git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl4965-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/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-core.h"
  50 #include "iwl-4965.h"
  51 #include "iwl-helpers.h"
  52
  53 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
  54                                   struct iwl4965_tx_queue *txq);
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /* module parameters */
  63 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
  64 static int iwl4965_param_debug;    /* def: 0 = minimal debug log messages */
  65 static int iwl4965_param_disable;  /* def: enable radio */
  66 static int iwl4965_param_antenna;  /* def: 0 = both antennas (use diversity) */
  67 int iwl4965_param_hwcrypto;        /* def: using software encryption */
  68 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
  69 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
  70 int iwl4965_param_amsdu_size_8K;   /* def: enable 8K amsdu size */
  71
  72 /*
  73  * module name, copyright, version, etc.
  74  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  75  */
  76
  77 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  78
  79 #ifdef CONFIG_IWLWIFI_DEBUG
  80 #define VD "d"
  81 #else
  82 #define VD
  83 #endif
  84
  85 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  86 #define VS "s"
  87 #else
  88 #define VS
  89 #endif
  90
  91 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  92
  93
  94 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  95 MODULE_VERSION(DRV_VERSION);
  96 MODULE_AUTHOR(DRV_COPYRIGHT);
  97 MODULE_LICENSE("GPL");
  98
  99 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
 100 {
 101         u16 fc = le16_to_cpu(hdr->frame_control);
 102         int hdr_len = ieee80211_get_hdrlen(fc);
 103
 104         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 105                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 106         return NULL;
 107 }
 108
 109 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
 110                 struct iwl_priv *priv, enum ieee80211_band band)
 111 {
 112         return priv->hw->wiphy->bands[band];
 113 }
 114
 115 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 116 {
 117         /* Single white space is for Linksys APs */
 118         if (essid_len == 1 && essid[0] == ' ')
 119                 return 1;
 120
 121         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 122         while (essid_len) {
 123                 essid_len--;
 124                 if (essid[essid_len] != '\0')
 125                         return 0;
 126         }
 127
 128         return 1;
 129 }
 130
 131 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 132 {
 133         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 134         const char *s = essid;
 135         char *d = escaped;
 136
 137         if (iwl4965_is_empty_essid(essid, essid_len)) {
 138                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 139                 return escaped;
 140         }
 141
 142         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 143         while (essid_len--) {
 144                 if (*s == '\0') {
 145                         *d++ = '\\';
 146                         *d++ = '0';
 147                         s++;
 148                 } else
 149                         *d++ = *s++;
 150         }
 151         *d = '\0';
 152         return escaped;
 153 }
 154
 155 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 156  * DMA services
 157  *
 158  * Theory of operation
 159  *
 160  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 161  * of buffer descriptors, each of which points to one or more data buffers for
 162  * the device to read from or fill.  Driver and device exchange status of each
 163  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 164  * entries in each circular buffer, to protect against confusing empty and full
 165  * queue states.
 166  *
 167  * The device reads or writes the data in the queues via the device's several
 168  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 169  *
 170  * For Tx queue, there are low mark and high mark limits. If, after queuing
 171  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 172  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 173  * Tx queue resumed.
 174  *
 175  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 176  * queue (#4) for sending commands to the device firmware, and 15 other
 177  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 178  *
 179  * See more detailed info in iwl-4965-hw.h.
 180  ***************************************************/
 181
 182 int iwl4965_queue_space(const struct iwl4965_queue *q)
 183 {
 184         int s = q->read_ptr - q->write_ptr;
 185
 186         if (q->read_ptr > q->write_ptr)
 187                 s -= q->n_bd;
 188
 189         if (s <= 0)
 190                 s += q->n_window;
 191         /* keep some reserve to not confuse empty and full situations */
 192         s -= 2;
 193         if (s < 0)
 194                 s = 0;
 195         return s;
 196 }
 197
 198
 199 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 200 {
 201         return q->write_ptr > q->read_ptr ?
 202                 (i >= q->read_ptr && i < q->write_ptr) :
 203                 !(i < q->read_ptr && i >= q->write_ptr);
 204 }
 205
 206 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 207 {
 208         /* This is for scan command, the big buffer at end of command array */
 209         if (is_huge)
 210                 return q->n_window;     /* must be power of 2 */
 211
 212         /* Otherwise, use normal size buffers */
 213         return index & (q->n_window - 1);
 214 }
 215
 216 /**
 217  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 218  */
 219 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
 220                           int count, int slots_num, u32 id)
 221 {
 222         q->n_bd = count;
 223         q->n_window = slots_num;
 224         q->id = id;
 225
 226         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 227          * and iwl_queue_dec_wrap are broken. */
 228         BUG_ON(!is_power_of_2(count));
 229
 230         /* slots_num must be power-of-two size, otherwise
 231          * get_cmd_index is broken. */
 232         BUG_ON(!is_power_of_2(slots_num));
 233
 234         q->low_mark = q->n_window / 4;
 235         if (q->low_mark < 4)
 236                 q->low_mark = 4;
 237
 238         q->high_mark = q->n_window / 8;
 239         if (q->high_mark < 2)
 240                 q->high_mark = 2;
 241
 242         q->write_ptr = q->read_ptr = 0;
 243
 244         return 0;
 245 }
 246
 247 /**
 248  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 249  */
 250 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
 251                               struct iwl4965_tx_queue *txq, u32 id)
 252 {
 253         struct pci_dev *dev = priv->pci_dev;
 254
 255         /* Driver private data, only for Tx (not command) queues,
 256          * not shared with device. */
 257         if (id != IWL_CMD_QUEUE_NUM) {
 258                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 259                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 260                 if (!txq->txb) {
 261                         IWL_ERROR("kmalloc for auxiliary BD "
 262                                   "structures failed\n");
 263                         goto error;
 264                 }
 265         } else
 266                 txq->txb = NULL;
 267
 268         /* Circular buffer of transmit frame descriptors (TFDs),
 269          * shared with device */
 270         txq->bd = pci_alloc_consistent(dev,
 271                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 272                         &txq->q.dma_addr);
 273
 274         if (!txq->bd) {
 275                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 276                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 277                 goto error;
 278         }
 279         txq->q.id = id;
 280
 281         return 0;
 282
 283  error:
 284         if (txq->txb) {
 285                 kfree(txq->txb);
 286                 txq->txb = NULL;
 287         }
 288
 289         return -ENOMEM;
 290 }
 291
 292 /**
 293  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 294  */
 295 int iwl4965_tx_queue_init(struct iwl_priv *priv,
 296                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 297 {
 298         struct pci_dev *dev = priv->pci_dev;
 299         int len;
 300         int rc = 0;
 301
 302         /*
 303          * Alloc buffer array for commands (Tx or other types of commands).
 304          * For the command queue (#4), allocate command space + one big
 305          * command for scan, since scan command is very huge; the system will
 306          * not have two scans at the same time, so only one is needed.
 307          * For normal Tx queues (all other queues), no super-size command
 308          * space is needed.
 309          */
 310         len = sizeof(struct iwl4965_cmd) * slots_num;
 311         if (txq_id == IWL_CMD_QUEUE_NUM)
 312                 len +=  IWL_MAX_SCAN_SIZE;
 313         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 314         if (!txq->cmd)
 315                 return -ENOMEM;
 316
 317         /* Alloc driver data array and TFD circular buffer */
 318         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 319         if (rc) {
 320                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 321
 322                 return -ENOMEM;
 323         }
 324         txq->need_update = 0;
 325
 326         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 327          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 328         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 329
 330         /* Initialize queue's high/low-water marks, and head/tail indexes */
 331         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 332
 333         /* Tell device where to find queue */
 334         iwl4965_hw_tx_queue_init(priv, txq);
 335
 336         return 0;
 337 }
 338
 339 /**
 340  * iwl4965_tx_queue_free - Deallocate DMA queue.
 341  * @txq: Transmit queue to deallocate.
 342  *
 343  * Empty queue by removing and destroying all BD's.
 344  * Free all buffers.
 345  * 0-fill, but do not free "txq" descriptor structure.
 346  */
 347 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
 348 {
 349         struct iwl4965_queue *q = &txq->q;
 350         struct pci_dev *dev = priv->pci_dev;
 351         int len;
 352
 353         if (q->n_bd == 0)
 354                 return;
 355
 356         /* first, empty all BD's */
 357         for (; q->write_ptr != q->read_ptr;
 358              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 359                 iwl4965_hw_txq_free_tfd(priv, txq);
 360
 361         len = sizeof(struct iwl4965_cmd) * q->n_window;
 362         if (q->id == IWL_CMD_QUEUE_NUM)
 363                 len += IWL_MAX_SCAN_SIZE;
 364
 365         /* De-alloc array of command/tx buffers */
 366         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 367
 368         /* De-alloc circular buffer of TFDs */
 369         if (txq->q.n_bd)
 370                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 371                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 372
 373         /* De-alloc array of per-TFD driver data */
 374         if (txq->txb) {
 375                 kfree(txq->txb);
 376                 txq->txb = NULL;
 377         }
 378
 379         /* 0-fill queue descriptor structure */
 380         memset(txq, 0, sizeof(*txq));
 381 }
 382
 383 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 384
 385 /*************** STATION TABLE MANAGEMENT ****
 386  * mac80211 should be examined to determine if sta_info is duplicating
 387  * the functionality provided here
 388  */
 389
 390 /**************************************************************/
 391
 392 #if 0 /* temporary disable till we add real remove station */
 393 /**
 394  * iwl4965_remove_station - Remove driver's knowledge of station.
 395  *
 396  * NOTE:  This does not remove station from device's station table.
 397  */
 398 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 399 {
 400         int index = IWL_INVALID_STATION;
 401         int i;
 402         unsigned long flags;
 403
 404         spin_lock_irqsave(&priv->sta_lock, flags);
 405
 406         if (is_ap)
 407                 index = IWL_AP_ID;
 408         else if (is_broadcast_ether_addr(addr))
 409                 index = priv->hw_setting.bcast_sta_id;
 410         else
 411                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 412                         if (priv->stations[i].used &&
 413                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 414                                                 addr)) {
 415                                 index = i;
 416                                 break;
 417                         }
 418
 419         if (unlikely(index == IWL_INVALID_STATION))
 420                 goto out;
 421
 422         if (priv->stations[index].used) {
 423                 priv->stations[index].used = 0;
 424                 priv->num_stations--;
 425         }
 426
 427         BUG_ON(priv->num_stations < 0);
 428
 429 out:
 430         spin_unlock_irqrestore(&priv->sta_lock, flags);
 431         return 0;
 432 }
 433 #endif
 434
 435 /**
 436  * iwl4965_clear_stations_table - Clear the driver's station table
 437  *
 438  * NOTE:  This does not clear or otherwise alter the device's station table.
 439  */
 440 static void iwl4965_clear_stations_table(struct iwl_priv *priv)
 441 {
 442         unsigned long flags;
 443
 444         spin_lock_irqsave(&priv->sta_lock, flags);
 445
 446         priv->num_stations = 0;
 447         memset(priv->stations, 0, sizeof(priv->stations));
 448
 449         spin_unlock_irqrestore(&priv->sta_lock, flags);
 450 }
 451
 452 /**
 453  * iwl4965_add_station_flags - Add station to tables in driver and device
 454  */
 455 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
 456                                 int is_ap, u8 flags, void *ht_data)
 457 {
 458         int i;
 459         int index = IWL_INVALID_STATION;
 460         struct iwl4965_station_entry *station;
 461         unsigned long flags_spin;
 462         DECLARE_MAC_BUF(mac);
 463
 464         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 465         if (is_ap)
 466                 index = IWL_AP_ID;
 467         else if (is_broadcast_ether_addr(addr))
 468                 index = priv->hw_setting.bcast_sta_id;
 469         else
 470                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 471                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 472                                                 addr)) {
 473                                 index = i;
 474                                 break;
 475                         }
 476
 477                         if (!priv->stations[i].used &&
 478                             index == IWL_INVALID_STATION)
 479                                 index = i;
 480                 }
 481
 482
 483         /* These two conditions have the same outcome, but keep them separate
 484           since they have different meanings */
 485         if (unlikely(index == IWL_INVALID_STATION)) {
 486                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 487                 return index;
 488         }
 489
 490         if (priv->stations[index].used &&
 491             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 492                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 493                 return index;
 494         }
 495
 496
 497         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 498         station = &priv->stations[index];
 499         station->used = 1;
 500         priv->num_stations++;
 501
 502         /* Set up the REPLY_ADD_STA command to send to device */
 503         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 504         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 505         station->sta.mode = 0;
 506         station->sta.sta.sta_id = index;
 507         station->sta.station_flags = 0;
 508
 509 #ifdef CONFIG_IWL4965_HT
 510         /* BCAST station and IBSS stations do not work in HT mode */
 511         if (index != priv->hw_setting.bcast_sta_id &&
 512             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 513                 iwl4965_set_ht_add_station(priv, index,
 514                                  (struct ieee80211_ht_info *) ht_data);
 515 #endif /*CONFIG_IWL4965_HT*/
 516
 517         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 518
 519         /* Add station to device's station table */
 520         iwl4965_send_add_station(priv, &station->sta, flags);
 521         return index;
 522
 523 }
 524
 525 /*************** DRIVER STATUS FUNCTIONS   *****/
 526
 527 static inline int iwl4965_is_ready(struct iwl_priv *priv)
 528 {
 529         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 530          * set but EXIT_PENDING is not */
 531         return test_bit(STATUS_READY, &priv->status) &&
 532                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 533                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 534 }
 535
 536 static inline int iwl4965_is_alive(struct iwl_priv *priv)
 537 {
 538         return test_bit(STATUS_ALIVE, &priv->status);
 539 }
 540
 541 static inline int iwl4965_is_init(struct iwl_priv *priv)
 542 {
 543         return test_bit(STATUS_INIT, &priv->status);
 544 }
 545
 546 static inline int iwl4965_is_rfkill(struct iwl_priv *priv)
 547 {
 548         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 549                test_bit(STATUS_RF_KILL_SW, &priv->status);
 550 }
 551
 552 static inline int iwl4965_is_ready_rf(struct iwl_priv *priv)
 553 {
 554
 555         if (iwl4965_is_rfkill(priv))
 556                 return 0;
 557
 558         return iwl4965_is_ready(priv);
 559 }
 560
 561 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 562
 563 #define IWL_CMD(x) case x : return #x
 564
 565 static const char *get_cmd_string(u8 cmd)
 566 {
 567         switch (cmd) {
 568                 IWL_CMD(REPLY_ALIVE);
 569                 IWL_CMD(REPLY_ERROR);
 570                 IWL_CMD(REPLY_RXON);
 571                 IWL_CMD(REPLY_RXON_ASSOC);
 572                 IWL_CMD(REPLY_QOS_PARAM);
 573                 IWL_CMD(REPLY_RXON_TIMING);
 574                 IWL_CMD(REPLY_ADD_STA);
 575                 IWL_CMD(REPLY_REMOVE_STA);
 576                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 577                 IWL_CMD(REPLY_TX);
 578                 IWL_CMD(REPLY_RATE_SCALE);
 579                 IWL_CMD(REPLY_LEDS_CMD);
 580                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 581                 IWL_CMD(RADAR_NOTIFICATION);
 582                 IWL_CMD(REPLY_QUIET_CMD);
 583                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 584                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 585                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 586                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 587                 IWL_CMD(POWER_TABLE_CMD);
 588                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 589                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 590                 IWL_CMD(REPLY_SCAN_CMD);
 591                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 592                 IWL_CMD(SCAN_START_NOTIFICATION);
 593                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 594                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 595                 IWL_CMD(BEACON_NOTIFICATION);
 596                 IWL_CMD(REPLY_TX_BEACON);
 597                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 598                 IWL_CMD(QUIET_NOTIFICATION);
 599                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 600                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 601                 IWL_CMD(REPLY_BT_CONFIG);
 602                 IWL_CMD(REPLY_STATISTICS_CMD);
 603                 IWL_CMD(STATISTICS_NOTIFICATION);
 604                 IWL_CMD(REPLY_CARD_STATE_CMD);
 605                 IWL_CMD(CARD_STATE_NOTIFICATION);
 606                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 607                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
 608                 IWL_CMD(SENSITIVITY_CMD);
 609                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
 610                 IWL_CMD(REPLY_RX_PHY_CMD);
 611                 IWL_CMD(REPLY_RX_MPDU_CMD);
 612                 IWL_CMD(REPLY_4965_RX);
 613                 IWL_CMD(REPLY_COMPRESSED_BA);
 614         default:
 615                 return "UNKNOWN";
 616
 617         }
 618 }
 619
 620 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 621
 622 /**
 623  * iwl4965_enqueue_hcmd - enqueue a uCode command
 624  * @priv: device private data point
 625  * @cmd: a point to the ucode command structure
 626  *
 627  * The function returns < 0 values to indicate the operation is
 628  * failed. On success, it turns the index (> 0) of command in the
 629  * command queue.
 630  */
 631 static int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl4965_host_cmd *cmd)
 632 {
 633         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 634         struct iwl4965_queue *q = &txq->q;
 635         struct iwl4965_tfd_frame *tfd;
 636         u32 *control_flags;
 637         struct iwl4965_cmd *out_cmd;
 638         u32 idx;
 639         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 640         dma_addr_t phys_addr;
 641         int ret;
 642         unsigned long flags;
 643
 644         /* If any of the command structures end up being larger than
 645          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 646          * we will need to increase the size of the TFD entries */
 647         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 648                !(cmd->meta.flags & CMD_SIZE_HUGE));
 649
 650         if (iwl4965_is_rfkill(priv)) {
 651                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 652                 return -EIO;
 653         }
 654
 655         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 656                 IWL_ERROR("No space for Tx\n");
 657                 return -ENOSPC;
 658         }
 659
 660         spin_lock_irqsave(&priv->hcmd_lock, flags);
 661
 662         tfd = &txq->bd[q->write_ptr];
 663         memset(tfd, 0, sizeof(*tfd));
 664
 665         control_flags = (u32 *) tfd;
 666
 667         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 668         out_cmd = &txq->cmd[idx];
 669
 670         out_cmd->hdr.cmd = cmd->id;
 671         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 672         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 673
 674         /* At this point, the out_cmd now has all of the incoming cmd
 675          * information */
 676
 677         out_cmd->hdr.flags = 0;
 678         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 679                         INDEX_TO_SEQ(q->write_ptr));
 680         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 681                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 682
 683         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 684                         offsetof(struct iwl4965_cmd, hdr);
 685         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 686
 687         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 688                      "%d bytes at %d[%d]:%d\n",
 689                      get_cmd_string(out_cmd->hdr.cmd),
 690                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 691                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 692
 693         txq->need_update = 1;
 694
 695         /* Set up entry in queue's byte count circular buffer */
 696         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 697
 698         /* Increment and update queue's write index */
 699         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 700         iwl4965_tx_queue_update_write_ptr(priv, txq);
 701
 702         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 703         return ret ? ret : idx;
 704 }
 705
 706 static int iwl4965_send_cmd_async(struct iwl_priv *priv, struct iwl4965_host_cmd *cmd)
 707 {
 708         int ret;
 709
 710         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 711
 712         /* An asynchronous command can not expect an SKB to be set. */
 713         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 714
 715         /* An asynchronous command MUST have a callback. */
 716         BUG_ON(!cmd->meta.u.callback);
 717
 718         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 719                 return -EBUSY;
 720
 721         ret = iwl4965_enqueue_hcmd(priv, cmd);
 722         if (ret < 0) {
 723                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 724                           get_cmd_string(cmd->id), ret);
 725                 return ret;
 726         }
 727         return 0;
 728 }
 729
 730 static int iwl4965_send_cmd_sync(struct iwl_priv *priv, struct iwl4965_host_cmd *cmd)
 731 {
 732         int cmd_idx;
 733         int ret;
 734         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 735
 736         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 737
 738          /* A synchronous command can not have a callback set. */
 739         BUG_ON(cmd->meta.u.callback != NULL);
 740
 741         if (atomic_xchg(&entry, 1)) {
 742                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 743                           get_cmd_string(cmd->id));
 744                 return -EBUSY;
 745         }
 746
 747         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 748
 749         if (cmd->meta.flags & CMD_WANT_SKB)
 750                 cmd->meta.source = &cmd->meta;
 751
 752         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
 753         if (cmd_idx < 0) {
 754                 ret = cmd_idx;
 755                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 756                           get_cmd_string(cmd->id), ret);
 757                 goto out;
 758         }
 759
 760         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 761                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 762                         HOST_COMPLETE_TIMEOUT);
 763         if (!ret) {
 764                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 765                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 766                                   get_cmd_string(cmd->id),
 767                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 768
 769                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 770                         ret = -ETIMEDOUT;
 771                         goto cancel;
 772                 }
 773         }
 774
 775         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 776                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 777                                get_cmd_string(cmd->id));
 778                 ret = -ECANCELED;
 779                 goto fail;
 780         }
 781         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 782                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 783                                get_cmd_string(cmd->id));
 784                 ret = -EIO;
 785                 goto fail;
 786         }
 787         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 788                 IWL_ERROR("Error: Response NULL in '%s'\n",
 789                           get_cmd_string(cmd->id));
 790                 ret = -EIO;
 791                 goto out;
 792         }
 793
 794         ret = 0;
 795         goto out;
 796
 797 cancel:
 798         if (cmd->meta.flags & CMD_WANT_SKB) {
 799                 struct iwl4965_cmd *qcmd;
 800
 801                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 802                  * TX cmd queue. Otherwise in case the cmd comes
 803                  * in later, it will possibly set an invalid
 804                  * address (cmd->meta.source). */
 805                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 806                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 807         }
 808 fail:
 809         if (cmd->meta.u.skb) {
 810                 dev_kfree_skb_any(cmd->meta.u.skb);
 811                 cmd->meta.u.skb = NULL;
 812         }
 813 out:
 814         atomic_set(&entry, 0);
 815         return ret;
 816 }
 817
 818 int iwl4965_send_cmd(struct iwl_priv *priv, struct iwl4965_host_cmd *cmd)
 819 {
 820         if (cmd->meta.flags & CMD_ASYNC)
 821                 return iwl4965_send_cmd_async(priv, cmd);
 822
 823         return iwl4965_send_cmd_sync(priv, cmd);
 824 }
 825
 826 int iwl4965_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
 827 {
 828         struct iwl4965_host_cmd cmd = {
 829                 .id = id,
 830                 .len = len,
 831                 .data = data,
 832         };
 833
 834         return iwl4965_send_cmd_sync(priv, &cmd);
 835 }
 836
 837 static int __must_check iwl4965_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
 838 {
 839         struct iwl4965_host_cmd cmd = {
 840                 .id = id,
 841                 .len = sizeof(val),
 842                 .data = &val,
 843         };
 844
 845         return iwl4965_send_cmd_sync(priv, &cmd);
 846 }
 847
 848 int iwl4965_send_statistics_request(struct iwl_priv *priv)
 849 {
 850         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 851 }
 852
 853 /**
 854  * iwl4965_rxon_add_station - add station into station table.
 855  *
 856  * there is only one AP station with id= IWL_AP_ID
 857  * NOTE: mutex must be held before calling this fnction
 858  */
 859 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
 860                                 const u8 *addr, int is_ap)
 861 {
 862         u8 sta_id;
 863
 864         /* Add station to device's station table */
 865 #ifdef CONFIG_IWL4965_HT
 866         struct ieee80211_conf *conf = &priv->hw->conf;
 867         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 868
 869         if ((is_ap) &&
 870             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 871             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 872                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 873                                                    0, cur_ht_config);
 874         else
 875 #endif /* CONFIG_IWL4965_HT */
 876                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 877                                                    0, NULL);
 878
 879         /* Set up default rate scaling table in device's station table */
 880         iwl4965_add_station(priv, addr, is_ap);
 881
 882         return sta_id;
 883 }
 884
 885 /**
 886  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
 887  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 888  * @channel: Any channel valid for the requested phymode
 889
 890  * In addition to setting the staging RXON, priv->phymode is also set.
 891  *
 892  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 893  * in the staging RXON flag structure based on the phymode
 894  */
 895 static int iwl4965_set_rxon_channel(struct iwl_priv *priv,
 896                                     enum ieee80211_band band,
 897                                  u16 channel)
 898 {
 899         if (!iwl4965_get_channel_info(priv, band, channel)) {
 900                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 901                                channel, band);
 902                 return -EINVAL;
 903         }
 904
 905         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 906             (priv->band == band))
 907                 return 0;
 908
 909         priv->staging_rxon.channel = cpu_to_le16(channel);
 910         if (band == IEEE80211_BAND_5GHZ)
 911                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 912         else
 913                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 914
 915         priv->band = band;
 916
 917         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 918
 919         return 0;
 920 }
 921
 922 /**
 923  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 924  *
 925  * NOTE:  This is really only useful during development and can eventually
 926  * be #ifdef'd out once the driver is stable and folks aren't actively
 927  * making changes
 928  */
 929 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 930 {
 931         int error = 0;
 932         int counter = 1;
 933
 934         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 935                 error |= le32_to_cpu(rxon->flags &
 936                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 937                                  RXON_FLG_RADAR_DETECT_MSK));
 938                 if (error)
 939                         IWL_WARNING("check 24G fields %d | %d\n",
 940                                     counter++, error);
 941         } else {
 942                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 943                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 944                 if (error)
 945                         IWL_WARNING("check 52 fields %d | %d\n",
 946                                     counter++, error);
 947                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 948                 if (error)
 949                         IWL_WARNING("check 52 CCK %d | %d\n",
 950                                     counter++, error);
 951         }
 952         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 953         if (error)
 954                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 955
 956         /* make sure basic rates 6Mbps and 1Mbps are supported */
 957         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 958                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 959         if (error)
 960                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 961
 962         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 963         if (error)
 964                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 965
 966         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 967                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 968         if (error)
 969                 IWL_WARNING("check CCK and short slot %d | %d\n",
 970                             counter++, error);
 971
 972         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 973                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 974         if (error)
 975                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 976                             counter++, error);
 977
 978         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 979                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 980         if (error)
 981                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 982                             counter++, error);
 983
 984         if (error)
 985                 IWL_WARNING("Tuning to channel %d\n",
 986                             le16_to_cpu(rxon->channel));
 987
 988         if (error) {
 989                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 990                 return -1;
 991         }
 992         return 0;
 993 }
 994
 995 /**
 996  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 997  * @priv: staging_rxon is compared to active_rxon
 998  *
 999  * If the RXON structure is changing enough to require a new tune,
1000  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1001  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1002  */
1003 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
1004 {
1005
1006         /* These items are only settable from the full RXON command */
1007         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1008             compare_ether_addr(priv->staging_rxon.bssid_addr,
1009                                priv->active_rxon.bssid_addr) ||
1010             compare_ether_addr(priv->staging_rxon.node_addr,
1011                                priv->active_rxon.node_addr) ||
1012             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1013                                priv->active_rxon.wlap_bssid_addr) ||
1014             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1015             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1016             (priv->staging_rxon.air_propagation !=
1017              priv->active_rxon.air_propagation) ||
1018             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1019              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1020             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1021              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1022             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1023             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1024                 return 1;
1025
1026         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1027          * be updated with the RXON_ASSOC command -- however only some
1028          * flag transitions are allowed using RXON_ASSOC */
1029
1030         /* Check if we are not switching bands */
1031         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1032             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1033                 return 1;
1034
1035         /* Check if we are switching association toggle */
1036         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1037                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1038                 return 1;
1039
1040         return 0;
1041 }
1042
1043 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
1044 {
1045         int rc = 0;
1046         struct iwl4965_rx_packet *res = NULL;
1047         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1048         struct iwl4965_host_cmd cmd = {
1049                 .id = REPLY_RXON_ASSOC,
1050                 .len = sizeof(rxon_assoc),
1051                 .meta.flags = CMD_WANT_SKB,
1052                 .data = &rxon_assoc,
1053         };
1054         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1055         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1056
1057         if ((rxon1->flags == rxon2->flags) &&
1058             (rxon1->filter_flags == rxon2->filter_flags) &&
1059             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1060             (rxon1->ofdm_ht_single_stream_basic_rates ==
1061              rxon2->ofdm_ht_single_stream_basic_rates) &&
1062             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1063              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1064             (rxon1->rx_chain == rxon2->rx_chain) &&
1065             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1066                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1067                 return 0;
1068         }
1069
1070         rxon_assoc.flags = priv->staging_rxon.flags;
1071         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1072         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1073         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1074         rxon_assoc.reserved = 0;
1075         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1076             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1077         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1078             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1079         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1080
1081         rc = iwl4965_send_cmd_sync(priv, &cmd);
1082         if (rc)
1083                 return rc;
1084
1085         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1086         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1087                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1088                 rc = -EIO;
1089         }
1090
1091         priv->alloc_rxb_skb--;
1092         dev_kfree_skb_any(cmd.meta.u.skb);
1093
1094         return rc;
1095 }
1096
1097 /**
1098  * iwl4965_commit_rxon - commit staging_rxon to hardware
1099  *
1100  * The RXON command in staging_rxon is committed to the hardware and
1101  * the active_rxon structure is updated with the new data.  This
1102  * function correctly transitions out of the RXON_ASSOC_MSK state if
1103  * a HW tune is required based on the RXON structure changes.
1104  */
1105 static int iwl4965_commit_rxon(struct iwl_priv *priv)
1106 {
1107         /* cast away the const for active_rxon in this function */
1108         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1109         DECLARE_MAC_BUF(mac);
1110         int rc = 0;
1111
1112         if (!iwl4965_is_alive(priv))
1113                 return -1;
1114
1115         /* always get timestamp with Rx frame */
1116         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1117
1118         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1119         if (rc) {
1120                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1121                 return -EINVAL;
1122         }
1123
1124         /* If we don't need to send a full RXON, we can use
1125          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1126          * and other flags for the current radio configuration. */
1127         if (!iwl4965_full_rxon_required(priv)) {
1128                 rc = iwl4965_send_rxon_assoc(priv);
1129                 if (rc) {
1130                         IWL_ERROR("Error setting RXON_ASSOC "
1131                                   "configuration (%d).\n", rc);
1132                         return rc;
1133                 }
1134
1135                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1136
1137                 return 0;
1138         }
1139
1140         /* station table will be cleared */
1141         priv->assoc_station_added = 0;
1142
1143 #ifdef CONFIG_IWL4965_SENSITIVITY
1144         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1145         if (!priv->error_recovering)
1146                 priv->start_calib = 0;
1147
1148         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1149 #endif /* CONFIG_IWL4965_SENSITIVITY */
1150
1151         /* If we are currently associated and the new config requires
1152          * an RXON_ASSOC and the new config wants the associated mask enabled,
1153          * we must clear the associated from the active configuration
1154          * before we apply the new config */
1155         if (iwl4965_is_associated(priv) &&
1156             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1157                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1158                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1159
1160                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1161                                       sizeof(struct iwl4965_rxon_cmd),
1162                                       &priv->active_rxon);
1163
1164                 /* If the mask clearing failed then we set
1165                  * active_rxon back to what it was previously */
1166                 if (rc) {
1167                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1168                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1169                                   "configuration (%d).\n", rc);
1170                         return rc;
1171                 }
1172         }
1173
1174         IWL_DEBUG_INFO("Sending RXON\n"
1175                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1176                        "* channel = %d\n"
1177                        "* bssid = %s\n",
1178                        ((priv->staging_rxon.filter_flags &
1179                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1180                        le16_to_cpu(priv->staging_rxon.channel),
1181                        print_mac(mac, priv->staging_rxon.bssid_addr));
1182
1183         /* Apply the new configuration */
1184         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1185                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1186         if (rc) {
1187                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1188                 return rc;
1189         }
1190
1191         iwl4965_clear_stations_table(priv);
1192
1193 #ifdef CONFIG_IWL4965_SENSITIVITY
1194         if (!priv->error_recovering)
1195                 priv->start_calib = 0;
1196
1197         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1198         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1199 #endif /* CONFIG_IWL4965_SENSITIVITY */
1200
1201         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1202
1203         /* If we issue a new RXON command which required a tune then we must
1204          * send a new TXPOWER command or we won't be able to Tx any frames */
1205         rc = iwl4965_hw_reg_send_txpower(priv);
1206         if (rc) {
1207                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1208                 return rc;
1209         }
1210
1211         /* Add the broadcast address so we can send broadcast frames */
1212         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1213             IWL_INVALID_STATION) {
1214                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1215                 return -EIO;
1216         }
1217
1218         /* If we have set the ASSOC_MSK and we are in BSS mode then
1219          * add the IWL_AP_ID to the station rate table */
1220         if (iwl4965_is_associated(priv) &&
1221             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1222                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1223                     == IWL_INVALID_STATION) {
1224                         IWL_ERROR("Error adding AP address for transmit.\n");
1225                         return -EIO;
1226                 }
1227                 priv->assoc_station_added = 1;
1228         }
1229
1230         return 0;
1231 }
1232
1233 static int iwl4965_send_bt_config(struct iwl_priv *priv)
1234 {
1235         struct iwl4965_bt_cmd bt_cmd = {
1236                 .flags = 3,
1237                 .lead_time = 0xAA,
1238                 .max_kill = 1,
1239                 .kill_ack_mask = 0,
1240                 .kill_cts_mask = 0,
1241         };
1242
1243         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1244                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1245 }
1246
1247 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
1248 {
1249         int rc = 0;
1250         struct iwl4965_rx_packet *res;
1251         struct iwl4965_host_cmd cmd = {
1252                 .id = REPLY_SCAN_ABORT_CMD,
1253                 .meta.flags = CMD_WANT_SKB,
1254         };
1255
1256         /* If there isn't a scan actively going on in the hardware
1257          * then we are in between scan bands and not actually
1258          * actively scanning, so don't send the abort command */
1259         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1260                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1261                 return 0;
1262         }
1263
1264         rc = iwl4965_send_cmd_sync(priv, &cmd);
1265         if (rc) {
1266                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1267                 return rc;
1268         }
1269
1270         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1271         if (res->u.status != CAN_ABORT_STATUS) {
1272                 /* The scan abort will return 1 for success or
1273                  * 2 for "failure".  A failure condition can be
1274                  * due to simply not being in an active scan which
1275                  * can occur if we send the scan abort before we
1276                  * the microcode has notified us that a scan is
1277                  * completed. */
1278                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1279                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1280                 clear_bit(STATUS_SCAN_HW, &priv->status);
1281         }
1282
1283         dev_kfree_skb_any(cmd.meta.u.skb);
1284
1285         return rc;
1286 }
1287
1288 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
1289                                         struct iwl4965_cmd *cmd,
1290                                         struct sk_buff *skb)
1291 {
1292         return 1;
1293 }
1294
1295 /*
1296  * CARD_STATE_CMD
1297  *
1298  * Use: Sets the device's internal card state to enable, disable, or halt
1299  *
1300  * When in the 'enable' state the card operates as normal.
