drivers/net/wireless/iwlwifi/iwl4965-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-4965.h"
  49 #include "iwl-helpers.h"
  50
  51 #ifdef CONFIG_IWL4965_DEBUG
  52 u32 iwl4965_debug_level;
  53 #endif
  54
  55 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
  56                                   struct iwl4965_tx_queue *txq);
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /* module parameters */
  65 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
  66 static int iwl4965_param_debug;    /* def: 0 = minimal debug log messages */
  67 static int iwl4965_param_disable;  /* def: enable radio */
  68 static int iwl4965_param_antenna;  /* def: 0 = both antennas (use diversity) */
  69 int iwl4965_param_hwcrypto;        /* def: using software encryption */
  70 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
  71 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
  72 int iwl4965_param_amsdu_size_8K;   /* def: enable 8K amsdu size */
  73
  74 /*
  75  * module name, copyright, version, etc.
  76  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  77  */
  78
  79 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  80
  81 #ifdef CONFIG_IWL4965_DEBUG
  82 #define VD "d"
  83 #else
  84 #define VD
  85 #endif
  86
  87 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  88 #define VS "s"
  89 #else
  90 #define VS
  91 #endif
  92
  93 #define IWLWIFI_VERSION "1.2.23k" VD VS
  94 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
  95 #define DRV_VERSION     IWLWIFI_VERSION
  96
  97 /* Change firmware file name, using "-" and incrementing number,
  98  *   *only* when uCode interface or architecture changes so that it
  99  *   is not compatible with earlier drivers.
 100  * This number will also appear in << 8 position of 1st dword of uCode file */
 101 #define IWL4965_UCODE_API "-1"
 102
 103 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 104 MODULE_VERSION(DRV_VERSION);
 105 MODULE_AUTHOR(DRV_COPYRIGHT);
 106 MODULE_LICENSE("GPL");
 107
 108 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
 109 {
 110         u16 fc = le16_to_cpu(hdr->frame_control);
 111         int hdr_len = ieee80211_get_hdrlen(fc);
 112
 113         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 114                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 115         return NULL;
 116 }
 117
 118 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
 119                 struct iwl4965_priv *priv, enum ieee80211_band band)
 120 {
 121         return priv->hw->wiphy->bands[band];
 122 }
 123
 124 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 125 {
 126         /* Single white space is for Linksys APs */
 127         if (essid_len == 1 && essid[0] == ' ')
 128                 return 1;
 129
 130         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 131         while (essid_len) {
 132                 essid_len--;
 133                 if (essid[essid_len] != '\0')
 134                         return 0;
 135         }
 136
 137         return 1;
 138 }
 139
 140 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 141 {
 142         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 143         const char *s = essid;
 144         char *d = escaped;
 145
 146         if (iwl4965_is_empty_essid(essid, essid_len)) {
 147                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 148                 return escaped;
 149         }
 150
 151         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 152         while (essid_len--) {
 153                 if (*s == '\0') {
 154                         *d++ = '\\';
 155                         *d++ = '0';
 156                         s++;
 157                 } else
 158                         *d++ = *s++;
 159         }
 160         *d = '\0';
 161         return escaped;
 162 }
 163
 164 static void iwl4965_print_hex_dump(int level, void *p, u32 len)
 165 {
 166 #ifdef CONFIG_IWL4965_DEBUG
 167         if (!(iwl4965_debug_level & level))
 168                 return;
 169
 170         print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
 171                         p, len, 1);
 172 #endif
 173 }
 174
 175 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 176  * DMA services
 177  *
 178  * Theory of operation
 179  *
 180  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 181  * of buffer descriptors, each of which points to one or more data buffers for
 182  * the device to read from or fill.  Driver and device exchange status of each
 183  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 184  * entries in each circular buffer, to protect against confusing empty and full
 185  * queue states.
 186  *
 187  * The device reads or writes the data in the queues via the device's several
 188  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 189  *
 190  * For Tx queue, there are low mark and high mark limits. If, after queuing
 191  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 192  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 193  * Tx queue resumed.
 194  *
 195  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 196  * queue (#4) for sending commands to the device firmware, and 15 other
 197  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 198  *
 199  * See more detailed info in iwl-4965-hw.h.
 200  ***************************************************/
 201
 202 int iwl4965_queue_space(const struct iwl4965_queue *q)
 203 {
 204         int s = q->read_ptr - q->write_ptr;
 205
 206         if (q->read_ptr > q->write_ptr)
 207                 s -= q->n_bd;
 208
 209         if (s <= 0)
 210                 s += q->n_window;
 211         /* keep some reserve to not confuse empty and full situations */
 212         s -= 2;
 213         if (s < 0)
 214                 s = 0;
 215         return s;
 216 }
 217
 218 /**
 219  * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
 220  * @index -- current index
 221  * @n_bd -- total number of entries in queue (must be power of 2)
 222  */
 223 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
 224 {
 225         return ++index & (n_bd - 1);
 226 }
 227
 228 /**
 229  * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
 230  * @index -- current index
 231  * @n_bd -- total number of entries in queue (must be power of 2)
 232  */
 233 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
 234 {
 235         return --index & (n_bd - 1);
 236 }
 237
 238 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 239 {
 240         return q->write_ptr > q->read_ptr ?
 241                 (i >= q->read_ptr && i < q->write_ptr) :
 242                 !(i < q->read_ptr && i >= q->write_ptr);
 243 }
 244
 245 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 246 {
 247         /* This is for scan command, the big buffer at end of command array */
 248         if (is_huge)
 249                 return q->n_window;     /* must be power of 2 */
 250
 251         /* Otherwise, use normal size buffers */
 252         return index & (q->n_window - 1);
 253 }
 254
 255 /**
 256  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 257  */
 258 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
 259                           int count, int slots_num, u32 id)
 260 {
 261         q->n_bd = count;
 262         q->n_window = slots_num;
 263         q->id = id;
 264
 265         /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
 266          * and iwl4965_queue_dec_wrap are broken. */
 267         BUG_ON(!is_power_of_2(count));
 268
 269         /* slots_num must be power-of-two size, otherwise
 270          * get_cmd_index is broken. */
 271         BUG_ON(!is_power_of_2(slots_num));
 272
 273         q->low_mark = q->n_window / 4;
 274         if (q->low_mark < 4)
 275                 q->low_mark = 4;
 276
 277         q->high_mark = q->n_window / 8;
 278         if (q->high_mark < 2)
 279                 q->high_mark = 2;
 280
 281         q->write_ptr = q->read_ptr = 0;
 282
 283         return 0;
 284 }
 285
 286 /**
 287  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 288  */
 289 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
 290                               struct iwl4965_tx_queue *txq, u32 id)
 291 {
 292         struct pci_dev *dev = priv->pci_dev;
 293
 294         /* Driver private data, only for Tx (not command) queues,
 295          * not shared with device. */
 296         if (id != IWL_CMD_QUEUE_NUM) {
 297                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 298                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 299                 if (!txq->txb) {
 300                         IWL_ERROR("kmalloc for auxiliary BD "
 301                                   "structures failed\n");
 302                         goto error;
 303                 }
 304         } else
 305                 txq->txb = NULL;
 306
 307         /* Circular buffer of transmit frame descriptors (TFDs),
 308          * shared with device */
 309         txq->bd = pci_alloc_consistent(dev,
 310                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 311                         &txq->q.dma_addr);
 312
 313         if (!txq->bd) {
 314                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 315                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 316                 goto error;
 317         }
 318         txq->q.id = id;
 319
 320         return 0;
 321
 322  error:
 323         if (txq->txb) {
 324                 kfree(txq->txb);
 325                 txq->txb = NULL;
 326         }
 327
 328         return -ENOMEM;
 329 }
 330
 331 /**
 332  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 333  */
 334 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
 335                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 336 {
 337         struct pci_dev *dev = priv->pci_dev;
 338         int len;
 339         int rc = 0;
 340
 341         /*
 342          * Alloc buffer array for commands (Tx or other types of commands).
 343          * For the command queue (#4), allocate command space + one big
 344          * command for scan, since scan command is very huge; the system will
 345          * not have two scans at the same time, so only one is needed.
 346          * For normal Tx queues (all other queues), no super-size command
 347          * space is needed.
 348          */
 349         len = sizeof(struct iwl4965_cmd) * slots_num;
 350         if (txq_id == IWL_CMD_QUEUE_NUM)
 351                 len +=  IWL_MAX_SCAN_SIZE;
 352         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 353         if (!txq->cmd)
 354                 return -ENOMEM;
 355
 356         /* Alloc driver data array and TFD circular buffer */
 357         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 358         if (rc) {
 359                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 360
 361                 return -ENOMEM;
 362         }
 363         txq->need_update = 0;
 364
 365         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 366          * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
 367         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 368
 369         /* Initialize queue's high/low-water marks, and head/tail indexes */
 370         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 371
 372         /* Tell device where to find queue */
 373         iwl4965_hw_tx_queue_init(priv, txq);
 374
 375         return 0;
 376 }
 377
 378 /**
 379  * iwl4965_tx_queue_free - Deallocate DMA queue.
 380  * @txq: Transmit queue to deallocate.
 381  *
 382  * Empty queue by removing and destroying all BD's.
 383  * Free all buffers.
 384  * 0-fill, but do not free "txq" descriptor structure.
 385  */
 386 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
 387 {
 388         struct iwl4965_queue *q = &txq->q;
 389         struct pci_dev *dev = priv->pci_dev;
 390         int len;
 391
 392         if (q->n_bd == 0)
 393                 return;
 394
 395         /* first, empty all BD's */
 396         for (; q->write_ptr != q->read_ptr;
 397              q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
 398                 iwl4965_hw_txq_free_tfd(priv, txq);
 399
 400         len = sizeof(struct iwl4965_cmd) * q->n_window;
 401         if (q->id == IWL_CMD_QUEUE_NUM)
 402                 len += IWL_MAX_SCAN_SIZE;
 403
 404         /* De-alloc array of command/tx buffers */
 405         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 406
 407         /* De-alloc circular buffer of TFDs */
 408         if (txq->q.n_bd)
 409                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 410                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 411
 412         /* De-alloc array of per-TFD driver data */
 413         if (txq->txb) {
 414                 kfree(txq->txb);
 415                 txq->txb = NULL;
 416         }
 417
 418         /* 0-fill queue descriptor structure */
 419         memset(txq, 0, sizeof(*txq));
 420 }
 421
 422 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 423
 424 /*************** STATION TABLE MANAGEMENT ****
 425  * mac80211 should be examined to determine if sta_info is duplicating
 426  * the functionality provided here
 427  */
 428
 429 /**************************************************************/
 430
 431 #if 0 /* temporary disable till we add real remove station */
 432 /**
 433  * iwl4965_remove_station - Remove driver's knowledge of station.
 434  *
 435  * NOTE:  This does not remove station from device's station table.
 436  */
 437 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
 438 {
 439         int index = IWL_INVALID_STATION;
 440         int i;
 441         unsigned long flags;
 442
 443         spin_lock_irqsave(&priv->sta_lock, flags);
 444
 445         if (is_ap)
 446                 index = IWL_AP_ID;
 447         else if (is_broadcast_ether_addr(addr))
 448                 index = priv->hw_setting.bcast_sta_id;
 449         else
 450                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 451                         if (priv->stations[i].used &&
 452                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 453                                                 addr)) {
 454                                 index = i;
 455                                 break;
 456                         }
 457
 458         if (unlikely(index == IWL_INVALID_STATION))
 459                 goto out;
 460
 461         if (priv->stations[index].used) {
 462                 priv->stations[index].used = 0;
 463                 priv->num_stations--;
 464         }
 465
 466         BUG_ON(priv->num_stations < 0);
 467
 468 out:
 469         spin_unlock_irqrestore(&priv->sta_lock, flags);
 470         return 0;
 471 }
 472 #endif
 473
 474 /**
 475  * iwl4965_clear_stations_table - Clear the driver's station table
 476  *
 477  * NOTE:  This does not clear or otherwise alter the device's station table.
 478  */
 479 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
 480 {
 481         unsigned long flags;
 482
 483         spin_lock_irqsave(&priv->sta_lock, flags);
 484
 485         priv->num_stations = 0;
 486         memset(priv->stations, 0, sizeof(priv->stations));
 487
 488         spin_unlock_irqrestore(&priv->sta_lock, flags);
 489 }
 490
 491 /**
 492  * iwl4965_add_station_flags - Add station to tables in driver and device
 493  */
 494 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
 495                                 int is_ap, u8 flags, void *ht_data)
 496 {
 497         int i;
 498         int index = IWL_INVALID_STATION;
 499         struct iwl4965_station_entry *station;
 500         unsigned long flags_spin;
 501         DECLARE_MAC_BUF(mac);
 502
 503         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 504         if (is_ap)
 505                 index = IWL_AP_ID;
 506         else if (is_broadcast_ether_addr(addr))
 507                 index = priv->hw_setting.bcast_sta_id;
 508         else
 509                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 510                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 511                                                 addr)) {
 512                                 index = i;
 513                                 break;
 514                         }
 515
 516                         if (!priv->stations[i].used &&
 517                             index == IWL_INVALID_STATION)
 518                                 index = i;
 519                 }
 520
 521
 522         /* These two conditions have the same outcome, but keep them separate
 523           since they have different meanings */
 524         if (unlikely(index == IWL_INVALID_STATION)) {
 525                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 526                 return index;
 527         }
 528
 529         if (priv->stations[index].used &&
 530             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 531                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 532                 return index;
 533         }
 534
 535
 536         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 537         station = &priv->stations[index];
 538         station->used = 1;
 539         priv->num_stations++;
 540
 541         /* Set up the REPLY_ADD_STA command to send to device */
 542         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 543         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 544         station->sta.mode = 0;
 545         station->sta.sta.sta_id = index;
 546         station->sta.station_flags = 0;
 547
 548 #ifdef CONFIG_IWL4965_HT
 549         /* BCAST station and IBSS stations do not work in HT mode */
 550         if (index != priv->hw_setting.bcast_sta_id &&
 551             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 552                 iwl4965_set_ht_add_station(priv, index,
 553                                  (struct ieee80211_ht_info *) ht_data);
 554 #endif /*CONFIG_IWL4965_HT*/
 555
 556         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 557
 558         /* Add station to device's station table */
 559         iwl4965_send_add_station(priv, &station->sta, flags);
 560         return index;
 561
 562 }
 563
 564 /*************** DRIVER STATUS FUNCTIONS   *****/
 565
 566 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
 567 {
 568         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 569          * set but EXIT_PENDING is not */
 570         return test_bit(STATUS_READY, &priv->status) &&
 571                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 572                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 573 }
 574
 575 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
 576 {
 577         return test_bit(STATUS_ALIVE, &priv->status);
 578 }
 579
 580 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
 581 {
 582         return test_bit(STATUS_INIT, &priv->status);
 583 }
 584
 585 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
 586 {
 587         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 588                test_bit(STATUS_RF_KILL_SW, &priv->status);
 589 }
 590
 591 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
 592 {
 593
 594         if (iwl4965_is_rfkill(priv))
 595                 return 0;
 596
 597         return iwl4965_is_ready(priv);
 598 }
 599
 600 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 601
 602 #define IWL_CMD(x) case x : return #x
 603
 604 static const char *get_cmd_string(u8 cmd)
 605 {
 606         switch (cmd) {
 607                 IWL_CMD(REPLY_ALIVE);
 608                 IWL_CMD(REPLY_ERROR);
 609                 IWL_CMD(REPLY_RXON);
 610                 IWL_CMD(REPLY_RXON_ASSOC);
 611                 IWL_CMD(REPLY_QOS_PARAM);
 612                 IWL_CMD(REPLY_RXON_TIMING);
 613                 IWL_CMD(REPLY_ADD_STA);
 614                 IWL_CMD(REPLY_REMOVE_STA);
 615                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 616                 IWL_CMD(REPLY_TX);
 617                 IWL_CMD(REPLY_RATE_SCALE);
 618                 IWL_CMD(REPLY_LEDS_CMD);
 619                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 620                 IWL_CMD(RADAR_NOTIFICATION);
 621                 IWL_CMD(REPLY_QUIET_CMD);
 622                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 623                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 624                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 625                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 626                 IWL_CMD(POWER_TABLE_CMD);
 627                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 628                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 629                 IWL_CMD(REPLY_SCAN_CMD);
 630                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 631                 IWL_CMD(SCAN_START_NOTIFICATION);
 632                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 633                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 634                 IWL_CMD(BEACON_NOTIFICATION);
 635                 IWL_CMD(REPLY_TX_BEACON);
 636                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 637                 IWL_CMD(QUIET_NOTIFICATION);
 638                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 639                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 640                 IWL_CMD(REPLY_BT_CONFIG);
 641                 IWL_CMD(REPLY_STATISTICS_CMD);
 642                 IWL_CMD(STATISTICS_NOTIFICATION);
 643                 IWL_CMD(REPLY_CARD_STATE_CMD);
 644                 IWL_CMD(CARD_STATE_NOTIFICATION);
 645                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 646                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
 647                 IWL_CMD(SENSITIVITY_CMD);
 648                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
 649                 IWL_CMD(REPLY_RX_PHY_CMD);
 650                 IWL_CMD(REPLY_RX_MPDU_CMD);
 651                 IWL_CMD(REPLY_4965_RX);
 652                 IWL_CMD(REPLY_COMPRESSED_BA);
 653         default:
 654                 return "UNKNOWN";
 655
 656         }
 657 }
 658
 659 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 660
 661 /**
 662  * iwl4965_enqueue_hcmd - enqueue a uCode command
 663  * @priv: device private data point
 664  * @cmd: a point to the ucode command structure
 665  *
 666  * The function returns < 0 values to indicate the operation is
 667  * failed. On success, it turns the index (> 0) of command in the
 668  * command queue.
 669  */
 670 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 671 {
 672         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 673         struct iwl4965_queue *q = &txq->q;
 674         struct iwl4965_tfd_frame *tfd;
 675         u32 *control_flags;
 676         struct iwl4965_cmd *out_cmd;
 677         u32 idx;
 678         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 679         dma_addr_t phys_addr;
 680         int ret;
 681         unsigned long flags;
 682
 683         /* If any of the command structures end up being larger than
 684          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 685          * we will need to increase the size of the TFD entries */
 686         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 687                !(cmd->meta.flags & CMD_SIZE_HUGE));
 688
 689         if (iwl4965_is_rfkill(priv)) {
 690                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 691                 return -EIO;
 692         }
 693
 694         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 695                 IWL_ERROR("No space for Tx\n");
 696                 return -ENOSPC;
 697         }
 698
 699         spin_lock_irqsave(&priv->hcmd_lock, flags);
 700
 701         tfd = &txq->bd[q->write_ptr];
 702         memset(tfd, 0, sizeof(*tfd));
 703
 704         control_flags = (u32 *) tfd;
 705
 706         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 707         out_cmd = &txq->cmd[idx];
 708
 709         out_cmd->hdr.cmd = cmd->id;
 710         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 711         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 712
 713         /* At this point, the out_cmd now has all of the incoming cmd
 714          * information */
 715
 716         out_cmd->hdr.flags = 0;
 717         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 718                         INDEX_TO_SEQ(q->write_ptr));
 719         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 720                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 721
 722         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 723                         offsetof(struct iwl4965_cmd, hdr);
 724         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 725
 726         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 727                      "%d bytes at %d[%d]:%d\n",
 728                      get_cmd_string(out_cmd->hdr.cmd),
 729                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 730                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 731
 732         txq->need_update = 1;
 733
 734         /* Set up entry in queue's byte count circular buffer */
 735         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 736
 737         /* Increment and update queue's write index */
 738         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
 739         iwl4965_tx_queue_update_write_ptr(priv, txq);
 740
 741         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 742         return ret ? ret : idx;
 743 }
 744
 745 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 746 {
 747         int ret;
 748
 749         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 750
 751         /* An asynchronous command can not expect an SKB to be set. */
 752         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 753
 754         /* An asynchronous command MUST have a callback. */
 755         BUG_ON(!cmd->meta.u.callback);
 756
 757         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 758                 return -EBUSY;
 759
 760         ret = iwl4965_enqueue_hcmd(priv, cmd);
 761         if (ret < 0) {
 762                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 763                           get_cmd_string(cmd->id), ret);
 764                 return ret;
 765         }
 766         return 0;
 767 }
 768
 769 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 770 {
 771         int cmd_idx;
 772         int ret;
 773         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 774
 775         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 776
 777          /* A synchronous command can not have a callback set. */
 778         BUG_ON(cmd->meta.u.callback != NULL);
 779
 780         if (atomic_xchg(&entry, 1)) {
 781                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 782                           get_cmd_string(cmd->id));
 783                 return -EBUSY;
 784         }
 785
 786         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 787
 788         if (cmd->meta.flags & CMD_WANT_SKB)
 789                 cmd->meta.source = &cmd->meta;
 790
 791         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
 792         if (cmd_idx < 0) {
 793                 ret = cmd_idx;
 794                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 795                           get_cmd_string(cmd->id), ret);
 796                 goto out;
 797         }
 798
 799         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 800                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 801                         HOST_COMPLETE_TIMEOUT);
 802         if (!ret) {
 803                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 804                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 805                                   get_cmd_string(cmd->id),
 806                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 807
 808                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 809                         ret = -ETIMEDOUT;
 810                         goto cancel;
 811                 }
 812         }
 813
 814         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 815                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 816                                get_cmd_string(cmd->id));
 817                 ret = -ECANCELED;
 818                 goto fail;
 819         }
 820         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 821                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 822                                get_cmd_string(cmd->id));
 823                 ret = -EIO;
 824                 goto fail;
 825         }
 826         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 827                 IWL_ERROR("Error: Response NULL in '%s'\n",
 828                           get_cmd_string(cmd->id));
 829                 ret = -EIO;
 830                 goto out;
 831         }
 832
 833         ret = 0;
 834         goto out;
 835
 836 cancel:
 837         if (cmd->meta.flags & CMD_WANT_SKB) {
 838                 struct iwl4965_cmd *qcmd;
 839
 840                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 841                  * TX cmd queue. Otherwise in case the cmd comes
 842                  * in later, it will possibly set an invalid
 843                  * address (cmd->meta.source). */
 844                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 845                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 846         }
 847 fail:
 848         if (cmd->meta.u.skb) {
 849                 dev_kfree_skb_any(cmd->meta.u.skb);
 850                 cmd->meta.u.skb = NULL;
 851         }
 852 out:
 853         atomic_set(&entry, 0);
 854         return ret;
 855 }
 856
 857 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 858 {
 859         if (cmd->meta.flags & CMD_ASYNC)
 860                 return iwl4965_send_cmd_async(priv, cmd);
 861
 862         return iwl4965_send_cmd_sync(priv, cmd);
 863 }
 864
 865 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
 866 {
 867         struct iwl4965_host_cmd cmd = {
 868                 .id = id,
 869                 .len = len,
 870                 .data = data,
 871         };
 872
 873         return iwl4965_send_cmd_sync(priv, &cmd);
 874 }
 875
 876 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
 877 {
 878         struct iwl4965_host_cmd cmd = {
 879                 .id = id,
 880                 .len = sizeof(val),
 881                 .data = &val,
 882         };
 883
 884         return iwl4965_send_cmd_sync(priv, &cmd);
 885 }
 886
 887 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
 888 {
 889         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 890 }
 891
 892 /**
 893  * iwl4965_rxon_add_station - add station into station table.
 894  *
 895  * there is only one AP station with id= IWL_AP_ID
 896  * NOTE: mutex must be held before calling this fnction
 897  */
 898 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
 899                                 const u8 *addr, int is_ap)
 900 {
 901         u8 sta_id;
 902
 903         /* Add station to device's station table */
 904 #ifdef CONFIG_IWL4965_HT
 905         struct ieee80211_conf *conf = &priv->hw->conf;
 906         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 907
 908         if ((is_ap) &&
 909             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 910             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 911                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 912                                                    0, cur_ht_config);
 913         else
 914 #endif /* CONFIG_IWL4965_HT */
 915                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 916                                                    0, NULL);
 917
 918         /* Set up default rate scaling table in device's station table */
 919         iwl4965_add_station(priv, addr, is_ap);
 920
 921         return sta_id;
 922 }
 923
 924 /**
 925  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
 926  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 927  * @channel: Any channel valid for the requested phymode
 928
 929  * In addition to setting the staging RXON, priv->phymode is also set.
 930  *
 931  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 932  * in the staging RXON flag structure based on the phymode
 933  */
 934 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv,
 935                                     enum ieee80211_band band,
 936                                  u16 channel)
 937 {
 938         if (!iwl4965_get_channel_info(priv, band, channel)) {
 939                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 940                                channel, band);
 941                 return -EINVAL;
 942         }
 943
 944         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 945             (priv->band == band))
 946                 return 0;
 947
 948         priv->staging_rxon.channel = cpu_to_le16(channel);
 949         if (band == IEEE80211_BAND_5GHZ)
 950                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 951         else
 952                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 953
 954         priv->band = band;
 955
 956         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 957
 958         return 0;
 959 }
 960
 961 /**
 962  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 963  *
 964  * NOTE:  This is really only useful during development and can eventually
 965  * be #ifdef'd out once the driver is stable and folks aren't actively
 966  * making changes
 967  */
 968 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 969 {
 970         int error = 0;
 971         int counter = 1;
 972
 973         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 974                 error |= le32_to_cpu(rxon->flags &
 975                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 976                                  RXON_FLG_RADAR_DETECT_MSK));
 977                 if (error)
 978                         IWL_WARNING("check 24G fields %d | %d\n",
 979                                     counter++, error);
 980         } else {
 981                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 982                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 983                 if (error)
 984                         IWL_WARNING("check 52 fields %d | %d\n",
 985                                     counter++, error);
 986                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 987                 if (error)
 988                         IWL_WARNING("check 52 CCK %d | %d\n",
 989                                     counter++, error);
 990         }
 991         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 992         if (error)
 993                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 994
 995         /* make sure basic rates 6Mbps and 1Mbps are supported */
 996         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 997                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 998         if (error)
 999                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
1000
1001         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
1002         if (error)
1003                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
1004
1005         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
1006                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
1007         if (error)
1008                 IWL_WARNING("check CCK and short slot %d | %d\n",
1009                             counter++, error);
1010
1011         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
1012                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1013         if (error)
1014                 IWL_WARNING("check CCK & auto detect %d | %d\n",
1015                             counter++, error);
1016
1017         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1018                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1019         if (error)
1020                 IWL_WARNING("check TGG and auto detect %d | %d\n",
1021                             counter++, error);
1022
1023         if (error)
1024                 IWL_WARNING("Tuning to channel %d\n",
1025                             le16_to_cpu(rxon->channel));
1026
1027         if (error) {
1028                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1029                 return -1;
1030         }
1031         return 0;
1032 }
1033
1034 /**
1035  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1036  * @priv: staging_rxon is compared to active_rxon
1037  *
1038  * If the RXON structure is changing enough to require a new tune,
1039  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1040  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1041  */
1042 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1043 {
1044
1045         /* These items are only settable from the full RXON command */
1046         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1047             compare_ether_addr(priv->staging_rxon.bssid_addr,
1048                                priv->active_rxon.bssid_addr) ||
1049             compare_ether_addr(priv->staging_rxon.node_addr,
1050                                priv->active_rxon.node_addr) ||
1051             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1052                                priv->active_rxon.wlap_bssid_addr) ||
1053             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1054             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1055             (priv->staging_rxon.air_propagation !=
1056              priv->active_rxon.air_propagation) ||
1057             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1058              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1059             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1060              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1061             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1062             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1063                 return 1;
1064
1065         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1066          * be updated with the RXON_ASSOC command -- however only some
1067          * flag transitions are allowed using RXON_ASSOC */
1068
1069         /* Check if we are not switching bands */
1070         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1071             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1072                 return 1;
1073
1074         /* Check if we are switching association toggle */
1075         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1076                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1077                 return 1;
1078
1079         return 0;
1080 }
1081
1082 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1083 {
1084         int rc = 0;
1085         struct iwl4965_rx_packet *res = NULL;
1086         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1087         struct iwl4965_host_cmd cmd = {
1088                 .id = REPLY_RXON_ASSOC,
1089                 .len = sizeof(rxon_assoc),
1090                 .meta.flags = CMD_WANT_SKB,
1091                 .data = &rxon_assoc,
1092         };
1093         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1094         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1095
1096         if ((rxon1->flags == rxon2->flags) &&
1097             (rxon1->filter_flags == rxon2->filter_flags) &&
1098             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1099             (rxon1->ofdm_ht_single_stream_basic_rates ==
1100              rxon2->ofdm_ht_single_stream_basic_rates) &&
1101             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1102              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1103             (rxon1->rx_chain == rxon2->rx_chain) &&
1104             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1105                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1106                 return 0;
1107         }
1108
1109         rxon_assoc.flags = priv->staging_rxon.flags;
1110         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1111         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1112         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1113         rxon_assoc.reserved = 0;
1114         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1115             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1116         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1117             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1118         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1119
1120         rc = iwl4965_send_cmd_sync(priv, &cmd);
1121         if (rc)
1122                 return rc;
1123
1124         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1125         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1126                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1127                 rc = -EIO;
1128         }
1129
1130         priv->alloc_rxb_skb--;
1131         dev_kfree_skb_any(cmd.meta.u.skb);
1132
1133         return rc;
1134 }
1135
1136 /**
1137  * iwl4965_commit_rxon - commit staging_rxon to hardware
1138  *
1139  * The RXON command in staging_rxon is committed to the hardware and
1140  * the active_rxon structure is updated with the new data.  This
1141  * function correctly transitions out of the RXON_ASSOC_MSK state if
1142  * a HW tune is required based on the RXON structure changes.
1143  */
1144 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1145 {
1146         /* cast away the const for active_rxon in this function */
1147         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1148         DECLARE_MAC_BUF(mac);
1149         int rc = 0;
1150
1151         if (!iwl4965_is_alive(priv))
1152                 return -1;
1153
1154         /* always get timestamp with Rx frame */
1155         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1156
1157         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1158         if (rc) {
1159                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1160                 return -EINVAL;
1161         }
1162
1163         /* If we don't need to send a full RXON, we can use
1164          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1165          * and other flags for the current radio configuration. */
1166         if (!iwl4965_full_rxon_required(priv)) {
1167                 rc = iwl4965_send_rxon_assoc(priv);
1168                 if (rc) {
1169                         IWL_ERROR("Error setting RXON_ASSOC "
1170                                   "configuration (%d).\n", rc);
1171                         return rc;
1172                 }
1173
1174                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1175
1176                 return 0;
1177         }
1178
1179         /* station table will be cleared */
1180         priv->assoc_station_added = 0;
1181
1182 #ifdef CONFIG_IWL4965_SENSITIVITY
1183         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1184         if (!priv->error_recovering)
1185                 priv->start_calib = 0;
1186
1187         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1188 #endif /* CONFIG_IWL4965_SENSITIVITY */
1189
1190         /* If we are currently associated and the new config requires
1191          * an RXON_ASSOC and the new config wants the associated mask enabled,
1192          * we must clear the associated from the active configuration
1193          * before we apply the new config */
1194         if (iwl4965_is_associated(priv) &&
1195             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1196                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1197                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1198
1199                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1200                                       sizeof(struct iwl4965_rxon_cmd),
1201                                       &priv->active_rxon);
1202
1203                 /* If the mask clearing failed then we set
1204                  * active_rxon back to what it was previously */
1205                 if (rc) {
1206                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1207                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1208                                   "configuration (%d).\n", rc);
1209                         return rc;
1210                 }
1211         }
1212
1213         IWL_DEBUG_INFO("Sending RXON\n"
1214                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1215                        "* channel = %d\n"
1216                        "* bssid = %s\n",
1217                        ((priv->staging_rxon.filter_flags &
1218                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1219                        le16_to_cpu(priv->staging_rxon.channel),
1220                        print_mac(mac, priv->staging_rxon.bssid_addr));
1221
1222         /* Apply the new configuration */
1223         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1224                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1225         if (rc) {
1226                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1227                 return rc;
1228         }
1229
1230         iwl4965_clear_stations_table(priv);
1231
1232 #ifdef CONFIG_IWL4965_SENSITIVITY
1233         if (!priv->error_recovering)
1234                 priv->start_calib = 0;
1235
1236         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1237         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1238 #endif /* CONFIG_IWL4965_SENSITIVITY */
1239
1240         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1241
1242         /* If we issue a new RXON command which required a tune then we must
1243          * send a new TXPOWER command or we won't be able to Tx any frames */
1244         rc = iwl4965_hw_reg_send_txpower(priv);
1245         if (rc) {
1246                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1247                 return rc;
1248         }
1249
1250         /* Add the broadcast address so we can send broadcast frames */
1251         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1252             IWL_INVALID_STATION) {
1253                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1254                 return -EIO;
1255         }
1256
1257         /* If we have set the ASSOC_MSK and we are in BSS mode then
1258          * add the IWL_AP_ID to the station rate table */
1259         if (iwl4965_is_associated(priv) &&
1260             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1261                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1262                     == IWL_INVALID_STATION) {
1263                         IWL_ERROR("Error adding AP address for transmit.\n");
1264                         return -EIO;
1265                 }
1266                 priv->assoc_station_added = 1;
1267         }
1268
1269         return 0;
1270 }
1271
1272 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1273 {
1274         struct iwl4965_bt_cmd bt_cmd = {
1275                 .flags = 3,
1276                 .lead_time = 0xAA,
1277                 .max_kill = 1,
1278                 .kill_ack_mask = 0,
1279                 .kill_cts_mask = 0,
1280         };
1281
1282         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1283                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1284 }
1285
1286 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1287 {
1288         int rc = 0;
1289         struct iwl4965_rx_packet *res;
1290         struct iwl4965_host_cmd cmd = {
1291                 .id = REPLY_SCAN_ABORT_CMD,
1292                 .meta.flags = CMD_WANT_SKB,
1293         };
1294
1295         /* If there isn't a scan actively going on in the hardware
1296          * then we are in between scan bands and not actually
1297          * actively scanning, so don't send the abort command */
1298         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1299                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1300                 return 0;
1301         }
1302
1303         rc = iwl4965_send_cmd_sync(priv, &cmd);
1304         if (rc) {
1305                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1306                 return rc;
1307         }
1308
1309         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1310         if (res->u.status != CAN_ABORT_STATUS) {
1311                 /* The scan abort will return 1 for success or
1312                  * 2 for "failure".  A failure condition can be
1313                  * due to simply not being in an active scan which
1314                  * can occur if we send the scan abort before we
1315                  * the microcode has notified us that a scan is
1316                  * completed. */
1317                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1318                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1319                 clear_bit(STATUS_SCAN_HW, &priv->status);
1320         }
1321
1322         dev_kfree_skb_any(cmd.meta.u.skb);
1323
1324         return rc;
1325 }
1326
1327 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1328                                         struct iwl4965_cmd *cmd,
1329                                         struct sk_buff *skb)
1330 {
1331         return 1;
1332 }
1333
1334 /*
1335  * CARD_STATE_CMD
1336  *
1337  * Use: Sets the device's internal card state to enable, disable, or halt
1338  *
1339  * When in the 'enable' state the card operates as normal.
