err.no Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl4965-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/ieee80211_radiotap.h>
  45 #include <net/mac80211.h>
  46
  47 #include <asm/div64.h>
  48
  49 #include "iwl-4965.h"
  50 #include "iwl-helpers.h"
  51
  52 #ifdef CONFIG_IWL4965_DEBUG
  53 u32 iwl4965_debug_level;
  54 #endif
  55
  56 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
  57                                   struct iwl4965_tx_queue *txq);
  58
  59 /******************************************************************************
  60  *
  61  * module boiler plate
  62  *
  63  ******************************************************************************/
  64
  65 /* module parameters */
  66 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
  67 static int iwl4965_param_debug;    /* def: 0 = minimal debug log messages */
  68 static int iwl4965_param_disable;  /* def: enable radio */
  69 static int iwl4965_param_antenna;  /* def: 0 = both antennas (use diversity) */
  70 int iwl4965_param_hwcrypto;        /* def: using software encryption */
  71 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
  72 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
  73
  74 /*
  75  * module name, copyright, version, etc.
  76  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  77  */
  78
  79 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  80
  81 #ifdef CONFIG_IWL4965_DEBUG
  82 #define VD "d"
  83 #else
  84 #define VD
  85 #endif
  86
  87 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  88 #define VS "s"
  89 #else
  90 #define VS
  91 #endif
  92
  93 #define IWLWIFI_VERSION "1.1.19k" VD VS
  94 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
  95 #define DRV_VERSION     IWLWIFI_VERSION
  96
  97 /* Change firmware file name, using "-" and incrementing number,
  98  *   *only* when uCode interface or architecture changes so that it
  99  *   is not compatible with earlier drivers.
 100  * This number will also appear in << 8 position of 1st dword of uCode file */
 101 #define IWL4965_UCODE_API "-1"
 102
 103 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 104 MODULE_VERSION(DRV_VERSION);
 105 MODULE_AUTHOR(DRV_COPYRIGHT);
 106 MODULE_LICENSE("GPL");
 107
 108 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
 109 {
 110         u16 fc = le16_to_cpu(hdr->frame_control);
 111         int hdr_len = ieee80211_get_hdrlen(fc);
 112
 113         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 114                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 115         return NULL;
 116 }
 117
 118 static const struct ieee80211_hw_mode *iwl4965_get_hw_mode(
 119                 struct iwl4965_priv *priv, int mode)
 120 {
 121         int i;
 122
 123         for (i = 0; i < 3; i++)
 124                 if (priv->modes[i].mode == mode)
 125                         return &priv->modes[i];
 126
 127         return NULL;
 128 }
 129
 130 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 131 {
 132         /* Single white space is for Linksys APs */
 133         if (essid_len == 1 && essid[0] == ' ')
 134                 return 1;
 135
 136         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 137         while (essid_len) {
 138                 essid_len--;
 139                 if (essid[essid_len] != '\0')
 140                         return 0;
 141         }
 142
 143         return 1;
 144 }
 145
 146 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 147 {
 148         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 149         const char *s = essid;
 150         char *d = escaped;
 151
 152         if (iwl4965_is_empty_essid(essid, essid_len)) {
 153                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 154                 return escaped;
 155         }
 156
 157         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 158         while (essid_len--) {
 159                 if (*s == '\0') {
 160                         *d++ = '\\';
 161                         *d++ = '0';
 162                         s++;
 163                 } else
 164                         *d++ = *s++;
 165         }
 166         *d = '\0';
 167         return escaped;
 168 }
 169
 170 static void iwl4965_print_hex_dump(int level, void *p, u32 len)
 171 {
 172 #ifdef CONFIG_IWL4965_DEBUG
 173         if (!(iwl4965_debug_level & level))
 174                 return;
 175
 176         print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
 177                         p, len, 1);
 178 #endif
 179 }
 180
 181 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 182  * DMA services
 183  *
 184  * Theory of operation
 185  *
 186  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 187  * of buffer descriptors, each of which points to one or more data buffers for
 188  * the device to read from or fill.  Driver and device exchange status of each
 189  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 190  * entries in each circular buffer, to protect against confusing empty and full
 191  * queue states.
 192  *
 193  * The device reads or writes the data in the queues via the device's several
 194  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 195  *
 196  * For Tx queue, there are low mark and high mark limits. If, after queuing
 197  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 198  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 199  * Tx queue resumed.
 200  *
 201  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 202  * queue (#4) for sending commands to the device firmware, and 15 other
 203  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 204  *
 205  * See more detailed info in iwl-4965-hw.h.
 206  ***************************************************/
 207
 208 static int iwl4965_queue_space(const struct iwl4965_queue *q)
 209 {
 210         int s = q->read_ptr - q->write_ptr;
 211
 212         if (q->read_ptr > q->write_ptr)
 213                 s -= q->n_bd;
 214
 215         if (s <= 0)
 216                 s += q->n_window;
 217         /* keep some reserve to not confuse empty and full situations */
 218         s -= 2;
 219         if (s < 0)
 220                 s = 0;
 221         return s;
 222 }
 223
 224 /**
 225  * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
 226  * @index -- current index
 227  * @n_bd -- total number of entries in queue (must be power of 2)
 228  */
 229 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
 230 {
 231         return ++index & (n_bd - 1);
 232 }
 233
 234 /**
 235  * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
 236  * @index -- current index
 237  * @n_bd -- total number of entries in queue (must be power of 2)
 238  */
 239 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
 240 {
 241         return --index & (n_bd - 1);
 242 }
 243
 244 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 245 {
 246         return q->write_ptr > q->read_ptr ?
 247                 (i >= q->read_ptr && i < q->write_ptr) :
 248                 !(i < q->read_ptr && i >= q->write_ptr);
 249 }
 250
 251 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 252 {
 253         /* This is for scan command, the big buffer at end of command array */
 254         if (is_huge)
 255                 return q->n_window;     /* must be power of 2 */
 256
 257         /* Otherwise, use normal size buffers */
 258         return index & (q->n_window - 1);
 259 }
 260
 261 /**
 262  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 263  */
 264 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
 265                           int count, int slots_num, u32 id)
 266 {
 267         q->n_bd = count;
 268         q->n_window = slots_num;
 269         q->id = id;
 270
 271         /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
 272          * and iwl4965_queue_dec_wrap are broken. */
 273         BUG_ON(!is_power_of_2(count));
 274
 275         /* slots_num must be power-of-two size, otherwise
 276          * get_cmd_index is broken. */
 277         BUG_ON(!is_power_of_2(slots_num));
 278
 279         q->low_mark = q->n_window / 4;
 280         if (q->low_mark < 4)
 281                 q->low_mark = 4;
 282
 283         q->high_mark = q->n_window / 8;
 284         if (q->high_mark < 2)
 285                 q->high_mark = 2;
 286
 287         q->write_ptr = q->read_ptr = 0;
 288
 289         return 0;
 290 }
 291
 292 /**
 293  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 294  */
 295 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
 296                               struct iwl4965_tx_queue *txq, u32 id)
 297 {
 298         struct pci_dev *dev = priv->pci_dev;
 299
 300         /* Driver private data, only for Tx (not command) queues,
 301          * not shared with device. */
 302         if (id != IWL_CMD_QUEUE_NUM) {
 303                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 304                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 305                 if (!txq->txb) {
 306                         IWL_ERROR("kmalloc for auxiliary BD "
 307                                   "structures failed\n");
 308                         goto error;
 309                 }
 310         } else
 311                 txq->txb = NULL;
 312
 313         /* Circular buffer of transmit frame descriptors (TFDs),
 314          * shared with device */
 315         txq->bd = pci_alloc_consistent(dev,
 316                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 317                         &txq->q.dma_addr);
 318
 319         if (!txq->bd) {
 320                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 321                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 322                 goto error;
 323         }
 324         txq->q.id = id;
 325
 326         return 0;
 327
 328  error:
 329         if (txq->txb) {
 330                 kfree(txq->txb);
 331                 txq->txb = NULL;
 332         }
 333
 334         return -ENOMEM;
 335 }
 336
 337 /**
 338  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 339  */
 340 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
 341                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 342 {
 343         struct pci_dev *dev = priv->pci_dev;
 344         int len;
 345         int rc = 0;
 346
 347         /*
 348          * Alloc buffer array for commands (Tx or other types of commands).
 349          * For the command queue (#4), allocate command space + one big
 350          * command for scan, since scan command is very huge; the system will
 351          * not have two scans at the same time, so only one is needed.
 352          * For data Tx queues (all other queues), no super-size command
 353          * space is needed.
 354          */
 355         len = sizeof(struct iwl4965_cmd) * slots_num;
 356         if (txq_id == IWL_CMD_QUEUE_NUM)
 357                 len +=  IWL_MAX_SCAN_SIZE;
 358         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 359         if (!txq->cmd)
 360                 return -ENOMEM;
 361
 362         /* Alloc driver data array and TFD circular buffer */
 363         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 364         if (rc) {
 365                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 366
 367                 return -ENOMEM;
 368         }
 369         txq->need_update = 0;
 370
 371         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 372          * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
 373         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 374
 375         /* Initialize queue's high/low-water marks, and head/tail indexes */
 376         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 377
 378         /* Tell device where to find queue */
 379         iwl4965_hw_tx_queue_init(priv, txq);
 380
 381         return 0;
 382 }
 383
 384 /**
 385  * iwl4965_tx_queue_free - Deallocate DMA queue.
 386  * @txq: Transmit queue to deallocate.
 387  *
 388  * Empty queue by removing and destroying all BD's.
 389  * Free all buffers.
 390  * 0-fill, but do not free "txq" descriptor structure.
 391  */
 392 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
 393 {
 394         struct iwl4965_queue *q = &txq->q;
 395         struct pci_dev *dev = priv->pci_dev;
 396         int len;
 397
 398         if (q->n_bd == 0)
 399                 return;
 400
 401         /* first, empty all BD's */
 402         for (; q->write_ptr != q->read_ptr;
 403              q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
 404                 iwl4965_hw_txq_free_tfd(priv, txq);
 405
 406         len = sizeof(struct iwl4965_cmd) * q->n_window;
 407         if (q->id == IWL_CMD_QUEUE_NUM)
 408                 len += IWL_MAX_SCAN_SIZE;
 409
 410         /* De-alloc array of command/tx buffers */
 411         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 412
 413         /* De-alloc circular buffer of TFDs */
 414         if (txq->q.n_bd)
 415                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 416                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 417
 418         /* De-alloc array of per-TFD driver data */
 419         if (txq->txb) {
 420                 kfree(txq->txb);
 421                 txq->txb = NULL;
 422         }
 423
 424         /* 0-fill queue descriptor structure */
 425         memset(txq, 0, sizeof(*txq));
 426 }
 427
 428 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 429
 430 /*************** STATION TABLE MANAGEMENT ****
 431  * mac80211 should be examined to determine if sta_info is duplicating
 432  * the functionality provided here
 433  */
 434
 435 /**************************************************************/
 436
 437 #if 0 /* temporary disable till we add real remove station */
 438 /**
 439  * iwl4965_remove_station - Remove driver's knowledge of station.
 440  *
 441  * NOTE:  This does not remove station from device's station table.
 442  */
 443 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
 444 {
 445         int index = IWL_INVALID_STATION;
 446         int i;
 447         unsigned long flags;
 448
 449         spin_lock_irqsave(&priv->sta_lock, flags);
 450
 451         if (is_ap)
 452                 index = IWL_AP_ID;
 453         else if (is_broadcast_ether_addr(addr))
 454                 index = priv->hw_setting.bcast_sta_id;
 455         else
 456                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 457                         if (priv->stations[i].used &&
 458                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 459                                                 addr)) {
 460                                 index = i;
 461                                 break;
 462                         }
 463
 464         if (unlikely(index == IWL_INVALID_STATION))
 465                 goto out;
 466
 467         if (priv->stations[index].used) {
 468                 priv->stations[index].used = 0;
 469                 priv->num_stations--;
 470         }
 471
 472         BUG_ON(priv->num_stations < 0);
 473
 474 out:
 475         spin_unlock_irqrestore(&priv->sta_lock, flags);
 476         return 0;
 477 }
 478 #endif
 479
 480 /**
 481  * iwl4965_clear_stations_table - Clear the driver's station table
 482  *
 483  * NOTE:  This does not clear or otherwise alter the device's station table.
 484  */
 485 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
 486 {
 487         unsigned long flags;
 488
 489         spin_lock_irqsave(&priv->sta_lock, flags);
 490
 491         priv->num_stations = 0;
 492         memset(priv->stations, 0, sizeof(priv->stations));
 493
 494         spin_unlock_irqrestore(&priv->sta_lock, flags);
 495 }
 496
 497 /**
 498  * iwl4965_add_station_flags - Add station to tables in driver and device
 499  */
 500 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr, int is_ap, u8 flags)
 501 {
 502         int i;
 503         int index = IWL_INVALID_STATION;
 504         struct iwl4965_station_entry *station;
 505         unsigned long flags_spin;
 506         DECLARE_MAC_BUF(mac);
 507
 508         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 509         if (is_ap)
 510                 index = IWL_AP_ID;
 511         else if (is_broadcast_ether_addr(addr))
 512                 index = priv->hw_setting.bcast_sta_id;
 513         else
 514                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 515                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 516                                                 addr)) {
 517                                 index = i;
 518                                 break;
 519                         }
 520
 521                         if (!priv->stations[i].used &&
 522                             index == IWL_INVALID_STATION)
 523                                 index = i;
 524                 }
 525
 526
 527         /* These two conditions have the same outcome, but keep them separate
 528           since they have different meanings */
 529         if (unlikely(index == IWL_INVALID_STATION)) {
 530                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 531                 return index;
 532         }
 533
 534         if (priv->stations[index].used &&
 535             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 536                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 537                 return index;
 538         }
 539
 540
 541         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 542         station = &priv->stations[index];
 543         station->used = 1;
 544         priv->num_stations++;
 545
 546         /* Set up the REPLY_ADD_STA command to send to device */
 547         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 548         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 549         station->sta.mode = 0;
 550         station->sta.sta.sta_id = index;
 551         station->sta.station_flags = 0;
 552
 553 #ifdef CONFIG_IWL4965_HT
 554         /* BCAST station and IBSS stations do not work in HT mode */
 555         if (index != priv->hw_setting.bcast_sta_id &&
 556             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 557                 iwl4965_set_ht_add_station(priv, index);
 558 #endif /*CONFIG_IWL4965_HT*/
 559
 560         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 561
 562         /* Add station to device's station table */
 563         iwl4965_send_add_station(priv, &station->sta, flags);
 564         return index;
 565
 566 }
 567
 568 /*************** DRIVER STATUS FUNCTIONS   *****/
 569
 570 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
 571 {
 572         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 573          * set but EXIT_PENDING is not */
 574         return test_bit(STATUS_READY, &priv->status) &&
 575                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 576                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 577 }
 578
 579 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
 580 {
 581         return test_bit(STATUS_ALIVE, &priv->status);
 582 }
 583
 584 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
 585 {
 586         return test_bit(STATUS_INIT, &priv->status);
 587 }
 588
 589 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
 590 {
 591         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 592                test_bit(STATUS_RF_KILL_SW, &priv->status);
 593 }
 594
 595 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
 596 {
 597
 598         if (iwl4965_is_rfkill(priv))
 599                 return 0;
 600
 601         return iwl4965_is_ready(priv);
 602 }
 603
 604 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 605
 606 #define IWL_CMD(x) case x : return #x
 607
 608 static const char *get_cmd_string(u8 cmd)
 609 {
 610         switch (cmd) {
 611                 IWL_CMD(REPLY_ALIVE);
 612                 IWL_CMD(REPLY_ERROR);
 613                 IWL_CMD(REPLY_RXON);
 614                 IWL_CMD(REPLY_RXON_ASSOC);
 615                 IWL_CMD(REPLY_QOS_PARAM);
 616                 IWL_CMD(REPLY_RXON_TIMING);
 617                 IWL_CMD(REPLY_ADD_STA);
 618                 IWL_CMD(REPLY_REMOVE_STA);
 619                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 620                 IWL_CMD(REPLY_TX);
 621                 IWL_CMD(REPLY_RATE_SCALE);
 622                 IWL_CMD(REPLY_LEDS_CMD);
 623                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 624                 IWL_CMD(RADAR_NOTIFICATION);
 625                 IWL_CMD(REPLY_QUIET_CMD);
 626                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 627                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 628                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 629                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 630                 IWL_CMD(POWER_TABLE_CMD);
 631                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 632                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 633                 IWL_CMD(REPLY_SCAN_CMD);
 634                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 635                 IWL_CMD(SCAN_START_NOTIFICATION);
 636                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 637                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 638                 IWL_CMD(BEACON_NOTIFICATION);
 639                 IWL_CMD(REPLY_TX_BEACON);
 640                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 641                 IWL_CMD(QUIET_NOTIFICATION);
 642                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 643                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 644                 IWL_CMD(REPLY_BT_CONFIG);
 645                 IWL_CMD(REPLY_STATISTICS_CMD);
 646                 IWL_CMD(STATISTICS_NOTIFICATION);
 647                 IWL_CMD(REPLY_CARD_STATE_CMD);
 648                 IWL_CMD(CARD_STATE_NOTIFICATION);
 649                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 650                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
 651                 IWL_CMD(SENSITIVITY_CMD);
 652                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
 653                 IWL_CMD(REPLY_RX_PHY_CMD);
 654                 IWL_CMD(REPLY_RX_MPDU_CMD);
 655                 IWL_CMD(REPLY_4965_RX);
 656                 IWL_CMD(REPLY_COMPRESSED_BA);
 657         default:
 658                 return "UNKNOWN";
 659
 660         }
 661 }
 662
 663 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 664
 665 /**
 666  * iwl4965_enqueue_hcmd - enqueue a uCode command
 667  * @priv: device private data point
 668  * @cmd: a point to the ucode command structure
 669  *
 670  * The function returns < 0 values to indicate the operation is
 671  * failed. On success, it turns the index (> 0) of command in the
 672  * command queue.
 673  */
 674 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 675 {
 676         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 677         struct iwl4965_queue *q = &txq->q;
 678         struct iwl4965_tfd_frame *tfd;
 679         u32 *control_flags;
 680         struct iwl4965_cmd *out_cmd;
 681         u32 idx;
 682         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 683         dma_addr_t phys_addr;
 684         int ret;
 685         unsigned long flags;
 686
 687         /* If any of the command structures end up being larger than
 688          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 689          * we will need to increase the size of the TFD entries */
 690         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 691                !(cmd->meta.flags & CMD_SIZE_HUGE));
 692
 693         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 694                 IWL_ERROR("No space for Tx\n");
 695                 return -ENOSPC;
 696         }
 697
 698         spin_lock_irqsave(&priv->hcmd_lock, flags);
 699
 700         tfd = &txq->bd[q->write_ptr];
 701         memset(tfd, 0, sizeof(*tfd));
 702
 703         control_flags = (u32 *) tfd;
 704
 705         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 706         out_cmd = &txq->cmd[idx];
 707
 708         out_cmd->hdr.cmd = cmd->id;
 709         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 710         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 711
 712         /* At this point, the out_cmd now has all of the incoming cmd
 713          * information */
 714
 715         out_cmd->hdr.flags = 0;
 716         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 717                         INDEX_TO_SEQ(q->write_ptr));
 718         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 719                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 720
 721         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 722                         offsetof(struct iwl4965_cmd, hdr);
 723         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 724
 725         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 726                      "%d bytes at %d[%d]:%d\n",
 727                      get_cmd_string(out_cmd->hdr.cmd),
 728                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 729                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 730
 731         txq->need_update = 1;
 732
 733         /* Set up entry in queue's byte count circular buffer */
 734         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 735
 736         /* Increment and update queue's write index */
 737         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
 738         iwl4965_tx_queue_update_write_ptr(priv, txq);
 739
 740         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 741         return ret ? ret : idx;
 742 }
 743
 744 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 745 {
 746         int ret;
 747
 748         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 749
 750         /* An asynchronous command can not expect an SKB to be set. */
 751         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 752
 753         /* An asynchronous command MUST have a callback. */
 754         BUG_ON(!cmd->meta.u.callback);
 755
 756         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 757                 return -EBUSY;
 758
 759         ret = iwl4965_enqueue_hcmd(priv, cmd);
 760         if (ret < 0) {
 761                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 762                           get_cmd_string(cmd->id), ret);
 763                 return ret;
 764         }
 765         return 0;
 766 }
 767
 768 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 769 {
 770         int cmd_idx;
 771         int ret;
 772         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 773
 774         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 775
 776          /* A synchronous command can not have a callback set. */
 777         BUG_ON(cmd->meta.u.callback != NULL);
 778
 779         if (atomic_xchg(&entry, 1)) {
 780                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 781                           get_cmd_string(cmd->id));
 782                 return -EBUSY;
 783         }
 784
 785         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 786
 787         if (cmd->meta.flags & CMD_WANT_SKB)
 788                 cmd->meta.source = &cmd->meta;
 789
 790         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
 791         if (cmd_idx < 0) {
 792                 ret = cmd_idx;
 793                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 794                           get_cmd_string(cmd->id), ret);
 795                 goto out;
 796         }
 797
 798         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 799                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 800                         HOST_COMPLETE_TIMEOUT);
 801         if (!ret) {
 802                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 803                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 804                                   get_cmd_string(cmd->id),
 805                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 806
 807                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 808                         ret = -ETIMEDOUT;
 809                         goto cancel;
 810                 }
 811         }
 812
 813         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 814                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 815                                get_cmd_string(cmd->id));
 816                 ret = -ECANCELED;
 817                 goto fail;
 818         }
 819         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 820                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 821                                get_cmd_string(cmd->id));
 822                 ret = -EIO;
 823                 goto fail;
 824         }
 825         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 826                 IWL_ERROR("Error: Response NULL in '%s'\n",
 827                           get_cmd_string(cmd->id));
 828                 ret = -EIO;
 829                 goto out;
 830         }
 831
 832         ret = 0;
 833         goto out;
 834
 835 cancel:
 836         if (cmd->meta.flags & CMD_WANT_SKB) {
 837                 struct iwl4965_cmd *qcmd;
 838
 839                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 840                  * TX cmd queue. Otherwise in case the cmd comes
 841                  * in later, it will possibly set an invalid
 842                  * address (cmd->meta.source). */
 843                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 844                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 845         }
 846 fail:
 847         if (cmd->meta.u.skb) {
 848                 dev_kfree_skb_any(cmd->meta.u.skb);
 849                 cmd->meta.u.skb = NULL;
 850         }
 851 out:
 852         atomic_set(&entry, 0);
 853         return ret;
 854 }
 855
 856 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 857 {
 858         if (cmd->meta.flags & CMD_ASYNC)
 859                 return iwl4965_send_cmd_async(priv, cmd);
 860
 861         return iwl4965_send_cmd_sync(priv, cmd);
 862 }
 863
 864 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
 865 {
 866         struct iwl4965_host_cmd cmd = {
 867                 .id = id,
 868                 .len = len,
 869                 .data = data,
 870         };
 871
 872         return iwl4965_send_cmd_sync(priv, &cmd);
 873 }
 874
 875 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
 876 {
 877         struct iwl4965_host_cmd cmd = {
 878                 .id = id,
 879                 .len = sizeof(val),
 880                 .data = &val,
 881         };
 882
 883         return iwl4965_send_cmd_sync(priv, &cmd);
 884 }
 885
 886 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
 887 {
 888         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 889 }
 890
 891 /**
 892  * iwl4965_rxon_add_station - add station into station table.
 893  *
 894  * there is only one AP station with id= IWL_AP_ID
 895  * NOTE: mutex must be held before calling this fnction
 896  */
 897 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
 898                                 const u8 *addr, int is_ap)
 899 {
 900         u8 sta_id;
 901
 902         /* Add station to device's station table */
 903         sta_id = iwl4965_add_station_flags(priv, addr, is_ap, 0);
 904
 905         /* Set up default rate scaling table in device's station table */
 906         iwl4965_add_station(priv, addr, is_ap);
 907
 908         return sta_id;
 909 }
 910
 911 /**
 912  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
 913  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 914  * @channel: Any channel valid for the requested phymode
 915
 916  * In addition to setting the staging RXON, priv->phymode is also set.
 917  *
 918  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 919  * in the staging RXON flag structure based on the phymode
 920  */
 921 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode,
 922                                  u16 channel)
 923 {
 924         if (!iwl4965_get_channel_info(priv, phymode, channel)) {
 925                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 926                                channel, phymode);
 927                 return -EINVAL;
 928         }
 929
 930         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 931             (priv->phymode == phymode))
 932                 return 0;
 933
 934         priv->staging_rxon.channel = cpu_to_le16(channel);
 935         if (phymode == MODE_IEEE80211A)
 936                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 937         else
 938                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 939
 940         priv->phymode = phymode;
 941
 942         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
 943
 944         return 0;
 945 }
 946
 947 /**
 948  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 949  *
 950  * NOTE:  This is really only useful during development and can eventually
 951  * be #ifdef'd out once the driver is stable and folks aren't actively
 952  * making changes
 953  */
 954 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 955 {
 956         int error = 0;
 957         int counter = 1;
 958
 959         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 960                 error |= le32_to_cpu(rxon->flags &
 961                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 962                                  RXON_FLG_RADAR_DETECT_MSK));
 963                 if (error)
 964                         IWL_WARNING("check 24G fields %d | %d\n",
 965                                     counter++, error);
 966         } else {
 967                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 968                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 969                 if (error)
 970                         IWL_WARNING("check 52 fields %d | %d\n",
 971                                     counter++, error);
 972                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 973                 if (error)
 974                         IWL_WARNING("check 52 CCK %d | %d\n",
 975                                     counter++, error);
 976         }
 977         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 978         if (error)
 979                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 980
 981         /* make sure basic rates 6Mbps and 1Mbps are supported */
 982         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 983                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 984         if (error)
 985                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 986
 987         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 988         if (error)
 989                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 990
 991         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 992                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 993         if (error)
 994                 IWL_WARNING("check CCK and short slot %d | %d\n",
 995                             counter++, error);
 996
 997         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 998                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 999         if (error)
1000                 IWL_WARNING("check CCK & auto detect %d | %d\n",
1001                             counter++, error);
1002
1003         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1004                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1005         if (error)
1006                 IWL_WARNING("check TGG and auto detect %d | %d\n",
1007                             counter++, error);
1008
1009         if (error)
1010                 IWL_WARNING("Tuning to channel %d\n",
1011                             le16_to_cpu(rxon->channel));
1012
1013         if (error) {
1014                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1015                 return -1;
1016         }
1017         return 0;
1018 }
1019
1020 /**
1021  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1022  * @priv: staging_rxon is compared to active_rxon
1023  *
1024  * If the RXON structure is changing enough to require a new tune,
1025  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1026  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1027  */
1028 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1029 {
1030
1031         /* These items are only settable from the full RXON command */
1032         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1033             compare_ether_addr(priv->staging_rxon.bssid_addr,
1034                                priv->active_rxon.bssid_addr) ||
1035             compare_ether_addr(priv->staging_rxon.node_addr,
1036                                priv->active_rxon.node_addr) ||
1037             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1038                                priv->active_rxon.wlap_bssid_addr) ||
1039             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1040             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1041             (priv->staging_rxon.air_propagation !=
1042              priv->active_rxon.air_propagation) ||
1043             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1044              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1045             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1046              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1047             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1048             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1049                 return 1;
1050
1051         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1052          * be updated with the RXON_ASSOC command -- however only some
1053          * flag transitions are allowed using RXON_ASSOC */
1054
1055         /* Check if we are not switching bands */
1056         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1057             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1058                 return 1;
1059
1060         /* Check if we are switching association toggle */
1061         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1062                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1063                 return 1;
1064
1065         return 0;
1066 }
1067
1068 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1069 {
1070         int rc = 0;
1071         struct iwl4965_rx_packet *res = NULL;
1072         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1073         struct iwl4965_host_cmd cmd = {
1074                 .id = REPLY_RXON_ASSOC,
1075                 .len = sizeof(rxon_assoc),
1076                 .meta.flags = CMD_WANT_SKB,
1077                 .data = &rxon_assoc,
1078         };
1079         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1080         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1081
1082         if ((rxon1->flags == rxon2->flags) &&
1083             (rxon1->filter_flags == rxon2->filter_flags) &&
1084             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1085             (rxon1->ofdm_ht_single_stream_basic_rates ==
1086              rxon2->ofdm_ht_single_stream_basic_rates) &&
1087             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1088              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1089             (rxon1->rx_chain == rxon2->rx_chain) &&
1090             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1091                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1092                 return 0;
1093         }
1094
1095         rxon_assoc.flags = priv->staging_rxon.flags;
1096         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1097         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1098         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1099         rxon_assoc.reserved = 0;
1100         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1101             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1102         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1103             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1104         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1105
1106         rc = iwl4965_send_cmd_sync(priv, &cmd);
1107         if (rc)
1108                 return rc;
1109
1110         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1111         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1112                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1113                 rc = -EIO;
1114         }
1115
1116         priv->alloc_rxb_skb--;
1117         dev_kfree_skb_any(cmd.meta.u.skb);
1118
1119         return rc;
1120 }
1121
1122 /**
1123  * iwl4965_commit_rxon - commit staging_rxon to hardware
1124  *
1125  * The RXON command in staging_rxon is committed to the hardware and
1126  * the active_rxon structure is updated with the new data.  This
1127  * function correctly transitions out of the RXON_ASSOC_MSK state if
1128  * a HW tune is required based on the RXON structure changes.
1129  */
1130 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1131 {
1132         /* cast away the const for active_rxon in this function */
1133         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1134         DECLARE_MAC_BUF(mac);
1135         int rc = 0;
1136
1137         if (!iwl4965_is_alive(priv))
1138                 return -1;
1139
1140         /* always get timestamp with Rx frame */
1141         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1142
1143         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1144         if (rc) {
1145                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1146                 return -EINVAL;
1147         }
1148
1149         /* If we don't need to send a full RXON, we can use
1150          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1151          * and other flags for the current radio configuration. */
1152         if (!iwl4965_full_rxon_required(priv)) {
1153                 rc = iwl4965_send_rxon_assoc(priv);
1154                 if (rc) {
1155                         IWL_ERROR("Error setting RXON_ASSOC "
1156                                   "configuration (%d).\n", rc);
1157                         return rc;
1158                 }
1159
1160                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1161
1162                 return 0;
1163         }
1164
1165         /* station table will be cleared */
1166         priv->assoc_station_added = 0;
1167
1168 #ifdef CONFIG_IWL4965_SENSITIVITY
1169         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1170         if (!priv->error_recovering)
1171                 priv->start_calib = 0;
1172
1173         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1174 #endif /* CONFIG_IWL4965_SENSITIVITY */
1175
1176         /* If we are currently associated and the new config requires
1177          * an RXON_ASSOC and the new config wants the associated mask enabled,
1178          * we must clear the associated from the active configuration
1179          * before we apply the new config */
1180         if (iwl4965_is_associated(priv) &&
1181             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1182                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1183                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1184
1185                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1186                                       sizeof(struct iwl4965_rxon_cmd),
1187                                       &priv->active_rxon);
1188
1189                 /* If the mask clearing failed then we set
1190                  * active_rxon back to what it was previously */
1191                 if (rc) {
1192                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1193                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1194                                   "configuration (%d).\n", rc);
1195                         return rc;
1196                 }
1197         }
1198
1199         IWL_DEBUG_INFO("Sending RXON\n"
1200                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1201                        "* channel = %d\n"
1202                        "* bssid = %s\n",
1203                        ((priv->staging_rxon.filter_flags &
1204                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1205                        le16_to_cpu(priv->staging_rxon.channel),
1206                        print_mac(mac, priv->staging_rxon.bssid_addr));
1207
1208         /* Apply the new configuration */
1209         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1210                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1211         if (rc) {
1212                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1213                 return rc;
1214         }
1215
1216         iwl4965_clear_stations_table(priv);
1217
1218 #ifdef CONFIG_IWL4965_SENSITIVITY
1219         if (!priv->error_recovering)
1220                 priv->start_calib = 0;
1221
1222         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1223         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1224 #endif /* CONFIG_IWL4965_SENSITIVITY */
1225
1226         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1227
1228         /* If we issue a new RXON command which required a tune then we must
1229          * send a new TXPOWER command or we won't be able to Tx any frames */
1230         rc = iwl4965_hw_reg_send_txpower(priv);
1231         if (rc) {
1232                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1233                 return rc;
1234         }
1235
1236         /* Add the broadcast address so we can send broadcast frames */
1237         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1238             IWL_INVALID_STATION) {
1239                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1240                 return -EIO;
1241         }
1242
1243         /* If we have set the ASSOC_MSK and we are in BSS mode then
1244          * add the IWL_AP_ID to the station rate table */
1245         if (iwl4965_is_associated(priv) &&
1246             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1247                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1248                     == IWL_INVALID_STATION) {
1249                         IWL_ERROR("Error adding AP address for transmit.\n");
1250                         return -EIO;
1251                 }
1252                 priv->assoc_station_added = 1;
1253         }
1254
1255         return 0;
1256 }
1257
1258 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1259 {
1260         struct iwl4965_bt_cmd bt_cmd = {
1261                 .flags = 3,
1262                 .lead_time = 0xAA,
1263                 .max_kill = 1,
1264                 .kill_ack_mask = 0,
1265                 .kill_cts_mask = 0,
1266         };
1267
1268         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1269                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1270 }
1271
1272 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1273 {
1274         int rc = 0;
1275         struct iwl4965_rx_packet *res;
1276         struct iwl4965_host_cmd cmd = {
1277                 .id = REPLY_SCAN_ABORT_CMD,
1278                 .meta.flags = CMD_WANT_SKB,
1279         };
1280
1281         /* If there isn't a scan actively going on in the hardware
1282          * then we are in between scan bands and not actually
1283          * actively scanning, so don't send the abort command */
1284         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1285                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1286                 return 0;
1287         }
1288
1289         rc = iwl4965_send_cmd_sync(priv, &cmd);
1290         if (rc) {
1291                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1292                 return rc;
1293         }
1294
1295         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1296         if (res->u.status != CAN_ABORT_STATUS) {
1297                 /* The scan abort will return 1 for success or
1298                  * 2 for "failure".  A failure condition can be
1299                  * due to simply not being in an active scan which
1300                  * can occur if we send the scan abort before we
1301                  * the microcode has notified us that a scan is
1302                  * completed. */
1303                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1304                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1305                 clear_bit(STATUS_SCAN_HW, &priv->status);
1306         }
1307
1308         dev_kfree_skb_any(cmd.meta.u.skb);
1309
1310         return rc;
1311 }
1312
1313 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1314                                         struct iwl4965_cmd *cmd,
1315                                         struct sk_buff *skb)
1316 {
1317         return 1;
1318 }
1319
1320 /*
1321  * CARD_STATE_CMD
1322  *
1323  * Use: Sets the device's internal card state to enable, disable, or halt
1324  *
1325  * When in the 'enable' state the card operates as normal.
1326  * When in the 'disable' state, the card enters into a low power mode.
1327  * When in the 'halt' state, the card is shut down and must be fully
1328  * restarted to come back on.
