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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-4965.h"
  49 #include "iwl-helpers.h"
  50
  51 #ifdef CONFIG_IWL4965_DEBUG
  52 u32 iwl4965_debug_level;
  53 #endif
  54
  55 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
  56                                   struct iwl4965_tx_queue *txq);
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /* module parameters */
  65 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
  66 static int iwl4965_param_debug;    /* def: 0 = minimal debug log messages */
  67 static int iwl4965_param_disable;  /* def: enable radio */
  68 static int iwl4965_param_antenna;  /* def: 0 = both antennas (use diversity) */
  69 int iwl4965_param_hwcrypto;        /* def: using software encryption */
  70 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
  71 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
  72 int iwl4965_param_amsdu_size_8K;   /* def: enable 8K amsdu size */
  73
  74 /*
  75  * module name, copyright, version, etc.
  76  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  77  */
  78
  79 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  80
  81 #ifdef CONFIG_IWL4965_DEBUG
  82 #define VD "d"
  83 #else
  84 #define VD
  85 #endif
  86
  87 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  88 #define VS "s"
  89 #else
  90 #define VS
  91 #endif
  92
  93 #define IWLWIFI_VERSION "1.2.23k" VD VS
  94 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
  95 #define DRV_VERSION     IWLWIFI_VERSION
  96
  97 /* Change firmware file name, using "-" and incrementing number,
  98  *   *only* when uCode interface or architecture changes so that it
  99  *   is not compatible with earlier drivers.
 100  * This number will also appear in << 8 position of 1st dword of uCode file */
 101 #define IWL4965_UCODE_API "-1"
 102
 103 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 104 MODULE_VERSION(DRV_VERSION);
 105 MODULE_AUTHOR(DRV_COPYRIGHT);
 106 MODULE_LICENSE("GPL");
 107
 108 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
 109 {
 110         u16 fc = le16_to_cpu(hdr->frame_control);
 111         int hdr_len = ieee80211_get_hdrlen(fc);
 112
 113         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 114                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 115         return NULL;
 116 }
 117
 118 static const struct ieee80211_hw_mode *iwl4965_get_hw_mode(
 119                 struct iwl4965_priv *priv, int mode)
 120 {
 121         int i;
 122
 123         for (i = 0; i < 3; i++)
 124                 if (priv->modes[i].mode == mode)
 125                         return &priv->modes[i];
 126
 127         return NULL;
 128 }
 129
 130 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 131 {
 132         /* Single white space is for Linksys APs */
 133         if (essid_len == 1 && essid[0] == ' ')
 134                 return 1;
 135
 136         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 137         while (essid_len) {
 138                 essid_len--;
 139                 if (essid[essid_len] != '\0')
 140                         return 0;
 141         }
 142
 143         return 1;
 144 }
 145
 146 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 147 {
 148         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 149         const char *s = essid;
 150         char *d = escaped;
 151
 152         if (iwl4965_is_empty_essid(essid, essid_len)) {
 153                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 154                 return escaped;
 155         }
 156
 157         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 158         while (essid_len--) {
 159                 if (*s == '\0') {
 160                         *d++ = '\\';
 161                         *d++ = '0';
 162                         s++;
 163                 } else
 164                         *d++ = *s++;
 165         }
 166         *d = '\0';
 167         return escaped;
 168 }
 169
 170 static void iwl4965_print_hex_dump(int level, void *p, u32 len)
 171 {
 172 #ifdef CONFIG_IWL4965_DEBUG
 173         if (!(iwl4965_debug_level & level))
 174                 return;
 175
 176         print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
 177                         p, len, 1);
 178 #endif
 179 }
 180
 181 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 182  * DMA services
 183  *
 184  * Theory of operation
 185  *
 186  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 187  * of buffer descriptors, each of which points to one or more data buffers for
 188  * the device to read from or fill.  Driver and device exchange status of each
 189  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 190  * entries in each circular buffer, to protect against confusing empty and full
 191  * queue states.
 192  *
 193  * The device reads or writes the data in the queues via the device's several
 194  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 195  *
 196  * For Tx queue, there are low mark and high mark limits. If, after queuing
 197  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 198  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 199  * Tx queue resumed.
 200  *
 201  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 202  * queue (#4) for sending commands to the device firmware, and 15 other
 203  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 204  *
 205  * See more detailed info in iwl-4965-hw.h.
 206  ***************************************************/
 207
 208 int iwl4965_queue_space(const struct iwl4965_queue *q)
 209 {
 210         int s = q->read_ptr - q->write_ptr;
 211
 212         if (q->read_ptr > q->write_ptr)
 213                 s -= q->n_bd;
 214
 215         if (s <= 0)
 216                 s += q->n_window;
 217         /* keep some reserve to not confuse empty and full situations */
 218         s -= 2;
 219         if (s < 0)
 220                 s = 0;
 221         return s;
 222 }
 223
 224 /**
 225  * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
 226  * @index -- current index
 227  * @n_bd -- total number of entries in queue (must be power of 2)
 228  */
 229 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
 230 {
 231         return ++index & (n_bd - 1);
 232 }
 233
 234 /**
 235  * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
 236  * @index -- current index
 237  * @n_bd -- total number of entries in queue (must be power of 2)
 238  */
 239 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
 240 {
 241         return --index & (n_bd - 1);
 242 }
 243
 244 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 245 {
 246         return q->write_ptr > q->read_ptr ?
 247                 (i >= q->read_ptr && i < q->write_ptr) :
 248                 !(i < q->read_ptr && i >= q->write_ptr);
 249 }
 250
 251 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 252 {
 253         /* This is for scan command, the big buffer at end of command array */
 254         if (is_huge)
 255                 return q->n_window;     /* must be power of 2 */
 256
 257         /* Otherwise, use normal size buffers */
 258         return index & (q->n_window - 1);
 259 }
 260
 261 /**
 262  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 263  */
 264 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
 265                           int count, int slots_num, u32 id)
 266 {
 267         q->n_bd = count;
 268         q->n_window = slots_num;
 269         q->id = id;
 270
 271         /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
 272          * and iwl4965_queue_dec_wrap are broken. */
 273         BUG_ON(!is_power_of_2(count));
 274
 275         /* slots_num must be power-of-two size, otherwise
 276          * get_cmd_index is broken. */
 277         BUG_ON(!is_power_of_2(slots_num));
 278
 279         q->low_mark = q->n_window / 4;
 280         if (q->low_mark < 4)
 281                 q->low_mark = 4;
 282
 283         q->high_mark = q->n_window / 8;
 284         if (q->high_mark < 2)
 285                 q->high_mark = 2;
 286
 287         q->write_ptr = q->read_ptr = 0;
 288
 289         return 0;
 290 }
 291
 292 /**
 293  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 294  */
 295 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
 296                               struct iwl4965_tx_queue *txq, u32 id)
 297 {
 298         struct pci_dev *dev = priv->pci_dev;
 299
 300         /* Driver private data, only for Tx (not command) queues,
 301          * not shared with device. */
 302         if (id != IWL_CMD_QUEUE_NUM) {
 303                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 304                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 305                 if (!txq->txb) {
 306                         IWL_ERROR("kmalloc for auxiliary BD "
 307                                   "structures failed\n");
 308                         goto error;
 309                 }
 310         } else
 311                 txq->txb = NULL;
 312
 313         /* Circular buffer of transmit frame descriptors (TFDs),
 314          * shared with device */
 315         txq->bd = pci_alloc_consistent(dev,
 316                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 317                         &txq->q.dma_addr);
 318
 319         if (!txq->bd) {
 320                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 321                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 322                 goto error;
 323         }
 324         txq->q.id = id;
 325
 326         return 0;
 327
 328  error:
 329         if (txq->txb) {
 330                 kfree(txq->txb);
 331                 txq->txb = NULL;
 332         }
 333
 334         return -ENOMEM;
 335 }
 336
 337 /**
 338  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 339  */
 340 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
 341                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 342 {
 343         struct pci_dev *dev = priv->pci_dev;
 344         int len;
 345         int rc = 0;
 346
 347         /*
 348          * Alloc buffer array for commands (Tx or other types of commands).
 349          * For the command queue (#4), allocate command space + one big
 350          * command for scan, since scan command is very huge; the system will
 351          * not have two scans at the same time, so only one is needed.
 352          * For normal Tx queues (all other queues), no super-size command
 353          * space is needed.
 354          */
 355         len = sizeof(struct iwl4965_cmd) * slots_num;
 356         if (txq_id == IWL_CMD_QUEUE_NUM)
 357                 len +=  IWL_MAX_SCAN_SIZE;
 358         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 359         if (!txq->cmd)
 360                 return -ENOMEM;
 361
 362         /* Alloc driver data array and TFD circular buffer */
 363         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 364         if (rc) {
 365                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 366
 367                 return -ENOMEM;
 368         }
 369         txq->need_update = 0;
 370
 371         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 372          * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
 373         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 374
 375         /* Initialize queue's high/low-water marks, and head/tail indexes */
 376         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 377
 378         /* Tell device where to find queue */
 379         iwl4965_hw_tx_queue_init(priv, txq);
 380
 381         return 0;
 382 }
 383
 384 /**
 385  * iwl4965_tx_queue_free - Deallocate DMA queue.
 386  * @txq: Transmit queue to deallocate.
 387  *
 388  * Empty queue by removing and destroying all BD's.
 389  * Free all buffers.
 390  * 0-fill, but do not free "txq" descriptor structure.
 391  */
 392 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
 393 {
 394         struct iwl4965_queue *q = &txq->q;
 395         struct pci_dev *dev = priv->pci_dev;
 396         int len;
 397
 398         if (q->n_bd == 0)
 399                 return;
 400
 401         /* first, empty all BD's */
 402         for (; q->write_ptr != q->read_ptr;
 403              q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
 404                 iwl4965_hw_txq_free_tfd(priv, txq);
 405
 406         len = sizeof(struct iwl4965_cmd) * q->n_window;
 407         if (q->id == IWL_CMD_QUEUE_NUM)
 408                 len += IWL_MAX_SCAN_SIZE;
 409
 410         /* De-alloc array of command/tx buffers */
 411         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 412
 413         /* De-alloc circular buffer of TFDs */
 414         if (txq->q.n_bd)
 415                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 416                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 417
 418         /* De-alloc array of per-TFD driver data */
 419         if (txq->txb) {
 420                 kfree(txq->txb);
 421                 txq->txb = NULL;
 422         }
 423
 424         /* 0-fill queue descriptor structure */
 425         memset(txq, 0, sizeof(*txq));
 426 }
 427
 428 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 429
 430 /*************** STATION TABLE MANAGEMENT ****
 431  * mac80211 should be examined to determine if sta_info is duplicating
 432  * the functionality provided here
 433  */
 434
 435 /**************************************************************/
 436
 437 #if 0 /* temporary disable till we add real remove station */
 438 /**
 439  * iwl4965_remove_station - Remove driver's knowledge of station.
 440  *
 441  * NOTE:  This does not remove station from device's station table.
 442  */
 443 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
 444 {
 445         int index = IWL_INVALID_STATION;
 446         int i;
 447         unsigned long flags;
 448
 449         spin_lock_irqsave(&priv->sta_lock, flags);
 450
 451         if (is_ap)
 452                 index = IWL_AP_ID;
 453         else if (is_broadcast_ether_addr(addr))
 454                 index = priv->hw_setting.bcast_sta_id;
 455         else
 456                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 457                         if (priv->stations[i].used &&
 458                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 459                                                 addr)) {
 460                                 index = i;
 461                                 break;
 462                         }
 463
 464         if (unlikely(index == IWL_INVALID_STATION))
 465                 goto out;
 466
 467         if (priv->stations[index].used) {
 468                 priv->stations[index].used = 0;
 469                 priv->num_stations--;
 470         }
 471
 472         BUG_ON(priv->num_stations < 0);
 473
 474 out:
 475         spin_unlock_irqrestore(&priv->sta_lock, flags);
 476         return 0;
 477 }
 478 #endif
 479
 480 /**
 481  * iwl4965_clear_stations_table - Clear the driver's station table
 482  *
 483  * NOTE:  This does not clear or otherwise alter the device's station table.
 484  */
 485 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
 486 {
 487         unsigned long flags;
 488
 489         spin_lock_irqsave(&priv->sta_lock, flags);
 490
 491         priv->num_stations = 0;
 492         memset(priv->stations, 0, sizeof(priv->stations));
 493
 494         spin_unlock_irqrestore(&priv->sta_lock, flags);
 495 }
 496
 497 /**
 498  * iwl4965_add_station_flags - Add station to tables in driver and device
 499  */
 500 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
 501                                 int is_ap, u8 flags, void *ht_data)
 502 {
 503         int i;
 504         int index = IWL_INVALID_STATION;
 505         struct iwl4965_station_entry *station;
 506         unsigned long flags_spin;
 507         DECLARE_MAC_BUF(mac);
 508
 509         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 510         if (is_ap)
 511                 index = IWL_AP_ID;
 512         else if (is_broadcast_ether_addr(addr))
 513                 index = priv->hw_setting.bcast_sta_id;
 514         else
 515                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 516                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 517                                                 addr)) {
 518                                 index = i;
 519                                 break;
 520                         }
 521
 522                         if (!priv->stations[i].used &&
 523                             index == IWL_INVALID_STATION)
 524                                 index = i;
 525                 }
 526
 527
 528         /* These two conditions have the same outcome, but keep them separate
 529           since they have different meanings */
 530         if (unlikely(index == IWL_INVALID_STATION)) {
 531                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 532                 return index;
 533         }
 534
 535         if (priv->stations[index].used &&
 536             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 537                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 538                 return index;
 539         }
 540
 541
 542         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 543         station = &priv->stations[index];
 544         station->used = 1;
 545         priv->num_stations++;
 546
 547         /* Set up the REPLY_ADD_STA command to send to device */
 548         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 549         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 550         station->sta.mode = 0;
 551         station->sta.sta.sta_id = index;
 552         station->sta.station_flags = 0;
 553
 554 #ifdef CONFIG_IWL4965_HT
 555         /* BCAST station and IBSS stations do not work in HT mode */
 556         if (index != priv->hw_setting.bcast_sta_id &&
 557             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 558                 iwl4965_set_ht_add_station(priv, index,
 559                                  (struct ieee80211_ht_info *) ht_data);
 560 #endif /*CONFIG_IWL4965_HT*/
 561
 562         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 563
 564         /* Add station to device's station table */
 565         iwl4965_send_add_station(priv, &station->sta, flags);
 566         return index;
 567
 568 }
 569
 570 /*************** DRIVER STATUS FUNCTIONS   *****/
 571
 572 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
 573 {
 574         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 575          * set but EXIT_PENDING is not */
 576         return test_bit(STATUS_READY, &priv->status) &&
 577                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 578                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 579 }
 580
 581 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
 582 {
 583         return test_bit(STATUS_ALIVE, &priv->status);
 584 }
 585
 586 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
 587 {
 588         return test_bit(STATUS_INIT, &priv->status);
 589 }
 590
 591 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
 592 {
 593         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 594                test_bit(STATUS_RF_KILL_SW, &priv->status);
 595 }
 596
 597 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
 598 {
 599
 600         if (iwl4965_is_rfkill(priv))
 601                 return 0;
 602
 603         return iwl4965_is_ready(priv);
 604 }
 605
 606 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 607
 608 #define IWL_CMD(x) case x : return #x
 609
 610 static const char *get_cmd_string(u8 cmd)
 611 {
 612         switch (cmd) {
 613                 IWL_CMD(REPLY_ALIVE);
 614                 IWL_CMD(REPLY_ERROR);
 615                 IWL_CMD(REPLY_RXON);
 616                 IWL_CMD(REPLY_RXON_ASSOC);
 617                 IWL_CMD(REPLY_QOS_PARAM);
 618                 IWL_CMD(REPLY_RXON_TIMING);
 619                 IWL_CMD(REPLY_ADD_STA);
 620                 IWL_CMD(REPLY_REMOVE_STA);
 621                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 622                 IWL_CMD(REPLY_TX);
 623                 IWL_CMD(REPLY_RATE_SCALE);
 624                 IWL_CMD(REPLY_LEDS_CMD);
 625                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 626                 IWL_CMD(RADAR_NOTIFICATION);
 627                 IWL_CMD(REPLY_QUIET_CMD);
 628                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 629                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 630                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 631                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 632                 IWL_CMD(POWER_TABLE_CMD);
 633                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 634                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 635                 IWL_CMD(REPLY_SCAN_CMD);
 636                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 637                 IWL_CMD(SCAN_START_NOTIFICATION);
 638                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 639                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 640                 IWL_CMD(BEACON_NOTIFICATION);
 641                 IWL_CMD(REPLY_TX_BEACON);
 642                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 643                 IWL_CMD(QUIET_NOTIFICATION);
 644                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 645                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 646                 IWL_CMD(REPLY_BT_CONFIG);
 647                 IWL_CMD(REPLY_STATISTICS_CMD);
 648                 IWL_CMD(STATISTICS_NOTIFICATION);
 649                 IWL_CMD(REPLY_CARD_STATE_CMD);
 650                 IWL_CMD(CARD_STATE_NOTIFICATION);
 651                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 652                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
 653                 IWL_CMD(SENSITIVITY_CMD);
 654                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
 655                 IWL_CMD(REPLY_RX_PHY_CMD);
 656                 IWL_CMD(REPLY_RX_MPDU_CMD);
 657                 IWL_CMD(REPLY_4965_RX);
 658                 IWL_CMD(REPLY_COMPRESSED_BA);
 659         default:
 660                 return "UNKNOWN";
 661
 662         }
 663 }
 664
 665 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 666
 667 /**
 668  * iwl4965_enqueue_hcmd - enqueue a uCode command
 669  * @priv: device private data point
 670  * @cmd: a point to the ucode command structure
 671  *
 672  * The function returns < 0 values to indicate the operation is
 673  * failed. On success, it turns the index (> 0) of command in the
 674  * command queue.
 675  */
 676 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 677 {
 678         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 679         struct iwl4965_queue *q = &txq->q;
 680         struct iwl4965_tfd_frame *tfd;
 681         u32 *control_flags;
 682         struct iwl4965_cmd *out_cmd;
 683         u32 idx;
 684         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 685         dma_addr_t phys_addr;
 686         int ret;
 687         unsigned long flags;
 688
 689         /* If any of the command structures end up being larger than
 690          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 691          * we will need to increase the size of the TFD entries */
 692         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 693                !(cmd->meta.flags & CMD_SIZE_HUGE));
 694
 695         if (iwl4965_is_rfkill(priv)) {
 696                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 697                 return -EIO;
 698         }
 699
 700         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 701                 IWL_ERROR("No space for Tx\n");
 702                 return -ENOSPC;
 703         }
 704
 705         spin_lock_irqsave(&priv->hcmd_lock, flags);
 706
 707         tfd = &txq->bd[q->write_ptr];
 708         memset(tfd, 0, sizeof(*tfd));
 709
 710         control_flags = (u32 *) tfd;
 711
 712         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 713         out_cmd = &txq->cmd[idx];
 714
 715         out_cmd->hdr.cmd = cmd->id;
 716         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 717         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 718
 719         /* At this point, the out_cmd now has all of the incoming cmd
 720          * information */
 721
 722         out_cmd->hdr.flags = 0;
 723         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 724                         INDEX_TO_SEQ(q->write_ptr));
 725         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 726                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 727
 728         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 729                         offsetof(struct iwl4965_cmd, hdr);
 730         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 731
 732         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 733                      "%d bytes at %d[%d]:%d\n",
 734                      get_cmd_string(out_cmd->hdr.cmd),
 735                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 736                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 737
 738         txq->need_update = 1;
 739
 740         /* Set up entry in queue's byte count circular buffer */
 741         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 742
 743         /* Increment and update queue's write index */
 744         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
 745         iwl4965_tx_queue_update_write_ptr(priv, txq);
 746
 747         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 748         return ret ? ret : idx;
 749 }
 750
 751 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 752 {
 753         int ret;
 754
 755         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 756
 757         /* An asynchronous command can not expect an SKB to be set. */
 758         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 759
 760         /* An asynchronous command MUST have a callback. */
 761         BUG_ON(!cmd->meta.u.callback);
 762
 763         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 764                 return -EBUSY;
 765
 766         ret = iwl4965_enqueue_hcmd(priv, cmd);
 767         if (ret < 0) {
 768                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 769                           get_cmd_string(cmd->id), ret);
 770                 return ret;
 771         }
 772         return 0;
 773 }
 774
 775 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 776 {
 777         int cmd_idx;
 778         int ret;
 779         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 780
 781         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 782
 783          /* A synchronous command can not have a callback set. */
 784         BUG_ON(cmd->meta.u.callback != NULL);
 785
 786         if (atomic_xchg(&entry, 1)) {
 787                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 788                           get_cmd_string(cmd->id));
 789                 return -EBUSY;
 790         }
 791
 792         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 793
 794         if (cmd->meta.flags & CMD_WANT_SKB)
 795                 cmd->meta.source = &cmd->meta;
 796
 797         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
 798         if (cmd_idx < 0) {
 799                 ret = cmd_idx;
 800                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 801                           get_cmd_string(cmd->id), ret);
 802                 goto out;
 803         }
 804
 805         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 806                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 807                         HOST_COMPLETE_TIMEOUT);
 808         if (!ret) {
 809                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 810                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 811                                   get_cmd_string(cmd->id),
 812                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 813
 814                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 815                         ret = -ETIMEDOUT;
 816                         goto cancel;
 817                 }
 818         }
 819
 820         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 821                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 822                                get_cmd_string(cmd->id));
 823                 ret = -ECANCELED;
 824                 goto fail;
 825         }
 826         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 827                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 828                                get_cmd_string(cmd->id));
 829                 ret = -EIO;
 830                 goto fail;
 831         }
 832         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 833                 IWL_ERROR("Error: Response NULL in '%s'\n",
 834                           get_cmd_string(cmd->id));
 835                 ret = -EIO;
 836                 goto out;
 837         }
 838
 839         ret = 0;
 840         goto out;
 841
 842 cancel:
 843         if (cmd->meta.flags & CMD_WANT_SKB) {
 844                 struct iwl4965_cmd *qcmd;
 845
 846                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 847                  * TX cmd queue. Otherwise in case the cmd comes
 848                  * in later, it will possibly set an invalid
 849                  * address (cmd->meta.source). */
 850                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 851                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 852         }
 853 fail:
 854         if (cmd->meta.u.skb) {
 855                 dev_kfree_skb_any(cmd->meta.u.skb);
 856                 cmd->meta.u.skb = NULL;
 857         }
 858 out:
 859         atomic_set(&entry, 0);
 860         return ret;
 861 }
 862
 863 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 864 {
 865         if (cmd->meta.flags & CMD_ASYNC)
 866                 return iwl4965_send_cmd_async(priv, cmd);
 867
 868         return iwl4965_send_cmd_sync(priv, cmd);
 869 }
 870
 871 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
 872 {
 873         struct iwl4965_host_cmd cmd = {
 874                 .id = id,
 875                 .len = len,
 876                 .data = data,
 877         };
 878
 879         return iwl4965_send_cmd_sync(priv, &cmd);
 880 }
 881
 882 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
 883 {
 884         struct iwl4965_host_cmd cmd = {
 885                 .id = id,
 886                 .len = sizeof(val),
 887                 .data = &val,
 888         };
 889
 890         return iwl4965_send_cmd_sync(priv, &cmd);
 891 }
 892
 893 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
 894 {
 895         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 896 }
 897
 898 /**
 899  * iwl4965_rxon_add_station - add station into station table.
 900  *
 901  * there is only one AP station with id= IWL_AP_ID
 902  * NOTE: mutex must be held before calling this fnction
 903  */
 904 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
 905                                 const u8 *addr, int is_ap)
 906 {
 907         u8 sta_id;
 908
 909         /* Add station to device's station table */
 910 #ifdef CONFIG_IWL4965_HT
 911         struct ieee80211_conf *conf = &priv->hw->conf;
 912         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 913
 914         if ((is_ap) &&
 915             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 916             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 917                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 918                                                    0, cur_ht_config);
 919         else
 920 #endif /* CONFIG_IWL4965_HT */
 921                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 922                                                    0, NULL);
 923
 924         /* Set up default rate scaling table in device's station table */
 925         iwl4965_add_station(priv, addr, is_ap);
 926
 927         return sta_id;
 928 }
 929
 930 /**
 931  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
 932  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 933  * @channel: Any channel valid for the requested phymode
 934
 935  * In addition to setting the staging RXON, priv->phymode is also set.
 936  *
 937  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 938  * in the staging RXON flag structure based on the phymode
 939  */
 940 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode,
 941                                  u16 channel)
 942 {
 943         if (!iwl4965_get_channel_info(priv, phymode, channel)) {
 944                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 945                                channel, phymode);
 946                 return -EINVAL;
 947         }
 948
 949         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 950             (priv->phymode == phymode))
 951                 return 0;
 952
 953         priv->staging_rxon.channel = cpu_to_le16(channel);
 954         if (phymode == MODE_IEEE80211A)
 955                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 956         else
 957                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 958
 959         priv->phymode = phymode;
 960
 961         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
 962
 963         return 0;
 964 }
 965
 966 /**
 967  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 968  *
 969  * NOTE:  This is really only useful during development and can eventually
 970  * be #ifdef'd out once the driver is stable and folks aren't actively
 971  * making changes
 972  */
 973 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 974 {
 975         int error = 0;
 976         int counter = 1;
 977
 978         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 979                 error |= le32_to_cpu(rxon->flags &
 980                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 981                                  RXON_FLG_RADAR_DETECT_MSK));
 982                 if (error)
 983                         IWL_WARNING("check 24G fields %d | %d\n",
 984                                     counter++, error);
 985         } else {
 986                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 987                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 988                 if (error)
 989                         IWL_WARNING("check 52 fields %d | %d\n",
 990                                     counter++, error);
 991                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 992                 if (error)
 993                         IWL_WARNING("check 52 CCK %d | %d\n",
 994                                     counter++, error);
 995         }
 996         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 997         if (error)
 998                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 999
1000         /* make sure basic rates 6Mbps and 1Mbps are supported */
1001         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
1002                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
1003         if (error)
1004                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
1005
1006         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
1007         if (error)
1008                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
1009
1010         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
1011                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
1012         if (error)
1013                 IWL_WARNING("check CCK and short slot %d | %d\n",
1014                             counter++, error);
1015
1016         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
1017                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1018         if (error)
1019                 IWL_WARNING("check CCK & auto detect %d | %d\n",
1020                             counter++, error);
1021
1022         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1023                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1024         if (error)
1025                 IWL_WARNING("check TGG and auto detect %d | %d\n",
1026                             counter++, error);
1027
1028         if (error)
1029                 IWL_WARNING("Tuning to channel %d\n",
1030                             le16_to_cpu(rxon->channel));
1031
1032         if (error) {
1033                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1034                 return -1;
1035         }
1036         return 0;
1037 }
1038
1039 /**
1040  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1041  * @priv: staging_rxon is compared to active_rxon
1042  *
1043  * If the RXON structure is changing enough to require a new tune,
1044  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1045  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1046  */
1047 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1048 {
1049
1050         /* These items are only settable from the full RXON command */
1051         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1052             compare_ether_addr(priv->staging_rxon.bssid_addr,
1053                                priv->active_rxon.bssid_addr) ||
1054             compare_ether_addr(priv->staging_rxon.node_addr,
1055                                priv->active_rxon.node_addr) ||
1056             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1057                                priv->active_rxon.wlap_bssid_addr) ||
1058             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1059             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1060             (priv->staging_rxon.air_propagation !=
1061              priv->active_rxon.air_propagation) ||
1062             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1063              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1064             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1065              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1066             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1067             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1068                 return 1;
1069
1070         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1071          * be updated with the RXON_ASSOC command -- however only some
1072          * flag transitions are allowed using RXON_ASSOC */
1073
1074         /* Check if we are not switching bands */
1075         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1076             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1077                 return 1;
1078
1079         /* Check if we are switching association toggle */
1080         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1081                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1082                 return 1;
1083
1084         return 0;
1085 }
1086
1087 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1088 {
1089         int rc = 0;
1090         struct iwl4965_rx_packet *res = NULL;
1091         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1092         struct iwl4965_host_cmd cmd = {
1093                 .id = REPLY_RXON_ASSOC,
1094                 .len = sizeof(rxon_assoc),
1095                 .meta.flags = CMD_WANT_SKB,
1096                 .data = &rxon_assoc,
1097         };
1098         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1099         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1100
1101         if ((rxon1->flags == rxon2->flags) &&
1102             (rxon1->filter_flags == rxon2->filter_flags) &&
1103             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1104             (rxon1->ofdm_ht_single_stream_basic_rates ==
1105              rxon2->ofdm_ht_single_stream_basic_rates) &&
1106             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1107              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1108             (rxon1->rx_chain == rxon2->rx_chain) &&
1109             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1110                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1111                 return 0;
1112         }
1113
1114         rxon_assoc.flags = priv->staging_rxon.flags;
1115         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1116         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1117         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1118         rxon_assoc.reserved = 0;
1119         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1120             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1121         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1122             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1123         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1124
1125         rc = iwl4965_send_cmd_sync(priv, &cmd);
1126         if (rc)
1127                 return rc;
1128
1129         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1130         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1131                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1132                 rc = -EIO;
1133         }
1134
1135         priv->alloc_rxb_skb--;
1136         dev_kfree_skb_any(cmd.meta.u.skb);
1137
1138         return rc;
1139 }
1140
1141 /**
1142  * iwl4965_commit_rxon - commit staging_rxon to hardware
1143  *
1144  * The RXON command in staging_rxon is committed to the hardware and
1145  * the active_rxon structure is updated with the new data.  This
1146  * function correctly transitions out of the RXON_ASSOC_MSK state if
1147  * a HW tune is required based on the RXON structure changes.
1148  */
1149 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1150 {
1151         /* cast away the const for active_rxon in this function */
1152         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1153         DECLARE_MAC_BUF(mac);
1154         int rc = 0;
1155
1156         if (!iwl4965_is_alive(priv))
1157                 return -1;
1158
1159         /* always get timestamp with Rx frame */
1160         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1161
1162         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1163         if (rc) {
1164                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1165                 return -EINVAL;
1166         }
1167
1168         /* If we don't need to send a full RXON, we can use
1169          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1170          * and other flags for the current radio configuration. */
1171         if (!iwl4965_full_rxon_required(priv)) {
1172                 rc = iwl4965_send_rxon_assoc(priv);
1173                 if (rc) {
1174                         IWL_ERROR("Error setting RXON_ASSOC "
1175                                   "configuration (%d).\n", rc);
1176                         return rc;
1177                 }
1178
1179                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1180
1181                 return 0;
1182         }
1183
1184         /* station table will be cleared */
1185         priv->assoc_station_added = 0;
1186
1187 #ifdef CONFIG_IWL4965_SENSITIVITY
1188         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1189         if (!priv->error_recovering)
1190                 priv->start_calib = 0;
1191
1192         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1193 #endif /* CONFIG_IWL4965_SENSITIVITY */
1194
1195         /* If we are currently associated and the new config requires
1196          * an RXON_ASSOC and the new config wants the associated mask enabled,
1197          * we must clear the associated from the active configuration
1198          * before we apply the new config */
1199         if (iwl4965_is_associated(priv) &&
1200             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1201                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1202                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1203
1204                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1205                                       sizeof(struct iwl4965_rxon_cmd),
1206                                       &priv->active_rxon);
1207
1208                 /* If the mask clearing failed then we set
1209                  * active_rxon back to what it was previously */
1210                 if (rc) {
1211                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1212                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1213                                   "configuration (%d).\n", rc);
1214                         return rc;
1215                 }
1216         }
1217
1218         IWL_DEBUG_INFO("Sending RXON\n"
1219                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1220                        "* channel = %d\n"
1221                        "* bssid = %s\n",
1222                        ((priv->staging_rxon.filter_flags &
1223                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1224                        le16_to_cpu(priv->staging_rxon.channel),
1225                        print_mac(mac, priv->staging_rxon.bssid_addr));
1226
1227         /* Apply the new configuration */
1228         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1229                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1230         if (rc) {
1231                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1232                 return rc;
1233         }
1234
1235         iwl4965_clear_stations_table(priv);
1236
1237 #ifdef CONFIG_IWL4965_SENSITIVITY
1238         if (!priv->error_recovering)
1239                 priv->start_calib = 0;
1240
1241         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1242         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1243 #endif /* CONFIG_IWL4965_SENSITIVITY */
1244
1245         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1246
1247         /* If we issue a new RXON command which required a tune then we must
1248          * send a new TXPOWER command or we won't be able to Tx any frames */
1249         rc = iwl4965_hw_reg_send_txpower(priv);
1250         if (rc) {
1251                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1252                 return rc;
1253         }
1254
1255         /* Add the broadcast address so we can send broadcast frames */
1256         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1257             IWL_INVALID_STATION) {
1258                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1259                 return -EIO;
1260         }
1261
1262         /* If we have set the ASSOC_MSK and we are in BSS mode then
1263          * add the IWL_AP_ID to the station rate table */
1264         if (iwl4965_is_associated(priv) &&
1265             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1266                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1267                     == IWL_INVALID_STATION) {
1268                         IWL_ERROR("Error adding AP address for transmit.\n");
1269                         return -EIO;
1270                 }
1271                 priv->assoc_station_added = 1;
1272         }
1273
1274         return 0;
1275 }
1276
1277 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1278 {
1279         struct iwl4965_bt_cmd bt_cmd = {
1280                 .flags = 3,
1281                 .lead_time = 0xAA,
1282                 .max_kill = 1,
1283                 .kill_ack_mask = 0,
1284                 .kill_cts_mask = 0,
1285         };
1286
1287         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1288                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1289 }
1290
1291 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1292 {
1293         int rc = 0;
1294         struct iwl4965_rx_packet *res;
1295         struct iwl4965_host_cmd cmd = {
1296                 .id = REPLY_SCAN_ABORT_CMD,
1297                 .meta.flags = CMD_WANT_SKB,
1298         };
1299
1300         /* If there isn't a scan actively going on in the hardware
1301          * then we are in between scan bands and not actually
1302          * actively scanning, so don't send the abort command */
1303         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1304                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1305                 return 0;
1306         }
1307
1308         rc = iwl4965_send_cmd_sync(priv, &cmd);
1309         if (rc) {
1310                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1311                 return rc;
1312         }
1313
1314         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1315         if (res->u.status != CAN_ABORT_STATUS) {
1316                 /* The scan abort will return 1 for success or
1317                  * 2 for "failure".  A failure condition can be
1318                  * due to simply not being in an active scan which
1319                  * can occur if we send the scan abort before we
1320                  * the microcode has notified us that a scan is
1321                  * completed. */
1322                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1323                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1324                 clear_bit(STATUS_SCAN_HW, &priv->status);
1325         }
1326
1327         dev_kfree_skb_any(cmd.meta.u.skb);
1328
1329         return rc;
1330 }
1331
1332 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1333                                         struct iwl4965_cmd *cmd,
1334                                         struct sk_buff *skb)
1335 {
1336         return 1;
1337 }
1338
1339 /*
1340  * CARD_STATE_CMD
1341  *
1342  * Use: Sets the device's internal card state to enable, disable, or halt
1343  *
1344  * When in the 'enable' state the card operates as normal.
