git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl3945-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/ieee80211_radiotap.h>
  45 #include <net/mac80211.h>
  46
  47 #include <asm/div64.h>
  48
  49 #include "iwl-3945-core.h"
  50 #include "iwl-3945.h"
  51 #include "iwl-helpers.h"
  52
  53 #ifdef CONFIG_IWL3945_DEBUG
  54 u32 iwl3945_debug_level;
  55 #endif
  56
  57 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
  58                                   struct iwl3945_tx_queue *txq);
  59
  60 /******************************************************************************
  61  *
  62  * module boiler plate
  63  *
  64  ******************************************************************************/
  65
  66 /* module parameters */
  67 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
  68 static int iwl3945_param_debug;    /* def: 0 = minimal debug log messages */
  69 static int iwl3945_param_disable;  /* def: 0 = enable radio */
  70 static int iwl3945_param_antenna;  /* def: 0 = both antennas (use diversity) */
  71 int iwl3945_param_hwcrypto;        /* def: 0 = use software encryption */
  72 static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
  73 int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
  74
  75 /*
  76  * module name, copyright, version, etc.
  77  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  78  */
  79
  80 #define DRV_DESCRIPTION \
  81 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  82
  83 #ifdef CONFIG_IWL3945_DEBUG
  84 #define VD "d"
  85 #else
  86 #define VD
  87 #endif
  88
  89 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  90 #define VS "s"
  91 #else
  92 #define VS
  93 #endif
  94
  95 #define IWLWIFI_VERSION "1.2.26k" VD VS
  96 #define DRV_COPYRIGHT   "Copyright(c) 2003-2008 Intel Corporation"
  97 #define DRV_VERSION     IWLWIFI_VERSION
  98
  99
 100 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 101 MODULE_VERSION(DRV_VERSION);
 102 MODULE_AUTHOR(DRV_COPYRIGHT);
 103 MODULE_LICENSE("GPL");
 104
 105 static const struct ieee80211_supported_band *iwl3945_get_band(
 106                 struct iwl3945_priv *priv, enum ieee80211_band band)
 107 {
 108         return priv->hw->wiphy->bands[band];
 109 }
 110
 111 static int iwl3945_is_empty_essid(const char *essid, int essid_len)
 112 {
 113         /* Single white space is for Linksys APs */
 114         if (essid_len == 1 && essid[0] == ' ')
 115                 return 1;
 116
 117         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 118         while (essid_len) {
 119                 essid_len--;
 120                 if (essid[essid_len] != '\0')
 121                         return 0;
 122         }
 123
 124         return 1;
 125 }
 126
 127 static const char *iwl3945_escape_essid(const char *essid, u8 essid_len)
 128 {
 129         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 130         const char *s = essid;
 131         char *d = escaped;
 132
 133         if (iwl3945_is_empty_essid(essid, essid_len)) {
 134                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 135                 return escaped;
 136         }
 137
 138         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 139         while (essid_len--) {
 140                 if (*s == '\0') {
 141                         *d++ = '\\';
 142                         *d++ = '0';
 143                         s++;
 144                 } else
 145                         *d++ = *s++;
 146         }
 147         *d = '\0';
 148         return escaped;
 149 }
 150
 151 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 152  * DMA services
 153  *
 154  * Theory of operation
 155  *
 156  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 157  * of buffer descriptors, each of which points to one or more data buffers for
 158  * the device to read from or fill.  Driver and device exchange status of each
 159  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 160  * entries in each circular buffer, to protect against confusing empty and full
 161  * queue states.
 162  *
 163  * The device reads or writes the data in the queues via the device's several
 164  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 165  *
 166  * For Tx queue, there are low mark and high mark limits. If, after queuing
 167  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 168  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 169  * Tx queue resumed.
 170  *
 171  * The 3945 operates with six queues:  One receive queue, one transmit queue
 172  * (#4) for sending commands to the device firmware, and four transmit queues
 173  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 174  ***************************************************/
 175
 176 int iwl3945_queue_space(const struct iwl3945_queue *q)
 177 {
 178         int s = q->read_ptr - q->write_ptr;
 179
 180         if (q->read_ptr > q->write_ptr)
 181                 s -= q->n_bd;
 182
 183         if (s <= 0)
 184                 s += q->n_window;
 185         /* keep some reserve to not confuse empty and full situations */
 186         s -= 2;
 187         if (s < 0)
 188                 s = 0;
 189         return s;
 190 }
 191
 192 int iwl3945_x2_queue_used(const struct iwl3945_queue *q, int i)
 193 {
 194         return q->write_ptr > q->read_ptr ?
 195                 (i >= q->read_ptr && i < q->write_ptr) :
 196                 !(i < q->read_ptr && i >= q->write_ptr);
 197 }
 198
 199
 200 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
 201 {
 202         /* This is for scan command, the big buffer at end of command array */
 203         if (is_huge)
 204                 return q->n_window;     /* must be power of 2 */
 205
 206         /* Otherwise, use normal size buffers */
 207         return index & (q->n_window - 1);
 208 }
 209
 210 /**
 211  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 212  */
 213 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
 214                           int count, int slots_num, u32 id)
 215 {
 216         q->n_bd = count;
 217         q->n_window = slots_num;
 218         q->id = id;
 219
 220         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 221          * and iwl_queue_dec_wrap are broken. */
 222         BUG_ON(!is_power_of_2(count));
 223
 224         /* slots_num must be power-of-two size, otherwise
 225          * get_cmd_index is broken. */
 226         BUG_ON(!is_power_of_2(slots_num));
 227
 228         q->low_mark = q->n_window / 4;
 229         if (q->low_mark < 4)
 230                 q->low_mark = 4;
 231
 232         q->high_mark = q->n_window / 8;
 233         if (q->high_mark < 2)
 234                 q->high_mark = 2;
 235
 236         q->write_ptr = q->read_ptr = 0;
 237
 238         return 0;
 239 }
 240
 241 /**
 242  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 243  */
 244 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
 245                               struct iwl3945_tx_queue *txq, u32 id)
 246 {
 247         struct pci_dev *dev = priv->pci_dev;
 248
 249         /* Driver private data, only for Tx (not command) queues,
 250          * not shared with device. */
 251         if (id != IWL_CMD_QUEUE_NUM) {
 252                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 253                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 254                 if (!txq->txb) {
 255                         IWL_ERROR("kmalloc for auxiliary BD "
 256                                   "structures failed\n");
 257                         goto error;
 258                 }
 259         } else
 260                 txq->txb = NULL;
 261
 262         /* Circular buffer of transmit frame descriptors (TFDs),
 263          * shared with device */
 264         txq->bd = pci_alloc_consistent(dev,
 265                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 266                         &txq->q.dma_addr);
 267
 268         if (!txq->bd) {
 269                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 270                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 271                 goto error;
 272         }
 273         txq->q.id = id;
 274
 275         return 0;
 276
 277  error:
 278         if (txq->txb) {
 279                 kfree(txq->txb);
 280                 txq->txb = NULL;
 281         }
 282
 283         return -ENOMEM;
 284 }
 285
 286 /**
 287  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 288  */
 289 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
 290                       struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
 291 {
 292         struct pci_dev *dev = priv->pci_dev;
 293         int len;
 294         int rc = 0;
 295
 296         /*
 297          * Alloc buffer array for commands (Tx or other types of commands).
 298          * For the command queue (#4), allocate command space + one big
 299          * command for scan, since scan command is very huge; the system will
 300          * not have two scans at the same time, so only one is needed.
 301          * For data Tx queues (all other queues), no super-size command
 302          * space is needed.
 303          */
 304         len = sizeof(struct iwl3945_cmd) * slots_num;
 305         if (txq_id == IWL_CMD_QUEUE_NUM)
 306                 len +=  IWL_MAX_SCAN_SIZE;
 307         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 308         if (!txq->cmd)
 309                 return -ENOMEM;
 310
 311         /* Alloc driver data array and TFD circular buffer */
 312         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 313         if (rc) {
 314                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 315
 316                 return -ENOMEM;
 317         }
 318         txq->need_update = 0;
 319
 320         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 321          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 322         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 323
 324         /* Initialize queue high/low-water, head/tail indexes */
 325         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 326
 327         /* Tell device where to find queue, enable DMA channel. */
 328         iwl3945_hw_tx_queue_init(priv, txq);
 329
 330         return 0;
 331 }
 332
 333 /**
 334  * iwl3945_tx_queue_free - Deallocate DMA queue.
 335  * @txq: Transmit queue to deallocate.
 336  *
 337  * Empty queue by removing and destroying all BD's.
 338  * Free all buffers.
 339  * 0-fill, but do not free "txq" descriptor structure.
 340  */
 341 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
 342 {
 343         struct iwl3945_queue *q = &txq->q;
 344         struct pci_dev *dev = priv->pci_dev;
 345         int len;
 346
 347         if (q->n_bd == 0)
 348                 return;
 349
 350         /* first, empty all BD's */
 351         for (; q->write_ptr != q->read_ptr;
 352              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 353                 iwl3945_hw_txq_free_tfd(priv, txq);
 354
 355         len = sizeof(struct iwl3945_cmd) * q->n_window;
 356         if (q->id == IWL_CMD_QUEUE_NUM)
 357                 len += IWL_MAX_SCAN_SIZE;
 358
 359         /* De-alloc array of command/tx buffers */
 360         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 361
 362         /* De-alloc circular buffer of TFDs */
 363         if (txq->q.n_bd)
 364                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
 365                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 366
 367         /* De-alloc array of per-TFD driver data */
 368         if (txq->txb) {
 369                 kfree(txq->txb);
 370                 txq->txb = NULL;
 371         }
 372
 373         /* 0-fill queue descriptor structure */
 374         memset(txq, 0, sizeof(*txq));
 375 }
 376
 377 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 378
 379 /*************** STATION TABLE MANAGEMENT ****
 380  * mac80211 should be examined to determine if sta_info is duplicating
 381  * the functionality provided here
 382  */
 383
 384 /**************************************************************/
 385 #if 0 /* temporary disable till we add real remove station */
 386 /**
 387  * iwl3945_remove_station - Remove driver's knowledge of station.
 388  *
 389  * NOTE:  This does not remove station from device's station table.
 390  */
 391 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
 392 {
 393         int index = IWL_INVALID_STATION;
 394         int i;
 395         unsigned long flags;
 396
 397         spin_lock_irqsave(&priv->sta_lock, flags);
 398
 399         if (is_ap)
 400                 index = IWL_AP_ID;
 401         else if (is_broadcast_ether_addr(addr))
 402                 index = priv->hw_setting.bcast_sta_id;
 403         else
 404                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 405                         if (priv->stations[i].used &&
 406                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 407                                                 addr)) {
 408                                 index = i;
 409                                 break;
 410                         }
 411
 412         if (unlikely(index == IWL_INVALID_STATION))
 413                 goto out;
 414
 415         if (priv->stations[index].used) {
 416                 priv->stations[index].used = 0;
 417                 priv->num_stations--;
 418         }
 419
 420         BUG_ON(priv->num_stations < 0);
 421
 422 out:
 423         spin_unlock_irqrestore(&priv->sta_lock, flags);
 424         return 0;
 425 }
 426 #endif
 427
 428 /**
 429  * iwl3945_clear_stations_table - Clear the driver's station table
 430  *
 431  * NOTE:  This does not clear or otherwise alter the device's station table.
 432  */
 433 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
 434 {
 435         unsigned long flags;
 436
 437         spin_lock_irqsave(&priv->sta_lock, flags);
 438
 439         priv->num_stations = 0;
 440         memset(priv->stations, 0, sizeof(priv->stations));
 441
 442         spin_unlock_irqrestore(&priv->sta_lock, flags);
 443 }
 444
 445 /**
 446  * iwl3945_add_station - Add station to station tables in driver and device
 447  */
 448 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
 449 {
 450         int i;
 451         int index = IWL_INVALID_STATION;
 452         struct iwl3945_station_entry *station;
 453         unsigned long flags_spin;
 454         DECLARE_MAC_BUF(mac);
 455         u8 rate;
 456
 457         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 458         if (is_ap)
 459                 index = IWL_AP_ID;
 460         else if (is_broadcast_ether_addr(addr))
 461                 index = priv->hw_setting.bcast_sta_id;
 462         else
 463                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 464                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 465                                                 addr)) {
 466                                 index = i;
 467                                 break;
 468                         }
 469
 470                         if (!priv->stations[i].used &&
 471                             index == IWL_INVALID_STATION)
 472                                 index = i;
 473                 }
 474
 475         /* These two conditions has the same outcome but keep them separate
 476           since they have different meaning */
 477         if (unlikely(index == IWL_INVALID_STATION)) {
 478                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 479                 return index;
 480         }
 481
 482         if (priv->stations[index].used &&
 483            !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 484                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 485                 return index;
 486         }
 487
 488         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 489         station = &priv->stations[index];
 490         station->used = 1;
 491         priv->num_stations++;
 492
 493         /* Set up the REPLY_ADD_STA command to send to device */
 494         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 495         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 496         station->sta.mode = 0;
 497         station->sta.sta.sta_id = index;
 498         station->sta.station_flags = 0;
 499
 500         if (priv->band == IEEE80211_BAND_5GHZ)
 501                 rate = IWL_RATE_6M_PLCP;
 502         else
 503                 rate =  IWL_RATE_1M_PLCP;
 504
 505         /* Turn on both antennas for the station... */
 506         station->sta.rate_n_flags =
 507                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 508         station->current_rate.rate_n_flags =
 509                         le16_to_cpu(station->sta.rate_n_flags);
 510
 511         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 512
 513         /* Add station to device's station table */
 514         iwl3945_send_add_station(priv, &station->sta, flags);
 515         return index;
 516
 517 }
 518
 519 /*************** DRIVER STATUS FUNCTIONS   *****/
 520
 521 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
 522 {
 523         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 524          * set but EXIT_PENDING is not */
 525         return test_bit(STATUS_READY, &priv->status) &&
 526                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 527                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 528 }
 529
 530 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
 531 {
 532         return test_bit(STATUS_ALIVE, &priv->status);
 533 }
 534
 535 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
 536 {
 537         return test_bit(STATUS_INIT, &priv->status);
 538 }
 539
 540 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
 541 {
 542         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 543                test_bit(STATUS_RF_KILL_SW, &priv->status);
 544 }
 545
 546 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
 547 {
 548
 549         if (iwl3945_is_rfkill(priv))
 550                 return 0;
 551
 552         return iwl3945_is_ready(priv);
 553 }
 554
 555 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 556
 557 #define IWL_CMD(x) case x : return #x
 558
 559 static const char *get_cmd_string(u8 cmd)
 560 {
 561         switch (cmd) {
 562                 IWL_CMD(REPLY_ALIVE);
 563                 IWL_CMD(REPLY_ERROR);
 564                 IWL_CMD(REPLY_RXON);
 565                 IWL_CMD(REPLY_RXON_ASSOC);
 566                 IWL_CMD(REPLY_QOS_PARAM);
 567                 IWL_CMD(REPLY_RXON_TIMING);
 568                 IWL_CMD(REPLY_ADD_STA);
 569                 IWL_CMD(REPLY_REMOVE_STA);
 570                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 571                 IWL_CMD(REPLY_3945_RX);
 572                 IWL_CMD(REPLY_TX);
 573                 IWL_CMD(REPLY_RATE_SCALE);
 574                 IWL_CMD(REPLY_LEDS_CMD);
 575                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 576                 IWL_CMD(RADAR_NOTIFICATION);
 577                 IWL_CMD(REPLY_QUIET_CMD);
 578                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 579                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 580                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 581                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 582                 IWL_CMD(POWER_TABLE_CMD);
 583                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 584                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 585                 IWL_CMD(REPLY_SCAN_CMD);
 586                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 587                 IWL_CMD(SCAN_START_NOTIFICATION);
 588                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 589                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 590                 IWL_CMD(BEACON_NOTIFICATION);
 591                 IWL_CMD(REPLY_TX_BEACON);
 592                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 593                 IWL_CMD(QUIET_NOTIFICATION);
 594                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 595                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 596                 IWL_CMD(REPLY_BT_CONFIG);
 597                 IWL_CMD(REPLY_STATISTICS_CMD);
 598                 IWL_CMD(STATISTICS_NOTIFICATION);
 599                 IWL_CMD(REPLY_CARD_STATE_CMD);
 600                 IWL_CMD(CARD_STATE_NOTIFICATION);
 601                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 602         default:
 603                 return "UNKNOWN";
 604
 605         }
 606 }
 607
 608 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 609
 610 /**
 611  * iwl3945_enqueue_hcmd - enqueue a uCode command
 612  * @priv: device private data point
 613  * @cmd: a point to the ucode command structure
 614  *
 615  * The function returns < 0 values to indicate the operation is
 616  * failed. On success, it turns the index (> 0) of command in the
 617  * command queue.
 618  */
 619 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 620 {
 621         struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 622         struct iwl3945_queue *q = &txq->q;
 623         struct iwl3945_tfd_frame *tfd;
 624         u32 *control_flags;
 625         struct iwl3945_cmd *out_cmd;
 626         u32 idx;
 627         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 628         dma_addr_t phys_addr;
 629         int pad;
 630         u16 count;
 631         int ret;
 632         unsigned long flags;
 633
 634         /* If any of the command structures end up being larger than
 635          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 636          * we will need to increase the size of the TFD entries */
 637         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 638                !(cmd->meta.flags & CMD_SIZE_HUGE));
 639
 640
 641         if (iwl3945_is_rfkill(priv)) {
 642                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 643                 return -EIO;
 644         }
 645
 646         if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 647                 IWL_ERROR("No space for Tx\n");
 648                 return -ENOSPC;
 649         }
 650
 651         spin_lock_irqsave(&priv->hcmd_lock, flags);
 652
 653         tfd = &txq->bd[q->write_ptr];
 654         memset(tfd, 0, sizeof(*tfd));
 655
 656         control_flags = (u32 *) tfd;
 657
 658         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 659         out_cmd = &txq->cmd[idx];
 660
 661         out_cmd->hdr.cmd = cmd->id;
 662         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 663         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 664
 665         /* At this point, the out_cmd now has all of the incoming cmd
 666          * information */
 667
 668         out_cmd->hdr.flags = 0;
 669         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 670                         INDEX_TO_SEQ(q->write_ptr));
 671         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 672                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 673
 674         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 675                         offsetof(struct iwl3945_cmd, hdr);
 676         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 677
 678         pad = U32_PAD(cmd->len);
 679         count = TFD_CTL_COUNT_GET(*control_flags);
 680         *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
 681
 682         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 683                      "%d bytes at %d[%d]:%d\n",
 684                      get_cmd_string(out_cmd->hdr.cmd),
 685                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 686                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 687
 688         txq->need_update = 1;
 689
 690         /* Increment and update queue's write index */
 691         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 692         ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
 693
 694         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 695         return ret ? ret : idx;
 696 }
 697
 698 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 699 {
 700         int ret;
 701
 702         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 703
 704         /* An asynchronous command can not expect an SKB to be set. */
 705         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 706
 707         /* An asynchronous command MUST have a callback. */
 708         BUG_ON(!cmd->meta.u.callback);
 709
 710         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 711                 return -EBUSY;
 712
 713         ret = iwl3945_enqueue_hcmd(priv, cmd);
 714         if (ret < 0) {
 715                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 716                           get_cmd_string(cmd->id), ret);
 717                 return ret;
 718         }
 719         return 0;
 720 }
 721
 722 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 723 {
 724         int cmd_idx;
 725         int ret;
 726
 727         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 728
 729          /* A synchronous command can not have a callback set. */
 730         BUG_ON(cmd->meta.u.callback != NULL);
 731
 732         if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
 733                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 734                           get_cmd_string(cmd->id));
 735                 ret = -EBUSY;
 736                 goto out;
 737         }
 738
 739         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 740
 741         if (cmd->meta.flags & CMD_WANT_SKB)
 742                 cmd->meta.source = &cmd->meta;
 743
 744         cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
 745         if (cmd_idx < 0) {
 746                 ret = cmd_idx;
 747                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 748                           get_cmd_string(cmd->id), ret);
 749                 goto out;
 750         }
 751
 752         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 753                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 754                         HOST_COMPLETE_TIMEOUT);
 755         if (!ret) {
 756                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 757                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 758                                   get_cmd_string(cmd->id),
 759                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 760
 761                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 762                         ret = -ETIMEDOUT;
 763                         goto cancel;
 764                 }
 765         }
 766
 767         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 768                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 769                                get_cmd_string(cmd->id));
 770                 ret = -ECANCELED;
 771                 goto fail;
 772         }
 773         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 774                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 775                                get_cmd_string(cmd->id));
 776                 ret = -EIO;
 777                 goto fail;
 778         }
 779         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 780                 IWL_ERROR("Error: Response NULL in '%s'\n",
 781                           get_cmd_string(cmd->id));
 782                 ret = -EIO;
 783                 goto out;
 784         }
 785
 786         ret = 0;
 787         goto out;
 788
 789 cancel:
 790         if (cmd->meta.flags & CMD_WANT_SKB) {
 791                 struct iwl3945_cmd *qcmd;
 792
 793                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 794                  * TX cmd queue. Otherwise in case the cmd comes
 795                  * in later, it will possibly set an invalid
 796                  * address (cmd->meta.source). */
 797                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 798                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 799         }
 800 fail:
 801         if (cmd->meta.u.skb) {
 802                 dev_kfree_skb_any(cmd->meta.u.skb);
 803                 cmd->meta.u.skb = NULL;
 804         }
 805 out:
 806         clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
 807         return ret;
 808 }
 809
 810 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 811 {
 812         if (cmd->meta.flags & CMD_ASYNC)
 813                 return iwl3945_send_cmd_async(priv, cmd);
 814
 815         return iwl3945_send_cmd_sync(priv, cmd);
 816 }
 817
 818 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
 819 {
 820         struct iwl3945_host_cmd cmd = {
 821                 .id = id,
 822                 .len = len,
 823                 .data = data,
 824         };
 825
 826         return iwl3945_send_cmd_sync(priv, &cmd);
 827 }
 828
 829 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
 830 {
 831         struct iwl3945_host_cmd cmd = {
 832                 .id = id,
 833                 .len = sizeof(val),
 834                 .data = &val,
 835         };
 836
 837         return iwl3945_send_cmd_sync(priv, &cmd);
 838 }
 839
 840 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
 841 {
 842         return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 843 }
 844
 845 /**
 846  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 847  * @band: 2.4 or 5 GHz band
 848  * @channel: Any channel valid for the requested band
 849
 850  * In addition to setting the staging RXON, priv->band is also set.
 851  *
 852  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 853  * in the staging RXON flag structure based on the band
 854  */
 855 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
 856                                     enum ieee80211_band band,
 857                                     u16 channel)
 858 {
 859         if (!iwl3945_get_channel_info(priv, band, channel)) {
 860                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 861                                channel, band);
 862                 return -EINVAL;
 863         }
 864
 865         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 866             (priv->band == band))
 867                 return 0;
 868
 869         priv->staging_rxon.channel = cpu_to_le16(channel);
 870         if (band == IEEE80211_BAND_5GHZ)
 871                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 872         else
 873                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 874
 875         priv->band = band;
 876
 877         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 878
 879         return 0;
 880 }
 881
 882 /**
 883  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 884  *
 885  * NOTE:  This is really only useful during development and can eventually
 886  * be #ifdef'd out once the driver is stable and folks aren't actively
 887  * making changes
 888  */
 889 static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
 890 {
 891         int error = 0;
 892         int counter = 1;
 893
 894         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 895                 error |= le32_to_cpu(rxon->flags &
 896                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 897                                  RXON_FLG_RADAR_DETECT_MSK));
 898                 if (error)
 899                         IWL_WARNING("check 24G fields %d | %d\n",
 900                                     counter++, error);
 901         } else {
 902                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 903                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 904                 if (error)
 905                         IWL_WARNING("check 52 fields %d | %d\n",
 906                                     counter++, error);
 907                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 908                 if (error)
 909                         IWL_WARNING("check 52 CCK %d | %d\n",
 910                                     counter++, error);
 911         }
 912         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 913         if (error)
 914                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 915
 916         /* make sure basic rates 6Mbps and 1Mbps are supported */
 917         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 918                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 919         if (error)
 920                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 921
 922         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 923         if (error)
 924                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 925
 926         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 927                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 928         if (error)
 929                 IWL_WARNING("check CCK and short slot %d | %d\n",
 930                             counter++, error);
 931
 932         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 933                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 934         if (error)
 935                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 936                             counter++, error);
 937
 938         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 939                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 940         if (error)
 941                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 942                             counter++, error);
 943
 944         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 945                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 946                                 RXON_FLG_ANT_A_MSK)) == 0);
 947         if (error)
 948                 IWL_WARNING("check antenna %d %d\n", counter++, error);
 949
 950         if (error)
 951                 IWL_WARNING("Tuning to channel %d\n",
 952                             le16_to_cpu(rxon->channel));
 953
 954         if (error) {
 955                 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
 956                 return -1;
 957         }
 958         return 0;
 959 }
 960
 961 /**
 962  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 963  * @priv: staging_rxon is compared to active_rxon
 964  *
 965  * If the RXON structure is changing enough to require a new tune,
 966  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 967  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 968  */
 969 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
 970 {
 971
 972         /* These items are only settable from the full RXON command */
 973         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 974             compare_ether_addr(priv->staging_rxon.bssid_addr,
 975                                priv->active_rxon.bssid_addr) ||
 976             compare_ether_addr(priv->staging_rxon.node_addr,
 977                                priv->active_rxon.node_addr) ||
 978             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 979                                priv->active_rxon.wlap_bssid_addr) ||
 980             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 981             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 982             (priv->staging_rxon.air_propagation !=
 983              priv->active_rxon.air_propagation) ||
 984             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 985                 return 1;
 986
 987         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 988          * be updated with the RXON_ASSOC command -- however only some
 989          * flag transitions are allowed using RXON_ASSOC */
 990
 991         /* Check if we are not switching bands */
 992         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 993             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 994                 return 1;
 995
 996         /* Check if we are switching association toggle */
 997         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 998                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 999                 return 1;
1000
1001         return 0;
1002 }
1003
1004 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
1005 {
1006         int rc = 0;
1007         struct iwl3945_rx_packet *res = NULL;
1008         struct iwl3945_rxon_assoc_cmd rxon_assoc;
1009         struct iwl3945_host_cmd cmd = {
1010                 .id = REPLY_RXON_ASSOC,
1011                 .len = sizeof(rxon_assoc),
1012                 .meta.flags = CMD_WANT_SKB,
1013                 .data = &rxon_assoc,
1014         };
1015         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
1016         const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
1017
1018         if ((rxon1->flags == rxon2->flags) &&
1019             (rxon1->filter_flags == rxon2->filter_flags) &&
1020             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1021             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1022                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1023                 return 0;
1024         }
1025
1026         rxon_assoc.flags = priv->staging_rxon.flags;
1027         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1028         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1029         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1030         rxon_assoc.reserved = 0;
1031
1032         rc = iwl3945_send_cmd_sync(priv, &cmd);
1033         if (rc)
1034                 return rc;
1035
1036         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1037         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1038                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1039                 rc = -EIO;
1040         }
1041
1042         priv->alloc_rxb_skb--;
1043         dev_kfree_skb_any(cmd.meta.u.skb);
1044
1045         return rc;
1046 }
1047
1048 /**
1049  * iwl3945_commit_rxon - commit staging_rxon to hardware
1050  *
1051  * The RXON command in staging_rxon is committed to the hardware and
1052  * the active_rxon structure is updated with the new data.  This
1053  * function correctly transitions out of the RXON_ASSOC_MSK state if
1054  * a HW tune is required based on the RXON structure changes.
