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/skbuff.h>
  52 #include <linux/netdevice.h>
  53 #include <linux/etherdevice.h>
  54 #include <linux/if_arp.h>
  55
  56 #include <net/ieee80211_radiotap.h>
  57 #include <net/mac80211.h>
  58
  59 #include <asm/div64.h>
  60
  61 #define IWL 4965
  62
  63 #include "iwlwifi.h"
  64 #include "iwl-4965.h"
  65 #include "iwl-helpers.h"
  66
  67 #ifdef CONFIG_IWLWIFI_DEBUG
  68 u32 iwl_debug_level;
  69 #endif
  70
  71 /******************************************************************************
  72  *
  73  * module boiler plate
  74  *
  75  ******************************************************************************/
  76
  77 /* module parameters */
  78 int iwl_param_disable_hw_scan;
  79 int iwl_param_debug;
  80 int iwl_param_disable;      /* def: enable radio */
  81 int iwl_param_antenna;      /* def: 0 = both antennas (use diversity) */
  82 int iwl_param_hwcrypto;     /* def: using software encryption */
  83 int iwl_param_qos_enable = 1;
  84 int iwl_param_queues_num = IWL_MAX_NUM_QUEUES;
  85
  86 /*
  87  * module name, copyright, version, etc.
  88  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  89  */
  90
  91 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  92
  93 #ifdef CONFIG_IWLWIFI_DEBUG
  94 #define VD "d"
  95 #else
  96 #define VD
  97 #endif
  98
  99 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
 100 #define VS "s"
 101 #else
 102 #define VS
 103 #endif
 104
 105 #define IWLWIFI_VERSION "1.1.17k" VD VS
 106 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
 107 #define DRV_VERSION     IWLWIFI_VERSION
 108
 109 /* Change firmware file name, using "-" and incrementing number,
 110  *   *only* when uCode interface or architecture changes so that it
 111  *   is not compatible with earlier drivers.
 112  * This number will also appear in << 8 position of 1st dword of uCode file */
 113 #define IWL4965_UCODE_API "-1"
 114
 115 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 116 MODULE_VERSION(DRV_VERSION);
 117 MODULE_AUTHOR(DRV_COPYRIGHT);
 118 MODULE_LICENSE("GPL");
 119
 120 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
 121 {
 122         u16 fc = le16_to_cpu(hdr->frame_control);
 123         int hdr_len = ieee80211_get_hdrlen(fc);
 124
 125         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 126                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 127         return NULL;
 128 }
 129
 130 static const struct ieee80211_hw_mode *iwl_get_hw_mode(
 131                 struct iwl_priv *priv, int mode)
 132 {
 133         int i;
 134
 135         for (i = 0; i < 3; i++)
 136                 if (priv->modes[i].mode == mode)
 137                         return &priv->modes[i];
 138
 139         return NULL;
 140 }
 141
 142 static int iwl_is_empty_essid(const char *essid, int essid_len)
 143 {
 144         /* Single white space is for Linksys APs */
 145         if (essid_len == 1 && essid[0] == ' ')
 146                 return 1;
 147
 148         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 149         while (essid_len) {
 150                 essid_len--;
 151                 if (essid[essid_len] != '\0')
 152                         return 0;
 153         }
 154
 155         return 1;
 156 }
 157
 158 static const char *iwl_escape_essid(const char *essid, u8 essid_len)
 159 {
 160         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 161         const char *s = essid;
 162         char *d = escaped;
 163
 164         if (iwl_is_empty_essid(essid, essid_len)) {
 165                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 166                 return escaped;
 167         }
 168
 169         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 170         while (essid_len--) {
 171                 if (*s == '\0') {
 172                         *d++ = '\\';
 173                         *d++ = '0';
 174                         s++;
 175                 } else
 176                         *d++ = *s++;
 177         }
 178         *d = '\0';
 179         return escaped;
 180 }
 181
 182 static void iwl_print_hex_dump(int level, void *p, u32 len)
 183 {
 184 #ifdef CONFIG_IWLWIFI_DEBUG
 185         if (!(iwl_debug_level & level))
 186                 return;
 187
 188         print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
 189                         p, len, 1);
 190 #endif
 191 }
 192
 193 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 194  * DMA services
 195  *
 196  * Theory of operation
 197  *
 198  * A queue is a circular buffers with 'Read' and 'Write' pointers.
 199  * 2 empty entries always kept in the buffer to protect from overflow.
 200  *
 201  * For Tx queue, there are low mark and high mark limits. If, after queuing
 202  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 203  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 204  * Tx queue resumed.
 205  *
 206  * The IWL operates with six queues, one receive queue in the device's
 207  * sram, one transmit queue for sending commands to the device firmware,
 208  * and four transmit queues for data.
 209  ***************************************************/
 210
 211 static int iwl_queue_space(const struct iwl_queue *q)
 212 {
 213         int s = q->last_used - q->first_empty;
 214
 215         if (q->last_used > q->first_empty)
 216                 s -= q->n_bd;
 217
 218         if (s <= 0)
 219                 s += q->n_window;
 220         /* keep some reserve to not confuse empty and full situations */
 221         s -= 2;
 222         if (s < 0)
 223                 s = 0;
 224         return s;
 225 }
 226
 227 /* XXX: n_bd must be power-of-two size */
 228 static inline int iwl_queue_inc_wrap(int index, int n_bd)
 229 {
 230         return ++index & (n_bd - 1);
 231 }
 232
 233 /* XXX: n_bd must be power-of-two size */
 234 static inline int iwl_queue_dec_wrap(int index, int n_bd)
 235 {
 236         return --index & (n_bd - 1);
 237 }
 238
 239 static inline int x2_queue_used(const struct iwl_queue *q, int i)
 240 {
 241         return q->first_empty > q->last_used ?
 242                 (i >= q->last_used && i < q->first_empty) :
 243                 !(i < q->last_used && i >= q->first_empty);
 244 }
 245
 246 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
 247 {
 248         if (is_huge)
 249                 return q->n_window;
 250
 251         return index & (q->n_window - 1);
 252 }
 253
 254 static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
 255                           int count, int slots_num, u32 id)
 256 {
 257         q->n_bd = count;
 258         q->n_window = slots_num;
 259         q->id = id;
 260
 261         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 262          * and iwl_queue_dec_wrap are broken. */
 263         BUG_ON(!is_power_of_2(count));
 264
 265         /* slots_num must be power-of-two size, otherwise
 266          * get_cmd_index is broken. */
 267         BUG_ON(!is_power_of_2(slots_num));
 268
 269         q->low_mark = q->n_window / 4;
 270         if (q->low_mark < 4)
 271                 q->low_mark = 4;
 272
 273         q->high_mark = q->n_window / 8;
 274         if (q->high_mark < 2)
 275                 q->high_mark = 2;
 276
 277         q->first_empty = q->last_used = 0;
 278
 279         return 0;
 280 }
 281
 282 static int iwl_tx_queue_alloc(struct iwl_priv *priv,
 283                               struct iwl_tx_queue *txq, u32 id)
 284 {
 285         struct pci_dev *dev = priv->pci_dev;
 286
 287         if (id != IWL_CMD_QUEUE_NUM) {
 288                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 289                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 290                 if (!txq->txb) {
 291                         IWL_ERROR("kmalloc for auxilary BD "
 292                                   "structures failed\n");
 293                         goto error;
 294                 }
 295         } else
 296                 txq->txb = NULL;
 297
 298         txq->bd = pci_alloc_consistent(dev,
 299                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 300                         &txq->q.dma_addr);
 301
 302         if (!txq->bd) {
 303                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 304                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 305                 goto error;
 306         }
 307         txq->q.id = id;
 308
 309         return 0;
 310
 311  error:
 312         if (txq->txb) {
 313                 kfree(txq->txb);
 314                 txq->txb = NULL;
 315         }
 316
 317         return -ENOMEM;
 318 }
 319
 320 int iwl_tx_queue_init(struct iwl_priv *priv,
 321                       struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
 322 {
 323         struct pci_dev *dev = priv->pci_dev;
 324         int len;
 325         int rc = 0;
 326
 327         /* alocate command space + one big command for scan since scan
 328          * command is very huge the system will not have two scan at the
 329          * same time */
 330         len = sizeof(struct iwl_cmd) * slots_num;
 331         if (txq_id == IWL_CMD_QUEUE_NUM)
 332                 len +=  IWL_MAX_SCAN_SIZE;
 333         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 334         if (!txq->cmd)
 335                 return -ENOMEM;
 336
 337         rc = iwl_tx_queue_alloc(priv, txq, txq_id);
 338         if (rc) {
 339                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 340
 341                 return -ENOMEM;
 342         }
 343         txq->need_update = 0;
 344
 345         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 346          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 347         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 348         iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 349
 350         iwl_hw_tx_queue_init(priv, txq);
 351
 352         return 0;
 353 }
 354
 355 /**
 356  * iwl_tx_queue_free - Deallocate DMA queue.
 357  * @txq: Transmit queue to deallocate.
 358  *
 359  * Empty queue by removing and destroying all BD's.
 360  * Free all buffers.  txq itself is not freed.
