SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl3945-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2007 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.h"
  50 #include "iwl-helpers.h"
  51
  52 #ifdef CONFIG_IWL3945_DEBUG
  53 u32 iwl3945_debug_level;
  54 #endif
  55
  56 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
  57                                   struct iwl3945_tx_queue *txq);
  58
  59 /******************************************************************************
  60  *
  61  * module boiler plate
  62  *
  63  ******************************************************************************/
  64
  65 /* module parameters */
  66 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
  67 static int iwl3945_param_debug;    /* def: 0 = minimal debug log messages */
  68 static int iwl3945_param_disable;  /* def: 0 = enable radio */
  69 static int iwl3945_param_antenna;  /* def: 0 = both antennas (use diversity) */
  70 int iwl3945_param_hwcrypto;        /* def: 0 = use software encryption */
  71 static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
  72 int iwl3945_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 8 Tx queues */
  73
  74 /*
  75  * module name, copyright, version, etc.
  76  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  77  */
  78
  79 #define DRV_DESCRIPTION \
  80 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  81
  82 #ifdef CONFIG_IWL3945_DEBUG
  83 #define VD "d"
  84 #else
  85 #define VD
  86 #endif
  87
  88 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  89 #define VS "s"
  90 #else
  91 #define VS
  92 #endif
  93
  94 #define IWLWIFI_VERSION "1.2.26k" VD VS
  95 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
  96 #define DRV_VERSION     IWLWIFI_VERSION
  97
  98 /* Change firmware file name, using "-" and incrementing number,
  99  *   *only* when uCode interface or architecture changes so that it
 100  *   is not compatible with earlier drivers.
 101  * This number will also appear in << 8 position of 1st dword of uCode file */
 102 #define IWL3945_UCODE_API "-1"
 103
 104 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 105 MODULE_VERSION(DRV_VERSION);
 106 MODULE_AUTHOR(DRV_COPYRIGHT);
 107 MODULE_LICENSE("GPL");
 108
 109 static __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
 110 {
 111         u16 fc = le16_to_cpu(hdr->frame_control);
 112         int hdr_len = ieee80211_get_hdrlen(fc);
 113
 114         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 115                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 116         return NULL;
 117 }
 118
 119 static const struct ieee80211_supported_band *iwl3945_get_band(
 120                 struct iwl3945_priv *priv, enum ieee80211_band band)
 121 {
 122         return priv->hw->wiphy->bands[band];
 123 }
 124
 125 static int iwl3945_is_empty_essid(const char *essid, int essid_len)
 126 {
 127         /* Single white space is for Linksys APs */
 128         if (essid_len == 1 && essid[0] == ' ')
 129                 return 1;
 130
 131         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 132         while (essid_len) {
 133                 essid_len--;
 134                 if (essid[essid_len] != '\0')
 135                         return 0;
 136         }
 137
 138         return 1;
 139 }
 140
 141 static const char *iwl3945_escape_essid(const char *essid, u8 essid_len)
 142 {
 143         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 144         const char *s = essid;
 145         char *d = escaped;
 146
 147         if (iwl3945_is_empty_essid(essid, essid_len)) {
 148                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 149                 return escaped;
 150         }
 151
 152         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 153         while (essid_len--) {
 154                 if (*s == '\0') {
 155                         *d++ = '\\';
 156                         *d++ = '0';
 157                         s++;
 158                 } else
 159                         *d++ = *s++;
 160         }
 161         *d = '\0';
 162         return escaped;
 163 }
 164
 165 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 166  * DMA services
 167  *
 168  * Theory of operation
 169  *
 170  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 171  * of buffer descriptors, each of which points to one or more data buffers for
 172  * the device to read from or fill.  Driver and device exchange status of each
 173  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 174  * entries in each circular buffer, to protect against confusing empty and full
 175  * queue states.
 176  *
 177  * The device reads or writes the data in the queues via the device's several
 178  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 179  *
 180  * For Tx queue, there are low mark and high mark limits. If, after queuing
 181  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 182  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 183  * Tx queue resumed.
 184  *
 185  * The 3945 operates with six queues:  One receive queue, one transmit queue
 186  * (#4) for sending commands to the device firmware, and four transmit queues
 187  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 188  ***************************************************/
 189
 190 static int iwl3945_queue_space(const struct iwl3945_queue *q)
 191 {
 192         int s = q->read_ptr - q->write_ptr;
 193
 194         if (q->read_ptr > q->write_ptr)
 195                 s -= q->n_bd;
 196
 197         if (s <= 0)
 198                 s += q->n_window;
 199         /* keep some reserve to not confuse empty and full situations */
 200         s -= 2;
 201         if (s < 0)
 202                 s = 0;
 203         return s;
 204 }
 205
 206 /**
 207  * iwl3945_queue_inc_wrap - increment queue index, wrap back to beginning
 208  * @index -- current index
 209  * @n_bd -- total number of entries in queue (must be power of 2)
 210  */
 211 static inline int iwl3945_queue_inc_wrap(int index, int n_bd)
 212 {
 213         return ++index & (n_bd - 1);
 214 }
 215
 216 /**
 217  * iwl3945_queue_dec_wrap - increment queue index, wrap back to end
 218  * @index -- current index
 219  * @n_bd -- total number of entries in queue (must be power of 2)
 220  */
 221 static inline int iwl3945_queue_dec_wrap(int index, int n_bd)
 222 {
 223         return --index & (n_bd - 1);
 224 }
 225
 226 static inline int x2_queue_used(const struct iwl3945_queue *q, int i)
 227 {
 228         return q->write_ptr > q->read_ptr ?
 229                 (i >= q->read_ptr && i < q->write_ptr) :
 230                 !(i < q->read_ptr && i >= q->write_ptr);
 231 }
 232
 233 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
 234 {
 235         /* This is for scan command, the big buffer at end of command array */
 236         if (is_huge)
 237                 return q->n_window;     /* must be power of 2 */
 238
 239         /* Otherwise, use normal size buffers */
 240         return index & (q->n_window - 1);
 241 }
 242
 243 /**
 244  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 245  */
 246 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
 247                           int count, int slots_num, u32 id)
 248 {
 249         q->n_bd = count;
 250         q->n_window = slots_num;
 251         q->id = id;
 252
 253         /* count must be power-of-two size, otherwise iwl3945_queue_inc_wrap
 254          * and iwl3945_queue_dec_wrap are broken. */
 255         BUG_ON(!is_power_of_2(count));
 256
 257         /* slots_num must be power-of-two size, otherwise
 258          * get_cmd_index is broken. */
 259         BUG_ON(!is_power_of_2(slots_num));
 260
 261         q->low_mark = q->n_window / 4;
 262         if (q->low_mark < 4)
 263                 q->low_mark = 4;
 264
 265         q->high_mark = q->n_window / 8;
 266         if (q->high_mark < 2)
 267                 q->high_mark = 2;
 268
 269         q->write_ptr = q->read_ptr = 0;
 270
 271         return 0;
 272 }
 273
 274 /**
 275  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 276  */
 277 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
 278                               struct iwl3945_tx_queue *txq, u32 id)
 279 {
 280         struct pci_dev *dev = priv->pci_dev;
 281
 282         /* Driver private data, only for Tx (not command) queues,
 283          * not shared with device. */
 284         if (id != IWL_CMD_QUEUE_NUM) {
 285                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 286                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 287                 if (!txq->txb) {
 288                         IWL_ERROR("kmalloc for auxiliary BD "
 289                                   "structures failed\n");
 290                         goto error;
 291                 }
 292         } else
 293                 txq->txb = NULL;
 294
 295         /* Circular buffer of transmit frame descriptors (TFDs),
 296          * shared with device */
 297         txq->bd = pci_alloc_consistent(dev,
 298                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 299                         &txq->q.dma_addr);
 300
 301         if (!txq->bd) {
 302                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 303                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 304                 goto error;
 305         }
 306         txq->q.id = id;
 307
 308         return 0;
 309
 310  error:
 311         if (txq->txb) {
 312                 kfree(txq->txb);
 313                 txq->txb = NULL;
 314         }
 315
 316         return -ENOMEM;
 317 }
 318
 319 /**
 320  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 321  */
 322 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
 323                       struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
 324 {
 325         struct pci_dev *dev = priv->pci_dev;
 326         int len;
 327         int rc = 0;
 328
 329         /*
 330          * Alloc buffer array for commands (Tx or other types of commands).
 331          * For the command queue (#4), allocate command space + one big
 332          * command for scan, since scan command is very huge; the system will
 333          * not have two scans at the same time, so only one is needed.
 334          * For data Tx queues (all other queues), no super-size command
 335          * space is needed.
 336          */
 337         len = sizeof(struct iwl3945_cmd) * slots_num;
 338         if (txq_id == IWL_CMD_QUEUE_NUM)
 339                 len +=  IWL_MAX_SCAN_SIZE;
 340         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 341         if (!txq->cmd)
 342                 return -ENOMEM;
 343
 344         /* Alloc driver data array and TFD circular buffer */
 345         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 346         if (rc) {
 347                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 348
 349                 return -ENOMEM;
 350         }
 351         txq->need_update = 0;
 352
 353         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 354          * iwl3945_queue_inc_wrap and iwl3945_queue_dec_wrap are broken. */
 355         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 356
 357         /* Initialize queue high/low-water, head/tail indexes */
 358         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 359
 360         /* Tell device where to find queue, enable DMA channel. */
 361         iwl3945_hw_tx_queue_init(priv, txq);
 362
 363         return 0;
 364 }
 365
 366 /**
 367  * iwl3945_tx_queue_free - Deallocate DMA queue.
 368  * @txq: Transmit queue to deallocate.
 369  *
 370  * Empty queue by removing and destroying all BD's.
 371  * Free all buffers.
 372  * 0-fill, but do not free "txq" descriptor structure.
 373  */
 374 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
 375 {
 376         struct iwl3945_queue *q = &txq->q;
 377         struct pci_dev *dev = priv->pci_dev;
 378         int len;
 379
 380         if (q->n_bd == 0)
 381                 return;
 382
 383         /* first, empty all BD's */
 384         for (; q->write_ptr != q->read_ptr;
 385              q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd))
 386                 iwl3945_hw_txq_free_tfd(priv, txq);
 387
 388         len = sizeof(struct iwl3945_cmd) * q->n_window;
 389         if (q->id == IWL_CMD_QUEUE_NUM)
 390                 len += IWL_MAX_SCAN_SIZE;
 391
 392         /* De-alloc array of command/tx buffers */
 393         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 394
 395         /* De-alloc circular buffer of TFDs */
 396         if (txq->q.n_bd)
 397                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
 398                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 399
 400         /* De-alloc array of per-TFD driver data */
 401         if (txq->txb) {
 402                 kfree(txq->txb);
 403                 txq->txb = NULL;
 404         }
 405
 406         /* 0-fill queue descriptor structure */
 407         memset(txq, 0, sizeof(*txq));
 408 }
 409
 410 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 411
 412 /*************** STATION TABLE MANAGEMENT ****
 413  * mac80211 should be examined to determine if sta_info is duplicating
 414  * the functionality provided here
 415  */
 416
 417 /**************************************************************/
 418 #if 0 /* temporary disable till we add real remove station */
 419 /**
 420  * iwl3945_remove_station - Remove driver's knowledge of station.
 421  *
 422  * NOTE:  This does not remove station from device's station table.
 423  */
 424 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
 425 {
 426         int index = IWL_INVALID_STATION;
 427         int i;
 428         unsigned long flags;
 429
 430         spin_lock_irqsave(&priv->sta_lock, flags);
 431
 432         if (is_ap)
 433                 index = IWL_AP_ID;
 434         else if (is_broadcast_ether_addr(addr))
 435                 index = priv->hw_setting.bcast_sta_id;
 436         else
 437                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 438                         if (priv->stations[i].used &&
 439                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 440                                                 addr)) {
 441                                 index = i;
 442                                 break;
 443                         }
 444
 445         if (unlikely(index == IWL_INVALID_STATION))
 446                 goto out;
 447
 448         if (priv->stations[index].used) {
 449                 priv->stations[index].used = 0;
 450                 priv->num_stations--;
 451         }
 452
 453         BUG_ON(priv->num_stations < 0);
 454
 455 out:
 456         spin_unlock_irqrestore(&priv->sta_lock, flags);
 457         return 0;
 458 }
 459 #endif
 460
 461 /**
 462  * iwl3945_clear_stations_table - Clear the driver's station table
 463  *
 464  * NOTE:  This does not clear or otherwise alter the device's station table.
 465  */
 466 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
 467 {
 468         unsigned long flags;
 469
 470         spin_lock_irqsave(&priv->sta_lock, flags);
 471
 472         priv->num_stations = 0;
 473         memset(priv->stations, 0, sizeof(priv->stations));
 474
 475         spin_unlock_irqrestore(&priv->sta_lock, flags);
 476 }
 477
 478 /**
 479  * iwl3945_add_station - Add station to station tables in driver and device
 480  */
 481 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
 482 {
 483         int i;
 484         int index = IWL_INVALID_STATION;
 485         struct iwl3945_station_entry *station;
 486         unsigned long flags_spin;
 487         DECLARE_MAC_BUF(mac);
 488         u8 rate;
 489
 490         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 491         if (is_ap)
 492                 index = IWL_AP_ID;
 493         else if (is_broadcast_ether_addr(addr))
 494                 index = priv->hw_setting.bcast_sta_id;
 495         else
 496                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 497                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 498                                                 addr)) {
 499                                 index = i;
 500                                 break;
 501                         }
 502
 503                         if (!priv->stations[i].used &&
 504                             index == IWL_INVALID_STATION)
 505                                 index = i;
 506                 }
 507
 508         /* These two conditions has the same outcome but keep them separate
 509           since they have different meaning */
 510         if (unlikely(index == IWL_INVALID_STATION)) {
 511                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 512                 return index;
 513         }
 514
 515         if (priv->stations[index].used &&
 516            !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 517                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 518                 return index;
 519         }
 520
 521         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 522         station = &priv->stations[index];
 523         station->used = 1;
 524         priv->num_stations++;
 525
 526         /* Set up the REPLY_ADD_STA command to send to device */
 527         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 528         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 529         station->sta.mode = 0;
 530         station->sta.sta.sta_id = index;
 531         station->sta.station_flags = 0;
 532
 533         if (priv->band == IEEE80211_BAND_5GHZ)
 534                 rate = IWL_RATE_6M_PLCP;
 535         else
 536                 rate =  IWL_RATE_1M_PLCP;
 537
 538         /* Turn on both antennas for the station... */
 539         station->sta.rate_n_flags =
 540                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 541         station->current_rate.rate_n_flags =
 542                         le16_to_cpu(station->sta.rate_n_flags);
 543
 544         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 545
 546         /* Add station to device's station table */
 547         iwl3945_send_add_station(priv, &station->sta, flags);
 548         return index;
 549
 550 }
 551
 552 /*************** DRIVER STATUS FUNCTIONS   *****/
 553
 554 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
 555 {
 556         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 557          * set but EXIT_PENDING is not */
 558         return test_bit(STATUS_READY, &priv->status) &&
 559                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 560                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 561 }
 562
 563 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
 564 {
 565         return test_bit(STATUS_ALIVE, &priv->status);
 566 }
 567
 568 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
 569 {
 570         return test_bit(STATUS_INIT, &priv->status);
 571 }
 572
 573 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
 574 {
 575         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 576                test_bit(STATUS_RF_KILL_SW, &priv->status);
 577 }
 578
 579 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
 580 {
 581
 582         if (iwl3945_is_rfkill(priv))
 583                 return 0;
 584
 585         return iwl3945_is_ready(priv);
 586 }
 587
 588 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 589
 590 #define IWL_CMD(x) case x : return #x
 591
 592 static const char *get_cmd_string(u8 cmd)
 593 {
 594         switch (cmd) {
 595                 IWL_CMD(REPLY_ALIVE);
 596                 IWL_CMD(REPLY_ERROR);
 597                 IWL_CMD(REPLY_RXON);
 598                 IWL_CMD(REPLY_RXON_ASSOC);
 599                 IWL_CMD(REPLY_QOS_PARAM);
 600                 IWL_CMD(REPLY_RXON_TIMING);
 601                 IWL_CMD(REPLY_ADD_STA);
 602                 IWL_CMD(REPLY_REMOVE_STA);
 603                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 604                 IWL_CMD(REPLY_3945_RX);
 605                 IWL_CMD(REPLY_TX);
 606                 IWL_CMD(REPLY_RATE_SCALE);
 607                 IWL_CMD(REPLY_LEDS_CMD);
 608                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 609                 IWL_CMD(RADAR_NOTIFICATION);
 610                 IWL_CMD(REPLY_QUIET_CMD);
 611                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 612                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 613                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 614                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 615                 IWL_CMD(POWER_TABLE_CMD);
 616                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 617                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 618                 IWL_CMD(REPLY_SCAN_CMD);
 619                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 620                 IWL_CMD(SCAN_START_NOTIFICATION);
 621                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 622                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 623                 IWL_CMD(BEACON_NOTIFICATION);
 624                 IWL_CMD(REPLY_TX_BEACON);
 625                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 626                 IWL_CMD(QUIET_NOTIFICATION);
 627                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 628                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 629                 IWL_CMD(REPLY_BT_CONFIG);
 630                 IWL_CMD(REPLY_STATISTICS_CMD);
 631                 IWL_CMD(STATISTICS_NOTIFICATION);
 632                 IWL_CMD(REPLY_CARD_STATE_CMD);
 633                 IWL_CMD(CARD_STATE_NOTIFICATION);
 634                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 635         default:
 636                 return "UNKNOWN";
 637
 638         }
 639 }
 640
 641 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 642
 643 /**
 644  * iwl3945_enqueue_hcmd - enqueue a uCode command
 645  * @priv: device private data point
 646  * @cmd: a point to the ucode command structure
 647  *
 648  * The function returns < 0 values to indicate the operation is
 649  * failed. On success, it turns the index (> 0) of command in the
 650  * command queue.
 651  */
 652 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 653 {
 654         struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 655         struct iwl3945_queue *q = &txq->q;
 656         struct iwl3945_tfd_frame *tfd;
 657         u32 *control_flags;
 658         struct iwl3945_cmd *out_cmd;
 659         u32 idx;
 660         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 661         dma_addr_t phys_addr;
 662         int pad;
 663         u16 count;
 664         int ret;
 665         unsigned long flags;
 666
 667         /* If any of the command structures end up being larger than
 668          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 669          * we will need to increase the size of the TFD entries */
 670         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 671                !(cmd->meta.flags & CMD_SIZE_HUGE));
 672
 673
 674         if (iwl3945_is_rfkill(priv)) {
 675                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 676                 return -EIO;
 677         }
 678
 679         if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 680                 IWL_ERROR("No space for Tx\n");
 681                 return -ENOSPC;
 682         }
 683
 684         spin_lock_irqsave(&priv->hcmd_lock, flags);
 685
 686         tfd = &txq->bd[q->write_ptr];
 687         memset(tfd, 0, sizeof(*tfd));
 688
 689         control_flags = (u32 *) tfd;
 690
 691         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 692         out_cmd = &txq->cmd[idx];
 693
 694         out_cmd->hdr.cmd = cmd->id;
 695         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 696         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 697
 698         /* At this point, the out_cmd now has all of the incoming cmd
 699          * information */
 700
 701         out_cmd->hdr.flags = 0;
 702         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 703                         INDEX_TO_SEQ(q->write_ptr));
 704         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 705                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 706
 707         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 708                         offsetof(struct iwl3945_cmd, hdr);
 709         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 710
 711         pad = U32_PAD(cmd->len);
 712         count = TFD_CTL_COUNT_GET(*control_flags);
 713         *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
 714
 715         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 716                      "%d bytes at %d[%d]:%d\n",
 717                      get_cmd_string(out_cmd->hdr.cmd),
 718                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 719                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 720
 721         txq->need_update = 1;
 722
 723         /* Increment and update queue's write index */
 724         q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
 725         ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
 726
 727         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 728         return ret ? ret : idx;
 729 }
 730
 731 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 732 {
 733         int ret;
 734
 735         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 736
 737         /* An asynchronous command can not expect an SKB to be set. */
 738         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 739
 740         /* An asynchronous command MUST have a callback. */
 741         BUG_ON(!cmd->meta.u.callback);
 742
 743         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 744                 return -EBUSY;
 745
 746         ret = iwl3945_enqueue_hcmd(priv, cmd);
 747         if (ret < 0) {
 748                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 749                           get_cmd_string(cmd->id), ret);
 750                 return ret;
 751         }
 752         return 0;
 753 }
 754
 755 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 756 {
 757         int cmd_idx;
 758         int ret;
 759         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 760
 761         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 762
 763          /* A synchronous command can not have a callback set. */
 764         BUG_ON(cmd->meta.u.callback != NULL);
 765
 766         if (atomic_xchg(&entry, 1)) {
 767                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 768                           get_cmd_string(cmd->id));
 769                 return -EBUSY;
 770         }
 771
 772         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 773
 774         if (cmd->meta.flags & CMD_WANT_SKB)
 775                 cmd->meta.source = &cmd->meta;
 776
 777         cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
 778         if (cmd_idx < 0) {
 779                 ret = cmd_idx;
 780                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 781                           get_cmd_string(cmd->id), ret);
 782                 goto out;
 783         }
 784
 785         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 786                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 787                         HOST_COMPLETE_TIMEOUT);
 788         if (!ret) {
 789                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 790                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 791                                   get_cmd_string(cmd->id),
 792                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 793
 794                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 795                         ret = -ETIMEDOUT;
 796                         goto cancel;
 797                 }
 798         }
 799
 800         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 801                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 802                                get_cmd_string(cmd->id));
 803                 ret = -ECANCELED;
 804                 goto fail;
 805         }
 806         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 807                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 808                                get_cmd_string(cmd->id));
 809                 ret = -EIO;
 810                 goto fail;
 811         }
 812         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 813                 IWL_ERROR("Error: Response NULL in '%s'\n",
 814                           get_cmd_string(cmd->id));
 815                 ret = -EIO;
 816                 goto out;
 817         }
 818
 819         ret = 0;
 820         goto out;
 821
 822 cancel:
 823         if (cmd->meta.flags & CMD_WANT_SKB) {
 824                 struct iwl3945_cmd *qcmd;
 825
 826                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 827                  * TX cmd queue. Otherwise in case the cmd comes
 828                  * in later, it will possibly set an invalid
 829                  * address (cmd->meta.source). */
 830                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 831                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 832         }
 833 fail:
 834         if (cmd->meta.u.skb) {
 835                 dev_kfree_skb_any(cmd->meta.u.skb);
 836                 cmd->meta.u.skb = NULL;
 837         }
 838 out:
 839         atomic_set(&entry, 0);
 840         return ret;
 841 }
 842
 843 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 844 {
 845         if (cmd->meta.flags & CMD_ASYNC)
 846                 return iwl3945_send_cmd_async(priv, cmd);
 847
 848         return iwl3945_send_cmd_sync(priv, cmd);
 849 }
 850
 851 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
 852 {
 853         struct iwl3945_host_cmd cmd = {
 854                 .id = id,
 855                 .len = len,
 856                 .data = data,
 857         };
 858
 859         return iwl3945_send_cmd_sync(priv, &cmd);
 860 }
 861
 862 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
 863 {
 864         struct iwl3945_host_cmd cmd = {
 865                 .id = id,
 866                 .len = sizeof(val),
 867                 .data = &val,
 868         };
 869
 870         return iwl3945_send_cmd_sync(priv, &cmd);
 871 }
 872
 873 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
 874 {
 875         return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 876 }
 877
 878 /**
 879  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 880  * @band: 2.4 or 5 GHz band
 881  * @channel: Any channel valid for the requested band
 882
 883  * In addition to setting the staging RXON, priv->band is also set.
 884  *
 885  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 886  * in the staging RXON flag structure based on the band
 887  */
 888 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
 889                                     enum ieee80211_band band,
 890                                     u16 channel)
 891 {
 892         if (!iwl3945_get_channel_info(priv, band, channel)) {
 893                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 894                                channel, band);
 895                 return -EINVAL;
 896         }
 897
 898         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 899             (priv->band == band))
 900                 return 0;
 901
 902         priv->staging_rxon.channel = cpu_to_le16(channel);
 903         if (band == IEEE80211_BAND_5GHZ)
 904                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 905         else
 906                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 907
 908         priv->band = band;
 909
 910         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 911
 912         return 0;
 913 }
 914
 915 /**
 916  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 917  *
 918  * NOTE:  This is really only useful during development and can eventually
 919  * be #ifdef'd out once the driver is stable and folks aren't actively
 920  * making changes
 921  */
 922 static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
 923 {
 924         int error = 0;
 925         int counter = 1;
 926
 927         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 928                 error |= le32_to_cpu(rxon->flags &
 929                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 930                                  RXON_FLG_RADAR_DETECT_MSK));
 931                 if (error)
 932                         IWL_WARNING("check 24G fields %d | %d\n",
 933                                     counter++, error);
 934         } else {
 935                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 936                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 937                 if (error)
 938                         IWL_WARNING("check 52 fields %d | %d\n",
 939                                     counter++, error);
 940                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 941                 if (error)
 942                         IWL_WARNING("check 52 CCK %d | %d\n",
 943                                     counter++, error);
 944         }
 945         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 946         if (error)
 947                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 948
 949         /* make sure basic rates 6Mbps and 1Mbps are supported */
 950         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 951                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 952         if (error)
 953                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 954
 955         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 956         if (error)
 957                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 958
 959         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 960                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 961         if (error)
 962                 IWL_WARNING("check CCK and short slot %d | %d\n",
 963                             counter++, error);
 964
 965         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 966                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 967         if (error)
 968                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 969                             counter++, error);
 970
 971         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 972                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 973         if (error)
 974                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 975                             counter++, error);
 976
 977         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 978                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 979                                 RXON_FLG_ANT_A_MSK)) == 0);
 980         if (error)
 981                 IWL_WARNING("check antenna %d %d\n", counter++, error);
 982
 983         if (error)
 984                 IWL_WARNING("Tuning to channel %d\n",
 985                             le16_to_cpu(rxon->channel));
 986
 987         if (error) {
 988                 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
 989                 return -1;
 990         }
 991         return 0;
 992 }
 993
 994 /**
 995  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 996  * @priv: staging_rxon is compared to active_rxon
 997  *
 998  * If the RXON structure is changing enough to require a new tune,
 999  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1000  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1001  */
1002 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
1003 {
1004
1005         /* These items are only settable from the full RXON command */
1006         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1007             compare_ether_addr(priv->staging_rxon.bssid_addr,
1008                                priv->active_rxon.bssid_addr) ||
1009             compare_ether_addr(priv->staging_rxon.node_addr,
1010                                priv->active_rxon.node_addr) ||
1011             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1012                                priv->active_rxon.wlap_bssid_addr) ||
1013             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1014             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1015             (priv->staging_rxon.air_propagation !=
1016              priv->active_rxon.air_propagation) ||
1017             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1018                 return 1;
1019
1020         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1021          * be updated with the RXON_ASSOC command -- however only some
1022          * flag transitions are allowed using RXON_ASSOC */
1023
1024         /* Check if we are not switching bands */
1025         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1026             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1027                 return 1;
1028
1029         /* Check if we are switching association toggle */
1030         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1031                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1032                 return 1;
1033
1034         return 0;
1035 }
1036
1037 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
1038 {
1039         int rc = 0;
1040         struct iwl3945_rx_packet *res = NULL;
1041         struct iwl3945_rxon_assoc_cmd rxon_assoc;
1042         struct iwl3945_host_cmd cmd = {
1043                 .id = REPLY_RXON_ASSOC,
1044                 .len = sizeof(rxon_assoc),
1045                 .meta.flags = CMD_WANT_SKB,
1046                 .data = &rxon_assoc,
1047         };
1048         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
1049         const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
1050
1051         if ((rxon1->flags == rxon2->flags) &&
1052             (rxon1->filter_flags == rxon2->filter_flags) &&
1053             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1054             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1055                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1056                 return 0;
1057         }
1058
1059         rxon_assoc.flags = priv->staging_rxon.flags;
1060         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1061         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1062         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1063         rxon_assoc.reserved = 0;
1064
1065         rc = iwl3945_send_cmd_sync(priv, &cmd);
1066         if (rc)
1067                 return rc;
1068
1069         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1070         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1071                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1072                 rc = -EIO;
1073         }
1074
1075         priv->alloc_rxb_skb--;
1076         dev_kfree_skb_any(cmd.meta.u.skb);
1077
1078         return rc;
1079 }
1080
1081 /**
1082  * iwl3945_commit_rxon - commit staging_rxon to hardware
1083  *
1084  * The RXON command in staging_rxon is committed to the hardware and
1085  * the active_rxon structure is updated with the new data.  This
1086  * function correctly transitions out of the RXON_ASSOC_MSK state if
1087  * a HW tune is required based on the RXON structure changes.