1055  */
1056 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1057 {
1058         /* cast away the const for active_rxon in this function */
1059         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1060         int rc = 0;
1061         DECLARE_MAC_BUF(mac);
1062
1063         if (!iwl3945_is_alive(priv))
1064                 return -1;
1065
1066         /* always get timestamp with Rx frame */
1067         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1068
1069         /* select antenna */
1070         priv->staging_rxon.flags &=
1071             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1072         priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1073
1074         rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
1075         if (rc) {
1076                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1077                 return -EINVAL;
1078         }
1079
1080         /* If we don't need to send a full RXON, we can use
1081          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1082          * and other flags for the current radio configuration. */
1083         if (!iwl3945_full_rxon_required(priv)) {
1084                 rc = iwl3945_send_rxon_assoc(priv);
1085                 if (rc) {
1086                         IWL_ERROR("Error setting RXON_ASSOC "
1087                                   "configuration (%d).\n", rc);
1088                         return rc;
1089                 }
1090
1091                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1092
1093                 return 0;
1094         }
1095
1096         /* If we are currently associated and the new config requires
1097          * an RXON_ASSOC and the new config wants the associated mask enabled,
1098          * we must clear the associated from the active configuration
1099          * before we apply the new config */
1100         if (iwl3945_is_associated(priv) &&
1101             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1102                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1103                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1104
1105                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1106                                       sizeof(struct iwl3945_rxon_cmd),
1107                                       &priv->active_rxon);
1108
1109                 /* If the mask clearing failed then we set
1110                  * active_rxon back to what it was previously */
1111                 if (rc) {
1112                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1113                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1114                                   "configuration (%d).\n", rc);
1115                         return rc;
1116                 }
1117         }
1118
1119         IWL_DEBUG_INFO("Sending RXON\n"
1120                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1121                        "* channel = %d\n"
1122                        "* bssid = %s\n",
1123                        ((priv->staging_rxon.filter_flags &
1124                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1125                        le16_to_cpu(priv->staging_rxon.channel),
1126                        print_mac(mac, priv->staging_rxon.bssid_addr));
1127
1128         /* Apply the new configuration */
1129         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1130                               sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1131         if (rc) {
1132                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1133                 return rc;
1134         }
1135
1136         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1137
1138         iwl3945_clear_stations_table(priv);
1139
1140         /* If we issue a new RXON command which required a tune then we must
1141          * send a new TXPOWER command or we won't be able to Tx any frames */
1142         rc = iwl3945_hw_reg_send_txpower(priv);
1143         if (rc) {
1144                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1145                 return rc;
1146         }
1147
1148         /* Add the broadcast address so we can send broadcast frames */
1149         if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1150             IWL_INVALID_STATION) {
1151                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1152                 return -EIO;
1153         }
1154
1155         /* If we have set the ASSOC_MSK and we are in BSS mode then
1156          * add the IWL_AP_ID to the station rate table */
1157         if (iwl3945_is_associated(priv) &&
1158             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
1159                 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1160                     == IWL_INVALID_STATION) {
1161                         IWL_ERROR("Error adding AP address for transmit.\n");
1162                         return -EIO;
1163                 }
1164
1165         /* Init the hardware's rate fallback order based on the band */
1166         rc = iwl3945_init_hw_rate_table(priv);
1167         if (rc) {
1168                 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1169                 return -EIO;
1170         }
1171
1172         return 0;
1173 }
1174
1175 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1176 {
1177         struct iwl3945_bt_cmd bt_cmd = {
1178                 .flags = 3,
1179                 .lead_time = 0xAA,
1180                 .max_kill = 1,
1181                 .kill_ack_mask = 0,
1182                 .kill_cts_mask = 0,
1183         };
1184
1185         return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1186                                 sizeof(struct iwl3945_bt_cmd), &bt_cmd);
1187 }
1188
1189 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1190 {
1191         int rc = 0;
1192         struct iwl3945_rx_packet *res;
1193         struct iwl3945_host_cmd cmd = {
1194                 .id = REPLY_SCAN_ABORT_CMD,
1195                 .meta.flags = CMD_WANT_SKB,
1196         };
1197
1198         /* If there isn't a scan actively going on in the hardware
1199          * then we are in between scan bands and not actually
1200          * actively scanning, so don't send the abort command */
1201         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1202                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1203                 return 0;
1204         }
1205
1206         rc = iwl3945_send_cmd_sync(priv, &cmd);
1207         if (rc) {
1208                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1209                 return rc;
1210         }
1211
1212         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1213         if (res->u.status != CAN_ABORT_STATUS) {
1214                 /* The scan abort will return 1 for success or
1215                  * 2 for "failure".  A failure condition can be
1216                  * due to simply not being in an active scan which
1217                  * can occur if we send the scan abort before we
1218                  * the microcode has notified us that a scan is
1219                  * completed. */
1220                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1221                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1222                 clear_bit(STATUS_SCAN_HW, &priv->status);
1223         }
1224
1225         dev_kfree_skb_any(cmd.meta.u.skb);
1226
1227         return rc;
1228 }
1229
1230 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1231                                         struct iwl3945_cmd *cmd,
1232                                         struct sk_buff *skb)
1233 {
1234         return 1;
1235 }
1236
1237 /*
1238  * CARD_STATE_CMD
1239  *
1240  * Use: Sets the device's internal card state to enable, disable, or halt
1241  *
1242  * When in the 'enable' state the card operates as normal.
1243  * When in the 'disable' state, the card enters into a low power mode.
1244  * When in the 'halt' state, the card is shut down and must be fully
1245  * restarted to come back on.
1246  */
1247 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1248 {
1249         struct iwl3945_host_cmd cmd = {
1250                 .id = REPLY_CARD_STATE_CMD,
1251                 .len = sizeof(u32),
1252                 .data = &flags,
1253                 .meta.flags = meta_flag,
1254         };
1255
1256         if (meta_flag & CMD_ASYNC)
1257                 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1258
1259         return iwl3945_send_cmd(priv, &cmd);
1260 }
1261
1262 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1263                                      struct iwl3945_cmd *cmd, struct sk_buff *skb)
1264 {
1265         struct iwl3945_rx_packet *res = NULL;
1266
1267         if (!skb) {
1268                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1269                 return 1;
1270         }
1271
1272         res = (struct iwl3945_rx_packet *)skb->data;
1273         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1274                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1275                           res->hdr.flags);
1276                 return 1;
1277         }
1278
1279         switch (res->u.add_sta.status) {
1280         case ADD_STA_SUCCESS_MSK:
1281                 break;
1282         default:
1283                 break;
1284         }
1285
1286         /* We didn't cache the SKB; let the caller free it */
1287         return 1;
1288 }
1289
1290 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1291                          struct iwl3945_addsta_cmd *sta, u8 flags)
1292 {
1293         struct iwl3945_rx_packet *res = NULL;
1294         int rc = 0;
1295         struct iwl3945_host_cmd cmd = {
1296                 .id = REPLY_ADD_STA,
1297                 .len = sizeof(struct iwl3945_addsta_cmd),
1298                 .meta.flags = flags,
1299                 .data = sta,
1300         };
1301
1302         if (flags & CMD_ASYNC)
1303                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1304         else
1305                 cmd.meta.flags |= CMD_WANT_SKB;
1306
1307         rc = iwl3945_send_cmd(priv, &cmd);
1308
1309         if (rc || (flags & CMD_ASYNC))
1310                 return rc;
1311
1312         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1313         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1314                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1315                           res->hdr.flags);
1316                 rc = -EIO;
1317         }
1318
1319         if (rc == 0) {
1320                 switch (res->u.add_sta.status) {
1321                 case ADD_STA_SUCCESS_MSK:
1322                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1323                         break;
1324                 default:
1325                         rc = -EIO;
1326                         IWL_WARNING("REPLY_ADD_STA failed\n");
1327                         break;
1328                 }
1329         }
1330
1331         priv->alloc_rxb_skb--;
1332         dev_kfree_skb_any(cmd.meta.u.skb);
1333
1334         return rc;
1335 }
1336
1337 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1338                                    struct ieee80211_key_conf *keyconf,
1339                                    u8 sta_id)
1340 {
1341         unsigned long flags;
1342         __le16 key_flags = 0;
1343
1344         switch (keyconf->alg) {
1345         case ALG_CCMP:
1346                 key_flags |= STA_KEY_FLG_CCMP;
1347                 key_flags |= cpu_to_le16(
1348                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1349                 key_flags &= ~STA_KEY_FLG_INVALID;
1350                 break;
1351         case ALG_TKIP:
1352         case ALG_WEP:
1353         default:
1354                 return -EINVAL;
1355         }
1356         spin_lock_irqsave(&priv->sta_lock, flags);
1357         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1358         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1359         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1360                keyconf->keylen);
1361
1362         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1363                keyconf->keylen);
1364         priv->stations[sta_id].sta.key.key_flags = key_flags;
1365         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1366         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1367
1368         spin_unlock_irqrestore(&priv->sta_lock, flags);
1369
1370         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1371         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1372         return 0;
1373 }
1374
1375 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1376 {
1377         unsigned long flags;
1378
1379         spin_lock_irqsave(&priv->sta_lock, flags);
1380         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1381         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
1382         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1383         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1384         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1385         spin_unlock_irqrestore(&priv->sta_lock, flags);
1386
1387         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1388         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1389         return 0;
1390 }
1391
1392 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1393 {
1394         struct list_head *element;
1395
1396         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1397                        priv->frames_count);
1398
1399         while (!list_empty(&priv->free_frames)) {
1400                 element = priv->free_frames.next;
1401                 list_del(element);
1402                 kfree(list_entry(element, struct iwl3945_frame, list));
1403                 priv->frames_count--;
1404         }
1405
1406         if (priv->frames_count) {
1407                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1408                             priv->frames_count);
1409                 priv->frames_count = 0;
1410         }
1411 }
1412
1413 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1414 {
1415         struct iwl3945_frame *frame;
1416         struct list_head *element;
1417         if (list_empty(&priv->free_frames)) {
1418                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1419                 if (!frame) {
1420                         IWL_ERROR("Could not allocate frame!\n");
1421                         return NULL;
1422                 }
1423
1424                 priv->frames_count++;
1425                 return frame;
1426         }
1427
1428         element = priv->free_frames.next;
1429         list_del(element);
1430         return list_entry(element, struct iwl3945_frame, list);
1431 }
1432
1433 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1434 {
1435         memset(frame, 0, sizeof(*frame));
1436         list_add(&frame->list, &priv->free_frames);
1437 }
1438
1439 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1440                                 struct ieee80211_hdr *hdr,
1441                                 const u8 *dest, int left)
1442 {
1443
1444         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1445             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1446              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1447                 return 0;
1448
1449         if (priv->ibss_beacon->len > left)
1450                 return 0;
1451
1452         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1453
1454         return priv->ibss_beacon->len;
1455 }
1456
1457 static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
1458 {
1459         u8 i;
1460
1461         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1462              i = iwl3945_rates[i].next_ieee) {
1463                 if (rate_mask & (1 << i))
1464                         return iwl3945_rates[i].plcp;
1465         }
1466
1467         return IWL_RATE_INVALID;
1468 }
1469
1470 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1471 {
1472         struct iwl3945_frame *frame;
1473         unsigned int frame_size;
1474         int rc;
1475         u8 rate;
1476
1477         frame = iwl3945_get_free_frame(priv);
1478
1479         if (!frame) {
1480                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1481                           "command.\n");
1482                 return -ENOMEM;
1483         }
1484
1485         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1486                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
1487                                                 0xFF0);
1488                 if (rate == IWL_INVALID_RATE)
1489                         rate = IWL_RATE_6M_PLCP;
1490         } else {
1491                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1492                 if (rate == IWL_INVALID_RATE)
1493                         rate = IWL_RATE_1M_PLCP;
1494         }
1495
1496         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1497
1498         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1499                               &frame->u.cmd[0]);
1500
1501         iwl3945_free_frame(priv, frame);
1502
1503         return rc;
1504 }
1505
1506 /******************************************************************************
1507  *
1508  * EEPROM related functions
1509  *
1510  ******************************************************************************/
1511
1512 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1513 {
1514         memcpy(mac, priv->eeprom.mac_address, 6);
1515 }
1516
1517 /*
1518  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1519  * embedded controller) as EEPROM reader; each read is a series of pulses
1520  * to/from the EEPROM chip, not a single event, so even reads could conflict
1521  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1522  * simply claims ownership, which should be safe when this function is called
1523  * (i.e. before loading uCode!).
1524  */
1525 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1526 {
1527         _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1528         return 0;
1529 }
1530
1531 /**
1532  * iwl3945_eeprom_init - read EEPROM contents
1533  *
1534  * Load the EEPROM contents from adapter into priv->eeprom
1535  *
1536  * NOTE:  This routine uses the non-debug IO access functions.
1537  */
1538 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1539 {
1540         u16 *e = (u16 *)&priv->eeprom;
1541         u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1542         u32 r;
1543         int sz = sizeof(priv->eeprom);
1544         int rc;
1545         int i;
1546         u16 addr;
1547
1548         /* The EEPROM structure has several padding buffers within it
1549          * and when adding new EEPROM maps is subject to programmer errors
1550          * which may be very difficult to identify without explicitly
1551          * checking the resulting size of the eeprom map. */
1552         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1553
1554         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1555                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1556                 return -ENOENT;
1557         }
1558
1559         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1560         rc = iwl3945_eeprom_acquire_semaphore(priv);
1561         if (rc < 0) {
1562                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1563                 return -ENOENT;
1564         }
1565
1566         /* eeprom is an array of 16bit values */
1567         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1568                 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1569                 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1570
1571                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1572                                         i += IWL_EEPROM_ACCESS_DELAY) {
1573                         r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1574                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1575                                 break;
1576                         udelay(IWL_EEPROM_ACCESS_DELAY);
1577                 }
1578
1579                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1580                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1581                         return -ETIMEDOUT;
1582                 }
1583                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1584         }
1585
1586         return 0;
1587 }
1588
1589 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1590 {
1591         if (priv->hw_setting.shared_virt)
1592                 pci_free_consistent(priv->pci_dev,
1593                                     sizeof(struct iwl3945_shared),
1594                                     priv->hw_setting.shared_virt,
1595                                     priv->hw_setting.shared_phys);
1596 }
1597
1598 /**
1599  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1600  *
1601  * return : set the bit for each supported rate insert in ie
1602  */
1603 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1604                                     u16 basic_rate, int *left)
1605 {
1606         u16 ret_rates = 0, bit;
1607         int i;
1608         u8 *cnt = ie;
1609         u8 *rates = ie + 1;
1610
1611         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1612                 if (bit & supported_rate) {
1613                         ret_rates |= bit;
1614                         rates[*cnt] = iwl3945_rates[i].ieee |
1615                                 ((bit & basic_rate) ? 0x80 : 0x00);
1616                         (*cnt)++;
1617                         (*left)--;
1618                         if ((*left <= 0) ||
1619                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1620                                 break;
1621                 }
1622         }
1623
1624         return ret_rates;
1625 }
1626
1627 /**
1628  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1629  */
1630 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1631                               struct ieee80211_mgmt *frame,
1632                               int left, int is_direct)
1633 {
1634         int len = 0;
1635         u8 *pos = NULL;
1636         u16 active_rates, ret_rates, cck_rates;
1637
1638         /* Make sure there is enough space for the probe request,
1639          * two mandatory IEs and the data */
1640         left -= 24;
1641         if (left < 0)
1642                 return 0;
1643         len += 24;
1644
1645         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1646         memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1647         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1648         memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1649         frame->seq_ctrl = 0;
1650
1651         /* fill in our indirect SSID IE */
1652         /* ...next IE... */
1653
1654         left -= 2;
1655         if (left < 0)
1656                 return 0;
1657         len += 2;
1658         pos = &(frame->u.probe_req.variable[0]);
1659         *pos++ = WLAN_EID_SSID;
1660         *pos++ = 0;
1661
1662         /* fill in our direct SSID IE... */
1663         if (is_direct) {
1664                 /* ...next IE... */
1665                 left -= 2 + priv->essid_len;
1666                 if (left < 0)
1667                         return 0;
1668                 /* ... fill it in... */
1669                 *pos++ = WLAN_EID_SSID;
1670                 *pos++ = priv->essid_len;
1671                 memcpy(pos, priv->essid, priv->essid_len);
1672                 pos += priv->essid_len;
1673                 len += 2 + priv->essid_len;
1674         }
1675
1676         /* fill in supported rate */
1677         /* ...next IE... */
1678         left -= 2;
1679         if (left < 0)
1680                 return 0;
1681
1682         /* ... fill it in... */
1683         *pos++ = WLAN_EID_SUPP_RATES;
1684         *pos = 0;
1685
1686         priv->active_rate = priv->rates_mask;
1687         active_rates = priv->active_rate;
1688         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1689
1690         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1691         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1692                         priv->active_rate_basic, &left);
1693         active_rates &= ~ret_rates;
1694
1695         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1696                                  priv->active_rate_basic, &left);
1697         active_rates &= ~ret_rates;
1698
1699         len += 2 + *pos;
1700         pos += (*pos) + 1;
1701         if (active_rates == 0)
1702                 goto fill_end;
1703
1704         /* fill in supported extended rate */
1705         /* ...next IE... */
1706         left -= 2;
1707         if (left < 0)
1708                 return 0;
1709         /* ... fill it in... */
1710         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1711         *pos = 0;
1712         iwl3945_supported_rate_to_ie(pos, active_rates,
1713                                  priv->active_rate_basic, &left);
1714         if (*pos > 0)
1715                 len += 2 + *pos;
1716
1717  fill_end:
1718         return (u16)len;
1719 }
1720
1721 /*
1722  * QoS  support
1723 */
1724 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1725                                        struct iwl3945_qosparam_cmd *qos)
1726 {
1727
1728         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1729                                 sizeof(struct iwl3945_qosparam_cmd), qos);
1730 }
1731
1732 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1733 {
1734         u16 cw_min = 15;
1735         u16 cw_max = 1023;
1736         u8 aifs = 2;
1737         u8 is_legacy = 0;
1738         unsigned long flags;
1739         int i;
1740
1741         spin_lock_irqsave(&priv->lock, flags);
1742         priv->qos_data.qos_active = 0;
1743
1744         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1745                 if (priv->qos_data.qos_enable)
1746                         priv->qos_data.qos_active = 1;
1747                 if (!(priv->active_rate & 0xfff0)) {
1748                         cw_min = 31;
1749                         is_legacy = 1;
1750                 }
1751         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1752                 if (priv->qos_data.qos_enable)
1753                         priv->qos_data.qos_active = 1;
1754         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1755                 cw_min = 31;
1756                 is_legacy = 1;
1757         }
1758
1759         if (priv->qos_data.qos_active)
1760                 aifs = 3;
1761
1762         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1763         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1764         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1765         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1766         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1767
1768         if (priv->qos_data.qos_active) {
1769                 i = 1;
1770                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1771                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1772                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1773                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1774                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1775
1776                 i = 2;
1777                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1778                         cpu_to_le16((cw_min + 1) / 2 - 1);
1779                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1780                         cpu_to_le16(cw_max);
1781                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1782                 if (is_legacy)
1783                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1784                                 cpu_to_le16(6016);
1785                 else
1786                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1787                                 cpu_to_le16(3008);
1788                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1789
1790                 i = 3;
1791                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1792                         cpu_to_le16((cw_min + 1) / 4 - 1);
1793                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1794                         cpu_to_le16((cw_max + 1) / 2 - 1);
1795                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1796                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1797                 if (is_legacy)
1798                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1799                                 cpu_to_le16(3264);
1800                 else
1801                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1802                                 cpu_to_le16(1504);
1803         } else {
1804                 for (i = 1; i < 4; i++) {
1805                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1806                                 cpu_to_le16(cw_min);
1807                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1808                                 cpu_to_le16(cw_max);
1809                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1810                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1811                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1812                 }
1813         }
1814         IWL_DEBUG_QOS("set QoS to default \n");
1815
1816         spin_unlock_irqrestore(&priv->lock, flags);
1817 }
1818
1819 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
1820 {
1821         unsigned long flags;
1822
1823         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1824                 return;
1825
1826         if (!priv->qos_data.qos_enable)
1827                 return;
1828
1829         spin_lock_irqsave(&priv->lock, flags);
1830         priv->qos_data.def_qos_parm.qos_flags = 0;
1831
1832         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1833             !priv->qos_data.qos_cap.q_AP.txop_request)
1834                 priv->qos_data.def_qos_parm.qos_flags |=
1835                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1836
1837         if (priv->qos_data.qos_active)
1838                 priv->qos_data.def_qos_parm.qos_flags |=
1839                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1840
1841         spin_unlock_irqrestore(&priv->lock, flags);
1842
1843         if (force || iwl3945_is_associated(priv)) {
1844                 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
1845                               priv->qos_data.qos_active);
1846
1847                 iwl3945_send_qos_params_command(priv,
1848                                 &(priv->qos_data.def_qos_parm));
1849         }
1850 }
1851
1852 /*
1853  * Power management (not Tx power!) functions
1854  */
1855 #define MSEC_TO_USEC 1024
1856
1857 #define NOSLP __constant_cpu_to_le32(0)
1858 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
1859 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1860 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1861                                      __constant_cpu_to_le32(X1), \
1862                                      __constant_cpu_to_le32(X2), \
1863                                      __constant_cpu_to_le32(X3), \
1864                                      __constant_cpu_to_le32(X4)}
1865
1866
1867 /* default power management (not Tx power) table values */
1868 /* for tim  0-10 */
1869 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
1870         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1871         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1872         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1873         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1874         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1875         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1876 };
1877
1878 /* for tim > 10 */
1879 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
1880         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1881         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1882                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1883         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1884                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1885         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1886                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1887         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1888         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1889                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1890 };
1891
1892 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
1893 {
1894         int rc = 0, i;
1895         struct iwl3945_power_mgr *pow_data;
1896         int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
1897         u16 pci_pm;
1898
1899         IWL_DEBUG_POWER("Initialize power \n");
1900
1901         pow_data = &(priv->power_data);
1902
1903         memset(pow_data, 0, sizeof(*pow_data));
1904
1905         pow_data->active_index = IWL_POWER_RANGE_0;
1906         pow_data->dtim_val = 0xffff;
1907
1908         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1909         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1910
1911         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1912         if (rc != 0)
1913                 return 0;
1914         else {
1915                 struct iwl3945_powertable_cmd *cmd;
1916
1917                 IWL_DEBUG_POWER("adjust power command flags\n");
1918
1919                 for (i = 0; i < IWL_POWER_AC; i++) {
1920                         cmd = &pow_data->pwr_range_0[i].cmd;
1921
1922                         if (pci_pm & 0x1)
1923                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1924                         else
1925                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1926                 }
1927         }
1928         return rc;
1929 }
1930
1931 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1932                                 struct iwl3945_powertable_cmd *cmd, u32 mode)
1933 {
1934         int rc = 0, i;
1935         u8 skip;
1936         u32 max_sleep = 0;
1937         struct iwl3945_power_vec_entry *range;
1938         u8 period = 0;
1939         struct iwl3945_power_mgr *pow_data;
1940
1941         if (mode > IWL_POWER_INDEX_5) {
1942                 IWL_DEBUG_POWER("Error invalid power mode \n");
1943                 return -1;
1944         }
1945         pow_data = &(priv->power_data);
1946
1947         if (pow_data->active_index == IWL_POWER_RANGE_0)
1948                 range = &pow_data->pwr_range_0[0];
1949         else
1950                 range = &pow_data->pwr_range_1[1];
1951
1952         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1953
1954 #ifdef IWL_MAC80211_DISABLE
1955         if (priv->assoc_network != NULL) {
1956                 unsigned long flags;
1957
1958                 period = priv->assoc_network->tim.tim_period;
1959         }
1960 #endif  /*IWL_MAC80211_DISABLE */
1961         skip = range[mode].no_dtim;
1962
1963         if (period == 0) {
1964                 period = 1;
1965                 skip = 0;
1966         }
1967
1968         if (skip == 0) {
1969                 max_sleep = period;
1970                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1971         } else {
1972                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1973                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1974                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1975         }
1976
1977         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1978                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1979                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1980         }
1981
1982         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1983         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1984         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1985         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1986                         le32_to_cpu(cmd->sleep_interval[0]),
1987                         le32_to_cpu(cmd->sleep_interval[1]),
1988                         le32_to_cpu(cmd->sleep_interval[2]),
1989                         le32_to_cpu(cmd->sleep_interval[3]),
1990                         le32_to_cpu(cmd->sleep_interval[4]));
1991
1992         return rc;
1993 }
1994
1995 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
1996 {
1997         u32 uninitialized_var(final_mode);
1998         int rc;
1999         struct iwl3945_powertable_cmd cmd;
2000
2001         /* If on battery, set to 3,
2002          * if plugged into AC power, set to CAM ("continuously aware mode"),
2003          * else user level */
2004         switch (mode) {
2005         case IWL_POWER_BATTERY:
2006                 final_mode = IWL_POWER_INDEX_3;
2007                 break;
2008         case IWL_POWER_AC:
2009                 final_mode = IWL_POWER_MODE_CAM;
2010                 break;
2011         default:
2012                 final_mode = mode;
2013                 break;
2014         }
2015
2016         iwl3945_update_power_cmd(priv, &cmd, final_mode);
2017
2018         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2019
2020         if (final_mode == IWL_POWER_MODE_CAM)
2021                 clear_bit(STATUS_POWER_PMI, &priv->status);
2022         else
2023                 set_bit(STATUS_POWER_PMI, &priv->status);
2024
2025         return rc;
2026 }
2027
2028 int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2029 {
2030         /* Filter incoming packets to determine if they are targeted toward
2031          * this network, discarding packets coming from ourselves */
2032         switch (priv->iw_mode) {
2033         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2034                 /* packets from our adapter are dropped (echo) */
2035                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2036                         return 0;
2037                 /* {broad,multi}cast packets to our IBSS go through */
2038                 if (is_multicast_ether_addr(header->addr1))
2039                         return !compare_ether_addr(header->addr3, priv->bssid);
2040                 /* packets to our adapter go through */
2041                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2042         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2043                 /* packets from our adapter are dropped (echo) */
2044                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2045                         return 0;
2046                 /* {broad,multi}cast packets to our BSS go through */
2047                 if (is_multicast_ether_addr(header->addr1))
2048                         return !compare_ether_addr(header->addr2, priv->bssid);
2049                 /* packets to our adapter go through */
2050                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2051         default:
2052                 return 1;
2053         }
2054
2055         return 1;
2056 }
2057
2058 /**
2059  * iwl3945_scan_cancel - Cancel any currently executing HW scan
2060  *
2061  * NOTE: priv->mutex is not required before calling this function
2062  */
2063 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
2064 {
2065         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2066                 clear_bit(STATUS_SCANNING, &priv->status);
2067                 return 0;
2068         }
2069
2070         if (test_bit(STATUS_SCANNING, &priv->status)) {
2071                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2072                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2073                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2074                         queue_work(priv->workqueue, &priv->abort_scan);
2075
2076                 } else
2077                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2078
2079                 return test_bit(STATUS_SCANNING, &priv->status);
2080         }
2081
2082         return 0;
2083 }
2084
2085 /**
2086  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2087  * @ms: amount of time to wait (in milliseconds) for scan to abort
2088  *
2089  * NOTE: priv->mutex must be held before calling this function
2090  */
2091 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2092 {
2093         unsigned long now = jiffies;
2094         int ret;
2095
2096         ret = iwl3945_scan_cancel(priv);
2097         if (ret && ms) {
2098                 mutex_unlock(&priv->mutex);
2099                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2100                                 test_bit(STATUS_SCANNING, &priv->status))
2101                         msleep(1);
2102                 mutex_lock(&priv->mutex);
2103
2104                 return test_bit(STATUS_SCANNING, &priv->status);
2105         }
2106
2107         return ret;
2108 }
2109
2110 static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
2111 {
2112         /* Reset ieee stats */
2113
2114         /* We don't reset the net_device_stats (ieee->stats) on
2115          * re-association */
2116
2117         priv->last_seq_num = -1;
2118         priv->last_frag_num = -1;
2119         priv->last_packet_time = 0;
2120
2121         iwl3945_scan_cancel(priv);
2122 }
2123
2124 #define MAX_UCODE_BEACON_INTERVAL       1024
2125 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2126
2127 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2128 {
2129         u16 new_val = 0;
2130         u16 beacon_factor = 0;
2131
2132         beacon_factor =
2133             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2134                 / MAX_UCODE_BEACON_INTERVAL;
2135         new_val = beacon_val / beacon_factor;
2136
2137         return cpu_to_le16(new_val);
2138 }
2139
2140 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2141 {
2142         u64 interval_tm_unit;
2143         u64 tsf, result;
2144         unsigned long flags;
2145         struct ieee80211_conf *conf = NULL;
2146         u16 beacon_int = 0;
2147
2148         conf = ieee80211_get_hw_conf(priv->hw);
2149
2150         spin_lock_irqsave(&priv->lock, flags);
2151         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2152         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2153
2154         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2155
2156         tsf = priv->timestamp1;
2157         tsf = ((tsf << 32) | priv->timestamp0);
2158
2159         beacon_int = priv->beacon_int;
2160         spin_unlock_irqrestore(&priv->lock, flags);
2161
2162         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2163                 if (beacon_int == 0) {
2164                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2165                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2166                 } else {
2167                         priv->rxon_timing.beacon_interval =
2168                                 cpu_to_le16(beacon_int);
2169                         priv->rxon_timing.beacon_interval =
2170                             iwl3945_adjust_beacon_interval(
2171                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2172                 }
2173
2174                 priv->rxon_timing.atim_window = 0;
2175         } else {
2176                 priv->rxon_timing.beacon_interval =
2177                         iwl3945_adjust_beacon_interval(conf->beacon_int);
2178                 /* TODO: we need to get atim_window from upper stack
2179                  * for now we set to 0 */
2180                 priv->rxon_timing.atim_window = 0;
2181         }
2182
2183         interval_tm_unit =
2184                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2185         result = do_div(tsf, interval_tm_unit);
2186         priv->rxon_timing.beacon_init_val =
2187             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2188
2189         IWL_DEBUG_ASSOC
2190             ("beacon interval %d beacon timer %d beacon tim %d\n",
2191                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2192                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2193                 le16_to_cpu(priv->rxon_timing.atim_window));
2194 }
2195
2196 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2197 {
2198         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2199                 IWL_ERROR("APs don't scan.\n");
2200                 return 0;
2201         }
2202
2203         if (!iwl3945_is_ready_rf(priv)) {
2204                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2205                 return -EIO;
2206         }
2207
2208         if (test_bit(STATUS_SCANNING, &priv->status)) {
2209                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2210                 return -EAGAIN;
2211         }
2212
2213         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2214                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2215                                "Queuing.\n");
2216                 return -EAGAIN;
2217         }
2218
2219         IWL_DEBUG_INFO("Starting scan...\n");
2220         if (priv->cfg->sku & IWL_SKU_G)
2221                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
2222         if (priv->cfg->sku & IWL_SKU_A)
2223                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
2224         set_bit(STATUS_SCANNING, &priv->status);
2225         priv->scan_start = jiffies;
2226         priv->scan_pass_start = priv->scan_start;
2227
2228         queue_work(priv->workqueue, &priv->request_scan);
2229
2230         return 0;
2231 }
2232
2233 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2234 {
2235         struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2236
2237         if (hw_decrypt)
2238                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2239         else
2240                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2241
2242         return 0;
2243 }
2244
2245 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
2246                                           enum ieee80211_band band)
2247 {
2248         if (band == IEEE80211_BAND_5GHZ) {
2249                 priv->staging_rxon.flags &=
2250                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2251                       | RXON_FLG_CCK_MSK);
2252                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2253         } else {
2254                 /* Copied from iwl3945_bg_post_associate() */
2255                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2256                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2257                 else
2258                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2259
2260                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2261                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2262
2263                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2264                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2265                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2266         }
2267 }
2268
2269 /*
2270  * initialize rxon structure with default values from eeprom
2271  */
2272 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
2273 {
2274         const struct iwl3945_channel_info *ch_info;
2275
2276         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2277
2278         switch (priv->iw_mode) {
2279         case IEEE80211_IF_TYPE_AP:
2280                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2281                 break;
2282
2283         case IEEE80211_IF_TYPE_STA:
2284                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2285                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2286                 break;
2287
2288         case IEEE80211_IF_TYPE_IBSS:
2289                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2290                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2291                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2292                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2293                 break;
2294
2295         case IEEE80211_IF_TYPE_MNTR:
2296                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2297                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2298                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2299                 break;
2300         default:
2301                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
2302                 break;
2303         }
2304
2305 #if 0
2306         /* TODO:  Figure out when short_preamble would be set and cache from
2307          * that */
2308         if (!hw_to_local(priv->hw)->short_preamble)
2309                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2310         else
2311                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2312 #endif
2313
2314         ch_info = iwl3945_get_channel_info(priv, priv->band,
2315                                        le16_to_cpu(priv->staging_rxon.channel));
2316
2317         if (!ch_info)
2318                 ch_info = &priv->channel_info[0];
2319
2320         /*
2321          * in some case A channels are all non IBSS
2322          * in this case force B/G channel
2323          */
2324         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2325             !(is_channel_ibss(ch_info)))
2326                 ch_info = &priv->channel_info[0];
2327
2328         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2329         if (is_channel_a_band(ch_info))
2330                 priv->band = IEEE80211_BAND_5GHZ;
2331         else
2332                 priv->band = IEEE80211_BAND_2GHZ;
2333
2334         iwl3945_set_flags_for_phymode(priv, priv->band);
2335
2336         priv->staging_rxon.ofdm_basic_rates =
2337             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2338         priv->staging_rxon.cck_basic_rates =
2339             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2340 }
2341
2342 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2343 {
2344         if (mode == IEEE80211_IF_TYPE_IBSS) {
2345                 const struct iwl3945_channel_info *ch_info;
2346
2347                 ch_info = iwl3945_get_channel_info(priv,
2348                         priv->band,
2349                         le16_to_cpu(priv->staging_rxon.channel));
2350
2351                 if (!ch_info || !is_channel_ibss(ch_info)) {
2352                         IWL_ERROR("channel %d not IBSS channel\n",
2353                                   le16_to_cpu(priv->staging_rxon.channel));
2354                         return -EINVAL;
2355                 }
2356         }
2357
2358         priv->iw_mode = mode;
2359
2360         iwl3945_connection_init_rx_config(priv);
2361         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2362
2363         iwl3945_clear_stations_table(priv);
2364
2365         /* dont commit rxon if rf-kill is on*/
2366         if (!iwl3945_is_ready_rf(priv))
2367                 return -EAGAIN;
2368
2369         cancel_delayed_work(&priv->scan_check);
2370         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2371                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2372                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2373                 return -EAGAIN;
2374         }
2375
2376         iwl3945_commit_rxon(priv);
2377
2378         return 0;
2379 }
2380
2381 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2382                                       struct ieee80211_tx_info *info,
2383                                       struct iwl3945_cmd *cmd,
2384                                       struct sk_buff *skb_frag,
2385                                       int last_frag)
2386 {
2387         struct iwl3945_hw_key *keyinfo =
2388             &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
2389
2390         switch (keyinfo->alg) {
2391         case ALG_CCMP:
2392                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2393                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2394                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2395                 break;
2396
2397         case ALG_TKIP:
2398 #if 0
2399                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2400
2401                 if (last_frag)
2402                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2403                                8);
2404                 else
2405                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2406 #endif
2407                 break;
2408
2409         case ALG_WEP:
2410                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2411                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2412
2413                 if (keyinfo->keylen == 13)
2414                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2415
2416                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2417
2418                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2419                              "with key %d\n", info->control.hw_key->hw_key_idx);
2420                 break;
2421
2422         default:
2423                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2424                 break;
2425         }
2426 }
2427
2428 /*
2429  * handle build REPLY_TX command notification.
