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 "1.2.26k" 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 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 165  * DMA services
 166  *
 167  * Theory of operation
 168  *
 169  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 170  * of buffer descriptors, each of which points to one or more data buffers for
 171  * the device to read from or fill.  Driver and device exchange status of each
 172  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 173  * entries in each circular buffer, to protect against confusing empty and full
 174  * queue states.
 175  *
 176  * The device reads or writes the data in the queues via the device's several
 177  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 178  *
 179  * For Tx queue, there are low mark and high mark limits. If, after queuing
 180  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 181  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 182  * Tx queue resumed.
 183  *
 184  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 185  * queue (#4) for sending commands to the device firmware, and 15 other
 186  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 187  *
 188  * See more detailed info in iwl-4965-hw.h.
 189  ***************************************************/
 190
 191 int iwl4965_queue_space(const struct iwl4965_queue *q)
 192 {
 193         int s = q->read_ptr - q->write_ptr;
 194
 195         if (q->read_ptr > q->write_ptr)
 196                 s -= q->n_bd;
 197
 198         if (s <= 0)
 199                 s += q->n_window;
 200         /* keep some reserve to not confuse empty and full situations */
 201         s -= 2;
 202         if (s < 0)
 203                 s = 0;
 204         return s;
 205 }
 206
 207 /**
 208  * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
 209  * @index -- current index
 210  * @n_bd -- total number of entries in queue (must be power of 2)
 211  */
 212 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
 213 {
 214         return ++index & (n_bd - 1);
 215 }
 216
 217 /**
 218  * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
 219  * @index -- current index
 220  * @n_bd -- total number of entries in queue (must be power of 2)
 221  */
 222 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
 223 {
 224         return --index & (n_bd - 1);
 225 }
 226
 227 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 228 {
 229         return q->write_ptr > q->read_ptr ?
 230                 (i >= q->read_ptr && i < q->write_ptr) :
 231                 !(i < q->read_ptr && i >= q->write_ptr);
 232 }
 233
 234 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 235 {
 236         /* This is for scan command, the big buffer at end of command array */
 237         if (is_huge)
 238                 return q->n_window;     /* must be power of 2 */
 239
 240         /* Otherwise, use normal size buffers */
 241         return index & (q->n_window - 1);
 242 }
 243
 244 /**
 245  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 246  */
 247 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
 248                           int count, int slots_num, u32 id)
 249 {
 250         q->n_bd = count;
 251         q->n_window = slots_num;
 252         q->id = id;
 253
 254         /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
 255          * and iwl4965_queue_dec_wrap are broken. */
 256         BUG_ON(!is_power_of_2(count));
 257
 258         /* slots_num must be power-of-two size, otherwise
 259          * get_cmd_index is broken. */
 260         BUG_ON(!is_power_of_2(slots_num));
 261
 262         q->low_mark = q->n_window / 4;
 263         if (q->low_mark < 4)
 264                 q->low_mark = 4;
 265
 266         q->high_mark = q->n_window / 8;
 267         if (q->high_mark < 2)
 268                 q->high_mark = 2;
 269
 270         q->write_ptr = q->read_ptr = 0;
 271
 272         return 0;
 273 }
 274
 275 /**
 276  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 277  */
 278 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
 279                               struct iwl4965_tx_queue *txq, u32 id)
 280 {
 281         struct pci_dev *dev = priv->pci_dev;
 282
 283         /* Driver private data, only for Tx (not command) queues,
 284          * not shared with device. */
 285         if (id != IWL_CMD_QUEUE_NUM) {
 286                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 287                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 288                 if (!txq->txb) {
 289                         IWL_ERROR("kmalloc for auxiliary BD "
 290                                   "structures failed\n");
 291                         goto error;
 292                 }
 293         } else
 294                 txq->txb = NULL;
 295
 296         /* Circular buffer of transmit frame descriptors (TFDs),
 297          * shared with device */
 298         txq->bd = pci_alloc_consistent(dev,
 299                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 300                         &txq->q.dma_addr);
 301
 302         if (!txq->bd) {
 303                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 304                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 305                 goto error;
 306         }
 307         txq->q.id = id;
 308
 309         return 0;
 310
 311  error:
 312         if (txq->txb) {
 313                 kfree(txq->txb);
 314                 txq->txb = NULL;
 315         }
 316
 317         return -ENOMEM;
 318 }
 319
 320 /**
 321  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 322  */
 323 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
 324                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 325 {
 326         struct pci_dev *dev = priv->pci_dev;
 327         int len;
 328         int rc = 0;
 329
 330         /*
 331          * Alloc buffer array for commands (Tx or other types of commands).
 332          * For the command queue (#4), allocate command space + one big
 333          * command for scan, since scan command is very huge; the system will
 334          * not have two scans at the same time, so only one is needed.
 335          * For normal Tx queues (all other queues), no super-size command
 336          * space is needed.
 337          */
 338         len = sizeof(struct iwl4965_cmd) * slots_num;
 339         if (txq_id == IWL_CMD_QUEUE_NUM)
 340                 len +=  IWL_MAX_SCAN_SIZE;
 341         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 342         if (!txq->cmd)
 343                 return -ENOMEM;
 344
 345         /* Alloc driver data array and TFD circular buffer */
 346         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 347         if (rc) {
 348                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 349
 350                 return -ENOMEM;
 351         }
 352         txq->need_update = 0;
 353
 354         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 355          * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
 356         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 357
 358         /* Initialize queue's high/low-water marks, and head/tail indexes */
 359         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 360
 361         /* Tell device where to find queue */
 362         iwl4965_hw_tx_queue_init(priv, txq);
 363
 364         return 0;
 365 }
 366
 367 /**
 368  * iwl4965_tx_queue_free - Deallocate DMA queue.
 369  * @txq: Transmit queue to deallocate.
 370  *
 371  * Empty queue by removing and destroying all BD's.
 372  * Free all buffers.
 373  * 0-fill, but do not free "txq" descriptor structure.
 374  */
 375 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
 376 {
 377         struct iwl4965_queue *q = &txq->q;
 378         struct pci_dev *dev = priv->pci_dev;
 379         int len;
 380
 381         if (q->n_bd == 0)
 382                 return;
 383
 384         /* first, empty all BD's */
 385         for (; q->write_ptr != q->read_ptr;
 386              q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
 387                 iwl4965_hw_txq_free_tfd(priv, txq);
 388
 389         len = sizeof(struct iwl4965_cmd) * q->n_window;
 390         if (q->id == IWL_CMD_QUEUE_NUM)
 391                 len += IWL_MAX_SCAN_SIZE;
 392
 393         /* De-alloc array of command/tx buffers */
 394         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 395
 396         /* De-alloc circular buffer of TFDs */
 397         if (txq->q.n_bd)
 398                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 399                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 400
 401         /* De-alloc array of per-TFD driver data */
 402         if (txq->txb) {
 403                 kfree(txq->txb);
 404                 txq->txb = NULL;
 405         }
 406
 407         /* 0-fill queue descriptor structure */
 408         memset(txq, 0, sizeof(*txq));
 409 }
 410
 411 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 412
 413 /*************** STATION TABLE MANAGEMENT ****
 414  * mac80211 should be examined to determine if sta_info is duplicating
 415  * the functionality provided here
 416  */
 417
 418 /**************************************************************/
 419
 420 #if 0 /* temporary disable till we add real remove station */
 421 /**
 422  * iwl4965_remove_station - Remove driver's knowledge of station.
 423  *
 424  * NOTE:  This does not remove station from device's station table.
 425  */
 426 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
 427 {
 428         int index = IWL_INVALID_STATION;
 429         int i;
 430         unsigned long flags;
 431
 432         spin_lock_irqsave(&priv->sta_lock, flags);
 433
 434         if (is_ap)
 435                 index = IWL_AP_ID;
 436         else if (is_broadcast_ether_addr(addr))
 437                 index = priv->hw_setting.bcast_sta_id;
 438         else
 439                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 440                         if (priv->stations[i].used &&
 441                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 442                                                 addr)) {
 443                                 index = i;
 444                                 break;
 445                         }
 446
 447         if (unlikely(index == IWL_INVALID_STATION))
 448                 goto out;
 449
 450         if (priv->stations[index].used) {
 451                 priv->stations[index].used = 0;
 452                 priv->num_stations--;
 453         }
 454
 455         BUG_ON(priv->num_stations < 0);
 456
 457 out:
 458         spin_unlock_irqrestore(&priv->sta_lock, flags);
 459         return 0;
 460 }
 461 #endif
 462
 463 /**
 464  * iwl4965_clear_stations_table - Clear the driver's station table
 465  *
 466  * NOTE:  This does not clear or otherwise alter the device's station table.
 467  */
 468 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
 469 {
 470         unsigned long flags;
 471
 472         spin_lock_irqsave(&priv->sta_lock, flags);
 473
 474         priv->num_stations = 0;
 475         memset(priv->stations, 0, sizeof(priv->stations));
 476
 477         spin_unlock_irqrestore(&priv->sta_lock, flags);
 478 }
 479
 480 /**
 481  * iwl4965_add_station_flags - Add station to tables in driver and device
 482  */
 483 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
 484                                 int is_ap, u8 flags, void *ht_data)
 485 {
 486         int i;
 487         int index = IWL_INVALID_STATION;
 488         struct iwl4965_station_entry *station;
 489         unsigned long flags_spin;
 490         DECLARE_MAC_BUF(mac);
 491
 492         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 493         if (is_ap)
 494                 index = IWL_AP_ID;
 495         else if (is_broadcast_ether_addr(addr))
 496                 index = priv->hw_setting.bcast_sta_id;
 497         else
 498                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 499                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 500                                                 addr)) {
 501                                 index = i;
 502                                 break;
 503                         }
 504
 505                         if (!priv->stations[i].used &&
 506                             index == IWL_INVALID_STATION)
 507                                 index = i;
 508                 }
 509
 510
 511         /* These two conditions have the same outcome, but keep them separate
 512           since they have different meanings */
 513         if (unlikely(index == IWL_INVALID_STATION)) {
 514                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 515                 return index;
 516         }
 517
 518         if (priv->stations[index].used &&
 519             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 520                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 521                 return index;
 522         }
 523
 524
 525         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 526         station = &priv->stations[index];
 527         station->used = 1;
 528         priv->num_stations++;
 529
 530         /* Set up the REPLY_ADD_STA command to send to device */
 531         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 532         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 533         station->sta.mode = 0;
 534         station->sta.sta.sta_id = index;
 535         station->sta.station_flags = 0;
 536
 537 #ifdef CONFIG_IWL4965_HT
 538         /* BCAST station and IBSS stations do not work in HT mode */
 539         if (index != priv->hw_setting.bcast_sta_id &&
 540             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 541                 iwl4965_set_ht_add_station(priv, index,
 542                                  (struct ieee80211_ht_info *) ht_data);
 543 #endif /*CONFIG_IWL4965_HT*/
 544
 545         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 546
 547         /* Add station to device's station table */
 548         iwl4965_send_add_station(priv, &station->sta, flags);
 549         return index;
 550
 551 }
 552
 553 /*************** DRIVER STATUS FUNCTIONS   *****/
 554
 555 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
 556 {
 557         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 558          * set but EXIT_PENDING is not */
 559         return test_bit(STATUS_READY, &priv->status) &&
 560                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 561                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 562 }
 563
 564 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
 565 {
 566         return test_bit(STATUS_ALIVE, &priv->status);
 567 }
 568
 569 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
 570 {
 571         return test_bit(STATUS_INIT, &priv->status);
 572 }
 573
 574 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
 575 {
 576         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 577                test_bit(STATUS_RF_KILL_SW, &priv->status);
 578 }
 579
 580 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
 581 {
 582
 583         if (iwl4965_is_rfkill(priv))
 584                 return 0;
 585
 586         return iwl4965_is_ready(priv);
 587 }
 588
 589 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 590
 591 #define IWL_CMD(x) case x : return #x
 592
 593 static const char *get_cmd_string(u8 cmd)
 594 {
 595         switch (cmd) {
 596                 IWL_CMD(REPLY_ALIVE);
 597                 IWL_CMD(REPLY_ERROR);
 598                 IWL_CMD(REPLY_RXON);
 599                 IWL_CMD(REPLY_RXON_ASSOC);
 600                 IWL_CMD(REPLY_QOS_PARAM);
 601                 IWL_CMD(REPLY_RXON_TIMING);
 602                 IWL_CMD(REPLY_ADD_STA);
 603                 IWL_CMD(REPLY_REMOVE_STA);
 604                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 605                 IWL_CMD(REPLY_TX);
 606                 IWL_CMD(REPLY_RATE_SCALE);
 607                 IWL_CMD(REPLY_LEDS_CMD);
 608                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 609                 IWL_CMD(RADAR_NOTIFICATION);
 610                 IWL_CMD(REPLY_QUIET_CMD);
 611                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 612                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 613                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 614                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 615                 IWL_CMD(POWER_TABLE_CMD);
 616                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 617                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 618                 IWL_CMD(REPLY_SCAN_CMD);
 619                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 620                 IWL_CMD(SCAN_START_NOTIFICATION);
 621                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 622                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 623                 IWL_CMD(BEACON_NOTIFICATION);
 624                 IWL_CMD(REPLY_TX_BEACON);
 625                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 626                 IWL_CMD(QUIET_NOTIFICATION);
 627                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 628                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 629                 IWL_CMD(REPLY_BT_CONFIG);
 630                 IWL_CMD(REPLY_STATISTICS_CMD);
 631                 IWL_CMD(STATISTICS_NOTIFICATION);
 632                 IWL_CMD(REPLY_CARD_STATE_CMD);
 633                 IWL_CMD(CARD_STATE_NOTIFICATION);
 634                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 635                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
 636                 IWL_CMD(SENSITIVITY_CMD);
 637                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
 638                 IWL_CMD(REPLY_RX_PHY_CMD);
 639                 IWL_CMD(REPLY_RX_MPDU_CMD);
 640                 IWL_CMD(REPLY_4965_RX);
 641                 IWL_CMD(REPLY_COMPRESSED_BA);
 642         default:
 643                 return "UNKNOWN";
 644
 645         }
 646 }
 647
 648 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 649
 650 /**
 651  * iwl4965_enqueue_hcmd - enqueue a uCode command
 652  * @priv: device private data point
 653  * @cmd: a point to the ucode command structure
 654  *
 655  * The function returns < 0 values to indicate the operation is
 656  * failed. On success, it turns the index (> 0) of command in the
 657  * command queue.
 658  */
 659 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 660 {
 661         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 662         struct iwl4965_queue *q = &txq->q;
 663         struct iwl4965_tfd_frame *tfd;
 664         u32 *control_flags;
 665         struct iwl4965_cmd *out_cmd;
 666         u32 idx;
 667         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 668         dma_addr_t phys_addr;
 669         int ret;
 670         unsigned long flags;
 671
 672         /* If any of the command structures end up being larger than
 673          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 674          * we will need to increase the size of the TFD entries */
 675         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 676                !(cmd->meta.flags & CMD_SIZE_HUGE));
 677
 678         if (iwl4965_is_rfkill(priv)) {
 679                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 680                 return -EIO;
 681         }
 682
 683         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 684                 IWL_ERROR("No space for Tx\n");
 685                 return -ENOSPC;
 686         }
 687
 688         spin_lock_irqsave(&priv->hcmd_lock, flags);
 689
 690         tfd = &txq->bd[q->write_ptr];
 691         memset(tfd, 0, sizeof(*tfd));
 692
 693         control_flags = (u32 *) tfd;
 694
 695         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 696         out_cmd = &txq->cmd[idx];
 697
 698         out_cmd->hdr.cmd = cmd->id;
 699         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 700         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 701
 702         /* At this point, the out_cmd now has all of the incoming cmd
 703          * information */
 704
 705         out_cmd->hdr.flags = 0;
 706         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 707                         INDEX_TO_SEQ(q->write_ptr));
 708         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 709                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 710
 711         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 712                         offsetof(struct iwl4965_cmd, hdr);
 713         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 714
 715         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 716                      "%d bytes at %d[%d]:%d\n",
 717                      get_cmd_string(out_cmd->hdr.cmd),
 718                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 719                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 720
 721         txq->need_update = 1;
 722
 723         /* Set up entry in queue's byte count circular buffer */
 724         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 725
 726         /* Increment and update queue's write index */
 727         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
 728         iwl4965_tx_queue_update_write_ptr(priv, txq);
 729
 730         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 731         return ret ? ret : idx;
 732 }
 733
 734 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 735 {
 736         int ret;
 737
 738         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 739
 740         /* An asynchronous command can not expect an SKB to be set. */
 741         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 742
 743         /* An asynchronous command MUST have a callback. */
 744         BUG_ON(!cmd->meta.u.callback);
 745
 746         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 747                 return -EBUSY;
 748
 749         ret = iwl4965_enqueue_hcmd(priv, cmd);
 750         if (ret < 0) {
 751                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 752                           get_cmd_string(cmd->id), ret);
 753                 return ret;
 754         }
 755         return 0;
 756 }
 757
 758 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 759 {
 760         int cmd_idx;
 761         int ret;
 762         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 763
 764         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 765
 766          /* A synchronous command can not have a callback set. */
 767         BUG_ON(cmd->meta.u.callback != NULL);
 768
 769         if (atomic_xchg(&entry, 1)) {
 770                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 771                           get_cmd_string(cmd->id));
 772                 return -EBUSY;
 773         }
 774
 775         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 776
 777         if (cmd->meta.flags & CMD_WANT_SKB)
 778                 cmd->meta.source = &cmd->meta;
 779
 780         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
 781         if (cmd_idx < 0) {
 782                 ret = cmd_idx;
 783                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 784                           get_cmd_string(cmd->id), ret);
 785                 goto out;
 786         }
 787
 788         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 789                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 790                         HOST_COMPLETE_TIMEOUT);
 791         if (!ret) {
 792                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 793                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 794                                   get_cmd_string(cmd->id),
 795                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 796
 797                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 798                         ret = -ETIMEDOUT;
 799                         goto cancel;
 800                 }
 801         }
 802
 803         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 804                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 805                                get_cmd_string(cmd->id));
 806                 ret = -ECANCELED;
 807                 goto fail;
 808         }
 809         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 810                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 811                                get_cmd_string(cmd->id));
 812                 ret = -EIO;
 813                 goto fail;
 814         }
 815         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 816                 IWL_ERROR("Error: Response NULL in '%s'\n",
 817                           get_cmd_string(cmd->id));
 818                 ret = -EIO;
 819                 goto out;
 820         }
 821
 822         ret = 0;
 823         goto out;
 824
 825 cancel:
 826         if (cmd->meta.flags & CMD_WANT_SKB) {
 827                 struct iwl4965_cmd *qcmd;
 828
 829                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 830                  * TX cmd queue. Otherwise in case the cmd comes
 831                  * in later, it will possibly set an invalid
 832                  * address (cmd->meta.source). */
 833                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 834                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 835         }
 836 fail:
 837         if (cmd->meta.u.skb) {
 838                 dev_kfree_skb_any(cmd->meta.u.skb);
 839                 cmd->meta.u.skb = NULL;
 840         }
 841 out:
 842         atomic_set(&entry, 0);
 843         return ret;
 844 }
 845
 846 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 847 {
 848         if (cmd->meta.flags & CMD_ASYNC)
 849                 return iwl4965_send_cmd_async(priv, cmd);
 850
 851         return iwl4965_send_cmd_sync(priv, cmd);
 852 }
 853
 854 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
 855 {
 856         struct iwl4965_host_cmd cmd = {
 857                 .id = id,
 858                 .len = len,
 859                 .data = data,
 860         };
 861
 862         return iwl4965_send_cmd_sync(priv, &cmd);
 863 }
 864
 865 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
 866 {
 867         struct iwl4965_host_cmd cmd = {
 868                 .id = id,
 869                 .len = sizeof(val),
 870                 .data = &val,
 871         };
 872
 873         return iwl4965_send_cmd_sync(priv, &cmd);
 874 }
 875
 876 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
 877 {
 878         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 879 }
 880
 881 /**
 882  * iwl4965_rxon_add_station - add station into station table.
 883  *
 884  * there is only one AP station with id= IWL_AP_ID
 885  * NOTE: mutex must be held before calling this fnction
 886  */
 887 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
 888                                 const u8 *addr, int is_ap)
 889 {
 890         u8 sta_id;
 891
 892         /* Add station to device's station table */
 893 #ifdef CONFIG_IWL4965_HT
 894         struct ieee80211_conf *conf = &priv->hw->conf;
 895         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 896
 897         if ((is_ap) &&
 898             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 899             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 900                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 901                                                    0, cur_ht_config);
 902         else
 903 #endif /* CONFIG_IWL4965_HT */
 904                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 905                                                    0, NULL);
 906
 907         /* Set up default rate scaling table in device's station table */
 908         iwl4965_add_station(priv, addr, is_ap);
 909
 910         return sta_id;
 911 }
 912
 913 /**
 914  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
 915  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 916  * @channel: Any channel valid for the requested phymode
 917
 918  * In addition to setting the staging RXON, priv->phymode is also set.
 919  *
 920  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 921  * in the staging RXON flag structure based on the phymode
 922  */
 923 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv,
 924                                     enum ieee80211_band band,
 925                                  u16 channel)
 926 {
 927         if (!iwl4965_get_channel_info(priv, band, channel)) {
 928                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 929                                channel, band);
 930                 return -EINVAL;
 931         }
 932
 933         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 934             (priv->band == band))
 935                 return 0;
 936
 937         priv->staging_rxon.channel = cpu_to_le16(channel);
 938         if (band == IEEE80211_BAND_5GHZ)
 939                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 940         else
 941                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 942
 943         priv->band = band;
 944
 945         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 946
 947         return 0;
 948 }
 949
 950 /**
 951  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 952  *
 953  * NOTE:  This is really only useful during development and can eventually
 954  * be #ifdef'd out once the driver is stable and folks aren't actively
 955  * making changes
 956  */
 957 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 958 {
 959         int error = 0;
 960         int counter = 1;
 961
 962         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 963                 error |= le32_to_cpu(rxon->flags &
 964                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 965                                  RXON_FLG_RADAR_DETECT_MSK));
 966                 if (error)
 967                         IWL_WARNING("check 24G fields %d | %d\n",
 968                                     counter++, error);
 969         } else {
 970                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 971                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 972                 if (error)
 973                         IWL_WARNING("check 52 fields %d | %d\n",
 974                                     counter++, error);
 975                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 976                 if (error)
 977                         IWL_WARNING("check 52 CCK %d | %d\n",
 978                                     counter++, error);
 979         }
 980         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 981         if (error)
 982                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 983
 984         /* make sure basic rates 6Mbps and 1Mbps are supported */
 985         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 986                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 987         if (error)
 988                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 989
 990         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 991         if (error)
 992                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 993
 994         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 995                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 996         if (error)
 997                 IWL_WARNING("check CCK and short slot %d | %d\n",
 998                             counter++, error);
 999
1000         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
1001                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1002         if (error)
1003                 IWL_WARNING("check CCK & auto detect %d | %d\n",
1004                             counter++, error);
1005
1006         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1007                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1008         if (error)
1009                 IWL_WARNING("check TGG and auto detect %d | %d\n",
1010                             counter++, error);
1011
1012         if (error)
1013                 IWL_WARNING("Tuning to channel %d\n",
1014                             le16_to_cpu(rxon->channel));
1015
1016         if (error) {
1017                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1018                 return -1;
1019         }
1020         return 0;
1021 }
1022
1023 /**
1024  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1025  * @priv: staging_rxon is compared to active_rxon
1026  *
1027  * If the RXON structure is changing enough to require a new tune,
1028  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1029  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1030  */
1031 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1032 {
1033
1034         /* These items are only settable from the full RXON command */
1035         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1036             compare_ether_addr(priv->staging_rxon.bssid_addr,
1037                                priv->active_rxon.bssid_addr) ||
1038             compare_ether_addr(priv->staging_rxon.node_addr,
1039                                priv->active_rxon.node_addr) ||
1040             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1041                                priv->active_rxon.wlap_bssid_addr) ||
1042             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1043             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1044             (priv->staging_rxon.air_propagation !=
1045              priv->active_rxon.air_propagation) ||
1046             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1047              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1048             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1049              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1050             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1051             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1052                 return 1;
1053
1054         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1055          * be updated with the RXON_ASSOC command -- however only some
1056          * flag transitions are allowed using RXON_ASSOC */
1057
1058         /* Check if we are not switching bands */
1059         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1060             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1061                 return 1;
1062
1063         /* Check if we are switching association toggle */
1064         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1065                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1066                 return 1;
1067
1068         return 0;
1069 }
1070
1071 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1072 {
1073         int rc = 0;
1074         struct iwl4965_rx_packet *res = NULL;
1075         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1076         struct iwl4965_host_cmd cmd = {
1077                 .id = REPLY_RXON_ASSOC,
1078                 .len = sizeof(rxon_assoc),
1079                 .meta.flags = CMD_WANT_SKB,
1080                 .data = &rxon_assoc,
1081         };
1082         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1083         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1084
1085         if ((rxon1->flags == rxon2->flags) &&
1086             (rxon1->filter_flags == rxon2->filter_flags) &&
1087             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1088             (rxon1->ofdm_ht_single_stream_basic_rates ==
1089              rxon2->ofdm_ht_single_stream_basic_rates) &&
1090             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1091              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1092             (rxon1->rx_chain == rxon2->rx_chain) &&
1093             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1094                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1095                 return 0;
1096         }
1097
1098         rxon_assoc.flags = priv->staging_rxon.flags;
1099         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1100         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1101         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1102         rxon_assoc.reserved = 0;
1103         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1104             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1105         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1106             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1107         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1108
1109         rc = iwl4965_send_cmd_sync(priv, &cmd);
1110         if (rc)
1111                 return rc;
1112
1113         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1114         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1115                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1116                 rc = -EIO;
1117         }
1118
1119         priv->alloc_rxb_skb--;
1120         dev_kfree_skb_any(cmd.meta.u.skb);
1121
1122         return rc;
1123 }
1124
1125 /**
1126  * iwl4965_commit_rxon - commit staging_rxon to hardware
1127  *
1128  * The RXON command in staging_rxon is committed to the hardware and
1129  * the active_rxon structure is updated with the new data.  This
1130  * function correctly transitions out of the RXON_ASSOC_MSK state if
1131  * a HW tune is required based on the RXON structure changes.
1132  */
1133 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1134 {
1135         /* cast away the const for active_rxon in this function */
1136         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1137         DECLARE_MAC_BUF(mac);
1138         int rc = 0;
1139
1140         if (!iwl4965_is_alive(priv))
1141                 return -1;
1142
1143         /* always get timestamp with Rx frame */
1144         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1145
1146         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1147         if (rc) {
1148                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1149                 return -EINVAL;
1150         }
1151
1152         /* If we don't need to send a full RXON, we can use
1153          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1154          * and other flags for the current radio configuration. */
1155         if (!iwl4965_full_rxon_required(priv)) {
1156                 rc = iwl4965_send_rxon_assoc(priv);
1157                 if (rc) {
1158                         IWL_ERROR("Error setting RXON_ASSOC "
1159                                   "configuration (%d).\n", rc);
1160                         return rc;
1161                 }
1162
1163                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1164
1165                 return 0;
1166         }
1167
1168         /* station table will be cleared */
1169         priv->assoc_station_added = 0;
1170
1171 #ifdef CONFIG_IWL4965_SENSITIVITY
1172         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1173         if (!priv->error_recovering)
1174                 priv->start_calib = 0;
1175
1176         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1177 #endif /* CONFIG_IWL4965_SENSITIVITY */
1178
1179         /* If we are currently associated and the new config requires
1180          * an RXON_ASSOC and the new config wants the associated mask enabled,
1181          * we must clear the associated from the active configuration
1182          * before we apply the new config */
1183         if (iwl4965_is_associated(priv) &&
1184             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1185                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1186                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1187
1188                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1189                                       sizeof(struct iwl4965_rxon_cmd),
1190                                       &priv->active_rxon);
1191
1192                 /* If the mask clearing failed then we set
1193                  * active_rxon back to what it was previously */
1194                 if (rc) {
1195                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1196                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1197                                   "configuration (%d).\n", rc);
1198                         return rc;
1199                 }
1200         }
1201
1202         IWL_DEBUG_INFO("Sending RXON\n"
1203                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1204                        "* channel = %d\n"
1205                        "* bssid = %s\n",
1206                        ((priv->staging_rxon.filter_flags &
1207                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1208                        le16_to_cpu(priv->staging_rxon.channel),
1209                        print_mac(mac, priv->staging_rxon.bssid_addr));
1210
1211         /* Apply the new configuration */
1212         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1213                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1214         if (rc) {
1215                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1216                 return rc;
1217         }
1218
1219         iwl4965_clear_stations_table(priv);
1220
1221 #ifdef CONFIG_IWL4965_SENSITIVITY
1222         if (!priv->error_recovering)
1223                 priv->start_calib = 0;
1224
1225         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1226         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1227 #endif /* CONFIG_IWL4965_SENSITIVITY */
1228
1229         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1230
1231         /* If we issue a new RXON command which required a tune then we must
1232          * send a new TXPOWER command or we won't be able to Tx any frames */
1233         rc = iwl4965_hw_reg_send_txpower(priv);
1234         if (rc) {
1235                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1236                 return rc;
1237         }
1238
1239         /* Add the broadcast address so we can send broadcast frames */
1240         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1241             IWL_INVALID_STATION) {
1242                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1243                 return -EIO;
1244         }
1245
1246         /* If we have set the ASSOC_MSK and we are in BSS mode then
1247          * add the IWL_AP_ID to the station rate table */
1248         if (iwl4965_is_associated(priv) &&
1249             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1250                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1251                     == IWL_INVALID_STATION) {
1252                         IWL_ERROR("Error adding AP address for transmit.\n");
1253                         return -EIO;
1254                 }
1255                 priv->assoc_station_added = 1;
1256         }
1257
1258         return 0;
1259 }
1260
1261 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1262 {
1263         struct iwl4965_bt_cmd bt_cmd = {
1264                 .flags = 3,
1265                 .lead_time = 0xAA,
1266                 .max_kill = 1,
1267                 .kill_ack_mask = 0,
1268                 .kill_cts_mask = 0,
1269         };
1270
1271         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1272                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1273 }
1274
1275 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1276 {
1277         int rc = 0;
1278         struct iwl4965_rx_packet *res;
1279         struct iwl4965_host_cmd cmd = {
1280                 .id = REPLY_SCAN_ABORT_CMD,
1281                 .meta.flags = CMD_WANT_SKB,
1282         };
1283
1284         /* If there isn't a scan actively going on in the hardware
1285          * then we are in between scan bands and not actually
1286          * actively scanning, so don't send the abort command */
1287         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1288                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1289                 return 0;
1290         }
1291
1292         rc = iwl4965_send_cmd_sync(priv, &cmd);
1293         if (rc) {
1294                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1295                 return rc;
1296         }
1297
1298         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1299         if (res->u.status != CAN_ABORT_STATUS) {
1300                 /* The scan abort will return 1 for success or
1301                  * 2 for "failure".  A failure condition can be
1302                  * due to simply not being in an active scan which
1303                  * can occur if we send the scan abort before we
1304                  * the microcode has notified us that a scan is
1305                  * completed. */
1306                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1307                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1308                 clear_bit(STATUS_SCAN_HW, &priv->status);
1309         }
1310
1311         dev_kfree_skb_any(cmd.meta.u.skb);
1312
1313         return rc;
1314 }
1315
1316 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1317                                         struct iwl4965_cmd *cmd,
1318                                         struct sk_buff *skb)
1319 {
1320         return 1;
1321 }
1322
1323 /*
1324  * CARD_STATE_CMD
1325  *
1326  * Use: Sets the device's internal card state to enable, disable, or halt
1327  *
1328  * When in the 'enable' state the card operates as normal.
1329  * When in the 'disable' state, the card enters into a low power mode.