1329  */
1330 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1331 {
1332         struct iwl4965_host_cmd cmd = {
1333                 .id = REPLY_CARD_STATE_CMD,
1334                 .len = sizeof(u32),
1335                 .data = &flags,
1336                 .meta.flags = meta_flag,
1337         };
1338
1339         if (meta_flag & CMD_ASYNC)
1340                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1341
1342         return iwl4965_send_cmd(priv, &cmd);
1343 }
1344
1345 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1346                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1347 {
1348         struct iwl4965_rx_packet *res = NULL;
1349
1350         if (!skb) {
1351                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1352                 return 1;
1353         }
1354
1355         res = (struct iwl4965_rx_packet *)skb->data;
1356         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1357                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1358                           res->hdr.flags);
1359                 return 1;
1360         }
1361
1362         switch (res->u.add_sta.status) {
1363         case ADD_STA_SUCCESS_MSK:
1364                 break;
1365         default:
1366                 break;
1367         }
1368
1369         /* We didn't cache the SKB; let the caller free it */
1370         return 1;
1371 }
1372
1373 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1374                          struct iwl4965_addsta_cmd *sta, u8 flags)
1375 {
1376         struct iwl4965_rx_packet *res = NULL;
1377         int rc = 0;
1378         struct iwl4965_host_cmd cmd = {
1379                 .id = REPLY_ADD_STA,
1380                 .len = sizeof(struct iwl4965_addsta_cmd),
1381                 .meta.flags = flags,
1382                 .data = sta,
1383         };
1384
1385         if (flags & CMD_ASYNC)
1386                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1387         else
1388                 cmd.meta.flags |= CMD_WANT_SKB;
1389
1390         rc = iwl4965_send_cmd(priv, &cmd);
1391
1392         if (rc || (flags & CMD_ASYNC))
1393                 return rc;
1394
1395         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1396         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1397                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1398                           res->hdr.flags);
1399                 rc = -EIO;
1400         }
1401
1402         if (rc == 0) {
1403                 switch (res->u.add_sta.status) {
1404                 case ADD_STA_SUCCESS_MSK:
1405                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1406                         break;
1407                 default:
1408                         rc = -EIO;
1409                         IWL_WARNING("REPLY_ADD_STA failed\n");
1410                         break;
1411                 }
1412         }
1413
1414         priv->alloc_rxb_skb--;
1415         dev_kfree_skb_any(cmd.meta.u.skb);
1416
1417         return rc;
1418 }
1419
1420 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1421                                    struct ieee80211_key_conf *keyconf,
1422                                    u8 sta_id)
1423 {
1424         unsigned long flags;
1425         __le16 key_flags = 0;
1426
1427         switch (keyconf->alg) {
1428         case ALG_CCMP:
1429                 key_flags |= STA_KEY_FLG_CCMP;
1430                 key_flags |= cpu_to_le16(
1431                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1432                 key_flags &= ~STA_KEY_FLG_INVALID;
1433                 break;
1434         case ALG_TKIP:
1435         case ALG_WEP:
1436         default:
1437                 return -EINVAL;
1438         }
1439         spin_lock_irqsave(&priv->sta_lock, flags);
1440         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1441         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1442         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1443                keyconf->keylen);
1444
1445         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1446                keyconf->keylen);
1447         priv->stations[sta_id].sta.key.key_flags = key_flags;
1448         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1449         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1450
1451         spin_unlock_irqrestore(&priv->sta_lock, flags);
1452
1453         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1454         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1455         return 0;
1456 }
1457
1458 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1459 {
1460         unsigned long flags;
1461
1462         spin_lock_irqsave(&priv->sta_lock, flags);
1463         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1464         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1465         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1466         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1467         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1468         spin_unlock_irqrestore(&priv->sta_lock, flags);
1469
1470         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1471         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1472         return 0;
1473 }
1474
1475 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1476 {
1477         struct list_head *element;
1478
1479         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1480                        priv->frames_count);
1481
1482         while (!list_empty(&priv->free_frames)) {
1483                 element = priv->free_frames.next;
1484                 list_del(element);
1485                 kfree(list_entry(element, struct iwl4965_frame, list));
1486                 priv->frames_count--;
1487         }
1488
1489         if (priv->frames_count) {
1490                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1491                             priv->frames_count);
1492                 priv->frames_count = 0;
1493         }
1494 }
1495
1496 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1497 {
1498         struct iwl4965_frame *frame;
1499         struct list_head *element;
1500         if (list_empty(&priv->free_frames)) {
1501                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1502                 if (!frame) {
1503                         IWL_ERROR("Could not allocate frame!\n");
1504                         return NULL;
1505                 }
1506
1507                 priv->frames_count++;
1508                 return frame;
1509         }
1510
1511         element = priv->free_frames.next;
1512         list_del(element);
1513         return list_entry(element, struct iwl4965_frame, list);
1514 }
1515
1516 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1517 {
1518         memset(frame, 0, sizeof(*frame));
1519         list_add(&frame->list, &priv->free_frames);
1520 }
1521
1522 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1523                                 struct ieee80211_hdr *hdr,
1524                                 const u8 *dest, int left)
1525 {
1526
1527         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1528             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1529              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1530                 return 0;
1531
1532         if (priv->ibss_beacon->len > left)
1533                 return 0;
1534
1535         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1536
1537         return priv->ibss_beacon->len;
1538 }
1539
1540 int iwl4965_rate_index_from_plcp(int plcp)
1541 {
1542         int i = 0;
1543
1544         /* 4965 HT rate format */
1545         if (plcp & RATE_MCS_HT_MSK) {
1546                 i = (plcp & 0xff);
1547
1548                 if (i >= IWL_RATE_MIMO_6M_PLCP)
1549                         i = i - IWL_RATE_MIMO_6M_PLCP;
1550
1551                 i += IWL_FIRST_OFDM_RATE;
1552                 /* skip 9M not supported in ht*/
1553                 if (i >= IWL_RATE_9M_INDEX)
1554                         i += 1;
1555                 if ((i >= IWL_FIRST_OFDM_RATE) &&
1556                     (i <= IWL_LAST_OFDM_RATE))
1557                         return i;
1558
1559         /* 4965 legacy rate format, search for match in table */
1560         } else {
1561                 for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1562                         if (iwl4965_rates[i].plcp == (plcp &0xFF))
1563                                 return i;
1564         }
1565         return -1;
1566 }
1567
1568 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1569 {
1570         u8 i;
1571
1572         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1573              i = iwl4965_rates[i].next_ieee) {
1574                 if (rate_mask & (1 << i))
1575                         return iwl4965_rates[i].plcp;
1576         }
1577
1578         return IWL_RATE_INVALID;
1579 }
1580
1581 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1582 {
1583         struct iwl4965_frame *frame;
1584         unsigned int frame_size;
1585         int rc;
1586         u8 rate;
1587
1588         frame = iwl4965_get_free_frame(priv);
1589
1590         if (!frame) {
1591                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1592                           "command.\n");
1593                 return -ENOMEM;
1594         }
1595
1596         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1597                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1598                                                 0xFF0);
1599                 if (rate == IWL_INVALID_RATE)
1600                         rate = IWL_RATE_6M_PLCP;
1601         } else {
1602                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1603                 if (rate == IWL_INVALID_RATE)
1604                         rate = IWL_RATE_1M_PLCP;
1605         }
1606
1607         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1608
1609         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1610                               &frame->u.cmd[0]);
1611
1612         iwl4965_free_frame(priv, frame);
1613
1614         return rc;
1615 }
1616
1617 /******************************************************************************
1618  *
1619  * EEPROM related functions
1620  *
1621  ******************************************************************************/
1622
1623 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1624 {
1625         memcpy(mac, priv->eeprom.mac_address, 6);
1626 }
1627
1628 /**
1629  * iwl4965_eeprom_init - read EEPROM contents
1630  *
1631  * Load the EEPROM contents from adapter into priv->eeprom
1632  *
1633  * NOTE:  This routine uses the non-debug IO access functions.
1634  */
1635 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1636 {
1637         u16 *e = (u16 *)&priv->eeprom;
1638         u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1639         u32 r;
1640         int sz = sizeof(priv->eeprom);
1641         int rc;
1642         int i;
1643         u16 addr;
1644
1645         /* The EEPROM structure has several padding buffers within it
1646          * and when adding new EEPROM maps is subject to programmer errors
1647          * which may be very difficult to identify without explicitly
1648          * checking the resulting size of the eeprom map. */
1649         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1650
1651         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1652                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1653                 return -ENOENT;
1654         }
1655
1656         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1657         rc = iwl4965_eeprom_acquire_semaphore(priv);
1658         if (rc < 0) {
1659                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1660                 return -ENOENT;
1661         }
1662
1663         /* eeprom is an array of 16bit values */
1664         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1665                 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1666                 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1667
1668                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1669                                         i += IWL_EEPROM_ACCESS_DELAY) {
1670                         r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1671                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1672                                 break;
1673                         udelay(IWL_EEPROM_ACCESS_DELAY);
1674                 }
1675
1676                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1677                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1678                         rc = -ETIMEDOUT;
1679                         goto done;
1680                 }
1681                 e[addr / 2] = le16_to_cpu(r >> 16);
1682         }
1683         rc = 0;
1684
1685 done:
1686         iwl4965_eeprom_release_semaphore(priv);
1687         return rc;
1688 }
1689
1690 /******************************************************************************
1691  *
1692  * Misc. internal state and helper functions
1693  *
1694  ******************************************************************************/
1695 #ifdef CONFIG_IWL4965_DEBUG
1696
1697 /**
1698  * iwl4965_report_frame - dump frame to syslog during debug sessions
1699  *
1700  * You may hack this function to show different aspects of received frames,
1701  * including selective frame dumps.
1702  * group100 parameter selects whether to show 1 out of 100 good frames.
1703  *
1704  * TODO:  This was originally written for 3945, need to audit for
1705  *        proper operation with 4965.
1706  */
1707 void iwl4965_report_frame(struct iwl4965_priv *priv,
1708                       struct iwl4965_rx_packet *pkt,
1709                       struct ieee80211_hdr *header, int group100)
1710 {
1711         u32 to_us;
1712         u32 print_summary = 0;
1713         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1714         u32 hundred = 0;
1715         u32 dataframe = 0;
1716         u16 fc;
1717         u16 seq_ctl;
1718         u16 channel;
1719         u16 phy_flags;
1720         int rate_sym;
1721         u16 length;
1722         u16 status;
1723         u16 bcn_tmr;
1724         u32 tsf_low;
1725         u64 tsf;
1726         u8 rssi;
1727         u8 agc;
1728         u16 sig_avg;
1729         u16 noise_diff;
1730         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1731         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1732         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1733         u8 *data = IWL_RX_DATA(pkt);
1734
1735         /* MAC header */
1736         fc = le16_to_cpu(header->frame_control);
1737         seq_ctl = le16_to_cpu(header->seq_ctrl);
1738
1739         /* metadata */
1740         channel = le16_to_cpu(rx_hdr->channel);
1741         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1742         rate_sym = rx_hdr->rate;
1743         length = le16_to_cpu(rx_hdr->len);
1744
1745         /* end-of-frame status and timestamp */
1746         status = le32_to_cpu(rx_end->status);
1747         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1748         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1749         tsf = le64_to_cpu(rx_end->timestamp);
1750
1751         /* signal statistics */
1752         rssi = rx_stats->rssi;
1753         agc = rx_stats->agc;
1754         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1755         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1756
1757         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1758
1759         /* if data frame is to us and all is good,
1760          *   (optionally) print summary for only 1 out of every 100 */
1761         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1762             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1763                 dataframe = 1;
1764                 if (!group100)
1765                         print_summary = 1;      /* print each frame */
1766                 else if (priv->framecnt_to_us < 100) {
1767                         priv->framecnt_to_us++;
1768                         print_summary = 0;
1769                 } else {
1770                         priv->framecnt_to_us = 0;
1771                         print_summary = 1;
1772                         hundred = 1;
1773                 }
1774         } else {
1775                 /* print summary for all other frames */
1776                 print_summary = 1;
1777         }
1778
1779         if (print_summary) {
1780                 char *title;
1781                 u32 rate;
1782
1783                 if (hundred)
1784                         title = "100Frames";
1785                 else if (fc & IEEE80211_FCTL_RETRY)
1786                         title = "Retry";
1787                 else if (ieee80211_is_assoc_response(fc))
1788                         title = "AscRsp";
1789                 else if (ieee80211_is_reassoc_response(fc))
1790                         title = "RasRsp";
1791                 else if (ieee80211_is_probe_response(fc)) {
1792                         title = "PrbRsp";
1793                         print_dump = 1; /* dump frame contents */
1794                 } else if (ieee80211_is_beacon(fc)) {
1795                         title = "Beacon";
1796                         print_dump = 1; /* dump frame contents */
1797                 } else if (ieee80211_is_atim(fc))
1798                         title = "ATIM";
1799                 else if (ieee80211_is_auth(fc))
1800                         title = "Auth";
1801                 else if (ieee80211_is_deauth(fc))
1802                         title = "DeAuth";
1803                 else if (ieee80211_is_disassoc(fc))
1804                         title = "DisAssoc";
1805                 else
1806                         title = "Frame";
1807
1808                 rate = iwl4965_rate_index_from_plcp(rate_sym);
1809                 if (rate == -1)
1810                         rate = 0;
1811                 else
1812                         rate = iwl4965_rates[rate].ieee / 2;
1813
1814                 /* print frame summary.
1815                  * MAC addresses show just the last byte (for brevity),
1816                  *    but you can hack it to show more, if you'd like to. */
1817                 if (dataframe)
1818                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1819                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1820                                      title, fc, header->addr1[5],
1821                                      length, rssi, channel, rate);
1822                 else {
1823                         /* src/dst addresses assume managed mode */
1824                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1825                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1826                                      "phy=0x%02x, chnl=%d\n",
1827                                      title, fc, header->addr1[5],
1828                                      header->addr3[5], rssi,
1829                                      tsf_low - priv->scan_start_tsf,
1830                                      phy_flags, channel);
1831                 }
1832         }
1833         if (print_dump)
1834                 iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1835 }
1836 #endif
1837
1838 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1839 {
1840         if (priv->hw_setting.shared_virt)
1841                 pci_free_consistent(priv->pci_dev,
1842                                     sizeof(struct iwl4965_shared),
1843                                     priv->hw_setting.shared_virt,
1844                                     priv->hw_setting.shared_phys);
1845 }
1846
1847 /**
1848  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1849  *
1850  * return : set the bit for each supported rate insert in ie
1851  */
1852 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1853                                     u16 basic_rate, int *left)
1854 {
1855         u16 ret_rates = 0, bit;
1856         int i;
1857         u8 *cnt = ie;
1858         u8 *rates = ie + 1;
1859
1860         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1861                 if (bit & supported_rate) {
1862                         ret_rates |= bit;
1863                         rates[*cnt] = iwl4965_rates[i].ieee |
1864                                 ((bit & basic_rate) ? 0x80 : 0x00);
1865                         (*cnt)++;
1866                         (*left)--;
1867                         if ((*left <= 0) ||
1868                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1869                                 break;
1870                 }
1871         }
1872
1873         return ret_rates;
1874 }
1875
1876 #ifdef CONFIG_IWL4965_HT
1877 void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1878                              struct ieee80211_ht_capability *ht_cap,
1879                              u8 use_wide_chan);
1880 #endif
1881
1882 /**
1883  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1884  */
1885 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1886                               struct ieee80211_mgmt *frame,
1887                               int left, int is_direct)
1888 {
1889         int len = 0;
1890         u8 *pos = NULL;
1891         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1892
1893         /* Make sure there is enough space for the probe request,
1894          * two mandatory IEs and the data */
1895         left -= 24;
1896         if (left < 0)
1897                 return 0;
1898         len += 24;
1899
1900         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1901         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1902         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1903         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1904         frame->seq_ctrl = 0;
1905
1906         /* fill in our indirect SSID IE */
1907         /* ...next IE... */
1908
1909         left -= 2;
1910         if (left < 0)
1911                 return 0;
1912         len += 2;
1913         pos = &(frame->u.probe_req.variable[0]);
1914         *pos++ = WLAN_EID_SSID;
1915         *pos++ = 0;
1916
1917         /* fill in our direct SSID IE... */
1918         if (is_direct) {
1919                 /* ...next IE... */
1920                 left -= 2 + priv->essid_len;
1921                 if (left < 0)
1922                         return 0;
1923                 /* ... fill it in... */
1924                 *pos++ = WLAN_EID_SSID;
1925                 *pos++ = priv->essid_len;
1926                 memcpy(pos, priv->essid, priv->essid_len);
1927                 pos += priv->essid_len;
1928                 len += 2 + priv->essid_len;
1929         }
1930
1931         /* fill in supported rate */
1932         /* ...next IE... */
1933         left -= 2;
1934         if (left < 0)
1935                 return 0;
1936
1937         /* ... fill it in... */
1938         *pos++ = WLAN_EID_SUPP_RATES;
1939         *pos = 0;
1940
1941         /* exclude 60M rate */
1942         active_rates = priv->rates_mask;
1943         active_rates &= ~IWL_RATE_60M_MASK;
1944
1945         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1946
1947         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1948         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1949                         active_rate_basic, &left);
1950         active_rates &= ~ret_rates;
1951
1952         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1953                                  active_rate_basic, &left);
1954         active_rates &= ~ret_rates;
1955
1956         len += 2 + *pos;
1957         pos += (*pos) + 1;
1958         if (active_rates == 0)
1959                 goto fill_end;
1960
1961         /* fill in supported extended rate */
1962         /* ...next IE... */
1963         left -= 2;
1964         if (left < 0)
1965                 return 0;
1966         /* ... fill it in... */
1967         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1968         *pos = 0;
1969         iwl4965_supported_rate_to_ie(pos, active_rates,
1970                                  active_rate_basic, &left);
1971         if (*pos > 0)
1972                 len += 2 + *pos;
1973
1974 #ifdef CONFIG_IWL4965_HT
1975         if (is_direct && priv->is_ht_enabled) {
1976                 u8 use_wide_chan = 1;
1977
1978                 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1979                         use_wide_chan = 0;
1980                 pos += (*pos) + 1;
1981                 *pos++ = WLAN_EID_HT_CAPABILITY;
1982                 *pos++ = sizeof(struct ieee80211_ht_capability);
1983                 iwl4965_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1984                                  use_wide_chan);
1985                 len += 2 + sizeof(struct ieee80211_ht_capability);
1986         }
1987 #endif  /*CONFIG_IWL4965_HT */
1988
1989  fill_end:
1990         return (u16)len;
1991 }
1992
1993 /*
1994  * QoS  support
1995 */
1996 #ifdef CONFIG_IWL4965_QOS
1997 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1998                                        struct iwl4965_qosparam_cmd *qos)
1999 {
2000
2001         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
2002                                 sizeof(struct iwl4965_qosparam_cmd), qos);
2003 }
2004
2005 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
2006 {
2007         u16 cw_min = 15;
2008         u16 cw_max = 1023;
2009         u8 aifs = 2;
2010         u8 is_legacy = 0;
2011         unsigned long flags;
2012         int i;
2013
2014         spin_lock_irqsave(&priv->lock, flags);
2015         priv->qos_data.qos_active = 0;
2016
2017         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
2018                 if (priv->qos_data.qos_enable)
2019                         priv->qos_data.qos_active = 1;
2020                 if (!(priv->active_rate & 0xfff0)) {
2021                         cw_min = 31;
2022                         is_legacy = 1;
2023                 }
2024         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2025                 if (priv->qos_data.qos_enable)
2026                         priv->qos_data.qos_active = 1;
2027         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
2028                 cw_min = 31;
2029                 is_legacy = 1;
2030         }
2031
2032         if (priv->qos_data.qos_active)
2033                 aifs = 3;
2034
2035         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
2036         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
2037         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
2038         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
2039         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
2040
2041         if (priv->qos_data.qos_active) {
2042                 i = 1;
2043                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
2044                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
2045                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
2046                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2047                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2048
2049                 i = 2;
2050                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2051                         cpu_to_le16((cw_min + 1) / 2 - 1);
2052                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2053                         cpu_to_le16(cw_max);
2054                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2055                 if (is_legacy)
2056                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2057                                 cpu_to_le16(6016);
2058                 else
2059                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2060                                 cpu_to_le16(3008);
2061                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2062
2063                 i = 3;
2064                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2065                         cpu_to_le16((cw_min + 1) / 4 - 1);
2066                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2067                         cpu_to_le16((cw_max + 1) / 2 - 1);
2068                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2069                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2070                 if (is_legacy)
2071                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2072                                 cpu_to_le16(3264);
2073                 else
2074                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2075                                 cpu_to_le16(1504);
2076         } else {
2077                 for (i = 1; i < 4; i++) {
2078                         priv->qos_data.def_qos_parm.ac[i].cw_min =
2079                                 cpu_to_le16(cw_min);
2080                         priv->qos_data.def_qos_parm.ac[i].cw_max =
2081                                 cpu_to_le16(cw_max);
2082                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2083                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2084                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2085                 }
2086         }
2087         IWL_DEBUG_QOS("set QoS to default \n");
2088
2089         spin_unlock_irqrestore(&priv->lock, flags);
2090 }
2091
2092 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2093 {
2094         unsigned long flags;
2095
2096         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2097                 return;
2098
2099         if (!priv->qos_data.qos_enable)
2100                 return;
2101
2102         spin_lock_irqsave(&priv->lock, flags);
2103         priv->qos_data.def_qos_parm.qos_flags = 0;
2104
2105         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2106             !priv->qos_data.qos_cap.q_AP.txop_request)
2107                 priv->qos_data.def_qos_parm.qos_flags |=
2108                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2109         if (priv->qos_data.qos_active)
2110                 priv->qos_data.def_qos_parm.qos_flags |=
2111                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2112
2113 #ifdef CONFIG_IWL4965_HT
2114         if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
2115                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2116 #endif /* CONFIG_IWL4965_HT */
2117
2118         spin_unlock_irqrestore(&priv->lock, flags);
2119
2120         if (force || iwl4965_is_associated(priv)) {
2121                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2122                                 priv->qos_data.qos_active,
2123                                 priv->qos_data.def_qos_parm.qos_flags);
2124
2125                 iwl4965_send_qos_params_command(priv,
2126                                 &(priv->qos_data.def_qos_parm));
2127         }
2128 }
2129
2130 #endif /* CONFIG_IWL4965_QOS */
2131 /*
2132  * Power management (not Tx power!) functions
2133  */
2134 #define MSEC_TO_USEC 1024
2135
2136 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2137 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2138 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2139 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2140                                      __constant_cpu_to_le32(X1), \
2141                                      __constant_cpu_to_le32(X2), \
2142                                      __constant_cpu_to_le32(X3), \
2143                                      __constant_cpu_to_le32(X4)}
2144
2145
2146 /* default power management (not Tx power) table values */
2147 /* for tim  0-10 */
2148 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2149         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2150         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2151         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2152         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2153         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2154         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2155 };
2156
2157 /* for tim > 10 */
2158 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2159         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2160         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2161                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2162         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2163                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2164         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2165                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2166         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2167         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2168                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2169 };
2170
2171 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2172 {
2173         int rc = 0, i;
2174         struct iwl4965_power_mgr *pow_data;
2175         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2176         u16 pci_pm;
2177
2178         IWL_DEBUG_POWER("Initialize power \n");
2179
2180         pow_data = &(priv->power_data);
2181
2182         memset(pow_data, 0, sizeof(*pow_data));
2183
2184         pow_data->active_index = IWL_POWER_RANGE_0;
2185         pow_data->dtim_val = 0xffff;
2186
2187         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2188         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2189
2190         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2191         if (rc != 0)
2192                 return 0;
2193         else {
2194                 struct iwl4965_powertable_cmd *cmd;
2195
2196                 IWL_DEBUG_POWER("adjust power command flags\n");
2197
2198                 for (i = 0; i < IWL_POWER_AC; i++) {
2199                         cmd = &pow_data->pwr_range_0[i].cmd;
2200
2201                         if (pci_pm & 0x1)
2202                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2203                         else
2204                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2205                 }
2206         }
2207         return rc;
2208 }
2209
2210 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2211                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
2212 {
2213         int rc = 0, i;
2214         u8 skip;
2215         u32 max_sleep = 0;
2216         struct iwl4965_power_vec_entry *range;
2217         u8 period = 0;
2218         struct iwl4965_power_mgr *pow_data;
2219
2220         if (mode > IWL_POWER_INDEX_5) {
2221                 IWL_DEBUG_POWER("Error invalid power mode \n");
2222                 return -1;
2223         }
2224         pow_data = &(priv->power_data);
2225
2226         if (pow_data->active_index == IWL_POWER_RANGE_0)
2227                 range = &pow_data->pwr_range_0[0];
2228         else
2229                 range = &pow_data->pwr_range_1[1];
2230
2231         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2232
2233 #ifdef IWL_MAC80211_DISABLE
2234         if (priv->assoc_network != NULL) {
2235                 unsigned long flags;
2236
2237                 period = priv->assoc_network->tim.tim_period;
2238         }
2239 #endif  /*IWL_MAC80211_DISABLE */
2240         skip = range[mode].no_dtim;
2241
2242         if (period == 0) {
2243                 period = 1;
2244                 skip = 0;
2245         }
2246
2247         if (skip == 0) {
2248                 max_sleep = period;
2249                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2250         } else {
2251                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2252                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2253                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2254         }
2255
2256         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2257                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2258                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2259         }
2260
2261         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2262         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2263         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2264         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2265                         le32_to_cpu(cmd->sleep_interval[0]),
2266                         le32_to_cpu(cmd->sleep_interval[1]),
2267                         le32_to_cpu(cmd->sleep_interval[2]),
2268                         le32_to_cpu(cmd->sleep_interval[3]),
2269                         le32_to_cpu(cmd->sleep_interval[4]));
2270
2271         return rc;
2272 }
2273
2274 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2275 {
2276         u32 uninitialized_var(final_mode);
2277         int rc;
2278         struct iwl4965_powertable_cmd cmd;
2279
2280         /* If on battery, set to 3,
2281          * if plugged into AC power, set to CAM ("continuously aware mode"),
2282          * else user level */
2283         switch (mode) {
2284         case IWL_POWER_BATTERY:
2285                 final_mode = IWL_POWER_INDEX_3;
2286                 break;
2287         case IWL_POWER_AC:
2288                 final_mode = IWL_POWER_MODE_CAM;
2289                 break;
2290         default:
2291                 final_mode = mode;
2292                 break;
2293         }
2294
2295         cmd.keep_alive_beacons = 0;
2296
2297         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2298
2299         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2300
2301         if (final_mode == IWL_POWER_MODE_CAM)
2302                 clear_bit(STATUS_POWER_PMI, &priv->status);
2303         else
2304                 set_bit(STATUS_POWER_PMI, &priv->status);
2305
2306         return rc;
2307 }
2308
2309 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2310 {
2311         /* Filter incoming packets to determine if they are targeted toward
2312          * this network, discarding packets coming from ourselves */
2313         switch (priv->iw_mode) {
2314         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2315                 /* packets from our adapter are dropped (echo) */
2316                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2317                         return 0;
2318                 /* {broad,multi}cast packets to our IBSS go through */
2319                 if (is_multicast_ether_addr(header->addr1))
2320                         return !compare_ether_addr(header->addr3, priv->bssid);
2321                 /* packets to our adapter go through */
2322                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2323         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2324                 /* packets from our adapter are dropped (echo) */
2325                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2326                         return 0;
2327                 /* {broad,multi}cast packets to our BSS go through */
2328                 if (is_multicast_ether_addr(header->addr1))
2329                         return !compare_ether_addr(header->addr2, priv->bssid);
2330                 /* packets to our adapter go through */
2331                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2332         }
2333
2334         return 1;
2335 }
2336
2337 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2338
2339 static const char *iwl4965_get_tx_fail_reason(u32 status)
2340 {
2341         switch (status & TX_STATUS_MSK) {
2342         case TX_STATUS_SUCCESS:
2343                 return "SUCCESS";
2344                 TX_STATUS_ENTRY(SHORT_LIMIT);
2345                 TX_STATUS_ENTRY(LONG_LIMIT);
2346                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2347                 TX_STATUS_ENTRY(MGMNT_ABORT);
2348                 TX_STATUS_ENTRY(NEXT_FRAG);
2349                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2350                 TX_STATUS_ENTRY(DEST_PS);
2351                 TX_STATUS_ENTRY(ABORTED);
2352                 TX_STATUS_ENTRY(BT_RETRY);
2353                 TX_STATUS_ENTRY(STA_INVALID);
2354                 TX_STATUS_ENTRY(FRAG_DROPPED);
2355                 TX_STATUS_ENTRY(TID_DISABLE);
2356                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2357                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2358                 TX_STATUS_ENTRY(TX_LOCKED);
2359                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2360         }
2361
2362         return "UNKNOWN";
2363 }
2364
2365 /**
2366  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2367  *
2368  * NOTE: priv->mutex is not required before calling this function
2369  */
2370 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2371 {
2372         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2373                 clear_bit(STATUS_SCANNING, &priv->status);
2374                 return 0;
2375         }
2376
2377         if (test_bit(STATUS_SCANNING, &priv->status)) {
2378                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2379                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2380                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2381                         queue_work(priv->workqueue, &priv->abort_scan);
2382
2383                 } else
2384                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2385
2386                 return test_bit(STATUS_SCANNING, &priv->status);
2387         }
2388
2389         return 0;
2390 }
2391
2392 /**
2393  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2394  * @ms: amount of time to wait (in milliseconds) for scan to abort
2395  *
2396  * NOTE: priv->mutex must be held before calling this function
2397  */
2398 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2399 {
2400         unsigned long now = jiffies;
2401         int ret;
2402
2403         ret = iwl4965_scan_cancel(priv);
2404         if (ret && ms) {
2405                 mutex_unlock(&priv->mutex);
2406                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2407                                 test_bit(STATUS_SCANNING, &priv->status))
2408                         msleep(1);
2409                 mutex_lock(&priv->mutex);
2410
2411                 return test_bit(STATUS_SCANNING, &priv->status);
2412         }
2413
2414         return ret;
2415 }
2416
2417 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2418 {
2419         /* Reset ieee stats */
2420
2421         /* We don't reset the net_device_stats (ieee->stats) on
2422          * re-association */
2423
2424         priv->last_seq_num = -1;
2425         priv->last_frag_num = -1;
2426         priv->last_packet_time = 0;
2427
2428         iwl4965_scan_cancel(priv);
2429 }
2430
2431 #define MAX_UCODE_BEACON_INTERVAL       4096
2432 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2433
2434 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2435 {
2436         u16 new_val = 0;
2437         u16 beacon_factor = 0;
2438
2439         beacon_factor =
2440             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2441                 / MAX_UCODE_BEACON_INTERVAL;
2442         new_val = beacon_val / beacon_factor;
2443
2444         return cpu_to_le16(new_val);
2445 }
2446
2447 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2448 {
2449         u64 interval_tm_unit;
2450         u64 tsf, result;
2451         unsigned long flags;
2452         struct ieee80211_conf *conf = NULL;
2453         u16 beacon_int = 0;
2454
2455         conf = ieee80211_get_hw_conf(priv->hw);
2456
2457         spin_lock_irqsave(&priv->lock, flags);
2458         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2459         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2460
2461         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2462
2463         tsf = priv->timestamp1;
2464         tsf = ((tsf << 32) | priv->timestamp0);
2465
2466         beacon_int = priv->beacon_int;
2467         spin_unlock_irqrestore(&priv->lock, flags);
2468
2469         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2470                 if (beacon_int == 0) {
2471                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2472                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2473                 } else {
2474                         priv->rxon_timing.beacon_interval =
2475                                 cpu_to_le16(beacon_int);
2476                         priv->rxon_timing.beacon_interval =
2477                             iwl4965_adjust_beacon_interval(
2478                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2479                 }
2480
2481                 priv->rxon_timing.atim_window = 0;
2482         } else {
2483                 priv->rxon_timing.beacon_interval =
2484                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2485                 /* TODO: we need to get atim_window from upper stack
2486                  * for now we set to 0 */
2487                 priv->rxon_timing.atim_window = 0;
2488         }
2489
2490         interval_tm_unit =
2491                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2492         result = do_div(tsf, interval_tm_unit);
2493         priv->rxon_timing.beacon_init_val =
2494             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2495
2496         IWL_DEBUG_ASSOC
2497             ("beacon interval %d beacon timer %d beacon tim %d\n",
2498                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2499                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2500                 le16_to_cpu(priv->rxon_timing.atim_window));
2501 }
2502
2503 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2504 {
2505         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2506                 IWL_ERROR("APs don't scan.\n");
2507                 return 0;
2508         }
2509
2510         if (!iwl4965_is_ready_rf(priv)) {
2511                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2512                 return -EIO;
2513         }
2514
2515         if (test_bit(STATUS_SCANNING, &priv->status)) {
2516                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2517                 return -EAGAIN;
2518         }
2519
2520         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2521                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2522                                "Queuing.\n");
2523                 return -EAGAIN;
2524         }
2525
2526         IWL_DEBUG_INFO("Starting scan...\n");
2527         priv->scan_bands = 2;
2528         set_bit(STATUS_SCANNING, &priv->status);
2529         priv->scan_start = jiffies;
2530         priv->scan_pass_start = priv->scan_start;
2531
2532         queue_work(priv->workqueue, &priv->request_scan);
2533
2534         return 0;
2535 }
2536
2537 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2538 {
2539         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2540
2541         if (hw_decrypt)
2542                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2543         else
2544                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2545
2546         return 0;
2547 }
2548
2549 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2550 {
2551         if (phymode == MODE_IEEE80211A) {
2552                 priv->staging_rxon.flags &=
2553                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2554                       | RXON_FLG_CCK_MSK);
2555                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2556         } else {
2557                 /* Copied from iwl4965_bg_post_associate() */
2558                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2559                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2560                 else
2561                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2562
2563                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2564                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2565
2566                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2567                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2568                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2569         }
2570 }
2571
2572 /*
2573  * initialize rxon structure with default values from eeprom
2574  */
2575 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2576 {
2577         const struct iwl4965_channel_info *ch_info;
2578
2579         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2580
2581         switch (priv->iw_mode) {
2582         case IEEE80211_IF_TYPE_AP:
2583                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2584                 break;
2585
2586         case IEEE80211_IF_TYPE_STA:
2587                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2588                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2589                 break;
2590
2591         case IEEE80211_IF_TYPE_IBSS:
2592                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2593                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2594                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2595                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2596                 break;
2597
2598         case IEEE80211_IF_TYPE_MNTR:
2599                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2600                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2601                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2602                 break;
2603         }
2604
2605 #if 0
2606         /* TODO:  Figure out when short_preamble would be set and cache from
2607          * that */
2608         if (!hw_to_local(priv->hw)->short_preamble)
2609                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2610         else
2611                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2612 #endif
2613
2614         ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2615                                        le16_to_cpu(priv->staging_rxon.channel));
2616
2617         if (!ch_info)
2618                 ch_info = &priv->channel_info[0];
2619
2620         /*
2621          * in some case A channels are all non IBSS
2622          * in this case force B/G channel
2623          */
2624         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2625             !(is_channel_ibss(ch_info)))
2626                 ch_info = &priv->channel_info[0];
2627
2628         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2629         if (is_channel_a_band(ch_info))
2630                 priv->phymode = MODE_IEEE80211A;
2631         else
2632                 priv->phymode = MODE_IEEE80211G;
2633
2634         iwl4965_set_flags_for_phymode(priv, priv->phymode);
2635
2636         priv->staging_rxon.ofdm_basic_rates =
2637             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2638         priv->staging_rxon.cck_basic_rates =
2639             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2640
2641         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2642                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2643         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2644         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2645         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2646         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2647         iwl4965_set_rxon_chain(priv);
2648 }
2649
2650 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2651 {
2652         if (!iwl4965_is_ready_rf(priv))
2653                 return -EAGAIN;
2654
2655         if (mode == IEEE80211_IF_TYPE_IBSS) {
2656                 const struct iwl4965_channel_info *ch_info;
2657
2658                 ch_info = iwl4965_get_channel_info(priv,
2659                         priv->phymode,
2660                         le16_to_cpu(priv->staging_rxon.channel));
2661
2662                 if (!ch_info || !is_channel_ibss(ch_info)) {
2663                         IWL_ERROR("channel %d not IBSS channel\n",
2664                                   le16_to_cpu(priv->staging_rxon.channel));
2665                         return -EINVAL;
2666                 }
2667         }
2668
2669         cancel_delayed_work(&priv->scan_check);
2670         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2671                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2672                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2673                 return -EAGAIN;
2674         }
2675
2676         priv->iw_mode = mode;
2677
2678         iwl4965_connection_init_rx_config(priv);
2679         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2680
2681         iwl4965_clear_stations_table(priv);
2682
2683         iwl4965_commit_rxon(priv);
2684
2685         return 0;
2686 }
2687
2688 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2689                                       struct ieee80211_tx_control *ctl,
2690                                       struct iwl4965_cmd *cmd,
2691                                       struct sk_buff *skb_frag,
2692                                       int last_frag)
2693 {
2694         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2695
2696         switch (keyinfo->alg) {
2697         case ALG_CCMP:
2698                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2699                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2700                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2701                 break;
2702
2703         case ALG_TKIP:
2704 #if 0
2705                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2706
2707                 if (last_frag)
2708                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2709                                8);
2710                 else
2711                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2712 #endif
2713                 break;
2714
2715         case ALG_WEP:
2716                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2717                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2718
2719                 if (keyinfo->keylen == 13)
2720                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2721
2722                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2723
2724                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2725                              "with key %d\n", ctl->key_idx);
2726                 break;
2727
2728         default:
2729                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2730                 break;
2731         }
2732 }
2733
2734 /*
2735  * handle build REPLY_TX command notification.