1088  */
1089 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1090 {
1091         /* cast away the const for active_rxon in this function */
1092         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1093         int rc = 0;
1094         DECLARE_MAC_BUF(mac);
1095
1096         if (!iwl3945_is_alive(priv))
1097                 return -1;
1098
1099         /* always get timestamp with Rx frame */
1100         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1101
1102         /* select antenna */
1103         priv->staging_rxon.flags &=
1104             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1105         priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1106
1107         rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
1108         if (rc) {
1109                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1110                 return -EINVAL;
1111         }
1112
1113         /* If we don't need to send a full RXON, we can use
1114          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1115          * and other flags for the current radio configuration. */
1116         if (!iwl3945_full_rxon_required(priv)) {
1117                 rc = iwl3945_send_rxon_assoc(priv);
1118                 if (rc) {
1119                         IWL_ERROR("Error setting RXON_ASSOC "
1120                                   "configuration (%d).\n", rc);
1121                         return rc;
1122                 }
1123
1124                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1125
1126                 return 0;
1127         }
1128
1129         /* If we are currently associated and the new config requires
1130          * an RXON_ASSOC and the new config wants the associated mask enabled,
1131          * we must clear the associated from the active configuration
1132          * before we apply the new config */
1133         if (iwl3945_is_associated(priv) &&
1134             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1135                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1136                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1137
1138                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1139                                       sizeof(struct iwl3945_rxon_cmd),
1140                                       &priv->active_rxon);
1141
1142                 /* If the mask clearing failed then we set
1143                  * active_rxon back to what it was previously */
1144                 if (rc) {
1145                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1146                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1147                                   "configuration (%d).\n", rc);
1148                         return rc;
1149                 }
1150         }
1151
1152         IWL_DEBUG_INFO("Sending RXON\n"
1153                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1154                        "* channel = %d\n"
1155                        "* bssid = %s\n",
1156                        ((priv->staging_rxon.filter_flags &
1157                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1158                        le16_to_cpu(priv->staging_rxon.channel),
1159                        print_mac(mac, priv->staging_rxon.bssid_addr));
1160
1161         /* Apply the new configuration */
1162         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1163                               sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1164         if (rc) {
1165                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1166                 return rc;
1167         }
1168
1169         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1170
1171         iwl3945_clear_stations_table(priv);
1172
1173         /* If we issue a new RXON command which required a tune then we must
1174          * send a new TXPOWER command or we won't be able to Tx any frames */
1175         rc = iwl3945_hw_reg_send_txpower(priv);
1176         if (rc) {
1177                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1178                 return rc;
1179         }
1180
1181         /* Add the broadcast address so we can send broadcast frames */
1182         if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1183             IWL_INVALID_STATION) {
1184                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1185                 return -EIO;
1186         }
1187
1188         /* If we have set the ASSOC_MSK and we are in BSS mode then
1189          * add the IWL_AP_ID to the station rate table */
1190         if (iwl3945_is_associated(priv) &&
1191             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
1192                 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1193                     == IWL_INVALID_STATION) {
1194                         IWL_ERROR("Error adding AP address for transmit.\n");
1195                         return -EIO;
1196                 }
1197
1198         /* Init the hardware's rate fallback order based on the band */
1199         rc = iwl3945_init_hw_rate_table(priv);
1200         if (rc) {
1201                 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1202                 return -EIO;
1203         }
1204
1205         return 0;
1206 }
1207
1208 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1209 {
1210         struct iwl3945_bt_cmd bt_cmd = {
1211                 .flags = 3,
1212                 .lead_time = 0xAA,
1213                 .max_kill = 1,
1214                 .kill_ack_mask = 0,
1215                 .kill_cts_mask = 0,
1216         };
1217
1218         return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1219                                 sizeof(struct iwl3945_bt_cmd), &bt_cmd);
1220 }
1221
1222 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1223 {
1224         int rc = 0;
1225         struct iwl3945_rx_packet *res;
1226         struct iwl3945_host_cmd cmd = {
1227                 .id = REPLY_SCAN_ABORT_CMD,
1228                 .meta.flags = CMD_WANT_SKB,
1229         };
1230
1231         /* If there isn't a scan actively going on in the hardware
1232          * then we are in between scan bands and not actually
1233          * actively scanning, so don't send the abort command */
1234         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1235                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1236                 return 0;
1237         }
1238
1239         rc = iwl3945_send_cmd_sync(priv, &cmd);
1240         if (rc) {
1241                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1242                 return rc;
1243         }
1244
1245         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1246         if (res->u.status != CAN_ABORT_STATUS) {
1247                 /* The scan abort will return 1 for success or
1248                  * 2 for "failure".  A failure condition can be
1249                  * due to simply not being in an active scan which
1250                  * can occur if we send the scan abort before we
1251                  * the microcode has notified us that a scan is
1252                  * completed. */
1253                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1254                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1255                 clear_bit(STATUS_SCAN_HW, &priv->status);
1256         }
1257
1258         dev_kfree_skb_any(cmd.meta.u.skb);
1259
1260         return rc;
1261 }
1262
1263 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1264                                         struct iwl3945_cmd *cmd,
1265                                         struct sk_buff *skb)
1266 {
1267         return 1;
1268 }
1269
1270 /*
1271  * CARD_STATE_CMD
1272  *
1273  * Use: Sets the device's internal card state to enable, disable, or halt
1274  *
1275  * When in the 'enable' state the card operates as normal.
1276  * When in the 'disable' state, the card enters into a low power mode.
1277  * When in the 'halt' state, the card is shut down and must be fully
1278  * restarted to come back on.
1279  */
1280 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1281 {
1282         struct iwl3945_host_cmd cmd = {
1283                 .id = REPLY_CARD_STATE_CMD,
1284                 .len = sizeof(u32),
1285                 .data = &flags,
1286                 .meta.flags = meta_flag,
1287         };
1288
1289         if (meta_flag & CMD_ASYNC)
1290                 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1291
1292         return iwl3945_send_cmd(priv, &cmd);
1293 }
1294
1295 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1296                                      struct iwl3945_cmd *cmd, struct sk_buff *skb)
1297 {
1298         struct iwl3945_rx_packet *res = NULL;
1299
1300         if (!skb) {
1301                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1302                 return 1;
1303         }
1304
1305         res = (struct iwl3945_rx_packet *)skb->data;
1306         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1307                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1308                           res->hdr.flags);
1309                 return 1;
1310         }
1311
1312         switch (res->u.add_sta.status) {
1313         case ADD_STA_SUCCESS_MSK:
1314                 break;
1315         default:
1316                 break;
1317         }
1318
1319         /* We didn't cache the SKB; let the caller free it */
1320         return 1;
1321 }
1322
1323 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1324                          struct iwl3945_addsta_cmd *sta, u8 flags)
1325 {
1326         struct iwl3945_rx_packet *res = NULL;
1327         int rc = 0;
1328         struct iwl3945_host_cmd cmd = {
1329                 .id = REPLY_ADD_STA,
1330                 .len = sizeof(struct iwl3945_addsta_cmd),
1331                 .meta.flags = flags,
1332                 .data = sta,
1333         };
1334
1335         if (flags & CMD_ASYNC)
1336                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1337         else
1338                 cmd.meta.flags |= CMD_WANT_SKB;
1339
1340         rc = iwl3945_send_cmd(priv, &cmd);
1341
1342         if (rc || (flags & CMD_ASYNC))
1343                 return rc;
1344
1345         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1346         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1347                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1348                           res->hdr.flags);
1349                 rc = -EIO;
1350         }
1351
1352         if (rc == 0) {
1353                 switch (res->u.add_sta.status) {
1354                 case ADD_STA_SUCCESS_MSK:
1355                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1356                         break;
1357                 default:
1358                         rc = -EIO;
1359                         IWL_WARNING("REPLY_ADD_STA failed\n");
1360                         break;
1361                 }
1362         }
1363
1364         priv->alloc_rxb_skb--;
1365         dev_kfree_skb_any(cmd.meta.u.skb);
1366
1367         return rc;
1368 }
1369
1370 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1371                                    struct ieee80211_key_conf *keyconf,
1372                                    u8 sta_id)
1373 {
1374         unsigned long flags;
1375         __le16 key_flags = 0;
1376
1377         switch (keyconf->alg) {
1378         case ALG_CCMP:
1379                 key_flags |= STA_KEY_FLG_CCMP;
1380                 key_flags |= cpu_to_le16(
1381                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1382                 key_flags &= ~STA_KEY_FLG_INVALID;
1383                 break;
1384         case ALG_TKIP:
1385         case ALG_WEP:
1386         default:
1387                 return -EINVAL;
1388         }
1389         spin_lock_irqsave(&priv->sta_lock, flags);
1390         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1391         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1392         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1393                keyconf->keylen);
1394
1395         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1396                keyconf->keylen);
1397         priv->stations[sta_id].sta.key.key_flags = key_flags;
1398         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1399         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1400
1401         spin_unlock_irqrestore(&priv->sta_lock, flags);
1402
1403         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1404         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1405         return 0;
1406 }
1407
1408 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1409 {
1410         unsigned long flags;
1411
1412         spin_lock_irqsave(&priv->sta_lock, flags);
1413         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1414         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
1415         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1416         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1417         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1418         spin_unlock_irqrestore(&priv->sta_lock, flags);
1419
1420         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1421         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1422         return 0;
1423 }
1424
1425 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1426 {
1427         struct list_head *element;
1428
1429         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1430                        priv->frames_count);
1431
1432         while (!list_empty(&priv->free_frames)) {
1433                 element = priv->free_frames.next;
1434                 list_del(element);
1435                 kfree(list_entry(element, struct iwl3945_frame, list));
1436                 priv->frames_count--;
1437         }
1438
1439         if (priv->frames_count) {
1440                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1441                             priv->frames_count);
1442                 priv->frames_count = 0;
1443         }
1444 }
1445
1446 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1447 {
1448         struct iwl3945_frame *frame;
1449         struct list_head *element;
1450         if (list_empty(&priv->free_frames)) {
1451                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1452                 if (!frame) {
1453                         IWL_ERROR("Could not allocate frame!\n");
1454                         return NULL;
1455                 }
1456
1457                 priv->frames_count++;
1458                 return frame;
1459         }
1460
1461         element = priv->free_frames.next;
1462         list_del(element);
1463         return list_entry(element, struct iwl3945_frame, list);
1464 }
1465
1466 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1467 {
1468         memset(frame, 0, sizeof(*frame));
1469         list_add(&frame->list, &priv->free_frames);
1470 }
1471
1472 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1473                                 struct ieee80211_hdr *hdr,
1474                                 const u8 *dest, int left)
1475 {
1476
1477         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1478             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1479              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1480                 return 0;
1481
1482         if (priv->ibss_beacon->len > left)
1483                 return 0;
1484
1485         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1486
1487         return priv->ibss_beacon->len;
1488 }
1489
1490 static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
1491 {
1492         u8 i;
1493
1494         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1495              i = iwl3945_rates[i].next_ieee) {
1496                 if (rate_mask & (1 << i))
1497                         return iwl3945_rates[i].plcp;
1498         }
1499
1500         return IWL_RATE_INVALID;
1501 }
1502
1503 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1504 {
1505         struct iwl3945_frame *frame;
1506         unsigned int frame_size;
1507         int rc;
1508         u8 rate;
1509
1510         frame = iwl3945_get_free_frame(priv);
1511
1512         if (!frame) {
1513                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1514                           "command.\n");
1515                 return -ENOMEM;
1516         }
1517
1518         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1519                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
1520                                                 0xFF0);
1521                 if (rate == IWL_INVALID_RATE)
1522                         rate = IWL_RATE_6M_PLCP;
1523         } else {
1524                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1525                 if (rate == IWL_INVALID_RATE)
1526                         rate = IWL_RATE_1M_PLCP;
1527         }
1528
1529         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1530
1531         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1532                               &frame->u.cmd[0]);
1533
1534         iwl3945_free_frame(priv, frame);
1535
1536         return rc;
1537 }
1538
1539 /******************************************************************************
1540  *
1541  * EEPROM related functions
1542  *
1543  ******************************************************************************/
1544
1545 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1546 {
1547         memcpy(mac, priv->eeprom.mac_address, 6);
1548 }
1549
1550 /*
1551  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1552  * embedded controller) as EEPROM reader; each read is a series of pulses
1553  * to/from the EEPROM chip, not a single event, so even reads could conflict
1554  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1555  * simply claims ownership, which should be safe when this function is called
1556  * (i.e. before loading uCode!).
1557  */
1558 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1559 {
1560         _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1561         return 0;
1562 }
1563
1564 /**
1565  * iwl3945_eeprom_init - read EEPROM contents
1566  *
1567  * Load the EEPROM contents from adapter into priv->eeprom
1568  *
1569  * NOTE:  This routine uses the non-debug IO access functions.
1570  */
1571 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1572 {
1573         u16 *e = (u16 *)&priv->eeprom;
1574         u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1575         u32 r;
1576         int sz = sizeof(priv->eeprom);
1577         int rc;
1578         int i;
1579         u16 addr;
1580
1581         /* The EEPROM structure has several padding buffers within it
1582          * and when adding new EEPROM maps is subject to programmer errors
1583          * which may be very difficult to identify without explicitly
1584          * checking the resulting size of the eeprom map. */
1585         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1586
1587         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1588                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1589                 return -ENOENT;
1590         }
1591
1592         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1593         rc = iwl3945_eeprom_acquire_semaphore(priv);
1594         if (rc < 0) {
1595                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1596                 return -ENOENT;
1597         }
1598
1599         /* eeprom is an array of 16bit values */
1600         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1601                 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1602                 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1603
1604                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1605                                         i += IWL_EEPROM_ACCESS_DELAY) {
1606                         r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1607                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1608                                 break;
1609                         udelay(IWL_EEPROM_ACCESS_DELAY);
1610                 }
1611
1612                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1613                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1614                         return -ETIMEDOUT;
1615                 }
1616                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1617         }
1618
1619         return 0;
1620 }
1621
1622 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1623 {
1624         if (priv->hw_setting.shared_virt)
1625                 pci_free_consistent(priv->pci_dev,
1626                                     sizeof(struct iwl3945_shared),
1627                                     priv->hw_setting.shared_virt,
1628                                     priv->hw_setting.shared_phys);
1629 }
1630
1631 /**
1632  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1633  *
1634  * return : set the bit for each supported rate insert in ie
1635  */
1636 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1637                                     u16 basic_rate, int *left)
1638 {
1639         u16 ret_rates = 0, bit;
1640         int i;
1641         u8 *cnt = ie;
1642         u8 *rates = ie + 1;
1643
1644         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1645                 if (bit & supported_rate) {
1646                         ret_rates |= bit;
1647                         rates[*cnt] = iwl3945_rates[i].ieee |
1648                                 ((bit & basic_rate) ? 0x80 : 0x00);
1649                         (*cnt)++;
1650                         (*left)--;
1651                         if ((*left <= 0) ||
1652                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1653                                 break;
1654                 }
1655         }
1656
1657         return ret_rates;
1658 }
1659
1660 /**
1661  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1662  */
1663 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1664                               struct ieee80211_mgmt *frame,
1665                               int left, int is_direct)
1666 {
1667         int len = 0;
1668         u8 *pos = NULL;
1669         u16 active_rates, ret_rates, cck_rates;
1670
1671         /* Make sure there is enough space for the probe request,
1672          * two mandatory IEs and the data */
1673         left -= 24;
1674         if (left < 0)
1675                 return 0;
1676         len += 24;
1677
1678         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1679         memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1680         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1681         memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1682         frame->seq_ctrl = 0;
1683
1684         /* fill in our indirect SSID IE */
1685         /* ...next IE... */
1686
1687         left -= 2;
1688         if (left < 0)
1689                 return 0;
1690         len += 2;
1691         pos = &(frame->u.probe_req.variable[0]);
1692         *pos++ = WLAN_EID_SSID;
1693         *pos++ = 0;
1694
1695         /* fill in our direct SSID IE... */
1696         if (is_direct) {
1697                 /* ...next IE... */
1698                 left -= 2 + priv->essid_len;
1699                 if (left < 0)
1700                         return 0;
1701                 /* ... fill it in... */
1702                 *pos++ = WLAN_EID_SSID;
1703                 *pos++ = priv->essid_len;
1704                 memcpy(pos, priv->essid, priv->essid_len);
1705                 pos += priv->essid_len;
1706                 len += 2 + priv->essid_len;
1707         }
1708
1709         /* fill in supported rate */
1710         /* ...next IE... */
1711         left -= 2;
1712         if (left < 0)
1713                 return 0;
1714
1715         /* ... fill it in... */
1716         *pos++ = WLAN_EID_SUPP_RATES;
1717         *pos = 0;
1718
1719         priv->active_rate = priv->rates_mask;
1720         active_rates = priv->active_rate;
1721         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1722
1723         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1724         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1725                         priv->active_rate_basic, &left);
1726         active_rates &= ~ret_rates;
1727
1728         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1729                                  priv->active_rate_basic, &left);
1730         active_rates &= ~ret_rates;
1731
1732         len += 2 + *pos;
1733         pos += (*pos) + 1;
1734         if (active_rates == 0)
1735                 goto fill_end;
1736
1737         /* fill in supported extended rate */
1738         /* ...next IE... */
1739         left -= 2;
1740         if (left < 0)
1741                 return 0;
1742         /* ... fill it in... */
1743         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1744         *pos = 0;
1745         iwl3945_supported_rate_to_ie(pos, active_rates,
1746                                  priv->active_rate_basic, &left);
1747         if (*pos > 0)
1748                 len += 2 + *pos;
1749
1750  fill_end:
1751         return (u16)len;
1752 }
1753
1754 /*
1755  * QoS  support
1756 */
1757 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1758                                        struct iwl3945_qosparam_cmd *qos)
1759 {
1760
1761         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1762                                 sizeof(struct iwl3945_qosparam_cmd), qos);
1763 }
1764
1765 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1766 {
1767         u16 cw_min = 15;
1768         u16 cw_max = 1023;
1769         u8 aifs = 2;
1770         u8 is_legacy = 0;
1771         unsigned long flags;
1772         int i;
1773
1774         spin_lock_irqsave(&priv->lock, flags);
1775         priv->qos_data.qos_active = 0;
1776
1777         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1778                 if (priv->qos_data.qos_enable)
1779                         priv->qos_data.qos_active = 1;
1780                 if (!(priv->active_rate & 0xfff0)) {
1781                         cw_min = 31;
1782                         is_legacy = 1;
1783                 }
1784         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1785                 if (priv->qos_data.qos_enable)
1786                         priv->qos_data.qos_active = 1;
1787         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1788                 cw_min = 31;
1789                 is_legacy = 1;
1790         }
1791
1792         if (priv->qos_data.qos_active)
1793                 aifs = 3;
1794
1795         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1796         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1797         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1798         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1799         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1800
1801         if (priv->qos_data.qos_active) {
1802                 i = 1;
1803                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1804                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1805                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1806                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1807                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1808
1809                 i = 2;
1810                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1811                         cpu_to_le16((cw_min + 1) / 2 - 1);
1812                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1813                         cpu_to_le16(cw_max);
1814                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1815                 if (is_legacy)
1816                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1817                                 cpu_to_le16(6016);
1818                 else
1819                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1820                                 cpu_to_le16(3008);
1821                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1822
1823                 i = 3;
1824                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1825                         cpu_to_le16((cw_min + 1) / 4 - 1);
1826                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1827                         cpu_to_le16((cw_max + 1) / 2 - 1);
1828                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1829                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1830                 if (is_legacy)
1831                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1832                                 cpu_to_le16(3264);
1833                 else
1834                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1835                                 cpu_to_le16(1504);
1836         } else {
1837                 for (i = 1; i < 4; i++) {
1838                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1839                                 cpu_to_le16(cw_min);
1840                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1841                                 cpu_to_le16(cw_max);
1842                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1843                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1844                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1845                 }
1846         }
1847         IWL_DEBUG_QOS("set QoS to default \n");
1848
1849         spin_unlock_irqrestore(&priv->lock, flags);
1850 }
1851
1852 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
1853 {
1854         unsigned long flags;
1855
1856         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1857                 return;
1858
1859         if (!priv->qos_data.qos_enable)
1860                 return;
1861
1862         spin_lock_irqsave(&priv->lock, flags);
1863         priv->qos_data.def_qos_parm.qos_flags = 0;
1864
1865         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1866             !priv->qos_data.qos_cap.q_AP.txop_request)
1867                 priv->qos_data.def_qos_parm.qos_flags |=
1868                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1869
1870         if (priv->qos_data.qos_active)
1871                 priv->qos_data.def_qos_parm.qos_flags |=
1872                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1873
1874         spin_unlock_irqrestore(&priv->lock, flags);
1875
1876         if (force || iwl3945_is_associated(priv)) {
1877                 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
1878                               priv->qos_data.qos_active);
1879
1880                 iwl3945_send_qos_params_command(priv,
1881                                 &(priv->qos_data.def_qos_parm));
1882         }
1883 }
1884
1885 /*
1886  * Power management (not Tx power!) functions
1887  */
1888 #define MSEC_TO_USEC 1024
1889
1890 #define NOSLP __constant_cpu_to_le32(0)
1891 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
1892 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1893 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1894                                      __constant_cpu_to_le32(X1), \
1895                                      __constant_cpu_to_le32(X2), \
1896                                      __constant_cpu_to_le32(X3), \
1897                                      __constant_cpu_to_le32(X4)}
1898
1899
1900 /* default power management (not Tx power) table values */
1901 /* for tim  0-10 */
1902 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
1903         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1904         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1905         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1906         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1907         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1908         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1909 };
1910
1911 /* for tim > 10 */
1912 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
1913         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1914         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1915                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1916         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1917                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1918         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1919                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1920         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1921         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1922                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1923 };
1924
1925 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
1926 {
1927         int rc = 0, i;
1928         struct iwl3945_power_mgr *pow_data;
1929         int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
1930         u16 pci_pm;
1931
1932         IWL_DEBUG_POWER("Initialize power \n");
1933
1934         pow_data = &(priv->power_data);
1935
1936         memset(pow_data, 0, sizeof(*pow_data));
1937
1938         pow_data->active_index = IWL_POWER_RANGE_0;
1939         pow_data->dtim_val = 0xffff;
1940
1941         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1942         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1943
1944         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1945         if (rc != 0)
1946                 return 0;
1947         else {
1948                 struct iwl3945_powertable_cmd *cmd;
1949
1950                 IWL_DEBUG_POWER("adjust power command flags\n");
1951
1952                 for (i = 0; i < IWL_POWER_AC; i++) {
1953                         cmd = &pow_data->pwr_range_0[i].cmd;
1954
1955                         if (pci_pm & 0x1)
1956                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1957                         else
1958                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1959                 }
1960         }
1961         return rc;
1962 }
1963
1964 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1965                                 struct iwl3945_powertable_cmd *cmd, u32 mode)
1966 {
1967         int rc = 0, i;
1968         u8 skip;
1969         u32 max_sleep = 0;
1970         struct iwl3945_power_vec_entry *range;
1971         u8 period = 0;
1972         struct iwl3945_power_mgr *pow_data;
1973
1974         if (mode > IWL_POWER_INDEX_5) {
1975                 IWL_DEBUG_POWER("Error invalid power mode \n");
1976                 return -1;
1977         }
1978         pow_data = &(priv->power_data);
1979
1980         if (pow_data->active_index == IWL_POWER_RANGE_0)
1981                 range = &pow_data->pwr_range_0[0];
1982         else
1983                 range = &pow_data->pwr_range_1[1];
1984
1985         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1986
1987 #ifdef IWL_MAC80211_DISABLE
1988         if (priv->assoc_network != NULL) {
1989                 unsigned long flags;
1990
1991                 period = priv->assoc_network->tim.tim_period;
1992         }
1993 #endif  /*IWL_MAC80211_DISABLE */
1994         skip = range[mode].no_dtim;
1995
1996         if (period == 0) {
1997                 period = 1;
1998                 skip = 0;
1999         }
2000
2001         if (skip == 0) {
2002                 max_sleep = period;
2003                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2004         } else {
2005                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2006                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2007                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2008         }
2009
2010         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2011                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2012                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2013         }
2014
2015         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2016         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2017         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2018         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2019                         le32_to_cpu(cmd->sleep_interval[0]),
2020                         le32_to_cpu(cmd->sleep_interval[1]),
2021                         le32_to_cpu(cmd->sleep_interval[2]),
2022                         le32_to_cpu(cmd->sleep_interval[3]),
2023                         le32_to_cpu(cmd->sleep_interval[4]));
2024
2025         return rc;
2026 }
2027
2028 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
2029 {
2030         u32 uninitialized_var(final_mode);
2031         int rc;
2032         struct iwl3945_powertable_cmd cmd;
2033
2034         /* If on battery, set to 3,
2035          * if plugged into AC power, set to CAM ("continuously aware mode"),
2036          * else user level */
2037         switch (mode) {
2038         case IWL_POWER_BATTERY:
2039                 final_mode = IWL_POWER_INDEX_3;
2040                 break;
2041         case IWL_POWER_AC:
2042                 final_mode = IWL_POWER_MODE_CAM;
2043                 break;
2044         default:
2045                 final_mode = mode;
2046                 break;
2047         }
2048
2049         iwl3945_update_power_cmd(priv, &cmd, final_mode);
2050
2051         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2052
2053         if (final_mode == IWL_POWER_MODE_CAM)
2054                 clear_bit(STATUS_POWER_PMI, &priv->status);
2055         else
2056                 set_bit(STATUS_POWER_PMI, &priv->status);
2057
2058         return rc;
2059 }
2060
2061 int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2062 {
2063         /* Filter incoming packets to determine if they are targeted toward
2064          * this network, discarding packets coming from ourselves */
2065         switch (priv->iw_mode) {
2066         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2067                 /* packets from our adapter are dropped (echo) */
2068                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2069                         return 0;
2070                 /* {broad,multi}cast packets to our IBSS go through */
2071                 if (is_multicast_ether_addr(header->addr1))
2072                         return !compare_ether_addr(header->addr3, priv->bssid);
2073                 /* packets to our adapter go through */
2074                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2075         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2076                 /* packets from our adapter are dropped (echo) */
2077                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2078                         return 0;
2079                 /* {broad,multi}cast packets to our BSS go through */
2080                 if (is_multicast_ether_addr(header->addr1))
2081                         return !compare_ether_addr(header->addr2, priv->bssid);
2082                 /* packets to our adapter go through */
2083                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2084         }
2085
2086         return 1;
2087 }
2088
2089 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2090
2091 static const char *iwl3945_get_tx_fail_reason(u32 status)
2092 {
2093         switch (status & TX_STATUS_MSK) {
2094         case TX_STATUS_SUCCESS:
2095                 return "SUCCESS";
2096                 TX_STATUS_ENTRY(SHORT_LIMIT);
2097                 TX_STATUS_ENTRY(LONG_LIMIT);
2098                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2099                 TX_STATUS_ENTRY(MGMNT_ABORT);
2100                 TX_STATUS_ENTRY(NEXT_FRAG);
2101                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2102                 TX_STATUS_ENTRY(DEST_PS);
2103                 TX_STATUS_ENTRY(ABORTED);
2104                 TX_STATUS_ENTRY(BT_RETRY);
2105                 TX_STATUS_ENTRY(STA_INVALID);
2106                 TX_STATUS_ENTRY(FRAG_DROPPED);
2107                 TX_STATUS_ENTRY(TID_DISABLE);
2108                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2109                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2110                 TX_STATUS_ENTRY(TX_LOCKED);
2111                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2112         }
2113
2114         return "UNKNOWN";
2115 }
2116
2117 /**
2118  * iwl3945_scan_cancel - Cancel any currently executing HW scan
2119  *
2120  * NOTE: priv->mutex is not required before calling this function
2121  */
2122 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
2123 {
2124         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2125                 clear_bit(STATUS_SCANNING, &priv->status);
2126                 return 0;
2127         }
2128
2129         if (test_bit(STATUS_SCANNING, &priv->status)) {
2130                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2131                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2132                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2133                         queue_work(priv->workqueue, &priv->abort_scan);
2134
2135                 } else
2136                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2137
2138                 return test_bit(STATUS_SCANNING, &priv->status);
2139         }
2140
2141         return 0;
2142 }
2143
2144 /**
2145  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2146  * @ms: amount of time to wait (in milliseconds) for scan to abort
2147  *
2148  * NOTE: priv->mutex must be held before calling this function
2149  */
2150 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2151 {
2152         unsigned long now = jiffies;
2153         int ret;
2154
2155         ret = iwl3945_scan_cancel(priv);
2156         if (ret && ms) {
2157                 mutex_unlock(&priv->mutex);
2158                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2159                                 test_bit(STATUS_SCANNING, &priv->status))
2160                         msleep(1);
2161                 mutex_lock(&priv->mutex);
2162
2163                 return test_bit(STATUS_SCANNING, &priv->status);
2164         }
2165
2166         return ret;
2167 }
2168
2169 static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
2170 {
2171         /* Reset ieee stats */
2172
2173         /* We don't reset the net_device_stats (ieee->stats) on
2174          * re-association */
2175
2176         priv->last_seq_num = -1;
2177         priv->last_frag_num = -1;
2178         priv->last_packet_time = 0;
2179
2180         iwl3945_scan_cancel(priv);
2181 }
2182
2183 #define MAX_UCODE_BEACON_INTERVAL       1024
2184 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2185
2186 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2187 {
2188         u16 new_val = 0;
2189         u16 beacon_factor = 0;
2190
2191         beacon_factor =
2192             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2193                 / MAX_UCODE_BEACON_INTERVAL;
2194         new_val = beacon_val / beacon_factor;
2195
2196         return cpu_to_le16(new_val);
2197 }
2198
2199 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2200 {
2201         u64 interval_tm_unit;
2202         u64 tsf, result;
2203         unsigned long flags;
2204         struct ieee80211_conf *conf = NULL;
2205         u16 beacon_int = 0;
2206
2207         conf = ieee80211_get_hw_conf(priv->hw);
2208
2209         spin_lock_irqsave(&priv->lock, flags);
2210         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2211         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2212
2213         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2214
2215         tsf = priv->timestamp1;
2216         tsf = ((tsf << 32) | priv->timestamp0);
2217
2218         beacon_int = priv->beacon_int;
2219         spin_unlock_irqrestore(&priv->lock, flags);
2220
2221         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2222                 if (beacon_int == 0) {
2223                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2224                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2225                 } else {
2226                         priv->rxon_timing.beacon_interval =
2227                                 cpu_to_le16(beacon_int);
2228                         priv->rxon_timing.beacon_interval =
2229                             iwl3945_adjust_beacon_interval(
2230                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2231                 }
2232
2233                 priv->rxon_timing.atim_window = 0;
2234         } else {
2235                 priv->rxon_timing.beacon_interval =
2236                         iwl3945_adjust_beacon_interval(conf->beacon_int);
2237                 /* TODO: we need to get atim_window from upper stack
2238                  * for now we set to 0 */
2239                 priv->rxon_timing.atim_window = 0;
2240         }
2241
2242         interval_tm_unit =
2243                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2244         result = do_div(tsf, interval_tm_unit);
2245         priv->rxon_timing.beacon_init_val =
2246             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2247
2248         IWL_DEBUG_ASSOC
2249             ("beacon interval %d beacon timer %d beacon tim %d\n",
2250                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2251                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2252                 le16_to_cpu(priv->rxon_timing.atim_window));
2253 }
2254
2255 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2256 {
2257         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2258                 IWL_ERROR("APs don't scan.\n");
2259                 return 0;
2260         }
2261
2262         if (!iwl3945_is_ready_rf(priv)) {
2263                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2264                 return -EIO;
2265         }
2266
2267         if (test_bit(STATUS_SCANNING, &priv->status)) {
2268                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2269                 return -EAGAIN;
2270         }
2271
2272         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2273                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2274                                "Queuing.\n");
2275                 return -EAGAIN;
2276         }
2277
2278         IWL_DEBUG_INFO("Starting scan...\n");
2279         priv->scan_bands = 2;
2280         set_bit(STATUS_SCANNING, &priv->status);
2281         priv->scan_start = jiffies;
2282         priv->scan_pass_start = priv->scan_start;
2283
2284         queue_work(priv->workqueue, &priv->request_scan);
2285
2286         return 0;
2287 }
2288
2289 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2290 {
2291         struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2292
2293         if (hw_decrypt)
2294                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2295         else
2296                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2297
2298         return 0;
2299 }
2300
2301 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
2302                                           enum ieee80211_band band)
2303 {
2304         if (band == IEEE80211_BAND_5GHZ) {
2305                 priv->staging_rxon.flags &=
2306                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2307                       | RXON_FLG_CCK_MSK);
2308                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2309         } else {
2310                 /* Copied from iwl3945_bg_post_associate() */
2311                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2312                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2313                 else
2314                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2315
2316                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2317                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2318
2319                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2320                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2321                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2322         }
2323 }
2324
2325 /*
2326  * initialize rxon structure with default values from eeprom
2327  */
2328 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
2329 {
2330         const struct iwl3945_channel_info *ch_info;
2331
2332         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2333
2334         switch (priv->iw_mode) {
2335         case IEEE80211_IF_TYPE_AP:
2336                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2337                 break;
2338
2339         case IEEE80211_IF_TYPE_STA:
2340                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2341                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2342                 break;
2343
2344         case IEEE80211_IF_TYPE_IBSS:
2345                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2346                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2347                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2348                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2349                 break;
2350
2351         case IEEE80211_IF_TYPE_MNTR:
2352                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2353                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2354                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2355                 break;
2356         }
2357
2358 #if 0
2359         /* TODO:  Figure out when short_preamble would be set and cache from
2360          * that */
2361         if (!hw_to_local(priv->hw)->short_preamble)
2362                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2363         else
2364                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2365 #endif
2366
2367         ch_info = iwl3945_get_channel_info(priv, priv->band,
2368                                        le16_to_cpu(priv->staging_rxon.channel));
2369
2370         if (!ch_info)
2371                 ch_info = &priv->channel_info[0];
2372
2373         /*
2374          * in some case A channels are all non IBSS
2375          * in this case force B/G channel
2376          */
2377         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2378             !(is_channel_ibss(ch_info)))
2379                 ch_info = &priv->channel_info[0];
2380
2381         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2382         if (is_channel_a_band(ch_info))
2383                 priv->band = IEEE80211_BAND_5GHZ;
2384         else
2385                 priv->band = IEEE80211_BAND_2GHZ;
2386
2387         iwl3945_set_flags_for_phymode(priv, priv->band);
2388
2389         priv->staging_rxon.ofdm_basic_rates =
2390             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2391         priv->staging_rxon.cck_basic_rates =
2392             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2393 }
2394
2395 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2396 {
2397         if (mode == IEEE80211_IF_TYPE_IBSS) {
2398                 const struct iwl3945_channel_info *ch_info;
2399
2400                 ch_info = iwl3945_get_channel_info(priv,
2401                         priv->band,
2402                         le16_to_cpu(priv->staging_rxon.channel));
2403
2404                 if (!ch_info || !is_channel_ibss(ch_info)) {
2405                         IWL_ERROR("channel %d not IBSS channel\n",
2406                                   le16_to_cpu(priv->staging_rxon.channel));
2407                         return -EINVAL;
2408                 }
2409         }
2410
2411         priv->iw_mode = mode;
2412
2413         iwl3945_connection_init_rx_config(priv);
2414         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2415
2416         iwl3945_clear_stations_table(priv);
2417
2418         /* dont commit rxon if rf-kill is on*/
2419         if (!iwl3945_is_ready_rf(priv))
2420                 return -EAGAIN;
2421
2422         cancel_delayed_work(&priv->scan_check);
2423         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2424                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2425                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2426                 return -EAGAIN;
2427         }
2428
2429         iwl3945_commit_rxon(priv);
2430
2431         return 0;
2432 }
2433
2434 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2435                                       struct ieee80211_tx_control *ctl,
2436                                       struct iwl3945_cmd *cmd,
2437                                       struct sk_buff *skb_frag,
2438                                       int last_frag)
2439 {
2440         struct iwl3945_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2441
2442         switch (keyinfo->alg) {
2443         case ALG_CCMP:
2444                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2445                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2446                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2447                 break;
2448
2449         case ALG_TKIP:
2450 #if 0
2451                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2452
2453                 if (last_frag)
2454                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2455                                8);
2456                 else
2457                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2458 #endif
2459                 break;
2460
2461         case ALG_WEP:
2462                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2463                     (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2464
2465                 if (keyinfo->keylen == 13)
2466                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2467
2468                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2469
2470                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2471                              "with key %d\n", ctl->key_idx);
2472                 break;
2473
2474         default:
2475                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2476                 break;
2477         }
2478 }
2479
2480 /*
2481  * handle build REPLY_TX command notification.