1330  * When in the 'halt' state, the card is shut down and must be fully
1331  * restarted to come back on.
1332  */
1333 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1334 {
1335         struct iwl4965_host_cmd cmd = {
1336                 .id = REPLY_CARD_STATE_CMD,
1337                 .len = sizeof(u32),
1338                 .data = &flags,
1339                 .meta.flags = meta_flag,
1340         };
1341
1342         if (meta_flag & CMD_ASYNC)
1343                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1344
1345         return iwl4965_send_cmd(priv, &cmd);
1346 }
1347
1348 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1349                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1350 {
1351         struct iwl4965_rx_packet *res = NULL;
1352
1353         if (!skb) {
1354                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1355                 return 1;
1356         }
1357
1358         res = (struct iwl4965_rx_packet *)skb->data;
1359         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1360                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1361                           res->hdr.flags);
1362                 return 1;
1363         }
1364
1365         switch (res->u.add_sta.status) {
1366         case ADD_STA_SUCCESS_MSK:
1367                 break;
1368         default:
1369                 break;
1370         }
1371
1372         /* We didn't cache the SKB; let the caller free it */
1373         return 1;
1374 }
1375
1376 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1377                          struct iwl4965_addsta_cmd *sta, u8 flags)
1378 {
1379         struct iwl4965_rx_packet *res = NULL;
1380         int rc = 0;
1381         struct iwl4965_host_cmd cmd = {
1382                 .id = REPLY_ADD_STA,
1383                 .len = sizeof(struct iwl4965_addsta_cmd),
1384                 .meta.flags = flags,
1385                 .data = sta,
1386         };
1387
1388         if (flags & CMD_ASYNC)
1389                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1390         else
1391                 cmd.meta.flags |= CMD_WANT_SKB;
1392
1393         rc = iwl4965_send_cmd(priv, &cmd);
1394
1395         if (rc || (flags & CMD_ASYNC))
1396                 return rc;
1397
1398         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1399         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1400                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1401                           res->hdr.flags);
1402                 rc = -EIO;
1403         }
1404
1405         if (rc == 0) {
1406                 switch (res->u.add_sta.status) {
1407                 case ADD_STA_SUCCESS_MSK:
1408                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1409                         break;
1410                 default:
1411                         rc = -EIO;
1412                         IWL_WARNING("REPLY_ADD_STA failed\n");
1413                         break;
1414                 }
1415         }
1416
1417         priv->alloc_rxb_skb--;
1418         dev_kfree_skb_any(cmd.meta.u.skb);
1419
1420         return rc;
1421 }
1422
1423 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1424                                    struct ieee80211_key_conf *keyconf,
1425                                    u8 sta_id)
1426 {
1427         unsigned long flags;
1428         __le16 key_flags = 0;
1429
1430         switch (keyconf->alg) {
1431         case ALG_CCMP:
1432                 key_flags |= STA_KEY_FLG_CCMP;
1433                 key_flags |= cpu_to_le16(
1434                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1435                 key_flags &= ~STA_KEY_FLG_INVALID;
1436                 break;
1437         case ALG_TKIP:
1438         case ALG_WEP:
1439         default:
1440                 return -EINVAL;
1441         }
1442         spin_lock_irqsave(&priv->sta_lock, flags);
1443         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1444         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1445         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1446                keyconf->keylen);
1447
1448         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1449                keyconf->keylen);
1450         priv->stations[sta_id].sta.key.key_flags = key_flags;
1451         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1452         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1453
1454         spin_unlock_irqrestore(&priv->sta_lock, flags);
1455
1456         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1457         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1458         return 0;
1459 }
1460
1461 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1462 {
1463         unsigned long flags;
1464
1465         spin_lock_irqsave(&priv->sta_lock, flags);
1466         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1467         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1468         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1469         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1470         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1471         spin_unlock_irqrestore(&priv->sta_lock, flags);
1472
1473         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1474         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1475         return 0;
1476 }
1477
1478 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1479 {
1480         struct list_head *element;
1481
1482         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1483                        priv->frames_count);
1484
1485         while (!list_empty(&priv->free_frames)) {
1486                 element = priv->free_frames.next;
1487                 list_del(element);
1488                 kfree(list_entry(element, struct iwl4965_frame, list));
1489                 priv->frames_count--;
1490         }
1491
1492         if (priv->frames_count) {
1493                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1494                             priv->frames_count);
1495                 priv->frames_count = 0;
1496         }
1497 }
1498
1499 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1500 {
1501         struct iwl4965_frame *frame;
1502         struct list_head *element;
1503         if (list_empty(&priv->free_frames)) {
1504                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1505                 if (!frame) {
1506                         IWL_ERROR("Could not allocate frame!\n");
1507                         return NULL;
1508                 }
1509
1510                 priv->frames_count++;
1511                 return frame;
1512         }
1513
1514         element = priv->free_frames.next;
1515         list_del(element);
1516         return list_entry(element, struct iwl4965_frame, list);
1517 }
1518
1519 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1520 {
1521         memset(frame, 0, sizeof(*frame));
1522         list_add(&frame->list, &priv->free_frames);
1523 }
1524
1525 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1526                                 struct ieee80211_hdr *hdr,
1527                                 const u8 *dest, int left)
1528 {
1529
1530         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1531             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1532              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1533                 return 0;
1534
1535         if (priv->ibss_beacon->len > left)
1536                 return 0;
1537
1538         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1539
1540         return priv->ibss_beacon->len;
1541 }
1542
1543 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1544 {
1545         u8 i;
1546
1547         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1548              i = iwl4965_rates[i].next_ieee) {
1549                 if (rate_mask & (1 << i))
1550                         return iwl4965_rates[i].plcp;
1551         }
1552
1553         return IWL_RATE_INVALID;
1554 }
1555
1556 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1557 {
1558         struct iwl4965_frame *frame;
1559         unsigned int frame_size;
1560         int rc;
1561         u8 rate;
1562
1563         frame = iwl4965_get_free_frame(priv);
1564
1565         if (!frame) {
1566                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1567                           "command.\n");
1568                 return -ENOMEM;
1569         }
1570
1571         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1572                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1573                                                 0xFF0);
1574                 if (rate == IWL_INVALID_RATE)
1575                         rate = IWL_RATE_6M_PLCP;
1576         } else {
1577                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1578                 if (rate == IWL_INVALID_RATE)
1579                         rate = IWL_RATE_1M_PLCP;
1580         }
1581
1582         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1583
1584         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1585                               &frame->u.cmd[0]);
1586
1587         iwl4965_free_frame(priv, frame);
1588
1589         return rc;
1590 }
1591
1592 /******************************************************************************
1593  *
1594  * EEPROM related functions
1595  *
1596  ******************************************************************************/
1597
1598 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1599 {
1600         memcpy(mac, priv->eeprom.mac_address, 6);
1601 }
1602
1603 static inline void iwl4965_eeprom_release_semaphore(struct iwl4965_priv *priv)
1604 {
1605         iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1606                 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
1607 }
1608
1609 /**
1610  * iwl4965_eeprom_init - read EEPROM contents
1611  *
1612  * Load the EEPROM contents from adapter into priv->eeprom
1613  *
1614  * NOTE:  This routine uses the non-debug IO access functions.
1615  */
1616 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1617 {
1618         u16 *e = (u16 *)&priv->eeprom;
1619         u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1620         u32 r;
1621         int sz = sizeof(priv->eeprom);
1622         int rc;
1623         int i;
1624         u16 addr;
1625
1626         /* The EEPROM structure has several padding buffers within it
1627          * and when adding new EEPROM maps is subject to programmer errors
1628          * which may be very difficult to identify without explicitly
1629          * checking the resulting size of the eeprom map. */
1630         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1631
1632         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1633                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1634                 return -ENOENT;
1635         }
1636
1637         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1638         rc = iwl4965_eeprom_acquire_semaphore(priv);
1639         if (rc < 0) {
1640                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1641                 return -ENOENT;
1642         }
1643
1644         /* eeprom is an array of 16bit values */
1645         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1646                 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1647                 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1648
1649                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1650                                         i += IWL_EEPROM_ACCESS_DELAY) {
1651                         r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1652                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1653                                 break;
1654                         udelay(IWL_EEPROM_ACCESS_DELAY);
1655                 }
1656
1657                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1658                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1659                         rc = -ETIMEDOUT;
1660                         goto done;
1661                 }
1662                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1663         }
1664         rc = 0;
1665
1666 done:
1667         iwl4965_eeprom_release_semaphore(priv);
1668         return rc;
1669 }
1670
1671 /******************************************************************************
1672  *
1673  * Misc. internal state and helper functions
1674  *
1675  ******************************************************************************/
1676
1677 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1678 {
1679         if (priv->hw_setting.shared_virt)
1680                 pci_free_consistent(priv->pci_dev,
1681                                     sizeof(struct iwl4965_shared),
1682                                     priv->hw_setting.shared_virt,
1683                                     priv->hw_setting.shared_phys);
1684 }
1685
1686 /**
1687  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1688  *
1689  * return : set the bit for each supported rate insert in ie
1690  */
1691 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1692                                     u16 basic_rate, int *left)
1693 {
1694         u16 ret_rates = 0, bit;
1695         int i;
1696         u8 *cnt = ie;
1697         u8 *rates = ie + 1;
1698
1699         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1700                 if (bit & supported_rate) {
1701                         ret_rates |= bit;
1702                         rates[*cnt] = iwl4965_rates[i].ieee |
1703                                 ((bit & basic_rate) ? 0x80 : 0x00);
1704                         (*cnt)++;
1705                         (*left)--;
1706                         if ((*left <= 0) ||
1707                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1708                                 break;
1709                 }
1710         }
1711
1712         return ret_rates;
1713 }
1714
1715 /**
1716  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1717  */
1718 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1719                                   enum ieee80211_band band,
1720                                   struct ieee80211_mgmt *frame,
1721                                   int left, int is_direct)
1722 {
1723         int len = 0;
1724         u8 *pos = NULL;
1725         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1726 #ifdef CONFIG_IWL4965_HT
1727         const struct ieee80211_supported_band *sband =
1728                                                 iwl4965_get_hw_mode(priv, band);
1729 #endif /* CONFIG_IWL4965_HT */
1730
1731         /* Make sure there is enough space for the probe request,
1732          * two mandatory IEs and the data */
1733         left -= 24;
1734         if (left < 0)
1735                 return 0;
1736         len += 24;
1737
1738         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1739         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1740         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1741         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1742         frame->seq_ctrl = 0;
1743
1744         /* fill in our indirect SSID IE */
1745         /* ...next IE... */
1746
1747         left -= 2;
1748         if (left < 0)
1749                 return 0;
1750         len += 2;
1751         pos = &(frame->u.probe_req.variable[0]);
1752         *pos++ = WLAN_EID_SSID;
1753         *pos++ = 0;
1754
1755         /* fill in our direct SSID IE... */
1756         if (is_direct) {
1757                 /* ...next IE... */
1758                 left -= 2 + priv->essid_len;
1759                 if (left < 0)
1760                         return 0;
1761                 /* ... fill it in... */
1762                 *pos++ = WLAN_EID_SSID;
1763                 *pos++ = priv->essid_len;
1764                 memcpy(pos, priv->essid, priv->essid_len);
1765                 pos += priv->essid_len;
1766                 len += 2 + priv->essid_len;
1767         }
1768
1769         /* fill in supported rate */
1770         /* ...next IE... */
1771         left -= 2;
1772         if (left < 0)
1773                 return 0;
1774
1775         /* ... fill it in... */
1776         *pos++ = WLAN_EID_SUPP_RATES;
1777         *pos = 0;
1778
1779         /* exclude 60M rate */
1780         active_rates = priv->rates_mask;
1781         active_rates &= ~IWL_RATE_60M_MASK;
1782
1783         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1784
1785         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1786         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1787                         active_rate_basic, &left);
1788         active_rates &= ~ret_rates;
1789
1790         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1791                                  active_rate_basic, &left);
1792         active_rates &= ~ret_rates;
1793
1794         len += 2 + *pos;
1795         pos += (*pos) + 1;
1796         if (active_rates == 0)
1797                 goto fill_end;
1798
1799         /* fill in supported extended rate */
1800         /* ...next IE... */
1801         left -= 2;
1802         if (left < 0)
1803                 return 0;
1804         /* ... fill it in... */
1805         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1806         *pos = 0;
1807         iwl4965_supported_rate_to_ie(pos, active_rates,
1808                                  active_rate_basic, &left);
1809         if (*pos > 0)
1810                 len += 2 + *pos;
1811
1812 #ifdef CONFIG_IWL4965_HT
1813         if (sband && sband->ht_info.ht_supported) {
1814                 struct ieee80211_ht_cap *ht_cap;
1815                 pos += (*pos) + 1;
1816                 *pos++ = WLAN_EID_HT_CAPABILITY;
1817                 *pos++ = sizeof(struct ieee80211_ht_cap);
1818                 ht_cap = (struct ieee80211_ht_cap *)pos;
1819                 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1820                 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1821                 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1822                                             IEEE80211_HT_CAP_AMPDU_FACTOR) |
1823                                             ((sband->ht_info.ampdu_density << 2) &
1824                                             IEEE80211_HT_CAP_AMPDU_DENSITY);
1825                 len += 2 + sizeof(struct ieee80211_ht_cap);
1826         }
1827 #endif  /*CONFIG_IWL4965_HT */
1828
1829  fill_end:
1830         return (u16)len;
1831 }
1832
1833 /*
1834  * QoS  support
1835 */
1836 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1837                                        struct iwl4965_qosparam_cmd *qos)
1838 {
1839
1840         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1841                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1842 }
1843
1844 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
1845 {
1846         u16 cw_min = 15;
1847         u16 cw_max = 1023;
1848         u8 aifs = 2;
1849         u8 is_legacy = 0;
1850         unsigned long flags;
1851         int i;
1852
1853         spin_lock_irqsave(&priv->lock, flags);
1854         priv->qos_data.qos_active = 0;
1855
1856         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1857                 if (priv->qos_data.qos_enable)
1858                         priv->qos_data.qos_active = 1;
1859                 if (!(priv->active_rate & 0xfff0)) {
1860                         cw_min = 31;
1861                         is_legacy = 1;
1862                 }
1863         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1864                 if (priv->qos_data.qos_enable)
1865                         priv->qos_data.qos_active = 1;
1866         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1867                 cw_min = 31;
1868                 is_legacy = 1;
1869         }
1870
1871         if (priv->qos_data.qos_active)
1872                 aifs = 3;
1873
1874         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1875         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1876         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1877         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1878         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1879
1880         if (priv->qos_data.qos_active) {
1881                 i = 1;
1882                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1883                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1884                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1885                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1886                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1887
1888                 i = 2;
1889                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1890                         cpu_to_le16((cw_min + 1) / 2 - 1);
1891                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1892                         cpu_to_le16(cw_max);
1893                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1894                 if (is_legacy)
1895                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1896                                 cpu_to_le16(6016);
1897                 else
1898                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1899                                 cpu_to_le16(3008);
1900                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1901
1902                 i = 3;
1903                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1904                         cpu_to_le16((cw_min + 1) / 4 - 1);
1905                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1906                         cpu_to_le16((cw_max + 1) / 2 - 1);
1907                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1908                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1909                 if (is_legacy)
1910                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1911                                 cpu_to_le16(3264);
1912                 else
1913                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1914                                 cpu_to_le16(1504);
1915         } else {
1916                 for (i = 1; i < 4; i++) {
1917                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1918                                 cpu_to_le16(cw_min);
1919                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1920                                 cpu_to_le16(cw_max);
1921                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1922                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1923                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1924                 }
1925         }
1926         IWL_DEBUG_QOS("set QoS to default \n");
1927
1928         spin_unlock_irqrestore(&priv->lock, flags);
1929 }
1930
1931 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
1932 {
1933         unsigned long flags;
1934
1935         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1936                 return;
1937
1938         if (!priv->qos_data.qos_enable)
1939                 return;
1940
1941         spin_lock_irqsave(&priv->lock, flags);
1942         priv->qos_data.def_qos_parm.qos_flags = 0;
1943
1944         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1945             !priv->qos_data.qos_cap.q_AP.txop_request)
1946                 priv->qos_data.def_qos_parm.qos_flags |=
1947                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1948         if (priv->qos_data.qos_active)
1949                 priv->qos_data.def_qos_parm.qos_flags |=
1950                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1951
1952 #ifdef CONFIG_IWL4965_HT
1953         if (priv->current_ht_config.is_ht)
1954                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1955 #endif /* CONFIG_IWL4965_HT */
1956
1957         spin_unlock_irqrestore(&priv->lock, flags);
1958
1959         if (force || iwl4965_is_associated(priv)) {
1960                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1961                                 priv->qos_data.qos_active,
1962                                 priv->qos_data.def_qos_parm.qos_flags);
1963
1964                 iwl4965_send_qos_params_command(priv,
1965                                 &(priv->qos_data.def_qos_parm));
1966         }
1967 }
1968
1969 /*
1970  * Power management (not Tx power!) functions
1971  */
1972 #define MSEC_TO_USEC 1024
1973
1974 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1975 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1976 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1977 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1978                                      __constant_cpu_to_le32(X1), \
1979                                      __constant_cpu_to_le32(X2), \
1980                                      __constant_cpu_to_le32(X3), \
1981                                      __constant_cpu_to_le32(X4)}
1982
1983
1984 /* default power management (not Tx power) table values */
1985 /* for tim  0-10 */
1986 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1987         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1988         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1989         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1990         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1991         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1992         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1993 };
1994
1995 /* for tim > 10 */
1996 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1997         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1998         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1999                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2000         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2001                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2002         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2003                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2004         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2005         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2006                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2007 };
2008
2009 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2010 {
2011         int rc = 0, i;
2012         struct iwl4965_power_mgr *pow_data;
2013         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2014         u16 pci_pm;
2015
2016         IWL_DEBUG_POWER("Initialize power \n");
2017
2018         pow_data = &(priv->power_data);
2019
2020         memset(pow_data, 0, sizeof(*pow_data));
2021
2022         pow_data->active_index = IWL_POWER_RANGE_0;
2023         pow_data->dtim_val = 0xffff;
2024
2025         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2026         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2027
2028         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2029         if (rc != 0)
2030                 return 0;
2031         else {
2032                 struct iwl4965_powertable_cmd *cmd;
2033
2034                 IWL_DEBUG_POWER("adjust power command flags\n");
2035
2036                 for (i = 0; i < IWL_POWER_AC; i++) {
2037                         cmd = &pow_data->pwr_range_0[i].cmd;
2038
2039                         if (pci_pm & 0x1)
2040                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2041                         else
2042                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2043                 }
2044         }
2045         return rc;
2046 }
2047
2048 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2049                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
2050 {
2051         int rc = 0, i;
2052         u8 skip;
2053         u32 max_sleep = 0;
2054         struct iwl4965_power_vec_entry *range;
2055         u8 period = 0;
2056         struct iwl4965_power_mgr *pow_data;
2057
2058         if (mode > IWL_POWER_INDEX_5) {
2059                 IWL_DEBUG_POWER("Error invalid power mode \n");
2060                 return -1;
2061         }
2062         pow_data = &(priv->power_data);
2063
2064         if (pow_data->active_index == IWL_POWER_RANGE_0)
2065                 range = &pow_data->pwr_range_0[0];
2066         else
2067                 range = &pow_data->pwr_range_1[1];
2068
2069         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2070
2071 #ifdef IWL_MAC80211_DISABLE
2072         if (priv->assoc_network != NULL) {
2073                 unsigned long flags;
2074
2075                 period = priv->assoc_network->tim.tim_period;
2076         }
2077 #endif  /*IWL_MAC80211_DISABLE */
2078         skip = range[mode].no_dtim;
2079
2080         if (period == 0) {
2081                 period = 1;
2082                 skip = 0;
2083         }
2084
2085         if (skip == 0) {
2086                 max_sleep = period;
2087                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2088         } else {
2089                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2090                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2091                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2092         }
2093
2094         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2095                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2096                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2097         }
2098
2099         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2100         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2101         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2102         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2103                         le32_to_cpu(cmd->sleep_interval[0]),
2104                         le32_to_cpu(cmd->sleep_interval[1]),
2105                         le32_to_cpu(cmd->sleep_interval[2]),
2106                         le32_to_cpu(cmd->sleep_interval[3]),
2107                         le32_to_cpu(cmd->sleep_interval[4]));
2108
2109         return rc;
2110 }
2111
2112 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2113 {
2114         u32 uninitialized_var(final_mode);
2115         int rc;
2116         struct iwl4965_powertable_cmd cmd;
2117
2118         /* If on battery, set to 3,
2119          * if plugged into AC power, set to CAM ("continuously aware mode"),
2120          * else user level */
2121         switch (mode) {
2122         case IWL_POWER_BATTERY:
2123                 final_mode = IWL_POWER_INDEX_3;
2124                 break;
2125         case IWL_POWER_AC:
2126                 final_mode = IWL_POWER_MODE_CAM;
2127                 break;
2128         default:
2129                 final_mode = mode;
2130                 break;
2131         }
2132
2133         cmd.keep_alive_beacons = 0;
2134
2135         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2136
2137         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2138
2139         if (final_mode == IWL_POWER_MODE_CAM)
2140                 clear_bit(STATUS_POWER_PMI, &priv->status);
2141         else
2142                 set_bit(STATUS_POWER_PMI, &priv->status);
2143
2144         return rc;
2145 }
2146
2147 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2148 {
2149         /* Filter incoming packets to determine if they are targeted toward
2150          * this network, discarding packets coming from ourselves */
2151         switch (priv->iw_mode) {
2152         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2153                 /* packets from our adapter are dropped (echo) */
2154                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2155                         return 0;
2156                 /* {broad,multi}cast packets to our IBSS go through */
2157                 if (is_multicast_ether_addr(header->addr1))
2158                         return !compare_ether_addr(header->addr3, priv->bssid);
2159                 /* packets to our adapter go through */
2160                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2161         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2162                 /* packets from our adapter are dropped (echo) */
2163                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2164                         return 0;
2165                 /* {broad,multi}cast packets to our BSS go through */
2166                 if (is_multicast_ether_addr(header->addr1))
2167                         return !compare_ether_addr(header->addr2, priv->bssid);
2168                 /* packets to our adapter go through */
2169                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2170         }
2171
2172         return 1;
2173 }
2174
2175 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2176
2177 static const char *iwl4965_get_tx_fail_reason(u32 status)
2178 {
2179         switch (status & TX_STATUS_MSK) {
2180         case TX_STATUS_SUCCESS:
2181                 return "SUCCESS";
2182                 TX_STATUS_ENTRY(SHORT_LIMIT);
2183                 TX_STATUS_ENTRY(LONG_LIMIT);
2184                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2185                 TX_STATUS_ENTRY(MGMNT_ABORT);
2186                 TX_STATUS_ENTRY(NEXT_FRAG);
2187                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2188                 TX_STATUS_ENTRY(DEST_PS);
2189                 TX_STATUS_ENTRY(ABORTED);
2190                 TX_STATUS_ENTRY(BT_RETRY);
2191                 TX_STATUS_ENTRY(STA_INVALID);
2192                 TX_STATUS_ENTRY(FRAG_DROPPED);
2193                 TX_STATUS_ENTRY(TID_DISABLE);
2194                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2195                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2196                 TX_STATUS_ENTRY(TX_LOCKED);
2197                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2198         }
2199
2200         return "UNKNOWN";
2201 }
2202
2203 /**
2204  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2205  *
2206  * NOTE: priv->mutex is not required before calling this function
2207  */
2208 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2209 {
2210         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2211                 clear_bit(STATUS_SCANNING, &priv->status);
2212                 return 0;
2213         }
2214
2215         if (test_bit(STATUS_SCANNING, &priv->status)) {
2216                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2217                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2218                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2219                         queue_work(priv->workqueue, &priv->abort_scan);
2220
2221                 } else
2222                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2223
2224                 return test_bit(STATUS_SCANNING, &priv->status);
2225         }
2226
2227         return 0;
2228 }
2229
2230 /**
2231  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2232  * @ms: amount of time to wait (in milliseconds) for scan to abort
2233  *
2234  * NOTE: priv->mutex must be held before calling this function
2235  */
2236 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2237 {
2238         unsigned long now = jiffies;
2239         int ret;
2240
2241         ret = iwl4965_scan_cancel(priv);
2242         if (ret && ms) {
2243                 mutex_unlock(&priv->mutex);
2244                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2245                                 test_bit(STATUS_SCANNING, &priv->status))
2246                         msleep(1);
2247                 mutex_lock(&priv->mutex);
2248
2249                 return test_bit(STATUS_SCANNING, &priv->status);
2250         }
2251
2252         return ret;
2253 }
2254
2255 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2256 {
2257         /* Reset ieee stats */
2258
2259         /* We don't reset the net_device_stats (ieee->stats) on
2260          * re-association */
2261
2262         priv->last_seq_num = -1;
2263         priv->last_frag_num = -1;
2264         priv->last_packet_time = 0;
2265
2266         iwl4965_scan_cancel(priv);
2267 }
2268
2269 #define MAX_UCODE_BEACON_INTERVAL       4096
2270 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2271
2272 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2273 {
2274         u16 new_val = 0;
2275         u16 beacon_factor = 0;
2276
2277         beacon_factor =
2278             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2279                 / MAX_UCODE_BEACON_INTERVAL;
2280         new_val = beacon_val / beacon_factor;
2281
2282         return cpu_to_le16(new_val);
2283 }
2284
2285 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2286 {
2287         u64 interval_tm_unit;
2288         u64 tsf, result;
2289         unsigned long flags;
2290         struct ieee80211_conf *conf = NULL;
2291         u16 beacon_int = 0;
2292
2293         conf = ieee80211_get_hw_conf(priv->hw);
2294
2295         spin_lock_irqsave(&priv->lock, flags);
2296         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2297         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2298
2299         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2300
2301         tsf = priv->timestamp1;
2302         tsf = ((tsf << 32) | priv->timestamp0);
2303
2304         beacon_int = priv->beacon_int;
2305         spin_unlock_irqrestore(&priv->lock, flags);
2306
2307         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2308                 if (beacon_int == 0) {
2309                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2310                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2311                 } else {
2312                         priv->rxon_timing.beacon_interval =
2313                                 cpu_to_le16(beacon_int);
2314                         priv->rxon_timing.beacon_interval =
2315                             iwl4965_adjust_beacon_interval(
2316                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2317                 }
2318
2319                 priv->rxon_timing.atim_window = 0;
2320         } else {
2321                 priv->rxon_timing.beacon_interval =
2322                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2323                 /* TODO: we need to get atim_window from upper stack
2324                  * for now we set to 0 */
2325                 priv->rxon_timing.atim_window = 0;
2326         }
2327
2328         interval_tm_unit =
2329                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2330         result = do_div(tsf, interval_tm_unit);
2331         priv->rxon_timing.beacon_init_val =
2332             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2333
2334         IWL_DEBUG_ASSOC
2335             ("beacon interval %d beacon timer %d beacon tim %d\n",
2336                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2337                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2338                 le16_to_cpu(priv->rxon_timing.atim_window));
2339 }
2340
2341 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2342 {
2343         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2344                 IWL_ERROR("APs don't scan.\n");
2345                 return 0;
2346         }
2347
2348         if (!iwl4965_is_ready_rf(priv)) {
2349                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2350                 return -EIO;
2351         }
2352
2353         if (test_bit(STATUS_SCANNING, &priv->status)) {
2354                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2355                 return -EAGAIN;
2356         }
2357
2358         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2359                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2360                                "Queuing.\n");
2361                 return -EAGAIN;
2362         }
2363
2364         IWL_DEBUG_INFO("Starting scan...\n");
2365         priv->scan_bands = 2;
2366         set_bit(STATUS_SCANNING, &priv->status);
2367         priv->scan_start = jiffies;
2368         priv->scan_pass_start = priv->scan_start;
2369
2370         queue_work(priv->workqueue, &priv->request_scan);
2371
2372         return 0;
2373 }
2374
2375 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2376 {
2377         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2378
2379         if (hw_decrypt)
2380                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2381         else
2382                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2383
2384         return 0;
2385 }
2386
2387 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv,
2388                                           enum ieee80211_band band)
2389 {
2390         if (band == IEEE80211_BAND_5GHZ) {
2391                 priv->staging_rxon.flags &=
2392                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2393                       | RXON_FLG_CCK_MSK);
2394                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2395         } else {
2396                 /* Copied from iwl4965_bg_post_associate() */
2397                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2398                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2399                 else
2400                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2401
2402                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2403                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2404
2405                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2406                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2407                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2408         }
2409 }
2410
2411 /*
2412  * initialize rxon structure with default values from eeprom
2413  */
2414 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2415 {
2416         const struct iwl4965_channel_info *ch_info;
2417
2418         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2419
2420         switch (priv->iw_mode) {
2421         case IEEE80211_IF_TYPE_AP:
2422                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2423                 break;
2424
2425         case IEEE80211_IF_TYPE_STA:
2426                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2427                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2428                 break;
2429
2430         case IEEE80211_IF_TYPE_IBSS:
2431                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2432                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2433                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2434                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2435                 break;
2436
2437         case IEEE80211_IF_TYPE_MNTR:
2438                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2439                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2440                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2441                 break;
2442         }
2443
2444 #if 0
2445         /* TODO:  Figure out when short_preamble would be set and cache from
2446          * that */
2447         if (!hw_to_local(priv->hw)->short_preamble)
2448                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2449         else
2450                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2451 #endif
2452
2453         ch_info = iwl4965_get_channel_info(priv, priv->band,
2454                                        le16_to_cpu(priv->staging_rxon.channel));
2455
2456         if (!ch_info)
2457                 ch_info = &priv->channel_info[0];
2458
2459         /*
2460          * in some case A channels are all non IBSS
2461          * in this case force B/G channel
2462          */
2463         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2464             !(is_channel_ibss(ch_info)))
2465                 ch_info = &priv->channel_info[0];
2466
2467         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2468         priv->band = ch_info->band;
2469
2470         iwl4965_set_flags_for_phymode(priv, priv->band);
2471
2472         priv->staging_rxon.ofdm_basic_rates =
2473             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2474         priv->staging_rxon.cck_basic_rates =
2475             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2476
2477         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2478                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2479         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2480         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2481         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2482         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2483         iwl4965_set_rxon_chain(priv);
2484 }
2485
2486 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2487 {
2488         if (mode == IEEE80211_IF_TYPE_IBSS) {
2489                 const struct iwl4965_channel_info *ch_info;
2490
2491                 ch_info = iwl4965_get_channel_info(priv,
2492                         priv->band,
2493                         le16_to_cpu(priv->staging_rxon.channel));
2494
2495                 if (!ch_info || !is_channel_ibss(ch_info)) {
2496                         IWL_ERROR("channel %d not IBSS channel\n",
2497                                   le16_to_cpu(priv->staging_rxon.channel));
2498                         return -EINVAL;
2499                 }
2500         }
2501
2502         priv->iw_mode = mode;
2503
2504         iwl4965_connection_init_rx_config(priv);
2505         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2506
2507         iwl4965_clear_stations_table(priv);
2508
2509         /* dont commit rxon if rf-kill is on*/
2510         if (!iwl4965_is_ready_rf(priv))
2511                 return -EAGAIN;
2512
2513         cancel_delayed_work(&priv->scan_check);
2514         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2515                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2516                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2517                 return -EAGAIN;
2518         }
2519
2520         iwl4965_commit_rxon(priv);
2521
2522         return 0;
2523 }
2524
2525 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2526                                       struct ieee80211_tx_control *ctl,
2527                                       struct iwl4965_cmd *cmd,
2528                                       struct sk_buff *skb_frag,
2529                                       int last_frag)
2530 {
2531         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2532
2533         switch (keyinfo->alg) {
2534         case ALG_CCMP:
2535                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2536                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2537                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2538                 break;
2539
2540         case ALG_TKIP:
2541 #if 0
2542                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2543
2544                 if (last_frag)
2545                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2546                                8);
2547                 else
2548                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2549 #endif
2550                 break;
2551
2552         case ALG_WEP:
2553                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2554                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2555
2556                 if (keyinfo->keylen == 13)
2557                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2558
2559                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2560
2561                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2562                              "with key %d\n", ctl->key_idx);
2563                 break;
2564
2565         default:
2566                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2567                 break;
2568         }
2569 }
2570
2571 /*
2572  * handle build REPLY_TX command notification.
