SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/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-3945.h"
  51 #include "iwl-helpers.h"
  52
  53 #ifdef CONFIG_IWL3945_DEBUG
  54 u32 iwl3945_debug_level;
  55 #endif
  56
  57 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
  58                                   struct iwl3945_tx_queue *txq);
  59
  60 /******************************************************************************
  61  *
  62  * module boiler plate
  63  *
  64  ******************************************************************************/
  65
  66 /* module parameters */
  67 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
  68 static int iwl3945_param_debug;    /* def: 0 = minimal debug log messages */
  69 static int iwl3945_param_disable;  /* def: 0 = enable radio */
  70 static int iwl3945_param_antenna;  /* def: 0 = both antennas (use diversity) */
  71 int iwl3945_param_hwcrypto;        /* def: 0 = use software encryption */
  72 static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
  73 int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
  74
  75 /*
  76  * module name, copyright, version, etc.
  77  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  78  */
  79
  80 #define DRV_DESCRIPTION \
  81 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  82
  83 #ifdef CONFIG_IWL3945_DEBUG
  84 #define VD "d"
  85 #else
  86 #define VD
  87 #endif
  88
  89 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  90 #define VS "s"
  91 #else
  92 #define VS
  93 #endif
  94
  95 #define IWLWIFI_VERSION "1.2.26k" VD VS
  96 #define DRV_COPYRIGHT   "Copyright(c) 2003-2008 Intel Corporation"
  97 #define DRV_VERSION     IWLWIFI_VERSION
  98
  99
 100 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 101 MODULE_VERSION(DRV_VERSION);
 102 MODULE_AUTHOR(DRV_COPYRIGHT);
 103 MODULE_LICENSE("GPL");
 104
 105 static const struct ieee80211_supported_band *iwl3945_get_band(
 106                 struct iwl3945_priv *priv, enum ieee80211_band band)
 107 {
 108         return priv->hw->wiphy->bands[band];
 109 }
 110
 111 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 112  * DMA services
 113  *
 114  * Theory of operation
 115  *
 116  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 117  * of buffer descriptors, each of which points to one or more data buffers for
 118  * the device to read from or fill.  Driver and device exchange status of each
 119  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 120  * entries in each circular buffer, to protect against confusing empty and full
 121  * queue states.
 122  *
 123  * The device reads or writes the data in the queues via the device's several
 124  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 125  *
 126  * For Tx queue, there are low mark and high mark limits. If, after queuing
 127  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 128  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 129  * Tx queue resumed.
 130  *
 131  * The 3945 operates with six queues:  One receive queue, one transmit queue
 132  * (#4) for sending commands to the device firmware, and four transmit queues
 133  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 134  ***************************************************/
 135
 136 int iwl3945_queue_space(const struct iwl3945_queue *q)
 137 {
 138         int s = q->read_ptr - q->write_ptr;
 139
 140         if (q->read_ptr > q->write_ptr)
 141                 s -= q->n_bd;
 142
 143         if (s <= 0)
 144                 s += q->n_window;
 145         /* keep some reserve to not confuse empty and full situations */
 146         s -= 2;
 147         if (s < 0)
 148                 s = 0;
 149         return s;
 150 }
 151
 152 int iwl3945_x2_queue_used(const struct iwl3945_queue *q, int i)
 153 {
 154         return q->write_ptr > q->read_ptr ?
 155                 (i >= q->read_ptr && i < q->write_ptr) :
 156                 !(i < q->read_ptr && i >= q->write_ptr);
 157 }
 158
 159
 160 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
 161 {
 162         /* This is for scan command, the big buffer at end of command array */
 163         if (is_huge)
 164                 return q->n_window;     /* must be power of 2 */
 165
 166         /* Otherwise, use normal size buffers */
 167         return index & (q->n_window - 1);
 168 }
 169
 170 /**
 171  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 172  */
 173 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
 174                           int count, int slots_num, u32 id)
 175 {
 176         q->n_bd = count;
 177         q->n_window = slots_num;
 178         q->id = id;
 179
 180         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 181          * and iwl_queue_dec_wrap are broken. */
 182         BUG_ON(!is_power_of_2(count));
 183
 184         /* slots_num must be power-of-two size, otherwise
 185          * get_cmd_index is broken. */
 186         BUG_ON(!is_power_of_2(slots_num));
 187
 188         q->low_mark = q->n_window / 4;
 189         if (q->low_mark < 4)
 190                 q->low_mark = 4;
 191
 192         q->high_mark = q->n_window / 8;
 193         if (q->high_mark < 2)
 194                 q->high_mark = 2;
 195
 196         q->write_ptr = q->read_ptr = 0;
 197
 198         return 0;
 199 }
 200
 201 /**
 202  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 203  */
 204 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
 205                               struct iwl3945_tx_queue *txq, u32 id)
 206 {
 207         struct pci_dev *dev = priv->pci_dev;
 208
 209         /* Driver private data, only for Tx (not command) queues,
 210          * not shared with device. */
 211         if (id != IWL_CMD_QUEUE_NUM) {
 212                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 213                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 214                 if (!txq->txb) {
 215                         IWL_ERROR("kmalloc for auxiliary BD "
 216                                   "structures failed\n");
 217                         goto error;
 218                 }
 219         } else
 220                 txq->txb = NULL;
 221
 222         /* Circular buffer of transmit frame descriptors (TFDs),
 223          * shared with device */
 224         txq->bd = pci_alloc_consistent(dev,
 225                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 226                         &txq->q.dma_addr);
 227
 228         if (!txq->bd) {
 229                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 230                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 231                 goto error;
 232         }
 233         txq->q.id = id;
 234
 235         return 0;
 236
 237  error:
 238         kfree(txq->txb);
 239         txq->txb = NULL;
 240
 241         return -ENOMEM;
 242 }
 243
 244 /**
 245  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 246  */
 247 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
 248                       struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
 249 {
 250         struct pci_dev *dev = priv->pci_dev;
 251         int len;
 252         int rc = 0;
 253
 254         /*
 255          * Alloc buffer array for commands (Tx or other types of commands).
 256          * For the command queue (#4), allocate command space + one big
 257          * command for scan, since scan command is very huge; the system will
 258          * not have two scans at the same time, so only one is needed.
 259          * For data Tx queues (all other queues), no super-size command
 260          * space is needed.
 261          */
 262         len = sizeof(struct iwl3945_cmd) * slots_num;
 263         if (txq_id == IWL_CMD_QUEUE_NUM)
 264                 len +=  IWL_MAX_SCAN_SIZE;
 265         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 266         if (!txq->cmd)
 267                 return -ENOMEM;
 268
 269         /* Alloc driver data array and TFD circular buffer */
 270         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 271         if (rc) {
 272                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 273
 274                 return -ENOMEM;
 275         }
 276         txq->need_update = 0;
 277
 278         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 279          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 280         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 281
 282         /* Initialize queue high/low-water, head/tail indexes */
 283         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 284
 285         /* Tell device where to find queue, enable DMA channel. */
 286         iwl3945_hw_tx_queue_init(priv, txq);
 287
 288         return 0;
 289 }
 290
 291 /**
 292  * iwl3945_tx_queue_free - Deallocate DMA queue.
 293  * @txq: Transmit queue to deallocate.
 294  *
 295  * Empty queue by removing and destroying all BD's.
 296  * Free all buffers.
 297  * 0-fill, but do not free "txq" descriptor structure.
 298  */
 299 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
 300 {
 301         struct iwl3945_queue *q = &txq->q;
 302         struct pci_dev *dev = priv->pci_dev;
 303         int len;
 304
 305         if (q->n_bd == 0)
 306                 return;
 307
 308         /* first, empty all BD's */
 309         for (; q->write_ptr != q->read_ptr;
 310              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 311                 iwl3945_hw_txq_free_tfd(priv, txq);
 312
 313         len = sizeof(struct iwl3945_cmd) * q->n_window;
 314         if (q->id == IWL_CMD_QUEUE_NUM)
 315                 len += IWL_MAX_SCAN_SIZE;
 316
 317         /* De-alloc array of command/tx buffers */
 318         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 319
 320         /* De-alloc circular buffer of TFDs */
 321         if (txq->q.n_bd)
 322                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
 323                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 324
 325         /* De-alloc array of per-TFD driver data */
 326         kfree(txq->txb);
 327         txq->txb = NULL;
 328
 329         /* 0-fill queue descriptor structure */
 330         memset(txq, 0, sizeof(*txq));
 331 }
 332
 333 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 334
 335 /*************** STATION TABLE MANAGEMENT ****
 336  * mac80211 should be examined to determine if sta_info is duplicating
 337  * the functionality provided here
 338  */
 339
 340 /**************************************************************/
 341 #if 0 /* temporary disable till we add real remove station */
 342 /**
 343  * iwl3945_remove_station - Remove driver's knowledge of station.
 344  *
 345  * NOTE:  This does not remove station from device's station table.
 346  */
 347 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
 348 {
 349         int index = IWL_INVALID_STATION;
 350         int i;
 351         unsigned long flags;
 352
 353         spin_lock_irqsave(&priv->sta_lock, flags);
 354
 355         if (is_ap)
 356                 index = IWL_AP_ID;
 357         else if (is_broadcast_ether_addr(addr))
 358                 index = priv->hw_setting.bcast_sta_id;
 359         else
 360                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 361                         if (priv->stations[i].used &&
 362                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 363                                                 addr)) {
 364                                 index = i;
 365                                 break;
 366                         }
 367
 368         if (unlikely(index == IWL_INVALID_STATION))
 369                 goto out;
 370
 371         if (priv->stations[index].used) {
 372                 priv->stations[index].used = 0;
 373                 priv->num_stations--;
 374         }
 375
 376         BUG_ON(priv->num_stations < 0);
 377
 378 out:
 379         spin_unlock_irqrestore(&priv->sta_lock, flags);
 380         return 0;
 381 }
 382 #endif
 383
 384 /**
 385  * iwl3945_clear_stations_table - Clear the driver's station table
 386  *
 387  * NOTE:  This does not clear or otherwise alter the device's station table.
 388  */
 389 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
 390 {
 391         unsigned long flags;
 392
 393         spin_lock_irqsave(&priv->sta_lock, flags);
 394
 395         priv->num_stations = 0;
 396         memset(priv->stations, 0, sizeof(priv->stations));
 397
 398         spin_unlock_irqrestore(&priv->sta_lock, flags);
 399 }
 400
 401 /**
 402  * iwl3945_add_station - Add station to station tables in driver and device
 403  */
 404 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
 405 {
 406         int i;
 407         int index = IWL_INVALID_STATION;
 408         struct iwl3945_station_entry *station;
 409         unsigned long flags_spin;
 410         u8 rate;
 411
 412         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 413         if (is_ap)
 414                 index = IWL_AP_ID;
 415         else if (is_broadcast_ether_addr(addr))
 416                 index = priv->hw_setting.bcast_sta_id;
 417         else
 418                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 419                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 420                                                 addr)) {
 421                                 index = i;
 422                                 break;
 423                         }
 424
 425                         if (!priv->stations[i].used &&
 426                             index == IWL_INVALID_STATION)
 427                                 index = i;
 428                 }
 429
 430         /* These two conditions has the same outcome but keep them separate
 431           since they have different meaning */
 432         if (unlikely(index == IWL_INVALID_STATION)) {
 433                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 434                 return index;
 435         }
 436
 437         if (priv->stations[index].used &&
 438            !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 439                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 440                 return index;
 441         }
 442
 443         IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
 444         station = &priv->stations[index];
 445         station->used = 1;
 446         priv->num_stations++;
 447
 448         /* Set up the REPLY_ADD_STA command to send to device */
 449         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 450         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 451         station->sta.mode = 0;
 452         station->sta.sta.sta_id = index;
 453         station->sta.station_flags = 0;
 454
 455         if (priv->band == IEEE80211_BAND_5GHZ)
 456                 rate = IWL_RATE_6M_PLCP;
 457         else
 458                 rate =  IWL_RATE_1M_PLCP;
 459
 460         /* Turn on both antennas for the station... */
 461         station->sta.rate_n_flags =
 462                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 463         station->current_rate.rate_n_flags =
 464                         le16_to_cpu(station->sta.rate_n_flags);
 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 |= cpu_to_le16(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 out;
 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 iwl3945_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 iwl3945_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 iwl3945_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(struct iwl3945_bt_cmd), &bt_cmd);
1151 }
1152
1153 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1154 {
1155         int rc = 0;
1156         struct iwl3945_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 iwl3945_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 iwl3945_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 iwl3945_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 iwl3945_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 iwl3945_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, sizeof(struct iwl3945_keyinfo));
1346         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1347         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1348         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1349         spin_unlock_irqrestore(&priv->sta_lock, flags);
1350
1351         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1352         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1353         return 0;
1354 }
1355
1356 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1357 {
1358         struct list_head *element;
1359
1360         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1361                        priv->frames_count);
1362
1363         while (!list_empty(&priv->free_frames)) {
1364                 element = priv->free_frames.next;
1365                 list_del(element);
1366                 kfree(list_entry(element, struct iwl3945_frame, list));
1367                 priv->frames_count--;
1368         }
1369
1370         if (priv->frames_count) {
1371                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1372                             priv->frames_count);
1373                 priv->frames_count = 0;
1374         }
1375 }
1376
1377 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1378 {
1379         struct iwl3945_frame *frame;
1380         struct list_head *element;
1381         if (list_empty(&priv->free_frames)) {
1382                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1383                 if (!frame) {
1384                         IWL_ERROR("Could not allocate frame!\n");
1385                         return NULL;
1386                 }
1387
1388                 priv->frames_count++;
1389                 return frame;
1390         }
1391
1392         element = priv->free_frames.next;
1393         list_del(element);
1394         return list_entry(element, struct iwl3945_frame, list);
1395 }
1396
1397 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1398 {
1399         memset(frame, 0, sizeof(*frame));
1400         list_add(&frame->list, &priv->free_frames);
1401 }
1402
1403 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1404                                 struct ieee80211_hdr *hdr,
1405                                 const u8 *dest, int left)
1406 {
1407
1408         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1409             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1410              (priv->iw_mode != NL80211_IFTYPE_AP)))
1411                 return 0;
1412
1413         if (priv->ibss_beacon->len > left)
1414                 return 0;
1415
1416         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1417
1418         return priv->ibss_beacon->len;
1419 }
1420
1421 static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
1422 {
1423         u8 i;
1424
1425         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1426              i = iwl3945_rates[i].next_ieee) {
1427                 if (rate_mask & (1 << i))
1428                         return iwl3945_rates[i].plcp;
1429         }
1430
1431         return IWL_RATE_INVALID;
1432 }
1433
1434 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1435 {
1436         struct iwl3945_frame *frame;
1437         unsigned int frame_size;
1438         int rc;
1439         u8 rate;
1440
1441         frame = iwl3945_get_free_frame(priv);
1442
1443         if (!frame) {
1444                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1445                           "command.\n");
1446                 return -ENOMEM;
1447         }
1448
1449         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1450                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
1451                                                 0xFF0);
1452                 if (rate == IWL_INVALID_RATE)
1453                         rate = IWL_RATE_6M_PLCP;
1454         } else {
1455                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1456                 if (rate == IWL_INVALID_RATE)
1457                         rate = IWL_RATE_1M_PLCP;
1458         }
1459
1460         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1461
1462         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1463                               &frame->u.cmd[0]);
1464
1465         iwl3945_free_frame(priv, frame);
1466
1467         return rc;
1468 }
1469
1470 /******************************************************************************
1471  *
1472  * EEPROM related functions
1473  *
1474  ******************************************************************************/
1475
1476 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1477 {
1478         memcpy(mac, priv->eeprom.mac_address, 6);
1479 }
1480
1481 /*
1482  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1483  * embedded controller) as EEPROM reader; each read is a series of pulses
1484  * to/from the EEPROM chip, not a single event, so even reads could conflict
1485  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1486  * simply claims ownership, which should be safe when this function is called
1487  * (i.e. before loading uCode!).
1488  */
1489 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1490 {
1491         _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1492         return 0;
1493 }
1494
1495 /**
1496  * iwl3945_eeprom_init - read EEPROM contents
1497  *
1498  * Load the EEPROM contents from adapter into priv->eeprom
1499  *
1500  * NOTE:  This routine uses the non-debug IO access functions.
1501  */
1502 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1503 {
1504         u16 *e = (u16 *)&priv->eeprom;
1505         u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1506         u32 r;
1507         int sz = sizeof(priv->eeprom);
1508         int rc;
1509         int i;
1510         u16 addr;
1511
1512         /* The EEPROM structure has several padding buffers within it
1513          * and when adding new EEPROM maps is subject to programmer errors
1514          * which may be very difficult to identify without explicitly
1515          * checking the resulting size of the eeprom map. */
1516         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1517
1518         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1519                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
1520                 return -ENOENT;
1521         }
1522
1523         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1524         rc = iwl3945_eeprom_acquire_semaphore(priv);
1525         if (rc < 0) {
1526                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1527                 return -ENOENT;
1528         }
1529
1530         /* eeprom is an array of 16bit values */
1531         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1532                 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1533                 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1534
1535                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1536                                         i += IWL_EEPROM_ACCESS_DELAY) {
1537                         r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1538                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1539                                 break;
1540                         udelay(IWL_EEPROM_ACCESS_DELAY);
1541                 }
1542
1543                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1544                         IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
1545                         return -ETIMEDOUT;
1546                 }
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, int is_direct)
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 our direct SSID IE... */
1627         if (is_direct) {
1628                 /* ...next IE... */
1629                 left -= 2 + priv->essid_len;
1630                 if (left < 0)
1631                         return 0;
1632                 /* ... fill it in... */
1633                 *pos++ = WLAN_EID_SSID;
1634                 *pos++ = priv->essid_len;
1635                 memcpy(pos, priv->essid, priv->essid_len);
1636                 pos += priv->essid_len;
1637                 len += 2 + priv->essid_len;
1638         }
1639
1640         /* fill in supported rate */
1641         /* ...next IE... */
1642         left -= 2;
1643         if (left < 0)
1644                 return 0;
1645
1646         /* ... fill it in... */
1647         *pos++ = WLAN_EID_SUPP_RATES;
1648         *pos = 0;
1649
1650         priv->active_rate = priv->rates_mask;
1651         active_rates = priv->active_rate;
1652         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1653
1654         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1655         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1656                         priv->active_rate_basic, &left);
1657         active_rates &= ~ret_rates;
1658
1659         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1660                                  priv->active_rate_basic, &left);
1661         active_rates &= ~ret_rates;
1662
1663         len += 2 + *pos;
1664         pos += (*pos) + 1;
1665         if (active_rates == 0)
1666                 goto fill_end;
1667
1668         /* fill in supported extended rate */
1669         /* ...next IE... */
1670         left -= 2;
1671         if (left < 0)
1672                 return 0;
1673         /* ... fill it in... */
1674         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1675         *pos = 0;
1676         iwl3945_supported_rate_to_ie(pos, active_rates,
1677                                  priv->active_rate_basic, &left);
1678         if (*pos > 0)
1679                 len += 2 + *pos;
1680
1681  fill_end:
1682         return (u16)len;
1683 }
1684
1685 /*
1686  * QoS  support
1687 */
1688 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1689                                        struct iwl3945_qosparam_cmd *qos)
1690 {
1691
1692         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1693                                 sizeof(struct iwl3945_qosparam_cmd), qos);
1694 }
1695
1696 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1697 {
1698         u16 cw_min = 15;
1699         u16 cw_max = 1023;
1700         u8 aifs = 2;
1701         u8 is_legacy = 0;
1702         unsigned long flags;
1703         int i;
1704
1705         spin_lock_irqsave(&priv->lock, flags);
1706         priv->qos_data.qos_active = 0;
1707
1708         if (priv->iw_mode == NL80211_IFTYPE_ADHOC) {
1709                 if (priv->qos_data.qos_enable)
1710                         priv->qos_data.qos_active = 1;
1711                 if (!(priv->active_rate & 0xfff0)) {
1712                         cw_min = 31;
1713                         is_legacy = 1;
1714                 }
1715         } else if (priv->iw_mode == NL80211_IFTYPE_AP) {
1716                 if (priv->qos_data.qos_enable)
1717                         priv->qos_data.qos_active = 1;
1718         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1719                 cw_min = 31;
1720                 is_legacy = 1;
1721         }
1722
1723         if (priv->qos_data.qos_active)
1724                 aifs = 3;
1725
1726         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1727         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1728         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1729         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1730         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1731
1732         if (priv->qos_data.qos_active) {
1733                 i = 1;
1734                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1735                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1736                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1737                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1738                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1739
1740                 i = 2;
1741                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1742                         cpu_to_le16((cw_min + 1) / 2 - 1);
1743                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1744                         cpu_to_le16(cw_max);
1745                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1746                 if (is_legacy)
1747                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1748                                 cpu_to_le16(6016);
1749                 else
1750                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1751                                 cpu_to_le16(3008);
1752                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1753
1754                 i = 3;
1755                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1756                         cpu_to_le16((cw_min + 1) / 4 - 1);
1757                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1758                         cpu_to_le16((cw_max + 1) / 2 - 1);
1759                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1760                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1761                 if (is_legacy)
1762                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1763                                 cpu_to_le16(3264);
1764                 else
1765                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1766                                 cpu_to_le16(1504);
1767         } else {
1768                 for (i = 1; i < 4; i++) {
1769                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1770                                 cpu_to_le16(cw_min);
1771                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1772                                 cpu_to_le16(cw_max);
1773                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1774                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1775                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1776                 }
1777         }
1778         IWL_DEBUG_QOS("set QoS to default \n");
1779
1780         spin_unlock_irqrestore(&priv->lock, flags);
1781 }
1782
1783 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
1784 {
1785         unsigned long flags;
1786
1787         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1788                 return;
1789
1790         if (!priv->qos_data.qos_enable)
1791                 return;
1792
1793         spin_lock_irqsave(&priv->lock, flags);
1794         priv->qos_data.def_qos_parm.qos_flags = 0;
1795
1796         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1797             !priv->qos_data.qos_cap.q_AP.txop_request)
1798                 priv->qos_data.def_qos_parm.qos_flags |=
1799                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1800
1801         if (priv->qos_data.qos_active)
1802                 priv->qos_data.def_qos_parm.qos_flags |=
1803                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1804
1805         spin_unlock_irqrestore(&priv->lock, flags);
1806
1807         if (force || iwl3945_is_associated(priv)) {
1808                 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
1809                               priv->qos_data.qos_active);
1810
1811                 iwl3945_send_qos_params_command(priv,
1812                                 &(priv->qos_data.def_qos_parm));
1813         }
1814 }
1815
1816 /*
1817  * Power management (not Tx power!) functions
1818  */
1819 #define MSEC_TO_USEC 1024
1820
1821 #define NOSLP __constant_cpu_to_le32(0)
1822 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
1823 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1824 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1825                                      __constant_cpu_to_le32(X1), \
1826                                      __constant_cpu_to_le32(X2), \
1827                                      __constant_cpu_to_le32(X3), \
1828                                      __constant_cpu_to_le32(X4)}
1829
1830
1831 /* default power management (not Tx power) table values */
1832 /* for tim  0-10 */
1833 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