1345  * When in the 'disable' state, the card enters into a low power mode.
1346  * When in the 'halt' state, the card is shut down and must be fully
1347  * restarted to come back on.
1348  */
1349 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1350 {
1351         struct iwl4965_host_cmd cmd = {
1352                 .id = REPLY_CARD_STATE_CMD,
1353                 .len = sizeof(u32),
1354                 .data = &flags,
1355                 .meta.flags = meta_flag,
1356         };
1357
1358         if (meta_flag & CMD_ASYNC)
1359                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1360
1361         return iwl4965_send_cmd(priv, &cmd);
1362 }
1363
1364 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1365                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1366 {
1367         struct iwl4965_rx_packet *res = NULL;
1368
1369         if (!skb) {
1370                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1371                 return 1;
1372         }
1373
1374         res = (struct iwl4965_rx_packet *)skb->data;
1375         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1376                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1377                           res->hdr.flags);
1378                 return 1;
1379         }
1380
1381         switch (res->u.add_sta.status) {
1382         case ADD_STA_SUCCESS_MSK:
1383                 break;
1384         default:
1385                 break;
1386         }
1387
1388         /* We didn't cache the SKB; let the caller free it */
1389         return 1;
1390 }
1391
1392 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1393                          struct iwl4965_addsta_cmd *sta, u8 flags)
1394 {
1395         struct iwl4965_rx_packet *res = NULL;
1396         int rc = 0;
1397         struct iwl4965_host_cmd cmd = {
1398                 .id = REPLY_ADD_STA,
1399                 .len = sizeof(struct iwl4965_addsta_cmd),
1400                 .meta.flags = flags,
1401                 .data = sta,
1402         };
1403
1404         if (flags & CMD_ASYNC)
1405                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1406         else
1407                 cmd.meta.flags |= CMD_WANT_SKB;
1408
1409         rc = iwl4965_send_cmd(priv, &cmd);
1410
1411         if (rc || (flags & CMD_ASYNC))
1412                 return rc;
1413
1414         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1415         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1416                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1417                           res->hdr.flags);
1418                 rc = -EIO;
1419         }
1420
1421         if (rc == 0) {
1422                 switch (res->u.add_sta.status) {
1423                 case ADD_STA_SUCCESS_MSK:
1424                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1425                         break;
1426                 default:
1427                         rc = -EIO;
1428                         IWL_WARNING("REPLY_ADD_STA failed\n");
1429                         break;
1430                 }
1431         }
1432
1433         priv->alloc_rxb_skb--;
1434         dev_kfree_skb_any(cmd.meta.u.skb);
1435
1436         return rc;
1437 }
1438
1439 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1440                                    struct ieee80211_key_conf *keyconf,
1441                                    u8 sta_id)
1442 {
1443         unsigned long flags;
1444         __le16 key_flags = 0;
1445
1446         switch (keyconf->alg) {
1447         case ALG_CCMP:
1448                 key_flags |= STA_KEY_FLG_CCMP;
1449                 key_flags |= cpu_to_le16(
1450                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1451                 key_flags &= ~STA_KEY_FLG_INVALID;
1452                 break;
1453         case ALG_TKIP:
1454         case ALG_WEP:
1455         default:
1456                 return -EINVAL;
1457         }
1458         spin_lock_irqsave(&priv->sta_lock, flags);
1459         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1460         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1461         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1462                keyconf->keylen);
1463
1464         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1465                keyconf->keylen);
1466         priv->stations[sta_id].sta.key.key_flags = key_flags;
1467         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1468         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1469
1470         spin_unlock_irqrestore(&priv->sta_lock, flags);
1471
1472         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1473         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1474         return 0;
1475 }
1476
1477 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1478 {
1479         unsigned long flags;
1480
1481         spin_lock_irqsave(&priv->sta_lock, flags);
1482         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1483         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1484         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1485         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1486         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1487         spin_unlock_irqrestore(&priv->sta_lock, flags);
1488
1489         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1490         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1491         return 0;
1492 }
1493
1494 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1495 {
1496         struct list_head *element;
1497
1498         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1499                        priv->frames_count);
1500
1501         while (!list_empty(&priv->free_frames)) {
1502                 element = priv->free_frames.next;
1503                 list_del(element);
1504                 kfree(list_entry(element, struct iwl4965_frame, list));
1505                 priv->frames_count--;
1506         }
1507
1508         if (priv->frames_count) {
1509                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1510                             priv->frames_count);
1511                 priv->frames_count = 0;
1512         }
1513 }
1514
1515 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1516 {
1517         struct iwl4965_frame *frame;
1518         struct list_head *element;
1519         if (list_empty(&priv->free_frames)) {
1520                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1521                 if (!frame) {
1522                         IWL_ERROR("Could not allocate frame!\n");
1523                         return NULL;
1524                 }
1525
1526                 priv->frames_count++;
1527                 return frame;
1528         }
1529
1530         element = priv->free_frames.next;
1531         list_del(element);
1532         return list_entry(element, struct iwl4965_frame, list);
1533 }
1534
1535 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1536 {
1537         memset(frame, 0, sizeof(*frame));
1538         list_add(&frame->list, &priv->free_frames);
1539 }
1540
1541 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1542                                 struct ieee80211_hdr *hdr,
1543                                 const u8 *dest, int left)
1544 {
1545
1546         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1547             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1548              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1549                 return 0;
1550
1551         if (priv->ibss_beacon->len > left)
1552                 return 0;
1553
1554         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1555
1556         return priv->ibss_beacon->len;
1557 }
1558
1559 int iwl4965_rate_index_from_plcp(int plcp)
1560 {
1561         int i = 0;
1562
1563         /* 4965 HT rate format */
1564         if (plcp & RATE_MCS_HT_MSK) {
1565                 i = (plcp & 0xff);
1566
1567                 if (i >= IWL_RATE_MIMO_6M_PLCP)
1568                         i = i - IWL_RATE_MIMO_6M_PLCP;
1569
1570                 i += IWL_FIRST_OFDM_RATE;
1571                 /* skip 9M not supported in ht*/
1572                 if (i >= IWL_RATE_9M_INDEX)
1573                         i += 1;
1574                 if ((i >= IWL_FIRST_OFDM_RATE) &&
1575                     (i <= IWL_LAST_OFDM_RATE))
1576                         return i;
1577
1578         /* 4965 legacy rate format, search for match in table */
1579         } else {
1580                 for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1581                         if (iwl4965_rates[i].plcp == (plcp &0xFF))
1582                                 return i;
1583         }
1584         return -1;
1585 }
1586
1587 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1588 {
1589         u8 i;
1590
1591         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1592              i = iwl4965_rates[i].next_ieee) {
1593                 if (rate_mask & (1 << i))
1594                         return iwl4965_rates[i].plcp;
1595         }
1596
1597         return IWL_RATE_INVALID;
1598 }
1599
1600 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1601 {
1602         struct iwl4965_frame *frame;
1603         unsigned int frame_size;
1604         int rc;
1605         u8 rate;
1606
1607         frame = iwl4965_get_free_frame(priv);
1608
1609         if (!frame) {
1610                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1611                           "command.\n");
1612                 return -ENOMEM;
1613         }
1614
1615         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1616                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1617                                                 0xFF0);
1618                 if (rate == IWL_INVALID_RATE)
1619                         rate = IWL_RATE_6M_PLCP;
1620         } else {
1621                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1622                 if (rate == IWL_INVALID_RATE)
1623                         rate = IWL_RATE_1M_PLCP;
1624         }
1625
1626         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1627
1628         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1629                               &frame->u.cmd[0]);
1630
1631         iwl4965_free_frame(priv, frame);
1632
1633         return rc;
1634 }
1635
1636 /******************************************************************************
1637  *
1638  * EEPROM related functions
1639  *
1640  ******************************************************************************/
1641
1642 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1643 {
1644         memcpy(mac, priv->eeprom.mac_address, 6);
1645 }
1646
1647 static inline void iwl4965_eeprom_release_semaphore(struct iwl4965_priv *priv)
1648 {
1649         iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1650                 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
1651 }
1652
1653 /**
1654  * iwl4965_eeprom_init - read EEPROM contents
1655  *
1656  * Load the EEPROM contents from adapter into priv->eeprom
1657  *
1658  * NOTE:  This routine uses the non-debug IO access functions.
1659  */
1660 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1661 {
1662         u16 *e = (u16 *)&priv->eeprom;
1663         u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1664         u32 r;
1665         int sz = sizeof(priv->eeprom);
1666         int rc;
1667         int i;
1668         u16 addr;
1669
1670         /* The EEPROM structure has several padding buffers within it
1671          * and when adding new EEPROM maps is subject to programmer errors
1672          * which may be very difficult to identify without explicitly
1673          * checking the resulting size of the eeprom map. */
1674         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1675
1676         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1677                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1678                 return -ENOENT;
1679         }
1680
1681         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1682         rc = iwl4965_eeprom_acquire_semaphore(priv);
1683         if (rc < 0) {
1684                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1685                 return -ENOENT;
1686         }
1687
1688         /* eeprom is an array of 16bit values */
1689         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1690                 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1691                 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1692
1693                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1694                                         i += IWL_EEPROM_ACCESS_DELAY) {
1695                         r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1696                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1697                                 break;
1698                         udelay(IWL_EEPROM_ACCESS_DELAY);
1699                 }
1700
1701                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1702                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1703                         rc = -ETIMEDOUT;
1704                         goto done;
1705                 }
1706                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1707         }
1708         rc = 0;
1709
1710 done:
1711         iwl4965_eeprom_release_semaphore(priv);
1712         return rc;
1713 }
1714
1715 /******************************************************************************
1716  *
1717  * Misc. internal state and helper functions
1718  *
1719  ******************************************************************************/
1720 #ifdef CONFIG_IWL4965_DEBUG
1721
1722 /**
1723  * iwl4965_report_frame - dump frame to syslog during debug sessions
1724  *
1725  * You may hack this function to show different aspects of received frames,
1726  * including selective frame dumps.
1727  * group100 parameter selects whether to show 1 out of 100 good frames.
1728  *
1729  * TODO:  This was originally written for 3945, need to audit for
1730  *        proper operation with 4965.
1731  */
1732 void iwl4965_report_frame(struct iwl4965_priv *priv,
1733                       struct iwl4965_rx_packet *pkt,
1734                       struct ieee80211_hdr *header, int group100)
1735 {
1736         u32 to_us;
1737         u32 print_summary = 0;
1738         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1739         u32 hundred = 0;
1740         u32 dataframe = 0;
1741         u16 fc;
1742         u16 seq_ctl;
1743         u16 channel;
1744         u16 phy_flags;
1745         int rate_sym;
1746         u16 length;
1747         u16 status;
1748         u16 bcn_tmr;
1749         u32 tsf_low;
1750         u64 tsf;
1751         u8 rssi;
1752         u8 agc;
1753         u16 sig_avg;
1754         u16 noise_diff;
1755         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1756         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1757         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1758         u8 *data = IWL_RX_DATA(pkt);
1759
1760         /* MAC header */
1761         fc = le16_to_cpu(header->frame_control);
1762         seq_ctl = le16_to_cpu(header->seq_ctrl);
1763
1764         /* metadata */
1765         channel = le16_to_cpu(rx_hdr->channel);
1766         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1767         rate_sym = rx_hdr->rate;
1768         length = le16_to_cpu(rx_hdr->len);
1769
1770         /* end-of-frame status and timestamp */
1771         status = le32_to_cpu(rx_end->status);
1772         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1773         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1774         tsf = le64_to_cpu(rx_end->timestamp);
1775
1776         /* signal statistics */
1777         rssi = rx_stats->rssi;
1778         agc = rx_stats->agc;
1779         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1780         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1781
1782         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1783
1784         /* if data frame is to us and all is good,
1785          *   (optionally) print summary for only 1 out of every 100 */
1786         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1787             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1788                 dataframe = 1;
1789                 if (!group100)
1790                         print_summary = 1;      /* print each frame */
1791                 else if (priv->framecnt_to_us < 100) {
1792                         priv->framecnt_to_us++;
1793                         print_summary = 0;
1794                 } else {
1795                         priv->framecnt_to_us = 0;
1796                         print_summary = 1;
1797                         hundred = 1;
1798                 }
1799         } else {
1800                 /* print summary for all other frames */
1801                 print_summary = 1;
1802         }
1803
1804         if (print_summary) {
1805                 char *title;
1806                 u32 rate;
1807
1808                 if (hundred)
1809                         title = "100Frames";
1810                 else if (fc & IEEE80211_FCTL_RETRY)
1811                         title = "Retry";
1812                 else if (ieee80211_is_assoc_response(fc))
1813                         title = "AscRsp";
1814                 else if (ieee80211_is_reassoc_response(fc))
1815                         title = "RasRsp";
1816                 else if (ieee80211_is_probe_response(fc)) {
1817                         title = "PrbRsp";
1818                         print_dump = 1; /* dump frame contents */
1819                 } else if (ieee80211_is_beacon(fc)) {
1820                         title = "Beacon";
1821                         print_dump = 1; /* dump frame contents */
1822                 } else if (ieee80211_is_atim(fc))
1823                         title = "ATIM";
1824                 else if (ieee80211_is_auth(fc))
1825                         title = "Auth";
1826                 else if (ieee80211_is_deauth(fc))
1827                         title = "DeAuth";
1828                 else if (ieee80211_is_disassoc(fc))
1829                         title = "DisAssoc";
1830                 else
1831                         title = "Frame";
1832
1833                 rate = iwl4965_rate_index_from_plcp(rate_sym);
1834                 if (rate == -1)
1835                         rate = 0;
1836                 else
1837                         rate = iwl4965_rates[rate].ieee / 2;
1838
1839                 /* print frame summary.
1840                  * MAC addresses show just the last byte (for brevity),
1841                  *    but you can hack it to show more, if you'd like to. */
1842                 if (dataframe)
1843                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1844                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1845                                      title, fc, header->addr1[5],
1846                                      length, rssi, channel, rate);
1847                 else {
1848                         /* src/dst addresses assume managed mode */
1849                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1850                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1851                                      "phy=0x%02x, chnl=%d\n",
1852                                      title, fc, header->addr1[5],
1853                                      header->addr3[5], rssi,
1854                                      tsf_low - priv->scan_start_tsf,
1855                                      phy_flags, channel);
1856                 }
1857         }
1858         if (print_dump)
1859                 iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1860 }
1861 #endif
1862
1863 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1864 {
1865         if (priv->hw_setting.shared_virt)
1866                 pci_free_consistent(priv->pci_dev,
1867                                     sizeof(struct iwl4965_shared),
1868                                     priv->hw_setting.shared_virt,
1869                                     priv->hw_setting.shared_phys);
1870 }
1871
1872 /**
1873  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1874  *
1875  * return : set the bit for each supported rate insert in ie
1876  */
1877 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1878                                     u16 basic_rate, int *left)
1879 {
1880         u16 ret_rates = 0, bit;
1881         int i;
1882         u8 *cnt = ie;
1883         u8 *rates = ie + 1;
1884
1885         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1886                 if (bit & supported_rate) {
1887                         ret_rates |= bit;
1888                         rates[*cnt] = iwl4965_rates[i].ieee |
1889                                 ((bit & basic_rate) ? 0x80 : 0x00);
1890                         (*cnt)++;
1891                         (*left)--;
1892                         if ((*left <= 0) ||
1893                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1894                                 break;
1895                 }
1896         }
1897
1898         return ret_rates;
1899 }
1900
1901 #ifdef CONFIG_IWL4965_HT
1902 void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1903                              struct ieee80211_ht_cap *ht_cap,
1904                              u8 use_current_config);
1905 #endif
1906
1907 /**
1908  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1909  */
1910 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1911                               struct ieee80211_mgmt *frame,
1912                               int left, int is_direct)
1913 {
1914         int len = 0;
1915         u8 *pos = NULL;
1916         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1917 #ifdef CONFIG_IWL4965_HT
1918         struct ieee80211_hw_mode *mode;
1919 #endif /* CONFIG_IWL4965_HT */
1920
1921         /* Make sure there is enough space for the probe request,
1922          * two mandatory IEs and the data */
1923         left -= 24;
1924         if (left < 0)
1925                 return 0;
1926         len += 24;
1927
1928         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1929         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1930         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1931         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1932         frame->seq_ctrl = 0;
1933
1934         /* fill in our indirect SSID IE */
1935         /* ...next IE... */
1936
1937         left -= 2;
1938         if (left < 0)
1939                 return 0;
1940         len += 2;
1941         pos = &(frame->u.probe_req.variable[0]);
1942         *pos++ = WLAN_EID_SSID;
1943         *pos++ = 0;
1944
1945         /* fill in our direct SSID IE... */
1946         if (is_direct) {
1947                 /* ...next IE... */
1948                 left -= 2 + priv->essid_len;
1949                 if (left < 0)
1950                         return 0;
1951                 /* ... fill it in... */
1952                 *pos++ = WLAN_EID_SSID;
1953                 *pos++ = priv->essid_len;
1954                 memcpy(pos, priv->essid, priv->essid_len);
1955                 pos += priv->essid_len;
1956                 len += 2 + priv->essid_len;
1957         }
1958
1959         /* fill in supported rate */
1960         /* ...next IE... */
1961         left -= 2;
1962         if (left < 0)
1963                 return 0;
1964
1965         /* ... fill it in... */
1966         *pos++ = WLAN_EID_SUPP_RATES;
1967         *pos = 0;
1968
1969         /* exclude 60M rate */
1970         active_rates = priv->rates_mask;
1971         active_rates &= ~IWL_RATE_60M_MASK;
1972
1973         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1974
1975         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1976         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1977                         active_rate_basic, &left);
1978         active_rates &= ~ret_rates;
1979
1980         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1981                                  active_rate_basic, &left);
1982         active_rates &= ~ret_rates;
1983
1984         len += 2 + *pos;
1985         pos += (*pos) + 1;
1986         if (active_rates == 0)
1987                 goto fill_end;
1988
1989         /* fill in supported extended rate */
1990         /* ...next IE... */
1991         left -= 2;
1992         if (left < 0)
1993                 return 0;
1994         /* ... fill it in... */
1995         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1996         *pos = 0;
1997         iwl4965_supported_rate_to_ie(pos, active_rates,
1998                                  active_rate_basic, &left);
1999         if (*pos > 0)
2000                 len += 2 + *pos;
2001
2002 #ifdef CONFIG_IWL4965_HT
2003         mode = priv->hw->conf.mode;
2004         if (mode->ht_info.ht_supported) {
2005                 pos += (*pos) + 1;
2006                 *pos++ = WLAN_EID_HT_CAPABILITY;
2007                 *pos++ = sizeof(struct ieee80211_ht_cap);
2008                 iwl4965_set_ht_capab(priv->hw,
2009                                 (struct ieee80211_ht_cap *)pos, 0);
2010                 len += 2 + sizeof(struct ieee80211_ht_cap);
2011         }
2012 #endif  /*CONFIG_IWL4965_HT */
2013
2014  fill_end:
2015         return (u16)len;
2016 }
2017
2018 /*
2019  * QoS  support
2020 */
2021 #ifdef CONFIG_IWL4965_QOS
2022 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
2023                                        struct iwl4965_qosparam_cmd *qos)
2024 {
2025
2026         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
2027                                 sizeof(struct iwl4965_qosparam_cmd), qos);
2028 }
2029
2030 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
2031 {
2032         u16 cw_min = 15;
2033         u16 cw_max = 1023;
2034         u8 aifs = 2;
2035         u8 is_legacy = 0;
2036         unsigned long flags;
2037         int i;
2038
2039         spin_lock_irqsave(&priv->lock, flags);
2040         priv->qos_data.qos_active = 0;
2041
2042         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
2043                 if (priv->qos_data.qos_enable)
2044                         priv->qos_data.qos_active = 1;
2045                 if (!(priv->active_rate & 0xfff0)) {
2046                         cw_min = 31;
2047                         is_legacy = 1;
2048                 }
2049         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2050                 if (priv->qos_data.qos_enable)
2051                         priv->qos_data.qos_active = 1;
2052         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
2053                 cw_min = 31;
2054                 is_legacy = 1;
2055         }
2056
2057         if (priv->qos_data.qos_active)
2058                 aifs = 3;
2059
2060         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
2061         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
2062         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
2063         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
2064         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
2065
2066         if (priv->qos_data.qos_active) {
2067                 i = 1;
2068                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
2069                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
2070                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
2071                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2072                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2073
2074                 i = 2;
2075                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2076                         cpu_to_le16((cw_min + 1) / 2 - 1);
2077                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2078                         cpu_to_le16(cw_max);
2079                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2080                 if (is_legacy)
2081                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2082                                 cpu_to_le16(6016);
2083                 else
2084                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2085                                 cpu_to_le16(3008);
2086                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2087
2088                 i = 3;
2089                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2090                         cpu_to_le16((cw_min + 1) / 4 - 1);
2091                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2092                         cpu_to_le16((cw_max + 1) / 2 - 1);
2093                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2094                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2095                 if (is_legacy)
2096                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2097                                 cpu_to_le16(3264);
2098                 else
2099                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2100                                 cpu_to_le16(1504);
2101         } else {
2102                 for (i = 1; i < 4; i++) {
2103                         priv->qos_data.def_qos_parm.ac[i].cw_min =
2104                                 cpu_to_le16(cw_min);
2105                         priv->qos_data.def_qos_parm.ac[i].cw_max =
2106                                 cpu_to_le16(cw_max);
2107                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2108                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2109                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2110                 }
2111         }
2112         IWL_DEBUG_QOS("set QoS to default \n");
2113
2114         spin_unlock_irqrestore(&priv->lock, flags);
2115 }
2116
2117 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2118 {
2119         unsigned long flags;
2120
2121         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2122                 return;
2123
2124         if (!priv->qos_data.qos_enable)
2125                 return;
2126
2127         spin_lock_irqsave(&priv->lock, flags);
2128         priv->qos_data.def_qos_parm.qos_flags = 0;
2129
2130         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2131             !priv->qos_data.qos_cap.q_AP.txop_request)
2132                 priv->qos_data.def_qos_parm.qos_flags |=
2133                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2134         if (priv->qos_data.qos_active)
2135                 priv->qos_data.def_qos_parm.qos_flags |=
2136                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2137
2138 #ifdef CONFIG_IWL4965_HT
2139         if (priv->current_ht_config.is_ht)
2140                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2141 #endif /* CONFIG_IWL4965_HT */
2142
2143         spin_unlock_irqrestore(&priv->lock, flags);
2144
2145         if (force || iwl4965_is_associated(priv)) {
2146                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2147                                 priv->qos_data.qos_active,
2148                                 priv->qos_data.def_qos_parm.qos_flags);
2149
2150                 iwl4965_send_qos_params_command(priv,
2151                                 &(priv->qos_data.def_qos_parm));
2152         }
2153 }
2154
2155 #endif /* CONFIG_IWL4965_QOS */
2156 /*
2157  * Power management (not Tx power!) functions
2158  */
2159 #define MSEC_TO_USEC 1024
2160
2161 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2162 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2163 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2164 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2165                                      __constant_cpu_to_le32(X1), \
2166                                      __constant_cpu_to_le32(X2), \
2167                                      __constant_cpu_to_le32(X3), \
2168                                      __constant_cpu_to_le32(X4)}
2169
2170
2171 /* default power management (not Tx power) table values */
2172 /* for tim  0-10 */
2173 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2174         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2175         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2176         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2177         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2178         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2179         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2180 };
2181
2182 /* for tim > 10 */
2183 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2184         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2185         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2186                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2187         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2188                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2189         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2190                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2191         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2192         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2193                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2194 };
2195
2196 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2197 {
2198         int rc = 0, i;
2199         struct iwl4965_power_mgr *pow_data;
2200         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2201         u16 pci_pm;
2202
2203         IWL_DEBUG_POWER("Initialize power \n");
2204
2205         pow_data = &(priv->power_data);
2206
2207         memset(pow_data, 0, sizeof(*pow_data));
2208
2209         pow_data->active_index = IWL_POWER_RANGE_0;
2210         pow_data->dtim_val = 0xffff;
2211
2212         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2213         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2214
2215         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2216         if (rc != 0)
2217                 return 0;
2218         else {
2219                 struct iwl4965_powertable_cmd *cmd;
2220
2221                 IWL_DEBUG_POWER("adjust power command flags\n");
2222
2223                 for (i = 0; i < IWL_POWER_AC; i++) {
2224                         cmd = &pow_data->pwr_range_0[i].cmd;
2225
2226                         if (pci_pm & 0x1)
2227                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2228                         else
2229                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2230                 }
2231         }
2232         return rc;
2233 }
2234
2235 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2236                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
2237 {
2238         int rc = 0, i;
2239         u8 skip;
2240         u32 max_sleep = 0;
2241         struct iwl4965_power_vec_entry *range;
2242         u8 period = 0;
2243         struct iwl4965_power_mgr *pow_data;
2244
2245         if (mode > IWL_POWER_INDEX_5) {
2246                 IWL_DEBUG_POWER("Error invalid power mode \n");
2247                 return -1;
2248         }
2249         pow_data = &(priv->power_data);
2250
2251         if (pow_data->active_index == IWL_POWER_RANGE_0)
2252                 range = &pow_data->pwr_range_0[0];
2253         else
2254                 range = &pow_data->pwr_range_1[1];
2255
2256         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2257
2258 #ifdef IWL_MAC80211_DISABLE
2259         if (priv->assoc_network != NULL) {
2260                 unsigned long flags;
2261
2262                 period = priv->assoc_network->tim.tim_period;
2263         }
2264 #endif  /*IWL_MAC80211_DISABLE */
2265         skip = range[mode].no_dtim;
2266
2267         if (period == 0) {
2268                 period = 1;
2269                 skip = 0;
2270         }
2271
2272         if (skip == 0) {
2273                 max_sleep = period;
2274                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2275         } else {
2276                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2277                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2278                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2279         }
2280
2281         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2282                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2283                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2284         }
2285
2286         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2287         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2288         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2289         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2290                         le32_to_cpu(cmd->sleep_interval[0]),
2291                         le32_to_cpu(cmd->sleep_interval[1]),
2292                         le32_to_cpu(cmd->sleep_interval[2]),
2293                         le32_to_cpu(cmd->sleep_interval[3]),
2294                         le32_to_cpu(cmd->sleep_interval[4]));
2295
2296         return rc;
2297 }
2298
2299 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2300 {
2301         u32 uninitialized_var(final_mode);
2302         int rc;
2303         struct iwl4965_powertable_cmd cmd;
2304
2305         /* If on battery, set to 3,
2306          * if plugged into AC power, set to CAM ("continuously aware mode"),
2307          * else user level */
2308         switch (mode) {
2309         case IWL_POWER_BATTERY:
2310                 final_mode = IWL_POWER_INDEX_3;
2311                 break;
2312         case IWL_POWER_AC:
2313                 final_mode = IWL_POWER_MODE_CAM;
2314                 break;
2315         default:
2316                 final_mode = mode;
2317                 break;
2318         }
2319
2320         cmd.keep_alive_beacons = 0;
2321
2322         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2323
2324         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2325
2326         if (final_mode == IWL_POWER_MODE_CAM)
2327                 clear_bit(STATUS_POWER_PMI, &priv->status);
2328         else
2329                 set_bit(STATUS_POWER_PMI, &priv->status);
2330
2331         return rc;
2332 }
2333
2334 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2335 {
2336         /* Filter incoming packets to determine if they are targeted toward
2337          * this network, discarding packets coming from ourselves */
2338         switch (priv->iw_mode) {
2339         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2340                 /* packets from our adapter are dropped (echo) */
2341                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2342                         return 0;
2343                 /* {broad,multi}cast packets to our IBSS go through */
2344                 if (is_multicast_ether_addr(header->addr1))
2345                         return !compare_ether_addr(header->addr3, priv->bssid);
2346                 /* packets to our adapter go through */
2347                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2348         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2349                 /* packets from our adapter are dropped (echo) */
2350                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2351                         return 0;
2352                 /* {broad,multi}cast packets to our BSS go through */
2353                 if (is_multicast_ether_addr(header->addr1))
2354                         return !compare_ether_addr(header->addr2, priv->bssid);
2355                 /* packets to our adapter go through */
2356                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2357         }
2358
2359         return 1;
2360 }
2361
2362 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2363
2364 static const char *iwl4965_get_tx_fail_reason(u32 status)
2365 {
2366         switch (status & TX_STATUS_MSK) {
2367         case TX_STATUS_SUCCESS:
2368                 return "SUCCESS";
2369                 TX_STATUS_ENTRY(SHORT_LIMIT);
2370                 TX_STATUS_ENTRY(LONG_LIMIT);
2371                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2372                 TX_STATUS_ENTRY(MGMNT_ABORT);
2373                 TX_STATUS_ENTRY(NEXT_FRAG);
2374                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2375                 TX_STATUS_ENTRY(DEST_PS);
2376                 TX_STATUS_ENTRY(ABORTED);
2377                 TX_STATUS_ENTRY(BT_RETRY);
2378                 TX_STATUS_ENTRY(STA_INVALID);
2379                 TX_STATUS_ENTRY(FRAG_DROPPED);
2380                 TX_STATUS_ENTRY(TID_DISABLE);
2381                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2382                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2383                 TX_STATUS_ENTRY(TX_LOCKED);
2384                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2385         }
2386
2387         return "UNKNOWN";
2388 }
2389
2390 /**
2391  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2392  *
2393  * NOTE: priv->mutex is not required before calling this function
2394  */
2395 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2396 {
2397         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2398                 clear_bit(STATUS_SCANNING, &priv->status);
2399                 return 0;
2400         }
2401
2402         if (test_bit(STATUS_SCANNING, &priv->status)) {
2403                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2404                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2405                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2406                         queue_work(priv->workqueue, &priv->abort_scan);
2407
2408                 } else
2409                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2410
2411                 return test_bit(STATUS_SCANNING, &priv->status);
2412         }
2413
2414         return 0;
2415 }
2416
2417 /**
2418  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2419  * @ms: amount of time to wait (in milliseconds) for scan to abort
2420  *
2421  * NOTE: priv->mutex must be held before calling this function
2422  */
2423 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2424 {
2425         unsigned long now = jiffies;
2426         int ret;
2427
2428         ret = iwl4965_scan_cancel(priv);
2429         if (ret && ms) {
2430                 mutex_unlock(&priv->mutex);
2431                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2432                                 test_bit(STATUS_SCANNING, &priv->status))
2433                         msleep(1);
2434                 mutex_lock(&priv->mutex);
2435
2436                 return test_bit(STATUS_SCANNING, &priv->status);
2437         }
2438
2439         return ret;
2440 }
2441
2442 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2443 {
2444         /* Reset ieee stats */
2445
2446         /* We don't reset the net_device_stats (ieee->stats) on
2447          * re-association */
2448
2449         priv->last_seq_num = -1;
2450         priv->last_frag_num = -1;
2451         priv->last_packet_time = 0;
2452
2453         iwl4965_scan_cancel(priv);
2454 }
2455
2456 #define MAX_UCODE_BEACON_INTERVAL       4096
2457 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2458
2459 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2460 {
2461         u16 new_val = 0;
2462         u16 beacon_factor = 0;
2463
2464         beacon_factor =
2465             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2466                 / MAX_UCODE_BEACON_INTERVAL;
2467         new_val = beacon_val / beacon_factor;
2468
2469         return cpu_to_le16(new_val);
2470 }
2471
2472 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2473 {
2474         u64 interval_tm_unit;
2475         u64 tsf, result;
2476         unsigned long flags;
2477         struct ieee80211_conf *conf = NULL;
2478         u16 beacon_int = 0;
2479
2480         conf = ieee80211_get_hw_conf(priv->hw);
2481
2482         spin_lock_irqsave(&priv->lock, flags);
2483         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2484         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2485
2486         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2487
2488         tsf = priv->timestamp1;
2489         tsf = ((tsf << 32) | priv->timestamp0);
2490
2491         beacon_int = priv->beacon_int;
2492         spin_unlock_irqrestore(&priv->lock, flags);
2493
2494         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2495                 if (beacon_int == 0) {
2496                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2497                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2498                 } else {
2499                         priv->rxon_timing.beacon_interval =
2500                                 cpu_to_le16(beacon_int);
2501                         priv->rxon_timing.beacon_interval =
2502                             iwl4965_adjust_beacon_interval(
2503                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2504                 }
2505
2506                 priv->rxon_timing.atim_window = 0;
2507         } else {
2508                 priv->rxon_timing.beacon_interval =
2509                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2510                 /* TODO: we need to get atim_window from upper stack
2511                  * for now we set to 0 */
2512                 priv->rxon_timing.atim_window = 0;
2513         }
2514
2515         interval_tm_unit =
2516                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2517         result = do_div(tsf, interval_tm_unit);
2518         priv->rxon_timing.beacon_init_val =
2519             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2520
2521         IWL_DEBUG_ASSOC
2522             ("beacon interval %d beacon timer %d beacon tim %d\n",
2523                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2524                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2525                 le16_to_cpu(priv->rxon_timing.atim_window));
2526 }
2527
2528 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2529 {
2530         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2531                 IWL_ERROR("APs don't scan.\n");
2532                 return 0;
2533         }
2534
2535         if (!iwl4965_is_ready_rf(priv)) {
2536                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2537                 return -EIO;
2538         }
2539
2540         if (test_bit(STATUS_SCANNING, &priv->status)) {
2541                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2542                 return -EAGAIN;
2543         }
2544
2545         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2546                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2547                                "Queuing.\n");
2548                 return -EAGAIN;
2549         }
2550
2551         IWL_DEBUG_INFO("Starting scan...\n");
2552         priv->scan_bands = 2;
2553         set_bit(STATUS_SCANNING, &priv->status);
2554         priv->scan_start = jiffies;
2555         priv->scan_pass_start = priv->scan_start;
2556
2557         queue_work(priv->workqueue, &priv->request_scan);
2558
2559         return 0;
2560 }
2561
2562 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2563 {
2564         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2565
2566         if (hw_decrypt)
2567                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2568         else
2569                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2570
2571         return 0;
2572 }
2573
2574 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2575 {
2576         if (phymode == MODE_IEEE80211A) {
2577                 priv->staging_rxon.flags &=
2578                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2579                       | RXON_FLG_CCK_MSK);
2580                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2581         } else {
2582                 /* Copied from iwl4965_bg_post_associate() */
2583                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2584                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2585                 else
2586                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2587
2588                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2589                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2590
2591                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2592                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2593                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2594         }
2595 }
2596
2597 /*
2598  * initialize rxon structure with default values from eeprom
2599  */
2600 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2601 {
2602         const struct iwl4965_channel_info *ch_info;
2603
2604         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2605
2606         switch (priv->iw_mode) {
2607         case IEEE80211_IF_TYPE_AP:
2608                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2609                 break;
2610
2611         case IEEE80211_IF_TYPE_STA:
2612                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2613                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2614                 break;
2615
2616         case IEEE80211_IF_TYPE_IBSS:
2617                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2618                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2619                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2620                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2621                 break;
2622
2623         case IEEE80211_IF_TYPE_MNTR:
2624                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2625                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2626                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2627                 break;
2628         }
2629
2630 #if 0
2631         /* TODO:  Figure out when short_preamble would be set and cache from
2632          * that */
2633         if (!hw_to_local(priv->hw)->short_preamble)
2634                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2635         else
2636                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2637 #endif
2638
2639         ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2640                                        le16_to_cpu(priv->staging_rxon.channel));
2641
2642         if (!ch_info)
2643                 ch_info = &priv->channel_info[0];
2644
2645         /*
2646          * in some case A channels are all non IBSS
2647          * in this case force B/G channel
2648          */
2649         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2650             !(is_channel_ibss(ch_info)))
2651                 ch_info = &priv->channel_info[0];
2652
2653         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2654         if (is_channel_a_band(ch_info))
2655                 priv->phymode = MODE_IEEE80211A;
2656         else
2657                 priv->phymode = MODE_IEEE80211G;
2658
2659         iwl4965_set_flags_for_phymode(priv, priv->phymode);
2660
2661         priv->staging_rxon.ofdm_basic_rates =
2662             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2663         priv->staging_rxon.cck_basic_rates =
2664             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2665
2666         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2667                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2668         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2669         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2670         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2671         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2672         iwl4965_set_rxon_chain(priv);
2673 }
2674
2675 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2676 {
2677         if (mode == IEEE80211_IF_TYPE_IBSS) {
2678                 const struct iwl4965_channel_info *ch_info;
2679
2680                 ch_info = iwl4965_get_channel_info(priv,
2681                         priv->phymode,
2682                         le16_to_cpu(priv->staging_rxon.channel));
2683
2684                 if (!ch_info || !is_channel_ibss(ch_info)) {
2685                         IWL_ERROR("channel %d not IBSS channel\n",
2686                                   le16_to_cpu(priv->staging_rxon.channel));
2687                         return -EINVAL;
2688                 }
2689         }
2690
2691         priv->iw_mode = mode;
2692
2693         iwl4965_connection_init_rx_config(priv);
2694         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2695
2696         iwl4965_clear_stations_table(priv);
2697
2698         /* dont commit rxon if rf-kill is on*/
2699         if (!iwl4965_is_ready_rf(priv))
2700                 return -EAGAIN;
2701
2702         cancel_delayed_work(&priv->scan_check);
2703         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2704                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2705                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2706                 return -EAGAIN;
2707         }
2708
2709         iwl4965_commit_rxon(priv);
2710
2711         return 0;
2712 }
2713
2714 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2715                                       struct ieee80211_tx_control *ctl,
2716                                       struct iwl4965_cmd *cmd,
2717                                       struct sk_buff *skb_frag,
2718                                       int last_frag)
2719 {
2720         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2721
2722         switch (keyinfo->alg) {
2723         case ALG_CCMP:
2724                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2725                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2726                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2727                 break;
2728
2729         case ALG_TKIP:
2730 #if 0
2731                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2732
2733                 if (last_frag)
2734                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2735                                8);
2736                 else
2737                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2738 #endif
2739                 break;
2740
2741         case ALG_WEP:
2742                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2743                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2744
2745                 if (keyinfo->keylen == 13)
2746                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2747
2748                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2749
2750                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2751                              "with key %d\n", ctl->key_idx);
2752                 break;
2753
2754         default:
2755                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2756                 break;
2757         }
2758 }
2759
2760 /*
2761  * handle build REPLY_TX command notification.
