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         if (!iwl4965_is_associated(priv) &&
2909             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2910                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2911                 goto drop_unlock;
2912         }
2913
2914         spin_unlock_irqrestore(&priv->lock, flags);
2915
2916         hdr_len = ieee80211_get_hdrlen(fc);
2917
2918         /* Find (or create) index into station table for destination station */
2919         sta_id = iwl4965_get_sta_id(priv, hdr);
2920         if (sta_id == IWL_INVALID_STATION) {
2921                 DECLARE_MAC_BUF(mac);
2922
2923                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2924                                print_mac(mac, hdr->addr1));
2925                 goto drop;
2926         }
2927
2928         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2929
2930         qc = ieee80211_get_qos_ctrl(hdr);
2931         if (qc) {
2932                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2933                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2934                                 IEEE80211_SCTL_SEQ;
2935                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2936                         (hdr->seq_ctrl &
2937                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2938                 seq_number += 0x10;
2939 #ifdef CONFIG_IWL4965_HT
2940 #ifdef CONFIG_IWL4965_HT_AGG
2941                 /* aggregation is on for this <sta,tid> */
2942                 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2943                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2944 #endif /* CONFIG_IWL4965_HT_AGG */
2945 #endif /* CONFIG_IWL4965_HT */
2946         }
2947
2948         /* Descriptor for chosen Tx queue */
2949         txq = &priv->txq[txq_id];
2950         q = &txq->q;
2951
2952         spin_lock_irqsave(&priv->lock, flags);
2953
2954         /* Set up first empty TFD within this queue's circular TFD buffer */
2955         tfd = &txq->bd[q->write_ptr];
2956         memset(tfd, 0, sizeof(*tfd));
2957         control_flags = (u32 *) tfd;
2958         idx = get_cmd_index(q, q->write_ptr, 0);
2959
2960         /* Set up driver data for this TFD */
2961         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2962         txq->txb[q->write_ptr].skb[0] = skb;
2963         memcpy(&(txq->txb[q->write_ptr].status.control),
2964                ctl, sizeof(struct ieee80211_tx_control));
2965
2966         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2967         out_cmd = &txq->cmd[idx];
2968         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2969         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2970
2971         /*
2972          * Set up the Tx-command (not MAC!) header.
2973          * Store the chosen Tx queue and TFD index within the sequence field;
2974          * after Tx, uCode's Tx response will return this value so driver can
2975          * locate the frame within the tx queue and do post-tx processing.
2976          */
2977         out_cmd->hdr.cmd = REPLY_TX;
2978         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2979                                 INDEX_TO_SEQ(q->write_ptr)));
2980
2981         /* Copy MAC header from skb into command buffer */
2982         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2983
2984         /*
2985          * Use the first empty entry in this queue's command buffer array
2986          * to contain the Tx command and MAC header concatenated together
2987          * (payload data will be in another buffer).
2988          * Size of this varies, due to varying MAC header length.
2989          * If end is not dword aligned, we'll have 2 extra bytes at the end
2990          * of the MAC header (device reads on dword boundaries).
2991          * We'll tell device about this padding later.
2992          */
2993         len = priv->hw_setting.tx_cmd_len +
2994                 sizeof(struct iwl4965_cmd_header) + hdr_len;
2995
2996         len_org = len;
2997         len = (len + 3) & ~3;
2998
2999         if (len_org != len)
3000                 len_org = 1;
3001         else
3002                 len_org = 0;
3003
3004         /* Physical address of this Tx command's header (not MAC header!),
3005          * within command buffer array. */
3006         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3007                      offsetof(struct iwl4965_cmd, hdr);
3008
3009         /* Add buffer containing Tx command and MAC(!) header to TFD's
3010          * first entry */
3011         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3012
3013         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
3014                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3015
3016         /* Set up TFD's 2nd entry to point directly to remainder of skb,
3017          * if any (802.11 null frames have no payload). */
3018         len = skb->len - hdr_len;
3019         if (len) {
3020                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3021                                            len, PCI_DMA_TODEVICE);
3022                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3023         }
3024
3025         /* Tell 4965 about any 2-byte padding after MAC header */
3026         if (len_org)
3027                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3028
3029         /* Total # bytes to be transmitted */
3030         len = (u16)skb->len;
3031         out_cmd->cmd.tx.len = cpu_to_le16(len);
3032
3033         /* TODO need this for burst mode later on */
3034         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3035
3036         /* set is_hcca to 0; it probably will never be implemented */
3037         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3038
3039         iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
3040                        hdr, hdr_len, ctl, NULL);
3041
3042         if (!ieee80211_get_morefrag(hdr)) {
3043                 txq->need_update = 1;
3044                 if (qc) {
3045                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3046                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
3047                 }
3048         } else {
3049                 wait_write_ptr = 1;
3050                 txq->need_update = 0;
