_sleep = 0;
1888         struct iwl3945_power_vec_entry *range;
1889         u8 period = 0;
1890         struct iwl3945_power_mgr *pow_data;
1891
1892         if (mode > IWL_POWER_INDEX_5) {
1893                 IWL_DEBUG_POWER("Error invalid power mode \n");
1894                 return -1;
1895         }
1896         pow_data = &(priv->power_data);
1897
1898         if (pow_data->active_index == IWL_POWER_RANGE_0)
1899                 range = &pow_data->pwr_range_0[0];
1900         else
1901                 range = &pow_data->pwr_range_1[1];
1902
1903         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1904
1905 #ifdef IWL_MAC80211_DISABLE
1906         if (priv->assoc_network != NULL) {
1907                 unsigned long flags;
1908
1909                 period = priv->assoc_network->tim.tim_period;
1910         }
1911 #endif  /*IWL_MAC80211_DISABLE */
1912         skip = range[mode].no_dtim;
1913
1914         if (period == 0) {
1915                 period = 1;
1916                 skip = 0;
1917         }
1918
1919         if (skip == 0) {
1920                 max_sleep = period;
1921                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1922         } else {
1923                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1924                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1925                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1926         }
1927
1928         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1929                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1930                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1931         }
1932
1933         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1934         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1935         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1936         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1937                         le32_to_cpu(cmd->sleep_interval[0]),
1938                         le32_to_cpu(cmd->sleep_interval[1]),
1939                         le32_to_cpu(cmd->sleep_interval[2]),
1940                         le32_to_cpu(cmd->sleep_interval[3]),
1941                         le32_to_cpu(cmd->sleep_interval[4]));
1942
1943         return rc;
1944 }
1945
1946 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
1947 {
1948         u32 uninitialized_var(final_mode);
1949         int rc;
1950         struct iwl_powertable_cmd cmd;
1951
1952         /* If on battery, set to 3,
1953          * if plugged into AC power, set to CAM ("continuously aware mode"),
1954          * else user level */
1955         switch (mode) {
1956         case IWL_POWER_BATTERY:
1957                 final_mode = IWL_POWER_INDEX_3;
1958                 break;
1959         case IWL_POWER_AC:
1960                 final_mode = IWL_POWER_MODE_CAM;
1961                 break;
1962         default:
1963                 final_mode = mode;
1964                 break;
1965         }
1966
1967         iwl3945_update_power_cmd(priv, &cmd, final_mode);
1968
1969         /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1970         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD,
1971                                 sizeof(struct iwl3945_powertable_cmd), &cmd);
1972
1973         if (final_mode == IWL_POWER_MODE_CAM)
1974                 clear_bit(STATUS_POWER_PMI, &priv->status);
1975         else
1976                 set_bit(STATUS_POWER_PMI, &priv->status);
1977
1978         return rc;
1979 }
1980
1981 /**
1982  * iwl3945_scan_cancel - Cancel any currently executing HW scan
1983  *
1984  * NOTE: priv->mutex is not required before calling this function
1985  */
1986 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
1987 {
1988         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1989                 clear_bit(STATUS_SCANNING, &priv->status);
1990                 return 0;
1991         }
1992
1993         if (test_bit(STATUS_SCANNING, &priv->status)) {
1994                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1995                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1996                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1997                         queue_work(priv->workqueue, &priv->abort_scan);
1998
1999                 } else
2000                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2001
2002                 return test_bit(STATUS_SCANNING, &priv->status);
2003         }
2004
2005         return 0;
2006 }
2007
2008 /**
2009  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2010  * @ms: amount of time to wait (in milliseconds) for scan to abort
2011  *
2012  * NOTE: priv->mutex must be held before calling this function
2013  */
2014 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2015 {
2016         unsigned long now = jiffies;
2017         int ret;
2018
2019         ret = iwl3945_scan_cancel(priv);
2020         if (ret && ms) {
2021                 mutex_unlock(&priv->mutex);
2022                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2023                                 test_bit(STATUS_SCANNING, &priv->status))
2024                         msleep(1);
2025                 mutex_lock(&priv->mutex);
2026
2027                 return test_bit(STATUS_SCANNING, &priv->status);
2028         }
2029
2030         return ret;
2031 }
2032
2033 #define MAX_UCODE_BEACON_INTERVAL       1024
2034 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2035
2036 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2037 {
2038         u16 new_val = 0;
2039         u16 beacon_factor = 0;
2040
2041         beacon_factor =
2042             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2043                 / MAX_UCODE_BEACON_INTERVAL;
2044         new_val = beacon_val / beacon_factor;
2045
2046         return cpu_to_le16(new_val);
2047 }
2048
2049 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2050 {
2051         u64 interval_tm_unit;
2052         u64 tsf, result;
2053         unsigned long flags;
2054         struct ieee80211_conf *conf = NULL;
2055         u16 beacon_int = 0;
2056
2057         conf = ieee80211_get_hw_conf(priv->hw);
2058
2059         spin_lock_irqsave(&priv->lock, flags);
2060         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
2061         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2062
2063         tsf = priv->timestamp;
2064
2065         beacon_int = priv->beacon_int;
2066         spin_unlock_irqrestore(&priv->lock, flags);
2067
2068         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
2069                 if (beacon_int == 0) {
2070                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2071                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2072                 } else {
2073                         priv->rxon_timing.beacon_interval =
2074                                 cpu_to_le16(beacon_int);
2075                         priv->rxon_timing.beacon_interval =
2076                             iwl3945_adjust_beacon_interval(
2077                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2078                 }
2079
2080                 priv->rxon_timing.atim_window = 0;
2081         } else {
2082                 priv->rxon_timing.beacon_interval =
2083                         iwl3945_adjust_beacon_interval(conf->beacon_int);
2084                 /* TODO: we need to get atim_window from upper stack
2085                  * for now we set to 0 */
2086                 priv->rxon_timing.atim_window = 0;
2087         }
2088
2089         interval_tm_unit =
2090                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2091         result = do_div(tsf, interval_tm_unit);
2092         priv->rxon_timing.beacon_init_val =
2093             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2094
2095         IWL_DEBUG_ASSOC
2096             ("beacon interval %d beacon timer %d beacon tim %d\n",
2097                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2098                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2099                 le16_to_cpu(priv->rxon_timing.atim_window));
2100 }
2101
2102 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2103 {
2104         if (!iwl3945_is_ready_rf(priv)) {
2105                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2106                 return -EIO;
2107         }
2108
2109         if (test_bit(STATUS_SCANNING, &priv->status)) {
2110                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2111                 return -EAGAIN;
2112         }
2113
2114         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2115                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2116                                "Queuing.\n");
2117                 return -EAGAIN;
2118         }
2119
2120         IWL_DEBUG_INFO("Starting scan...\n");
2121         if (priv->cfg->sku & IWL_SKU_G)
2122                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
2123         if (priv->cfg->sku & IWL_SKU_A)
2124                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
2125         set_bit(STATUS_SCANNING, &priv->status);
2126         priv->scan_start = jiffies;
2127         priv->scan_pass_start = priv->scan_start;
2128
2129         queue_work(priv->workqueue, &priv->request_scan);
2130
2131         return 0;
2132 }
2133
2134 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2135 {
2136         struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2137
2138         if (hw_decrypt)
2139                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2140         else
2141                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2142
2143         return 0;
2144 }
2145
2146 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
2147                                           enum ieee80211_band band)
2148 {
2149         if (band == IEEE80211_BAND_5GHZ) {
2150                 priv->staging_rxon.flags &=
2151                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2152                       | RXON_FLG_CCK_MSK);
2153                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2154         } else {
2155                 /* Copied from iwl3945_bg_post_associate() */
2156                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2157                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2158                 else
2159                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2160
2161                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2162                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2163
2164                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2165                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2166                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2167         }
2168 }
2169
2170 /*
2171  * initialize rxon structure with default values from eeprom
2172  */
2173 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv,
2174                                               int mode)
2175 {
2176         const struct iwl3945_channel_info *ch_info;
2177
2178         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2179
2180         switch (mode) {
2181         case NL80211_IFTYPE_AP:
2182                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2183                 break;
2184
2185         case NL80211_IFTYPE_STATION:
2186                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2187                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2188                 break;
2189
2190         case NL80211_IFTYPE_ADHOC:
2191                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2192                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2193                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2194                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2195                 break;
2196
2197         case NL80211_IFTYPE_MONITOR:
2198                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2199                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2200                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2201                 break;
2202         default:
2203                 IWL_ERROR("Unsupported interface type %d\n", mode);
2204                 break;
2205         }
2206
2207 #if 0
2208         /* TODO:  Figure out when short_preamble would be set and cache from
2209          * that */
2210         if (!hw_to_local(priv->hw)->short_preamble)
2211                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2212         else
2213                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2214 #endif
2215
2216         ch_info = iwl3945_get_channel_info(priv, priv->band,
2217                                        le16_to_cpu(priv->active_rxon.channel));
2218
2219         if (!ch_info)
2220                 ch_info = &priv->channel_info[0];
2221
2222         /*
2223          * in some case A channels are all non IBSS
2224          * in this case force B/G channel
2225          */
2226         if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
2227                 ch_info = &priv->channel_info[0];
2228
2229         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2230         if (is_channel_a_band(ch_info))
2231                 priv->band = IEEE80211_BAND_5GHZ;
2232         else
2233                 priv->band = IEEE80211_BAND_2GHZ;
2234
2235         iwl3945_set_flags_for_phymode(priv, priv->band);
2236
2237         priv->staging_rxon.ofdm_basic_rates =
2238             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2239         priv->staging_rxon.cck_basic_rates =
2240             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2241 }
2242
2243 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2244 {
2245         if (mode == NL80211_IFTYPE_ADHOC) {
2246                 const struct iwl3945_channel_info *ch_info;
2247
2248                 ch_info = iwl3945_get_channel_info(priv,
2249                         priv->band,
2250                         le16_to_cpu(priv->staging_rxon.channel));
2251
2252                 if (!ch_info || !is_channel_ibss(ch_info)) {
2253                         IWL_ERROR("channel %d not IBSS channel\n",
2254                                   le16_to_cpu(priv->staging_rxon.channel));
2255                         return -EINVAL;
2256                 }
2257         }
2258
2259         iwl3945_connection_init_rx_config(priv, mode);
2260         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2261
2262         iwl3945_clear_stations_table(priv);
2263
2264         /* don't commit rxon if rf-kill is on*/
2265         if (!iwl3945_is_ready_rf(priv))
2266                 return -EAGAIN;
2267
2268         cancel_delayed_work(&priv->scan_check);
2269         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2270                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2271                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2272                 return -EAGAIN;
2273         }
2274
2275         iwl3945_commit_rxon(priv);
2276
2277         return 0;
2278 }
2279
2280 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2281                                       struct ieee80211_tx_info *info,
2282                                       struct iwl3945_cmd *cmd,
2283                                       struct sk_buff *skb_frag,
2284                                       int last_frag)
2285 {
2286         struct iwl3945_hw_key *keyinfo =
2287             &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
2288
2289         switch (keyinfo->alg) {
2290         case ALG_CCMP:
2291                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2292                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2293                 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
2294                 break;
2295
2296         case ALG_TKIP:
2297 #if 0
2298                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2299
2300                 if (last_frag)
2301                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2302                                8);
2303                 else
2304                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2305 #endif
2306                 break;
2307
2308         case ALG_WEP:
2309                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2310                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2311
2312                 if (keyinfo->keylen == 13)
2313                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2314
2315                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2316
2317                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2318                              "with key %d\n", info->control.hw_key->hw_key_idx);
2319                 break;
2320
2321         default:
2322                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2323                 break;
2324         }
2325 }
2326
2327 /*
2328  * handle build REPLY_TX command notification.