1340  * When in the 'disable' state, the card enters into a low power mode.
1341  * When in the 'halt' state, the card is shut down and must be fully
1342  * restarted to come back on.
1343  */
1344 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1345 {
1346         struct iwl4965_host_cmd cmd = {
1347                 .id = REPLY_CARD_STATE_CMD,
1348                 .len = sizeof(u32),
1349                 .data = &flags,
1350                 .meta.flags = meta_flag,
1351         };
1352
1353         if (meta_flag & CMD_ASYNC)
1354                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1355
1356         return iwl4965_send_cmd(priv, &cmd);
1357 }
1358
1359 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1360                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1361 {
1362         struct iwl4965_rx_packet *res = NULL;
1363
1364         if (!skb) {
1365                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1366                 return 1;
1367         }
1368
1369         res = (struct iwl4965_rx_packet *)skb->data;
1370         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1371                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1372                           res->hdr.flags);
1373                 return 1;
1374         }
1375
1376         switch (res->u.add_sta.status) {
1377         case ADD_STA_SUCCESS_MSK:
1378                 break;
1379         default:
1380                 break;
1381         }
1382
1383         /* We didn't cache the SKB; let the caller free it */
1384         return 1;
1385 }
1386
1387 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1388                          struct iwl4965_addsta_cmd *sta, u8 flags)
1389 {
1390         struct iwl4965_rx_packet *res = NULL;
1391         int rc = 0;
1392         struct iwl4965_host_cmd cmd = {
1393                 .id = REPLY_ADD_STA,
1394                 .len = sizeof(struct iwl4965_addsta_cmd),
1395                 .meta.flags = flags,
1396                 .data = sta,
1397         };
1398
1399         if (flags & CMD_ASYNC)
1400                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1401         else
1402                 cmd.meta.flags |= CMD_WANT_SKB;
1403
1404         rc = iwl4965_send_cmd(priv, &cmd);
1405
1406         if (rc || (flags & CMD_ASYNC))
1407                 return rc;
1408
1409         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1410         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1411                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1412                           res->hdr.flags);
1413                 rc = -EIO;
1414         }
1415
1416         if (rc == 0) {
1417                 switch (res->u.add_sta.status) {
1418                 case ADD_STA_SUCCESS_MSK:
1419                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1420                         break;
1421                 default:
1422                         rc = -EIO;
1423                         IWL_WARNING("REPLY_ADD_STA failed\n");
1424                         break;
1425                 }
1426         }
1427
1428         priv->alloc_rxb_skb--;
1429         dev_kfree_skb_any(cmd.meta.u.skb);
1430
1431         return rc;
1432 }
1433
1434 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1435                                    struct ieee80211_key_conf *keyconf,
1436                                    u8 sta_id)
1437 {
1438         unsigned long flags;
1439         __le16 key_flags = 0;
1440
1441         switch (keyconf->alg) {
1442         case ALG_CCMP:
1443                 key_flags |= STA_KEY_FLG_CCMP;
1444                 key_flags |= cpu_to_le16(
1445                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1446                 key_flags &= ~STA_KEY_FLG_INVALID;
1447                 break;
1448         case ALG_TKIP:
1449         case ALG_WEP:
1450         default:
1451                 return -EINVAL;
1452         }
1453         spin_lock_irqsave(&priv->sta_lock, flags);
1454         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1455         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1456         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1457                keyconf->keylen);
1458
1459         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1460                keyconf->keylen);
1461         priv->stations[sta_id].sta.key.key_flags = key_flags;
1462         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1463         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1464
1465         spin_unlock_irqrestore(&priv->sta_lock, flags);
1466
1467         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1468         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1469         return 0;
1470 }
1471
1472 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1473 {
1474         unsigned long flags;
1475
1476         spin_lock_irqsave(&priv->sta_lock, flags);
1477         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1478         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1479         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1480         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1481         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1482         spin_unlock_irqrestore(&priv->sta_lock, flags);
1483
1484         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1485         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1486         return 0;
1487 }
1488
1489 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1490 {
1491         struct list_head *element;
1492
1493         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1494                        priv->frames_count);
1495
1496         while (!list_empty(&priv->free_frames)) {
1497                 element = priv->free_frames.next;
1498                 list_del(element);
1499                 kfree(list_entry(element, struct iwl4965_frame, list));
1500                 priv->frames_count--;
1501         }
1502
1503         if (priv->frames_count) {
1504                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1505                             priv->frames_count);
1506                 priv->frames_count = 0;
1507         }
1508 }
1509
1510 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1511 {
1512         struct iwl4965_frame *frame;
1513         struct list_head *element;
1514         if (list_empty(&priv->free_frames)) {
1515                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1516                 if (!frame) {
1517                         IWL_ERROR("Could not allocate frame!\n");
1518                         return NULL;
1519                 }
1520
1521                 priv->frames_count++;
1522                 return frame;
1523         }
1524
1525         element = priv->free_frames.next;
1526         list_del(element);
1527         return list_entry(element, struct iwl4965_frame, list);
1528 }
1529
1530 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1531 {
1532         memset(frame, 0, sizeof(*frame));
1533         list_add(&frame->list, &priv->free_frames);
1534 }
1535
1536 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1537                                 struct ieee80211_hdr *hdr,
1538                                 const u8 *dest, int left)
1539 {
1540
1541         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1542             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1543              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1544                 return 0;
1545
1546         if (priv->ibss_beacon->len > left)
1547                 return 0;
1548
1549         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1550
1551         return priv->ibss_beacon->len;
1552 }
1553
1554 int iwl4965_rate_index_from_plcp(int plcp)
1555 {
1556         int i = 0;
1557
1558         /* 4965 HT rate format */
1559         if (plcp & RATE_MCS_HT_MSK) {
1560                 i = (plcp & 0xff);
1561
1562                 if (i >= IWL_RATE_MIMO_6M_PLCP)
1563                         i = i - IWL_RATE_MIMO_6M_PLCP;
1564
1565                 i += IWL_FIRST_OFDM_RATE;
1566                 /* skip 9M not supported in ht*/
1567                 if (i >= IWL_RATE_9M_INDEX)
1568                         i += 1;
1569                 if ((i >= IWL_FIRST_OFDM_RATE) &&
1570                     (i <= IWL_LAST_OFDM_RATE))
1571                         return i;
1572
1573         /* 4965 legacy rate format, search for match in table */
1574         } else {
1575                 for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1576                         if (iwl4965_rates[i].plcp == (plcp &0xFF))
1577                                 return i;
1578         }
1579         return -1;
1580 }
1581
1582 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1583 {
1584         u8 i;
1585
1586         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1587              i = iwl4965_rates[i].next_ieee) {
1588                 if (rate_mask & (1 << i))
1589                         return iwl4965_rates[i].plcp;
1590         }
1591
1592         return IWL_RATE_INVALID;
1593 }
1594
1595 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1596 {
1597         struct iwl4965_frame *frame;
1598         unsigned int frame_size;
1599         int rc;
1600         u8 rate;
1601
1602         frame = iwl4965_get_free_frame(priv);
1603
1604         if (!frame) {
1605                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1606                           "command.\n");
1607                 return -ENOMEM;
1608         }
1609
1610         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1611                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1612                                                 0xFF0);
1613                 if (rate == IWL_INVALID_RATE)
1614                         rate = IWL_RATE_6M_PLCP;
1615         } else {
1616                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1617                 if (rate == IWL_INVALID_RATE)
1618                         rate = IWL_RATE_1M_PLCP;
1619         }
1620
1621         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1622
1623         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1624                               &frame->u.cmd[0]);
1625
1626         iwl4965_free_frame(priv, frame);
1627
1628         return rc;
1629 }
1630
1631 /******************************************************************************
1632  *
1633  * EEPROM related functions
1634  *
1635  ******************************************************************************/
1636
1637 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1638 {
1639         memcpy(mac, priv->eeprom.mac_address, 6);
1640 }
1641
1642 static inline void iwl4965_eeprom_release_semaphore(struct iwl4965_priv *priv)
1643 {
1644         iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1645                 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
1646 }
1647
1648 /**
1649  * iwl4965_eeprom_init - read EEPROM contents
1650  *
1651  * Load the EEPROM contents from adapter into priv->eeprom
1652  *
1653  * NOTE:  This routine uses the non-debug IO access functions.
1654  */
1655 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1656 {
1657         u16 *e = (u16 *)&priv->eeprom;
1658         u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1659         u32 r;
1660         int sz = sizeof(priv->eeprom);
1661         int rc;
1662         int i;
1663         u16 addr;
1664
1665         /* The EEPROM structure has several padding buffers within it
1666          * and when adding new EEPROM maps is subject to programmer errors
1667          * which may be very difficult to identify without explicitly
1668          * checking the resulting size of the eeprom map. */
1669         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1670
1671         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1672                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1673                 return -ENOENT;
1674         }
1675
1676         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1677         rc = iwl4965_eeprom_acquire_semaphore(priv);
1678         if (rc < 0) {
1679                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1680                 return -ENOENT;
1681         }
1682
1683         /* eeprom is an array of 16bit values */
1684         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1685                 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1686                 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1687
1688                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1689                                         i += IWL_EEPROM_ACCESS_DELAY) {
1690                         r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1691                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1692                                 break;
1693                         udelay(IWL_EEPROM_ACCESS_DELAY);
1694                 }
1695
1696                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1697                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1698                         rc = -ETIMEDOUT;
1699                         goto done;
1700                 }
1701                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1702         }
1703         rc = 0;
1704
1705 done:
1706         iwl4965_eeprom_release_semaphore(priv);
1707         return rc;
1708 }
1709
1710 /******************************************************************************
1711  *
1712  * Misc. internal state and helper functions
1713  *
1714  ******************************************************************************/
1715 #ifdef CONFIG_IWL4965_DEBUG
1716
1717 /**
1718  * iwl4965_report_frame - dump frame to syslog during debug sessions
1719  *
1720  * You may hack this function to show different aspects of received frames,
1721  * including selective frame dumps.
1722  * group100 parameter selects whether to show 1 out of 100 good frames.
1723  *
1724  * TODO:  This was originally written for 3945, need to audit for
1725  *        proper operation with 4965.
1726  */
1727 void iwl4965_report_frame(struct iwl4965_priv *priv,
1728                       struct iwl4965_rx_packet *pkt,
1729                       struct ieee80211_hdr *header, int group100)
1730 {
1731         u32 to_us;
1732         u32 print_summary = 0;
1733         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1734         u32 hundred = 0;
1735         u32 dataframe = 0;
1736         u16 fc;
1737         u16 seq_ctl;
1738         u16 channel;
1739         u16 phy_flags;
1740         int rate_sym;
1741         u16 length;
1742         u16 status;
1743         u16 bcn_tmr;
1744         u32 tsf_low;
1745         u64 tsf;
1746         u8 rssi;
1747         u8 agc;
1748         u16 sig_avg;
1749         u16 noise_diff;
1750         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1751         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1752         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1753         u8 *data = IWL_RX_DATA(pkt);
1754
1755         /* MAC header */
1756         fc = le16_to_cpu(header->frame_control);
1757         seq_ctl = le16_to_cpu(header->seq_ctrl);
1758
1759         /* metadata */
1760         channel = le16_to_cpu(rx_hdr->channel);
1761         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1762         rate_sym = rx_hdr->rate;
1763         length = le16_to_cpu(rx_hdr->len);
1764
1765         /* end-of-frame status and timestamp */
1766         status = le32_to_cpu(rx_end->status);
1767         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1768         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1769         tsf = le64_to_cpu(rx_end->timestamp);
1770
1771         /* signal statistics */
1772         rssi = rx_stats->rssi;
1773         agc = rx_stats->agc;
1774         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1775         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1776
1777         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1778
1779         /* if data frame is to us and all is good,
1780          *   (optionally) print summary for only 1 out of every 100 */
1781         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1782             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1783                 dataframe = 1;
1784                 if (!group100)
1785                         print_summary = 1;      /* print each frame */
1786                 else if (priv->framecnt_to_us < 100) {
1787                         priv->framecnt_to_us++;
1788                         print_summary = 0;
1789                 } else {
1790                         priv->framecnt_to_us = 0;
1791                         print_summary = 1;
1792                         hundred = 1;
1793                 }
1794         } else {
1795                 /* print summary for all other frames */
1796                 print_summary = 1;
1797         }
1798
1799         if (print_summary) {
1800                 char *title;
1801                 u32 rate;
1802
1803                 if (hundred)
1804                         title = "100Frames";
1805                 else if (fc & IEEE80211_FCTL_RETRY)
1806                         title = "Retry";
1807                 else if (ieee80211_is_assoc_response(fc))
1808                         title = "AscRsp";
1809                 else if (ieee80211_is_reassoc_response(fc))
1810                         title = "RasRsp";
1811                 else if (ieee80211_is_probe_response(fc)) {
1812                         title = "PrbRsp";
1813                         print_dump = 1; /* dump frame contents */
1814                 } else if (ieee80211_is_beacon(fc)) {
1815                         title = "Beacon";
1816                         print_dump = 1; /* dump frame contents */
1817                 } else if (ieee80211_is_atim(fc))
1818                         title = "ATIM";
1819                 else if (ieee80211_is_auth(fc))
1820                         title = "Auth";
1821                 else if (ieee80211_is_deauth(fc))
1822                         title = "DeAuth";
1823                 else if (ieee80211_is_disassoc(fc))
1824                         title = "DisAssoc";
1825                 else
1826                         title = "Frame";
1827
1828                 rate = iwl4965_rate_index_from_plcp(rate_sym);
1829                 if (rate == -1)
1830                         rate = 0;
1831                 else
1832                         rate = iwl4965_rates[rate].ieee / 2;
1833
1834                 /* print frame summary.
1835                  * MAC addresses show just the last byte (for brevity),
1836                  *    but you can hack it to show more, if you'd like to. */
1837                 if (dataframe)
1838                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1839                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1840                                      title, fc, header->addr1[5],
1841                                      length, rssi, channel, rate);
1842                 else {
1843                         /* src/dst addresses assume managed mode */
1844                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1845                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1846                                      "phy=0x%02x, chnl=%d\n",
1847                                      title, fc, header->addr1[5],
1848                                      header->addr3[5], rssi,
1849                                      tsf_low - priv->scan_start_tsf,
1850                                      phy_flags, channel);
1851                 }
1852         }
1853         if (print_dump)
1854                 iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1855 }
1856 #endif
1857
1858 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1859 {
1860         if (priv->hw_setting.shared_virt)
1861                 pci_free_consistent(priv->pci_dev,
1862                                     sizeof(struct iwl4965_shared),
1863                                     priv->hw_setting.shared_virt,
1864                                     priv->hw_setting.shared_phys);
1865 }
1866
1867 /**
1868  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1869  *
1870  * return : set the bit for each supported rate insert in ie
1871  */
1872 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1873                                     u16 basic_rate, int *left)
1874 {
1875         u16 ret_rates = 0, bit;
1876         int i;
1877         u8 *cnt = ie;
1878         u8 *rates = ie + 1;
1879
1880         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1881                 if (bit & supported_rate) {
1882                         ret_rates |= bit;
1883                         rates[*cnt] = iwl4965_rates[i].ieee |
1884                                 ((bit & basic_rate) ? 0x80 : 0x00);
1885                         (*cnt)++;
1886                         (*left)--;
1887                         if ((*left <= 0) ||
1888                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1889                                 break;
1890                 }
1891         }
1892
1893         return ret_rates;
1894 }
1895
1896 /**
1897  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1898  */
1899 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1900                                   enum ieee80211_band band,
1901                                   struct ieee80211_mgmt *frame,
1902                                   int left, int is_direct)
1903 {
1904         int len = 0;
1905         u8 *pos = NULL;
1906         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1907 #ifdef CONFIG_IWL4965_HT
1908         const struct ieee80211_supported_band *sband =
1909                                                 iwl4965_get_hw_mode(priv, band);
1910 #endif /* CONFIG_IWL4965_HT */
1911
1912         /* Make sure there is enough space for the probe request,
1913          * two mandatory IEs and the data */
1914         left -= 24;
1915         if (left < 0)
1916                 return 0;
1917         len += 24;
1918
1919         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1920         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1921         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1922         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1923         frame->seq_ctrl = 0;
1924
1925         /* fill in our indirect SSID IE */
1926         /* ...next IE... */
1927
1928         left -= 2;
1929         if (left < 0)
1930                 return 0;
1931         len += 2;
1932         pos = &(frame->u.probe_req.variable[0]);
1933         *pos++ = WLAN_EID_SSID;
1934         *pos++ = 0;
1935
1936         /* fill in our direct SSID IE... */
1937         if (is_direct) {
1938                 /* ...next IE... */
1939                 left -= 2 + priv->essid_len;
1940                 if (left < 0)
1941                         return 0;
1942                 /* ... fill it in... */
1943                 *pos++ = WLAN_EID_SSID;
1944                 *pos++ = priv->essid_len;
1945                 memcpy(pos, priv->essid, priv->essid_len);
1946                 pos += priv->essid_len;
1947                 len += 2 + priv->essid_len;
1948         }
1949
1950         /* fill in supported rate */
1951         /* ...next IE... */
1952         left -= 2;
1953         if (left < 0)
1954                 return 0;
1955
1956         /* ... fill it in... */
1957         *pos++ = WLAN_EID_SUPP_RATES;
1958         *pos = 0;
1959
1960         /* exclude 60M rate */
1961         active_rates = priv->rates_mask;
1962         active_rates &= ~IWL_RATE_60M_MASK;
1963
1964         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1965
1966         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1967         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1968                         active_rate_basic, &left);
1969         active_rates &= ~ret_rates;
1970
1971         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1972                                  active_rate_basic, &left);
1973         active_rates &= ~ret_rates;
1974
1975         len += 2 + *pos;
1976         pos += (*pos) + 1;
1977         if (active_rates == 0)
1978                 goto fill_end;
1979
1980         /* fill in supported extended rate */
1981         /* ...next IE... */
1982         left -= 2;
1983         if (left < 0)
1984                 return 0;
1985         /* ... fill it in... */
1986         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1987         *pos = 0;
1988         iwl4965_supported_rate_to_ie(pos, active_rates,
1989                                  active_rate_basic, &left);
1990         if (*pos > 0)
1991                 len += 2 + *pos;
1992
1993 #ifdef CONFIG_IWL4965_HT
1994         if (sband && sband->ht_info.ht_supported) {
1995                 struct ieee80211_ht_cap *ht_cap;
1996                 pos += (*pos) + 1;
1997                 *pos++ = WLAN_EID_HT_CAPABILITY;
1998                 *pos++ = sizeof(struct ieee80211_ht_cap);
1999                 ht_cap = (struct ieee80211_ht_cap *)pos;
2000                 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
2001                 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
2002                 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
2003                                             IEEE80211_HT_CAP_AMPDU_FACTOR) |
2004                                             ((sband->ht_info.ampdu_density << 2) &
2005                                             IEEE80211_HT_CAP_AMPDU_DENSITY);
2006                 len += 2 + sizeof(struct ieee80211_ht_cap);
2007         }
2008 #endif  /*CONFIG_IWL4965_HT */
2009
2010  fill_end:
2011         return (u16)len;
2012 }
2013
2014 /*
2015  * QoS  support
2016 */
2017 #ifdef CONFIG_IWL4965_QOS
2018 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
2019                                        struct iwl4965_qosparam_cmd *qos)
2020 {
2021
2022         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
2023                                 sizeof(struct iwl4965_qosparam_cmd), qos);
2024 }
2025
2026 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
2027 {
2028         u16 cw_min = 15;
2029         u16 cw_max = 1023;
2030         u8 aifs = 2;
2031         u8 is_legacy = 0;
2032         unsigned long flags;
2033         int i;
2034
2035         spin_lock_irqsave(&priv->lock, flags);
2036         priv->qos_data.qos_active = 0;
2037
2038         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
2039                 if (priv->qos_data.qos_enable)
2040                         priv->qos_data.qos_active = 1;
2041                 if (!(priv->active_rate & 0xfff0)) {
2042                         cw_min = 31;
2043                         is_legacy = 1;
2044                 }
2045         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2046                 if (priv->qos_data.qos_enable)
2047                         priv->qos_data.qos_active = 1;
2048         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
2049                 cw_min = 31;
2050                 is_legacy = 1;
2051         }
2052
2053         if (priv->qos_data.qos_active)
2054                 aifs = 3;
2055
2056         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
2057         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
2058         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
2059         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
2060         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
2061
2062         if (priv->qos_data.qos_active) {
2063                 i = 1;
2064                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
2065                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
2066                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
2067                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2068                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2069
2070                 i = 2;
2071                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2072                         cpu_to_le16((cw_min + 1) / 2 - 1);
2073                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2074                         cpu_to_le16(cw_max);
2075                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2076                 if (is_legacy)
2077                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2078                                 cpu_to_le16(6016);
2079                 else
2080                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2081                                 cpu_to_le16(3008);
2082                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2083
2084                 i = 3;
2085                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2086                         cpu_to_le16((cw_min + 1) / 4 - 1);
2087                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2088                         cpu_to_le16((cw_max + 1) / 2 - 1);
2089                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2090                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2091                 if (is_legacy)
2092                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2093                                 cpu_to_le16(3264);
2094                 else
2095                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2096                                 cpu_to_le16(1504);
2097         } else {
2098                 for (i = 1; i < 4; i++) {
2099                         priv->qos_data.def_qos_parm.ac[i].cw_min =
2100                                 cpu_to_le16(cw_min);
2101                         priv->qos_data.def_qos_parm.ac[i].cw_max =
2102                                 cpu_to_le16(cw_max);
2103                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2104                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2105                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2106                 }
2107         }
2108         IWL_DEBUG_QOS("set QoS to default \n");
2109
2110         spin_unlock_irqrestore(&priv->lock, flags);
2111 }
2112
2113 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2114 {
2115         unsigned long flags;
2116
2117         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2118                 return;
2119
2120         if (!priv->qos_data.qos_enable)
2121                 return;
2122
2123         spin_lock_irqsave(&priv->lock, flags);
2124         priv->qos_data.def_qos_parm.qos_flags = 0;
2125
2126         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2127             !priv->qos_data.qos_cap.q_AP.txop_request)
2128                 priv->qos_data.def_qos_parm.qos_flags |=
2129                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2130         if (priv->qos_data.qos_active)
2131                 priv->qos_data.def_qos_parm.qos_flags |=
2132                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2133
2134 #ifdef CONFIG_IWL4965_HT
2135         if (priv->current_ht_config.is_ht)
2136                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2137 #endif /* CONFIG_IWL4965_HT */
2138
2139         spin_unlock_irqrestore(&priv->lock, flags);
2140
2141         if (force || iwl4965_is_associated(priv)) {
2142                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2143                                 priv->qos_data.qos_active,
2144                                 priv->qos_data.def_qos_parm.qos_flags);
2145
2146                 iwl4965_send_qos_params_command(priv,
2147                                 &(priv->qos_data.def_qos_parm));
2148         }
2149 }
2150
2151 #endif /* CONFIG_IWL4965_QOS */
2152 /*
2153  * Power management (not Tx power!) functions
2154  */
2155 #define MSEC_TO_USEC 1024
2156
2157 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2158 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2159 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2160 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2161                                      __constant_cpu_to_le32(X1), \
2162                                      __constant_cpu_to_le32(X2), \
2163                                      __constant_cpu_to_le32(X3), \
2164                                      __constant_cpu_to_le32(X4)}
2165
2166
2167 /* default power management (not Tx power) table values */
2168 /* for tim  0-10 */
2169 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2170         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2171         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2172         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2173         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2174         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2175         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2176 };
2177
2178 /* for tim > 10 */
2179 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2180         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2181         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2182                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2183         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2184                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2185         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2186                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2187         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2188         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2189                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2190 };
2191
2192 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2193 {
2194         int rc = 0, i;
2195         struct iwl4965_power_mgr *pow_data;
2196         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2197         u16 pci_pm;
2198
2199         IWL_DEBUG_POWER("Initialize power \n");
2200
2201         pow_data = &(priv->power_data);
2202
2203         memset(pow_data, 0, sizeof(*pow_data));
2204
2205         pow_data->active_index = IWL_POWER_RANGE_0;
2206         pow_data->dtim_val = 0xffff;
2207
2208         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2209         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2210
2211         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2212         if (rc != 0)
2213                 return 0;
2214         else {
2215                 struct iwl4965_powertable_cmd *cmd;
2216
2217                 IWL_DEBUG_POWER("adjust power command flags\n");
2218
2219                 for (i = 0; i < IWL_POWER_AC; i++) {
2220                         cmd = &pow_data->pwr_range_0[i].cmd;
2221
2222                         if (pci_pm & 0x1)
2223                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2224                         else
2225                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2226                 }
2227         }
2228         return rc;
2229 }
2230
2231 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2232                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
2233 {
2234         int rc = 0, i;
2235         u8 skip;
2236         u32 max_sleep = 0;
2237         struct iwl4965_power_vec_entry *range;
2238         u8 period = 0;
2239         struct iwl4965_power_mgr *pow_data;
2240
2241         if (mode > IWL_POWER_INDEX_5) {
2242                 IWL_DEBUG_POWER("Error invalid power mode \n");
2243                 return -1;
2244         }
2245         pow_data = &(priv->power_data);
2246
2247         if (pow_data->active_index == IWL_POWER_RANGE_0)
2248                 range = &pow_data->pwr_range_0[0];
2249         else
2250                 range = &pow_data->pwr_range_1[1];
2251
2252         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2253
2254 #ifdef IWL_MAC80211_DISABLE
2255         if (priv->assoc_network != NULL) {
2256                 unsigned long flags;
2257
2258                 period = priv->assoc_network->tim.tim_period;
2259         }
2260 #endif  /*IWL_MAC80211_DISABLE */
2261         skip = range[mode].no_dtim;
2262
2263         if (period == 0) {
2264                 period = 1;
2265                 skip = 0;
2266         }
2267
2268         if (skip == 0) {
2269                 max_sleep = period;
2270                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2271         } else {
2272                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2273                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2274                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2275         }
2276
2277         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2278                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2279                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2280         }
2281
2282         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2283         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2284         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2285         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2286                         le32_to_cpu(cmd->sleep_interval[0]),
2287                         le32_to_cpu(cmd->sleep_interval[1]),
2288                         le32_to_cpu(cmd->sleep_interval[2]),
2289                         le32_to_cpu(cmd->sleep_interval[3]),
2290                         le32_to_cpu(cmd->sleep_interval[4]));
2291
2292         return rc;
2293 }
2294
2295 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2296 {
2297         u32 uninitialized_var(final_mode);
2298         int rc;
2299         struct iwl4965_powertable_cmd cmd;
2300
2301         /* If on battery, set to 3,
2302          * if plugged into AC power, set to CAM ("continuously aware mode"),
2303          * else user level */
2304         switch (mode) {
2305         case IWL_POWER_BATTERY:
2306                 final_mode = IWL_POWER_INDEX_3;
2307                 break;
2308         case IWL_POWER_AC:
2309                 final_mode = IWL_POWER_MODE_CAM;
2310                 break;
2311         default:
2312                 final_mode = mode;
2313                 break;
2314         }
2315
2316         cmd.keep_alive_beacons = 0;
2317
2318         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2319
2320         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2321
2322         if (final_mode == IWL_POWER_MODE_CAM)
2323                 clear_bit(STATUS_POWER_PMI, &priv->status);
2324         else
2325                 set_bit(STATUS_POWER_PMI, &priv->status);
2326
2327         return rc;
2328 }
2329
2330 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2331 {
2332         /* Filter incoming packets to determine if they are targeted toward
2333          * this network, discarding packets coming from ourselves */
2334         switch (priv->iw_mode) {
2335         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2336                 /* packets from our adapter are dropped (echo) */
2337                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2338                         return 0;
2339                 /* {broad,multi}cast packets to our IBSS go through */
2340                 if (is_multicast_ether_addr(header->addr1))
2341                         return !compare_ether_addr(header->addr3, priv->bssid);
2342                 /* packets to our adapter go through */
2343                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2344         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2345                 /* packets from our adapter are dropped (echo) */
2346                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2347                         return 0;
2348                 /* {broad,multi}cast packets to our BSS go through */
2349                 if (is_multicast_ether_addr(header->addr1))
2350                         return !compare_ether_addr(header->addr2, priv->bssid);
2351                 /* packets to our adapter go through */
2352                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2353         }
2354
2355         return 1;
2356 }
2357
2358 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2359
2360 static const char *iwl4965_get_tx_fail_reason(u32 status)
2361 {
2362         switch (status & TX_STATUS_MSK) {
2363         case TX_STATUS_SUCCESS:
2364                 return "SUCCESS";
2365                 TX_STATUS_ENTRY(SHORT_LIMIT);
2366                 TX_STATUS_ENTRY(LONG_LIMIT);
2367                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2368                 TX_STATUS_ENTRY(MGMNT_ABORT);
2369                 TX_STATUS_ENTRY(NEXT_FRAG);
2370                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2371                 TX_STATUS_ENTRY(DEST_PS);
2372                 TX_STATUS_ENTRY(ABORTED);
2373                 TX_STATUS_ENTRY(BT_RETRY);
2374                 TX_STATUS_ENTRY(STA_INVALID);
2375                 TX_STATUS_ENTRY(FRAG_DROPPED);
2376                 TX_STATUS_ENTRY(TID_DISABLE);
2377                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2378                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2379                 TX_STATUS_ENTRY(TX_LOCKED);
2380                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2381         }
2382
2383         return "UNKNOWN";
2384 }
2385
2386 /**
2387  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2388  *
2389  * NOTE: priv->mutex is not required before calling this function
2390  */
2391 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2392 {
2393         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2394                 clear_bit(STATUS_SCANNING, &priv->status);
2395                 return 0;
2396         }
2397
2398         if (test_bit(STATUS_SCANNING, &priv->status)) {
2399                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2400                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2401                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2402                         queue_work(priv->workqueue, &priv->abort_scan);
2403
2404                 } else
2405                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2406
2407                 return test_bit(STATUS_SCANNING, &priv->status);
2408         }
2409
2410         return 0;
2411 }
2412
2413 /**
2414  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2415  * @ms: amount of time to wait (in milliseconds) for scan to abort
2416  *
2417  * NOTE: priv->mutex must be held before calling this function
2418  */
2419 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2420 {
2421         unsigned long now = jiffies;
2422         int ret;
2423
2424         ret = iwl4965_scan_cancel(priv);
2425         if (ret && ms) {
2426                 mutex_unlock(&priv->mutex);
2427                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2428                                 test_bit(STATUS_SCANNING, &priv->status))
2429                         msleep(1);
2430                 mutex_lock(&priv->mutex);
2431
2432                 return test_bit(STATUS_SCANNING, &priv->status);
2433         }
2434
2435         return ret;
2436 }
2437
2438 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2439 {
2440         /* Reset ieee stats */
2441
2442         /* We don't reset the net_device_stats (ieee->stats) on
2443          * re-association */
2444
2445         priv->last_seq_num = -1;
2446         priv->last_frag_num = -1;
2447         priv->last_packet_time = 0;
2448
2449         iwl4965_scan_cancel(priv);
2450 }
2451
2452 #define MAX_UCODE_BEACON_INTERVAL       4096
2453 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2454
2455 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2456 {
2457         u16 new_val = 0;
2458         u16 beacon_factor = 0;
2459
2460         beacon_factor =
2461             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2462                 / MAX_UCODE_BEACON_INTERVAL;
2463         new_val = beacon_val / beacon_factor;
2464
2465         return cpu_to_le16(new_val);
2466 }
2467
2468 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2469 {
2470         u64 interval_tm_unit;
2471         u64 tsf, result;
2472         unsigned long flags;
2473         struct ieee80211_conf *conf = NULL;
2474         u16 beacon_int = 0;
2475
2476         conf = ieee80211_get_hw_conf(priv->hw);
2477
2478         spin_lock_irqsave(&priv->lock, flags);
2479         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2480         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2481
2482         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2483
2484         tsf = priv->timestamp1;
2485         tsf = ((tsf << 32) | priv->timestamp0);
2486
2487         beacon_int = priv->beacon_int;
2488         spin_unlock_irqrestore(&priv->lock, flags);
2489
2490         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2491                 if (beacon_int == 0) {
2492                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2493                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2494                 } else {
2495                         priv->rxon_timing.beacon_interval =
2496                                 cpu_to_le16(beacon_int);
2497                         priv->rxon_timing.beacon_interval =
2498                             iwl4965_adjust_beacon_interval(
2499                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2500                 }
2501
2502                 priv->rxon_timing.atim_window = 0;
2503         } else {
2504                 priv->rxon_timing.beacon_interval =
2505                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2506                 /* TODO: we need to get atim_window from upper stack
2507                  * for now we set to 0 */
2508                 priv->rxon_timing.atim_window = 0;
2509         }
2510
2511         interval_tm_unit =
2512                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2513         result = do_div(tsf, interval_tm_unit);
2514         priv->rxon_timing.beacon_init_val =
2515             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2516
2517         IWL_DEBUG_ASSOC
2518             ("beacon interval %d beacon timer %d beacon tim %d\n",
2519                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2520                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2521                 le16_to_cpu(priv->rxon_timing.atim_window));
2522 }
2523
2524 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2525 {
2526         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2527                 IWL_ERROR("APs don't scan.\n");
2528                 return 0;
2529         }
2530
2531         if (!iwl4965_is_ready_rf(priv)) {
2532                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2533                 return -EIO;
2534         }
2535
2536         if (test_bit(STATUS_SCANNING, &priv->status)) {
2537                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2538                 return -EAGAIN;
2539         }
2540
2541         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2542                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2543                                "Queuing.\n");
2544                 return -EAGAIN;
2545         }
2546
2547         IWL_DEBUG_INFO("Starting scan...\n");
2548         priv->scan_bands = 2;
2549         set_bit(STATUS_SCANNING, &priv->status);
2550         priv->scan_start = jiffies;
2551         priv->scan_pass_start = priv->scan_start;
2552
2553         queue_work(priv->workqueue, &priv->request_scan);
2554
2555         return 0;
2556 }
2557
2558 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2559 {
2560         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2561
2562         if (hw_decrypt)
2563                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2564         else
2565                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2566
2567         return 0;
2568 }
2569
2570 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv,
2571                                           enum ieee80211_band band)
2572 {
2573         if (band == IEEE80211_BAND_5GHZ) {
2574                 priv->staging_rxon.flags &=
2575                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2576                       | RXON_FLG_CCK_MSK);
2577                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2578         } else {
2579                 /* Copied from iwl4965_bg_post_associate() */
2580                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2581                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2582                 else
2583                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2584
2585                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2586                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2587
2588                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2589                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2590                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2591         }
2592 }
2593
2594 /*
2595  * initialize rxon structure with default values from eeprom
2596  */
2597 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2598 {
2599         const struct iwl4965_channel_info *ch_info;
2600
2601         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2602
2603         switch (priv->iw_mode) {
2604         case IEEE80211_IF_TYPE_AP:
2605                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2606                 break;
2607
2608         case IEEE80211_IF_TYPE_STA:
2609                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2610                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2611                 break;
2612
2613         case IEEE80211_IF_TYPE_IBSS:
2614                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2615                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2616                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2617                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2618                 break;
2619
2620         case IEEE80211_IF_TYPE_MNTR:
2621                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2622                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2623                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2624                 break;
2625         }
2626
2627 #if 0
2628         /* TODO:  Figure out when short_preamble would be set and cache from
2629          * that */
2630         if (!hw_to_local(priv->hw)->short_preamble)
2631                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2632         else
2633                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2634 #endif
2635
2636         ch_info = iwl4965_get_channel_info(priv, priv->band,
2637                                        le16_to_cpu(priv->staging_rxon.channel));
2638
2639         if (!ch_info)
2640                 ch_info = &priv->channel_info[0];
2641
2642         /*
2643          * in some case A channels are all non IBSS
2644          * in this case force B/G channel
2645          */
2646         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2647             !(is_channel_ibss(ch_info)))
2648                 ch_info = &priv->channel_info[0];
2649
2650         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2651         priv->band = ch_info->band;
2652
2653         iwl4965_set_flags_for_phymode(priv, priv->band);
2654
2655         priv->staging_rxon.ofdm_basic_rates =
2656             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2657         priv->staging_rxon.cck_basic_rates =
2658             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2659
2660         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2661                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2662         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2663         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2664         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2665         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2666         iwl4965_set_rxon_chain(priv);
2667 }
2668
2669 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2670 {
2671         if (mode == IEEE80211_IF_TYPE_IBSS) {
2672                 const struct iwl4965_channel_info *ch_info;
2673
2674                 ch_info = iwl4965_get_channel_info(priv,
2675                         priv->band,
2676                         le16_to_cpu(priv->staging_rxon.channel));
2677
2678                 if (!ch_info || !is_channel_ibss(ch_info)) {
2679                         IWL_ERROR("channel %d not IBSS channel\n",
2680                                   le16_to_cpu(priv->staging_rxon.channel));
2681                         return -EINVAL;
2682                 }
2683         }
2684
2685         priv->iw_mode = mode;
2686
2687         iwl4965_connection_init_rx_config(priv);
2688         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2689
2690         iwl4965_clear_stations_table(priv);
2691
2692         /* dont commit rxon if rf-kill is on*/
2693         if (!iwl4965_is_ready_rf(priv))
2694                 return -EAGAIN;
2695
2696         cancel_delayed_work(&priv->scan_check);
2697         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2698                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2699                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2700                 return -EAGAIN;
2701         }
2702
2703         iwl4965_commit_rxon(priv);
2704
2705         return 0;
2706 }
2707
2708 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2709                                       struct ieee80211_tx_control *ctl,
2710                                       struct iwl4965_cmd *cmd,
2711                                       struct sk_buff *skb_frag,
2712                                       int last_frag)
2713 {
2714         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2715
2716         switch (keyinfo->alg) {
2717         case ALG_CCMP:
2718                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2719                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2720                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2721                 break;
2722
2723         case ALG_TKIP:
2724 #if 0
2725                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2726
2727                 if (last_frag)
2728                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2729                                8);
2730                 else
2731                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2732 #endif
2733                 break;
2734
2735         case ALG_WEP:
2736                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2737                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2738
2739                 if (keyinfo->keylen == 13)
2740                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2741
2742                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2743
2744                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2745                              "with key %d\n", ctl->key_idx);
2746                 break;
2747
2748         default:
2749                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2750                 break;
2751         }
2752 }
2753
2754 /*
2755  * handle build REPLY_TX command notification.