 361  *
 362  */
 363 void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 364 {
 365         struct iwl_queue *q = &txq->q;
 366         struct pci_dev *dev = priv->pci_dev;
 367         int len;
 368
 369         if (q->n_bd == 0)
 370                 return;
 371
 372         /* first, empty all BD's */
 373         for (; q->first_empty != q->last_used;
 374              q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd))
 375                 iwl_hw_txq_free_tfd(priv, txq);
 376
 377         len = sizeof(struct iwl_cmd) * q->n_window;
 378         if (q->id == IWL_CMD_QUEUE_NUM)
 379                 len += IWL_MAX_SCAN_SIZE;
 380
 381         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 382
 383         /* free buffers belonging to queue itself */
 384         if (txq->q.n_bd)
 385                 pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
 386                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 387
 388         if (txq->txb) {
 389                 kfree(txq->txb);
 390                 txq->txb = NULL;
 391         }
 392
 393         /* 0 fill whole structure */
 394         memset(txq, 0, sizeof(*txq));
 395 }
 396
 397 const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 398
 399 /*************** STATION TABLE MANAGEMENT ****
 400  *
 401  * NOTE:  This needs to be overhauled to better synchronize between
 402  * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
 403  *
 404  * mac80211 should also be examined to determine if sta_info is duplicating
 405  * the functionality provided here
 406  */
 407
 408 /**************************************************************/
 409
 410 #if 0 /* temparary disable till we add real remove station */
 411 static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 412 {
 413         int index = IWL_INVALID_STATION;
 414         int i;
 415         unsigned long flags;
 416
 417         spin_lock_irqsave(&priv->sta_lock, flags);
 418
 419         if (is_ap)
 420                 index = IWL_AP_ID;
 421         else if (is_broadcast_ether_addr(addr))
 422                 index = priv->hw_setting.bcast_sta_id;
 423         else
 424                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 425                         if (priv->stations[i].used &&
 426                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 427                                                 addr)) {
 428                                 index = i;
 429                                 break;
 430                         }
 431
 432         if (unlikely(index == IWL_INVALID_STATION))
 433                 goto out;
 434
 435         if (priv->stations[index].used) {
 436                 priv->stations[index].used = 0;
 437                 priv->num_stations--;
 438         }
 439
 440         BUG_ON(priv->num_stations < 0);
 441
 442 out:
 443         spin_unlock_irqrestore(&priv->sta_lock, flags);
 444         return 0;
 445 }
 446 #endif
 447
 448 static void iwl_clear_stations_table(struct iwl_priv *priv)
 449 {
 450         unsigned long flags;
 451
 452         spin_lock_irqsave(&priv->sta_lock, flags);
 453
 454         priv->num_stations = 0;
 455         memset(priv->stations, 0, sizeof(priv->stations));
 456
 457         spin_unlock_irqrestore(&priv->sta_lock, flags);
 458 }
 459
 460 u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
 461 {
 462         int i;
 463         int index = IWL_INVALID_STATION;
 464         struct iwl_station_entry *station;
 465         unsigned long flags_spin;
 466         DECLARE_MAC_BUF(mac);
 467
 468         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 469         if (is_ap)
 470                 index = IWL_AP_ID;
 471         else if (is_broadcast_ether_addr(addr))
 472                 index = priv->hw_setting.bcast_sta_id;
 473         else
 474                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 475                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 476                                                 addr)) {
 477                                 index = i;
 478                                 break;
 479                         }
 480
 481                         if (!priv->stations[i].used &&
 482                             index == IWL_INVALID_STATION)
 483                                 index = i;
 484                 }
 485
 486
 487         /* These twh conditions has the same outcome but keep them separate
 488           since they have different meaning */
 489         if (unlikely(index == IWL_INVALID_STATION)) {
 490                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 491                 return index;
 492         }
 493
 494         if (priv->stations[index].used &&
 495             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 496                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 497                 return index;
 498         }
 499
 500
 501         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 502         station = &priv->stations[index];
 503         station->used = 1;
 504         priv->num_stations++;
 505
 506         memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
 507         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 508         station->sta.mode = 0;
 509         station->sta.sta.sta_id = index;
 510         station->sta.station_flags = 0;
 511
 512 #ifdef CONFIG_IWLWIFI_HT
 513         /* BCAST station and IBSS stations do not work in HT mode */
 514         if (index != priv->hw_setting.bcast_sta_id &&
 515             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 516                 iwl4965_set_ht_add_station(priv, index);
 517 #endif /*CONFIG_IWLWIFI_HT*/
 518
 519         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 520         iwl_send_add_station(priv, &station->sta, flags);
 521         return index;
 522
 523 }
 524
 525 /*************** DRIVER STATUS FUNCTIONS   *****/
 526
 527 static inline int iwl_is_ready(struct iwl_priv *priv)
 528 {
 529         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 530          * set but EXIT_PENDING is not */
 531         return test_bit(STATUS_READY, &priv->status) &&
 532                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 533                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 534 }
 535
 536 static inline int iwl_is_alive(struct iwl_priv *priv)
 537 {
 538         return test_bit(STATUS_ALIVE, &priv->status);
 539 }
 540
 541 static inline int iwl_is_init(struct iwl_priv *priv)
 542 {
 543         return test_bit(STATUS_INIT, &priv->status);
 544 }
 545
 546 static inline int iwl_is_rfkill(struct iwl_priv *priv)
 547 {
 548         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 549                test_bit(STATUS_RF_KILL_SW, &priv->status);
 550 }
 551
 552 static inline int iwl_is_ready_rf(struct iwl_priv *priv)
 553 {
 554
 555         if (iwl_is_rfkill(priv))
 556                 return 0;
 557
 558         return iwl_is_ready(priv);
 559 }
 560
 561 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 562
 563 #define IWL_CMD(x) case x : return #x
 564
 565 static const char *get_cmd_string(u8 cmd)
 566 {
 567         switch (cmd) {
 568                 IWL_CMD(REPLY_ALIVE);
 569                 IWL_CMD(REPLY_ERROR);
 570                 IWL_CMD(REPLY_RXON);
 571                 IWL_CMD(REPLY_RXON_ASSOC);
 572                 IWL_CMD(REPLY_QOS_PARAM);
 573                 IWL_CMD(REPLY_RXON_TIMING);
 574                 IWL_CMD(REPLY_ADD_STA);
 575                 IWL_CMD(REPLY_REMOVE_STA);
 576                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 577                 IWL_CMD(REPLY_TX);
 578                 IWL_CMD(REPLY_RATE_SCALE);
 579                 IWL_CMD(REPLY_LEDS_CMD);
 580                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 581                 IWL_CMD(RADAR_NOTIFICATION);
 582                 IWL_CMD(REPLY_QUIET_CMD);
 583                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 584                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 585                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 586                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 587                 IWL_CMD(POWER_TABLE_CMD);
 588                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 589                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 590                 IWL_CMD(REPLY_SCAN_CMD);
 591                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 592                 IWL_CMD(SCAN_START_NOTIFICATION);
 593                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 594                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 595                 IWL_CMD(BEACON_NOTIFICATION);
 596                 IWL_CMD(REPLY_TX_BEACON);
 597                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 598                 IWL_CMD(QUIET_NOTIFICATION);
 599                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 600                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 601                 IWL_CMD(REPLY_BT_CONFIG);
 602                 IWL_CMD(REPLY_STATISTICS_CMD);
 603                 IWL_CMD(STATISTICS_NOTIFICATION);
 604                 IWL_CMD(REPLY_CARD_STATE_CMD);
 605                 IWL_CMD(CARD_STATE_NOTIFICATION);
 606                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 607                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
 608                 IWL_CMD(SENSITIVITY_CMD);
 609                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
 610                 IWL_CMD(REPLY_RX_PHY_CMD);
 611                 IWL_CMD(REPLY_RX_MPDU_CMD);
 612                 IWL_CMD(REPLY_4965_RX);
 613                 IWL_CMD(REPLY_COMPRESSED_BA);
 614         default:
 615                 return "UNKNOWN";
 616
 617         }
 618 }
 619
 620 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 621
 622 /**
 623  * iwl_enqueue_hcmd - enqueue a uCode command
 624  * @priv: device private data point
 625  * @cmd: a point to the ucode command structure
 626  *
 627  * The function returns < 0 values to indicate the operation is
 628  * failed. On success, it turns the index (> 0) of command in the
 629  * command queue.
 630  */
 631 static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 632 {
 633         struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 634         struct iwl_queue *q = &txq->q;
 635         struct iwl_tfd_frame *tfd;
 636         u32 *control_flags;
 637         struct iwl_cmd *out_cmd;
 638         u32 idx;
 639         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 640         dma_addr_t phys_addr;
 641         int ret;
 642         unsigned long flags;
 643
 644         /* If any of the command structures end up being larger than
 645          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 646          * we will need to increase the size of the TFD entries */
 647         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 648                !(cmd->meta.flags & CMD_SIZE_HUGE));
 649
 650         if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 651                 IWL_ERROR("No space for Tx\n");
 652                 return -ENOSPC;
 653         }
 654
 655         spin_lock_irqsave(&priv->hcmd_lock, flags);
 656
 657         tfd = &txq->bd[q->first_empty];
 658         memset(tfd, 0, sizeof(*tfd));
 659
 660         control_flags = (u32 *) tfd;
 661
 662         idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE);
 663         out_cmd = &txq->cmd[idx];
 664
 665         out_cmd->hdr.cmd = cmd->id;
 666         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 667         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 668
 669         /* At this point, the out_cmd now has all of the incoming cmd
 670          * information */
 671
 672         out_cmd->hdr.flags = 0;
 673         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 674                         INDEX_TO_SEQ(q->first_empty));
 675         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 676                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 677
 678         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 679                         offsetof(struct iwl_cmd, hdr);
 680         iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 681
 682         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 683                      "%d bytes at %d[%d]:%d\n",
 684                      get_cmd_string(out_cmd->hdr.cmd),
 685                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 686                      fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM);
 687
 688         txq->need_update = 1;
 689         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 690         q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
 691         iwl_tx_queue_update_write_ptr(priv, txq);
 692
 693         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 694         return ret ? ret : idx;
 695 }
 696
 697 int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 698 {
 699         int ret;
 700
 701         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 702
 703         /* An asynchronous command can not expect an SKB to be set. */
 704         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 705
 706         /* An asynchronous command MUST have a callback. */
 707         BUG_ON(!cmd->meta.u.callback);
 708
 709         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 710                 return -EBUSY;
 711
 712         ret = iwl_enqueue_hcmd(priv, cmd);
 713         if (ret < 0) {
 714                 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
 715                           get_cmd_string(cmd->id), ret);
 716                 return ret;
 717         }
 718         return 0;
 719 }
 720
 721 int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 722 {
 723         int cmd_idx;
 724         int ret;
 725         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 726
 727         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 728
 729          /* A synchronous command can not have a callback set. */
 730         BUG_ON(cmd->meta.u.callback != NULL);
 731
 732         if (atomic_xchg(&entry, 1)) {
 733                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 734                           get_cmd_string(cmd->id));
 735                 return -EBUSY;
 736         }
 737
 738         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 739
 740         if (cmd->meta.flags & CMD_WANT_SKB)
 741                 cmd->meta.source = &cmd->meta;
 742
 743         cmd_idx = iwl_enqueue_hcmd(priv, cmd);
 744         if (cmd_idx < 0) {
 745                 ret = cmd_idx;
 746                 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
 747                           get_cmd_string(cmd->id), ret);
 748                 goto out;
 749         }
 750
 751         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 752                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 753                         HOST_COMPLETE_TIMEOUT);
 754         if (!ret) {
 755                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 756                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 757                                   get_cmd_string(cmd->id),
 758                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 759
 760                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 761                         ret = -ETIMEDOUT;
 762                         goto cancel;
 763                 }
 764         }
 765
 766         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 767                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 768                                get_cmd_string(cmd->id));
 769                 ret = -ECANCELED;
 770                 goto fail;
 771         }
 772         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 773                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 774                                get_cmd_string(cmd->id));
 775                 ret = -EIO;
 776                 goto fail;
 777         }
 778         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 779                 IWL_ERROR("Error: Response NULL in '%s'\n",
 780                           get_cmd_string(cmd->id));
 781                 ret = -EIO;
 782                 goto out;
 783         }
 784
 785         ret = 0;
 786         goto out;
 787
 788 cancel:
 789         if (cmd->meta.flags & CMD_WANT_SKB) {
 790                 struct iwl_cmd *qcmd;
 791
 792                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 793                  * TX cmd queue. Otherwise in case the cmd comes
 794                  * in later, it will possibly set an invalid
 795                  * address (cmd->meta.source). */
 796                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 797                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 798         }
 799 fail:
 800         if (cmd->meta.u.skb) {
 801                 dev_kfree_skb_any(cmd->meta.u.skb);
 802                 cmd->meta.u.skb = NULL;
 803         }
 804 out:
 805         atomic_set(&entry, 0);
 806         return ret;
 807 }
 808
 809 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 810 {
 811         /* A command can not be asynchronous AND expect an SKB to be set. */
 812         BUG_ON((cmd->meta.flags & CMD_ASYNC) &&
 813                (cmd->meta.flags & CMD_WANT_SKB));
 814
 815         if (cmd->meta.flags & CMD_ASYNC)
 816                 return iwl_send_cmd_async(priv, cmd);
 817
 818         return iwl_send_cmd_sync(priv, cmd);
 819 }
 820
 821 int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
 822 {
 823         struct iwl_host_cmd cmd = {
 824                 .id = id,
 825                 .len = len,
 826                 .data = data,
 827         };
 828
 829         return iwl_send_cmd_sync(priv, &cmd);
 830 }
 831
 832 static int __must_check iwl_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
 833 {
 834         struct iwl_host_cmd cmd = {
 835                 .id = id,
 836                 .len = sizeof(val),
 837                 .data = &val,
 838         };
 839
 840         return iwl_send_cmd_sync(priv, &cmd);
 841 }
 842
 843 int iwl_send_statistics_request(struct iwl_priv *priv)
 844 {
 845         return iwl_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 846 }
 847
 848 /**
 849  * iwl_rxon_add_station - add station into station table.