2329  */
2330 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2331                                   struct iwl3945_cmd *cmd,
2332                                   struct ieee80211_tx_info *info,
2333                                   struct ieee80211_hdr *hdr,
2334                                   int is_unicast, u8 std_id)
2335 {
2336         __le16 fc = hdr->frame_control;
2337         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2338         u8 rc_flags = info->control.rates[0].flags;
2339
2340         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2341         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
2342                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2343                 if (ieee80211_is_mgmt(fc))
2344                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2345                 if (ieee80211_is_probe_resp(fc) &&
2346                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2347                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2348         } else {
2349                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2350                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2351         }
2352
2353         cmd->cmd.tx.sta_id = std_id;
2354         if (ieee80211_has_morefrags(fc))
2355                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2356
2357         if (ieee80211_is_data_qos(fc)) {
2358                 u8 *qc = ieee80211_get_qos_ctl(hdr);
2359                 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
2360                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2361         } else {
2362                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2363         }
2364
2365         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
2366                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2367                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2368         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
2369                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2370                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2371         }
2372
2373         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2374                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2375
2376         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2377         if (ieee80211_is_mgmt(fc)) {
2378                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2379                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2380                 else
2381                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2382         } else {
2383                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2384 #ifdef CONFIG_IWL3945_LEDS
2385                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2386 #endif
2387         }
2388
2389         cmd->cmd.tx.driver_txop = 0;
2390         cmd->cmd.tx.tx_flags = tx_flags;
2391         cmd->cmd.tx.next_frame_len = 0;
2392 }
2393
2394 /**
2395  * iwl3945_get_sta_id - Find station's index within station table
2396  */
2397 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2398 {
2399         int sta_id;
2400         u16 fc = le16_to_cpu(hdr->frame_control);
2401
2402         /* If this frame is broadcast or management, use broadcast station id */
2403         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2404             is_multicast_ether_addr(hdr->addr1))
2405                 return priv->hw_setting.bcast_sta_id;
2406
2407         switch (priv->iw_mode) {
2408
2409         /* If we are a client station in a BSS network, use the special
2410          * AP station entry (that's the only station we communicate with) */
2411         case NL80211_IFTYPE_STATION:
2412                 return IWL_AP_ID;
2413
2414         /* If we are an AP, then find the station, or use BCAST */
2415         case NL80211_IFTYPE_AP:
2416                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2417                 if (sta_id != IWL_INVALID_STATION)
2418                         return sta_id;
2419                 return priv->hw_setting.bcast_sta_id;
2420
2421         /* If this frame is going out to an IBSS network, find the station,
2422          * or create a new station table entry */
2423         case NL80211_IFTYPE_ADHOC: {
2424                 /* Create new station table entry */
2425                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2426                 if (sta_id != IWL_INVALID_STATION)
2427                         return sta_id;
2428
2429                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2430
2431                 if (sta_id != IWL_INVALID_STATION)
2432                         return sta_id;
2433
2434                 IWL_DEBUG_DROP("Station %pM not in station map. "
2435                                "Defaulting to broadcast...\n",
2436                                hdr->addr1);
2437                 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2438                 return priv->hw_setting.bcast_sta_id;
2439         }
2440         /* If we are in monitor mode, use BCAST. This is required for
2441          * packet injection. */
2442         case NL80211_IFTYPE_MONITOR:
2443                 return priv->hw_setting.bcast_sta_id;
2444
2445         default:
2446                 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
2447                 return priv->hw_setting.bcast_sta_id;
2448         }
2449 }
2450
2451 /*
2452  * start REPLY_TX command process
2453  */
2454 static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
2455 {
2456         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2457         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2458         struct iwl3945_tfd_frame *tfd;
2459         u32 *control_flags;
2460         int txq_id = skb_get_queue_mapping(skb);
2461         struct iwl3945_tx_queue *txq = NULL;
2462         struct iwl3945_queue *q = NULL;
2463         dma_addr_t phys_addr;
2464         dma_addr_t txcmd_phys;
2465         struct iwl3945_cmd *out_cmd = NULL;
2466         u16 len, idx, len_org, hdr_len;
2467         u8 id;
2468         u8 unicast;
2469         u8 sta_id;
2470         u8 tid = 0;
2471         u16 seq_number = 0;
2472         __le16 fc;
2473         u8 wait_write_ptr = 0;
2474         u8 *qc = NULL;
2475         unsigned long flags;
2476         int rc;
2477
2478         spin_lock_irqsave(&priv->lock, flags);
2479         if (iwl3945_is_rfkill(priv)) {
2480                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2481                 goto drop_unlock;
2482         }
2483
2484         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2485                 IWL_ERROR("ERROR: No TX rate available.\n");
2486                 goto drop_unlock;
2487         }
2488
2489         unicast = !is_multicast_ether_addr(hdr->addr1);
2490         id = 0;
2491
2492         fc = hdr->frame_control;
2493
2494 #ifdef CONFIG_IWL3945_DEBUG
2495         if (ieee80211_is_auth(fc))
2496                 IWL_DEBUG_TX("Sending AUTH frame\n");
2497         else if (ieee80211_is_assoc_req(fc))
2498                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2499         else if (ieee80211_is_reassoc_req(fc))
2500                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2501 #endif
2502
2503         /* drop all data frame if we are not associated */
2504         if (ieee80211_is_data(fc) &&
2505             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2506             (!iwl3945_is_associated(priv) ||
2507              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
2508                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2509                 goto drop_unlock;
2510         }
2511
2512         spin_unlock_irqrestore(&priv->lock, flags);
2513
2514         hdr_len = ieee80211_hdrlen(fc);
2515
2516         /* Find (or create) index into station table for destination station */
2517         sta_id = iwl3945_get_sta_id(priv, hdr);
2518         if (sta_id == IWL_INVALID_STATION) {
2519                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
2520                                hdr->addr1);
2521                 goto drop;
2522         }
2523
2524         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2525
2526         if (ieee80211_is_data_qos(fc)) {
2527                 qc = ieee80211_get_qos_ctl(hdr);
2528                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
2529                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2530                                 IEEE80211_SCTL_SEQ;
2531                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2532                         (hdr->seq_ctrl &
2533                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2534                 seq_number += 0x10;
2535         }
2536
2537         /* Descriptor for chosen Tx queue */
2538         txq = &priv->txq[txq_id];
2539         q = &txq->q;
2540
2541         spin_lock_irqsave(&priv->lock, flags);
2542
2543         /* Set up first empty TFD within this queue's circular TFD buffer */
2544         tfd = &txq->bd[q->write_ptr];
2545         memset(tfd, 0, sizeof(*tfd));
2546         control_flags = (u32 *) tfd;
2547         idx = get_cmd_index(q, q->write_ptr, 0);
2548
2549         /* Set up driver data for this TFD */
2550         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2551         txq->txb[q->write_ptr].skb[0] = skb;
2552
2553         /* Init first empty entry in queue's array of Tx/cmd buffers */
2554         out_cmd = &txq->cmd[idx];
2555         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2556         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2557
2558         /*
2559          * Set up the Tx-command (not MAC!) header.
2560          * Store the chosen Tx queue and TFD index within the sequence field;
2561          * after Tx, uCode's Tx response will return this value so driver can
2562          * locate the frame within the tx queue and do post-tx processing.
2563          */
2564         out_cmd->hdr.cmd = REPLY_TX;
2565         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2566                                 INDEX_TO_SEQ(q->write_ptr)));
2567
2568         /* Copy MAC header from skb into command buffer */
2569         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2570
2571         /*
2572          * Use the first empty entry in this queue's command buffer array
2573          * to contain the Tx command and MAC header concatenated together
2574          * (payload data will be in another buffer).
2575          * Size of this varies, due to varying MAC header length.
2576          * If end is not dword aligned, we'll have 2 extra bytes at the end
2577          * of the MAC header (device reads on dword boundaries).
2578          * We'll tell device about this padding later.
2579          */
2580         len = priv->hw_setting.tx_cmd_len +
2581                         sizeof(struct iwl_cmd_header) + hdr_len;
2582
2583         len_org = len;
2584         len = (len + 3) & ~3;
2585
2586         if (len_org != len)
2587                 len_org = 1;
2588         else
2589                 len_org = 0;
2590
2591         /* Physical address of this Tx command's header (not MAC header!),
2592          * within command buffer array. */
2593         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2594                      offsetof(struct iwl3945_cmd, hdr);
2595
2596         /* Add buffer containing Tx command and MAC(!) header to TFD's
2597          * first entry */
2598         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2599
2600         if (info->control.hw_key)
2601                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2602
2603         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2604          * if any (802.11 null frames have no payload). */
2605         len = skb->len - hdr_len;
2606         if (len) {
2607                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2608                                            len, PCI_DMA_TODEVICE);
2609                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2610         }
2611
2612         if (!len)
2613                 /* If there is no payload, then we use only one Tx buffer */
2614                 *control_flags = TFD_CTL_COUNT_SET(1);
2615         else
2616                 /* Else use 2 buffers.