2573  */
2574 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2575                                   struct iwl4965_cmd *cmd,
2576                                   struct ieee80211_tx_control *ctrl,
2577                                   struct ieee80211_hdr *hdr,
2578                                   int is_unicast, u8 std_id)
2579 {
2580         __le16 *qc;
2581         u16 fc = le16_to_cpu(hdr->frame_control);
2582         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2583
2584         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2585         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2586                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2587                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2588                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2589                 if (ieee80211_is_probe_response(fc) &&
2590                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2591                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2592         } else {
2593                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2594                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2595         }
2596
2597         if (ieee80211_is_back_request(fc))
2598                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2599
2600
2601         cmd->cmd.tx.sta_id = std_id;
2602         if (ieee80211_get_morefrag(hdr))
2603                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2604
2605         qc = ieee80211_get_qos_ctrl(hdr);
2606         if (qc) {
2607                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2608                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2609         } else
2610                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2611
2612         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2613                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2614                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2615         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2616                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2617                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2618         }
2619
2620         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2621                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2622
2623         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2624         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2625                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2626                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2627                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2628                 else
2629                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2630         } else
2631                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2632
2633         cmd->cmd.tx.driver_txop = 0;
2634         cmd->cmd.tx.tx_flags = tx_flags;
2635         cmd->cmd.tx.next_frame_len = 0;
2636 }
2637
2638 /**
2639  * iwl4965_get_sta_id - Find station's index within station table
2640  *
2641  * If new IBSS station, create new entry in station table
2642  */
2643 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2644                                 struct ieee80211_hdr *hdr)
2645 {
2646         int sta_id;
2647         u16 fc = le16_to_cpu(hdr->frame_control);
2648         DECLARE_MAC_BUF(mac);
2649
2650         /* If this frame is broadcast or management, use broadcast station id */
2651         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2652             is_multicast_ether_addr(hdr->addr1))
2653                 return priv->hw_setting.bcast_sta_id;
2654
2655         switch (priv->iw_mode) {
2656
2657         /* If we are a client station in a BSS network, use the special
2658          * AP station entry (that's the only station we communicate with) */
2659         case IEEE80211_IF_TYPE_STA:
2660                 return IWL_AP_ID;
2661
2662         /* If we are an AP, then find the station, or use BCAST */
2663         case IEEE80211_IF_TYPE_AP:
2664                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2665                 if (sta_id != IWL_INVALID_STATION)
2666                         return sta_id;
2667                 return priv->hw_setting.bcast_sta_id;
2668
2669         /* If this frame is going out to an IBSS network, find the station,
2670          * or create a new station table entry */
2671         case IEEE80211_IF_TYPE_IBSS:
2672                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2673                 if (sta_id != IWL_INVALID_STATION)
2674                         return sta_id;
2675
2676                 /* Create new station table entry */
2677                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2678                                                    0, CMD_ASYNC, NULL);
2679
2680                 if (sta_id != IWL_INVALID_STATION)
2681                         return sta_id;
2682
2683                 IWL_DEBUG_DROP("Station %s not in station map. "
2684                                "Defaulting to broadcast...\n",
2685                                print_mac(mac, hdr->addr1));
2686                 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2687                 return priv->hw_setting.bcast_sta_id;
2688
2689         default:
2690                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2691                 return priv->hw_setting.bcast_sta_id;
2692         }
2693 }
2694
2695 /*
2696  * start REPLY_TX command process
2697  */
2698 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2699                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2700 {
2701         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2702         struct iwl4965_tfd_frame *tfd;
2703         u32 *control_flags;
2704         int txq_id = ctl->queue;
2705         struct iwl4965_tx_queue *txq = NULL;
2706         struct iwl4965_queue *q = NULL;
2707         dma_addr_t phys_addr;
2708         dma_addr_t txcmd_phys;
2709         dma_addr_t scratch_phys;
2710         struct iwl4965_cmd *out_cmd = NULL;
2711         u16 len, idx, len_org;
2712         u8 id, hdr_len, unicast;
2713         u8 sta_id;
2714         u16 seq_number = 0;
2715         u16 fc;
2716         __le16 *qc;
2717         u8 wait_write_ptr = 0;
2718         unsigned long flags;
2719         int rc;
2720
2721         spin_lock_irqsave(&priv->lock, flags);
2722         if (iwl4965_is_rfkill(priv)) {
2723                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2724                 goto drop_unlock;
2725         }
2726
2727         if (!priv->vif) {
2728                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2729                 goto drop_unlock;
2730         }
2731
2732         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2733                 IWL_ERROR("ERROR: No TX rate available.\n");
2734                 goto drop_unlock;
2735         }
2736
2737         unicast = !is_multicast_ether_addr(hdr->addr1);
2738         id = 0;
2739
2740         fc = le16_to_cpu(hdr->frame_control);
2741
2742 #ifdef CONFIG_IWL4965_DEBUG
2743         if (ieee80211_is_auth(fc))
2744                 IWL_DEBUG_TX("Sending AUTH frame\n");
2745         else if (ieee80211_is_assoc_request(fc))
2746                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2747         else if (ieee80211_is_reassoc_request(fc))
2748                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2749 #endif
2750
2751         /* drop all data frame if we are not associated */
2752         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2753            (!iwl4965_is_associated(priv) ||
2754             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2755             !priv->assoc_station_added)) {
2756                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2757                 goto drop_unlock;
2758         }
2759
2760         spin_unlock_irqrestore(&priv->lock, flags);
2761
2762         hdr_len = ieee80211_get_hdrlen(fc);
2763
2764         /* Find (or create) index into station table for destination station */
2765         sta_id = iwl4965_get_sta_id(priv, hdr);
2766         if (sta_id == IWL_INVALID_STATION) {
2767                 DECLARE_MAC_BUF(mac);
2768
2769                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2770                                print_mac(mac, hdr->addr1));
2771                 goto drop;
2772         }
2773
2774         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2775
2776         qc = ieee80211_get_qos_ctrl(hdr);
2777         if (qc) {
2778                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2779                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2780                                 IEEE80211_SCTL_SEQ;
2781                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2782                         (hdr->seq_ctrl &
2783                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2784                 seq_number += 0x10;
2785 #ifdef CONFIG_IWL4965_HT
2786                 /* aggregation is on for this <sta,tid> */
2787                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2788                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2789                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2790 #endif /* CONFIG_IWL4965_HT */
2791         }
2792
2793         /* Descriptor for chosen Tx queue */
2794         txq = &priv->txq[txq_id];
2795         q = &txq->q;
2796
2797         spin_lock_irqsave(&priv->lock, flags);
2798
2799         /* Set up first empty TFD within this queue's circular TFD buffer */
2800         tfd = &txq->bd[q->write_ptr];
2801         memset(tfd, 0, sizeof(*tfd));
2802         control_flags = (u32 *) tfd;
2803         idx = get_cmd_index(q, q->write_ptr, 0);
2804
2805         /* Set up driver data for this TFD */
2806         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2807         txq->txb[q->write_ptr].skb[0] = skb;
2808         memcpy(&(txq->txb[q->write_ptr].status.control),
2809                ctl, sizeof(struct ieee80211_tx_control));
2810
2811         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2812         out_cmd = &txq->cmd[idx];
2813         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2814         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2815
2816         /*
2817          * Set up the Tx-command (not MAC!) header.
2818          * Store the chosen Tx queue and TFD index within the sequence field;
2819          * after Tx, uCode's Tx response will return this value so driver can
2820          * locate the frame within the tx queue and do post-tx processing.
2821          */
2822         out_cmd->hdr.cmd = REPLY_TX;
2823         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2824                                 INDEX_TO_SEQ(q->write_ptr)));
2825
2826         /* Copy MAC header from skb into command buffer */
2827         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2828
2829         /*
2830          * Use the first empty entry in this queue's command buffer array
2831          * to contain the Tx command and MAC header concatenated together
2832          * (payload data will be in another buffer).
2833          * Size of this varies, due to varying MAC header length.
2834          * If end is not dword aligned, we'll have 2 extra bytes at the end
2835          * of the MAC header (device reads on dword boundaries).
2836          * We'll tell device about this padding later.
2837          */
2838         len = priv->hw_setting.tx_cmd_len +
2839                 sizeof(struct iwl4965_cmd_header) + hdr_len;
2840
2841         len_org = len;
2842         len = (len + 3) & ~3;
2843
2844         if (len_org != len)
2845                 len_org = 1;
2846         else
2847                 len_org = 0;
2848
2849         /* Physical address of this Tx command's header (not MAC header!),
2850          * within command buffer array. */
2851         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
2852                      offsetof(struct iwl4965_cmd, hdr);
2853
2854         /* Add buffer containing Tx command and MAC(!) header to TFD's
2855          * first entry */
2856         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2857
2858         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2859                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2860
2861         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2862          * if any (802.11 null frames have no payload). */
2863         len = skb->len - hdr_len;
2864         if (len) {
2865                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2866                                            len, PCI_DMA_TODEVICE);
2867                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2868         }
2869
2870         /* Tell 4965 about any 2-byte padding after MAC header */
2871         if (len_org)
2872                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2873
2874         /* Total # bytes to be transmitted */
2875         len = (u16)skb->len;
2876         out_cmd->cmd.tx.len = cpu_to_le16(len);
2877
2878         /* TODO need this for burst mode later on */
2879         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2880
2881         /* set is_hcca to 0; it probably will never be implemented */
2882         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2883
2884         scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
2885                 offsetof(struct iwl4965_tx_cmd, scratch);
2886         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2887         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2888
2889         if (!ieee80211_get_morefrag(hdr)) {
2890                 txq->need_update = 1;
2891                 if (qc) {
2892                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2893                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2894                 }
2895         } else {
2896                 wait_write_ptr = 1;
2897                 txq->need_update = 0;
2898         }
2899
2900         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2901                            sizeof(out_cmd->cmd.tx));
2902
2903         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2904                            ieee80211_get_hdrlen(fc));
2905
2906         /* Set up entry for this TFD in Tx byte-count array */
2907         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2908
2909         /* Tell device the write index *just past* this latest filled TFD */
2910         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
2911         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2912         spin_unlock_irqrestore(&priv->lock, flags);
2913
2914         if (rc)
2915                 return rc;
2916
2917         if ((iwl4965_queue_space(q) < q->high_mark)
2918             && priv->mac80211_registered) {
2919                 if (wait_write_ptr) {
2920                         spin_lock_irqsave(&priv->lock, flags);
2921                         txq->need_update = 1;
2922                         iwl4965_tx_queue_update_write_ptr(priv, txq);
2923                         spin_unlock_irqrestore(&priv->lock, flags);
2924                 }
2925
2926                 ieee80211_stop_queue(priv->hw, ctl->queue);
2927         }
2928
2929         return 0;
2930
2931 drop_unlock:
2932         spin_unlock_irqrestore(&priv->lock, flags);
2933 drop:
2934         return -1;
2935 }
2936
2937 static void iwl4965_set_rate(struct iwl4965_priv *priv)
2938 {
2939         const struct ieee80211_supported_band *hw = NULL;
2940         struct ieee80211_rate *rate;
2941         int i;
2942
2943         hw = iwl4965_get_hw_mode(priv, priv->band);
2944         if (!hw) {
2945                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2946                 return;
2947         }
2948
2949         priv->active_rate = 0;
2950         priv->active_rate_basic = 0;
2951
2952         for (i = 0; i < hw->n_bitrates; i++) {
2953                 rate = &(hw->bitrates[i]);
2954                 if (rate->hw_value < IWL_RATE_COUNT)
2955                         priv->active_rate |= (1 << rate->hw_value);
2956         }
2957
2958         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2959                        priv->active_rate, priv->active_rate_basic);
2960
2961         /*
2962          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2963          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2964          * OFDM
2965          */
2966         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2967                 priv->staging_rxon.cck_basic_rates =
2968                     ((priv->active_rate_basic &
2969                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2970         else
2971                 priv->staging_rxon.cck_basic_rates =
2972                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2973
2974         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2975                 priv->staging_rxon.ofdm_basic_rates =
2976                     ((priv->active_rate_basic &
2977                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2978                       IWL_FIRST_OFDM_RATE) & 0xFF;
2979         else
2980                 priv->staging_rxon.ofdm_basic_rates =
2981                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2982 }
2983
2984 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
2985 {
2986         unsigned long flags;
2987
2988         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2989                 return;
2990
2991         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2992                           disable_radio ? "OFF" : "ON");
2993
2994         if (disable_radio) {
2995                 iwl4965_scan_cancel(priv);
2996                 /* FIXME: This is a workaround for AP */
2997                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2998                         spin_lock_irqsave(&priv->lock, flags);
2999                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3000                                     CSR_UCODE_SW_BIT_RFKILL);
3001                         spin_unlock_irqrestore(&priv->lock, flags);
3002                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3003                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3004                 }
3005                 return;
3006         }
3007
3008         spin_lock_irqsave(&priv->lock, flags);
3009         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3010
3011         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3012         spin_unlock_irqrestore(&priv->lock, flags);
3013
3014         /* wake up ucode */
3015         msleep(10);
3016
3017         spin_lock_irqsave(&priv->lock, flags);
3018         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3019         if (!iwl4965_grab_nic_access(priv))
3020                 iwl4965_release_nic_access(priv);
3021         spin_unlock_irqrestore(&priv->lock, flags);
3022
3023         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3024                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3025                                   "disabled by HW switch\n");
3026                 return;
3027         }
3028
3029         queue_work(priv->workqueue, &priv->restart);
3030         return;
3031 }
3032
3033 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3034                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3035 {
3036         u16 fc =
3037             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3038
3039         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3040                 return;
3041
3042         if (!(fc & IEEE80211_FCTL_PROTECTED))
3043                 return;
3044
3045         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3046         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3047         case RX_RES_STATUS_SEC_TYPE_TKIP:
3048                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3049                     RX_RES_STATUS_BAD_ICV_MIC)
3050                         stats->flag |= RX_FLAG_MMIC_ERROR;
3051         case RX_RES_STATUS_SEC_TYPE_WEP:
3052         case RX_RES_STATUS_SEC_TYPE_CCMP:
3053                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3054                     RX_RES_STATUS_DECRYPT_OK) {
3055                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3056                         stats->flag |= RX_FLAG_DECRYPTED;
3057                 }
3058                 break;
3059
3060         default:
3061                 break;
3062         }
3063 }
3064
3065
3066 #define IWL_PACKET_RETRY_TIME HZ
3067
3068 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3069 {
3070         u16 sc = le16_to_cpu(header->seq_ctrl);
3071         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3072         u16 frag = sc & IEEE80211_SCTL_FRAG;
3073         u16 *last_seq, *last_frag;
3074         unsigned long *last_time;
3075
3076         switch (priv->iw_mode) {
3077         case IEEE80211_IF_TYPE_IBSS:{
3078                 struct list_head *p;
3079                 struct iwl4965_ibss_seq *entry = NULL;
3080                 u8 *mac = header->addr2;
3081                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3082
3083                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3084                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
3085                         if (!compare_ether_addr(entry->mac, mac))
3086                                 break;
3087                 }
3088                 if (p == &priv->ibss_mac_hash[index]) {
3089                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3090                         if (!entry) {
3091                                 IWL_ERROR("Cannot malloc new mac entry\n");
3092                                 return 0;
3093                         }
3094                         memcpy(entry->mac, mac, ETH_ALEN);
3095                         entry->seq_num = seq;
3096                         entry->frag_num = frag;
3097                         entry->packet_time = jiffies;
3098                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3099                         return 0;
3100                 }
3101                 last_seq = &entry->seq_num;
3102                 last_frag = &entry->frag_num;
3103                 last_time = &entry->packet_time;
3104                 break;
3105         }
3106         case IEEE80211_IF_TYPE_STA:
3107                 last_seq = &priv->last_seq_num;
3108                 last_frag = &priv->last_frag_num;
3109                 last_time = &priv->last_packet_time;
3110                 break;
3111         default:
3112                 return 0;
3113         }
3114         if ((*last_seq == seq) &&
3115             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3116                 if (*last_frag == frag)
3117                         goto drop;
3118                 if (*last_frag + 1 != frag)
3119                         /* out-of-order fragment */
3120                         goto drop;
3121         } else
3122                 *last_seq = seq;
3123
3124         *last_frag = frag;
3125         *last_time = jiffies;
3126         return 0;
3127
3128  drop:
3129         return 1;
3130 }
3131
3132 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3133
3134 #include "iwl-spectrum.h"
3135
3136 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3137 #define BEACON_TIME_MASK_HIGH   0xFF000000
3138 #define TIME_UNIT               1024
3139
3140 /*
3141  * extended beacon time format
3142  * time in usec will be changed into a 32-bit value in 8:24 format
3143  * the high 1 byte is the beacon counts
3144  * the lower 3 bytes is the time in usec within one beacon interval
3145  */
3146
3147 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3148 {
3149         u32 quot;
3150         u32 rem;
3151         u32 interval = beacon_interval * 1024;
3152
3153         if (!interval || !usec)
3154                 return 0;
3155
3156         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3157         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3158
3159         return (quot << 24) + rem;
3160 }
3161
3162 /* base is usually what we get from ucode with each received frame,
3163  * the same as HW timer counter counting down
3164  */
3165
3166 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3167 {
3168         u32 base_low = base & BEACON_TIME_MASK_LOW;
3169         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3170         u32 interval = beacon_interval * TIME_UNIT;
3171         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3172             (addon & BEACON_TIME_MASK_HIGH);
3173
3174         if (base_low > addon_low)
3175                 res += base_low - addon_low;
3176         else if (base_low < addon_low) {
3177                 res += interval + base_low - addon_low;
3178                 res += (1 << 24);
3179         } else
3180                 res += (1 << 24);
3181
3182         return cpu_to_le32(res);
3183 }
3184
3185 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3186                                struct ieee80211_measurement_params *params,
3187                                u8 type)
3188 {
3189         struct iwl4965_spectrum_cmd spectrum;
3190         struct iwl4965_rx_packet *res;
3191         struct iwl4965_host_cmd cmd = {
3192                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3193                 .data = (void *)&spectrum,
3194                 .meta.flags = CMD_WANT_SKB,
3195         };
3196         u32 add_time = le64_to_cpu(params->start_time);
3197         int rc;
3198         int spectrum_resp_status;
3199         int duration = le16_to_cpu(params->duration);
3200
3201         if (iwl4965_is_associated(priv))
3202                 add_time =
3203                     iwl4965_usecs_to_beacons(
3204                         le64_to_cpu(params->start_time) - priv->last_tsf,
3205                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3206
3207         memset(&spectrum, 0, sizeof(spectrum));
3208
3209         spectrum.channel_count = cpu_to_le16(1);
3210         spectrum.flags =
3211             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3212         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3213         cmd.len = sizeof(spectrum);
3214         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3215
3216         if (iwl4965_is_associated(priv))
3217                 spectrum.start_time =
3218                     iwl4965_add_beacon_time(priv->last_beacon_time,
3219                                 add_time,
3220                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3221         else
3222                 spectrum.start_time = 0;
3223
3224         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3225         spectrum.channels[0].channel = params->channel;
3226         spectrum.channels[0].type = type;
3227         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3228                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3229                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3230
3231         rc = iwl4965_send_cmd_sync(priv, &cmd);
3232         if (rc)
3233                 return rc;
3234
3235         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3236         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3237                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3238                 rc = -EIO;
3239         }
3240
3241         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3242         switch (spectrum_resp_status) {
3243         case 0:         /* Command will be handled */
3244                 if (res->u.spectrum.id != 0xff) {
3245                         IWL_DEBUG_INFO
3246                             ("Replaced existing measurement: %d\n",
3247                              res->u.spectrum.id);
3248                         priv->measurement_status &= ~MEASUREMENT_READY;
3249                 }
3250                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3251                 rc = 0;
3252                 break;
3253
3254         case 1:         /* Command will not be handled */
3255                 rc = -EAGAIN;
3256                 break;
3257         }
3258
3259         dev_kfree_skb_any(cmd.meta.u.skb);
3260
3261         return rc;
3262 }
3263 #endif
3264
3265 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3266                                  struct iwl4965_tx_info *tx_sta)
3267 {
3268
3269         tx_sta->status.ack_signal = 0;
3270         tx_sta->status.excessive_retries = 0;
3271         tx_sta->status.queue_length = 0;
3272         tx_sta->status.queue_number = 0;
3273
3274         if (in_interrupt())
3275                 ieee80211_tx_status_irqsafe(priv->hw,
3276                                             tx_sta->skb[0], &(tx_sta->status));
3277         else
3278                 ieee80211_tx_status(priv->hw,
3279                                     tx_sta->skb[0], &(tx_sta->status));
3280
3281         tx_sta->skb[0] = NULL;
3282 }
3283
3284 /**
3285  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3286  *
3287  * When FW advances 'R' index, all entries between old and new 'R' index
3288  * need to be reclaimed. As result, some free space forms.  If there is
3289  * enough free space (> low mark), wake the stack that feeds us.
3290  */
3291 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3292 {
3293         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3294         struct iwl4965_queue *q = &txq->q;
3295         int nfreed = 0;
3296
3297         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3298                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3299                           "is out of range [0-%d] %d %d.\n", txq_id,
3300                           index, q->n_bd, q->write_ptr, q->read_ptr);
3301                 return 0;
3302         }
3303
3304         for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3305                 q->read_ptr != index;
3306                 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3307                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3308                         iwl4965_txstatus_to_ieee(priv,
3309                                         &(txq->txb[txq->q.read_ptr]));
3310                         iwl4965_hw_txq_free_tfd(priv, txq);
3311                 } else if (nfreed > 1) {
3312                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3313                                         q->write_ptr, q->read_ptr);
3314                         queue_work(priv->workqueue, &priv->restart);
3315                 }
3316                 nfreed++;
3317         }
3318
3319 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3320                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3321                         priv->mac80211_registered)
3322                 ieee80211_wake_queue(priv->hw, txq_id); */
3323
3324
3325         return nfreed;
3326 }
3327
3328 static int iwl4965_is_tx_success(u32 status)
3329 {
3330         status &= TX_STATUS_MSK;
3331         return (status == TX_STATUS_SUCCESS)
3332             || (status == TX_STATUS_DIRECT_DONE);
3333 }
3334
3335 /******************************************************************************
3336  *
3337  * Generic RX handler implementations
3338  *
3339  ******************************************************************************/
3340 #ifdef CONFIG_IWL4965_HT
3341
3342 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3343                                     struct ieee80211_hdr *hdr)
3344 {
3345         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3346                 return IWL_AP_ID;
3347         else {
3348                 u8 *da = ieee80211_get_DA(hdr);
3349                 return iwl4965_hw_find_station(priv, da);
3350         }
3351 }
3352
3353 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3354         struct iwl4965_priv *priv, int txq_id, int idx)
3355 {
3356         if (priv->txq[txq_id].txb[idx].skb[0])
3357                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3358                                 txb[idx].skb[0]->data;
3359         return NULL;
3360 }
3361
3362 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3363 {
3364         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3365                                 tx_resp->frame_count);
3366         return le32_to_cpu(*scd_ssn) & MAX_SN;
3367
3368 }
3369
3370 /**
3371  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3372  */
3373 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3374                                       struct iwl4965_ht_agg *agg,
3375                                       struct iwl4965_tx_resp_agg *tx_resp,
3376                                       u16 start_idx)
3377 {
3378         u16 status;
3379         struct agg_tx_status *frame_status = &tx_resp->status;
3380         struct ieee80211_tx_status *tx_status = NULL;
3381         struct ieee80211_hdr *hdr = NULL;
3382         int i, sh;
3383         int txq_id, idx;
3384         u16 seq;
3385
3386         if (agg->wait_for_ba)
3387                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3388
3389         agg->frame_count = tx_resp->frame_count;
3390         agg->start_idx = start_idx;
3391         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3392         agg->bitmap = 0;
3393
3394         /* # frames attempted by Tx command */
3395         if (agg->frame_count == 1) {
3396                 /* Only one frame was attempted; no block-ack will arrive */
3397                 status = le16_to_cpu(frame_status[0].status);
3398                 seq  = le16_to_cpu(frame_status[0].sequence);
3399                 idx = SEQ_TO_INDEX(seq);
3400                 txq_id = SEQ_TO_QUEUE(seq);
3401
3402                 /* FIXME: code repetition */
3403                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3404                                    agg->frame_count, agg->start_idx, idx);
3405
3406                 tx_status = &(priv->txq[txq_id].txb[idx].status);
3407                 tx_status->retry_count = tx_resp->failure_frame;
3408                 tx_status->queue_number = status & 0xff;
3409                 tx_status->queue_length = tx_resp->failure_rts;
3410                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3411                 tx_status->flags = iwl4965_is_tx_success(status)?