1834         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1835         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1836         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1837         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1838         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1839         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1840 };
1841
1842 /* for tim > 10 */
1843 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
1844         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1845         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1846                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1847         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1848                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1849         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1850                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1851         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1852         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1853                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1854 };
1855
1856 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
1857 {
1858         int rc = 0, i;
1859         struct iwl3945_power_mgr *pow_data;
1860         int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
1861         u16 pci_pm;
1862
1863         IWL_DEBUG_POWER("Initialize power \n");
1864
1865         pow_data = &(priv->power_data);
1866
1867         memset(pow_data, 0, sizeof(*pow_data));
1868
1869         pow_data->active_index = IWL_POWER_RANGE_0;
1870         pow_data->dtim_val = 0xffff;
1871
1872         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1873         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1874
1875         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1876         if (rc != 0)
1877                 return 0;
1878         else {
1879                 struct iwl3945_powertable_cmd *cmd;
1880
1881                 IWL_DEBUG_POWER("adjust power command flags\n");
1882
1883                 for (i = 0; i < IWL_POWER_AC; i++) {
1884                         cmd = &pow_data->pwr_range_0[i].cmd;
1885
1886                         if (pci_pm & 0x1)
1887                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1888                         else
1889                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1890                 }
1891         }
1892         return rc;
1893 }
1894
1895 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1896                                 struct iwl3945_powertable_cmd *cmd, u32 mode)
1897 {
1898         int rc = 0, i;
1899         u8 skip;
1900         u32 max_sleep = 0;
1901         struct iwl3945_power_vec_entry *range;
1902         u8 period = 0;
1903         struct iwl3945_power_mgr *pow_data;
1904
1905         if (mode > IWL_POWER_INDEX_5) {
1906                 IWL_DEBUG_POWER("Error invalid power mode \n");
1907                 return -1;
1908         }
1909         pow_data = &(priv->power_data);
1910
1911         if (pow_data->active_index == IWL_POWER_RANGE_0)
1912                 range = &pow_data->pwr_range_0[0];
1913         else
1914                 range = &pow_data->pwr_range_1[1];
1915
1916         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1917
1918 #ifdef IWL_MAC80211_DISABLE
1919         if (priv->assoc_network != NULL) {
1920                 unsigned long flags;
1921
1922                 period = priv->assoc_network->tim.tim_period;
1923         }
1924 #endif  /*IWL_MAC80211_DISABLE */
1925         skip = range[mode].no_dtim;
1926
1927         if (period == 0) {
1928                 period = 1;
1929                 skip = 0;
1930         }
1931
1932         if (skip == 0) {
1933                 max_sleep = period;
1934                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1935         } else {
1936                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1937                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1938                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1939         }
1940
1941         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1942                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1943                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1944         }
1945
1946         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1947         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1948         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1949         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1950                         le32_to_cpu(cmd->sleep_interval[0]),
1951                         le32_to_cpu(cmd->sleep_interval[1]),
1952                         le32_to_cpu(cmd->sleep_interval[2]),
1953                         le32_to_cpu(cmd->sleep_interval[3]),
1954                         le32_to_cpu(cmd->sleep_interval[4]));
1955
1956         return rc;
1957 }
1958
1959 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
1960 {
1961         u32 uninitialized_var(final_mode);
1962         int rc;
1963         struct iwl3945_powertable_cmd cmd;
1964
1965         /* If on battery, set to 3,
1966          * if plugged into AC power, set to CAM ("continuously aware mode"),
1967          * else user level */
1968         switch (mode) {
1969         case IWL_POWER_BATTERY:
1970                 final_mode = IWL_POWER_INDEX_3;
1971                 break;
1972         case IWL_POWER_AC:
1973                 final_mode = IWL_POWER_MODE_CAM;
1974                 break;
1975         default:
1976                 final_mode = mode;
1977                 break;
1978         }
1979
1980         iwl3945_update_power_cmd(priv, &cmd, final_mode);
1981
1982         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
1983
1984         if (final_mode == IWL_POWER_MODE_CAM)
1985                 clear_bit(STATUS_POWER_PMI, &priv->status);
1986         else
1987                 set_bit(STATUS_POWER_PMI, &priv->status);
1988
1989         return rc;
1990 }
1991
1992 /**
1993  * iwl3945_scan_cancel - Cancel any currently executing HW scan
1994  *
1995  * NOTE: priv->mutex is not required before calling this function
1996  */
1997 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
1998 {
1999         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2000                 clear_bit(STATUS_SCANNING, &priv->status);
2001                 return 0;
2002         }
2003
2004         if (test_bit(STATUS_SCANNING, &priv->status)) {
2005                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2006                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2007                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2008                         queue_work(priv->workqueue, &priv->abort_scan);
2009
2010                 } else
2011                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2012
2013                 return test_bit(STATUS_SCANNING, &priv->status);
2014         }
2015
2016         return 0;
2017 }
2018
2019 /**
2020  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2021  * @ms: amount of time to wait (in milliseconds) for scan to abort
2022  *
2023  * NOTE: priv->mutex must be held before calling this function
2024  */
2025 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2026 {
2027         unsigned long now = jiffies;
2028         int ret;
2029
2030         ret = iwl3945_scan_cancel(priv);
2031         if (ret && ms) {
2032                 mutex_unlock(&priv->mutex);
2033                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2034                                 test_bit(STATUS_SCANNING, &priv->status))
2035                         msleep(1);
2036                 mutex_lock(&priv->mutex);
2037
2038                 return test_bit(STATUS_SCANNING, &priv->status);
2039         }
2040
2041         return ret;
2042 }
2043
2044 #define MAX_UCODE_BEACON_INTERVAL       1024
2045 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2046
2047 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2048 {
2049         u16 new_val = 0;
2050         u16 beacon_factor = 0;
2051
2052         beacon_factor =
2053             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2054                 / MAX_UCODE_BEACON_INTERVAL;
2055         new_val = beacon_val / beacon_factor;
2056
2057         return cpu_to_le16(new_val);
2058 }
2059
2060 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2061 {
2062         u64 interval_tm_unit;
2063         u64 tsf, result;
2064         unsigned long flags;
2065         struct ieee80211_conf *conf = NULL;
2066         u16 beacon_int = 0;
2067
2068         conf = ieee80211_get_hw_conf(priv->hw);
2069
2070         spin_lock_irqsave(&priv->lock, flags);
2071         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2072         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2073
2074         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2075
2076         tsf = priv->timestamp1;
2077         tsf = ((tsf << 32) | priv->timestamp0);
2078
2079         beacon_int = priv->beacon_int;
2080         spin_unlock_irqrestore(&priv->lock, flags);
2081
2082         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
2083                 if (beacon_int == 0) {
2084                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2085                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2086                 } else {
2087                         priv->rxon_timing.beacon_interval =
2088                                 cpu_to_le16(beacon_int);
2089                         priv->rxon_timing.beacon_interval =
2090                             iwl3945_adjust_beacon_interval(
2091                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2092                 }
2093
2094                 priv->rxon_timing.atim_window = 0;
2095         } else {
2096                 priv->rxon_timing.beacon_interval =
2097                         iwl3945_adjust_beacon_interval(conf->beacon_int);
2098                 /* TODO: we need to get atim_window from upper stack
2099                  * for now we set to 0 */
2100                 priv->rxon_timing.atim_window = 0;
2101         }
2102
2103         interval_tm_unit =
2104                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2105         result = do_div(tsf, interval_tm_unit);
2106         priv->rxon_timing.beacon_init_val =
2107             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2108
2109         IWL_DEBUG_ASSOC
2110             ("beacon interval %d beacon timer %d beacon tim %d\n",
2111                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2112                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2113                 le16_to_cpu(priv->rxon_timing.atim_window));
2114 }
2115
2116 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2117 {
2118         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2119                 IWL_ERROR("APs don't scan.\n");
2120                 return 0;
2121         }
2122
2123         if (!iwl3945_is_ready_rf(priv)) {
2124                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2125                 return -EIO;
2126         }
2127
2128         if (test_bit(STATUS_SCANNING, &priv->status)) {
2129                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2130                 return -EAGAIN;
2131         }
2132
2133         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2134                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2135                                "Queuing.\n");
2136                 return -EAGAIN;
2137         }
2138
2139         IWL_DEBUG_INFO("Starting scan...\n");
2140         if (priv->cfg->sku & IWL_SKU_G)
2141                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
2142         if (priv->cfg->sku & IWL_SKU_A)
2143                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
2144         set_bit(STATUS_SCANNING, &priv->status);
2145         priv->scan_start = jiffies;
2146         priv->scan_pass_start = priv->scan_start;
2147
2148         queue_work(priv->workqueue, &priv->request_scan);
2149
2150         return 0;
2151 }
2152
2153 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2154 {
2155         struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2156
2157         if (hw_decrypt)
2158                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2159         else
2160                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2161
2162         return 0;
2163 }
2164
2165 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
2166                                           enum ieee80211_band band)
2167 {
2168         if (band == IEEE80211_BAND_5GHZ) {
2169                 priv->staging_rxon.flags &=
2170                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2171                       | RXON_FLG_CCK_MSK);
2172                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2173         } else {
2174                 /* Copied from iwl3945_bg_post_associate() */
2175                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2176                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2177                 else
2178                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2179
2180                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2181                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2182
2183                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2184                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2185                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2186         }
2187 }
2188
2189 /*
2190  * initialize rxon structure with default values from eeprom
2191  */
2192 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
2193 {
2194         const struct iwl3945_channel_info *ch_info;
2195
2196         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2197
2198         switch (priv->iw_mode) {
2199         case NL80211_IFTYPE_AP:
2200                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2201                 break;
2202
2203         case NL80211_IFTYPE_STATION:
2204                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2205                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2206                 break;
2207
2208         case NL80211_IFTYPE_ADHOC:
2209                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2210                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2211                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2212                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2213                 break;
2214
2215         case NL80211_IFTYPE_MONITOR:
2216                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2217                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2218                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2219                 break;
2220         default:
2221                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
2222                 break;
2223         }
2224
2225 #if 0
2226         /* TODO:  Figure out when short_preamble would be set and cache from
2227          * that */
2228         if (!hw_to_local(priv->hw)->short_preamble)
2229                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2230         else
2231                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2232 #endif
2233
2234         ch_info = iwl3945_get_channel_info(priv, priv->band,
2235                                        le16_to_cpu(priv->active_rxon.channel));
2236
2237         if (!ch_info)
2238                 ch_info = &priv->channel_info[0];
2239
2240         /*
2241          * in some case A channels are all non IBSS
2242          * in this case force B/G channel
2243          */
2244         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
2245             !(is_channel_ibss(ch_info)))
2246                 ch_info = &priv->channel_info[0];
2247
2248         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2249         if (is_channel_a_band(ch_info))
2250                 priv->band = IEEE80211_BAND_5GHZ;
2251         else
2252                 priv->band = IEEE80211_BAND_2GHZ;
2253
2254         iwl3945_set_flags_for_phymode(priv, priv->band);
2255
2256         priv->staging_rxon.ofdm_basic_rates =
2257             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2258         priv->staging_rxon.cck_basic_rates =
2259             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2260 }
2261
2262 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2263 {
2264         if (mode == NL80211_IFTYPE_ADHOC) {
2265                 const struct iwl3945_channel_info *ch_info;
2266
2267                 ch_info = iwl3945_get_channel_info(priv,
2268                         priv->band,
2269                         le16_to_cpu(priv->staging_rxon.channel));
2270
2271                 if (!ch_info || !is_channel_ibss(ch_info)) {
2272                         IWL_ERROR("channel %d not IBSS channel\n",
2273                                   le16_to_cpu(priv->staging_rxon.channel));
2274                         return -EINVAL;
2275                 }
2276         }
2277
2278         priv->iw_mode = mode;
2279
2280         iwl3945_connection_init_rx_config(priv);
2281         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2282
2283         iwl3945_clear_stations_table(priv);
2284
2285         /* dont commit rxon if rf-kill is on*/
2286         if (!iwl3945_is_ready_rf(priv))
2287                 return -EAGAIN;
2288
2289         cancel_delayed_work(&priv->scan_check);
2290         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2291                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2292                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2293                 return -EAGAIN;
2294         }
2295
2296         iwl3945_commit_rxon(priv);
2297
2298         return 0;
2299 }
2300
2301 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2302                                       struct ieee80211_tx_info *info,
2303                                       struct iwl3945_cmd *cmd,
2304                                       struct sk_buff *skb_frag,
2305                                       int last_frag)
2306 {
2307         struct iwl3945_hw_key *keyinfo =
2308             &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
2309
2310         switch (keyinfo->alg) {
2311         case ALG_CCMP:
2312                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2313                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2314                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2315                 break;
2316
2317         case ALG_TKIP:
2318 #if 0
2319                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2320
2321                 if (last_frag)
2322                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2323                                8);
2324                 else
2325                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2326 #endif
2327                 break;
2328
2329         case ALG_WEP:
2330                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2331                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2332
2333                 if (keyinfo->keylen == 13)
2334                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2335
2336                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2337
2338                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2339                              "with key %d\n", info->control.hw_key->hw_key_idx);
2340                 break;
2341
2342         default:
2343                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2344                 break;
2345         }
2346 }
2347
2348 /*
2349  * handle build REPLY_TX command notification.
2350  */
2351 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2352                                   struct iwl3945_cmd *cmd,
2353                                   struct ieee80211_tx_info *info,
2354                                   struct ieee80211_hdr *hdr,
2355                                   int is_unicast, u8 std_id)
2356 {
2357         __le16 fc = hdr->frame_control;
2358         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2359         u8 rc_flags = info->control.rates[0].flags;
2360
2361         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2362         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
2363                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2364                 if (ieee80211_is_mgmt(fc))
2365                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2366                 if (ieee80211_is_probe_resp(fc) &&
2367                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2368                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2369         } else {
2370                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2371                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2372         }
2373
2374         cmd->cmd.tx.sta_id = std_id;
2375         if (ieee80211_has_morefrags(fc))
2376                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2377
2378         if (ieee80211_is_data_qos(fc)) {
2379                 u8 *qc = ieee80211_get_qos_ctl(hdr);
2380                 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
2381                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2382         } else {
2383                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2384         }
2385
2386         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
2387                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2388                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2389         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
2390                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2391                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2392         }
2393
2394         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2395                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2396
2397         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2398         if (ieee80211_is_mgmt(fc)) {
2399                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2400                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2401                 else
2402                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2403         } else {
2404                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2405 #ifdef CONFIG_IWL3945_LEDS
2406                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2407 #endif
2408         }
2409
2410         cmd->cmd.tx.driver_txop = 0;
2411         cmd->cmd.tx.tx_flags = tx_flags;
2412         cmd->cmd.tx.next_frame_len = 0;
2413 }
2414
2415 /**
2416  * iwl3945_get_sta_id - Find station's index within station table
2417  */
2418 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2419 {
2420         int sta_id;
2421         u16 fc = le16_to_cpu(hdr->frame_control);
2422
2423         /* If this frame is broadcast or management, use broadcast station id */
2424         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2425             is_multicast_ether_addr(hdr->addr1))
2426                 return priv->hw_setting.bcast_sta_id;
2427
2428         switch (priv->iw_mode) {
2429
2430         /* If we are a client station in a BSS network, use the special
2431          * AP station entry (that's the only station we communicate with) */
2432         case NL80211_IFTYPE_STATION:
2433                 return IWL_AP_ID;
2434
2435         /* If we are an AP, then find the station, or use BCAST */
2436         case NL80211_IFTYPE_AP:
2437                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2438                 if (sta_id != IWL_INVALID_STATION)
2439                         return sta_id;
2440                 return priv->hw_setting.bcast_sta_id;
2441
2442         /* If this frame is going out to an IBSS network, find the station,
2443          * or create a new station table entry */
2444         case NL80211_IFTYPE_ADHOC: {
2445                 /* Create new station table entry */
2446                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2447                 if (sta_id != IWL_INVALID_STATION)
2448                         return sta_id;
2449
2450                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2451
2452                 if (sta_id != IWL_INVALID_STATION)
2453                         return sta_id;
2454
2455                 IWL_DEBUG_DROP("Station %pM not in station map. "
2456                                "Defaulting to broadcast...\n",
2457                                hdr->addr1);
2458                 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2459                 return priv->hw_setting.bcast_sta_id;
2460         }
2461         /* If we are in monitor mode, use BCAST. This is required for
2462          * packet injection. */
2463         case NL80211_IFTYPE_MONITOR:
2464                 return priv->hw_setting.bcast_sta_id;
2465
2466         default:
2467                 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
2468                 return priv->hw_setting.bcast_sta_id;
2469         }
2470 }
2471
2472 /*
2473  * start REPLY_TX command process
2474  */
2475 static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
2476 {
2477         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2478         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2479         struct iwl3945_tfd_frame *tfd;
2480         u32 *control_flags;
2481         int txq_id = skb_get_queue_mapping(skb);
2482         struct iwl3945_tx_queue *txq = NULL;
2483         struct iwl3945_queue *q = NULL;
2484         dma_addr_t phys_addr;
2485         dma_addr_t txcmd_phys;
2486         struct iwl3945_cmd *out_cmd = NULL;
2487         u16 len, idx, len_org, hdr_len;
2488         u8 id;
2489         u8 unicast;
2490         u8 sta_id;
2491         u8 tid = 0;
2492         u16 seq_number = 0;
2493         __le16 fc;
2494         u8 wait_write_ptr = 0;
2495         u8 *qc = NULL;
2496         unsigned long flags;
2497         int rc;
2498
2499         spin_lock_irqsave(&priv->lock, flags);
2500         if (iwl3945_is_rfkill(priv)) {
2501                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2502                 goto drop_unlock;
2503         }
2504
2505         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2506                 IWL_ERROR("ERROR: No TX rate available.\n");
2507                 goto drop_unlock;
2508         }
2509
2510         unicast = !is_multicast_ether_addr(hdr->addr1);
2511         id = 0;
2512
2513         fc = hdr->frame_control;
2514
2515 #ifdef CONFIG_IWL3945_DEBUG
2516         if (ieee80211_is_auth(fc))
2517                 IWL_DEBUG_TX("Sending AUTH frame\n");
2518         else if (ieee80211_is_assoc_req(fc))
2519                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2520         else if (ieee80211_is_reassoc_req(fc))
2521                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2522 #endif
2523
2524         /* drop all data frame if we are not associated */
2525         if (ieee80211_is_data(fc) &&
2526             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2527             (!iwl3945_is_associated(priv) ||
2528              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
2529                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2530                 goto drop_unlock;
2531         }
2532
2533         spin_unlock_irqrestore(&priv->lock, flags);
2534
2535         hdr_len = ieee80211_hdrlen(fc);
2536
2537         /* Find (or create) index into station table for destination station */
2538         sta_id = iwl3945_get_sta_id(priv, hdr);
2539         if (sta_id == IWL_INVALID_STATION) {
2540                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
2541                                hdr->addr1);
2542                 goto drop;
2543         }
2544
2545         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2546
2547         if (ieee80211_is_data_qos(fc)) {
2548                 qc = ieee80211_get_qos_ctl(hdr);
2549                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
2550                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2551                                 IEEE80211_SCTL_SEQ;
2552                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2553                         (hdr->seq_ctrl &
2554                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2555                 seq_number += 0x10;
2556         }
2557
2558         /* Descriptor for chosen Tx queue */
2559         txq = &priv->txq[txq_id];
2560         q = &txq->q;
2561
2562         spin_lock_irqsave(&priv->lock, flags);
2563
2564         /* Set up first empty TFD within this queue's circular TFD buffer */
2565         tfd = &txq->bd[q->write_ptr];
2566         memset(tfd, 0, sizeof(*tfd));
2567         control_flags = (u32 *) tfd;
2568         idx = get_cmd_index(q, q->write_ptr, 0);
2569
2570         /* Set up driver data for this TFD */
2571         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2572         txq->txb[q->write_ptr].skb[0] = skb;
2573
2574         /* Init first empty entry in queue's array of Tx/cmd buffers */
2575         out_cmd = &txq->cmd[idx];
2576         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2577         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2578
2579         /*
2580          * Set up the Tx-command (not MAC!) header.
2581          * Store the chosen Tx queue and TFD index within the sequence field;
2582          * after Tx, uCode's Tx response will return this value so driver can
2583          * locate the frame within the tx queue and do post-tx processing.
2584          */
2585         out_cmd->hdr.cmd = REPLY_TX;
2586         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2587                                 INDEX_TO_SEQ(q->write_ptr)));
2588
2589         /* Copy MAC header from skb into command buffer */
2590         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2591
2592         /*
2593          * Use the first empty entry in this queue's command buffer array
2594          * to contain the Tx command and MAC header concatenated together
2595          * (payload data will be in another buffer).
2596          * Size of this varies, due to varying MAC header length.
2597          * If end is not dword aligned, we'll have 2 extra bytes at the end
2598          * of the MAC header (device reads on dword boundaries).
2599          * We'll tell device about this padding later.
2600          */
2601         len = priv->hw_setting.tx_cmd_len +
2602                 sizeof(struct iwl3945_cmd_header) + hdr_len;
2603
2604         len_org = len;
2605         len = (len + 3) & ~3;
2606
2607         if (len_org != len)
2608                 len_org = 1;
2609         else
2610                 len_org = 0;
2611
2612         /* Physical address of this Tx command's header (not MAC header!),
2613          * within command buffer array. */
2614         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2615                      offsetof(struct iwl3945_cmd, hdr);
2616
2617         /* Add buffer containing Tx command and MAC(!) header to TFD's
2618          * first entry */
2619         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2620
2621         if (info->control.hw_key)
2622                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2623
2624         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2625          * if any (802.11 null frames have no payload). */
2626         len = skb->len - hdr_len;
2627         if (len) {
2628                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2629                                            len, PCI_DMA_TODEVICE);
2630                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2631         }
2632
2633         if (!len)
2634                 /* If there is no payload, then we use only one Tx buffer */
2635                 *control_flags = TFD_CTL_COUNT_SET(1);
2636         else
2637                 /* Else use 2 buffers.
