err.no Git - linux-2.6/blob - 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 /*
  31  * NOTE:  This file (iwl-base.c) is used to build to multiple hardware targets
  32  * by defining IWL to either 3945 or 4965.  The Makefile used when building
  33  * the base targets will create base-3945.o and base-4965.o
  34  *
  35  * The eventual goal is to move as many of the #if IWL / #endif blocks out of
  36  * this file and into the hardware specific implementation files (iwl-XXXX.c)
  37  * and leave only the common (non #ifdef sprinkled) code in this file
  38  */
  39
  40 #include <linux/kernel.h>
  41 #include <linux/module.h>
  42 #include <linux/version.h>
  43 #include <linux/init.h>
  44 #include <linux/pci.h>
  45 #include <linux/dma-mapping.h>
  46 #include <linux/delay.h>
  47 #include <linux/skbuff.h>
  48 #include <linux/netdevice.h>
  49 #include <linux/wireless.h>
  50 #include <linux/firmware.h>
  51 #include <linux/etherdevice.h>
  52 #include <linux/if_arp.h>
  53
  54 #include <net/ieee80211_radiotap.h>
  55 #include <net/mac80211.h>
  56
  57 #include <asm/div64.h>
  58
  59 #include "iwl-4965.h"
  60 #include "iwl-helpers.h"
  61
  62 #ifdef CONFIG_IWL4965_DEBUG
  63 u32 iwl4965_debug_level;
  64 #endif
  65
  66 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
  67                                   struct iwl4965_tx_queue *txq);
  68
  69 /******************************************************************************
  70  *
  71  * module boiler plate
  72  *
  73  ******************************************************************************/
  74
  75 /* module parameters */
  76 static int iwl4965_param_disable_hw_scan;
  77 static int iwl4965_param_debug;
  78 static int iwl4965_param_disable;      /* def: enable radio */
  79 static int iwl4965_param_antenna;      /* def: 0 = both antennas (use diversity) */
  80 int iwl4965_param_hwcrypto;     /* def: using software encryption */
  81 static int iwl4965_param_qos_enable = 1;
  82 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES;
  83
  84 /*
  85  * module name, copyright, version, etc.
  86  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  87  */
  88
  89 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  90
  91 #ifdef CONFIG_IWL4965_DEBUG
  92 #define VD "d"
  93 #else
  94 #define VD
  95 #endif
  96
  97 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  98 #define VS "s"
  99 #else
 100 #define VS
 101 #endif
 102
 103 #define IWLWIFI_VERSION "1.1.19k" VD VS
 104 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
 105 #define DRV_VERSION     IWLWIFI_VERSION
 106
 107 /* Change firmware file name, using "-" and incrementing number,
 108  *   *only* when uCode interface or architecture changes so that it
 109  *   is not compatible with earlier drivers.
 110  * This number will also appear in << 8 position of 1st dword of uCode file */
 111 #define IWL4965_UCODE_API "-1"
 112
 113 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 114 MODULE_VERSION(DRV_VERSION);
 115 MODULE_AUTHOR(DRV_COPYRIGHT);
 116 MODULE_LICENSE("GPL");
 117
 118 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
 119 {
 120         u16 fc = le16_to_cpu(hdr->frame_control);
 121         int hdr_len = ieee80211_get_hdrlen(fc);
 122
 123         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 124                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 125         return NULL;
 126 }
 127
 128 static const struct ieee80211_hw_mode *iwl4965_get_hw_mode(
 129                 struct iwl4965_priv *priv, int mode)
 130 {
 131         int i;
 132
 133         for (i = 0; i < 3; i++)
 134                 if (priv->modes[i].mode == mode)
 135                         return &priv->modes[i];
 136
 137         return NULL;
 138 }
 139
 140 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 141 {
 142         /* Single white space is for Linksys APs */
 143         if (essid_len == 1 && essid[0] == ' ')
 144                 return 1;
 145
 146         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 147         while (essid_len) {
 148                 essid_len--;
 149                 if (essid[essid_len] != '\0')
 150                         return 0;
 151         }
 152
 153         return 1;
 154 }
 155
 156 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 157 {
 158         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 159         const char *s = essid;
 160         char *d = escaped;
 161
 162         if (iwl4965_is_empty_essid(essid, essid_len)) {
 163                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 164                 return escaped;
 165         }
 166
 167         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 168         while (essid_len--) {
 169                 if (*s == '\0') {
 170                         *d++ = '\\';
 171                         *d++ = '0';
 172                         s++;
 173                 } else
 174                         *d++ = *s++;
 175         }
 176         *d = '\0';
 177         return escaped;
 178 }
 179
 180 static void iwl4965_print_hex_dump(int level, void *p, u32 len)
 181 {
 182 #ifdef CONFIG_IWL4965_DEBUG
 183         if (!(iwl4965_debug_level & level))
 184                 return;
 185
 186         print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
 187                         p, len, 1);
 188 #endif
 189 }
 190
 191 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 192  * DMA services
 193  *
 194  * Theory of operation
 195  *
 196  * A queue is a circular buffers with 'Read' and 'Write' pointers.
 197  * 2 empty entries always kept in the buffer to protect from overflow.
 198  *
 199  * For Tx queue, there are low mark and high mark limits. If, after queuing
 200  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 201  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 202  * Tx queue resumed.
 203  *
 204  * The IWL operates with six queues, one receive queue in the device's
 205  * sram, one transmit queue for sending commands to the device firmware,
 206  * and four transmit queues for data.
 207  ***************************************************/
 208
 209 static int iwl4965_queue_space(const struct iwl4965_queue *q)
 210 {
 211         int s = q->read_ptr - q->write_ptr;
 212
 213         if (q->read_ptr > q->write_ptr)
 214                 s -= q->n_bd;
 215
 216         if (s <= 0)
 217                 s += q->n_window;
 218         /* keep some reserve to not confuse empty and full situations */
 219         s -= 2;
 220         if (s < 0)
 221                 s = 0;
 222         return s;
 223 }
 224
 225 /* XXX: n_bd must be power-of-two size */
 226 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
 227 {
 228         return ++index & (n_bd - 1);
 229 }
 230
 231 /* XXX: n_bd must be power-of-two size */
 232 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
 233 {
 234         return --index & (n_bd - 1);
 235 }
 236
 237 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 238 {
 239         return q->write_ptr > q->read_ptr ?
 240                 (i >= q->read_ptr && i < q->write_ptr) :
 241                 !(i < q->read_ptr && i >= q->write_ptr);
 242 }
 243
 244 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 245 {
 246         if (is_huge)
 247                 return q->n_window;
 248
 249         return index & (q->n_window - 1);
 250 }
 251
 252 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
 253                           int count, int slots_num, u32 id)
 254 {
 255         q->n_bd = count;
 256         q->n_window = slots_num;
 257         q->id = id;
 258
 259         /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
 260          * and iwl4965_queue_dec_wrap are broken. */
 261         BUG_ON(!is_power_of_2(count));
 262
 263         /* slots_num must be power-of-two size, otherwise
 264          * get_cmd_index is broken. */
 265         BUG_ON(!is_power_of_2(slots_num));
 266
 267         q->low_mark = q->n_window / 4;
 268         if (q->low_mark < 4)
 269                 q->low_mark = 4;
 270
 271         q->high_mark = q->n_window / 8;
 272         if (q->high_mark < 2)
 273                 q->high_mark = 2;
 274
 275         q->write_ptr = q->read_ptr = 0;
 276
 277         return 0;
 278 }
 279
 280 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
 281                               struct iwl4965_tx_queue *txq, u32 id)
 282 {
 283         struct pci_dev *dev = priv->pci_dev;
 284
 285         if (id != IWL_CMD_QUEUE_NUM) {
 286                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 287                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 288                 if (!txq->txb) {
 289                         IWL_ERROR("kmalloc for auxiliary BD "
 290                                   "structures failed\n");
 291                         goto error;
 292                 }
 293         } else
 294                 txq->txb = NULL;
 295
 296         txq->bd = pci_alloc_consistent(dev,
 297                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 298                         &txq->q.dma_addr);
 299
 300         if (!txq->bd) {
 301                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 302                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 303                 goto error;
 304         }
 305         txq->q.id = id;
 306
 307         return 0;
 308
 309  error:
 310         if (txq->txb) {
 311                 kfree(txq->txb);
 312                 txq->txb = NULL;
 313         }
 314
 315         return -ENOMEM;
 316 }
 317
 318 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
 319                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 320 {
 321         struct pci_dev *dev = priv->pci_dev;
 322         int len;
 323         int rc = 0;
 324
 325         /* allocate command space + one big command for scan since scan
 326          * command is very huge the system will not have two scan at the
 327          * same time */
 328         len = sizeof(struct iwl4965_cmd) * slots_num;
 329         if (txq_id == IWL_CMD_QUEUE_NUM)
 330                 len +=  IWL_MAX_SCAN_SIZE;
 331         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 332         if (!txq->cmd)
 333                 return -ENOMEM;
 334
 335         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 336         if (rc) {
 337                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 338
 339                 return -ENOMEM;
 340         }
 341         txq->need_update = 0;
 342
 343         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 344          * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
 345         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 346         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 347
 348         iwl4965_hw_tx_queue_init(priv, txq);
 349
 350         return 0;
 351 }
 352
 353 /**
 354  * iwl4965_tx_queue_free - Deallocate DMA queue.
 355  * @txq: Transmit queue to deallocate.
 356  *
 357  * Empty queue by removing and destroying all BD's.
 358  * Free all buffers.  txq itself is not freed.
 359  *
 360  */
 361 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
 362 {
 363         struct iwl4965_queue *q = &txq->q;
 364         struct pci_dev *dev = priv->pci_dev;
 365         int len;
 366
 367         if (q->n_bd == 0)
 368                 return;
 369
 370         /* first, empty all BD's */
 371         for (; q->write_ptr != q->read_ptr;
 372              q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
 373                 iwl4965_hw_txq_free_tfd(priv, txq);
 374
 375         len = sizeof(struct iwl4965_cmd) * q->n_window;
 376         if (q->id == IWL_CMD_QUEUE_NUM)
 377                 len += IWL_MAX_SCAN_SIZE;
 378
 379         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 380
 381         /* free buffers belonging to queue itself */
 382         if (txq->q.n_bd)
 383                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 384                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 385
 386         if (txq->txb) {
 387                 kfree(txq->txb);
 388                 txq->txb = NULL;
 389         }
 390
 391         /* 0 fill whole structure */
 392         memset(txq, 0, sizeof(*txq));
 393 }
 394
 395 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 396
 397 /*************** STATION TABLE MANAGEMENT ****
 398  *
 399  * NOTE:  This needs to be overhauled to better synchronize between
 400  * how the iwl-4965.c is using iwl4965_hw_find_station vs. iwl-3945.c
 401  *
 402  * mac80211 should also be examined to determine if sta_info is duplicating
 403  * the functionality provided here
 404  */
 405
 406 /**************************************************************/
 407
 408 #if 0 /* temporary disable till we add real remove station */
 409 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
 410 {
 411         int index = IWL_INVALID_STATION;
 412         int i;
 413         unsigned long flags;
 414
 415         spin_lock_irqsave(&priv->sta_lock, flags);
 416
 417         if (is_ap)
 418                 index = IWL_AP_ID;
 419         else if (is_broadcast_ether_addr(addr))
 420                 index = priv->hw_setting.bcast_sta_id;
 421         else
 422                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 423                         if (priv->stations[i].used &&
 424                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 425                                                 addr)) {
 426                                 index = i;
 427                                 break;
 428                         }
 429
 430         if (unlikely(index == IWL_INVALID_STATION))
 431                 goto out;
 432
 433         if (priv->stations[index].used) {
 434                 priv->stations[index].used = 0;
 435                 priv->num_stations--;
 436         }
 437
 438         BUG_ON(priv->num_stations < 0);
 439
 440 out:
 441         spin_unlock_irqrestore(&priv->sta_lock, flags);
 442         return 0;
 443 }
 444 #endif
 445
 446 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
 447 {
 448         unsigned long flags;
 449
 450         spin_lock_irqsave(&priv->sta_lock, flags);
 451
 452         priv->num_stations = 0;
 453         memset(priv->stations, 0, sizeof(priv->stations));
 454
 455         spin_unlock_irqrestore(&priv->sta_lock, flags);
 456 }
 457
 458 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr, int is_ap, u8 flags)
 459 {
 460         int i;
 461         int index = IWL_INVALID_STATION;
 462         struct iwl4965_station_entry *station;
 463         unsigned long flags_spin;
 464         DECLARE_MAC_BUF(mac);
 465
 466         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 467         if (is_ap)
 468                 index = IWL_AP_ID;
 469         else if (is_broadcast_ether_addr(addr))
 470                 index = priv->hw_setting.bcast_sta_id;
 471         else
 472                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 473                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 474                                                 addr)) {
 475                                 index = i;
 476                                 break;
 477                         }
 478
 479                         if (!priv->stations[i].used &&
 480                             index == IWL_INVALID_STATION)
 481                                 index = i;
 482                 }
 483
 484
 485         /* These two conditions has the same outcome but keep them separate
 486           since they have different meaning */
 487         if (unlikely(index == IWL_INVALID_STATION)) {
 488                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 489                 return index;
 490         }
 491
 492         if (priv->stations[index].used &&
 493             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 494                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 495                 return index;
 496         }
 497
 498
 499         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 500         station = &priv->stations[index];
 501         station->used = 1;
 502         priv->num_stations++;
 503
 504         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 505         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 506         station->sta.mode = 0;
 507         station->sta.sta.sta_id = index;
 508         station->sta.station_flags = 0;
 509
 510 #ifdef CONFIG_IWL4965_HT
 511         /* BCAST station and IBSS stations do not work in HT mode */
 512         if (index != priv->hw_setting.bcast_sta_id &&
 513             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 514                 iwl4965_set_ht_add_station(priv, index);
 515 #endif /*CONFIG_IWL4965_HT*/
 516
 517         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 518         iwl4965_send_add_station(priv, &station->sta, flags);
 519         return index;
 520
 521 }
 522
 523 /*************** DRIVER STATUS FUNCTIONS   *****/
 524
 525 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
 526 {
 527         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 528          * set but EXIT_PENDING is not */
 529         return test_bit(STATUS_READY, &priv->status) &&
 530                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 531                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 532 }
 533
 534 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
 535 {
 536         return test_bit(STATUS_ALIVE, &priv->status);
 537 }
 538
 539 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
 540 {
 541         return test_bit(STATUS_INIT, &priv->status);
 542 }
 543
 544 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
 545 {
 546         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 547                test_bit(STATUS_RF_KILL_SW, &priv->status);
 548 }
 549
 550 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
 551 {
 552
 553         if (iwl4965_is_rfkill(priv))
 554                 return 0;
 555
 556         return iwl4965_is_ready(priv);
 557 }
 558
 559 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 560
 561 #define IWL_CMD(x) case x : return #x
 562
 563 static const char *get_cmd_string(u8 cmd)
 564 {
 565         switch (cmd) {
 566                 IWL_CMD(REPLY_ALIVE);
 567                 IWL_CMD(REPLY_ERROR);
 568                 IWL_CMD(REPLY_RXON);
 569                 IWL_CMD(REPLY_RXON_ASSOC);
 570                 IWL_CMD(REPLY_QOS_PARAM);
 571                 IWL_CMD(REPLY_RXON_TIMING);
 572                 IWL_CMD(REPLY_ADD_STA);
 573                 IWL_CMD(REPLY_REMOVE_STA);
 574                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 575                 IWL_CMD(REPLY_TX);
 576                 IWL_CMD(REPLY_RATE_SCALE);
 577                 IWL_CMD(REPLY_LEDS_CMD);
 578                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 579                 IWL_CMD(RADAR_NOTIFICATION);
 580                 IWL_CMD(REPLY_QUIET_CMD);
 581                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 582                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 583                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 584                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 585                 IWL_CMD(POWER_TABLE_CMD);
 586                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 587                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 588                 IWL_CMD(REPLY_SCAN_CMD);
 589                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 590                 IWL_CMD(SCAN_START_NOTIFICATION);
 591                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 592                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 593                 IWL_CMD(BEACON_NOTIFICATION);
 594                 IWL_CMD(REPLY_TX_BEACON);
 595                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 596                 IWL_CMD(QUIET_NOTIFICATION);
 597                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 598                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 599                 IWL_CMD(REPLY_BT_CONFIG);
 600                 IWL_CMD(REPLY_STATISTICS_CMD);
 601                 IWL_CMD(STATISTICS_NOTIFICATION);
 602                 IWL_CMD(REPLY_CARD_STATE_CMD);
 603                 IWL_CMD(CARD_STATE_NOTIFICATION);
 604                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 605                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
 606                 IWL_CMD(SENSITIVITY_CMD);
 607                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
 608                 IWL_CMD(REPLY_RX_PHY_CMD);
 609                 IWL_CMD(REPLY_RX_MPDU_CMD);
 610                 IWL_CMD(REPLY_4965_RX);
 611                 IWL_CMD(REPLY_COMPRESSED_BA);
 612         default:
 613                 return "UNKNOWN";
 614
 615         }
 616 }
 617
 618 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 619
 620 /**
 621  * iwl4965_enqueue_hcmd - enqueue a uCode command
 622  * @priv: device private data point
 623  * @cmd: a point to the ucode command structure
 624  *
 625  * The function returns < 0 values to indicate the operation is
 626  * failed. On success, it turns the index (> 0) of command in the
 627  * command queue.
 628  */
 629 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 630 {
 631         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 632         struct iwl4965_queue *q = &txq->q;
 633         struct iwl4965_tfd_frame *tfd;
 634         u32 *control_flags;
 635         struct iwl4965_cmd *out_cmd;
 636         u32 idx;
 637         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 638         dma_addr_t phys_addr;
 639         int ret;
 640         unsigned long flags;
 641
 642         /* If any of the command structures end up being larger than
 643          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 644          * we will need to increase the size of the TFD entries */
 645         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 646                !(cmd->meta.flags & CMD_SIZE_HUGE));
 647
 648         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 649                 IWL_ERROR("No space for Tx\n");
 650                 return -ENOSPC;
 651         }
 652
 653         spin_lock_irqsave(&priv->hcmd_lock, flags);
 654
 655         tfd = &txq->bd[q->write_ptr];
 656         memset(tfd, 0, sizeof(*tfd));
 657
 658         control_flags = (u32 *) tfd;
 659
 660         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 661         out_cmd = &txq->cmd[idx];
 662
 663         out_cmd->hdr.cmd = cmd->id;
 664         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 665         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 666
 667         /* At this point, the out_cmd now has all of the incoming cmd
 668          * information */
 669
 670         out_cmd->hdr.flags = 0;
 671         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 672                         INDEX_TO_SEQ(q->write_ptr));
 673         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 674                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 675
 676         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 677                         offsetof(struct iwl4965_cmd, hdr);
 678         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 679
 680         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 681                      "%d bytes at %d[%d]:%d\n",
 682                      get_cmd_string(out_cmd->hdr.cmd),
 683                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 684                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 685
 686         txq->need_update = 1;
 687         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 688         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
 689         iwl4965_tx_queue_update_write_ptr(priv, txq);
 690
 691         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 692         return ret ? ret : idx;
 693 }
 694
 695 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 696 {
 697         int ret;
 698
 699         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 700
 701         /* An asynchronous command can not expect an SKB to be set. */
 702         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 703
 704         /* An asynchronous command MUST have a callback. */
 705         BUG_ON(!cmd->meta.u.callback);
 706
 707         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 708                 return -EBUSY;
 709
 710         ret = iwl4965_enqueue_hcmd(priv, cmd);
 711         if (ret < 0) {
 712                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 713                           get_cmd_string(cmd->id), ret);
 714                 return ret;
 715         }
 716         return 0;
 717 }
 718
 719 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 720 {
 721         int cmd_idx;
 722         int ret;
 723         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 724
 725         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 726
 727          /* A synchronous command can not have a callback set. */
 728         BUG_ON(cmd->meta.u.callback != NULL);
 729
 730         if (atomic_xchg(&entry, 1)) {
 731                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 732                           get_cmd_string(cmd->id));
 733                 return -EBUSY;
 734         }
 735
 736         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 737
 738         if (cmd->meta.flags & CMD_WANT_SKB)
 739                 cmd->meta.source = &cmd->meta;
 740
 741         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
 742         if (cmd_idx < 0) {
 743                 ret = cmd_idx;
 744                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 745                           get_cmd_string(cmd->id), ret);
 746                 goto out;
 747         }
 748
 749         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 750                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 751                         HOST_COMPLETE_TIMEOUT);
 752         if (!ret) {
 753                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 754                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 755                                   get_cmd_string(cmd->id),
 756                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 757
 758                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 759                         ret = -ETIMEDOUT;
 760                         goto cancel;
 761                 }
 762         }
 763
 764         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 765                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 766                                get_cmd_string(cmd->id));
 767                 ret = -ECANCELED;
 768                 goto fail;
 769         }
 770         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 771                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 772                                get_cmd_string(cmd->id));
 773                 ret = -EIO;
 774                 goto fail;
 775         }
 776         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 777                 IWL_ERROR("Error: Response NULL in '%s'\n",
 778                           get_cmd_string(cmd->id));
 779                 ret = -EIO;
 780                 goto out;
 781         }
 782
 783         ret = 0;
 784         goto out;
 785
 786 cancel:
 787         if (cmd->meta.flags & CMD_WANT_SKB) {
 788                 struct iwl4965_cmd *qcmd;
 789
 790                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 791                  * TX cmd queue. Otherwise in case the cmd comes
 792                  * in later, it will possibly set an invalid
 793                  * address (cmd->meta.source). */
 794                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 795                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 796         }
 797 fail:
 798         if (cmd->meta.u.skb) {
 799                 dev_kfree_skb_any(cmd->meta.u.skb);
 800                 cmd->meta.u.skb = NULL;
 801         }
 802 out:
 803         atomic_set(&entry, 0);
 804         return ret;
 805 }
 806
 807 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 808 {
 809         if (cmd->meta.flags & CMD_ASYNC)
 810                 return iwl4965_send_cmd_async(priv, cmd);
 811
 812         return iwl4965_send_cmd_sync(priv, cmd);
 813 }
 814
 815 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
 816 {
 817         struct iwl4965_host_cmd cmd = {
 818                 .id = id,
 819                 .len = len,
 820                 .data = data,
 821         };
 822
 823         return iwl4965_send_cmd_sync(priv, &cmd);
 824 }
 825
 826 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
 827 {
 828         struct iwl4965_host_cmd cmd = {
 829                 .id = id,
 830                 .len = sizeof(val),
 831                 .data = &val,
 832         };
 833
 834         return iwl4965_send_cmd_sync(priv, &cmd);
 835 }
 836
 837 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
 838 {
 839         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 840 }
 841
 842 /**
 843  * iwl4965_rxon_add_station - add station into station table.
 844  *
 845  * there is only one AP station with id= IWL_AP_ID
 846  * NOTE: mutex must be held before calling the this fnction
 847 */
 848 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
 849                                 const u8 *addr, int is_ap)
 850 {
 851         u8 sta_id;
 852
 853         sta_id = iwl4965_add_station_flags(priv, addr, is_ap, 0);
 854         iwl4965_add_station(priv, addr, is_ap);
 855
 856         return sta_id;
 857 }
 858
 859 /**
 860  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
 861  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 862  * @channel: Any channel valid for the requested phymode
 863
 864  * In addition to setting the staging RXON, priv->phymode is also set.
 865  *
 866  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 867  * in the staging RXON flag structure based on the phymode
 868  */
 869 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode, u16 channel)
 870 {
 871         if (!iwl4965_get_channel_info(priv, phymode, channel)) {
 872                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 873                                channel, phymode);
 874                 return -EINVAL;
 875         }
 876
 877         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 878             (priv->phymode == phymode))
 879                 return 0;
 880
 881         priv->staging_rxon.channel = cpu_to_le16(channel);
 882         if (phymode == MODE_IEEE80211A)
 883                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 884         else
 885                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 886
 887         priv->phymode = phymode;
 888
 889         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
 890
 891         return 0;
 892 }
 893
 894 /**
 895  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 896  *
 897  * NOTE:  This is really only useful during development and can eventually
 898  * be #ifdef'd out once the driver is stable and folks aren't actively
 899  * making changes
 900  */
 901 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 902 {
 903         int error = 0;
 904         int counter = 1;
 905
 906         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 907                 error |= le32_to_cpu(rxon->flags &
 908                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 909                                  RXON_FLG_RADAR_DETECT_MSK));
 910                 if (error)
 911                         IWL_WARNING("check 24G fields %d | %d\n",
 912                                     counter++, error);
 913         } else {
 914                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 915                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 916                 if (error)
 917                         IWL_WARNING("check 52 fields %d | %d\n",
 918                                     counter++, error);
 919                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 920                 if (error)
 921                         IWL_WARNING("check 52 CCK %d | %d\n",
 922                                     counter++, error);
 923         }
 924         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 925         if (error)
 926                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 927
 928         /* make sure basic rates 6Mbps and 1Mbps are supported */
 929         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 930                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 931         if (error)
 932                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 933
 934         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 935         if (error)
 936                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 937
 938         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 939                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 940         if (error)
 941                 IWL_WARNING("check CCK and short slot %d | %d\n",
 942                             counter++, error);
 943
 944         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 945                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 946         if (error)
 947                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 948                             counter++, error);
 949
 950         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 951                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 952         if (error)
 953                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 954                             counter++, error);
 955
 956         if (error)
 957                 IWL_WARNING("Tuning to channel %d\n",
 958                             le16_to_cpu(rxon->channel));
 959
 960         if (error) {
 961                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 962                 return -1;
 963         }
 964         return 0;
 965 }
 966
 967 /**
 968  * iwl4965_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
 969  * @priv: staging_rxon is compared to active_rxon
 970  *
 971  * If the RXON structure is changing sufficient to require a new
 972  * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
 973  * to indicate a new tune is required.
 974  */
 975 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
 976 {
 977
 978         /* These items are only settable from the full RXON command */
 979         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 980             compare_ether_addr(priv->staging_rxon.bssid_addr,
 981                                priv->active_rxon.bssid_addr) ||
 982             compare_ether_addr(priv->staging_rxon.node_addr,
 983                                priv->active_rxon.node_addr) ||
 984             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 985                                priv->active_rxon.wlap_bssid_addr) ||
 986             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 987             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 988             (priv->staging_rxon.air_propagation !=
 989              priv->active_rxon.air_propagation) ||
 990             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 991              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 992             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 993              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 994             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 995             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 996                 return 1;
 997
 998         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 999          * be updated with the RXON_ASSOC command -- however only some
1000          * flag transitions are allowed using RXON_ASSOC */
1001
1002         /* Check if we are not switching bands */
1003         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1004             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1005                 return 1;
1006
1007         /* Check if we are switching association toggle */
1008         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1009                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1010                 return 1;
1011
1012         return 0;
1013 }
1014
1015 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1016 {
1017         int rc = 0;
1018         struct iwl4965_rx_packet *res = NULL;
1019         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1020         struct iwl4965_host_cmd cmd = {
1021                 .id = REPLY_RXON_ASSOC,
1022                 .len = sizeof(rxon_assoc),
1023                 .meta.flags = CMD_WANT_SKB,
1024                 .data = &rxon_assoc,
1025         };
1026         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1027         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1028
1029         if ((rxon1->flags == rxon2->flags) &&
1030             (rxon1->filter_flags == rxon2->filter_flags) &&
1031             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1032             (rxon1->ofdm_ht_single_stream_basic_rates ==
1033              rxon2->ofdm_ht_single_stream_basic_rates) &&
1034             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1035              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1036             (rxon1->rx_chain == rxon2->rx_chain) &&
1037             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1038                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1039                 return 0;
1040         }
1041
1042         rxon_assoc.flags = priv->staging_rxon.flags;
1043         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1044         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1045         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1046         rxon_assoc.reserved = 0;
1047         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1048             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1049         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1050             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1051         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1052
1053         rc = iwl4965_send_cmd_sync(priv, &cmd);
1054         if (rc)
1055                 return rc;
1056
1057         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1058         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1059                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1060                 rc = -EIO;
1061         }
1062
1063         priv->alloc_rxb_skb--;
1064         dev_kfree_skb_any(cmd.meta.u.skb);
1065
1066         return rc;
1067 }
1068
1069 /**
1070  * iwl4965_commit_rxon - commit staging_rxon to hardware
1071  *
1072  * The RXON command in staging_rxon is committed to the hardware and
1073  * the active_rxon structure is updated with the new data.  This
1074  * function correctly transitions out of the RXON_ASSOC_MSK state if
1075  * a HW tune is required based on the RXON structure changes.
1076  */
1077 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1078 {
1079         /* cast away the const for active_rxon in this function */
1080         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1081         DECLARE_MAC_BUF(mac);
1082         int rc = 0;
1083
1084         if (!iwl4965_is_alive(priv))
1085                 return -1;
1086
1087         /* always get timestamp with Rx frame */
1088         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1089
1090         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1091         if (rc) {
1092                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1093                 return -EINVAL;
1094         }
1095
1096         /* If we don't need to send a full RXON, we can use
1097          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1098          * and other flags for the current radio configuration. */
1099         if (!iwl4965_full_rxon_required(priv)) {
1100                 rc = iwl4965_send_rxon_assoc(priv);
1101                 if (rc) {
1102                         IWL_ERROR("Error setting RXON_ASSOC "
1103                                   "configuration (%d).\n", rc);
1104                         return rc;
1105                 }
1106
1107                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1108
1109                 return 0;
1110         }
1111
1112         /* station table will be cleared */
1113         priv->assoc_station_added = 0;
1114
1115 #ifdef CONFIG_IWL4965_SENSITIVITY
1116         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1117         if (!priv->error_recovering)
1118                 priv->start_calib = 0;
1119
1120         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1121 #endif /* CONFIG_IWL4965_SENSITIVITY */
1122
1123         /* If we are currently associated and the new config requires
1124          * an RXON_ASSOC and the new config wants the associated mask enabled,
1125          * we must clear the associated from the active configuration
1126          * before we apply the new config */
1127         if (iwl4965_is_associated(priv) &&
1128             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1129                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1130                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1131
1132                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1133                                       sizeof(struct iwl4965_rxon_cmd),
1134                                       &priv->active_rxon);
1135
1136                 /* If the mask clearing failed then we set
1137                  * active_rxon back to what it was previously */
1138                 if (rc) {
1139                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1140                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1141                                   "configuration (%d).\n", rc);
1142                         return rc;
1143                 }
1144         }
1145
1146         IWL_DEBUG_INFO("Sending RXON\n"
1147                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1148                        "* channel = %d\n"
1149                        "* bssid = %s\n",
1150                        ((priv->staging_rxon.filter_flags &
1151                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1152                        le16_to_cpu(priv->staging_rxon.channel),
1153                        print_mac(mac, priv->staging_rxon.bssid_addr));
1154
1155         /* Apply the new configuration */
1156         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1157                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1158         if (rc) {
1159                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1160                 return rc;
1161         }
1162
1163         iwl4965_clear_stations_table(priv);
1164
1165 #ifdef CONFIG_IWL4965_SENSITIVITY
1166         if (!priv->error_recovering)
1167                 priv->start_calib = 0;
1168
1169         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1170         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1171 #endif /* CONFIG_IWL4965_SENSITIVITY */
1172
1173         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1174
1175         /* If we issue a new RXON command which required a tune then we must
1176          * send a new TXPOWER command or we won't be able to Tx any frames */
1177         rc = iwl4965_hw_reg_send_txpower(priv);
1178         if (rc) {
1179                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1180                 return rc;
1181         }
1182
1183         /* Add the broadcast address so we can send broadcast frames */
1184         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1185             IWL_INVALID_STATION) {
1186                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1187                 return -EIO;
1188         }
1189
1190         /* If we have set the ASSOC_MSK and we are in BSS mode then
1191          * add the IWL_AP_ID to the station rate table */
1192         if (iwl4965_is_associated(priv) &&
1193             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1194                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1195                     == IWL_INVALID_STATION) {
1196                         IWL_ERROR("Error adding AP address for transmit.\n");
1197                         return -EIO;
1198                 }
1199                 priv->assoc_station_added = 1;
1200         }
1201
1202         return 0;
1203 }
1204
1205 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1206 {
1207         struct iwl4965_bt_cmd bt_cmd = {
1208                 .flags = 3,
1209                 .lead_time = 0xAA,
1210                 .max_kill = 1,
1211                 .kill_ack_mask = 0,
1212                 .kill_cts_mask = 0,
1213         };
1214
1215         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1216                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1217 }
1218
1219 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1220 {
1221         int rc = 0;
1222         struct iwl4965_rx_packet *res;
1223         struct iwl4965_host_cmd cmd = {
1224                 .id = REPLY_SCAN_ABORT_CMD,
1225                 .meta.flags = CMD_WANT_SKB,
1226         };
1227
1228         /* If there isn't a scan actively going on in the hardware
1229          * then we are in between scan bands and not actually
1230          * actively scanning, so don't send the abort command */
1231         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1232                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1233                 return 0;
1234         }
1235
1236         rc = iwl4965_send_cmd_sync(priv, &cmd);
1237         if (rc) {
1238                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1239                 return rc;
1240         }
1241
1242         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1243         if (res->u.status != CAN_ABORT_STATUS) {
1244                 /* The scan abort will return 1 for success or
1245                  * 2 for "failure".  A failure condition can be
1246                  * due to simply not being in an active scan which
1247                  * can occur if we send the scan abort before we
1248                  * the microcode has notified us that a scan is
1249                  * completed. */
1250                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1251                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1252                 clear_bit(STATUS_SCAN_HW, &priv->status);
1253         }
1254
1255         dev_kfree_skb_any(cmd.meta.u.skb);
1256
1257         return rc;
1258 }
1259
1260 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1261                                         struct iwl4965_cmd *cmd,
1262                                         struct sk_buff *skb)
1263 {
1264         return 1;
1265 }
1266
1267 /*
1268  * CARD_STATE_CMD
1269  *
1270  * Use: Sets the internal card state to enable, disable, or halt
1271  *
1272  * When in the 'enable' state the card operates as normal.
1273  * When in the 'disable' state, the card enters into a low power mode.
1274  * When in the 'halt' state, the card is shut down and must be fully
1275  * restarted to come back on.