3412                         IEEE80211_TX_STATUS_ACK : 0;
3413                 iwl4965_hwrate_to_tx_control(priv,
3414                                              le32_to_cpu(tx_resp->rate_n_flags),
3415                                              &tx_status->control);
3416                 /* FIXME: code repetition end */
3417
3418                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3419                                     status & 0xff, tx_resp->failure_frame);
3420                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3421                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3422
3423                 agg->wait_for_ba = 0;
3424         } else {
3425                 /* Two or more frames were attempted; expect block-ack */
3426                 u64 bitmap = 0;
3427                 int start = agg->start_idx;
3428
3429                 /* Construct bit-map of pending frames within Tx window */
3430                 for (i = 0; i < agg->frame_count; i++) {
3431                         u16 sc;
3432                         status = le16_to_cpu(frame_status[i].status);
3433                         seq  = le16_to_cpu(frame_status[i].sequence);
3434                         idx = SEQ_TO_INDEX(seq);
3435                         txq_id = SEQ_TO_QUEUE(seq);
3436
3437                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3438                                       AGG_TX_STATE_ABORT_MSK))
3439                                 continue;
3440
3441                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3442                                            agg->frame_count, txq_id, idx);
3443
3444                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3445
3446                         sc = le16_to_cpu(hdr->seq_ctrl);
3447                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3448                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3449                                           " idx=%d, seq_idx=%d, seq=%d\n",
3450                                           idx, SEQ_TO_SN(sc),
3451                                           hdr->seq_ctrl);
3452                                 return -1;
3453                         }
3454
3455                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3456                                            i, idx, SEQ_TO_SN(sc));
3457
3458                         sh = idx - start;
3459                         if (sh > 64) {
3460                                 sh = (start - idx) + 0xff;
3461                                 bitmap = bitmap << sh;
3462                                 sh = 0;
3463                                 start = idx;
3464                         } else if (sh < -64)
3465                                 sh  = 0xff - (start - idx);
3466                         else if (sh < 0) {
3467                                 sh = start - idx;
3468                                 start = idx;
3469                                 bitmap = bitmap << sh;
3470                                 sh = 0;
3471                         }
3472                         bitmap |= (1 << sh);
3473                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3474                                            start, (u32)(bitmap & 0xFFFFFFFF));
3475                 }
3476
3477                 agg->bitmap = bitmap;
3478                 agg->start_idx = start;
3479                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3480                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3481                                    agg->frame_count, agg->start_idx,
3482                                    agg->bitmap);
3483
3484                 if (bitmap)
3485                         agg->wait_for_ba = 1;
3486         }
3487         return 0;
3488 }
3489 #endif
3490
3491 /**
3492  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3493  */
3494 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3495                             struct iwl4965_rx_mem_buffer *rxb)
3496 {
3497         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3498         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3499         int txq_id = SEQ_TO_QUEUE(sequence);
3500         int index = SEQ_TO_INDEX(sequence);
3501         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3502         struct ieee80211_tx_status *tx_status;
3503         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3504         u32  status = le32_to_cpu(tx_resp->status);
3505 #ifdef CONFIG_IWL4965_HT
3506         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3507         struct ieee80211_hdr *hdr;
3508         __le16 *qc;
3509 #endif
3510
3511         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3512                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3513                           "is out of range [0-%d] %d %d\n", txq_id,
3514                           index, txq->q.n_bd, txq->q.write_ptr,
3515                           txq->q.read_ptr);
3516                 return;
3517         }
3518
3519 #ifdef CONFIG_IWL4965_HT
3520         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3521         qc = ieee80211_get_qos_ctrl(hdr);
3522
3523         if (qc)
3524                 tid = le16_to_cpu(*qc) & 0xf;
3525
3526         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3527         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3528                 IWL_ERROR("Station not known\n");
3529                 return;
3530         }
3531
3532         if (txq->sched_retry) {
3533                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3534                 struct iwl4965_ht_agg *agg = NULL;
3535
3536                 if (!qc)
3537                         return;
3538
3539                 agg = &priv->stations[sta_id].tid[tid].agg;
3540
3541                 iwl4965_tx_status_reply_tx(priv, agg,
3542                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3543
3544                 if ((tx_resp->frame_count == 1) &&
3545                     !iwl4965_is_tx_success(status)) {
3546                         /* TODO: send BAR */
3547                 }
3548
3549                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3550                         int freed;
3551                         index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3552                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3553                                            "%d index %d\n", scd_ssn , index);
3554                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3555                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3556
3557                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3558                             txq_id >= 0 && priv->mac80211_registered &&
3559                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3560                                 ieee80211_wake_queue(priv->hw, txq_id);
3561
3562                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3563                 }
3564         } else {
3565 #endif /* CONFIG_IWL4965_HT */
3566         tx_status = &(txq->txb[txq->q.read_ptr].status);
3567
3568         tx_status->retry_count = tx_resp->failure_frame;
3569         tx_status->queue_number = status;
3570         tx_status->queue_length = tx_resp->bt_kill_count;
3571         tx_status->queue_length |= tx_resp->failure_rts;
3572         tx_status->flags =
3573             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3574         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3575                                      &tx_status->control);
3576
3577         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3578                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3579                      status, le32_to_cpu(tx_resp->rate_n_flags),
3580                      tx_resp->failure_frame);
3581
3582         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3583         if (index != -1) {
3584                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3585 #ifdef CONFIG_IWL4965_HT
3586                 if (tid != MAX_TID_COUNT)
3587                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3588                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3589                         (txq_id >= 0) &&
3590                         priv->mac80211_registered)
3591                         ieee80211_wake_queue(priv->hw, txq_id);
3592                 if (tid != MAX_TID_COUNT)
3593                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3594 #endif
3595         }
3596 #ifdef CONFIG_IWL4965_HT
3597         }
3598 #endif /* CONFIG_IWL4965_HT */
3599
3600         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3601                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3602 }
3603
3604
3605 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3606                                struct iwl4965_rx_mem_buffer *rxb)
3607 {
3608         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3609         struct iwl4965_alive_resp *palive;
3610         struct delayed_work *pwork;
3611
3612         palive = &pkt->u.alive_frame;
3613
3614         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3615                        "0x%01X 0x%01X\n",
3616                        palive->is_valid, palive->ver_type,
3617                        palive->ver_subtype);
3618
3619         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3620                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3621                 memcpy(&priv->card_alive_init,
3622                        &pkt->u.alive_frame,
3623                        sizeof(struct iwl4965_init_alive_resp));
3624                 pwork = &priv->init_alive_start;
3625         } else {
3626                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3627                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3628                        sizeof(struct iwl4965_alive_resp));
3629                 pwork = &priv->alive_start;
3630         }
3631
3632         /* We delay the ALIVE response by 5ms to
3633          * give the HW RF Kill time to activate... */
3634         if (palive->is_valid == UCODE_VALID_OK)
3635                 queue_delayed_work(priv->workqueue, pwork,
3636                                    msecs_to_jiffies(5));
3637         else
3638                 IWL_WARNING("uCode did not respond OK.\n");
3639 }
3640
3641 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3642                                  struct iwl4965_rx_mem_buffer *rxb)
3643 {
3644         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3645
3646         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3647         return;
3648 }
3649
3650 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3651                                struct iwl4965_rx_mem_buffer *rxb)
3652 {
3653         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3654
3655         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3656                 "seq 0x%04X ser 0x%08X\n",
3657                 le32_to_cpu(pkt->u.err_resp.error_type),
3658                 get_cmd_string(pkt->u.err_resp.cmd_id),
3659                 pkt->u.err_resp.cmd_id,
3660                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3661                 le32_to_cpu(pkt->u.err_resp.error_info));
3662 }
3663
3664 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3665
3666 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3667 {
3668         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3669         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3670         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3671         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3672                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3673         rxon->channel = csa->channel;
3674         priv->staging_rxon.channel = csa->channel;
3675 }
3676
3677 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3678                                           struct iwl4965_rx_mem_buffer *rxb)
3679 {
3680 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3681         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3682         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3683
3684         if (!report->state) {
3685                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3686                           "Spectrum Measure Notification: Start\n");
3687                 return;
3688         }
3689
3690         memcpy(&priv->measure_report, report, sizeof(*report));
3691         priv->measurement_status |= MEASUREMENT_READY;
3692 #endif
3693 }
3694
3695 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3696                                   struct iwl4965_rx_mem_buffer *rxb)
3697 {
3698 #ifdef CONFIG_IWL4965_DEBUG
3699         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3700         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3701         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3702                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3703 #endif
3704 }
3705
3706 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3707                                              struct iwl4965_rx_mem_buffer *rxb)
3708 {
3709         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3710         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3711                         "notification for %s:\n",
3712                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3713         iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3714 }
3715
3716 static void iwl4965_bg_beacon_update(struct work_struct *work)
3717 {
3718         struct iwl4965_priv *priv =
3719                 container_of(work, struct iwl4965_priv, beacon_update);
3720         struct sk_buff *beacon;
3721
3722         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3723         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3724
3725         if (!beacon) {
3726                 IWL_ERROR("update beacon failed\n");
3727                 return;
3728         }
3729
3730         mutex_lock(&priv->mutex);
3731         /* new beacon skb is allocated every time; dispose previous.*/
3732         if (priv->ibss_beacon)
3733                 dev_kfree_skb(priv->ibss_beacon);
3734
3735         priv->ibss_beacon = beacon;
3736         mutex_unlock(&priv->mutex);
3737
3738         iwl4965_send_beacon_cmd(priv);
3739 }
3740
3741 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3742                                 struct iwl4965_rx_mem_buffer *rxb)
3743 {
3744 #ifdef CONFIG_IWL4965_DEBUG
3745         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3746         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3747         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3748
3749         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3750                 "tsf %d %d rate %d\n",
3751                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3752                 beacon->beacon_notify_hdr.failure_frame,
3753                 le32_to_cpu(beacon->ibss_mgr_status),
3754                 le32_to_cpu(beacon->high_tsf),
3755                 le32_to_cpu(beacon->low_tsf), rate);
3756 #endif
3757
3758         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3759             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3760                 queue_work(priv->workqueue, &priv->beacon_update);
3761 }
3762
3763 /* Service response to REPLY_SCAN_CMD (0x80) */
3764 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
3765                               struct iwl4965_rx_mem_buffer *rxb)
3766 {
3767 #ifdef CONFIG_IWL4965_DEBUG
3768         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3769         struct iwl4965_scanreq_notification *notif =
3770             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3771
3772         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3773 #endif
3774 }
3775
3776 /* Service SCAN_START_NOTIFICATION (0x82) */
3777 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
3778                                     struct iwl4965_rx_mem_buffer *rxb)
3779 {
3780         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3781         struct iwl4965_scanstart_notification *notif =
3782             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3783         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3784         IWL_DEBUG_SCAN("Scan start: "
3785                        "%d [802.11%s] "
3786                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3787                        notif->channel,
3788                        notif->band ? "bg" : "a",
3789                        notif->tsf_high,
3790                        notif->tsf_low, notif->status, notif->beacon_timer);
3791 }
3792
3793 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3794 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
3795                                       struct iwl4965_rx_mem_buffer *rxb)
3796 {
3797         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3798         struct iwl4965_scanresults_notification *notif =
3799             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3800
3801         IWL_DEBUG_SCAN("Scan ch.res: "
3802                        "%d [802.11%s] "
3803                        "(TSF: 0x%08X:%08X) - %d "
3804                        "elapsed=%lu usec (%dms since last)\n",
3805                        notif->channel,
3806                        notif->band ? "bg" : "a",
3807                        le32_to_cpu(notif->tsf_high),
3808                        le32_to_cpu(notif->tsf_low),
3809                        le32_to_cpu(notif->statistics[0]),
3810                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3811                        jiffies_to_msecs(elapsed_jiffies
3812                                         (priv->last_scan_jiffies, jiffies)));
3813
3814         priv->last_scan_jiffies = jiffies;
3815         priv->next_scan_jiffies = 0;
3816 }
3817
3818 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3819 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
3820                                        struct iwl4965_rx_mem_buffer *rxb)
3821 {
3822         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3823         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3824
3825         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3826                        scan_notif->scanned_channels,
3827                        scan_notif->tsf_low,
3828                        scan_notif->tsf_high, scan_notif->status);
3829
3830         /* The HW is no longer scanning */
3831         clear_bit(STATUS_SCAN_HW, &priv->status);
3832
3833         /* The scan completion notification came in, so kill that timer... */
3834         cancel_delayed_work(&priv->scan_check);
3835
3836         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3837                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3838                        jiffies_to_msecs(elapsed_jiffies
3839                                         (priv->scan_pass_start, jiffies)));
3840
3841         /* Remove this scanned band from the list
3842          * of pending bands to scan */
3843         priv->scan_bands--;
3844
3845         /* If a request to abort was given, or the scan did not succeed
3846          * then we reset the scan state machine and terminate,
3847          * re-queuing another scan if one has been requested */
3848         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3849                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3850                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3851         } else {
3852                 /* If there are more bands on this scan pass reschedule */
3853                 if (priv->scan_bands > 0)
3854                         goto reschedule;
3855         }
3856
3857         priv->last_scan_jiffies = jiffies;
3858         priv->next_scan_jiffies = 0;
3859         IWL_DEBUG_INFO("Setting scan to off\n");
3860
3861         clear_bit(STATUS_SCANNING, &priv->status);
3862
3863         IWL_DEBUG_INFO("Scan took %dms\n",
3864                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3865
3866         queue_work(priv->workqueue, &priv->scan_completed);
3867
3868         return;
3869
3870 reschedule:
3871         priv->scan_pass_start = jiffies;
3872         queue_work(priv->workqueue, &priv->request_scan);
3873 }
3874
3875 /* Handle notification from uCode that card's power state is changing
3876  * due to software, hardware, or critical temperature RFKILL */
3877 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
3878                                     struct iwl4965_rx_mem_buffer *rxb)
3879 {
3880         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3881         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3882         unsigned long status = priv->status;
3883
3884         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3885                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3886                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3887
3888         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3889                      RF_CARD_DISABLED)) {
3890
3891                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3892                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3893
3894                 if (!iwl4965_grab_nic_access(priv)) {
3895                         iwl4965_write_direct32(
3896                                 priv, HBUS_TARG_MBX_C,
3897                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3898
3899                         iwl4965_release_nic_access(priv);
3900                 }
3901
3902                 if (!(flags & RXON_CARD_DISABLED)) {
3903                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3904                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3905                         if (!iwl4965_grab_nic_access(priv)) {
3906                                 iwl4965_write_direct32(
3907                                         priv, HBUS_TARG_MBX_C,
3908                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3909
3910                                 iwl4965_release_nic_access(priv);
3911                         }
3912                 }
3913
3914                 if (flags & RF_CARD_DISABLED) {
3915                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3916                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3917                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3918                         if (!iwl4965_grab_nic_access(priv))
3919                                 iwl4965_release_nic_access(priv);
3920                 }
3921         }
3922
3923         if (flags & HW_CARD_DISABLED)
3924                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3925         else
3926                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3927
3928
3929         if (flags & SW_CARD_DISABLED)
3930                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3931         else
3932                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3933
3934         if (!(flags & RXON_CARD_DISABLED))
3935                 iwl4965_scan_cancel(priv);
3936
3937         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3938              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3939             (test_bit(STATUS_RF_KILL_SW, &status) !=
3940              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3941                 queue_work(priv->workqueue, &priv->rf_kill);
3942         else
3943                 wake_up_interruptible(&priv->wait_command_queue);
3944 }
3945
3946 /**
3947  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3948  *
3949  * Setup the RX handlers for each of the reply types sent from the uCode
3950  * to the host.
3951  *
3952  * This function chains into the hardware specific files for them to setup
3953  * any hardware specific handlers as well.
3954  */
3955 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
3956 {
3957         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3958         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3959         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3960         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3961         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3962             iwl4965_rx_spectrum_measure_notif;
3963         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3964         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3965             iwl4965_rx_pm_debug_statistics_notif;
3966         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3967
3968         /*
3969          * The same handler is used for both the REPLY to a discrete
3970          * statistics request from the host as well as for the periodic
3971          * statistics notifications (after received beacons) from the uCode.
3972          */
3973         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3974         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3975
3976         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3977         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3978         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3979             iwl4965_rx_scan_results_notif;
3980         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3981             iwl4965_rx_scan_complete_notif;
3982         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3983         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3984
3985         /* Set up hardware specific Rx handlers */
3986         iwl4965_hw_rx_handler_setup(priv);
3987 }
3988
3989 /**
3990  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3991  * @rxb: Rx buffer to reclaim
3992  *
3993  * If an Rx buffer has an async callback associated with it the callback
3994  * will be executed.  The attached skb (if present) will only be freed
3995  * if the callback returns 1
3996  */
3997 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
3998                                 struct iwl4965_rx_mem_buffer *rxb)
3999 {
4000         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4001         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4002         int txq_id = SEQ_TO_QUEUE(sequence);
4003         int index = SEQ_TO_INDEX(sequence);
4004         int huge = sequence & SEQ_HUGE_FRAME;
4005         int cmd_index;
4006         struct iwl4965_cmd *cmd;
4007
4008         /* If a Tx command is being handled and it isn't in the actual
4009          * command queue then there a command routing bug has been introduced
4010          * in the queue management code. */
4011         if (txq_id != IWL_CMD_QUEUE_NUM)
4012                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4013                           txq_id, pkt->hdr.cmd);
4014         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4015
4016         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4017         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4018
4019         /* Input error checking is done when commands are added to queue. */
4020         if (cmd->meta.flags & CMD_WANT_SKB) {
4021                 cmd->meta.source->u.skb = rxb->skb;
4022                 rxb->skb = NULL;
4023         } else if (cmd->meta.u.callback &&
4024                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
4025                 rxb->skb = NULL;
4026
4027         iwl4965_tx_queue_reclaim(priv, txq_id, index);
4028
4029         if (!(cmd->meta.flags & CMD_ASYNC)) {
4030                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4031                 wake_up_interruptible(&priv->wait_command_queue);
4032         }
4033 }
4034
4035 /************************** RX-FUNCTIONS ****************************/
4036 /*
4037  * Rx theory of operation
4038  *
4039  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4040  * each of which point to Receive Buffers to be filled by 4965.  These get
4041  * used not only for Rx frames, but for any command response or notification
4042  * from the 4965.  The driver and 4965 manage the Rx buffers by means
4043  * of indexes into the circular buffer.
4044  *
4045  * Rx Queue Indexes
4046  * The host/firmware share two index registers for managing the Rx buffers.
4047  *
4048  * The READ index maps to the first position that the firmware may be writing
4049  * to -- the driver can read up to (but not including) this position and get
4050  * good data.
4051  * The READ index is managed by the firmware once the card is enabled.
4052  *
4053  * The WRITE index maps to the last position the driver has read from -- the
4054  * position preceding WRITE is the last slot the firmware can place a packet.
4055  *
4056  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4057  * WRITE = READ.
4058  *
4059  * During initialization, the host sets up the READ queue position to the first
4060  * INDEX position, and WRITE to the last (READ - 1 wrapped)
4061  *
4062  * When the firmware places a packet in a buffer, it will advance the READ index
4063  * and fire the RX interrupt.  The driver can then query the READ index and
4064  * process as many packets as possible, moving the WRITE index forward as it
4065  * resets the Rx queue buffers with new memory.
4066  *
4067  * The management in the driver is as follows:
4068  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
4069  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4070  *   to replenish the iwl->rxq->rx_free.
4071  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4072  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
4073  *   'processed' and 'read' driver indexes as well)
4074  * + A received packet is processed and handed to the kernel network stack,
4075  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
4076  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4077  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4078  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
4079  *   were enough free buffers and RX_STALLED is set it is cleared.
4080  *
4081  *
4082  * Driver sequence:
4083  *
4084  * iwl4965_rx_queue_alloc()   Allocates rx_free
4085  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
4086  *                            iwl4965_rx_queue_restock
4087  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4088  *                            queue, updates firmware pointers, and updates
4089  *                            the WRITE index.  If insufficient rx_free buffers
4090  *                            are available, schedules iwl4965_rx_replenish
4091  *
4092  * -- enable interrupts --
4093  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
4094  *                            READ INDEX, detaching the SKB from the pool.
4095  *                            Moves the packet buffer from queue to rx_used.
4096  *                            Calls iwl4965_rx_queue_restock to refill any empty
4097  *                            slots.
4098  * ...
4099  *
4100  */
4101
4102 /**
4103  * iwl4965_rx_queue_space - Return number of free slots available in queue.
4104  */
4105 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4106 {
4107         int s = q->read - q->write;
4108         if (s <= 0)
4109                 s += RX_QUEUE_SIZE;
4110         /* keep some buffer to not confuse full and empty queue */
4111         s -= 2;
4112         if (s < 0)
4113                 s = 0;
4114         return s;
4115 }
4116
4117 /**
4118  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4119  */
4120 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4121 {
4122         u32 reg = 0;
4123         int rc = 0;
4124         unsigned long flags;
4125
4126         spin_lock_irqsave(&q->lock, flags);
4127
4128         if (q->need_update == 0)
4129                 goto exit_unlock;
4130
4131         /* If power-saving is in use, make sure device is awake */
4132         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4133                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4134
4135                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4136                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4137                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4138                         goto exit_unlock;
4139                 }
4140
4141                 rc = iwl4965_grab_nic_access(priv);
4142                 if (rc)
4143                         goto exit_unlock;
4144
4145                 /* Device expects a multiple of 8 */
4146                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4147                                      q->write & ~0x7);
4148                 iwl4965_release_nic_access(priv);
4149
4150         /* Else device is assumed to be awake */
4151         } else
4152                 /* Device expects a multiple of 8 */
4153                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4154
4155
4156         q->need_update = 0;
4157
4158  exit_unlock:
4159         spin_unlock_irqrestore(&q->lock, flags);
4160         return rc;
4161 }
4162
4163 /**
4164  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4165  */
4166 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4167                                           dma_addr_t dma_addr)
4168 {
4169         return cpu_to_le32((u32)(dma_addr >> 8));
4170 }
4171
4172
4173 /**
4174  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4175  *
4176  * If there are slots in the RX queue that need to be restocked,
4177  * and we have free pre-allocated buffers, fill the ranks as much
4178  * as we can, pulling from rx_free.
4179  *
4180  * This moves the 'write' index forward to catch up with 'processed', and
4181  * also updates the memory address in the firmware to reference the new
4182  * target buffer.
4183  */
4184 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4185 {
4186         struct iwl4965_rx_queue *rxq = &priv->rxq;
4187         struct list_head *element;
4188         struct iwl4965_rx_mem_buffer *rxb;
4189         unsigned long flags;
4190         int write, rc;
4191
4192         spin_lock_irqsave(&rxq->lock, flags);
4193         write = rxq->write & ~0x7;
4194         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4195                 /* Get next free Rx buffer, remove from free list */
4196                 element = rxq->rx_free.next;
4197                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4198                 list_del(element);
4199
4200                 /* Point to Rx buffer via next RBD in circular buffer */
4201                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4202                 rxq->queue[rxq->write] = rxb;
4203                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4204                 rxq->free_count--;
4205         }
4206         spin_unlock_irqrestore(&rxq->lock, flags);
4207         /* If the pre-allocated buffer pool is dropping low, schedule to
4208          * refill it */
4209         if (rxq->free_count <= RX_LOW_WATERMARK)
4210                 queue_work(priv->workqueue, &priv->rx_replenish);
4211
4212
4213         /* If we've added more space for the firmware to place data, tell it.
4214          * Increment device's write pointer in multiples of 8. */
4215         if ((write != (rxq->write & ~0x7))
4216             || (abs(rxq->write - rxq->read) > 7)) {
4217                 spin_lock_irqsave(&rxq->lock, flags);
4218                 rxq->need_update = 1;
4219                 spin_unlock_irqrestore(&rxq->lock, flags);
4220                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4221                 if (rc)
4222                         return rc;
4223         }
4224
4225         return 0;
4226 }
4227
4228 /**
4229  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4230  *
4231  * When moving to rx_free an SKB is allocated for the slot.
4232  *
4233  * Also restock the Rx queue via iwl4965_rx_queue_restock.
4234  * This is called as a scheduled work item (except for during initialization)
4235  */
4236 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4237 {
4238         struct iwl4965_rx_queue *rxq = &priv->rxq;
4239         struct list_head *element;
4240         struct iwl4965_rx_mem_buffer *rxb;
4241         unsigned long flags;
4242         spin_lock_irqsave(&rxq->lock, flags);
4243         while (!list_empty(&rxq->rx_used)) {
4244                 element = rxq->rx_used.next;
4245                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4246
4247                 /* Alloc a new receive buffer */
4248                 rxb->skb =
4249                     alloc_skb(priv->hw_setting.rx_buf_size,
4250                                 __GFP_NOWARN | GFP_ATOMIC);
4251                 if (!rxb->skb) {
4252                         if (net_ratelimit())
4253                                 printk(KERN_CRIT DRV_NAME
4254                                        ": Can not allocate SKB buffers\n");
4255                         /* We don't reschedule replenish work here -- we will
4256                          * call the restock method and if it still needs
4257                          * more buffers it will schedule replenish */
4258                         break;
4259                 }
4260                 priv->alloc_rxb_skb++;
4261                 list_del(element);
4262
4263                 /* Get physical address of RB/SKB */
4264                 rxb->dma_addr =
4265                     pci_map_single(priv->pci_dev, rxb->skb->data,
4266                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4267                 list_add_tail(&rxb->list, &rxq->rx_free);
4268                 rxq->free_count++;
4269         }
4270         spin_unlock_irqrestore(&rxq->lock, flags);
4271 }
4272
4273 /*
4274  * this should be called while priv->lock is locked
4275 */
4276 static void __iwl4965_rx_replenish(void *data)
4277 {
4278         struct iwl4965_priv *priv = data;
4279
4280         iwl4965_rx_allocate(priv);
4281         iwl4965_rx_queue_restock(priv);
4282 }
4283
4284
4285 void iwl4965_rx_replenish(void *data)
4286 {
4287         struct iwl4965_priv *priv = data;
4288         unsigned long flags;
4289
4290         iwl4965_rx_allocate(priv);
4291
4292         spin_lock_irqsave(&priv->lock, flags);
4293         iwl4965_rx_queue_restock(priv);
4294         spin_unlock_irqrestore(&priv->lock, flags);
4295 }
4296
4297 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4298  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4299  * This free routine walks the list of POOL entries and if SKB is set to
4300  * non NULL it is unmapped and freed
4301  */
4302 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4303 {
4304         int i;
4305         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4306                 if (rxq->pool[i].skb != NULL) {
4307                         pci_unmap_single(priv->pci_dev,
4308                                          rxq->pool[i].dma_addr,
4309                                          priv->hw_setting.rx_buf_size,
4310                                          PCI_DMA_FROMDEVICE);
4311                         dev_kfree_skb(rxq->pool[i].skb);
4312                 }
4313         }
4314
4315         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4316                             rxq->dma_addr);
4317         rxq->bd = NULL;
4318 }
4319
4320 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4321 {
4322         struct iwl4965_rx_queue *rxq = &priv->rxq;
4323         struct pci_dev *dev = priv->pci_dev;
4324         int i;
4325
4326         spin_lock_init(&rxq->lock);
4327         INIT_LIST_HEAD(&rxq->rx_free);
4328         INIT_LIST_HEAD(&rxq->rx_used);
4329
4330         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4331         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4332         if (!rxq->bd)
4333                 return -ENOMEM;
4334
4335         /* Fill the rx_used queue with _all_ of the Rx buffers */
4336         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4337                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4338
4339         /* Set us so that we have processed and used all buffers, but have
4340          * not restocked the Rx queue with fresh buffers */
4341         rxq->read = rxq->write = 0;
4342         rxq->free_count = 0;
4343         rxq->need_update = 0;
4344         return 0;
4345 }
4346
4347 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4348 {
4349         unsigned long flags;
4350         int i;
4351         spin_lock_irqsave(&rxq->lock, flags);
4352         INIT_LIST_HEAD(&rxq->rx_free);
4353         INIT_LIST_HEAD(&rxq->rx_used);
4354         /* Fill the rx_used queue with _all_ of the Rx buffers */
4355         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4356                 /* In the reset function, these buffers may have been allocated
4357                  * to an SKB, so we need to unmap and free potential storage */
4358                 if (rxq->pool[i].skb != NULL) {
4359                         pci_unmap_single(priv->pci_dev,
4360                                          rxq->pool[i].dma_addr,
4361                                          priv->hw_setting.rx_buf_size,
4362                                          PCI_DMA_FROMDEVICE);
4363                         priv->alloc_rxb_skb--;
4364                         dev_kfree_skb(rxq->pool[i].skb);
4365                         rxq->pool[i].skb = NULL;
4366                 }
4367                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4368         }
4369
4370         /* Set us so that we have processed and used all buffers, but have
4371          * not restocked the Rx queue with fresh buffers */
4372         rxq->read = rxq->write = 0;
4373         rxq->free_count = 0;
4374         spin_unlock_irqrestore(&rxq->lock, flags);
4375 }
4376
4377 /* Convert linear signal-to-noise ratio into dB */
4378 static u8 ratio2dB[100] = {
4379 /*       0   1   2   3   4   5   6   7   8   9 */
4380          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4381         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4382         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4383         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4384         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4385         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4386         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4387         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4388         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4389         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4390 };
4391
4392 /* Calculates a relative dB value from a ratio of linear
4393  *   (i.e. not dB) signal levels.
4394  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4395 int iwl4965_calc_db_from_ratio(int sig_ratio)
4396 {
4397         /* 1000:1 or higher just report as 60 dB */
4398         if (sig_ratio >= 1000)
4399                 return 60;
4400
4401         /* 100:1 or higher, divide by 10 and use table,
4402          *   add 20 dB to make up for divide by 10 */
4403         if (sig_ratio >= 100)
4404                 return (20 + (int)ratio2dB[sig_ratio/10]);
4405
4406         /* We shouldn't see this */
4407         if (sig_ratio < 1)
4408                 return 0;
4409
4410         /* Use table for ratios 1:1 - 99:1 */
4411         return (int)ratio2dB[sig_ratio];
4412 }
4413
4414 #define PERFECT_RSSI (-20) /* dBm */
4415 #define WORST_RSSI (-95)   /* dBm */
4416 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4417
4418 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4419  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4420  *   about formulas used below. */
4421 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4422 {
4423         int sig_qual;
4424         int degradation = PERFECT_RSSI - rssi_dbm;
4425
4426         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4427          * as indicator; formula is (signal dbm - noise dbm).
4428          * SNR at or above 40 is a great signal (100%).
4429          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4430          * Weakest usable signal is usually 10 - 15 dB SNR. */
4431         if (noise_dbm) {
4432                 if (rssi_dbm - noise_dbm >= 40)
4433                         return 100;
4434                 else if (rssi_dbm < noise_dbm)
4435                         return 0;
4436                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4437
4438         /* Else use just the signal level.
4439          * This formula is a least squares fit of data points collected and
4440          *   compared with a reference system that had a percentage (%) display
4441          *   for signal quality. */
4442         } else
4443                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4444                             (15 * RSSI_RANGE + 62 * degradation)) /
4445                            (RSSI_RANGE * RSSI_RANGE);
4446
4447         if (sig_qual > 100)
4448                 sig_qual = 100;
4449         else if (sig_qual < 1)
4450                 sig_qual = 0;
4451
4452         return sig_qual;
4453 }
4454
4455 /**
4456  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4457  *
4458  * Uses the priv->rx_handlers callback function array to invoke
4459  * the appropriate handlers, including command responses,
4460  * frame-received notifications, and other notifications.
4461  */
4462 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4463 {
4464         struct iwl4965_rx_mem_buffer *rxb;
4465         struct iwl4965_rx_packet *pkt;
4466         struct iwl4965_rx_queue *rxq = &priv->rxq;
4467         u32 r, i;
4468         int reclaim;
4469         unsigned long flags;
4470         u8 fill_rx = 0;
4471         u32 count = 8;
4472
4473         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4474          * buffer that the driver may process (last buffer filled by ucode). */
4475         r = iwl4965_hw_get_rx_read(priv);
4476         i = rxq->read;
4477
4478         /* Rx interrupt, but nothing sent from uCode */
4479         if (i == r)
4480                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4481
4482         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4483                 fill_rx = 1;
4484
4485         while (i != r) {
4486                 rxb = rxq->queue[i];
4487
4488                 /* If an RXB doesn't have a Rx queue slot associated with it,
4489                  * then a bug has been introduced in the queue refilling
4490                  * routines -- catch it here */
4491                 BUG_ON(rxb == NULL);
4492
4493                 rxq->queue[i] = NULL;
4494
4495                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4496                                             priv->hw_setting.rx_buf_size,
4497                                             PCI_DMA_FROMDEVICE);
4498                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4499
4500                 /* Reclaim a command buffer only if this packet is a response
4501                  *   to a (driver-originated) command.
4502                  * If the packet (e.g. Rx frame) originated from uCode,
4503                  *   there is no command buffer to reclaim.
4504                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4505                  *   but apparently a few don't get set; catch them here. */
4506                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4507                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4508                         (pkt->hdr.cmd != REPLY_4965_RX) &&
4509                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4510                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4511                         (pkt->hdr.cmd != REPLY_TX);
4512
4513                 /* Based on type of command response or notification,
4514                  *   handle those that need handling via function in
4515                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4516                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4517                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4518                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4519                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4520                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4521                 } else {
4522                         /* No handling needed */
4523                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4524                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4525                                 r, i, get_cmd_string(pkt->hdr.cmd),
4526                                 pkt->hdr.cmd);
4527                 }
4528
4529                 if (reclaim) {
4530                         /* Invoke any callbacks, transfer the skb to caller, and
4531                          * fire off the (possibly) blocking iwl4965_send_cmd()
4532                          * as we reclaim the driver command queue */
4533                         if (rxb && rxb->skb)
4534                                 iwl4965_tx_cmd_complete(priv, rxb);
4535                         else
4536                                 IWL_WARNING("Claim null rxb?\n");
4537                 }
4538
4539                 /* For now we just don't re-use anything.  We can tweak this
4540                  * later to try and re-use notification packets and SKBs that
4541                  * fail to Rx correctly */
4542                 if (rxb->skb != NULL) {
4543                         priv->alloc_rxb_skb--;
4544                         dev_kfree_skb_any(rxb->skb);
4545                         rxb->skb = NULL;
4546                 }
4547
4548                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4549                                  priv->hw_setting.rx_buf_size,
4550                                  PCI_DMA_FROMDEVICE);
4551                 spin_lock_irqsave(&rxq->lock, flags);
4552                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4553                 spin_unlock_irqrestore(&rxq->lock, flags);
4554                 i = (i + 1) & RX_QUEUE_MASK;
4555                 /* If there are a lot of unused frames,
4556                  * restock the Rx queue so ucode wont assert. */
4557                 if (fill_rx) {
4558                         count++;
4559                         if (count >= 8) {
4560                                 priv->rxq.read = i;
4561                                 __iwl4965_rx_replenish(priv);
4562                                 count = 0;
4563                         }
4564                 }
4565         }
4566
4567         /* Backtrack one entry */
4568         priv->rxq.read = i;
4569         iwl4965_rx_queue_restock(priv);
4570 }
4571
4572 /**
4573  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4574  */
4575 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4576                                   struct iwl4965_tx_queue *txq)
4577 {
4578         u32 reg = 0;
4579         int rc = 0;
4580         int txq_id = txq->q.id;
4581
4582         if (txq->need_update == 0)
4583                 return rc;
4584
4585         /* if we're trying to save power */
4586         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4587                 /* wake up nic if it's powered down ...
4588                  * uCode will wake up, and interrupt us again, so next
4589                  * time we'll skip this part. */
4590                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4591
4592                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4593                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4594                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4595                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4596                         return rc;
4597                 }
4598
4599                 /* restore this queue's parameters in nic hardware. */
4600                 rc = iwl4965_grab_nic_access(priv);
4601                 if (rc)
4602                         return rc;
4603                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4604                                      txq->q.write_ptr | (txq_id << 8));
4605                 iwl4965_release_nic_access(priv);
4606
4607         /* else not in power-save mode, uCode will never sleep when we're
4608          * trying to tx (during RFKILL, we're not trying to tx). */
4609         } else
4610                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4611                             txq->q.write_ptr | (txq_id << 8));
4612
4613         txq->need_update = 0;
4614
4615         return rc;
4616 }
4617
4618 #ifdef CONFIG_IWL4965_DEBUG
4619 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4620 {
4621         DECLARE_MAC_BUF(mac);
4622
4623         IWL_DEBUG_RADIO("RX CONFIG:\n");
4624         iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4625         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4626         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4627         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4628                         le32_to_cpu(rxon->filter_flags));
4629         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4630         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4631                         rxon->ofdm_basic_rates);
4632         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4633         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4634                         print_mac(mac, rxon->node_addr));
4635         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4636                         print_mac(mac, rxon->bssid_addr));
4637         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4638 }
4639 #endif
4640
4641 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4642 {
4643         IWL_DEBUG_ISR("Enabling interrupts\n");
4644         set_bit(STATUS_INT_ENABLED, &priv->status);
4645         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4646 }
4647
4648 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4649 {
4650         clear_bit(STATUS_INT_ENABLED, &priv->status);
4651
4652         /* disable interrupts from uCode/NIC to host */
4653         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4654
4655         /* acknowledge/clear/reset any interrupts still pending
4656          * from uCode or flow handler (Rx/Tx DMA) */
4657         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4658         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4659         IWL_DEBUG_ISR("Disabled interrupts\n");
4660 }
4661
4662 static const char *desc_lookup(int i)
4663 {
4664         switch (i) {
4665         case 1:
4666                 return "FAIL";
4667         case 2:
4668                 return "BAD_PARAM";
4669         case 3:
4670                 return "BAD_CHECKSUM";
4671         case 4:
4672                 return "NMI_INTERRUPT";
4673         case 5:
4674                 return "SYSASSERT";
4675         case 6:
4676                 return "FATAL_ERROR";
4677         }
4678
4679         return "UNKNOWN";
4680 }
4681
4682 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4683 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4684
4685 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4686 {
4687         u32 data2, line;
4688         u32 desc, time, count, base, data1;
4689         u32 blink1, blink2, ilink1, ilink2;
4690         int rc;
4691
4692         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4693
4694         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4695                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4696                 return;
4697         }
4698
4699         rc = iwl4965_grab_nic_access(priv);
4700         if (rc) {
4701                 IWL_WARNING("Can not read from adapter at this time.\n");
4702                 return;
4703         }
4704
4705         count = iwl4965_read_targ_mem(priv, base);
4706
4707         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4708                 IWL_ERROR("Start IWL Error Log Dump:\n");
4709                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4710         }
4711
4712         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4713         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4714         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4715         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4716         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4717         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4718         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4719         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4720         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4721
4722         IWL_ERROR("Desc               Time       "
4723                   "data1      data2      line\n");
4724         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4725                   desc_lookup(desc), desc, time, data1, data2, line);
4726         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4727         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4728                   ilink1, ilink2);
4729
4730         iwl4965_release_nic_access(priv);
4731 }
4732
4733 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4734
4735 /**
4736  * iwl4965_print_event_log - Dump error event log to syslog
4737  *
4738  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4739  */
4740 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4741                                 u32 num_events, u32 mode)
4742 {
4743         u32 i;
4744         u32 base;       /* SRAM byte address of event log header */
4745         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4746         u32 ptr;        /* SRAM byte address of log data */
4747         u32 ev, time, data; /* event log data */
4748
4749         if (num_events == 0)
4750                 return;
4751
4752         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4753
4754         if (mode == 0)
4755                 event_size = 2 * sizeof(u32);
4756         else
4757                 event_size = 3 * sizeof(u32);
4758
4759         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4760
4761         /* "time" is actually "data" for mode 0 (no timestamp).