2736  */
2737 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2738                                   struct iwl4965_cmd *cmd,
2739                                   struct ieee80211_tx_control *ctrl,
2740                                   struct ieee80211_hdr *hdr,
2741                                   int is_unicast, u8 std_id)
2742 {
2743         __le16 *qc;
2744         u16 fc = le16_to_cpu(hdr->frame_control);
2745         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2746
2747         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2748         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2749                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2750                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2751                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2752                 if (ieee80211_is_probe_response(fc) &&
2753                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2754                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2755         } else {
2756                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2757                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2758         }
2759
2760         cmd->cmd.tx.sta_id = std_id;
2761         if (ieee80211_get_morefrag(hdr))
2762                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2763
2764         qc = ieee80211_get_qos_ctrl(hdr);
2765         if (qc) {
2766                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2767                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2768         } else
2769                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2770
2771         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2772                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2773                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2774         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2775                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2776                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2777         }
2778
2779         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2780                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2781
2782         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2783         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2784                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2785                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2786                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2787                 else
2788                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2789         } else
2790                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2791
2792         cmd->cmd.tx.driver_txop = 0;
2793         cmd->cmd.tx.tx_flags = tx_flags;
2794         cmd->cmd.tx.next_frame_len = 0;
2795 }
2796
2797 /**
2798  * iwl4965_get_sta_id - Find station's index within station table
2799  *
2800  * If new IBSS station, create new entry in station table
2801  */
2802 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2803                                 struct ieee80211_hdr *hdr)
2804 {
2805         int sta_id;
2806         u16 fc = le16_to_cpu(hdr->frame_control);
2807         DECLARE_MAC_BUF(mac);
2808
2809         /* If this frame is broadcast or management, use broadcast station id */
2810         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2811             is_multicast_ether_addr(hdr->addr1))
2812                 return priv->hw_setting.bcast_sta_id;
2813
2814         switch (priv->iw_mode) {
2815
2816         /* If we are a client station in a BSS network, use the special
2817          * AP station entry (that's the only station we communicate with) */
2818         case IEEE80211_IF_TYPE_STA:
2819                 return IWL_AP_ID;
2820
2821         /* If we are an AP, then find the station, or use BCAST */
2822         case IEEE80211_IF_TYPE_AP:
2823                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2824                 if (sta_id != IWL_INVALID_STATION)
2825                         return sta_id;
2826                 return priv->hw_setting.bcast_sta_id;
2827
2828         /* If this frame is going out to an IBSS network, find the station,
2829          * or create a new station table entry */
2830         case IEEE80211_IF_TYPE_IBSS:
2831                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2832                 if (sta_id != IWL_INVALID_STATION)
2833                         return sta_id;
2834
2835                 /* Create new station table entry */
2836                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1, 0, CMD_ASYNC);
2837
2838                 if (sta_id != IWL_INVALID_STATION)
2839                         return sta_id;
2840
2841                 IWL_DEBUG_DROP("Station %s not in station map. "
2842                                "Defaulting to broadcast...\n",
2843                                print_mac(mac, hdr->addr1));
2844                 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2845                 return priv->hw_setting.bcast_sta_id;
2846
2847         default:
2848                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2849                 return priv->hw_setting.bcast_sta_id;
2850         }
2851 }
2852
2853 /*
2854  * start REPLY_TX command process
2855  */
2856 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2857                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2858 {
2859         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2860         struct iwl4965_tfd_frame *tfd;
2861         u32 *control_flags;
2862         int txq_id = ctl->queue;
2863         struct iwl4965_tx_queue *txq = NULL;
2864         struct iwl4965_queue *q = NULL;
2865         dma_addr_t phys_addr;
2866         dma_addr_t txcmd_phys;
2867         struct iwl4965_cmd *out_cmd = NULL;
2868         u16 len, idx, len_org;
2869         u8 id, hdr_len, unicast;
2870         u8 sta_id;
2871         u16 seq_number = 0;
2872         u16 fc;
2873         __le16 *qc;
2874         u8 wait_write_ptr = 0;
2875         unsigned long flags;
2876         int rc;
2877
2878         spin_lock_irqsave(&priv->lock, flags);
2879         if (iwl4965_is_rfkill(priv)) {
2880                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2881                 goto drop_unlock;
2882         }
2883
2884         if (!priv->interface_id) {
2885                 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2886                 goto drop_unlock;
2887         }
2888
2889         if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2890                 IWL_ERROR("ERROR: No TX rate available.\n");
2891                 goto drop_unlock;
2892         }
2893
2894         unicast = !is_multicast_ether_addr(hdr->addr1);
2895         id = 0;
2896
2897         fc = le16_to_cpu(hdr->frame_control);
2898
2899 #ifdef CONFIG_IWL4965_DEBUG
2900         if (ieee80211_is_auth(fc))
2901                 IWL_DEBUG_TX("Sending AUTH frame\n");
2902         else if (ieee80211_is_assoc_request(fc))
2903                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2904         else if (ieee80211_is_reassoc_request(fc))
2905                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2906 #endif
2907
2908         /* drop all data frame if we are not associated */
2909         if (!iwl4965_is_associated(priv) && !priv->assoc_id &&
2910             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2911                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2912                 goto drop_unlock;
2913         }
2914
2915         spin_unlock_irqrestore(&priv->lock, flags);
2916
2917         hdr_len = ieee80211_get_hdrlen(fc);
2918
2919         /* Find (or create) index into station table for destination station */
2920         sta_id = iwl4965_get_sta_id(priv, hdr);
2921         if (sta_id == IWL_INVALID_STATION) {
2922                 DECLARE_MAC_BUF(mac);
2923
2924                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2925                                print_mac(mac, hdr->addr1));
2926                 goto drop;
2927         }
2928
2929         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2930
2931         qc = ieee80211_get_qos_ctrl(hdr);
2932         if (qc) {
2933                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2934                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2935                                 IEEE80211_SCTL_SEQ;
2936                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2937                         (hdr->seq_ctrl &
2938                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2939                 seq_number += 0x10;
2940 #ifdef CONFIG_IWL4965_HT
2941 #ifdef CONFIG_IWL4965_HT_AGG
2942                 /* aggregation is on for this <sta,tid> */
2943                 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2944                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2945 #endif /* CONFIG_IWL4965_HT_AGG */
2946 #endif /* CONFIG_IWL4965_HT */
2947         }
2948
2949         /* Descriptor for chosen Tx queue */
2950         txq = &priv->txq[txq_id];
2951         q = &txq->q;
2952
2953         spin_lock_irqsave(&priv->lock, flags);
2954
2955         /* Set up first empty TFD within this queue's circular TFD buffer */
2956         tfd = &txq->bd[q->write_ptr];
2957         memset(tfd, 0, sizeof(*tfd));
2958         control_flags = (u32 *) tfd;
2959         idx = get_cmd_index(q, q->write_ptr, 0);
2960
2961         /* Set up driver data for this TFD */
2962         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2963         txq->txb[q->write_ptr].skb[0] = skb;
2964         memcpy(&(txq->txb[q->write_ptr].status.control),
2965                ctl, sizeof(struct ieee80211_tx_control));
2966
2967         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2968         out_cmd = &txq->cmd[idx];
2969         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2970         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2971
2972         /*
2973          * Set up the Tx-command (not MAC!) header.
2974          * Store the chosen Tx queue and TFD index within the sequence field;
2975          * after Tx, uCode's Tx response will return this value so driver can
2976          * locate the frame within the tx queue and do post-tx processing.
2977          */
2978         out_cmd->hdr.cmd = REPLY_TX;
2979         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2980                                 INDEX_TO_SEQ(q->write_ptr)));
2981
2982         /* Copy MAC header from skb into command buffer */
2983         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2984
2985         /*
2986          * Use the first empty entry in this queue's command buffer array
2987          * to contain the Tx command and MAC header concatenated together
2988          * (payload data will be in another buffer).
2989          * Size of this varies, due to varying MAC header length.
2990          * If end is not dword aligned, we'll have 2 extra bytes at the end
2991          * of the MAC header (device reads on dword boundaries).
2992          * We'll tell device about this padding later.
2993          */
2994         len = priv->hw_setting.tx_cmd_len +
2995                 sizeof(struct iwl4965_cmd_header) + hdr_len;
2996
2997         len_org = len;
2998         len = (len + 3) & ~3;
2999
3000         if (len_org != len)
3001                 len_org = 1;
3002         else
3003                 len_org = 0;
3004
3005         /* Physical address of this Tx command's header (not MAC header!),
3006          * within command buffer array. */
3007         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3008                      offsetof(struct iwl4965_cmd, hdr);
3009
3010         /* Add buffer containing Tx command and MAC(!) header to TFD's
3011          * first entry */
3012         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3013
3014         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
3015                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3016
3017         /* Set up TFD's 2nd entry to point directly to remainder of skb,
3018          * if any (802.11 null frames have no payload). */
3019         len = skb->len - hdr_len;
3020         if (len) {
3021                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3022                                            len, PCI_DMA_TODEVICE);
3023                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3024         }
3025
3026         /* Tell 4965 about any 2-byte padding after MAC header */
3027         if (len_org)
3028                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3029
3030         /* Total # bytes to be transmitted */
3031         len = (u16)skb->len;
3032         out_cmd->cmd.tx.len = cpu_to_le16(len);
3033
3034         /* TODO need this for burst mode later on */
3035         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3036
3037         /* set is_hcca to 0; it probably will never be implemented */
3038         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3039
3040         iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
3041                        hdr, hdr_len, ctl, NULL);
3042
3043         if (!ieee80211_get_morefrag(hdr)) {
3044                 txq->need_update = 1;
3045                 if (qc) {
3046                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3047                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
3048                 }
3049         } else {
3050                 wait_write_ptr = 1;
3051                 txq->need_update = 0;
3052         }
3053
3054         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3055                            sizeof(out_cmd->cmd.tx));
3056
3057         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3058                            ieee80211_get_hdrlen(fc));
3059
3060         /* Set up entry for this TFD in Tx byte-count array */
3061         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3062
3063         /* Tell device the write index *just past* this latest filled TFD */
3064         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3065         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3066         spin_unlock_irqrestore(&priv->lock, flags);
3067
3068         if (rc)
3069                 return rc;
3070
3071         if ((iwl4965_queue_space(q) < q->high_mark)
3072             && priv->mac80211_registered) {
3073                 if (wait_write_ptr) {
3074                         spin_lock_irqsave(&priv->lock, flags);
3075                         txq->need_update = 1;
3076                         iwl4965_tx_queue_update_write_ptr(priv, txq);
3077                         spin_unlock_irqrestore(&priv->lock, flags);
3078                 }
3079
3080                 ieee80211_stop_queue(priv->hw, ctl->queue);
3081         }
3082
3083         return 0;
3084
3085 drop_unlock:
3086         spin_unlock_irqrestore(&priv->lock, flags);
3087 drop:
3088         return -1;
3089 }
3090
3091 static void iwl4965_set_rate(struct iwl4965_priv *priv)
3092 {
3093         const struct ieee80211_hw_mode *hw = NULL;
3094         struct ieee80211_rate *rate;
3095         int i;
3096
3097         hw = iwl4965_get_hw_mode(priv, priv->phymode);
3098         if (!hw) {
3099                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3100                 return;
3101         }
3102
3103         priv->active_rate = 0;
3104         priv->active_rate_basic = 0;
3105
3106         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3107                        hw->mode == MODE_IEEE80211A ?
3108                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3109
3110         for (i = 0; i < hw->num_rates; i++) {
3111                 rate = &(hw->rates[i]);
3112                 if ((rate->val < IWL_RATE_COUNT) &&
3113                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3114                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3115                                        rate->val, iwl4965_rates[rate->val].plcp,
3116                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3117                                        "*" : "");
3118                         priv->active_rate |= (1 << rate->val);
3119                         if (rate->flags & IEEE80211_RATE_BASIC)
3120                                 priv->active_rate_basic |= (1 << rate->val);
3121                 } else
3122                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3123                                        rate->val, iwl4965_rates[rate->val].plcp);
3124         }
3125
3126         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3127                        priv->active_rate, priv->active_rate_basic);
3128
3129         /*
3130          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3131          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3132          * OFDM
3133          */
3134         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3135                 priv->staging_rxon.cck_basic_rates =
3136                     ((priv->active_rate_basic &
3137                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3138         else
3139                 priv->staging_rxon.cck_basic_rates =
3140                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3141
3142         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3143                 priv->staging_rxon.ofdm_basic_rates =
3144                     ((priv->active_rate_basic &
3145                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3146                       IWL_FIRST_OFDM_RATE) & 0xFF;
3147         else
3148                 priv->staging_rxon.ofdm_basic_rates =
3149                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3150 }
3151
3152 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3153 {
3154         unsigned long flags;
3155
3156         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3157                 return;
3158
3159         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3160                           disable_radio ? "OFF" : "ON");
3161
3162         if (disable_radio) {
3163                 iwl4965_scan_cancel(priv);
3164                 /* FIXME: This is a workaround for AP */
3165                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3166                         spin_lock_irqsave(&priv->lock, flags);
3167                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3168                                     CSR_UCODE_SW_BIT_RFKILL);
3169                         spin_unlock_irqrestore(&priv->lock, flags);
3170                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3171                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3172                 }
3173                 return;
3174         }
3175
3176         spin_lock_irqsave(&priv->lock, flags);
3177         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3178
3179         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3180         spin_unlock_irqrestore(&priv->lock, flags);
3181
3182         /* wake up ucode */
3183         msleep(10);
3184
3185         spin_lock_irqsave(&priv->lock, flags);
3186         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3187         if (!iwl4965_grab_nic_access(priv))
3188                 iwl4965_release_nic_access(priv);
3189         spin_unlock_irqrestore(&priv->lock, flags);
3190
3191         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3192                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3193                                   "disabled by HW switch\n");
3194                 return;
3195         }
3196
3197         queue_work(priv->workqueue, &priv->restart);
3198         return;
3199 }
3200
3201 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3202                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3203 {
3204         u16 fc =
3205             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3206
3207         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3208                 return;
3209
3210         if (!(fc & IEEE80211_FCTL_PROTECTED))
3211                 return;
3212
3213         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3214         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3215         case RX_RES_STATUS_SEC_TYPE_TKIP:
3216                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3217                     RX_RES_STATUS_BAD_ICV_MIC)
3218                         stats->flag |= RX_FLAG_MMIC_ERROR;
3219         case RX_RES_STATUS_SEC_TYPE_WEP:
3220         case RX_RES_STATUS_SEC_TYPE_CCMP:
3221                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3222                     RX_RES_STATUS_DECRYPT_OK) {
3223                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3224                         stats->flag |= RX_FLAG_DECRYPTED;
3225                 }
3226                 break;
3227
3228         default:
3229                 break;
3230         }
3231 }
3232
3233 void iwl4965_handle_data_packet_monitor(struct iwl4965_priv *priv,
3234                                     struct iwl4965_rx_mem_buffer *rxb,
3235                                     void *data, short len,
3236                                     struct ieee80211_rx_status *stats,
3237                                     u16 phy_flags)
3238 {
3239         struct iwl4965_rt_rx_hdr *iwl4965_rt;
3240
3241         /* First cache any information we need before we overwrite
3242          * the information provided in the skb from the hardware */
3243         s8 signal = stats->ssi;
3244         s8 noise = 0;
3245         int rate = stats->rate;
3246         u64 tsf = stats->mactime;
3247         __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3248
3249         /* We received data from the HW, so stop the watchdog */
3250         if (len > IWL_RX_BUF_SIZE - sizeof(*iwl4965_rt)) {
3251                 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3252                 return;
3253         }
3254
3255         /* copy the frame data to write after where the radiotap header goes */
3256         iwl4965_rt = (void *)rxb->skb->data;
3257         memmove(iwl4965_rt->payload, data, len);
3258
3259         iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3260         iwl4965_rt->rt_hdr.it_pad = 0; /* always good to zero */
3261
3262         /* total header + data */
3263         iwl4965_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl4965_rt));
3264
3265         /* Set the size of the skb to the size of the frame */
3266         skb_put(rxb->skb, sizeof(*iwl4965_rt) + len);
3267
3268         /* Big bitfield of all the fields we provide in radiotap */
3269         iwl4965_rt->rt_hdr.it_present =
3270             cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3271                         (1 << IEEE80211_RADIOTAP_FLAGS) |
3272                         (1 << IEEE80211_RADIOTAP_RATE) |
3273                         (1 << IEEE80211_RADIOTAP_CHANNEL) |
3274                         (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3275                         (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3276                         (1 << IEEE80211_RADIOTAP_ANTENNA));
3277
3278         /* Zero the flags, we'll add to them as we go */
3279         iwl4965_rt->rt_flags = 0;
3280
3281         iwl4965_rt->rt_tsf = cpu_to_le64(tsf);
3282
3283         /* Convert to dBm */
3284         iwl4965_rt->rt_dbmsignal = signal;
3285         iwl4965_rt->rt_dbmnoise = noise;
3286
3287         /* Convert the channel frequency and set the flags */
3288         iwl4965_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3289         if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3290                 iwl4965_rt->rt_chbitmask =
3291                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3292         else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3293                 iwl4965_rt->rt_chbitmask =
3294                     cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3295         else    /* 802.11g */
3296                 iwl4965_rt->rt_chbitmask =
3297                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3298
3299         rate = iwl4965_rate_index_from_plcp(rate);
3300         if (rate == -1)
3301                 iwl4965_rt->rt_rate = 0;
3302         else
3303                 iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee;
3304
3305         /* antenna number */
3306         iwl4965_rt->rt_antenna =
3307                 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3308
3309         /* set the preamble flag if we have it */
3310         if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3311                 iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3312
3313         IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3314
3315         stats->flag |= RX_FLAG_RADIOTAP;
3316         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3317         rxb->skb = NULL;
3318 }
3319
3320
3321 #define IWL_PACKET_RETRY_TIME HZ
3322
3323 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3324 {
3325         u16 sc = le16_to_cpu(header->seq_ctrl);
3326         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3327         u16 frag = sc & IEEE80211_SCTL_FRAG;
3328         u16 *last_seq, *last_frag;
3329         unsigned long *last_time;
3330
3331         switch (priv->iw_mode) {
3332         case IEEE80211_IF_TYPE_IBSS:{
3333                 struct list_head *p;
3334                 struct iwl4965_ibss_seq *entry = NULL;
3335                 u8 *mac = header->addr2;
3336                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3337
3338                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3339                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
3340                         if (!compare_ether_addr(entry->mac, mac))
3341                                 break;
3342                 }
3343                 if (p == &priv->ibss_mac_hash[index]) {
3344                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3345                         if (!entry) {
3346                                 IWL_ERROR("Cannot malloc new mac entry\n");
3347                                 return 0;
3348                         }
3349                         memcpy(entry->mac, mac, ETH_ALEN);
3350                         entry->seq_num = seq;
3351                         entry->frag_num = frag;
3352                         entry->packet_time = jiffies;
3353                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3354                         return 0;
3355                 }
3356                 last_seq = &entry->seq_num;
3357                 last_frag = &entry->frag_num;
3358                 last_time = &entry->packet_time;
3359                 break;
3360         }
3361         case IEEE80211_IF_TYPE_STA:
3362                 last_seq = &priv->last_seq_num;
3363                 last_frag = &priv->last_frag_num;
3364                 last_time = &priv->last_packet_time;
3365                 break;
3366         default:
3367                 return 0;
3368         }
3369         if ((*last_seq == seq) &&
3370             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3371                 if (*last_frag == frag)
3372                         goto drop;
3373                 if (*last_frag + 1 != frag)
3374                         /* out-of-order fragment */
3375                         goto drop;
3376         } else
3377                 *last_seq = seq;
3378
3379         *last_frag = frag;
3380         *last_time = jiffies;
3381         return 0;
3382
3383  drop:
3384         return 1;
3385 }
3386
3387 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3388
3389 #include "iwl-spectrum.h"
3390
3391 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3392 #define BEACON_TIME_MASK_HIGH   0xFF000000
3393 #define TIME_UNIT               1024
3394
3395 /*
3396  * extended beacon time format
3397  * time in usec will be changed into a 32-bit value in 8:24 format
3398  * the high 1 byte is the beacon counts
3399  * the lower 3 bytes is the time in usec within one beacon interval
3400  */
3401
3402 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3403 {
3404         u32 quot;
3405         u32 rem;
3406         u32 interval = beacon_interval * 1024;
3407
3408         if (!interval || !usec)
3409                 return 0;
3410
3411         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3412         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3413
3414         return (quot << 24) + rem;
3415 }
3416
3417 /* base is usually what we get from ucode with each received frame,
3418  * the same as HW timer counter counting down
3419  */
3420
3421 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3422 {
3423         u32 base_low = base & BEACON_TIME_MASK_LOW;
3424         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3425         u32 interval = beacon_interval * TIME_UNIT;
3426         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3427             (addon & BEACON_TIME_MASK_HIGH);
3428
3429         if (base_low > addon_low)
3430                 res += base_low - addon_low;
3431         else if (base_low < addon_low) {
3432                 res += interval + base_low - addon_low;
3433                 res += (1 << 24);
3434         } else
3435                 res += (1 << 24);
3436
3437         return cpu_to_le32(res);
3438 }
3439
3440 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3441                                struct ieee80211_measurement_params *params,
3442                                u8 type)
3443 {
3444         struct iwl4965_spectrum_cmd spectrum;
3445         struct iwl4965_rx_packet *res;
3446         struct iwl4965_host_cmd cmd = {
3447                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3448                 .data = (void *)&spectrum,
3449                 .meta.flags = CMD_WANT_SKB,
3450         };
3451         u32 add_time = le64_to_cpu(params->start_time);
3452         int rc;
3453         int spectrum_resp_status;
3454         int duration = le16_to_cpu(params->duration);
3455
3456         if (iwl4965_is_associated(priv))
3457                 add_time =
3458                     iwl4965_usecs_to_beacons(
3459                         le64_to_cpu(params->start_time) - priv->last_tsf,
3460                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3461
3462         memset(&spectrum, 0, sizeof(spectrum));
3463
3464         spectrum.channel_count = cpu_to_le16(1);
3465         spectrum.flags =
3466             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3467         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3468         cmd.len = sizeof(spectrum);
3469         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3470
3471         if (iwl4965_is_associated(priv))
3472                 spectrum.start_time =
3473                     iwl4965_add_beacon_time(priv->last_beacon_time,
3474                                 add_time,
3475                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3476         else
3477                 spectrum.start_time = 0;
3478
3479         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3480         spectrum.channels[0].channel = params->channel;
3481         spectrum.channels[0].type = type;
3482         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3483                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3484                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3485
3486         rc = iwl4965_send_cmd_sync(priv, &cmd);
3487         if (rc)
3488                 return rc;
3489
3490         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3491         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3492                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3493                 rc = -EIO;
3494         }
3495
3496         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3497         switch (spectrum_resp_status) {
3498         case 0:         /* Command will be handled */
3499                 if (res->u.spectrum.id != 0xff) {
3500                         IWL_DEBUG_INFO
3501                             ("Replaced existing measurement: %d\n",
3502                              res->u.spectrum.id);
3503                         priv->measurement_status &= ~MEASUREMENT_READY;
3504                 }
3505                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3506                 rc = 0;
3507                 break;
3508
3509         case 1:         /* Command will not be handled */
3510                 rc = -EAGAIN;
3511                 break;
3512         }
3513
3514         dev_kfree_skb_any(cmd.meta.u.skb);
3515
3516         return rc;
3517 }
3518 #endif
3519
3520 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3521                                  struct iwl4965_tx_info *tx_sta)
3522 {
3523
3524         tx_sta->status.ack_signal = 0;
3525         tx_sta->status.excessive_retries = 0;
3526         tx_sta->status.queue_length = 0;
3527         tx_sta->status.queue_number = 0;
3528
3529         if (in_interrupt())
3530                 ieee80211_tx_status_irqsafe(priv->hw,
3531                                             tx_sta->skb[0], &(tx_sta->status));
3532         else
3533                 ieee80211_tx_status(priv->hw,
3534                                     tx_sta->skb[0], &(tx_sta->status));
3535
3536         tx_sta->skb[0] = NULL;
3537 }
3538
3539 /**
3540  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3541  *
3542  * When FW advances 'R' index, all entries between old and new 'R' index
3543  * need to be reclaimed. As result, some free space forms.  If there is
3544  * enough free space (> low mark), wake the stack that feeds us.
3545  */
3546 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3547 {
3548         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3549         struct iwl4965_queue *q = &txq->q;
3550         int nfreed = 0;
3551
3552         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3553                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3554                           "is out of range [0-%d] %d %d.\n", txq_id,
3555                           index, q->n_bd, q->write_ptr, q->read_ptr);
3556                 return 0;
3557         }
3558
3559         for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3560                 q->read_ptr != index;
3561                 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3562                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3563                         iwl4965_txstatus_to_ieee(priv,
3564                                         &(txq->txb[txq->q.read_ptr]));
3565                         iwl4965_hw_txq_free_tfd(priv, txq);
3566                 } else if (nfreed > 1) {
3567                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3568                                         q->write_ptr, q->read_ptr);
3569                         queue_work(priv->workqueue, &priv->restart);
3570                 }
3571                 nfreed++;
3572         }
3573
3574         if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3575                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3576                         priv->mac80211_registered)
3577                 ieee80211_wake_queue(priv->hw, txq_id);
3578
3579
3580         return nfreed;
3581 }
3582
3583 static int iwl4965_is_tx_success(u32 status)
3584 {
3585         status &= TX_STATUS_MSK;
3586         return (status == TX_STATUS_SUCCESS)
3587             || (status == TX_STATUS_DIRECT_DONE);
3588 }
3589
3590 /******************************************************************************
3591  *
3592  * Generic RX handler implementations
3593  *
3594  ******************************************************************************/
3595 #ifdef CONFIG_IWL4965_HT
3596 #ifdef CONFIG_IWL4965_HT_AGG
3597
3598 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3599                                     struct ieee80211_hdr *hdr)
3600 {
3601         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3602                 return IWL_AP_ID;
3603         else {
3604                 u8 *da = ieee80211_get_DA(hdr);
3605                 return iwl4965_hw_find_station(priv, da);
3606         }
3607 }
3608
3609 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3610         struct iwl4965_priv *priv, int txq_id, int idx)
3611 {
3612         if (priv->txq[txq_id].txb[idx].skb[0])
3613                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3614                                 txb[idx].skb[0]->data;
3615         return NULL;
3616 }
3617
3618 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3619 {
3620         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3621                                 tx_resp->frame_count);
3622         return le32_to_cpu(*scd_ssn) & MAX_SN;
3623
3624 }
3625
3626 /**
3627  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3628  */
3629 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3630                                       struct iwl4965_ht_agg *agg,
3631                                       struct iwl4965_tx_resp *tx_resp,
3632                                       u16 start_idx)
3633 {
3634         u32 status;
3635         __le32 *frame_status = &tx_resp->status;
3636         struct ieee80211_tx_status *tx_status = NULL;
3637         struct ieee80211_hdr *hdr = NULL;
3638         int i, sh;
3639         int txq_id, idx;
3640         u16 seq;
3641
3642         if (agg->wait_for_ba)
3643                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3644
3645         agg->frame_count = tx_resp->frame_count;
3646         agg->start_idx = start_idx;
3647         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3648         agg->bitmap0 = agg->bitmap1 = 0;
3649
3650         /* # frames attempted by Tx command */
3651         if (agg->frame_count == 1) {
3652                 /* Only one frame was attempted; no block-ack will arrive */
3653                 struct iwl4965_tx_queue *txq ;
3654                 status = le32_to_cpu(frame_status[0]);
3655
3656                 txq_id = agg->txq_id;
3657                 txq = &priv->txq[txq_id];
3658                 /* FIXME: code repetition */
3659                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3660                                    agg->frame_count, agg->start_idx);
3661
3662                 tx_status = &(priv->txq[txq_id].txb[txq->q.read_ptr].status);
3663                 tx_status->retry_count = tx_resp->failure_frame;
3664                 tx_status->queue_number = status & 0xff;
3665                 tx_status->queue_length = tx_resp->bt_kill_count;
3666                 tx_status->queue_length |= tx_resp->failure_rts;
3667
3668                 tx_status->flags = iwl4965_is_tx_success(status)?