2638                  * Tell 3945 about any padding after MAC header */
2639                 *control_flags = TFD_CTL_COUNT_SET(2) |
2640                         TFD_CTL_PAD_SET(U32_PAD(len));
2641
2642         /* Total # bytes to be transmitted */
2643         len = (u16)skb->len;
2644         out_cmd->cmd.tx.len = cpu_to_le16(len);
2645
2646         /* TODO need this for burst mode later on */
2647         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
2648
2649         /* set is_hcca to 0; it probably will never be implemented */
2650         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2651
2652         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2653         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2654
2655         if (!ieee80211_has_morefrags(hdr->frame_control)) {
2656                 txq->need_update = 1;
2657                 if (qc)
2658                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2659         } else {
2660                 wait_write_ptr = 1;
2661                 txq->need_update = 0;
2662         }
2663
2664         iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2665                            sizeof(out_cmd->cmd.tx));
2666
2667         iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2668                            ieee80211_hdrlen(fc));
2669
2670         /* Tell device the write index *just past* this latest filled TFD */
2671         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2672         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2673         spin_unlock_irqrestore(&priv->lock, flags);
2674
2675         if (rc)
2676                 return rc;
2677
2678         if ((iwl3945_queue_space(q) < q->high_mark)
2679             && priv->mac80211_registered) {
2680                 if (wait_write_ptr) {
2681                         spin_lock_irqsave(&priv->lock, flags);
2682                         txq->need_update = 1;
2683                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2684                         spin_unlock_irqrestore(&priv->lock, flags);
2685                 }
2686
2687                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2688         }
2689
2690         return 0;
2691
2692 drop_unlock:
2693         spin_unlock_irqrestore(&priv->lock, flags);
2694 drop:
2695         return -1;
2696 }
2697
2698 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2699 {
2700         const struct ieee80211_supported_band *sband = NULL;
2701         struct ieee80211_rate *rate;
2702         int i;
2703
2704         sband = iwl3945_get_band(priv, priv->band);
2705         if (!sband) {
2706                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2707                 return;
2708         }
2709
2710         priv->active_rate = 0;
2711         priv->active_rate_basic = 0;
2712
2713         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2714                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2715
2716         for (i = 0; i < sband->n_bitrates; i++) {
2717                 rate = &sband->bitrates[i];
2718                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2719                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2720                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2721                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2722                         priv->active_rate |= (1 << rate->hw_value);
2723                 }
2724         }
2725
2726         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2727                        priv->active_rate, priv->active_rate_basic);
2728
2729         /*
2730          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2731          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2732          * OFDM
2733          */
2734         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2735                 priv->staging_rxon.cck_basic_rates =
2736                     ((priv->active_rate_basic &
2737                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2738         else
2739                 priv->staging_rxon.cck_basic_rates =
2740                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2741
2742         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2743                 priv->staging_rxon.ofdm_basic_rates =
2744                     ((priv->active_rate_basic &
2745                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2746                       IWL_FIRST_OFDM_RATE) & 0xFF;
2747         else
2748                 priv->staging_rxon.ofdm_basic_rates =
2749                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2750 }
2751
2752 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
2753 {
2754         unsigned long flags;
2755
2756         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2757                 return;
2758
2759         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2760                           disable_radio ? "OFF" : "ON");
2761
2762         if (disable_radio) {
2763                 iwl3945_scan_cancel(priv);
2764                 /* FIXME: This is a workaround for AP */
2765                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2766                         spin_lock_irqsave(&priv->lock, flags);
2767                         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
2768                                     CSR_UCODE_SW_BIT_RFKILL);
2769                         spin_unlock_irqrestore(&priv->lock, flags);
2770                         iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2771                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2772                 }
2773                 return;
2774         }
2775
2776         spin_lock_irqsave(&priv->lock, flags);
2777         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2778
2779         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2780         spin_unlock_irqrestore(&priv->lock, flags);
2781
2782         /* wake up ucode */
2783         msleep(10);
2784
2785         spin_lock_irqsave(&priv->lock, flags);
2786         iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
2787         if (!iwl3945_grab_nic_access(priv))
2788                 iwl3945_release_nic_access(priv);
2789         spin_unlock_irqrestore(&priv->lock, flags);
2790
2791         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2792                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2793                                   "disabled by HW switch\n");
2794                 return;
2795         }
2796
2797         if (priv->is_open)
2798                 queue_work(priv->workqueue, &priv->restart);
2799         return;
2800 }
2801
2802 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
2803                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2804 {
2805         u16 fc =
2806             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2807
2808         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2809                 return;
2810
2811         if (!(fc & IEEE80211_FCTL_PROTECTED))
2812                 return;
2813
2814         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2815         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2816         case RX_RES_STATUS_SEC_TYPE_TKIP:
2817                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2818                     RX_RES_STATUS_BAD_ICV_MIC)
2819                         stats->flag |= RX_FLAG_MMIC_ERROR;
2820         case RX_RES_STATUS_SEC_TYPE_WEP:
2821         case RX_RES_STATUS_SEC_TYPE_CCMP:
2822                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2823                     RX_RES_STATUS_DECRYPT_OK) {
2824                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2825                         stats->flag |= RX_FLAG_DECRYPTED;
2826                 }
2827                 break;
2828
2829         default:
2830                 break;
2831         }
2832 }
2833
2834 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2835
2836 #include "iwl-spectrum.h"
2837
2838 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2839 #define BEACON_TIME_MASK_HIGH   0xFF000000
2840 #define TIME_UNIT               1024
2841
2842 /*
2843  * extended beacon time format
2844  * time in usec will be changed into a 32-bit value in 8:24 format
2845  * the high 1 byte is the beacon counts
2846  * the lower 3 bytes is the time in usec within one beacon interval
2847  */
2848
2849 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2850 {
2851         u32 quot;
2852         u32 rem;
2853         u32 interval = beacon_interval * 1024;
2854
2855         if (!interval || !usec)
2856                 return 0;
2857
2858         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2859         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2860
2861         return (quot << 24) + rem;
2862 }
2863
2864 /* base is usually what we get from ucode with each received frame,
2865  * the same as HW timer counter counting down
2866  */
2867
2868 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2869 {
2870         u32 base_low = base & BEACON_TIME_MASK_LOW;
2871         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2872         u32 interval = beacon_interval * TIME_UNIT;
2873         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2874             (addon & BEACON_TIME_MASK_HIGH);
2875
2876         if (base_low > addon_low)
2877                 res += base_low - addon_low;
2878         else if (base_low < addon_low) {
2879                 res += interval + base_low - addon_low;
2880                 res += (1 << 24);
2881         } else
2882                 res += (1 << 24);
2883
2884         return cpu_to_le32(res);
2885 }
2886
2887 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
2888                                struct ieee80211_measurement_params *params,
2889                                u8 type)
2890 {
2891         struct iwl3945_spectrum_cmd spectrum;
2892         struct iwl3945_rx_packet *res;
2893         struct iwl3945_host_cmd cmd = {
2894                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2895                 .data = (void *)&spectrum,
2896                 .meta.flags = CMD_WANT_SKB,
2897         };
2898         u32 add_time = le64_to_cpu(params->start_time);
2899         int rc;
2900         int spectrum_resp_status;
2901         int duration = le16_to_cpu(params->duration);
2902
2903         if (iwl3945_is_associated(priv))
2904                 add_time =
2905                     iwl3945_usecs_to_beacons(
2906                         le64_to_cpu(params->start_time) - priv->last_tsf,
2907                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2908
2909         memset(&spectrum, 0, sizeof(spectrum));
2910
2911         spectrum.channel_count = cpu_to_le16(1);
2912         spectrum.flags =
2913             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2914         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2915         cmd.len = sizeof(spectrum);
2916         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2917
2918         if (iwl3945_is_associated(priv))
2919                 spectrum.start_time =
2920                     iwl3945_add_beacon_time(priv->last_beacon_time,
2921                                 add_time,
2922                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2923         else
2924                 spectrum.start_time = 0;
2925
2926         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2927         spectrum.channels[0].channel = params->channel;
2928         spectrum.channels[0].type = type;
2929         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2930                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2931                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2932
2933         rc = iwl3945_send_cmd_sync(priv, &cmd);
2934         if (rc)
2935                 return rc;
2936
2937         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
2938         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2939                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2940                 rc = -EIO;
2941         }
2942
2943         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2944         switch (spectrum_resp_status) {
2945         case 0:         /* Command will be handled */
2946                 if (res->u.spectrum.id != 0xff) {
2947                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2948                                                 res->u.spectrum.id);
2949                         priv->measurement_status &= ~MEASUREMENT_READY;
2950                 }
2951                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2952                 rc = 0;
2953                 break;
2954
2955         case 1:         /* Command will not be handled */
2956                 rc = -EAGAIN;
2957                 break;
2958         }
2959
2960         dev_kfree_skb_any(cmd.meta.u.skb);
2961
2962         return rc;
2963 }
2964 #endif
2965
2966 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
2967                                struct iwl3945_rx_mem_buffer *rxb)
2968 {
2969         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
2970         struct iwl3945_alive_resp *palive;
2971         struct delayed_work *pwork;
2972
2973         palive = &pkt->u.alive_frame;
2974
2975         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2976                        "0x%01X 0x%01X\n",
2977                        palive->is_valid, palive->ver_type,
2978                        palive->ver_subtype);
2979
2980         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2981                 IWL_DEBUG_INFO("Initialization Alive received.\n");
2982                 memcpy(&priv->card_alive_init,
2983                        &pkt->u.alive_frame,
2984                        sizeof(struct iwl3945_init_alive_resp));
2985                 pwork = &priv->init_alive_start;
2986         } else {
2987                 IWL_DEBUG_INFO("Runtime Alive received.\n");
2988                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2989                        sizeof(struct iwl3945_alive_resp));
2990                 pwork = &priv->alive_start;
2991                 iwl3945_disable_events(priv);
2992         }
2993
2994         /* We delay the ALIVE response by 5ms to
2995          * give the HW RF Kill time to activate... */
2996         if (palive->is_valid == UCODE_VALID_OK)
2997                 queue_delayed_work(priv->workqueue, pwork,
2998                                    msecs_to_jiffies(5));
2999         else
3000                 IWL_WARNING("uCode did not respond OK.\n");
3001 }
3002
3003 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
3004                                  struct iwl3945_rx_mem_buffer *rxb)
3005 {
3006         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3007
3008         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3009         return;
3010 }
3011
3012 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
3013                                struct iwl3945_rx_mem_buffer *rxb)
3014 {
3015         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3016
3017         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3018                 "seq 0x%04X ser 0x%08X\n",
3019                 le32_to_cpu(pkt->u.err_resp.error_type),
3020                 get_cmd_string(pkt->u.err_resp.cmd_id),
3021                 pkt->u.err_resp.cmd_id,
3022                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3023                 le32_to_cpu(pkt->u.err_resp.error_info));
3024 }
3025
3026 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3027
3028 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3029 {
3030         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3031         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3032         struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
3033         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3034                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3035         rxon->channel = csa->channel;
3036         priv->staging_rxon.channel = csa->channel;
3037 }
3038
3039 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3040                                           struct iwl3945_rx_mem_buffer *rxb)
3041 {
3042 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3043         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3044         struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
3045
3046         if (!report->state) {
3047                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3048                           "Spectrum Measure Notification: Start\n");
3049                 return;
3050         }
3051
3052         memcpy(&priv->measure_report, report, sizeof(*report));
3053         priv->measurement_status |= MEASUREMENT_READY;
3054 #endif
3055 }
3056
3057 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3058                                   struct iwl3945_rx_mem_buffer *rxb)
3059 {
3060 #ifdef CONFIG_IWL3945_DEBUG
3061         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3062         struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
3063         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3064                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3065 #endif
3066 }
3067
3068 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3069                                              struct iwl3945_rx_mem_buffer *rxb)
3070 {
3071         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3072         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3073                         "notification for %s:\n",
3074                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3075         iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3076 }
3077
3078 static void iwl3945_bg_beacon_update(struct work_struct *work)
3079 {
3080         struct iwl3945_priv *priv =
3081                 container_of(work, struct iwl3945_priv, beacon_update);
3082         struct sk_buff *beacon;
3083
3084         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3085         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
3086
3087         if (!beacon) {
3088                 IWL_ERROR("update beacon failed\n");
3089                 return;
3090         }
3091
3092         mutex_lock(&priv->mutex);
3093         /* new beacon skb is allocated every time; dispose previous.*/
3094         if (priv->ibss_beacon)
3095                 dev_kfree_skb(priv->ibss_beacon);
3096
3097         priv->ibss_beacon = beacon;
3098         mutex_unlock(&priv->mutex);
3099
3100         iwl3945_send_beacon_cmd(priv);
3101 }
3102
3103 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3104                                 struct iwl3945_rx_mem_buffer *rxb)
3105 {
3106 #ifdef CONFIG_IWL3945_DEBUG
3107         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3108         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3109         u8 rate = beacon->beacon_notify_hdr.rate;
3110
3111         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3112                 "tsf %d %d rate %d\n",
3113                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3114                 beacon->beacon_notify_hdr.failure_frame,
3115                 le32_to_cpu(beacon->ibss_mgr_status),
3116                 le32_to_cpu(beacon->high_tsf),
3117                 le32_to_cpu(beacon->low_tsf), rate);
3118 #endif
3119
3120         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
3121             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3122                 queue_work(priv->workqueue, &priv->beacon_update);
3123 }
3124
3125 /* Service response to REPLY_SCAN_CMD (0x80) */
3126 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3127                               struct iwl3945_rx_mem_buffer *rxb)
3128 {
3129 #ifdef CONFIG_IWL3945_DEBUG
3130         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3131         struct iwl3945_scanreq_notification *notif =
3132             (struct iwl3945_scanreq_notification *)pkt->u.raw;
3133
3134         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3135 #endif
3136 }
3137
3138 /* Service SCAN_START_NOTIFICATION (0x82) */
3139 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3140                                     struct iwl3945_rx_mem_buffer *rxb)
3141 {
3142         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3143         struct iwl3945_scanstart_notification *notif =
3144             (struct iwl3945_scanstart_notification *)pkt->u.raw;
3145         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3146         IWL_DEBUG_SCAN("Scan start: "
3147                        "%d [802.11%s] "
3148                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3149                        notif->channel,
3150                        notif->band ? "bg" : "a",
3151                        notif->tsf_high,
3152                        notif->tsf_low, notif->status, notif->beacon_timer);
3153 }
3154
3155 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3156 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3157                                       struct iwl3945_rx_mem_buffer *rxb)
3158 {
3159         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3160         struct iwl3945_scanresults_notification *notif =
3161             (struct iwl3945_scanresults_notification *)pkt->u.raw;
3162
3163         IWL_DEBUG_SCAN("Scan ch.res: "
3164                        "%d [802.11%s] "
3165                        "(TSF: 0x%08X:%08X) - %d "
3166                        "elapsed=%lu usec (%dms since last)\n",
3167                        notif->channel,
3168                        notif->band ? "bg" : "a",
3169                        le32_to_cpu(notif->tsf_high),
3170                        le32_to_cpu(notif->tsf_low),
3171                        le32_to_cpu(notif->statistics[0]),
3172                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3173                        jiffies_to_msecs(elapsed_jiffies
3174                                         (priv->last_scan_jiffies, jiffies)));
3175
3176         priv->last_scan_jiffies = jiffies;
3177         priv->next_scan_jiffies = 0;
3178 }
3179
3180 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3181 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3182                                        struct iwl3945_rx_mem_buffer *rxb)
3183 {
3184         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3185         struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3186
3187         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3188                        scan_notif->scanned_channels,
3189                        scan_notif->tsf_low,
3190                        scan_notif->tsf_high, scan_notif->status);
3191
3192         /* The HW is no longer scanning */
3193         clear_bit(STATUS_SCAN_HW, &priv->status);
3194
3195         /* The scan completion notification came in, so kill that timer... */
3196         cancel_delayed_work(&priv->scan_check);
3197
3198         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3199                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3200                                                         "2.4" : "5.2",
3201                        jiffies_to_msecs(elapsed_jiffies
3202                                         (priv->scan_pass_start, jiffies)));
3203
3204         /* Remove this scanned band from the list of pending
3205          * bands to scan, band G precedes A in order of scanning
3206          * as seen in iwl3945_bg_request_scan */
3207         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3208                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3209         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
3210                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
3211
3212         /* If a request to abort was given, or the scan did not succeed
3213          * then we reset the scan state machine and terminate,
3214          * re-queuing another scan if one has been requested */
3215         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3216                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3217                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3218         } else {
3219                 /* If there are more bands on this scan pass reschedule */
3220                 if (priv->scan_bands > 0)
3221                         goto reschedule;
3222         }
3223
3224         priv->last_scan_jiffies = jiffies;
3225         priv->next_scan_jiffies = 0;
3226         IWL_DEBUG_INFO("Setting scan to off\n");
3227
3228         clear_bit(STATUS_SCANNING, &priv->status);
3229
3230         IWL_DEBUG_INFO("Scan took %dms\n",
3231                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3232
3233         queue_work(priv->workqueue, &priv->scan_completed);
3234
3235         return;
3236
3237 reschedule:
3238         priv->scan_pass_start = jiffies;
3239         queue_work(priv->workqueue, &priv->request_scan);
3240 }
3241
3242 /* Handle notification from uCode that card's power state is changing
3243  * due to software, hardware, or critical temperature RFKILL */
3244 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3245                                     struct iwl3945_rx_mem_buffer *rxb)
3246 {
3247         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3248         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3249         unsigned long status = priv->status;
3250
3251         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3252                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3253                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3254
3255         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3256                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3257
3258         if (flags & HW_CARD_DISABLED)
3259                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3260         else
3261                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3262
3263
3264         if (flags & SW_CARD_DISABLED)
3265                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3266         else
3267                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3268
3269         iwl3945_scan_cancel(priv);
3270
3271         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3272              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3273             (test_bit(STATUS_RF_KILL_SW, &status) !=
3274              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3275                 queue_work(priv->workqueue, &priv->rf_kill);
3276         else
3277                 wake_up_interruptible(&priv->wait_command_queue);
3278 }
3279
3280 /**
3281  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3282  *
3283  * Setup the RX handlers for each of the reply types sent from the uCode
3284  * to the host.
3285  *
3286  * This function chains into the hardware specific files for them to setup
3287  * any hardware specific handlers as well.
3288  */
3289 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3290 {
3291         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3292         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3293         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3294         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3295         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3296             iwl3945_rx_spectrum_measure_notif;
3297         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3298         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3299             iwl3945_rx_pm_debug_statistics_notif;
3300         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3301
3302         /*
3303          * The same handler is used for both the REPLY to a discrete
3304          * statistics request from the host as well as for the periodic
3305          * statistics notifications (after received beacons) from the uCode.
3306          */
3307         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3308         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3309
3310         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3311         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3312         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3313             iwl3945_rx_scan_results_notif;
3314         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3315             iwl3945_rx_scan_complete_notif;
3316         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3317
3318         /* Set up hardware specific Rx handlers */
3319         iwl3945_hw_rx_handler_setup(priv);
3320 }
3321
3322 /**
3323  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3324  * When FW advances 'R' index, all entries between old and new 'R' index
3325  * need to be reclaimed.
3326  */
3327 static void iwl3945_cmd_queue_reclaim(struct iwl3945_priv *priv,
3328                                       int txq_id, int index)
3329 {
3330         struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3331         struct iwl3945_queue *q = &txq->q;
3332         int nfreed = 0;
3333
3334         if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3335                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3336                           "is out of range [0-%d] %d %d.\n", txq_id,
3337                           index, q->n_bd, q->write_ptr, q->read_ptr);
3338                 return;
3339         }
3340
3341         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3342                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3343                 if (nfreed > 1) {
3344                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3345                                         q->write_ptr, q->read_ptr);
3346                         queue_work(priv->workqueue, &priv->restart);
3347                         break;
3348                 }
3349                 nfreed++;
3350         }
3351 }
3352
3353
3354 /**
3355  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3356  * @rxb: Rx buffer to reclaim
3357  *
3358  * If an Rx buffer has an async callback associated with it the callback
3359  * will be executed.  The attached skb (if present) will only be freed
3360  * if the callback returns 1
3361  */
3362 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3363                                 struct iwl3945_rx_mem_buffer *rxb)
3364 {
3365         struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3366         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3367         int txq_id = SEQ_TO_QUEUE(sequence);
3368         int index = SEQ_TO_INDEX(sequence);
3369         int huge = sequence & SEQ_HUGE_FRAME;
3370         int cmd_index;
3371         struct iwl3945_cmd *cmd;
3372
3373         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3374
3375         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3376         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3377
3378         /* Input error checking is done when commands are added to queue. */
3379         if (cmd->meta.flags & CMD_WANT_SKB) {
3380                 cmd->meta.source->u.skb = rxb->skb;
3381                 rxb->skb = NULL;
3382         } else if (cmd->meta.u.callback &&
3383                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3384                 rxb->skb = NULL;
3385
3386         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
3387
3388         if (!(cmd->meta.flags & CMD_ASYNC)) {
3389                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3390                 wake_up_interruptible(&priv->wait_command_queue);
3391         }
3392 }
3393
3394 /************************** RX-FUNCTIONS ****************************/
3395 /*
3396  * Rx theory of operation
3397  *
3398  * The host allocates 32 DMA target addresses and passes the host address
3399  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3400  * 0 to 31
3401  *
3402  * Rx Queue Indexes
3403  * The host/firmware share two index registers for managing the Rx buffers.
3404  *
3405  * The READ index maps to the first position that the firmware may be writing
3406  * to -- the driver can read up to (but not including) this position and get
3407  * good data.
3408  * The READ index is managed by the firmware once the card is enabled.
3409  *
3410  * The WRITE index maps to the last position the driver has read from -- the
3411  * position preceding WRITE is the last slot the firmware can place a packet.
3412  *
3413  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3414  * WRITE = READ.
3415  *
3416  * During initialization, the host sets up the READ queue position to the first
3417  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3418  *
3419  * When the firmware places a packet in a buffer, it will advance the READ index
3420  * and fire the RX interrupt.  The driver can then query the READ index and
3421  * process as many packets as possible, moving the WRITE index forward as it
3422  * resets the Rx queue buffers with new memory.
3423  *
3424  * The management in the driver is as follows:
3425  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3426  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3427  *   to replenish the iwl->rxq->rx_free.
3428  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3429  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3430  *   'processed' and 'read' driver indexes as well)
3431  * + A received packet is processed and handed to the kernel network stack,
3432  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3433  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3434  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3435  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3436  *   were enough free buffers and RX_STALLED is set it is cleared.
3437  *
3438  *
3439  * Driver sequence:
3440  *
3441  * iwl3945_rx_queue_alloc()   Allocates rx_free
3442  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3443  *                            iwl3945_rx_queue_restock
3444  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3445  *                            queue, updates firmware pointers, and updates
3446  *                            the WRITE index.  If insufficient rx_free buffers
3447  *                            are available, schedules iwl3945_rx_replenish
3448  *
3449  * -- enable interrupts --
3450  * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
3451  *                            READ INDEX, detaching the SKB from the pool.
3452  *                            Moves the packet buffer from queue to rx_used.
3453  *                            Calls iwl3945_rx_queue_restock to refill any empty
3454  *                            slots.
3455  * ...
3456  *
3457  */
3458
3459 /**
3460  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3461  */
3462 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3463 {
3464         int s = q->read - q->write;
3465         if (s <= 0)
3466                 s += RX_QUEUE_SIZE;
3467         /* keep some buffer to not confuse full and empty queue */
3468         s -= 2;
3469         if (s < 0)
3470                 s = 0;
3471         return s;
3472 }
3473
3474 /**
3475  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3476  */
3477 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
3478 {
3479         u32 reg = 0;
3480         int rc = 0;
3481         unsigned long flags;
3482
3483         spin_lock_irqsave(&q->lock, flags);
3484
3485         if (q->need_update == 0)
3486                 goto exit_unlock;
3487
3488         /* If power-saving is in use, make sure device is awake */
3489         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3490                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3491
3492                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3493                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
3494                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3495                         goto exit_unlock;
3496                 }
3497
3498                 rc = iwl3945_grab_nic_access(priv);
3499                 if (rc)
3500                         goto exit_unlock;
3501
3502                 /* Device expects a multiple of 8 */
3503                 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3504                                      q->write & ~0x7);
3505                 iwl3945_release_nic_access(priv);
3506
3507         /* Else device is assumed to be awake */
3508         } else
3509                 /* Device expects a multiple of 8 */
3510                 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3511
3512
3513         q->need_update = 0;
3514
3515  exit_unlock:
3516         spin_unlock_irqrestore(&q->lock, flags);
3517         return rc;
3518 }
3519
3520 /**
3521  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3522  */
3523 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
3524                                           dma_addr_t dma_addr)
3525 {
3526         return cpu_to_le32((u32)dma_addr);
3527 }
3528
3529 /**
3530  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3531  *
3532  * If there are slots in the RX queue that need to be restocked,
3533  * and we have free pre-allocated buffers, fill the ranks as much
3534  * as we can, pulling from rx_free.
3535  *
3536  * This moves the 'write' index forward to catch up with 'processed', and
3537  * also updates the memory address in the firmware to reference the new
3538  * target buffer.
3539  */
3540 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
3541 {
3542         struct iwl3945_rx_queue *rxq = &priv->rxq;
3543         struct list_head *element;
3544         struct iwl3945_rx_mem_buffer *rxb;
3545         unsigned long flags;
3546         int write, rc;
3547
3548         spin_lock_irqsave(&rxq->lock, flags);
3549         write = rxq->write & ~0x7;
3550         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3551                 /* Get next free Rx buffer, remove from free list */
3552                 element = rxq->rx_free.next;
3553                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3554                 list_del(element);
3555
3556                 /* Point to Rx buffer via next RBD in circular buffer */
3557                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3558                 rxq->queue[rxq->write] = rxb;
3559                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3560                 rxq->free_count--;
3561         }
3562         spin_unlock_irqrestore(&rxq->lock, flags);
3563         /* If the pre-allocated buffer pool is dropping low, schedule to
3564          * refill it */
3565         if (rxq->free_count <= RX_LOW_WATERMARK)
3566                 queue_work(priv->workqueue, &priv->rx_replenish);
3567
3568
3569         /* If we've added more space for the firmware to place data, tell it.
3570          * Increment device's write pointer in multiples of 8. */
3571         if ((write != (rxq->write & ~0x7))
3572             || (abs(rxq->write - rxq->read) > 7)) {
3573                 spin_lock_irqsave(&rxq->lock, flags);
3574                 rxq->need_update = 1;
3575                 spin_unlock_irqrestore(&rxq->lock, flags);
3576                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3577                 if (rc)
3578                         return rc;
3579         }
3580
3581         return 0;
3582 }
3583
3584 /**
3585  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3586  *
3587  * When moving to rx_free an SKB is allocated for the slot.
3588  *
3589  * Also restock the Rx queue via iwl3945_rx_queue_restock.
3590  * This is called as a scheduled work item (except for during initialization)
3591  */
3592 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
3593 {
3594         struct iwl3945_rx_queue *rxq = &priv->rxq;
3595         struct list_head *element;
3596         struct iwl3945_rx_mem_buffer *rxb;
3597         unsigned long flags;
3598         spin_lock_irqsave(&rxq->lock, flags);
3599         while (!list_empty(&rxq->rx_used)) {
3600                 element = rxq->rx_used.next;
3601                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3602
3603                 /* Alloc a new receive buffer */
3604                 rxb->skb =
3605                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3606                 if (!rxb->skb) {
3607                         if (net_ratelimit())
3608                                 printk(KERN_CRIT DRV_NAME
3609                                        ": Can not allocate SKB buffers\n");
3610                         /* We don't reschedule replenish work here -- we will
3611                          * call the restock method and if it still needs
3612                          * more buffers it will schedule replenish */
3613                         break;
3614                 }
3615
3616                 /* If radiotap head is required, reserve some headroom here.
3617                  * The physical head count is a variable rx_stats->phy_count.
3618                  * We reserve 4 bytes here. Plus these extra bytes, the
3619                  * headroom of the physical head should be enough for the
3620                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3621                  */
3622                 skb_reserve(rxb->skb, 4);
3623
3624                 priv->alloc_rxb_skb++;
3625                 list_del(element);
3626
3627                 /* Get physical address of RB/SKB */
3628                 rxb->dma_addr =
3629                     pci_map_single(priv->pci_dev, rxb->skb->data,
3630                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3631                 list_add_tail(&rxb->list, &rxq->rx_free);
3632                 rxq->free_count++;
3633         }
3634         spin_unlock_irqrestore(&rxq->lock, flags);
3635 }
3636
3637 /*
3638  * this should be called while priv->lock is locked
3639  */
3640 static void __iwl3945_rx_replenish(void *data)
3641 {
3642         struct iwl3945_priv *priv = data;
3643
3644         iwl3945_rx_allocate(priv);
3645         iwl3945_rx_queue_restock(priv);
3646 }
3647
3648
3649 void iwl3945_rx_replenish(void *data)
3650 {
3651         struct iwl3945_priv *priv = data;
3652         unsigned long flags;
3653
3654         iwl3945_rx_allocate(priv);
3655
3656         spin_lock_irqsave(&priv->lock, flags);
3657         iwl3945_rx_queue_restock(priv);
3658         spin_unlock_irqrestore(&priv->lock, flags);
3659 }
3660
3661 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3662  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3663  * This free routine walks the list of POOL entries and if SKB is set to
3664  * non NULL it is unmapped and freed
3665  */
3666 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3667 {
3668         int i;
3669         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3670                 if (rxq->pool[i].skb != NULL) {
3671                         pci_unmap_single(priv->pci_dev,
3672                                          rxq->pool[i].dma_addr,
3673                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3674                         dev_kfree_skb(rxq->pool[i].skb);
3675                 }
3676         }
3677
3678         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3679                             rxq->dma_addr);
3680         rxq->bd = NULL;
3681 }
3682
3683 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
3684 {
3685         struct iwl3945_rx_queue *rxq = &priv->rxq;
3686         struct pci_dev *dev = priv->pci_dev;
3687         int i;
3688
3689         spin_lock_init(&rxq->lock);
3690         INIT_LIST_HEAD(&rxq->rx_free);
3691         INIT_LIST_HEAD(&rxq->rx_used);
3692
3693         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3694         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3695         if (!rxq->bd)
3696                 return -ENOMEM;
3697
3698         /* Fill the rx_used queue with _all_ of the Rx buffers */
3699         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3700                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3701
3702         /* Set us so that we have processed and used all buffers, but have
3703          * not restocked the Rx queue with fresh buffers */
3704         rxq->read = rxq->write = 0;
3705         rxq->free_count = 0;
3706         rxq->need_update = 0;
3707         return 0;
3708 }
3709
3710 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3711 {
3712         unsigned long flags;
3713         int i;
3714         spin_lock_irqsave(&rxq->lock, flags);
3715         INIT_LIST_HEAD(&rxq->rx_free);
3716         INIT_LIST_HEAD(&rxq->rx_used);
3717         /* Fill the rx_used queue with _all_ of the Rx buffers */
3718         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3719                 /* In the reset function, these buffers may have been allocated
3720                  * to an SKB, so we need to unmap and free potential storage */
3721                 if (rxq->pool[i].skb != NULL) {
3722                         pci_unmap_single(priv->pci_dev,
3723                                          rxq->pool[i].dma_addr,
3724                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3725                         priv->alloc_rxb_skb--;
3726                         dev_kfree_skb(rxq->pool[i].skb);
3727                         rxq->pool[i].skb = NULL;
3728                 }
3729                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3730         }
3731
3732         /* Set us so that we have processed and used all buffers, but have
3733          * not restocked the Rx queue with fresh buffers */
3734         rxq->read = rxq->write = 0;
3735         rxq->free_count = 0;
3736         spin_unlock_irqrestore(&rxq->lock, flags);
3737 }
3738
3739 /* Convert linear signal-to-noise ratio into dB */
3740 static u8 ratio2dB[100] = {
3741 /*       0   1   2   3   4   5   6   7   8   9 */
3742          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3743         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3744         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3745         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3746         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3747         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3748         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3749         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3750         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3751         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3752 };
3753
3754 /* Calculates a relative dB value from a ratio of linear
3755  *   (i.e. not dB) signal levels.
3756  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3757 int iwl3945_calc_db_from_ratio(int sig_ratio)
3758 {
3759         /* 1000:1 or higher just report as 60 dB */
3760         if (sig_ratio >= 1000)
3761                 return 60;
3762
3763         /* 100:1 or higher, divide by 10 and use table,
3764          *   add 20 dB to make up for divide by 10 */
3765         if (sig_ratio >= 100)
3766                 return 20 + (int)ratio2dB[sig_ratio/10];
3767
3768         /* We shouldn't see this */
3769         if (sig_ratio < 1)
3770                 return 0;
3771
3772         /* Use table for ratios 1:1 - 99:1 */
3773         return (int)ratio2dB[sig_ratio];
3774 }
3775
3776 #define PERFECT_RSSI (-20) /* dBm */
3777 #define WORST_RSSI (-95)   /* dBm */
3778 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3779
3780 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3781  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3782  *   about formulas used below. */
3783 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3784 {
3785         int sig_qual;
3786         int degradation = PERFECT_RSSI - rssi_dbm;
3787
3788         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3789          * as indicator; formula is (signal dbm - noise dbm).
3790          * SNR at or above 40 is a great signal (100%).