1276  */
1277 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1278 {
1279         struct iwl4965_host_cmd cmd = {
1280                 .id = REPLY_CARD_STATE_CMD,
1281                 .len = sizeof(u32),
1282                 .data = &flags,
1283                 .meta.flags = meta_flag,
1284         };
1285
1286         if (meta_flag & CMD_ASYNC)
1287                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1288
1289         return iwl4965_send_cmd(priv, &cmd);
1290 }
1291
1292 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1293                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1294 {
1295         struct iwl4965_rx_packet *res = NULL;
1296
1297         if (!skb) {
1298                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1299                 return 1;
1300         }
1301
1302         res = (struct iwl4965_rx_packet *)skb->data;
1303         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1304                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1305                           res->hdr.flags);
1306                 return 1;
1307         }
1308
1309         switch (res->u.add_sta.status) {
1310         case ADD_STA_SUCCESS_MSK:
1311                 break;
1312         default:
1313                 break;
1314         }
1315
1316         /* We didn't cache the SKB; let the caller free it */
1317         return 1;
1318 }
1319
1320 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1321                          struct iwl4965_addsta_cmd *sta, u8 flags)
1322 {
1323         struct iwl4965_rx_packet *res = NULL;
1324         int rc = 0;
1325         struct iwl4965_host_cmd cmd = {
1326                 .id = REPLY_ADD_STA,
1327                 .len = sizeof(struct iwl4965_addsta_cmd),
1328                 .meta.flags = flags,
1329                 .data = sta,
1330         };
1331
1332         if (flags & CMD_ASYNC)
1333                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1334         else
1335                 cmd.meta.flags |= CMD_WANT_SKB;
1336
1337         rc = iwl4965_send_cmd(priv, &cmd);
1338
1339         if (rc || (flags & CMD_ASYNC))
1340                 return rc;
1341
1342         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1343         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1344                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1345                           res->hdr.flags);
1346                 rc = -EIO;
1347         }
1348
1349         if (rc == 0) {
1350                 switch (res->u.add_sta.status) {
1351                 case ADD_STA_SUCCESS_MSK:
1352                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1353                         break;
1354                 default:
1355                         rc = -EIO;
1356                         IWL_WARNING("REPLY_ADD_STA failed\n");
1357                         break;
1358                 }
1359         }
1360
1361         priv->alloc_rxb_skb--;
1362         dev_kfree_skb_any(cmd.meta.u.skb);
1363
1364         return rc;
1365 }
1366
1367 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1368                                    struct ieee80211_key_conf *keyconf,
1369                                    u8 sta_id)
1370 {
1371         unsigned long flags;
1372         __le16 key_flags = 0;
1373
1374         switch (keyconf->alg) {
1375         case ALG_CCMP:
1376                 key_flags |= STA_KEY_FLG_CCMP;
1377                 key_flags |= cpu_to_le16(
1378                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1379                 key_flags &= ~STA_KEY_FLG_INVALID;
1380                 break;
1381         case ALG_TKIP:
1382         case ALG_WEP:
1383         default:
1384                 return -EINVAL;
1385         }
1386         spin_lock_irqsave(&priv->sta_lock, flags);
1387         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1388         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1389         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1390                keyconf->keylen);
1391
1392         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1393                keyconf->keylen);
1394         priv->stations[sta_id].sta.key.key_flags = key_flags;
1395         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1396         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1397
1398         spin_unlock_irqrestore(&priv->sta_lock, flags);
1399
1400         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1401         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1402         return 0;
1403 }
1404
1405 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1406 {
1407         unsigned long flags;
1408
1409         spin_lock_irqsave(&priv->sta_lock, flags);
1410         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1411         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1412         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1413         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1414         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1415         spin_unlock_irqrestore(&priv->sta_lock, flags);
1416
1417         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1418         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1419         return 0;
1420 }
1421
1422 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1423 {
1424         struct list_head *element;
1425
1426         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1427                        priv->frames_count);
1428
1429         while (!list_empty(&priv->free_frames)) {
1430                 element = priv->free_frames.next;
1431                 list_del(element);
1432                 kfree(list_entry(element, struct iwl4965_frame, list));
1433                 priv->frames_count--;
1434         }
1435
1436         if (priv->frames_count) {
1437                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1438                             priv->frames_count);
1439                 priv->frames_count = 0;
1440         }
1441 }
1442
1443 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1444 {
1445         struct iwl4965_frame *frame;
1446         struct list_head *element;
1447         if (list_empty(&priv->free_frames)) {
1448                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1449                 if (!frame) {
1450                         IWL_ERROR("Could not allocate frame!\n");
1451                         return NULL;
1452                 }
1453
1454                 priv->frames_count++;
1455                 return frame;
1456         }
1457
1458         element = priv->free_frames.next;
1459         list_del(element);
1460         return list_entry(element, struct iwl4965_frame, list);
1461 }
1462
1463 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1464 {
1465         memset(frame, 0, sizeof(*frame));
1466         list_add(&frame->list, &priv->free_frames);
1467 }
1468
1469 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1470                                 struct ieee80211_hdr *hdr,
1471                                 const u8 *dest, int left)
1472 {
1473
1474         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1475             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1476              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1477                 return 0;
1478
1479         if (priv->ibss_beacon->len > left)
1480                 return 0;
1481
1482         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1483
1484         return priv->ibss_beacon->len;
1485 }
1486
1487 int iwl4965_rate_index_from_plcp(int plcp)
1488 {
1489         int i = 0;
1490
1491         /* 4965 HT rate format */
1492         if (plcp & RATE_MCS_HT_MSK) {
1493                 i = (plcp & 0xff);
1494
1495                 if (i >= IWL_RATE_MIMO_6M_PLCP)
1496                         i = i - IWL_RATE_MIMO_6M_PLCP;
1497
1498                 i += IWL_FIRST_OFDM_RATE;
1499                 /* skip 9M not supported in ht*/
1500                 if (i >= IWL_RATE_9M_INDEX)
1501                         i += 1;
1502                 if ((i >= IWL_FIRST_OFDM_RATE) &&
1503                     (i <= IWL_LAST_OFDM_RATE))
1504                         return i;
1505
1506         /* 4965 legacy rate format, search for match in table */
1507         } else {
1508                 for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1509                         if (iwl4965_rates[i].plcp == (plcp &0xFF))
1510                                 return i;
1511         }
1512         return -1;
1513 }
1514
1515 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1516 {
1517         u8 i;
1518
1519         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1520              i = iwl4965_rates[i].next_ieee) {
1521                 if (rate_mask & (1 << i))
1522                         return iwl4965_rates[i].plcp;
1523         }
1524
1525         return IWL_RATE_INVALID;
1526 }
1527
1528 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1529 {
1530         struct iwl4965_frame *frame;
1531         unsigned int frame_size;
1532         int rc;
1533         u8 rate;
1534
1535         frame = iwl4965_get_free_frame(priv);
1536
1537         if (!frame) {
1538                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1539                           "command.\n");
1540                 return -ENOMEM;
1541         }
1542
1543         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1544                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1545                                                 0xFF0);
1546                 if (rate == IWL_INVALID_RATE)
1547                         rate = IWL_RATE_6M_PLCP;
1548         } else {
1549                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1550                 if (rate == IWL_INVALID_RATE)
1551                         rate = IWL_RATE_1M_PLCP;
1552         }
1553
1554         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1555
1556         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1557                               &frame->u.cmd[0]);
1558
1559         iwl4965_free_frame(priv, frame);
1560
1561         return rc;
1562 }
1563
1564 /******************************************************************************
1565  *
1566  * EEPROM related functions
1567  *
1568  ******************************************************************************/
1569
1570 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1571 {
1572         memcpy(mac, priv->eeprom.mac_address, 6);
1573 }
1574
1575 /**
1576  * iwl4965_eeprom_init - read EEPROM contents
1577  *
1578  * Load the EEPROM from adapter into priv->eeprom
1579  *
1580  * NOTE:  This routine uses the non-debug IO access functions.
1581  */
1582 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1583 {
1584         u16 *e = (u16 *)&priv->eeprom;
1585         u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1586         u32 r;
1587         int sz = sizeof(priv->eeprom);
1588         int rc;
1589         int i;
1590         u16 addr;
1591
1592         /* The EEPROM structure has several padding buffers within it
1593          * and when adding new EEPROM maps is subject to programmer errors
1594          * which may be very difficult to identify without explicitly
1595          * checking the resulting size of the eeprom map. */
1596         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1597
1598         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1599                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1600                 return -ENOENT;
1601         }
1602
1603         rc = iwl4965_eeprom_acquire_semaphore(priv);
1604         if (rc < 0) {
1605                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1606                 return -ENOENT;
1607         }
1608
1609         /* eeprom is an array of 16bit values */
1610         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1611                 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1612                 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1613
1614                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1615                                         i += IWL_EEPROM_ACCESS_DELAY) {
1616                         r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1617                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1618                                 break;
1619                         udelay(IWL_EEPROM_ACCESS_DELAY);
1620                 }
1621
1622                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1623                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1624                         rc = -ETIMEDOUT;
1625                         goto done;
1626                 }
1627                 e[addr / 2] = le16_to_cpu(r >> 16);
1628         }
1629         rc = 0;
1630
1631 done:
1632         iwl4965_eeprom_release_semaphore(priv);
1633         return rc;
1634 }
1635
1636 /******************************************************************************
1637  *
1638  * Misc. internal state and helper functions
1639  *
1640  ******************************************************************************/
1641 #ifdef CONFIG_IWL4965_DEBUG
1642
1643 /**
1644  * iwl4965_report_frame - dump frame to syslog during debug sessions
1645  *
1646  * hack this function to show different aspects of received frames,
1647  * including selective frame dumps.
1648  * group100 parameter selects whether to show 1 out of 100 good frames.
1649  *
1650  * TODO:  ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1651  *        info output is okay, but some of this stuff (e.g. iwl4965_rx_frame_stats)
1652  *        is 3945-specific and gives bad output for 4965.  Need to split the
1653  *        functionality, keep common stuff here.
1654  */
1655 void iwl4965_report_frame(struct iwl4965_priv *priv,
1656                       struct iwl4965_rx_packet *pkt,
1657                       struct ieee80211_hdr *header, int group100)
1658 {
1659         u32 to_us;
1660         u32 print_summary = 0;
1661         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1662         u32 hundred = 0;
1663         u32 dataframe = 0;
1664         u16 fc;
1665         u16 seq_ctl;
1666         u16 channel;
1667         u16 phy_flags;
1668         int rate_sym;
1669         u16 length;
1670         u16 status;
1671         u16 bcn_tmr;
1672         u32 tsf_low;
1673         u64 tsf;
1674         u8 rssi;
1675         u8 agc;
1676         u16 sig_avg;
1677         u16 noise_diff;
1678         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1679         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1680         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1681         u8 *data = IWL_RX_DATA(pkt);
1682
1683         /* MAC header */
1684         fc = le16_to_cpu(header->frame_control);
1685         seq_ctl = le16_to_cpu(header->seq_ctrl);
1686
1687         /* metadata */
1688         channel = le16_to_cpu(rx_hdr->channel);
1689         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1690         rate_sym = rx_hdr->rate;
1691         length = le16_to_cpu(rx_hdr->len);
1692
1693         /* end-of-frame status and timestamp */
1694         status = le32_to_cpu(rx_end->status);
1695         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1696         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1697         tsf = le64_to_cpu(rx_end->timestamp);
1698
1699         /* signal statistics */
1700         rssi = rx_stats->rssi;
1701         agc = rx_stats->agc;
1702         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1703         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1704
1705         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1706
1707         /* if data frame is to us and all is good,
1708          *   (optionally) print summary for only 1 out of every 100 */
1709         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1710             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1711                 dataframe = 1;
1712                 if (!group100)
1713                         print_summary = 1;      /* print each frame */
1714                 else if (priv->framecnt_to_us < 100) {
1715                         priv->framecnt_to_us++;
1716                         print_summary = 0;
1717                 } else {
1718                         priv->framecnt_to_us = 0;
1719                         print_summary = 1;
1720                         hundred = 1;
1721                 }
1722         } else {
1723                 /* print summary for all other frames */
1724                 print_summary = 1;
1725         }
1726
1727         if (print_summary) {
1728                 char *title;
1729                 u32 rate;
1730
1731                 if (hundred)
1732                         title = "100Frames";
1733                 else if (fc & IEEE80211_FCTL_RETRY)
1734                         title = "Retry";
1735                 else if (ieee80211_is_assoc_response(fc))
1736                         title = "AscRsp";
1737                 else if (ieee80211_is_reassoc_response(fc))
1738                         title = "RasRsp";
1739                 else if (ieee80211_is_probe_response(fc)) {
1740                         title = "PrbRsp";
1741                         print_dump = 1; /* dump frame contents */
1742                 } else if (ieee80211_is_beacon(fc)) {
1743                         title = "Beacon";
1744                         print_dump = 1; /* dump frame contents */
1745                 } else if (ieee80211_is_atim(fc))
1746                         title = "ATIM";
1747                 else if (ieee80211_is_auth(fc))
1748                         title = "Auth";
1749                 else if (ieee80211_is_deauth(fc))
1750                         title = "DeAuth";
1751                 else if (ieee80211_is_disassoc(fc))
1752                         title = "DisAssoc";
1753                 else
1754                         title = "Frame";
1755
1756                 rate = iwl4965_rate_index_from_plcp(rate_sym);
1757                 if (rate == -1)
1758                         rate = 0;
1759                 else
1760                         rate = iwl4965_rates[rate].ieee / 2;
1761
1762                 /* print frame summary.
1763                  * MAC addresses show just the last byte (for brevity),
1764                  *    but you can hack it to show more, if you'd like to. */
1765                 if (dataframe)
1766                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1767                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1768                                      title, fc, header->addr1[5],
1769                                      length, rssi, channel, rate);
1770                 else {
1771                         /* src/dst addresses assume managed mode */
1772                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1773                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1774                                      "phy=0x%02x, chnl=%d\n",
1775                                      title, fc, header->addr1[5],
1776                                      header->addr3[5], rssi,
1777                                      tsf_low - priv->scan_start_tsf,
1778                                      phy_flags, channel);
1779                 }
1780         }
1781         if (print_dump)
1782                 iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1783 }
1784 #endif
1785
1786 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1787 {
1788         if (priv->hw_setting.shared_virt)
1789                 pci_free_consistent(priv->pci_dev,
1790                                     sizeof(struct iwl4965_shared),
1791                                     priv->hw_setting.shared_virt,
1792                                     priv->hw_setting.shared_phys);
1793 }
1794
1795 /**
1796  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1797  *
1798  * return : set the bit for each supported rate insert in ie
1799  */
1800 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1801                                     u16 basic_rate, int *left)
1802 {
1803         u16 ret_rates = 0, bit;
1804         int i;
1805         u8 *cnt = ie;
1806         u8 *rates = ie + 1;
1807
1808         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1809                 if (bit & supported_rate) {
1810                         ret_rates |= bit;
1811                         rates[*cnt] = iwl4965_rates[i].ieee |
1812                                 ((bit & basic_rate) ? 0x80 : 0x00);
1813                         (*cnt)++;
1814                         (*left)--;
1815                         if ((*left <= 0) ||
1816                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1817                                 break;
1818                 }
1819         }
1820
1821         return ret_rates;
1822 }
1823
1824 #ifdef CONFIG_IWL4965_HT
1825 void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1826                              struct ieee80211_ht_capability *ht_cap,
1827                              u8 use_wide_chan);
1828 #endif
1829
1830 /**
1831  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1832  */
1833 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1834                               struct ieee80211_mgmt *frame,
1835                               int left, int is_direct)
1836 {
1837         int len = 0;
1838         u8 *pos = NULL;
1839         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1840
1841         /* Make sure there is enough space for the probe request,
1842          * two mandatory IEs and the data */
1843         left -= 24;
1844         if (left < 0)
1845                 return 0;
1846         len += 24;
1847
1848         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1849         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1850         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1851         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1852         frame->seq_ctrl = 0;
1853
1854         /* fill in our indirect SSID IE */
1855         /* ...next IE... */
1856
1857         left -= 2;
1858         if (left < 0)
1859                 return 0;
1860         len += 2;
1861         pos = &(frame->u.probe_req.variable[0]);
1862         *pos++ = WLAN_EID_SSID;
1863         *pos++ = 0;
1864
1865         /* fill in our direct SSID IE... */
1866         if (is_direct) {
1867                 /* ...next IE... */
1868                 left -= 2 + priv->essid_len;
1869                 if (left < 0)
1870                         return 0;
1871                 /* ... fill it in... */
1872                 *pos++ = WLAN_EID_SSID;
1873                 *pos++ = priv->essid_len;
1874                 memcpy(pos, priv->essid, priv->essid_len);
1875                 pos += priv->essid_len;
1876                 len += 2 + priv->essid_len;
1877         }
1878
1879         /* fill in supported rate */
1880         /* ...next IE... */
1881         left -= 2;
1882         if (left < 0)
1883                 return 0;
1884
1885         /* ... fill it in... */
1886         *pos++ = WLAN_EID_SUPP_RATES;
1887         *pos = 0;
1888
1889         /* exclude 60M rate */
1890         active_rates = priv->rates_mask;
1891         active_rates &= ~IWL_RATE_60M_MASK;
1892
1893         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1894
1895         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1896         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1897                         active_rate_basic, &left);
1898         active_rates &= ~ret_rates;
1899
1900         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1901                                  active_rate_basic, &left);
1902         active_rates &= ~ret_rates;
1903
1904         len += 2 + *pos;
1905         pos += (*pos) + 1;
1906         if (active_rates == 0)
1907                 goto fill_end;
1908
1909         /* fill in supported extended rate */
1910         /* ...next IE... */
1911         left -= 2;
1912         if (left < 0)
1913                 return 0;
1914         /* ... fill it in... */
1915         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1916         *pos = 0;
1917         iwl4965_supported_rate_to_ie(pos, active_rates,
1918                                  active_rate_basic, &left);
1919         if (*pos > 0)
1920                 len += 2 + *pos;
1921
1922 #ifdef CONFIG_IWL4965_HT
1923         if (is_direct && priv->is_ht_enabled) {
1924                 u8 use_wide_chan = 1;
1925
1926                 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1927                         use_wide_chan = 0;
1928                 pos += (*pos) + 1;
1929                 *pos++ = WLAN_EID_HT_CAPABILITY;
1930                 *pos++ = sizeof(struct ieee80211_ht_capability);
1931                 iwl4965_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1932                                  use_wide_chan);
1933                 len += 2 + sizeof(struct ieee80211_ht_capability);
1934         }
1935 #endif  /*CONFIG_IWL4965_HT */
1936
1937  fill_end:
1938         return (u16)len;
1939 }
1940
1941 /*
1942  * QoS  support
1943 */
1944 #ifdef CONFIG_IWL4965_QOS
1945 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1946                                        struct iwl4965_qosparam_cmd *qos)
1947 {
1948
1949         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1950                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1951 }
1952
1953 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
1954 {
1955         u16 cw_min = 15;
1956         u16 cw_max = 1023;
1957         u8 aifs = 2;
1958         u8 is_legacy = 0;
1959         unsigned long flags;
1960         int i;
1961
1962         spin_lock_irqsave(&priv->lock, flags);
1963         priv->qos_data.qos_active = 0;
1964
1965         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1966                 if (priv->qos_data.qos_enable)
1967                         priv->qos_data.qos_active = 1;
1968                 if (!(priv->active_rate & 0xfff0)) {
1969                         cw_min = 31;
1970                         is_legacy = 1;
1971                 }
1972         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1973                 if (priv->qos_data.qos_enable)
1974                         priv->qos_data.qos_active = 1;
1975         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1976                 cw_min = 31;
1977                 is_legacy = 1;
1978         }
1979
1980         if (priv->qos_data.qos_active)
1981                 aifs = 3;
1982
1983         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1984         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1985         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1986         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1987         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1988
1989         if (priv->qos_data.qos_active) {
1990                 i = 1;
1991                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1992                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1993                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1994                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1995                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1996
1997                 i = 2;
1998                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1999                         cpu_to_le16((cw_min + 1) / 2 - 1);
2000                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2001                         cpu_to_le16(cw_max);
2002                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2003                 if (is_legacy)
2004                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2005                                 cpu_to_le16(6016);
2006                 else
2007                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2008                                 cpu_to_le16(3008);
2009                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2010
2011                 i = 3;
2012                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2013                         cpu_to_le16((cw_min + 1) / 4 - 1);
2014                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2015                         cpu_to_le16((cw_max + 1) / 2 - 1);
2016                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2017                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2018                 if (is_legacy)
2019                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2020                                 cpu_to_le16(3264);
2021                 else
2022                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2023                                 cpu_to_le16(1504);
2024         } else {
2025                 for (i = 1; i < 4; i++) {
2026                         priv->qos_data.def_qos_parm.ac[i].cw_min =
2027                                 cpu_to_le16(cw_min);
2028                         priv->qos_data.def_qos_parm.ac[i].cw_max =
2029                                 cpu_to_le16(cw_max);
2030                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2031                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2032                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2033                 }
2034         }
2035         IWL_DEBUG_QOS("set QoS to default \n");
2036
2037         spin_unlock_irqrestore(&priv->lock, flags);
2038 }
2039
2040 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2041 {
2042         unsigned long flags;
2043
2044         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2045                 return;
2046
2047         if (!priv->qos_data.qos_enable)
2048                 return;
2049
2050         spin_lock_irqsave(&priv->lock, flags);
2051         priv->qos_data.def_qos_parm.qos_flags = 0;
2052
2053         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2054             !priv->qos_data.qos_cap.q_AP.txop_request)
2055                 priv->qos_data.def_qos_parm.qos_flags |=
2056                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2057         if (priv->qos_data.qos_active)
2058                 priv->qos_data.def_qos_parm.qos_flags |=
2059                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2060
2061 #ifdef CONFIG_IWL4965_HT
2062         if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
2063                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2064 #endif /* CONFIG_IWL4965_HT */
2065
2066         spin_unlock_irqrestore(&priv->lock, flags);
2067
2068         if (force || iwl4965_is_associated(priv)) {
2069                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2070                                 priv->qos_data.qos_active,
2071                                 priv->qos_data.def_qos_parm.qos_flags);
2072
2073                 iwl4965_send_qos_params_command(priv,
2074                                 &(priv->qos_data.def_qos_parm));
2075         }
2076 }
2077
2078 #endif /* CONFIG_IWL4965_QOS */
2079 /*
2080  * Power management (not Tx power!) functions
2081  */
2082 #define MSEC_TO_USEC 1024
2083
2084 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2085 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2086 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2087 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2088                                      __constant_cpu_to_le32(X1), \
2089                                      __constant_cpu_to_le32(X2), \
2090                                      __constant_cpu_to_le32(X3), \
2091                                      __constant_cpu_to_le32(X4)}
2092
2093
2094 /* default power management (not Tx power) table values */
2095 /* for tim  0-10 */
2096 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2097         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2098         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2099         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2100         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2101         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2102         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2103 };
2104
2105 /* for tim > 10 */
2106 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2107         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2108         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2109                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2110         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2111                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2112         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2113                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2114         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2115         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2116                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2117 };
2118
2119 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2120 {
2121         int rc = 0, i;
2122         struct iwl4965_power_mgr *pow_data;
2123         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2124         u16 pci_pm;
2125
2126         IWL_DEBUG_POWER("Initialize power \n");
2127
2128         pow_data = &(priv->power_data);
2129
2130         memset(pow_data, 0, sizeof(*pow_data));
2131
2132         pow_data->active_index = IWL_POWER_RANGE_0;
2133         pow_data->dtim_val = 0xffff;
2134
2135         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2136         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2137
2138         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2139         if (rc != 0)
2140                 return 0;
2141         else {
2142                 struct iwl4965_powertable_cmd *cmd;
2143
2144                 IWL_DEBUG_POWER("adjust power command flags\n");
2145
2146                 for (i = 0; i < IWL_POWER_AC; i++) {
2147                         cmd = &pow_data->pwr_range_0[i].cmd;
2148
2149                         if (pci_pm & 0x1)
2150                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2151                         else
2152                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2153                 }
2154         }
2155         return rc;
2156 }
2157
2158 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2159                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
2160 {
2161         int rc = 0, i;
2162         u8 skip;
2163         u32 max_sleep = 0;
2164         struct iwl4965_power_vec_entry *range;
2165         u8 period = 0;
2166         struct iwl4965_power_mgr *pow_data;
2167
2168         if (mode > IWL_POWER_INDEX_5) {
2169                 IWL_DEBUG_POWER("Error invalid power mode \n");
2170                 return -1;
2171         }
2172         pow_data = &(priv->power_data);
2173
2174         if (pow_data->active_index == IWL_POWER_RANGE_0)
2175                 range = &pow_data->pwr_range_0[0];
2176         else
2177                 range = &pow_data->pwr_range_1[1];
2178
2179         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2180
2181 #ifdef IWL_MAC80211_DISABLE
2182         if (priv->assoc_network != NULL) {
2183                 unsigned long flags;
2184
2185                 period = priv->assoc_network->tim.tim_period;
2186         }
2187 #endif  /*IWL_MAC80211_DISABLE */
2188         skip = range[mode].no_dtim;
2189
2190         if (period == 0) {
2191                 period = 1;
2192                 skip = 0;
2193         }
2194
2195         if (skip == 0) {
2196                 max_sleep = period;
2197                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2198         } else {
2199                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2200                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2201                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2202         }
2203
2204         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2205                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2206                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2207         }
2208
2209         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2210         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2211         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2212         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2213                         le32_to_cpu(cmd->sleep_interval[0]),
2214                         le32_to_cpu(cmd->sleep_interval[1]),
2215                         le32_to_cpu(cmd->sleep_interval[2]),
2216                         le32_to_cpu(cmd->sleep_interval[3]),
2217                         le32_to_cpu(cmd->sleep_interval[4]));
2218
2219         return rc;
2220 }
2221
2222 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2223 {
2224         u32 uninitialized_var(final_mode);
2225         int rc;
2226         struct iwl4965_powertable_cmd cmd;
2227
2228         /* If on battery, set to 3,
2229          * if plugged into AC power, set to CAM ("continuously aware mode"),
2230          * else user level */
2231         switch (mode) {
2232         case IWL_POWER_BATTERY:
2233                 final_mode = IWL_POWER_INDEX_3;
2234                 break;
2235         case IWL_POWER_AC:
2236                 final_mode = IWL_POWER_MODE_CAM;
2237                 break;
2238         default:
2239                 final_mode = mode;
2240                 break;
2241         }
2242
2243         cmd.keep_alive_beacons = 0;
2244
2245         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2246
2247         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2248
2249         if (final_mode == IWL_POWER_MODE_CAM)
2250                 clear_bit(STATUS_POWER_PMI, &priv->status);
2251         else
2252                 set_bit(STATUS_POWER_PMI, &priv->status);
2253
2254         return rc;
2255 }
2256
2257 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2258 {
2259         /* Filter incoming packets to determine if they are targeted toward
2260          * this network, discarding packets coming from ourselves */
2261         switch (priv->iw_mode) {
2262         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2263                 /* packets from our adapter are dropped (echo) */
2264                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2265                         return 0;
2266                 /* {broad,multi}cast packets to our IBSS go through */
2267                 if (is_multicast_ether_addr(header->addr1))
2268                         return !compare_ether_addr(header->addr3, priv->bssid);
2269                 /* packets to our adapter go through */
2270                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2271         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2272                 /* packets from our adapter are dropped (echo) */
2273                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2274                         return 0;
2275                 /* {broad,multi}cast packets to our BSS go through */
2276                 if (is_multicast_ether_addr(header->addr1))
2277                         return !compare_ether_addr(header->addr2, priv->bssid);
2278                 /* packets to our adapter go through */
2279                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2280         }
2281
2282         return 1;
2283 }
2284
2285 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2286
2287 static const char *iwl4965_get_tx_fail_reason(u32 status)
2288 {
2289         switch (status & TX_STATUS_MSK) {
2290         case TX_STATUS_SUCCESS:
2291                 return "SUCCESS";
2292                 TX_STATUS_ENTRY(SHORT_LIMIT);
2293                 TX_STATUS_ENTRY(LONG_LIMIT);
2294                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2295                 TX_STATUS_ENTRY(MGMNT_ABORT);
2296                 TX_STATUS_ENTRY(NEXT_FRAG);
2297                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2298                 TX_STATUS_ENTRY(DEST_PS);
2299                 TX_STATUS_ENTRY(ABORTED);
2300                 TX_STATUS_ENTRY(BT_RETRY);
2301                 TX_STATUS_ENTRY(STA_INVALID);
2302                 TX_STATUS_ENTRY(FRAG_DROPPED);
2303                 TX_STATUS_ENTRY(TID_DISABLE);
2304                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2305                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2306                 TX_STATUS_ENTRY(TX_LOCKED);
2307                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2308         }
2309
2310         return "UNKNOWN";
2311 }
2312
2313 /**
2314  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2315  *
2316  * NOTE: priv->mutex is not required before calling this function
2317  */
2318 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2319 {
2320         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2321                 clear_bit(STATUS_SCANNING, &priv->status);
2322                 return 0;
2323         }
2324
2325         if (test_bit(STATUS_SCANNING, &priv->status)) {
2326                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2327                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2328                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2329                         queue_work(priv->workqueue, &priv->abort_scan);
2330
2331                 } else
2332                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2333
2334                 return test_bit(STATUS_SCANNING, &priv->status);
2335         }
2336
2337         return 0;
2338 }
2339
2340 /**
2341  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2342  * @ms: amount of time to wait (in milliseconds) for scan to abort
2343  *
2344  * NOTE: priv->mutex must be held before calling this function
2345  */
2346 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2347 {
2348         unsigned long now = jiffies;
2349         int ret;
2350
2351         ret = iwl4965_scan_cancel(priv);
2352         if (ret && ms) {
2353                 mutex_unlock(&priv->mutex);
2354                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2355                                 test_bit(STATUS_SCANNING, &priv->status))
2356                         msleep(1);
2357                 mutex_lock(&priv->mutex);
2358
2359                 return test_bit(STATUS_SCANNING, &priv->status);
2360         }
2361
2362         return ret;
2363 }
2364
2365 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2366 {
2367         /* Reset ieee stats */
2368
2369         /* We don't reset the net_device_stats (ieee->stats) on
2370          * re-association */
2371
2372         priv->last_seq_num = -1;
2373         priv->last_frag_num = -1;
2374         priv->last_packet_time = 0;
2375
2376         iwl4965_scan_cancel(priv);
2377 }
2378
2379 #define MAX_UCODE_BEACON_INTERVAL       4096
2380 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2381
2382 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2383 {
2384         u16 new_val = 0;
2385         u16 beacon_factor = 0;
2386
2387         beacon_factor =
2388             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2389                 / MAX_UCODE_BEACON_INTERVAL;
2390         new_val = beacon_val / beacon_factor;
2391
2392         return cpu_to_le16(new_val);
2393 }
2394
2395 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2396 {
2397         u64 interval_tm_unit;
2398         u64 tsf, result;
2399         unsigned long flags;
2400         struct ieee80211_conf *conf = NULL;
2401         u16 beacon_int = 0;
2402
2403         conf = ieee80211_get_hw_conf(priv->hw);
2404
2405         spin_lock_irqsave(&priv->lock, flags);
2406         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2407         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2408
2409         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2410
2411         tsf = priv->timestamp1;
2412         tsf = ((tsf << 32) | priv->timestamp0);
2413
2414         beacon_int = priv->beacon_int;
2415         spin_unlock_irqrestore(&priv->lock, flags);
2416
2417         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2418                 if (beacon_int == 0) {
2419                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2420                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2421                 } else {
2422                         priv->rxon_timing.beacon_interval =
2423                                 cpu_to_le16(beacon_int);
2424                         priv->rxon_timing.beacon_interval =
2425                             iwl4965_adjust_beacon_interval(
2426                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2427                 }
2428
2429                 priv->rxon_timing.atim_window = 0;
2430         } else {
2431                 priv->rxon_timing.beacon_interval =
2432                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2433                 /* TODO: we need to get atim_window from upper stack
2434                  * for now we set to 0 */
2435                 priv->rxon_timing.atim_window = 0;
2436         }
2437
2438         interval_tm_unit =
2439                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2440         result = do_div(tsf, interval_tm_unit);
2441         priv->rxon_timing.beacon_init_val =
2442             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2443
2444         IWL_DEBUG_ASSOC
2445             ("beacon interval %d beacon timer %d beacon tim %d\n",
2446                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2447                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2448                 le16_to_cpu(priv->rxon_timing.atim_window));
2449 }
2450
2451 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2452 {
2453         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2454                 IWL_ERROR("APs don't scan.\n");
2455                 return 0;
2456         }
2457
2458         if (!iwl4965_is_ready_rf(priv)) {
2459                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2460                 return -EIO;
2461         }
2462
2463         if (test_bit(STATUS_SCANNING, &priv->status)) {
2464                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2465                 return -EAGAIN;
2466         }
2467
2468         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2469                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2470                                "Queuing.\n");
2471                 return -EAGAIN;
2472         }
2473
2474         IWL_DEBUG_INFO("Starting scan...\n");
2475         priv->scan_bands = 2;
2476         set_bit(STATUS_SCANNING, &priv->status);
2477         priv->scan_start = jiffies;
2478         priv->scan_pass_start = priv->scan_start;
2479
2480         queue_work(priv->workqueue, &priv->request_scan);
2481
2482         return 0;
2483 }
2484
2485 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2486 {
2487         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2488
2489         if (hw_decrypt)
2490                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2491         else
2492                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2493
2494         return 0;
2495 }
2496
2497 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2498 {
2499         if (phymode == MODE_IEEE80211A) {
2500                 priv->staging_rxon.flags &=
2501                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2502                       | RXON_FLG_CCK_MSK);
2503                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2504         } else {
2505                 /* Copied from iwl4965_bg_post_associate() */
2506                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2507                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2508                 else
2509                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2510
2511                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2512                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2513
2514                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2515                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2516                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2517         }
2518 }
2519
2520 /*
2521  * initialize rxon structure with default values from eeprom
2522  */
2523 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2524 {
2525         const struct iwl4965_channel_info *ch_info;
2526
2527         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2528
2529         switch (priv->iw_mode) {
2530         case IEEE80211_IF_TYPE_AP:
2531                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2532                 break;
2533
2534         case IEEE80211_IF_TYPE_STA:
2535                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2536                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2537                 break;
2538
2539         case IEEE80211_IF_TYPE_IBSS:
2540                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2541                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2542                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2543                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2544                 break;
2545
2546         case IEEE80211_IF_TYPE_MNTR:
2547                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2548                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2549                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2550                 break;
2551         }
2552
2553 #if 0
2554         /* TODO:  Figure out when short_preamble would be set and cache from
2555          * that */
2556         if (!hw_to_local(priv->hw)->short_preamble)
2557                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2558         else
2559                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2560 #endif
2561
2562         ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2563                                        le16_to_cpu(priv->staging_rxon.channel));
2564
2565         if (!ch_info)
2566                 ch_info = &priv->channel_info[0];
2567
2568         /*
2569          * in some case A channels are all non IBSS
2570          * in this case force B/G channel
2571          */
2572         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2573             !(is_channel_ibss(ch_info)))
2574                 ch_info = &priv->channel_info[0];
2575
2576         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2577         if (is_channel_a_band(ch_info))
2578                 priv->phymode = MODE_IEEE80211A;
2579         else
2580                 priv->phymode = MODE_IEEE80211G;
2581
2582         iwl4965_set_flags_for_phymode(priv, priv->phymode);
2583
2584         priv->staging_rxon.ofdm_basic_rates =
2585             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2586         priv->staging_rxon.cck_basic_rates =
2587             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2588
2589         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2590                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2591         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2592         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2593         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2594         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2595         iwl4965_set_rxon_chain(priv);
2596 }
2597
2598 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2599 {
2600         if (!iwl4965_is_ready_rf(priv))
2601                 return -EAGAIN;
2602
2603         if (mode == IEEE80211_IF_TYPE_IBSS) {
2604                 const struct iwl4965_channel_info *ch_info;
2605
2606                 ch_info = iwl4965_get_channel_info(priv,
2607                         priv->phymode,
2608                         le16_to_cpu(priv->staging_rxon.channel));
2609
2610                 if (!ch_info || !is_channel_ibss(ch_info)) {
2611                         IWL_ERROR("channel %d not IBSS channel\n",
2612                                   le16_to_cpu(priv->staging_rxon.channel));
2613                         return -EINVAL;
2614                 }
2615         }
2616
2617         cancel_delayed_work(&priv->scan_check);
2618         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2619                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2620                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2621                 return -EAGAIN;
2622         }
2623
2624         priv->iw_mode = mode;
2625
2626         iwl4965_connection_init_rx_config(priv);
2627         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2628
2629         iwl4965_clear_stations_table(priv);
2630
2631         iwl4965_commit_rxon(priv);
2632
2633         return 0;
2634 }
2635
2636 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2637                                       struct ieee80211_tx_control *ctl,
2638                                       struct iwl4965_cmd *cmd,
2639                                       struct sk_buff *skb_frag,
2640                                       int last_frag)
2641 {
2642         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2643
2644         switch (keyinfo->alg) {
2645         case ALG_CCMP:
2646                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2647                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2648                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2649                 break;
2650
2651         case ALG_TKIP:
2652 #if 0
2653                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2654
2655                 if (last_frag)
2656                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2657                                8);
2658                 else
2659                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2660 #endif
2661                 break;
2662
2663         case ALG_WEP:
2664                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2665                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2666
2667                 if (keyinfo->keylen == 13)
2668                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2669
2670                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2671
2672                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2673                              "with key %d\n", ctl->key_idx);
2674                 break;
2675
2676         default:
2677                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2678                 break;
2679         }
2680 }
2681
2682 /*
2683  * handle build REPLY_TX command notification.