2430  */
2431 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2432                                   struct iwl3945_cmd *cmd,
2433                                   struct ieee80211_tx_info *info,
2434                                   struct ieee80211_hdr *hdr,
2435                                   int is_unicast, u8 std_id)
2436 {
2437         __le16 fc = hdr->frame_control;
2438         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2439
2440         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2441         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
2442                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2443                 if (ieee80211_is_mgmt(fc))
2444                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2445                 if (ieee80211_is_probe_resp(fc) &&
2446                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2447                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2448         } else {
2449                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2450                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2451         }
2452
2453         cmd->cmd.tx.sta_id = std_id;
2454         if (ieee80211_has_morefrags(fc))
2455                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2456
2457         if (ieee80211_is_data_qos(fc)) {
2458                 u8 *qc = ieee80211_get_qos_ctl(hdr);
2459                 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
2460                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2461         } else {
2462                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2463         }
2464
2465         if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
2466                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2467                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2468         } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
2469                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2470                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2471         }
2472
2473         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2474                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2475
2476         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2477         if (ieee80211_is_mgmt(fc)) {
2478                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2479                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2480                 else
2481                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2482         } else {
2483                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2484 #ifdef CONFIG_IWL3945_LEDS
2485                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2486 #endif
2487         }
2488
2489         cmd->cmd.tx.driver_txop = 0;
2490         cmd->cmd.tx.tx_flags = tx_flags;
2491         cmd->cmd.tx.next_frame_len = 0;
2492 }
2493
2494 /**
2495  * iwl3945_get_sta_id - Find station's index within station table
2496  */
2497 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2498 {
2499         int sta_id;
2500         u16 fc = le16_to_cpu(hdr->frame_control);
2501
2502         /* If this frame is broadcast or management, use broadcast station id */
2503         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2504             is_multicast_ether_addr(hdr->addr1))
2505                 return priv->hw_setting.bcast_sta_id;
2506
2507         switch (priv->iw_mode) {
2508
2509         /* If we are a client station in a BSS network, use the special
2510          * AP station entry (that's the only station we communicate with) */
2511         case IEEE80211_IF_TYPE_STA:
2512                 return IWL_AP_ID;
2513
2514         /* If we are an AP, then find the station, or use BCAST */
2515         case IEEE80211_IF_TYPE_AP:
2516                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2517                 if (sta_id != IWL_INVALID_STATION)
2518                         return sta_id;
2519                 return priv->hw_setting.bcast_sta_id;
2520
2521         /* If this frame is going out to an IBSS network, find the station,
2522          * or create a new station table entry */
2523         case IEEE80211_IF_TYPE_IBSS: {
2524                 DECLARE_MAC_BUF(mac);
2525
2526                 /* Create new station table entry */
2527                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2528                 if (sta_id != IWL_INVALID_STATION)
2529                         return sta_id;
2530
2531                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2532
2533                 if (sta_id != IWL_INVALID_STATION)
2534                         return sta_id;
2535
2536                 IWL_DEBUG_DROP("Station %s not in station map. "
2537                                "Defaulting to broadcast...\n",
2538                                print_mac(mac, hdr->addr1));
2539                 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2540                 return priv->hw_setting.bcast_sta_id;
2541         }
2542         default:
2543                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2544                 return priv->hw_setting.bcast_sta_id;
2545         }
2546 }
2547
2548 /*
2549  * start REPLY_TX command process
2550  */
2551 static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
2552 {
2553         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2554         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2555         struct iwl3945_tfd_frame *tfd;
2556         u32 *control_flags;
2557         int txq_id = skb_get_queue_mapping(skb);
2558         struct iwl3945_tx_queue *txq = NULL;
2559         struct iwl3945_queue *q = NULL;
2560         dma_addr_t phys_addr;
2561         dma_addr_t txcmd_phys;
2562         struct iwl3945_cmd *out_cmd = NULL;
2563         u16 len, idx, len_org, hdr_len;
2564         u8 id;
2565         u8 unicast;
2566         u8 sta_id;
2567         u8 tid = 0;
2568         u16 seq_number = 0;
2569         __le16 fc;
2570         u8 wait_write_ptr = 0;
2571         u8 *qc = NULL;
2572         unsigned long flags;
2573         int rc;
2574
2575         spin_lock_irqsave(&priv->lock, flags);
2576         if (iwl3945_is_rfkill(priv)) {
2577                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2578                 goto drop_unlock;
2579         }
2580
2581         if (!priv->vif) {
2582                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2583                 goto drop_unlock;
2584         }
2585
2586         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2587                 IWL_ERROR("ERROR: No TX rate available.\n");
2588                 goto drop_unlock;
2589         }
2590
2591         unicast = !is_multicast_ether_addr(hdr->addr1);
2592         id = 0;
2593
2594         fc = hdr->frame_control;
2595
2596 #ifdef CONFIG_IWL3945_DEBUG
2597         if (ieee80211_is_auth(fc))
2598                 IWL_DEBUG_TX("Sending AUTH frame\n");
2599         else if (ieee80211_is_assoc_req(fc))
2600                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2601         else if (ieee80211_is_reassoc_req(fc))
2602                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2603 #endif
2604
2605         /* drop all data frame if we are not associated */
2606         if ((!iwl3945_is_associated(priv) ||
2607              ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id)) &&
2608             ieee80211_is_data(fc)) {
2609                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2610                 goto drop_unlock;
2611         }
2612
2613         spin_unlock_irqrestore(&priv->lock, flags);
2614
2615         hdr_len = ieee80211_get_hdrlen(le16_to_cpu(fc));
2616
2617         /* Find (or create) index into station table for destination station */
2618         sta_id = iwl3945_get_sta_id(priv, hdr);
2619         if (sta_id == IWL_INVALID_STATION) {
2620                 DECLARE_MAC_BUF(mac);
2621
2622                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2623                                print_mac(mac, hdr->addr1));
2624                 goto drop;
2625         }
2626
2627         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2628
2629         if (ieee80211_is_data_qos(fc)) {
2630                 qc = ieee80211_get_qos_ctl(hdr);
2631                 tid = qc[0] & 0xf;
2632                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2633                                 IEEE80211_SCTL_SEQ;
2634                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2635                         (hdr->seq_ctrl &
2636                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2637                 seq_number += 0x10;
2638         }
2639
2640         /* Descriptor for chosen Tx queue */
2641         txq = &priv->txq[txq_id];
2642         q = &txq->q;
2643
2644         spin_lock_irqsave(&priv->lock, flags);
2645
2646         /* Set up first empty TFD within this queue's circular TFD buffer */
2647         tfd = &txq->bd[q->write_ptr];
2648         memset(tfd, 0, sizeof(*tfd));
2649         control_flags = (u32 *) tfd;
2650         idx = get_cmd_index(q, q->write_ptr, 0);
2651
2652         /* Set up driver data for this TFD */
2653         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2654         txq->txb[q->write_ptr].skb[0] = skb;
2655
2656         /* Init first empty entry in queue's array of Tx/cmd buffers */
2657         out_cmd = &txq->cmd[idx];
2658         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2659         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2660
2661         /*
2662          * Set up the Tx-command (not MAC!) header.
2663          * Store the chosen Tx queue and TFD index within the sequence field;
2664          * after Tx, uCode's Tx response will return this value so driver can
2665          * locate the frame within the tx queue and do post-tx processing.
2666          */
2667         out_cmd->hdr.cmd = REPLY_TX;
2668         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2669                                 INDEX_TO_SEQ(q->write_ptr)));
2670
2671         /* Copy MAC header from skb into command buffer */
2672         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2673
2674         /*
2675          * Use the first empty entry in this queue's command buffer array
2676          * to contain the Tx command and MAC header concatenated together
2677          * (payload data will be in another buffer).
2678          * Size of this varies, due to varying MAC header length.
2679          * If end is not dword aligned, we'll have 2 extra bytes at the end
2680          * of the MAC header (device reads on dword boundaries).
2681          * We'll tell device about this padding later.
2682          */
2683         len = priv->hw_setting.tx_cmd_len +
2684                 sizeof(struct iwl3945_cmd_header) + hdr_len;
2685
2686         len_org = len;
2687         len = (len + 3) & ~3;
2688
2689         if (len_org != len)
2690                 len_org = 1;
2691         else
2692                 len_org = 0;
2693
2694         /* Physical address of this Tx command's header (not MAC header!),
2695          * within command buffer array. */
2696         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2697                      offsetof(struct iwl3945_cmd, hdr);
2698
2699         /* Add buffer containing Tx command and MAC(!) header to TFD's
2700          * first entry */
2701         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2702
2703         if (!(info->flags & IEEE80211_TX_CTL_DO_NOT_ENCRYPT))
2704                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2705
2706         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2707          * if any (802.11 null frames have no payload). */
2708         len = skb->len - hdr_len;
2709         if (len) {
2710                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2711                                            len, PCI_DMA_TODEVICE);
2712                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2713         }
2714
2715         if (!len)
2716                 /* If there is no payload, then we use only one Tx buffer */
2717                 *control_flags = TFD_CTL_COUNT_SET(1);
2718         else
2719                 /* Else use 2 buffers.
2720                  * Tell 3945 about any padding after MAC header */
2721                 *control_flags = TFD_CTL_COUNT_SET(2) |
2722                         TFD_CTL_PAD_SET(U32_PAD(len));
2723
2724         /* Total # bytes to be transmitted */
2725         len = (u16)skb->len;
2726         out_cmd->cmd.tx.len = cpu_to_le16(len);
2727
2728         /* TODO need this for burst mode later on */
2729         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
2730
2731         /* set is_hcca to 0; it probably will never be implemented */
2732         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2733
2734         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2735         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2736
2737         if (!ieee80211_has_morefrags(hdr->frame_control)) {
2738                 txq->need_update = 1;
2739                 if (qc) {
2740                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2741                 }
2742         } else {
2743                 wait_write_ptr = 1;
2744                 txq->need_update = 0;
2745         }
2746
2747         iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2748                            sizeof(out_cmd->cmd.tx));
2749
2750         iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2751                            ieee80211_get_hdrlen(le16_to_cpu(fc)));
2752
2753         /* Tell device the write index *just past* this latest filled TFD */
2754         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2755         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2756         spin_unlock_irqrestore(&priv->lock, flags);
2757
2758         if (rc)
2759                 return rc;
2760
2761         if ((iwl3945_queue_space(q) < q->high_mark)
2762             && priv->mac80211_registered) {
2763                 if (wait_write_ptr) {
2764                         spin_lock_irqsave(&priv->lock, flags);
2765                         txq->need_update = 1;
2766                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2767                         spin_unlock_irqrestore(&priv->lock, flags);
2768                 }
2769
2770                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2771         }
2772
2773         return 0;
2774
2775 drop_unlock:
2776         spin_unlock_irqrestore(&priv->lock, flags);
2777 drop:
2778         return -1;
2779 }
2780
2781 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2782 {
2783         const struct ieee80211_supported_band *sband = NULL;
2784         struct ieee80211_rate *rate;
2785         int i;
2786
2787         sband = iwl3945_get_band(priv, priv->band);
2788         if (!sband) {
2789                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2790                 return;
2791         }
2792
2793         priv->active_rate = 0;
2794         priv->active_rate_basic = 0;
2795
2796         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2797                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2798
2799         for (i = 0; i < sband->n_bitrates; i++) {
2800                 rate = &sband->bitrates[i];
2801                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2802                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2803                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2804                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2805                         priv->active_rate |= (1 << rate->hw_value);
2806                 }
2807         }
2808
2809         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2810                        priv->active_rate, priv->active_rate_basic);
2811
2812         /*
2813          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2814          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2815          * OFDM
2816          */
2817         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2818                 priv->staging_rxon.cck_basic_rates =
2819                     ((priv->active_rate_basic &
2820                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2821         else
2822                 priv->staging_rxon.cck_basic_rates =
2823                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2824
2825         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2826                 priv->staging_rxon.ofdm_basic_rates =
2827                     ((priv->active_rate_basic &
2828                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2829                       IWL_FIRST_OFDM_RATE) & 0xFF;
2830         else
2831                 priv->staging_rxon.ofdm_basic_rates =
2832                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2833 }
2834
2835 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
2836 {
2837         unsigned long flags;
2838
2839         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2840                 return;
2841
2842         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2843                           disable_radio ? "OFF" : "ON");
2844
2845         if (disable_radio) {
2846                 iwl3945_scan_cancel(priv);
2847                 /* FIXME: This is a workaround for AP */
2848                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2849                         spin_lock_irqsave(&priv->lock, flags);
2850                         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
2851                                     CSR_UCODE_SW_BIT_RFKILL);
2852                         spin_unlock_irqrestore(&priv->lock, flags);
2853                         iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2854                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2855                 }
2856                 return;
2857         }
2858
2859         spin_lock_irqsave(&priv->lock, flags);
2860         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2861
2862         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2863         spin_unlock_irqrestore(&priv->lock, flags);
2864
2865         /* wake up ucode */
2866         msleep(10);
2867
2868         spin_lock_irqsave(&priv->lock, flags);
2869         iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
2870         if (!iwl3945_grab_nic_access(priv))
2871                 iwl3945_release_nic_access(priv);
2872         spin_unlock_irqrestore(&priv->lock, flags);
2873
2874         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2875                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2876                                   "disabled by HW switch\n");
2877                 return;
2878         }
2879
2880         if (priv->is_open)
2881                 queue_work(priv->workqueue, &priv->restart);
2882         return;
2883 }
2884
2885 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
2886                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2887 {
2888         u16 fc =
2889             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2890
2891         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2892                 return;
2893
2894         if (!(fc & IEEE80211_FCTL_PROTECTED))
2895                 return;
2896
2897         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2898         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2899         case RX_RES_STATUS_SEC_TYPE_TKIP:
2900                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2901                     RX_RES_STATUS_BAD_ICV_MIC)
2902                         stats->flag |= RX_FLAG_MMIC_ERROR;
2903         case RX_RES_STATUS_SEC_TYPE_WEP:
2904         case RX_RES_STATUS_SEC_TYPE_CCMP:
2905                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2906                     RX_RES_STATUS_DECRYPT_OK) {
2907                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2908                         stats->flag |= RX_FLAG_DECRYPTED;
2909                 }
2910                 break;
2911
2912         default:
2913                 break;
2914         }
2915 }
2916
2917 #define IWL_PACKET_RETRY_TIME HZ
2918
2919 int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2920 {
2921         u16 sc = le16_to_cpu(header->seq_ctrl);
2922         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2923         u16 frag = sc & IEEE80211_SCTL_FRAG;
2924         u16 *last_seq, *last_frag;
2925         unsigned long *last_time;
2926
2927         switch (priv->iw_mode) {
2928         case IEEE80211_IF_TYPE_IBSS:{
2929                 struct list_head *p;
2930                 struct iwl3945_ibss_seq *entry = NULL;
2931                 u8 *mac = header->addr2;
2932                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2933
2934                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2935                         entry = list_entry(p, struct iwl3945_ibss_seq, list);
2936                         if (!compare_ether_addr(entry->mac, mac))
2937                                 break;
2938                 }
2939                 if (p == &priv->ibss_mac_hash[index]) {
2940                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2941                         if (!entry) {
2942                                 IWL_ERROR("Cannot malloc new mac entry\n");
2943                                 return 0;
2944                         }
2945                         memcpy(entry->mac, mac, ETH_ALEN);
2946                         entry->seq_num = seq;
2947                         entry->frag_num = frag;
2948                         entry->packet_time = jiffies;
2949                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2950                         return 0;
2951                 }
2952                 last_seq = &entry->seq_num;
2953                 last_frag = &entry->frag_num;
2954                 last_time = &entry->packet_time;
2955                 break;
2956         }
2957         case IEEE80211_IF_TYPE_STA:
2958                 last_seq = &priv->last_seq_num;
2959                 last_frag = &priv->last_frag_num;
2960                 last_time = &priv->last_packet_time;
2961                 break;
2962         default:
2963                 return 0;
2964         }
2965         if ((*last_seq == seq) &&
2966             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2967                 if (*last_frag == frag)
2968                         goto drop;
2969                 if (*last_frag + 1 != frag)
2970                         /* out-of-order fragment */
2971                         goto drop;
2972         } else
2973                 *last_seq = seq;
2974
2975         *last_frag = frag;
2976         *last_time = jiffies;
2977         return 0;
2978
2979  drop:
2980         return 1;
2981 }
2982
2983 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2984
2985 #include "iwl-spectrum.h"
2986
2987 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2988 #define BEACON_TIME_MASK_HIGH   0xFF000000
2989 #define TIME_UNIT               1024
2990
2991 /*
2992  * extended beacon time format
2993  * time in usec will be changed into a 32-bit value in 8:24 format
2994  * the high 1 byte is the beacon counts
2995  * the lower 3 bytes is the time in usec within one beacon interval
2996  */
2997
2998 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2999 {
3000         u32 quot;
3001         u32 rem;
3002         u32 interval = beacon_interval * 1024;
3003
3004         if (!interval || !usec)
3005                 return 0;
3006
3007         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3008         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3009
3010         return (quot << 24) + rem;
3011 }
3012
3013 /* base is usually what we get from ucode with each received frame,
3014  * the same as HW timer counter counting down
3015  */
3016
3017 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3018 {
3019         u32 base_low = base & BEACON_TIME_MASK_LOW;
3020         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3021         u32 interval = beacon_interval * TIME_UNIT;
3022         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3023             (addon & BEACON_TIME_MASK_HIGH);
3024
3025         if (base_low > addon_low)
3026                 res += base_low - addon_low;
3027         else if (base_low < addon_low) {
3028                 res += interval + base_low - addon_low;
3029                 res += (1 << 24);
3030         } else
3031                 res += (1 << 24);
3032
3033         return cpu_to_le32(res);
3034 }
3035
3036 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
3037                                struct ieee80211_measurement_params *params,
3038                                u8 type)
3039 {
3040         struct iwl3945_spectrum_cmd spectrum;
3041         struct iwl3945_rx_packet *res;
3042         struct iwl3945_host_cmd cmd = {
3043                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3044                 .data = (void *)&spectrum,
3045                 .meta.flags = CMD_WANT_SKB,
3046         };
3047         u32 add_time = le64_to_cpu(params->start_time);
3048         int rc;
3049         int spectrum_resp_status;
3050         int duration = le16_to_cpu(params->duration);
3051
3052         if (iwl3945_is_associated(priv))
3053                 add_time =
3054                     iwl3945_usecs_to_beacons(
3055                         le64_to_cpu(params->start_time) - priv->last_tsf,
3056                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3057
3058         memset(&spectrum, 0, sizeof(spectrum));
3059
3060         spectrum.channel_count = cpu_to_le16(1);
3061         spectrum.flags =
3062             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3063         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3064         cmd.len = sizeof(spectrum);
3065         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3066
3067         if (iwl3945_is_associated(priv))
3068                 spectrum.start_time =
3069                     iwl3945_add_beacon_time(priv->last_beacon_time,
3070                                 add_time,
3071                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3072         else
3073                 spectrum.start_time = 0;
3074
3075         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3076         spectrum.channels[0].channel = params->channel;
3077         spectrum.channels[0].type = type;
3078         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3079                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3080                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3081
3082         rc = iwl3945_send_cmd_sync(priv, &cmd);
3083         if (rc)
3084                 return rc;
3085
3086         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
3087         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3088                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3089                 rc = -EIO;
3090         }
3091
3092         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3093         switch (spectrum_resp_status) {
3094         case 0:         /* Command will be handled */
3095                 if (res->u.spectrum.id != 0xff) {
3096                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
3097                                                 res->u.spectrum.id);
3098                         priv->measurement_status &= ~MEASUREMENT_READY;
3099                 }
3100                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3101                 rc = 0;
3102                 break;
3103
3104         case 1:         /* Command will not be handled */
3105                 rc = -EAGAIN;
3106                 break;
3107         }
3108
3109         dev_kfree_skb_any(cmd.meta.u.skb);
3110
3111         return rc;
3112 }
3113 #endif
3114
3115 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
3116                                struct iwl3945_rx_mem_buffer *rxb)
3117 {
3118         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3119         struct iwl3945_alive_resp *palive;
3120         struct delayed_work *pwork;
3121
3122         palive = &pkt->u.alive_frame;
3123
3124         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3125                        "0x%01X 0x%01X\n",
3126                        palive->is_valid, palive->ver_type,
3127                        palive->ver_subtype);
3128
3129         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3130                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3131                 memcpy(&priv->card_alive_init,
3132                        &pkt->u.alive_frame,
3133                        sizeof(struct iwl3945_init_alive_resp));
3134                 pwork = &priv->init_alive_start;
3135         } else {
3136                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3137                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3138                        sizeof(struct iwl3945_alive_resp));
3139                 pwork = &priv->alive_start;
3140                 iwl3945_disable_events(priv);
3141         }
3142
3143         /* We delay the ALIVE response by 5ms to
3144          * give the HW RF Kill time to activate... */
3145         if (palive->is_valid == UCODE_VALID_OK)
3146                 queue_delayed_work(priv->workqueue, pwork,
3147                                    msecs_to_jiffies(5));
3148         else
3149                 IWL_WARNING("uCode did not respond OK.\n");
3150 }
3151
3152 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
3153                                  struct iwl3945_rx_mem_buffer *rxb)
3154 {
3155         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3156
3157         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3158         return;
3159 }
3160
3161 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
3162                                struct iwl3945_rx_mem_buffer *rxb)
3163 {
3164         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3165
3166         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3167                 "seq 0x%04X ser 0x%08X\n",
3168                 le32_to_cpu(pkt->u.err_resp.error_type),
3169                 get_cmd_string(pkt->u.err_resp.cmd_id),
3170                 pkt->u.err_resp.cmd_id,
3171                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3172                 le32_to_cpu(pkt->u.err_resp.error_info));
3173 }
3174
3175 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3176
3177 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3178 {
3179         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3180         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3181         struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
3182         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3183                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3184         rxon->channel = csa->channel;
3185         priv->staging_rxon.channel = csa->channel;
3186 }
3187
3188 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3189                                           struct iwl3945_rx_mem_buffer *rxb)
3190 {
3191 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3192         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3193         struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
3194
3195         if (!report->state) {
3196                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3197                           "Spectrum Measure Notification: Start\n");
3198                 return;
3199         }
3200
3201         memcpy(&priv->measure_report, report, sizeof(*report));
3202         priv->measurement_status |= MEASUREMENT_READY;
3203 #endif
3204 }
3205
3206 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3207                                   struct iwl3945_rx_mem_buffer *rxb)
3208 {
3209 #ifdef CONFIG_IWL3945_DEBUG
3210         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3211         struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
3212         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3213                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3214 #endif
3215 }
3216
3217 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3218                                              struct iwl3945_rx_mem_buffer *rxb)
3219 {
3220         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3221         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3222                         "notification for %s:\n",
3223                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3224         iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3225 }
3226
3227 static void iwl3945_bg_beacon_update(struct work_struct *work)
3228 {
3229         struct iwl3945_priv *priv =
3230                 container_of(work, struct iwl3945_priv, beacon_update);
3231         struct sk_buff *beacon;
3232
3233         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3234         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
3235
3236         if (!beacon) {
3237                 IWL_ERROR("update beacon failed\n");
3238                 return;
3239         }
3240
3241         mutex_lock(&priv->mutex);
3242         /* new beacon skb is allocated every time; dispose previous.*/
3243         if (priv->ibss_beacon)
3244                 dev_kfree_skb(priv->ibss_beacon);
3245
3246         priv->ibss_beacon = beacon;
3247         mutex_unlock(&priv->mutex);
3248
3249         iwl3945_send_beacon_cmd(priv);
3250 }
3251
3252 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3253                                 struct iwl3945_rx_mem_buffer *rxb)
3254 {
3255 #ifdef CONFIG_IWL3945_DEBUG
3256         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3257         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3258         u8 rate = beacon->beacon_notify_hdr.rate;
3259
3260         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3261                 "tsf %d %d rate %d\n",
3262                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3263                 beacon->beacon_notify_hdr.failure_frame,
3264                 le32_to_cpu(beacon->ibss_mgr_status),
3265                 le32_to_cpu(beacon->high_tsf),
3266                 le32_to_cpu(beacon->low_tsf), rate);
3267 #endif
3268
3269         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3270             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3271                 queue_work(priv->workqueue, &priv->beacon_update);
3272 }
3273
3274 /* Service response to REPLY_SCAN_CMD (0x80) */
3275 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3276                               struct iwl3945_rx_mem_buffer *rxb)
3277 {
3278 #ifdef CONFIG_IWL3945_DEBUG
3279         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3280         struct iwl3945_scanreq_notification *notif =
3281             (struct iwl3945_scanreq_notification *)pkt->u.raw;
3282
3283         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3284 #endif
3285 }
3286
3287 /* Service SCAN_START_NOTIFICATION (0x82) */
3288 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3289                                     struct iwl3945_rx_mem_buffer *rxb)
3290 {
3291         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3292         struct iwl3945_scanstart_notification *notif =
3293             (struct iwl3945_scanstart_notification *)pkt->u.raw;
3294         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3295         IWL_DEBUG_SCAN("Scan start: "
3296                        "%d [802.11%s] "
3297                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3298                        notif->channel,
3299                        notif->band ? "bg" : "a",
3300                        notif->tsf_high,
3301                        notif->tsf_low, notif->status, notif->beacon_timer);
3302 }
3303
3304 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3305 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3306                                       struct iwl3945_rx_mem_buffer *rxb)
3307 {
3308         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3309         struct iwl3945_scanresults_notification *notif =
3310             (struct iwl3945_scanresults_notification *)pkt->u.raw;
3311
3312         IWL_DEBUG_SCAN("Scan ch.res: "
3313                        "%d [802.11%s] "
3314                        "(TSF: 0x%08X:%08X) - %d "
3315                        "elapsed=%lu usec (%dms since last)\n",
3316                        notif->channel,
3317                        notif->band ? "bg" : "a",
3318                        le32_to_cpu(notif->tsf_high),
3319                        le32_to_cpu(notif->tsf_low),
3320                        le32_to_cpu(notif->statistics[0]),
3321                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3322                        jiffies_to_msecs(elapsed_jiffies
3323                                         (priv->last_scan_jiffies, jiffies)));
3324
3325         priv->last_scan_jiffies = jiffies;
3326         priv->next_scan_jiffies = 0;
3327 }
3328
3329 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3330 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3331                                        struct iwl3945_rx_mem_buffer *rxb)
3332 {
3333         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3334         struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3335
3336         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3337                        scan_notif->scanned_channels,
3338                        scan_notif->tsf_low,
3339                        scan_notif->tsf_high, scan_notif->status);
3340
3341         /* The HW is no longer scanning */
3342         clear_bit(STATUS_SCAN_HW, &priv->status);
3343
3344         /* The scan completion notification came in, so kill that timer... */
3345         cancel_delayed_work(&priv->scan_check);
3346
3347         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3348                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3349                                                         "2.4" : "5.2",
3350                        jiffies_to_msecs(elapsed_jiffies
3351                                         (priv->scan_pass_start, jiffies)));
3352
3353         /* Remove this scanned band from the list of pending
3354          * bands to scan, band G precedes A in order of scanning
3355          * as seen in iwl3945_bg_request_scan */
3356         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3357                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3358         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
3359                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
3360
3361         /* If a request to abort was given, or the scan did not succeed
3362          * then we reset the scan state machine and terminate,
3363          * re-queuing another scan if one has been requested */
3364         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3365                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3366                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3367         } else {
3368                 /* If there are more bands on this scan pass reschedule */
3369                 if (priv->scan_bands > 0)
3370                         goto reschedule;
3371         }
3372
3373         priv->last_scan_jiffies = jiffies;
3374         priv->next_scan_jiffies = 0;
3375         IWL_DEBUG_INFO("Setting scan to off\n");
3376
3377         clear_bit(STATUS_SCANNING, &priv->status);
3378
3379         IWL_DEBUG_INFO("Scan took %dms\n",
3380                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3381
3382         queue_work(priv->workqueue, &priv->scan_completed);
3383
3384         return;
3385
3386 reschedule:
3387         priv->scan_pass_start = jiffies;
3388         queue_work(priv->workqueue, &priv->request_scan);
3389 }
3390
3391 /* Handle notification from uCode that card's power state is changing
3392  * due to software, hardware, or critical temperature RFKILL */
3393 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3394                                     struct iwl3945_rx_mem_buffer *rxb)
3395 {
3396         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3397         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3398         unsigned long status = priv->status;
3399
3400         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3401                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3402                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3403
3404         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3405                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3406
3407         if (flags & HW_CARD_DISABLED)
3408                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3409         else
3410                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3411
3412
3413         if (flags & SW_CARD_DISABLED)
3414                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3415         else
3416                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3417
3418         iwl3945_scan_cancel(priv);
3419
3420         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3421              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3422             (test_bit(STATUS_RF_KILL_SW, &status) !=
3423              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3424                 queue_work(priv->workqueue, &priv->rf_kill);
3425         else
3426                 wake_up_interruptible(&priv->wait_command_queue);
3427 }
3428
3429 /**
3430  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3431  *
3432  * Setup the RX handlers for each of the reply types sent from the uCode
3433  * to the host.