3051         }
3052
3053         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3054                            sizeof(out_cmd->cmd.tx));
3055
3056         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3057                            ieee80211_get_hdrlen(fc));
3058
3059         /* Set up entry for this TFD in Tx byte-count array */
3060         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3061
3062         /* Tell device the write index *just past* this latest filled TFD */
3063         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3064         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3065         spin_unlock_irqrestore(&priv->lock, flags);
3066
3067         if (rc)
3068                 return rc;
3069
3070         if ((iwl4965_queue_space(q) < q->high_mark)
3071             && priv->mac80211_registered) {
3072                 if (wait_write_ptr) {
3073                         spin_lock_irqsave(&priv->lock, flags);
3074                         txq->need_update = 1;
3075                         iwl4965_tx_queue_update_write_ptr(priv, txq);
3076                         spin_unlock_irqrestore(&priv->lock, flags);
3077                 }
3078
3079                 ieee80211_stop_queue(priv->hw, ctl->queue);
3080         }
3081
3082         return 0;
3083
3084 drop_unlock:
3085         spin_unlock_irqrestore(&priv->lock, flags);
3086 drop:
3087         return -1;
3088 }
3089
3090 static void iwl4965_set_rate(struct iwl4965_priv *priv)
3091 {
3092         const struct ieee80211_hw_mode *hw = NULL;
3093         struct ieee80211_rate *rate;
3094         int i;
3095
3096         hw = iwl4965_get_hw_mode(priv, priv->phymode);
3097         if (!hw) {
3098                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3099                 return;
3100         }
3101
3102         priv->active_rate = 0;
3103         priv->active_rate_basic = 0;
3104
3105         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3106                        hw->mode == MODE_IEEE80211A ?
3107                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3108
3109         for (i = 0; i < hw->num_rates; i++) {
3110                 rate = &(hw->rates[i]);
3111                 if ((rate->val < IWL_RATE_COUNT) &&
3112                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3113                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3114                                        rate->val, iwl4965_rates[rate->val].plcp,
3115                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3116                                        "*" : "");
3117                         priv->active_rate |= (1 << rate->val);
3118                         if (rate->flags & IEEE80211_RATE_BASIC)
3119                                 priv->active_rate_basic |= (1 << rate->val);
3120                 } else
3121                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3122                                        rate->val, iwl4965_rates[rate->val].plcp);
3123         }
3124
3125         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3126                        priv->active_rate, priv->active_rate_basic);
3127
3128         /*
3129          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3130          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3131          * OFDM
3132          */
3133         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3134                 priv->staging_rxon.cck_basic_rates =
3135                     ((priv->active_rate_basic &
3136                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3137         else
3138                 priv->staging_rxon.cck_basic_rates =
3139                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3140
3141         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3142                 priv->staging_rxon.ofdm_basic_rates =
3143                     ((priv->active_rate_basic &
3144                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3145                       IWL_FIRST_OFDM_RATE) & 0xFF;
3146         else
3147                 priv->staging_rxon.ofdm_basic_rates =
3148                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3149 }
3150
3151 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3152 {
3153         unsigned long flags;
3154
3155         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3156                 return;
3157
3158         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3159                           disable_radio ? "OFF" : "ON");
3160
3161         if (disable_radio) {
3162                 iwl4965_scan_cancel(priv);
3163                 /* FIXME: This is a workaround for AP */
3164                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3165                         spin_lock_irqsave(&priv->lock, flags);
3166                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3167                                     CSR_UCODE_SW_BIT_RFKILL);
3168                         spin_unlock_irqrestore(&priv->lock, flags);
3169                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3170                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3171                 }
3172                 return;
3173         }
3174
3175         spin_lock_irqsave(&priv->lock, flags);
3176         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3177
3178         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3179         spin_unlock_irqrestore(&priv->lock, flags);
3180
3181         /* wake up ucode */
3182         msleep(10);
3183
3184         spin_lock_irqsave(&priv->lock, flags);
3185         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3186         if (!iwl4965_grab_nic_access(priv))
3187                 iwl4965_release_nic_access(priv);
3188         spin_unlock_irqrestore(&priv->lock, flags);
3189
3190         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3191                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3192                                   "disabled by HW switch\n");
3193                 return;
3194         }
3195
3196         queue_work(priv->workqueue, &priv->restart);
3197         return;
3198 }
3199
3200 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3201                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3202 {