2684  */
2685 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2686                                   struct iwl4965_cmd *cmd,
2687                                   struct ieee80211_tx_control *ctrl,
2688                                   struct ieee80211_hdr *hdr,
2689                                   int is_unicast, u8 std_id)
2690 {
2691         __le16 *qc;
2692         u16 fc = le16_to_cpu(hdr->frame_control);
2693         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2694
2695         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2696         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2697                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2698                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2699                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2700                 if (ieee80211_is_probe_response(fc) &&
2701                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2702                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2703         } else {
2704                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2705                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2706         }
2707
2708         cmd->cmd.tx.sta_id = std_id;
2709         if (ieee80211_get_morefrag(hdr))
2710                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2711
2712         qc = ieee80211_get_qos_ctrl(hdr);
2713         if (qc) {
2714                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2715                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2716         } else
2717                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2718
2719         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2720                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2721                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2722         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2723                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2724                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2725         }
2726
2727         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2728                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2729
2730         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2731         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2732                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2733                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2734                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2735                 else
2736                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2737         } else
2738                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2739
2740         cmd->cmd.tx.driver_txop = 0;
2741         cmd->cmd.tx.tx_flags = tx_flags;
2742         cmd->cmd.tx.next_frame_len = 0;
2743 }
2744
2745 static int iwl4965_get_sta_id(struct iwl4965_priv *priv, struct ieee80211_hdr *hdr)
2746 {
2747         int sta_id;
2748         u16 fc = le16_to_cpu(hdr->frame_control);
2749         DECLARE_MAC_BUF(mac);
2750
2751         /* If this frame is broadcast or not data then use the broadcast
2752          * station id */
2753         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2754             is_multicast_ether_addr(hdr->addr1))
2755                 return priv->hw_setting.bcast_sta_id;
2756
2757         switch (priv->iw_mode) {
2758
2759         /* If this frame is part of a BSS network (we're a station), then
2760          * we use the AP's station id */
2761         case IEEE80211_IF_TYPE_STA:
2762                 return IWL_AP_ID;
2763
2764         /* If we are an AP, then find the station, or use BCAST */
2765         case IEEE80211_IF_TYPE_AP:
2766                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2767                 if (sta_id != IWL_INVALID_STATION)
2768                         return sta_id;
2769                 return priv->hw_setting.bcast_sta_id;
2770
2771         /* If this frame is part of a IBSS network, then we use the
2772          * target specific station id */
2773         case IEEE80211_IF_TYPE_IBSS:
2774                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2775                 if (sta_id != IWL_INVALID_STATION)
2776                         return sta_id;
2777
2778                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1, 0, CMD_ASYNC);
2779
2780                 if (sta_id != IWL_INVALID_STATION)
2781                         return sta_id;
2782
2783                 IWL_DEBUG_DROP("Station %s not in station map. "
2784                                "Defaulting to broadcast...\n",
2785                                print_mac(mac, hdr->addr1));
2786                 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2787                 return priv->hw_setting.bcast_sta_id;
2788
2789         default:
2790                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2791                 return priv->hw_setting.bcast_sta_id;
2792         }
2793 }
2794
2795 /*
2796  * start REPLY_TX command process
2797  */
2798 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2799                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2800 {
2801         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2802         struct iwl4965_tfd_frame *tfd;
2803         u32 *control_flags;
2804         int txq_id = ctl->queue;
2805         struct iwl4965_tx_queue *txq = NULL;
2806         struct iwl4965_queue *q = NULL;
2807         dma_addr_t phys_addr;
2808         dma_addr_t txcmd_phys;
2809         struct iwl4965_cmd *out_cmd = NULL;
2810         u16 len, idx, len_org;
2811         u8 id, hdr_len, unicast;
2812         u8 sta_id;
2813         u16 seq_number = 0;
2814         u16 fc;
2815         __le16 *qc;
2816         u8 wait_write_ptr = 0;
2817         unsigned long flags;
2818         int rc;
2819
2820         spin_lock_irqsave(&priv->lock, flags);
2821         if (iwl4965_is_rfkill(priv)) {
2822                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2823                 goto drop_unlock;
2824         }
2825
2826         if (!priv->interface_id) {
2827                 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2828                 goto drop_unlock;
2829         }
2830
2831         if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2832                 IWL_ERROR("ERROR: No TX rate available.\n");
2833                 goto drop_unlock;
2834         }
2835
2836         unicast = !is_multicast_ether_addr(hdr->addr1);
2837         id = 0;
2838
2839         fc = le16_to_cpu(hdr->frame_control);
2840
2841 #ifdef CONFIG_IWL4965_DEBUG
2842         if (ieee80211_is_auth(fc))
2843                 IWL_DEBUG_TX("Sending AUTH frame\n");
2844         else if (ieee80211_is_assoc_request(fc))
2845                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2846         else if (ieee80211_is_reassoc_request(fc))
2847                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2848 #endif
2849
2850         if (!iwl4965_is_associated(priv) &&
2851             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2852                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2853                 goto drop_unlock;
2854         }
2855
2856         spin_unlock_irqrestore(&priv->lock, flags);
2857
2858         hdr_len = ieee80211_get_hdrlen(fc);
2859         sta_id = iwl4965_get_sta_id(priv, hdr);
2860         if (sta_id == IWL_INVALID_STATION) {
2861                 DECLARE_MAC_BUF(mac);
2862
2863                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2864                                print_mac(mac, hdr->addr1));
2865                 goto drop;
2866         }
2867
2868         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2869
2870         qc = ieee80211_get_qos_ctrl(hdr);
2871         if (qc) {
2872                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2873                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2874                                 IEEE80211_SCTL_SEQ;
2875                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2876                         (hdr->seq_ctrl &
2877                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2878                 seq_number += 0x10;
2879 #ifdef CONFIG_IWL4965_HT
2880 #ifdef CONFIG_IWL4965_HT_AGG
2881                 /* aggregation is on for this <sta,tid> */
2882                 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2883                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2884 #endif /* CONFIG_IWL4965_HT_AGG */
2885 #endif /* CONFIG_IWL4965_HT */
2886         }
2887         txq = &priv->txq[txq_id];
2888         q = &txq->q;
2889
2890         spin_lock_irqsave(&priv->lock, flags);
2891
2892         tfd = &txq->bd[q->write_ptr];
2893         memset(tfd, 0, sizeof(*tfd));
2894         control_flags = (u32 *) tfd;
2895         idx = get_cmd_index(q, q->write_ptr, 0);
2896
2897         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2898         txq->txb[q->write_ptr].skb[0] = skb;
2899         memcpy(&(txq->txb[q->write_ptr].status.control),
2900                ctl, sizeof(struct ieee80211_tx_control));
2901         out_cmd = &txq->cmd[idx];
2902         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2903         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2904         out_cmd->hdr.cmd = REPLY_TX;
2905         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2906                                 INDEX_TO_SEQ(q->write_ptr)));
2907         /* copy frags header */
2908         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2909
2910         /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2911         len = priv->hw_setting.tx_cmd_len +
2912                 sizeof(struct iwl4965_cmd_header) + hdr_len;
2913
2914         len_org = len;
2915         len = (len + 3) & ~3;
2916
2917         if (len_org != len)
2918                 len_org = 1;
2919         else
2920                 len_org = 0;
2921
2922         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
2923                      offsetof(struct iwl4965_cmd, hdr);
2924
2925         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2926
2927         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2928                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2929
2930         /* 802.11 null functions have no payload... */
2931         len = skb->len - hdr_len;
2932         if (len) {
2933                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2934                                            len, PCI_DMA_TODEVICE);
2935                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2936         }
2937
2938         if (len_org)
2939                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2940
2941         len = (u16)skb->len;
2942         out_cmd->cmd.tx.len = cpu_to_le16(len);
2943
2944         /* TODO need this for burst mode later on */
2945         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2946
2947         /* set is_hcca to 0; it probably will never be implemented */
2948         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2949
2950         iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
2951                        hdr, hdr_len, ctl, NULL);
2952
2953         if (!ieee80211_get_morefrag(hdr)) {
2954                 txq->need_update = 1;
2955                 if (qc) {
2956                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2957                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2958                 }
2959         } else {
2960                 wait_write_ptr = 1;
2961                 txq->need_update = 0;
2962         }
2963
2964         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2965                            sizeof(out_cmd->cmd.tx));
2966
2967         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2968                            ieee80211_get_hdrlen(fc));
2969
2970         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2971
2972         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
2973         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2974         spin_unlock_irqrestore(&priv->lock, flags);
2975
2976         if (rc)
2977                 return rc;
2978
2979         if ((iwl4965_queue_space(q) < q->high_mark)
2980             && priv->mac80211_registered) {
2981                 if (wait_write_ptr) {
2982                         spin_lock_irqsave(&priv->lock, flags);
2983                         txq->need_update = 1;
2984                         iwl4965_tx_queue_update_write_ptr(priv, txq);
2985                         spin_unlock_irqrestore(&priv->lock, flags);
2986                 }
2987
2988                 ieee80211_stop_queue(priv->hw, ctl->queue);
2989         }
2990
2991         return 0;
2992
2993 drop_unlock:
2994         spin_unlock_irqrestore(&priv->lock, flags);
2995 drop:
2996         return -1;
2997 }
2998
2999 static void iwl4965_set_rate(struct iwl4965_priv *priv)
3000 {
3001         const struct ieee80211_hw_mode *hw = NULL;
3002         struct ieee80211_rate *rate;
3003         int i;
3004
3005         hw = iwl4965_get_hw_mode(priv, priv->phymode);
3006         if (!hw) {
3007                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3008                 return;
3009         }
3010
3011         priv->active_rate = 0;
3012         priv->active_rate_basic = 0;
3013
3014         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3015                        hw->mode == MODE_IEEE80211A ?
3016                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3017
3018         for (i = 0; i < hw->num_rates; i++) {
3019                 rate = &(hw->rates[i]);
3020                 if ((rate->val < IWL_RATE_COUNT) &&
3021                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3022                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3023                                        rate->val, iwl4965_rates[rate->val].plcp,
3024                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3025                                        "*" : "");
3026                         priv->active_rate |= (1 << rate->val);
3027                         if (rate->flags & IEEE80211_RATE_BASIC)
3028                                 priv->active_rate_basic |= (1 << rate->val);
3029                 } else
3030                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3031                                        rate->val, iwl4965_rates[rate->val].plcp);
3032         }
3033
3034         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3035                        priv->active_rate, priv->active_rate_basic);
3036
3037         /*
3038          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3039          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3040          * OFDM
3041          */
3042         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3043                 priv->staging_rxon.cck_basic_rates =
3044                     ((priv->active_rate_basic &
3045                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3046         else
3047                 priv->staging_rxon.cck_basic_rates =
3048                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3049
3050         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3051                 priv->staging_rxon.ofdm_basic_rates =
3052                     ((priv->active_rate_basic &
3053                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3054                       IWL_FIRST_OFDM_RATE) & 0xFF;
3055         else
3056                 priv->staging_rxon.ofdm_basic_rates =
3057                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3058 }
3059
3060 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3061 {
3062         unsigned long flags;
3063
3064         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3065                 return;
3066
3067         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3068                           disable_radio ? "OFF" : "ON");
3069
3070         if (disable_radio) {
3071                 iwl4965_scan_cancel(priv);
3072                 /* FIXME: This is a workaround for AP */
3073                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3074                         spin_lock_irqsave(&priv->lock, flags);
3075                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3076                                     CSR_UCODE_SW_BIT_RFKILL);
3077                         spin_unlock_irqrestore(&priv->lock, flags);
3078                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3079                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3080                 }
3081                 return;
3082         }
3083
3084         spin_lock_irqsave(&priv->lock, flags);
3085         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3086
3087         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3088         spin_unlock_irqrestore(&priv->lock, flags);
3089
3090         /* wake up ucode */
3091         msleep(10);
3092
3093         spin_lock_irqsave(&priv->lock, flags);
3094         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3095         if (!iwl4965_grab_nic_access(priv))
3096                 iwl4965_release_nic_access(priv);
3097         spin_unlock_irqrestore(&priv->lock, flags);
3098
3099         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3100                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3101                                   "disabled by HW switch\n");
3102                 return;
3103         }
3104
3105         queue_work(priv->workqueue, &priv->restart);
3106         return;
3107 }
3108
3109 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3110                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3111 {
3112         u16 fc =
3113             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3114
3115         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3116                 return;
3117
3118         if (!(fc & IEEE80211_FCTL_PROTECTED))
3119                 return;
3120
3121         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3122         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3123         case RX_RES_STATUS_SEC_TYPE_TKIP:
3124                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3125                     RX_RES_STATUS_BAD_ICV_MIC)
3126                         stats->flag |= RX_FLAG_MMIC_ERROR;
3127         case RX_RES_STATUS_SEC_TYPE_WEP:
3128         case RX_RES_STATUS_SEC_TYPE_CCMP:
3129                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3130                     RX_RES_STATUS_DECRYPT_OK) {
3131                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3132                         stats->flag |= RX_FLAG_DECRYPTED;
3133                 }
3134                 break;
3135
3136         default:
3137                 break;
3138         }
3139 }
3140
3141 void iwl4965_handle_data_packet_monitor(struct iwl4965_priv *priv,
3142                                     struct iwl4965_rx_mem_buffer *rxb,
3143                                     void *data, short len,
3144                                     struct ieee80211_rx_status *stats,
3145                                     u16 phy_flags)
3146 {
3147         struct iwl4965_rt_rx_hdr *iwl4965_rt;
3148
3149         /* First cache any information we need before we overwrite
3150          * the information provided in the skb from the hardware */
3151         s8 signal = stats->ssi;
3152         s8 noise = 0;
3153         int rate = stats->rate;
3154         u64 tsf = stats->mactime;
3155         __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3156
3157         /* We received data from the HW, so stop the watchdog */
3158         if (len > IWL_RX_BUF_SIZE - sizeof(*iwl4965_rt)) {
3159                 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3160                 return;
3161         }
3162
3163         /* copy the frame data to write after where the radiotap header goes */
3164         iwl4965_rt = (void *)rxb->skb->data;
3165         memmove(iwl4965_rt->payload, data, len);
3166
3167         iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3168         iwl4965_rt->rt_hdr.it_pad = 0; /* always good to zero */
3169
3170         /* total header + data */
3171         iwl4965_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl4965_rt));
3172
3173         /* Set the size of the skb to the size of the frame */
3174         skb_put(rxb->skb, sizeof(*iwl4965_rt) + len);
3175
3176         /* Big bitfield of all the fields we provide in radiotap */
3177         iwl4965_rt->rt_hdr.it_present =
3178             cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3179                         (1 << IEEE80211_RADIOTAP_FLAGS) |
3180                         (1 << IEEE80211_RADIOTAP_RATE) |
3181                         (1 << IEEE80211_RADIOTAP_CHANNEL) |
3182                         (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3183                         (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3184                         (1 << IEEE80211_RADIOTAP_ANTENNA));
3185
3186         /* Zero the flags, we'll add to them as we go */
3187         iwl4965_rt->rt_flags = 0;
3188
3189         iwl4965_rt->rt_tsf = cpu_to_le64(tsf);
3190
3191         /* Convert to dBm */
3192         iwl4965_rt->rt_dbmsignal = signal;
3193         iwl4965_rt->rt_dbmnoise = noise;
3194
3195         /* Convert the channel frequency and set the flags */
3196         iwl4965_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3197         if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3198                 iwl4965_rt->rt_chbitmask =
3199                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3200         else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3201                 iwl4965_rt->rt_chbitmask =
3202                     cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3203         else    /* 802.11g */
3204                 iwl4965_rt->rt_chbitmask =
3205                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3206
3207         rate = iwl4965_rate_index_from_plcp(rate);
3208         if (rate == -1)
3209                 iwl4965_rt->rt_rate = 0;
3210         else
3211                 iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee;
3212
3213         /* antenna number */
3214         iwl4965_rt->rt_antenna =
3215                 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3216
3217         /* set the preamble flag if we have it */
3218         if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3219                 iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3220
3221         IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3222
3223         stats->flag |= RX_FLAG_RADIOTAP;
3224         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3225         rxb->skb = NULL;
3226 }
3227
3228
3229 #define IWL_PACKET_RETRY_TIME HZ
3230
3231 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3232 {
3233         u16 sc = le16_to_cpu(header->seq_ctrl);
3234         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3235         u16 frag = sc & IEEE80211_SCTL_FRAG;
3236         u16 *last_seq, *last_frag;
3237         unsigned long *last_time;
3238
3239         switch (priv->iw_mode) {
3240         case IEEE80211_IF_TYPE_IBSS:{
3241                 struct list_head *p;
3242                 struct iwl4965_ibss_seq *entry = NULL;
3243                 u8 *mac = header->addr2;
3244                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3245
3246                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3247                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
3248                         if (!compare_ether_addr(entry->mac, mac))
3249                                 break;
3250                 }
3251                 if (p == &priv->ibss_mac_hash[index]) {
3252                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3253                         if (!entry) {
3254                                 IWL_ERROR("Cannot malloc new mac entry\n");
3255                                 return 0;
3256                         }
3257                         memcpy(entry->mac, mac, ETH_ALEN);
3258                         entry->seq_num = seq;
3259                         entry->frag_num = frag;
3260                         entry->packet_time = jiffies;
3261                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3262                         return 0;
3263                 }
3264                 last_seq = &entry->seq_num;
3265                 last_frag = &entry->frag_num;
3266                 last_time = &entry->packet_time;
3267                 break;
3268         }
3269         case IEEE80211_IF_TYPE_STA:
3270                 last_seq = &priv->last_seq_num;
3271                 last_frag = &priv->last_frag_num;
3272                 last_time = &priv->last_packet_time;
3273                 break;
3274         default:
3275                 return 0;
3276         }
3277         if ((*last_seq == seq) &&
3278             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3279                 if (*last_frag == frag)
3280                         goto drop;
3281                 if (*last_frag + 1 != frag)
3282                         /* out-of-order fragment */
3283                         goto drop;
3284         } else
3285                 *last_seq = seq;
3286
3287         *last_frag = frag;
3288         *last_time = jiffies;
3289         return 0;
3290
3291  drop:
3292         return 1;
3293 }
3294
3295 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3296
3297 #include "iwl-spectrum.h"
3298
3299 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3300 #define BEACON_TIME_MASK_HIGH   0xFF000000
3301 #define TIME_UNIT               1024
3302
3303 /*
3304  * extended beacon time format
3305  * time in usec will be changed into a 32-bit value in 8:24 format
3306  * the high 1 byte is the beacon counts
3307  * the lower 3 bytes is the time in usec within one beacon interval
3308  */
3309
3310 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3311 {
3312         u32 quot;
3313         u32 rem;
3314         u32 interval = beacon_interval * 1024;
3315
3316         if (!interval || !usec)
3317                 return 0;
3318
3319         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3320         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3321
3322         return (quot << 24) + rem;
3323 }
3324
3325 /* base is usually what we get from ucode with each received frame,
3326  * the same as HW timer counter counting down
3327  */
3328
3329 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3330 {
3331         u32 base_low = base & BEACON_TIME_MASK_LOW;
3332         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3333         u32 interval = beacon_interval * TIME_UNIT;
3334         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3335             (addon & BEACON_TIME_MASK_HIGH);
3336
3337         if (base_low > addon_low)
3338                 res += base_low - addon_low;
3339         else if (base_low < addon_low) {
3340                 res += interval + base_low - addon_low;
3341                 res += (1 << 24);
3342         } else
3343                 res += (1 << 24);
3344
3345         return cpu_to_le32(res);
3346 }
3347
3348 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3349                                struct ieee80211_measurement_params *params,
3350                                u8 type)
3351 {
3352         struct iwl4965_spectrum_cmd spectrum;
3353         struct iwl4965_rx_packet *res;
3354         struct iwl4965_host_cmd cmd = {
3355                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3356                 .data = (void *)&spectrum,
3357                 .meta.flags = CMD_WANT_SKB,
3358         };
3359         u32 add_time = le64_to_cpu(params->start_time);
3360         int rc;
3361         int spectrum_resp_status;
3362         int duration = le16_to_cpu(params->duration);
3363
3364         if (iwl4965_is_associated(priv))
3365                 add_time =
3366                     iwl4965_usecs_to_beacons(
3367                         le64_to_cpu(params->start_time) - priv->last_tsf,
3368                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3369
3370         memset(&spectrum, 0, sizeof(spectrum));
3371
3372         spectrum.channel_count = cpu_to_le16(1);
3373         spectrum.flags =
3374             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3375         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3376         cmd.len = sizeof(spectrum);
3377         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3378
3379         if (iwl4965_is_associated(priv))
3380                 spectrum.start_time =
3381                     iwl4965_add_beacon_time(priv->last_beacon_time,
3382                                 add_time,
3383                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3384         else
3385                 spectrum.start_time = 0;
3386
3387         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3388         spectrum.channels[0].channel = params->channel;
3389         spectrum.channels[0].type = type;
3390         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3391                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3392                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3393
3394         rc = iwl4965_send_cmd_sync(priv, &cmd);
3395         if (rc)
3396                 return rc;
3397
3398         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3399         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3400                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3401                 rc = -EIO;
3402         }
3403
3404         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3405         switch (spectrum_resp_status) {
3406         case 0:         /* Command will be handled */
3407                 if (res->u.spectrum.id != 0xff) {
3408                         IWL_DEBUG_INFO
3409                             ("Replaced existing measurement: %d\n",
3410                              res->u.spectrum.id);
3411                         priv->measurement_status &= ~MEASUREMENT_READY;
3412                 }
3413                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3414                 rc = 0;
3415                 break;
3416
3417         case 1:         /* Command will not be handled */
3418                 rc = -EAGAIN;
3419                 break;
3420         }
3421
3422         dev_kfree_skb_any(cmd.meta.u.skb);
3423
3424         return rc;
3425 }
3426 #endif
3427
3428 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3429                                  struct iwl4965_tx_info *tx_sta)
3430 {
3431
3432         tx_sta->status.ack_signal = 0;
3433         tx_sta->status.excessive_retries = 0;
3434         tx_sta->status.queue_length = 0;
3435         tx_sta->status.queue_number = 0;
3436
3437         if (in_interrupt())
3438                 ieee80211_tx_status_irqsafe(priv->hw,
3439                                             tx_sta->skb[0], &(tx_sta->status));
3440         else
3441                 ieee80211_tx_status(priv->hw,
3442                                     tx_sta->skb[0], &(tx_sta->status));
3443
3444         tx_sta->skb[0] = NULL;
3445 }
3446
3447 /**
3448  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3449  *
3450  * When FW advances 'R' index, all entries between old and
3451  * new 'R' index need to be reclaimed. As result, some free space
3452  * forms. If there is enough free space (> low mark), wake Tx queue.
3453  */
3454 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3455 {
3456         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3457         struct iwl4965_queue *q = &txq->q;
3458         int nfreed = 0;
3459
3460         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3461                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3462                           "is out of range [0-%d] %d %d.\n", txq_id,
3463                           index, q->n_bd, q->write_ptr, q->read_ptr);
3464                 return 0;
3465         }
3466
3467         for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3468                 q->read_ptr != index;
3469                 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3470                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3471                         iwl4965_txstatus_to_ieee(priv,
3472                                         &(txq->txb[txq->q.read_ptr]));
3473                         iwl4965_hw_txq_free_tfd(priv, txq);
3474                 } else if (nfreed > 1) {
3475                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3476                                         q->write_ptr, q->read_ptr);
3477                         queue_work(priv->workqueue, &priv->restart);
3478                 }
3479                 nfreed++;
3480         }
3481
3482         if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3483                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3484                         priv->mac80211_registered)
3485                 ieee80211_wake_queue(priv->hw, txq_id);
3486
3487
3488         return nfreed;
3489 }
3490
3491 static int iwl4965_is_tx_success(u32 status)
3492 {
3493         status &= TX_STATUS_MSK;
3494         return (status == TX_STATUS_SUCCESS)
3495             || (status == TX_STATUS_DIRECT_DONE);
3496 }
3497
3498 /******************************************************************************
3499  *
3500  * Generic RX handler implementations
3501  *
3502  ******************************************************************************/
3503 #ifdef CONFIG_IWL4965_HT
3504 #ifdef CONFIG_IWL4965_HT_AGG
3505
3506 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3507                                     struct ieee80211_hdr *hdr)
3508 {
3509         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3510                 return IWL_AP_ID;
3511         else {
3512                 u8 *da = ieee80211_get_DA(hdr);
3513                 return iwl4965_hw_find_station(priv, da);
3514         }
3515 }
3516
3517 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3518         struct iwl4965_priv *priv, int txq_id, int idx)
3519 {
3520         if (priv->txq[txq_id].txb[idx].skb[0])
3521                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3522                                 txb[idx].skb[0]->data;
3523         return NULL;
3524 }
3525
3526 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3527 {
3528         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3529                                 tx_resp->frame_count);
3530         return le32_to_cpu(*scd_ssn) & MAX_SN;
3531
3532 }
3533 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3534                                       struct iwl4965_ht_agg *agg,
3535                                       struct iwl4965_tx_resp *tx_resp,
3536                                       u16 start_idx)
3537 {
3538         u32 status;
3539         __le32 *frame_status = &tx_resp->status;
3540         struct ieee80211_tx_status *tx_status = NULL;
3541         struct ieee80211_hdr *hdr = NULL;
3542         int i, sh;
3543         int txq_id, idx;
3544         u16 seq;
3545
3546         if (agg->wait_for_ba)
3547                 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3548
3549         agg->frame_count = tx_resp->frame_count;
3550         agg->start_idx = start_idx;
3551         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3552         agg->bitmap0 = agg->bitmap1 = 0;
3553
3554         if (agg->frame_count == 1) {
3555                 struct iwl4965_tx_queue *txq ;
3556                 status = le32_to_cpu(frame_status[0]);
3557
3558                 txq_id = agg->txq_id;
3559                 txq = &priv->txq[txq_id];
3560                 /* FIXME: code repetition */
3561                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3562                                    agg->frame_count, agg->start_idx);
3563
3564                 tx_status = &(priv->txq[txq_id].txb[txq->q.read_ptr].status);
3565                 tx_status->retry_count = tx_resp->failure_frame;
3566                 tx_status->queue_number = status & 0xff;
3567                 tx_status->queue_length = tx_resp->bt_kill_count;
3568                 tx_status->queue_length |= tx_resp->failure_rts;
3569
3570                 tx_status->flags = iwl4965_is_tx_success(status)?