 850  *
 851  * there is only one AP station with id= IWL_AP_ID
 852  * NOTE: mutex must be held before calling the this fnction
 853 */
 854 static int iwl_rxon_add_station(struct iwl_priv *priv,
 855                                 const u8 *addr, int is_ap)
 856 {
 857         u8 sta_id;
 858
 859         sta_id = iwl_add_station(priv, addr, is_ap, 0);
 860         iwl4965_add_station(priv, addr, is_ap);
 861
 862         return sta_id;
 863 }
 864
 865 /**
 866  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
 867  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 868  * @channel: Any channel valid for the requested phymode
 869
 870  * In addition to setting the staging RXON, priv->phymode is also set.
 871  *
 872  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 873  * in the staging RXON flag structure based on the phymode
 874  */
 875 static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel)
 876 {
 877         if (!iwl_get_channel_info(priv, phymode, channel)) {
 878                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 879                                channel, phymode);
 880                 return -EINVAL;
 881         }
 882
 883         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 884             (priv->phymode == phymode))
 885                 return 0;
 886
 887         priv->staging_rxon.channel = cpu_to_le16(channel);
 888         if (phymode == MODE_IEEE80211A)
 889                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 890         else
 891                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 892
 893         priv->phymode = phymode;
 894
 895         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
 896
 897         return 0;
 898 }
 899
 900 /**
 901  * iwl_check_rxon_cmd - validate RXON structure is valid
 902  *
 903  * NOTE:  This is really only useful during development and can eventually
 904  * be #ifdef'd out once the driver is stable and folks aren't actively
 905  * making changes
 906  */
 907 static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 908 {
 909         int error = 0;
 910         int counter = 1;
 911
 912         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 913                 error |= le32_to_cpu(rxon->flags &
 914                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 915                                  RXON_FLG_RADAR_DETECT_MSK));
 916                 if (error)
 917                         IWL_WARNING("check 24G fields %d | %d\n",
 918                                     counter++, error);
 919         } else {
 920                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 921                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 922                 if (error)
 923                         IWL_WARNING("check 52 fields %d | %d\n",
 924                                     counter++, error);
 925                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 926                 if (error)
 927                         IWL_WARNING("check 52 CCK %d | %d\n",
 928                                     counter++, error);
 929         }
 930         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 931         if (error)
 932                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 933
 934         /* make sure basic rates 6Mbps and 1Mbps are supported */
 935         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 936                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 937         if (error)
 938                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 939
 940         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 941         if (error)
 942                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 943
 944         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 945                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 946         if (error)
 947                 IWL_WARNING("check CCK and short slot %d | %d\n",
 948                             counter++, error);
 949
 950         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 951                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 952         if (error)
 953                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 954                             counter++, error);
 955
 956         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 957                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 958         if (error)
 959                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 960                             counter++, error);
 961
 962         if (error)
 963                 IWL_WARNING("Tuning to channel %d\n",
 964                             le16_to_cpu(rxon->channel));
 965
 966         if (error) {
 967                 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
 968                 return -1;
 969         }
 970         return 0;
 971 }
 972
 973 /**
 974  * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
 975  * @priv: staging_rxon is comapred to active_rxon
 976  *
 977  * If the RXON structure is changing sufficient to require a new
 978  * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
 979  * to indicate a new tune is required.
 980  */
 981 static int iwl_full_rxon_required(struct iwl_priv *priv)
 982 {
 983
 984         /* These items are only settable from the full RXON command */
 985         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 986             compare_ether_addr(priv->staging_rxon.bssid_addr,
 987                                priv->active_rxon.bssid_addr) ||
 988             compare_ether_addr(priv->staging_rxon.node_addr,
 989                                priv->active_rxon.node_addr) ||
 990             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 991                                priv->active_rxon.wlap_bssid_addr) ||
 992             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 993             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 994             (priv->staging_rxon.air_propagation !=
 995              priv->active_rxon.air_propagation) ||
 996             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 997              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 998             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 999              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1000             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1001             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1002                 return 1;
1003
1004         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1005          * be updated with the RXON_ASSOC command -- however only some
1006          * flag transitions are allowed using RXON_ASSOC */
1007
1008         /* Check if we are not switching bands */
1009         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1010             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1011                 return 1;
1012
1013         /* Check if we are switching association toggle */
1014         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1015                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1016                 return 1;
1017
1018         return 0;
1019 }
1020
1021 static int iwl_send_rxon_assoc(struct iwl_priv *priv)
1022 {
1023         int rc = 0;
1024         struct iwl_rx_packet *res = NULL;
1025         struct iwl_rxon_assoc_cmd rxon_assoc;
1026         struct iwl_host_cmd cmd = {
1027                 .id = REPLY_RXON_ASSOC,
1028                 .len = sizeof(rxon_assoc),
1029                 .meta.flags = CMD_WANT_SKB,
1030                 .data = &rxon_assoc,
1031         };
1032         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1033         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1034
1035         if ((rxon1->flags == rxon2->flags) &&
1036             (rxon1->filter_flags == rxon2->filter_flags) &&
1037             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1038             (rxon1->ofdm_ht_single_stream_basic_rates ==
1039              rxon2->ofdm_ht_single_stream_basic_rates) &&
1040             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1041              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1042             (rxon1->rx_chain == rxon2->rx_chain) &&
1043             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1044                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1045                 return 0;
1046         }
1047
1048         rxon_assoc.flags = priv->staging_rxon.flags;
1049         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1050         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1051         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1052         rxon_assoc.reserved = 0;
1053         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1054             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1055         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1056             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1057         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1058
1059         rc = iwl_send_cmd_sync(priv, &cmd);
1060         if (rc)
1061                 return rc;
1062
1063         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1064         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1065                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1066                 rc = -EIO;
1067         }
1068
1069         priv->alloc_rxb_skb--;
1070         dev_kfree_skb_any(cmd.meta.u.skb);
1071
1072         return rc;
1073 }
1074
1075 /**
1076  * iwl_commit_rxon - commit staging_rxon to hardware
1077  *
1078  * The RXON command in staging_rxon is commited to the hardware and
1079  * the active_rxon structure is updated with the new data.  This
1080  * function correctly transitions out of the RXON_ASSOC_MSK state if
1081  * a HW tune is required based on the RXON structure changes.
1082  */
1083 static int iwl_commit_rxon(struct iwl_priv *priv)
1084 {
1085         /* cast away the const for active_rxon in this function */
1086         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1087         DECLARE_MAC_BUF(mac);
1088         int rc = 0;
1089
1090         if (!iwl_is_alive(priv))
1091                 return -1;
1092
1093         /* always get timestamp with Rx frame */
1094         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1095
1096         rc = iwl_check_rxon_cmd(&priv->staging_rxon);
1097         if (rc) {
1098                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1099                 return -EINVAL;
1100         }
1101
1102         /* If we don't need to send a full RXON, we can use
1103          * iwl_rxon_assoc_cmd which is used to reconfigure filter
1104          * and other flags for the current radio configuration. */
1105         if (!iwl_full_rxon_required(priv)) {
1106                 rc = iwl_send_rxon_assoc(priv);
1107                 if (rc) {
1108                         IWL_ERROR("Error setting RXON_ASSOC "
1109                                   "configuration (%d).\n", rc);
1110                         return rc;
1111                 }
1112
1113                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1114
1115                 return 0;
1116         }
1117
1118         /* station table will be cleared */
1119         priv->assoc_station_added = 0;
1120
1121 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1122         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1123         if (!priv->error_recovering)
1124                 priv->start_calib = 0;
1125
1126         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1127 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1128
1129         /* If we are currently associated and the new config requires
1130          * an RXON_ASSOC and the new config wants the associated mask enabled,
1131          * we must clear the associated from the active configuration
1132          * before we apply the new config */
1133         if (iwl_is_associated(priv) &&
1134             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1135                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1136                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1137
1138                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1139                                       sizeof(struct iwl_rxon_cmd),
1140                                       &priv->active_rxon);
1141
1142                 /* If the mask clearing failed then we set
1143                  * active_rxon back to what it was previously */
1144                 if (rc) {
1145                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1146                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1147                                   "configuration (%d).\n", rc);
1148                         return rc;
1149                 }
1150         }
1151
1152         IWL_DEBUG_INFO("Sending RXON\n"
1153                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1154                        "* channel = %d\n"
1155                        "* bssid = %s\n",
1156                        ((priv->staging_rxon.filter_flags &
1157                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1158                        le16_to_cpu(priv->staging_rxon.channel),
1159                        print_mac(mac, priv->staging_rxon.bssid_addr));
1160
1161         /* Apply the new configuration */
1162         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1163                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
1164         if (rc) {
1165                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1166                 return rc;
1167         }
1168
1169         iwl_clear_stations_table(priv);
1170
1171 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1172         if (!priv->error_recovering)
1173                 priv->start_calib = 0;
1174
1175         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1176         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1177 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1178
1179         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1180
1181         /* If we issue a new RXON command which required a tune then we must
1182          * send a new TXPOWER command or we won't be able to Tx any frames */
1183         rc = iwl_hw_reg_send_txpower(priv);
1184         if (rc) {
1185                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1186                 return rc;
1187         }
1188
1189         /* Add the broadcast address so we can send broadcast frames */
1190         if (iwl_rxon_add_station(priv, BROADCAST_ADDR, 0) ==
1191             IWL_INVALID_STATION) {
1192                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1193                 return -EIO;
1194         }
1195
1196         /* If we have set the ASSOC_MSK and we are in BSS mode then
1197          * add the IWL_AP_ID to the station rate table */
1198         if (iwl_is_associated(priv) &&
1199             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1200                 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1201                     == IWL_INVALID_STATION) {
1202                         IWL_ERROR("Error adding AP address for transmit.\n");
1203                         return -EIO;
1204                 }
1205                 priv->assoc_station_added = 1;
1206         }
1207
1208         return 0;
1209 }
1210
1211 static int iwl_send_bt_config(struct iwl_priv *priv)
1212 {
1213         struct iwl_bt_cmd bt_cmd = {
1214                 .flags = 3,
1215                 .lead_time = 0xAA,
1216                 .max_kill = 1,
1217                 .kill_ack_mask = 0,
1218                 .kill_cts_mask = 0,
1219         };
1220
1221         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1222                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
1223 }
1224
1225 static int iwl_send_scan_abort(struct iwl_priv *priv)
1226 {
1227         int rc = 0;
1228         struct iwl_rx_packet *res;
1229         struct iwl_host_cmd cmd = {
1230                 .id = REPLY_SCAN_ABORT_CMD,
1231                 .meta.flags = CMD_WANT_SKB,
1232         };
1233
1234         /* If there isn't a scan actively going on in the hardware
1235          * then we are in between scan bands and not actually
1236          * actively scanning, so don't send the abort command */
1237         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1238                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1239                 return 0;
1240         }
1241
1242         rc = iwl_send_cmd_sync(priv, &cmd);
1243         if (rc) {
1244                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1245                 return rc;
1246         }
1247
1248         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1249         if (res->u.status != CAN_ABORT_STATUS) {
1250                 /* The scan abort will return 1 for success or
1251                  * 2 for "failure".  A failure condition can be
1252                  * due to simply not being in an active scan which
1253                  * can occur if we send the scan abort before we
1254                  * the microcode has notified us that a scan is
1255                  * completed. */
1256                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1257                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1258                 clear_bit(STATUS_SCAN_HW, &priv->status);
1259         }
1260
1261         dev_kfree_skb_any(cmd.meta.u.skb);
1262
1263         return rc;
1264 }
1265
1266 static int iwl_card_state_sync_callback(struct iwl_priv *priv,
1267                                         struct iwl_cmd *cmd,
1268                                         struct sk_buff *skb)
1269 {
1270         return 1;
1271 }
1272
1273 /*
1274  * CARD_STATE_CMD
1275  *
1276  * Use: Sets the internal card state to enable, disable, or halt
1277  *
1278  * When in the 'enable' state the card operates as normal.