1301  * When in the 'disable' state, the card enters into a low power mode.
1302  * When in the 'halt' state, the card is shut down and must be fully
1303  * restarted to come back on.
1304  */
1305 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1306 {
1307         struct iwl4965_host_cmd cmd = {
1308                 .id = REPLY_CARD_STATE_CMD,
1309                 .len = sizeof(u32),
1310                 .data = &flags,
1311                 .meta.flags = meta_flag,
1312         };
1313
1314         if (meta_flag & CMD_ASYNC)
1315                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1316
1317         return iwl4965_send_cmd(priv, &cmd);
1318 }
1319
1320 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
1321                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1322 {
1323         struct iwl4965_rx_packet *res = NULL;
1324
1325         if (!skb) {
1326                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1327                 return 1;
1328         }
1329
1330         res = (struct iwl4965_rx_packet *)skb->data;
1331         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1332                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1333                           res->hdr.flags);
1334                 return 1;
1335         }
1336
1337         switch (res->u.add_sta.status) {
1338         case ADD_STA_SUCCESS_MSK:
1339                 break;
1340         default:
1341                 break;
1342         }
1343
1344         /* We didn't cache the SKB; let the caller free it */
1345         return 1;
1346 }
1347
1348 int iwl4965_send_add_station(struct iwl_priv *priv,
1349                          struct iwl4965_addsta_cmd *sta, u8 flags)
1350 {
1351         struct iwl4965_rx_packet *res = NULL;
1352         int rc = 0;
1353         struct iwl4965_host_cmd cmd = {
1354                 .id = REPLY_ADD_STA,
1355                 .len = sizeof(struct iwl4965_addsta_cmd),
1356                 .meta.flags = flags,
1357                 .data = sta,
1358         };
1359
1360         if (flags & CMD_ASYNC)
1361                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1362         else
1363                 cmd.meta.flags |= CMD_WANT_SKB;
1364
1365         rc = iwl4965_send_cmd(priv, &cmd);
1366
1367         if (rc || (flags & CMD_ASYNC))
1368                 return rc;
1369
1370         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1371         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1372                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1373                           res->hdr.flags);
1374                 rc = -EIO;
1375         }
1376
1377         if (rc == 0) {
1378                 switch (res->u.add_sta.status) {
1379                 case ADD_STA_SUCCESS_MSK:
1380                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1381                         break;
1382                 default:
1383                         rc = -EIO;
1384                         IWL_WARNING("REPLY_ADD_STA failed\n");
1385                         break;
1386                 }
1387         }
1388
1389         priv->alloc_rxb_skb--;
1390         dev_kfree_skb_any(cmd.meta.u.skb);
1391
1392         return rc;
1393 }
1394
1395 static int iwl4965_update_sta_key_info(struct iwl_priv *priv,
1396                                    struct ieee80211_key_conf *keyconf,
1397                                    u8 sta_id)
1398 {
1399         unsigned long flags;
1400         __le16 key_flags = 0;
1401
1402         switch (keyconf->alg) {
1403         case ALG_CCMP:
1404                 key_flags |= STA_KEY_FLG_CCMP;
1405                 key_flags |= cpu_to_le16(
1406                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1407                 key_flags &= ~STA_KEY_FLG_INVALID;
1408                 break;
1409         case ALG_TKIP:
1410         case ALG_WEP:
1411         default:
1412                 return -EINVAL;
1413         }
1414         spin_lock_irqsave(&priv->sta_lock, flags);
1415         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1416         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1417         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1418                keyconf->keylen);
1419
1420         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1421                keyconf->keylen);
1422         priv->stations[sta_id].sta.key.key_flags = key_flags;
1423         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1424         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1425
1426         spin_unlock_irqrestore(&priv->sta_lock, flags);
1427
1428         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1429         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1430         return 0;
1431 }
1432
1433 static int iwl4965_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1434 {
1435         unsigned long flags;
1436
1437         spin_lock_irqsave(&priv->sta_lock, flags);
1438         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1439         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1440         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1441         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1442         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1443         spin_unlock_irqrestore(&priv->sta_lock, flags);
1444
1445         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1446         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1447         return 0;
1448 }
1449
1450 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1451 {
1452         struct list_head *element;
1453
1454         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1455                        priv->frames_count);
1456
1457         while (!list_empty(&priv->free_frames)) {
1458                 element = priv->free_frames.next;
1459                 list_del(element);
1460                 kfree(list_entry(element, struct iwl4965_frame, list));
1461                 priv->frames_count--;
1462         }
1463
1464         if (priv->frames_count) {
1465                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1466                             priv->frames_count);
1467                 priv->frames_count = 0;
1468         }
1469 }
1470
1471 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1472 {
1473         struct iwl4965_frame *frame;
1474         struct list_head *element;
1475         if (list_empty(&priv->free_frames)) {
1476                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1477                 if (!frame) {
1478                         IWL_ERROR("Could not allocate frame!\n");
1479                         return NULL;
1480                 }
1481
1482                 priv->frames_count++;
1483                 return frame;
1484         }
1485
1486         element = priv->free_frames.next;
1487         list_del(element);
1488         return list_entry(element, struct iwl4965_frame, list);
1489 }
1490
1491 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1492 {
1493         memset(frame, 0, sizeof(*frame));
1494         list_add(&frame->list, &priv->free_frames);
1495 }
1496
1497 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1498                                 struct ieee80211_hdr *hdr,
1499                                 const u8 *dest, int left)
1500 {
1501
1502         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1503             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1504              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1505                 return 0;
1506
1507         if (priv->ibss_beacon->len > left)
1508                 return 0;
1509
1510         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1511
1512         return priv->ibss_beacon->len;
1513 }
1514
1515 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1516 {
1517         u8 i;
1518
1519         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1520              i = iwl4965_rates[i].next_ieee) {
1521                 if (rate_mask & (1 << i))
1522                         return iwl4965_rates[i].plcp;
1523         }
1524
1525         return IWL_RATE_INVALID;
1526 }
1527
1528 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1529 {
1530         struct iwl4965_frame *frame;
1531         unsigned int frame_size;
1532         int rc;
1533         u8 rate;
1534
1535         frame = iwl4965_get_free_frame(priv);
1536
1537         if (!frame) {
1538                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1539                           "command.\n");
1540                 return -ENOMEM;
1541         }
1542
1543         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1544                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1545                                                 0xFF0);
1546                 if (rate == IWL_INVALID_RATE)
1547                         rate = IWL_RATE_6M_PLCP;
1548         } else {
1549                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1550                 if (rate == IWL_INVALID_RATE)
1551                         rate = IWL_RATE_1M_PLCP;
1552         }
1553
1554         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1555
1556         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1557                               &frame->u.cmd[0]);
1558
1559         iwl4965_free_frame(priv, frame);
1560
1561         return rc;
1562 }
1563
1564 /******************************************************************************
1565  *
1566  * Misc. internal state and helper functions
1567  *
1568  ******************************************************************************/
1569
1570 static void iwl4965_unset_hw_setting(struct iwl_priv *priv)
1571 {
1572         if (priv->hw_setting.shared_virt)
1573                 pci_free_consistent(priv->pci_dev,
1574                                     sizeof(struct iwl4965_shared),
1575                                     priv->hw_setting.shared_virt,
1576                                     priv->hw_setting.shared_phys);
1577 }
1578
1579 /**
1580  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1581  *
1582  * return : set the bit for each supported rate insert in ie
1583  */
1584 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1585                                     u16 basic_rate, int *left)
1586 {
1587         u16 ret_rates = 0, bit;
1588         int i;
1589         u8 *cnt = ie;
1590         u8 *rates = ie + 1;
1591
1592         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1593                 if (bit & supported_rate) {
1594                         ret_rates |= bit;
1595                         rates[*cnt] = iwl4965_rates[i].ieee |
1596                                 ((bit & basic_rate) ? 0x80 : 0x00);
1597                         (*cnt)++;
1598                         (*left)--;
1599                         if ((*left <= 0) ||
1600                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1601                                 break;
1602                 }
1603         }
1604
1605         return ret_rates;
1606 }
1607
1608 /**
1609  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1610  */
1611 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1612                                   enum ieee80211_band band,
1613                                   struct ieee80211_mgmt *frame,
1614                                   int left, int is_direct)
1615 {
1616         int len = 0;
1617         u8 *pos = NULL;
1618         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1619 #ifdef CONFIG_IWL4965_HT
1620         const struct ieee80211_supported_band *sband =
1621                                                 iwl4965_get_hw_mode(priv, band);
1622 #endif /* CONFIG_IWL4965_HT */
1623
1624         /* Make sure there is enough space for the probe request,
1625          * two mandatory IEs and the data */
1626         left -= 24;
1627         if (left < 0)
1628                 return 0;
1629         len += 24;
1630
1631         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1632         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1633         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1634         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1635         frame->seq_ctrl = 0;
1636
1637         /* fill in our indirect SSID IE */
1638         /* ...next IE... */
1639
1640         left -= 2;
1641         if (left < 0)
1642                 return 0;
1643         len += 2;
1644         pos = &(frame->u.probe_req.variable[0]);
1645         *pos++ = WLAN_EID_SSID;
1646         *pos++ = 0;
1647
1648         /* fill in our direct SSID IE... */
1649         if (is_direct) {
1650                 /* ...next IE... */
1651                 left -= 2 + priv->essid_len;
1652                 if (left < 0)
1653                         return 0;
1654                 /* ... fill it in... */
1655                 *pos++ = WLAN_EID_SSID;
1656                 *pos++ = priv->essid_len;
1657                 memcpy(pos, priv->essid, priv->essid_len);
1658                 pos += priv->essid_len;
1659                 len += 2 + priv->essid_len;
1660         }
1661
1662         /* fill in supported rate */
1663         /* ...next IE... */
1664         left -= 2;
1665         if (left < 0)
1666                 return 0;
1667
1668         /* ... fill it in... */
1669         *pos++ = WLAN_EID_SUPP_RATES;
1670         *pos = 0;
1671
1672         /* exclude 60M rate */
1673         active_rates = priv->rates_mask;
1674         active_rates &= ~IWL_RATE_60M_MASK;
1675
1676         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1677
1678         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1679         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1680                         active_rate_basic, &left);
1681         active_rates &= ~ret_rates;
1682
1683         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1684                                  active_rate_basic, &left);
1685         active_rates &= ~ret_rates;
1686
1687         len += 2 + *pos;
1688         pos += (*pos) + 1;
1689         if (active_rates == 0)
1690                 goto fill_end;
1691
1692         /* fill in supported extended rate */
1693         /* ...next IE... */
1694         left -= 2;
1695         if (left < 0)
1696                 return 0;
1697         /* ... fill it in... */
1698         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1699         *pos = 0;
1700         iwl4965_supported_rate_to_ie(pos, active_rates,
1701                                  active_rate_basic, &left);
1702         if (*pos > 0)
1703                 len += 2 + *pos;
1704
1705 #ifdef CONFIG_IWL4965_HT
1706         if (sband && sband->ht_info.ht_supported) {
1707                 struct ieee80211_ht_cap *ht_cap;
1708                 pos += (*pos) + 1;
1709                 *pos++ = WLAN_EID_HT_CAPABILITY;
1710                 *pos++ = sizeof(struct ieee80211_ht_cap);
1711                 ht_cap = (struct ieee80211_ht_cap *)pos;
1712                 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1713                 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1714                 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1715                                             IEEE80211_HT_CAP_AMPDU_FACTOR) |
1716                                             ((sband->ht_info.ampdu_density << 2) &
1717                                             IEEE80211_HT_CAP_AMPDU_DENSITY);
1718                 len += 2 + sizeof(struct ieee80211_ht_cap);
1719         }
1720 #endif  /*CONFIG_IWL4965_HT */
1721
1722  fill_end:
1723         return (u16)len;
1724 }
1725
1726 /*
1727  * QoS  support
1728 */
1729 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1730                                        struct iwl4965_qosparam_cmd *qos)
1731 {
1732
1733         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1734                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1735 }
1736
1737 static void iwl4965_reset_qos(struct iwl_priv *priv)
1738 {
1739         u16 cw_min = 15;
1740         u16 cw_max = 1023;
1741         u8 aifs = 2;
1742         u8 is_legacy = 0;
1743         unsigned long flags;
1744         int i;
1745
1746         spin_lock_irqsave(&priv->lock, flags);
1747         priv->qos_data.qos_active = 0;
1748
1749         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1750                 if (priv->qos_data.qos_enable)
1751                         priv->qos_data.qos_active = 1;
1752                 if (!(priv->active_rate & 0xfff0)) {
1753                         cw_min = 31;
1754                         is_legacy = 1;
1755                 }
1756         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1757                 if (priv->qos_data.qos_enable)
1758                         priv->qos_data.qos_active = 1;
1759         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1760                 cw_min = 31;
1761                 is_legacy = 1;
1762         }
1763
1764         if (priv->qos_data.qos_active)
1765                 aifs = 3;
1766
1767         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1768         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1769         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1770         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1771         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1772
1773         if (priv->qos_data.qos_active) {
1774                 i = 1;
1775                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1776                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1777                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1778                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1779                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1780
1781                 i = 2;
1782                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1783                         cpu_to_le16((cw_min + 1) / 2 - 1);
1784                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1785                         cpu_to_le16(cw_max);
1786                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1787                 if (is_legacy)
1788                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1789                                 cpu_to_le16(6016);
1790                 else
1791                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1792                                 cpu_to_le16(3008);
1793                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1794
1795                 i = 3;
1796                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1797                         cpu_to_le16((cw_min + 1) / 4 - 1);
1798                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1799                         cpu_to_le16((cw_max + 1) / 2 - 1);
1800                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1801                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1802                 if (is_legacy)
1803                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1804                                 cpu_to_le16(3264);
1805                 else
1806                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1807                                 cpu_to_le16(1504);
1808         } else {
1809                 for (i = 1; i < 4; i++) {
1810                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1811                                 cpu_to_le16(cw_min);
1812                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1813                                 cpu_to_le16(cw_max);
1814                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1815                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1816                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1817                 }
1818         }
1819         IWL_DEBUG_QOS("set QoS to default \n");
1820
1821         spin_unlock_irqrestore(&priv->lock, flags);
1822 }
1823
1824 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1825 {
1826         unsigned long flags;
1827
1828         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1829                 return;
1830
1831         if (!priv->qos_data.qos_enable)
1832                 return;
1833
1834         spin_lock_irqsave(&priv->lock, flags);
1835         priv->qos_data.def_qos_parm.qos_flags = 0;
1836
1837         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1838             !priv->qos_data.qos_cap.q_AP.txop_request)
1839                 priv->qos_data.def_qos_parm.qos_flags |=
1840                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1841         if (priv->qos_data.qos_active)
1842                 priv->qos_data.def_qos_parm.qos_flags |=
1843                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1844
1845 #ifdef CONFIG_IWL4965_HT
1846         if (priv->current_ht_config.is_ht)
1847                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1848 #endif /* CONFIG_IWL4965_HT */
1849
1850         spin_unlock_irqrestore(&priv->lock, flags);
1851
1852         if (force || iwl4965_is_associated(priv)) {
1853                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1854                                 priv->qos_data.qos_active,
1855                                 priv->qos_data.def_qos_parm.qos_flags);
1856
1857                 iwl4965_send_qos_params_command(priv,
1858                                 &(priv->qos_data.def_qos_parm));
1859         }
1860 }
1861
1862 /*
1863  * Power management (not Tx power!) functions
1864  */
1865 #define MSEC_TO_USEC 1024
1866
1867 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1868 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1869 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1870 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1871                                      __constant_cpu_to_le32(X1), \
1872                                      __constant_cpu_to_le32(X2), \
1873                                      __constant_cpu_to_le32(X3), \
1874                                      __constant_cpu_to_le32(X4)}
1875
1876
1877 /* default power management (not Tx power) table values */
1878 /* for tim  0-10 */
1879 static struct iwl4965_power_vec_entry range_0[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), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1882         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1883         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1884         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1885         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1886 };
1887
1888 /* for tim > 10 */
1889 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1890         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1891         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1892                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1893         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1894                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1895         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1896                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1897         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1898         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1899                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1900 };
1901
1902 int iwl4965_power_init_handle(struct iwl_priv *priv)
1903 {
1904         int rc = 0, i;
1905         struct iwl4965_power_mgr *pow_data;
1906         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
1907         u16 pci_pm;
1908
1909         IWL_DEBUG_POWER("Initialize power \n");
1910
1911         pow_data = &(priv->power_data);
1912
1913         memset(pow_data, 0, sizeof(*pow_data));
1914
1915         pow_data->active_index = IWL_POWER_RANGE_0;
1916         pow_data->dtim_val = 0xffff;
1917
1918         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1919         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1920
1921         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1922         if (rc != 0)
1923                 return 0;
1924         else {
1925                 struct iwl4965_powertable_cmd *cmd;
1926
1927                 IWL_DEBUG_POWER("adjust power command flags\n");
1928
1929                 for (i = 0; i < IWL_POWER_AC; i++) {
1930                         cmd = &pow_data->pwr_range_0[i].cmd;
1931
1932                         if (pci_pm & 0x1)
1933                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1934                         else
1935                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1936                 }
1937         }
1938         return rc;
1939 }
1940
1941 static int iwl4965_update_power_cmd(struct iwl_priv *priv,
1942                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
1943 {
1944         int rc = 0, i;
1945         u8 skip;
1946         u32 max_sleep = 0;
1947         struct iwl4965_power_vec_entry *range;
1948         u8 period = 0;
1949         struct iwl4965_power_mgr *pow_data;
1950
1951         if (mode > IWL_POWER_INDEX_5) {
1952                 IWL_DEBUG_POWER("Error invalid power mode \n");
1953                 return -1;
1954         }
1955         pow_data = &(priv->power_data);
1956
1957         if (pow_data->active_index == IWL_POWER_RANGE_0)
1958                 range = &pow_data->pwr_range_0[0];
1959         else
1960                 range = &pow_data->pwr_range_1[1];
1961
1962         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
1963
1964 #ifdef IWL_MAC80211_DISABLE
1965         if (priv->assoc_network != NULL) {
1966                 unsigned long flags;
1967
1968                 period = priv->assoc_network->tim.tim_period;
1969         }
1970 #endif  /*IWL_MAC80211_DISABLE */
1971         skip = range[mode].no_dtim;
1972
1973         if (period == 0) {
1974                 period = 1;
1975                 skip = 0;
1976         }
1977
1978         if (skip == 0) {
1979                 max_sleep = period;
1980                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1981         } else {
1982                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1983                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1984                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1985         }
1986
1987         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1988                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1989                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1990         }
1991
1992         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1993         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1994         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1995         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1996                         le32_to_cpu(cmd->sleep_interval[0]),
1997                         le32_to_cpu(cmd->sleep_interval[1]),
1998                         le32_to_cpu(cmd->sleep_interval[2]),
1999                         le32_to_cpu(cmd->sleep_interval[3]),
2000                         le32_to_cpu(cmd->sleep_interval[4]));
2001
2002         return rc;
2003 }
2004
2005 static int iwl4965_send_power_mode(struct iwl_priv *priv, u32 mode)
2006 {
2007         u32 uninitialized_var(final_mode);
2008         int rc;
2009         struct iwl4965_powertable_cmd cmd;
2010
2011         /* If on battery, set to 3,
2012          * if plugged into AC power, set to CAM ("continuously aware mode"),
2013          * else user level */
2014         switch (mode) {
2015         case IWL_POWER_BATTERY:
2016                 final_mode = IWL_POWER_INDEX_3;
2017                 break;
2018         case IWL_POWER_AC:
2019                 final_mode = IWL_POWER_MODE_CAM;
2020                 break;
2021         default:
2022                 final_mode = mode;
2023                 break;
2024         }
2025
2026         cmd.keep_alive_beacons = 0;
2027
2028         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2029
2030         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2031
2032         if (final_mode == IWL_POWER_MODE_CAM)
2033                 clear_bit(STATUS_POWER_PMI, &priv->status);
2034         else
2035                 set_bit(STATUS_POWER_PMI, &priv->status);
2036
2037         return rc;
2038 }
2039
2040 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2041 {
2042         /* Filter incoming packets to determine if they are targeted toward
2043          * this network, discarding packets coming from ourselves */
2044         switch (priv->iw_mode) {
2045         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2046                 /* packets from our adapter are dropped (echo) */
2047                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2048                         return 0;
2049                 /* {broad,multi}cast packets to our IBSS go through */
2050                 if (is_multicast_ether_addr(header->addr1))
2051                         return !compare_ether_addr(header->addr3, priv->bssid);
2052                 /* packets to our adapter go through */
2053                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2054         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2055                 /* packets from our adapter are dropped (echo) */
2056                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2057                         return 0;
2058                 /* {broad,multi}cast packets to our BSS go through */
2059                 if (is_multicast_ether_addr(header->addr1))
2060                         return !compare_ether_addr(header->addr2, priv->bssid);
2061                 /* packets to our adapter go through */
2062                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2063         }
2064
2065         return 1;
2066 }
2067
2068 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2069
2070 static const char *iwl4965_get_tx_fail_reason(u32 status)
2071 {
2072         switch (status & TX_STATUS_MSK) {
2073         case TX_STATUS_SUCCESS:
2074                 return "SUCCESS";
2075                 TX_STATUS_ENTRY(SHORT_LIMIT);
2076                 TX_STATUS_ENTRY(LONG_LIMIT);
2077                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2078                 TX_STATUS_ENTRY(MGMNT_ABORT);
2079                 TX_STATUS_ENTRY(NEXT_FRAG);
2080                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2081                 TX_STATUS_ENTRY(DEST_PS);
2082                 TX_STATUS_ENTRY(ABORTED);
2083                 TX_STATUS_ENTRY(BT_RETRY);
2084                 TX_STATUS_ENTRY(STA_INVALID);
2085                 TX_STATUS_ENTRY(FRAG_DROPPED);
2086                 TX_STATUS_ENTRY(TID_DISABLE);
2087                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2088                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2089                 TX_STATUS_ENTRY(TX_LOCKED);
2090                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2091         }
2092
2093         return "UNKNOWN";
2094 }
2095
2096 /**
2097  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2098  *
2099  * NOTE: priv->mutex is not required before calling this function
2100  */
2101 static int iwl4965_scan_cancel(struct iwl_priv *priv)
2102 {
2103         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2104                 clear_bit(STATUS_SCANNING, &priv->status);
2105                 return 0;
2106         }
2107
2108         if (test_bit(STATUS_SCANNING, &priv->status)) {
2109                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2110                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2111                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2112                         queue_work(priv->workqueue, &priv->abort_scan);
2113
2114                 } else
2115                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2116
2117                 return test_bit(STATUS_SCANNING, &priv->status);
2118         }
2119
2120         return 0;
2121 }
2122
2123 /**
2124  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2125  * @ms: amount of time to wait (in milliseconds) for scan to abort
2126  *
2127  * NOTE: priv->mutex must be held before calling this function
2128  */
2129 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
2130 {
2131         unsigned long now = jiffies;
2132         int ret;
2133
2134         ret = iwl4965_scan_cancel(priv);
2135         if (ret && ms) {
2136                 mutex_unlock(&priv->mutex);
2137                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2138                                 test_bit(STATUS_SCANNING, &priv->status))
2139                         msleep(1);
2140                 mutex_lock(&priv->mutex);
2141
2142                 return test_bit(STATUS_SCANNING, &priv->status);
2143         }
2144
2145         return ret;
2146 }
2147
2148 static void iwl4965_sequence_reset(struct iwl_priv *priv)
2149 {
2150         /* Reset ieee stats */
2151
2152         /* We don't reset the net_device_stats (ieee->stats) on
2153          * re-association */
2154
2155         priv->last_seq_num = -1;
2156         priv->last_frag_num = -1;
2157         priv->last_packet_time = 0;
2158
2159         iwl4965_scan_cancel(priv);
2160 }
2161
2162 #define MAX_UCODE_BEACON_INTERVAL       4096
2163 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2164
2165 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2166 {
2167         u16 new_val = 0;
2168         u16 beacon_factor = 0;
2169
2170         beacon_factor =
2171             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2172                 / MAX_UCODE_BEACON_INTERVAL;
2173         new_val = beacon_val / beacon_factor;
2174
2175         return cpu_to_le16(new_val);
2176 }
2177
2178 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
2179 {
2180         u64 interval_tm_unit;
2181         u64 tsf, result;
2182         unsigned long flags;
2183         struct ieee80211_conf *conf = NULL;
2184         u16 beacon_int = 0;
2185
2186         conf = ieee80211_get_hw_conf(priv->hw);
2187
2188         spin_lock_irqsave(&priv->lock, flags);
2189         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2190         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2191
2192         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2193
2194         tsf = priv->timestamp1;
2195         tsf = ((tsf << 32) | priv->timestamp0);
2196
2197         beacon_int = priv->beacon_int;
2198         spin_unlock_irqrestore(&priv->lock, flags);
2199
2200         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2201                 if (beacon_int == 0) {
2202                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2203                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2204                 } else {
2205                         priv->rxon_timing.beacon_interval =
2206                                 cpu_to_le16(beacon_int);
2207                         priv->rxon_timing.beacon_interval =
2208                             iwl4965_adjust_beacon_interval(
2209                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2210                 }
2211
2212                 priv->rxon_timing.atim_window = 0;
2213         } else {
2214                 priv->rxon_timing.beacon_interval =
2215                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2216                 /* TODO: we need to get atim_window from upper stack
2217                  * for now we set to 0 */
2218                 priv->rxon_timing.atim_window = 0;
2219         }
2220
2221         interval_tm_unit =
2222                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2223         result = do_div(tsf, interval_tm_unit);
2224         priv->rxon_timing.beacon_init_val =
2225             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2226
2227         IWL_DEBUG_ASSOC
2228             ("beacon interval %d beacon timer %d beacon tim %d\n",
2229                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2230                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2231                 le16_to_cpu(priv->rxon_timing.atim_window));
2232 }
2233
2234 static int iwl4965_scan_initiate(struct iwl_priv *priv)
2235 {
2236         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2237                 IWL_ERROR("APs don't scan.\n");
2238                 return 0;
2239         }
2240
2241         if (!iwl4965_is_ready_rf(priv)) {
2242                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2243                 return -EIO;
2244         }
2245
2246         if (test_bit(STATUS_SCANNING, &priv->status)) {
2247                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2248                 return -EAGAIN;
2249         }
2250
2251         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2252                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2253                                "Queuing.\n");
2254                 return -EAGAIN;
2255         }
2256
2257         IWL_DEBUG_INFO("Starting scan...\n");
2258         priv->scan_bands = 2;
2259         set_bit(STATUS_SCANNING, &priv->status);
2260         priv->scan_start = jiffies;
2261         priv->scan_pass_start = priv->scan_start;
2262
2263         queue_work(priv->workqueue, &priv->request_scan);
2264
2265         return 0;
2266 }
2267
2268 static int iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2269 {
2270         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2271
2272         if (hw_decrypt)
2273                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2274         else
2275                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2276
2277         return 0;
2278 }
2279
2280 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
2281                                           enum ieee80211_band band)
2282 {
2283         if (band == IEEE80211_BAND_5GHZ) {
2284                 priv->staging_rxon.flags &=
2285                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2286                       | RXON_FLG_CCK_MSK);
2287                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2288         } else {
2289                 /* Copied from iwl4965_bg_post_associate() */
2290                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2291                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2292                 else
2293                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2294
2295                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2296                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2297
2298                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2299                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2300                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2301         }
2302 }
2303
2304 /*
2305  * initialize rxon structure with default values from eeprom
2306  */
2307 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
2308 {
2309         const struct iwl4965_channel_info *ch_info;
2310
2311         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2312
2313         switch (priv->iw_mode) {
2314         case IEEE80211_IF_TYPE_AP:
2315                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2316                 break;
2317
2318         case IEEE80211_IF_TYPE_STA:
2319                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2320                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2321                 break;
2322
2323         case IEEE80211_IF_TYPE_IBSS:
2324                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2325                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2326                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2327                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2328                 break;
2329
2330         case IEEE80211_IF_TYPE_MNTR:
2331                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2332                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2333                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2334                 break;
2335         }
2336
2337 #if 0
2338         /* TODO:  Figure out when short_preamble would be set and cache from
2339          * that */
2340         if (!hw_to_local(priv->hw)->short_preamble)
2341                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2342         else
2343                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2344 #endif
2345
2346         ch_info = iwl4965_get_channel_info(priv, priv->band,
2347                                        le16_to_cpu(priv->staging_rxon.channel));
2348
2349         if (!ch_info)
2350                 ch_info = &priv->channel_info[0];
2351
2352         /*
2353          * in some case A channels are all non IBSS
2354          * in this case force B/G channel
2355          */
2356         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2357             !(is_channel_ibss(ch_info)))
2358                 ch_info = &priv->channel_info[0];
2359
2360         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2361         priv->band = ch_info->band;
2362
2363         iwl4965_set_flags_for_phymode(priv, priv->band);
2364
2365         priv->staging_rxon.ofdm_basic_rates =
2366             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2367         priv->staging_rxon.cck_basic_rates =
2368             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2369
2370         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2371                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2372         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2373         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2374         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2375         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2376         iwl4965_set_rxon_chain(priv);
2377 }
2378
2379 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
2380 {
2381         if (mode == IEEE80211_IF_TYPE_IBSS) {
2382                 const struct iwl4965_channel_info *ch_info;
2383
2384                 ch_info = iwl4965_get_channel_info(priv,
2385                         priv->band,
2386                         le16_to_cpu(priv->staging_rxon.channel));
2387
2388                 if (!ch_info || !is_channel_ibss(ch_info)) {
2389                         IWL_ERROR("channel %d not IBSS channel\n",
2390                                   le16_to_cpu(priv->staging_rxon.channel));
2391                         return -EINVAL;
2392                 }
2393         }
2394
2395         priv->iw_mode = mode;
2396
2397         iwl4965_connection_init_rx_config(priv);
2398         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2399
2400         iwl4965_clear_stations_table(priv);
2401
2402         /* dont commit rxon if rf-kill is on*/
2403         if (!iwl4965_is_ready_rf(priv))
2404                 return -EAGAIN;
2405
2406         cancel_delayed_work(&priv->scan_check);
2407         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2408                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2409                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2410                 return -EAGAIN;
2411         }
2412
2413         iwl4965_commit_rxon(priv);
2414
2415         return 0;
2416 }
2417
2418 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2419                                       struct ieee80211_tx_control *ctl,
2420                                       struct iwl4965_cmd *cmd,
2421                                       struct sk_buff *skb_frag,
2422                                       int last_frag)
2423 {
2424         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2425
2426         switch (keyinfo->alg) {
2427         case ALG_CCMP:
2428                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2429                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2430                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2431                         cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
2432                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2433                 break;
2434
2435         case ALG_TKIP:
2436 #if 0
2437                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2438
2439                 if (last_frag)
2440                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2441                                8);
2442                 else
2443                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2444 #endif
2445                 break;
2446
2447         case ALG_WEP:
2448                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2449                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2450
2451                 if (keyinfo->keylen == 13)
2452                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2453
2454                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2455
2456                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2457                              "with key %d\n", ctl->key_idx);
2458                 break;
2459
2460         default:
2461                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2462                 break;
2463         }
2464 }
2465
2466 /*
2467  * handle build REPLY_TX command notification.