2756  */
2757 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2758                                   struct iwl4965_cmd *cmd,
2759                                   struct ieee80211_tx_control *ctrl,
2760                                   struct ieee80211_hdr *hdr,
2761                                   int is_unicast, u8 std_id)
2762 {
2763         __le16 *qc;
2764         u16 fc = le16_to_cpu(hdr->frame_control);
2765         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2766
2767         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2768         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2769                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2770                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2771                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2772                 if (ieee80211_is_probe_response(fc) &&
2773                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2774                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2775         } else {
2776                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2777                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2778         }
2779
2780         if (ieee80211_is_back_request(fc))
2781                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2782
2783
2784         cmd->cmd.tx.sta_id = std_id;
2785         if (ieee80211_get_morefrag(hdr))
2786                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2787
2788         qc = ieee80211_get_qos_ctrl(hdr);
2789         if (qc) {
2790                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2791                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2792         } else
2793                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2794
2795         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2796                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2797                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2798         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2799                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2800                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2801         }
2802
2803         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2804                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2805
2806         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2807         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2808                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2809                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2810                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2811                 else
2812                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2813         } else
2814                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2815
2816         cmd->cmd.tx.driver_txop = 0;
2817         cmd->cmd.tx.tx_flags = tx_flags;
2818         cmd->cmd.tx.next_frame_len = 0;
2819 }
2820
2821 /**
2822  * iwl4965_get_sta_id - Find station's index within station table
2823  *
2824  * If new IBSS station, create new entry in station table
2825  */
2826 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2827                                 struct ieee80211_hdr *hdr)
2828 {
2829         int sta_id;
2830         u16 fc = le16_to_cpu(hdr->frame_control);
2831         DECLARE_MAC_BUF(mac);
2832
2833         /* If this frame is broadcast or management, use broadcast station id */
2834         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2835             is_multicast_ether_addr(hdr->addr1))
2836                 return priv->hw_setting.bcast_sta_id;
2837
2838         switch (priv->iw_mode) {
2839
2840         /* If we are a client station in a BSS network, use the special
2841          * AP station entry (that's the only station we communicate with) */
2842         case IEEE80211_IF_TYPE_STA:
2843                 return IWL_AP_ID;
2844
2845         /* If we are an AP, then find the station, or use BCAST */
2846         case IEEE80211_IF_TYPE_AP:
2847                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2848                 if (sta_id != IWL_INVALID_STATION)
2849                         return sta_id;
2850                 return priv->hw_setting.bcast_sta_id;
2851
2852         /* If this frame is going out to an IBSS network, find the station,
2853          * or create a new station table entry */
2854         case IEEE80211_IF_TYPE_IBSS:
2855                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2856                 if (sta_id != IWL_INVALID_STATION)
2857                         return sta_id;
2858
2859                 /* Create new station table entry */
2860                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2861                                                    0, CMD_ASYNC, NULL);
2862
2863                 if (sta_id != IWL_INVALID_STATION)
2864                         return sta_id;
2865
2866                 IWL_DEBUG_DROP("Station %s not in station map. "
2867                                "Defaulting to broadcast...\n",
2868                                print_mac(mac, hdr->addr1));
2869                 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2870                 return priv->hw_setting.bcast_sta_id;
2871
2872         default:
2873                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2874                 return priv->hw_setting.bcast_sta_id;
2875         }
2876 }
2877
2878 /*
2879  * start REPLY_TX command process
2880  */
2881 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2882                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2883 {
2884         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2885         struct iwl4965_tfd_frame *tfd;
2886         u32 *control_flags;
2887         int txq_id = ctl->queue;
2888         struct iwl4965_tx_queue *txq = NULL;
2889         struct iwl4965_queue *q = NULL;
2890         dma_addr_t phys_addr;
2891         dma_addr_t txcmd_phys;
2892         dma_addr_t scratch_phys;
2893         struct iwl4965_cmd *out_cmd = NULL;
2894         u16 len, idx, len_org;
2895         u8 id, hdr_len, unicast;
2896         u8 sta_id;
2897         u16 seq_number = 0;
2898         u16 fc;
2899         __le16 *qc;
2900         u8 wait_write_ptr = 0;
2901         unsigned long flags;
2902         int rc;
2903
2904         spin_lock_irqsave(&priv->lock, flags);
2905         if (iwl4965_is_rfkill(priv)) {
2906                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2907                 goto drop_unlock;
2908         }
2909
2910         if (!priv->vif) {
2911                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2912                 goto drop_unlock;
2913         }
2914
2915         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2916                 IWL_ERROR("ERROR: No TX rate available.\n");
2917                 goto drop_unlock;
2918         }
2919
2920         unicast = !is_multicast_ether_addr(hdr->addr1);
2921         id = 0;
2922
2923         fc = le16_to_cpu(hdr->frame_control);
2924
2925 #ifdef CONFIG_IWL4965_DEBUG
2926         if (ieee80211_is_auth(fc))
2927                 IWL_DEBUG_TX("Sending AUTH frame\n");
2928         else if (ieee80211_is_assoc_request(fc))
2929                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2930         else if (ieee80211_is_reassoc_request(fc))
2931                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2932 #endif
2933
2934         /* drop all data frame if we are not associated */
2935         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2936            (!iwl4965_is_associated(priv) ||
2937             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2938             !priv->assoc_station_added)) {
2939                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2940                 goto drop_unlock;
2941         }
2942
2943         spin_unlock_irqrestore(&priv->lock, flags);
2944
2945         hdr_len = ieee80211_get_hdrlen(fc);
2946
2947         /* Find (or create) index into station table for destination station */
2948         sta_id = iwl4965_get_sta_id(priv, hdr);
2949         if (sta_id == IWL_INVALID_STATION) {
2950                 DECLARE_MAC_BUF(mac);
2951
2952                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2953                                print_mac(mac, hdr->addr1));
2954                 goto drop;
2955         }
2956
2957         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2958
2959         qc = ieee80211_get_qos_ctrl(hdr);
2960         if (qc) {
2961                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2962                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2963                                 IEEE80211_SCTL_SEQ;
2964                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2965                         (hdr->seq_ctrl &
2966                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2967                 seq_number += 0x10;
2968 #ifdef CONFIG_IWL4965_HT
2969                 /* aggregation is on for this <sta,tid> */
2970                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2971                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2972                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2973 #endif /* CONFIG_IWL4965_HT */
2974         }
2975
2976         /* Descriptor for chosen Tx queue */
2977         txq = &priv->txq[txq_id];
2978         q = &txq->q;
2979
2980         spin_lock_irqsave(&priv->lock, flags);
2981
2982         /* Set up first empty TFD within this queue's circular TFD buffer */
2983         tfd = &txq->bd[q->write_ptr];
2984         memset(tfd, 0, sizeof(*tfd));
2985         control_flags = (u32 *) tfd;
2986         idx = get_cmd_index(q, q->write_ptr, 0);
2987
2988         /* Set up driver data for this TFD */
2989         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2990         txq->txb[q->write_ptr].skb[0] = skb;
2991         memcpy(&(txq->txb[q->write_ptr].status.control),
2992                ctl, sizeof(struct ieee80211_tx_control));
2993
2994         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2995         out_cmd = &txq->cmd[idx];
2996         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2997         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2998
2999         /*
3000          * Set up the Tx-command (not MAC!) header.
3001          * Store the chosen Tx queue and TFD index within the sequence field;
3002          * after Tx, uCode's Tx response will return this value so driver can
3003          * locate the frame within the tx queue and do post-tx processing.
3004          */
3005         out_cmd->hdr.cmd = REPLY_TX;
3006         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
3007                                 INDEX_TO_SEQ(q->write_ptr)));
3008
3009         /* Copy MAC header from skb into command buffer */
3010         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
3011
3012         /*
3013          * Use the first empty entry in this queue's command buffer array
3014          * to contain the Tx command and MAC header concatenated together
3015          * (payload data will be in another buffer).
3016          * Size of this varies, due to varying MAC header length.
3017          * If end is not dword aligned, we'll have 2 extra bytes at the end
3018          * of the MAC header (device reads on dword boundaries).
3019          * We'll tell device about this padding later.
3020          */
3021         len = priv->hw_setting.tx_cmd_len +
3022                 sizeof(struct iwl4965_cmd_header) + hdr_len;
3023
3024         len_org = len;
3025         len = (len + 3) & ~3;
3026
3027         if (len_org != len)
3028                 len_org = 1;
3029         else
3030                 len_org = 0;
3031
3032         /* Physical address of this Tx command's header (not MAC header!),
3033          * within command buffer array. */
3034         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3035                      offsetof(struct iwl4965_cmd, hdr);
3036
3037         /* Add buffer containing Tx command and MAC(!) header to TFD's
3038          * first entry */
3039         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3040
3041         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
3042                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3043
3044         /* Set up TFD's 2nd entry to point directly to remainder of skb,
3045          * if any (802.11 null frames have no payload). */
3046         len = skb->len - hdr_len;
3047         if (len) {
3048                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3049                                            len, PCI_DMA_TODEVICE);
3050                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3051         }
3052
3053         /* Tell 4965 about any 2-byte padding after MAC header */
3054         if (len_org)
3055                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3056
3057         /* Total # bytes to be transmitted */
3058         len = (u16)skb->len;
3059         out_cmd->cmd.tx.len = cpu_to_le16(len);
3060
3061         /* TODO need this for burst mode later on */
3062         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3063
3064         /* set is_hcca to 0; it probably will never be implemented */
3065         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3066
3067         scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
3068                 offsetof(struct iwl4965_tx_cmd, scratch);
3069         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
3070         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
3071
3072         if (!ieee80211_get_morefrag(hdr)) {
3073                 txq->need_update = 1;
3074                 if (qc) {
3075                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3076                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
3077                 }
3078         } else {
3079                 wait_write_ptr = 1;
3080                 txq->need_update = 0;
3081         }
3082
3083         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3084                            sizeof(out_cmd->cmd.tx));
3085
3086         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3087                            ieee80211_get_hdrlen(fc));
3088
3089         /* Set up entry for this TFD in Tx byte-count array */
3090         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3091
3092         /* Tell device the write index *just past* this latest filled TFD */
3093         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3094         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3095         spin_unlock_irqrestore(&priv->lock, flags);
3096
3097         if (rc)
3098                 return rc;
3099
3100         if ((iwl4965_queue_space(q) < q->high_mark)
3101             && priv->mac80211_registered) {
3102                 if (wait_write_ptr) {
3103                         spin_lock_irqsave(&priv->lock, flags);
3104                         txq->need_update = 1;
3105                         iwl4965_tx_queue_update_write_ptr(priv, txq);
3106                         spin_unlock_irqrestore(&priv->lock, flags);
3107                 }
3108
3109                 ieee80211_stop_queue(priv->hw, ctl->queue);
3110         }
3111
3112         return 0;
3113
3114 drop_unlock:
3115         spin_unlock_irqrestore(&priv->lock, flags);
3116 drop:
3117         return -1;
3118 }
3119
3120 static void iwl4965_set_rate(struct iwl4965_priv *priv)
3121 {
3122         const struct ieee80211_supported_band *hw = NULL;
3123         struct ieee80211_rate *rate;
3124         int i;
3125
3126         hw = iwl4965_get_hw_mode(priv, priv->band);
3127         if (!hw) {
3128                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3129                 return;
3130         }
3131
3132         priv->active_rate = 0;
3133         priv->active_rate_basic = 0;
3134
3135         for (i = 0; i < hw->n_bitrates; i++) {
3136                 rate = &(hw->bitrates[i]);
3137                 if (rate->hw_value < IWL_RATE_COUNT)
3138                         priv->active_rate |= (1 << rate->hw_value);
3139         }
3140
3141         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3142                        priv->active_rate, priv->active_rate_basic);
3143
3144         /*
3145          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3146          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3147          * OFDM
3148          */
3149         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3150                 priv->staging_rxon.cck_basic_rates =
3151                     ((priv->active_rate_basic &
3152                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3153         else
3154                 priv->staging_rxon.cck_basic_rates =
3155                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3156
3157         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3158                 priv->staging_rxon.ofdm_basic_rates =
3159                     ((priv->active_rate_basic &
3160                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3161                       IWL_FIRST_OFDM_RATE) & 0xFF;
3162         else
3163                 priv->staging_rxon.ofdm_basic_rates =
3164                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3165 }
3166
3167 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3168 {
3169         unsigned long flags;
3170
3171         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3172                 return;
3173
3174         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3175                           disable_radio ? "OFF" : "ON");
3176
3177         if (disable_radio) {
3178                 iwl4965_scan_cancel(priv);
3179                 /* FIXME: This is a workaround for AP */
3180                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3181                         spin_lock_irqsave(&priv->lock, flags);
3182                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3183                                     CSR_UCODE_SW_BIT_RFKILL);
3184                         spin_unlock_irqrestore(&priv->lock, flags);
3185                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3186                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3187                 }
3188                 return;
3189         }
3190
3191         spin_lock_irqsave(&priv->lock, flags);
3192         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3193
3194         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3195         spin_unlock_irqrestore(&priv->lock, flags);
3196
3197         /* wake up ucode */
3198         msleep(10);
3199
3200         spin_lock_irqsave(&priv->lock, flags);
3201         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3202         if (!iwl4965_grab_nic_access(priv))
3203                 iwl4965_release_nic_access(priv);
3204         spin_unlock_irqrestore(&priv->lock, flags);
3205
3206         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3207                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3208                                   "disabled by HW switch\n");
3209                 return;
3210         }
3211
3212         queue_work(priv->workqueue, &priv->restart);
3213         return;
3214 }
3215
3216 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3217                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3218 {
3219         u16 fc =
3220             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3221
3222         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3223                 return;
3224
3225         if (!(fc & IEEE80211_FCTL_PROTECTED))
3226                 return;
3227
3228         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3229         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3230         case RX_RES_STATUS_SEC_TYPE_TKIP:
3231                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3232                     RX_RES_STATUS_BAD_ICV_MIC)
3233                         stats->flag |= RX_FLAG_MMIC_ERROR;
3234         case RX_RES_STATUS_SEC_TYPE_WEP:
3235         case RX_RES_STATUS_SEC_TYPE_CCMP:
3236                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3237                     RX_RES_STATUS_DECRYPT_OK) {
3238                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3239                         stats->flag |= RX_FLAG_DECRYPTED;
3240                 }
3241                 break;
3242
3243         default:
3244                 break;
3245         }
3246 }
3247
3248
3249 #define IWL_PACKET_RETRY_TIME HZ
3250
3251 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3252 {
3253         u16 sc = le16_to_cpu(header->seq_ctrl);
3254         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3255         u16 frag = sc & IEEE80211_SCTL_FRAG;
3256         u16 *last_seq, *last_frag;
3257         unsigned long *last_time;
3258
3259         switch (priv->iw_mode) {
3260         case IEEE80211_IF_TYPE_IBSS:{
3261                 struct list_head *p;
3262                 struct iwl4965_ibss_seq *entry = NULL;
3263                 u8 *mac = header->addr2;
3264                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3265
3266                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3267                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
3268                         if (!compare_ether_addr(entry->mac, mac))
3269                                 break;
3270                 }
3271                 if (p == &priv->ibss_mac_hash[index]) {
3272                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3273                         if (!entry) {
3274                                 IWL_ERROR("Cannot malloc new mac entry\n");
3275                                 return 0;
3276                         }
3277                         memcpy(entry->mac, mac, ETH_ALEN);
3278                         entry->seq_num = seq;
3279                         entry->frag_num = frag;
3280                         entry->packet_time = jiffies;
3281                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3282                         return 0;
3283                 }
3284                 last_seq = &entry->seq_num;
3285                 last_frag = &entry->frag_num;
3286                 last_time = &entry->packet_time;
3287                 break;
3288         }
3289         case IEEE80211_IF_TYPE_STA:
3290                 last_seq = &priv->last_seq_num;
3291                 last_frag = &priv->last_frag_num;
3292                 last_time = &priv->last_packet_time;
3293                 break;
3294         default:
3295                 return 0;
3296         }
3297         if ((*last_seq == seq) &&
3298             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3299                 if (*last_frag == frag)
3300                         goto drop;
3301                 if (*last_frag + 1 != frag)
3302                         /* out-of-order fragment */
3303                         goto drop;
3304         } else
3305                 *last_seq = seq;
3306
3307         *last_frag = frag;
3308         *last_time = jiffies;
3309         return 0;
3310
3311  drop:
3312         return 1;
3313 }
3314
3315 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3316
3317 #include "iwl-spectrum.h"
3318
3319 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3320 #define BEACON_TIME_MASK_HIGH   0xFF000000
3321 #define TIME_UNIT               1024
3322
3323 /*
3324  * extended beacon time format
3325  * time in usec will be changed into a 32-bit value in 8:24 format
3326  * the high 1 byte is the beacon counts
3327  * the lower 3 bytes is the time in usec within one beacon interval
3328  */
3329
3330 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3331 {
3332         u32 quot;
3333         u32 rem;
3334         u32 interval = beacon_interval * 1024;
3335
3336         if (!interval || !usec)
3337                 return 0;
3338
3339         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3340         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3341
3342         return (quot << 24) + rem;
3343 }
3344
3345 /* base is usually what we get from ucode with each received frame,
3346  * the same as HW timer counter counting down
3347  */
3348
3349 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3350 {
3351         u32 base_low = base & BEACON_TIME_MASK_LOW;
3352         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3353         u32 interval = beacon_interval * TIME_UNIT;
3354         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3355             (addon & BEACON_TIME_MASK_HIGH);
3356
3357         if (base_low > addon_low)
3358                 res += base_low - addon_low;
3359         else if (base_low < addon_low) {
3360                 res += interval + base_low - addon_low;
3361                 res += (1 << 24);
3362         } else
3363                 res += (1 << 24);
3364
3365         return cpu_to_le32(res);
3366 }
3367
3368 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3369                                struct ieee80211_measurement_params *params,
3370                                u8 type)
3371 {
3372         struct iwl4965_spectrum_cmd spectrum;
3373         struct iwl4965_rx_packet *res;
3374         struct iwl4965_host_cmd cmd = {
3375                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3376                 .data = (void *)&spectrum,
3377                 .meta.flags = CMD_WANT_SKB,
3378         };
3379         u32 add_time = le64_to_cpu(params->start_time);
3380         int rc;
3381         int spectrum_resp_status;
3382         int duration = le16_to_cpu(params->duration);
3383
3384         if (iwl4965_is_associated(priv))
3385                 add_time =
3386                     iwl4965_usecs_to_beacons(
3387                         le64_to_cpu(params->start_time) - priv->last_tsf,
3388                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3389
3390         memset(&spectrum, 0, sizeof(spectrum));
3391
3392         spectrum.channel_count = cpu_to_le16(1);
3393         spectrum.flags =
3394             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3395         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3396         cmd.len = sizeof(spectrum);
3397         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3398
3399         if (iwl4965_is_associated(priv))
3400                 spectrum.start_time =
3401                     iwl4965_add_beacon_time(priv->last_beacon_time,
3402                                 add_time,
3403                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3404         else
3405                 spectrum.start_time = 0;
3406
3407         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3408         spectrum.channels[0].channel = params->channel;
3409         spectrum.channels[0].type = type;
3410         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3411                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3412                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3413
3414         rc = iwl4965_send_cmd_sync(priv, &cmd);
3415         if (rc)
3416                 return rc;
3417
3418         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3419         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3420                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3421                 rc = -EIO;
3422         }
3423
3424         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3425         switch (spectrum_resp_status) {
3426         case 0:         /* Command will be handled */
3427                 if (res->u.spectrum.id != 0xff) {
3428                         IWL_DEBUG_INFO
3429                             ("Replaced existing measurement: %d\n",
3430                              res->u.spectrum.id);
3431                         priv->measurement_status &= ~MEASUREMENT_READY;
3432                 }
3433                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3434                 rc = 0;
3435                 break;
3436
3437         case 1:         /* Command will not be handled */
3438                 rc = -EAGAIN;
3439                 break;
3440         }
3441
3442         dev_kfree_skb_any(cmd.meta.u.skb);
3443
3444         return rc;
3445 }
3446 #endif
3447
3448 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3449                                  struct iwl4965_tx_info *tx_sta)
3450 {
3451
3452         tx_sta->status.ack_signal = 0;
3453         tx_sta->status.excessive_retries = 0;
3454         tx_sta->status.queue_length = 0;
3455         tx_sta->status.queue_number = 0;
3456
3457         if (in_interrupt())
3458                 ieee80211_tx_status_irqsafe(priv->hw,
3459                                             tx_sta->skb[0], &(tx_sta->status));
3460         else
3461                 ieee80211_tx_status(priv->hw,
3462                                     tx_sta->skb[0], &(tx_sta->status));
3463
3464         tx_sta->skb[0] = NULL;
3465 }
3466
3467 /**
3468  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3469  *
3470  * When FW advances 'R' index, all entries between old and new 'R' index
3471  * need to be reclaimed. As result, some free space forms.  If there is
3472  * enough free space (> low mark), wake the stack that feeds us.
3473  */
3474 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3475 {
3476         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3477         struct iwl4965_queue *q = &txq->q;
3478         int nfreed = 0;
3479
3480         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3481                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3482                           "is out of range [0-%d] %d %d.\n", txq_id,
3483                           index, q->n_bd, q->write_ptr, q->read_ptr);
3484                 return 0;
3485         }
3486
3487         for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3488                 q->read_ptr != index;
3489                 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3490                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3491                         iwl4965_txstatus_to_ieee(priv,
3492                                         &(txq->txb[txq->q.read_ptr]));
3493                         iwl4965_hw_txq_free_tfd(priv, txq);
3494                 } else if (nfreed > 1) {
3495                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3496                                         q->write_ptr, q->read_ptr);
3497                         queue_work(priv->workqueue, &priv->restart);
3498                 }
3499                 nfreed++;
3500         }
3501
3502 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3503                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3504                         priv->mac80211_registered)
3505                 ieee80211_wake_queue(priv->hw, txq_id); */
3506
3507
3508         return nfreed;
3509 }
3510
3511 static int iwl4965_is_tx_success(u32 status)
3512 {
3513         status &= TX_STATUS_MSK;
3514         return (status == TX_STATUS_SUCCESS)
3515             || (status == TX_STATUS_DIRECT_DONE);
3516 }
3517
3518 /******************************************************************************
3519  *
3520  * Generic RX handler implementations
3521  *
3522  ******************************************************************************/
3523 #ifdef CONFIG_IWL4965_HT
3524
3525 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3526                                     struct ieee80211_hdr *hdr)
3527 {
3528         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3529                 return IWL_AP_ID;
3530         else {
3531                 u8 *da = ieee80211_get_DA(hdr);
3532                 return iwl4965_hw_find_station(priv, da);
3533         }
3534 }
3535
3536 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3537         struct iwl4965_priv *priv, int txq_id, int idx)
3538 {
3539         if (priv->txq[txq_id].txb[idx].skb[0])
3540                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3541                                 txb[idx].skb[0]->data;
3542         return NULL;
3543 }
3544
3545 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3546 {
3547         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3548                                 tx_resp->frame_count);
3549         return le32_to_cpu(*scd_ssn) & MAX_SN;
3550
3551 }
3552
3553 /**
3554  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3555  */
3556 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3557                                       struct iwl4965_ht_agg *agg,
3558                                       struct iwl4965_tx_resp_agg *tx_resp,
3559                                       u16 start_idx)
3560 {
3561         u16 status;
3562         struct agg_tx_status *frame_status = &tx_resp->status;
3563         struct ieee80211_tx_status *tx_status = NULL;
3564         struct ieee80211_hdr *hdr = NULL;
3565         int i, sh;
3566         int txq_id, idx;
3567         u16 seq;
3568
3569         if (agg->wait_for_ba)
3570                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3571
3572         agg->frame_count = tx_resp->frame_count;
3573         agg->start_idx = start_idx;
3574         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3575         agg->bitmap = 0;
3576
3577         /* # frames attempted by Tx command */
3578         if (agg->frame_count == 1) {
3579                 /* Only one frame was attempted; no block-ack will arrive */
3580                 status = le16_to_cpu(frame_status[0].status);
3581                 seq  = le16_to_cpu(frame_status[0].sequence);
3582                 idx = SEQ_TO_INDEX(seq);
3583                 txq_id = SEQ_TO_QUEUE(seq);
3584
3585                 /* FIXME: code repetition */
3586                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3587                                    agg->frame_count, agg->start_idx, idx);
3588
3589                 tx_status = &(priv->txq[txq_id].txb[idx].status);
3590                 tx_status->retry_count = tx_resp->failure_frame;
3591                 tx_status->queue_number = status & 0xff;
3592                 tx_status->queue_length = tx_resp->failure_rts;
3593                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3594                 tx_status->flags = iwl4965_is_tx_success(status)?