1279  * When in the 'disable' state, the card enters into a low power mode.
1280  * When in the 'halt' state, the card is shut down and must be fully
1281  * restarted to come back on.
1282  */
1283 static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1284 {
1285         struct iwl_host_cmd cmd = {
1286                 .id = REPLY_CARD_STATE_CMD,
1287                 .len = sizeof(u32),
1288                 .data = &flags,
1289                 .meta.flags = meta_flag,
1290         };
1291
1292         if (meta_flag & CMD_ASYNC)
1293                 cmd.meta.u.callback = iwl_card_state_sync_callback;
1294
1295         return iwl_send_cmd(priv, &cmd);
1296 }
1297
1298 static int iwl_add_sta_sync_callback(struct iwl_priv *priv,
1299                                      struct iwl_cmd *cmd, struct sk_buff *skb)
1300 {
1301         struct iwl_rx_packet *res = NULL;
1302
1303         if (!skb) {
1304                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1305                 return 1;
1306         }
1307
1308         res = (struct iwl_rx_packet *)skb->data;
1309         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1310                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1311                           res->hdr.flags);
1312                 return 1;
1313         }
1314
1315         switch (res->u.add_sta.status) {
1316         case ADD_STA_SUCCESS_MSK:
1317                 break;
1318         default:
1319                 break;
1320         }
1321
1322         /* We didn't cache the SKB; let the caller free it */
1323         return 1;
1324 }
1325
1326 int iwl_send_add_station(struct iwl_priv *priv,
1327                          struct iwl_addsta_cmd *sta, u8 flags)
1328 {
1329         struct iwl_rx_packet *res = NULL;
1330         int rc = 0;
1331         struct iwl_host_cmd cmd = {
1332                 .id = REPLY_ADD_STA,
1333                 .len = sizeof(struct iwl_addsta_cmd),
1334                 .meta.flags = flags,
1335                 .data = sta,
1336         };
1337
1338         if (flags & CMD_ASYNC)
1339                 cmd.meta.u.callback = iwl_add_sta_sync_callback;
1340         else
1341                 cmd.meta.flags |= CMD_WANT_SKB;
1342
1343         rc = iwl_send_cmd(priv, &cmd);
1344
1345         if (rc || (flags & CMD_ASYNC))
1346                 return rc;
1347
1348         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1349         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1350                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1351                           res->hdr.flags);
1352                 rc = -EIO;
1353         }
1354
1355         if (rc == 0) {
1356                 switch (res->u.add_sta.status) {
1357                 case ADD_STA_SUCCESS_MSK:
1358                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1359                         break;
1360                 default:
1361                         rc = -EIO;
1362                         IWL_WARNING("REPLY_ADD_STA failed\n");
1363                         break;
1364                 }
1365         }
1366
1367         priv->alloc_rxb_skb--;
1368         dev_kfree_skb_any(cmd.meta.u.skb);
1369
1370         return rc;
1371 }
1372
1373 static int iwl_update_sta_key_info(struct iwl_priv *priv,
1374                                    struct ieee80211_key_conf *keyconf,
1375                                    u8 sta_id)
1376 {
1377         unsigned long flags;
1378         __le16 key_flags = 0;
1379
1380         switch (keyconf->alg) {
1381         case ALG_CCMP:
1382                 key_flags |= STA_KEY_FLG_CCMP;
1383                 key_flags |= cpu_to_le16(
1384                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1385                 key_flags &= ~STA_KEY_FLG_INVALID;
1386                 break;
1387         case ALG_TKIP:
1388         case ALG_WEP:
1389                 return -EINVAL;
1390         default:
1391                 return -EINVAL;
1392         }
1393         spin_lock_irqsave(&priv->sta_lock, flags);
1394         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1395         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1396         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1397                keyconf->keylen);
1398
1399         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1400                keyconf->keylen);
1401         priv->stations[sta_id].sta.key.key_flags = key_flags;
1402         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1403         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1404
1405         spin_unlock_irqrestore(&priv->sta_lock, flags);
1406
1407         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1408         iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1409         return 0;
1410 }
1411
1412 static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1413 {
1414         unsigned long flags;
1415
1416         spin_lock_irqsave(&priv->sta_lock, flags);
1417         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
1418         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo));
1419         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1420         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1421         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1422         spin_unlock_irqrestore(&priv->sta_lock, flags);
1423
1424         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1425         iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1426         return 0;
1427 }
1428
1429 static void iwl_clear_free_frames(struct iwl_priv *priv)
1430 {
1431         struct list_head *element;
1432
1433         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1434                        priv->frames_count);
1435
1436         while (!list_empty(&priv->free_frames)) {
1437                 element = priv->free_frames.next;
1438                 list_del(element);
1439                 kfree(list_entry(element, struct iwl_frame, list));
1440                 priv->frames_count--;
1441         }
1442
1443         if (priv->frames_count) {
1444                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1445                             priv->frames_count);
1446                 priv->frames_count = 0;
1447         }
1448 }
1449
1450 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
1451 {
1452         struct iwl_frame *frame;
1453         struct list_head *element;
1454         if (list_empty(&priv->free_frames)) {
1455                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1456                 if (!frame) {
1457                         IWL_ERROR("Could not allocate frame!\n");
1458                         return NULL;
1459                 }
1460
1461                 priv->frames_count++;
1462                 return frame;
1463         }
1464
1465         element = priv->free_frames.next;
1466         list_del(element);
1467         return list_entry(element, struct iwl_frame, list);
1468 }
1469
1470 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
1471 {
1472         memset(frame, 0, sizeof(*frame));
1473         list_add(&frame->list, &priv->free_frames);
1474 }
1475
1476 unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
1477                                 struct ieee80211_hdr *hdr,
1478                                 const u8 *dest, int left)
1479 {
1480
1481         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1482             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1483              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1484                 return 0;
1485
1486         if (priv->ibss_beacon->len > left)
1487                 return 0;
1488
1489         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1490
1491         return priv->ibss_beacon->len;
1492 }
1493
1494 int iwl_rate_index_from_plcp(int plcp)
1495 {
1496         int i = 0;
1497
1498         if (plcp & RATE_MCS_HT_MSK) {
1499                 i = (plcp & 0xff);
1500
1501                 if (i >= IWL_RATE_MIMO_6M_PLCP)
1502                         i = i - IWL_RATE_MIMO_6M_PLCP;
1503
1504                 i += IWL_FIRST_OFDM_RATE;
1505                 /* skip 9M not supported in ht*/
1506                 if (i >= IWL_RATE_9M_INDEX)
1507                         i += 1;
1508                 if ((i >= IWL_FIRST_OFDM_RATE) &&
1509                     (i <= IWL_LAST_OFDM_RATE))
1510                         return i;
1511         } else {
1512                 for (i = 0; i < ARRAY_SIZE(iwl_rates); i++)
1513                         if (iwl_rates[i].plcp == (plcp &0xFF))
1514                                 return i;
1515         }
1516         return -1;
1517 }
1518
1519 static u8 iwl_rate_get_lowest_plcp(int rate_mask)
1520 {
1521         u8 i;
1522
1523         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1524              i = iwl_rates[i].next_ieee) {
1525                 if (rate_mask & (1 << i))
1526                         return iwl_rates[i].plcp;
1527         }
1528
1529         return IWL_RATE_INVALID;
1530 }
1531
1532 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
1533 {
1534         struct iwl_frame *frame;
1535         unsigned int frame_size;
1536         int rc;
1537         u8 rate;
1538
1539         frame = iwl_get_free_frame(priv);
1540
1541         if (!frame) {
1542                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1543                           "command.\n");
1544                 return -ENOMEM;
1545         }
1546
1547         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1548                 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic &
1549                                                 0xFF0);
1550                 if (rate == IWL_INVALID_RATE)
1551                         rate = IWL_RATE_6M_PLCP;
1552         } else {
1553                 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1554                 if (rate == IWL_INVALID_RATE)
1555                         rate = IWL_RATE_1M_PLCP;
1556         }
1557
1558         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
1559
1560         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1561                               &frame->u.cmd[0]);
1562
1563         iwl_free_frame(priv, frame);
1564
1565         return rc;
1566 }
1567
1568 /******************************************************************************
1569  *
1570  * EEPROM related functions
1571  *
1572  ******************************************************************************/
1573
1574 static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1575 {
1576         memcpy(mac, priv->eeprom.mac_address, 6);
1577 }
1578
1579 /**
1580  * iwl_eeprom_init - read EEPROM contents
1581  *
1582  * Load the EEPROM from adapter into priv->eeprom
1583  *
1584  * NOTE:  This routine uses the non-debug IO access functions.