3434  *
3435  * This function chains into the hardware specific files for them to setup
3436  * any hardware specific handlers as well.
3437  */
3438 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3439 {
3440         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3441         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3442         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3443         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3444         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3445             iwl3945_rx_spectrum_measure_notif;
3446         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3447         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3448             iwl3945_rx_pm_debug_statistics_notif;
3449         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3450
3451         /*
3452          * The same handler is used for both the REPLY to a discrete
3453          * statistics request from the host as well as for the periodic
3454          * statistics notifications (after received beacons) from the uCode.
3455          */
3456         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3457         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3458
3459         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3460         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3461         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3462             iwl3945_rx_scan_results_notif;
3463         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3464             iwl3945_rx_scan_complete_notif;
3465         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3466
3467         /* Set up hardware specific Rx handlers */
3468         iwl3945_hw_rx_handler_setup(priv);
3469 }
3470
3471 /**
3472  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3473  * When FW advances 'R' index, all entries between old and new 'R' index
3474  * need to be reclaimed.
3475  */
3476 static void iwl3945_cmd_queue_reclaim(struct iwl3945_priv *priv,
3477                                       int txq_id, int index)
3478 {
3479         struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3480         struct iwl3945_queue *q = &txq->q;
3481         int nfreed = 0;
3482
3483         if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3484                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3485                           "is out of range [0-%d] %d %d.\n", txq_id,
3486                           index, q->n_bd, q->write_ptr, q->read_ptr);
3487                 return;
3488         }
3489
3490         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3491                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3492                 if (nfreed > 1) {
3493                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3494                                         q->write_ptr, q->read_ptr);
3495                         queue_work(priv->workqueue, &priv->restart);
3496                         break;
3497                 }
3498                 nfreed++;
3499         }
3500 }
3501
3502
3503 /**
3504  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3505  * @rxb: Rx buffer to reclaim
3506  *
3507  * If an Rx buffer has an async callback associated with it the callback
3508  * will be executed.  The attached skb (if present) will only be freed
3509  * if the callback returns 1
3510  */
3511 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3512                                 struct iwl3945_rx_mem_buffer *rxb)
3513 {
3514         struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3515         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3516         int txq_id = SEQ_TO_QUEUE(sequence);
3517         int index = SEQ_TO_INDEX(sequence);
3518         int huge = sequence & SEQ_HUGE_FRAME;
3519         int cmd_index;
3520         struct iwl3945_cmd *cmd;
3521
3522         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3523
3524         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3525         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3526
3527         /* Input error checking is done when commands are added to queue. */
3528         if (cmd->meta.flags & CMD_WANT_SKB) {
3529                 cmd->meta.source->u.skb = rxb->skb;
3530                 rxb->skb = NULL;
3531         } else if (cmd->meta.u.callback &&
3532                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3533                 rxb->skb = NULL;
3534
3535         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
3536
3537         if (!(cmd->meta.flags & CMD_ASYNC)) {
3538                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3539                 wake_up_interruptible(&priv->wait_command_queue);
3540         }
3541 }
3542
3543 /************************** RX-FUNCTIONS ****************************/
3544 /*
3545  * Rx theory of operation
3546  *
3547  * The host allocates 32 DMA target addresses and passes the host address
3548  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3549  * 0 to 31
3550  *
3551  * Rx Queue Indexes
3552  * The host/firmware share two index registers for managing the Rx buffers.
3553  *
3554  * The READ index maps to the first position that the firmware may be writing
3555  * to -- the driver can read up to (but not including) this position and get
3556  * good data.
3557  * The READ index is managed by the firmware once the card is enabled.
3558  *
3559  * The WRITE index maps to the last position the driver has read from -- the
3560  * position preceding WRITE is the last slot the firmware can place a packet.
3561  *
3562  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3563  * WRITE = READ.
3564  *
3565  * During initialization, the host sets up the READ queue position to the first
3566  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3567  *
3568  * When the firmware places a packet in a buffer, it will advance the READ index
3569  * and fire the RX interrupt.  The driver can then query the READ index and
3570  * process as many packets as possible, moving the WRITE index forward as it
3571  * resets the Rx queue buffers with new memory.
3572  *
3573  * The management in the driver is as follows:
3574  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3575  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3576  *   to replenish the iwl->rxq->rx_free.
3577  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3578  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3579  *   'processed' and 'read' driver indexes as well)
3580  * + A received packet is processed and handed to the kernel network stack,
3581  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3582  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3583  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3584  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3585  *   were enough free buffers and RX_STALLED is set it is cleared.
3586  *
3587  *
3588  * Driver sequence:
3589  *
3590  * iwl3945_rx_queue_alloc()   Allocates rx_free
3591  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3592  *                            iwl3945_rx_queue_restock
3593  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3594  *                            queue, updates firmware pointers, and updates
3595  *                            the WRITE index.  If insufficient rx_free buffers
3596  *                            are available, schedules iwl3945_rx_replenish
3597  *
3598  * -- enable interrupts --
3599  * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
3600  *                            READ INDEX, detaching the SKB from the pool.
3601  *                            Moves the packet buffer from queue to rx_used.
3602  *                            Calls iwl3945_rx_queue_restock to refill any empty
3603  *                            slots.
3604  * ...
3605  *
3606  */
3607
3608 /**
3609  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3610  */
3611 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3612 {
3613         int s = q->read - q->write;
3614         if (s <= 0)
3615                 s += RX_QUEUE_SIZE;
3616         /* keep some buffer to not confuse full and empty queue */
3617         s -= 2;
3618         if (s < 0)
3619                 s = 0;
3620         return s;
3621 }
3622
3623 /**
3624  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3625  */
3626 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
3627 {
3628         u32 reg = 0;
3629         int rc = 0;
3630         unsigned long flags;
3631
3632         spin_lock_irqsave(&q->lock, flags);
3633
3634         if (q->need_update == 0)
3635                 goto exit_unlock;
3636
3637         /* If power-saving is in use, make sure device is awake */
3638         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3639                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3640
3641                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3642                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
3643                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3644                         goto exit_unlock;
3645                 }
3646
3647                 rc = iwl3945_grab_nic_access(priv);
3648                 if (rc)
3649                         goto exit_unlock;
3650
3651                 /* Device expects a multiple of 8 */
3652                 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3653                                      q->write & ~0x7);
3654                 iwl3945_release_nic_access(priv);
3655
3656         /* Else device is assumed to be awake */
3657         } else
3658                 /* Device expects a multiple of 8 */
3659                 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3660
3661
3662         q->need_update = 0;
3663
3664  exit_unlock:
3665         spin_unlock_irqrestore(&q->lock, flags);
3666         return rc;
3667 }
3668
3669 /**
3670  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3671  */
3672 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
3673                                           dma_addr_t dma_addr)
3674 {
3675         return cpu_to_le32((u32)dma_addr);
3676 }
3677
3678 /**
3679  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3680  *
3681  * If there are slots in the RX queue that need to be restocked,
3682  * and we have free pre-allocated buffers, fill the ranks as much
3683  * as we can, pulling from rx_free.
3684  *
3685  * This moves the 'write' index forward to catch up with 'processed', and
3686  * also updates the memory address in the firmware to reference the new
3687  * target buffer.
3688  */
3689 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
3690 {
3691         struct iwl3945_rx_queue *rxq = &priv->rxq;
3692         struct list_head *element;
3693         struct iwl3945_rx_mem_buffer *rxb;
3694         unsigned long flags;
3695         int write, rc;
3696
3697         spin_lock_irqsave(&rxq->lock, flags);
3698         write = rxq->write & ~0x7;
3699         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3700                 /* Get next free Rx buffer, remove from free list */
3701                 element = rxq->rx_free.next;
3702                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3703                 list_del(element);
3704
3705                 /* Point to Rx buffer via next RBD in circular buffer */
3706                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3707                 rxq->queue[rxq->write] = rxb;
3708                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3709                 rxq->free_count--;
3710         }
3711         spin_unlock_irqrestore(&rxq->lock, flags);
3712         /* If the pre-allocated buffer pool is dropping low, schedule to
3713          * refill it */
3714         if (rxq->free_count <= RX_LOW_WATERMARK)
3715                 queue_work(priv->workqueue, &priv->rx_replenish);
3716
3717
3718         /* If we've added more space for the firmware to place data, tell it.
3719          * Increment device's write pointer in multiples of 8. */
3720         if ((write != (rxq->write & ~0x7))
3721             || (abs(rxq->write - rxq->read) > 7)) {
3722                 spin_lock_irqsave(&rxq->lock, flags);
3723                 rxq->need_update = 1;
3724                 spin_unlock_irqrestore(&rxq->lock, flags);
3725                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3726                 if (rc)
3727                         return rc;
3728         }
3729
3730         return 0;
3731 }
3732
3733 /**
3734  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3735  *
3736  * When moving to rx_free an SKB is allocated for the slot.
3737  *
3738  * Also restock the Rx queue via iwl3945_rx_queue_restock.
3739  * This is called as a scheduled work item (except for during initialization)
3740  */
3741 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
3742 {
3743         struct iwl3945_rx_queue *rxq = &priv->rxq;
3744         struct list_head *element;
3745         struct iwl3945_rx_mem_buffer *rxb;
3746         unsigned long flags;
3747         spin_lock_irqsave(&rxq->lock, flags);
3748         while (!list_empty(&rxq->rx_used)) {
3749                 element = rxq->rx_used.next;
3750                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3751
3752                 /* Alloc a new receive buffer */
3753                 rxb->skb =
3754                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3755                 if (!rxb->skb) {
3756                         if (net_ratelimit())
3757                                 printk(KERN_CRIT DRV_NAME
3758                                        ": Can not allocate SKB buffers\n");
3759                         /* We don't reschedule replenish work here -- we will
3760                          * call the restock method and if it still needs
3761                          * more buffers it will schedule replenish */
3762                         break;
3763                 }
3764
3765                 /* If radiotap head is required, reserve some headroom here.
3766                  * The physical head count is a variable rx_stats->phy_count.
3767                  * We reserve 4 bytes here. Plus these extra bytes, the
3768                  * headroom of the physical head should be enough for the
3769                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3770                  */
3771                 skb_reserve(rxb->skb, 4);
3772
3773                 priv->alloc_rxb_skb++;
3774                 list_del(element);
3775
3776                 /* Get physical address of RB/SKB */
3777                 rxb->dma_addr =
3778                     pci_map_single(priv->pci_dev, rxb->skb->data,
3779                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3780                 list_add_tail(&rxb->list, &rxq->rx_free);
3781                 rxq->free_count++;
3782         }
3783         spin_unlock_irqrestore(&rxq->lock, flags);
3784 }
3785
3786 /*
3787  * this should be called while priv->lock is locked
3788  */
3789 static void __iwl3945_rx_replenish(void *data)
3790 {
3791         struct iwl3945_priv *priv = data;
3792
3793         iwl3945_rx_allocate(priv);
3794         iwl3945_rx_queue_restock(priv);
3795 }
3796
3797
3798 void iwl3945_rx_replenish(void *data)
3799 {
3800         struct iwl3945_priv *priv = data;
3801         unsigned long flags;
3802
3803         iwl3945_rx_allocate(priv);
3804
3805         spin_lock_irqsave(&priv->lock, flags);
3806         iwl3945_rx_queue_restock(priv);
3807         spin_unlock_irqrestore(&priv->lock, flags);
3808 }
3809
3810 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3811  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3812  * This free routine walks the list of POOL entries and if SKB is set to
3813  * non NULL it is unmapped and freed
3814  */
3815 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3816 {
3817         int i;
3818         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3819                 if (rxq->pool[i].skb != NULL) {
3820                         pci_unmap_single(priv->pci_dev,
3821                                          rxq->pool[i].dma_addr,
3822                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3823                         dev_kfree_skb(rxq->pool[i].skb);
3824                 }
3825         }
3826
3827         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3828                             rxq->dma_addr);
3829         rxq->bd = NULL;
3830 }
3831
3832 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
3833 {
3834         struct iwl3945_rx_queue *rxq = &priv->rxq;
3835         struct pci_dev *dev = priv->pci_dev;
3836         int i;
3837
3838         spin_lock_init(&rxq->lock);
3839         INIT_LIST_HEAD(&rxq->rx_free);
3840         INIT_LIST_HEAD(&rxq->rx_used);
3841
3842         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3843         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3844         if (!rxq->bd)
3845                 return -ENOMEM;
3846
3847         /* Fill the rx_used queue with _all_ of the Rx buffers */
3848         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3849                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3850
3851         /* Set us so that we have processed and used all buffers, but have
3852          * not restocked the Rx queue with fresh buffers */
3853         rxq->read = rxq->write = 0;
3854         rxq->free_count = 0;
3855         rxq->need_update = 0;
3856         return 0;
3857 }
3858
3859 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3860 {
3861         unsigned long flags;
3862         int i;
3863         spin_lock_irqsave(&rxq->lock, flags);
3864         INIT_LIST_HEAD(&rxq->rx_free);
3865         INIT_LIST_HEAD(&rxq->rx_used);
3866         /* Fill the rx_used queue with _all_ of the Rx buffers */
3867         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3868                 /* In the reset function, these buffers may have been allocated
3869                  * to an SKB, so we need to unmap and free potential storage */
3870                 if (rxq->pool[i].skb != NULL) {
3871                         pci_unmap_single(priv->pci_dev,
3872                                          rxq->pool[i].dma_addr,
3873                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3874                         priv->alloc_rxb_skb--;
3875                         dev_kfree_skb(rxq->pool[i].skb);
3876                         rxq->pool[i].skb = NULL;
3877                 }
3878                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3879         }
3880
3881         /* Set us so that we have processed and used all buffers, but have
3882          * not restocked the Rx queue with fresh buffers */
3883         rxq->read = rxq->write = 0;
3884         rxq->free_count = 0;
3885         spin_unlock_irqrestore(&rxq->lock, flags);
3886 }
3887
3888 /* Convert linear signal-to-noise ratio into dB */
3889 static u8 ratio2dB[100] = {
3890 /*       0   1   2   3   4   5   6   7   8   9 */
3891          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3892         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3893         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3894         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3895         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3896         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3897         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3898         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3899         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3900         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3901 };
3902
3903 /* Calculates a relative dB value from a ratio of linear
3904  *   (i.e. not dB) signal levels.
3905  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3906 int iwl3945_calc_db_from_ratio(int sig_ratio)
3907 {
3908         /* 1000:1 or higher just report as 60 dB */
3909         if (sig_ratio >= 1000)
3910                 return 60;
3911
3912         /* 100:1 or higher, divide by 10 and use table,
3913          *   add 20 dB to make up for divide by 10 */
3914         if (sig_ratio >= 100)
3915                 return (20 + (int)ratio2dB[sig_ratio/10]);
3916
3917         /* We shouldn't see this */
3918         if (sig_ratio < 1)
3919                 return 0;
3920
3921         /* Use table for ratios 1:1 - 99:1 */
3922         return (int)ratio2dB[sig_ratio];
3923 }
3924
3925 #define PERFECT_RSSI (-20) /* dBm */
3926 #define WORST_RSSI (-95)   /* dBm */
3927 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3928
3929 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3930  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3931  *   about formulas used below. */
3932 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3933 {
3934         int sig_qual;
3935         int degradation = PERFECT_RSSI - rssi_dbm;
3936
3937         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3938          * as indicator; formula is (signal dbm - noise dbm).
3939          * SNR at or above 40 is a great signal (100%).
3940          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3941          * Weakest usable signal is usually 10 - 15 dB SNR. */
3942         if (noise_dbm) {
3943                 if (rssi_dbm - noise_dbm >= 40)
3944                         return 100;
3945                 else if (rssi_dbm < noise_dbm)
3946                         return 0;
3947                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3948
3949         /* Else use just the signal level.
3950          * This formula is a least squares fit of data points collected and
3951          *   compared with a reference system that had a percentage (%) display
3952          *   for signal quality. */
3953         } else
3954                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3955                             (15 * RSSI_RANGE + 62 * degradation)) /
3956                            (RSSI_RANGE * RSSI_RANGE);
3957
3958         if (sig_qual > 100)
3959                 sig_qual = 100;
3960         else if (sig_qual < 1)
3961                 sig_qual = 0;
3962
3963         return sig_qual;
3964 }
3965
3966 /**
3967  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3968  *
3969  * Uses the priv->rx_handlers callback function array to invoke
3970  * the appropriate handlers, including command responses,
3971  * frame-received notifications, and other notifications.
3972  */
3973 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
3974 {
3975         struct iwl3945_rx_mem_buffer *rxb;
3976         struct iwl3945_rx_packet *pkt;
3977         struct iwl3945_rx_queue *rxq = &priv->rxq;
3978         u32 r, i;
3979         int reclaim;
3980         unsigned long flags;
3981         u8 fill_rx = 0;
3982         u32 count = 8;
3983
3984         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3985          * buffer that the driver may process (last buffer filled by ucode). */
3986         r = iwl3945_hw_get_rx_read(priv);
3987         i = rxq->read;
3988
3989         if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3990                 fill_rx = 1;
3991         /* Rx interrupt, but nothing sent from uCode */
3992         if (i == r)
3993                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3994
3995         while (i != r) {
3996                 rxb = rxq->queue[i];
3997
3998                 /* If an RXB doesn't have a Rx queue slot associated with it,
3999                  * then a bug has been introduced in the queue refilling
4000                  * routines -- catch it here */
4001                 BUG_ON(rxb == NULL);
4002
4003                 rxq->queue[i] = NULL;
4004
4005                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4006                                             IWL_RX_BUF_SIZE,
4007                                             PCI_DMA_FROMDEVICE);
4008                 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
4009
4010                 /* Reclaim a command buffer only if this packet is a response
4011                  *   to a (driver-originated) command.
4012                  * If the packet (e.g. Rx frame) originated from uCode,
4013                  *   there is no command buffer to reclaim.
4014                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4015                  *   but apparently a few don't get set; catch them here. */
4016                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4017                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4018                         (pkt->hdr.cmd != REPLY_TX);
4019
4020                 /* Based on type of command response or notification,
4021                  *   handle those that need handling via function in
4022                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
4023                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4024                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4025                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4026                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4027                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4028                 } else {
4029                         /* No handling needed */
4030                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4031                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4032                                 r, i, get_cmd_string(pkt->hdr.cmd),
4033                                 pkt->hdr.cmd);
4034                 }
4035
4036                 if (reclaim) {
4037                         /* Invoke any callbacks, transfer the skb to caller, and
4038                          * fire off the (possibly) blocking iwl3945_send_cmd()
4039                          * as we reclaim the driver command queue */
4040                         if (rxb && rxb->skb)
4041                                 iwl3945_tx_cmd_complete(priv, rxb);
4042                         else
4043                                 IWL_WARNING("Claim null rxb?\n");
4044                 }
4045
4046                 /* For now we just don't re-use anything.  We can tweak this
4047                  * later to try and re-use notification packets and SKBs that
4048                  * fail to Rx correctly */
4049                 if (rxb->skb != NULL) {
4050                         priv->alloc_rxb_skb--;
4051                         dev_kfree_skb_any(rxb->skb);
4052                         rxb->skb = NULL;
4053                 }
4054
4055                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4056                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4057                 spin_lock_irqsave(&rxq->lock, flags);
4058                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4059                 spin_unlock_irqrestore(&rxq->lock, flags);
4060                 i = (i + 1) & RX_QUEUE_MASK;
4061                 /* If there are a lot of unused frames,
4062                  * restock the Rx queue so ucode won't assert. */
4063                 if (fill_rx) {
4064                         count++;
4065                         if (count >= 8) {
4066                                 priv->rxq.read = i;
4067                                 __iwl3945_rx_replenish(priv);
4068                                 count = 0;
4069                         }
4070                 }
4071         }
4072
4073         /* Backtrack one entry */
4074         priv->rxq.read = i;
4075         iwl3945_rx_queue_restock(priv);
4076 }
4077
4078 /**
4079  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
4080  */
4081 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
4082                                   struct iwl3945_tx_queue *txq)
4083 {
4084         u32 reg = 0;
4085         int rc = 0;
4086         int txq_id = txq->q.id;
4087
4088         if (txq->need_update == 0)
4089                 return rc;
4090
4091         /* if we're trying to save power */
4092         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4093                 /* wake up nic if it's powered down ...
4094                  * uCode will wake up, and interrupt us again, so next
4095                  * time we'll skip this part. */
4096                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4097
4098                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4099                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4100                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
4101                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4102                         return rc;
4103                 }
4104
4105                 /* restore this queue's parameters in nic hardware. */
4106                 rc = iwl3945_grab_nic_access(priv);
4107                 if (rc)
4108                         return rc;
4109                 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4110                                      txq->q.write_ptr | (txq_id << 8));
4111                 iwl3945_release_nic_access(priv);
4112
4113         /* else not in power-save mode, uCode will never sleep when we're
4114          * trying to tx (during RFKILL, we're not trying to tx). */
4115         } else
4116                 iwl3945_write32(priv, HBUS_TARG_WRPTR,
4117                             txq->q.write_ptr | (txq_id << 8));
4118
4119         txq->need_update = 0;
4120
4121         return rc;
4122 }
4123
4124 #ifdef CONFIG_IWL3945_DEBUG
4125 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
4126 {
4127         DECLARE_MAC_BUF(mac);
4128
4129         IWL_DEBUG_RADIO("RX CONFIG:\n");
4130         iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4131         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4132         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4133         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4134                         le32_to_cpu(rxon->filter_flags));
4135         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4136         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4137                         rxon->ofdm_basic_rates);
4138         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4139         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4140                         print_mac(mac, rxon->node_addr));
4141         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4142                         print_mac(mac, rxon->bssid_addr));
4143         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4144 }
4145 #endif
4146
4147 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
4148 {
4149         IWL_DEBUG_ISR("Enabling interrupts\n");
4150         set_bit(STATUS_INT_ENABLED, &priv->status);
4151         iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4152 }
4153
4154
4155 /* call this function to flush any scheduled tasklet */
4156 static inline void iwl_synchronize_irq(struct iwl3945_priv *priv)
4157 {
4158         /* wait to make sure we flush pedding tasklet*/
4159         synchronize_irq(priv->pci_dev->irq);
4160         tasklet_kill(&priv->irq_tasklet);
4161 }
4162
4163
4164 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
4165 {
4166         clear_bit(STATUS_INT_ENABLED, &priv->status);
4167
4168         /* disable interrupts from uCode/NIC to host */
4169         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4170
4171         /* acknowledge/clear/reset any interrupts still pending
4172          * from uCode or flow handler (Rx/Tx DMA) */
4173         iwl3945_write32(priv, CSR_INT, 0xffffffff);
4174         iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4175         IWL_DEBUG_ISR("Disabled interrupts\n");
4176 }
4177
4178 static const char *desc_lookup(int i)
4179 {
4180         switch (i) {
4181         case 1:
4182                 return "FAIL";
4183         case 2:
4184                 return "BAD_PARAM";
4185         case 3:
4186                 return "BAD_CHECKSUM";
4187         case 4:
4188                 return "NMI_INTERRUPT";
4189         case 5:
4190                 return "SYSASSERT";
4191         case 6:
4192                 return "FATAL_ERROR";
4193         }
4194
4195         return "UNKNOWN";
4196 }
4197
4198 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4199 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4200
4201 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4202 {
4203         u32 i;
4204         u32 desc, time, count, base, data1;
4205         u32 blink1, blink2, ilink1, ilink2;
4206         int rc;
4207
4208         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4209
4210         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4211                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4212                 return;
4213         }
4214
4215         rc = iwl3945_grab_nic_access(priv);
4216         if (rc) {
4217                 IWL_WARNING("Can not read from adapter at this time.\n");
4218                 return;
4219         }
4220
4221         count = iwl3945_read_targ_mem(priv, base);
4222
4223         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4224                 IWL_ERROR("Start IWL Error Log Dump:\n");
4225                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4226         }
4227
4228         IWL_ERROR("Desc       Time       asrtPC  blink2 "
4229                   "ilink1  nmiPC   Line\n");
4230         for (i = ERROR_START_OFFSET;
4231              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4232              i += ERROR_ELEM_SIZE) {
4233                 desc = iwl3945_read_targ_mem(priv, base + i);
4234                 time =
4235                     iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4236                 blink1 =
4237                     iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4238                 blink2 =
4239                     iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4240                 ilink1 =
4241                     iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4242                 ilink2 =
4243                     iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4244                 data1 =
4245                     iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4246
4247                 IWL_ERROR
4248                     ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4249                      desc_lookup(desc), desc, time, blink1, blink2,
4250                      ilink1, ilink2, data1);
4251         }
4252
4253         iwl3945_release_nic_access(priv);
4254
4255 }
4256
4257 #define EVENT_START_OFFSET  (6 * sizeof(u32))
4258
4259 /**
4260  * iwl3945_print_event_log - Dump error event log to syslog
4261  *
4262  * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4263  */
4264 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4265                                 u32 num_events, u32 mode)
4266 {
4267         u32 i;
4268         u32 base;       /* SRAM byte address of event log header */
4269         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4270         u32 ptr;        /* SRAM byte address of log data */
4271         u32 ev, time, data; /* event log data */
4272
4273         if (num_events == 0)
4274                 return;
4275
4276         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4277
4278         if (mode == 0)
4279                 event_size = 2 * sizeof(u32);
4280         else
4281                 event_size = 3 * sizeof(u32);
4282
4283         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4284
4285         /* "time" is actually "data" for mode 0 (no timestamp).