2617                  * Tell 3945 about any padding after MAC header */
2618                 *control_flags = TFD_CTL_COUNT_SET(2) |
2619                         TFD_CTL_PAD_SET(U32_PAD(len));
2620
2621         /* Total # bytes to be transmitted */
2622         len = (u16)skb->len;
2623         out_cmd->cmd.tx.len = cpu_to_le16(len);
2624
2625         /* TODO need this for burst mode later on */
2626         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
2627
2628         /* set is_hcca to 0; it probably will never be implemented */
2629         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2630
2631         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2632         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2633
2634         if (!ieee80211_has_morefrags(hdr->frame_control)) {
2635                 txq->need_update = 1;
2636                 if (qc)
2637                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2638         } else {
2639                 wait_write_ptr = 1;
2640                 txq->need_update = 0;
2641         }
2642
2643         iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2644                            sizeof(out_cmd->cmd.tx));
2645
2646         iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2647                            ieee80211_hdrlen(fc));
2648
2649         /* Tell device the write index *just past* this latest filled TFD */
2650         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2651         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2652         spin_unlock_irqrestore(&priv->lock, flags);
2653
2654         if (rc)
2655                 return rc;
2656
2657         if ((iwl3945_queue_space(q) < q->high_mark)
2658             && priv->mac80211_registered) {
2659                 if (wait_write_ptr) {
2660                         spin_lock_irqsave(&priv->lock, flags);
2661                         txq->need_update = 1;
2662                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2663                         spin_unlock_irqrestore(&priv->lock, flags);
2664                 }
2665
2666                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2667         }
2668
2669         return 0;
2670
2671 drop_unlock:
2672         spin_unlock_irqrestore(&priv->lock, flags);
2673 drop:
2674         return -1;
2675 }
2676
2677 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2678 {
2679         const struct ieee80211_supported_band *sband = NULL;
2680         struct ieee80211_rate *rate;
2681         int i;
2682
2683         sband = iwl3945_get_band(priv, priv->band);
2684         if (!sband) {
2685                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2686                 return;
2687         }
2688
2689         priv->active_rate = 0;
2690         priv->active_rate_basic = 0;
2691
2692         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2693                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2694
2695         for (i = 0; i < sband->n_bitrates; i++) {
2696                 rate = &sband->bitrates[i];
2697                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2698                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2699                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2700                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2701                         priv->active_rate |= (1 << rate->hw_value);
2702                 }
2703         }
2704
2705         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2706                        priv->active_rate, priv->active_rate_basic);
2707
2708         /*
2709          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2710          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2711          * OFDM
2712          */
2713         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2714                 priv->staging_rxon.cck_basic_rates =
2715                     ((priv->active_rate_basic &
2716                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2717         else
2718                 priv->staging_rxon.cck_basic_rates =
2719                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2720
2721         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2722                 priv->staging_rxon.ofdm_basic_rates =
2723                     ((priv->active_rate_basic &
2724                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2725                       IWL_FIRST_OFDM_RATE) & 0xFF;
2726         else
2727                 priv->staging_rxon.ofdm_basic_rates =
2728                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2729 }
2730
2731 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
2732 {
2733         unsigned long flags;
2734
2735         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2736                 return;
2737
2738         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2739                           disable_radio ? "OFF" : "ON");
2740
2741         if (disable_radio) {
2742                 iwl3945_scan_cancel(priv);
2743                 /* FIXME: This is a workaround for AP */
2744                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2745                         spin_lock_irqsave(&priv->lock, flags);
2746                         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
2747                                     CSR_UCODE_SW_BIT_RFKILL);
2748                         spin_unlock_irqrestore(&priv->lock, flags);
2749                         iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2750                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2751                 }
2752                 return;
2753         }
2754
2755         spin_lock_irqsave(&priv->lock, flags);
2756         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2757
2758         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2759         spin_unlock_irqrestore(&priv->lock, flags);
2760
2761         /* wake up ucode */
2762         msleep(10);
2763
2764         spin_lock_irqsave(&priv->lock, flags);
2765         iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
2766         if (!iwl3945_grab_nic_access(priv))
2767                 iwl3945_release_nic_access(priv);
2768         spin_unlock_irqrestore(&priv->lock, flags);
2769
2770         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2771                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2772                                   "disabled by HW switch\n");
2773                 return;
2774         }
2775
2776         if (priv->is_open)
2777                 queue_work(priv->workqueue, &priv->restart);
2778         return;
2779 }
2780
2781 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
2782                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2783 {
2784         u16 fc =
2785             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2786
2787         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2788                 return;
2789
2790         if (!(fc & IEEE80211_FCTL_PROTECTED))
2791                 return;
2792
2793         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2794         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2795         case RX_RES_STATUS_SEC_TYPE_TKIP:
2796                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2797                     RX_RES_STATUS_BAD_ICV_MIC)
2798                         stats->flag |= RX_FLAG_MMIC_ERROR;
2799         case RX_RES_STATUS_SEC_TYPE_WEP:
2800         case RX_RES_STATUS_SEC_TYPE_CCMP:
2801                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2802                     RX_RES_STATUS_DECRYPT_OK) {
2803                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2804                         stats->flag |= RX_FLAG_DECRYPTED;
2805                 }
2806                 break;
2807
2808         default:
2809                 break;
2810         }
2811 }
2812
2813 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2814
2815 #include "iwl-spectrum.h"
2816
2817 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2818 #define BEACON_TIME_MASK_HIGH   0xFF000000
2819 #define TIME_UNIT               1024
2820
2821 /*
2822  * extended beacon time format
2823  * time in usec will be changed into a 32-bit value in 8:24 format
2824  * the high 1 byte is the beacon counts
2825  * the lower 3 bytes is the time in usec within one beacon interval
2826  */
2827
2828 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2829 {
2830         u32 quot;
2831         u32 rem;
2832         u32 interval = beacon_interval * 1024;
2833
2834         if (!interval || !usec)
2835                 return 0;
2836
2837         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2838         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2839
2840         return (quot << 24) + rem;
2841 }
2842
2843 /* base is usually what we get from ucode with each received frame,
2844  * the same as HW timer counter counting down
2845  */
2846
2847 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2848 {
2849         u32 base_low = base & BEACON_TIME_MASK_LOW;
2850         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2851         u32 interval = beacon_interval * TIME_UNIT;
2852         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2853             (addon & BEACON_TIME_MASK_HIGH);
2854
2855         if (base_low > addon_low)
2856                 res += base_low - addon_low;
2857         else if (base_low < addon_low) {
2858                 res += interval + base_low - addon_low;
2859                 res += (1 << 24);
2860         } else
2861                 res += (1 << 24);
2862
2863         return cpu_to_le32(res);
2864 }
2865
2866 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
2867                                struct ieee80211_measurement_params *params,
2868                                u8 type)
2869 {
2870         struct iwl_spectrum_cmd spectrum;
2871         struct iwl_rx_packet *res;
2872         struct iwl3945_host_cmd cmd = {
2873                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2874                 .data = (void *)&spectrum,
2875                 .meta.flags = CMD_WANT_SKB,
2876         };
2877         u32 add_time = le64_to_cpu(params->start_time);
2878         int rc;
2879         int spectrum_resp_status;
2880         int duration = le16_to_cpu(params->duration);
2881
2882         if (iwl3945_is_associated(priv))
2883                 add_time =
2884                     iwl3945_usecs_to_beacons(
2885                         le64_to_cpu(params->start_time) - priv->last_tsf,
2886                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2887
2888         memset(&spectrum, 0, sizeof(spectrum));
2889
2890         spectrum.channel_count = cpu_to_le16(1);
2891         spectrum.flags =
2892             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2893         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2894         cmd.len = sizeof(spectrum);
2895         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2896
2897         if (iwl3945_is_associated(priv))
2898                 spectrum.start_time =
2899                     iwl3945_add_beacon_time(priv->last_beacon_time,
2900                                 add_time,
2901                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2902         else
2903                 spectrum.start_time = 0;
2904
2905         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2906         spectrum.channels[0].channel = params->channel;
2907         spectrum.channels[0].type = type;
2908         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2909                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2910                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2911
2912         rc = iwl3945_send_cmd_sync(priv, &cmd);
2913         if (rc)
2914                 return rc;
2915
2916         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2917         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2918                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2919                 rc = -EIO;
2920         }
2921
2922         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2923         switch (spectrum_resp_status) {
2924         case 0:         /* Command will be handled */
2925                 if (res->u.spectrum.id != 0xff) {
2926                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2927                                                 res->u.spectrum.id);
2928                         priv->measurement_status &= ~MEASUREMENT_READY;
2929                 }
2930                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2931                 rc = 0;
2932                 break;
2933
2934         case 1:         /* Command will not be handled */
2935                 rc = -EAGAIN;
2936                 break;
2937         }
2938
2939         dev_kfree_skb_any(cmd.meta.u.skb);
2940
2941         return rc;
2942 }
2943 #endif
2944
2945 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
2946                                struct iwl3945_rx_mem_buffer *rxb)
2947 {
2948         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2949         struct iwl_alive_resp *palive;
2950         struct delayed_work *pwork;
2951
2952         palive = &pkt->u.alive_frame;
2953
2954         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2955                        "0x%01X 0x%01X\n",
2956                        palive->is_valid, palive->ver_type,
2957                        palive->ver_subtype);
2958
2959         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2960                 IWL_DEBUG_INFO("Initialization Alive received.\n");
2961                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
2962                        sizeof(struct iwl_alive_resp));
2963                 pwork = &priv->init_alive_start;
2964         } else {
2965                 IWL_DEBUG_INFO("Runtime Alive received.\n");
2966                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2967                        sizeof(struct iwl_alive_resp));
2968                 pwork = &priv->alive_start;
2969                 iwl3945_disable_events(priv);
2970         }
2971
2972         /* We delay the ALIVE response by 5ms to
2973          * give the HW RF Kill time to activate... */
2974         if (palive->is_valid == UCODE_VALID_OK)
2975                 queue_delayed_work(priv->workqueue, pwork,
2976                                    msecs_to_jiffies(5));
2977         else
2978                 IWL_WARNING("uCode did not respond OK.\n");
2979 }
2980
2981 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
2982                                  struct iwl3945_rx_mem_buffer *rxb)
2983 {
2984         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2985
2986         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2987         return;
2988 }
2989
2990 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
2991                                struct iwl3945_rx_mem_buffer *rxb)
2992 {
2993         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2994
2995         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2996                 "seq 0x%04X ser 0x%08X\n",
2997                 le32_to_cpu(pkt->u.err_resp.error_type),
2998                 get_cmd_string(pkt->u.err_resp.cmd_id),
2999                 pkt->u.err_resp.cmd_id,
3000                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3001                 le32_to_cpu(pkt->u.err_resp.error_info));
3002 }
3003
3004 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3005
3006 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3007 {
3008         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3009         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3010         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
3011         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3012                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3013         rxon->channel = csa->channel;
3014         priv->staging_rxon.channel = csa->channel;
3015 }
3016
3017 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3018                                           struct iwl3945_rx_mem_buffer *rxb)
3019 {
3020 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3021         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3022         struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
3023
3024         if (!report->state) {
3025                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3026                           "Spectrum Measure Notification: Start\n");
3027                 return;
3028         }
3029
3030         memcpy(&priv->measure_report, report, sizeof(*report));
3031         priv->measurement_status |= MEASUREMENT_READY;
3032 #endif
3033 }
3034
3035 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3036                                   struct iwl3945_rx_mem_buffer *rxb)
3037 {
3038 #ifdef CONFIG_IWL3945_DEBUG
3039         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3040         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
3041         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3042                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3043 #endif
3044 }
3045
3046 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3047                                              struct iwl3945_rx_mem_buffer *rxb)
3048 {
3049         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3050         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3051                         "notification for %s:\n",
3052                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3053         iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3054 }
3055
3056 static void iwl3945_bg_beacon_update(struct work_struct *work)
3057 {
3058         struct iwl3945_priv *priv =
3059                 container_of(work, struct iwl3945_priv, beacon_update);
3060         struct sk_buff *beacon;
3061
3062         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3063         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
3064
3065         if (!beacon) {
3066                 IWL_ERROR("update beacon failed\n");
3067                 return;
3068         }
3069
3070         mutex_lock(&priv->mutex);
3071         /* new beacon skb is allocated every time; dispose previous.*/
3072         if (priv->ibss_beacon)
3073                 dev_kfree_skb(priv->ibss_beacon);
3074
3075         priv->ibss_beacon = beacon;
3076         mutex_unlock(&priv->mutex);
3077
3078         iwl3945_send_beacon_cmd(priv);
3079 }
3080
3081 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3082                                 struct iwl3945_rx_mem_buffer *rxb)
3083 {
3084 #ifdef CONFIG_IWL3945_DEBUG
3085         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3086         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3087         u8 rate = beacon->beacon_notify_hdr.rate;
3088
3089         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3090                 "tsf %d %d rate %d\n",
3091                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3092                 beacon->beacon_notify_hdr.failure_frame,
3093                 le32_to_cpu(beacon->ibss_mgr_status),
3094                 le32_to_cpu(beacon->high_tsf),
3095                 le32_to_cpu(beacon->low_tsf), rate);
3096 #endif
3097
3098         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
3099             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3100                 queue_work(priv->workqueue, &priv->beacon_update);
3101 }
3102
3103 /* Service response to REPLY_SCAN_CMD (0x80) */
3104 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3105                               struct iwl3945_rx_mem_buffer *rxb)
3106 {
3107 #ifdef CONFIG_IWL3945_DEBUG
3108         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3109         struct iwl_scanreq_notification *notif =
3110             (struct iwl_scanreq_notification *)pkt->u.raw;
3111
3112         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3113 #endif
3114 }
3115
3116 /* Service SCAN_START_NOTIFICATION (0x82) */
3117 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3118                                     struct iwl3945_rx_mem_buffer *rxb)
3119 {
3120         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3121         struct iwl_scanstart_notification *notif =
3122             (struct iwl_scanstart_notification *)pkt->u.raw;
3123         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3124         IWL_DEBUG_SCAN("Scan start: "
3125                        "%d [802.11%s] "
3126                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3127                        notif->channel,
3128                        notif->band ? "bg" : "a",
3129                        notif->tsf_high,
3130                        notif->tsf_low, notif->status, notif->beacon_timer);
3131 }
3132
3133 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3134 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3135                                       struct iwl3945_rx_mem_buffer *rxb)
3136 {
3137         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3138         struct iwl_scanresults_notification *notif =
3139             (struct iwl_scanresults_notification *)pkt->u.raw;
3140
3141         IWL_DEBUG_SCAN("Scan ch.res: "
3142                        "%d [802.11%s] "
3143                        "(TSF: 0x%08X:%08X) - %d "
3144                        "elapsed=%lu usec (%dms since last)\n",
3145                        notif->channel,
3146                        notif->band ? "bg" : "a",
3147                        le32_to_cpu(notif->tsf_high),
3148                        le32_to_cpu(notif->tsf_low),
3149                        le32_to_cpu(notif->statistics[0]),
3150                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3151                        jiffies_to_msecs(elapsed_jiffies
3152                                         (priv->last_scan_jiffies, jiffies)));
3153
3154         priv->last_scan_jiffies = jiffies;
3155         priv->next_scan_jiffies = 0;
3156 }
3157
3158 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3159 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3160                                        struct iwl3945_rx_mem_buffer *rxb)
3161 {
3162         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3163         struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3164
3165         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3166                        scan_notif->scanned_channels,
3167                        scan_notif->tsf_low,
3168                        scan_notif->tsf_high, scan_notif->status);
3169
3170         /* The HW is no longer scanning */
3171         clear_bit(STATUS_SCAN_HW, &priv->status);
3172
3173         /* The scan completion notification came in, so kill that timer... */
3174         cancel_delayed_work(&priv->scan_check);
3175
3176         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3177                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3178                                                         "2.4" : "5.2",
3179                        jiffies_to_msecs(elapsed_jiffies
3180                                         (priv->scan_pass_start, jiffies)));
3181
3182         /* Remove this scanned band from the list of pending
3183          * bands to scan, band G precedes A in order of scanning
3184          * as seen in iwl3945_bg_request_scan */
3185         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3186                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3187         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
3188                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
3189
3190         /* If a request to abort was given, or the scan did not succeed
3191          * then we reset the scan state machine and terminate,
3192          * re-queuing another scan if one has been requested */
3193         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3194                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3195                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3196         } else {
3197                 /* If there are more bands on this scan pass reschedule */
3198                 if (priv->scan_bands > 0)
3199                         goto reschedule;
3200         }
3201
3202         priv->last_scan_jiffies = jiffies;
3203         priv->next_scan_jiffies = 0;
3204         IWL_DEBUG_INFO("Setting scan to off\n");
3205
3206         clear_bit(STATUS_SCANNING, &priv->status);
3207
3208         IWL_DEBUG_INFO("Scan took %dms\n",
3209                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3210
3211         queue_work(priv->workqueue, &priv->scan_completed);
3212
3213         return;
3214
3215 reschedule:
3216         priv->scan_pass_start = jiffies;
3217         queue_work(priv->workqueue, &priv->request_scan);
3218 }
3219
3220 /* Handle notification from uCode that card's power state is changing
3221  * due to software, hardware, or critical temperature RFKILL */
3222 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3223                                     struct iwl3945_rx_mem_buffer *rxb)
3224 {
3225         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3226         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3227         unsigned long status = priv->status;
3228
3229         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3230                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3231                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3232
3233         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3234                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3235
3236         if (flags & HW_CARD_DISABLED)
3237                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3238         else
3239                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3240
3241
3242         if (flags & SW_CARD_DISABLED)
3243                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3244         else
3245                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3246
3247         iwl3945_scan_cancel(priv);
3248
3249         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3250              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3251             (test_bit(STATUS_RF_KILL_SW, &status) !=
3252              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3253                 queue_work(priv->workqueue, &priv->rf_kill);
3254         else
3255                 wake_up_interruptible(&priv->wait_command_queue);
3256 }
3257
3258 /**
3259  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3260  *
3261  * Setup the RX handlers for each of the reply types sent from the uCode
3262  * to the host.