3571                         IEEE80211_TX_STATUS_ACK : 0;
3572                 tx_status->control.tx_rate =
3573                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3574                 /* FIXME: code repetition end */
3575
3576                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3577                                     status & 0xff, tx_resp->failure_frame);
3578                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3579                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3580
3581                 agg->wait_for_ba = 0;
3582         } else {
3583                 u64 bitmap = 0;
3584                 int start = agg->start_idx;
3585
3586                 for (i = 0; i < agg->frame_count; i++) {
3587                         u16 sc;
3588                         status = le32_to_cpu(frame_status[i]);
3589                         seq  = status >> 16;
3590                         idx = SEQ_TO_INDEX(seq);
3591                         txq_id = SEQ_TO_QUEUE(seq);
3592
3593                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3594                                       AGG_TX_STATE_ABORT_MSK))
3595                                 continue;
3596
3597                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3598                                            agg->frame_count, txq_id, idx);
3599
3600                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3601
3602                         sc = le16_to_cpu(hdr->seq_ctrl);
3603                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3604                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3605                                           " idx=%d, seq_idx=%d, seq=%d\n",
3606                                           idx, SEQ_TO_SN(sc),
3607                                           hdr->seq_ctrl);
3608                                 return -1;
3609                         }
3610
3611                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3612                                            i, idx, SEQ_TO_SN(sc));
3613
3614                         sh = idx - start;
3615                         if (sh > 64) {
3616                                 sh = (start - idx) + 0xff;
3617                                 bitmap = bitmap << sh;
3618                                 sh = 0;
3619                                 start = idx;
3620                         } else if (sh < -64)
3621                                 sh  = 0xff - (start - idx);
3622                         else if (sh < 0) {
3623                                 sh = start - idx;
3624                                 start = idx;
3625                                 bitmap = bitmap << sh;
3626                                 sh = 0;
3627                         }
3628                         bitmap |= (1 << sh);
3629                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3630                                            start, (u32)(bitmap & 0xFFFFFFFF));
3631                 }
3632
3633                 agg->bitmap0 = bitmap & 0xFFFFFFFF;
3634                 agg->bitmap1 = bitmap >> 32;
3635                 agg->start_idx = start;
3636                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3637                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3638                                    agg->frame_count, agg->start_idx,
3639                                    agg->bitmap0);
3640
3641                 if (bitmap)
3642                         agg->wait_for_ba = 1;
3643         }
3644         return 0;
3645 }
3646 #endif
3647 #endif
3648
3649 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3650                             struct iwl4965_rx_mem_buffer *rxb)
3651 {
3652         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3653         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3654         int txq_id = SEQ_TO_QUEUE(sequence);
3655         int index = SEQ_TO_INDEX(sequence);
3656         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3657         struct ieee80211_tx_status *tx_status;
3658         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3659         u32  status = le32_to_cpu(tx_resp->status);
3660 #ifdef CONFIG_IWL4965_HT
3661 #ifdef CONFIG_IWL4965_HT_AGG
3662         int tid, sta_id;
3663 #endif
3664 #endif
3665
3666         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3667                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3668                           "is out of range [0-%d] %d %d\n", txq_id,
3669                           index, txq->q.n_bd, txq->q.write_ptr,
3670                           txq->q.read_ptr);
3671                 return;
3672         }
3673
3674 #ifdef CONFIG_IWL4965_HT
3675 #ifdef CONFIG_IWL4965_HT_AGG
3676         if (txq->sched_retry) {
3677                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3678                 struct ieee80211_hdr *hdr =
3679                         iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3680                 struct iwl4965_ht_agg *agg = NULL;
3681                 __le16 *qc = ieee80211_get_qos_ctrl(hdr);
3682
3683                 if (qc == NULL) {
3684                         IWL_ERROR("BUG_ON qc is null!!!!\n");
3685                         return;
3686                 }
3687
3688                 tid = le16_to_cpu(*qc) & 0xf;
3689
3690                 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3691                 if (unlikely(sta_id == IWL_INVALID_STATION)) {
3692                         IWL_ERROR("Station not known for\n");
3693                         return;
3694                 }
3695
3696                 agg = &priv->stations[sta_id].tid[tid].agg;
3697
3698                 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3699
3700                 if ((tx_resp->frame_count == 1) &&
3701                     !iwl4965_is_tx_success(status)) {
3702                         /* TODO: send BAR */
3703                 }
3704
3705                 if ((txq->q.read_ptr != (scd_ssn & 0xff))) {
3706                         index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3707                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3708                                            "%d index %d\n", scd_ssn , index);
3709                         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3710                 }
3711         } else {
3712 #endif /* CONFIG_IWL4965_HT_AGG */
3713 #endif /* CONFIG_IWL4965_HT */
3714         tx_status = &(txq->txb[txq->q.read_ptr].status);
3715
3716         tx_status->retry_count = tx_resp->failure_frame;
3717         tx_status->queue_number = status;
3718         tx_status->queue_length = tx_resp->bt_kill_count;
3719         tx_status->queue_length |= tx_resp->failure_rts;
3720
3721         tx_status->flags =
3722             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3723
3724         tx_status->control.tx_rate =
3725                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3726
3727         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3728                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3729                      status, le32_to_cpu(tx_resp->rate_n_flags),
3730                      tx_resp->failure_frame);
3731
3732         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3733         if (index != -1)
3734                 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3735 #ifdef CONFIG_IWL4965_HT
3736 #ifdef CONFIG_IWL4965_HT_AGG
3737         }
3738 #endif /* CONFIG_IWL4965_HT_AGG */
3739 #endif /* CONFIG_IWL4965_HT */
3740
3741         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3742                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3743 }
3744
3745
3746 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3747                                struct iwl4965_rx_mem_buffer *rxb)
3748 {
3749         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3750         struct iwl4965_alive_resp *palive;
3751         struct delayed_work *pwork;
3752
3753         palive = &pkt->u.alive_frame;
3754
3755         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3756                        "0x%01X 0x%01X\n",
3757                        palive->is_valid, palive->ver_type,
3758                        palive->ver_subtype);
3759
3760         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3761                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3762                 memcpy(&priv->card_alive_init,
3763                        &pkt->u.alive_frame,
3764                        sizeof(struct iwl4965_init_alive_resp));
3765                 pwork = &priv->init_alive_start;
3766         } else {
3767                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3768                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3769                        sizeof(struct iwl4965_alive_resp));
3770                 pwork = &priv->alive_start;
3771         }
3772
3773         /* We delay the ALIVE response by 5ms to
3774          * give the HW RF Kill time to activate... */
3775         if (palive->is_valid == UCODE_VALID_OK)
3776                 queue_delayed_work(priv->workqueue, pwork,
3777                                    msecs_to_jiffies(5));
3778         else
3779                 IWL_WARNING("uCode did not respond OK.\n");
3780 }
3781
3782 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3783                                  struct iwl4965_rx_mem_buffer *rxb)
3784 {
3785         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3786
3787         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3788         return;
3789 }
3790
3791 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3792                                struct iwl4965_rx_mem_buffer *rxb)
3793 {
3794         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3795
3796         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3797                 "seq 0x%04X ser 0x%08X\n",
3798                 le32_to_cpu(pkt->u.err_resp.error_type),
3799                 get_cmd_string(pkt->u.err_resp.cmd_id),
3800                 pkt->u.err_resp.cmd_id,
3801                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3802                 le32_to_cpu(pkt->u.err_resp.error_info));
3803 }
3804
3805 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3806
3807 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3808 {
3809         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3810         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3811         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3812         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3813                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3814         rxon->channel = csa->channel;
3815         priv->staging_rxon.channel = csa->channel;
3816 }
3817
3818 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3819                                           struct iwl4965_rx_mem_buffer *rxb)
3820 {
3821 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3822         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3823         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3824
3825         if (!report->state) {
3826                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3827                           "Spectrum Measure Notification: Start\n");
3828                 return;
3829         }
3830
3831         memcpy(&priv->measure_report, report, sizeof(*report));
3832         priv->measurement_status |= MEASUREMENT_READY;
3833 #endif
3834 }
3835
3836 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3837                                   struct iwl4965_rx_mem_buffer *rxb)
3838 {
3839 #ifdef CONFIG_IWL4965_DEBUG
3840         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3841         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3842         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3843                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3844 #endif
3845 }
3846
3847 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3848                                              struct iwl4965_rx_mem_buffer *rxb)
3849 {
3850         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3851         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3852                         "notification for %s:\n",
3853                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3854         iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3855 }
3856
3857 static void iwl4965_bg_beacon_update(struct work_struct *work)
3858 {
3859         struct iwl4965_priv *priv =
3860                 container_of(work, struct iwl4965_priv, beacon_update);
3861         struct sk_buff *beacon;
3862
3863         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3864         beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3865
3866         if (!beacon) {
3867                 IWL_ERROR("update beacon failed\n");
3868                 return;
3869         }
3870
3871         mutex_lock(&priv->mutex);
3872         /* new beacon skb is allocated every time; dispose previous.*/
3873         if (priv->ibss_beacon)
3874                 dev_kfree_skb(priv->ibss_beacon);
3875
3876         priv->ibss_beacon = beacon;
3877         mutex_unlock(&priv->mutex);
3878
3879         iwl4965_send_beacon_cmd(priv);
3880 }
3881
3882 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3883                                 struct iwl4965_rx_mem_buffer *rxb)
3884 {
3885 #ifdef CONFIG_IWL4965_DEBUG
3886         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3887         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3888         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3889
3890         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3891                 "tsf %d %d rate %d\n",
3892                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3893                 beacon->beacon_notify_hdr.failure_frame,
3894                 le32_to_cpu(beacon->ibss_mgr_status),
3895                 le32_to_cpu(beacon->high_tsf),
3896                 le32_to_cpu(beacon->low_tsf), rate);
3897 #endif
3898
3899         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3900             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3901                 queue_work(priv->workqueue, &priv->beacon_update);
3902 }
3903
3904 /* Service response to REPLY_SCAN_CMD (0x80) */
3905 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
3906                               struct iwl4965_rx_mem_buffer *rxb)
3907 {
3908 #ifdef CONFIG_IWL4965_DEBUG
3909         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3910         struct iwl4965_scanreq_notification *notif =
3911             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3912
3913         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3914 #endif
3915 }
3916
3917 /* Service SCAN_START_NOTIFICATION (0x82) */
3918 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
3919                                     struct iwl4965_rx_mem_buffer *rxb)
3920 {
3921         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3922         struct iwl4965_scanstart_notification *notif =
3923             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3924         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3925         IWL_DEBUG_SCAN("Scan start: "
3926                        "%d [802.11%s] "
3927                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3928                        notif->channel,
3929                        notif->band ? "bg" : "a",
3930                        notif->tsf_high,
3931                        notif->tsf_low, notif->status, notif->beacon_timer);
3932 }
3933
3934 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3935 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
3936                                       struct iwl4965_rx_mem_buffer *rxb)
3937 {
3938         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3939         struct iwl4965_scanresults_notification *notif =
3940             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3941
3942         IWL_DEBUG_SCAN("Scan ch.res: "
3943                        "%d [802.11%s] "
3944                        "(TSF: 0x%08X:%08X) - %d "
3945                        "elapsed=%lu usec (%dms since last)\n",
3946                        notif->channel,
3947                        notif->band ? "bg" : "a",
3948                        le32_to_cpu(notif->tsf_high),
3949                        le32_to_cpu(notif->tsf_low),
3950                        le32_to_cpu(notif->statistics[0]),
3951                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3952                        jiffies_to_msecs(elapsed_jiffies
3953                                         (priv->last_scan_jiffies, jiffies)));
3954
3955         priv->last_scan_jiffies = jiffies;
3956 }
3957
3958 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3959 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
3960                                        struct iwl4965_rx_mem_buffer *rxb)
3961 {
3962         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3963         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3964
3965         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3966                        scan_notif->scanned_channels,
3967                        scan_notif->tsf_low,
3968                        scan_notif->tsf_high, scan_notif->status);
3969
3970         /* The HW is no longer scanning */
3971         clear_bit(STATUS_SCAN_HW, &priv->status);
3972
3973         /* The scan completion notification came in, so kill that timer... */
3974         cancel_delayed_work(&priv->scan_check);
3975
3976         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3977                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3978                        jiffies_to_msecs(elapsed_jiffies
3979                                         (priv->scan_pass_start, jiffies)));
3980
3981         /* Remove this scanned band from the list
3982          * of pending bands to scan */
3983         priv->scan_bands--;
3984
3985         /* If a request to abort was given, or the scan did not succeed
3986          * then we reset the scan state machine and terminate,
3987          * re-queuing another scan if one has been requested */
3988         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3989                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3990                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3991         } else {
3992                 /* If there are more bands on this scan pass reschedule */
3993                 if (priv->scan_bands > 0)
3994                         goto reschedule;
3995         }
3996
3997         priv->last_scan_jiffies = jiffies;
3998         IWL_DEBUG_INFO("Setting scan to off\n");
3999
4000         clear_bit(STATUS_SCANNING, &priv->status);
4001
4002         IWL_DEBUG_INFO("Scan took %dms\n",
4003                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4004
4005         queue_work(priv->workqueue, &priv->scan_completed);
4006
4007         return;
4008
4009 reschedule:
4010         priv->scan_pass_start = jiffies;
4011         queue_work(priv->workqueue, &priv->request_scan);
4012 }
4013
4014 /* Handle notification from uCode that card's power state is changing
4015  * due to software, hardware, or critical temperature RFKILL */
4016 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4017                                     struct iwl4965_rx_mem_buffer *rxb)
4018 {
4019         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4020         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4021         unsigned long status = priv->status;
4022
4023         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4024                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4025                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4026
4027         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4028                      RF_CARD_DISABLED)) {
4029
4030                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4031                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4032
4033                 if (!iwl4965_grab_nic_access(priv)) {
4034                         iwl4965_write_direct32(
4035                                 priv, HBUS_TARG_MBX_C,
4036                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4037
4038                         iwl4965_release_nic_access(priv);
4039                 }
4040
4041                 if (!(flags & RXON_CARD_DISABLED)) {
4042                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4043                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4044                         if (!iwl4965_grab_nic_access(priv)) {
4045                                 iwl4965_write_direct32(
4046                                         priv, HBUS_TARG_MBX_C,
4047                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4048
4049                                 iwl4965_release_nic_access(priv);
4050                         }
4051                 }
4052
4053                 if (flags & RF_CARD_DISABLED) {
4054                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4055                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4056                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4057                         if (!iwl4965_grab_nic_access(priv))
4058                                 iwl4965_release_nic_access(priv);
4059                 }
4060         }
4061
4062         if (flags & HW_CARD_DISABLED)
4063                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4064         else
4065                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4066
4067
4068         if (flags & SW_CARD_DISABLED)
4069                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4070         else
4071                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4072
4073         if (!(flags & RXON_CARD_DISABLED))
4074                 iwl4965_scan_cancel(priv);
4075
4076         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4077              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4078             (test_bit(STATUS_RF_KILL_SW, &status) !=
4079              test_bit(STATUS_RF_KILL_SW, &priv->status)))
4080                 queue_work(priv->workqueue, &priv->rf_kill);
4081         else
4082                 wake_up_interruptible(&priv->wait_command_queue);
4083 }
4084
4085 /**
4086  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4087  *
4088  * Setup the RX handlers for each of the reply types sent from the uCode
4089  * to the host.
4090  *
4091  * This function chains into the hardware specific files for them to setup
4092  * any hardware specific handlers as well.
4093  */
4094 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4095 {
4096         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4097         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4098         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4099         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4100         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4101             iwl4965_rx_spectrum_measure_notif;
4102         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4103         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4104             iwl4965_rx_pm_debug_statistics_notif;
4105         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4106
4107         /* NOTE:  iwl4965_rx_statistics is different based on whether
4108          * the build is for the 3945 or the 4965.  See the
4109          * corresponding implementation in iwl-XXXX.c
4110          *
4111          * The same handler is used for both the REPLY to a
4112          * discrete statistics request from the host as well as
4113          * for the periodic statistics notification from the uCode
4114          */
4115         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4116         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4117
4118         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4119         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4120         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4121             iwl4965_rx_scan_results_notif;
4122         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4123             iwl4965_rx_scan_complete_notif;
4124         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4125         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4126
4127         /* Setup hardware specific Rx handlers */
4128         iwl4965_hw_rx_handler_setup(priv);
4129 }
4130
4131 /**
4132  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4133  * @rxb: Rx buffer to reclaim
4134  *
4135  * If an Rx buffer has an async callback associated with it the callback
4136  * will be executed.  The attached skb (if present) will only be freed
4137  * if the callback returns 1
4138  */
4139 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4140                                 struct iwl4965_rx_mem_buffer *rxb)
4141 {
4142         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4143         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4144         int txq_id = SEQ_TO_QUEUE(sequence);
4145         int index = SEQ_TO_INDEX(sequence);
4146         int huge = sequence & SEQ_HUGE_FRAME;
4147         int cmd_index;
4148         struct iwl4965_cmd *cmd;
4149
4150         /* If a Tx command is being handled and it isn't in the actual
4151          * command queue then there a command routing bug has been introduced
4152          * in the queue management code. */
4153         if (txq_id != IWL_CMD_QUEUE_NUM)
4154                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4155                           txq_id, pkt->hdr.cmd);
4156         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4157
4158         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4159         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4160
4161         /* Input error checking is done when commands are added to queue. */
4162         if (cmd->meta.flags & CMD_WANT_SKB) {
4163                 cmd->meta.source->u.skb = rxb->skb;
4164                 rxb->skb = NULL;
4165         } else if (cmd->meta.u.callback &&
4166                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
4167                 rxb->skb = NULL;
4168
4169         iwl4965_tx_queue_reclaim(priv, txq_id, index);
4170
4171         if (!(cmd->meta.flags & CMD_ASYNC)) {
4172                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4173                 wake_up_interruptible(&priv->wait_command_queue);
4174         }
4175 }
4176
4177 /************************** RX-FUNCTIONS ****************************/
4178 /*
4179  * Rx theory of operation
4180  *
4181  * The host allocates 32 DMA target addresses and passes the host address
4182  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
4183  * 0 to 31
4184  *
4185  * Rx Queue Indexes
4186  * The host/firmware share two index registers for managing the Rx buffers.
4187  *
4188  * The READ index maps to the first position that the firmware may be writing
4189  * to -- the driver can read up to (but not including) this position and get
4190  * good data.
4191  * The READ index is managed by the firmware once the card is enabled.
4192  *
4193  * The WRITE index maps to the last position the driver has read from -- the
4194  * position preceding WRITE is the last slot the firmware can place a packet.
4195  *
4196  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4197  * WRITE = READ.
4198  *
4199  * During initialization the host sets up the READ queue position to the first
4200  * INDEX position, and WRITE to the last (READ - 1 wrapped)
4201  *
4202  * When the firmware places a packet in a buffer it will advance the READ index
4203  * and fire the RX interrupt.  The driver can then query the READ index and
4204  * process as many packets as possible, moving the WRITE index forward as it
4205  * resets the Rx queue buffers with new memory.
4206  *
4207  * The management in the driver is as follows:
4208  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
4209  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4210  *   to replenish the iwl->rxq->rx_free.
4211  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4212  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
4213  *   'processed' and 'read' driver indexes as well)
4214  * + A received packet is processed and handed to the kernel network stack,
4215  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
4216  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4217  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4218  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
4219  *   were enough free buffers and RX_STALLED is set it is cleared.
4220  *
4221  *
4222  * Driver sequence:
4223  *
4224  * iwl4965_rx_queue_alloc()       Allocates rx_free
4225  * iwl4965_rx_replenish()         Replenishes rx_free list from rx_used, and calls
4226  *                            iwl4965_rx_queue_restock
4227  * iwl4965_rx_queue_restock()     Moves available buffers from rx_free into Rx
4228  *                            queue, updates firmware pointers, and updates
4229  *                            the WRITE index.  If insufficient rx_free buffers
4230  *                            are available, schedules iwl4965_rx_replenish
4231  *
4232  * -- enable interrupts --
4233  * ISR - iwl4965_rx()             Detach iwl4965_rx_mem_buffers from pool up to the
4234  *                            READ INDEX, detaching the SKB from the pool.
4235  *                            Moves the packet buffer from queue to rx_used.
4236  *                            Calls iwl4965_rx_queue_restock to refill any empty
4237  *                            slots.
4238  * ...
4239  *
4240  */
4241
4242 /**
4243  * iwl4965_rx_queue_space - Return number of free slots available in queue.
4244  */
4245 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4246 {
4247         int s = q->read - q->write;
4248         if (s <= 0)
4249                 s += RX_QUEUE_SIZE;
4250         /* keep some buffer to not confuse full and empty queue */
4251         s -= 2;
4252         if (s < 0)
4253                 s = 0;
4254         return s;
4255 }
4256
4257 /**
4258  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4259  *
4260  * NOTE: This function has 3945 and 4965 specific code sections
4261  * but is declared in base due to the majority of the
4262  * implementation being the same (only a numeric constant is
4263  * different)
4264  *
4265  */
4266 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4267 {
4268         u32 reg = 0;
4269         int rc = 0;
4270         unsigned long flags;
4271
4272         spin_lock_irqsave(&q->lock, flags);
4273
4274         if (q->need_update == 0)
4275                 goto exit_unlock;
4276
4277         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4278                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4279
4280                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4281                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4282                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4283                         goto exit_unlock;
4284                 }
4285
4286                 rc = iwl4965_grab_nic_access(priv);
4287                 if (rc)
4288                         goto exit_unlock;
4289
4290                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4291                                      q->write & ~0x7);
4292                 iwl4965_release_nic_access(priv);
4293         } else
4294                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4295
4296
4297         q->need_update = 0;
4298
4299  exit_unlock:
4300         spin_unlock_irqrestore(&q->lock, flags);
4301         return rc;
4302 }
4303
4304 /**
4305  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
4306  *
4307  * NOTE: This function has 3945 and 4965 specific code paths in it.
4308  */
4309 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4310                                           dma_addr_t dma_addr)
4311 {
4312         return cpu_to_le32((u32)(dma_addr >> 8));
4313 }
4314
4315
4316 /**
4317  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4318  *
4319  * If there are slots in the RX queue that  need to be restocked,
4320  * and we have free pre-allocated buffers, fill the ranks as much
4321  * as we can pulling from rx_free.
4322  *
4323  * This moves the 'write' index forward to catch up with 'processed', and
4324  * also updates the memory address in the firmware to reference the new
4325  * target buffer.
4326  */
4327 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4328 {
4329         struct iwl4965_rx_queue *rxq = &priv->rxq;
4330         struct list_head *element;
4331         struct iwl4965_rx_mem_buffer *rxb;
4332         unsigned long flags;
4333         int write, rc;
4334
4335         spin_lock_irqsave(&rxq->lock, flags);
4336         write = rxq->write & ~0x7;
4337         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4338                 element = rxq->rx_free.next;
4339                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4340                 list_del(element);
4341                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4342                 rxq->queue[rxq->write] = rxb;
4343                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4344                 rxq->free_count--;
4345         }
4346         spin_unlock_irqrestore(&rxq->lock, flags);
4347         /* If the pre-allocated buffer pool is dropping low, schedule to
4348          * refill it */
4349         if (rxq->free_count <= RX_LOW_WATERMARK)
4350                 queue_work(priv->workqueue, &priv->rx_replenish);
4351
4352
4353         /* If we've added more space for the firmware to place data, tell it */
4354         if ((write != (rxq->write & ~0x7))
4355             || (abs(rxq->write - rxq->read) > 7)) {
4356                 spin_lock_irqsave(&rxq->lock, flags);
4357                 rxq->need_update = 1;
4358                 spin_unlock_irqrestore(&rxq->lock, flags);
4359                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4360                 if (rc)
4361                         return rc;
4362         }
4363
4364         return 0;
4365 }
4366
4367 /**
4368  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4369  *
4370  * When moving to rx_free an SKB is allocated for the slot.
4371  *
4372  * Also restock the Rx queue via iwl4965_rx_queue_restock.
4373  * This is called as a scheduled work item (except for during initialization)
4374  */
4375 void iwl4965_rx_replenish(void *data)
4376 {
4377         struct iwl4965_priv *priv = data;
4378         struct iwl4965_rx_queue *rxq = &priv->rxq;
4379         struct list_head *element;
4380         struct iwl4965_rx_mem_buffer *rxb;
4381         unsigned long flags;
4382         spin_lock_irqsave(&rxq->lock, flags);
4383         while (!list_empty(&rxq->rx_used)) {
4384                 element = rxq->rx_used.next;
4385                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4386                 rxb->skb =
4387                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4388                 if (!rxb->skb) {
4389                         if (net_ratelimit())
4390                                 printk(KERN_CRIT DRV_NAME
4391                                        ": Can not allocate SKB buffers\n");
4392                         /* We don't reschedule replenish work here -- we will
4393                          * call the restock method and if it still needs
4394                          * more buffers it will schedule replenish */
4395                         break;
4396                 }
4397                 priv->alloc_rxb_skb++;
4398                 list_del(element);
4399                 rxb->dma_addr =
4400                     pci_map_single(priv->pci_dev, rxb->skb->data,
4401                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4402                 list_add_tail(&rxb->list, &rxq->rx_free);
4403                 rxq->free_count++;
4404         }
4405         spin_unlock_irqrestore(&rxq->lock, flags);
4406
4407         spin_lock_irqsave(&priv->lock, flags);
4408         iwl4965_rx_queue_restock(priv);
4409         spin_unlock_irqrestore(&priv->lock, flags);
4410 }
4411
4412 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4413  * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4414  * This free routine walks the list of POOL entries and if SKB is set to
4415  * non NULL it is unmapped and freed
4416  */
4417 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4418 {
4419         int i;
4420         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4421                 if (rxq->pool[i].skb != NULL) {
4422                         pci_unmap_single(priv->pci_dev,
4423                                          rxq->pool[i].dma_addr,
4424                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4425                         dev_kfree_skb(rxq->pool[i].skb);
4426                 }
4427         }
4428
4429         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4430                             rxq->dma_addr);
4431         rxq->bd = NULL;
4432 }
4433
4434 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4435 {
4436         struct iwl4965_rx_queue *rxq = &priv->rxq;
4437         struct pci_dev *dev = priv->pci_dev;
4438         int i;
4439
4440         spin_lock_init(&rxq->lock);
4441         INIT_LIST_HEAD(&rxq->rx_free);
4442         INIT_LIST_HEAD(&rxq->rx_used);
4443         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4444         if (!rxq->bd)
4445                 return -ENOMEM;
4446         /* Fill the rx_used queue with _all_ of the Rx buffers */
4447         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4448                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4449         /* Set us so that we have processed and used all buffers, but have
4450          * not restocked the Rx queue with fresh buffers */
4451         rxq->read = rxq->write = 0;
4452         rxq->free_count = 0;
4453         rxq->need_update = 0;
4454         return 0;
4455 }
4456
4457 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4458 {
4459         unsigned long flags;
4460         int i;
4461         spin_lock_irqsave(&rxq->lock, flags);
4462         INIT_LIST_HEAD(&rxq->rx_free);
4463         INIT_LIST_HEAD(&rxq->rx_used);
4464         /* Fill the rx_used queue with _all_ of the Rx buffers */
4465         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4466                 /* In the reset function, these buffers may have been allocated
4467                  * to an SKB, so we need to unmap and free potential storage */
4468                 if (rxq->pool[i].skb != NULL) {
4469                         pci_unmap_single(priv->pci_dev,
4470                                          rxq->pool[i].dma_addr,
4471                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4472                         priv->alloc_rxb_skb--;
4473                         dev_kfree_skb(rxq->pool[i].skb);
4474                         rxq->pool[i].skb = NULL;
4475                 }
4476                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4477         }
4478
4479         /* Set us so that we have processed and used all buffers, but have
4480          * not restocked the Rx queue with fresh buffers */
4481         rxq->read = rxq->write = 0;
4482         rxq->free_count = 0;
4483         spin_unlock_irqrestore(&rxq->lock, flags);
4484 }
4485
4486 /* Convert linear signal-to-noise ratio into dB */
4487 static u8 ratio2dB[100] = {
4488 /*       0   1   2   3   4   5   6   7   8   9 */
4489          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4490         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4491         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4492         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4493         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4494         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4495         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4496         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4497         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4498         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4499 };
4500
4501 /* Calculates a relative dB value from a ratio of linear
4502  *   (i.e. not dB) signal levels.
4503  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4504 int iwl4965_calc_db_from_ratio(int sig_ratio)
4505 {
4506         /* 1000:1 or higher just report as 60 dB */
4507         if (sig_ratio >= 1000)
4508                 return 60;
4509
4510         /* 100:1 or higher, divide by 10 and use table,
4511          *   add 20 dB to make up for divide by 10 */
4512         if (sig_ratio >= 100)
4513                 return (20 + (int)ratio2dB[sig_ratio/10]);
4514
4515         /* We shouldn't see this */
4516         if (sig_ratio < 1)
4517                 return 0;
4518
4519         /* Use table for ratios 1:1 - 99:1 */
4520         return (int)ratio2dB[sig_ratio];
4521 }
4522
4523 #define PERFECT_RSSI (-20) /* dBm */
4524 #define WORST_RSSI (-95)   /* dBm */
4525 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4526
4527 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4528  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4529  *   about formulas used below. */
4530 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4531 {
4532         int sig_qual;
4533         int degradation = PERFECT_RSSI - rssi_dbm;
4534
4535         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4536          * as indicator; formula is (signal dbm - noise dbm).
4537          * SNR at or above 40 is a great signal (100%).
4538          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4539          * Weakest usable signal is usually 10 - 15 dB SNR. */
4540         if (noise_dbm) {
4541                 if (rssi_dbm - noise_dbm >= 40)
4542                         return 100;
4543                 else if (rssi_dbm < noise_dbm)
4544                         return 0;
4545                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4546
4547         /* Else use just the signal level.
4548          * This formula is a least squares fit of data points collected and
4549          *   compared with a reference system that had a percentage (%) display
4550          *   for signal quality. */
4551         } else
4552                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4553                             (15 * RSSI_RANGE + 62 * degradation)) /
4554                            (RSSI_RANGE * RSSI_RANGE);
4555
4556         if (sig_qual > 100)
4557                 sig_qual = 100;
4558         else if (sig_qual < 1)
4559                 sig_qual = 0;
4560
4561         return sig_qual;
4562 }
4563
4564 /**
4565  * iwl4965_rx_handle - Main entry function for receiving responses from the uCode
4566  *
4567  * Uses the priv->rx_handlers callback function array to invoke
4568  * the appropriate handlers, including command responses,
4569  * frame-received notifications, and other notifications.
4570  */
4571 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4572 {
4573         struct iwl4965_rx_mem_buffer *rxb;
4574         struct iwl4965_rx_packet *pkt;
4575         struct iwl4965_rx_queue *rxq = &priv->rxq;
4576         u32 r, i;
4577         int reclaim;
4578         unsigned long flags;
4579
4580         r = iwl4965_hw_get_rx_read(priv);
4581         i = rxq->read;
4582
4583         /* Rx interrupt, but nothing sent from uCode */
4584         if (i == r)
4585                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4586
4587         while (i != r) {
4588                 rxb = rxq->queue[i];
4589
4590                 /* If an RXB doesn't have a queue slot associated with it
4591                  * then a bug has been introduced in the queue refilling
4592                  * routines -- catch it here */
4593                 BUG_ON(rxb == NULL);
4594
4595                 rxq->queue[i] = NULL;
4596
4597                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4598                                             IWL_RX_BUF_SIZE,
4599                                             PCI_DMA_FROMDEVICE);
4600                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4601
4602                 /* Reclaim a command buffer only if this packet is a response
4603                  *   to a (driver-originated) command.
4604                  * If the packet (e.g. Rx frame) originated from uCode,
4605                  *   there is no command buffer to reclaim.
4606                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4607                  *   but apparently a few don't get set; catch them here. */
4608                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4609                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4610                         (pkt->hdr.cmd != REPLY_4965_RX) &&
4611                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4612                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4613                         (pkt->hdr.cmd != REPLY_TX);
4614
4615                 /* Based on type of command response or notification,
4616                  *   handle those that need handling via function in
4617                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4618                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4619                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4620                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4621                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4622                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4623                 } else {
4624                         /* No handling needed */
4625                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4626                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4627                                 r, i, get_cmd_string(pkt->hdr.cmd),
4628                                 pkt->hdr.cmd);
4629                 }
4630
4631                 if (reclaim) {
4632                         /* Invoke any callbacks, transfer the skb to caller,
4633                          * and fire off the (possibly) blocking iwl4965_send_cmd()
4634                          * as we reclaim the driver command queue */
4635                         if (rxb && rxb->skb)
4636                                 iwl4965_tx_cmd_complete(priv, rxb);
4637                         else
4638                                 IWL_WARNING("Claim null rxb?\n");
4639                 }
4640
4641                 /* For now we just don't re-use anything.  We can tweak this
4642                  * later to try and re-use notification packets and SKBs that
4643                  * fail to Rx correctly */
4644                 if (rxb->skb != NULL) {
4645                         priv->alloc_rxb_skb--;
4646                         dev_kfree_skb_any(rxb->skb);
4647                         rxb->skb = NULL;
4648                 }
4649
4650                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4651                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4652                 spin_lock_irqsave(&rxq->lock, flags);
4653                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4654                 spin_unlock_irqrestore(&rxq->lock, flags);
4655                 i = (i + 1) & RX_QUEUE_MASK;
4656         }
4657
4658         /* Backtrack one entry */
4659         priv->rxq.read = i;
4660         iwl4965_rx_queue_restock(priv);
4661 }
4662
4663 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4664                                   struct iwl4965_tx_queue *txq)
4665 {
4666         u32 reg = 0;
4667         int rc = 0;
4668         int txq_id = txq->q.id;
4669
4670         if (txq->need_update == 0)
4671                 return rc;
4672
4673         /* if we're trying to save power */
4674         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4675                 /* wake up nic if it's powered down ...
4676                  * uCode will wake up, and interrupt us again, so next
4677                  * time we'll skip this part. */
4678                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4679
4680                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4681                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4682                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4683                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4684                         return rc;
4685                 }
4686
4687                 /* restore this queue's parameters in nic hardware. */
4688                 rc = iwl4965_grab_nic_access(priv);
4689                 if (rc)
4690                         return rc;
4691                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4692                                      txq->q.write_ptr | (txq_id << 8));
4693                 iwl4965_release_nic_access(priv);
4694
4695         /* else not in power-save mode, uCode will never sleep when we're
4696          * trying to tx (during RFKILL, we're not trying to tx). */
4697         } else
4698                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4699                             txq->q.write_ptr | (txq_id << 8));
4700
4701         txq->need_update = 0;
4702
4703         return rc;
4704 }
4705
4706 #ifdef CONFIG_IWL4965_DEBUG
4707 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4708 {
4709         DECLARE_MAC_BUF(mac);
4710
4711         IWL_DEBUG_RADIO("RX CONFIG:\n");
4712         iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4713         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4714         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4715         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4716                         le32_to_cpu(rxon->filter_flags));
4717         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4718         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4719                         rxon->ofdm_basic_rates);
4720         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4721         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4722                         print_mac(mac, rxon->node_addr));
4723         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4724                         print_mac(mac, rxon->bssid_addr));
4725         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4726 }
4727 #endif
4728
4729 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4730 {
4731         IWL_DEBUG_ISR("Enabling interrupts\n");
4732         set_bit(STATUS_INT_ENABLED, &priv->status);
4733         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4734 }
4735
4736 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4737 {
4738         clear_bit(STATUS_INT_ENABLED, &priv->status);
4739
4740         /* disable interrupts from uCode/NIC to host */
4741         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4742
4743         /* acknowledge/clear/reset any interrupts still pending
4744          * from uCode or flow handler (Rx/Tx DMA) */
4745         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4746         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4747         IWL_DEBUG_ISR("Disabled interrupts\n");
4748 }
4749
4750 static const char *desc_lookup(int i)
4751 {
4752         switch (i) {
4753         case 1:
4754                 return "FAIL";
4755         case 2:
4756                 return "BAD_PARAM";
4757         case 3:
4758                 return "BAD_CHECKSUM";
4759         case 4:
4760                 return "NMI_INTERRUPT";
4761         case 5:
4762                 return "SYSASSERT";
4763         case 6:
4764                 return "FATAL_ERROR";
4765         }
4766
4767         return "UNKNOWN";
4768 }
4769
4770 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4771 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4772
4773 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4774 {
4775         u32 data2, line;
4776         u32 desc, time, count, base, data1;
4777         u32 blink1, blink2, ilink1, ilink2;
4778         int rc;
4779
4780         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4781
4782         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4783                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4784                 return;
4785         }
4786
4787         rc = iwl4965_grab_nic_access(priv);
4788         if (rc) {
4789                 IWL_WARNING("Can not read from adapter at this time.\n");
4790                 return;
4791         }
4792
4793         count = iwl4965_read_targ_mem(priv, base);
4794
4795         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4796                 IWL_ERROR("Start IWL Error Log Dump:\n");
4797                 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4798                           priv->status, priv->config, count);
4799         }
4800
4801         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4802         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4803         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4804         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4805         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4806         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4807         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4808         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4809         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4810
4811         IWL_ERROR("Desc               Time       "
4812                   "data1      data2      line\n");
4813         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4814                   desc_lookup(desc), desc, time, data1, data2, line);
4815         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4816         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4817                   ilink1, ilink2);
4818
4819         iwl4965_release_nic_access(priv);
4820 }
4821
4822 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4823
4824 /**
4825  * iwl4965_print_event_log - Dump error event log to syslog
4826  *
4827  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4828  */
4829 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4830                                 u32 num_events, u32 mode)
4831 {
4832         u32 i;
4833         u32 base;       /* SRAM byte address of event log header */
4834         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4835         u32 ptr;        /* SRAM byte address of log data */
4836         u32 ev, time, data; /* event log data */
4837
4838         if (num_events == 0)
4839                 return;
4840
4841         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4842
4843         if (mode == 0)
4844                 event_size = 2 * sizeof(u32);
4845         else
4846                 event_size = 3 * sizeof(u32);
4847
4848         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4849
4850         /* "time" is actually "data" for mode 0 (no timestamp).