4286          * place event id # at far right for easier visual parsing. */
4287         for (i = 0; i < num_events; i++) {
4288                 ev = iwl3945_read_targ_mem(priv, ptr);
4289                 ptr += sizeof(u32);
4290                 time = iwl3945_read_targ_mem(priv, ptr);
4291                 ptr += sizeof(u32);
4292                 if (mode == 0)
4293                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4294                 else {
4295                         data = iwl3945_read_targ_mem(priv, ptr);
4296                         ptr += sizeof(u32);
4297                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4298                 }
4299         }
4300 }
4301
4302 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4303 {
4304         int rc;
4305         u32 base;       /* SRAM byte address of event log header */
4306         u32 capacity;   /* event log capacity in # entries */
4307         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4308         u32 num_wraps;  /* # times uCode wrapped to top of log */
4309         u32 next_entry; /* index of next entry to be written by uCode */
4310         u32 size;       /* # entries that we'll print */
4311
4312         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4313         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4314                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4315                 return;
4316         }
4317
4318         rc = iwl3945_grab_nic_access(priv);
4319         if (rc) {
4320                 IWL_WARNING("Can not read from adapter at this time.\n");
4321                 return;
4322         }
4323
4324         /* event log header */
4325         capacity = iwl3945_read_targ_mem(priv, base);
4326         mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4327         num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4328         next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4329
4330         size = num_wraps ? capacity : next_entry;
4331
4332         /* bail out if nothing in log */
4333         if (size == 0) {
4334                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4335                 iwl3945_release_nic_access(priv);
4336                 return;
4337         }
4338
4339         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4340                   size, num_wraps);
4341
4342         /* if uCode has wrapped back to top of log, start at the oldest entry,
4343          * i.e the next one that uCode would fill. */
4344         if (num_wraps)
4345                 iwl3945_print_event_log(priv, next_entry,
4346                                     capacity - next_entry, mode);
4347
4348         /* (then/else) start at top of log */
4349         iwl3945_print_event_log(priv, 0, next_entry, mode);
4350
4351         iwl3945_release_nic_access(priv);
4352 }
4353
4354 /**
4355  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4356  */
4357 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4358 {
4359         /* Set the FW error flag -- cleared on iwl3945_down */
4360         set_bit(STATUS_FW_ERROR, &priv->status);
4361
4362         /* Cancel currently queued command. */
4363         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4364
4365 #ifdef CONFIG_IWL3945_DEBUG
4366         if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4367                 iwl3945_dump_nic_error_log(priv);
4368                 iwl3945_dump_nic_event_log(priv);
4369                 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
4370         }
4371 #endif
4372
4373         wake_up_interruptible(&priv->wait_command_queue);
4374
4375         /* Keep the restart process from trying to send host
4376          * commands by clearing the INIT status bit */
4377         clear_bit(STATUS_READY, &priv->status);
4378
4379         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4380                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4381                           "Restarting adapter due to uCode error.\n");
4382
4383                 if (iwl3945_is_associated(priv)) {
4384                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4385                                sizeof(priv->recovery_rxon));
4386                         priv->error_recovering = 1;
4387                 }
4388                 queue_work(priv->workqueue, &priv->restart);
4389         }
4390 }
4391
4392 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4393 {
4394         unsigned long flags;
4395
4396         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4397                sizeof(priv->staging_rxon));
4398         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4399         iwl3945_commit_rxon(priv);
4400
4401         iwl3945_add_station(priv, priv->bssid, 1, 0);
4402
4403         spin_lock_irqsave(&priv->lock, flags);
4404         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4405         priv->error_recovering = 0;
4406         spin_unlock_irqrestore(&priv->lock, flags);
4407 }
4408
4409 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4410 {
4411         u32 inta, handled = 0;
4412         u32 inta_fh;
4413         unsigned long flags;
4414 #ifdef CONFIG_IWL3945_DEBUG
4415         u32 inta_mask;
4416 #endif
4417
4418         spin_lock_irqsave(&priv->lock, flags);
4419
4420         /* Ack/clear/reset pending uCode interrupts.
4421          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4422          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4423         inta = iwl3945_read32(priv, CSR_INT);
4424         iwl3945_write32(priv, CSR_INT, inta);
4425
4426         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4427          * Any new interrupts that happen after this, either while we're
4428          * in this tasklet, or later, will show up in next ISR/tasklet. */
4429         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4430         iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4431
4432 #ifdef CONFIG_IWL3945_DEBUG
4433         if (iwl3945_debug_level & IWL_DL_ISR) {
4434                 /* just for debug */
4435                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4436                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4437                               inta, inta_mask, inta_fh);
4438         }
4439 #endif
4440
4441         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4442          * atomic, make sure that inta covers all the interrupts that
4443          * we've discovered, even if FH interrupt came in just after
4444          * reading CSR_INT. */
4445         if (inta_fh & CSR39_FH_INT_RX_MASK)
4446                 inta |= CSR_INT_BIT_FH_RX;
4447         if (inta_fh & CSR39_FH_INT_TX_MASK)
4448                 inta |= CSR_INT_BIT_FH_TX;
4449
4450         /* Now service all interrupt bits discovered above. */
4451         if (inta & CSR_INT_BIT_HW_ERR) {
4452                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4453
4454                 /* Tell the device to stop sending interrupts */
4455                 iwl3945_disable_interrupts(priv);
4456
4457                 iwl3945_irq_handle_error(priv);
4458
4459                 handled |= CSR_INT_BIT_HW_ERR;
4460
4461                 spin_unlock_irqrestore(&priv->lock, flags);
4462
4463                 return;
4464         }
4465
4466 #ifdef CONFIG_IWL3945_DEBUG
4467         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4468                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4469                 if (inta & CSR_INT_BIT_SCD)
4470                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4471                                       "the frame/frames.\n");
4472
4473                 /* Alive notification via Rx interrupt will do the real work */
4474                 if (inta & CSR_INT_BIT_ALIVE)
4475                         IWL_DEBUG_ISR("Alive interrupt\n");
4476         }
4477 #endif
4478         /* Safely ignore these bits for debug checks below */
4479         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4480
4481         /* HW RF KILL switch toggled (4965 only) */
4482         if (inta & CSR_INT_BIT_RF_KILL) {
4483                 int hw_rf_kill = 0;
4484                 if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
4485                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4486                         hw_rf_kill = 1;
4487
4488                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4489                                 "RF_KILL bit toggled to %s.\n",
4490                                 hw_rf_kill ? "disable radio":"enable radio");
4491
4492                 /* Queue restart only if RF_KILL switch was set to "kill"
4493                  *   when we loaded driver, and is now set to "enable".
4494                  * After we're Alive, RF_KILL gets handled by
4495                  *   iwl3945_rx_card_state_notif() */
4496                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4497                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4498                         queue_work(priv->workqueue, &priv->restart);
4499                 }
4500
4501                 handled |= CSR_INT_BIT_RF_KILL;
4502         }
4503
4504         /* Chip got too hot and stopped itself (4965 only) */
4505         if (inta & CSR_INT_BIT_CT_KILL) {
4506                 IWL_ERROR("Microcode CT kill error detected.\n");
4507                 handled |= CSR_INT_BIT_CT_KILL;
4508         }
4509
4510         /* Error detected by uCode */
4511         if (inta & CSR_INT_BIT_SW_ERR) {
4512                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4513                           inta);
4514                 iwl3945_irq_handle_error(priv);
4515                 handled |= CSR_INT_BIT_SW_ERR;
4516         }
4517
4518         /* uCode wakes up after power-down sleep */
4519         if (inta & CSR_INT_BIT_WAKEUP) {
4520                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4521                 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4522                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4523                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4524                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4525                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4526                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4527                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4528
4529                 handled |= CSR_INT_BIT_WAKEUP;
4530         }
4531
4532         /* All uCode command responses, including Tx command responses,
4533          * Rx "responses" (frame-received notification), and other
4534          * notifications from uCode come through here*/
4535         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4536                 iwl3945_rx_handle(priv);
4537                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4538         }
4539
4540         if (inta & CSR_INT_BIT_FH_TX) {
4541                 IWL_DEBUG_ISR("Tx interrupt\n");
4542
4543                 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4544                 if (!iwl3945_grab_nic_access(priv)) {
4545                         iwl3945_write_direct32(priv,
4546                                              FH_TCSR_CREDIT
4547                                              (ALM_FH_SRVC_CHNL), 0x0);
4548                         iwl3945_release_nic_access(priv);
4549                 }
4550                 handled |= CSR_INT_BIT_FH_TX;
4551         }
4552
4553         if (inta & ~handled)
4554                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4555
4556         if (inta & ~CSR_INI_SET_MASK) {
4557                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4558                          inta & ~CSR_INI_SET_MASK);
4559                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4560         }
4561
4562         /* Re-enable all interrupts */
4563         /* only Re-enable if disabled by irq */
4564         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4565                 iwl3945_enable_interrupts(priv);
4566
4567 #ifdef CONFIG_IWL3945_DEBUG
4568         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4569                 inta = iwl3945_read32(priv, CSR_INT);
4570                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4571                 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4572                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4573                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4574         }
4575 #endif
4576         spin_unlock_irqrestore(&priv->lock, flags);
4577 }
4578
4579 static irqreturn_t iwl3945_isr(int irq, void *data)
4580 {
4581         struct iwl3945_priv *priv = data;
4582         u32 inta, inta_mask;
4583         u32 inta_fh;
4584         if (!priv)
4585                 return IRQ_NONE;
4586
4587         spin_lock(&priv->lock);
4588
4589         /* Disable (but don't clear!) interrupts here to avoid
4590          *    back-to-back ISRs and sporadic interrupts from our NIC.
4591          * If we have something to service, the tasklet will re-enable ints.
4592          * If we *don't* have something, we'll re-enable before leaving here. */
4593         inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
4594         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4595
4596         /* Discover which interrupts are active/pending */
4597         inta = iwl3945_read32(priv, CSR_INT);
4598         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4599
4600         /* Ignore interrupt if there's nothing in NIC to service.
4601          * This may be due to IRQ shared with another device,
4602          * or due to sporadic interrupts thrown from our NIC. */
4603         if (!inta && !inta_fh) {
4604                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4605                 goto none;
4606         }
4607
4608         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4609                 /* Hardware disappeared */
4610                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4611                 goto unplugged;
4612         }
4613
4614         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4615                       inta, inta_mask, inta_fh);
4616
4617         inta &= ~CSR_INT_BIT_SCD;
4618
4619         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4620         if (likely(inta || inta_fh))
4621                 tasklet_schedule(&priv->irq_tasklet);
4622 unplugged:
4623         spin_unlock(&priv->lock);
4624
4625         return IRQ_HANDLED;
4626
4627  none:
4628         /* re-enable interrupts here since we don't have anything to service. */
4629         /* only Re-enable if disabled by irq */
4630         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4631                 iwl3945_enable_interrupts(priv);
4632         spin_unlock(&priv->lock);
4633         return IRQ_NONE;
4634 }
4635
4636 /************************** EEPROM BANDS ****************************
4637  *
4638  * The iwl3945_eeprom_band definitions below provide the mapping from the
4639  * EEPROM contents to the specific channel number supported for each
4640  * band.
4641  *
4642  * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
4643  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4644  * The specific geography and calibration information for that channel
4645  * is contained in the eeprom map itself.
4646  *
4647  * During init, we copy the eeprom information and channel map
4648  * information into priv->channel_info_24/52 and priv->channel_map_24/52
4649  *
4650  * channel_map_24/52 provides the index in the channel_info array for a
4651  * given channel.  We have to have two separate maps as there is channel
4652  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4653  * band_2
4654  *
4655  * A value of 0xff stored in the channel_map indicates that the channel
4656  * is not supported by the hardware at all.
4657  *
4658  * A value of 0xfe in the channel_map indicates that the channel is not
4659  * valid for Tx with the current hardware.  This means that
4660  * while the system can tune and receive on a given channel, it may not
4661  * be able to associate or transmit any frames on that
4662  * channel.  There is no corresponding channel information for that
4663  * entry.
4664  *
4665  *********************************************************************/
4666
4667 /* 2.4 GHz */
4668 static const u8 iwl3945_eeprom_band_1[14] = {
4669         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4670 };
4671
4672 /* 5.2 GHz bands */
4673 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
4674         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4675 };
4676
4677 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
4678         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4679 };
4680
4681 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
4682         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4683 };
4684
4685 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
4686         145, 149, 153, 157, 161, 165
4687 };
4688
4689 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
4690                                     int *eeprom_ch_count,
4691                                     const struct iwl3945_eeprom_channel
4692                                     **eeprom_ch_info,
4693                                     const u8 **eeprom_ch_index)
4694 {
4695         switch (band) {
4696         case 1:         /* 2.4GHz band */
4697                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4698                 *eeprom_ch_info = priv->eeprom.band_1_channels;
4699                 *eeprom_ch_index = iwl3945_eeprom_band_1;
4700                 break;
4701         case 2:         /* 4.9GHz band */
4702                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4703                 *eeprom_ch_info = priv->eeprom.band_2_channels;
4704                 *eeprom_ch_index = iwl3945_eeprom_band_2;
4705                 break;
4706         case 3:         /* 5.2GHz band */
4707                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4708                 *eeprom_ch_info = priv->eeprom.band_3_channels;
4709                 *eeprom_ch_index = iwl3945_eeprom_band_3;
4710                 break;
4711         case 4:         /* 5.5GHz band */
4712                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4713                 *eeprom_ch_info = priv->eeprom.band_4_channels;
4714                 *eeprom_ch_index = iwl3945_eeprom_band_4;
4715                 break;
4716         case 5:         /* 5.7GHz band */
4717                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4718                 *eeprom_ch_info = priv->eeprom.band_5_channels;
4719                 *eeprom_ch_index = iwl3945_eeprom_band_5;
4720                 break;
4721         default:
4722                 BUG();
4723                 return;
4724         }
4725 }
4726
4727 /**
4728  * iwl3945_get_channel_info - Find driver's private channel info
4729  *
4730  * Based on band and channel number.
4731  */
4732 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4733                                                     enum ieee80211_band band, u16 channel)
4734 {
4735         int i;
4736
4737         switch (band) {
4738         case IEEE80211_BAND_5GHZ:
4739                 for (i = 14; i < priv->channel_count; i++) {
4740                         if (priv->channel_info[i].channel == channel)
4741                                 return &priv->channel_info[i];
4742                 }
4743                 break;
4744
4745         case IEEE80211_BAND_2GHZ:
4746                 if (channel >= 1 && channel <= 14)
4747                         return &priv->channel_info[channel - 1];
4748                 break;
4749         case IEEE80211_NUM_BANDS:
4750                 WARN_ON(1);
4751         }
4752
4753         return NULL;
4754 }
4755
4756 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4757                             ? # x " " : "")
4758
4759 /**
4760  * iwl3945_init_channel_map - Set up driver's info for all possible channels
4761  */
4762 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
4763 {
4764         int eeprom_ch_count = 0;
4765         const u8 *eeprom_ch_index = NULL;
4766         const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
4767         int band, ch;
4768         struct iwl3945_channel_info *ch_info;
4769
4770         if (priv->channel_count) {
4771                 IWL_DEBUG_INFO("Channel map already initialized.\n");
4772                 return 0;
4773         }
4774
4775         if (priv->eeprom.version < 0x2f) {
4776                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
4777                             priv->eeprom.version);
4778                 return -EINVAL;
4779         }
4780
4781         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4782
4783         priv->channel_count =
4784             ARRAY_SIZE(iwl3945_eeprom_band_1) +
4785             ARRAY_SIZE(iwl3945_eeprom_band_2) +
4786             ARRAY_SIZE(iwl3945_eeprom_band_3) +
4787             ARRAY_SIZE(iwl3945_eeprom_band_4) +
4788             ARRAY_SIZE(iwl3945_eeprom_band_5);
4789
4790         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4791
4792         priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
4793                                      priv->channel_count, GFP_KERNEL);
4794         if (!priv->channel_info) {
4795                 IWL_ERROR("Could not allocate channel_info\n");
4796                 priv->channel_count = 0;
4797                 return -ENOMEM;
4798         }
4799
4800         ch_info = priv->channel_info;
4801
4802         /* Loop through the 5 EEPROM bands adding them in order to the
4803          * channel map we maintain (that contains additional information than
4804          * what just in the EEPROM) */
4805         for (band = 1; band <= 5; band++) {
4806
4807                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4808                                         &eeprom_ch_info, &eeprom_ch_index);
4809
4810                 /* Loop through each band adding each of the channels */
4811                 for (ch = 0; ch < eeprom_ch_count; ch++) {
4812                         ch_info->channel = eeprom_ch_index[ch];
4813                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4814                             IEEE80211_BAND_5GHZ;
4815
4816                         /* permanently store EEPROM's channel regulatory flags
4817                          *   and max power in channel info database. */
4818                         ch_info->eeprom = eeprom_ch_info[ch];
4819
4820                         /* Copy the run-time flags so they are there even on
4821                          * invalid channels */
4822                         ch_info->flags = eeprom_ch_info[ch].flags;
4823
4824                         if (!(is_channel_valid(ch_info))) {
4825                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4826                                                "No traffic\n",
4827                                                ch_info->channel,
4828                                                ch_info->flags,
4829                                                is_channel_a_band(ch_info) ?
4830                                                "5.2" : "2.4");
4831                                 ch_info++;
4832                                 continue;
4833                         }
4834
4835                         /* Initialize regulatory-based run-time data */
4836                         ch_info->max_power_avg = ch_info->curr_txpow =
4837                             eeprom_ch_info[ch].max_power_avg;
4838                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4839                         ch_info->min_power = 0;
4840
4841                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
4842                                        " %ddBm): Ad-Hoc %ssupported\n",
4843                                        ch_info->channel,
4844                                        is_channel_a_band(ch_info) ?
4845                                        "5.2" : "2.4",
4846                                        CHECK_AND_PRINT(VALID),
4847                                        CHECK_AND_PRINT(IBSS),
4848                                        CHECK_AND_PRINT(ACTIVE),
4849                                        CHECK_AND_PRINT(RADAR),
4850                                        CHECK_AND_PRINT(WIDE),
4851                                        CHECK_AND_PRINT(DFS),
4852                                        eeprom_ch_info[ch].flags,
4853                                        eeprom_ch_info[ch].max_power_avg,
4854                                        ((eeprom_ch_info[ch].
4855                                          flags & EEPROM_CHANNEL_IBSS)
4856                                         && !(eeprom_ch_info[ch].
4857                                              flags & EEPROM_CHANNEL_RADAR))
4858                                        ? "" : "not ");
4859
4860                         /* Set the user_txpower_limit to the highest power
4861                          * supported by any channel */
4862                         if (eeprom_ch_info[ch].max_power_avg >
4863                             priv->user_txpower_limit)
4864                                 priv->user_txpower_limit =
4865                                     eeprom_ch_info[ch].max_power_avg;
4866
4867                         ch_info++;
4868                 }
4869         }
4870
4871         /* Set up txpower settings in driver for all channels */
4872         if (iwl3945_txpower_set_from_eeprom(priv))
4873                 return -EIO;
4874
4875         return 0;
4876 }
4877
4878 /*
4879  * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4880  */
4881 static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
4882 {
4883         kfree(priv->channel_info);
4884         priv->channel_count = 0;
4885 }
4886
4887 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4888  * sending probe req.  This should be set long enough to hear probe responses
4889  * from more than one AP.  */
4890 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
4891 #define IWL_ACTIVE_DWELL_TIME_52    (10)
4892
4893 /* For faster active scanning, scan will move to the next channel if fewer than
4894  * PLCP_QUIET_THRESH packets are heard on this channel within
4895  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4896  * time if it's a quiet channel (nothing responded to our probe, and there's
4897  * no other traffic).
4898  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4899 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4900 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
4901
4902 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4903  * Must be set longer than active dwell time.
4904  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4905 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4906 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4907 #define IWL_PASSIVE_DWELL_BASE      (100)
4908 #define IWL_CHANNEL_TUNE_TIME       5
4909
4910 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
4911                                                 enum ieee80211_band band)
4912 {
4913         if (band == IEEE80211_BAND_5GHZ)
4914                 return IWL_ACTIVE_DWELL_TIME_52;
4915         else
4916                 return IWL_ACTIVE_DWELL_TIME_24;
4917 }
4918
4919 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
4920                                           enum ieee80211_band band)
4921 {
4922         u16 active = iwl3945_get_active_dwell_time(priv, band);
4923         u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4924             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4925             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4926
4927         if (iwl3945_is_associated(priv)) {
4928                 /* If we're associated, we clamp the maximum passive
4929                  * dwell time to be 98% of the beacon interval (minus
4930                  * 2 * channel tune time) */
4931                 passive = priv->beacon_int;
4932                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4933                         passive = IWL_PASSIVE_DWELL_BASE;
4934                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4935         }
4936
4937         if (passive <= active)
4938                 passive = active + 1;
4939
4940         return passive;
4941 }
4942
4943 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
4944                                          enum ieee80211_band band,
4945                                      u8 is_active, u8 direct_mask,
4946                                      struct iwl3945_scan_channel *scan_ch)
4947 {
4948         const struct ieee80211_channel *channels = NULL;
4949         const struct ieee80211_supported_band *sband;
4950         const struct iwl3945_channel_info *ch_info;
4951         u16 passive_dwell = 0;
4952         u16 active_dwell = 0;
4953         int added, i;
4954
4955         sband = iwl3945_get_band(priv, band);
4956         if (!sband)
4957                 return 0;
4958
4959         channels = sband->channels;
4960
4961         active_dwell = iwl3945_get_active_dwell_time(priv, band);
4962         passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4963
4964         for (i = 0, added = 0; i < sband->n_channels; i++) {
4965                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4966                         continue;
4967
4968                 scan_ch->channel = channels[i].hw_value;
4969
4970                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4971                 if (!is_channel_valid(ch_info)) {
4972                         IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4973                                        scan_ch->channel);
4974                         continue;
4975                 }
4976
4977                 if (!is_active || is_channel_passive(ch_info) ||
4978                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4979                         scan_ch->type = 0;      /* passive */
4980                 else
4981                         scan_ch->type = 1;      /* active */
4982
4983                 if (scan_ch->type & 1)
4984                         scan_ch->type |= (direct_mask << 1);
4985
4986                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4987                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4988
4989                 /* Set txpower levels to defaults */
4990                 scan_ch->tpc.dsp_atten = 110;
4991                 /* scan_pwr_info->tpc.dsp_atten; */
4992
4993                 /*scan_pwr_info->tpc.tx_gain; */
4994                 if (band == IEEE80211_BAND_5GHZ)
4995                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4996                 else {
4997                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4998                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4999                          * power level:
5000                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5001                          */
5002                 }
5003
5004                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5005                                scan_ch->channel,
5006                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5007                                (scan_ch->type & 1) ?
5008                                active_dwell : passive_dwell);
5009
5010                 scan_ch++;
5011                 added++;
5012         }
5013
5014         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5015         return added;
5016 }
5017
5018 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
5019                               struct ieee80211_rate *rates)
5020 {
5021         int i;
5022
5023         for (i = 0; i < IWL_RATE_COUNT; i++) {
5024                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
5025                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5026                 rates[i].hw_value_short = i;
5027                 rates[i].flags = 0;
5028                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5029                         /*
5030                          * If CCK != 1M then set short preamble rate flag.
5031                          */
5032                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5033                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5034                 }
5035         }
5036 }
5037
5038 /**
5039  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
5040  */
5041 static int iwl3945_init_geos(struct iwl3945_priv *priv)
5042 {
5043         struct iwl3945_channel_info *ch;
5044         struct ieee80211_supported_band *sband;
5045         struct ieee80211_channel *channels;
5046         struct ieee80211_channel *geo_ch;
5047         struct ieee80211_rate *rates;
5048         int i = 0;
5049
5050         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5051             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5052                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5053                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5054                 return 0;
5055         }
5056
5057         channels = kzalloc(sizeof(struct ieee80211_channel) *
5058                            priv->channel_count, GFP_KERNEL);
5059         if (!channels)
5060                 return -ENOMEM;
5061
5062         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5063                         GFP_KERNEL);
5064         if (!rates) {
5065                 kfree(channels);
5066                 return -ENOMEM;
5067         }
5068
5069         /* 5.2GHz channels start after the 2.4GHz channels */
5070         sband = &priv->bands[IEEE80211_BAND_5GHZ];
5071         sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
5072         /* just OFDM */
5073         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5074         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5075
5076         sband = &priv->bands[IEEE80211_BAND_2GHZ];
5077         sband->channels = channels;
5078         /* OFDM & CCK */
5079         sband->bitrates = rates;
5080         sband->n_bitrates = IWL_RATE_COUNT;
5081
5082         priv->ieee_channels = channels;
5083         priv->ieee_rates = rates;
5084
5085         iwl3945_init_hw_rates(priv, rates);
5086
5087         for (i = 0;  i < priv->channel_count; i++) {
5088                 ch = &priv->channel_info[i];
5089
5090                 /* FIXME: might be removed if scan is OK*/
5091                 if (!is_channel_valid(ch))
5092                         continue;
5093
5094                 if (is_channel_a_band(ch))
5095                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
5096                 else
5097                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
5098
5099                 geo_ch = &sband->channels[sband->n_channels++];
5100
5101                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5102                 geo_ch->max_power = ch->max_power_avg;
5103                 geo_ch->max_antenna_gain = 0xff;
5104                 geo_ch->hw_value = ch->channel;
5105
5106                 if (is_channel_valid(ch)) {
5107                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5108                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5109
5110                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5111                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5112
5113                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5114                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5115
5116                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5117                                 priv->max_channel_txpower_limit =
5118                                     ch->max_power_avg;
5119                 } else {
5120                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5121                 }
5122
5123                 /* Save flags for reg domain usage */
5124                 geo_ch->orig_flags = geo_ch->flags;
5125
5126                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5127                                 ch->channel, geo_ch->center_freq,
5128                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
5129                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5130                                 "restricted" : "valid",
5131                                  geo_ch->flags);
5132         }
5133
5134         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
5135              priv->cfg->sku & IWL_SKU_A) {
5136                 printk(KERN_INFO DRV_NAME
5137                        ": Incorrectly detected BG card as ABG.  Please send "
5138                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5139                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5140                  priv->cfg->sku &= ~IWL_SKU_A;
5141         }
5142
5143         printk(KERN_INFO DRV_NAME
5144                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5145                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5146                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5147
5148         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
5149                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
5150                         &priv->bands[IEEE80211_BAND_2GHZ];
5151         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
5152                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
5153                         &priv->bands[IEEE80211_BAND_5GHZ];
5154
5155         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5156
5157         return 0;
5158 }
5159
5160 /*
5161  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
5162  */
5163 static void iwl3945_free_geos(struct iwl3945_priv *priv)
5164 {
5165         kfree(priv->ieee_channels);
5166         kfree(priv->ieee_rates);
5167         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5168 }
5169
5170 /******************************************************************************
5171  *
5172  * uCode download functions
5173  *
5174  ******************************************************************************/
5175
5176 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
5177 {
5178         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5179         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5180         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5181         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5182         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5183         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5184 }
5185
5186 /**
5187  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5188  *     looking at all data.
5189  */
5190 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
5191 {
5192         u32 val;
5193         u32 save_len = len;
5194         int rc = 0;
5195         u32 errcnt;
5196
5197         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5198
5199         rc = iwl3945_grab_nic_access(priv);
5200         if (rc)
5201                 return rc;
5202
5203         iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5204
5205         errcnt = 0;
5206         for (; len > 0; len -= sizeof(u32), image++) {
5207                 /* read data comes through single port, auto-incr addr */
5208                 /* NOTE: Use the debugless read so we don't flood kernel log
5209                  * if IWL_DL_IO is set */
5210                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5211                 if (val != le32_to_cpu(*image)) {
5212                         IWL_ERROR("uCode INST section is invalid at "
5213                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5214                                   save_len - len, val, le32_to_cpu(*image));
5215                         rc = -EIO;
5216                         errcnt++;
5217                         if (errcnt >= 20)
5218                                 break;
5219                 }
5220         }
5221
5222         iwl3945_release_nic_access(priv);
5223
5224         if (!errcnt)
5225                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5226
5227         return rc;
5228 }
5229
5230
5231 /**
5232  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5233  *   using sample data 100 bytes apart.  If these sample points are good,
5234  *   it's a pretty good bet that everything between them is good, too.
5235  */
5236 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5237 {
5238         u32 val;
5239         int rc = 0;
5240         u32 errcnt = 0;
5241         u32 i;
5242
5243         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5244
5245         rc = iwl3945_grab_nic_access(priv);
5246         if (rc)
5247                 return rc;
5248
5249         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5250                 /* read data comes through single port, auto-incr addr */
5251                 /* NOTE: Use the debugless read so we don't flood kernel log
5252                  * if IWL_DL_IO is set */
5253                 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5254                         i + RTC_INST_LOWER_BOUND);
5255                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5256                 if (val != le32_to_cpu(*image)) {
5257 #if 0 /* Enable this if you want to see details */
5258                         IWL_ERROR("uCode INST section is invalid at "
5259                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5260                                   i, val, *image);
5261 #endif
5262                         rc = -EIO;
5263                         errcnt++;
5264                         if (errcnt >= 3)
5265                                 break;
5266                 }
5267         }
5268
5269         iwl3945_release_nic_access(priv);
5270
5271         return rc;
5272 }
5273
5274
5275 /**
5276  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5277  *    and verify its contents
5278  */
5279 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5280 {
5281         __le32 *image;
5282         u32 len;
5283         int rc = 0;
5284
5285         /* Try bootstrap */
5286         image = (__le32 *)priv->ucode_boot.v_addr;
5287         len = priv->ucode_boot.len;
5288         rc = iwl3945_verify_inst_sparse(priv, image, len);
5289         if (rc == 0) {
5290                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5291                 return 0;
5292         }
5293
5294         /* Try initialize */
5295         image = (__le32 *)priv->ucode_init.v_addr;
5296         len = priv->ucode_init.len;
5297         rc = iwl3945_verify_inst_sparse(priv, image, len);
5298         if (rc == 0) {
5299                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5300                 return 0;
5301         }
5302
5303         /* Try runtime/protocol */
5304         image = (__le32 *)priv->ucode_code.v_addr;
5305         len = priv->ucode_code.len;
5306         rc = iwl3945_verify_inst_sparse(priv, image, len);
5307         if (rc == 0) {
5308                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5309                 return 0;
5310         }
5311
5312         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5313
5314         /* Since nothing seems to match, show first several data entries in
5315          * instruction SRAM, so maybe visual inspection will give a clue.