3595                         IEEE80211_TX_STATUS_ACK : 0;
3596                 /* FIXME Wrong Rate
3597                 tx_status->control.tx_rate =
3598                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags); */
3599                 /* FIXME: code repetition end */
3600
3601                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3602                                     status & 0xff, tx_resp->failure_frame);
3603                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3604                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3605
3606                 agg->wait_for_ba = 0;
3607         } else {
3608                 /* Two or more frames were attempted; expect block-ack */
3609                 u64 bitmap = 0;
3610                 int start = agg->start_idx;
3611
3612                 /* Construct bit-map of pending frames within Tx window */
3613                 for (i = 0; i < agg->frame_count; i++) {
3614                         u16 sc;
3615                         status = le16_to_cpu(frame_status[i].status);
3616                         seq  = le16_to_cpu(frame_status[i].sequence);
3617                         idx = SEQ_TO_INDEX(seq);
3618                         txq_id = SEQ_TO_QUEUE(seq);
3619
3620                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3621                                       AGG_TX_STATE_ABORT_MSK))
3622                                 continue;
3623
3624                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3625                                            agg->frame_count, txq_id, idx);
3626
3627                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3628
3629                         sc = le16_to_cpu(hdr->seq_ctrl);
3630                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3631                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3632                                           " idx=%d, seq_idx=%d, seq=%d\n",
3633                                           idx, SEQ_TO_SN(sc),
3634                                           hdr->seq_ctrl);
3635                                 return -1;
3636                         }
3637
3638                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3639                                            i, idx, SEQ_TO_SN(sc));
3640
3641                         sh = idx - start;
3642                         if (sh > 64) {
3643                                 sh = (start - idx) + 0xff;
3644                                 bitmap = bitmap << sh;
3645                                 sh = 0;
3646                                 start = idx;
3647                         } else if (sh < -64)
3648                                 sh  = 0xff - (start - idx);
3649                         else if (sh < 0) {
3650                                 sh = start - idx;
3651                                 start = idx;
3652                                 bitmap = bitmap << sh;
3653                                 sh = 0;
3654                         }
3655                         bitmap |= (1 << sh);
3656                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3657                                            start, (u32)(bitmap & 0xFFFFFFFF));
3658                 }
3659
3660                 agg->bitmap = bitmap;
3661                 agg->start_idx = start;
3662                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3663                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3664                                    agg->frame_count, agg->start_idx,
3665                                    agg->bitmap);
3666
3667                 if (bitmap)
3668                         agg->wait_for_ba = 1;
3669         }
3670         return 0;
3671 }
3672 #endif
3673
3674 /**
3675  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3676  */
3677 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3678                             struct iwl4965_rx_mem_buffer *rxb)
3679 {
3680         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3681         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3682         int txq_id = SEQ_TO_QUEUE(sequence);
3683         int index = SEQ_TO_INDEX(sequence);
3684         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3685         struct ieee80211_tx_status *tx_status;
3686         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3687         u32  status = le32_to_cpu(tx_resp->status);
3688 #ifdef CONFIG_IWL4965_HT
3689         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3690         struct ieee80211_hdr *hdr;
3691         __le16 *qc;
3692 #endif
3693
3694         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3695                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3696                           "is out of range [0-%d] %d %d\n", txq_id,
3697                           index, txq->q.n_bd, txq->q.write_ptr,
3698                           txq->q.read_ptr);
3699                 return;
3700         }
3701
3702 #ifdef CONFIG_IWL4965_HT
3703         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3704         qc = ieee80211_get_qos_ctrl(hdr);
3705
3706         if (qc)
3707                 tid = le16_to_cpu(*qc) & 0xf;
3708
3709         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3710         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3711                 IWL_ERROR("Station not known\n");
3712                 return;
3713         }
3714
3715         if (txq->sched_retry) {
3716                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3717                 struct iwl4965_ht_agg *agg = NULL;
3718
3719                 if (!qc)
3720                         return;
3721
3722                 agg = &priv->stations[sta_id].tid[tid].agg;
3723
3724                 iwl4965_tx_status_reply_tx(priv, agg,
3725                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3726
3727                 if ((tx_resp->frame_count == 1) &&
3728                     !iwl4965_is_tx_success(status)) {
3729                         /* TODO: send BAR */
3730                 }
3731
3732                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3733                         int freed;
3734                         index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3735                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3736                                            "%d index %d\n", scd_ssn , index);
3737                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3738                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3739
3740                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3741                             txq_id >= 0 && priv->mac80211_registered &&
3742                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3743                                 ieee80211_wake_queue(priv->hw, txq_id);
3744
3745                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3746                 }
3747         } else {
3748 #endif /* CONFIG_IWL4965_HT */
3749         tx_status = &(txq->txb[txq->q.read_ptr].status);
3750
3751         tx_status->retry_count = tx_resp->failure_frame;
3752         tx_status->queue_number = status;
3753         tx_status->queue_length = tx_resp->bt_kill_count;
3754         tx_status->queue_length |= tx_resp->failure_rts;
3755
3756         tx_status->flags =
3757             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3758
3759         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3760                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3761                      status, le32_to_cpu(tx_resp->rate_n_flags),
3762                      tx_resp->failure_frame);
3763
3764         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3765         if (index != -1) {
3766                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3767 #ifdef CONFIG_IWL4965_HT
3768                 if (tid != MAX_TID_COUNT)
3769                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3770                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3771                         (txq_id >= 0) &&
3772                         priv->mac80211_registered)
3773                         ieee80211_wake_queue(priv->hw, txq_id);
3774                 if (tid != MAX_TID_COUNT)
3775                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3776 #endif
3777         }
3778 #ifdef CONFIG_IWL4965_HT
3779         }
3780 #endif /* CONFIG_IWL4965_HT */
3781
3782         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3783                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3784 }
3785
3786
3787 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3788                                struct iwl4965_rx_mem_buffer *rxb)
3789 {
3790         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3791         struct iwl4965_alive_resp *palive;
3792         struct delayed_work *pwork;
3793
3794         palive = &pkt->u.alive_frame;
3795
3796         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3797                        "0x%01X 0x%01X\n",
3798                        palive->is_valid, palive->ver_type,
3799                        palive->ver_subtype);
3800
3801         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3802                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3803                 memcpy(&priv->card_alive_init,
3804                        &pkt->u.alive_frame,
3805                        sizeof(struct iwl4965_init_alive_resp));
3806                 pwork = &priv->init_alive_start;
3807         } else {
3808                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3809                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3810                        sizeof(struct iwl4965_alive_resp));
3811                 pwork = &priv->alive_start;
3812         }
3813
3814         /* We delay the ALIVE response by 5ms to
3815          * give the HW RF Kill time to activate... */
3816         if (palive->is_valid == UCODE_VALID_OK)
3817                 queue_delayed_work(priv->workqueue, pwork,
3818                                    msecs_to_jiffies(5));
3819         else
3820                 IWL_WARNING("uCode did not respond OK.\n");
3821 }
3822
3823 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3824                                  struct iwl4965_rx_mem_buffer *rxb)
3825 {
3826         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3827
3828         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3829         return;
3830 }
3831
3832 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3833                                struct iwl4965_rx_mem_buffer *rxb)
3834 {
3835         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3836
3837         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3838                 "seq 0x%04X ser 0x%08X\n",
3839                 le32_to_cpu(pkt->u.err_resp.error_type),
3840                 get_cmd_string(pkt->u.err_resp.cmd_id),
3841                 pkt->u.err_resp.cmd_id,
3842                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3843                 le32_to_cpu(pkt->u.err_resp.error_info));
3844 }
3845
3846 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3847
3848 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3849 {
3850         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3851         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3852         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3853         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3854                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3855         rxon->channel = csa->channel;
3856         priv->staging_rxon.channel = csa->channel;
3857 }
3858
3859 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3860                                           struct iwl4965_rx_mem_buffer *rxb)
3861 {
3862 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3863         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3864         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3865
3866         if (!report->state) {
3867                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3868                           "Spectrum Measure Notification: Start\n");
3869                 return;
3870         }
3871
3872         memcpy(&priv->measure_report, report, sizeof(*report));
3873         priv->measurement_status |= MEASUREMENT_READY;
3874 #endif
3875 }
3876
3877 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3878                                   struct iwl4965_rx_mem_buffer *rxb)
3879 {
3880 #ifdef CONFIG_IWL4965_DEBUG
3881         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3882         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3883         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3884                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3885 #endif
3886 }
3887
3888 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3889                                              struct iwl4965_rx_mem_buffer *rxb)
3890 {
3891         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3892         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3893                         "notification for %s:\n",
3894                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3895         iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3896 }
3897
3898 static void iwl4965_bg_beacon_update(struct work_struct *work)
3899 {
3900         struct iwl4965_priv *priv =
3901                 container_of(work, struct iwl4965_priv, beacon_update);
3902         struct sk_buff *beacon;
3903
3904         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3905         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3906
3907         if (!beacon) {
3908                 IWL_ERROR("update beacon failed\n");
3909                 return;
3910         }
3911
3912         mutex_lock(&priv->mutex);
3913         /* new beacon skb is allocated every time; dispose previous.*/
3914         if (priv->ibss_beacon)
3915                 dev_kfree_skb(priv->ibss_beacon);
3916
3917         priv->ibss_beacon = beacon;
3918         mutex_unlock(&priv->mutex);
3919
3920         iwl4965_send_beacon_cmd(priv);
3921 }
3922
3923 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3924                                 struct iwl4965_rx_mem_buffer *rxb)
3925 {
3926 #ifdef CONFIG_IWL4965_DEBUG
3927         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3928         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3929         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3930
3931         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3932                 "tsf %d %d rate %d\n",
3933                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3934                 beacon->beacon_notify_hdr.failure_frame,
3935                 le32_to_cpu(beacon->ibss_mgr_status),
3936                 le32_to_cpu(beacon->high_tsf),
3937                 le32_to_cpu(beacon->low_tsf), rate);
3938 #endif
3939
3940         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3941             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3942                 queue_work(priv->workqueue, &priv->beacon_update);
3943 }
3944
3945 /* Service response to REPLY_SCAN_CMD (0x80) */
3946 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
3947                               struct iwl4965_rx_mem_buffer *rxb)
3948 {
3949 #ifdef CONFIG_IWL4965_DEBUG
3950         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3951         struct iwl4965_scanreq_notification *notif =
3952             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3953
3954         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3955 #endif
3956 }
3957
3958 /* Service SCAN_START_NOTIFICATION (0x82) */
3959 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
3960                                     struct iwl4965_rx_mem_buffer *rxb)
3961 {
3962         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3963         struct iwl4965_scanstart_notification *notif =
3964             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3965         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3966         IWL_DEBUG_SCAN("Scan start: "
3967                        "%d [802.11%s] "
3968                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3969                        notif->channel,
3970                        notif->band ? "bg" : "a",
3971                        notif->tsf_high,
3972                        notif->tsf_low, notif->status, notif->beacon_timer);
3973 }
3974
3975 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3976 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
3977                                       struct iwl4965_rx_mem_buffer *rxb)
3978 {
3979         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3980         struct iwl4965_scanresults_notification *notif =
3981             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3982
3983         IWL_DEBUG_SCAN("Scan ch.res: "
3984                        "%d [802.11%s] "
3985                        "(TSF: 0x%08X:%08X) - %d "
3986                        "elapsed=%lu usec (%dms since last)\n",
3987                        notif->channel,
3988                        notif->band ? "bg" : "a",
3989                        le32_to_cpu(notif->tsf_high),
3990                        le32_to_cpu(notif->tsf_low),
3991                        le32_to_cpu(notif->statistics[0]),
3992                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3993                        jiffies_to_msecs(elapsed_jiffies
3994                                         (priv->last_scan_jiffies, jiffies)));
3995
3996         priv->last_scan_jiffies = jiffies;
3997         priv->next_scan_jiffies = 0;
3998 }
3999
4000 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
4001 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
4002                                        struct iwl4965_rx_mem_buffer *rxb)
4003 {
4004         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4005         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
4006
4007         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
4008                        scan_notif->scanned_channels,
4009                        scan_notif->tsf_low,
4010                        scan_notif->tsf_high, scan_notif->status);
4011
4012         /* The HW is no longer scanning */
4013         clear_bit(STATUS_SCAN_HW, &priv->status);
4014
4015         /* The scan completion notification came in, so kill that timer... */
4016         cancel_delayed_work(&priv->scan_check);
4017
4018         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
4019                        (priv->scan_bands == 2) ? "2.4" : "5.2",
4020                        jiffies_to_msecs(elapsed_jiffies
4021                                         (priv->scan_pass_start, jiffies)));
4022
4023         /* Remove this scanned band from the list
4024          * of pending bands to scan */
4025         priv->scan_bands--;
4026
4027         /* If a request to abort was given, or the scan did not succeed
4028          * then we reset the scan state machine and terminate,
4029          * re-queuing another scan if one has been requested */
4030         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4031                 IWL_DEBUG_INFO("Aborted scan completed.\n");
4032                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
4033         } else {
4034                 /* If there are more bands on this scan pass reschedule */
4035                 if (priv->scan_bands > 0)
4036                         goto reschedule;
4037         }
4038
4039         priv->last_scan_jiffies = jiffies;
4040         priv->next_scan_jiffies = 0;
4041         IWL_DEBUG_INFO("Setting scan to off\n");
4042
4043         clear_bit(STATUS_SCANNING, &priv->status);
4044
4045         IWL_DEBUG_INFO("Scan took %dms\n",
4046                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4047
4048         queue_work(priv->workqueue, &priv->scan_completed);
4049
4050         return;
4051
4052 reschedule:
4053         priv->scan_pass_start = jiffies;
4054         queue_work(priv->workqueue, &priv->request_scan);
4055 }
4056
4057 /* Handle notification from uCode that card's power state is changing
4058  * due to software, hardware, or critical temperature RFKILL */
4059 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4060                                     struct iwl4965_rx_mem_buffer *rxb)
4061 {
4062         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4063         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4064         unsigned long status = priv->status;
4065
4066         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4067                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4068                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4069
4070         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4071                      RF_CARD_DISABLED)) {
4072
4073                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4074                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4075
4076                 if (!iwl4965_grab_nic_access(priv)) {
4077                         iwl4965_write_direct32(
4078                                 priv, HBUS_TARG_MBX_C,
4079                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4080
4081                         iwl4965_release_nic_access(priv);
4082                 }
4083
4084                 if (!(flags & RXON_CARD_DISABLED)) {
4085                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4086                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4087                         if (!iwl4965_grab_nic_access(priv)) {
4088                                 iwl4965_write_direct32(
4089                                         priv, HBUS_TARG_MBX_C,
4090                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4091
4092                                 iwl4965_release_nic_access(priv);
4093                         }
4094                 }
4095
4096                 if (flags & RF_CARD_DISABLED) {
4097                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4098                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4099                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4100                         if (!iwl4965_grab_nic_access(priv))
4101                                 iwl4965_release_nic_access(priv);
4102                 }
4103         }
4104
4105         if (flags & HW_CARD_DISABLED)
4106                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4107         else
4108                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4109
4110
4111         if (flags & SW_CARD_DISABLED)
4112                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4113         else
4114                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4115
4116         if (!(flags & RXON_CARD_DISABLED))
4117                 iwl4965_scan_cancel(priv);
4118
4119         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4120              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4121             (test_bit(STATUS_RF_KILL_SW, &status) !=
4122              test_bit(STATUS_RF_KILL_SW, &priv->status)))
4123                 queue_work(priv->workqueue, &priv->rf_kill);
4124         else
4125                 wake_up_interruptible(&priv->wait_command_queue);
4126 }
4127
4128 /**
4129  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4130  *
4131  * Setup the RX handlers for each of the reply types sent from the uCode
4132  * to the host.
4133  *
4134  * This function chains into the hardware specific files for them to setup
4135  * any hardware specific handlers as well.
4136  */
4137 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4138 {
4139         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4140         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4141         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4142         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4143         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4144             iwl4965_rx_spectrum_measure_notif;
4145         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4146         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4147             iwl4965_rx_pm_debug_statistics_notif;
4148         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4149
4150         /*
4151          * The same handler is used for both the REPLY to a discrete
4152          * statistics request from the host as well as for the periodic
4153          * statistics notifications (after received beacons) from the uCode.
4154          */
4155         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4156         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4157
4158         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4159         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4160         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4161             iwl4965_rx_scan_results_notif;
4162         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4163             iwl4965_rx_scan_complete_notif;
4164         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4165         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4166
4167         /* Set up hardware specific Rx handlers */
4168         iwl4965_hw_rx_handler_setup(priv);
4169 }
4170
4171 /**
4172  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4173  * @rxb: Rx buffer to reclaim
4174  *
4175  * If an Rx buffer has an async callback associated with it the callback
4176  * will be executed.  The attached skb (if present) will only be freed
4177  * if the callback returns 1
4178  */
4179 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4180                                 struct iwl4965_rx_mem_buffer *rxb)
4181 {
4182         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4183         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4184         int txq_id = SEQ_TO_QUEUE(sequence);
4185         int index = SEQ_TO_INDEX(sequence);
4186         int huge = sequence & SEQ_HUGE_FRAME;
4187         int cmd_index;
4188         struct iwl4965_cmd *cmd;
4189
4190         /* If a Tx command is being handled and it isn't in the actual
4191          * command queue then there a command routing bug has been introduced
4192          * in the queue management code. */
4193         if (txq_id != IWL_CMD_QUEUE_NUM)
4194                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4195                           txq_id, pkt->hdr.cmd);
4196         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4197
4198         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4199         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4200
4201         /* Input error checking is done when commands are added to queue. */
4202         if (cmd->meta.flags & CMD_WANT_SKB) {
4203                 cmd->meta.source->u.skb = rxb->skb;
4204                 rxb->skb = NULL;
4205         } else if (cmd->meta.u.callback &&
4206                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
4207                 rxb->skb = NULL;
4208
4209         iwl4965_tx_queue_reclaim(priv, txq_id, index);
4210
4211         if (!(cmd->meta.flags & CMD_ASYNC)) {
4212                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4213                 wake_up_interruptible(&priv->wait_command_queue);
4214         }
4215 }
4216
4217 /************************** RX-FUNCTIONS ****************************/
4218 /*
4219  * Rx theory of operation
4220  *
4221  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4222  * each of which point to Receive Buffers to be filled by 4965.  These get
4223  * used not only for Rx frames, but for any command response or notification
4224  * from the 4965.  The driver and 4965 manage the Rx buffers by means
4225  * of indexes into the circular buffer.
4226  *
4227  * Rx Queue Indexes
4228  * The host/firmware share two index registers for managing the Rx buffers.
4229  *
4230  * The READ index maps to the first position that the firmware may be writing
4231  * to -- the driver can read up to (but not including) this position and get
4232  * good data.
4233  * The READ index is managed by the firmware once the card is enabled.
4234  *
4235  * The WRITE index maps to the last position the driver has read from -- the
4236  * position preceding WRITE is the last slot the firmware can place a packet.
4237  *
4238  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4239  * WRITE = READ.
4240  *
4241  * During initialization, the host sets up the READ queue position to the first
4242  * INDEX position, and WRITE to the last (READ - 1 wrapped)
4243  *
4244  * When the firmware places a packet in a buffer, it will advance the READ index
4245  * and fire the RX interrupt.  The driver can then query the READ index and
4246  * process as many packets as possible, moving the WRITE index forward as it
4247  * resets the Rx queue buffers with new memory.
4248  *
4249  * The management in the driver is as follows:
4250  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
4251  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4252  *   to replenish the iwl->rxq->rx_free.
4253  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4254  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
4255  *   'processed' and 'read' driver indexes as well)
4256  * + A received packet is processed and handed to the kernel network stack,
4257  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
4258  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4259  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4260  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
4261  *   were enough free buffers and RX_STALLED is set it is cleared.
4262  *
4263  *
4264  * Driver sequence:
4265  *
4266  * iwl4965_rx_queue_alloc()   Allocates rx_free
4267  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
4268  *                            iwl4965_rx_queue_restock
4269  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4270  *                            queue, updates firmware pointers, and updates
4271  *                            the WRITE index.  If insufficient rx_free buffers
4272  *                            are available, schedules iwl4965_rx_replenish
4273  *
4274  * -- enable interrupts --
4275  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
4276  *                            READ INDEX, detaching the SKB from the pool.
4277  *                            Moves the packet buffer from queue to rx_used.
4278  *                            Calls iwl4965_rx_queue_restock to refill any empty
4279  *                            slots.
4280  * ...
4281  *
4282  */
4283
4284 /**
4285  * iwl4965_rx_queue_space - Return number of free slots available in queue.
4286  */
4287 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4288 {
4289         int s = q->read - q->write;
4290         if (s <= 0)
4291                 s += RX_QUEUE_SIZE;
4292         /* keep some buffer to not confuse full and empty queue */
4293         s -= 2;
4294         if (s < 0)
4295                 s = 0;
4296         return s;
4297 }
4298
4299 /**
4300  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4301  */
4302 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4303 {
4304         u32 reg = 0;
4305         int rc = 0;
4306         unsigned long flags;
4307
4308         spin_lock_irqsave(&q->lock, flags);
4309
4310         if (q->need_update == 0)
4311                 goto exit_unlock;
4312
4313         /* If power-saving is in use, make sure device is awake */
4314         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4315                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4316
4317                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4318                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4319                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4320                         goto exit_unlock;
4321                 }
4322
4323                 rc = iwl4965_grab_nic_access(priv);
4324                 if (rc)
4325                         goto exit_unlock;
4326
4327                 /* Device expects a multiple of 8 */
4328                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4329                                      q->write & ~0x7);
4330                 iwl4965_release_nic_access(priv);
4331
4332         /* Else device is assumed to be awake */
4333         } else
4334                 /* Device expects a multiple of 8 */
4335                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4336
4337
4338         q->need_update = 0;
4339
4340  exit_unlock:
4341         spin_unlock_irqrestore(&q->lock, flags);
4342         return rc;
4343 }
4344
4345 /**
4346  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4347  */
4348 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4349                                           dma_addr_t dma_addr)
4350 {
4351         return cpu_to_le32((u32)(dma_addr >> 8));
4352 }
4353
4354
4355 /**
4356  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4357  *
4358  * If there are slots in the RX queue that need to be restocked,
4359  * and we have free pre-allocated buffers, fill the ranks as much
4360  * as we can, pulling from rx_free.
4361  *
4362  * This moves the 'write' index forward to catch up with 'processed', and
4363  * also updates the memory address in the firmware to reference the new
4364  * target buffer.
4365  */
4366 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4367 {
4368         struct iwl4965_rx_queue *rxq = &priv->rxq;
4369         struct list_head *element;
4370         struct iwl4965_rx_mem_buffer *rxb;
4371         unsigned long flags;
4372         int write, rc;
4373
4374         spin_lock_irqsave(&rxq->lock, flags);
4375         write = rxq->write & ~0x7;
4376         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4377                 /* Get next free Rx buffer, remove from free list */
4378                 element = rxq->rx_free.next;
4379                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4380                 list_del(element);
4381
4382                 /* Point to Rx buffer via next RBD in circular buffer */
4383                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4384                 rxq->queue[rxq->write] = rxb;
4385                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4386                 rxq->free_count--;
4387         }
4388         spin_unlock_irqrestore(&rxq->lock, flags);
4389         /* If the pre-allocated buffer pool is dropping low, schedule to
4390          * refill it */
4391         if (rxq->free_count <= RX_LOW_WATERMARK)
4392                 queue_work(priv->workqueue, &priv->rx_replenish);
4393
4394
4395         /* If we've added more space for the firmware to place data, tell it.
4396          * Increment device's write pointer in multiples of 8. */
4397         if ((write != (rxq->write & ~0x7))
4398             || (abs(rxq->write - rxq->read) > 7)) {
4399                 spin_lock_irqsave(&rxq->lock, flags);
4400                 rxq->need_update = 1;
4401                 spin_unlock_irqrestore(&rxq->lock, flags);
4402                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4403                 if (rc)
4404                         return rc;
4405         }
4406
4407         return 0;
4408 }
4409
4410 /**
4411  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4412  *
4413  * When moving to rx_free an SKB is allocated for the slot.
4414  *
4415  * Also restock the Rx queue via iwl4965_rx_queue_restock.
4416  * This is called as a scheduled work item (except for during initialization)
4417  */
4418 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4419 {
4420         struct iwl4965_rx_queue *rxq = &priv->rxq;
4421         struct list_head *element;
4422         struct iwl4965_rx_mem_buffer *rxb;
4423         unsigned long flags;
4424         spin_lock_irqsave(&rxq->lock, flags);
4425         while (!list_empty(&rxq->rx_used)) {
4426                 element = rxq->rx_used.next;
4427                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4428
4429                 /* Alloc a new receive buffer */
4430                 rxb->skb =
4431                     alloc_skb(priv->hw_setting.rx_buf_size,
4432                                 __GFP_NOWARN | GFP_ATOMIC);
4433                 if (!rxb->skb) {
4434                         if (net_ratelimit())
4435                                 printk(KERN_CRIT DRV_NAME
4436                                        ": Can not allocate SKB buffers\n");
4437                         /* We don't reschedule replenish work here -- we will
4438                          * call the restock method and if it still needs
4439                          * more buffers it will schedule replenish */
4440                         break;
4441                 }
4442                 priv->alloc_rxb_skb++;
4443                 list_del(element);
4444
4445                 /* Get physical address of RB/SKB */
4446                 rxb->dma_addr =
4447                     pci_map_single(priv->pci_dev, rxb->skb->data,
4448                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4449                 list_add_tail(&rxb->list, &rxq->rx_free);
4450                 rxq->free_count++;
4451         }
4452         spin_unlock_irqrestore(&rxq->lock, flags);
4453 }
4454
4455 /*
4456  * this should be called while priv->lock is locked
4457 */
4458 static void __iwl4965_rx_replenish(void *data)
4459 {
4460         struct iwl4965_priv *priv = data;
4461
4462         iwl4965_rx_allocate(priv);
4463         iwl4965_rx_queue_restock(priv);
4464 }
4465
4466
4467 void iwl4965_rx_replenish(void *data)
4468 {
4469         struct iwl4965_priv *priv = data;
4470         unsigned long flags;
4471
4472         iwl4965_rx_allocate(priv);
4473
4474         spin_lock_irqsave(&priv->lock, flags);
4475         iwl4965_rx_queue_restock(priv);
4476         spin_unlock_irqrestore(&priv->lock, flags);
4477 }
4478
4479 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4480  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4481  * This free routine walks the list of POOL entries and if SKB is set to
4482  * non NULL it is unmapped and freed
4483  */
4484 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4485 {
4486         int i;
4487         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4488                 if (rxq->pool[i].skb != NULL) {
4489                         pci_unmap_single(priv->pci_dev,
4490                                          rxq->pool[i].dma_addr,
4491                                          priv->hw_setting.rx_buf_size,
4492                                          PCI_DMA_FROMDEVICE);
4493                         dev_kfree_skb(rxq->pool[i].skb);
4494                 }
4495         }
4496
4497         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4498                             rxq->dma_addr);
4499         rxq->bd = NULL;
4500 }
4501
4502 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4503 {
4504         struct iwl4965_rx_queue *rxq = &priv->rxq;
4505         struct pci_dev *dev = priv->pci_dev;
4506         int i;
4507
4508         spin_lock_init(&rxq->lock);
4509         INIT_LIST_HEAD(&rxq->rx_free);
4510         INIT_LIST_HEAD(&rxq->rx_used);
4511
4512         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4513         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4514         if (!rxq->bd)
4515                 return -ENOMEM;
4516
4517         /* Fill the rx_used queue with _all_ of the Rx buffers */
4518         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4519                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4520
4521         /* Set us so that we have processed and used all buffers, but have
4522          * not restocked the Rx queue with fresh buffers */
4523         rxq->read = rxq->write = 0;
4524         rxq->free_count = 0;
4525         rxq->need_update = 0;
4526         return 0;
4527 }
4528
4529 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4530 {
4531         unsigned long flags;
4532         int i;
4533         spin_lock_irqsave(&rxq->lock, flags);
4534         INIT_LIST_HEAD(&rxq->rx_free);
4535         INIT_LIST_HEAD(&rxq->rx_used);
4536         /* Fill the rx_used queue with _all_ of the Rx buffers */
4537         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4538                 /* In the reset function, these buffers may have been allocated
4539                  * to an SKB, so we need to unmap and free potential storage */
4540                 if (rxq->pool[i].skb != NULL) {
4541                         pci_unmap_single(priv->pci_dev,
4542                                          rxq->pool[i].dma_addr,
4543                                          priv->hw_setting.rx_buf_size,
4544                                          PCI_DMA_FROMDEVICE);
4545                         priv->alloc_rxb_skb--;
4546                         dev_kfree_skb(rxq->pool[i].skb);
4547                         rxq->pool[i].skb = NULL;
4548                 }
4549                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4550         }
4551
4552         /* Set us so that we have processed and used all buffers, but have
4553          * not restocked the Rx queue with fresh buffers */
4554         rxq->read = rxq->write = 0;
4555         rxq->free_count = 0;
4556         spin_unlock_irqrestore(&rxq->lock, flags);
4557 }
4558
4559 /* Convert linear signal-to-noise ratio into dB */
4560 static u8 ratio2dB[100] = {
4561 /*       0   1   2   3   4   5   6   7   8   9 */
4562          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4563         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4564         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4565         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4566         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4567         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4568         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4569         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4570         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4571         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4572 };
4573
4574 /* Calculates a relative dB value from a ratio of linear
4575  *   (i.e. not dB) signal levels.
4576  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4577 int iwl4965_calc_db_from_ratio(int sig_ratio)
4578 {
4579         /* 1000:1 or higher just report as 60 dB */
4580         if (sig_ratio >= 1000)
4581                 return 60;
4582
4583         /* 100:1 or higher, divide by 10 and use table,
4584          *   add 20 dB to make up for divide by 10 */
4585         if (sig_ratio >= 100)
4586                 return (20 + (int)ratio2dB[sig_ratio/10]);
4587
4588         /* We shouldn't see this */
4589         if (sig_ratio < 1)
4590                 return 0;
4591
4592         /* Use table for ratios 1:1 - 99:1 */
4593         return (int)ratio2dB[sig_ratio];
4594 }
4595
4596 #define PERFECT_RSSI (-20) /* dBm */
4597 #define WORST_RSSI (-95)   /* dBm */
4598 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4599
4600 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4601  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4602  *   about formulas used below. */
4603 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4604 {
4605         int sig_qual;
4606         int degradation = PERFECT_RSSI - rssi_dbm;
4607
4608         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4609          * as indicator; formula is (signal dbm - noise dbm).
4610          * SNR at or above 40 is a great signal (100%).
4611          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4612          * Weakest usable signal is usually 10 - 15 dB SNR. */
4613         if (noise_dbm) {
4614                 if (rssi_dbm - noise_dbm >= 40)
4615                         return 100;
4616                 else if (rssi_dbm < noise_dbm)
4617                         return 0;
4618                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4619
4620         /* Else use just the signal level.
4621          * This formula is a least squares fit of data points collected and
4622          *   compared with a reference system that had a percentage (%) display
4623          *   for signal quality. */
4624         } else
4625                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4626                             (15 * RSSI_RANGE + 62 * degradation)) /
4627                            (RSSI_RANGE * RSSI_RANGE);
4628
4629         if (sig_qual > 100)
4630                 sig_qual = 100;
4631         else if (sig_qual < 1)
4632                 sig_qual = 0;
4633
4634         return sig_qual;
4635 }
4636
4637 /**
4638  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4639  *
4640  * Uses the priv->rx_handlers callback function array to invoke
4641  * the appropriate handlers, including command responses,
4642  * frame-received notifications, and other notifications.
4643  */
4644 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4645 {
4646         struct iwl4965_rx_mem_buffer *rxb;
4647         struct iwl4965_rx_packet *pkt;
4648         struct iwl4965_rx_queue *rxq = &priv->rxq;
4649         u32 r, i;
4650         int reclaim;
4651         unsigned long flags;
4652         u8 fill_rx = 0;
4653         u32 count = 8;
4654
4655         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4656          * buffer that the driver may process (last buffer filled by ucode). */
4657         r = iwl4965_hw_get_rx_read(priv);
4658         i = rxq->read;
4659
4660         /* Rx interrupt, but nothing sent from uCode */
4661         if (i == r)
4662                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4663
4664         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4665                 fill_rx = 1;
4666
4667         while (i != r) {
4668                 rxb = rxq->queue[i];
4669
4670                 /* If an RXB doesn't have a Rx queue slot associated with it,
4671                  * then a bug has been introduced in the queue refilling
4672                  * routines -- catch it here */
4673                 BUG_ON(rxb == NULL);
4674
4675                 rxq->queue[i] = NULL;
4676
4677                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4678                                             priv->hw_setting.rx_buf_size,
4679                                             PCI_DMA_FROMDEVICE);
4680                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4681
4682                 /* Reclaim a command buffer only if this packet is a response
4683                  *   to a (driver-originated) command.
4684                  * If the packet (e.g. Rx frame) originated from uCode,
4685                  *   there is no command buffer to reclaim.
4686                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4687                  *   but apparently a few don't get set; catch them here. */
4688                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4689                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4690                         (pkt->hdr.cmd != REPLY_4965_RX) &&
4691                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4692                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4693                         (pkt->hdr.cmd != REPLY_TX);
4694
4695                 /* Based on type of command response or notification,
4696                  *   handle those that need handling via function in
4697                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4698                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4699                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4700                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4701                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4702                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4703                 } else {
4704                         /* No handling needed */
4705                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4706                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4707                                 r, i, get_cmd_string(pkt->hdr.cmd),
4708                                 pkt->hdr.cmd);
4709                 }
4710
4711                 if (reclaim) {
4712                         /* Invoke any callbacks, transfer the skb to caller, and
4713                          * fire off the (possibly) blocking iwl4965_send_cmd()
4714                          * as we reclaim the driver command queue */
4715                         if (rxb && rxb->skb)
4716                                 iwl4965_tx_cmd_complete(priv, rxb);
4717                         else
4718                                 IWL_WARNING("Claim null rxb?\n");
4719                 }
4720
4721                 /* For now we just don't re-use anything.  We can tweak this
4722                  * later to try and re-use notification packets and SKBs that
4723                  * fail to Rx correctly */
4724                 if (rxb->skb != NULL) {
4725                         priv->alloc_rxb_skb--;
4726                         dev_kfree_skb_any(rxb->skb);
4727                         rxb->skb = NULL;
4728                 }
4729
4730                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4731                                  priv->hw_setting.rx_buf_size,
4732                                  PCI_DMA_FROMDEVICE);
4733                 spin_lock_irqsave(&rxq->lock, flags);
4734                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4735                 spin_unlock_irqrestore(&rxq->lock, flags);
4736                 i = (i + 1) & RX_QUEUE_MASK;
4737                 /* If there are a lot of unused frames,
4738                  * restock the Rx queue so ucode wont assert. */
4739                 if (fill_rx) {
4740                         count++;
4741                         if (count >= 8) {
4742                                 priv->rxq.read = i;
4743                                 __iwl4965_rx_replenish(priv);
4744                                 count = 0;
4745                         }
4746                 }
4747         }
4748
4749         /* Backtrack one entry */
4750         priv->rxq.read = i;
4751         iwl4965_rx_queue_restock(priv);
4752 }
4753
4754 /**
4755  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4756  */
4757 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4758                                   struct iwl4965_tx_queue *txq)
4759 {
4760         u32 reg = 0;
4761         int rc = 0;
4762         int txq_id = txq->q.id;
4763
4764         if (txq->need_update == 0)
4765                 return rc;
4766
4767         /* if we're trying to save power */
4768         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4769                 /* wake up nic if it's powered down ...