2762  */
2763 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2764                                   struct iwl4965_cmd *cmd,
2765                                   struct ieee80211_tx_control *ctrl,
2766                                   struct ieee80211_hdr *hdr,
2767                                   int is_unicast, u8 std_id)
2768 {
2769         __le16 *qc;
2770         u16 fc = le16_to_cpu(hdr->frame_control);
2771         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2772
2773         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2774         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2775                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2776                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2777                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2778                 if (ieee80211_is_probe_response(fc) &&
2779                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2780                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2781         } else {
2782                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2783                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2784         }
2785
2786         if (ieee80211_is_back_request(fc))
2787                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2788
2789
2790         cmd->cmd.tx.sta_id = std_id;
2791         if (ieee80211_get_morefrag(hdr))
2792                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2793
2794         qc = ieee80211_get_qos_ctrl(hdr);
2795         if (qc) {
2796                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2797                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2798         } else
2799                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2800
2801         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2802                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2803                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2804         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2805                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2806                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2807         }
2808
2809         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2810                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2811
2812         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2813         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2814                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2815                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2816                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2817                 else
2818                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2819         } else
2820                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2821
2822         cmd->cmd.tx.driver_txop = 0;
2823         cmd->cmd.tx.tx_flags = tx_flags;
2824         cmd->cmd.tx.next_frame_len = 0;
2825 }
2826
2827 /**
2828  * iwl4965_get_sta_id - Find station's index within station table
2829  *
2830  * If new IBSS station, create new entry in station table
2831  */
2832 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2833                                 struct ieee80211_hdr *hdr)
2834 {
2835         int sta_id;
2836         u16 fc = le16_to_cpu(hdr->frame_control);
2837         DECLARE_MAC_BUF(mac);
2838
2839         /* If this frame is broadcast or management, use broadcast station id */
2840         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2841             is_multicast_ether_addr(hdr->addr1))
2842                 return priv->hw_setting.bcast_sta_id;
2843
2844         switch (priv->iw_mode) {
2845
2846         /* If we are a client station in a BSS network, use the special
2847          * AP station entry (that's the only station we communicate with) */
2848         case IEEE80211_IF_TYPE_STA:
2849                 return IWL_AP_ID;
2850
2851         /* If we are an AP, then find the station, or use BCAST */
2852         case IEEE80211_IF_TYPE_AP:
2853                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2854                 if (sta_id != IWL_INVALID_STATION)
2855                         return sta_id;
2856                 return priv->hw_setting.bcast_sta_id;
2857
2858         /* If this frame is going out to an IBSS network, find the station,
2859          * or create a new station table entry */
2860         case IEEE80211_IF_TYPE_IBSS:
2861                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2862                 if (sta_id != IWL_INVALID_STATION)
2863                         return sta_id;
2864
2865                 /* Create new station table entry */
2866                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2867                                                    0, CMD_ASYNC, NULL);
2868
2869                 if (sta_id != IWL_INVALID_STATION)
2870                         return sta_id;
2871
2872                 IWL_DEBUG_DROP("Station %s not in station map. "
2873                                "Defaulting to broadcast...\n",
2874                                print_mac(mac, hdr->addr1));
2875                 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2876                 return priv->hw_setting.bcast_sta_id;
2877
2878         default:
2879                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2880                 return priv->hw_setting.bcast_sta_id;
2881         }
2882 }
2883
2884 /*
2885  * start REPLY_TX command process
2886  */
2887 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2888                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2889 {
2890         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2891         struct iwl4965_tfd_frame *tfd;
2892         u32 *control_flags;
2893         int txq_id = ctl->queue;
2894         struct iwl4965_tx_queue *txq = NULL;
2895         struct iwl4965_queue *q = NULL;
2896         dma_addr_t phys_addr;
2897         dma_addr_t txcmd_phys;
2898         dma_addr_t scratch_phys;
2899         struct iwl4965_cmd *out_cmd = NULL;
2900         u16 len, idx, len_org;
2901         u8 id, hdr_len, unicast;
2902         u8 sta_id;
2903         u16 seq_number = 0;
2904         u16 fc;
2905         __le16 *qc;
2906         u8 wait_write_ptr = 0;
2907         unsigned long flags;
2908         int rc;
2909
2910         spin_lock_irqsave(&priv->lock, flags);
2911         if (iwl4965_is_rfkill(priv)) {
2912                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2913                 goto drop_unlock;
2914         }
2915
2916         if (!priv->vif) {
2917                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2918                 goto drop_unlock;
2919         }
2920
2921         if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2922                 IWL_ERROR("ERROR: No TX rate available.\n");
2923                 goto drop_unlock;
2924         }
2925
2926         unicast = !is_multicast_ether_addr(hdr->addr1);
2927         id = 0;
2928
2929         fc = le16_to_cpu(hdr->frame_control);
2930
2931 #ifdef CONFIG_IWL4965_DEBUG
2932         if (ieee80211_is_auth(fc))
2933                 IWL_DEBUG_TX("Sending AUTH frame\n");
2934         else if (ieee80211_is_assoc_request(fc))
2935                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2936         else if (ieee80211_is_reassoc_request(fc))
2937                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2938 #endif
2939
2940         /* drop all data frame if we are not associated */
2941         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2942            (!iwl4965_is_associated(priv) ||
2943             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2944             !priv->assoc_station_added)) {
2945                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2946                 goto drop_unlock;
2947         }
2948
2949         spin_unlock_irqrestore(&priv->lock, flags);
2950
2951         hdr_len = ieee80211_get_hdrlen(fc);
2952
2953         /* Find (or create) index into station table for destination station */
2954         sta_id = iwl4965_get_sta_id(priv, hdr);
2955         if (sta_id == IWL_INVALID_STATION) {
2956                 DECLARE_MAC_BUF(mac);
2957
2958                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2959                                print_mac(mac, hdr->addr1));
2960                 goto drop;
2961         }
2962
2963         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2964
2965         qc = ieee80211_get_qos_ctrl(hdr);
2966         if (qc) {
2967                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2968                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2969                                 IEEE80211_SCTL_SEQ;
2970                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2971                         (hdr->seq_ctrl &
2972                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2973                 seq_number += 0x10;
2974 #ifdef CONFIG_IWL4965_HT
2975                 /* aggregation is on for this <sta,tid> */
2976                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2977                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2978                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2979 #endif /* CONFIG_IWL4965_HT */
2980         }
2981
2982         /* Descriptor for chosen Tx queue */
2983         txq = &priv->txq[txq_id];
2984         q = &txq->q;
2985
2986         spin_lock_irqsave(&priv->lock, flags);
2987
2988         /* Set up first empty TFD within this queue's circular TFD buffer */
2989         tfd = &txq->bd[q->write_ptr];
2990         memset(tfd, 0, sizeof(*tfd));
2991         control_flags = (u32 *) tfd;
2992         idx = get_cmd_index(q, q->write_ptr, 0);
2993
2994         /* Set up driver data for this TFD */
2995         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2996         txq->txb[q->write_ptr].skb[0] = skb;
2997         memcpy(&(txq->txb[q->write_ptr].status.control),
2998                ctl, sizeof(struct ieee80211_tx_control));
2999
3000         /* Set up first empty entry in queue's array of Tx/cmd buffers */
3001         out_cmd = &txq->cmd[idx];
3002         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
3003         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
3004
3005         /*
3006          * Set up the Tx-command (not MAC!) header.
3007          * Store the chosen Tx queue and TFD index within the sequence field;
3008          * after Tx, uCode's Tx response will return this value so driver can
3009          * locate the frame within the tx queue and do post-tx processing.
3010          */
3011         out_cmd->hdr.cmd = REPLY_TX;
3012         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
3013                                 INDEX_TO_SEQ(q->write_ptr)));
3014
3015         /* Copy MAC header from skb into command buffer */
3016         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
3017
3018         /*
3019          * Use the first empty entry in this queue's command buffer array
3020          * to contain the Tx command and MAC header concatenated together
3021          * (payload data will be in another buffer).
3022          * Size of this varies, due to varying MAC header length.
3023          * If end is not dword aligned, we'll have 2 extra bytes at the end
3024          * of the MAC header (device reads on dword boundaries).
3025          * We'll tell device about this padding later.
3026          */
3027         len = priv->hw_setting.tx_cmd_len +
3028                 sizeof(struct iwl4965_cmd_header) + hdr_len;
3029
3030         len_org = len;
3031         len = (len + 3) & ~3;
3032
3033         if (len_org != len)
3034                 len_org = 1;
3035         else
3036                 len_org = 0;
3037
3038         /* Physical address of this Tx command's header (not MAC header!),
3039          * within command buffer array. */
3040         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3041                      offsetof(struct iwl4965_cmd, hdr);
3042
3043         /* Add buffer containing Tx command and MAC(!) header to TFD's
3044          * first entry */
3045         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3046
3047         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
3048                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3049
3050         /* Set up TFD's 2nd entry to point directly to remainder of skb,
3051          * if any (802.11 null frames have no payload). */
3052         len = skb->len - hdr_len;
3053         if (len) {
3054                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3055                                            len, PCI_DMA_TODEVICE);
3056                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3057         }
3058
3059         /* Tell 4965 about any 2-byte padding after MAC header */
3060         if (len_org)
3061                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3062
3063         /* Total # bytes to be transmitted */
3064         len = (u16)skb->len;
3065         out_cmd->cmd.tx.len = cpu_to_le16(len);
3066
3067         /* TODO need this for burst mode later on */
3068         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3069
3070         /* set is_hcca to 0; it probably will never be implemented */
3071         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3072
3073         scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
3074                 offsetof(struct iwl4965_tx_cmd, scratch);
3075         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
3076         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
3077
3078 #ifdef CONFIG_IWL4965_HT_AGG
3079 #ifdef CONFIG_IWL4965_HT
3080         /* TODO: move this functionality to rate scaling */
3081         iwl4965_tl_get_stats(priv, hdr);
3082 #endif /* CONFIG_IWL4965_HT_AGG */
3083 #endif /*CONFIG_IWL4965_HT */
3084
3085
3086         if (!ieee80211_get_morefrag(hdr)) {
3087                 txq->need_update = 1;
3088                 if (qc) {
3089                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3090                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
3091                 }
3092         } else {
3093                 wait_write_ptr = 1;
3094                 txq->need_update = 0;
3095         }
3096
3097         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3098                            sizeof(out_cmd->cmd.tx));
3099
3100         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3101                            ieee80211_get_hdrlen(fc));
3102
3103         /* Set up entry for this TFD in Tx byte-count array */
3104         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3105
3106         /* Tell device the write index *just past* this latest filled TFD */
3107         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3108         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3109         spin_unlock_irqrestore(&priv->lock, flags);
3110
3111         if (rc)
3112                 return rc;
3113
3114         if ((iwl4965_queue_space(q) < q->high_mark)
3115             && priv->mac80211_registered) {
3116                 if (wait_write_ptr) {
3117                         spin_lock_irqsave(&priv->lock, flags);
3118                         txq->need_update = 1;
3119                         iwl4965_tx_queue_update_write_ptr(priv, txq);
3120                         spin_unlock_irqrestore(&priv->lock, flags);
3121                 }
3122
3123                 ieee80211_stop_queue(priv->hw, ctl->queue);
3124         }
3125
3126         return 0;
3127
3128 drop_unlock:
3129         spin_unlock_irqrestore(&priv->lock, flags);
3130 drop:
3131         return -1;
3132 }
3133
3134 static void iwl4965_set_rate(struct iwl4965_priv *priv)
3135 {
3136         const struct ieee80211_hw_mode *hw = NULL;
3137         struct ieee80211_rate *rate;
3138         int i;
3139
3140         hw = iwl4965_get_hw_mode(priv, priv->phymode);
3141         if (!hw) {
3142                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3143                 return;
3144         }
3145
3146         priv->active_rate = 0;
3147         priv->active_rate_basic = 0;
3148
3149         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3150                        hw->mode == MODE_IEEE80211A ?
3151                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3152
3153         for (i = 0; i < hw->num_rates; i++) {
3154                 rate = &(hw->rates[i]);
3155                 if ((rate->val < IWL_RATE_COUNT) &&
3156                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3157                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3158                                        rate->val, iwl4965_rates[rate->val].plcp,
3159                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3160                                        "*" : "");
3161                         priv->active_rate |= (1 << rate->val);
3162                         if (rate->flags & IEEE80211_RATE_BASIC)
3163                                 priv->active_rate_basic |= (1 << rate->val);
3164                 } else
3165                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3166                                        rate->val, iwl4965_rates[rate->val].plcp);
3167         }
3168
3169         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3170                        priv->active_rate, priv->active_rate_basic);
3171
3172         /*
3173          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3174          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3175          * OFDM
3176          */
3177         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3178                 priv->staging_rxon.cck_basic_rates =
3179                     ((priv->active_rate_basic &
3180                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3181         else
3182                 priv->staging_rxon.cck_basic_rates =
3183                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3184
3185         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3186                 priv->staging_rxon.ofdm_basic_rates =
3187                     ((priv->active_rate_basic &
3188                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3189                       IWL_FIRST_OFDM_RATE) & 0xFF;
3190         else
3191                 priv->staging_rxon.ofdm_basic_rates =
3192                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3193 }
3194
3195 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3196 {
3197         unsigned long flags;
3198
3199         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3200                 return;
3201
3202         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3203                           disable_radio ? "OFF" : "ON");
3204
3205         if (disable_radio) {
3206                 iwl4965_scan_cancel(priv);
3207                 /* FIXME: This is a workaround for AP */
3208                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3209                         spin_lock_irqsave(&priv->lock, flags);
3210                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3211                                     CSR_UCODE_SW_BIT_RFKILL);
3212                         spin_unlock_irqrestore(&priv->lock, flags);
3213                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3214                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3215                 }
3216                 return;
3217         }
3218
3219         spin_lock_irqsave(&priv->lock, flags);
3220         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3221
3222         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3223         spin_unlock_irqrestore(&priv->lock, flags);
3224
3225         /* wake up ucode */
3226         msleep(10);
3227
3228         spin_lock_irqsave(&priv->lock, flags);
3229         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3230         if (!iwl4965_grab_nic_access(priv))
3231                 iwl4965_release_nic_access(priv);
3232         spin_unlock_irqrestore(&priv->lock, flags);
3233
3234         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3235                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3236                                   "disabled by HW switch\n");
3237                 return;
3238         }
3239
3240         queue_work(priv->workqueue, &priv->restart);
3241         return;
3242 }
3243
3244 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3245                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3246 {
3247         u16 fc =
3248             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3249
3250         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3251                 return;
3252
3253         if (!(fc & IEEE80211_FCTL_PROTECTED))
3254                 return;
3255
3256         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3257         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3258         case RX_RES_STATUS_SEC_TYPE_TKIP:
3259                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3260                     RX_RES_STATUS_BAD_ICV_MIC)
3261                         stats->flag |= RX_FLAG_MMIC_ERROR;
3262         case RX_RES_STATUS_SEC_TYPE_WEP:
3263         case RX_RES_STATUS_SEC_TYPE_CCMP:
3264                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3265                     RX_RES_STATUS_DECRYPT_OK) {
3266                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3267                         stats->flag |= RX_FLAG_DECRYPTED;
3268                 }
3269                 break;
3270
3271         default:
3272                 break;
3273         }
3274 }
3275
3276
3277 #define IWL_PACKET_RETRY_TIME HZ
3278
3279 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3280 {
3281         u16 sc = le16_to_cpu(header->seq_ctrl);
3282         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3283         u16 frag = sc & IEEE80211_SCTL_FRAG;
3284         u16 *last_seq, *last_frag;
3285         unsigned long *last_time;
3286
3287         switch (priv->iw_mode) {
3288         case IEEE80211_IF_TYPE_IBSS:{
3289                 struct list_head *p;
3290                 struct iwl4965_ibss_seq *entry = NULL;
3291                 u8 *mac = header->addr2;
3292                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3293
3294                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3295                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
3296                         if (!compare_ether_addr(entry->mac, mac))
3297                                 break;
3298                 }
3299                 if (p == &priv->ibss_mac_hash[index]) {
3300                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3301                         if (!entry) {
3302                                 IWL_ERROR("Cannot malloc new mac entry\n");
3303                                 return 0;
3304                         }
3305                         memcpy(entry->mac, mac, ETH_ALEN);
3306                         entry->seq_num = seq;
3307                         entry->frag_num = frag;
3308                         entry->packet_time = jiffies;
3309                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3310                         return 0;
3311                 }
3312                 last_seq = &entry->seq_num;
3313                 last_frag = &entry->frag_num;
3314                 last_time = &entry->packet_time;
3315                 break;
3316         }
3317         case IEEE80211_IF_TYPE_STA:
3318                 last_seq = &priv->last_seq_num;
3319                 last_frag = &priv->last_frag_num;
3320                 last_time = &priv->last_packet_time;
3321                 break;
3322         default:
3323                 return 0;
3324         }
3325         if ((*last_seq == seq) &&
3326             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3327                 if (*last_frag == frag)
3328                         goto drop;
3329                 if (*last_frag + 1 != frag)
3330                         /* out-of-order fragment */
3331                         goto drop;
3332         } else
3333                 *last_seq = seq;
3334
3335         *last_frag = frag;
3336         *last_time = jiffies;
3337         return 0;
3338
3339  drop:
3340         return 1;
3341 }
3342
3343 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3344
3345 #include "iwl-spectrum.h"
3346
3347 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3348 #define BEACON_TIME_MASK_HIGH   0xFF000000
3349 #define TIME_UNIT               1024
3350
3351 /*
3352  * extended beacon time format
3353  * time in usec will be changed into a 32-bit value in 8:24 format
3354  * the high 1 byte is the beacon counts
3355  * the lower 3 bytes is the time in usec within one beacon interval
3356  */
3357
3358 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3359 {
3360         u32 quot;
3361         u32 rem;
3362         u32 interval = beacon_interval * 1024;
3363
3364         if (!interval || !usec)
3365                 return 0;
3366
3367         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3368         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3369
3370         return (quot << 24) + rem;
3371 }
3372
3373 /* base is usually what we get from ucode with each received frame,
3374  * the same as HW timer counter counting down
3375  */
3376
3377 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3378 {
3379         u32 base_low = base & BEACON_TIME_MASK_LOW;
3380         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3381         u32 interval = beacon_interval * TIME_UNIT;
3382         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3383             (addon & BEACON_TIME_MASK_HIGH);
3384
3385         if (base_low > addon_low)
3386                 res += base_low - addon_low;
3387         else if (base_low < addon_low) {
3388                 res += interval + base_low - addon_low;
3389                 res += (1 << 24);
3390         } else
3391                 res += (1 << 24);
3392
3393         return cpu_to_le32(res);
3394 }
3395
3396 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3397                                struct ieee80211_measurement_params *params,
3398                                u8 type)
3399 {
3400         struct iwl4965_spectrum_cmd spectrum;
3401         struct iwl4965_rx_packet *res;
3402         struct iwl4965_host_cmd cmd = {
3403                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3404                 .data = (void *)&spectrum,
3405                 .meta.flags = CMD_WANT_SKB,
3406         };
3407         u32 add_time = le64_to_cpu(params->start_time);
3408         int rc;
3409         int spectrum_resp_status;
3410         int duration = le16_to_cpu(params->duration);
3411
3412         if (iwl4965_is_associated(priv))
3413                 add_time =
3414                     iwl4965_usecs_to_beacons(
3415                         le64_to_cpu(params->start_time) - priv->last_tsf,
3416                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3417
3418         memset(&spectrum, 0, sizeof(spectrum));
3419
3420         spectrum.channel_count = cpu_to_le16(1);
3421         spectrum.flags =
3422             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3423         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3424         cmd.len = sizeof(spectrum);
3425         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3426
3427         if (iwl4965_is_associated(priv))
3428                 spectrum.start_time =
3429                     iwl4965_add_beacon_time(priv->last_beacon_time,
3430                                 add_time,
3431                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3432         else
3433                 spectrum.start_time = 0;
3434
3435         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3436         spectrum.channels[0].channel = params->channel;
3437         spectrum.channels[0].type = type;
3438         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3439                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3440                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3441
3442         rc = iwl4965_send_cmd_sync(priv, &cmd);
3443         if (rc)
3444                 return rc;
3445
3446         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3447         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3448                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3449                 rc = -EIO;
3450         }
3451
3452         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3453         switch (spectrum_resp_status) {
3454         case 0:         /* Command will be handled */
3455                 if (res->u.spectrum.id != 0xff) {
3456                         IWL_DEBUG_INFO
3457                             ("Replaced existing measurement: %d\n",
3458                              res->u.spectrum.id);
3459                         priv->measurement_status &= ~MEASUREMENT_READY;
3460                 }
3461                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3462                 rc = 0;
3463                 break;
3464
3465         case 1:         /* Command will not be handled */
3466                 rc = -EAGAIN;
3467                 break;
3468         }
3469
3470         dev_kfree_skb_any(cmd.meta.u.skb);
3471
3472         return rc;
3473 }
3474 #endif
3475
3476 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3477                                  struct iwl4965_tx_info *tx_sta)
3478 {
3479
3480         tx_sta->status.ack_signal = 0;
3481         tx_sta->status.excessive_retries = 0;
3482         tx_sta->status.queue_length = 0;
3483         tx_sta->status.queue_number = 0;
3484
3485         if (in_interrupt())
3486                 ieee80211_tx_status_irqsafe(priv->hw,
3487                                             tx_sta->skb[0], &(tx_sta->status));
3488         else
3489                 ieee80211_tx_status(priv->hw,
3490                                     tx_sta->skb[0], &(tx_sta->status));
3491
3492         tx_sta->skb[0] = NULL;
3493 }
3494
3495 /**
3496  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3497  *
3498  * When FW advances 'R' index, all entries between old and new 'R' index
3499  * need to be reclaimed. As result, some free space forms.  If there is
3500  * enough free space (> low mark), wake the stack that feeds us.
3501  */
3502 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3503 {
3504         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3505         struct iwl4965_queue *q = &txq->q;
3506         int nfreed = 0;
3507
3508         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3509                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3510                           "is out of range [0-%d] %d %d.\n", txq_id,
3511                           index, q->n_bd, q->write_ptr, q->read_ptr);
3512                 return 0;
3513         }
3514
3515         for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3516                 q->read_ptr != index;
3517                 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3518                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3519                         iwl4965_txstatus_to_ieee(priv,
3520                                         &(txq->txb[txq->q.read_ptr]));
3521                         iwl4965_hw_txq_free_tfd(priv, txq);
3522                 } else if (nfreed > 1) {
3523                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3524                                         q->write_ptr, q->read_ptr);
3525                         queue_work(priv->workqueue, &priv->restart);
3526                 }
3527                 nfreed++;
3528         }
3529
3530 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3531                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3532                         priv->mac80211_registered)
3533                 ieee80211_wake_queue(priv->hw, txq_id); */
3534
3535
3536         return nfreed;
3537 }
3538
3539 static int iwl4965_is_tx_success(u32 status)
3540 {
3541         status &= TX_STATUS_MSK;
3542         return (status == TX_STATUS_SUCCESS)
3543             || (status == TX_STATUS_DIRECT_DONE);
3544 }
3545
3546 /******************************************************************************
3547  *
3548  * Generic RX handler implementations
3549  *
3550  ******************************************************************************/
3551 #ifdef CONFIG_IWL4965_HT
3552
3553 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3554                                     struct ieee80211_hdr *hdr)
3555 {
3556         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3557                 return IWL_AP_ID;
3558         else {
3559                 u8 *da = ieee80211_get_DA(hdr);
3560                 return iwl4965_hw_find_station(priv, da);
3561         }
3562 }
3563
3564 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3565         struct iwl4965_priv *priv, int txq_id, int idx)
3566 {
3567         if (priv->txq[txq_id].txb[idx].skb[0])
3568                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3569                                 txb[idx].skb[0]->data;
3570         return NULL;
3571 }
3572
3573 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3574 {
3575         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3576                                 tx_resp->frame_count);
3577         return le32_to_cpu(*scd_ssn) & MAX_SN;
3578
3579 }
3580
3581 /**
3582  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3583  */
3584 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3585                                       struct iwl4965_ht_agg *agg,
3586                                       struct iwl4965_tx_resp_agg *tx_resp,
3587                                       u16 start_idx)
3588 {
3589         u16 status;
3590         struct agg_tx_status *frame_status = &tx_resp->status;
3591         struct ieee80211_tx_status *tx_status = NULL;
3592         struct ieee80211_hdr *hdr = NULL;
3593         int i, sh;
3594         int txq_id, idx;
3595         u16 seq;
3596
3597         if (agg->wait_for_ba)
3598                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3599
3600         agg->frame_count = tx_resp->frame_count;
3601         agg->start_idx = start_idx;
3602         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3603         agg->bitmap = 0;
3604
3605         /* # frames attempted by Tx command */
3606         if (agg->frame_count == 1) {
3607                 /* Only one frame was attempted; no block-ack will arrive */
3608                 status = le16_to_cpu(frame_status[0].status);
3609                 seq  = le16_to_cpu(frame_status[0].sequence);
3610                 idx = SEQ_TO_INDEX(seq);
3611                 txq_id = SEQ_TO_QUEUE(seq);
3612
3613                 /* FIXME: code repetition */
3614                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3615                                    agg->frame_count, agg->start_idx, idx);
3616
3617                 tx_status = &(priv->txq[txq_id].txb[idx].status);
3618                 tx_status->retry_count = tx_resp->failure_frame;
3619                 tx_status->queue_number = status & 0xff;
3620                 tx_status->queue_length = tx_resp->failure_rts;
3621                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3622                 tx_status->flags = iwl4965_is_tx_success(status)?