5316          * Selection of bootstrap image (vs. other images) is arbitrary. */
5317         image = (__le32 *)priv->ucode_boot.v_addr;
5318         len = priv->ucode_boot.len;
5319         rc = iwl3945_verify_inst_full(priv, image, len);
5320
5321         return rc;
5322 }
5323
5324
5325 /* check contents of special bootstrap uCode SRAM */
5326 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5327 {
5328         __le32 *image = priv->ucode_boot.v_addr;
5329         u32 len = priv->ucode_boot.len;
5330         u32 reg;
5331         u32 val;
5332
5333         IWL_DEBUG_INFO("Begin verify bsm\n");
5334
5335         /* verify BSM SRAM contents */
5336         val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5337         for (reg = BSM_SRAM_LOWER_BOUND;
5338              reg < BSM_SRAM_LOWER_BOUND + len;
5339              reg += sizeof(u32), image ++) {
5340                 val = iwl3945_read_prph(priv, reg);
5341                 if (val != le32_to_cpu(*image)) {
5342                         IWL_ERROR("BSM uCode verification failed at "
5343                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5344                                   BSM_SRAM_LOWER_BOUND,
5345                                   reg - BSM_SRAM_LOWER_BOUND, len,
5346                                   val, le32_to_cpu(*image));
5347                         return -EIO;
5348                 }
5349         }
5350
5351         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5352
5353         return 0;
5354 }
5355
5356 /**
5357  * iwl3945_load_bsm - Load bootstrap instructions
5358  *
5359  * BSM operation:
5360  *
5361  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5362  * in special SRAM that does not power down during RFKILL.  When powering back
5363  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5364  * the bootstrap program into the on-board processor, and starts it.
5365  *
5366  * The bootstrap program loads (via DMA) instructions and data for a new
5367  * program from host DRAM locations indicated by the host driver in the
5368  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5369  * automatically.
5370  *
5371  * When initializing the NIC, the host driver points the BSM to the
5372  * "initialize" uCode image.  This uCode sets up some internal data, then
5373  * notifies host via "initialize alive" that it is complete.
5374  *
5375  * The host then replaces the BSM_DRAM_* pointer values to point to the
5376  * normal runtime uCode instructions and a backup uCode data cache buffer
5377  * (filled initially with starting data values for the on-board processor),
5378  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5379  * which begins normal operation.
5380  *
5381  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5382  * the backup data cache in DRAM before SRAM is powered down.
5383  *
5384  * When powering back up, the BSM loads the bootstrap program.  This reloads
5385  * the runtime uCode instructions and the backup data cache into SRAM,
5386  * and re-launches the runtime uCode from where it left off.
5387  */
5388 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5389 {
5390         __le32 *image = priv->ucode_boot.v_addr;
5391         u32 len = priv->ucode_boot.len;
5392         dma_addr_t pinst;
5393         dma_addr_t pdata;
5394         u32 inst_len;
5395         u32 data_len;
5396         int rc;
5397         int i;
5398         u32 done;
5399         u32 reg_offset;
5400
5401         IWL_DEBUG_INFO("Begin load bsm\n");
5402
5403         /* make sure bootstrap program is no larger than BSM's SRAM size */
5404         if (len > IWL_MAX_BSM_SIZE)
5405                 return -EINVAL;
5406
5407         /* Tell bootstrap uCode where to find the "Initialize" uCode
5408          *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5409          * NOTE:  iwl3945_initialize_alive_start() will replace these values,
5410          *        after the "initialize" uCode has run, to point to
5411          *        runtime/protocol instructions and backup data cache. */
5412         pinst = priv->ucode_init.p_addr;
5413         pdata = priv->ucode_init_data.p_addr;
5414         inst_len = priv->ucode_init.len;
5415         data_len = priv->ucode_init_data.len;
5416
5417         rc = iwl3945_grab_nic_access(priv);
5418         if (rc)
5419                 return rc;
5420
5421         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5422         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5423         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5424         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5425
5426         /* Fill BSM memory with bootstrap instructions */
5427         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5428              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5429              reg_offset += sizeof(u32), image++)
5430                 _iwl3945_write_prph(priv, reg_offset,
5431                                           le32_to_cpu(*image));
5432
5433         rc = iwl3945_verify_bsm(priv);
5434         if (rc) {
5435                 iwl3945_release_nic_access(priv);
5436                 return rc;
5437         }
5438
5439         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5440         iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5441         iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5442                                  RTC_INST_LOWER_BOUND);
5443         iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5444
5445         /* Load bootstrap code into instruction SRAM now,
5446          *   to prepare to load "initialize" uCode */
5447         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5448                 BSM_WR_CTRL_REG_BIT_START);
5449
5450         /* Wait for load of bootstrap uCode to finish */
5451         for (i = 0; i < 100; i++) {
5452                 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5453                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5454                         break;
5455                 udelay(10);
5456         }
5457         if (i < 100)
5458                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5459         else {
5460                 IWL_ERROR("BSM write did not complete!\n");
5461                 return -EIO;
5462         }
5463
5464         /* Enable future boot loads whenever power management unit triggers it
5465          *   (e.g. when powering back up after power-save shutdown) */
5466         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5467                 BSM_WR_CTRL_REG_BIT_START_EN);
5468
5469         iwl3945_release_nic_access(priv);
5470
5471         return 0;
5472 }
5473
5474 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5475 {
5476         /* Remove all resets to allow NIC to operate */
5477         iwl3945_write32(priv, CSR_RESET, 0);
5478 }
5479
5480 /**
5481  * iwl3945_read_ucode - Read uCode images from disk file.
5482  *
5483  * Copy into buffers for card to fetch via bus-mastering
5484  */
5485 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5486 {
5487         struct iwl3945_ucode *ucode;
5488         int ret = 0;
5489         const struct firmware *ucode_raw;
5490         /* firmware file name contains uCode/driver compatibility version */
5491         const char *name = priv->cfg->fw_name;
5492         u8 *src;
5493         size_t len;
5494         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5495
5496         /* Ask kernel firmware_class module to get the boot firmware off disk.
5497          * request_firmware() is synchronous, file is in memory on return. */
5498         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5499         if (ret < 0) {
5500                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5501                                 name, ret);
5502                 goto error;
5503         }
5504
5505         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5506                        name, ucode_raw->size);
5507
5508         /* Make sure that we got at least our header! */
5509         if (ucode_raw->size < sizeof(*ucode)) {
5510                 IWL_ERROR("File size way too small!\n");
5511                 ret = -EINVAL;
5512                 goto err_release;
5513         }
5514
5515         /* Data from ucode file:  header followed by uCode images */
5516         ucode = (void *)ucode_raw->data;
5517
5518         ver = le32_to_cpu(ucode->ver);
5519         inst_size = le32_to_cpu(ucode->inst_size);
5520         data_size = le32_to_cpu(ucode->data_size);
5521         init_size = le32_to_cpu(ucode->init_size);
5522         init_data_size = le32_to_cpu(ucode->init_data_size);
5523         boot_size = le32_to_cpu(ucode->boot_size);
5524
5525         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5526         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5527         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5528         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5529         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5530         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5531
5532         /* Verify size of file vs. image size info in file's header */
5533         if (ucode_raw->size < sizeof(*ucode) +
5534                 inst_size + data_size + init_size +
5535                 init_data_size + boot_size) {
5536
5537                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5538                                (int)ucode_raw->size);
5539                 ret = -EINVAL;
5540                 goto err_release;
5541         }
5542
5543         /* Verify that uCode images will fit in card's SRAM */
5544         if (inst_size > IWL_MAX_INST_SIZE) {
5545                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5546                                inst_size);
5547                 ret = -EINVAL;
5548                 goto err_release;
5549         }
5550
5551         if (data_size > IWL_MAX_DATA_SIZE) {
5552                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5553                                data_size);
5554                 ret = -EINVAL;
5555                 goto err_release;
5556         }
5557         if (init_size > IWL_MAX_INST_SIZE) {
5558                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5559                                 init_size);
5560                 ret = -EINVAL;
5561                 goto err_release;
5562         }
5563         if (init_data_size > IWL_MAX_DATA_SIZE) {
5564                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5565                                 init_data_size);
5566                 ret = -EINVAL;
5567                 goto err_release;
5568         }
5569         if (boot_size > IWL_MAX_BSM_SIZE) {
5570                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5571                                 boot_size);
5572                 ret = -EINVAL;
5573                 goto err_release;
5574         }
5575
5576         /* Allocate ucode buffers for card's bus-master loading ... */
5577
5578         /* Runtime instructions and 2 copies of data:
5579          * 1) unmodified from disk
5580          * 2) backup cache for save/restore during power-downs */
5581         priv->ucode_code.len = inst_size;
5582         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5583
5584         priv->ucode_data.len = data_size;
5585         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5586
5587         priv->ucode_data_backup.len = data_size;
5588         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5589
5590         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5591             !priv->ucode_data_backup.v_addr)
5592                 goto err_pci_alloc;
5593
5594         /* Initialization instructions and data */
5595         if (init_size && init_data_size) {
5596                 priv->ucode_init.len = init_size;
5597                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5598
5599                 priv->ucode_init_data.len = init_data_size;
5600                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5601
5602                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5603                         goto err_pci_alloc;
5604         }
5605
5606         /* Bootstrap (instructions only, no data) */
5607         if (boot_size) {
5608                 priv->ucode_boot.len = boot_size;
5609                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5610
5611                 if (!priv->ucode_boot.v_addr)
5612                         goto err_pci_alloc;
5613         }
5614
5615         /* Copy images into buffers for card's bus-master reads ... */
5616
5617         /* Runtime instructions (first block of data in file) */
5618         src = &ucode->data[0];
5619         len = priv->ucode_code.len;
5620         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5621         memcpy(priv->ucode_code.v_addr, src, len);
5622         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5623                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5624
5625         /* Runtime data (2nd block)
5626          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
5627         src = &ucode->data[inst_size];
5628         len = priv->ucode_data.len;
5629         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5630         memcpy(priv->ucode_data.v_addr, src, len);
5631         memcpy(priv->ucode_data_backup.v_addr, src, len);
5632
5633         /* Initialization instructions (3rd block) */
5634         if (init_size) {
5635                 src = &ucode->data[inst_size + data_size];
5636                 len = priv->ucode_init.len;
5637                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5638                                len);
5639                 memcpy(priv->ucode_init.v_addr, src, len);
5640         }
5641
5642         /* Initialization data (4th block) */
5643         if (init_data_size) {
5644                 src = &ucode->data[inst_size + data_size + init_size];
5645                 len = priv->ucode_init_data.len;
5646                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5647                                (int)len);
5648                 memcpy(priv->ucode_init_data.v_addr, src, len);
5649         }
5650
5651         /* Bootstrap instructions (5th block) */
5652         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5653         len = priv->ucode_boot.len;
5654         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5655                        (int)len);
5656         memcpy(priv->ucode_boot.v_addr, src, len);
5657
5658         /* We have our copies now, allow OS release its copies */
5659         release_firmware(ucode_raw);
5660         return 0;
5661
5662  err_pci_alloc:
5663         IWL_ERROR("failed to allocate pci memory\n");
5664         ret = -ENOMEM;
5665         iwl3945_dealloc_ucode_pci(priv);
5666
5667  err_release:
5668         release_firmware(ucode_raw);
5669
5670  error:
5671         return ret;
5672 }
5673
5674
5675 /**
5676  * iwl3945_set_ucode_ptrs - Set uCode address location
5677  *
5678  * Tell initialization uCode where to find runtime uCode.
5679  *
5680  * BSM registers initially contain pointers to initialization uCode.
5681  * We need to replace them to load runtime uCode inst and data,
5682  * and to save runtime data when powering down.
5683  */
5684 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
5685 {
5686         dma_addr_t pinst;
5687         dma_addr_t pdata;
5688         int rc = 0;
5689         unsigned long flags;
5690
5691         /* bits 31:0 for 3945 */
5692         pinst = priv->ucode_code.p_addr;
5693         pdata = priv->ucode_data_backup.p_addr;
5694
5695         spin_lock_irqsave(&priv->lock, flags);
5696         rc = iwl3945_grab_nic_access(priv);
5697         if (rc) {
5698                 spin_unlock_irqrestore(&priv->lock, flags);
5699                 return rc;
5700         }
5701
5702         /* Tell bootstrap uCode where to find image to load */
5703         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5704         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5705         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5706                                  priv->ucode_data.len);
5707
5708         /* Inst bytecount must be last to set up, bit 31 signals uCode
5709          *   that all new ptr/size info is in place */
5710         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5711                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5712
5713         iwl3945_release_nic_access(priv);
5714
5715         spin_unlock_irqrestore(&priv->lock, flags);
5716
5717         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5718
5719         return rc;
5720 }
5721
5722 /**
5723  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5724  *
5725  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5726  *
5727  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5728  */
5729 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
5730 {
5731         /* Check alive response for "valid" sign from uCode */
5732         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5733                 /* We had an error bringing up the hardware, so take it
5734                  * all the way back down so we can try again */
5735                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5736                 goto restart;
5737         }
5738
5739         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5740          * This is a paranoid check, because we would not have gotten the
5741          * "initialize" alive if code weren't properly loaded.  */
5742         if (iwl3945_verify_ucode(priv)) {
5743                 /* Runtime instruction load was bad;
5744                  * take it all the way back down so we can try again */
5745                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5746                 goto restart;
5747         }
5748
5749         /* Send pointers to protocol/runtime uCode image ... init code will
5750          * load and launch runtime uCode, which will send us another "Alive"
5751          * notification. */
5752         IWL_DEBUG_INFO("Initialization Alive received.\n");
5753         if (iwl3945_set_ucode_ptrs(priv)) {
5754                 /* Runtime instruction load won't happen;
5755                  * take it all the way back down so we can try again */
5756                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5757                 goto restart;
5758         }
5759         return;
5760
5761  restart:
5762         queue_work(priv->workqueue, &priv->restart);
5763 }
5764
5765
5766 /**
5767  * iwl3945_alive_start - called after REPLY_ALIVE notification received
5768  *                   from protocol/runtime uCode (initialization uCode's
5769  *                   Alive gets handled by iwl3945_init_alive_start()).
5770  */
5771 static void iwl3945_alive_start(struct iwl3945_priv *priv)
5772 {
5773         int rc = 0;
5774         int thermal_spin = 0;
5775         u32 rfkill;
5776
5777         IWL_DEBUG_INFO("Runtime Alive received.\n");
5778
5779         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5780                 /* We had an error bringing up the hardware, so take it
5781                  * all the way back down so we can try again */
5782                 IWL_DEBUG_INFO("Alive failed.\n");
5783                 goto restart;
5784         }
5785
5786         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5787          * This is a paranoid check, because we would not have gotten the
5788          * "runtime" alive if code weren't properly loaded.  */
5789         if (iwl3945_verify_ucode(priv)) {
5790                 /* Runtime instruction load was bad;
5791                  * take it all the way back down so we can try again */
5792                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5793                 goto restart;
5794         }
5795
5796         iwl3945_clear_stations_table(priv);
5797
5798         rc = iwl3945_grab_nic_access(priv);
5799         if (rc) {
5800                 IWL_WARNING("Can not read rfkill status from adapter\n");
5801                 return;
5802         }
5803
5804         rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
5805         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5806         iwl3945_release_nic_access(priv);
5807
5808         if (rfkill & 0x1) {
5809                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5810                 /* if rfkill is not on, then wait for thermal
5811                  * sensor in adapter to kick in */
5812                 while (iwl3945_hw_get_temperature(priv) == 0) {
5813                         thermal_spin++;
5814                         udelay(10);
5815                 }
5816
5817                 if (thermal_spin)
5818                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5819                                        thermal_spin * 10);
5820         } else
5821                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5822
5823         /* After the ALIVE response, we can send commands to 3945 uCode */
5824         set_bit(STATUS_ALIVE, &priv->status);
5825
5826         /* Clear out the uCode error bit if it is set */
5827         clear_bit(STATUS_FW_ERROR, &priv->status);
5828
5829         if (iwl3945_is_rfkill(priv))
5830                 return;
5831
5832         ieee80211_wake_queues(priv->hw);
5833
5834         priv->active_rate = priv->rates_mask;
5835         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5836
5837         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5838
5839         if (iwl3945_is_associated(priv)) {
5840                 struct iwl3945_rxon_cmd *active_rxon =
5841                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
5842
5843                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5844                        sizeof(priv->staging_rxon));
5845                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5846         } else {
5847                 /* Initialize our rx_config data */
5848                 iwl3945_connection_init_rx_config(priv);
5849                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5850         }
5851
5852         /* Configure Bluetooth device coexistence support */
5853         iwl3945_send_bt_config(priv);
5854
5855         /* Configure the adapter for unassociated operation */
5856         iwl3945_commit_rxon(priv);
5857
5858         iwl3945_reg_txpower_periodic(priv);
5859
5860         iwl3945_led_register(priv);
5861
5862         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5863         set_bit(STATUS_READY, &priv->status);
5864         wake_up_interruptible(&priv->wait_command_queue);
5865
5866         if (priv->error_recovering)
5867                 iwl3945_error_recovery(priv);
5868
5869         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
5870         return;
5871
5872  restart:
5873         queue_work(priv->workqueue, &priv->restart);
5874 }
5875
5876 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
5877
5878 static void __iwl3945_down(struct iwl3945_priv *priv)
5879 {
5880         unsigned long flags;
5881         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5882         struct ieee80211_conf *conf = NULL;
5883
5884         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5885
5886         conf = ieee80211_get_hw_conf(priv->hw);
5887
5888         if (!exit_pending)
5889                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5890
5891         iwl3945_led_unregister(priv);
5892         iwl3945_clear_stations_table(priv);
5893
5894         /* Unblock any waiting calls */
5895         wake_up_interruptible_all(&priv->wait_command_queue);
5896
5897         /* Wipe out the EXIT_PENDING status bit if we are not actually
5898          * exiting the module */
5899         if (!exit_pending)
5900                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5901
5902         /* stop and reset the on-board processor */
5903         iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5904
5905         /* tell the device to stop sending interrupts */
5906         spin_lock_irqsave(&priv->lock, flags);
5907         iwl3945_disable_interrupts(priv);
5908         spin_unlock_irqrestore(&priv->lock, flags);
5909         iwl_synchronize_irq(priv);
5910
5911         if (priv->mac80211_registered)
5912                 ieee80211_stop_queues(priv->hw);
5913
5914         /* If we have not previously called iwl3945_init() then
5915          * clear all bits but the RF Kill and SUSPEND bits and return */
5916         if (!iwl3945_is_init(priv)) {
5917                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5918                                         STATUS_RF_KILL_HW |
5919                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5920                                         STATUS_RF_KILL_SW |
5921                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5922                                         STATUS_GEO_CONFIGURED |
5923                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5924                                         STATUS_IN_SUSPEND;
5925                 goto exit;
5926         }
5927
5928         /* ...otherwise clear out all the status bits but the RF Kill and
5929          * SUSPEND bits and continue taking the NIC down. */
5930         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5931                                 STATUS_RF_KILL_HW |
5932                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5933                                 STATUS_RF_KILL_SW |
5934                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5935                                 STATUS_GEO_CONFIGURED |
5936                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5937                                 STATUS_IN_SUSPEND |
5938                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5939                                 STATUS_FW_ERROR;
5940
5941         spin_lock_irqsave(&priv->lock, flags);
5942         iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5943         spin_unlock_irqrestore(&priv->lock, flags);
5944
5945         iwl3945_hw_txq_ctx_stop(priv);
5946         iwl3945_hw_rxq_stop(priv);
5947
5948         spin_lock_irqsave(&priv->lock, flags);
5949         if (!iwl3945_grab_nic_access(priv)) {
5950                 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
5951                                          APMG_CLK_VAL_DMA_CLK_RQT);
5952                 iwl3945_release_nic_access(priv);
5953         }
5954         spin_unlock_irqrestore(&priv->lock, flags);
5955
5956         udelay(5);
5957
5958         iwl3945_hw_nic_stop_master(priv);
5959         iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5960         iwl3945_hw_nic_reset(priv);
5961
5962  exit:
5963         memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
5964
5965         if (priv->ibss_beacon)
5966                 dev_kfree_skb(priv->ibss_beacon);
5967         priv->ibss_beacon = NULL;
5968
5969         /* clear out any free frames */
5970         iwl3945_clear_free_frames(priv);
5971 }
5972
5973 static void iwl3945_down(struct iwl3945_priv *priv)
5974 {
5975         mutex_lock(&priv->mutex);
5976         __iwl3945_down(priv);
5977         mutex_unlock(&priv->mutex);
5978
5979         iwl3945_cancel_deferred_work(priv);
5980 }
5981
5982 #define MAX_HW_RESTARTS 5
5983
5984 static int __iwl3945_up(struct iwl3945_priv *priv)
5985 {
5986         int rc, i;
5987
5988         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5989                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5990                 return -EIO;
5991         }
5992
5993         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5994                 IWL_WARNING("Radio disabled by SW RF kill (module "
5995                             "parameter)\n");
5996                 return -ENODEV;
5997         }
5998
5999         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6000                 IWL_ERROR("ucode not available for device bringup\n");
6001                 return -EIO;
6002         }
6003
6004         /* If platform's RF_KILL switch is NOT set to KILL */
6005         if (iwl3945_read32(priv, CSR_GP_CNTRL) &
6006                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6007                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6008         else {
6009                 set_bit(STATUS_RF_KILL_HW, &priv->status);
6010                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6011                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6012                         return -ENODEV;
6013                 }
6014         }
6015
6016         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6017
6018         rc = iwl3945_hw_nic_init(priv);
6019         if (rc) {
6020                 IWL_ERROR("Unable to int nic\n");
6021                 return rc;
6022         }
6023
6024         /* make sure rfkill handshake bits are cleared */
6025         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6026         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6027                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6028
6029         /* clear (again), then enable host interrupts */
6030         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6031         iwl3945_enable_interrupts(priv);
6032
6033         /* really make sure rfkill handshake bits are cleared */
6034         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6035         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6036
6037         /* Copy original ucode data image from disk into backup cache.
6038          * This will be used to initialize the on-board processor's
6039          * data SRAM for a clean start when the runtime program first loads. */
6040         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6041                priv->ucode_data.len);
6042
6043         /* We return success when we resume from suspend and rf_kill is on. */
6044         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6045                 return 0;
6046
6047         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6048
6049                 iwl3945_clear_stations_table(priv);
6050
6051                 /* load bootstrap state machine,
6052                  * load bootstrap program into processor's memory,
6053                  * prepare to load the "initialize" uCode */
6054                 rc = iwl3945_load_bsm(priv);
6055
6056                 if (rc) {
6057                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6058                         continue;
6059                 }
6060
6061                 /* start card; "initialize" will load runtime ucode */
6062                 iwl3945_nic_start(priv);
6063
6064                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6065
6066                 return 0;
6067         }
6068
6069         set_bit(STATUS_EXIT_PENDING, &priv->status);
6070         __iwl3945_down(priv);
6071
6072         /* tried to restart and config the device for as long as our
6073          * patience could withstand */
6074         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6075         return -EIO;
6076 }
6077
6078
6079 /*****************************************************************************
6080  *
6081  * Workqueue callbacks
6082  *
6083  *****************************************************************************/
6084
6085 static void iwl3945_bg_init_alive_start(struct work_struct *data)
6086 {
6087         struct iwl3945_priv *priv =
6088             container_of(data, struct iwl3945_priv, init_alive_start.work);
6089
6090         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6091                 return;
6092
6093         mutex_lock(&priv->mutex);
6094         iwl3945_init_alive_start(priv);
6095         mutex_unlock(&priv->mutex);
6096 }
6097
6098 static void iwl3945_bg_alive_start(struct work_struct *data)
6099 {
6100         struct iwl3945_priv *priv =
6101             container_of(data, struct iwl3945_priv, alive_start.work);
6102
6103         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6104                 return;
6105
6106         mutex_lock(&priv->mutex);
6107         iwl3945_alive_start(priv);
6108         mutex_unlock(&priv->mutex);
6109 }
6110
6111 static void iwl3945_bg_rf_kill(struct work_struct *work)
6112 {
6113         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
6114
6115         wake_up_interruptible(&priv->wait_command_queue);
6116
6117         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6118                 return;
6119
6120         mutex_lock(&priv->mutex);
6121
6122         if (!iwl3945_is_rfkill(priv)) {
6123                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6124                           "HW and/or SW RF Kill no longer active, restarting "
6125                           "device\n");
6126                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6127                         queue_work(priv->workqueue, &priv->restart);
6128         } else {
6129
6130                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6131                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6132                                           "disabled by SW switch\n");
6133                 else
6134                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6135                                     "Kill switch must be turned off for "
6136                                     "wireless networking to work.\n");
6137         }
6138         mutex_unlock(&priv->mutex);
6139 }
6140
6141 static void iwl3945_bg_set_monitor(struct work_struct *work)
6142 {
6143         struct iwl3945_priv *priv = container_of(work,
6144                                 struct iwl3945_priv, set_monitor);
6145
6146         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
6147
6148         mutex_lock(&priv->mutex);
6149
6150         if (!iwl3945_is_ready(priv))
6151                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
6152         else
6153                 if (iwl3945_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
6154                         IWL_ERROR("iwl3945_set_mode() failed\n");
6155
6156         mutex_unlock(&priv->mutex);
6157 }
6158
6159 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6160
6161 static void iwl3945_bg_scan_check(struct work_struct *data)
6162 {
6163         struct iwl3945_priv *priv =
6164             container_of(data, struct iwl3945_priv, scan_check.work);
6165
6166         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6167                 return;
6168
6169         mutex_lock(&priv->mutex);
6170         if (test_bit(STATUS_SCANNING, &priv->status) ||
6171             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6172                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6173                           "Scan completion watchdog resetting adapter (%dms)\n",
6174                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6175
6176                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6177                         iwl3945_send_scan_abort(priv);
6178         }
6179         mutex_unlock(&priv->mutex);
6180 }
6181
6182 static void iwl3945_bg_request_scan(struct work_struct *data)
6183 {
6184         struct iwl3945_priv *priv =
6185             container_of(data, struct iwl3945_priv, request_scan);
6186         struct iwl3945_host_cmd cmd = {
6187                 .id = REPLY_SCAN_CMD,
6188                 .len = sizeof(struct iwl3945_scan_cmd),
6189                 .meta.flags = CMD_SIZE_HUGE,
6190         };
6191         int rc = 0;
6192         struct iwl3945_scan_cmd *scan;
6193         struct ieee80211_conf *conf = NULL;
6194         u8 direct_mask;
6195         enum ieee80211_band band;
6196
6197         conf = ieee80211_get_hw_conf(priv->hw);
6198
6199         mutex_lock(&priv->mutex);
6200
6201         if (!iwl3945_is_ready(priv)) {
6202                 IWL_WARNING("request scan called when driver not ready.\n");
6203                 goto done;
6204         }
6205
6206         /* Make sure the scan wasn't cancelled before this queued work
6207          * was given the chance to run... */
6208         if (!test_bit(STATUS_SCANNING, &priv->status))
6209                 goto done;
6210
6211         /* This should never be called or scheduled if there is currently
6212          * a scan active in the hardware. */
6213         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6214                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6215                                "Ignoring second request.\n");
6216                 rc = -EIO;
6217                 goto done;
6218         }
6219
6220         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6221                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6222                 goto done;
6223         }
6224
6225         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6226                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6227                 goto done;
6228         }
6229
6230         if (iwl3945_is_rfkill(priv)) {
6231                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6232                 goto done;
6233         }
6234
6235         if (!test_bit(STATUS_READY, &priv->status)) {
6236                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6237                 goto done;
6238         }
6239
6240         if (!priv->scan_bands) {
6241                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6242                 goto done;
6243         }
6244
6245         if (!priv->scan) {
6246                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6247                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6248                 if (!priv->scan) {
6249                         rc = -ENOMEM;
6250                         goto done;
6251                 }
6252         }
6253         scan = priv->scan;
6254         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6255
6256         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6257         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6258
6259         if (iwl3945_is_associated(priv)) {
6260                 u16 interval = 0;
6261                 u32 extra;
6262                 u32 suspend_time = 100;
6263                 u32 scan_suspend_time = 100;
6264                 unsigned long flags;
6265
6266                 IWL_DEBUG_INFO("Scanning while associated...\n");
6267
6268                 spin_lock_irqsave(&priv->lock, flags);
6269                 interval = priv->beacon_int;
6270                 spin_unlock_irqrestore(&priv->lock, flags);
6271
6272                 scan->suspend_time = 0;
6273                 scan->max_out_time = cpu_to_le32(200 * 1024);
6274                 if (!interval)
6275                         interval = suspend_time;
6276                 /*
6277                  * suspend time format:
6278                  *  0-19: beacon interval in usec (time before exec.)