4770                  * uCode will wake up, and interrupt us again, so next
4771                  * time we'll skip this part. */
4772                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4773
4774                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4775                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4776                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4777                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4778                         return rc;
4779                 }
4780
4781                 /* restore this queue's parameters in nic hardware. */
4782                 rc = iwl4965_grab_nic_access(priv);
4783                 if (rc)
4784                         return rc;
4785                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4786                                      txq->q.write_ptr | (txq_id << 8));
4787                 iwl4965_release_nic_access(priv);
4788
4789         /* else not in power-save mode, uCode will never sleep when we're
4790          * trying to tx (during RFKILL, we're not trying to tx). */
4791         } else
4792                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4793                             txq->q.write_ptr | (txq_id << 8));
4794
4795         txq->need_update = 0;
4796
4797         return rc;
4798 }
4799
4800 #ifdef CONFIG_IWL4965_DEBUG
4801 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4802 {
4803         DECLARE_MAC_BUF(mac);
4804
4805         IWL_DEBUG_RADIO("RX CONFIG:\n");
4806         iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4807         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4808         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4809         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4810                         le32_to_cpu(rxon->filter_flags));
4811         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4812         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4813                         rxon->ofdm_basic_rates);
4814         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4815         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4816                         print_mac(mac, rxon->node_addr));
4817         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4818                         print_mac(mac, rxon->bssid_addr));
4819         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4820 }
4821 #endif
4822
4823 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4824 {
4825         IWL_DEBUG_ISR("Enabling interrupts\n");
4826         set_bit(STATUS_INT_ENABLED, &priv->status);
4827         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4828 }
4829
4830 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4831 {
4832         clear_bit(STATUS_INT_ENABLED, &priv->status);
4833
4834         /* disable interrupts from uCode/NIC to host */
4835         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4836
4837         /* acknowledge/clear/reset any interrupts still pending
4838          * from uCode or flow handler (Rx/Tx DMA) */
4839         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4840         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4841         IWL_DEBUG_ISR("Disabled interrupts\n");
4842 }
4843
4844 static const char *desc_lookup(int i)
4845 {
4846         switch (i) {
4847         case 1:
4848                 return "FAIL";
4849         case 2:
4850                 return "BAD_PARAM";
4851         case 3:
4852                 return "BAD_CHECKSUM";
4853         case 4:
4854                 return "NMI_INTERRUPT";
4855         case 5:
4856                 return "SYSASSERT";
4857         case 6:
4858                 return "FATAL_ERROR";
4859         }
4860
4861         return "UNKNOWN";
4862 }
4863
4864 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4865 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4866
4867 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4868 {
4869         u32 data2, line;
4870         u32 desc, time, count, base, data1;
4871         u32 blink1, blink2, ilink1, ilink2;
4872         int rc;
4873
4874         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4875
4876         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4877                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4878                 return;
4879         }
4880
4881         rc = iwl4965_grab_nic_access(priv);
4882         if (rc) {
4883                 IWL_WARNING("Can not read from adapter at this time.\n");
4884                 return;
4885         }
4886
4887         count = iwl4965_read_targ_mem(priv, base);
4888
4889         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4890                 IWL_ERROR("Start IWL Error Log Dump:\n");
4891                 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4892                           priv->status, priv->config, count);
4893         }
4894
4895         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4896         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4897         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4898         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4899         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4900         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4901         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4902         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4903         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4904
4905         IWL_ERROR("Desc               Time       "
4906                   "data1      data2      line\n");
4907         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4908                   desc_lookup(desc), desc, time, data1, data2, line);
4909         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4910         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4911                   ilink1, ilink2);
4912
4913         iwl4965_release_nic_access(priv);
4914 }
4915
4916 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4917
4918 /**
4919  * iwl4965_print_event_log - Dump error event log to syslog
4920  *
4921  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4922  */
4923 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4924                                 u32 num_events, u32 mode)
4925 {
4926         u32 i;
4927         u32 base;       /* SRAM byte address of event log header */
4928         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4929         u32 ptr;        /* SRAM byte address of log data */
4930         u32 ev, time, data; /* event log data */
4931
4932         if (num_events == 0)
4933                 return;
4934
4935         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4936
4937         if (mode == 0)
4938                 event_size = 2 * sizeof(u32);
4939         else
4940                 event_size = 3 * sizeof(u32);
4941
4942         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4943
4944         /* "time" is actually "data" for mode 0 (no timestamp).
4945          * place event id # at far right for easier visual parsing. */
4946         for (i = 0; i < num_events; i++) {
4947                 ev = iwl4965_read_targ_mem(priv, ptr);
4948                 ptr += sizeof(u32);
4949                 time = iwl4965_read_targ_mem(priv, ptr);
4950                 ptr += sizeof(u32);
4951                 if (mode == 0)
4952                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4953                 else {
4954                         data = iwl4965_read_targ_mem(priv, ptr);
4955                         ptr += sizeof(u32);
4956                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4957                 }
4958         }
4959 }
4960
4961 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4962 {
4963         int rc;
4964         u32 base;       /* SRAM byte address of event log header */
4965         u32 capacity;   /* event log capacity in # entries */
4966         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4967         u32 num_wraps;  /* # times uCode wrapped to top of log */
4968         u32 next_entry; /* index of next entry to be written by uCode */
4969         u32 size;       /* # entries that we'll print */
4970
4971         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4972         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4973                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4974                 return;
4975         }
4976
4977         rc = iwl4965_grab_nic_access(priv);
4978         if (rc) {
4979                 IWL_WARNING("Can not read from adapter at this time.\n");
4980                 return;
4981         }
4982
4983         /* event log header */
4984         capacity = iwl4965_read_targ_mem(priv, base);
4985         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4986         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4987         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4988
4989         size = num_wraps ? capacity : next_entry;
4990
4991         /* bail out if nothing in log */
4992         if (size == 0) {
4993                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4994                 iwl4965_release_nic_access(priv);
4995                 return;
4996         }
4997
4998         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4999                   size, num_wraps);
5000
5001         /* if uCode has wrapped back to top of log, start at the oldest entry,
5002          * i.e the next one that uCode would fill. */
5003         if (num_wraps)
5004                 iwl4965_print_event_log(priv, next_entry,
5005                                     capacity - next_entry, mode);
5006
5007         /* (then/else) start at top of log */
5008         iwl4965_print_event_log(priv, 0, next_entry, mode);
5009
5010         iwl4965_release_nic_access(priv);
5011 }
5012
5013 /**
5014  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
5015  */
5016 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
5017 {
5018         /* Set the FW error flag -- cleared on iwl4965_down */
5019         set_bit(STATUS_FW_ERROR, &priv->status);
5020
5021         /* Cancel currently queued command. */
5022         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
5023
5024 #ifdef CONFIG_IWL4965_DEBUG
5025         if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
5026                 iwl4965_dump_nic_error_log(priv);
5027                 iwl4965_dump_nic_event_log(priv);
5028                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
5029         }
5030 #endif
5031
5032         wake_up_interruptible(&priv->wait_command_queue);
5033
5034         /* Keep the restart process from trying to send host
5035          * commands by clearing the INIT status bit */
5036         clear_bit(STATUS_READY, &priv->status);
5037
5038         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5039                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
5040                           "Restarting adapter due to uCode error.\n");
5041
5042                 if (iwl4965_is_associated(priv)) {
5043                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
5044                                sizeof(priv->recovery_rxon));
5045                         priv->error_recovering = 1;
5046                 }
5047                 queue_work(priv->workqueue, &priv->restart);
5048         }
5049 }
5050
5051 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
5052 {
5053         unsigned long flags;
5054
5055         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
5056                sizeof(priv->staging_rxon));
5057         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5058         iwl4965_commit_rxon(priv);
5059
5060         iwl4965_rxon_add_station(priv, priv->bssid, 1);
5061
5062         spin_lock_irqsave(&priv->lock, flags);
5063         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
5064         priv->error_recovering = 0;
5065         spin_unlock_irqrestore(&priv->lock, flags);
5066 }
5067
5068 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
5069 {
5070         u32 inta, handled = 0;
5071         u32 inta_fh;
5072         unsigned long flags;
5073 #ifdef CONFIG_IWL4965_DEBUG
5074         u32 inta_mask;
5075 #endif
5076
5077         spin_lock_irqsave(&priv->lock, flags);
5078
5079         /* Ack/clear/reset pending uCode interrupts.
5080          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
5081          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
5082         inta = iwl4965_read32(priv, CSR_INT);
5083         iwl4965_write32(priv, CSR_INT, inta);
5084
5085         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
5086          * Any new interrupts that happen after this, either while we're
5087          * in this tasklet, or later, will show up in next ISR/tasklet. */
5088         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5089         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5090
5091 #ifdef CONFIG_IWL4965_DEBUG
5092         if (iwl4965_debug_level & IWL_DL_ISR) {
5093                 /* just for debug */
5094                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5095                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5096                               inta, inta_mask, inta_fh);
5097         }
5098 #endif
5099
5100         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5101          * atomic, make sure that inta covers all the interrupts that
5102          * we've discovered, even if FH interrupt came in just after
5103          * reading CSR_INT. */
5104         if (inta_fh & CSR_FH_INT_RX_MASK)
5105                 inta |= CSR_INT_BIT_FH_RX;
5106         if (inta_fh & CSR_FH_INT_TX_MASK)
5107                 inta |= CSR_INT_BIT_FH_TX;
5108
5109         /* Now service all interrupt bits discovered above. */
5110         if (inta & CSR_INT_BIT_HW_ERR) {
5111                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
5112
5113                 /* Tell the device to stop sending interrupts */
5114                 iwl4965_disable_interrupts(priv);
5115
5116                 iwl4965_irq_handle_error(priv);
5117
5118                 handled |= CSR_INT_BIT_HW_ERR;
5119
5120                 spin_unlock_irqrestore(&priv->lock, flags);
5121
5122                 return;
5123         }
5124
5125 #ifdef CONFIG_IWL4965_DEBUG
5126         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5127                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5128                 if (inta & CSR_INT_BIT_SCD)
5129                         IWL_DEBUG_ISR("Scheduler finished to transmit "
5130                                       "the frame/frames.\n");
5131
5132                 /* Alive notification via Rx interrupt will do the real work */
5133                 if (inta & CSR_INT_BIT_ALIVE)
5134                         IWL_DEBUG_ISR("Alive interrupt\n");
5135         }
5136 #endif
5137         /* Safely ignore these bits for debug checks below */
5138         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
5139
5140         /* HW RF KILL switch toggled */
5141         if (inta & CSR_INT_BIT_RF_KILL) {
5142                 int hw_rf_kill = 0;
5143                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5144                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5145                         hw_rf_kill = 1;
5146
5147                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5148                                 "RF_KILL bit toggled to %s.\n",
5149                                 hw_rf_kill ? "disable radio":"enable radio");
5150
5151                 /* Queue restart only if RF_KILL switch was set to "kill"
5152                  *   when we loaded driver, and is now set to "enable".
5153                  * After we're Alive, RF_KILL gets handled by
5154                  *   iwl_rx_card_state_notif() */
5155                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5156                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
5157                         queue_work(priv->workqueue, &priv->restart);
5158                 }
5159
5160                 handled |= CSR_INT_BIT_RF_KILL;
5161         }
5162
5163         /* Chip got too hot and stopped itself */
5164         if (inta & CSR_INT_BIT_CT_KILL) {
5165                 IWL_ERROR("Microcode CT kill error detected.\n");
5166                 handled |= CSR_INT_BIT_CT_KILL;
5167         }
5168
5169         /* Error detected by uCode */
5170         if (inta & CSR_INT_BIT_SW_ERR) {
5171                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
5172                           inta);
5173                 iwl4965_irq_handle_error(priv);
5174                 handled |= CSR_INT_BIT_SW_ERR;
5175         }
5176
5177         /* uCode wakes up after power-down sleep */
5178         if (inta & CSR_INT_BIT_WAKEUP) {
5179                 IWL_DEBUG_ISR("Wakeup interrupt\n");
5180                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5181                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5182                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5183                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5184                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5185                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5186                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5187
5188                 handled |= CSR_INT_BIT_WAKEUP;
5189         }
5190
5191         /* All uCode command responses, including Tx command responses,
5192          * Rx "responses" (frame-received notification), and other
5193          * notifications from uCode come through here*/
5194         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5195                 iwl4965_rx_handle(priv);
5196                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5197         }
5198
5199         if (inta & CSR_INT_BIT_FH_TX) {
5200                 IWL_DEBUG_ISR("Tx interrupt\n");
5201                 handled |= CSR_INT_BIT_FH_TX;
5202         }
5203
5204         if (inta & ~handled)
5205                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5206
5207         if (inta & ~CSR_INI_SET_MASK) {
5208                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5209                          inta & ~CSR_INI_SET_MASK);
5210                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
5211         }
5212
5213         /* Re-enable all interrupts */
5214         iwl4965_enable_interrupts(priv);
5215
5216 #ifdef CONFIG_IWL4965_DEBUG
5217         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5218                 inta = iwl4965_read32(priv, CSR_INT);
5219                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5220                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5221                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5222                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5223         }
5224 #endif
5225         spin_unlock_irqrestore(&priv->lock, flags);
5226 }
5227
5228 static irqreturn_t iwl4965_isr(int irq, void *data)
5229 {
5230         struct iwl4965_priv *priv = data;
5231         u32 inta, inta_mask;
5232         u32 inta_fh;
5233         if (!priv)
5234                 return IRQ_NONE;
5235
5236         spin_lock(&priv->lock);
5237
5238         /* Disable (but don't clear!) interrupts here to avoid
5239          *    back-to-back ISRs and sporadic interrupts from our NIC.
5240          * If we have something to service, the tasklet will re-enable ints.
5241          * If we *don't* have something, we'll re-enable before leaving here. */
5242         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
5243         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5244
5245         /* Discover which interrupts are active/pending */
5246         inta = iwl4965_read32(priv, CSR_INT);
5247         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5248
5249         /* Ignore interrupt if there's nothing in NIC to service.
5250          * This may be due to IRQ shared with another device,
5251          * or due to sporadic interrupts thrown from our NIC. */
5252         if (!inta && !inta_fh) {
5253                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5254                 goto none;
5255         }
5256
5257         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5258                 /* Hardware disappeared. It might have already raised
5259                  * an interrupt */
5260                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5261                 goto unplugged;
5262         }
5263
5264         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5265                       inta, inta_mask, inta_fh);
5266
5267         inta &= ~CSR_INT_BIT_SCD;
5268
5269         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5270         if (likely(inta || inta_fh))
5271                 tasklet_schedule(&priv->irq_tasklet);
5272
5273  unplugged:
5274         spin_unlock(&priv->lock);
5275         return IRQ_HANDLED;
5276
5277  none:
5278         /* re-enable interrupts here since we don't have anything to service. */
5279         iwl4965_enable_interrupts(priv);
5280         spin_unlock(&priv->lock);
5281         return IRQ_NONE;
5282 }
5283
5284 /************************** EEPROM BANDS ****************************
5285  *
5286  * The iwl4965_eeprom_band definitions below provide the mapping from the
5287  * EEPROM contents to the specific channel number supported for each
5288  * band.
5289  *
5290  * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5291  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5292  * The specific geography and calibration information for that channel
5293  * is contained in the eeprom map itself.
5294  *
5295  * During init, we copy the eeprom information and channel map
5296  * information into priv->channel_info_24/52 and priv->channel_map_24/52
5297  *
5298  * channel_map_24/52 provides the index in the channel_info array for a
5299  * given channel.  We have to have two separate maps as there is channel
5300  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5301  * band_2
5302  *
5303  * A value of 0xff stored in the channel_map indicates that the channel
5304  * is not supported by the hardware at all.
5305  *
5306  * A value of 0xfe in the channel_map indicates that the channel is not
5307  * valid for Tx with the current hardware.  This means that
5308  * while the system can tune and receive on a given channel, it may not
5309  * be able to associate or transmit any frames on that
5310  * channel.  There is no corresponding channel information for that
5311  * entry.
5312  *
5313  *********************************************************************/
5314
5315 /* 2.4 GHz */
5316 static const u8 iwl4965_eeprom_band_1[14] = {
5317         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5318 };
5319
5320 /* 5.2 GHz bands */
5321 static const u8 iwl4965_eeprom_band_2[] = {     /* 4915-5080MHz */
5322         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5323 };
5324
5325 static const u8 iwl4965_eeprom_band_3[] = {     /* 5170-5320MHz */
5326         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5327 };
5328
5329 static const u8 iwl4965_eeprom_band_4[] = {     /* 5500-5700MHz */
5330         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5331 };
5332
5333 static const u8 iwl4965_eeprom_band_5[] = {     /* 5725-5825MHz */
5334         145, 149, 153, 157, 161, 165
5335 };
5336
5337 static u8 iwl4965_eeprom_band_6[] = {       /* 2.4 FAT channel */
5338         1, 2, 3, 4, 5, 6, 7
5339 };
5340
5341 static u8 iwl4965_eeprom_band_7[] = {       /* 5.2 FAT channel */
5342         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5343 };
5344
5345 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5346                                     int band,
5347                                     int *eeprom_ch_count,
5348                                     const struct iwl4965_eeprom_channel
5349                                     **eeprom_ch_info,
5350                                     const u8 **eeprom_ch_index)
5351 {
5352         switch (band) {
5353         case 1:         /* 2.4GHz band */
5354                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5355                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5356                 *eeprom_ch_index = iwl4965_eeprom_band_1;
5357                 break;
5358         case 2:         /* 4.9GHz band */
5359                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5360                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5361                 *eeprom_ch_index = iwl4965_eeprom_band_2;
5362                 break;
5363         case 3:         /* 5.2GHz band */
5364                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5365                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5366                 *eeprom_ch_index = iwl4965_eeprom_band_3;
5367                 break;
5368         case 4:         /* 5.5GHz band */
5369                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5370                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5371                 *eeprom_ch_index = iwl4965_eeprom_band_4;
5372                 break;
5373         case 5:         /* 5.7GHz band */
5374                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5375                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5376                 *eeprom_ch_index = iwl4965_eeprom_band_5;
5377                 break;
5378         case 6:         /* 2.4GHz FAT channels */
5379                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5380                 *eeprom_ch_info = priv->eeprom.band_24_channels;
5381                 *eeprom_ch_index = iwl4965_eeprom_band_6;
5382                 break;
5383         case 7:         /* 5 GHz FAT channels */
5384                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5385                 *eeprom_ch_info = priv->eeprom.band_52_channels;
5386                 *eeprom_ch_index = iwl4965_eeprom_band_7;
5387                 break;
5388         default:
5389                 BUG();
5390                 return;
5391         }
5392 }
5393
5394 /**
5395  * iwl4965_get_channel_info - Find driver's private channel info
5396  *
5397  * Based on band and channel number.
5398  */
5399 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5400                                                     enum ieee80211_band band, u16 channel)
5401 {
5402         int i;
5403
5404         switch (band) {
5405         case IEEE80211_BAND_5GHZ:
5406                 for (i = 14; i < priv->channel_count; i++) {
5407                         if (priv->channel_info[i].channel == channel)
5408                                 return &priv->channel_info[i];
5409                 }
5410                 break;
5411         case IEEE80211_BAND_2GHZ:
5412                 if (channel >= 1 && channel <= 14)
5413                         return &priv->channel_info[channel - 1];
5414                 break;
5415         default:
5416                 BUG();
5417         }
5418
5419         return NULL;
5420 }
5421
5422 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5423                             ? # x " " : "")
5424
5425 /**
5426  * iwl4965_init_channel_map - Set up driver's info for all possible channels
5427  */
5428 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5429 {
5430         int eeprom_ch_count = 0;
5431         const u8 *eeprom_ch_index = NULL;
5432         const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5433         int band, ch;
5434         struct iwl4965_channel_info *ch_info;
5435
5436         if (priv->channel_count) {
5437                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5438                 return 0;
5439         }
5440
5441         if (priv->eeprom.version < 0x2f) {
5442                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5443                             priv->eeprom.version);
5444                 return -EINVAL;
5445         }
5446
5447         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5448
5449         priv->channel_count =
5450             ARRAY_SIZE(iwl4965_eeprom_band_1) +
5451             ARRAY_SIZE(iwl4965_eeprom_band_2) +
5452             ARRAY_SIZE(iwl4965_eeprom_band_3) +
5453             ARRAY_SIZE(iwl4965_eeprom_band_4) +
5454             ARRAY_SIZE(iwl4965_eeprom_band_5);
5455
5456         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5457
5458         priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5459                                      priv->channel_count, GFP_KERNEL);
5460         if (!priv->channel_info) {
5461                 IWL_ERROR("Could not allocate channel_info\n");
5462                 priv->channel_count = 0;
5463                 return -ENOMEM;
5464         }
5465
5466         ch_info = priv->channel_info;
5467
5468         /* Loop through the 5 EEPROM bands adding them in order to the
5469          * channel map we maintain (that contains additional information than
5470          * what just in the EEPROM) */
5471         for (band = 1; band <= 5; band++) {
5472
5473                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5474                                         &eeprom_ch_info, &eeprom_ch_index);
5475
5476                 /* Loop through each band adding each of the channels */
5477                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5478                         ch_info->channel = eeprom_ch_index[ch];
5479                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
5480                             IEEE80211_BAND_5GHZ;
5481
5482                         /* permanently store EEPROM's channel regulatory flags
5483                          *   and max power in channel info database. */
5484                         ch_info->eeprom = eeprom_ch_info[ch];
5485
5486                         /* Copy the run-time flags so they are there even on
5487                          * invalid channels */
5488                         ch_info->flags = eeprom_ch_info[ch].flags;
5489
5490                         if (!(is_channel_valid(ch_info))) {
5491                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5492                                                "No traffic\n",
5493                                                ch_info->channel,
5494                                                ch_info->flags,
5495                                                is_channel_a_band(ch_info) ?
5496                                                "5.2" : "2.4");
5497                                 ch_info++;
5498                                 continue;
5499                         }
5500
5501                         /* Initialize regulatory-based run-time data */
5502                         ch_info->max_power_avg = ch_info->curr_txpow =
5503                             eeprom_ch_info[ch].max_power_avg;
5504                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5505                         ch_info->min_power = 0;
5506
5507                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5508                                        " %ddBm): Ad-Hoc %ssupported\n",
5509                                        ch_info->channel,
5510                                        is_channel_a_band(ch_info) ?
5511                                        "5.2" : "2.4",
5512                                        CHECK_AND_PRINT(IBSS),
5513                                        CHECK_AND_PRINT(ACTIVE),
5514                                        CHECK_AND_PRINT(RADAR),
5515                                        CHECK_AND_PRINT(WIDE),
5516                                        CHECK_AND_PRINT(NARROW),
5517                                        CHECK_AND_PRINT(DFS),
5518                                        eeprom_ch_info[ch].flags,
5519                                        eeprom_ch_info[ch].max_power_avg,
5520                                        ((eeprom_ch_info[ch].
5521                                          flags & EEPROM_CHANNEL_IBSS)
5522                                         && !(eeprom_ch_info[ch].
5523                                              flags & EEPROM_CHANNEL_RADAR))
5524                                        ? "" : "not ");
5525
5526                         /* Set the user_txpower_limit to the highest power
5527                          * supported by any channel */
5528                         if (eeprom_ch_info[ch].max_power_avg >
5529                             priv->user_txpower_limit)
5530                                 priv->user_txpower_limit =
5531                                     eeprom_ch_info[ch].max_power_avg;
5532
5533                         ch_info++;
5534                 }
5535         }
5536
5537         /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5538         for (band = 6; band <= 7; band++) {
5539                 enum ieee80211_band ieeeband;
5540                 u8 fat_extension_chan;
5541
5542                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5543                                         &eeprom_ch_info, &eeprom_ch_index);
5544
5545                 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5546                 ieeeband = (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
5547
5548                 /* Loop through each band adding each of the channels */
5549                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5550
5551                         if ((band == 6) &&
5552                             ((eeprom_ch_index[ch] == 5) ||
5553                             (eeprom_ch_index[ch] == 6) ||
5554                             (eeprom_ch_index[ch] == 7)))
5555                                fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5556                         else
5557                                 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5558
5559                         /* Set up driver's info for lower half */
5560                         iwl4965_set_fat_chan_info(priv, ieeeband,
5561                                                   eeprom_ch_index[ch],
5562                                                   &(eeprom_ch_info[ch]),
5563                                                   fat_extension_chan);
5564
5565                         /* Set up driver's info for upper half */
5566                         iwl4965_set_fat_chan_info(priv, ieeeband,
5567                                                   (eeprom_ch_index[ch] + 4),
5568                                                   &(eeprom_ch_info[ch]),
5569                                                   HT_IE_EXT_CHANNEL_BELOW);
5570                 }
5571         }
5572
5573         return 0;
5574 }
5575
5576 /*
5577  * iwl4965_free_channel_map - undo allocations in iwl4965_init_channel_map
5578  */
5579 static void iwl4965_free_channel_map(struct iwl4965_priv *priv)
5580 {
5581         kfree(priv->channel_info);
5582         priv->channel_count = 0;
5583 }
5584
5585 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5586  * sending probe req.  This should be set long enough to hear probe responses
5587  * from more than one AP.  */
5588 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5589 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5590
5591 /* For faster active scanning, scan will move to the next channel if fewer than
5592  * PLCP_QUIET_THRESH packets are heard on this channel within
5593  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5594  * time if it's a quiet channel (nothing responded to our probe, and there's
5595  * no other traffic).
5596  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5597 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5598 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5599
5600 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5601  * Must be set longer than active dwell time.
5602  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5603 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5604 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5605 #define IWL_PASSIVE_DWELL_BASE      (100)
5606 #define IWL_CHANNEL_TUNE_TIME       5
5607
5608 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv,
5609                                                 enum ieee80211_band band)
5610 {
5611         if (band == IEEE80211_BAND_5GHZ)
5612                 return IWL_ACTIVE_DWELL_TIME_52;
5613         else
5614                 return IWL_ACTIVE_DWELL_TIME_24;
5615 }
5616
5617 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv,
5618                                           enum ieee80211_band band)
5619 {
5620         u16 active = iwl4965_get_active_dwell_time(priv, band);
5621         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
5622             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5623             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5624
5625         if (iwl4965_is_associated(priv)) {
5626                 /* If we're associated, we clamp the maximum passive
5627                  * dwell time to be 98% of the beacon interval (minus
5628                  * 2 * channel tune time) */
5629                 passive = priv->beacon_int;
5630                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5631                         passive = IWL_PASSIVE_DWELL_BASE;
5632                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5633         }
5634
5635         if (passive <= active)
5636                 passive = active + 1;
5637
5638         return passive;
5639 }
5640
5641 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv,
5642                                          enum ieee80211_band band,
5643                                      u8 is_active, u8 direct_mask,
5644                                      struct iwl4965_scan_channel *scan_ch)
5645 {
5646         const struct ieee80211_channel *channels = NULL;
5647         const struct ieee80211_supported_band *sband;
5648         const struct iwl4965_channel_info *ch_info;
5649         u16 passive_dwell = 0;
5650         u16 active_dwell = 0;
5651         int added, i;
5652
5653         sband = iwl4965_get_hw_mode(priv, band);
5654         if (!sband)
5655                 return 0;
5656
5657         channels = sband->channels;
5658
5659         active_dwell = iwl4965_get_active_dwell_time(priv, band);
5660         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
5661
5662         for (i = 0, added = 0; i < sband->n_channels; i++) {
5663                 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
5664                     le16_to_cpu(priv->active_rxon.channel)) {
5665                         if (iwl4965_is_associated(priv)) {
5666                                 IWL_DEBUG_SCAN
5667                                     ("Skipping current channel %d\n",
5668                                      le16_to_cpu(priv->active_rxon.channel));
5669                                 continue;
5670                         }
5671                 } else if (priv->only_active_channel)
5672                         continue;
5673
5674                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
5675
5676                 ch_info = iwl4965_get_channel_info(priv, band,
5677                                          scan_ch->channel);
5678                 if (!is_channel_valid(ch_info)) {
5679                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5680                                        scan_ch->channel);
5681                         continue;
5682                 }
5683
5684                 if (!is_active || is_channel_passive(ch_info) ||
5685                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
5686                         scan_ch->type = 0;      /* passive */
5687                 else
5688                         scan_ch->type = 1;      /* active */
5689
5690                 if (scan_ch->type & 1)
5691                         scan_ch->type |= (direct_mask << 1);
5692
5693                 if (is_channel_narrow(ch_info))
5694                         scan_ch->type |= (1 << 7);
5695
5696                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5697                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5698
5699                 /* Set txpower levels to defaults */
5700                 scan_ch->tpc.dsp_atten = 110;
5701                 /* scan_pwr_info->tpc.dsp_atten; */
5702
5703                 /*scan_pwr_info->tpc.tx_gain; */
5704                 if (band == IEEE80211_BAND_5GHZ)
5705                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5706                 else {
5707                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5708                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5709                          * power level:
5710                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5711                          */
5712                 }
5713
5714                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5715                                scan_ch->channel,
5716                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5717                                (scan_ch->type & 1) ?
5718                                active_dwell : passive_dwell);
5719
5720                 scan_ch++;
5721                 added++;
5722         }
5723
5724         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5725         return added;
5726 }
5727
5728 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5729                               struct ieee80211_rate *rates)
5730 {
5731         int i;
5732
5733         for (i = 0; i < IWL_RATE_COUNT; i++) {
5734                 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
5735                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5736                 rates[i].hw_value_short = i;
5737                 rates[i].flags = 0;
5738                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5739                         /*
5740                          * If CCK != 1M then set short preamble rate flag.
5741                          */
5742                         rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5743                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5744                 }
5745         }
5746 }
5747
5748 /**
5749  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5750  */
5751 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5752 {
5753         struct iwl4965_channel_info *ch;
5754         struct ieee80211_supported_band *band;
5755         struct ieee80211_channel *channels;
5756         struct ieee80211_channel *geo_ch;
5757         struct ieee80211_rate *rates;
5758         int i = 0;
5759
5760         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5761             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5762                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5763                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5764                 return 0;
5765         }
5766
5767         channels = kzalloc(sizeof(struct ieee80211_channel) *
5768                            priv->channel_count, GFP_KERNEL);
5769         if (!channels)
5770                 return -ENOMEM;
5771
5772         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5773                         GFP_KERNEL);
5774         if (!rates) {
5775                 kfree(channels);
5776                 return -ENOMEM;
5777         }
5778
5779         /* 5.2GHz channels start after the 2.4GHz channels */
5780         band = &priv->bands[IEEE80211_BAND_5GHZ];
5781         band->channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5782         band->bitrates = &rates[4];
5783         band->n_bitrates = 8;   /* just OFDM */
5784
5785         iwl4965_init_ht_hw_capab(&band->ht_info, IEEE80211_BAND_5GHZ);
5786
5787         band = &priv->bands[IEEE80211_BAND_2GHZ];
5788         band->channels = channels;
5789         band->bitrates = rates;
5790         band->n_bitrates = 12;  /* OFDM & CCK */
5791
5792         iwl4965_init_ht_hw_capab(&band->ht_info, IEEE80211_BAND_2GHZ);
5793
5794         priv->ieee_channels = channels;
5795         priv->ieee_rates = rates;
5796
5797         iwl4965_init_hw_rates(priv, rates);
5798
5799         for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5800                 ch = &priv->channel_info[i];
5801
5802                 if (!is_channel_valid(ch)) {
5803                         IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5804                                     "skipping.\n",
5805                                     ch->channel, is_channel_a_band(ch) ?