2468  */
2469 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
2470                                   struct iwl4965_cmd *cmd,
2471                                   struct ieee80211_tx_control *ctrl,
2472                                   struct ieee80211_hdr *hdr,
2473                                   int is_unicast, u8 std_id)
2474 {
2475         __le16 *qc;
2476         u16 fc = le16_to_cpu(hdr->frame_control);
2477         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2478
2479         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2480         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2481                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2482                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2483                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2484                 if (ieee80211_is_probe_response(fc) &&
2485                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2486                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2487         } else {
2488                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2489                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2490         }
2491
2492         if (ieee80211_is_back_request(fc))
2493                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2494
2495
2496         cmd->cmd.tx.sta_id = std_id;
2497         if (ieee80211_get_morefrag(hdr))
2498                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2499
2500         qc = ieee80211_get_qos_ctrl(hdr);
2501         if (qc) {
2502                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2503                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2504         } else
2505                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2506
2507         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2508                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2509                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2510         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2511                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2512                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2513         }
2514
2515         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2516                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2517
2518         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2519         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2520                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2521                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2522                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2523                 else
2524                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2525         } else
2526                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2527
2528         cmd->cmd.tx.driver_txop = 0;
2529         cmd->cmd.tx.tx_flags = tx_flags;
2530         cmd->cmd.tx.next_frame_len = 0;
2531 }
2532 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2533 {
2534         /* 0 - mgmt, 1 - cnt, 2 - data */
2535         int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2536         priv->tx_stats[idx].cnt++;
2537         priv->tx_stats[idx].bytes += len;
2538 }
2539 /**
2540  * iwl4965_get_sta_id - Find station's index within station table
2541  *
2542  * If new IBSS station, create new entry in station table
2543  */
2544 static int iwl4965_get_sta_id(struct iwl_priv *priv,
2545                                 struct ieee80211_hdr *hdr)
2546 {
2547         int sta_id;
2548         u16 fc = le16_to_cpu(hdr->frame_control);
2549         DECLARE_MAC_BUF(mac);
2550
2551         /* If this frame is broadcast or management, use broadcast station id */
2552         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2553             is_multicast_ether_addr(hdr->addr1))
2554                 return priv->hw_setting.bcast_sta_id;
2555
2556         switch (priv->iw_mode) {
2557
2558         /* If we are a client station in a BSS network, use the special
2559          * AP station entry (that's the only station we communicate with) */
2560         case IEEE80211_IF_TYPE_STA:
2561                 return IWL_AP_ID;
2562
2563         /* If we are an AP, then find the station, or use BCAST */
2564         case IEEE80211_IF_TYPE_AP:
2565                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2566                 if (sta_id != IWL_INVALID_STATION)
2567                         return sta_id;
2568                 return priv->hw_setting.bcast_sta_id;
2569
2570         /* If this frame is going out to an IBSS network, find the station,
2571          * or create a new station table entry */
2572         case IEEE80211_IF_TYPE_IBSS:
2573                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2574                 if (sta_id != IWL_INVALID_STATION)
2575                         return sta_id;
2576
2577                 /* Create new station table entry */
2578                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2579                                                    0, CMD_ASYNC, NULL);
2580
2581                 if (sta_id != IWL_INVALID_STATION)
2582                         return sta_id;
2583
2584                 IWL_DEBUG_DROP("Station %s not in station map. "
2585                                "Defaulting to broadcast...\n",
2586                                print_mac(mac, hdr->addr1));
2587                 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2588                 return priv->hw_setting.bcast_sta_id;
2589
2590         default:
2591                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2592                 return priv->hw_setting.bcast_sta_id;
2593         }
2594 }
2595
2596 /*
2597  * start REPLY_TX command process
2598  */
2599 static int iwl4965_tx_skb(struct iwl_priv *priv,
2600                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2601 {
2602         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2603         struct iwl4965_tfd_frame *tfd;
2604         u32 *control_flags;
2605         int txq_id = ctl->queue;
2606         struct iwl4965_tx_queue *txq = NULL;
2607         struct iwl4965_queue *q = NULL;
2608         dma_addr_t phys_addr;
2609         dma_addr_t txcmd_phys;
2610         dma_addr_t scratch_phys;
2611         struct iwl4965_cmd *out_cmd = NULL;
2612         u16 len, idx, len_org;
2613         u8 id, hdr_len, unicast;
2614         u8 sta_id;
2615         u16 seq_number = 0;
2616         u16 fc;
2617         __le16 *qc;
2618         u8 wait_write_ptr = 0;
2619         unsigned long flags;
2620         int rc;
2621
2622         spin_lock_irqsave(&priv->lock, flags);
2623         if (iwl4965_is_rfkill(priv)) {
2624                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2625                 goto drop_unlock;
2626         }
2627
2628         if (!priv->vif) {
2629                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2630                 goto drop_unlock;
2631         }
2632
2633         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2634                 IWL_ERROR("ERROR: No TX rate available.\n");
2635                 goto drop_unlock;
2636         }
2637
2638         unicast = !is_multicast_ether_addr(hdr->addr1);
2639         id = 0;
2640
2641         fc = le16_to_cpu(hdr->frame_control);
2642
2643 #ifdef CONFIG_IWLWIFI_DEBUG
2644         if (ieee80211_is_auth(fc))
2645                 IWL_DEBUG_TX("Sending AUTH frame\n");
2646         else if (ieee80211_is_assoc_request(fc))
2647                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2648         else if (ieee80211_is_reassoc_request(fc))
2649                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2650 #endif
2651
2652         /* drop all data frame if we are not associated */
2653         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2654            (!iwl4965_is_associated(priv) ||
2655             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2656             !priv->assoc_station_added)) {
2657                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2658                 goto drop_unlock;
2659         }
2660
2661         spin_unlock_irqrestore(&priv->lock, flags);
2662
2663         hdr_len = ieee80211_get_hdrlen(fc);
2664
2665         /* Find (or create) index into station table for destination station */
2666         sta_id = iwl4965_get_sta_id(priv, hdr);
2667         if (sta_id == IWL_INVALID_STATION) {
2668                 DECLARE_MAC_BUF(mac);
2669
2670                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2671                                print_mac(mac, hdr->addr1));
2672                 goto drop;
2673         }
2674
2675         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2676
2677         qc = ieee80211_get_qos_ctrl(hdr);
2678         if (qc) {
2679                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2680                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2681                                 IEEE80211_SCTL_SEQ;
2682                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2683                         (hdr->seq_ctrl &
2684                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2685                 seq_number += 0x10;
2686 #ifdef CONFIG_IWL4965_HT
2687                 /* aggregation is on for this <sta,tid> */
2688                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2689                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2690                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2691 #endif /* CONFIG_IWL4965_HT */
2692         }
2693
2694         /* Descriptor for chosen Tx queue */
2695         txq = &priv->txq[txq_id];
2696         q = &txq->q;
2697
2698         spin_lock_irqsave(&priv->lock, flags);
2699
2700         /* Set up first empty TFD within this queue's circular TFD buffer */
2701         tfd = &txq->bd[q->write_ptr];
2702         memset(tfd, 0, sizeof(*tfd));
2703         control_flags = (u32 *) tfd;
2704         idx = get_cmd_index(q, q->write_ptr, 0);
2705
2706         /* Set up driver data for this TFD */
2707         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2708         txq->txb[q->write_ptr].skb[0] = skb;
2709         memcpy(&(txq->txb[q->write_ptr].status.control),
2710                ctl, sizeof(struct ieee80211_tx_control));
2711
2712         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2713         out_cmd = &txq->cmd[idx];
2714         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2715         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2716
2717         /*
2718          * Set up the Tx-command (not MAC!) header.
2719          * Store the chosen Tx queue and TFD index within the sequence field;
2720          * after Tx, uCode's Tx response will return this value so driver can
2721          * locate the frame within the tx queue and do post-tx processing.
2722          */
2723         out_cmd->hdr.cmd = REPLY_TX;
2724         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2725                                 INDEX_TO_SEQ(q->write_ptr)));
2726
2727         /* Copy MAC header from skb into command buffer */
2728         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2729
2730         /*
2731          * Use the first empty entry in this queue's command buffer array
2732          * to contain the Tx command and MAC header concatenated together
2733          * (payload data will be in another buffer).
2734          * Size of this varies, due to varying MAC header length.
2735          * If end is not dword aligned, we'll have 2 extra bytes at the end
2736          * of the MAC header (device reads on dword boundaries).
2737          * We'll tell device about this padding later.
2738          */
2739         len = priv->hw_setting.tx_cmd_len +
2740                 sizeof(struct iwl4965_cmd_header) + hdr_len;
2741
2742         len_org = len;
2743         len = (len + 3) & ~3;
2744
2745         if (len_org != len)
2746                 len_org = 1;
2747         else
2748                 len_org = 0;
2749
2750         /* Physical address of this Tx command's header (not MAC header!),
2751          * within command buffer array. */
2752         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
2753                      offsetof(struct iwl4965_cmd, hdr);
2754
2755         /* Add buffer containing Tx command and MAC(!) header to TFD's
2756          * first entry */
2757         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2758
2759         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2760                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2761
2762         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2763          * if any (802.11 null frames have no payload). */
2764         len = skb->len - hdr_len;
2765         if (len) {
2766                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2767                                            len, PCI_DMA_TODEVICE);
2768                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2769         }
2770
2771         /* Tell 4965 about any 2-byte padding after MAC header */
2772         if (len_org)
2773                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2774
2775         /* Total # bytes to be transmitted */
2776         len = (u16)skb->len;
2777         out_cmd->cmd.tx.len = cpu_to_le16(len);
2778
2779         /* TODO need this for burst mode later on */
2780         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2781
2782         /* set is_hcca to 0; it probably will never be implemented */
2783         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2784
2785         iwl_update_tx_stats(priv, fc, len);
2786
2787         scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
2788                 offsetof(struct iwl4965_tx_cmd, scratch);
2789         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2790         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2791
2792         if (!ieee80211_get_morefrag(hdr)) {
2793                 txq->need_update = 1;
2794                 if (qc) {
2795                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2796                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2797                 }
2798         } else {
2799                 wait_write_ptr = 1;
2800                 txq->need_update = 0;
2801         }
2802
2803         iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2804                            sizeof(out_cmd->cmd.tx));
2805
2806         iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2807                            ieee80211_get_hdrlen(fc));
2808
2809         /* Set up entry for this TFD in Tx byte-count array */
2810         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2811
2812         /* Tell device the write index *just past* this latest filled TFD */
2813         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2814         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2815         spin_unlock_irqrestore(&priv->lock, flags);
2816
2817         if (rc)
2818                 return rc;
2819
2820         if ((iwl4965_queue_space(q) < q->high_mark)
2821             && priv->mac80211_registered) {
2822                 if (wait_write_ptr) {
2823                         spin_lock_irqsave(&priv->lock, flags);
2824                         txq->need_update = 1;
2825                         iwl4965_tx_queue_update_write_ptr(priv, txq);
2826                         spin_unlock_irqrestore(&priv->lock, flags);
2827                 }
2828
2829                 ieee80211_stop_queue(priv->hw, ctl->queue);
2830         }
2831
2832         return 0;
2833
2834 drop_unlock:
2835         spin_unlock_irqrestore(&priv->lock, flags);
2836 drop:
2837         return -1;
2838 }
2839
2840 static void iwl4965_set_rate(struct iwl_priv *priv)
2841 {
2842         const struct ieee80211_supported_band *hw = NULL;
2843         struct ieee80211_rate *rate;
2844         int i;
2845
2846         hw = iwl4965_get_hw_mode(priv, priv->band);
2847         if (!hw) {
2848                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2849                 return;
2850         }
2851
2852         priv->active_rate = 0;
2853         priv->active_rate_basic = 0;
2854
2855         for (i = 0; i < hw->n_bitrates; i++) {
2856                 rate = &(hw->bitrates[i]);
2857                 if (rate->hw_value < IWL_RATE_COUNT)
2858                         priv->active_rate |= (1 << rate->hw_value);
2859         }
2860
2861         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2862                        priv->active_rate, priv->active_rate_basic);
2863
2864         /*
2865          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2866          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2867          * OFDM
2868          */
2869         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2870                 priv->staging_rxon.cck_basic_rates =
2871                     ((priv->active_rate_basic &
2872                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2873         else
2874                 priv->staging_rxon.cck_basic_rates =
2875                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2876
2877         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2878                 priv->staging_rxon.ofdm_basic_rates =
2879                     ((priv->active_rate_basic &
2880                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2881                       IWL_FIRST_OFDM_RATE) & 0xFF;
2882         else
2883                 priv->staging_rxon.ofdm_basic_rates =
2884                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2885 }
2886
2887 static void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2888 {
2889         unsigned long flags;
2890
2891         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2892                 return;
2893
2894         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2895                           disable_radio ? "OFF" : "ON");
2896
2897         if (disable_radio) {
2898                 iwl4965_scan_cancel(priv);
2899                 /* FIXME: This is a workaround for AP */
2900                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2901                         spin_lock_irqsave(&priv->lock, flags);
2902                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
2903                                     CSR_UCODE_SW_BIT_RFKILL);
2904                         spin_unlock_irqrestore(&priv->lock, flags);
2905                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2906                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2907                 }
2908                 return;
2909         }
2910
2911         spin_lock_irqsave(&priv->lock, flags);
2912         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2913
2914         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2915         spin_unlock_irqrestore(&priv->lock, flags);
2916
2917         /* wake up ucode */
2918         msleep(10);
2919
2920         spin_lock_irqsave(&priv->lock, flags);
2921         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
2922         if (!iwl4965_grab_nic_access(priv))
2923                 iwl4965_release_nic_access(priv);
2924         spin_unlock_irqrestore(&priv->lock, flags);
2925
2926         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2927                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2928                                   "disabled by HW switch\n");
2929                 return;
2930         }
2931
2932         queue_work(priv->workqueue, &priv->restart);
2933         return;
2934 }
2935
2936 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2937                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2938 {
2939         u16 fc =
2940             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2941
2942         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2943                 return;
2944
2945         if (!(fc & IEEE80211_FCTL_PROTECTED))
2946                 return;
2947
2948         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2949         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2950         case RX_RES_STATUS_SEC_TYPE_TKIP:
2951                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2952                     RX_RES_STATUS_BAD_ICV_MIC)
2953                         stats->flag |= RX_FLAG_MMIC_ERROR;
2954         case RX_RES_STATUS_SEC_TYPE_WEP:
2955         case RX_RES_STATUS_SEC_TYPE_CCMP:
2956                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2957                     RX_RES_STATUS_DECRYPT_OK) {
2958                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2959                         stats->flag |= RX_FLAG_DECRYPTED;
2960                 }
2961                 break;
2962
2963         default:
2964                 break;
2965         }
2966 }
2967
2968
2969 #define IWL_PACKET_RETRY_TIME HZ
2970
2971 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2972 {
2973         u16 sc = le16_to_cpu(header->seq_ctrl);
2974         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2975         u16 frag = sc & IEEE80211_SCTL_FRAG;
2976         u16 *last_seq, *last_frag;
2977         unsigned long *last_time;
2978
2979         switch (priv->iw_mode) {
2980         case IEEE80211_IF_TYPE_IBSS:{
2981                 struct list_head *p;
2982                 struct iwl4965_ibss_seq *entry = NULL;
2983                 u8 *mac = header->addr2;
2984                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2985
2986                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2987                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
2988                         if (!compare_ether_addr(entry->mac, mac))
2989                                 break;
2990                 }
2991                 if (p == &priv->ibss_mac_hash[index]) {
2992                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2993                         if (!entry) {
2994                                 IWL_ERROR("Cannot malloc new mac entry\n");
2995                                 return 0;
2996                         }
2997                         memcpy(entry->mac, mac, ETH_ALEN);
2998                         entry->seq_num = seq;
2999                         entry->frag_num = frag;
3000                         entry->packet_time = jiffies;
3001                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3002                         return 0;
3003                 }
3004                 last_seq = &entry->seq_num;
3005                 last_frag = &entry->frag_num;
3006                 last_time = &entry->packet_time;
3007                 break;
3008         }
3009         case IEEE80211_IF_TYPE_STA:
3010                 last_seq = &priv->last_seq_num;
3011                 last_frag = &priv->last_frag_num;
3012                 last_time = &priv->last_packet_time;
3013                 break;
3014         default:
3015                 return 0;
3016         }
3017         if ((*last_seq == seq) &&
3018             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3019                 if (*last_frag == frag)
3020                         goto drop;
3021                 if (*last_frag + 1 != frag)
3022                         /* out-of-order fragment */
3023                         goto drop;
3024         } else
3025                 *last_seq = seq;
3026
3027         *last_frag = frag;
3028         *last_time = jiffies;
3029         return 0;
3030
3031  drop:
3032         return 1;
3033 }
3034
3035 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3036
3037 #include "iwl-spectrum.h"
3038
3039 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3040 #define BEACON_TIME_MASK_HIGH   0xFF000000
3041 #define TIME_UNIT               1024
3042
3043 /*
3044  * extended beacon time format
3045  * time in usec will be changed into a 32-bit value in 8:24 format
3046  * the high 1 byte is the beacon counts
3047  * the lower 3 bytes is the time in usec within one beacon interval
3048  */
3049
3050 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3051 {
3052         u32 quot;
3053         u32 rem;
3054         u32 interval = beacon_interval * 1024;
3055
3056         if (!interval || !usec)
3057                 return 0;
3058
3059         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3060         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3061
3062         return (quot << 24) + rem;
3063 }
3064
3065 /* base is usually what we get from ucode with each received frame,
3066  * the same as HW timer counter counting down
3067  */
3068
3069 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3070 {
3071         u32 base_low = base & BEACON_TIME_MASK_LOW;
3072         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3073         u32 interval = beacon_interval * TIME_UNIT;
3074         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3075             (addon & BEACON_TIME_MASK_HIGH);
3076
3077         if (base_low > addon_low)
3078                 res += base_low - addon_low;
3079         else if (base_low < addon_low) {
3080                 res += interval + base_low - addon_low;
3081                 res += (1 << 24);
3082         } else
3083                 res += (1 << 24);
3084
3085         return cpu_to_le32(res);
3086 }
3087
3088 static int iwl4965_get_measurement(struct iwl_priv *priv,
3089                                struct ieee80211_measurement_params *params,
3090                                u8 type)
3091 {
3092         struct iwl4965_spectrum_cmd spectrum;
3093         struct iwl4965_rx_packet *res;
3094         struct iwl4965_host_cmd cmd = {
3095                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3096                 .data = (void *)&spectrum,
3097                 .meta.flags = CMD_WANT_SKB,
3098         };
3099         u32 add_time = le64_to_cpu(params->start_time);
3100         int rc;
3101         int spectrum_resp_status;
3102         int duration = le16_to_cpu(params->duration);
3103
3104         if (iwl4965_is_associated(priv))
3105                 add_time =
3106                     iwl4965_usecs_to_beacons(
3107                         le64_to_cpu(params->start_time) - priv->last_tsf,
3108                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3109
3110         memset(&spectrum, 0, sizeof(spectrum));
3111
3112         spectrum.channel_count = cpu_to_le16(1);
3113         spectrum.flags =
3114             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3115         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3116         cmd.len = sizeof(spectrum);
3117         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3118
3119         if (iwl4965_is_associated(priv))
3120                 spectrum.start_time =
3121                     iwl4965_add_beacon_time(priv->last_beacon_time,
3122                                 add_time,
3123                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3124         else
3125                 spectrum.start_time = 0;
3126
3127         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3128         spectrum.channels[0].channel = params->channel;
3129         spectrum.channels[0].type = type;
3130         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3131                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3132                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3133
3134         rc = iwl4965_send_cmd_sync(priv, &cmd);
3135         if (rc)
3136                 return rc;
3137
3138         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3139         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3140                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3141                 rc = -EIO;
3142         }
3143
3144         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3145         switch (spectrum_resp_status) {
3146         case 0:         /* Command will be handled */
3147                 if (res->u.spectrum.id != 0xff) {
3148                         IWL_DEBUG_INFO
3149                             ("Replaced existing measurement: %d\n",
3150                              res->u.spectrum.id);
3151                         priv->measurement_status &= ~MEASUREMENT_READY;
3152                 }
3153                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3154                 rc = 0;
3155                 break;
3156
3157         case 1:         /* Command will not be handled */
3158                 rc = -EAGAIN;
3159                 break;
3160         }
3161
3162         dev_kfree_skb_any(cmd.meta.u.skb);
3163
3164         return rc;
3165 }
3166 #endif
3167
3168 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
3169                                  struct iwl4965_tx_info *tx_sta)
3170 {
3171
3172         tx_sta->status.ack_signal = 0;
3173         tx_sta->status.excessive_retries = 0;
3174         tx_sta->status.queue_length = 0;
3175         tx_sta->status.queue_number = 0;
3176
3177         if (in_interrupt())
3178                 ieee80211_tx_status_irqsafe(priv->hw,
3179                                             tx_sta->skb[0], &(tx_sta->status));
3180         else
3181                 ieee80211_tx_status(priv->hw,
3182                                     tx_sta->skb[0], &(tx_sta->status));
3183
3184         tx_sta->skb[0] = NULL;
3185 }
3186
3187 /**
3188  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3189  *
3190  * When FW advances 'R' index, all entries between old and new 'R' index
3191  * need to be reclaimed. As result, some free space forms.  If there is
3192  * enough free space (> low mark), wake the stack that feeds us.
3193  */
3194 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
3195 {
3196         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3197         struct iwl4965_queue *q = &txq->q;
3198         int nfreed = 0;
3199
3200         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3201                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3202                           "is out of range [0-%d] %d %d.\n", txq_id,
3203                           index, q->n_bd, q->write_ptr, q->read_ptr);
3204                 return 0;
3205         }
3206
3207         for (index = iwl_queue_inc_wrap(index, q->n_bd);
3208                 q->read_ptr != index;
3209                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3210                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3211                         iwl4965_txstatus_to_ieee(priv,
3212                                         &(txq->txb[txq->q.read_ptr]));
3213                         iwl4965_hw_txq_free_tfd(priv, txq);
3214                 } else if (nfreed > 1) {
3215                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3216                                         q->write_ptr, q->read_ptr);
3217                         queue_work(priv->workqueue, &priv->restart);
3218                 }
3219                 nfreed++;
3220         }
3221
3222 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3223                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3224                         priv->mac80211_registered)
3225                 ieee80211_wake_queue(priv->hw, txq_id); */
3226
3227
3228         return nfreed;
3229 }
3230
3231 static int iwl4965_is_tx_success(u32 status)
3232 {
3233         status &= TX_STATUS_MSK;
3234         return (status == TX_STATUS_SUCCESS)
3235             || (status == TX_STATUS_DIRECT_DONE);
3236 }
3237
3238 /******************************************************************************
3239  *
3240  * Generic RX handler implementations
3241  *
3242  ******************************************************************************/
3243 #ifdef CONFIG_IWL4965_HT
3244
3245 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
3246                                     struct ieee80211_hdr *hdr)
3247 {
3248         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3249                 return IWL_AP_ID;
3250         else {
3251                 u8 *da = ieee80211_get_DA(hdr);
3252                 return iwl4965_hw_find_station(priv, da);
3253         }
3254 }
3255
3256 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3257         struct iwl_priv *priv, int txq_id, int idx)
3258 {
3259         if (priv->txq[txq_id].txb[idx].skb[0])
3260                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3261                                 txb[idx].skb[0]->data;
3262         return NULL;
3263 }
3264
3265 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3266 {
3267         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3268                                 tx_resp->frame_count);
3269         return le32_to_cpu(*scd_ssn) & MAX_SN;
3270
3271 }
3272
3273 /**
3274  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3275  */
3276 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3277                                       struct iwl4965_ht_agg *agg,
3278                                       struct iwl4965_tx_resp_agg *tx_resp,
3279                                       u16 start_idx)
3280 {
3281         u16 status;
3282         struct agg_tx_status *frame_status = &tx_resp->status;
3283         struct ieee80211_tx_status *tx_status = NULL;
3284         struct ieee80211_hdr *hdr = NULL;
3285         int i, sh;
3286         int txq_id, idx;
3287         u16 seq;
3288
3289         if (agg->wait_for_ba)
3290                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3291
3292         agg->frame_count = tx_resp->frame_count;
3293         agg->start_idx = start_idx;
3294         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3295         agg->bitmap = 0;
3296
3297         /* # frames attempted by Tx command */
3298         if (agg->frame_count == 1) {
3299                 /* Only one frame was attempted; no block-ack will arrive */
3300                 status = le16_to_cpu(frame_status[0].status);
3301                 seq  = le16_to_cpu(frame_status[0].sequence);
3302                 idx = SEQ_TO_INDEX(seq);
3303                 txq_id = SEQ_TO_QUEUE(seq);
3304
3305                 /* FIXME: code repetition */
3306                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3307                                    agg->frame_count, agg->start_idx, idx);
3308
3309                 tx_status = &(priv->txq[txq_id].txb[idx].status);
3310                 tx_status->retry_count = tx_resp->failure_frame;
3311                 tx_status->queue_number = status & 0xff;
3312                 tx_status->queue_length = tx_resp->failure_rts;
3313                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3314                 tx_status->flags = iwl4965_is_tx_success(status)?