3623                         IEEE80211_TX_STATUS_ACK : 0;
3624                 tx_status->control.tx_rate =
3625                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3626                 /* FIXME: code repetition end */
3627
3628                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3629                                     status & 0xff, tx_resp->failure_frame);
3630                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3631                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3632
3633                 agg->wait_for_ba = 0;
3634         } else {
3635                 /* Two or more frames were attempted; expect block-ack */
3636                 u64 bitmap = 0;
3637                 int start = agg->start_idx;
3638
3639                 /* Construct bit-map of pending frames within Tx window */
3640                 for (i = 0; i < agg->frame_count; i++) {
3641                         u16 sc;
3642                         status = le16_to_cpu(frame_status[i].status);
3643                         seq  = le16_to_cpu(frame_status[i].sequence);
3644                         idx = SEQ_TO_INDEX(seq);
3645                         txq_id = SEQ_TO_QUEUE(seq);
3646
3647                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3648                                       AGG_TX_STATE_ABORT_MSK))
3649                                 continue;
3650
3651                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3652                                            agg->frame_count, txq_id, idx);
3653
3654                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3655
3656                         sc = le16_to_cpu(hdr->seq_ctrl);
3657                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3658                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3659                                           " idx=%d, seq_idx=%d, seq=%d\n",
3660                                           idx, SEQ_TO_SN(sc),
3661                                           hdr->seq_ctrl);
3662                                 return -1;
3663                         }
3664
3665                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3666                                            i, idx, SEQ_TO_SN(sc));
3667
3668                         sh = idx - start;
3669                         if (sh > 64) {
3670                                 sh = (start - idx) + 0xff;
3671                                 bitmap = bitmap << sh;
3672                                 sh = 0;
3673                                 start = idx;
3674                         } else if (sh < -64)
3675                                 sh  = 0xff - (start - idx);
3676                         else if (sh < 0) {
3677                                 sh = start - idx;
3678                                 start = idx;
3679                                 bitmap = bitmap << sh;
3680                                 sh = 0;
3681                         }
3682                         bitmap |= (1 << sh);
3683                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3684                                            start, (u32)(bitmap & 0xFFFFFFFF));
3685                 }
3686
3687                 agg->bitmap = bitmap;
3688                 agg->start_idx = start;
3689                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3690                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3691                                    agg->frame_count, agg->start_idx,
3692                                    agg->bitmap);
3693
3694                 if (bitmap)
3695                         agg->wait_for_ba = 1;
3696         }
3697         return 0;
3698 }
3699 #endif
3700
3701 /**
3702  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3703  */
3704 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3705                             struct iwl4965_rx_mem_buffer *rxb)
3706 {
3707         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3708         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3709         int txq_id = SEQ_TO_QUEUE(sequence);
3710         int index = SEQ_TO_INDEX(sequence);
3711         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3712         struct ieee80211_tx_status *tx_status;
3713         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3714         u32  status = le32_to_cpu(tx_resp->status);
3715 #ifdef CONFIG_IWL4965_HT
3716         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3717         struct ieee80211_hdr *hdr;
3718         __le16 *qc;
3719 #endif
3720
3721         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3722                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3723                           "is out of range [0-%d] %d %d\n", txq_id,
3724                           index, txq->q.n_bd, txq->q.write_ptr,
3725                           txq->q.read_ptr);
3726                 return;
3727         }
3728
3729 #ifdef CONFIG_IWL4965_HT
3730         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3731         qc = ieee80211_get_qos_ctrl(hdr);
3732
3733         if (qc)
3734                 tid = le16_to_cpu(*qc) & 0xf;
3735
3736         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3737         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3738                 IWL_ERROR("Station not known\n");
3739                 return;
3740         }
3741
3742         if (txq->sched_retry) {
3743                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3744                 struct iwl4965_ht_agg *agg = NULL;
3745
3746                 if (!qc)
3747                         return;
3748
3749                 agg = &priv->stations[sta_id].tid[tid].agg;
3750
3751                 iwl4965_tx_status_reply_tx(priv, agg,
3752                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3753
3754                 if ((tx_resp->frame_count == 1) &&
3755                     !iwl4965_is_tx_success(status)) {
3756                         /* TODO: send BAR */
3757                 }
3758
3759                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3760                         int freed;
3761                         index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3762                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3763                                            "%d index %d\n", scd_ssn , index);
3764                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3765                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3766
3767                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3768                             txq_id >= 0 && priv->mac80211_registered &&
3769                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3770                                 ieee80211_wake_queue(priv->hw, txq_id);
3771
3772                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3773                 }
3774         } else {
3775 #endif /* CONFIG_IWL4965_HT */
3776         tx_status = &(txq->txb[txq->q.read_ptr].status);
3777
3778         tx_status->retry_count = tx_resp->failure_frame;
3779         tx_status->queue_number = status;
3780         tx_status->queue_length = tx_resp->bt_kill_count;
3781         tx_status->queue_length |= tx_resp->failure_rts;
3782
3783         tx_status->flags =
3784             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3785
3786         tx_status->control.tx_rate =
3787                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3788
3789         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3790                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3791                      status, le32_to_cpu(tx_resp->rate_n_flags),
3792                      tx_resp->failure_frame);
3793
3794         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3795         if (index != -1) {
3796                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3797 #ifdef CONFIG_IWL4965_HT
3798                 if (tid != MAX_TID_COUNT)
3799                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3800                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3801                         (txq_id >= 0) &&
3802                         priv->mac80211_registered)
3803                         ieee80211_wake_queue(priv->hw, txq_id);
3804                 if (tid != MAX_TID_COUNT)
3805                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3806 #endif
3807         }
3808 #ifdef CONFIG_IWL4965_HT
3809         }
3810 #endif /* CONFIG_IWL4965_HT */
3811
3812         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3813                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3814 }
3815
3816
3817 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3818                                struct iwl4965_rx_mem_buffer *rxb)
3819 {
3820         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3821         struct iwl4965_alive_resp *palive;
3822         struct delayed_work *pwork;
3823
3824         palive = &pkt->u.alive_frame;
3825
3826         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3827                        "0x%01X 0x%01X\n",
3828                        palive->is_valid, palive->ver_type,
3829                        palive->ver_subtype);
3830
3831         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3832                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3833                 memcpy(&priv->card_alive_init,
3834                        &pkt->u.alive_frame,
3835                        sizeof(struct iwl4965_init_alive_resp));
3836                 pwork = &priv->init_alive_start;
3837         } else {
3838                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3839                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3840                        sizeof(struct iwl4965_alive_resp));
3841                 pwork = &priv->alive_start;
3842         }
3843
3844         /* We delay the ALIVE response by 5ms to
3845          * give the HW RF Kill time to activate... */
3846         if (palive->is_valid == UCODE_VALID_OK)
3847                 queue_delayed_work(priv->workqueue, pwork,
3848                                    msecs_to_jiffies(5));
3849         else
3850                 IWL_WARNING("uCode did not respond OK.\n");
3851 }
3852
3853 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3854                                  struct iwl4965_rx_mem_buffer *rxb)
3855 {
3856         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3857
3858         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3859         return;
3860 }
3861
3862 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3863                                struct iwl4965_rx_mem_buffer *rxb)
3864 {
3865         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3866
3867         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3868                 "seq 0x%04X ser 0x%08X\n",
3869                 le32_to_cpu(pkt->u.err_resp.error_type),
3870                 get_cmd_string(pkt->u.err_resp.cmd_id),
3871                 pkt->u.err_resp.cmd_id,
3872                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3873                 le32_to_cpu(pkt->u.err_resp.error_info));
3874 }
3875
3876 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3877
3878 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3879 {
3880         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3881         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3882         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3883         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3884                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3885         rxon->channel = csa->channel;
3886         priv->staging_rxon.channel = csa->channel;
3887 }
3888
3889 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3890                                           struct iwl4965_rx_mem_buffer *rxb)
3891 {
3892 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3893         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3894         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3895
3896         if (!report->state) {
3897                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3898                           "Spectrum Measure Notification: Start\n");
3899                 return;
3900         }
3901
3902         memcpy(&priv->measure_report, report, sizeof(*report));
3903         priv->measurement_status |= MEASUREMENT_READY;
3904 #endif
3905 }
3906
3907 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3908                                   struct iwl4965_rx_mem_buffer *rxb)
3909 {
3910 #ifdef CONFIG_IWL4965_DEBUG
3911         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3912         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3913         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3914                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3915 #endif
3916 }
3917
3918 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3919                                              struct iwl4965_rx_mem_buffer *rxb)
3920 {
3921         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3922         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3923                         "notification for %s:\n",
3924                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3925         iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3926 }
3927
3928 static void iwl4965_bg_beacon_update(struct work_struct *work)
3929 {
3930         struct iwl4965_priv *priv =
3931                 container_of(work, struct iwl4965_priv, beacon_update);
3932         struct sk_buff *beacon;
3933
3934         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3935         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3936
3937         if (!beacon) {
3938                 IWL_ERROR("update beacon failed\n");
3939                 return;
3940         }
3941
3942         mutex_lock(&priv->mutex);
3943         /* new beacon skb is allocated every time; dispose previous.*/
3944         if (priv->ibss_beacon)
3945                 dev_kfree_skb(priv->ibss_beacon);
3946
3947         priv->ibss_beacon = beacon;
3948         mutex_unlock(&priv->mutex);
3949
3950         iwl4965_send_beacon_cmd(priv);
3951 }
3952
3953 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3954                                 struct iwl4965_rx_mem_buffer *rxb)
3955 {
3956 #ifdef CONFIG_IWL4965_DEBUG
3957         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3958         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3959         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3960
3961         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3962                 "tsf %d %d rate %d\n",
3963                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3964                 beacon->beacon_notify_hdr.failure_frame,
3965                 le32_to_cpu(beacon->ibss_mgr_status),
3966                 le32_to_cpu(beacon->high_tsf),
3967                 le32_to_cpu(beacon->low_tsf), rate);
3968 #endif
3969
3970         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3971             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3972                 queue_work(priv->workqueue, &priv->beacon_update);
3973 }
3974
3975 /* Service response to REPLY_SCAN_CMD (0x80) */
3976 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
3977                               struct iwl4965_rx_mem_buffer *rxb)
3978 {
3979 #ifdef CONFIG_IWL4965_DEBUG
3980         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3981         struct iwl4965_scanreq_notification *notif =
3982             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3983
3984         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3985 #endif
3986 }
3987
3988 /* Service SCAN_START_NOTIFICATION (0x82) */
3989 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
3990                                     struct iwl4965_rx_mem_buffer *rxb)
3991 {
3992         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3993         struct iwl4965_scanstart_notification *notif =
3994             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3995         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3996         IWL_DEBUG_SCAN("Scan start: "
3997                        "%d [802.11%s] "
3998                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3999                        notif->channel,
4000                        notif->band ? "bg" : "a",
4001                        notif->tsf_high,
4002                        notif->tsf_low, notif->status, notif->beacon_timer);
4003 }
4004
4005 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
4006 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
4007                                       struct iwl4965_rx_mem_buffer *rxb)
4008 {
4009         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4010         struct iwl4965_scanresults_notification *notif =
4011             (struct iwl4965_scanresults_notification *)pkt->u.raw;
4012
4013         IWL_DEBUG_SCAN("Scan ch.res: "
4014                        "%d [802.11%s] "
4015                        "(TSF: 0x%08X:%08X) - %d "
4016                        "elapsed=%lu usec (%dms since last)\n",
4017                        notif->channel,
4018                        notif->band ? "bg" : "a",
4019                        le32_to_cpu(notif->tsf_high),
4020                        le32_to_cpu(notif->tsf_low),
4021                        le32_to_cpu(notif->statistics[0]),
4022                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
4023                        jiffies_to_msecs(elapsed_jiffies
4024                                         (priv->last_scan_jiffies, jiffies)));
4025
4026         priv->last_scan_jiffies = jiffies;
4027         priv->next_scan_jiffies = 0;
4028 }
4029
4030 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
4031 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
4032                                        struct iwl4965_rx_mem_buffer *rxb)
4033 {
4034         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4035         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
4036
4037         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
4038                        scan_notif->scanned_channels,
4039                        scan_notif->tsf_low,
4040                        scan_notif->tsf_high, scan_notif->status);
4041
4042         /* The HW is no longer scanning */
4043         clear_bit(STATUS_SCAN_HW, &priv->status);
4044
4045         /* The scan completion notification came in, so kill that timer... */
4046         cancel_delayed_work(&priv->scan_check);
4047
4048         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
4049                        (priv->scan_bands == 2) ? "2.4" : "5.2",
4050                        jiffies_to_msecs(elapsed_jiffies
4051                                         (priv->scan_pass_start, jiffies)));
4052
4053         /* Remove this scanned band from the list
4054          * of pending bands to scan */
4055         priv->scan_bands--;
4056
4057         /* If a request to abort was given, or the scan did not succeed
4058          * then we reset the scan state machine and terminate,
4059          * re-queuing another scan if one has been requested */
4060         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4061                 IWL_DEBUG_INFO("Aborted scan completed.\n");
4062                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
4063         } else {
4064                 /* If there are more bands on this scan pass reschedule */
4065                 if (priv->scan_bands > 0)
4066                         goto reschedule;
4067         }
4068
4069         priv->last_scan_jiffies = jiffies;
4070         priv->next_scan_jiffies = 0;
4071         IWL_DEBUG_INFO("Setting scan to off\n");
4072
4073         clear_bit(STATUS_SCANNING, &priv->status);
4074
4075         IWL_DEBUG_INFO("Scan took %dms\n",
4076                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4077
4078         queue_work(priv->workqueue, &priv->scan_completed);
4079
4080         return;
4081
4082 reschedule:
4083         priv->scan_pass_start = jiffies;
4084         queue_work(priv->workqueue, &priv->request_scan);
4085 }
4086
4087 /* Handle notification from uCode that card's power state is changing
4088  * due to software, hardware, or critical temperature RFKILL */
4089 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4090                                     struct iwl4965_rx_mem_buffer *rxb)
4091 {
4092         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4093         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4094         unsigned long status = priv->status;
4095
4096         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4097                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4098                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4099
4100         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4101                      RF_CARD_DISABLED)) {
4102
4103                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4104                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4105
4106                 if (!iwl4965_grab_nic_access(priv)) {
4107                         iwl4965_write_direct32(
4108                                 priv, HBUS_TARG_MBX_C,
4109                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4110
4111                         iwl4965_release_nic_access(priv);
4112                 }
4113
4114                 if (!(flags & RXON_CARD_DISABLED)) {
4115                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4116                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4117                         if (!iwl4965_grab_nic_access(priv)) {
4118                                 iwl4965_write_direct32(
4119                                         priv, HBUS_TARG_MBX_C,
4120                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4121
4122                                 iwl4965_release_nic_access(priv);
4123                         }
4124                 }
4125
4126                 if (flags & RF_CARD_DISABLED) {
4127                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4128                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4129                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4130                         if (!iwl4965_grab_nic_access(priv))
4131                                 iwl4965_release_nic_access(priv);
4132                 }
4133         }
4134
4135         if (flags & HW_CARD_DISABLED)
4136                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4137         else
4138                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4139
4140
4141         if (flags & SW_CARD_DISABLED)
4142                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4143         else
4144                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4145
4146         if (!(flags & RXON_CARD_DISABLED))
4147                 iwl4965_scan_cancel(priv);
4148
4149         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4150              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4151             (test_bit(STATUS_RF_KILL_SW, &status) !=
4152              test_bit(STATUS_RF_KILL_SW, &priv->status)))
4153                 queue_work(priv->workqueue, &priv->rf_kill);
4154         else
4155                 wake_up_interruptible(&priv->wait_command_queue);
4156 }
4157
4158 /**
4159  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4160  *
4161  * Setup the RX handlers for each of the reply types sent from the uCode
4162  * to the host.
4163  *
4164  * This function chains into the hardware specific files for them to setup
4165  * any hardware specific handlers as well.
4166  */
4167 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4168 {
4169         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4170         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4171         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4172         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4173         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4174             iwl4965_rx_spectrum_measure_notif;
4175         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4176         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4177             iwl4965_rx_pm_debug_statistics_notif;
4178         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4179
4180         /*
4181          * The same handler is used for both the REPLY to a discrete
4182          * statistics request from the host as well as for the periodic
4183          * statistics notifications (after received beacons) from the uCode.
4184          */
4185         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4186         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4187
4188         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4189         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4190         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4191             iwl4965_rx_scan_results_notif;
4192         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4193             iwl4965_rx_scan_complete_notif;
4194         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4195         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4196
4197         /* Set up hardware specific Rx handlers */
4198         iwl4965_hw_rx_handler_setup(priv);
4199 }
4200
4201 /**
4202  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4203  * @rxb: Rx buffer to reclaim
4204  *
4205  * If an Rx buffer has an async callback associated with it the callback
4206  * will be executed.  The attached skb (if present) will only be freed
4207  * if the callback returns 1
4208  */
4209 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4210                                 struct iwl4965_rx_mem_buffer *rxb)
4211 {
4212         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4213         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4214         int txq_id = SEQ_TO_QUEUE(sequence);
4215         int index = SEQ_TO_INDEX(sequence);
4216         int huge = sequence & SEQ_HUGE_FRAME;
4217         int cmd_index;
4218         struct iwl4965_cmd *cmd;
4219
4220         /* If a Tx command is being handled and it isn't in the actual
4221          * command queue then there a command routing bug has been introduced
4222          * in the queue management code. */
4223         if (txq_id != IWL_CMD_QUEUE_NUM)
4224                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4225                           txq_id, pkt->hdr.cmd);
4226         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4227
4228         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4229         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4230
4231         /* Input error checking is done when commands are added to queue. */
4232         if (cmd->meta.flags & CMD_WANT_SKB) {
4233                 cmd->meta.source->u.skb = rxb->skb;
4234                 rxb->skb = NULL;
4235         } else if (cmd->meta.u.callback &&
4236                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
4237                 rxb->skb = NULL;
4238
4239         iwl4965_tx_queue_reclaim(priv, txq_id, index);
4240
4241         if (!(cmd->meta.flags & CMD_ASYNC)) {
4242                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4243                 wake_up_interruptible(&priv->wait_command_queue);
4244         }
4245 }
4246
4247 /************************** RX-FUNCTIONS ****************************/
4248 /*
4249  * Rx theory of operation
4250  *
4251  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4252  * each of which point to Receive Buffers to be filled by 4965.  These get
4253  * used not only for Rx frames, but for any command response or notification
4254  * from the 4965.  The driver and 4965 manage the Rx buffers by means
4255  * of indexes into the circular buffer.
4256  *
4257  * Rx Queue Indexes
4258  * The host/firmware share two index registers for managing the Rx buffers.
4259  *
4260  * The READ index maps to the first position that the firmware may be writing
4261  * to -- the driver can read up to (but not including) this position and get
4262  * good data.
4263  * The READ index is managed by the firmware once the card is enabled.
4264  *
4265  * The WRITE index maps to the last position the driver has read from -- the
4266  * position preceding WRITE is the last slot the firmware can place a packet.
4267  *
4268  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4269  * WRITE = READ.
4270  *
4271  * During initialization, the host sets up the READ queue position to the first
4272  * INDEX position, and WRITE to the last (READ - 1 wrapped)
4273  *
4274  * When the firmware places a packet in a buffer, it will advance the READ index
4275  * and fire the RX interrupt.  The driver can then query the READ index and
4276  * process as many packets as possible, moving the WRITE index forward as it
4277  * resets the Rx queue buffers with new memory.
4278  *
4279  * The management in the driver is as follows:
4280  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
4281  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4282  *   to replenish the iwl->rxq->rx_free.
4283  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4284  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
4285  *   'processed' and 'read' driver indexes as well)
4286  * + A received packet is processed and handed to the kernel network stack,
4287  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
4288  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4289  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4290  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
4291  *   were enough free buffers and RX_STALLED is set it is cleared.
4292  *
4293  *
4294  * Driver sequence:
4295  *
4296  * iwl4965_rx_queue_alloc()   Allocates rx_free
4297  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
4298  *                            iwl4965_rx_queue_restock
4299  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4300  *                            queue, updates firmware pointers, and updates
4301  *                            the WRITE index.  If insufficient rx_free buffers
4302  *                            are available, schedules iwl4965_rx_replenish
4303  *
4304  * -- enable interrupts --
4305  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
4306  *                            READ INDEX, detaching the SKB from the pool.
4307  *                            Moves the packet buffer from queue to rx_used.
4308  *                            Calls iwl4965_rx_queue_restock to refill any empty
4309  *                            slots.
4310  * ...
4311  *
4312  */
4313
4314 /**
4315  * iwl4965_rx_queue_space - Return number of free slots available in queue.
4316  */
4317 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4318 {
4319         int s = q->read - q->write;
4320         if (s <= 0)
4321                 s += RX_QUEUE_SIZE;
4322         /* keep some buffer to not confuse full and empty queue */
4323         s -= 2;
4324         if (s < 0)
4325                 s = 0;
4326         return s;
4327 }
4328
4329 /**
4330  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4331  */
4332 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4333 {
4334         u32 reg = 0;
4335         int rc = 0;
4336         unsigned long flags;
4337
4338         spin_lock_irqsave(&q->lock, flags);
4339
4340         if (q->need_update == 0)
4341                 goto exit_unlock;
4342
4343         /* If power-saving is in use, make sure device is awake */
4344         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4345                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4346
4347                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4348                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4349                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4350                         goto exit_unlock;
4351                 }
4352
4353                 rc = iwl4965_grab_nic_access(priv);
4354                 if (rc)
4355                         goto exit_unlock;
4356
4357                 /* Device expects a multiple of 8 */
4358                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4359                                      q->write & ~0x7);
4360                 iwl4965_release_nic_access(priv);
4361
4362         /* Else device is assumed to be awake */
4363         } else
4364                 /* Device expects a multiple of 8 */
4365                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4366
4367
4368         q->need_update = 0;
4369
4370  exit_unlock:
4371         spin_unlock_irqrestore(&q->lock, flags);
4372         return rc;
4373 }
4374
4375 /**
4376  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4377  */
4378 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4379                                           dma_addr_t dma_addr)
4380 {
4381         return cpu_to_le32((u32)(dma_addr >> 8));
4382 }
4383
4384
4385 /**
4386  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4387  *
4388  * If there are slots in the RX queue that need to be restocked,
4389  * and we have free pre-allocated buffers, fill the ranks as much
4390  * as we can, pulling from rx_free.
4391  *
4392  * This moves the 'write' index forward to catch up with 'processed', and
4393  * also updates the memory address in the firmware to reference the new
4394  * target buffer.
4395  */
4396 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4397 {
4398         struct iwl4965_rx_queue *rxq = &priv->rxq;
4399         struct list_head *element;
4400         struct iwl4965_rx_mem_buffer *rxb;
4401         unsigned long flags;
4402         int write, rc;
4403
4404         spin_lock_irqsave(&rxq->lock, flags);
4405         write = rxq->write & ~0x7;
4406         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4407                 /* Get next free Rx buffer, remove from free list */
4408                 element = rxq->rx_free.next;
4409                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4410                 list_del(element);
4411
4412                 /* Point to Rx buffer via next RBD in circular buffer */
4413                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4414                 rxq->queue[rxq->write] = rxb;
4415                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4416                 rxq->free_count--;
4417         }
4418         spin_unlock_irqrestore(&rxq->lock, flags);
4419         /* If the pre-allocated buffer pool is dropping low, schedule to
4420          * refill it */
4421         if (rxq->free_count <= RX_LOW_WATERMARK)
4422                 queue_work(priv->workqueue, &priv->rx_replenish);
4423
4424
4425         /* If we've added more space for the firmware to place data, tell it.
4426          * Increment device's write pointer in multiples of 8. */
4427         if ((write != (rxq->write & ~0x7))
4428             || (abs(rxq->write - rxq->read) > 7)) {
4429                 spin_lock_irqsave(&rxq->lock, flags);
4430                 rxq->need_update = 1;
4431                 spin_unlock_irqrestore(&rxq->lock, flags);
4432                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4433                 if (rc)
4434                         return rc;
4435         }
4436
4437         return 0;
4438 }
4439
4440 /**
4441  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4442  *
4443  * When moving to rx_free an SKB is allocated for the slot.
4444  *
4445  * Also restock the Rx queue via iwl4965_rx_queue_restock.
4446  * This is called as a scheduled work item (except for during initialization)
4447  */
4448 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4449 {
4450         struct iwl4965_rx_queue *rxq = &priv->rxq;
4451         struct list_head *element;
4452         struct iwl4965_rx_mem_buffer *rxb;
4453         unsigned long flags;
4454         spin_lock_irqsave(&rxq->lock, flags);
4455         while (!list_empty(&rxq->rx_used)) {
4456                 element = rxq->rx_used.next;
4457                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4458
4459                 /* Alloc a new receive buffer */
4460                 rxb->skb =
4461                     alloc_skb(priv->hw_setting.rx_buf_size,
4462                                 __GFP_NOWARN | GFP_ATOMIC);
4463                 if (!rxb->skb) {
4464                         if (net_ratelimit())
4465                                 printk(KERN_CRIT DRV_NAME
4466                                        ": Can not allocate SKB buffers\n");
4467                         /* We don't reschedule replenish work here -- we will
4468                          * call the restock method and if it still needs
4469                          * more buffers it will schedule replenish */
4470                         break;
4471                 }
4472                 priv->alloc_rxb_skb++;
4473                 list_del(element);
4474
4475                 /* Get physical address of RB/SKB */
4476                 rxb->dma_addr =
4477                     pci_map_single(priv->pci_dev, rxb->skb->data,
4478                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4479                 list_add_tail(&rxb->list, &rxq->rx_free);
4480                 rxq->free_count++;
4481         }
4482         spin_unlock_irqrestore(&rxq->lock, flags);
4483 }
4484
4485 /*
4486  * this should be called while priv->lock is locked
4487 */
4488 static void __iwl4965_rx_replenish(void *data)
4489 {
4490         struct iwl4965_priv *priv = data;
4491
4492         iwl4965_rx_allocate(priv);
4493         iwl4965_rx_queue_restock(priv);
4494 }
4495
4496
4497 void iwl4965_rx_replenish(void *data)
4498 {
4499         struct iwl4965_priv *priv = data;
4500         unsigned long flags;
4501
4502         iwl4965_rx_allocate(priv);
4503
4504         spin_lock_irqsave(&priv->lock, flags);
4505         iwl4965_rx_queue_restock(priv);
4506         spin_unlock_irqrestore(&priv->lock, flags);
4507 }
4508
4509 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4510  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4511  * This free routine walks the list of POOL entries and if SKB is set to
4512  * non NULL it is unmapped and freed
4513  */
4514 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4515 {
4516         int i;
4517         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4518                 if (rxq->pool[i].skb != NULL) {
4519                         pci_unmap_single(priv->pci_dev,
4520                                          rxq->pool[i].dma_addr,
4521                                          priv->hw_setting.rx_buf_size,
4522                                          PCI_DMA_FROMDEVICE);
4523                         dev_kfree_skb(rxq->pool[i].skb);
4524                 }
4525         }
4526
4527         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4528                             rxq->dma_addr);
4529         rxq->bd = NULL;
4530 }
4531
4532 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4533 {
4534         struct iwl4965_rx_queue *rxq = &priv->rxq;
4535         struct pci_dev *dev = priv->pci_dev;
4536         int i;
4537
4538         spin_lock_init(&rxq->lock);
4539         INIT_LIST_HEAD(&rxq->rx_free);
4540         INIT_LIST_HEAD(&rxq->rx_used);
4541
4542         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4543         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4544         if (!rxq->bd)
4545                 return -ENOMEM;
4546
4547         /* Fill the rx_used queue with _all_ of the Rx buffers */
4548         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4549                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4550
4551         /* Set us so that we have processed and used all buffers, but have
4552          * not restocked the Rx queue with fresh buffers */
4553         rxq->read = rxq->write = 0;
4554         rxq->free_count = 0;
4555         rxq->need_update = 0;
4556         return 0;
4557 }
4558
4559 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4560 {
4561         unsigned long flags;
4562         int i;
4563         spin_lock_irqsave(&rxq->lock, flags);
4564         INIT_LIST_HEAD(&rxq->rx_free);
4565         INIT_LIST_HEAD(&rxq->rx_used);
4566         /* Fill the rx_used queue with _all_ of the Rx buffers */
4567         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4568                 /* In the reset function, these buffers may have been allocated
4569                  * to an SKB, so we need to unmap and free potential storage */
4570                 if (rxq->pool[i].skb != NULL) {
4571                         pci_unmap_single(priv->pci_dev,
4572                                          rxq->pool[i].dma_addr,
4573                                          priv->hw_setting.rx_buf_size,
4574                                          PCI_DMA_FROMDEVICE);
4575                         priv->alloc_rxb_skb--;
4576                         dev_kfree_skb(rxq->pool[i].skb);
4577                         rxq->pool[i].skb = NULL;
4578                 }
4579                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4580         }
4581
4582         /* Set us so that we have processed and used all buffers, but have
4583          * not restocked the Rx queue with fresh buffers */
4584         rxq->read = rxq->write = 0;
4585         rxq->free_count = 0;
4586         spin_unlock_irqrestore(&rxq->lock, flags);
4587 }
4588
4589 /* Convert linear signal-to-noise ratio into dB */
4590 static u8 ratio2dB[100] = {
4591 /*       0   1   2   3   4   5   6   7   8   9 */
4592          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4593         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4594         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4595         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4596         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4597         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4598         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4599         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4600         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4601         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4602 };
4603
4604 /* Calculates a relative dB value from a ratio of linear
4605  *   (i.e. not dB) signal levels.
4606  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4607 int iwl4965_calc_db_from_ratio(int sig_ratio)
4608 {
4609         /* 1000:1 or higher just report as 60 dB */
4610         if (sig_ratio >= 1000)
4611                 return 60;
4612
4613         /* 100:1 or higher, divide by 10 and use table,
4614          *   add 20 dB to make up for divide by 10 */
4615         if (sig_ratio >= 100)
4616                 return (20 + (int)ratio2dB[sig_ratio/10]);
4617
4618         /* We shouldn't see this */
4619         if (sig_ratio < 1)
4620                 return 0;
4621
4622         /* Use table for ratios 1:1 - 99:1 */
4623         return (int)ratio2dB[sig_ratio];
4624 }
4625
4626 #define PERFECT_RSSI (-20) /* dBm */
4627 #define WORST_RSSI (-95)   /* dBm */
4628 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4629
4630 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4631  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4632  *   about formulas used below. */
4633 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4634 {
4635         int sig_qual;
4636         int degradation = PERFECT_RSSI - rssi_dbm;
4637
4638         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4639          * as indicator; formula is (signal dbm - noise dbm).
4640          * SNR at or above 40 is a great signal (100%).
4641          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4642          * Weakest usable signal is usually 10 - 15 dB SNR. */
4643         if (noise_dbm) {
4644                 if (rssi_dbm - noise_dbm >= 40)
4645                         return 100;
4646                 else if (rssi_dbm < noise_dbm)
4647                         return 0;
4648                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4649
4650         /* Else use just the signal level.
4651          * This formula is a least squares fit of data points collected and
4652          *   compared with a reference system that had a percentage (%) display
4653          *   for signal quality. */
4654         } else
4655                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4656                             (15 * RSSI_RANGE + 62 * degradation)) /
4657                            (RSSI_RANGE * RSSI_RANGE);
4658
4659         if (sig_qual > 100)
4660                 sig_qual = 100;
4661         else if (sig_qual < 1)
4662                 sig_qual = 0;
4663
4664         return sig_qual;
4665 }
4666
4667 /**
4668  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4669  *
4670  * Uses the priv->rx_handlers callback function array to invoke
4671  * the appropriate handlers, including command responses,
4672  * frame-received notifications, and other notifications.
4673  */
4674 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4675 {
4676         struct iwl4965_rx_mem_buffer *rxb;
4677         struct iwl4965_rx_packet *pkt;
4678         struct iwl4965_rx_queue *rxq = &priv->rxq;
4679         u32 r, i;
4680         int reclaim;
4681         unsigned long flags;
4682         u8 fill_rx = 0;
4683         u32 count = 8;
4684
4685         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4686          * buffer that the driver may process (last buffer filled by ucode). */
4687         r = iwl4965_hw_get_rx_read(priv);
4688         i = rxq->read;
4689
4690         /* Rx interrupt, but nothing sent from uCode */
4691         if (i == r)
4692                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4693
4694         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4695                 fill_rx = 1;
4696
4697         while (i != r) {
4698                 rxb = rxq->queue[i];
4699
4700                 /* If an RXB doesn't have a Rx queue slot associated with it,
4701                  * then a bug has been introduced in the queue refilling
4702                  * routines -- catch it here */
4703                 BUG_ON(rxb == NULL);
4704
4705                 rxq->queue[i] = NULL;
4706
4707                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4708                                             priv->hw_setting.rx_buf_size,
4709                                             PCI_DMA_FROMDEVICE);
4710                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4711
4712                 /* Reclaim a command buffer only if this packet is a response
4713                  *   to a (driver-originated) command.
4714                  * If the packet (e.g. Rx frame) originated from uCode,
4715                  *   there is no command buffer to reclaim.
4716                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4717                  *   but apparently a few don't get set; catch them here. */
4718                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4719                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4720                         (pkt->hdr.cmd != REPLY_4965_RX) &&
4721                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4722                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4723                         (pkt->hdr.cmd != REPLY_TX);
4724
4725                 /* Based on type of command response or notification,
4726                  *   handle those that need handling via function in
4727                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4728                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4729                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4730                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4731                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4732                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4733                 } else {
4734                         /* No handling needed */
4735                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4736                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4737                                 r, i, get_cmd_string(pkt->hdr.cmd),
4738                                 pkt->hdr.cmd);
4739                 }
4740
4741                 if (reclaim) {
4742                         /* Invoke any callbacks, transfer the skb to caller, and
4743                          * fire off the (possibly) blocking iwl4965_send_cmd()
4744                          * as we reclaim the driver command queue */
4745                         if (rxb && rxb->skb)
4746                                 iwl4965_tx_cmd_complete(priv, rxb);
4747                         else
4748                                 IWL_WARNING("Claim null rxb?\n");
4749                 }
4750
4751                 /* For now we just don't re-use anything.  We can tweak this
4752                  * later to try and re-use notification packets and SKBs that
4753                  * fail to Rx correctly */
4754                 if (rxb->skb != NULL) {
4755                         priv->alloc_rxb_skb--;
4756                         dev_kfree_skb_any(rxb->skb);
4757                         rxb->skb = NULL;
4758                 }
4759
4760                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4761                                  priv->hw_setting.rx_buf_size,
4762                                  PCI_DMA_FROMDEVICE);
4763                 spin_lock_irqsave(&rxq->lock, flags);
4764                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4765                 spin_unlock_irqrestore(&rxq->lock, flags);
4766                 i = (i + 1) & RX_QUEUE_MASK;
4767                 /* If there are a lot of unused frames,
4768                  * restock the Rx queue so ucode wont assert. */
4769                 if (fill_rx) {
4770                         count++;
4771                         if (count >= 8) {
4772                                 priv->rxq.read = i;
4773                                 __iwl4965_rx_replenish(priv);
4774                                 count = 0;
4775                         }
4776                 }
4777         }
4778
4779         /* Backtrack one entry */
4780         priv->rxq.read = i;
4781         iwl4965_rx_queue_restock(priv);
4782 }
4783
4784 /**
4785  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4786  */
4787 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4788                                   struct iwl4965_tx_queue *txq)
4789 {
4790         u32 reg = 0;
4791         int rc = 0;
4792         int txq_id = txq->q.id;
4793
4794         if (txq->need_update == 0)
4795                 return rc;
4796
4797         /* if we're trying to save power */
4798         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4799                 /* wake up nic if it's powered down ...
4800                  * uCode will wake up, and interrupt us again, so next
4801                  * time we'll skip this part. */
4802                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4803
4804                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4805                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4806                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4807                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4808                         return rc;
4809                 }
4810
4811                 /* restore this queue's parameters in nic hardware. */
4812                 rc = iwl4965_grab_nic_access(priv);
4813                 if (rc)
4814                         return rc;
4815                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4816                                      txq->q.write_ptr | (txq_id << 8));
4817                 iwl4965_release_nic_access(priv);
4818
4819         /* else not in power-save mode, uCode will never sleep when we're
4820          * trying to tx (during RFKILL, we're not trying to tx). */
4821         } else
4822                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4823                             txq->q.write_ptr | (txq_id << 8));
4824
4825         txq->need_update = 0;
4826
4827         return rc;
4828 }
4829
4830 #ifdef CONFIG_IWL4965_DEBUG
4831 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4832 {
4833         DECLARE_MAC_BUF(mac);
4834
4835         IWL_DEBUG_RADIO("RX CONFIG:\n");
4836         iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4837         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4838         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4839         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4840                         le32_to_cpu(rxon->filter_flags));
4841         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4842         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4843                         rxon->ofdm_basic_rates);
4844         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4845         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4846                         print_mac(mac, rxon->node_addr));
4847         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4848                         print_mac(mac, rxon->bssid_addr));
4849         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4850 }
4851 #endif
4852
4853 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4854 {
4855         IWL_DEBUG_ISR("Enabling interrupts\n");
4856         set_bit(STATUS_INT_ENABLED, &priv->status);
4857         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4858 }
4859
4860 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4861 {
4862         clear_bit(STATUS_INT_ENABLED, &priv->status);
4863
4864         /* disable interrupts from uCode/NIC to host */
4865         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4866
4867         /* acknowledge/clear/reset any interrupts still pending
4868          * from uCode or flow handler (Rx/Tx DMA) */
4869         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4870         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4871         IWL_DEBUG_ISR("Disabled interrupts\n");
4872 }
4873
4874 static const char *desc_lookup(int i)
4875 {
4876         switch (i) {
4877         case 1:
4878                 return "FAIL";
4879         case 2:
4880                 return "BAD_PARAM";
4881         case 3:
4882                 return "BAD_CHECKSUM";
4883         case 4:
4884                 return "NMI_INTERRUPT";
4885         case 5:
4886                 return "SYSASSERT";
4887         case 6:
4888                 return "FATAL_ERROR";
4889         }
4890
4891         return "UNKNOWN";
4892 }
4893
4894 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4895 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4896
4897 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4898 {
4899         u32 data2, line;
4900         u32 desc, time, count, base, data1;
4901         u32 blink1, blink2, ilink1, ilink2;
4902         int rc;
4903
4904         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4905
4906         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4907                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4908                 return;
4909         }
4910
4911         rc = iwl4965_grab_nic_access(priv);
4912         if (rc) {
4913                 IWL_WARNING("Can not read from adapter at this time.\n");
4914                 return;
4915         }
4916
4917         count = iwl4965_read_targ_mem(priv, base);
4918
4919         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4920                 IWL_ERROR("Start IWL Error Log Dump:\n");
4921                 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4922                           priv->status, priv->config, count);
4923         }
4924
4925         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4926         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4927         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4928         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4929         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4930         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4931         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4932         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4933         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4934
4935         IWL_ERROR("Desc               Time       "
4936                   "data1      data2      line\n");
4937         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4938                   desc_lookup(desc), desc, time, data1, data2, line);
4939         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4940         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4941                   ilink1, ilink2);
4942
4943         iwl4965_release_nic_access(priv);
4944 }
4945
4946 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4947
4948 /**
4949  * iwl4965_print_event_log - Dump error event log to syslog
4950  *
4951  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4952  */
4953 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4954                                 u32 num_events, u32 mode)
4955 {
4956         u32 i;
4957         u32 base;       /* SRAM byte address of event log header */
4958         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4959         u32 ptr;        /* SRAM byte address of log data */
4960         u32 ev, time, data; /* event log data */
4961
4962         if (num_events == 0)
4963                 return;
4964
4965         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4966
4967         if (mode == 0)
4968                 event_size = 2 * sizeof(u32);
4969         else
4970                 event_size = 3 * sizeof(u32);
4971
4972         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4973
4974         /* "time" is actually "data" for mode 0 (no timestamp).