3263  *
3264  * This function chains into the hardware specific files for them to setup
3265  * any hardware specific handlers as well.
3266  */
3267 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3268 {
3269         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3270         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3271         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3272         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3273         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3274             iwl3945_rx_spectrum_measure_notif;
3275         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3276         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3277             iwl3945_rx_pm_debug_statistics_notif;
3278         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3279
3280         /*
3281          * The same handler is used for both the REPLY to a discrete
3282          * statistics request from the host as well as for the periodic
3283          * statistics notifications (after received beacons) from the uCode.
3284          */
3285         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3286         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3287
3288         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3289         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3290         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3291             iwl3945_rx_scan_results_notif;
3292         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3293             iwl3945_rx_scan_complete_notif;
3294         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3295
3296         /* Set up hardware specific Rx handlers */
3297         iwl3945_hw_rx_handler_setup(priv);
3298 }
3299
3300 /**
3301  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3302  * When FW advances 'R' index, all entries between old and new 'R' index
3303  * need to be reclaimed.
3304  */
3305 static void iwl3945_cmd_queue_reclaim(struct iwl3945_priv *priv,
3306                                       int txq_id, int index)
3307 {
3308         struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3309         struct iwl3945_queue *q = &txq->q;
3310         int nfreed = 0;
3311
3312         if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3313                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3314                           "is out of range [0-%d] %d %d.\n", txq_id,
3315                           index, q->n_bd, q->write_ptr, q->read_ptr);
3316                 return;
3317         }
3318
3319         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3320                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3321                 if (nfreed > 1) {
3322                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3323                                         q->write_ptr, q->read_ptr);
3324                         queue_work(priv->workqueue, &priv->restart);
3325                         break;
3326                 }
3327                 nfreed++;
3328         }
3329 }
3330
3331
3332 /**
3333  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3334  * @rxb: Rx buffer to reclaim
3335  *
3336  * If an Rx buffer has an async callback associated with it the callback
3337  * will be executed.  The attached skb (if present) will only be freed
3338  * if the callback returns 1
3339  */
3340 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3341                                 struct iwl3945_rx_mem_buffer *rxb)
3342 {
3343         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3344         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3345         int txq_id = SEQ_TO_QUEUE(sequence);
3346         int index = SEQ_TO_INDEX(sequence);
3347         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
3348         int cmd_index;
3349         struct iwl3945_cmd *cmd;
3350
3351         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3352
3353         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3354         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3355
3356         /* Input error checking is done when commands are added to queue. */
3357         if (cmd->meta.flags & CMD_WANT_SKB) {
3358                 cmd->meta.source->u.skb = rxb->skb;
3359                 rxb->skb = NULL;
3360         } else if (cmd->meta.u.callback &&
3361                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3362                 rxb->skb = NULL;
3363
3364         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
3365
3366         if (!(cmd->meta.flags & CMD_ASYNC)) {
3367                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3368                 wake_up_interruptible(&priv->wait_command_queue);
3369         }
3370 }
3371
3372 /************************** RX-FUNCTIONS ****************************/
3373 /*
3374  * Rx theory of operation
3375  *
3376  * The host allocates 32 DMA target addresses and passes the host address
3377  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3378  * 0 to 31
3379  *
3380  * Rx Queue Indexes
3381  * The host/firmware share two index registers for managing the Rx buffers.
3382  *
3383  * The READ index maps to the first position that the firmware may be writing
3384  * to -- the driver can read up to (but not including) this position and get
3385  * good data.
3386  * The READ index is managed by the firmware once the card is enabled.
3387  *
3388  * The WRITE index maps to the last position the driver has read from -- the
3389  * position preceding WRITE is the last slot the firmware can place a packet.
3390  *
3391  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3392  * WRITE = READ.
3393  *
3394  * During initialization, the host sets up the READ queue position to the first
3395  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3396  *
3397  * When the firmware places a packet in a buffer, it will advance the READ index
3398  * and fire the RX interrupt.  The driver can then query the READ index and
3399  * process as many packets as possible, moving the WRITE index forward as it
3400  * resets the Rx queue buffers with new memory.
3401  *
3402  * The management in the driver is as follows:
3403  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3404  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3405  *   to replenish the iwl->rxq->rx_free.
3406  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3407  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3408  *   'processed' and 'read' driver indexes as well)
3409  * + A received packet is processed and handed to the kernel network stack,
3410  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3411  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3412  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3413  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3414  *   were enough free buffers and RX_STALLED is set it is cleared.
3415  *
3416  *
3417  * Driver sequence:
3418  *
3419  * iwl3945_rx_queue_alloc()   Allocates rx_free
3420  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3421  *                            iwl3945_rx_queue_restock
3422  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3423  *                            queue, updates firmware pointers, and updates
3424  *                            the WRITE index.  If insufficient rx_free buffers
3425  *                            are available, schedules iwl3945_rx_replenish
3426  *
3427  * -- enable interrupts --
3428  * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
3429  *                            READ INDEX, detaching the SKB from the pool.
3430  *                            Moves the packet buffer from queue to rx_used.
3431  *                            Calls iwl3945_rx_queue_restock to refill any empty
3432  *                            slots.
3433  * ...
3434  *
3435  */
3436
3437 /**
3438  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3439  */
3440 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3441 {
3442         int s = q->read - q->write;
3443         if (s <= 0)
3444                 s += RX_QUEUE_SIZE;
3445         /* keep some buffer to not confuse full and empty queue */
3446         s -= 2;
3447         if (s < 0)
3448                 s = 0;
3449         return s;
3450 }
3451
3452 /**
3453  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3454  */
3455 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
3456 {
3457         u32 reg = 0;
3458         int rc = 0;
3459         unsigned long flags;
3460
3461         spin_lock_irqsave(&q->lock, flags);
3462
3463         if (q->need_update == 0)
3464                 goto exit_unlock;
3465
3466         /* If power-saving is in use, make sure device is awake */
3467         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3468                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3469
3470                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3471                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
3472                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3473                         goto exit_unlock;
3474                 }
3475
3476                 rc = iwl3945_grab_nic_access(priv);
3477                 if (rc)
3478                         goto exit_unlock;
3479
3480                 /* Device expects a multiple of 8 */
3481                 iwl3945_write_direct32(priv, FH39_RSCSR_CHNL0_WPTR,
3482                                      q->write & ~0x7);
3483                 iwl3945_release_nic_access(priv);
3484
3485         /* Else device is assumed to be awake */
3486         } else
3487                 /* Device expects a multiple of 8 */
3488                 iwl3945_write32(priv, FH39_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3489
3490
3491         q->need_update = 0;
3492
3493  exit_unlock:
3494         spin_unlock_irqrestore(&q->lock, flags);
3495         return rc;
3496 }
3497
3498 /**
3499  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3500  */
3501 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
3502                                           dma_addr_t dma_addr)
3503 {
3504         return cpu_to_le32((u32)dma_addr);
3505 }
3506
3507 /**
3508  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3509  *
3510  * If there are slots in the RX queue that need to be restocked,
3511  * and we have free pre-allocated buffers, fill the ranks as much
3512  * as we can, pulling from rx_free.
3513  *
3514  * This moves the 'write' index forward to catch up with 'processed', and
3515  * also updates the memory address in the firmware to reference the new
3516  * target buffer.
3517  */
3518 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
3519 {
3520         struct iwl3945_rx_queue *rxq = &priv->rxq;
3521         struct list_head *element;
3522         struct iwl3945_rx_mem_buffer *rxb;
3523         unsigned long flags;
3524         int write, rc;
3525
3526         spin_lock_irqsave(&rxq->lock, flags);
3527         write = rxq->write & ~0x7;
3528         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3529                 /* Get next free Rx buffer, remove from free list */
3530                 element = rxq->rx_free.next;
3531                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3532                 list_del(element);
3533
3534                 /* Point to Rx buffer via next RBD in circular buffer */
3535                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3536                 rxq->queue[rxq->write] = rxb;
3537                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3538                 rxq->free_count--;
3539         }
3540         spin_unlock_irqrestore(&rxq->lock, flags);
3541         /* If the pre-allocated buffer pool is dropping low, schedule to
3542          * refill it */
3543         if (rxq->free_count <= RX_LOW_WATERMARK)
3544                 queue_work(priv->workqueue, &priv->rx_replenish);
3545
3546
3547         /* If we've added more space for the firmware to place data, tell it.
3548          * Increment device's write pointer in multiples of 8. */
3549         if ((write != (rxq->write & ~0x7))
3550             || (abs(rxq->write - rxq->read) > 7)) {
3551                 spin_lock_irqsave(&rxq->lock, flags);
3552                 rxq->need_update = 1;
3553                 spin_unlock_irqrestore(&rxq->lock, flags);
3554                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3555                 if (rc)
3556                         return rc;
3557         }
3558
3559         return 0;
3560 }
3561
3562 /**
3563  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3564  *
3565  * When moving to rx_free an SKB is allocated for the slot.
3566  *
3567  * Also restock the Rx queue via iwl3945_rx_queue_restock.