2482  */
2483 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2484                                   struct iwl3945_cmd *cmd,
2485                                   struct ieee80211_tx_control *ctrl,
2486                                   struct ieee80211_hdr *hdr,
2487                                   int is_unicast, u8 std_id)
2488 {
2489         __le16 *qc;
2490         u16 fc = le16_to_cpu(hdr->frame_control);
2491         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2492
2493         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2494         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2495                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2496                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2497                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2498                 if (ieee80211_is_probe_response(fc) &&
2499                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2500                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2501         } else {
2502                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2503                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2504         }
2505
2506         cmd->cmd.tx.sta_id = std_id;
2507         if (ieee80211_get_morefrag(hdr))
2508                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2509
2510         qc = ieee80211_get_qos_ctrl(hdr);
2511         if (qc) {
2512                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2513                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2514         } else
2515                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2516
2517         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2518                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2519                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2520         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2521                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2522                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2523         }
2524
2525         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2526                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2527
2528         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2529         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2530                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2531                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2532                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2533                 else
2534                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2535         } else
2536                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2537
2538         cmd->cmd.tx.driver_txop = 0;
2539         cmd->cmd.tx.tx_flags = tx_flags;
2540         cmd->cmd.tx.next_frame_len = 0;
2541 }
2542
2543 /**
2544  * iwl3945_get_sta_id - Find station's index within station table
2545  */
2546 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2547 {
2548         int sta_id;
2549         u16 fc = le16_to_cpu(hdr->frame_control);
2550
2551         /* If this frame is broadcast or management, use broadcast station id */
2552         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2553             is_multicast_ether_addr(hdr->addr1))
2554                 return priv->hw_setting.bcast_sta_id;
2555
2556         switch (priv->iw_mode) {
2557
2558         /* If we are a client station in a BSS network, use the special
2559          * AP station entry (that's the only station we communicate with) */
2560         case IEEE80211_IF_TYPE_STA:
2561                 return IWL_AP_ID;
2562
2563         /* If we are an AP, then find the station, or use BCAST */
2564         case IEEE80211_IF_TYPE_AP:
2565                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2566                 if (sta_id != IWL_INVALID_STATION)
2567                         return sta_id;
2568                 return priv->hw_setting.bcast_sta_id;
2569
2570         /* If this frame is going out to an IBSS network, find the station,
2571          * or create a new station table entry */
2572         case IEEE80211_IF_TYPE_IBSS: {
2573                 DECLARE_MAC_BUF(mac);
2574
2575                 /* Create new station table entry */
2576                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2577                 if (sta_id != IWL_INVALID_STATION)
2578                         return sta_id;
2579
2580                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2581
2582                 if (sta_id != IWL_INVALID_STATION)
2583                         return sta_id;
2584
2585                 IWL_DEBUG_DROP("Station %s not in station map. "
2586                                "Defaulting to broadcast...\n",
2587                                print_mac(mac, hdr->addr1));
2588                 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2589                 return priv->hw_setting.bcast_sta_id;
2590         }
2591         default:
2592                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2593                 return priv->hw_setting.bcast_sta_id;
2594         }
2595 }
2596
2597 /*
2598  * start REPLY_TX command process
2599  */
2600 static int iwl3945_tx_skb(struct iwl3945_priv *priv,
2601                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2602 {
2603         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2604         struct iwl3945_tfd_frame *tfd;
2605         u32 *control_flags;
2606         int txq_id = ctl->queue;
2607         struct iwl3945_tx_queue *txq = NULL;
2608         struct iwl3945_queue *q = NULL;
2609         dma_addr_t phys_addr;
2610         dma_addr_t txcmd_phys;
2611         struct iwl3945_cmd *out_cmd = NULL;
2612         u16 len, idx, len_org;
2613         u8 id, hdr_len, unicast;
2614         u8 sta_id;
2615         u16 seq_number = 0;
2616         u16 fc;
2617         __le16 *qc;
2618         u8 wait_write_ptr = 0;
2619         unsigned long flags;
2620         int rc;
2621
2622         spin_lock_irqsave(&priv->lock, flags);
2623         if (iwl3945_is_rfkill(priv)) {
2624                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2625                 goto drop_unlock;
2626         }
2627
2628         if (!priv->vif) {
2629                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2630                 goto drop_unlock;
2631         }
2632
2633         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2634                 IWL_ERROR("ERROR: No TX rate available.\n");
2635                 goto drop_unlock;
2636         }
2637
2638         unicast = !is_multicast_ether_addr(hdr->addr1);
2639         id = 0;
2640
2641         fc = le16_to_cpu(hdr->frame_control);
2642
2643 #ifdef CONFIG_IWL3945_DEBUG
2644         if (ieee80211_is_auth(fc))
2645                 IWL_DEBUG_TX("Sending AUTH frame\n");
2646         else if (ieee80211_is_assoc_request(fc))
2647                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2648         else if (ieee80211_is_reassoc_request(fc))
2649                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2650 #endif
2651
2652         /* drop all data frame if we are not associated */
2653         if ((!iwl3945_is_associated(priv) ||
2654              ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id)) &&
2655             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2656                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2657                 goto drop_unlock;
2658         }
2659
2660         spin_unlock_irqrestore(&priv->lock, flags);
2661
2662         hdr_len = ieee80211_get_hdrlen(fc);
2663
2664         /* Find (or create) index into station table for destination station */
2665         sta_id = iwl3945_get_sta_id(priv, hdr);
2666         if (sta_id == IWL_INVALID_STATION) {
2667                 DECLARE_MAC_BUF(mac);
2668
2669                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2670                                print_mac(mac, hdr->addr1));
2671                 goto drop;
2672         }
2673
2674         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2675
2676         qc = ieee80211_get_qos_ctrl(hdr);
2677         if (qc) {
2678                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2679                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2680                                 IEEE80211_SCTL_SEQ;
2681                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2682                         (hdr->seq_ctrl &
2683                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2684                 seq_number += 0x10;
2685         }
2686
2687         /* Descriptor for chosen Tx queue */
2688         txq = &priv->txq[txq_id];
2689         q = &txq->q;
2690
2691         spin_lock_irqsave(&priv->lock, flags);
2692
2693         /* Set up first empty TFD within this queue's circular TFD buffer */
2694         tfd = &txq->bd[q->write_ptr];
2695         memset(tfd, 0, sizeof(*tfd));
2696         control_flags = (u32 *) tfd;
2697         idx = get_cmd_index(q, q->write_ptr, 0);
2698
2699         /* Set up driver data for this TFD */
2700         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2701         txq->txb[q->write_ptr].skb[0] = skb;
2702         memcpy(&(txq->txb[q->write_ptr].status.control),
2703                ctl, sizeof(struct ieee80211_tx_control));
2704
2705         /* Init first empty entry in queue's array of Tx/cmd buffers */
2706         out_cmd = &txq->cmd[idx];
2707         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2708         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2709
2710         /*
2711          * Set up the Tx-command (not MAC!) header.
2712          * Store the chosen Tx queue and TFD index within the sequence field;
2713          * after Tx, uCode's Tx response will return this value so driver can
2714          * locate the frame within the tx queue and do post-tx processing.
2715          */
2716         out_cmd->hdr.cmd = REPLY_TX;
2717         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2718                                 INDEX_TO_SEQ(q->write_ptr)));
2719
2720         /* Copy MAC header from skb into command buffer */
2721         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2722
2723         /*
2724          * Use the first empty entry in this queue's command buffer array
2725          * to contain the Tx command and MAC header concatenated together
2726          * (payload data will be in another buffer).
2727          * Size of this varies, due to varying MAC header length.
2728          * If end is not dword aligned, we'll have 2 extra bytes at the end
2729          * of the MAC header (device reads on dword boundaries).
2730          * We'll tell device about this padding later.
2731          */
2732         len = priv->hw_setting.tx_cmd_len +
2733                 sizeof(struct iwl3945_cmd_header) + hdr_len;
2734
2735         len_org = len;
2736         len = (len + 3) & ~3;
2737
2738         if (len_org != len)
2739                 len_org = 1;
2740         else
2741                 len_org = 0;
2742
2743         /* Physical address of this Tx command's header (not MAC header!),
2744          * within command buffer array. */
2745         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2746                      offsetof(struct iwl3945_cmd, hdr);
2747
2748         /* Add buffer containing Tx command and MAC(!) header to TFD's
2749          * first entry */
2750         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2751
2752         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2753                 iwl3945_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2754
2755         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2756          * if any (802.11 null frames have no payload). */
2757         len = skb->len - hdr_len;
2758         if (len) {
2759                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2760                                            len, PCI_DMA_TODEVICE);
2761                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2762         }
2763
2764         if (!len)
2765                 /* If there is no payload, then we use only one Tx buffer */
2766                 *control_flags = TFD_CTL_COUNT_SET(1);
2767         else
2768                 /* Else use 2 buffers.
2769                  * Tell 3945 about any padding after MAC header */
2770                 *control_flags = TFD_CTL_COUNT_SET(2) |
2771                         TFD_CTL_PAD_SET(U32_PAD(len));
2772
2773         /* Total # bytes to be transmitted */
2774         len = (u16)skb->len;
2775         out_cmd->cmd.tx.len = cpu_to_le16(len);
2776
2777         /* TODO need this for burst mode later on */
2778         iwl3945_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2779
2780         /* set is_hcca to 0; it probably will never be implemented */
2781         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2782
2783         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2784         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2785
2786         if (!ieee80211_get_morefrag(hdr)) {
2787                 txq->need_update = 1;
2788                 if (qc) {
2789                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2790                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2791                 }
2792         } else {
2793                 wait_write_ptr = 1;
2794                 txq->need_update = 0;
2795         }
2796
2797         iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2798                            sizeof(out_cmd->cmd.tx));
2799
2800         iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2801                            ieee80211_get_hdrlen(fc));
2802
2803         /* Tell device the write index *just past* this latest filled TFD */
2804         q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
2805         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2806         spin_unlock_irqrestore(&priv->lock, flags);
2807
2808         if (rc)
2809                 return rc;
2810
2811         if ((iwl3945_queue_space(q) < q->high_mark)
2812             && priv->mac80211_registered) {
2813                 if (wait_write_ptr) {
2814                         spin_lock_irqsave(&priv->lock, flags);
2815                         txq->need_update = 1;
2816                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2817                         spin_unlock_irqrestore(&priv->lock, flags);
2818                 }
2819
2820                 ieee80211_stop_queue(priv->hw, ctl->queue);
2821         }
2822
2823         return 0;
2824
2825 drop_unlock:
2826         spin_unlock_irqrestore(&priv->lock, flags);
2827 drop:
2828         return -1;
2829 }
2830
2831 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2832 {
2833         const struct ieee80211_supported_band *sband = NULL;
2834         struct ieee80211_rate *rate;
2835         int i;
2836
2837         sband = iwl3945_get_band(priv, priv->band);
2838         if (!sband) {
2839                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2840                 return;
2841         }
2842
2843         priv->active_rate = 0;
2844         priv->active_rate_basic = 0;
2845
2846         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2847                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2848
2849         for (i = 0; i < sband->n_bitrates; i++) {
2850                 rate = &sband->bitrates[i];
2851                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2852                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2853                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2854                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2855                         priv->active_rate |= (1 << rate->hw_value);
2856                 }
2857         }
2858
2859         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2860                        priv->active_rate, priv->active_rate_basic);
2861
2862         /*
2863          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2864          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2865          * OFDM
2866          */
2867         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2868                 priv->staging_rxon.cck_basic_rates =
2869                     ((priv->active_rate_basic &
2870                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2871         else
2872                 priv->staging_rxon.cck_basic_rates =
2873                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2874
2875         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2876                 priv->staging_rxon.ofdm_basic_rates =
2877                     ((priv->active_rate_basic &
2878                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2879                       IWL_FIRST_OFDM_RATE) & 0xFF;
2880         else
2881                 priv->staging_rxon.ofdm_basic_rates =
2882                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2883 }
2884
2885 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
2886 {
2887         unsigned long flags;
2888
2889         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2890                 return;
2891
2892         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2893                           disable_radio ? "OFF" : "ON");
2894
2895         if (disable_radio) {
2896                 iwl3945_scan_cancel(priv);
2897                 /* FIXME: This is a workaround for AP */
2898                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2899                         spin_lock_irqsave(&priv->lock, flags);
2900                         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
2901                                     CSR_UCODE_SW_BIT_RFKILL);
2902                         spin_unlock_irqrestore(&priv->lock, flags);
2903                         iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2904                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2905                 }
2906                 return;
2907         }
2908
2909         spin_lock_irqsave(&priv->lock, flags);
2910         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2911
2912         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2913         spin_unlock_irqrestore(&priv->lock, flags);
2914
2915         /* wake up ucode */
2916         msleep(10);
2917
2918         spin_lock_irqsave(&priv->lock, flags);
2919         iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
2920         if (!iwl3945_grab_nic_access(priv))
2921                 iwl3945_release_nic_access(priv);
2922         spin_unlock_irqrestore(&priv->lock, flags);
2923
2924         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2925                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2926                                   "disabled by HW switch\n");
2927                 return;
2928         }
2929
2930         queue_work(priv->workqueue, &priv->restart);
2931         return;
2932 }
2933
2934 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
2935                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2936 {
2937         u16 fc =
2938             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2939
2940         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2941                 return;
2942
2943         if (!(fc & IEEE80211_FCTL_PROTECTED))
2944                 return;
2945
2946         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2947         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2948         case RX_RES_STATUS_SEC_TYPE_TKIP:
2949                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2950                     RX_RES_STATUS_BAD_ICV_MIC)
2951                         stats->flag |= RX_FLAG_MMIC_ERROR;
2952         case RX_RES_STATUS_SEC_TYPE_WEP:
2953         case RX_RES_STATUS_SEC_TYPE_CCMP:
2954                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2955                     RX_RES_STATUS_DECRYPT_OK) {
2956                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2957                         stats->flag |= RX_FLAG_DECRYPTED;
2958                 }
2959                 break;
2960
2961         default:
2962                 break;
2963         }
2964 }
2965
2966 #define IWL_PACKET_RETRY_TIME HZ
2967
2968 int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2969 {
2970         u16 sc = le16_to_cpu(header->seq_ctrl);
2971         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2972         u16 frag = sc & IEEE80211_SCTL_FRAG;
2973         u16 *last_seq, *last_frag;
2974         unsigned long *last_time;
2975
2976         switch (priv->iw_mode) {
2977         case IEEE80211_IF_TYPE_IBSS:{
2978                 struct list_head *p;
2979                 struct iwl3945_ibss_seq *entry = NULL;
2980                 u8 *mac = header->addr2;
2981                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2982
2983                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2984                         entry = list_entry(p, struct iwl3945_ibss_seq, list);
2985                         if (!compare_ether_addr(entry->mac, mac))
2986                                 break;
2987                 }
2988                 if (p == &priv->ibss_mac_hash[index]) {
2989                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2990                         if (!entry) {
2991                                 IWL_ERROR("Cannot malloc new mac entry\n");
2992                                 return 0;
2993                         }
2994                         memcpy(entry->mac, mac, ETH_ALEN);
2995                         entry->seq_num = seq;
2996                         entry->frag_num = frag;
2997                         entry->packet_time = jiffies;
2998                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2999                         return 0;
3000                 }
3001                 last_seq = &entry->seq_num;
3002                 last_frag = &entry->frag_num;
3003                 last_time = &entry->packet_time;
3004                 break;
3005         }
3006         case IEEE80211_IF_TYPE_STA:
3007                 last_seq = &priv->last_seq_num;
3008                 last_frag = &priv->last_frag_num;
3009                 last_time = &priv->last_packet_time;
3010                 break;
3011         default:
3012                 return 0;
3013         }
3014         if ((*last_seq == seq) &&
3015             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3016                 if (*last_frag == frag)
3017                         goto drop;
3018                 if (*last_frag + 1 != frag)
3019                         /* out-of-order fragment */
3020                         goto drop;
3021         } else
3022                 *last_seq = seq;
3023
3024         *last_frag = frag;
3025         *last_time = jiffies;
3026         return 0;
3027
3028  drop:
3029         return 1;
3030 }
3031
3032 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3033
3034 #include "iwl-spectrum.h"
3035
3036 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3037 #define BEACON_TIME_MASK_HIGH   0xFF000000
3038 #define TIME_UNIT               1024
3039
3040 /*
3041  * extended beacon time format
3042  * time in usec will be changed into a 32-bit value in 8:24 format
3043  * the high 1 byte is the beacon counts
3044  * the lower 3 bytes is the time in usec within one beacon interval
3045  */
3046
3047 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
3048 {
3049         u32 quot;
3050         u32 rem;
3051         u32 interval = beacon_interval * 1024;
3052
3053         if (!interval || !usec)
3054                 return 0;
3055
3056         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3057         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3058
3059         return (quot << 24) + rem;
3060 }
3061
3062 /* base is usually what we get from ucode with each received frame,
3063  * the same as HW timer counter counting down
3064  */
3065
3066 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3067 {
3068         u32 base_low = base & BEACON_TIME_MASK_LOW;
3069         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3070         u32 interval = beacon_interval * TIME_UNIT;
3071         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3072             (addon & BEACON_TIME_MASK_HIGH);
3073
3074         if (base_low > addon_low)
3075                 res += base_low - addon_low;
3076         else if (base_low < addon_low) {
3077                 res += interval + base_low - addon_low;
3078                 res += (1 << 24);
3079         } else
3080                 res += (1 << 24);
3081
3082         return cpu_to_le32(res);
3083 }
3084
3085 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
3086                                struct ieee80211_measurement_params *params,
3087                                u8 type)
3088 {
3089         struct iwl3945_spectrum_cmd spectrum;
3090         struct iwl3945_rx_packet *res;
3091         struct iwl3945_host_cmd cmd = {
3092                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3093                 .data = (void *)&spectrum,
3094                 .meta.flags = CMD_WANT_SKB,
3095         };
3096         u32 add_time = le64_to_cpu(params->start_time);
3097         int rc;
3098         int spectrum_resp_status;
3099         int duration = le16_to_cpu(params->duration);
3100
3101         if (iwl3945_is_associated(priv))
3102                 add_time =
3103                     iwl3945_usecs_to_beacons(
3104                         le64_to_cpu(params->start_time) - priv->last_tsf,
3105                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3106
3107         memset(&spectrum, 0, sizeof(spectrum));
3108
3109         spectrum.channel_count = cpu_to_le16(1);
3110         spectrum.flags =
3111             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3112         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3113         cmd.len = sizeof(spectrum);
3114         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3115
3116         if (iwl3945_is_associated(priv))
3117                 spectrum.start_time =
3118                     iwl3945_add_beacon_time(priv->last_beacon_time,
3119                                 add_time,
3120                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3121         else
3122                 spectrum.start_time = 0;
3123
3124         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3125         spectrum.channels[0].channel = params->channel;
3126         spectrum.channels[0].type = type;
3127         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3128                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3129                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3130
3131         rc = iwl3945_send_cmd_sync(priv, &cmd);
3132         if (rc)
3133                 return rc;
3134
3135         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
3136         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3137                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3138                 rc = -EIO;
3139         }
3140
3141         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3142         switch (spectrum_resp_status) {
3143         case 0:         /* Command will be handled */
3144                 if (res->u.spectrum.id != 0xff) {
3145                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
3146                                                 res->u.spectrum.id);
3147                         priv->measurement_status &= ~MEASUREMENT_READY;
3148                 }
3149                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3150                 rc = 0;
3151                 break;
3152
3153         case 1:         /* Command will not be handled */
3154                 rc = -EAGAIN;
3155                 break;
3156         }
3157
3158         dev_kfree_skb_any(cmd.meta.u.skb);
3159
3160         return rc;
3161 }
3162 #endif
3163
3164 static void iwl3945_txstatus_to_ieee(struct iwl3945_priv *priv,
3165                                  struct iwl3945_tx_info *tx_sta)
3166 {
3167
3168         tx_sta->status.ack_signal = 0;
3169         tx_sta->status.excessive_retries = 0;
3170         tx_sta->status.queue_length = 0;
3171         tx_sta->status.queue_number = 0;
3172
3173         if (in_interrupt())
3174                 ieee80211_tx_status_irqsafe(priv->hw,
3175                                             tx_sta->skb[0], &(tx_sta->status));
3176         else
3177                 ieee80211_tx_status(priv->hw,
3178                                     tx_sta->skb[0], &(tx_sta->status));
3179
3180         tx_sta->skb[0] = NULL;
3181 }
3182
3183 /**
3184  * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3185  *
3186  * When FW advances 'R' index, all entries between old and new 'R' index
3187  * need to be reclaimed. As result, some free space forms. If there is
3188  * enough free space (> low mark), wake the stack that feeds us.