3315                         IEEE80211_TX_STATUS_ACK : 0;
3316                 iwl4965_hwrate_to_tx_control(priv,
3317                                              le32_to_cpu(tx_resp->rate_n_flags),
3318                                              &tx_status->control);
3319                 /* FIXME: code repetition end */
3320
3321                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3322                                     status & 0xff, tx_resp->failure_frame);
3323                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3324                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3325
3326                 agg->wait_for_ba = 0;
3327         } else {
3328                 /* Two or more frames were attempted; expect block-ack */
3329                 u64 bitmap = 0;
3330                 int start = agg->start_idx;
3331
3332                 /* Construct bit-map of pending frames within Tx window */
3333                 for (i = 0; i < agg->frame_count; i++) {
3334                         u16 sc;
3335                         status = le16_to_cpu(frame_status[i].status);
3336                         seq  = le16_to_cpu(frame_status[i].sequence);
3337                         idx = SEQ_TO_INDEX(seq);
3338                         txq_id = SEQ_TO_QUEUE(seq);
3339
3340                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3341                                       AGG_TX_STATE_ABORT_MSK))
3342                                 continue;
3343
3344                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3345                                            agg->frame_count, txq_id, idx);
3346
3347                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3348
3349                         sc = le16_to_cpu(hdr->seq_ctrl);
3350                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3351                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3352                                           " idx=%d, seq_idx=%d, seq=%d\n",
3353                                           idx, SEQ_TO_SN(sc),
3354                                           hdr->seq_ctrl);
3355                                 return -1;
3356                         }
3357
3358                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3359                                            i, idx, SEQ_TO_SN(sc));
3360
3361                         sh = idx - start;
3362                         if (sh > 64) {
3363                                 sh = (start - idx) + 0xff;
3364                                 bitmap = bitmap << sh;
3365                                 sh = 0;
3366                                 start = idx;
3367                         } else if (sh < -64)
3368                                 sh  = 0xff - (start - idx);
3369                         else if (sh < 0) {
3370                                 sh = start - idx;
3371                                 start = idx;
3372                                 bitmap = bitmap << sh;
3373                                 sh = 0;
3374                         }
3375                         bitmap |= (1 << sh);
3376                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3377                                            start, (u32)(bitmap & 0xFFFFFFFF));
3378                 }
3379
3380                 agg->bitmap = bitmap;
3381                 agg->start_idx = start;
3382                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3383                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3384                                    agg->frame_count, agg->start_idx,
3385                                    agg->bitmap);
3386
3387                 if (bitmap)
3388                         agg->wait_for_ba = 1;
3389         }
3390         return 0;
3391 }
3392 #endif
3393
3394 /**
3395  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3396  */
3397 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
3398                             struct iwl4965_rx_mem_buffer *rxb)
3399 {
3400         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3401         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3402         int txq_id = SEQ_TO_QUEUE(sequence);
3403         int index = SEQ_TO_INDEX(sequence);
3404         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3405         struct ieee80211_tx_status *tx_status;
3406         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3407         u32  status = le32_to_cpu(tx_resp->status);
3408 #ifdef CONFIG_IWL4965_HT
3409         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3410         struct ieee80211_hdr *hdr;
3411         __le16 *qc;
3412 #endif
3413
3414         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3415                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3416                           "is out of range [0-%d] %d %d\n", txq_id,
3417                           index, txq->q.n_bd, txq->q.write_ptr,
3418                           txq->q.read_ptr);
3419                 return;
3420         }
3421
3422 #ifdef CONFIG_IWL4965_HT
3423         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3424         qc = ieee80211_get_qos_ctrl(hdr);
3425
3426         if (qc)
3427                 tid = le16_to_cpu(*qc) & 0xf;
3428
3429         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3430         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3431                 IWL_ERROR("Station not known\n");
3432                 return;
3433         }
3434
3435         if (txq->sched_retry) {
3436                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3437                 struct iwl4965_ht_agg *agg = NULL;
3438
3439                 if (!qc)
3440                         return;
3441
3442                 agg = &priv->stations[sta_id].tid[tid].agg;
3443
3444                 iwl4965_tx_status_reply_tx(priv, agg,
3445                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3446
3447                 if ((tx_resp->frame_count == 1) &&
3448                     !iwl4965_is_tx_success(status)) {
3449                         /* TODO: send BAR */
3450                 }
3451
3452                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3453                         int freed;
3454                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3455                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3456                                            "%d index %d\n", scd_ssn , index);
3457                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3458                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3459
3460                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3461                             txq_id >= 0 && priv->mac80211_registered &&
3462                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3463                                 ieee80211_wake_queue(priv->hw, txq_id);
3464
3465                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3466                 }
3467         } else {
3468 #endif /* CONFIG_IWL4965_HT */
3469         tx_status = &(txq->txb[txq->q.read_ptr].status);
3470
3471         tx_status->retry_count = tx_resp->failure_frame;
3472         tx_status->queue_number = status;
3473         tx_status->queue_length = tx_resp->bt_kill_count;
3474         tx_status->queue_length |= tx_resp->failure_rts;
3475         tx_status->flags =
3476             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3477         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3478                                      &tx_status->control);
3479
3480         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3481                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3482                      status, le32_to_cpu(tx_resp->rate_n_flags),
3483                      tx_resp->failure_frame);
3484
3485         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3486         if (index != -1) {
3487                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3488 #ifdef CONFIG_IWL4965_HT
3489                 if (tid != MAX_TID_COUNT)
3490                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3491                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3492                         (txq_id >= 0) &&
3493                         priv->mac80211_registered)
3494                         ieee80211_wake_queue(priv->hw, txq_id);
3495                 if (tid != MAX_TID_COUNT)
3496                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3497 #endif
3498         }
3499 #ifdef CONFIG_IWL4965_HT
3500         }
3501 #endif /* CONFIG_IWL4965_HT */
3502
3503         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3504                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3505 }
3506
3507
3508 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3509                                struct iwl4965_rx_mem_buffer *rxb)
3510 {
3511         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3512         struct iwl4965_alive_resp *palive;
3513         struct delayed_work *pwork;
3514
3515         palive = &pkt->u.alive_frame;
3516
3517         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3518                        "0x%01X 0x%01X\n",
3519                        palive->is_valid, palive->ver_type,
3520                        palive->ver_subtype);
3521
3522         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3523                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3524                 memcpy(&priv->card_alive_init,
3525                        &pkt->u.alive_frame,
3526                        sizeof(struct iwl4965_init_alive_resp));
3527                 pwork = &priv->init_alive_start;
3528         } else {
3529                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3530                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3531                        sizeof(struct iwl4965_alive_resp));
3532                 pwork = &priv->alive_start;
3533         }
3534
3535         /* We delay the ALIVE response by 5ms to
3536          * give the HW RF Kill time to activate... */
3537         if (palive->is_valid == UCODE_VALID_OK)
3538                 queue_delayed_work(priv->workqueue, pwork,
3539                                    msecs_to_jiffies(5));
3540         else
3541                 IWL_WARNING("uCode did not respond OK.\n");
3542 }
3543
3544 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3545                                  struct iwl4965_rx_mem_buffer *rxb)
3546 {
3547         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3548
3549         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3550         return;
3551 }
3552
3553 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3554                                struct iwl4965_rx_mem_buffer *rxb)
3555 {
3556         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3557
3558         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3559                 "seq 0x%04X ser 0x%08X\n",
3560                 le32_to_cpu(pkt->u.err_resp.error_type),
3561                 get_cmd_string(pkt->u.err_resp.cmd_id),
3562                 pkt->u.err_resp.cmd_id,
3563                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3564                 le32_to_cpu(pkt->u.err_resp.error_info));
3565 }
3566
3567 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3568
3569 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3570 {
3571         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3572         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3573         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3574         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3575                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3576         rxon->channel = csa->channel;
3577         priv->staging_rxon.channel = csa->channel;
3578 }
3579
3580 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3581                                           struct iwl4965_rx_mem_buffer *rxb)
3582 {
3583 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3584         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3585         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3586
3587         if (!report->state) {
3588                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3589                           "Spectrum Measure Notification: Start\n");
3590                 return;
3591         }
3592
3593         memcpy(&priv->measure_report, report, sizeof(*report));
3594         priv->measurement_status |= MEASUREMENT_READY;
3595 #endif
3596 }
3597
3598 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3599                                   struct iwl4965_rx_mem_buffer *rxb)
3600 {
3601 #ifdef CONFIG_IWLWIFI_DEBUG
3602         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3603         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3604         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3605                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3606 #endif
3607 }
3608
3609 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3610                                              struct iwl4965_rx_mem_buffer *rxb)
3611 {
3612         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3613         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3614                         "notification for %s:\n",
3615                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3616         iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3617 }
3618
3619 static void iwl4965_bg_beacon_update(struct work_struct *work)
3620 {
3621         struct iwl_priv *priv =
3622                 container_of(work, struct iwl_priv, beacon_update);
3623         struct sk_buff *beacon;
3624
3625         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3626         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3627
3628         if (!beacon) {
3629                 IWL_ERROR("update beacon failed\n");
3630                 return;
3631         }
3632
3633         mutex_lock(&priv->mutex);
3634         /* new beacon skb is allocated every time; dispose previous.*/
3635         if (priv->ibss_beacon)
3636                 dev_kfree_skb(priv->ibss_beacon);
3637
3638         priv->ibss_beacon = beacon;
3639         mutex_unlock(&priv->mutex);
3640
3641         iwl4965_send_beacon_cmd(priv);
3642 }
3643
3644 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3645                                 struct iwl4965_rx_mem_buffer *rxb)
3646 {
3647 #ifdef CONFIG_IWLWIFI_DEBUG
3648         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3649         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3650         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3651
3652         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3653                 "tsf %d %d rate %d\n",
3654                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3655                 beacon->beacon_notify_hdr.failure_frame,
3656                 le32_to_cpu(beacon->ibss_mgr_status),
3657                 le32_to_cpu(beacon->high_tsf),
3658                 le32_to_cpu(beacon->low_tsf), rate);
3659 #endif
3660
3661         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3662             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3663                 queue_work(priv->workqueue, &priv->beacon_update);
3664 }
3665
3666 /* Service response to REPLY_SCAN_CMD (0x80) */
3667 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3668                               struct iwl4965_rx_mem_buffer *rxb)
3669 {
3670 #ifdef CONFIG_IWLWIFI_DEBUG
3671         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3672         struct iwl4965_scanreq_notification *notif =
3673             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3674
3675         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3676 #endif
3677 }
3678
3679 /* Service SCAN_START_NOTIFICATION (0x82) */
3680 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3681                                     struct iwl4965_rx_mem_buffer *rxb)
3682 {
3683         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3684         struct iwl4965_scanstart_notification *notif =
3685             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3686         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3687         IWL_DEBUG_SCAN("Scan start: "
3688                        "%d [802.11%s] "
3689                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3690                        notif->channel,
3691                        notif->band ? "bg" : "a",
3692                        notif->tsf_high,
3693                        notif->tsf_low, notif->status, notif->beacon_timer);
3694 }
3695
3696 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3697 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3698                                       struct iwl4965_rx_mem_buffer *rxb)
3699 {
3700         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3701         struct iwl4965_scanresults_notification *notif =
3702             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3703
3704         IWL_DEBUG_SCAN("Scan ch.res: "
3705                        "%d [802.11%s] "
3706                        "(TSF: 0x%08X:%08X) - %d "
3707                        "elapsed=%lu usec (%dms since last)\n",
3708                        notif->channel,
3709                        notif->band ? "bg" : "a",
3710                        le32_to_cpu(notif->tsf_high),
3711                        le32_to_cpu(notif->tsf_low),
3712                        le32_to_cpu(notif->statistics[0]),
3713                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3714                        jiffies_to_msecs(elapsed_jiffies
3715                                         (priv->last_scan_jiffies, jiffies)));
3716
3717         priv->last_scan_jiffies = jiffies;
3718         priv->next_scan_jiffies = 0;
3719 }
3720
3721 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3722 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3723                                        struct iwl4965_rx_mem_buffer *rxb)
3724 {
3725         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3726         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3727
3728         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3729                        scan_notif->scanned_channels,
3730                        scan_notif->tsf_low,
3731                        scan_notif->tsf_high, scan_notif->status);
3732
3733         /* The HW is no longer scanning */
3734         clear_bit(STATUS_SCAN_HW, &priv->status);
3735
3736         /* The scan completion notification came in, so kill that timer... */
3737         cancel_delayed_work(&priv->scan_check);
3738
3739         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3740                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3741                        jiffies_to_msecs(elapsed_jiffies
3742                                         (priv->scan_pass_start, jiffies)));
3743
3744         /* Remove this scanned band from the list
3745          * of pending bands to scan */
3746         priv->scan_bands--;
3747
3748         /* If a request to abort was given, or the scan did not succeed
3749          * then we reset the scan state machine and terminate,
3750          * re-queuing another scan if one has been requested */
3751         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3752                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3753                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3754         } else {
3755                 /* If there are more bands on this scan pass reschedule */
3756                 if (priv->scan_bands > 0)
3757                         goto reschedule;
3758         }
3759
3760         priv->last_scan_jiffies = jiffies;
3761         priv->next_scan_jiffies = 0;
3762         IWL_DEBUG_INFO("Setting scan to off\n");
3763
3764         clear_bit(STATUS_SCANNING, &priv->status);
3765
3766         IWL_DEBUG_INFO("Scan took %dms\n",
3767                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3768
3769         queue_work(priv->workqueue, &priv->scan_completed);
3770
3771         return;
3772
3773 reschedule:
3774         priv->scan_pass_start = jiffies;
3775         queue_work(priv->workqueue, &priv->request_scan);
3776 }
3777
3778 /* Handle notification from uCode that card's power state is changing
3779  * due to software, hardware, or critical temperature RFKILL */
3780 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3781                                     struct iwl4965_rx_mem_buffer *rxb)
3782 {
3783         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3784         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3785         unsigned long status = priv->status;
3786
3787         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3788                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3789                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3790
3791         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3792                      RF_CARD_DISABLED)) {
3793
3794                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3795                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3796
3797                 if (!iwl4965_grab_nic_access(priv)) {
3798                         iwl4965_write_direct32(
3799                                 priv, HBUS_TARG_MBX_C,
3800                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3801
3802                         iwl4965_release_nic_access(priv);
3803                 }
3804
3805                 if (!(flags & RXON_CARD_DISABLED)) {
3806                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3807                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3808                         if (!iwl4965_grab_nic_access(priv)) {
3809                                 iwl4965_write_direct32(
3810                                         priv, HBUS_TARG_MBX_C,
3811                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3812
3813                                 iwl4965_release_nic_access(priv);
3814                         }
3815                 }
3816
3817                 if (flags & RF_CARD_DISABLED) {
3818                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3819                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3820                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3821                         if (!iwl4965_grab_nic_access(priv))
3822                                 iwl4965_release_nic_access(priv);
3823                 }
3824         }
3825
3826         if (flags & HW_CARD_DISABLED)
3827                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3828         else
3829                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3830
3831
3832         if (flags & SW_CARD_DISABLED)
3833                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3834         else
3835                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3836
3837         if (!(flags & RXON_CARD_DISABLED))
3838                 iwl4965_scan_cancel(priv);
3839
3840         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3841              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3842             (test_bit(STATUS_RF_KILL_SW, &status) !=
3843              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3844                 queue_work(priv->workqueue, &priv->rf_kill);
3845         else
3846                 wake_up_interruptible(&priv->wait_command_queue);
3847 }
3848
3849 /**
3850  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3851  *
3852  * Setup the RX handlers for each of the reply types sent from the uCode
3853  * to the host.
3854  *
3855  * This function chains into the hardware specific files for them to setup
3856  * any hardware specific handlers as well.
3857  */
3858 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3859 {
3860         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3861         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3862         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3863         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3864         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3865             iwl4965_rx_spectrum_measure_notif;
3866         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3867         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3868             iwl4965_rx_pm_debug_statistics_notif;
3869         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3870
3871         /*
3872          * The same handler is used for both the REPLY to a discrete
3873          * statistics request from the host as well as for the periodic
3874          * statistics notifications (after received beacons) from the uCode.
3875          */
3876         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3877         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3878
3879         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3880         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3881         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3882             iwl4965_rx_scan_results_notif;
3883         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3884             iwl4965_rx_scan_complete_notif;
3885         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3886         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3887
3888         /* Set up hardware specific Rx handlers */
3889         iwl4965_hw_rx_handler_setup(priv);
3890 }
3891
3892 /**
3893  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3894  * @rxb: Rx buffer to reclaim
3895  *
3896  * If an Rx buffer has an async callback associated with it the callback
3897  * will be executed.  The attached skb (if present) will only be freed
3898  * if the callback returns 1
3899  */
3900 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3901                                 struct iwl4965_rx_mem_buffer *rxb)
3902 {
3903         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3904         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3905         int txq_id = SEQ_TO_QUEUE(sequence);
3906         int index = SEQ_TO_INDEX(sequence);
3907         int huge = sequence & SEQ_HUGE_FRAME;
3908         int cmd_index;
3909         struct iwl4965_cmd *cmd;
3910
3911         /* If a Tx command is being handled and it isn't in the actual
3912          * command queue then there a command routing bug has been introduced
3913          * in the queue management code. */
3914         if (txq_id != IWL_CMD_QUEUE_NUM)
3915                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3916                           txq_id, pkt->hdr.cmd);
3917         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3918
3919         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3920         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3921
3922         /* Input error checking is done when commands are added to queue. */
3923         if (cmd->meta.flags & CMD_WANT_SKB) {
3924                 cmd->meta.source->u.skb = rxb->skb;
3925                 rxb->skb = NULL;
3926         } else if (cmd->meta.u.callback &&
3927                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3928                 rxb->skb = NULL;
3929
3930         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3931
3932         if (!(cmd->meta.flags & CMD_ASYNC)) {
3933                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3934                 wake_up_interruptible(&priv->wait_command_queue);
3935         }
3936 }
3937
3938 /************************** RX-FUNCTIONS ****************************/
3939 /*
3940  * Rx theory of operation
3941  *
3942  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3943  * each of which point to Receive Buffers to be filled by 4965.  These get
3944  * used not only for Rx frames, but for any command response or notification
3945  * from the 4965.  The driver and 4965 manage the Rx buffers by means
3946  * of indexes into the circular buffer.
3947  *
3948  * Rx Queue Indexes
3949  * The host/firmware share two index registers for managing the Rx buffers.
3950  *
3951  * The READ index maps to the first position that the firmware may be writing
3952  * to -- the driver can read up to (but not including) this position and get
3953  * good data.
3954  * The READ index is managed by the firmware once the card is enabled.
3955  *
3956  * The WRITE index maps to the last position the driver has read from -- the
3957  * position preceding WRITE is the last slot the firmware can place a packet.
3958  *
3959  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3960  * WRITE = READ.
3961  *
3962  * During initialization, the host sets up the READ queue position to the first
3963  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3964  *
3965  * When the firmware places a packet in a buffer, it will advance the READ index
3966  * and fire the RX interrupt.  The driver can then query the READ index and
3967  * process as many packets as possible, moving the WRITE index forward as it
3968  * resets the Rx queue buffers with new memory.
3969  *
3970  * The management in the driver is as follows:
3971  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3972  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3973  *   to replenish the iwl->rxq->rx_free.
3974  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3975  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3976  *   'processed' and 'read' driver indexes as well)
3977  * + A received packet is processed and handed to the kernel network stack,
3978  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3979  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3980  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3981  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3982  *   were enough free buffers and RX_STALLED is set it is cleared.
3983  *
3984  *
3985  * Driver sequence:
3986  *
3987  * iwl4965_rx_queue_alloc()   Allocates rx_free
3988  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3989  *                            iwl4965_rx_queue_restock
3990  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3991  *                            queue, updates firmware pointers, and updates
3992  *                            the WRITE index.  If insufficient rx_free buffers
3993  *                            are available, schedules iwl4965_rx_replenish
3994  *
3995  * -- enable interrupts --
3996  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
3997  *                            READ INDEX, detaching the SKB from the pool.
3998  *                            Moves the packet buffer from queue to rx_used.
3999  *                            Calls iwl4965_rx_queue_restock to refill any empty
4000  *                            slots.
4001  * ...
4002  *
4003  */
4004
4005 /**
4006  * iwl4965_rx_queue_space - Return number of free slots available in queue.
4007  */
4008 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4009 {
4010         int s = q->read - q->write;
4011         if (s <= 0)
4012                 s += RX_QUEUE_SIZE;
4013         /* keep some buffer to not confuse full and empty queue */
4014         s -= 2;
4015         if (s < 0)
4016                 s = 0;
4017         return s;
4018 }
4019
4020 /**
4021  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4022  */
4023 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
4024 {
4025         u32 reg = 0;
4026         int rc = 0;
4027         unsigned long flags;
4028
4029         spin_lock_irqsave(&q->lock, flags);
4030
4031         if (q->need_update == 0)
4032                 goto exit_unlock;
4033
4034         /* If power-saving is in use, make sure device is awake */
4035         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4036                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4037
4038                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4039                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4040                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4041                         goto exit_unlock;
4042                 }
4043
4044                 rc = iwl4965_grab_nic_access(priv);
4045                 if (rc)
4046                         goto exit_unlock;
4047
4048                 /* Device expects a multiple of 8 */
4049                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4050                                      q->write & ~0x7);
4051                 iwl4965_release_nic_access(priv);
4052
4053         /* Else device is assumed to be awake */
4054         } else
4055                 /* Device expects a multiple of 8 */
4056                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4057
4058
4059         q->need_update = 0;
4060
4061  exit_unlock:
4062         spin_unlock_irqrestore(&q->lock, flags);
4063         return rc;
4064 }
4065
4066 /**
4067  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4068  */
4069 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
4070                                           dma_addr_t dma_addr)
4071 {
4072         return cpu_to_le32((u32)(dma_addr >> 8));
4073 }
4074
4075
4076 /**
4077  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4078  *
4079  * If there are slots in the RX queue that need to be restocked,
4080  * and we have free pre-allocated buffers, fill the ranks as much
4081  * as we can, pulling from rx_free.
4082  *
4083  * This moves the 'write' index forward to catch up with 'processed', and
4084  * also updates the memory address in the firmware to reference the new
4085  * target buffer.
4086  */
4087 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
4088 {
4089         struct iwl4965_rx_queue *rxq = &priv->rxq;
4090         struct list_head *element;
4091         struct iwl4965_rx_mem_buffer *rxb;
4092         unsigned long flags;
4093         int write, rc;
4094
4095         spin_lock_irqsave(&rxq->lock, flags);
4096         write = rxq->write & ~0x7;
4097         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4098                 /* Get next free Rx buffer, remove from free list */
4099                 element = rxq->rx_free.next;
4100                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4101                 list_del(element);
4102
4103                 /* Point to Rx buffer via next RBD in circular buffer */
4104                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4105                 rxq->queue[rxq->write] = rxb;
4106                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4107                 rxq->free_count--;
4108         }
4109         spin_unlock_irqrestore(&rxq->lock, flags);
4110         /* If the pre-allocated buffer pool is dropping low, schedule to
4111          * refill it */
4112         if (rxq->free_count <= RX_LOW_WATERMARK)
4113                 queue_work(priv->workqueue, &priv->rx_replenish);
4114
4115
4116         /* If we've added more space for the firmware to place data, tell it.
4117          * Increment device's write pointer in multiples of 8. */
4118         if ((write != (rxq->write & ~0x7))
4119             || (abs(rxq->write - rxq->read) > 7)) {
4120                 spin_lock_irqsave(&rxq->lock, flags);
4121                 rxq->need_update = 1;
4122                 spin_unlock_irqrestore(&rxq->lock, flags);
4123                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4124                 if (rc)
4125                         return rc;
4126         }
4127
4128         return 0;
4129 }
4130
4131 /**
4132  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4133  *
4134  * When moving to rx_free an SKB is allocated for the slot.
4135  *
4136  * Also restock the Rx queue via iwl4965_rx_queue_restock.
4137  * This is called as a scheduled work item (except for during initialization)
4138  */
4139 static void iwl4965_rx_allocate(struct iwl_priv *priv)
4140 {
4141         struct iwl4965_rx_queue *rxq = &priv->rxq;
4142         struct list_head *element;
4143         struct iwl4965_rx_mem_buffer *rxb;
4144         unsigned long flags;
4145         spin_lock_irqsave(&rxq->lock, flags);
4146         while (!list_empty(&rxq->rx_used)) {
4147                 element = rxq->rx_used.next;
4148                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4149
4150                 /* Alloc a new receive buffer */
4151                 rxb->skb =
4152                     alloc_skb(priv->hw_setting.rx_buf_size,
4153                                 __GFP_NOWARN | GFP_ATOMIC);
4154                 if (!rxb->skb) {
4155                         if (net_ratelimit())
4156                                 printk(KERN_CRIT DRV_NAME
4157                                        ": Can not allocate SKB buffers\n");
4158                         /* We don't reschedule replenish work here -- we will
4159                          * call the restock method and if it still needs
4160                          * more buffers it will schedule replenish */
4161                         break;
4162                 }
4163                 priv->alloc_rxb_skb++;
4164                 list_del(element);
4165
4166                 /* Get physical address of RB/SKB */
4167                 rxb->dma_addr =
4168                     pci_map_single(priv->pci_dev, rxb->skb->data,
4169                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4170                 list_add_tail(&rxb->list, &rxq->rx_free);
4171                 rxq->free_count++;
4172         }
4173         spin_unlock_irqrestore(&rxq->lock, flags);
4174 }
4175
4176 /*
4177  * this should be called while priv->lock is locked
4178 */
4179 static void __iwl4965_rx_replenish(void *data)
4180 {
4181         struct iwl_priv *priv = data;
4182
4183         iwl4965_rx_allocate(priv);
4184         iwl4965_rx_queue_restock(priv);
4185 }
4186
4187
4188 void iwl4965_rx_replenish(void *data)
4189 {
4190         struct iwl_priv *priv = data;
4191         unsigned long flags;
4192
4193         iwl4965_rx_allocate(priv);
4194
4195         spin_lock_irqsave(&priv->lock, flags);
4196         iwl4965_rx_queue_restock(priv);
4197         spin_unlock_irqrestore(&priv->lock, flags);
4198 }
4199
4200 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4201  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4202  * This free routine walks the list of POOL entries and if SKB is set to
4203  * non NULL it is unmapped and freed
4204  */
4205 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
4206 {
4207         int i;
4208         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4209                 if (rxq->pool[i].skb != NULL) {
4210                         pci_unmap_single(priv->pci_dev,
4211                                          rxq->pool[i].dma_addr,
4212                                          priv->hw_setting.rx_buf_size,
4213                                          PCI_DMA_FROMDEVICE);
4214                         dev_kfree_skb(rxq->pool[i].skb);
4215                 }
4216         }
4217
4218         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4219                             rxq->dma_addr);
4220         rxq->bd = NULL;
4221 }
4222
4223 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
4224 {
4225         struct iwl4965_rx_queue *rxq = &priv->rxq;
4226         struct pci_dev *dev = priv->pci_dev;
4227         int i;
4228
4229         spin_lock_init(&rxq->lock);
4230         INIT_LIST_HEAD(&rxq->rx_free);
4231         INIT_LIST_HEAD(&rxq->rx_used);
4232
4233         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4234         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4235         if (!rxq->bd)
4236                 return -ENOMEM;
4237
4238         /* Fill the rx_used queue with _all_ of the Rx buffers */
4239         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4240                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4241
4242         /* Set us so that we have processed and used all buffers, but have
4243          * not restocked the Rx queue with fresh buffers */
4244         rxq->read = rxq->write = 0;
4245         rxq->free_count = 0;
4246         rxq->need_update = 0;
4247         return 0;
4248 }
4249
4250 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
4251 {
4252         unsigned long flags;
4253         int i;
4254         spin_lock_irqsave(&rxq->lock, flags);
4255         INIT_LIST_HEAD(&rxq->rx_free);
4256         INIT_LIST_HEAD(&rxq->rx_used);
4257         /* Fill the rx_used queue with _all_ of the Rx buffers */
4258         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4259                 /* In the reset function, these buffers may have been allocated
4260                  * to an SKB, so we need to unmap and free potential storage */
4261                 if (rxq->pool[i].skb != NULL) {
4262                         pci_unmap_single(priv->pci_dev,
4263                                          rxq->pool[i].dma_addr,
4264                                          priv->hw_setting.rx_buf_size,
4265                                          PCI_DMA_FROMDEVICE);
4266                         priv->alloc_rxb_skb--;
4267                         dev_kfree_skb(rxq->pool[i].skb);
4268                         rxq->pool[i].skb = NULL;
4269                 }
4270                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4271         }
4272
4273         /* Set us so that we have processed and used all buffers, but have
4274          * not restocked the Rx queue with fresh buffers */
4275         rxq->read = rxq->write = 0;
4276         rxq->free_count = 0;
4277         spin_unlock_irqrestore(&rxq->lock, flags);
4278 }
4279
4280 /* Convert linear signal-to-noise ratio into dB */
4281 static u8 ratio2dB[100] = {
4282 /*       0   1   2   3   4   5   6   7   8   9 */
4283          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4284         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4285         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4286         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4287         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4288         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4289         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4290         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4291         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4292         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4293 };
4294
4295 /* Calculates a relative dB value from a ratio of linear
4296  *   (i.e. not dB) signal levels.
4297  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4298 int iwl4965_calc_db_from_ratio(int sig_ratio)
4299 {
4300         /* 1000:1 or higher just report as 60 dB */
4301         if (sig_ratio >= 1000)
4302                 return 60;
4303
4304         /* 100:1 or higher, divide by 10 and use table,
4305          *   add 20 dB to make up for divide by 10 */
4306         if (sig_ratio >= 100)
4307                 return (20 + (int)ratio2dB[sig_ratio/10]);
4308
4309         /* We shouldn't see this */
4310         if (sig_ratio < 1)
4311                 return 0;
4312
4313         /* Use table for ratios 1:1 - 99:1 */
4314         return (int)ratio2dB[sig_ratio];
4315 }
4316
4317 #define PERFECT_RSSI (-20) /* dBm */
4318 #define WORST_RSSI (-95)   /* dBm */
4319 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4320
4321 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4322  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4323  *   about formulas used below. */
4324 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4325 {
4326         int sig_qual;
4327         int degradation = PERFECT_RSSI - rssi_dbm;
4328
4329         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4330          * as indicator; formula is (signal dbm - noise dbm).
4331          * SNR at or above 40 is a great signal (100%).
4332          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4333          * Weakest usable signal is usually 10 - 15 dB SNR. */
4334         if (noise_dbm) {
4335                 if (rssi_dbm - noise_dbm >= 40)
4336                         return 100;
4337                 else if (rssi_dbm < noise_dbm)
4338                         return 0;
4339                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4340
4341         /* Else use just the signal level.
4342          * This formula is a least squares fit of data points collected and
4343          *   compared with a reference system that had a percentage (%) display
4344          *   for signal quality. */
4345         } else
4346                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4347                             (15 * RSSI_RANGE + 62 * degradation)) /
4348                            (RSSI_RANGE * RSSI_RANGE);
4349
4350         if (sig_qual > 100)
4351                 sig_qual = 100;
4352         else if (sig_qual < 1)
4353                 sig_qual = 0;
4354
4355         return sig_qual;
4356 }
4357
4358 /**
4359  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4360  *
4361  * Uses the priv->rx_handlers callback function array to invoke
4362  * the appropriate handlers, including command responses,
4363  * frame-received notifications, and other notifications.
4364  */
4365 static void iwl4965_rx_handle(struct iwl_priv *priv)
4366 {
4367         struct iwl4965_rx_mem_buffer *rxb;
4368         struct iwl4965_rx_packet *pkt;
4369         struct iwl4965_rx_queue *rxq = &priv->rxq;
4370         u32 r, i;
4371         int reclaim;
4372         unsigned long flags;
4373         u8 fill_rx = 0;
4374         u32 count = 8;
4375
4376         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4377          * buffer that the driver may process (last buffer filled by ucode). */
4378         r = iwl4965_hw_get_rx_read(priv);
4379         i = rxq->read;
4380
4381         /* Rx interrupt, but nothing sent from uCode */
4382         if (i == r)
4383                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4384
4385         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4386                 fill_rx = 1;
4387
4388         while (i != r) {
4389                 rxb = rxq->queue[i];
4390
4391                 /* If an RXB doesn't have a Rx queue slot associated with it,
4392                  * then a bug has been introduced in the queue refilling
4393                  * routines -- catch it here */
4394                 BUG_ON(rxb == NULL);
4395
4396                 rxq->queue[i] = NULL;
4397
4398                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4399                                             priv->hw_setting.rx_buf_size,
4400                                             PCI_DMA_FROMDEVICE);
4401                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4402
4403                 /* Reclaim a command buffer only if this packet is a response
4404                  *   to a (driver-originated) command.
4405                  * If the packet (e.g. Rx frame) originated from uCode,
4406                  *   there is no command buffer to reclaim.
4407                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4408                  *   but apparently a few don't get set; catch them here. */
4409                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4410                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4411                         (pkt->hdr.cmd != REPLY_4965_RX) &&
4412                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4413                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4414                         (pkt->hdr.cmd != REPLY_TX);
4415
4416                 /* Based on type of command response or notification,
4417                  *   handle those that need handling via function in
4418                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4419                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4420                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4421                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4422                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4423                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4424                 } else {
4425                         /* No handling needed */
4426                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4427                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4428                                 r, i, get_cmd_string(pkt->hdr.cmd),
4429                                 pkt->hdr.cmd);
4430                 }
4431
4432                 if (reclaim) {
4433                         /* Invoke any callbacks, transfer the skb to caller, and
4434                          * fire off the (possibly) blocking iwl4965_send_cmd()
4435                          * as we reclaim the driver command queue */
4436                         if (rxb && rxb->skb)
4437                                 iwl4965_tx_cmd_complete(priv, rxb);
4438                         else
4439                                 IWL_WARNING("Claim null rxb?\n");
4440                 }
4441
4442                 /* For now we just don't re-use anything.  We can tweak this
4443                  * later to try and re-use notification packets and SKBs that
4444                  * fail to Rx correctly */
4445                 if (rxb->skb != NULL) {
4446                         priv->alloc_rxb_skb--;
4447                         dev_kfree_skb_any(rxb->skb);
4448                         rxb->skb = NULL;
4449                 }
4450
4451                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4452                                  priv->hw_setting.rx_buf_size,
4453                                  PCI_DMA_FROMDEVICE);
4454                 spin_lock_irqsave(&rxq->lock, flags);
4455                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4456                 spin_unlock_irqrestore(&rxq->lock, flags);
4457                 i = (i + 1) & RX_QUEUE_MASK;
4458                 /* If there are a lot of unused frames,
4459                  * restock the Rx queue so ucode wont assert. */
4460                 if (fill_rx) {
4461                         count++;
4462                         if (count >= 8) {
4463                                 priv->rxq.read = i;
4464                                 __iwl4965_rx_replenish(priv);
4465                                 count = 0;
4466                         }
4467                 }
4468         }
4469
4470         /* Backtrack one entry */
4471         priv->rxq.read = i;
4472         iwl4965_rx_queue_restock(priv);
4473 }
4474
4475 /**
4476  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4477  */
4478 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4479                                   struct iwl4965_tx_queue *txq)
4480 {
4481         u32 reg = 0;
4482         int rc = 0;
4483         int txq_id = txq->q.id;
4484
4485         if (txq->need_update == 0)
4486                 return rc;
4487
4488         /* if we're trying to save power */
4489         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4490                 /* wake up nic if it's powered down ...
4491                  * uCode will wake up, and interrupt us again, so next
4492                  * time we'll skip this part. */
4493                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4494
4495                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4496                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4497                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4498                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4499                         return rc;
4500                 }
4501
4502                 /* restore this queue's parameters in nic hardware. */
4503                 rc = iwl4965_grab_nic_access(priv);
4504                 if (rc)
4505                         return rc;
4506                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4507                                      txq->q.write_ptr | (txq_id << 8));
4508                 iwl4965_release_nic_access(priv);
4509
4510         /* else not in power-save mode, uCode will never sleep when we're
4511          * trying to tx (during RFKILL, we're not trying to tx). */
4512         } else
4513                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4514                             txq->q.write_ptr | (txq_id << 8));
4515
4516         txq->need_update = 0;
4517
4518         return rc;
4519 }
4520
4521 #ifdef CONFIG_IWLWIFI_DEBUG
4522 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4523 {
4524         DECLARE_MAC_BUF(mac);
4525
4526         IWL_DEBUG_RADIO("RX CONFIG:\n");
4527         iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4528         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4529         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4530         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4531                         le32_to_cpu(rxon->filter_flags));
4532         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4533         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4534                         rxon->ofdm_basic_rates);
4535         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4536         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4537                         print_mac(mac, rxon->node_addr));
4538         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4539                         print_mac(mac, rxon->bssid_addr));
4540         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4541 }
4542 #endif
4543
4544 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4545 {
4546         IWL_DEBUG_ISR("Enabling interrupts\n");
4547         set_bit(STATUS_INT_ENABLED, &priv->status);
4548         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4549 }
4550
4551 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4552 {
4553         clear_bit(STATUS_INT_ENABLED, &priv->status);
4554
4555         /* disable interrupts from uCode/NIC to host */
4556         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4557
4558         /* acknowledge/clear/reset any interrupts still pending
4559          * from uCode or flow handler (Rx/Tx DMA) */
4560         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4561         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4562         IWL_DEBUG_ISR("Disabled interrupts\n");
4563 }
4564
4565 static const char *desc_lookup(int i)
4566 {
4567         switch (i) {
4568         case 1:
4569                 return "FAIL";
4570         case 2:
4571                 return "BAD_PARAM";
4572         case 3:
4573                 return "BAD_CHECKSUM";
4574         case 4:
4575                 return "NMI_INTERRUPT";
4576         case 5:
4577                 return "SYSASSERT";
4578         case 6:
4579                 return "FATAL_ERROR";
4580         }
4581
4582         return "UNKNOWN";
4583 }
4584
4585 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4586 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4587
4588 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4589 {
4590         u32 data2, line;
4591         u32 desc, time, count, base, data1;
4592         u32 blink1, blink2, ilink1, ilink2;
4593         int rc;
4594
4595         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4596
4597         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4598                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4599                 return;
4600         }
4601
4602         rc = iwl4965_grab_nic_access(priv);
4603         if (rc) {
4604                 IWL_WARNING("Can not read from adapter at this time.\n");
4605                 return;
4606         }
4607
4608         count = iwl4965_read_targ_mem(priv, base);
4609
4610         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4611                 IWL_ERROR("Start IWL Error Log Dump:\n");
4612                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4613         }
4614
4615         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4616         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4617         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4618         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4619         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4620         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4621         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4622         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4623         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4624
4625         IWL_ERROR("Desc               Time       "
4626                   "data1      data2      line\n");
4627         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4628                   desc_lookup(desc), desc, time, data1, data2, line);
4629         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4630         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4631                   ilink1, ilink2);
4632
4633         iwl4965_release_nic_access(priv);
4634 }
4635
4636 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4637
4638 /**
4639  * iwl4965_print_event_log - Dump error event log to syslog
4640  *
4641  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4642  */
4643 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4644                                 u32 num_events, u32 mode)
4645 {
4646         u32 i;
4647         u32 base;       /* SRAM byte address of event log header */
4648         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4649         u32 ptr;        /* SRAM byte address of log data */
4650         u32 ev, time, data; /* event log data */
4651
4652         if (num_events == 0)
4653                 return;
4654
4655         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4656
4657         if (mode == 0)
4658                 event_size = 2 * sizeof(u32);
4659         else
4660                 event_size = 3 * sizeof(u32);
4661
4662         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4663
4664         /* "time" is actually "data" for mode 0 (no timestamp).
