git.oblomov.eu Git - 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/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/ieee80211_radiotap.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 static int iwl3945_is_empty_essid(const char *essid, int essid_len)
 112 {
 113         /* Single white space is for Linksys APs */
 114         if (essid_len == 1 && essid[0] == ' ')
 115                 return 1;
 116
 117         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 118         while (essid_len) {
 119                 essid_len--;
 120                 if (essid[essid_len] != '\0')
 121                         return 0;
 122         }
 123
 124         return 1;
 125 }
 126
 127 static const char *iwl3945_escape_essid(const char *essid, u8 essid_len)
 128 {
 129         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 130         const char *s = essid;
 131         char *d = escaped;
 132
 133         if (iwl3945_is_empty_essid(essid, essid_len)) {
 134                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 135                 return escaped;
 136         }
 137
 138         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 139         while (essid_len--) {
 140                 if (*s == '\0') {
 141                         *d++ = '\\';
 142                         *d++ = '0';
 143                         s++;
 144                 } else
 145                         *d++ = *s++;
 146         }
 147         *d = '\0';
 148         return escaped;
 149 }
 150
 151 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 152  * DMA services
 153  *
 154  * Theory of operation
 155  *
 156  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 157  * of buffer descriptors, each of which points to one or more data buffers for
 158  * the device to read from or fill.  Driver and device exchange status of each
 159  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 160  * entries in each circular buffer, to protect against confusing empty and full
 161  * queue states.
 162  *
 163  * The device reads or writes the data in the queues via the device's several
 164  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 165  *
 166  * For Tx queue, there are low mark and high mark limits. If, after queuing
 167  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 168  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 169  * Tx queue resumed.
 170  *
 171  * The 3945 operates with six queues:  One receive queue, one transmit queue
 172  * (#4) for sending commands to the device firmware, and four transmit queues
 173  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 174  ***************************************************/
 175
 176 int iwl3945_queue_space(const struct iwl3945_queue *q)
 177 {
 178         int s = q->read_ptr - q->write_ptr;
 179
 180         if (q->read_ptr > q->write_ptr)
 181                 s -= q->n_bd;
 182
 183         if (s <= 0)
 184                 s += q->n_window;
 185         /* keep some reserve to not confuse empty and full situations */
 186         s -= 2;
 187         if (s < 0)
 188                 s = 0;
 189         return s;
 190 }
 191
 192 int iwl3945_x2_queue_used(const struct iwl3945_queue *q, int i)
 193 {
 194         return q->write_ptr > q->read_ptr ?
 195                 (i >= q->read_ptr && i < q->write_ptr) :
 196                 !(i < q->read_ptr && i >= q->write_ptr);
 197 }
 198
 199
 200 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
 201 {
 202         /* This is for scan command, the big buffer at end of command array */
 203         if (is_huge)
 204                 return q->n_window;     /* must be power of 2 */
 205
 206         /* Otherwise, use normal size buffers */
 207         return index & (q->n_window - 1);
 208 }
 209
 210 /**
 211  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 212  */
 213 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
 214                           int count, int slots_num, u32 id)
 215 {
 216         q->n_bd = count;
 217         q->n_window = slots_num;
 218         q->id = id;
 219
 220         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 221          * and iwl_queue_dec_wrap are broken. */
 222         BUG_ON(!is_power_of_2(count));
 223
 224         /* slots_num must be power-of-two size, otherwise
 225          * get_cmd_index is broken. */
 226         BUG_ON(!is_power_of_2(slots_num));
 227
 228         q->low_mark = q->n_window / 4;
 229         if (q->low_mark < 4)
 230                 q->low_mark = 4;
 231
 232         q->high_mark = q->n_window / 8;
 233         if (q->high_mark < 2)
 234                 q->high_mark = 2;
 235
 236         q->write_ptr = q->read_ptr = 0;
 237
 238         return 0;
 239 }
 240
 241 /**
 242  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 243  */
 244 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
 245                               struct iwl3945_tx_queue *txq, u32 id)
 246 {
 247         struct pci_dev *dev = priv->pci_dev;
 248
 249         /* Driver private data, only for Tx (not command) queues,
 250          * not shared with device. */
 251         if (id != IWL_CMD_QUEUE_NUM) {
 252                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 253                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 254                 if (!txq->txb) {
 255                         IWL_ERROR("kmalloc for auxiliary BD "
 256                                   "structures failed\n");
 257                         goto error;
 258                 }
 259         } else
 260                 txq->txb = NULL;
 261
 262         /* Circular buffer of transmit frame descriptors (TFDs),
 263          * shared with device */
 264         txq->bd = pci_alloc_consistent(dev,
 265                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 266                         &txq->q.dma_addr);
 267
 268         if (!txq->bd) {
 269                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 270                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 271                 goto error;
 272         }
 273         txq->q.id = id;
 274
 275         return 0;
 276
 277  error:
 278         if (txq->txb) {
 279                 kfree(txq->txb);
 280                 txq->txb = NULL;
 281         }
 282
 283         return -ENOMEM;
 284 }
 285
 286 /**
 287  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 288  */
 289 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
 290                       struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
 291 {
 292         struct pci_dev *dev = priv->pci_dev;
 293         int len;
 294         int rc = 0;
 295
 296         /*
 297          * Alloc buffer array for commands (Tx or other types of commands).
 298          * For the command queue (#4), allocate command space + one big
 299          * command for scan, since scan command is very huge; the system will
 300          * not have two scans at the same time, so only one is needed.
 301          * For data Tx queues (all other queues), no super-size command
 302          * space is needed.
 303          */
 304         len = sizeof(struct iwl3945_cmd) * slots_num;
 305         if (txq_id == IWL_CMD_QUEUE_NUM)
 306                 len +=  IWL_MAX_SCAN_SIZE;
 307         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 308         if (!txq->cmd)
 309                 return -ENOMEM;
 310
 311         /* Alloc driver data array and TFD circular buffer */
 312         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 313         if (rc) {
 314                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 315
 316                 return -ENOMEM;
 317         }
 318         txq->need_update = 0;
 319
 320         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 321          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 322         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 323
 324         /* Initialize queue high/low-water, head/tail indexes */
 325         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 326
 327         /* Tell device where to find queue, enable DMA channel. */
 328         iwl3945_hw_tx_queue_init(priv, txq);
 329
 330         return 0;
 331 }
 332
 333 /**
 334  * iwl3945_tx_queue_free - Deallocate DMA queue.
 335  * @txq: Transmit queue to deallocate.
 336  *
 337  * Empty queue by removing and destroying all BD's.
 338  * Free all buffers.
 339  * 0-fill, but do not free "txq" descriptor structure.
 340  */
 341 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
 342 {
 343         struct iwl3945_queue *q = &txq->q;
 344         struct pci_dev *dev = priv->pci_dev;
 345         int len;
 346
 347         if (q->n_bd == 0)
 348                 return;
 349
 350         /* first, empty all BD's */
 351         for (; q->write_ptr != q->read_ptr;
 352              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 353                 iwl3945_hw_txq_free_tfd(priv, txq);
 354
 355         len = sizeof(struct iwl3945_cmd) * q->n_window;
 356         if (q->id == IWL_CMD_QUEUE_NUM)
 357                 len += IWL_MAX_SCAN_SIZE;
 358
 359         /* De-alloc array of command/tx buffers */
 360         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 361
 362         /* De-alloc circular buffer of TFDs */
 363         if (txq->q.n_bd)
 364                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
 365                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 366
 367         /* De-alloc array of per-TFD driver data */
 368         if (txq->txb) {
 369                 kfree(txq->txb);
 370                 txq->txb = NULL;
 371         }
 372
 373         /* 0-fill queue descriptor structure */
 374         memset(txq, 0, sizeof(*txq));
 375 }
 376
 377 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 378
 379 /*************** STATION TABLE MANAGEMENT ****
 380  * mac80211 should be examined to determine if sta_info is duplicating
 381  * the functionality provided here
 382  */
 383
 384 /**************************************************************/
 385 #if 0 /* temporary disable till we add real remove station */
 386 /**
 387  * iwl3945_remove_station - Remove driver's knowledge of station.
 388  *
 389  * NOTE:  This does not remove station from device's station table.
 390  */
 391 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
 392 {
 393         int index = IWL_INVALID_STATION;
 394         int i;
 395         unsigned long flags;
 396
 397         spin_lock_irqsave(&priv->sta_lock, flags);
 398
 399         if (is_ap)
 400                 index = IWL_AP_ID;
 401         else if (is_broadcast_ether_addr(addr))
 402                 index = priv->hw_setting.bcast_sta_id;
 403         else
 404                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 405                         if (priv->stations[i].used &&
 406                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 407                                                 addr)) {
 408                                 index = i;
 409                                 break;
 410                         }
 411
 412         if (unlikely(index == IWL_INVALID_STATION))
 413                 goto out;
 414
 415         if (priv->stations[index].used) {
 416                 priv->stations[index].used = 0;
 417                 priv->num_stations--;
 418         }
 419
 420         BUG_ON(priv->num_stations < 0);
 421
 422 out:
 423         spin_unlock_irqrestore(&priv->sta_lock, flags);
 424         return 0;
 425 }
 426 #endif
 427
 428 /**
 429  * iwl3945_clear_stations_table - Clear the driver's station table
 430  *
 431  * NOTE:  This does not clear or otherwise alter the device's station table.
 432  */
 433 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
 434 {
 435         unsigned long flags;
 436
 437         spin_lock_irqsave(&priv->sta_lock, flags);
 438
 439         priv->num_stations = 0;
 440         memset(priv->stations, 0, sizeof(priv->stations));
 441
 442         spin_unlock_irqrestore(&priv->sta_lock, flags);
 443 }
 444
 445 /**
 446  * iwl3945_add_station - Add station to station tables in driver and device
 447  */
 448 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
 449 {
 450         int i;
 451         int index = IWL_INVALID_STATION;
 452         struct iwl3945_station_entry *station;
 453         unsigned long flags_spin;
 454         DECLARE_MAC_BUF(mac);
 455         u8 rate;
 456
 457         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 458         if (is_ap)
 459                 index = IWL_AP_ID;
 460         else if (is_broadcast_ether_addr(addr))
 461                 index = priv->hw_setting.bcast_sta_id;
 462         else
 463                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 464                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 465                                                 addr)) {
 466                                 index = i;
 467                                 break;
 468                         }
 469
 470                         if (!priv->stations[i].used &&
 471                             index == IWL_INVALID_STATION)
 472                                 index = i;
 473                 }
 474
 475         /* These two conditions has the same outcome but keep them separate
 476           since they have different meaning */
 477         if (unlikely(index == IWL_INVALID_STATION)) {
 478                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 479                 return index;
 480         }
 481
 482         if (priv->stations[index].used &&
 483            !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 484                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 485                 return index;
 486         }
 487
 488         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 489         station = &priv->stations[index];
 490         station->used = 1;
 491         priv->num_stations++;
 492
 493         /* Set up the REPLY_ADD_STA command to send to device */
 494         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 495         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 496         station->sta.mode = 0;
 497         station->sta.sta.sta_id = index;
 498         station->sta.station_flags = 0;
 499
 500         if (priv->band == IEEE80211_BAND_5GHZ)
 501                 rate = IWL_RATE_6M_PLCP;
 502         else
 503                 rate =  IWL_RATE_1M_PLCP;
 504
 505         /* Turn on both antennas for the station... */
 506         station->sta.rate_n_flags =
 507                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 508         station->current_rate.rate_n_flags =
 509                         le16_to_cpu(station->sta.rate_n_flags);
 510
 511         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 512
 513         /* Add station to device's station table */
 514         iwl3945_send_add_station(priv, &station->sta, flags);
 515         return index;
 516
 517 }
 518
 519 /*************** DRIVER STATUS FUNCTIONS   *****/
 520
 521 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
 522 {
 523         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 524          * set but EXIT_PENDING is not */
 525         return test_bit(STATUS_READY, &priv->status) &&
 526                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 527                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 528 }
 529
 530 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
 531 {
 532         return test_bit(STATUS_ALIVE, &priv->status);
 533 }
 534
 535 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
 536 {
 537         return test_bit(STATUS_INIT, &priv->status);
 538 }
 539
 540 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
 541 {
 542         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 543                test_bit(STATUS_RF_KILL_SW, &priv->status);
 544 }
 545
 546 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
 547 {
 548
 549         if (iwl3945_is_rfkill(priv))
 550                 return 0;
 551
 552         return iwl3945_is_ready(priv);
 553 }
 554
 555 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 556
 557 #define IWL_CMD(x) case x : return #x
 558
 559 static const char *get_cmd_string(u8 cmd)
 560 {
 561         switch (cmd) {
 562                 IWL_CMD(REPLY_ALIVE);
 563                 IWL_CMD(REPLY_ERROR);
 564                 IWL_CMD(REPLY_RXON);
 565                 IWL_CMD(REPLY_RXON_ASSOC);
 566                 IWL_CMD(REPLY_QOS_PARAM);
 567                 IWL_CMD(REPLY_RXON_TIMING);
 568                 IWL_CMD(REPLY_ADD_STA);
 569                 IWL_CMD(REPLY_REMOVE_STA);
 570                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 571                 IWL_CMD(REPLY_3945_RX);
 572                 IWL_CMD(REPLY_TX);
 573                 IWL_CMD(REPLY_RATE_SCALE);
 574                 IWL_CMD(REPLY_LEDS_CMD);
 575                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 576                 IWL_CMD(RADAR_NOTIFICATION);
 577                 IWL_CMD(REPLY_QUIET_CMD);
 578                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 579                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 580                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 581                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 582                 IWL_CMD(POWER_TABLE_CMD);
 583                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 584                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 585                 IWL_CMD(REPLY_SCAN_CMD);
 586                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 587                 IWL_CMD(SCAN_START_NOTIFICATION);
 588                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 589                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 590                 IWL_CMD(BEACON_NOTIFICATION);
 591                 IWL_CMD(REPLY_TX_BEACON);
 592                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 593                 IWL_CMD(QUIET_NOTIFICATION);
 594                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 595                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 596                 IWL_CMD(REPLY_BT_CONFIG);
 597                 IWL_CMD(REPLY_STATISTICS_CMD);
 598                 IWL_CMD(STATISTICS_NOTIFICATION);
 599                 IWL_CMD(REPLY_CARD_STATE_CMD);
 600                 IWL_CMD(CARD_STATE_NOTIFICATION);
 601                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 602         default:
 603                 return "UNKNOWN";
 604
 605         }
 606 }
 607
 608 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 609
 610 /**
 611  * iwl3945_enqueue_hcmd - enqueue a uCode command
 612  * @priv: device private data point
 613  * @cmd: a point to the ucode command structure
 614  *
 615  * The function returns < 0 values to indicate the operation is
 616  * failed. On success, it turns the index (> 0) of command in the
 617  * command queue.
 618  */
 619 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 620 {
 621         struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 622         struct iwl3945_queue *q = &txq->q;
 623         struct iwl3945_tfd_frame *tfd;
 624         u32 *control_flags;
 625         struct iwl3945_cmd *out_cmd;
 626         u32 idx;
 627         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 628         dma_addr_t phys_addr;
 629         int pad;
 630         u16 count;
 631         int ret;
 632         unsigned long flags;
 633
 634         /* If any of the command structures end up being larger than
 635          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 636          * we will need to increase the size of the TFD entries */
 637         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 638                !(cmd->meta.flags & CMD_SIZE_HUGE));
 639
 640
 641         if (iwl3945_is_rfkill(priv)) {
 642                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 643                 return -EIO;
 644         }
 645
 646         if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 647                 IWL_ERROR("No space for Tx\n");
 648                 return -ENOSPC;
 649         }
 650
 651         spin_lock_irqsave(&priv->hcmd_lock, flags);
 652
 653         tfd = &txq->bd[q->write_ptr];
 654         memset(tfd, 0, sizeof(*tfd));
 655
 656         control_flags = (u32 *) tfd;
 657
 658         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 659         out_cmd = &txq->cmd[idx];
 660
 661         out_cmd->hdr.cmd = cmd->id;
 662         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 663         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 664
 665         /* At this point, the out_cmd now has all of the incoming cmd
 666          * information */
 667
 668         out_cmd->hdr.flags = 0;
 669         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 670                         INDEX_TO_SEQ(q->write_ptr));
 671         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 672                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 673
 674         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 675                         offsetof(struct iwl3945_cmd, hdr);
 676         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 677
 678         pad = U32_PAD(cmd->len);
 679         count = TFD_CTL_COUNT_GET(*control_flags);
 680         *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
 681
 682         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 683                      "%d bytes at %d[%d]:%d\n",
 684                      get_cmd_string(out_cmd->hdr.cmd),
 685                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 686                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 687
 688         txq->need_update = 1;
 689
 690         /* Increment and update queue's write index */
 691         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 692         ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
 693
 694         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 695         return ret ? ret : idx;
 696 }
 697
 698 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 699 {
 700         int ret;
 701
 702         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 703
 704         /* An asynchronous command can not expect an SKB to be set. */
 705         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 706
 707         /* An asynchronous command MUST have a callback. */
 708         BUG_ON(!cmd->meta.u.callback);
 709
 710         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 711                 return -EBUSY;
 712
 713         ret = iwl3945_enqueue_hcmd(priv, cmd);
 714         if (ret < 0) {
 715                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 716                           get_cmd_string(cmd->id), ret);
 717                 return ret;
 718         }
 719         return 0;
 720 }
 721
 722 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 723 {
 724         int cmd_idx;
 725         int ret;
 726
 727         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 728
 729          /* A synchronous command can not have a callback set. */
 730         BUG_ON(cmd->meta.u.callback != NULL);
 731
 732         if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
 733                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 734                           get_cmd_string(cmd->id));
 735                 ret = -EBUSY;
 736                 goto out;
 737         }
 738
 739         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 740
 741         if (cmd->meta.flags & CMD_WANT_SKB)
 742                 cmd->meta.source = &cmd->meta;
 743
 744         cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
 745         if (cmd_idx < 0) {
 746                 ret = cmd_idx;
 747                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 748                           get_cmd_string(cmd->id), ret);
 749                 goto out;
 750         }
 751
 752         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 753                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 754                         HOST_COMPLETE_TIMEOUT);
 755         if (!ret) {
 756                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 757                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 758                                   get_cmd_string(cmd->id),
 759                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 760
 761                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 762                         ret = -ETIMEDOUT;
 763                         goto cancel;
 764                 }
 765         }
 766
 767         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 768                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 769                                get_cmd_string(cmd->id));
 770                 ret = -ECANCELED;
 771                 goto fail;
 772         }
 773         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 774                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 775                                get_cmd_string(cmd->id));
 776                 ret = -EIO;
 777                 goto fail;
 778         }
 779         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 780                 IWL_ERROR("Error: Response NULL in '%s'\n",
 781                           get_cmd_string(cmd->id));
 782                 ret = -EIO;
 783                 goto out;
 784         }
 785
 786         ret = 0;
 787         goto out;
 788
 789 cancel:
 790         if (cmd->meta.flags & CMD_WANT_SKB) {
 791                 struct iwl3945_cmd *qcmd;
 792
 793                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 794                  * TX cmd queue. Otherwise in case the cmd comes
 795                  * in later, it will possibly set an invalid
 796                  * address (cmd->meta.source). */
 797                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 798                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 799         }
 800 fail:
 801         if (cmd->meta.u.skb) {
 802                 dev_kfree_skb_any(cmd->meta.u.skb);
 803                 cmd->meta.u.skb = NULL;
 804         }
 805 out:
 806         clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
 807         return ret;
 808 }
 809
 810 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 811 {
 812         if (cmd->meta.flags & CMD_ASYNC)
 813                 return iwl3945_send_cmd_async(priv, cmd);
 814
 815         return iwl3945_send_cmd_sync(priv, cmd);
 816 }
 817
 818 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
 819 {
 820         struct iwl3945_host_cmd cmd = {
 821                 .id = id,
 822                 .len = len,
 823                 .data = data,
 824         };
 825
 826         return iwl3945_send_cmd_sync(priv, &cmd);
 827 }
 828
 829 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
 830 {
 831         struct iwl3945_host_cmd cmd = {
 832                 .id = id,
 833                 .len = sizeof(val),
 834                 .data = &val,
 835         };
 836
 837         return iwl3945_send_cmd_sync(priv, &cmd);
 838 }
 839
 840 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
 841 {
 842         return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 843 }
 844
 845 /**
 846  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 847  * @band: 2.4 or 5 GHz band
 848  * @channel: Any channel valid for the requested band
 849
 850  * In addition to setting the staging RXON, priv->band is also set.
 851  *
 852  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 853  * in the staging RXON flag structure based on the band
 854  */
 855 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
 856                                     enum ieee80211_band band,
 857                                     u16 channel)
 858 {
 859         if (!iwl3945_get_channel_info(priv, band, channel)) {
 860                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 861                                channel, band);
 862                 return -EINVAL;
 863         }
 864
 865         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 866             (priv->band == band))
 867                 return 0;
 868
 869         priv->staging_rxon.channel = cpu_to_le16(channel);
 870         if (band == IEEE80211_BAND_5GHZ)
 871                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 872         else
 873                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 874
 875         priv->band = band;
 876
 877         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 878
 879         return 0;
 880 }
 881
 882 /**
 883  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 884  *
 885  * NOTE:  This is really only useful during development and can eventually
 886  * be #ifdef'd out once the driver is stable and folks aren't actively
 887  * making changes
 888  */
 889 static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
 890 {
 891         int error = 0;
 892         int counter = 1;
 893
 894         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 895                 error |= le32_to_cpu(rxon->flags &
 896                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 897                                  RXON_FLG_RADAR_DETECT_MSK));
 898                 if (error)
 899                         IWL_WARNING("check 24G fields %d | %d\n",
 900                                     counter++, error);
 901         } else {
 902                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 903                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 904                 if (error)
 905                         IWL_WARNING("check 52 fields %d | %d\n",
 906                                     counter++, error);
 907                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 908                 if (error)
 909                         IWL_WARNING("check 52 CCK %d | %d\n",
 910                                     counter++, error);
 911         }
 912         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 913         if (error)
 914                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 915
 916         /* make sure basic rates 6Mbps and 1Mbps are supported */
 917         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 918                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 919         if (error)
 920                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 921
 922         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 923         if (error)
 924                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 925
 926         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 927                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 928         if (error)
 929                 IWL_WARNING("check CCK and short slot %d | %d\n",
 930                             counter++, error);
 931
 932         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 933                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 934         if (error)
 935                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 936                             counter++, error);
 937
 938         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 939                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 940         if (error)
 941                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 942                             counter++, error);
 943
 944         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 945                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 946                                 RXON_FLG_ANT_A_MSK)) == 0);
 947         if (error)
 948                 IWL_WARNING("check antenna %d %d\n", counter++, error);
 949
 950         if (error)
 951                 IWL_WARNING("Tuning to channel %d\n",
 952                             le16_to_cpu(rxon->channel));
 953
 954         if (error) {
 955                 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
 956                 return -1;
 957         }
 958         return 0;
 959 }
 960
 961 /**
 962  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 963  * @priv: staging_rxon is compared to active_rxon
 964  *
 965  * If the RXON structure is changing enough to require a new tune,
 966  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 967  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 968  */
 969 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
 970 {
 971
 972         /* These items are only settable from the full RXON command */
 973         if (!(iwl3945_is_associated(priv)) ||
 974             compare_ether_addr(priv->staging_rxon.bssid_addr,
 975                                priv->active_rxon.bssid_addr) ||
 976             compare_ether_addr(priv->staging_rxon.node_addr,
 977                                priv->active_rxon.node_addr) ||
 978             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 979                                priv->active_rxon.wlap_bssid_addr) ||
 980             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 981             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 982             (priv->staging_rxon.air_propagation !=
 983              priv->active_rxon.air_propagation) ||
 984             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 985                 return 1;
 986
 987         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 988          * be updated with the RXON_ASSOC command -- however only some
 989          * flag transitions are allowed using RXON_ASSOC */
 990
 991         /* Check if we are not switching bands */
 992         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 993             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 994                 return 1;
 995
 996         /* Check if we are switching association toggle */
 997         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 998                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 999                 return 1;
1000
1001         return 0;
1002 }
1003
1004 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
1005 {
1006         int rc = 0;
1007         struct iwl3945_rx_packet *res = NULL;
1008         struct iwl3945_rxon_assoc_cmd rxon_assoc;
1009         struct iwl3945_host_cmd cmd = {
1010                 .id = REPLY_RXON_ASSOC,
1011                 .len = sizeof(rxon_assoc),
1012                 .meta.flags = CMD_WANT_SKB,
1013                 .data = &rxon_assoc,
1014         };
1015         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
1016         const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
1017
1018         if ((rxon1->flags == rxon2->flags) &&
1019             (rxon1->filter_flags == rxon2->filter_flags) &&
1020             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1021             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1022                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1023                 return 0;
1024         }
1025
1026         rxon_assoc.flags = priv->staging_rxon.flags;
1027         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1028         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1029         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1030         rxon_assoc.reserved = 0;
1031
1032         rc = iwl3945_send_cmd_sync(priv, &cmd);
1033         if (rc)
1034                 return rc;
1035
1036         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1037         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1038                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1039                 rc = -EIO;
1040         }
1041
1042         priv->alloc_rxb_skb--;
1043         dev_kfree_skb_any(cmd.meta.u.skb);
1044
1045         return rc;
1046 }
1047
1048 /**
1049  * iwl3945_commit_rxon - commit staging_rxon to hardware
1050  *
1051  * The RXON command in staging_rxon is committed to the hardware and
1052  * the active_rxon structure is updated with the new data.  This
1053  * function correctly transitions out of the RXON_ASSOC_MSK state if
1054  * a HW tune is required based on the RXON structure changes.
1055  */
1056 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1057 {
1058         /* cast away the const for active_rxon in this function */
1059         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1060         int rc = 0;
1061         DECLARE_MAC_BUF(mac);
1062
1063         if (!iwl3945_is_alive(priv))
1064                 return -1;
1065
1066         /* always get timestamp with Rx frame */
1067         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1068
1069         /* select antenna */
1070         priv->staging_rxon.flags &=
1071             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1072         priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1073
1074         rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
1075         if (rc) {
1076                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1077                 return -EINVAL;
1078         }
1079
1080         /* If we don't need to send a full RXON, we can use
1081          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1082          * and other flags for the current radio configuration. */
1083         if (!iwl3945_full_rxon_required(priv)) {
1084                 rc = iwl3945_send_rxon_assoc(priv);
1085                 if (rc) {
1086                         IWL_ERROR("Error setting RXON_ASSOC "
1087                                   "configuration (%d).\n", rc);
1088                         return rc;
1089                 }
1090
1091                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1092
1093                 return 0;
1094         }
1095
1096         /* If we are currently associated and the new config requires
1097          * an RXON_ASSOC and the new config wants the associated mask enabled,
1098          * we must clear the associated from the active configuration
1099          * before we apply the new config */
1100         if (iwl3945_is_associated(priv) &&
1101             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1102                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1103                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1104
1105                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1106                                       sizeof(struct iwl3945_rxon_cmd),
1107                                       &priv->active_rxon);
1108
1109                 /* If the mask clearing failed then we set
1110                  * active_rxon back to what it was previously */
1111                 if (rc) {
1112                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1113                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1114                                   "configuration (%d).\n", rc);
1115                         return rc;
1116                 }
1117         }
1118
1119         IWL_DEBUG_INFO("Sending RXON\n"
1120                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1121                        "* channel = %d\n"
1122                        "* bssid = %s\n",
1123                        ((priv->staging_rxon.filter_flags &
1124                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1125                        le16_to_cpu(priv->staging_rxon.channel),
1126                        print_mac(mac, priv->staging_rxon.bssid_addr));
1127
1128         /* Apply the new configuration */
1129         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1130                               sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1131         if (rc) {
1132                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1133                 return rc;
1134         }
1135
1136         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1137
1138         iwl3945_clear_stations_table(priv);
1139
1140         /* If we issue a new RXON command which required a tune then we must
1141          * send a new TXPOWER command or we won't be able to Tx any frames */
1142         rc = iwl3945_hw_reg_send_txpower(priv);
1143         if (rc) {
1144                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1145                 return rc;
1146         }
1147
1148         /* Add the broadcast address so we can send broadcast frames */
1149         if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1150             IWL_INVALID_STATION) {
1151                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1152                 return -EIO;
1153         }
1154
1155         /* If we have set the ASSOC_MSK and we are in BSS mode then
1156          * add the IWL_AP_ID to the station rate table */
1157         if (iwl3945_is_associated(priv) &&
1158             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
1159                 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1160                     == IWL_INVALID_STATION) {
1161                         IWL_ERROR("Error adding AP address for transmit.\n");
1162                         return -EIO;
1163                 }
1164
1165         /* Init the hardware's rate fallback order based on the band */
1166         rc = iwl3945_init_hw_rate_table(priv);
1167         if (rc) {
1168                 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1169                 return -EIO;
1170         }
1171
1172         return 0;
1173 }
1174
1175 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1176 {
1177         struct iwl3945_bt_cmd bt_cmd = {
1178                 .flags = 3,
1179                 .lead_time = 0xAA,
1180                 .max_kill = 1,
1181                 .kill_ack_mask = 0,
1182                 .kill_cts_mask = 0,
1183         };
1184
1185         return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1186                                 sizeof(struct iwl3945_bt_cmd), &bt_cmd);
1187 }
1188
1189 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1190 {
1191         int rc = 0;
1192         struct iwl3945_rx_packet *res;
1193         struct iwl3945_host_cmd cmd = {
1194                 .id = REPLY_SCAN_ABORT_CMD,
1195                 .meta.flags = CMD_WANT_SKB,
1196         };
1197
1198         /* If there isn't a scan actively going on in the hardware
1199          * then we are in between scan bands and not actually
1200          * actively scanning, so don't send the abort command */
1201         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1202                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1203                 return 0;
1204         }
1205
1206         rc = iwl3945_send_cmd_sync(priv, &cmd);
1207         if (rc) {
1208                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1209                 return rc;
1210         }
1211
1212         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1213         if (res->u.status != CAN_ABORT_STATUS) {
1214                 /* The scan abort will return 1 for success or
1215                  * 2 for "failure".  A failure condition can be
1216                  * due to simply not being in an active scan which
1217                  * can occur if we send the scan abort before we
1218                  * the microcode has notified us that a scan is
1219                  * completed. */
1220                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1221                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1222                 clear_bit(STATUS_SCAN_HW, &priv->status);
1223         }
1224
1225         dev_kfree_skb_any(cmd.meta.u.skb);
1226
1227         return rc;
1228 }
1229
1230 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1231                                         struct iwl3945_cmd *cmd,
1232                                         struct sk_buff *skb)
1233 {
1234         return 1;
1235 }
1236
1237 /*
1238  * CARD_STATE_CMD
1239  *
1240  * Use: Sets the device's internal card state to enable, disable, or halt
1241  *
1242  * When in the 'enable' state the card operates as normal.