3203         u16 fc =
3204             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3205
3206         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3207                 return;
3208
3209         if (!(fc & IEEE80211_FCTL_PROTECTED))
3210                 return;
3211
3212         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3213         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3214         case RX_RES_STATUS_SEC_TYPE_TKIP:
3215                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3216                     RX_RES_STATUS_BAD_ICV_MIC)
3217                         stats->flag |= RX_FLAG_MMIC_ERROR;
3218         case RX_RES_STATUS_SEC_TYPE_WEP:
3219         case RX_RES_STATUS_SEC_TYPE_CCMP:
3220                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3221                     RX_RES_STATUS_DECRYPT_OK) {
3222                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3223                         stats->flag |= RX_FLAG_DECRYPTED;
3224                 }
3225                 break;
3226
3227         default:
3228                 break;
3229         }
3230 }
3231
3232 void iwl4965_handle_data_packet_monitor(struct iwl4965_priv *priv,
3233                                     struct iwl4965_rx_mem_buffer *rxb,
3234                                     void *data, short len,
3235                                     struct ieee80211_rx_status *stats,
3236                                     u16 phy_flags)
3237 {
3238         struct iwl4965_rt_rx_hdr *iwl4965_rt;
3239
3240         /* First cache any information we need before we overwrite
3241          * the information provided in the skb from the hardware */
3242         s8 signal = stats->ssi;
3243         s8 noise = 0;
3244         int rate = stats->rate;
3245         u64 tsf = stats->mactime;
3246         __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3247
3248         /* We received data from the HW, so stop the watchdog */
3249         if (len > IWL_RX_BUF_SIZE - sizeof(*iwl4965_rt)) {
3250                 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3251                 return;
3252         }
3253
3254         /* copy the frame data to write after where the radiotap header goes */
3255         iwl4965_rt = (void *)rxb->skb->data;
3256         memmove(iwl4965_rt->payload, data, len);
3257
3258         iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3259         iwl4965_rt->rt_hdr.it_pad = 0; /* always good to zero */
3260
3261         /* total header + data */
3262         iwl4965_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl4965_rt));
3263
3264         /* Set the size of the skb to the size of the frame */
3265         skb_put(rxb->skb, sizeof(*iwl4965_rt) + len);
3266
3267         /* Big bitfield of all the fields we provide in radiotap */
3268         iwl4965_rt->rt_hdr.it_present =
3269             cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3270                         (1 << IEEE80211_RADIOTAP_FLAGS) |
3271                         (1 << IEEE80211_RADIOTAP_RATE) |
3272                         (1 << IEEE80211_RADIOTAP_CHANNEL) |
3273                         (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3274                         (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3275                         (1 << IEEE80211_RADIOTAP_ANTENNA));
3276
3277         /* Zero the flags, we'll add to them as we go */
3278         iwl4965_rt->rt_flags = 0;
3279
3280         iwl4965_rt->rt_tsf = cpu_to_le64(tsf);
3281
3282         /* Convert to dBm */
3283         iwl4965_rt->rt_dbmsignal = signal;
3284         iwl4965_rt->rt_dbmnoise = noise;
3285
3286         /* Convert the channel frequency and set the flags */
3287         iwl4965_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3288         if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3289                 iwl4965_rt->rt_chbitmask =
3290                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3291         else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3292                 iwl4965_rt->rt_chbitmask =
3293                     cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3294         else    /* 802.11g */
3295                 iwl4965_rt->rt_chbitmask =
3296                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3297
3298         rate = iwl4965_rate_index_from_plcp(rate);
3299         if (rate == -1)
3300                 iwl4965_rt->rt_rate = 0;
3301         else
3302                 iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee;
3303
3304         /* antenna number */
3305         iwl4965_rt->rt_antenna =
3306                 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3307
3308         /* set the preamble flag if we have it */
3309         if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3310                 iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3311
3312         IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3313
3314         stats->flag |= RX_FLAG_RADIOTAP;
3315         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3316         rxb->skb = NULL;
3317 }
3318
3319
3320 #define IWL_PACKET_RETRY_TIME HZ
3321
3322 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3323 {
3324         u16 sc = le16_to_cpu(header->seq_ctrl);
3325         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3326         u16 frag = sc & IEEE80211_SCTL_FRAG;
3327         u16 *last_seq, *last_frag;
3328         unsigned long *last_time;
3329
3330         switch (priv->iw_mode) {
3331         case IEEE80211_IF_TYPE_IBSS:{
3332                 struct list_head *p;
3333                 struct iwl4965_ibss_seq *entry = NULL;
3334                 u8 *mac = header->addr2;
3335                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3336
3337                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3338                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
3339                         if (!compare_ether_addr(entry->mac, mac))
3340                                 break;
3341                 }
3342                 if (p == &priv->ibss_mac_hash[index]) {
3343                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3344                         if (!entry) {
3345                                 IWL_ERROR("Cannot malloc new mac entry\n");