3669                         IEEE80211_TX_STATUS_ACK : 0;
3670                 tx_status->control.tx_rate =
3671                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3672                 /* FIXME: code repetition end */
3673
3674                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3675                                     status & 0xff, tx_resp->failure_frame);
3676                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3677                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3678
3679                 agg->wait_for_ba = 0;
3680         } else {
3681                 /* Two or more frames were attempted; expect block-ack */
3682                 u64 bitmap = 0;
3683                 int start = agg->start_idx;
3684
3685                 /* Construct bit-map of pending frames within Tx window */
3686                 for (i = 0; i < agg->frame_count; i++) {
3687                         u16 sc;
3688                         status = le32_to_cpu(frame_status[i]);
3689                         seq  = status >> 16;
3690                         idx = SEQ_TO_INDEX(seq);
3691                         txq_id = SEQ_TO_QUEUE(seq);
3692
3693                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3694                                       AGG_TX_STATE_ABORT_MSK))
3695                                 continue;
3696
3697                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3698                                            agg->frame_count, txq_id, idx);
3699
3700                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3701
3702                         sc = le16_to_cpu(hdr->seq_ctrl);
3703                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3704                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3705                                           " idx=%d, seq_idx=%d, seq=%d\n",
3706                                           idx, SEQ_TO_SN(sc),
3707                                           hdr->seq_ctrl);
3708                                 return -1;
3709                         }
3710
3711                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3712                                            i, idx, SEQ_TO_SN(sc));
3713
3714                         sh = idx - start;
3715                         if (sh > 64) {
3716                                 sh = (start - idx) + 0xff;
3717                                 bitmap = bitmap << sh;
3718                                 sh = 0;
3719                                 start = idx;
3720                         } else if (sh < -64)
3721                                 sh  = 0xff - (start - idx);
3722                         else if (sh < 0) {
3723                                 sh = start - idx;
3724                                 start = idx;
3725                                 bitmap = bitmap << sh;
3726                                 sh = 0;
3727                         }
3728                         bitmap |= (1 << sh);
3729                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3730                                            start, (u32)(bitmap & 0xFFFFFFFF));
3731                 }
3732
3733                 agg->bitmap0 = bitmap & 0xFFFFFFFF;
3734                 agg->bitmap1 = bitmap >> 32;
3735                 agg->start_idx = start;
3736                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3737                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3738                                    agg->frame_count, agg->start_idx,
3739                                    agg->bitmap0);
3740
3741                 if (bitmap)
3742                         agg->wait_for_ba = 1;
3743         }
3744         return 0;
3745 }
3746 #endif
3747 #endif
3748
3749 /**
3750  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3751  */
3752 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3753                             struct iwl4965_rx_mem_buffer *rxb)
3754 {
3755         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3756         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3757         int txq_id = SEQ_TO_QUEUE(sequence);
3758         int index = SEQ_TO_INDEX(sequence);
3759         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3760         struct ieee80211_tx_status *tx_status;
3761         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3762         u32  status = le32_to_cpu(tx_resp->status);
3763 #ifdef CONFIG_IWL4965_HT
3764 #ifdef CONFIG_IWL4965_HT_AGG
3765         int tid, sta_id;
3766 #endif
3767 #endif
3768
3769         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3770                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3771                           "is out of range [0-%d] %d %d\n", txq_id,
3772                           index, txq->q.n_bd, txq->q.write_ptr,
3773                           txq->q.read_ptr);
3774                 return;
3775         }
3776
3777 #ifdef CONFIG_IWL4965_HT
3778 #ifdef CONFIG_IWL4965_HT_AGG
3779         if (txq->sched_retry) {
3780                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3781                 struct ieee80211_hdr *hdr =
3782                         iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3783                 struct iwl4965_ht_agg *agg = NULL;
3784                 __le16 *qc = ieee80211_get_qos_ctrl(hdr);
3785
3786                 if (qc == NULL) {
3787                         IWL_ERROR("BUG_ON qc is null!!!!\n");
3788                         return;
3789                 }
3790
3791                 tid = le16_to_cpu(*qc) & 0xf;
3792
3793                 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3794                 if (unlikely(sta_id == IWL_INVALID_STATION)) {
3795                         IWL_ERROR("Station not known for\n");
3796                         return;
3797                 }
3798
3799                 agg = &priv->stations[sta_id].tid[tid].agg;
3800
3801                 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3802
3803                 if ((tx_resp->frame_count == 1) &&
3804                     !iwl4965_is_tx_success(status)) {
3805                         /* TODO: send BAR */
3806                 }
3807
3808                 if ((txq->q.read_ptr != (scd_ssn & 0xff))) {
3809                         index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3810                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3811                                            "%d index %d\n", scd_ssn , index);
3812                         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3813                 }
3814         } else {
3815 #endif /* CONFIG_IWL4965_HT_AGG */
3816 #endif /* CONFIG_IWL4965_HT */
3817         tx_status = &(txq->txb[txq->q.read_ptr].status);
3818
3819         tx_status->retry_count = tx_resp->failure_frame;
3820         tx_status->queue_number = status;
3821         tx_status->queue_length = tx_resp->bt_kill_count;
3822         tx_status->queue_length |= tx_resp->failure_rts;
3823
3824         tx_status->flags =
3825             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3826
3827         tx_status->control.tx_rate =
3828                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3829
3830         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3831                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3832                      status, le32_to_cpu(tx_resp->rate_n_flags),
3833                      tx_resp->failure_frame);
3834
3835         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3836         if (index != -1)
3837                 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3838 #ifdef CONFIG_IWL4965_HT
3839 #ifdef CONFIG_IWL4965_HT_AGG
3840         }
3841 #endif /* CONFIG_IWL4965_HT_AGG */
3842 #endif /* CONFIG_IWL4965_HT */
3843
3844         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3845                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3846 }
3847
3848
3849 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3850                                struct iwl4965_rx_mem_buffer *rxb)
3851 {
3852         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3853         struct iwl4965_alive_resp *palive;
3854         struct delayed_work *pwork;
3855
3856         palive = &pkt->u.alive_frame;
3857
3858         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3859                        "0x%01X 0x%01X\n",
3860                        palive->is_valid, palive->ver_type,
3861                        palive->ver_subtype);
3862
3863         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3864                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3865                 memcpy(&priv->card_alive_init,
3866                        &pkt->u.alive_frame,
3867                        sizeof(struct iwl4965_init_alive_resp));
3868                 pwork = &priv->init_alive_start;
3869         } else {
3870                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3871                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3872                        sizeof(struct iwl4965_alive_resp));
3873                 pwork = &priv->alive_start;
3874         }
3875
3876         /* We delay the ALIVE response by 5ms to
3877          * give the HW RF Kill time to activate... */
3878         if (palive->is_valid == UCODE_VALID_OK)
3879                 queue_delayed_work(priv->workqueue, pwork,
3880                                    msecs_to_jiffies(5));
3881         else
3882                 IWL_WARNING("uCode did not respond OK.\n");
3883 }
3884
3885 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3886                                  struct iwl4965_rx_mem_buffer *rxb)
3887 {
3888         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3889
3890         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3891         return;
3892 }
3893
3894 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3895                                struct iwl4965_rx_mem_buffer *rxb)
3896 {
3897         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3898
3899         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3900                 "seq 0x%04X ser 0x%08X\n",
3901                 le32_to_cpu(pkt->u.err_resp.error_type),
3902                 get_cmd_string(pkt->u.err_resp.cmd_id),
3903                 pkt->u.err_resp.cmd_id,
3904                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3905                 le32_to_cpu(pkt->u.err_resp.error_info));
3906 }
3907
3908 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3909
3910 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3911 {
3912         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3913         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3914         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3915         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3916                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3917         rxon->channel = csa->channel;
3918         priv->staging_rxon.channel = csa->channel;
3919 }
3920
3921 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3922                                           struct iwl4965_rx_mem_buffer *rxb)
3923 {
3924 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3925         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3926         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3927
3928         if (!report->state) {
3929                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3930                           "Spectrum Measure Notification: Start\n");
3931                 return;
3932         }
3933
3934         memcpy(&priv->measure_report, report, sizeof(*report));
3935         priv->measurement_status |= MEASUREMENT_READY;
3936 #endif
3937 }
3938
3939 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3940                                   struct iwl4965_rx_mem_buffer *rxb)
3941 {
3942 #ifdef CONFIG_IWL4965_DEBUG
3943         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3944         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3945         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3946                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3947 #endif
3948 }
3949
3950 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3951                                              struct iwl4965_rx_mem_buffer *rxb)
3952 {
3953         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3954         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3955                         "notification for %s:\n",
3956                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3957         iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3958 }
3959
3960 static void iwl4965_bg_beacon_update(struct work_struct *work)
3961 {
3962         struct iwl4965_priv *priv =
3963                 container_of(work, struct iwl4965_priv, beacon_update);
3964         struct sk_buff *beacon;
3965
3966         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3967         beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3968
3969         if (!beacon) {
3970                 IWL_ERROR("update beacon failed\n");
3971                 return;
3972         }
3973
3974         mutex_lock(&priv->mutex);
3975         /* new beacon skb is allocated every time; dispose previous.*/
3976         if (priv->ibss_beacon)
3977                 dev_kfree_skb(priv->ibss_beacon);
3978
3979         priv->ibss_beacon = beacon;
3980         mutex_unlock(&priv->mutex);
3981
3982         iwl4965_send_beacon_cmd(priv);
3983 }
3984
3985 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3986                                 struct iwl4965_rx_mem_buffer *rxb)
3987 {
3988 #ifdef CONFIG_IWL4965_DEBUG
3989         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3990         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3991         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3992
3993         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3994                 "tsf %d %d rate %d\n",
3995                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3996                 beacon->beacon_notify_hdr.failure_frame,
3997                 le32_to_cpu(beacon->ibss_mgr_status),
3998                 le32_to_cpu(beacon->high_tsf),
3999                 le32_to_cpu(beacon->low_tsf), rate);
4000 #endif
4001
4002         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4003             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
4004                 queue_work(priv->workqueue, &priv->beacon_update);
4005 }
4006
4007 /* Service response to REPLY_SCAN_CMD (0x80) */
4008 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
4009                               struct iwl4965_rx_mem_buffer *rxb)
4010 {
4011 #ifdef CONFIG_IWL4965_DEBUG
4012         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4013         struct iwl4965_scanreq_notification *notif =
4014             (struct iwl4965_scanreq_notification *)pkt->u.raw;
4015
4016         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
4017 #endif
4018 }
4019
4020 /* Service SCAN_START_NOTIFICATION (0x82) */
4021 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
4022                                     struct iwl4965_rx_mem_buffer *rxb)
4023 {
4024         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4025         struct iwl4965_scanstart_notification *notif =
4026             (struct iwl4965_scanstart_notification *)pkt->u.raw;
4027         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
4028         IWL_DEBUG_SCAN("Scan start: "
4029                        "%d [802.11%s] "
4030                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
4031                        notif->channel,
4032                        notif->band ? "bg" : "a",
4033                        notif->tsf_high,
4034                        notif->tsf_low, notif->status, notif->beacon_timer);
4035 }
4036
4037 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
4038 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
4039                                       struct iwl4965_rx_mem_buffer *rxb)
4040 {
4041         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4042         struct iwl4965_scanresults_notification *notif =
4043             (struct iwl4965_scanresults_notification *)pkt->u.raw;
4044
4045         IWL_DEBUG_SCAN("Scan ch.res: "
4046                        "%d [802.11%s] "
4047                        "(TSF: 0x%08X:%08X) - %d "
4048                        "elapsed=%lu usec (%dms since last)\n",
4049                        notif->channel,
4050                        notif->band ? "bg" : "a",
4051                        le32_to_cpu(notif->tsf_high),
4052                        le32_to_cpu(notif->tsf_low),
4053                        le32_to_cpu(notif->statistics[0]),
4054                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
4055                        jiffies_to_msecs(elapsed_jiffies
4056                                         (priv->last_scan_jiffies, jiffies)));
4057
4058         priv->last_scan_jiffies = jiffies;
4059         priv->next_scan_jiffies = 0;
4060 }
4061
4062 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
4063 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
4064                                        struct iwl4965_rx_mem_buffer *rxb)
4065 {
4066         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4067         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
4068
4069         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
4070                        scan_notif->scanned_channels,
4071                        scan_notif->tsf_low,
4072                        scan_notif->tsf_high, scan_notif->status);
4073
4074         /* The HW is no longer scanning */
4075         clear_bit(STATUS_SCAN_HW, &priv->status);
4076
4077         /* The scan completion notification came in, so kill that timer... */
4078         cancel_delayed_work(&priv->scan_check);
4079
4080         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
4081                        (priv->scan_bands == 2) ? "2.4" : "5.2",
4082                        jiffies_to_msecs(elapsed_jiffies
4083                                         (priv->scan_pass_start, jiffies)));
4084
4085         /* Remove this scanned band from the list
4086          * of pending bands to scan */
4087         priv->scan_bands--;
4088
4089         /* If a request to abort was given, or the scan did not succeed
4090          * then we reset the scan state machine and terminate,
4091          * re-queuing another scan if one has been requested */
4092         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4093                 IWL_DEBUG_INFO("Aborted scan completed.\n");
4094                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
4095         } else {
4096                 /* If there are more bands on this scan pass reschedule */
4097                 if (priv->scan_bands > 0)
4098                         goto reschedule;
4099         }
4100
4101         priv->last_scan_jiffies = jiffies;
4102         priv->next_scan_jiffies = 0;
4103         IWL_DEBUG_INFO("Setting scan to off\n");
4104
4105         clear_bit(STATUS_SCANNING, &priv->status);
4106
4107         IWL_DEBUG_INFO("Scan took %dms\n",
4108                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4109
4110         queue_work(priv->workqueue, &priv->scan_completed);
4111
4112         return;
4113
4114 reschedule:
4115         priv->scan_pass_start = jiffies;
4116         queue_work(priv->workqueue, &priv->request_scan);
4117 }
4118
4119 /* Handle notification from uCode that card's power state is changing
4120  * due to software, hardware, or critical temperature RFKILL */
4121 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4122                                     struct iwl4965_rx_mem_buffer *rxb)
4123 {
4124         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4125         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4126         unsigned long status = priv->status;
4127
4128         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4129                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4130                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4131
4132         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4133                      RF_CARD_DISABLED)) {
4134
4135                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4136                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4137
4138                 if (!iwl4965_grab_nic_access(priv)) {
4139                         iwl4965_write_direct32(
4140                                 priv, HBUS_TARG_MBX_C,
4141                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4142
4143                         iwl4965_release_nic_access(priv);
4144                 }
4145
4146                 if (!(flags & RXON_CARD_DISABLED)) {
4147                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4148                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4149                         if (!iwl4965_grab_nic_access(priv)) {
4150                                 iwl4965_write_direct32(
4151                                         priv, HBUS_TARG_MBX_C,
4152                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4153
4154                                 iwl4965_release_nic_access(priv);
4155                         }
4156                 }
4157
4158                 if (flags & RF_CARD_DISABLED) {
4159                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4160                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4161                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4162                         if (!iwl4965_grab_nic_access(priv))
4163                                 iwl4965_release_nic_access(priv);
4164                 }
4165         }
4166
4167         if (flags & HW_CARD_DISABLED)
4168                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4169         else
4170                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4171
4172
4173         if (flags & SW_CARD_DISABLED)
4174                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4175         else
4176                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4177
4178         if (!(flags & RXON_CARD_DISABLED))
4179                 iwl4965_scan_cancel(priv);
4180
4181         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4182              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4183             (test_bit(STATUS_RF_KILL_SW, &status) !=
4184              test_bit(STATUS_RF_KILL_SW, &priv->status)))
4185                 queue_work(priv->workqueue, &priv->rf_kill);
4186         else
4187                 wake_up_interruptible(&priv->wait_command_queue);
4188 }
4189
4190 /**
4191  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4192  *
4193  * Setup the RX handlers for each of the reply types sent from the uCode
4194  * to the host.
4195  *
4196  * This function chains into the hardware specific files for them to setup
4197  * any hardware specific handlers as well.
4198  */
4199 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4200 {
4201         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4202         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4203         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4204         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4205         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4206             iwl4965_rx_spectrum_measure_notif;
4207         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4208         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4209             iwl4965_rx_pm_debug_statistics_notif;
4210         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4211
4212         /*
4213          * The same handler is used for both the REPLY to a discrete
4214          * statistics request from the host as well as for the periodic
4215          * statistics notifications (after received beacons) from the uCode.
4216          */
4217         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4218         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4219
4220         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4221         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4222         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4223             iwl4965_rx_scan_results_notif;
4224         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4225             iwl4965_rx_scan_complete_notif;
4226         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4227         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4228
4229         /* Set up hardware specific Rx handlers */
4230         iwl4965_hw_rx_handler_setup(priv);
4231 }
4232
4233 /**
4234  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4235  * @rxb: Rx buffer to reclaim
4236  *
4237  * If an Rx buffer has an async callback associated with it the callback
4238  * will be executed.  The attached skb (if present) will only be freed
4239  * if the callback returns 1
4240  */
4241 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4242                                 struct iwl4965_rx_mem_buffer *rxb)
4243 {
4244         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4245         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4246         int txq_id = SEQ_TO_QUEUE(sequence);
4247         int index = SEQ_TO_INDEX(sequence);
4248         int huge = sequence & SEQ_HUGE_FRAME;
4249         int cmd_index;
4250         struct iwl4965_cmd *cmd;
4251
4252         /* If a Tx command is being handled and it isn't in the actual
4253          * command queue then there a command routing bug has been introduced
4254          * in the queue management code. */
4255         if (txq_id != IWL_CMD_QUEUE_NUM)
4256                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4257                           txq_id, pkt->hdr.cmd);
4258         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4259
4260         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4261         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4262
4263         /* Input error checking is done when commands are added to queue. */
4264         if (cmd->meta.flags & CMD_WANT_SKB) {
4265                 cmd->meta.source->u.skb = rxb->skb;
4266                 rxb->skb = NULL;
4267         } else if (cmd->meta.u.callback &&
4268                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
4269                 rxb->skb = NULL;
4270
4271         iwl4965_tx_queue_reclaim(priv, txq_id, index);
4272
4273         if (!(cmd->meta.flags & CMD_ASYNC)) {
4274                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4275                 wake_up_interruptible(&priv->wait_command_queue);
4276         }
4277 }
4278
4279 /************************** RX-FUNCTIONS ****************************/
4280 /*
4281  * Rx theory of operation
4282  *
4283  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4284  * each of which point to Receive Buffers to be filled by 4965.  These get
4285  * used not only for Rx frames, but for any command response or notification
4286  * from the 4965.  The driver and 4965 manage the Rx buffers by means
4287  * of indexes into the circular buffer.
4288  *
4289  * Rx Queue Indexes
4290  * The host/firmware share two index registers for managing the Rx buffers.
4291  *
4292  * The READ index maps to the first position that the firmware may be writing
4293  * to -- the driver can read up to (but not including) this position and get
4294  * good data.
4295  * The READ index is managed by the firmware once the card is enabled.
4296  *
4297  * The WRITE index maps to the last position the driver has read from -- the
4298  * position preceding WRITE is the last slot the firmware can place a packet.
4299  *
4300  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4301  * WRITE = READ.
4302  *
4303  * During initialization, the host sets up the READ queue position to the first
4304  * INDEX position, and WRITE to the last (READ - 1 wrapped)
4305  *
4306  * When the firmware places a packet in a buffer, it will advance the READ index
4307  * and fire the RX interrupt.  The driver can then query the READ index and
4308  * process as many packets as possible, moving the WRITE index forward as it
4309  * resets the Rx queue buffers with new memory.
4310  *
4311  * The management in the driver is as follows:
4312  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
4313  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4314  *   to replenish the iwl->rxq->rx_free.
4315  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4316  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
4317  *   'processed' and 'read' driver indexes as well)
4318  * + A received packet is processed and handed to the kernel network stack,
4319  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
4320  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4321  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4322  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
4323  *   were enough free buffers and RX_STALLED is set it is cleared.
4324  *
4325  *
4326  * Driver sequence:
4327  *
4328  * iwl4965_rx_queue_alloc()   Allocates rx_free
4329  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
4330  *                            iwl4965_rx_queue_restock
4331  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4332  *                            queue, updates firmware pointers, and updates
4333  *                            the WRITE index.  If insufficient rx_free buffers
4334  *                            are available, schedules iwl4965_rx_replenish
4335  *
4336  * -- enable interrupts --
4337  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
4338  *                            READ INDEX, detaching the SKB from the pool.
4339  *                            Moves the packet buffer from queue to rx_used.
4340  *                            Calls iwl4965_rx_queue_restock to refill any empty
4341  *                            slots.
4342  * ...
4343  *
4344  */
4345
4346 /**
4347  * iwl4965_rx_queue_space - Return number of free slots available in queue.
4348  */
4349 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4350 {
4351         int s = q->read - q->write;
4352         if (s <= 0)
4353                 s += RX_QUEUE_SIZE;
4354         /* keep some buffer to not confuse full and empty queue */
4355         s -= 2;
4356         if (s < 0)
4357                 s = 0;
4358         return s;
4359 }
4360
4361 /**
4362  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4363  */
4364 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4365 {
4366         u32 reg = 0;
4367         int rc = 0;
4368         unsigned long flags;
4369
4370         spin_lock_irqsave(&q->lock, flags);
4371
4372         if (q->need_update == 0)
4373                 goto exit_unlock;
4374
4375         /* If power-saving is in use, make sure device is awake */
4376         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4377                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4378
4379                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4380                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4381                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4382                         goto exit_unlock;
4383                 }
4384
4385                 rc = iwl4965_grab_nic_access(priv);
4386                 if (rc)
4387                         goto exit_unlock;
4388
4389                 /* Device expects a multiple of 8 */
4390                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4391                                      q->write & ~0x7);
4392                 iwl4965_release_nic_access(priv);
4393
4394         /* Else device is assumed to be awake */
4395         } else
4396                 /* Device expects a multiple of 8 */
4397                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4398
4399
4400         q->need_update = 0;
4401
4402  exit_unlock:
4403         spin_unlock_irqrestore(&q->lock, flags);
4404         return rc;
4405 }
4406
4407 /**
4408  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4409  */
4410 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4411                                           dma_addr_t dma_addr)
4412 {
4413         return cpu_to_le32((u32)(dma_addr >> 8));
4414 }
4415
4416
4417 /**
4418  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4419  *
4420  * If there are slots in the RX queue that need to be restocked,
4421  * and we have free pre-allocated buffers, fill the ranks as much
4422  * as we can, pulling from rx_free.
4423  *
4424  * This moves the 'write' index forward to catch up with 'processed', and
4425  * also updates the memory address in the firmware to reference the new
4426  * target buffer.
4427  */
4428 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4429 {
4430         struct iwl4965_rx_queue *rxq = &priv->rxq;
4431         struct list_head *element;
4432         struct iwl4965_rx_mem_buffer *rxb;
4433         unsigned long flags;
4434         int write, rc;
4435
4436         spin_lock_irqsave(&rxq->lock, flags);
4437         write = rxq->write & ~0x7;
4438         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4439                 /* Get next free Rx buffer, remove from free list */
4440                 element = rxq->rx_free.next;
4441                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4442                 list_del(element);
4443
4444                 /* Point to Rx buffer via next RBD in circular buffer */
4445                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4446                 rxq->queue[rxq->write] = rxb;
4447                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4448                 rxq->free_count--;
4449         }
4450         spin_unlock_irqrestore(&rxq->lock, flags);
4451         /* If the pre-allocated buffer pool is dropping low, schedule to
4452          * refill it */
4453         if (rxq->free_count <= RX_LOW_WATERMARK)
4454                 queue_work(priv->workqueue, &priv->rx_replenish);
4455
4456
4457         /* If we've added more space for the firmware to place data, tell it.
4458          * Increment device's write pointer in multiples of 8. */
4459         if ((write != (rxq->write & ~0x7))
4460             || (abs(rxq->write - rxq->read) > 7)) {
4461                 spin_lock_irqsave(&rxq->lock, flags);
4462                 rxq->need_update = 1;
4463                 spin_unlock_irqrestore(&rxq->lock, flags);
4464                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4465                 if (rc)
4466                         return rc;
4467         }
4468
4469         return 0;
4470 }
4471
4472 /**
4473  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4474  *
4475  * When moving to rx_free an SKB is allocated for the slot.
4476  *
4477  * Also restock the Rx queue via iwl4965_rx_queue_restock.
4478  * This is called as a scheduled work item (except for during initialization)
4479  */
4480 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4481 {
4482         struct iwl4965_rx_queue *rxq = &priv->rxq;
4483         struct list_head *element;
4484         struct iwl4965_rx_mem_buffer *rxb;
4485         unsigned long flags;
4486         spin_lock_irqsave(&rxq->lock, flags);
4487         while (!list_empty(&rxq->rx_used)) {
4488                 element = rxq->rx_used.next;
4489                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4490
4491                 /* Alloc a new receive buffer */
4492                 rxb->skb =
4493                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4494                 if (!rxb->skb) {
4495                         if (net_ratelimit())
4496                                 printk(KERN_CRIT DRV_NAME
4497                                        ": Can not allocate SKB buffers\n");
4498                         /* We don't reschedule replenish work here -- we will
4499                          * call the restock method and if it still needs
4500                          * more buffers it will schedule replenish */
4501                         break;
4502                 }
4503                 priv->alloc_rxb_skb++;
4504                 list_del(element);
4505
4506                 /* Get physical address of RB/SKB */
4507                 rxb->dma_addr =
4508                     pci_map_single(priv->pci_dev, rxb->skb->data,
4509                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4510                 list_add_tail(&rxb->list, &rxq->rx_free);
4511                 rxq->free_count++;
4512         }
4513         spin_unlock_irqrestore(&rxq->lock, flags);
4514 }
4515
4516 /*
4517  * this should be called while priv->lock is locked
4518 */
4519 void __iwl4965_rx_replenish(void *data)
4520 {
4521         struct iwl4965_priv *priv = data;
4522
4523         iwl4965_rx_allocate(priv);
4524         iwl4965_rx_queue_restock(priv);
4525 }
4526
4527
4528 void iwl4965_rx_replenish(void *data)
4529 {
4530         struct iwl4965_priv *priv = data;
4531         unsigned long flags;
4532
4533         iwl4965_rx_allocate(priv);
4534
4535         spin_lock_irqsave(&priv->lock, flags);
4536         iwl4965_rx_queue_restock(priv);
4537         spin_unlock_irqrestore(&priv->lock, flags);
4538 }
4539
4540 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4541  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4542  * This free routine walks the list of POOL entries and if SKB is set to
4543  * non NULL it is unmapped and freed
4544  */
4545 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4546 {
4547         int i;
4548         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4549                 if (rxq->pool[i].skb != NULL) {
4550                         pci_unmap_single(priv->pci_dev,
4551                                          rxq->pool[i].dma_addr,
4552                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4553                         dev_kfree_skb(rxq->pool[i].skb);
4554                 }
4555         }
4556
4557         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4558                             rxq->dma_addr);
4559         rxq->bd = NULL;
4560 }
4561
4562 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4563 {
4564         struct iwl4965_rx_queue *rxq = &priv->rxq;
4565         struct pci_dev *dev = priv->pci_dev;
4566         int i;
4567
4568         spin_lock_init(&rxq->lock);
4569         INIT_LIST_HEAD(&rxq->rx_free);
4570         INIT_LIST_HEAD(&rxq->rx_used);
4571
4572         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4573         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4574         if (!rxq->bd)
4575                 return -ENOMEM;
4576
4577         /* Fill the rx_used queue with _all_ of the Rx buffers */
4578         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4579                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4580
4581         /* Set us so that we have processed and used all buffers, but have
4582          * not restocked the Rx queue with fresh buffers */
4583         rxq->read = rxq->write = 0;
4584         rxq->free_count = 0;
4585         rxq->need_update = 0;
4586         return 0;
4587 }
4588
4589 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4590 {
4591         unsigned long flags;
4592         int i;
4593         spin_lock_irqsave(&rxq->lock, flags);
4594         INIT_LIST_HEAD(&rxq->rx_free);
4595         INIT_LIST_HEAD(&rxq->rx_used);
4596         /* Fill the rx_used queue with _all_ of the Rx buffers */
4597         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4598                 /* In the reset function, these buffers may have been allocated
4599                  * to an SKB, so we need to unmap and free potential storage */
4600                 if (rxq->pool[i].skb != NULL) {
4601                         pci_unmap_single(priv->pci_dev,
4602                                          rxq->pool[i].dma_addr,
4603                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4604                         priv->alloc_rxb_skb--;
4605                         dev_kfree_skb(rxq->pool[i].skb);
4606                         rxq->pool[i].skb = NULL;
4607                 }
4608                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4609         }
4610
4611         /* Set us so that we have processed and used all buffers, but have
4612          * not restocked the Rx queue with fresh buffers */
4613         rxq->read = rxq->write = 0;
4614         rxq->free_count = 0;
4615         spin_unlock_irqrestore(&rxq->lock, flags);
4616 }
4617
4618 /* Convert linear signal-to-noise ratio into dB */
4619 static u8 ratio2dB[100] = {
4620 /*       0   1   2   3   4   5   6   7   8   9 */
4621          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4622         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4623         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4624         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4625         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4626         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4627         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4628         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4629         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4630         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4631 };
4632
4633 /* Calculates a relative dB value from a ratio of linear
4634  *   (i.e. not dB) signal levels.
4635  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4636 int iwl4965_calc_db_from_ratio(int sig_ratio)
4637 {
4638         /* 1000:1 or higher just report as 60 dB */
4639         if (sig_ratio >= 1000)
4640                 return 60;
4641
4642         /* 100:1 or higher, divide by 10 and use table,
4643          *   add 20 dB to make up for divide by 10 */
4644         if (sig_ratio >= 100)
4645                 return (20 + (int)ratio2dB[sig_ratio/10]);
4646
4647         /* We shouldn't see this */
4648         if (sig_ratio < 1)
4649                 return 0;
4650
4651         /* Use table for ratios 1:1 - 99:1 */
4652         return (int)ratio2dB[sig_ratio];
4653 }
4654
4655 #define PERFECT_RSSI (-20) /* dBm */
4656 #define WORST_RSSI (-95)   /* dBm */
4657 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4658
4659 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4660  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4661  *   about formulas used below. */
4662 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4663 {
4664         int sig_qual;
4665         int degradation = PERFECT_RSSI - rssi_dbm;
4666
4667         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4668          * as indicator; formula is (signal dbm - noise dbm).
4669          * SNR at or above 40 is a great signal (100%).
4670          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4671          * Weakest usable signal is usually 10 - 15 dB SNR. */
4672         if (noise_dbm) {
4673                 if (rssi_dbm - noise_dbm >= 40)
4674                         return 100;
4675                 else if (rssi_dbm < noise_dbm)
4676                         return 0;
4677                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4678
4679         /* Else use just the signal level.
4680          * This formula is a least squares fit of data points collected and
4681          *   compared with a reference system that had a percentage (%) display
4682          *   for signal quality. */
4683         } else
4684                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4685                             (15 * RSSI_RANGE + 62 * degradation)) /
4686                            (RSSI_RANGE * RSSI_RANGE);
4687
4688         if (sig_qual > 100)
4689                 sig_qual = 100;
4690         else if (sig_qual < 1)
4691                 sig_qual = 0;
4692
4693         return sig_qual;
4694 }
4695
4696 /**
4697  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4698  *
4699  * Uses the priv->rx_handlers callback function array to invoke
4700  * the appropriate handlers, including command responses,
4701  * frame-received notifications, and other notifications.
4702  */
4703 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4704 {
4705         struct iwl4965_rx_mem_buffer *rxb;
4706         struct iwl4965_rx_packet *pkt;
4707         struct iwl4965_rx_queue *rxq = &priv->rxq;
4708         u32 r, i;
4709         int reclaim;
4710         unsigned long flags;
4711         u8 fill_rx = 0;
4712         u32 count = 0;
4713
4714         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4715          * buffer that the driver may process (last buffer filled by ucode). */
4716         r = iwl4965_hw_get_rx_read(priv);
4717         i = rxq->read;
4718
4719         /* Rx interrupt, but nothing sent from uCode */
4720         if (i == r)
4721                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4722
4723         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4724                 fill_rx = 1;
4725
4726         while (i != r) {
4727                 rxb = rxq->queue[i];
4728
4729                 /* If an RXB doesn't have a Rx queue slot associated with it,
4730                  * then a bug has been introduced in the queue refilling
4731                  * routines -- catch it here */
4732                 BUG_ON(rxb == NULL);
4733
4734                 rxq->queue[i] = NULL;
4735
4736                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4737                                             IWL_RX_BUF_SIZE,
4738                                             PCI_DMA_FROMDEVICE);
4739                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4740
4741                 /* Reclaim a command buffer only if this packet is a response
4742                  *   to a (driver-originated) command.
4743                  * If the packet (e.g. Rx frame) originated from uCode,
4744                  *   there is no command buffer to reclaim.
4745                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4746                  *   but apparently a few don't get set; catch them here. */
4747                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4748                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4749                         (pkt->hdr.cmd != REPLY_4965_RX) &&
4750                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4751                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4752                         (pkt->hdr.cmd != REPLY_TX);
4753
4754                 /* Based on type of command response or notification,
4755                  *   handle those that need handling via function in
4756                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4757                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4758                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4759                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4760                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4761                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4762                 } else {
4763                         /* No handling needed */
4764                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4765                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4766                                 r, i, get_cmd_string(pkt->hdr.cmd),
4767                                 pkt->hdr.cmd);
4768                 }
4769
4770                 if (reclaim) {
4771                         /* Invoke any callbacks, transfer the skb to caller, and
4772                          * fire off the (possibly) blocking iwl4965_send_cmd()
4773                          * as we reclaim the driver command queue */
4774                         if (rxb && rxb->skb)
4775                                 iwl4965_tx_cmd_complete(priv, rxb);
4776                         else
4777                                 IWL_WARNING("Claim null rxb?\n");
4778                 }
4779
4780                 /* For now we just don't re-use anything.  We can tweak this
4781                  * later to try and re-use notification packets and SKBs that
4782                  * fail to Rx correctly */
4783                 if (rxb->skb != NULL) {
4784                         priv->alloc_rxb_skb--;
4785                         dev_kfree_skb_any(rxb->skb);
4786                         rxb->skb = NULL;
4787                 }
4788
4789                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4790                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4791                 spin_lock_irqsave(&rxq->lock, flags);
4792                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4793                 spin_unlock_irqrestore(&rxq->lock, flags);
4794                 i = (i + 1) & RX_QUEUE_MASK;
4795                 /* If there are a lot of unused frames,
4796                  * restock the Rx queue so ucode wont assert. */
4797                 if (fill_rx) {
4798                         count++;
4799                         if (count >= 8) {
4800                                 priv->rxq.read = i;
4801                                 __iwl4965_rx_replenish(priv);
4802                                 count = 0;
4803                         }
4804                 }
4805         }
4806
4807         /* Backtrack one entry */
4808         priv->rxq.read = i;
4809         iwl4965_rx_queue_restock(priv);
4810 }
4811
4812 /**
4813  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4814  */
4815 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4816                                   struct iwl4965_tx_queue *txq)
4817 {
4818         u32 reg = 0;
4819         int rc = 0;
4820         int txq_id = txq->q.id;
4821
4822         if (txq->need_update == 0)
4823                 return rc;
4824
4825         /* if we're trying to save power */
4826         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4827                 /* wake up nic if it's powered down ...
4828                  * uCode will wake up, and interrupt us again, so next
4829                  * time we'll skip this part. */
4830                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4831
4832                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4833                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4834                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4835                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4836                         return rc;
4837                 }
4838
4839                 /* restore this queue's parameters in nic hardware. */
4840                 rc = iwl4965_grab_nic_access(priv);
4841                 if (rc)
4842                         return rc;
4843                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4844                                      txq->q.write_ptr | (txq_id << 8));
4845                 iwl4965_release_nic_access(priv);
4846
4847         /* else not in power-save mode, uCode will never sleep when we're
4848          * trying to tx (during RFKILL, we're not trying to tx). */
4849         } else
4850                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4851                             txq->q.write_ptr | (txq_id << 8));
4852
4853         txq->need_update = 0;
4854
4855         return rc;
4856 }
4857
4858 #ifdef CONFIG_IWL4965_DEBUG
4859 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4860 {
4861         DECLARE_MAC_BUF(mac);
4862
4863         IWL_DEBUG_RADIO("RX CONFIG:\n");
4864         iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4865         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4866         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4867         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4868                         le32_to_cpu(rxon->filter_flags));
4869         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4870         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4871                         rxon->ofdm_basic_rates);
4872         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4873         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4874                         print_mac(mac, rxon->node_addr));
4875         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4876                         print_mac(mac, rxon->bssid_addr));
4877         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4878 }
4879 #endif
4880
4881 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4882 {
4883         IWL_DEBUG_ISR("Enabling interrupts\n");
4884         set_bit(STATUS_INT_ENABLED, &priv->status);
4885         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4886 }
4887
4888 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4889 {
4890         clear_bit(STATUS_INT_ENABLED, &priv->status);
4891
4892         /* disable interrupts from uCode/NIC to host */
4893         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4894
4895         /* acknowledge/clear/reset any interrupts still pending
4896          * from uCode or flow handler (Rx/Tx DMA) */
4897         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4898         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4899         IWL_DEBUG_ISR("Disabled interrupts\n");
4900 }
4901
4902 static const char *desc_lookup(int i)
4903 {
4904         switch (i) {
4905         case 1:
4906                 return "FAIL";
4907         case 2:
4908                 return "BAD_PARAM";
4909         case 3:
4910                 return "BAD_CHECKSUM";
4911         case 4:
4912                 return "NMI_INTERRUPT";
4913         case 5:
4914                 return "SYSASSERT";
4915         case 6:
4916                 return "FATAL_ERROR";
4917         }
4918
4919         return "UNKNOWN";
4920 }
4921
4922 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4923 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4924
4925 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4926 {
4927         u32 data2, line;
4928         u32 desc, time, count, base, data1;
4929         u32 blink1, blink2, ilink1, ilink2;
4930         int rc;
4931
4932         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4933
4934         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4935                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4936                 return;
4937         }
4938
4939         rc = iwl4965_grab_nic_access(priv);
4940         if (rc) {
4941                 IWL_WARNING("Can not read from adapter at this time.\n");
4942                 return;
4943         }
4944
4945         count = iwl4965_read_targ_mem(priv, base);
4946
4947         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4948                 IWL_ERROR("Start IWL Error Log Dump:\n");
4949                 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4950                           priv->status, priv->config, count);
4951         }
4952
4953         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4954         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4955         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4956         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4957         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4958         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4959         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4960         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4961         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4962
4963         IWL_ERROR("Desc               Time       "
4964                   "data1      data2      line\n");
4965         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4966                   desc_lookup(desc), desc, time, data1, data2, line);
4967         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4968         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4969                   ilink1, ilink2);
4970
4971         iwl4965_release_nic_access(priv);
4972 }
4973
4974 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4975
4976 /**
4977  * iwl4965_print_event_log - Dump error event log to syslog
4978  *
4979  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4980  */
4981 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4982                                 u32 num_events, u32 mode)
4983 {
4984         u32 i;
4985         u32 base;       /* SRAM byte address of event log header */
4986         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4987         u32 ptr;        /* SRAM byte address of log data */
4988         u32 ev, time, data; /* event log data */
4989
4990         if (num_events == 0)
4991                 return;
4992
4993         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4994
4995         if (mode == 0)
4996                 event_size = 2 * sizeof(u32);
4997         else
4998                 event_size = 3 * sizeof(u32);
4999
5000         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
5001
5002         /* "time" is actually "data" for mode 0 (no timestamp).