1243  * When in the 'disable' state, the card enters into a low power mode.
1244  * When in the 'halt' state, the card is shut down and must be fully
1245  * restarted to come back on.
1246  */
1247 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1248 {
1249         struct iwl3945_host_cmd cmd = {
1250                 .id = REPLY_CARD_STATE_CMD,
1251                 .len = sizeof(u32),
1252                 .data = &flags,
1253                 .meta.flags = meta_flag,
1254         };
1255
1256         if (meta_flag & CMD_ASYNC)
1257                 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1258
1259         return iwl3945_send_cmd(priv, &cmd);
1260 }
1261
1262 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1263                                      struct iwl3945_cmd *cmd, struct sk_buff *skb)
1264 {
1265         struct iwl3945_rx_packet *res = NULL;
1266
1267         if (!skb) {
1268                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1269                 return 1;
1270         }
1271
1272         res = (struct iwl3945_rx_packet *)skb->data;
1273         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1274                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1275                           res->hdr.flags);
1276                 return 1;
1277         }
1278
1279         switch (res->u.add_sta.status) {
1280         case ADD_STA_SUCCESS_MSK:
1281                 break;
1282         default:
1283                 break;
1284         }
1285
1286         /* We didn't cache the SKB; let the caller free it */
1287         return 1;
1288 }
1289
1290 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1291                          struct iwl3945_addsta_cmd *sta, u8 flags)
1292 {
1293         struct iwl3945_rx_packet *res = NULL;
1294         int rc = 0;
1295         struct iwl3945_host_cmd cmd = {
1296                 .id = REPLY_ADD_STA,
1297                 .len = sizeof(struct iwl3945_addsta_cmd),
1298                 .meta.flags = flags,
1299                 .data = sta,
1300         };
1301
1302         if (flags & CMD_ASYNC)
1303                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1304         else
1305                 cmd.meta.flags |= CMD_WANT_SKB;
1306
1307         rc = iwl3945_send_cmd(priv, &cmd);
1308
1309         if (rc || (flags & CMD_ASYNC))
1310                 return rc;
1311
1312         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1313         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1314                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1315                           res->hdr.flags);
1316                 rc = -EIO;
1317         }
1318
1319         if (rc == 0) {
1320                 switch (res->u.add_sta.status) {
1321                 case ADD_STA_SUCCESS_MSK:
1322                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1323                         break;
1324                 default:
1325                         rc = -EIO;
1326                         IWL_WARNING("REPLY_ADD_STA failed\n");
1327                         break;
1328                 }
1329         }
1330
1331         priv->alloc_rxb_skb--;
1332         dev_kfree_skb_any(cmd.meta.u.skb);
1333
1334         return rc;
1335 }
1336
1337 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1338                                    struct ieee80211_key_conf *keyconf,
1339                                    u8 sta_id)
1340 {
1341         unsigned long flags;
1342         __le16 key_flags = 0;
1343
1344         switch (keyconf->alg) {
1345         case ALG_CCMP:
1346                 key_flags |= STA_KEY_FLG_CCMP;
1347                 key_flags |= cpu_to_le16(
1348                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1349                 key_flags &= ~STA_KEY_FLG_INVALID;
1350                 break;
1351         case ALG_TKIP:
1352         case ALG_WEP:
1353         default:
1354                 return -EINVAL;
1355         }
1356         spin_lock_irqsave(&priv->sta_lock, flags);
1357         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1358         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1359         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1360                keyconf->keylen);
1361
1362         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1363                keyconf->keylen);
1364         priv->stations[sta_id].sta.key.key_flags = key_flags;
1365         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1366         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1367
1368         spin_unlock_irqrestore(&priv->sta_lock, flags);
1369
1370         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1371         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1372         return 0;
1373 }
1374
1375 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1376 {
1377         unsigned long flags;
1378
1379         spin_lock_irqsave(&priv->sta_lock, flags);
1380         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1381         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
1382         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1383         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1384         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1385         spin_unlock_irqrestore(&priv->sta_lock, flags);
1386
1387         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1388         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1389         return 0;
1390 }
1391
1392 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1393 {
1394         struct list_head *element;
1395
1396         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1397                        priv->frames_count);
1398
1399         while (!list_empty(&priv->free_frames)) {
1400                 element = priv->free_frames.next;
1401                 list_del(element);
1402                 kfree(list_entry(element, struct iwl3945_frame, list));
1403                 priv->frames_count--;
1404         }
1405
1406         if (priv->frames_count) {
1407                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1408                             priv->frames_count);
1409                 priv->frames_count = 0;
1410         }
1411 }
1412
1413 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1414 {
1415         struct iwl3945_frame *frame;
1416         struct list_head *element;
1417         if (list_empty(&priv->free_frames)) {
1418                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1419                 if (!frame) {
1420                         IWL_ERROR("Could not allocate frame!\n");
1421                         return NULL;
1422                 }
1423
1424                 priv->frames_count++;
1425                 return frame;
1426         }
1427
1428         element = priv->free_frames.next;
1429         list_del(element);
1430         return list_entry(element, struct iwl3945_frame, list);
1431 }
1432
1433 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1434 {
1435         memset(frame, 0, sizeof(*frame));
1436         list_add(&frame->list, &priv->free_frames);
1437 }
1438
1439 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1440                                 struct ieee80211_hdr *hdr,
1441                                 const u8 *dest, int left)
1442 {
1443
1444         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1445             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1446              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1447                 return 0;
1448
1449         if (priv->ibss_beacon->len > left)
1450                 return 0;
1451
1452         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1453
1454         return priv->ibss_beacon->len;
1455 }
1456
1457 static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
1458 {
1459         u8 i;
1460
1461         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1462              i = iwl3945_rates[i].next_ieee) {
1463                 if (rate_mask & (1 << i))
1464                         return iwl3945_rates[i].plcp;
1465         }
1466
1467         return IWL_RATE_INVALID;
1468 }
1469
1470 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1471 {
1472         struct iwl3945_frame *frame;
1473         unsigned int frame_size;
1474         int rc;
1475         u8 rate;
1476
1477         frame = iwl3945_get_free_frame(priv);
1478
1479         if (!frame) {
1480                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1481                           "command.\n");
1482                 return -ENOMEM;
1483         }
1484
1485         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1486                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
1487                                                 0xFF0);
1488                 if (rate == IWL_INVALID_RATE)
1489                         rate = IWL_RATE_6M_PLCP;
1490         } else {
1491                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1492                 if (rate == IWL_INVALID_RATE)
1493                         rate = IWL_RATE_1M_PLCP;
1494         }
1495
1496         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1497
1498         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1499                               &frame->u.cmd[0]);
1500
1501         iwl3945_free_frame(priv, frame);
1502
1503         return rc;
1504 }
1505
1506 /******************************************************************************
1507  *
1508  * EEPROM related functions
1509  *
1510  ******************************************************************************/
1511
1512 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1513 {
1514         memcpy(mac, priv->eeprom.mac_address, 6);
1515 }
1516
1517 /*
1518  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1519  * embedded controller) as EEPROM reader; each read is a series of pulses
1520  * to/from the EEPROM chip, not a single event, so even reads could conflict
1521  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1522  * simply claims ownership, which should be safe when this function is called
1523  * (i.e. before loading uCode!).
1524  */
1525 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1526 {
1527         _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1528         return 0;
1529 }
1530
1531 /**
1532  * iwl3945_eeprom_init - read EEPROM contents
1533  *
1534  * Load the EEPROM contents from adapter into priv->eeprom
1535  *
1536  * NOTE:  This routine uses the non-debug IO access functions.
1537  */
1538 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1539 {
1540         u16 *e = (u16 *)&priv->eeprom;
1541         u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1542         u32 r;
1543         int sz = sizeof(priv->eeprom);
1544         int rc;
1545         int i;
1546         u16 addr;
1547
1548         /* The EEPROM structure has several padding buffers within it
1549          * and when adding new EEPROM maps is subject to programmer errors
1550          * which may be very difficult to identify without explicitly
1551          * checking the resulting size of the eeprom map. */
1552         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1553
1554         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1555                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1556                 return -ENOENT;
1557         }
1558
1559         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1560         rc = iwl3945_eeprom_acquire_semaphore(priv);
1561         if (rc < 0) {
1562                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1563                 return -ENOENT;
1564         }
1565
1566         /* eeprom is an array of 16bit values */
1567         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1568                 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1569                 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1570
1571                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1572                                         i += IWL_EEPROM_ACCESS_DELAY) {
1573                         r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1574                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1575                                 break;
1576                         udelay(IWL_EEPROM_ACCESS_DELAY);
1577                 }
1578
1579                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1580                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1581                         return -ETIMEDOUT;
1582                 }
1583                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1584         }
1585
1586         return 0;
1587 }
1588
1589 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1590 {
1591         if (priv->hw_setting.shared_virt)
1592                 pci_free_consistent(priv->pci_dev,
1593                                     sizeof(struct iwl3945_shared),
1594                                     priv->hw_setting.shared_virt,
1595                                     priv->hw_setting.shared_phys);
1596 }
1597
1598 /**
1599  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1600  *
1601  * return : set the bit for each supported rate insert in ie
1602  */
1603 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1604                                     u16 basic_rate, int *left)
1605 {
1606         u16 ret_rates = 0, bit;
1607         int i;
1608         u8 *cnt = ie;
1609         u8 *rates = ie + 1;
1610
1611         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1612                 if (bit & supported_rate) {
1613                         ret_rates |= bit;
1614                         rates[*cnt] = iwl3945_rates[i].ieee |
1615                                 ((bit & basic_rate) ? 0x80 : 0x00);
1616                         (*cnt)++;
1617                         (*left)--;
1618                         if ((*left <= 0) ||
1619                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1620                                 break;
1621                 }
1622         }
1623
1624         return ret_rates;
1625 }
1626
1627 /**
1628  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1629  */
1630 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1631                               struct ieee80211_mgmt *frame,
1632                               int left, int is_direct)
1633 {
1634         int len = 0;
1635         u8 *pos = NULL;
1636         u16 active_rates, ret_rates, cck_rates;
1637
1638         /* Make sure there is enough space for the probe request,
1639          * two mandatory IEs and the data */
1640         left -= 24;
1641         if (left < 0)
1642                 return 0;
1643         len += 24;
1644
1645         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1646         memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1647         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1648         memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1649         frame->seq_ctrl = 0;
1650
1651         /* fill in our indirect SSID IE */
1652         /* ...next IE... */
1653
1654         left -= 2;
1655         if (left < 0)
1656                 return 0;
1657         len += 2;
1658         pos = &(frame->u.probe_req.variable[0]);
1659         *pos++ = WLAN_EID_SSID;
1660         *pos++ = 0;
1661
1662         /* fill in our direct SSID IE... */
1663         if (is_direct) {
1664                 /* ...next IE... */
1665                 left -= 2 + priv->essid_len;
1666                 if (left < 0)
1667                         return 0;
1668                 /* ... fill it in... */
1669                 *pos++ = WLAN_EID_SSID;
1670                 *pos++ = priv->essid_len;
1671                 memcpy(pos, priv->essid, priv->essid_len);
1672                 pos += priv->essid_len;
1673                 len += 2 + priv->essid_len;
1674         }
1675
1676         /* fill in supported rate */
1677         /* ...next IE... */
1678         left -= 2;
1679         if (left < 0)
1680                 return 0;
1681
1682         /* ... fill it in... */
1683         *pos++ = WLAN_EID_SUPP_RATES;
1684         *pos = 0;
1685
1686         priv->active_rate = priv->rates_mask;
1687         active_rates = priv->active_rate;
1688         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1689
1690         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1691         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1692                         priv->active_rate_basic, &left);
1693         active_rates &= ~ret_rates;
1694
1695         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1696                                  priv->active_rate_basic, &left);
1697         active_rates &= ~ret_rates;
1698
1699         len += 2 + *pos;
1700         pos += (*pos) + 1;
1701         if (active_rates == 0)
1702                 goto fill_end;
1703
1704         /* fill in supported extended rate */
1705         /* ...next IE... */
1706         left -= 2;
1707         if (left < 0)
1708                 return 0;
1709         /* ... fill it in... */
1710         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1711         *pos = 0;
1712         iwl3945_supported_rate_to_ie(pos, active_rates,
1713                                  priv->active_rate_basic, &left);
1714         if (*pos > 0)
1715                 len += 2 + *pos;
1716
1717  fill_end:
1718         return (u16)len;
1719 }
1720
1721 /*
1722  * QoS  support
1723 */
1724 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1725                                        struct iwl3945_qosparam_cmd *qos)
1726 {
1727
1728         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1729                                 sizeof(struct iwl3945_qosparam_cmd), qos);
1730 }
1731
1732 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1733 {
1734         u16 cw_min = 15;
1735         u16 cw_max = 1023;
1736         u8 aifs = 2;
1737         u8 is_legacy = 0;
1738         unsigned long flags;
1739         int i;
1740
1741         spin_lock_irqsave(&priv->lock, flags);
1742         priv->qos_data.qos_active = 0;
1743
1744         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1745                 if (priv->qos_data.qos_enable)
1746                         priv->qos_data.qos_active = 1;
1747                 if (!(priv->active_rate & 0xfff0)) {
1748                         cw_min = 31;
1749                         is_legacy = 1;
1750                 }
1751         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1752                 if (priv->qos_data.qos_enable)
1753                         priv->qos_data.qos_active = 1;
1754         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1755                 cw_min = 31;
1756                 is_legacy = 1;
1757         }
1758
1759         if (priv->qos_data.qos_active)
1760                 aifs = 3;
1761
1762         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1763         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1764         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1765         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1766         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1767
1768         if (priv->qos_data.qos_active) {
1769                 i = 1;
1770                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1771                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1772                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1773                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1774                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1775
1776                 i = 2;
1777                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1778                         cpu_to_le16((cw_min + 1) / 2 - 1);
1779                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1780                         cpu_to_le16(cw_max);
1781                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1782                 if (is_legacy)
1783                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1784                                 cpu_to_le16(6016);
1785                 else
1786                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1787                                 cpu_to_le16(3008);
1788                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1789
1790                 i = 3;
1791                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1792                         cpu_to_le16((cw_min + 1) / 4 - 1);
1793                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1794                         cpu_to_le16((cw_max + 1) / 2 - 1);
1795                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1796                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1797                 if (is_legacy)
1798                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1799                                 cpu_to_le16(3264);
1800                 else
1801                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1802                                 cpu_to_le16(1504);
1803         } else {
1804                 for (i = 1; i < 4; i++) {
1805                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1806                                 cpu_to_le16(cw_min);
1807                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1808                                 cpu_to_le16(cw_max);
1809                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1810                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1811                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1812                 }
1813         }
1814         IWL_DEBUG_QOS("set QoS to default \n");
1815
1816         spin_unlock_irqrestore(&priv->lock, flags);
1817 }
1818
1819 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
1820 {
1821         unsigned long flags;
1822
1823         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1824                 return;
1825
1826         if (!priv->qos_data.qos_enable)
1827                 return;
1828
1829         spin_lock_irqsave(&priv->lock, flags);
1830         priv->qos_data.def_qos_parm.qos_flags = 0;
1831
1832         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1833             !priv->qos_data.qos_cap.q_AP.txop_request)
1834                 priv->qos_data.def_qos_parm.qos_flags |=
1835                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1836
1837         if (priv->qos_data.qos_active)
1838                 priv->qos_data.def_qos_parm.qos_flags |=
1839                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1840
1841         spin_unlock_irqrestore(&priv->lock, flags);
1842
1843         if (force || iwl3945_is_associated(priv)) {
1844                 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
1845                               priv->qos_data.qos_active);
1846
1847                 iwl3945_send_qos_params_command(priv,
1848                                 &(priv->qos_data.def_qos_parm));
1849         }
1850 }
1851
1852 /*
1853  * Power management (not Tx power!) functions
1854  */
1855 #define MSEC_TO_USEC 1024
1856
1857 #define NOSLP __constant_cpu_to_le32(0)
1858 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
1859 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1860 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1861                                      __constant_cpu_to_le32(X1), \
1862                                      __constant_cpu_to_le32(X2), \
1863                                      __constant_cpu_to_le32(X3), \
1864                                      __constant_cpu_to_le32(X4)}
1865
1866
1867 /* default power management (not Tx power) table values */
1868 /* for tim  0-10 */
1869 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
1870         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1871         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1872         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1873         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1874         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1875         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1876 };
1877
1878 /* for tim > 10 */
1879 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
1880         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1881         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1882                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1883         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1884                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1885         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1886                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1887         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1888         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1889                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1890 };
1891
1892 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
1893 {
1894         int rc = 0, i;
1895         struct iwl3945_power_mgr *pow_data;
1896         int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
1897         u16 pci_pm;
1898
1899         IWL_DEBUG_POWER("Initialize power \n");
1900
1901         pow_data = &(priv->power_data);
1902
1903         memset(pow_data, 0, sizeof(*pow_data));
1904
1905         pow_data->active_index = IWL_POWER_RANGE_0;
1906         pow_data->dtim_val = 0xffff;
1907
1908         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1909         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1910
1911         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1912         if (rc != 0)
1913                 return 0;
1914         else {
1915                 struct iwl3945_powertable_cmd *cmd;
1916
1917                 IWL_DEBUG_POWER("adjust power command flags\n");
1918
1919                 for (i = 0; i < IWL_POWER_AC; i++) {
1920                         cmd = &pow_data->pwr_range_0[i].cmd;
1921
1922                         if (pci_pm & 0x1)
1923                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1924                         else
1925                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1926                 }
1927         }
1928         return rc;
1929 }
1930
1931 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1932                                 struct iwl3945_powertable_cmd *cmd, u32 mode)
1933 {
1934         int rc = 0, i;
1935         u8 skip;
1936         u32 max_sleep = 0;
1937         struct iwl3945_power_vec_entry *range;
1938         u8 period = 0;
1939         struct iwl3945_power_mgr *pow_data;
1940
1941         if (mode > IWL_POWER_INDEX_5) {
1942                 IWL_DEBUG_POWER("Error invalid power mode \n");
1943                 return -1;
1944         }
1945         pow_data = &(priv->power_data);
1946
1947         if (pow_data->active_index == IWL_POWER_RANGE_0)
1948                 range = &pow_data->pwr_range_0[0];
1949         else
1950                 range = &pow_data->pwr_range_1[1];
1951
1952         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1953
1954 #ifdef IWL_MAC80211_DISABLE
1955         if (priv->assoc_network != NULL) {
1956                 unsigned long flags;
1957
1958                 period = priv->assoc_network->tim.tim_period;
1959         }
1960 #endif  /*IWL_MAC80211_DISABLE */
1961         skip = range[mode].no_dtim;
1962
1963         if (period == 0) {
1964                 period = 1;
1965                 skip = 0;
1966         }
1967
1968         if (skip == 0) {
1969                 max_sleep = period;
1970                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1971         } else {
1972                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1973                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1974                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1975         }
1976
1977         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1978                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1979                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1980         }
1981
1982         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1983         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1984         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1985         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1986                         le32_to_cpu(cmd->sleep_interval[0]),
1987                         le32_to_cpu(cmd->sleep_interval[1]),
1988                         le32_to_cpu(cmd->sleep_interval[2]),
1989                         le32_to_cpu(cmd->sleep_interval[3]),
1990                         le32_to_cpu(cmd->sleep_interval[4]));
1991
1992         return rc;
1993 }
1994
1995 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
1996 {
1997         u32 uninitialized_var(final_mode);
1998         int rc;
1999         struct iwl3945_powertable_cmd cmd;
2000
2001         /* If on battery, set to 3,
2002          * if plugged into AC power, set to CAM ("continuously aware mode"),
2003          * else user level */
2004         switch (mode) {
2005         case IWL_POWER_BATTERY:
2006                 final_mode = IWL_POWER_INDEX_3;
2007                 break;
2008         case IWL_POWER_AC:
2009                 final_mode = IWL_POWER_MODE_CAM;
2010                 break;
2011         default:
2012                 final_mode = mode;
2013                 break;
2014         }
2015
2016         iwl3945_update_power_cmd(priv, &cmd, final_mode);
2017
2018         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2019
2020         if (final_mode == IWL_POWER_MODE_CAM)
2021                 clear_bit(STATUS_POWER_PMI, &priv->status);
2022         else
2023                 set_bit(STATUS_POWER_PMI, &priv->status);
2024
2025         return rc;
2026 }
2027
2028 int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2029 {
2030         /* Filter incoming packets to determine if they are targeted toward
2031          * this network, discarding packets coming from ourselves */
2032         switch (priv->iw_mode) {
2033         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2034                 /* packets from our adapter are dropped (echo) */
2035                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2036                         return 0;
2037                 /* {broad,multi}cast packets to our IBSS go through */
2038                 if (is_multicast_ether_addr(header->addr1))
2039                         return !compare_ether_addr(header->addr3, priv->bssid);
2040                 /* packets to our adapter go through */
2041                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2042         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2043                 /* packets from our adapter are dropped (echo) */
2044                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2045                         return 0;
2046                 /* {broad,multi}cast packets to our BSS go through */
2047                 if (is_multicast_ether_addr(header->addr1))
2048                         return !compare_ether_addr(header->addr2, priv->bssid);
2049                 /* packets to our adapter go through */
2050                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2051         default:
2052                 return 1;
2053         }
2054
2055         return 1;
2056 }
2057
2058 /**
2059  * iwl3945_scan_cancel - Cancel any currently executing HW scan
2060  *
2061  * NOTE: priv->mutex is not required before calling this function
2062  */
2063 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
2064 {
2065         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2066                 clear_bit(STATUS_SCANNING, &priv->status);
2067                 return 0;
2068         }
2069
2070         if (test_bit(STATUS_SCANNING, &priv->status)) {
2071                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2072                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2073                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2074                         queue_work(priv->workqueue, &priv->abort_scan);
2075
2076                 } else
2077                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2078
2079                 return test_bit(STATUS_SCANNING, &priv->status);
2080         }
2081
2082         return 0;
2083 }
2084
2085 /**
2086  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2087  * @ms: amount of time to wait (in milliseconds) for scan to abort
2088  *
2089  * NOTE: priv->mutex must be held before calling this function
2090  */
2091 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2092 {
2093         unsigned long now = jiffies;
2094         int ret;
2095
2096         ret = iwl3945_scan_cancel(priv);
2097         if (ret && ms) {
2098                 mutex_unlock(&priv->mutex);
2099                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2100                                 test_bit(STATUS_SCANNING, &priv->status))
2101                         msleep(1);
2102                 mutex_lock(&priv->mutex);
2103
2104                 return test_bit(STATUS_SCANNING, &priv->status);
2105         }
2106
2107         return ret;
2108 }
2109
2110 static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
2111 {
2112         /* Reset ieee stats */
2113
2114         /* We don't reset the net_device_stats (ieee->stats) on
2115          * re-association */
2116
2117         priv->last_seq_num = -1;
2118         priv->last_frag_num = -1;
2119         priv->last_packet_time = 0;
2120
2121         iwl3945_scan_cancel(priv);
2122 }
2123
2124 #define MAX_UCODE_BEACON_INTERVAL       1024
2125 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2126
2127 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2128 {
2129         u16 new_val = 0;
2130         u16 beacon_factor = 0;
2131
2132         beacon_factor =
2133             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2134                 / MAX_UCODE_BEACON_INTERVAL;
2135         new_val = beacon_val / beacon_factor;
2136
2137         return cpu_to_le16(new_val);
2138 }
2139
2140 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2141 {
2142         u64 interval_tm_unit;
2143         u64 tsf, result;
2144         unsigned long flags;
2145         struct ieee80211_conf *conf = NULL;
2146         u16 beacon_int = 0;
2147
2148         conf = ieee80211_get_hw_conf(priv->hw);
2149
2150         spin_lock_irqsave(&priv->lock, flags);
2151         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2152         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2153
2154         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2155
2156         tsf = priv->timestamp1;
2157         tsf = ((tsf << 32) | priv->timestamp0);
2158
2159         beacon_int = priv->beacon_int;
2160         spin_unlock_irqrestore(&priv->lock, flags);
2161
2162         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2163                 if (beacon_int == 0) {
2164                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2165                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2166                 } else {
2167                         priv->rxon_timing.beacon_interval =
2168                                 cpu_to_le16(beacon_int);
2169                         priv->rxon_timing.beacon_interval =
2170                             iwl3945_adjust_beacon_interval(
2171                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2172                 }
2173
2174                 priv->rxon_timing.atim_window = 0;
2175         } else {
2176                 priv->rxon_timing.beacon_interval =
2177                         iwl3945_adjust_beacon_interval(conf->beacon_int);
2178                 /* TODO: we need to get atim_window from upper stack
2179                  * for now we set to 0 */
2180                 priv->rxon_timing.atim_window = 0;
2181         }
2182
2183         interval_tm_unit =
2184                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2185         result = do_div(tsf, interval_tm_unit);
2186         priv->rxon_timing.beacon_init_val =
2187             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2188
2189         IWL_DEBUG_ASSOC
2190             ("beacon interval %d beacon timer %d beacon tim %d\n",
2191                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2192                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2193                 le16_to_cpu(priv->rxon_timing.atim_window));
2194 }
2195
2196 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2197 {
2198         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2199                 IWL_ERROR("APs don't scan.\n");
2200                 return 0;
2201         }
2202
2203         if (!iwl3945_is_ready_rf(priv)) {
2204                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2205                 return -EIO;
2206         }
2207
2208         if (test_bit(STATUS_SCANNING, &priv->status)) {
2209                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2210                 return -EAGAIN;
2211         }
2212
2213         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2214                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2215                                "Queuing.\n");
2216                 return -EAGAIN;
2217         }
2218
2219         IWL_DEBUG_INFO("Starting scan...\n");
2220         if (priv->cfg->sku & IWL_SKU_G)
2221                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
2222         if (priv->cfg->sku & IWL_SKU_A)
2223                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
2224         set_bit(STATUS_SCANNING, &priv->status);
2225         priv->scan_start = jiffies;
2226         priv->scan_pass_start = priv->scan_start;
2227
2228         queue_work(priv->workqueue, &priv->request_scan);
2229
2230         return 0;
2231 }
2232
2233 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2234 {
2235         struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2236
2237         if (hw_decrypt)
2238                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2239         else
2240                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2241
2242         return 0;
2243 }
2244
2245 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
2246                                           enum ieee80211_band band)
2247 {
2248         if (band == IEEE80211_BAND_5GHZ) {
2249                 priv->staging_rxon.flags &=
2250                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2251                       | RXON_FLG_CCK_MSK);
2252                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2253         } else {
2254                 /* Copied from iwl3945_bg_post_associate() */
2255                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2256                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2257                 else
2258                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2259
2260                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2261                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2262
2263                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2264                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2265                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2266         }
2267 }
2268
2269 /*
2270  * initialize rxon structure with default values from eeprom
2271  */
2272 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
2273 {
2274         const struct iwl3945_channel_info *ch_info;
2275
2276         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2277
2278         switch (priv->iw_mode) {
2279         case IEEE80211_IF_TYPE_AP:
2280                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2281                 break;
2282
2283         case IEEE80211_IF_TYPE_STA:
2284                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2285                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2286                 break;
2287
2288         case IEEE80211_IF_TYPE_IBSS:
2289                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2290                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2291                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2292                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2293                 break;
2294
2295         case IEEE80211_IF_TYPE_MNTR:
2296                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2297                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2298                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2299                 break;
2300         default:
2301                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
2302                 break;
2303         }
2304
2305 #if 0
2306         /* TODO:  Figure out when short_preamble would be set and cache from
2307          * that */
2308         if (!hw_to_local(priv->hw)->short_preamble)
2309                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2310         else
2311                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2312 #endif
2313
2314         ch_info = iwl3945_get_channel_info(priv, priv->band,
2315                                        le16_to_cpu(priv->active_rxon.channel));
2316
2317         if (!ch_info)
2318                 ch_info = &priv->channel_info[0];
2319
2320         /*
2321          * in some case A channels are all non IBSS
2322          * in this case force B/G channel
2323          */
2324         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2325             !(is_channel_ibss(ch_info)))
2326                 ch_info = &priv->channel_info[0];
2327
2328         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2329         if (is_channel_a_band(ch_info))
2330                 priv->band = IEEE80211_BAND_5GHZ;
2331         else
2332                 priv->band = IEEE80211_BAND_2GHZ;
2333
2334         iwl3945_set_flags_for_phymode(priv, priv->band);
2335
2336         priv->staging_rxon.ofdm_basic_rates =
2337             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2338         priv->staging_rxon.cck_basic_rates =
2339             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2340 }
2341
2342 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2343 {
2344         if (mode == IEEE80211_IF_TYPE_IBSS) {
2345                 const struct iwl3945_channel_info *ch_info;
2346
2347                 ch_info = iwl3945_get_channel_info(priv,
2348                         priv->band,
2349                         le16_to_cpu(priv->staging_rxon.channel));
2350
2351                 if (!ch_info || !is_channel_ibss(ch_info)) {
2352                         IWL_ERROR("channel %d not IBSS channel\n",
2353                                   le16_to_cpu(priv->staging_rxon.channel));
2354                         return -EINVAL;
2355                 }
2356         }
2357
2358         priv->iw_mode = mode;
2359
2360         iwl3945_connection_init_rx_config(priv);
2361         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2362
2363         iwl3945_clear_stations_table(priv);
2364
2365         /* dont commit rxon if rf-kill is on*/
2366         if (!iwl3945_is_ready_rf(priv))
2367                 return -EAGAIN;
2368
2369         cancel_delayed_work(&priv->scan_check);
2370         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2371                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2372                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2373                 return -EAGAIN;
2374         }
2375
2376         iwl3945_commit_rxon(priv);
2377
2378         return 0;
2379 }
2380
2381 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2382                                       struct ieee80211_tx_info *info,
2383                                       struct iwl3945_cmd *cmd,
2384                                       struct sk_buff *skb_frag,
2385                                       int last_frag)
2386 {
2387         struct iwl3945_hw_key *keyinfo =
2388             &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
2389
2390         switch (keyinfo->alg) {
2391         case ALG_CCMP:
2392                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2393                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2394                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2395                 break;
2396
2397         case ALG_TKIP:
2398 #if 0
2399                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2400
2401                 if (last_frag)
2402                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2403                                8);
2404                 else
2405                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2406 #endif
2407                 break;
2408
2409         case ALG_WEP:
2410                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2411                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2412
2413                 if (keyinfo->keylen == 13)
2414                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2415
2416                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2417
2418                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2419                              "with key %d\n", info->control.hw_key->hw_key_idx);
2420                 break;
2421
2422         default:
2423                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2424                 break;
2425         }
2426 }
2427
2428 /*
2429  * handle build REPLY_TX command notification.