3568  * This is called as a scheduled work item (except for during initialization)
3569  */
3570 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
3571 {
3572         struct iwl3945_rx_queue *rxq = &priv->rxq;
3573         struct list_head *element;
3574         struct iwl3945_rx_mem_buffer *rxb;
3575         unsigned long flags;
3576         spin_lock_irqsave(&rxq->lock, flags);
3577         while (!list_empty(&rxq->rx_used)) {
3578                 element = rxq->rx_used.next;
3579                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3580
3581                 /* Alloc a new receive buffer */
3582                 rxb->skb =
3583                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3584                 if (!rxb->skb) {
3585                         if (net_ratelimit())
3586                                 printk(KERN_CRIT DRV_NAME
3587                                        ": Can not allocate SKB buffers\n");
3588                         /* We don't reschedule replenish work here -- we will
3589                          * call the restock method and if it still needs
3590                          * more buffers it will schedule replenish */
3591                         break;
3592                 }
3593
3594                 /* If radiotap head is required, reserve some headroom here.
3595                  * The physical head count is a variable rx_stats->phy_count.
3596                  * We reserve 4 bytes here. Plus these extra bytes, the
3597                  * headroom of the physical head should be enough for the
3598                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3599                  */
3600                 skb_reserve(rxb->skb, 4);
3601
3602                 priv->alloc_rxb_skb++;
3603                 list_del(element);
3604
3605                 /* Get physical address of RB/SKB */
3606                 rxb->dma_addr =
3607                     pci_map_single(priv->pci_dev, rxb->skb->data,
3608                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3609                 list_add_tail(&rxb->list, &rxq->rx_free);
3610                 rxq->free_count++;
3611         }
3612         spin_unlock_irqrestore(&rxq->lock, flags);
3613 }
3614
3615 /*
3616  * this should be called while priv->lock is locked
3617  */
3618 static void __iwl3945_rx_replenish(void *data)
3619 {
3620         struct iwl3945_priv *priv = data;
3621
3622         iwl3945_rx_allocate(priv);
3623         iwl3945_rx_queue_restock(priv);
3624 }
3625
3626
3627 void iwl3945_rx_replenish(void *data)
3628 {
3629         struct iwl3945_priv *priv = data;
3630         unsigned long flags;
3631
3632         iwl3945_rx_allocate(priv);
3633
3634         spin_lock_irqsave(&priv->lock, flags);
3635         iwl3945_rx_queue_restock(priv);
3636         spin_unlock_irqrestore(&priv->lock, flags);
3637 }
3638
3639 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3640  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3641  * This free routine walks the list of POOL entries and if SKB is set to
3642  * non NULL it is unmapped and freed
3643  */
3644 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3645 {
3646         int i;
3647         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3648                 if (rxq->pool[i].skb != NULL) {
3649                         pci_unmap_single(priv->pci_dev,
3650                                          rxq->pool[i].dma_addr,
3651                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3652                         dev_kfree_skb(rxq->pool[i].skb);
3653                 }
3654         }
3655
3656         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3657                             rxq->dma_addr);
3658         rxq->bd = NULL;
3659 }
3660
3661 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
3662 {
3663         struct iwl3945_rx_queue *rxq = &priv->rxq;
3664         struct pci_dev *dev = priv->pci_dev;
3665         int i;
3666
3667         spin_lock_init(&rxq->lock);
3668         INIT_LIST_HEAD(&rxq->rx_free);
3669         INIT_LIST_HEAD(&rxq->rx_used);
3670
3671         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3672         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3673         if (!rxq->bd)
3674                 return -ENOMEM;
3675
3676         /* Fill the rx_used queue with _all_ of the Rx buffers */
3677         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3678                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3679
3680         /* Set us so that we have processed and used all buffers, but have
3681          * not restocked the Rx queue with fresh buffers */
3682         rxq->read = rxq->write = 0;
3683         rxq->free_count = 0;
3684         rxq->need_update = 0;
3685         return 0;
3686 }
3687
3688 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3689 {
3690         unsigned long flags;
3691         int i;
3692         spin_lock_irqsave(&rxq->lock, flags);
3693         INIT_LIST_HEAD(&rxq->rx_free);
3694         INIT_LIST_HEAD(&rxq->rx_used);
3695         /* Fill the rx_used queue with _all_ of the Rx buffers */
3696         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3697                 /* In the reset function, these buffers may have been allocated
3698                  * to an SKB, so we need to unmap and free potential storage */
3699                 if (rxq->pool[i].skb != NULL) {
3700                         pci_unmap_single(priv->pci_dev,
3701                                          rxq->pool[i].dma_addr,
3702                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3703                         priv->alloc_rxb_skb--;
3704                         dev_kfree_skb(rxq->pool[i].skb);
3705                         rxq->pool[i].skb = NULL;
3706                 }
3707                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3708         }
3709
3710         /* Set us so that we have processed and used all buffers, but have
3711          * not restocked the Rx queue with fresh buffers */
3712         rxq->read = rxq->write = 0;
3713         rxq->free_count = 0;
3714         spin_unlock_irqrestore(&rxq->lock, flags);
3715 }
3716
3717 /* Convert linear signal-to-noise ratio into dB */
3718 static u8 ratio2dB[100] = {
3719 /*       0   1   2   3   4   5   6   7   8   9 */
3720          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3721         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3722         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3723         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3724         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3725         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3726         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3727         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3728         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3729         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3730 };
3731
3732 /* Calculates a relative dB value from a ratio of linear
3733  *   (i.e. not dB) signal levels.
3734  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3735 int iwl3945_calc_db_from_ratio(int sig_ratio)
3736 {
3737         /* 1000:1 or higher just report as 60 dB */
3738         if (sig_ratio >= 1000)
3739                 return 60;
3740
3741         /* 100:1 or higher, divide by 10 and use table,
3742          *   add 20 dB to make up for divide by 10 */
3743         if (sig_ratio >= 100)
3744                 return 20 + (int)ratio2dB[sig_ratio/10];
3745
3746         /* We shouldn't see this */
3747         if (sig_ratio < 1)
3748                 return 0;
3749
3750         /* Use table for ratios 1:1 - 99:1 */
3751         return (int)ratio2dB[sig_ratio];
3752 }
3753
3754 #define PERFECT_RSSI (-20) /* dBm */
3755 #define WORST_RSSI (-95)   /* dBm */
3756 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3757
3758 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3759  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3760  *   about formulas used below. */
3761 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3762 {
3763         int sig_qual;
3764         int degradation = PERFECT_RSSI - rssi_dbm;
3765
3766         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3767          * as indicator; formula is (signal dbm - noise dbm).
3768          * SNR at or above 40 is a great signal (100%).
3769          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3770          * Weakest usable signal is usually 10 - 15 dB SNR. */
3771         if (noise_dbm) {
3772                 if (rssi_dbm - noise_dbm >= 40)
3773                         return 100;
3774                 else if (rssi_dbm < noise_dbm)
3775                         return 0;
3776                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3777
3778         /* Else use just the signal level.
3779          * This formula is a least squares fit of data points collected and
3780          *   compared with a reference system that had a percentage (%) display
3781          *   for signal quality. */
3782         } else
3783                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3784                             (15 * RSSI_RANGE + 62 * degradation)) /
3785                            (RSSI_RANGE * RSSI_RANGE);
3786
3787         if (sig_qual > 100)
3788                 sig_qual = 100;
3789         else if (sig_qual < 1)
3790                 sig_qual = 0;
3791
3792         return sig_qual;
3793 }
3794
3795 /**
3796  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3797  *
3798  * Uses the priv->rx_handlers callback function array to invoke
3799  * the appropriate handlers, including command responses,
3800  * frame-received notifications, and other notifications.
3801  */
3802 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
3803 {
3804         struct iwl3945_rx_mem_buffer *rxb;
3805         struct iwl_rx_packet *pkt;
3806         struct iwl3945_rx_queue *rxq = &priv->rxq;
3807         u32 r, i;
3808         int reclaim;
3809         unsigned long flags;
3810         u8 fill_rx = 0;
3811         u32 count = 8;
3812
3813         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3814          * buffer that the driver may process (last buffer filled by ucode). */
3815         r = iwl3945_hw_get_rx_read(priv);
3816         i = rxq->read;
3817
3818         if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3819                 fill_rx = 1;
3820         /* Rx interrupt, but nothing sent from uCode */
3821         if (i == r)
3822                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3823
3824         while (i != r) {
3825                 rxb = rxq->queue[i];
3826
3827                 /* If an RXB doesn't have a Rx queue slot associated with it,
3828                  * then a bug has been introduced in the queue refilling
3829                  * routines -- catch it here */
3830                 BUG_ON(rxb == NULL);
3831
3832                 rxq->queue[i] = NULL;
3833
3834                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3835                                             IWL_RX_BUF_SIZE,
3836                                             PCI_DMA_FROMDEVICE);
3837                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3838
3839                 /* Reclaim a command buffer only if this packet is a response
3840                  *   to a (driver-originated) command.
3841                  * If the packet (e.g. Rx frame) originated from uCode,
3842                  *   there is no command buffer to reclaim.
3843                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3844                  *   but apparently a few don't get set; catch them here. */
3845                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3846                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3847                         (pkt->hdr.cmd != REPLY_TX);
3848
3849                 /* Based on type of command response or notification,
3850                  *   handle those that need handling via function in
3851                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
3852                 if (priv->rx_handlers[pkt->hdr.cmd]) {
3853                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3854                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3855                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3856                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3857                 } else {
3858                         /* No handling needed */
3859                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3860                                 "r %d i %d No handler needed for %s, 0x%02x\n",
3861                                 r, i, get_cmd_string(pkt->hdr.cmd),
3862                                 pkt->hdr.cmd);
3863                 }
3864
3865                 if (reclaim) {
3866                         /* Invoke any callbacks, transfer the skb to caller, and
3867                          * fire off the (possibly) blocking iwl3945_send_cmd()
3868                          * as we reclaim the driver command queue */
3869                         if (rxb && rxb->skb)
3870                                 iwl3945_tx_cmd_complete(priv, rxb);
3871                         else
3872                                 IWL_WARNING("Claim null rxb?\n");
3873                 }
3874
3875                 /* For now we just don't re-use anything.  We can tweak this
3876                  * later to try and re-use notification packets and SKBs that
3877                  * fail to Rx correctly */
3878                 if (rxb->skb != NULL) {
3879                         priv->alloc_rxb_skb--;
3880                         dev_kfree_skb_any(rxb->skb);
3881                         rxb->skb = NULL;
3882                 }
3883
3884                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3885                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3886                 spin_lock_irqsave(&rxq->lock, flags);
3887                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3888                 spin_unlock_irqrestore(&rxq->lock, flags);
3889                 i = (i + 1) & RX_QUEUE_MASK;
3890                 /* If there are a lot of unused frames,
3891                  * restock the Rx queue so ucode won't assert. */
3892                 if (fill_rx) {
3893                         count++;
3894                         if (count >= 8) {
3895                                 priv->rxq.read = i;
3896                                 __iwl3945_rx_replenish(priv);
3897                                 count = 0;
3898                         }
3899                 }
3900         }
3901
3902         /* Backtrack one entry */
3903         priv->rxq.read = i;
3904         iwl3945_rx_queue_restock(priv);
3905 }
3906
3907 /**
3908  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
3909  */
3910 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
3911                                   struct iwl3945_tx_queue *txq)
3912 {
3913         u32 reg = 0;
3914         int rc = 0;
3915         int txq_id = txq->q.id;
3916
3917         if (txq->need_update == 0)
3918                 return rc;
3919
3920         /* if we're trying to save power */
3921         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3922                 /* wake up nic if it's powered down ...