5003          * place event id # at far right for easier visual parsing. */
5004         for (i = 0; i < num_events; i++) {
5005                 ev = iwl4965_read_targ_mem(priv, ptr);
5006                 ptr += sizeof(u32);
5007                 time = iwl4965_read_targ_mem(priv, ptr);
5008                 ptr += sizeof(u32);
5009                 if (mode == 0)
5010                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
5011                 else {
5012                         data = iwl4965_read_targ_mem(priv, ptr);
5013                         ptr += sizeof(u32);
5014                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
5015                 }
5016         }
5017 }
5018
5019 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
5020 {
5021         int rc;
5022         u32 base;       /* SRAM byte address of event log header */
5023         u32 capacity;   /* event log capacity in # entries */
5024         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
5025         u32 num_wraps;  /* # times uCode wrapped to top of log */
5026         u32 next_entry; /* index of next entry to be written by uCode */
5027         u32 size;       /* # entries that we'll print */
5028
5029         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
5030         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
5031                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
5032                 return;
5033         }
5034
5035         rc = iwl4965_grab_nic_access(priv);
5036         if (rc) {
5037                 IWL_WARNING("Can not read from adapter at this time.\n");
5038                 return;
5039         }
5040
5041         /* event log header */
5042         capacity = iwl4965_read_targ_mem(priv, base);
5043         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
5044         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
5045         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
5046
5047         size = num_wraps ? capacity : next_entry;
5048
5049         /* bail out if nothing in log */
5050         if (size == 0) {
5051                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
5052                 iwl4965_release_nic_access(priv);
5053                 return;
5054         }
5055
5056         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
5057                   size, num_wraps);
5058
5059         /* if uCode has wrapped back to top of log, start at the oldest entry,
5060          * i.e the next one that uCode would fill. */
5061         if (num_wraps)
5062                 iwl4965_print_event_log(priv, next_entry,
5063                                     capacity - next_entry, mode);
5064
5065         /* (then/else) start at top of log */
5066         iwl4965_print_event_log(priv, 0, next_entry, mode);
5067
5068         iwl4965_release_nic_access(priv);
5069 }
5070
5071 /**
5072  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
5073  */
5074 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
5075 {
5076         /* Set the FW error flag -- cleared on iwl4965_down */
5077         set_bit(STATUS_FW_ERROR, &priv->status);
5078
5079         /* Cancel currently queued command. */
5080         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
5081
5082 #ifdef CONFIG_IWL4965_DEBUG
5083         if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
5084                 iwl4965_dump_nic_error_log(priv);
5085                 iwl4965_dump_nic_event_log(priv);
5086                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
5087         }
5088 #endif
5089
5090         wake_up_interruptible(&priv->wait_command_queue);
5091
5092         /* Keep the restart process from trying to send host
5093          * commands by clearing the INIT status bit */
5094         clear_bit(STATUS_READY, &priv->status);
5095
5096         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5097                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
5098                           "Restarting adapter due to uCode error.\n");
5099
5100                 if (iwl4965_is_associated(priv)) {
5101                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
5102                                sizeof(priv->recovery_rxon));
5103                         priv->error_recovering = 1;
5104                 }
5105                 queue_work(priv->workqueue, &priv->restart);
5106         }
5107 }
5108
5109 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
5110 {
5111         unsigned long flags;
5112
5113         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
5114                sizeof(priv->staging_rxon));
5115         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5116         iwl4965_commit_rxon(priv);
5117
5118         iwl4965_rxon_add_station(priv, priv->bssid, 1);
5119
5120         spin_lock_irqsave(&priv->lock, flags);
5121         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
5122         priv->error_recovering = 0;
5123         spin_unlock_irqrestore(&priv->lock, flags);
5124 }
5125
5126 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
5127 {
5128         u32 inta, handled = 0;
5129         u32 inta_fh;
5130         unsigned long flags;
5131 #ifdef CONFIG_IWL4965_DEBUG
5132         u32 inta_mask;
5133 #endif
5134
5135         spin_lock_irqsave(&priv->lock, flags);
5136
5137         /* Ack/clear/reset pending uCode interrupts.
5138          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
5139          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
5140         inta = iwl4965_read32(priv, CSR_INT);
5141         iwl4965_write32(priv, CSR_INT, inta);
5142
5143         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
5144          * Any new interrupts that happen after this, either while we're
5145          * in this tasklet, or later, will show up in next ISR/tasklet. */
5146         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5147         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5148
5149 #ifdef CONFIG_IWL4965_DEBUG
5150         if (iwl4965_debug_level & IWL_DL_ISR) {
5151                 /* just for debug */
5152                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5153                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5154                               inta, inta_mask, inta_fh);
5155         }
5156 #endif
5157
5158         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5159          * atomic, make sure that inta covers all the interrupts that
5160          * we've discovered, even if FH interrupt came in just after
5161          * reading CSR_INT. */
5162         if (inta_fh & CSR_FH_INT_RX_MASK)
5163                 inta |= CSR_INT_BIT_FH_RX;
5164         if (inta_fh & CSR_FH_INT_TX_MASK)
5165                 inta |= CSR_INT_BIT_FH_TX;
5166
5167         /* Now service all interrupt bits discovered above. */
5168         if (inta & CSR_INT_BIT_HW_ERR) {
5169                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
5170
5171                 /* Tell the device to stop sending interrupts */
5172                 iwl4965_disable_interrupts(priv);
5173
5174                 iwl4965_irq_handle_error(priv);
5175
5176                 handled |= CSR_INT_BIT_HW_ERR;
5177
5178                 spin_unlock_irqrestore(&priv->lock, flags);
5179
5180                 return;
5181         }
5182
5183 #ifdef CONFIG_IWL4965_DEBUG
5184         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5185                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5186                 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5187                         IWL_DEBUG_ISR("Microcode started or stopped.\n");
5188
5189                 /* Alive notification via Rx interrupt will do the real work */
5190                 if (inta & CSR_INT_BIT_ALIVE)
5191                         IWL_DEBUG_ISR("Alive interrupt\n");
5192         }
5193 #endif
5194         /* Safely ignore these bits for debug checks below */
5195         inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5196
5197         /* HW RF KILL switch toggled */
5198         if (inta & CSR_INT_BIT_RF_KILL) {
5199                 int hw_rf_kill = 0;
5200                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5201                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5202                         hw_rf_kill = 1;
5203
5204                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5205                                 "RF_KILL bit toggled to %s.\n",
5206                                 hw_rf_kill ? "disable radio":"enable radio");
5207
5208                 /* Queue restart only if RF_KILL switch was set to "kill"
5209                  *   when we loaded driver, and is now set to "enable".
5210                  * After we're Alive, RF_KILL gets handled by
5211                  *   iwl_rx_card_state_notif() */
5212                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5213                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
5214                         queue_work(priv->workqueue, &priv->restart);
5215                 }
5216
5217                 handled |= CSR_INT_BIT_RF_KILL;
5218         }
5219
5220         /* Chip got too hot and stopped itself */
5221         if (inta & CSR_INT_BIT_CT_KILL) {
5222                 IWL_ERROR("Microcode CT kill error detected.\n");
5223                 handled |= CSR_INT_BIT_CT_KILL;
5224         }
5225
5226         /* Error detected by uCode */
5227         if (inta & CSR_INT_BIT_SW_ERR) {
5228                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
5229                           inta);
5230                 iwl4965_irq_handle_error(priv);
5231                 handled |= CSR_INT_BIT_SW_ERR;
5232         }
5233
5234         /* uCode wakes up after power-down sleep */
5235         if (inta & CSR_INT_BIT_WAKEUP) {
5236                 IWL_DEBUG_ISR("Wakeup interrupt\n");
5237                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5238                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5239                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5240                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5241                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5242                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5243                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5244
5245                 handled |= CSR_INT_BIT_WAKEUP;
5246         }
5247
5248         /* All uCode command responses, including Tx command responses,
5249          * Rx "responses" (frame-received notification), and other
5250          * notifications from uCode come through here*/
5251         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5252                 iwl4965_rx_handle(priv);
5253                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5254         }
5255
5256         if (inta & CSR_INT_BIT_FH_TX) {
5257                 IWL_DEBUG_ISR("Tx interrupt\n");
5258                 handled |= CSR_INT_BIT_FH_TX;
5259         }
5260
5261         if (inta & ~handled)
5262                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5263
5264         if (inta & ~CSR_INI_SET_MASK) {
5265                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5266                          inta & ~CSR_INI_SET_MASK);
5267                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
5268         }
5269
5270         /* Re-enable all interrupts */
5271         iwl4965_enable_interrupts(priv);
5272
5273 #ifdef CONFIG_IWL4965_DEBUG
5274         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5275                 inta = iwl4965_read32(priv, CSR_INT);
5276                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5277                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5278                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5279                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5280         }
5281 #endif
5282         spin_unlock_irqrestore(&priv->lock, flags);
5283 }
5284
5285 static irqreturn_t iwl4965_isr(int irq, void *data)
5286 {
5287         struct iwl4965_priv *priv = data;
5288         u32 inta, inta_mask;
5289         u32 inta_fh;
5290         if (!priv)
5291                 return IRQ_NONE;
5292
5293         spin_lock(&priv->lock);
5294
5295         /* Disable (but don't clear!) interrupts here to avoid
5296          *    back-to-back ISRs and sporadic interrupts from our NIC.
5297          * If we have something to service, the tasklet will re-enable ints.
5298          * If we *don't* have something, we'll re-enable before leaving here. */
5299         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
5300         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5301
5302         /* Discover which interrupts are active/pending */
5303         inta = iwl4965_read32(priv, CSR_INT);
5304         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5305
5306         /* Ignore interrupt if there's nothing in NIC to service.
5307          * This may be due to IRQ shared with another device,
5308          * or due to sporadic interrupts thrown from our NIC. */
5309         if (!inta && !inta_fh) {
5310                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5311                 goto none;
5312         }
5313
5314         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5315                 /* Hardware disappeared. It might have already raised
5316                  * an interrupt */
5317                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5318                 goto unplugged;
5319         }
5320
5321         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5322                       inta, inta_mask, inta_fh);
5323
5324         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5325         tasklet_schedule(&priv->irq_tasklet);
5326
5327  unplugged:
5328         spin_unlock(&priv->lock);
5329         return IRQ_HANDLED;
5330
5331  none:
5332         /* re-enable interrupts here since we don't have anything to service. */
5333         iwl4965_enable_interrupts(priv);
5334         spin_unlock(&priv->lock);
5335         return IRQ_NONE;
5336 }
5337
5338 /************************** EEPROM BANDS ****************************
5339  *
5340  * The iwl4965_eeprom_band definitions below provide the mapping from the
5341  * EEPROM contents to the specific channel number supported for each
5342  * band.
5343  *
5344  * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5345  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5346  * The specific geography and calibration information for that channel
5347  * is contained in the eeprom map itself.
5348  *
5349  * During init, we copy the eeprom information and channel map
5350  * information into priv->channel_info_24/52 and priv->channel_map_24/52
5351  *
5352  * channel_map_24/52 provides the index in the channel_info array for a
5353  * given channel.  We have to have two separate maps as there is channel
5354  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5355  * band_2
5356  *
5357  * A value of 0xff stored in the channel_map indicates that the channel
5358  * is not supported by the hardware at all.
5359  *
5360  * A value of 0xfe in the channel_map indicates that the channel is not
5361  * valid for Tx with the current hardware.  This means that
5362  * while the system can tune and receive on a given channel, it may not
5363  * be able to associate or transmit any frames on that
5364  * channel.  There is no corresponding channel information for that
5365  * entry.
5366  *
5367  *********************************************************************/
5368
5369 /* 2.4 GHz */
5370 static const u8 iwl4965_eeprom_band_1[14] = {
5371         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5372 };
5373
5374 /* 5.2 GHz bands */
5375 static const u8 iwl4965_eeprom_band_2[] = {     /* 4915-5080MHz */
5376         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5377 };
5378
5379 static const u8 iwl4965_eeprom_band_3[] = {     /* 5170-5320MHz */
5380         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5381 };
5382
5383 static const u8 iwl4965_eeprom_band_4[] = {     /* 5500-5700MHz */
5384         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5385 };
5386
5387 static const u8 iwl4965_eeprom_band_5[] = {     /* 5725-5825MHz */
5388         145, 149, 153, 157, 161, 165
5389 };
5390
5391 static u8 iwl4965_eeprom_band_6[] = {       /* 2.4 FAT channel */
5392         1, 2, 3, 4, 5, 6, 7
5393 };
5394
5395 static u8 iwl4965_eeprom_band_7[] = {       /* 5.2 FAT channel */
5396         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5397 };
5398
5399 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5400                                     int band,
5401                                     int *eeprom_ch_count,
5402                                     const struct iwl4965_eeprom_channel
5403                                     **eeprom_ch_info,
5404                                     const u8 **eeprom_ch_index)
5405 {
5406         switch (band) {
5407         case 1:         /* 2.4GHz band */
5408                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5409                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5410                 *eeprom_ch_index = iwl4965_eeprom_band_1;
5411                 break;
5412         case 2:         /* 4.9GHz band */
5413                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5414                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5415                 *eeprom_ch_index = iwl4965_eeprom_band_2;
5416                 break;
5417         case 3:         /* 5.2GHz band */
5418                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5419                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5420                 *eeprom_ch_index = iwl4965_eeprom_band_3;
5421                 break;
5422         case 4:         /* 5.5GHz band */
5423                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5424                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5425                 *eeprom_ch_index = iwl4965_eeprom_band_4;
5426                 break;
5427         case 5:         /* 5.7GHz band */
5428                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5429                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5430                 *eeprom_ch_index = iwl4965_eeprom_band_5;
5431                 break;
5432         case 6:         /* 2.4GHz FAT channels */
5433                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5434                 *eeprom_ch_info = priv->eeprom.band_24_channels;
5435                 *eeprom_ch_index = iwl4965_eeprom_band_6;
5436                 break;
5437         case 7:         /* 5 GHz FAT channels */
5438                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5439                 *eeprom_ch_info = priv->eeprom.band_52_channels;
5440                 *eeprom_ch_index = iwl4965_eeprom_band_7;
5441                 break;
5442         default:
5443                 BUG();
5444                 return;
5445         }
5446 }
5447
5448 /**
5449  * iwl4965_get_channel_info - Find driver's private channel info
5450  *
5451  * Based on band and channel number.
5452  */
5453 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5454                                                     int phymode, u16 channel)
5455 {
5456         int i;
5457
5458         switch (phymode) {
5459         case MODE_IEEE80211A:
5460                 for (i = 14; i < priv->channel_count; i++) {
5461                         if (priv->channel_info[i].channel == channel)
5462                                 return &priv->channel_info[i];
5463                 }
5464                 break;
5465
5466         case MODE_IEEE80211B:
5467         case MODE_IEEE80211G:
5468                 if (channel >= 1 && channel <= 14)
5469                         return &priv->channel_info[channel - 1];
5470                 break;
5471
5472         }
5473
5474         return NULL;
5475 }
5476
5477 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5478                             ? # x " " : "")
5479
5480 /**
5481  * iwl4965_init_channel_map - Set up driver's info for all possible channels
5482  */
5483 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5484 {
5485         int eeprom_ch_count = 0;
5486         const u8 *eeprom_ch_index = NULL;
5487         const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5488         int band, ch;
5489         struct iwl4965_channel_info *ch_info;
5490
5491         if (priv->channel_count) {
5492                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5493                 return 0;
5494         }
5495
5496         if (priv->eeprom.version < 0x2f) {
5497                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5498                             priv->eeprom.version);
5499                 return -EINVAL;
5500         }
5501
5502         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5503
5504         priv->channel_count =
5505             ARRAY_SIZE(iwl4965_eeprom_band_1) +
5506             ARRAY_SIZE(iwl4965_eeprom_band_2) +
5507             ARRAY_SIZE(iwl4965_eeprom_band_3) +
5508             ARRAY_SIZE(iwl4965_eeprom_band_4) +
5509             ARRAY_SIZE(iwl4965_eeprom_band_5);
5510
5511         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5512
5513         priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5514                                      priv->channel_count, GFP_KERNEL);
5515         if (!priv->channel_info) {
5516                 IWL_ERROR("Could not allocate channel_info\n");
5517                 priv->channel_count = 0;
5518                 return -ENOMEM;
5519         }
5520
5521         ch_info = priv->channel_info;
5522
5523         /* Loop through the 5 EEPROM bands adding them in order to the
5524          * channel map we maintain (that contains additional information than
5525          * what just in the EEPROM) */
5526         for (band = 1; band <= 5; band++) {
5527
5528                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5529                                         &eeprom_ch_info, &eeprom_ch_index);
5530
5531                 /* Loop through each band adding each of the channels */
5532                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5533                         ch_info->channel = eeprom_ch_index[ch];
5534                         ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5535                             MODE_IEEE80211A;
5536
5537                         /* permanently store EEPROM's channel regulatory flags
5538                          *   and max power in channel info database. */
5539                         ch_info->eeprom = eeprom_ch_info[ch];
5540
5541                         /* Copy the run-time flags so they are there even on
5542                          * invalid channels */
5543                         ch_info->flags = eeprom_ch_info[ch].flags;
5544
5545                         if (!(is_channel_valid(ch_info))) {
5546                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5547                                                "No traffic\n",
5548                                                ch_info->channel,
5549                                                ch_info->flags,
5550                                                is_channel_a_band(ch_info) ?
5551                                                "5.2" : "2.4");
5552                                 ch_info++;
5553                                 continue;
5554                         }
5555
5556                         /* Initialize regulatory-based run-time data */
5557                         ch_info->max_power_avg = ch_info->curr_txpow =
5558                             eeprom_ch_info[ch].max_power_avg;
5559                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5560                         ch_info->min_power = 0;
5561
5562                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5563                                        " %ddBm): Ad-Hoc %ssupported\n",
5564                                        ch_info->channel,
5565                                        is_channel_a_band(ch_info) ?
5566                                        "5.2" : "2.4",
5567                                        CHECK_AND_PRINT(IBSS),
5568                                        CHECK_AND_PRINT(ACTIVE),
5569                                        CHECK_AND_PRINT(RADAR),
5570                                        CHECK_AND_PRINT(WIDE),
5571                                        CHECK_AND_PRINT(NARROW),
5572                                        CHECK_AND_PRINT(DFS),
5573                                        eeprom_ch_info[ch].flags,
5574                                        eeprom_ch_info[ch].max_power_avg,
5575                                        ((eeprom_ch_info[ch].
5576                                          flags & EEPROM_CHANNEL_IBSS)
5577                                         && !(eeprom_ch_info[ch].
5578                                              flags & EEPROM_CHANNEL_RADAR))
5579                                        ? "" : "not ");
5580
5581                         /* Set the user_txpower_limit to the highest power
5582                          * supported by any channel */
5583                         if (eeprom_ch_info[ch].max_power_avg >
5584                             priv->user_txpower_limit)
5585                                 priv->user_txpower_limit =
5586                                     eeprom_ch_info[ch].max_power_avg;
5587
5588                         ch_info++;
5589                 }
5590         }
5591
5592         /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5593         for (band = 6; band <= 7; band++) {
5594                 int phymode;
5595                 u8 fat_extension_chan;
5596
5597                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5598                                         &eeprom_ch_info, &eeprom_ch_index);
5599
5600                 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5601                 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5602
5603                 /* Loop through each band adding each of the channels */
5604                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5605
5606                         if ((band == 6) &&
5607                             ((eeprom_ch_index[ch] == 5) ||
5608                             (eeprom_ch_index[ch] == 6) ||
5609                             (eeprom_ch_index[ch] == 7)))
5610                                fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5611                         else
5612                                 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5613
5614                         /* Set up driver's info for lower half */
5615                         iwl4965_set_fat_chan_info(priv, phymode,
5616                                                   eeprom_ch_index[ch],
5617                                                   &(eeprom_ch_info[ch]),
5618                                                   fat_extension_chan);
5619
5620                         /* Set up driver's info for upper half */
5621                         iwl4965_set_fat_chan_info(priv, phymode,
5622                                                   (eeprom_ch_index[ch] + 4),
5623                                                   &(eeprom_ch_info[ch]),
5624                                                   HT_IE_EXT_CHANNEL_BELOW);
5625                 }
5626         }
5627
5628         return 0;
5629 }
5630
5631 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5632  * sending probe req.  This should be set long enough to hear probe responses
5633  * from more than one AP.  */
5634 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5635 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5636
5637 /* For faster active scanning, scan will move to the next channel if fewer than
5638  * PLCP_QUIET_THRESH packets are heard on this channel within
5639  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5640  * time if it's a quiet channel (nothing responded to our probe, and there's
5641  * no other traffic).
5642  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5643 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5644 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5645
5646 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5647  * Must be set longer than active dwell time.
5648  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5649 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5650 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5651 #define IWL_PASSIVE_DWELL_BASE      (100)
5652 #define IWL_CHANNEL_TUNE_TIME       5
5653
5654 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv, int phymode)
5655 {
5656         if (phymode == MODE_IEEE80211A)
5657                 return IWL_ACTIVE_DWELL_TIME_52;
5658         else
5659                 return IWL_ACTIVE_DWELL_TIME_24;
5660 }
5661
5662 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv, int phymode)
5663 {
5664         u16 active = iwl4965_get_active_dwell_time(priv, phymode);
5665         u16 passive = (phymode != MODE_IEEE80211A) ?
5666             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5667             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5668
5669         if (iwl4965_is_associated(priv)) {
5670                 /* If we're associated, we clamp the maximum passive
5671                  * dwell time to be 98% of the beacon interval (minus
5672                  * 2 * channel tune time) */
5673                 passive = priv->beacon_int;
5674                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5675                         passive = IWL_PASSIVE_DWELL_BASE;
5676                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5677         }
5678
5679         if (passive <= active)
5680                 passive = active + 1;
5681
5682         return passive;
5683 }
5684
5685 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv, int phymode,
5686                                      u8 is_active, u8 direct_mask,
5687                                      struct iwl4965_scan_channel *scan_ch)
5688 {
5689         const struct ieee80211_channel *channels = NULL;
5690         const struct ieee80211_hw_mode *hw_mode;
5691         const struct iwl4965_channel_info *ch_info;
5692         u16 passive_dwell = 0;
5693         u16 active_dwell = 0;
5694         int added, i;
5695
5696         hw_mode = iwl4965_get_hw_mode(priv, phymode);
5697         if (!hw_mode)
5698                 return 0;
5699
5700         channels = hw_mode->channels;
5701
5702         active_dwell = iwl4965_get_active_dwell_time(priv, phymode);
5703         passive_dwell = iwl4965_get_passive_dwell_time(priv, phymode);
5704
5705         for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5706                 if (channels[i].chan ==
5707                     le16_to_cpu(priv->active_rxon.channel)) {
5708                         if (iwl4965_is_associated(priv)) {
5709                                 IWL_DEBUG_SCAN
5710                                     ("Skipping current channel %d\n",
5711                                      le16_to_cpu(priv->active_rxon.channel));
5712                                 continue;
5713                         }
5714                 } else if (priv->only_active_channel)
5715                         continue;
5716
5717                 scan_ch->channel = channels[i].chan;
5718
5719                 ch_info = iwl4965_get_channel_info(priv, phymode,
5720                                          scan_ch->channel);
5721                 if (!is_channel_valid(ch_info)) {
5722                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5723                                        scan_ch->channel);
5724                         continue;
5725                 }
5726
5727                 if (!is_active || is_channel_passive(ch_info) ||
5728                     !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5729                         scan_ch->type = 0;      /* passive */
5730                 else
5731                         scan_ch->type = 1;      /* active */
5732
5733                 if (scan_ch->type & 1)
5734                         scan_ch->type |= (direct_mask << 1);
5735
5736                 if (is_channel_narrow(ch_info))
5737                         scan_ch->type |= (1 << 7);
5738
5739                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5740                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5741
5742                 /* Set txpower levels to defaults */
5743                 scan_ch->tpc.dsp_atten = 110;
5744                 /* scan_pwr_info->tpc.dsp_atten; */
5745
5746                 /*scan_pwr_info->tpc.tx_gain; */
5747                 if (phymode == MODE_IEEE80211A)
5748                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5749                 else {
5750                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5751                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5752                          * power level:
5753                          * scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5754                          */
5755                 }
5756
5757                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5758                                scan_ch->channel,
5759                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5760                                (scan_ch->type & 1) ?
5761                                active_dwell : passive_dwell);
5762
5763                 scan_ch++;
5764                 added++;
5765         }
5766
5767         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5768         return added;
5769 }
5770
5771 static void iwl4965_reset_channel_flag(struct iwl4965_priv *priv)
5772 {
5773         int i, j;
5774         for (i = 0; i < 3; i++) {
5775                 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5776                 for (j = 0; j < hw_mode->num_channels; j++)
5777                         hw_mode->channels[j].flag = hw_mode->channels[j].val;
5778         }
5779 }
5780
5781 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5782                               struct ieee80211_rate *rates)
5783 {
5784         int i;
5785
5786         for (i = 0; i < IWL_RATE_COUNT; i++) {
5787                 rates[i].rate = iwl4965_rates[i].ieee * 5;
5788                 rates[i].val = i; /* Rate scaling will work on indexes */
5789                 rates[i].val2 = i;
5790                 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5791                 /* Only OFDM have the bits-per-symbol set */
5792                 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5793                         rates[i].flags |= IEEE80211_RATE_OFDM;
5794                 else {
5795                         /*
5796                          * If CCK 1M then set rate flag to CCK else CCK_2
5797                          * which is CCK | PREAMBLE2
5798                          */
5799                         rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5800                                 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5801                 }
5802
5803                 /* Set up which ones are basic rates... */
5804                 if (IWL_BASIC_RATES_MASK & (1 << i))
5805                         rates[i].flags |= IEEE80211_RATE_BASIC;
5806         }
5807 }
5808
5809 /**
5810  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5811  */
5812 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5813 {
5814         struct iwl4965_channel_info *ch;
5815         struct ieee80211_hw_mode *modes;
5816         struct ieee80211_channel *channels;
5817         struct ieee80211_channel *geo_ch;
5818         struct ieee80211_rate *rates;
5819         int i = 0;
5820         enum {
5821                 A = 0,
5822                 B = 1,
5823                 G = 2,
5824                 A_11N = 3,
5825                 G_11N = 4,
5826         };
5827         int mode_count = 5;
5828
5829         if (priv->modes) {
5830                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5831                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5832                 return 0;
5833         }
5834
5835         modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5836                         GFP_KERNEL);
5837         if (!modes)
5838                 return -ENOMEM;
5839
5840         channels = kzalloc(sizeof(struct ieee80211_channel) *
5841                            priv->channel_count, GFP_KERNEL);
5842         if (!channels) {
5843                 kfree(modes);
5844                 return -ENOMEM;
5845         }
5846
5847         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5848                         GFP_KERNEL);
5849         if (!rates) {
5850                 kfree(modes);
5851                 kfree(channels);
5852                 return -ENOMEM;
5853         }
5854
5855         /* 0 = 802.11a
5856          * 1 = 802.11b
5857          * 2 = 802.11g
5858          */
5859
5860         /* 5.2GHz channels start after the 2.4GHz channels */
5861         modes[A].mode = MODE_IEEE80211A;
5862         modes[A].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5863         modes[A].rates = rates;
5864         modes[A].num_rates = 8; /* just OFDM */
5865         modes[A].rates = &rates[4];
5866         modes[A].num_channels = 0;
5867
5868         modes[B].mode = MODE_IEEE80211B;
5869         modes[B].channels = channels;
5870         modes[B].rates = rates;
5871         modes[B].num_rates = 4; /* just CCK */
5872         modes[B].num_channels = 0;
5873
5874         modes[G].mode = MODE_IEEE80211G;
5875         modes[G].channels = channels;
5876         modes[G].rates = rates;
5877         modes[G].num_rates = 12;        /* OFDM & CCK */
5878         modes[G].num_channels = 0;
5879
5880         modes[G_11N].mode = MODE_IEEE80211G;
5881         modes[G_11N].channels = channels;
5882         modes[G_11N].num_rates = 13;        /* OFDM & CCK */
5883         modes[G_11N].rates = rates;
5884         modes[G_11N].num_channels = 0;
5885
5886         modes[A_11N].mode = MODE_IEEE80211A;
5887         modes[A_11N].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5888         modes[A_11N].rates = &rates[4];
5889         modes[A_11N].num_rates = 9; /* just OFDM */
5890         modes[A_11N].num_channels = 0;
5891
5892         priv->ieee_channels = channels;
5893         priv->ieee_rates = rates;
5894
5895         iwl4965_init_hw_rates(priv, rates);
5896
5897         for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5898                 ch = &priv->channel_info[i];
5899
5900                 if (!is_channel_valid(ch)) {
5901                         IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5902                                     "skipping.\n",
5903                                     ch->channel, is_channel_a_band(ch) ?
5904                                     "5.2" : "2.4");
5905                         continue;
5906                 }
5907
5908                 if (is_channel_a_band(ch)) {
5909                         geo_ch = &modes[A].channels[modes[A].num_channels++];
5910                         modes[A_11N].num_channels++;
5911                 } else {
5912                         geo_ch = &modes[B].channels[modes[B].num_channels++];
5913                         modes[G].num_channels++;
5914                         modes[G_11N].num_channels++;
5915                 }
5916
5917                 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5918                 geo_ch->chan = ch->channel;
5919                 geo_ch->power_level = ch->max_power_avg;
5920                 geo_ch->antenna_max = 0xff;
5921
5922                 if (is_channel_valid(ch)) {
5923                         geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5924                         if (ch->flags & EEPROM_CHANNEL_IBSS)
5925                                 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5926
5927                         if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5928                                 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5929
5930                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5931                                 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5932
5933                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5934                                 priv->max_channel_txpower_limit =
5935                                     ch->max_power_avg;
5936                 }
5937
5938                 geo_ch->val = geo_ch->flag;
5939         }
5940
5941         if ((modes[A].num_channels == 0) && priv->is_abg) {
5942                 printk(KERN_INFO DRV_NAME
5943                        ": Incorrectly detected BG card as ABG.  Please send "
5944                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5945                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5946                 priv->is_abg = 0;
5947         }
5948
5949         printk(KERN_INFO DRV_NAME
5950                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5951                modes[G].num_channels, modes[A].num_channels);
5952
5953         /*
5954          * NOTE:  We register these in preference of order -- the
5955          * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5956          * a phymode based on rates or AP capabilities but seems to
5957          * configure it purely on if the channel being configured
5958          * is supported by a mode -- and the first match is taken
5959          */
5960
5961         if (modes[G].num_channels)
5962                 ieee80211_register_hwmode(priv->hw, &modes[G]);
5963         if (modes[B].num_channels)
5964                 ieee80211_register_hwmode(priv->hw, &modes[B]);
5965         if (modes[A].num_channels)
5966                 ieee80211_register_hwmode(priv->hw, &modes[A]);
5967
5968         priv->modes = modes;
5969         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5970
5971         return 0;
5972 }
5973
5974 /******************************************************************************
5975  *
5976  * uCode download functions
5977  *
5978  ******************************************************************************/
5979
5980 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5981 {
5982         if (priv->ucode_code.v_addr != NULL) {
5983                 pci_free_consistent(priv->pci_dev,
5984                                     priv->ucode_code.len,
5985                                     priv->ucode_code.v_addr,
5986                                     priv->ucode_code.p_addr);
5987                 priv->ucode_code.v_addr = NULL;
5988         }
5989         if (priv->ucode_data.v_addr != NULL) {
5990                 pci_free_consistent(priv->pci_dev,
5991                                     priv->ucode_data.len,
5992                                     priv->ucode_data.v_addr,
5993                                     priv->ucode_data.p_addr);
5994                 priv->ucode_data.v_addr = NULL;
5995         }
5996         if (priv->ucode_data_backup.v_addr != NULL) {
5997                 pci_free_consistent(priv->pci_dev,
5998                                     priv->ucode_data_backup.len,
5999                                     priv->ucode_data_backup.v_addr,
6000                                     priv->ucode_data_backup.p_addr);
6001                 priv->ucode_data_backup.v_addr = NULL;
6002         }
6003         if (priv->ucode_init.v_addr != NULL) {
6004                 pci_free_consistent(priv->pci_dev,
6005                                     priv->ucode_init.len,
6006                                     priv->ucode_init.v_addr,
6007                                     priv->ucode_init.p_addr);
6008                 priv->ucode_init.v_addr = NULL;
6009         }
6010         if (priv->ucode_init_data.v_addr != NULL) {
6011                 pci_free_consistent(priv->pci_dev,
6012                                     priv->ucode_init_data.len,
6013                                     priv->ucode_init_data.v_addr,
6014                                     priv->ucode_init_data.p_addr);
6015                 priv->ucode_init_data.v_addr = NULL;
6016         }
6017         if (priv->ucode_boot.v_addr != NULL) {
6018                 pci_free_consistent(priv->pci_dev,
6019                                     priv->ucode_boot.len,
6020                                     priv->ucode_boot.v_addr,
6021                                     priv->ucode_boot.p_addr);
6022                 priv->ucode_boot.v_addr = NULL;
6023         }
6024 }
6025
6026 /**
6027  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
6028  *     looking at all data.
6029  */
6030 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 * image,
6031                                  u32 len)
6032 {
6033         u32 val;
6034         u32 save_len = len;
6035         int rc = 0;
6036         u32 errcnt;
6037
6038         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6039
6040         rc = iwl4965_grab_nic_access(priv);
6041         if (rc)
6042                 return rc;
6043
6044         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
6045
6046         errcnt = 0;
6047         for (; len > 0; len -= sizeof(u32), image++) {
6048                 /* read data comes through single port, auto-incr addr */
6049                 /* NOTE: Use the debugless read so we don't flood kernel log
6050                  * if IWL_DL_IO is set */
6051                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6052                 if (val != le32_to_cpu(*image)) {
6053                         IWL_ERROR("uCode INST section is invalid at "
6054                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
6055                                   save_len - len, val, le32_to_cpu(*image));
6056                         rc = -EIO;
6057                         errcnt++;
6058                         if (errcnt >= 20)
6059                                 break;
6060                 }
6061         }
6062
6063         iwl4965_release_nic_access(priv);
6064
6065         if (!errcnt)
6066                 IWL_DEBUG_INFO
6067                     ("ucode image in INSTRUCTION memory is good\n");
6068
6069         return rc;
6070 }
6071
6072
6073 /**
6074  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
6075  *   using sample data 100 bytes apart.  If these sample points are good,
6076  *   it's a pretty good bet that everything between them is good, too.
6077  */
6078 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
6079 {
6080         u32 val;
6081         int rc = 0;
6082         u32 errcnt = 0;
6083         u32 i;
6084
6085         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6086
6087         rc = iwl4965_grab_nic_access(priv);
6088         if (rc)
6089                 return rc;
6090
6091         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
6092                 /* read data comes through single port, auto-incr addr */
6093                 /* NOTE: Use the debugless read so we don't flood kernel log
6094                  * if IWL_DL_IO is set */
6095                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
6096                         i + RTC_INST_LOWER_BOUND);
6097                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6098                 if (val != le32_to_cpu(*image)) {
6099 #if 0 /* Enable this if you want to see details */
6100                         IWL_ERROR("uCode INST section is invalid at "
6101                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
6102                                   i, val, *image);
6103 #endif
6104                         rc = -EIO;
6105                         errcnt++;
6106                         if (errcnt >= 3)
6107                                 break;
6108                 }
6109         }
6110
6111         iwl4965_release_nic_access(priv);
6112
6113         return rc;
6114 }
6115
6116
6117 /**
6118  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
6119  *    and verify its contents
6120  */
6121 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
6122 {
6123         __le32 *image;
6124         u32 len;
6125         int rc = 0;
6126
6127         /* Try bootstrap */
6128         image = (__le32 *)priv->ucode_boot.v_addr;
6129         len = priv->ucode_boot.len;
6130         rc = iwl4965_verify_inst_sparse(priv, image, len);
6131         if (rc == 0) {
6132                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
6133                 return 0;
6134         }
6135
6136         /* Try initialize */
6137         image = (__le32 *)priv->ucode_init.v_addr;
6138         len = priv->ucode_init.len;
6139         rc = iwl4965_verify_inst_sparse(priv, image, len);
6140         if (rc == 0) {
6141                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
6142                 return 0;
6143         }
6144
6145         /* Try runtime/protocol */
6146         image = (__le32 *)priv->ucode_code.v_addr;
6147         len = priv->ucode_code.len;
6148         rc = iwl4965_verify_inst_sparse(priv, image, len);
6149         if (rc == 0) {
6150                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
6151                 return 0;
6152         }
6153
6154         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
6155
6156         /* Since nothing seems to match, show first several data entries in
6157          * instruction SRAM, so maybe visual inspection will give a clue.