3189  */
3190 static int iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv, int txq_id, int index)
3191 {
3192         struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3193         struct iwl3945_queue *q = &txq->q;
3194         int nfreed = 0;
3195
3196         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3197                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3198                           "is out of range [0-%d] %d %d.\n", txq_id,
3199                           index, q->n_bd, q->write_ptr, q->read_ptr);
3200                 return 0;
3201         }
3202
3203         for (index = iwl3945_queue_inc_wrap(index, q->n_bd);
3204                 q->read_ptr != index;
3205                 q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3206                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3207                         iwl3945_txstatus_to_ieee(priv,
3208                                         &(txq->txb[txq->q.read_ptr]));
3209                         iwl3945_hw_txq_free_tfd(priv, txq);
3210                 } else if (nfreed > 1) {
3211                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3212                                         q->write_ptr, q->read_ptr);
3213                         queue_work(priv->workqueue, &priv->restart);
3214                 }
3215                 nfreed++;
3216         }
3217
3218         if (iwl3945_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3219                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3220                         priv->mac80211_registered)
3221                 ieee80211_wake_queue(priv->hw, txq_id);
3222
3223
3224         return nfreed;
3225 }
3226
3227 static int iwl3945_is_tx_success(u32 status)
3228 {
3229         return (status & 0xFF) == 0x1;
3230 }
3231
3232 /******************************************************************************
3233  *
3234  * Generic RX handler implementations
3235  *
3236  ******************************************************************************/
3237 /**
3238  * iwl3945_rx_reply_tx - Handle Tx response
3239  */
3240 static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
3241                             struct iwl3945_rx_mem_buffer *rxb)
3242 {
3243         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3244         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3245         int txq_id = SEQ_TO_QUEUE(sequence);
3246         int index = SEQ_TO_INDEX(sequence);
3247         struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3248         struct ieee80211_tx_status *tx_status;
3249         struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3250         u32  status = le32_to_cpu(tx_resp->status);
3251
3252         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3253                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3254                           "is out of range [0-%d] %d %d\n", txq_id,
3255                           index, txq->q.n_bd, txq->q.write_ptr,
3256                           txq->q.read_ptr);
3257                 return;
3258         }
3259
3260         tx_status = &(txq->txb[txq->q.read_ptr].status);
3261
3262         tx_status->retry_count = tx_resp->failure_frame;
3263         tx_status->queue_number = status;
3264         tx_status->queue_length = tx_resp->bt_kill_count;
3265         tx_status->queue_length |= tx_resp->failure_rts;
3266
3267         tx_status->flags =
3268             iwl3945_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3269
3270         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
3271                         txq_id, iwl3945_get_tx_fail_reason(status), status,
3272                         tx_resp->rate, tx_resp->failure_frame);
3273
3274         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3275         if (index != -1)
3276                 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3277
3278         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3279                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3280 }
3281
3282
3283 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
3284                                struct iwl3945_rx_mem_buffer *rxb)
3285 {
3286         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3287         struct iwl3945_alive_resp *palive;
3288         struct delayed_work *pwork;
3289
3290         palive = &pkt->u.alive_frame;
3291
3292         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3293                        "0x%01X 0x%01X\n",
3294                        palive->is_valid, palive->ver_type,
3295                        palive->ver_subtype);
3296
3297         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3298                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3299                 memcpy(&priv->card_alive_init,
3300                        &pkt->u.alive_frame,
3301                        sizeof(struct iwl3945_init_alive_resp));
3302                 pwork = &priv->init_alive_start;
3303         } else {
3304                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3305                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3306                        sizeof(struct iwl3945_alive_resp));
3307                 pwork = &priv->alive_start;
3308                 iwl3945_disable_events(priv);
3309         }
3310
3311         /* We delay the ALIVE response by 5ms to
3312          * give the HW RF Kill time to activate... */
3313         if (palive->is_valid == UCODE_VALID_OK)
3314                 queue_delayed_work(priv->workqueue, pwork,
3315                                    msecs_to_jiffies(5));
3316         else
3317                 IWL_WARNING("uCode did not respond OK.\n");
3318 }
3319
3320 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
3321                                  struct iwl3945_rx_mem_buffer *rxb)
3322 {
3323         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3324
3325         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3326         return;
3327 }
3328
3329 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
3330                                struct iwl3945_rx_mem_buffer *rxb)
3331 {
3332         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3333
3334         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3335                 "seq 0x%04X ser 0x%08X\n",
3336                 le32_to_cpu(pkt->u.err_resp.error_type),
3337                 get_cmd_string(pkt->u.err_resp.cmd_id),
3338                 pkt->u.err_resp.cmd_id,
3339                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3340                 le32_to_cpu(pkt->u.err_resp.error_info));
3341 }
3342
3343 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3344
3345 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3346 {
3347         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3348         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3349         struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
3350         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3351                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3352         rxon->channel = csa->channel;
3353         priv->staging_rxon.channel = csa->channel;
3354 }
3355
3356 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3357                                           struct iwl3945_rx_mem_buffer *rxb)
3358 {
3359 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3360         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3361         struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
3362
3363         if (!report->state) {
3364                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3365                           "Spectrum Measure Notification: Start\n");
3366                 return;
3367         }
3368
3369         memcpy(&priv->measure_report, report, sizeof(*report));
3370         priv->measurement_status |= MEASUREMENT_READY;
3371 #endif
3372 }
3373
3374 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3375                                   struct iwl3945_rx_mem_buffer *rxb)
3376 {
3377 #ifdef CONFIG_IWL3945_DEBUG
3378         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3379         struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
3380         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3381                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3382 #endif
3383 }
3384
3385 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3386                                              struct iwl3945_rx_mem_buffer *rxb)
3387 {
3388         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3389         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3390                         "notification for %s:\n",
3391                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3392         iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3393 }
3394
3395 static void iwl3945_bg_beacon_update(struct work_struct *work)
3396 {
3397         struct iwl3945_priv *priv =
3398                 container_of(work, struct iwl3945_priv, beacon_update);
3399         struct sk_buff *beacon;
3400
3401         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3402         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3403
3404         if (!beacon) {
3405                 IWL_ERROR("update beacon failed\n");
3406                 return;
3407         }
3408
3409         mutex_lock(&priv->mutex);
3410         /* new beacon skb is allocated every time; dispose previous.*/
3411         if (priv->ibss_beacon)
3412                 dev_kfree_skb(priv->ibss_beacon);
3413
3414         priv->ibss_beacon = beacon;
3415         mutex_unlock(&priv->mutex);
3416
3417         iwl3945_send_beacon_cmd(priv);
3418 }
3419
3420 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3421                                 struct iwl3945_rx_mem_buffer *rxb)
3422 {
3423 #ifdef CONFIG_IWL3945_DEBUG
3424         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3425         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3426         u8 rate = beacon->beacon_notify_hdr.rate;
3427
3428         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3429                 "tsf %d %d rate %d\n",
3430                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3431                 beacon->beacon_notify_hdr.failure_frame,
3432                 le32_to_cpu(beacon->ibss_mgr_status),
3433                 le32_to_cpu(beacon->high_tsf),
3434                 le32_to_cpu(beacon->low_tsf), rate);
3435 #endif
3436
3437         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3438             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3439                 queue_work(priv->workqueue, &priv->beacon_update);
3440 }
3441
3442 /* Service response to REPLY_SCAN_CMD (0x80) */
3443 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3444                               struct iwl3945_rx_mem_buffer *rxb)
3445 {
3446 #ifdef CONFIG_IWL3945_DEBUG
3447         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3448         struct iwl3945_scanreq_notification *notif =
3449             (struct iwl3945_scanreq_notification *)pkt->u.raw;
3450
3451         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3452 #endif
3453 }
3454
3455 /* Service SCAN_START_NOTIFICATION (0x82) */
3456 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3457                                     struct iwl3945_rx_mem_buffer *rxb)
3458 {
3459         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3460         struct iwl3945_scanstart_notification *notif =
3461             (struct iwl3945_scanstart_notification *)pkt->u.raw;
3462         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3463         IWL_DEBUG_SCAN("Scan start: "
3464                        "%d [802.11%s] "
3465                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3466                        notif->channel,
3467                        notif->band ? "bg" : "a",
3468                        notif->tsf_high,
3469                        notif->tsf_low, notif->status, notif->beacon_timer);
3470 }
3471
3472 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3473 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3474                                       struct iwl3945_rx_mem_buffer *rxb)
3475 {
3476         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3477         struct iwl3945_scanresults_notification *notif =
3478             (struct iwl3945_scanresults_notification *)pkt->u.raw;
3479
3480         IWL_DEBUG_SCAN("Scan ch.res: "
3481                        "%d [802.11%s] "
3482                        "(TSF: 0x%08X:%08X) - %d "
3483                        "elapsed=%lu usec (%dms since last)\n",
3484                        notif->channel,
3485                        notif->band ? "bg" : "a",
3486                        le32_to_cpu(notif->tsf_high),
3487                        le32_to_cpu(notif->tsf_low),
3488                        le32_to_cpu(notif->statistics[0]),
3489                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3490                        jiffies_to_msecs(elapsed_jiffies
3491                                         (priv->last_scan_jiffies, jiffies)));
3492
3493         priv->last_scan_jiffies = jiffies;
3494         priv->next_scan_jiffies = 0;
3495 }
3496
3497 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3498 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3499                                        struct iwl3945_rx_mem_buffer *rxb)
3500 {
3501         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3502         struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3503
3504         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3505                        scan_notif->scanned_channels,
3506                        scan_notif->tsf_low,
3507                        scan_notif->tsf_high, scan_notif->status);
3508
3509         /* The HW is no longer scanning */
3510         clear_bit(STATUS_SCAN_HW, &priv->status);
3511
3512         /* The scan completion notification came in, so kill that timer... */
3513         cancel_delayed_work(&priv->scan_check);
3514
3515         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3516                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3517                        jiffies_to_msecs(elapsed_jiffies
3518                                         (priv->scan_pass_start, jiffies)));
3519
3520         /* Remove this scanned band from the list
3521          * of pending bands to scan */
3522         priv->scan_bands--;
3523
3524         /* If a request to abort was given, or the scan did not succeed
3525          * then we reset the scan state machine and terminate,
3526          * re-queuing another scan if one has been requested */
3527         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3528                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3529                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3530         } else {
3531                 /* If there are more bands on this scan pass reschedule */
3532                 if (priv->scan_bands > 0)
3533                         goto reschedule;
3534         }
3535
3536         priv->last_scan_jiffies = jiffies;
3537         priv->next_scan_jiffies = 0;
3538         IWL_DEBUG_INFO("Setting scan to off\n");
3539
3540         clear_bit(STATUS_SCANNING, &priv->status);
3541
3542         IWL_DEBUG_INFO("Scan took %dms\n",
3543                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3544
3545         queue_work(priv->workqueue, &priv->scan_completed);
3546
3547         return;
3548
3549 reschedule:
3550         priv->scan_pass_start = jiffies;
3551         queue_work(priv->workqueue, &priv->request_scan);
3552 }
3553
3554 /* Handle notification from uCode that card's power state is changing
3555  * due to software, hardware, or critical temperature RFKILL */
3556 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3557                                     struct iwl3945_rx_mem_buffer *rxb)
3558 {
3559         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3560         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3561         unsigned long status = priv->status;
3562
3563         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3564                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3565                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3566
3567         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3568                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3569
3570         if (flags & HW_CARD_DISABLED)
3571                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3572         else
3573                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3574
3575
3576         if (flags & SW_CARD_DISABLED)
3577                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3578         else
3579                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3580
3581         iwl3945_scan_cancel(priv);
3582
3583         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3584              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3585             (test_bit(STATUS_RF_KILL_SW, &status) !=
3586              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3587                 queue_work(priv->workqueue, &priv->rf_kill);
3588         else
3589                 wake_up_interruptible(&priv->wait_command_queue);
3590 }
3591
3592 /**
3593  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3594  *
3595  * Setup the RX handlers for each of the reply types sent from the uCode
3596  * to the host.
3597  *
3598  * This function chains into the hardware specific files for them to setup
3599  * any hardware specific handlers as well.
3600  */
3601 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3602 {
3603         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3604         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3605         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3606         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3607         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3608             iwl3945_rx_spectrum_measure_notif;
3609         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3610         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3611             iwl3945_rx_pm_debug_statistics_notif;
3612         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3613
3614         /*
3615          * The same handler is used for both the REPLY to a discrete
3616          * statistics request from the host as well as for the periodic
3617          * statistics notifications (after received beacons) from the uCode.
3618          */
3619         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3620         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3621
3622         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3623         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3624         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3625             iwl3945_rx_scan_results_notif;
3626         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3627             iwl3945_rx_scan_complete_notif;
3628         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3629         priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
3630
3631         /* Set up hardware specific Rx handlers */
3632         iwl3945_hw_rx_handler_setup(priv);
3633 }
3634
3635 /**
3636  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3637  * @rxb: Rx buffer to reclaim
3638  *
3639  * If an Rx buffer has an async callback associated with it the callback
3640  * will be executed.  The attached skb (if present) will only be freed
3641  * if the callback returns 1
3642  */
3643 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3644                                 struct iwl3945_rx_mem_buffer *rxb)
3645 {
3646         struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3647         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3648         int txq_id = SEQ_TO_QUEUE(sequence);
3649         int index = SEQ_TO_INDEX(sequence);
3650         int huge = sequence & SEQ_HUGE_FRAME;
3651         int cmd_index;
3652         struct iwl3945_cmd *cmd;
3653
3654         /* If a Tx command is being handled and it isn't in the actual
3655          * command queue then there a command routing bug has been introduced
3656          * in the queue management code. */
3657         if (txq_id != IWL_CMD_QUEUE_NUM)
3658                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3659                           txq_id, pkt->hdr.cmd);
3660         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3661
3662         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3663         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3664
3665         /* Input error checking is done when commands are added to queue. */
3666         if (cmd->meta.flags & CMD_WANT_SKB) {
3667                 cmd->meta.source->u.skb = rxb->skb;
3668                 rxb->skb = NULL;
3669         } else if (cmd->meta.u.callback &&
3670                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3671                 rxb->skb = NULL;
3672
3673         iwl3945_tx_queue_reclaim(priv, txq_id, index);
3674
3675         if (!(cmd->meta.flags & CMD_ASYNC)) {
3676                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3677                 wake_up_interruptible(&priv->wait_command_queue);
3678         }
3679 }
3680
3681 /************************** RX-FUNCTIONS ****************************/
3682 /*
3683  * Rx theory of operation
3684  *
3685  * The host allocates 32 DMA target addresses and passes the host address
3686  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3687  * 0 to 31
3688  *
3689  * Rx Queue Indexes
3690  * The host/firmware share two index registers for managing the Rx buffers.
3691  *
3692  * The READ index maps to the first position that the firmware may be writing
3693  * to -- the driver can read up to (but not including) this position and get
3694  * good data.
3695  * The READ index is managed by the firmware once the card is enabled.
3696  *
3697  * The WRITE index maps to the last position the driver has read from -- the
3698  * position preceding WRITE is the last slot the firmware can place a packet.
3699  *
3700  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3701  * WRITE = READ.
3702  *
3703  * During initialization, the host sets up the READ queue position to the first
3704  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3705  *
3706  * When the firmware places a packet in a buffer, it will advance the READ index
3707  * and fire the RX interrupt.  The driver can then query the READ index and
3708  * process as many packets as possible, moving the WRITE index forward as it
3709  * resets the Rx queue buffers with new memory.
3710  *
3711  * The management in the driver is as follows:
3712  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3713  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3714  *   to replenish the iwl->rxq->rx_free.
3715  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3716  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3717  *   'processed' and 'read' driver indexes as well)
3718  * + A received packet is processed and handed to the kernel network stack,
3719  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3720  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3721  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3722  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3723  *   were enough free buffers and RX_STALLED is set it is cleared.
3724  *
3725  *
3726  * Driver sequence:
3727  *
3728  * iwl3945_rx_queue_alloc()   Allocates rx_free
3729  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3730  *                            iwl3945_rx_queue_restock
3731  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3732  *                            queue, updates firmware pointers, and updates
3733  *                            the WRITE index.  If insufficient rx_free buffers
3734  *                            are available, schedules iwl3945_rx_replenish
3735  *
3736  * -- enable interrupts --
3737  * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
3738  *                            READ INDEX, detaching the SKB from the pool.
3739  *                            Moves the packet buffer from queue to rx_used.
3740  *                            Calls iwl3945_rx_queue_restock to refill any empty
3741  *                            slots.
3742  * ...
3743  *
3744  */
3745
3746 /**
3747  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3748  */
3749 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3750 {
3751         int s = q->read - q->write;
3752         if (s <= 0)
3753                 s += RX_QUEUE_SIZE;
3754         /* keep some buffer to not confuse full and empty queue */
3755         s -= 2;
3756         if (s < 0)
3757                 s = 0;
3758         return s;
3759 }
3760
3761 /**
3762  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3763  */
3764 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
3765 {
3766         u32 reg = 0;
3767         int rc = 0;
3768         unsigned long flags;
3769
3770         spin_lock_irqsave(&q->lock, flags);
3771
3772         if (q->need_update == 0)
3773                 goto exit_unlock;
3774
3775         /* If power-saving is in use, make sure device is awake */
3776         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3777                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3778
3779                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3780                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
3781                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3782                         goto exit_unlock;
3783                 }
3784
3785                 rc = iwl3945_grab_nic_access(priv);
3786                 if (rc)
3787                         goto exit_unlock;
3788
3789                 /* Device expects a multiple of 8 */
3790                 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3791                                      q->write & ~0x7);
3792                 iwl3945_release_nic_access(priv);
3793
3794         /* Else device is assumed to be awake */
3795         } else
3796                 /* Device expects a multiple of 8 */
3797                 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3798
3799
3800         q->need_update = 0;
3801
3802  exit_unlock:
3803         spin_unlock_irqrestore(&q->lock, flags);
3804         return rc;
3805 }
3806
3807 /**
3808  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3809  */
3810 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
3811                                           dma_addr_t dma_addr)
3812 {
3813         return cpu_to_le32((u32)dma_addr);
3814 }
3815
3816 /**
3817  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3818  *
3819  * If there are slots in the RX queue that need to be restocked,
3820  * and we have free pre-allocated buffers, fill the ranks as much
3821  * as we can, pulling from rx_free.
3822  *
3823  * This moves the 'write' index forward to catch up with 'processed', and
3824  * also updates the memory address in the firmware to reference the new
3825  * target buffer.
3826  */
3827 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
3828 {
3829         struct iwl3945_rx_queue *rxq = &priv->rxq;
3830         struct list_head *element;
3831         struct iwl3945_rx_mem_buffer *rxb;
3832         unsigned long flags;
3833         int write, rc;
3834
3835         spin_lock_irqsave(&rxq->lock, flags);
3836         write = rxq->write & ~0x7;
3837         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3838                 /* Get next free Rx buffer, remove from free list */
3839                 element = rxq->rx_free.next;
3840                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3841                 list_del(element);
3842
3843                 /* Point to Rx buffer via next RBD in circular buffer */
3844                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3845                 rxq->queue[rxq->write] = rxb;
3846                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3847                 rxq->free_count--;
3848         }
3849         spin_unlock_irqrestore(&rxq->lock, flags);
3850         /* If the pre-allocated buffer pool is dropping low, schedule to
3851          * refill it */
3852         if (rxq->free_count <= RX_LOW_WATERMARK)
3853                 queue_work(priv->workqueue, &priv->rx_replenish);
3854
3855
3856         /* If we've added more space for the firmware to place data, tell it.
3857          * Increment device's write pointer in multiples of 8. */
3858         if ((write != (rxq->write & ~0x7))
3859             || (abs(rxq->write - rxq->read) > 7)) {
3860                 spin_lock_irqsave(&rxq->lock, flags);
3861                 rxq->need_update = 1;
3862                 spin_unlock_irqrestore(&rxq->lock, flags);
3863                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3864                 if (rc)
3865                         return rc;
3866         }
3867
3868         return 0;
3869 }
3870
3871 /**
3872  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3873  *
3874  * When moving to rx_free an SKB is allocated for the slot.
3875  *
3876  * Also restock the Rx queue via iwl3945_rx_queue_restock.
3877  * This is called as a scheduled work item (except for during initialization)
3878  */
3879 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
3880 {
3881         struct iwl3945_rx_queue *rxq = &priv->rxq;
3882         struct list_head *element;
3883         struct iwl3945_rx_mem_buffer *rxb;
3884         unsigned long flags;
3885         spin_lock_irqsave(&rxq->lock, flags);
3886         while (!list_empty(&rxq->rx_used)) {
3887                 element = rxq->rx_used.next;
3888                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3889
3890                 /* Alloc a new receive buffer */
3891                 rxb->skb =
3892                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3893                 if (!rxb->skb) {
3894                         if (net_ratelimit())
3895                                 printk(KERN_CRIT DRV_NAME
3896                                        ": Can not allocate SKB buffers\n");
3897                         /* We don't reschedule replenish work here -- we will
3898                          * call the restock method and if it still needs
3899                          * more buffers it will schedule replenish */
3900                         break;
3901                 }
3902
3903                 /* If radiotap head is required, reserve some headroom here.
3904                  * The physical head count is a variable rx_stats->phy_count.
3905                  * We reserve 4 bytes here. Plus these extra bytes, the
3906                  * headroom of the physical head should be enough for the
3907                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3908                  */
3909                 skb_reserve(rxb->skb, 4);
3910
3911                 priv->alloc_rxb_skb++;
3912                 list_del(element);
3913
3914                 /* Get physical address of RB/SKB */
3915                 rxb->dma_addr =
3916                     pci_map_single(priv->pci_dev, rxb->skb->data,
3917                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3918                 list_add_tail(&rxb->list, &rxq->rx_free);
3919                 rxq->free_count++;
3920         }
3921         spin_unlock_irqrestore(&rxq->lock, flags);
3922 }
3923
3924 /*
3925  * this should be called while priv->lock is locked
3926  */
3927 static void __iwl3945_rx_replenish(void *data)
3928 {
3929         struct iwl3945_priv *priv = data;
3930
3931         iwl3945_rx_allocate(priv);
3932         iwl3945_rx_queue_restock(priv);
3933 }
3934
3935
3936 void iwl3945_rx_replenish(void *data)
3937 {
3938         struct iwl3945_priv *priv = data;
3939         unsigned long flags;
3940
3941         iwl3945_rx_allocate(priv);
3942
3943         spin_lock_irqsave(&priv->lock, flags);
3944         iwl3945_rx_queue_restock(priv);
3945         spin_unlock_irqrestore(&priv->lock, flags);
3946 }
3947
3948 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3949  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3950  * This free routine walks the list of POOL entries and if SKB is set to
3951  * non NULL it is unmapped and freed
3952  */
3953 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3954 {
3955         int i;
3956         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3957                 if (rxq->pool[i].skb != NULL) {
3958                         pci_unmap_single(priv->pci_dev,
3959                                          rxq->pool[i].dma_addr,
3960                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3961                         dev_kfree_skb(rxq->pool[i].skb);
3962                 }
3963         }
3964
3965         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3966                             rxq->dma_addr);
3967         rxq->bd = NULL;
3968 }
3969
3970 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
3971 {
3972         struct iwl3945_rx_queue *rxq = &priv->rxq;
3973         struct pci_dev *dev = priv->pci_dev;
3974         int i;
3975
3976         spin_lock_init(&rxq->lock);
3977         INIT_LIST_HEAD(&rxq->rx_free);
3978         INIT_LIST_HEAD(&rxq->rx_used);
3979
3980         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3981         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3982         if (!rxq->bd)
3983                 return -ENOMEM;
3984
3985         /* Fill the rx_used queue with _all_ of the Rx buffers */
3986         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3987                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3988
3989         /* Set us so that we have processed and used all buffers, but have
3990          * not restocked the Rx queue with fresh buffers */
3991         rxq->read = rxq->write = 0;
3992         rxq->free_count = 0;
3993         rxq->need_update = 0;
3994         return 0;
3995 }
3996
3997 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3998 {
3999         unsigned long flags;
4000         int i;
4001         spin_lock_irqsave(&rxq->lock, flags);
4002         INIT_LIST_HEAD(&rxq->rx_free);
4003         INIT_LIST_HEAD(&rxq->rx_used);
4004         /* Fill the rx_used queue with _all_ of the Rx buffers */
4005         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4006                 /* In the reset function, these buffers may have been allocated
4007                  * to an SKB, so we need to unmap and free potential storage */
4008                 if (rxq->pool[i].skb != NULL) {
4009                         pci_unmap_single(priv->pci_dev,
4010                                          rxq->pool[i].dma_addr,
4011                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4012                         priv->alloc_rxb_skb--;
4013                         dev_kfree_skb(rxq->pool[i].skb);
4014                         rxq->pool[i].skb = NULL;
4015                 }
4016                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4017         }
4018
4019         /* Set us so that we have processed and used all buffers, but have
4020          * not restocked the Rx queue with fresh buffers */
4021         rxq->read = rxq->write = 0;
4022         rxq->free_count = 0;
4023         spin_unlock_irqrestore(&rxq->lock, flags);
4024 }
4025
4026 /* Convert linear signal-to-noise ratio into dB */
4027 static u8 ratio2dB[100] = {
4028 /*       0   1   2   3   4   5   6   7   8   9 */
4029          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4030         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4031         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4032         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4033         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4034         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4035         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4036         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4037         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4038         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4039 };
4040
4041 /* Calculates a relative dB value from a ratio of linear
4042  *   (i.e. not dB) signal levels.
4043  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4044 int iwl3945_calc_db_from_ratio(int sig_ratio)
4045 {
4046         /* 1000:1 or higher just report as 60 dB */
4047         if (sig_ratio >= 1000)
4048                 return 60;
4049
4050         /* 100:1 or higher, divide by 10 and use table,
4051          *   add 20 dB to make up for divide by 10 */
4052         if (sig_ratio >= 100)
4053                 return (20 + (int)ratio2dB[sig_ratio/10]);
4054
4055         /* We shouldn't see this */
4056         if (sig_ratio < 1)
4057                 return 0;
4058
4059         /* Use table for ratios 1:1 - 99:1 */
4060         return (int)ratio2dB[sig_ratio];
4061 }
4062
4063 #define PERFECT_RSSI (-20) /* dBm */
4064 #define WORST_RSSI (-95)   /* dBm */
4065 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4066
4067 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4068  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4069  *   about formulas used below. */
4070 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
4071 {
4072         int sig_qual;
4073         int degradation = PERFECT_RSSI - rssi_dbm;
4074
4075         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4076          * as indicator; formula is (signal dbm - noise dbm).
4077          * SNR at or above 40 is a great signal (100%).
4078          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4079          * Weakest usable signal is usually 10 - 15 dB SNR. */
4080         if (noise_dbm) {
4081                 if (rssi_dbm - noise_dbm >= 40)
4082                         return 100;
4083                 else if (rssi_dbm < noise_dbm)
4084                         return 0;
4085                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4086
4087         /* Else use just the signal level.
4088          * This formula is a least squares fit of data points collected and
4089          *   compared with a reference system that had a percentage (%) display
4090          *   for signal quality. */
4091         } else
4092                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4093                             (15 * RSSI_RANGE + 62 * degradation)) /
4094                            (RSSI_RANGE * RSSI_RANGE);
4095
4096         if (sig_qual > 100)
4097                 sig_qual = 100;
4098         else if (sig_qual < 1)
4099                 sig_qual = 0;
4100
4101         return sig_qual;
4102 }
4103
4104 /**
4105  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
4106  *
4107  * Uses the priv->rx_handlers callback function array to invoke
4108  * the appropriate handlers, including command responses,
4109  * frame-received notifications, and other notifications.
4110  */
4111 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
4112 {
4113         struct iwl3945_rx_mem_buffer *rxb;
4114         struct iwl3945_rx_packet *pkt;
4115         struct iwl3945_rx_queue *rxq = &priv->rxq;
4116         u32 r, i;
4117         int reclaim;
4118         unsigned long flags;
4119         u8 fill_rx = 0;
4120         u32 count = 8;
4121
4122         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4123          * buffer that the driver may process (last buffer filled by ucode). */
4124         r = iwl3945_hw_get_rx_read(priv);
4125         i = rxq->read;
4126
4127         if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4128                 fill_rx = 1;
4129         /* Rx interrupt, but nothing sent from uCode */
4130         if (i == r)
4131                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4132
4133         while (i != r) {
4134                 rxb = rxq->queue[i];
4135
4136                 /* If an RXB doesn't have a Rx queue slot associated with it,
4137                  * then a bug has been introduced in the queue refilling
4138                  * routines -- catch it here */
4139                 BUG_ON(rxb == NULL);
4140
4141                 rxq->queue[i] = NULL;
4142
4143                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4144                                             IWL_RX_BUF_SIZE,
4145                                             PCI_DMA_FROMDEVICE);
4146                 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
4147
4148                 /* Reclaim a command buffer only if this packet is a response
4149                  *   to a (driver-originated) command.
4150                  * If the packet (e.g. Rx frame) originated from uCode,
4151                  *   there is no command buffer to reclaim.
4152                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4153                  *   but apparently a few don't get set; catch them here. */
4154                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4155                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4156                         (pkt->hdr.cmd != REPLY_TX);
4157
4158                 /* Based on type of command response or notification,
4159                  *   handle those that need handling via function in
4160                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
4161                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4162                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4163                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4164                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4165                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4166                 } else {
4167                         /* No handling needed */
4168                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4169                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4170                                 r, i, get_cmd_string(pkt->hdr.cmd),
4171                                 pkt->hdr.cmd);
4172                 }
4173
4174                 if (reclaim) {
4175                         /* Invoke any callbacks, transfer the skb to caller, and
4176                          * fire off the (possibly) blocking iwl3945_send_cmd()
4177                          * as we reclaim the driver command queue */
4178                         if (rxb && rxb->skb)
4179                                 iwl3945_tx_cmd_complete(priv, rxb);
4180                         else
4181                                 IWL_WARNING("Claim null rxb?\n");
4182                 }
4183
4184                 /* For now we just don't re-use anything.  We can tweak this
4185                  * later to try and re-use notification packets and SKBs that
4186                  * fail to Rx correctly */
4187                 if (rxb->skb != NULL) {
4188                         priv->alloc_rxb_skb--;
4189                         dev_kfree_skb_any(rxb->skb);
4190                         rxb->skb = NULL;
4191                 }
4192
4193                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4194                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4195                 spin_lock_irqsave(&rxq->lock, flags);
4196                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4197                 spin_unlock_irqrestore(&rxq->lock, flags);
4198                 i = (i + 1) & RX_QUEUE_MASK;
4199                 /* If there are a lot of unused frames,
4200                  * restock the Rx queue so ucode won't assert. */
4201                 if (fill_rx) {
4202                         count++;
4203                         if (count >= 8) {
4204                                 priv->rxq.read = i;
4205                                 __iwl3945_rx_replenish(priv);
4206                                 count = 0;
4207                         }
4208                 }
4209         }
4210
4211         /* Backtrack one entry */
4212         priv->rxq.read = i;
4213         iwl3945_rx_queue_restock(priv);
4214 }
4215
4216 /**
4217  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
4218  */
4219 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
4220                                   struct iwl3945_tx_queue *txq)
4221 {
4222         u32 reg = 0;
4223         int rc = 0;
4224         int txq_id = txq->q.id;
4225
4226         if (txq->need_update == 0)
4227                 return rc;
4228
4229         /* if we're trying to save power */
4230         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4231                 /* wake up nic if it's powered down ...
4232                  * uCode will wake up, and interrupt us again, so next
4233                  * time we'll skip this part. */
4234                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4235
4236                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4237                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4238                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
4239                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4240                         return rc;
4241                 }
4242
4243                 /* restore this queue's parameters in nic hardware. */
4244                 rc = iwl3945_grab_nic_access(priv);
4245                 if (rc)
4246                         return rc;
4247                 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4248                                      txq->q.write_ptr | (txq_id << 8));
4249                 iwl3945_release_nic_access(priv);
4250
4251         /* else not in power-save mode, uCode will never sleep when we're
4252          * trying to tx (during RFKILL, we're not trying to tx). */
4253         } else
4254                 iwl3945_write32(priv, HBUS_TARG_WRPTR,
4255                             txq->q.write_ptr | (txq_id << 8));
4256
4257         txq->need_update = 0;
4258
4259         return rc;
4260 }
4261
4262 #ifdef CONFIG_IWL3945_DEBUG
4263 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
4264 {
4265         DECLARE_MAC_BUF(mac);
4266
4267         IWL_DEBUG_RADIO("RX CONFIG:\n");
4268         iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4269         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4270         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4271         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4272                         le32_to_cpu(rxon->filter_flags));
4273         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4274         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4275                         rxon->ofdm_basic_rates);
4276         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4277         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4278                         print_mac(mac, rxon->node_addr));
4279         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4280                         print_mac(mac, rxon->bssid_addr));
4281         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4282 }
4283 #endif
4284
4285 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
4286 {
4287         IWL_DEBUG_ISR("Enabling interrupts\n");
4288         set_bit(STATUS_INT_ENABLED, &priv->status);
4289         iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4290 }
4291
4292 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
4293 {
4294         clear_bit(STATUS_INT_ENABLED, &priv->status);
4295
4296         /* disable interrupts from uCode/NIC to host */
4297         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4298
4299         /* acknowledge/clear/reset any interrupts still pending
4300          * from uCode or flow handler (Rx/Tx DMA) */
4301         iwl3945_write32(priv, CSR_INT, 0xffffffff);
4302         iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4303         IWL_DEBUG_ISR("Disabled interrupts\n");
4304 }
4305
4306 static const char *desc_lookup(int i)
4307 {
4308         switch (i) {
4309         case 1:
4310                 return "FAIL";
4311         case 2:
4312                 return "BAD_PARAM";
4313         case 3:
4314                 return "BAD_CHECKSUM";
4315         case 4:
4316                 return "NMI_INTERRUPT";
4317         case 5:
4318                 return "SYSASSERT";
4319         case 6:
4320                 return "FATAL_ERROR";
4321         }
4322
4323         return "UNKNOWN";
4324 }
4325
4326 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4327 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4328
4329 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4330 {
4331         u32 i;
4332         u32 desc, time, count, base, data1;
4333         u32 blink1, blink2, ilink1, ilink2;
4334         int rc;
4335
4336         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4337
4338         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4339                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4340                 return;
4341         }
4342
4343         rc = iwl3945_grab_nic_access(priv);
4344         if (rc) {
4345                 IWL_WARNING("Can not read from adapter at this time.\n");
4346                 return;
4347         }
4348
4349         count = iwl3945_read_targ_mem(priv, base);
4350
4351         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4352                 IWL_ERROR("Start IWL Error Log Dump:\n");
4353                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4354         }
4355
4356         IWL_ERROR("Desc       Time       asrtPC  blink2 "
4357                   "ilink1  nmiPC   Line\n");
4358         for (i = ERROR_START_OFFSET;
4359              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4360              i += ERROR_ELEM_SIZE) {
4361                 desc = iwl3945_read_targ_mem(priv, base + i);
4362                 time =
4363                     iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4364                 blink1 =
4365                     iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4366                 blink2 =
4367                     iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4368                 ilink1 =
4369                     iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4370                 ilink2 =
4371                     iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4372                 data1 =
4373                     iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4374
4375                 IWL_ERROR
4376                     ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4377                      desc_lookup(desc), desc, time, blink1, blink2,
4378                      ilink1, ilink2, data1);
4379         }
4380
4381         iwl3945_release_nic_access(priv);
4382
4383 }
4384
4385 #define EVENT_START_OFFSET  (6 * sizeof(u32))
4386
4387 /**
4388  * iwl3945_print_event_log - Dump error event log to syslog
4389  *
4390  * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4391  */
4392 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4393                                 u32 num_events, u32 mode)
4394 {
4395         u32 i;
4396         u32 base;       /* SRAM byte address of event log header */
4397         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4398         u32 ptr;        /* SRAM byte address of log data */
4399         u32 ev, time, data; /* event log data */
4400
4401         if (num_events == 0)
4402                 return;
4403
4404         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4405
4406         if (mode == 0)
4407                 event_size = 2 * sizeof(u32);
4408         else
4409                 event_size = 3 * sizeof(u32);
4410
4411         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4412
4413         /* "time" is actually "data" for mode 0 (no timestamp).