3346                                 return 0;
3347                         }
3348                         memcpy(entry->mac, mac, ETH_ALEN);
3349                         entry->seq_num = seq;
3350                         entry->frag_num = frag;
3351                         entry->packet_time = jiffies;
3352                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3353                         return 0;
3354                 }
3355                 last_seq = &entry->seq_num;
3356                 last_frag = &entry->frag_num;
3357                 last_time = &entry->packet_time;
3358                 break;
3359         }
3360         case IEEE80211_IF_TYPE_STA:
3361                 last_seq = &priv->last_seq_num;
3362                 last_frag = &priv->last_frag_num;
3363                 last_time = &priv->last_packet_time;
3364                 break;
3365         default:
3366                 return 0;
3367         }
3368         if ((*last_seq == seq) &&
3369             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3370                 if (*last_frag == frag)
3371                         goto drop;
3372                 if (*last_frag + 1 != frag)
3373                         /* out-of-order fragment */
3374                         goto drop;
3375         } else
3376                 *last_seq = seq;
3377
3378         *last_frag = frag;
3379         *last_time = jiffies;
3380         return 0;
3381
3382  drop:
3383         return 1;
3384 }
3385
3386 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3387
3388 #include "iwl-spectrum.h"
3389
3390 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3391 #define BEACON_TIME_MASK_HIGH   0xFF000000
3392 #define TIME_UNIT               1024
3393
3394 /*
3395  * extended beacon time format
3396  * time in usec will be changed into a 32-bit value in 8:24 format
3397  * the high 1 byte is the beacon counts
3398  * the lower 3 bytes is the time in usec within one beacon interval
3399  */
3400
3401 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3402 {
3403         u32 quot;
3404         u32 rem;
3405         u32 interval = beacon_interval * 1024;
3406
3407         if (!interval || !usec)
3408                 return 0;
3409
3410         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3411         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3412
3413         return (quot << 24) + rem;
3414 }
3415
3416 /* base is usually what we get from ucode with each received frame,
3417  * the same as HW timer counter counting down
3418  */
3419
3420 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3421 {
3422         u32 base_low = base & BEACON_TIME_MASK_LOW;
3423         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3424         u32 interval = beacon_interval * TIME_UNIT;
3425         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3426             (addon & BEACON_TIME_MASK_HIGH);
3427
3428         if (base_low > addon_low)
3429                 res += base_low - addon_low;
3430         else if (base_low < addon_low) {
3431                 res += interval + base_low - addon_low;
3432                 res += (1 << 24);
3433         } else
3434                 res += (1 << 24);
3435
3436         return cpu_to_le32(res);
3437 }
3438
3439 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3440                                struct ieee80211_measurement_params *params,
3441                                u8 type)
3442 {
3443         struct iwl4965_spectrum_cmd spectrum;
3444         struct iwl4965_rx_packet *res;
3445         struct iwl4965_host_cmd cmd = {
3446                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3447                 .data = (void *)&spectrum,
3448                 .meta.flags = CMD_WANT_SKB,
3449         };
3450         u32 add_time = le64_to_cpu(params->start_time);
3451         int rc;
3452         int spectrum_resp_status;
3453         int duration = le16_to_cpu(params->duration);
3454
3455         if (iwl4965_is_associated(priv))
3456                 add_time =
3457                     iwl4965_usecs_to_beacons(
3458                         le64_to_cpu(params->start_time) - priv->last_tsf,
3459                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3460
3461         memset(&spectrum, 0, sizeof(spectrum));
3462
3463         spectrum.channel_count = cpu_to_le16(1);
3464         spectrum.flags =
3465             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3466         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3467         cmd.len = sizeof(spectrum);
3468         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3469
3470         if (iwl4965_is_associated(priv))
3471                 spectrum.start_time =
3472                     iwl4965_add_beacon_time(priv->last_beacon_time,
3473                                 add_time,
3474                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3475         else
3476                 spectrum.start_time = 0;
3477
3478         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3479         spectrum.channels[0].channel = params->channel;
3480         spectrum.channels[0].type = type;
3481         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3482                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3483                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3484
3485         rc = iwl4965_send_cmd_sync(priv, &cmd);
3486         if (rc)
3487                 return rc;
3488
3489         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3490         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3491                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3492                 rc = -EIO;
3493         }
3494
3495         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3496         switch (spectrum_resp_status) {
3497         case 0:         /* Command will be handled */
3498                 if (res->u.spectrum.id != 0xff) {
3499                         IWL_DEBUG_INFO
3500                             ("Replaced existing measurement: %d\n",
3501                              res->u.spectrum.id);
3502                         priv->measurement_status &= ~MEASUREMENT_READY;
3503                 }
3504                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3505                 rc = 0;
3506                 break;
3507