4665          * place event id # at far right for easier visual parsing. */
4666         for (i = 0; i < num_events; i++) {
4667                 ev = iwl4965_read_targ_mem(priv, ptr);
4668                 ptr += sizeof(u32);
4669                 time = iwl4965_read_targ_mem(priv, ptr);
4670                 ptr += sizeof(u32);
4671                 if (mode == 0)
4672                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4673                 else {
4674                         data = iwl4965_read_targ_mem(priv, ptr);
4675                         ptr += sizeof(u32);
4676                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4677                 }
4678         }
4679 }
4680
4681 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4682 {
4683         int rc;
4684         u32 base;       /* SRAM byte address of event log header */
4685         u32 capacity;   /* event log capacity in # entries */
4686         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4687         u32 num_wraps;  /* # times uCode wrapped to top of log */
4688         u32 next_entry; /* index of next entry to be written by uCode */
4689         u32 size;       /* # entries that we'll print */
4690
4691         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4692         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4693                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4694                 return;
4695         }
4696
4697         rc = iwl4965_grab_nic_access(priv);
4698         if (rc) {
4699                 IWL_WARNING("Can not read from adapter at this time.\n");
4700                 return;
4701         }
4702
4703         /* event log header */
4704         capacity = iwl4965_read_targ_mem(priv, base);
4705         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4706         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4707         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4708
4709         size = num_wraps ? capacity : next_entry;
4710
4711         /* bail out if nothing in log */
4712         if (size == 0) {
4713                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4714                 iwl4965_release_nic_access(priv);
4715                 return;
4716         }
4717
4718         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4719                   size, num_wraps);
4720
4721         /* if uCode has wrapped back to top of log, start at the oldest entry,
4722          * i.e the next one that uCode would fill. */
4723         if (num_wraps)
4724                 iwl4965_print_event_log(priv, next_entry,
4725                                     capacity - next_entry, mode);
4726
4727         /* (then/else) start at top of log */
4728         iwl4965_print_event_log(priv, 0, next_entry, mode);
4729
4730         iwl4965_release_nic_access(priv);
4731 }
4732
4733 /**
4734  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4735  */
4736 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4737 {
4738         /* Set the FW error flag -- cleared on iwl4965_down */
4739         set_bit(STATUS_FW_ERROR, &priv->status);
4740
4741         /* Cancel currently queued command. */
4742         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4743
4744 #ifdef CONFIG_IWLWIFI_DEBUG
4745         if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4746                 iwl4965_dump_nic_error_log(priv);
4747                 iwl4965_dump_nic_event_log(priv);
4748                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4749         }
4750 #endif
4751
4752         wake_up_interruptible(&priv->wait_command_queue);
4753
4754         /* Keep the restart process from trying to send host
4755          * commands by clearing the INIT status bit */
4756         clear_bit(STATUS_READY, &priv->status);
4757
4758         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4759                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4760                           "Restarting adapter due to uCode error.\n");
4761
4762                 if (iwl4965_is_associated(priv)) {
4763                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4764                                sizeof(priv->recovery_rxon));
4765                         priv->error_recovering = 1;
4766                 }
4767                 queue_work(priv->workqueue, &priv->restart);
4768         }
4769 }
4770
4771 static void iwl4965_error_recovery(struct iwl_priv *priv)
4772 {
4773         unsigned long flags;
4774
4775         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4776                sizeof(priv->staging_rxon));
4777         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4778         iwl4965_commit_rxon(priv);
4779
4780         iwl4965_rxon_add_station(priv, priv->bssid, 1);
4781
4782         spin_lock_irqsave(&priv->lock, flags);
4783         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4784         priv->error_recovering = 0;
4785         spin_unlock_irqrestore(&priv->lock, flags);
4786 }
4787
4788 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4789 {
4790         u32 inta, handled = 0;
4791         u32 inta_fh;
4792         unsigned long flags;
4793 #ifdef CONFIG_IWLWIFI_DEBUG
4794         u32 inta_mask;
4795 #endif
4796
4797         spin_lock_irqsave(&priv->lock, flags);
4798
4799         /* Ack/clear/reset pending uCode interrupts.
4800          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4801          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4802         inta = iwl4965_read32(priv, CSR_INT);
4803         iwl4965_write32(priv, CSR_INT, inta);
4804
4805         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4806          * Any new interrupts that happen after this, either while we're
4807          * in this tasklet, or later, will show up in next ISR/tasklet. */
4808         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4809         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4810
4811 #ifdef CONFIG_IWLWIFI_DEBUG
4812         if (iwl_debug_level & IWL_DL_ISR) {
4813                 /* just for debug */
4814                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4815                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4816                               inta, inta_mask, inta_fh);
4817         }
4818 #endif
4819
4820         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4821          * atomic, make sure that inta covers all the interrupts that
4822          * we've discovered, even if FH interrupt came in just after
4823          * reading CSR_INT. */
4824         if (inta_fh & CSR49_FH_INT_RX_MASK)
4825                 inta |= CSR_INT_BIT_FH_RX;
4826         if (inta_fh & CSR49_FH_INT_TX_MASK)
4827                 inta |= CSR_INT_BIT_FH_TX;
4828
4829         /* Now service all interrupt bits discovered above. */
4830         if (inta & CSR_INT_BIT_HW_ERR) {
4831                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4832
4833                 /* Tell the device to stop sending interrupts */
4834                 iwl4965_disable_interrupts(priv);
4835
4836                 iwl4965_irq_handle_error(priv);
4837
4838                 handled |= CSR_INT_BIT_HW_ERR;
4839
4840                 spin_unlock_irqrestore(&priv->lock, flags);
4841
4842                 return;
4843         }
4844
4845 #ifdef CONFIG_IWLWIFI_DEBUG
4846         if (iwl_debug_level & (IWL_DL_ISR)) {
4847                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4848                 if (inta & CSR_INT_BIT_SCD)
4849                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4850                                       "the frame/frames.\n");
4851
4852                 /* Alive notification via Rx interrupt will do the real work */
4853                 if (inta & CSR_INT_BIT_ALIVE)
4854                         IWL_DEBUG_ISR("Alive interrupt\n");
4855         }
4856 #endif
4857         /* Safely ignore these bits for debug checks below */
4858         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4859
4860         /* HW RF KILL switch toggled */
4861         if (inta & CSR_INT_BIT_RF_KILL) {
4862                 int hw_rf_kill = 0;
4863                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
4864                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4865                         hw_rf_kill = 1;
4866
4867                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4868                                 "RF_KILL bit toggled to %s.\n",
4869                                 hw_rf_kill ? "disable radio":"enable radio");
4870
4871                 /* Queue restart only if RF_KILL switch was set to "kill"
4872                  *   when we loaded driver, and is now set to "enable".
4873                  * After we're Alive, RF_KILL gets handled by
4874                  *   iwl4965_rx_card_state_notif() */
4875                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4876                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4877                         queue_work(priv->workqueue, &priv->restart);
4878                 }
4879
4880                 handled |= CSR_INT_BIT_RF_KILL;
4881         }
4882
4883         /* Chip got too hot and stopped itself */
4884         if (inta & CSR_INT_BIT_CT_KILL) {
4885                 IWL_ERROR("Microcode CT kill error detected.\n");
4886                 handled |= CSR_INT_BIT_CT_KILL;
4887         }
4888
4889         /* Error detected by uCode */
4890         if (inta & CSR_INT_BIT_SW_ERR) {
4891                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4892                           inta);
4893                 iwl4965_irq_handle_error(priv);
4894                 handled |= CSR_INT_BIT_SW_ERR;
4895         }
4896
4897         /* uCode wakes up after power-down sleep */
4898         if (inta & CSR_INT_BIT_WAKEUP) {
4899                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4900                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4901                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4902                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4903                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4904                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4905                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4906                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4907
4908                 handled |= CSR_INT_BIT_WAKEUP;
4909         }
4910
4911         /* All uCode command responses, including Tx command responses,
4912          * Rx "responses" (frame-received notification), and other
4913          * notifications from uCode come through here*/
4914         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4915                 iwl4965_rx_handle(priv);
4916                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4917         }
4918
4919         if (inta & CSR_INT_BIT_FH_TX) {
4920                 IWL_DEBUG_ISR("Tx interrupt\n");
4921                 handled |= CSR_INT_BIT_FH_TX;
4922         }
4923
4924         if (inta & ~handled)
4925                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4926
4927         if (inta & ~CSR_INI_SET_MASK) {
4928                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4929                          inta & ~CSR_INI_SET_MASK);
4930                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4931         }
4932
4933         /* Re-enable all interrupts */
4934         iwl4965_enable_interrupts(priv);
4935
4936 #ifdef CONFIG_IWLWIFI_DEBUG
4937         if (iwl_debug_level & (IWL_DL_ISR)) {
4938                 inta = iwl4965_read32(priv, CSR_INT);
4939                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4940                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4941                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4942                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4943         }
4944 #endif
4945         spin_unlock_irqrestore(&priv->lock, flags);
4946 }
4947
4948 static irqreturn_t iwl4965_isr(int irq, void *data)
4949 {
4950         struct iwl_priv *priv = data;
4951         u32 inta, inta_mask;
4952         u32 inta_fh;
4953         if (!priv)
4954                 return IRQ_NONE;
4955
4956         spin_lock(&priv->lock);
4957
4958         /* Disable (but don't clear!) interrupts here to avoid
4959          *    back-to-back ISRs and sporadic interrupts from our NIC.
4960          * If we have something to service, the tasklet will re-enable ints.
4961          * If we *don't* have something, we'll re-enable before leaving here. */
4962         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
4963         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4964
4965         /* Discover which interrupts are active/pending */
4966         inta = iwl4965_read32(priv, CSR_INT);
4967         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4968
4969         /* Ignore interrupt if there's nothing in NIC to service.
4970          * This may be due to IRQ shared with another device,
4971          * or due to sporadic interrupts thrown from our NIC. */
4972         if (!inta && !inta_fh) {
4973                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4974                 goto none;
4975         }
4976
4977         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4978                 /* Hardware disappeared. It might have already raised
4979                  * an interrupt */
4980                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4981                 goto unplugged;
4982         }
4983
4984         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4985                       inta, inta_mask, inta_fh);
4986
4987         inta &= ~CSR_INT_BIT_SCD;
4988
4989         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4990         if (likely(inta || inta_fh))
4991                 tasklet_schedule(&priv->irq_tasklet);
4992
4993  unplugged:
4994         spin_unlock(&priv->lock);
4995         return IRQ_HANDLED;
4996
4997  none:
4998         /* re-enable interrupts here since we don't have anything to service. */
4999         iwl4965_enable_interrupts(priv);
5000         spin_unlock(&priv->lock);
5001         return IRQ_NONE;
5002 }
5003
5004 /************************** EEPROM BANDS ****************************
5005  *
5006  * The iwl4965_eeprom_band definitions below provide the mapping from the
5007  * EEPROM contents to the specific channel number supported for each
5008  * band.
5009  *
5010  * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5011  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5012  * The specific geography and calibration information for that channel
5013  * is contained in the eeprom map itself.
5014  *
5015  * During init, we copy the eeprom information and channel map
5016  * information into priv->channel_info_24/52 and priv->channel_map_24/52
5017  *
5018  * channel_map_24/52 provides the index in the channel_info array for a
5019  * given channel.  We have to have two separate maps as there is channel
5020  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5021  * band_2
5022  *
5023  * A value of 0xff stored in the channel_map indicates that the channel
5024  * is not supported by the hardware at all.
5025  *
5026  * A value of 0xfe in the channel_map indicates that the channel is not
5027  * valid for Tx with the current hardware.  This means that
5028  * while the system can tune and receive on a given channel, it may not
5029  * be able to associate or transmit any frames on that
5030  * channel.  There is no corresponding channel information for that
5031  * entry.
5032  *
5033  *********************************************************************/
5034
5035 /* 2.4 GHz */
5036 static const u8 iwl4965_eeprom_band_1[14] = {
5037         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5038 };
5039
5040 /* 5.2 GHz bands */
5041 static const u8 iwl4965_eeprom_band_2[] = {     /* 4915-5080MHz */
5042         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5043 };
5044
5045 static const u8 iwl4965_eeprom_band_3[] = {     /* 5170-5320MHz */
5046         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5047 };
5048
5049 static const u8 iwl4965_eeprom_band_4[] = {     /* 5500-5700MHz */
5050         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5051 };
5052
5053 static const u8 iwl4965_eeprom_band_5[] = {     /* 5725-5825MHz */
5054         145, 149, 153, 157, 161, 165
5055 };
5056
5057 static u8 iwl4965_eeprom_band_6[] = {       /* 2.4 FAT channel */
5058         1, 2, 3, 4, 5, 6, 7
5059 };
5060
5061 static u8 iwl4965_eeprom_band_7[] = {       /* 5.2 FAT channel */
5062         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5063 };
5064
5065 static void iwl4965_init_band_reference(const struct iwl_priv *priv,
5066                                     int band,
5067                                     int *eeprom_ch_count,
5068                                     const struct iwl4965_eeprom_channel
5069                                     **eeprom_ch_info,
5070                                     const u8 **eeprom_ch_index)
5071 {
5072         switch (band) {
5073         case 1:         /* 2.4GHz band */
5074                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5075                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5076                 *eeprom_ch_index = iwl4965_eeprom_band_1;
5077                 break;
5078         case 2:         /* 4.9GHz band */
5079                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5080                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5081                 *eeprom_ch_index = iwl4965_eeprom_band_2;
5082                 break;
5083         case 3:         /* 5.2GHz band */
5084                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5085                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5086                 *eeprom_ch_index = iwl4965_eeprom_band_3;
5087                 break;
5088         case 4:         /* 5.5GHz band */
5089                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5090                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5091                 *eeprom_ch_index = iwl4965_eeprom_band_4;
5092                 break;
5093         case 5:         /* 5.7GHz band */
5094                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5095                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5096                 *eeprom_ch_index = iwl4965_eeprom_band_5;
5097                 break;
5098         case 6:         /* 2.4GHz FAT channels */
5099                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5100                 *eeprom_ch_info = priv->eeprom.band_24_channels;
5101                 *eeprom_ch_index = iwl4965_eeprom_band_6;
5102                 break;
5103         case 7:         /* 5 GHz FAT channels */
5104                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5105                 *eeprom_ch_info = priv->eeprom.band_52_channels;
5106                 *eeprom_ch_index = iwl4965_eeprom_band_7;
5107                 break;
5108         default:
5109                 BUG();
5110                 return;
5111         }
5112 }
5113
5114 /**
5115  * iwl4965_get_channel_info - Find driver's private channel info
5116  *
5117  * Based on band and channel number.
5118  */
5119 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl_priv *priv,
5120                                                     enum ieee80211_band band, u16 channel)
5121 {
5122         int i;
5123
5124         switch (band) {
5125         case IEEE80211_BAND_5GHZ:
5126                 for (i = 14; i < priv->channel_count; i++) {
5127                         if (priv->channel_info[i].channel == channel)
5128                                 return &priv->channel_info[i];
5129                 }
5130                 break;
5131         case IEEE80211_BAND_2GHZ:
5132                 if (channel >= 1 && channel <= 14)
5133                         return &priv->channel_info[channel - 1];
5134                 break;
5135         default:
5136                 BUG();
5137         }
5138
5139         return NULL;
5140 }
5141
5142 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5143                             ? # x " " : "")
5144
5145 /**
5146  * iwl4965_init_channel_map - Set up driver's info for all possible channels
5147  */
5148 static int iwl4965_init_channel_map(struct iwl_priv *priv)
5149 {
5150         int eeprom_ch_count = 0;
5151         const u8 *eeprom_ch_index = NULL;
5152         const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5153         int band, ch;
5154         struct iwl4965_channel_info *ch_info;
5155
5156         if (priv->channel_count) {
5157                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5158                 return 0;
5159         }
5160
5161         if (priv->eeprom.version < 0x2f) {
5162                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5163                             priv->eeprom.version);
5164                 return -EINVAL;
5165         }
5166
5167         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5168
5169         priv->channel_count =
5170             ARRAY_SIZE(iwl4965_eeprom_band_1) +
5171             ARRAY_SIZE(iwl4965_eeprom_band_2) +
5172             ARRAY_SIZE(iwl4965_eeprom_band_3) +
5173             ARRAY_SIZE(iwl4965_eeprom_band_4) +
5174             ARRAY_SIZE(iwl4965_eeprom_band_5);
5175
5176         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5177
5178         priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5179                                      priv->channel_count, GFP_KERNEL);
5180         if (!priv->channel_info) {
5181                 IWL_ERROR("Could not allocate channel_info\n");
5182                 priv->channel_count = 0;
5183                 return -ENOMEM;
5184         }
5185
5186         ch_info = priv->channel_info;
5187
5188         /* Loop through the 5 EEPROM bands adding them in order to the
5189          * channel map we maintain (that contains additional information than
5190          * what just in the EEPROM) */
5191         for (band = 1; band <= 5; band++) {
5192
5193                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5194                                         &eeprom_ch_info, &eeprom_ch_index);
5195
5196                 /* Loop through each band adding each of the channels */
5197                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5198                         ch_info->channel = eeprom_ch_index[ch];
5199                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
5200                             IEEE80211_BAND_5GHZ;
5201
5202                         /* permanently store EEPROM's channel regulatory flags
5203                          *   and max power in channel info database. */
5204                         ch_info->eeprom = eeprom_ch_info[ch];
5205
5206                         /* Copy the run-time flags so they are there even on
5207                          * invalid channels */
5208                         ch_info->flags = eeprom_ch_info[ch].flags;
5209
5210                         if (!(is_channel_valid(ch_info))) {
5211                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5212                                                "No traffic\n",
5213                                                ch_info->channel,
5214                                                ch_info->flags,
5215                                                is_channel_a_band(ch_info) ?
5216                                                "5.2" : "2.4");
5217                                 ch_info++;
5218                                 continue;
5219                         }
5220
5221                         /* Initialize regulatory-based run-time data */
5222                         ch_info->max_power_avg = ch_info->curr_txpow =
5223                             eeprom_ch_info[ch].max_power_avg;
5224                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5225                         ch_info->min_power = 0;
5226
5227                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s%s(0x%02x"
5228                                        " %ddBm): Ad-Hoc %ssupported\n",
5229                                        ch_info->channel,
5230                                        is_channel_a_band(ch_info) ?
5231                                        "5.2" : "2.4",
5232                                        CHECK_AND_PRINT(VALID),
5233                                        CHECK_AND_PRINT(IBSS),
5234                                        CHECK_AND_PRINT(ACTIVE),
5235                                        CHECK_AND_PRINT(RADAR),
5236                                        CHECK_AND_PRINT(WIDE),
5237                                        CHECK_AND_PRINT(NARROW),
5238                                        CHECK_AND_PRINT(DFS),
5239                                        eeprom_ch_info[ch].flags,
5240                                        eeprom_ch_info[ch].max_power_avg,
5241                                        ((eeprom_ch_info[ch].
5242                                          flags & EEPROM_CHANNEL_IBSS)
5243                                         && !(eeprom_ch_info[ch].
5244                                              flags & EEPROM_CHANNEL_RADAR))
5245                                        ? "" : "not ");
5246
5247                         /* Set the user_txpower_limit to the highest power
5248                          * supported by any channel */
5249                         if (eeprom_ch_info[ch].max_power_avg >
5250                             priv->user_txpower_limit)
5251                                 priv->user_txpower_limit =
5252                                     eeprom_ch_info[ch].max_power_avg;
5253
5254                         ch_info++;
5255                 }
5256         }
5257
5258         /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5259         for (band = 6; band <= 7; band++) {
5260                 enum ieee80211_band ieeeband;
5261                 u8 fat_extension_chan;
5262
5263                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5264                                         &eeprom_ch_info, &eeprom_ch_index);
5265
5266                 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5267                 ieeeband = (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
5268
5269                 /* Loop through each band adding each of the channels */
5270                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5271
5272                         if ((band == 6) &&
5273                             ((eeprom_ch_index[ch] == 5) ||
5274                             (eeprom_ch_index[ch] == 6) ||
5275                             (eeprom_ch_index[ch] == 7)))
5276                                fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5277                         else
5278                                 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5279
5280                         /* Set up driver's info for lower half */
5281                         iwl4965_set_fat_chan_info(priv, ieeeband,
5282                                                   eeprom_ch_index[ch],
5283                                                   &(eeprom_ch_info[ch]),
5284                                                   fat_extension_chan);
5285
5286                         /* Set up driver's info for upper half */
5287                         iwl4965_set_fat_chan_info(priv, ieeeband,
5288                                                   (eeprom_ch_index[ch] + 4),
5289                                                   &(eeprom_ch_info[ch]),
5290                                                   HT_IE_EXT_CHANNEL_BELOW);
5291                 }
5292         }
5293
5294         return 0;
5295 }
5296
5297 /*
5298  * iwl4965_free_channel_map - undo allocations in iwl4965_init_channel_map
5299  */
5300 static void iwl4965_free_channel_map(struct iwl_priv *priv)
5301 {
5302         kfree(priv->channel_info);
5303         priv->channel_count = 0;
5304 }
5305
5306 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5307  * sending probe req.  This should be set long enough to hear probe responses
5308  * from more than one AP.  */
5309 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5310 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5311
5312 /* For faster active scanning, scan will move to the next channel if fewer than
5313  * PLCP_QUIET_THRESH packets are heard on this channel within
5314  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5315  * time if it's a quiet channel (nothing responded to our probe, and there's
5316  * no other traffic).
5317  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5318 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5319 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5320
5321 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5322  * Must be set longer than active dwell time.
5323  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5324 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5325 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5326 #define IWL_PASSIVE_DWELL_BASE      (100)
5327 #define IWL_CHANNEL_TUNE_TIME       5
5328
5329 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
5330                                                 enum ieee80211_band band)
5331 {
5332         if (band == IEEE80211_BAND_5GHZ)
5333                 return IWL_ACTIVE_DWELL_TIME_52;
5334         else
5335                 return IWL_ACTIVE_DWELL_TIME_24;
5336 }
5337
5338 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
5339                                           enum ieee80211_band band)
5340 {
5341         u16 active = iwl4965_get_active_dwell_time(priv, band);
5342         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
5343             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5344             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5345
5346         if (iwl4965_is_associated(priv)) {
5347                 /* If we're associated, we clamp the maximum passive
5348                  * dwell time to be 98% of the beacon interval (minus
5349                  * 2 * channel tune time) */
5350                 passive = priv->beacon_int;
5351                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5352                         passive = IWL_PASSIVE_DWELL_BASE;
5353                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5354         }
5355
5356         if (passive <= active)
5357                 passive = active + 1;
5358
5359         return passive;
5360 }
5361
5362 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
5363                                          enum ieee80211_band band,
5364                                      u8 is_active, u8 direct_mask,
5365                                      struct iwl4965_scan_channel *scan_ch)
5366 {
5367         const struct ieee80211_channel *channels = NULL;
5368         const struct ieee80211_supported_band *sband;
5369         const struct iwl4965_channel_info *ch_info;
5370         u16 passive_dwell = 0;
5371         u16 active_dwell = 0;
5372         int added, i;
5373
5374         sband = iwl4965_get_hw_mode(priv, band);
5375         if (!sband)
5376                 return 0;
5377
5378         channels = sband->channels;
5379
5380         active_dwell = iwl4965_get_active_dwell_time(priv, band);
5381         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
5382
5383         for (i = 0, added = 0; i < sband->n_channels; i++) {
5384                 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
5385                     le16_to_cpu(priv->active_rxon.channel)) {
5386                         if (iwl4965_is_associated(priv)) {
5387                                 IWL_DEBUG_SCAN
5388                                     ("Skipping current channel %d\n",
5389                                      le16_to_cpu(priv->active_rxon.channel));
5390                                 continue;
5391                         }
5392                 } else if (priv->only_active_channel)
5393                         continue;
5394
5395                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
5396
5397                 ch_info = iwl4965_get_channel_info(priv, band,
5398                                          scan_ch->channel);
5399                 if (!is_channel_valid(ch_info)) {
5400                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5401                                        scan_ch->channel);
5402                         continue;
5403                 }
5404
5405                 if (!is_active || is_channel_passive(ch_info) ||
5406                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
5407                         scan_ch->type = 0;      /* passive */
5408                 else
5409                         scan_ch->type = 1;      /* active */
5410
5411                 if (scan_ch->type & 1)
5412                         scan_ch->type |= (direct_mask << 1);
5413
5414                 if (is_channel_narrow(ch_info))
5415                         scan_ch->type |= (1 << 7);
5416
5417                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5418                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5419
5420                 /* Set txpower levels to defaults */
5421                 scan_ch->tpc.dsp_atten = 110;
5422                 /* scan_pwr_info->tpc.dsp_atten; */
5423
5424                 /*scan_pwr_info->tpc.tx_gain; */
5425                 if (band == IEEE80211_BAND_5GHZ)
5426                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5427                 else {
5428                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5429                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5430                          * power level:
5431                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5432                          */
5433                 }
5434
5435                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5436                                scan_ch->channel,
5437                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5438                                (scan_ch->type & 1) ?
5439                                active_dwell : passive_dwell);
5440
5441                 scan_ch++;
5442                 added++;
5443         }
5444
5445         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5446         return added;
5447 }
5448
5449 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
5450                               struct ieee80211_rate *rates)
5451 {
5452         int i;
5453
5454         for (i = 0; i < IWL_RATE_COUNT; i++) {
5455                 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
5456                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5457                 rates[i].hw_value_short = i;
5458                 rates[i].flags = 0;
5459                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5460                         /*
5461                          * If CCK != 1M then set short preamble rate flag.
5462                          */
5463                         rates[i].flags |=
5464                                 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
5465                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
5466                 }
5467         }
5468 }
5469
5470 /**
5471  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5472  */
5473 static int iwl4965_init_geos(struct iwl_priv *priv)
5474 {
5475         struct iwl4965_channel_info *ch;
5476         struct ieee80211_supported_band *sband;
5477         struct ieee80211_channel *channels;
5478         struct ieee80211_channel *geo_ch;
5479         struct ieee80211_rate *rates;
5480         int i = 0;
5481
5482         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5483             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5484                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5485                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5486                 return 0;
5487         }
5488
5489         channels = kzalloc(sizeof(struct ieee80211_channel) *
5490                            priv->channel_count, GFP_KERNEL);
5491         if (!channels)
5492                 return -ENOMEM;
5493
5494         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5495                         GFP_KERNEL);
5496         if (!rates) {
5497                 kfree(channels);
5498                 return -ENOMEM;
5499         }
5500
5501         /* 5.2GHz channels start after the 2.4GHz channels */
5502         sband = &priv->bands[IEEE80211_BAND_5GHZ];
5503         sband->channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5504         /* just OFDM */
5505         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5506         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5507
5508         iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_5GHZ);
5509
5510         sband = &priv->bands[IEEE80211_BAND_2GHZ];
5511         sband->channels = channels;
5512         /* OFDM & CCK */
5513         sband->bitrates = rates;
5514         sband->n_bitrates = IWL_RATE_COUNT;
5515
5516         iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_2GHZ);
5517
5518         priv->ieee_channels = channels;
5519         priv->ieee_rates = rates;
5520
5521         iwl4965_init_hw_rates(priv, rates);
5522
5523         for (i = 0;  i < priv->channel_count; i++) {
5524                 ch = &priv->channel_info[i];
5525
5526                 /* FIXME: might be removed if scan is OK */
5527                 if (!is_channel_valid(ch))
5528                         continue;
5529
5530                 if (is_channel_a_band(ch))
5531                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
5532                 else
5533                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
5534
5535                 geo_ch = &sband->channels[sband->n_channels++];
5536
5537                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5538                 geo_ch->max_power = ch->max_power_avg;
5539                 geo_ch->max_antenna_gain = 0xff;
5540                 geo_ch->hw_value = ch->channel;
5541
5542                 if (is_channel_valid(ch)) {
5543                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5544                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5545
5546                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5547                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5548
5549                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5550                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5551
5552                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5553                                 priv->max_channel_txpower_limit =
5554                                     ch->max_power_avg;
5555                 } else {
5556                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5557                 }
5558
5559                 /* Save flags for reg domain usage */
5560                 geo_ch->orig_flags = geo_ch->flags;
5561
5562                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5563                                 ch->channel, geo_ch->center_freq,
5564                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
5565                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5566                                 "restricted" : "valid",
5567                                  geo_ch->flags);
5568         }
5569
5570         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
5571              priv->cfg->sku & IWL_SKU_A) {
5572                 printk(KERN_INFO DRV_NAME
5573                        ": Incorrectly detected BG card as ABG.  Please send "
5574                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5575                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5576                 priv->cfg->sku &= ~IWL_SKU_A;
5577         }
5578
5579         printk(KERN_INFO DRV_NAME
5580                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5581                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5582                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5583
5584         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5585         priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5586
5587         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5588
5589         return 0;
5590 }
5591
5592 /*
5593  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5594  */
5595 static void iwl4965_free_geos(struct iwl_priv *priv)
5596 {
5597         kfree(priv->ieee_channels);
5598         kfree(priv->ieee_rates);
5599         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5600 }
5601
5602 /******************************************************************************
5603  *
5604  * uCode download functions
5605  *
5606  ******************************************************************************/
5607
5608 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
5609 {
5610         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5611         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5612         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5613         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5614         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5615         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5616 }
5617
5618 /**
5619  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5620  *     looking at all data.
5621  */
5622 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
5623                                  u32 len)
5624 {
5625         u32 val;
5626         u32 save_len = len;
5627         int rc = 0;
5628         u32 errcnt;
5629
5630         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5631
5632         rc = iwl4965_grab_nic_access(priv);
5633         if (rc)
5634                 return rc;
5635
5636         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5637
5638         errcnt = 0;
5639         for (; len > 0; len -= sizeof(u32), image++) {
5640                 /* read data comes through single port, auto-incr addr */
5641                 /* NOTE: Use the debugless read so we don't flood kernel log
5642                  * if IWL_DL_IO is set */
5643                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5644                 if (val != le32_to_cpu(*image)) {
5645                         IWL_ERROR("uCode INST section is invalid at "
5646                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5647                                   save_len - len, val, le32_to_cpu(*image));
5648                         rc = -EIO;
5649                         errcnt++;
5650                         if (errcnt >= 20)
5651                                 break;
5652                 }
5653         }
5654
5655         iwl4965_release_nic_access(priv);
5656
5657         if (!errcnt)
5658                 IWL_DEBUG_INFO
5659                     ("ucode image in INSTRUCTION memory is good\n");
5660
5661         return rc;
5662 }
5663
5664
5665 /**
5666  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5667  *   using sample data 100 bytes apart.  If these sample points are good,
5668  *   it's a pretty good bet that everything between them is good, too.