1585  */
1586 int iwl_eeprom_init(struct iwl_priv *priv)
1587 {
1588         u16 *e = (u16 *)&priv->eeprom;
1589         u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1590         u32 r;
1591         int sz = sizeof(priv->eeprom);
1592         int rc;
1593         int i;
1594         u16 addr;
1595
1596         /* The EEPROM structure has several padding buffers within it
1597          * and when adding new EEPROM maps is subject to programmer errors
1598          * which may be very difficult to identify without explicitly
1599          * checking the resulting size of the eeprom map. */
1600         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1601
1602         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1603                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1604                 return -ENOENT;
1605         }
1606
1607         rc = iwl_eeprom_aqcuire_semaphore(priv);
1608         if (rc < 0) {
1609                 IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
1610                 return -ENOENT;
1611         }
1612
1613         /* eeprom is an array of 16bit values */
1614         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1615                 _iwl_write32(priv, CSR_EEPROM_REG, addr << 1);
1616                 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1617
1618                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1619                                         i += IWL_EEPROM_ACCESS_DELAY) {
1620                         r = _iwl_read_restricted(priv, CSR_EEPROM_REG);
1621                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1622                                 break;
1623                         udelay(IWL_EEPROM_ACCESS_DELAY);
1624                 }
1625
1626                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1627                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1628                         rc = -ETIMEDOUT;
1629                         goto done;
1630                 }
1631                 e[addr / 2] = le16_to_cpu(r >> 16);
1632         }
1633         rc = 0;
1634
1635 done:
1636         iwl_eeprom_release_semaphore(priv);
1637         return rc;
1638 }
1639
1640 /******************************************************************************
1641  *
1642  * Misc. internal state and helper functions
1643  *
1644  ******************************************************************************/
1645 #ifdef CONFIG_IWLWIFI_DEBUG
1646
1647 /**
1648  * iwl_report_frame - dump frame to syslog during debug sessions
1649  *
1650  * hack this function to show different aspects of received frames,
1651  * including selective frame dumps.
1652  * group100 parameter selects whether to show 1 out of 100 good frames.
1653  *
1654  * TODO:  ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1655  *        info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1656  *        is 3945-specific and gives bad output for 4965.  Need to split the
1657  *        functionality, keep common stuff here.
1658  */
1659 void iwl_report_frame(struct iwl_priv *priv,
1660                       struct iwl_rx_packet *pkt,
1661                       struct ieee80211_hdr *header, int group100)
1662 {
1663         u32 to_us;
1664         u32 print_summary = 0;
1665         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1666         u32 hundred = 0;
1667         u32 dataframe = 0;
1668         u16 fc;
1669         u16 seq_ctl;
1670         u16 channel;
1671         u16 phy_flags;
1672         int rate_sym;
1673         u16 length;
1674         u16 status;
1675         u16 bcn_tmr;
1676         u32 tsf_low;
1677         u64 tsf;
1678         u8 rssi;
1679         u8 agc;
1680         u16 sig_avg;
1681         u16 noise_diff;
1682         struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1683         struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1684         struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt);
1685         u8 *data = IWL_RX_DATA(pkt);
1686
1687         /* MAC header */
1688         fc = le16_to_cpu(header->frame_control);
1689         seq_ctl = le16_to_cpu(header->seq_ctrl);
1690
1691         /* metadata */
1692         channel = le16_to_cpu(rx_hdr->channel);
1693         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1694         rate_sym = rx_hdr->rate;
1695         length = le16_to_cpu(rx_hdr->len);
1696
1697         /* end-of-frame status and timestamp */
1698         status = le32_to_cpu(rx_end->status);
1699         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1700         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1701         tsf = le64_to_cpu(rx_end->timestamp);
1702
1703         /* signal statistics */
1704         rssi = rx_stats->rssi;
1705         agc = rx_stats->agc;
1706         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1707         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1708
1709         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1710
1711         /* if data frame is to us and all is good,
1712          *   (optionally) print summary for only 1 out of every 100 */
1713         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1714             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1715                 dataframe = 1;
1716                 if (!group100)
1717                         print_summary = 1;      /* print each frame */
1718                 else if (priv->framecnt_to_us < 100) {
1719                         priv->framecnt_to_us++;
1720                         print_summary = 0;
1721                 } else {
1722                         priv->framecnt_to_us = 0;
1723                         print_summary = 1;
1724                         hundred = 1;
1725                 }
1726         } else {
1727                 /* print summary for all other frames */
1728                 print_summary = 1;
1729         }
1730
1731         if (print_summary) {
1732                 char *title;
1733                 u32 rate;
1734
1735                 if (hundred)
1736                         title = "100Frames";
1737                 else if (fc & IEEE80211_FCTL_RETRY)
1738                         title = "Retry";
1739                 else if (ieee80211_is_assoc_response(fc))
1740                         title = "AscRsp";
1741                 else if (ieee80211_is_reassoc_response(fc))
1742                         title = "RasRsp";
1743                 else if (ieee80211_is_probe_response(fc)) {
1744                         title = "PrbRsp";
1745                         print_dump = 1; /* dump frame contents */
1746                 } else if (ieee80211_is_beacon(fc)) {
1747                         title = "Beacon";
1748                         print_dump = 1; /* dump frame contents */
1749                 } else if (ieee80211_is_atim(fc))
1750                         title = "ATIM";
1751                 else if (ieee80211_is_auth(fc))
1752                         title = "Auth";
1753                 else if (ieee80211_is_deauth(fc))
1754                         title = "DeAuth";
1755                 else if (ieee80211_is_disassoc(fc))
1756                         title = "DisAssoc";
1757                 else
1758                         title = "Frame";
1759
1760                 rate = iwl_rate_index_from_plcp(rate_sym);
1761                 if (rate == -1)
1762                         rate = 0;
1763                 else
1764                         rate = iwl_rates[rate].ieee / 2;
1765
1766                 /* print frame summary.
1767                  * MAC addresses show just the last byte (for brevity),
1768                  *    but you can hack it to show more, if you'd like to. */
1769                 if (dataframe)
1770                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1771                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1772                                      title, fc, header->addr1[5],
1773                                      length, rssi, channel, rate);
1774                 else {
1775                         /* src/dst addresses assume managed mode */
1776                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1777                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1778                                      "phy=0x%02x, chnl=%d\n",
1779                                      title, fc, header->addr1[5],
1780                                      header->addr3[5], rssi,
1781                                      tsf_low - priv->scan_start_tsf,
1782                                      phy_flags, channel);
1783                 }
1784         }
1785         if (print_dump)
1786                 iwl_print_hex_dump(IWL_DL_RX, data, length);
1787 }
1788 #endif
1789
1790 static void iwl_unset_hw_setting(struct iwl_priv *priv)
1791 {
1792         if (priv->hw_setting.shared_virt)
1793                 pci_free_consistent(priv->pci_dev,
1794                                     sizeof(struct iwl_shared),
1795                                     priv->hw_setting.shared_virt,
1796                                     priv->hw_setting.shared_phys);
1797 }
1798
1799 /**
1800  * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1801  *
1802  * return : set the bit for each supported rate insert in ie
1803  */
1804 static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1805                                     u16 basic_rate, int max_count)
1806 {
1807         u16 ret_rates = 0, bit;
1808         int i;
1809         u8 *rates;
1810
1811         rates = &(ie[1]);
1812
1813         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1814                 if (bit & supported_rate) {
1815                         ret_rates |= bit;
1816                         rates[*ie] = iwl_rates[i].ieee |
1817                             ((bit & basic_rate) ? 0x80 : 0x00);
1818                         *ie = *ie + 1;
1819                         if (*ie >= max_count)
1820                                 break;
1821                 }
1822         }
1823
1824         return ret_rates;
1825 }
1826
1827 #ifdef CONFIG_IWLWIFI_HT
1828 void static iwl_set_ht_capab(struct ieee80211_hw *hw,
1829                              struct ieee80211_ht_capability *ht_cap,
1830                              u8 use_wide_chan);
1831 #endif
1832
1833 /**
1834  * iwl_fill_probe_req - fill in all required fields and IE for probe request
1835  */
1836 static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1837                               struct ieee80211_mgmt *frame,
1838                               int left, int is_direct)
1839 {
1840         int len = 0;
1841         u8 *pos = NULL;
1842         u16 ret_rates;
1843
1844         /* Make sure there is enough space for the probe request,
1845          * two mandatory IEs and the data */
1846         left -= 24;
1847         if (left < 0)
1848                 return 0;
1849         len += 24;
1850
1851         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1852         memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN);
1853         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1854         memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN);
1855         frame->seq_ctrl = 0;
1856
1857         /* fill in our indirect SSID IE */
1858         /* ...next IE... */
1859
1860         left -= 2;
1861         if (left < 0)
1862                 return 0;
1863         len += 2;
1864         pos = &(frame->u.probe_req.variable[0]);
1865         *pos++ = WLAN_EID_SSID;
1866         *pos++ = 0;
1867
1868         /* fill in our direct SSID IE... */
1869         if (is_direct) {
1870                 /* ...next IE... */
1871                 left -= 2 + priv->essid_len;
1872                 if (left < 0)
1873                         return 0;
1874                 /* ... fill it in... */
1875                 *pos++ = WLAN_EID_SSID;
1876                 *pos++ = priv->essid_len;
1877                 memcpy(pos, priv->essid, priv->essid_len);
1878                 pos += priv->essid_len;
1879                 len += 2 + priv->essid_len;
1880         }
1881
1882         /* fill in supported rate */
1883         /* ...next IE... */
1884         left -= 2;
1885         if (left < 0)
1886                 return 0;
1887         /* ... fill it in... */
1888         *pos++ = WLAN_EID_SUPP_RATES;
1889         *pos = 0;
1890         ret_rates = priv->active_rate = priv->rates_mask;
1891         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1892
1893         iwl_supported_rate_to_ie(pos, priv->active_rate,
1894                                  priv->active_rate_basic, left);
1895         len += 2 + *pos;
1896         pos += (*pos) + 1;
1897         ret_rates = ~ret_rates & priv->active_rate;
1898
1899         if (ret_rates == 0)
1900                 goto fill_end;
1901
1902         /* fill in supported extended rate */
1903         /* ...next IE... */
1904         left -= 2;
1905         if (left < 0)
1906                 return 0;
1907         /* ... fill it in... */
1908         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1909         *pos = 0;
1910         iwl_supported_rate_to_ie(pos, ret_rates, priv->active_rate_basic, left);
1911         if (*pos > 0)
1912                 len += 2 + *pos;
1913
1914 #ifdef CONFIG_IWLWIFI_HT
1915         if (is_direct && priv->is_ht_enabled) {
1916                 u8 use_wide_chan = 1;
1917
1918                 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1919                         use_wide_chan = 0;
1920                 pos += (*pos) + 1;
1921                 *pos++ = WLAN_EID_HT_CAPABILITY;
1922                 *pos++ = sizeof(struct ieee80211_ht_capability);
1923                 iwl_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1924                                  use_wide_chan);
1925                 len += 2 + sizeof(struct ieee80211_ht_capability);
1926         }
1927 #endif  /*CONFIG_IWLWIFI_HT */
1928
1929  fill_end:
1930         return (u16)len;
1931 }
1932
1933 /*
1934  * QoS  support
1935 */
1936 #ifdef CONFIG_IWLWIFI_QOS
1937 static int iwl_send_qos_params_command(struct iwl_priv *priv,
1938                                        struct iwl_qosparam_cmd *qos)
1939 {
1940
1941         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1942                                 sizeof(struct iwl_qosparam_cmd), qos);
1943 }
1944
1945 static void iwl_reset_qos(struct iwl_priv *priv)
1946 {
1947         u16 cw_min = 15;
1948         u16 cw_max = 1023;
1949         u8 aifs = 2;
1950         u8 is_legacy = 0;