4851          * place event id # at far right for easier visual parsing. */
4852         for (i = 0; i < num_events; i++) {
4853                 ev = iwl4965_read_targ_mem(priv, ptr);
4854                 ptr += sizeof(u32);
4855                 time = iwl4965_read_targ_mem(priv, ptr);
4856                 ptr += sizeof(u32);
4857                 if (mode == 0)
4858                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4859                 else {
4860                         data = iwl4965_read_targ_mem(priv, ptr);
4861                         ptr += sizeof(u32);
4862                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4863                 }
4864         }
4865 }
4866
4867 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4868 {
4869         int rc;
4870         u32 base;       /* SRAM byte address of event log header */
4871         u32 capacity;   /* event log capacity in # entries */
4872         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4873         u32 num_wraps;  /* # times uCode wrapped to top of log */
4874         u32 next_entry; /* index of next entry to be written by uCode */
4875         u32 size;       /* # entries that we'll print */
4876
4877         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4878         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4879                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4880                 return;
4881         }
4882
4883         rc = iwl4965_grab_nic_access(priv);
4884         if (rc) {
4885                 IWL_WARNING("Can not read from adapter at this time.\n");
4886                 return;
4887         }
4888
4889         /* event log header */
4890         capacity = iwl4965_read_targ_mem(priv, base);
4891         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4892         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4893         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4894
4895         size = num_wraps ? capacity : next_entry;
4896
4897         /* bail out if nothing in log */
4898         if (size == 0) {
4899                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4900                 iwl4965_release_nic_access(priv);
4901                 return;
4902         }
4903
4904         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4905                   size, num_wraps);
4906
4907         /* if uCode has wrapped back to top of log, start at the oldest entry,
4908          * i.e the next one that uCode would fill. */
4909         if (num_wraps)
4910                 iwl4965_print_event_log(priv, next_entry,
4911                                     capacity - next_entry, mode);
4912
4913         /* (then/else) start at top of log */
4914         iwl4965_print_event_log(priv, 0, next_entry, mode);
4915
4916         iwl4965_release_nic_access(priv);
4917 }
4918
4919 /**
4920  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4921  */
4922 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
4923 {
4924         /* Set the FW error flag -- cleared on iwl4965_down */
4925         set_bit(STATUS_FW_ERROR, &priv->status);
4926
4927         /* Cancel currently queued command. */
4928         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4929
4930 #ifdef CONFIG_IWL4965_DEBUG
4931         if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
4932                 iwl4965_dump_nic_error_log(priv);
4933                 iwl4965_dump_nic_event_log(priv);
4934                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4935         }
4936 #endif
4937
4938         wake_up_interruptible(&priv->wait_command_queue);
4939
4940         /* Keep the restart process from trying to send host
4941          * commands by clearing the INIT status bit */
4942         clear_bit(STATUS_READY, &priv->status);
4943
4944         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4945                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4946                           "Restarting adapter due to uCode error.\n");
4947
4948                 if (iwl4965_is_associated(priv)) {
4949                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4950                                sizeof(priv->recovery_rxon));
4951                         priv->error_recovering = 1;
4952                 }
4953                 queue_work(priv->workqueue, &priv->restart);
4954         }
4955 }
4956
4957 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
4958 {
4959         unsigned long flags;
4960
4961         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4962                sizeof(priv->staging_rxon));
4963         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4964         iwl4965_commit_rxon(priv);
4965
4966         iwl4965_rxon_add_station(priv, priv->bssid, 1);
4967
4968         spin_lock_irqsave(&priv->lock, flags);
4969         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4970         priv->error_recovering = 0;
4971         spin_unlock_irqrestore(&priv->lock, flags);
4972 }
4973
4974 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
4975 {
4976         u32 inta, handled = 0;
4977         u32 inta_fh;
4978         unsigned long flags;
4979 #ifdef CONFIG_IWL4965_DEBUG
4980         u32 inta_mask;
4981 #endif
4982
4983         spin_lock_irqsave(&priv->lock, flags);
4984
4985         /* Ack/clear/reset pending uCode interrupts.
4986          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4987          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4988         inta = iwl4965_read32(priv, CSR_INT);
4989         iwl4965_write32(priv, CSR_INT, inta);
4990
4991         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4992          * Any new interrupts that happen after this, either while we're
4993          * in this tasklet, or later, will show up in next ISR/tasklet. */
4994         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4995         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4996
4997 #ifdef CONFIG_IWL4965_DEBUG
4998         if (iwl4965_debug_level & IWL_DL_ISR) {
4999                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK); /* just for debug */
5000                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5001                               inta, inta_mask, inta_fh);
5002         }
5003 #endif
5004
5005         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5006          * atomic, make sure that inta covers all the interrupts that
5007          * we've discovered, even if FH interrupt came in just after
5008          * reading CSR_INT. */
5009         if (inta_fh & CSR_FH_INT_RX_MASK)
5010                 inta |= CSR_INT_BIT_FH_RX;
5011         if (inta_fh & CSR_FH_INT_TX_MASK)
5012                 inta |= CSR_INT_BIT_FH_TX;
5013
5014         /* Now service all interrupt bits discovered above. */
5015         if (inta & CSR_INT_BIT_HW_ERR) {
5016                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
5017
5018                 /* Tell the device to stop sending interrupts */
5019                 iwl4965_disable_interrupts(priv);
5020
5021                 iwl4965_irq_handle_error(priv);
5022
5023                 handled |= CSR_INT_BIT_HW_ERR;
5024
5025                 spin_unlock_irqrestore(&priv->lock, flags);
5026
5027                 return;
5028         }
5029
5030 #ifdef CONFIG_IWL4965_DEBUG
5031         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5032                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5033                 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5034                         IWL_DEBUG_ISR("Microcode started or stopped.\n");
5035
5036                 /* Alive notification via Rx interrupt will do the real work */
5037                 if (inta & CSR_INT_BIT_ALIVE)
5038                         IWL_DEBUG_ISR("Alive interrupt\n");
5039         }
5040 #endif
5041         /* Safely ignore these bits for debug checks below */
5042         inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5043
5044         /* HW RF KILL switch toggled (4965 only) */
5045         if (inta & CSR_INT_BIT_RF_KILL) {
5046                 int hw_rf_kill = 0;
5047                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5048                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5049                         hw_rf_kill = 1;
5050
5051                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5052                                 "RF_KILL bit toggled to %s.\n",
5053                                 hw_rf_kill ? "disable radio":"enable radio");
5054
5055                 /* Queue restart only if RF_KILL switch was set to "kill"
5056                  *   when we loaded driver, and is now set to "enable".
5057                  * After we're Alive, RF_KILL gets handled by
5058                  *   iwl_rx_card_state_notif() */
5059                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5060                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
5061                         queue_work(priv->workqueue, &priv->restart);
5062                 }
5063
5064                 handled |= CSR_INT_BIT_RF_KILL;
5065         }
5066
5067         /* Chip got too hot and stopped itself (4965 only) */
5068         if (inta & CSR_INT_BIT_CT_KILL) {
5069                 IWL_ERROR("Microcode CT kill error detected.\n");
5070                 handled |= CSR_INT_BIT_CT_KILL;
5071         }
5072
5073         /* Error detected by uCode */
5074         if (inta & CSR_INT_BIT_SW_ERR) {
5075                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
5076                           inta);
5077                 iwl4965_irq_handle_error(priv);
5078                 handled |= CSR_INT_BIT_SW_ERR;
5079         }
5080
5081         /* uCode wakes up after power-down sleep */
5082         if (inta & CSR_INT_BIT_WAKEUP) {
5083                 IWL_DEBUG_ISR("Wakeup interrupt\n");
5084                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5085                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5086                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5087                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5088                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5089                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5090                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5091
5092                 handled |= CSR_INT_BIT_WAKEUP;
5093         }
5094
5095         /* All uCode command responses, including Tx command responses,
5096          * Rx "responses" (frame-received notification), and other
5097          * notifications from uCode come through here*/
5098         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5099                 iwl4965_rx_handle(priv);
5100                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5101         }
5102
5103         if (inta & CSR_INT_BIT_FH_TX) {
5104                 IWL_DEBUG_ISR("Tx interrupt\n");
5105                 handled |= CSR_INT_BIT_FH_TX;
5106         }
5107
5108         if (inta & ~handled)
5109                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5110
5111         if (inta & ~CSR_INI_SET_MASK) {
5112                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5113                          inta & ~CSR_INI_SET_MASK);
5114                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
5115         }
5116
5117         /* Re-enable all interrupts */
5118         iwl4965_enable_interrupts(priv);
5119
5120 #ifdef CONFIG_IWL4965_DEBUG
5121         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5122                 inta = iwl4965_read32(priv, CSR_INT);
5123                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5124                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5125                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5126                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5127         }
5128 #endif
5129         spin_unlock_irqrestore(&priv->lock, flags);
5130 }
5131
5132 static irqreturn_t iwl4965_isr(int irq, void *data)
5133 {
5134         struct iwl4965_priv *priv = data;
5135         u32 inta, inta_mask;
5136         u32 inta_fh;
5137         if (!priv)
5138                 return IRQ_NONE;
5139
5140         spin_lock(&priv->lock);
5141
5142         /* Disable (but don't clear!) interrupts here to avoid
5143          *    back-to-back ISRs and sporadic interrupts from our NIC.
5144          * If we have something to service, the tasklet will re-enable ints.
5145          * If we *don't* have something, we'll re-enable before leaving here. */
5146         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
5147         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5148
5149         /* Discover which interrupts are active/pending */
5150         inta = iwl4965_read32(priv, CSR_INT);
5151         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5152
5153         /* Ignore interrupt if there's nothing in NIC to service.
5154          * This may be due to IRQ shared with another device,
5155          * or due to sporadic interrupts thrown from our NIC. */
5156         if (!inta && !inta_fh) {
5157                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5158                 goto none;
5159         }
5160
5161         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5162                 /* Hardware disappeared. It might have already raised
5163                  * an interrupt */
5164                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5165                 goto unplugged;
5166         }
5167
5168         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5169                       inta, inta_mask, inta_fh);
5170
5171         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5172         tasklet_schedule(&priv->irq_tasklet);
5173
5174  unplugged:
5175         spin_unlock(&priv->lock);
5176         return IRQ_HANDLED;
5177
5178  none:
5179         /* re-enable interrupts here since we don't have anything to service. */
5180         iwl4965_enable_interrupts(priv);
5181         spin_unlock(&priv->lock);
5182         return IRQ_NONE;
5183 }
5184
5185 /************************** EEPROM BANDS ****************************
5186  *
5187  * The iwl4965_eeprom_band definitions below provide the mapping from the
5188  * EEPROM contents to the specific channel number supported for each
5189  * band.
5190  *
5191  * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5192  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5193  * The specific geography and calibration information for that channel
5194  * is contained in the eeprom map itself.
5195  *
5196  * During init, we copy the eeprom information and channel map
5197  * information into priv->channel_info_24/52 and priv->channel_map_24/52
5198  *
5199  * channel_map_24/52 provides the index in the channel_info array for a
5200  * given channel.  We have to have two separate maps as there is channel
5201  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5202  * band_2
5203  *
5204  * A value of 0xff stored in the channel_map indicates that the channel
5205  * is not supported by the hardware at all.
5206  *
5207  * A value of 0xfe in the channel_map indicates that the channel is not
5208  * valid for Tx with the current hardware.  This means that
5209  * while the system can tune and receive on a given channel, it may not
5210  * be able to associate or transmit any frames on that
5211  * channel.  There is no corresponding channel information for that
5212  * entry.
5213  *
5214  *********************************************************************/
5215
5216 /* 2.4 GHz */
5217 static const u8 iwl4965_eeprom_band_1[14] = {
5218         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5219 };
5220
5221 /* 5.2 GHz bands */
5222 static const u8 iwl4965_eeprom_band_2[] = {
5223         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5224 };
5225
5226 static const u8 iwl4965_eeprom_band_3[] = {     /* 5205-5320MHz */
5227         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5228 };
5229
5230 static const u8 iwl4965_eeprom_band_4[] = {     /* 5500-5700MHz */
5231         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5232 };
5233
5234 static const u8 iwl4965_eeprom_band_5[] = {     /* 5725-5825MHz */
5235         145, 149, 153, 157, 161, 165
5236 };
5237
5238 static u8 iwl4965_eeprom_band_6[] = {       /* 2.4 FAT channel */
5239         1, 2, 3, 4, 5, 6, 7
5240 };
5241
5242 static u8 iwl4965_eeprom_band_7[] = {       /* 5.2 FAT channel */
5243         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5244 };
5245
5246 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv, int band,
5247                                     int *eeprom_ch_count,
5248                                     const struct iwl4965_eeprom_channel
5249                                     **eeprom_ch_info,
5250                                     const u8 **eeprom_ch_index)
5251 {
5252         switch (band) {
5253         case 1:         /* 2.4GHz band */
5254                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5255                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5256                 *eeprom_ch_index = iwl4965_eeprom_band_1;
5257                 break;
5258         case 2:         /* 5.2GHz band */
5259                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5260                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5261                 *eeprom_ch_index = iwl4965_eeprom_band_2;
5262                 break;
5263         case 3:         /* 5.2GHz band */
5264                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5265                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5266                 *eeprom_ch_index = iwl4965_eeprom_band_3;
5267                 break;
5268         case 4:         /* 5.2GHz band */
5269                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5270                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5271                 *eeprom_ch_index = iwl4965_eeprom_band_4;
5272                 break;
5273         case 5:         /* 5.2GHz band */
5274                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5275                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5276                 *eeprom_ch_index = iwl4965_eeprom_band_5;
5277                 break;
5278         case 6:
5279                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5280                 *eeprom_ch_info = priv->eeprom.band_24_channels;
5281                 *eeprom_ch_index = iwl4965_eeprom_band_6;
5282                 break;
5283         case 7:
5284                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5285                 *eeprom_ch_info = priv->eeprom.band_52_channels;
5286                 *eeprom_ch_index = iwl4965_eeprom_band_7;
5287                 break;
5288         default:
5289                 BUG();
5290                 return;
5291         }
5292 }
5293
5294 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5295                                                     int phymode, u16 channel)
5296 {
5297         int i;
5298
5299         switch (phymode) {
5300         case MODE_IEEE80211A:
5301                 for (i = 14; i < priv->channel_count; i++) {
5302                         if (priv->channel_info[i].channel == channel)
5303                                 return &priv->channel_info[i];
5304                 }
5305                 break;
5306
5307         case MODE_IEEE80211B:
5308         case MODE_IEEE80211G:
5309                 if (channel >= 1 && channel <= 14)
5310                         return &priv->channel_info[channel - 1];
5311                 break;
5312
5313         }
5314
5315         return NULL;
5316 }
5317
5318 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5319                             ? # x " " : "")
5320
5321 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5322 {
5323         int eeprom_ch_count = 0;
5324         const u8 *eeprom_ch_index = NULL;
5325         const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5326         int band, ch;
5327         struct iwl4965_channel_info *ch_info;
5328
5329         if (priv->channel_count) {
5330                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5331                 return 0;
5332         }
5333
5334         if (priv->eeprom.version < 0x2f) {
5335                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5336                             priv->eeprom.version);
5337                 return -EINVAL;
5338         }
5339
5340         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5341
5342         priv->channel_count =
5343             ARRAY_SIZE(iwl4965_eeprom_band_1) +
5344             ARRAY_SIZE(iwl4965_eeprom_band_2) +
5345             ARRAY_SIZE(iwl4965_eeprom_band_3) +
5346             ARRAY_SIZE(iwl4965_eeprom_band_4) +
5347             ARRAY_SIZE(iwl4965_eeprom_band_5);
5348
5349         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5350
5351         priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5352                                      priv->channel_count, GFP_KERNEL);
5353         if (!priv->channel_info) {
5354                 IWL_ERROR("Could not allocate channel_info\n");
5355                 priv->channel_count = 0;
5356                 return -ENOMEM;
5357         }
5358
5359         ch_info = priv->channel_info;
5360
5361         /* Loop through the 5 EEPROM bands adding them in order to the
5362          * channel map we maintain (that contains additional information than
5363          * what just in the EEPROM) */
5364         for (band = 1; band <= 5; band++) {
5365
5366                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5367                                         &eeprom_ch_info, &eeprom_ch_index);
5368
5369                 /* Loop through each band adding each of the channels */
5370                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5371                         ch_info->channel = eeprom_ch_index[ch];
5372                         ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5373                             MODE_IEEE80211A;
5374
5375                         /* permanently store EEPROM's channel regulatory flags
5376                          *   and max power in channel info database. */
5377                         ch_info->eeprom = eeprom_ch_info[ch];
5378
5379                         /* Copy the run-time flags so they are there even on
5380                          * invalid channels */
5381                         ch_info->flags = eeprom_ch_info[ch].flags;
5382
5383                         if (!(is_channel_valid(ch_info))) {
5384                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5385                                                "No traffic\n",
5386                                                ch_info->channel,
5387                                                ch_info->flags,
5388                                                is_channel_a_band(ch_info) ?
5389                                                "5.2" : "2.4");
5390                                 ch_info++;
5391                                 continue;
5392                         }
5393
5394                         /* Initialize regulatory-based run-time data */
5395                         ch_info->max_power_avg = ch_info->curr_txpow =
5396                             eeprom_ch_info[ch].max_power_avg;
5397                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5398                         ch_info->min_power = 0;
5399
5400                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5401                                        " %ddBm): Ad-Hoc %ssupported\n",
5402                                        ch_info->channel,
5403                                        is_channel_a_band(ch_info) ?
5404                                        "5.2" : "2.4",
5405                                        CHECK_AND_PRINT(IBSS),
5406                                        CHECK_AND_PRINT(ACTIVE),
5407                                        CHECK_AND_PRINT(RADAR),
5408                                        CHECK_AND_PRINT(WIDE),
5409                                        CHECK_AND_PRINT(NARROW),
5410                                        CHECK_AND_PRINT(DFS),
5411                                        eeprom_ch_info[ch].flags,
5412                                        eeprom_ch_info[ch].max_power_avg,
5413                                        ((eeprom_ch_info[ch].
5414                                          flags & EEPROM_CHANNEL_IBSS)
5415                                         && !(eeprom_ch_info[ch].
5416                                              flags & EEPROM_CHANNEL_RADAR))
5417                                        ? "" : "not ");
5418
5419                         /* Set the user_txpower_limit to the highest power
5420                          * supported by any channel */
5421                         if (eeprom_ch_info[ch].max_power_avg >
5422                             priv->user_txpower_limit)
5423                                 priv->user_txpower_limit =
5424                                     eeprom_ch_info[ch].max_power_avg;
5425
5426                         ch_info++;
5427                 }
5428         }
5429
5430         for (band = 6; band <= 7; band++) {
5431                 int phymode;
5432                 u8 fat_extension_chan;
5433
5434                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5435                                         &eeprom_ch_info, &eeprom_ch_index);
5436
5437                 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5438                 /* Loop through each band adding each of the channels */
5439                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5440
5441                         if ((band == 6) &&
5442                             ((eeprom_ch_index[ch] == 5) ||
5443                             (eeprom_ch_index[ch] == 6) ||
5444                             (eeprom_ch_index[ch] == 7)))
5445                                fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5446                         else
5447                                 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5448
5449                         iwl4965_set_fat_chan_info(priv, phymode,
5450                                                   eeprom_ch_index[ch],
5451                                                   &(eeprom_ch_info[ch]),
5452                                                   fat_extension_chan);
5453
5454                         iwl4965_set_fat_chan_info(priv, phymode,
5455                                                   (eeprom_ch_index[ch] + 4),
5456                                                   &(eeprom_ch_info[ch]),
5457                                                   HT_IE_EXT_CHANNEL_BELOW);
5458                 }
5459         }
5460
5461         return 0;
5462 }
5463
5464 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5465  * sending probe req.  This should be set long enough to hear probe responses
5466  * from more than one AP.  */
5467 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5468 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5469
5470 /* For faster active scanning, scan will move to the next channel if fewer than
5471  * PLCP_QUIET_THRESH packets are heard on this channel within
5472  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5473  * time if it's a quiet channel (nothing responded to our probe, and there's
5474  * no other traffic).
5475  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5476 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5477 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5478
5479 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5480  * Must be set longer than active dwell time.
5481  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5482 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5483 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5484 #define IWL_PASSIVE_DWELL_BASE      (100)
5485 #define IWL_CHANNEL_TUNE_TIME       5
5486
5487 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv, int phymode)
5488 {
5489         if (phymode == MODE_IEEE80211A)
5490                 return IWL_ACTIVE_DWELL_TIME_52;
5491         else
5492                 return IWL_ACTIVE_DWELL_TIME_24;
5493 }
5494
5495 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv, int phymode)
5496 {
5497         u16 active = iwl4965_get_active_dwell_time(priv, phymode);
5498         u16 passive = (phymode != MODE_IEEE80211A) ?
5499             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5500             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5501
5502         if (iwl4965_is_associated(priv)) {
5503                 /* If we're associated, we clamp the maximum passive
5504                  * dwell time to be 98% of the beacon interval (minus
5505                  * 2 * channel tune time) */
5506                 passive = priv->beacon_int;
5507                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5508                         passive = IWL_PASSIVE_DWELL_BASE;
5509                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5510         }
5511
5512         if (passive <= active)
5513                 passive = active + 1;
5514
5515         return passive;
5516 }
5517
5518 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv, int phymode,
5519                                      u8 is_active, u8 direct_mask,
5520                                      struct iwl4965_scan_channel *scan_ch)
5521 {
5522         const struct ieee80211_channel *channels = NULL;
5523         const struct ieee80211_hw_mode *hw_mode;
5524         const struct iwl4965_channel_info *ch_info;
5525         u16 passive_dwell = 0;
5526         u16 active_dwell = 0;
5527         int added, i;
5528
5529         hw_mode = iwl4965_get_hw_mode(priv, phymode);
5530         if (!hw_mode)
5531                 return 0;
5532
5533         channels = hw_mode->channels;
5534
5535         active_dwell = iwl4965_get_active_dwell_time(priv, phymode);
5536         passive_dwell = iwl4965_get_passive_dwell_time(priv, phymode);
5537
5538         for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5539                 if (channels[i].chan ==
5540                     le16_to_cpu(priv->active_rxon.channel)) {
5541                         if (iwl4965_is_associated(priv)) {
5542                                 IWL_DEBUG_SCAN
5543                                     ("Skipping current channel %d\n",
5544                                      le16_to_cpu(priv->active_rxon.channel));
5545                                 continue;
5546                         }
5547                 } else if (priv->only_active_channel)
5548                         continue;
5549
5550                 scan_ch->channel = channels[i].chan;
5551
5552                 ch_info = iwl4965_get_channel_info(priv, phymode, scan_ch->channel);
5553                 if (!is_channel_valid(ch_info)) {
5554                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5555                                        scan_ch->channel);
5556                         continue;
5557                 }
5558
5559                 if (!is_active || is_channel_passive(ch_info) ||
5560                     !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5561                         scan_ch->type = 0;      /* passive */
5562                 else
5563                         scan_ch->type = 1;      /* active */
5564
5565                 if (scan_ch->type & 1)
5566                         scan_ch->type |= (direct_mask << 1);
5567
5568                 if (is_channel_narrow(ch_info))
5569                         scan_ch->type |= (1 << 7);
5570
5571                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5572                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5573
5574                 /* Set power levels to defaults */
5575                 scan_ch->tpc.dsp_atten = 110;
5576                 /* scan_pwr_info->tpc.dsp_atten; */
5577
5578                 /*scan_pwr_info->tpc.tx_gain; */
5579                 if (phymode == MODE_IEEE80211A)
5580                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5581                 else {
5582                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5583                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5584                          * power level
5585                          scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5586                          */
5587                 }
5588
5589                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5590                                scan_ch->channel,
5591                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5592                                (scan_ch->type & 1) ?
5593                                active_dwell : passive_dwell);
5594
5595                 scan_ch++;
5596                 added++;
5597         }
5598
5599         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5600         return added;
5601 }
5602
5603 static void iwl4965_reset_channel_flag(struct iwl4965_priv *priv)
5604 {
5605         int i, j;
5606         for (i = 0; i < 3; i++) {
5607                 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5608                 for (j = 0; j < hw_mode->num_channels; j++)
5609                         hw_mode->channels[j].flag = hw_mode->channels[j].val;
5610         }
5611 }
5612
5613 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5614                               struct ieee80211_rate *rates)
5615 {
5616         int i;
5617
5618         for (i = 0; i < IWL_RATE_COUNT; i++) {
5619                 rates[i].rate = iwl4965_rates[i].ieee * 5;
5620                 rates[i].val = i; /* Rate scaling will work on indexes */
5621                 rates[i].val2 = i;
5622                 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5623                 /* Only OFDM have the bits-per-symbol set */
5624                 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5625                         rates[i].flags |= IEEE80211_RATE_OFDM;
5626                 else {
5627                         /*
5628                          * If CCK 1M then set rate flag to CCK else CCK_2
5629                          * which is CCK | PREAMBLE2
5630                          */
5631                         rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5632                                 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5633                 }
5634
5635                 /* Set up which ones are basic rates... */
5636                 if (IWL_BASIC_RATES_MASK & (1 << i))
5637                         rates[i].flags |= IEEE80211_RATE_BASIC;
5638         }
5639 }
5640
5641 /**
5642  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5643  */
5644 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5645 {
5646         struct iwl4965_channel_info *ch;
5647         struct ieee80211_hw_mode *modes;
5648         struct ieee80211_channel *channels;
5649         struct ieee80211_channel *geo_ch;
5650         struct ieee80211_rate *rates;
5651         int i = 0;
5652         enum {
5653                 A = 0,
5654                 B = 1,
5655                 G = 2,
5656                 A_11N = 3,
5657                 G_11N = 4,
5658         };
5659         int mode_count = 5;
5660
5661         if (priv->modes) {
5662                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5663                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5664                 return 0;
5665         }
5666
5667         modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5668                         GFP_KERNEL);
5669         if (!modes)
5670                 return -ENOMEM;
5671
5672         channels = kzalloc(sizeof(struct ieee80211_channel) *
5673                            priv->channel_count, GFP_KERNEL);
5674         if (!channels) {
5675                 kfree(modes);
5676                 return -ENOMEM;
5677         }
5678
5679         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5680                         GFP_KERNEL);
5681         if (!rates) {
5682                 kfree(modes);
5683                 kfree(channels);
5684                 return -ENOMEM;
5685         }
5686
5687         /* 0 = 802.11a
5688          * 1 = 802.11b
5689          * 2 = 802.11g
5690          */
5691
5692         /* 5.2GHz channels start after the 2.4GHz channels */
5693         modes[A].mode = MODE_IEEE80211A;
5694         modes[A].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5695         modes[A].rates = rates;
5696         modes[A].num_rates = 8; /* just OFDM */
5697         modes[A].rates = &rates[4];
5698         modes[A].num_channels = 0;
5699
5700         modes[B].mode = MODE_IEEE80211B;
5701         modes[B].channels = channels;
5702         modes[B].rates = rates;
5703         modes[B].num_rates = 4; /* just CCK */
5704         modes[B].num_channels = 0;
5705
5706         modes[G].mode = MODE_IEEE80211G;
5707         modes[G].channels = channels;
5708         modes[G].rates = rates;
5709         modes[G].num_rates = 12;        /* OFDM & CCK */
5710         modes[G].num_channels = 0;
5711
5712         modes[G_11N].mode = MODE_IEEE80211G;
5713         modes[G_11N].channels = channels;
5714         modes[G_11N].num_rates = 13;        /* OFDM & CCK */
5715         modes[G_11N].rates = rates;
5716         modes[G_11N].num_channels = 0;
5717
5718         modes[A_11N].mode = MODE_IEEE80211A;
5719         modes[A_11N].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5720         modes[A_11N].rates = &rates[4];
5721         modes[A_11N].num_rates = 9; /* just OFDM */
5722         modes[A_11N].num_channels = 0;
5723
5724         priv->ieee_channels = channels;
5725         priv->ieee_rates = rates;
5726
5727         iwl4965_init_hw_rates(priv, rates);
5728
5729         for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5730                 ch = &priv->channel_info[i];
5731
5732                 if (!is_channel_valid(ch)) {
5733                         IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5734                                     "skipping.\n",
5735                                     ch->channel, is_channel_a_band(ch) ?
5736                                     "5.2" : "2.4");
5737                         continue;
5738                 }
5739
5740                 if (is_channel_a_band(ch)) {
5741                         geo_ch = &modes[A].channels[modes[A].num_channels++];
5742                         modes[A_11N].num_channels++;
5743                 } else {
5744                         geo_ch = &modes[B].channels[modes[B].num_channels++];
5745                         modes[G].num_channels++;
5746                         modes[G_11N].num_channels++;
5747                 }
5748
5749                 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5750                 geo_ch->chan = ch->channel;
5751                 geo_ch->power_level = ch->max_power_avg;
5752                 geo_ch->antenna_max = 0xff;
5753
5754                 if (is_channel_valid(ch)) {
5755                         geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5756                         if (ch->flags & EEPROM_CHANNEL_IBSS)
5757                                 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5758
5759                         if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5760                                 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5761
5762                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5763                                 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5764
5765                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5766                                 priv->max_channel_txpower_limit =
5767                                     ch->max_power_avg;
5768                 }
5769
5770                 geo_ch->val = geo_ch->flag;
5771         }
5772
5773         if ((modes[A].num_channels == 0) && priv->is_abg) {
5774                 printk(KERN_INFO DRV_NAME
5775                        ": Incorrectly detected BG card as ABG.  Please send "
5776                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5777                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5778                 priv->is_abg = 0;
5779         }
5780
5781         printk(KERN_INFO DRV_NAME
5782                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5783                modes[G].num_channels, modes[A].num_channels);
5784
5785         /*
5786          * NOTE:  We register these in preference of order -- the
5787          * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5788          * a phymode based on rates or AP capabilities but seems to
5789          * configure it purely on if the channel being configured
5790          * is supported by a mode -- and the first match is taken
5791          */
5792
5793         if (modes[G].num_channels)
5794                 ieee80211_register_hwmode(priv->hw, &modes[G]);
5795         if (modes[B].num_channels)
5796                 ieee80211_register_hwmode(priv->hw, &modes[B]);
5797         if (modes[A].num_channels)
5798                 ieee80211_register_hwmode(priv->hw, &modes[A]);
5799
5800         priv->modes = modes;
5801         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5802
5803         return 0;
5804 }
5805
5806 /******************************************************************************
5807  *
5808  * uCode download functions
5809  *
5810  ******************************************************************************/
5811
5812 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5813 {
5814         if (priv->ucode_code.v_addr != NULL) {
5815                 pci_free_consistent(priv->pci_dev,
5816                                     priv->ucode_code.len,
5817                                     priv->ucode_code.v_addr,
5818                                     priv->ucode_code.p_addr);
5819                 priv->ucode_code.v_addr = NULL;
5820         }
5821         if (priv->ucode_data.v_addr != NULL) {
5822                 pci_free_consistent(priv->pci_dev,
5823                                     priv->ucode_data.len,
5824                                     priv->ucode_data.v_addr,
5825                                     priv->ucode_data.p_addr);
5826                 priv->ucode_data.v_addr = NULL;
5827         }
5828         if (priv->ucode_data_backup.v_addr != NULL) {
5829                 pci_free_consistent(priv->pci_dev,
5830                                     priv->ucode_data_backup.len,
5831                                     priv->ucode_data_backup.v_addr,
5832                                     priv->ucode_data_backup.p_addr);
5833                 priv->ucode_data_backup.v_addr = NULL;
5834         }
5835         if (priv->ucode_init.v_addr != NULL) {
5836                 pci_free_consistent(priv->pci_dev,
5837                                     priv->ucode_init.len,
5838                                     priv->ucode_init.v_addr,
5839                                     priv->ucode_init.p_addr);
5840                 priv->ucode_init.v_addr = NULL;
5841         }
5842         if (priv->ucode_init_data.v_addr != NULL) {
5843                 pci_free_consistent(priv->pci_dev,
5844                                     priv->ucode_init_data.len,
5845                                     priv->ucode_init_data.v_addr,
5846                                     priv->ucode_init_data.p_addr);
5847                 priv->ucode_init_data.v_addr = NULL;
5848         }
5849         if (priv->ucode_boot.v_addr != NULL) {
5850                 pci_free_consistent(priv->pci_dev,
5851                                     priv->ucode_boot.len,
5852                                     priv->ucode_boot.v_addr,
5853                                     priv->ucode_boot.p_addr);
5854                 priv->ucode_boot.v_addr = NULL;
5855         }
5856 }
5857
5858 /**
5859  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5860  *     looking at all data.
5861  */
5862 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 * image, u32 len)
5863 {
5864         u32 val;
5865         u32 save_len = len;
5866         int rc = 0;
5867         u32 errcnt;
5868
5869         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5870
5871         rc = iwl4965_grab_nic_access(priv);
5872         if (rc)
5873                 return rc;
5874
5875         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5876
5877         errcnt = 0;
5878         for (; len > 0; len -= sizeof(u32), image++) {
5879                 /* read data comes through single port, auto-incr addr */
5880                 /* NOTE: Use the debugless read so we don't flood kernel log
5881                  * if IWL_DL_IO is set */
5882                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5883                 if (val != le32_to_cpu(*image)) {
5884                         IWL_ERROR("uCode INST section is invalid at "
5885                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5886                                   save_len - len, val, le32_to_cpu(*image));
5887                         rc = -EIO;
5888                         errcnt++;
5889                         if (errcnt >= 20)
5890                                 break;
5891                 }
5892         }
5893
5894         iwl4965_release_nic_access(priv);
5895
5896         if (!errcnt)
5897                 IWL_DEBUG_INFO
5898                     ("ucode image in INSTRUCTION memory is good\n");
5899
5900         return rc;
5901 }
5902
5903
5904 /**
5905  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5906  *   using sample data 100 bytes apart.  If these sample points are good,
5907  *   it's a pretty good bet that everything between them is good, too.
5908  */
5909 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
5910 {
5911         u32 val;
5912         int rc = 0;
5913         u32 errcnt = 0;
5914         u32 i;
5915
5916         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5917
5918         rc = iwl4965_grab_nic_access(priv);
5919         if (rc)
5920                 return rc;
5921
5922         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5923                 /* read data comes through single port, auto-incr addr */
5924                 /* NOTE: Use the debugless read so we don't flood kernel log
5925                  * if IWL_DL_IO is set */
5926                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5927                         i + RTC_INST_LOWER_BOUND);
5928                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5929                 if (val != le32_to_cpu(*image)) {
5930 #if 0 /* Enable this if you want to see details */
5931                         IWL_ERROR("uCode INST section is invalid at "
5932                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5933                                   i, val, *image);
5934 #endif
5935                         rc = -EIO;
5936                         errcnt++;
5937                         if (errcnt >= 3)
5938                                 break;
5939                 }
5940         }
5941
5942         iwl4965_release_nic_access(priv);
5943
5944         return rc;
5945 }
5946
5947
5948 /**
5949  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5950  *    and verify its contents
5951  */
5952 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
5953 {
5954         __le32 *image;
5955         u32 len;
5956         int rc = 0;
5957
5958         /* Try bootstrap */
5959         image = (__le32 *)priv->ucode_boot.v_addr;
5960         len = priv->ucode_boot.len;
5961         rc = iwl4965_verify_inst_sparse(priv, image, len);
5962         if (rc == 0) {
5963                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5964                 return 0;
5965         }
5966
5967         /* Try initialize */
5968         image = (__le32 *)priv->ucode_init.v_addr;
5969         len = priv->ucode_init.len;
5970         rc = iwl4965_verify_inst_sparse(priv, image, len);
5971         if (rc == 0) {
5972                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5973                 return 0;
5974         }
5975
5976         /* Try runtime/protocol */
5977         image = (__le32 *)priv->ucode_code.v_addr;
5978         len = priv->ucode_code.len;
5979         rc = iwl4965_verify_inst_sparse(priv, image, len);
5980         if (rc == 0) {
5981                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5982                 return 0;
5983         }
5984
5985         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5986
5987         /* Show first several data entries in instruction SRAM.