3791          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3792          * Weakest usable signal is usually 10 - 15 dB SNR. */
3793         if (noise_dbm) {
3794                 if (rssi_dbm - noise_dbm >= 40)
3795                         return 100;
3796                 else if (rssi_dbm < noise_dbm)
3797                         return 0;
3798                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3799
3800         /* Else use just the signal level.
3801          * This formula is a least squares fit of data points collected and
3802          *   compared with a reference system that had a percentage (%) display
3803          *   for signal quality. */
3804         } else
3805                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3806                             (15 * RSSI_RANGE + 62 * degradation)) /
3807                            (RSSI_RANGE * RSSI_RANGE);
3808
3809         if (sig_qual > 100)
3810                 sig_qual = 100;
3811         else if (sig_qual < 1)
3812                 sig_qual = 0;
3813
3814         return sig_qual;
3815 }
3816
3817 /**
3818  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3819  *
3820  * Uses the priv->rx_handlers callback function array to invoke
3821  * the appropriate handlers, including command responses,
3822  * frame-received notifications, and other notifications.
3823  */
3824 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
3825 {
3826         struct iwl3945_rx_mem_buffer *rxb;
3827         struct iwl3945_rx_packet *pkt;
3828         struct iwl3945_rx_queue *rxq = &priv->rxq;
3829         u32 r, i;
3830         int reclaim;
3831         unsigned long flags;
3832         u8 fill_rx = 0;
3833         u32 count = 8;
3834
3835         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3836          * buffer that the driver may process (last buffer filled by ucode). */
3837         r = iwl3945_hw_get_rx_read(priv);
3838         i = rxq->read;
3839
3840         if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3841                 fill_rx = 1;
3842         /* Rx interrupt, but nothing sent from uCode */
3843         if (i == r)
3844                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3845
3846         while (i != r) {
3847                 rxb = rxq->queue[i];
3848
3849                 /* If an RXB doesn't have a Rx queue slot associated with it,
3850                  * then a bug has been introduced in the queue refilling
3851                  * routines -- catch it here */
3852                 BUG_ON(rxb == NULL);
3853
3854                 rxq->queue[i] = NULL;
3855
3856                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3857                                             IWL_RX_BUF_SIZE,
3858                                             PCI_DMA_FROMDEVICE);
3859                 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3860
3861                 /* Reclaim a command buffer only if this packet is a response
3862                  *   to a (driver-originated) command.
3863                  * If the packet (e.g. Rx frame) originated from uCode,
3864                  *   there is no command buffer to reclaim.
3865                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3866                  *   but apparently a few don't get set; catch them here. */
3867                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3868                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3869                         (pkt->hdr.cmd != REPLY_TX);
3870
3871                 /* Based on type of command response or notification,
3872                  *   handle those that need handling via function in
3873                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
3874                 if (priv->rx_handlers[pkt->hdr.cmd]) {
3875                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3876                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3877                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3878                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3879                 } else {
3880                         /* No handling needed */
3881                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3882                                 "r %d i %d No handler needed for %s, 0x%02x\n",
3883                                 r, i, get_cmd_string(pkt->hdr.cmd),
3884                                 pkt->hdr.cmd);
3885                 }
3886
3887                 if (reclaim) {
3888                         /* Invoke any callbacks, transfer the skb to caller, and
3889                          * fire off the (possibly) blocking iwl3945_send_cmd()
3890                          * as we reclaim the driver command queue */
3891                         if (rxb && rxb->skb)
3892                                 iwl3945_tx_cmd_complete(priv, rxb);
3893                         else
3894                                 IWL_WARNING("Claim null rxb?\n");
3895                 }
3896
3897                 /* For now we just don't re-use anything.  We can tweak this
3898                  * later to try and re-use notification packets and SKBs that
3899                  * fail to Rx correctly */
3900                 if (rxb->skb != NULL) {
3901                         priv->alloc_rxb_skb--;
3902                         dev_kfree_skb_any(rxb->skb);
3903                         rxb->skb = NULL;
3904                 }
3905
3906                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3907                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3908                 spin_lock_irqsave(&rxq->lock, flags);
3909                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3910                 spin_unlock_irqrestore(&rxq->lock, flags);
3911                 i = (i + 1) & RX_QUEUE_MASK;
3912                 /* If there are a lot of unused frames,
3913                  * restock the Rx queue so ucode won't assert. */
3914                 if (fill_rx) {
3915                         count++;
3916                         if (count >= 8) {
3917                                 priv->rxq.read = i;
3918                                 __iwl3945_rx_replenish(priv);
3919                                 count = 0;
3920                         }
3921                 }
3922         }
3923
3924         /* Backtrack one entry */
3925         priv->rxq.read = i;
3926         iwl3945_rx_queue_restock(priv);
3927 }
3928
3929 /**
3930  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
3931  */
3932 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
3933                                   struct iwl3945_tx_queue *txq)
3934 {
3935         u32 reg = 0;
3936         int rc = 0;
3937         int txq_id = txq->q.id;
3938
3939         if (txq->need_update == 0)
3940                 return rc;
3941
3942         /* if we're trying to save power */
3943         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3944                 /* wake up nic if it's powered down ...
3945                  * uCode will wake up, and interrupt us again, so next
3946                  * time we'll skip this part. */
3947                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3948
3949                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3950                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3951                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
3952                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3953                         return rc;
3954                 }
3955
3956                 /* restore this queue's parameters in nic hardware. */
3957                 rc = iwl3945_grab_nic_access(priv);
3958                 if (rc)
3959                         return rc;
3960                 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
3961                                      txq->q.write_ptr | (txq_id << 8));
3962                 iwl3945_release_nic_access(priv);
3963
3964         /* else not in power-save mode, uCode will never sleep when we're
3965          * trying to tx (during RFKILL, we're not trying to tx). */
3966         } else
3967                 iwl3945_write32(priv, HBUS_TARG_WRPTR,
3968                             txq->q.write_ptr | (txq_id << 8));
3969
3970         txq->need_update = 0;
3971
3972         return rc;
3973 }
3974
3975 #ifdef CONFIG_IWL3945_DEBUG
3976 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
3977 {
3978         IWL_DEBUG_RADIO("RX CONFIG:\n");
3979         iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3980         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3981         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3982         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3983                         le32_to_cpu(rxon->filter_flags));
3984         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3985         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3986                         rxon->ofdm_basic_rates);
3987         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3988         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3989         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
3990         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3991 }
3992 #endif
3993
3994 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
3995 {
3996         IWL_DEBUG_ISR("Enabling interrupts\n");
3997         set_bit(STATUS_INT_ENABLED, &priv->status);
3998         iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3999 }
4000
4001
4002 /* call this function to flush any scheduled tasklet */
4003 static inline void iwl_synchronize_irq(struct iwl3945_priv *priv)
4004 {
4005         /* wait to make sure we flush pedding tasklet*/
4006         synchronize_irq(priv->pci_dev->irq);
4007         tasklet_kill(&priv->irq_tasklet);
4008 }
4009
4010
4011 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
4012 {
4013         clear_bit(STATUS_INT_ENABLED, &priv->status);
4014
4015         /* disable interrupts from uCode/NIC to host */
4016         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4017
4018         /* acknowledge/clear/reset any interrupts still pending
4019          * from uCode or flow handler (Rx/Tx DMA) */
4020         iwl3945_write32(priv, CSR_INT, 0xffffffff);
4021         iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4022         IWL_DEBUG_ISR("Disabled interrupts\n");
4023 }
4024
4025 static const char *desc_lookup(int i)
4026 {
4027         switch (i) {
4028         case 1:
4029                 return "FAIL";
4030         case 2:
4031                 return "BAD_PARAM";
4032         case 3:
4033                 return "BAD_CHECKSUM";
4034         case 4:
4035                 return "NMI_INTERRUPT";
4036         case 5:
4037                 return "SYSASSERT";
4038         case 6:
4039                 return "FATAL_ERROR";
4040         }
4041
4042         return "UNKNOWN";
4043 }
4044
4045 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4046 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4047
4048 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4049 {
4050         u32 i;
4051         u32 desc, time, count, base, data1;
4052         u32 blink1, blink2, ilink1, ilink2;
4053         int rc;
4054
4055         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4056
4057         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4058                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4059                 return;
4060         }
4061
4062         rc = iwl3945_grab_nic_access(priv);
4063         if (rc) {
4064                 IWL_WARNING("Can not read from adapter at this time.\n");
4065                 return;
4066         }
4067
4068         count = iwl3945_read_targ_mem(priv, base);
4069
4070         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4071                 IWL_ERROR("Start IWL Error Log Dump:\n");
4072                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4073         }
4074
4075         IWL_ERROR("Desc       Time       asrtPC  blink2 "
4076                   "ilink1  nmiPC   Line\n");
4077         for (i = ERROR_START_OFFSET;
4078              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4079              i += ERROR_ELEM_SIZE) {
4080                 desc = iwl3945_read_targ_mem(priv, base + i);
4081                 time =
4082                     iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4083                 blink1 =
4084                     iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4085                 blink2 =
4086                     iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4087                 ilink1 =
4088                     iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4089                 ilink2 =
4090                     iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4091                 data1 =
4092                     iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4093
4094                 IWL_ERROR
4095                     ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4096                      desc_lookup(desc), desc, time, blink1, blink2,
4097                      ilink1, ilink2, data1);
4098         }
4099
4100         iwl3945_release_nic_access(priv);
4101
4102 }
4103
4104 #define EVENT_START_OFFSET  (6 * sizeof(u32))
4105
4106 /**
4107  * iwl3945_print_event_log - Dump error event log to syslog
4108  *
4109  * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4110  */
4111 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4112                                 u32 num_events, u32 mode)
4113 {
4114         u32 i;
4115         u32 base;       /* SRAM byte address of event log header */
4116         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4117         u32 ptr;        /* SRAM byte address of log data */
4118         u32 ev, time, data; /* event log data */
4119
4120         if (num_events == 0)
4121                 return;
4122
4123         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4124
4125         if (mode == 0)
4126                 event_size = 2 * sizeof(u32);
4127         else
4128                 event_size = 3 * sizeof(u32);
4129
4130         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4131
4132         /* "time" is actually "data" for mode 0 (no timestamp).
4133          * place event id # at far right for easier visual parsing. */
4134         for (i = 0; i < num_events; i++) {
4135                 ev = iwl3945_read_targ_mem(priv, ptr);
4136                 ptr += sizeof(u32);
4137                 time = iwl3945_read_targ_mem(priv, ptr);
4138                 ptr += sizeof(u32);
4139                 if (mode == 0)
4140                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4141                 else {
4142                         data = iwl3945_read_targ_mem(priv, ptr);
4143                         ptr += sizeof(u32);
4144                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4145                 }
4146         }
4147 }
4148
4149 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4150 {
4151         int rc;
4152         u32 base;       /* SRAM byte address of event log header */
4153         u32 capacity;   /* event log capacity in # entries */
4154         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4155         u32 num_wraps;  /* # times uCode wrapped to top of log */
4156         u32 next_entry; /* index of next entry to be written by uCode */
4157         u32 size;       /* # entries that we'll print */
4158
4159         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4160         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4161                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4162                 return;
4163         }
4164
4165         rc = iwl3945_grab_nic_access(priv);
4166         if (rc) {
4167                 IWL_WARNING("Can not read from adapter at this time.\n");
4168                 return;
4169         }
4170
4171         /* event log header */
4172         capacity = iwl3945_read_targ_mem(priv, base);
4173         mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4174         num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4175         next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4176
4177         size = num_wraps ? capacity : next_entry;
4178
4179         /* bail out if nothing in log */
4180         if (size == 0) {
4181                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4182                 iwl3945_release_nic_access(priv);
4183                 return;
4184         }
4185
4186         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4187                   size, num_wraps);
4188
4189         /* if uCode has wrapped back to top of log, start at the oldest entry,
4190          * i.e the next one that uCode would fill. */
4191         if (num_wraps)
4192                 iwl3945_print_event_log(priv, next_entry,
4193                                     capacity - next_entry, mode);
4194
4195         /* (then/else) start at top of log */
4196         iwl3945_print_event_log(priv, 0, next_entry, mode);
4197
4198         iwl3945_release_nic_access(priv);
4199 }
4200
4201 /**
4202  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4203  */
4204 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4205 {
4206         /* Set the FW error flag -- cleared on iwl3945_down */
4207         set_bit(STATUS_FW_ERROR, &priv->status);
4208
4209         /* Cancel currently queued command. */
4210         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4211
4212 #ifdef CONFIG_IWL3945_DEBUG
4213         if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4214                 iwl3945_dump_nic_error_log(priv);
4215                 iwl3945_dump_nic_event_log(priv);
4216                 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
4217         }
4218 #endif
4219
4220         wake_up_interruptible(&priv->wait_command_queue);
4221
4222         /* Keep the restart process from trying to send host
4223          * commands by clearing the INIT status bit */
4224         clear_bit(STATUS_READY, &priv->status);
4225
4226         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4227                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4228                           "Restarting adapter due to uCode error.\n");
4229
4230                 if (iwl3945_is_associated(priv)) {
4231                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4232                                sizeof(priv->recovery_rxon));
4233                         priv->error_recovering = 1;
4234                 }
4235                 queue_work(priv->workqueue, &priv->restart);
4236         }
4237 }
4238
4239 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4240 {
4241         unsigned long flags;
4242
4243         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4244                sizeof(priv->staging_rxon));
4245         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4246         iwl3945_commit_rxon(priv);
4247
4248         iwl3945_add_station(priv, priv->bssid, 1, 0);
4249
4250         spin_lock_irqsave(&priv->lock, flags);
4251         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4252         priv->error_recovering = 0;
4253         spin_unlock_irqrestore(&priv->lock, flags);
4254 }
4255
4256 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4257 {
4258         u32 inta, handled = 0;
4259         u32 inta_fh;
4260         unsigned long flags;
4261 #ifdef CONFIG_IWL3945_DEBUG
4262         u32 inta_mask;
4263 #endif
4264
4265         spin_lock_irqsave(&priv->lock, flags);
4266
4267         /* Ack/clear/reset pending uCode interrupts.
4268          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4269          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4270         inta = iwl3945_read32(priv, CSR_INT);
4271         iwl3945_write32(priv, CSR_INT, inta);
4272
4273         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4274          * Any new interrupts that happen after this, either while we're
4275          * in this tasklet, or later, will show up in next ISR/tasklet. */
4276         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4277         iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4278
4279 #ifdef CONFIG_IWL3945_DEBUG
4280         if (iwl3945_debug_level & IWL_DL_ISR) {
4281                 /* just for debug */
4282                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4283                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4284                               inta, inta_mask, inta_fh);
4285         }
4286 #endif
4287
4288         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4289          * atomic, make sure that inta covers all the interrupts that
4290          * we've discovered, even if FH interrupt came in just after
4291          * reading CSR_INT. */
4292         if (inta_fh & CSR39_FH_INT_RX_MASK)
4293                 inta |= CSR_INT_BIT_FH_RX;
4294         if (inta_fh & CSR39_FH_INT_TX_MASK)
4295                 inta |= CSR_INT_BIT_FH_TX;
4296
4297         /* Now service all interrupt bits discovered above. */
4298         if (inta & CSR_INT_BIT_HW_ERR) {
4299                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4300
4301                 /* Tell the device to stop sending interrupts */
4302                 iwl3945_disable_interrupts(priv);
4303
4304                 iwl3945_irq_handle_error(priv);
4305
4306                 handled |= CSR_INT_BIT_HW_ERR;
4307
4308                 spin_unlock_irqrestore(&priv->lock, flags);
4309
4310                 return;
4311         }
4312
4313 #ifdef CONFIG_IWL3945_DEBUG
4314         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4315                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4316                 if (inta & CSR_INT_BIT_SCD)
4317                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4318                                       "the frame/frames.\n");
4319
4320                 /* Alive notification via Rx interrupt will do the real work */
4321                 if (inta & CSR_INT_BIT_ALIVE)
4322                         IWL_DEBUG_ISR("Alive interrupt\n");
4323         }
4324 #endif
4325         /* Safely ignore these bits for debug checks below */
4326         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4327
4328         /* HW RF KILL switch toggled (4965 only) */
4329         if (inta & CSR_INT_BIT_RF_KILL) {
4330                 int hw_rf_kill = 0;
4331                 if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
4332                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4333                         hw_rf_kill = 1;
4334
4335                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4336                                 "RF_KILL bit toggled to %s.\n",
4337                                 hw_rf_kill ? "disable radio":"enable radio");
4338
4339                 /* Queue restart only if RF_KILL switch was set to "kill"
4340                  *   when we loaded driver, and is now set to "enable".
4341                  * After we're Alive, RF_KILL gets handled by
4342                  *   iwl3945_rx_card_state_notif() */
4343                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4344                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4345                         queue_work(priv->workqueue, &priv->restart);
4346                 }
4347
4348                 handled |= CSR_INT_BIT_RF_KILL;
4349         }
4350
4351         /* Chip got too hot and stopped itself (4965 only) */
4352         if (inta & CSR_INT_BIT_CT_KILL) {
4353                 IWL_ERROR("Microcode CT kill error detected.\n");
4354                 handled |= CSR_INT_BIT_CT_KILL;
4355         }
4356
4357         /* Error detected by uCode */
4358         if (inta & CSR_INT_BIT_SW_ERR) {
4359                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4360                           inta);
4361                 iwl3945_irq_handle_error(priv);
4362                 handled |= CSR_INT_BIT_SW_ERR;
4363         }
4364
4365         /* uCode wakes up after power-down sleep */
4366         if (inta & CSR_INT_BIT_WAKEUP) {
4367                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4368                 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4369                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4370                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4371                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4372                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4373                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4374                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4375
4376                 handled |= CSR_INT_BIT_WAKEUP;
4377         }
4378
4379         /* All uCode command responses, including Tx command responses,
4380          * Rx "responses" (frame-received notification), and other
4381          * notifications from uCode come through here*/
4382         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4383                 iwl3945_rx_handle(priv);
4384                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4385         }
4386
4387         if (inta & CSR_INT_BIT_FH_TX) {
4388                 IWL_DEBUG_ISR("Tx interrupt\n");
4389
4390                 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4391                 if (!iwl3945_grab_nic_access(priv)) {
4392                         iwl3945_write_direct32(priv,
4393                                              FH_TCSR_CREDIT
4394                                              (ALM_FH_SRVC_CHNL), 0x0);
4395                         iwl3945_release_nic_access(priv);
4396                 }
4397                 handled |= CSR_INT_BIT_FH_TX;
4398         }
4399
4400         if (inta & ~handled)
4401                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4402
4403         if (inta & ~CSR_INI_SET_MASK) {
4404                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4405                          inta & ~CSR_INI_SET_MASK);
4406                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4407         }
4408
4409         /* Re-enable all interrupts */
4410         /* only Re-enable if disabled by irq */
4411         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4412                 iwl3945_enable_interrupts(priv);
4413
4414 #ifdef CONFIG_IWL3945_DEBUG
4415         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4416                 inta = iwl3945_read32(priv, CSR_INT);
4417                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4418                 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4419                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4420                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4421         }
4422 #endif
4423         spin_unlock_irqrestore(&priv->lock, flags);
4424 }
4425
4426 static irqreturn_t iwl3945_isr(int irq, void *data)
4427 {
4428         struct iwl3945_priv *priv = data;
4429         u32 inta, inta_mask;
4430         u32 inta_fh;
4431         if (!priv)
4432                 return IRQ_NONE;
4433
4434         spin_lock(&priv->lock);
4435
4436         /* Disable (but don't clear!) interrupts here to avoid
4437          *    back-to-back ISRs and sporadic interrupts from our NIC.
4438          * If we have something to service, the tasklet will re-enable ints.
4439          * If we *don't* have something, we'll re-enable before leaving here. */
4440         inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
4441         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4442
4443         /* Discover which interrupts are active/pending */
4444         inta = iwl3945_read32(priv, CSR_INT);
4445         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4446
4447         /* Ignore interrupt if there's nothing in NIC to service.
4448          * This may be due to IRQ shared with another device,
4449          * or due to sporadic interrupts thrown from our NIC. */
4450         if (!inta && !inta_fh) {
4451                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4452                 goto none;
4453         }
4454
4455         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4456                 /* Hardware disappeared */
4457                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4458                 goto unplugged;
4459         }
4460
4461         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4462                       inta, inta_mask, inta_fh);
4463
4464         inta &= ~CSR_INT_BIT_SCD;
4465
4466         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4467         if (likely(inta || inta_fh))
4468                 tasklet_schedule(&priv->irq_tasklet);
4469 unplugged:
4470         spin_unlock(&priv->lock);
4471
4472         return IRQ_HANDLED;
4473
4474  none:
4475         /* re-enable interrupts here since we don't have anything to service. */
4476         /* only Re-enable if disabled by irq */
4477         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4478                 iwl3945_enable_interrupts(priv);
4479         spin_unlock(&priv->lock);
4480         return IRQ_NONE;
4481 }
4482
4483 /************************** EEPROM BANDS ****************************
4484  *
4485  * The iwl3945_eeprom_band definitions below provide the mapping from the
4486  * EEPROM contents to the specific channel number supported for each
4487  * band.
4488  *
4489  * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
4490  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4491  * The specific geography and calibration information for that channel
4492  * is contained in the eeprom map itself.
4493  *
4494  * During init, we copy the eeprom information and channel map
4495  * information into priv->channel_info_24/52 and priv->channel_map_24/52
4496  *
4497  * channel_map_24/52 provides the index in the channel_info array for a
4498  * given channel.  We have to have two separate maps as there is channel
4499  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4500  * band_2
4501  *
4502  * A value of 0xff stored in the channel_map indicates that the channel
4503  * is not supported by the hardware at all.
4504  *
4505  * A value of 0xfe in the channel_map indicates that the channel is not
4506  * valid for Tx with the current hardware.  This means that
4507  * while the system can tune and receive on a given channel, it may not
4508  * be able to associate or transmit any frames on that
4509  * channel.  There is no corresponding channel information for that
4510  * entry.
4511  *
4512  *********************************************************************/
4513
4514 /* 2.4 GHz */
4515 static const u8 iwl3945_eeprom_band_1[14] = {
4516         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4517 };
4518
4519 /* 5.2 GHz bands */
4520 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
4521         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4522 };
4523
4524 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
4525         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4526 };
4527
4528 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
4529         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4530 };
4531
4532 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
4533         145, 149, 153, 157, 161, 165
4534 };
4535
4536 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
4537                                     int *eeprom_ch_count,
4538                                     const struct iwl3945_eeprom_channel
4539                                     **eeprom_ch_info,
4540                                     const u8 **eeprom_ch_index)
4541 {
4542         switch (band) {
4543         case 1:         /* 2.4GHz band */
4544                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4545                 *eeprom_ch_info = priv->eeprom.band_1_channels;
4546                 *eeprom_ch_index = iwl3945_eeprom_band_1;
4547                 break;
4548         case 2:         /* 4.9GHz band */
4549                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4550                 *eeprom_ch_info = priv->eeprom.band_2_channels;
4551                 *eeprom_ch_index = iwl3945_eeprom_band_2;
4552                 break;
4553         case 3:         /* 5.2GHz band */
4554                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4555                 *eeprom_ch_info = priv->eeprom.band_3_channels;
4556                 *eeprom_ch_index = iwl3945_eeprom_band_3;
4557                 break;
4558         case 4:         /* 5.5GHz band */
4559                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4560                 *eeprom_ch_info = priv->eeprom.band_4_channels;
4561                 *eeprom_ch_index = iwl3945_eeprom_band_4;
4562                 break;
4563         case 5:         /* 5.7GHz band */
4564                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4565                 *eeprom_ch_info = priv->eeprom.band_5_channels;
4566                 *eeprom_ch_index = iwl3945_eeprom_band_5;
4567                 break;
4568         default:
4569                 BUG();
4570                 return;
4571         }
4572 }
4573
4574 /**
4575  * iwl3945_get_channel_info - Find driver's private channel info
4576  *
4577  * Based on band and channel number.
4578  */
4579 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4580                                                     enum ieee80211_band band, u16 channel)
4581 {
4582         int i;
4583
4584         switch (band) {
4585         case IEEE80211_BAND_5GHZ:
4586                 for (i = 14; i < priv->channel_count; i++) {
4587                         if (priv->channel_info[i].channel == channel)
4588                                 return &priv->channel_info[i];
4589                 }
4590                 break;
4591
4592         case IEEE80211_BAND_2GHZ:
4593                 if (channel >= 1 && channel <= 14)
4594                         return &priv->channel_info[channel - 1];
4595                 break;
4596         case IEEE80211_NUM_BANDS:
4597                 WARN_ON(1);
4598         }
4599
4600         return NULL;
4601 }
4602
4603 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4604                             ? # x " " : "")
4605
4606 /**
4607  * iwl3945_init_channel_map - Set up driver's info for all possible channels
4608  */
4609 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
4610 {
4611         int eeprom_ch_count = 0;
4612         const u8 *eeprom_ch_index = NULL;
4613         const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
4614         int band, ch;
4615         struct iwl3945_channel_info *ch_info;
4616
4617         if (priv->channel_count) {
4618                 IWL_DEBUG_INFO("Channel map already initialized.\n");
4619                 return 0;
4620         }
4621
4622         if (priv->eeprom.version < 0x2f) {
4623                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
4624                             priv->eeprom.version);
4625                 return -EINVAL;
4626         }
4627
4628         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4629
4630         priv->channel_count =
4631             ARRAY_SIZE(iwl3945_eeprom_band_1) +
4632             ARRAY_SIZE(iwl3945_eeprom_band_2) +
4633             ARRAY_SIZE(iwl3945_eeprom_band_3) +
4634             ARRAY_SIZE(iwl3945_eeprom_band_4) +
4635             ARRAY_SIZE(iwl3945_eeprom_band_5);
4636
4637         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4638
4639         priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
4640                                      priv->channel_count, GFP_KERNEL);
4641         if (!priv->channel_info) {
4642                 IWL_ERROR("Could not allocate channel_info\n");
4643                 priv->channel_count = 0;
4644                 return -ENOMEM;
4645         }
4646
4647         ch_info = priv->channel_info;
4648
4649         /* Loop through the 5 EEPROM bands adding them in order to the
4650          * channel map we maintain (that contains additional information than
4651          * what just in the EEPROM) */
4652         for (band = 1; band <= 5; band++) {
4653
4654                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4655                                         &eeprom_ch_info, &eeprom_ch_index);
4656
4657                 /* Loop through each band adding each of the channels */
4658                 for (ch = 0; ch < eeprom_ch_count; ch++) {
4659                         ch_info->channel = eeprom_ch_index[ch];
4660                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4661                             IEEE80211_BAND_5GHZ;
4662
4663                         /* permanently store EEPROM's channel regulatory flags
4664                          *   and max power in channel info database. */
4665                         ch_info->eeprom = eeprom_ch_info[ch];
4666
4667                         /* Copy the run-time flags so they are there even on
4668                          * invalid channels */
4669                         ch_info->flags = eeprom_ch_info[ch].flags;
4670
4671                         if (!(is_channel_valid(ch_info))) {
4672                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4673                                                "No traffic\n",
4674                                                ch_info->channel,
4675                                                ch_info->flags,
4676                                                is_channel_a_band(ch_info) ?