5806                                     "5.2" : "2.4");
5807                         continue;
5808                 }
5809
5810                 if (is_channel_a_band(ch)) {
5811                         geo_ch = &priv->bands[IEEE80211_BAND_5GHZ].channels[priv->bands[IEEE80211_BAND_5GHZ].n_channels++];
5812                 } else
5813                         geo_ch = &priv->bands[IEEE80211_BAND_2GHZ].channels[priv->bands[IEEE80211_BAND_2GHZ].n_channels++];
5814
5815                 geo_ch->center_freq = ieee80211chan2mhz(ch->channel);
5816                 geo_ch->max_power = ch->max_power_avg;
5817                 geo_ch->max_antenna_gain = 0xff;
5818                 geo_ch->hw_value = ch->channel;
5819
5820                 if (is_channel_valid(ch)) {
5821                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5822                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5823
5824                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5825                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5826
5827                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5828                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5829
5830                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5831                                 priv->max_channel_txpower_limit =
5832                                     ch->max_power_avg;
5833                 } else
5834                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5835         }
5836
5837         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && priv->is_abg) {
5838                 printk(KERN_INFO DRV_NAME
5839                        ": Incorrectly detected BG card as ABG.  Please send "
5840                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5841                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5842                 priv->is_abg = 0;
5843         }
5844
5845         printk(KERN_INFO DRV_NAME
5846                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5847                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5848                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5849
5850         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5851         priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5852
5853         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5854
5855         return 0;
5856 }
5857
5858 /*
5859  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5860  */
5861 static void iwl4965_free_geos(struct iwl4965_priv *priv)
5862 {
5863         kfree(priv->ieee_channels);
5864         kfree(priv->ieee_rates);
5865         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5866 }
5867
5868 /******************************************************************************
5869  *
5870  * uCode download functions
5871  *
5872  ******************************************************************************/
5873
5874 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5875 {
5876         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5877         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5878         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5879         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5880         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5881         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5882 }
5883
5884 /**
5885  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5886  *     looking at all data.
5887  */
5888 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 *image,
5889                                  u32 len)
5890 {
5891         u32 val;
5892         u32 save_len = len;
5893         int rc = 0;
5894         u32 errcnt;
5895
5896         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5897
5898         rc = iwl4965_grab_nic_access(priv);
5899         if (rc)
5900                 return rc;
5901
5902         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5903
5904         errcnt = 0;
5905         for (; len > 0; len -= sizeof(u32), image++) {
5906                 /* read data comes through single port, auto-incr addr */
5907                 /* NOTE: Use the debugless read so we don't flood kernel log
5908                  * if IWL_DL_IO is set */
5909                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5910                 if (val != le32_to_cpu(*image)) {
5911                         IWL_ERROR("uCode INST section is invalid at "
5912                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5913                                   save_len - len, val, le32_to_cpu(*image));
5914                         rc = -EIO;
5915                         errcnt++;
5916                         if (errcnt >= 20)
5917                                 break;
5918                 }
5919         }
5920
5921         iwl4965_release_nic_access(priv);
5922
5923         if (!errcnt)
5924                 IWL_DEBUG_INFO
5925                     ("ucode image in INSTRUCTION memory is good\n");
5926
5927         return rc;
5928 }
5929
5930
5931 /**
5932  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5933  *   using sample data 100 bytes apart.  If these sample points are good,
5934  *   it's a pretty good bet that everything between them is good, too.
5935  */
5936 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
5937 {
5938         u32 val;
5939         int rc = 0;
5940         u32 errcnt = 0;
5941         u32 i;
5942
5943         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5944
5945         rc = iwl4965_grab_nic_access(priv);
5946         if (rc)
5947                 return rc;
5948
5949         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5950                 /* read data comes through single port, auto-incr addr */
5951                 /* NOTE: Use the debugless read so we don't flood kernel log
5952                  * if IWL_DL_IO is set */
5953                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5954                         i + RTC_INST_LOWER_BOUND);
5955                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5956                 if (val != le32_to_cpu(*image)) {
5957 #if 0 /* Enable this if you want to see details */
5958                         IWL_ERROR("uCode INST section is invalid at "
5959                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5960                                   i, val, *image);
5961 #endif
5962                         rc = -EIO;
5963                         errcnt++;
5964                         if (errcnt >= 3)
5965                                 break;
5966                 }
5967         }
5968
5969         iwl4965_release_nic_access(priv);
5970
5971         return rc;
5972 }
5973
5974
5975 /**
5976  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5977  *    and verify its contents
5978  */
5979 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
5980 {
5981         __le32 *image;
5982         u32 len;
5983         int rc = 0;
5984
5985         /* Try bootstrap */
5986         image = (__le32 *)priv->ucode_boot.v_addr;
5987         len = priv->ucode_boot.len;
5988         rc = iwl4965_verify_inst_sparse(priv, image, len);
5989         if (rc == 0) {
5990                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5991                 return 0;
5992         }
5993
5994         /* Try initialize */
5995         image = (__le32 *)priv->ucode_init.v_addr;
5996         len = priv->ucode_init.len;
5997         rc = iwl4965_verify_inst_sparse(priv, image, len);
5998         if (rc == 0) {
5999                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
6000                 return 0;
6001         }
6002
6003         /* Try runtime/protocol */
6004         image = (__le32 *)priv->ucode_code.v_addr;
6005         len = priv->ucode_code.len;
6006         rc = iwl4965_verify_inst_sparse(priv, image, len);
6007         if (rc == 0) {
6008                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
6009                 return 0;
6010         }
6011
6012         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
6013
6014         /* Since nothing seems to match, show first several data entries in
6015          * instruction SRAM, so maybe visual inspection will give a clue.
6016          * Selection of bootstrap image (vs. other images) is arbitrary. */
6017         image = (__le32 *)priv->ucode_boot.v_addr;
6018         len = priv->ucode_boot.len;
6019         rc = iwl4965_verify_inst_full(priv, image, len);
6020
6021         return rc;
6022 }
6023
6024
6025 /* check contents of special bootstrap uCode SRAM */
6026 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
6027 {
6028         __le32 *image = priv->ucode_boot.v_addr;
6029         u32 len = priv->ucode_boot.len;
6030         u32 reg;
6031         u32 val;
6032
6033         IWL_DEBUG_INFO("Begin verify bsm\n");
6034
6035         /* verify BSM SRAM contents */
6036         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6037         for (reg = BSM_SRAM_LOWER_BOUND;
6038              reg < BSM_SRAM_LOWER_BOUND + len;
6039              reg += sizeof(u32), image ++) {
6040                 val = iwl4965_read_prph(priv, reg);
6041                 if (val != le32_to_cpu(*image)) {
6042                         IWL_ERROR("BSM uCode verification failed at "
6043                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6044                                   BSM_SRAM_LOWER_BOUND,
6045                                   reg - BSM_SRAM_LOWER_BOUND, len,
6046                                   val, le32_to_cpu(*image));
6047                         return -EIO;
6048                 }
6049         }
6050
6051         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6052
6053         return 0;
6054 }
6055
6056 /**
6057  * iwl4965_load_bsm - Load bootstrap instructions
6058  *
6059  * BSM operation:
6060  *
6061  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6062  * in special SRAM that does not power down during RFKILL.  When powering back
6063  * up after power-saving sleeps (or during initial uCode load), the BSM loads
6064  * the bootstrap program into the on-board processor, and starts it.
6065  *
6066  * The bootstrap program loads (via DMA) instructions and data for a new
6067  * program from host DRAM locations indicated by the host driver in the
6068  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
6069  * automatically.
6070  *
6071  * When initializing the NIC, the host driver points the BSM to the
6072  * "initialize" uCode image.  This uCode sets up some internal data, then
6073  * notifies host via "initialize alive" that it is complete.
6074  *
6075  * The host then replaces the BSM_DRAM_* pointer values to point to the
6076  * normal runtime uCode instructions and a backup uCode data cache buffer
6077  * (filled initially with starting data values for the on-board processor),
6078  * then triggers the "initialize" uCode to load and launch the runtime uCode,
6079  * which begins normal operation.
6080  *
6081  * When doing a power-save shutdown, runtime uCode saves data SRAM into
6082  * the backup data cache in DRAM before SRAM is powered down.
6083  *
6084  * When powering back up, the BSM loads the bootstrap program.  This reloads
6085  * the runtime uCode instructions and the backup data cache into SRAM,
6086  * and re-launches the runtime uCode from where it left off.
6087  */
6088 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6089 {
6090         __le32 *image = priv->ucode_boot.v_addr;
6091         u32 len = priv->ucode_boot.len;
6092         dma_addr_t pinst;
6093         dma_addr_t pdata;
6094         u32 inst_len;
6095         u32 data_len;
6096         int rc;
6097         int i;
6098         u32 done;
6099         u32 reg_offset;
6100
6101         IWL_DEBUG_INFO("Begin load bsm\n");
6102
6103         /* make sure bootstrap program is no larger than BSM's SRAM size */
6104         if (len > IWL_MAX_BSM_SIZE)
6105                 return -EINVAL;
6106
6107         /* Tell bootstrap uCode where to find the "Initialize" uCode
6108          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
6109          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
6110          *        after the "initialize" uCode has run, to point to
6111          *        runtime/protocol instructions and backup data cache. */
6112         pinst = priv->ucode_init.p_addr >> 4;
6113         pdata = priv->ucode_init_data.p_addr >> 4;
6114         inst_len = priv->ucode_init.len;
6115         data_len = priv->ucode_init_data.len;
6116
6117         rc = iwl4965_grab_nic_access(priv);
6118         if (rc)
6119                 return rc;
6120
6121         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6122         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6123         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6124         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6125
6126         /* Fill BSM memory with bootstrap instructions */
6127         for (reg_offset = BSM_SRAM_LOWER_BOUND;
6128              reg_offset < BSM_SRAM_LOWER_BOUND + len;
6129              reg_offset += sizeof(u32), image++)
6130                 _iwl4965_write_prph(priv, reg_offset,
6131                                           le32_to_cpu(*image));
6132
6133         rc = iwl4965_verify_bsm(priv);
6134         if (rc) {
6135                 iwl4965_release_nic_access(priv);
6136                 return rc;
6137         }
6138
6139         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6140         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6141         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6142                                  RTC_INST_LOWER_BOUND);
6143         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6144
6145         /* Load bootstrap code into instruction SRAM now,
6146          *   to prepare to load "initialize" uCode */
6147         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6148                 BSM_WR_CTRL_REG_BIT_START);
6149
6150         /* Wait for load of bootstrap uCode to finish */
6151         for (i = 0; i < 100; i++) {
6152                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6153                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6154                         break;
6155                 udelay(10);
6156         }
6157         if (i < 100)
6158                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6159         else {
6160                 IWL_ERROR("BSM write did not complete!\n");
6161                 return -EIO;
6162         }
6163
6164         /* Enable future boot loads whenever power management unit triggers it
6165          *   (e.g. when powering back up after power-save shutdown) */
6166         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6167                 BSM_WR_CTRL_REG_BIT_START_EN);
6168
6169         iwl4965_release_nic_access(priv);
6170
6171         return 0;
6172 }
6173
6174 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6175 {
6176         /* Remove all resets to allow NIC to operate */
6177         iwl4965_write32(priv, CSR_RESET, 0);
6178 }
6179
6180
6181 /**
6182  * iwl4965_read_ucode - Read uCode images from disk file.
6183  *
6184  * Copy into buffers for card to fetch via bus-mastering
6185  */
6186 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6187 {
6188         struct iwl4965_ucode *ucode;
6189         int ret;
6190         const struct firmware *ucode_raw;
6191         const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6192         u8 *src;
6193         size_t len;
6194         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6195
6196         /* Ask kernel firmware_class module to get the boot firmware off disk.
6197          * request_firmware() is synchronous, file is in memory on return. */
6198         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6199         if (ret < 0) {
6200                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6201                                         name, ret);
6202                 goto error;
6203         }
6204
6205         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6206                        name, ucode_raw->size);
6207
6208         /* Make sure that we got at least our header! */
6209         if (ucode_raw->size < sizeof(*ucode)) {
6210                 IWL_ERROR("File size way too small!\n");
6211                 ret = -EINVAL;
6212                 goto err_release;
6213         }
6214
6215         /* Data from ucode file:  header followed by uCode images */
6216         ucode = (void *)ucode_raw->data;
6217
6218         ver = le32_to_cpu(ucode->ver);
6219         inst_size = le32_to_cpu(ucode->inst_size);
6220         data_size = le32_to_cpu(ucode->data_size);
6221         init_size = le32_to_cpu(ucode->init_size);
6222         init_data_size = le32_to_cpu(ucode->init_data_size);
6223         boot_size = le32_to_cpu(ucode->boot_size);
6224
6225         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6226         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6227                        inst_size);
6228         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6229                        data_size);
6230         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6231                        init_size);
6232         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6233                        init_data_size);
6234         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6235                        boot_size);
6236
6237         /* Verify size of file vs. image size info in file's header */
6238         if (ucode_raw->size < sizeof(*ucode) +
6239                 inst_size + data_size + init_size +
6240                 init_data_size + boot_size) {
6241
6242                 IWL_DEBUG_INFO("uCode file size %d too small\n",
6243                                (int)ucode_raw->size);
6244                 ret = -EINVAL;
6245                 goto err_release;
6246         }
6247
6248         /* Verify that uCode images will fit in card's SRAM */
6249         if (inst_size > IWL_MAX_INST_SIZE) {
6250                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6251                                inst_size);
6252                 ret = -EINVAL;
6253                 goto err_release;
6254         }
6255
6256         if (data_size > IWL_MAX_DATA_SIZE) {
6257                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6258                                 data_size);
6259                 ret = -EINVAL;
6260                 goto err_release;
6261         }
6262         if (init_size > IWL_MAX_INST_SIZE) {
6263                 IWL_DEBUG_INFO
6264                     ("uCode init instr len %d too large to fit in\n",
6265                       init_size);
6266                 ret = -EINVAL;
6267                 goto err_release;
6268         }
6269         if (init_data_size > IWL_MAX_DATA_SIZE) {
6270                 IWL_DEBUG_INFO
6271                     ("uCode init data len %d too large to fit in\n",
6272                       init_data_size);
6273                 ret = -EINVAL;
6274                 goto err_release;
6275         }
6276         if (boot_size > IWL_MAX_BSM_SIZE) {
6277                 IWL_DEBUG_INFO
6278                     ("uCode boot instr len %d too large to fit in\n",
6279                       boot_size);
6280                 ret = -EINVAL;
6281                 goto err_release;
6282         }
6283
6284         /* Allocate ucode buffers for card's bus-master loading ... */
6285
6286         /* Runtime instructions and 2 copies of data:
6287          * 1) unmodified from disk
6288          * 2) backup cache for save/restore during power-downs */
6289         priv->ucode_code.len = inst_size;
6290         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6291
6292         priv->ucode_data.len = data_size;
6293         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6294
6295         priv->ucode_data_backup.len = data_size;
6296         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6297
6298         /* Initialization instructions and data */
6299         if (init_size && init_data_size) {
6300                 priv->ucode_init.len = init_size;
6301                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6302
6303                 priv->ucode_init_data.len = init_data_size;
6304                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6305
6306                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6307                         goto err_pci_alloc;
6308         }
6309
6310         /* Bootstrap (instructions only, no data) */
6311         if (boot_size) {
6312                 priv->ucode_boot.len = boot_size;
6313                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6314
6315                 if (!priv->ucode_boot.v_addr)
6316                         goto err_pci_alloc;
6317         }
6318
6319         /* Copy images into buffers for card's bus-master reads ... */
6320
6321         /* Runtime instructions (first block of data in file) */
6322         src = &ucode->data[0];
6323         len = priv->ucode_code.len;
6324         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6325         memcpy(priv->ucode_code.v_addr, src, len);
6326         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6327                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6328
6329         /* Runtime data (2nd block)
6330          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
6331         src = &ucode->data[inst_size];
6332         len = priv->ucode_data.len;
6333         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6334         memcpy(priv->ucode_data.v_addr, src, len);
6335         memcpy(priv->ucode_data_backup.v_addr, src, len);
6336
6337         /* Initialization instructions (3rd block) */
6338         if (init_size) {
6339                 src = &ucode->data[inst_size + data_size];
6340                 len = priv->ucode_init.len;
6341                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6342                                 len);
6343                 memcpy(priv->ucode_init.v_addr, src, len);
6344         }
6345
6346         /* Initialization data (4th block) */
6347         if (init_data_size) {
6348                 src = &ucode->data[inst_size + data_size + init_size];
6349                 len = priv->ucode_init_data.len;
6350                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6351                                len);
6352                 memcpy(priv->ucode_init_data.v_addr, src, len);
6353         }
6354
6355         /* Bootstrap instructions (5th block) */
6356         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6357         len = priv->ucode_boot.len;
6358         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6359         memcpy(priv->ucode_boot.v_addr, src, len);
6360
6361         /* We have our copies now, allow OS release its copies */
6362         release_firmware(ucode_raw);
6363         return 0;
6364
6365  err_pci_alloc:
6366         IWL_ERROR("failed to allocate pci memory\n");
6367         ret = -ENOMEM;
6368         iwl4965_dealloc_ucode_pci(priv);
6369
6370  err_release:
6371         release_firmware(ucode_raw);
6372
6373  error:
6374         return ret;
6375 }
6376
6377
6378 /**
6379  * iwl4965_set_ucode_ptrs - Set uCode address location
6380  *
6381  * Tell initialization uCode where to find runtime uCode.
6382  *
6383  * BSM registers initially contain pointers to initialization uCode.
6384  * We need to replace them to load runtime uCode inst and data,
6385  * and to save runtime data when powering down.
6386  */
6387 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6388 {
6389         dma_addr_t pinst;
6390         dma_addr_t pdata;
6391         int rc = 0;
6392         unsigned long flags;
6393
6394         /* bits 35:4 for 4965 */
6395         pinst = priv->ucode_code.p_addr >> 4;
6396         pdata = priv->ucode_data_backup.p_addr >> 4;
6397
6398         spin_lock_irqsave(&priv->lock, flags);
6399         rc = iwl4965_grab_nic_access(priv);
6400         if (rc) {
6401                 spin_unlock_irqrestore(&priv->lock, flags);
6402                 return rc;
6403         }
6404
6405         /* Tell bootstrap uCode where to find image to load */
6406         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6407         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6408         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6409                                  priv->ucode_data.len);
6410
6411         /* Inst bytecount must be last to set up, bit 31 signals uCode
6412          *   that all new ptr/size info is in place */
6413         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6414                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6415
6416         iwl4965_release_nic_access(priv);
6417
6418         spin_unlock_irqrestore(&priv->lock, flags);
6419
6420         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6421
6422         return rc;
6423 }
6424
6425 /**
6426  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6427  *
6428  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6429  *
6430  * The 4965 "initialize" ALIVE reply contains calibration data for:
6431  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
6432  *   (3945 does not contain this data).
6433  *
6434  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6435 */
6436 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6437 {
6438         /* Check alive response for "valid" sign from uCode */
6439         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6440                 /* We had an error bringing up the hardware, so take it
6441                  * all the way back down so we can try again */
6442                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6443                 goto restart;
6444         }
6445
6446         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6447          * This is a paranoid check, because we would not have gotten the
6448          * "initialize" alive if code weren't properly loaded.  */
6449         if (iwl4965_verify_ucode(priv)) {
6450                 /* Runtime instruction load was bad;
6451                  * take it all the way back down so we can try again */
6452                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6453                 goto restart;
6454         }
6455
6456         /* Calculate temperature */
6457         priv->temperature = iwl4965_get_temperature(priv);
6458
6459         /* Send pointers to protocol/runtime uCode image ... init code will
6460          * load and launch runtime uCode, which will send us another "Alive"
6461          * notification. */
6462         IWL_DEBUG_INFO("Initialization Alive received.\n");
6463         if (iwl4965_set_ucode_ptrs(priv)) {
6464                 /* Runtime instruction load won't happen;
6465                  * take it all the way back down so we can try again */
6466                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6467                 goto restart;
6468         }
6469         return;
6470
6471  restart:
6472         queue_work(priv->workqueue, &priv->restart);
6473 }
6474
6475
6476 /**
6477  * iwl4965_alive_start - called after REPLY_ALIVE notification received
6478  *                   from protocol/runtime uCode (initialization uCode's
6479  *                   Alive gets handled by iwl4965_init_alive_start()).
6480  */
6481 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6482 {
6483         int rc = 0;
6484
6485         IWL_DEBUG_INFO("Runtime Alive received.\n");
6486
6487         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6488                 /* We had an error bringing up the hardware, so take it
6489                  * all the way back down so we can try again */
6490                 IWL_DEBUG_INFO("Alive failed.\n");
6491                 goto restart;
6492         }
6493
6494         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6495          * This is a paranoid check, because we would not have gotten the
6496          * "runtime" alive if code weren't properly loaded.  */
6497         if (iwl4965_verify_ucode(priv)) {
6498                 /* Runtime instruction load was bad;
6499                  * take it all the way back down so we can try again */
6500                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6501                 goto restart;
6502         }
6503
6504         iwl4965_clear_stations_table(priv);
6505
6506         rc = iwl4965_alive_notify(priv);
6507         if (rc) {
6508                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6509                             rc);
6510                 goto restart;
6511         }
6512
6513         /* After the ALIVE response, we can send host commands to 4965 uCode */
6514         set_bit(STATUS_ALIVE, &priv->status);
6515
6516         /* Clear out the uCode error bit if it is set */
6517         clear_bit(STATUS_FW_ERROR, &priv->status);
6518
6519         if (iwl4965_is_rfkill(priv))
6520                 return;
6521
6522         ieee80211_start_queues(priv->hw);
6523
6524         priv->active_rate = priv->rates_mask;
6525         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6526
6527         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6528
6529         if (iwl4965_is_associated(priv)) {
6530                 struct iwl4965_rxon_cmd *active_rxon =
6531                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6532
6533                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6534                        sizeof(priv->staging_rxon));
6535                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6536         } else {
6537                 /* Initialize our rx_config data */
6538                 iwl4965_connection_init_rx_config(priv);
6539                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6540         }
6541
6542         /* Configure Bluetooth device coexistence support */
6543         iwl4965_send_bt_config(priv);
6544
6545         /* Configure the adapter for unassociated operation */
6546         iwl4965_commit_rxon(priv);
6547
6548         /* At this point, the NIC is initialized and operational */
6549         priv->notif_missed_beacons = 0;
6550         set_bit(STATUS_READY, &priv->status);
6551
6552         iwl4965_rf_kill_ct_config(priv);
6553
6554         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6555         wake_up_interruptible(&priv->wait_command_queue);
6556
6557         if (priv->error_recovering)
6558                 iwl4965_error_recovery(priv);
6559
6560         return;
6561
6562  restart:
6563         queue_work(priv->workqueue, &priv->restart);
6564 }
6565
6566 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6567
6568 static void __iwl4965_down(struct iwl4965_priv *priv)
6569 {
6570         unsigned long flags;
6571         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6572         struct ieee80211_conf *conf = NULL;
6573
6574         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6575
6576         conf = ieee80211_get_hw_conf(priv->hw);
6577
6578         if (!exit_pending)
6579                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6580
6581         iwl4965_clear_stations_table(priv);
6582
6583         /* Unblock any waiting calls */
6584         wake_up_interruptible_all(&priv->wait_command_queue);
6585
6586         /* Wipe out the EXIT_PENDING status bit if we are not actually
6587          * exiting the module */
6588         if (!exit_pending)
6589                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6590
6591         /* stop and reset the on-board processor */
6592         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6593
6594         /* tell the device to stop sending interrupts */
6595         iwl4965_disable_interrupts(priv);
6596
6597         if (priv->mac80211_registered)
6598                 ieee80211_stop_queues(priv->hw);
6599
6600         /* If we have not previously called iwl4965_init() then
6601          * clear all bits but the RF Kill and SUSPEND bits and return */
6602         if (!iwl4965_is_init(priv)) {
6603                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6604                                         STATUS_RF_KILL_HW |
6605                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6606                                         STATUS_RF_KILL_SW |
6607                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6608                                         STATUS_GEO_CONFIGURED |
6609                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6610                                         STATUS_IN_SUSPEND;
6611                 goto exit;
6612         }
6613
6614         /* ...otherwise clear out all the status bits but the RF Kill and
6615          * SUSPEND bits and continue taking the NIC down. */
6616         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6617                                 STATUS_RF_KILL_HW |
6618                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6619                                 STATUS_RF_KILL_SW |
6620                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6621                                 STATUS_GEO_CONFIGURED |
6622                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6623                                 STATUS_IN_SUSPEND |
6624                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6625                                 STATUS_FW_ERROR;
6626
6627         spin_lock_irqsave(&priv->lock, flags);
6628         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6629                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6630         spin_unlock_irqrestore(&priv->lock, flags);
6631
6632         iwl4965_hw_txq_ctx_stop(priv);
6633         iwl4965_hw_rxq_stop(priv);
6634
6635         spin_lock_irqsave(&priv->lock, flags);
6636         if (!iwl4965_grab_nic_access(priv)) {
6637                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6638                                          APMG_CLK_VAL_DMA_CLK_RQT);
6639                 iwl4965_release_nic_access(priv);
6640         }
6641         spin_unlock_irqrestore(&priv->lock, flags);
6642
6643         udelay(5);
6644
6645         iwl4965_hw_nic_stop_master(priv);
6646         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6647         iwl4965_hw_nic_reset(priv);
6648
6649  exit:
6650         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6651
6652         if (priv->ibss_beacon)
6653                 dev_kfree_skb(priv->ibss_beacon);
6654         priv->ibss_beacon = NULL;
6655
6656         /* clear out any free frames */
6657         iwl4965_clear_free_frames(priv);
6658 }
6659
6660 static void iwl4965_down(struct iwl4965_priv *priv)
6661 {
6662         mutex_lock(&priv->mutex);
6663         __iwl4965_down(priv);
6664         mutex_unlock(&priv->mutex);
6665
6666         iwl4965_cancel_deferred_work(priv);
6667 }
6668
6669 #define MAX_HW_RESTARTS 5
6670
6671 static int __iwl4965_up(struct iwl4965_priv *priv)
6672 {
6673         int rc, i;
6674
6675         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6676                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6677                 return -EIO;
6678         }
6679
6680         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6681                 IWL_WARNING("Radio disabled by SW RF kill (module "
6682                             "parameter)\n");
6683                 return -ENODEV;
6684         }
6685
6686         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6687                 IWL_ERROR("ucode not available for device bringup\n");
6688                 return -EIO;
6689         }
6690
6691         /* If platform's RF_KILL switch is NOT set to KILL */
6692         if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6693                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6694                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6695         else {
6696                 set_bit(STATUS_RF_KILL_HW, &priv->status);
6697                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6698                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6699                         return -ENODEV;
6700                 }
6701         }
6702
6703         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6704
6705         rc = iwl4965_hw_nic_init(priv);
6706         if (rc) {
6707                 IWL_ERROR("Unable to int nic\n");
6708                 return rc;
6709         }
6710
6711         /* make sure rfkill handshake bits are cleared */
6712         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6713         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6714                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6715
6716         /* clear (again), then enable host interrupts */
6717         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6718         iwl4965_enable_interrupts(priv);
6719
6720         /* really make sure rfkill handshake bits are cleared */
6721         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6722         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6723
6724         /* Copy original ucode data image from disk into backup cache.
6725          * This will be used to initialize the on-board processor's
6726          * data SRAM for a clean start when the runtime program first loads. */
6727         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6728                priv->ucode_data.len);
6729
6730         /* We return success when we resume from suspend and rf_kill is on. */
6731         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6732                 return 0;
6733
6734         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6735
6736                 iwl4965_clear_stations_table(priv);
6737
6738                 /* load bootstrap state machine,
6739                  * load bootstrap program into processor's memory,
6740                  * prepare to load the "initialize" uCode */
6741                 rc = iwl4965_load_bsm(priv);
6742
6743                 if (rc) {
6744                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6745                         continue;
6746                 }
6747
6748                 /* start card; "initialize" will load runtime ucode */
6749                 iwl4965_nic_start(priv);
6750
6751                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6752
6753                 return 0;
6754         }
6755
6756         set_bit(STATUS_EXIT_PENDING, &priv->status);
6757         __iwl4965_down(priv);
6758
6759         /* tried to restart and config the device for as long as our
6760          * patience could withstand */
6761         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6762         return -EIO;
6763 }
6764
6765
6766 /*****************************************************************************
6767  *
6768  * Workqueue callbacks
6769  *
6770  *****************************************************************************/
6771
6772 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6773 {
6774         struct iwl4965_priv *priv =
6775             container_of(data, struct iwl4965_priv, init_alive_start.work);
6776
6777         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6778                 return;
6779
6780         mutex_lock(&priv->mutex);
6781         iwl4965_init_alive_start(priv);
6782         mutex_unlock(&priv->mutex);
6783 }
6784
6785 static void iwl4965_bg_alive_start(struct work_struct *data)
6786 {
6787         struct iwl4965_priv *priv =
6788             container_of(data, struct iwl4965_priv, alive_start.work);
6789
6790         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6791                 return;
6792
6793         mutex_lock(&priv->mutex);
6794         iwl4965_alive_start(priv);
6795         mutex_unlock(&priv->mutex);
6796 }
6797
6798 static void iwl4965_bg_rf_kill(struct work_struct *work)
6799 {
6800         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6801
6802         wake_up_interruptible(&priv->wait_command_queue);
6803
6804         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6805                 return;
6806
6807         mutex_lock(&priv->mutex);
6808
6809         if (!iwl4965_is_rfkill(priv)) {
6810                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6811                           "HW and/or SW RF Kill no longer active, restarting "
6812                           "device\n");
6813                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6814                         queue_work(priv->workqueue, &priv->restart);
6815         } else {
6816
6817                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6818                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6819                                           "disabled by SW switch\n");
6820                 else
6821                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6822                                     "Kill switch must be turned off for "
6823                                     "wireless networking to work.\n");
6824         }
6825         mutex_unlock(&priv->mutex);
6826 }
6827
6828 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6829
6830 static void iwl4965_bg_scan_check(struct work_struct *data)
6831 {
6832         struct iwl4965_priv *priv =
6833             container_of(data, struct iwl4965_priv, scan_check.work);
6834
6835         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6836                 return;
6837
6838         mutex_lock(&priv->mutex);
6839         if (test_bit(STATUS_SCANNING, &priv->status) ||
6840             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6841                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6842                           "Scan completion watchdog resetting adapter (%dms)\n",
6843                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6844
6845                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6846                         iwl4965_send_scan_abort(priv);
6847         }
6848         mutex_unlock(&priv->mutex);
6849 }
6850
6851 static void iwl4965_bg_request_scan(struct work_struct *data)
6852 {
6853         struct iwl4965_priv *priv =
6854             container_of(data, struct iwl4965_priv, request_scan);
6855         struct iwl4965_host_cmd cmd = {
6856                 .id = REPLY_SCAN_CMD,
6857                 .len = sizeof(struct iwl4965_scan_cmd),
6858                 .meta.flags = CMD_SIZE_HUGE,
6859         };
6860         int rc = 0;
6861         struct iwl4965_scan_cmd *scan;
6862         struct ieee80211_conf *conf = NULL;
6863         u16 cmd_len;
6864         enum ieee80211_band band;
6865         u8 direct_mask;
6866
6867         conf = ieee80211_get_hw_conf(priv->hw);
6868
6869         mutex_lock(&priv->mutex);
6870
6871         if (!iwl4965_is_ready(priv)) {
6872                 IWL_WARNING("request scan called when driver not ready.\n");
6873                 goto done;
6874         }
6875
6876         /* Make sure the scan wasn't cancelled before this queued work
6877          * was given the chance to run... */
6878         if (!test_bit(STATUS_SCANNING, &priv->status))
6879                 goto done;
6880
6881         /* This should never be called or scheduled if there is currently
6882          * a scan active in the hardware. */
6883         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6884                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6885                                "Ignoring second request.\n");
6886                 rc = -EIO;
6887                 goto done;
6888         }
6889
6890         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6891                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6892                 goto done;
6893         }
6894
6895         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6896                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6897                 goto done;
6898         }
6899
6900         if (iwl4965_is_rfkill(priv)) {
6901                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6902                 goto done;
6903         }
6904
6905         if (!test_bit(STATUS_READY, &priv->status)) {
6906                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6907                 goto done;
6908         }
6909
6910         if (!priv->scan_bands) {
6911                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6912                 goto done;
6913         }
6914
6915         if (!priv->scan) {
6916                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6917                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6918                 if (!priv->scan) {
6919                         rc = -ENOMEM;
6920                         goto done;
6921                 }
6922         }
6923         scan = priv->scan;
6924         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6925
6926         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6927         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6928
6929         if (iwl4965_is_associated(priv)) {
6930                 u16 interval = 0;
6931                 u32 extra;
6932                 u32 suspend_time = 100;
6933                 u32 scan_suspend_time = 100;
6934                 unsigned long flags;
6935
6936                 IWL_DEBUG_INFO("Scanning while associated...\n");
6937
6938                 spin_lock_irqsave(&priv->lock, flags);
6939                 interval = priv->beacon_int;
6940                 spin_unlock_irqrestore(&priv->lock, flags);
6941
6942                 scan->suspend_time = 0;
6943                 scan->max_out_time = cpu_to_le32(200 * 1024);
6944                 if (!interval)
6945                         interval = suspend_time;
6946
6947                 extra = (suspend_time / interval) << 22;
6948                 scan_suspend_time = (extra |
6949                     ((suspend_time % interval) * 1024));
6950                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6951                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6952                                scan_suspend_time, interval);
6953         }
6954
6955         /* We should add the ability for user to lock to PASSIVE ONLY */
6956         if (priv->one_direct_scan) {
6957                 IWL_DEBUG_SCAN
6958                     ("Kicking off one direct scan for '%s'\n",
6959                      iwl4965_escape_essid(priv->direct_ssid,
6960                                       priv->direct_ssid_len));
6961                 scan->direct_scan[0].id = WLAN_EID_SSID;
6962                 scan->direct_scan[0].len = priv->direct_ssid_len;
6963                 memcpy(scan->direct_scan[0].ssid,
6964                        priv->direct_ssid, priv->direct_ssid_len);
6965                 direct_mask = 1;
6966         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6967                 scan->direct_scan[0].id = WLAN_EID_SSID;
6968                 scan->direct_scan[0].len = priv->essid_len;
6969                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6970                 direct_mask = 1;
6971         } else
6972                 direct_mask = 0;
6973
6974         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6975         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6976         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6977
6978
6979         switch (priv->scan_bands) {
6980         case 2:
6981                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6982                 scan->tx_cmd.rate_n_flags =
6983                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6984                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6985
6986                 scan->good_CRC_th = 0;
6987                 band = IEEE80211_BAND_2GHZ;
6988                 break;
6989
6990         case 1:
6991                 scan->tx_cmd.rate_n_flags =
6992                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6993                                 RATE_MCS_ANT_B_MSK);
6994                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6995                 band = IEEE80211_BAND_5GHZ;
6996                 break;
6997
6998         default:
6999                 IWL_WARNING("Invalid scan band count\n");
7000                 goto done;
7001         }
7002
7003         /* We don't build a direct scan probe request; the uCode will do
7004          * that based on the direct_mask added to each channel entry */
7005         cmd_len = iwl4965_fill_probe_req(priv, band,
7006                                         (struct ieee80211_mgmt *)scan->data,
7007                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
7008
7009         scan->tx_cmd.len = cpu_to_le16(cmd_len);
7010         /* select Rx chains */
7011
7012         /* Force use of chains B and C (0x6) for scan Rx.