3508         case 1:         /* Command will not be handled */
3509                 rc = -EAGAIN;
3510                 break;
3511         }
3512
3513         dev_kfree_skb_any(cmd.meta.u.skb);
3514
3515         return rc;
3516 }
3517 #endif
3518
3519 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3520                                  struct iwl4965_tx_info *tx_sta)
3521 {
3522
3523         tx_sta->status.ack_signal = 0;
3524         tx_sta->status.excessive_retries = 0;
3525         tx_sta->status.queue_length = 0;
3526         tx_sta->status.queue_number = 0;
3527
3528         if (in_interrupt())
3529                 ieee80211_tx_status_irqsafe(priv->hw,
3530                                             tx_sta->skb[0], &(tx_sta->status));
3531         else
3532                 ieee80211_tx_status(priv->hw,
3533                                     tx_sta->skb[0], &(tx_sta->status));
3534
3535         tx_sta->skb[0] = NULL;
3536 }
3537
3538 /**
3539  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3540  *
3541  * When FW advances 'R' index, all entries between old and new 'R' index
3542  * need to be reclaimed. As result, some free space forms.  If there is
3543  * enough free space (> low mark), wake the stack that feeds us.
3544  */
3545 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3546 {
3547         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3548         struct iwl4965_queue *q = &txq->q;
3549         int nfreed = 0;
3550
3551         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3552                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3553                           "is out of range [0-%d] %d %d.\n", txq_id,
3554                           index, q->n_bd, q->write_ptr, q->read_ptr);
3555                 return 0;
3556         }
3557
3558         for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3559                 q->read_ptr != index;
3560                 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3561                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3562                         iwl4965_txstatus_to_ieee(priv,
3563                                         &(txq->txb[txq->q.read_ptr]));
3564                         iwl4965_hw_txq_free_tfd(priv, txq);
3565                 } else if (nfreed > 1) {
3566                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3567                                         q->write_ptr, q->read_ptr);
3568                         queue_work(priv->workqueue, &priv->restart);
3569                 }
3570                 nfreed++;
3571         }
3572
3573         if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3574                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3575                         priv->mac80211_registered)
3576                 ieee80211_wake_queue(priv->hw, txq_id);
3577
3578
3579         return nfreed;
3580 }
3581
3582 static int iwl4965_is_tx_success(u32 status)
3583 {
3584         status &= TX_STATUS_MSK;
3585         return (status == TX_STATUS_SUCCESS)
3586             || (status == TX_STATUS_DIRECT_DONE);
3587 }
3588
3589 /******************************************************************************
3590  *
3591  * Generic RX handler implementations
3592  *
3593  ******************************************************************************/
3594 #ifdef CONFIG_IWL4965_HT
3595 #ifdef CONFIG_IWL4965_HT_AGG
3596
3597 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3598                                     struct ieee80211_hdr *hdr)
3599 {
3600         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3601                 return IWL_AP_ID;
3602         else {
3603                 u8 *da = ieee80211_get_DA(hdr);
3604                 return iwl4965_hw_find_station(priv, da);
3605         }
3606 }
3607
3608 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3609         struct iwl4965_priv *priv, int txq_id, int idx)
3610 {
3611         if (priv->txq[txq_id].txb[idx].skb[0])
3612                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3613                                 txb[idx].skb[0]->data;
3614         return NULL;
3615 }
3616
3617 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3618 {
3619         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3620                                 tx_resp->frame_count);
3621         return le32_to_cpu(*scd_ssn) & MAX_SN;
3622
3623 }
3624
3625 /**
3626  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3627  */
3628 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3629                                       struct iwl4965_ht_agg *agg,
3630                                       struct iwl4965_tx_resp *tx_resp,
3631                                       u16 start_idx)
3632 {
3633         u32 status;
3634         __le32 *frame_status = &tx_resp->status;
3635         struct ieee80211_tx_status *tx_status = NULL;
3636         struct ieee80211_hdr *hdr = NULL;
3637         int i, sh;
3638         int txq_id, idx;
3639         u16 seq;
3640
3641         if (agg->wait_for_ba)
3642                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3643
3644         agg->frame_count = tx_resp->frame_count;
3645         agg->start_idx = start_idx;
3646         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3647         agg->bitmap0 = agg->bitmap1 = 0;
3648
3649         /* # frames attempted by Tx command */
3650         if (agg->frame_count == 1) {
3651                 /* Only one frame was attempted; no block-ack will arrive */
3652                 struct iwl4965_tx_queue *txq ;
3653                 status = le32_to_cpu(frame_status[0]);
3654
3655                 txq_id = agg->txq_id;
3656                 txq = &priv->txq[txq_id];
3657                 /* FIXME: code repetition */
3658                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3659                                    agg->frame_count, agg->start_idx);
3660
3661                 tx_status = &(priv->txq[txq_id].txb[txq->q.read_ptr].status);
3662                 tx_status->retry_count = tx_resp->failure_frame;
3663                 tx_status->queue_number = status & 0xff;
3664                 tx_status->queue_length = tx_resp->bt_kill_count;
3665                 tx_status->queue_length |= tx_resp->failure_rts;
3666
3667                 tx_status->flags = iwl4965_is_tx_success(status)?