3923                  * uCode will wake up, and interrupt us again, so next
3924                  * time we'll skip this part. */
3925                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3926
3927                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3928                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3929                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
3930                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3931                         return rc;
3932                 }
3933
3934                 /* restore this queue's parameters in nic hardware. */
3935                 rc = iwl3945_grab_nic_access(priv);
3936                 if (rc)
3937                         return rc;
3938                 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
3939                                      txq->q.write_ptr | (txq_id << 8));
3940                 iwl3945_release_nic_access(priv);
3941
3942         /* else not in power-save mode, uCode will never sleep when we're
3943          * trying to tx (during RFKILL, we're not trying to tx). */
3944         } else
3945                 iwl3945_write32(priv, HBUS_TARG_WRPTR,
3946                             txq->q.write_ptr | (txq_id << 8));
3947
3948         txq->need_update = 0;
3949
3950         return rc;
3951 }
3952
3953 #ifdef CONFIG_IWL3945_DEBUG
3954 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
3955 {
3956         IWL_DEBUG_RADIO("RX CONFIG:\n");
3957         iwl3945_print_hex_dump(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 (iwl3945_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->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 (iwl3945_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 (iwl3945_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 (iwl3945_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         IWL_DEBUG_MAC80211("enter\n");
7147         IWL_DEBUG_MAC80211("leave\n");
7148
7149         return 0;
7150 }
7151
7152 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7153 {
7154         struct iwl3945_priv *priv = hw->priv;
7155         unsigned long flags;
7156
7157         mutex_lock(&priv->mutex);
7158         IWL_DEBUG_MAC80211("enter\n");
7159
7160         iwl3945_reset_qos(priv);
7161
7162         spin_lock_irqsave(&priv->lock, flags);
7163         priv->assoc_id = 0;
7164         priv->assoc_capability = 0;
7165         priv->call_post_assoc_from_beacon = 0;
7166
7167         /* new association get rid of ibss beacon skb */
7168         if (priv->ibss_beacon)
7169                 dev_kfree_skb(priv->ibss_beacon);
7170
7171         priv->ibss_beacon = NULL;
7172
7173         priv->beacon_int = priv->hw->conf.beacon_int;
7174         priv->timestamp = 0;
7175         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
7176                 priv->beacon_int = 0;
7177
7178         spin_unlock_irqrestore(&priv->lock, flags);
7179
7180         if (!iwl3945_is_ready_rf(priv)) {
7181                 IWL_DEBUG_MAC80211("leave - not ready\n");
7182                 mutex_unlock(&priv->mutex);
7183                 return;
7184         }
7185
7186         /* we are restarting association process
7187          * clear RXON_FILTER_ASSOC_MSK bit
7188         */
7189         if (priv->iw_mode != NL80211_IFTYPE_AP) {
7190                 iwl3945_scan_cancel_timeout(priv, 100);
7191                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7192                 iwl3945_commit_rxon(priv);
7193         }
7194
7195         /* Per mac80211.h: This is only used in IBSS mode... */
7196         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7197
7198                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7199                 mutex_unlock(&priv->mutex);
7200                 return;
7201         }
7202
7203         iwl3945_set_rate(priv);
7204
7205         mutex_unlock(&priv->mutex);
7206
7207         IWL_DEBUG_MAC80211("leave\n");
7208
7209 }
7210
7211 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
7212 {
7213         struct iwl3945_priv *priv = hw->priv;
7214         unsigned long flags;
7215
7216         IWL_DEBUG_MAC80211("enter\n");
7217
7218         if (!iwl3945_is_ready_rf(priv)) {
7219                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7220                 return -EIO;
7221         }
7222
7223         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7224                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7225                 return -EIO;
7226         }
7227
7228         spin_lock_irqsave(&priv->lock, flags);
7229
7230         if (priv->ibss_beacon)
7231                 dev_kfree_skb(priv->ibss_beacon);
7232
7233         priv->ibss_beacon = skb;
7234
7235         priv->assoc_id = 0;
7236
7237         IWL_DEBUG_MAC80211("leave\n");
7238         spin_unlock_irqrestore(&priv->lock, flags);
7239
7240         iwl3945_reset_qos(priv);
7241
7242         iwl3945_post_associate(priv);
7243
7244
7245         return 0;
7246 }
7247
7248 /*****************************************************************************
7249  *
7250  * sysfs attributes
7251  *
7252  *****************************************************************************/
7253
7254 #ifdef CONFIG_IWL3945_DEBUG
7255
7256 /*
7257  * The following adds a new attribute to the sysfs representation
7258  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7259  * used for controlling the debug level.
7260  *
7261  * See the level definitions in iwl for details.
7262  */
7263
7264 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7265 {
7266         return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7267 }
7268 static ssize_t store_debug_level(struct device_driver *d,
7269                                  const char *buf, size_t count)
7270 {
7271         char *p = (char *)buf;
7272         u32 val;
7273
7274         val = simple_strtoul(p, &p, 0);
7275         if (p == buf)
7276                 printk(KERN_INFO DRV_NAME
7277                        ": %s is not in hex or decimal form.\n", buf);
7278         else
7279                 iwl3945_debug_level = val;
7280
7281         return strnlen(buf, count);
7282 }
7283
7284 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7285                    show_debug_level, store_debug_level);
7286
7287 #endif /* CONFIG_IWL3945_DEBUG */
7288
7289 static ssize_t show_temperature(struct device *d,
7290                                 struct device_attribute *attr, char *buf)
7291 {
7292         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7293
7294         if (!iwl3945_is_alive(priv))
7295                 return -EAGAIN;
7296
7297         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7298 }
7299
7300 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7301
7302 static ssize_t show_tx_power(struct device *d,
7303                              struct device_attribute *attr, char *buf)
7304 {
7305         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7306         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7307 }
7308
7309 static ssize_t store_tx_power(struct device *d,
7310                               struct device_attribute *attr,
7311                               const char *buf, size_t count)
7312 {
7313         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7314         char *p = (char *)buf;
7315         u32 val;
7316
7317         val = simple_strtoul(p, &p, 10);
7318         if (p == buf)
7319                 printk(KERN_INFO DRV_NAME
7320                        ": %s is not in decimal form.\n", buf);
7321         else
7322                 iwl3945_hw_reg_set_txpower(priv, val);
7323
7324         return count;
7325 }
7326
7327 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7328
7329 static ssize_t show_flags(struct device *d,
7330                           struct device_attribute *attr, char *buf)
7331 {
7332         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7333
7334         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7335 }
7336
7337 static ssize_t store_flags(struct device *d,
7338                            struct device_attribute *attr,
7339                            const char *buf, size_t count)
7340 {
7341         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7342         u32 flags = simple_strtoul(buf, NULL, 0);
7343
7344         mutex_lock(&priv->mutex);
7345         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7346                 /* Cancel any currently running scans... */
7347                 if (iwl3945_scan_cancel_timeout(priv, 100))
7348                         IWL_WARNING("Could not cancel scan.\n");
7349                 else {
7350                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7351                                        flags);
7352                         priv->staging_rxon.flags = cpu_to_le32(flags);
7353                         iwl3945_commit_rxon(priv);
7354                 }
7355         }
7356         mutex_unlock(&priv->mutex);
7357
7358         return count;
7359 }
7360
7361 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7362
7363 static ssize_t show_filter_flags(struct device *d,
7364                                  struct device_attribute *attr, char *buf)
7365 {
7366         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7367
7368         return sprintf(buf, "0x%04X\n",
7369                 le32_to_cpu(priv->active_rxon.filter_flags));
7370 }
7371
7372 static ssize_t store_filter_flags(struct device *d,
7373                                   struct device_attribute *attr,
7374                                   const char *buf, size_t count)
7375 {
7376         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7377         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7378
7379         mutex_lock(&priv->mutex);
7380         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7381                 /* Cancel any currently running scans... */
7382                 if (iwl3945_scan_cancel_timeout(priv, 100))
7383                         IWL_WARNING("Could not cancel scan.\n");
7384                 else {
7385                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7386                                        "0x%04X\n", filter_flags);
7387                         priv->staging_rxon.filter_flags =
7388                                 cpu_to_le32(filter_flags);
7389                         iwl3945_commit_rxon(priv);
7390                 }
7391         }
7392         mutex_unlock(&priv->mutex);
7393
7394         return count;
7395 }
7396
7397 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7398                    store_filter_flags);
7399
7400 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7401
7402 static ssize_t show_measurement(struct device *d,
7403                                 struct device_attribute *attr, char *buf)
7404 {
7405         struct iwl3945_priv *priv = dev_get_drvdata(d);
7406         struct iwl_spectrum_notification measure_report;
7407         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7408         u8 *data = (u8 *)&measure_report;
7409         unsigned long flags;
7410
7411         spin_lock_irqsave(&priv->lock, flags);
7412         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7413                 spin_unlock_irqrestore(&priv->lock, flags);
7414                 return 0;
7415         }
7416         memcpy(&measure_report, &priv->measure_report, size);
7417         priv->measurement_status = 0;
7418         spin_unlock_irqrestore(&priv->lock, flags);
7419
7420         while (size && (PAGE_SIZE - len)) {
7421                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7422                                    PAGE_SIZE - len, 1);
7423                 len = strlen(buf);
7424                 if (PAGE_SIZE - len)
7425                         buf[len++] = '\n';
7426
7427                 ofs += 16;
7428                 size -= min(size, 16U);
7429         }
7430
7431         return len;
7432 }
7433
7434 static ssize_t store_measurement(struct device *d,
7435                                  struct device_attribute *attr,
7436                                  const char *buf, size_t count)
7437 {
7438         struct iwl3945_priv *priv = dev_get_drvdata(d);
7439         struct ieee80211_measurement_params params = {
7440                 .channel = le16_to_cpu(priv->active_rxon.channel),
7441                 .start_time = cpu_to_le64(priv->last_tsf),
7442                 .duration = cpu_to_le16(1),
7443         };
7444         u8 type = IWL_MEASURE_BASIC;
7445         u8 buffer[32];
7446         u8 channel;
7447
7448         if (count) {
7449                 char *p = buffer;
7450                 strncpy(buffer, buf, min(sizeof(buffer), count));
7451                 channel = simple_strtoul(p, NULL, 0);
7452                 if (channel)
7453                         params.channel = channel;
7454
7455                 p = buffer;
7456                 while (*p && *p != ' ')
7457                         p++;
7458                 if (*p)
7459                         type = simple_strtoul(p + 1, NULL, 0);
7460         }
7461
7462         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7463                        "channel %d (for '%s')\n", type, params.channel, buf);
7464         iwl3945_get_measurement(priv, &params, type);
7465
7466         return count;
7467 }
7468
7469 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7470                    show_measurement, store_measurement);
7471 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7472
7473 static ssize_t store_retry_rate(struct device *d,
7474                                 struct device_attribute *attr,
7475                                 const char *buf, size_t count)
7476 {
7477         struct iwl3945_priv *priv = dev_get_drvdata(d);
7478
7479         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7480         if (priv->retry_rate <= 0)
7481                 priv->retry_rate = 1;
7482
7483         return count;
7484 }
7485
7486 static ssize_t show_retry_rate(struct device *d,
7487                                struct device_attribute *attr, char *buf)
7488 {
7489         struct iwl3945_priv *priv = dev_get_drvdata(d);
7490         return sprintf(buf, "%d", priv->retry_rate);
7491 }
7492
7493 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7494                    store_retry_rate);
7495
7496 static ssize_t store_power_level(struct device *d,
7497                                  struct device_attribute *attr,
7498                                  const char *buf, size_t count)
7499 {
7500         struct iwl3945_priv *priv = dev_get_drvdata(d);
7501         int rc;
7502         int mode;
7503