2430  */
2431 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2432                                   struct iwl3945_cmd *cmd,
2433                                   struct ieee80211_tx_info *info,
2434                                   struct ieee80211_hdr *hdr,
2435                                   int is_unicast, u8 std_id)
2436 {
2437         __le16 fc = hdr->frame_control;
2438         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2439
2440         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2441         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
2442                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2443                 if (ieee80211_is_mgmt(fc))
2444                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2445                 if (ieee80211_is_probe_resp(fc) &&
2446                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2447                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2448         } else {
2449                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2450                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2451         }
2452
2453         cmd->cmd.tx.sta_id = std_id;
2454         if (ieee80211_has_morefrags(fc))
2455                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2456
2457         if (ieee80211_is_data_qos(fc)) {
2458                 u8 *qc = ieee80211_get_qos_ctl(hdr);
2459                 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
2460                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2461         } else {
2462                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2463         }
2464
2465         if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
2466                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2467                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2468         } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
2469                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2470                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2471         }
2472
2473         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2474                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2475
2476         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2477         if (ieee80211_is_mgmt(fc)) {
2478                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2479                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2480                 else
2481                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2482         } else {
2483                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2484 #ifdef CONFIG_IWL3945_LEDS
2485                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2486 #endif
2487         }
2488
2489         cmd->cmd.tx.driver_txop = 0;
2490         cmd->cmd.tx.tx_flags = tx_flags;
2491         cmd->cmd.tx.next_frame_len = 0;
2492 }
2493
2494 /**
2495  * iwl3945_get_sta_id - Find station's index within station table
2496  */
2497 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2498 {
2499         int sta_id;
2500         u16 fc = le16_to_cpu(hdr->frame_control);
2501
2502         /* If this frame is broadcast or management, use broadcast station id */
2503         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2504             is_multicast_ether_addr(hdr->addr1))
2505                 return priv->hw_setting.bcast_sta_id;
2506
2507         switch (priv->iw_mode) {
2508
2509         /* If we are a client station in a BSS network, use the special
2510          * AP station entry (that's the only station we communicate with) */
2511         case IEEE80211_IF_TYPE_STA:
2512                 return IWL_AP_ID;
2513
2514         /* If we are an AP, then find the station, or use BCAST */
2515         case IEEE80211_IF_TYPE_AP:
2516                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2517                 if (sta_id != IWL_INVALID_STATION)
2518                         return sta_id;
2519                 return priv->hw_setting.bcast_sta_id;
2520
2521         /* If this frame is going out to an IBSS network, find the station,
2522          * or create a new station table entry */
2523         case IEEE80211_IF_TYPE_IBSS: {
2524                 DECLARE_MAC_BUF(mac);
2525
2526                 /* Create new station table entry */
2527                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2528                 if (sta_id != IWL_INVALID_STATION)
2529                         return sta_id;
2530
2531                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2532
2533                 if (sta_id != IWL_INVALID_STATION)
2534                         return sta_id;
2535
2536                 IWL_DEBUG_DROP("Station %s not in station map. "
2537                                "Defaulting to broadcast...\n",
2538                                print_mac(mac, hdr->addr1));
2539                 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2540                 return priv->hw_setting.bcast_sta_id;
2541         }
2542         /* If we are in monitor mode, use BCAST. This is required for
2543          * packet injection. */
2544         case IEEE80211_IF_TYPE_MNTR:
2545                 return priv->hw_setting.bcast_sta_id;
2546
2547         default:
2548                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2549                 return priv->hw_setting.bcast_sta_id;
2550         }
2551 }
2552
2553 /*
2554  * start REPLY_TX command process
2555  */
2556 static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
2557 {
2558         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2559         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2560         struct iwl3945_tfd_frame *tfd;
2561         u32 *control_flags;
2562         int txq_id = skb_get_queue_mapping(skb);
2563         struct iwl3945_tx_queue *txq = NULL;
2564         struct iwl3945_queue *q = NULL;
2565         dma_addr_t phys_addr;
2566         dma_addr_t txcmd_phys;
2567         struct iwl3945_cmd *out_cmd = NULL;
2568         u16 len, idx, len_org, hdr_len;
2569         u8 id;
2570         u8 unicast;
2571         u8 sta_id;
2572         u8 tid = 0;
2573         u16 seq_number = 0;
2574         __le16 fc;
2575         u8 wait_write_ptr = 0;
2576         u8 *qc = NULL;
2577         unsigned long flags;
2578         int rc;
2579
2580         spin_lock_irqsave(&priv->lock, flags);
2581         if (iwl3945_is_rfkill(priv)) {
2582                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2583                 goto drop_unlock;
2584         }
2585
2586         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2587                 IWL_ERROR("ERROR: No TX rate available.\n");
2588                 goto drop_unlock;
2589         }
2590
2591         unicast = !is_multicast_ether_addr(hdr->addr1);
2592         id = 0;
2593
2594         fc = hdr->frame_control;
2595
2596 #ifdef CONFIG_IWL3945_DEBUG
2597         if (ieee80211_is_auth(fc))
2598                 IWL_DEBUG_TX("Sending AUTH frame\n");
2599         else if (ieee80211_is_assoc_req(fc))
2600                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2601         else if (ieee80211_is_reassoc_req(fc))
2602                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2603 #endif
2604
2605         /* drop all data frame if we are not associated */
2606         if (ieee80211_is_data(fc) &&
2607             (priv->iw_mode != IEEE80211_IF_TYPE_MNTR) && /* packet injection */
2608             (!iwl3945_is_associated(priv) ||
2609              ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id))) {
2610                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2611                 goto drop_unlock;
2612         }
2613
2614         spin_unlock_irqrestore(&priv->lock, flags);
2615
2616         hdr_len = ieee80211_get_hdrlen(le16_to_cpu(fc));
2617
2618         /* Find (or create) index into station table for destination station */
2619         sta_id = iwl3945_get_sta_id(priv, hdr);
2620         if (sta_id == IWL_INVALID_STATION) {
2621                 DECLARE_MAC_BUF(mac);
2622
2623                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2624                                print_mac(mac, hdr->addr1));
2625                 goto drop;
2626         }
2627
2628         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2629
2630         if (ieee80211_is_data_qos(fc)) {
2631                 qc = ieee80211_get_qos_ctl(hdr);
2632                 tid = qc[0] & 0xf;
2633                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2634                                 IEEE80211_SCTL_SEQ;
2635                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2636                         (hdr->seq_ctrl &
2637                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2638                 seq_number += 0x10;
2639         }
2640
2641         /* Descriptor for chosen Tx queue */
2642         txq = &priv->txq[txq_id];
2643         q = &txq->q;
2644
2645         spin_lock_irqsave(&priv->lock, flags);
2646
2647         /* Set up first empty TFD within this queue's circular TFD buffer */
2648         tfd = &txq->bd[q->write_ptr];
2649         memset(tfd, 0, sizeof(*tfd));
2650         control_flags = (u32 *) tfd;
2651         idx = get_cmd_index(q, q->write_ptr, 0);
2652
2653         /* Set up driver data for this TFD */
2654         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2655         txq->txb[q->write_ptr].skb[0] = skb;
2656
2657         /* Init first empty entry in queue's array of Tx/cmd buffers */
2658         out_cmd = &txq->cmd[idx];
2659         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2660         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2661
2662         /*
2663          * Set up the Tx-command (not MAC!) header.
2664          * Store the chosen Tx queue and TFD index within the sequence field;
2665          * after Tx, uCode's Tx response will return this value so driver can
2666          * locate the frame within the tx queue and do post-tx processing.
2667          */
2668         out_cmd->hdr.cmd = REPLY_TX;
2669         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2670                                 INDEX_TO_SEQ(q->write_ptr)));
2671
2672         /* Copy MAC header from skb into command buffer */
2673         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2674
2675         /*
2676          * Use the first empty entry in this queue's command buffer array
2677          * to contain the Tx command and MAC header concatenated together
2678          * (payload data will be in another buffer).
2679          * Size of this varies, due to varying MAC header length.
2680          * If end is not dword aligned, we'll have 2 extra bytes at the end
2681          * of the MAC header (device reads on dword boundaries).
2682          * We'll tell device about this padding later.
2683          */
2684         len = priv->hw_setting.tx_cmd_len +
2685                 sizeof(struct iwl3945_cmd_header) + hdr_len;
2686
2687         len_org = len;
2688         len = (len + 3) & ~3;
2689
2690         if (len_org != len)
2691                 len_org = 1;
2692         else
2693                 len_org = 0;
2694
2695         /* Physical address of this Tx command's header (not MAC header!),
2696          * within command buffer array. */
2697         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2698                      offsetof(struct iwl3945_cmd, hdr);
2699
2700         /* Add buffer containing Tx command and MAC(!) header to TFD's
2701          * first entry */
2702         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2703
2704         if (!(info->flags & IEEE80211_TX_CTL_DO_NOT_ENCRYPT))
2705                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2706
2707         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2708          * if any (802.11 null frames have no payload). */
2709         len = skb->len - hdr_len;
2710         if (len) {
2711                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2712                                            len, PCI_DMA_TODEVICE);
2713                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2714         }
2715
2716         if (!len)
2717                 /* If there is no payload, then we use only one Tx buffer */
2718                 *control_flags = TFD_CTL_COUNT_SET(1);
2719         else
2720                 /* Else use 2 buffers.
2721                  * Tell 3945 about any padding after MAC header */
2722                 *control_flags = TFD_CTL_COUNT_SET(2) |
2723                         TFD_CTL_PAD_SET(U32_PAD(len));
2724
2725         /* Total # bytes to be transmitted */
2726         len = (u16)skb->len;
2727         out_cmd->cmd.tx.len = cpu_to_le16(len);
2728
2729         /* TODO need this for burst mode later on */
2730         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
2731
2732         /* set is_hcca to 0; it probably will never be implemented */
2733         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2734
2735         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2736         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2737
2738         if (!ieee80211_has_morefrags(hdr->frame_control)) {
2739                 txq->need_update = 1;
2740                 if (qc) {
2741                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2742                 }
2743         } else {
2744                 wait_write_ptr = 1;
2745                 txq->need_update = 0;
2746         }
2747
2748         iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2749                            sizeof(out_cmd->cmd.tx));
2750
2751         iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2752                            ieee80211_get_hdrlen(le16_to_cpu(fc)));
2753
2754         /* Tell device the write index *just past* this latest filled TFD */
2755         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2756         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2757         spin_unlock_irqrestore(&priv->lock, flags);
2758
2759         if (rc)
2760                 return rc;
2761
2762         if ((iwl3945_queue_space(q) < q->high_mark)
2763             && priv->mac80211_registered) {
2764                 if (wait_write_ptr) {
2765                         spin_lock_irqsave(&priv->lock, flags);
2766                         txq->need_update = 1;
2767                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2768                         spin_unlock_irqrestore(&priv->lock, flags);
2769                 }
2770
2771                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2772         }
2773
2774         return 0;
2775
2776 drop_unlock:
2777         spin_unlock_irqrestore(&priv->lock, flags);
2778 drop:
2779         return -1;
2780 }
2781
2782 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2783 {
2784         const struct ieee80211_supported_band *sband = NULL;
2785         struct ieee80211_rate *rate;
2786         int i;
2787
2788         sband = iwl3945_get_band(priv, priv->band);
2789         if (!sband) {
2790                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2791                 return;
2792         }
2793
2794         priv->active_rate = 0;
2795         priv->active_rate_basic = 0;
2796
2797         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2798                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2799
2800         for (i = 0; i < sband->n_bitrates; i++) {
2801                 rate = &sband->bitrates[i];
2802                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2803                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2804                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2805                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2806                         priv->active_rate |= (1 << rate->hw_value);
2807                 }
2808         }
2809
2810         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2811                        priv->active_rate, priv->active_rate_basic);
2812
2813         /*
2814          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2815          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2816          * OFDM
2817          */
2818         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2819                 priv->staging_rxon.cck_basic_rates =
2820                     ((priv->active_rate_basic &
2821                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2822         else
2823                 priv->staging_rxon.cck_basic_rates =
2824                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2825
2826         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2827                 priv->staging_rxon.ofdm_basic_rates =
2828                     ((priv->active_rate_basic &
2829                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2830                       IWL_FIRST_OFDM_RATE) & 0xFF;
2831         else
2832                 priv->staging_rxon.ofdm_basic_rates =
2833                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2834 }
2835
2836 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
2837 {
2838         unsigned long flags;
2839
2840         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2841                 return;
2842
2843         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2844                           disable_radio ? "OFF" : "ON");
2845
2846         if (disable_radio) {
2847                 iwl3945_scan_cancel(priv);
2848                 /* FIXME: This is a workaround for AP */
2849                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2850                         spin_lock_irqsave(&priv->lock, flags);
2851                         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
2852                                     CSR_UCODE_SW_BIT_RFKILL);
2853                         spin_unlock_irqrestore(&priv->lock, flags);
2854                         iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2855                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2856                 }
2857                 return;
2858         }
2859
2860         spin_lock_irqsave(&priv->lock, flags);
2861         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2862
2863         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2864         spin_unlock_irqrestore(&priv->lock, flags);
2865
2866         /* wake up ucode */
2867         msleep(10);
2868
2869         spin_lock_irqsave(&priv->lock, flags);
2870         iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
2871         if (!iwl3945_grab_nic_access(priv))
2872                 iwl3945_release_nic_access(priv);
2873         spin_unlock_irqrestore(&priv->lock, flags);
2874
2875         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2876                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2877                                   "disabled by HW switch\n");
2878                 return;
2879         }
2880
2881         if (priv->is_open)
2882                 queue_work(priv->workqueue, &priv->restart);
2883         return;
2884 }
2885
2886 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
2887                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2888 {
2889         u16 fc =
2890             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2891
2892         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2893                 return;
2894
2895         if (!(fc & IEEE80211_FCTL_PROTECTED))
2896                 return;
2897
2898         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2899         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2900         case RX_RES_STATUS_SEC_TYPE_TKIP:
2901                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2902                     RX_RES_STATUS_BAD_ICV_MIC)
2903                         stats->flag |= RX_FLAG_MMIC_ERROR;
2904         case RX_RES_STATUS_SEC_TYPE_WEP:
2905         case RX_RES_STATUS_SEC_TYPE_CCMP:
2906                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2907                     RX_RES_STATUS_DECRYPT_OK) {
2908                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2909                         stats->flag |= RX_FLAG_DECRYPTED;
2910                 }
2911                 break;
2912
2913         default:
2914                 break;
2915         }
2916 }
2917
2918 #define IWL_PACKET_RETRY_TIME HZ
2919
2920 int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2921 {
2922         u16 sc = le16_to_cpu(header->seq_ctrl);
2923         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2924         u16 frag = sc & IEEE80211_SCTL_FRAG;
2925         u16 *last_seq, *last_frag;
2926         unsigned long *last_time;
2927
2928         switch (priv->iw_mode) {
2929         case IEEE80211_IF_TYPE_IBSS:{
2930                 struct list_head *p;
2931                 struct iwl3945_ibss_seq *entry = NULL;
2932                 u8 *mac = header->addr2;
2933                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2934
2935                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2936                         entry = list_entry(p, struct iwl3945_ibss_seq, list);
2937                         if (!compare_ether_addr(entry->mac, mac))
2938                                 break;
2939                 }
2940                 if (p == &priv->ibss_mac_hash[index]) {
2941                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2942                         if (!entry) {
2943                                 IWL_ERROR("Cannot malloc new mac entry\n");
2944                                 return 0;
2945                         }
2946                         memcpy(entry->mac, mac, ETH_ALEN);
2947                         entry->seq_num = seq;
2948                         entry->frag_num = frag;
2949                         entry->packet_time = jiffies;
2950                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2951                         return 0;
2952                 }
2953                 last_seq = &entry->seq_num;
2954                 last_frag = &entry->frag_num;
2955                 last_time = &entry->packet_time;
2956                 break;
2957         }
2958         case IEEE80211_IF_TYPE_STA:
2959                 last_seq = &priv->last_seq_num;
2960                 last_frag = &priv->last_frag_num;
2961                 last_time = &priv->last_packet_time;
2962                 break;
2963         default:
2964                 return 0;
2965         }
2966         if ((*last_seq == seq) &&
2967             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2968                 if (*last_frag == frag)
2969                         goto drop;
2970                 if (*last_frag + 1 != frag)
2971                         /* out-of-order fragment */
2972                         goto drop;
2973         } else
2974                 *last_seq = seq;
2975
2976         *last_frag = frag;
2977         *last_time = jiffies;
2978         return 0;
2979
2980  drop:
2981         return 1;
2982 }
2983
2984 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2985
2986 #include "iwl-spectrum.h"
2987
2988 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2989 #define BEACON_TIME_MASK_HIGH   0xFF000000
2990 #define TIME_UNIT               1024
2991
2992 /*
2993  * extended beacon time format
2994  * time in usec will be changed into a 32-bit value in 8:24 format
2995  * the high 1 byte is the beacon counts
2996  * the lower 3 bytes is the time in usec within one beacon interval
2997  */
2998
2999 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
3000 {
3001         u32 quot;
3002         u32 rem;
3003         u32 interval = beacon_interval * 1024;
3004
3005         if (!interval || !usec)
3006                 return 0;
3007
3008         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3009         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3010
3011         return (quot << 24) + rem;
3012 }
3013
3014 /* base is usually what we get from ucode with each received frame,
3015  * the same as HW timer counter counting down
3016  */
3017
3018 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3019 {
3020         u32 base_low = base & BEACON_TIME_MASK_LOW;
3021         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3022         u32 interval = beacon_interval * TIME_UNIT;
3023         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3024             (addon & BEACON_TIME_MASK_HIGH);
3025
3026         if (base_low > addon_low)
3027                 res += base_low - addon_low;
3028         else if (base_low < addon_low) {
3029                 res += interval + base_low - addon_low;
3030                 res += (1 << 24);
3031         } else
3032                 res += (1 << 24);
3033
3034         return cpu_to_le32(res);
3035 }
3036
3037 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
3038                                struct ieee80211_measurement_params *params,
3039                                u8 type)
3040 {
3041         struct iwl3945_spectrum_cmd spectrum;
3042         struct iwl3945_rx_packet *res;
3043         struct iwl3945_host_cmd cmd = {
3044                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3045                 .data = (void *)&spectrum,
3046                 .meta.flags = CMD_WANT_SKB,
3047         };
3048         u32 add_time = le64_to_cpu(params->start_time);
3049         int rc;
3050         int spectrum_resp_status;
3051         int duration = le16_to_cpu(params->duration);
3052
3053         if (iwl3945_is_associated(priv))
3054                 add_time =
3055                     iwl3945_usecs_to_beacons(
3056                         le64_to_cpu(params->start_time) - priv->last_tsf,
3057                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3058
3059         memset(&spectrum, 0, sizeof(spectrum));
3060
3061         spectrum.channel_count = cpu_to_le16(1);
3062         spectrum.flags =
3063             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3064         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3065         cmd.len = sizeof(spectrum);
3066         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3067
3068         if (iwl3945_is_associated(priv))
3069                 spectrum.start_time =
3070                     iwl3945_add_beacon_time(priv->last_beacon_time,
3071                                 add_time,
3072                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3073         else
3074                 spectrum.start_time = 0;
3075
3076         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3077         spectrum.channels[0].channel = params->channel;
3078         spectrum.channels[0].type = type;
3079         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3080                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3081                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3082
3083         rc = iwl3945_send_cmd_sync(priv, &cmd);
3084         if (rc)
3085                 return rc;
3086
3087         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
3088         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3089                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3090                 rc = -EIO;
3091         }
3092
3093         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3094         switch (spectrum_resp_status) {
3095         case 0:         /* Command will be handled */
3096                 if (res->u.spectrum.id != 0xff) {
3097                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
3098                                                 res->u.spectrum.id);
3099                         priv->measurement_status &= ~MEASUREMENT_READY;
3100                 }
3101                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3102                 rc = 0;
3103                 break;
3104
3105         case 1:         /* Command will not be handled */
3106                 rc = -EAGAIN;
3107                 break;
3108         }
3109
3110         dev_kfree_skb_any(cmd.meta.u.skb);
3111
3112         return rc;
3113 }
3114 #endif
3115
3116 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
3117                                struct iwl3945_rx_mem_buffer *rxb)
3118 {
3119         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3120         struct iwl3945_alive_resp *palive;
3121         struct delayed_work *pwork;
3122
3123         palive = &pkt->u.alive_frame;
3124
3125         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3126                        "0x%01X 0x%01X\n",
3127                        palive->is_valid, palive->ver_type,
3128                        palive->ver_subtype);
3129
3130         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3131                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3132                 memcpy(&priv->card_alive_init,
3133                        &pkt->u.alive_frame,
3134                        sizeof(struct iwl3945_init_alive_resp));
3135                 pwork = &priv->init_alive_start;
3136         } else {
3137                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3138                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3139                        sizeof(struct iwl3945_alive_resp));
3140                 pwork = &priv->alive_start;
3141                 iwl3945_disable_events(priv);
3142         }
3143
3144         /* We delay the ALIVE response by 5ms to
3145          * give the HW RF Kill time to activate... */
3146         if (palive->is_valid == UCODE_VALID_OK)
3147                 queue_delayed_work(priv->workqueue, pwork,
3148                                    msecs_to_jiffies(5));
3149         else
3150                 IWL_WARNING("uCode did not respond OK.\n");
3151 }
3152
3153 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
3154                                  struct iwl3945_rx_mem_buffer *rxb)
3155 {
3156         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3157
3158         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3159         return;
3160 }
3161
3162 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
3163                                struct iwl3945_rx_mem_buffer *rxb)
3164 {
3165         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3166
3167         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3168                 "seq 0x%04X ser 0x%08X\n",
3169                 le32_to_cpu(pkt->u.err_resp.error_type),
3170                 get_cmd_string(pkt->u.err_resp.cmd_id),
3171                 pkt->u.err_resp.cmd_id,
3172                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3173                 le32_to_cpu(pkt->u.err_resp.error_info));
3174 }
3175
3176 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3177
3178 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3179 {
3180         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3181         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3182         struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
3183         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3184                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3185         rxon->channel = csa->channel;
3186         priv->staging_rxon.channel = csa->channel;
3187 }
3188
3189 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3190                                           struct iwl3945_rx_mem_buffer *rxb)
3191 {
3192 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3193         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3194         struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
3195
3196         if (!report->state) {
3197                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3198                           "Spectrum Measure Notification: Start\n");
3199                 return;
3200         }
3201
3202         memcpy(&priv->measure_report, report, sizeof(*report));
3203         priv->measurement_status |= MEASUREMENT_READY;
3204 #endif
3205 }
3206
3207 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3208                                   struct iwl3945_rx_mem_buffer *rxb)
3209 {
3210 #ifdef CONFIG_IWL3945_DEBUG
3211         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3212         struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
3213         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3214                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3215 #endif
3216 }
3217
3218 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3219                                              struct iwl3945_rx_mem_buffer *rxb)
3220 {
3221         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3222         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3223                         "notification for %s:\n",
3224                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3225         iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3226 }
3227
3228 static void iwl3945_bg_beacon_update(struct work_struct *work)
3229 {
3230         struct iwl3945_priv *priv =
3231                 container_of(work, struct iwl3945_priv, beacon_update);
3232         struct sk_buff *beacon;
3233
3234         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3235         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
3236
3237         if (!beacon) {
3238                 IWL_ERROR("update beacon failed\n");
3239                 return;
3240         }
3241
3242         mutex_lock(&priv->mutex);
3243         /* new beacon skb is allocated every time; dispose previous.*/
3244         if (priv->ibss_beacon)
3245                 dev_kfree_skb(priv->ibss_beacon);
3246
3247         priv->ibss_beacon = beacon;
3248         mutex_unlock(&priv->mutex);
3249
3250         iwl3945_send_beacon_cmd(priv);
3251 }
3252
3253 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3254                                 struct iwl3945_rx_mem_buffer *rxb)
3255 {
3256 #ifdef CONFIG_IWL3945_DEBUG
3257         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3258         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3259         u8 rate = beacon->beacon_notify_hdr.rate;
3260
3261         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3262                 "tsf %d %d rate %d\n",
3263                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3264                 beacon->beacon_notify_hdr.failure_frame,
3265                 le32_to_cpu(beacon->ibss_mgr_status),
3266                 le32_to_cpu(beacon->high_tsf),
3267                 le32_to_cpu(beacon->low_tsf), rate);
3268 #endif
3269
3270         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3271             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3272                 queue_work(priv->workqueue, &priv->beacon_update);
3273 }
3274
3275 /* Service response to REPLY_SCAN_CMD (0x80) */
3276 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3277                               struct iwl3945_rx_mem_buffer *rxb)
3278 {
3279 #ifdef CONFIG_IWL3945_DEBUG
3280         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3281         struct iwl3945_scanreq_notification *notif =
3282             (struct iwl3945_scanreq_notification *)pkt->u.raw;
3283
3284         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3285 #endif
3286 }
3287
3288 /* Service SCAN_START_NOTIFICATION (0x82) */
3289 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3290                                     struct iwl3945_rx_mem_buffer *rxb)
3291 {
3292         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3293         struct iwl3945_scanstart_notification *notif =
3294             (struct iwl3945_scanstart_notification *)pkt->u.raw;
3295         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3296         IWL_DEBUG_SCAN("Scan start: "
3297                        "%d [802.11%s] "
3298                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3299                        notif->channel,
3300                        notif->band ? "bg" : "a",
3301                        notif->tsf_high,
3302                        notif->tsf_low, notif->status, notif->beacon_timer);
3303 }
3304
3305 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3306 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3307                                       struct iwl3945_rx_mem_buffer *rxb)
3308 {
3309         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3310         struct iwl3945_scanresults_notification *notif =
3311             (struct iwl3945_scanresults_notification *)pkt->u.raw;
3312
3313         IWL_DEBUG_SCAN("Scan ch.res: "
3314                        "%d [802.11%s] "
3315                        "(TSF: 0x%08X:%08X) - %d "
3316                        "elapsed=%lu usec (%dms since last)\n",
3317                        notif->channel,
3318                        notif->band ? "bg" : "a",
3319                        le32_to_cpu(notif->tsf_high),
3320                        le32_to_cpu(notif->tsf_low),
3321                        le32_to_cpu(notif->statistics[0]),
3322                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3323                        jiffies_to_msecs(elapsed_jiffies
3324                                         (priv->last_scan_jiffies, jiffies)));
3325
3326         priv->last_scan_jiffies = jiffies;
3327         priv->next_scan_jiffies = 0;
3328 }
3329
3330 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3331 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3332                                        struct iwl3945_rx_mem_buffer *rxb)
3333 {
3334         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3335         struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3336
3337         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3338                        scan_notif->scanned_channels,
3339                        scan_notif->tsf_low,
3340                        scan_notif->tsf_high, scan_notif->status);
3341
3342         /* The HW is no longer scanning */
3343         clear_bit(STATUS_SCAN_HW, &priv->status);
3344
3345         /* The scan completion notification came in, so kill that timer... */
3346         cancel_delayed_work(&priv->scan_check);
3347
3348         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3349                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3350                                                         "2.4" : "5.2",
3351                        jiffies_to_msecs(elapsed_jiffies
3352                                         (priv->scan_pass_start, jiffies)));
3353
3354         /* Remove this scanned band from the list of pending
3355          * bands to scan, band G precedes A in order of scanning
3356          * as seen in iwl3945_bg_request_scan */
3357         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3358                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3359         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
3360                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
3361
3362         /* If a request to abort was given, or the scan did not succeed
3363          * then we reset the scan state machine and terminate,
3364          * re-queuing another scan if one has been requested */
3365         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3366                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3367                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3368         } else {
3369                 /* If there are more bands on this scan pass reschedule */
3370                 if (priv->scan_bands > 0)
3371                         goto reschedule;
3372         }
3373
3374         priv->last_scan_jiffies = jiffies;
3375         priv->next_scan_jiffies = 0;
3376         IWL_DEBUG_INFO("Setting scan to off\n");
3377
3378         clear_bit(STATUS_SCANNING, &priv->status);
3379
3380         IWL_DEBUG_INFO("Scan took %dms\n",
3381                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3382
3383         queue_work(priv->workqueue, &priv->scan_completed);
3384
3385         return;
3386
3387 reschedule:
3388         priv->scan_pass_start = jiffies;
3389         queue_work(priv->workqueue, &priv->request_scan);
3390 }
3391
3392 /* Handle notification from uCode that card's power state is changing
3393  * due to software, hardware, or critical temperature RFKILL */
3394 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3395                                     struct iwl3945_rx_mem_buffer *rxb)
3396 {
3397         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3398         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3399         unsigned long status = priv->status;
3400
3401         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3402                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3403                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3404
3405         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3406                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3407
3408         if (flags & HW_CARD_DISABLED)
3409                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3410         else
3411                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3412
3413
3414         if (flags & SW_CARD_DISABLED)
3415                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3416         else
3417                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3418
3419         iwl3945_scan_cancel(priv);
3420
3421         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3422              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3423             (test_bit(STATUS_RF_KILL_SW, &status) !=
3424              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3425                 queue_work(priv->workqueue, &priv->rf_kill);
3426         else
3427                 wake_up_interruptible(&priv->wait_command_queue);
3428 }
3429
3430 /**
3431  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3432  *
3433  * Setup the RX handlers for each of the reply types sent from the uCode
3434  * to the host.