3668                         IEEE80211_TX_STATUS_ACK : 0;
3669                 tx_status->control.tx_rate =
3670                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3671                 /* FIXME: code repetition end */
3672
3673                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3674                                     status & 0xff, tx_resp->failure_frame);
3675                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3676                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3677
3678                 agg->wait_for_ba = 0;
3679         } else {
3680                 /* Two or more frames were attempted; expect block-ack */
3681                 u64 bitmap = 0;
3682                 int start = agg->start_idx;
3683
3684                 /* Construct bit-map of pending frames within Tx window */
3685                 for (i = 0; i < agg->frame_count; i++) {
3686                         u16 sc;
3687                         status = le32_to_cpu(frame_status[i]);
3688                         seq  = status >> 16;
3689                         idx = SEQ_TO_INDEX(seq);
3690                         txq_id = SEQ_TO_QUEUE(seq);
3691
3692                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3693                                       AGG_TX_STATE_ABORT_MSK))
3694                                 continue;
3695
3696                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3697                                            agg->frame_count, txq_id, idx);
3698
3699                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3700
3701                         sc = le16_to_cpu(hdr->seq_ctrl);
3702                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3703                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3704                                           " idx=%d, seq_idx=%d, seq=%d\n",
3705                                           idx, SEQ_TO_SN(sc),
3706                                           hdr->seq_ctrl);
3707                                 return -1;
3708                         }
3709
3710                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3711                                            i, idx, SEQ_TO_SN(sc));
3712
3713                         sh = idx - start;
3714                         if (sh > 64) {
3715                                 sh = (start - idx) + 0xff;
3716                                 bitmap = bitmap << sh;
3717                                 sh = 0;
3718                                 start = idx;
3719                         } else if (sh < -64)
3720                                 sh  = 0xff - (start - idx);
3721                         else if (sh < 0) {
3722                                 sh = start - idx;
3723                                 start = idx;
3724                                 bitmap = bitmap << sh;
3725                                 sh = 0;
3726                         }
3727                         bitmap |= (1 << sh);
3728                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3729                                            start, (u32)(bitmap & 0xFFFFFFFF));
3730                 }
3731
3732                 agg->bitmap0 = bitmap & 0xFFFFFFFF;
3733                 agg->bitmap1 = bitmap >> 32;
3734                 agg->start_idx = start;
3735                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3736                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3737                                    agg->frame_count, agg->start_idx,
3738                                    agg->bitmap0);
3739
3740                 if (bitmap)
3741                         agg->wait_for_ba = 1;
3742         }
3743         return 0;
3744 }
3745 #endif
3746 #endif
3747
3748 /**
3749  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3750  */
3751 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3752                             struct iwl4965_rx_mem_buffer *rxb)
3753 {
3754         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3755         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3756         int txq_id = SEQ_TO_QUEUE(sequence);
3757         int index = SEQ_TO_INDEX(sequence);
3758         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3759         struct ieee80211_tx_status *tx_status;
3760         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3761         u32  status = le32_to_cpu(tx_resp->status);
3762 #ifdef CONFIG_IWL4965_HT
3763 #ifdef CONFIG_IWL4965_HT_AGG
3764         int tid, sta_id;
3765 #endif
3766 #endif
3767
3768         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3769                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3770                           "is out of range [0-%d] %d %d\n", txq_id,
3771                           index, txq->q.n_bd, txq->q.write_ptr,
3772                           txq->q.read_ptr);
3773                 return;
3774         }
3775
3776 #ifdef CONFIG_IWL4965_HT
3777 #ifdef CONFIG_IWL4965_HT_AGG
3778         if (txq->sched_retry) {
3779                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3780                 struct ieee80211_hdr *hdr =
3781                         iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3782                 struct iwl4965_ht_agg *agg = NULL;
3783                 __le16 *qc = ieee80211_get_qos_ctrl(hdr);
3784
3785                 if (qc == NULL) {
3786                         IWL_ERROR("BUG_ON qc is null!!!!\n");
3787                         return;
3788                 }
3789
3790                 tid = le16_to_cpu(*qc) & 0xf;
3791
3792                 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3793                 if (unlikely(sta_id == IWL_INVALID_STATION)) {
3794                         IWL_ERROR("Station not known for\n");
3795                         return;
3796                 }
3797
3798                 agg = &priv->stations[sta_id].tid[tid].agg;
3799
3800                 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3801
3802                 if ((tx_resp->frame_count == 1) &&