7013          * Avoid A (0x1) because of its off-channel reception on A-band.
7014          * MIMO is not used here, but value is required to make uCode happy. */
7015         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7016                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7017                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7018                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7019
7020         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7021                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7022
7023         if (direct_mask)
7024                 IWL_DEBUG_SCAN
7025                     ("Initiating direct scan for %s.\n",
7026                      iwl4965_escape_essid(priv->essid, priv->essid_len));
7027         else
7028                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7029
7030         scan->channel_count =
7031                 iwl4965_get_channels_for_scan(
7032                         priv, band, 1, /* active */
7033                         direct_mask,
7034                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7035
7036         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7037             scan->channel_count * sizeof(struct iwl4965_scan_channel);
7038         cmd.data = scan;
7039         scan->len = cpu_to_le16(cmd.len);
7040
7041         set_bit(STATUS_SCAN_HW, &priv->status);
7042         rc = iwl4965_send_cmd_sync(priv, &cmd);
7043         if (rc)
7044                 goto done;
7045
7046         queue_delayed_work(priv->workqueue, &priv->scan_check,
7047                            IWL_SCAN_CHECK_WATCHDOG);
7048
7049         mutex_unlock(&priv->mutex);
7050         return;
7051
7052  done:
7053         /* inform mac80211 scan aborted */
7054         queue_work(priv->workqueue, &priv->scan_completed);
7055         mutex_unlock(&priv->mutex);
7056 }
7057
7058 static void iwl4965_bg_up(struct work_struct *data)
7059 {
7060         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7061
7062         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7063                 return;
7064
7065         mutex_lock(&priv->mutex);
7066         __iwl4965_up(priv);
7067         mutex_unlock(&priv->mutex);
7068 }
7069
7070 static void iwl4965_bg_restart(struct work_struct *data)
7071 {
7072         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7073
7074         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7075                 return;
7076
7077         iwl4965_down(priv);
7078         queue_work(priv->workqueue, &priv->up);
7079 }
7080
7081 static void iwl4965_bg_rx_replenish(struct work_struct *data)
7082 {
7083         struct iwl4965_priv *priv =
7084             container_of(data, struct iwl4965_priv, rx_replenish);
7085
7086         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7087                 return;
7088
7089         mutex_lock(&priv->mutex);
7090         iwl4965_rx_replenish(priv);
7091         mutex_unlock(&priv->mutex);
7092 }
7093
7094 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7095
7096 static void iwl4965_bg_post_associate(struct work_struct *data)
7097 {
7098         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7099                                              post_associate.work);
7100
7101         int rc = 0;
7102         struct ieee80211_conf *conf = NULL;
7103         DECLARE_MAC_BUF(mac);
7104
7105         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7106                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7107                 return;
7108         }
7109
7110         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7111                         priv->assoc_id,
7112                         print_mac(mac, priv->active_rxon.bssid_addr));
7113
7114
7115         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7116                 return;
7117
7118         mutex_lock(&priv->mutex);
7119
7120         if (!priv->vif || !priv->is_open) {
7121                 mutex_unlock(&priv->mutex);
7122                 return;
7123         }
7124         iwl4965_scan_cancel_timeout(priv, 200);
7125
7126         conf = ieee80211_get_hw_conf(priv->hw);
7127
7128         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7129         iwl4965_commit_rxon(priv);
7130
7131         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7132         iwl4965_setup_rxon_timing(priv);
7133         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7134                               sizeof(priv->rxon_timing), &priv->rxon_timing);
7135         if (rc)
7136                 IWL_WARNING("REPLY_RXON_TIMING failed - "
7137                             "Attempting to continue.\n");
7138
7139         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7140
7141 #ifdef CONFIG_IWL4965_HT
7142         if (priv->current_ht_config.is_ht)
7143                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
7144 #endif /* CONFIG_IWL4965_HT*/
7145         iwl4965_set_rxon_chain(priv);
7146         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7147
7148         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7149                         priv->assoc_id, priv->beacon_int);
7150
7151         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7152                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7153         else
7154                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7155
7156         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7157                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7158                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7159                 else
7160                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7161
7162                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7163                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7164
7165         }
7166
7167         iwl4965_commit_rxon(priv);
7168
7169         switch (priv->iw_mode) {
7170         case IEEE80211_IF_TYPE_STA:
7171                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7172                 break;
7173
7174         case IEEE80211_IF_TYPE_IBSS:
7175
7176                 /* clear out the station table */
7177                 iwl4965_clear_stations_table(priv);
7178
7179                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7180                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7181                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7182                 iwl4965_send_beacon_cmd(priv);
7183
7184                 break;
7185
7186         default:
7187                 IWL_ERROR("%s Should not be called in %d mode\n",
7188                                 __FUNCTION__, priv->iw_mode);
7189                 break;
7190         }
7191
7192         iwl4965_sequence_reset(priv);
7193
7194 #ifdef CONFIG_IWL4965_SENSITIVITY
7195         /* Enable Rx differential gain and sensitivity calibrations */
7196         iwl4965_chain_noise_reset(priv);
7197         priv->start_calib = 1;
7198 #endif /* CONFIG_IWL4965_SENSITIVITY */
7199
7200         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7201                 priv->assoc_station_added = 1;
7202
7203 #ifdef CONFIG_IWL4965_QOS
7204         iwl4965_activate_qos(priv, 0);
7205 #endif /* CONFIG_IWL4965_QOS */
7206         /* we have just associated, don't start scan too early */
7207         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7208         mutex_unlock(&priv->mutex);
7209 }
7210
7211 static void iwl4965_bg_abort_scan(struct work_struct *work)
7212 {
7213         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7214
7215         if (!iwl4965_is_ready(priv))
7216                 return;
7217
7218         mutex_lock(&priv->mutex);
7219
7220         set_bit(STATUS_SCAN_ABORTING, &priv->status);
7221         iwl4965_send_scan_abort(priv);
7222
7223         mutex_unlock(&priv->mutex);
7224 }
7225
7226 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7227
7228 static void iwl4965_bg_scan_completed(struct work_struct *work)
7229 {
7230         struct iwl4965_priv *priv =
7231             container_of(work, struct iwl4965_priv, scan_completed);
7232
7233         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7234
7235         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7236                 return;
7237
7238         if (test_bit(STATUS_CONF_PENDING, &priv->status))
7239                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
7240
7241         ieee80211_scan_completed(priv->hw);
7242
7243         /* Since setting the TXPOWER may have been deferred while
7244          * performing the scan, fire one off */
7245         mutex_lock(&priv->mutex);
7246         iwl4965_hw_reg_send_txpower(priv);
7247         mutex_unlock(&priv->mutex);
7248 }
7249
7250 /*****************************************************************************
7251  *
7252  * mac80211 entry point functions
7253  *
7254  *****************************************************************************/
7255
7256 #define UCODE_READY_TIMEOUT     (2 * HZ)
7257
7258 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7259 {
7260         struct iwl4965_priv *priv = hw->priv;
7261         int ret;
7262
7263         IWL_DEBUG_MAC80211("enter\n");
7264
7265         if (pci_enable_device(priv->pci_dev)) {
7266                 IWL_ERROR("Fail to pci_enable_device\n");
7267                 return -ENODEV;
7268         }
7269         pci_restore_state(priv->pci_dev);
7270         pci_enable_msi(priv->pci_dev);
7271
7272         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7273                           DRV_NAME, priv);
7274         if (ret) {
7275                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7276                 goto out_disable_msi;
7277         }
7278
7279         /* we should be verifying the device is ready to be opened */
7280         mutex_lock(&priv->mutex);
7281
7282         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7283         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7284          * ucode filename and max sizes are card-specific. */
7285
7286         if (!priv->ucode_code.len) {
7287                 ret = iwl4965_read_ucode(priv);
7288                 if (ret) {
7289                         IWL_ERROR("Could not read microcode: %d\n", ret);
7290                         mutex_unlock(&priv->mutex);
7291                         goto out_release_irq;
7292                 }
7293         }
7294
7295         ret = __iwl4965_up(priv);
7296
7297         mutex_unlock(&priv->mutex);
7298
7299         if (ret)
7300                 goto out_release_irq;
7301
7302         IWL_DEBUG_INFO("Start UP work done.\n");
7303
7304         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7305                 return 0;
7306
7307         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
7308          * mac80211 will not be run successfully. */
7309         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7310                         test_bit(STATUS_READY, &priv->status),
7311                         UCODE_READY_TIMEOUT);
7312         if (!ret) {
7313                 if (!test_bit(STATUS_READY, &priv->status)) {
7314                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7315                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
7316                         ret = -ETIMEDOUT;
7317                         goto out_release_irq;
7318                 }
7319         }
7320
7321         priv->is_open = 1;
7322         IWL_DEBUG_MAC80211("leave\n");
7323         return 0;
7324
7325 out_release_irq:
7326         free_irq(priv->pci_dev->irq, priv);
7327 out_disable_msi:
7328         pci_disable_msi(priv->pci_dev);
7329         pci_disable_device(priv->pci_dev);
7330         priv->is_open = 0;
7331         IWL_DEBUG_MAC80211("leave - failed\n");
7332         return ret;
7333 }
7334
7335 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7336 {
7337         struct iwl4965_priv *priv = hw->priv;
7338
7339         IWL_DEBUG_MAC80211("enter\n");
7340
7341         if (!priv->is_open) {
7342                 IWL_DEBUG_MAC80211("leave - skip\n");
7343                 return;
7344         }
7345
7346         priv->is_open = 0;
7347
7348         if (iwl4965_is_ready_rf(priv)) {
7349                 /* stop mac, cancel any scan request and clear
7350                  * RXON_FILTER_ASSOC_MSK BIT
7351                  */
7352                 mutex_lock(&priv->mutex);
7353                 iwl4965_scan_cancel_timeout(priv, 100);
7354                 cancel_delayed_work(&priv->post_associate);
7355                 mutex_unlock(&priv->mutex);
7356         }
7357
7358         iwl4965_down(priv);
7359
7360         flush_workqueue(priv->workqueue);
7361         free_irq(priv->pci_dev->irq, priv);
7362         pci_disable_msi(priv->pci_dev);
7363         pci_save_state(priv->pci_dev);
7364         pci_disable_device(priv->pci_dev);
7365
7366         IWL_DEBUG_MAC80211("leave\n");
7367 }
7368
7369 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7370                       struct ieee80211_tx_control *ctl)
7371 {
7372         struct iwl4965_priv *priv = hw->priv;
7373
7374         IWL_DEBUG_MAC80211("enter\n");
7375
7376         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7377                 IWL_DEBUG_MAC80211("leave - monitor\n");
7378                 return -1;
7379         }
7380
7381         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7382                      ctl->tx_rate->bitrate);
7383
7384         if (iwl4965_tx_skb(priv, skb, ctl))
7385                 dev_kfree_skb_any(skb);
7386
7387         IWL_DEBUG_MAC80211("leave\n");
7388         return 0;
7389 }
7390
7391 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7392                                  struct ieee80211_if_init_conf *conf)
7393 {
7394         struct iwl4965_priv *priv = hw->priv;
7395         unsigned long flags;
7396         DECLARE_MAC_BUF(mac);
7397
7398         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
7399
7400         if (priv->vif) {
7401                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
7402                 return -EOPNOTSUPP;
7403         }
7404
7405         spin_lock_irqsave(&priv->lock, flags);
7406         priv->vif = conf->vif;
7407
7408         spin_unlock_irqrestore(&priv->lock, flags);
7409
7410         mutex_lock(&priv->mutex);
7411
7412         if (conf->mac_addr) {
7413                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7414                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7415         }
7416
7417         if (iwl4965_is_ready(priv))
7418                 iwl4965_set_mode(priv, conf->type);
7419
7420         mutex_unlock(&priv->mutex);
7421
7422         IWL_DEBUG_MAC80211("leave\n");
7423         return 0;
7424 }
7425
7426 /**
7427  * iwl4965_mac_config - mac80211 config callback
7428  *
7429  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7430  * be set inappropriately and the driver currently sets the hardware up to
7431  * use it whenever needed.
7432  */
7433 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7434 {
7435         struct iwl4965_priv *priv = hw->priv;
7436         const struct iwl4965_channel_info *ch_info;
7437         unsigned long flags;
7438         int ret = 0;
7439
7440         mutex_lock(&priv->mutex);
7441         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
7442
7443         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7444
7445         if (!iwl4965_is_ready(priv)) {
7446                 IWL_DEBUG_MAC80211("leave - not ready\n");
7447                 ret = -EIO;
7448                 goto out;
7449         }
7450
7451         if (unlikely(!iwl4965_param_disable_hw_scan &&
7452                      test_bit(STATUS_SCANNING, &priv->status))) {
7453                 IWL_DEBUG_MAC80211("leave - scanning\n");
7454                 set_bit(STATUS_CONF_PENDING, &priv->status);
7455                 mutex_unlock(&priv->mutex);
7456                 return 0;
7457         }
7458
7459         spin_lock_irqsave(&priv->lock, flags);
7460
7461         ch_info = iwl4965_get_channel_info(priv, conf->channel->band,
7462                         ieee80211_frequency_to_channel(conf->channel->center_freq));
7463         if (!is_channel_valid(ch_info)) {
7464                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7465                 spin_unlock_irqrestore(&priv->lock, flags);
7466                 ret = -EINVAL;
7467                 goto out;
7468         }
7469
7470 #ifdef CONFIG_IWL4965_HT
7471         /* if we are switching from ht to 2.4 clear flags
7472          * from any ht related info since 2.4 does not
7473          * support ht */
7474         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
7475 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7476             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7477 #endif
7478         )
7479                 priv->staging_rxon.flags = 0;
7480 #endif /* CONFIG_IWL4965_HT */
7481
7482         iwl4965_set_rxon_channel(priv, conf->channel->band,
7483                 ieee80211_frequency_to_channel(conf->channel->center_freq));
7484
7485         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
7486
7487         /* The list of supported rates and rate mask can be different
7488          * for each band; since the band may have changed, reset
7489          * the rate mask to what mac80211 lists */
7490         iwl4965_set_rate(priv);
7491
7492         spin_unlock_irqrestore(&priv->lock, flags);
7493
7494 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7495         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7496                 iwl4965_hw_channel_switch(priv, conf->channel);
7497                 goto out;
7498         }
7499 #endif
7500
7501         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7502
7503         if (!conf->radio_enabled) {
7504                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7505                 goto out;
7506         }
7507
7508         if (iwl4965_is_rfkill(priv)) {
7509                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7510                 ret = -EIO;
7511                 goto out;
7512         }
7513
7514         iwl4965_set_rate(priv);
7515
7516         if (memcmp(&priv->active_rxon,
7517                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7518                 iwl4965_commit_rxon(priv);
7519         else
7520                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7521
7522         IWL_DEBUG_MAC80211("leave\n");
7523
7524 out:
7525         clear_bit(STATUS_CONF_PENDING, &priv->status);
7526         mutex_unlock(&priv->mutex);
7527         return ret;
7528 }
7529
7530 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7531 {
7532         int rc = 0;
7533
7534         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7535                 return;
7536
7537         /* The following should be done only at AP bring up */
7538         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7539
7540                 /* RXON - unassoc (to set timing command) */
7541                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7542                 iwl4965_commit_rxon(priv);
7543
7544                 /* RXON Timing */
7545                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7546                 iwl4965_setup_rxon_timing(priv);
7547                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7548                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7549                 if (rc)
7550                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7551                                         "Attempting to continue.\n");
7552
7553                 iwl4965_set_rxon_chain(priv);
7554
7555                 /* FIXME: what should be the assoc_id for AP? */
7556                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7557                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7558                         priv->staging_rxon.flags |=
7559                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7560                 else
7561                         priv->staging_rxon.flags &=
7562                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7563
7564                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7565                         if (priv->assoc_capability &
7566                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7567                                 priv->staging_rxon.flags |=
7568                                         RXON_FLG_SHORT_SLOT_MSK;
7569                         else
7570                                 priv->staging_rxon.flags &=
7571                                         ~RXON_FLG_SHORT_SLOT_MSK;
7572
7573                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7574                                 priv->staging_rxon.flags &=
7575                                         ~RXON_FLG_SHORT_SLOT_MSK;
7576                 }
7577                 /* restore RXON assoc */
7578                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7579                 iwl4965_commit_rxon(priv);
7580 #ifdef CONFIG_IWL4965_QOS
7581                 iwl4965_activate_qos(priv, 1);
7582 #endif
7583                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7584         }
7585         iwl4965_send_beacon_cmd(priv);
7586
7587         /* FIXME - we need to add code here to detect a totally new
7588          * configuration, reset the AP, unassoc, rxon timing, assoc,
7589          * clear sta table, add BCAST sta... */
7590 }
7591
7592 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
7593                                         struct ieee80211_vif *vif,
7594                                     struct ieee80211_if_conf *conf)
7595 {
7596         struct iwl4965_priv *priv = hw->priv;
7597         DECLARE_MAC_BUF(mac);
7598         unsigned long flags;
7599         int rc;
7600
7601         if (conf == NULL)
7602                 return -EIO;
7603
7604         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7605             (!conf->beacon || !conf->ssid_len)) {
7606                 IWL_DEBUG_MAC80211
7607                     ("Leaving in AP mode because HostAPD is not ready.\n");
7608                 return 0;
7609         }
7610
7611         if (!iwl4965_is_alive(priv))
7612                 return -EAGAIN;
7613
7614         mutex_lock(&priv->mutex);
7615
7616         if (conf->bssid)
7617                 IWL_DEBUG_MAC80211("bssid: %s\n",
7618                                    print_mac(mac, conf->bssid));
7619
7620 /*
7621  * very dubious code was here; the probe filtering flag is never set:
7622  *
7623         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7624             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7625  */
7626         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7627                 IWL_DEBUG_MAC80211("leave - scanning\n");
7628                 mutex_unlock(&priv->mutex);
7629                 return 0;
7630         }
7631
7632         if (priv->vif != vif) {
7633                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7634                 mutex_unlock(&priv->mutex);
7635                 return 0;
7636         }
7637
7638         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7639                 if (!conf->bssid) {
7640                         conf->bssid = priv->mac_addr;
7641                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7642                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7643                                            print_mac(mac, conf->bssid));
7644                 }
7645                 if (priv->ibss_beacon)
7646                         dev_kfree_skb(priv->ibss_beacon);
7647
7648                 priv->ibss_beacon = conf->beacon;
7649         }
7650
7651         if (iwl4965_is_rfkill(priv))
7652                 goto done;
7653
7654         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7655             !is_multicast_ether_addr(conf->bssid)) {
7656                 /* If there is currently a HW scan going on in the background
7657                  * then we need to cancel it else the RXON below will fail. */
7658                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7659                         IWL_WARNING("Aborted scan still in progress "
7660                                     "after 100ms\n");
7661                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7662                         mutex_unlock(&priv->mutex);
7663                         return -EAGAIN;
7664                 }
7665                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7666
7667                 /* TODO: Audit driver for usage of these members and see
7668                  * if mac80211 deprecates them (priv->bssid looks like it
7669                  * shouldn't be there, but I haven't scanned the IBSS code
7670                  * to verify) - jpk */
7671                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7672
7673                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7674                         iwl4965_config_ap(priv);
7675                 else {
7676                         rc = iwl4965_commit_rxon(priv);
7677                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7678                                 iwl4965_rxon_add_station(
7679                                         priv, priv->active_rxon.bssid_addr, 1);
7680                 }
7681
7682         } else {
7683                 iwl4965_scan_cancel_timeout(priv, 100);
7684                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7685                 iwl4965_commit_rxon(priv);
7686         }
7687
7688  done:
7689         spin_lock_irqsave(&priv->lock, flags);
7690         if (!conf->ssid_len)
7691                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7692         else
7693                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7694
7695         priv->essid_len = conf->ssid_len;
7696         spin_unlock_irqrestore(&priv->lock, flags);
7697
7698         IWL_DEBUG_MAC80211("leave\n");
7699         mutex_unlock(&priv->mutex);
7700
7701         return 0;
7702 }
7703
7704 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7705                                  unsigned int changed_flags,
7706                                  unsigned int *total_flags,
7707                                  int mc_count, struct dev_addr_list *mc_list)
7708 {
7709         /*
7710          * XXX: dummy
7711          * see also iwl4965_connection_init_rx_config
7712          */
7713         *total_flags = 0;
7714 }
7715
7716 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7717                                      struct ieee80211_if_init_conf *conf)
7718 {
7719         struct iwl4965_priv *priv = hw->priv;
7720
7721         IWL_DEBUG_MAC80211("enter\n");
7722
7723         mutex_lock(&priv->mutex);
7724
7725         if (iwl4965_is_ready_rf(priv)) {
7726                 iwl4965_scan_cancel_timeout(priv, 100);
7727                 cancel_delayed_work(&priv->post_associate);
7728                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7729                 iwl4965_commit_rxon(priv);
7730         }
7731         if (priv->vif == conf->vif) {
7732                 priv->vif = NULL;
7733                 memset(priv->bssid, 0, ETH_ALEN);
7734                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7735                 priv->essid_len = 0;
7736         }
7737         mutex_unlock(&priv->mutex);
7738
7739         IWL_DEBUG_MAC80211("leave\n");
7740
7741 }
7742
7743 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
7744                                      struct ieee80211_vif *vif,
7745                                      struct ieee80211_bss_conf *bss_conf,
7746                                      u32 changes)
7747 {
7748         struct iwl4965_priv *priv = hw->priv;
7749
7750         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
7751                 if (bss_conf->use_short_preamble)
7752                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7753                 else
7754                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7755         }
7756
7757         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
7758                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
7759                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7760                 else
7761                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7762         }
7763
7764         if (changes & BSS_CHANGED_ASSOC) {
7765                 /*
7766                  * TODO:
7767                  * do stuff instead of sniffing assoc resp
7768                  */
7769         }
7770
7771         if (iwl4965_is_associated(priv))
7772                 iwl4965_send_rxon_assoc(priv);
7773 }
7774
7775 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7776 {
7777         int rc = 0;
7778         unsigned long flags;
7779         struct iwl4965_priv *priv = hw->priv;
7780
7781         IWL_DEBUG_MAC80211("enter\n");
7782
7783         mutex_lock(&priv->mutex);
7784         spin_lock_irqsave(&priv->lock, flags);
7785
7786         if (!iwl4965_is_ready_rf(priv)) {
7787                 rc = -EIO;
7788                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7789                 goto out_unlock;
7790         }
7791
7792         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7793                 rc = -EIO;
7794                 IWL_ERROR("ERROR: APs don't scan\n");
7795                 goto out_unlock;
7796         }
7797
7798         /* we don't schedule scan within next_scan_jiffies period */
7799         if (priv->next_scan_jiffies &&
7800                         time_after(priv->next_scan_jiffies, jiffies)) {
7801                 rc = -EAGAIN;
7802                 goto out_unlock;
7803         }
7804         /* if we just finished scan ask for delay */
7805         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7806                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
7807                 rc = -EAGAIN;
7808                 goto out_unlock;
7809         }
7810         if (len) {
7811                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7812                                iwl4965_escape_essid(ssid, len), (int)len);
7813
7814                 priv->one_direct_scan = 1;
7815                 priv->direct_ssid_len = (u8)
7816                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7817                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7818         } else
7819                 priv->one_direct_scan = 0;
7820
7821         rc = iwl4965_scan_initiate(priv);
7822
7823         IWL_DEBUG_MAC80211("leave\n");
7824
7825 out_unlock:
7826         spin_unlock_irqrestore(&priv->lock, flags);
7827         mutex_unlock(&priv->mutex);
7828
7829         return rc;
7830 }
7831
7832 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7833                            const u8 *local_addr, const u8 *addr,
7834                            struct ieee80211_key_conf *key)
7835 {
7836         struct iwl4965_priv *priv = hw->priv;
7837         DECLARE_MAC_BUF(mac);
7838         int rc = 0;
7839         u8 sta_id;
7840
7841         IWL_DEBUG_MAC80211("enter\n");
7842
7843         if (!iwl4965_param_hwcrypto) {
7844                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7845                 return -EOPNOTSUPP;
7846         }
7847
7848         if (is_zero_ether_addr(addr))
7849                 /* only support pairwise keys */
7850                 return -EOPNOTSUPP;
7851
7852         sta_id = iwl4965_hw_find_station(priv, addr);
7853         if (sta_id == IWL_INVALID_STATION) {
7854                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7855                                    print_mac(mac, addr));
7856                 return -EINVAL;
7857         }
7858
7859         mutex_lock(&priv->mutex);
7860
7861         iwl4965_scan_cancel_timeout(priv, 100);
7862
7863         switch (cmd) {
7864         case  SET_KEY:
7865                 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7866                 if (!rc) {
7867                         iwl4965_set_rxon_hwcrypto(priv, 1);
7868                         iwl4965_commit_rxon(priv);
7869                         key->hw_key_idx = sta_id;
7870                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7871                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7872                 }
7873                 break;
7874         case DISABLE_KEY:
7875                 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7876                 if (!rc) {
7877                         iwl4965_set_rxon_hwcrypto(priv, 0);
7878                         iwl4965_commit_rxon(priv);
7879                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7880                 }
7881                 break;
7882         default:
7883                 rc = -EINVAL;
7884         }
7885
7886         IWL_DEBUG_MAC80211("leave\n");
7887         mutex_unlock(&priv->mutex);
7888
7889         return rc;
7890 }
7891
7892 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7893                            const struct ieee80211_tx_queue_params *params)
7894 {
7895         struct iwl4965_priv *priv = hw->priv;
7896 #ifdef CONFIG_IWL4965_QOS
7897         unsigned long flags;
7898         int q;
7899 #endif /* CONFIG_IWL4965_QOS */
7900
7901         IWL_DEBUG_MAC80211("enter\n");
7902
7903         if (!iwl4965_is_ready_rf(priv)) {
7904                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7905                 return -EIO;
7906         }
7907
7908         if (queue >= AC_NUM) {
7909                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7910                 return 0;
7911         }
7912
7913 #ifdef CONFIG_IWL4965_QOS
7914         if (!priv->qos_data.qos_enable) {
7915                 priv->qos_data.qos_active = 0;
7916                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7917                 return 0;
7918         }
7919         q = AC_NUM - 1 - queue;
7920
7921         spin_lock_irqsave(&priv->lock, flags);
7922
7923         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7924         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7925         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7926         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7927                         cpu_to_le16((params->burst_time * 100));
7928
7929         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7930         priv->qos_data.qos_active = 1;
7931
7932         spin_unlock_irqrestore(&priv->lock, flags);
7933
7934         mutex_lock(&priv->mutex);
7935         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7936                 iwl4965_activate_qos(priv, 1);
7937         else if (priv->assoc_id && iwl4965_is_associated(priv))
7938                 iwl4965_activate_qos(priv, 0);
7939
7940         mutex_unlock(&priv->mutex);
7941
7942 #endif /*CONFIG_IWL4965_QOS */
7943
7944         IWL_DEBUG_MAC80211("leave\n");
7945         return 0;
7946 }
7947
7948 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7949                                 struct ieee80211_tx_queue_stats *stats)
7950 {
7951         struct iwl4965_priv *priv = hw->priv;
7952         int i, avail;
7953         struct iwl4965_tx_queue *txq;
7954         struct iwl4965_queue *q;
7955         unsigned long flags;
7956
7957         IWL_DEBUG_MAC80211("enter\n");
7958
7959         if (!iwl4965_is_ready_rf(priv)) {
7960                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7961                 return -EIO;
7962         }
7963
7964         spin_lock_irqsave(&priv->lock, flags);
7965
7966         for (i = 0; i < AC_NUM; i++) {
7967                 txq = &priv->txq[i];
7968                 q = &txq->q;
7969                 avail = iwl4965_queue_space(q);
7970
7971                 stats->data[i].len = q->n_window - avail;
7972                 stats->data[i].limit = q->n_window - q->high_mark;
7973                 stats->data[i].count = q->n_window;
7974
7975         }
7976         spin_unlock_irqrestore(&priv->lock, flags);
7977
7978         IWL_DEBUG_MAC80211("leave\n");
7979
7980         return 0;
7981 }
7982
7983 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7984                              struct ieee80211_low_level_stats *stats)
7985 {
7986         IWL_DEBUG_MAC80211("enter\n");
7987         IWL_DEBUG_MAC80211("leave\n");
7988
7989         return 0;
7990 }
7991
7992 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7993 {
7994         IWL_DEBUG_MAC80211("enter\n");
7995         IWL_DEBUG_MAC80211("leave\n");
7996
7997         return 0;
7998 }
7999
8000 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
8001 {
8002         struct iwl4965_priv *priv = hw->priv;
8003         unsigned long flags;
8004
8005         mutex_lock(&priv->mutex);
8006         IWL_DEBUG_MAC80211("enter\n");
8007
8008         priv->lq_mngr.lq_ready = 0;
8009 #ifdef CONFIG_IWL4965_HT
8010         spin_lock_irqsave(&priv->lock, flags);
8011         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
8012         spin_unlock_irqrestore(&priv->lock, flags);
8013 #endif /* CONFIG_IWL4965_HT */
8014
8015 #ifdef CONFIG_IWL4965_QOS
8016         iwl4965_reset_qos(priv);
8017 #endif
8018
8019         cancel_delayed_work(&priv->post_associate);
8020
8021         spin_lock_irqsave(&priv->lock, flags);
8022         priv->assoc_id = 0;
8023         priv->assoc_capability = 0;
8024         priv->call_post_assoc_from_beacon = 0;
8025         priv->assoc_station_added = 0;
8026
8027         /* new association get rid of ibss beacon skb */
8028         if (priv->ibss_beacon)
8029                 dev_kfree_skb(priv->ibss_beacon);
8030
8031         priv->ibss_beacon = NULL;
8032
8033         priv->beacon_int = priv->hw->conf.beacon_int;
8034         priv->timestamp1 = 0;
8035         priv->timestamp0 = 0;
8036         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
8037                 priv->beacon_int = 0;
8038
8039         spin_unlock_irqrestore(&priv->lock, flags);
8040
8041         if (!iwl4965_is_ready_rf(priv)) {
8042                 IWL_DEBUG_MAC80211("leave - not ready\n");
8043                 mutex_unlock(&priv->mutex);
8044                 return;
8045         }
8046
8047         /* we are restarting association process
8048          * clear RXON_FILTER_ASSOC_MSK bit
8049          */
8050         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
8051                 iwl4965_scan_cancel_timeout(priv, 100);
8052                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
8053                 iwl4965_commit_rxon(priv);
8054         }
8055
8056         /* Per mac80211.h: This is only used in IBSS mode... */
8057         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8058
8059                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
8060                 mutex_unlock(&priv->mutex);
8061                 return;
8062         }
8063
8064         priv->only_active_channel = 0;
8065
8066         iwl4965_set_rate(priv);
8067
8068         mutex_unlock(&priv->mutex);
8069
8070         IWL_DEBUG_MAC80211("leave\n");
8071 }
8072
8073 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
8074                                  struct ieee80211_tx_control *control)
8075 {
8076         struct iwl4965_priv *priv = hw->priv;
8077         unsigned long flags;
8078
8079         mutex_lock(&priv->mutex);
8080         IWL_DEBUG_MAC80211("enter\n");
8081
8082         if (!iwl4965_is_ready_rf(priv)) {
8083                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8084                 mutex_unlock(&priv->mutex);
8085                 return -EIO;
8086         }
8087
8088         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8089                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
8090                 mutex_unlock(&priv->mutex);
8091                 return -EIO;
8092         }
8093
8094         spin_lock_irqsave(&priv->lock, flags);
8095
8096         if (priv->ibss_beacon)
8097                 dev_kfree_skb(priv->ibss_beacon);
8098
8099         priv->ibss_beacon = skb;
8100
8101         priv->assoc_id = 0;
8102
8103         IWL_DEBUG_MAC80211("leave\n");
8104         spin_unlock_irqrestore(&priv->lock, flags);
8105
8106 #ifdef CONFIG_IWL4965_QOS
8107         iwl4965_reset_qos(priv);
8108 #endif
8109
8110         queue_work(priv->workqueue, &priv->post_associate.work);
8111
8112         mutex_unlock(&priv->mutex);
8113
8114         return 0;
8115 }
8116
8117 #ifdef CONFIG_IWL4965_HT
8118
8119 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
8120                                  struct iwl4965_priv *priv)
8121 {
8122         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
8123         struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
8124         struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
8125
8126         IWL_DEBUG_MAC80211("enter: \n");
8127
8128         if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
8129                 iwl_conf->is_ht = 0;
8130                 return;
8131         }
8132
8133         iwl_conf->is_ht = 1;
8134         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
8135
8136         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
8137                 iwl_conf->sgf |= 0x1;
8138         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
8139                 iwl_conf->sgf |= 0x2;
8140
8141         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
8142         iwl_conf->max_amsdu_size =
8143                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
8144         iwl_conf->supported_chan_width =
8145                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
8146         iwl_conf->tx_mimo_ps_mode =
8147                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
8148         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
8149
8150         iwl_conf->control_channel = ht_bss_conf->primary_channel;
8151         iwl_conf->extension_chan_offset =
8152                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
8153         iwl_conf->tx_chan_width =
8154                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
8155         iwl_conf->ht_protection =
8156                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
8157         iwl_conf->non_GF_STA_present =
8158                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
8159
8160         IWL_DEBUG_MAC80211("control channel %d\n",
8161                 iwl_conf->control_channel);
8162         IWL_DEBUG_MAC80211("leave\n");
8163 }
8164
8165 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8166                                struct ieee80211_conf *conf)
8167 {
8168         struct iwl4965_priv *priv = hw->priv;
8169
8170         IWL_DEBUG_MAC80211("enter: \n");
8171
8172         iwl4965_ht_info_fill(conf, priv);
8173         iwl4965_set_rxon_chain(priv);
8174
8175         if (priv && priv->assoc_id &&
8176             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8177                 unsigned long flags;
8178
8179                 spin_lock_irqsave(&priv->lock, flags);
8180                 if (priv->beacon_int)
8181                         queue_work(priv->workqueue, &priv->post_associate.work);
8182                 else
8183                         priv->call_post_assoc_from_beacon = 1;
8184                 spin_unlock_irqrestore(&priv->lock, flags);
8185         }
8186
8187         IWL_DEBUG_MAC80211("leave:\n");
8188         return 0;
8189 }
8190
8191 #endif /*CONFIG_IWL4965_HT*/
8192
8193 /*****************************************************************************
8194  *
8195  * sysfs attributes
8196  *
8197  *****************************************************************************/
8198
8199 #ifdef CONFIG_IWL4965_DEBUG
8200
8201 /*
8202  * The following adds a new attribute to the sysfs representation
8203  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8204  * used for controlling the debug level.