4975          * place event id # at far right for easier visual parsing. */
4976         for (i = 0; i < num_events; i++) {
4977                 ev = iwl4965_read_targ_mem(priv, ptr);
4978                 ptr += sizeof(u32);
4979                 time = iwl4965_read_targ_mem(priv, ptr);
4980                 ptr += sizeof(u32);
4981                 if (mode == 0)
4982                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4983                 else {
4984                         data = iwl4965_read_targ_mem(priv, ptr);
4985                         ptr += sizeof(u32);
4986                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4987                 }
4988         }
4989 }
4990
4991 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4992 {
4993         int rc;
4994         u32 base;       /* SRAM byte address of event log header */
4995         u32 capacity;   /* event log capacity in # entries */
4996         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4997         u32 num_wraps;  /* # times uCode wrapped to top of log */
4998         u32 next_entry; /* index of next entry to be written by uCode */
4999         u32 size;       /* # entries that we'll print */
5000
5001         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
5002         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
5003                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
5004                 return;
5005         }
5006
5007         rc = iwl4965_grab_nic_access(priv);
5008         if (rc) {
5009                 IWL_WARNING("Can not read from adapter at this time.\n");
5010                 return;
5011         }
5012
5013         /* event log header */
5014         capacity = iwl4965_read_targ_mem(priv, base);
5015         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
5016         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
5017         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
5018
5019         size = num_wraps ? capacity : next_entry;
5020
5021         /* bail out if nothing in log */
5022         if (size == 0) {
5023                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
5024                 iwl4965_release_nic_access(priv);
5025                 return;
5026         }
5027
5028         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
5029                   size, num_wraps);
5030
5031         /* if uCode has wrapped back to top of log, start at the oldest entry,
5032          * i.e the next one that uCode would fill. */
5033         if (num_wraps)
5034                 iwl4965_print_event_log(priv, next_entry,
5035                                     capacity - next_entry, mode);
5036
5037         /* (then/else) start at top of log */
5038         iwl4965_print_event_log(priv, 0, next_entry, mode);
5039
5040         iwl4965_release_nic_access(priv);
5041 }
5042
5043 /**
5044  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
5045  */
5046 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
5047 {
5048         /* Set the FW error flag -- cleared on iwl4965_down */
5049         set_bit(STATUS_FW_ERROR, &priv->status);
5050
5051         /* Cancel currently queued command. */
5052         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
5053
5054 #ifdef CONFIG_IWL4965_DEBUG
5055         if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
5056                 iwl4965_dump_nic_error_log(priv);
5057                 iwl4965_dump_nic_event_log(priv);
5058                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
5059         }
5060 #endif
5061
5062         wake_up_interruptible(&priv->wait_command_queue);
5063
5064         /* Keep the restart process from trying to send host
5065          * commands by clearing the INIT status bit */
5066         clear_bit(STATUS_READY, &priv->status);
5067
5068         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5069                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
5070                           "Restarting adapter due to uCode error.\n");
5071
5072                 if (iwl4965_is_associated(priv)) {
5073                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
5074                                sizeof(priv->recovery_rxon));
5075                         priv->error_recovering = 1;
5076                 }
5077                 queue_work(priv->workqueue, &priv->restart);
5078         }
5079 }
5080
5081 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
5082 {
5083         unsigned long flags;
5084
5085         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
5086                sizeof(priv->staging_rxon));
5087         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5088         iwl4965_commit_rxon(priv);
5089
5090         iwl4965_rxon_add_station(priv, priv->bssid, 1);
5091
5092         spin_lock_irqsave(&priv->lock, flags);
5093         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
5094         priv->error_recovering = 0;
5095         spin_unlock_irqrestore(&priv->lock, flags);
5096 }
5097
5098 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
5099 {
5100         u32 inta, handled = 0;
5101         u32 inta_fh;
5102         unsigned long flags;
5103 #ifdef CONFIG_IWL4965_DEBUG
5104         u32 inta_mask;
5105 #endif
5106
5107         spin_lock_irqsave(&priv->lock, flags);
5108
5109         /* Ack/clear/reset pending uCode interrupts.
5110          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
5111          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
5112         inta = iwl4965_read32(priv, CSR_INT);
5113         iwl4965_write32(priv, CSR_INT, inta);
5114
5115         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
5116          * Any new interrupts that happen after this, either while we're
5117          * in this tasklet, or later, will show up in next ISR/tasklet. */
5118         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5119         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5120
5121 #ifdef CONFIG_IWL4965_DEBUG
5122         if (iwl4965_debug_level & IWL_DL_ISR) {
5123                 /* just for debug */
5124                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5125                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5126                               inta, inta_mask, inta_fh);
5127         }
5128 #endif
5129
5130         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5131          * atomic, make sure that inta covers all the interrupts that
5132          * we've discovered, even if FH interrupt came in just after
5133          * reading CSR_INT. */
5134         if (inta_fh & CSR_FH_INT_RX_MASK)
5135                 inta |= CSR_INT_BIT_FH_RX;
5136         if (inta_fh & CSR_FH_INT_TX_MASK)
5137                 inta |= CSR_INT_BIT_FH_TX;
5138
5139         /* Now service all interrupt bits discovered above. */
5140         if (inta & CSR_INT_BIT_HW_ERR) {
5141                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
5142
5143                 /* Tell the device to stop sending interrupts */
5144                 iwl4965_disable_interrupts(priv);
5145
5146                 iwl4965_irq_handle_error(priv);
5147
5148                 handled |= CSR_INT_BIT_HW_ERR;
5149
5150                 spin_unlock_irqrestore(&priv->lock, flags);
5151
5152                 return;
5153         }
5154
5155 #ifdef CONFIG_IWL4965_DEBUG
5156         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5157                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5158                 if (inta & CSR_INT_BIT_SCD)
5159                         IWL_DEBUG_ISR("Scheduler finished to transmit "
5160                                       "the frame/frames.\n");
5161
5162                 /* Alive notification via Rx interrupt will do the real work */
5163                 if (inta & CSR_INT_BIT_ALIVE)
5164                         IWL_DEBUG_ISR("Alive interrupt\n");
5165         }
5166 #endif
5167         /* Safely ignore these bits for debug checks below */
5168         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
5169
5170         /* HW RF KILL switch toggled */
5171         if (inta & CSR_INT_BIT_RF_KILL) {
5172                 int hw_rf_kill = 0;
5173                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5174                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5175                         hw_rf_kill = 1;
5176
5177                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5178                                 "RF_KILL bit toggled to %s.\n",
5179                                 hw_rf_kill ? "disable radio":"enable radio");
5180
5181                 /* Queue restart only if RF_KILL switch was set to "kill"
5182                  *   when we loaded driver, and is now set to "enable".
5183                  * After we're Alive, RF_KILL gets handled by
5184                  *   iwl_rx_card_state_notif() */
5185                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5186                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
5187                         queue_work(priv->workqueue, &priv->restart);
5188                 }
5189
5190                 handled |= CSR_INT_BIT_RF_KILL;
5191         }
5192
5193         /* Chip got too hot and stopped itself */
5194         if (inta & CSR_INT_BIT_CT_KILL) {
5195                 IWL_ERROR("Microcode CT kill error detected.\n");
5196                 handled |= CSR_INT_BIT_CT_KILL;
5197         }
5198
5199         /* Error detected by uCode */
5200         if (inta & CSR_INT_BIT_SW_ERR) {
5201                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
5202                           inta);
5203                 iwl4965_irq_handle_error(priv);
5204                 handled |= CSR_INT_BIT_SW_ERR;
5205         }
5206
5207         /* uCode wakes up after power-down sleep */
5208         if (inta & CSR_INT_BIT_WAKEUP) {
5209                 IWL_DEBUG_ISR("Wakeup interrupt\n");
5210                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5211                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5212                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5213                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5214                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5215                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5216                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5217
5218                 handled |= CSR_INT_BIT_WAKEUP;
5219         }
5220
5221         /* All uCode command responses, including Tx command responses,
5222          * Rx "responses" (frame-received notification), and other
5223          * notifications from uCode come through here*/
5224         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5225                 iwl4965_rx_handle(priv);
5226                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5227         }
5228
5229         if (inta & CSR_INT_BIT_FH_TX) {
5230                 IWL_DEBUG_ISR("Tx interrupt\n");
5231                 handled |= CSR_INT_BIT_FH_TX;
5232         }
5233
5234         if (inta & ~handled)
5235                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5236
5237         if (inta & ~CSR_INI_SET_MASK) {
5238                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5239                          inta & ~CSR_INI_SET_MASK);
5240                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
5241         }
5242
5243         /* Re-enable all interrupts */
5244         iwl4965_enable_interrupts(priv);
5245
5246 #ifdef CONFIG_IWL4965_DEBUG
5247         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5248                 inta = iwl4965_read32(priv, CSR_INT);
5249                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5250                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5251                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5252                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5253         }
5254 #endif
5255         spin_unlock_irqrestore(&priv->lock, flags);
5256 }
5257
5258 static irqreturn_t iwl4965_isr(int irq, void *data)
5259 {
5260         struct iwl4965_priv *priv = data;
5261         u32 inta, inta_mask;
5262         u32 inta_fh;
5263         if (!priv)
5264                 return IRQ_NONE;
5265
5266         spin_lock(&priv->lock);
5267
5268         /* Disable (but don't clear!) interrupts here to avoid
5269          *    back-to-back ISRs and sporadic interrupts from our NIC.
5270          * If we have something to service, the tasklet will re-enable ints.
5271          * If we *don't* have something, we'll re-enable before leaving here. */
5272         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
5273         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5274
5275         /* Discover which interrupts are active/pending */
5276         inta = iwl4965_read32(priv, CSR_INT);
5277         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5278
5279         /* Ignore interrupt if there's nothing in NIC to service.
5280          * This may be due to IRQ shared with another device,
5281          * or due to sporadic interrupts thrown from our NIC. */
5282         if (!inta && !inta_fh) {
5283                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5284                 goto none;
5285         }
5286
5287         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5288                 /* Hardware disappeared. It might have already raised
5289                  * an interrupt */
5290                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5291                 goto unplugged;
5292         }
5293
5294         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5295                       inta, inta_mask, inta_fh);
5296
5297         inta &= ~CSR_INT_BIT_SCD;
5298
5299         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5300         if (likely(inta || inta_fh))
5301                 tasklet_schedule(&priv->irq_tasklet);
5302
5303  unplugged:
5304         spin_unlock(&priv->lock);
5305         return IRQ_HANDLED;
5306
5307  none:
5308         /* re-enable interrupts here since we don't have anything to service. */
5309         iwl4965_enable_interrupts(priv);
5310         spin_unlock(&priv->lock);
5311         return IRQ_NONE;
5312 }
5313
5314 /************************** EEPROM BANDS ****************************
5315  *
5316  * The iwl4965_eeprom_band definitions below provide the mapping from the
5317  * EEPROM contents to the specific channel number supported for each
5318  * band.
5319  *
5320  * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5321  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5322  * The specific geography and calibration information for that channel
5323  * is contained in the eeprom map itself.
5324  *
5325  * During init, we copy the eeprom information and channel map
5326  * information into priv->channel_info_24/52 and priv->channel_map_24/52
5327  *
5328  * channel_map_24/52 provides the index in the channel_info array for a
5329  * given channel.  We have to have two separate maps as there is channel
5330  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5331  * band_2
5332  *
5333  * A value of 0xff stored in the channel_map indicates that the channel
5334  * is not supported by the hardware at all.
5335  *
5336  * A value of 0xfe in the channel_map indicates that the channel is not
5337  * valid for Tx with the current hardware.  This means that
5338  * while the system can tune and receive on a given channel, it may not
5339  * be able to associate or transmit any frames on that
5340  * channel.  There is no corresponding channel information for that
5341  * entry.
5342  *
5343  *********************************************************************/
5344
5345 /* 2.4 GHz */
5346 static const u8 iwl4965_eeprom_band_1[14] = {
5347         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5348 };
5349
5350 /* 5.2 GHz bands */
5351 static const u8 iwl4965_eeprom_band_2[] = {     /* 4915-5080MHz */
5352         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5353 };
5354
5355 static const u8 iwl4965_eeprom_band_3[] = {     /* 5170-5320MHz */
5356         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5357 };
5358
5359 static const u8 iwl4965_eeprom_band_4[] = {     /* 5500-5700MHz */
5360         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5361 };
5362
5363 static const u8 iwl4965_eeprom_band_5[] = {     /* 5725-5825MHz */
5364         145, 149, 153, 157, 161, 165
5365 };
5366
5367 static u8 iwl4965_eeprom_band_6[] = {       /* 2.4 FAT channel */
5368         1, 2, 3, 4, 5, 6, 7
5369 };
5370
5371 static u8 iwl4965_eeprom_band_7[] = {       /* 5.2 FAT channel */
5372         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5373 };
5374
5375 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5376                                     int band,
5377                                     int *eeprom_ch_count,
5378                                     const struct iwl4965_eeprom_channel
5379                                     **eeprom_ch_info,
5380                                     const u8 **eeprom_ch_index)
5381 {
5382         switch (band) {
5383         case 1:         /* 2.4GHz band */
5384                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5385                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5386                 *eeprom_ch_index = iwl4965_eeprom_band_1;
5387                 break;
5388         case 2:         /* 4.9GHz band */
5389                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5390                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5391                 *eeprom_ch_index = iwl4965_eeprom_band_2;
5392                 break;
5393         case 3:         /* 5.2GHz band */
5394                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5395                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5396                 *eeprom_ch_index = iwl4965_eeprom_band_3;
5397                 break;
5398         case 4:         /* 5.5GHz band */
5399                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5400                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5401                 *eeprom_ch_index = iwl4965_eeprom_band_4;
5402                 break;
5403         case 5:         /* 5.7GHz band */
5404                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5405                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5406                 *eeprom_ch_index = iwl4965_eeprom_band_5;
5407                 break;
5408         case 6:         /* 2.4GHz FAT channels */
5409                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5410                 *eeprom_ch_info = priv->eeprom.band_24_channels;
5411                 *eeprom_ch_index = iwl4965_eeprom_band_6;
5412                 break;
5413         case 7:         /* 5 GHz FAT channels */
5414                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5415                 *eeprom_ch_info = priv->eeprom.band_52_channels;
5416                 *eeprom_ch_index = iwl4965_eeprom_band_7;
5417                 break;
5418         default:
5419                 BUG();
5420                 return;
5421         }
5422 }
5423
5424 /**
5425  * iwl4965_get_channel_info - Find driver's private channel info
5426  *
5427  * Based on band and channel number.
5428  */
5429 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5430                                                     int phymode, u16 channel)
5431 {
5432         int i;
5433
5434         switch (phymode) {
5435         case MODE_IEEE80211A:
5436                 for (i = 14; i < priv->channel_count; i++) {
5437                         if (priv->channel_info[i].channel == channel)
5438                                 return &priv->channel_info[i];
5439                 }
5440                 break;
5441
5442         case MODE_IEEE80211B:
5443         case MODE_IEEE80211G:
5444                 if (channel >= 1 && channel <= 14)
5445                         return &priv->channel_info[channel - 1];
5446                 break;
5447
5448         }
5449
5450         return NULL;
5451 }
5452
5453 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5454                             ? # x " " : "")
5455
5456 /**
5457  * iwl4965_init_channel_map - Set up driver's info for all possible channels
5458  */
5459 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5460 {
5461         int eeprom_ch_count = 0;
5462         const u8 *eeprom_ch_index = NULL;
5463         const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5464         int band, ch;
5465         struct iwl4965_channel_info *ch_info;
5466
5467         if (priv->channel_count) {
5468                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5469                 return 0;
5470         }
5471
5472         if (priv->eeprom.version < 0x2f) {
5473                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5474                             priv->eeprom.version);
5475                 return -EINVAL;
5476         }
5477
5478         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5479
5480         priv->channel_count =
5481             ARRAY_SIZE(iwl4965_eeprom_band_1) +
5482             ARRAY_SIZE(iwl4965_eeprom_band_2) +
5483             ARRAY_SIZE(iwl4965_eeprom_band_3) +
5484             ARRAY_SIZE(iwl4965_eeprom_band_4) +
5485             ARRAY_SIZE(iwl4965_eeprom_band_5);
5486
5487         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5488
5489         priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5490                                      priv->channel_count, GFP_KERNEL);
5491         if (!priv->channel_info) {
5492                 IWL_ERROR("Could not allocate channel_info\n");
5493                 priv->channel_count = 0;
5494                 return -ENOMEM;
5495         }
5496
5497         ch_info = priv->channel_info;
5498
5499         /* Loop through the 5 EEPROM bands adding them in order to the
5500          * channel map we maintain (that contains additional information than
5501          * what just in the EEPROM) */
5502         for (band = 1; band <= 5; band++) {
5503
5504                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5505                                         &eeprom_ch_info, &eeprom_ch_index);
5506
5507                 /* Loop through each band adding each of the channels */
5508                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5509                         ch_info->channel = eeprom_ch_index[ch];
5510                         ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5511                             MODE_IEEE80211A;
5512
5513                         /* permanently store EEPROM's channel regulatory flags
5514                          *   and max power in channel info database. */
5515                         ch_info->eeprom = eeprom_ch_info[ch];
5516
5517                         /* Copy the run-time flags so they are there even on
5518                          * invalid channels */
5519                         ch_info->flags = eeprom_ch_info[ch].flags;
5520
5521                         if (!(is_channel_valid(ch_info))) {
5522                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5523                                                "No traffic\n",
5524                                                ch_info->channel,
5525                                                ch_info->flags,
5526                                                is_channel_a_band(ch_info) ?
5527                                                "5.2" : "2.4");
5528                                 ch_info++;
5529                                 continue;
5530                         }
5531
5532                         /* Initialize regulatory-based run-time data */
5533                         ch_info->max_power_avg = ch_info->curr_txpow =
5534                             eeprom_ch_info[ch].max_power_avg;
5535                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5536                         ch_info->min_power = 0;
5537
5538                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5539                                        " %ddBm): Ad-Hoc %ssupported\n",
5540                                        ch_info->channel,
5541                                        is_channel_a_band(ch_info) ?
5542                                        "5.2" : "2.4",
5543                                        CHECK_AND_PRINT(IBSS),
5544                                        CHECK_AND_PRINT(ACTIVE),
5545                                        CHECK_AND_PRINT(RADAR),
5546                                        CHECK_AND_PRINT(WIDE),
5547                                        CHECK_AND_PRINT(NARROW),
5548                                        CHECK_AND_PRINT(DFS),
5549                                        eeprom_ch_info[ch].flags,
5550                                        eeprom_ch_info[ch].max_power_avg,
5551                                        ((eeprom_ch_info[ch].
5552                                          flags & EEPROM_CHANNEL_IBSS)
5553                                         && !(eeprom_ch_info[ch].
5554                                              flags & EEPROM_CHANNEL_RADAR))
5555                                        ? "" : "not ");
5556
5557                         /* Set the user_txpower_limit to the highest power
5558                          * supported by any channel */
5559                         if (eeprom_ch_info[ch].max_power_avg >
5560                             priv->user_txpower_limit)
5561                                 priv->user_txpower_limit =
5562                                     eeprom_ch_info[ch].max_power_avg;
5563
5564                         ch_info++;
5565                 }
5566         }
5567
5568         /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5569         for (band = 6; band <= 7; band++) {
5570                 int phymode;
5571                 u8 fat_extension_chan;
5572
5573                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5574                                         &eeprom_ch_info, &eeprom_ch_index);
5575
5576                 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5577                 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5578
5579                 /* Loop through each band adding each of the channels */
5580                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5581
5582                         if ((band == 6) &&
5583                             ((eeprom_ch_index[ch] == 5) ||
5584                             (eeprom_ch_index[ch] == 6) ||
5585                             (eeprom_ch_index[ch] == 7)))
5586                                fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5587                         else
5588                                 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5589
5590                         /* Set up driver's info for lower half */
5591                         iwl4965_set_fat_chan_info(priv, phymode,
5592                                                   eeprom_ch_index[ch],
5593                                                   &(eeprom_ch_info[ch]),
5594                                                   fat_extension_chan);
5595
5596                         /* Set up driver's info for upper half */
5597                         iwl4965_set_fat_chan_info(priv, phymode,
5598                                                   (eeprom_ch_index[ch] + 4),
5599                                                   &(eeprom_ch_info[ch]),
5600                                                   HT_IE_EXT_CHANNEL_BELOW);
5601                 }
5602         }
5603
5604         return 0;
5605 }
5606
5607 /*
5608  * iwl4965_free_channel_map - undo allocations in iwl4965_init_channel_map
5609  */
5610 static void iwl4965_free_channel_map(struct iwl4965_priv *priv)
5611 {
5612         kfree(priv->channel_info);
5613         priv->channel_count = 0;
5614 }
5615
5616 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5617  * sending probe req.  This should be set long enough to hear probe responses
5618  * from more than one AP.  */
5619 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5620 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5621
5622 /* For faster active scanning, scan will move to the next channel if fewer than
5623  * PLCP_QUIET_THRESH packets are heard on this channel within
5624  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5625  * time if it's a quiet channel (nothing responded to our probe, and there's
5626  * no other traffic).
5627  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5628 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5629 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5630
5631 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5632  * Must be set longer than active dwell time.
5633  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5634 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5635 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5636 #define IWL_PASSIVE_DWELL_BASE      (100)
5637 #define IWL_CHANNEL_TUNE_TIME       5
5638
5639 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv, int phymode)
5640 {
5641         if (phymode == MODE_IEEE80211A)
5642                 return IWL_ACTIVE_DWELL_TIME_52;
5643         else
5644                 return IWL_ACTIVE_DWELL_TIME_24;
5645 }
5646
5647 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv, int phymode)
5648 {
5649         u16 active = iwl4965_get_active_dwell_time(priv, phymode);
5650         u16 passive = (phymode != MODE_IEEE80211A) ?
5651             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5652             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5653
5654         if (iwl4965_is_associated(priv)) {
5655                 /* If we're associated, we clamp the maximum passive
5656                  * dwell time to be 98% of the beacon interval (minus
5657                  * 2 * channel tune time) */
5658                 passive = priv->beacon_int;
5659                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5660                         passive = IWL_PASSIVE_DWELL_BASE;
5661                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5662         }
5663
5664         if (passive <= active)
5665                 passive = active + 1;
5666
5667         return passive;
5668 }
5669
5670 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv, int phymode,
5671                                      u8 is_active, u8 direct_mask,
5672                                      struct iwl4965_scan_channel *scan_ch)
5673 {
5674         const struct ieee80211_channel *channels = NULL;
5675         const struct ieee80211_hw_mode *hw_mode;
5676         const struct iwl4965_channel_info *ch_info;
5677         u16 passive_dwell = 0;
5678         u16 active_dwell = 0;
5679         int added, i;
5680
5681         hw_mode = iwl4965_get_hw_mode(priv, phymode);
5682         if (!hw_mode)
5683                 return 0;
5684
5685         channels = hw_mode->channels;
5686
5687         active_dwell = iwl4965_get_active_dwell_time(priv, phymode);
5688         passive_dwell = iwl4965_get_passive_dwell_time(priv, phymode);
5689
5690         for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5691                 if (channels[i].chan ==
5692                     le16_to_cpu(priv->active_rxon.channel)) {
5693                         if (iwl4965_is_associated(priv)) {
5694                                 IWL_DEBUG_SCAN
5695                                     ("Skipping current channel %d\n",
5696                                      le16_to_cpu(priv->active_rxon.channel));
5697                                 continue;
5698                         }
5699                 } else if (priv->only_active_channel)
5700                         continue;
5701
5702                 scan_ch->channel = channels[i].chan;
5703
5704                 ch_info = iwl4965_get_channel_info(priv, phymode,
5705                                          scan_ch->channel);
5706                 if (!is_channel_valid(ch_info)) {
5707                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5708                                        scan_ch->channel);
5709                         continue;
5710                 }
5711
5712                 if (!is_active || is_channel_passive(ch_info) ||
5713                     !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5714                         scan_ch->type = 0;      /* passive */
5715                 else
5716                         scan_ch->type = 1;      /* active */
5717
5718                 if (scan_ch->type & 1)
5719                         scan_ch->type |= (direct_mask << 1);
5720
5721                 if (is_channel_narrow(ch_info))
5722                         scan_ch->type |= (1 << 7);
5723
5724                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5725                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5726
5727                 /* Set txpower levels to defaults */
5728                 scan_ch->tpc.dsp_atten = 110;
5729                 /* scan_pwr_info->tpc.dsp_atten; */
5730
5731                 /*scan_pwr_info->tpc.tx_gain; */
5732                 if (phymode == MODE_IEEE80211A)
5733                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5734                 else {
5735                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5736                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5737                          * power level:
5738                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5739                          */
5740                 }
5741
5742                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5743                                scan_ch->channel,
5744                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5745                                (scan_ch->type & 1) ?
5746                                active_dwell : passive_dwell);
5747
5748                 scan_ch++;
5749                 added++;
5750         }
5751
5752         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5753         return added;
5754 }
5755
5756 static void iwl4965_reset_channel_flag(struct iwl4965_priv *priv)
5757 {
5758         int i, j;
5759         for (i = 0; i < 3; i++) {
5760                 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5761                 for (j = 0; j < hw_mode->num_channels; j++)
5762                         hw_mode->channels[j].flag = hw_mode->channels[j].val;
5763         }
5764 }
5765
5766 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5767                               struct ieee80211_rate *rates)
5768 {
5769         int i;
5770
5771         for (i = 0; i < IWL_RATE_COUNT; i++) {
5772                 rates[i].rate = iwl4965_rates[i].ieee * 5;
5773                 rates[i].val = i; /* Rate scaling will work on indexes */
5774                 rates[i].val2 = i;
5775                 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5776                 /* Only OFDM have the bits-per-symbol set */
5777                 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5778                         rates[i].flags |= IEEE80211_RATE_OFDM;
5779                 else {
5780                         /*
5781                          * If CCK 1M then set rate flag to CCK else CCK_2
5782                          * which is CCK | PREAMBLE2
5783                          */
5784                         rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5785                                 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5786                 }
5787
5788                 /* Set up which ones are basic rates... */
5789                 if (IWL_BASIC_RATES_MASK & (1 << i))
5790                         rates[i].flags |= IEEE80211_RATE_BASIC;
5791         }
5792 }
5793
5794 /**
5795  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5796  */
5797 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5798 {
5799         struct iwl4965_channel_info *ch;
5800         struct ieee80211_hw_mode *modes;
5801         struct ieee80211_channel *channels;
5802         struct ieee80211_channel *geo_ch;
5803         struct ieee80211_rate *rates;
5804         int i = 0;
5805         enum {
5806                 A = 0,
5807                 B = 1,
5808                 G = 2,
5809         };
5810         int mode_count = 3;
5811
5812         if (priv->modes) {
5813                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5814                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5815                 return 0;
5816         }
5817
5818         modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5819                         GFP_KERNEL);
5820         if (!modes)
5821                 return -ENOMEM;
5822
5823         channels = kzalloc(sizeof(struct ieee80211_channel) *
5824                            priv->channel_count, GFP_KERNEL);
5825         if (!channels) {
5826                 kfree(modes);
5827                 return -ENOMEM;
5828         }
5829
5830         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5831                         GFP_KERNEL);
5832         if (!rates) {
5833                 kfree(modes);
5834                 kfree(channels);
5835                 return -ENOMEM;
5836         }
5837
5838         /* 0 = 802.11a
5839          * 1 = 802.11b
5840          * 2 = 802.11g
5841          */
5842
5843         /* 5.2GHz channels start after the 2.4GHz channels */
5844         modes[A].mode = MODE_IEEE80211A;
5845         modes[A].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5846         modes[A].rates = rates;
5847         modes[A].num_rates = 8; /* just OFDM */
5848         modes[A].rates = &rates[4];
5849         modes[A].num_channels = 0;
5850 #ifdef CONFIG_IWL4965_HT
5851         iwl4965_init_ht_hw_capab(&modes[A].ht_info, MODE_IEEE80211A);
5852 #endif
5853
5854         modes[B].mode = MODE_IEEE80211B;
5855         modes[B].channels = channels;
5856         modes[B].rates = rates;
5857         modes[B].num_rates = 4; /* just CCK */
5858         modes[B].num_channels = 0;
5859
5860         modes[G].mode = MODE_IEEE80211G;
5861         modes[G].channels = channels;
5862         modes[G].rates = rates;
5863         modes[G].num_rates = 12;        /* OFDM & CCK */
5864         modes[G].num_channels = 0;
5865 #ifdef CONFIG_IWL4965_HT
5866         iwl4965_init_ht_hw_capab(&modes[G].ht_info, MODE_IEEE80211G);
5867 #endif
5868
5869         priv->ieee_channels = channels;
5870         priv->ieee_rates = rates;
5871
5872         iwl4965_init_hw_rates(priv, rates);
5873
5874         for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5875                 ch = &priv->channel_info[i];
5876
5877                 if (!is_channel_valid(ch)) {
5878                         IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5879                                     "skipping.\n",
5880                                     ch->channel, is_channel_a_band(ch) ?
5881                                     "5.2" : "2.4");
5882                         continue;
5883                 }
5884
5885                 if (is_channel_a_band(ch)) {
5886                         geo_ch = &modes[A].channels[modes[A].num_channels++];
5887                 } else {
5888                         geo_ch = &modes[B].channels[modes[B].num_channels++];
5889                         modes[G].num_channels++;
5890                 }
5891
5892                 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5893                 geo_ch->chan = ch->channel;
5894                 geo_ch->power_level = ch->max_power_avg;
5895                 geo_ch->antenna_max = 0xff;
5896
5897                 if (is_channel_valid(ch)) {
5898                         geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5899                         if (ch->flags & EEPROM_CHANNEL_IBSS)
5900                                 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5901
5902                         if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5903                                 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5904
5905                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5906                                 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5907
5908                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5909                                 priv->max_channel_txpower_limit =
5910                                     ch->max_power_avg;
5911                 }
5912
5913                 geo_ch->val = geo_ch->flag;
5914         }
5915
5916         if ((modes[A].num_channels == 0) && priv->is_abg) {
5917                 printk(KERN_INFO DRV_NAME
5918                        ": Incorrectly detected BG card as ABG.  Please send "
5919                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5920                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5921                 priv->is_abg = 0;
5922         }
5923
5924         printk(KERN_INFO DRV_NAME
5925                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5926                modes[G].num_channels, modes[A].num_channels);
5927
5928         /*
5929          * NOTE:  We register these in preference of order -- the
5930          * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5931          * a phymode based on rates or AP capabilities but seems to
5932          * configure it purely on if the channel being configured
5933          * is supported by a mode -- and the first match is taken
5934          */
5935
5936         if (modes[G].num_channels)
5937                 ieee80211_register_hwmode(priv->hw, &modes[G]);
5938         if (modes[B].num_channels)
5939                 ieee80211_register_hwmode(priv->hw, &modes[B]);
5940         if (modes[A].num_channels)
5941                 ieee80211_register_hwmode(priv->hw, &modes[A]);
5942
5943         priv->modes = modes;
5944         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5945
5946         return 0;
5947 }
5948
5949 /*
5950  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5951  */
5952 static void iwl4965_free_geos(struct iwl4965_priv *priv)
5953 {
5954         kfree(priv->modes);
5955         kfree(priv->ieee_channels);
5956         kfree(priv->ieee_rates);
5957         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5958 }
5959
5960 /******************************************************************************
5961  *
5962  * uCode download functions
5963  *
5964  ******************************************************************************/
5965
5966 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5967 {
5968         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5969         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5970         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5971         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5972         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5973         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5974 }
5975
5976 /**
5977  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5978  *     looking at all data.
5979  */
5980 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 *image,
5981                                  u32 len)
5982 {
5983         u32 val;
5984         u32 save_len = len;
5985         int rc = 0;
5986         u32 errcnt;
5987
5988         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5989
5990         rc = iwl4965_grab_nic_access(priv);
5991         if (rc)
5992                 return rc;
5993
5994         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5995
5996         errcnt = 0;
5997         for (; len > 0; len -= sizeof(u32), image++) {
5998                 /* read data comes through single port, auto-incr addr */
5999                 /* NOTE: Use the debugless read so we don't flood kernel log
6000                  * if IWL_DL_IO is set */
6001                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6002                 if (val != le32_to_cpu(*image)) {
6003                         IWL_ERROR("uCode INST section is invalid at "
6004                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
6005                                   save_len - len, val, le32_to_cpu(*image));
6006                         rc = -EIO;
6007                         errcnt++;
6008                         if (errcnt >= 20)
6009                                 break;
6010                 }
6011         }
6012
6013         iwl4965_release_nic_access(priv);
6014
6015         if (!errcnt)
6016                 IWL_DEBUG_INFO
6017                     ("ucode image in INSTRUCTION memory is good\n");
6018
6019         return rc;
6020 }
6021
6022
6023 /**
6024  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
6025  *   using sample data 100 bytes apart.  If these sample points are good,
6026  *   it's a pretty good bet that everything between them is good, too.