3435  *
3436  * This function chains into the hardware specific files for them to setup
3437  * any hardware specific handlers as well.
3438  */
3439 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3440 {
3441         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3442         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3443         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3444         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3445         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3446             iwl3945_rx_spectrum_measure_notif;
3447         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3448         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3449             iwl3945_rx_pm_debug_statistics_notif;
3450         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3451
3452         /*
3453          * The same handler is used for both the REPLY to a discrete
3454          * statistics request from the host as well as for the periodic
3455          * statistics notifications (after received beacons) from the uCode.
3456          */
3457         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3458         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3459
3460         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3461         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3462         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3463             iwl3945_rx_scan_results_notif;
3464         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3465             iwl3945_rx_scan_complete_notif;
3466         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3467
3468         /* Set up hardware specific Rx handlers */
3469         iwl3945_hw_rx_handler_setup(priv);
3470 }
3471
3472 /**
3473  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3474  * When FW advances 'R' index, all entries between old and new 'R' index
3475  * need to be reclaimed.
3476  */
3477 static void iwl3945_cmd_queue_reclaim(struct iwl3945_priv *priv,
3478                                       int txq_id, int index)
3479 {
3480         struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3481         struct iwl3945_queue *q = &txq->q;
3482         int nfreed = 0;
3483
3484         if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3485                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3486                           "is out of range [0-%d] %d %d.\n", txq_id,
3487                           index, q->n_bd, q->write_ptr, q->read_ptr);
3488                 return;
3489         }
3490
3491         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3492                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3493                 if (nfreed > 1) {
3494                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3495                                         q->write_ptr, q->read_ptr);
3496                         queue_work(priv->workqueue, &priv->restart);
3497                         break;
3498                 }
3499                 nfreed++;
3500         }
3501 }
3502
3503
3504 /**
3505  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3506  * @rxb: Rx buffer to reclaim
3507  *
3508  * If an Rx buffer has an async callback associated with it the callback
3509  * will be executed.  The attached skb (if present) will only be freed
3510  * if the callback returns 1
3511  */
3512 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3513                                 struct iwl3945_rx_mem_buffer *rxb)
3514 {
3515         struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3516         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3517         int txq_id = SEQ_TO_QUEUE(sequence);
3518         int index = SEQ_TO_INDEX(sequence);
3519         int huge = sequence & SEQ_HUGE_FRAME;
3520         int cmd_index;
3521         struct iwl3945_cmd *cmd;
3522
3523         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3524
3525         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3526         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3527
3528         /* Input error checking is done when commands are added to queue. */
3529         if (cmd->meta.flags & CMD_WANT_SKB) {
3530                 cmd->meta.source->u.skb = rxb->skb;
3531                 rxb->skb = NULL;
3532         } else if (cmd->meta.u.callback &&
3533                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3534                 rxb->skb = NULL;
3535
3536         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
3537
3538         if (!(cmd->meta.flags & CMD_ASYNC)) {
3539                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3540                 wake_up_interruptible(&priv->wait_command_queue);
3541         }
3542 }
3543
3544 /************************** RX-FUNCTIONS ****************************/
3545 /*
3546  * Rx theory of operation
3547  *
3548  * The host allocates 32 DMA target addresses and passes the host address
3549  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3550  * 0 to 31
3551  *
3552  * Rx Queue Indexes
3553  * The host/firmware share two index registers for managing the Rx buffers.
3554  *
3555  * The READ index maps to the first position that the firmware may be writing
3556  * to -- the driver can read up to (but not including) this position and get
3557  * good data.
3558  * The READ index is managed by the firmware once the card is enabled.
3559  *
3560  * The WRITE index maps to the last position the driver has read from -- the
3561  * position preceding WRITE is the last slot the firmware can place a packet.
3562  *
3563  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3564  * WRITE = READ.
3565  *
3566  * During initialization, the host sets up the READ queue position to the first
3567  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3568  *
3569  * When the firmware places a packet in a buffer, it will advance the READ index
3570  * and fire the RX interrupt.  The driver can then query the READ index and
3571  * process as many packets as possible, moving the WRITE index forward as it
3572  * resets the Rx queue buffers with new memory.
3573  *
3574  * The management in the driver is as follows:
3575  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3576  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3577  *   to replenish the iwl->rxq->rx_free.
3578  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3579  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3580  *   'processed' and 'read' driver indexes as well)
3581  * + A received packet is processed and handed to the kernel network stack,
3582  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3583  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3584  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3585  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3586  *   were enough free buffers and RX_STALLED is set it is cleared.
3587  *
3588  *
3589  * Driver sequence:
3590  *
3591  * iwl3945_rx_queue_alloc()   Allocates rx_free
3592  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3593  *                            iwl3945_rx_queue_restock
3594  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3595  *                            queue, updates firmware pointers, and updates
3596  *                            the WRITE index.  If insufficient rx_free buffers
3597  *                            are available, schedules iwl3945_rx_replenish
3598  *
3599  * -- enable interrupts --
3600  * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
3601  *                            READ INDEX, detaching the SKB from the pool.
3602  *                            Moves the packet buffer from queue to rx_used.
3603  *                            Calls iwl3945_rx_queue_restock to refill any empty
3604  *                            slots.
3605  * ...
3606  *
3607  */
3608
3609 /**
3610  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3611  */
3612 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3613 {
3614         int s = q->read - q->write;
3615         if (s <= 0)
3616                 s += RX_QUEUE_SIZE;
3617         /* keep some buffer to not confuse full and empty queue */
3618         s -= 2;
3619         if (s < 0)
3620                 s = 0;
3621         return s;
3622 }
3623
3624 /**
3625  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3626  */
3627 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
3628 {
3629         u32 reg = 0;
3630         int rc = 0;
3631         unsigned long flags;
3632
3633         spin_lock_irqsave(&q->lock, flags);
3634
3635         if (q->need_update == 0)
3636                 goto exit_unlock;
3637
3638         /* If power-saving is in use, make sure device is awake */
3639         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3640                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3641
3642                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3643                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
3644                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3645                         goto exit_unlock;
3646                 }
3647
3648                 rc = iwl3945_grab_nic_access(priv);
3649                 if (rc)
3650                         goto exit_unlock;
3651
3652                 /* Device expects a multiple of 8 */
3653                 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3654                                      q->write & ~0x7);
3655                 iwl3945_release_nic_access(priv);
3656
3657         /* Else device is assumed to be awake */
3658         } else
3659                 /* Device expects a multiple of 8 */
3660                 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3661
3662
3663         q->need_update = 0;
3664
3665  exit_unlock:
3666         spin_unlock_irqrestore(&q->lock, flags);
3667         return rc;
3668 }
3669
3670 /**
3671  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3672  */
3673 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
3674                                           dma_addr_t dma_addr)
3675 {
3676         return cpu_to_le32((u32)dma_addr);
3677 }
3678
3679 /**
3680  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3681  *
3682  * If there are slots in the RX queue that need to be restocked,
3683  * and we have free pre-allocated buffers, fill the ranks as much
3684  * as we can, pulling from rx_free.
3685  *
3686  * This moves the 'write' index forward to catch up with 'processed', and
3687  * also updates the memory address in the firmware to reference the new
3688  * target buffer.
3689  */
3690 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
3691 {
3692         struct iwl3945_rx_queue *rxq = &priv->rxq;
3693         struct list_head *element;
3694         struct iwl3945_rx_mem_buffer *rxb;
3695         unsigned long flags;
3696         int write, rc;
3697
3698         spin_lock_irqsave(&rxq->lock, flags);
3699         write = rxq->write & ~0x7;
3700         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3701                 /* Get next free Rx buffer, remove from free list */
3702                 element = rxq->rx_free.next;
3703                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3704                 list_del(element);
3705
3706                 /* Point to Rx buffer via next RBD in circular buffer */
3707                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3708                 rxq->queue[rxq->write] = rxb;
3709                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3710                 rxq->free_count--;
3711         }
3712         spin_unlock_irqrestore(&rxq->lock, flags);
3713         /* If the pre-allocated buffer pool is dropping low, schedule to
3714          * refill it */
3715         if (rxq->free_count <= RX_LOW_WATERMARK)
3716                 queue_work(priv->workqueue, &priv->rx_replenish);
3717
3718
3719         /* If we've added more space for the firmware to place data, tell it.
3720          * Increment device's write pointer in multiples of 8. */
3721         if ((write != (rxq->write & ~0x7))
3722             || (abs(rxq->write - rxq->read) > 7)) {
3723                 spin_lock_irqsave(&rxq->lock, flags);
3724                 rxq->need_update = 1;
3725                 spin_unlock_irqrestore(&rxq->lock, flags);
3726                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3727                 if (rc)
3728                         return rc;
3729         }
3730
3731         return 0;
3732 }
3733
3734 /**
3735  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3736  *
3737  * When moving to rx_free an SKB is allocated for the slot.
3738  *
3739  * Also restock the Rx queue via iwl3945_rx_queue_restock.
3740  * This is called as a scheduled work item (except for during initialization)
3741  */
3742 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
3743 {
3744         struct iwl3945_rx_queue *rxq = &priv->rxq;
3745         struct list_head *element;
3746         struct iwl3945_rx_mem_buffer *rxb;
3747         unsigned long flags;
3748         spin_lock_irqsave(&rxq->lock, flags);
3749         while (!list_empty(&rxq->rx_used)) {
3750                 element = rxq->rx_used.next;
3751                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3752
3753                 /* Alloc a new receive buffer */
3754                 rxb->skb =
3755                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3756                 if (!rxb->skb) {
3757                         if (net_ratelimit())
3758                                 printk(KERN_CRIT DRV_NAME
3759                                        ": Can not allocate SKB buffers\n");
3760                         /* We don't reschedule replenish work here -- we will
3761                          * call the restock method and if it still needs
3762                          * more buffers it will schedule replenish */
3763                         break;
3764                 }
3765
3766                 /* If radiotap head is required, reserve some headroom here.
3767                  * The physical head count is a variable rx_stats->phy_count.
3768                  * We reserve 4 bytes here. Plus these extra bytes, the
3769                  * headroom of the physical head should be enough for the
3770                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3771                  */
3772                 skb_reserve(rxb->skb, 4);
3773
3774                 priv->alloc_rxb_skb++;
3775                 list_del(element);
3776
3777                 /* Get physical address of RB/SKB */
3778                 rxb->dma_addr =
3779                     pci_map_single(priv->pci_dev, rxb->skb->data,
3780                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3781                 list_add_tail(&rxb->list, &rxq->rx_free);
3782                 rxq->free_count++;
3783         }
3784         spin_unlock_irqrestore(&rxq->lock, flags);
3785 }
3786
3787 /*
3788  * this should be called while priv->lock is locked
3789  */
3790 static void __iwl3945_rx_replenish(void *data)
3791 {
3792         struct iwl3945_priv *priv = data;
3793
3794         iwl3945_rx_allocate(priv);
3795         iwl3945_rx_queue_restock(priv);
3796 }
3797
3798
3799 void iwl3945_rx_replenish(void *data)
3800 {
3801         struct iwl3945_priv *priv = data;
3802         unsigned long flags;
3803
3804         iwl3945_rx_allocate(priv);
3805
3806         spin_lock_irqsave(&priv->lock, flags);
3807         iwl3945_rx_queue_restock(priv);
3808         spin_unlock_irqrestore(&priv->lock, flags);
3809 }
3810
3811 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3812  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3813  * This free routine walks the list of POOL entries and if SKB is set to
3814  * non NULL it is unmapped and freed
3815  */
3816 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3817 {
3818         int i;
3819         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3820                 if (rxq->pool[i].skb != NULL) {
3821                         pci_unmap_single(priv->pci_dev,
3822                                          rxq->pool[i].dma_addr,
3823                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3824                         dev_kfree_skb(rxq->pool[i].skb);
3825                 }
3826         }
3827
3828         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3829                             rxq->dma_addr);
3830         rxq->bd = NULL;
3831 }
3832
3833 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
3834 {
3835         struct iwl3945_rx_queue *rxq = &priv->rxq;
3836         struct pci_dev *dev = priv->pci_dev;
3837         int i;
3838
3839         spin_lock_init(&rxq->lock);
3840         INIT_LIST_HEAD(&rxq->rx_free);
3841         INIT_LIST_HEAD(&rxq->rx_used);
3842
3843         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3844         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3845         if (!rxq->bd)
3846                 return -ENOMEM;
3847
3848         /* Fill the rx_used queue with _all_ of the Rx buffers */
3849         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3850                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3851
3852         /* Set us so that we have processed and used all buffers, but have
3853          * not restocked the Rx queue with fresh buffers */
3854         rxq->read = rxq->write = 0;
3855         rxq->free_count = 0;
3856         rxq->need_update = 0;
3857         return 0;
3858 }
3859
3860 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3861 {
3862         unsigned long flags;
3863         int i;
3864         spin_lock_irqsave(&rxq->lock, flags);
3865         INIT_LIST_HEAD(&rxq->rx_free);
3866         INIT_LIST_HEAD(&rxq->rx_used);
3867         /* Fill the rx_used queue with _all_ of the Rx buffers */
3868         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3869                 /* In the reset function, these buffers may have been allocated
3870                  * to an SKB, so we need to unmap and free potential storage */
3871                 if (rxq->pool[i].skb != NULL) {
3872                         pci_unmap_single(priv->pci_dev,
3873                                          rxq->pool[i].dma_addr,
3874                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3875                         priv->alloc_rxb_skb--;
3876                         dev_kfree_skb(rxq->pool[i].skb);
3877                         rxq->pool[i].skb = NULL;
3878                 }
3879                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3880         }
3881
3882         /* Set us so that we have processed and used all buffers, but have
3883          * not restocked the Rx queue with fresh buffers */
3884         rxq->read = rxq->write = 0;
3885         rxq->free_count = 0;
3886         spin_unlock_irqrestore(&rxq->lock, flags);
3887 }
3888
3889 /* Convert linear signal-to-noise ratio into dB */
3890 static u8 ratio2dB[100] = {
3891 /*       0   1   2   3   4   5   6   7   8   9 */
3892          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3893         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3894         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3895         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3896         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3897         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3898         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3899         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3900         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3901         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3902 };
3903
3904 /* Calculates a relative dB value from a ratio of linear
3905  *   (i.e. not dB) signal levels.
3906  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3907 int iwl3945_calc_db_from_ratio(int sig_ratio)
3908 {
3909         /* 1000:1 or higher just report as 60 dB */
3910         if (sig_ratio >= 1000)
3911                 return 60;
3912
3913         /* 100:1 or higher, divide by 10 and use table,
3914          *   add 20 dB to make up for divide by 10 */
3915         if (sig_ratio >= 100)
3916                 return (20 + (int)ratio2dB[sig_ratio/10]);
3917
3918         /* We shouldn't see this */
3919         if (sig_ratio < 1)
3920                 return 0;
3921
3922         /* Use table for ratios 1:1 - 99:1 */
3923         return (int)ratio2dB[sig_ratio];
3924 }
3925
3926 #define PERFECT_RSSI (-20) /* dBm */
3927 #define WORST_RSSI (-95)   /* dBm */
3928 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3929
3930 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3931  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3932  *   about formulas used below. */
3933 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3934 {
3935         int sig_qual;
3936         int degradation = PERFECT_RSSI - rssi_dbm;
3937
3938         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3939          * as indicator; formula is (signal dbm - noise dbm).
3940          * SNR at or above 40 is a great signal (100%).
3941          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3942          * Weakest usable signal is usually 10 - 15 dB SNR. */
3943         if (noise_dbm) {
3944                 if (rssi_dbm - noise_dbm >= 40)
3945                         return 100;
3946                 else if (rssi_dbm < noise_dbm)
3947                         return 0;
3948                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3949
3950         /* Else use just the signal level.
3951          * This formula is a least squares fit of data points collected and
3952          *   compared with a reference system that had a percentage (%) display
3953          *   for signal quality. */
3954         } else
3955                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3956                             (15 * RSSI_RANGE + 62 * degradation)) /
3957                            (RSSI_RANGE * RSSI_RANGE);
3958
3959         if (sig_qual > 100)
3960                 sig_qual = 100;
3961         else if (sig_qual < 1)
3962                 sig_qual = 0;
3963
3964         return sig_qual;
3965 }
3966
3967 /**
3968  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3969  *
3970  * Uses the priv->rx_handlers callback function array to invoke
3971  * the appropriate handlers, including command responses,
3972  * frame-received notifications, and other notifications.
3973  */
3974 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
3975 {
3976         struct iwl3945_rx_mem_buffer *rxb;
3977         struct iwl3945_rx_packet *pkt;
3978         struct iwl3945_rx_queue *rxq = &priv->rxq;
3979         u32 r, i;
3980         int reclaim;
3981         unsigned long flags;
3982         u8 fill_rx = 0;
3983         u32 count = 8;
3984
3985         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3986          * buffer that the driver may process (last buffer filled by ucode). */
3987         r = iwl3945_hw_get_rx_read(priv);
3988         i = rxq->read;
3989
3990         if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3991                 fill_rx = 1;
3992         /* Rx interrupt, but nothing sent from uCode */
3993         if (i == r)
3994                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3995
3996         while (i != r) {
3997                 rxb = rxq->queue[i];
3998
3999                 /* If an RXB doesn't have a Rx queue slot associated with it,
4000                  * then a bug has been introduced in the queue refilling
4001                  * routines -- catch it here */
4002                 BUG_ON(rxb == NULL);
4003
4004                 rxq->queue[i] = NULL;
4005
4006                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4007                                             IWL_RX_BUF_SIZE,
4008                                             PCI_DMA_FROMDEVICE);
4009                 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
4010
4011                 /* Reclaim a command buffer only if this packet is a response
4012                  *   to a (driver-originated) command.
4013                  * If the packet (e.g. Rx frame) originated from uCode,
4014                  *   there is no command buffer to reclaim.
4015                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4016                  *   but apparently a few don't get set; catch them here. */
4017                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4018                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4019                         (pkt->hdr.cmd != REPLY_TX);
4020
4021                 /* Based on type of command response or notification,
4022                  *   handle those that need handling via function in
4023                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
4024                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4025                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4026                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4027                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4028                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4029                 } else {
4030                         /* No handling needed */
4031                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4032                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4033                                 r, i, get_cmd_string(pkt->hdr.cmd),
4034                                 pkt->hdr.cmd);
4035                 }
4036
4037                 if (reclaim) {
4038                         /* Invoke any callbacks, transfer the skb to caller, and
4039                          * fire off the (possibly) blocking iwl3945_send_cmd()
4040                          * as we reclaim the driver command queue */
4041                         if (rxb && rxb->skb)
4042                                 iwl3945_tx_cmd_complete(priv, rxb);
4043                         else
4044                                 IWL_WARNING("Claim null rxb?\n");
4045                 }
4046
4047                 /* For now we just don't re-use anything.  We can tweak this
4048                  * later to try and re-use notification packets and SKBs that
4049                  * fail to Rx correctly */
4050                 if (rxb->skb != NULL) {
4051                         priv->alloc_rxb_skb--;
4052                         dev_kfree_skb_any(rxb->skb);
4053                         rxb->skb = NULL;
4054                 }
4055
4056                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4057                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4058                 spin_lock_irqsave(&rxq->lock, flags);
4059                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4060                 spin_unlock_irqrestore(&rxq->lock, flags);
4061                 i = (i + 1) & RX_QUEUE_MASK;
4062                 /* If there are a lot of unused frames,
4063                  * restock the Rx queue so ucode won't assert. */
4064                 if (fill_rx) {
4065                         count++;
4066                         if (count >= 8) {
4067                                 priv->rxq.read = i;
4068                                 __iwl3945_rx_replenish(priv);
4069                                 count = 0;
4070                         }
4071                 }
4072         }
4073
4074         /* Backtrack one entry */
4075         priv->rxq.read = i;
4076         iwl3945_rx_queue_restock(priv);
4077 }
4078
4079 /**
4080  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
4081  */
4082 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
4083                                   struct iwl3945_tx_queue *txq)
4084 {
4085         u32 reg = 0;
4086         int rc = 0;
4087         int txq_id = txq->q.id;
4088
4089         if (txq->need_update == 0)
4090                 return rc;
4091
4092         /* if we're trying to save power */
4093         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4094                 /* wake up nic if it's powered down ...
4095                  * uCode will wake up, and interrupt us again, so next
4096                  * time we'll skip this part. */
4097                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4098
4099                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4100                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4101                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
4102                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4103                         return rc;
4104                 }
4105
4106                 /* restore this queue's parameters in nic hardware. */
4107                 rc = iwl3945_grab_nic_access(priv);
4108                 if (rc)
4109                         return rc;
4110                 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4111                                      txq->q.write_ptr | (txq_id << 8));
4112                 iwl3945_release_nic_access(priv);
4113
4114         /* else not in power-save mode, uCode will never sleep when we're
4115          * trying to tx (during RFKILL, we're not trying to tx). */
4116         } else
4117                 iwl3945_write32(priv, HBUS_TARG_WRPTR,
4118                             txq->q.write_ptr | (txq_id << 8));
4119
4120         txq->need_update = 0;
4121
4122         return rc;
4123 }
4124
4125 #ifdef CONFIG_IWL3945_DEBUG
4126 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
4127 {
4128         DECLARE_MAC_BUF(mac);
4129
4130         IWL_DEBUG_RADIO("RX CONFIG:\n");
4131         iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4132         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4133         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4134         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4135                         le32_to_cpu(rxon->filter_flags));
4136         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4137         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4138                         rxon->ofdm_basic_rates);
4139         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4140         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4141                         print_mac(mac, rxon->node_addr));
4142         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4143                         print_mac(mac, rxon->bssid_addr));
4144         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4145 }
4146 #endif
4147
4148 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
4149 {
4150         IWL_DEBUG_ISR("Enabling interrupts\n");
4151         set_bit(STATUS_INT_ENABLED, &priv->status);
4152         iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4153 }
4154
4155
4156 /* call this function to flush any scheduled tasklet */
4157 static inline void iwl_synchronize_irq(struct iwl3945_priv *priv)
4158 {
4159         /* wait to make sure we flush pedding tasklet*/
4160         synchronize_irq(priv->pci_dev->irq);
4161         tasklet_kill(&priv->irq_tasklet);
4162 }
4163
4164
4165 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
4166 {
4167         clear_bit(STATUS_INT_ENABLED, &priv->status);
4168
4169         /* disable interrupts from uCode/NIC to host */
4170         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4171
4172         /* acknowledge/clear/reset any interrupts still pending
4173          * from uCode or flow handler (Rx/Tx DMA) */
4174         iwl3945_write32(priv, CSR_INT, 0xffffffff);
4175         iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4176         IWL_DEBUG_ISR("Disabled interrupts\n");
4177 }
4178
4179 static const char *desc_lookup(int i)
4180 {
4181         switch (i) {
4182         case 1:
4183                 return "FAIL";
4184         case 2:
4185                 return "BAD_PARAM";
4186         case 3:
4187                 return "BAD_CHECKSUM";
4188         case 4:
4189                 return "NMI_INTERRUPT";
4190         case 5:
4191                 return "SYSASSERT";
4192         case 6:
4193                 return "FATAL_ERROR";
4194         }
4195
4196         return "UNKNOWN";
4197 }
4198
4199 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4200 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4201
4202 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4203 {
4204         u32 i;
4205         u32 desc, time, count, base, data1;
4206         u32 blink1, blink2, ilink1, ilink2;
4207         int rc;
4208
4209         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4210
4211         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4212                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4213                 return;
4214         }
4215
4216         rc = iwl3945_grab_nic_access(priv);
4217         if (rc) {
4218                 IWL_WARNING("Can not read from adapter at this time.\n");
4219                 return;
4220         }
4221
4222         count = iwl3945_read_targ_mem(priv, base);
4223
4224         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4225                 IWL_ERROR("Start IWL Error Log Dump:\n");
4226                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4227         }
4228
4229         IWL_ERROR("Desc       Time       asrtPC  blink2 "
4230                   "ilink1  nmiPC   Line\n");
4231         for (i = ERROR_START_OFFSET;
4232              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4233              i += ERROR_ELEM_SIZE) {
4234                 desc = iwl3945_read_targ_mem(priv, base + i);
4235                 time =
4236                     iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4237                 blink1 =
4238                     iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4239                 blink2 =
4240                     iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4241                 ilink1 =
4242                     iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4243                 ilink2 =
4244                     iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4245                 data1 =
4246                     iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4247
4248                 IWL_ERROR
4249                     ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4250                      desc_lookup(desc), desc, time, blink1, blink2,
4251                      ilink1, ilink2, data1);
4252         }
4253
4254         iwl3945_release_nic_access(priv);
4255
4256 }
4257
4258 #define EVENT_START_OFFSET  (6 * sizeof(u32))
4259
4260 /**
4261  * iwl3945_print_event_log - Dump error event log to syslog
4262  *
4263  * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4264  */
4265 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4266                                 u32 num_events, u32 mode)
4267 {
4268         u32 i;
4269         u32 base;       /* SRAM byte address of event log header */
4270         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4271         u32 ptr;        /* SRAM byte address of log data */
4272         u32 ev, time, data; /* event log data */
4273
4274         if (num_events == 0)
4275                 return;
4276
4277         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4278
4279         if (mode == 0)
4280                 event_size = 2 * sizeof(u32);
4281         else
4282                 event_size = 3 * sizeof(u32);
4283
4284         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4285
4286         /* "time" is actually "data" for mode 0 (no timestamp).
4287          * place event id # at far right for easier visual parsing. */
4288         for (i = 0; i < num_events; i++) {
4289                 ev = iwl3945_read_targ_mem(priv, ptr);
4290                 ptr += sizeof(u32);
4291                 time = iwl3945_read_targ_mem(priv, ptr);
4292                 ptr += sizeof(u32);
4293                 if (mode == 0)
4294                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4295                 else {
4296                         data = iwl3945_read_targ_mem(priv, ptr);
4297                         ptr += sizeof(u32);
4298                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4299                 }
4300         }
4301 }
4302
4303 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4304 {
4305         int rc;
4306         u32 base;       /* SRAM byte address of event log header */
4307         u32 capacity;   /* event log capacity in # entries */
4308         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4309         u32 num_wraps;  /* # times uCode wrapped to top of log */
4310         u32 next_entry; /* index of next entry to be written by uCode */
4311         u32 size;       /* # entries that we'll print */
4312
4313         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4314         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4315                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4316                 return;
4317         }
4318
4319         rc = iwl3945_grab_nic_access(priv);
4320         if (rc) {
4321                 IWL_WARNING("Can not read from adapter at this time.\n");
4322                 return;
4323         }
4324
4325         /* event log header */
4326         capacity = iwl3945_read_targ_mem(priv, base);
4327         mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4328         num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4329         next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4330
4331         size = num_wraps ? capacity : next_entry;
4332
4333         /* bail out if nothing in log */
4334         if (size == 0) {
4335                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4336                 iwl3945_release_nic_access(priv);
4337                 return;
4338         }
4339
4340         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4341                   size, num_wraps);
4342
4343         /* if uCode has wrapped back to top of log, start at the oldest entry,
4344          * i.e the next one that uCode would fill. */
4345         if (num_wraps)
4346                 iwl3945_print_event_log(priv, next_entry,
4347                                     capacity - next_entry, mode);
4348
4349         /* (then/else) start at top of log */
4350         iwl3945_print_event_log(priv, 0, next_entry, mode);
4351
4352         iwl3945_release_nic_access(priv);
4353 }
4354
4355 /**
4356  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4357  */
4358 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4359 {
4360         /* Set the FW error flag -- cleared on iwl3945_down */
4361         set_bit(STATUS_FW_ERROR, &priv->status);
4362
4363         /* Cancel currently queued command. */
4364         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4365
4366 #ifdef CONFIG_IWL3945_DEBUG
4367         if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4368                 iwl3945_dump_nic_error_log(priv);
4369                 iwl3945_dump_nic_event_log(priv);
4370                 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
4371         }
4372 #endif
4373
4374         wake_up_interruptible(&priv->wait_command_queue);
4375
4376         /* Keep the restart process from trying to send host
4377          * commands by clearing the INIT status bit */
4378         clear_bit(STATUS_READY, &priv->status);
4379
4380         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4381                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4382                           "Restarting adapter due to uCode error.\n");
4383
4384                 if (iwl3945_is_associated(priv)) {
4385                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4386                                sizeof(priv->recovery_rxon));
4387                         priv->error_recovering = 1;
4388                 }
4389                 queue_work(priv->workqueue, &priv->restart);
4390         }
4391 }
4392
4393 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4394 {
4395         unsigned long flags;
4396
4397         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4398                sizeof(priv->staging_rxon));
4399         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4400         iwl3945_commit_rxon(priv);
4401
4402         iwl3945_add_station(priv, priv->bssid, 1, 0);
4403
4404         spin_lock_irqsave(&priv->lock, flags);
4405         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4406         priv->error_recovering = 0;
4407         spin_unlock_irqrestore(&priv->lock, flags);
4408 }
4409
4410 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4411 {
4412         u32 inta, handled = 0;
4413         u32 inta_fh;
4414         unsigned long flags;
4415 #ifdef CONFIG_IWL3945_DEBUG
4416         u32 inta_mask;
4417 #endif
4418
4419         spin_lock_irqsave(&priv->lock, flags);
4420
4421         /* Ack/clear/reset pending uCode interrupts.