6158          * Selection of bootstrap image (vs. other images) is arbitrary. */
6159         image = (__le32 *)priv->ucode_boot.v_addr;
6160         len = priv->ucode_boot.len;
6161         rc = iwl4965_verify_inst_full(priv, image, len);
6162
6163         return rc;
6164 }
6165
6166
6167 /* check contents of special bootstrap uCode SRAM */
6168 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
6169 {
6170         __le32 *image = priv->ucode_boot.v_addr;
6171         u32 len = priv->ucode_boot.len;
6172         u32 reg;
6173         u32 val;
6174
6175         IWL_DEBUG_INFO("Begin verify bsm\n");
6176
6177         /* verify BSM SRAM contents */
6178         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6179         for (reg = BSM_SRAM_LOWER_BOUND;
6180              reg < BSM_SRAM_LOWER_BOUND + len;
6181              reg += sizeof(u32), image ++) {
6182                 val = iwl4965_read_prph(priv, reg);
6183                 if (val != le32_to_cpu(*image)) {
6184                         IWL_ERROR("BSM uCode verification failed at "
6185                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6186                                   BSM_SRAM_LOWER_BOUND,
6187                                   reg - BSM_SRAM_LOWER_BOUND, len,
6188                                   val, le32_to_cpu(*image));
6189                         return -EIO;
6190                 }
6191         }
6192
6193         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6194
6195         return 0;
6196 }
6197
6198 /**
6199  * iwl4965_load_bsm - Load bootstrap instructions
6200  *
6201  * BSM operation:
6202  *
6203  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6204  * in special SRAM that does not power down during RFKILL.  When powering back
6205  * up after power-saving sleeps (or during initial uCode load), the BSM loads
6206  * the bootstrap program into the on-board processor, and starts it.
6207  *
6208  * The bootstrap program loads (via DMA) instructions and data for a new
6209  * program from host DRAM locations indicated by the host driver in the
6210  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
6211  * automatically.
6212  *
6213  * When initializing the NIC, the host driver points the BSM to the
6214  * "initialize" uCode image.  This uCode sets up some internal data, then
6215  * notifies host via "initialize alive" that it is complete.
6216  *
6217  * The host then replaces the BSM_DRAM_* pointer values to point to the
6218  * normal runtime uCode instructions and a backup uCode data cache buffer
6219  * (filled initially with starting data values for the on-board processor),
6220  * then triggers the "initialize" uCode to load and launch the runtime uCode,
6221  * which begins normal operation.
6222  *
6223  * When doing a power-save shutdown, runtime uCode saves data SRAM into
6224  * the backup data cache in DRAM before SRAM is powered down.
6225  *
6226  * When powering back up, the BSM loads the bootstrap program.  This reloads
6227  * the runtime uCode instructions and the backup data cache into SRAM,
6228  * and re-launches the runtime uCode from where it left off.
6229  */
6230 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6231 {
6232         __le32 *image = priv->ucode_boot.v_addr;
6233         u32 len = priv->ucode_boot.len;
6234         dma_addr_t pinst;
6235         dma_addr_t pdata;
6236         u32 inst_len;
6237         u32 data_len;
6238         int rc;
6239         int i;
6240         u32 done;
6241         u32 reg_offset;
6242
6243         IWL_DEBUG_INFO("Begin load bsm\n");
6244
6245         /* make sure bootstrap program is no larger than BSM's SRAM size */
6246         if (len > IWL_MAX_BSM_SIZE)
6247                 return -EINVAL;
6248
6249         /* Tell bootstrap uCode where to find the "Initialize" uCode
6250          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
6251          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
6252          *        after the "initialize" uCode has run, to point to
6253          *        runtime/protocol instructions and backup data cache. */
6254         pinst = priv->ucode_init.p_addr >> 4;
6255         pdata = priv->ucode_init_data.p_addr >> 4;
6256         inst_len = priv->ucode_init.len;
6257         data_len = priv->ucode_init_data.len;
6258
6259         rc = iwl4965_grab_nic_access(priv);
6260         if (rc)
6261                 return rc;
6262
6263         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6264         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6265         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6266         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6267
6268         /* Fill BSM memory with bootstrap instructions */
6269         for (reg_offset = BSM_SRAM_LOWER_BOUND;
6270              reg_offset < BSM_SRAM_LOWER_BOUND + len;
6271              reg_offset += sizeof(u32), image++)
6272                 _iwl4965_write_prph(priv, reg_offset,
6273                                           le32_to_cpu(*image));
6274
6275         rc = iwl4965_verify_bsm(priv);
6276         if (rc) {
6277                 iwl4965_release_nic_access(priv);
6278                 return rc;
6279         }
6280
6281         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6282         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6283         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6284                                  RTC_INST_LOWER_BOUND);
6285         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6286
6287         /* Load bootstrap code into instruction SRAM now,
6288          *   to prepare to load "initialize" uCode */
6289         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6290                 BSM_WR_CTRL_REG_BIT_START);
6291
6292         /* Wait for load of bootstrap uCode to finish */
6293         for (i = 0; i < 100; i++) {
6294                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6295                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6296                         break;
6297                 udelay(10);
6298         }
6299         if (i < 100)
6300                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6301         else {
6302                 IWL_ERROR("BSM write did not complete!\n");
6303                 return -EIO;
6304         }
6305
6306         /* Enable future boot loads whenever power management unit triggers it
6307          *   (e.g. when powering back up after power-save shutdown) */
6308         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6309                 BSM_WR_CTRL_REG_BIT_START_EN);
6310
6311         iwl4965_release_nic_access(priv);
6312
6313         return 0;
6314 }
6315
6316 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6317 {
6318         /* Remove all resets to allow NIC to operate */
6319         iwl4965_write32(priv, CSR_RESET, 0);
6320 }
6321
6322 static int iwl4965_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
6323 {
6324         desc->v_addr = pci_alloc_consistent(pci_dev, desc->len, &desc->p_addr);
6325         return (desc->v_addr != NULL) ? 0 : -ENOMEM;
6326 }
6327
6328 /**
6329  * iwl4965_read_ucode - Read uCode images from disk file.
6330  *
6331  * Copy into buffers for card to fetch via bus-mastering
6332  */
6333 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6334 {
6335         struct iwl4965_ucode *ucode;
6336         int ret;
6337         const struct firmware *ucode_raw;
6338         const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6339         u8 *src;
6340         size_t len;
6341         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6342
6343         /* Ask kernel firmware_class module to get the boot firmware off disk.
6344          * request_firmware() is synchronous, file is in memory on return. */
6345         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6346         if (ret < 0) {
6347                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6348                                         name, ret);
6349                 goto error;
6350         }
6351
6352         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6353                        name, ucode_raw->size);
6354
6355         /* Make sure that we got at least our header! */
6356         if (ucode_raw->size < sizeof(*ucode)) {
6357                 IWL_ERROR("File size way too small!\n");
6358                 ret = -EINVAL;
6359                 goto err_release;
6360         }
6361
6362         /* Data from ucode file:  header followed by uCode images */
6363         ucode = (void *)ucode_raw->data;
6364
6365         ver = le32_to_cpu(ucode->ver);
6366         inst_size = le32_to_cpu(ucode->inst_size);
6367         data_size = le32_to_cpu(ucode->data_size);
6368         init_size = le32_to_cpu(ucode->init_size);
6369         init_data_size = le32_to_cpu(ucode->init_data_size);
6370         boot_size = le32_to_cpu(ucode->boot_size);
6371
6372         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6373         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6374                        inst_size);
6375         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6376                        data_size);
6377         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6378                        init_size);
6379         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6380                        init_data_size);
6381         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6382                        boot_size);
6383
6384         /* Verify size of file vs. image size info in file's header */
6385         if (ucode_raw->size < sizeof(*ucode) +
6386                 inst_size + data_size + init_size +
6387                 init_data_size + boot_size) {
6388
6389                 IWL_DEBUG_INFO("uCode file size %d too small\n",
6390                                (int)ucode_raw->size);
6391                 ret = -EINVAL;
6392                 goto err_release;
6393         }
6394
6395         /* Verify that uCode images will fit in card's SRAM */
6396         if (inst_size > IWL_MAX_INST_SIZE) {
6397                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6398                                inst_size);
6399                 ret = -EINVAL;
6400                 goto err_release;
6401         }
6402
6403         if (data_size > IWL_MAX_DATA_SIZE) {
6404                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6405                                 data_size);
6406                 ret = -EINVAL;
6407                 goto err_release;
6408         }
6409         if (init_size > IWL_MAX_INST_SIZE) {
6410                 IWL_DEBUG_INFO
6411                     ("uCode init instr len %d too large to fit in\n",
6412                       init_size);
6413                 ret = -EINVAL;
6414                 goto err_release;
6415         }
6416         if (init_data_size > IWL_MAX_DATA_SIZE) {
6417                 IWL_DEBUG_INFO
6418                     ("uCode init data len %d too large to fit in\n",
6419                       init_data_size);
6420                 ret = -EINVAL;
6421                 goto err_release;
6422         }
6423         if (boot_size > IWL_MAX_BSM_SIZE) {
6424                 IWL_DEBUG_INFO
6425                     ("uCode boot instr len %d too large to fit in\n",
6426                       boot_size);
6427                 ret = -EINVAL;
6428                 goto err_release;
6429         }
6430
6431         /* Allocate ucode buffers for card's bus-master loading ... */
6432
6433         /* Runtime instructions and 2 copies of data:
6434          * 1) unmodified from disk
6435          * 2) backup cache for save/restore during power-downs */
6436         priv->ucode_code.len = inst_size;
6437         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6438
6439         priv->ucode_data.len = data_size;
6440         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6441
6442         priv->ucode_data_backup.len = data_size;
6443         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6444
6445         /* Initialization instructions and data */
6446         if (init_size && init_data_size) {
6447                 priv->ucode_init.len = init_size;
6448                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6449
6450                 priv->ucode_init_data.len = init_data_size;
6451                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6452
6453                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6454                         goto err_pci_alloc;
6455         }
6456
6457         /* Bootstrap (instructions only, no data) */
6458         if (boot_size) {
6459                 priv->ucode_boot.len = boot_size;
6460                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6461
6462                 if (!priv->ucode_boot.v_addr)
6463                         goto err_pci_alloc;
6464         }
6465
6466         /* Copy images into buffers for card's bus-master reads ... */
6467
6468         /* Runtime instructions (first block of data in file) */
6469         src = &ucode->data[0];
6470         len = priv->ucode_code.len;
6471         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6472         memcpy(priv->ucode_code.v_addr, src, len);
6473         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6474                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6475
6476         /* Runtime data (2nd block)
6477          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
6478         src = &ucode->data[inst_size];
6479         len = priv->ucode_data.len;
6480         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6481         memcpy(priv->ucode_data.v_addr, src, len);
6482         memcpy(priv->ucode_data_backup.v_addr, src, len);
6483
6484         /* Initialization instructions (3rd block) */
6485         if (init_size) {
6486                 src = &ucode->data[inst_size + data_size];
6487                 len = priv->ucode_init.len;
6488                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6489                                 len);
6490                 memcpy(priv->ucode_init.v_addr, src, len);
6491         }
6492
6493         /* Initialization data (4th block) */
6494         if (init_data_size) {
6495                 src = &ucode->data[inst_size + data_size + init_size];
6496                 len = priv->ucode_init_data.len;
6497                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6498                                len);
6499                 memcpy(priv->ucode_init_data.v_addr, src, len);
6500         }
6501
6502         /* Bootstrap instructions (5th block) */
6503         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6504         len = priv->ucode_boot.len;
6505         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6506         memcpy(priv->ucode_boot.v_addr, src, len);
6507
6508         /* We have our copies now, allow OS release its copies */
6509         release_firmware(ucode_raw);
6510         return 0;
6511
6512  err_pci_alloc:
6513         IWL_ERROR("failed to allocate pci memory\n");
6514         ret = -ENOMEM;
6515         iwl4965_dealloc_ucode_pci(priv);
6516
6517  err_release:
6518         release_firmware(ucode_raw);
6519
6520  error:
6521         return ret;
6522 }
6523
6524
6525 /**
6526  * iwl4965_set_ucode_ptrs - Set uCode address location
6527  *
6528  * Tell initialization uCode where to find runtime uCode.
6529  *
6530  * BSM registers initially contain pointers to initialization uCode.
6531  * We need to replace them to load runtime uCode inst and data,
6532  * and to save runtime data when powering down.
6533  */
6534 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6535 {
6536         dma_addr_t pinst;
6537         dma_addr_t pdata;
6538         int rc = 0;
6539         unsigned long flags;
6540
6541         /* bits 35:4 for 4965 */
6542         pinst = priv->ucode_code.p_addr >> 4;
6543         pdata = priv->ucode_data_backup.p_addr >> 4;
6544
6545         spin_lock_irqsave(&priv->lock, flags);
6546         rc = iwl4965_grab_nic_access(priv);
6547         if (rc) {
6548                 spin_unlock_irqrestore(&priv->lock, flags);
6549                 return rc;
6550         }
6551
6552         /* Tell bootstrap uCode where to find image to load */
6553         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6554         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6555         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6556                                  priv->ucode_data.len);
6557
6558         /* Inst bytecount must be last to set up, bit 31 signals uCode
6559          *   that all new ptr/size info is in place */
6560         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6561                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6562
6563         iwl4965_release_nic_access(priv);
6564
6565         spin_unlock_irqrestore(&priv->lock, flags);
6566
6567         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6568
6569         return rc;
6570 }
6571
6572 /**
6573  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6574  *
6575  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6576  *
6577  * The 4965 "initialize" ALIVE reply contains calibration data for:
6578  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
6579  *   (3945 does not contain this data).
6580  *
6581  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6582 */
6583 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6584 {
6585         /* Check alive response for "valid" sign from uCode */
6586         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6587                 /* We had an error bringing up the hardware, so take it
6588                  * all the way back down so we can try again */
6589                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6590                 goto restart;
6591         }
6592
6593         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6594          * This is a paranoid check, because we would not have gotten the
6595          * "initialize" alive if code weren't properly loaded.  */
6596         if (iwl4965_verify_ucode(priv)) {
6597                 /* Runtime instruction load was bad;
6598                  * take it all the way back down so we can try again */
6599                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6600                 goto restart;
6601         }
6602
6603         /* Calculate temperature */
6604         priv->temperature = iwl4965_get_temperature(priv);
6605
6606         /* Send pointers to protocol/runtime uCode image ... init code will
6607          * load and launch runtime uCode, which will send us another "Alive"
6608          * notification. */
6609         IWL_DEBUG_INFO("Initialization Alive received.\n");
6610         if (iwl4965_set_ucode_ptrs(priv)) {
6611                 /* Runtime instruction load won't happen;
6612                  * take it all the way back down so we can try again */
6613                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6614                 goto restart;
6615         }
6616         return;
6617
6618  restart:
6619         queue_work(priv->workqueue, &priv->restart);
6620 }
6621
6622
6623 /**
6624  * iwl4965_alive_start - called after REPLY_ALIVE notification received
6625  *                   from protocol/runtime uCode (initialization uCode's
6626  *                   Alive gets handled by iwl4965_init_alive_start()).
6627  */
6628 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6629 {
6630         int rc = 0;
6631
6632         IWL_DEBUG_INFO("Runtime Alive received.\n");
6633
6634         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6635                 /* We had an error bringing up the hardware, so take it
6636                  * all the way back down so we can try again */
6637                 IWL_DEBUG_INFO("Alive failed.\n");
6638                 goto restart;
6639         }
6640
6641         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6642          * This is a paranoid check, because we would not have gotten the
6643          * "runtime" alive if code weren't properly loaded.  */
6644         if (iwl4965_verify_ucode(priv)) {
6645                 /* Runtime instruction load was bad;
6646                  * take it all the way back down so we can try again */
6647                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6648                 goto restart;
6649         }
6650
6651         iwl4965_clear_stations_table(priv);
6652
6653         rc = iwl4965_alive_notify(priv);
6654         if (rc) {
6655                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6656                             rc);
6657                 goto restart;
6658         }
6659
6660         /* After the ALIVE response, we can send host commands to 4965 uCode */
6661         set_bit(STATUS_ALIVE, &priv->status);
6662
6663         /* Clear out the uCode error bit if it is set */
6664         clear_bit(STATUS_FW_ERROR, &priv->status);
6665
6666         rc = iwl4965_init_channel_map(priv);
6667         if (rc) {
6668                 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6669                 return;
6670         }
6671
6672         iwl4965_init_geos(priv);
6673
6674         if (iwl4965_is_rfkill(priv))
6675                 return;
6676
6677         if (!priv->mac80211_registered) {
6678                 /* Unlock so any user space entry points can call back into
6679                  * the driver without a deadlock... */
6680                 mutex_unlock(&priv->mutex);
6681                 iwl4965_rate_control_register(priv->hw);
6682                 rc = ieee80211_register_hw(priv->hw);
6683                 priv->hw->conf.beacon_int = 100;
6684                 mutex_lock(&priv->mutex);
6685
6686                 if (rc) {
6687                         iwl4965_rate_control_unregister(priv->hw);
6688                         IWL_ERROR("Failed to register network "
6689                                   "device (error %d)\n", rc);
6690                         return;
6691                 }
6692
6693                 priv->mac80211_registered = 1;
6694
6695                 iwl4965_reset_channel_flag(priv);
6696         } else
6697                 ieee80211_start_queues(priv->hw);
6698
6699         priv->active_rate = priv->rates_mask;
6700         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6701
6702         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6703
6704         if (iwl4965_is_associated(priv)) {
6705                 struct iwl4965_rxon_cmd *active_rxon =
6706                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6707
6708                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6709                        sizeof(priv->staging_rxon));
6710                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6711         } else {
6712                 /* Initialize our rx_config data */
6713                 iwl4965_connection_init_rx_config(priv);
6714                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6715         }
6716
6717         /* Configure Bluetooth device coexistence support */
6718         iwl4965_send_bt_config(priv);
6719
6720         /* Configure the adapter for unassociated operation */
6721         iwl4965_commit_rxon(priv);
6722
6723         /* At this point, the NIC is initialized and operational */
6724         priv->notif_missed_beacons = 0;
6725         set_bit(STATUS_READY, &priv->status);
6726
6727         iwl4965_rf_kill_ct_config(priv);
6728         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6729
6730         if (priv->error_recovering)
6731                 iwl4965_error_recovery(priv);
6732
6733         return;
6734
6735  restart:
6736         queue_work(priv->workqueue, &priv->restart);
6737 }
6738
6739 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6740
6741 static void __iwl4965_down(struct iwl4965_priv *priv)
6742 {
6743         unsigned long flags;
6744         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6745         struct ieee80211_conf *conf = NULL;
6746
6747         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6748
6749         conf = ieee80211_get_hw_conf(priv->hw);
6750
6751         if (!exit_pending)
6752                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6753
6754         iwl4965_clear_stations_table(priv);
6755
6756         /* Unblock any waiting calls */
6757         wake_up_interruptible_all(&priv->wait_command_queue);
6758
6759         /* Wipe out the EXIT_PENDING status bit if we are not actually
6760          * exiting the module */
6761         if (!exit_pending)
6762                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6763
6764         /* stop and reset the on-board processor */
6765         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6766
6767         /* tell the device to stop sending interrupts */
6768         iwl4965_disable_interrupts(priv);
6769
6770         if (priv->mac80211_registered)
6771                 ieee80211_stop_queues(priv->hw);
6772
6773         /* If we have not previously called iwl4965_init() then
6774          * clear all bits but the RF Kill and SUSPEND bits and return */
6775         if (!iwl4965_is_init(priv)) {
6776                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6777                                         STATUS_RF_KILL_HW |
6778                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6779                                         STATUS_RF_KILL_SW |
6780                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6781                                         STATUS_IN_SUSPEND;
6782                 goto exit;
6783         }
6784
6785         /* ...otherwise clear out all the status bits but the RF Kill and
6786          * SUSPEND bits and continue taking the NIC down. */
6787         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6788                                 STATUS_RF_KILL_HW |
6789                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6790                                 STATUS_RF_KILL_SW |
6791                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6792                                 STATUS_IN_SUSPEND |
6793                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6794                                 STATUS_FW_ERROR;
6795
6796         spin_lock_irqsave(&priv->lock, flags);
6797         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6798                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6799         spin_unlock_irqrestore(&priv->lock, flags);
6800
6801         iwl4965_hw_txq_ctx_stop(priv);
6802         iwl4965_hw_rxq_stop(priv);
6803
6804         spin_lock_irqsave(&priv->lock, flags);
6805         if (!iwl4965_grab_nic_access(priv)) {
6806                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6807                                          APMG_CLK_VAL_DMA_CLK_RQT);
6808                 iwl4965_release_nic_access(priv);
6809         }
6810         spin_unlock_irqrestore(&priv->lock, flags);
6811
6812         udelay(5);
6813
6814         iwl4965_hw_nic_stop_master(priv);
6815         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6816         iwl4965_hw_nic_reset(priv);
6817
6818  exit:
6819         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6820
6821         if (priv->ibss_beacon)
6822                 dev_kfree_skb(priv->ibss_beacon);
6823         priv->ibss_beacon = NULL;
6824
6825         /* clear out any free frames */
6826         iwl4965_clear_free_frames(priv);
6827 }
6828
6829 static void iwl4965_down(struct iwl4965_priv *priv)
6830 {
6831         mutex_lock(&priv->mutex);
6832         __iwl4965_down(priv);
6833         mutex_unlock(&priv->mutex);
6834
6835         iwl4965_cancel_deferred_work(priv);
6836 }
6837
6838 #define MAX_HW_RESTARTS 5
6839
6840 static int __iwl4965_up(struct iwl4965_priv *priv)
6841 {
6842         DECLARE_MAC_BUF(mac);
6843         int rc, i;
6844         u32 hw_rf_kill = 0;
6845
6846         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6847                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6848                 return -EIO;
6849         }
6850
6851         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6852                 IWL_WARNING("Radio disabled by SW RF kill (module "
6853                             "parameter)\n");
6854                 return 0;
6855         }
6856
6857         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6858                 IWL_ERROR("ucode not available for device bringup\n");
6859                 return -EIO;
6860         }
6861
6862         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6863
6864         rc = iwl4965_hw_nic_init(priv);
6865         if (rc) {
6866                 IWL_ERROR("Unable to int nic\n");
6867                 return rc;
6868         }
6869
6870         /* make sure rfkill handshake bits are cleared */
6871         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6872         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6873                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6874
6875         /* clear (again), then enable host interrupts */
6876         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6877         iwl4965_enable_interrupts(priv);
6878
6879         /* really make sure rfkill handshake bits are cleared */
6880         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6881         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6882
6883         /* Copy original ucode data image from disk into backup cache.
6884          * This will be used to initialize the on-board processor's
6885          * data SRAM for a clean start when the runtime program first loads. */
6886         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6887                         priv->ucode_data.len);
6888
6889         /* If platform's RF_KILL switch is set to KILL,
6890          * wait for BIT_INT_RF_KILL interrupt before loading uCode
6891          * and getting things started */
6892         if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
6893                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6894                 hw_rf_kill = 1;
6895
6896         if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6897                 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6898                 return 0;
6899         }
6900
6901         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6902
6903                 iwl4965_clear_stations_table(priv);
6904
6905                 /* load bootstrap state machine,
6906                  * load bootstrap program into processor's memory,
6907                  * prepare to load the "initialize" uCode */
6908                 rc = iwl4965_load_bsm(priv);
6909
6910                 if (rc) {
6911                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6912                         continue;
6913                 }
6914
6915                 /* start card; "initialize" will load runtime ucode */
6916                 iwl4965_nic_start(priv);
6917
6918                 /* MAC Address location in EEPROM is same for 3945/4965 */
6919                 get_eeprom_mac(priv, priv->mac_addr);
6920                 IWL_DEBUG_INFO("MAC address: %s\n",
6921                                print_mac(mac, priv->mac_addr));
6922
6923                 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6924
6925                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6926
6927                 return 0;
6928         }
6929
6930         set_bit(STATUS_EXIT_PENDING, &priv->status);
6931         __iwl4965_down(priv);
6932
6933         /* tried to restart and config the device for as long as our
6934          * patience could withstand */
6935         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6936         return -EIO;
6937 }
6938
6939
6940 /*****************************************************************************
6941  *
6942  * Workqueue callbacks
6943  *
6944  *****************************************************************************/
6945
6946 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6947 {
6948         struct iwl4965_priv *priv =
6949             container_of(data, struct iwl4965_priv, init_alive_start.work);
6950
6951         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6952                 return;
6953
6954         mutex_lock(&priv->mutex);
6955         iwl4965_init_alive_start(priv);
6956         mutex_unlock(&priv->mutex);
6957 }
6958
6959 static void iwl4965_bg_alive_start(struct work_struct *data)
6960 {
6961         struct iwl4965_priv *priv =
6962             container_of(data, struct iwl4965_priv, alive_start.work);
6963
6964         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6965                 return;
6966
6967         mutex_lock(&priv->mutex);
6968         iwl4965_alive_start(priv);
6969         mutex_unlock(&priv->mutex);
6970 }
6971
6972 static void iwl4965_bg_rf_kill(struct work_struct *work)
6973 {
6974         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6975
6976         wake_up_interruptible(&priv->wait_command_queue);
6977
6978         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6979                 return;
6980
6981         mutex_lock(&priv->mutex);
6982
6983         if (!iwl4965_is_rfkill(priv)) {
6984                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6985                           "HW and/or SW RF Kill no longer active, restarting "
6986                           "device\n");
6987                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6988                         queue_work(priv->workqueue, &priv->restart);
6989         } else {
6990
6991                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6992                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6993                                           "disabled by SW switch\n");
6994                 else
6995                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6996                                     "Kill switch must be turned off for "
6997                                     "wireless networking to work.\n");
6998         }
6999         mutex_unlock(&priv->mutex);
7000 }
7001
7002 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
7003
7004 static void iwl4965_bg_scan_check(struct work_struct *data)
7005 {
7006         struct iwl4965_priv *priv =
7007             container_of(data, struct iwl4965_priv, scan_check.work);
7008
7009         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7010                 return;
7011
7012         mutex_lock(&priv->mutex);
7013         if (test_bit(STATUS_SCANNING, &priv->status) ||
7014             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
7015                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
7016                           "Scan completion watchdog resetting adapter (%dms)\n",
7017                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
7018
7019                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
7020                         iwl4965_send_scan_abort(priv);
7021         }
7022         mutex_unlock(&priv->mutex);
7023 }
7024
7025 static void iwl4965_bg_request_scan(struct work_struct *data)
7026 {
7027         struct iwl4965_priv *priv =
7028             container_of(data, struct iwl4965_priv, request_scan);
7029         struct iwl4965_host_cmd cmd = {
7030                 .id = REPLY_SCAN_CMD,
7031                 .len = sizeof(struct iwl4965_scan_cmd),
7032                 .meta.flags = CMD_SIZE_HUGE,
7033         };
7034         int rc = 0;
7035         struct iwl4965_scan_cmd *scan;
7036         struct ieee80211_conf *conf = NULL;
7037         u8 direct_mask;
7038         int phymode;
7039
7040         conf = ieee80211_get_hw_conf(priv->hw);
7041
7042         mutex_lock(&priv->mutex);
7043
7044         if (!iwl4965_is_ready(priv)) {
7045                 IWL_WARNING("request scan called when driver not ready.\n");
7046                 goto done;
7047         }
7048
7049         /* Make sure the scan wasn't cancelled before this queued work
7050          * was given the chance to run... */
7051         if (!test_bit(STATUS_SCANNING, &priv->status))
7052                 goto done;
7053
7054         /* This should never be called or scheduled if there is currently
7055          * a scan active in the hardware. */
7056         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
7057                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
7058                                "Ignoring second request.\n");
7059                 rc = -EIO;
7060                 goto done;
7061         }
7062
7063         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
7064                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
7065                 goto done;
7066         }
7067
7068         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
7069                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
7070                 goto done;
7071         }
7072
7073         if (iwl4965_is_rfkill(priv)) {
7074                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
7075                 goto done;
7076         }
7077
7078         if (!test_bit(STATUS_READY, &priv->status)) {
7079                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
7080                 goto done;
7081         }
7082
7083         if (!priv->scan_bands) {
7084                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
7085                 goto done;
7086         }
7087
7088         if (!priv->scan) {
7089                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
7090                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
7091                 if (!priv->scan) {
7092                         rc = -ENOMEM;
7093                         goto done;
7094                 }
7095         }
7096         scan = priv->scan;
7097         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
7098
7099         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
7100         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
7101
7102         if (iwl4965_is_associated(priv)) {
7103                 u16 interval = 0;
7104                 u32 extra;
7105                 u32 suspend_time = 100;
7106                 u32 scan_suspend_time = 100;
7107                 unsigned long flags;
7108
7109                 IWL_DEBUG_INFO("Scanning while associated...\n");
7110
7111                 spin_lock_irqsave(&priv->lock, flags);
7112                 interval = priv->beacon_int;
7113                 spin_unlock_irqrestore(&priv->lock, flags);
7114
7115                 scan->suspend_time = 0;
7116                 scan->max_out_time = cpu_to_le32(200 * 1024);
7117                 if (!interval)
7118                         interval = suspend_time;
7119
7120                 extra = (suspend_time / interval) << 22;
7121                 scan_suspend_time = (extra |
7122                     ((suspend_time % interval) * 1024));
7123                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
7124                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
7125                                scan_suspend_time, interval);
7126         }
7127
7128         /* We should add the ability for user to lock to PASSIVE ONLY */
7129         if (priv->one_direct_scan) {
7130                 IWL_DEBUG_SCAN
7131                     ("Kicking off one direct scan for '%s'\n",
7132                      iwl4965_escape_essid(priv->direct_ssid,
7133                                       priv->direct_ssid_len));
7134                 scan->direct_scan[0].id = WLAN_EID_SSID;
7135                 scan->direct_scan[0].len = priv->direct_ssid_len;
7136                 memcpy(scan->direct_scan[0].ssid,
7137                        priv->direct_ssid, priv->direct_ssid_len);
7138                 direct_mask = 1;
7139         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
7140                 scan->direct_scan[0].id = WLAN_EID_SSID;
7141                 scan->direct_scan[0].len = priv->essid_len;
7142                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
7143                 direct_mask = 1;
7144         } else
7145                 direct_mask = 0;
7146
7147         /* We don't build a direct scan probe request; the uCode will do
7148          * that based on the direct_mask added to each channel entry */
7149         scan->tx_cmd.len = cpu_to_le16(
7150                 iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
7151                         IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
7152         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
7153         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
7154         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
7155
7156         /* flags + rate selection */
7157
7158         scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
7159
7160         switch (priv->scan_bands) {
7161         case 2:
7162                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
7163                 scan->tx_cmd.rate_n_flags =
7164                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
7165                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7166
7167                 scan->good_CRC_th = 0;
7168                 phymode = MODE_IEEE80211G;
7169                 break;
7170
7171         case 1:
7172                 scan->tx_cmd.rate_n_flags =
7173                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7174                                 RATE_MCS_ANT_B_MSK);
7175                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7176                 phymode = MODE_IEEE80211A;
7177                 break;
7178
7179         default:
7180                 IWL_WARNING("Invalid scan band count\n");
7181                 goto done;
7182         }
7183
7184         /* select Rx chains */
7185
7186         /* Force use of chains B and C (0x6) for scan Rx.
7187          * Avoid A (0x1) because of its off-channel reception on A-band.