7504         mode = simple_strtoul(buf, NULL, 0);
7505         mutex_lock(&priv->mutex);
7506
7507         if (!iwl3945_is_ready(priv)) {
7508                 rc = -EAGAIN;
7509                 goto out;
7510         }
7511
7512         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7513                 mode = IWL_POWER_AC;
7514         else
7515                 mode |= IWL_POWER_ENABLED;
7516
7517         if (mode != priv->power_mode) {
7518                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7519                 if (rc) {
7520                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7521                         goto out;
7522                 }
7523                 priv->power_mode = mode;
7524         }
7525
7526         rc = count;
7527
7528  out:
7529         mutex_unlock(&priv->mutex);
7530         return rc;
7531 }
7532
7533 #define MAX_WX_STRING 80
7534
7535 /* Values are in microsecond */
7536 static const s32 timeout_duration[] = {
7537         350000,
7538         250000,
7539         75000,
7540         37000,
7541         25000,
7542 };
7543 static const s32 period_duration[] = {
7544         400000,
7545         700000,
7546         1000000,
7547         1000000,
7548         1000000
7549 };
7550
7551 static ssize_t show_power_level(struct device *d,
7552                                 struct device_attribute *attr, char *buf)
7553 {
7554         struct iwl3945_priv *priv = dev_get_drvdata(d);
7555         int level = IWL_POWER_LEVEL(priv->power_mode);
7556         char *p = buf;
7557
7558         p += sprintf(p, "%d ", level);
7559         switch (level) {
7560         case IWL_POWER_MODE_CAM:
7561         case IWL_POWER_AC:
7562                 p += sprintf(p, "(AC)");
7563                 break;
7564         case IWL_POWER_BATTERY:
7565                 p += sprintf(p, "(BATTERY)");
7566                 break;
7567         default:
7568                 p += sprintf(p,
7569                              "(Timeout %dms, Period %dms)",
7570                              timeout_duration[level - 1] / 1000,
7571                              period_duration[level - 1] / 1000);
7572         }
7573
7574         if (!(priv->power_mode & IWL_POWER_ENABLED))
7575                 p += sprintf(p, " OFF\n");
7576         else
7577                 p += sprintf(p, " \n");
7578
7579         return p - buf + 1;
7580
7581 }
7582
7583 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7584                    store_power_level);
7585
7586 static ssize_t show_channels(struct device *d,
7587                              struct device_attribute *attr, char *buf)
7588 {
7589         /* all this shit doesn't belong into sysfs anyway */
7590         return 0;
7591 }
7592
7593 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7594
7595 static ssize_t show_statistics(struct device *d,
7596                                struct device_attribute *attr, char *buf)
7597 {
7598         struct iwl3945_priv *priv = dev_get_drvdata(d);
7599         u32 size = sizeof(struct iwl3945_notif_statistics);
7600         u32 len = 0, ofs = 0;
7601         u8 *data = (u8 *)&priv->statistics;
7602         int rc = 0;
7603
7604         if (!iwl3945_is_alive(priv))
7605                 return -EAGAIN;
7606
7607         mutex_lock(&priv->mutex);
7608         rc = iwl3945_send_statistics_request(priv);
7609         mutex_unlock(&priv->mutex);
7610
7611         if (rc) {
7612                 len = sprintf(buf,
7613                               "Error sending statistics request: 0x%08X\n", rc);
7614                 return len;
7615         }
7616
7617         while (size && (PAGE_SIZE - len)) {
7618                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7619                                    PAGE_SIZE - len, 1);
7620                 len = strlen(buf);
7621                 if (PAGE_SIZE - len)
7622                         buf[len++] = '\n';
7623
7624                 ofs += 16;
7625                 size -= min(size, 16U);
7626         }
7627
7628         return len;
7629 }
7630
7631 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7632
7633 static ssize_t show_antenna(struct device *d,
7634                             struct device_attribute *attr, char *buf)
7635 {
7636         struct iwl3945_priv *priv = dev_get_drvdata(d);
7637
7638         if (!iwl3945_is_alive(priv))
7639                 return -EAGAIN;
7640
7641         return sprintf(buf, "%d\n", priv->antenna);
7642 }
7643
7644 static ssize_t store_antenna(struct device *d,
7645                              struct device_attribute *attr,
7646                              const char *buf, size_t count)
7647 {
7648         int ant;
7649         struct iwl3945_priv *priv = dev_get_drvdata(d);
7650
7651         if (count == 0)
7652                 return 0;
7653
7654         if (sscanf(buf, "%1i", &ant) != 1) {
7655                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7656                 return count;
7657         }
7658
7659         if ((ant >= 0) && (ant <= 2)) {
7660                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7661                 priv->antenna = (enum iwl3945_antenna)ant;
7662         } else
7663                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7664
7665
7666         return count;
7667 }
7668
7669 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7670
7671 static ssize_t show_status(struct device *d,
7672                            struct device_attribute *attr, char *buf)
7673 {
7674         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7675         if (!iwl3945_is_alive(priv))
7676                 return -EAGAIN;
7677         return sprintf(buf, "0x%08x\n", (int)priv->status);
7678 }
7679
7680 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7681
7682 static ssize_t dump_error_log(struct device *d,
7683                               struct device_attribute *attr,
7684                               const char *buf, size_t count)
7685 {
7686         char *p = (char *)buf;
7687
7688         if (p[0] == '1')
7689                 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
7690
7691         return strnlen(buf, count);
7692 }
7693
7694 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7695
7696 static ssize_t dump_event_log(struct device *d,
7697                               struct device_attribute *attr,
7698                               const char *buf, size_t count)
7699 {
7700         char *p = (char *)buf;
7701
7702         if (p[0] == '1')
7703                 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
7704
7705         return strnlen(buf, count);
7706 }
7707
7708 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7709
7710 /*****************************************************************************
7711  *
7712  * driver setup and tear down
7713  *
7714  *****************************************************************************/
7715
7716 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
7717 {
7718         priv->workqueue = create_workqueue(DRV_NAME);
7719
7720         init_waitqueue_head(&priv->wait_command_queue);
7721
7722         INIT_WORK(&priv->up, iwl3945_bg_up);
7723         INIT_WORK(&priv->restart, iwl3945_bg_restart);
7724         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7725         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7726         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7727         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7728         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7729         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7730         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7731         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7732         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7733
7734         iwl3945_hw_setup_deferred_work(priv);
7735
7736         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7737                      iwl3945_irq_tasklet, (unsigned long)priv);
7738 }
7739
7740 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
7741 {
7742         iwl3945_hw_cancel_deferred_work(priv);
7743
7744         cancel_delayed_work_sync(&priv->init_alive_start);
7745         cancel_delayed_work(&priv->scan_check);
7746         cancel_delayed_work(&priv->alive_start);
7747         cancel_work_sync(&priv->beacon_update);
7748 }
7749
7750 static struct attribute *iwl3945_sysfs_entries[] = {
7751         &dev_attr_antenna.attr,
7752         &dev_attr_channels.attr,
7753         &dev_attr_dump_errors.attr,
7754         &dev_attr_dump_events.attr,
7755         &dev_attr_flags.attr,
7756         &dev_attr_filter_flags.attr,
7757 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7758         &dev_attr_measurement.attr,
7759 #endif
7760         &dev_attr_power_level.attr,
7761         &dev_attr_retry_rate.attr,
7762         &dev_attr_statistics.attr,
7763         &dev_attr_status.attr,
7764         &dev_attr_temperature.attr,
7765         &dev_attr_tx_power.attr,
7766
7767         NULL
7768 };
7769
7770 static struct attribute_group iwl3945_attribute_group = {
7771         .name = NULL,           /* put in device directory */
7772         .attrs = iwl3945_sysfs_entries,
7773 };
7774
7775 static struct ieee80211_ops iwl3945_hw_ops = {
7776         .tx = iwl3945_mac_tx,
7777         .start = iwl3945_mac_start,
7778         .stop = iwl3945_mac_stop,
7779         .add_interface = iwl3945_mac_add_interface,
7780         .remove_interface = iwl3945_mac_remove_interface,
7781         .config = iwl3945_mac_config,
7782         .config_interface = iwl3945_mac_config_interface,
7783         .configure_filter = iwl3945_configure_filter,
7784         .set_key = iwl3945_mac_set_key,
7785         .get_stats = iwl3945_mac_get_stats,
7786         .get_tx_stats = iwl3945_mac_get_tx_stats,
7787         .conf_tx = iwl3945_mac_conf_tx,
7788         .reset_tsf = iwl3945_mac_reset_tsf,
7789         .bss_info_changed = iwl3945_bss_info_changed,
7790         .hw_scan = iwl3945_mac_hw_scan
7791 };
7792
7793 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7794 {
7795         int err = 0;
7796         struct iwl3945_priv *priv;
7797         struct ieee80211_hw *hw;
7798         struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
7799         unsigned long flags;
7800
7801         /***********************
7802          * 1. Allocating HW data
7803          * ********************/
7804
7805         /* Disabling hardware scan means that mac80211 will perform scans
7806          * "the hard way", rather than using device's scan. */
7807         if (iwl3945_param_disable_hw_scan) {
7808                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7809                 iwl3945_hw_ops.hw_scan = NULL;
7810         }
7811
7812         if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
7813             (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
7814                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7815                           IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7816                 err = -EINVAL;
7817                 goto out;
7818         }
7819
7820         /* mac80211 allocates memory for this device instance, including
7821          *   space for this driver's private structure */
7822         hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
7823         if (hw == NULL) {
7824                 IWL_ERROR("Can not allocate network device\n");
7825                 err = -ENOMEM;
7826                 goto out;
7827         }
7828
7829         SET_IEEE80211_DEV(hw, &pdev->dev);
7830
7831         priv = hw->priv;
7832         priv->hw = hw;
7833         priv->pci_dev = pdev;
7834         priv->cfg = cfg;
7835
7836         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7837         hw->rate_control_algorithm = "iwl-3945-rs";
7838         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7839
7840         /* Select antenna (may be helpful if only one antenna is connected) */
7841         priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
7842 #ifdef CONFIG_IWL3945_DEBUG
7843         iwl3945_debug_level = iwl3945_param_debug;
7844         atomic_set(&priv->restrict_refcnt, 0);
7845 #endif
7846
7847         /* Tell mac80211 our characteristics */
7848         hw->flags = IEEE80211_HW_SIGNAL_DBM |
7849                     IEEE80211_HW_NOISE_DBM;
7850
7851         hw->wiphy->interface_modes =
7852                 BIT(NL80211_IFTYPE_STATION) |
7853                 BIT(NL80211_IFTYPE_ADHOC);
7854
7855         hw->wiphy->fw_handles_regulatory = true;
7856
7857         /* 4 EDCA QOS priorities */
7858         hw->queues = 4;
7859
7860         /***************************
7861          * 2. Initializing PCI bus
7862          * *************************/
7863         if (pci_enable_device(pdev)) {
7864                 err = -ENODEV;
7865                 goto out_ieee80211_free_hw;
7866         }
7867
7868         pci_set_master(pdev);
7869
7870         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7871         if (!err)
7872                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7873         if (err) {
7874                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
7875                 goto out_pci_disable_device;
7876         }
7877
7878         pci_set_drvdata(pdev, priv);
7879         err = pci_request_regions(pdev, DRV_NAME);
7880         if (err)
7881                 goto out_pci_disable_device;
7882
7883         /***********************
7884          * 3. Read REV Register
7885          * ********************/
7886         priv->hw_base = pci_iomap(pdev, 0, 0);
7887         if (!priv->hw_base) {
7888                 err = -ENODEV;
7889                 goto out_pci_release_regions;
7890         }
7891
7892         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7893                         (unsigned long long) pci_resource_len(pdev, 0));
7894         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7895
7896         /* We disable the RETRY_TIMEOUT register (0x41) to keep
7897          * PCI Tx retries from interfering with C3 CPU state */
7898         pci_write_config_byte(pdev, 0x41, 0x00);
7899
7900         /* nic init */
7901         iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7902                         CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7903
7904         iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7905         err = iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL,
7906                                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7907         if (err < 0) {
7908                 IWL_DEBUG_INFO("Failed to init the card\n");
7909                 goto out_remove_sysfs;
7910         }