4677                                                "5.2" : "2.4");
4678                                 ch_info++;
4679                                 continue;
4680                         }
4681
4682                         /* Initialize regulatory-based run-time data */
4683                         ch_info->max_power_avg = ch_info->curr_txpow =
4684                             eeprom_ch_info[ch].max_power_avg;
4685                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4686                         ch_info->min_power = 0;
4687
4688                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
4689                                        " %ddBm): Ad-Hoc %ssupported\n",
4690                                        ch_info->channel,
4691                                        is_channel_a_band(ch_info) ?
4692                                        "5.2" : "2.4",
4693                                        CHECK_AND_PRINT(VALID),
4694                                        CHECK_AND_PRINT(IBSS),
4695                                        CHECK_AND_PRINT(ACTIVE),
4696                                        CHECK_AND_PRINT(RADAR),
4697                                        CHECK_AND_PRINT(WIDE),
4698                                        CHECK_AND_PRINT(DFS),
4699                                        eeprom_ch_info[ch].flags,
4700                                        eeprom_ch_info[ch].max_power_avg,
4701                                        ((eeprom_ch_info[ch].
4702                                          flags & EEPROM_CHANNEL_IBSS)
4703                                         && !(eeprom_ch_info[ch].
4704                                              flags & EEPROM_CHANNEL_RADAR))
4705                                        ? "" : "not ");
4706
4707                         /* Set the user_txpower_limit to the highest power
4708                          * supported by any channel */
4709                         if (eeprom_ch_info[ch].max_power_avg >
4710                             priv->user_txpower_limit)
4711                                 priv->user_txpower_limit =
4712                                     eeprom_ch_info[ch].max_power_avg;
4713
4714                         ch_info++;
4715                 }
4716         }
4717
4718         /* Set up txpower settings in driver for all channels */
4719         if (iwl3945_txpower_set_from_eeprom(priv))
4720                 return -EIO;
4721
4722         return 0;
4723 }
4724
4725 /*
4726  * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4727  */
4728 static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
4729 {
4730         kfree(priv->channel_info);
4731         priv->channel_count = 0;
4732 }
4733
4734 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4735  * sending probe req.  This should be set long enough to hear probe responses
4736  * from more than one AP.  */
4737 #define IWL_ACTIVE_DWELL_TIME_24    (30)        /* all times in msec */
4738 #define IWL_ACTIVE_DWELL_TIME_52    (20)
4739
4740 #define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
4741 #define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
4742
4743 /* For faster active scanning, scan will move to the next channel if fewer than
4744  * PLCP_QUIET_THRESH packets are heard on this channel within
4745  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4746  * time if it's a quiet channel (nothing responded to our probe, and there's
4747  * no other traffic).
4748  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4749 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4750 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(10)  /* msec */
4751
4752 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4753  * Must be set longer than active dwell time.
4754  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4755 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4756 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4757 #define IWL_PASSIVE_DWELL_BASE      (100)
4758 #define IWL_CHANNEL_TUNE_TIME       5
4759
4760 #define IWL_SCAN_PROBE_MASK(n)   cpu_to_le32((BIT(n) | (BIT(n) - BIT(1))))
4761
4762 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
4763                                                 enum ieee80211_band band,
4764                                                 u8 n_probes)
4765 {
4766         if (band == IEEE80211_BAND_5GHZ)
4767                 return IWL_ACTIVE_DWELL_TIME_52 +
4768                         IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
4769         else
4770                 return IWL_ACTIVE_DWELL_TIME_24 +
4771                         IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
4772 }
4773
4774 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
4775                                           enum ieee80211_band band)
4776 {
4777         u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4778             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4779             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4780
4781         if (iwl3945_is_associated(priv)) {
4782                 /* If we're associated, we clamp the maximum passive
4783                  * dwell time to be 98% of the beacon interval (minus
4784                  * 2 * channel tune time) */
4785                 passive = priv->beacon_int;
4786                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4787                         passive = IWL_PASSIVE_DWELL_BASE;
4788                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4789         }
4790
4791         return passive;
4792 }
4793
4794 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
4795                                          enum ieee80211_band band,
4796                                      u8 is_active, u8 n_probes,
4797                                      struct iwl3945_scan_channel *scan_ch)
4798 {
4799         const struct ieee80211_channel *channels = NULL;
4800         const struct ieee80211_supported_band *sband;
4801         const struct iwl3945_channel_info *ch_info;
4802         u16 passive_dwell = 0;
4803         u16 active_dwell = 0;
4804         int added, i;
4805
4806         sband = iwl3945_get_band(priv, band);
4807         if (!sband)
4808                 return 0;
4809
4810         channels = sband->channels;
4811
4812         active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4813         passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4814
4815         if (passive_dwell <= active_dwell)
4816                 passive_dwell = active_dwell + 1;
4817
4818         for (i = 0, added = 0; i < sband->n_channels; i++) {
4819                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4820                         continue;
4821
4822                 scan_ch->channel = channels[i].hw_value;
4823
4824                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4825                 if (!is_channel_valid(ch_info)) {
4826                         IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4827                                        scan_ch->channel);
4828                         continue;
4829                 }
4830
4831                 if (!is_active || is_channel_passive(ch_info) ||
4832                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4833                         scan_ch->type = 0;      /* passive */
4834                 else
4835                         scan_ch->type = 1;      /* active */
4836
4837                 if ((scan_ch->type & 1) && n_probes)
4838                         scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4839
4840                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4841                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4842
4843                 /* Set txpower levels to defaults */
4844                 scan_ch->tpc.dsp_atten = 110;
4845                 /* scan_pwr_info->tpc.dsp_atten; */
4846
4847                 /*scan_pwr_info->tpc.tx_gain; */
4848                 if (band == IEEE80211_BAND_5GHZ)
4849                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4850                 else {
4851                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4852                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4853                          * power level:
4854                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4855                          */
4856                 }
4857
4858                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4859                                scan_ch->channel,
4860                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4861                                (scan_ch->type & 1) ?
4862                                active_dwell : passive_dwell);
4863
4864                 scan_ch++;
4865                 added++;
4866         }
4867
4868         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4869         return added;
4870 }
4871
4872 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
4873                               struct ieee80211_rate *rates)
4874 {
4875         int i;
4876
4877         for (i = 0; i < IWL_RATE_COUNT; i++) {
4878                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4879                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4880                 rates[i].hw_value_short = i;
4881                 rates[i].flags = 0;
4882                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4883                         /*
4884                          * If CCK != 1M then set short preamble rate flag.
4885                          */
4886                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4887                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4888                 }
4889         }
4890 }
4891
4892 /**
4893  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
4894  */
4895 static int iwl3945_init_geos(struct iwl3945_priv *priv)
4896 {
4897         struct iwl3945_channel_info *ch;
4898         struct ieee80211_supported_band *sband;
4899         struct ieee80211_channel *channels;
4900         struct ieee80211_channel *geo_ch;
4901         struct ieee80211_rate *rates;
4902         int i = 0;
4903
4904         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4905             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4906                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4907                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4908                 return 0;
4909         }
4910
4911         channels = kzalloc(sizeof(struct ieee80211_channel) *
4912                            priv->channel_count, GFP_KERNEL);
4913         if (!channels)
4914                 return -ENOMEM;
4915
4916         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4917                         GFP_KERNEL);
4918         if (!rates) {
4919                 kfree(channels);
4920                 return -ENOMEM;
4921         }
4922
4923         /* 5.2GHz channels start after the 2.4GHz channels */
4924         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4925         sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4926         /* just OFDM */
4927         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4928         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4929
4930         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4931         sband->channels = channels;
4932         /* OFDM & CCK */
4933         sband->bitrates = rates;
4934         sband->n_bitrates = IWL_RATE_COUNT;
4935
4936         priv->ieee_channels = channels;
4937         priv->ieee_rates = rates;
4938
4939         iwl3945_init_hw_rates(priv, rates);
4940
4941         for (i = 0;  i < priv->channel_count; i++) {
4942                 ch = &priv->channel_info[i];
4943
4944                 /* FIXME: might be removed if scan is OK*/
4945                 if (!is_channel_valid(ch))
4946                         continue;
4947
4948                 if (is_channel_a_band(ch))
4949                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4950                 else
4951                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4952
4953                 geo_ch = &sband->channels[sband->n_channels++];
4954
4955                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4956                 geo_ch->max_power = ch->max_power_avg;
4957                 geo_ch->max_antenna_gain = 0xff;
4958                 geo_ch->hw_value = ch->channel;
4959
4960                 if (is_channel_valid(ch)) {
4961                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4962                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4963
4964                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4965                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4966
4967                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4968                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4969
4970                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4971                                 priv->max_channel_txpower_limit =
4972                                     ch->max_power_avg;
4973                 } else {
4974                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4975                 }
4976
4977                 /* Save flags for reg domain usage */
4978                 geo_ch->orig_flags = geo_ch->flags;
4979
4980                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4981                                 ch->channel, geo_ch->center_freq,
4982                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4983                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4984                                 "restricted" : "valid",
4985                                  geo_ch->flags);
4986         }
4987
4988         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4989              priv->cfg->sku & IWL_SKU_A) {
4990                 printk(KERN_INFO DRV_NAME
4991                        ": Incorrectly detected BG card as ABG.  Please send "
4992                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4993                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
4994                  priv->cfg->sku &= ~IWL_SKU_A;
4995         }
4996
4997         printk(KERN_INFO DRV_NAME
4998                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4999                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5000                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5001
5002         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
5003                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
5004                         &priv->bands[IEEE80211_BAND_2GHZ];
5005         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
5006                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
5007                         &priv->bands[IEEE80211_BAND_5GHZ];
5008
5009         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5010
5011         return 0;
5012 }
5013
5014 /*
5015  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
5016  */
5017 static void iwl3945_free_geos(struct iwl3945_priv *priv)
5018 {
5019         kfree(priv->ieee_channels);
5020         kfree(priv->ieee_rates);
5021         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5022 }
5023
5024 /******************************************************************************
5025  *
5026  * uCode download functions
5027  *
5028  ******************************************************************************/
5029
5030 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
5031 {
5032         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5033         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5034         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5035         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5036         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5037         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5038 }
5039
5040 /**
5041  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5042  *     looking at all data.
5043  */
5044 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 *image, u32 len)
5045 {
5046         u32 val;
5047         u32 save_len = len;
5048         int rc = 0;
5049         u32 errcnt;
5050
5051         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5052
5053         rc = iwl3945_grab_nic_access(priv);
5054         if (rc)
5055                 return rc;
5056
5057         iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5058
5059         errcnt = 0;
5060         for (; len > 0; len -= sizeof(u32), image++) {
5061                 /* read data comes through single port, auto-incr addr */
5062                 /* NOTE: Use the debugless read so we don't flood kernel log
5063                  * if IWL_DL_IO is set */
5064                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5065                 if (val != le32_to_cpu(*image)) {
5066                         IWL_ERROR("uCode INST section is invalid at "
5067                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5068                                   save_len - len, val, le32_to_cpu(*image));
5069                         rc = -EIO;
5070                         errcnt++;
5071                         if (errcnt >= 20)
5072                                 break;
5073                 }
5074         }
5075
5076         iwl3945_release_nic_access(priv);
5077
5078         if (!errcnt)
5079                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5080
5081         return rc;
5082 }
5083
5084
5085 /**
5086  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5087  *   using sample data 100 bytes apart.  If these sample points are good,
5088  *   it's a pretty good bet that everything between them is good, too.
5089  */
5090 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5091 {
5092         u32 val;
5093         int rc = 0;
5094         u32 errcnt = 0;
5095         u32 i;
5096
5097         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5098
5099         rc = iwl3945_grab_nic_access(priv);
5100         if (rc)
5101                 return rc;
5102
5103         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5104                 /* read data comes through single port, auto-incr addr */
5105                 /* NOTE: Use the debugless read so we don't flood kernel log
5106                  * if IWL_DL_IO is set */
5107                 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5108                         i + RTC_INST_LOWER_BOUND);
5109                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5110                 if (val != le32_to_cpu(*image)) {
5111 #if 0 /* Enable this if you want to see details */
5112                         IWL_ERROR("uCode INST section is invalid at "
5113                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5114                                   i, val, *image);
5115 #endif
5116                         rc = -EIO;
5117                         errcnt++;
5118                         if (errcnt >= 3)
5119                                 break;
5120                 }
5121         }
5122
5123         iwl3945_release_nic_access(priv);
5124
5125         return rc;
5126 }
5127
5128
5129 /**
5130  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5131  *    and verify its contents
5132  */
5133 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5134 {
5135         __le32 *image;
5136         u32 len;
5137         int rc = 0;
5138
5139         /* Try bootstrap */
5140         image = (__le32 *)priv->ucode_boot.v_addr;
5141         len = priv->ucode_boot.len;
5142         rc = iwl3945_verify_inst_sparse(priv, image, len);
5143         if (rc == 0) {
5144                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5145                 return 0;
5146         }
5147
5148         /* Try initialize */
5149         image = (__le32 *)priv->ucode_init.v_addr;
5150         len = priv->ucode_init.len;
5151         rc = iwl3945_verify_inst_sparse(priv, image, len);
5152         if (rc == 0) {
5153                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5154                 return 0;
5155         }
5156
5157         /* Try runtime/protocol */
5158         image = (__le32 *)priv->ucode_code.v_addr;
5159         len = priv->ucode_code.len;
5160         rc = iwl3945_verify_inst_sparse(priv, image, len);
5161         if (rc == 0) {
5162                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5163                 return 0;
5164         }
5165
5166         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5167
5168         /* Since nothing seems to match, show first several data entries in
5169          * instruction SRAM, so maybe visual inspection will give a clue.
5170          * Selection of bootstrap image (vs. other images) is arbitrary. */
5171         image = (__le32 *)priv->ucode_boot.v_addr;
5172         len = priv->ucode_boot.len;
5173         rc = iwl3945_verify_inst_full(priv, image, len);
5174
5175         return rc;
5176 }
5177
5178
5179 /* check contents of special bootstrap uCode SRAM */
5180 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5181 {
5182         __le32 *image = priv->ucode_boot.v_addr;
5183         u32 len = priv->ucode_boot.len;
5184         u32 reg;
5185         u32 val;
5186
5187         IWL_DEBUG_INFO("Begin verify bsm\n");
5188
5189         /* verify BSM SRAM contents */
5190         val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5191         for (reg = BSM_SRAM_LOWER_BOUND;
5192              reg < BSM_SRAM_LOWER_BOUND + len;
5193              reg += sizeof(u32), image++) {
5194                 val = iwl3945_read_prph(priv, reg);
5195                 if (val != le32_to_cpu(*image)) {
5196                         IWL_ERROR("BSM uCode verification failed at "
5197                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5198                                   BSM_SRAM_LOWER_BOUND,
5199                                   reg - BSM_SRAM_LOWER_BOUND, len,
5200                                   val, le32_to_cpu(*image));
5201                         return -EIO;
5202                 }
5203         }
5204
5205         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5206
5207         return 0;
5208 }
5209
5210 /**
5211  * iwl3945_load_bsm - Load bootstrap instructions
5212  *
5213  * BSM operation:
5214  *
5215  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5216  * in special SRAM that does not power down during RFKILL.  When powering back
5217  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5218  * the bootstrap program into the on-board processor, and starts it.
5219  *
5220  * The bootstrap program loads (via DMA) instructions and data for a new
5221  * program from host DRAM locations indicated by the host driver in the
5222  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5223  * automatically.
5224  *
5225  * When initializing the NIC, the host driver points the BSM to the
5226  * "initialize" uCode image.  This uCode sets up some internal data, then
5227  * notifies host via "initialize alive" that it is complete.
5228  *
5229  * The host then replaces the BSM_DRAM_* pointer values to point to the
5230  * normal runtime uCode instructions and a backup uCode data cache buffer
5231  * (filled initially with starting data values for the on-board processor),
5232  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5233  * which begins normal operation.
5234  *
5235  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5236  * the backup data cache in DRAM before SRAM is powered down.
5237  *
5238  * When powering back up, the BSM loads the bootstrap program.  This reloads
5239  * the runtime uCode instructions and the backup data cache into SRAM,
5240  * and re-launches the runtime uCode from where it left off.
5241  */
5242 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5243 {
5244         __le32 *image = priv->ucode_boot.v_addr;
5245         u32 len = priv->ucode_boot.len;
5246         dma_addr_t pinst;
5247         dma_addr_t pdata;
5248         u32 inst_len;
5249         u32 data_len;
5250         int rc;
5251         int i;
5252         u32 done;
5253         u32 reg_offset;
5254
5255         IWL_DEBUG_INFO("Begin load bsm\n");
5256
5257         /* make sure bootstrap program is no larger than BSM's SRAM size */
5258         if (len > IWL_MAX_BSM_SIZE)
5259                 return -EINVAL;
5260
5261         /* Tell bootstrap uCode where to find the "Initialize" uCode
5262          *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5263          * NOTE:  iwl3945_initialize_alive_start() will replace these values,
5264          *        after the "initialize" uCode has run, to point to
5265          *        runtime/protocol instructions and backup data cache. */
5266         pinst = priv->ucode_init.p_addr;
5267         pdata = priv->ucode_init_data.p_addr;
5268         inst_len = priv->ucode_init.len;
5269         data_len = priv->ucode_init_data.len;
5270
5271         rc = iwl3945_grab_nic_access(priv);
5272         if (rc)
5273                 return rc;
5274
5275         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5276         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5277         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5278         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5279
5280         /* Fill BSM memory with bootstrap instructions */
5281         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5282              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5283              reg_offset += sizeof(u32), image++)
5284                 _iwl3945_write_prph(priv, reg_offset,
5285                                           le32_to_cpu(*image));
5286
5287         rc = iwl3945_verify_bsm(priv);
5288         if (rc) {
5289                 iwl3945_release_nic_access(priv);
5290                 return rc;
5291         }
5292
5293         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5294         iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5295         iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5296                                  RTC_INST_LOWER_BOUND);
5297         iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5298
5299         /* Load bootstrap code into instruction SRAM now,
5300          *   to prepare to load "initialize" uCode */
5301         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5302                 BSM_WR_CTRL_REG_BIT_START);
5303
5304         /* Wait for load of bootstrap uCode to finish */
5305         for (i = 0; i < 100; i++) {
5306                 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5307                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5308                         break;
5309                 udelay(10);
5310         }
5311         if (i < 100)
5312                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5313         else {
5314                 IWL_ERROR("BSM write did not complete!\n");
5315                 return -EIO;
5316         }
5317
5318         /* Enable future boot loads whenever power management unit triggers it
5319          *   (e.g. when powering back up after power-save shutdown) */
5320         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5321                 BSM_WR_CTRL_REG_BIT_START_EN);
5322
5323         iwl3945_release_nic_access(priv);
5324
5325         return 0;
5326 }
5327
5328 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5329 {
5330         /* Remove all resets to allow NIC to operate */
5331         iwl3945_write32(priv, CSR_RESET, 0);
5332 }
5333
5334 /**
5335  * iwl3945_read_ucode - Read uCode images from disk file.
5336  *
5337  * Copy into buffers for card to fetch via bus-mastering
5338  */
5339 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5340 {
5341         struct iwl3945_ucode *ucode;
5342         int ret = 0;
5343         const struct firmware *ucode_raw;
5344         /* firmware file name contains uCode/driver compatibility version */
5345         const char *name = priv->cfg->fw_name;
5346         u8 *src;
5347         size_t len;
5348         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5349
5350         /* Ask kernel firmware_class module to get the boot firmware off disk.
5351          * request_firmware() is synchronous, file is in memory on return. */
5352         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5353         if (ret < 0) {
5354                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5355                                 name, ret);
5356                 goto error;
5357         }
5358
5359         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5360                        name, ucode_raw->size);
5361
5362         /* Make sure that we got at least our header! */
5363         if (ucode_raw->size < sizeof(*ucode)) {
5364                 IWL_ERROR("File size way too small!\n");
5365                 ret = -EINVAL;
5366                 goto err_release;
5367         }
5368
5369         /* Data from ucode file:  header followed by uCode images */
5370         ucode = (void *)ucode_raw->data;
5371
5372         ver = le32_to_cpu(ucode->ver);
5373         inst_size = le32_to_cpu(ucode->inst_size);
5374         data_size = le32_to_cpu(ucode->data_size);
5375         init_size = le32_to_cpu(ucode->init_size);
5376         init_data_size = le32_to_cpu(ucode->init_data_size);
5377         boot_size = le32_to_cpu(ucode->boot_size);
5378
5379         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5380         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5381         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5382         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5383         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5384         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5385
5386         /* Verify size of file vs. image size info in file's header */
5387         if (ucode_raw->size < sizeof(*ucode) +
5388                 inst_size + data_size + init_size +
5389                 init_data_size + boot_size) {
5390
5391                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5392                                (int)ucode_raw->size);
5393                 ret = -EINVAL;
5394                 goto err_release;
5395         }
5396
5397         /* Verify that uCode images will fit in card's SRAM */
5398         if (inst_size > IWL_MAX_INST_SIZE) {
5399                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5400                                inst_size);
5401                 ret = -EINVAL;
5402                 goto err_release;
5403         }
5404
5405         if (data_size > IWL_MAX_DATA_SIZE) {
5406                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5407                                data_size);
5408                 ret = -EINVAL;
5409                 goto err_release;
5410         }
5411         if (init_size > IWL_MAX_INST_SIZE) {
5412                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5413                                 init_size);
5414                 ret = -EINVAL;
5415                 goto err_release;
5416         }
5417         if (init_data_size > IWL_MAX_DATA_SIZE) {
5418                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5419                                 init_data_size);
5420                 ret = -EINVAL;
5421                 goto err_release;
5422         }
5423         if (boot_size > IWL_MAX_BSM_SIZE) {
5424                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5425                                 boot_size);
5426                 ret = -EINVAL;
5427                 goto err_release;
5428         }
5429
5430         /* Allocate ucode buffers for card's bus-master loading ... */
5431
5432         /* Runtime instructions and 2 copies of data:
5433          * 1) unmodified from disk
5434          * 2) backup cache for save/restore during power-downs */
5435         priv->ucode_code.len = inst_size;
5436         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5437
5438         priv->ucode_data.len = data_size;
5439         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5440
5441         priv->ucode_data_backup.len = data_size;
5442         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5443
5444         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5445             !priv->ucode_data_backup.v_addr)
5446                 goto err_pci_alloc;
5447
5448         /* Initialization instructions and data */
5449         if (init_size && init_data_size) {
5450                 priv->ucode_init.len = init_size;
5451                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5452
5453                 priv->ucode_init_data.len = init_data_size;
5454                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5455
5456                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5457                         goto err_pci_alloc;
5458         }
5459
5460         /* Bootstrap (instructions only, no data) */
5461         if (boot_size) {
5462                 priv->ucode_boot.len = boot_size;
5463                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5464
5465                 if (!priv->ucode_boot.v_addr)
5466                         goto err_pci_alloc;
5467         }
5468
5469         /* Copy images into buffers for card's bus-master reads ... */
5470
5471         /* Runtime instructions (first block of data in file) */
5472         src = &ucode->data[0];
5473         len = priv->ucode_code.len;
5474         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5475         memcpy(priv->ucode_code.v_addr, src, len);
5476         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5477                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5478
5479         /* Runtime data (2nd block)
5480          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
5481         src = &ucode->data[inst_size];
5482         len = priv->ucode_data.len;
5483         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5484         memcpy(priv->ucode_data.v_addr, src, len);
5485         memcpy(priv->ucode_data_backup.v_addr, src, len);
5486
5487         /* Initialization instructions (3rd block) */
5488         if (init_size) {
5489                 src = &ucode->data[inst_size + data_size];
5490                 len = priv->ucode_init.len;
5491                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5492                                len);
5493                 memcpy(priv->ucode_init.v_addr, src, len);
5494         }
5495
5496         /* Initialization data (4th block) */
5497         if (init_data_size) {
5498                 src = &ucode->data[inst_size + data_size + init_size];
5499                 len = priv->ucode_init_data.len;
5500                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5501                                (int)len);
5502                 memcpy(priv->ucode_init_data.v_addr, src, len);
5503         }
5504
5505         /* Bootstrap instructions (5th block) */
5506         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5507         len = priv->ucode_boot.len;
5508         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5509                        (int)len);
5510         memcpy(priv->ucode_boot.v_addr, src, len);
5511
5512         /* We have our copies now, allow OS release its copies */
5513         release_firmware(ucode_raw);
5514         return 0;
5515
5516  err_pci_alloc:
5517         IWL_ERROR("failed to allocate pci memory\n");
5518         ret = -ENOMEM;
5519         iwl3945_dealloc_ucode_pci(priv);
5520
5521  err_release:
5522         release_firmware(ucode_raw);
5523
5524  error:
5525         return ret;
5526 }
5527
5528
5529 /**
5530  * iwl3945_set_ucode_ptrs - Set uCode address location
5531  *
5532  * Tell initialization uCode where to find runtime uCode.
5533  *
5534  * BSM registers initially contain pointers to initialization uCode.
5535  * We need to replace them to load runtime uCode inst and data,
5536  * and to save runtime data when powering down.