3803                     !iwl4965_is_tx_success(status)) {
3804                         /* TODO: send BAR */
3805                 }
3806
3807                 if ((txq->q.read_ptr != (scd_ssn & 0xff))) {
3808                         index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3809                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3810                                            "%d index %d\n", scd_ssn , index);
3811                         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3812                 }
3813         } else {
3814 #endif /* CONFIG_IWL4965_HT_AGG */
3815 #endif /* CONFIG_IWL4965_HT */
3816         tx_status = &(txq->txb[txq->q.read_ptr].status);
3817
3818         tx_status->retry_count = tx_resp->failure_frame;
3819         tx_status->queue_number = status;
3820         tx_status->queue_length = tx_resp->bt_kill_count;
3821         tx_status->queue_length |= tx_resp->failure_rts;
3822
3823         tx_status->flags =
3824             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3825
3826         tx_status->control.tx_rate =
3827                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3828
3829         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3830                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3831                      status, le32_to_cpu(tx_resp->rate_n_flags),
3832                      tx_resp->failure_frame);
3833
3834         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3835         if (index != -1)
3836                 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3837 #ifdef CONFIG_IWL4965_HT
3838 #ifdef CONFIG_IWL4965_HT_AGG
3839         }
3840 #endif /* CONFIG_IWL4965_HT_AGG */
3841 #endif /* CONFIG_IWL4965_HT */
3842
3843         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3844                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3845 }
3846
3847
3848 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3849                                struct iwl4965_rx_mem_buffer *rxb)
3850 {
3851         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3852         struct iwl4965_alive_resp *palive;
3853         struct delayed_work *pwork;
3854
3855         palive = &pkt->u.alive_frame;
3856
3857         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3858                        "0x%01X 0x%01X\n",
3859                        palive->is_valid, palive->ver_type,
3860                        palive->ver_subtype);
3861
3862         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3863                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3864                 memcpy(&priv->card_alive_init,
3865                        &pkt->u.alive_frame,
3866                        sizeof(struct iwl4965_init_alive_resp));
3867                 pwork = &priv->init_alive_start;
3868         } else {
3869                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3870                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3871                        sizeof(struct iwl4965_alive_resp));
3872                 pwork = &priv->alive_start;
3873         }
3874
3875         /* We delay the ALIVE response by 5ms to
3876          * give the HW RF Kill time to activate... */
3877         if (palive->is_valid == UCODE_VALID_OK)
3878                 queue_delayed_work(priv->workqueue, pwork,
3879                                    msecs_to_jiffies(5));
3880         else
3881                 IWL_WARNING("uCode did not respond OK.\n");
3882 }
3883
3884 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3885                                  struct iwl4965_rx_mem_buffer *rxb)
3886 {
3887         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3888
3889         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3890         return;
3891 }
3892
3893 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3894                                struct iwl4965_rx_mem_buffer *rxb)
3895 {
3896         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3897
3898         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3899                 "seq 0x%04X ser 0x%08X\n",
3900                 le32_to_cpu(pkt->u.err_resp.error_type),
3901                 get_cmd_string(pkt->u.err_resp.cmd_id),
3902                 pkt->u.err_resp.cmd_id,
3903                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3904                 le32_to_cpu(pkt->u.err_resp.error_info));
3905 }
3906
3907 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3908
3909 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3910 {
3911         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3912         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3913         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3914         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3915                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3916         rxon->channel = csa->channel;
3917         priv->staging_rxon.channel = csa->channel;
3918 }
3919
3920 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3921                                           struct iwl4965_rx_mem_buffer *rxb)
3922 {
3923 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3924         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3925         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3926
3927         if (!report->state) {
3928                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3929                           "Spectrum Measure Notification: Start\n");
3930                 return;
3931         }
3932
3933         memcpy(&priv->measure_report, report, sizeof(*report));
3934         priv->measurement_status |= MEASUREMENT_READY;
3935 #endif
3936 }
3937
3938 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3939                                   struct iwl4965_rx_mem_buffer *rxb)
3940 {
3941 #ifdef CONFIG_IWL4965_DEBUG
3942         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3943         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3944         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3945                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3946 #endif