1951         unsigned long flags;
1952         int i;
1953
1954         spin_lock_irqsave(&priv->lock, flags);
1955         priv->qos_data.qos_active = 0;
1956
1957         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1958                 if (priv->qos_data.qos_enable)
1959                         priv->qos_data.qos_active = 1;
1960                 if (!(priv->active_rate & 0xfff0)) {
1961                         cw_min = 31;
1962                         is_legacy = 1;
1963                 }
1964         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1965                 if (priv->qos_data.qos_enable)
1966                         priv->qos_data.qos_active = 1;
1967         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1968                 cw_min = 31;
1969                 is_legacy = 1;
1970         }
1971
1972         if (priv->qos_data.qos_active)
1973                 aifs = 3;
1974
1975         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1976         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1977         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1978         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1979         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1980
1981         if (priv->qos_data.qos_active) {
1982                 i = 1;
1983                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1984                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1985                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1986                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1987                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1988
1989                 i = 2;
1990                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1991                         cpu_to_le16((cw_min + 1) / 2 - 1);
1992                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1993                         cpu_to_le16(cw_max);
1994                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1995                 if (is_legacy)
1996                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1997                                 cpu_to_le16(6016);
1998                 else
1999                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2000                                 cpu_to_le16(3008);
2001                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2002
2003                 i = 3;
2004                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2005                         cpu_to_le16((cw_min + 1) / 4 - 1);
2006                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2007                         cpu_to_le16((cw_max + 1) / 2 - 1);
2008                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2009                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2010                 if (is_legacy)
2011                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2012                                 cpu_to_le16(3264);
2013                 else
2014                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2015                                 cpu_to_le16(1504);
2016         } else {
2017                 for (i = 1; i < 4; i++) {
2018                         priv->qos_data.def_qos_parm.ac[i].cw_min =
2019                                 cpu_to_le16(cw_min);
2020                         priv->qos_data.def_qos_parm.ac[i].cw_max =
2021                                 cpu_to_le16(cw_max);
2022                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2023                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2024                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2025                 }
2026         }
2027         IWL_DEBUG_QOS("set QoS to default \n");
2028
2029         spin_unlock_irqrestore(&priv->lock, flags);
2030 }
2031
2032 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
2033 {
2034         unsigned long flags;
2035
2036         if (priv == NULL)
2037                 return;
2038
2039         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2040                 return;
2041
2042         if (!priv->qos_data.qos_enable)
2043                 return;
2044
2045         spin_lock_irqsave(&priv->lock, flags);
2046         priv->qos_data.def_qos_parm.qos_flags = 0;
2047
2048         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2049             !priv->qos_data.qos_cap.q_AP.txop_request)
2050                 priv->qos_data.def_qos_parm.qos_flags |=
2051                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2052
2053         if (priv->qos_data.qos_active)
2054                 priv->qos_data.def_qos_parm.qos_flags |=
2055                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2056
2057         spin_unlock_irqrestore(&priv->lock, flags);
2058
2059         if (force || iwl_is_associated(priv)) {
2060                 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2061                               priv->qos_data.qos_active);
2062
2063                 iwl_send_qos_params_command(priv,
2064                                 &(priv->qos_data.def_qos_parm));
2065         }
2066 }
2067
2068 #endif /* CONFIG_IWLWIFI_QOS */
2069 /*
2070  * Power management (not Tx power!) functions
2071  */
2072 #define MSEC_TO_USEC 1024
2073
2074 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2075 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2076 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2077 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2078                                      __constant_cpu_to_le32(X1), \
2079                                      __constant_cpu_to_le32(X2), \
2080                                      __constant_cpu_to_le32(X3), \
2081                                      __constant_cpu_to_le32(X4)}
2082
2083
2084 /* default power management (not Tx power) table values */
2085 /* for tim  0-10 */
2086 static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = {
2087         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2088         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2089         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2090         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2091         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2092         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2093 };
2094
2095 /* for tim > 10 */
2096 static struct iwl_power_vec_entry range_1[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),
2099                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2100         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2101                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2102         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2103                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2104         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2105         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2106                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2107 };
2108
2109 int iwl_power_init_handle(struct iwl_priv *priv)
2110 {
2111         int rc = 0, i;
2112         struct iwl_power_mgr *pow_data;
2113         int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC;
2114         u16 pci_pm;
2115
2116         IWL_DEBUG_POWER("Initialize power \n");
2117
2118         pow_data = &(priv->power_data);
2119
2120         memset(pow_data, 0, sizeof(*pow_data));
2121
2122         pow_data->active_index = IWL_POWER_RANGE_0;
2123         pow_data->dtim_val = 0xffff;
2124
2125         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2126         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2127
2128         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2129         if (rc != 0)
2130                 return 0;
2131         else {
2132                 struct iwl_powertable_cmd *cmd;
2133
2134                 IWL_DEBUG_POWER("adjust power command flags\n");
2135
2136                 for (i = 0; i < IWL_POWER_AC; i++) {
2137                         cmd = &pow_data->pwr_range_0[i].cmd;
2138
2139                         if (pci_pm & 0x1)
2140                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2141                         else
2142                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2143                 }
2144         }
2145         return rc;
2146 }
2147
2148 static int iwl_update_power_cmd(struct iwl_priv *priv,
2149                                 struct iwl_powertable_cmd *cmd, u32 mode)
2150 {
2151         int rc = 0, i;
2152         u8 skip;
2153         u32 max_sleep = 0;
2154         struct iwl_power_vec_entry *range;
2155         u8 period = 0;
2156         struct iwl_power_mgr *pow_data;
2157
2158         if (mode > IWL_POWER_INDEX_5) {
2159                 IWL_DEBUG_POWER("Error invalid power mode \n");
2160                 return -1;
2161         }
2162         pow_data = &(priv->power_data);
2163
2164         if (pow_data->active_index == IWL_POWER_RANGE_0)
2165                 range = &pow_data->pwr_range_0[0];
2166         else
2167                 range = &pow_data->pwr_range_1[1];
2168
2169         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd));
2170
2171 #ifdef IWL_MAC80211_DISABLE
2172         if (priv->assoc_network != NULL) {
2173                 unsigned long flags;
2174
2175                 period = priv->assoc_network->tim.tim_period;
2176         }
2177 #endif  /*IWL_MAC80211_DISABLE */
2178         skip = range[mode].no_dtim;
2179
2180         if (period == 0) {
2181                 period = 1;
2182                 skip = 0;
2183         }
2184
2185         if (skip == 0) {
2186                 max_sleep = period;
2187                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2188         } else {
2189                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2190                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2191                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2192         }
2193
2194         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2195                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2196                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2197         }
2198
2199         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2200         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2201         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2202         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2203                         le32_to_cpu(cmd->sleep_interval[0]),
2204                         le32_to_cpu(cmd->sleep_interval[1]),
2205                         le32_to_cpu(cmd->sleep_interval[2]),
2206                         le32_to_cpu(cmd->sleep_interval[3]),
2207                         le32_to_cpu(cmd->sleep_interval[4]));
2208
2209         return rc;
2210 }
2211
2212 static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode)
2213 {
2214         u32 final_mode = mode;
2215         int rc;
2216         struct iwl_powertable_cmd cmd;
2217
2218         /* If on battery, set to 3,
2219          * if plugged into AC power, set to CAM ("continuosly aware mode"),
2220          * else user level */
2221         switch (mode) {
2222         case IWL_POWER_BATTERY:
2223                 final_mode = IWL_POWER_INDEX_3;
2224                 break;
2225         case IWL_POWER_AC:
2226                 final_mode = IWL_POWER_MODE_CAM;
2227                 break;
2228         default:
2229                 final_mode = mode;
2230                 break;
2231         }
2232
2233         cmd.keep_alive_beacons = 0;
2234
2235         iwl_update_power_cmd(priv, &cmd, final_mode);
2236
2237         rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2238
2239         if (final_mode == IWL_POWER_MODE_CAM)
2240                 clear_bit(STATUS_POWER_PMI, &priv->status);
2241         else
2242                 set_bit(STATUS_POWER_PMI, &priv->status);
2243
2244         return rc;
2245 }
2246
2247 int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2248 {
2249         /* Filter incoming packets to determine if they are targeted toward
2250          * this network, discarding packets coming from ourselves */
2251         switch (priv->iw_mode) {
2252         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2253                 /* packets from our adapter are dropped (echo) */
2254                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2255                         return 0;
2256                 /* {broad,multi}cast packets to our IBSS go through */
2257                 if (is_multicast_ether_addr(header->addr1))
2258                         return !compare_ether_addr(header->addr3, priv->bssid);
2259                 /* packets to our adapter go through */
2260                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2261         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2262                 /* packets from our adapter are dropped (echo) */
2263                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2264                         return 0;
2265                 /* {broad,multi}cast packets to our BSS go through */
2266                 if (is_multicast_ether_addr(header->addr1))
2267                         return !compare_ether_addr(header->addr2, priv->bssid);
2268                 /* packets to our adapter go through */
2269                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2270         }
2271
2272         return 1;
2273 }
2274
2275 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2276
2277 const char *iwl_get_tx_fail_reason(u32 status)
2278 {
2279         switch (status & TX_STATUS_MSK) {
2280         case TX_STATUS_SUCCESS:
2281                 return "SUCCESS";
2282                 TX_STATUS_ENTRY(SHORT_LIMIT);
2283                 TX_STATUS_ENTRY(LONG_LIMIT);
2284                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2285                 TX_STATUS_ENTRY(MGMNT_ABORT);
2286                 TX_STATUS_ENTRY(NEXT_FRAG);
2287                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2288                 TX_STATUS_ENTRY(DEST_PS);
2289                 TX_STATUS_ENTRY(ABORTED);
2290                 TX_STATUS_ENTRY(BT_RETRY);
2291                 TX_STATUS_ENTRY(STA_INVALID);
2292                 TX_STATUS_ENTRY(FRAG_DROPPED);
2293                 TX_STATUS_ENTRY(TID_DISABLE);