5988          * Selection of bootstrap image is arbitrary. */
5989         image = (__le32 *)priv->ucode_boot.v_addr;
5990         len = priv->ucode_boot.len;
5991         rc = iwl4965_verify_inst_full(priv, image, len);
5992
5993         return rc;
5994 }
5995
5996
5997 /* check contents of special bootstrap uCode SRAM */
5998 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
5999 {
6000         __le32 *image = priv->ucode_boot.v_addr;
6001         u32 len = priv->ucode_boot.len;
6002         u32 reg;
6003         u32 val;
6004
6005         IWL_DEBUG_INFO("Begin verify bsm\n");
6006
6007         /* verify BSM SRAM contents */
6008         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6009         for (reg = BSM_SRAM_LOWER_BOUND;
6010              reg < BSM_SRAM_LOWER_BOUND + len;
6011              reg += sizeof(u32), image ++) {
6012                 val = iwl4965_read_prph(priv, reg);
6013                 if (val != le32_to_cpu(*image)) {
6014                         IWL_ERROR("BSM uCode verification failed at "
6015                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6016                                   BSM_SRAM_LOWER_BOUND,
6017                                   reg - BSM_SRAM_LOWER_BOUND, len,
6018                                   val, le32_to_cpu(*image));
6019                         return -EIO;
6020                 }
6021         }
6022
6023         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6024
6025         return 0;
6026 }
6027
6028 /**
6029  * iwl4965_load_bsm - Load bootstrap instructions
6030  *
6031  * BSM operation:
6032  *
6033  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6034  * in special SRAM that does not power down during RFKILL.  When powering back
6035  * up after power-saving sleeps (or during initial uCode load), the BSM loads
6036  * the bootstrap program into the on-board processor, and starts it.
6037  *
6038  * The bootstrap program loads (via DMA) instructions and data for a new
6039  * program from host DRAM locations indicated by the host driver in the
6040  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
6041  * automatically.
6042  *
6043  * When initializing the NIC, the host driver points the BSM to the
6044  * "initialize" uCode image.  This uCode sets up some internal data, then
6045  * notifies host via "initialize alive" that it is complete.
6046  *
6047  * The host then replaces the BSM_DRAM_* pointer values to point to the
6048  * normal runtime uCode instructions and a backup uCode data cache buffer
6049  * (filled initially with starting data values for the on-board processor),
6050  * then triggers the "initialize" uCode to load and launch the runtime uCode,
6051  * which begins normal operation.
6052  *
6053  * When doing a power-save shutdown, runtime uCode saves data SRAM into
6054  * the backup data cache in DRAM before SRAM is powered down.
6055  *
6056  * When powering back up, the BSM loads the bootstrap program.  This reloads
6057  * the runtime uCode instructions and the backup data cache into SRAM,
6058  * and re-launches the runtime uCode from where it left off.
6059  */
6060 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6061 {
6062         __le32 *image = priv->ucode_boot.v_addr;
6063         u32 len = priv->ucode_boot.len;
6064         dma_addr_t pinst;
6065         dma_addr_t pdata;
6066         u32 inst_len;
6067         u32 data_len;
6068         int rc;
6069         int i;
6070         u32 done;
6071         u32 reg_offset;
6072
6073         IWL_DEBUG_INFO("Begin load bsm\n");
6074
6075         /* make sure bootstrap program is no larger than BSM's SRAM size */
6076         if (len > IWL_MAX_BSM_SIZE)
6077                 return -EINVAL;
6078
6079         /* Tell bootstrap uCode where to find the "Initialize" uCode
6080          *   in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6081          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
6082          *        after the "initialize" uCode has run, to point to
6083          *        runtime/protocol instructions and backup data cache. */
6084         pinst = priv->ucode_init.p_addr >> 4;
6085         pdata = priv->ucode_init_data.p_addr >> 4;
6086         inst_len = priv->ucode_init.len;
6087         data_len = priv->ucode_init_data.len;
6088
6089         rc = iwl4965_grab_nic_access(priv);
6090         if (rc)
6091                 return rc;
6092
6093         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6094         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6095         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6096         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6097
6098         /* Fill BSM memory with bootstrap instructions */
6099         for (reg_offset = BSM_SRAM_LOWER_BOUND;
6100              reg_offset < BSM_SRAM_LOWER_BOUND + len;
6101              reg_offset += sizeof(u32), image++)
6102                 _iwl4965_write_prph(priv, reg_offset,
6103                                           le32_to_cpu(*image));
6104
6105         rc = iwl4965_verify_bsm(priv);
6106         if (rc) {
6107                 iwl4965_release_nic_access(priv);
6108                 return rc;
6109         }
6110
6111         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6112         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6113         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6114                                  RTC_INST_LOWER_BOUND);
6115         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6116
6117         /* Load bootstrap code into instruction SRAM now,
6118          *   to prepare to load "initialize" uCode */
6119         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6120                 BSM_WR_CTRL_REG_BIT_START);
6121
6122         /* Wait for load of bootstrap uCode to finish */
6123         for (i = 0; i < 100; i++) {
6124                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6125                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6126                         break;
6127                 udelay(10);
6128         }
6129         if (i < 100)
6130                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6131         else {
6132                 IWL_ERROR("BSM write did not complete!\n");
6133                 return -EIO;
6134         }
6135
6136         /* Enable future boot loads whenever power management unit triggers it
6137          *   (e.g. when powering back up after power-save shutdown) */
6138         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6139                 BSM_WR_CTRL_REG_BIT_START_EN);
6140
6141         iwl4965_release_nic_access(priv);
6142
6143         return 0;
6144 }
6145
6146 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6147 {
6148         /* Remove all resets to allow NIC to operate */
6149         iwl4965_write32(priv, CSR_RESET, 0);
6150 }
6151
6152 static int iwl4965_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
6153 {
6154         desc->v_addr = pci_alloc_consistent(pci_dev, desc->len, &desc->p_addr);
6155         return (desc->v_addr != NULL) ? 0 : -ENOMEM;
6156 }
6157
6158 /**
6159  * iwl4965_read_ucode - Read uCode images from disk file.
6160  *
6161  * Copy into buffers for card to fetch via bus-mastering
6162  */
6163 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6164 {
6165         struct iwl4965_ucode *ucode;
6166         int ret;
6167         const struct firmware *ucode_raw;
6168         const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6169         u8 *src;
6170         size_t len;
6171         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6172
6173         /* Ask kernel firmware_class module to get the boot firmware off disk.
6174          * request_firmware() is synchronous, file is in memory on return. */
6175         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6176         if (ret < 0) {
6177                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6178                                         name, ret);
6179                 goto error;
6180         }
6181
6182         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6183                        name, ucode_raw->size);
6184
6185         /* Make sure that we got at least our header! */
6186         if (ucode_raw->size < sizeof(*ucode)) {
6187                 IWL_ERROR("File size way too small!\n");
6188                 ret = -EINVAL;
6189                 goto err_release;
6190         }
6191
6192         /* Data from ucode file:  header followed by uCode images */
6193         ucode = (void *)ucode_raw->data;
6194
6195         ver = le32_to_cpu(ucode->ver);
6196         inst_size = le32_to_cpu(ucode->inst_size);
6197         data_size = le32_to_cpu(ucode->data_size);
6198         init_size = le32_to_cpu(ucode->init_size);
6199         init_data_size = le32_to_cpu(ucode->init_data_size);
6200         boot_size = le32_to_cpu(ucode->boot_size);
6201
6202         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6203         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6204                        inst_size);
6205         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6206                        data_size);
6207         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6208                        init_size);
6209         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6210                        init_data_size);
6211         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6212                        boot_size);
6213
6214         /* Verify size of file vs. image size info in file's header */
6215         if (ucode_raw->size < sizeof(*ucode) +
6216                 inst_size + data_size + init_size +
6217                 init_data_size + boot_size) {
6218
6219                 IWL_DEBUG_INFO("uCode file size %d too small\n",
6220                                (int)ucode_raw->size);
6221                 ret = -EINVAL;
6222                 goto err_release;
6223         }
6224
6225         /* Verify that uCode images will fit in card's SRAM */
6226         if (inst_size > IWL_MAX_INST_SIZE) {
6227                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6228                                inst_size);
6229                 ret = -EINVAL;
6230                 goto err_release;
6231         }
6232
6233         if (data_size > IWL_MAX_DATA_SIZE) {
6234                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6235                                 data_size);
6236                 ret = -EINVAL;
6237                 goto err_release;
6238         }
6239         if (init_size > IWL_MAX_INST_SIZE) {
6240                 IWL_DEBUG_INFO
6241                     ("uCode init instr len %d too large to fit in\n",
6242                       init_size);
6243                 ret = -EINVAL;
6244                 goto err_release;
6245         }
6246         if (init_data_size > IWL_MAX_DATA_SIZE) {
6247                 IWL_DEBUG_INFO
6248                     ("uCode init data len %d too large to fit in\n",
6249                       init_data_size);
6250                 ret = -EINVAL;
6251                 goto err_release;
6252         }
6253         if (boot_size > IWL_MAX_BSM_SIZE) {
6254                 IWL_DEBUG_INFO
6255                     ("uCode boot instr len %d too large to fit in\n",
6256                       boot_size);
6257                 ret = -EINVAL;
6258                 goto err_release;
6259         }
6260
6261         /* Allocate ucode buffers for card's bus-master loading ... */
6262
6263         /* Runtime instructions and 2 copies of data:
6264          * 1) unmodified from disk
6265          * 2) backup cache for save/restore during power-downs */
6266         priv->ucode_code.len = inst_size;
6267         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6268
6269         priv->ucode_data.len = data_size;
6270         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6271
6272         priv->ucode_data_backup.len = data_size;
6273         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6274
6275         /* Initialization instructions and data */
6276         if (init_size && init_data_size) {
6277                 priv->ucode_init.len = init_size;
6278                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6279
6280                 priv->ucode_init_data.len = init_data_size;
6281                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6282
6283                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6284                         goto err_pci_alloc;
6285         }
6286
6287         /* Bootstrap (instructions only, no data) */
6288         if (boot_size) {
6289                 priv->ucode_boot.len = boot_size;
6290                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6291
6292                 if (!priv->ucode_boot.v_addr)
6293                         goto err_pci_alloc;
6294         }
6295
6296         /* Copy images into buffers for card's bus-master reads ... */
6297
6298         /* Runtime instructions (first block of data in file) */
6299         src = &ucode->data[0];
6300         len = priv->ucode_code.len;
6301         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6302         memcpy(priv->ucode_code.v_addr, src, len);
6303         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6304                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6305
6306         /* Runtime data (2nd block)
6307          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
6308         src = &ucode->data[inst_size];
6309         len = priv->ucode_data.len;
6310         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6311         memcpy(priv->ucode_data.v_addr, src, len);
6312         memcpy(priv->ucode_data_backup.v_addr, src, len);
6313
6314         /* Initialization instructions (3rd block) */
6315         if (init_size) {
6316                 src = &ucode->data[inst_size + data_size];
6317                 len = priv->ucode_init.len;
6318                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6319                                 len);
6320                 memcpy(priv->ucode_init.v_addr, src, len);
6321         }
6322
6323         /* Initialization data (4th block) */
6324         if (init_data_size) {
6325                 src = &ucode->data[inst_size + data_size + init_size];
6326                 len = priv->ucode_init_data.len;
6327                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6328                                len);
6329                 memcpy(priv->ucode_init_data.v_addr, src, len);
6330         }
6331
6332         /* Bootstrap instructions (5th block) */
6333         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6334         len = priv->ucode_boot.len;
6335         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6336         memcpy(priv->ucode_boot.v_addr, src, len);
6337
6338         /* We have our copies now, allow OS release its copies */
6339         release_firmware(ucode_raw);
6340         return 0;
6341
6342  err_pci_alloc:
6343         IWL_ERROR("failed to allocate pci memory\n");
6344         ret = -ENOMEM;
6345         iwl4965_dealloc_ucode_pci(priv);
6346
6347  err_release:
6348         release_firmware(ucode_raw);
6349
6350  error:
6351         return ret;
6352 }
6353
6354
6355 /**
6356  * iwl4965_set_ucode_ptrs - Set uCode address location
6357  *
6358  * Tell initialization uCode where to find runtime uCode.
6359  *
6360  * BSM registers initially contain pointers to initialization uCode.
6361  * We need to replace them to load runtime uCode inst and data,
6362  * and to save runtime data when powering down.
6363  */
6364 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6365 {
6366         dma_addr_t pinst;
6367         dma_addr_t pdata;
6368         int rc = 0;
6369         unsigned long flags;
6370
6371         /* bits 35:4 for 4965 */
6372         pinst = priv->ucode_code.p_addr >> 4;
6373         pdata = priv->ucode_data_backup.p_addr >> 4;
6374
6375         spin_lock_irqsave(&priv->lock, flags);
6376         rc = iwl4965_grab_nic_access(priv);
6377         if (rc) {
6378                 spin_unlock_irqrestore(&priv->lock, flags);
6379                 return rc;
6380         }
6381
6382         /* Tell bootstrap uCode where to find image to load */
6383         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6384         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6385         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6386                                  priv->ucode_data.len);
6387
6388         /* Inst bytecount must be last to set up, bit 31 signals uCode
6389          *   that all new ptr/size info is in place */
6390         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6391                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6392
6393         iwl4965_release_nic_access(priv);
6394
6395         spin_unlock_irqrestore(&priv->lock, flags);
6396
6397         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6398
6399         return rc;
6400 }
6401
6402 /**
6403  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6404  *
6405  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6406  *
6407  * The 4965 "initialize" ALIVE reply contains calibration data for:
6408  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
6409  *   (3945 does not contain this data).
6410  *
6411  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6412 */
6413 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6414 {
6415         /* Check alive response for "valid" sign from uCode */
6416         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6417                 /* We had an error bringing up the hardware, so take it
6418                  * all the way back down so we can try again */
6419                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6420                 goto restart;
6421         }
6422
6423         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6424          * This is a paranoid check, because we would not have gotten the
6425          * "initialize" alive if code weren't properly loaded.  */
6426         if (iwl4965_verify_ucode(priv)) {
6427                 /* Runtime instruction load was bad;
6428                  * take it all the way back down so we can try again */
6429                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6430                 goto restart;
6431         }
6432
6433         /* Calculate temperature */
6434         priv->temperature = iwl4965_get_temperature(priv);
6435
6436         /* Send pointers to protocol/runtime uCode image ... init code will
6437          * load and launch runtime uCode, which will send us another "Alive"
6438          * notification. */
6439         IWL_DEBUG_INFO("Initialization Alive received.\n");
6440         if (iwl4965_set_ucode_ptrs(priv)) {
6441                 /* Runtime instruction load won't happen;
6442                  * take it all the way back down so we can try again */
6443                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6444                 goto restart;
6445         }
6446         return;
6447
6448  restart:
6449         queue_work(priv->workqueue, &priv->restart);
6450 }
6451
6452
6453 /**
6454  * iwl4965_alive_start - called after REPLY_ALIVE notification received
6455  *                   from protocol/runtime uCode (initialization uCode's
6456  *                   Alive gets handled by iwl4965_init_alive_start()).
6457  */
6458 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6459 {
6460         int rc = 0;
6461
6462         IWL_DEBUG_INFO("Runtime Alive received.\n");
6463
6464         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6465                 /* We had an error bringing up the hardware, so take it
6466                  * all the way back down so we can try again */
6467                 IWL_DEBUG_INFO("Alive failed.\n");
6468                 goto restart;
6469         }
6470
6471         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6472          * This is a paranoid check, because we would not have gotten the
6473          * "runtime" alive if code weren't properly loaded.  */
6474         if (iwl4965_verify_ucode(priv)) {
6475                 /* Runtime instruction load was bad;
6476                  * take it all the way back down so we can try again */
6477                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6478                 goto restart;
6479         }
6480
6481         iwl4965_clear_stations_table(priv);
6482
6483         rc = iwl4965_alive_notify(priv);
6484         if (rc) {
6485                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6486                             rc);
6487                 goto restart;
6488         }
6489
6490         /* After the ALIVE response, we can process host commands */
6491         set_bit(STATUS_ALIVE, &priv->status);
6492
6493         /* Clear out the uCode error bit if it is set */
6494         clear_bit(STATUS_FW_ERROR, &priv->status);
6495
6496         rc = iwl4965_init_channel_map(priv);
6497         if (rc) {
6498                 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6499                 return;
6500         }
6501
6502         iwl4965_init_geos(priv);
6503
6504         if (iwl4965_is_rfkill(priv))
6505                 return;
6506
6507         if (!priv->mac80211_registered) {
6508                 /* Unlock so any user space entry points can call back into
6509                  * the driver without a deadlock... */
6510                 mutex_unlock(&priv->mutex);
6511                 iwl4965_rate_control_register(priv->hw);
6512                 rc = ieee80211_register_hw(priv->hw);
6513                 priv->hw->conf.beacon_int = 100;
6514                 mutex_lock(&priv->mutex);
6515
6516                 if (rc) {
6517                         iwl4965_rate_control_unregister(priv->hw);
6518                         IWL_ERROR("Failed to register network "
6519                                   "device (error %d)\n", rc);
6520                         return;
6521                 }
6522
6523                 priv->mac80211_registered = 1;
6524
6525                 iwl4965_reset_channel_flag(priv);
6526         } else
6527                 ieee80211_start_queues(priv->hw);
6528
6529         priv->active_rate = priv->rates_mask;
6530         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6531
6532         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6533
6534         if (iwl4965_is_associated(priv)) {
6535                 struct iwl4965_rxon_cmd *active_rxon =
6536                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6537
6538                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6539                        sizeof(priv->staging_rxon));
6540                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6541         } else {
6542                 /* Initialize our rx_config data */
6543                 iwl4965_connection_init_rx_config(priv);
6544                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6545         }
6546
6547         /* Configure BT coexistence */
6548         iwl4965_send_bt_config(priv);
6549
6550         /* Configure the adapter for unassociated operation */
6551         iwl4965_commit_rxon(priv);
6552
6553         /* At this point, the NIC is initialized and operational */
6554         priv->notif_missed_beacons = 0;
6555         set_bit(STATUS_READY, &priv->status);
6556
6557         iwl4965_rf_kill_ct_config(priv);
6558         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6559
6560         if (priv->error_recovering)
6561                 iwl4965_error_recovery(priv);
6562
6563         return;
6564
6565  restart:
6566         queue_work(priv->workqueue, &priv->restart);
6567 }
6568
6569 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6570
6571 static void __iwl4965_down(struct iwl4965_priv *priv)
6572 {
6573         unsigned long flags;
6574         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6575         struct ieee80211_conf *conf = NULL;
6576
6577         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6578
6579         conf = ieee80211_get_hw_conf(priv->hw);
6580
6581         if (!exit_pending)
6582                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6583
6584         iwl4965_clear_stations_table(priv);
6585
6586         /* Unblock any waiting calls */
6587         wake_up_interruptible_all(&priv->wait_command_queue);
6588
6589         /* Wipe out the EXIT_PENDING status bit if we are not actually
6590          * exiting the module */
6591         if (!exit_pending)
6592                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6593
6594         /* stop and reset the on-board processor */
6595         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6596
6597         /* tell the device to stop sending interrupts */
6598         iwl4965_disable_interrupts(priv);
6599
6600         if (priv->mac80211_registered)
6601                 ieee80211_stop_queues(priv->hw);
6602
6603         /* If we have not previously called iwl4965_init() then
6604          * clear all bits but the RF Kill and SUSPEND bits and return */
6605         if (!iwl4965_is_init(priv)) {
6606                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6607                                         STATUS_RF_KILL_HW |
6608                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6609                                         STATUS_RF_KILL_SW |
6610                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6611                                         STATUS_IN_SUSPEND;
6612                 goto exit;
6613         }
6614
6615         /* ...otherwise clear out all the status bits but the RF Kill and
6616          * SUSPEND bits and continue taking the NIC down. */
6617         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6618                                 STATUS_RF_KILL_HW |
6619                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6620                                 STATUS_RF_KILL_SW |
6621                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6622                                 STATUS_IN_SUSPEND |
6623                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6624                                 STATUS_FW_ERROR;
6625
6626         spin_lock_irqsave(&priv->lock, flags);
6627         iwl4965_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6628         spin_unlock_irqrestore(&priv->lock, flags);
6629
6630         iwl4965_hw_txq_ctx_stop(priv);
6631         iwl4965_hw_rxq_stop(priv);
6632
6633         spin_lock_irqsave(&priv->lock, flags);
6634         if (!iwl4965_grab_nic_access(priv)) {
6635                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6636                                          APMG_CLK_VAL_DMA_CLK_RQT);
6637                 iwl4965_release_nic_access(priv);
6638         }
6639         spin_unlock_irqrestore(&priv->lock, flags);
6640
6641         udelay(5);
6642
6643         iwl4965_hw_nic_stop_master(priv);
6644         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6645         iwl4965_hw_nic_reset(priv);
6646
6647  exit:
6648         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6649
6650         if (priv->ibss_beacon)
6651                 dev_kfree_skb(priv->ibss_beacon);
6652         priv->ibss_beacon = NULL;
6653
6654         /* clear out any free frames */
6655         iwl4965_clear_free_frames(priv);
6656 }
6657
6658 static void iwl4965_down(struct iwl4965_priv *priv)
6659 {
6660         mutex_lock(&priv->mutex);
6661         __iwl4965_down(priv);
6662         mutex_unlock(&priv->mutex);
6663
6664         iwl4965_cancel_deferred_work(priv);
6665 }
6666
6667 #define MAX_HW_RESTARTS 5
6668
6669 static int __iwl4965_up(struct iwl4965_priv *priv)
6670 {
6671         DECLARE_MAC_BUF(mac);
6672         int rc, i;
6673         u32 hw_rf_kill = 0;
6674
6675         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6676                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6677                 return -EIO;
6678         }
6679
6680         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6681                 IWL_WARNING("Radio disabled by SW RF kill (module "
6682                             "parameter)\n");
6683                 return 0;
6684         }
6685
6686         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6687                 IWL_ERROR("ucode not available for device bringup\n");
6688                 return -EIO;
6689         }
6690
6691         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6692
6693         rc = iwl4965_hw_nic_init(priv);
6694         if (rc) {
6695                 IWL_ERROR("Unable to int nic\n");
6696                 return rc;
6697         }
6698
6699         /* make sure rfkill handshake bits are cleared */
6700         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6701         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6702                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6703
6704         /* clear (again), then enable host interrupts */
6705         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6706         iwl4965_enable_interrupts(priv);
6707
6708         /* really make sure rfkill handshake bits are cleared */
6709         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6710         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6711
6712         /* Copy original ucode data image from disk into backup cache.
6713          * This will be used to initialize the on-board processor's
6714          * data SRAM for a clean start when the runtime program first loads. */
6715         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6716                         priv->ucode_data.len);
6717
6718         /* If platform's RF_KILL switch is set to KILL,
6719          * wait for BIT_INT_RF_KILL interrupt before loading uCode
6720          * and getting things started */
6721         if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
6722                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6723                 hw_rf_kill = 1;
6724
6725         if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6726                 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6727                 return 0;
6728         }
6729
6730         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6731
6732                 iwl4965_clear_stations_table(priv);
6733
6734                 /* load bootstrap state machine,
6735                  * load bootstrap program into processor's memory,
6736                  * prepare to load the "initialize" uCode */
6737                 rc = iwl4965_load_bsm(priv);
6738
6739                 if (rc) {
6740                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6741                         continue;
6742                 }
6743
6744                 /* start card; "initialize" will load runtime ucode */
6745                 iwl4965_nic_start(priv);
6746
6747                 /* MAC Address location in EEPROM same for 3945/4965 */
6748                 get_eeprom_mac(priv, priv->mac_addr);
6749                 IWL_DEBUG_INFO("MAC address: %s\n",
6750                                print_mac(mac, priv->mac_addr));
6751
6752                 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6753
6754                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6755
6756                 return 0;
6757         }
6758
6759         set_bit(STATUS_EXIT_PENDING, &priv->status);
6760         __iwl4965_down(priv);
6761
6762         /* tried to restart and config the device for as long as our
6763          * patience could withstand */
6764         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6765         return -EIO;
6766 }
6767
6768
6769 /*****************************************************************************
6770  *
6771  * Workqueue callbacks
6772  *
6773  *****************************************************************************/
6774
6775 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6776 {
6777         struct iwl4965_priv *priv =
6778             container_of(data, struct iwl4965_priv, init_alive_start.work);
6779
6780         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6781                 return;
6782
6783         mutex_lock(&priv->mutex);
6784         iwl4965_init_alive_start(priv);
6785         mutex_unlock(&priv->mutex);
6786 }
6787
6788 static void iwl4965_bg_alive_start(struct work_struct *data)
6789 {
6790         struct iwl4965_priv *priv =
6791             container_of(data, struct iwl4965_priv, alive_start.work);
6792
6793         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6794                 return;
6795
6796         mutex_lock(&priv->mutex);
6797         iwl4965_alive_start(priv);
6798         mutex_unlock(&priv->mutex);
6799 }
6800
6801 static void iwl4965_bg_rf_kill(struct work_struct *work)
6802 {
6803         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6804
6805         wake_up_interruptible(&priv->wait_command_queue);
6806
6807         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6808                 return;
6809
6810         mutex_lock(&priv->mutex);
6811
6812         if (!iwl4965_is_rfkill(priv)) {
6813                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6814                           "HW and/or SW RF Kill no longer active, restarting "
6815                           "device\n");
6816                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6817                         queue_work(priv->workqueue, &priv->restart);
6818         } else {
6819
6820                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6821                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6822                                           "disabled by SW switch\n");
6823                 else
6824                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6825                                     "Kill switch must be turned off for "
6826                                     "wireless networking to work.\n");
6827         }
6828         mutex_unlock(&priv->mutex);
6829 }
6830
6831 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6832
6833 static void iwl4965_bg_scan_check(struct work_struct *data)
6834 {
6835         struct iwl4965_priv *priv =
6836             container_of(data, struct iwl4965_priv, scan_check.work);
6837
6838         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6839                 return;
6840
6841         mutex_lock(&priv->mutex);
6842         if (test_bit(STATUS_SCANNING, &priv->status) ||
6843             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6844                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6845                           "Scan completion watchdog resetting adapter (%dms)\n",
6846                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6847
6848                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6849                         iwl4965_send_scan_abort(priv);
6850         }
6851         mutex_unlock(&priv->mutex);
6852 }
6853
6854 static void iwl4965_bg_request_scan(struct work_struct *data)
6855 {
6856         struct iwl4965_priv *priv =
6857             container_of(data, struct iwl4965_priv, request_scan);
6858         struct iwl4965_host_cmd cmd = {
6859                 .id = REPLY_SCAN_CMD,
6860                 .len = sizeof(struct iwl4965_scan_cmd),
6861                 .meta.flags = CMD_SIZE_HUGE,
6862         };
6863         int rc = 0;
6864         struct iwl4965_scan_cmd *scan;
6865         struct ieee80211_conf *conf = NULL;
6866         u8 direct_mask;
6867         int phymode;
6868
6869         conf = ieee80211_get_hw_conf(priv->hw);
6870
6871         mutex_lock(&priv->mutex);
6872
6873         if (!iwl4965_is_ready(priv)) {
6874                 IWL_WARNING("request scan called when driver not ready.\n");
6875                 goto done;
6876         }
6877
6878         /* Make sure the scan wasn't cancelled before this queued work
6879          * was given the chance to run... */
6880         if (!test_bit(STATUS_SCANNING, &priv->status))
6881                 goto done;
6882
6883         /* This should never be called or scheduled if there is currently
6884          * a scan active in the hardware. */
6885         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6886                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6887                                "Ignoring second request.\n");
6888                 rc = -EIO;
6889                 goto done;
6890         }
6891
6892         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6893                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6894                 goto done;
6895         }
6896
6897         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6898                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6899                 goto done;
6900         }
6901
6902         if (iwl4965_is_rfkill(priv)) {
6903                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6904                 goto done;
6905         }
6906
6907         if (!test_bit(STATUS_READY, &priv->status)) {
6908                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6909                 goto done;
6910         }
6911
6912         if (!priv->scan_bands) {
6913                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6914                 goto done;
6915         }
6916
6917         if (!priv->scan) {
6918                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6919                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6920                 if (!priv->scan) {
6921                         rc = -ENOMEM;
6922                         goto done;
6923                 }
6924         }
6925         scan = priv->scan;
6926         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6927
6928         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6929         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6930
6931         if (iwl4965_is_associated(priv)) {
6932                 u16 interval = 0;
6933                 u32 extra;
6934                 u32 suspend_time = 100;
6935                 u32 scan_suspend_time = 100;
6936                 unsigned long flags;
6937
6938                 IWL_DEBUG_INFO("Scanning while associated...\n");
6939
6940                 spin_lock_irqsave(&priv->lock, flags);
6941                 interval = priv->beacon_int;
6942                 spin_unlock_irqrestore(&priv->lock, flags);
6943
6944                 scan->suspend_time = 0;
6945                 scan->max_out_time = cpu_to_le32(200 * 1024);
6946                 if (!interval)
6947                         interval = suspend_time;
6948
6949                 extra = (suspend_time / interval) << 22;
6950                 scan_suspend_time = (extra |
6951                     ((suspend_time % interval) * 1024));
6952                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6953                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6954                                scan_suspend_time, interval);
6955         }
6956
6957         /* We should add the ability for user to lock to PASSIVE ONLY */
6958         if (priv->one_direct_scan) {
6959                 IWL_DEBUG_SCAN
6960                     ("Kicking off one direct scan for '%s'\n",
6961                      iwl4965_escape_essid(priv->direct_ssid,
6962                                       priv->direct_ssid_len));
6963                 scan->direct_scan[0].id = WLAN_EID_SSID;
6964                 scan->direct_scan[0].len = priv->direct_ssid_len;
6965                 memcpy(scan->direct_scan[0].ssid,
6966                        priv->direct_ssid, priv->direct_ssid_len);
6967                 direct_mask = 1;
6968         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6969                 scan->direct_scan[0].id = WLAN_EID_SSID;
6970                 scan->direct_scan[0].len = priv->essid_len;
6971                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6972                 direct_mask = 1;
6973         } else
6974                 direct_mask = 0;
6975
6976         /* We don't build a direct scan probe request; the uCode will do
6977          * that based on the direct_mask added to each channel entry */
6978         scan->tx_cmd.len = cpu_to_le16(
6979                 iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6980                         IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6981         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6982         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6983         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6984
6985         /* flags + rate selection */
6986
6987         scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
6988
6989         switch (priv->scan_bands) {
6990         case 2:
6991                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6992                 scan->tx_cmd.rate_n_flags =
6993                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6994                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6995
6996                 scan->good_CRC_th = 0;
6997                 phymode = MODE_IEEE80211G;
6998                 break;
6999
7000         case 1:
7001                 scan->tx_cmd.rate_n_flags =
7002                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7003                                 RATE_MCS_ANT_B_MSK);
7004                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7005                 phymode = MODE_IEEE80211A;
7006                 break;
7007
7008         default:
7009                 IWL_WARNING("Invalid scan band count\n");
7010                 goto done;
7011         }
7012
7013         /* select Rx chains */
7014
7015         /* Force use of chains B and C (0x6) for scan Rx.
7016          * Avoid A (0x1) because of its off-channel reception on A-band.