4762          * place event id # at far right for easier visual parsing. */
4763         for (i = 0; i < num_events; i++) {
4764                 ev = iwl4965_read_targ_mem(priv, ptr);
4765                 ptr += sizeof(u32);
4766                 time = iwl4965_read_targ_mem(priv, ptr);
4767                 ptr += sizeof(u32);
4768                 if (mode == 0)
4769                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4770                 else {
4771                         data = iwl4965_read_targ_mem(priv, ptr);
4772                         ptr += sizeof(u32);
4773                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4774                 }
4775         }
4776 }
4777
4778 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4779 {
4780         int rc;
4781         u32 base;       /* SRAM byte address of event log header */
4782         u32 capacity;   /* event log capacity in # entries */
4783         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4784         u32 num_wraps;  /* # times uCode wrapped to top of log */
4785         u32 next_entry; /* index of next entry to be written by uCode */
4786         u32 size;       /* # entries that we'll print */
4787
4788         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4789         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4790                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4791                 return;
4792         }
4793
4794         rc = iwl4965_grab_nic_access(priv);
4795         if (rc) {
4796                 IWL_WARNING("Can not read from adapter at this time.\n");
4797                 return;
4798         }
4799
4800         /* event log header */
4801         capacity = iwl4965_read_targ_mem(priv, base);
4802         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4803         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4804         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4805
4806         size = num_wraps ? capacity : next_entry;
4807
4808         /* bail out if nothing in log */
4809         if (size == 0) {
4810                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4811                 iwl4965_release_nic_access(priv);
4812                 return;
4813         }
4814
4815         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4816                   size, num_wraps);
4817
4818         /* if uCode has wrapped back to top of log, start at the oldest entry,
4819          * i.e the next one that uCode would fill. */
4820         if (num_wraps)
4821                 iwl4965_print_event_log(priv, next_entry,
4822                                     capacity - next_entry, mode);
4823
4824         /* (then/else) start at top of log */
4825         iwl4965_print_event_log(priv, 0, next_entry, mode);
4826
4827         iwl4965_release_nic_access(priv);
4828 }
4829
4830 /**
4831  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4832  */
4833 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
4834 {
4835         /* Set the FW error flag -- cleared on iwl4965_down */
4836         set_bit(STATUS_FW_ERROR, &priv->status);
4837
4838         /* Cancel currently queued command. */
4839         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4840
4841 #ifdef CONFIG_IWL4965_DEBUG
4842         if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
4843                 iwl4965_dump_nic_error_log(priv);
4844                 iwl4965_dump_nic_event_log(priv);
4845                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4846         }
4847 #endif
4848
4849         wake_up_interruptible(&priv->wait_command_queue);
4850
4851         /* Keep the restart process from trying to send host
4852          * commands by clearing the INIT status bit */
4853         clear_bit(STATUS_READY, &priv->status);
4854
4855         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4856                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4857                           "Restarting adapter due to uCode error.\n");
4858
4859                 if (iwl4965_is_associated(priv)) {
4860                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4861                                sizeof(priv->recovery_rxon));
4862                         priv->error_recovering = 1;
4863                 }
4864                 queue_work(priv->workqueue, &priv->restart);
4865         }
4866 }
4867
4868 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
4869 {
4870         unsigned long flags;
4871
4872         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4873                sizeof(priv->staging_rxon));
4874         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4875         iwl4965_commit_rxon(priv);
4876
4877         iwl4965_rxon_add_station(priv, priv->bssid, 1);
4878
4879         spin_lock_irqsave(&priv->lock, flags);
4880         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4881         priv->error_recovering = 0;
4882         spin_unlock_irqrestore(&priv->lock, flags);
4883 }
4884
4885 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
4886 {
4887         u32 inta, handled = 0;
4888         u32 inta_fh;
4889         unsigned long flags;
4890 #ifdef CONFIG_IWL4965_DEBUG
4891         u32 inta_mask;
4892 #endif
4893
4894         spin_lock_irqsave(&priv->lock, flags);
4895
4896         /* Ack/clear/reset pending uCode interrupts.
4897          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4898          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4899         inta = iwl4965_read32(priv, CSR_INT);
4900         iwl4965_write32(priv, CSR_INT, inta);
4901
4902         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4903          * Any new interrupts that happen after this, either while we're
4904          * in this tasklet, or later, will show up in next ISR/tasklet. */
4905         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4906         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4907
4908 #ifdef CONFIG_IWL4965_DEBUG
4909         if (iwl4965_debug_level & IWL_DL_ISR) {
4910                 /* just for debug */
4911                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4912                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4913                               inta, inta_mask, inta_fh);
4914         }
4915 #endif
4916
4917         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4918          * atomic, make sure that inta covers all the interrupts that
4919          * we've discovered, even if FH interrupt came in just after
4920          * reading CSR_INT. */
4921         if (inta_fh & CSR_FH_INT_RX_MASK)
4922                 inta |= CSR_INT_BIT_FH_RX;
4923         if (inta_fh & CSR_FH_INT_TX_MASK)
4924                 inta |= CSR_INT_BIT_FH_TX;
4925
4926         /* Now service all interrupt bits discovered above. */
4927         if (inta & CSR_INT_BIT_HW_ERR) {
4928                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4929
4930                 /* Tell the device to stop sending interrupts */
4931                 iwl4965_disable_interrupts(priv);
4932
4933                 iwl4965_irq_handle_error(priv);
4934
4935                 handled |= CSR_INT_BIT_HW_ERR;
4936
4937                 spin_unlock_irqrestore(&priv->lock, flags);
4938
4939                 return;
4940         }
4941
4942 #ifdef CONFIG_IWL4965_DEBUG
4943         if (iwl4965_debug_level & (IWL_DL_ISR)) {
4944                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4945                 if (inta & CSR_INT_BIT_SCD)
4946                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4947                                       "the frame/frames.\n");
4948
4949                 /* Alive notification via Rx interrupt will do the real work */
4950                 if (inta & CSR_INT_BIT_ALIVE)
4951                         IWL_DEBUG_ISR("Alive interrupt\n");
4952         }
4953 #endif
4954         /* Safely ignore these bits for debug checks below */
4955         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4956
4957         /* HW RF KILL switch toggled */
4958         if (inta & CSR_INT_BIT_RF_KILL) {
4959                 int hw_rf_kill = 0;
4960                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
4961                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4962                         hw_rf_kill = 1;
4963
4964                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4965                                 "RF_KILL bit toggled to %s.\n",
4966                                 hw_rf_kill ? "disable radio":"enable radio");
4967
4968                 /* Queue restart only if RF_KILL switch was set to "kill"
4969                  *   when we loaded driver, and is now set to "enable".
4970                  * After we're Alive, RF_KILL gets handled by
4971                  *   iwl4965_rx_card_state_notif() */
4972                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4973                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4974                         queue_work(priv->workqueue, &priv->restart);
4975                 }
4976
4977                 handled |= CSR_INT_BIT_RF_KILL;
4978         }
4979
4980         /* Chip got too hot and stopped itself */
4981         if (inta & CSR_INT_BIT_CT_KILL) {
4982                 IWL_ERROR("Microcode CT kill error detected.\n");
4983                 handled |= CSR_INT_BIT_CT_KILL;
4984         }
4985
4986         /* Error detected by uCode */
4987         if (inta & CSR_INT_BIT_SW_ERR) {
4988                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4989                           inta);
4990                 iwl4965_irq_handle_error(priv);
4991                 handled |= CSR_INT_BIT_SW_ERR;
4992         }
4993
4994         /* uCode wakes up after power-down sleep */
4995         if (inta & CSR_INT_BIT_WAKEUP) {
4996                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4997                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4998                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4999                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5000                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5001                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5002                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5003                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5004
5005                 handled |= CSR_INT_BIT_WAKEUP;
5006         }
5007
5008         /* All uCode command responses, including Tx command responses,
5009          * Rx "responses" (frame-received notification), and other
5010          * notifications from uCode come through here*/
5011         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5012                 iwl4965_rx_handle(priv);
5013                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5014         }
5015
5016         if (inta & CSR_INT_BIT_FH_TX) {
5017                 IWL_DEBUG_ISR("Tx interrupt\n");
5018                 handled |= CSR_INT_BIT_FH_TX;
5019         }
5020
5021         if (inta & ~handled)
5022                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5023
5024         if (inta & ~CSR_INI_SET_MASK) {
5025                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5026                          inta & ~CSR_INI_SET_MASK);
5027                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
5028         }
5029
5030         /* Re-enable all interrupts */
5031         iwl4965_enable_interrupts(priv);
5032
5033 #ifdef CONFIG_IWL4965_DEBUG
5034         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5035                 inta = iwl4965_read32(priv, CSR_INT);
5036                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5037                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5038                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5039                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5040         }
5041 #endif
5042         spin_unlock_irqrestore(&priv->lock, flags);
5043 }
5044
5045 static irqreturn_t iwl4965_isr(int irq, void *data)
5046 {
5047         struct iwl4965_priv *priv = data;
5048         u32 inta, inta_mask;
5049         u32 inta_fh;
5050         if (!priv)
5051                 return IRQ_NONE;
5052
5053         spin_lock(&priv->lock);
5054
5055         /* Disable (but don't clear!) interrupts here to avoid
5056          *    back-to-back ISRs and sporadic interrupts from our NIC.
5057          * If we have something to service, the tasklet will re-enable ints.
5058          * If we *don't* have something, we'll re-enable before leaving here. */
5059         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
5060         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5061
5062         /* Discover which interrupts are active/pending */
5063         inta = iwl4965_read32(priv, CSR_INT);
5064         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5065
5066         /* Ignore interrupt if there's nothing in NIC to service.
5067          * This may be due to IRQ shared with another device,
5068          * or due to sporadic interrupts thrown from our NIC. */
5069         if (!inta && !inta_fh) {
5070                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5071                 goto none;
5072         }
5073
5074         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5075                 /* Hardware disappeared. It might have already raised
5076                  * an interrupt */
5077                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5078                 goto unplugged;
5079         }
5080
5081         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5082                       inta, inta_mask, inta_fh);
5083
5084         inta &= ~CSR_INT_BIT_SCD;
5085
5086         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5087         if (likely(inta || inta_fh))
5088                 tasklet_schedule(&priv->irq_tasklet);
5089
5090  unplugged:
5091         spin_unlock(&priv->lock);
5092         return IRQ_HANDLED;
5093
5094  none:
5095         /* re-enable interrupts here since we don't have anything to service. */
5096         iwl4965_enable_interrupts(priv);
5097         spin_unlock(&priv->lock);
5098         return IRQ_NONE;
5099 }
5100
5101 /************************** EEPROM BANDS ****************************
5102  *
5103  * The iwl4965_eeprom_band definitions below provide the mapping from the
5104  * EEPROM contents to the specific channel number supported for each
5105  * band.
5106  *
5107  * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5108  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5109  * The specific geography and calibration information for that channel
5110  * is contained in the eeprom map itself.
5111  *
5112  * During init, we copy the eeprom information and channel map
5113  * information into priv->channel_info_24/52 and priv->channel_map_24/52
5114  *
5115  * channel_map_24/52 provides the index in the channel_info array for a
5116  * given channel.  We have to have two separate maps as there is channel
5117  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5118  * band_2
5119  *
5120  * A value of 0xff stored in the channel_map indicates that the channel
5121  * is not supported by the hardware at all.
5122  *
5123  * A value of 0xfe in the channel_map indicates that the channel is not
5124  * valid for Tx with the current hardware.  This means that
5125  * while the system can tune and receive on a given channel, it may not
5126  * be able to associate or transmit any frames on that
5127  * channel.  There is no corresponding channel information for that
5128  * entry.
5129  *
5130  *********************************************************************/
5131
5132 /* 2.4 GHz */
5133 static const u8 iwl4965_eeprom_band_1[14] = {
5134         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5135 };
5136
5137 /* 5.2 GHz bands */
5138 static const u8 iwl4965_eeprom_band_2[] = {     /* 4915-5080MHz */
5139         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5140 };
5141
5142 static const u8 iwl4965_eeprom_band_3[] = {     /* 5170-5320MHz */
5143         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5144 };
5145
5146 static const u8 iwl4965_eeprom_band_4[] = {     /* 5500-5700MHz */
5147         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5148 };
5149
5150 static const u8 iwl4965_eeprom_band_5[] = {     /* 5725-5825MHz */
5151         145, 149, 153, 157, 161, 165
5152 };
5153
5154 static u8 iwl4965_eeprom_band_6[] = {       /* 2.4 FAT channel */
5155         1, 2, 3, 4, 5, 6, 7
5156 };
5157
5158 static u8 iwl4965_eeprom_band_7[] = {       /* 5.2 FAT channel */
5159         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5160 };
5161
5162 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5163                                     int band,
5164                                     int *eeprom_ch_count,
5165                                     const struct iwl4965_eeprom_channel
5166                                     **eeprom_ch_info,
5167                                     const u8 **eeprom_ch_index)
5168 {
5169         switch (band) {
5170         case 1:         /* 2.4GHz band */
5171                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5172                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5173                 *eeprom_ch_index = iwl4965_eeprom_band_1;
5174                 break;
5175         case 2:         /* 4.9GHz band */
5176                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5177                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5178                 *eeprom_ch_index = iwl4965_eeprom_band_2;
5179                 break;
5180         case 3:         /* 5.2GHz band */
5181                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5182                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5183                 *eeprom_ch_index = iwl4965_eeprom_band_3;
5184                 break;
5185         case 4:         /* 5.5GHz band */
5186                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5187                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5188                 *eeprom_ch_index = iwl4965_eeprom_band_4;
5189                 break;
5190         case 5:         /* 5.7GHz band */
5191                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5192                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5193                 *eeprom_ch_index = iwl4965_eeprom_band_5;
5194                 break;
5195         case 6:         /* 2.4GHz FAT channels */
5196                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5197                 *eeprom_ch_info = priv->eeprom.band_24_channels;
5198                 *eeprom_ch_index = iwl4965_eeprom_band_6;
5199                 break;
5200         case 7:         /* 5 GHz FAT channels */
5201                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5202                 *eeprom_ch_info = priv->eeprom.band_52_channels;
5203                 *eeprom_ch_index = iwl4965_eeprom_band_7;
5204                 break;
5205         default:
5206                 BUG();
5207                 return;
5208         }
5209 }
5210
5211 /**
5212  * iwl4965_get_channel_info - Find driver's private channel info
5213  *
5214  * Based on band and channel number.
5215  */
5216 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5217                                                     enum ieee80211_band band, u16 channel)
5218 {
5219         int i;
5220
5221         switch (band) {
5222         case IEEE80211_BAND_5GHZ:
5223                 for (i = 14; i < priv->channel_count; i++) {
5224                         if (priv->channel_info[i].channel == channel)
5225                                 return &priv->channel_info[i];
5226                 }
5227                 break;
5228         case IEEE80211_BAND_2GHZ:
5229                 if (channel >= 1 && channel <= 14)
5230                         return &priv->channel_info[channel - 1];
5231                 break;
5232         default:
5233                 BUG();
5234         }
5235
5236         return NULL;
5237 }
5238
5239 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5240                             ? # x " " : "")
5241
5242 /**
5243  * iwl4965_init_channel_map - Set up driver's info for all possible channels
5244  */
5245 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5246 {
5247         int eeprom_ch_count = 0;
5248         const u8 *eeprom_ch_index = NULL;
5249         const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5250         int band, ch;
5251         struct iwl4965_channel_info *ch_info;
5252
5253         if (priv->channel_count) {
5254                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5255                 return 0;
5256         }
5257
5258         if (priv->eeprom.version < 0x2f) {
5259                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5260                             priv->eeprom.version);
5261                 return -EINVAL;
5262         }
5263
5264         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5265
5266         priv->channel_count =
5267             ARRAY_SIZE(iwl4965_eeprom_band_1) +
5268             ARRAY_SIZE(iwl4965_eeprom_band_2) +
5269             ARRAY_SIZE(iwl4965_eeprom_band_3) +
5270             ARRAY_SIZE(iwl4965_eeprom_band_4) +
5271             ARRAY_SIZE(iwl4965_eeprom_band_5);
5272
5273         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5274
5275         priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5276                                      priv->channel_count, GFP_KERNEL);
5277         if (!priv->channel_info) {
5278                 IWL_ERROR("Could not allocate channel_info\n");
5279                 priv->channel_count = 0;
5280                 return -ENOMEM;
5281         }
5282
5283         ch_info = priv->channel_info;
5284
5285         /* Loop through the 5 EEPROM bands adding them in order to the
5286          * channel map we maintain (that contains additional information than
5287          * what just in the EEPROM) */
5288         for (band = 1; band <= 5; band++) {
5289
5290                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5291                                         &eeprom_ch_info, &eeprom_ch_index);
5292
5293                 /* Loop through each band adding each of the channels */
5294                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5295                         ch_info->channel = eeprom_ch_index[ch];
5296                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
5297                             IEEE80211_BAND_5GHZ;
5298
5299                         /* permanently store EEPROM's channel regulatory flags
5300                          *   and max power in channel info database. */
5301                         ch_info->eeprom = eeprom_ch_info[ch];
5302
5303                         /* Copy the run-time flags so they are there even on
5304                          * invalid channels */
5305                         ch_info->flags = eeprom_ch_info[ch].flags;
5306
5307                         if (!(is_channel_valid(ch_info))) {
5308                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5309                                                "No traffic\n",
5310                                                ch_info->channel,
5311                                                ch_info->flags,
5312                                                is_channel_a_band(ch_info) ?
5313                                                "5.2" : "2.4");
5314                                 ch_info++;
5315                                 continue;
5316                         }
5317
5318                         /* Initialize regulatory-based run-time data */
5319                         ch_info->max_power_avg = ch_info->curr_txpow =
5320                             eeprom_ch_info[ch].max_power_avg;
5321                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5322                         ch_info->min_power = 0;
5323
5324                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s%s(0x%02x"
5325                                        " %ddBm): Ad-Hoc %ssupported\n",
5326                                        ch_info->channel,
5327                                        is_channel_a_band(ch_info) ?
5328                                        "5.2" : "2.4",
5329                                        CHECK_AND_PRINT(VALID),
5330                                        CHECK_AND_PRINT(IBSS),
5331                                        CHECK_AND_PRINT(ACTIVE),
5332                                        CHECK_AND_PRINT(RADAR),
5333                                        CHECK_AND_PRINT(WIDE),
5334                                        CHECK_AND_PRINT(NARROW),
5335                                        CHECK_AND_PRINT(DFS),
5336                                        eeprom_ch_info[ch].flags,
5337                                        eeprom_ch_info[ch].max_power_avg,
5338                                        ((eeprom_ch_info[ch].
5339                                          flags & EEPROM_CHANNEL_IBSS)
5340                                         && !(eeprom_ch_info[ch].
5341                                              flags & EEPROM_CHANNEL_RADAR))
5342                                        ? "" : "not ");
5343
5344                         /* Set the user_txpower_limit to the highest power
5345                          * supported by any channel */
5346                         if (eeprom_ch_info[ch].max_power_avg >
5347                             priv->user_txpower_limit)
5348                                 priv->user_txpower_limit =
5349                                     eeprom_ch_info[ch].max_power_avg;
5350
5351                         ch_info++;
5352                 }
5353         }
5354
5355         /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5356         for (band = 6; band <= 7; band++) {
5357                 enum ieee80211_band ieeeband;
5358                 u8 fat_extension_chan;
5359
5360                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5361                                         &eeprom_ch_info, &eeprom_ch_index);
5362
5363                 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5364                 ieeeband = (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
5365
5366                 /* Loop through each band adding each of the channels */
5367                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5368
5369                         if ((band == 6) &&
5370                             ((eeprom_ch_index[ch] == 5) ||
5371                             (eeprom_ch_index[ch] == 6) ||
5372                             (eeprom_ch_index[ch] == 7)))
5373                                fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5374                         else
5375                                 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5376
5377                         /* Set up driver's info for lower half */
5378                         iwl4965_set_fat_chan_info(priv, ieeeband,
5379                                                   eeprom_ch_index[ch],
5380                                                   &(eeprom_ch_info[ch]),
5381                                                   fat_extension_chan);
5382
5383                         /* Set up driver's info for upper half */
5384                         iwl4965_set_fat_chan_info(priv, ieeeband,
5385                                                   (eeprom_ch_index[ch] + 4),
5386                                                   &(eeprom_ch_info[ch]),
5387                                                   HT_IE_EXT_CHANNEL_BELOW);
5388                 }
5389         }
5390
5391         return 0;
5392 }
5393
5394 /*
5395  * iwl4965_free_channel_map - undo allocations in iwl4965_init_channel_map
5396  */
5397 static void iwl4965_free_channel_map(struct iwl4965_priv *priv)
5398 {
5399         kfree(priv->channel_info);
5400         priv->channel_count = 0;
5401 }
5402
5403 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5404  * sending probe req.  This should be set long enough to hear probe responses
5405  * from more than one AP.  */
5406 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5407 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5408
5409 /* For faster active scanning, scan will move to the next channel if fewer than
5410  * PLCP_QUIET_THRESH packets are heard on this channel within
5411  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5412  * time if it's a quiet channel (nothing responded to our probe, and there's
5413  * no other traffic).
5414  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5415 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5416 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5417
5418 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5419  * Must be set longer than active dwell time.
5420  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5421 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5422 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5423 #define IWL_PASSIVE_DWELL_BASE      (100)
5424 #define IWL_CHANNEL_TUNE_TIME       5
5425
5426 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv,
5427                                                 enum ieee80211_band band)
5428 {
5429         if (band == IEEE80211_BAND_5GHZ)
5430                 return IWL_ACTIVE_DWELL_TIME_52;
5431         else
5432                 return IWL_ACTIVE_DWELL_TIME_24;
5433 }
5434
5435 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv,
5436                                           enum ieee80211_band band)
5437 {
5438         u16 active = iwl4965_get_active_dwell_time(priv, band);
5439         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
5440             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5441             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5442
5443         if (iwl4965_is_associated(priv)) {
5444                 /* If we're associated, we clamp the maximum passive
5445                  * dwell time to be 98% of the beacon interval (minus
5446                  * 2 * channel tune time) */
5447                 passive = priv->beacon_int;
5448                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5449                         passive = IWL_PASSIVE_DWELL_BASE;
5450                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5451         }
5452
5453         if (passive <= active)
5454                 passive = active + 1;
5455
5456         return passive;
5457 }
5458
5459 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv,
5460                                          enum ieee80211_band band,
5461                                      u8 is_active, u8 direct_mask,
5462                                      struct iwl4965_scan_channel *scan_ch)
5463 {
5464         const struct ieee80211_channel *channels = NULL;
5465         const struct ieee80211_supported_band *sband;
5466         const struct iwl4965_channel_info *ch_info;
5467         u16 passive_dwell = 0;
5468         u16 active_dwell = 0;
5469         int added, i;
5470
5471         sband = iwl4965_get_hw_mode(priv, band);
5472         if (!sband)
5473                 return 0;
5474
5475         channels = sband->channels;
5476
5477         active_dwell = iwl4965_get_active_dwell_time(priv, band);
5478         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
5479
5480         for (i = 0, added = 0; i < sband->n_channels; i++) {
5481                 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
5482                     le16_to_cpu(priv->active_rxon.channel)) {
5483                         if (iwl4965_is_associated(priv)) {
5484                                 IWL_DEBUG_SCAN
5485                                     ("Skipping current channel %d\n",
5486                                      le16_to_cpu(priv->active_rxon.channel));
5487                                 continue;
5488                         }
5489                 } else if (priv->only_active_channel)
5490                         continue;
5491
5492                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
5493
5494                 ch_info = iwl4965_get_channel_info(priv, band,
5495                                          scan_ch->channel);
5496                 if (!is_channel_valid(ch_info)) {
5497                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5498                                        scan_ch->channel);
5499                         continue;
5500                 }
5501
5502                 if (!is_active || is_channel_passive(ch_info) ||
5503                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
5504                         scan_ch->type = 0;      /* passive */
5505                 else
5506                         scan_ch->type = 1;      /* active */
5507
5508                 if (scan_ch->type & 1)
5509                         scan_ch->type |= (direct_mask << 1);
5510
5511                 if (is_channel_narrow(ch_info))
5512                         scan_ch->type |= (1 << 7);
5513
5514                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5515                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5516
5517                 /* Set txpower levels to defaults */
5518                 scan_ch->tpc.dsp_atten = 110;
5519                 /* scan_pwr_info->tpc.dsp_atten; */
5520
5521                 /*scan_pwr_info->tpc.tx_gain; */
5522                 if (band == IEEE80211_BAND_5GHZ)
5523                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5524                 else {
5525                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5526                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5527                          * power level:
5528                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5529                          */
5530                 }
5531
5532                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5533                                scan_ch->channel,
5534                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5535                                (scan_ch->type & 1) ?
5536                                active_dwell : passive_dwell);
5537
5538                 scan_ch++;
5539                 added++;
5540         }
5541
5542         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5543         return added;
5544 }
5545
5546 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5547                               struct ieee80211_rate *rates)
5548 {
5549         int i;
5550
5551         for (i = 0; i < IWL_RATE_COUNT; i++) {
5552                 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
5553                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5554                 rates[i].hw_value_short = i;
5555                 rates[i].flags = 0;
5556                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5557                         /*
5558                          * If CCK != 1M then set short preamble rate flag.
5559                          */
5560                         rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5561                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5562                 }
5563         }
5564 }
5565
5566 /**
5567  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5568  */
5569 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5570 {
5571         struct iwl4965_channel_info *ch;
5572         struct ieee80211_supported_band *sband;
5573         struct ieee80211_channel *channels;
5574         struct ieee80211_channel *geo_ch;
5575         struct ieee80211_rate *rates;
5576         int i = 0;
5577
5578         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5579             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5580                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5581                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5582                 return 0;
5583         }
5584
5585         channels = kzalloc(sizeof(struct ieee80211_channel) *
5586                            priv->channel_count, GFP_KERNEL);
5587         if (!channels)
5588                 return -ENOMEM;
5589
5590         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5591                         GFP_KERNEL);
5592         if (!rates) {
5593                 kfree(channels);
5594                 return -ENOMEM;
5595         }
5596
5597         /* 5.2GHz channels start after the 2.4GHz channels */
5598         sband = &priv->bands[IEEE80211_BAND_5GHZ];
5599         sband->channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5600         /* just OFDM */
5601         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5602         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5603
5604         iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_5GHZ);
5605
5606         sband = &priv->bands[IEEE80211_BAND_2GHZ];
5607         sband->channels = channels;
5608         /* OFDM & CCK */
5609         sband->bitrates = rates;
5610         sband->n_bitrates = IWL_RATE_COUNT;
5611
5612         iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_2GHZ);
5613
5614         priv->ieee_channels = channels;
5615         priv->ieee_rates = rates;
5616
5617         iwl4965_init_hw_rates(priv, rates);
5618
5619         for (i = 0;  i < priv->channel_count; i++) {
5620                 ch = &priv->channel_info[i];
5621
5622                 /* FIXME: might be removed if scan is OK */
5623                 if (!is_channel_valid(ch))
5624                         continue;
5625
5626                 if (is_channel_a_band(ch))
5627                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
5628                 else
5629                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
5630
5631                 geo_ch = &sband->channels[sband->n_channels++];
5632
5633                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5634                 geo_ch->max_power = ch->max_power_avg;
5635                 geo_ch->max_antenna_gain = 0xff;
5636                 geo_ch->hw_value = ch->channel;
5637
5638                 if (is_channel_valid(ch)) {
5639                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5640                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5641
5642                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5643                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5644
5645                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5646                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5647
5648                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5649                                 priv->max_channel_txpower_limit =
5650                                     ch->max_power_avg;
5651                 } else {
5652                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5653                 }
5654
5655                 /* Save flags for reg domain usage */
5656                 geo_ch->orig_flags = geo_ch->flags;
5657
5658                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5659                                 ch->channel, geo_ch->center_freq,
5660                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
5661                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5662                                 "restricted" : "valid",
5663                                  geo_ch->flags);
5664         }
5665
5666         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && priv->is_abg) {
5667                 printk(KERN_INFO DRV_NAME
5668                        ": Incorrectly detected BG card as ABG.  Please send "
5669                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5670                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5671                 priv->is_abg = 0;
5672         }
5673
5674         printk(KERN_INFO DRV_NAME
5675                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5676                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5677                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5678
5679         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5680         priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5681
5682         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5683
5684         return 0;
5685 }
5686
5687 /*
5688  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5689  */
5690 static void iwl4965_free_geos(struct iwl4965_priv *priv)
5691 {
5692         kfree(priv->ieee_channels);
5693         kfree(priv->ieee_rates);
5694         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5695 }
5696
5697 /******************************************************************************
5698  *
5699  * uCode download functions
5700  *
5701  ******************************************************************************/
5702
5703 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5704 {
5705         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5706         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5707         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5708         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5709         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5710         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5711 }
5712
5713 /**
5714  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5715  *     looking at all data.
5716  */
5717 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 *image,
5718                                  u32 len)
5719 {
5720         u32 val;
5721         u32 save_len = len;
5722         int rc = 0;
5723         u32 errcnt;
5724
5725         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5726
5727         rc = iwl4965_grab_nic_access(priv);
5728         if (rc)
5729                 return rc;
5730
5731         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5732
5733         errcnt = 0;
5734         for (; len > 0; len -= sizeof(u32), image++) {
5735                 /* read data comes through single port, auto-incr addr */
5736                 /* NOTE: Use the debugless read so we don't flood kernel log
5737                  * if IWL_DL_IO is set */
5738                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5739                 if (val != le32_to_cpu(*image)) {
5740                         IWL_ERROR("uCode INST section is invalid at "
5741                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5742                                   save_len - len, val, le32_to_cpu(*image));
5743                         rc = -EIO;
5744                         errcnt++;
5745                         if (errcnt >= 20)
5746                                 break;
5747                 }
5748         }
5749
5750         iwl4965_release_nic_access(priv);
5751
5752         if (!errcnt)
5753                 IWL_DEBUG_INFO
5754                     ("ucode image in INSTRUCTION memory is good\n");
5755
5756         return rc;
5757 }
5758
5759
5760 /**
5761  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5762  *   using sample data 100 bytes apart.  If these sample points are good,
5763  *   it's a pretty good bet that everything between them is good, too.