4422          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4423          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4424         inta = iwl3945_read32(priv, CSR_INT);
4425         iwl3945_write32(priv, CSR_INT, inta);
4426
4427         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4428          * Any new interrupts that happen after this, either while we're
4429          * in this tasklet, or later, will show up in next ISR/tasklet. */
4430         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4431         iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4432
4433 #ifdef CONFIG_IWL3945_DEBUG
4434         if (iwl3945_debug_level & IWL_DL_ISR) {
4435                 /* just for debug */
4436                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4437                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4438                               inta, inta_mask, inta_fh);
4439         }
4440 #endif
4441
4442         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4443          * atomic, make sure that inta covers all the interrupts that
4444          * we've discovered, even if FH interrupt came in just after
4445          * reading CSR_INT. */
4446         if (inta_fh & CSR39_FH_INT_RX_MASK)
4447                 inta |= CSR_INT_BIT_FH_RX;
4448         if (inta_fh & CSR39_FH_INT_TX_MASK)
4449                 inta |= CSR_INT_BIT_FH_TX;
4450
4451         /* Now service all interrupt bits discovered above. */
4452         if (inta & CSR_INT_BIT_HW_ERR) {
4453                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4454
4455                 /* Tell the device to stop sending interrupts */
4456                 iwl3945_disable_interrupts(priv);
4457
4458                 iwl3945_irq_handle_error(priv);
4459
4460                 handled |= CSR_INT_BIT_HW_ERR;
4461
4462                 spin_unlock_irqrestore(&priv->lock, flags);
4463
4464                 return;
4465         }
4466
4467 #ifdef CONFIG_IWL3945_DEBUG
4468         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4469                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4470                 if (inta & CSR_INT_BIT_SCD)
4471                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4472                                       "the frame/frames.\n");
4473
4474                 /* Alive notification via Rx interrupt will do the real work */
4475                 if (inta & CSR_INT_BIT_ALIVE)
4476                         IWL_DEBUG_ISR("Alive interrupt\n");
4477         }
4478 #endif
4479         /* Safely ignore these bits for debug checks below */
4480         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4481
4482         /* HW RF KILL switch toggled (4965 only) */
4483         if (inta & CSR_INT_BIT_RF_KILL) {
4484                 int hw_rf_kill = 0;
4485                 if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
4486                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4487                         hw_rf_kill = 1;
4488
4489                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4490                                 "RF_KILL bit toggled to %s.\n",
4491                                 hw_rf_kill ? "disable radio":"enable radio");
4492
4493                 /* Queue restart only if RF_KILL switch was set to "kill"
4494                  *   when we loaded driver, and is now set to "enable".
4495                  * After we're Alive, RF_KILL gets handled by
4496                  *   iwl3945_rx_card_state_notif() */
4497                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4498                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4499                         queue_work(priv->workqueue, &priv->restart);
4500                 }
4501
4502                 handled |= CSR_INT_BIT_RF_KILL;
4503         }
4504
4505         /* Chip got too hot and stopped itself (4965 only) */
4506         if (inta & CSR_INT_BIT_CT_KILL) {
4507                 IWL_ERROR("Microcode CT kill error detected.\n");
4508                 handled |= CSR_INT_BIT_CT_KILL;
4509         }
4510
4511         /* Error detected by uCode */
4512         if (inta & CSR_INT_BIT_SW_ERR) {
4513                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4514                           inta);
4515                 iwl3945_irq_handle_error(priv);
4516                 handled |= CSR_INT_BIT_SW_ERR;
4517         }
4518
4519         /* uCode wakes up after power-down sleep */
4520         if (inta & CSR_INT_BIT_WAKEUP) {
4521                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4522                 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4523                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4524                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4525                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4526                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4527                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4528                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4529
4530                 handled |= CSR_INT_BIT_WAKEUP;
4531         }
4532
4533         /* All uCode command responses, including Tx command responses,
4534          * Rx "responses" (frame-received notification), and other
4535          * notifications from uCode come through here*/
4536         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4537                 iwl3945_rx_handle(priv);
4538                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4539         }
4540
4541         if (inta & CSR_INT_BIT_FH_TX) {
4542                 IWL_DEBUG_ISR("Tx interrupt\n");
4543
4544                 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4545                 if (!iwl3945_grab_nic_access(priv)) {
4546                         iwl3945_write_direct32(priv,
4547                                              FH_TCSR_CREDIT
4548                                              (ALM_FH_SRVC_CHNL), 0x0);
4549                         iwl3945_release_nic_access(priv);
4550                 }
4551                 handled |= CSR_INT_BIT_FH_TX;
4552         }
4553
4554         if (inta & ~handled)
4555                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4556
4557         if (inta & ~CSR_INI_SET_MASK) {
4558                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4559                          inta & ~CSR_INI_SET_MASK);
4560                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4561         }
4562
4563         /* Re-enable all interrupts */
4564         /* only Re-enable if disabled by irq */
4565         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4566                 iwl3945_enable_interrupts(priv);
4567
4568 #ifdef CONFIG_IWL3945_DEBUG
4569         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4570                 inta = iwl3945_read32(priv, CSR_INT);
4571                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4572                 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4573                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4574                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4575         }
4576 #endif
4577         spin_unlock_irqrestore(&priv->lock, flags);
4578 }
4579
4580 static irqreturn_t iwl3945_isr(int irq, void *data)
4581 {
4582         struct iwl3945_priv *priv = data;
4583         u32 inta, inta_mask;
4584         u32 inta_fh;
4585         if (!priv)
4586                 return IRQ_NONE;
4587
4588         spin_lock(&priv->lock);
4589
4590         /* Disable (but don't clear!) interrupts here to avoid
4591          *    back-to-back ISRs and sporadic interrupts from our NIC.
4592          * If we have something to service, the tasklet will re-enable ints.
4593          * If we *don't* have something, we'll re-enable before leaving here. */
4594         inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
4595         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4596
4597         /* Discover which interrupts are active/pending */
4598         inta = iwl3945_read32(priv, CSR_INT);
4599         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4600
4601         /* Ignore interrupt if there's nothing in NIC to service.
4602          * This may be due to IRQ shared with another device,
4603          * or due to sporadic interrupts thrown from our NIC. */
4604         if (!inta && !inta_fh) {
4605                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4606                 goto none;
4607         }
4608
4609         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4610                 /* Hardware disappeared */
4611                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4612                 goto unplugged;
4613         }
4614
4615         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4616                       inta, inta_mask, inta_fh);
4617
4618         inta &= ~CSR_INT_BIT_SCD;
4619
4620         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4621         if (likely(inta || inta_fh))
4622                 tasklet_schedule(&priv->irq_tasklet);
4623 unplugged:
4624         spin_unlock(&priv->lock);
4625
4626         return IRQ_HANDLED;
4627
4628  none:
4629         /* re-enable interrupts here since we don't have anything to service. */
4630         /* only Re-enable if disabled by irq */
4631         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4632                 iwl3945_enable_interrupts(priv);
4633         spin_unlock(&priv->lock);
4634         return IRQ_NONE;
4635 }
4636
4637 /************************** EEPROM BANDS ****************************
4638  *
4639  * The iwl3945_eeprom_band definitions below provide the mapping from the
4640  * EEPROM contents to the specific channel number supported for each
4641  * band.
4642  *
4643  * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
4644  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4645  * The specific geography and calibration information for that channel
4646  * is contained in the eeprom map itself.
4647  *
4648  * During init, we copy the eeprom information and channel map
4649  * information into priv->channel_info_24/52 and priv->channel_map_24/52
4650  *
4651  * channel_map_24/52 provides the index in the channel_info array for a
4652  * given channel.  We have to have two separate maps as there is channel
4653  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4654  * band_2
4655  *
4656  * A value of 0xff stored in the channel_map indicates that the channel
4657  * is not supported by the hardware at all.
4658  *
4659  * A value of 0xfe in the channel_map indicates that the channel is not
4660  * valid for Tx with the current hardware.  This means that
4661  * while the system can tune and receive on a given channel, it may not
4662  * be able to associate or transmit any frames on that
4663  * channel.  There is no corresponding channel information for that
4664  * entry.
4665  *
4666  *********************************************************************/
4667
4668 /* 2.4 GHz */
4669 static const u8 iwl3945_eeprom_band_1[14] = {
4670         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4671 };
4672
4673 /* 5.2 GHz bands */
4674 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
4675         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4676 };
4677
4678 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
4679         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4680 };
4681
4682 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
4683         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4684 };
4685
4686 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
4687         145, 149, 153, 157, 161, 165
4688 };
4689
4690 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
4691                                     int *eeprom_ch_count,
4692                                     const struct iwl3945_eeprom_channel
4693                                     **eeprom_ch_info,
4694                                     const u8 **eeprom_ch_index)
4695 {
4696         switch (band) {
4697         case 1:         /* 2.4GHz band */
4698                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4699                 *eeprom_ch_info = priv->eeprom.band_1_channels;
4700                 *eeprom_ch_index = iwl3945_eeprom_band_1;
4701                 break;
4702         case 2:         /* 4.9GHz band */
4703                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4704                 *eeprom_ch_info = priv->eeprom.band_2_channels;
4705                 *eeprom_ch_index = iwl3945_eeprom_band_2;
4706                 break;
4707         case 3:         /* 5.2GHz band */
4708                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4709                 *eeprom_ch_info = priv->eeprom.band_3_channels;
4710                 *eeprom_ch_index = iwl3945_eeprom_band_3;
4711                 break;
4712         case 4:         /* 5.5GHz band */
4713                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4714                 *eeprom_ch_info = priv->eeprom.band_4_channels;
4715                 *eeprom_ch_index = iwl3945_eeprom_band_4;
4716                 break;
4717         case 5:         /* 5.7GHz band */
4718                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4719                 *eeprom_ch_info = priv->eeprom.band_5_channels;
4720                 *eeprom_ch_index = iwl3945_eeprom_band_5;
4721                 break;
4722         default:
4723                 BUG();
4724                 return;
4725         }
4726 }
4727
4728 /**
4729  * iwl3945_get_channel_info - Find driver's private channel info
4730  *
4731  * Based on band and channel number.
4732  */
4733 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4734                                                     enum ieee80211_band band, u16 channel)
4735 {
4736         int i;
4737
4738         switch (band) {
4739         case IEEE80211_BAND_5GHZ:
4740                 for (i = 14; i < priv->channel_count; i++) {
4741                         if (priv->channel_info[i].channel == channel)
4742                                 return &priv->channel_info[i];
4743                 }
4744                 break;
4745
4746         case IEEE80211_BAND_2GHZ:
4747                 if (channel >= 1 && channel <= 14)
4748                         return &priv->channel_info[channel - 1];
4749                 break;
4750         case IEEE80211_NUM_BANDS:
4751                 WARN_ON(1);
4752         }
4753
4754         return NULL;
4755 }
4756
4757 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4758                             ? # x " " : "")
4759
4760 /**
4761  * iwl3945_init_channel_map - Set up driver's info for all possible channels
4762  */
4763 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
4764 {
4765         int eeprom_ch_count = 0;
4766         const u8 *eeprom_ch_index = NULL;
4767         const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
4768         int band, ch;
4769         struct iwl3945_channel_info *ch_info;
4770
4771         if (priv->channel_count) {
4772                 IWL_DEBUG_INFO("Channel map already initialized.\n");
4773                 return 0;
4774         }
4775
4776         if (priv->eeprom.version < 0x2f) {
4777                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
4778                             priv->eeprom.version);
4779                 return -EINVAL;
4780         }
4781
4782         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4783
4784         priv->channel_count =
4785             ARRAY_SIZE(iwl3945_eeprom_band_1) +
4786             ARRAY_SIZE(iwl3945_eeprom_band_2) +
4787             ARRAY_SIZE(iwl3945_eeprom_band_3) +
4788             ARRAY_SIZE(iwl3945_eeprom_band_4) +
4789             ARRAY_SIZE(iwl3945_eeprom_band_5);
4790
4791         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4792
4793         priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
4794                                      priv->channel_count, GFP_KERNEL);
4795         if (!priv->channel_info) {
4796                 IWL_ERROR("Could not allocate channel_info\n");
4797                 priv->channel_count = 0;
4798                 return -ENOMEM;
4799         }
4800
4801         ch_info = priv->channel_info;
4802
4803         /* Loop through the 5 EEPROM bands adding them in order to the
4804          * channel map we maintain (that contains additional information than
4805          * what just in the EEPROM) */
4806         for (band = 1; band <= 5; band++) {
4807
4808                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4809                                         &eeprom_ch_info, &eeprom_ch_index);
4810
4811                 /* Loop through each band adding each of the channels */
4812                 for (ch = 0; ch < eeprom_ch_count; ch++) {
4813                         ch_info->channel = eeprom_ch_index[ch];
4814                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4815                             IEEE80211_BAND_5GHZ;
4816
4817                         /* permanently store EEPROM's channel regulatory flags
4818                          *   and max power in channel info database. */
4819                         ch_info->eeprom = eeprom_ch_info[ch];
4820
4821                         /* Copy the run-time flags so they are there even on
4822                          * invalid channels */
4823                         ch_info->flags = eeprom_ch_info[ch].flags;
4824
4825                         if (!(is_channel_valid(ch_info))) {
4826                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4827                                                "No traffic\n",
4828                                                ch_info->channel,
4829                                                ch_info->flags,
4830                                                is_channel_a_band(ch_info) ?
4831                                                "5.2" : "2.4");
4832                                 ch_info++;
4833                                 continue;
4834                         }
4835
4836                         /* Initialize regulatory-based run-time data */
4837                         ch_info->max_power_avg = ch_info->curr_txpow =
4838                             eeprom_ch_info[ch].max_power_avg;
4839                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4840                         ch_info->min_power = 0;
4841
4842                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
4843                                        " %ddBm): Ad-Hoc %ssupported\n",
4844                                        ch_info->channel,
4845                                        is_channel_a_band(ch_info) ?
4846                                        "5.2" : "2.4",
4847                                        CHECK_AND_PRINT(VALID),
4848                                        CHECK_AND_PRINT(IBSS),
4849                                        CHECK_AND_PRINT(ACTIVE),
4850                                        CHECK_AND_PRINT(RADAR),
4851                                        CHECK_AND_PRINT(WIDE),
4852                                        CHECK_AND_PRINT(DFS),
4853                                        eeprom_ch_info[ch].flags,
4854                                        eeprom_ch_info[ch].max_power_avg,
4855                                        ((eeprom_ch_info[ch].
4856                                          flags & EEPROM_CHANNEL_IBSS)
4857                                         && !(eeprom_ch_info[ch].
4858                                              flags & EEPROM_CHANNEL_RADAR))
4859                                        ? "" : "not ");
4860
4861                         /* Set the user_txpower_limit to the highest power
4862                          * supported by any channel */
4863                         if (eeprom_ch_info[ch].max_power_avg >
4864                             priv->user_txpower_limit)
4865                                 priv->user_txpower_limit =
4866                                     eeprom_ch_info[ch].max_power_avg;
4867
4868                         ch_info++;
4869                 }
4870         }
4871
4872         /* Set up txpower settings in driver for all channels */
4873         if (iwl3945_txpower_set_from_eeprom(priv))
4874                 return -EIO;
4875
4876         return 0;
4877 }
4878
4879 /*
4880  * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4881  */
4882 static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
4883 {
4884         kfree(priv->channel_info);
4885         priv->channel_count = 0;
4886 }
4887
4888 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4889  * sending probe req.  This should be set long enough to hear probe responses
4890  * from more than one AP.  */
4891 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
4892 #define IWL_ACTIVE_DWELL_TIME_52    (10)
4893
4894 /* For faster active scanning, scan will move to the next channel if fewer than
4895  * PLCP_QUIET_THRESH packets are heard on this channel within
4896  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4897  * time if it's a quiet channel (nothing responded to our probe, and there's
4898  * no other traffic).
4899  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4900 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4901 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
4902
4903 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4904  * Must be set longer than active dwell time.
4905  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4906 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4907 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4908 #define IWL_PASSIVE_DWELL_BASE      (100)
4909 #define IWL_CHANNEL_TUNE_TIME       5
4910
4911 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
4912                                                 enum ieee80211_band band)
4913 {
4914         if (band == IEEE80211_BAND_5GHZ)
4915                 return IWL_ACTIVE_DWELL_TIME_52;
4916         else
4917                 return IWL_ACTIVE_DWELL_TIME_24;
4918 }
4919
4920 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
4921                                           enum ieee80211_band band)
4922 {
4923         u16 active = iwl3945_get_active_dwell_time(priv, band);
4924         u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4925             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4926             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4927
4928         if (iwl3945_is_associated(priv)) {
4929                 /* If we're associated, we clamp the maximum passive
4930                  * dwell time to be 98% of the beacon interval (minus
4931                  * 2 * channel tune time) */
4932                 passive = priv->beacon_int;
4933                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4934                         passive = IWL_PASSIVE_DWELL_BASE;
4935                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4936         }
4937
4938         if (passive <= active)
4939                 passive = active + 1;
4940
4941         return passive;
4942 }
4943
4944 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
4945                                          enum ieee80211_band band,
4946                                      u8 is_active, u8 direct_mask,
4947                                      struct iwl3945_scan_channel *scan_ch)
4948 {
4949         const struct ieee80211_channel *channels = NULL;
4950         const struct ieee80211_supported_band *sband;
4951         const struct iwl3945_channel_info *ch_info;
4952         u16 passive_dwell = 0;
4953         u16 active_dwell = 0;
4954         int added, i;
4955
4956         sband = iwl3945_get_band(priv, band);
4957         if (!sband)
4958                 return 0;
4959
4960         channels = sband->channels;
4961
4962         active_dwell = iwl3945_get_active_dwell_time(priv, band);
4963         passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4964
4965         for (i = 0, added = 0; i < sband->n_channels; i++) {
4966                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4967                         continue;
4968
4969                 scan_ch->channel = channels[i].hw_value;
4970
4971                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4972                 if (!is_channel_valid(ch_info)) {
4973                         IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4974                                        scan_ch->channel);
4975                         continue;
4976                 }
4977
4978                 if (!is_active || is_channel_passive(ch_info) ||
4979                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4980                         scan_ch->type = 0;      /* passive */
4981                 else
4982                         scan_ch->type = 1;      /* active */
4983
4984                 if (scan_ch->type & 1)
4985                         scan_ch->type |= (direct_mask << 1);
4986
4987                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4988                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4989
4990                 /* Set txpower levels to defaults */
4991                 scan_ch->tpc.dsp_atten = 110;
4992                 /* scan_pwr_info->tpc.dsp_atten; */
4993
4994                 /*scan_pwr_info->tpc.tx_gain; */
4995                 if (band == IEEE80211_BAND_5GHZ)
4996                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4997                 else {
4998                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4999                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5000                          * power level:
5001                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5002                          */
5003                 }
5004
5005                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5006                                scan_ch->channel,
5007                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5008                                (scan_ch->type & 1) ?
5009                                active_dwell : passive_dwell);
5010
5011                 scan_ch++;
5012                 added++;
5013         }
5014
5015         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5016         return added;
5017 }
5018
5019 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
5020                               struct ieee80211_rate *rates)
5021 {
5022         int i;
5023
5024         for (i = 0; i < IWL_RATE_COUNT; i++) {
5025                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
5026                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5027                 rates[i].hw_value_short = i;
5028                 rates[i].flags = 0;
5029                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5030                         /*
5031                          * If CCK != 1M then set short preamble rate flag.
5032                          */
5033                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5034                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5035                 }
5036         }
5037 }
5038
5039 /**
5040  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
5041  */
5042 static int iwl3945_init_geos(struct iwl3945_priv *priv)
5043 {
5044         struct iwl3945_channel_info *ch;
5045         struct ieee80211_supported_band *sband;
5046         struct ieee80211_channel *channels;
5047         struct ieee80211_channel *geo_ch;
5048         struct ieee80211_rate *rates;
5049         int i = 0;
5050
5051         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5052             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5053                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5054                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5055                 return 0;
5056         }
5057
5058         channels = kzalloc(sizeof(struct ieee80211_channel) *
5059                            priv->channel_count, GFP_KERNEL);
5060         if (!channels)
5061                 return -ENOMEM;
5062
5063         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5064                         GFP_KERNEL);
5065         if (!rates) {
5066                 kfree(channels);
5067                 return -ENOMEM;
5068         }
5069
5070         /* 5.2GHz channels start after the 2.4GHz channels */
5071         sband = &priv->bands[IEEE80211_BAND_5GHZ];
5072         sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
5073         /* just OFDM */
5074         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5075         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5076
5077         sband = &priv->bands[IEEE80211_BAND_2GHZ];
5078         sband->channels = channels;
5079         /* OFDM & CCK */
5080         sband->bitrates = rates;
5081         sband->n_bitrates = IWL_RATE_COUNT;
5082
5083         priv->ieee_channels = channels;
5084         priv->ieee_rates = rates;
5085
5086         iwl3945_init_hw_rates(priv, rates);
5087
5088         for (i = 0;  i < priv->channel_count; i++) {
5089                 ch = &priv->channel_info[i];
5090
5091                 /* FIXME: might be removed if scan is OK*/
5092                 if (!is_channel_valid(ch))
5093                         continue;
5094
5095                 if (is_channel_a_band(ch))
5096                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
5097                 else
5098                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
5099
5100                 geo_ch = &sband->channels[sband->n_channels++];
5101
5102                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5103                 geo_ch->max_power = ch->max_power_avg;
5104                 geo_ch->max_antenna_gain = 0xff;
5105                 geo_ch->hw_value = ch->channel;
5106
5107                 if (is_channel_valid(ch)) {
5108                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5109                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5110
5111                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5112                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5113
5114                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5115                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5116
5117                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5118                                 priv->max_channel_txpower_limit =
5119                                     ch->max_power_avg;
5120                 } else {
5121                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5122                 }
5123
5124                 /* Save flags for reg domain usage */
5125                 geo_ch->orig_flags = geo_ch->flags;
5126
5127                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5128                                 ch->channel, geo_ch->center_freq,
5129                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
5130                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5131                                 "restricted" : "valid",
5132                                  geo_ch->flags);
5133         }
5134
5135         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
5136              priv->cfg->sku & IWL_SKU_A) {
5137                 printk(KERN_INFO DRV_NAME
5138                        ": Incorrectly detected BG card as ABG.  Please send "
5139                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5140                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5141                  priv->cfg->sku &= ~IWL_SKU_A;
5142         }
5143
5144         printk(KERN_INFO DRV_NAME
5145                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5146                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5147                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5148
5149         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
5150                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
5151                         &priv->bands[IEEE80211_BAND_2GHZ];
5152         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
5153                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
5154                         &priv->bands[IEEE80211_BAND_5GHZ];
5155
5156         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5157
5158         return 0;
5159 }
5160
5161 /*
5162  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
5163  */
5164 static void iwl3945_free_geos(struct iwl3945_priv *priv)
5165 {
5166         kfree(priv->ieee_channels);
5167         kfree(priv->ieee_rates);
5168         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5169 }
5170
5171 /******************************************************************************
5172  *
5173  * uCode download functions
5174  *
5175  ******************************************************************************/
5176
5177 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
5178 {
5179         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5180         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5181         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5182         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5183         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5184         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5185 }
5186
5187 /**
5188  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5189  *     looking at all data.
5190  */
5191 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
5192 {
5193         u32 val;
5194         u32 save_len = len;
5195         int rc = 0;
5196         u32 errcnt;
5197
5198         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5199
5200         rc = iwl3945_grab_nic_access(priv);
5201         if (rc)
5202                 return rc;
5203
5204         iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5205
5206         errcnt = 0;
5207         for (; len > 0; len -= sizeof(u32), image++) {
5208                 /* read data comes through single port, auto-incr addr */
5209                 /* NOTE: Use the debugless read so we don't flood kernel log
5210                  * if IWL_DL_IO is set */
5211                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5212                 if (val != le32_to_cpu(*image)) {
5213                         IWL_ERROR("uCode INST section is invalid at "
5214                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5215                                   save_len - len, val, le32_to_cpu(*image));
5216                         rc = -EIO;
5217                         errcnt++;
5218                         if (errcnt >= 20)
5219                                 break;
5220                 }
5221         }
5222
5223         iwl3945_release_nic_access(priv);
5224
5225         if (!errcnt)
5226                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5227
5228         return rc;
5229 }
5230
5231
5232 /**
5233  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5234  *   using sample data 100 bytes apart.  If these sample points are good,
5235  *   it's a pretty good bet that everything between them is good, too.
5236  */
5237 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5238 {
5239         u32 val;
5240         int rc = 0;
5241         u32 errcnt = 0;
5242         u32 i;
5243
5244         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5245
5246         rc = iwl3945_grab_nic_access(priv);
5247         if (rc)
5248                 return rc;
5249
5250         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5251                 /* read data comes through single port, auto-incr addr */
5252                 /* NOTE: Use the debugless read so we don't flood kernel log
5253                  * if IWL_DL_IO is set */
5254                 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5255                         i + RTC_INST_LOWER_BOUND);
5256                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5257                 if (val != le32_to_cpu(*image)) {
5258 #if 0 /* Enable this if you want to see details */
5259                         IWL_ERROR("uCode INST section is invalid at "
5260                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5261                                   i, val, *image);
5262 #endif
5263                         rc = -EIO;
5264                         errcnt++;
5265                         if (errcnt >= 3)
5266                                 break;
5267                 }
5268         }
5269
5270         iwl3945_release_nic_access(priv);
5271
5272         return rc;
5273 }
5274
5275
5276 /**
5277  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5278  *    and verify its contents
5279  */
5280 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5281 {
5282         __le32 *image;
5283         u32 len;
5284         int rc = 0;
5285
5286         /* Try bootstrap */
5287         image = (__le32 *)priv->ucode_boot.v_addr;
5288         len = priv->ucode_boot.len;
5289         rc = iwl3945_verify_inst_sparse(priv, image, len);
5290         if (rc == 0) {
5291                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5292                 return 0;
5293         }
5294
5295         /* Try initialize */
5296         image = (__le32 *)priv->ucode_init.v_addr;
5297         len = priv->ucode_init.len;
5298         rc = iwl3945_verify_inst_sparse(priv, image, len);
5299         if (rc == 0) {
5300                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5301                 return 0;
5302         }
5303
5304         /* Try runtime/protocol */
5305         image = (__le32 *)priv->ucode_code.v_addr;
5306         len = priv->ucode_code.len;
5307         rc = iwl3945_verify_inst_sparse(priv, image, len);
5308         if (rc == 0) {
5309                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5310                 return 0;
5311         }
5312
5313         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5314
5315         /* Since nothing seems to match, show first several data entries in
5316          * instruction SRAM, so maybe visual inspection will give a clue.
5317          * Selection of bootstrap image (vs. other images) is arbitrary. */
5318         image = (__le32 *)priv->ucode_boot.v_addr;
5319         len = priv->ucode_boot.len;
5320         rc = iwl3945_verify_inst_full(priv, image, len);
5321
5322         return rc;
5323 }
5324
5325
5326 /* check contents of special bootstrap uCode SRAM */
5327 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5328 {
5329         __le32 *image = priv->ucode_boot.v_addr;
5330         u32 len = priv->ucode_boot.len;
5331         u32 reg;
5332         u32 val;
5333
5334         IWL_DEBUG_INFO("Begin verify bsm\n");
5335
5336         /* verify BSM SRAM contents */
5337         val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5338         for (reg = BSM_SRAM_LOWER_BOUND;
5339              reg < BSM_SRAM_LOWER_BOUND + len;
5340              reg += sizeof(u32), image ++) {
5341                 val = iwl3945_read_prph(priv, reg);
5342                 if (val != le32_to_cpu(*image)) {
5343                         IWL_ERROR("BSM uCode verification failed at "
5344                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5345                                   BSM_SRAM_LOWER_BOUND,
5346                                   reg - BSM_SRAM_LOWER_BOUND, len,
5347                                   val, le32_to_cpu(*image));
5348                         return -EIO;
5349                 }
5350         }
5351
5352         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5353
5354         return 0;
5355 }
5356
5357 /**
5358  * iwl3945_load_bsm - Load bootstrap instructions
5359  *
5360  * BSM operation:
5361  *
5362  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5363  * in special SRAM that does not power down during RFKILL.  When powering back
5364  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5365  * the bootstrap program into the on-board processor, and starts it.
5366  *
5367  * The bootstrap program loads (via DMA) instructions and data for a new
5368  * program from host DRAM locations indicated by the host driver in the
5369  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5370  * automatically.
5371  *
5372  * When initializing the NIC, the host driver points the BSM to the
5373  * "initialize" uCode image.  This uCode sets up some internal data, then
5374  * notifies host via "initialize alive" that it is complete.
5375  *
5376  * The host then replaces the BSM_DRAM_* pointer values to point to the
5377  * normal runtime uCode instructions and a backup uCode data cache buffer
5378  * (filled initially with starting data values for the on-board processor),
5379  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5380  * which begins normal operation.
5381  *
5382  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5383  * the backup data cache in DRAM before SRAM is powered down.
5384  *
5385  * When powering back up, the BSM loads the bootstrap program.  This reloads
5386  * the runtime uCode instructions and the backup data cache into SRAM,
5387  * and re-launches the runtime uCode from where it left off.
5388  */
5389 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5390 {
5391         __le32 *image = priv->ucode_boot.v_addr;
5392         u32 len = priv->ucode_boot.len;
5393         dma_addr_t pinst;
5394         dma_addr_t pdata;
5395         u32 inst_len;
5396         u32 data_len;
5397         int rc;
5398         int i;
5399         u32 done;
5400         u32 reg_offset;
5401
5402         IWL_DEBUG_INFO("Begin load bsm\n");
5403
5404         /* make sure bootstrap program is no larger than BSM's SRAM size */
5405         if (len > IWL_MAX_BSM_SIZE)
5406                 return -EINVAL;
5407
5408         /* Tell bootstrap uCode where to find the "Initialize" uCode
5409          *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5410          * NOTE:  iwl3945_initialize_alive_start() will replace these values,
5411          *        after the "initialize" uCode has run, to point to
5412          *        runtime/protocol instructions and backup data cache. */
5413         pinst = priv->ucode_init.p_addr;
5414         pdata = priv->ucode_init_data.p_addr;
5415         inst_len = priv->ucode_init.len;
5416         data_len = priv->ucode_init_data.len;
5417
5418         rc = iwl3945_grab_nic_access(priv);
5419         if (rc)
5420                 return rc;
5421
5422         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5423         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5424         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5425         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5426
5427         /* Fill BSM memory with bootstrap instructions */
5428         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5429              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5430              reg_offset += sizeof(u32), image++)
5431                 _iwl3945_write_prph(priv, reg_offset,
5432                                           le32_to_cpu(*image));
5433
5434         rc = iwl3945_verify_bsm(priv);
5435         if (rc) {
5436                 iwl3945_release_nic_access(priv);
5437                 return rc;
5438         }
5439
5440         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5441         iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5442         iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5443                                  RTC_INST_LOWER_BOUND);
5444         iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5445
5446         /* Load bootstrap code into instruction SRAM now,
5447          *   to prepare to load "initialize" uCode */
5448         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5449                 BSM_WR_CTRL_REG_BIT_START);
5450
5451         /* Wait for load of bootstrap uCode to finish */
5452         for (i = 0; i < 100; i++) {
5453                 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5454                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5455                         break;
5456                 udelay(10);
5457         }
5458         if (i < 100)
5459                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5460         else {
5461                 IWL_ERROR("BSM write did not complete!\n");
5462                 return -EIO;
5463         }
5464
5465         /* Enable future boot loads whenever power management unit triggers it
5466          *   (e.g. when powering back up after power-save shutdown) */
5467         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5468                 BSM_WR_CTRL_REG_BIT_START_EN);
5469
5470         iwl3945_release_nic_access(priv);
5471
5472         return 0;
5473 }
5474
5475 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5476 {
5477         /* Remove all resets to allow NIC to operate */
5478         iwl3945_write32(priv, CSR_RESET, 0);
5479 }
5480
5481 /**
5482  * iwl3945_read_ucode - Read uCode images from disk file.