7911
7912         /***********************
7913          * 4. Read EEPROM
7914          * ********************/
7915         /* Read the EEPROM */
7916         err = iwl3945_eeprom_init(priv);
7917         if (err) {
7918                 IWL_ERROR("Unable to init EEPROM\n");
7919                 goto out_remove_sysfs;
7920         }
7921         /* MAC Address location in EEPROM same for 3945/4965 */
7922         get_eeprom_mac(priv, priv->mac_addr);
7923         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
7924         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7925
7926         /***********************
7927          * 5. Setup HW Constants
7928          * ********************/
7929         /* Device-specific setup */
7930         if (iwl3945_hw_set_hw_setting(priv)) {
7931                 IWL_ERROR("failed to set hw settings\n");
7932                 goto out_iounmap;
7933         }
7934
7935         /***********************
7936          * 6. Setup priv
7937          * ********************/
7938         priv->retry_rate = 1;
7939         priv->ibss_beacon = NULL;
7940
7941         spin_lock_init(&priv->lock);
7942         spin_lock_init(&priv->power_data.lock);
7943         spin_lock_init(&priv->sta_lock);
7944         spin_lock_init(&priv->hcmd_lock);
7945
7946         INIT_LIST_HEAD(&priv->free_frames);
7947         mutex_init(&priv->mutex);
7948
7949         /* Clear the driver's (not device's) station table */
7950         iwl3945_clear_stations_table(priv);
7951
7952         priv->data_retry_limit = -1;
7953         priv->ieee_channels = NULL;
7954         priv->ieee_rates = NULL;
7955         priv->band = IEEE80211_BAND_2GHZ;
7956
7957         priv->iw_mode = NL80211_IFTYPE_STATION;
7958
7959         iwl3945_reset_qos(priv);
7960
7961         priv->qos_data.qos_active = 0;
7962         priv->qos_data.qos_cap.val = 0;
7963
7964
7965         priv->rates_mask = IWL_RATES_MASK;
7966         /* If power management is turned on, default to AC mode */
7967         priv->power_mode = IWL_POWER_AC;
7968         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
7969
7970         err = iwl3945_init_channel_map(priv);
7971         if (err) {
7972                 IWL_ERROR("initializing regulatory failed: %d\n", err);
7973                 goto out_release_irq;
7974         }
7975
7976         err = iwl3945_init_geos(priv);
7977         if (err) {
7978                 IWL_ERROR("initializing geos failed: %d\n", err);
7979                 goto out_free_channel_map;
7980         }
7981
7982         printk(KERN_INFO DRV_NAME
7983                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7984
7985         /***********************************
7986          * 7. Initialize Module Parameters
7987          * **********************************/
7988
7989         /* Initialize module parameter values here */
7990         /* Disable radio (SW RF KILL) via parameter when loading driver */
7991         if (iwl3945_param_disable) {
7992                 set_bit(STATUS_RF_KILL_SW, &priv->status);
7993                 IWL_DEBUG_INFO("Radio disabled.\n");
7994         }
7995
7996
7997         /***********************
7998          * 8. Setup Services
7999          * ********************/
8000
8001         spin_lock_irqsave(&priv->lock, flags);
8002         iwl3945_disable_interrupts(priv);
8003         spin_unlock_irqrestore(&priv->lock, flags);
8004
8005         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8006         if (err) {
8007                 IWL_ERROR("failed to create sysfs device attributes\n");
8008                 goto out_free_geos;
8009         }
8010
8011         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8012         iwl3945_setup_deferred_work(priv);
8013         iwl3945_setup_rx_handlers(priv);
8014
8015         /***********************
8016          * 9. Conclude
8017          * ********************/
8018         pci_save_state(pdev);
8019         pci_disable_device(pdev);
8020
8021         /*********************************
8022          * 10. Setup and Register mac80211
8023          * *******************************/
8024
8025         err = ieee80211_register_hw(priv->hw);
8026         if (err) {
8027                 IWL_ERROR("Failed to register network device (error %d)\n", err);
8028                 goto  out_remove_sysfs;
8029         }
8030
8031         priv->hw->conf.beacon_int = 100;
8032         priv->mac80211_registered = 1;
8033
8034
8035         err = iwl3945_rfkill_init(priv);
8036         if (err)
8037                 IWL_ERROR("Unable to initialize RFKILL system. "
8038                                   "Ignoring error: %d\n", err);
8039
8040         return 0;
8041
8042  out_remove_sysfs:
8043         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8044  out_free_geos:
8045         iwl3945_free_geos(priv);
8046  out_free_channel_map:
8047         iwl3945_free_channel_map(priv);
8048
8049
8050  out_release_irq:
8051         destroy_workqueue(priv->workqueue);
8052         priv->workqueue = NULL;
8053         iwl3945_unset_hw_setting(priv);
8054
8055  out_iounmap:
8056         pci_iounmap(pdev, priv->hw_base);
8057  out_pci_release_regions:
8058         pci_release_regions(pdev);
8059  out_pci_disable_device:
8060         pci_disable_device(pdev);
8061         pci_set_drvdata(pdev, NULL);
8062  out_ieee80211_free_hw:
8063         ieee80211_free_hw(priv->hw);
8064  out:
8065         return err;
8066 }
8067
8068 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
8069 {
8070         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8071         unsigned long flags;
8072
8073         if (!priv)
8074                 return;
8075
8076         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8077
8078         set_bit(STATUS_EXIT_PENDING, &priv->status);
8079
8080         iwl3945_down(priv);
8081
8082         /* make sure we flush any pending irq or
8083          * tasklet for the driver
8084          */
8085         spin_lock_irqsave(&priv->lock, flags);
8086         iwl3945_disable_interrupts(priv);
8087         spin_unlock_irqrestore(&priv->lock, flags);
8088
8089         iwl_synchronize_irq(priv);
8090
8091         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8092
8093         iwl3945_rfkill_unregister(priv);
8094         iwl3945_dealloc_ucode_pci(priv);
8095
8096         if (priv->rxq.bd)
8097                 iwl3945_rx_queue_free(priv, &priv->rxq);
8098         iwl3945_hw_txq_ctx_free(priv);
8099
8100         iwl3945_unset_hw_setting(priv);
8101         iwl3945_clear_stations_table(priv);
8102
8103         if (priv->mac80211_registered)
8104                 ieee80211_unregister_hw(priv->hw);
8105
8106         /*netif_stop_queue(dev); */
8107         flush_workqueue(priv->workqueue);
8108
8109         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8110          * priv->workqueue... so we can't take down the workqueue
8111          * until now... */
8112         destroy_workqueue(priv->workqueue);
8113         priv->workqueue = NULL;
8114
8115         pci_iounmap(pdev, priv->hw_base);
8116         pci_release_regions(pdev);
8117         pci_disable_device(pdev);
8118         pci_set_drvdata(pdev, NULL);
8119
8120         iwl3945_free_channel_map(priv);
8121         iwl3945_free_geos(priv);
8122         kfree(priv->scan);
8123         if (priv->ibss_beacon)
8124                 dev_kfree_skb(priv->ibss_beacon);
8125
8126         ieee80211_free_hw(priv->hw);
8127 }
8128
8129 #ifdef CONFIG_PM
8130
8131 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8132 {
8133         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8134
8135         if (priv->is_open) {
8136                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8137                 iwl3945_mac_stop(priv->hw);
8138                 priv->is_open = 1;
8139         }
8140
8141         pci_set_power_state(pdev, PCI_D3hot);
8142
8143         return 0;
8144 }
8145
8146 static int iwl3945_pci_resume(struct pci_dev *pdev)
8147 {
8148         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8149
8150         pci_set_power_state(pdev, PCI_D0);
8151
8152         if (priv->is_open)
8153                 iwl3945_mac_start(priv->hw);
8154
8155         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8156         return 0;
8157 }
8158
8159 #endif /* CONFIG_PM */
8160
8161 /*************** RFKILL FUNCTIONS **********/
8162 #ifdef CONFIG_IWL3945_RFKILL
8163 /* software rf-kill from user */
8164 static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
8165 {
8166         struct iwl3945_priv *priv = data;
8167         int err = 0;
8168
8169         if (!priv->rfkill)
8170         return 0;
8171
8172         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
8173                 return 0;
8174
8175         IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
8176         mutex_lock(&priv->mutex);
8177
8178         switch (state) {
8179         case RFKILL_STATE_UNBLOCKED:
8180                 if (iwl3945_is_rfkill_hw(priv)) {
8181                         err = -EBUSY;
8182                         goto out_unlock;
8183                 }
8184                 iwl3945_radio_kill_sw(priv, 0);
8185                 break;
8186         case RFKILL_STATE_SOFT_BLOCKED:
8187                 iwl3945_radio_kill_sw(priv, 1);
8188                 break;
8189         default:
8190                 IWL_WARNING("we received unexpected RFKILL state %d\n", state);
8191                 break;
8192         }
8193 out_unlock:
8194         mutex_unlock(&priv->mutex);
8195
8196         return err;
8197 }
8198
8199 int iwl3945_rfkill_init(struct iwl3945_priv *priv)
8200 {
8201         struct device *device = wiphy_dev(priv->hw->wiphy);
8202         int ret = 0;
8203
8204         BUG_ON(device == NULL);
8205
8206         IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
8207         priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
8208         if (!priv->rfkill) {
8209                 IWL_ERROR("Unable to allocate rfkill device.\n");
8210                 ret = -ENOMEM;
8211                 goto error;
8212         }
8213
8214         priv->rfkill->name = priv->cfg->name;
8215         priv->rfkill->data = priv;
8216         priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
8217         priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
8218         priv->rfkill->user_claim_unsupported = 1;
8219
8220         priv->rfkill->dev.class->suspend = NULL;
8221         priv->rfkill->dev.class->resume = NULL;
8222
8223         ret = rfkill_register(priv->rfkill);
8224         if (ret) {
8225                 IWL_ERROR("Unable to register rfkill: %d\n", ret);
8226                 goto freed_rfkill;
8227         }
8228
8229         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8230         return ret;
8231
8232 freed_rfkill:
8233         if (priv->rfkill != NULL)
8234                 rfkill_free(priv->rfkill);
8235         priv->rfkill = NULL;
8236
8237 error:
8238         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8239         return ret;
8240 }
8241
8242 void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
8243 {
8244         if (priv->rfkill)
8245                 rfkill_unregister(priv->rfkill);
8246
8247         priv->rfkill = NULL;
8248 }
8249
8250 /* set rf-kill to the right state. */
8251 void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
8252 {
8253
8254         if (!priv->rfkill)
8255                 return;
8256
8257         if (iwl3945_is_rfkill_hw(priv)) {
8258                 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
8259                 return;
8260         }
8261
8262         if (!iwl3945_is_rfkill_sw(priv))
8263                 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
8264         else
8265                 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
8266 }
8267 #endif
8268
8269 /*****************************************************************************
8270  *
8271  * driver and module entry point
8272  *
8273  *****************************************************************************/
8274
8275 static struct pci_driver iwl3945_driver = {
8276         .name = DRV_NAME,
8277         .id_table = iwl3945_hw_card_ids,
8278         .probe = iwl3945_pci_probe,
8279         .remove = __devexit_p(iwl3945_pci_remove),
8280 #ifdef CONFIG_PM
8281         .suspend = iwl3945_pci_suspend,
8282         .resume = iwl3945_pci_resume,
8283 #endif
8284 };
8285
8286 static int __init iwl3945_init(void)
8287 {
8288
8289         int ret;
8290         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8291         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8292
8293         ret = iwl3945_rate_control_register();
8294         if (ret) {
8295                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
8296                 return ret;
8297         }
8298
8299         ret = pci_register_driver(&iwl3945_driver);
8300         if (ret) {
8301                 IWL_ERROR("Unable to initialize PCI module\n");
8302                 goto error_register;
8303         }
8304 #ifdef CONFIG_IWL3945_DEBUG
8305         ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8306         if (ret) {
8307                 IWL_ERROR("Unable to create driver sysfs file\n");
8308                 goto error_debug;
8309         }
8310 #endif
8311
8312         return ret;
8313
8314 #ifdef CONFIG_IWL3945_DEBUG
8315 error_debug:
8316         pci_unregister_driver(&iwl3945_driver);
8317 #endif
8318 error_register:
8319         iwl3945_rate_control_unregister();
8320         return ret;
8321 }
8322
8323 static void __exit iwl3945_exit(void)
8324 {
8325 #ifdef CONFIG_IWL3945_DEBUG
8326         driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8327 #endif
8328         pci_unregister_driver(&iwl3945_driver);
8329         iwl3945_rate_control_unregister();
8330 }
8331
8332 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
8333
8334 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8335 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8336 module_param_named(disable, iwl3945_param_disable, int, 0444);
8337 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8338 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8339 MODULE_PARM_DESC(hwcrypto,
8340                  "using hardware crypto engine (default 0 [software])\n");
8341 module_param_named(debug, iwl3945_param_debug, uint, 0444);
8342 MODULE_PARM_DESC(debug, "debug output mask");
8343 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8344 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8345
8346 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8347 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8348
8349 module_exit(iwl3945_exit);
8350 module_init(iwl3945_init);