2294                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2295                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2296                 TX_STATUS_ENTRY(TX_LOCKED);
2297                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2298         }
2299
2300         return "UNKNOWN";
2301 }
2302
2303 /**
2304  * iwl_scan_cancel - Cancel any currently executing HW scan
2305  *
2306  * NOTE: priv->mutex is not required before calling this function
2307  */
2308 static int iwl_scan_cancel(struct iwl_priv *priv)
2309 {
2310         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2311                 clear_bit(STATUS_SCANNING, &priv->status);
2312                 return 0;
2313         }
2314
2315         if (test_bit(STATUS_SCANNING, &priv->status)) {
2316                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2317                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2318                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2319                         queue_work(priv->workqueue, &priv->abort_scan);
2320
2321                 } else
2322                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2323
2324                 return test_bit(STATUS_SCANNING, &priv->status);
2325         }
2326
2327         return 0;
2328 }
2329
2330 /**
2331  * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2332  * @ms: amount of time to wait (in milliseconds) for scan to abort
2333  *
2334  * NOTE: priv->mutex must be held before calling this function
2335  */
2336 static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
2337 {
2338         unsigned long now = jiffies;
2339         int ret;
2340
2341         ret = iwl_scan_cancel(priv);
2342         if (ret && ms) {
2343                 mutex_unlock(&priv->mutex);
2344                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2345                                 test_bit(STATUS_SCANNING, &priv->status))
2346                         msleep(1);
2347                 mutex_lock(&priv->mutex);
2348
2349                 return test_bit(STATUS_SCANNING, &priv->status);
2350         }
2351
2352         return ret;
2353 }
2354
2355 static void iwl_sequence_reset(struct iwl_priv *priv)
2356 {
2357         /* Reset ieee stats */
2358
2359         /* We don't reset the net_device_stats (ieee->stats) on
2360          * re-association */
2361
2362         priv->last_seq_num = -1;
2363         priv->last_frag_num = -1;
2364         priv->last_packet_time = 0;
2365
2366         iwl_scan_cancel(priv);
2367 }
2368
2369 #define MAX_UCODE_BEACON_INTERVAL       4096
2370 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2371
2372 static __le16 iwl_adjust_beacon_interval(u16 beacon_val)
2373 {
2374         u16 new_val = 0;
2375         u16 beacon_factor = 0;
2376
2377         beacon_factor =
2378             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2379                 / MAX_UCODE_BEACON_INTERVAL;
2380         new_val = beacon_val / beacon_factor;
2381
2382         return cpu_to_le16(new_val);
2383 }
2384
2385 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
2386 {
2387         u64 interval_tm_unit;
2388         u64 tsf, result;
2389         unsigned long flags;
2390         struct ieee80211_conf *conf = NULL;
2391         u16 beacon_int = 0;
2392
2393         conf = ieee80211_get_hw_conf(priv->hw);
2394
2395         spin_lock_irqsave(&priv->lock, flags);
2396         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2397         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2398
2399         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2400
2401         tsf = priv->timestamp1;
2402         tsf = ((tsf << 32) | priv->timestamp0);
2403
2404         beacon_int = priv->beacon_int;
2405         spin_unlock_irqrestore(&priv->lock, flags);
2406
2407         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2408                 if (beacon_int == 0) {
2409                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2410                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2411                 } else {
2412                         priv->rxon_timing.beacon_interval =
2413                                 cpu_to_le16(beacon_int);
2414                         priv->rxon_timing.beacon_interval =
2415                             iwl_adjust_beacon_interval(
2416                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2417                 }
2418
2419                 priv->rxon_timing.atim_window = 0;
2420         } else {
2421                 priv->rxon_timing.beacon_interval =
2422                         iwl_adjust_beacon_interval(conf->beacon_int);
2423                 /* TODO: we need to get atim_window from upper stack
2424                  * for now we set to 0 */
2425                 priv->rxon_timing.atim_window = 0;
2426         }
2427
2428         interval_tm_unit =
2429                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2430         result = do_div(tsf, interval_tm_unit);
2431         priv->rxon_timing.beacon_init_val =
2432             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2433
2434         IWL_DEBUG_ASSOC
2435             ("beacon interval %d beacon timer %d beacon tim %d\n",
2436                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2437                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2438                 le16_to_cpu(priv->rxon_timing.atim_window));
2439 }
2440
2441 static int iwl_scan_initiate(struct iwl_priv *priv)
2442 {
2443         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2444                 IWL_ERROR("APs don't scan.\n");
2445                 return 0;
2446         }
2447
2448         if (!iwl_is_ready_rf(priv)) {
2449                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2450                 return -EIO;
2451         }
2452
2453         if (test_bit(STATUS_SCANNING, &priv->status)) {
2454                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2455                 return -EAGAIN;
2456         }
2457
2458         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2459                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2460                                "Queuing.\n");
2461                 return -EAGAIN;
2462         }
2463
2464         IWL_DEBUG_INFO("Starting scan...\n");
2465         priv->scan_bands = 2;
2466         set_bit(STATUS_SCANNING, &priv->status);
2467         priv->scan_start = jiffies;
2468         priv->scan_pass_start = priv->scan_start;
2469
2470         queue_work(priv->workqueue, &priv->request_scan);
2471
2472         return 0;
2473 }
2474
2475 static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2476 {
2477         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2478
2479         if (hw_decrypt)
2480                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2481         else
2482                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2483
2484         return 0;
2485 }
2486
2487 static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode)
2488 {
2489         if (phymode == MODE_IEEE80211A) {
2490                 priv->staging_rxon.flags &=
2491                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2492                       | RXON_FLG_CCK_MSK);
2493                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2494         } else {
2495                 /* Copied from iwl_bg_post_associate() */
2496                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2497                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2498                 else
2499                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2500
2501                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2502                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2503
2504                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2505                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2506                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2507         }
2508 }
2509
2510 /*
2511  * initilize rxon structure with default values fromm eeprom
2512  */
2513 static void iwl_connection_init_rx_config(struct iwl_priv *priv)
2514 {
2515         const struct iwl_channel_info *ch_info;
2516
2517         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2518
2519         switch (priv->iw_mode) {
2520         case IEEE80211_IF_TYPE_AP:
2521                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2522                 break;
2523
2524         case IEEE80211_IF_TYPE_STA:
2525                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2526                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2527                 break;
2528
2529         case IEEE80211_IF_TYPE_IBSS:
2530                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2531                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2532                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2533                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2534                 break;
2535
2536         case IEEE80211_IF_TYPE_MNTR:
2537                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2538                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2539                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2540                 break;
2541         }
2542
2543 #if 0
2544         /* TODO:  Figure out when short_preamble would be set and cache from
2545          * that */
2546         if (!hw_to_local(priv->hw)->short_preamble)
2547                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2548         else
2549                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2550 #endif
2551
2552         ch_info = iwl_get_channel_info(priv, priv->phymode,
2553                                        le16_to_cpu(priv->staging_rxon.channel));
2554
2555         if (!ch_info)
2556                 ch_info = &priv->channel_info[0];
2557
2558         /*
2559          * in some case A channels are all non IBSS
2560          * in this case force B/G channel
2561          */
2562         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2563             !(is_channel_ibss(ch_info)))
2564                 ch_info = &priv->channel_info[0];
2565
2566         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2567         if (is_channel_a_band(ch_info))
2568                 priv->phymode = MODE_IEEE80211A;
2569         else
2570                 priv->phymode = MODE_IEEE80211G;
2571
2572         iwl_set_flags_for_phymode(priv, priv->phymode);
2573
2574         priv->staging_rxon.ofdm_basic_rates =
2575             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2576         priv->staging_rxon.cck_basic_rates =
2577             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2578
2579         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2580                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2581         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2582         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2583         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2584         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2585         iwl4965_set_rxon_chain(priv);
2586 }
2587
2588 static int iwl_set_mode(struct iwl_priv *priv, int mode)
2589 {
2590         if (!iwl_is_ready_rf(priv))
2591                 return -EAGAIN;
2592
2593         if (mode == IEEE80211_IF_TYPE_IBSS) {
2594                 const struct iwl_channel_info *ch_info;
2595
2596                 ch_info = iwl_get_channel_info(priv,
2597                         priv->phymode,
2598                         le16_to_cpu(priv->staging_rxon.channel));
2599
2600                 if (!ch_info || !is_channel_ibss(ch_info)) {
2601                         IWL_ERROR("channel %d not IBSS channel\n",
2602                                   le16_to_cpu(priv->staging_rxon.channel));
2603                         return -EINVAL;
2604                 }
2605         }
2606
2607         cancel_delayed_work(&priv->scan_check);
2608         if (iwl_scan_cancel_timeout(priv, 100)) {
2609                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2610                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2611                 return -EAGAIN;
2612         }
2613
2614         priv->iw_mode = mode;
2615
2616         iwl_connection_init_rx_config(priv);
2617         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2618
2619         iwl_clear_stations_table(priv);
2620
2621         iwl_commit_rxon(priv);
2622
2623         return 0;
2624 }
2625
2626 static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2627                                       struct ieee80211_tx_control *ctl,
2628                                       struct iwl_cmd *cmd,
2629                                       struct sk_buff *skb_frag,
2630                                       int last_frag)
2631 {
2632         struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2633
2634         switch (keyinfo->alg) {
2635         case ALG_CCMP:
2636                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2637                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2638                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2639                 break;
2640
2641         case ALG_TKIP:
2642 #if 0
2643                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2644
2645                 if (last_frag)
2646                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2647                                8);
2648                 else
2649                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2650 #endif
2651                 break;
2652
2653         case ALG_WEP:
2654                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2655                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2656
2657                 if (keyinfo->keylen == 13)
2658                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2659
2660                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2661
2662                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2663                              "with key %d\n", ctl->key_idx);
2664                 break;
2665
2666         default:
2667                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2668                 break;
2669         }
2670 }
2671
2672 /*
2673  * handle build REPLY_TX command notification.