6279                  * 20-23: 0
6280                  * 24-31: number of beacons (suspend between channels)
6281                  */
6282
6283                 extra = (suspend_time / interval) << 24;
6284                 scan_suspend_time = 0xFF0FFFFF &
6285                     (extra | ((suspend_time % interval) * 1024));
6286
6287                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6288                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6289                                scan_suspend_time, interval);
6290         }
6291
6292         /* We should add the ability for user to lock to PASSIVE ONLY */
6293         if (priv->one_direct_scan) {
6294                 IWL_DEBUG_SCAN
6295                     ("Kicking off one direct scan for '%s'\n",
6296                      iwl3945_escape_essid(priv->direct_ssid,
6297                                       priv->direct_ssid_len));
6298                 scan->direct_scan[0].id = WLAN_EID_SSID;
6299                 scan->direct_scan[0].len = priv->direct_ssid_len;
6300                 memcpy(scan->direct_scan[0].ssid,
6301                        priv->direct_ssid, priv->direct_ssid_len);
6302                 direct_mask = 1;
6303         } else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6304                 IWL_DEBUG_SCAN
6305                   ("Kicking off one direct scan for '%s' when not associated\n",
6306                    iwl3945_escape_essid(priv->essid, priv->essid_len));
6307                 scan->direct_scan[0].id = WLAN_EID_SSID;
6308                 scan->direct_scan[0].len = priv->essid_len;
6309                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6310                 direct_mask = 1;
6311         } else {
6312                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
6313                 direct_mask = 0;
6314         }
6315
6316         /* We don't build a direct scan probe request; the uCode will do
6317          * that based on the direct_mask added to each channel entry */
6318         scan->tx_cmd.len = cpu_to_le16(
6319                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6320                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
6321         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6322         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6323         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6324
6325         /* flags + rate selection */
6326
6327         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
6328                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6329                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6330                 scan->good_CRC_th = 0;
6331                 band = IEEE80211_BAND_2GHZ;
6332         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
6333                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6334                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6335                 band = IEEE80211_BAND_5GHZ;
6336         } else {
6337                 IWL_WARNING("Invalid scan band count\n");
6338                 goto done;
6339         }
6340
6341         /* select Rx antennas */
6342         scan->flags |= iwl3945_get_antenna_flags(priv);
6343
6344         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6345                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6346
6347         if (direct_mask)
6348                 scan->channel_count =
6349                         iwl3945_get_channels_for_scan(
6350                                 priv, band, 1, /* active */
6351                                 direct_mask,
6352                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6353         else
6354                 scan->channel_count =
6355                         iwl3945_get_channels_for_scan(
6356                                 priv, band, 0, /* passive */
6357                                 direct_mask,
6358                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6359
6360         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6361             scan->channel_count * sizeof(struct iwl3945_scan_channel);
6362         cmd.data = scan;
6363         scan->len = cpu_to_le16(cmd.len);
6364
6365         set_bit(STATUS_SCAN_HW, &priv->status);
6366         rc = iwl3945_send_cmd_sync(priv, &cmd);
6367         if (rc)
6368                 goto done;
6369
6370         queue_delayed_work(priv->workqueue, &priv->scan_check,
6371                            IWL_SCAN_CHECK_WATCHDOG);
6372
6373         mutex_unlock(&priv->mutex);
6374         return;
6375
6376  done:
6377         /* inform mac80211 scan aborted */
6378         queue_work(priv->workqueue, &priv->scan_completed);
6379         mutex_unlock(&priv->mutex);
6380 }
6381
6382 static void iwl3945_bg_up(struct work_struct *data)
6383 {
6384         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6385
6386         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6387                 return;
6388
6389         mutex_lock(&priv->mutex);
6390         __iwl3945_up(priv);
6391         mutex_unlock(&priv->mutex);
6392 }
6393
6394 static void iwl3945_bg_restart(struct work_struct *data)
6395 {
6396         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6397
6398         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6399                 return;
6400
6401         iwl3945_down(priv);
6402         queue_work(priv->workqueue, &priv->up);
6403 }
6404
6405 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6406 {
6407         struct iwl3945_priv *priv =
6408             container_of(data, struct iwl3945_priv, rx_replenish);
6409
6410         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6411                 return;
6412
6413         mutex_lock(&priv->mutex);
6414         iwl3945_rx_replenish(priv);
6415         mutex_unlock(&priv->mutex);
6416 }
6417
6418 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6419
6420 static void iwl3945_bg_post_associate(struct work_struct *data)
6421 {
6422         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
6423                                              post_associate.work);
6424
6425         int rc = 0;
6426         struct ieee80211_conf *conf = NULL;
6427         DECLARE_MAC_BUF(mac);
6428
6429         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6430                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6431                 return;
6432         }
6433
6434
6435         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6436                         priv->assoc_id,
6437                         print_mac(mac, priv->active_rxon.bssid_addr));
6438
6439         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6440                 return;
6441
6442         mutex_lock(&priv->mutex);
6443
6444         if (!priv->vif || !priv->is_open) {
6445                 mutex_unlock(&priv->mutex);
6446                 return;
6447         }
6448         iwl3945_scan_cancel_timeout(priv, 200);
6449
6450         conf = ieee80211_get_hw_conf(priv->hw);
6451
6452         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6453         iwl3945_commit_rxon(priv);
6454
6455         memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6456         iwl3945_setup_rxon_timing(priv);
6457         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6458                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6459         if (rc)
6460                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6461                             "Attempting to continue.\n");
6462
6463         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6464
6465         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6466
6467         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6468                         priv->assoc_id, priv->beacon_int);
6469
6470         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6471                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6472         else
6473                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6474
6475         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6476                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6477                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6478                 else
6479                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6480
6481                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6482                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6483
6484         }
6485
6486         iwl3945_commit_rxon(priv);
6487
6488         switch (priv->iw_mode) {
6489         case IEEE80211_IF_TYPE_STA:
6490                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6491                 break;
6492
6493         case IEEE80211_IF_TYPE_IBSS:
6494
6495                 /* clear out the station table */
6496                 iwl3945_clear_stations_table(priv);
6497
6498                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6499                 iwl3945_add_station(priv, priv->bssid, 0, 0);
6500                 iwl3945_sync_sta(priv, IWL_STA_ID,
6501                                  (priv->band == IEEE80211_BAND_5GHZ) ?
6502                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6503                                  CMD_ASYNC);
6504                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6505                 iwl3945_send_beacon_cmd(priv);
6506
6507                 break;
6508
6509         default:
6510                  IWL_ERROR("%s Should not be called in %d mode\n",
6511                            __FUNCTION__, priv->iw_mode);
6512                 break;
6513         }
6514
6515         iwl3945_sequence_reset(priv);
6516
6517         iwl3945_activate_qos(priv, 0);
6518
6519         /* we have just associated, don't start scan too early */
6520         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6521         mutex_unlock(&priv->mutex);
6522 }
6523
6524 static void iwl3945_bg_abort_scan(struct work_struct *work)
6525 {
6526         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6527
6528         if (!iwl3945_is_ready(priv))
6529                 return;
6530
6531         mutex_lock(&priv->mutex);
6532
6533         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6534         iwl3945_send_scan_abort(priv);
6535
6536         mutex_unlock(&priv->mutex);
6537 }
6538
6539 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6540
6541 static void iwl3945_bg_scan_completed(struct work_struct *work)
6542 {
6543         struct iwl3945_priv *priv =
6544             container_of(work, struct iwl3945_priv, scan_completed);
6545
6546         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6547
6548         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6549                 return;
6550
6551         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6552                 iwl3945_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6553
6554         ieee80211_scan_completed(priv->hw);
6555
6556         /* Since setting the TXPOWER may have been deferred while
6557          * performing the scan, fire one off */
6558         mutex_lock(&priv->mutex);
6559         iwl3945_hw_reg_send_txpower(priv);
6560         mutex_unlock(&priv->mutex);
6561 }
6562
6563 /*****************************************************************************
6564  *
6565  * mac80211 entry point functions
6566  *
6567  *****************************************************************************/
6568
6569 #define UCODE_READY_TIMEOUT     (2 * HZ)
6570
6571 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6572 {
6573         struct iwl3945_priv *priv = hw->priv;
6574         int ret;
6575
6576         IWL_DEBUG_MAC80211("enter\n");
6577
6578         if (pci_enable_device(priv->pci_dev)) {
6579                 IWL_ERROR("Fail to pci_enable_device\n");
6580                 return -ENODEV;
6581         }
6582         pci_restore_state(priv->pci_dev);
6583         pci_enable_msi(priv->pci_dev);
6584
6585         ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6586                           DRV_NAME, priv);
6587         if (ret) {
6588                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6589                 goto out_disable_msi;
6590         }
6591
6592         /* we should be verifying the device is ready to be opened */
6593         mutex_lock(&priv->mutex);
6594
6595         memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6596         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6597          * ucode filename and max sizes are card-specific. */
6598
6599         if (!priv->ucode_code.len) {
6600                 ret = iwl3945_read_ucode(priv);
6601                 if (ret) {
6602                         IWL_ERROR("Could not read microcode: %d\n", ret);
6603                         mutex_unlock(&priv->mutex);
6604                         goto out_release_irq;
6605                 }
6606         }
6607
6608         ret = __iwl3945_up(priv);
6609
6610         mutex_unlock(&priv->mutex);
6611
6612         if (ret)
6613                 goto out_release_irq;
6614
6615         IWL_DEBUG_INFO("Start UP work.\n");
6616
6617         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6618                 return 0;
6619
6620         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6621          * mac80211 will not be run successfully. */
6622         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6623                         test_bit(STATUS_READY, &priv->status),
6624                         UCODE_READY_TIMEOUT);
6625         if (!ret) {
6626                 if (!test_bit(STATUS_READY, &priv->status)) {
6627                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6628                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6629                         ret = -ETIMEDOUT;
6630                         goto out_release_irq;
6631                 }
6632         }
6633
6634         priv->is_open = 1;
6635         IWL_DEBUG_MAC80211("leave\n");
6636         return 0;
6637
6638 out_release_irq:
6639         free_irq(priv->pci_dev->irq, priv);
6640 out_disable_msi:
6641         pci_disable_msi(priv->pci_dev);
6642         pci_disable_device(priv->pci_dev);
6643         priv->is_open = 0;
6644         IWL_DEBUG_MAC80211("leave - failed\n");
6645         return ret;
6646 }
6647
6648 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6649 {
6650         struct iwl3945_priv *priv = hw->priv;
6651
6652         IWL_DEBUG_MAC80211("enter\n");
6653
6654         if (!priv->is_open) {
6655                 IWL_DEBUG_MAC80211("leave - skip\n");
6656                 return;
6657         }
6658
6659         priv->is_open = 0;
6660
6661         if (iwl3945_is_ready_rf(priv)) {
6662                 /* stop mac, cancel any scan request and clear
6663                  * RXON_FILTER_ASSOC_MSK BIT
6664                  */
6665                 mutex_lock(&priv->mutex);
6666                 iwl3945_scan_cancel_timeout(priv, 100);
6667                 cancel_delayed_work(&priv->post_associate);
6668                 mutex_unlock(&priv->mutex);
6669         }
6670
6671         iwl3945_down(priv);
6672
6673         flush_workqueue(priv->workqueue);
6674         free_irq(priv->pci_dev->irq, priv);
6675         pci_disable_msi(priv->pci_dev);
6676         pci_save_state(priv->pci_dev);
6677         pci_disable_device(priv->pci_dev);
6678
6679         IWL_DEBUG_MAC80211("leave\n");
6680 }
6681
6682 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
6683 {
6684         struct iwl3945_priv *priv = hw->priv;
6685
6686         IWL_DEBUG_MAC80211("enter\n");
6687
6688         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6689                 IWL_DEBUG_MAC80211("leave - monitor\n");
6690                 return -1;
6691         }
6692
6693         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6694                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
6695
6696         if (iwl3945_tx_skb(priv, skb))
6697                 dev_kfree_skb_any(skb);
6698
6699         IWL_DEBUG_MAC80211("leave\n");
6700         return 0;
6701 }
6702
6703 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6704                                  struct ieee80211_if_init_conf *conf)
6705 {
6706         struct iwl3945_priv *priv = hw->priv;
6707         unsigned long flags;
6708         DECLARE_MAC_BUF(mac);
6709
6710         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6711
6712         if (priv->vif) {
6713                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6714                 return -EOPNOTSUPP;
6715         }
6716
6717         spin_lock_irqsave(&priv->lock, flags);
6718         priv->vif = conf->vif;
6719
6720         spin_unlock_irqrestore(&priv->lock, flags);
6721
6722         mutex_lock(&priv->mutex);
6723
6724         if (conf->mac_addr) {
6725                 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
6726                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6727         }
6728
6729         if (iwl3945_is_ready(priv))
6730                 iwl3945_set_mode(priv, conf->type);
6731
6732         mutex_unlock(&priv->mutex);
6733
6734         IWL_DEBUG_MAC80211("leave\n");
6735         return 0;
6736 }
6737
6738 /**
6739  * iwl3945_mac_config - mac80211 config callback
6740  *
6741  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6742  * be set inappropriately and the driver currently sets the hardware up to
6743  * use it whenever needed.
6744  */
6745 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6746 {
6747         struct iwl3945_priv *priv = hw->priv;
6748         const struct iwl3945_channel_info *ch_info;
6749         unsigned long flags;
6750         int ret = 0;
6751
6752         mutex_lock(&priv->mutex);
6753         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6754
6755         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6756
6757         if (!iwl3945_is_ready(priv)) {
6758                 IWL_DEBUG_MAC80211("leave - not ready\n");
6759                 ret = -EIO;
6760                 goto out;
6761         }
6762
6763         if (unlikely(!iwl3945_param_disable_hw_scan &&
6764                      test_bit(STATUS_SCANNING, &priv->status))) {
6765                 IWL_DEBUG_MAC80211("leave - scanning\n");
6766                 set_bit(STATUS_CONF_PENDING, &priv->status);
6767                 mutex_unlock(&priv->mutex);
6768                 return 0;
6769         }
6770
6771         spin_lock_irqsave(&priv->lock, flags);
6772
6773         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6774                                            conf->channel->hw_value);
6775         if (!is_channel_valid(ch_info)) {
6776                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6777                                conf->channel->hw_value, conf->channel->band);
6778                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6779                 spin_unlock_irqrestore(&priv->lock, flags);
6780                 ret = -EINVAL;
6781                 goto out;
6782         }
6783
6784         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6785
6786         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6787
6788         /* The list of supported rates and rate mask can be different
6789          * for each phymode; since the phymode may have changed, reset
6790          * the rate mask to what mac80211 lists */
6791         iwl3945_set_rate(priv);
6792
6793         spin_unlock_irqrestore(&priv->lock, flags);
6794
6795 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6796         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6797                 iwl3945_hw_channel_switch(priv, conf->channel);
6798                 goto out;
6799         }
6800 #endif
6801
6802         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6803
6804         if (!conf->radio_enabled) {
6805                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6806                 goto out;
6807         }
6808
6809         if (iwl3945_is_rfkill(priv)) {
6810                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6811                 ret = -EIO;
6812                 goto out;
6813         }
6814
6815         iwl3945_set_rate(priv);
6816
6817         if (memcmp(&priv->active_rxon,
6818                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6819                 iwl3945_commit_rxon(priv);
6820         else
6821                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6822
6823         IWL_DEBUG_MAC80211("leave\n");
6824
6825 out:
6826         clear_bit(STATUS_CONF_PENDING, &priv->status);
6827         mutex_unlock(&priv->mutex);
6828         return ret;
6829 }
6830
6831 static void iwl3945_config_ap(struct iwl3945_priv *priv)
6832 {
6833         int rc = 0;
6834
6835         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6836                 return;
6837
6838         /* The following should be done only at AP bring up */
6839         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6840
6841                 /* RXON - unassoc (to set timing command) */
6842                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6843                 iwl3945_commit_rxon(priv);
6844
6845                 /* RXON Timing */
6846                 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6847                 iwl3945_setup_rxon_timing(priv);
6848                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6849                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6850                 if (rc)
6851                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6852                                         "Attempting to continue.\n");
6853
6854                 /* FIXME: what should be the assoc_id for AP? */
6855                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6856                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6857                         priv->staging_rxon.flags |=
6858                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6859                 else
6860                         priv->staging_rxon.flags &=
6861                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6862
6863                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6864                         if (priv->assoc_capability &
6865                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6866                                 priv->staging_rxon.flags |=
6867                                         RXON_FLG_SHORT_SLOT_MSK;
6868                         else
6869                                 priv->staging_rxon.flags &=
6870                                         ~RXON_FLG_SHORT_SLOT_MSK;
6871
6872                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6873                                 priv->staging_rxon.flags &=
6874                                         ~RXON_FLG_SHORT_SLOT_MSK;
6875                 }
6876                 /* restore RXON assoc */
6877                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6878                 iwl3945_commit_rxon(priv);
6879                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6880         }
6881         iwl3945_send_beacon_cmd(priv);
6882
6883         /* FIXME - we need to add code here to detect a totally new
6884          * configuration, reset the AP, unassoc, rxon timing, assoc,
6885          * clear sta table, add BCAST sta... */
6886 }
6887
6888 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6889                                         struct ieee80211_vif *vif,
6890                                     struct ieee80211_if_conf *conf)
6891 {
6892         struct iwl3945_priv *priv = hw->priv;
6893         DECLARE_MAC_BUF(mac);
6894         unsigned long flags;
6895         int rc;
6896
6897         if (conf == NULL)
6898                 return -EIO;
6899
6900         if (priv->vif != vif) {
6901                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6902                 return 0;
6903         }
6904
6905         /* XXX: this MUST use conf->mac_addr */
6906
6907         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6908             (!conf->beacon || !conf->ssid_len)) {
6909                 IWL_DEBUG_MAC80211
6910                     ("Leaving in AP mode because HostAPD is not ready.\n");
6911                 return 0;
6912         }
6913
6914         if (!iwl3945_is_alive(priv))
6915                 return -EAGAIN;
6916
6917         mutex_lock(&priv->mutex);
6918
6919         if (conf->bssid)
6920                 IWL_DEBUG_MAC80211("bssid: %s\n",
6921                                    print_mac(mac, conf->bssid));
6922
6923 /*
6924  * very dubious code was here; the probe filtering flag is never set:
6925  *
6926         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6927             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6928  */
6929
6930         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6931                 if (!conf->bssid) {
6932                         conf->bssid = priv->mac_addr;
6933                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6934                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6935                                            print_mac(mac, conf->bssid));
6936                 }
6937                 if (priv->ibss_beacon)
6938                         dev_kfree_skb(priv->ibss_beacon);
6939
6940                 priv->ibss_beacon = conf->beacon;
6941         }
6942
6943         if (iwl3945_is_rfkill(priv))
6944                 goto done;
6945
6946         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6947             !is_multicast_ether_addr(conf->bssid)) {
6948                 /* If there is currently a HW scan going on in the background
6949                  * then we need to cancel it else the RXON below will fail. */
6950                 if (iwl3945_scan_cancel_timeout(priv, 100)) {
6951                         IWL_WARNING("Aborted scan still in progress "
6952                                     "after 100ms\n");
6953                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6954                         mutex_unlock(&priv->mutex);
6955                         return -EAGAIN;
6956                 }
6957                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6958
6959                 /* TODO: Audit driver for usage of these members and see
6960                  * if mac80211 deprecates them (priv->bssid looks like it
6961                  * shouldn't be there, but I haven't scanned the IBSS code
6962                  * to verify) - jpk */
6963                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6964
6965                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6966                         iwl3945_config_ap(priv);
6967                 else {
6968                         rc = iwl3945_commit_rxon(priv);
6969                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6970                                 iwl3945_add_station(priv,
6971                                         priv->active_rxon.bssid_addr, 1, 0);
6972                 }
6973
6974         } else {
6975                 iwl3945_scan_cancel_timeout(priv, 100);
6976                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6977                 iwl3945_commit_rxon(priv);
6978         }
6979
6980  done:
6981         spin_lock_irqsave(&priv->lock, flags);
6982         if (!conf->ssid_len)
6983                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6984         else
6985                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6986
6987         priv->essid_len = conf->ssid_len;
6988         spin_unlock_irqrestore(&priv->lock, flags);
6989
6990         IWL_DEBUG_MAC80211("leave\n");
6991         mutex_unlock(&priv->mutex);
6992
6993         return 0;
6994 }
6995
6996 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6997                                  unsigned int changed_flags,
6998                                  unsigned int *total_flags,
6999                                  int mc_count, struct dev_addr_list *mc_list)
7000 {
7001         /*
7002          * XXX: dummy
7003          * see also iwl3945_connection_init_rx_config
7004          */
7005         struct iwl3945_priv *priv = hw->priv;
7006         int new_flags = 0;
7007         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
7008                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
7009                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
7010                                            IEEE80211_IF_TYPE_MNTR,
7011                                            changed_flags, *total_flags);
7012                         /* queue work 'cuz mac80211 is holding a lock which
7013                          * prevents us from issuing (synchronous) f/w cmds */
7014                         queue_work(priv->workqueue, &priv->set_monitor);
7015                         new_flags &= FIF_PROMISC_IN_BSS |
7016                                      FIF_OTHER_BSS |
7017                                      FIF_ALLMULTI;
7018                 }
7019         }
7020         *total_flags = new_flags;
7021 }
7022
7023 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
7024                                      struct ieee80211_if_init_conf *conf)
7025 {
7026         struct iwl3945_priv *priv = hw->priv;
7027
7028         IWL_DEBUG_MAC80211("enter\n");
7029
7030         mutex_lock(&priv->mutex);
7031
7032         if (iwl3945_is_ready_rf(priv)) {
7033                 iwl3945_scan_cancel_timeout(priv, 100);
7034                 cancel_delayed_work(&priv->post_associate);
7035                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7036                 iwl3945_commit_rxon(priv);
7037         }
7038         if (priv->vif == conf->vif) {
7039                 priv->vif = NULL;
7040                 memset(priv->bssid, 0, ETH_ALEN);
7041                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7042                 priv->essid_len = 0;
7043         }
7044         mutex_unlock(&priv->mutex);
7045
7046         IWL_DEBUG_MAC80211("leave\n");
7047 }
7048
7049 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7050 {
7051         int rc = 0;
7052         unsigned long flags;
7053         struct iwl3945_priv *priv = hw->priv;
7054
7055         IWL_DEBUG_MAC80211("enter\n");
7056
7057         mutex_lock(&priv->mutex);
7058         spin_lock_irqsave(&priv->lock, flags);
7059
7060         if (!iwl3945_is_ready_rf(priv)) {
7061                 rc = -EIO;
7062                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7063                 goto out_unlock;
7064         }
7065
7066         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7067                 rc = -EIO;
7068                 IWL_ERROR("ERROR: APs don't scan\n");
7069                 goto out_unlock;
7070         }
7071
7072         /* we don't schedule scan within next_scan_jiffies period */
7073         if (priv->next_scan_jiffies &&
7074                         time_after(priv->next_scan_jiffies, jiffies)) {
7075                 rc = -EAGAIN;
7076                 goto out_unlock;
7077         }
7078         /* if we just finished scan ask for delay for a broadcast scan */
7079         if ((len == 0) && priv->last_scan_jiffies &&
7080             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7081                        jiffies)) {
7082                 rc = -EAGAIN;
7083                 goto out_unlock;
7084         }
7085         if (len) {
7086                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7087                                iwl3945_escape_essid(ssid, len), (int)len);
7088
7089                 priv->one_direct_scan = 1;
7090                 priv->direct_ssid_len = (u8)
7091                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7092                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7093         } else
7094                 priv->one_direct_scan = 0;
7095
7096         rc = iwl3945_scan_initiate(priv);
7097
7098         IWL_DEBUG_MAC80211("leave\n");
7099
7100 out_unlock:
7101         spin_unlock_irqrestore(&priv->lock, flags);
7102         mutex_unlock(&priv->mutex);
7103
7104         return rc;
7105 }
7106
7107 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7108                            const u8 *local_addr, const u8 *addr,
7109                            struct ieee80211_key_conf *key)
7110 {
7111         struct iwl3945_priv *priv = hw->priv;
7112         int rc = 0;
7113         u8 sta_id;
7114
7115         IWL_DEBUG_MAC80211("enter\n");
7116
7117         if (!iwl3945_param_hwcrypto) {
7118                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7119                 return -EOPNOTSUPP;
7120         }
7121
7122         if (is_zero_ether_addr(addr))
7123                 /* only support pairwise keys */
7124                 return -EOPNOTSUPP;
7125
7126         sta_id = iwl3945_hw_find_station(priv, addr);
7127         if (sta_id == IWL_INVALID_STATION) {
7128                 DECLARE_MAC_BUF(mac);
7129
7130                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7131                                    print_mac(mac, addr));
7132                 return -EINVAL;
7133         }
7134
7135         mutex_lock(&priv->mutex);
7136
7137         iwl3945_scan_cancel_timeout(priv, 100);
7138
7139         switch (cmd) {
7140         case  SET_KEY:
7141                 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7142                 if (!rc) {
7143                         iwl3945_set_rxon_hwcrypto(priv, 1);
7144                         iwl3945_commit_rxon(priv);
7145                         key->hw_key_idx = sta_id;
7146                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7147                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7148                 }
7149                 break;
7150         case DISABLE_KEY:
7151                 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7152                 if (!rc) {
7153                         iwl3945_set_rxon_hwcrypto(priv, 0);
7154                         iwl3945_commit_rxon(priv);
7155                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7156                 }
7157                 break;
7158         default:
7159                 rc = -EINVAL;
7160         }
7161
7162         IWL_DEBUG_MAC80211("leave\n");
7163         mutex_unlock(&priv->mutex);
7164
7165         return rc;
7166 }
7167
7168 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
7169                            const struct ieee80211_tx_queue_params *params)
7170 {
7171         struct iwl3945_priv *priv = hw->priv;
7172         unsigned long flags;
7173         int q;
7174
7175         IWL_DEBUG_MAC80211("enter\n");
7176
7177         if (!iwl3945_is_ready_rf(priv)) {
7178                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7179                 return -EIO;
7180         }
7181
7182         if (queue >= AC_NUM) {
7183                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7184                 return 0;
7185         }
7186
7187         if (!priv->qos_data.qos_enable) {
7188                 priv->qos_data.qos_active = 0;
7189                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7190                 return 0;
7191         }
7192         q = AC_NUM - 1 - queue;
7193
7194         spin_lock_irqsave(&priv->lock, flags);
7195
7196         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7197         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7198         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7199         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7200                         cpu_to_le16((params->txop * 32));
7201
7202         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7203         priv->qos_data.qos_active = 1;
7204
7205         spin_unlock_irqrestore(&priv->lock, flags);
7206
7207         mutex_lock(&priv->mutex);
7208         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7209                 iwl3945_activate_qos(priv, 1);
7210         else if (priv->assoc_id && iwl3945_is_associated(priv))
7211                 iwl3945_activate_qos(priv, 0);
7212
7213         mutex_unlock(&priv->mutex);
7214
7215         IWL_DEBUG_MAC80211("leave\n");
7216         return 0;
7217 }
7218
7219 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7220                                 struct ieee80211_tx_queue_stats *stats)
7221 {
7222         struct iwl3945_priv *priv = hw->priv;
7223         int i, avail;
7224         struct iwl3945_tx_queue *txq;
7225         struct iwl3945_queue *q;
7226         unsigned long flags;
7227
7228         IWL_DEBUG_MAC80211("enter\n");
7229
7230         if (!iwl3945_is_ready_rf(priv)) {
7231                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7232                 return -EIO;
7233         }
7234
7235         spin_lock_irqsave(&priv->lock, flags);
7236
7237         for (i = 0; i < AC_NUM; i++) {
7238                 txq = &priv->txq[i];
7239                 q = &txq->q;
7240                 avail = iwl3945_queue_space(q);
7241
7242                 stats[i].len = q->n_window - avail;
7243                 stats[i].limit = q->n_window - q->high_mark;
7244                 stats[i].count = q->n_window;
7245
7246         }
7247         spin_unlock_irqrestore(&priv->lock, flags);
7248
7249         IWL_DEBUG_MAC80211("leave\n");
7250
7251         return 0;
7252 }
7253
7254 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7255                              struct ieee80211_low_level_stats *stats)
7256 {
7257         IWL_DEBUG_MAC80211("enter\n");
7258         IWL_DEBUG_MAC80211("leave\n");
7259
7260         return 0;
7261 }
7262
7263 static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
7264 {
7265         IWL_DEBUG_MAC80211("enter\n");
7266         IWL_DEBUG_MAC80211("leave\n");
7267
7268         return 0;
7269 }
7270
7271 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7272 {
7273         struct iwl3945_priv *priv = hw->priv;
7274         unsigned long flags;
7275
7276         mutex_lock(&priv->mutex);
7277         IWL_DEBUG_MAC80211("enter\n");
7278
7279         iwl3945_reset_qos(priv);
7280
7281         cancel_delayed_work(&priv->post_associate);
7282
7283         spin_lock_irqsave(&priv->lock, flags);
7284         priv->assoc_id = 0;
7285         priv->assoc_capability = 0;
7286         priv->call_post_assoc_from_beacon = 0;
7287
7288         /* new association get rid of ibss beacon skb */
7289         if (priv->ibss_beacon)
7290                 dev_kfree_skb(priv->ibss_beacon);
7291
7292         priv->ibss_beacon = NULL;
7293
7294         priv->beacon_int = priv->hw->conf.beacon_int;
7295         priv->timestamp1 = 0;
7296         priv->timestamp0 = 0;
7297         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7298                 priv->beacon_int = 0;
7299
7300         spin_unlock_irqrestore(&priv->lock, flags);
7301
7302         if (!iwl3945_is_ready_rf(priv)) {
7303                 IWL_DEBUG_MAC80211("leave - not ready\n");
7304                 mutex_unlock(&priv->mutex);
7305                 return;
7306         }
7307
7308         /* we are restarting association process
7309          * clear RXON_FILTER_ASSOC_MSK bit
7310         */
7311         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7312                 iwl3945_scan_cancel_timeout(priv, 100);
7313                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7314                 iwl3945_commit_rxon(priv);
7315         }
7316
7317         /* Per mac80211.h: This is only used in IBSS mode... */
7318         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7319
7320                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7321                 mutex_unlock(&priv->mutex);
7322                 return;
7323         }
7324
7325         iwl3945_set_rate(priv);
7326
7327         mutex_unlock(&priv->mutex);
7328
7329         IWL_DEBUG_MAC80211("leave\n");
7330
7331 }
7332
7333 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
7334 {
7335         struct iwl3945_priv *priv = hw->priv;
7336         unsigned long flags;
7337
7338         mutex_lock(&priv->mutex);
7339         IWL_DEBUG_MAC80211("enter\n");
7340
7341         if (!iwl3945_is_ready_rf(priv)) {
7342                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7343                 mutex_unlock(&priv->mutex);
7344                 return -EIO;
7345         }
7346
7347         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7348                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7349                 mutex_unlock(&priv->mutex);
7350                 return -EIO;
7351         }
7352
7353         spin_lock_irqsave(&priv->lock, flags);
7354
7355         if (priv->ibss_beacon)
7356                 dev_kfree_skb(priv->ibss_beacon);
7357
7358         priv->ibss_beacon = skb;
7359
7360         priv->assoc_id = 0;
7361
7362         IWL_DEBUG_MAC80211("leave\n");
7363         spin_unlock_irqrestore(&priv->lock, flags);
7364
7365         iwl3945_reset_qos(priv);
7366
7367         queue_work(priv->workqueue, &priv->post_associate.work);
7368
7369         mutex_unlock(&priv->mutex);
7370
7371         return 0;
7372 }
7373
7374 /*****************************************************************************
7375  *
7376  * sysfs attributes
7377  *
7378  *****************************************************************************/
7379
7380 #ifdef CONFIG_IWL3945_DEBUG
7381
7382 /*
7383  * The following adds a new attribute to the sysfs representation
7384  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7385  * used for controlling the debug level.