6027  */
6028 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
6029 {
6030         u32 val;
6031         int rc = 0;
6032         u32 errcnt = 0;
6033         u32 i;
6034
6035         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6036
6037         rc = iwl4965_grab_nic_access(priv);
6038         if (rc)
6039                 return rc;
6040
6041         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
6042                 /* read data comes through single port, auto-incr addr */
6043                 /* NOTE: Use the debugless read so we don't flood kernel log
6044                  * if IWL_DL_IO is set */
6045                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
6046                         i + RTC_INST_LOWER_BOUND);
6047                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6048                 if (val != le32_to_cpu(*image)) {
6049 #if 0 /* Enable this if you want to see details */
6050                         IWL_ERROR("uCode INST section is invalid at "
6051                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
6052                                   i, val, *image);
6053 #endif
6054                         rc = -EIO;
6055                         errcnt++;
6056                         if (errcnt >= 3)
6057                                 break;
6058                 }
6059         }
6060
6061         iwl4965_release_nic_access(priv);
6062
6063         return rc;
6064 }
6065
6066
6067 /**
6068  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
6069  *    and verify its contents
6070  */
6071 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
6072 {
6073         __le32 *image;
6074         u32 len;
6075         int rc = 0;
6076
6077         /* Try bootstrap */
6078         image = (__le32 *)priv->ucode_boot.v_addr;
6079         len = priv->ucode_boot.len;
6080         rc = iwl4965_verify_inst_sparse(priv, image, len);
6081         if (rc == 0) {
6082                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
6083                 return 0;
6084         }
6085
6086         /* Try initialize */
6087         image = (__le32 *)priv->ucode_init.v_addr;
6088         len = priv->ucode_init.len;
6089         rc = iwl4965_verify_inst_sparse(priv, image, len);
6090         if (rc == 0) {
6091                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
6092                 return 0;
6093         }
6094
6095         /* Try runtime/protocol */
6096         image = (__le32 *)priv->ucode_code.v_addr;
6097         len = priv->ucode_code.len;
6098         rc = iwl4965_verify_inst_sparse(priv, image, len);
6099         if (rc == 0) {
6100                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
6101                 return 0;
6102         }
6103
6104         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
6105
6106         /* Since nothing seems to match, show first several data entries in
6107          * instruction SRAM, so maybe visual inspection will give a clue.
6108          * Selection of bootstrap image (vs. other images) is arbitrary. */
6109         image = (__le32 *)priv->ucode_boot.v_addr;
6110         len = priv->ucode_boot.len;
6111         rc = iwl4965_verify_inst_full(priv, image, len);
6112
6113         return rc;
6114 }
6115
6116
6117 /* check contents of special bootstrap uCode SRAM */
6118 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
6119 {
6120         __le32 *image = priv->ucode_boot.v_addr;
6121         u32 len = priv->ucode_boot.len;
6122         u32 reg;
6123         u32 val;
6124
6125         IWL_DEBUG_INFO("Begin verify bsm\n");
6126
6127         /* verify BSM SRAM contents */
6128         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6129         for (reg = BSM_SRAM_LOWER_BOUND;
6130              reg < BSM_SRAM_LOWER_BOUND + len;
6131              reg += sizeof(u32), image ++) {
6132                 val = iwl4965_read_prph(priv, reg);
6133                 if (val != le32_to_cpu(*image)) {
6134                         IWL_ERROR("BSM uCode verification failed at "
6135                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6136                                   BSM_SRAM_LOWER_BOUND,
6137                                   reg - BSM_SRAM_LOWER_BOUND, len,
6138                                   val, le32_to_cpu(*image));
6139                         return -EIO;
6140                 }
6141         }
6142
6143         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6144
6145         return 0;
6146 }
6147
6148 /**
6149  * iwl4965_load_bsm - Load bootstrap instructions
6150  *
6151  * BSM operation:
6152  *
6153  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6154  * in special SRAM that does not power down during RFKILL.  When powering back
6155  * up after power-saving sleeps (or during initial uCode load), the BSM loads
6156  * the bootstrap program into the on-board processor, and starts it.
6157  *
6158  * The bootstrap program loads (via DMA) instructions and data for a new
6159  * program from host DRAM locations indicated by the host driver in the
6160  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
6161  * automatically.
6162  *
6163  * When initializing the NIC, the host driver points the BSM to the
6164  * "initialize" uCode image.  This uCode sets up some internal data, then
6165  * notifies host via "initialize alive" that it is complete.
6166  *
6167  * The host then replaces the BSM_DRAM_* pointer values to point to the
6168  * normal runtime uCode instructions and a backup uCode data cache buffer
6169  * (filled initially with starting data values for the on-board processor),
6170  * then triggers the "initialize" uCode to load and launch the runtime uCode,
6171  * which begins normal operation.
6172  *
6173  * When doing a power-save shutdown, runtime uCode saves data SRAM into
6174  * the backup data cache in DRAM before SRAM is powered down.
6175  *
6176  * When powering back up, the BSM loads the bootstrap program.  This reloads
6177  * the runtime uCode instructions and the backup data cache into SRAM,
6178  * and re-launches the runtime uCode from where it left off.
6179  */
6180 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6181 {
6182         __le32 *image = priv->ucode_boot.v_addr;
6183         u32 len = priv->ucode_boot.len;
6184         dma_addr_t pinst;
6185         dma_addr_t pdata;
6186         u32 inst_len;
6187         u32 data_len;
6188         int rc;
6189         int i;
6190         u32 done;
6191         u32 reg_offset;
6192
6193         IWL_DEBUG_INFO("Begin load bsm\n");
6194
6195         /* make sure bootstrap program is no larger than BSM's SRAM size */
6196         if (len > IWL_MAX_BSM_SIZE)
6197                 return -EINVAL;
6198
6199         /* Tell bootstrap uCode where to find the "Initialize" uCode
6200          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
6201          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
6202          *        after the "initialize" uCode has run, to point to
6203          *        runtime/protocol instructions and backup data cache. */
6204         pinst = priv->ucode_init.p_addr >> 4;
6205         pdata = priv->ucode_init_data.p_addr >> 4;
6206         inst_len = priv->ucode_init.len;
6207         data_len = priv->ucode_init_data.len;
6208
6209         rc = iwl4965_grab_nic_access(priv);
6210         if (rc)
6211                 return rc;
6212
6213         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6214         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6215         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6216         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6217
6218         /* Fill BSM memory with bootstrap instructions */
6219         for (reg_offset = BSM_SRAM_LOWER_BOUND;
6220              reg_offset < BSM_SRAM_LOWER_BOUND + len;
6221              reg_offset += sizeof(u32), image++)
6222                 _iwl4965_write_prph(priv, reg_offset,
6223                                           le32_to_cpu(*image));
6224
6225         rc = iwl4965_verify_bsm(priv);
6226         if (rc) {
6227                 iwl4965_release_nic_access(priv);
6228                 return rc;
6229         }
6230
6231         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6232         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6233         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6234                                  RTC_INST_LOWER_BOUND);
6235         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6236
6237         /* Load bootstrap code into instruction SRAM now,
6238          *   to prepare to load "initialize" uCode */
6239         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6240                 BSM_WR_CTRL_REG_BIT_START);
6241
6242         /* Wait for load of bootstrap uCode to finish */
6243         for (i = 0; i < 100; i++) {
6244                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6245                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6246                         break;
6247                 udelay(10);
6248         }
6249         if (i < 100)
6250                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6251         else {
6252                 IWL_ERROR("BSM write did not complete!\n");
6253                 return -EIO;
6254         }
6255
6256         /* Enable future boot loads whenever power management unit triggers it
6257          *   (e.g. when powering back up after power-save shutdown) */
6258         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6259                 BSM_WR_CTRL_REG_BIT_START_EN);
6260
6261         iwl4965_release_nic_access(priv);
6262
6263         return 0;
6264 }
6265
6266 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6267 {
6268         /* Remove all resets to allow NIC to operate */
6269         iwl4965_write32(priv, CSR_RESET, 0);
6270 }
6271
6272
6273 /**
6274  * iwl4965_read_ucode - Read uCode images from disk file.
6275  *
6276  * Copy into buffers for card to fetch via bus-mastering
6277  */
6278 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6279 {
6280         struct iwl4965_ucode *ucode;
6281         int ret;
6282         const struct firmware *ucode_raw;
6283         const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6284         u8 *src;
6285         size_t len;
6286         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6287
6288         /* Ask kernel firmware_class module to get the boot firmware off disk.
6289          * request_firmware() is synchronous, file is in memory on return. */
6290         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6291         if (ret < 0) {
6292                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6293                                         name, ret);
6294                 goto error;
6295         }
6296
6297         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6298                        name, ucode_raw->size);
6299
6300         /* Make sure that we got at least our header! */
6301         if (ucode_raw->size < sizeof(*ucode)) {
6302                 IWL_ERROR("File size way too small!\n");
6303                 ret = -EINVAL;
6304                 goto err_release;
6305         }
6306
6307         /* Data from ucode file:  header followed by uCode images */
6308         ucode = (void *)ucode_raw->data;
6309
6310         ver = le32_to_cpu(ucode->ver);
6311         inst_size = le32_to_cpu(ucode->inst_size);
6312         data_size = le32_to_cpu(ucode->data_size);
6313         init_size = le32_to_cpu(ucode->init_size);
6314         init_data_size = le32_to_cpu(ucode->init_data_size);
6315         boot_size = le32_to_cpu(ucode->boot_size);
6316
6317         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6318         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6319                        inst_size);
6320         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6321                        data_size);
6322         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6323                        init_size);
6324         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6325                        init_data_size);
6326         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6327                        boot_size);
6328
6329         /* Verify size of file vs. image size info in file's header */
6330         if (ucode_raw->size < sizeof(*ucode) +
6331                 inst_size + data_size + init_size +
6332                 init_data_size + boot_size) {
6333
6334                 IWL_DEBUG_INFO("uCode file size %d too small\n",
6335                                (int)ucode_raw->size);
6336                 ret = -EINVAL;
6337                 goto err_release;
6338         }
6339
6340         /* Verify that uCode images will fit in card's SRAM */
6341         if (inst_size > IWL_MAX_INST_SIZE) {
6342                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6343                                inst_size);
6344                 ret = -EINVAL;
6345                 goto err_release;
6346         }
6347
6348         if (data_size > IWL_MAX_DATA_SIZE) {
6349                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6350                                 data_size);
6351                 ret = -EINVAL;
6352                 goto err_release;
6353         }
6354         if (init_size > IWL_MAX_INST_SIZE) {
6355                 IWL_DEBUG_INFO
6356                     ("uCode init instr len %d too large to fit in\n",
6357                       init_size);
6358                 ret = -EINVAL;
6359                 goto err_release;
6360         }
6361         if (init_data_size > IWL_MAX_DATA_SIZE) {
6362                 IWL_DEBUG_INFO
6363                     ("uCode init data len %d too large to fit in\n",
6364                       init_data_size);
6365                 ret = -EINVAL;
6366                 goto err_release;
6367         }
6368         if (boot_size > IWL_MAX_BSM_SIZE) {
6369                 IWL_DEBUG_INFO
6370                     ("uCode boot instr len %d too large to fit in\n",
6371                       boot_size);
6372                 ret = -EINVAL;
6373                 goto err_release;
6374         }
6375
6376         /* Allocate ucode buffers for card's bus-master loading ... */
6377
6378         /* Runtime instructions and 2 copies of data:
6379          * 1) unmodified from disk
6380          * 2) backup cache for save/restore during power-downs */
6381         priv->ucode_code.len = inst_size;
6382         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6383
6384         priv->ucode_data.len = data_size;
6385         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6386
6387         priv->ucode_data_backup.len = data_size;
6388         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6389
6390         /* Initialization instructions and data */
6391         if (init_size && init_data_size) {
6392                 priv->ucode_init.len = init_size;
6393                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6394
6395                 priv->ucode_init_data.len = init_data_size;
6396                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6397
6398                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6399                         goto err_pci_alloc;
6400         }
6401
6402         /* Bootstrap (instructions only, no data) */
6403         if (boot_size) {
6404                 priv->ucode_boot.len = boot_size;
6405                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6406
6407                 if (!priv->ucode_boot.v_addr)
6408                         goto err_pci_alloc;
6409         }
6410
6411         /* Copy images into buffers for card's bus-master reads ... */
6412
6413         /* Runtime instructions (first block of data in file) */
6414         src = &ucode->data[0];
6415         len = priv->ucode_code.len;
6416         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6417         memcpy(priv->ucode_code.v_addr, src, len);
6418         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6419                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6420
6421         /* Runtime data (2nd block)
6422          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
6423         src = &ucode->data[inst_size];
6424         len = priv->ucode_data.len;
6425         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6426         memcpy(priv->ucode_data.v_addr, src, len);
6427         memcpy(priv->ucode_data_backup.v_addr, src, len);
6428
6429         /* Initialization instructions (3rd block) */
6430         if (init_size) {
6431                 src = &ucode->data[inst_size + data_size];
6432                 len = priv->ucode_init.len;
6433                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6434                                 len);
6435                 memcpy(priv->ucode_init.v_addr, src, len);
6436         }
6437
6438         /* Initialization data (4th block) */
6439         if (init_data_size) {
6440                 src = &ucode->data[inst_size + data_size + init_size];
6441                 len = priv->ucode_init_data.len;
6442                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6443                                len);
6444                 memcpy(priv->ucode_init_data.v_addr, src, len);
6445         }
6446
6447         /* Bootstrap instructions (5th block) */
6448         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6449         len = priv->ucode_boot.len;
6450         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6451         memcpy(priv->ucode_boot.v_addr, src, len);
6452
6453         /* We have our copies now, allow OS release its copies */
6454         release_firmware(ucode_raw);
6455         return 0;
6456
6457  err_pci_alloc:
6458         IWL_ERROR("failed to allocate pci memory\n");
6459         ret = -ENOMEM;
6460         iwl4965_dealloc_ucode_pci(priv);
6461
6462  err_release:
6463         release_firmware(ucode_raw);
6464
6465  error:
6466         return ret;
6467 }
6468
6469
6470 /**
6471  * iwl4965_set_ucode_ptrs - Set uCode address location
6472  *
6473  * Tell initialization uCode where to find runtime uCode.
6474  *
6475  * BSM registers initially contain pointers to initialization uCode.
6476  * We need to replace them to load runtime uCode inst and data,
6477  * and to save runtime data when powering down.
6478  */
6479 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6480 {
6481         dma_addr_t pinst;
6482         dma_addr_t pdata;
6483         int rc = 0;
6484         unsigned long flags;
6485
6486         /* bits 35:4 for 4965 */
6487         pinst = priv->ucode_code.p_addr >> 4;
6488         pdata = priv->ucode_data_backup.p_addr >> 4;
6489
6490         spin_lock_irqsave(&priv->lock, flags);
6491         rc = iwl4965_grab_nic_access(priv);
6492         if (rc) {
6493                 spin_unlock_irqrestore(&priv->lock, flags);
6494                 return rc;
6495         }
6496
6497         /* Tell bootstrap uCode where to find image to load */
6498         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6499         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6500         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6501                                  priv->ucode_data.len);
6502
6503         /* Inst bytecount must be last to set up, bit 31 signals uCode
6504          *   that all new ptr/size info is in place */
6505         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6506                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6507
6508         iwl4965_release_nic_access(priv);
6509
6510         spin_unlock_irqrestore(&priv->lock, flags);
6511
6512         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6513
6514         return rc;
6515 }
6516
6517 /**
6518  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6519  *
6520  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6521  *
6522  * The 4965 "initialize" ALIVE reply contains calibration data for:
6523  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
6524  *   (3945 does not contain this data).
6525  *
6526  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6527 */
6528 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6529 {
6530         /* Check alive response for "valid" sign from uCode */
6531         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6532                 /* We had an error bringing up the hardware, so take it
6533                  * all the way back down so we can try again */
6534                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6535                 goto restart;
6536         }
6537
6538         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6539          * This is a paranoid check, because we would not have gotten the
6540          * "initialize" alive if code weren't properly loaded.  */
6541         if (iwl4965_verify_ucode(priv)) {
6542                 /* Runtime instruction load was bad;
6543                  * take it all the way back down so we can try again */
6544                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6545                 goto restart;
6546         }
6547
6548         /* Calculate temperature */
6549         priv->temperature = iwl4965_get_temperature(priv);
6550
6551         /* Send pointers to protocol/runtime uCode image ... init code will
6552          * load and launch runtime uCode, which will send us another "Alive"
6553          * notification. */
6554         IWL_DEBUG_INFO("Initialization Alive received.\n");
6555         if (iwl4965_set_ucode_ptrs(priv)) {
6556                 /* Runtime instruction load won't happen;
6557                  * take it all the way back down so we can try again */
6558                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6559                 goto restart;
6560         }
6561         return;
6562
6563  restart:
6564         queue_work(priv->workqueue, &priv->restart);
6565 }
6566
6567
6568 /**
6569  * iwl4965_alive_start - called after REPLY_ALIVE notification received
6570  *                   from protocol/runtime uCode (initialization uCode's
6571  *                   Alive gets handled by iwl4965_init_alive_start()).
6572  */
6573 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6574 {
6575         int rc = 0;
6576
6577         IWL_DEBUG_INFO("Runtime Alive received.\n");
6578
6579         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6580                 /* We had an error bringing up the hardware, so take it
6581                  * all the way back down so we can try again */
6582                 IWL_DEBUG_INFO("Alive failed.\n");
6583                 goto restart;
6584         }
6585
6586         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6587          * This is a paranoid check, because we would not have gotten the
6588          * "runtime" alive if code weren't properly loaded.  */
6589         if (iwl4965_verify_ucode(priv)) {
6590                 /* Runtime instruction load was bad;
6591                  * take it all the way back down so we can try again */
6592                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6593                 goto restart;
6594         }
6595
6596         iwl4965_clear_stations_table(priv);
6597
6598         rc = iwl4965_alive_notify(priv);
6599         if (rc) {
6600                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6601                             rc);
6602                 goto restart;
6603         }
6604
6605         /* After the ALIVE response, we can send host commands to 4965 uCode */
6606         set_bit(STATUS_ALIVE, &priv->status);
6607
6608         /* Clear out the uCode error bit if it is set */
6609         clear_bit(STATUS_FW_ERROR, &priv->status);
6610
6611         if (iwl4965_is_rfkill(priv))
6612                 return;
6613
6614         ieee80211_start_queues(priv->hw);
6615
6616         priv->active_rate = priv->rates_mask;
6617         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6618
6619         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6620
6621         if (iwl4965_is_associated(priv)) {
6622                 struct iwl4965_rxon_cmd *active_rxon =
6623                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6624
6625                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6626                        sizeof(priv->staging_rxon));
6627                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6628         } else {
6629                 /* Initialize our rx_config data */
6630                 iwl4965_connection_init_rx_config(priv);
6631                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6632         }
6633
6634         /* Configure Bluetooth device coexistence support */
6635         iwl4965_send_bt_config(priv);
6636
6637         /* Configure the adapter for unassociated operation */
6638         iwl4965_commit_rxon(priv);
6639
6640         /* At this point, the NIC is initialized and operational */
6641         priv->notif_missed_beacons = 0;
6642         set_bit(STATUS_READY, &priv->status);
6643
6644         iwl4965_rf_kill_ct_config(priv);
6645
6646         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6647         wake_up_interruptible(&priv->wait_command_queue);
6648
6649         if (priv->error_recovering)
6650                 iwl4965_error_recovery(priv);
6651
6652         return;
6653
6654  restart:
6655         queue_work(priv->workqueue, &priv->restart);
6656 }
6657
6658 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6659
6660 static void __iwl4965_down(struct iwl4965_priv *priv)
6661 {
6662         unsigned long flags;
6663         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6664         struct ieee80211_conf *conf = NULL;
6665
6666         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6667
6668         conf = ieee80211_get_hw_conf(priv->hw);
6669
6670         if (!exit_pending)
6671                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6672
6673         iwl4965_clear_stations_table(priv);
6674
6675         /* Unblock any waiting calls */
6676         wake_up_interruptible_all(&priv->wait_command_queue);
6677
6678         /* Wipe out the EXIT_PENDING status bit if we are not actually
6679          * exiting the module */
6680         if (!exit_pending)
6681                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6682
6683         /* stop and reset the on-board processor */
6684         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6685
6686         /* tell the device to stop sending interrupts */
6687         iwl4965_disable_interrupts(priv);
6688
6689         if (priv->mac80211_registered)
6690                 ieee80211_stop_queues(priv->hw);
6691
6692         /* If we have not previously called iwl4965_init() then
6693          * clear all bits but the RF Kill and SUSPEND bits and return */
6694         if (!iwl4965_is_init(priv)) {
6695                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6696                                         STATUS_RF_KILL_HW |
6697                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6698                                         STATUS_RF_KILL_SW |
6699                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6700                                         STATUS_GEO_CONFIGURED |
6701                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6702                                         STATUS_IN_SUSPEND;
6703                 goto exit;
6704         }
6705
6706         /* ...otherwise clear out all the status bits but the RF Kill and
6707          * SUSPEND bits and continue taking the NIC down. */
6708         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6709                                 STATUS_RF_KILL_HW |
6710                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6711                                 STATUS_RF_KILL_SW |
6712                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6713                                 STATUS_GEO_CONFIGURED |
6714                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6715                                 STATUS_IN_SUSPEND |
6716                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6717                                 STATUS_FW_ERROR;
6718
6719         spin_lock_irqsave(&priv->lock, flags);
6720         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6721                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6722         spin_unlock_irqrestore(&priv->lock, flags);
6723
6724         iwl4965_hw_txq_ctx_stop(priv);
6725         iwl4965_hw_rxq_stop(priv);
6726
6727         spin_lock_irqsave(&priv->lock, flags);
6728         if (!iwl4965_grab_nic_access(priv)) {
6729                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6730                                          APMG_CLK_VAL_DMA_CLK_RQT);
6731                 iwl4965_release_nic_access(priv);
6732         }
6733         spin_unlock_irqrestore(&priv->lock, flags);
6734
6735         udelay(5);
6736
6737         iwl4965_hw_nic_stop_master(priv);
6738         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6739         iwl4965_hw_nic_reset(priv);
6740
6741  exit:
6742         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6743
6744         if (priv->ibss_beacon)
6745                 dev_kfree_skb(priv->ibss_beacon);
6746         priv->ibss_beacon = NULL;
6747
6748         /* clear out any free frames */
6749         iwl4965_clear_free_frames(priv);
6750 }
6751
6752 static void iwl4965_down(struct iwl4965_priv *priv)
6753 {
6754         mutex_lock(&priv->mutex);
6755         __iwl4965_down(priv);
6756         mutex_unlock(&priv->mutex);
6757
6758         iwl4965_cancel_deferred_work(priv);
6759 }
6760
6761 #define MAX_HW_RESTARTS 5
6762
6763 static int __iwl4965_up(struct iwl4965_priv *priv)
6764 {
6765         int rc, i;
6766
6767         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6768                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6769                 return -EIO;
6770         }
6771
6772         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6773                 IWL_WARNING("Radio disabled by SW RF kill (module "
6774                             "parameter)\n");
6775                 return -ENODEV;
6776         }
6777
6778         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6779                 IWL_ERROR("ucode not available for device bringup\n");
6780                 return -EIO;
6781         }
6782
6783         /* If platform's RF_KILL switch is NOT set to KILL */
6784         if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6785                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6786                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6787         else {
6788                 set_bit(STATUS_RF_KILL_HW, &priv->status);
6789                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6790                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6791                         return -ENODEV;
6792                 }
6793         }
6794
6795         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6796
6797         rc = iwl4965_hw_nic_init(priv);
6798         if (rc) {
6799                 IWL_ERROR("Unable to int nic\n");
6800                 return rc;
6801         }
6802
6803         /* make sure rfkill handshake bits are cleared */
6804         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6805         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6806                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6807
6808         /* clear (again), then enable host interrupts */
6809         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6810         iwl4965_enable_interrupts(priv);
6811
6812         /* really make sure rfkill handshake bits are cleared */
6813         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6814         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6815
6816         /* Copy original ucode data image from disk into backup cache.
6817          * This will be used to initialize the on-board processor's
6818          * data SRAM for a clean start when the runtime program first loads. */
6819         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6820                priv->ucode_data.len);
6821
6822         /* We return success when we resume from suspend and rf_kill is on. */
6823         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6824                 return 0;
6825
6826         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6827
6828                 iwl4965_clear_stations_table(priv);
6829
6830                 /* load bootstrap state machine,
6831                  * load bootstrap program into processor's memory,
6832                  * prepare to load the "initialize" uCode */
6833                 rc = iwl4965_load_bsm(priv);
6834
6835                 if (rc) {
6836                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6837                         continue;
6838                 }
6839
6840                 /* start card; "initialize" will load runtime ucode */
6841                 iwl4965_nic_start(priv);
6842
6843                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6844
6845                 return 0;
6846         }
6847
6848         set_bit(STATUS_EXIT_PENDING, &priv->status);
6849         __iwl4965_down(priv);
6850
6851         /* tried to restart and config the device for as long as our
6852          * patience could withstand */
6853         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6854         return -EIO;
6855 }
6856
6857
6858 /*****************************************************************************
6859  *
6860  * Workqueue callbacks
6861  *
6862  *****************************************************************************/
6863
6864 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6865 {
6866         struct iwl4965_priv *priv =
6867             container_of(data, struct iwl4965_priv, init_alive_start.work);
6868
6869         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6870                 return;
6871
6872         mutex_lock(&priv->mutex);
6873         iwl4965_init_alive_start(priv);
6874         mutex_unlock(&priv->mutex);
6875 }
6876
6877 static void iwl4965_bg_alive_start(struct work_struct *data)
6878 {
6879         struct iwl4965_priv *priv =
6880             container_of(data, struct iwl4965_priv, alive_start.work);
6881
6882         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6883                 return;
6884
6885         mutex_lock(&priv->mutex);
6886         iwl4965_alive_start(priv);
6887         mutex_unlock(&priv->mutex);
6888 }
6889
6890 static void iwl4965_bg_rf_kill(struct work_struct *work)
6891 {
6892         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6893
6894         wake_up_interruptible(&priv->wait_command_queue);
6895
6896         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6897                 return;
6898
6899         mutex_lock(&priv->mutex);
6900
6901         if (!iwl4965_is_rfkill(priv)) {
6902                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6903                           "HW and/or SW RF Kill no longer active, restarting "
6904                           "device\n");
6905                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6906                         queue_work(priv->workqueue, &priv->restart);
6907         } else {
6908
6909                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6910                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6911                                           "disabled by SW switch\n");
6912                 else
6913                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6914                                     "Kill switch must be turned off for "
6915                                     "wireless networking to work.\n");
6916         }
6917         mutex_unlock(&priv->mutex);
6918 }
6919
6920 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6921
6922 static void iwl4965_bg_scan_check(struct work_struct *data)
6923 {
6924         struct iwl4965_priv *priv =
6925             container_of(data, struct iwl4965_priv, scan_check.work);
6926
6927         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6928                 return;
6929
6930         mutex_lock(&priv->mutex);
6931         if (test_bit(STATUS_SCANNING, &priv->status) ||
6932             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6933                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6934                           "Scan completion watchdog resetting adapter (%dms)\n",
6935                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6936
6937                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6938                         iwl4965_send_scan_abort(priv);
6939         }
6940         mutex_unlock(&priv->mutex);
6941 }
6942
6943 static void iwl4965_bg_request_scan(struct work_struct *data)
6944 {
6945         struct iwl4965_priv *priv =
6946             container_of(data, struct iwl4965_priv, request_scan);
6947         struct iwl4965_host_cmd cmd = {
6948                 .id = REPLY_SCAN_CMD,
6949                 .len = sizeof(struct iwl4965_scan_cmd),
6950                 .meta.flags = CMD_SIZE_HUGE,
6951         };
6952         int rc = 0;
6953         struct iwl4965_scan_cmd *scan;
6954         struct ieee80211_conf *conf = NULL;
6955         u8 direct_mask;
6956         int phymode;
6957
6958         conf = ieee80211_get_hw_conf(priv->hw);
6959
6960         mutex_lock(&priv->mutex);
6961
6962         if (!iwl4965_is_ready(priv)) {
6963                 IWL_WARNING("request scan called when driver not ready.\n");
6964                 goto done;
6965         }
6966
6967         /* Make sure the scan wasn't cancelled before this queued work
6968          * was given the chance to run... */
6969         if (!test_bit(STATUS_SCANNING, &priv->status))
6970                 goto done;
6971
6972         /* This should never be called or scheduled if there is currently
6973          * a scan active in the hardware. */
6974         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6975                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6976                                "Ignoring second request.\n");
6977                 rc = -EIO;
6978                 goto done;
6979         }
6980
6981         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6982                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6983                 goto done;
6984         }
6985
6986         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6987                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6988                 goto done;
6989         }
6990
6991         if (iwl4965_is_rfkill(priv)) {
6992                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6993                 goto done;
6994         }
6995
6996         if (!test_bit(STATUS_READY, &priv->status)) {
6997                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6998                 goto done;
6999         }
7000
7001         if (!priv->scan_bands) {
7002                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
7003                 goto done;
7004         }
7005
7006         if (!priv->scan) {
7007                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
7008                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
7009                 if (!priv->scan) {
7010                         rc = -ENOMEM;
7011                         goto done;
7012                 }
7013         }
7014         scan = priv->scan;
7015         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
7016
7017         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
7018         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
7019
7020         if (iwl4965_is_associated(priv)) {
7021                 u16 interval = 0;
7022                 u32 extra;
7023                 u32 suspend_time = 100;
7024                 u32 scan_suspend_time = 100;
7025                 unsigned long flags;
7026
7027                 IWL_DEBUG_INFO("Scanning while associated...\n");
7028
7029                 spin_lock_irqsave(&priv->lock, flags);
7030                 interval = priv->beacon_int;
7031                 spin_unlock_irqrestore(&priv->lock, flags);
7032
7033                 scan->suspend_time = 0;
7034                 scan->max_out_time = cpu_to_le32(200 * 1024);
7035                 if (!interval)
7036                         interval = suspend_time;
7037
7038                 extra = (suspend_time / interval) << 22;
7039                 scan_suspend_time = (extra |
7040                     ((suspend_time % interval) * 1024));
7041                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
7042                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
7043                                scan_suspend_time, interval);
7044         }
7045
7046         /* We should add the ability for user to lock to PASSIVE ONLY */
7047         if (priv->one_direct_scan) {
7048                 IWL_DEBUG_SCAN
7049                     ("Kicking off one direct scan for '%s'\n",
7050                      iwl4965_escape_essid(priv->direct_ssid,
7051                                       priv->direct_ssid_len));
7052                 scan->direct_scan[0].id = WLAN_EID_SSID;
7053                 scan->direct_scan[0].len = priv->direct_ssid_len;
7054                 memcpy(scan->direct_scan[0].ssid,
7055                        priv->direct_ssid, priv->direct_ssid_len);
7056                 direct_mask = 1;
7057         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
7058                 scan->direct_scan[0].id = WLAN_EID_SSID;
7059                 scan->direct_scan[0].len = priv->essid_len;
7060                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
7061                 direct_mask = 1;
7062         } else
7063                 direct_mask = 0;
7064
7065         /* We don't build a direct scan probe request; the uCode will do
7066          * that based on the direct_mask added to each channel entry */
7067         scan->tx_cmd.len = cpu_to_le16(
7068                 iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
7069                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
7070         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
7071         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
7072         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
7073
7074         /* flags + rate selection */
7075
7076         scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
7077
7078         switch (priv->scan_bands) {
7079         case 2:
7080                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
7081                 scan->tx_cmd.rate_n_flags =
7082                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
7083                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7084
7085                 scan->good_CRC_th = 0;
7086                 phymode = MODE_IEEE80211G;
7087                 break;
7088
7089         case 1:
7090                 scan->tx_cmd.rate_n_flags =
7091                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7092                                 RATE_MCS_ANT_B_MSK);
7093                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7094                 phymode = MODE_IEEE80211A;
7095                 break;
7096
7097         default:
7098                 IWL_WARNING("Invalid scan band count\n");
7099                 goto done;
7100         }
7101
7102         /* select Rx chains */
7103
7104         /* Force use of chains B and C (0x6) for scan Rx.
7105          * Avoid A (0x1) because of its off-channel reception on A-band.