7188          * MIMO is not used here, but value is required to make uCode happy. */
7189         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7190                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7191                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7192                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7193
7194         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7195                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7196
7197         if (direct_mask)
7198                 IWL_DEBUG_SCAN
7199                     ("Initiating direct scan for %s.\n",
7200                      iwl4965_escape_essid(priv->essid, priv->essid_len));
7201         else
7202                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7203
7204         scan->channel_count =
7205                 iwl4965_get_channels_for_scan(
7206                         priv, phymode, 1, /* active */
7207                         direct_mask,
7208                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7209
7210         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7211             scan->channel_count * sizeof(struct iwl4965_scan_channel);
7212         cmd.data = scan;
7213         scan->len = cpu_to_le16(cmd.len);
7214
7215         set_bit(STATUS_SCAN_HW, &priv->status);
7216         rc = iwl4965_send_cmd_sync(priv, &cmd);
7217         if (rc)
7218                 goto done;
7219
7220         queue_delayed_work(priv->workqueue, &priv->scan_check,
7221                            IWL_SCAN_CHECK_WATCHDOG);
7222
7223         mutex_unlock(&priv->mutex);
7224         return;
7225
7226  done:
7227         /* inform mac80211 scan aborted */
7228         queue_work(priv->workqueue, &priv->scan_completed);
7229         mutex_unlock(&priv->mutex);
7230 }
7231
7232 static void iwl4965_bg_up(struct work_struct *data)
7233 {
7234         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7235
7236         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7237                 return;
7238
7239         mutex_lock(&priv->mutex);
7240         __iwl4965_up(priv);
7241         mutex_unlock(&priv->mutex);
7242 }
7243
7244 static void iwl4965_bg_restart(struct work_struct *data)
7245 {
7246         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7247
7248         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7249                 return;
7250
7251         iwl4965_down(priv);
7252         queue_work(priv->workqueue, &priv->up);
7253 }
7254
7255 static void iwl4965_bg_rx_replenish(struct work_struct *data)
7256 {
7257         struct iwl4965_priv *priv =
7258             container_of(data, struct iwl4965_priv, rx_replenish);
7259
7260         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7261                 return;
7262
7263         mutex_lock(&priv->mutex);
7264         iwl4965_rx_replenish(priv);
7265         mutex_unlock(&priv->mutex);
7266 }
7267
7268 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7269
7270 static void iwl4965_bg_post_associate(struct work_struct *data)
7271 {
7272         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7273                                              post_associate.work);
7274
7275         int rc = 0;
7276         struct ieee80211_conf *conf = NULL;
7277         DECLARE_MAC_BUF(mac);
7278
7279         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7280                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7281                 return;
7282         }
7283
7284         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7285                         priv->assoc_id,
7286                         print_mac(mac, priv->active_rxon.bssid_addr));
7287
7288
7289         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7290                 return;
7291
7292         mutex_lock(&priv->mutex);
7293
7294         if (!priv->interface_id || !priv->is_open) {
7295                 mutex_unlock(&priv->mutex);
7296                 return;
7297         }
7298         iwl4965_scan_cancel_timeout(priv, 200);
7299
7300         conf = ieee80211_get_hw_conf(priv->hw);
7301
7302         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7303         iwl4965_commit_rxon(priv);
7304
7305         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7306         iwl4965_setup_rxon_timing(priv);
7307         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7308                               sizeof(priv->rxon_timing), &priv->rxon_timing);
7309         if (rc)
7310                 IWL_WARNING("REPLY_RXON_TIMING failed - "
7311                             "Attempting to continue.\n");
7312
7313         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7314
7315 #ifdef CONFIG_IWL4965_HT
7316         if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7317                 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7318         else {
7319                 priv->active_rate_ht[0] = 0;
7320                 priv->active_rate_ht[1] = 0;
7321                 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7322         }
7323 #endif /* CONFIG_IWL4965_HT*/
7324         iwl4965_set_rxon_chain(priv);
7325         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7326
7327         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7328                         priv->assoc_id, priv->beacon_int);
7329
7330         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7331                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7332         else
7333                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7334
7335         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7336                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7337                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7338                 else
7339                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7340
7341                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7342                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7343
7344         }
7345
7346         iwl4965_commit_rxon(priv);
7347
7348         switch (priv->iw_mode) {
7349         case IEEE80211_IF_TYPE_STA:
7350                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7351                 break;
7352
7353         case IEEE80211_IF_TYPE_IBSS:
7354
7355                 /* clear out the station table */
7356                 iwl4965_clear_stations_table(priv);
7357
7358                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7359                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7360                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7361                 iwl4965_send_beacon_cmd(priv);
7362
7363                 break;
7364
7365         default:
7366                 IWL_ERROR("%s Should not be called in %d mode\n",
7367                                 __FUNCTION__, priv->iw_mode);
7368                 break;
7369         }
7370
7371         iwl4965_sequence_reset(priv);
7372
7373 #ifdef CONFIG_IWL4965_SENSITIVITY
7374         /* Enable Rx differential gain and sensitivity calibrations */
7375         iwl4965_chain_noise_reset(priv);
7376         priv->start_calib = 1;
7377 #endif /* CONFIG_IWL4965_SENSITIVITY */
7378
7379         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7380                 priv->assoc_station_added = 1;
7381
7382 #ifdef CONFIG_IWL4965_QOS
7383         iwl4965_activate_qos(priv, 0);
7384 #endif /* CONFIG_IWL4965_QOS */
7385         /* we have just associated, don't start scan too early */
7386         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7387         mutex_unlock(&priv->mutex);
7388 }
7389
7390 static void iwl4965_bg_abort_scan(struct work_struct *work)
7391 {
7392         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7393
7394         if (!iwl4965_is_ready(priv))
7395                 return;
7396
7397         mutex_lock(&priv->mutex);
7398
7399         set_bit(STATUS_SCAN_ABORTING, &priv->status);
7400         iwl4965_send_scan_abort(priv);
7401
7402         mutex_unlock(&priv->mutex);
7403 }
7404
7405 static void iwl4965_bg_scan_completed(struct work_struct *work)
7406 {
7407         struct iwl4965_priv *priv =
7408             container_of(work, struct iwl4965_priv, scan_completed);
7409
7410         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7411
7412         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7413                 return;
7414
7415         ieee80211_scan_completed(priv->hw);
7416
7417         /* Since setting the TXPOWER may have been deferred while
7418          * performing the scan, fire one off */
7419         mutex_lock(&priv->mutex);
7420         iwl4965_hw_reg_send_txpower(priv);
7421         mutex_unlock(&priv->mutex);
7422 }
7423
7424 /*****************************************************************************
7425  *
7426  * mac80211 entry point functions
7427  *
7428  *****************************************************************************/
7429
7430 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7431 {
7432         struct iwl4965_priv *priv = hw->priv;
7433
7434         IWL_DEBUG_MAC80211("enter\n");
7435
7436         /* we should be verifying the device is ready to be opened */
7437         mutex_lock(&priv->mutex);
7438
7439         priv->is_open = 1;
7440
7441         if (!iwl4965_is_rfkill(priv))
7442                 ieee80211_start_queues(priv->hw);
7443
7444         mutex_unlock(&priv->mutex);
7445         IWL_DEBUG_MAC80211("leave\n");
7446         return 0;
7447 }
7448
7449 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7450 {
7451         struct iwl4965_priv *priv = hw->priv;
7452
7453         IWL_DEBUG_MAC80211("enter\n");
7454
7455
7456         mutex_lock(&priv->mutex);
7457         /* stop mac, cancel any scan request and clear
7458          * RXON_FILTER_ASSOC_MSK BIT
7459          */
7460         priv->is_open = 0;
7461         iwl4965_scan_cancel_timeout(priv, 100);
7462         cancel_delayed_work(&priv->post_associate);
7463         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7464         iwl4965_commit_rxon(priv);
7465         mutex_unlock(&priv->mutex);
7466
7467         IWL_DEBUG_MAC80211("leave\n");
7468 }
7469
7470 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7471                       struct ieee80211_tx_control *ctl)
7472 {
7473         struct iwl4965_priv *priv = hw->priv;
7474
7475         IWL_DEBUG_MAC80211("enter\n");
7476
7477         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7478                 IWL_DEBUG_MAC80211("leave - monitor\n");
7479                 return -1;
7480         }
7481
7482         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7483                      ctl->tx_rate);
7484
7485         if (iwl4965_tx_skb(priv, skb, ctl))
7486                 dev_kfree_skb_any(skb);
7487
7488         IWL_DEBUG_MAC80211("leave\n");
7489         return 0;
7490 }
7491
7492 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7493                                  struct ieee80211_if_init_conf *conf)
7494 {
7495         struct iwl4965_priv *priv = hw->priv;
7496         unsigned long flags;
7497         DECLARE_MAC_BUF(mac);
7498
7499         IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7500
7501         if (priv->interface_id) {
7502                 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7503                 return 0;
7504         }
7505
7506         spin_lock_irqsave(&priv->lock, flags);
7507         priv->interface_id = conf->if_id;
7508
7509         spin_unlock_irqrestore(&priv->lock, flags);
7510
7511         mutex_lock(&priv->mutex);
7512
7513         if (conf->mac_addr) {
7514                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7515                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7516         }
7517         iwl4965_set_mode(priv, conf->type);
7518
7519         IWL_DEBUG_MAC80211("leave\n");
7520         mutex_unlock(&priv->mutex);
7521
7522         return 0;
7523 }
7524
7525 /**
7526  * iwl4965_mac_config - mac80211 config callback
7527  *
7528  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7529  * be set inappropriately and the driver currently sets the hardware up to
7530  * use it whenever needed.
7531  */
7532 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7533 {
7534         struct iwl4965_priv *priv = hw->priv;
7535         const struct iwl4965_channel_info *ch_info;
7536         unsigned long flags;
7537
7538         mutex_lock(&priv->mutex);
7539         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7540
7541         if (!iwl4965_is_ready(priv)) {
7542                 IWL_DEBUG_MAC80211("leave - not ready\n");
7543                 mutex_unlock(&priv->mutex);
7544                 return -EIO;
7545         }
7546
7547         /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7548          * what is exposed through include/ declarations */
7549         if (unlikely(!iwl4965_param_disable_hw_scan &&
7550                      test_bit(STATUS_SCANNING, &priv->status))) {
7551                 IWL_DEBUG_MAC80211("leave - scanning\n");
7552                 mutex_unlock(&priv->mutex);
7553                 return 0;
7554         }
7555
7556         spin_lock_irqsave(&priv->lock, flags);
7557
7558         ch_info = iwl4965_get_channel_info(priv, conf->phymode, conf->channel);
7559         if (!is_channel_valid(ch_info)) {
7560                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7561                                conf->channel, conf->phymode);
7562                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7563                 spin_unlock_irqrestore(&priv->lock, flags);
7564                 mutex_unlock(&priv->mutex);
7565                 return -EINVAL;
7566         }
7567
7568 #ifdef CONFIG_IWL4965_HT
7569         /* if we are switching fron ht to 2.4 clear flags
7570          * from any ht related info since 2.4 does not
7571          * support ht */
7572         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7573 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7574             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7575 #endif
7576         )
7577                 priv->staging_rxon.flags = 0;
7578 #endif /* CONFIG_IWL4965_HT */
7579
7580         iwl4965_set_rxon_channel(priv, conf->phymode, conf->channel);
7581
7582         iwl4965_set_flags_for_phymode(priv, conf->phymode);
7583
7584         /* The list of supported rates and rate mask can be different
7585          * for each phymode; since the phymode may have changed, reset
7586          * the rate mask to what mac80211 lists */
7587         iwl4965_set_rate(priv);
7588
7589         spin_unlock_irqrestore(&priv->lock, flags);
7590
7591 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7592         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7593                 iwl4965_hw_channel_switch(priv, conf->channel);
7594                 mutex_unlock(&priv->mutex);
7595                 return 0;
7596         }
7597 #endif
7598
7599         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7600
7601         if (!conf->radio_enabled) {
7602                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7603                 mutex_unlock(&priv->mutex);
7604                 return 0;
7605         }
7606
7607         if (iwl4965_is_rfkill(priv)) {
7608                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7609                 mutex_unlock(&priv->mutex);
7610                 return -EIO;
7611         }
7612
7613         iwl4965_set_rate(priv);
7614
7615         if (memcmp(&priv->active_rxon,
7616                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7617                 iwl4965_commit_rxon(priv);
7618         else
7619                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7620
7621         IWL_DEBUG_MAC80211("leave\n");
7622
7623         mutex_unlock(&priv->mutex);
7624
7625         return 0;
7626 }
7627
7628 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7629 {
7630         int rc = 0;
7631
7632         if (priv->status & STATUS_EXIT_PENDING)
7633                 return;
7634
7635         /* The following should be done only at AP bring up */
7636         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7637
7638                 /* RXON - unassoc (to set timing command) */
7639                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7640                 iwl4965_commit_rxon(priv);
7641
7642                 /* RXON Timing */
7643                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7644                 iwl4965_setup_rxon_timing(priv);
7645                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7646                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7647                 if (rc)
7648                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7649                                         "Attempting to continue.\n");
7650
7651                 iwl4965_set_rxon_chain(priv);
7652
7653                 /* FIXME: what should be the assoc_id for AP? */
7654                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7655                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7656                         priv->staging_rxon.flags |=
7657                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7658                 else
7659                         priv->staging_rxon.flags &=
7660                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7661
7662                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7663                         if (priv->assoc_capability &
7664                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7665                                 priv->staging_rxon.flags |=
7666                                         RXON_FLG_SHORT_SLOT_MSK;
7667                         else
7668                                 priv->staging_rxon.flags &=
7669                                         ~RXON_FLG_SHORT_SLOT_MSK;
7670
7671                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7672                                 priv->staging_rxon.flags &=
7673                                         ~RXON_FLG_SHORT_SLOT_MSK;
7674                 }
7675                 /* restore RXON assoc */
7676                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7677                 iwl4965_commit_rxon(priv);
7678 #ifdef CONFIG_IWL4965_QOS
7679                 iwl4965_activate_qos(priv, 1);
7680 #endif
7681                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7682         }
7683         iwl4965_send_beacon_cmd(priv);
7684
7685         /* FIXME - we need to add code here to detect a totally new
7686          * configuration, reset the AP, unassoc, rxon timing, assoc,
7687          * clear sta table, add BCAST sta... */
7688 }
7689
7690 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7691                                     struct ieee80211_if_conf *conf)
7692 {
7693         struct iwl4965_priv *priv = hw->priv;
7694         DECLARE_MAC_BUF(mac);
7695         unsigned long flags;
7696         int rc;
7697
7698         if (conf == NULL)
7699                 return -EIO;
7700
7701         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7702             (!conf->beacon || !conf->ssid_len)) {
7703                 IWL_DEBUG_MAC80211
7704                     ("Leaving in AP mode because HostAPD is not ready.\n");
7705                 return 0;
7706         }
7707
7708         mutex_lock(&priv->mutex);
7709
7710         IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7711         if (conf->bssid)
7712                 IWL_DEBUG_MAC80211("bssid: %s\n",
7713                                    print_mac(mac, conf->bssid));
7714
7715 /*
7716  * very dubious code was here; the probe filtering flag is never set:
7717  *
7718         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7719             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7720  */
7721         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7722                 IWL_DEBUG_MAC80211("leave - scanning\n");
7723                 mutex_unlock(&priv->mutex);
7724                 return 0;
7725         }
7726
7727         if (priv->interface_id != if_id) {
7728                 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7729                 mutex_unlock(&priv->mutex);
7730                 return 0;
7731         }
7732
7733         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7734                 if (!conf->bssid) {
7735                         conf->bssid = priv->mac_addr;
7736                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7737                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7738                                            print_mac(mac, conf->bssid));
7739                 }
7740                 if (priv->ibss_beacon)
7741                         dev_kfree_skb(priv->ibss_beacon);
7742
7743                 priv->ibss_beacon = conf->beacon;
7744         }
7745
7746         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7747             !is_multicast_ether_addr(conf->bssid)) {
7748                 /* If there is currently a HW scan going on in the background
7749                  * then we need to cancel it else the RXON below will fail. */
7750                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7751                         IWL_WARNING("Aborted scan still in progress "
7752                                     "after 100ms\n");
7753                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7754                         mutex_unlock(&priv->mutex);
7755                         return -EAGAIN;
7756                 }
7757                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7758
7759                 /* TODO: Audit driver for usage of these members and see
7760                  * if mac80211 deprecates them (priv->bssid looks like it
7761                  * shouldn't be there, but I haven't scanned the IBSS code
7762                  * to verify) - jpk */
7763                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7764
7765                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7766                         iwl4965_config_ap(priv);
7767                 else {
7768                         rc = iwl4965_commit_rxon(priv);
7769                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7770                                 iwl4965_rxon_add_station(
7771                                         priv, priv->active_rxon.bssid_addr, 1);
7772                 }
7773
7774         } else {
7775                 iwl4965_scan_cancel_timeout(priv, 100);
7776                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7777                 iwl4965_commit_rxon(priv);
7778         }
7779
7780         spin_lock_irqsave(&priv->lock, flags);
7781         if (!conf->ssid_len)
7782                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7783         else
7784                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7785
7786         priv->essid_len = conf->ssid_len;
7787         spin_unlock_irqrestore(&priv->lock, flags);
7788
7789         IWL_DEBUG_MAC80211("leave\n");
7790         mutex_unlock(&priv->mutex);
7791
7792         return 0;
7793 }
7794
7795 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7796                                  unsigned int changed_flags,
7797                                  unsigned int *total_flags,
7798                                  int mc_count, struct dev_addr_list *mc_list)
7799 {
7800         /*
7801          * XXX: dummy
7802          * see also iwl4965_connection_init_rx_config
7803          */
7804         *total_flags = 0;
7805 }
7806
7807 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7808                                      struct ieee80211_if_init_conf *conf)
7809 {
7810         struct iwl4965_priv *priv = hw->priv;
7811
7812         IWL_DEBUG_MAC80211("enter\n");
7813
7814         mutex_lock(&priv->mutex);
7815
7816         iwl4965_scan_cancel_timeout(priv, 100);
7817         cancel_delayed_work(&priv->post_associate);
7818         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7819         iwl4965_commit_rxon(priv);
7820
7821         if (priv->interface_id == conf->if_id) {
7822                 priv->interface_id = 0;
7823                 memset(priv->bssid, 0, ETH_ALEN);
7824                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7825                 priv->essid_len = 0;
7826         }
7827         mutex_unlock(&priv->mutex);
7828
7829         IWL_DEBUG_MAC80211("leave\n");
7830
7831 }
7832 static void iwl4965_mac_erp_ie_changed(struct ieee80211_hw *hw,
7833                 u8 changes, int cts_protection, int preamble)
7834 {
7835         struct iwl4965_priv *priv = hw->priv;
7836
7837         if (changes & IEEE80211_ERP_CHANGE_PREAMBLE) {
7838                 if (preamble == WLAN_ERP_PREAMBLE_SHORT)
7839                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7840                 else
7841                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7842         }
7843
7844         if (changes & IEEE80211_ERP_CHANGE_PROTECTION) {
7845                 if (cts_protection && (priv->phymode != MODE_IEEE80211A))
7846                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7847                 else
7848                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7849         }
7850
7851         if (iwl4965_is_associated(priv))
7852                 iwl4965_send_rxon_assoc(priv);
7853 }
7854
7855 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7856 {
7857         int rc = 0;
7858         unsigned long flags;
7859         struct iwl4965_priv *priv = hw->priv;
7860
7861         IWL_DEBUG_MAC80211("enter\n");
7862
7863         mutex_lock(&priv->mutex);
7864         spin_lock_irqsave(&priv->lock, flags);
7865
7866         if (!iwl4965_is_ready_rf(priv)) {
7867                 rc = -EIO;
7868                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7869                 goto out_unlock;
7870         }
7871
7872         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7873                 rc = -EIO;
7874                 IWL_ERROR("ERROR: APs don't scan\n");
7875                 goto out_unlock;
7876         }
7877
7878         /* we don't schedule scan within next_scan_jiffies period */
7879         if (priv->next_scan_jiffies &&
7880                         time_after(priv->next_scan_jiffies, jiffies)) {
7881                 rc = -EAGAIN;
7882                 goto out_unlock;
7883         }
7884         /* if we just finished scan ask for delay */
7885         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7886                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
7887                 rc = -EAGAIN;
7888                 goto out_unlock;
7889         }
7890         if (len) {
7891                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7892                                iwl4965_escape_essid(ssid, len), (int)len);
7893
7894                 priv->one_direct_scan = 1;
7895                 priv->direct_ssid_len = (u8)
7896                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7897                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7898         } else
7899                 priv->one_direct_scan = 0;
7900
7901         rc = iwl4965_scan_initiate(priv);
7902
7903         IWL_DEBUG_MAC80211("leave\n");
7904
7905 out_unlock:
7906         spin_unlock_irqrestore(&priv->lock, flags);
7907         mutex_unlock(&priv->mutex);
7908
7909         return rc;
7910 }
7911
7912 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7913                            const u8 *local_addr, const u8 *addr,
7914                            struct ieee80211_key_conf *key)
7915 {
7916         struct iwl4965_priv *priv = hw->priv;
7917         DECLARE_MAC_BUF(mac);
7918         int rc = 0;
7919         u8 sta_id;
7920
7921         IWL_DEBUG_MAC80211("enter\n");
7922
7923         if (!iwl4965_param_hwcrypto) {
7924                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7925                 return -EOPNOTSUPP;
7926         }
7927
7928         if (is_zero_ether_addr(addr))
7929                 /* only support pairwise keys */
7930                 return -EOPNOTSUPP;
7931
7932         sta_id = iwl4965_hw_find_station(priv, addr);
7933         if (sta_id == IWL_INVALID_STATION) {
7934                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7935                                    print_mac(mac, addr));
7936                 return -EINVAL;
7937         }
7938
7939         mutex_lock(&priv->mutex);
7940
7941         iwl4965_scan_cancel_timeout(priv, 100);
7942
7943         switch (cmd) {
7944         case  SET_KEY:
7945                 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7946                 if (!rc) {
7947                         iwl4965_set_rxon_hwcrypto(priv, 1);
7948                         iwl4965_commit_rxon(priv);
7949                         key->hw_key_idx = sta_id;
7950                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7951                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7952                 }
7953                 break;
7954         case DISABLE_KEY:
7955                 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7956                 if (!rc) {
7957                         iwl4965_set_rxon_hwcrypto(priv, 0);
7958                         iwl4965_commit_rxon(priv);
7959                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7960                 }
7961                 break;
7962         default:
7963                 rc = -EINVAL;
7964         }
7965
7966         IWL_DEBUG_MAC80211("leave\n");
7967         mutex_unlock(&priv->mutex);
7968
7969         return rc;
7970 }
7971
7972 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7973                            const struct ieee80211_tx_queue_params *params)
7974 {
7975         struct iwl4965_priv *priv = hw->priv;
7976 #ifdef CONFIG_IWL4965_QOS
7977         unsigned long flags;
7978         int q;
7979 #endif /* CONFIG_IWL4965_QOS */
7980
7981         IWL_DEBUG_MAC80211("enter\n");
7982
7983         if (!iwl4965_is_ready_rf(priv)) {
7984                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7985                 return -EIO;
7986         }
7987
7988         if (queue >= AC_NUM) {
7989                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7990                 return 0;
7991         }
7992
7993 #ifdef CONFIG_IWL4965_QOS
7994         if (!priv->qos_data.qos_enable) {
7995                 priv->qos_data.qos_active = 0;
7996                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7997                 return 0;
7998         }
7999         q = AC_NUM - 1 - queue;
8000
8001         spin_lock_irqsave(&priv->lock, flags);
8002
8003         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
8004         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
8005         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
8006         priv->qos_data.def_qos_parm.ac[q].edca_txop =
8007                         cpu_to_le16((params->burst_time * 100));
8008
8009         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
8010         priv->qos_data.qos_active = 1;
8011
8012         spin_unlock_irqrestore(&priv->lock, flags);
8013
8014         mutex_lock(&priv->mutex);
8015         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
8016                 iwl4965_activate_qos(priv, 1);
8017         else if (priv->assoc_id && iwl4965_is_associated(priv))
8018                 iwl4965_activate_qos(priv, 0);
8019
8020         mutex_unlock(&priv->mutex);
8021
8022 #endif /*CONFIG_IWL4965_QOS */
8023
8024         IWL_DEBUG_MAC80211("leave\n");
8025         return 0;
8026 }
8027
8028 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
8029                                 struct ieee80211_tx_queue_stats *stats)
8030 {
8031         struct iwl4965_priv *priv = hw->priv;
8032         int i, avail;
8033         struct iwl4965_tx_queue *txq;
8034         struct iwl4965_queue *q;
8035         unsigned long flags;
8036
8037         IWL_DEBUG_MAC80211("enter\n");
8038
8039         if (!iwl4965_is_ready_rf(priv)) {
8040                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8041                 return -EIO;
8042         }
8043
8044         spin_lock_irqsave(&priv->lock, flags);
8045
8046         for (i = 0; i < AC_NUM; i++) {
8047                 txq = &priv->txq[i];
8048                 q = &txq->q;
8049                 avail = iwl4965_queue_space(q);
8050
8051                 stats->data[i].len = q->n_window - avail;
8052                 stats->data[i].limit = q->n_window - q->high_mark;
8053                 stats->data[i].count = q->n_window;
8054
8055         }
8056         spin_unlock_irqrestore(&priv->lock, flags);
8057
8058         IWL_DEBUG_MAC80211("leave\n");
8059
8060         return 0;
8061 }
8062
8063 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
8064                              struct ieee80211_low_level_stats *stats)
8065 {
8066         IWL_DEBUG_MAC80211("enter\n");
8067         IWL_DEBUG_MAC80211("leave\n");
8068
8069         return 0;
8070 }
8071
8072 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
8073 {
8074         IWL_DEBUG_MAC80211("enter\n");
8075         IWL_DEBUG_MAC80211("leave\n");
8076
8077         return 0;
8078 }
8079
8080 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
8081 {
8082         struct iwl4965_priv *priv = hw->priv;
8083         unsigned long flags;
8084
8085         mutex_lock(&priv->mutex);
8086         IWL_DEBUG_MAC80211("enter\n");
8087
8088         priv->lq_mngr.lq_ready = 0;
8089 #ifdef CONFIG_IWL4965_HT
8090         spin_lock_irqsave(&priv->lock, flags);
8091         memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
8092         spin_unlock_irqrestore(&priv->lock, flags);
8093 #ifdef CONFIG_IWL4965_HT_AGG
8094 /*      if (priv->lq_mngr.agg_ctrl.granted_ba)
8095                 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
8096
8097         memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl4965_agg_control));
8098         priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
8099         priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
8100         priv->lq_mngr.agg_ctrl.auto_agg = 1;
8101
8102         if (priv->lq_mngr.agg_ctrl.auto_agg)
8103                 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
8104 #endif /*CONFIG_IWL4965_HT_AGG */
8105 #endif /* CONFIG_IWL4965_HT */
8106
8107 #ifdef CONFIG_IWL4965_QOS
8108         iwl4965_reset_qos(priv);
8109 #endif
8110
8111         cancel_delayed_work(&priv->post_associate);
8112
8113         spin_lock_irqsave(&priv->lock, flags);
8114         priv->assoc_id = 0;
8115         priv->assoc_capability = 0;
8116         priv->call_post_assoc_from_beacon = 0;
8117         priv->assoc_station_added = 0;
8118
8119         /* new association get rid of ibss beacon skb */
8120         if (priv->ibss_beacon)
8121                 dev_kfree_skb(priv->ibss_beacon);
8122
8123         priv->ibss_beacon = NULL;
8124
8125         priv->beacon_int = priv->hw->conf.beacon_int;
8126         priv->timestamp1 = 0;
8127         priv->timestamp0 = 0;
8128         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
8129                 priv->beacon_int = 0;
8130
8131         spin_unlock_irqrestore(&priv->lock, flags);
8132
8133         /* we are restarting association process
8134          * clear RXON_FILTER_ASSOC_MSK bit
8135          */
8136         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
8137                 iwl4965_scan_cancel_timeout(priv, 100);
8138                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
8139                 iwl4965_commit_rxon(priv);
8140         }
8141
8142         /* Per mac80211.h: This is only used in IBSS mode... */
8143         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8144
8145                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
8146                 mutex_unlock(&priv->mutex);
8147                 return;
8148         }
8149
8150         if (!iwl4965_is_ready_rf(priv)) {
8151                 IWL_DEBUG_MAC80211("leave - not ready\n");
8152                 mutex_unlock(&priv->mutex);
8153                 return;
8154         }
8155
8156         priv->only_active_channel = 0;
8157
8158         iwl4965_set_rate(priv);
8159
8160         mutex_unlock(&priv->mutex);
8161
8162         IWL_DEBUG_MAC80211("leave\n");
8163
8164 }
8165
8166 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
8167                                  struct ieee80211_tx_control *control)
8168 {
8169         struct iwl4965_priv *priv = hw->priv;
8170         unsigned long flags;
8171
8172         mutex_lock(&priv->mutex);
8173         IWL_DEBUG_MAC80211("enter\n");
8174
8175         if (!iwl4965_is_ready_rf(priv)) {
8176                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8177                 mutex_unlock(&priv->mutex);
8178                 return -EIO;
8179         }
8180
8181         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8182                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
8183                 mutex_unlock(&priv->mutex);
8184                 return -EIO;
8185         }
8186
8187         spin_lock_irqsave(&priv->lock, flags);
8188
8189         if (priv->ibss_beacon)
8190                 dev_kfree_skb(priv->ibss_beacon);
8191
8192         priv->ibss_beacon = skb;
8193
8194         priv->assoc_id = 0;
8195
8196         IWL_DEBUG_MAC80211("leave\n");
8197         spin_unlock_irqrestore(&priv->lock, flags);
8198
8199 #ifdef CONFIG_IWL4965_QOS
8200         iwl4965_reset_qos(priv);
8201 #endif
8202
8203         queue_work(priv->workqueue, &priv->post_associate.work);
8204
8205         mutex_unlock(&priv->mutex);
8206
8207         return 0;
8208 }
8209
8210 #ifdef CONFIG_IWL4965_HT
8211 union ht_cap_info {
8212         struct {
8213                 u16 advanced_coding_cap         :1;
8214                 u16 supported_chan_width_set    :1;
8215                 u16 mimo_power_save_mode        :2;
8216                 u16 green_field                 :1;
8217                 u16 short_GI20                  :1;
8218                 u16 short_GI40                  :1;
8219                 u16 tx_stbc                     :1;
8220                 u16 rx_stbc                     :1;
8221                 u16 beam_forming                :1;
8222                 u16 delayed_ba                  :1;
8223                 u16 maximal_amsdu_size          :1;
8224                 u16 cck_mode_at_40MHz           :1;
8225                 u16 psmp_support                :1;
8226                 u16 stbc_ctrl_frame_support     :1;
8227                 u16 sig_txop_protection_support :1;
8228         };
8229         u16 val;
8230 } __attribute__ ((packed));
8231
8232 union ht_param_info{
8233         struct {
8234                 u8 max_rx_ampdu_factor  :2;
8235                 u8 mpdu_density         :3;
8236                 u8 reserved             :3;
8237         };
8238         u8 val;
8239 } __attribute__ ((packed));
8240
8241 union ht_exra_param_info {
8242         struct {
8243                 u8 ext_chan_offset              :2;
8244                 u8 tx_chan_width                :1;
8245                 u8 rifs_mode                    :1;
8246                 u8 controlled_access_only       :1;
8247                 u8 service_interval_granularity :3;
8248         };
8249         u8 val;
8250 } __attribute__ ((packed));
8251
8252 union ht_operation_mode{
8253         struct {
8254                 u16 op_mode     :2;
8255                 u16 non_GF      :1;
8256                 u16 reserved    :13;
8257         };
8258         u16 val;
8259 } __attribute__ ((packed));
8260
8261
8262 static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8263                             struct ieee80211_ht_additional_info *ht_extra,
8264                             struct sta_ht_info *ht_info_ap,
8265                             struct sta_ht_info *ht_info)
8266 {
8267         union ht_cap_info cap;
8268         union ht_operation_mode op_mode;
8269         union ht_param_info param_info;
8270         union ht_exra_param_info extra_param_info;
8271
8272         IWL_DEBUG_MAC80211("enter: \n");
8273
8274         if (!ht_info) {
8275                 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8276                 return -1;
8277         }
8278
8279         if (ht_cap) {
8280                 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8281                 param_info.val = ht_cap->mac_ht_params_info;
8282                 ht_info->is_ht = 1;
8283                 if (cap.short_GI20)
8284                         ht_info->sgf |= 0x1;
8285                 if (cap.short_GI40)
8286                         ht_info->sgf |= 0x2;
8287                 ht_info->is_green_field = cap.green_field;
8288                 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8289                 ht_info->supported_chan_width = cap.supported_chan_width_set;
8290                 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8291                 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8292
8293                 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8294                 ht_info->mpdu_density = param_info.mpdu_density;
8295
8296                 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8297                                     ht_cap->supported_mcs_set[0],
8298                                     ht_cap->supported_mcs_set[1]);
8299
8300                 if (ht_info_ap) {
8301                         ht_info->control_channel = ht_info_ap->control_channel;
8302                         ht_info->extension_chan_offset =
8303                                 ht_info_ap->extension_chan_offset;
8304                         ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8305                         ht_info->operating_mode = ht_info_ap->operating_mode;
8306                 }
8307
8308                 if (ht_extra) {
8309                         extra_param_info.val = ht_extra->ht_param;
8310                         ht_info->control_channel = ht_extra->control_chan;
8311                         ht_info->extension_chan_offset =
8312                             extra_param_info.ext_chan_offset;
8313                         ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8314                         op_mode.val = (u16)
8315                             le16_to_cpu(ht_extra->operation_mode);
8316                         ht_info->operating_mode = op_mode.op_mode;
8317                         IWL_DEBUG_MAC80211("control channel %d\n",
8318                                             ht_extra->control_chan);
8319                 }
8320         } else
8321                 ht_info->is_ht = 0;
8322
8323         IWL_DEBUG_MAC80211("leave\n");
8324         return 0;
8325 }
8326
8327 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8328                            struct ieee80211_ht_capability *ht_cap,
8329                            struct ieee80211_ht_additional_info *ht_extra)
8330 {
8331         struct iwl4965_priv *priv = hw->priv;
8332         int rs;
8333
8334         IWL_DEBUG_MAC80211("enter: \n");
8335
8336         rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8337         iwl4965_set_rxon_chain(priv);
8338
8339         if (priv && priv->assoc_id &&
8340             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8341                 unsigned long flags;
8342
8343                 spin_lock_irqsave(&priv->lock, flags);
8344                 if (priv->beacon_int)
8345                         queue_work(priv->workqueue, &priv->post_associate.work);
8346                 else
8347                         priv->call_post_assoc_from_beacon = 1;
8348                 spin_unlock_irqrestore(&priv->lock, flags);
8349         }
8350
8351         IWL_DEBUG_MAC80211("leave: control channel %d\n",
8352                         ht_extra->control_chan);
8353         return rs;
8354
8355 }
8356
8357 static void iwl4965_set_ht_capab(struct ieee80211_hw *hw,
8358                              struct ieee80211_ht_capability *ht_cap,
8359                              u8 use_wide_chan)
8360 {
8361         union ht_cap_info cap;
8362         union ht_param_info param_info;
8363
8364         memset(&cap, 0, sizeof(union ht_cap_info));
8365         memset(&param_info, 0, sizeof(union ht_param_info));
8366
8367         cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8368         cap.green_field = 1;
8369         cap.short_GI20 = 1;
8370         cap.short_GI40 = 1;
8371         cap.supported_chan_width_set = use_wide_chan;
8372         cap.mimo_power_save_mode = 0x3;
8373
8374         param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8375         param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8376         ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8377         ht_cap->mac_ht_params_info = (u8) param_info.val;
8378
8379         ht_cap->supported_mcs_set[0] = 0xff;
8380         ht_cap->supported_mcs_set[1] = 0xff;
8381         ht_cap->supported_mcs_set[4] =
8382             (cap.supported_chan_width_set) ? 0x1: 0x0;
8383 }
8384
8385 static void iwl4965_mac_get_ht_capab(struct ieee80211_hw *hw,
8386                                  struct ieee80211_ht_capability *ht_cap)
8387 {
8388         u8 use_wide_channel = 1;
8389         struct iwl4965_priv *priv = hw->priv;
8390
8391         IWL_DEBUG_MAC80211("enter: \n");
8392         if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8393                 use_wide_channel = 0;
8394
8395         /* no fat tx allowed on 2.4GHZ */
8396         if (priv->phymode != MODE_IEEE80211A)
8397                 use_wide_channel = 0;
8398
8399         iwl4965_set_ht_capab(hw, ht_cap, use_wide_channel);
8400         IWL_DEBUG_MAC80211("leave: \n");
8401 }
8402 #endif /*CONFIG_IWL4965_HT*/
8403
8404 /*****************************************************************************
8405  *
8406  * sysfs attributes
8407  *
8408  *****************************************************************************/
8409
8410 #ifdef CONFIG_IWL4965_DEBUG
8411
8412 /*
8413  * The following adds a new attribute to the sysfs representation
8414  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8415  * used for controlling the debug level.
8416  *
8417  * See the level definitions in iwl for details.