7386  *
7387  * See the level definitions in iwl for details.
7388  */
7389
7390 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7391 {
7392         return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7393 }
7394 static ssize_t store_debug_level(struct device_driver *d,
7395                                  const char *buf, size_t count)
7396 {
7397         char *p = (char *)buf;
7398         u32 val;
7399
7400         val = simple_strtoul(p, &p, 0);
7401         if (p == buf)
7402                 printk(KERN_INFO DRV_NAME
7403                        ": %s is not in hex or decimal form.\n", buf);
7404         else
7405                 iwl3945_debug_level = val;
7406
7407         return strnlen(buf, count);
7408 }
7409
7410 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7411                    show_debug_level, store_debug_level);
7412
7413 #endif /* CONFIG_IWL3945_DEBUG */
7414
7415 static ssize_t show_rf_kill(struct device *d,
7416                             struct device_attribute *attr, char *buf)
7417 {
7418         /*
7419          * 0 - RF kill not enabled
7420          * 1 - SW based RF kill active (sysfs)
7421          * 2 - HW based RF kill active
7422          * 3 - Both HW and SW based RF kill active
7423          */
7424         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7425         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7426                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7427
7428         return sprintf(buf, "%i\n", val);
7429 }
7430
7431 static ssize_t store_rf_kill(struct device *d,
7432                              struct device_attribute *attr,
7433                              const char *buf, size_t count)
7434 {
7435         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7436
7437         mutex_lock(&priv->mutex);
7438         iwl3945_radio_kill_sw(priv, buf[0] == '1');
7439         mutex_unlock(&priv->mutex);
7440
7441         return count;
7442 }
7443
7444 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7445
7446 static ssize_t show_temperature(struct device *d,
7447                                 struct device_attribute *attr, char *buf)
7448 {
7449         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7450
7451         if (!iwl3945_is_alive(priv))
7452                 return -EAGAIN;
7453
7454         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7455 }
7456
7457 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7458
7459 static ssize_t show_rs_window(struct device *d,
7460                               struct device_attribute *attr,
7461                               char *buf)
7462 {
7463         struct iwl3945_priv *priv = d->driver_data;
7464         return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7465 }
7466 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7467
7468 static ssize_t show_tx_power(struct device *d,
7469                              struct device_attribute *attr, char *buf)
7470 {
7471         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7472         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7473 }
7474
7475 static ssize_t store_tx_power(struct device *d,
7476                               struct device_attribute *attr,
7477                               const char *buf, size_t count)
7478 {
7479         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7480         char *p = (char *)buf;
7481         u32 val;
7482
7483         val = simple_strtoul(p, &p, 10);
7484         if (p == buf)
7485                 printk(KERN_INFO DRV_NAME
7486                        ": %s is not in decimal form.\n", buf);
7487         else
7488                 iwl3945_hw_reg_set_txpower(priv, val);
7489
7490         return count;
7491 }
7492
7493 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7494
7495 static ssize_t show_flags(struct device *d,
7496                           struct device_attribute *attr, char *buf)
7497 {
7498         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7499
7500         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7501 }
7502
7503 static ssize_t store_flags(struct device *d,
7504                            struct device_attribute *attr,
7505                            const char *buf, size_t count)
7506 {
7507         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7508         u32 flags = simple_strtoul(buf, NULL, 0);
7509
7510         mutex_lock(&priv->mutex);
7511         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7512                 /* Cancel any currently running scans... */
7513                 if (iwl3945_scan_cancel_timeout(priv, 100))
7514                         IWL_WARNING("Could not cancel scan.\n");
7515                 else {
7516                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7517                                        flags);
7518                         priv->staging_rxon.flags = cpu_to_le32(flags);
7519                         iwl3945_commit_rxon(priv);
7520                 }
7521         }
7522         mutex_unlock(&priv->mutex);
7523
7524         return count;
7525 }
7526
7527 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7528
7529 static ssize_t show_filter_flags(struct device *d,
7530                                  struct device_attribute *attr, char *buf)
7531 {
7532         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7533
7534         return sprintf(buf, "0x%04X\n",
7535                 le32_to_cpu(priv->active_rxon.filter_flags));
7536 }
7537
7538 static ssize_t store_filter_flags(struct device *d,
7539                                   struct device_attribute *attr,
7540                                   const char *buf, size_t count)
7541 {
7542         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7543         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7544
7545         mutex_lock(&priv->mutex);
7546         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7547                 /* Cancel any currently running scans... */
7548                 if (iwl3945_scan_cancel_timeout(priv, 100))
7549                         IWL_WARNING("Could not cancel scan.\n");
7550                 else {
7551                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7552                                        "0x%04X\n", filter_flags);
7553                         priv->staging_rxon.filter_flags =
7554                                 cpu_to_le32(filter_flags);
7555                         iwl3945_commit_rxon(priv);
7556                 }
7557         }
7558         mutex_unlock(&priv->mutex);
7559
7560         return count;
7561 }
7562
7563 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7564                    store_filter_flags);
7565
7566 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7567
7568 static ssize_t show_measurement(struct device *d,
7569                                 struct device_attribute *attr, char *buf)
7570 {
7571         struct iwl3945_priv *priv = dev_get_drvdata(d);
7572         struct iwl3945_spectrum_notification measure_report;
7573         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7574         u8 *data = (u8 *) & measure_report;
7575         unsigned long flags;
7576
7577         spin_lock_irqsave(&priv->lock, flags);
7578         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7579                 spin_unlock_irqrestore(&priv->lock, flags);
7580                 return 0;
7581         }
7582         memcpy(&measure_report, &priv->measure_report, size);
7583         priv->measurement_status = 0;
7584         spin_unlock_irqrestore(&priv->lock, flags);
7585
7586         while (size && (PAGE_SIZE - len)) {
7587                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7588                                    PAGE_SIZE - len, 1);
7589                 len = strlen(buf);
7590                 if (PAGE_SIZE - len)
7591                         buf[len++] = '\n';
7592
7593                 ofs += 16;
7594                 size -= min(size, 16U);
7595         }
7596
7597         return len;
7598 }
7599
7600 static ssize_t store_measurement(struct device *d,
7601                                  struct device_attribute *attr,
7602                                  const char *buf, size_t count)
7603 {
7604         struct iwl3945_priv *priv = dev_get_drvdata(d);
7605         struct ieee80211_measurement_params params = {
7606                 .channel = le16_to_cpu(priv->active_rxon.channel),
7607                 .start_time = cpu_to_le64(priv->last_tsf),
7608                 .duration = cpu_to_le16(1),
7609         };
7610         u8 type = IWL_MEASURE_BASIC;
7611         u8 buffer[32];
7612         u8 channel;
7613
7614         if (count) {
7615                 char *p = buffer;
7616                 strncpy(buffer, buf, min(sizeof(buffer), count));
7617                 channel = simple_strtoul(p, NULL, 0);
7618                 if (channel)
7619                         params.channel = channel;
7620
7621                 p = buffer;
7622                 while (*p && *p != ' ')
7623                         p++;
7624                 if (*p)
7625                         type = simple_strtoul(p + 1, NULL, 0);
7626         }
7627
7628         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7629                        "channel %d (for '%s')\n", type, params.channel, buf);
7630         iwl3945_get_measurement(priv, &params, type);
7631
7632         return count;
7633 }
7634
7635 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7636                    show_measurement, store_measurement);
7637 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7638
7639 static ssize_t store_retry_rate(struct device *d,
7640                                 struct device_attribute *attr,
7641                                 const char *buf, size_t count)
7642 {
7643         struct iwl3945_priv *priv = dev_get_drvdata(d);
7644
7645         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7646         if (priv->retry_rate <= 0)
7647                 priv->retry_rate = 1;
7648
7649         return count;
7650 }
7651
7652 static ssize_t show_retry_rate(struct device *d,
7653                                struct device_attribute *attr, char *buf)
7654 {
7655         struct iwl3945_priv *priv = dev_get_drvdata(d);
7656         return sprintf(buf, "%d", priv->retry_rate);
7657 }
7658
7659 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7660                    store_retry_rate);
7661
7662 static ssize_t store_power_level(struct device *d,
7663                                  struct device_attribute *attr,
7664                                  const char *buf, size_t count)
7665 {
7666         struct iwl3945_priv *priv = dev_get_drvdata(d);
7667         int rc;
7668         int mode;
7669
7670         mode = simple_strtoul(buf, NULL, 0);
7671         mutex_lock(&priv->mutex);
7672
7673         if (!iwl3945_is_ready(priv)) {
7674                 rc = -EAGAIN;
7675                 goto out;
7676         }
7677
7678         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7679                 mode = IWL_POWER_AC;
7680         else
7681                 mode |= IWL_POWER_ENABLED;
7682
7683         if (mode != priv->power_mode) {
7684                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7685                 if (rc) {
7686                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7687                         goto out;
7688                 }
7689                 priv->power_mode = mode;
7690         }
7691
7692         rc = count;
7693
7694  out:
7695         mutex_unlock(&priv->mutex);
7696         return rc;
7697 }
7698
7699 #define MAX_WX_STRING 80
7700
7701 /* Values are in microsecond */
7702 static const s32 timeout_duration[] = {
7703         350000,
7704         250000,
7705         75000,
7706         37000,
7707         25000,
7708 };
7709 static const s32 period_duration[] = {
7710         400000,
7711         700000,
7712         1000000,
7713         1000000,
7714         1000000
7715 };
7716
7717 static ssize_t show_power_level(struct device *d,
7718                                 struct device_attribute *attr, char *buf)
7719 {
7720         struct iwl3945_priv *priv = dev_get_drvdata(d);
7721         int level = IWL_POWER_LEVEL(priv->power_mode);
7722         char *p = buf;
7723
7724         p += sprintf(p, "%d ", level);
7725         switch (level) {
7726         case IWL_POWER_MODE_CAM:
7727         case IWL_POWER_AC:
7728                 p += sprintf(p, "(AC)");
7729                 break;
7730         case IWL_POWER_BATTERY:
7731                 p += sprintf(p, "(BATTERY)");
7732                 break;
7733         default:
7734                 p += sprintf(p,
7735                              "(Timeout %dms, Period %dms)",
7736                              timeout_duration[level - 1] / 1000,
7737                              period_duration[level - 1] / 1000);
7738         }
7739
7740         if (!(priv->power_mode & IWL_POWER_ENABLED))
7741                 p += sprintf(p, " OFF\n");
7742         else
7743                 p += sprintf(p, " \n");
7744
7745         return (p - buf + 1);
7746
7747 }
7748
7749 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7750                    store_power_level);
7751
7752 static ssize_t show_channels(struct device *d,
7753                              struct device_attribute *attr, char *buf)
7754 {
7755         /* all this shit doesn't belong into sysfs anyway */
7756         return 0;
7757 }
7758
7759 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7760
7761 static ssize_t show_statistics(struct device *d,
7762                                struct device_attribute *attr, char *buf)
7763 {
7764         struct iwl3945_priv *priv = dev_get_drvdata(d);
7765         u32 size = sizeof(struct iwl3945_notif_statistics);
7766         u32 len = 0, ofs = 0;
7767         u8 *data = (u8 *) & priv->statistics;
7768         int rc = 0;
7769
7770         if (!iwl3945_is_alive(priv))
7771                 return -EAGAIN;
7772
7773         mutex_lock(&priv->mutex);
7774         rc = iwl3945_send_statistics_request(priv);
7775         mutex_unlock(&priv->mutex);
7776
7777         if (rc) {
7778                 len = sprintf(buf,
7779                               "Error sending statistics request: 0x%08X\n", rc);
7780                 return len;
7781         }
7782
7783         while (size && (PAGE_SIZE - len)) {
7784                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7785                                    PAGE_SIZE - len, 1);
7786                 len = strlen(buf);
7787                 if (PAGE_SIZE - len)
7788                         buf[len++] = '\n';
7789
7790                 ofs += 16;
7791                 size -= min(size, 16U);
7792         }
7793
7794         return len;
7795 }
7796
7797 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7798
7799 static ssize_t show_antenna(struct device *d,
7800                             struct device_attribute *attr, char *buf)
7801 {
7802         struct iwl3945_priv *priv = dev_get_drvdata(d);
7803
7804         if (!iwl3945_is_alive(priv))
7805                 return -EAGAIN;
7806
7807         return sprintf(buf, "%d\n", priv->antenna);
7808 }
7809
7810 static ssize_t store_antenna(struct device *d,
7811                              struct device_attribute *attr,
7812                              const char *buf, size_t count)
7813 {
7814         int ant;
7815         struct iwl3945_priv *priv = dev_get_drvdata(d);
7816
7817         if (count == 0)
7818                 return 0;
7819
7820         if (sscanf(buf, "%1i", &ant) != 1) {
7821                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7822                 return count;
7823         }
7824
7825         if ((ant >= 0) && (ant <= 2)) {
7826                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7827                 priv->antenna = (enum iwl3945_antenna)ant;
7828         } else
7829                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7830
7831
7832         return count;
7833 }
7834
7835 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7836
7837 static ssize_t show_status(struct device *d,
7838                            struct device_attribute *attr, char *buf)
7839 {
7840         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7841         if (!iwl3945_is_alive(priv))
7842                 return -EAGAIN;
7843         return sprintf(buf, "0x%08x\n", (int)priv->status);
7844 }
7845
7846 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7847
7848 static ssize_t dump_error_log(struct device *d,
7849                               struct device_attribute *attr,
7850                               const char *buf, size_t count)
7851 {
7852         char *p = (char *)buf;
7853
7854         if (p[0] == '1')
7855                 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
7856
7857         return strnlen(buf, count);
7858 }
7859
7860 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7861
7862 static ssize_t dump_event_log(struct device *d,
7863                               struct device_attribute *attr,
7864                               const char *buf, size_t count)
7865 {
7866         char *p = (char *)buf;
7867
7868         if (p[0] == '1')
7869                 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
7870
7871         return strnlen(buf, count);
7872 }
7873
7874 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7875
7876 /*****************************************************************************
7877  *
7878  * driver setup and teardown
7879  *
7880  *****************************************************************************/
7881
7882 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
7883 {
7884         priv->workqueue = create_workqueue(DRV_NAME);
7885
7886         init_waitqueue_head(&priv->wait_command_queue);
7887
7888         INIT_WORK(&priv->up, iwl3945_bg_up);
7889         INIT_WORK(&priv->restart, iwl3945_bg_restart);
7890         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7891         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7892         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7893         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7894         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7895         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7896         INIT_WORK(&priv->set_monitor, iwl3945_bg_set_monitor);
7897         INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
7898         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7899         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7900         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7901
7902         iwl3945_hw_setup_deferred_work(priv);
7903
7904         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7905                      iwl3945_irq_tasklet, (unsigned long)priv);
7906 }
7907
7908 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
7909 {
7910         iwl3945_hw_cancel_deferred_work(priv);
7911
7912         cancel_delayed_work_sync(&priv->init_alive_start);
7913         cancel_delayed_work(&priv->scan_check);
7914         cancel_delayed_work(&priv->alive_start);
7915         cancel_delayed_work(&priv->post_associate);
7916         cancel_work_sync(&priv->beacon_update);
7917 }
7918
7919 static struct attribute *iwl3945_sysfs_entries[] = {
7920         &dev_attr_antenna.attr,
7921         &dev_attr_channels.attr,
7922         &dev_attr_dump_errors.attr,
7923         &dev_attr_dump_events.attr,
7924         &dev_attr_flags.attr,
7925         &dev_attr_filter_flags.attr,
7926 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7927         &dev_attr_measurement.attr,
7928 #endif
7929         &dev_attr_power_level.attr,
7930         &dev_attr_retry_rate.attr,
7931         &dev_attr_rf_kill.attr,
7932         &dev_attr_rs_window.attr,
7933         &dev_attr_statistics.attr,
7934         &dev_attr_status.attr,
7935         &dev_attr_temperature.attr,
7936         &dev_attr_tx_power.attr,
7937
7938         NULL
7939 };
7940
7941 static struct attribute_group iwl3945_attribute_group = {
7942         .name = NULL,           /* put in device directory */
7943         .attrs = iwl3945_sysfs_entries,
7944 };
7945
7946 static struct ieee80211_ops iwl3945_hw_ops = {
7947         .tx = iwl3945_mac_tx,
7948         .start = iwl3945_mac_start,
7949         .stop = iwl3945_mac_stop,
7950         .add_interface = iwl3945_mac_add_interface,
7951         .remove_interface = iwl3945_mac_remove_interface,
7952         .config = iwl3945_mac_config,
7953         .config_interface = iwl3945_mac_config_interface,
7954         .configure_filter = iwl3945_configure_filter,
7955         .set_key = iwl3945_mac_set_key,
7956         .get_stats = iwl3945_mac_get_stats,
7957         .get_tx_stats = iwl3945_mac_get_tx_stats,
7958         .conf_tx = iwl3945_mac_conf_tx,
7959         .get_tsf = iwl3945_mac_get_tsf,
7960         .reset_tsf = iwl3945_mac_reset_tsf,
7961         .beacon_update = iwl3945_mac_beacon_update,
7962         .hw_scan = iwl3945_mac_hw_scan
7963 };
7964
7965 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7966 {
7967         int err = 0;
7968         struct iwl3945_priv *priv;
7969         struct ieee80211_hw *hw;
7970         struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
7971         int i;
7972         unsigned long flags;
7973         DECLARE_MAC_BUF(mac);
7974
7975         /* Disabling hardware scan means that mac80211 will perform scans
7976          * "the hard way", rather than using device's scan. */
7977         if (iwl3945_param_disable_hw_scan) {
7978                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7979                 iwl3945_hw_ops.hw_scan = NULL;
7980         }
7981
7982         if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
7983             (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
7984                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7985                           IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7986                 err = -EINVAL;
7987                 goto out;
7988         }
7989
7990         /* mac80211 allocates memory for this device instance, including
7991          *   space for this driver's private structure */
7992         hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
7993         if (hw == NULL) {
7994                 IWL_ERROR("Can not allocate network device\n");
7995                 err = -ENOMEM;
7996                 goto out;
7997         }
7998         SET_IEEE80211_DEV(hw, &pdev->dev);
7999
8000         hw->rate_control_algorithm = "iwl-3945-rs";
8001
8002         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8003         priv = hw->priv;
8004         priv->hw = hw;
8005
8006         priv->pci_dev = pdev;
8007         priv->cfg = cfg;
8008
8009         /* Select antenna (may be helpful if only one antenna is connected) */
8010         priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
8011 #ifdef CONFIG_IWL3945_DEBUG
8012         iwl3945_debug_level = iwl3945_param_debug;
8013         atomic_set(&priv->restrict_refcnt, 0);
8014 #endif
8015         priv->retry_rate = 1;
8016
8017         priv->ibss_beacon = NULL;
8018
8019         /* Tell mac80211 our characteristics */
8020         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
8021                     IEEE80211_HW_SIGNAL_DBM |
8022                     IEEE80211_HW_NOISE_DBM;
8023
8024         /* 4 EDCA QOS priorities */
8025         hw->queues = 4;
8026
8027         spin_lock_init(&priv->lock);
8028         spin_lock_init(&priv->power_data.lock);
8029         spin_lock_init(&priv->sta_lock);
8030         spin_lock_init(&priv->hcmd_lock);
8031
8032         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8033                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8034
8035         INIT_LIST_HEAD(&priv->free_frames);
8036
8037         mutex_init(&priv->mutex);
8038         if (pci_enable_device(pdev)) {
8039                 err = -ENODEV;
8040                 goto out_ieee80211_free_hw;
8041         }
8042
8043         pci_set_master(pdev);
8044
8045         /* Clear the driver's (not device's) station table */
8046         iwl3945_clear_stations_table(priv);
8047
8048         priv->data_retry_limit = -1;
8049         priv->ieee_channels = NULL;
8050         priv->ieee_rates = NULL;
8051         priv->band = IEEE80211_BAND_2GHZ;
8052
8053         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8054         if (!err)
8055                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8056         if (err) {
8057                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8058                 goto out_pci_disable_device;
8059         }
8060
8061         pci_set_drvdata(pdev, priv);
8062         err = pci_request_regions(pdev, DRV_NAME);
8063         if (err)
8064                 goto out_pci_disable_device;
8065
8066         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8067          * PCI Tx retries from interfering with C3 CPU state */
8068         pci_write_config_byte(pdev, 0x41, 0x00);
8069
8070         priv->hw_base = pci_iomap(pdev, 0, 0);
8071         if (!priv->hw_base) {
8072                 err = -ENODEV;
8073                 goto out_pci_release_regions;
8074         }
8075
8076         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8077                         (unsigned long long) pci_resource_len(pdev, 0));
8078         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8079
8080         /* Initialize module parameter values here */
8081
8082         /* Disable radio (SW RF KILL) via parameter when loading driver */
8083         if (iwl3945_param_disable) {
8084                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8085                 IWL_DEBUG_INFO("Radio disabled.\n");
8086         }
8087
8088         priv->iw_mode = IEEE80211_IF_TYPE_STA;
8089
8090         printk(KERN_INFO DRV_NAME
8091                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8092
8093         /* Device-specific setup */
8094         if (iwl3945_hw_set_hw_setting(priv)) {
8095                 IWL_ERROR("failed to set hw settings\n");
8096                 goto out_iounmap;
8097         }
8098
8099         if (iwl3945_param_qos_enable)
8100                 priv->qos_data.qos_enable = 1;
8101
8102         iwl3945_reset_qos(priv);
8103
8104         priv->qos_data.qos_active = 0;
8105         priv->qos_data.qos_cap.val = 0;
8106
8107         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8108         iwl3945_setup_deferred_work(priv);
8109         iwl3945_setup_rx_handlers(priv);
8110
8111         priv->rates_mask = IWL_RATES_MASK;
8112         /* If power management is turned on, default to AC mode */
8113         priv->power_mode = IWL_POWER_AC;
8114         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8115
8116         spin_lock_irqsave(&priv->lock, flags);
8117         iwl3945_disable_interrupts(priv);
8118         spin_unlock_irqrestore(&priv->lock, flags);
8119
8120         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8121         if (err) {
8122                 IWL_ERROR("failed to create sysfs device attributes\n");
8123                 goto out_release_irq;
8124         }
8125
8126         /* nic init */
8127         iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8128                     CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8129
8130         iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8131         err = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
8132                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8133                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8134         if (err < 0) {
8135                 IWL_DEBUG_INFO("Failed to init the card\n");
8136                 goto out_remove_sysfs;
8137         }
8138         /* Read the EEPROM */
8139         err = iwl3945_eeprom_init(priv);
8140         if (err) {
8141                 IWL_ERROR("Unable to init EEPROM\n");
8142                 goto out_remove_sysfs;
8143         }
8144         /* MAC Address location in EEPROM same for 3945/4965 */
8145         get_eeprom_mac(priv, priv->mac_addr);
8146         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8147         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8148
8149         err = iwl3945_init_channel_map(priv);
8150         if (err) {
8151                 IWL_ERROR("initializing regulatory failed: %d\n", err);
8152                 goto out_remove_sysfs;
8153         }
8154
8155         err = iwl3945_init_geos(priv);
8156         if (err) {
8157                 IWL_ERROR("initializing geos failed: %d\n", err);
8158                 goto out_free_channel_map;
8159         }
8160
8161         err = ieee80211_register_hw(priv->hw);
8162         if (err) {
8163                 IWL_ERROR("Failed to register network device (error %d)\n", err);
8164                 goto out_free_geos;
8165         }
8166
8167         priv->hw->conf.beacon_int = 100;
8168         priv->mac80211_registered = 1;
8169         pci_save_state(pdev);
8170         pci_disable_device(pdev);
8171
8172         return 0;
8173
8174  out_free_geos:
8175         iwl3945_free_geos(priv);
8176  out_free_channel_map:
8177         iwl3945_free_channel_map(priv);
8178  out_remove_sysfs:
8179         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8180
8181  out_release_irq:
8182         destroy_workqueue(priv->workqueue);
8183         priv->workqueue = NULL;
8184         iwl3945_unset_hw_setting(priv);
8185
8186  out_iounmap:
8187         pci_iounmap(pdev, priv->hw_base);
8188  out_pci_release_regions:
8189         pci_release_regions(pdev);
8190  out_pci_disable_device:
8191         pci_disable_device(pdev);
8192         pci_set_drvdata(pdev, NULL);
8193  out_ieee80211_free_hw:
8194         ieee80211_free_hw(priv->hw);
8195  out:
8196         return err;
8197 }
8198
8199 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
8200 {
8201         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8202         struct list_head *p, *q;
8203         int i;
8204         unsigned long flags;
8205
8206         if (!priv)
8207                 return;
8208
8209         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8210
8211         set_bit(STATUS_EXIT_PENDING, &priv->status);
8212
8213         iwl3945_down(priv);
8214
8215         /* make sure we flush any pending irq or
8216          * tasklet for the driver
8217          */
8218         spin_lock_irqsave(&priv->lock, flags);
8219         iwl3945_disable_interrupts(priv);
8220         spin_unlock_irqrestore(&priv->lock, flags);
8221
8222         iwl_synchronize_irq(priv);
8223
8224         /* Free MAC hash list for ADHOC */
8225         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8226                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8227                         list_del(p);
8228                         kfree(list_entry(p, struct iwl3945_ibss_seq, list));
8229                 }
8230         }
8231
8232         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8233
8234         iwl3945_dealloc_ucode_pci(priv);
8235
8236         if (priv->rxq.bd)
8237                 iwl3945_rx_queue_free(priv, &priv->rxq);
8238         iwl3945_hw_txq_ctx_free(priv);
8239
8240         iwl3945_unset_hw_setting(priv);
8241         iwl3945_clear_stations_table(priv);
8242
8243         if (priv->mac80211_registered) {
8244                 ieee80211_unregister_hw(priv->hw);
8245         }
8246
8247         /*netif_stop_queue(dev); */
8248         flush_workqueue(priv->workqueue);
8249
8250         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8251          * priv->workqueue... so we can't take down the workqueue
8252          * until now... */
8253         destroy_workqueue(priv->workqueue);
8254         priv->workqueue = NULL;
8255
8256         pci_iounmap(pdev, priv->hw_base);
8257         pci_release_regions(pdev);
8258         pci_disable_device(pdev);
8259         pci_set_drvdata(pdev, NULL);
8260
8261         iwl3945_free_channel_map(priv);
8262         iwl3945_free_geos(priv);
8263         kfree(priv->scan);
8264         if (priv->ibss_beacon)
8265                 dev_kfree_skb(priv->ibss_beacon);
8266
8267         ieee80211_free_hw(priv->hw);
8268 }
8269
8270 #ifdef CONFIG_PM
8271
8272 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8273 {
8274         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8275
8276         if (priv->is_open) {
8277                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8278                 iwl3945_mac_stop(priv->hw);
8279                 priv->is_open = 1;
8280         }
8281
8282         pci_set_power_state(pdev, PCI_D3hot);
8283
8284         return 0;
8285 }
8286
8287 static int iwl3945_pci_resume(struct pci_dev *pdev)
8288 {
8289         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8290
8291         pci_set_power_state(pdev, PCI_D0);
8292
8293         if (priv->is_open)
8294                 iwl3945_mac_start(priv->hw);
8295
8296         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8297         return 0;
8298 }
8299
8300 #endif /* CONFIG_PM */
8301
8302 /*****************************************************************************
8303  *
8304  * driver and module entry point
8305  *
8306  *****************************************************************************/
8307
8308 static struct pci_driver iwl3945_driver = {
8309         .name = DRV_NAME,
8310         .id_table = iwl3945_hw_card_ids,
8311         .probe = iwl3945_pci_probe,
8312         .remove = __devexit_p(iwl3945_pci_remove),
8313 #ifdef CONFIG_PM
8314         .suspend = iwl3945_pci_suspend,
8315         .resume = iwl3945_pci_resume,
8316 #endif
8317 };
8318
8319 static int __init iwl3945_init(void)
8320 {
8321
8322         int ret;
8323         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8324         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8325
8326         ret = iwl3945_rate_control_register();
8327         if (ret) {
8328                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
8329                 return ret;
8330         }
8331
8332         ret = pci_register_driver(&iwl3945_driver);
8333         if (ret) {
8334                 IWL_ERROR("Unable to initialize PCI module\n");
8335                 goto error_register;
8336         }
8337 #ifdef CONFIG_IWL3945_DEBUG
8338         ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8339         if (ret) {
8340                 IWL_ERROR("Unable to create driver sysfs file\n");
8341                 goto error_debug;
8342         }
8343 #endif
8344
8345         return ret;
8346
8347 #ifdef CONFIG_IWL3945_DEBUG
8348 error_debug:
8349         pci_unregister_driver(&iwl3945_driver);
8350 #endif
8351 error_register:
8352         iwl3945_rate_control_unregister();
8353         return ret;
8354 }
8355
8356 static void __exit iwl3945_exit(void)
8357 {
8358 #ifdef CONFIG_IWL3945_DEBUG
8359         driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8360 #endif
8361         pci_unregister_driver(&iwl3945_driver);
8362         iwl3945_rate_control_unregister();
8363 }
8364
8365 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8366 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8367 module_param_named(disable, iwl3945_param_disable, int, 0444);
8368 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8369 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8370 MODULE_PARM_DESC(hwcrypto,
8371                  "using hardware crypto engine (default 0 [software])\n");
8372 module_param_named(debug, iwl3945_param_debug, int, 0444);
8373 MODULE_PARM_DESC(debug, "debug output mask");
8374 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8375 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8376
8377 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8378 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8379
8380 /* QoS */
8381 module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
8382 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8383
8384 module_exit(iwl3945_exit);
8385 module_init(iwl3945_init);