7017          * MIMO is not used here, but value is required to make uCode happy. */
7018         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7019                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7020                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7021                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7022
7023         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7024                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7025
7026         if (direct_mask)
7027                 IWL_DEBUG_SCAN
7028                     ("Initiating direct scan for %s.\n",
7029                      iwl4965_escape_essid(priv->essid, priv->essid_len));
7030         else
7031                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7032
7033         scan->channel_count =
7034                 iwl4965_get_channels_for_scan(
7035                         priv, phymode, 1, /* active */
7036                         direct_mask,
7037                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7038
7039         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7040             scan->channel_count * sizeof(struct iwl4965_scan_channel);
7041         cmd.data = scan;
7042         scan->len = cpu_to_le16(cmd.len);
7043
7044         set_bit(STATUS_SCAN_HW, &priv->status);
7045         rc = iwl4965_send_cmd_sync(priv, &cmd);
7046         if (rc)
7047                 goto done;
7048
7049         queue_delayed_work(priv->workqueue, &priv->scan_check,
7050                            IWL_SCAN_CHECK_WATCHDOG);
7051
7052         mutex_unlock(&priv->mutex);
7053         return;
7054
7055  done:
7056         /* inform mac80211 scan aborted */
7057         queue_work(priv->workqueue, &priv->scan_completed);
7058         mutex_unlock(&priv->mutex);
7059 }
7060
7061 static void iwl4965_bg_up(struct work_struct *data)
7062 {
7063         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7064
7065         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7066                 return;
7067
7068         mutex_lock(&priv->mutex);
7069         __iwl4965_up(priv);
7070         mutex_unlock(&priv->mutex);
7071 }
7072
7073 static void iwl4965_bg_restart(struct work_struct *data)
7074 {
7075         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7076
7077         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7078                 return;
7079
7080         iwl4965_down(priv);
7081         queue_work(priv->workqueue, &priv->up);
7082 }
7083
7084 static void iwl4965_bg_rx_replenish(struct work_struct *data)
7085 {
7086         struct iwl4965_priv *priv =
7087             container_of(data, struct iwl4965_priv, rx_replenish);
7088
7089         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7090                 return;
7091
7092         mutex_lock(&priv->mutex);
7093         iwl4965_rx_replenish(priv);
7094         mutex_unlock(&priv->mutex);
7095 }
7096
7097 static void iwl4965_bg_post_associate(struct work_struct *data)
7098 {
7099         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7100                                              post_associate.work);
7101
7102         int rc = 0;
7103         struct ieee80211_conf *conf = NULL;
7104         DECLARE_MAC_BUF(mac);
7105
7106         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7107                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7108                 return;
7109         }
7110
7111         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7112                         priv->assoc_id,
7113                         print_mac(mac, priv->active_rxon.bssid_addr));
7114
7115
7116         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7117                 return;
7118
7119         mutex_lock(&priv->mutex);
7120
7121         if (!priv->interface_id || !priv->is_open) {
7122                 mutex_unlock(&priv->mutex);
7123                 return;
7124         }
7125         iwl4965_scan_cancel_timeout(priv, 200);
7126
7127         conf = ieee80211_get_hw_conf(priv->hw);
7128
7129         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7130         iwl4965_commit_rxon(priv);
7131
7132         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7133         iwl4965_setup_rxon_timing(priv);
7134         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7135                               sizeof(priv->rxon_timing), &priv->rxon_timing);
7136         if (rc)
7137                 IWL_WARNING("REPLY_RXON_TIMING failed - "
7138                             "Attempting to continue.\n");
7139
7140         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7141
7142 #ifdef CONFIG_IWL4965_HT
7143         if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7144                 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7145         else {
7146                 priv->active_rate_ht[0] = 0;
7147                 priv->active_rate_ht[1] = 0;
7148                 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7149         }
7150 #endif /* CONFIG_IWL4965_HT*/
7151         iwl4965_set_rxon_chain(priv);
7152         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7153
7154         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7155                         priv->assoc_id, priv->beacon_int);
7156
7157         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7158                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7159         else
7160                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7161
7162         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7163                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7164                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7165                 else
7166                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7167
7168                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7169                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7170
7171         }
7172
7173         iwl4965_commit_rxon(priv);
7174
7175         switch (priv->iw_mode) {
7176         case IEEE80211_IF_TYPE_STA:
7177                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7178                 break;
7179
7180         case IEEE80211_IF_TYPE_IBSS:
7181
7182                 /* clear out the station table */
7183                 iwl4965_clear_stations_table(priv);
7184
7185                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7186                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7187                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7188                 iwl4965_send_beacon_cmd(priv);
7189
7190                 break;
7191
7192         default:
7193                 IWL_ERROR("%s Should not be called in %d mode\n",
7194                                 __FUNCTION__, priv->iw_mode);
7195                 break;
7196         }
7197
7198         iwl4965_sequence_reset(priv);
7199
7200 #ifdef CONFIG_IWL4965_SENSITIVITY
7201         /* Enable Rx differential gain and sensitivity calibrations */
7202         iwl4965_chain_noise_reset(priv);
7203         priv->start_calib = 1;
7204 #endif /* CONFIG_IWL4965_SENSITIVITY */
7205
7206         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7207                 priv->assoc_station_added = 1;
7208
7209 #ifdef CONFIG_IWL4965_QOS
7210         iwl4965_activate_qos(priv, 0);
7211 #endif /* CONFIG_IWL4965_QOS */
7212         mutex_unlock(&priv->mutex);
7213 }
7214
7215 static void iwl4965_bg_abort_scan(struct work_struct *work)
7216 {
7217         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7218
7219         if (!iwl4965_is_ready(priv))
7220                 return;
7221
7222         mutex_lock(&priv->mutex);
7223
7224         set_bit(STATUS_SCAN_ABORTING, &priv->status);
7225         iwl4965_send_scan_abort(priv);
7226
7227         mutex_unlock(&priv->mutex);
7228 }
7229
7230 static void iwl4965_bg_scan_completed(struct work_struct *work)
7231 {
7232         struct iwl4965_priv *priv =
7233             container_of(work, struct iwl4965_priv, scan_completed);
7234
7235         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7236
7237         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7238                 return;
7239
7240         ieee80211_scan_completed(priv->hw);
7241
7242         /* Since setting the TXPOWER may have been deferred while
7243          * performing the scan, fire one off */
7244         mutex_lock(&priv->mutex);
7245         iwl4965_hw_reg_send_txpower(priv);
7246         mutex_unlock(&priv->mutex);
7247 }
7248
7249 /*****************************************************************************
7250  *
7251  * mac80211 entry point functions
7252  *
7253  *****************************************************************************/
7254
7255 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7256 {
7257         struct iwl4965_priv *priv = hw->priv;
7258
7259         IWL_DEBUG_MAC80211("enter\n");
7260
7261         /* we should be verifying the device is ready to be opened */
7262         mutex_lock(&priv->mutex);
7263
7264         priv->is_open = 1;
7265
7266         if (!iwl4965_is_rfkill(priv))
7267                 ieee80211_start_queues(priv->hw);
7268
7269         mutex_unlock(&priv->mutex);
7270         IWL_DEBUG_MAC80211("leave\n");
7271         return 0;
7272 }
7273
7274 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7275 {
7276         struct iwl4965_priv *priv = hw->priv;
7277
7278         IWL_DEBUG_MAC80211("enter\n");
7279
7280
7281         mutex_lock(&priv->mutex);
7282         /* stop mac, cancel any scan request and clear
7283          * RXON_FILTER_ASSOC_MSK BIT
7284          */
7285         priv->is_open = 0;
7286         iwl4965_scan_cancel_timeout(priv, 100);
7287         cancel_delayed_work(&priv->post_associate);
7288         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7289         iwl4965_commit_rxon(priv);
7290         mutex_unlock(&priv->mutex);
7291
7292         IWL_DEBUG_MAC80211("leave\n");
7293 }
7294
7295 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7296                       struct ieee80211_tx_control *ctl)
7297 {
7298         struct iwl4965_priv *priv = hw->priv;
7299
7300         IWL_DEBUG_MAC80211("enter\n");
7301
7302         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7303                 IWL_DEBUG_MAC80211("leave - monitor\n");
7304                 return -1;
7305         }
7306
7307         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7308                      ctl->tx_rate);
7309
7310         if (iwl4965_tx_skb(priv, skb, ctl))
7311                 dev_kfree_skb_any(skb);
7312
7313         IWL_DEBUG_MAC80211("leave\n");
7314         return 0;
7315 }
7316
7317 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7318                                  struct ieee80211_if_init_conf *conf)
7319 {
7320         struct iwl4965_priv *priv = hw->priv;
7321         unsigned long flags;
7322         DECLARE_MAC_BUF(mac);
7323
7324         IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7325
7326         if (priv->interface_id) {
7327                 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7328                 return 0;
7329         }
7330
7331         spin_lock_irqsave(&priv->lock, flags);
7332         priv->interface_id = conf->if_id;
7333
7334         spin_unlock_irqrestore(&priv->lock, flags);
7335
7336         mutex_lock(&priv->mutex);
7337
7338         if (conf->mac_addr) {
7339                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7340                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7341         }
7342         iwl4965_set_mode(priv, conf->type);
7343
7344         IWL_DEBUG_MAC80211("leave\n");
7345         mutex_unlock(&priv->mutex);
7346
7347         return 0;
7348 }
7349
7350 /**
7351  * iwl4965_mac_config - mac80211 config callback
7352  *
7353  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7354  * be set inappropriately and the driver currently sets the hardware up to
7355  * use it whenever needed.
7356  */
7357 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7358 {
7359         struct iwl4965_priv *priv = hw->priv;
7360         const struct iwl4965_channel_info *ch_info;
7361         unsigned long flags;
7362
7363         mutex_lock(&priv->mutex);
7364         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7365
7366         if (!iwl4965_is_ready(priv)) {
7367                 IWL_DEBUG_MAC80211("leave - not ready\n");
7368                 mutex_unlock(&priv->mutex);
7369                 return -EIO;
7370         }
7371
7372         /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7373          * what is exposed through include/ declarations */
7374         if (unlikely(!iwl4965_param_disable_hw_scan &&
7375                      test_bit(STATUS_SCANNING, &priv->status))) {
7376                 IWL_DEBUG_MAC80211("leave - scanning\n");
7377                 mutex_unlock(&priv->mutex);
7378                 return 0;
7379         }
7380
7381         spin_lock_irqsave(&priv->lock, flags);
7382
7383         ch_info = iwl4965_get_channel_info(priv, conf->phymode, conf->channel);
7384         if (!is_channel_valid(ch_info)) {
7385                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7386                                conf->channel, conf->phymode);
7387                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7388                 spin_unlock_irqrestore(&priv->lock, flags);
7389                 mutex_unlock(&priv->mutex);
7390                 return -EINVAL;
7391         }
7392
7393 #ifdef CONFIG_IWL4965_HT
7394         /* if we are switching fron ht to 2.4 clear flags
7395          * from any ht related info since 2.4 does not
7396          * support ht */
7397         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7398 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7399             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7400 #endif
7401         )
7402                 priv->staging_rxon.flags = 0;
7403 #endif /* CONFIG_IWL4965_HT */
7404
7405         iwl4965_set_rxon_channel(priv, conf->phymode, conf->channel);
7406
7407         iwl4965_set_flags_for_phymode(priv, conf->phymode);
7408
7409         /* The list of supported rates and rate mask can be different
7410          * for each phymode; since the phymode may have changed, reset
7411          * the rate mask to what mac80211 lists */
7412         iwl4965_set_rate(priv);
7413
7414         spin_unlock_irqrestore(&priv->lock, flags);
7415
7416 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7417         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7418                 iwl4965_hw_channel_switch(priv, conf->channel);
7419                 mutex_unlock(&priv->mutex);
7420                 return 0;
7421         }
7422 #endif
7423
7424         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7425
7426         if (!conf->radio_enabled) {
7427                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7428                 mutex_unlock(&priv->mutex);
7429                 return 0;
7430         }
7431
7432         if (iwl4965_is_rfkill(priv)) {
7433                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7434                 mutex_unlock(&priv->mutex);
7435                 return -EIO;
7436         }
7437
7438         iwl4965_set_rate(priv);
7439
7440         if (memcmp(&priv->active_rxon,
7441                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7442                 iwl4965_commit_rxon(priv);
7443         else
7444                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7445
7446         IWL_DEBUG_MAC80211("leave\n");
7447
7448         mutex_unlock(&priv->mutex);
7449
7450         return 0;
7451 }
7452
7453 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7454 {
7455         int rc = 0;
7456
7457         if (priv->status & STATUS_EXIT_PENDING)
7458                 return;
7459
7460         /* The following should be done only at AP bring up */
7461         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7462
7463                 /* RXON - unassoc (to set timing command) */
7464                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7465                 iwl4965_commit_rxon(priv);
7466
7467                 /* RXON Timing */
7468                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7469                 iwl4965_setup_rxon_timing(priv);
7470                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7471                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7472                 if (rc)
7473                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7474                                         "Attempting to continue.\n");
7475
7476                 iwl4965_set_rxon_chain(priv);
7477
7478                 /* FIXME: what should be the assoc_id for AP? */
7479                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7480                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7481                         priv->staging_rxon.flags |=
7482                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7483                 else
7484                         priv->staging_rxon.flags &=
7485                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7486
7487                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7488                         if (priv->assoc_capability &
7489                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7490                                 priv->staging_rxon.flags |=
7491                                         RXON_FLG_SHORT_SLOT_MSK;
7492                         else
7493                                 priv->staging_rxon.flags &=
7494                                         ~RXON_FLG_SHORT_SLOT_MSK;
7495
7496                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7497                                 priv->staging_rxon.flags &=
7498                                         ~RXON_FLG_SHORT_SLOT_MSK;
7499                 }
7500                 /* restore RXON assoc */
7501                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7502                 iwl4965_commit_rxon(priv);
7503 #ifdef CONFIG_IWL4965_QOS
7504                 iwl4965_activate_qos(priv, 1);
7505 #endif
7506                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7507         }
7508         iwl4965_send_beacon_cmd(priv);
7509
7510         /* FIXME - we need to add code here to detect a totally new
7511          * configuration, reset the AP, unassoc, rxon timing, assoc,
7512          * clear sta table, add BCAST sta... */
7513 }
7514
7515 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7516                                     struct ieee80211_if_conf *conf)
7517 {
7518         struct iwl4965_priv *priv = hw->priv;
7519         DECLARE_MAC_BUF(mac);
7520         unsigned long flags;
7521         int rc;
7522
7523         if (conf == NULL)
7524                 return -EIO;
7525
7526         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7527             (!conf->beacon || !conf->ssid_len)) {
7528                 IWL_DEBUG_MAC80211
7529                     ("Leaving in AP mode because HostAPD is not ready.\n");
7530                 return 0;
7531         }
7532
7533         mutex_lock(&priv->mutex);
7534
7535         IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7536         if (conf->bssid)
7537                 IWL_DEBUG_MAC80211("bssid: %s\n",
7538                                    print_mac(mac, conf->bssid));
7539
7540 /*
7541  * very dubious code was here; the probe filtering flag is never set:
7542  *
7543         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7544             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7545  */
7546         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7547                 IWL_DEBUG_MAC80211("leave - scanning\n");
7548                 mutex_unlock(&priv->mutex);
7549                 return 0;
7550         }
7551
7552         if (priv->interface_id != if_id) {
7553                 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7554                 mutex_unlock(&priv->mutex);
7555                 return 0;
7556         }
7557
7558         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7559                 if (!conf->bssid) {
7560                         conf->bssid = priv->mac_addr;
7561                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7562                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7563                                            print_mac(mac, conf->bssid));
7564                 }
7565                 if (priv->ibss_beacon)
7566                         dev_kfree_skb(priv->ibss_beacon);
7567
7568                 priv->ibss_beacon = conf->beacon;
7569         }
7570
7571         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7572             !is_multicast_ether_addr(conf->bssid)) {
7573                 /* If there is currently a HW scan going on in the background
7574                  * then we need to cancel it else the RXON below will fail. */
7575                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7576                         IWL_WARNING("Aborted scan still in progress "
7577                                     "after 100ms\n");
7578                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7579                         mutex_unlock(&priv->mutex);
7580                         return -EAGAIN;
7581                 }
7582                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7583
7584                 /* TODO: Audit driver for usage of these members and see
7585                  * if mac80211 deprecates them (priv->bssid looks like it
7586                  * shouldn't be there, but I haven't scanned the IBSS code
7587                  * to verify) - jpk */
7588                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7589
7590                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7591                         iwl4965_config_ap(priv);
7592                 else {
7593                         rc = iwl4965_commit_rxon(priv);
7594                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7595                                 iwl4965_rxon_add_station(
7596                                         priv, priv->active_rxon.bssid_addr, 1);
7597                 }
7598
7599         } else {
7600                 iwl4965_scan_cancel_timeout(priv, 100);
7601                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7602                 iwl4965_commit_rxon(priv);
7603         }
7604
7605         spin_lock_irqsave(&priv->lock, flags);
7606         if (!conf->ssid_len)
7607                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7608         else
7609                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7610
7611         priv->essid_len = conf->ssid_len;
7612         spin_unlock_irqrestore(&priv->lock, flags);
7613
7614         IWL_DEBUG_MAC80211("leave\n");
7615         mutex_unlock(&priv->mutex);
7616
7617         return 0;
7618 }
7619
7620 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7621                                  unsigned int changed_flags,
7622                                  unsigned int *total_flags,
7623                                  int mc_count, struct dev_addr_list *mc_list)
7624 {
7625         /*
7626          * XXX: dummy
7627          * see also iwl4965_connection_init_rx_config
7628          */
7629         *total_flags = 0;
7630 }
7631
7632 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7633                                      struct ieee80211_if_init_conf *conf)
7634 {
7635         struct iwl4965_priv *priv = hw->priv;
7636
7637         IWL_DEBUG_MAC80211("enter\n");
7638
7639         mutex_lock(&priv->mutex);
7640
7641         iwl4965_scan_cancel_timeout(priv, 100);
7642         cancel_delayed_work(&priv->post_associate);
7643         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7644         iwl4965_commit_rxon(priv);
7645
7646         if (priv->interface_id == conf->if_id) {
7647                 priv->interface_id = 0;
7648                 memset(priv->bssid, 0, ETH_ALEN);
7649                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7650                 priv->essid_len = 0;
7651         }
7652         mutex_unlock(&priv->mutex);
7653
7654         IWL_DEBUG_MAC80211("leave\n");
7655
7656 }
7657 static void iwl4965_mac_erp_ie_changed(struct ieee80211_hw *hw,
7658                 u8 changes, int cts_protection, int preamble)
7659 {
7660         struct iwl4965_priv *priv = hw->priv;
7661
7662         if (changes & IEEE80211_ERP_CHANGE_PREAMBLE) {
7663                 if (preamble == WLAN_ERP_PREAMBLE_SHORT)
7664                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7665                 else
7666                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7667         }
7668
7669         if (changes & IEEE80211_ERP_CHANGE_PROTECTION) {
7670                 if (cts_protection && (priv->phymode != MODE_IEEE80211A))
7671                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7672                 else
7673                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7674         }
7675
7676         if (iwl4965_is_associated(priv))
7677                 iwl4965_send_rxon_assoc(priv);
7678 }
7679
7680 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7681 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7682 {
7683         int rc = 0;
7684         unsigned long flags;
7685         struct iwl4965_priv *priv = hw->priv;
7686
7687         IWL_DEBUG_MAC80211("enter\n");
7688
7689         mutex_lock(&priv->mutex);
7690         spin_lock_irqsave(&priv->lock, flags);
7691
7692         if (!iwl4965_is_ready_rf(priv)) {
7693                 rc = -EIO;
7694                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7695                 goto out_unlock;
7696         }
7697
7698         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7699                 rc = -EIO;
7700                 IWL_ERROR("ERROR: APs don't scan\n");
7701                 goto out_unlock;
7702         }
7703
7704         /* if we just finished scan ask for delay */
7705         if (priv->last_scan_jiffies &&
7706             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7707                        jiffies)) {
7708                 rc = -EAGAIN;
7709                 goto out_unlock;
7710         }
7711         if (len) {
7712                 IWL_DEBUG_SCAN("direct scan for  "
7713                                "%s [%d]\n ",
7714                                iwl4965_escape_essid(ssid, len), (int)len);
7715
7716                 priv->one_direct_scan = 1;
7717                 priv->direct_ssid_len = (u8)
7718                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7719                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7720         } else
7721                 priv->one_direct_scan = 0;
7722
7723         rc = iwl4965_scan_initiate(priv);
7724
7725         IWL_DEBUG_MAC80211("leave\n");
7726
7727 out_unlock:
7728         spin_unlock_irqrestore(&priv->lock, flags);
7729         mutex_unlock(&priv->mutex);
7730
7731         return rc;
7732 }
7733
7734 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7735                            const u8 *local_addr, const u8 *addr,
7736                            struct ieee80211_key_conf *key)
7737 {
7738         struct iwl4965_priv *priv = hw->priv;
7739         DECLARE_MAC_BUF(mac);
7740         int rc = 0;
7741         u8 sta_id;
7742
7743         IWL_DEBUG_MAC80211("enter\n");
7744
7745         if (!iwl4965_param_hwcrypto) {
7746                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7747                 return -EOPNOTSUPP;
7748         }
7749
7750         if (is_zero_ether_addr(addr))
7751                 /* only support pairwise keys */
7752                 return -EOPNOTSUPP;
7753
7754         sta_id = iwl4965_hw_find_station(priv, addr);
7755         if (sta_id == IWL_INVALID_STATION) {
7756                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7757                                    print_mac(mac, addr));
7758                 return -EINVAL;
7759         }
7760
7761         mutex_lock(&priv->mutex);
7762
7763         iwl4965_scan_cancel_timeout(priv, 100);
7764
7765         switch (cmd) {
7766         case  SET_KEY:
7767                 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7768                 if (!rc) {
7769                         iwl4965_set_rxon_hwcrypto(priv, 1);
7770                         iwl4965_commit_rxon(priv);
7771                         key->hw_key_idx = sta_id;
7772                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7773                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7774                 }
7775                 break;
7776         case DISABLE_KEY:
7777                 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7778                 if (!rc) {
7779                         iwl4965_set_rxon_hwcrypto(priv, 0);
7780                         iwl4965_commit_rxon(priv);
7781                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7782                 }
7783                 break;
7784         default:
7785                 rc = -EINVAL;
7786         }
7787
7788         IWL_DEBUG_MAC80211("leave\n");
7789         mutex_unlock(&priv->mutex);
7790
7791         return rc;
7792 }
7793
7794 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7795                            const struct ieee80211_tx_queue_params *params)
7796 {
7797         struct iwl4965_priv *priv = hw->priv;
7798 #ifdef CONFIG_IWL4965_QOS
7799         unsigned long flags;
7800         int q;
7801 #endif /* CONFIG_IWL4965_QOS */
7802
7803         IWL_DEBUG_MAC80211("enter\n");
7804
7805         if (!iwl4965_is_ready_rf(priv)) {
7806                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7807                 return -EIO;
7808         }
7809
7810         if (queue >= AC_NUM) {
7811                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7812                 return 0;
7813         }
7814
7815 #ifdef CONFIG_IWL4965_QOS
7816         if (!priv->qos_data.qos_enable) {
7817                 priv->qos_data.qos_active = 0;
7818                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7819                 return 0;
7820         }
7821         q = AC_NUM - 1 - queue;
7822
7823         spin_lock_irqsave(&priv->lock, flags);
7824
7825         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7826         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7827         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7828         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7829                         cpu_to_le16((params->burst_time * 100));
7830
7831         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7832         priv->qos_data.qos_active = 1;
7833
7834         spin_unlock_irqrestore(&priv->lock, flags);
7835
7836         mutex_lock(&priv->mutex);
7837         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7838                 iwl4965_activate_qos(priv, 1);
7839         else if (priv->assoc_id && iwl4965_is_associated(priv))
7840                 iwl4965_activate_qos(priv, 0);
7841
7842         mutex_unlock(&priv->mutex);
7843
7844 #endif /*CONFIG_IWL4965_QOS */
7845
7846         IWL_DEBUG_MAC80211("leave\n");
7847         return 0;
7848 }
7849
7850 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7851                                 struct ieee80211_tx_queue_stats *stats)
7852 {
7853         struct iwl4965_priv *priv = hw->priv;
7854         int i, avail;
7855         struct iwl4965_tx_queue *txq;
7856         struct iwl4965_queue *q;
7857         unsigned long flags;
7858
7859         IWL_DEBUG_MAC80211("enter\n");
7860
7861         if (!iwl4965_is_ready_rf(priv)) {
7862                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7863                 return -EIO;
7864         }
7865
7866         spin_lock_irqsave(&priv->lock, flags);
7867
7868         for (i = 0; i < AC_NUM; i++) {
7869                 txq = &priv->txq[i];
7870                 q = &txq->q;
7871                 avail = iwl4965_queue_space(q);
7872
7873                 stats->data[i].len = q->n_window - avail;
7874                 stats->data[i].limit = q->n_window - q->high_mark;
7875                 stats->data[i].count = q->n_window;
7876
7877         }
7878         spin_unlock_irqrestore(&priv->lock, flags);
7879
7880         IWL_DEBUG_MAC80211("leave\n");
7881
7882         return 0;
7883 }
7884
7885 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7886                              struct ieee80211_low_level_stats *stats)
7887 {
7888         IWL_DEBUG_MAC80211("enter\n");
7889         IWL_DEBUG_MAC80211("leave\n");
7890
7891         return 0;
7892 }
7893
7894 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7895 {
7896         IWL_DEBUG_MAC80211("enter\n");
7897         IWL_DEBUG_MAC80211("leave\n");
7898
7899         return 0;
7900 }
7901
7902 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7903 {
7904         struct iwl4965_priv *priv = hw->priv;
7905         unsigned long flags;
7906
7907         mutex_lock(&priv->mutex);
7908         IWL_DEBUG_MAC80211("enter\n");
7909
7910         priv->lq_mngr.lq_ready = 0;
7911 #ifdef CONFIG_IWL4965_HT
7912         spin_lock_irqsave(&priv->lock, flags);
7913         memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
7914         spin_unlock_irqrestore(&priv->lock, flags);
7915 #ifdef CONFIG_IWL4965_HT_AGG
7916 /*      if (priv->lq_mngr.agg_ctrl.granted_ba)
7917                 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7918
7919         memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl4965_agg_control));
7920         priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
7921         priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
7922         priv->lq_mngr.agg_ctrl.auto_agg = 1;
7923
7924         if (priv->lq_mngr.agg_ctrl.auto_agg)
7925                 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
7926 #endif /*CONFIG_IWL4965_HT_AGG */
7927 #endif /* CONFIG_IWL4965_HT */
7928
7929 #ifdef CONFIG_IWL4965_QOS
7930         iwl4965_reset_qos(priv);
7931 #endif
7932
7933         cancel_delayed_work(&priv->post_associate);
7934
7935         spin_lock_irqsave(&priv->lock, flags);
7936         priv->assoc_id = 0;
7937         priv->assoc_capability = 0;
7938         priv->call_post_assoc_from_beacon = 0;
7939         priv->assoc_station_added = 0;
7940
7941         /* new association get rid of ibss beacon skb */
7942         if (priv->ibss_beacon)
7943                 dev_kfree_skb(priv->ibss_beacon);
7944
7945         priv->ibss_beacon = NULL;
7946
7947         priv->beacon_int = priv->hw->conf.beacon_int;
7948         priv->timestamp1 = 0;
7949         priv->timestamp0 = 0;
7950         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7951                 priv->beacon_int = 0;
7952
7953         spin_unlock_irqrestore(&priv->lock, flags);
7954
7955         /* we are restarting association process
7956          * clear RXON_FILTER_ASSOC_MSK bit
7957          */
7958         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7959                 iwl4965_scan_cancel_timeout(priv, 100);
7960                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7961                 iwl4965_commit_rxon(priv);
7962         }
7963
7964         /* Per mac80211.h: This is only used in IBSS mode... */
7965         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7966
7967                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7968                 mutex_unlock(&priv->mutex);
7969                 return;
7970         }
7971
7972         if (!iwl4965_is_ready_rf(priv)) {
7973                 IWL_DEBUG_MAC80211("leave - not ready\n");
7974                 mutex_unlock(&priv->mutex);
7975                 return;
7976         }
7977
7978         priv->only_active_channel = 0;
7979
7980         iwl4965_set_rate(priv);
7981
7982         mutex_unlock(&priv->mutex);
7983
7984         IWL_DEBUG_MAC80211("leave\n");
7985
7986 }
7987
7988 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7989                                  struct ieee80211_tx_control *control)
7990 {
7991         struct iwl4965_priv *priv = hw->priv;
7992         unsigned long flags;
7993
7994         mutex_lock(&priv->mutex);
7995         IWL_DEBUG_MAC80211("enter\n");
7996
7997         if (!iwl4965_is_ready_rf(priv)) {
7998                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7999                 mutex_unlock(&priv->mutex);
8000                 return -EIO;
8001         }
8002
8003         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8004                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
8005                 mutex_unlock(&priv->mutex);
8006                 return -EIO;
8007         }
8008
8009         spin_lock_irqsave(&priv->lock, flags);
8010
8011         if (priv->ibss_beacon)
8012                 dev_kfree_skb(priv->ibss_beacon);
8013
8014         priv->ibss_beacon = skb;
8015
8016         priv->assoc_id = 0;
8017
8018         IWL_DEBUG_MAC80211("leave\n");
8019         spin_unlock_irqrestore(&priv->lock, flags);
8020
8021 #ifdef CONFIG_IWL4965_QOS
8022         iwl4965_reset_qos(priv);
8023 #endif
8024
8025         queue_work(priv->workqueue, &priv->post_associate.work);
8026
8027         mutex_unlock(&priv->mutex);
8028
8029         return 0;
8030 }
8031
8032 #ifdef CONFIG_IWL4965_HT
8033 union ht_cap_info {
8034         struct {
8035                 u16 advanced_coding_cap         :1;
8036                 u16 supported_chan_width_set    :1;
8037                 u16 mimo_power_save_mode        :2;
8038                 u16 green_field                 :1;
8039                 u16 short_GI20                  :1;
8040                 u16 short_GI40                  :1;
8041                 u16 tx_stbc                     :1;
8042                 u16 rx_stbc                     :1;
8043                 u16 beam_forming                :1;
8044                 u16 delayed_ba                  :1;
8045                 u16 maximal_amsdu_size          :1;
8046                 u16 cck_mode_at_40MHz           :1;
8047                 u16 psmp_support                :1;
8048                 u16 stbc_ctrl_frame_support     :1;
8049                 u16 sig_txop_protection_support :1;
8050         };
8051         u16 val;
8052 } __attribute__ ((packed));
8053
8054 union ht_param_info{
8055         struct {
8056                 u8 max_rx_ampdu_factor  :2;
8057                 u8 mpdu_density         :3;
8058                 u8 reserved             :3;
8059         };
8060         u8 val;
8061 } __attribute__ ((packed));
8062
8063 union ht_exra_param_info {
8064         struct {
8065                 u8 ext_chan_offset              :2;
8066                 u8 tx_chan_width                :1;
8067                 u8 rifs_mode                    :1;
8068                 u8 controlled_access_only       :1;
8069                 u8 service_interval_granularity :3;
8070         };
8071         u8 val;
8072 } __attribute__ ((packed));
8073
8074 union ht_operation_mode{
8075         struct {
8076                 u16 op_mode     :2;
8077                 u16 non_GF      :1;
8078                 u16 reserved    :13;
8079         };
8080         u16 val;
8081 } __attribute__ ((packed));
8082
8083
8084 static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8085                             struct ieee80211_ht_additional_info *ht_extra,
8086                             struct sta_ht_info *ht_info_ap,
8087                             struct sta_ht_info *ht_info)
8088 {
8089         union ht_cap_info cap;
8090         union ht_operation_mode op_mode;
8091         union ht_param_info param_info;
8092         union ht_exra_param_info extra_param_info;
8093
8094         IWL_DEBUG_MAC80211("enter: \n");
8095
8096         if (!ht_info) {
8097                 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8098                 return -1;
8099         }
8100
8101         if (ht_cap) {
8102                 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8103                 param_info.val = ht_cap->mac_ht_params_info;
8104                 ht_info->is_ht = 1;
8105                 if (cap.short_GI20)
8106                         ht_info->sgf |= 0x1;
8107                 if (cap.short_GI40)
8108                         ht_info->sgf |= 0x2;
8109                 ht_info->is_green_field = cap.green_field;
8110                 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8111                 ht_info->supported_chan_width = cap.supported_chan_width_set;
8112                 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8113                 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8114
8115                 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8116                 ht_info->mpdu_density = param_info.mpdu_density;
8117
8118                 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8119                                     ht_cap->supported_mcs_set[0],
8120                                     ht_cap->supported_mcs_set[1]);
8121
8122                 if (ht_info_ap) {
8123                         ht_info->control_channel = ht_info_ap->control_channel;
8124                         ht_info->extension_chan_offset =
8125                                 ht_info_ap->extension_chan_offset;
8126                         ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8127                         ht_info->operating_mode = ht_info_ap->operating_mode;
8128                 }
8129
8130                 if (ht_extra) {
8131                         extra_param_info.val = ht_extra->ht_param;
8132                         ht_info->control_channel = ht_extra->control_chan;
8133                         ht_info->extension_chan_offset =
8134                             extra_param_info.ext_chan_offset;
8135                         ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8136                         op_mode.val = (u16)
8137                             le16_to_cpu(ht_extra->operation_mode);
8138                         ht_info->operating_mode = op_mode.op_mode;
8139                         IWL_DEBUG_MAC80211("control channel %d\n",
8140                                             ht_extra->control_chan);
8141                 }
8142         } else
8143                 ht_info->is_ht = 0;
8144
8145         IWL_DEBUG_MAC80211("leave\n");
8146         return 0;
8147 }
8148
8149 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8150                            struct ieee80211_ht_capability *ht_cap,
8151                            struct ieee80211_ht_additional_info *ht_extra)
8152 {
8153         struct iwl4965_priv *priv = hw->priv;
8154         int rs;
8155
8156         IWL_DEBUG_MAC80211("enter: \n");
8157
8158         rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8159         iwl4965_set_rxon_chain(priv);
8160
8161         if (priv && priv->assoc_id &&
8162             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8163                 unsigned long flags;
8164
8165                 spin_lock_irqsave(&priv->lock, flags);
8166                 if (priv->beacon_int)
8167                         queue_work(priv->workqueue, &priv->post_associate.work);
8168                 else
8169                         priv->call_post_assoc_from_beacon = 1;
8170                 spin_unlock_irqrestore(&priv->lock, flags);
8171         }
8172
8173         IWL_DEBUG_MAC80211("leave: control channel %d\n",
8174                         ht_extra->control_chan);
8175         return rs;
8176
8177 }
8178
8179 static void iwl4965_set_ht_capab(struct ieee80211_hw *hw,
8180                              struct ieee80211_ht_capability *ht_cap,
8181                              u8 use_wide_chan)
8182 {
8183         union ht_cap_info cap;
8184         union ht_param_info param_info;
8185
8186         memset(&cap, 0, sizeof(union ht_cap_info));
8187         memset(&param_info, 0, sizeof(union ht_param_info));
8188
8189         cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8190         cap.green_field = 1;
8191         cap.short_GI20 = 1;
8192         cap.short_GI40 = 1;
8193         cap.supported_chan_width_set = use_wide_chan;
8194         cap.mimo_power_save_mode = 0x3;
8195
8196         param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8197         param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8198         ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8199         ht_cap->mac_ht_params_info = (u8) param_info.val;
8200
8201         ht_cap->supported_mcs_set[0] = 0xff;
8202         ht_cap->supported_mcs_set[1] = 0xff;
8203         ht_cap->supported_mcs_set[4] =
8204             (cap.supported_chan_width_set) ? 0x1: 0x0;
8205 }
8206
8207 static void iwl4965_mac_get_ht_capab(struct ieee80211_hw *hw,
8208                                  struct ieee80211_ht_capability *ht_cap)
8209 {
8210         u8 use_wide_channel = 1;
8211         struct iwl4965_priv *priv = hw->priv;
8212
8213         IWL_DEBUG_MAC80211("enter: \n");
8214         if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8215                 use_wide_channel = 0;
8216
8217         /* no fat tx allowed on 2.4GHZ */
8218         if (priv->phymode != MODE_IEEE80211A)
8219                 use_wide_channel = 0;
8220
8221         iwl4965_set_ht_capab(hw, ht_cap, use_wide_channel);
8222         IWL_DEBUG_MAC80211("leave: \n");
8223 }
8224 #endif /*CONFIG_IWL4965_HT*/
8225
8226 /*****************************************************************************
8227  *
8228  * sysfs attributes
8229  *
8230  *****************************************************************************/
8231
8232 #ifdef CONFIG_IWL4965_DEBUG
8233
8234 /*
8235  * The following adds a new attribute to the sysfs representation
8236  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8237  * used for controlling the debug level.
8238  *
8239  * See the level definitions in iwl for details.