5669  */
5670 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5671 {
5672         u32 val;
5673         int rc = 0;
5674         u32 errcnt = 0;
5675         u32 i;
5676
5677         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5678
5679         rc = iwl4965_grab_nic_access(priv);
5680         if (rc)
5681                 return rc;
5682
5683         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5684                 /* read data comes through single port, auto-incr addr */
5685                 /* NOTE: Use the debugless read so we don't flood kernel log
5686                  * if IWL_DL_IO is set */
5687                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5688                         i + RTC_INST_LOWER_BOUND);
5689                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5690                 if (val != le32_to_cpu(*image)) {
5691 #if 0 /* Enable this if you want to see details */
5692                         IWL_ERROR("uCode INST section is invalid at "
5693                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5694                                   i, val, *image);
5695 #endif
5696                         rc = -EIO;
5697                         errcnt++;
5698                         if (errcnt >= 3)
5699                                 break;
5700                 }
5701         }
5702
5703         iwl4965_release_nic_access(priv);
5704
5705         return rc;
5706 }
5707
5708
5709 /**
5710  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5711  *    and verify its contents
5712  */
5713 static int iwl4965_verify_ucode(struct iwl_priv *priv)
5714 {
5715         __le32 *image;
5716         u32 len;
5717         int rc = 0;
5718
5719         /* Try bootstrap */
5720         image = (__le32 *)priv->ucode_boot.v_addr;
5721         len = priv->ucode_boot.len;
5722         rc = iwl4965_verify_inst_sparse(priv, image, len);
5723         if (rc == 0) {
5724                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5725                 return 0;
5726         }
5727
5728         /* Try initialize */
5729         image = (__le32 *)priv->ucode_init.v_addr;
5730         len = priv->ucode_init.len;
5731         rc = iwl4965_verify_inst_sparse(priv, image, len);
5732         if (rc == 0) {
5733                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5734                 return 0;
5735         }
5736
5737         /* Try runtime/protocol */
5738         image = (__le32 *)priv->ucode_code.v_addr;
5739         len = priv->ucode_code.len;
5740         rc = iwl4965_verify_inst_sparse(priv, image, len);
5741         if (rc == 0) {
5742                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5743                 return 0;
5744         }
5745
5746         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5747
5748         /* Since nothing seems to match, show first several data entries in
5749          * instruction SRAM, so maybe visual inspection will give a clue.
5750          * Selection of bootstrap image (vs. other images) is arbitrary. */
5751         image = (__le32 *)priv->ucode_boot.v_addr;
5752         len = priv->ucode_boot.len;
5753         rc = iwl4965_verify_inst_full(priv, image, len);
5754
5755         return rc;
5756 }
5757
5758
5759 /* check contents of special bootstrap uCode SRAM */
5760 static int iwl4965_verify_bsm(struct iwl_priv *priv)
5761 {
5762         __le32 *image = priv->ucode_boot.v_addr;
5763         u32 len = priv->ucode_boot.len;
5764         u32 reg;
5765         u32 val;
5766
5767         IWL_DEBUG_INFO("Begin verify bsm\n");
5768
5769         /* verify BSM SRAM contents */
5770         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
5771         for (reg = BSM_SRAM_LOWER_BOUND;
5772              reg < BSM_SRAM_LOWER_BOUND + len;
5773              reg += sizeof(u32), image ++) {
5774                 val = iwl4965_read_prph(priv, reg);
5775                 if (val != le32_to_cpu(*image)) {
5776                         IWL_ERROR("BSM uCode verification failed at "
5777                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5778                                   BSM_SRAM_LOWER_BOUND,
5779                                   reg - BSM_SRAM_LOWER_BOUND, len,
5780                                   val, le32_to_cpu(*image));
5781                         return -EIO;
5782                 }
5783         }
5784
5785         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5786
5787         return 0;
5788 }
5789
5790 /**
5791  * iwl4965_load_bsm - Load bootstrap instructions
5792  *
5793  * BSM operation:
5794  *
5795  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5796  * in special SRAM that does not power down during RFKILL.  When powering back
5797  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5798  * the bootstrap program into the on-board processor, and starts it.
5799  *
5800  * The bootstrap program loads (via DMA) instructions and data for a new
5801  * program from host DRAM locations indicated by the host driver in the
5802  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5803  * automatically.
5804  *
5805  * When initializing the NIC, the host driver points the BSM to the
5806  * "initialize" uCode image.  This uCode sets up some internal data, then
5807  * notifies host via "initialize alive" that it is complete.
5808  *
5809  * The host then replaces the BSM_DRAM_* pointer values to point to the
5810  * normal runtime uCode instructions and a backup uCode data cache buffer
5811  * (filled initially with starting data values for the on-board processor),
5812  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5813  * which begins normal operation.
5814  *
5815  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5816  * the backup data cache in DRAM before SRAM is powered down.
5817  *
5818  * When powering back up, the BSM loads the bootstrap program.  This reloads
5819  * the runtime uCode instructions and the backup data cache into SRAM,
5820  * and re-launches the runtime uCode from where it left off.
5821  */
5822 static int iwl4965_load_bsm(struct iwl_priv *priv)
5823 {
5824         __le32 *image = priv->ucode_boot.v_addr;
5825         u32 len = priv->ucode_boot.len;
5826         dma_addr_t pinst;
5827         dma_addr_t pdata;
5828         u32 inst_len;
5829         u32 data_len;
5830         int rc;
5831         int i;
5832         u32 done;
5833         u32 reg_offset;
5834
5835         IWL_DEBUG_INFO("Begin load bsm\n");
5836
5837         /* make sure bootstrap program is no larger than BSM's SRAM size */
5838         if (len > IWL_MAX_BSM_SIZE)
5839                 return -EINVAL;
5840
5841         /* Tell bootstrap uCode where to find the "Initialize" uCode
5842          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5843          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
5844          *        after the "initialize" uCode has run, to point to
5845          *        runtime/protocol instructions and backup data cache. */
5846         pinst = priv->ucode_init.p_addr >> 4;
5847         pdata = priv->ucode_init_data.p_addr >> 4;
5848         inst_len = priv->ucode_init.len;
5849         data_len = priv->ucode_init_data.len;
5850
5851         rc = iwl4965_grab_nic_access(priv);
5852         if (rc)
5853                 return rc;
5854
5855         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5856         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5857         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5858         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5859
5860         /* Fill BSM memory with bootstrap instructions */
5861         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5862              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5863              reg_offset += sizeof(u32), image++)
5864                 _iwl4965_write_prph(priv, reg_offset,
5865                                           le32_to_cpu(*image));
5866
5867         rc = iwl4965_verify_bsm(priv);
5868         if (rc) {
5869                 iwl4965_release_nic_access(priv);
5870                 return rc;
5871         }
5872
5873         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5874         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5875         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
5876                                  RTC_INST_LOWER_BOUND);
5877         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5878
5879         /* Load bootstrap code into instruction SRAM now,
5880          *   to prepare to load "initialize" uCode */
5881         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5882                 BSM_WR_CTRL_REG_BIT_START);
5883
5884         /* Wait for load of bootstrap uCode to finish */
5885         for (i = 0; i < 100; i++) {
5886                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
5887                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5888                         break;
5889                 udelay(10);
5890         }
5891         if (i < 100)
5892                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5893         else {
5894                 IWL_ERROR("BSM write did not complete!\n");
5895                 return -EIO;
5896         }
5897
5898         /* Enable future boot loads whenever power management unit triggers it
5899          *   (e.g. when powering back up after power-save shutdown) */
5900         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5901                 BSM_WR_CTRL_REG_BIT_START_EN);
5902
5903         iwl4965_release_nic_access(priv);
5904
5905         return 0;
5906 }
5907
5908 static void iwl4965_nic_start(struct iwl_priv *priv)
5909 {
5910         /* Remove all resets to allow NIC to operate */
5911         iwl4965_write32(priv, CSR_RESET, 0);
5912 }
5913
5914
5915 /**
5916  * iwl4965_read_ucode - Read uCode images from disk file.
5917  *
5918  * Copy into buffers for card to fetch via bus-mastering
5919  */
5920 static int iwl4965_read_ucode(struct iwl_priv *priv)
5921 {
5922         struct iwl4965_ucode *ucode;
5923         int ret;
5924         const struct firmware *ucode_raw;
5925         const char *name = priv->cfg->fw_name;
5926         u8 *src;
5927         size_t len;
5928         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5929
5930         /* Ask kernel firmware_class module to get the boot firmware off disk.
5931          * request_firmware() is synchronous, file is in memory on return. */
5932         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5933         if (ret < 0) {
5934                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5935                                         name, ret);
5936                 goto error;
5937         }
5938
5939         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5940                        name, ucode_raw->size);
5941
5942         /* Make sure that we got at least our header! */
5943         if (ucode_raw->size < sizeof(*ucode)) {
5944                 IWL_ERROR("File size way too small!\n");
5945                 ret = -EINVAL;
5946                 goto err_release;
5947         }
5948
5949         /* Data from ucode file:  header followed by uCode images */
5950         ucode = (void *)ucode_raw->data;
5951
5952         ver = le32_to_cpu(ucode->ver);
5953         inst_size = le32_to_cpu(ucode->inst_size);
5954         data_size = le32_to_cpu(ucode->data_size);
5955         init_size = le32_to_cpu(ucode->init_size);
5956         init_data_size = le32_to_cpu(ucode->init_data_size);
5957         boot_size = le32_to_cpu(ucode->boot_size);
5958
5959         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5960         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5961                        inst_size);
5962         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5963                        data_size);
5964         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5965                        init_size);
5966         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5967                        init_data_size);
5968         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5969                        boot_size);
5970
5971         /* Verify size of file vs. image size info in file's header */
5972         if (ucode_raw->size < sizeof(*ucode) +
5973                 inst_size + data_size + init_size +
5974                 init_data_size + boot_size) {
5975
5976                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5977                                (int)ucode_raw->size);
5978                 ret = -EINVAL;
5979                 goto err_release;
5980         }
5981
5982         /* Verify that uCode images will fit in card's SRAM */
5983         if (inst_size > IWL_MAX_INST_SIZE) {
5984                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5985                                inst_size);
5986                 ret = -EINVAL;
5987                 goto err_release;
5988         }
5989
5990         if (data_size > IWL_MAX_DATA_SIZE) {
5991                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5992                                 data_size);
5993                 ret = -EINVAL;
5994                 goto err_release;
5995         }
5996         if (init_size > IWL_MAX_INST_SIZE) {
5997                 IWL_DEBUG_INFO
5998                     ("uCode init instr len %d too large to fit in\n",
5999                       init_size);
6000                 ret = -EINVAL;
6001                 goto err_release;
6002         }
6003         if (init_data_size > IWL_MAX_DATA_SIZE) {
6004                 IWL_DEBUG_INFO
6005                     ("uCode init data len %d too large to fit in\n",
6006                       init_data_size);
6007                 ret = -EINVAL;
6008                 goto err_release;
6009         }
6010         if (boot_size > IWL_MAX_BSM_SIZE) {
6011                 IWL_DEBUG_INFO
6012                     ("uCode boot instr len %d too large to fit in\n",
6013                       boot_size);
6014                 ret = -EINVAL;
6015                 goto err_release;
6016         }
6017
6018         /* Allocate ucode buffers for card's bus-master loading ... */
6019
6020         /* Runtime instructions and 2 copies of data:
6021          * 1) unmodified from disk
6022          * 2) backup cache for save/restore during power-downs */
6023         priv->ucode_code.len = inst_size;
6024         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6025
6026         priv->ucode_data.len = data_size;
6027         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6028
6029         priv->ucode_data_backup.len = data_size;
6030         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6031
6032         /* Initialization instructions and data */
6033         if (init_size && init_data_size) {
6034                 priv->ucode_init.len = init_size;
6035                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6036
6037                 priv->ucode_init_data.len = init_data_size;
6038                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6039
6040                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6041                         goto err_pci_alloc;
6042         }
6043
6044         /* Bootstrap (instructions only, no data) */
6045         if (boot_size) {
6046                 priv->ucode_boot.len = boot_size;
6047                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6048
6049                 if (!priv->ucode_boot.v_addr)
6050                         goto err_pci_alloc;
6051         }
6052
6053         /* Copy images into buffers for card's bus-master reads ... */
6054
6055         /* Runtime instructions (first block of data in file) */
6056         src = &ucode->data[0];
6057         len = priv->ucode_code.len;
6058         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6059         memcpy(priv->ucode_code.v_addr, src, len);
6060         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6061                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6062
6063         /* Runtime data (2nd block)
6064          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
6065         src = &ucode->data[inst_size];
6066         len = priv->ucode_data.len;
6067         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6068         memcpy(priv->ucode_data.v_addr, src, len);
6069         memcpy(priv->ucode_data_backup.v_addr, src, len);
6070
6071         /* Initialization instructions (3rd block) */
6072         if (init_size) {
6073                 src = &ucode->data[inst_size + data_size];
6074                 len = priv->ucode_init.len;
6075                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6076                                 len);
6077                 memcpy(priv->ucode_init.v_addr, src, len);
6078         }
6079
6080         /* Initialization data (4th block) */
6081         if (init_data_size) {
6082                 src = &ucode->data[inst_size + data_size + init_size];
6083                 len = priv->ucode_init_data.len;
6084                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6085                                len);
6086                 memcpy(priv->ucode_init_data.v_addr, src, len);
6087         }
6088
6089         /* Bootstrap instructions (5th block) */
6090         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6091         len = priv->ucode_boot.len;
6092         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6093         memcpy(priv->ucode_boot.v_addr, src, len);
6094
6095         /* We have our copies now, allow OS release its copies */
6096         release_firmware(ucode_raw);
6097         return 0;
6098
6099  err_pci_alloc:
6100         IWL_ERROR("failed to allocate pci memory\n");
6101         ret = -ENOMEM;
6102         iwl4965_dealloc_ucode_pci(priv);
6103
6104  err_release:
6105         release_firmware(ucode_raw);
6106
6107  error:
6108         return ret;
6109 }
6110
6111
6112 /**
6113  * iwl4965_set_ucode_ptrs - Set uCode address location
6114  *
6115  * Tell initialization uCode where to find runtime uCode.
6116  *
6117  * BSM registers initially contain pointers to initialization uCode.
6118  * We need to replace them to load runtime uCode inst and data,
6119  * and to save runtime data when powering down.
6120  */
6121 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
6122 {
6123         dma_addr_t pinst;
6124         dma_addr_t pdata;
6125         int rc = 0;
6126         unsigned long flags;
6127
6128         /* bits 35:4 for 4965 */
6129         pinst = priv->ucode_code.p_addr >> 4;
6130         pdata = priv->ucode_data_backup.p_addr >> 4;
6131
6132         spin_lock_irqsave(&priv->lock, flags);
6133         rc = iwl4965_grab_nic_access(priv);
6134         if (rc) {
6135                 spin_unlock_irqrestore(&priv->lock, flags);
6136                 return rc;
6137         }
6138
6139         /* Tell bootstrap uCode where to find image to load */
6140         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6141         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6142         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6143                                  priv->ucode_data.len);
6144
6145         /* Inst bytecount must be last to set up, bit 31 signals uCode
6146          *   that all new ptr/size info is in place */
6147         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6148                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6149
6150         iwl4965_release_nic_access(priv);
6151
6152         spin_unlock_irqrestore(&priv->lock, flags);
6153
6154         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6155
6156         return rc;
6157 }
6158
6159 /**
6160  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6161  *
6162  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6163  *
6164  * The 4965 "initialize" ALIVE reply contains calibration data for:
6165  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
6166  *   (3945 does not contain this data).
6167  *
6168  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6169 */
6170 static void iwl4965_init_alive_start(struct iwl_priv *priv)
6171 {
6172         /* Check alive response for "valid" sign from uCode */
6173         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6174                 /* We had an error bringing up the hardware, so take it
6175                  * all the way back down so we can try again */
6176                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6177                 goto restart;
6178         }
6179
6180         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6181          * This is a paranoid check, because we would not have gotten the
6182          * "initialize" alive if code weren't properly loaded.  */
6183         if (iwl4965_verify_ucode(priv)) {
6184                 /* Runtime instruction load was bad;
6185                  * take it all the way back down so we can try again */
6186                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6187                 goto restart;
6188         }
6189
6190         /* Calculate temperature */
6191         priv->temperature = iwl4965_get_temperature(priv);
6192
6193         /* Send pointers to protocol/runtime uCode image ... init code will
6194          * load and launch runtime uCode, which will send us another "Alive"
6195          * notification. */
6196         IWL_DEBUG_INFO("Initialization Alive received.\n");
6197         if (iwl4965_set_ucode_ptrs(priv)) {
6198                 /* Runtime instruction load won't happen;
6199                  * take it all the way back down so we can try again */
6200                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6201                 goto restart;
6202         }
6203         return;
6204
6205  restart:
6206         queue_work(priv->workqueue, &priv->restart);
6207 }
6208
6209
6210 /**
6211  * iwl4965_alive_start - called after REPLY_ALIVE notification received
6212  *                   from protocol/runtime uCode (initialization uCode's
6213  *                   Alive gets handled by iwl4965_init_alive_start()).
6214  */
6215 static void iwl4965_alive_start(struct iwl_priv *priv)
6216 {
6217         int rc = 0;
6218
6219         IWL_DEBUG_INFO("Runtime Alive received.\n");
6220
6221         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6222                 /* We had an error bringing up the hardware, so take it
6223                  * all the way back down so we can try again */
6224                 IWL_DEBUG_INFO("Alive failed.\n");
6225                 goto restart;
6226         }
6227
6228         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6229          * This is a paranoid check, because we would not have gotten the
6230          * "runtime" alive if code weren't properly loaded.  */
6231         if (iwl4965_verify_ucode(priv)) {
6232                 /* Runtime instruction load was bad;
6233                  * take it all the way back down so we can try again */
6234                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6235                 goto restart;
6236         }
6237
6238         iwl4965_clear_stations_table(priv);
6239
6240         rc = iwl4965_alive_notify(priv);
6241         if (rc) {
6242                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6243                             rc);
6244                 goto restart;
6245         }
6246
6247         /* After the ALIVE response, we can send host commands to 4965 uCode */
6248         set_bit(STATUS_ALIVE, &priv->status);
6249
6250         /* Clear out the uCode error bit if it is set */
6251         clear_bit(STATUS_FW_ERROR, &priv->status);
6252
6253         if (iwl4965_is_rfkill(priv))
6254                 return;
6255
6256         ieee80211_start_queues(priv->hw);
6257
6258         priv->active_rate = priv->rates_mask;
6259         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6260
6261         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6262
6263         if (iwl4965_is_associated(priv)) {
6264                 struct iwl4965_rxon_cmd *active_rxon =
6265                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6266
6267                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6268                        sizeof(priv->staging_rxon));
6269                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6270         } else {
6271                 /* Initialize our rx_config data */
6272                 iwl4965_connection_init_rx_config(priv);
6273                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6274         }
6275
6276         /* Configure Bluetooth device coexistence support */
6277         iwl4965_send_bt_config(priv);
6278
6279         /* Configure the adapter for unassociated operation */
6280         iwl4965_commit_rxon(priv);
6281
6282         /* At this point, the NIC is initialized and operational */
6283         priv->notif_missed_beacons = 0;
6284         set_bit(STATUS_READY, &priv->status);
6285
6286         iwl4965_rf_kill_ct_config(priv);
6287
6288         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6289         wake_up_interruptible(&priv->wait_command_queue);
6290
6291         if (priv->error_recovering)
6292                 iwl4965_error_recovery(priv);
6293
6294         return;
6295
6296  restart:
6297         queue_work(priv->workqueue, &priv->restart);
6298 }
6299
6300 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
6301
6302 static void __iwl4965_down(struct iwl_priv *priv)
6303 {
6304         unsigned long flags;
6305         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6306         struct ieee80211_conf *conf = NULL;
6307
6308         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6309
6310         conf = ieee80211_get_hw_conf(priv->hw);
6311
6312         if (!exit_pending)
6313                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6314
6315         iwl4965_clear_stations_table(priv);
6316
6317         /* Unblock any waiting calls */
6318         wake_up_interruptible_all(&priv->wait_command_queue);
6319
6320         /* Wipe out the EXIT_PENDING status bit if we are not actually
6321          * exiting the module */
6322         if (!exit_pending)
6323                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6324
6325         /* stop and reset the on-board processor */
6326         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6327
6328         /* tell the device to stop sending interrupts */
6329         iwl4965_disable_interrupts(priv);
6330
6331         if (priv->mac80211_registered)
6332                 ieee80211_stop_queues(priv->hw);
6333
6334         /* If we have not previously called iwl4965_init() then
6335          * clear all bits but the RF Kill and SUSPEND bits and return */
6336         if (!iwl4965_is_init(priv)) {
6337                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6338                                         STATUS_RF_KILL_HW |
6339                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6340                                         STATUS_RF_KILL_SW |
6341                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6342                                         STATUS_GEO_CONFIGURED |
6343                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6344                                         STATUS_IN_SUSPEND;
6345                 goto exit;
6346         }
6347
6348         /* ...otherwise clear out all the status bits but the RF Kill and
6349          * SUSPEND bits and continue taking the NIC down. */
6350         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6351                                 STATUS_RF_KILL_HW |
6352                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6353                                 STATUS_RF_KILL_SW |
6354                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6355                                 STATUS_GEO_CONFIGURED |
6356                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6357                                 STATUS_IN_SUSPEND |
6358                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6359                                 STATUS_FW_ERROR;
6360
6361         spin_lock_irqsave(&priv->lock, flags);
6362         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6363                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6364         spin_unlock_irqrestore(&priv->lock, flags);
6365
6366         iwl4965_hw_txq_ctx_stop(priv);
6367         iwl4965_hw_rxq_stop(priv);
6368
6369         spin_lock_irqsave(&priv->lock, flags);
6370         if (!iwl4965_grab_nic_access(priv)) {
6371                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6372                                          APMG_CLK_VAL_DMA_CLK_RQT);
6373                 iwl4965_release_nic_access(priv);
6374         }
6375         spin_unlock_irqrestore(&priv->lock, flags);
6376
6377         udelay(5);
6378
6379         iwl4965_hw_nic_stop_master(priv);
6380         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6381         iwl4965_hw_nic_reset(priv);
6382
6383  exit:
6384         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6385
6386         if (priv->ibss_beacon)
6387                 dev_kfree_skb(priv->ibss_beacon);
6388         priv->ibss_beacon = NULL;
6389
6390         /* clear out any free frames */
6391         iwl4965_clear_free_frames(priv);
6392 }
6393
6394 static void iwl4965_down(struct iwl_priv *priv)
6395 {
6396         mutex_lock(&priv->mutex);
6397         __iwl4965_down(priv);
6398         mutex_unlock(&priv->mutex);
6399
6400         iwl4965_cancel_deferred_work(priv);
6401 }
6402
6403 #define MAX_HW_RESTARTS 5
6404
6405 static int __iwl4965_up(struct iwl_priv *priv)
6406 {
6407         int rc, i;
6408
6409         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6410                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6411                 return -EIO;
6412         }
6413
6414         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6415                 IWL_WARNING("Radio disabled by SW RF kill (module "
6416                             "parameter)\n");
6417                 return -ENODEV;
6418         }
6419
6420         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6421                 IWL_ERROR("ucode not available for device bringup\n");
6422                 return -EIO;
6423         }
6424
6425         /* If platform's RF_KILL switch is NOT set to KILL */
6426         if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6427                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6428                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6429         else {
6430                 set_bit(STATUS_RF_KILL_HW, &priv->status);
6431                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6432                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6433                         return -ENODEV;
6434                 }
6435         }
6436
6437         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6438
6439         rc = iwl4965_hw_nic_init(priv);
6440         if (rc) {
6441                 IWL_ERROR("Unable to int nic\n");
6442                 return rc;
6443         }
6444
6445         /* make sure rfkill handshake bits are cleared */
6446         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6447         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6448                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6449
6450         /* clear (again), then enable host interrupts */
6451         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6452         iwl4965_enable_interrupts(priv);
6453
6454         /* really make sure rfkill handshake bits are cleared */
6455         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6456         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6457
6458         /* Copy original ucode data image from disk into backup cache.
6459          * This will be used to initialize the on-board processor's
6460          * data SRAM for a clean start when the runtime program first loads. */
6461         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6462                priv->ucode_data.len);
6463
6464         /* We return success when we resume from suspend and rf_kill is on. */
6465         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6466                 return 0;
6467
6468         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6469
6470                 iwl4965_clear_stations_table(priv);
6471
6472                 /* load bootstrap state machine,
6473                  * load bootstrap program into processor's memory,
6474                  * prepare to load the "initialize" uCode */
6475                 rc = iwl4965_load_bsm(priv);
6476
6477                 if (rc) {
6478                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6479                         continue;
6480                 }
6481
6482                 /* start card; "initialize" will load runtime ucode */
6483                 iwl4965_nic_start(priv);
6484
6485                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6486
6487                 return 0;
6488         }
6489
6490         set_bit(STATUS_EXIT_PENDING, &priv->status);
6491         __iwl4965_down(priv);
6492
6493         /* tried to restart and config the device for as long as our
6494          * patience could withstand */
6495         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6496         return -EIO;
6497 }
6498
6499
6500 /*****************************************************************************
6501  *
6502  * Workqueue callbacks
6503  *
6504  *****************************************************************************/
6505
6506 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6507 {
6508         struct iwl_priv *priv =
6509             container_of(data, struct iwl_priv, init_alive_start.work);
6510
6511         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6512                 return;
6513
6514         mutex_lock(&priv->mutex);
6515         iwl4965_init_alive_start(priv);
6516         mutex_unlock(&priv->mutex);
6517 }
6518
6519 static void iwl4965_bg_alive_start(struct work_struct *data)
6520 {
6521         struct iwl_priv *priv =
6522             container_of(data, struct iwl_priv, alive_start.work);
6523
6524         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6525                 return;
6526
6527         mutex_lock(&priv->mutex);
6528         iwl4965_alive_start(priv);
6529         mutex_unlock(&priv->mutex);
6530 }
6531
6532 static void iwl4965_bg_rf_kill(struct work_struct *work)
6533 {
6534         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6535
6536         wake_up_interruptible(&priv->wait_command_queue);
6537
6538         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6539                 return;
6540
6541         mutex_lock(&priv->mutex);
6542
6543         if (!iwl4965_is_rfkill(priv)) {
6544                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6545                           "HW and/or SW RF Kill no longer active, restarting "
6546                           "device\n");
6547                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6548                         queue_work(priv->workqueue, &priv->restart);
6549         } else {
6550
6551                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6552                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6553                                           "disabled by SW switch\n");
6554                 else
6555                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6556                                     "Kill switch must be turned off for "
6557                                     "wireless networking to work.\n");
6558         }
6559         mutex_unlock(&priv->mutex);
6560 }
6561
6562 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6563
6564 static void iwl4965_bg_scan_check(struct work_struct *data)
6565 {
6566         struct iwl_priv *priv =
6567             container_of(data, struct iwl_priv, scan_check.work);
6568
6569         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6570                 return;
6571
6572         mutex_lock(&priv->mutex);
6573         if (test_bit(STATUS_SCANNING, &priv->status) ||
6574             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6575                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6576                           "Scan completion watchdog resetting adapter (%dms)\n",
6577                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6578
6579                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6580                         iwl4965_send_scan_abort(priv);
6581         }
6582         mutex_unlock(&priv->mutex);
6583 }
6584
6585 static void iwl4965_bg_request_scan(struct work_struct *data)
6586 {
6587         struct iwl_priv *priv =
6588             container_of(data, struct iwl_priv, request_scan);
6589         struct iwl4965_host_cmd cmd = {
6590                 .id = REPLY_SCAN_CMD,
6591                 .len = sizeof(struct iwl4965_scan_cmd),
6592                 .meta.flags = CMD_SIZE_HUGE,
6593         };
6594         int rc = 0;
6595         struct iwl4965_scan_cmd *scan;
6596         struct ieee80211_conf *conf = NULL;
6597         u16 cmd_len;
6598         enum ieee80211_band band;
6599         u8 direct_mask;
6600
6601         conf = ieee80211_get_hw_conf(priv->hw);
6602
6603         mutex_lock(&priv->mutex);
6604
6605         if (!iwl4965_is_ready(priv)) {
6606                 IWL_WARNING("request scan called when driver not ready.\n");
6607                 goto done;
6608         }
6609
6610         /* Make sure the scan wasn't cancelled before this queued work
6611          * was given the chance to run... */
6612         if (!test_bit(STATUS_SCANNING, &priv->status))
6613                 goto done;
6614
6615         /* This should never be called or scheduled if there is currently
6616          * a scan active in the hardware. */
6617         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6618                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6619                                "Ignoring second request.\n");
6620                 rc = -EIO;
6621                 goto done;
6622         }
6623
6624         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6625                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6626                 goto done;
6627         }
6628
6629         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6630                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6631                 goto done;
6632         }
6633
6634         if (iwl4965_is_rfkill(priv)) {
6635                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6636                 goto done;
6637         }
6638
6639         if (!test_bit(STATUS_READY, &priv->status)) {
6640                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6641                 goto done;
6642         }
6643
6644         if (!priv->scan_bands) {
6645                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6646                 goto done;
6647         }
6648
6649         if (!priv->scan) {
6650                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6651                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6652                 if (!priv->scan) {
6653                         rc = -ENOMEM;
6654                         goto done;
6655                 }
6656         }
6657         scan = priv->scan;
6658         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6659
6660         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6661         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6662
6663         if (iwl4965_is_associated(priv)) {
6664                 u16 interval = 0;
6665                 u32 extra;
6666                 u32 suspend_time = 100;
6667                 u32 scan_suspend_time = 100;
6668                 unsigned long flags;
6669
6670                 IWL_DEBUG_INFO("Scanning while associated...\n");
6671
6672                 spin_lock_irqsave(&priv->lock, flags);
6673                 interval = priv->beacon_int;
6674                 spin_unlock_irqrestore(&priv->lock, flags);
6675
6676                 scan->suspend_time = 0;
6677                 scan->max_out_time = cpu_to_le32(200 * 1024);
6678                 if (!interval)
6679                         interval = suspend_time;
6680
6681                 extra = (suspend_time / interval) << 22;
6682                 scan_suspend_time = (extra |
6683                     ((suspend_time % interval) * 1024));
6684                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6685                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6686                                scan_suspend_time, interval);
6687         }
6688
6689         /* We should add the ability for user to lock to PASSIVE ONLY */
6690         if (priv->one_direct_scan) {
6691                 IWL_DEBUG_SCAN
6692                     ("Kicking off one direct scan for '%s'\n",
6693                      iwl4965_escape_essid(priv->direct_ssid,
6694                                       priv->direct_ssid_len));
6695                 scan->direct_scan[0].id = WLAN_EID_SSID;
6696                 scan->direct_scan[0].len = priv->direct_ssid_len;
6697                 memcpy(scan->direct_scan[0].ssid,
6698                        priv->direct_ssid, priv->direct_ssid_len);
6699                 direct_mask = 1;
6700         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6701                 scan->direct_scan[0].id = WLAN_EID_SSID;
6702                 scan->direct_scan[0].len = priv->essid_len;
6703                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6704                 direct_mask = 1;
6705         } else
6706                 direct_mask = 0;
6707
6708         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6709         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6710         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6711
6712
6713         switch (priv->scan_bands) {
6714         case 2:
6715                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6716                 scan->tx_cmd.rate_n_flags =
6717                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6718                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6719
6720                 scan->good_CRC_th = 0;
6721                 band = IEEE80211_BAND_2GHZ;
6722                 break;
6723
6724         case 1:
6725                 scan->tx_cmd.rate_n_flags =
6726                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6727                                 RATE_MCS_ANT_B_MSK);
6728                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6729                 band = IEEE80211_BAND_5GHZ;
6730                 break;
6731
6732         default:
6733                 IWL_WARNING("Invalid scan band count\n");
6734                 goto done;
6735         }
6736
6737         /* We don't build a direct scan probe request; the uCode will do
6738          * that based on the direct_mask added to each channel entry */
6739         cmd_len = iwl4965_fill_probe_req(priv, band,
6740                                         (struct ieee80211_mgmt *)scan->data,
6741                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6742
6743         scan->tx_cmd.len = cpu_to_le16(cmd_len);
6744         /* select Rx chains */
6745
6746         /* Force use of chains B and C (0x6) for scan Rx.