5764  */
5765 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
5766 {
5767         u32 val;
5768         int rc = 0;
5769         u32 errcnt = 0;
5770         u32 i;
5771
5772         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5773
5774         rc = iwl4965_grab_nic_access(priv);
5775         if (rc)
5776                 return rc;
5777
5778         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5779                 /* read data comes through single port, auto-incr addr */
5780                 /* NOTE: Use the debugless read so we don't flood kernel log
5781                  * if IWL_DL_IO is set */
5782                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5783                         i + RTC_INST_LOWER_BOUND);
5784                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5785                 if (val != le32_to_cpu(*image)) {
5786 #if 0 /* Enable this if you want to see details */
5787                         IWL_ERROR("uCode INST section is invalid at "
5788                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5789                                   i, val, *image);
5790 #endif
5791                         rc = -EIO;
5792                         errcnt++;
5793                         if (errcnt >= 3)
5794                                 break;
5795                 }
5796         }
5797
5798         iwl4965_release_nic_access(priv);
5799
5800         return rc;
5801 }
5802
5803
5804 /**
5805  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5806  *    and verify its contents
5807  */
5808 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
5809 {
5810         __le32 *image;
5811         u32 len;
5812         int rc = 0;
5813
5814         /* Try bootstrap */
5815         image = (__le32 *)priv->ucode_boot.v_addr;
5816         len = priv->ucode_boot.len;
5817         rc = iwl4965_verify_inst_sparse(priv, image, len);
5818         if (rc == 0) {
5819                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5820                 return 0;
5821         }
5822
5823         /* Try initialize */
5824         image = (__le32 *)priv->ucode_init.v_addr;
5825         len = priv->ucode_init.len;
5826         rc = iwl4965_verify_inst_sparse(priv, image, len);
5827         if (rc == 0) {
5828                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5829                 return 0;
5830         }
5831
5832         /* Try runtime/protocol */
5833         image = (__le32 *)priv->ucode_code.v_addr;
5834         len = priv->ucode_code.len;
5835         rc = iwl4965_verify_inst_sparse(priv, image, len);
5836         if (rc == 0) {
5837                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5838                 return 0;
5839         }
5840
5841         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5842
5843         /* Since nothing seems to match, show first several data entries in
5844          * instruction SRAM, so maybe visual inspection will give a clue.
5845          * Selection of bootstrap image (vs. other images) is arbitrary. */
5846         image = (__le32 *)priv->ucode_boot.v_addr;
5847         len = priv->ucode_boot.len;
5848         rc = iwl4965_verify_inst_full(priv, image, len);
5849
5850         return rc;
5851 }
5852
5853
5854 /* check contents of special bootstrap uCode SRAM */
5855 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
5856 {
5857         __le32 *image = priv->ucode_boot.v_addr;
5858         u32 len = priv->ucode_boot.len;
5859         u32 reg;
5860         u32 val;
5861
5862         IWL_DEBUG_INFO("Begin verify bsm\n");
5863
5864         /* verify BSM SRAM contents */
5865         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
5866         for (reg = BSM_SRAM_LOWER_BOUND;
5867              reg < BSM_SRAM_LOWER_BOUND + len;
5868              reg += sizeof(u32), image ++) {
5869                 val = iwl4965_read_prph(priv, reg);
5870                 if (val != le32_to_cpu(*image)) {
5871                         IWL_ERROR("BSM uCode verification failed at "
5872                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5873                                   BSM_SRAM_LOWER_BOUND,
5874                                   reg - BSM_SRAM_LOWER_BOUND, len,
5875                                   val, le32_to_cpu(*image));
5876                         return -EIO;
5877                 }
5878         }
5879
5880         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5881
5882         return 0;
5883 }
5884
5885 /**
5886  * iwl4965_load_bsm - Load bootstrap instructions
5887  *
5888  * BSM operation:
5889  *
5890  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5891  * in special SRAM that does not power down during RFKILL.  When powering back
5892  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5893  * the bootstrap program into the on-board processor, and starts it.
5894  *
5895  * The bootstrap program loads (via DMA) instructions and data for a new
5896  * program from host DRAM locations indicated by the host driver in the
5897  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5898  * automatically.
5899  *
5900  * When initializing the NIC, the host driver points the BSM to the
5901  * "initialize" uCode image.  This uCode sets up some internal data, then
5902  * notifies host via "initialize alive" that it is complete.
5903  *
5904  * The host then replaces the BSM_DRAM_* pointer values to point to the
5905  * normal runtime uCode instructions and a backup uCode data cache buffer
5906  * (filled initially with starting data values for the on-board processor),
5907  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5908  * which begins normal operation.
5909  *
5910  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5911  * the backup data cache in DRAM before SRAM is powered down.
5912  *
5913  * When powering back up, the BSM loads the bootstrap program.  This reloads
5914  * the runtime uCode instructions and the backup data cache into SRAM,
5915  * and re-launches the runtime uCode from where it left off.
5916  */
5917 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
5918 {
5919         __le32 *image = priv->ucode_boot.v_addr;
5920         u32 len = priv->ucode_boot.len;
5921         dma_addr_t pinst;
5922         dma_addr_t pdata;
5923         u32 inst_len;
5924         u32 data_len;
5925         int rc;
5926         int i;
5927         u32 done;
5928         u32 reg_offset;
5929
5930         IWL_DEBUG_INFO("Begin load bsm\n");
5931
5932         /* make sure bootstrap program is no larger than BSM's SRAM size */
5933         if (len > IWL_MAX_BSM_SIZE)
5934                 return -EINVAL;
5935
5936         /* Tell bootstrap uCode where to find the "Initialize" uCode
5937          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5938          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
5939          *        after the "initialize" uCode has run, to point to
5940          *        runtime/protocol instructions and backup data cache. */
5941         pinst = priv->ucode_init.p_addr >> 4;
5942         pdata = priv->ucode_init_data.p_addr >> 4;
5943         inst_len = priv->ucode_init.len;
5944         data_len = priv->ucode_init_data.len;
5945
5946         rc = iwl4965_grab_nic_access(priv);
5947         if (rc)
5948                 return rc;
5949
5950         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5951         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5952         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5953         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5954
5955         /* Fill BSM memory with bootstrap instructions */
5956         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5957              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5958              reg_offset += sizeof(u32), image++)
5959                 _iwl4965_write_prph(priv, reg_offset,
5960                                           le32_to_cpu(*image));
5961
5962         rc = iwl4965_verify_bsm(priv);
5963         if (rc) {
5964                 iwl4965_release_nic_access(priv);
5965                 return rc;
5966         }
5967
5968         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5969         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5970         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
5971                                  RTC_INST_LOWER_BOUND);
5972         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5973
5974         /* Load bootstrap code into instruction SRAM now,
5975          *   to prepare to load "initialize" uCode */
5976         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5977                 BSM_WR_CTRL_REG_BIT_START);
5978
5979         /* Wait for load of bootstrap uCode to finish */
5980         for (i = 0; i < 100; i++) {
5981                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
5982                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5983                         break;
5984                 udelay(10);
5985         }
5986         if (i < 100)
5987                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5988         else {
5989                 IWL_ERROR("BSM write did not complete!\n");
5990                 return -EIO;
5991         }
5992
5993         /* Enable future boot loads whenever power management unit triggers it
5994          *   (e.g. when powering back up after power-save shutdown) */
5995         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5996                 BSM_WR_CTRL_REG_BIT_START_EN);
5997
5998         iwl4965_release_nic_access(priv);
5999
6000         return 0;
6001 }
6002
6003 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6004 {
6005         /* Remove all resets to allow NIC to operate */
6006         iwl4965_write32(priv, CSR_RESET, 0);
6007 }
6008
6009
6010 /**
6011  * iwl4965_read_ucode - Read uCode images from disk file.
6012  *
6013  * Copy into buffers for card to fetch via bus-mastering
6014  */
6015 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6016 {
6017         struct iwl4965_ucode *ucode;
6018         int ret;
6019         const struct firmware *ucode_raw;
6020         const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6021         u8 *src;
6022         size_t len;
6023         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6024
6025         /* Ask kernel firmware_class module to get the boot firmware off disk.
6026          * request_firmware() is synchronous, file is in memory on return. */
6027         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6028         if (ret < 0) {
6029                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6030                                         name, ret);
6031                 goto error;
6032         }
6033
6034         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6035                        name, ucode_raw->size);
6036
6037         /* Make sure that we got at least our header! */
6038         if (ucode_raw->size < sizeof(*ucode)) {
6039                 IWL_ERROR("File size way too small!\n");
6040                 ret = -EINVAL;
6041                 goto err_release;
6042         }
6043
6044         /* Data from ucode file:  header followed by uCode images */
6045         ucode = (void *)ucode_raw->data;
6046
6047         ver = le32_to_cpu(ucode->ver);
6048         inst_size = le32_to_cpu(ucode->inst_size);
6049         data_size = le32_to_cpu(ucode->data_size);
6050         init_size = le32_to_cpu(ucode->init_size);
6051         init_data_size = le32_to_cpu(ucode->init_data_size);
6052         boot_size = le32_to_cpu(ucode->boot_size);
6053
6054         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6055         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6056                        inst_size);
6057         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6058                        data_size);
6059         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6060                        init_size);
6061         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6062                        init_data_size);
6063         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6064                        boot_size);
6065
6066         /* Verify size of file vs. image size info in file's header */
6067         if (ucode_raw->size < sizeof(*ucode) +
6068                 inst_size + data_size + init_size +
6069                 init_data_size + boot_size) {
6070
6071                 IWL_DEBUG_INFO("uCode file size %d too small\n",
6072                                (int)ucode_raw->size);
6073                 ret = -EINVAL;
6074                 goto err_release;
6075         }
6076
6077         /* Verify that uCode images will fit in card's SRAM */
6078         if (inst_size > IWL_MAX_INST_SIZE) {
6079                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6080                                inst_size);
6081                 ret = -EINVAL;
6082                 goto err_release;
6083         }
6084
6085         if (data_size > IWL_MAX_DATA_SIZE) {
6086                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6087                                 data_size);
6088                 ret = -EINVAL;
6089                 goto err_release;
6090         }
6091         if (init_size > IWL_MAX_INST_SIZE) {
6092                 IWL_DEBUG_INFO
6093                     ("uCode init instr len %d too large to fit in\n",
6094                       init_size);
6095                 ret = -EINVAL;
6096                 goto err_release;
6097         }
6098         if (init_data_size > IWL_MAX_DATA_SIZE) {
6099                 IWL_DEBUG_INFO
6100                     ("uCode init data len %d too large to fit in\n",
6101                       init_data_size);
6102                 ret = -EINVAL;
6103                 goto err_release;
6104         }
6105         if (boot_size > IWL_MAX_BSM_SIZE) {
6106                 IWL_DEBUG_INFO
6107                     ("uCode boot instr len %d too large to fit in\n",
6108                       boot_size);
6109                 ret = -EINVAL;
6110                 goto err_release;
6111         }
6112
6113         /* Allocate ucode buffers for card's bus-master loading ... */
6114
6115         /* Runtime instructions and 2 copies of data:
6116          * 1) unmodified from disk
6117          * 2) backup cache for save/restore during power-downs */
6118         priv->ucode_code.len = inst_size;
6119         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6120
6121         priv->ucode_data.len = data_size;
6122         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6123
6124         priv->ucode_data_backup.len = data_size;
6125         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6126
6127         /* Initialization instructions and data */
6128         if (init_size && init_data_size) {
6129                 priv->ucode_init.len = init_size;
6130                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6131
6132                 priv->ucode_init_data.len = init_data_size;
6133                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6134
6135                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6136                         goto err_pci_alloc;
6137         }
6138
6139         /* Bootstrap (instructions only, no data) */
6140         if (boot_size) {
6141                 priv->ucode_boot.len = boot_size;
6142                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6143
6144                 if (!priv->ucode_boot.v_addr)
6145                         goto err_pci_alloc;
6146         }
6147
6148         /* Copy images into buffers for card's bus-master reads ... */
6149
6150         /* Runtime instructions (first block of data in file) */
6151         src = &ucode->data[0];
6152         len = priv->ucode_code.len;
6153         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6154         memcpy(priv->ucode_code.v_addr, src, len);
6155         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6156                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6157
6158         /* Runtime data (2nd block)
6159          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
6160         src = &ucode->data[inst_size];
6161         len = priv->ucode_data.len;
6162         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6163         memcpy(priv->ucode_data.v_addr, src, len);
6164         memcpy(priv->ucode_data_backup.v_addr, src, len);
6165
6166         /* Initialization instructions (3rd block) */
6167         if (init_size) {
6168                 src = &ucode->data[inst_size + data_size];
6169                 len = priv->ucode_init.len;
6170                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6171                                 len);
6172                 memcpy(priv->ucode_init.v_addr, src, len);
6173         }
6174
6175         /* Initialization data (4th block) */
6176         if (init_data_size) {
6177                 src = &ucode->data[inst_size + data_size + init_size];
6178                 len = priv->ucode_init_data.len;
6179                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6180                                len);
6181                 memcpy(priv->ucode_init_data.v_addr, src, len);
6182         }
6183
6184         /* Bootstrap instructions (5th block) */
6185         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6186         len = priv->ucode_boot.len;
6187         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6188         memcpy(priv->ucode_boot.v_addr, src, len);
6189
6190         /* We have our copies now, allow OS release its copies */
6191         release_firmware(ucode_raw);
6192         return 0;
6193
6194  err_pci_alloc:
6195         IWL_ERROR("failed to allocate pci memory\n");
6196         ret = -ENOMEM;
6197         iwl4965_dealloc_ucode_pci(priv);
6198
6199  err_release:
6200         release_firmware(ucode_raw);
6201
6202  error:
6203         return ret;
6204 }
6205
6206
6207 /**
6208  * iwl4965_set_ucode_ptrs - Set uCode address location
6209  *
6210  * Tell initialization uCode where to find runtime uCode.
6211  *
6212  * BSM registers initially contain pointers to initialization uCode.
6213  * We need to replace them to load runtime uCode inst and data,
6214  * and to save runtime data when powering down.
6215  */
6216 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6217 {
6218         dma_addr_t pinst;
6219         dma_addr_t pdata;
6220         int rc = 0;
6221         unsigned long flags;
6222
6223         /* bits 35:4 for 4965 */
6224         pinst = priv->ucode_code.p_addr >> 4;
6225         pdata = priv->ucode_data_backup.p_addr >> 4;
6226
6227         spin_lock_irqsave(&priv->lock, flags);
6228         rc = iwl4965_grab_nic_access(priv);
6229         if (rc) {
6230                 spin_unlock_irqrestore(&priv->lock, flags);
6231                 return rc;
6232         }
6233
6234         /* Tell bootstrap uCode where to find image to load */
6235         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6236         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6237         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6238                                  priv->ucode_data.len);
6239
6240         /* Inst bytecount must be last to set up, bit 31 signals uCode
6241          *   that all new ptr/size info is in place */
6242         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6243                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6244
6245         iwl4965_release_nic_access(priv);
6246
6247         spin_unlock_irqrestore(&priv->lock, flags);
6248
6249         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6250
6251         return rc;
6252 }
6253
6254 /**
6255  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6256  *
6257  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6258  *
6259  * The 4965 "initialize" ALIVE reply contains calibration data for:
6260  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
6261  *   (3945 does not contain this data).
6262  *
6263  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6264 */
6265 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6266 {
6267         /* Check alive response for "valid" sign from uCode */
6268         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6269                 /* We had an error bringing up the hardware, so take it
6270                  * all the way back down so we can try again */
6271                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6272                 goto restart;
6273         }
6274
6275         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6276          * This is a paranoid check, because we would not have gotten the
6277          * "initialize" alive if code weren't properly loaded.  */
6278         if (iwl4965_verify_ucode(priv)) {
6279                 /* Runtime instruction load was bad;
6280                  * take it all the way back down so we can try again */
6281                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6282                 goto restart;
6283         }
6284
6285         /* Calculate temperature */
6286         priv->temperature = iwl4965_get_temperature(priv);
6287
6288         /* Send pointers to protocol/runtime uCode image ... init code will
6289          * load and launch runtime uCode, which will send us another "Alive"
6290          * notification. */
6291         IWL_DEBUG_INFO("Initialization Alive received.\n");
6292         if (iwl4965_set_ucode_ptrs(priv)) {
6293                 /* Runtime instruction load won't happen;
6294                  * take it all the way back down so we can try again */
6295                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6296                 goto restart;
6297         }
6298         return;
6299
6300  restart:
6301         queue_work(priv->workqueue, &priv->restart);
6302 }
6303
6304
6305 /**
6306  * iwl4965_alive_start - called after REPLY_ALIVE notification received
6307  *                   from protocol/runtime uCode (initialization uCode's
6308  *                   Alive gets handled by iwl4965_init_alive_start()).
6309  */
6310 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6311 {
6312         int rc = 0;
6313
6314         IWL_DEBUG_INFO("Runtime Alive received.\n");
6315
6316         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6317                 /* We had an error bringing up the hardware, so take it
6318                  * all the way back down so we can try again */
6319                 IWL_DEBUG_INFO("Alive failed.\n");
6320                 goto restart;
6321         }
6322
6323         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6324          * This is a paranoid check, because we would not have gotten the
6325          * "runtime" alive if code weren't properly loaded.  */
6326         if (iwl4965_verify_ucode(priv)) {
6327                 /* Runtime instruction load was bad;
6328                  * take it all the way back down so we can try again */
6329                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6330                 goto restart;
6331         }
6332
6333         iwl4965_clear_stations_table(priv);
6334
6335         rc = iwl4965_alive_notify(priv);
6336         if (rc) {
6337                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6338                             rc);
6339                 goto restart;
6340         }
6341
6342         /* After the ALIVE response, we can send host commands to 4965 uCode */
6343         set_bit(STATUS_ALIVE, &priv->status);
6344
6345         /* Clear out the uCode error bit if it is set */
6346         clear_bit(STATUS_FW_ERROR, &priv->status);
6347
6348         if (iwl4965_is_rfkill(priv))
6349                 return;
6350
6351         ieee80211_start_queues(priv->hw);
6352
6353         priv->active_rate = priv->rates_mask;
6354         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6355
6356         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6357
6358         if (iwl4965_is_associated(priv)) {
6359                 struct iwl4965_rxon_cmd *active_rxon =
6360                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6361
6362                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6363                        sizeof(priv->staging_rxon));
6364                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6365         } else {
6366                 /* Initialize our rx_config data */
6367                 iwl4965_connection_init_rx_config(priv);
6368                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6369         }
6370
6371         /* Configure Bluetooth device coexistence support */
6372         iwl4965_send_bt_config(priv);
6373
6374         /* Configure the adapter for unassociated operation */
6375         iwl4965_commit_rxon(priv);
6376
6377         /* At this point, the NIC is initialized and operational */
6378         priv->notif_missed_beacons = 0;
6379         set_bit(STATUS_READY, &priv->status);
6380
6381         iwl4965_rf_kill_ct_config(priv);
6382
6383         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6384         wake_up_interruptible(&priv->wait_command_queue);
6385
6386         if (priv->error_recovering)
6387                 iwl4965_error_recovery(priv);
6388
6389         return;
6390
6391  restart:
6392         queue_work(priv->workqueue, &priv->restart);
6393 }
6394
6395 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6396
6397 static void __iwl4965_down(struct iwl4965_priv *priv)
6398 {
6399         unsigned long flags;
6400         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6401         struct ieee80211_conf *conf = NULL;
6402
6403         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6404
6405         conf = ieee80211_get_hw_conf(priv->hw);
6406
6407         if (!exit_pending)
6408                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6409
6410         iwl4965_clear_stations_table(priv);
6411
6412         /* Unblock any waiting calls */
6413         wake_up_interruptible_all(&priv->wait_command_queue);
6414
6415         /* Wipe out the EXIT_PENDING status bit if we are not actually
6416          * exiting the module */
6417         if (!exit_pending)
6418                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6419
6420         /* stop and reset the on-board processor */
6421         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6422
6423         /* tell the device to stop sending interrupts */
6424         iwl4965_disable_interrupts(priv);
6425
6426         if (priv->mac80211_registered)
6427                 ieee80211_stop_queues(priv->hw);
6428
6429         /* If we have not previously called iwl4965_init() then
6430          * clear all bits but the RF Kill and SUSPEND bits and return */
6431         if (!iwl4965_is_init(priv)) {
6432                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6433                                         STATUS_RF_KILL_HW |
6434                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6435                                         STATUS_RF_KILL_SW |
6436                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6437                                         STATUS_GEO_CONFIGURED |
6438                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6439                                         STATUS_IN_SUSPEND;
6440                 goto exit;
6441         }
6442
6443         /* ...otherwise clear out all the status bits but the RF Kill and
6444          * SUSPEND bits and continue taking the NIC down. */
6445         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6446                                 STATUS_RF_KILL_HW |
6447                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6448                                 STATUS_RF_KILL_SW |
6449                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6450                                 STATUS_GEO_CONFIGURED |
6451                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6452                                 STATUS_IN_SUSPEND |
6453                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6454                                 STATUS_FW_ERROR;
6455
6456         spin_lock_irqsave(&priv->lock, flags);
6457         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6458                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6459         spin_unlock_irqrestore(&priv->lock, flags);
6460
6461         iwl4965_hw_txq_ctx_stop(priv);
6462         iwl4965_hw_rxq_stop(priv);
6463
6464         spin_lock_irqsave(&priv->lock, flags);
6465         if (!iwl4965_grab_nic_access(priv)) {
6466                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6467                                          APMG_CLK_VAL_DMA_CLK_RQT);
6468                 iwl4965_release_nic_access(priv);
6469         }
6470         spin_unlock_irqrestore(&priv->lock, flags);
6471
6472         udelay(5);
6473
6474         iwl4965_hw_nic_stop_master(priv);
6475         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6476         iwl4965_hw_nic_reset(priv);
6477
6478  exit:
6479         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6480
6481         if (priv->ibss_beacon)
6482                 dev_kfree_skb(priv->ibss_beacon);
6483         priv->ibss_beacon = NULL;
6484
6485         /* clear out any free frames */
6486         iwl4965_clear_free_frames(priv);
6487 }
6488
6489 static void iwl4965_down(struct iwl4965_priv *priv)
6490 {
6491         mutex_lock(&priv->mutex);
6492         __iwl4965_down(priv);
6493         mutex_unlock(&priv->mutex);
6494
6495         iwl4965_cancel_deferred_work(priv);
6496 }
6497
6498 #define MAX_HW_RESTARTS 5
6499
6500 static int __iwl4965_up(struct iwl4965_priv *priv)
6501 {
6502         int rc, i;
6503
6504         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6505                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6506                 return -EIO;
6507         }
6508
6509         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6510                 IWL_WARNING("Radio disabled by SW RF kill (module "
6511                             "parameter)\n");
6512                 return -ENODEV;
6513         }
6514
6515         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6516                 IWL_ERROR("ucode not available for device bringup\n");
6517                 return -EIO;
6518         }
6519
6520         /* If platform's RF_KILL switch is NOT set to KILL */
6521         if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6522                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6523                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6524         else {
6525                 set_bit(STATUS_RF_KILL_HW, &priv->status);
6526                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6527                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6528                         return -ENODEV;
6529                 }
6530         }
6531
6532         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6533
6534         rc = iwl4965_hw_nic_init(priv);
6535         if (rc) {
6536                 IWL_ERROR("Unable to int nic\n");
6537                 return rc;
6538         }
6539
6540         /* make sure rfkill handshake bits are cleared */
6541         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6542         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6543                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6544
6545         /* clear (again), then enable host interrupts */
6546         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6547         iwl4965_enable_interrupts(priv);
6548
6549         /* really make sure rfkill handshake bits are cleared */
6550         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6551         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6552
6553         /* Copy original ucode data image from disk into backup cache.
6554          * This will be used to initialize the on-board processor's
6555          * data SRAM for a clean start when the runtime program first loads. */
6556         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6557                priv->ucode_data.len);
6558
6559         /* We return success when we resume from suspend and rf_kill is on. */
6560         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6561                 return 0;
6562
6563         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6564
6565                 iwl4965_clear_stations_table(priv);
6566
6567                 /* load bootstrap state machine,
6568                  * load bootstrap program into processor's memory,
6569                  * prepare to load the "initialize" uCode */
6570                 rc = iwl4965_load_bsm(priv);
6571
6572                 if (rc) {
6573                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6574                         continue;
6575                 }
6576
6577                 /* start card; "initialize" will load runtime ucode */
6578                 iwl4965_nic_start(priv);
6579
6580                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6581
6582                 return 0;
6583         }
6584
6585         set_bit(STATUS_EXIT_PENDING, &priv->status);
6586         __iwl4965_down(priv);
6587
6588         /* tried to restart and config the device for as long as our
6589          * patience could withstand */
6590         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6591         return -EIO;
6592 }
6593
6594
6595 /*****************************************************************************
6596  *
6597  * Workqueue callbacks
6598  *
6599  *****************************************************************************/
6600
6601 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6602 {
6603         struct iwl4965_priv *priv =
6604             container_of(data, struct iwl4965_priv, init_alive_start.work);
6605
6606         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6607                 return;
6608
6609         mutex_lock(&priv->mutex);
6610         iwl4965_init_alive_start(priv);
6611         mutex_unlock(&priv->mutex);
6612 }
6613
6614 static void iwl4965_bg_alive_start(struct work_struct *data)
6615 {
6616         struct iwl4965_priv *priv =
6617             container_of(data, struct iwl4965_priv, alive_start.work);
6618
6619         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6620                 return;
6621
6622         mutex_lock(&priv->mutex);
6623         iwl4965_alive_start(priv);
6624         mutex_unlock(&priv->mutex);
6625 }
6626
6627 static void iwl4965_bg_rf_kill(struct work_struct *work)
6628 {
6629         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6630
6631         wake_up_interruptible(&priv->wait_command_queue);
6632
6633         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6634                 return;
6635
6636         mutex_lock(&priv->mutex);
6637
6638         if (!iwl4965_is_rfkill(priv)) {
6639                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6640                           "HW and/or SW RF Kill no longer active, restarting "
6641                           "device\n");
6642                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6643                         queue_work(priv->workqueue, &priv->restart);
6644         } else {
6645
6646                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6647                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6648                                           "disabled by SW switch\n");
6649                 else
6650                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6651                                     "Kill switch must be turned off for "
6652                                     "wireless networking to work.\n");
6653         }
6654         mutex_unlock(&priv->mutex);
6655 }
6656
6657 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6658
6659 static void iwl4965_bg_scan_check(struct work_struct *data)
6660 {
6661         struct iwl4965_priv *priv =
6662             container_of(data, struct iwl4965_priv, scan_check.work);
6663
6664         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6665                 return;
6666
6667         mutex_lock(&priv->mutex);
6668         if (test_bit(STATUS_SCANNING, &priv->status) ||
6669             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6670                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6671                           "Scan completion watchdog resetting adapter (%dms)\n",
6672                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6673
6674                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6675                         iwl4965_send_scan_abort(priv);
6676         }
6677         mutex_unlock(&priv->mutex);
6678 }
6679
6680 static void iwl4965_bg_request_scan(struct work_struct *data)
6681 {
6682         struct iwl4965_priv *priv =
6683             container_of(data, struct iwl4965_priv, request_scan);
6684         struct iwl4965_host_cmd cmd = {
6685                 .id = REPLY_SCAN_CMD,
6686                 .len = sizeof(struct iwl4965_scan_cmd),
6687                 .meta.flags = CMD_SIZE_HUGE,
6688         };
6689         int rc = 0;
6690         struct iwl4965_scan_cmd *scan;
6691         struct ieee80211_conf *conf = NULL;
6692         u16 cmd_len;
6693         enum ieee80211_band band;
6694         u8 direct_mask;
6695
6696         conf = ieee80211_get_hw_conf(priv->hw);
6697
6698         mutex_lock(&priv->mutex);
6699
6700         if (!iwl4965_is_ready(priv)) {
6701                 IWL_WARNING("request scan called when driver not ready.\n");
6702                 goto done;
6703         }
6704
6705         /* Make sure the scan wasn't cancelled before this queued work
6706          * was given the chance to run... */
6707         if (!test_bit(STATUS_SCANNING, &priv->status))
6708                 goto done;
6709
6710         /* This should never be called or scheduled if there is currently
6711          * a scan active in the hardware. */
6712         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6713                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6714                                "Ignoring second request.\n");
6715                 rc = -EIO;
6716                 goto done;
6717         }
6718
6719         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6720                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6721                 goto done;
6722         }
6723
6724         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6725                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6726                 goto done;
6727         }
6728
6729         if (iwl4965_is_rfkill(priv)) {
6730                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6731                 goto done;
6732         }
6733
6734         if (!test_bit(STATUS_READY, &priv->status)) {
6735                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6736                 goto done;
6737         }
6738
6739         if (!priv->scan_bands) {
6740                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6741                 goto done;
6742         }
6743
6744         if (!priv->scan) {
6745                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6746                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6747                 if (!priv->scan) {
6748                         rc = -ENOMEM;
6749                         goto done;
6750                 }
6751         }
6752         scan = priv->scan;
6753         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6754
6755         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6756         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6757
6758         if (iwl4965_is_associated(priv)) {
6759                 u16 interval = 0;
6760                 u32 extra;
6761                 u32 suspend_time = 100;
6762                 u32 scan_suspend_time = 100;
6763                 unsigned long flags;
6764
6765                 IWL_DEBUG_INFO("Scanning while associated...\n");
6766
6767                 spin_lock_irqsave(&priv->lock, flags);
6768                 interval = priv->beacon_int;
6769                 spin_unlock_irqrestore(&priv->lock, flags);
6770
6771                 scan->suspend_time = 0;
6772                 scan->max_out_time = cpu_to_le32(200 * 1024);
6773                 if (!interval)
6774                         interval = suspend_time;
6775
6776                 extra = (suspend_time / interval) << 22;
6777                 scan_suspend_time = (extra |
6778                     ((suspend_time % interval) * 1024));
6779                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6780                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6781                                scan_suspend_time, interval);
6782         }
6783
6784         /* We should add the ability for user to lock to PASSIVE ONLY */
6785         if (priv->one_direct_scan) {
6786                 IWL_DEBUG_SCAN
6787                     ("Kicking off one direct scan for '%s'\n",
6788                      iwl4965_escape_essid(priv->direct_ssid,
6789                                       priv->direct_ssid_len));
6790                 scan->direct_scan[0].id = WLAN_EID_SSID;
6791                 scan->direct_scan[0].len = priv->direct_ssid_len;
6792                 memcpy(scan->direct_scan[0].ssid,
6793                        priv->direct_ssid, priv->direct_ssid_len);
6794                 direct_mask = 1;
6795         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6796                 scan->direct_scan[0].id = WLAN_EID_SSID;
6797                 scan->direct_scan[0].len = priv->essid_len;
6798                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6799                 direct_mask = 1;
6800         } else
6801                 direct_mask = 0;
6802
6803         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6804         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6805         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6806
6807
6808         switch (priv->scan_bands) {
6809         case 2:
6810                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6811                 scan->tx_cmd.rate_n_flags =
6812                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6813                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6814
6815                 scan->good_CRC_th = 0;
6816                 band = IEEE80211_BAND_2GHZ;
6817                 break;
6818
6819         case 1:
6820                 scan->tx_cmd.rate_n_flags =
6821                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6822                                 RATE_MCS_ANT_B_MSK);
6823                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6824                 band = IEEE80211_BAND_5GHZ;
6825                 break;
6826
6827         default:
6828                 IWL_WARNING("Invalid scan band count\n");
6829                 goto done;
6830         }
6831
6832         /* We don't build a direct scan probe request; the uCode will do
6833          * that based on the direct_mask added to each channel entry */
6834         cmd_len = iwl4965_fill_probe_req(priv, band,
6835                                         (struct ieee80211_mgmt *)scan->data,
6836                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6837
6838         scan->tx_cmd.len = cpu_to_le16(cmd_len);
6839         /* select Rx chains */
6840
6841         /* Force use of chains B and C (0x6) for scan Rx.
6842          * Avoid A (0x1) because of its off-channel reception on A-band.