5537  */
5538 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
5539 {
5540         dma_addr_t pinst;
5541         dma_addr_t pdata;
5542         int rc = 0;
5543         unsigned long flags;
5544
5545         /* bits 31:0 for 3945 */
5546         pinst = priv->ucode_code.p_addr;
5547         pdata = priv->ucode_data_backup.p_addr;
5548
5549         spin_lock_irqsave(&priv->lock, flags);
5550         rc = iwl3945_grab_nic_access(priv);
5551         if (rc) {
5552                 spin_unlock_irqrestore(&priv->lock, flags);
5553                 return rc;
5554         }
5555
5556         /* Tell bootstrap uCode where to find image to load */
5557         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5558         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5559         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5560                                  priv->ucode_data.len);
5561
5562         /* Inst bytecount must be last to set up, bit 31 signals uCode
5563          *   that all new ptr/size info is in place */
5564         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5565                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5566
5567         iwl3945_release_nic_access(priv);
5568
5569         spin_unlock_irqrestore(&priv->lock, flags);
5570
5571         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5572
5573         return rc;
5574 }
5575
5576 /**
5577  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5578  *
5579  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5580  *
5581  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5582  */
5583 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
5584 {
5585         /* Check alive response for "valid" sign from uCode */
5586         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5587                 /* We had an error bringing up the hardware, so take it
5588                  * all the way back down so we can try again */
5589                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5590                 goto restart;
5591         }
5592
5593         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5594          * This is a paranoid check, because we would not have gotten the
5595          * "initialize" alive if code weren't properly loaded.  */
5596         if (iwl3945_verify_ucode(priv)) {
5597                 /* Runtime instruction load was bad;
5598                  * take it all the way back down so we can try again */
5599                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5600                 goto restart;
5601         }
5602
5603         /* Send pointers to protocol/runtime uCode image ... init code will
5604          * load and launch runtime uCode, which will send us another "Alive"
5605          * notification. */
5606         IWL_DEBUG_INFO("Initialization Alive received.\n");
5607         if (iwl3945_set_ucode_ptrs(priv)) {
5608                 /* Runtime instruction load won't happen;
5609                  * take it all the way back down so we can try again */
5610                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5611                 goto restart;
5612         }
5613         return;
5614
5615  restart:
5616         queue_work(priv->workqueue, &priv->restart);
5617 }
5618
5619
5620 /**
5621  * iwl3945_alive_start - called after REPLY_ALIVE notification received
5622  *                   from protocol/runtime uCode (initialization uCode's
5623  *                   Alive gets handled by iwl3945_init_alive_start()).
5624  */
5625 static void iwl3945_alive_start(struct iwl3945_priv *priv)
5626 {
5627         int rc = 0;
5628         int thermal_spin = 0;
5629         u32 rfkill;
5630
5631         IWL_DEBUG_INFO("Runtime Alive received.\n");
5632
5633         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5634                 /* We had an error bringing up the hardware, so take it
5635                  * all the way back down so we can try again */
5636                 IWL_DEBUG_INFO("Alive failed.\n");
5637                 goto restart;
5638         }
5639
5640         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5641          * This is a paranoid check, because we would not have gotten the
5642          * "runtime" alive if code weren't properly loaded.  */
5643         if (iwl3945_verify_ucode(priv)) {
5644                 /* Runtime instruction load was bad;
5645                  * take it all the way back down so we can try again */
5646                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5647                 goto restart;
5648         }
5649
5650         iwl3945_clear_stations_table(priv);
5651
5652         rc = iwl3945_grab_nic_access(priv);
5653         if (rc) {
5654                 IWL_WARNING("Can not read rfkill status from adapter\n");
5655                 return;
5656         }
5657
5658         rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
5659         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5660         iwl3945_release_nic_access(priv);
5661
5662         if (rfkill & 0x1) {
5663                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5664                 /* if rfkill is not on, then wait for thermal
5665                  * sensor in adapter to kick in */
5666                 while (iwl3945_hw_get_temperature(priv) == 0) {
5667                         thermal_spin++;
5668                         udelay(10);
5669                 }
5670
5671                 if (thermal_spin)
5672                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5673                                        thermal_spin * 10);
5674         } else
5675                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5676
5677         /* After the ALIVE response, we can send commands to 3945 uCode */
5678         set_bit(STATUS_ALIVE, &priv->status);
5679
5680         /* Clear out the uCode error bit if it is set */
5681         clear_bit(STATUS_FW_ERROR, &priv->status);
5682
5683         if (iwl3945_is_rfkill(priv))
5684                 return;
5685
5686         ieee80211_wake_queues(priv->hw);
5687
5688         priv->active_rate = priv->rates_mask;
5689         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5690
5691         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5692
5693         if (iwl3945_is_associated(priv)) {
5694                 struct iwl3945_rxon_cmd *active_rxon =
5695                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
5696
5697                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5698                        sizeof(priv->staging_rxon));
5699                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5700         } else {
5701                 /* Initialize our rx_config data */
5702                 iwl3945_connection_init_rx_config(priv);
5703                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5704         }
5705
5706         /* Configure Bluetooth device coexistence support */
5707         iwl3945_send_bt_config(priv);
5708
5709         /* Configure the adapter for unassociated operation */
5710         iwl3945_commit_rxon(priv);
5711
5712         iwl3945_reg_txpower_periodic(priv);
5713
5714         iwl3945_led_register(priv);
5715
5716         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5717         set_bit(STATUS_READY, &priv->status);
5718         wake_up_interruptible(&priv->wait_command_queue);
5719
5720         if (priv->error_recovering)
5721                 iwl3945_error_recovery(priv);
5722
5723         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
5724         return;
5725
5726  restart:
5727         queue_work(priv->workqueue, &priv->restart);
5728 }
5729
5730 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
5731
5732 static void __iwl3945_down(struct iwl3945_priv *priv)
5733 {
5734         unsigned long flags;
5735         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5736         struct ieee80211_conf *conf = NULL;
5737
5738         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5739
5740         conf = ieee80211_get_hw_conf(priv->hw);
5741
5742         if (!exit_pending)
5743                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5744
5745         iwl3945_led_unregister(priv);
5746         iwl3945_clear_stations_table(priv);
5747
5748         /* Unblock any waiting calls */
5749         wake_up_interruptible_all(&priv->wait_command_queue);
5750
5751         /* Wipe out the EXIT_PENDING status bit if we are not actually
5752          * exiting the module */
5753         if (!exit_pending)
5754                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5755
5756         /* stop and reset the on-board processor */
5757         iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5758
5759         /* tell the device to stop sending interrupts */
5760         spin_lock_irqsave(&priv->lock, flags);
5761         iwl3945_disable_interrupts(priv);
5762         spin_unlock_irqrestore(&priv->lock, flags);
5763         iwl_synchronize_irq(priv);
5764
5765         if (priv->mac80211_registered)
5766                 ieee80211_stop_queues(priv->hw);
5767
5768         /* If we have not previously called iwl3945_init() then
5769          * clear all bits but the RF Kill and SUSPEND bits and return */
5770         if (!iwl3945_is_init(priv)) {
5771                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5772                                         STATUS_RF_KILL_HW |
5773                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5774                                         STATUS_RF_KILL_SW |
5775                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5776                                         STATUS_GEO_CONFIGURED |
5777                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5778                                         STATUS_IN_SUSPEND |
5779                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5780                                         STATUS_EXIT_PENDING;
5781                 goto exit;
5782         }
5783
5784         /* ...otherwise clear out all the status bits but the RF Kill and
5785          * SUSPEND bits and continue taking the NIC down. */
5786         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5787                                 STATUS_RF_KILL_HW |
5788                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5789                                 STATUS_RF_KILL_SW |
5790                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5791                                 STATUS_GEO_CONFIGURED |
5792                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5793                                 STATUS_IN_SUSPEND |
5794                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5795                                 STATUS_FW_ERROR |
5796                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5797                                 STATUS_EXIT_PENDING;
5798
5799         spin_lock_irqsave(&priv->lock, flags);
5800         iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5801         spin_unlock_irqrestore(&priv->lock, flags);
5802
5803         iwl3945_hw_txq_ctx_stop(priv);
5804         iwl3945_hw_rxq_stop(priv);
5805
5806         spin_lock_irqsave(&priv->lock, flags);
5807         if (!iwl3945_grab_nic_access(priv)) {
5808                 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
5809                                          APMG_CLK_VAL_DMA_CLK_RQT);
5810                 iwl3945_release_nic_access(priv);
5811         }
5812         spin_unlock_irqrestore(&priv->lock, flags);
5813
5814         udelay(5);
5815
5816         iwl3945_hw_nic_stop_master(priv);
5817         iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5818         iwl3945_hw_nic_reset(priv);
5819
5820  exit:
5821         memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
5822
5823         if (priv->ibss_beacon)
5824                 dev_kfree_skb(priv->ibss_beacon);
5825         priv->ibss_beacon = NULL;
5826
5827         /* clear out any free frames */
5828         iwl3945_clear_free_frames(priv);
5829 }
5830
5831 static void iwl3945_down(struct iwl3945_priv *priv)
5832 {
5833         mutex_lock(&priv->mutex);
5834         __iwl3945_down(priv);
5835         mutex_unlock(&priv->mutex);
5836
5837         iwl3945_cancel_deferred_work(priv);
5838 }
5839
5840 #define MAX_HW_RESTARTS 5
5841
5842 static int __iwl3945_up(struct iwl3945_priv *priv)
5843 {
5844         int rc, i;
5845
5846         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5847                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5848                 return -EIO;
5849         }
5850
5851         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5852                 IWL_WARNING("Radio disabled by SW RF kill (module "
5853                             "parameter)\n");
5854                 return -ENODEV;
5855         }
5856
5857         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5858                 IWL_ERROR("ucode not available for device bringup\n");
5859                 return -EIO;
5860         }
5861
5862         /* If platform's RF_KILL switch is NOT set to KILL */
5863         if (iwl3945_read32(priv, CSR_GP_CNTRL) &
5864                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5865                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5866         else {
5867                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5868                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5869                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5870                         return -ENODEV;
5871                 }
5872         }
5873
5874         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
5875
5876         rc = iwl3945_hw_nic_init(priv);
5877         if (rc) {
5878                 IWL_ERROR("Unable to int nic\n");
5879                 return rc;
5880         }
5881
5882         /* make sure rfkill handshake bits are cleared */
5883         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5884         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5885                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5886
5887         /* clear (again), then enable host interrupts */
5888         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
5889         iwl3945_enable_interrupts(priv);
5890
5891         /* really make sure rfkill handshake bits are cleared */
5892         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5893         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5894
5895         /* Copy original ucode data image from disk into backup cache.
5896          * This will be used to initialize the on-board processor's
5897          * data SRAM for a clean start when the runtime program first loads. */
5898         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5899                priv->ucode_data.len);
5900
5901         /* We return success when we resume from suspend and rf_kill is on. */
5902         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5903                 return 0;
5904
5905         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5906
5907                 iwl3945_clear_stations_table(priv);
5908
5909                 /* load bootstrap state machine,
5910                  * load bootstrap program into processor's memory,
5911                  * prepare to load the "initialize" uCode */
5912                 rc = iwl3945_load_bsm(priv);
5913
5914                 if (rc) {
5915                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5916                         continue;
5917                 }
5918
5919                 /* start card; "initialize" will load runtime ucode */
5920                 iwl3945_nic_start(priv);
5921
5922                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5923
5924                 return 0;
5925         }
5926
5927         set_bit(STATUS_EXIT_PENDING, &priv->status);
5928         __iwl3945_down(priv);
5929         clear_bit(STATUS_EXIT_PENDING, &priv->status);
5930
5931         /* tried to restart and config the device for as long as our
5932          * patience could withstand */
5933         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5934         return -EIO;
5935 }
5936
5937
5938 /*****************************************************************************
5939  *
5940  * Workqueue callbacks
5941  *
5942  *****************************************************************************/
5943
5944 static void iwl3945_bg_init_alive_start(struct work_struct *data)
5945 {
5946         struct iwl3945_priv *priv =
5947             container_of(data, struct iwl3945_priv, init_alive_start.work);
5948
5949         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5950                 return;
5951
5952         mutex_lock(&priv->mutex);
5953         iwl3945_init_alive_start(priv);
5954         mutex_unlock(&priv->mutex);
5955 }
5956
5957 static void iwl3945_bg_alive_start(struct work_struct *data)
5958 {
5959         struct iwl3945_priv *priv =
5960             container_of(data, struct iwl3945_priv, alive_start.work);
5961
5962         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5963                 return;
5964
5965         mutex_lock(&priv->mutex);
5966         iwl3945_alive_start(priv);
5967         mutex_unlock(&priv->mutex);
5968 }
5969
5970 static void iwl3945_bg_rf_kill(struct work_struct *work)
5971 {
5972         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
5973
5974         wake_up_interruptible(&priv->wait_command_queue);
5975
5976         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5977                 return;
5978
5979         mutex_lock(&priv->mutex);
5980
5981         if (!iwl3945_is_rfkill(priv)) {
5982                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5983                           "HW and/or SW RF Kill no longer active, restarting "
5984                           "device\n");
5985                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5986                         queue_work(priv->workqueue, &priv->restart);
5987         } else {
5988
5989                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5990                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5991                                           "disabled by SW switch\n");
5992                 else
5993                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5994                                     "Kill switch must be turned off for "
5995                                     "wireless networking to work.\n");
5996         }
5997
5998         mutex_unlock(&priv->mutex);
5999         iwl3945_rfkill_set_hw_state(priv);
6000 }
6001
6002 static void iwl3945_bg_set_monitor(struct work_struct *work)
6003 {
6004         struct iwl3945_priv *priv = container_of(work,
6005                                 struct iwl3945_priv, set_monitor);
6006
6007         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
6008
6009         mutex_lock(&priv->mutex);
6010
6011         if (!iwl3945_is_ready(priv))
6012                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
6013         else
6014                 if (iwl3945_set_mode(priv, NL80211_IFTYPE_MONITOR) != 0)
6015                         IWL_ERROR("iwl3945_set_mode() failed\n");
6016
6017         mutex_unlock(&priv->mutex);
6018 }
6019
6020 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6021
6022 static void iwl3945_bg_scan_check(struct work_struct *data)
6023 {
6024         struct iwl3945_priv *priv =
6025             container_of(data, struct iwl3945_priv, scan_check.work);
6026
6027         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6028                 return;
6029
6030         mutex_lock(&priv->mutex);
6031         if (test_bit(STATUS_SCANNING, &priv->status) ||
6032             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6033                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6034                           "Scan completion watchdog resetting adapter (%dms)\n",
6035                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6036
6037                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6038                         iwl3945_send_scan_abort(priv);
6039         }
6040         mutex_unlock(&priv->mutex);
6041 }
6042
6043 static void iwl3945_bg_request_scan(struct work_struct *data)
6044 {
6045         struct iwl3945_priv *priv =
6046             container_of(data, struct iwl3945_priv, request_scan);
6047         struct iwl3945_host_cmd cmd = {
6048                 .id = REPLY_SCAN_CMD,
6049                 .len = sizeof(struct iwl3945_scan_cmd),
6050                 .meta.flags = CMD_SIZE_HUGE,
6051         };
6052         int rc = 0;
6053         struct iwl3945_scan_cmd *scan;
6054         struct ieee80211_conf *conf = NULL;
6055         u8 n_probes = 2;
6056         enum ieee80211_band band;
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 cancelled 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                      escape_ssid(priv->direct_ssid, priv->direct_ssid_len));
6158                 scan->direct_scan[0].id = WLAN_EID_SSID;
6159                 scan->direct_scan[0].len = priv->direct_ssid_len;
6160                 memcpy(scan->direct_scan[0].ssid,
6161                        priv->direct_ssid, priv->direct_ssid_len);
6162                 n_probes++;
6163         } else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6164                 IWL_DEBUG_SCAN
6165                   ("Kicking off one direct scan for '%s' when not associated\n",
6166                    escape_ssid(priv->essid, priv->essid_len));
6167                 scan->direct_scan[0].id = WLAN_EID_SSID;
6168                 scan->direct_scan[0].len = priv->essid_len;
6169                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6170                 n_probes++;
6171         } else
6172                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
6173
6174         /* We don't build a direct scan probe request; the uCode will do
6175          * that based on the direct_mask added to each channel entry */
6176         scan->tx_cmd.len = cpu_to_le16(
6177                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6178                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
6179         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6180         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6181         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6182
6183         /* flags + rate selection */
6184
6185         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
6186                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6187                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6188                 scan->good_CRC_th = 0;
6189                 band = IEEE80211_BAND_2GHZ;
6190         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
6191                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6192                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6193                 band = IEEE80211_BAND_5GHZ;
6194         } else {
6195                 IWL_WARNING("Invalid scan band count\n");
6196                 goto done;
6197         }
6198
6199         /* select Rx antennas */
6200         scan->flags |= iwl3945_get_antenna_flags(priv);
6201
6202         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
6203                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6204
6205         scan->channel_count =
6206                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
6207                                               n_probes,
6208                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6209
6210         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6211             scan->channel_count * sizeof(struct iwl3945_scan_channel);
6212         cmd.data = scan;
6213         scan->len = cpu_to_le16(cmd.len);
6214
6215         set_bit(STATUS_SCAN_HW, &priv->status);
6216         rc = iwl3945_send_cmd_sync(priv, &cmd);
6217         if (rc)
6218                 goto done;
6219
6220         queue_delayed_work(priv->workqueue, &priv->scan_check,
6221                            IWL_SCAN_CHECK_WATCHDOG);
6222
6223         mutex_unlock(&priv->mutex);
6224         return;
6225
6226  done:
6227         /* inform mac80211 scan aborted */
6228         queue_work(priv->workqueue, &priv->scan_completed);
6229         mutex_unlock(&priv->mutex);
6230 }
6231
6232 static void iwl3945_bg_up(struct work_struct *data)
6233 {
6234         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6235
6236         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6237                 return;
6238
6239         mutex_lock(&priv->mutex);
6240         __iwl3945_up(priv);
6241         mutex_unlock(&priv->mutex);
6242         iwl3945_rfkill_set_hw_state(priv);
6243 }
6244
6245 static void iwl3945_bg_restart(struct work_struct *data)
6246 {
6247         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6248
6249         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6250                 return;
6251
6252         iwl3945_down(priv);
6253         queue_work(priv->workqueue, &priv->up);
6254 }
6255
6256 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6257 {
6258         struct iwl3945_priv *priv =
6259             container_of(data, struct iwl3945_priv, rx_replenish);
6260
6261         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6262                 return;
6263
6264         mutex_lock(&priv->mutex);
6265         iwl3945_rx_replenish(priv);
6266         mutex_unlock(&priv->mutex);
6267 }
6268
6269 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6270
6271 static void iwl3945_post_associate(struct iwl3945_priv *priv)
6272 {
6273         int rc = 0;
6274         struct ieee80211_conf *conf = NULL;
6275
6276         if (priv->iw_mode == NL80211_IFTYPE_AP) {
6277                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
6278                 return;
6279         }
6280
6281
6282         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
6283                         priv->assoc_id, priv->active_rxon.bssid_addr);
6284
6285         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6286                 return;
6287
6288         if (!priv->vif || !priv->is_open)
6289                 return;
6290
6291         iwl3945_scan_cancel_timeout(priv, 200);
6292
6293         conf = ieee80211_get_hw_conf(priv->hw);
6294
6295         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6296         iwl3945_commit_rxon(priv);
6297
6298         memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6299         iwl3945_setup_rxon_timing(priv);
6300         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6301                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6302         if (rc)
6303                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6304                             "Attempting to continue.\n");
6305
6306         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6307
6308         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6309
6310         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6311                         priv->assoc_id, priv->beacon_int);
6312
6313         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6314                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6315         else
6316                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6317
6318         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6319                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6320                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6321                 else
6322                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6323
6324                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6325                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6326
6327         }
6328
6329         iwl3945_commit_rxon(priv);
6330
6331         switch (priv->iw_mode) {
6332         case NL80211_IFTYPE_STATION:
6333                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6334                 break;
6335
6336         case NL80211_IFTYPE_ADHOC:
6337
6338                 /* clear out the station table */
6339                 iwl3945_clear_stations_table(priv);
6340
6341                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6342                 iwl3945_add_station(priv, priv->bssid, 0, 0);
6343                 iwl3945_sync_sta(priv, IWL_STA_ID,
6344                                  (priv->band == IEEE80211_BAND_5GHZ) ?
6345                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6346                                  CMD_ASYNC);
6347                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6348                 iwl3945_send_beacon_cmd(priv);
6349
6350                 break;
6351
6352         default:
6353                  IWL_ERROR("%s Should not be called in %d mode\n",
6354                            __func__, priv->iw_mode);
6355                 break;
6356         }
6357
6358         iwl3945_activate_qos(priv, 0);
6359
6360         /* we have just associated, don't start scan too early */
6361         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6362 }
6363
6364 static void iwl3945_bg_abort_scan(struct work_struct *work)
6365 {
6366         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6367
6368         if (!iwl3945_is_ready(priv))
6369                 return;
6370
6371         mutex_lock(&priv->mutex);
6372
6373         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6374         iwl3945_send_scan_abort(priv);
6375
6376         mutex_unlock(&priv->mutex);
6377 }
6378
6379 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
6380
6381 static void iwl3945_bg_scan_completed(struct work_struct *work)
6382 {
6383         struct iwl3945_priv *priv =
6384             container_of(work, struct iwl3945_priv, scan_completed);
6385
6386         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6387
6388         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6389                 return;
6390
6391         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6392                 iwl3945_mac_config(priv->hw, 0);
6393
6394         ieee80211_scan_completed(priv->hw);
6395
6396         /* Since setting the TXPOWER may have been deferred while
6397          * performing the scan, fire one off */
6398         mutex_lock(&priv->mutex);
6399         iwl3945_hw_reg_send_txpower(priv);
6400         mutex_unlock(&priv->mutex);
6401 }
6402
6403 /*****************************************************************************
6404  *
6405  * mac80211 entry point functions
6406  *
6407  *****************************************************************************/
6408
6409 #define UCODE_READY_TIMEOUT     (2 * HZ)
6410
6411 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6412 {
6413         struct iwl3945_priv *priv = hw->priv;
6414         int ret;
6415
6416         IWL_DEBUG_MAC80211("enter\n");
6417
6418         if (pci_enable_device(priv->pci_dev)) {
6419                 IWL_ERROR("Fail to pci_enable_device\n");
6420                 return -ENODEV;
6421         }
6422         pci_restore_state(priv->pci_dev);
6423         pci_enable_msi(priv->pci_dev);
6424
6425         ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6426                           DRV_NAME, priv);
6427         if (ret) {
6428                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6429                 goto out_disable_msi;
6430         }
6431
6432         /* we should be verifying the device is ready to be opened */
6433         mutex_lock(&priv->mutex);
6434
6435         memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6436         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6437          * ucode filename and max sizes are card-specific. */
6438
6439         if (!priv->ucode_code.len) {
6440                 ret = iwl3945_read_ucode(priv);
6441                 if (ret) {
6442                         IWL_ERROR("Could not read microcode: %d\n", ret);
6443                         mutex_unlock(&priv->mutex);
6444                         goto out_release_irq;
6445                 }
6446         }
6447
6448         ret = __iwl3945_up(priv);
6449
6450         mutex_unlock(&priv->mutex);
6451
6452         iwl3945_rfkill_set_hw_state(priv);
6453
6454         if (ret)
6455                 goto out_release_irq;
6456
6457         IWL_DEBUG_INFO("Start UP work.\n");
6458
6459         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6460                 return 0;
6461
6462         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6463          * mac80211 will not be run successfully. */
6464         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6465                         test_bit(STATUS_READY, &priv->status),
6466                         UCODE_READY_TIMEOUT);
6467         if (!ret) {
6468                 if (!test_bit(STATUS_READY, &priv->status)) {
6469                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6470                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6471                         ret = -ETIMEDOUT;
6472                         goto out_release_irq;
6473                 }
6474         }
6475
6476         priv->is_open = 1;
6477         IWL_DEBUG_MAC80211("leave\n");
6478         return 0;
6479
6480 out_release_irq:
6481         free_irq(priv->pci_dev->irq, priv);
6482 out_disable_msi:
6483         pci_disable_msi(priv->pci_dev);
6484         pci_disable_device(priv->pci_dev);
6485         priv->is_open = 0;
6486         IWL_DEBUG_MAC80211("leave - failed\n");
6487         return ret;
6488 }
6489
6490 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6491 {
6492         struct iwl3945_priv *priv = hw->priv;
6493
6494         IWL_DEBUG_MAC80211("enter\n");
6495
6496         if (!priv->is_open) {
6497                 IWL_DEBUG_MAC80211("leave - skip\n");
6498                 return;
6499         }
6500
6501         priv->is_open = 0;
6502
6503         if (iwl3945_is_ready_rf(priv)) {
6504                 /* stop mac, cancel any scan request and clear
6505                  * RXON_FILTER_ASSOC_MSK BIT
6506                  */
6507                 mutex_lock(&priv->mutex);
6508                 iwl3945_scan_cancel_timeout(priv, 100);
6509                 mutex_unlock(&priv->mutex);
6510         }
6511
6512         iwl3945_down(priv);
6513
6514         flush_workqueue(priv->workqueue);
6515         free_irq(priv->pci_dev->irq, priv);
6516         pci_disable_msi(priv->pci_dev);
6517         pci_save_state(priv->pci_dev);
6518         pci_disable_device(priv->pci_dev);
6519
6520         IWL_DEBUG_MAC80211("leave\n");
6521 }
6522
6523 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
6524 {
6525         struct iwl3945_priv *priv = hw->priv;
6526
6527         IWL_DEBUG_MAC80211("enter\n");
6528
6529         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6530                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
6531
6532         if (iwl3945_tx_skb(priv, skb))
6533                 dev_kfree_skb_any(skb);
6534
6535         IWL_DEBUG_MAC80211("leave\n");
6536         return 0;
6537 }
6538
6539 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6540                                  struct ieee80211_if_init_conf *conf)
6541 {
6542         struct iwl3945_priv *priv = hw->priv;
6543         unsigned long flags;
6544
6545         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6546
6547         if (priv->vif) {
6548                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6549                 return -EOPNOTSUPP;
6550         }
6551
6552         spin_lock_irqsave(&priv->lock, flags);
6553         priv->vif = conf->vif;
6554
6555         spin_unlock_irqrestore(&priv->lock, flags);
6556
6557         mutex_lock(&priv->mutex);
6558
6559         if (conf->mac_addr) {
6560                 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
6561                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6562         }
6563
6564         if (iwl3945_is_ready(priv))
6565                 iwl3945_set_mode(priv, conf->type);
6566
6567         mutex_unlock(&priv->mutex);
6568
6569         IWL_DEBUG_MAC80211("leave\n");
6570         return 0;
6571 }
6572
6573 /**
6574  * iwl3945_mac_config - mac80211 config callback
6575  *
6576  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6577  * be set inappropriately and the driver currently sets the hardware up to
6578  * use it whenever needed.