4414          * place event id # at far right for easier visual parsing. */
4415         for (i = 0; i < num_events; i++) {
4416                 ev = iwl3945_read_targ_mem(priv, ptr);
4417                 ptr += sizeof(u32);
4418                 time = iwl3945_read_targ_mem(priv, ptr);
4419                 ptr += sizeof(u32);
4420                 if (mode == 0)
4421                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4422                 else {
4423                         data = iwl3945_read_targ_mem(priv, ptr);
4424                         ptr += sizeof(u32);
4425                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4426                 }
4427         }
4428 }
4429
4430 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4431 {
4432         int rc;
4433         u32 base;       /* SRAM byte address of event log header */
4434         u32 capacity;   /* event log capacity in # entries */
4435         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4436         u32 num_wraps;  /* # times uCode wrapped to top of log */
4437         u32 next_entry; /* index of next entry to be written by uCode */
4438         u32 size;       /* # entries that we'll print */
4439
4440         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4441         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4442                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4443                 return;
4444         }
4445
4446         rc = iwl3945_grab_nic_access(priv);
4447         if (rc) {
4448                 IWL_WARNING("Can not read from adapter at this time.\n");
4449                 return;
4450         }
4451
4452         /* event log header */
4453         capacity = iwl3945_read_targ_mem(priv, base);
4454         mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4455         num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4456         next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4457
4458         size = num_wraps ? capacity : next_entry;
4459
4460         /* bail out if nothing in log */
4461         if (size == 0) {
4462                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4463                 iwl3945_release_nic_access(priv);
4464                 return;
4465         }
4466
4467         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4468                   size, num_wraps);
4469
4470         /* if uCode has wrapped back to top of log, start at the oldest entry,
4471          * i.e the next one that uCode would fill. */
4472         if (num_wraps)
4473                 iwl3945_print_event_log(priv, next_entry,
4474                                     capacity - next_entry, mode);
4475
4476         /* (then/else) start at top of log */
4477         iwl3945_print_event_log(priv, 0, next_entry, mode);
4478
4479         iwl3945_release_nic_access(priv);
4480 }
4481
4482 /**
4483  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4484  */
4485 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4486 {
4487         /* Set the FW error flag -- cleared on iwl3945_down */
4488         set_bit(STATUS_FW_ERROR, &priv->status);
4489
4490         /* Cancel currently queued command. */
4491         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4492
4493 #ifdef CONFIG_IWL3945_DEBUG
4494         if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4495                 iwl3945_dump_nic_error_log(priv);
4496                 iwl3945_dump_nic_event_log(priv);
4497                 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
4498         }
4499 #endif
4500
4501         wake_up_interruptible(&priv->wait_command_queue);
4502
4503         /* Keep the restart process from trying to send host
4504          * commands by clearing the INIT status bit */
4505         clear_bit(STATUS_READY, &priv->status);
4506
4507         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4508                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4509                           "Restarting adapter due to uCode error.\n");
4510
4511                 if (iwl3945_is_associated(priv)) {
4512                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4513                                sizeof(priv->recovery_rxon));
4514                         priv->error_recovering = 1;
4515                 }
4516                 queue_work(priv->workqueue, &priv->restart);
4517         }
4518 }
4519
4520 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4521 {
4522         unsigned long flags;
4523
4524         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4525                sizeof(priv->staging_rxon));
4526         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4527         iwl3945_commit_rxon(priv);
4528
4529         iwl3945_add_station(priv, priv->bssid, 1, 0);
4530
4531         spin_lock_irqsave(&priv->lock, flags);
4532         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4533         priv->error_recovering = 0;
4534         spin_unlock_irqrestore(&priv->lock, flags);
4535 }
4536
4537 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4538 {
4539         u32 inta, handled = 0;
4540         u32 inta_fh;
4541         unsigned long flags;
4542 #ifdef CONFIG_IWL3945_DEBUG
4543         u32 inta_mask;
4544 #endif
4545
4546         spin_lock_irqsave(&priv->lock, flags);
4547
4548         /* Ack/clear/reset pending uCode interrupts.
4549          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4550          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4551         inta = iwl3945_read32(priv, CSR_INT);
4552         iwl3945_write32(priv, CSR_INT, inta);
4553
4554         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4555          * Any new interrupts that happen after this, either while we're
4556          * in this tasklet, or later, will show up in next ISR/tasklet. */
4557         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4558         iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4559
4560 #ifdef CONFIG_IWL3945_DEBUG
4561         if (iwl3945_debug_level & IWL_DL_ISR) {
4562                 /* just for debug */
4563                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4564                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4565                               inta, inta_mask, inta_fh);
4566         }
4567 #endif
4568
4569         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4570          * atomic, make sure that inta covers all the interrupts that
4571          * we've discovered, even if FH interrupt came in just after
4572          * reading CSR_INT. */
4573         if (inta_fh & CSR39_FH_INT_RX_MASK)
4574                 inta |= CSR_INT_BIT_FH_RX;
4575         if (inta_fh & CSR39_FH_INT_TX_MASK)
4576                 inta |= CSR_INT_BIT_FH_TX;
4577
4578         /* Now service all interrupt bits discovered above. */
4579         if (inta & CSR_INT_BIT_HW_ERR) {
4580                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4581
4582                 /* Tell the device to stop sending interrupts */
4583                 iwl3945_disable_interrupts(priv);
4584
4585                 iwl3945_irq_handle_error(priv);
4586
4587                 handled |= CSR_INT_BIT_HW_ERR;
4588
4589                 spin_unlock_irqrestore(&priv->lock, flags);
4590
4591                 return;
4592         }
4593
4594 #ifdef CONFIG_IWL3945_DEBUG
4595         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4596                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4597                 if (inta & CSR_INT_BIT_SCD)
4598                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4599                                       "the frame/frames.\n");
4600
4601                 /* Alive notification via Rx interrupt will do the real work */
4602                 if (inta & CSR_INT_BIT_ALIVE)
4603                         IWL_DEBUG_ISR("Alive interrupt\n");
4604         }
4605 #endif
4606         /* Safely ignore these bits for debug checks below */
4607         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4608
4609         /* HW RF KILL switch toggled (4965 only) */
4610         if (inta & CSR_INT_BIT_RF_KILL) {
4611                 int hw_rf_kill = 0;
4612                 if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
4613                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4614                         hw_rf_kill = 1;
4615
4616                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4617                                 "RF_KILL bit toggled to %s.\n",
4618                                 hw_rf_kill ? "disable radio":"enable radio");
4619
4620                 /* Queue restart only if RF_KILL switch was set to "kill"
4621                  *   when we loaded driver, and is now set to "enable".
4622                  * After we're Alive, RF_KILL gets handled by
4623                  *   iwl3945_rx_card_state_notif() */
4624                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4625                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4626                         queue_work(priv->workqueue, &priv->restart);
4627                 }
4628
4629                 handled |= CSR_INT_BIT_RF_KILL;
4630         }
4631
4632         /* Chip got too hot and stopped itself (4965 only) */
4633         if (inta & CSR_INT_BIT_CT_KILL) {
4634                 IWL_ERROR("Microcode CT kill error detected.\n");
4635                 handled |= CSR_INT_BIT_CT_KILL;
4636         }
4637
4638         /* Error detected by uCode */
4639         if (inta & CSR_INT_BIT_SW_ERR) {
4640                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4641                           inta);
4642                 iwl3945_irq_handle_error(priv);
4643                 handled |= CSR_INT_BIT_SW_ERR;
4644         }
4645
4646         /* uCode wakes up after power-down sleep */
4647         if (inta & CSR_INT_BIT_WAKEUP) {
4648                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4649                 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4650                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4651                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4652                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4653                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4654                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4655                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4656
4657                 handled |= CSR_INT_BIT_WAKEUP;
4658         }
4659
4660         /* All uCode command responses, including Tx command responses,
4661          * Rx "responses" (frame-received notification), and other
4662          * notifications from uCode come through here*/
4663         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4664                 iwl3945_rx_handle(priv);
4665                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4666         }
4667
4668         if (inta & CSR_INT_BIT_FH_TX) {
4669                 IWL_DEBUG_ISR("Tx interrupt\n");
4670
4671                 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4672                 if (!iwl3945_grab_nic_access(priv)) {
4673                         iwl3945_write_direct32(priv,
4674                                              FH_TCSR_CREDIT
4675                                              (ALM_FH_SRVC_CHNL), 0x0);
4676                         iwl3945_release_nic_access(priv);
4677                 }
4678                 handled |= CSR_INT_BIT_FH_TX;
4679         }
4680
4681         if (inta & ~handled)
4682                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4683
4684         if (inta & ~CSR_INI_SET_MASK) {
4685                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4686                          inta & ~CSR_INI_SET_MASK);
4687                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4688         }
4689
4690         /* Re-enable all interrupts */
4691         iwl3945_enable_interrupts(priv);
4692
4693 #ifdef CONFIG_IWL3945_DEBUG
4694         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4695                 inta = iwl3945_read32(priv, CSR_INT);
4696                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4697                 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4698                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4699                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4700         }
4701 #endif
4702         spin_unlock_irqrestore(&priv->lock, flags);
4703 }
4704
4705 static irqreturn_t iwl3945_isr(int irq, void *data)
4706 {
4707         struct iwl3945_priv *priv = data;
4708         u32 inta, inta_mask;
4709         u32 inta_fh;
4710         if (!priv)
4711                 return IRQ_NONE;
4712
4713         spin_lock(&priv->lock);
4714
4715         /* Disable (but don't clear!) interrupts here to avoid
4716          *    back-to-back ISRs and sporadic interrupts from our NIC.
4717          * If we have something to service, the tasklet will re-enable ints.
4718          * If we *don't* have something, we'll re-enable before leaving here. */
4719         inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
4720         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4721
4722         /* Discover which interrupts are active/pending */
4723         inta = iwl3945_read32(priv, CSR_INT);
4724         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4725
4726         /* Ignore interrupt if there's nothing in NIC to service.
4727          * This may be due to IRQ shared with another device,
4728          * or due to sporadic interrupts thrown from our NIC. */
4729         if (!inta && !inta_fh) {
4730                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4731                 goto none;
4732         }
4733
4734         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4735                 /* Hardware disappeared */
4736                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4737                 goto unplugged;
4738         }
4739
4740         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4741                       inta, inta_mask, inta_fh);
4742
4743         inta &= ~CSR_INT_BIT_SCD;
4744
4745         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4746         if (likely(inta || inta_fh))
4747                 tasklet_schedule(&priv->irq_tasklet);
4748 unplugged:
4749         spin_unlock(&priv->lock);
4750
4751         return IRQ_HANDLED;
4752
4753  none:
4754         /* re-enable interrupts here since we don't have anything to service. */
4755         iwl3945_enable_interrupts(priv);
4756         spin_unlock(&priv->lock);
4757         return IRQ_NONE;
4758 }
4759
4760 /************************** EEPROM BANDS ****************************
4761  *
4762  * The iwl3945_eeprom_band definitions below provide the mapping from the
4763  * EEPROM contents to the specific channel number supported for each
4764  * band.
4765  *
4766  * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
4767  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4768  * The specific geography and calibration information for that channel
4769  * is contained in the eeprom map itself.
4770  *
4771  * During init, we copy the eeprom information and channel map
4772  * information into priv->channel_info_24/52 and priv->channel_map_24/52
4773  *
4774  * channel_map_24/52 provides the index in the channel_info array for a
4775  * given channel.  We have to have two separate maps as there is channel
4776  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4777  * band_2
4778  *
4779  * A value of 0xff stored in the channel_map indicates that the channel
4780  * is not supported by the hardware at all.
4781  *
4782  * A value of 0xfe in the channel_map indicates that the channel is not
4783  * valid for Tx with the current hardware.  This means that
4784  * while the system can tune and receive on a given channel, it may not
4785  * be able to associate or transmit any frames on that
4786  * channel.  There is no corresponding channel information for that
4787  * entry.
4788  *
4789  *********************************************************************/
4790
4791 /* 2.4 GHz */
4792 static const u8 iwl3945_eeprom_band_1[14] = {
4793         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4794 };
4795
4796 /* 5.2 GHz bands */
4797 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
4798         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4799 };
4800
4801 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
4802         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4803 };
4804
4805 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
4806         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4807 };
4808
4809 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
4810         145, 149, 153, 157, 161, 165
4811 };
4812
4813 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
4814                                     int *eeprom_ch_count,
4815                                     const struct iwl3945_eeprom_channel
4816                                     **eeprom_ch_info,
4817                                     const u8 **eeprom_ch_index)
4818 {
4819         switch (band) {
4820         case 1:         /* 2.4GHz band */
4821                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4822                 *eeprom_ch_info = priv->eeprom.band_1_channels;
4823                 *eeprom_ch_index = iwl3945_eeprom_band_1;
4824                 break;
4825         case 2:         /* 4.9GHz band */
4826                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4827                 *eeprom_ch_info = priv->eeprom.band_2_channels;
4828                 *eeprom_ch_index = iwl3945_eeprom_band_2;
4829                 break;
4830         case 3:         /* 5.2GHz band */
4831                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4832                 *eeprom_ch_info = priv->eeprom.band_3_channels;
4833                 *eeprom_ch_index = iwl3945_eeprom_band_3;
4834                 break;
4835         case 4:         /* 5.5GHz band */
4836                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4837                 *eeprom_ch_info = priv->eeprom.band_4_channels;
4838                 *eeprom_ch_index = iwl3945_eeprom_band_4;
4839                 break;
4840         case 5:         /* 5.7GHz band */
4841                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4842                 *eeprom_ch_info = priv->eeprom.band_5_channels;
4843                 *eeprom_ch_index = iwl3945_eeprom_band_5;
4844                 break;
4845         default:
4846                 BUG();
4847                 return;
4848         }
4849 }
4850
4851 /**
4852  * iwl3945_get_channel_info - Find driver's private channel info
4853  *
4854  * Based on band and channel number.
4855  */
4856 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4857                                                     enum ieee80211_band band, u16 channel)
4858 {
4859         int i;
4860
4861         switch (band) {
4862         case IEEE80211_BAND_5GHZ:
4863                 for (i = 14; i < priv->channel_count; i++) {
4864                         if (priv->channel_info[i].channel == channel)
4865                                 return &priv->channel_info[i];
4866                 }
4867                 break;
4868
4869         case IEEE80211_BAND_2GHZ:
4870                 if (channel >= 1 && channel <= 14)
4871                         return &priv->channel_info[channel - 1];
4872                 break;
4873         case IEEE80211_NUM_BANDS:
4874                 WARN_ON(1);
4875         }
4876
4877         return NULL;
4878 }
4879
4880 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4881                             ? # x " " : "")
4882
4883 /**
4884  * iwl3945_init_channel_map - Set up driver's info for all possible channels
4885  */
4886 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
4887 {
4888         int eeprom_ch_count = 0;
4889         const u8 *eeprom_ch_index = NULL;
4890         const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
4891         int band, ch;
4892         struct iwl3945_channel_info *ch_info;
4893
4894         if (priv->channel_count) {
4895                 IWL_DEBUG_INFO("Channel map already initialized.\n");
4896                 return 0;
4897         }
4898
4899         if (priv->eeprom.version < 0x2f) {
4900                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
4901                             priv->eeprom.version);
4902                 return -EINVAL;
4903         }
4904
4905         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4906
4907         priv->channel_count =
4908             ARRAY_SIZE(iwl3945_eeprom_band_1) +
4909             ARRAY_SIZE(iwl3945_eeprom_band_2) +
4910             ARRAY_SIZE(iwl3945_eeprom_band_3) +
4911             ARRAY_SIZE(iwl3945_eeprom_band_4) +
4912             ARRAY_SIZE(iwl3945_eeprom_band_5);
4913
4914         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4915
4916         priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
4917                                      priv->channel_count, GFP_KERNEL);
4918         if (!priv->channel_info) {
4919                 IWL_ERROR("Could not allocate channel_info\n");
4920                 priv->channel_count = 0;
4921                 return -ENOMEM;
4922         }
4923
4924         ch_info = priv->channel_info;
4925
4926         /* Loop through the 5 EEPROM bands adding them in order to the
4927          * channel map we maintain (that contains additional information than
4928          * what just in the EEPROM) */
4929         for (band = 1; band <= 5; band++) {
4930
4931                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4932                                         &eeprom_ch_info, &eeprom_ch_index);
4933
4934                 /* Loop through each band adding each of the channels */
4935                 for (ch = 0; ch < eeprom_ch_count; ch++) {
4936                         ch_info->channel = eeprom_ch_index[ch];
4937                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4938                             IEEE80211_BAND_5GHZ;
4939
4940                         /* permanently store EEPROM's channel regulatory flags
4941                          *   and max power in channel info database. */
4942                         ch_info->eeprom = eeprom_ch_info[ch];
4943
4944                         /* Copy the run-time flags so they are there even on
4945                          * invalid channels */
4946                         ch_info->flags = eeprom_ch_info[ch].flags;
4947
4948                         if (!(is_channel_valid(ch_info))) {
4949                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4950                                                "No traffic\n",
4951                                                ch_info->channel,
4952                                                ch_info->flags,
4953                                                is_channel_a_band(ch_info) ?
4954                                                "5.2" : "2.4");
4955                                 ch_info++;
4956                                 continue;
4957                         }
4958
4959                         /* Initialize regulatory-based run-time data */
4960                         ch_info->max_power_avg = ch_info->curr_txpow =
4961                             eeprom_ch_info[ch].max_power_avg;
4962                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4963                         ch_info->min_power = 0;
4964
4965                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s%s(0x%02x"
4966                                        " %ddBm): Ad-Hoc %ssupported\n",
4967                                        ch_info->channel,
4968                                        is_channel_a_band(ch_info) ?
4969                                        "5.2" : "2.4",
4970                                        CHECK_AND_PRINT(VALID),
4971                                        CHECK_AND_PRINT(IBSS),
4972                                        CHECK_AND_PRINT(ACTIVE),
4973                                        CHECK_AND_PRINT(RADAR),
4974                                        CHECK_AND_PRINT(WIDE),
4975                                        CHECK_AND_PRINT(NARROW),
4976                                        CHECK_AND_PRINT(DFS),
4977                                        eeprom_ch_info[ch].flags,
4978                                        eeprom_ch_info[ch].max_power_avg,
4979                                        ((eeprom_ch_info[ch].
4980                                          flags & EEPROM_CHANNEL_IBSS)
4981                                         && !(eeprom_ch_info[ch].
4982                                              flags & EEPROM_CHANNEL_RADAR))
4983                                        ? "" : "not ");
4984
4985                         /* Set the user_txpower_limit to the highest power
4986                          * supported by any channel */
4987                         if (eeprom_ch_info[ch].max_power_avg >
4988                             priv->user_txpower_limit)
4989                                 priv->user_txpower_limit =
4990                                     eeprom_ch_info[ch].max_power_avg;
4991
4992                         ch_info++;
4993                 }
4994         }
4995
4996         /* Set up txpower settings in driver for all channels */
4997         if (iwl3945_txpower_set_from_eeprom(priv))
4998                 return -EIO;
4999
5000         return 0;
5001 }
5002
5003 /*
5004  * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
5005  */
5006 static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
5007 {
5008         kfree(priv->channel_info);
5009         priv->channel_count = 0;
5010 }
5011
5012 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5013  * sending probe req.  This should be set long enough to hear probe responses
5014  * from more than one AP.  */
5015 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5016 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5017
5018 /* For faster active scanning, scan will move to the next channel if fewer than
5019  * PLCP_QUIET_THRESH packets are heard on this channel within
5020  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5021  * time if it's a quiet channel (nothing responded to our probe, and there's
5022  * no other traffic).
5023  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5024 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5025 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5026
5027 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5028  * Must be set longer than active dwell time.
5029  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5030 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5031 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5032 #define IWL_PASSIVE_DWELL_BASE      (100)
5033 #define IWL_CHANNEL_TUNE_TIME       5
5034
5035 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
5036                                                 enum ieee80211_band band)
5037 {
5038         if (band == IEEE80211_BAND_5GHZ)
5039                 return IWL_ACTIVE_DWELL_TIME_52;
5040         else
5041                 return IWL_ACTIVE_DWELL_TIME_24;
5042 }
5043
5044 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
5045                                           enum ieee80211_band band)
5046 {
5047         u16 active = iwl3945_get_active_dwell_time(priv, band);
5048         u16 passive = (band == IEEE80211_BAND_2GHZ) ?
5049             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5050             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5051
5052         if (iwl3945_is_associated(priv)) {
5053                 /* If we're associated, we clamp the maximum passive
5054                  * dwell time to be 98% of the beacon interval (minus
5055                  * 2 * channel tune time) */
5056                 passive = priv->beacon_int;
5057                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5058                         passive = IWL_PASSIVE_DWELL_BASE;
5059                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5060         }
5061
5062         if (passive <= active)
5063                 passive = active + 1;
5064
5065         return passive;
5066 }
5067
5068 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
5069                                          enum ieee80211_band band,
5070                                      u8 is_active, u8 direct_mask,
5071                                      struct iwl3945_scan_channel *scan_ch)
5072 {
5073         const struct ieee80211_channel *channels = NULL;
5074         const struct ieee80211_supported_band *sband;
5075         const struct iwl3945_channel_info *ch_info;
5076         u16 passive_dwell = 0;
5077         u16 active_dwell = 0;
5078         int added, i;
5079
5080         sband = iwl3945_get_band(priv, band);
5081         if (!sband)
5082                 return 0;
5083
5084         channels = sband->channels;
5085
5086         active_dwell = iwl3945_get_active_dwell_time(priv, band);
5087         passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
5088
5089         for (i = 0, added = 0; i < sband->n_channels; i++) {
5090                 if (channels[i].hw_value ==
5091                     le16_to_cpu(priv->active_rxon.channel)) {
5092                         if (iwl3945_is_associated(priv)) {
5093                                 IWL_DEBUG_SCAN
5094                                     ("Skipping current channel %d\n",
5095                                      le16_to_cpu(priv->active_rxon.channel));
5096                                 continue;
5097                         }
5098                 } else if (priv->only_active_channel)
5099                         continue;
5100
5101                 scan_ch->channel = channels[i].hw_value;
5102
5103                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
5104                 if (!is_channel_valid(ch_info)) {
5105                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5106                                        scan_ch->channel);
5107                         continue;
5108                 }
5109
5110                 if (!is_active || is_channel_passive(ch_info) ||
5111                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
5112                         scan_ch->type = 0;      /* passive */
5113                 else
5114                         scan_ch->type = 1;      /* active */
5115
5116                 if (scan_ch->type & 1)
5117                         scan_ch->type |= (direct_mask << 1);
5118
5119                 if (is_channel_narrow(ch_info))
5120                         scan_ch->type |= (1 << 7);
5121
5122                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5123                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5124
5125                 /* Set txpower levels to defaults */
5126                 scan_ch->tpc.dsp_atten = 110;
5127                 /* scan_pwr_info->tpc.dsp_atten; */
5128
5129                 /*scan_pwr_info->tpc.tx_gain; */
5130                 if (band == IEEE80211_BAND_5GHZ)
5131                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5132                 else {
5133                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5134                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5135                          * power level:
5136                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5137                          */
5138                 }
5139
5140                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5141                                scan_ch->channel,
5142                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5143                                (scan_ch->type & 1) ?
5144                                active_dwell : passive_dwell);
5145
5146                 scan_ch++;
5147                 added++;
5148         }
5149
5150         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5151         return added;
5152 }
5153
5154 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
5155                               struct ieee80211_rate *rates)
5156 {
5157         int i;
5158
5159         for (i = 0; i < IWL_RATE_COUNT; i++) {
5160                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
5161                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5162                 rates[i].hw_value_short = i;
5163                 rates[i].flags = 0;
5164                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5165                         /*
5166                          * If CCK != 1M then set short preamble rate flag.
5167                          */
5168                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5169                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5170                 }
5171         }
5172 }
5173
5174 /**
5175  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
5176  */
5177 static int iwl3945_init_geos(struct iwl3945_priv *priv)
5178 {
5179         struct iwl3945_channel_info *ch;
5180         struct ieee80211_supported_band *sband;
5181         struct ieee80211_channel *channels;
5182         struct ieee80211_channel *geo_ch;
5183         struct ieee80211_rate *rates;
5184         int i = 0;
5185
5186         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5187             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5188                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5189                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5190                 return 0;
5191         }
5192
5193         channels = kzalloc(sizeof(struct ieee80211_channel) *
5194                            priv->channel_count, GFP_KERNEL);
5195         if (!channels)
5196                 return -ENOMEM;
5197
5198         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5199                         GFP_KERNEL);
5200         if (!rates) {
5201                 kfree(channels);
5202                 return -ENOMEM;
5203         }
5204
5205         /* 5.2GHz channels start after the 2.4GHz channels */
5206         sband = &priv->bands[IEEE80211_BAND_5GHZ];
5207         sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
5208         /* just OFDM */
5209         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5210         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5211
5212         sband = &priv->bands[IEEE80211_BAND_2GHZ];
5213         sband->channels = channels;
5214         /* OFDM & CCK */
5215         sband->bitrates = rates;
5216         sband->n_bitrates = IWL_RATE_COUNT;
5217
5218         priv->ieee_channels = channels;
5219         priv->ieee_rates = rates;
5220
5221         iwl3945_init_hw_rates(priv, rates);
5222
5223         for (i = 0;  i < priv->channel_count; i++) {
5224                 ch = &priv->channel_info[i];
5225
5226                 /* FIXME: might be removed if scan is OK*/
5227                 if (!is_channel_valid(ch))
5228                         continue;
5229
5230                 if (is_channel_a_band(ch))
5231                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
5232                 else
5233                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
5234
5235                 geo_ch = &sband->channels[sband->n_channels++];
5236
5237                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5238                 geo_ch->max_power = ch->max_power_avg;
5239                 geo_ch->max_antenna_gain = 0xff;
5240                 geo_ch->hw_value = ch->channel;
5241
5242                 if (is_channel_valid(ch)) {
5243                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5244                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5245
5246                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5247                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5248
5249                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5250                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5251
5252                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5253                                 priv->max_channel_txpower_limit =
5254                                     ch->max_power_avg;
5255                 } else {
5256                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5257                 }
5258
5259                 /* Save flags for reg domain usage */
5260                 geo_ch->orig_flags = geo_ch->flags;
5261
5262                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5263                                 ch->channel, geo_ch->center_freq,
5264                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
5265                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5266                                 "restricted" : "valid",
5267                                  geo_ch->flags);
5268         }
5269
5270         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && priv->is_abg) {
5271                 printk(KERN_INFO DRV_NAME
5272                        ": Incorrectly detected BG card as ABG.  Please send "
5273                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5274                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5275                 priv->is_abg = 0;
5276         }
5277
5278         printk(KERN_INFO DRV_NAME
5279                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5280                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5281                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5282
5283         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5284         priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5285
5286         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5287
5288         return 0;
5289 }
5290
5291 /*
5292  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
5293  */
5294 static void iwl3945_free_geos(struct iwl3945_priv *priv)
5295 {
5296         kfree(priv->ieee_channels);
5297         kfree(priv->ieee_rates);
5298         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5299 }
5300
5301 /******************************************************************************
5302  *
5303  * uCode download functions
5304  *
5305  ******************************************************************************/
5306
5307 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
5308 {
5309         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5310         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5311         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5312         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5313         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5314         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5315 }
5316
5317 /**
5318  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5319  *     looking at all data.
5320  */
5321 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
5322 {
5323         u32 val;
5324         u32 save_len = len;
5325         int rc = 0;
5326         u32 errcnt;
5327
5328         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5329
5330         rc = iwl3945_grab_nic_access(priv);
5331         if (rc)
5332                 return rc;
5333
5334         iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5335
5336         errcnt = 0;
5337         for (; len > 0; len -= sizeof(u32), image++) {
5338                 /* read data comes through single port, auto-incr addr */
5339                 /* NOTE: Use the debugless read so we don't flood kernel log
5340                  * if IWL_DL_IO is set */
5341                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5342                 if (val != le32_to_cpu(*image)) {
5343                         IWL_ERROR("uCode INST section is invalid at "
5344                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5345                                   save_len - len, val, le32_to_cpu(*image));
5346                         rc = -EIO;
5347                         errcnt++;
5348                         if (errcnt >= 20)
5349                                 break;
5350                 }
5351         }
5352
5353         iwl3945_release_nic_access(priv);
5354
5355         if (!errcnt)
5356                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5357
5358         return rc;
5359 }
5360
5361
5362 /**
5363  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5364  *   using sample data 100 bytes apart.  If these sample points are good,
5365  *   it's a pretty good bet that everything between them is good, too.