2674  */
2675 static void iwl_build_tx_cmd_basic(struct iwl_priv *priv,
2676                                   struct iwl_cmd *cmd,
2677                                   struct ieee80211_tx_control *ctrl,
2678                                   struct ieee80211_hdr *hdr,
2679                                   int is_unicast, u8 std_id)
2680 {
2681         __le16 *qc;
2682         u16 fc = le16_to_cpu(hdr->frame_control);
2683         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2684
2685         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2686         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2687                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2688                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2689                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2690                 if (ieee80211_is_probe_response(fc) &&
2691                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2692                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2693         } else {
2694                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2695                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2696         }
2697
2698         cmd->cmd.tx.sta_id = std_id;
2699         if (ieee80211_get_morefrag(hdr))
2700                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2701
2702         qc = ieee80211_get_qos_ctrl(hdr);
2703         if (qc) {
2704                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2705                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2706         } else
2707                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2708
2709         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2710                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2711                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2712         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2713                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2714                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2715         }
2716
2717         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2718                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2719
2720         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2721         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2722                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2723                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2724                         cmd->cmd.tx.timeout.pm_frame_timeout =
2725                                 cpu_to_le16(3);
2726                 else
2727                         cmd->cmd.tx.timeout.pm_frame_timeout =
2728                                 cpu_to_le16(2);
2729         } else
2730                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2731
2732         cmd->cmd.tx.driver_txop = 0;
2733         cmd->cmd.tx.tx_flags = tx_flags;
2734         cmd->cmd.tx.next_frame_len = 0;
2735 }
2736
2737 static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2738 {
2739         int sta_id;
2740         u16 fc = le16_to_cpu(hdr->frame_control);
2741         DECLARE_MAC_BUF(mac);
2742
2743         /* If this frame is broadcast or not data then use the broadcast
2744          * station id */
2745         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2746             is_multicast_ether_addr(hdr->addr1))
2747                 return priv->hw_setting.bcast_sta_id;
2748
2749         switch (priv->iw_mode) {
2750
2751         /* If this frame is part of a BSS network (we're a station), then
2752          * we use the AP's station id */
2753         case IEEE80211_IF_TYPE_STA:
2754                 return IWL_AP_ID;
2755
2756         /* If we are an AP, then find the station, or use BCAST */
2757         case IEEE80211_IF_TYPE_AP:
2758                 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2759                 if (sta_id != IWL_INVALID_STATION)
2760                         return sta_id;
2761                 return priv->hw_setting.bcast_sta_id;
2762
2763         /* If this frame is part of a IBSS network, then we use the
2764          * target specific station id */
2765         case IEEE80211_IF_TYPE_IBSS:
2766                 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2767                 if (sta_id != IWL_INVALID_STATION)
2768                         return sta_id;
2769
2770                 sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2771
2772                 if (sta_id != IWL_INVALID_STATION)
2773                         return sta_id;
2774
2775                 IWL_DEBUG_DROP("Station %s not in station map. "
2776                                "Defaulting to broadcast...\n",
2777                                print_mac(mac, hdr->addr1));
2778                 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2779                 return priv->hw_setting.bcast_sta_id;
2780
2781         default:
2782                 IWL_WARNING("Unkown mode of operation: %d", priv->iw_mode);
2783                 return priv->hw_setting.bcast_sta_id;
2784         }
2785 }
2786
2787 /*
2788  * start REPLY_TX command process
2789  */
2790 static int iwl_tx_skb(struct iwl_priv *priv,
2791                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2792 {
2793         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2794         struct iwl_tfd_frame *tfd;
2795         u32 *control_flags;
2796         int txq_id = ctl->queue;
2797         struct iwl_tx_queue *txq = NULL;
2798         struct iwl_queue *q = NULL;
2799         dma_addr_t phys_addr;
2800         dma_addr_t txcmd_phys;
2801         struct iwl_cmd *out_cmd = NULL;
2802         u16 len, idx, len_org;
2803         u8 id, hdr_len, unicast;
2804         u8 sta_id;
2805         u16 seq_number = 0;
2806         u16 fc;
2807         __le16 *qc;
2808         u8 wait_write_ptr = 0;
2809         unsigned long flags;
2810         int rc;
2811
2812         spin_lock_irqsave(&priv->lock, flags);
2813         if (iwl_is_rfkill(priv)) {
2814                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2815                 goto drop_unlock;
2816         }
2817
2818         if (!priv->interface_id) {
2819                 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2820                 goto drop_unlock;
2821         }
2822
2823         if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2824                 IWL_ERROR("ERROR: No TX rate available.\n");
2825                 goto drop_unlock;
2826         }
2827
2828         unicast = !is_multicast_ether_addr(hdr->addr1);
2829         id = 0;
2830
2831         fc = le16_to_cpu(hdr->frame_control);
2832
2833 #ifdef CONFIG_IWLWIFI_DEBUG
2834         if (ieee80211_is_auth(fc))
2835                 IWL_DEBUG_TX("Sending AUTH frame\n");
2836         else if (ieee80211_is_assoc_request(fc))
2837                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2838         else if (ieee80211_is_reassoc_request(fc))
2839                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2840 #endif
2841
2842         if (!iwl_is_associated(priv) &&
2843             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2844                 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2845                 goto drop_unlock;
2846         }
2847
2848         spin_unlock_irqrestore(&priv->lock, flags);
2849
2850         hdr_len = ieee80211_get_hdrlen(fc);
2851         sta_id = iwl_get_sta_id(priv, hdr);
2852         if (sta_id == IWL_INVALID_STATION) {
2853                 DECLARE_MAC_BUF(mac);
2854
2855                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2856                                print_mac(mac, hdr->addr1));
2857                 goto drop;
2858         }
2859
2860         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2861
2862         qc = ieee80211_get_qos_ctrl(hdr);
2863         if (qc) {
2864                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2865                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2866                                 IEEE80211_SCTL_SEQ;
2867                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2868                         (hdr->seq_ctrl &
2869                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2870                 seq_number += 0x10;
2871 #ifdef CONFIG_IWLWIFI_HT
2872 #ifdef CONFIG_IWLWIFI_HT_AGG
2873                 /* aggregation is on for this <sta,tid> */
2874                 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2875                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2876 #endif /* CONFIG_IWLWIFI_HT_AGG */
2877 #endif /* CONFIG_IWLWIFI_HT */
2878         }
2879         txq = &priv->txq[txq_id];
2880         q = &txq->q;
2881
2882         spin_lock_irqsave(&priv->lock, flags);
2883
2884         tfd = &txq->bd[q->first_empty];
2885         memset(tfd, 0, sizeof(*tfd));
2886         control_flags = (u32 *) tfd;
2887         idx = get_cmd_index(q, q->first_empty, 0);
2888
2889         memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info));
2890         txq->txb[q->first_empty].skb[0] = skb;
2891         memcpy(&(txq->txb[q->first_empty].status.control),
2892                ctl, sizeof(struct ieee80211_tx_control));
2893         out_cmd = &txq->cmd[idx];
2894         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2895         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2896         out_cmd->hdr.cmd = REPLY_TX;
2897         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2898                                 INDEX_TO_SEQ(q->first_empty)));
2899         /* copy frags header */
2900         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2901
2902         /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2903         len = priv->hw_setting.tx_cmd_len +
2904                 sizeof(struct iwl_cmd_header) + hdr_len;
2905
2906         len_org = len;
2907         len = (len + 3) & ~3;
2908
2909         if (len_org != len)
2910                 len_org = 1;
2911         else
2912                 len_org = 0;
2913
2914         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2915                      offsetof(struct iwl_cmd, hdr);
2916
2917         iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2918
2919         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2920                 iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2921
2922         /* 802.11 null functions have no payload... */
2923         len = skb->len - hdr_len;
2924         if (len) {
2925                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2926                                            len, PCI_DMA_TODEVICE);
2927                 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2928         }
2929
2930         if (len_org)
2931                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2932
2933         len = (u16)skb->len;
2934         out_cmd->cmd.tx.len = cpu_to_le16(len);
2935
2936         /* TODO need this for burst mode later on */
2937         iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2938
2939         /* set is_hcca to 0; it probably will never be implemented */
2940         iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2941
2942         iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
2943                        hdr, hdr_len, ctl, NULL);
2944
2945         if (!ieee80211_get_morefrag(hdr)) {
2946                 txq->need_update = 1;
2947                 if (qc) {
2948                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2949                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2950                 }
2951         } else {
2952                 wait_write_ptr = 1;
2953                 txq->need_update = 0;
2954         }
2955
2956         iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2957                            sizeof(out_cmd->cmd.tx));
2958
2959         iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2960                            ieee80211_get_hdrlen(fc));
2961
2962         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2963
2964         q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
2965         rc = iwl_tx_queue_update_write_ptr(priv, txq);
2966         spin_unlock_irqrestore(&priv->lock, flags);
2967
2968         if (rc)
2969                 return rc;
2970
2971         if ((iwl_queue_space(q) < q->high_mark)
2972             && priv->mac80211_registered) {
2973                 if (wait_write_ptr) {
2974                         spin_lock_irqsave(&priv->lock, flags);
2975                         txq->need_update = 1;
2976                         iwl_tx_queue_update_write_ptr(priv, txq);
2977                         spin_unlock_irqrestore(&priv->lock, flags);
2978                 }
2979
2980                 ieee80211_stop_queue(priv->hw, ctl->queue);
2981         }
2982
2983         return 0;
2984
2985 drop_unlock:
2986         spin_unlock_irqrestore(&priv->lock, flags);
2987 drop:
2988         return -1;
2989 }
2990
2991 static void iwl_set_rate(struct iwl_priv *priv)
2992 {
2993         const struct ieee80211_hw_mode *hw = NULL;
2994         struct ieee80211_rate *rate;
2995         int i;
2996
2997         hw = iwl_get_hw_mode(priv, priv->phymode);
2998
2999         priv->active_rate = 0;
3000         priv->active_rate_basic = 0;
3001
3002         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3003                        hw->mode == MODE_IEEE80211A ?
3004                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3005
3006         for (i = 0; i < hw->num_rates; i++) {
3007                 rate = &(hw->rates[i]);
3008                 if ((rate->val < IWL_RATE_COUNT) &&
3009                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3010                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3011                                        rate->val, iwl_rates[rate->val].plcp,
3012                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3013                                        "*" : "");
3014                         priv->active_rate |= (1 << rate->val);
3015                         if (rate->flags & IEEE80211_RATE_BASIC)
3016                                 priv->active_rate_basic |= (1 << rate->val);
3017                 } else
3018                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3019                                        rate->val, iwl_rates[rate->val].plcp);
3020         }
3021
3022         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3023                        priv->active_rate, priv->active_rate_basic);
3024
3025         /*
3026          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3027          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3028          * OFDM
3029          */
3030         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3031                 priv->staging_rxon.cck_basic_rates =
3032                     ((priv->active_rate_basic &
3033                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3034         else
3035                 priv->staging_rxon.cck_basic_rates =
3036                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3037
3038         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3039                 priv->staging_rxon.ofdm_basic_rates =
3040                     ((priv->active_rate_basic &
3041                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3042                       IWL_FIRST_OFDM_RATE) & 0xFF;
3043         else
3044                 priv->staging_rxon.ofdm_basic_rates =
3045                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3046 }
3047
3048 static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
3049 {
3050         unsigned long flags;
3051
3052         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3053                 return;
3054
3055         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3056                           disable_radio ? "OFF" : "ON");
3057
3058         if (disable_radio) {
3059                 iwl_scan_cancel(priv);
3060                 /* FIXME: This is a workaround for AP */
3061                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3062                         spin_lock_irqsave(&priv->lock, flags);
3063                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3064                                     CSR_UCODE_SW_BIT_RFKILL);
3065                         spin_unlock_irqrestore(&priv->lock, flags);
3066                         iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3067                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3068                 }
3069                 return;
3070         }
3071
3072         spin_lock_irqsave(&priv->lock, flags);
3073         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3074
3075         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3076         spin_unlock_irqrestore(&priv->lock, flags);
3077
3078         /* wake up ucode */
3079         msleep(10);
3080
3081         spin_lock_irqsave(&priv->lock, flags);
3082         iwl_read32(priv, CSR_UCODE_DRV_GP1);
3083         if (!iwl_grab_restricted_access(priv))
3084                 iwl_release_restricted_access(priv);
3085         spin_unlock_irqrestore(&priv->lock, flags);
3086
3087         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3088                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3089                                   "disabled by HW switch\n");
3090                 return;
3091         }
3092
3093         queue_work(priv->workqueue, &priv->restart);
3094         return;
3095 }
3096
3097 void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
3098                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3099 {
3100         u16 fc =
3101             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3102
3103         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3104                 return;
3105
3106         if (!(fc & IEEE80211_FCTL_PROTECTED))
3107                 return;
3108
3109         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3110         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3111         case RX_RES_STATUS_SEC_TYPE_TKIP:
3112                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3113                     RX_RES_STATUS_BAD_ICV_MIC)
3114                         stats->flag |= RX_FLAG_MMIC_ERROR;
3115         case RX_RES_STATUS_SEC_TYPE_WEP:
3116         case RX_RES_STATUS_SEC_TYPE_CCMP:
3117                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3118                     RX_RES_STATUS_DECRYPT_OK) {
3119                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3120                         stats->flag |= RX_FLAG_DECRYPTED;
3121                 }
3122                 break;
3123
3124         default:
3125                 break;
3126         }
3127 }
3128
3129 void iwl_handle_data_packet_monitor(struct iwl_priv *priv,
3130                                     struct iwl_rx_mem_buffer *rxb,
3131                                     void *data, short len,
3132                                     struct ieee80211_rx_status *stats,
3133                                     u16 phy_flags)
3134 {
3135         struct iwl_rt_rx_hdr *iwl_rt;
3136
3137         /* First cache any information we need before we overwrite
3138          * the information provided in the skb from the hardware */