6747          * Avoid A (0x1) because of its off-channel reception on A-band.
6748          * MIMO is not used here, but value is required to make uCode happy. */
6749         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6750                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6751                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6752                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6753
6754         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6755                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6756
6757         if (direct_mask) {
6758                 IWL_DEBUG_SCAN
6759                     ("Initiating direct scan for %s.\n",
6760                      iwl4965_escape_essid(priv->essid, priv->essid_len));
6761                 scan->channel_count =
6762                         iwl4965_get_channels_for_scan(
6763                                 priv, band, 1, /* active */
6764                                 direct_mask,
6765                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6766         } else {
6767                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6768                 scan->channel_count =
6769                         iwl4965_get_channels_for_scan(
6770                                 priv, band, 0, /* passive */
6771                                 direct_mask,
6772                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6773         }
6774
6775         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6776             scan->channel_count * sizeof(struct iwl4965_scan_channel);
6777         cmd.data = scan;
6778         scan->len = cpu_to_le16(cmd.len);
6779
6780         set_bit(STATUS_SCAN_HW, &priv->status);
6781         rc = iwl4965_send_cmd_sync(priv, &cmd);
6782         if (rc)
6783                 goto done;
6784
6785         queue_delayed_work(priv->workqueue, &priv->scan_check,
6786                            IWL_SCAN_CHECK_WATCHDOG);
6787
6788         mutex_unlock(&priv->mutex);
6789         return;
6790
6791  done:
6792         /* inform mac80211 scan aborted */
6793         queue_work(priv->workqueue, &priv->scan_completed);
6794         mutex_unlock(&priv->mutex);
6795 }
6796
6797 static void iwl4965_bg_up(struct work_struct *data)
6798 {
6799         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6800
6801         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6802                 return;
6803
6804         mutex_lock(&priv->mutex);
6805         __iwl4965_up(priv);
6806         mutex_unlock(&priv->mutex);
6807 }
6808
6809 static void iwl4965_bg_restart(struct work_struct *data)
6810 {
6811         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6812
6813         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6814                 return;
6815
6816         iwl4965_down(priv);
6817         queue_work(priv->workqueue, &priv->up);
6818 }
6819
6820 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6821 {
6822         struct iwl_priv *priv =
6823             container_of(data, struct iwl_priv, rx_replenish);
6824
6825         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6826                 return;
6827
6828         mutex_lock(&priv->mutex);
6829         iwl4965_rx_replenish(priv);
6830         mutex_unlock(&priv->mutex);
6831 }
6832
6833 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6834
6835 static void iwl4965_bg_post_associate(struct work_struct *data)
6836 {
6837         struct iwl_priv *priv = container_of(data, struct iwl_priv,
6838                                              post_associate.work);
6839
6840         int rc = 0;
6841         struct ieee80211_conf *conf = NULL;
6842         DECLARE_MAC_BUF(mac);
6843
6844         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6845                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6846                 return;
6847         }
6848
6849         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6850                         priv->assoc_id,
6851                         print_mac(mac, priv->active_rxon.bssid_addr));
6852
6853
6854         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6855                 return;
6856
6857         mutex_lock(&priv->mutex);
6858
6859         if (!priv->vif || !priv->is_open) {
6860                 mutex_unlock(&priv->mutex);
6861                 return;
6862         }
6863         iwl4965_scan_cancel_timeout(priv, 200);
6864
6865         conf = ieee80211_get_hw_conf(priv->hw);
6866
6867         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6868         iwl4965_commit_rxon(priv);
6869
6870         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6871         iwl4965_setup_rxon_timing(priv);
6872         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6873                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6874         if (rc)
6875                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6876                             "Attempting to continue.\n");
6877
6878         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6879
6880 #ifdef CONFIG_IWL4965_HT
6881         if (priv->current_ht_config.is_ht)
6882                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6883 #endif /* CONFIG_IWL4965_HT*/
6884         iwl4965_set_rxon_chain(priv);
6885         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6886
6887         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6888                         priv->assoc_id, priv->beacon_int);
6889
6890         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6891                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6892         else
6893                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6894
6895         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6896                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6897                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6898                 else
6899                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6900
6901                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6902                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6903
6904         }
6905
6906         iwl4965_commit_rxon(priv);
6907
6908         switch (priv->iw_mode) {
6909         case IEEE80211_IF_TYPE_STA:
6910                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6911                 break;
6912
6913         case IEEE80211_IF_TYPE_IBSS:
6914
6915                 /* clear out the station table */
6916                 iwl4965_clear_stations_table(priv);
6917
6918                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6919                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6920                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6921                 iwl4965_send_beacon_cmd(priv);
6922
6923                 break;
6924
6925         default:
6926                 IWL_ERROR("%s Should not be called in %d mode\n",
6927                                 __FUNCTION__, priv->iw_mode);
6928                 break;
6929         }
6930
6931         iwl4965_sequence_reset(priv);
6932
6933 #ifdef CONFIG_IWL4965_SENSITIVITY
6934         /* Enable Rx differential gain and sensitivity calibrations */
6935         iwl4965_chain_noise_reset(priv);
6936         priv->start_calib = 1;
6937 #endif /* CONFIG_IWL4965_SENSITIVITY */
6938
6939         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6940                 priv->assoc_station_added = 1;
6941
6942         iwl4965_activate_qos(priv, 0);
6943
6944         /* we have just associated, don't start scan too early */
6945         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6946         mutex_unlock(&priv->mutex);
6947 }
6948
6949 static void iwl4965_bg_abort_scan(struct work_struct *work)
6950 {
6951         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6952
6953         if (!iwl4965_is_ready(priv))
6954                 return;
6955
6956         mutex_lock(&priv->mutex);
6957
6958         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6959         iwl4965_send_scan_abort(priv);
6960
6961         mutex_unlock(&priv->mutex);
6962 }
6963
6964 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6965
6966 static void iwl4965_bg_scan_completed(struct work_struct *work)
6967 {
6968         struct iwl_priv *priv =
6969             container_of(work, struct iwl_priv, scan_completed);
6970
6971         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6972
6973         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6974                 return;
6975
6976         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6977                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6978
6979         ieee80211_scan_completed(priv->hw);
6980
6981         /* Since setting the TXPOWER may have been deferred while
6982          * performing the scan, fire one off */
6983         mutex_lock(&priv->mutex);
6984         iwl4965_hw_reg_send_txpower(priv);
6985         mutex_unlock(&priv->mutex);
6986 }
6987
6988 /*****************************************************************************
6989  *
6990  * mac80211 entry point functions
6991  *
6992  *****************************************************************************/
6993
6994 #define UCODE_READY_TIMEOUT     (2 * HZ)
6995
6996 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6997 {
6998         struct iwl_priv *priv = hw->priv;
6999         int ret;
7000
7001         IWL_DEBUG_MAC80211("enter\n");
7002
7003         if (pci_enable_device(priv->pci_dev)) {
7004                 IWL_ERROR("Fail to pci_enable_device\n");
7005                 return -ENODEV;
7006         }
7007         pci_restore_state(priv->pci_dev);
7008         pci_enable_msi(priv->pci_dev);
7009
7010         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7011                           DRV_NAME, priv);
7012         if (ret) {
7013                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7014                 goto out_disable_msi;
7015         }
7016
7017         /* we should be verifying the device is ready to be opened */
7018         mutex_lock(&priv->mutex);
7019
7020         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7021         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7022          * ucode filename and max sizes are card-specific. */
7023
7024         if (!priv->ucode_code.len) {
7025                 ret = iwl4965_read_ucode(priv);
7026                 if (ret) {
7027                         IWL_ERROR("Could not read microcode: %d\n", ret);
7028                         mutex_unlock(&priv->mutex);
7029                         goto out_release_irq;
7030                 }
7031         }
7032
7033         ret = __iwl4965_up(priv);
7034
7035         mutex_unlock(&priv->mutex);
7036
7037         if (ret)
7038                 goto out_release_irq;
7039
7040         IWL_DEBUG_INFO("Start UP work done.\n");
7041
7042         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7043                 return 0;
7044
7045         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
7046          * mac80211 will not be run successfully. */
7047         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7048                         test_bit(STATUS_READY, &priv->status),
7049                         UCODE_READY_TIMEOUT);
7050         if (!ret) {
7051                 if (!test_bit(STATUS_READY, &priv->status)) {
7052                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7053                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
7054                         ret = -ETIMEDOUT;
7055                         goto out_release_irq;
7056                 }
7057         }
7058
7059         priv->is_open = 1;
7060         IWL_DEBUG_MAC80211("leave\n");
7061         return 0;
7062
7063 out_release_irq:
7064         free_irq(priv->pci_dev->irq, priv);
7065 out_disable_msi:
7066         pci_disable_msi(priv->pci_dev);
7067         pci_disable_device(priv->pci_dev);
7068         priv->is_open = 0;
7069         IWL_DEBUG_MAC80211("leave - failed\n");
7070         return ret;
7071 }
7072
7073 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7074 {
7075         struct iwl_priv *priv = hw->priv;
7076
7077         IWL_DEBUG_MAC80211("enter\n");
7078
7079         if (!priv->is_open) {
7080                 IWL_DEBUG_MAC80211("leave - skip\n");
7081                 return;
7082         }
7083
7084         priv->is_open = 0;
7085
7086         if (iwl4965_is_ready_rf(priv)) {
7087                 /* stop mac, cancel any scan request and clear
7088                  * RXON_FILTER_ASSOC_MSK BIT
7089                  */
7090                 mutex_lock(&priv->mutex);
7091                 iwl4965_scan_cancel_timeout(priv, 100);
7092                 cancel_delayed_work(&priv->post_associate);
7093                 mutex_unlock(&priv->mutex);
7094         }
7095
7096         iwl4965_down(priv);
7097
7098         flush_workqueue(priv->workqueue);
7099         free_irq(priv->pci_dev->irq, priv);
7100         pci_disable_msi(priv->pci_dev);
7101         pci_save_state(priv->pci_dev);
7102         pci_disable_device(priv->pci_dev);
7103
7104         IWL_DEBUG_MAC80211("leave\n");
7105 }
7106
7107 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7108                       struct ieee80211_tx_control *ctl)
7109 {
7110         struct iwl_priv *priv = hw->priv;
7111
7112         IWL_DEBUG_MAC80211("enter\n");
7113
7114         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7115                 IWL_DEBUG_MAC80211("leave - monitor\n");
7116                 return -1;
7117         }
7118
7119         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7120                      ctl->tx_rate->bitrate);
7121
7122         if (iwl4965_tx_skb(priv, skb, ctl))
7123                 dev_kfree_skb_any(skb);
7124
7125         IWL_DEBUG_MAC80211("leave\n");
7126         return 0;
7127 }
7128
7129 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7130                                  struct ieee80211_if_init_conf *conf)
7131 {
7132         struct iwl_priv *priv = hw->priv;
7133         unsigned long flags;
7134         DECLARE_MAC_BUF(mac);
7135
7136         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
7137
7138         if (priv->vif) {
7139                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
7140                 return -EOPNOTSUPP;
7141         }
7142
7143         spin_lock_irqsave(&priv->lock, flags);
7144         priv->vif = conf->vif;
7145
7146         spin_unlock_irqrestore(&priv->lock, flags);
7147
7148         mutex_lock(&priv->mutex);
7149
7150         if (conf->mac_addr) {
7151                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7152                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7153         }
7154
7155         if (iwl4965_is_ready(priv))
7156                 iwl4965_set_mode(priv, conf->type);
7157
7158         mutex_unlock(&priv->mutex);
7159
7160         IWL_DEBUG_MAC80211("leave\n");
7161         return 0;
7162 }
7163
7164 /**
7165  * iwl4965_mac_config - mac80211 config callback
7166  *
7167  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7168  * be set inappropriately and the driver currently sets the hardware up to
7169  * use it whenever needed.
7170  */
7171 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7172 {
7173         struct iwl_priv *priv = hw->priv;
7174         const struct iwl4965_channel_info *ch_info;
7175         unsigned long flags;
7176         int ret = 0;
7177
7178         mutex_lock(&priv->mutex);
7179         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
7180
7181         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7182
7183         if (!iwl4965_is_ready(priv)) {
7184                 IWL_DEBUG_MAC80211("leave - not ready\n");
7185                 ret = -EIO;
7186                 goto out;
7187         }
7188
7189         if (unlikely(!iwl4965_param_disable_hw_scan &&
7190                      test_bit(STATUS_SCANNING, &priv->status))) {
7191                 IWL_DEBUG_MAC80211("leave - scanning\n");
7192                 set_bit(STATUS_CONF_PENDING, &priv->status);
7193                 mutex_unlock(&priv->mutex);
7194                 return 0;
7195         }
7196
7197         spin_lock_irqsave(&priv->lock, flags);
7198
7199         ch_info = iwl4965_get_channel_info(priv, conf->channel->band,
7200                         ieee80211_frequency_to_channel(conf->channel->center_freq));
7201         if (!is_channel_valid(ch_info)) {
7202                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7203                 spin_unlock_irqrestore(&priv->lock, flags);
7204                 ret = -EINVAL;
7205                 goto out;
7206         }
7207
7208 #ifdef CONFIG_IWL4965_HT
7209         /* if we are switching from ht to 2.4 clear flags
7210          * from any ht related info since 2.4 does not
7211          * support ht */
7212         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
7213 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7214             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7215 #endif
7216         )
7217                 priv->staging_rxon.flags = 0;
7218 #endif /* CONFIG_IWL4965_HT */
7219
7220         iwl4965_set_rxon_channel(priv, conf->channel->band,
7221                 ieee80211_frequency_to_channel(conf->channel->center_freq));
7222
7223         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
7224
7225         /* The list of supported rates and rate mask can be different
7226          * for each band; since the band may have changed, reset
7227          * the rate mask to what mac80211 lists */
7228         iwl4965_set_rate(priv);
7229
7230         spin_unlock_irqrestore(&priv->lock, flags);
7231
7232 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7233         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7234                 iwl4965_hw_channel_switch(priv, conf->channel);
7235                 goto out;
7236         }
7237 #endif
7238
7239         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7240
7241         if (!conf->radio_enabled) {
7242                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7243                 goto out;
7244         }
7245
7246         if (iwl4965_is_rfkill(priv)) {
7247                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7248                 ret = -EIO;
7249                 goto out;
7250         }
7251
7252         iwl4965_set_rate(priv);
7253
7254         if (memcmp(&priv->active_rxon,
7255                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7256                 iwl4965_commit_rxon(priv);
7257         else
7258                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7259
7260         IWL_DEBUG_MAC80211("leave\n");
7261
7262 out:
7263         clear_bit(STATUS_CONF_PENDING, &priv->status);
7264         mutex_unlock(&priv->mutex);
7265         return ret;
7266 }
7267
7268 static void iwl4965_config_ap(struct iwl_priv *priv)
7269 {
7270         int rc = 0;
7271
7272         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7273                 return;
7274
7275         /* The following should be done only at AP bring up */
7276         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7277
7278                 /* RXON - unassoc (to set timing command) */
7279                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7280                 iwl4965_commit_rxon(priv);
7281
7282                 /* RXON Timing */
7283                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7284                 iwl4965_setup_rxon_timing(priv);
7285                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7286                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7287                 if (rc)
7288                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7289                                         "Attempting to continue.\n");
7290
7291                 iwl4965_set_rxon_chain(priv);
7292
7293                 /* FIXME: what should be the assoc_id for AP? */
7294                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7295                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7296                         priv->staging_rxon.flags |=
7297                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7298                 else
7299                         priv->staging_rxon.flags &=
7300                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7301
7302                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7303                         if (priv->assoc_capability &
7304                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7305                                 priv->staging_rxon.flags |=
7306                                         RXON_FLG_SHORT_SLOT_MSK;
7307                         else
7308                                 priv->staging_rxon.flags &=
7309                                         ~RXON_FLG_SHORT_SLOT_MSK;
7310
7311                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7312                                 priv->staging_rxon.flags &=
7313                                         ~RXON_FLG_SHORT_SLOT_MSK;
7314                 }
7315                 /* restore RXON assoc */
7316                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7317                 iwl4965_commit_rxon(priv);
7318                 iwl4965_activate_qos(priv, 1);
7319                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7320         }
7321         iwl4965_send_beacon_cmd(priv);
7322
7323         /* FIXME - we need to add code here to detect a totally new
7324          * configuration, reset the AP, unassoc, rxon timing, assoc,
7325          * clear sta table, add BCAST sta... */
7326 }
7327
7328 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
7329                                         struct ieee80211_vif *vif,
7330                                     struct ieee80211_if_conf *conf)
7331 {
7332         struct iwl_priv *priv = hw->priv;
7333         DECLARE_MAC_BUF(mac);
7334         unsigned long flags;
7335         int rc;
7336
7337         if (conf == NULL)
7338                 return -EIO;
7339
7340         if (priv->vif != vif) {
7341                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7342                 mutex_unlock(&priv->mutex);
7343                 return 0;
7344         }
7345
7346         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7347             (!conf->beacon || !conf->ssid_len)) {
7348                 IWL_DEBUG_MAC80211
7349                     ("Leaving in AP mode because HostAPD is not ready.\n");
7350                 return 0;
7351         }
7352
7353         if (!iwl4965_is_alive(priv))
7354                 return -EAGAIN;
7355
7356         mutex_lock(&priv->mutex);
7357
7358         if (conf->bssid)
7359                 IWL_DEBUG_MAC80211("bssid: %s\n",
7360                                    print_mac(mac, conf->bssid));
7361
7362 /*
7363  * very dubious code was here; the probe filtering flag is never set:
7364  *
7365         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7366             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7367  */
7368
7369         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7370                 if (!conf->bssid) {
7371                         conf->bssid = priv->mac_addr;
7372                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7373                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7374                                            print_mac(mac, conf->bssid));
7375                 }
7376                 if (priv->ibss_beacon)
7377                         dev_kfree_skb(priv->ibss_beacon);
7378
7379                 priv->ibss_beacon = conf->beacon;
7380         }
7381
7382         if (iwl4965_is_rfkill(priv))
7383                 goto done;
7384
7385         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7386             !is_multicast_ether_addr(conf->bssid)) {
7387                 /* If there is currently a HW scan going on in the background
7388                  * then we need to cancel it else the RXON below will fail. */
7389                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7390                         IWL_WARNING("Aborted scan still in progress "
7391                                     "after 100ms\n");
7392                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7393                         mutex_unlock(&priv->mutex);
7394                         return -EAGAIN;
7395                 }
7396                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7397
7398                 /* TODO: Audit driver for usage of these members and see
7399                  * if mac80211 deprecates them (priv->bssid looks like it
7400                  * shouldn't be there, but I haven't scanned the IBSS code
7401                  * to verify) - jpk */
7402                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7403
7404                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7405                         iwl4965_config_ap(priv);
7406                 else {
7407                         rc = iwl4965_commit_rxon(priv);
7408                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7409                                 iwl4965_rxon_add_station(
7410                                         priv, priv->active_rxon.bssid_addr, 1);
7411                 }
7412
7413         } else {
7414                 iwl4965_scan_cancel_timeout(priv, 100);
7415                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7416                 iwl4965_commit_rxon(priv);
7417         }
7418
7419  done:
7420         spin_lock_irqsave(&priv->lock, flags);
7421         if (!conf->ssid_len)
7422                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7423         else
7424                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7425
7426         priv->essid_len = conf->ssid_len;
7427         spin_unlock_irqrestore(&priv->lock, flags);
7428
7429         IWL_DEBUG_MAC80211("leave\n");
7430         mutex_unlock(&priv->mutex);
7431
7432         return 0;
7433 }
7434
7435 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7436                                  unsigned int changed_flags,
7437                                  unsigned int *total_flags,
7438                                  int mc_count, struct dev_addr_list *mc_list)
7439 {
7440         /*
7441          * XXX: dummy
7442          * see also iwl4965_connection_init_rx_config
7443          */
7444         *total_flags = 0;
7445 }
7446
7447 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7448                                      struct ieee80211_if_init_conf *conf)
7449 {
7450         struct iwl_priv *priv = hw->priv;
7451
7452         IWL_DEBUG_MAC80211("enter\n");
7453
7454         mutex_lock(&priv->mutex);
7455
7456         if (iwl4965_is_ready_rf(priv)) {
7457                 iwl4965_scan_cancel_timeout(priv, 100);
7458                 cancel_delayed_work(&priv->post_associate);
7459                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7460                 iwl4965_commit_rxon(priv);
7461         }
7462         if (priv->vif == conf->vif) {
7463                 priv->vif = NULL;
7464                 memset(priv->bssid, 0, ETH_ALEN);
7465                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7466                 priv->essid_len = 0;
7467         }
7468         mutex_unlock(&priv->mutex);
7469
7470         IWL_DEBUG_MAC80211("leave\n");
7471
7472 }
7473
7474 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
7475                                      struct ieee80211_vif *vif,
7476                                      struct ieee80211_bss_conf *bss_conf,
7477                                      u32 changes)
7478 {
7479         struct iwl_priv *priv = hw->priv;
7480
7481         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
7482                 if (bss_conf->use_short_preamble)
7483                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7484                 else
7485                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7486         }
7487
7488         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
7489                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
7490                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7491                 else
7492                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7493         }
7494
7495         if (changes & BSS_CHANGED_ASSOC) {
7496                 /*
7497                  * TODO:
7498                  * do stuff instead of sniffing assoc resp
7499                  */
7500         }
7501
7502         if (iwl4965_is_associated(priv))
7503                 iwl4965_send_rxon_assoc(priv);
7504 }
7505
7506 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7507 {
7508         int rc = 0;
7509         unsigned long flags;
7510         struct iwl_priv *priv = hw->priv;
7511
7512         IWL_DEBUG_MAC80211("enter\n");
7513
7514         mutex_lock(&priv->mutex);
7515         spin_lock_irqsave(&priv->lock, flags);
7516
7517         if (!iwl4965_is_ready_rf(priv)) {
7518                 rc = -EIO;
7519                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7520                 goto out_unlock;
7521         }
7522
7523         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7524                 rc = -EIO;
7525                 IWL_ERROR("ERROR: APs don't scan\n");
7526                 goto out_unlock;
7527         }
7528
7529         /* we don't schedule scan within next_scan_jiffies period */
7530         if (priv->next_scan_jiffies &&
7531                         time_after(priv->next_scan_jiffies, jiffies)) {
7532                 rc = -EAGAIN;
7533                 goto out_unlock;
7534         }
7535         /* if we just finished scan ask for delay */
7536         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7537                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
7538                 rc = -EAGAIN;
7539                 goto out_unlock;
7540         }
7541         if (len) {
7542                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7543                                iwl4965_escape_essid(ssid, len), (int)len);
7544
7545                 priv->one_direct_scan = 1;
7546                 priv->direct_ssid_len = (u8)
7547                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7548                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7549         } else
7550                 priv->one_direct_scan = 0;
7551
7552         rc = iwl4965_scan_initiate(priv);
7553
7554         IWL_DEBUG_MAC80211("leave\n");
7555
7556 out_unlock:
7557         spin_unlock_irqrestore(&priv->lock, flags);
7558         mutex_unlock(&priv->mutex);
7559
7560         return rc;
7561 }
7562
7563 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7564                            const u8 *local_addr, const u8 *addr,
7565                            struct ieee80211_key_conf *key)
7566 {
7567         struct iwl_priv *priv = hw->priv;
7568         DECLARE_MAC_BUF(mac);
7569         int rc = 0;
7570         u8 sta_id;
7571
7572         IWL_DEBUG_MAC80211("enter\n");
7573
7574         if (!iwl4965_param_hwcrypto) {
7575                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7576                 return -EOPNOTSUPP;
7577         }
7578
7579         if (is_zero_ether_addr(addr))
7580                 /* only support pairwise keys */
7581                 return -EOPNOTSUPP;
7582
7583         sta_id = iwl4965_hw_find_station(priv, addr);
7584         if (sta_id == IWL_INVALID_STATION) {
7585                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7586                                    print_mac(mac, addr));
7587                 return -EINVAL;
7588         }
7589
7590         mutex_lock(&priv->mutex);
7591
7592         iwl4965_scan_cancel_timeout(priv, 100);
7593
7594         switch (cmd) {
7595         case  SET_KEY:
7596                 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7597                 if (!rc) {
7598                         iwl4965_set_rxon_hwcrypto(priv, 1);
7599                         iwl4965_commit_rxon(priv);
7600                         key->hw_key_idx = sta_id;
7601                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7602                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7603                 }
7604                 break;
7605         case DISABLE_KEY:
7606                 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7607                 if (!rc) {
7608                         iwl4965_set_rxon_hwcrypto(priv, 0);
7609                         iwl4965_commit_rxon(priv);
7610                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7611                 }
7612                 break;
7613         default:
7614                 rc = -EINVAL;
7615         }
7616
7617         IWL_DEBUG_MAC80211("leave\n");
7618         mutex_unlock(&priv->mutex);
7619
7620         return rc;
7621 }
7622
7623 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7624                            const struct ieee80211_tx_queue_params *params)
7625 {
7626         struct iwl_priv *priv = hw->priv;
7627         unsigned long flags;
7628         int q;
7629
7630         IWL_DEBUG_MAC80211("enter\n");
7631
7632         if (!iwl4965_is_ready_rf(priv)) {
7633                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7634                 return -EIO;
7635         }
7636
7637         if (queue >= AC_NUM) {
7638                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7639                 return 0;
7640         }
7641
7642         if (!priv->qos_data.qos_enable) {
7643                 priv->qos_data.qos_active = 0;
7644                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7645                 return 0;
7646         }
7647         q = AC_NUM - 1 - queue;
7648
7649         spin_lock_irqsave(&priv->lock, flags);
7650
7651         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7652         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7653         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7654         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7655                         cpu_to_le16((params->txop * 32));
7656
7657         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7658         priv->qos_data.qos_active = 1;
7659
7660         spin_unlock_irqrestore(&priv->lock, flags);
7661
7662         mutex_lock(&priv->mutex);
7663         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7664                 iwl4965_activate_qos(priv, 1);
7665         else if (priv->assoc_id && iwl4965_is_associated(priv))
7666                 iwl4965_activate_qos(priv, 0);
7667
7668         mutex_unlock(&priv->mutex);
7669
7670         IWL_DEBUG_MAC80211("leave\n");
7671         return 0;
7672 }
7673
7674 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7675                                 struct ieee80211_tx_queue_stats *stats)
7676 {
7677         struct iwl_priv *priv = hw->priv;
7678         int i, avail;
7679         struct iwl4965_tx_queue *txq;
7680         struct iwl4965_queue *q;
7681         unsigned long flags;
7682
7683         IWL_DEBUG_MAC80211("enter\n");
7684
7685         if (!iwl4965_is_ready_rf(priv)) {
7686                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7687                 return -EIO;
7688         }
7689
7690         spin_lock_irqsave(&priv->lock, flags);
7691
7692         for (i = 0; i < AC_NUM; i++) {
7693                 txq = &priv->txq[i];
7694                 q = &txq->q;
7695                 avail = iwl4965_queue_space(q);
7696
7697                 stats->data[i].len = q->n_window - avail;
7698                 stats->data[i].limit = q->n_window - q->high_mark;
7699                 stats->data[i].count = q->n_window;
7700
7701         }
7702         spin_unlock_irqrestore(&priv->lock, flags);
7703
7704         IWL_DEBUG_MAC80211("leave\n");
7705
7706         return 0;
7707 }
7708
7709 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7710                              struct ieee80211_low_level_stats *stats)
7711 {
7712         IWL_DEBUG_MAC80211("enter\n");
7713         IWL_DEBUG_MAC80211("leave\n");
7714
7715         return 0;
7716 }
7717
7718 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7719 {
7720         IWL_DEBUG_MAC80211("enter\n");
7721         IWL_DEBUG_MAC80211("leave\n");
7722
7723         return 0;
7724 }
7725
7726 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7727 {
7728         struct iwl_priv *priv = hw->priv;
7729         unsigned long flags;
7730
7731         mutex_lock(&priv->mutex);
7732         IWL_DEBUG_MAC80211("enter\n");
7733
7734         priv->lq_mngr.lq_ready = 0;
7735 #ifdef CONFIG_IWL4965_HT
7736         spin_lock_irqsave(&priv->lock, flags);
7737         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7738         spin_unlock_irqrestore(&priv->lock, flags);
7739 #endif /* CONFIG_IWL4965_HT */
7740
7741         iwl4965_reset_qos(priv);
7742
7743         cancel_delayed_work(&priv->post_associate);
7744
7745         spin_lock_irqsave(&priv->lock, flags);
7746         priv->assoc_id = 0;
7747         priv->assoc_capability = 0;
7748         priv->call_post_assoc_from_beacon = 0;
7749         priv->assoc_station_added = 0;
7750
7751         /* new association get rid of ibss beacon skb */
7752         if (priv->ibss_beacon)
7753                 dev_kfree_skb(priv->ibss_beacon);
7754
7755         priv->ibss_beacon = NULL;
7756
7757         priv->beacon_int = priv->hw->conf.beacon_int;
7758         priv->timestamp1 = 0;
7759         priv->timestamp0 = 0;
7760         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7761                 priv->beacon_int = 0;
7762
7763         spin_unlock_irqrestore(&priv->lock, flags);
7764
7765         if (!iwl4965_is_ready_rf(priv)) {
7766                 IWL_DEBUG_MAC80211("leave - not ready\n");
7767                 mutex_unlock(&priv->mutex);
7768                 return;
7769         }
7770
7771         /* we are restarting association process
7772          * clear RXON_FILTER_ASSOC_MSK bit
7773          */
7774         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7775                 iwl4965_scan_cancel_timeout(priv, 100);
7776                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7777                 iwl4965_commit_rxon(priv);
7778         }
7779
7780         /* Per mac80211.h: This is only used in IBSS mode... */
7781         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7782
7783                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7784                 mutex_unlock(&priv->mutex);
7785                 return;
7786         }
7787
7788         priv->only_active_channel = 0;
7789
7790         iwl4965_set_rate(priv);
7791
7792         mutex_unlock(&priv->mutex);
7793
7794         IWL_DEBUG_MAC80211("leave\n");
7795 }
7796
7797 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7798                                  struct ieee80211_tx_control *control)
7799 {
7800         struct iwl_priv *priv = hw->priv;
7801         unsigned long flags;
7802
7803         mutex_lock(&priv->mutex);
7804         IWL_DEBUG_MAC80211("enter\n");
7805
7806         if (!iwl4965_is_ready_rf(priv)) {
7807                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7808                 mutex_unlock(&priv->mutex);
7809                 return -EIO;
7810         }
7811
7812         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7813                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7814                 mutex_unlock(&priv->mutex);
7815                 return -EIO;
7816         }
7817
7818         spin_lock_irqsave(&priv->lock, flags);
7819
7820         if (priv->ibss_beacon)
7821                 dev_kfree_skb(priv->ibss_beacon);
7822
7823         priv->ibss_beacon = skb;
7824
7825         priv->assoc_id = 0;
7826
7827         IWL_DEBUG_MAC80211("leave\n");
7828         spin_unlock_irqrestore(&priv->lock, flags);
7829
7830         iwl4965_reset_qos(priv);
7831
7832         queue_work(priv->workqueue, &priv->post_associate.work);
7833
7834         mutex_unlock(&priv->mutex);
7835
7836         return 0;
7837 }
7838
7839 #ifdef CONFIG_IWL4965_HT
7840
7841 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7842                                  struct iwl_priv *priv)
7843 {
7844         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7845         struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7846         struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7847
7848         IWL_DEBUG_MAC80211("enter: \n");
7849
7850         if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7851                 iwl_conf->is_ht = 0;
7852                 return;
7853         }
7854
7855         iwl_conf->is_ht = 1;
7856         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7857
7858         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7859                 iwl_conf->sgf |= 0x1;
7860         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7861                 iwl_conf->sgf |= 0x2;
7862
7863         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7864         iwl_conf->max_amsdu_size =
7865                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7866
7867         iwl_conf->supported_chan_width =
7868                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7869         iwl_conf->extension_chan_offset =
7870                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7871         /* If no above or below channel supplied disable FAT channel */
7872         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7873             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7874                 iwl_conf->supported_chan_width = 0;
7875
7876         iwl_conf->tx_mimo_ps_mode =
7877                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7878         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7879
7880         iwl_conf->control_channel = ht_bss_conf->primary_channel;
7881         iwl_conf->tx_chan_width =
7882                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7883         iwl_conf->ht_protection =
7884                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7885         iwl_conf->non_GF_STA_present =
7886                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7887
7888         IWL_DEBUG_MAC80211("control channel %d\n",
7889                 iwl_conf->control_channel);
7890         IWL_DEBUG_MAC80211("leave\n");
7891 }
7892
7893 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7894                                struct ieee80211_conf *conf)
7895 {
7896         struct iwl_priv *priv = hw->priv;
7897
7898         IWL_DEBUG_MAC80211("enter: \n");
7899
7900         iwl4965_ht_info_fill(conf, priv);
7901         iwl4965_set_rxon_chain(priv);
7902
7903         if (priv && priv->assoc_id &&
7904             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
7905                 unsigned long flags;
7906
7907                 spin_lock_irqsave(&priv->lock, flags);
7908                 if (priv->beacon_int)
7909                         queue_work(priv->workqueue, &priv->post_associate.work);
7910                 else
7911                         priv->call_post_assoc_from_beacon = 1;
7912                 spin_unlock_irqrestore(&priv->lock, flags);
7913         }
7914
7915         IWL_DEBUG_MAC80211("leave:\n");
7916         return 0;
7917 }
7918
7919 #endif /*CONFIG_IWL4965_HT*/
7920
7921 /*****************************************************************************
7922  *
7923  * sysfs attributes
7924  *
7925  *****************************************************************************/
7926
7927 #ifdef CONFIG_IWLWIFI_DEBUG
7928
7929 /*
7930  * The following adds a new attribute to the sysfs representation
7931  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7932  * used for controlling the debug level.