5366  */
5367 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5368 {
5369         u32 val;
5370         int rc = 0;
5371         u32 errcnt = 0;
5372         u32 i;
5373
5374         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5375
5376         rc = iwl3945_grab_nic_access(priv);
5377         if (rc)
5378                 return rc;
5379
5380         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5381                 /* read data comes through single port, auto-incr addr */
5382                 /* NOTE: Use the debugless read so we don't flood kernel log
5383                  * if IWL_DL_IO is set */
5384                 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5385                         i + RTC_INST_LOWER_BOUND);
5386                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5387                 if (val != le32_to_cpu(*image)) {
5388 #if 0 /* Enable this if you want to see details */
5389                         IWL_ERROR("uCode INST section is invalid at "
5390                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5391                                   i, val, *image);
5392 #endif
5393                         rc = -EIO;
5394                         errcnt++;
5395                         if (errcnt >= 3)
5396                                 break;
5397                 }
5398         }
5399
5400         iwl3945_release_nic_access(priv);
5401
5402         return rc;
5403 }
5404
5405
5406 /**
5407  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5408  *    and verify its contents
5409  */
5410 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5411 {
5412         __le32 *image;
5413         u32 len;
5414         int rc = 0;
5415
5416         /* Try bootstrap */
5417         image = (__le32 *)priv->ucode_boot.v_addr;
5418         len = priv->ucode_boot.len;
5419         rc = iwl3945_verify_inst_sparse(priv, image, len);
5420         if (rc == 0) {
5421                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5422                 return 0;
5423         }
5424
5425         /* Try initialize */
5426         image = (__le32 *)priv->ucode_init.v_addr;
5427         len = priv->ucode_init.len;
5428         rc = iwl3945_verify_inst_sparse(priv, image, len);
5429         if (rc == 0) {
5430                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5431                 return 0;
5432         }
5433
5434         /* Try runtime/protocol */
5435         image = (__le32 *)priv->ucode_code.v_addr;
5436         len = priv->ucode_code.len;
5437         rc = iwl3945_verify_inst_sparse(priv, image, len);
5438         if (rc == 0) {
5439                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5440                 return 0;
5441         }
5442
5443         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5444
5445         /* Since nothing seems to match, show first several data entries in
5446          * instruction SRAM, so maybe visual inspection will give a clue.
5447          * Selection of bootstrap image (vs. other images) is arbitrary. */
5448         image = (__le32 *)priv->ucode_boot.v_addr;
5449         len = priv->ucode_boot.len;
5450         rc = iwl3945_verify_inst_full(priv, image, len);
5451
5452         return rc;
5453 }
5454
5455
5456 /* check contents of special bootstrap uCode SRAM */
5457 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5458 {
5459         __le32 *image = priv->ucode_boot.v_addr;
5460         u32 len = priv->ucode_boot.len;
5461         u32 reg;
5462         u32 val;
5463
5464         IWL_DEBUG_INFO("Begin verify bsm\n");
5465
5466         /* verify BSM SRAM contents */
5467         val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5468         for (reg = BSM_SRAM_LOWER_BOUND;
5469              reg < BSM_SRAM_LOWER_BOUND + len;
5470              reg += sizeof(u32), image ++) {
5471                 val = iwl3945_read_prph(priv, reg);
5472                 if (val != le32_to_cpu(*image)) {
5473                         IWL_ERROR("BSM uCode verification failed at "
5474                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5475                                   BSM_SRAM_LOWER_BOUND,
5476                                   reg - BSM_SRAM_LOWER_BOUND, len,
5477                                   val, le32_to_cpu(*image));
5478                         return -EIO;
5479                 }
5480         }
5481
5482         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5483
5484         return 0;
5485 }
5486
5487 /**
5488  * iwl3945_load_bsm - Load bootstrap instructions
5489  *
5490  * BSM operation:
5491  *
5492  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5493  * in special SRAM that does not power down during RFKILL.  When powering back
5494  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5495  * the bootstrap program into the on-board processor, and starts it.
5496  *
5497  * The bootstrap program loads (via DMA) instructions and data for a new
5498  * program from host DRAM locations indicated by the host driver in the
5499  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5500  * automatically.
5501  *
5502  * When initializing the NIC, the host driver points the BSM to the
5503  * "initialize" uCode image.  This uCode sets up some internal data, then
5504  * notifies host via "initialize alive" that it is complete.
5505  *
5506  * The host then replaces the BSM_DRAM_* pointer values to point to the
5507  * normal runtime uCode instructions and a backup uCode data cache buffer
5508  * (filled initially with starting data values for the on-board processor),
5509  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5510  * which begins normal operation.
5511  *
5512  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5513  * the backup data cache in DRAM before SRAM is powered down.
5514  *
5515  * When powering back up, the BSM loads the bootstrap program.  This reloads
5516  * the runtime uCode instructions and the backup data cache into SRAM,
5517  * and re-launches the runtime uCode from where it left off.
5518  */
5519 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5520 {
5521         __le32 *image = priv->ucode_boot.v_addr;
5522         u32 len = priv->ucode_boot.len;
5523         dma_addr_t pinst;
5524         dma_addr_t pdata;
5525         u32 inst_len;
5526         u32 data_len;
5527         int rc;
5528         int i;
5529         u32 done;
5530         u32 reg_offset;
5531
5532         IWL_DEBUG_INFO("Begin load bsm\n");
5533
5534         /* make sure bootstrap program is no larger than BSM's SRAM size */
5535         if (len > IWL_MAX_BSM_SIZE)
5536                 return -EINVAL;
5537
5538         /* Tell bootstrap uCode where to find the "Initialize" uCode
5539          *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5540          * NOTE:  iwl3945_initialize_alive_start() will replace these values,
5541          *        after the "initialize" uCode has run, to point to
5542          *        runtime/protocol instructions and backup data cache. */
5543         pinst = priv->ucode_init.p_addr;
5544         pdata = priv->ucode_init_data.p_addr;
5545         inst_len = priv->ucode_init.len;
5546         data_len = priv->ucode_init_data.len;
5547
5548         rc = iwl3945_grab_nic_access(priv);
5549         if (rc)
5550                 return rc;
5551
5552         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5553         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5554         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5555         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5556
5557         /* Fill BSM memory with bootstrap instructions */
5558         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5559              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5560              reg_offset += sizeof(u32), image++)
5561                 _iwl3945_write_prph(priv, reg_offset,
5562                                           le32_to_cpu(*image));
5563
5564         rc = iwl3945_verify_bsm(priv);
5565         if (rc) {
5566                 iwl3945_release_nic_access(priv);
5567                 return rc;
5568         }
5569
5570         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5571         iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5572         iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5573                                  RTC_INST_LOWER_BOUND);
5574         iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5575
5576         /* Load bootstrap code into instruction SRAM now,
5577          *   to prepare to load "initialize" uCode */
5578         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5579                 BSM_WR_CTRL_REG_BIT_START);
5580
5581         /* Wait for load of bootstrap uCode to finish */
5582         for (i = 0; i < 100; i++) {
5583                 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5584                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5585                         break;
5586                 udelay(10);
5587         }
5588         if (i < 100)
5589                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5590         else {
5591                 IWL_ERROR("BSM write did not complete!\n");
5592                 return -EIO;
5593         }
5594
5595         /* Enable future boot loads whenever power management unit triggers it
5596          *   (e.g. when powering back up after power-save shutdown) */
5597         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5598                 BSM_WR_CTRL_REG_BIT_START_EN);
5599
5600         iwl3945_release_nic_access(priv);
5601
5602         return 0;
5603 }
5604
5605 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5606 {
5607         /* Remove all resets to allow NIC to operate */
5608         iwl3945_write32(priv, CSR_RESET, 0);
5609 }
5610
5611 /**
5612  * iwl3945_read_ucode - Read uCode images from disk file.
5613  *
5614  * Copy into buffers for card to fetch via bus-mastering
5615  */
5616 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5617 {
5618         struct iwl3945_ucode *ucode;
5619         int ret = 0;
5620         const struct firmware *ucode_raw;
5621         /* firmware file name contains uCode/driver compatibility version */
5622         const char *name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode";
5623         u8 *src;
5624         size_t len;
5625         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5626
5627         /* Ask kernel firmware_class module to get the boot firmware off disk.
5628          * request_firmware() is synchronous, file is in memory on return. */
5629         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5630         if (ret < 0) {
5631                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5632                                 name, ret);
5633                 goto error;
5634         }
5635
5636         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5637                        name, ucode_raw->size);
5638
5639         /* Make sure that we got at least our header! */
5640         if (ucode_raw->size < sizeof(*ucode)) {
5641                 IWL_ERROR("File size way too small!\n");
5642                 ret = -EINVAL;
5643                 goto err_release;
5644         }
5645
5646         /* Data from ucode file:  header followed by uCode images */
5647         ucode = (void *)ucode_raw->data;
5648
5649         ver = le32_to_cpu(ucode->ver);
5650         inst_size = le32_to_cpu(ucode->inst_size);
5651         data_size = le32_to_cpu(ucode->data_size);
5652         init_size = le32_to_cpu(ucode->init_size);
5653         init_data_size = le32_to_cpu(ucode->init_data_size);
5654         boot_size = le32_to_cpu(ucode->boot_size);
5655
5656         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5657         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5658         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5659         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5660         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5661         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5662
5663         /* Verify size of file vs. image size info in file's header */
5664         if (ucode_raw->size < sizeof(*ucode) +
5665                 inst_size + data_size + init_size +
5666                 init_data_size + boot_size) {
5667
5668                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5669                                (int)ucode_raw->size);
5670                 ret = -EINVAL;
5671                 goto err_release;
5672         }
5673
5674         /* Verify that uCode images will fit in card's SRAM */
5675         if (inst_size > IWL_MAX_INST_SIZE) {
5676                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5677                                inst_size);
5678                 ret = -EINVAL;
5679                 goto err_release;
5680         }
5681
5682         if (data_size > IWL_MAX_DATA_SIZE) {
5683                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5684                                data_size);
5685                 ret = -EINVAL;
5686                 goto err_release;
5687         }
5688         if (init_size > IWL_MAX_INST_SIZE) {
5689                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5690                                 init_size);
5691                 ret = -EINVAL;
5692                 goto err_release;
5693         }
5694         if (init_data_size > IWL_MAX_DATA_SIZE) {
5695                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5696                                 init_data_size);
5697                 ret = -EINVAL;
5698                 goto err_release;
5699         }
5700         if (boot_size > IWL_MAX_BSM_SIZE) {
5701                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5702                                 boot_size);
5703                 ret = -EINVAL;
5704                 goto err_release;
5705         }
5706
5707         /* Allocate ucode buffers for card's bus-master loading ... */
5708
5709         /* Runtime instructions and 2 copies of data:
5710          * 1) unmodified from disk
5711          * 2) backup cache for save/restore during power-downs */
5712         priv->ucode_code.len = inst_size;
5713         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5714
5715         priv->ucode_data.len = data_size;
5716         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5717
5718         priv->ucode_data_backup.len = data_size;
5719         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5720
5721         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5722             !priv->ucode_data_backup.v_addr)
5723                 goto err_pci_alloc;
5724
5725         /* Initialization instructions and data */
5726         if (init_size && init_data_size) {
5727                 priv->ucode_init.len = init_size;
5728                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5729
5730                 priv->ucode_init_data.len = init_data_size;
5731                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5732
5733                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5734                         goto err_pci_alloc;
5735         }
5736
5737         /* Bootstrap (instructions only, no data) */
5738         if (boot_size) {
5739                 priv->ucode_boot.len = boot_size;
5740                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5741
5742                 if (!priv->ucode_boot.v_addr)
5743                         goto err_pci_alloc;
5744         }
5745
5746         /* Copy images into buffers for card's bus-master reads ... */
5747
5748         /* Runtime instructions (first block of data in file) */
5749         src = &ucode->data[0];
5750         len = priv->ucode_code.len;
5751         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5752         memcpy(priv->ucode_code.v_addr, src, len);
5753         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5754                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5755
5756         /* Runtime data (2nd block)
5757          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
5758         src = &ucode->data[inst_size];
5759         len = priv->ucode_data.len;
5760         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5761         memcpy(priv->ucode_data.v_addr, src, len);
5762         memcpy(priv->ucode_data_backup.v_addr, src, len);
5763
5764         /* Initialization instructions (3rd block) */
5765         if (init_size) {
5766                 src = &ucode->data[inst_size + data_size];
5767                 len = priv->ucode_init.len;
5768                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5769                                len);
5770                 memcpy(priv->ucode_init.v_addr, src, len);
5771         }
5772
5773         /* Initialization data (4th block) */
5774         if (init_data_size) {
5775                 src = &ucode->data[inst_size + data_size + init_size];
5776                 len = priv->ucode_init_data.len;
5777                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5778                                (int)len);
5779                 memcpy(priv->ucode_init_data.v_addr, src, len);
5780         }
5781
5782         /* Bootstrap instructions (5th block) */
5783         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5784         len = priv->ucode_boot.len;
5785         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5786                        (int)len);
5787         memcpy(priv->ucode_boot.v_addr, src, len);
5788
5789         /* We have our copies now, allow OS release its copies */
5790         release_firmware(ucode_raw);
5791         return 0;
5792
5793  err_pci_alloc:
5794         IWL_ERROR("failed to allocate pci memory\n");
5795         ret = -ENOMEM;
5796         iwl3945_dealloc_ucode_pci(priv);
5797
5798  err_release:
5799         release_firmware(ucode_raw);
5800
5801  error:
5802         return ret;
5803 }
5804
5805
5806 /**
5807  * iwl3945_set_ucode_ptrs - Set uCode address location
5808  *
5809  * Tell initialization uCode where to find runtime uCode.
5810  *
5811  * BSM registers initially contain pointers to initialization uCode.
5812  * We need to replace them to load runtime uCode inst and data,
5813  * and to save runtime data when powering down.
5814  */
5815 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
5816 {
5817         dma_addr_t pinst;
5818         dma_addr_t pdata;
5819         int rc = 0;
5820         unsigned long flags;
5821
5822         /* bits 31:0 for 3945 */
5823         pinst = priv->ucode_code.p_addr;
5824         pdata = priv->ucode_data_backup.p_addr;
5825
5826         spin_lock_irqsave(&priv->lock, flags);
5827         rc = iwl3945_grab_nic_access(priv);
5828         if (rc) {
5829                 spin_unlock_irqrestore(&priv->lock, flags);
5830                 return rc;
5831         }
5832
5833         /* Tell bootstrap uCode where to find image to load */
5834         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5835         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5836         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5837                                  priv->ucode_data.len);
5838
5839         /* Inst bytecount must be last to set up, bit 31 signals uCode
5840          *   that all new ptr/size info is in place */
5841         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5842                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5843
5844         iwl3945_release_nic_access(priv);
5845
5846         spin_unlock_irqrestore(&priv->lock, flags);
5847
5848         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5849
5850         return rc;
5851 }
5852
5853 /**
5854  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5855  *
5856  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5857  *
5858  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5859  */
5860 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
5861 {
5862         /* Check alive response for "valid" sign from uCode */
5863         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5864                 /* We had an error bringing up the hardware, so take it
5865                  * all the way back down so we can try again */
5866                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5867                 goto restart;
5868         }
5869
5870         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5871          * This is a paranoid check, because we would not have gotten the
5872          * "initialize" alive if code weren't properly loaded.  */
5873         if (iwl3945_verify_ucode(priv)) {
5874                 /* Runtime instruction load was bad;
5875                  * take it all the way back down so we can try again */
5876                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5877                 goto restart;
5878         }
5879
5880         /* Send pointers to protocol/runtime uCode image ... init code will
5881          * load and launch runtime uCode, which will send us another "Alive"
5882          * notification. */
5883         IWL_DEBUG_INFO("Initialization Alive received.\n");
5884         if (iwl3945_set_ucode_ptrs(priv)) {
5885                 /* Runtime instruction load won't happen;
5886                  * take it all the way back down so we can try again */
5887                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5888                 goto restart;
5889         }
5890         return;
5891
5892  restart:
5893         queue_work(priv->workqueue, &priv->restart);
5894 }
5895
5896
5897 /**
5898  * iwl3945_alive_start - called after REPLY_ALIVE notification received
5899  *                   from protocol/runtime uCode (initialization uCode's
5900  *                   Alive gets handled by iwl3945_init_alive_start()).
5901  */
5902 static void iwl3945_alive_start(struct iwl3945_priv *priv)
5903 {
5904         int rc = 0;
5905         int thermal_spin = 0;
5906         u32 rfkill;
5907
5908         IWL_DEBUG_INFO("Runtime Alive received.\n");
5909
5910         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5911                 /* We had an error bringing up the hardware, so take it
5912                  * all the way back down so we can try again */
5913                 IWL_DEBUG_INFO("Alive failed.\n");
5914                 goto restart;
5915         }
5916
5917         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5918          * This is a paranoid check, because we would not have gotten the
5919          * "runtime" alive if code weren't properly loaded.  */
5920         if (iwl3945_verify_ucode(priv)) {
5921                 /* Runtime instruction load was bad;
5922                  * take it all the way back down so we can try again */
5923                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5924                 goto restart;
5925         }
5926
5927         iwl3945_clear_stations_table(priv);
5928
5929         rc = iwl3945_grab_nic_access(priv);
5930         if (rc) {
5931                 IWL_WARNING("Can not read rfkill status from adapter\n");
5932                 return;
5933         }
5934
5935         rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
5936         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5937         iwl3945_release_nic_access(priv);
5938
5939         if (rfkill & 0x1) {
5940                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5941                 /* if rfkill is not on, then wait for thermal
5942                  * sensor in adapter to kick in */
5943                 while (iwl3945_hw_get_temperature(priv) == 0) {
5944                         thermal_spin++;
5945                         udelay(10);
5946                 }
5947
5948                 if (thermal_spin)
5949                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5950                                        thermal_spin * 10);
5951         } else
5952                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5953
5954         /* After the ALIVE response, we can send commands to 3945 uCode */
5955         set_bit(STATUS_ALIVE, &priv->status);
5956
5957         /* Clear out the uCode error bit if it is set */
5958         clear_bit(STATUS_FW_ERROR, &priv->status);
5959
5960         if (iwl3945_is_rfkill(priv))
5961                 return;
5962
5963         ieee80211_start_queues(priv->hw);
5964
5965         priv->active_rate = priv->rates_mask;
5966         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5967
5968         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5969
5970         if (iwl3945_is_associated(priv)) {
5971                 struct iwl3945_rxon_cmd *active_rxon =
5972                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
5973
5974                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5975                        sizeof(priv->staging_rxon));
5976                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5977         } else {
5978                 /* Initialize our rx_config data */
5979                 iwl3945_connection_init_rx_config(priv);
5980                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5981         }
5982
5983         /* Configure Bluetooth device coexistence support */
5984         iwl3945_send_bt_config(priv);
5985
5986         /* Configure the adapter for unassociated operation */
5987         iwl3945_commit_rxon(priv);
5988
5989         /* At this point, the NIC is initialized and operational */
5990         priv->notif_missed_beacons = 0;
5991         set_bit(STATUS_READY, &priv->status);
5992
5993         iwl3945_reg_txpower_periodic(priv);
5994
5995         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5996         wake_up_interruptible(&priv->wait_command_queue);
5997
5998         if (priv->error_recovering)
5999                 iwl3945_error_recovery(priv);
6000
6001         return;
6002
6003  restart:
6004         queue_work(priv->workqueue, &priv->restart);
6005 }
6006
6007 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
6008
6009 static void __iwl3945_down(struct iwl3945_priv *priv)
6010 {
6011         unsigned long flags;
6012         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6013         struct ieee80211_conf *conf = NULL;
6014
6015         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6016
6017         conf = ieee80211_get_hw_conf(priv->hw);
6018
6019         if (!exit_pending)
6020                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6021
6022         iwl3945_clear_stations_table(priv);
6023
6024         /* Unblock any waiting calls */
6025         wake_up_interruptible_all(&priv->wait_command_queue);
6026
6027         /* Wipe out the EXIT_PENDING status bit if we are not actually
6028          * exiting the module */
6029         if (!exit_pending)
6030                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6031
6032         /* stop and reset the on-board processor */
6033         iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6034
6035         /* tell the device to stop sending interrupts */
6036         iwl3945_disable_interrupts(priv);
6037
6038         if (priv->mac80211_registered)
6039                 ieee80211_stop_queues(priv->hw);
6040
6041         /* If we have not previously called iwl3945_init() then
6042          * clear all bits but the RF Kill and SUSPEND bits and return */
6043         if (!iwl3945_is_init(priv)) {
6044                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6045                                         STATUS_RF_KILL_HW |
6046                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6047                                         STATUS_RF_KILL_SW |
6048                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6049                                         STATUS_GEO_CONFIGURED |
6050                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6051                                         STATUS_IN_SUSPEND;
6052                 goto exit;
6053         }
6054
6055         /* ...otherwise clear out all the status bits but the RF Kill and
6056          * SUSPEND bits and continue taking the NIC down. */
6057         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6058                                 STATUS_RF_KILL_HW |
6059                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6060                                 STATUS_RF_KILL_SW |
6061                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6062                                 STATUS_GEO_CONFIGURED |
6063                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6064                                 STATUS_IN_SUSPEND |
6065                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6066                                 STATUS_FW_ERROR;
6067
6068         spin_lock_irqsave(&priv->lock, flags);
6069         iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6070         spin_unlock_irqrestore(&priv->lock, flags);
6071
6072         iwl3945_hw_txq_ctx_stop(priv);
6073         iwl3945_hw_rxq_stop(priv);
6074
6075         spin_lock_irqsave(&priv->lock, flags);
6076         if (!iwl3945_grab_nic_access(priv)) {
6077                 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
6078                                          APMG_CLK_VAL_DMA_CLK_RQT);
6079                 iwl3945_release_nic_access(priv);
6080         }
6081         spin_unlock_irqrestore(&priv->lock, flags);
6082
6083         udelay(5);
6084
6085         iwl3945_hw_nic_stop_master(priv);
6086         iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6087         iwl3945_hw_nic_reset(priv);
6088
6089  exit:
6090         memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
6091
6092         if (priv->ibss_beacon)
6093                 dev_kfree_skb(priv->ibss_beacon);
6094         priv->ibss_beacon = NULL;
6095
6096         /* clear out any free frames */
6097         iwl3945_clear_free_frames(priv);
6098 }
6099
6100 static void iwl3945_down(struct iwl3945_priv *priv)
6101 {
6102         mutex_lock(&priv->mutex);
6103         __iwl3945_down(priv);
6104         mutex_unlock(&priv->mutex);
6105
6106         iwl3945_cancel_deferred_work(priv);
6107 }
6108
6109 #define MAX_HW_RESTARTS 5
6110
6111 static int __iwl3945_up(struct iwl3945_priv *priv)
6112 {
6113         int rc, i;
6114
6115         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6116                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6117                 return -EIO;
6118         }
6119
6120         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6121                 IWL_WARNING("Radio disabled by SW RF kill (module "
6122                             "parameter)\n");
6123                 return -ENODEV;
6124         }
6125
6126         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6127                 IWL_ERROR("ucode not available for device bringup\n");
6128                 return -EIO;
6129         }
6130
6131         /* If platform's RF_KILL switch is NOT set to KILL */
6132         if (iwl3945_read32(priv, CSR_GP_CNTRL) &
6133                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6134                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6135         else {
6136                 set_bit(STATUS_RF_KILL_HW, &priv->status);
6137                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6138                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6139                         return -ENODEV;
6140                 }
6141         }
6142
6143         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6144
6145         rc = iwl3945_hw_nic_init(priv);
6146         if (rc) {
6147                 IWL_ERROR("Unable to int nic\n");
6148                 return rc;
6149         }
6150
6151         /* make sure rfkill handshake bits are cleared */
6152         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6153         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6154                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6155
6156         /* clear (again), then enable host interrupts */
6157         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6158         iwl3945_enable_interrupts(priv);
6159
6160         /* really make sure rfkill handshake bits are cleared */
6161         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6162         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6163
6164         /* Copy original ucode data image from disk into backup cache.
6165          * This will be used to initialize the on-board processor's
6166          * data SRAM for a clean start when the runtime program first loads. */
6167         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6168                priv->ucode_data.len);
6169
6170         /* We return success when we resume from suspend and rf_kill is on. */
6171         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6172                 return 0;
6173
6174         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6175
6176                 iwl3945_clear_stations_table(priv);
6177
6178                 /* load bootstrap state machine,
6179                  * load bootstrap program into processor's memory,
6180                  * prepare to load the "initialize" uCode */
6181                 rc = iwl3945_load_bsm(priv);
6182
6183                 if (rc) {
6184                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6185                         continue;
6186                 }
6187
6188                 /* start card; "initialize" will load runtime ucode */
6189                 iwl3945_nic_start(priv);
6190
6191                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6192
6193                 return 0;
6194         }
6195
6196         set_bit(STATUS_EXIT_PENDING, &priv->status);
6197         __iwl3945_down(priv);
6198
6199         /* tried to restart and config the device for as long as our
6200          * patience could withstand */
6201         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6202         return -EIO;
6203 }
6204
6205
6206 /*****************************************************************************
6207  *
6208  * Workqueue callbacks
6209  *
6210  *****************************************************************************/
6211
6212 static void iwl3945_bg_init_alive_start(struct work_struct *data)
6213 {
6214         struct iwl3945_priv *priv =
6215             container_of(data, struct iwl3945_priv, init_alive_start.work);
6216
6217         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6218                 return;
6219
6220         mutex_lock(&priv->mutex);
6221         iwl3945_init_alive_start(priv);
6222         mutex_unlock(&priv->mutex);
6223 }
6224
6225 static void iwl3945_bg_alive_start(struct work_struct *data)
6226 {
6227         struct iwl3945_priv *priv =
6228             container_of(data, struct iwl3945_priv, alive_start.work);
6229
6230         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6231                 return;
6232
6233         mutex_lock(&priv->mutex);
6234         iwl3945_alive_start(priv);
6235         mutex_unlock(&priv->mutex);
6236 }
6237
6238 static void iwl3945_bg_rf_kill(struct work_struct *work)
6239 {
6240         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
6241
6242         wake_up_interruptible(&priv->wait_command_queue);
6243
6244         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6245                 return;
6246
6247         mutex_lock(&priv->mutex);
6248
6249         if (!iwl3945_is_rfkill(priv)) {
6250                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6251                           "HW and/or SW RF Kill no longer active, restarting "
6252                           "device\n");
6253                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6254                         queue_work(priv->workqueue, &priv->restart);
6255         } else {
6256
6257                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6258                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6259                                           "disabled by SW switch\n");
6260                 else
6261                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6262                                     "Kill switch must be turned off for "
6263                                     "wireless networking to work.\n");
6264         }
6265         mutex_unlock(&priv->mutex);
6266 }
6267
6268 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6269
6270 static void iwl3945_bg_scan_check(struct work_struct *data)
6271 {
6272         struct iwl3945_priv *priv =
6273             container_of(data, struct iwl3945_priv, scan_check.work);
6274
6275         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6276                 return;
6277
6278         mutex_lock(&priv->mutex);
6279         if (test_bit(STATUS_SCANNING, &priv->status) ||
6280             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6281                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6282                           "Scan completion watchdog resetting adapter (%dms)\n",
6283                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6284
6285                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6286                         iwl3945_send_scan_abort(priv);
6287         }
6288         mutex_unlock(&priv->mutex);
6289 }
6290
6291 static void iwl3945_bg_request_scan(struct work_struct *data)
6292 {
6293         struct iwl3945_priv *priv =
6294             container_of(data, struct iwl3945_priv, request_scan);
6295         struct iwl3945_host_cmd cmd = {
6296                 .id = REPLY_SCAN_CMD,
6297                 .len = sizeof(struct iwl3945_scan_cmd),
6298                 .meta.flags = CMD_SIZE_HUGE,
6299         };
6300         int rc = 0;
6301         struct iwl3945_scan_cmd *scan;
6302         struct ieee80211_conf *conf = NULL;
6303         u8 direct_mask;
6304         enum ieee80211_band band;
6305
6306         conf = ieee80211_get_hw_conf(priv->hw);
6307
6308         mutex_lock(&priv->mutex);
6309
6310         if (!iwl3945_is_ready(priv)) {
6311                 IWL_WARNING("request scan called when driver not ready.\n");
6312                 goto done;
6313         }
6314
6315         /* Make sure the scan wasn't cancelled before this queued work
6316          * was given the chance to run... */
6317         if (!test_bit(STATUS_SCANNING, &priv->status))
6318                 goto done;
6319
6320         /* This should never be called or scheduled if there is currently
6321          * a scan active in the hardware. */
6322         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6323                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6324                                "Ignoring second request.\n");
6325                 rc = -EIO;
6326                 goto done;
6327         }
6328
6329         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6330                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6331                 goto done;
6332         }
6333
6334         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6335                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6336                 goto done;
6337         }
6338
6339         if (iwl3945_is_rfkill(priv)) {
6340                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6341                 goto done;
6342         }
6343
6344         if (!test_bit(STATUS_READY, &priv->status)) {
6345                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6346                 goto done;
6347         }
6348
6349         if (!priv->scan_bands) {
6350                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6351                 goto done;
6352         }
6353
6354         if (!priv->scan) {
6355                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6356                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6357                 if (!priv->scan) {
6358                         rc = -ENOMEM;
6359                         goto done;
6360                 }
6361         }
6362         scan = priv->scan;
6363         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6364
6365         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6366         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6367
6368         if (iwl3945_is_associated(priv)) {
6369                 u16 interval = 0;
6370                 u32 extra;
6371                 u32 suspend_time = 100;
6372                 u32 scan_suspend_time = 100;
6373                 unsigned long flags;
6374
6375                 IWL_DEBUG_INFO("Scanning while associated...\n");
6376
6377                 spin_lock_irqsave(&priv->lock, flags);
6378                 interval = priv->beacon_int;
6379                 spin_unlock_irqrestore(&priv->lock, flags);
6380
6381                 scan->suspend_time = 0;
6382                 scan->max_out_time = cpu_to_le32(200 * 1024);
6383                 if (!interval)
6384                         interval = suspend_time;
6385                 /*
6386                  * suspend time format:
6387                  *  0-19: beacon interval in usec (time before exec.)