6843          * MIMO is not used here, but value is required to make uCode happy. */
6844         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6845                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6846                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6847                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6848
6849         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6850                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6851
6852         if (direct_mask)
6853                 IWL_DEBUG_SCAN
6854                     ("Initiating direct scan for %s.\n",
6855                      iwl4965_escape_essid(priv->essid, priv->essid_len));
6856         else
6857                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6858
6859         scan->channel_count =
6860                 iwl4965_get_channels_for_scan(
6861                         priv, band, 1, /* active */
6862                         direct_mask,
6863                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6864
6865         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6866             scan->channel_count * sizeof(struct iwl4965_scan_channel);
6867         cmd.data = scan;
6868         scan->len = cpu_to_le16(cmd.len);
6869
6870         set_bit(STATUS_SCAN_HW, &priv->status);
6871         rc = iwl4965_send_cmd_sync(priv, &cmd);
6872         if (rc)
6873                 goto done;
6874
6875         queue_delayed_work(priv->workqueue, &priv->scan_check,
6876                            IWL_SCAN_CHECK_WATCHDOG);
6877
6878         mutex_unlock(&priv->mutex);
6879         return;
6880
6881  done:
6882         /* inform mac80211 scan aborted */
6883         queue_work(priv->workqueue, &priv->scan_completed);
6884         mutex_unlock(&priv->mutex);
6885 }
6886
6887 static void iwl4965_bg_up(struct work_struct *data)
6888 {
6889         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
6890
6891         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6892                 return;
6893
6894         mutex_lock(&priv->mutex);
6895         __iwl4965_up(priv);
6896         mutex_unlock(&priv->mutex);
6897 }
6898
6899 static void iwl4965_bg_restart(struct work_struct *data)
6900 {
6901         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
6902
6903         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6904                 return;
6905
6906         iwl4965_down(priv);
6907         queue_work(priv->workqueue, &priv->up);
6908 }
6909
6910 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6911 {
6912         struct iwl4965_priv *priv =
6913             container_of(data, struct iwl4965_priv, rx_replenish);
6914
6915         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6916                 return;
6917
6918         mutex_lock(&priv->mutex);
6919         iwl4965_rx_replenish(priv);
6920         mutex_unlock(&priv->mutex);
6921 }
6922
6923 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6924
6925 static void iwl4965_bg_post_associate(struct work_struct *data)
6926 {
6927         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
6928                                              post_associate.work);
6929
6930         int rc = 0;
6931         struct ieee80211_conf *conf = NULL;
6932         DECLARE_MAC_BUF(mac);
6933
6934         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6935                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6936                 return;
6937         }
6938
6939         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6940                         priv->assoc_id,
6941                         print_mac(mac, priv->active_rxon.bssid_addr));
6942
6943
6944         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6945                 return;
6946
6947         mutex_lock(&priv->mutex);
6948
6949         if (!priv->vif || !priv->is_open) {
6950                 mutex_unlock(&priv->mutex);
6951                 return;
6952         }
6953         iwl4965_scan_cancel_timeout(priv, 200);
6954
6955         conf = ieee80211_get_hw_conf(priv->hw);
6956
6957         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6958         iwl4965_commit_rxon(priv);
6959
6960         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6961         iwl4965_setup_rxon_timing(priv);
6962         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6963                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6964         if (rc)
6965                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6966                             "Attempting to continue.\n");
6967
6968         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6969
6970 #ifdef CONFIG_IWL4965_HT
6971         if (priv->current_ht_config.is_ht)
6972                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6973 #endif /* CONFIG_IWL4965_HT*/
6974         iwl4965_set_rxon_chain(priv);
6975         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6976
6977         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6978                         priv->assoc_id, priv->beacon_int);
6979
6980         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6981                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6982         else
6983                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6984
6985         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6986                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6987                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6988                 else
6989                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6990
6991                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6992                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6993
6994         }
6995
6996         iwl4965_commit_rxon(priv);
6997
6998         switch (priv->iw_mode) {
6999         case IEEE80211_IF_TYPE_STA:
7000                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7001                 break;
7002
7003         case IEEE80211_IF_TYPE_IBSS:
7004
7005                 /* clear out the station table */
7006                 iwl4965_clear_stations_table(priv);
7007
7008                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7009                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7010                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7011                 iwl4965_send_beacon_cmd(priv);
7012
7013                 break;
7014
7015         default:
7016                 IWL_ERROR("%s Should not be called in %d mode\n",
7017                                 __FUNCTION__, priv->iw_mode);
7018                 break;
7019         }
7020
7021         iwl4965_sequence_reset(priv);
7022
7023 #ifdef CONFIG_IWL4965_SENSITIVITY
7024         /* Enable Rx differential gain and sensitivity calibrations */
7025         iwl4965_chain_noise_reset(priv);
7026         priv->start_calib = 1;
7027 #endif /* CONFIG_IWL4965_SENSITIVITY */
7028
7029         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7030                 priv->assoc_station_added = 1;
7031
7032         iwl4965_activate_qos(priv, 0);
7033
7034         /* we have just associated, don't start scan too early */
7035         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7036         mutex_unlock(&priv->mutex);
7037 }
7038
7039 static void iwl4965_bg_abort_scan(struct work_struct *work)
7040 {
7041         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7042
7043         if (!iwl4965_is_ready(priv))
7044                 return;
7045
7046         mutex_lock(&priv->mutex);
7047
7048         set_bit(STATUS_SCAN_ABORTING, &priv->status);
7049         iwl4965_send_scan_abort(priv);
7050
7051         mutex_unlock(&priv->mutex);
7052 }
7053
7054 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7055
7056 static void iwl4965_bg_scan_completed(struct work_struct *work)
7057 {
7058         struct iwl4965_priv *priv =
7059             container_of(work, struct iwl4965_priv, scan_completed);
7060
7061         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7062
7063         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7064                 return;
7065
7066         if (test_bit(STATUS_CONF_PENDING, &priv->status))
7067                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
7068
7069         ieee80211_scan_completed(priv->hw);
7070
7071         /* Since setting the TXPOWER may have been deferred while
7072          * performing the scan, fire one off */
7073         mutex_lock(&priv->mutex);
7074         iwl4965_hw_reg_send_txpower(priv);
7075         mutex_unlock(&priv->mutex);
7076 }
7077
7078 /*****************************************************************************
7079  *
7080  * mac80211 entry point functions
7081  *
7082  *****************************************************************************/
7083
7084 #define UCODE_READY_TIMEOUT     (2 * HZ)
7085
7086 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7087 {
7088         struct iwl4965_priv *priv = hw->priv;
7089         int ret;
7090
7091         IWL_DEBUG_MAC80211("enter\n");
7092
7093         if (pci_enable_device(priv->pci_dev)) {
7094                 IWL_ERROR("Fail to pci_enable_device\n");
7095                 return -ENODEV;
7096         }
7097         pci_restore_state(priv->pci_dev);
7098         pci_enable_msi(priv->pci_dev);
7099
7100         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7101                           DRV_NAME, priv);
7102         if (ret) {
7103                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7104                 goto out_disable_msi;
7105         }
7106
7107         /* we should be verifying the device is ready to be opened */
7108         mutex_lock(&priv->mutex);
7109
7110         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7111         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7112          * ucode filename and max sizes are card-specific. */
7113
7114         if (!priv->ucode_code.len) {
7115                 ret = iwl4965_read_ucode(priv);
7116                 if (ret) {
7117                         IWL_ERROR("Could not read microcode: %d\n", ret);
7118                         mutex_unlock(&priv->mutex);
7119                         goto out_release_irq;
7120                 }
7121         }
7122
7123         ret = __iwl4965_up(priv);
7124
7125         mutex_unlock(&priv->mutex);
7126
7127         if (ret)
7128                 goto out_release_irq;
7129
7130         IWL_DEBUG_INFO("Start UP work done.\n");
7131
7132         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7133                 return 0;
7134
7135         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
7136          * mac80211 will not be run successfully. */
7137         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7138                         test_bit(STATUS_READY, &priv->status),
7139                         UCODE_READY_TIMEOUT);
7140         if (!ret) {
7141                 if (!test_bit(STATUS_READY, &priv->status)) {
7142                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7143                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
7144                         ret = -ETIMEDOUT;
7145                         goto out_release_irq;
7146                 }
7147         }
7148
7149         priv->is_open = 1;
7150         IWL_DEBUG_MAC80211("leave\n");
7151         return 0;
7152
7153 out_release_irq:
7154         free_irq(priv->pci_dev->irq, priv);
7155 out_disable_msi:
7156         pci_disable_msi(priv->pci_dev);
7157         pci_disable_device(priv->pci_dev);
7158         priv->is_open = 0;
7159         IWL_DEBUG_MAC80211("leave - failed\n");
7160         return ret;
7161 }
7162
7163 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7164 {
7165         struct iwl4965_priv *priv = hw->priv;
7166
7167         IWL_DEBUG_MAC80211("enter\n");
7168
7169         if (!priv->is_open) {
7170                 IWL_DEBUG_MAC80211("leave - skip\n");
7171                 return;
7172         }
7173
7174         priv->is_open = 0;
7175
7176         if (iwl4965_is_ready_rf(priv)) {
7177                 /* stop mac, cancel any scan request and clear
7178                  * RXON_FILTER_ASSOC_MSK BIT
7179                  */
7180                 mutex_lock(&priv->mutex);
7181                 iwl4965_scan_cancel_timeout(priv, 100);
7182                 cancel_delayed_work(&priv->post_associate);
7183                 mutex_unlock(&priv->mutex);
7184         }
7185
7186         iwl4965_down(priv);
7187
7188         flush_workqueue(priv->workqueue);
7189         free_irq(priv->pci_dev->irq, priv);
7190         pci_disable_msi(priv->pci_dev);
7191         pci_save_state(priv->pci_dev);
7192         pci_disable_device(priv->pci_dev);
7193
7194         IWL_DEBUG_MAC80211("leave\n");
7195 }
7196
7197 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7198                       struct ieee80211_tx_control *ctl)
7199 {
7200         struct iwl4965_priv *priv = hw->priv;
7201
7202         IWL_DEBUG_MAC80211("enter\n");
7203
7204         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7205                 IWL_DEBUG_MAC80211("leave - monitor\n");
7206                 return -1;
7207         }
7208
7209         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7210                      ctl->tx_rate->bitrate);
7211
7212         if (iwl4965_tx_skb(priv, skb, ctl))
7213                 dev_kfree_skb_any(skb);
7214
7215         IWL_DEBUG_MAC80211("leave\n");
7216         return 0;
7217 }
7218
7219 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7220                                  struct ieee80211_if_init_conf *conf)
7221 {
7222         struct iwl4965_priv *priv = hw->priv;
7223         unsigned long flags;
7224         DECLARE_MAC_BUF(mac);
7225
7226         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
7227
7228         if (priv->vif) {
7229                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
7230                 return -EOPNOTSUPP;
7231         }
7232
7233         spin_lock_irqsave(&priv->lock, flags);
7234         priv->vif = conf->vif;
7235
7236         spin_unlock_irqrestore(&priv->lock, flags);
7237
7238         mutex_lock(&priv->mutex);
7239
7240         if (conf->mac_addr) {
7241                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7242                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7243         }
7244
7245         if (iwl4965_is_ready(priv))
7246                 iwl4965_set_mode(priv, conf->type);
7247
7248         mutex_unlock(&priv->mutex);
7249
7250         IWL_DEBUG_MAC80211("leave\n");
7251         return 0;
7252 }
7253
7254 /**
7255  * iwl4965_mac_config - mac80211 config callback
7256  *
7257  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7258  * be set inappropriately and the driver currently sets the hardware up to
7259  * use it whenever needed.
7260  */
7261 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7262 {
7263         struct iwl4965_priv *priv = hw->priv;
7264         const struct iwl4965_channel_info *ch_info;
7265         unsigned long flags;
7266         int ret = 0;
7267
7268         mutex_lock(&priv->mutex);
7269         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
7270
7271         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7272
7273         if (!iwl4965_is_ready(priv)) {
7274                 IWL_DEBUG_MAC80211("leave - not ready\n");
7275                 ret = -EIO;
7276                 goto out;
7277         }
7278
7279         if (unlikely(!iwl4965_param_disable_hw_scan &&
7280                      test_bit(STATUS_SCANNING, &priv->status))) {
7281                 IWL_DEBUG_MAC80211("leave - scanning\n");
7282                 set_bit(STATUS_CONF_PENDING, &priv->status);
7283                 mutex_unlock(&priv->mutex);
7284                 return 0;
7285         }
7286
7287         spin_lock_irqsave(&priv->lock, flags);
7288
7289         ch_info = iwl4965_get_channel_info(priv, conf->channel->band,
7290                         ieee80211_frequency_to_channel(conf->channel->center_freq));
7291         if (!is_channel_valid(ch_info)) {
7292                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7293                 spin_unlock_irqrestore(&priv->lock, flags);
7294                 ret = -EINVAL;
7295                 goto out;
7296         }
7297
7298 #ifdef CONFIG_IWL4965_HT
7299         /* if we are switching from ht to 2.4 clear flags
7300          * from any ht related info since 2.4 does not
7301          * support ht */
7302         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
7303 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7304             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7305 #endif
7306         )
7307                 priv->staging_rxon.flags = 0;
7308 #endif /* CONFIG_IWL4965_HT */
7309
7310         iwl4965_set_rxon_channel(priv, conf->channel->band,
7311                 ieee80211_frequency_to_channel(conf->channel->center_freq));
7312
7313         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
7314
7315         /* The list of supported rates and rate mask can be different
7316          * for each band; since the band may have changed, reset
7317          * the rate mask to what mac80211 lists */
7318         iwl4965_set_rate(priv);
7319
7320         spin_unlock_irqrestore(&priv->lock, flags);
7321
7322 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7323         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7324                 iwl4965_hw_channel_switch(priv, conf->channel);
7325                 goto out;
7326         }
7327 #endif
7328
7329         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7330
7331         if (!conf->radio_enabled) {
7332                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7333                 goto out;
7334         }
7335
7336         if (iwl4965_is_rfkill(priv)) {
7337                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7338                 ret = -EIO;
7339                 goto out;
7340         }
7341
7342         iwl4965_set_rate(priv);
7343
7344         if (memcmp(&priv->active_rxon,
7345                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7346                 iwl4965_commit_rxon(priv);
7347         else
7348                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7349
7350         IWL_DEBUG_MAC80211("leave\n");
7351
7352 out:
7353         clear_bit(STATUS_CONF_PENDING, &priv->status);
7354         mutex_unlock(&priv->mutex);
7355         return ret;
7356 }
7357
7358 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7359 {
7360         int rc = 0;
7361
7362         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7363                 return;
7364
7365         /* The following should be done only at AP bring up */
7366         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7367
7368                 /* RXON - unassoc (to set timing command) */
7369                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7370                 iwl4965_commit_rxon(priv);
7371
7372                 /* RXON Timing */
7373                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7374                 iwl4965_setup_rxon_timing(priv);
7375                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7376                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7377                 if (rc)
7378                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7379                                         "Attempting to continue.\n");
7380
7381                 iwl4965_set_rxon_chain(priv);
7382
7383                 /* FIXME: what should be the assoc_id for AP? */
7384                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7385                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7386                         priv->staging_rxon.flags |=
7387                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7388                 else
7389                         priv->staging_rxon.flags &=
7390                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7391
7392                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7393                         if (priv->assoc_capability &
7394                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7395                                 priv->staging_rxon.flags |=
7396                                         RXON_FLG_SHORT_SLOT_MSK;
7397                         else
7398                                 priv->staging_rxon.flags &=
7399                                         ~RXON_FLG_SHORT_SLOT_MSK;
7400
7401                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7402                                 priv->staging_rxon.flags &=
7403                                         ~RXON_FLG_SHORT_SLOT_MSK;
7404                 }
7405                 /* restore RXON assoc */
7406                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7407                 iwl4965_commit_rxon(priv);
7408                 iwl4965_activate_qos(priv, 1);
7409                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7410         }
7411         iwl4965_send_beacon_cmd(priv);
7412
7413         /* FIXME - we need to add code here to detect a totally new
7414          * configuration, reset the AP, unassoc, rxon timing, assoc,
7415          * clear sta table, add BCAST sta... */
7416 }
7417
7418 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
7419                                         struct ieee80211_vif *vif,
7420                                     struct ieee80211_if_conf *conf)
7421 {
7422         struct iwl4965_priv *priv = hw->priv;
7423         DECLARE_MAC_BUF(mac);
7424         unsigned long flags;
7425         int rc;
7426
7427         if (conf == NULL)
7428                 return -EIO;
7429
7430         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7431             (!conf->beacon || !conf->ssid_len)) {
7432                 IWL_DEBUG_MAC80211
7433                     ("Leaving in AP mode because HostAPD is not ready.\n");
7434                 return 0;
7435         }
7436
7437         if (!iwl4965_is_alive(priv))
7438                 return -EAGAIN;
7439
7440         mutex_lock(&priv->mutex);
7441
7442         if (conf->bssid)
7443                 IWL_DEBUG_MAC80211("bssid: %s\n",
7444                                    print_mac(mac, conf->bssid));
7445
7446 /*
7447  * very dubious code was here; the probe filtering flag is never set:
7448  *
7449         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7450             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7451  */
7452         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7453                 IWL_DEBUG_MAC80211("leave - scanning\n");
7454                 mutex_unlock(&priv->mutex);
7455                 return 0;
7456         }
7457
7458         if (priv->vif != vif) {
7459                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7460                 mutex_unlock(&priv->mutex);
7461                 return 0;
7462         }
7463
7464         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7465                 if (!conf->bssid) {
7466                         conf->bssid = priv->mac_addr;
7467                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7468                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7469                                            print_mac(mac, conf->bssid));
7470                 }
7471                 if (priv->ibss_beacon)
7472                         dev_kfree_skb(priv->ibss_beacon);
7473
7474                 priv->ibss_beacon = conf->beacon;
7475         }
7476
7477         if (iwl4965_is_rfkill(priv))
7478                 goto done;
7479
7480         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7481             !is_multicast_ether_addr(conf->bssid)) {
7482                 /* If there is currently a HW scan going on in the background
7483                  * then we need to cancel it else the RXON below will fail. */
7484                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7485                         IWL_WARNING("Aborted scan still in progress "
7486                                     "after 100ms\n");
7487                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7488                         mutex_unlock(&priv->mutex);
7489                         return -EAGAIN;
7490                 }
7491                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7492
7493                 /* TODO: Audit driver for usage of these members and see
7494                  * if mac80211 deprecates them (priv->bssid looks like it
7495                  * shouldn't be there, but I haven't scanned the IBSS code
7496                  * to verify) - jpk */
7497                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7498
7499                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7500                         iwl4965_config_ap(priv);
7501                 else {
7502                         rc = iwl4965_commit_rxon(priv);
7503                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7504                                 iwl4965_rxon_add_station(
7505                                         priv, priv->active_rxon.bssid_addr, 1);
7506                 }
7507
7508         } else {
7509                 iwl4965_scan_cancel_timeout(priv, 100);
7510                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7511                 iwl4965_commit_rxon(priv);
7512         }
7513
7514  done:
7515         spin_lock_irqsave(&priv->lock, flags);
7516         if (!conf->ssid_len)
7517                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7518         else
7519                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7520
7521         priv->essid_len = conf->ssid_len;
7522         spin_unlock_irqrestore(&priv->lock, flags);
7523
7524         IWL_DEBUG_MAC80211("leave\n");
7525         mutex_unlock(&priv->mutex);
7526
7527         return 0;
7528 }
7529
7530 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7531                                  unsigned int changed_flags,
7532                                  unsigned int *total_flags,
7533                                  int mc_count, struct dev_addr_list *mc_list)
7534 {
7535         /*
7536          * XXX: dummy
7537          * see also iwl4965_connection_init_rx_config
7538          */
7539         *total_flags = 0;
7540 }
7541
7542 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7543                                      struct ieee80211_if_init_conf *conf)
7544 {
7545         struct iwl4965_priv *priv = hw->priv;
7546
7547         IWL_DEBUG_MAC80211("enter\n");
7548
7549         mutex_lock(&priv->mutex);
7550
7551         if (iwl4965_is_ready_rf(priv)) {
7552                 iwl4965_scan_cancel_timeout(priv, 100);
7553                 cancel_delayed_work(&priv->post_associate);
7554                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7555                 iwl4965_commit_rxon(priv);
7556         }
7557         if (priv->vif == conf->vif) {
7558                 priv->vif = NULL;
7559                 memset(priv->bssid, 0, ETH_ALEN);
7560                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7561                 priv->essid_len = 0;
7562         }
7563         mutex_unlock(&priv->mutex);
7564
7565         IWL_DEBUG_MAC80211("leave\n");
7566
7567 }
7568
7569 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
7570                                      struct ieee80211_vif *vif,
7571                                      struct ieee80211_bss_conf *bss_conf,
7572                                      u32 changes)
7573 {
7574         struct iwl4965_priv *priv = hw->priv;
7575
7576         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
7577                 if (bss_conf->use_short_preamble)
7578                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7579                 else
7580                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7581         }
7582
7583         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
7584                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
7585                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7586                 else
7587                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7588         }
7589
7590         if (changes & BSS_CHANGED_ASSOC) {
7591                 /*
7592                  * TODO:
7593                  * do stuff instead of sniffing assoc resp
7594                  */
7595         }
7596
7597         if (iwl4965_is_associated(priv))
7598                 iwl4965_send_rxon_assoc(priv);
7599 }
7600
7601 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7602 {
7603         int rc = 0;
7604         unsigned long flags;
7605         struct iwl4965_priv *priv = hw->priv;
7606
7607         IWL_DEBUG_MAC80211("enter\n");
7608
7609         mutex_lock(&priv->mutex);
7610         spin_lock_irqsave(&priv->lock, flags);
7611
7612         if (!iwl4965_is_ready_rf(priv)) {
7613                 rc = -EIO;
7614                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7615                 goto out_unlock;
7616         }
7617
7618         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7619                 rc = -EIO;
7620                 IWL_ERROR("ERROR: APs don't scan\n");
7621                 goto out_unlock;
7622         }
7623
7624         /* we don't schedule scan within next_scan_jiffies period */
7625         if (priv->next_scan_jiffies &&
7626                         time_after(priv->next_scan_jiffies, jiffies)) {
7627                 rc = -EAGAIN;
7628                 goto out_unlock;
7629         }
7630         /* if we just finished scan ask for delay */
7631         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7632                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
7633                 rc = -EAGAIN;
7634                 goto out_unlock;
7635         }
7636         if (len) {
7637                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7638                                iwl4965_escape_essid(ssid, len), (int)len);
7639
7640                 priv->one_direct_scan = 1;
7641                 priv->direct_ssid_len = (u8)
7642                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7643                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7644         } else
7645                 priv->one_direct_scan = 0;
7646
7647         rc = iwl4965_scan_initiate(priv);
7648
7649         IWL_DEBUG_MAC80211("leave\n");
7650
7651 out_unlock:
7652         spin_unlock_irqrestore(&priv->lock, flags);
7653         mutex_unlock(&priv->mutex);
7654
7655         return rc;
7656 }
7657
7658 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7659                            const u8 *local_addr, const u8 *addr,
7660                            struct ieee80211_key_conf *key)
7661 {
7662         struct iwl4965_priv *priv = hw->priv;
7663         DECLARE_MAC_BUF(mac);
7664         int rc = 0;
7665         u8 sta_id;
7666
7667         IWL_DEBUG_MAC80211("enter\n");
7668
7669         if (!iwl4965_param_hwcrypto) {
7670                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7671                 return -EOPNOTSUPP;
7672         }
7673
7674         if (is_zero_ether_addr(addr))
7675                 /* only support pairwise keys */
7676                 return -EOPNOTSUPP;
7677
7678         sta_id = iwl4965_hw_find_station(priv, addr);
7679         if (sta_id == IWL_INVALID_STATION) {
7680                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7681                                    print_mac(mac, addr));
7682                 return -EINVAL;
7683         }
7684
7685         mutex_lock(&priv->mutex);
7686
7687         iwl4965_scan_cancel_timeout(priv, 100);
7688
7689         switch (cmd) {
7690         case  SET_KEY:
7691                 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7692                 if (!rc) {
7693                         iwl4965_set_rxon_hwcrypto(priv, 1);
7694                         iwl4965_commit_rxon(priv);
7695                         key->hw_key_idx = sta_id;
7696                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7697                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7698                 }
7699                 break;
7700         case DISABLE_KEY:
7701                 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7702                 if (!rc) {
7703                         iwl4965_set_rxon_hwcrypto(priv, 0);
7704                         iwl4965_commit_rxon(priv);
7705                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7706                 }
7707                 break;
7708         default:
7709                 rc = -EINVAL;
7710         }
7711
7712         IWL_DEBUG_MAC80211("leave\n");
7713         mutex_unlock(&priv->mutex);
7714
7715         return rc;
7716 }
7717
7718 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7719                            const struct ieee80211_tx_queue_params *params)
7720 {
7721         struct iwl4965_priv *priv = hw->priv;
7722         unsigned long flags;
7723         int q;
7724
7725         IWL_DEBUG_MAC80211("enter\n");
7726
7727         if (!iwl4965_is_ready_rf(priv)) {
7728                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7729                 return -EIO;
7730         }
7731
7732         if (queue >= AC_NUM) {
7733                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7734                 return 0;
7735         }
7736
7737         if (!priv->qos_data.qos_enable) {
7738                 priv->qos_data.qos_active = 0;
7739                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7740                 return 0;
7741         }
7742         q = AC_NUM - 1 - queue;
7743
7744         spin_lock_irqsave(&priv->lock, flags);
7745
7746         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7747         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7748         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7749         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7750                         cpu_to_le16((params->txop * 32));
7751
7752         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7753         priv->qos_data.qos_active = 1;
7754
7755         spin_unlock_irqrestore(&priv->lock, flags);
7756
7757         mutex_lock(&priv->mutex);
7758         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7759                 iwl4965_activate_qos(priv, 1);
7760         else if (priv->assoc_id && iwl4965_is_associated(priv))
7761                 iwl4965_activate_qos(priv, 0);
7762
7763         mutex_unlock(&priv->mutex);
7764
7765         IWL_DEBUG_MAC80211("leave\n");
7766         return 0;
7767 }
7768
7769 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7770                                 struct ieee80211_tx_queue_stats *stats)
7771 {
7772         struct iwl4965_priv *priv = hw->priv;
7773         int i, avail;
7774         struct iwl4965_tx_queue *txq;
7775         struct iwl4965_queue *q;
7776         unsigned long flags;
7777
7778         IWL_DEBUG_MAC80211("enter\n");
7779
7780         if (!iwl4965_is_ready_rf(priv)) {
7781                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7782                 return -EIO;
7783         }
7784
7785         spin_lock_irqsave(&priv->lock, flags);
7786
7787         for (i = 0; i < AC_NUM; i++) {
7788                 txq = &priv->txq[i];
7789                 q = &txq->q;
7790                 avail = iwl4965_queue_space(q);
7791
7792                 stats->data[i].len = q->n_window - avail;
7793                 stats->data[i].limit = q->n_window - q->high_mark;
7794                 stats->data[i].count = q->n_window;
7795
7796         }
7797         spin_unlock_irqrestore(&priv->lock, flags);
7798
7799         IWL_DEBUG_MAC80211("leave\n");
7800
7801         return 0;
7802 }
7803
7804 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7805                              struct ieee80211_low_level_stats *stats)
7806 {
7807         IWL_DEBUG_MAC80211("enter\n");
7808         IWL_DEBUG_MAC80211("leave\n");
7809
7810         return 0;
7811 }
7812
7813 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7814 {
7815         IWL_DEBUG_MAC80211("enter\n");
7816         IWL_DEBUG_MAC80211("leave\n");
7817
7818         return 0;
7819 }
7820
7821 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7822 {
7823         struct iwl4965_priv *priv = hw->priv;
7824         unsigned long flags;
7825
7826         mutex_lock(&priv->mutex);
7827         IWL_DEBUG_MAC80211("enter\n");
7828
7829         priv->lq_mngr.lq_ready = 0;
7830 #ifdef CONFIG_IWL4965_HT
7831         spin_lock_irqsave(&priv->lock, flags);
7832         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7833         spin_unlock_irqrestore(&priv->lock, flags);
7834 #endif /* CONFIG_IWL4965_HT */
7835
7836         iwl4965_reset_qos(priv);
7837
7838         cancel_delayed_work(&priv->post_associate);
7839
7840         spin_lock_irqsave(&priv->lock, flags);
7841         priv->assoc_id = 0;
7842         priv->assoc_capability = 0;
7843         priv->call_post_assoc_from_beacon = 0;
7844         priv->assoc_station_added = 0;
7845
7846         /* new association get rid of ibss beacon skb */
7847         if (priv->ibss_beacon)
7848                 dev_kfree_skb(priv->ibss_beacon);
7849
7850         priv->ibss_beacon = NULL;
7851
7852         priv->beacon_int = priv->hw->conf.beacon_int;
7853         priv->timestamp1 = 0;
7854         priv->timestamp0 = 0;
7855         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7856                 priv->beacon_int = 0;
7857
7858         spin_unlock_irqrestore(&priv->lock, flags);
7859
7860         if (!iwl4965_is_ready_rf(priv)) {
7861                 IWL_DEBUG_MAC80211("leave - not ready\n");
7862                 mutex_unlock(&priv->mutex);
7863                 return;
7864         }
7865
7866         /* we are restarting association process
7867          * clear RXON_FILTER_ASSOC_MSK bit
7868          */
7869         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7870                 iwl4965_scan_cancel_timeout(priv, 100);
7871                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7872                 iwl4965_commit_rxon(priv);
7873         }
7874
7875         /* Per mac80211.h: This is only used in IBSS mode... */
7876         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7877
7878                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7879                 mutex_unlock(&priv->mutex);
7880                 return;
7881         }
7882
7883         priv->only_active_channel = 0;
7884
7885         iwl4965_set_rate(priv);
7886
7887         mutex_unlock(&priv->mutex);
7888
7889         IWL_DEBUG_MAC80211("leave\n");
7890 }
7891
7892 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7893                                  struct ieee80211_tx_control *control)
7894 {
7895         struct iwl4965_priv *priv = hw->priv;
7896         unsigned long flags;
7897
7898         mutex_lock(&priv->mutex);
7899         IWL_DEBUG_MAC80211("enter\n");
7900
7901         if (!iwl4965_is_ready_rf(priv)) {
7902                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7903                 mutex_unlock(&priv->mutex);
7904                 return -EIO;
7905         }
7906
7907         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7908                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7909                 mutex_unlock(&priv->mutex);
7910                 return -EIO;
7911         }
7912
7913         spin_lock_irqsave(&priv->lock, flags);
7914
7915         if (priv->ibss_beacon)
7916                 dev_kfree_skb(priv->ibss_beacon);
7917
7918         priv->ibss_beacon = skb;
7919
7920         priv->assoc_id = 0;
7921
7922         IWL_DEBUG_MAC80211("leave\n");
7923         spin_unlock_irqrestore(&priv->lock, flags);
7924
7925         iwl4965_reset_qos(priv);
7926
7927         queue_work(priv->workqueue, &priv->post_associate.work);
7928
7929         mutex_unlock(&priv->mutex);
7930
7931         return 0;
7932 }
7933
7934 #ifdef CONFIG_IWL4965_HT
7935
7936 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7937                                  struct iwl4965_priv *priv)
7938 {
7939         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7940         struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7941         struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7942
7943         IWL_DEBUG_MAC80211("enter: \n");
7944
7945         if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7946                 iwl_conf->is_ht = 0;
7947                 return;
7948         }
7949
7950         iwl_conf->is_ht = 1;
7951         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7952
7953         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7954                 iwl_conf->sgf |= 0x1;
7955         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7956                 iwl_conf->sgf |= 0x2;
7957
7958         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7959         iwl_conf->max_amsdu_size =
7960                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7961
7962         iwl_conf->supported_chan_width =
7963                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7964         iwl_conf->extension_chan_offset =
7965                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7966         /* If no above or below channel supplied disable FAT channel */
7967         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7968             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7969                 iwl_conf->supported_chan_width = 0;
7970
7971         iwl_conf->tx_mimo_ps_mode =
7972                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7973         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7974
7975         iwl_conf->control_channel = ht_bss_conf->primary_channel;
7976         iwl_conf->tx_chan_width =
7977                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7978         iwl_conf->ht_protection =
7979                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7980         iwl_conf->non_GF_STA_present =
7981                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7982
7983         IWL_DEBUG_MAC80211("control channel %d\n",
7984                 iwl_conf->control_channel);
7985         IWL_DEBUG_MAC80211("leave\n");
7986 }
7987
7988 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7989                                struct ieee80211_conf *conf)
7990 {
7991         struct iwl4965_priv *priv = hw->priv;
7992
7993         IWL_DEBUG_MAC80211("enter: \n");
7994
7995         iwl4965_ht_info_fill(conf, priv);
7996         iwl4965_set_rxon_chain(priv);
7997
7998         if (priv && priv->assoc_id &&
7999             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8000                 unsigned long flags;
8001
8002                 spin_lock_irqsave(&priv->lock, flags);
8003                 if (priv->beacon_int)
8004                         queue_work(priv->workqueue, &priv->post_associate.work);
8005                 else
8006                         priv->call_post_assoc_from_beacon = 1;
8007                 spin_unlock_irqrestore(&priv->lock, flags);
8008         }
8009
8010         IWL_DEBUG_MAC80211("leave:\n");
8011         return 0;
8012 }
8013
8014 #endif /*CONFIG_IWL4965_HT*/
8015
8016 /*****************************************************************************
8017  *
8018  * sysfs attributes
8019  *
8020  *****************************************************************************/
8021
8022 #ifdef CONFIG_IWL4965_DEBUG
8023
8024 /*
8025  * The following adds a new attribute to the sysfs representation
8026  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8027  * used for controlling the debug level.