8240  */
8241
8242 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8243 {
8244         return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8245 }
8246 static ssize_t store_debug_level(struct device_driver *d,
8247                                  const char *buf, size_t count)
8248 {
8249         char *p = (char *)buf;
8250         u32 val;
8251
8252         val = simple_strtoul(p, &p, 0);
8253         if (p == buf)
8254                 printk(KERN_INFO DRV_NAME
8255                        ": %s is not in hex or decimal form.\n", buf);
8256         else
8257                 iwl4965_debug_level = val;
8258
8259         return strnlen(buf, count);
8260 }
8261
8262 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8263                    show_debug_level, store_debug_level);
8264
8265 #endif /* CONFIG_IWL4965_DEBUG */
8266
8267 static ssize_t show_rf_kill(struct device *d,
8268                             struct device_attribute *attr, char *buf)
8269 {
8270         /*
8271          * 0 - RF kill not enabled
8272          * 1 - SW based RF kill active (sysfs)
8273          * 2 - HW based RF kill active
8274          * 3 - Both HW and SW based RF kill active
8275          */
8276         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8277         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8278                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8279
8280         return sprintf(buf, "%i\n", val);
8281 }
8282
8283 static ssize_t store_rf_kill(struct device *d,
8284                              struct device_attribute *attr,
8285                              const char *buf, size_t count)
8286 {
8287         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8288
8289         mutex_lock(&priv->mutex);
8290         iwl4965_radio_kill_sw(priv, buf[0] == '1');
8291         mutex_unlock(&priv->mutex);
8292
8293         return count;
8294 }
8295
8296 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8297
8298 static ssize_t show_temperature(struct device *d,
8299                                 struct device_attribute *attr, char *buf)
8300 {
8301         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8302
8303         if (!iwl4965_is_alive(priv))
8304                 return -EAGAIN;
8305
8306         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8307 }
8308
8309 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8310
8311 static ssize_t show_rs_window(struct device *d,
8312                               struct device_attribute *attr,
8313                               char *buf)
8314 {
8315         struct iwl4965_priv *priv = d->driver_data;
8316         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8317 }
8318 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8319
8320 static ssize_t show_tx_power(struct device *d,
8321                              struct device_attribute *attr, char *buf)
8322 {
8323         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8324         return sprintf(buf, "%d\n", priv->user_txpower_limit);
8325 }
8326
8327 static ssize_t store_tx_power(struct device *d,
8328                               struct device_attribute *attr,
8329                               const char *buf, size_t count)
8330 {
8331         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8332         char *p = (char *)buf;
8333         u32 val;
8334
8335         val = simple_strtoul(p, &p, 10);
8336         if (p == buf)
8337                 printk(KERN_INFO DRV_NAME
8338                        ": %s is not in decimal form.\n", buf);
8339         else
8340                 iwl4965_hw_reg_set_txpower(priv, val);
8341
8342         return count;
8343 }
8344
8345 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8346
8347 static ssize_t show_flags(struct device *d,
8348                           struct device_attribute *attr, char *buf)
8349 {
8350         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8351
8352         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8353 }
8354
8355 static ssize_t store_flags(struct device *d,
8356                            struct device_attribute *attr,
8357                            const char *buf, size_t count)
8358 {
8359         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8360         u32 flags = simple_strtoul(buf, NULL, 0);
8361
8362         mutex_lock(&priv->mutex);
8363         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8364                 /* Cancel any currently running scans... */
8365                 if (iwl4965_scan_cancel_timeout(priv, 100))
8366                         IWL_WARNING("Could not cancel scan.\n");
8367                 else {
8368                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8369                                        flags);
8370                         priv->staging_rxon.flags = cpu_to_le32(flags);
8371                         iwl4965_commit_rxon(priv);
8372                 }
8373         }
8374         mutex_unlock(&priv->mutex);
8375
8376         return count;
8377 }
8378
8379 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8380
8381 static ssize_t show_filter_flags(struct device *d,
8382                                  struct device_attribute *attr, char *buf)
8383 {
8384         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8385
8386         return sprintf(buf, "0x%04X\n",
8387                 le32_to_cpu(priv->active_rxon.filter_flags));
8388 }
8389
8390 static ssize_t store_filter_flags(struct device *d,
8391                                   struct device_attribute *attr,
8392                                   const char *buf, size_t count)
8393 {
8394         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8395         u32 filter_flags = simple_strtoul(buf, NULL, 0);
8396
8397         mutex_lock(&priv->mutex);
8398         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8399                 /* Cancel any currently running scans... */
8400                 if (iwl4965_scan_cancel_timeout(priv, 100))
8401                         IWL_WARNING("Could not cancel scan.\n");
8402                 else {
8403                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8404                                        "0x%04X\n", filter_flags);
8405                         priv->staging_rxon.filter_flags =
8406                                 cpu_to_le32(filter_flags);
8407                         iwl4965_commit_rxon(priv);
8408                 }
8409         }
8410         mutex_unlock(&priv->mutex);
8411
8412         return count;
8413 }
8414
8415 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8416                    store_filter_flags);
8417
8418 static ssize_t show_tune(struct device *d,
8419                          struct device_attribute *attr, char *buf)
8420 {
8421         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8422
8423         return sprintf(buf, "0x%04X\n",
8424                        (priv->phymode << 8) |
8425                         le16_to_cpu(priv->active_rxon.channel));
8426 }
8427
8428 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode);
8429
8430 static ssize_t store_tune(struct device *d,
8431                           struct device_attribute *attr,
8432                           const char *buf, size_t count)
8433 {
8434         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8435         char *p = (char *)buf;
8436         u16 tune = simple_strtoul(p, &p, 0);
8437         u8 phymode = (tune >> 8) & 0xff;
8438         u16 channel = tune & 0xff;
8439
8440         IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8441
8442         mutex_lock(&priv->mutex);
8443         if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8444             (priv->phymode != phymode)) {
8445                 const struct iwl4965_channel_info *ch_info;
8446
8447                 ch_info = iwl4965_get_channel_info(priv, phymode, channel);
8448                 if (!ch_info) {
8449                         IWL_WARNING("Requested invalid phymode/channel "
8450                                     "combination: %d %d\n", phymode, channel);
8451                         mutex_unlock(&priv->mutex);
8452                         return -EINVAL;
8453                 }
8454
8455                 /* Cancel any currently running scans... */
8456                 if (iwl4965_scan_cancel_timeout(priv, 100))
8457                         IWL_WARNING("Could not cancel scan.\n");
8458                 else {
8459                         IWL_DEBUG_INFO("Committing phymode and "
8460                                        "rxon.channel = %d %d\n",
8461                                        phymode, channel);
8462
8463                         iwl4965_set_rxon_channel(priv, phymode, channel);
8464                         iwl4965_set_flags_for_phymode(priv, phymode);
8465
8466                         iwl4965_set_rate(priv);
8467                         iwl4965_commit_rxon(priv);
8468                 }
8469         }
8470         mutex_unlock(&priv->mutex);
8471
8472         return count;
8473 }
8474
8475 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8476
8477 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8478
8479 static ssize_t show_measurement(struct device *d,
8480                                 struct device_attribute *attr, char *buf)
8481 {
8482         struct iwl4965_priv *priv = dev_get_drvdata(d);
8483         struct iwl4965_spectrum_notification measure_report;
8484         u32 size = sizeof(measure_report), len = 0, ofs = 0;
8485         u8 *data = (u8 *) & measure_report;
8486         unsigned long flags;
8487
8488         spin_lock_irqsave(&priv->lock, flags);
8489         if (!(priv->measurement_status & MEASUREMENT_READY)) {
8490                 spin_unlock_irqrestore(&priv->lock, flags);
8491                 return 0;
8492         }
8493         memcpy(&measure_report, &priv->measure_report, size);
8494         priv->measurement_status = 0;
8495         spin_unlock_irqrestore(&priv->lock, flags);
8496
8497         while (size && (PAGE_SIZE - len)) {
8498                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8499                                    PAGE_SIZE - len, 1);
8500                 len = strlen(buf);
8501                 if (PAGE_SIZE - len)
8502                         buf[len++] = '\n';
8503
8504                 ofs += 16;
8505                 size -= min(size, 16U);
8506         }
8507
8508         return len;
8509 }
8510
8511 static ssize_t store_measurement(struct device *d,
8512                                  struct device_attribute *attr,
8513                                  const char *buf, size_t count)
8514 {
8515         struct iwl4965_priv *priv = dev_get_drvdata(d);
8516         struct ieee80211_measurement_params params = {
8517                 .channel = le16_to_cpu(priv->active_rxon.channel),
8518                 .start_time = cpu_to_le64(priv->last_tsf),
8519                 .duration = cpu_to_le16(1),
8520         };
8521         u8 type = IWL_MEASURE_BASIC;
8522         u8 buffer[32];
8523         u8 channel;
8524
8525         if (count) {
8526                 char *p = buffer;
8527                 strncpy(buffer, buf, min(sizeof(buffer), count));
8528                 channel = simple_strtoul(p, NULL, 0);
8529                 if (channel)
8530                         params.channel = channel;
8531
8532                 p = buffer;
8533                 while (*p && *p != ' ')
8534                         p++;
8535                 if (*p)
8536                         type = simple_strtoul(p + 1, NULL, 0);
8537         }
8538
8539         IWL_DEBUG_INFO("Invoking measurement of type %d on "
8540                        "channel %d (for '%s')\n", type, params.channel, buf);
8541         iwl4965_get_measurement(priv, &params, type);
8542
8543         return count;
8544 }
8545
8546 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8547                    show_measurement, store_measurement);
8548 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8549
8550 static ssize_t store_retry_rate(struct device *d,
8551                                 struct device_attribute *attr,
8552                                 const char *buf, size_t count)
8553 {
8554         struct iwl4965_priv *priv = dev_get_drvdata(d);
8555
8556         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8557         if (priv->retry_rate <= 0)
8558                 priv->retry_rate = 1;
8559
8560         return count;
8561 }
8562
8563 static ssize_t show_retry_rate(struct device *d,
8564                                struct device_attribute *attr, char *buf)
8565 {
8566         struct iwl4965_priv *priv = dev_get_drvdata(d);
8567         return sprintf(buf, "%d", priv->retry_rate);
8568 }
8569
8570 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8571                    store_retry_rate);
8572
8573 static ssize_t store_power_level(struct device *d,
8574                                  struct device_attribute *attr,
8575                                  const char *buf, size_t count)
8576 {
8577         struct iwl4965_priv *priv = dev_get_drvdata(d);
8578         int rc;
8579         int mode;
8580
8581         mode = simple_strtoul(buf, NULL, 0);
8582         mutex_lock(&priv->mutex);
8583
8584         if (!iwl4965_is_ready(priv)) {
8585                 rc = -EAGAIN;
8586                 goto out;
8587         }
8588
8589         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8590                 mode = IWL_POWER_AC;
8591         else
8592                 mode |= IWL_POWER_ENABLED;
8593
8594         if (mode != priv->power_mode) {
8595                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8596                 if (rc) {
8597                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8598                         goto out;
8599                 }
8600                 priv->power_mode = mode;
8601         }
8602
8603         rc = count;
8604
8605  out:
8606         mutex_unlock(&priv->mutex);
8607         return rc;
8608 }
8609
8610 #define MAX_WX_STRING 80
8611
8612 /* Values are in microsecond */
8613 static const s32 timeout_duration[] = {
8614         350000,
8615         250000,
8616         75000,
8617         37000,
8618         25000,
8619 };
8620 static const s32 period_duration[] = {
8621         400000,
8622         700000,
8623         1000000,
8624         1000000,
8625         1000000
8626 };
8627
8628 static ssize_t show_power_level(struct device *d,
8629                                 struct device_attribute *attr, char *buf)
8630 {
8631         struct iwl4965_priv *priv = dev_get_drvdata(d);
8632         int level = IWL_POWER_LEVEL(priv->power_mode);
8633         char *p = buf;
8634
8635         p += sprintf(p, "%d ", level);
8636         switch (level) {
8637         case IWL_POWER_MODE_CAM:
8638         case IWL_POWER_AC:
8639                 p += sprintf(p, "(AC)");
8640                 break;
8641         case IWL_POWER_BATTERY:
8642                 p += sprintf(p, "(BATTERY)");
8643                 break;
8644         default:
8645                 p += sprintf(p,
8646                              "(Timeout %dms, Period %dms)",
8647                              timeout_duration[level - 1] / 1000,
8648                              period_duration[level - 1] / 1000);
8649         }
8650
8651         if (!(priv->power_mode & IWL_POWER_ENABLED))
8652                 p += sprintf(p, " OFF\n");
8653         else
8654                 p += sprintf(p, " \n");
8655
8656         return (p - buf + 1);
8657
8658 }
8659
8660 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8661                    store_power_level);
8662
8663 static ssize_t show_channels(struct device *d,
8664                              struct device_attribute *attr, char *buf)
8665 {
8666         struct iwl4965_priv *priv = dev_get_drvdata(d);
8667         int len = 0, i;
8668         struct ieee80211_channel *channels = NULL;
8669         const struct ieee80211_hw_mode *hw_mode = NULL;
8670         int count = 0;
8671
8672         if (!iwl4965_is_ready(priv))
8673                 return -EAGAIN;
8674
8675         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211G);
8676         if (!hw_mode)
8677                 hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211B);
8678         if (hw_mode) {
8679                 channels = hw_mode->channels;
8680                 count = hw_mode->num_channels;
8681         }
8682
8683         len +=
8684             sprintf(&buf[len],
8685                     "Displaying %d channels in 2.4GHz band "
8686                     "(802.11bg):\n", count);
8687
8688         for (i = 0; i < count; i++)
8689                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8690                                channels[i].chan,
8691                                channels[i].power_level,
8692                                channels[i].
8693                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8694                                " (IEEE 802.11h required)" : "",
8695                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8696                                 || (channels[i].
8697                                     flag &
8698                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8699                                ", IBSS",
8700                                channels[i].
8701                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8702                                "active/passive" : "passive only");
8703
8704         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211A);
8705         if (hw_mode) {
8706                 channels = hw_mode->channels;
8707                 count = hw_mode->num_channels;
8708         } else {
8709                 channels = NULL;
8710                 count = 0;
8711         }
8712
8713         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8714                        "(802.11a):\n", count);
8715
8716         for (i = 0; i < count; i++)
8717                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8718                                channels[i].chan,
8719                                channels[i].power_level,
8720                                channels[i].
8721                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8722                                " (IEEE 802.11h required)" : "",
8723                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8724                                 || (channels[i].
8725                                     flag &
8726                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8727                                ", IBSS",
8728                                channels[i].
8729                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8730                                "active/passive" : "passive only");
8731
8732         return len;
8733 }
8734
8735 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8736
8737 static ssize_t show_statistics(struct device *d,
8738                                struct device_attribute *attr, char *buf)
8739 {
8740         struct iwl4965_priv *priv = dev_get_drvdata(d);
8741         u32 size = sizeof(struct iwl4965_notif_statistics);
8742         u32 len = 0, ofs = 0;
8743         u8 *data = (u8 *) & priv->statistics;
8744         int rc = 0;
8745
8746         if (!iwl4965_is_alive(priv))
8747                 return -EAGAIN;
8748
8749         mutex_lock(&priv->mutex);
8750         rc = iwl4965_send_statistics_request(priv);
8751         mutex_unlock(&priv->mutex);
8752
8753         if (rc) {
8754                 len = sprintf(buf,
8755                               "Error sending statistics request: 0x%08X\n", rc);
8756                 return len;
8757         }
8758
8759         while (size && (PAGE_SIZE - len)) {
8760                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8761                                    PAGE_SIZE - len, 1);
8762                 len = strlen(buf);
8763                 if (PAGE_SIZE - len)
8764                         buf[len++] = '\n';
8765
8766                 ofs += 16;
8767                 size -= min(size, 16U);
8768         }
8769
8770         return len;
8771 }
8772
8773 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8774
8775 static ssize_t show_antenna(struct device *d,
8776                             struct device_attribute *attr, char *buf)
8777 {
8778         struct iwl4965_priv *priv = dev_get_drvdata(d);
8779
8780         if (!iwl4965_is_alive(priv))
8781                 return -EAGAIN;
8782
8783         return sprintf(buf, "%d\n", priv->antenna);
8784 }
8785
8786 static ssize_t store_antenna(struct device *d,
8787                              struct device_attribute *attr,
8788                              const char *buf, size_t count)
8789 {
8790         int ant;
8791         struct iwl4965_priv *priv = dev_get_drvdata(d);
8792
8793         if (count == 0)
8794                 return 0;
8795
8796         if (sscanf(buf, "%1i", &ant) != 1) {
8797                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8798                 return count;
8799         }
8800
8801         if ((ant >= 0) && (ant <= 2)) {
8802                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8803                 priv->antenna = (enum iwl4965_antenna)ant;
8804         } else
8805                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8806
8807
8808         return count;
8809 }
8810
8811 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8812
8813 static ssize_t show_status(struct device *d,
8814                            struct device_attribute *attr, char *buf)
8815 {
8816         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8817         if (!iwl4965_is_alive(priv))
8818                 return -EAGAIN;
8819         return sprintf(buf, "0x%08x\n", (int)priv->status);
8820 }
8821
8822 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8823
8824 static ssize_t dump_error_log(struct device *d,
8825                               struct device_attribute *attr,
8826                               const char *buf, size_t count)
8827 {
8828         char *p = (char *)buf;
8829
8830         if (p[0] == '1')
8831                 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8832
8833         return strnlen(buf, count);
8834 }
8835
8836 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8837
8838 static ssize_t dump_event_log(struct device *d,
8839                               struct device_attribute *attr,
8840                               const char *buf, size_t count)
8841 {
8842         char *p = (char *)buf;
8843
8844         if (p[0] == '1')
8845                 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8846
8847         return strnlen(buf, count);
8848 }
8849
8850 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8851
8852 /*****************************************************************************
8853  *
8854  * driver setup and teardown
8855  *
8856  *****************************************************************************/
8857
8858 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8859 {
8860         priv->workqueue = create_workqueue(DRV_NAME);
8861
8862         init_waitqueue_head(&priv->wait_command_queue);
8863
8864         INIT_WORK(&priv->up, iwl4965_bg_up);
8865         INIT_WORK(&priv->restart, iwl4965_bg_restart);
8866         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8867         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8868         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8869         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8870         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8871         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8872         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8873         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8874         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8875         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8876
8877         iwl4965_hw_setup_deferred_work(priv);
8878
8879         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8880                      iwl4965_irq_tasklet, (unsigned long)priv);
8881 }
8882
8883 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
8884 {
8885         iwl4965_hw_cancel_deferred_work(priv);
8886
8887         cancel_delayed_work_sync(&priv->init_alive_start);
8888         cancel_delayed_work(&priv->scan_check);
8889         cancel_delayed_work(&priv->alive_start);
8890         cancel_delayed_work(&priv->post_associate);
8891         cancel_work_sync(&priv->beacon_update);
8892 }
8893
8894 static struct attribute *iwl4965_sysfs_entries[] = {
8895         &dev_attr_antenna.attr,
8896         &dev_attr_channels.attr,
8897         &dev_attr_dump_errors.attr,
8898         &dev_attr_dump_events.attr,
8899         &dev_attr_flags.attr,
8900         &dev_attr_filter_flags.attr,
8901 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8902         &dev_attr_measurement.attr,
8903 #endif
8904         &dev_attr_power_level.attr,
8905         &dev_attr_retry_rate.attr,
8906         &dev_attr_rf_kill.attr,
8907         &dev_attr_rs_window.attr,
8908         &dev_attr_statistics.attr,
8909         &dev_attr_status.attr,
8910         &dev_attr_temperature.attr,
8911         &dev_attr_tune.attr,
8912         &dev_attr_tx_power.attr,
8913
8914         NULL
8915 };
8916
8917 static struct attribute_group iwl4965_attribute_group = {
8918         .name = NULL,           /* put in device directory */
8919         .attrs = iwl4965_sysfs_entries,
8920 };
8921
8922 static struct ieee80211_ops iwl4965_hw_ops = {
8923         .tx = iwl4965_mac_tx,
8924         .start = iwl4965_mac_start,
8925         .stop = iwl4965_mac_stop,
8926         .add_interface = iwl4965_mac_add_interface,
8927         .remove_interface = iwl4965_mac_remove_interface,
8928         .config = iwl4965_mac_config,
8929         .config_interface = iwl4965_mac_config_interface,
8930         .configure_filter = iwl4965_configure_filter,
8931         .set_key = iwl4965_mac_set_key,
8932         .get_stats = iwl4965_mac_get_stats,
8933         .get_tx_stats = iwl4965_mac_get_tx_stats,
8934         .conf_tx = iwl4965_mac_conf_tx,
8935         .get_tsf = iwl4965_mac_get_tsf,
8936         .reset_tsf = iwl4965_mac_reset_tsf,
8937         .beacon_update = iwl4965_mac_beacon_update,
8938         .erp_ie_changed = iwl4965_mac_erp_ie_changed,
8939 #ifdef CONFIG_IWL4965_HT
8940         .conf_ht = iwl4965_mac_conf_ht,
8941         .get_ht_capab = iwl4965_mac_get_ht_capab,
8942 #ifdef CONFIG_IWL4965_HT_AGG
8943         .ht_tx_agg_start = iwl4965_mac_ht_tx_agg_start,
8944         .ht_tx_agg_stop = iwl4965_mac_ht_tx_agg_stop,
8945         .ht_rx_agg_start = iwl4965_mac_ht_rx_agg_start,
8946         .ht_rx_agg_stop = iwl4965_mac_ht_rx_agg_stop,
8947 #endif  /* CONFIG_IWL4965_HT_AGG */
8948 #endif  /* CONFIG_IWL4965_HT */
8949         .hw_scan = iwl4965_mac_hw_scan
8950 };
8951
8952 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8953 {
8954         int err = 0;
8955         struct iwl4965_priv *priv;
8956         struct ieee80211_hw *hw;
8957         int i;
8958
8959         if (iwl4965_param_disable_hw_scan) {
8960                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8961                 iwl4965_hw_ops.hw_scan = NULL;
8962         }
8963
8964         if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8965             (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8966                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8967                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8968                 err = -EINVAL;
8969                 goto out;
8970         }
8971
8972         /* mac80211 allocates memory for this device instance, including
8973          *   space for this driver's private structure */
8974         hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
8975         if (hw == NULL) {
8976                 IWL_ERROR("Can not allocate network device\n");
8977                 err = -ENOMEM;
8978                 goto out;
8979         }
8980         SET_IEEE80211_DEV(hw, &pdev->dev);
8981
8982         hw->rate_control_algorithm = "iwl-4965-rs";
8983
8984         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8985         priv = hw->priv;
8986         priv->hw = hw;
8987
8988         priv->pci_dev = pdev;
8989         priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
8990 #ifdef CONFIG_IWL4965_DEBUG
8991         iwl4965_debug_level = iwl4965_param_debug;
8992         atomic_set(&priv->restrict_refcnt, 0);
8993 #endif
8994         priv->retry_rate = 1;
8995
8996         priv->ibss_beacon = NULL;
8997
8998         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8999          *   the range of signal quality values that we'll provide.
9000          * Negative values for level/noise indicate that we'll provide dBm.
9001          * For WE, at least, non-0 values here *enable* display of values
9002          *   in app (iwconfig). */
9003         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
9004         hw->max_noise = -20;    /* noise level, negative indicates dBm */
9005         hw->max_signal = 100;   /* link quality indication (%) */
9006
9007         /* Tell mac80211 our Tx characteristics */
9008         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
9009
9010         hw->queues = 4;
9011 #ifdef CONFIG_IWL4965_HT
9012 #ifdef CONFIG_IWL4965_HT_AGG
9013         hw->queues = 16;
9014 #endif /* CONFIG_IWL4965_HT_AGG */
9015 #endif /* CONFIG_IWL4965_HT */
9016
9017         spin_lock_init(&priv->lock);
9018         spin_lock_init(&priv->power_data.lock);
9019         spin_lock_init(&priv->sta_lock);
9020         spin_lock_init(&priv->hcmd_lock);
9021         spin_lock_init(&priv->lq_mngr.lock);
9022
9023         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9024                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9025
9026         INIT_LIST_HEAD(&priv->free_frames);
9027
9028         mutex_init(&priv->mutex);
9029         if (pci_enable_device(pdev)) {
9030                 err = -ENODEV;
9031                 goto out_ieee80211_free_hw;
9032         }
9033
9034         pci_set_master(pdev);
9035
9036         iwl4965_clear_stations_table(priv);
9037
9038         priv->data_retry_limit = -1;
9039         priv->ieee_channels = NULL;
9040         priv->ieee_rates = NULL;
9041         priv->phymode = -1;
9042
9043         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9044         if (!err)
9045                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9046         if (err) {
9047                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9048                 goto out_pci_disable_device;
9049         }
9050
9051         pci_set_drvdata(pdev, priv);
9052         err = pci_request_regions(pdev, DRV_NAME);
9053         if (err)
9054                 goto out_pci_disable_device;
9055         /* We disable the RETRY_TIMEOUT register (0x41) to keep
9056          * PCI Tx retries from interfering with C3 CPU state */
9057         pci_write_config_byte(pdev, 0x41, 0x00);
9058         priv->hw_base = pci_iomap(pdev, 0, 0);
9059         if (!priv->hw_base) {
9060                 err = -ENODEV;
9061                 goto out_pci_release_regions;
9062         }
9063
9064         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9065                         (unsigned long long) pci_resource_len(pdev, 0));
9066         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9067
9068         /* Initialize module parameter values here */
9069
9070         if (iwl4965_param_disable) {
9071                 set_bit(STATUS_RF_KILL_SW, &priv->status);
9072                 IWL_DEBUG_INFO("Radio disabled.\n");
9073         }
9074
9075         priv->iw_mode = IEEE80211_IF_TYPE_STA;
9076
9077         priv->ps_mode = 0;
9078         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9079         priv->is_ht_enabled = 1;
9080         priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9081         priv->valid_antenna = 0x7;      /* assume all 3 connected */
9082         priv->ps_mode = IWL_MIMO_PS_NONE;
9083
9084         iwl4965_set_rxon_chain(priv);
9085
9086         printk(KERN_INFO DRV_NAME
9087                ": Detected Intel Wireless WiFi Link 4965AGN\n");
9088
9089         /* Device-specific setup */
9090         if (iwl4965_hw_set_hw_setting(priv)) {
9091                 IWL_ERROR("failed to set hw settings\n");
9092                 mutex_unlock(&priv->mutex);
9093                 goto out_iounmap;
9094         }
9095
9096 #ifdef CONFIG_IWL4965_QOS
9097         if (iwl4965_param_qos_enable)
9098                 priv->qos_data.qos_enable = 1;
9099
9100         iwl4965_reset_qos(priv);
9101
9102         priv->qos_data.qos_active = 0;
9103         priv->qos_data.qos_cap.val = 0;
9104 #endif /* CONFIG_IWL4965_QOS */
9105
9106         iwl4965_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9107         iwl4965_setup_deferred_work(priv);
9108         iwl4965_setup_rx_handlers(priv);
9109
9110         priv->rates_mask = IWL_RATES_MASK;
9111         /* If power management is turned on, default to AC mode */
9112         priv->power_mode = IWL_POWER_AC;
9113         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9114
9115         iwl4965_disable_interrupts(priv);
9116
9117         pci_enable_msi(pdev);
9118
9119         err = request_irq(pdev->irq, iwl4965_isr, IRQF_SHARED, DRV_NAME, priv);
9120         if (err) {
9121                 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9122                 goto out_disable_msi;
9123         }
9124
9125         mutex_lock(&priv->mutex);
9126
9127         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9128         if (err) {
9129                 IWL_ERROR("failed to create sysfs device attributes\n");
9130                 mutex_unlock(&priv->mutex);
9131                 goto out_release_irq;
9132         }
9133
9134         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9135          * ucode filename and max sizes are card-specific. */
9136         err = iwl4965_read_ucode(priv);
9137         if (err) {
9138                 IWL_ERROR("Could not read microcode: %d\n", err);
9139                 mutex_unlock(&priv->mutex);
9140                 goto out_pci_alloc;
9141         }
9142
9143         mutex_unlock(&priv->mutex);
9144
9145         IWL_DEBUG_INFO("Queueing UP work.\n");
9146
9147         queue_work(priv->workqueue, &priv->up);
9148
9149         return 0;
9150
9151  out_pci_alloc:
9152         iwl4965_dealloc_ucode_pci(priv);
9153
9154         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9155
9156  out_release_irq:
9157         free_irq(pdev->irq, priv);
9158
9159  out_disable_msi:
9160         pci_disable_msi(pdev);
9161         destroy_workqueue(priv->workqueue);
9162         priv->workqueue = NULL;
9163         iwl4965_unset_hw_setting(priv);
9164
9165  out_iounmap:
9166         pci_iounmap(pdev, priv->hw_base);
9167  out_pci_release_regions:
9168         pci_release_regions(pdev);
9169  out_pci_disable_device:
9170         pci_disable_device(pdev);
9171         pci_set_drvdata(pdev, NULL);
9172  out_ieee80211_free_hw:
9173         ieee80211_free_hw(priv->hw);
9174  out:
9175         return err;
9176 }
9177
9178 static void iwl4965_pci_remove(struct pci_dev *pdev)
9179 {
9180         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9181         struct list_head *p, *q;
9182         int i;
9183
9184         if (!priv)
9185                 return;
9186
9187         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9188
9189         set_bit(STATUS_EXIT_PENDING, &priv->status);
9190
9191         iwl4965_down(priv);
9192
9193         /* Free MAC hash list for ADHOC */
9194         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9195                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9196                         list_del(p);
9197                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9198                 }
9199         }
9200
9201         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9202
9203         iwl4965_dealloc_ucode_pci(priv);
9204
9205         if (priv->rxq.bd)
9206                 iwl4965_rx_queue_free(priv, &priv->rxq);
9207         iwl4965_hw_txq_ctx_free(priv);
9208
9209         iwl4965_unset_hw_setting(priv);
9210         iwl4965_clear_stations_table(priv);
9211
9212         if (priv->mac80211_registered) {
9213                 ieee80211_unregister_hw(priv->hw);
9214                 iwl4965_rate_control_unregister(priv->hw);
9215         }
9216
9217         /*netif_stop_queue(dev); */
9218         flush_workqueue(priv->workqueue);
9219
9220         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9221          * priv->workqueue... so we can't take down the workqueue
9222          * until now... */
9223         destroy_workqueue(priv->workqueue);
9224         priv->workqueue = NULL;
9225
9226         free_irq(pdev->irq, priv);
9227         pci_disable_msi(pdev);
9228         pci_iounmap(pdev, priv->hw_base);
9229         pci_release_regions(pdev);
9230         pci_disable_device(pdev);
9231         pci_set_drvdata(pdev, NULL);
9232
9233         kfree(priv->channel_info);
9234
9235         kfree(priv->ieee_channels);
9236         kfree(priv->ieee_rates);
9237
9238         if (priv->ibss_beacon)
9239                 dev_kfree_skb(priv->ibss_beacon);
9240
9241         ieee80211_free_hw(priv->hw);
9242 }
9243
9244 #ifdef CONFIG_PM
9245
9246 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9247 {
9248         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9249
9250         set_bit(STATUS_IN_SUSPEND, &priv->status);
9251
9252         /* Take down the device; powers it off, etc. */
9253         iwl4965_down(priv);
9254
9255         if (priv->mac80211_registered)
9256                 ieee80211_stop_queues(priv->hw);
9257
9258         pci_save_state(pdev);
9259         pci_disable_device(pdev);
9260         pci_set_power_state(pdev, PCI_D3hot);
9261
9262         return 0;
9263 }
9264
9265 static void iwl4965_resume(struct iwl4965_priv *priv)
9266 {
9267         unsigned long flags;
9268
9269         /* The following it a temporary work around due to the
9270          * suspend / resume not fully initializing the NIC correctly.
9271          * Without all of the following, resume will not attempt to take
9272          * down the NIC (it shouldn't really need to) and will just try
9273          * and bring the NIC back up.  However that fails during the
9274          * ucode verification process.  This then causes iwl4965_down to be
9275          * called *after* iwl4965_hw_nic_init() has succeeded -- which
9276          * then lets the next init sequence succeed.  So, we've
9277          * replicated all of that NIC init code here... */
9278
9279         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9280
9281         iwl4965_hw_nic_init(priv);
9282
9283         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9284         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9285                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9286         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9287         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9288         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9289
9290         /* tell the device to stop sending interrupts */
9291         iwl4965_disable_interrupts(priv);
9292
9293         spin_lock_irqsave(&priv->lock, flags);
9294         iwl4965_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9295
9296         if (!iwl4965_grab_nic_access(priv)) {
9297                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
9298                                 APMG_CLK_VAL_DMA_CLK_RQT);
9299                 iwl4965_release_nic_access(priv);
9300         }
9301         spin_unlock_irqrestore(&priv->lock, flags);
9302
9303         udelay(5);
9304
9305         iwl4965_hw_nic_reset(priv);
9306
9307         /* Bring the device back up */
9308         clear_bit(STATUS_IN_SUSPEND, &priv->status);
9309         queue_work(priv->workqueue, &priv->up);
9310 }
9311
9312 static int iwl4965_pci_resume(struct pci_dev *pdev)
9313 {
9314         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9315         int err;
9316
9317         printk(KERN_INFO "Coming out of suspend...\n");
9318
9319         pci_set_power_state(pdev, PCI_D0);
9320         err = pci_enable_device(pdev);
9321         pci_restore_state(pdev);
9322
9323         /*
9324          * Suspend/Resume resets the PCI configuration space, so we have to
9325          * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9326          * from interfering with C3 CPU state. pci_restore_state won't help
9327          * here since it only restores the first 64 bytes pci config header.
9328          */
9329         pci_write_config_byte(pdev, 0x41, 0x00);
9330
9331         iwl4965_resume(priv);
9332
9333         return 0;
9334 }
9335
9336 #endif /* CONFIG_PM */
9337
9338 /*****************************************************************************
9339  *
9340  * driver and module entry point
9341  *
9342  *****************************************************************************/
9343
9344 static struct pci_driver iwl4965_driver = {
9345         .name = DRV_NAME,
9346         .id_table = iwl4965_hw_card_ids,
9347         .probe = iwl4965_pci_probe,
9348         .remove = __devexit_p(iwl4965_pci_remove),
9349 #ifdef CONFIG_PM
9350         .suspend = iwl4965_pci_suspend,
9351         .resume = iwl4965_pci_resume,
9352 #endif
9353 };
9354
9355 static int __init iwl4965_init(void)
9356 {
9357
9358         int ret;
9359         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9360         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9361         ret = pci_register_driver(&iwl4965_driver);
9362         if (ret) {
9363                 IWL_ERROR("Unable to initialize PCI module\n");
9364                 return ret;
9365         }
9366 #ifdef CONFIG_IWL4965_DEBUG
9367         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9368         if (ret) {
9369                 IWL_ERROR("Unable to create driver sysfs file\n");
9370                 pci_unregister_driver(&iwl4965_driver);
9371                 return ret;
9372         }
9373 #endif
9374
9375         return ret;
9376 }
9377
9378 static void __exit iwl4965_exit(void)
9379 {
9380 #ifdef CONFIG_IWL4965_DEBUG
9381         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9382 #endif
9383         pci_unregister_driver(&iwl4965_driver);
9384 }
9385
9386 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9387 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9388 module_param_named(disable, iwl4965_param_disable, int, 0444);
9389 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9390 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9391 MODULE_PARM_DESC(hwcrypto,
9392                  "using hardware crypto engine (default 0 [software])\n");
9393 module_param_named(debug, iwl4965_param_debug, int, 0444);
9394 MODULE_PARM_DESC(debug, "debug output mask");
9395 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9396 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9397
9398 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9399 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9400
9401 /* QoS */
9402 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9403 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9404
9405 module_exit(iwl4965_exit);
9406 module_init(iwl4965_init);