6388                  * 20-23: 0
6389                  * 24-31: number of beacons (suspend between channels)
6390                  */
6391
6392                 extra = (suspend_time / interval) << 24;
6393                 scan_suspend_time = 0xFF0FFFFF &
6394                     (extra | ((suspend_time % interval) * 1024));
6395
6396                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6397                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6398                                scan_suspend_time, interval);
6399         }
6400
6401         /* We should add the ability for user to lock to PASSIVE ONLY */
6402         if (priv->one_direct_scan) {
6403                 IWL_DEBUG_SCAN
6404                     ("Kicking off one direct scan for '%s'\n",
6405                      iwl3945_escape_essid(priv->direct_ssid,
6406                                       priv->direct_ssid_len));
6407                 scan->direct_scan[0].id = WLAN_EID_SSID;
6408                 scan->direct_scan[0].len = priv->direct_ssid_len;
6409                 memcpy(scan->direct_scan[0].ssid,
6410                        priv->direct_ssid, priv->direct_ssid_len);
6411                 direct_mask = 1;
6412         } else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6413                 scan->direct_scan[0].id = WLAN_EID_SSID;
6414                 scan->direct_scan[0].len = priv->essid_len;
6415                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6416                 direct_mask = 1;
6417         } else
6418                 direct_mask = 0;
6419
6420         /* We don't build a direct scan probe request; the uCode will do
6421          * that based on the direct_mask added to each channel entry */
6422         scan->tx_cmd.len = cpu_to_le16(
6423                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6424                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
6425         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6426         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6427         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6428
6429         /* flags + rate selection */
6430
6431         switch (priv->scan_bands) {
6432         case 2:
6433                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6434                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6435                 scan->good_CRC_th = 0;
6436                 band = IEEE80211_BAND_2GHZ;
6437                 break;
6438
6439         case 1:
6440                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6441                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6442                 band = IEEE80211_BAND_5GHZ;
6443                 break;
6444
6445         default:
6446                 IWL_WARNING("Invalid scan band count\n");
6447                 goto done;
6448         }
6449
6450         /* select Rx antennas */
6451         scan->flags |= iwl3945_get_antenna_flags(priv);
6452
6453         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6454                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6455
6456         if (direct_mask)
6457                 IWL_DEBUG_SCAN
6458                     ("Initiating direct scan for %s.\n",
6459                      iwl3945_escape_essid(priv->essid, priv->essid_len));
6460         else
6461                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6462
6463         scan->channel_count =
6464                 iwl3945_get_channels_for_scan(
6465                         priv, band, 1, /* active */
6466                         direct_mask,
6467                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6468
6469         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6470             scan->channel_count * sizeof(struct iwl3945_scan_channel);
6471         cmd.data = scan;
6472         scan->len = cpu_to_le16(cmd.len);
6473
6474         set_bit(STATUS_SCAN_HW, &priv->status);
6475         rc = iwl3945_send_cmd_sync(priv, &cmd);
6476         if (rc)
6477                 goto done;
6478
6479         queue_delayed_work(priv->workqueue, &priv->scan_check,
6480                            IWL_SCAN_CHECK_WATCHDOG);
6481
6482         mutex_unlock(&priv->mutex);
6483         return;
6484
6485  done:
6486         /* inform mac80211 scan aborted */
6487         queue_work(priv->workqueue, &priv->scan_completed);
6488         mutex_unlock(&priv->mutex);
6489 }
6490
6491 static void iwl3945_bg_up(struct work_struct *data)
6492 {
6493         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6494
6495         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6496                 return;
6497
6498         mutex_lock(&priv->mutex);
6499         __iwl3945_up(priv);
6500         mutex_unlock(&priv->mutex);
6501 }
6502
6503 static void iwl3945_bg_restart(struct work_struct *data)
6504 {
6505         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6506
6507         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6508                 return;
6509
6510         iwl3945_down(priv);
6511         queue_work(priv->workqueue, &priv->up);
6512 }
6513
6514 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6515 {
6516         struct iwl3945_priv *priv =
6517             container_of(data, struct iwl3945_priv, rx_replenish);
6518
6519         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6520                 return;
6521
6522         mutex_lock(&priv->mutex);
6523         iwl3945_rx_replenish(priv);
6524         mutex_unlock(&priv->mutex);
6525 }
6526
6527 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6528
6529 static void iwl3945_bg_post_associate(struct work_struct *data)
6530 {
6531         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
6532                                              post_associate.work);
6533
6534         int rc = 0;
6535         struct ieee80211_conf *conf = NULL;
6536         DECLARE_MAC_BUF(mac);
6537
6538         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6539                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6540                 return;
6541         }
6542
6543
6544         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6545                         priv->assoc_id,
6546                         print_mac(mac, priv->active_rxon.bssid_addr));
6547
6548         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6549                 return;
6550
6551         mutex_lock(&priv->mutex);
6552
6553         if (!priv->vif || !priv->is_open) {
6554                 mutex_unlock(&priv->mutex);
6555                 return;
6556         }
6557         iwl3945_scan_cancel_timeout(priv, 200);
6558
6559         conf = ieee80211_get_hw_conf(priv->hw);
6560
6561         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6562         iwl3945_commit_rxon(priv);
6563
6564         memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6565         iwl3945_setup_rxon_timing(priv);
6566         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6567                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6568         if (rc)
6569                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6570                             "Attempting to continue.\n");
6571
6572         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6573
6574         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6575
6576         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6577                         priv->assoc_id, priv->beacon_int);
6578
6579         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6580                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6581         else
6582                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6583
6584         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6585                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6586                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6587                 else
6588                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6589
6590                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6591                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6592
6593         }
6594
6595         iwl3945_commit_rxon(priv);
6596
6597         switch (priv->iw_mode) {
6598         case IEEE80211_IF_TYPE_STA:
6599                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6600                 break;
6601
6602         case IEEE80211_IF_TYPE_IBSS:
6603
6604                 /* clear out the station table */
6605                 iwl3945_clear_stations_table(priv);
6606
6607                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6608                 iwl3945_add_station(priv, priv->bssid, 0, 0);
6609                 iwl3945_sync_sta(priv, IWL_STA_ID,
6610                                  (priv->band == IEEE80211_BAND_5GHZ) ?
6611                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6612                                  CMD_ASYNC);
6613                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6614                 iwl3945_send_beacon_cmd(priv);
6615
6616                 break;
6617
6618         default:
6619                  IWL_ERROR("%s Should not be called in %d mode\n",
6620                            __FUNCTION__, priv->iw_mode);
6621                 break;
6622         }
6623
6624         iwl3945_sequence_reset(priv);
6625
6626         iwl3945_activate_qos(priv, 0);
6627
6628         /* we have just associated, don't start scan too early */
6629         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6630         mutex_unlock(&priv->mutex);
6631 }
6632
6633 static void iwl3945_bg_abort_scan(struct work_struct *work)
6634 {
6635         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6636
6637         if (!iwl3945_is_ready(priv))
6638                 return;
6639
6640         mutex_lock(&priv->mutex);
6641
6642         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6643         iwl3945_send_scan_abort(priv);
6644
6645         mutex_unlock(&priv->mutex);
6646 }
6647
6648 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6649
6650 static void iwl3945_bg_scan_completed(struct work_struct *work)
6651 {
6652         struct iwl3945_priv *priv =
6653             container_of(work, struct iwl3945_priv, scan_completed);
6654
6655         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6656
6657         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6658                 return;
6659
6660         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6661                 iwl3945_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6662
6663         ieee80211_scan_completed(priv->hw);
6664
6665         /* Since setting the TXPOWER may have been deferred while
6666          * performing the scan, fire one off */
6667         mutex_lock(&priv->mutex);
6668         iwl3945_hw_reg_send_txpower(priv);
6669         mutex_unlock(&priv->mutex);
6670 }
6671
6672 /*****************************************************************************
6673  *
6674  * mac80211 entry point functions
6675  *
6676  *****************************************************************************/
6677
6678 #define UCODE_READY_TIMEOUT     (2 * HZ)
6679
6680 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6681 {
6682         struct iwl3945_priv *priv = hw->priv;
6683         int ret;
6684
6685         IWL_DEBUG_MAC80211("enter\n");
6686
6687         if (pci_enable_device(priv->pci_dev)) {
6688                 IWL_ERROR("Fail to pci_enable_device\n");
6689                 return -ENODEV;
6690         }
6691         pci_restore_state(priv->pci_dev);
6692         pci_enable_msi(priv->pci_dev);
6693
6694         ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6695                           DRV_NAME, priv);
6696         if (ret) {
6697                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6698                 goto out_disable_msi;
6699         }
6700
6701         /* we should be verifying the device is ready to be opened */
6702         mutex_lock(&priv->mutex);
6703
6704         memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6705         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6706          * ucode filename and max sizes are card-specific. */
6707
6708         if (!priv->ucode_code.len) {
6709                 ret = iwl3945_read_ucode(priv);
6710                 if (ret) {
6711                         IWL_ERROR("Could not read microcode: %d\n", ret);
6712                         mutex_unlock(&priv->mutex);
6713                         goto out_release_irq;
6714                 }
6715         }
6716
6717         ret = __iwl3945_up(priv);
6718
6719         mutex_unlock(&priv->mutex);
6720
6721         if (ret)
6722                 goto out_release_irq;
6723
6724         IWL_DEBUG_INFO("Start UP work.\n");
6725
6726         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6727                 return 0;
6728
6729         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6730          * mac80211 will not be run successfully. */
6731         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6732                         test_bit(STATUS_READY, &priv->status),
6733                         UCODE_READY_TIMEOUT);
6734         if (!ret) {
6735                 if (!test_bit(STATUS_READY, &priv->status)) {
6736                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6737                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6738                         ret = -ETIMEDOUT;
6739                         goto out_release_irq;
6740                 }
6741         }
6742
6743         priv->is_open = 1;
6744         IWL_DEBUG_MAC80211("leave\n");
6745         return 0;
6746
6747 out_release_irq:
6748         free_irq(priv->pci_dev->irq, priv);
6749 out_disable_msi:
6750         pci_disable_msi(priv->pci_dev);
6751         pci_disable_device(priv->pci_dev);
6752         priv->is_open = 0;
6753         IWL_DEBUG_MAC80211("leave - failed\n");
6754         return ret;
6755 }
6756
6757 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6758 {
6759         struct iwl3945_priv *priv = hw->priv;
6760
6761         IWL_DEBUG_MAC80211("enter\n");
6762
6763         if (!priv->is_open) {
6764                 IWL_DEBUG_MAC80211("leave - skip\n");
6765                 return;
6766         }
6767
6768         priv->is_open = 0;
6769
6770         if (iwl3945_is_ready_rf(priv)) {
6771                 /* stop mac, cancel any scan request and clear
6772                  * RXON_FILTER_ASSOC_MSK BIT
6773                  */
6774                 mutex_lock(&priv->mutex);
6775                 iwl3945_scan_cancel_timeout(priv, 100);
6776                 cancel_delayed_work(&priv->post_associate);
6777                 mutex_unlock(&priv->mutex);
6778         }
6779
6780         iwl3945_down(priv);
6781
6782         flush_workqueue(priv->workqueue);
6783         free_irq(priv->pci_dev->irq, priv);
6784         pci_disable_msi(priv->pci_dev);
6785         pci_save_state(priv->pci_dev);
6786         pci_disable_device(priv->pci_dev);
6787
6788         IWL_DEBUG_MAC80211("leave\n");
6789 }
6790
6791 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6792                       struct ieee80211_tx_control *ctl)
6793 {
6794         struct iwl3945_priv *priv = hw->priv;
6795
6796         IWL_DEBUG_MAC80211("enter\n");
6797
6798         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6799                 IWL_DEBUG_MAC80211("leave - monitor\n");
6800                 return -1;
6801         }
6802
6803         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6804                      ctl->tx_rate->bitrate);
6805
6806         if (iwl3945_tx_skb(priv, skb, ctl))
6807                 dev_kfree_skb_any(skb);
6808
6809         IWL_DEBUG_MAC80211("leave\n");
6810         return 0;
6811 }
6812
6813 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6814                                  struct ieee80211_if_init_conf *conf)
6815 {
6816         struct iwl3945_priv *priv = hw->priv;
6817         unsigned long flags;
6818         DECLARE_MAC_BUF(mac);
6819
6820         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6821
6822         if (priv->vif) {
6823                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6824                 return -EOPNOTSUPP;
6825         }
6826
6827         spin_lock_irqsave(&priv->lock, flags);
6828         priv->vif = conf->vif;
6829
6830         spin_unlock_irqrestore(&priv->lock, flags);
6831
6832         mutex_lock(&priv->mutex);
6833
6834         if (conf->mac_addr) {
6835                 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
6836                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6837         }
6838
6839         if (iwl3945_is_ready(priv))
6840                 iwl3945_set_mode(priv, conf->type);
6841
6842         mutex_unlock(&priv->mutex);
6843
6844         IWL_DEBUG_MAC80211("leave\n");
6845         return 0;
6846 }
6847
6848 /**
6849  * iwl3945_mac_config - mac80211 config callback
6850  *
6851  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6852  * be set inappropriately and the driver currently sets the hardware up to
6853  * use it whenever needed.
6854  */
6855 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6856 {
6857         struct iwl3945_priv *priv = hw->priv;
6858         const struct iwl3945_channel_info *ch_info;
6859         unsigned long flags;
6860         int ret = 0;
6861
6862         mutex_lock(&priv->mutex);
6863         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6864
6865         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6866
6867         if (!iwl3945_is_ready(priv)) {
6868                 IWL_DEBUG_MAC80211("leave - not ready\n");
6869                 ret = -EIO;
6870                 goto out;
6871         }
6872
6873         if (unlikely(!iwl3945_param_disable_hw_scan &&
6874                      test_bit(STATUS_SCANNING, &priv->status))) {
6875                 IWL_DEBUG_MAC80211("leave - scanning\n");
6876                 set_bit(STATUS_CONF_PENDING, &priv->status);
6877                 mutex_unlock(&priv->mutex);
6878                 return 0;
6879         }
6880
6881         spin_lock_irqsave(&priv->lock, flags);
6882
6883         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6884                                            conf->channel->hw_value);
6885         if (!is_channel_valid(ch_info)) {
6886                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
6887                                conf->channel->hw_value, conf->channel->band);
6888                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6889                 spin_unlock_irqrestore(&priv->lock, flags);
6890                 ret = -EINVAL;
6891                 goto out;
6892         }
6893
6894         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6895
6896         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6897
6898         /* The list of supported rates and rate mask can be different
6899          * for each phymode; since the phymode may have changed, reset
6900          * the rate mask to what mac80211 lists */
6901         iwl3945_set_rate(priv);
6902
6903         spin_unlock_irqrestore(&priv->lock, flags);
6904
6905 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6906         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6907                 iwl3945_hw_channel_switch(priv, conf->channel);
6908                 goto out;
6909         }
6910 #endif
6911
6912         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6913
6914         if (!conf->radio_enabled) {
6915                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6916                 goto out;
6917         }
6918
6919         if (iwl3945_is_rfkill(priv)) {
6920                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6921                 ret = -EIO;
6922                 goto out;
6923         }
6924
6925         iwl3945_set_rate(priv);
6926
6927         if (memcmp(&priv->active_rxon,
6928                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6929                 iwl3945_commit_rxon(priv);
6930         else
6931                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6932
6933         IWL_DEBUG_MAC80211("leave\n");
6934
6935 out:
6936         clear_bit(STATUS_CONF_PENDING, &priv->status);
6937         mutex_unlock(&priv->mutex);
6938         return ret;
6939 }
6940
6941 static void iwl3945_config_ap(struct iwl3945_priv *priv)
6942 {
6943         int rc = 0;
6944
6945         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6946                 return;
6947
6948         /* The following should be done only at AP bring up */
6949         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6950
6951                 /* RXON - unassoc (to set timing command) */
6952                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6953                 iwl3945_commit_rxon(priv);
6954
6955                 /* RXON Timing */
6956                 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6957                 iwl3945_setup_rxon_timing(priv);
6958                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6959                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6960                 if (rc)
6961                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6962                                         "Attempting to continue.\n");
6963
6964                 /* FIXME: what should be the assoc_id for AP? */
6965                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6966                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6967                         priv->staging_rxon.flags |=
6968                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6969                 else
6970                         priv->staging_rxon.flags &=
6971                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6972
6973                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6974                         if (priv->assoc_capability &
6975                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6976                                 priv->staging_rxon.flags |=
6977                                         RXON_FLG_SHORT_SLOT_MSK;
6978                         else
6979                                 priv->staging_rxon.flags &=
6980                                         ~RXON_FLG_SHORT_SLOT_MSK;
6981
6982                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6983                                 priv->staging_rxon.flags &=
6984                                         ~RXON_FLG_SHORT_SLOT_MSK;
6985                 }
6986                 /* restore RXON assoc */
6987                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6988                 iwl3945_commit_rxon(priv);
6989                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6990         }
6991         iwl3945_send_beacon_cmd(priv);
6992
6993         /* FIXME - we need to add code here to detect a totally new
6994          * configuration, reset the AP, unassoc, rxon timing, assoc,
6995          * clear sta table, add BCAST sta... */
6996 }
6997
6998 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6999                                         struct ieee80211_vif *vif,
7000                                     struct ieee80211_if_conf *conf)
7001 {
7002         struct iwl3945_priv *priv = hw->priv;
7003         DECLARE_MAC_BUF(mac);
7004         unsigned long flags;
7005         int rc;
7006
7007         if (conf == NULL)
7008                 return -EIO;
7009
7010         /* XXX: this MUST use conf->mac_addr */
7011
7012         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7013             (!conf->beacon || !conf->ssid_len)) {
7014                 IWL_DEBUG_MAC80211
7015                     ("Leaving in AP mode because HostAPD is not ready.\n");
7016                 return 0;
7017         }
7018
7019         if (!iwl3945_is_alive(priv))
7020                 return -EAGAIN;
7021
7022         mutex_lock(&priv->mutex);
7023
7024         if (conf->bssid)
7025                 IWL_DEBUG_MAC80211("bssid: %s\n",
7026                                    print_mac(mac, conf->bssid));
7027
7028 /*
7029  * very dubious code was here; the probe filtering flag is never set:
7030  *
7031         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7032             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7033  */
7034         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7035                 IWL_DEBUG_MAC80211("leave - scanning\n");
7036                 mutex_unlock(&priv->mutex);
7037                 return 0;
7038         }
7039
7040         if (priv->vif != vif) {
7041                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7042                 mutex_unlock(&priv->mutex);
7043                 return 0;
7044         }
7045
7046         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7047                 if (!conf->bssid) {
7048                         conf->bssid = priv->mac_addr;
7049                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7050                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7051                                            print_mac(mac, conf->bssid));
7052                 }
7053                 if (priv->ibss_beacon)
7054                         dev_kfree_skb(priv->ibss_beacon);
7055
7056                 priv->ibss_beacon = conf->beacon;
7057         }
7058
7059         if (iwl3945_is_rfkill(priv))
7060                 goto done;
7061
7062         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7063             !is_multicast_ether_addr(conf->bssid)) {
7064                 /* If there is currently a HW scan going on in the background
7065                  * then we need to cancel it else the RXON below will fail. */
7066                 if (iwl3945_scan_cancel_timeout(priv, 100)) {
7067                         IWL_WARNING("Aborted scan still in progress "
7068                                     "after 100ms\n");
7069                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7070                         mutex_unlock(&priv->mutex);
7071                         return -EAGAIN;
7072                 }
7073                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7074
7075                 /* TODO: Audit driver for usage of these members and see
7076                  * if mac80211 deprecates them (priv->bssid looks like it
7077                  * shouldn't be there, but I haven't scanned the IBSS code
7078                  * to verify) - jpk */
7079                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7080
7081                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7082                         iwl3945_config_ap(priv);
7083                 else {
7084                         rc = iwl3945_commit_rxon(priv);
7085                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7086                                 iwl3945_add_station(priv,
7087                                         priv->active_rxon.bssid_addr, 1, 0);
7088                 }
7089
7090         } else {
7091                 iwl3945_scan_cancel_timeout(priv, 100);
7092                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7093                 iwl3945_commit_rxon(priv);
7094         }
7095
7096  done:
7097         spin_lock_irqsave(&priv->lock, flags);
7098         if (!conf->ssid_len)
7099                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7100         else
7101                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7102
7103         priv->essid_len = conf->ssid_len;
7104         spin_unlock_irqrestore(&priv->lock, flags);
7105
7106         IWL_DEBUG_MAC80211("leave\n");
7107         mutex_unlock(&priv->mutex);
7108
7109         return 0;
7110 }
7111
7112 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
7113                                  unsigned int changed_flags,
7114                                  unsigned int *total_flags,
7115                                  int mc_count, struct dev_addr_list *mc_list)
7116 {
7117         /*
7118          * XXX: dummy
7119          * see also iwl3945_connection_init_rx_config
7120          */
7121         *total_flags = 0;
7122 }
7123
7124 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
7125                                      struct ieee80211_if_init_conf *conf)
7126 {
7127         struct iwl3945_priv *priv = hw->priv;
7128
7129         IWL_DEBUG_MAC80211("enter\n");
7130
7131         mutex_lock(&priv->mutex);
7132
7133         if (iwl3945_is_ready_rf(priv)) {
7134                 iwl3945_scan_cancel_timeout(priv, 100);
7135                 cancel_delayed_work(&priv->post_associate);
7136                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7137                 iwl3945_commit_rxon(priv);
7138         }
7139         if (priv->vif == conf->vif) {
7140                 priv->vif = NULL;
7141                 memset(priv->bssid, 0, ETH_ALEN);
7142                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7143                 priv->essid_len = 0;
7144         }
7145         mutex_unlock(&priv->mutex);
7146
7147         IWL_DEBUG_MAC80211("leave\n");
7148 }
7149
7150 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7151 {
7152         int rc = 0;
7153         unsigned long flags;
7154         struct iwl3945_priv *priv = hw->priv;
7155
7156         IWL_DEBUG_MAC80211("enter\n");
7157
7158         mutex_lock(&priv->mutex);
7159         spin_lock_irqsave(&priv->lock, flags);
7160
7161         if (!iwl3945_is_ready_rf(priv)) {
7162                 rc = -EIO;
7163                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7164                 goto out_unlock;
7165         }
7166
7167         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7168                 rc = -EIO;
7169                 IWL_ERROR("ERROR: APs don't scan\n");
7170                 goto out_unlock;
7171         }
7172
7173         /* we don't schedule scan within next_scan_jiffies period */
7174         if (priv->next_scan_jiffies &&
7175                         time_after(priv->next_scan_jiffies, jiffies)) {
7176                 rc = -EAGAIN;
7177                 goto out_unlock;
7178         }
7179         /* if we just finished scan ask for delay */
7180         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7181                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
7182                 rc = -EAGAIN;
7183                 goto out_unlock;
7184         }
7185         if (len) {
7186                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7187                                iwl3945_escape_essid(ssid, len), (int)len);
7188
7189                 priv->one_direct_scan = 1;
7190                 priv->direct_ssid_len = (u8)
7191                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7192                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7193         } else
7194                 priv->one_direct_scan = 0;
7195
7196         rc = iwl3945_scan_initiate(priv);
7197
7198         IWL_DEBUG_MAC80211("leave\n");
7199
7200 out_unlock:
7201         spin_unlock_irqrestore(&priv->lock, flags);
7202         mutex_unlock(&priv->mutex);
7203
7204         return rc;
7205 }
7206
7207 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7208                            const u8 *local_addr, const u8 *addr,
7209                            struct ieee80211_key_conf *key)
7210 {
7211         struct iwl3945_priv *priv = hw->priv;
7212         int rc = 0;
7213         u8 sta_id;
7214
7215         IWL_DEBUG_MAC80211("enter\n");
7216
7217         if (!iwl3945_param_hwcrypto) {
7218                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7219                 return -EOPNOTSUPP;
7220         }
7221
7222         if (is_zero_ether_addr(addr))
7223                 /* only support pairwise keys */
7224                 return -EOPNOTSUPP;
7225
7226         sta_id = iwl3945_hw_find_station(priv, addr);
7227         if (sta_id == IWL_INVALID_STATION) {
7228                 DECLARE_MAC_BUF(mac);
7229
7230                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7231                                    print_mac(mac, addr));
7232                 return -EINVAL;
7233         }
7234
7235         mutex_lock(&priv->mutex);
7236
7237         iwl3945_scan_cancel_timeout(priv, 100);
7238
7239         switch (cmd) {
7240         case  SET_KEY:
7241                 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7242                 if (!rc) {
7243                         iwl3945_set_rxon_hwcrypto(priv, 1);
7244                         iwl3945_commit_rxon(priv);
7245                         key->hw_key_idx = sta_id;
7246                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7247                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7248                 }
7249                 break;
7250         case DISABLE_KEY:
7251                 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7252                 if (!rc) {
7253                         iwl3945_set_rxon_hwcrypto(priv, 0);
7254                         iwl3945_commit_rxon(priv);
7255                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7256                 }
7257                 break;
7258         default:
7259                 rc = -EINVAL;
7260         }
7261
7262         IWL_DEBUG_MAC80211("leave\n");
7263         mutex_unlock(&priv->mutex);
7264
7265         return rc;
7266 }
7267
7268 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7269                            const struct ieee80211_tx_queue_params *params)
7270 {
7271         struct iwl3945_priv *priv = hw->priv;
7272         unsigned long flags;
7273         int q;
7274
7275         IWL_DEBUG_MAC80211("enter\n");
7276
7277         if (!iwl3945_is_ready_rf(priv)) {
7278                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7279                 return -EIO;
7280         }
7281
7282         if (queue >= AC_NUM) {
7283                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7284                 return 0;
7285         }
7286
7287         if (!priv->qos_data.qos_enable) {
7288                 priv->qos_data.qos_active = 0;
7289                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7290                 return 0;
7291         }
7292         q = AC_NUM - 1 - queue;
7293
7294         spin_lock_irqsave(&priv->lock, flags);
7295
7296         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7297         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7298         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7299         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7300                         cpu_to_le16((params->txop * 32));
7301
7302         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7303         priv->qos_data.qos_active = 1;
7304
7305         spin_unlock_irqrestore(&priv->lock, flags);
7306
7307         mutex_lock(&priv->mutex);
7308         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7309                 iwl3945_activate_qos(priv, 1);
7310         else if (priv->assoc_id && iwl3945_is_associated(priv))
7311                 iwl3945_activate_qos(priv, 0);
7312
7313         mutex_unlock(&priv->mutex);
7314
7315         IWL_DEBUG_MAC80211("leave\n");
7316         return 0;
7317 }
7318
7319 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7320                                 struct ieee80211_tx_queue_stats *stats)
7321 {
7322         struct iwl3945_priv *priv = hw->priv;
7323         int i, avail;
7324         struct iwl3945_tx_queue *txq;
7325         struct iwl3945_queue *q;
7326         unsigned long flags;
7327
7328         IWL_DEBUG_MAC80211("enter\n");
7329
7330         if (!iwl3945_is_ready_rf(priv)) {
7331                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7332                 return -EIO;
7333         }
7334
7335         spin_lock_irqsave(&priv->lock, flags);
7336
7337         for (i = 0; i < AC_NUM; i++) {
7338                 txq = &priv->txq[i];
7339                 q = &txq->q;
7340                 avail = iwl3945_queue_space(q);
7341
7342                 stats->data[i].len = q->n_window - avail;
7343                 stats->data[i].limit = q->n_window - q->high_mark;
7344                 stats->data[i].count = q->n_window;
7345
7346         }
7347         spin_unlock_irqrestore(&priv->lock, flags);
7348
7349         IWL_DEBUG_MAC80211("leave\n");
7350
7351         return 0;
7352 }
7353
7354 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7355                              struct ieee80211_low_level_stats *stats)
7356 {
7357         IWL_DEBUG_MAC80211("enter\n");
7358         IWL_DEBUG_MAC80211("leave\n");
7359
7360         return 0;
7361 }
7362
7363 static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
7364 {
7365         IWL_DEBUG_MAC80211("enter\n");
7366         IWL_DEBUG_MAC80211("leave\n");
7367
7368         return 0;
7369 }
7370
7371 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7372 {
7373         struct iwl3945_priv *priv = hw->priv;
7374         unsigned long flags;
7375
7376         mutex_lock(&priv->mutex);
7377         IWL_DEBUG_MAC80211("enter\n");
7378
7379         iwl3945_reset_qos(priv);
7380
7381         cancel_delayed_work(&priv->post_associate);
7382
7383         spin_lock_irqsave(&priv->lock, flags);
7384         priv->assoc_id = 0;
7385         priv->assoc_capability = 0;
7386         priv->call_post_assoc_from_beacon = 0;
7387
7388         /* new association get rid of ibss beacon skb */
7389         if (priv->ibss_beacon)
7390                 dev_kfree_skb(priv->ibss_beacon);
7391
7392         priv->ibss_beacon = NULL;
7393
7394         priv->beacon_int = priv->hw->conf.beacon_int;
7395         priv->timestamp1 = 0;
7396         priv->timestamp0 = 0;
7397         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7398                 priv->beacon_int = 0;
7399
7400         spin_unlock_irqrestore(&priv->lock, flags);
7401
7402         if (!iwl3945_is_ready_rf(priv)) {
7403                 IWL_DEBUG_MAC80211("leave - not ready\n");
7404                 mutex_unlock(&priv->mutex);
7405                 return;
7406         }
7407
7408         /* we are restarting association process
7409          * clear RXON_FILTER_ASSOC_MSK bit
7410         */
7411         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7412                 iwl3945_scan_cancel_timeout(priv, 100);
7413                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7414                 iwl3945_commit_rxon(priv);
7415         }
7416
7417         /* Per mac80211.h: This is only used in IBSS mode... */
7418         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7419
7420                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7421                 mutex_unlock(&priv->mutex);
7422                 return;
7423         }
7424
7425         priv->only_active_channel = 0;
7426
7427         iwl3945_set_rate(priv);
7428
7429         mutex_unlock(&priv->mutex);
7430
7431         IWL_DEBUG_MAC80211("leave\n");
7432
7433 }
7434
7435 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7436                                  struct ieee80211_tx_control *control)
7437 {
7438         struct iwl3945_priv *priv = hw->priv;
7439         unsigned long flags;
7440
7441         mutex_lock(&priv->mutex);
7442         IWL_DEBUG_MAC80211("enter\n");
7443
7444         if (!iwl3945_is_ready_rf(priv)) {
7445                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7446                 mutex_unlock(&priv->mutex);
7447                 return -EIO;
7448         }
7449
7450         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7451                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7452                 mutex_unlock(&priv->mutex);
7453                 return -EIO;
7454         }
7455
7456         spin_lock_irqsave(&priv->lock, flags);
7457
7458         if (priv->ibss_beacon)
7459                 dev_kfree_skb(priv->ibss_beacon);
7460
7461         priv->ibss_beacon = skb;
7462
7463         priv->assoc_id = 0;
7464
7465         IWL_DEBUG_MAC80211("leave\n");
7466         spin_unlock_irqrestore(&priv->lock, flags);
7467
7468         iwl3945_reset_qos(priv);
7469
7470         queue_work(priv->workqueue, &priv->post_associate.work);
7471
7472         mutex_unlock(&priv->mutex);
7473
7474         return 0;
7475 }
7476
7477 /*****************************************************************************
7478  *
7479  * sysfs attributes
7480  *
7481  *****************************************************************************/
7482
7483 #ifdef CONFIG_IWL3945_DEBUG
7484
7485 /*
7486  * The following adds a new attribute to the sysfs representation
7487  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7488  * used for controlling the debug level.