7106          * MIMO is not used here, but value is required to make uCode happy. */
7107         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7108                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7109                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7110                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7111
7112         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7113                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7114
7115         if (direct_mask)
7116                 IWL_DEBUG_SCAN
7117                     ("Initiating direct scan for %s.\n",
7118                      iwl4965_escape_essid(priv->essid, priv->essid_len));
7119         else
7120                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7121
7122         scan->channel_count =
7123                 iwl4965_get_channels_for_scan(
7124                         priv, phymode, 1, /* active */
7125                         direct_mask,
7126                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7127
7128         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7129             scan->channel_count * sizeof(struct iwl4965_scan_channel);
7130         cmd.data = scan;
7131         scan->len = cpu_to_le16(cmd.len);
7132
7133         set_bit(STATUS_SCAN_HW, &priv->status);
7134         rc = iwl4965_send_cmd_sync(priv, &cmd);
7135         if (rc)
7136                 goto done;
7137
7138         queue_delayed_work(priv->workqueue, &priv->scan_check,
7139                            IWL_SCAN_CHECK_WATCHDOG);
7140
7141         mutex_unlock(&priv->mutex);
7142         return;
7143
7144  done:
7145         /* inform mac80211 scan aborted */
7146         queue_work(priv->workqueue, &priv->scan_completed);
7147         mutex_unlock(&priv->mutex);
7148 }
7149
7150 static void iwl4965_bg_up(struct work_struct *data)
7151 {
7152         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7153
7154         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7155                 return;
7156
7157         mutex_lock(&priv->mutex);
7158         __iwl4965_up(priv);
7159         mutex_unlock(&priv->mutex);
7160 }
7161
7162 static void iwl4965_bg_restart(struct work_struct *data)
7163 {
7164         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7165
7166         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7167                 return;
7168
7169         iwl4965_down(priv);
7170         queue_work(priv->workqueue, &priv->up);
7171 }
7172
7173 static void iwl4965_bg_rx_replenish(struct work_struct *data)
7174 {
7175         struct iwl4965_priv *priv =
7176             container_of(data, struct iwl4965_priv, rx_replenish);
7177
7178         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7179                 return;
7180
7181         mutex_lock(&priv->mutex);
7182         iwl4965_rx_replenish(priv);
7183         mutex_unlock(&priv->mutex);
7184 }
7185
7186 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7187
7188 static void iwl4965_bg_post_associate(struct work_struct *data)
7189 {
7190         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7191                                              post_associate.work);
7192
7193         int rc = 0;
7194         struct ieee80211_conf *conf = NULL;
7195         DECLARE_MAC_BUF(mac);
7196
7197         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7198                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7199                 return;
7200         }
7201
7202         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7203                         priv->assoc_id,
7204                         print_mac(mac, priv->active_rxon.bssid_addr));
7205
7206
7207         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7208                 return;
7209
7210         mutex_lock(&priv->mutex);
7211
7212         if (!priv->vif || !priv->is_open) {
7213                 mutex_unlock(&priv->mutex);
7214                 return;
7215         }
7216         iwl4965_scan_cancel_timeout(priv, 200);
7217
7218         conf = ieee80211_get_hw_conf(priv->hw);
7219
7220         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7221         iwl4965_commit_rxon(priv);
7222
7223         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7224         iwl4965_setup_rxon_timing(priv);
7225         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7226                               sizeof(priv->rxon_timing), &priv->rxon_timing);
7227         if (rc)
7228                 IWL_WARNING("REPLY_RXON_TIMING failed - "
7229                             "Attempting to continue.\n");
7230
7231         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7232
7233 #ifdef CONFIG_IWL4965_HT
7234         if (priv->current_ht_config.is_ht)
7235                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
7236 #endif /* CONFIG_IWL4965_HT*/
7237         iwl4965_set_rxon_chain(priv);
7238         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7239
7240         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7241                         priv->assoc_id, priv->beacon_int);
7242
7243         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7244                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7245         else
7246                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7247
7248         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7249                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7250                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7251                 else
7252                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7253
7254                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7255                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7256
7257         }
7258
7259         iwl4965_commit_rxon(priv);
7260
7261         switch (priv->iw_mode) {
7262         case IEEE80211_IF_TYPE_STA:
7263                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7264                 break;
7265
7266         case IEEE80211_IF_TYPE_IBSS:
7267
7268                 /* clear out the station table */
7269                 iwl4965_clear_stations_table(priv);
7270
7271                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7272                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7273                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7274                 iwl4965_send_beacon_cmd(priv);
7275
7276                 break;
7277
7278         default:
7279                 IWL_ERROR("%s Should not be called in %d mode\n",
7280                                 __FUNCTION__, priv->iw_mode);
7281                 break;
7282         }
7283
7284         iwl4965_sequence_reset(priv);
7285
7286 #ifdef CONFIG_IWL4965_SENSITIVITY
7287         /* Enable Rx differential gain and sensitivity calibrations */
7288         iwl4965_chain_noise_reset(priv);
7289         priv->start_calib = 1;
7290 #endif /* CONFIG_IWL4965_SENSITIVITY */
7291
7292         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7293                 priv->assoc_station_added = 1;
7294
7295 #ifdef CONFIG_IWL4965_QOS
7296         iwl4965_activate_qos(priv, 0);
7297 #endif /* CONFIG_IWL4965_QOS */
7298         /* we have just associated, don't start scan too early */
7299         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7300         mutex_unlock(&priv->mutex);
7301 }
7302
7303 static void iwl4965_bg_abort_scan(struct work_struct *work)
7304 {
7305         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7306
7307         if (!iwl4965_is_ready(priv))
7308                 return;
7309
7310         mutex_lock(&priv->mutex);
7311
7312         set_bit(STATUS_SCAN_ABORTING, &priv->status);
7313         iwl4965_send_scan_abort(priv);
7314
7315         mutex_unlock(&priv->mutex);
7316 }
7317
7318 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7319
7320 static void iwl4965_bg_scan_completed(struct work_struct *work)
7321 {
7322         struct iwl4965_priv *priv =
7323             container_of(work, struct iwl4965_priv, scan_completed);
7324
7325         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7326
7327         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7328                 return;
7329
7330         if (test_bit(STATUS_CONF_PENDING, &priv->status))
7331                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
7332
7333         ieee80211_scan_completed(priv->hw);
7334
7335         /* Since setting the TXPOWER may have been deferred while
7336          * performing the scan, fire one off */
7337         mutex_lock(&priv->mutex);
7338         iwl4965_hw_reg_send_txpower(priv);
7339         mutex_unlock(&priv->mutex);
7340 }
7341
7342 /*****************************************************************************
7343  *
7344  * mac80211 entry point functions
7345  *
7346  *****************************************************************************/
7347
7348 #define UCODE_READY_TIMEOUT     (2 * HZ)
7349
7350 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7351 {
7352         struct iwl4965_priv *priv = hw->priv;
7353         int ret;
7354
7355         IWL_DEBUG_MAC80211("enter\n");
7356
7357         if (pci_enable_device(priv->pci_dev)) {
7358                 IWL_ERROR("Fail to pci_enable_device\n");
7359                 return -ENODEV;
7360         }
7361         pci_restore_state(priv->pci_dev);
7362         pci_enable_msi(priv->pci_dev);
7363
7364         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7365                           DRV_NAME, priv);
7366         if (ret) {
7367                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7368                 goto out_disable_msi;
7369         }
7370
7371         /* we should be verifying the device is ready to be opened */
7372         mutex_lock(&priv->mutex);
7373
7374         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7375         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7376          * ucode filename and max sizes are card-specific. */
7377
7378         if (!priv->ucode_code.len) {
7379                 ret = iwl4965_read_ucode(priv);
7380                 if (ret) {
7381                         IWL_ERROR("Could not read microcode: %d\n", ret);
7382                         mutex_unlock(&priv->mutex);
7383                         goto out_release_irq;
7384                 }
7385         }
7386
7387         ret = __iwl4965_up(priv);
7388
7389         mutex_unlock(&priv->mutex);
7390
7391         if (ret)
7392                 goto out_release_irq;
7393
7394         IWL_DEBUG_INFO("Start UP work done.\n");
7395
7396         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7397                 return 0;
7398
7399         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
7400          * mac80211 will not be run successfully. */
7401         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7402                         test_bit(STATUS_READY, &priv->status),
7403                         UCODE_READY_TIMEOUT);
7404         if (!ret) {
7405                 if (!test_bit(STATUS_READY, &priv->status)) {
7406                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7407                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
7408                         ret = -ETIMEDOUT;
7409                         goto out_release_irq;
7410                 }
7411         }
7412
7413         priv->is_open = 1;
7414         IWL_DEBUG_MAC80211("leave\n");
7415         return 0;
7416
7417 out_release_irq:
7418         free_irq(priv->pci_dev->irq, priv);
7419 out_disable_msi:
7420         pci_disable_msi(priv->pci_dev);
7421         pci_disable_device(priv->pci_dev);
7422         priv->is_open = 0;
7423         IWL_DEBUG_MAC80211("leave - failed\n");
7424         return ret;
7425 }
7426
7427 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7428 {
7429         struct iwl4965_priv *priv = hw->priv;
7430
7431         IWL_DEBUG_MAC80211("enter\n");
7432
7433         if (!priv->is_open) {
7434                 IWL_DEBUG_MAC80211("leave - skip\n");
7435                 return;
7436         }
7437
7438         priv->is_open = 0;
7439
7440         if (iwl4965_is_ready_rf(priv)) {
7441                 /* stop mac, cancel any scan request and clear
7442                  * RXON_FILTER_ASSOC_MSK BIT
7443                  */
7444                 mutex_lock(&priv->mutex);
7445                 iwl4965_scan_cancel_timeout(priv, 100);
7446                 cancel_delayed_work(&priv->post_associate);
7447                 mutex_unlock(&priv->mutex);
7448         }
7449
7450         iwl4965_down(priv);
7451
7452         flush_workqueue(priv->workqueue);
7453         free_irq(priv->pci_dev->irq, priv);
7454         pci_disable_msi(priv->pci_dev);
7455         pci_save_state(priv->pci_dev);
7456         pci_disable_device(priv->pci_dev);
7457
7458         IWL_DEBUG_MAC80211("leave\n");
7459 }
7460
7461 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7462                       struct ieee80211_tx_control *ctl)
7463 {
7464         struct iwl4965_priv *priv = hw->priv;
7465
7466         IWL_DEBUG_MAC80211("enter\n");
7467
7468         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7469                 IWL_DEBUG_MAC80211("leave - monitor\n");
7470                 return -1;
7471         }
7472
7473         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7474                      ctl->tx_rate);
7475
7476         if (iwl4965_tx_skb(priv, skb, ctl))
7477                 dev_kfree_skb_any(skb);
7478
7479         IWL_DEBUG_MAC80211("leave\n");
7480         return 0;
7481 }
7482
7483 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7484                                  struct ieee80211_if_init_conf *conf)
7485 {
7486         struct iwl4965_priv *priv = hw->priv;
7487         unsigned long flags;
7488         DECLARE_MAC_BUF(mac);
7489
7490         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
7491
7492         if (priv->vif) {
7493                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
7494                 return -EOPNOTSUPP;
7495         }
7496
7497         spin_lock_irqsave(&priv->lock, flags);
7498         priv->vif = conf->vif;
7499
7500         spin_unlock_irqrestore(&priv->lock, flags);
7501
7502         mutex_lock(&priv->mutex);
7503
7504         if (conf->mac_addr) {
7505                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7506                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7507         }
7508
7509         if (iwl4965_is_ready(priv))
7510                 iwl4965_set_mode(priv, conf->type);
7511
7512         mutex_unlock(&priv->mutex);
7513
7514         IWL_DEBUG_MAC80211("leave\n");
7515         return 0;
7516 }
7517
7518 /**
7519  * iwl4965_mac_config - mac80211 config callback
7520  *
7521  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7522  * be set inappropriately and the driver currently sets the hardware up to
7523  * use it whenever needed.
7524  */
7525 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7526 {
7527         struct iwl4965_priv *priv = hw->priv;
7528         const struct iwl4965_channel_info *ch_info;
7529         unsigned long flags;
7530         int ret = 0;
7531
7532         mutex_lock(&priv->mutex);
7533         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7534
7535         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7536
7537         if (!iwl4965_is_ready(priv)) {
7538                 IWL_DEBUG_MAC80211("leave - not ready\n");
7539                 ret = -EIO;
7540                 goto out;
7541         }
7542
7543         if (unlikely(!iwl4965_param_disable_hw_scan &&
7544                      test_bit(STATUS_SCANNING, &priv->status))) {
7545                 IWL_DEBUG_MAC80211("leave - scanning\n");
7546                 set_bit(STATUS_CONF_PENDING, &priv->status);
7547                 mutex_unlock(&priv->mutex);
7548                 return 0;
7549         }
7550
7551         spin_lock_irqsave(&priv->lock, flags);
7552
7553         ch_info = iwl4965_get_channel_info(priv, conf->phymode, conf->channel);
7554         if (!is_channel_valid(ch_info)) {
7555                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7556                                conf->channel, conf->phymode);
7557                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7558                 spin_unlock_irqrestore(&priv->lock, flags);
7559                 ret = -EINVAL;
7560                 goto out;
7561         }
7562
7563 #ifdef CONFIG_IWL4965_HT
7564         /* if we are switching fron ht to 2.4 clear flags
7565          * from any ht related info since 2.4 does not
7566          * support ht */
7567         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7568 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7569             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7570 #endif
7571         )
7572                 priv->staging_rxon.flags = 0;
7573 #endif /* CONFIG_IWL4965_HT */
7574
7575         iwl4965_set_rxon_channel(priv, conf->phymode, conf->channel);
7576
7577         iwl4965_set_flags_for_phymode(priv, conf->phymode);
7578
7579         /* The list of supported rates and rate mask can be different
7580          * for each phymode; since the phymode may have changed, reset
7581          * the rate mask to what mac80211 lists */
7582         iwl4965_set_rate(priv);
7583
7584         spin_unlock_irqrestore(&priv->lock, flags);
7585
7586 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7587         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7588                 iwl4965_hw_channel_switch(priv, conf->channel);
7589                 goto out;
7590         }
7591 #endif
7592
7593         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7594
7595         if (!conf->radio_enabled) {
7596                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7597                 goto out;
7598         }
7599
7600         if (iwl4965_is_rfkill(priv)) {
7601                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7602                 ret = -EIO;
7603                 goto out;
7604         }
7605
7606         iwl4965_set_rate(priv);
7607
7608         if (memcmp(&priv->active_rxon,
7609                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7610                 iwl4965_commit_rxon(priv);
7611         else
7612                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7613
7614         IWL_DEBUG_MAC80211("leave\n");
7615
7616 out:
7617         clear_bit(STATUS_CONF_PENDING, &priv->status);
7618         mutex_unlock(&priv->mutex);
7619         return ret;
7620 }
7621
7622 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7623 {
7624         int rc = 0;
7625
7626         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7627                 return;
7628
7629         /* The following should be done only at AP bring up */
7630         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7631
7632                 /* RXON - unassoc (to set timing command) */
7633                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7634                 iwl4965_commit_rxon(priv);
7635
7636                 /* RXON Timing */
7637                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7638                 iwl4965_setup_rxon_timing(priv);
7639                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7640                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7641                 if (rc)
7642                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7643                                         "Attempting to continue.\n");
7644
7645                 iwl4965_set_rxon_chain(priv);
7646
7647                 /* FIXME: what should be the assoc_id for AP? */
7648                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7649                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7650                         priv->staging_rxon.flags |=
7651                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7652                 else
7653                         priv->staging_rxon.flags &=
7654                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7655
7656                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7657                         if (priv->assoc_capability &
7658                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7659                                 priv->staging_rxon.flags |=
7660                                         RXON_FLG_SHORT_SLOT_MSK;
7661                         else
7662                                 priv->staging_rxon.flags &=
7663                                         ~RXON_FLG_SHORT_SLOT_MSK;
7664
7665                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7666                                 priv->staging_rxon.flags &=
7667                                         ~RXON_FLG_SHORT_SLOT_MSK;
7668                 }
7669                 /* restore RXON assoc */
7670                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7671                 iwl4965_commit_rxon(priv);
7672 #ifdef CONFIG_IWL4965_QOS
7673                 iwl4965_activate_qos(priv, 1);
7674 #endif
7675                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7676         }
7677         iwl4965_send_beacon_cmd(priv);
7678
7679         /* FIXME - we need to add code here to detect a totally new
7680          * configuration, reset the AP, unassoc, rxon timing, assoc,
7681          * clear sta table, add BCAST sta... */
7682 }
7683
7684 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
7685                                         struct ieee80211_vif *vif,
7686                                     struct ieee80211_if_conf *conf)
7687 {
7688         struct iwl4965_priv *priv = hw->priv;
7689         DECLARE_MAC_BUF(mac);
7690         unsigned long flags;
7691         int rc;
7692
7693         if (conf == NULL)
7694                 return -EIO;
7695
7696         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7697             (!conf->beacon || !conf->ssid_len)) {
7698                 IWL_DEBUG_MAC80211
7699                     ("Leaving in AP mode because HostAPD is not ready.\n");
7700                 return 0;
7701         }
7702
7703         if (!iwl4965_is_alive(priv))
7704                 return -EAGAIN;
7705
7706         mutex_lock(&priv->mutex);
7707
7708         if (conf->bssid)
7709                 IWL_DEBUG_MAC80211("bssid: %s\n",
7710                                    print_mac(mac, conf->bssid));
7711
7712 /*
7713  * very dubious code was here; the probe filtering flag is never set:
7714  *
7715         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7716             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7717  */
7718         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7719                 IWL_DEBUG_MAC80211("leave - scanning\n");
7720                 mutex_unlock(&priv->mutex);
7721                 return 0;
7722         }
7723
7724         if (priv->vif != vif) {
7725                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7726                 mutex_unlock(&priv->mutex);
7727                 return 0;
7728         }
7729
7730         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7731                 if (!conf->bssid) {
7732                         conf->bssid = priv->mac_addr;
7733                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7734                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7735                                            print_mac(mac, conf->bssid));
7736                 }
7737                 if (priv->ibss_beacon)
7738                         dev_kfree_skb(priv->ibss_beacon);
7739
7740                 priv->ibss_beacon = conf->beacon;
7741         }
7742
7743         if (iwl4965_is_rfkill(priv))
7744                 goto done;
7745
7746         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7747             !is_multicast_ether_addr(conf->bssid)) {
7748                 /* If there is currently a HW scan going on in the background
7749                  * then we need to cancel it else the RXON below will fail. */
7750                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7751                         IWL_WARNING("Aborted scan still in progress "
7752                                     "after 100ms\n");
7753                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7754                         mutex_unlock(&priv->mutex);
7755                         return -EAGAIN;
7756                 }
7757                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7758
7759                 /* TODO: Audit driver for usage of these members and see
7760                  * if mac80211 deprecates them (priv->bssid looks like it
7761                  * shouldn't be there, but I haven't scanned the IBSS code
7762                  * to verify) - jpk */
7763                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7764
7765                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7766                         iwl4965_config_ap(priv);
7767                 else {
7768                         rc = iwl4965_commit_rxon(priv);
7769                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7770                                 iwl4965_rxon_add_station(
7771                                         priv, priv->active_rxon.bssid_addr, 1);
7772                 }
7773
7774         } else {
7775                 iwl4965_scan_cancel_timeout(priv, 100);
7776                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7777                 iwl4965_commit_rxon(priv);
7778         }
7779
7780  done:
7781         spin_lock_irqsave(&priv->lock, flags);
7782         if (!conf->ssid_len)
7783                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7784         else
7785                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7786
7787         priv->essid_len = conf->ssid_len;
7788         spin_unlock_irqrestore(&priv->lock, flags);
7789
7790         IWL_DEBUG_MAC80211("leave\n");
7791         mutex_unlock(&priv->mutex);
7792
7793         return 0;
7794 }
7795
7796 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7797                                  unsigned int changed_flags,
7798                                  unsigned int *total_flags,
7799                                  int mc_count, struct dev_addr_list *mc_list)
7800 {
7801         /*
7802          * XXX: dummy
7803          * see also iwl4965_connection_init_rx_config
7804          */
7805         *total_flags = 0;
7806 }
7807
7808 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7809                                      struct ieee80211_if_init_conf *conf)
7810 {
7811         struct iwl4965_priv *priv = hw->priv;
7812
7813         IWL_DEBUG_MAC80211("enter\n");
7814
7815         mutex_lock(&priv->mutex);
7816
7817         if (iwl4965_is_ready_rf(priv)) {
7818                 iwl4965_scan_cancel_timeout(priv, 100);
7819                 cancel_delayed_work(&priv->post_associate);
7820                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7821                 iwl4965_commit_rxon(priv);
7822         }
7823         if (priv->vif == conf->vif) {
7824                 priv->vif = NULL;
7825                 memset(priv->bssid, 0, ETH_ALEN);
7826                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7827                 priv->essid_len = 0;
7828         }
7829         mutex_unlock(&priv->mutex);
7830
7831         IWL_DEBUG_MAC80211("leave\n");
7832
7833 }
7834
7835 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
7836                                      struct ieee80211_vif *vif,
7837                                      struct ieee80211_bss_conf *bss_conf,
7838                                      u32 changes)
7839 {
7840         struct iwl4965_priv *priv = hw->priv;
7841
7842         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
7843                 if (bss_conf->use_short_preamble)
7844                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7845                 else
7846                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7847         }
7848
7849         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
7850                 if (bss_conf->use_cts_prot && (priv->phymode != MODE_IEEE80211A))
7851                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7852                 else
7853                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7854         }
7855
7856         if (changes & BSS_CHANGED_ASSOC) {
7857                 /*
7858                  * TODO:
7859                  * do stuff instead of sniffing assoc resp
7860                  */
7861         }
7862
7863         if (iwl4965_is_associated(priv))
7864                 iwl4965_send_rxon_assoc(priv);
7865 }
7866
7867 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7868 {
7869         int rc = 0;
7870         unsigned long flags;
7871         struct iwl4965_priv *priv = hw->priv;
7872
7873         IWL_DEBUG_MAC80211("enter\n");
7874
7875         mutex_lock(&priv->mutex);
7876         spin_lock_irqsave(&priv->lock, flags);
7877
7878         if (!iwl4965_is_ready_rf(priv)) {
7879                 rc = -EIO;
7880                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7881                 goto out_unlock;
7882         }
7883
7884         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7885                 rc = -EIO;
7886                 IWL_ERROR("ERROR: APs don't scan\n");
7887                 goto out_unlock;
7888         }
7889
7890         /* we don't schedule scan within next_scan_jiffies period */
7891         if (priv->next_scan_jiffies &&
7892                         time_after(priv->next_scan_jiffies, jiffies)) {
7893                 rc = -EAGAIN;
7894                 goto out_unlock;
7895         }
7896         /* if we just finished scan ask for delay */
7897         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7898                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
7899                 rc = -EAGAIN;
7900                 goto out_unlock;
7901         }
7902         if (len) {
7903                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7904                                iwl4965_escape_essid(ssid, len), (int)len);
7905
7906                 priv->one_direct_scan = 1;
7907                 priv->direct_ssid_len = (u8)
7908                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7909                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7910         } else
7911                 priv->one_direct_scan = 0;
7912
7913         rc = iwl4965_scan_initiate(priv);
7914
7915         IWL_DEBUG_MAC80211("leave\n");
7916
7917 out_unlock:
7918         spin_unlock_irqrestore(&priv->lock, flags);
7919         mutex_unlock(&priv->mutex);
7920
7921         return rc;
7922 }
7923
7924 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7925                            const u8 *local_addr, const u8 *addr,
7926                            struct ieee80211_key_conf *key)
7927 {
7928         struct iwl4965_priv *priv = hw->priv;
7929         DECLARE_MAC_BUF(mac);
7930         int rc = 0;
7931         u8 sta_id;
7932
7933         IWL_DEBUG_MAC80211("enter\n");
7934
7935         if (!iwl4965_param_hwcrypto) {
7936                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7937                 return -EOPNOTSUPP;
7938         }
7939
7940         if (is_zero_ether_addr(addr))
7941                 /* only support pairwise keys */
7942                 return -EOPNOTSUPP;
7943
7944         sta_id = iwl4965_hw_find_station(priv, addr);
7945         if (sta_id == IWL_INVALID_STATION) {
7946                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7947                                    print_mac(mac, addr));
7948                 return -EINVAL;
7949         }
7950
7951         mutex_lock(&priv->mutex);
7952
7953         iwl4965_scan_cancel_timeout(priv, 100);
7954
7955         switch (cmd) {
7956         case  SET_KEY:
7957                 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7958                 if (!rc) {
7959                         iwl4965_set_rxon_hwcrypto(priv, 1);
7960                         iwl4965_commit_rxon(priv);
7961                         key->hw_key_idx = sta_id;
7962                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7963                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7964                 }
7965                 break;
7966         case DISABLE_KEY:
7967                 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7968                 if (!rc) {
7969                         iwl4965_set_rxon_hwcrypto(priv, 0);
7970                         iwl4965_commit_rxon(priv);
7971                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7972                 }
7973                 break;
7974         default:
7975                 rc = -EINVAL;
7976         }
7977
7978         IWL_DEBUG_MAC80211("leave\n");
7979         mutex_unlock(&priv->mutex);
7980
7981         return rc;
7982 }
7983
7984 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7985                            const struct ieee80211_tx_queue_params *params)
7986 {
7987         struct iwl4965_priv *priv = hw->priv;
7988 #ifdef CONFIG_IWL4965_QOS
7989         unsigned long flags;
7990         int q;
7991 #endif /* CONFIG_IWL4965_QOS */
7992
7993         IWL_DEBUG_MAC80211("enter\n");
7994
7995         if (!iwl4965_is_ready_rf(priv)) {
7996                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7997                 return -EIO;
7998         }
7999
8000         if (queue >= AC_NUM) {
8001                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
8002                 return 0;
8003         }
8004
8005 #ifdef CONFIG_IWL4965_QOS
8006         if (!priv->qos_data.qos_enable) {
8007                 priv->qos_data.qos_active = 0;
8008                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
8009                 return 0;
8010         }
8011         q = AC_NUM - 1 - queue;
8012
8013         spin_lock_irqsave(&priv->lock, flags);
8014
8015         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
8016         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
8017         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
8018         priv->qos_data.def_qos_parm.ac[q].edca_txop =
8019                         cpu_to_le16((params->burst_time * 100));
8020
8021         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
8022         priv->qos_data.qos_active = 1;
8023
8024         spin_unlock_irqrestore(&priv->lock, flags);
8025
8026         mutex_lock(&priv->mutex);
8027         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
8028                 iwl4965_activate_qos(priv, 1);
8029         else if (priv->assoc_id && iwl4965_is_associated(priv))
8030                 iwl4965_activate_qos(priv, 0);
8031
8032         mutex_unlock(&priv->mutex);
8033
8034 #endif /*CONFIG_IWL4965_QOS */
8035
8036         IWL_DEBUG_MAC80211("leave\n");
8037         return 0;
8038 }
8039
8040 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
8041                                 struct ieee80211_tx_queue_stats *stats)
8042 {
8043         struct iwl4965_priv *priv = hw->priv;
8044         int i, avail;
8045         struct iwl4965_tx_queue *txq;
8046         struct iwl4965_queue *q;
8047         unsigned long flags;
8048
8049         IWL_DEBUG_MAC80211("enter\n");
8050
8051         if (!iwl4965_is_ready_rf(priv)) {
8052                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8053                 return -EIO;
8054         }
8055
8056         spin_lock_irqsave(&priv->lock, flags);
8057
8058         for (i = 0; i < AC_NUM; i++) {
8059                 txq = &priv->txq[i];
8060                 q = &txq->q;
8061                 avail = iwl4965_queue_space(q);
8062
8063                 stats->data[i].len = q->n_window - avail;
8064                 stats->data[i].limit = q->n_window - q->high_mark;
8065                 stats->data[i].count = q->n_window;
8066
8067         }
8068         spin_unlock_irqrestore(&priv->lock, flags);
8069
8070         IWL_DEBUG_MAC80211("leave\n");
8071
8072         return 0;
8073 }
8074
8075 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
8076                              struct ieee80211_low_level_stats *stats)
8077 {
8078         IWL_DEBUG_MAC80211("enter\n");
8079         IWL_DEBUG_MAC80211("leave\n");
8080
8081         return 0;
8082 }
8083
8084 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
8085 {
8086         IWL_DEBUG_MAC80211("enter\n");
8087         IWL_DEBUG_MAC80211("leave\n");
8088
8089         return 0;
8090 }
8091
8092 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
8093 {
8094         struct iwl4965_priv *priv = hw->priv;
8095         unsigned long flags;
8096
8097         mutex_lock(&priv->mutex);
8098         IWL_DEBUG_MAC80211("enter\n");
8099
8100         priv->lq_mngr.lq_ready = 0;
8101 #ifdef CONFIG_IWL4965_HT
8102         spin_lock_irqsave(&priv->lock, flags);
8103         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
8104         spin_unlock_irqrestore(&priv->lock, flags);
8105 #ifdef CONFIG_IWL4965_HT_AGG
8106 /*      if (priv->lq_mngr.agg_ctrl.granted_ba)
8107                 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
8108
8109         memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl4965_agg_control));
8110         priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
8111         priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
8112         priv->lq_mngr.agg_ctrl.auto_agg = 1;
8113
8114         if (priv->lq_mngr.agg_ctrl.auto_agg)
8115                 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
8116 #endif /*CONFIG_IWL4965_HT_AGG */
8117 #endif /* CONFIG_IWL4965_HT */
8118
8119 #ifdef CONFIG_IWL4965_QOS
8120         iwl4965_reset_qos(priv);
8121 #endif
8122
8123         cancel_delayed_work(&priv->post_associate);
8124
8125         spin_lock_irqsave(&priv->lock, flags);
8126         priv->assoc_id = 0;
8127         priv->assoc_capability = 0;
8128         priv->call_post_assoc_from_beacon = 0;
8129         priv->assoc_station_added = 0;
8130
8131         /* new association get rid of ibss beacon skb */
8132         if (priv->ibss_beacon)
8133                 dev_kfree_skb(priv->ibss_beacon);
8134
8135         priv->ibss_beacon = NULL;
8136
8137         priv->beacon_int = priv->hw->conf.beacon_int;
8138         priv->timestamp1 = 0;
8139         priv->timestamp0 = 0;
8140         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
8141                 priv->beacon_int = 0;
8142
8143         spin_unlock_irqrestore(&priv->lock, flags);
8144
8145         if (!iwl4965_is_ready_rf(priv)) {
8146                 IWL_DEBUG_MAC80211("leave - not ready\n");
8147                 mutex_unlock(&priv->mutex);
8148                 return;
8149         }
8150
8151         /* we are restarting association process
8152          * clear RXON_FILTER_ASSOC_MSK bit
8153          */
8154         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
8155                 iwl4965_scan_cancel_timeout(priv, 100);
8156                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
8157                 iwl4965_commit_rxon(priv);
8158         }
8159
8160         /* Per mac80211.h: This is only used in IBSS mode... */
8161         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8162
8163                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
8164                 mutex_unlock(&priv->mutex);
8165                 return;
8166         }
8167
8168         priv->only_active_channel = 0;
8169
8170         iwl4965_set_rate(priv);
8171
8172         mutex_unlock(&priv->mutex);
8173
8174         IWL_DEBUG_MAC80211("leave\n");
8175 }
8176
8177 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
8178                                  struct ieee80211_tx_control *control)
8179 {
8180         struct iwl4965_priv *priv = hw->priv;
8181         unsigned long flags;
8182
8183         mutex_lock(&priv->mutex);
8184         IWL_DEBUG_MAC80211("enter\n");
8185
8186         if (!iwl4965_is_ready_rf(priv)) {
8187                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8188                 mutex_unlock(&priv->mutex);
8189                 return -EIO;
8190         }
8191
8192         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8193                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
8194                 mutex_unlock(&priv->mutex);
8195                 return -EIO;
8196         }
8197
8198         spin_lock_irqsave(&priv->lock, flags);
8199
8200         if (priv->ibss_beacon)
8201                 dev_kfree_skb(priv->ibss_beacon);
8202
8203         priv->ibss_beacon = skb;
8204
8205         priv->assoc_id = 0;
8206
8207         IWL_DEBUG_MAC80211("leave\n");
8208         spin_unlock_irqrestore(&priv->lock, flags);
8209
8210 #ifdef CONFIG_IWL4965_QOS
8211         iwl4965_reset_qos(priv);
8212 #endif
8213
8214         queue_work(priv->workqueue, &priv->post_associate.work);
8215
8216         mutex_unlock(&priv->mutex);
8217
8218         return 0;
8219 }
8220
8221 #ifdef CONFIG_IWL4965_HT
8222
8223 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
8224                                  struct iwl4965_priv *priv)
8225 {
8226         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
8227         struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
8228         struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
8229
8230         IWL_DEBUG_MAC80211("enter: \n");
8231
8232         if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
8233                 iwl_conf->is_ht = 0;
8234                 return;
8235         }
8236
8237         iwl_conf->is_ht = 1;
8238         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
8239
8240         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
8241                 iwl_conf->sgf |= 0x1;
8242         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
8243                 iwl_conf->sgf |= 0x2;
8244
8245         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
8246         iwl_conf->max_amsdu_size =
8247                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
8248         iwl_conf->supported_chan_width =
8249                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
8250         iwl_conf->tx_mimo_ps_mode =
8251                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
8252         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
8253
8254         iwl_conf->control_channel = ht_bss_conf->primary_channel;
8255         iwl_conf->extension_chan_offset =
8256                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
8257         iwl_conf->tx_chan_width =
8258                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
8259         iwl_conf->ht_protection =
8260                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
8261         iwl_conf->non_GF_STA_present =
8262                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
8263
8264         IWL_DEBUG_MAC80211("control channel %d\n",
8265                 iwl_conf->control_channel);
8266         IWL_DEBUG_MAC80211("leave\n");
8267 }
8268
8269 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8270                                struct ieee80211_conf *conf)
8271 {
8272         struct iwl4965_priv *priv = hw->priv;
8273
8274         IWL_DEBUG_MAC80211("enter: \n");
8275
8276         iwl4965_ht_info_fill(conf, priv);
8277         iwl4965_set_rxon_chain(priv);
8278
8279         if (priv && priv->assoc_id &&
8280             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8281                 unsigned long flags;
8282
8283                 spin_lock_irqsave(&priv->lock, flags);
8284                 if (priv->beacon_int)
8285                         queue_work(priv->workqueue, &priv->post_associate.work);
8286                 else
8287                         priv->call_post_assoc_from_beacon = 1;
8288                 spin_unlock_irqrestore(&priv->lock, flags);
8289         }
8290
8291         IWL_DEBUG_MAC80211("leave:\n");
8292         return 0;
8293 }
8294
8295 static void iwl4965_set_ht_capab(struct ieee80211_hw *hw,
8296                         struct ieee80211_ht_cap *ht_cap,
8297                         u8 use_current_config)
8298 {
8299         struct ieee80211_conf *conf = &hw->conf;
8300         struct ieee80211_hw_mode *mode = conf->mode;
8301
8302         if (use_current_config) {
8303                 ht_cap->cap_info = cpu_to_le16(conf->ht_conf.cap);
8304                 memcpy(ht_cap->supp_mcs_set,
8305                                 conf->ht_conf.supp_mcs_set, 16);
8306         } else {
8307                 ht_cap->cap_info = cpu_to_le16(mode->ht_info.cap);
8308                 memcpy(ht_cap->supp_mcs_set,
8309                                 mode->ht_info.supp_mcs_set, 16);
8310         }
8311         ht_cap->ampdu_params_info =
8312                 (mode->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
8313                 ((mode->ht_info.ampdu_density << 2) &
8314                                         IEEE80211_HT_CAP_AMPDU_DENSITY);
8315 }
8316
8317 #endif /*CONFIG_IWL4965_HT*/
8318
8319 /*****************************************************************************
8320  *
8321  * sysfs attributes
8322  *
8323  *****************************************************************************/
8324
8325 #ifdef CONFIG_IWL4965_DEBUG
8326
8327 /*
8328  * The following adds a new attribute to the sysfs representation
8329  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8330  * used for controlling the debug level.