5483  *
5484  * Copy into buffers for card to fetch via bus-mastering
5485  */
5486 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5487 {
5488         struct iwl3945_ucode *ucode;
5489         int ret = 0;
5490         const struct firmware *ucode_raw;
5491         /* firmware file name contains uCode/driver compatibility version */
5492         const char *name = priv->cfg->fw_name;
5493         u8 *src;
5494         size_t len;
5495         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5496
5497         /* Ask kernel firmware_class module to get the boot firmware off disk.
5498          * request_firmware() is synchronous, file is in memory on return. */
5499         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5500         if (ret < 0) {
5501                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5502                                 name, ret);
5503                 goto error;
5504         }
5505
5506         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5507                        name, ucode_raw->size);
5508
5509         /* Make sure that we got at least our header! */
5510         if (ucode_raw->size < sizeof(*ucode)) {
5511                 IWL_ERROR("File size way too small!\n");
5512                 ret = -EINVAL;
5513                 goto err_release;
5514         }
5515
5516         /* Data from ucode file:  header followed by uCode images */
5517         ucode = (void *)ucode_raw->data;
5518
5519         ver = le32_to_cpu(ucode->ver);
5520         inst_size = le32_to_cpu(ucode->inst_size);
5521         data_size = le32_to_cpu(ucode->data_size);
5522         init_size = le32_to_cpu(ucode->init_size);
5523         init_data_size = le32_to_cpu(ucode->init_data_size);
5524         boot_size = le32_to_cpu(ucode->boot_size);
5525
5526         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5527         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5528         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5529         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5530         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5531         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5532
5533         /* Verify size of file vs. image size info in file's header */
5534         if (ucode_raw->size < sizeof(*ucode) +
5535                 inst_size + data_size + init_size +
5536                 init_data_size + boot_size) {
5537
5538                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5539                                (int)ucode_raw->size);
5540                 ret = -EINVAL;
5541                 goto err_release;
5542         }
5543
5544         /* Verify that uCode images will fit in card's SRAM */
5545         if (inst_size > IWL_MAX_INST_SIZE) {
5546                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5547                                inst_size);
5548                 ret = -EINVAL;
5549                 goto err_release;
5550         }
5551
5552         if (data_size > IWL_MAX_DATA_SIZE) {
5553                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5554                                data_size);
5555                 ret = -EINVAL;
5556                 goto err_release;
5557         }
5558         if (init_size > IWL_MAX_INST_SIZE) {
5559                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5560                                 init_size);
5561                 ret = -EINVAL;
5562                 goto err_release;
5563         }
5564         if (init_data_size > IWL_MAX_DATA_SIZE) {
5565                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5566                                 init_data_size);
5567                 ret = -EINVAL;
5568                 goto err_release;
5569         }
5570         if (boot_size > IWL_MAX_BSM_SIZE) {
5571                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5572                                 boot_size);
5573                 ret = -EINVAL;
5574                 goto err_release;
5575         }
5576
5577         /* Allocate ucode buffers for card's bus-master loading ... */
5578
5579         /* Runtime instructions and 2 copies of data:
5580          * 1) unmodified from disk
5581          * 2) backup cache for save/restore during power-downs */
5582         priv->ucode_code.len = inst_size;
5583         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5584
5585         priv->ucode_data.len = data_size;
5586         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5587
5588         priv->ucode_data_backup.len = data_size;
5589         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5590
5591         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5592             !priv->ucode_data_backup.v_addr)
5593                 goto err_pci_alloc;
5594
5595         /* Initialization instructions and data */
5596         if (init_size && init_data_size) {
5597                 priv->ucode_init.len = init_size;
5598                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5599
5600                 priv->ucode_init_data.len = init_data_size;
5601                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5602
5603                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5604                         goto err_pci_alloc;
5605         }
5606
5607         /* Bootstrap (instructions only, no data) */
5608         if (boot_size) {
5609                 priv->ucode_boot.len = boot_size;
5610                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5611
5612                 if (!priv->ucode_boot.v_addr)
5613                         goto err_pci_alloc;
5614         }
5615
5616         /* Copy images into buffers for card's bus-master reads ... */
5617
5618         /* Runtime instructions (first block of data in file) */
5619         src = &ucode->data[0];
5620         len = priv->ucode_code.len;
5621         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5622         memcpy(priv->ucode_code.v_addr, src, len);
5623         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5624                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5625
5626         /* Runtime data (2nd block)
5627          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
5628         src = &ucode->data[inst_size];
5629         len = priv->ucode_data.len;
5630         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5631         memcpy(priv->ucode_data.v_addr, src, len);
5632         memcpy(priv->ucode_data_backup.v_addr, src, len);
5633
5634         /* Initialization instructions (3rd block) */
5635         if (init_size) {
5636                 src = &ucode->data[inst_size + data_size];
5637                 len = priv->ucode_init.len;
5638                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5639                                len);
5640                 memcpy(priv->ucode_init.v_addr, src, len);
5641         }
5642
5643         /* Initialization data (4th block) */
5644         if (init_data_size) {
5645                 src = &ucode->data[inst_size + data_size + init_size];
5646                 len = priv->ucode_init_data.len;
5647                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5648                                (int)len);
5649                 memcpy(priv->ucode_init_data.v_addr, src, len);
5650         }
5651
5652         /* Bootstrap instructions (5th block) */
5653         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5654         len = priv->ucode_boot.len;
5655         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5656                        (int)len);
5657         memcpy(priv->ucode_boot.v_addr, src, len);
5658
5659         /* We have our copies now, allow OS release its copies */
5660         release_firmware(ucode_raw);
5661         return 0;
5662
5663  err_pci_alloc:
5664         IWL_ERROR("failed to allocate pci memory\n");
5665         ret = -ENOMEM;
5666         iwl3945_dealloc_ucode_pci(priv);
5667
5668  err_release:
5669         release_firmware(ucode_raw);
5670
5671  error:
5672         return ret;
5673 }
5674
5675
5676 /**
5677  * iwl3945_set_ucode_ptrs - Set uCode address location
5678  *
5679  * Tell initialization uCode where to find runtime uCode.
5680  *
5681  * BSM registers initially contain pointers to initialization uCode.
5682  * We need to replace them to load runtime uCode inst and data,
5683  * and to save runtime data when powering down.
5684  */
5685 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
5686 {
5687         dma_addr_t pinst;
5688         dma_addr_t pdata;
5689         int rc = 0;
5690         unsigned long flags;
5691
5692         /* bits 31:0 for 3945 */
5693         pinst = priv->ucode_code.p_addr;
5694         pdata = priv->ucode_data_backup.p_addr;
5695
5696         spin_lock_irqsave(&priv->lock, flags);
5697         rc = iwl3945_grab_nic_access(priv);
5698         if (rc) {
5699                 spin_unlock_irqrestore(&priv->lock, flags);
5700                 return rc;
5701         }
5702
5703         /* Tell bootstrap uCode where to find image to load */
5704         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5705         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5706         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5707                                  priv->ucode_data.len);
5708
5709         /* Inst bytecount must be last to set up, bit 31 signals uCode
5710          *   that all new ptr/size info is in place */
5711         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5712                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5713
5714         iwl3945_release_nic_access(priv);
5715
5716         spin_unlock_irqrestore(&priv->lock, flags);
5717
5718         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5719
5720         return rc;
5721 }
5722
5723 /**
5724  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5725  *
5726  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5727  *
5728  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5729  */
5730 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
5731 {
5732         /* Check alive response for "valid" sign from uCode */
5733         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5734                 /* We had an error bringing up the hardware, so take it
5735                  * all the way back down so we can try again */
5736                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5737                 goto restart;
5738         }
5739
5740         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5741          * This is a paranoid check, because we would not have gotten the
5742          * "initialize" alive if code weren't properly loaded.  */
5743         if (iwl3945_verify_ucode(priv)) {
5744                 /* Runtime instruction load was bad;
5745                  * take it all the way back down so we can try again */
5746                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5747                 goto restart;
5748         }
5749
5750         /* Send pointers to protocol/runtime uCode image ... init code will
5751          * load and launch runtime uCode, which will send us another "Alive"
5752          * notification. */
5753         IWL_DEBUG_INFO("Initialization Alive received.\n");
5754         if (iwl3945_set_ucode_ptrs(priv)) {
5755                 /* Runtime instruction load won't happen;
5756                  * take it all the way back down so we can try again */
5757                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5758                 goto restart;
5759         }
5760         return;
5761
5762  restart:
5763         queue_work(priv->workqueue, &priv->restart);
5764 }
5765
5766
5767 /**
5768  * iwl3945_alive_start - called after REPLY_ALIVE notification received
5769  *                   from protocol/runtime uCode (initialization uCode's
5770  *                   Alive gets handled by iwl3945_init_alive_start()).
5771  */
5772 static void iwl3945_alive_start(struct iwl3945_priv *priv)
5773 {
5774         int rc = 0;
5775         int thermal_spin = 0;
5776         u32 rfkill;
5777
5778         IWL_DEBUG_INFO("Runtime Alive received.\n");
5779
5780         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5781                 /* We had an error bringing up the hardware, so take it
5782                  * all the way back down so we can try again */
5783                 IWL_DEBUG_INFO("Alive failed.\n");
5784                 goto restart;
5785         }
5786
5787         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5788          * This is a paranoid check, because we would not have gotten the
5789          * "runtime" alive if code weren't properly loaded.  */
5790         if (iwl3945_verify_ucode(priv)) {
5791                 /* Runtime instruction load was bad;
5792                  * take it all the way back down so we can try again */
5793                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5794                 goto restart;
5795         }
5796
5797         iwl3945_clear_stations_table(priv);
5798
5799         rc = iwl3945_grab_nic_access(priv);
5800         if (rc) {
5801                 IWL_WARNING("Can not read rfkill status from adapter\n");
5802                 return;
5803         }
5804
5805         rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
5806         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5807         iwl3945_release_nic_access(priv);
5808
5809         if (rfkill & 0x1) {
5810                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5811                 /* if rfkill is not on, then wait for thermal
5812                  * sensor in adapter to kick in */
5813                 while (iwl3945_hw_get_temperature(priv) == 0) {
5814                         thermal_spin++;
5815                         udelay(10);
5816                 }
5817
5818                 if (thermal_spin)
5819                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5820                                        thermal_spin * 10);
5821         } else
5822                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5823
5824         /* After the ALIVE response, we can send commands to 3945 uCode */
5825         set_bit(STATUS_ALIVE, &priv->status);
5826
5827         /* Clear out the uCode error bit if it is set */
5828         clear_bit(STATUS_FW_ERROR, &priv->status);
5829
5830         if (iwl3945_is_rfkill(priv))
5831                 return;
5832
5833         ieee80211_wake_queues(priv->hw);
5834
5835         priv->active_rate = priv->rates_mask;
5836         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5837
5838         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5839
5840         if (iwl3945_is_associated(priv)) {
5841                 struct iwl3945_rxon_cmd *active_rxon =
5842                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
5843
5844                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5845                        sizeof(priv->staging_rxon));
5846                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5847         } else {
5848                 /* Initialize our rx_config data */
5849                 iwl3945_connection_init_rx_config(priv);
5850                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5851         }
5852
5853         /* Configure Bluetooth device coexistence support */
5854         iwl3945_send_bt_config(priv);
5855
5856         /* Configure the adapter for unassociated operation */
5857         iwl3945_commit_rxon(priv);
5858
5859         iwl3945_reg_txpower_periodic(priv);
5860
5861         iwl3945_led_register(priv);
5862
5863         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5864         set_bit(STATUS_READY, &priv->status);
5865         wake_up_interruptible(&priv->wait_command_queue);
5866
5867         if (priv->error_recovering)
5868                 iwl3945_error_recovery(priv);
5869
5870         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
5871         return;
5872
5873  restart:
5874         queue_work(priv->workqueue, &priv->restart);
5875 }
5876
5877 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
5878
5879 static void __iwl3945_down(struct iwl3945_priv *priv)
5880 {
5881         unsigned long flags;
5882         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5883         struct ieee80211_conf *conf = NULL;
5884
5885         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5886
5887         conf = ieee80211_get_hw_conf(priv->hw);
5888
5889         if (!exit_pending)
5890                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5891
5892         iwl3945_led_unregister(priv);
5893         iwl3945_clear_stations_table(priv);
5894
5895         /* Unblock any waiting calls */
5896         wake_up_interruptible_all(&priv->wait_command_queue);
5897
5898         /* Wipe out the EXIT_PENDING status bit if we are not actually
5899          * exiting the module */
5900         if (!exit_pending)
5901                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5902
5903         /* stop and reset the on-board processor */
5904         iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5905
5906         /* tell the device to stop sending interrupts */
5907         spin_lock_irqsave(&priv->lock, flags);
5908         iwl3945_disable_interrupts(priv);
5909         spin_unlock_irqrestore(&priv->lock, flags);
5910         iwl_synchronize_irq(priv);
5911
5912         if (priv->mac80211_registered)
5913                 ieee80211_stop_queues(priv->hw);
5914
5915         /* If we have not previously called iwl3945_init() then
5916          * clear all bits but the RF Kill and SUSPEND bits and return */
5917         if (!iwl3945_is_init(priv)) {
5918                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5919                                         STATUS_RF_KILL_HW |
5920                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5921                                         STATUS_RF_KILL_SW |
5922                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5923                                         STATUS_GEO_CONFIGURED |
5924                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5925                                         STATUS_IN_SUSPEND |
5926                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5927                                         STATUS_EXIT_PENDING;
5928                 goto exit;
5929         }
5930
5931         /* ...otherwise clear out all the status bits but the RF Kill and
5932          * SUSPEND bits and continue taking the NIC down. */
5933         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5934                                 STATUS_RF_KILL_HW |
5935                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5936                                 STATUS_RF_KILL_SW |
5937                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5938                                 STATUS_GEO_CONFIGURED |
5939                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5940                                 STATUS_IN_SUSPEND |
5941                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5942                                 STATUS_FW_ERROR |
5943                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5944                                 STATUS_EXIT_PENDING;
5945
5946         spin_lock_irqsave(&priv->lock, flags);
5947         iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5948         spin_unlock_irqrestore(&priv->lock, flags);
5949
5950         iwl3945_hw_txq_ctx_stop(priv);
5951         iwl3945_hw_rxq_stop(priv);
5952
5953         spin_lock_irqsave(&priv->lock, flags);
5954         if (!iwl3945_grab_nic_access(priv)) {
5955                 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
5956                                          APMG_CLK_VAL_DMA_CLK_RQT);
5957                 iwl3945_release_nic_access(priv);
5958         }
5959         spin_unlock_irqrestore(&priv->lock, flags);
5960
5961         udelay(5);
5962
5963         iwl3945_hw_nic_stop_master(priv);
5964         iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5965         iwl3945_hw_nic_reset(priv);
5966
5967  exit:
5968         memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
5969
5970         if (priv->ibss_beacon)
5971                 dev_kfree_skb(priv->ibss_beacon);
5972         priv->ibss_beacon = NULL;
5973
5974         /* clear out any free frames */
5975         iwl3945_clear_free_frames(priv);
5976 }
5977
5978 static void iwl3945_down(struct iwl3945_priv *priv)
5979 {
5980         mutex_lock(&priv->mutex);
5981         __iwl3945_down(priv);
5982         mutex_unlock(&priv->mutex);
5983
5984         iwl3945_cancel_deferred_work(priv);
5985 }
5986
5987 #define MAX_HW_RESTARTS 5
5988
5989 static int __iwl3945_up(struct iwl3945_priv *priv)
5990 {
5991         int rc, i;
5992
5993         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5994                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5995                 return -EIO;
5996         }
5997
5998         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5999                 IWL_WARNING("Radio disabled by SW RF kill (module "
6000                             "parameter)\n");
6001                 return -ENODEV;
6002         }
6003
6004         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6005                 IWL_ERROR("ucode not available for device bringup\n");
6006                 return -EIO;
6007         }
6008
6009         /* If platform's RF_KILL switch is NOT set to KILL */
6010         if (iwl3945_read32(priv, CSR_GP_CNTRL) &
6011                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6012                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6013         else {
6014                 set_bit(STATUS_RF_KILL_HW, &priv->status);
6015                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6016                         iwl3945_rfkill_set_hw_state(priv);
6017                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6018                         return -ENODEV;
6019                 }
6020         }
6021         iwl3945_rfkill_set_hw_state(priv);
6022         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6023
6024         rc = iwl3945_hw_nic_init(priv);
6025         if (rc) {
6026                 IWL_ERROR("Unable to int nic\n");
6027                 return rc;
6028         }
6029
6030         /* make sure rfkill handshake bits are cleared */
6031         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6032         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6033                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6034
6035         /* clear (again), then enable host interrupts */
6036         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6037         iwl3945_enable_interrupts(priv);
6038
6039         /* really make sure rfkill handshake bits are cleared */
6040         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6041         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6042
6043         /* Copy original ucode data image from disk into backup cache.
6044          * This will be used to initialize the on-board processor's
6045          * data SRAM for a clean start when the runtime program first loads. */
6046         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6047                priv->ucode_data.len);
6048
6049         /* We return success when we resume from suspend and rf_kill is on. */
6050         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6051                 return 0;
6052
6053         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6054
6055                 iwl3945_clear_stations_table(priv);
6056
6057                 /* load bootstrap state machine,
6058                  * load bootstrap program into processor's memory,
6059                  * prepare to load the "initialize" uCode */
6060                 rc = iwl3945_load_bsm(priv);
6061
6062                 if (rc) {
6063                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6064                         continue;
6065                 }
6066
6067                 /* start card; "initialize" will load runtime ucode */
6068                 iwl3945_nic_start(priv);
6069
6070                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6071
6072                 return 0;
6073         }
6074
6075         set_bit(STATUS_EXIT_PENDING, &priv->status);
6076         __iwl3945_down(priv);
6077         clear_bit(STATUS_EXIT_PENDING, &priv->status);
6078
6079         /* tried to restart and config the device for as long as our
6080          * patience could withstand */
6081         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6082         return -EIO;
6083 }
6084
6085
6086 /*****************************************************************************
6087  *
6088  * Workqueue callbacks
6089  *
6090  *****************************************************************************/
6091
6092 static void iwl3945_bg_init_alive_start(struct work_struct *data)
6093 {
6094         struct iwl3945_priv *priv =
6095             container_of(data, struct iwl3945_priv, init_alive_start.work);
6096
6097         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6098                 return;
6099
6100         mutex_lock(&priv->mutex);
6101         iwl3945_init_alive_start(priv);
6102         mutex_unlock(&priv->mutex);
6103 }
6104
6105 static void iwl3945_bg_alive_start(struct work_struct *data)
6106 {
6107         struct iwl3945_priv *priv =
6108             container_of(data, struct iwl3945_priv, alive_start.work);
6109
6110         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6111                 return;
6112
6113         mutex_lock(&priv->mutex);
6114         iwl3945_alive_start(priv);
6115         mutex_unlock(&priv->mutex);
6116 }
6117
6118 static void iwl3945_bg_rf_kill(struct work_struct *work)
6119 {
6120         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
6121
6122         wake_up_interruptible(&priv->wait_command_queue);
6123
6124         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6125                 return;
6126
6127         mutex_lock(&priv->mutex);
6128
6129         if (!iwl3945_is_rfkill(priv)) {
6130                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6131                           "HW and/or SW RF Kill no longer active, restarting "
6132                           "device\n");
6133                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6134                         queue_work(priv->workqueue, &priv->restart);
6135         } else {
6136
6137                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6138                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6139                                           "disabled by SW switch\n");
6140                 else
6141                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6142                                     "Kill switch must be turned off for "
6143                                     "wireless networking to work.\n");
6144         }
6145
6146         iwl3945_rfkill_set_hw_state(priv);
6147         mutex_unlock(&priv->mutex);
6148 }
6149
6150 static void iwl3945_bg_set_monitor(struct work_struct *work)
6151 {
6152         struct iwl3945_priv *priv = container_of(work,
6153                                 struct iwl3945_priv, set_monitor);
6154
6155         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
6156
6157         mutex_lock(&priv->mutex);
6158
6159         if (!iwl3945_is_ready(priv))
6160                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
6161         else
6162                 if (iwl3945_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
6163                         IWL_ERROR("iwl3945_set_mode() failed\n");
6164
6165         mutex_unlock(&priv->mutex);
6166 }
6167
6168 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6169
6170 static void iwl3945_bg_scan_check(struct work_struct *data)
6171 {
6172         struct iwl3945_priv *priv =
6173             container_of(data, struct iwl3945_priv, scan_check.work);
6174
6175         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6176                 return;
6177
6178         mutex_lock(&priv->mutex);
6179         if (test_bit(STATUS_SCANNING, &priv->status) ||
6180             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6181                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6182                           "Scan completion watchdog resetting adapter (%dms)\n",
6183                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6184
6185                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6186                         iwl3945_send_scan_abort(priv);
6187         }
6188         mutex_unlock(&priv->mutex);
6189 }
6190
6191 static void iwl3945_bg_request_scan(struct work_struct *data)
6192 {
6193         struct iwl3945_priv *priv =
6194             container_of(data, struct iwl3945_priv, request_scan);
6195         struct iwl3945_host_cmd cmd = {
6196                 .id = REPLY_SCAN_CMD,
6197                 .len = sizeof(struct iwl3945_scan_cmd),
6198                 .meta.flags = CMD_SIZE_HUGE,
6199         };
6200         int rc = 0;
6201         struct iwl3945_scan_cmd *scan;
6202         struct ieee80211_conf *conf = NULL;
6203         u8 direct_mask;
6204         enum ieee80211_band band;
6205
6206         conf = ieee80211_get_hw_conf(priv->hw);
6207
6208         mutex_lock(&priv->mutex);
6209
6210         if (!iwl3945_is_ready(priv)) {
6211                 IWL_WARNING("request scan called when driver not ready.\n");
6212                 goto done;
6213         }
6214
6215         /* Make sure the scan wasn't cancelled before this queued work
6216          * was given the chance to run... */
6217         if (!test_bit(STATUS_SCANNING, &priv->status))
6218                 goto done;
6219
6220         /* This should never be called or scheduled if there is currently
6221          * a scan active in the hardware. */
6222         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6223                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6224                                "Ignoring second request.\n");
6225                 rc = -EIO;
6226                 goto done;
6227         }
6228
6229         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6230                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6231                 goto done;
6232         }
6233
6234         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6235                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6236                 goto done;
6237         }
6238
6239         if (iwl3945_is_rfkill(priv)) {
6240                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6241                 goto done;
6242         }
6243
6244         if (!test_bit(STATUS_READY, &priv->status)) {
6245                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6246                 goto done;
6247         }
6248
6249         if (!priv->scan_bands) {
6250                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6251                 goto done;
6252         }
6253
6254         if (!priv->scan) {
6255                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6256                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6257                 if (!priv->scan) {
6258                         rc = -ENOMEM;
6259                         goto done;
6260                 }
6261         }
6262         scan = priv->scan;
6263         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6264
6265         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6266         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6267
6268         if (iwl3945_is_associated(priv)) {
6269                 u16 interval = 0;
6270                 u32 extra;
6271                 u32 suspend_time = 100;
6272                 u32 scan_suspend_time = 100;
6273                 unsigned long flags;
6274
6275                 IWL_DEBUG_INFO("Scanning while associated...\n");
6276
6277                 spin_lock_irqsave(&priv->lock, flags);
6278                 interval = priv->beacon_int;
6279                 spin_unlock_irqrestore(&priv->lock, flags);
6280
6281                 scan->suspend_time = 0;
6282                 scan->max_out_time = cpu_to_le32(200 * 1024);
6283                 if (!interval)
6284                         interval = suspend_time;
6285                 /*
6286                  * suspend time format:
6287                  *  0-19: beacon interval in usec (time before exec.)
6288                  * 20-23: 0
6289                  * 24-31: number of beacons (suspend between channels)
6290                  */
6291
6292                 extra = (suspend_time / interval) << 24;
6293                 scan_suspend_time = 0xFF0FFFFF &
6294                     (extra | ((suspend_time % interval) * 1024));
6295
6296                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6297                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6298                                scan_suspend_time, interval);
6299         }
6300
6301         /* We should add the ability for user to lock to PASSIVE ONLY */
6302         if (priv->one_direct_scan) {
6303                 IWL_DEBUG_SCAN
6304                     ("Kicking off one direct scan for '%s'\n",
6305                      iwl3945_escape_essid(priv->direct_ssid,
6306                                       priv->direct_ssid_len));
6307                 scan->direct_scan[0].id = WLAN_EID_SSID;
6308                 scan->direct_scan[0].len = priv->direct_ssid_len;
6309                 memcpy(scan->direct_scan[0].ssid,
6310                        priv->direct_ssid, priv->direct_ssid_len);
6311                 direct_mask = 1;
6312         } else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6313                 IWL_DEBUG_SCAN
6314                   ("Kicking off one direct scan for '%s' when not associated\n",
6315                    iwl3945_escape_essid(priv->essid, priv->essid_len));
6316                 scan->direct_scan[0].id = WLAN_EID_SSID;
6317                 scan->direct_scan[0].len = priv->essid_len;
6318                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6319                 direct_mask = 1;
6320         } else {
6321                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
6322                 direct_mask = 0;
6323         }
6324
6325         /* We don't build a direct scan probe request; the uCode will do
6326          * that based on the direct_mask added to each channel entry */
6327         scan->tx_cmd.len = cpu_to_le16(
6328                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6329                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
6330         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6331         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6332         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6333
6334         /* flags + rate selection */
6335
6336         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
6337                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6338                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6339                 scan->good_CRC_th = 0;
6340                 band = IEEE80211_BAND_2GHZ;
6341         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
6342                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6343                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6344                 band = IEEE80211_BAND_5GHZ;
6345         } else {
6346                 IWL_WARNING("Invalid scan band count\n");
6347                 goto done;
6348         }
6349
6350         /* select Rx antennas */
6351         scan->flags |= iwl3945_get_antenna_flags(priv);
6352
6353         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6354                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6355
6356         if (direct_mask)
6357                 scan->channel_count =
6358                         iwl3945_get_channels_for_scan(
6359                                 priv, band, 1, /* active */
6360                                 direct_mask,
6361                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6362         else
6363                 scan->channel_count =
6364                         iwl3945_get_channels_for_scan(
6365                                 priv, band, 0, /* passive */
6366                                 direct_mask,
6367                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6368
6369         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6370             scan->channel_count * sizeof(struct iwl3945_scan_channel);
6371         cmd.data = scan;
6372         scan->len = cpu_to_le16(cmd.len);
6373
6374         set_bit(STATUS_SCAN_HW, &priv->status);
6375         rc = iwl3945_send_cmd_sync(priv, &cmd);
6376         if (rc)
6377                 goto done;
6378
6379         queue_delayed_work(priv->workqueue, &priv->scan_check,
6380                            IWL_SCAN_CHECK_WATCHDOG);
6381
6382         mutex_unlock(&priv->mutex);
6383         return;
6384
6385  done:
6386         /* inform mac80211 scan aborted */
6387         queue_work(priv->workqueue, &priv->scan_completed);
6388         mutex_unlock(&priv->mutex);
6389 }
6390
6391 static void iwl3945_bg_up(struct work_struct *data)
6392 {
6393         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6394
6395         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6396                 return;
6397
6398         mutex_lock(&priv->mutex);
6399         __iwl3945_up(priv);
6400         mutex_unlock(&priv->mutex);
6401 }
6402
6403 static void iwl3945_bg_restart(struct work_struct *data)
6404 {
6405         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6406
6407         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6408                 return;
6409
6410         iwl3945_down(priv);
6411         queue_work(priv->workqueue, &priv->up);
6412 }
6413
6414 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6415 {
6416         struct iwl3945_priv *priv =
6417             container_of(data, struct iwl3945_priv, rx_replenish);
6418
6419         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6420                 return;
6421
6422         mutex_lock(&priv->mutex);
6423         iwl3945_rx_replenish(priv);
6424         mutex_unlock(&priv->mutex);
6425 }
6426
6427 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6428
6429 static void iwl3945_bg_post_associate(struct work_struct *data)
6430 {
6431         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
6432                                              post_associate.work);
6433
6434         int rc = 0;
6435         struct ieee80211_conf *conf = NULL;
6436         DECLARE_MAC_BUF(mac);
6437
6438         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6439                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6440                 return;
6441         }
6442
6443
6444         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6445                         priv->assoc_id,
6446                         print_mac(mac, priv->active_rxon.bssid_addr));
6447
6448         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6449                 return;
6450
6451         mutex_lock(&priv->mutex);
6452
6453         if (!priv->vif || !priv->is_open) {
6454                 mutex_unlock(&priv->mutex);
6455                 return;
6456         }
6457         iwl3945_scan_cancel_timeout(priv, 200);
6458
6459         conf = ieee80211_get_hw_conf(priv->hw);
6460
6461         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6462         iwl3945_commit_rxon(priv);
6463
6464         memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6465         iwl3945_setup_rxon_timing(priv);
6466         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6467                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6468         if (rc)
6469                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6470                             "Attempting to continue.\n");
6471
6472         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6473
6474         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6475
6476         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6477                         priv->assoc_id, priv->beacon_int);
6478
6479         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6480                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6481         else
6482                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6483
6484         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6485                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6486                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6487                 else
6488                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6489
6490                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6491                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6492
6493         }
6494
6495         iwl3945_commit_rxon(priv);
6496
6497         switch (priv->iw_mode) {
6498         case IEEE80211_IF_TYPE_STA:
6499                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6500                 break;
6501
6502         case IEEE80211_IF_TYPE_IBSS:
6503
6504                 /* clear out the station table */
6505                 iwl3945_clear_stations_table(priv);
6506
6507                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6508                 iwl3945_add_station(priv, priv->bssid, 0, 0);
6509                 iwl3945_sync_sta(priv, IWL_STA_ID,
6510                                  (priv->band == IEEE80211_BAND_5GHZ) ?