7489  *
7490  * See the level definitions in iwl for details.
7491  */
7492
7493 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7494 {
7495         return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7496 }
7497 static ssize_t store_debug_level(struct device_driver *d,
7498                                  const char *buf, size_t count)
7499 {
7500         char *p = (char *)buf;
7501         u32 val;
7502
7503         val = simple_strtoul(p, &p, 0);
7504         if (p == buf)
7505                 printk(KERN_INFO DRV_NAME
7506                        ": %s is not in hex or decimal form.\n", buf);
7507         else
7508                 iwl3945_debug_level = val;
7509
7510         return strnlen(buf, count);
7511 }
7512
7513 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7514                    show_debug_level, store_debug_level);
7515
7516 #endif /* CONFIG_IWL3945_DEBUG */
7517
7518 static ssize_t show_rf_kill(struct device *d,
7519                             struct device_attribute *attr, char *buf)
7520 {
7521         /*
7522          * 0 - RF kill not enabled
7523          * 1 - SW based RF kill active (sysfs)
7524          * 2 - HW based RF kill active
7525          * 3 - Both HW and SW based RF kill active
7526          */
7527         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7528         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7529                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7530
7531         return sprintf(buf, "%i\n", val);
7532 }
7533
7534 static ssize_t store_rf_kill(struct device *d,
7535                              struct device_attribute *attr,
7536                              const char *buf, size_t count)
7537 {
7538         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7539
7540         mutex_lock(&priv->mutex);
7541         iwl3945_radio_kill_sw(priv, buf[0] == '1');
7542         mutex_unlock(&priv->mutex);
7543
7544         return count;
7545 }
7546
7547 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7548
7549 static ssize_t show_temperature(struct device *d,
7550                                 struct device_attribute *attr, char *buf)
7551 {
7552         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7553
7554         if (!iwl3945_is_alive(priv))
7555                 return -EAGAIN;
7556
7557         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7558 }
7559
7560 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7561
7562 static ssize_t show_rs_window(struct device *d,
7563                               struct device_attribute *attr,
7564                               char *buf)
7565 {
7566         struct iwl3945_priv *priv = d->driver_data;
7567         return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7568 }
7569 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7570
7571 static ssize_t show_tx_power(struct device *d,
7572                              struct device_attribute *attr, char *buf)
7573 {
7574         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7575         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7576 }
7577
7578 static ssize_t store_tx_power(struct device *d,
7579                               struct device_attribute *attr,
7580                               const char *buf, size_t count)
7581 {
7582         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7583         char *p = (char *)buf;
7584         u32 val;
7585
7586         val = simple_strtoul(p, &p, 10);
7587         if (p == buf)
7588                 printk(KERN_INFO DRV_NAME
7589                        ": %s is not in decimal form.\n", buf);
7590         else
7591                 iwl3945_hw_reg_set_txpower(priv, val);
7592
7593         return count;
7594 }
7595
7596 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7597
7598 static ssize_t show_flags(struct device *d,
7599                           struct device_attribute *attr, char *buf)
7600 {
7601         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7602
7603         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7604 }
7605
7606 static ssize_t store_flags(struct device *d,
7607                            struct device_attribute *attr,
7608                            const char *buf, size_t count)
7609 {
7610         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7611         u32 flags = simple_strtoul(buf, NULL, 0);
7612
7613         mutex_lock(&priv->mutex);
7614         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7615                 /* Cancel any currently running scans... */
7616                 if (iwl3945_scan_cancel_timeout(priv, 100))
7617                         IWL_WARNING("Could not cancel scan.\n");
7618                 else {
7619                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7620                                        flags);
7621                         priv->staging_rxon.flags = cpu_to_le32(flags);
7622                         iwl3945_commit_rxon(priv);
7623                 }
7624         }
7625         mutex_unlock(&priv->mutex);
7626
7627         return count;
7628 }
7629
7630 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7631
7632 static ssize_t show_filter_flags(struct device *d,
7633                                  struct device_attribute *attr, char *buf)
7634 {
7635         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7636
7637         return sprintf(buf, "0x%04X\n",
7638                 le32_to_cpu(priv->active_rxon.filter_flags));
7639 }
7640
7641 static ssize_t store_filter_flags(struct device *d,
7642                                   struct device_attribute *attr,
7643                                   const char *buf, size_t count)
7644 {
7645         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7646         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7647
7648         mutex_lock(&priv->mutex);
7649         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7650                 /* Cancel any currently running scans... */
7651                 if (iwl3945_scan_cancel_timeout(priv, 100))
7652                         IWL_WARNING("Could not cancel scan.\n");
7653                 else {
7654                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7655                                        "0x%04X\n", filter_flags);
7656                         priv->staging_rxon.filter_flags =
7657                                 cpu_to_le32(filter_flags);
7658                         iwl3945_commit_rxon(priv);
7659                 }
7660         }
7661         mutex_unlock(&priv->mutex);
7662
7663         return count;
7664 }
7665
7666 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7667                    store_filter_flags);
7668
7669 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7670
7671 static ssize_t show_measurement(struct device *d,
7672                                 struct device_attribute *attr, char *buf)
7673 {
7674         struct iwl3945_priv *priv = dev_get_drvdata(d);
7675         struct iwl3945_spectrum_notification measure_report;
7676         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7677         u8 *data = (u8 *) & measure_report;
7678         unsigned long flags;
7679
7680         spin_lock_irqsave(&priv->lock, flags);
7681         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7682                 spin_unlock_irqrestore(&priv->lock, flags);
7683                 return 0;
7684         }
7685         memcpy(&measure_report, &priv->measure_report, size);
7686         priv->measurement_status = 0;
7687         spin_unlock_irqrestore(&priv->lock, flags);
7688
7689         while (size && (PAGE_SIZE - len)) {
7690                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7691                                    PAGE_SIZE - len, 1);
7692                 len = strlen(buf);
7693                 if (PAGE_SIZE - len)
7694                         buf[len++] = '\n';
7695
7696                 ofs += 16;
7697                 size -= min(size, 16U);
7698         }
7699
7700         return len;
7701 }
7702
7703 static ssize_t store_measurement(struct device *d,
7704                                  struct device_attribute *attr,
7705                                  const char *buf, size_t count)
7706 {
7707         struct iwl3945_priv *priv = dev_get_drvdata(d);
7708         struct ieee80211_measurement_params params = {
7709                 .channel = le16_to_cpu(priv->active_rxon.channel),
7710                 .start_time = cpu_to_le64(priv->last_tsf),
7711                 .duration = cpu_to_le16(1),
7712         };
7713         u8 type = IWL_MEASURE_BASIC;
7714         u8 buffer[32];
7715         u8 channel;
7716
7717         if (count) {
7718                 char *p = buffer;
7719                 strncpy(buffer, buf, min(sizeof(buffer), count));
7720                 channel = simple_strtoul(p, NULL, 0);
7721                 if (channel)
7722                         params.channel = channel;
7723
7724                 p = buffer;
7725                 while (*p && *p != ' ')
7726                         p++;
7727                 if (*p)
7728                         type = simple_strtoul(p + 1, NULL, 0);
7729         }
7730
7731         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7732                        "channel %d (for '%s')\n", type, params.channel, buf);
7733         iwl3945_get_measurement(priv, &params, type);
7734
7735         return count;
7736 }
7737
7738 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7739                    show_measurement, store_measurement);
7740 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7741
7742 static ssize_t store_retry_rate(struct device *d,
7743                                 struct device_attribute *attr,
7744                                 const char *buf, size_t count)
7745 {
7746         struct iwl3945_priv *priv = dev_get_drvdata(d);
7747
7748         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7749         if (priv->retry_rate <= 0)
7750                 priv->retry_rate = 1;
7751
7752         return count;
7753 }
7754
7755 static ssize_t show_retry_rate(struct device *d,
7756                                struct device_attribute *attr, char *buf)
7757 {
7758         struct iwl3945_priv *priv = dev_get_drvdata(d);
7759         return sprintf(buf, "%d", priv->retry_rate);
7760 }
7761
7762 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7763                    store_retry_rate);
7764
7765 static ssize_t store_power_level(struct device *d,
7766                                  struct device_attribute *attr,
7767                                  const char *buf, size_t count)
7768 {
7769         struct iwl3945_priv *priv = dev_get_drvdata(d);
7770         int rc;
7771         int mode;
7772
7773         mode = simple_strtoul(buf, NULL, 0);
7774         mutex_lock(&priv->mutex);
7775
7776         if (!iwl3945_is_ready(priv)) {
7777                 rc = -EAGAIN;
7778                 goto out;
7779         }
7780
7781         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7782                 mode = IWL_POWER_AC;
7783         else
7784                 mode |= IWL_POWER_ENABLED;
7785
7786         if (mode != priv->power_mode) {
7787                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7788                 if (rc) {
7789                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7790                         goto out;
7791                 }
7792                 priv->power_mode = mode;
7793         }
7794
7795         rc = count;
7796
7797  out:
7798         mutex_unlock(&priv->mutex);
7799         return rc;
7800 }
7801
7802 #define MAX_WX_STRING 80
7803
7804 /* Values are in microsecond */
7805 static const s32 timeout_duration[] = {
7806         350000,
7807         250000,
7808         75000,
7809         37000,
7810         25000,
7811 };
7812 static const s32 period_duration[] = {
7813         400000,
7814         700000,
7815         1000000,
7816         1000000,
7817         1000000
7818 };
7819
7820 static ssize_t show_power_level(struct device *d,
7821                                 struct device_attribute *attr, char *buf)
7822 {
7823         struct iwl3945_priv *priv = dev_get_drvdata(d);
7824         int level = IWL_POWER_LEVEL(priv->power_mode);
7825         char *p = buf;
7826
7827         p += sprintf(p, "%d ", level);
7828         switch (level) {
7829         case IWL_POWER_MODE_CAM:
7830         case IWL_POWER_AC:
7831                 p += sprintf(p, "(AC)");
7832                 break;
7833         case IWL_POWER_BATTERY:
7834                 p += sprintf(p, "(BATTERY)");
7835                 break;
7836         default:
7837                 p += sprintf(p,
7838                              "(Timeout %dms, Period %dms)",
7839                              timeout_duration[level - 1] / 1000,
7840                              period_duration[level - 1] / 1000);
7841         }
7842
7843         if (!(priv->power_mode & IWL_POWER_ENABLED))
7844                 p += sprintf(p, " OFF\n");
7845         else
7846                 p += sprintf(p, " \n");
7847
7848         return (p - buf + 1);
7849
7850 }
7851
7852 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7853                    store_power_level);
7854
7855 static ssize_t show_channels(struct device *d,
7856                              struct device_attribute *attr, char *buf)
7857 {
7858         /* all this shit doesn't belong into sysfs anyway */
7859         return 0;
7860 }
7861
7862 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7863
7864 static ssize_t show_statistics(struct device *d,
7865                                struct device_attribute *attr, char *buf)
7866 {
7867         struct iwl3945_priv *priv = dev_get_drvdata(d);
7868         u32 size = sizeof(struct iwl3945_notif_statistics);
7869         u32 len = 0, ofs = 0;
7870         u8 *data = (u8 *) & priv->statistics;
7871         int rc = 0;
7872
7873         if (!iwl3945_is_alive(priv))
7874                 return -EAGAIN;
7875
7876         mutex_lock(&priv->mutex);
7877         rc = iwl3945_send_statistics_request(priv);
7878         mutex_unlock(&priv->mutex);
7879
7880         if (rc) {
7881                 len = sprintf(buf,
7882                               "Error sending statistics request: 0x%08X\n", rc);
7883                 return len;
7884         }
7885
7886         while (size && (PAGE_SIZE - len)) {
7887                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7888                                    PAGE_SIZE - len, 1);
7889                 len = strlen(buf);
7890                 if (PAGE_SIZE - len)
7891                         buf[len++] = '\n';
7892
7893                 ofs += 16;
7894                 size -= min(size, 16U);
7895         }
7896
7897         return len;
7898 }
7899
7900 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7901
7902 static ssize_t show_antenna(struct device *d,
7903                             struct device_attribute *attr, char *buf)
7904 {
7905         struct iwl3945_priv *priv = dev_get_drvdata(d);
7906
7907         if (!iwl3945_is_alive(priv))
7908                 return -EAGAIN;
7909
7910         return sprintf(buf, "%d\n", priv->antenna);
7911 }
7912
7913 static ssize_t store_antenna(struct device *d,
7914                              struct device_attribute *attr,
7915                              const char *buf, size_t count)
7916 {
7917         int ant;
7918         struct iwl3945_priv *priv = dev_get_drvdata(d);
7919
7920         if (count == 0)
7921                 return 0;
7922
7923         if (sscanf(buf, "%1i", &ant) != 1) {
7924                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7925                 return count;
7926         }
7927
7928         if ((ant >= 0) && (ant <= 2)) {
7929                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7930                 priv->antenna = (enum iwl3945_antenna)ant;
7931         } else
7932                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7933
7934
7935         return count;
7936 }
7937
7938 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7939
7940 static ssize_t show_status(struct device *d,
7941                            struct device_attribute *attr, char *buf)
7942 {
7943         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7944         if (!iwl3945_is_alive(priv))
7945                 return -EAGAIN;
7946         return sprintf(buf, "0x%08x\n", (int)priv->status);
7947 }
7948
7949 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7950
7951 static ssize_t dump_error_log(struct device *d,
7952                               struct device_attribute *attr,
7953                               const char *buf, size_t count)
7954 {
7955         char *p = (char *)buf;
7956
7957         if (p[0] == '1')
7958                 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
7959
7960         return strnlen(buf, count);
7961 }
7962
7963 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7964
7965 static ssize_t dump_event_log(struct device *d,
7966                               struct device_attribute *attr,
7967                               const char *buf, size_t count)
7968 {
7969         char *p = (char *)buf;
7970
7971         if (p[0] == '1')
7972                 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
7973
7974         return strnlen(buf, count);
7975 }
7976
7977 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7978
7979 /*****************************************************************************
7980  *
7981  * driver setup and teardown
7982  *
7983  *****************************************************************************/
7984
7985 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
7986 {
7987         priv->workqueue = create_workqueue(DRV_NAME);
7988
7989         init_waitqueue_head(&priv->wait_command_queue);
7990
7991         INIT_WORK(&priv->up, iwl3945_bg_up);
7992         INIT_WORK(&priv->restart, iwl3945_bg_restart);
7993         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7994         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7995         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7996         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7997         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7998         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7999         INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
8000         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
8001         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
8002         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
8003
8004         iwl3945_hw_setup_deferred_work(priv);
8005
8006         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8007                      iwl3945_irq_tasklet, (unsigned long)priv);
8008 }
8009
8010 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
8011 {
8012         iwl3945_hw_cancel_deferred_work(priv);
8013
8014         cancel_delayed_work_sync(&priv->init_alive_start);
8015         cancel_delayed_work(&priv->scan_check);
8016         cancel_delayed_work(&priv->alive_start);
8017         cancel_delayed_work(&priv->post_associate);
8018         cancel_work_sync(&priv->beacon_update);
8019 }
8020
8021 static struct attribute *iwl3945_sysfs_entries[] = {
8022         &dev_attr_antenna.attr,
8023         &dev_attr_channels.attr,
8024         &dev_attr_dump_errors.attr,
8025         &dev_attr_dump_events.attr,
8026         &dev_attr_flags.attr,
8027         &dev_attr_filter_flags.attr,
8028 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
8029         &dev_attr_measurement.attr,
8030 #endif
8031         &dev_attr_power_level.attr,
8032         &dev_attr_retry_rate.attr,
8033         &dev_attr_rf_kill.attr,
8034         &dev_attr_rs_window.attr,
8035         &dev_attr_statistics.attr,
8036         &dev_attr_status.attr,
8037         &dev_attr_temperature.attr,
8038         &dev_attr_tx_power.attr,
8039
8040         NULL
8041 };
8042
8043 static struct attribute_group iwl3945_attribute_group = {
8044         .name = NULL,           /* put in device directory */
8045         .attrs = iwl3945_sysfs_entries,
8046 };
8047
8048 static struct ieee80211_ops iwl3945_hw_ops = {
8049         .tx = iwl3945_mac_tx,
8050         .start = iwl3945_mac_start,
8051         .stop = iwl3945_mac_stop,
8052         .add_interface = iwl3945_mac_add_interface,
8053         .remove_interface = iwl3945_mac_remove_interface,
8054         .config = iwl3945_mac_config,
8055         .config_interface = iwl3945_mac_config_interface,
8056         .configure_filter = iwl3945_configure_filter,
8057         .set_key = iwl3945_mac_set_key,
8058         .get_stats = iwl3945_mac_get_stats,
8059         .get_tx_stats = iwl3945_mac_get_tx_stats,
8060         .conf_tx = iwl3945_mac_conf_tx,
8061         .get_tsf = iwl3945_mac_get_tsf,
8062         .reset_tsf = iwl3945_mac_reset_tsf,
8063         .beacon_update = iwl3945_mac_beacon_update,
8064         .hw_scan = iwl3945_mac_hw_scan
8065 };
8066
8067 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8068 {
8069         int err = 0;
8070         u32 pci_id;
8071         struct iwl3945_priv *priv;
8072         struct ieee80211_hw *hw;
8073         int i;
8074         DECLARE_MAC_BUF(mac);
8075
8076         /* Disabling hardware scan means that mac80211 will perform scans
8077          * "the hard way", rather than using device's scan. */
8078         if (iwl3945_param_disable_hw_scan) {
8079                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8080                 iwl3945_hw_ops.hw_scan = NULL;
8081         }
8082
8083         if ((iwl3945_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8084             (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8085                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8086                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8087                 err = -EINVAL;
8088                 goto out;
8089         }
8090
8091         /* mac80211 allocates memory for this device instance, including
8092          *   space for this driver's private structure */
8093         hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
8094         if (hw == NULL) {
8095                 IWL_ERROR("Can not allocate network device\n");
8096                 err = -ENOMEM;
8097                 goto out;
8098         }
8099         SET_IEEE80211_DEV(hw, &pdev->dev);
8100
8101         hw->rate_control_algorithm = "iwl-3945-rs";
8102
8103         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8104         priv = hw->priv;
8105         priv->hw = hw;
8106
8107         priv->pci_dev = pdev;
8108
8109         /* Select antenna (may be helpful if only one antenna is connected) */
8110         priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
8111 #ifdef CONFIG_IWL3945_DEBUG
8112         iwl3945_debug_level = iwl3945_param_debug;
8113         atomic_set(&priv->restrict_refcnt, 0);
8114 #endif
8115         priv->retry_rate = 1;
8116
8117         priv->ibss_beacon = NULL;
8118
8119         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8120          *   the range of signal quality values that we'll provide.
8121          * Negative values for level/noise indicate that we'll provide dBm.
8122          * For WE, at least, non-0 values here *enable* display of values
8123          *   in app (iwconfig). */
8124         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
8125         hw->max_noise = -20;    /* noise level, negative indicates dBm */
8126         hw->max_signal = 100;   /* link quality indication (%) */
8127
8128         /* Tell mac80211 our Tx characteristics */
8129         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8130
8131         /* 4 EDCA QOS priorities */
8132         hw->queues = 4;
8133
8134         spin_lock_init(&priv->lock);
8135         spin_lock_init(&priv->power_data.lock);
8136         spin_lock_init(&priv->sta_lock);
8137         spin_lock_init(&priv->hcmd_lock);
8138
8139         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8140                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8141
8142         INIT_LIST_HEAD(&priv->free_frames);
8143
8144         mutex_init(&priv->mutex);
8145         if (pci_enable_device(pdev)) {
8146                 err = -ENODEV;
8147                 goto out_ieee80211_free_hw;
8148         }
8149
8150         pci_set_master(pdev);
8151
8152         /* Clear the driver's (not device's) station table */
8153         iwl3945_clear_stations_table(priv);
8154
8155         priv->data_retry_limit = -1;
8156         priv->ieee_channels = NULL;
8157         priv->ieee_rates = NULL;
8158         priv->band = IEEE80211_BAND_2GHZ;
8159
8160         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8161         if (!err)
8162                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8163         if (err) {
8164                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8165                 goto out_pci_disable_device;
8166         }
8167
8168         pci_set_drvdata(pdev, priv);
8169         err = pci_request_regions(pdev, DRV_NAME);
8170         if (err)
8171                 goto out_pci_disable_device;
8172
8173         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8174          * PCI Tx retries from interfering with C3 CPU state */
8175         pci_write_config_byte(pdev, 0x41, 0x00);
8176
8177         priv->hw_base = pci_iomap(pdev, 0, 0);
8178         if (!priv->hw_base) {
8179                 err = -ENODEV;
8180                 goto out_pci_release_regions;
8181         }
8182
8183         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8184                         (unsigned long long) pci_resource_len(pdev, 0));
8185         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8186
8187         /* Initialize module parameter values here */
8188
8189         /* Disable radio (SW RF KILL) via parameter when loading driver */
8190         if (iwl3945_param_disable) {
8191                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8192                 IWL_DEBUG_INFO("Radio disabled.\n");
8193         }
8194
8195         priv->iw_mode = IEEE80211_IF_TYPE_STA;
8196
8197         pci_id =
8198             (priv->pci_dev->device << 16) | priv->pci_dev->subsystem_device;
8199
8200         switch (pci_id) {
8201         case 0x42221005:        /* 0x4222 0x8086 0x1005 is BG SKU */
8202         case 0x42221034:        /* 0x4222 0x8086 0x1034 is BG SKU */
8203         case 0x42271014:        /* 0x4227 0x8086 0x1014 is BG SKU */
8204         case 0x42221044:        /* 0x4222 0x8086 0x1044 is BG SKU */
8205                 priv->is_abg = 0;
8206                 break;
8207
8208         /*
8209          * Rest are assumed ABG SKU -- if this is not the
8210          * case then the card will get the wrong 'Detected'
8211          * line in the kernel log however the code that
8212          * initializes the GEO table will detect no A-band
8213          * channels and remove the is_abg mask.
8214          */
8215         default:
8216                 priv->is_abg = 1;
8217                 break;
8218         }
8219
8220         printk(KERN_INFO DRV_NAME
8221                ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n",
8222                priv->is_abg ? "A" : "");
8223
8224         /* Device-specific setup */
8225         if (iwl3945_hw_set_hw_setting(priv)) {
8226                 IWL_ERROR("failed to set hw settings\n");
8227                 goto out_iounmap;
8228         }
8229
8230         if (iwl3945_param_qos_enable)
8231                 priv->qos_data.qos_enable = 1;
8232
8233         iwl3945_reset_qos(priv);
8234
8235         priv->qos_data.qos_active = 0;
8236         priv->qos_data.qos_cap.val = 0;
8237
8238         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8239         iwl3945_setup_deferred_work(priv);
8240         iwl3945_setup_rx_handlers(priv);
8241
8242         priv->rates_mask = IWL_RATES_MASK;
8243         /* If power management is turned on, default to AC mode */
8244         priv->power_mode = IWL_POWER_AC;
8245         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8246
8247         iwl3945_disable_interrupts(priv);
8248
8249         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8250         if (err) {
8251                 IWL_ERROR("failed to create sysfs device attributes\n");
8252                 goto out_release_irq;
8253         }
8254
8255         /* nic init */
8256         iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8257                     CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8258
8259         iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8260         err = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
8261                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8262                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8263         if (err < 0) {
8264                 IWL_DEBUG_INFO("Failed to init the card\n");
8265                 goto out_remove_sysfs;
8266         }
8267         /* Read the EEPROM */
8268         err = iwl3945_eeprom_init(priv);
8269         if (err) {
8270                 IWL_ERROR("Unable to init EEPROM\n");
8271                 goto out_remove_sysfs;
8272         }
8273         /* MAC Address location in EEPROM same for 3945/4965 */
8274         get_eeprom_mac(priv, priv->mac_addr);
8275         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8276         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8277
8278         err = iwl3945_init_channel_map(priv);
8279         if (err) {
8280                 IWL_ERROR("initializing regulatory failed: %d\n", err);
8281                 goto out_remove_sysfs;
8282         }
8283
8284         err = iwl3945_init_geos(priv);
8285         if (err) {
8286                 IWL_ERROR("initializing geos failed: %d\n", err);
8287                 goto out_free_channel_map;
8288         }
8289
8290         iwl3945_rate_control_register(priv->hw);
8291         err = ieee80211_register_hw(priv->hw);
8292         if (err) {
8293                 IWL_ERROR("Failed to register network device (error %d)\n", err);
8294                 goto out_free_geos;
8295         }
8296
8297         priv->hw->conf.beacon_int = 100;
8298         priv->mac80211_registered = 1;
8299         pci_save_state(pdev);
8300         pci_disable_device(pdev);
8301
8302         return 0;
8303
8304  out_free_geos:
8305         iwl3945_free_geos(priv);
8306  out_free_channel_map:
8307         iwl3945_free_channel_map(priv);
8308  out_remove_sysfs:
8309         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8310
8311  out_release_irq:
8312         destroy_workqueue(priv->workqueue);
8313         priv->workqueue = NULL;
8314         iwl3945_unset_hw_setting(priv);
8315
8316  out_iounmap:
8317         pci_iounmap(pdev, priv->hw_base);
8318  out_pci_release_regions:
8319         pci_release_regions(pdev);
8320  out_pci_disable_device:
8321         pci_disable_device(pdev);
8322         pci_set_drvdata(pdev, NULL);
8323  out_ieee80211_free_hw:
8324         ieee80211_free_hw(priv->hw);
8325  out:
8326         return err;
8327 }
8328
8329 static void iwl3945_pci_remove(struct pci_dev *pdev)
8330 {
8331         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8332         struct list_head *p, *q;
8333         int i;
8334
8335         if (!priv)
8336                 return;
8337
8338         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8339
8340         set_bit(STATUS_EXIT_PENDING, &priv->status);
8341
8342         iwl3945_down(priv);
8343
8344         /* Free MAC hash list for ADHOC */
8345         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8346                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8347                         list_del(p);
8348                         kfree(list_entry(p, struct iwl3945_ibss_seq, list));
8349                 }
8350         }
8351
8352         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8353
8354         iwl3945_dealloc_ucode_pci(priv);
8355
8356         if (priv->rxq.bd)
8357                 iwl3945_rx_queue_free(priv, &priv->rxq);
8358         iwl3945_hw_txq_ctx_free(priv);
8359
8360         iwl3945_unset_hw_setting(priv);
8361         iwl3945_clear_stations_table(priv);
8362
8363         if (priv->mac80211_registered) {
8364                 ieee80211_unregister_hw(priv->hw);
8365                 iwl3945_rate_control_unregister(priv->hw);
8366         }
8367
8368         /*netif_stop_queue(dev); */
8369         flush_workqueue(priv->workqueue);
8370
8371         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8372          * priv->workqueue... so we can't take down the workqueue
8373          * until now... */
8374         destroy_workqueue(priv->workqueue);
8375         priv->workqueue = NULL;
8376
8377         pci_iounmap(pdev, priv->hw_base);
8378         pci_release_regions(pdev);
8379         pci_disable_device(pdev);
8380         pci_set_drvdata(pdev, NULL);
8381
8382         iwl3945_free_channel_map(priv);
8383         iwl3945_free_geos(priv);
8384
8385         if (priv->ibss_beacon)
8386                 dev_kfree_skb(priv->ibss_beacon);
8387
8388         ieee80211_free_hw(priv->hw);
8389 }
8390
8391 #ifdef CONFIG_PM
8392
8393 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8394 {
8395         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8396
8397         if (priv->is_open) {
8398                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8399                 iwl3945_mac_stop(priv->hw);
8400                 priv->is_open = 1;
8401         }
8402
8403         pci_set_power_state(pdev, PCI_D3hot);
8404
8405         return 0;
8406 }
8407
8408 static int iwl3945_pci_resume(struct pci_dev *pdev)
8409 {
8410         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8411
8412         pci_set_power_state(pdev, PCI_D0);
8413
8414         if (priv->is_open)
8415                 iwl3945_mac_start(priv->hw);
8416
8417         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8418         return 0;
8419 }
8420
8421 #endif /* CONFIG_PM */
8422
8423 /*****************************************************************************
8424  *
8425  * driver and module entry point
8426  *
8427  *****************************************************************************/
8428
8429 static struct pci_driver iwl3945_driver = {
8430         .name = DRV_NAME,
8431         .id_table = iwl3945_hw_card_ids,
8432         .probe = iwl3945_pci_probe,
8433         .remove = __devexit_p(iwl3945_pci_remove),
8434 #ifdef CONFIG_PM
8435         .suspend = iwl3945_pci_suspend,
8436         .resume = iwl3945_pci_resume,
8437 #endif
8438 };
8439
8440 static int __init iwl3945_init(void)
8441 {
8442
8443         int ret;
8444         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8445         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8446         ret = pci_register_driver(&iwl3945_driver);
8447         if (ret) {
8448                 IWL_ERROR("Unable to initialize PCI module\n");
8449                 return ret;
8450         }
8451 #ifdef CONFIG_IWL3945_DEBUG
8452         ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8453         if (ret) {
8454                 IWL_ERROR("Unable to create driver sysfs file\n");
8455                 pci_unregister_driver(&iwl3945_driver);
8456                 return ret;
8457         }
8458 #endif
8459
8460         return ret;
8461 }
8462
8463 static void __exit iwl3945_exit(void)
8464 {
8465 #ifdef CONFIG_IWL3945_DEBUG
8466         driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8467 #endif
8468         pci_unregister_driver(&iwl3945_driver);
8469 }
8470
8471 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8472 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8473 module_param_named(disable, iwl3945_param_disable, int, 0444);
8474 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8475 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8476 MODULE_PARM_DESC(hwcrypto,
8477                  "using hardware crypto engine (default 0 [software])\n");
8478 module_param_named(debug, iwl3945_param_debug, int, 0444);
8479 MODULE_PARM_DESC(debug, "debug output mask");
8480 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8481 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8482
8483 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8484 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8485
8486 /* QoS */
8487 module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
8488 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8489
8490 module_exit(iwl3945_exit);
8491 module_init(iwl3945_init);