8028  *
8029  * See the level definitions in iwl for details.
8030  */
8031
8032 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8033 {
8034         return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8035 }
8036 static ssize_t store_debug_level(struct device_driver *d,
8037                                  const char *buf, size_t count)
8038 {
8039         char *p = (char *)buf;
8040         u32 val;
8041
8042         val = simple_strtoul(p, &p, 0);
8043         if (p == buf)
8044                 printk(KERN_INFO DRV_NAME
8045                        ": %s is not in hex or decimal form.\n", buf);
8046         else
8047                 iwl4965_debug_level = val;
8048
8049         return strnlen(buf, count);
8050 }
8051
8052 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8053                    show_debug_level, store_debug_level);
8054
8055 #endif /* CONFIG_IWL4965_DEBUG */
8056
8057 static ssize_t show_rf_kill(struct device *d,
8058                             struct device_attribute *attr, char *buf)
8059 {
8060         /*
8061          * 0 - RF kill not enabled
8062          * 1 - SW based RF kill active (sysfs)
8063          * 2 - HW based RF kill active
8064          * 3 - Both HW and SW based RF kill active
8065          */
8066         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8067         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8068                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8069
8070         return sprintf(buf, "%i\n", val);
8071 }
8072
8073 static ssize_t store_rf_kill(struct device *d,
8074                              struct device_attribute *attr,
8075                              const char *buf, size_t count)
8076 {
8077         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8078
8079         mutex_lock(&priv->mutex);
8080         iwl4965_radio_kill_sw(priv, buf[0] == '1');
8081         mutex_unlock(&priv->mutex);
8082
8083         return count;
8084 }
8085
8086 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8087
8088 static ssize_t show_temperature(struct device *d,
8089                                 struct device_attribute *attr, char *buf)
8090 {
8091         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8092
8093         if (!iwl4965_is_alive(priv))
8094                 return -EAGAIN;
8095
8096         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8097 }
8098
8099 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8100
8101 static ssize_t show_rs_window(struct device *d,
8102                               struct device_attribute *attr,
8103                               char *buf)
8104 {
8105         struct iwl4965_priv *priv = d->driver_data;
8106         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8107 }
8108 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8109
8110 static ssize_t show_tx_power(struct device *d,
8111                              struct device_attribute *attr, char *buf)
8112 {
8113         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8114         return sprintf(buf, "%d\n", priv->user_txpower_limit);
8115 }
8116
8117 static ssize_t store_tx_power(struct device *d,
8118                               struct device_attribute *attr,
8119                               const char *buf, size_t count)
8120 {
8121         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8122         char *p = (char *)buf;
8123         u32 val;
8124
8125         val = simple_strtoul(p, &p, 10);
8126         if (p == buf)
8127                 printk(KERN_INFO DRV_NAME
8128                        ": %s is not in decimal form.\n", buf);
8129         else
8130                 iwl4965_hw_reg_set_txpower(priv, val);
8131
8132         return count;
8133 }
8134
8135 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8136
8137 static ssize_t show_flags(struct device *d,
8138                           struct device_attribute *attr, char *buf)
8139 {
8140         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8141
8142         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8143 }
8144
8145 static ssize_t store_flags(struct device *d,
8146                            struct device_attribute *attr,
8147                            const char *buf, size_t count)
8148 {
8149         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8150         u32 flags = simple_strtoul(buf, NULL, 0);
8151
8152         mutex_lock(&priv->mutex);
8153         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8154                 /* Cancel any currently running scans... */
8155                 if (iwl4965_scan_cancel_timeout(priv, 100))
8156                         IWL_WARNING("Could not cancel scan.\n");
8157                 else {
8158                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8159                                        flags);
8160                         priv->staging_rxon.flags = cpu_to_le32(flags);
8161                         iwl4965_commit_rxon(priv);
8162                 }
8163         }
8164         mutex_unlock(&priv->mutex);
8165
8166         return count;
8167 }
8168
8169 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8170
8171 static ssize_t show_filter_flags(struct device *d,
8172                                  struct device_attribute *attr, char *buf)
8173 {
8174         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8175
8176         return sprintf(buf, "0x%04X\n",
8177                 le32_to_cpu(priv->active_rxon.filter_flags));
8178 }
8179
8180 static ssize_t store_filter_flags(struct device *d,
8181                                   struct device_attribute *attr,
8182                                   const char *buf, size_t count)
8183 {
8184         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8185         u32 filter_flags = simple_strtoul(buf, NULL, 0);
8186
8187         mutex_lock(&priv->mutex);
8188         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8189                 /* Cancel any currently running scans... */
8190                 if (iwl4965_scan_cancel_timeout(priv, 100))
8191                         IWL_WARNING("Could not cancel scan.\n");
8192                 else {
8193                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8194                                        "0x%04X\n", filter_flags);
8195                         priv->staging_rxon.filter_flags =
8196                                 cpu_to_le32(filter_flags);
8197                         iwl4965_commit_rxon(priv);
8198                 }
8199         }
8200         mutex_unlock(&priv->mutex);
8201
8202         return count;
8203 }
8204
8205 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8206                    store_filter_flags);
8207
8208 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8209
8210 static ssize_t show_measurement(struct device *d,
8211                                 struct device_attribute *attr, char *buf)
8212 {
8213         struct iwl4965_priv *priv = dev_get_drvdata(d);
8214         struct iwl4965_spectrum_notification measure_report;
8215         u32 size = sizeof(measure_report), len = 0, ofs = 0;
8216         u8 *data = (u8 *) & measure_report;
8217         unsigned long flags;
8218
8219         spin_lock_irqsave(&priv->lock, flags);
8220         if (!(priv->measurement_status & MEASUREMENT_READY)) {
8221                 spin_unlock_irqrestore(&priv->lock, flags);
8222                 return 0;
8223         }
8224         memcpy(&measure_report, &priv->measure_report, size);
8225         priv->measurement_status = 0;
8226         spin_unlock_irqrestore(&priv->lock, flags);
8227
8228         while (size && (PAGE_SIZE - len)) {
8229                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8230                                    PAGE_SIZE - len, 1);
8231                 len = strlen(buf);
8232                 if (PAGE_SIZE - len)
8233                         buf[len++] = '\n';
8234
8235                 ofs += 16;
8236                 size -= min(size, 16U);
8237         }
8238
8239         return len;
8240 }
8241
8242 static ssize_t store_measurement(struct device *d,
8243                                  struct device_attribute *attr,
8244                                  const char *buf, size_t count)
8245 {
8246         struct iwl4965_priv *priv = dev_get_drvdata(d);
8247         struct ieee80211_measurement_params params = {
8248                 .channel = le16_to_cpu(priv->active_rxon.channel),
8249                 .start_time = cpu_to_le64(priv->last_tsf),
8250                 .duration = cpu_to_le16(1),
8251         };
8252         u8 type = IWL_MEASURE_BASIC;
8253         u8 buffer[32];
8254         u8 channel;
8255
8256         if (count) {
8257                 char *p = buffer;
8258                 strncpy(buffer, buf, min(sizeof(buffer), count));
8259                 channel = simple_strtoul(p, NULL, 0);
8260                 if (channel)
8261                         params.channel = channel;
8262
8263                 p = buffer;
8264                 while (*p && *p != ' ')
8265                         p++;
8266                 if (*p)
8267                         type = simple_strtoul(p + 1, NULL, 0);
8268         }
8269
8270         IWL_DEBUG_INFO("Invoking measurement of type %d on "
8271                        "channel %d (for '%s')\n", type, params.channel, buf);
8272         iwl4965_get_measurement(priv, &params, type);
8273
8274         return count;
8275 }
8276
8277 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8278                    show_measurement, store_measurement);
8279 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8280
8281 static ssize_t store_retry_rate(struct device *d,
8282                                 struct device_attribute *attr,
8283                                 const char *buf, size_t count)
8284 {
8285         struct iwl4965_priv *priv = dev_get_drvdata(d);
8286
8287         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8288         if (priv->retry_rate <= 0)
8289                 priv->retry_rate = 1;
8290
8291         return count;
8292 }
8293
8294 static ssize_t show_retry_rate(struct device *d,
8295                                struct device_attribute *attr, char *buf)
8296 {
8297         struct iwl4965_priv *priv = dev_get_drvdata(d);
8298         return sprintf(buf, "%d", priv->retry_rate);
8299 }
8300
8301 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8302                    store_retry_rate);
8303
8304 static ssize_t store_power_level(struct device *d,
8305                                  struct device_attribute *attr,
8306                                  const char *buf, size_t count)
8307 {
8308         struct iwl4965_priv *priv = dev_get_drvdata(d);
8309         int rc;
8310         int mode;
8311
8312         mode = simple_strtoul(buf, NULL, 0);
8313         mutex_lock(&priv->mutex);
8314
8315         if (!iwl4965_is_ready(priv)) {
8316                 rc = -EAGAIN;
8317                 goto out;
8318         }
8319
8320         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8321                 mode = IWL_POWER_AC;
8322         else
8323                 mode |= IWL_POWER_ENABLED;
8324
8325         if (mode != priv->power_mode) {
8326                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8327                 if (rc) {
8328                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8329                         goto out;
8330                 }
8331                 priv->power_mode = mode;
8332         }
8333
8334         rc = count;
8335
8336  out:
8337         mutex_unlock(&priv->mutex);
8338         return rc;
8339 }
8340
8341 #define MAX_WX_STRING 80
8342
8343 /* Values are in microsecond */
8344 static const s32 timeout_duration[] = {
8345         350000,
8346         250000,
8347         75000,
8348         37000,
8349         25000,
8350 };
8351 static const s32 period_duration[] = {
8352         400000,
8353         700000,
8354         1000000,
8355         1000000,
8356         1000000
8357 };
8358
8359 static ssize_t show_power_level(struct device *d,
8360                                 struct device_attribute *attr, char *buf)
8361 {
8362         struct iwl4965_priv *priv = dev_get_drvdata(d);
8363         int level = IWL_POWER_LEVEL(priv->power_mode);
8364         char *p = buf;
8365
8366         p += sprintf(p, "%d ", level);
8367         switch (level) {
8368         case IWL_POWER_MODE_CAM:
8369         case IWL_POWER_AC:
8370                 p += sprintf(p, "(AC)");
8371                 break;
8372         case IWL_POWER_BATTERY:
8373                 p += sprintf(p, "(BATTERY)");
8374                 break;
8375         default:
8376                 p += sprintf(p,
8377                              "(Timeout %dms, Period %dms)",
8378                              timeout_duration[level - 1] / 1000,
8379                              period_duration[level - 1] / 1000);
8380         }
8381
8382         if (!(priv->power_mode & IWL_POWER_ENABLED))
8383                 p += sprintf(p, " OFF\n");
8384         else
8385                 p += sprintf(p, " \n");
8386
8387         return (p - buf + 1);
8388
8389 }
8390
8391 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8392                    store_power_level);
8393
8394 static ssize_t show_channels(struct device *d,
8395                              struct device_attribute *attr, char *buf)
8396 {
8397         /* all this shit doesn't belong into sysfs anyway */
8398         return 0;
8399 }
8400
8401 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8402
8403 static ssize_t show_statistics(struct device *d,
8404                                struct device_attribute *attr, char *buf)
8405 {
8406         struct iwl4965_priv *priv = dev_get_drvdata(d);
8407         u32 size = sizeof(struct iwl4965_notif_statistics);
8408         u32 len = 0, ofs = 0;
8409         u8 *data = (u8 *) & priv->statistics;
8410         int rc = 0;
8411
8412         if (!iwl4965_is_alive(priv))
8413                 return -EAGAIN;
8414
8415         mutex_lock(&priv->mutex);
8416         rc = iwl4965_send_statistics_request(priv);
8417         mutex_unlock(&priv->mutex);
8418
8419         if (rc) {
8420                 len = sprintf(buf,
8421                               "Error sending statistics request: 0x%08X\n", rc);
8422                 return len;
8423         }
8424
8425         while (size && (PAGE_SIZE - len)) {
8426                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8427                                    PAGE_SIZE - len, 1);
8428                 len = strlen(buf);
8429                 if (PAGE_SIZE - len)
8430                         buf[len++] = '\n';
8431
8432                 ofs += 16;
8433                 size -= min(size, 16U);
8434         }
8435
8436         return len;
8437 }
8438
8439 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8440
8441 static ssize_t show_antenna(struct device *d,
8442                             struct device_attribute *attr, char *buf)
8443 {
8444         struct iwl4965_priv *priv = dev_get_drvdata(d);
8445
8446         if (!iwl4965_is_alive(priv))
8447                 return -EAGAIN;
8448
8449         return sprintf(buf, "%d\n", priv->antenna);
8450 }
8451
8452 static ssize_t store_antenna(struct device *d,
8453                              struct device_attribute *attr,
8454                              const char *buf, size_t count)
8455 {
8456         int ant;
8457         struct iwl4965_priv *priv = dev_get_drvdata(d);
8458
8459         if (count == 0)
8460                 return 0;
8461
8462         if (sscanf(buf, "%1i", &ant) != 1) {
8463                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8464                 return count;
8465         }
8466
8467         if ((ant >= 0) && (ant <= 2)) {
8468                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8469                 priv->antenna = (enum iwl4965_antenna)ant;
8470         } else
8471                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8472
8473
8474         return count;
8475 }
8476
8477 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8478
8479 static ssize_t show_status(struct device *d,
8480                            struct device_attribute *attr, char *buf)
8481 {
8482         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8483         if (!iwl4965_is_alive(priv))
8484                 return -EAGAIN;
8485         return sprintf(buf, "0x%08x\n", (int)priv->status);
8486 }
8487
8488 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8489
8490 static ssize_t dump_error_log(struct device *d,
8491                               struct device_attribute *attr,
8492                               const char *buf, size_t count)
8493 {
8494         char *p = (char *)buf;
8495
8496         if (p[0] == '1')
8497                 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8498
8499         return strnlen(buf, count);
8500 }
8501
8502 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8503
8504 static ssize_t dump_event_log(struct device *d,
8505                               struct device_attribute *attr,
8506                               const char *buf, size_t count)
8507 {
8508         char *p = (char *)buf;
8509
8510         if (p[0] == '1')
8511                 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8512
8513         return strnlen(buf, count);
8514 }
8515
8516 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8517
8518 /*****************************************************************************
8519  *
8520  * driver setup and teardown
8521  *
8522  *****************************************************************************/
8523
8524 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8525 {
8526         priv->workqueue = create_workqueue(DRV_NAME);
8527
8528         init_waitqueue_head(&priv->wait_command_queue);
8529
8530         INIT_WORK(&priv->up, iwl4965_bg_up);
8531         INIT_WORK(&priv->restart, iwl4965_bg_restart);
8532         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8533         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8534         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8535         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8536         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8537         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8538         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8539         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8540         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8541         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8542
8543         iwl4965_hw_setup_deferred_work(priv);
8544
8545         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8546                      iwl4965_irq_tasklet, (unsigned long)priv);
8547 }
8548
8549 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
8550 {
8551         iwl4965_hw_cancel_deferred_work(priv);
8552
8553         cancel_delayed_work_sync(&priv->init_alive_start);
8554         cancel_delayed_work(&priv->scan_check);
8555         cancel_delayed_work(&priv->alive_start);
8556         cancel_delayed_work(&priv->post_associate);
8557         cancel_work_sync(&priv->beacon_update);
8558 }
8559
8560 static struct attribute *iwl4965_sysfs_entries[] = {
8561         &dev_attr_antenna.attr,
8562         &dev_attr_channels.attr,
8563         &dev_attr_dump_errors.attr,
8564         &dev_attr_dump_events.attr,
8565         &dev_attr_flags.attr,
8566         &dev_attr_filter_flags.attr,
8567 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8568         &dev_attr_measurement.attr,
8569 #endif
8570         &dev_attr_power_level.attr,
8571         &dev_attr_retry_rate.attr,
8572         &dev_attr_rf_kill.attr,
8573         &dev_attr_rs_window.attr,
8574         &dev_attr_statistics.attr,
8575         &dev_attr_status.attr,
8576         &dev_attr_temperature.attr,
8577         &dev_attr_tx_power.attr,
8578
8579         NULL
8580 };
8581
8582 static struct attribute_group iwl4965_attribute_group = {
8583         .name = NULL,           /* put in device directory */
8584         .attrs = iwl4965_sysfs_entries,
8585 };
8586
8587 static struct ieee80211_ops iwl4965_hw_ops = {
8588         .tx = iwl4965_mac_tx,
8589         .start = iwl4965_mac_start,
8590         .stop = iwl4965_mac_stop,
8591         .add_interface = iwl4965_mac_add_interface,
8592         .remove_interface = iwl4965_mac_remove_interface,
8593         .config = iwl4965_mac_config,
8594         .config_interface = iwl4965_mac_config_interface,
8595         .configure_filter = iwl4965_configure_filter,
8596         .set_key = iwl4965_mac_set_key,
8597         .get_stats = iwl4965_mac_get_stats,
8598         .get_tx_stats = iwl4965_mac_get_tx_stats,
8599         .conf_tx = iwl4965_mac_conf_tx,
8600         .get_tsf = iwl4965_mac_get_tsf,
8601         .reset_tsf = iwl4965_mac_reset_tsf,
8602         .beacon_update = iwl4965_mac_beacon_update,
8603         .bss_info_changed = iwl4965_bss_info_changed,
8604 #ifdef CONFIG_IWL4965_HT
8605         .conf_ht = iwl4965_mac_conf_ht,
8606         .ampdu_action = iwl4965_mac_ampdu_action,
8607 #endif  /* CONFIG_IWL4965_HT */
8608         .hw_scan = iwl4965_mac_hw_scan
8609 };
8610
8611 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8612 {
8613         int err = 0;
8614         struct iwl4965_priv *priv;
8615         struct ieee80211_hw *hw;
8616         int i;
8617         DECLARE_MAC_BUF(mac);
8618
8619         /* Disabling hardware scan means that mac80211 will perform scans
8620          * "the hard way", rather than using device's scan. */
8621         if (iwl4965_param_disable_hw_scan) {
8622                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8623                 iwl4965_hw_ops.hw_scan = NULL;
8624         }
8625
8626         if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8627             (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8628                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8629                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8630                 err = -EINVAL;
8631                 goto out;
8632         }
8633
8634         /* mac80211 allocates memory for this device instance, including
8635          *   space for this driver's private structure */
8636         hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
8637         if (hw == NULL) {
8638                 IWL_ERROR("Can not allocate network device\n");
8639                 err = -ENOMEM;
8640                 goto out;
8641         }
8642         SET_IEEE80211_DEV(hw, &pdev->dev);
8643
8644         hw->rate_control_algorithm = "iwl-4965-rs";
8645
8646         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8647         priv = hw->priv;
8648         priv->hw = hw;
8649
8650         priv->pci_dev = pdev;
8651         priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
8652 #ifdef CONFIG_IWL4965_DEBUG
8653         iwl4965_debug_level = iwl4965_param_debug;
8654         atomic_set(&priv->restrict_refcnt, 0);
8655 #endif
8656         priv->retry_rate = 1;
8657
8658         priv->ibss_beacon = NULL;
8659
8660         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8661          *   the range of signal quality values that we'll provide.
8662          * Negative values for level/noise indicate that we'll provide dBm.
8663          * For WE, at least, non-0 values here *enable* display of values
8664          *   in app (iwconfig). */
8665         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
8666         hw->max_noise = -20;    /* noise level, negative indicates dBm */
8667         hw->max_signal = 100;   /* link quality indication (%) */
8668
8669         /* Tell mac80211 our Tx characteristics */
8670         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8671
8672         /* Default value; 4 EDCA QOS priorities */
8673         hw->queues = 4;
8674 #ifdef CONFIG_IWL4965_HT
8675         /* Enhanced value; more queues, to support 11n aggregation */
8676         hw->queues = 16;
8677 #endif /* CONFIG_IWL4965_HT */
8678
8679         spin_lock_init(&priv->lock);
8680         spin_lock_init(&priv->power_data.lock);
8681         spin_lock_init(&priv->sta_lock);
8682         spin_lock_init(&priv->hcmd_lock);
8683         spin_lock_init(&priv->lq_mngr.lock);
8684
8685         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8686                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8687
8688         INIT_LIST_HEAD(&priv->free_frames);
8689
8690         mutex_init(&priv->mutex);
8691         if (pci_enable_device(pdev)) {
8692                 err = -ENODEV;
8693                 goto out_ieee80211_free_hw;
8694         }
8695
8696         pci_set_master(pdev);
8697
8698         /* Clear the driver's (not device's) station table */
8699         iwl4965_clear_stations_table(priv);
8700
8701         priv->data_retry_limit = -1;
8702         priv->ieee_channels = NULL;
8703         priv->ieee_rates = NULL;
8704         priv->band = IEEE80211_BAND_2GHZ;
8705
8706         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8707         if (!err)
8708                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8709         if (err) {
8710                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8711                 goto out_pci_disable_device;
8712         }
8713
8714         pci_set_drvdata(pdev, priv);
8715         err = pci_request_regions(pdev, DRV_NAME);
8716         if (err)
8717                 goto out_pci_disable_device;
8718
8719         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8720          * PCI Tx retries from interfering with C3 CPU state */
8721         pci_write_config_byte(pdev, 0x41, 0x00);
8722
8723         priv->hw_base = pci_iomap(pdev, 0, 0);
8724         if (!priv->hw_base) {
8725                 err = -ENODEV;
8726                 goto out_pci_release_regions;
8727         }
8728
8729         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8730                         (unsigned long long) pci_resource_len(pdev, 0));
8731         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8732
8733         /* Initialize module parameter values here */
8734
8735         /* Disable radio (SW RF KILL) via parameter when loading driver */
8736         if (iwl4965_param_disable) {
8737                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8738                 IWL_DEBUG_INFO("Radio disabled.\n");
8739         }
8740
8741         priv->iw_mode = IEEE80211_IF_TYPE_STA;
8742
8743         priv->ps_mode = 0;
8744         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
8745         priv->valid_antenna = 0x7;      /* assume all 3 connected */
8746         priv->ps_mode = IWL_MIMO_PS_NONE;
8747
8748         /* Choose which receivers/antennas to use */
8749         iwl4965_set_rxon_chain(priv);
8750
8751         printk(KERN_INFO DRV_NAME
8752                ": Detected Intel Wireless WiFi Link 4965AGN\n");
8753
8754         /* Device-specific setup */
8755         if (iwl4965_hw_set_hw_setting(priv)) {
8756                 IWL_ERROR("failed to set hw settings\n");
8757                 goto out_iounmap;
8758         }
8759
8760         if (iwl4965_param_qos_enable)
8761                 priv->qos_data.qos_enable = 1;
8762
8763         iwl4965_reset_qos(priv);
8764
8765         priv->qos_data.qos_active = 0;
8766         priv->qos_data.qos_cap.val = 0;
8767
8768         iwl4965_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8769         iwl4965_setup_deferred_work(priv);
8770         iwl4965_setup_rx_handlers(priv);
8771
8772         priv->rates_mask = IWL_RATES_MASK;
8773         /* If power management is turned on, default to AC mode */
8774         priv->power_mode = IWL_POWER_AC;
8775         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8776
8777         iwl4965_disable_interrupts(priv);
8778
8779         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8780         if (err) {
8781                 IWL_ERROR("failed to create sysfs device attributes\n");
8782                 goto out_release_irq;
8783         }
8784
8785         /* nic init */
8786         iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8787                     CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8788
8789         iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8790         err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
8791                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8792                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8793         if (err < 0) {
8794                 IWL_DEBUG_INFO("Failed to init the card\n");
8795                 goto out_remove_sysfs;
8796         }
8797         /* Read the EEPROM */
8798         err = iwl4965_eeprom_init(priv);
8799         if (err) {
8800                 IWL_ERROR("Unable to init EEPROM\n");
8801                 goto out_remove_sysfs;
8802         }
8803         /* MAC Address location in EEPROM same for 3945/4965 */
8804         get_eeprom_mac(priv, priv->mac_addr);
8805         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8806         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8807
8808         err = iwl4965_init_channel_map(priv);
8809         if (err) {
8810                 IWL_ERROR("initializing regulatory failed: %d\n", err);
8811                 goto out_remove_sysfs;
8812         }
8813
8814         err = iwl4965_init_geos(priv);
8815         if (err) {
8816                 IWL_ERROR("initializing geos failed: %d\n", err);
8817                 goto out_free_channel_map;
8818         }
8819
8820         iwl4965_rate_control_register(priv->hw);
8821         err = ieee80211_register_hw(priv->hw);
8822         if (err) {
8823                 IWL_ERROR("Failed to register network device (error %d)\n", err);
8824                 goto out_free_geos;
8825         }
8826
8827         priv->hw->conf.beacon_int = 100;
8828         priv->mac80211_registered = 1;
8829         pci_save_state(pdev);
8830         pci_disable_device(pdev);
8831
8832         return 0;
8833
8834  out_free_geos:
8835         iwl4965_free_geos(priv);
8836  out_free_channel_map:
8837         iwl4965_free_channel_map(priv);
8838  out_remove_sysfs:
8839         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8840
8841  out_release_irq:
8842         destroy_workqueue(priv->workqueue);
8843         priv->workqueue = NULL;
8844         iwl4965_unset_hw_setting(priv);
8845
8846  out_iounmap:
8847         pci_iounmap(pdev, priv->hw_base);
8848  out_pci_release_regions:
8849         pci_release_regions(pdev);
8850  out_pci_disable_device:
8851         pci_disable_device(pdev);
8852         pci_set_drvdata(pdev, NULL);
8853  out_ieee80211_free_hw:
8854         ieee80211_free_hw(priv->hw);
8855  out:
8856         return err;
8857 }
8858
8859 static void iwl4965_pci_remove(struct pci_dev *pdev)
8860 {
8861         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8862         struct list_head *p, *q;
8863         int i;
8864
8865         if (!priv)
8866                 return;
8867
8868         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8869
8870         set_bit(STATUS_EXIT_PENDING, &priv->status);
8871
8872         iwl4965_down(priv);
8873
8874         /* Free MAC hash list for ADHOC */
8875         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8876                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8877                         list_del(p);
8878                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8879                 }
8880         }
8881
8882         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8883
8884         iwl4965_dealloc_ucode_pci(priv);
8885
8886         if (priv->rxq.bd)
8887                 iwl4965_rx_queue_free(priv, &priv->rxq);
8888         iwl4965_hw_txq_ctx_free(priv);
8889
8890         iwl4965_unset_hw_setting(priv);
8891         iwl4965_clear_stations_table(priv);
8892
8893         if (priv->mac80211_registered) {
8894                 ieee80211_unregister_hw(priv->hw);
8895                 iwl4965_rate_control_unregister(priv->hw);
8896         }
8897
8898         /*netif_stop_queue(dev); */
8899         flush_workqueue(priv->workqueue);
8900
8901         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8902          * priv->workqueue... so we can't take down the workqueue
8903          * until now... */
8904         destroy_workqueue(priv->workqueue);
8905         priv->workqueue = NULL;
8906
8907         pci_iounmap(pdev, priv->hw_base);
8908         pci_release_regions(pdev);
8909         pci_disable_device(pdev);
8910         pci_set_drvdata(pdev, NULL);
8911
8912         iwl4965_free_channel_map(priv);
8913         iwl4965_free_geos(priv);
8914
8915         if (priv->ibss_beacon)
8916                 dev_kfree_skb(priv->ibss_beacon);
8917
8918         ieee80211_free_hw(priv->hw);
8919 }
8920
8921 #ifdef CONFIG_PM
8922
8923 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8924 {
8925         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8926
8927         if (priv->is_open) {
8928                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8929                 iwl4965_mac_stop(priv->hw);
8930                 priv->is_open = 1;
8931         }
8932
8933         pci_set_power_state(pdev, PCI_D3hot);
8934
8935         return 0;
8936 }
8937
8938 static int iwl4965_pci_resume(struct pci_dev *pdev)
8939 {
8940         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8941
8942         pci_set_power_state(pdev, PCI_D0);
8943
8944         if (priv->is_open)
8945                 iwl4965_mac_start(priv->hw);
8946
8947         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8948         return 0;
8949 }
8950
8951 #endif /* CONFIG_PM */
8952
8953 /*****************************************************************************
8954  *
8955  * driver and module entry point
8956  *
8957  *****************************************************************************/
8958
8959 static struct pci_driver iwl4965_driver = {
8960         .name = DRV_NAME,
8961         .id_table = iwl4965_hw_card_ids,
8962         .probe = iwl4965_pci_probe,
8963         .remove = __devexit_p(iwl4965_pci_remove),
8964 #ifdef CONFIG_PM
8965         .suspend = iwl4965_pci_suspend,
8966         .resume = iwl4965_pci_resume,
8967 #endif
8968 };
8969
8970 static int __init iwl4965_init(void)
8971 {
8972
8973         int ret;
8974         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8975         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8976         ret = pci_register_driver(&iwl4965_driver);
8977         if (ret) {
8978                 IWL_ERROR("Unable to initialize PCI module\n");
8979                 return ret;
8980         }
8981 #ifdef CONFIG_IWL4965_DEBUG
8982         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8983         if (ret) {
8984                 IWL_ERROR("Unable to create driver sysfs file\n");
8985                 pci_unregister_driver(&iwl4965_driver);
8986                 return ret;
8987         }
8988 #endif
8989
8990         return ret;
8991 }
8992
8993 static void __exit iwl4965_exit(void)
8994 {
8995 #ifdef CONFIG_IWL4965_DEBUG
8996         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8997 #endif
8998         pci_unregister_driver(&iwl4965_driver);
8999 }
9000
9001 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9002 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9003 module_param_named(disable, iwl4965_param_disable, int, 0444);
9004 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9005 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9006 MODULE_PARM_DESC(hwcrypto,
9007                  "using hardware crypto engine (default 0 [software])\n");
9008 module_param_named(debug, iwl4965_param_debug, int, 0444);
9009 MODULE_PARM_DESC(debug, "debug output mask");
9010 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9011 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9012
9013 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9014 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9015
9016 /* QoS */
9017 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9018 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9019 module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
9020 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
9021
9022 module_exit(iwl4965_exit);
9023 module_init(iwl4965_init);