8418  */
8419
8420 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8421 {
8422         return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8423 }
8424 static ssize_t store_debug_level(struct device_driver *d,
8425                                  const char *buf, size_t count)
8426 {
8427         char *p = (char *)buf;
8428         u32 val;
8429
8430         val = simple_strtoul(p, &p, 0);
8431         if (p == buf)
8432                 printk(KERN_INFO DRV_NAME
8433                        ": %s is not in hex or decimal form.\n", buf);
8434         else
8435                 iwl4965_debug_level = val;
8436
8437         return strnlen(buf, count);
8438 }
8439
8440 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8441                    show_debug_level, store_debug_level);
8442
8443 #endif /* CONFIG_IWL4965_DEBUG */
8444
8445 static ssize_t show_rf_kill(struct device *d,
8446                             struct device_attribute *attr, char *buf)
8447 {
8448         /*
8449          * 0 - RF kill not enabled
8450          * 1 - SW based RF kill active (sysfs)
8451          * 2 - HW based RF kill active
8452          * 3 - Both HW and SW based RF kill active
8453          */
8454         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8455         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8456                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8457
8458         return sprintf(buf, "%i\n", val);
8459 }
8460
8461 static ssize_t store_rf_kill(struct device *d,
8462                              struct device_attribute *attr,
8463                              const char *buf, size_t count)
8464 {
8465         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8466
8467         mutex_lock(&priv->mutex);
8468         iwl4965_radio_kill_sw(priv, buf[0] == '1');
8469         mutex_unlock(&priv->mutex);
8470
8471         return count;
8472 }
8473
8474 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8475
8476 static ssize_t show_temperature(struct device *d,
8477                                 struct device_attribute *attr, char *buf)
8478 {
8479         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8480
8481         if (!iwl4965_is_alive(priv))
8482                 return -EAGAIN;
8483
8484         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8485 }
8486
8487 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8488
8489 static ssize_t show_rs_window(struct device *d,
8490                               struct device_attribute *attr,
8491                               char *buf)
8492 {
8493         struct iwl4965_priv *priv = d->driver_data;
8494         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8495 }
8496 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8497
8498 static ssize_t show_tx_power(struct device *d,
8499                              struct device_attribute *attr, char *buf)
8500 {
8501         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8502         return sprintf(buf, "%d\n", priv->user_txpower_limit);
8503 }
8504
8505 static ssize_t store_tx_power(struct device *d,
8506                               struct device_attribute *attr,
8507                               const char *buf, size_t count)
8508 {
8509         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8510         char *p = (char *)buf;
8511         u32 val;
8512
8513         val = simple_strtoul(p, &p, 10);
8514         if (p == buf)
8515                 printk(KERN_INFO DRV_NAME
8516                        ": %s is not in decimal form.\n", buf);
8517         else
8518                 iwl4965_hw_reg_set_txpower(priv, val);
8519
8520         return count;
8521 }
8522
8523 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8524
8525 static ssize_t show_flags(struct device *d,
8526                           struct device_attribute *attr, char *buf)
8527 {
8528         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8529
8530         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8531 }
8532
8533 static ssize_t store_flags(struct device *d,
8534                            struct device_attribute *attr,
8535                            const char *buf, size_t count)
8536 {
8537         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8538         u32 flags = simple_strtoul(buf, NULL, 0);
8539
8540         mutex_lock(&priv->mutex);
8541         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8542                 /* Cancel any currently running scans... */
8543                 if (iwl4965_scan_cancel_timeout(priv, 100))
8544                         IWL_WARNING("Could not cancel scan.\n");
8545                 else {
8546                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8547                                        flags);
8548                         priv->staging_rxon.flags = cpu_to_le32(flags);
8549                         iwl4965_commit_rxon(priv);
8550                 }
8551         }
8552         mutex_unlock(&priv->mutex);
8553
8554         return count;
8555 }
8556
8557 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8558
8559 static ssize_t show_filter_flags(struct device *d,
8560                                  struct device_attribute *attr, char *buf)
8561 {
8562         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8563
8564         return sprintf(buf, "0x%04X\n",
8565                 le32_to_cpu(priv->active_rxon.filter_flags));
8566 }
8567
8568 static ssize_t store_filter_flags(struct device *d,
8569                                   struct device_attribute *attr,
8570                                   const char *buf, size_t count)
8571 {
8572         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8573         u32 filter_flags = simple_strtoul(buf, NULL, 0);
8574
8575         mutex_lock(&priv->mutex);
8576         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8577                 /* Cancel any currently running scans... */
8578                 if (iwl4965_scan_cancel_timeout(priv, 100))
8579                         IWL_WARNING("Could not cancel scan.\n");
8580                 else {
8581                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8582                                        "0x%04X\n", filter_flags);
8583                         priv->staging_rxon.filter_flags =
8584                                 cpu_to_le32(filter_flags);
8585                         iwl4965_commit_rxon(priv);
8586                 }
8587         }
8588         mutex_unlock(&priv->mutex);
8589
8590         return count;
8591 }
8592
8593 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8594                    store_filter_flags);
8595
8596 static ssize_t show_tune(struct device *d,
8597                          struct device_attribute *attr, char *buf)
8598 {
8599         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8600
8601         return sprintf(buf, "0x%04X\n",
8602                        (priv->phymode << 8) |
8603                         le16_to_cpu(priv->active_rxon.channel));
8604 }
8605
8606 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode);
8607
8608 static ssize_t store_tune(struct device *d,
8609                           struct device_attribute *attr,
8610                           const char *buf, size_t count)
8611 {
8612         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8613         char *p = (char *)buf;
8614         u16 tune = simple_strtoul(p, &p, 0);
8615         u8 phymode = (tune >> 8) & 0xff;
8616         u16 channel = tune & 0xff;
8617
8618         IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8619
8620         mutex_lock(&priv->mutex);
8621         if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8622             (priv->phymode != phymode)) {
8623                 const struct iwl4965_channel_info *ch_info;
8624
8625                 ch_info = iwl4965_get_channel_info(priv, phymode, channel);
8626                 if (!ch_info) {
8627                         IWL_WARNING("Requested invalid phymode/channel "
8628                                     "combination: %d %d\n", phymode, channel);
8629                         mutex_unlock(&priv->mutex);
8630                         return -EINVAL;
8631                 }
8632
8633                 /* Cancel any currently running scans... */
8634                 if (iwl4965_scan_cancel_timeout(priv, 100))
8635                         IWL_WARNING("Could not cancel scan.\n");
8636                 else {
8637                         IWL_DEBUG_INFO("Committing phymode and "
8638                                        "rxon.channel = %d %d\n",
8639                                        phymode, channel);
8640
8641                         iwl4965_set_rxon_channel(priv, phymode, channel);
8642                         iwl4965_set_flags_for_phymode(priv, phymode);
8643
8644                         iwl4965_set_rate(priv);
8645                         iwl4965_commit_rxon(priv);
8646                 }
8647         }
8648         mutex_unlock(&priv->mutex);
8649
8650         return count;
8651 }
8652
8653 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8654
8655 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8656
8657 static ssize_t show_measurement(struct device *d,
8658                                 struct device_attribute *attr, char *buf)
8659 {
8660         struct iwl4965_priv *priv = dev_get_drvdata(d);
8661         struct iwl4965_spectrum_notification measure_report;
8662         u32 size = sizeof(measure_report), len = 0, ofs = 0;
8663         u8 *data = (u8 *) & measure_report;
8664         unsigned long flags;
8665
8666         spin_lock_irqsave(&priv->lock, flags);
8667         if (!(priv->measurement_status & MEASUREMENT_READY)) {
8668                 spin_unlock_irqrestore(&priv->lock, flags);
8669                 return 0;
8670         }
8671         memcpy(&measure_report, &priv->measure_report, size);
8672         priv->measurement_status = 0;
8673         spin_unlock_irqrestore(&priv->lock, flags);
8674
8675         while (size && (PAGE_SIZE - len)) {
8676                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8677                                    PAGE_SIZE - len, 1);
8678                 len = strlen(buf);
8679                 if (PAGE_SIZE - len)
8680                         buf[len++] = '\n';
8681
8682                 ofs += 16;
8683                 size -= min(size, 16U);
8684         }
8685
8686         return len;
8687 }
8688
8689 static ssize_t store_measurement(struct device *d,
8690                                  struct device_attribute *attr,
8691                                  const char *buf, size_t count)
8692 {
8693         struct iwl4965_priv *priv = dev_get_drvdata(d);
8694         struct ieee80211_measurement_params params = {
8695                 .channel = le16_to_cpu(priv->active_rxon.channel),
8696                 .start_time = cpu_to_le64(priv->last_tsf),
8697                 .duration = cpu_to_le16(1),
8698         };
8699         u8 type = IWL_MEASURE_BASIC;
8700         u8 buffer[32];
8701         u8 channel;
8702
8703         if (count) {
8704                 char *p = buffer;
8705                 strncpy(buffer, buf, min(sizeof(buffer), count));
8706                 channel = simple_strtoul(p, NULL, 0);
8707                 if (channel)
8708                         params.channel = channel;
8709
8710                 p = buffer;
8711                 while (*p && *p != ' ')
8712                         p++;
8713                 if (*p)
8714                         type = simple_strtoul(p + 1, NULL, 0);
8715         }
8716
8717         IWL_DEBUG_INFO("Invoking measurement of type %d on "
8718                        "channel %d (for '%s')\n", type, params.channel, buf);
8719         iwl4965_get_measurement(priv, &params, type);
8720
8721         return count;
8722 }
8723
8724 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8725                    show_measurement, store_measurement);
8726 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8727
8728 static ssize_t store_retry_rate(struct device *d,
8729                                 struct device_attribute *attr,
8730                                 const char *buf, size_t count)
8731 {
8732         struct iwl4965_priv *priv = dev_get_drvdata(d);
8733
8734         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8735         if (priv->retry_rate <= 0)
8736                 priv->retry_rate = 1;
8737
8738         return count;
8739 }
8740
8741 static ssize_t show_retry_rate(struct device *d,
8742                                struct device_attribute *attr, char *buf)
8743 {
8744         struct iwl4965_priv *priv = dev_get_drvdata(d);
8745         return sprintf(buf, "%d", priv->retry_rate);
8746 }
8747
8748 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8749                    store_retry_rate);
8750
8751 static ssize_t store_power_level(struct device *d,
8752                                  struct device_attribute *attr,
8753                                  const char *buf, size_t count)
8754 {
8755         struct iwl4965_priv *priv = dev_get_drvdata(d);
8756         int rc;
8757         int mode;
8758
8759         mode = simple_strtoul(buf, NULL, 0);
8760         mutex_lock(&priv->mutex);
8761
8762         if (!iwl4965_is_ready(priv)) {
8763                 rc = -EAGAIN;
8764                 goto out;
8765         }
8766
8767         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8768                 mode = IWL_POWER_AC;
8769         else
8770                 mode |= IWL_POWER_ENABLED;
8771
8772         if (mode != priv->power_mode) {
8773                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8774                 if (rc) {
8775                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8776                         goto out;
8777                 }
8778                 priv->power_mode = mode;
8779         }
8780
8781         rc = count;
8782
8783  out:
8784         mutex_unlock(&priv->mutex);
8785         return rc;
8786 }
8787
8788 #define MAX_WX_STRING 80
8789
8790 /* Values are in microsecond */
8791 static const s32 timeout_duration[] = {
8792         350000,
8793         250000,
8794         75000,
8795         37000,
8796         25000,
8797 };
8798 static const s32 period_duration[] = {
8799         400000,
8800         700000,
8801         1000000,
8802         1000000,
8803         1000000
8804 };
8805
8806 static ssize_t show_power_level(struct device *d,
8807                                 struct device_attribute *attr, char *buf)
8808 {
8809         struct iwl4965_priv *priv = dev_get_drvdata(d);
8810         int level = IWL_POWER_LEVEL(priv->power_mode);
8811         char *p = buf;
8812
8813         p += sprintf(p, "%d ", level);
8814         switch (level) {
8815         case IWL_POWER_MODE_CAM:
8816         case IWL_POWER_AC:
8817                 p += sprintf(p, "(AC)");
8818                 break;
8819         case IWL_POWER_BATTERY:
8820                 p += sprintf(p, "(BATTERY)");
8821                 break;
8822         default:
8823                 p += sprintf(p,
8824                              "(Timeout %dms, Period %dms)",
8825                              timeout_duration[level - 1] / 1000,
8826                              period_duration[level - 1] / 1000);
8827         }
8828
8829         if (!(priv->power_mode & IWL_POWER_ENABLED))
8830                 p += sprintf(p, " OFF\n");
8831         else
8832                 p += sprintf(p, " \n");
8833
8834         return (p - buf + 1);
8835
8836 }
8837
8838 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8839                    store_power_level);
8840
8841 static ssize_t show_channels(struct device *d,
8842                              struct device_attribute *attr, char *buf)
8843 {
8844         struct iwl4965_priv *priv = dev_get_drvdata(d);
8845         int len = 0, i;
8846         struct ieee80211_channel *channels = NULL;
8847         const struct ieee80211_hw_mode *hw_mode = NULL;
8848         int count = 0;
8849
8850         if (!iwl4965_is_ready(priv))
8851                 return -EAGAIN;
8852
8853         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211G);
8854         if (!hw_mode)
8855                 hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211B);
8856         if (hw_mode) {
8857                 channels = hw_mode->channels;
8858                 count = hw_mode->num_channels;
8859         }
8860
8861         len +=
8862             sprintf(&buf[len],
8863                     "Displaying %d channels in 2.4GHz band "
8864                     "(802.11bg):\n", count);
8865
8866         for (i = 0; i < count; i++)
8867                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8868                                channels[i].chan,
8869                                channels[i].power_level,
8870                                channels[i].
8871                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8872                                " (IEEE 802.11h required)" : "",
8873                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8874                                 || (channels[i].
8875                                     flag &
8876                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8877                                ", IBSS",
8878                                channels[i].
8879                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8880                                "active/passive" : "passive only");
8881
8882         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211A);
8883         if (hw_mode) {
8884                 channels = hw_mode->channels;
8885                 count = hw_mode->num_channels;
8886         } else {
8887                 channels = NULL;
8888                 count = 0;
8889         }
8890
8891         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8892                        "(802.11a):\n", count);
8893
8894         for (i = 0; i < count; i++)
8895                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8896                                channels[i].chan,
8897                                channels[i].power_level,
8898                                channels[i].
8899                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8900                                " (IEEE 802.11h required)" : "",
8901                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8902                                 || (channels[i].
8903                                     flag &
8904                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8905                                ", IBSS",
8906                                channels[i].
8907                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8908                                "active/passive" : "passive only");
8909
8910         return len;
8911 }
8912
8913 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8914
8915 static ssize_t show_statistics(struct device *d,
8916                                struct device_attribute *attr, char *buf)
8917 {
8918         struct iwl4965_priv *priv = dev_get_drvdata(d);
8919         u32 size = sizeof(struct iwl4965_notif_statistics);
8920         u32 len = 0, ofs = 0;
8921         u8 *data = (u8 *) & priv->statistics;
8922         int rc = 0;
8923
8924         if (!iwl4965_is_alive(priv))
8925                 return -EAGAIN;
8926
8927         mutex_lock(&priv->mutex);
8928         rc = iwl4965_send_statistics_request(priv);
8929         mutex_unlock(&priv->mutex);
8930
8931         if (rc) {
8932                 len = sprintf(buf,
8933                               "Error sending statistics request: 0x%08X\n", rc);
8934                 return len;
8935         }
8936
8937         while (size && (PAGE_SIZE - len)) {
8938                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8939                                    PAGE_SIZE - len, 1);
8940                 len = strlen(buf);
8941                 if (PAGE_SIZE - len)
8942                         buf[len++] = '\n';
8943
8944                 ofs += 16;
8945                 size -= min(size, 16U);
8946         }
8947
8948         return len;
8949 }
8950
8951 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8952
8953 static ssize_t show_antenna(struct device *d,
8954                             struct device_attribute *attr, char *buf)
8955 {
8956         struct iwl4965_priv *priv = dev_get_drvdata(d);
8957
8958         if (!iwl4965_is_alive(priv))
8959                 return -EAGAIN;
8960
8961         return sprintf(buf, "%d\n", priv->antenna);
8962 }
8963
8964 static ssize_t store_antenna(struct device *d,
8965                              struct device_attribute *attr,
8966                              const char *buf, size_t count)
8967 {
8968         int ant;
8969         struct iwl4965_priv *priv = dev_get_drvdata(d);
8970
8971         if (count == 0)
8972                 return 0;
8973
8974         if (sscanf(buf, "%1i", &ant) != 1) {
8975                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8976                 return count;
8977         }
8978
8979         if ((ant >= 0) && (ant <= 2)) {
8980                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8981                 priv->antenna = (enum iwl4965_antenna)ant;
8982         } else
8983                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8984
8985
8986         return count;
8987 }
8988
8989 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8990
8991 static ssize_t show_status(struct device *d,
8992                            struct device_attribute *attr, char *buf)
8993 {
8994         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8995         if (!iwl4965_is_alive(priv))
8996                 return -EAGAIN;
8997         return sprintf(buf, "0x%08x\n", (int)priv->status);
8998 }
8999
9000 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
9001
9002 static ssize_t dump_error_log(struct device *d,
9003                               struct device_attribute *attr,
9004                               const char *buf, size_t count)
9005 {
9006         char *p = (char *)buf;
9007
9008         if (p[0] == '1')
9009                 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
9010
9011         return strnlen(buf, count);
9012 }
9013
9014 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
9015
9016 static ssize_t dump_event_log(struct device *d,
9017                               struct device_attribute *attr,
9018                               const char *buf, size_t count)
9019 {
9020         char *p = (char *)buf;
9021
9022         if (p[0] == '1')
9023                 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
9024
9025         return strnlen(buf, count);
9026 }
9027
9028 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
9029
9030 /*****************************************************************************
9031  *
9032  * driver setup and teardown
9033  *
9034  *****************************************************************************/
9035
9036 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
9037 {
9038         priv->workqueue = create_workqueue(DRV_NAME);
9039
9040         init_waitqueue_head(&priv->wait_command_queue);
9041
9042         INIT_WORK(&priv->up, iwl4965_bg_up);
9043         INIT_WORK(&priv->restart, iwl4965_bg_restart);
9044         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
9045         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
9046         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
9047         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
9048         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
9049         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
9050         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
9051         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
9052         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
9053         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
9054
9055         iwl4965_hw_setup_deferred_work(priv);
9056
9057         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
9058                      iwl4965_irq_tasklet, (unsigned long)priv);
9059 }
9060
9061 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
9062 {
9063         iwl4965_hw_cancel_deferred_work(priv);
9064
9065         cancel_delayed_work_sync(&priv->init_alive_start);
9066         cancel_delayed_work(&priv->scan_check);
9067         cancel_delayed_work(&priv->alive_start);
9068         cancel_delayed_work(&priv->post_associate);
9069         cancel_work_sync(&priv->beacon_update);
9070 }
9071
9072 static struct attribute *iwl4965_sysfs_entries[] = {
9073         &dev_attr_antenna.attr,
9074         &dev_attr_channels.attr,
9075         &dev_attr_dump_errors.attr,
9076         &dev_attr_dump_events.attr,
9077         &dev_attr_flags.attr,
9078         &dev_attr_filter_flags.attr,
9079 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
9080         &dev_attr_measurement.attr,
9081 #endif
9082         &dev_attr_power_level.attr,
9083         &dev_attr_retry_rate.attr,
9084         &dev_attr_rf_kill.attr,
9085         &dev_attr_rs_window.attr,
9086         &dev_attr_statistics.attr,
9087         &dev_attr_status.attr,
9088         &dev_attr_temperature.attr,
9089         &dev_attr_tune.attr,
9090         &dev_attr_tx_power.attr,
9091
9092         NULL
9093 };
9094
9095 static struct attribute_group iwl4965_attribute_group = {
9096         .name = NULL,           /* put in device directory */
9097         .attrs = iwl4965_sysfs_entries,
9098 };
9099
9100 static struct ieee80211_ops iwl4965_hw_ops = {
9101         .tx = iwl4965_mac_tx,
9102         .start = iwl4965_mac_start,
9103         .stop = iwl4965_mac_stop,
9104         .add_interface = iwl4965_mac_add_interface,
9105         .remove_interface = iwl4965_mac_remove_interface,
9106         .config = iwl4965_mac_config,
9107         .config_interface = iwl4965_mac_config_interface,
9108         .configure_filter = iwl4965_configure_filter,
9109         .set_key = iwl4965_mac_set_key,
9110         .get_stats = iwl4965_mac_get_stats,
9111         .get_tx_stats = iwl4965_mac_get_tx_stats,
9112         .conf_tx = iwl4965_mac_conf_tx,
9113         .get_tsf = iwl4965_mac_get_tsf,
9114         .reset_tsf = iwl4965_mac_reset_tsf,
9115         .beacon_update = iwl4965_mac_beacon_update,
9116         .erp_ie_changed = iwl4965_mac_erp_ie_changed,
9117 #ifdef CONFIG_IWL4965_HT
9118         .conf_ht = iwl4965_mac_conf_ht,
9119         .get_ht_capab = iwl4965_mac_get_ht_capab,
9120 #ifdef CONFIG_IWL4965_HT_AGG
9121         .ht_tx_agg_start = iwl4965_mac_ht_tx_agg_start,
9122         .ht_tx_agg_stop = iwl4965_mac_ht_tx_agg_stop,
9123         .ht_rx_agg_start = iwl4965_mac_ht_rx_agg_start,
9124         .ht_rx_agg_stop = iwl4965_mac_ht_rx_agg_stop,
9125 #endif  /* CONFIG_IWL4965_HT_AGG */
9126 #endif  /* CONFIG_IWL4965_HT */
9127         .hw_scan = iwl4965_mac_hw_scan
9128 };
9129
9130 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9131 {
9132         int err = 0;
9133         struct iwl4965_priv *priv;
9134         struct ieee80211_hw *hw;
9135         int i;
9136
9137         /* Disabling hardware scan means that mac80211 will perform scans
9138          * "the hard way", rather than using device's scan. */
9139         if (iwl4965_param_disable_hw_scan) {
9140                 IWL_DEBUG_INFO("Disabling hw_scan\n");
9141                 iwl4965_hw_ops.hw_scan = NULL;
9142         }
9143
9144         if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
9145             (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
9146                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
9147                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
9148                 err = -EINVAL;
9149                 goto out;
9150         }
9151
9152         /* mac80211 allocates memory for this device instance, including
9153          *   space for this driver's private structure */
9154         hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
9155         if (hw == NULL) {
9156                 IWL_ERROR("Can not allocate network device\n");
9157                 err = -ENOMEM;
9158                 goto out;
9159         }
9160         SET_IEEE80211_DEV(hw, &pdev->dev);
9161
9162         hw->rate_control_algorithm = "iwl-4965-rs";
9163
9164         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
9165         priv = hw->priv;
9166         priv->hw = hw;
9167
9168         priv->pci_dev = pdev;
9169         priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
9170 #ifdef CONFIG_IWL4965_DEBUG
9171         iwl4965_debug_level = iwl4965_param_debug;
9172         atomic_set(&priv->restrict_refcnt, 0);
9173 #endif
9174         priv->retry_rate = 1;
9175
9176         priv->ibss_beacon = NULL;
9177
9178         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
9179          *   the range of signal quality values that we'll provide.
9180          * Negative values for level/noise indicate that we'll provide dBm.
9181          * For WE, at least, non-0 values here *enable* display of values
9182          *   in app (iwconfig). */
9183         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
9184         hw->max_noise = -20;    /* noise level, negative indicates dBm */
9185         hw->max_signal = 100;   /* link quality indication (%) */
9186
9187         /* Tell mac80211 our Tx characteristics */
9188         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
9189
9190         /* Default value; 4 EDCA QOS priorities */
9191         hw->queues = 4;
9192 #ifdef CONFIG_IWL4965_HT
9193 #ifdef CONFIG_IWL4965_HT_AGG
9194         /* Enhanced value; more queues, to support 11n aggregation */
9195         hw->queues = 16;
9196 #endif /* CONFIG_IWL4965_HT_AGG */
9197 #endif /* CONFIG_IWL4965_HT */
9198
9199         spin_lock_init(&priv->lock);
9200         spin_lock_init(&priv->power_data.lock);
9201         spin_lock_init(&priv->sta_lock);
9202         spin_lock_init(&priv->hcmd_lock);
9203         spin_lock_init(&priv->lq_mngr.lock);
9204
9205         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9206                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9207
9208         INIT_LIST_HEAD(&priv->free_frames);
9209
9210         mutex_init(&priv->mutex);
9211         if (pci_enable_device(pdev)) {
9212                 err = -ENODEV;
9213                 goto out_ieee80211_free_hw;
9214         }
9215
9216         pci_set_master(pdev);
9217
9218         /* Clear the driver's (not device's) station table */
9219         iwl4965_clear_stations_table(priv);
9220
9221         priv->data_retry_limit = -1;
9222         priv->ieee_channels = NULL;
9223         priv->ieee_rates = NULL;
9224         priv->phymode = -1;
9225
9226         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9227         if (!err)
9228                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9229         if (err) {
9230                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9231                 goto out_pci_disable_device;
9232         }
9233
9234         pci_set_drvdata(pdev, priv);
9235         err = pci_request_regions(pdev, DRV_NAME);
9236         if (err)
9237                 goto out_pci_disable_device;
9238
9239         /* We disable the RETRY_TIMEOUT register (0x41) to keep
9240          * PCI Tx retries from interfering with C3 CPU state */
9241         pci_write_config_byte(pdev, 0x41, 0x00);
9242
9243         priv->hw_base = pci_iomap(pdev, 0, 0);
9244         if (!priv->hw_base) {
9245                 err = -ENODEV;
9246                 goto out_pci_release_regions;
9247         }
9248
9249         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9250                         (unsigned long long) pci_resource_len(pdev, 0));
9251         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9252
9253         /* Initialize module parameter values here */
9254
9255         /* Disable radio (SW RF KILL) via parameter when loading driver */
9256         if (iwl4965_param_disable) {
9257                 set_bit(STATUS_RF_KILL_SW, &priv->status);
9258                 IWL_DEBUG_INFO("Radio disabled.\n");
9259         }
9260
9261         priv->iw_mode = IEEE80211_IF_TYPE_STA;
9262
9263         priv->ps_mode = 0;
9264         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9265         priv->is_ht_enabled = 1;
9266         priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9267         priv->valid_antenna = 0x7;      /* assume all 3 connected */
9268         priv->ps_mode = IWL_MIMO_PS_NONE;
9269
9270         /* Choose which receivers/antennas to use */
9271         iwl4965_set_rxon_chain(priv);
9272
9273         printk(KERN_INFO DRV_NAME
9274                ": Detected Intel Wireless WiFi Link 4965AGN\n");
9275
9276         /* Device-specific setup */
9277         if (iwl4965_hw_set_hw_setting(priv)) {
9278                 IWL_ERROR("failed to set hw settings\n");
9279                 mutex_unlock(&priv->mutex);
9280                 goto out_iounmap;
9281         }
9282
9283 #ifdef CONFIG_IWL4965_QOS
9284         if (iwl4965_param_qos_enable)
9285                 priv->qos_data.qos_enable = 1;
9286
9287         iwl4965_reset_qos(priv);
9288
9289         priv->qos_data.qos_active = 0;
9290         priv->qos_data.qos_cap.val = 0;
9291 #endif /* CONFIG_IWL4965_QOS */
9292
9293         iwl4965_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9294         iwl4965_setup_deferred_work(priv);
9295         iwl4965_setup_rx_handlers(priv);
9296
9297         priv->rates_mask = IWL_RATES_MASK;
9298         /* If power management is turned on, default to AC mode */
9299         priv->power_mode = IWL_POWER_AC;
9300         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9301
9302         iwl4965_disable_interrupts(priv);
9303
9304         pci_enable_msi(pdev);
9305
9306         err = request_irq(pdev->irq, iwl4965_isr, IRQF_SHARED, DRV_NAME, priv);
9307         if (err) {
9308                 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9309                 goto out_disable_msi;
9310         }
9311
9312         mutex_lock(&priv->mutex);
9313
9314         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9315         if (err) {
9316                 IWL_ERROR("failed to create sysfs device attributes\n");
9317                 mutex_unlock(&priv->mutex);
9318                 goto out_release_irq;
9319         }
9320
9321         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9322          * ucode filename and max sizes are card-specific. */
9323         err = iwl4965_read_ucode(priv);
9324         if (err) {
9325                 IWL_ERROR("Could not read microcode: %d\n", err);
9326                 mutex_unlock(&priv->mutex);
9327                 goto out_pci_alloc;
9328         }
9329
9330         mutex_unlock(&priv->mutex);
9331
9332         IWL_DEBUG_INFO("Queueing UP work.\n");
9333
9334         queue_work(priv->workqueue, &priv->up);
9335
9336         return 0;
9337
9338  out_pci_alloc:
9339         iwl4965_dealloc_ucode_pci(priv);
9340
9341         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9342
9343  out_release_irq:
9344         free_irq(pdev->irq, priv);
9345
9346  out_disable_msi:
9347         pci_disable_msi(pdev);
9348         destroy_workqueue(priv->workqueue);
9349         priv->workqueue = NULL;
9350         iwl4965_unset_hw_setting(priv);
9351
9352  out_iounmap:
9353         pci_iounmap(pdev, priv->hw_base);
9354  out_pci_release_regions:
9355         pci_release_regions(pdev);
9356  out_pci_disable_device:
9357         pci_disable_device(pdev);
9358         pci_set_drvdata(pdev, NULL);
9359  out_ieee80211_free_hw:
9360         ieee80211_free_hw(priv->hw);
9361  out:
9362         return err;
9363 }
9364
9365 static void iwl4965_pci_remove(struct pci_dev *pdev)
9366 {
9367         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9368         struct list_head *p, *q;
9369         int i;
9370
9371         if (!priv)
9372                 return;
9373
9374         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9375
9376         set_bit(STATUS_EXIT_PENDING, &priv->status);
9377
9378         iwl4965_down(priv);
9379
9380         /* Free MAC hash list for ADHOC */
9381         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9382                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9383                         list_del(p);
9384                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9385                 }
9386         }
9387
9388         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9389
9390         iwl4965_dealloc_ucode_pci(priv);
9391
9392         if (priv->rxq.bd)
9393                 iwl4965_rx_queue_free(priv, &priv->rxq);
9394         iwl4965_hw_txq_ctx_free(priv);
9395
9396         iwl4965_unset_hw_setting(priv);
9397         iwl4965_clear_stations_table(priv);
9398
9399         if (priv->mac80211_registered) {
9400                 ieee80211_unregister_hw(priv->hw);
9401                 iwl4965_rate_control_unregister(priv->hw);
9402         }
9403
9404         /*netif_stop_queue(dev); */
9405         flush_workqueue(priv->workqueue);
9406
9407         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9408          * priv->workqueue... so we can't take down the workqueue
9409          * until now... */
9410         destroy_workqueue(priv->workqueue);
9411         priv->workqueue = NULL;
9412
9413         free_irq(pdev->irq, priv);
9414         pci_disable_msi(pdev);
9415         pci_iounmap(pdev, priv->hw_base);
9416         pci_release_regions(pdev);
9417         pci_disable_device(pdev);
9418         pci_set_drvdata(pdev, NULL);
9419
9420         kfree(priv->channel_info);
9421
9422         kfree(priv->ieee_channels);
9423         kfree(priv->ieee_rates);
9424
9425         if (priv->ibss_beacon)
9426                 dev_kfree_skb(priv->ibss_beacon);
9427
9428         ieee80211_free_hw(priv->hw);
9429 }
9430
9431 #ifdef CONFIG_PM
9432
9433 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9434 {
9435         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9436
9437         set_bit(STATUS_IN_SUSPEND, &priv->status);
9438
9439         /* Take down the device; powers it off, etc. */
9440         iwl4965_down(priv);
9441
9442         if (priv->mac80211_registered)
9443                 ieee80211_stop_queues(priv->hw);
9444
9445         pci_save_state(pdev);
9446         pci_disable_device(pdev);
9447         pci_set_power_state(pdev, PCI_D3hot);
9448
9449         return 0;
9450 }
9451
9452 static void iwl4965_resume(struct iwl4965_priv *priv)
9453 {
9454         unsigned long flags;
9455
9456         /* The following it a temporary work around due to the
9457          * suspend / resume not fully initializing the NIC correctly.
9458          * Without all of the following, resume will not attempt to take
9459          * down the NIC (it shouldn't really need to) and will just try
9460          * and bring the NIC back up.  However that fails during the
9461          * ucode verification process.  This then causes iwl4965_down to be
9462          * called *after* iwl4965_hw_nic_init() has succeeded -- which
9463          * then lets the next init sequence succeed.  So, we've
9464          * replicated all of that NIC init code here... */
9465
9466         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9467
9468         iwl4965_hw_nic_init(priv);
9469
9470         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9471         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9472                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9473         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9474         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9475         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9476
9477         /* tell the device to stop sending interrupts */
9478         iwl4965_disable_interrupts(priv);
9479
9480         spin_lock_irqsave(&priv->lock, flags);
9481         iwl4965_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9482
9483         if (!iwl4965_grab_nic_access(priv)) {
9484                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
9485                                 APMG_CLK_VAL_DMA_CLK_RQT);
9486                 iwl4965_release_nic_access(priv);
9487         }
9488         spin_unlock_irqrestore(&priv->lock, flags);
9489
9490         udelay(5);
9491
9492         iwl4965_hw_nic_reset(priv);
9493
9494         /* Bring the device back up */
9495         clear_bit(STATUS_IN_SUSPEND, &priv->status);
9496         queue_work(priv->workqueue, &priv->up);
9497 }
9498
9499 static int iwl4965_pci_resume(struct pci_dev *pdev)
9500 {
9501         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9502         int err;
9503
9504         printk(KERN_INFO "Coming out of suspend...\n");
9505
9506         pci_set_power_state(pdev, PCI_D0);
9507         err = pci_enable_device(pdev);
9508         pci_restore_state(pdev);
9509
9510         /*
9511          * Suspend/Resume resets the PCI configuration space, so we have to
9512          * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9513          * from interfering with C3 CPU state. pci_restore_state won't help
9514          * here since it only restores the first 64 bytes pci config header.
9515          */
9516         pci_write_config_byte(pdev, 0x41, 0x00);
9517
9518         iwl4965_resume(priv);
9519
9520         return 0;
9521 }
9522
9523 #endif /* CONFIG_PM */
9524
9525 /*****************************************************************************
9526  *
9527  * driver and module entry point
9528  *
9529  *****************************************************************************/
9530
9531 static struct pci_driver iwl4965_driver = {
9532         .name = DRV_NAME,
9533         .id_table = iwl4965_hw_card_ids,
9534         .probe = iwl4965_pci_probe,
9535         .remove = __devexit_p(iwl4965_pci_remove),
9536 #ifdef CONFIG_PM
9537         .suspend = iwl4965_pci_suspend,
9538         .resume = iwl4965_pci_resume,
9539 #endif
9540 };
9541
9542 static int __init iwl4965_init(void)
9543 {
9544
9545         int ret;
9546         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9547         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9548         ret = pci_register_driver(&iwl4965_driver);
9549         if (ret) {
9550                 IWL_ERROR("Unable to initialize PCI module\n");
9551                 return ret;
9552         }
9553 #ifdef CONFIG_IWL4965_DEBUG
9554         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9555         if (ret) {
9556                 IWL_ERROR("Unable to create driver sysfs file\n");
9557                 pci_unregister_driver(&iwl4965_driver);
9558                 return ret;
9559         }
9560 #endif
9561
9562         return ret;
9563 }
9564
9565 static void __exit iwl4965_exit(void)
9566 {
9567 #ifdef CONFIG_IWL4965_DEBUG
9568         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9569 #endif
9570         pci_unregister_driver(&iwl4965_driver);
9571 }
9572
9573 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9574 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9575 module_param_named(disable, iwl4965_param_disable, int, 0444);
9576 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9577 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9578 MODULE_PARM_DESC(hwcrypto,
9579                  "using hardware crypto engine (default 0 [software])\n");
9580 module_param_named(debug, iwl4965_param_debug, int, 0444);
9581 MODULE_PARM_DESC(debug, "debug output mask");
9582 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9583 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9584
9585 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9586 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9587
9588 /* QoS */
9589 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9590 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9591
9592 module_exit(iwl4965_exit);
9593 module_init(iwl4965_init);