7933  *
7934  * See the level definitions in iwl for details.
7935  */
7936
7937 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7938 {
7939         return sprintf(buf, "0x%08X\n", iwl_debug_level);
7940 }
7941 static ssize_t store_debug_level(struct device_driver *d,
7942                                  const char *buf, size_t count)
7943 {
7944         char *p = (char *)buf;
7945         u32 val;
7946
7947         val = simple_strtoul(p, &p, 0);
7948         if (p == buf)
7949                 printk(KERN_INFO DRV_NAME
7950                        ": %s is not in hex or decimal form.\n", buf);
7951         else
7952                 iwl_debug_level = val;
7953
7954         return strnlen(buf, count);
7955 }
7956
7957 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7958                    show_debug_level, store_debug_level);
7959
7960 #endif /* CONFIG_IWLWIFI_DEBUG */
7961
7962 static ssize_t show_rf_kill(struct device *d,
7963                             struct device_attribute *attr, char *buf)
7964 {
7965         /*
7966          * 0 - RF kill not enabled
7967          * 1 - SW based RF kill active (sysfs)
7968          * 2 - HW based RF kill active
7969          * 3 - Both HW and SW based RF kill active
7970          */
7971         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7972         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7973                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7974
7975         return sprintf(buf, "%i\n", val);
7976 }
7977
7978 static ssize_t store_rf_kill(struct device *d,
7979                              struct device_attribute *attr,
7980                              const char *buf, size_t count)
7981 {
7982         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7983
7984         mutex_lock(&priv->mutex);
7985         iwl4965_radio_kill_sw(priv, buf[0] == '1');
7986         mutex_unlock(&priv->mutex);
7987
7988         return count;
7989 }
7990
7991 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7992
7993 static ssize_t show_temperature(struct device *d,
7994                                 struct device_attribute *attr, char *buf)
7995 {
7996         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7997
7998         if (!iwl4965_is_alive(priv))
7999                 return -EAGAIN;
8000
8001         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8002 }
8003
8004 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8005
8006 static ssize_t show_rs_window(struct device *d,
8007                               struct device_attribute *attr,
8008                               char *buf)
8009 {
8010         struct iwl_priv *priv = d->driver_data;
8011         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8012 }
8013 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8014
8015 static ssize_t show_tx_power(struct device *d,
8016                              struct device_attribute *attr, char *buf)
8017 {
8018         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8019         return sprintf(buf, "%d\n", priv->user_txpower_limit);
8020 }
8021
8022 static ssize_t store_tx_power(struct device *d,
8023                               struct device_attribute *attr,
8024                               const char *buf, size_t count)
8025 {
8026         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8027         char *p = (char *)buf;
8028         u32 val;
8029
8030         val = simple_strtoul(p, &p, 10);
8031         if (p == buf)
8032                 printk(KERN_INFO DRV_NAME
8033                        ": %s is not in decimal form.\n", buf);
8034         else
8035                 iwl4965_hw_reg_set_txpower(priv, val);
8036
8037         return count;
8038 }
8039
8040 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8041
8042 static ssize_t show_flags(struct device *d,
8043                           struct device_attribute *attr, char *buf)
8044 {
8045         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8046
8047         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8048 }
8049
8050 static ssize_t store_flags(struct device *d,
8051                            struct device_attribute *attr,
8052                            const char *buf, size_t count)
8053 {
8054         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8055         u32 flags = simple_strtoul(buf, NULL, 0);
8056
8057         mutex_lock(&priv->mutex);
8058         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8059                 /* Cancel any currently running scans... */
8060                 if (iwl4965_scan_cancel_timeout(priv, 100))
8061                         IWL_WARNING("Could not cancel scan.\n");
8062                 else {
8063                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8064                                        flags);
8065                         priv->staging_rxon.flags = cpu_to_le32(flags);
8066                         iwl4965_commit_rxon(priv);
8067                 }
8068         }
8069         mutex_unlock(&priv->mutex);
8070
8071         return count;
8072 }
8073
8074 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8075
8076 static ssize_t show_filter_flags(struct device *d,
8077                                  struct device_attribute *attr, char *buf)
8078 {
8079         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8080
8081         return sprintf(buf, "0x%04X\n",
8082                 le32_to_cpu(priv->active_rxon.filter_flags));
8083 }
8084
8085 static ssize_t store_filter_flags(struct device *d,
8086                                   struct device_attribute *attr,
8087                                   const char *buf, size_t count)
8088 {
8089         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8090         u32 filter_flags = simple_strtoul(buf, NULL, 0);
8091
8092         mutex_lock(&priv->mutex);
8093         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8094                 /* Cancel any currently running scans... */
8095                 if (iwl4965_scan_cancel_timeout(priv, 100))
8096                         IWL_WARNING("Could not cancel scan.\n");
8097                 else {
8098                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8099                                        "0x%04X\n", filter_flags);
8100                         priv->staging_rxon.filter_flags =
8101                                 cpu_to_le32(filter_flags);
8102                         iwl4965_commit_rxon(priv);
8103                 }
8104         }
8105         mutex_unlock(&priv->mutex);
8106
8107         return count;
8108 }
8109
8110 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8111                    store_filter_flags);
8112
8113 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8114
8115 static ssize_t show_measurement(struct device *d,
8116                                 struct device_attribute *attr, char *buf)
8117 {
8118         struct iwl_priv *priv = dev_get_drvdata(d);
8119         struct iwl4965_spectrum_notification measure_report;
8120         u32 size = sizeof(measure_report), len = 0, ofs = 0;
8121         u8 *data = (u8 *) & measure_report;
8122         unsigned long flags;
8123
8124         spin_lock_irqsave(&priv->lock, flags);
8125         if (!(priv->measurement_status & MEASUREMENT_READY)) {
8126                 spin_unlock_irqrestore(&priv->lock, flags);
8127                 return 0;
8128         }
8129         memcpy(&measure_report, &priv->measure_report, size);
8130         priv->measurement_status = 0;
8131         spin_unlock_irqrestore(&priv->lock, flags);
8132
8133         while (size && (PAGE_SIZE - len)) {
8134                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8135                                    PAGE_SIZE - len, 1);
8136                 len = strlen(buf);
8137                 if (PAGE_SIZE - len)
8138                         buf[len++] = '\n';
8139
8140                 ofs += 16;
8141                 size -= min(size, 16U);
8142         }
8143
8144         return len;
8145 }
8146
8147 static ssize_t store_measurement(struct device *d,
8148                                  struct device_attribute *attr,
8149                                  const char *buf, size_t count)
8150 {
8151         struct iwl_priv *priv = dev_get_drvdata(d);
8152         struct ieee80211_measurement_params params = {
8153                 .channel = le16_to_cpu(priv->active_rxon.channel),
8154                 .start_time = cpu_to_le64(priv->last_tsf),
8155                 .duration = cpu_to_le16(1),
8156         };
8157         u8 type = IWL_MEASURE_BASIC;
8158         u8 buffer[32];
8159         u8 channel;
8160
8161         if (count) {
8162                 char *p = buffer;
8163                 strncpy(buffer, buf, min(sizeof(buffer), count));
8164                 channel = simple_strtoul(p, NULL, 0);
8165                 if (channel)
8166                         params.channel = channel;
8167
8168                 p = buffer;
8169                 while (*p && *p != ' ')
8170                         p++;
8171                 if (*p)
8172                         type = simple_strtoul(p + 1, NULL, 0);
8173         }
8174
8175         IWL_DEBUG_INFO("Invoking measurement of type %d on "
8176                        "channel %d (for '%s')\n", type, params.channel, buf);
8177         iwl4965_get_measurement(priv, &params, type);
8178
8179         return count;
8180 }
8181
8182 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8183                    show_measurement, store_measurement);
8184 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8185
8186 static ssize_t store_retry_rate(struct device *d,
8187                                 struct device_attribute *attr,
8188                                 const char *buf, size_t count)
8189 {
8190         struct iwl_priv *priv = dev_get_drvdata(d);
8191
8192         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8193         if (priv->retry_rate <= 0)
8194                 priv->retry_rate = 1;
8195
8196         return count;
8197 }
8198
8199 static ssize_t show_retry_rate(struct device *d,
8200                                struct device_attribute *attr, char *buf)
8201 {
8202         struct iwl_priv *priv = dev_get_drvdata(d);
8203         return sprintf(buf, "%d", priv->retry_rate);
8204 }
8205
8206 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8207                    store_retry_rate);
8208
8209 static ssize_t store_power_level(struct device *d,
8210                                  struct device_attribute *attr,
8211                                  const char *buf, size_t count)
8212 {
8213         struct iwl_priv *priv = dev_get_drvdata(d);
8214         int rc;
8215         int mode;
8216
8217         mode = simple_strtoul(buf, NULL, 0);
8218         mutex_lock(&priv->mutex);
8219
8220         if (!iwl4965_is_ready(priv)) {
8221                 rc = -EAGAIN;
8222                 goto out;
8223         }
8224
8225         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8226                 mode = IWL_POWER_AC;
8227         else
8228                 mode |= IWL_POWER_ENABLED;
8229
8230         if (mode != priv->power_mode) {
8231                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8232                 if (rc) {
8233                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8234                         goto out;
8235                 }
8236                 priv->power_mode = mode;
8237         }
8238
8239         rc = count;
8240
8241  out:
8242         mutex_unlock(&priv->mutex);
8243         return rc;
8244 }
8245
8246 #define MAX_WX_STRING 80
8247
8248 /* Values are in microsecond */
8249 static const s32 timeout_duration[] = {
8250         350000,
8251         250000,
8252         75000,
8253         37000,
8254         25000,
8255 };
8256 static const s32 period_duration[] = {
8257         400000,
8258         700000,
8259         1000000,
8260         1000000,
8261         1000000
8262 };
8263
8264 static ssize_t show_power_level(struct device *d,
8265                                 struct device_attribute *attr, char *buf)
8266 {
8267         struct iwl_priv *priv = dev_get_drvdata(d);
8268         int level = IWL_POWER_LEVEL(priv->power_mode);
8269         char *p = buf;
8270
8271         p += sprintf(p, "%d ", level);
8272         switch (level) {
8273         case IWL_POWER_MODE_CAM:
8274         case IWL_POWER_AC:
8275                 p += sprintf(p, "(AC)");
8276                 break;
8277         case IWL_POWER_BATTERY:
8278                 p += sprintf(p, "(BATTERY)");
8279                 break;
8280         default:
8281                 p += sprintf(p,
8282                              "(Timeout %dms, Period %dms)",
8283                              timeout_duration[level - 1] / 1000,
8284                              period_duration[level - 1] / 1000);
8285         }
8286
8287         if (!(priv->power_mode & IWL_POWER_ENABLED))
8288                 p += sprintf(p, " OFF\n");
8289         else
8290                 p += sprintf(p, " \n");
8291
8292         return (p - buf + 1);
8293
8294 }
8295
8296 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8297                    store_power_level);
8298
8299 static ssize_t show_channels(struct device *d,
8300                              struct device_attribute *attr, char *buf)
8301 {
8302         /* all this shit doesn't belong into sysfs anyway */
8303         return 0;
8304 }
8305
8306 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8307
8308 static ssize_t show_statistics(struct device *d,
8309                                struct device_attribute *attr, char *buf)
8310 {
8311         struct iwl_priv *priv = dev_get_drvdata(d);
8312         u32 size = sizeof(struct iwl4965_notif_statistics);
8313         u32 len = 0, ofs = 0;
8314         u8 *data = (u8 *) & priv->statistics;
8315         int rc = 0;
8316
8317         if (!iwl4965_is_alive(priv))
8318                 return -EAGAIN;
8319
8320         mutex_lock(&priv->mutex);
8321         rc = iwl4965_send_statistics_request(priv);
8322         mutex_unlock(&priv->mutex);
8323
8324         if (rc) {
8325                 len = sprintf(buf,
8326                               "Error sending statistics request: 0x%08X\n", rc);
8327                 return len;
8328         }
8329
8330         while (size && (PAGE_SIZE - len)) {
8331                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8332                                    PAGE_SIZE - len, 1);
8333                 len = strlen(buf);
8334                 if (PAGE_SIZE - len)
8335                         buf[len++] = '\n';
8336
8337                 ofs += 16;
8338                 size -= min(size, 16U);
8339         }
8340
8341         return len;
8342 }
8343
8344 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8345
8346 static ssize_t show_antenna(struct device *d,
8347                             struct device_attribute *attr, char *buf)
8348 {
8349         struct iwl_priv *priv = dev_get_drvdata(d);
8350
8351         if (!iwl4965_is_alive(priv))
8352                 return -EAGAIN;
8353
8354         return sprintf(buf, "%d\n", priv->antenna);
8355 }
8356
8357 static ssize_t store_antenna(struct device *d,
8358                              struct device_attribute *attr,
8359                              const char *buf, size_t count)
8360 {
8361         int ant;
8362         struct iwl_priv *priv = dev_get_drvdata(d);
8363
8364         if (count == 0)
8365                 return 0;
8366
8367         if (sscanf(buf, "%1i", &ant) != 1) {
8368                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8369                 return count;
8370         }
8371
8372         if ((ant >= 0) && (ant <= 2)) {
8373                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8374                 priv->antenna = (enum iwl4965_antenna)ant;
8375         } else
8376                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8377
8378
8379         return count;
8380 }
8381
8382 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8383
8384 static ssize_t show_status(struct device *d,
8385                            struct device_attribute *attr, char *buf)
8386 {
8387         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8388         if (!iwl4965_is_alive(priv))
8389                 return -EAGAIN;
8390         return sprintf(buf, "0x%08x\n", (int)priv->status);
8391 }
8392
8393 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8394
8395 static ssize_t dump_error_log(struct device *d,
8396                               struct device_attribute *attr,
8397                               const char *buf, size_t count)
8398 {
8399         char *p = (char *)buf;
8400
8401         if (p[0] == '1')
8402                 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
8403
8404         return strnlen(buf, count);
8405 }
8406
8407 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8408
8409 static ssize_t dump_event_log(struct device *d,
8410                               struct device_attribute *attr,
8411                               const char *buf, size_t count)
8412 {
8413         char *p = (char *)buf;
8414
8415         if (p[0] == '1')
8416                 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
8417
8418         return strnlen(buf, count);
8419 }
8420
8421 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8422
8423 /*****************************************************************************
8424  *
8425  * driver setup and teardown
8426  *
8427  *****************************************************************************/
8428
8429 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
8430 {
8431         priv->workqueue = create_workqueue(DRV_NAME);
8432
8433         init_waitqueue_head(&priv->wait_command_queue);
8434
8435         INIT_WORK(&priv->up, iwl4965_bg_up);
8436         INIT_WORK(&priv->restart, iwl4965_bg_restart);
8437         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8438         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8439         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8440         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8441         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8442         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8443         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8444         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8445         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8446         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8447
8448         iwl4965_hw_setup_deferred_work(priv);
8449
8450         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8451                      iwl4965_irq_tasklet, (unsigned long)priv);
8452 }
8453
8454 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
8455 {
8456         iwl4965_hw_cancel_deferred_work(priv);
8457
8458         cancel_delayed_work_sync(&priv->init_alive_start);
8459         cancel_delayed_work(&priv->scan_check);
8460         cancel_delayed_work(&priv->alive_start);
8461         cancel_delayed_work(&priv->post_associate);
8462         cancel_work_sync(&priv->beacon_update);
8463 }
8464
8465 static struct attribute *iwl4965_sysfs_entries[] = {
8466         &dev_attr_antenna.attr,
8467         &dev_attr_channels.attr,
8468         &dev_attr_dump_errors.attr,
8469         &dev_attr_dump_events.attr,
8470         &dev_attr_flags.attr,
8471         &dev_attr_filter_flags.attr,
8472 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8473         &dev_attr_measurement.attr,
8474 #endif
8475         &dev_attr_power_level.attr,
8476         &dev_attr_retry_rate.attr,
8477         &dev_attr_rf_kill.attr,
8478         &dev_attr_rs_window.attr,
8479         &dev_attr_statistics.attr,
8480         &dev_attr_status.attr,
8481         &dev_attr_temperature.attr,
8482         &dev_attr_tx_power.attr,
8483
8484         NULL
8485 };
8486
8487 static struct attribute_group iwl4965_attribute_group = {
8488         .name = NULL,           /* put in device directory */
8489         .attrs = iwl4965_sysfs_entries,
8490 };
8491
8492 static struct ieee80211_ops iwl4965_hw_ops = {
8493         .tx = iwl4965_mac_tx,
8494         .start = iwl4965_mac_start,
8495         .stop = iwl4965_mac_stop,
8496         .add_interface = iwl4965_mac_add_interface,
8497         .remove_interface = iwl4965_mac_remove_interface,
8498         .config = iwl4965_mac_config,
8499         .config_interface = iwl4965_mac_config_interface,
8500         .configure_filter = iwl4965_configure_filter,
8501         .set_key = iwl4965_mac_set_key,
8502         .get_stats = iwl4965_mac_get_stats,
8503         .get_tx_stats = iwl4965_mac_get_tx_stats,
8504         .conf_tx = iwl4965_mac_conf_tx,
8505         .get_tsf = iwl4965_mac_get_tsf,
8506         .reset_tsf = iwl4965_mac_reset_tsf,
8507         .beacon_update = iwl4965_mac_beacon_update,
8508         .bss_info_changed = iwl4965_bss_info_changed,
8509 #ifdef CONFIG_IWL4965_HT
8510         .conf_ht = iwl4965_mac_conf_ht,
8511         .ampdu_action = iwl4965_mac_ampdu_action,
8512 #endif  /* CONFIG_IWL4965_HT */
8513         .hw_scan = iwl4965_mac_hw_scan
8514 };
8515
8516 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8517 {
8518         int err = 0;
8519         struct iwl_priv *priv;
8520         struct ieee80211_hw *hw;
8521         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
8522         int i;
8523         DECLARE_MAC_BUF(mac);
8524
8525         /* Disabling hardware scan means that mac80211 will perform scans
8526          * "the hard way", rather than using device's scan. */
8527         if (iwl4965_param_disable_hw_scan) {
8528                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8529                 iwl4965_hw_ops.hw_scan = NULL;
8530         }
8531
8532         if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8533             (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8534                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8535                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8536                 err = -EINVAL;
8537                 goto out;
8538         }
8539
8540         /* mac80211 allocates memory for this device instance, including
8541          *   space for this driver's private structure */
8542         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl4965_hw_ops);
8543         if (hw == NULL) {
8544                 IWL_ERROR("Can not allocate network device\n");
8545                 err = -ENOMEM;
8546                 goto out;
8547         }
8548         SET_IEEE80211_DEV(hw, &pdev->dev);
8549
8550         hw->rate_control_algorithm = "iwl-4965-rs";
8551
8552         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8553         priv = hw->priv;
8554         priv->hw = hw;
8555         priv->cfg = cfg;
8556
8557         priv->pci_dev = pdev;
8558         priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
8559 #ifdef CONFIG_IWLWIFI_DEBUG
8560         iwl_debug_level = iwl4965_param_debug;
8561         atomic_set(&priv->restrict_refcnt, 0);
8562 #endif
8563         priv->retry_rate = 1;
8564
8565         priv->ibss_beacon = NULL;
8566
8567         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8568          *   the range of signal quality values that we'll provide.
8569          * Negative values for level/noise indicate that we'll provide dBm.
8570          * For WE, at least, non-0 values here *enable* display of values
8571          *   in app (iwconfig). */
8572         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
8573         hw->max_noise = -20;    /* noise level, negative indicates dBm */
8574         hw->max_signal = 100;   /* link quality indication (%) */
8575
8576         /* Tell mac80211 our Tx characteristics */
8577         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8578
8579         /* Default value; 4 EDCA QOS priorities */
8580         hw->queues = 4;
8581 #ifdef CONFIG_IWL4965_HT
8582         /* Enhanced value; more queues, to support 11n aggregation */
8583         hw->queues = 16;
8584 #endif /* CONFIG_IWL4965_HT */
8585
8586         spin_lock_init(&priv->lock);
8587         spin_lock_init(&priv->power_data.lock);
8588         spin_lock_init(&priv->sta_lock);
8589         spin_lock_init(&priv->hcmd_lock);
8590         spin_lock_init(&priv->lq_mngr.lock);
8591
8592         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8593                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8594
8595         INIT_LIST_HEAD(&priv->free_frames);
8596
8597         mutex_init(&priv->mutex);
8598         if (pci_enable_device(pdev)) {
8599                 err = -ENODEV;
8600                 goto out_ieee80211_free_hw;
8601         }
8602
8603         pci_set_master(pdev);
8604
8605         /* Clear the driver's (not device's) station table */
8606         iwl4965_clear_stations_table(priv);
8607
8608         priv->data_retry_limit = -1;
8609         priv->ieee_channels = NULL;
8610         priv->ieee_rates = NULL;
8611         priv->band = IEEE80211_BAND_2GHZ;
8612
8613         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8614         if (!err)
8615                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8616         if (err) {
8617                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8618                 goto out_pci_disable_device;
8619         }
8620
8621         pci_set_drvdata(pdev, priv);
8622         err = pci_request_regions(pdev, DRV_NAME);
8623         if (err)
8624                 goto out_pci_disable_device;
8625
8626         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8627          * PCI Tx retries from interfering with C3 CPU state */
8628         pci_write_config_byte(pdev, 0x41, 0x00);
8629
8630         priv->hw_base = pci_iomap(pdev, 0, 0);
8631         if (!priv->hw_base) {
8632                 err = -ENODEV;
8633                 goto out_pci_release_regions;
8634         }
8635
8636         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8637                         (unsigned long long) pci_resource_len(pdev, 0));
8638         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8639
8640         /* Initialize module parameter values here */
8641
8642         /* Disable radio (SW RF KILL) via parameter when loading driver */
8643         if (iwl4965_param_disable) {
8644                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8645                 IWL_DEBUG_INFO("Radio disabled.\n");
8646         }
8647
8648         priv->iw_mode = IEEE80211_IF_TYPE_STA;
8649
8650         priv->ps_mode = 0;
8651         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
8652         priv->valid_antenna = 0x7;      /* assume all 3 connected */
8653         priv->ps_mode = IWL_MIMO_PS_NONE;
8654
8655         /* Choose which receivers/antennas to use */
8656         iwl4965_set_rxon_chain(priv);
8657
8658
8659         printk(KERN_INFO DRV_NAME
8660                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8661
8662         /* Device-specific setup */
8663         if (iwl4965_hw_set_hw_setting(priv)) {
8664                 IWL_ERROR("failed to set hw settings\n");
8665                 goto out_iounmap;
8666         }
8667
8668         if (iwl4965_param_qos_enable)
8669                 priv->qos_data.qos_enable = 1;
8670
8671         iwl4965_reset_qos(priv);
8672
8673         priv->qos_data.qos_active = 0;
8674         priv->qos_data.qos_cap.val = 0;
8675
8676         iwl4965_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8677         iwl4965_setup_deferred_work(priv);
8678         iwl4965_setup_rx_handlers(priv);
8679
8680         priv->rates_mask = IWL_RATES_MASK;
8681         /* If power management is turned on, default to AC mode */
8682         priv->power_mode = IWL_POWER_AC;
8683         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8684
8685         iwl4965_disable_interrupts(priv);
8686
8687         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8688         if (err) {
8689                 IWL_ERROR("failed to create sysfs device attributes\n");
8690                 goto out_release_irq;
8691         }
8692
8693         err = iwl_dbgfs_register(priv, DRV_NAME);
8694         if (err) {
8695                 IWL_ERROR("failed to create debugfs files\n");
8696                 goto out_remove_sysfs;
8697         }
8698         /* nic init */
8699         iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8700                     CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8701
8702         iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8703         err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
8704                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8705                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8706         if (err < 0) {
8707                 IWL_DEBUG_INFO("Failed to init the card\n");
8708                 goto out_remove_dbgfs;
8709         }
8710         /* Read the EEPROM */
8711         err = iwl_eeprom_init(priv);
8712         if (err) {
8713                 IWL_ERROR("Unable to init EEPROM\n");
8714                 goto out_remove_dbgfs;
8715         }
8716         /* MAC Address location in EEPROM same for 3945/4965 */
8717         iwl_eeprom_get_mac(priv, priv->mac_addr);
8718         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8719         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8720
8721         err = iwl4965_init_channel_map(priv);
8722         if (err) {
8723                 IWL_ERROR("initializing regulatory failed: %d\n", err);
8724                 goto out_remove_dbgfs;
8725         }
8726
8727         err = iwl4965_init_geos(priv);
8728         if (err) {
8729                 IWL_ERROR("initializing geos failed: %d\n", err);
8730                 goto out_free_channel_map;
8731         }
8732
8733         iwl4965_rate_control_register(priv->hw);
8734         err = ieee80211_register_hw(priv->hw);
8735         if (err) {
8736                 IWL_ERROR("Failed to register network device (error %d)\n", err);
8737                 goto out_free_geos;
8738         }
8739
8740         priv->hw->conf.beacon_int = 100;
8741         priv->mac80211_registered = 1;
8742         pci_save_state(pdev);
8743         pci_disable_device(pdev);
8744
8745         return 0;
8746
8747  out_free_geos:
8748         iwl4965_free_geos(priv);
8749  out_free_channel_map:
8750         iwl4965_free_channel_map(priv);
8751  out_remove_dbgfs:
8752         iwl_dbgfs_unregister(priv);
8753  out_remove_sysfs:
8754         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8755
8756  out_release_irq:
8757         destroy_workqueue(priv->workqueue);
8758         priv->workqueue = NULL;
8759         iwl4965_unset_hw_setting(priv);
8760
8761  out_iounmap:
8762         pci_iounmap(pdev, priv->hw_base);
8763  out_pci_release_regions:
8764         pci_release_regions(pdev);
8765  out_pci_disable_device:
8766         pci_disable_device(pdev);
8767         pci_set_drvdata(pdev, NULL);
8768  out_ieee80211_free_hw:
8769         ieee80211_free_hw(priv->hw);
8770  out:
8771         return err;
8772 }
8773
8774 static void iwl4965_pci_remove(struct pci_dev *pdev)
8775 {
8776         struct iwl_priv *priv = pci_get_drvdata(pdev);
8777         struct list_head *p, *q;
8778         int i;
8779
8780         if (!priv)
8781                 return;
8782
8783         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8784
8785         set_bit(STATUS_EXIT_PENDING, &priv->status);
8786
8787         iwl4965_down(priv);
8788
8789         /* Free MAC hash list for ADHOC */
8790         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8791                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8792                         list_del(p);
8793                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8794                 }
8795         }
8796
8797         iwl_dbgfs_unregister(priv);
8798         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8799
8800         iwl4965_dealloc_ucode_pci(priv);
8801
8802         if (priv->rxq.bd)
8803                 iwl4965_rx_queue_free(priv, &priv->rxq);
8804         iwl4965_hw_txq_ctx_free(priv);
8805
8806         iwl4965_unset_hw_setting(priv);
8807         iwl4965_clear_stations_table(priv);
8808
8809         if (priv->mac80211_registered) {
8810                 ieee80211_unregister_hw(priv->hw);
8811                 iwl4965_rate_control_unregister(priv->hw);
8812         }
8813
8814         /*netif_stop_queue(dev); */
8815         flush_workqueue(priv->workqueue);
8816
8817         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8818          * priv->workqueue... so we can't take down the workqueue
8819          * until now... */
8820         destroy_workqueue(priv->workqueue);
8821         priv->workqueue = NULL;
8822
8823         pci_iounmap(pdev, priv->hw_base);
8824         pci_release_regions(pdev);
8825         pci_disable_device(pdev);
8826         pci_set_drvdata(pdev, NULL);
8827
8828         iwl4965_free_channel_map(priv);
8829         iwl4965_free_geos(priv);
8830
8831         if (priv->ibss_beacon)
8832                 dev_kfree_skb(priv->ibss_beacon);
8833
8834         ieee80211_free_hw(priv->hw);
8835 }
8836
8837 #ifdef CONFIG_PM
8838
8839 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8840 {
8841         struct iwl_priv *priv = pci_get_drvdata(pdev);
8842
8843         if (priv->is_open) {
8844                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8845                 iwl4965_mac_stop(priv->hw);
8846                 priv->is_open = 1;
8847         }
8848
8849         pci_set_power_state(pdev, PCI_D3hot);
8850
8851         return 0;
8852 }
8853
8854 static int iwl4965_pci_resume(struct pci_dev *pdev)
8855 {
8856         struct iwl_priv *priv = pci_get_drvdata(pdev);
8857
8858         pci_set_power_state(pdev, PCI_D0);
8859
8860         if (priv->is_open)
8861                 iwl4965_mac_start(priv->hw);
8862
8863         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8864         return 0;
8865 }
8866
8867 #endif /* CONFIG_PM */
8868
8869 /*****************************************************************************
8870  *
8871  * driver and module entry point
8872  *
8873  *****************************************************************************/
8874
8875 static struct pci_driver iwl4965_driver = {
8876         .name = DRV_NAME,
8877         .id_table = iwl4965_hw_card_ids,
8878         .probe = iwl4965_pci_probe,
8879         .remove = __devexit_p(iwl4965_pci_remove),
8880 #ifdef CONFIG_PM
8881         .suspend = iwl4965_pci_suspend,
8882         .resume = iwl4965_pci_resume,
8883 #endif
8884 };
8885
8886 static int __init iwl4965_init(void)
8887 {
8888
8889         int ret;
8890         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8891         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8892         ret = pci_register_driver(&iwl4965_driver);
8893         if (ret) {
8894                 IWL_ERROR("Unable to initialize PCI module\n");
8895                 return ret;
8896         }
8897 #ifdef CONFIG_IWLWIFI_DEBUG
8898         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8899         if (ret) {
8900                 IWL_ERROR("Unable to create driver sysfs file\n");
8901                 pci_unregister_driver(&iwl4965_driver);
8902                 return ret;
8903         }
8904 #endif
8905
8906         return ret;
8907 }
8908
8909 static void __exit iwl4965_exit(void)
8910 {
8911 #ifdef CONFIG_IWLWIFI_DEBUG
8912         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8913 #endif
8914         pci_unregister_driver(&iwl4965_driver);
8915 }
8916
8917 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
8918 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8919 module_param_named(disable, iwl4965_param_disable, int, 0444);
8920 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8921 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
8922 MODULE_PARM_DESC(hwcrypto,
8923                  "using hardware crypto engine (default 0 [software])\n");
8924 module_param_named(debug, iwl4965_param_debug, int, 0444);
8925 MODULE_PARM_DESC(debug, "debug output mask");
8926 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
8927 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8928
8929 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
8930 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8931
8932 /* QoS */
8933 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
8934 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8935 module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
8936 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
8937
8938 module_exit(iwl4965_exit);
8939 module_init(iwl4965_init);