6511                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6512                                  CMD_ASYNC);
6513                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6514                 iwl3945_send_beacon_cmd(priv);
6515
6516                 break;
6517
6518         default:
6519                  IWL_ERROR("%s Should not be called in %d mode\n",
6520                            __FUNCTION__, priv->iw_mode);
6521                 break;
6522         }
6523
6524         iwl3945_sequence_reset(priv);
6525
6526         iwl3945_activate_qos(priv, 0);
6527
6528         /* we have just associated, don't start scan too early */
6529         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6530         mutex_unlock(&priv->mutex);
6531 }
6532
6533 static void iwl3945_bg_abort_scan(struct work_struct *work)
6534 {
6535         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6536
6537         if (!iwl3945_is_ready(priv))
6538                 return;
6539
6540         mutex_lock(&priv->mutex);
6541
6542         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6543         iwl3945_send_scan_abort(priv);
6544
6545         mutex_unlock(&priv->mutex);
6546 }
6547
6548 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6549
6550 static void iwl3945_bg_scan_completed(struct work_struct *work)
6551 {
6552         struct iwl3945_priv *priv =
6553             container_of(work, struct iwl3945_priv, scan_completed);
6554
6555         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6556
6557         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6558                 return;
6559
6560         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6561                 iwl3945_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6562
6563         ieee80211_scan_completed(priv->hw);
6564
6565         /* Since setting the TXPOWER may have been deferred while
6566          * performing the scan, fire one off */
6567         mutex_lock(&priv->mutex);
6568         iwl3945_hw_reg_send_txpower(priv);
6569         mutex_unlock(&priv->mutex);
6570 }
6571
6572 /*****************************************************************************
6573  *
6574  * mac80211 entry point functions
6575  *
6576  *****************************************************************************/
6577
6578 #define UCODE_READY_TIMEOUT     (2 * HZ)
6579
6580 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6581 {
6582         struct iwl3945_priv *priv = hw->priv;
6583         int ret;
6584
6585         IWL_DEBUG_MAC80211("enter\n");
6586
6587         if (pci_enable_device(priv->pci_dev)) {
6588                 IWL_ERROR("Fail to pci_enable_device\n");
6589                 return -ENODEV;
6590         }
6591         pci_restore_state(priv->pci_dev);
6592         pci_enable_msi(priv->pci_dev);
6593
6594         ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6595                           DRV_NAME, priv);
6596         if (ret) {
6597                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6598                 goto out_disable_msi;
6599         }
6600
6601         /* we should be verifying the device is ready to be opened */
6602         mutex_lock(&priv->mutex);
6603
6604         memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6605         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6606          * ucode filename and max sizes are card-specific. */
6607
6608         if (!priv->ucode_code.len) {
6609                 ret = iwl3945_read_ucode(priv);
6610                 if (ret) {
6611                         IWL_ERROR("Could not read microcode: %d\n", ret);
6612                         mutex_unlock(&priv->mutex);
6613                         goto out_release_irq;
6614                 }
6615         }
6616
6617         ret = __iwl3945_up(priv);
6618
6619         mutex_unlock(&priv->mutex);
6620
6621         if (ret)
6622                 goto out_release_irq;
6623
6624         IWL_DEBUG_INFO("Start UP work.\n");
6625
6626         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6627                 return 0;
6628
6629         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6630          * mac80211 will not be run successfully. */
6631         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6632                         test_bit(STATUS_READY, &priv->status),
6633                         UCODE_READY_TIMEOUT);
6634         if (!ret) {
6635                 if (!test_bit(STATUS_READY, &priv->status)) {
6636                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6637                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6638                         ret = -ETIMEDOUT;
6639                         goto out_release_irq;
6640                 }
6641         }
6642
6643         priv->is_open = 1;
6644         IWL_DEBUG_MAC80211("leave\n");
6645         return 0;
6646
6647 out_release_irq:
6648         free_irq(priv->pci_dev->irq, priv);
6649 out_disable_msi:
6650         pci_disable_msi(priv->pci_dev);
6651         pci_disable_device(priv->pci_dev);
6652         priv->is_open = 0;
6653         IWL_DEBUG_MAC80211("leave - failed\n");
6654         return ret;
6655 }
6656
6657 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6658 {
6659         struct iwl3945_priv *priv = hw->priv;
6660
6661         IWL_DEBUG_MAC80211("enter\n");
6662
6663         if (!priv->is_open) {
6664                 IWL_DEBUG_MAC80211("leave - skip\n");
6665                 return;
6666         }
6667
6668         priv->is_open = 0;
6669
6670         if (iwl3945_is_ready_rf(priv)) {
6671                 /* stop mac, cancel any scan request and clear
6672                  * RXON_FILTER_ASSOC_MSK BIT
6673                  */
6674                 mutex_lock(&priv->mutex);
6675                 iwl3945_scan_cancel_timeout(priv, 100);
6676                 cancel_delayed_work(&priv->post_associate);
6677                 mutex_unlock(&priv->mutex);
6678         }
6679
6680         iwl3945_down(priv);
6681
6682         flush_workqueue(priv->workqueue);
6683         free_irq(priv->pci_dev->irq, priv);
6684         pci_disable_msi(priv->pci_dev);
6685         pci_save_state(priv->pci_dev);
6686         pci_disable_device(priv->pci_dev);
6687
6688         IWL_DEBUG_MAC80211("leave\n");
6689 }
6690
6691 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
6692 {
6693         struct iwl3945_priv *priv = hw->priv;
6694
6695         IWL_DEBUG_MAC80211("enter\n");
6696
6697         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6698                 IWL_DEBUG_MAC80211("leave - monitor\n");
6699                 dev_kfree_skb_any(skb);
6700                 return 0;
6701         }
6702
6703         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6704                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
6705
6706         if (iwl3945_tx_skb(priv, skb))
6707                 dev_kfree_skb_any(skb);
6708
6709         IWL_DEBUG_MAC80211("leave\n");
6710         return 0;
6711 }
6712
6713 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6714                                  struct ieee80211_if_init_conf *conf)
6715 {
6716         struct iwl3945_priv *priv = hw->priv;
6717         unsigned long flags;
6718         DECLARE_MAC_BUF(mac);
6719
6720         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6721
6722         if (priv->vif) {
6723                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6724                 return -EOPNOTSUPP;
6725         }
6726
6727         spin_lock_irqsave(&priv->lock, flags);
6728         priv->vif = conf->vif;
6729
6730         spin_unlock_irqrestore(&priv->lock, flags);
6731
6732         mutex_lock(&priv->mutex);
6733
6734         if (conf->mac_addr) {
6735                 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
6736                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6737         }
6738
6739         if (iwl3945_is_ready(priv))
6740                 iwl3945_set_mode(priv, conf->type);
6741
6742         mutex_unlock(&priv->mutex);
6743
6744         IWL_DEBUG_MAC80211("leave\n");
6745         return 0;
6746 }
6747
6748 /**
6749  * iwl3945_mac_config - mac80211 config callback
6750  *
6751  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6752  * be set inappropriately and the driver currently sets the hardware up to
6753  * use it whenever needed.
6754  */
6755 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6756 {
6757         struct iwl3945_priv *priv = hw->priv;
6758         const struct iwl3945_channel_info *ch_info;
6759         unsigned long flags;
6760         int ret = 0;
6761
6762         mutex_lock(&priv->mutex);
6763         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6764
6765         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6766
6767         if (!iwl3945_is_ready(priv)) {
6768                 IWL_DEBUG_MAC80211("leave - not ready\n");
6769                 ret = -EIO;
6770                 goto out;
6771         }
6772
6773         if (unlikely(!iwl3945_param_disable_hw_scan &&
6774                      test_bit(STATUS_SCANNING, &priv->status))) {
6775                 IWL_DEBUG_MAC80211("leave - scanning\n");
6776                 set_bit(STATUS_CONF_PENDING, &priv->status);
6777                 mutex_unlock(&priv->mutex);
6778                 return 0;
6779         }
6780
6781         spin_lock_irqsave(&priv->lock, flags);
6782
6783         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6784                                            conf->channel->hw_value);
6785         if (!is_channel_valid(ch_info)) {
6786                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6787                                conf->channel->hw_value, conf->channel->band);
6788                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6789                 spin_unlock_irqrestore(&priv->lock, flags);
6790                 ret = -EINVAL;
6791                 goto out;
6792         }
6793
6794         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6795
6796         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6797
6798         /* The list of supported rates and rate mask can be different
6799          * for each phymode; since the phymode may have changed, reset
6800          * the rate mask to what mac80211 lists */
6801         iwl3945_set_rate(priv);
6802
6803         spin_unlock_irqrestore(&priv->lock, flags);
6804
6805 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6806         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6807                 iwl3945_hw_channel_switch(priv, conf->channel);
6808                 goto out;
6809         }
6810 #endif
6811
6812         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6813
6814         if (!conf->radio_enabled) {
6815                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6816                 goto out;
6817         }
6818
6819         if (iwl3945_is_rfkill(priv)) {
6820                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6821                 ret = -EIO;
6822                 goto out;
6823         }
6824
6825         iwl3945_set_rate(priv);
6826
6827         if (memcmp(&priv->active_rxon,
6828                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6829                 iwl3945_commit_rxon(priv);
6830         else
6831                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6832
6833         IWL_DEBUG_MAC80211("leave\n");
6834
6835 out:
6836         clear_bit(STATUS_CONF_PENDING, &priv->status);
6837         mutex_unlock(&priv->mutex);
6838         return ret;
6839 }
6840
6841 static void iwl3945_config_ap(struct iwl3945_priv *priv)
6842 {
6843         int rc = 0;
6844
6845         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6846                 return;
6847
6848         /* The following should be done only at AP bring up */
6849         if (!(iwl3945_is_associated(priv))) {
6850
6851                 /* RXON - unassoc (to set timing command) */
6852                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6853                 iwl3945_commit_rxon(priv);
6854
6855                 /* RXON Timing */
6856                 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6857                 iwl3945_setup_rxon_timing(priv);
6858                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6859                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6860                 if (rc)
6861                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6862                                         "Attempting to continue.\n");
6863
6864                 /* FIXME: what should be the assoc_id for AP? */
6865                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6866                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6867                         priv->staging_rxon.flags |=
6868                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6869                 else
6870                         priv->staging_rxon.flags &=
6871                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6872
6873                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6874                         if (priv->assoc_capability &
6875                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6876                                 priv->staging_rxon.flags |=
6877                                         RXON_FLG_SHORT_SLOT_MSK;
6878                         else
6879                                 priv->staging_rxon.flags &=
6880                                         ~RXON_FLG_SHORT_SLOT_MSK;
6881
6882                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6883                                 priv->staging_rxon.flags &=
6884                                         ~RXON_FLG_SHORT_SLOT_MSK;
6885                 }
6886                 /* restore RXON assoc */
6887                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6888                 iwl3945_commit_rxon(priv);
6889                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6890         }
6891         iwl3945_send_beacon_cmd(priv);
6892
6893         /* FIXME - we need to add code here to detect a totally new
6894          * configuration, reset the AP, unassoc, rxon timing, assoc,
6895          * clear sta table, add BCAST sta... */
6896 }
6897
6898 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6899                                         struct ieee80211_vif *vif,
6900                                     struct ieee80211_if_conf *conf)
6901 {
6902         struct iwl3945_priv *priv = hw->priv;
6903         DECLARE_MAC_BUF(mac);
6904         unsigned long flags;
6905         int rc;
6906
6907         if (conf == NULL)
6908                 return -EIO;
6909
6910         if (priv->vif != vif) {
6911                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6912                 return 0;
6913         }
6914
6915         /* XXX: this MUST use conf->mac_addr */
6916
6917         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6918             (!conf->beacon || !conf->ssid_len)) {
6919                 IWL_DEBUG_MAC80211
6920                     ("Leaving in AP mode because HostAPD is not ready.\n");
6921                 return 0;
6922         }
6923
6924         if (!iwl3945_is_alive(priv))
6925                 return -EAGAIN;
6926
6927         mutex_lock(&priv->mutex);
6928
6929         if (conf->bssid)
6930                 IWL_DEBUG_MAC80211("bssid: %s\n",
6931                                    print_mac(mac, conf->bssid));
6932
6933 /*
6934  * very dubious code was here; the probe filtering flag is never set:
6935  *
6936         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6937             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6938  */
6939
6940         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6941                 if (!conf->bssid) {
6942                         conf->bssid = priv->mac_addr;
6943                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6944                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6945                                            print_mac(mac, conf->bssid));
6946                 }
6947                 if (priv->ibss_beacon)
6948                         dev_kfree_skb(priv->ibss_beacon);
6949
6950                 priv->ibss_beacon = conf->beacon;
6951         }
6952
6953         if (iwl3945_is_rfkill(priv))
6954                 goto done;
6955
6956         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6957             !is_multicast_ether_addr(conf->bssid)) {
6958                 /* If there is currently a HW scan going on in the background
6959                  * then we need to cancel it else the RXON below will fail. */
6960                 if (iwl3945_scan_cancel_timeout(priv, 100)) {
6961                         IWL_WARNING("Aborted scan still in progress "
6962                                     "after 100ms\n");
6963                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6964                         mutex_unlock(&priv->mutex);
6965                         return -EAGAIN;
6966                 }
6967                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6968
6969                 /* TODO: Audit driver for usage of these members and see
6970                  * if mac80211 deprecates them (priv->bssid looks like it
6971                  * shouldn't be there, but I haven't scanned the IBSS code
6972                  * to verify) - jpk */
6973                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6974
6975                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6976                         iwl3945_config_ap(priv);
6977                 else {
6978                         rc = iwl3945_commit_rxon(priv);
6979                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6980                                 iwl3945_add_station(priv,
6981                                         priv->active_rxon.bssid_addr, 1, 0);
6982                 }
6983
6984         } else {
6985                 iwl3945_scan_cancel_timeout(priv, 100);
6986                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6987                 iwl3945_commit_rxon(priv);
6988         }
6989
6990  done:
6991         spin_lock_irqsave(&priv->lock, flags);
6992         if (!conf->ssid_len)
6993                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6994         else
6995                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6996
6997         priv->essid_len = conf->ssid_len;
6998         spin_unlock_irqrestore(&priv->lock, flags);
6999
7000         IWL_DEBUG_MAC80211("leave\n");
7001         mutex_unlock(&priv->mutex);
7002
7003         return 0;
7004 }
7005
7006 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
7007                                  unsigned int changed_flags,
7008                                  unsigned int *total_flags,
7009                                  int mc_count, struct dev_addr_list *mc_list)
7010 {
7011         struct iwl3945_priv *priv = hw->priv;
7012
7013         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
7014                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
7015                                    IEEE80211_IF_TYPE_MNTR,
7016                                    changed_flags, *total_flags);
7017                 /* queue work 'cuz mac80211 is holding a lock which
7018                  * prevents us from issuing (synchronous) f/w cmds */
7019                 queue_work(priv->workqueue, &priv->set_monitor);
7020         }
7021         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
7022                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
7023 }
7024
7025 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
7026                                      struct ieee80211_if_init_conf *conf)
7027 {
7028         struct iwl3945_priv *priv = hw->priv;
7029
7030         IWL_DEBUG_MAC80211("enter\n");
7031
7032         mutex_lock(&priv->mutex);
7033
7034         if (iwl3945_is_ready_rf(priv)) {
7035                 iwl3945_scan_cancel_timeout(priv, 100);
7036                 cancel_delayed_work(&priv->post_associate);
7037                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7038                 iwl3945_commit_rxon(priv);
7039         }
7040         if (priv->vif == conf->vif) {
7041                 priv->vif = NULL;
7042                 memset(priv->bssid, 0, ETH_ALEN);
7043                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7044                 priv->essid_len = 0;
7045         }
7046         mutex_unlock(&priv->mutex);
7047
7048         IWL_DEBUG_MAC80211("leave\n");
7049 }
7050
7051 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7052 {
7053         int rc = 0;
7054         unsigned long flags;
7055         struct iwl3945_priv *priv = hw->priv;
7056
7057         IWL_DEBUG_MAC80211("enter\n");
7058
7059         mutex_lock(&priv->mutex);
7060         spin_lock_irqsave(&priv->lock, flags);
7061
7062         if (!iwl3945_is_ready_rf(priv)) {
7063                 rc = -EIO;
7064                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7065                 goto out_unlock;
7066         }
7067
7068         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7069                 rc = -EIO;
7070                 IWL_ERROR("ERROR: APs don't scan\n");
7071                 goto out_unlock;
7072         }
7073
7074         /* we don't schedule scan within next_scan_jiffies period */
7075         if (priv->next_scan_jiffies &&
7076                         time_after(priv->next_scan_jiffies, jiffies)) {
7077                 rc = -EAGAIN;
7078                 goto out_unlock;
7079         }
7080         /* if we just finished scan ask for delay for a broadcast scan */
7081         if ((len == 0) && priv->last_scan_jiffies &&
7082             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7083                        jiffies)) {
7084                 rc = -EAGAIN;
7085                 goto out_unlock;
7086         }
7087         if (len) {
7088                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7089                                iwl3945_escape_essid(ssid, len), (int)len);
7090
7091                 priv->one_direct_scan = 1;
7092                 priv->direct_ssid_len = (u8)
7093                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7094                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7095         } else
7096                 priv->one_direct_scan = 0;
7097
7098         rc = iwl3945_scan_initiate(priv);
7099
7100         IWL_DEBUG_MAC80211("leave\n");
7101
7102 out_unlock:
7103         spin_unlock_irqrestore(&priv->lock, flags);
7104         mutex_unlock(&priv->mutex);
7105
7106         return rc;
7107 }
7108
7109 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7110                            const u8 *local_addr, const u8 *addr,
7111                            struct ieee80211_key_conf *key)
7112 {
7113         struct iwl3945_priv *priv = hw->priv;
7114         int rc = 0;
7115         u8 sta_id;
7116
7117         IWL_DEBUG_MAC80211("enter\n");
7118
7119         if (!iwl3945_param_hwcrypto) {
7120                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7121                 return -EOPNOTSUPP;
7122         }
7123
7124         if (is_zero_ether_addr(addr))
7125                 /* only support pairwise keys */
7126                 return -EOPNOTSUPP;
7127
7128         sta_id = iwl3945_hw_find_station(priv, addr);
7129         if (sta_id == IWL_INVALID_STATION) {
7130                 DECLARE_MAC_BUF(mac);
7131
7132                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7133                                    print_mac(mac, addr));
7134                 return -EINVAL;
7135         }
7136
7137         mutex_lock(&priv->mutex);
7138
7139         iwl3945_scan_cancel_timeout(priv, 100);
7140
7141         switch (cmd) {
7142         case  SET_KEY:
7143                 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7144                 if (!rc) {
7145                         iwl3945_set_rxon_hwcrypto(priv, 1);
7146                         iwl3945_commit_rxon(priv);
7147                         key->hw_key_idx = sta_id;
7148                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7149                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7150                 }
7151                 break;
7152         case DISABLE_KEY:
7153                 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7154                 if (!rc) {
7155                         iwl3945_set_rxon_hwcrypto(priv, 0);
7156                         iwl3945_commit_rxon(priv);
7157                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7158                 }
7159                 break;
7160         default:
7161                 rc = -EINVAL;
7162         }
7163
7164         IWL_DEBUG_MAC80211("leave\n");
7165         mutex_unlock(&priv->mutex);
7166
7167         return rc;
7168 }
7169
7170 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
7171                            const struct ieee80211_tx_queue_params *params)
7172 {
7173         struct iwl3945_priv *priv = hw->priv;
7174         unsigned long flags;
7175         int q;
7176
7177         IWL_DEBUG_MAC80211("enter\n");
7178
7179         if (!iwl3945_is_ready_rf(priv)) {
7180                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7181                 return -EIO;
7182         }
7183
7184         if (queue >= AC_NUM) {
7185                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7186                 return 0;
7187         }
7188
7189         if (!priv->qos_data.qos_enable) {
7190                 priv->qos_data.qos_active = 0;
7191                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7192                 return 0;
7193         }
7194         q = AC_NUM - 1 - queue;
7195
7196         spin_lock_irqsave(&priv->lock, flags);
7197
7198         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7199         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7200         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7201         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7202                         cpu_to_le16((params->txop * 32));
7203
7204         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7205         priv->qos_data.qos_active = 1;
7206
7207         spin_unlock_irqrestore(&priv->lock, flags);
7208
7209         mutex_lock(&priv->mutex);
7210         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7211                 iwl3945_activate_qos(priv, 1);
7212         else if (priv->assoc_id && iwl3945_is_associated(priv))
7213                 iwl3945_activate_qos(priv, 0);
7214
7215         mutex_unlock(&priv->mutex);
7216
7217         IWL_DEBUG_MAC80211("leave\n");
7218         return 0;
7219 }
7220
7221 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7222                                 struct ieee80211_tx_queue_stats *stats)
7223 {
7224         struct iwl3945_priv *priv = hw->priv;
7225         int i, avail;
7226         struct iwl3945_tx_queue *txq;
7227         struct iwl3945_queue *q;
7228         unsigned long flags;
7229
7230         IWL_DEBUG_MAC80211("enter\n");
7231
7232         if (!iwl3945_is_ready_rf(priv)) {
7233                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7234                 return -EIO;
7235         }
7236
7237         spin_lock_irqsave(&priv->lock, flags);
7238
7239         for (i = 0; i < AC_NUM; i++) {
7240                 txq = &priv->txq[i];
7241                 q = &txq->q;
7242                 avail = iwl3945_queue_space(q);
7243
7244                 stats[i].len = q->n_window - avail;
7245                 stats[i].limit = q->n_window - q->high_mark;
7246                 stats[i].count = q->n_window;
7247
7248         }
7249         spin_unlock_irqrestore(&priv->lock, flags);
7250
7251         IWL_DEBUG_MAC80211("leave\n");
7252
7253         return 0;
7254 }
7255
7256 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7257                              struct ieee80211_low_level_stats *stats)
7258 {
7259         IWL_DEBUG_MAC80211("enter\n");
7260         IWL_DEBUG_MAC80211("leave\n");
7261
7262         return 0;
7263 }
7264
7265 static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
7266 {
7267         IWL_DEBUG_MAC80211("enter\n");
7268         IWL_DEBUG_MAC80211("leave\n");
7269
7270         return 0;
7271 }
7272
7273 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7274 {
7275         struct iwl3945_priv *priv = hw->priv;
7276         unsigned long flags;
7277
7278         mutex_lock(&priv->mutex);
7279         IWL_DEBUG_MAC80211("enter\n");
7280
7281         iwl3945_reset_qos(priv);
7282
7283         cancel_delayed_work(&priv->post_associate);
7284
7285         spin_lock_irqsave(&priv->lock, flags);
7286         priv->assoc_id = 0;
7287         priv->assoc_capability = 0;
7288         priv->call_post_assoc_from_beacon = 0;
7289
7290         /* new association get rid of ibss beacon skb */
7291         if (priv->ibss_beacon)
7292                 dev_kfree_skb(priv->ibss_beacon);
7293
7294         priv->ibss_beacon = NULL;
7295
7296         priv->beacon_int = priv->hw->conf.beacon_int;
7297         priv->timestamp1 = 0;
7298         priv->timestamp0 = 0;
7299         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7300                 priv->beacon_int = 0;
7301
7302         spin_unlock_irqrestore(&priv->lock, flags);
7303
7304         if (!iwl3945_is_ready_rf(priv)) {
7305                 IWL_DEBUG_MAC80211("leave - not ready\n");
7306                 mutex_unlock(&priv->mutex);
7307                 return;
7308         }
7309
7310         /* we are restarting association process
7311          * clear RXON_FILTER_ASSOC_MSK bit
7312         */
7313         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7314                 iwl3945_scan_cancel_timeout(priv, 100);
7315                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7316                 iwl3945_commit_rxon(priv);
7317         }
7318
7319         /* Per mac80211.h: This is only used in IBSS mode... */
7320         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7321
7322                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7323                 mutex_unlock(&priv->mutex);
7324                 return;
7325         }
7326
7327         iwl3945_set_rate(priv);
7328
7329         mutex_unlock(&priv->mutex);
7330
7331         IWL_DEBUG_MAC80211("leave\n");
7332
7333 }
7334
7335 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
7336 {
7337         struct iwl3945_priv *priv = hw->priv;
7338         unsigned long flags;
7339
7340         mutex_lock(&priv->mutex);
7341         IWL_DEBUG_MAC80211("enter\n");
7342
7343         if (!iwl3945_is_ready_rf(priv)) {
7344                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7345                 mutex_unlock(&priv->mutex);
7346                 return -EIO;
7347         }
7348
7349         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7350                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7351                 mutex_unlock(&priv->mutex);
7352                 return -EIO;
7353         }
7354
7355         spin_lock_irqsave(&priv->lock, flags);
7356
7357         if (priv->ibss_beacon)
7358                 dev_kfree_skb(priv->ibss_beacon);
7359
7360         priv->ibss_beacon = skb;
7361
7362         priv->assoc_id = 0;
7363
7364         IWL_DEBUG_MAC80211("leave\n");
7365         spin_unlock_irqrestore(&priv->lock, flags);
7366
7367         iwl3945_reset_qos(priv);
7368
7369         queue_work(priv->workqueue, &priv->post_associate.work);
7370
7371         mutex_unlock(&priv->mutex);
7372
7373         return 0;
7374 }
7375
7376 /*****************************************************************************
7377  *
7378  * sysfs attributes
7379  *
7380  *****************************************************************************/
7381
7382 #ifdef CONFIG_IWL3945_DEBUG
7383
7384 /*
7385  * The following adds a new attribute to the sysfs representation
7386  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7387  * used for controlling the debug level.
7388  *
7389  * See the level definitions in iwl for details.