6579  */
6580 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
6581 {
6582         struct iwl3945_priv *priv = hw->priv;
6583         const struct iwl3945_channel_info *ch_info;
6584         struct ieee80211_conf *conf = &hw->conf;
6585         unsigned long flags;
6586         int ret = 0;
6587
6588         mutex_lock(&priv->mutex);
6589         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6590
6591         if (!iwl3945_is_ready(priv)) {
6592                 IWL_DEBUG_MAC80211("leave - not ready\n");
6593                 ret = -EIO;
6594                 goto out;
6595         }
6596
6597         if (unlikely(!iwl3945_param_disable_hw_scan &&
6598                      test_bit(STATUS_SCANNING, &priv->status))) {
6599                 IWL_DEBUG_MAC80211("leave - scanning\n");
6600                 set_bit(STATUS_CONF_PENDING, &priv->status);
6601                 mutex_unlock(&priv->mutex);
6602                 return 0;
6603         }
6604
6605         spin_lock_irqsave(&priv->lock, flags);
6606
6607         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6608                                            conf->channel->hw_value);
6609         if (!is_channel_valid(ch_info)) {
6610                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6611                                conf->channel->hw_value, conf->channel->band);
6612                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6613                 spin_unlock_irqrestore(&priv->lock, flags);
6614                 ret = -EINVAL;
6615                 goto out;
6616         }
6617
6618         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6619
6620         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6621
6622         /* The list of supported rates and rate mask can be different
6623          * for each phymode; since the phymode may have changed, reset
6624          * the rate mask to what mac80211 lists */
6625         iwl3945_set_rate(priv);
6626
6627         spin_unlock_irqrestore(&priv->lock, flags);
6628
6629 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6630         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6631                 iwl3945_hw_channel_switch(priv, conf->channel);
6632                 goto out;
6633         }
6634 #endif
6635
6636         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6637
6638         if (!conf->radio_enabled) {
6639                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6640                 goto out;
6641         }
6642
6643         if (iwl3945_is_rfkill(priv)) {
6644                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6645                 ret = -EIO;
6646                 goto out;
6647         }
6648
6649         iwl3945_set_rate(priv);
6650
6651         if (memcmp(&priv->active_rxon,
6652                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6653                 iwl3945_commit_rxon(priv);
6654         else
6655                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6656
6657         IWL_DEBUG_MAC80211("leave\n");
6658
6659 out:
6660         clear_bit(STATUS_CONF_PENDING, &priv->status);
6661         mutex_unlock(&priv->mutex);
6662         return ret;
6663 }
6664
6665 static void iwl3945_config_ap(struct iwl3945_priv *priv)
6666 {
6667         int rc = 0;
6668
6669         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6670                 return;
6671
6672         /* The following should be done only at AP bring up */
6673         if (!(iwl3945_is_associated(priv))) {
6674
6675                 /* RXON - unassoc (to set timing command) */
6676                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6677                 iwl3945_commit_rxon(priv);
6678
6679                 /* RXON Timing */
6680                 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6681                 iwl3945_setup_rxon_timing(priv);
6682                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6683                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6684                 if (rc)
6685                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6686                                         "Attempting to continue.\n");
6687
6688                 /* FIXME: what should be the assoc_id for AP? */
6689                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6690                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6691                         priv->staging_rxon.flags |=
6692                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6693                 else
6694                         priv->staging_rxon.flags &=
6695                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6696
6697                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6698                         if (priv->assoc_capability &
6699                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6700                                 priv->staging_rxon.flags |=
6701                                         RXON_FLG_SHORT_SLOT_MSK;
6702                         else
6703                                 priv->staging_rxon.flags &=
6704                                         ~RXON_FLG_SHORT_SLOT_MSK;
6705
6706                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6707                                 priv->staging_rxon.flags &=
6708                                         ~RXON_FLG_SHORT_SLOT_MSK;
6709                 }
6710                 /* restore RXON assoc */
6711                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6712                 iwl3945_commit_rxon(priv);
6713                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6714         }
6715         iwl3945_send_beacon_cmd(priv);
6716
6717         /* FIXME - we need to add code here to detect a totally new
6718          * configuration, reset the AP, unassoc, rxon timing, assoc,
6719          * clear sta table, add BCAST sta... */
6720 }
6721
6722 /* temporary */
6723 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
6724
6725 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6726                                         struct ieee80211_vif *vif,
6727                                     struct ieee80211_if_conf *conf)
6728 {
6729         struct iwl3945_priv *priv = hw->priv;
6730         unsigned long flags;
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                 rc = iwl3945_mac_beacon_update(hw, beacon);
6748                 if (rc)
6749                         return rc;
6750         }
6751
6752         /* XXX: this MUST use conf->mac_addr */
6753
6754         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
6755             (!conf->ssid_len)) {
6756                 IWL_DEBUG_MAC80211
6757                     ("Leaving in AP mode because HostAPD is not ready.\n");
6758                 return 0;
6759         }
6760
6761         if (!iwl3945_is_alive(priv))
6762                 return -EAGAIN;
6763
6764         mutex_lock(&priv->mutex);
6765
6766         if (conf->bssid)
6767                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
6768
6769 /*
6770  * very dubious code was here; the probe filtering flag is never set:
6771  *
6772         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6773             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6774  */
6775
6776         if (priv->iw_mode == NL80211_IFTYPE_AP) {
6777                 if (!conf->bssid) {
6778                         conf->bssid = priv->mac_addr;
6779                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6780                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
6781                                            conf->bssid);
6782                 }
6783                 if (priv->ibss_beacon)
6784                         dev_kfree_skb(priv->ibss_beacon);
6785
6786                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
6787         }
6788
6789         if (iwl3945_is_rfkill(priv))
6790                 goto done;
6791
6792         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6793             !is_multicast_ether_addr(conf->bssid)) {
6794                 /* If there is currently a HW scan going on in the background
6795                  * then we need to cancel it else the RXON below will fail. */
6796                 if (iwl3945_scan_cancel_timeout(priv, 100)) {
6797                         IWL_WARNING("Aborted scan still in progress "
6798                                     "after 100ms\n");
6799                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6800                         mutex_unlock(&priv->mutex);
6801                         return -EAGAIN;
6802                 }
6803                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6804
6805                 /* TODO: Audit driver for usage of these members and see
6806                  * if mac80211 deprecates them (priv->bssid looks like it
6807                  * shouldn't be there, but I haven't scanned the IBSS code
6808                  * to verify) - jpk */
6809                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6810
6811                 if (priv->iw_mode == NL80211_IFTYPE_AP)
6812                         iwl3945_config_ap(priv);
6813                 else {
6814                         rc = iwl3945_commit_rxon(priv);
6815                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
6816                                 iwl3945_add_station(priv,
6817                                         priv->active_rxon.bssid_addr, 1, 0);
6818                 }
6819
6820         } else {
6821                 iwl3945_scan_cancel_timeout(priv, 100);
6822                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6823                 iwl3945_commit_rxon(priv);
6824         }
6825
6826  done:
6827         spin_lock_irqsave(&priv->lock, flags);
6828         if (!conf->ssid_len)
6829                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6830         else
6831                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6832
6833         priv->essid_len = conf->ssid_len;
6834         spin_unlock_irqrestore(&priv->lock, flags);
6835
6836         IWL_DEBUG_MAC80211("leave\n");
6837         mutex_unlock(&priv->mutex);
6838
6839         return 0;
6840 }
6841
6842 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6843                                  unsigned int changed_flags,
6844                                  unsigned int *total_flags,
6845                                  int mc_count, struct dev_addr_list *mc_list)
6846 {
6847         struct iwl3945_priv *priv = hw->priv;
6848
6849         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
6850                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
6851                                    NL80211_IFTYPE_MONITOR,
6852                                    changed_flags, *total_flags);
6853                 /* queue work 'cuz mac80211 is holding a lock which
6854                  * prevents us from issuing (synchronous) f/w cmds */
6855                 queue_work(priv->workqueue, &priv->set_monitor);
6856         }
6857         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
6858                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6859 }
6860
6861 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
6862                                      struct ieee80211_if_init_conf *conf)
6863 {
6864         struct iwl3945_priv *priv = hw->priv;
6865
6866         IWL_DEBUG_MAC80211("enter\n");
6867
6868         mutex_lock(&priv->mutex);
6869
6870         if (iwl3945_is_ready_rf(priv)) {
6871                 iwl3945_scan_cancel_timeout(priv, 100);
6872                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6873                 iwl3945_commit_rxon(priv);
6874         }
6875         if (priv->vif == conf->vif) {
6876                 priv->vif = NULL;
6877                 memset(priv->bssid, 0, ETH_ALEN);
6878                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6879                 priv->essid_len = 0;
6880         }
6881         mutex_unlock(&priv->mutex);
6882
6883         IWL_DEBUG_MAC80211("leave\n");
6884 }
6885
6886 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6887
6888 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
6889                                      struct ieee80211_vif *vif,
6890                                      struct ieee80211_bss_conf *bss_conf,
6891                                      u32 changes)
6892 {
6893         struct iwl3945_priv *priv = hw->priv;
6894
6895         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6896
6897         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6898                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6899                                    bss_conf->use_short_preamble);
6900                 if (bss_conf->use_short_preamble)
6901                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6902                 else
6903                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6904         }
6905
6906         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6907                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6908                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6909                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6910                 else
6911                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6912         }
6913
6914         if (changes & BSS_CHANGED_ASSOC) {
6915                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6916                 /* This should never happen as this function should
6917                  * never be called from interrupt context. */
6918                 if (WARN_ON_ONCE(in_interrupt()))
6919                         return;
6920                 if (bss_conf->assoc) {
6921                         priv->assoc_id = bss_conf->aid;
6922                         priv->beacon_int = bss_conf->beacon_int;
6923                         priv->timestamp0 = bss_conf->timestamp & 0xFFFFFFFF;
6924                         priv->timestamp1 = (bss_conf->timestamp >> 32) &
6925                                              0xFFFFFFFF;
6926                         priv->assoc_capability = bss_conf->assoc_capability;
6927                         priv->next_scan_jiffies = jiffies +
6928                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6929                         mutex_lock(&priv->mutex);
6930                         iwl3945_post_associate(priv);
6931                         mutex_unlock(&priv->mutex);
6932                 } else {
6933                         priv->assoc_id = 0;
6934                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6935                 }
6936         } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
6937                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6938                         iwl3945_send_rxon_assoc(priv);
6939         }
6940
6941 }
6942
6943 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6944 {
6945         int rc = 0;
6946         unsigned long flags;
6947         struct iwl3945_priv *priv = hw->priv;
6948
6949         IWL_DEBUG_MAC80211("enter\n");
6950
6951         mutex_lock(&priv->mutex);
6952         spin_lock_irqsave(&priv->lock, flags);
6953
6954         if (!iwl3945_is_ready_rf(priv)) {
6955                 rc = -EIO;
6956                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6957                 goto out_unlock;
6958         }
6959
6960         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
6961                 rc = -EIO;
6962                 IWL_ERROR("ERROR: APs don't scan\n");
6963                 goto out_unlock;
6964         }
6965
6966         /* we don't schedule scan within next_scan_jiffies period */
6967         if (priv->next_scan_jiffies &&
6968                         time_after(priv->next_scan_jiffies, jiffies)) {
6969                 rc = -EAGAIN;
6970                 goto out_unlock;
6971         }
6972         /* if we just finished scan ask for delay for a broadcast scan */
6973         if ((len == 0) && priv->last_scan_jiffies &&
6974             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
6975                        jiffies)) {
6976                 rc = -EAGAIN;
6977                 goto out_unlock;
6978         }
6979         if (len) {
6980                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6981                                escape_ssid(ssid, len), (int)len);
6982
6983                 priv->one_direct_scan = 1;
6984                 priv->direct_ssid_len = (u8)
6985                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6986                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6987         } else
6988                 priv->one_direct_scan = 0;
6989
6990         rc = iwl3945_scan_initiate(priv);
6991
6992         IWL_DEBUG_MAC80211("leave\n");
6993
6994 out_unlock:
6995         spin_unlock_irqrestore(&priv->lock, flags);
6996         mutex_unlock(&priv->mutex);
6997
6998         return rc;
6999 }
7000
7001 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7002                            const u8 *local_addr, const u8 *addr,
7003                            struct ieee80211_key_conf *key)
7004 {
7005         struct iwl3945_priv *priv = hw->priv;
7006         int rc = 0;
7007         u8 sta_id;
7008
7009         IWL_DEBUG_MAC80211("enter\n");
7010
7011         if (!iwl3945_param_hwcrypto) {
7012                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7013                 return -EOPNOTSUPP;
7014         }
7015
7016         if (is_zero_ether_addr(addr))
7017                 /* only support pairwise keys */
7018                 return -EOPNOTSUPP;
7019
7020         sta_id = iwl3945_hw_find_station(priv, addr);
7021         if (sta_id == IWL_INVALID_STATION) {
7022                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
7023                                    addr);
7024                 return -EINVAL;
7025         }
7026
7027         mutex_lock(&priv->mutex);
7028
7029         iwl3945_scan_cancel_timeout(priv, 100);
7030
7031         switch (cmd) {
7032         case  SET_KEY:
7033                 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7034                 if (!rc) {
7035                         iwl3945_set_rxon_hwcrypto(priv, 1);
7036                         iwl3945_commit_rxon(priv);
7037                         key->hw_key_idx = sta_id;
7038                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7039                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7040                 }
7041                 break;
7042         case DISABLE_KEY:
7043                 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7044                 if (!rc) {
7045                         iwl3945_set_rxon_hwcrypto(priv, 0);
7046                         iwl3945_commit_rxon(priv);
7047                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7048                 }
7049                 break;
7050         default:
7051                 rc = -EINVAL;
7052         }
7053
7054         IWL_DEBUG_MAC80211("leave\n");
7055         mutex_unlock(&priv->mutex);
7056
7057         return rc;
7058 }
7059
7060 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
7061                            const struct ieee80211_tx_queue_params *params)
7062 {
7063         struct iwl3945_priv *priv = hw->priv;
7064         unsigned long flags;
7065         int q;
7066
7067         IWL_DEBUG_MAC80211("enter\n");
7068
7069         if (!iwl3945_is_ready_rf(priv)) {
7070                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7071                 return -EIO;
7072         }
7073
7074         if (queue >= AC_NUM) {
7075                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7076                 return 0;
7077         }
7078
7079         if (!priv->qos_data.qos_enable) {
7080                 priv->qos_data.qos_active = 0;
7081                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7082                 return 0;
7083         }
7084         q = AC_NUM - 1 - queue;
7085
7086         spin_lock_irqsave(&priv->lock, flags);
7087
7088         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7089         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7090         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7091         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7092                         cpu_to_le16((params->txop * 32));
7093
7094         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7095         priv->qos_data.qos_active = 1;
7096
7097         spin_unlock_irqrestore(&priv->lock, flags);
7098
7099         mutex_lock(&priv->mutex);
7100         if (priv->iw_mode == NL80211_IFTYPE_AP)
7101                 iwl3945_activate_qos(priv, 1);
7102         else if (priv->assoc_id && iwl3945_is_associated(priv))
7103                 iwl3945_activate_qos(priv, 0);
7104
7105         mutex_unlock(&priv->mutex);
7106
7107         IWL_DEBUG_MAC80211("leave\n");
7108         return 0;
7109 }
7110
7111 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7112                                 struct ieee80211_tx_queue_stats *stats)
7113 {
7114         struct iwl3945_priv *priv = hw->priv;
7115         int i, avail;
7116         struct iwl3945_tx_queue *txq;
7117         struct iwl3945_queue *q;
7118         unsigned long flags;
7119
7120         IWL_DEBUG_MAC80211("enter\n");
7121
7122         if (!iwl3945_is_ready_rf(priv)) {
7123                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7124                 return -EIO;
7125         }
7126
7127         spin_lock_irqsave(&priv->lock, flags);
7128
7129         for (i = 0; i < AC_NUM; i++) {
7130                 txq = &priv->txq[i];
7131                 q = &txq->q;
7132                 avail = iwl3945_queue_space(q);
7133
7134                 stats[i].len = q->n_window - avail;
7135                 stats[i].limit = q->n_window - q->high_mark;
7136                 stats[i].count = q->n_window;
7137
7138         }
7139         spin_unlock_irqrestore(&priv->lock, flags);
7140
7141         IWL_DEBUG_MAC80211("leave\n");
7142
7143         return 0;
7144 }
7145
7146 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7147                              struct ieee80211_low_level_stats *stats)
7148 {
7149         IWL_DEBUG_MAC80211("enter\n");
7150         IWL_DEBUG_MAC80211("leave\n");
7151
7152         return 0;
7153 }
7154
7155 static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
7156 {
7157         IWL_DEBUG_MAC80211("enter\n");
7158         IWL_DEBUG_MAC80211("leave\n");
7159
7160         return 0;
7161 }
7162
7163 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7164 {
7165         struct iwl3945_priv *priv = hw->priv;
7166         unsigned long flags;
7167
7168         mutex_lock(&priv->mutex);
7169         IWL_DEBUG_MAC80211("enter\n");
7170
7171         iwl3945_reset_qos(priv);
7172
7173         spin_lock_irqsave(&priv->lock, flags);
7174         priv->assoc_id = 0;
7175         priv->assoc_capability = 0;
7176         priv->call_post_assoc_from_beacon = 0;
7177
7178         /* new association get rid of ibss beacon skb */
7179         if (priv->ibss_beacon)
7180                 dev_kfree_skb(priv->ibss_beacon);
7181
7182         priv->ibss_beacon = NULL;
7183
7184         priv->beacon_int = priv->hw->conf.beacon_int;
7185         priv->timestamp1 = 0;
7186         priv->timestamp0 = 0;
7187         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
7188                 priv->beacon_int = 0;
7189
7190         spin_unlock_irqrestore(&priv->lock, flags);
7191
7192         if (!iwl3945_is_ready_rf(priv)) {
7193                 IWL_DEBUG_MAC80211("leave - not ready\n");
7194                 mutex_unlock(&priv->mutex);
7195                 return;
7196         }
7197
7198         /* we are restarting association process
7199          * clear RXON_FILTER_ASSOC_MSK bit
7200         */
7201         if (priv->iw_mode != NL80211_IFTYPE_AP) {
7202                 iwl3945_scan_cancel_timeout(priv, 100);
7203                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7204                 iwl3945_commit_rxon(priv);
7205         }
7206
7207         /* Per mac80211.h: This is only used in IBSS mode... */
7208         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7209
7210                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7211                 mutex_unlock(&priv->mutex);
7212                 return;
7213         }
7214
7215         iwl3945_set_rate(priv);
7216
7217         mutex_unlock(&priv->mutex);
7218
7219         IWL_DEBUG_MAC80211("leave\n");
7220
7221 }
7222
7223 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
7224 {
7225         struct iwl3945_priv *priv = hw->priv;
7226         unsigned long flags;
7227
7228         mutex_lock(&priv->mutex);
7229         IWL_DEBUG_MAC80211("enter\n");
7230
7231         if (!iwl3945_is_ready_rf(priv)) {
7232                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7233                 mutex_unlock(&priv->mutex);
7234                 return -EIO;
7235         }
7236
7237         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7238                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7239                 mutex_unlock(&priv->mutex);
7240                 return -EIO;
7241         }
7242
7243         spin_lock_irqsave(&priv->lock, flags);
7244
7245         if (priv->ibss_beacon)
7246                 dev_kfree_skb(priv->ibss_beacon);
7247
7248         priv->ibss_beacon = skb;
7249
7250         priv->assoc_id = 0;
7251
7252         IWL_DEBUG_MAC80211("leave\n");
7253         spin_unlock_irqrestore(&priv->lock, flags);
7254
7255         iwl3945_reset_qos(priv);
7256
7257         iwl3945_post_associate(priv);
7258
7259         mutex_unlock(&priv->mutex);
7260
7261         return 0;
7262 }
7263
7264 /*****************************************************************************
7265  *
7266  * sysfs attributes
7267  *
7268  *****************************************************************************/
7269
7270 #ifdef CONFIG_IWL3945_DEBUG
7271
7272 /*
7273  * The following adds a new attribute to the sysfs representation
7274  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7275  * used for controlling the debug level.
7276  *
7277  * See the level definitions in iwl for details.