8205  *
8206  * See the level definitions in iwl for details.
8207  */
8208
8209 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8210 {
8211         return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8212 }
8213 static ssize_t store_debug_level(struct device_driver *d,
8214                                  const char *buf, size_t count)
8215 {
8216         char *p = (char *)buf;
8217         u32 val;
8218
8219         val = simple_strtoul(p, &p, 0);
8220         if (p == buf)
8221                 printk(KERN_INFO DRV_NAME
8222                        ": %s is not in hex or decimal form.\n", buf);
8223         else
8224                 iwl4965_debug_level = val;
8225
8226         return strnlen(buf, count);
8227 }
8228
8229 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8230                    show_debug_level, store_debug_level);
8231
8232 #endif /* CONFIG_IWL4965_DEBUG */
8233
8234 static ssize_t show_rf_kill(struct device *d,
8235                             struct device_attribute *attr, char *buf)
8236 {
8237         /*
8238          * 0 - RF kill not enabled
8239          * 1 - SW based RF kill active (sysfs)
8240          * 2 - HW based RF kill active
8241          * 3 - Both HW and SW based RF kill active
8242          */
8243         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8244         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8245                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8246
8247         return sprintf(buf, "%i\n", val);
8248 }
8249
8250 static ssize_t store_rf_kill(struct device *d,
8251                              struct device_attribute *attr,
8252                              const char *buf, size_t count)
8253 {
8254         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8255
8256         mutex_lock(&priv->mutex);
8257         iwl4965_radio_kill_sw(priv, buf[0] == '1');
8258         mutex_unlock(&priv->mutex);
8259
8260         return count;
8261 }
8262
8263 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8264
8265 static ssize_t show_temperature(struct device *d,
8266                                 struct device_attribute *attr, char *buf)
8267 {
8268         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8269
8270         if (!iwl4965_is_alive(priv))
8271                 return -EAGAIN;
8272
8273         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8274 }
8275
8276 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8277
8278 static ssize_t show_rs_window(struct device *d,
8279                               struct device_attribute *attr,
8280                               char *buf)
8281 {
8282         struct iwl4965_priv *priv = d->driver_data;
8283         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8284 }
8285 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8286
8287 static ssize_t show_tx_power(struct device *d,
8288                              struct device_attribute *attr, char *buf)
8289 {
8290         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8291         return sprintf(buf, "%d\n", priv->user_txpower_limit);
8292 }
8293
8294 static ssize_t store_tx_power(struct device *d,
8295                               struct device_attribute *attr,
8296                               const char *buf, size_t count)
8297 {
8298         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8299         char *p = (char *)buf;
8300         u32 val;
8301
8302         val = simple_strtoul(p, &p, 10);
8303         if (p == buf)
8304                 printk(KERN_INFO DRV_NAME
8305                        ": %s is not in decimal form.\n", buf);
8306         else
8307                 iwl4965_hw_reg_set_txpower(priv, val);
8308
8309         return count;
8310 }
8311
8312 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8313
8314 static ssize_t show_flags(struct device *d,
8315                           struct device_attribute *attr, char *buf)
8316 {
8317         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8318
8319         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8320 }
8321
8322 static ssize_t store_flags(struct device *d,
8323                            struct device_attribute *attr,
8324                            const char *buf, size_t count)
8325 {
8326         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8327         u32 flags = simple_strtoul(buf, NULL, 0);
8328
8329         mutex_lock(&priv->mutex);
8330         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8331                 /* Cancel any currently running scans... */
8332                 if (iwl4965_scan_cancel_timeout(priv, 100))
8333                         IWL_WARNING("Could not cancel scan.\n");
8334                 else {
8335                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8336                                        flags);
8337                         priv->staging_rxon.flags = cpu_to_le32(flags);
8338                         iwl4965_commit_rxon(priv);
8339                 }
8340         }
8341         mutex_unlock(&priv->mutex);
8342
8343         return count;
8344 }
8345
8346 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8347
8348 static ssize_t show_filter_flags(struct device *d,
8349                                  struct device_attribute *attr, char *buf)
8350 {
8351         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8352
8353         return sprintf(buf, "0x%04X\n",
8354                 le32_to_cpu(priv->active_rxon.filter_flags));
8355 }
8356
8357 static ssize_t store_filter_flags(struct device *d,
8358                                   struct device_attribute *attr,
8359                                   const char *buf, size_t count)
8360 {
8361         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8362         u32 filter_flags = simple_strtoul(buf, NULL, 0);
8363
8364         mutex_lock(&priv->mutex);
8365         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8366                 /* Cancel any currently running scans... */
8367                 if (iwl4965_scan_cancel_timeout(priv, 100))
8368                         IWL_WARNING("Could not cancel scan.\n");
8369                 else {
8370                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8371                                        "0x%04X\n", filter_flags);
8372                         priv->staging_rxon.filter_flags =
8373                                 cpu_to_le32(filter_flags);
8374                         iwl4965_commit_rxon(priv);
8375                 }
8376         }
8377         mutex_unlock(&priv->mutex);
8378
8379         return count;
8380 }
8381
8382 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8383                    store_filter_flags);
8384
8385 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8386
8387 static ssize_t show_measurement(struct device *d,
8388                                 struct device_attribute *attr, char *buf)
8389 {
8390         struct iwl4965_priv *priv = dev_get_drvdata(d);
8391         struct iwl4965_spectrum_notification measure_report;
8392         u32 size = sizeof(measure_report), len = 0, ofs = 0;
8393         u8 *data = (u8 *) & measure_report;
8394         unsigned long flags;
8395
8396         spin_lock_irqsave(&priv->lock, flags);
8397         if (!(priv->measurement_status & MEASUREMENT_READY)) {
8398                 spin_unlock_irqrestore(&priv->lock, flags);
8399                 return 0;
8400         }
8401         memcpy(&measure_report, &priv->measure_report, size);
8402         priv->measurement_status = 0;
8403         spin_unlock_irqrestore(&priv->lock, flags);
8404
8405         while (size && (PAGE_SIZE - len)) {
8406                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8407                                    PAGE_SIZE - len, 1);
8408                 len = strlen(buf);
8409                 if (PAGE_SIZE - len)
8410                         buf[len++] = '\n';
8411
8412                 ofs += 16;
8413                 size -= min(size, 16U);
8414         }
8415
8416         return len;
8417 }
8418
8419 static ssize_t store_measurement(struct device *d,
8420                                  struct device_attribute *attr,
8421                                  const char *buf, size_t count)
8422 {
8423         struct iwl4965_priv *priv = dev_get_drvdata(d);
8424         struct ieee80211_measurement_params params = {
8425                 .channel = le16_to_cpu(priv->active_rxon.channel),
8426                 .start_time = cpu_to_le64(priv->last_tsf),
8427                 .duration = cpu_to_le16(1),
8428         };
8429         u8 type = IWL_MEASURE_BASIC;
8430         u8 buffer[32];
8431         u8 channel;
8432
8433         if (count) {
8434                 char *p = buffer;
8435                 strncpy(buffer, buf, min(sizeof(buffer), count));
8436                 channel = simple_strtoul(p, NULL, 0);
8437                 if (channel)
8438                         params.channel = channel;
8439
8440                 p = buffer;
8441                 while (*p && *p != ' ')
8442                         p++;
8443                 if (*p)
8444                         type = simple_strtoul(p + 1, NULL, 0);
8445         }
8446
8447         IWL_DEBUG_INFO("Invoking measurement of type %d on "
8448                        "channel %d (for '%s')\n", type, params.channel, buf);
8449         iwl4965_get_measurement(priv, &params, type);
8450
8451         return count;
8452 }
8453
8454 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8455                    show_measurement, store_measurement);
8456 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8457
8458 static ssize_t store_retry_rate(struct device *d,
8459                                 struct device_attribute *attr,
8460                                 const char *buf, size_t count)
8461 {
8462         struct iwl4965_priv *priv = dev_get_drvdata(d);
8463
8464         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8465         if (priv->retry_rate <= 0)
8466                 priv->retry_rate = 1;
8467
8468         return count;
8469 }
8470
8471 static ssize_t show_retry_rate(struct device *d,
8472                                struct device_attribute *attr, char *buf)
8473 {
8474         struct iwl4965_priv *priv = dev_get_drvdata(d);
8475         return sprintf(buf, "%d", priv->retry_rate);
8476 }
8477
8478 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8479                    store_retry_rate);
8480
8481 static ssize_t store_power_level(struct device *d,
8482                                  struct device_attribute *attr,
8483                                  const char *buf, size_t count)
8484 {
8485         struct iwl4965_priv *priv = dev_get_drvdata(d);
8486         int rc;
8487         int mode;
8488
8489         mode = simple_strtoul(buf, NULL, 0);
8490         mutex_lock(&priv->mutex);
8491
8492         if (!iwl4965_is_ready(priv)) {
8493                 rc = -EAGAIN;
8494                 goto out;
8495         }
8496
8497         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8498                 mode = IWL_POWER_AC;
8499         else
8500                 mode |= IWL_POWER_ENABLED;
8501
8502         if (mode != priv->power_mode) {
8503                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8504                 if (rc) {
8505                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8506                         goto out;
8507                 }
8508                 priv->power_mode = mode;
8509         }
8510
8511         rc = count;
8512
8513  out:
8514         mutex_unlock(&priv->mutex);
8515         return rc;
8516 }
8517
8518 #define MAX_WX_STRING 80
8519
8520 /* Values are in microsecond */
8521 static const s32 timeout_duration[] = {
8522         350000,
8523         250000,
8524         75000,
8525         37000,
8526         25000,
8527 };
8528 static const s32 period_duration[] = {
8529         400000,
8530         700000,
8531         1000000,
8532         1000000,
8533         1000000
8534 };
8535
8536 static ssize_t show_power_level(struct device *d,
8537                                 struct device_attribute *attr, char *buf)
8538 {
8539         struct iwl4965_priv *priv = dev_get_drvdata(d);
8540         int level = IWL_POWER_LEVEL(priv->power_mode);
8541         char *p = buf;
8542
8543         p += sprintf(p, "%d ", level);
8544         switch (level) {
8545         case IWL_POWER_MODE_CAM:
8546         case IWL_POWER_AC:
8547                 p += sprintf(p, "(AC)");
8548                 break;
8549         case IWL_POWER_BATTERY:
8550                 p += sprintf(p, "(BATTERY)");
8551                 break;
8552         default:
8553                 p += sprintf(p,
8554                              "(Timeout %dms, Period %dms)",
8555                              timeout_duration[level - 1] / 1000,
8556                              period_duration[level - 1] / 1000);
8557         }
8558
8559         if (!(priv->power_mode & IWL_POWER_ENABLED))
8560                 p += sprintf(p, " OFF\n");
8561         else
8562                 p += sprintf(p, " \n");
8563
8564         return (p - buf + 1);
8565
8566 }
8567
8568 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8569                    store_power_level);
8570
8571 static ssize_t show_channels(struct device *d,
8572                              struct device_attribute *attr, char *buf)
8573 {
8574         /* all this shit doesn't belong into sysfs anyway */
8575         return 0;
8576 }
8577
8578 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8579
8580 static ssize_t show_statistics(struct device *d,
8581                                struct device_attribute *attr, char *buf)
8582 {
8583         struct iwl4965_priv *priv = dev_get_drvdata(d);
8584         u32 size = sizeof(struct iwl4965_notif_statistics);
8585         u32 len = 0, ofs = 0;
8586         u8 *data = (u8 *) & priv->statistics;
8587         int rc = 0;
8588
8589         if (!iwl4965_is_alive(priv))
8590                 return -EAGAIN;
8591
8592         mutex_lock(&priv->mutex);
8593         rc = iwl4965_send_statistics_request(priv);
8594         mutex_unlock(&priv->mutex);
8595
8596         if (rc) {
8597                 len = sprintf(buf,
8598                               "Error sending statistics request: 0x%08X\n", rc);
8599                 return len;
8600         }
8601
8602         while (size && (PAGE_SIZE - len)) {
8603                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8604                                    PAGE_SIZE - len, 1);
8605                 len = strlen(buf);
8606                 if (PAGE_SIZE - len)
8607                         buf[len++] = '\n';
8608
8609                 ofs += 16;
8610                 size -= min(size, 16U);
8611         }
8612
8613         return len;
8614 }
8615
8616 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8617
8618 static ssize_t show_antenna(struct device *d,
8619                             struct device_attribute *attr, char *buf)
8620 {
8621         struct iwl4965_priv *priv = dev_get_drvdata(d);
8622
8623         if (!iwl4965_is_alive(priv))
8624                 return -EAGAIN;
8625
8626         return sprintf(buf, "%d\n", priv->antenna);
8627 }
8628
8629 static ssize_t store_antenna(struct device *d,
8630                              struct device_attribute *attr,
8631                              const char *buf, size_t count)
8632 {
8633         int ant;
8634         struct iwl4965_priv *priv = dev_get_drvdata(d);
8635
8636         if (count == 0)
8637                 return 0;
8638
8639         if (sscanf(buf, "%1i", &ant) != 1) {
8640                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8641                 return count;
8642         }
8643
8644         if ((ant >= 0) && (ant <= 2)) {
8645                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8646                 priv->antenna = (enum iwl4965_antenna)ant;
8647         } else
8648                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8649
8650
8651         return count;
8652 }
8653
8654 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8655
8656 static ssize_t show_status(struct device *d,
8657                            struct device_attribute *attr, char *buf)
8658 {
8659         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8660         if (!iwl4965_is_alive(priv))
8661                 return -EAGAIN;
8662         return sprintf(buf, "0x%08x\n", (int)priv->status);
8663 }
8664
8665 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8666
8667 static ssize_t dump_error_log(struct device *d,
8668                               struct device_attribute *attr,
8669                               const char *buf, size_t count)
8670 {
8671         char *p = (char *)buf;
8672
8673         if (p[0] == '1')
8674                 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8675
8676         return strnlen(buf, count);
8677 }
8678
8679 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8680
8681 static ssize_t dump_event_log(struct device *d,
8682                               struct device_attribute *attr,
8683                               const char *buf, size_t count)
8684 {
8685         char *p = (char *)buf;
8686
8687         if (p[0] == '1')
8688                 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8689
8690         return strnlen(buf, count);
8691 }
8692
8693 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8694
8695 /*****************************************************************************
8696  *
8697  * driver setup and teardown
8698  *
8699  *****************************************************************************/
8700
8701 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8702 {
8703         priv->workqueue = create_workqueue(DRV_NAME);
8704
8705         init_waitqueue_head(&priv->wait_command_queue);
8706
8707         INIT_WORK(&priv->up, iwl4965_bg_up);
8708         INIT_WORK(&priv->restart, iwl4965_bg_restart);
8709         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8710         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8711         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8712         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8713         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8714         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8715         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8716         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8717         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8718         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8719
8720         iwl4965_hw_setup_deferred_work(priv);
8721
8722         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8723                      iwl4965_irq_tasklet, (unsigned long)priv);
8724 }
8725
8726 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
8727 {
8728         iwl4965_hw_cancel_deferred_work(priv);
8729
8730         cancel_delayed_work_sync(&priv->init_alive_start);
8731         cancel_delayed_work(&priv->scan_check);
8732         cancel_delayed_work(&priv->alive_start);
8733         cancel_delayed_work(&priv->post_associate);
8734         cancel_work_sync(&priv->beacon_update);
8735 }
8736
8737 static struct attribute *iwl4965_sysfs_entries[] = {
8738         &dev_attr_antenna.attr,
8739         &dev_attr_channels.attr,
8740         &dev_attr_dump_errors.attr,
8741         &dev_attr_dump_events.attr,
8742         &dev_attr_flags.attr,
8743         &dev_attr_filter_flags.attr,
8744 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8745         &dev_attr_measurement.attr,
8746 #endif
8747         &dev_attr_power_level.attr,
8748         &dev_attr_retry_rate.attr,
8749         &dev_attr_rf_kill.attr,
8750         &dev_attr_rs_window.attr,
8751         &dev_attr_statistics.attr,
8752         &dev_attr_status.attr,
8753         &dev_attr_temperature.attr,
8754         &dev_attr_tx_power.attr,
8755
8756         NULL
8757 };
8758
8759 static struct attribute_group iwl4965_attribute_group = {
8760         .name = NULL,           /* put in device directory */
8761         .attrs = iwl4965_sysfs_entries,
8762 };
8763
8764 static struct ieee80211_ops iwl4965_hw_ops = {
8765         .tx = iwl4965_mac_tx,
8766         .start = iwl4965_mac_start,
8767         .stop = iwl4965_mac_stop,
8768         .add_interface = iwl4965_mac_add_interface,
8769         .remove_interface = iwl4965_mac_remove_interface,
8770         .config = iwl4965_mac_config,
8771         .config_interface = iwl4965_mac_config_interface,
8772         .configure_filter = iwl4965_configure_filter,
8773         .set_key = iwl4965_mac_set_key,
8774         .get_stats = iwl4965_mac_get_stats,
8775         .get_tx_stats = iwl4965_mac_get_tx_stats,
8776         .conf_tx = iwl4965_mac_conf_tx,
8777         .get_tsf = iwl4965_mac_get_tsf,
8778         .reset_tsf = iwl4965_mac_reset_tsf,
8779         .beacon_update = iwl4965_mac_beacon_update,
8780         .bss_info_changed = iwl4965_bss_info_changed,
8781 #ifdef CONFIG_IWL4965_HT
8782         .conf_ht = iwl4965_mac_conf_ht,
8783         .ampdu_action = iwl4965_mac_ampdu_action,
8784 #endif  /* CONFIG_IWL4965_HT */
8785         .hw_scan = iwl4965_mac_hw_scan
8786 };
8787
8788 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8789 {
8790         int err = 0;
8791         struct iwl4965_priv *priv;
8792         struct ieee80211_hw *hw;
8793         int i;
8794         DECLARE_MAC_BUF(mac);
8795
8796         /* Disabling hardware scan means that mac80211 will perform scans
8797          * "the hard way", rather than using device's scan. */
8798         if (iwl4965_param_disable_hw_scan) {
8799                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8800                 iwl4965_hw_ops.hw_scan = NULL;
8801         }
8802
8803         if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8804             (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8805                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8806                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8807                 err = -EINVAL;
8808                 goto out;
8809         }
8810
8811         /* mac80211 allocates memory for this device instance, including
8812          *   space for this driver's private structure */
8813         hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
8814         if (hw == NULL) {
8815                 IWL_ERROR("Can not allocate network device\n");
8816                 err = -ENOMEM;
8817                 goto out;
8818         }
8819         SET_IEEE80211_DEV(hw, &pdev->dev);
8820
8821         hw->rate_control_algorithm = "iwl-4965-rs";
8822
8823         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8824         priv = hw->priv;
8825         priv->hw = hw;
8826
8827         priv->pci_dev = pdev;
8828         priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
8829 #ifdef CONFIG_IWL4965_DEBUG
8830         iwl4965_debug_level = iwl4965_param_debug;
8831         atomic_set(&priv->restrict_refcnt, 0);
8832 #endif
8833         priv->retry_rate = 1;
8834
8835         priv->ibss_beacon = NULL;
8836
8837         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8838          *   the range of signal quality values that we'll provide.
8839          * Negative values for level/noise indicate that we'll provide dBm.
8840          * For WE, at least, non-0 values here *enable* display of values
8841          *   in app (iwconfig). */
8842         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
8843         hw->max_noise = -20;    /* noise level, negative indicates dBm */
8844         hw->max_signal = 100;   /* link quality indication (%) */
8845
8846         /* Tell mac80211 our Tx characteristics */
8847         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8848
8849         /* Default value; 4 EDCA QOS priorities */
8850         hw->queues = 4;
8851 #ifdef CONFIG_IWL4965_HT
8852         /* Enhanced value; more queues, to support 11n aggregation */
8853         hw->queues = 16;
8854 #endif /* CONFIG_IWL4965_HT */
8855
8856         spin_lock_init(&priv->lock);
8857         spin_lock_init(&priv->power_data.lock);
8858         spin_lock_init(&priv->sta_lock);
8859         spin_lock_init(&priv->hcmd_lock);
8860         spin_lock_init(&priv->lq_mngr.lock);
8861
8862         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8863                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8864
8865         INIT_LIST_HEAD(&priv->free_frames);
8866
8867         mutex_init(&priv->mutex);
8868         if (pci_enable_device(pdev)) {
8869                 err = -ENODEV;
8870                 goto out_ieee80211_free_hw;
8871         }
8872
8873         pci_set_master(pdev);
8874
8875         /* Clear the driver's (not device's) station table */
8876         iwl4965_clear_stations_table(priv);
8877
8878         priv->data_retry_limit = -1;
8879         priv->ieee_channels = NULL;
8880         priv->ieee_rates = NULL;
8881         priv->band = IEEE80211_BAND_2GHZ;
8882
8883         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8884         if (!err)
8885                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8886         if (err) {
8887                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8888                 goto out_pci_disable_device;
8889         }
8890
8891         pci_set_drvdata(pdev, priv);
8892         err = pci_request_regions(pdev, DRV_NAME);
8893         if (err)
8894                 goto out_pci_disable_device;
8895
8896         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8897          * PCI Tx retries from interfering with C3 CPU state */
8898         pci_write_config_byte(pdev, 0x41, 0x00);
8899
8900         priv->hw_base = pci_iomap(pdev, 0, 0);
8901         if (!priv->hw_base) {
8902                 err = -ENODEV;
8903                 goto out_pci_release_regions;
8904         }
8905
8906         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8907                         (unsigned long long) pci_resource_len(pdev, 0));
8908         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8909
8910         /* Initialize module parameter values here */
8911
8912         /* Disable radio (SW RF KILL) via parameter when loading driver */
8913         if (iwl4965_param_disable) {
8914                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8915                 IWL_DEBUG_INFO("Radio disabled.\n");
8916         }
8917
8918         priv->iw_mode = IEEE80211_IF_TYPE_STA;
8919
8920         priv->ps_mode = 0;
8921         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
8922         priv->valid_antenna = 0x7;      /* assume all 3 connected */
8923         priv->ps_mode = IWL_MIMO_PS_NONE;
8924
8925         /* Choose which receivers/antennas to use */
8926         iwl4965_set_rxon_chain(priv);
8927
8928         printk(KERN_INFO DRV_NAME
8929                ": Detected Intel Wireless WiFi Link 4965AGN\n");
8930
8931         /* Device-specific setup */
8932         if (iwl4965_hw_set_hw_setting(priv)) {
8933                 IWL_ERROR("failed to set hw settings\n");
8934                 goto out_iounmap;
8935         }
8936
8937 #ifdef CONFIG_IWL4965_QOS
8938         if (iwl4965_param_qos_enable)
8939                 priv->qos_data.qos_enable = 1;
8940
8941         iwl4965_reset_qos(priv);
8942
8943         priv->qos_data.qos_active = 0;
8944         priv->qos_data.qos_cap.val = 0;
8945 #endif /* CONFIG_IWL4965_QOS */
8946
8947         iwl4965_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8948         iwl4965_setup_deferred_work(priv);
8949         iwl4965_setup_rx_handlers(priv);
8950
8951         priv->rates_mask = IWL_RATES_MASK;
8952         /* If power management is turned on, default to AC mode */
8953         priv->power_mode = IWL_POWER_AC;
8954         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8955
8956         iwl4965_disable_interrupts(priv);
8957
8958         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8959         if (err) {
8960                 IWL_ERROR("failed to create sysfs device attributes\n");
8961                 goto out_release_irq;
8962         }
8963
8964         /* nic init */
8965         iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8966                     CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8967
8968         iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8969         err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
8970                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8971                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8972         if (err < 0) {
8973                 IWL_DEBUG_INFO("Failed to init the card\n");
8974                 goto out_remove_sysfs;
8975         }
8976         /* Read the EEPROM */
8977         err = iwl4965_eeprom_init(priv);
8978         if (err) {
8979                 IWL_ERROR("Unable to init EEPROM\n");
8980                 goto out_remove_sysfs;
8981         }
8982         /* MAC Address location in EEPROM same for 3945/4965 */
8983         get_eeprom_mac(priv, priv->mac_addr);
8984         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8985         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8986
8987         err = iwl4965_init_channel_map(priv);
8988         if (err) {
8989                 IWL_ERROR("initializing regulatory failed: %d\n", err);
8990                 goto out_remove_sysfs;
8991         }
8992
8993         err = iwl4965_init_geos(priv);
8994         if (err) {
8995                 IWL_ERROR("initializing geos failed: %d\n", err);
8996                 goto out_free_channel_map;
8997         }
8998
8999         iwl4965_rate_control_register(priv->hw);
9000         err = ieee80211_register_hw(priv->hw);
9001         if (err) {
9002                 IWL_ERROR("Failed to register network device (error %d)\n", err);
9003                 goto out_free_geos;
9004         }
9005
9006         priv->hw->conf.beacon_int = 100;
9007         priv->mac80211_registered = 1;
9008         pci_save_state(pdev);
9009         pci_disable_device(pdev);
9010
9011         return 0;
9012
9013  out_free_geos:
9014         iwl4965_free_geos(priv);
9015  out_free_channel_map:
9016         iwl4965_free_channel_map(priv);
9017  out_remove_sysfs:
9018         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9019
9020  out_release_irq:
9021         destroy_workqueue(priv->workqueue);
9022         priv->workqueue = NULL;
9023         iwl4965_unset_hw_setting(priv);
9024
9025  out_iounmap:
9026         pci_iounmap(pdev, priv->hw_base);
9027  out_pci_release_regions:
9028         pci_release_regions(pdev);
9029  out_pci_disable_device:
9030         pci_disable_device(pdev);
9031         pci_set_drvdata(pdev, NULL);
9032  out_ieee80211_free_hw:
9033         ieee80211_free_hw(priv->hw);
9034  out:
9035         return err;
9036 }
9037
9038 static void iwl4965_pci_remove(struct pci_dev *pdev)
9039 {
9040         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9041         struct list_head *p, *q;
9042         int i;
9043
9044         if (!priv)
9045                 return;
9046
9047         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9048
9049         set_bit(STATUS_EXIT_PENDING, &priv->status);
9050
9051         iwl4965_down(priv);
9052
9053         /* Free MAC hash list for ADHOC */
9054         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9055                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9056                         list_del(p);
9057                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9058                 }
9059         }
9060
9061         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9062
9063         iwl4965_dealloc_ucode_pci(priv);
9064
9065         if (priv->rxq.bd)
9066                 iwl4965_rx_queue_free(priv, &priv->rxq);
9067         iwl4965_hw_txq_ctx_free(priv);
9068
9069         iwl4965_unset_hw_setting(priv);
9070         iwl4965_clear_stations_table(priv);
9071
9072         if (priv->mac80211_registered) {
9073                 ieee80211_unregister_hw(priv->hw);
9074                 iwl4965_rate_control_unregister(priv->hw);
9075         }
9076
9077         /*netif_stop_queue(dev); */
9078         flush_workqueue(priv->workqueue);
9079
9080         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9081          * priv->workqueue... so we can't take down the workqueue
9082          * until now... */
9083         destroy_workqueue(priv->workqueue);
9084         priv->workqueue = NULL;
9085
9086         pci_iounmap(pdev, priv->hw_base);
9087         pci_release_regions(pdev);
9088         pci_disable_device(pdev);
9089         pci_set_drvdata(pdev, NULL);
9090
9091         iwl4965_free_channel_map(priv);
9092         iwl4965_free_geos(priv);
9093
9094         if (priv->ibss_beacon)
9095                 dev_kfree_skb(priv->ibss_beacon);
9096
9097         ieee80211_free_hw(priv->hw);
9098 }
9099
9100 #ifdef CONFIG_PM
9101
9102 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9103 {
9104         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9105
9106         if (priv->is_open) {
9107                 set_bit(STATUS_IN_SUSPEND, &priv->status);
9108                 iwl4965_mac_stop(priv->hw);
9109                 priv->is_open = 1;
9110         }
9111
9112         pci_set_power_state(pdev, PCI_D3hot);
9113
9114         return 0;
9115 }
9116
9117 static int iwl4965_pci_resume(struct pci_dev *pdev)
9118 {
9119         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9120
9121         pci_set_power_state(pdev, PCI_D0);
9122
9123         if (priv->is_open)
9124                 iwl4965_mac_start(priv->hw);
9125
9126         clear_bit(STATUS_IN_SUSPEND, &priv->status);
9127         return 0;
9128 }
9129
9130 #endif /* CONFIG_PM */
9131
9132 /*****************************************************************************
9133  *
9134  * driver and module entry point
9135  *
9136  *****************************************************************************/
9137
9138 static struct pci_driver iwl4965_driver = {
9139         .name = DRV_NAME,
9140         .id_table = iwl4965_hw_card_ids,
9141         .probe = iwl4965_pci_probe,
9142         .remove = __devexit_p(iwl4965_pci_remove),
9143 #ifdef CONFIG_PM
9144         .suspend = iwl4965_pci_suspend,
9145         .resume = iwl4965_pci_resume,
9146 #endif
9147 };
9148
9149 static int __init iwl4965_init(void)
9150 {
9151
9152         int ret;
9153         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9154         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9155         ret = pci_register_driver(&iwl4965_driver);
9156         if (ret) {
9157                 IWL_ERROR("Unable to initialize PCI module\n");
9158                 return ret;
9159         }
9160 #ifdef CONFIG_IWL4965_DEBUG
9161         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9162         if (ret) {
9163                 IWL_ERROR("Unable to create driver sysfs file\n");
9164                 pci_unregister_driver(&iwl4965_driver);
9165                 return ret;
9166         }
9167 #endif
9168
9169         return ret;
9170 }
9171
9172 static void __exit iwl4965_exit(void)
9173 {
9174 #ifdef CONFIG_IWL4965_DEBUG
9175         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9176 #endif
9177         pci_unregister_driver(&iwl4965_driver);
9178 }
9179
9180 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9181 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9182 module_param_named(disable, iwl4965_param_disable, int, 0444);
9183 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9184 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9185 MODULE_PARM_DESC(hwcrypto,
9186                  "using hardware crypto engine (default 0 [software])\n");
9187 module_param_named(debug, iwl4965_param_debug, int, 0444);
9188 MODULE_PARM_DESC(debug, "debug output mask");
9189 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9190 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9191
9192 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9193 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9194
9195 /* QoS */
9196 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9197 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9198 module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
9199 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
9200
9201 module_exit(iwl4965_exit);
9202 module_init(iwl4965_init);