7390  */
7391
7392 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7393 {
7394         return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7395 }
7396 static ssize_t store_debug_level(struct device_driver *d,
7397                                  const char *buf, size_t count)
7398 {
7399         char *p = (char *)buf;
7400         u32 val;
7401
7402         val = simple_strtoul(p, &p, 0);
7403         if (p == buf)
7404                 printk(KERN_INFO DRV_NAME
7405                        ": %s is not in hex or decimal form.\n", buf);
7406         else
7407                 iwl3945_debug_level = val;
7408
7409         return strnlen(buf, count);
7410 }
7411
7412 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7413                    show_debug_level, store_debug_level);
7414
7415 #endif /* CONFIG_IWL3945_DEBUG */
7416
7417 static ssize_t show_temperature(struct device *d,
7418                                 struct device_attribute *attr, char *buf)
7419 {
7420         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7421
7422         if (!iwl3945_is_alive(priv))
7423                 return -EAGAIN;
7424
7425         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7426 }
7427
7428 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7429
7430 static ssize_t show_rs_window(struct device *d,
7431                               struct device_attribute *attr,
7432                               char *buf)
7433 {
7434         struct iwl3945_priv *priv = d->driver_data;
7435         return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7436 }
7437 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7438
7439 static ssize_t show_tx_power(struct device *d,
7440                              struct device_attribute *attr, char *buf)
7441 {
7442         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7443         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7444 }
7445
7446 static ssize_t store_tx_power(struct device *d,
7447                               struct device_attribute *attr,
7448                               const char *buf, size_t count)
7449 {
7450         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7451         char *p = (char *)buf;
7452         u32 val;
7453
7454         val = simple_strtoul(p, &p, 10);
7455         if (p == buf)
7456                 printk(KERN_INFO DRV_NAME
7457                        ": %s is not in decimal form.\n", buf);
7458         else
7459                 iwl3945_hw_reg_set_txpower(priv, val);
7460
7461         return count;
7462 }
7463
7464 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7465
7466 static ssize_t show_flags(struct device *d,
7467                           struct device_attribute *attr, char *buf)
7468 {
7469         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7470
7471         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7472 }
7473
7474 static ssize_t store_flags(struct device *d,
7475                            struct device_attribute *attr,
7476                            const char *buf, size_t count)
7477 {
7478         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7479         u32 flags = simple_strtoul(buf, NULL, 0);
7480
7481         mutex_lock(&priv->mutex);
7482         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7483                 /* Cancel any currently running scans... */
7484                 if (iwl3945_scan_cancel_timeout(priv, 100))
7485                         IWL_WARNING("Could not cancel scan.\n");
7486                 else {
7487                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7488                                        flags);
7489                         priv->staging_rxon.flags = cpu_to_le32(flags);
7490                         iwl3945_commit_rxon(priv);
7491                 }
7492         }
7493         mutex_unlock(&priv->mutex);
7494
7495         return count;
7496 }
7497
7498 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7499
7500 static ssize_t show_filter_flags(struct device *d,
7501                                  struct device_attribute *attr, char *buf)
7502 {
7503         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7504
7505         return sprintf(buf, "0x%04X\n",
7506                 le32_to_cpu(priv->active_rxon.filter_flags));
7507 }
7508
7509 static ssize_t store_filter_flags(struct device *d,
7510                                   struct device_attribute *attr,
7511                                   const char *buf, size_t count)
7512 {
7513         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7514         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7515
7516         mutex_lock(&priv->mutex);
7517         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7518                 /* Cancel any currently running scans... */
7519                 if (iwl3945_scan_cancel_timeout(priv, 100))
7520                         IWL_WARNING("Could not cancel scan.\n");
7521                 else {
7522                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7523                                        "0x%04X\n", filter_flags);
7524                         priv->staging_rxon.filter_flags =
7525                                 cpu_to_le32(filter_flags);
7526                         iwl3945_commit_rxon(priv);
7527                 }
7528         }
7529         mutex_unlock(&priv->mutex);
7530
7531         return count;
7532 }
7533
7534 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7535                    store_filter_flags);
7536
7537 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7538
7539 static ssize_t show_measurement(struct device *d,
7540                                 struct device_attribute *attr, char *buf)
7541 {
7542         struct iwl3945_priv *priv = dev_get_drvdata(d);
7543         struct iwl3945_spectrum_notification measure_report;
7544         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7545         u8 *data = (u8 *) & measure_report;
7546         unsigned long flags;
7547
7548         spin_lock_irqsave(&priv->lock, flags);
7549         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7550                 spin_unlock_irqrestore(&priv->lock, flags);
7551                 return 0;
7552         }
7553         memcpy(&measure_report, &priv->measure_report, size);
7554         priv->measurement_status = 0;
7555         spin_unlock_irqrestore(&priv->lock, flags);
7556
7557         while (size && (PAGE_SIZE - len)) {
7558                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7559                                    PAGE_SIZE - len, 1);
7560                 len = strlen(buf);
7561                 if (PAGE_SIZE - len)
7562                         buf[len++] = '\n';
7563
7564                 ofs += 16;
7565                 size -= min(size, 16U);
7566         }
7567
7568         return len;
7569 }
7570
7571 static ssize_t store_measurement(struct device *d,
7572                                  struct device_attribute *attr,
7573                                  const char *buf, size_t count)
7574 {
7575         struct iwl3945_priv *priv = dev_get_drvdata(d);
7576         struct ieee80211_measurement_params params = {
7577                 .channel = le16_to_cpu(priv->active_rxon.channel),
7578                 .start_time = cpu_to_le64(priv->last_tsf),
7579                 .duration = cpu_to_le16(1),
7580         };
7581         u8 type = IWL_MEASURE_BASIC;
7582         u8 buffer[32];
7583         u8 channel;
7584
7585         if (count) {
7586                 char *p = buffer;
7587                 strncpy(buffer, buf, min(sizeof(buffer), count));
7588                 channel = simple_strtoul(p, NULL, 0);
7589                 if (channel)
7590                         params.channel = channel;
7591
7592                 p = buffer;
7593                 while (*p && *p != ' ')
7594                         p++;
7595                 if (*p)
7596                         type = simple_strtoul(p + 1, NULL, 0);
7597         }
7598
7599         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7600                        "channel %d (for '%s')\n", type, params.channel, buf);
7601         iwl3945_get_measurement(priv, &params, type);
7602
7603         return count;
7604 }
7605
7606 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7607                    show_measurement, store_measurement);
7608 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7609
7610 static ssize_t store_retry_rate(struct device *d,
7611                                 struct device_attribute *attr,
7612                                 const char *buf, size_t count)
7613 {
7614         struct iwl3945_priv *priv = dev_get_drvdata(d);
7615
7616         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7617         if (priv->retry_rate <= 0)
7618                 priv->retry_rate = 1;
7619
7620         return count;
7621 }
7622
7623 static ssize_t show_retry_rate(struct device *d,
7624                                struct device_attribute *attr, char *buf)
7625 {
7626         struct iwl3945_priv *priv = dev_get_drvdata(d);
7627         return sprintf(buf, "%d", priv->retry_rate);
7628 }
7629
7630 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7631                    store_retry_rate);
7632
7633 static ssize_t store_power_level(struct device *d,
7634                                  struct device_attribute *attr,
7635                                  const char *buf, size_t count)
7636 {
7637         struct iwl3945_priv *priv = dev_get_drvdata(d);
7638         int rc;
7639         int mode;
7640
7641         mode = simple_strtoul(buf, NULL, 0);
7642         mutex_lock(&priv->mutex);
7643
7644         if (!iwl3945_is_ready(priv)) {
7645                 rc = -EAGAIN;
7646                 goto out;
7647         }
7648
7649         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7650                 mode = IWL_POWER_AC;
7651         else
7652                 mode |= IWL_POWER_ENABLED;
7653
7654         if (mode != priv->power_mode) {
7655                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7656                 if (rc) {
7657                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7658                         goto out;
7659                 }
7660                 priv->power_mode = mode;
7661         }
7662
7663         rc = count;
7664
7665  out:
7666         mutex_unlock(&priv->mutex);
7667         return rc;
7668 }
7669
7670 #define MAX_WX_STRING 80
7671
7672 /* Values are in microsecond */
7673 static const s32 timeout_duration[] = {
7674         350000,
7675         250000,
7676         75000,
7677         37000,
7678         25000,
7679 };
7680 static const s32 period_duration[] = {
7681         400000,
7682         700000,
7683         1000000,
7684         1000000,
7685         1000000
7686 };
7687
7688 static ssize_t show_power_level(struct device *d,
7689                                 struct device_attribute *attr, char *buf)
7690 {
7691         struct iwl3945_priv *priv = dev_get_drvdata(d);
7692         int level = IWL_POWER_LEVEL(priv->power_mode);
7693         char *p = buf;
7694
7695         p += sprintf(p, "%d ", level);
7696         switch (level) {
7697         case IWL_POWER_MODE_CAM:
7698         case IWL_POWER_AC:
7699                 p += sprintf(p, "(AC)");
7700                 break;
7701         case IWL_POWER_BATTERY:
7702                 p += sprintf(p, "(BATTERY)");
7703                 break;
7704         default:
7705                 p += sprintf(p,
7706                              "(Timeout %dms, Period %dms)",
7707                              timeout_duration[level - 1] / 1000,
7708                              period_duration[level - 1] / 1000);
7709         }
7710
7711         if (!(priv->power_mode & IWL_POWER_ENABLED))
7712                 p += sprintf(p, " OFF\n");
7713         else
7714                 p += sprintf(p, " \n");
7715
7716         return (p - buf + 1);
7717
7718 }
7719
7720 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7721                    store_power_level);
7722
7723 static ssize_t show_channels(struct device *d,
7724                              struct device_attribute *attr, char *buf)
7725 {
7726         /* all this shit doesn't belong into sysfs anyway */
7727         return 0;
7728 }
7729
7730 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7731
7732 static ssize_t show_statistics(struct device *d,
7733                                struct device_attribute *attr, char *buf)
7734 {
7735         struct iwl3945_priv *priv = dev_get_drvdata(d);
7736         u32 size = sizeof(struct iwl3945_notif_statistics);
7737         u32 len = 0, ofs = 0;
7738         u8 *data = (u8 *) & priv->statistics;
7739         int rc = 0;
7740
7741         if (!iwl3945_is_alive(priv))
7742                 return -EAGAIN;
7743
7744         mutex_lock(&priv->mutex);
7745         rc = iwl3945_send_statistics_request(priv);
7746         mutex_unlock(&priv->mutex);
7747
7748         if (rc) {
7749                 len = sprintf(buf,
7750                               "Error sending statistics request: 0x%08X\n", rc);
7751                 return len;
7752         }
7753
7754         while (size && (PAGE_SIZE - len)) {
7755                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7756                                    PAGE_SIZE - len, 1);
7757                 len = strlen(buf);
7758                 if (PAGE_SIZE - len)
7759                         buf[len++] = '\n';
7760
7761                 ofs += 16;
7762                 size -= min(size, 16U);
7763         }
7764
7765         return len;
7766 }
7767
7768 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7769
7770 static ssize_t show_antenna(struct device *d,
7771                             struct device_attribute *attr, char *buf)
7772 {
7773         struct iwl3945_priv *priv = dev_get_drvdata(d);
7774
7775         if (!iwl3945_is_alive(priv))
7776                 return -EAGAIN;
7777
7778         return sprintf(buf, "%d\n", priv->antenna);
7779 }
7780
7781 static ssize_t store_antenna(struct device *d,
7782                              struct device_attribute *attr,
7783                              const char *buf, size_t count)
7784 {
7785         int ant;
7786         struct iwl3945_priv *priv = dev_get_drvdata(d);
7787
7788         if (count == 0)
7789                 return 0;
7790
7791         if (sscanf(buf, "%1i", &ant) != 1) {
7792                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7793                 return count;
7794         }
7795
7796         if ((ant >= 0) && (ant <= 2)) {
7797                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7798                 priv->antenna = (enum iwl3945_antenna)ant;
7799         } else
7800                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7801
7802
7803         return count;
7804 }
7805
7806 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7807
7808 static ssize_t show_status(struct device *d,
7809                            struct device_attribute *attr, char *buf)
7810 {
7811         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7812         if (!iwl3945_is_alive(priv))
7813                 return -EAGAIN;
7814         return sprintf(buf, "0x%08x\n", (int)priv->status);
7815 }
7816
7817 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7818
7819 static ssize_t dump_error_log(struct device *d,
7820                               struct device_attribute *attr,
7821                               const char *buf, size_t count)
7822 {
7823         char *p = (char *)buf;
7824
7825         if (p[0] == '1')
7826                 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
7827
7828         return strnlen(buf, count);
7829 }
7830
7831 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7832
7833 static ssize_t dump_event_log(struct device *d,
7834                               struct device_attribute *attr,
7835                               const char *buf, size_t count)
7836 {
7837         char *p = (char *)buf;
7838
7839         if (p[0] == '1')
7840                 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
7841
7842         return strnlen(buf, count);
7843 }
7844
7845 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7846
7847 /*****************************************************************************
7848  *
7849  * driver setup and teardown
7850  *
7851  *****************************************************************************/
7852
7853 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
7854 {
7855         priv->workqueue = create_workqueue(DRV_NAME);
7856
7857         init_waitqueue_head(&priv->wait_command_queue);
7858
7859         INIT_WORK(&priv->up, iwl3945_bg_up);
7860         INIT_WORK(&priv->restart, iwl3945_bg_restart);
7861         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7862         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7863         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7864         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7865         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7866         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7867         INIT_WORK(&priv->set_monitor, iwl3945_bg_set_monitor);
7868         INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
7869         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7870         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7871         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7872
7873         iwl3945_hw_setup_deferred_work(priv);
7874
7875         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7876                      iwl3945_irq_tasklet, (unsigned long)priv);
7877 }
7878
7879 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
7880 {
7881         iwl3945_hw_cancel_deferred_work(priv);
7882
7883         cancel_delayed_work_sync(&priv->init_alive_start);
7884         cancel_delayed_work(&priv->scan_check);
7885         cancel_delayed_work(&priv->alive_start);
7886         cancel_delayed_work(&priv->post_associate);
7887         cancel_work_sync(&priv->beacon_update);
7888 }
7889
7890 static struct attribute *iwl3945_sysfs_entries[] = {
7891         &dev_attr_antenna.attr,
7892         &dev_attr_channels.attr,
7893         &dev_attr_dump_errors.attr,
7894         &dev_attr_dump_events.attr,
7895         &dev_attr_flags.attr,
7896         &dev_attr_filter_flags.attr,
7897 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7898         &dev_attr_measurement.attr,
7899 #endif
7900         &dev_attr_power_level.attr,
7901         &dev_attr_retry_rate.attr,
7902         &dev_attr_rs_window.attr,
7903         &dev_attr_statistics.attr,
7904         &dev_attr_status.attr,
7905         &dev_attr_temperature.attr,
7906         &dev_attr_tx_power.attr,
7907
7908         NULL
7909 };
7910
7911 static struct attribute_group iwl3945_attribute_group = {
7912         .name = NULL,           /* put in device directory */
7913         .attrs = iwl3945_sysfs_entries,
7914 };
7915
7916 static struct ieee80211_ops iwl3945_hw_ops = {
7917         .tx = iwl3945_mac_tx,
7918         .start = iwl3945_mac_start,
7919         .stop = iwl3945_mac_stop,
7920         .add_interface = iwl3945_mac_add_interface,
7921         .remove_interface = iwl3945_mac_remove_interface,
7922         .config = iwl3945_mac_config,
7923         .config_interface = iwl3945_mac_config_interface,
7924         .configure_filter = iwl3945_configure_filter,
7925         .set_key = iwl3945_mac_set_key,
7926         .get_stats = iwl3945_mac_get_stats,
7927         .get_tx_stats = iwl3945_mac_get_tx_stats,
7928         .conf_tx = iwl3945_mac_conf_tx,
7929         .get_tsf = iwl3945_mac_get_tsf,
7930         .reset_tsf = iwl3945_mac_reset_tsf,
7931         .beacon_update = iwl3945_mac_beacon_update,
7932         .hw_scan = iwl3945_mac_hw_scan
7933 };
7934
7935 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7936 {
7937         int err = 0;
7938         struct iwl3945_priv *priv;
7939         struct ieee80211_hw *hw;
7940         struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
7941         int i;
7942         unsigned long flags;
7943         DECLARE_MAC_BUF(mac);
7944
7945         /* Disabling hardware scan means that mac80211 will perform scans
7946          * "the hard way", rather than using device's scan. */
7947         if (iwl3945_param_disable_hw_scan) {
7948                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7949                 iwl3945_hw_ops.hw_scan = NULL;
7950         }
7951
7952         if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
7953             (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
7954                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7955                           IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7956                 err = -EINVAL;
7957                 goto out;
7958         }
7959
7960         /* mac80211 allocates memory for this device instance, including
7961          *   space for this driver's private structure */
7962         hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
7963         if (hw == NULL) {
7964                 IWL_ERROR("Can not allocate network device\n");
7965                 err = -ENOMEM;
7966                 goto out;
7967         }
7968         SET_IEEE80211_DEV(hw, &pdev->dev);
7969
7970         hw->rate_control_algorithm = "iwl-3945-rs";
7971
7972         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7973         priv = hw->priv;
7974         priv->hw = hw;
7975
7976         priv->pci_dev = pdev;
7977         priv->cfg = cfg;
7978
7979         /* Select antenna (may be helpful if only one antenna is connected) */
7980         priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
7981 #ifdef CONFIG_IWL3945_DEBUG
7982         iwl3945_debug_level = iwl3945_param_debug;
7983         atomic_set(&priv->restrict_refcnt, 0);
7984 #endif
7985         priv->retry_rate = 1;
7986
7987         priv->ibss_beacon = NULL;
7988
7989         /* Tell mac80211 our characteristics */
7990         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
7991                     IEEE80211_HW_SIGNAL_DBM |
7992                     IEEE80211_HW_NOISE_DBM;
7993
7994         /* 4 EDCA QOS priorities */
7995         hw->queues = 4;
7996
7997         spin_lock_init(&priv->lock);
7998         spin_lock_init(&priv->power_data.lock);
7999         spin_lock_init(&priv->sta_lock);
8000         spin_lock_init(&priv->hcmd_lock);
8001
8002         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8003                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8004
8005         INIT_LIST_HEAD(&priv->free_frames);
8006
8007         mutex_init(&priv->mutex);
8008         if (pci_enable_device(pdev)) {
8009                 err = -ENODEV;
8010                 goto out_ieee80211_free_hw;
8011         }
8012
8013         pci_set_master(pdev);
8014
8015         /* Clear the driver's (not device's) station table */
8016         iwl3945_clear_stations_table(priv);
8017
8018         priv->data_retry_limit = -1;
8019         priv->ieee_channels = NULL;
8020         priv->ieee_rates = NULL;
8021         priv->band = IEEE80211_BAND_2GHZ;
8022
8023         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8024         if (!err)
8025                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8026         if (err) {
8027                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8028                 goto out_pci_disable_device;
8029         }
8030
8031         pci_set_drvdata(pdev, priv);
8032         err = pci_request_regions(pdev, DRV_NAME);
8033         if (err)
8034                 goto out_pci_disable_device;
8035
8036         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8037          * PCI Tx retries from interfering with C3 CPU state */
8038         pci_write_config_byte(pdev, 0x41, 0x00);
8039
8040         priv->hw_base = pci_iomap(pdev, 0, 0);
8041         if (!priv->hw_base) {
8042                 err = -ENODEV;
8043                 goto out_pci_release_regions;
8044         }
8045
8046         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8047                         (unsigned long long) pci_resource_len(pdev, 0));
8048         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8049
8050         /* Initialize module parameter values here */
8051
8052         /* Disable radio (SW RF KILL) via parameter when loading driver */
8053         if (iwl3945_param_disable) {
8054                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8055                 IWL_DEBUG_INFO("Radio disabled.\n");
8056         }
8057
8058         priv->iw_mode = IEEE80211_IF_TYPE_STA;
8059
8060         printk(KERN_INFO DRV_NAME
8061                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8062
8063         /* Device-specific setup */
8064         if (iwl3945_hw_set_hw_setting(priv)) {
8065                 IWL_ERROR("failed to set hw settings\n");
8066                 goto out_iounmap;
8067         }
8068
8069         if (iwl3945_param_qos_enable)
8070                 priv->qos_data.qos_enable = 1;
8071
8072         iwl3945_reset_qos(priv);
8073
8074         priv->qos_data.qos_active = 0;
8075         priv->qos_data.qos_cap.val = 0;
8076
8077         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8078         iwl3945_setup_deferred_work(priv);
8079         iwl3945_setup_rx_handlers(priv);
8080
8081         priv->rates_mask = IWL_RATES_MASK;
8082         /* If power management is turned on, default to AC mode */
8083         priv->power_mode = IWL_POWER_AC;
8084         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8085
8086         spin_lock_irqsave(&priv->lock, flags);
8087         iwl3945_disable_interrupts(priv);
8088         spin_unlock_irqrestore(&priv->lock, flags);
8089
8090         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8091         if (err) {
8092                 IWL_ERROR("failed to create sysfs device attributes\n");
8093                 goto out_release_irq;
8094         }
8095
8096         /* nic init */
8097         iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8098                     CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8099
8100         iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8101         err = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
8102                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8103                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8104         if (err < 0) {
8105                 IWL_DEBUG_INFO("Failed to init the card\n");
8106                 goto out_remove_sysfs;
8107         }
8108         /* Read the EEPROM */
8109         err = iwl3945_eeprom_init(priv);
8110         if (err) {
8111                 IWL_ERROR("Unable to init EEPROM\n");
8112                 goto out_remove_sysfs;
8113         }
8114         /* MAC Address location in EEPROM same for 3945/4965 */
8115         get_eeprom_mac(priv, priv->mac_addr);
8116         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8117         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8118
8119         err = iwl3945_init_channel_map(priv);
8120         if (err) {
8121                 IWL_ERROR("initializing regulatory failed: %d\n", err);
8122                 goto out_remove_sysfs;
8123         }
8124
8125         err = iwl3945_init_geos(priv);
8126         if (err) {
8127                 IWL_ERROR("initializing geos failed: %d\n", err);
8128                 goto out_free_channel_map;
8129         }
8130
8131         err = ieee80211_register_hw(priv->hw);
8132         if (err) {
8133                 IWL_ERROR("Failed to register network device (error %d)\n", err);
8134                 goto out_free_geos;
8135         }
8136
8137         priv->hw->conf.beacon_int = 100;
8138         priv->mac80211_registered = 1;
8139         pci_save_state(pdev);
8140         pci_disable_device(pdev);
8141
8142         err = iwl3945_rfkill_init(priv);
8143         if (err)
8144                 IWL_ERROR("Unable to initialize RFKILL system. "
8145                                   "Ignoring error: %d\n", err);
8146
8147         return 0;
8148
8149  out_free_geos:
8150         iwl3945_free_geos(priv);
8151  out_free_channel_map:
8152         iwl3945_free_channel_map(priv);
8153  out_remove_sysfs:
8154         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8155
8156  out_release_irq:
8157         destroy_workqueue(priv->workqueue);
8158         priv->workqueue = NULL;
8159         iwl3945_unset_hw_setting(priv);
8160
8161  out_iounmap:
8162         pci_iounmap(pdev, priv->hw_base);
8163  out_pci_release_regions:
8164         pci_release_regions(pdev);
8165  out_pci_disable_device:
8166         pci_disable_device(pdev);
8167         pci_set_drvdata(pdev, NULL);
8168  out_ieee80211_free_hw:
8169         ieee80211_free_hw(priv->hw);
8170  out:
8171         return err;
8172 }
8173
8174 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
8175 {
8176         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8177         struct list_head *p, *q;
8178         int i;
8179         unsigned long flags;
8180
8181         if (!priv)
8182                 return;
8183
8184         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8185
8186         set_bit(STATUS_EXIT_PENDING, &priv->status);
8187
8188         iwl3945_down(priv);
8189
8190         /* make sure we flush any pending irq or
8191          * tasklet for the driver
8192          */
8193         spin_lock_irqsave(&priv->lock, flags);
8194         iwl3945_disable_interrupts(priv);
8195         spin_unlock_irqrestore(&priv->lock, flags);
8196
8197         iwl_synchronize_irq(priv);
8198
8199         /* Free MAC hash list for ADHOC */
8200         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8201                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8202                         list_del(p);
8203                         kfree(list_entry(p, struct iwl3945_ibss_seq, list));
8204                 }
8205         }
8206
8207         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8208
8209         iwl3945_rfkill_unregister(priv);
8210         iwl3945_dealloc_ucode_pci(priv);
8211
8212         if (priv->rxq.bd)
8213                 iwl3945_rx_queue_free(priv, &priv->rxq);
8214         iwl3945_hw_txq_ctx_free(priv);
8215
8216         iwl3945_unset_hw_setting(priv);
8217         iwl3945_clear_stations_table(priv);
8218
8219         if (priv->mac80211_registered) {
8220                 ieee80211_unregister_hw(priv->hw);
8221         }
8222
8223         /*netif_stop_queue(dev); */
8224         flush_workqueue(priv->workqueue);
8225
8226         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8227          * priv->workqueue... so we can't take down the workqueue
8228          * until now... */
8229         destroy_workqueue(priv->workqueue);
8230         priv->workqueue = NULL;
8231
8232         pci_iounmap(pdev, priv->hw_base);
8233         pci_release_regions(pdev);
8234         pci_disable_device(pdev);
8235         pci_set_drvdata(pdev, NULL);
8236
8237         iwl3945_free_channel_map(priv);
8238         iwl3945_free_geos(priv);
8239         kfree(priv->scan);
8240         if (priv->ibss_beacon)
8241                 dev_kfree_skb(priv->ibss_beacon);
8242
8243         ieee80211_free_hw(priv->hw);
8244 }
8245
8246 #ifdef CONFIG_PM
8247
8248 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8249 {
8250         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8251
8252         if (priv->is_open) {
8253                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8254                 iwl3945_mac_stop(priv->hw);
8255                 priv->is_open = 1;
8256         }
8257
8258         pci_set_power_state(pdev, PCI_D3hot);
8259
8260         return 0;
8261 }
8262
8263 static int iwl3945_pci_resume(struct pci_dev *pdev)
8264 {
8265         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8266
8267         pci_set_power_state(pdev, PCI_D0);
8268
8269         if (priv->is_open)
8270                 iwl3945_mac_start(priv->hw);
8271
8272         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8273         return 0;
8274 }
8275
8276 #endif /* CONFIG_PM */
8277
8278 /*************** RFKILL FUNCTIONS **********/
8279 #ifdef CONFIG_IWLWIFI_RFKILL
8280 /* software rf-kill from user */
8281 static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
8282 {
8283         struct iwl3945_priv *priv = data;
8284         int err = 0;
8285
8286         if (!priv->rfkill_mngr.rfkill)
8287         return 0;
8288
8289         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
8290                 return 0;
8291
8292         IWL_DEBUG_RF_KILL("we recieved soft RFKILL set to state %d\n", state);
8293         mutex_lock(&priv->mutex);
8294
8295         switch (state) {
8296         case RFKILL_STATE_UNBLOCKED:
8297                 iwl3945_radio_kill_sw(priv, 0);
8298                 /* if HW rf-kill is set dont allow ON state */
8299                 if (iwl3945_is_rfkill(priv))
8300                         err = -EBUSY;
8301                 break;
8302         case RFKILL_STATE_SOFT_BLOCKED:
8303                 iwl3945_radio_kill_sw(priv, 1);
8304                 if (!iwl3945_is_rfkill(priv))
8305                         err = -EBUSY;
8306                 break;
8307         default:
8308                 IWL_WARNING("we recieved unexpected RFKILL state %d\n", state);
8309                 break;
8310         }
8311         mutex_unlock(&priv->mutex);
8312
8313         return err;
8314 }
8315
8316 int iwl3945_rfkill_init(struct iwl3945_priv *priv)
8317 {
8318         struct device *device = wiphy_dev(priv->hw->wiphy);
8319         int ret = 0;
8320
8321         BUG_ON(device == NULL);
8322
8323         IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
8324         priv->rfkill_mngr.rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
8325         if (!priv->rfkill_mngr.rfkill) {
8326                 IWL_ERROR("Unable to allocate rfkill device.\n");
8327                 ret = -ENOMEM;
8328                 goto error;
8329         }
8330
8331         priv->rfkill_mngr.rfkill->name = priv->cfg->name;
8332         priv->rfkill_mngr.rfkill->data = priv;
8333         priv->rfkill_mngr.rfkill->state = RFKILL_STATE_ON;
8334         priv->rfkill_mngr.rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
8335         priv->rfkill_mngr.rfkill->user_claim_unsupported = 1;
8336
8337         priv->rfkill_mngr.rfkill->dev.class->suspend = NULL;
8338         priv->rfkill_mngr.rfkill->dev.class->resume = NULL;
8339
8340         priv->rfkill_mngr.input_dev = input_allocate_device();
8341         if (!priv->rfkill_mngr.input_dev) {
8342                 IWL_ERROR("Unable to allocate rfkill input device.\n");
8343                 ret = -ENOMEM;
8344                 goto freed_rfkill;
8345         }
8346
8347         priv->rfkill_mngr.input_dev->name = priv->cfg->name;
8348         priv->rfkill_mngr.input_dev->phys = wiphy_name(priv->hw->wiphy);
8349         priv->rfkill_mngr.input_dev->id.bustype = BUS_HOST;
8350         priv->rfkill_mngr.input_dev->id.vendor = priv->pci_dev->vendor;
8351         priv->rfkill_mngr.input_dev->dev.parent = device;
8352         priv->rfkill_mngr.input_dev->evbit[0] = BIT(EV_KEY);
8353         set_bit(KEY_WLAN, priv->rfkill_mngr.input_dev->keybit);
8354
8355         ret = rfkill_register(priv->rfkill_mngr.rfkill);
8356         if (ret) {
8357                 IWL_ERROR("Unable to register rfkill: %d\n", ret);
8358                 goto free_input_dev;
8359         }
8360
8361         ret = input_register_device(priv->rfkill_mngr.input_dev);
8362         if (ret) {
8363                 IWL_ERROR("Unable to register rfkill input device: %d\n", ret);
8364                 goto unregister_rfkill;
8365         }
8366
8367         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8368         return ret;
8369
8370 unregister_rfkill:
8371         rfkill_unregister(priv->rfkill_mngr.rfkill);
8372         priv->rfkill_mngr.rfkill = NULL;
8373
8374 free_input_dev:
8375         input_free_device(priv->rfkill_mngr.input_dev);
8376         priv->rfkill_mngr.input_dev = NULL;
8377
8378 freed_rfkill:
8379         if (priv->rfkill_mngr.rfkill != NULL)
8380                 rfkill_free(priv->rfkill_mngr.rfkill);
8381         priv->rfkill_mngr.rfkill = NULL;
8382
8383 error:
8384         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8385         return ret;
8386 }
8387
8388 void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
8389 {
8390
8391         if (priv->rfkill_mngr.input_dev)
8392                 input_unregister_device(priv->rfkill_mngr.input_dev);
8393
8394         if (priv->rfkill_mngr.rfkill)
8395                 rfkill_unregister(priv->rfkill_mngr.rfkill);
8396
8397         priv->rfkill_mngr.input_dev = NULL;
8398         priv->rfkill_mngr.rfkill = NULL;
8399 }
8400
8401 /* set rf-kill to the right state. */
8402 void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
8403 {
8404
8405         if (!priv->rfkill_mngr.rfkill)
8406                 return;
8407
8408         if (!iwl3945_is_rfkill(priv))
8409                 priv->rfkill_mngr.rfkill->state = RFKILL_STATE_ON;
8410         else
8411                 priv->rfkill_mngr.rfkill->state = RFKILL_STATE_OFF;
8412 }
8413 #endif
8414
8415 /*****************************************************************************
8416  *
8417  * driver and module entry point
8418  *
8419  *****************************************************************************/
8420
8421 static struct pci_driver iwl3945_driver = {
8422         .name = DRV_NAME,
8423         .id_table = iwl3945_hw_card_ids,
8424         .probe = iwl3945_pci_probe,
8425         .remove = __devexit_p(iwl3945_pci_remove),
8426 #ifdef CONFIG_PM
8427         .suspend = iwl3945_pci_suspend,
8428         .resume = iwl3945_pci_resume,
8429 #endif
8430 };
8431
8432 static int __init iwl3945_init(void)
8433 {
8434
8435         int ret;
8436         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8437         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8438
8439         ret = iwl3945_rate_control_register();
8440         if (ret) {
8441                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
8442                 return ret;
8443         }
8444
8445         ret = pci_register_driver(&iwl3945_driver);
8446         if (ret) {
8447                 IWL_ERROR("Unable to initialize PCI module\n");
8448                 goto error_register;
8449         }
8450 #ifdef CONFIG_IWL3945_DEBUG
8451         ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8452         if (ret) {
8453                 IWL_ERROR("Unable to create driver sysfs file\n");
8454                 goto error_debug;
8455         }
8456 #endif
8457
8458         return ret;
8459
8460 #ifdef CONFIG_IWL3945_DEBUG
8461 error_debug:
8462         pci_unregister_driver(&iwl3945_driver);
8463 #endif
8464 error_register:
8465         iwl3945_rate_control_unregister();
8466         return ret;
8467 }
8468
8469 static void __exit iwl3945_exit(void)
8470 {
8471 #ifdef CONFIG_IWL3945_DEBUG
8472         driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8473 #endif
8474         pci_unregister_driver(&iwl3945_driver);
8475         iwl3945_rate_control_unregister();
8476 }
8477
8478 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8479 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8480 module_param_named(disable, iwl3945_param_disable, int, 0444);
8481 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8482 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8483 MODULE_PARM_DESC(hwcrypto,
8484                  "using hardware crypto engine (default 0 [software])\n");
8485 module_param_named(debug, iwl3945_param_debug, int, 0444);
8486 MODULE_PARM_DESC(debug, "debug output mask");
8487 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8488 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8489
8490 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8491 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8492
8493 /* QoS */
8494 module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
8495 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8496
8497 module_exit(iwl3945_exit);
8498 module_init(iwl3945_init);