7278  */
7279
7280 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7281 {
7282         return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7283 }
7284 static ssize_t store_debug_level(struct device_driver *d,
7285                                  const char *buf, size_t count)
7286 {
7287         char *p = (char *)buf;
7288         u32 val;
7289
7290         val = simple_strtoul(p, &p, 0);
7291         if (p == buf)
7292                 printk(KERN_INFO DRV_NAME
7293                        ": %s is not in hex or decimal form.\n", buf);
7294         else
7295                 iwl3945_debug_level = val;
7296
7297         return strnlen(buf, count);
7298 }
7299
7300 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7301                    show_debug_level, store_debug_level);
7302
7303 #endif /* CONFIG_IWL3945_DEBUG */
7304
7305 static ssize_t show_temperature(struct device *d,
7306                                 struct device_attribute *attr, char *buf)
7307 {
7308         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7309
7310         if (!iwl3945_is_alive(priv))
7311                 return -EAGAIN;
7312
7313         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7314 }
7315
7316 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7317
7318 static ssize_t show_tx_power(struct device *d,
7319                              struct device_attribute *attr, char *buf)
7320 {
7321         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7322         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7323 }
7324
7325 static ssize_t store_tx_power(struct device *d,
7326                               struct device_attribute *attr,
7327                               const char *buf, size_t count)
7328 {
7329         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7330         char *p = (char *)buf;
7331         u32 val;
7332
7333         val = simple_strtoul(p, &p, 10);
7334         if (p == buf)
7335                 printk(KERN_INFO DRV_NAME
7336                        ": %s is not in decimal form.\n", buf);
7337         else
7338                 iwl3945_hw_reg_set_txpower(priv, val);
7339
7340         return count;
7341 }
7342
7343 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7344
7345 static ssize_t show_flags(struct device *d,
7346                           struct device_attribute *attr, char *buf)
7347 {
7348         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7349
7350         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7351 }
7352
7353 static ssize_t store_flags(struct device *d,
7354                            struct device_attribute *attr,
7355                            const char *buf, size_t count)
7356 {
7357         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7358         u32 flags = simple_strtoul(buf, NULL, 0);
7359
7360         mutex_lock(&priv->mutex);
7361         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7362                 /* Cancel any currently running scans... */
7363                 if (iwl3945_scan_cancel_timeout(priv, 100))
7364                         IWL_WARNING("Could not cancel scan.\n");
7365                 else {
7366                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7367                                        flags);
7368                         priv->staging_rxon.flags = cpu_to_le32(flags);
7369                         iwl3945_commit_rxon(priv);
7370                 }
7371         }
7372         mutex_unlock(&priv->mutex);
7373
7374         return count;
7375 }
7376
7377 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7378
7379 static ssize_t show_filter_flags(struct device *d,
7380                                  struct device_attribute *attr, char *buf)
7381 {
7382         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7383
7384         return sprintf(buf, "0x%04X\n",
7385                 le32_to_cpu(priv->active_rxon.filter_flags));
7386 }
7387
7388 static ssize_t store_filter_flags(struct device *d,
7389                                   struct device_attribute *attr,
7390                                   const char *buf, size_t count)
7391 {
7392         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7393         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7394
7395         mutex_lock(&priv->mutex);
7396         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7397                 /* Cancel any currently running scans... */
7398                 if (iwl3945_scan_cancel_timeout(priv, 100))
7399                         IWL_WARNING("Could not cancel scan.\n");
7400                 else {
7401                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7402                                        "0x%04X\n", filter_flags);
7403                         priv->staging_rxon.filter_flags =
7404                                 cpu_to_le32(filter_flags);
7405                         iwl3945_commit_rxon(priv);
7406                 }
7407         }
7408         mutex_unlock(&priv->mutex);
7409
7410         return count;
7411 }
7412
7413 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7414                    store_filter_flags);
7415
7416 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7417
7418 static ssize_t show_measurement(struct device *d,
7419                                 struct device_attribute *attr, char *buf)
7420 {
7421         struct iwl3945_priv *priv = dev_get_drvdata(d);
7422         struct iwl3945_spectrum_notification measure_report;
7423         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7424         u8 *data = (u8 *)&measure_report;
7425         unsigned long flags;
7426
7427         spin_lock_irqsave(&priv->lock, flags);
7428         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7429                 spin_unlock_irqrestore(&priv->lock, flags);
7430                 return 0;
7431         }
7432         memcpy(&measure_report, &priv->measure_report, size);
7433         priv->measurement_status = 0;
7434         spin_unlock_irqrestore(&priv->lock, flags);
7435
7436         while (size && (PAGE_SIZE - len)) {
7437                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7438                                    PAGE_SIZE - len, 1);
7439                 len = strlen(buf);
7440                 if (PAGE_SIZE - len)
7441                         buf[len++] = '\n';
7442
7443                 ofs += 16;
7444                 size -= min(size, 16U);
7445         }
7446
7447         return len;
7448 }
7449
7450 static ssize_t store_measurement(struct device *d,
7451                                  struct device_attribute *attr,
7452                                  const char *buf, size_t count)
7453 {
7454         struct iwl3945_priv *priv = dev_get_drvdata(d);
7455         struct ieee80211_measurement_params params = {
7456                 .channel = le16_to_cpu(priv->active_rxon.channel),
7457                 .start_time = cpu_to_le64(priv->last_tsf),
7458                 .duration = cpu_to_le16(1),
7459         };
7460         u8 type = IWL_MEASURE_BASIC;
7461         u8 buffer[32];
7462         u8 channel;
7463
7464         if (count) {
7465                 char *p = buffer;
7466                 strncpy(buffer, buf, min(sizeof(buffer), count));
7467                 channel = simple_strtoul(p, NULL, 0);
7468                 if (channel)
7469                         params.channel = channel;
7470
7471                 p = buffer;
7472                 while (*p && *p != ' ')
7473                         p++;
7474                 if (*p)
7475                         type = simple_strtoul(p + 1, NULL, 0);
7476         }
7477
7478         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7479                        "channel %d (for '%s')\n", type, params.channel, buf);
7480         iwl3945_get_measurement(priv, &params, type);
7481
7482         return count;
7483 }
7484
7485 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7486                    show_measurement, store_measurement);
7487 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7488
7489 static ssize_t store_retry_rate(struct device *d,
7490                                 struct device_attribute *attr,
7491                                 const char *buf, size_t count)
7492 {
7493         struct iwl3945_priv *priv = dev_get_drvdata(d);
7494
7495         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7496         if (priv->retry_rate <= 0)
7497                 priv->retry_rate = 1;
7498
7499         return count;
7500 }
7501
7502 static ssize_t show_retry_rate(struct device *d,
7503                                struct device_attribute *attr, char *buf)
7504 {
7505         struct iwl3945_priv *priv = dev_get_drvdata(d);
7506         return sprintf(buf, "%d", priv->retry_rate);
7507 }
7508
7509 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7510                    store_retry_rate);
7511
7512 static ssize_t store_power_level(struct device *d,
7513                                  struct device_attribute *attr,
7514                                  const char *buf, size_t count)
7515 {
7516         struct iwl3945_priv *priv = dev_get_drvdata(d);
7517         int rc;
7518         int mode;
7519
7520         mode = simple_strtoul(buf, NULL, 0);
7521         mutex_lock(&priv->mutex);
7522
7523         if (!iwl3945_is_ready(priv)) {
7524                 rc = -EAGAIN;
7525                 goto out;
7526         }
7527
7528         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7529                 mode = IWL_POWER_AC;
7530         else
7531                 mode |= IWL_POWER_ENABLED;
7532
7533         if (mode != priv->power_mode) {
7534                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7535                 if (rc) {
7536                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7537                         goto out;
7538                 }
7539                 priv->power_mode = mode;
7540         }
7541
7542         rc = count;
7543
7544  out:
7545         mutex_unlock(&priv->mutex);
7546         return rc;
7547 }
7548
7549 #define MAX_WX_STRING 80
7550
7551 /* Values are in microsecond */
7552 static const s32 timeout_duration[] = {
7553         350000,
7554         250000,
7555         75000,
7556         37000,
7557         25000,
7558 };
7559 static const s32 period_duration[] = {
7560         400000,
7561         700000,
7562         1000000,
7563         1000000,
7564         1000000
7565 };
7566
7567 static ssize_t show_power_level(struct device *d,
7568                                 struct device_attribute *attr, char *buf)
7569 {
7570         struct iwl3945_priv *priv = dev_get_drvdata(d);
7571         int level = IWL_POWER_LEVEL(priv->power_mode);
7572         char *p = buf;
7573
7574         p += sprintf(p, "%d ", level);
7575         switch (level) {
7576         case IWL_POWER_MODE_CAM:
7577         case IWL_POWER_AC:
7578                 p += sprintf(p, "(AC)");
7579                 break;
7580         case IWL_POWER_BATTERY:
7581                 p += sprintf(p, "(BATTERY)");
7582                 break;
7583         default:
7584                 p += sprintf(p,
7585                              "(Timeout %dms, Period %dms)",
7586                              timeout_duration[level - 1] / 1000,
7587                              period_duration[level - 1] / 1000);
7588         }
7589
7590         if (!(priv->power_mode & IWL_POWER_ENABLED))
7591                 p += sprintf(p, " OFF\n");
7592         else
7593                 p += sprintf(p, " \n");
7594
7595         return p - buf + 1;
7596
7597 }
7598
7599 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7600                    store_power_level);
7601
7602 static ssize_t show_channels(struct device *d,
7603                              struct device_attribute *attr, char *buf)
7604 {
7605         /* all this shit doesn't belong into sysfs anyway */
7606         return 0;
7607 }
7608
7609 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7610
7611 static ssize_t show_statistics(struct device *d,
7612                                struct device_attribute *attr, char *buf)
7613 {
7614         struct iwl3945_priv *priv = dev_get_drvdata(d);
7615         u32 size = sizeof(struct iwl3945_notif_statistics);
7616         u32 len = 0, ofs = 0;
7617         u8 *data = (u8 *)&priv->statistics;
7618         int rc = 0;
7619
7620         if (!iwl3945_is_alive(priv))
7621                 return -EAGAIN;
7622
7623         mutex_lock(&priv->mutex);
7624         rc = iwl3945_send_statistics_request(priv);
7625         mutex_unlock(&priv->mutex);
7626
7627         if (rc) {
7628                 len = sprintf(buf,
7629                               "Error sending statistics request: 0x%08X\n", rc);
7630                 return len;
7631         }
7632
7633         while (size && (PAGE_SIZE - len)) {
7634                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7635                                    PAGE_SIZE - len, 1);
7636                 len = strlen(buf);
7637                 if (PAGE_SIZE - len)
7638                         buf[len++] = '\n';
7639
7640                 ofs += 16;
7641                 size -= min(size, 16U);
7642         }
7643
7644         return len;
7645 }
7646
7647 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7648
7649 static ssize_t show_antenna(struct device *d,
7650                             struct device_attribute *attr, char *buf)
7651 {
7652         struct iwl3945_priv *priv = dev_get_drvdata(d);
7653
7654         if (!iwl3945_is_alive(priv))
7655                 return -EAGAIN;
7656
7657         return sprintf(buf, "%d\n", priv->antenna);
7658 }
7659
7660 static ssize_t store_antenna(struct device *d,
7661                              struct device_attribute *attr,
7662                              const char *buf, size_t count)
7663 {
7664         int ant;
7665         struct iwl3945_priv *priv = dev_get_drvdata(d);
7666
7667         if (count == 0)
7668                 return 0;
7669
7670         if (sscanf(buf, "%1i", &ant) != 1) {
7671                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7672                 return count;
7673         }
7674
7675         if ((ant >= 0) && (ant <= 2)) {
7676                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7677                 priv->antenna = (enum iwl3945_antenna)ant;
7678         } else
7679                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7680
7681
7682         return count;
7683 }
7684
7685 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7686
7687 static ssize_t show_status(struct device *d,
7688                            struct device_attribute *attr, char *buf)
7689 {
7690         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7691         if (!iwl3945_is_alive(priv))
7692                 return -EAGAIN;
7693         return sprintf(buf, "0x%08x\n", (int)priv->status);
7694 }
7695
7696 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7697
7698 static ssize_t dump_error_log(struct device *d,
7699                               struct device_attribute *attr,
7700                               const char *buf, size_t count)
7701 {
7702         char *p = (char *)buf;
7703
7704         if (p[0] == '1')
7705                 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
7706
7707         return strnlen(buf, count);
7708 }
7709
7710 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7711
7712 static ssize_t dump_event_log(struct device *d,
7713                               struct device_attribute *attr,
7714                               const char *buf, size_t count)
7715 {
7716         char *p = (char *)buf;
7717
7718         if (p[0] == '1')
7719                 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
7720
7721         return strnlen(buf, count);
7722 }
7723
7724 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7725
7726 /*****************************************************************************
7727  *
7728  * driver setup and teardown
7729  *
7730  *****************************************************************************/
7731
7732 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
7733 {
7734         priv->workqueue = create_workqueue(DRV_NAME);
7735
7736         init_waitqueue_head(&priv->wait_command_queue);
7737
7738         INIT_WORK(&priv->up, iwl3945_bg_up);
7739         INIT_WORK(&priv->restart, iwl3945_bg_restart);
7740         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7741         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7742         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7743         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7744         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7745         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7746         INIT_WORK(&priv->set_monitor, iwl3945_bg_set_monitor);
7747         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7748         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7749         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7750
7751         iwl3945_hw_setup_deferred_work(priv);
7752
7753         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7754                      iwl3945_irq_tasklet, (unsigned long)priv);
7755 }
7756
7757 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
7758 {
7759         iwl3945_hw_cancel_deferred_work(priv);
7760
7761         cancel_delayed_work_sync(&priv->init_alive_start);
7762         cancel_delayed_work(&priv->scan_check);
7763         cancel_delayed_work(&priv->alive_start);
7764         cancel_work_sync(&priv->beacon_update);
7765 }
7766
7767 static struct attribute *iwl3945_sysfs_entries[] = {
7768         &dev_attr_antenna.attr,
7769         &dev_attr_channels.attr,
7770         &dev_attr_dump_errors.attr,
7771         &dev_attr_dump_events.attr,
7772         &dev_attr_flags.attr,
7773         &dev_attr_filter_flags.attr,
7774 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7775         &dev_attr_measurement.attr,
7776 #endif
7777         &dev_attr_power_level.attr,
7778         &dev_attr_retry_rate.attr,
7779         &dev_attr_statistics.attr,
7780         &dev_attr_status.attr,
7781         &dev_attr_temperature.attr,
7782         &dev_attr_tx_power.attr,
7783
7784         NULL
7785 };
7786
7787 static struct attribute_group iwl3945_attribute_group = {
7788         .name = NULL,           /* put in device directory */
7789         .attrs = iwl3945_sysfs_entries,
7790 };
7791
7792 static struct ieee80211_ops iwl3945_hw_ops = {
7793         .tx = iwl3945_mac_tx,
7794         .start = iwl3945_mac_start,
7795         .stop = iwl3945_mac_stop,
7796         .add_interface = iwl3945_mac_add_interface,
7797         .remove_interface = iwl3945_mac_remove_interface,
7798         .config = iwl3945_mac_config,
7799         .config_interface = iwl3945_mac_config_interface,
7800         .configure_filter = iwl3945_configure_filter,
7801         .set_key = iwl3945_mac_set_key,
7802         .get_stats = iwl3945_mac_get_stats,
7803         .get_tx_stats = iwl3945_mac_get_tx_stats,
7804         .conf_tx = iwl3945_mac_conf_tx,
7805         .get_tsf = iwl3945_mac_get_tsf,
7806         .reset_tsf = iwl3945_mac_reset_tsf,
7807         .bss_info_changed = iwl3945_bss_info_changed,
7808         .hw_scan = iwl3945_mac_hw_scan
7809 };
7810
7811 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7812 {
7813         int err = 0;
7814         struct iwl3945_priv *priv;
7815         struct ieee80211_hw *hw;
7816         struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
7817         unsigned long flags;
7818
7819         /* Disabling hardware scan means that mac80211 will perform scans
7820          * "the hard way", rather than using device's scan. */
7821         if (iwl3945_param_disable_hw_scan) {
7822                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7823                 iwl3945_hw_ops.hw_scan = NULL;
7824         }
7825
7826         if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
7827             (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
7828                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7829                           IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7830                 err = -EINVAL;
7831                 goto out;
7832         }
7833
7834         /* mac80211 allocates memory for this device instance, including
7835          *   space for this driver's private structure */
7836         hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
7837         if (hw == NULL) {
7838                 IWL_ERROR("Can not allocate network device\n");
7839                 err = -ENOMEM;
7840                 goto out;
7841         }
7842         SET_IEEE80211_DEV(hw, &pdev->dev);
7843
7844         hw->rate_control_algorithm = "iwl-3945-rs";
7845         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7846
7847         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7848         priv = hw->priv;
7849         priv->hw = hw;
7850
7851         priv->pci_dev = pdev;
7852         priv->cfg = cfg;
7853
7854         /* Select antenna (may be helpful if only one antenna is connected) */
7855         priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
7856 #ifdef CONFIG_IWL3945_DEBUG
7857         iwl3945_debug_level = iwl3945_param_debug;
7858         atomic_set(&priv->restrict_refcnt, 0);
7859 #endif
7860         priv->retry_rate = 1;
7861
7862         priv->ibss_beacon = NULL;
7863
7864         /* Tell mac80211 our characteristics */
7865         hw->flags = IEEE80211_HW_SIGNAL_DBM |
7866                     IEEE80211_HW_NOISE_DBM;
7867
7868         hw->wiphy->interface_modes =
7869                 BIT(NL80211_IFTYPE_AP) |
7870                 BIT(NL80211_IFTYPE_STATION) |
7871                 BIT(NL80211_IFTYPE_ADHOC);
7872
7873         /* 4 EDCA QOS priorities */
7874         hw->queues = 4;
7875
7876         spin_lock_init(&priv->lock);
7877         spin_lock_init(&priv->power_data.lock);
7878         spin_lock_init(&priv->sta_lock);
7879         spin_lock_init(&priv->hcmd_lock);
7880
7881         INIT_LIST_HEAD(&priv->free_frames);
7882
7883         mutex_init(&priv->mutex);
7884         if (pci_enable_device(pdev)) {
7885                 err = -ENODEV;
7886                 goto out_ieee80211_free_hw;
7887         }
7888
7889         pci_set_master(pdev);
7890
7891         /* Clear the driver's (not device's) station table */
7892         iwl3945_clear_stations_table(priv);
7893
7894         priv->data_retry_limit = -1;
7895         priv->ieee_channels = NULL;
7896         priv->ieee_rates = NULL;
7897         priv->band = IEEE80211_BAND_2GHZ;
7898
7899         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7900         if (!err)
7901                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7902         if (err) {
7903                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
7904                 goto out_pci_disable_device;
7905         }
7906
7907         pci_set_drvdata(pdev, priv);
7908         err = pci_request_regions(pdev, DRV_NAME);
7909         if (err)
7910                 goto out_pci_disable_device;
7911
7912         /* We disable the RETRY_TIMEOUT register (0x41) to keep
7913          * PCI Tx retries from interfering with C3 CPU state */
7914         pci_write_config_byte(pdev, 0x41, 0x00);
7915
7916         priv->hw_base = pci_iomap(pdev, 0, 0);
7917         if (!priv->hw_base) {
7918                 err = -ENODEV;
7919                 goto out_pci_release_regions;
7920         }
7921
7922         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7923                         (unsigned long long) pci_resource_len(pdev, 0));
7924         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7925
7926         /* Initialize module parameter values here */
7927
7928         /* Disable radio (SW RF KILL) via parameter when loading driver */
7929         if (iwl3945_param_disable) {
7930                 set_bit(STATUS_RF_KILL_SW, &priv->status);
7931                 IWL_DEBUG_INFO("Radio disabled.\n");
7932         }
7933
7934         priv->iw_mode = NL80211_IFTYPE_STATION;
7935
7936         printk(KERN_INFO DRV_NAME
7937                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7938
7939         /* Device-specific setup */
7940         if (iwl3945_hw_set_hw_setting(priv)) {
7941                 IWL_ERROR("failed to set hw settings\n");
7942                 goto out_iounmap;
7943         }
7944
7945         if (iwl3945_param_qos_enable)
7946                 priv->qos_data.qos_enable = 1;
7947
7948         iwl3945_reset_qos(priv);
7949
7950         priv->qos_data.qos_active = 0;
7951         priv->qos_data.qos_cap.val = 0;
7952
7953         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
7954         iwl3945_setup_deferred_work(priv);
7955         iwl3945_setup_rx_handlers(priv);
7956
7957         priv->rates_mask = IWL_RATES_MASK;
7958         /* If power management is turned on, default to AC mode */
7959         priv->power_mode = IWL_POWER_AC;
7960         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
7961
7962         spin_lock_irqsave(&priv->lock, flags);
7963         iwl3945_disable_interrupts(priv);
7964         spin_unlock_irqrestore(&priv->lock, flags);
7965
7966         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7967         if (err) {
7968                 IWL_ERROR("failed to create sysfs device attributes\n");
7969                 goto out_release_irq;
7970         }
7971
7972         /* nic init */
7973         iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7974                         CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7975
7976         iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7977         err = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
7978                                CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
7979                                CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7980         if (err < 0) {
7981                 IWL_DEBUG_INFO("Failed to init the card\n");
7982                 goto out_remove_sysfs;
7983         }
7984         /* Read the EEPROM */
7985         err = iwl3945_eeprom_init(priv);
7986         if (err) {
7987                 IWL_ERROR("Unable to init EEPROM\n");
7988                 goto out_remove_sysfs;
7989         }
7990         /* MAC Address location in EEPROM same for 3945/4965 */
7991         get_eeprom_mac(priv, priv->mac_addr);
7992         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
7993         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7994
7995         err = iwl3945_init_channel_map(priv);
7996         if (err) {
7997                 IWL_ERROR("initializing regulatory failed: %d\n", err);
7998                 goto out_remove_sysfs;
7999         }
8000
8001         err = iwl3945_init_geos(priv);
8002         if (err) {
8003                 IWL_ERROR("initializing geos failed: %d\n", err);
8004                 goto out_free_channel_map;
8005         }
8006
8007         err = ieee80211_register_hw(priv->hw);
8008         if (err) {
8009                 IWL_ERROR("Failed to register network device (error %d)\n", err);
8010                 goto out_free_geos;
8011         }
8012
8013         priv->hw->conf.beacon_int = 100;
8014         priv->mac80211_registered = 1;
8015         pci_save_state(pdev);
8016         pci_disable_device(pdev);
8017
8018         err = iwl3945_rfkill_init(priv);
8019         if (err)
8020                 IWL_ERROR("Unable to initialize RFKILL system. "
8021                                   "Ignoring error: %d\n", err);
8022
8023         return 0;
8024
8025  out_free_geos:
8026         iwl3945_free_geos(priv);
8027  out_free_channel_map:
8028         iwl3945_free_channel_map(priv);
8029  out_remove_sysfs:
8030         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8031
8032  out_release_irq:
8033         destroy_workqueue(priv->workqueue);
8034         priv->workqueue = NULL;
8035         iwl3945_unset_hw_setting(priv);
8036
8037  out_iounmap:
8038         pci_iounmap(pdev, priv->hw_base);
8039  out_pci_release_regions:
8040         pci_release_regions(pdev);
8041  out_pci_disable_device:
8042         pci_disable_device(pdev);
8043         pci_set_drvdata(pdev, NULL);
8044  out_ieee80211_free_hw:
8045         ieee80211_free_hw(priv->hw);
8046  out:
8047         return err;
8048 }
8049
8050 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
8051 {
8052         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8053         unsigned long flags;
8054
8055         if (!priv)
8056                 return;
8057
8058         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8059
8060         set_bit(STATUS_EXIT_PENDING, &priv->status);
8061
8062         iwl3945_down(priv);
8063
8064         /* make sure we flush any pending irq or
8065          * tasklet for the driver
8066          */
8067         spin_lock_irqsave(&priv->lock, flags);
8068         iwl3945_disable_interrupts(priv);
8069         spin_unlock_irqrestore(&priv->lock, flags);
8070
8071         iwl_synchronize_irq(priv);
8072
8073         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8074
8075         iwl3945_rfkill_unregister(priv);
8076         iwl3945_dealloc_ucode_pci(priv);
8077
8078         if (priv->rxq.bd)
8079                 iwl3945_rx_queue_free(priv, &priv->rxq);
8080         iwl3945_hw_txq_ctx_free(priv);
8081
8082         iwl3945_unset_hw_setting(priv);
8083         iwl3945_clear_stations_table(priv);
8084
8085         if (priv->mac80211_registered)
8086                 ieee80211_unregister_hw(priv->hw);
8087
8088         /*netif_stop_queue(dev); */
8089         flush_workqueue(priv->workqueue);
8090
8091         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8092          * priv->workqueue... so we can't take down the workqueue
8093          * until now... */
8094         destroy_workqueue(priv->workqueue);
8095         priv->workqueue = NULL;
8096
8097         pci_iounmap(pdev, priv->hw_base);
8098         pci_release_regions(pdev);
8099         pci_disable_device(pdev);
8100         pci_set_drvdata(pdev, NULL);
8101
8102         iwl3945_free_channel_map(priv);
8103         iwl3945_free_geos(priv);
8104         kfree(priv->scan);
8105         if (priv->ibss_beacon)
8106                 dev_kfree_skb(priv->ibss_beacon);
8107
8108         ieee80211_free_hw(priv->hw);
8109 }
8110
8111 #ifdef CONFIG_PM
8112
8113 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8114 {
8115         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8116
8117         if (priv->is_open) {
8118                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8119                 iwl3945_mac_stop(priv->hw);
8120                 priv->is_open = 1;
8121         }
8122
8123         pci_set_power_state(pdev, PCI_D3hot);
8124
8125         return 0;
8126 }
8127
8128 static int iwl3945_pci_resume(struct pci_dev *pdev)
8129 {
8130         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8131
8132         pci_set_power_state(pdev, PCI_D0);
8133
8134         if (priv->is_open)
8135                 iwl3945_mac_start(priv->hw);
8136
8137         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8138         return 0;
8139 }
8140
8141 #endif /* CONFIG_PM */
8142
8143 /*************** RFKILL FUNCTIONS **********/
8144 #ifdef CONFIG_IWL3945_RFKILL
8145 /* software rf-kill from user */
8146 static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
8147 {
8148         struct iwl3945_priv *priv = data;
8149         int err = 0;
8150
8151         if (!priv->rfkill)
8152         return 0;
8153
8154         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
8155                 return 0;
8156
8157         IWL_DEBUG_RF_KILL("we recieved soft RFKILL set to state %d\n", state);
8158         mutex_lock(&priv->mutex);
8159
8160         switch (state) {
8161         case RFKILL_STATE_UNBLOCKED:
8162                 if (iwl3945_is_rfkill_hw(priv)) {
8163                         err = -EBUSY;
8164                         goto out_unlock;
8165                 }
8166                 iwl3945_radio_kill_sw(priv, 0);
8167                 break;
8168         case RFKILL_STATE_SOFT_BLOCKED:
8169                 iwl3945_radio_kill_sw(priv, 1);
8170                 break;
8171         default:
8172                 IWL_WARNING("we recieved unexpected RFKILL state %d\n", state);
8173                 break;
8174         }
8175 out_unlock:
8176         mutex_unlock(&priv->mutex);
8177
8178         return err;
8179 }
8180
8181 int iwl3945_rfkill_init(struct iwl3945_priv *priv)
8182 {
8183         struct device *device = wiphy_dev(priv->hw->wiphy);
8184         int ret = 0;
8185
8186         BUG_ON(device == NULL);
8187
8188         IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
8189         priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
8190         if (!priv->rfkill) {
8191                 IWL_ERROR("Unable to allocate rfkill device.\n");
8192                 ret = -ENOMEM;
8193                 goto error;
8194         }
8195
8196         priv->rfkill->name = priv->cfg->name;
8197         priv->rfkill->data = priv;
8198         priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
8199         priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
8200         priv->rfkill->user_claim_unsupported = 1;
8201
8202         priv->rfkill->dev.class->suspend = NULL;
8203         priv->rfkill->dev.class->resume = NULL;
8204
8205         ret = rfkill_register(priv->rfkill);
8206         if (ret) {
8207                 IWL_ERROR("Unable to register rfkill: %d\n", ret);
8208                 goto freed_rfkill;
8209         }
8210
8211         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8212         return ret;
8213
8214 freed_rfkill:
8215         if (priv->rfkill != NULL)
8216                 rfkill_free(priv->rfkill);
8217         priv->rfkill = NULL;
8218
8219 error:
8220         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8221         return ret;
8222 }
8223
8224 void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
8225 {
8226         if (priv->rfkill)
8227                 rfkill_unregister(priv->rfkill);
8228
8229         priv->rfkill = NULL;
8230 }
8231
8232 /* set rf-kill to the right state. */
8233 void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
8234 {
8235
8236         if (!priv->rfkill)
8237                 return;
8238
8239         if (iwl3945_is_rfkill_hw(priv)) {
8240                 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
8241                 return;
8242         }
8243
8244         if (!iwl3945_is_rfkill_sw(priv))
8245                 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
8246         else
8247                 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
8248 }
8249 #endif
8250
8251 /*****************************************************************************
8252  *
8253  * driver and module entry point
8254  *
8255  *****************************************************************************/
8256
8257 static struct pci_driver iwl3945_driver = {
8258         .name = DRV_NAME,
8259         .id_table = iwl3945_hw_card_ids,
8260         .probe = iwl3945_pci_probe,
8261         .remove = __devexit_p(iwl3945_pci_remove),
8262 #ifdef CONFIG_PM
8263         .suspend = iwl3945_pci_suspend,
8264         .resume = iwl3945_pci_resume,
8265 #endif
8266 };
8267
8268 static int __init iwl3945_init(void)
8269 {
8270
8271         int ret;
8272         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8273         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8274
8275         ret = iwl3945_rate_control_register();
8276         if (ret) {
8277                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
8278                 return ret;
8279         }
8280
8281         ret = pci_register_driver(&iwl3945_driver);
8282         if (ret) {
8283                 IWL_ERROR("Unable to initialize PCI module\n");
8284                 goto error_register;
8285         }
8286 #ifdef CONFIG_IWL3945_DEBUG
8287         ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8288         if (ret) {
8289                 IWL_ERROR("Unable to create driver sysfs file\n");
8290                 goto error_debug;
8291         }
8292 #endif
8293
8294         return ret;
8295
8296 #ifdef CONFIG_IWL3945_DEBUG
8297 error_debug:
8298         pci_unregister_driver(&iwl3945_driver);
8299 #endif
8300 error_register:
8301         iwl3945_rate_control_unregister();
8302         return ret;
8303 }
8304
8305 static void __exit iwl3945_exit(void)
8306 {
8307 #ifdef CONFIG_IWL3945_DEBUG
8308         driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8309 #endif
8310         pci_unregister_driver(&iwl3945_driver);
8311         iwl3945_rate_control_unregister();
8312 }
8313
8314 MODULE_FIRMWARE("iwlwifi-3945" IWL3945_UCODE_API ".ucode");
8315
8316 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8317 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8318 module_param_named(disable, iwl3945_param_disable, int, 0444);
8319 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8320 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8321 MODULE_PARM_DESC(hwcrypto,
8322                  "using hardware crypto engine (default 0 [software])\n");
8323 module_param_named(debug, iwl3945_param_debug, int, 0444);
8324 MODULE_PARM_DESC(debug, "debug output mask");
8325 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8326 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8327
8328 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8329 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8330
8331 /* QoS */
8332 module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
8333 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8334
8335 module_exit(iwl3945_exit);
8336 module_init(iwl3945_init);