8331  *
8332  * See the level definitions in iwl for details.
8333  */
8334
8335 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8336 {
8337         return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8338 }
8339 static ssize_t store_debug_level(struct device_driver *d,
8340                                  const char *buf, size_t count)
8341 {
8342         char *p = (char *)buf;
8343         u32 val;
8344
8345         val = simple_strtoul(p, &p, 0);
8346         if (p == buf)
8347                 printk(KERN_INFO DRV_NAME
8348                        ": %s is not in hex or decimal form.\n", buf);
8349         else
8350                 iwl4965_debug_level = val;
8351
8352         return strnlen(buf, count);
8353 }
8354
8355 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8356                    show_debug_level, store_debug_level);
8357
8358 #endif /* CONFIG_IWL4965_DEBUG */
8359
8360 static ssize_t show_rf_kill(struct device *d,
8361                             struct device_attribute *attr, char *buf)
8362 {
8363         /*
8364          * 0 - RF kill not enabled
8365          * 1 - SW based RF kill active (sysfs)
8366          * 2 - HW based RF kill active
8367          * 3 - Both HW and SW based RF kill active
8368          */
8369         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8370         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8371                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8372
8373         return sprintf(buf, "%i\n", val);
8374 }
8375
8376 static ssize_t store_rf_kill(struct device *d,
8377                              struct device_attribute *attr,
8378                              const char *buf, size_t count)
8379 {
8380         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8381
8382         mutex_lock(&priv->mutex);
8383         iwl4965_radio_kill_sw(priv, buf[0] == '1');
8384         mutex_unlock(&priv->mutex);
8385
8386         return count;
8387 }
8388
8389 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8390
8391 static ssize_t show_temperature(struct device *d,
8392                                 struct device_attribute *attr, char *buf)
8393 {
8394         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8395
8396         if (!iwl4965_is_alive(priv))
8397                 return -EAGAIN;
8398
8399         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8400 }
8401
8402 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8403
8404 static ssize_t show_rs_window(struct device *d,
8405                               struct device_attribute *attr,
8406                               char *buf)
8407 {
8408         struct iwl4965_priv *priv = d->driver_data;
8409         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8410 }
8411 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8412
8413 static ssize_t show_tx_power(struct device *d,
8414                              struct device_attribute *attr, char *buf)
8415 {
8416         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8417         return sprintf(buf, "%d\n", priv->user_txpower_limit);
8418 }
8419
8420 static ssize_t store_tx_power(struct device *d,
8421                               struct device_attribute *attr,
8422                               const char *buf, size_t count)
8423 {
8424         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8425         char *p = (char *)buf;
8426         u32 val;
8427
8428         val = simple_strtoul(p, &p, 10);
8429         if (p == buf)
8430                 printk(KERN_INFO DRV_NAME
8431                        ": %s is not in decimal form.\n", buf);
8432         else
8433                 iwl4965_hw_reg_set_txpower(priv, val);
8434
8435         return count;
8436 }
8437
8438 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8439
8440 static ssize_t show_flags(struct device *d,
8441                           struct device_attribute *attr, char *buf)
8442 {
8443         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8444
8445         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8446 }
8447
8448 static ssize_t store_flags(struct device *d,
8449                            struct device_attribute *attr,
8450                            const char *buf, size_t count)
8451 {
8452         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8453         u32 flags = simple_strtoul(buf, NULL, 0);
8454
8455         mutex_lock(&priv->mutex);
8456         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8457                 /* Cancel any currently running scans... */
8458                 if (iwl4965_scan_cancel_timeout(priv, 100))
8459                         IWL_WARNING("Could not cancel scan.\n");
8460                 else {
8461                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8462                                        flags);
8463                         priv->staging_rxon.flags = cpu_to_le32(flags);
8464                         iwl4965_commit_rxon(priv);
8465                 }
8466         }
8467         mutex_unlock(&priv->mutex);
8468
8469         return count;
8470 }
8471
8472 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8473
8474 static ssize_t show_filter_flags(struct device *d,
8475                                  struct device_attribute *attr, char *buf)
8476 {
8477         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8478
8479         return sprintf(buf, "0x%04X\n",
8480                 le32_to_cpu(priv->active_rxon.filter_flags));
8481 }
8482
8483 static ssize_t store_filter_flags(struct device *d,
8484                                   struct device_attribute *attr,
8485                                   const char *buf, size_t count)
8486 {
8487         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8488         u32 filter_flags = simple_strtoul(buf, NULL, 0);
8489
8490         mutex_lock(&priv->mutex);
8491         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8492                 /* Cancel any currently running scans... */
8493                 if (iwl4965_scan_cancel_timeout(priv, 100))
8494                         IWL_WARNING("Could not cancel scan.\n");
8495                 else {
8496                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8497                                        "0x%04X\n", filter_flags);
8498                         priv->staging_rxon.filter_flags =
8499                                 cpu_to_le32(filter_flags);
8500                         iwl4965_commit_rxon(priv);
8501                 }
8502         }
8503         mutex_unlock(&priv->mutex);
8504
8505         return count;
8506 }
8507
8508 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8509                    store_filter_flags);
8510
8511 static ssize_t show_tune(struct device *d,
8512                          struct device_attribute *attr, char *buf)
8513 {
8514         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8515
8516         return sprintf(buf, "0x%04X\n",
8517                        (priv->phymode << 8) |
8518                         le16_to_cpu(priv->active_rxon.channel));
8519 }
8520
8521 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode);
8522
8523 static ssize_t store_tune(struct device *d,
8524                           struct device_attribute *attr,
8525                           const char *buf, size_t count)
8526 {
8527         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8528         char *p = (char *)buf;
8529         u16 tune = simple_strtoul(p, &p, 0);
8530         u8 phymode = (tune >> 8) & 0xff;
8531         u16 channel = tune & 0xff;
8532
8533         IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8534
8535         mutex_lock(&priv->mutex);
8536         if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8537             (priv->phymode != phymode)) {
8538                 const struct iwl4965_channel_info *ch_info;
8539
8540                 ch_info = iwl4965_get_channel_info(priv, phymode, channel);
8541                 if (!ch_info) {
8542                         IWL_WARNING("Requested invalid phymode/channel "
8543                                     "combination: %d %d\n", phymode, channel);
8544                         mutex_unlock(&priv->mutex);
8545                         return -EINVAL;
8546                 }
8547
8548                 /* Cancel any currently running scans... */
8549                 if (iwl4965_scan_cancel_timeout(priv, 100))
8550                         IWL_WARNING("Could not cancel scan.\n");
8551                 else {
8552                         IWL_DEBUG_INFO("Committing phymode and "
8553                                        "rxon.channel = %d %d\n",
8554                                        phymode, channel);
8555
8556                         iwl4965_set_rxon_channel(priv, phymode, channel);
8557                         iwl4965_set_flags_for_phymode(priv, phymode);
8558
8559                         iwl4965_set_rate(priv);
8560                         iwl4965_commit_rxon(priv);
8561                 }
8562         }
8563         mutex_unlock(&priv->mutex);
8564
8565         return count;
8566 }
8567
8568 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8569
8570 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8571
8572 static ssize_t show_measurement(struct device *d,
8573                                 struct device_attribute *attr, char *buf)
8574 {
8575         struct iwl4965_priv *priv = dev_get_drvdata(d);
8576         struct iwl4965_spectrum_notification measure_report;
8577         u32 size = sizeof(measure_report), len = 0, ofs = 0;
8578         u8 *data = (u8 *) & measure_report;
8579         unsigned long flags;
8580
8581         spin_lock_irqsave(&priv->lock, flags);
8582         if (!(priv->measurement_status & MEASUREMENT_READY)) {
8583                 spin_unlock_irqrestore(&priv->lock, flags);
8584                 return 0;
8585         }
8586         memcpy(&measure_report, &priv->measure_report, size);
8587         priv->measurement_status = 0;
8588         spin_unlock_irqrestore(&priv->lock, flags);
8589
8590         while (size && (PAGE_SIZE - len)) {
8591                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8592                                    PAGE_SIZE - len, 1);
8593                 len = strlen(buf);
8594                 if (PAGE_SIZE - len)
8595                         buf[len++] = '\n';
8596
8597                 ofs += 16;
8598                 size -= min(size, 16U);
8599         }
8600
8601         return len;
8602 }
8603
8604 static ssize_t store_measurement(struct device *d,
8605                                  struct device_attribute *attr,
8606                                  const char *buf, size_t count)
8607 {
8608         struct iwl4965_priv *priv = dev_get_drvdata(d);
8609         struct ieee80211_measurement_params params = {
8610                 .channel = le16_to_cpu(priv->active_rxon.channel),
8611                 .start_time = cpu_to_le64(priv->last_tsf),
8612                 .duration = cpu_to_le16(1),
8613         };
8614         u8 type = IWL_MEASURE_BASIC;
8615         u8 buffer[32];
8616         u8 channel;
8617
8618         if (count) {
8619                 char *p = buffer;
8620                 strncpy(buffer, buf, min(sizeof(buffer), count));
8621                 channel = simple_strtoul(p, NULL, 0);
8622                 if (channel)
8623                         params.channel = channel;
8624
8625                 p = buffer;
8626                 while (*p && *p != ' ')
8627                         p++;
8628                 if (*p)
8629                         type = simple_strtoul(p + 1, NULL, 0);
8630         }
8631
8632         IWL_DEBUG_INFO("Invoking measurement of type %d on "
8633                        "channel %d (for '%s')\n", type, params.channel, buf);
8634         iwl4965_get_measurement(priv, &params, type);
8635
8636         return count;
8637 }
8638
8639 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8640                    show_measurement, store_measurement);
8641 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8642
8643 static ssize_t store_retry_rate(struct device *d,
8644                                 struct device_attribute *attr,
8645                                 const char *buf, size_t count)
8646 {
8647         struct iwl4965_priv *priv = dev_get_drvdata(d);
8648
8649         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8650         if (priv->retry_rate <= 0)
8651                 priv->retry_rate = 1;
8652
8653         return count;
8654 }
8655
8656 static ssize_t show_retry_rate(struct device *d,
8657                                struct device_attribute *attr, char *buf)
8658 {
8659         struct iwl4965_priv *priv = dev_get_drvdata(d);
8660         return sprintf(buf, "%d", priv->retry_rate);
8661 }
8662
8663 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8664                    store_retry_rate);
8665
8666 static ssize_t store_power_level(struct device *d,
8667                                  struct device_attribute *attr,
8668                                  const char *buf, size_t count)
8669 {
8670         struct iwl4965_priv *priv = dev_get_drvdata(d);
8671         int rc;
8672         int mode;
8673
8674         mode = simple_strtoul(buf, NULL, 0);
8675         mutex_lock(&priv->mutex);
8676
8677         if (!iwl4965_is_ready(priv)) {
8678                 rc = -EAGAIN;
8679                 goto out;
8680         }
8681
8682         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8683                 mode = IWL_POWER_AC;
8684         else
8685                 mode |= IWL_POWER_ENABLED;
8686
8687         if (mode != priv->power_mode) {
8688                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8689                 if (rc) {
8690                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8691                         goto out;
8692                 }
8693                 priv->power_mode = mode;
8694         }
8695
8696         rc = count;
8697
8698  out:
8699         mutex_unlock(&priv->mutex);
8700         return rc;
8701 }
8702
8703 #define MAX_WX_STRING 80
8704
8705 /* Values are in microsecond */
8706 static const s32 timeout_duration[] = {
8707         350000,
8708         250000,
8709         75000,
8710         37000,
8711         25000,
8712 };
8713 static const s32 period_duration[] = {
8714         400000,
8715         700000,
8716         1000000,
8717         1000000,
8718         1000000
8719 };
8720
8721 static ssize_t show_power_level(struct device *d,
8722                                 struct device_attribute *attr, char *buf)
8723 {
8724         struct iwl4965_priv *priv = dev_get_drvdata(d);
8725         int level = IWL_POWER_LEVEL(priv->power_mode);
8726         char *p = buf;
8727
8728         p += sprintf(p, "%d ", level);
8729         switch (level) {
8730         case IWL_POWER_MODE_CAM:
8731         case IWL_POWER_AC:
8732                 p += sprintf(p, "(AC)");
8733                 break;
8734         case IWL_POWER_BATTERY:
8735                 p += sprintf(p, "(BATTERY)");
8736                 break;
8737         default:
8738                 p += sprintf(p,
8739                              "(Timeout %dms, Period %dms)",
8740                              timeout_duration[level - 1] / 1000,
8741                              period_duration[level - 1] / 1000);
8742         }
8743
8744         if (!(priv->power_mode & IWL_POWER_ENABLED))
8745                 p += sprintf(p, " OFF\n");
8746         else
8747                 p += sprintf(p, " \n");
8748
8749         return (p - buf + 1);
8750
8751 }
8752
8753 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8754                    store_power_level);
8755
8756 static ssize_t show_channels(struct device *d,
8757                              struct device_attribute *attr, char *buf)
8758 {
8759         struct iwl4965_priv *priv = dev_get_drvdata(d);
8760         int len = 0, i;
8761         struct ieee80211_channel *channels = NULL;
8762         const struct ieee80211_hw_mode *hw_mode = NULL;
8763         int count = 0;
8764
8765         if (!iwl4965_is_ready(priv))
8766                 return -EAGAIN;
8767
8768         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211G);
8769         if (!hw_mode)
8770                 hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211B);
8771         if (hw_mode) {
8772                 channels = hw_mode->channels;
8773                 count = hw_mode->num_channels;
8774         }
8775
8776         len +=
8777             sprintf(&buf[len],
8778                     "Displaying %d channels in 2.4GHz band "
8779                     "(802.11bg):\n", count);
8780
8781         for (i = 0; i < count; i++)
8782                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8783                                channels[i].chan,
8784                                channels[i].power_level,
8785                                channels[i].
8786                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8787                                " (IEEE 802.11h required)" : "",
8788                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8789                                 || (channels[i].
8790                                     flag &
8791                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8792                                ", IBSS",
8793                                channels[i].
8794                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8795                                "active/passive" : "passive only");
8796
8797         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211A);
8798         if (hw_mode) {
8799                 channels = hw_mode->channels;
8800                 count = hw_mode->num_channels;
8801         } else {
8802                 channels = NULL;
8803                 count = 0;
8804         }
8805
8806         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8807                        "(802.11a):\n", count);
8808
8809         for (i = 0; i < count; i++)
8810                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8811                                channels[i].chan,
8812                                channels[i].power_level,
8813                                channels[i].
8814                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8815                                " (IEEE 802.11h required)" : "",
8816                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8817                                 || (channels[i].
8818                                     flag &
8819                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8820                                ", IBSS",
8821                                channels[i].
8822                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8823                                "active/passive" : "passive only");
8824
8825         return len;
8826 }
8827
8828 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8829
8830 static ssize_t show_statistics(struct device *d,
8831                                struct device_attribute *attr, char *buf)
8832 {
8833         struct iwl4965_priv *priv = dev_get_drvdata(d);
8834         u32 size = sizeof(struct iwl4965_notif_statistics);
8835         u32 len = 0, ofs = 0;
8836         u8 *data = (u8 *) & priv->statistics;
8837         int rc = 0;
8838
8839         if (!iwl4965_is_alive(priv))
8840                 return -EAGAIN;
8841
8842         mutex_lock(&priv->mutex);
8843         rc = iwl4965_send_statistics_request(priv);
8844         mutex_unlock(&priv->mutex);
8845
8846         if (rc) {
8847                 len = sprintf(buf,
8848                               "Error sending statistics request: 0x%08X\n", rc);
8849                 return len;
8850         }
8851
8852         while (size && (PAGE_SIZE - len)) {
8853                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8854                                    PAGE_SIZE - len, 1);
8855                 len = strlen(buf);
8856                 if (PAGE_SIZE - len)
8857                         buf[len++] = '\n';
8858
8859                 ofs += 16;
8860                 size -= min(size, 16U);
8861         }
8862
8863         return len;
8864 }
8865
8866 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8867
8868 static ssize_t show_antenna(struct device *d,
8869                             struct device_attribute *attr, char *buf)
8870 {
8871         struct iwl4965_priv *priv = dev_get_drvdata(d);
8872
8873         if (!iwl4965_is_alive(priv))
8874                 return -EAGAIN;
8875
8876         return sprintf(buf, "%d\n", priv->antenna);
8877 }
8878
8879 static ssize_t store_antenna(struct device *d,
8880                              struct device_attribute *attr,
8881                              const char *buf, size_t count)
8882 {
8883         int ant;
8884         struct iwl4965_priv *priv = dev_get_drvdata(d);
8885
8886         if (count == 0)
8887                 return 0;
8888
8889         if (sscanf(buf, "%1i", &ant) != 1) {
8890                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8891                 return count;
8892         }
8893
8894         if ((ant >= 0) && (ant <= 2)) {
8895                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8896                 priv->antenna = (enum iwl4965_antenna)ant;
8897         } else
8898                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8899
8900
8901         return count;
8902 }
8903
8904 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8905
8906 static ssize_t show_status(struct device *d,
8907                            struct device_attribute *attr, char *buf)
8908 {
8909         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8910         if (!iwl4965_is_alive(priv))
8911                 return -EAGAIN;
8912         return sprintf(buf, "0x%08x\n", (int)priv->status);
8913 }
8914
8915 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8916
8917 static ssize_t dump_error_log(struct device *d,
8918                               struct device_attribute *attr,
8919                               const char *buf, size_t count)
8920 {
8921         char *p = (char *)buf;
8922
8923         if (p[0] == '1')
8924                 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8925
8926         return strnlen(buf, count);
8927 }
8928
8929 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8930
8931 static ssize_t dump_event_log(struct device *d,
8932                               struct device_attribute *attr,
8933                               const char *buf, size_t count)
8934 {
8935         char *p = (char *)buf;
8936
8937         if (p[0] == '1')
8938                 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8939
8940         return strnlen(buf, count);
8941 }
8942
8943 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8944
8945 /*****************************************************************************
8946  *
8947  * driver setup and teardown
8948  *
8949  *****************************************************************************/
8950
8951 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8952 {
8953         priv->workqueue = create_workqueue(DRV_NAME);
8954
8955         init_waitqueue_head(&priv->wait_command_queue);
8956
8957         INIT_WORK(&priv->up, iwl4965_bg_up);
8958         INIT_WORK(&priv->restart, iwl4965_bg_restart);
8959         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8960         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8961         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8962         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8963         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8964         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8965         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8966         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8967         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8968         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8969
8970         iwl4965_hw_setup_deferred_work(priv);
8971
8972         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8973                      iwl4965_irq_tasklet, (unsigned long)priv);
8974 }
8975
8976 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
8977 {
8978         iwl4965_hw_cancel_deferred_work(priv);
8979
8980         cancel_delayed_work_sync(&priv->init_alive_start);
8981         cancel_delayed_work(&priv->scan_check);
8982         cancel_delayed_work(&priv->alive_start);
8983         cancel_delayed_work(&priv->post_associate);
8984         cancel_work_sync(&priv->beacon_update);
8985 }
8986
8987 static struct attribute *iwl4965_sysfs_entries[] = {
8988         &dev_attr_antenna.attr,
8989         &dev_attr_channels.attr,
8990         &dev_attr_dump_errors.attr,
8991         &dev_attr_dump_events.attr,
8992         &dev_attr_flags.attr,
8993         &dev_attr_filter_flags.attr,
8994 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8995         &dev_attr_measurement.attr,
8996 #endif
8997         &dev_attr_power_level.attr,
8998         &dev_attr_retry_rate.attr,
8999         &dev_attr_rf_kill.attr,
9000         &dev_attr_rs_window.attr,
9001         &dev_attr_statistics.attr,
9002         &dev_attr_status.attr,
9003         &dev_attr_temperature.attr,
9004         &dev_attr_tune.attr,
9005         &dev_attr_tx_power.attr,
9006
9007         NULL
9008 };
9009
9010 static struct attribute_group iwl4965_attribute_group = {
9011         .name = NULL,           /* put in device directory */
9012         .attrs = iwl4965_sysfs_entries,
9013 };
9014
9015 static struct ieee80211_ops iwl4965_hw_ops = {
9016         .tx = iwl4965_mac_tx,
9017         .start = iwl4965_mac_start,
9018         .stop = iwl4965_mac_stop,
9019         .add_interface = iwl4965_mac_add_interface,
9020         .remove_interface = iwl4965_mac_remove_interface,
9021         .config = iwl4965_mac_config,
9022         .config_interface = iwl4965_mac_config_interface,
9023         .configure_filter = iwl4965_configure_filter,
9024         .set_key = iwl4965_mac_set_key,
9025         .get_stats = iwl4965_mac_get_stats,
9026         .get_tx_stats = iwl4965_mac_get_tx_stats,
9027         .conf_tx = iwl4965_mac_conf_tx,
9028         .get_tsf = iwl4965_mac_get_tsf,
9029         .reset_tsf = iwl4965_mac_reset_tsf,
9030         .beacon_update = iwl4965_mac_beacon_update,
9031         .bss_info_changed = iwl4965_bss_info_changed,
9032 #ifdef CONFIG_IWL4965_HT
9033         .conf_ht = iwl4965_mac_conf_ht,
9034         .ampdu_action = iwl4965_mac_ampdu_action,
9035 #endif  /* CONFIG_IWL4965_HT */
9036         .hw_scan = iwl4965_mac_hw_scan
9037 };
9038
9039 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9040 {
9041         int err = 0;
9042         struct iwl4965_priv *priv;
9043         struct ieee80211_hw *hw;
9044         int i;
9045         DECLARE_MAC_BUF(mac);
9046
9047         /* Disabling hardware scan means that mac80211 will perform scans
9048          * "the hard way", rather than using device's scan. */
9049         if (iwl4965_param_disable_hw_scan) {
9050                 IWL_DEBUG_INFO("Disabling hw_scan\n");
9051                 iwl4965_hw_ops.hw_scan = NULL;
9052         }
9053
9054         if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
9055             (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
9056                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
9057                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
9058                 err = -EINVAL;
9059                 goto out;
9060         }
9061
9062         /* mac80211 allocates memory for this device instance, including
9063          *   space for this driver's private structure */
9064         hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
9065         if (hw == NULL) {
9066                 IWL_ERROR("Can not allocate network device\n");
9067                 err = -ENOMEM;
9068                 goto out;
9069         }
9070         SET_IEEE80211_DEV(hw, &pdev->dev);
9071
9072         hw->rate_control_algorithm = "iwl-4965-rs";
9073
9074         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
9075         priv = hw->priv;
9076         priv->hw = hw;
9077
9078         priv->pci_dev = pdev;
9079         priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
9080 #ifdef CONFIG_IWL4965_DEBUG
9081         iwl4965_debug_level = iwl4965_param_debug;
9082         atomic_set(&priv->restrict_refcnt, 0);
9083 #endif
9084         priv->retry_rate = 1;
9085
9086         priv->ibss_beacon = NULL;
9087
9088         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
9089          *   the range of signal quality values that we'll provide.
9090          * Negative values for level/noise indicate that we'll provide dBm.
9091          * For WE, at least, non-0 values here *enable* display of values
9092          *   in app (iwconfig). */
9093         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
9094         hw->max_noise = -20;    /* noise level, negative indicates dBm */
9095         hw->max_signal = 100;   /* link quality indication (%) */
9096
9097         /* Tell mac80211 our Tx characteristics */
9098         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
9099
9100         /* Default value; 4 EDCA QOS priorities */
9101         hw->queues = 4;
9102 #ifdef CONFIG_IWL4965_HT
9103         /* Enhanced value; more queues, to support 11n aggregation */
9104         hw->queues = 16;
9105 #endif /* CONFIG_IWL4965_HT */
9106
9107         spin_lock_init(&priv->lock);
9108         spin_lock_init(&priv->power_data.lock);
9109         spin_lock_init(&priv->sta_lock);
9110         spin_lock_init(&priv->hcmd_lock);
9111         spin_lock_init(&priv->lq_mngr.lock);
9112
9113         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9114                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9115
9116         INIT_LIST_HEAD(&priv->free_frames);
9117
9118         mutex_init(&priv->mutex);
9119         if (pci_enable_device(pdev)) {
9120                 err = -ENODEV;
9121                 goto out_ieee80211_free_hw;
9122         }
9123
9124         pci_set_master(pdev);
9125
9126         /* Clear the driver's (not device's) station table */
9127         iwl4965_clear_stations_table(priv);
9128
9129         priv->data_retry_limit = -1;
9130         priv->ieee_channels = NULL;
9131         priv->ieee_rates = NULL;
9132         priv->phymode = -1;
9133
9134         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9135         if (!err)
9136                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9137         if (err) {
9138                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9139                 goto out_pci_disable_device;
9140         }
9141
9142         pci_set_drvdata(pdev, priv);
9143         err = pci_request_regions(pdev, DRV_NAME);
9144         if (err)
9145                 goto out_pci_disable_device;
9146
9147         /* We disable the RETRY_TIMEOUT register (0x41) to keep
9148          * PCI Tx retries from interfering with C3 CPU state */
9149         pci_write_config_byte(pdev, 0x41, 0x00);
9150
9151         priv->hw_base = pci_iomap(pdev, 0, 0);
9152         if (!priv->hw_base) {
9153                 err = -ENODEV;
9154                 goto out_pci_release_regions;
9155         }
9156
9157         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9158                         (unsigned long long) pci_resource_len(pdev, 0));
9159         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9160
9161         /* Initialize module parameter values here */
9162
9163         /* Disable radio (SW RF KILL) via parameter when loading driver */
9164         if (iwl4965_param_disable) {
9165                 set_bit(STATUS_RF_KILL_SW, &priv->status);
9166                 IWL_DEBUG_INFO("Radio disabled.\n");
9167         }
9168
9169         priv->iw_mode = IEEE80211_IF_TYPE_STA;
9170
9171         priv->ps_mode = 0;
9172         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9173         priv->valid_antenna = 0x7;      /* assume all 3 connected */
9174         priv->ps_mode = IWL_MIMO_PS_NONE;
9175
9176         /* Choose which receivers/antennas to use */
9177         iwl4965_set_rxon_chain(priv);
9178
9179         printk(KERN_INFO DRV_NAME
9180                ": Detected Intel Wireless WiFi Link 4965AGN\n");
9181
9182         /* Device-specific setup */
9183         if (iwl4965_hw_set_hw_setting(priv)) {
9184                 IWL_ERROR("failed to set hw settings\n");
9185                 goto out_iounmap;
9186         }
9187
9188 #ifdef CONFIG_IWL4965_QOS
9189         if (iwl4965_param_qos_enable)
9190                 priv->qos_data.qos_enable = 1;
9191
9192         iwl4965_reset_qos(priv);
9193
9194         priv->qos_data.qos_active = 0;
9195         priv->qos_data.qos_cap.val = 0;
9196 #endif /* CONFIG_IWL4965_QOS */
9197
9198         iwl4965_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9199         iwl4965_setup_deferred_work(priv);
9200         iwl4965_setup_rx_handlers(priv);
9201
9202         priv->rates_mask = IWL_RATES_MASK;
9203         /* If power management is turned on, default to AC mode */
9204         priv->power_mode = IWL_POWER_AC;
9205         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9206
9207         iwl4965_disable_interrupts(priv);
9208
9209         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9210         if (err) {
9211                 IWL_ERROR("failed to create sysfs device attributes\n");
9212                 goto out_release_irq;
9213         }
9214
9215         /* nic init */
9216         iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
9217                     CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
9218
9219         iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
9220         err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
9221                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
9222                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
9223         if (err < 0) {
9224                 IWL_DEBUG_INFO("Failed to init the card\n");
9225                 goto out_remove_sysfs;
9226         }
9227         /* Read the EEPROM */
9228         err = iwl4965_eeprom_init(priv);
9229         if (err) {
9230                 IWL_ERROR("Unable to init EEPROM\n");
9231                 goto out_remove_sysfs;
9232         }
9233         /* MAC Address location in EEPROM same for 3945/4965 */
9234         get_eeprom_mac(priv, priv->mac_addr);
9235         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
9236         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
9237
9238         err = iwl4965_init_channel_map(priv);
9239         if (err) {
9240                 IWL_ERROR("initializing regulatory failed: %d\n", err);
9241                 goto out_remove_sysfs;
9242         }
9243
9244         err = iwl4965_init_geos(priv);
9245         if (err) {
9246                 IWL_ERROR("initializing geos failed: %d\n", err);
9247                 goto out_free_channel_map;
9248         }
9249         iwl4965_reset_channel_flag(priv);
9250
9251         iwl4965_rate_control_register(priv->hw);
9252         err = ieee80211_register_hw(priv->hw);
9253         if (err) {
9254                 IWL_ERROR("Failed to register network device (error %d)\n", err);
9255                 goto out_free_geos;
9256         }
9257
9258         priv->hw->conf.beacon_int = 100;
9259         priv->mac80211_registered = 1;
9260         pci_save_state(pdev);
9261         pci_disable_device(pdev);
9262
9263         return 0;
9264
9265  out_free_geos:
9266         iwl4965_free_geos(priv);
9267  out_free_channel_map:
9268         iwl4965_free_channel_map(priv);
9269  out_remove_sysfs:
9270         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9271
9272  out_release_irq:
9273         destroy_workqueue(priv->workqueue);
9274         priv->workqueue = NULL;
9275         iwl4965_unset_hw_setting(priv);
9276
9277  out_iounmap:
9278         pci_iounmap(pdev, priv->hw_base);
9279  out_pci_release_regions:
9280         pci_release_regions(pdev);
9281  out_pci_disable_device:
9282         pci_disable_device(pdev);
9283         pci_set_drvdata(pdev, NULL);
9284  out_ieee80211_free_hw:
9285         ieee80211_free_hw(priv->hw);
9286  out:
9287         return err;
9288 }
9289
9290 static void iwl4965_pci_remove(struct pci_dev *pdev)
9291 {
9292         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9293         struct list_head *p, *q;
9294         int i;
9295
9296         if (!priv)
9297                 return;
9298
9299         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9300
9301         set_bit(STATUS_EXIT_PENDING, &priv->status);
9302
9303         iwl4965_down(priv);
9304
9305         /* Free MAC hash list for ADHOC */
9306         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9307                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9308                         list_del(p);
9309                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9310                 }
9311         }
9312
9313         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9314
9315         iwl4965_dealloc_ucode_pci(priv);
9316
9317         if (priv->rxq.bd)
9318                 iwl4965_rx_queue_free(priv, &priv->rxq);
9319         iwl4965_hw_txq_ctx_free(priv);
9320
9321         iwl4965_unset_hw_setting(priv);
9322         iwl4965_clear_stations_table(priv);
9323
9324         if (priv->mac80211_registered) {
9325                 ieee80211_unregister_hw(priv->hw);
9326                 iwl4965_rate_control_unregister(priv->hw);
9327         }
9328
9329         /*netif_stop_queue(dev); */
9330         flush_workqueue(priv->workqueue);
9331
9332         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9333          * priv->workqueue... so we can't take down the workqueue
9334          * until now... */
9335         destroy_workqueue(priv->workqueue);
9336         priv->workqueue = NULL;
9337
9338         pci_iounmap(pdev, priv->hw_base);
9339         pci_release_regions(pdev);
9340         pci_disable_device(pdev);
9341         pci_set_drvdata(pdev, NULL);
9342
9343         iwl4965_free_channel_map(priv);
9344         iwl4965_free_geos(priv);
9345
9346         if (priv->ibss_beacon)
9347                 dev_kfree_skb(priv->ibss_beacon);
9348
9349         ieee80211_free_hw(priv->hw);
9350 }
9351
9352 #ifdef CONFIG_PM
9353
9354 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9355 {
9356         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9357
9358         if (priv->is_open) {
9359                 set_bit(STATUS_IN_SUSPEND, &priv->status);
9360                 iwl4965_mac_stop(priv->hw);
9361                 priv->is_open = 1;
9362         }
9363
9364         pci_set_power_state(pdev, PCI_D3hot);
9365
9366         return 0;
9367 }
9368
9369 static int iwl4965_pci_resume(struct pci_dev *pdev)
9370 {
9371         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9372
9373         pci_set_power_state(pdev, PCI_D0);
9374
9375         if (priv->is_open)
9376                 iwl4965_mac_start(priv->hw);
9377
9378         clear_bit(STATUS_IN_SUSPEND, &priv->status);
9379         return 0;
9380 }
9381
9382 #endif /* CONFIG_PM */
9383
9384 /*****************************************************************************
9385  *
9386  * driver and module entry point
9387  *
9388  *****************************************************************************/
9389
9390 static struct pci_driver iwl4965_driver = {
9391         .name = DRV_NAME,
9392         .id_table = iwl4965_hw_card_ids,
9393         .probe = iwl4965_pci_probe,
9394         .remove = __devexit_p(iwl4965_pci_remove),
9395 #ifdef CONFIG_PM
9396         .suspend = iwl4965_pci_suspend,
9397         .resume = iwl4965_pci_resume,
9398 #endif
9399 };
9400
9401 static int __init iwl4965_init(void)
9402 {
9403
9404         int ret;
9405         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9406         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9407         ret = pci_register_driver(&iwl4965_driver);
9408         if (ret) {
9409                 IWL_ERROR("Unable to initialize PCI module\n");
9410                 return ret;
9411         }
9412 #ifdef CONFIG_IWL4965_DEBUG
9413         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9414         if (ret) {
9415                 IWL_ERROR("Unable to create driver sysfs file\n");
9416                 pci_unregister_driver(&iwl4965_driver);
9417                 return ret;
9418         }
9419 #endif
9420
9421         return ret;
9422 }
9423
9424 static void __exit iwl4965_exit(void)
9425 {
9426 #ifdef CONFIG_IWL4965_DEBUG
9427         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9428 #endif
9429         pci_unregister_driver(&iwl4965_driver);
9430 }
9431
9432 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9433 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9434 module_param_named(disable, iwl4965_param_disable, int, 0444);
9435 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9436 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9437 MODULE_PARM_DESC(hwcrypto,
9438                  "using hardware crypto engine (default 0 [software])\n");
9439 module_param_named(debug, iwl4965_param_debug, int, 0444);
9440 MODULE_PARM_DESC(debug, "debug output mask");
9441 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9442 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9443
9444 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9445 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9446
9447 /* QoS */
9448 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9449 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9450 module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
9451 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
9452
9453 module_exit(iwl4965_exit);
9454 module_init(iwl4965_init);