3947 }
3948
3949 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3950                                              struct iwl4965_rx_mem_buffer *rxb)
3951 {
3952         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3953         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3954                         "notification for %s:\n",
3955                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3956         iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3957 }
3958
3959 static void iwl4965_bg_beacon_update(struct work_struct *work)
3960 {
3961         struct iwl4965_priv *priv =
3962                 container_of(work, struct iwl4965_priv, beacon_update);
3963         struct sk_buff *beacon;
3964
3965         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3966         beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3967
3968         if (!beacon) {
3969                 IWL_ERROR("update beacon failed\n");
3970                 return;
3971         }
3972
3973         mutex_lock(&priv->mutex);
3974         /* new beacon skb is allocated every time; dispose previous.*/
3975         if (priv->ibss_beacon)
3976                 dev_kfree_skb(priv->ibss_beacon);
3977
3978         priv->ibss_beacon = beacon;
3979         mutex_unlock(&priv->mutex);
3980
3981         iwl4965_send_beacon_cmd(priv);
3982 }
3983
3984 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3985                                 struct iwl4965_rx_mem_buffer *rxb)
3986 {
3987 #ifdef CONFIG_IWL4965_DEBUG
3988         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3989         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3990         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3991
3992         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3993                 "tsf %d %d rate %d\n",
3994                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3995                 beacon->beacon_notify_hdr.failure_frame,
3996                 le32_to_cpu(beacon->ibss_mgr_status),
3997                 le32_to_cpu(beacon->high_tsf),
3998                 le32_to_cpu(beacon->low_tsf), rate);
3999 #endif
4000
4001         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4002             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
4003                 queue_work(priv->workqueue, &priv->beacon_update);
4004 }
4005
4006 /* Service response to REPLY_SCAN_CMD (0x80) */
4007 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
4008                               struct iwl4965_rx_mem_buffer *rxb)
4009 {
4010 #ifdef CONFIG_IWL4965_DEBUG
4011         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4012         struct iwl4965_scanreq_notification *notif =
4013             (struct iwl4965_scanreq_notification *)pkt->u.raw;
4014
4015         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
4016 #endif
4017 }
4018
4019 /* Service SCAN_START_NOTIFICATION (0x82) */
4020 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
4021                                     struct iwl4965_rx_mem_buffer *rxb)
4022 {
4023         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4024         struct iwl4965_scanstart_notification *notif =
4025             (struct iwl4965_scanstart_notification *)pkt->u.raw;
4026         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
4027         IWL_DEBUG_SCAN("Scan start: "
4028                        "%d [802.11%s] "
4029                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
4030                        notif->channel,
4031                        notif->band ? "bg" : "a",
4032                        notif->tsf_high,
4033                        notif->tsf_low, notif->status, notif->beacon_timer);
4034 }
4035
4036 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
4037 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
4038                                       struct iwl4965_rx_mem_buffer *rxb)
4039 {
4040         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4041         struct iwl4965_scanresults_notification *notif =
4042             (struct iwl4965_scanresults_notification *)pkt->u.raw;
4043
4044         IWL_DEBUG_SCAN("Scan ch.res: "
4045                        "%d [802.11%s] "
4046                        "(TSF: 0x%08X:%08X) - %d "
4047                        "elapsed=%lu usec (%dms since last)\n",
4048                        notif->channel,
4049                        notif->band ? "bg" : "a",
4050                        le32_to_cpu(notif->tsf_high),
4051                        le32_to_cpu(notif->tsf_low),
4052                        le32_to_cpu(notif->statistics[0]),
4053                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
4054                        jiffies_to_msecs(elapsed_jiffies
4055                                         (priv->last_scan_jiffies, jiffies)));
4056
4057         priv->last_scan_jiffies = jiffies;
4058 }
4059
4060 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
4061 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
4062                                        struct iwl4965_rx_mem_buffer *rxb)
4063 {
4064         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4065         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
4066
4067         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
4068                        scan_notif->scanned_channels,
4069                        scan_notif->tsf_low,
4070                        scan_notif->tsf_high, scan_notif->status);
4071
4072         /* The HW is no longer scanning */
4073         clear_bit(STATUS_SCAN_HW, &priv->status);
4074
4075         /* The scan completion notification came in, so kill that timer... */
4076         cancel_delayed_work(&priv->scan_check);
4077
4078         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
4079                        (priv->scan_bands == 2) ? "2.4" : "5.2",
4080                        jiffies_to_msecs(elapsed_jiffies
4081                                         (priv->scan_pass_start, jiffies)));
4082
4083         /* Remove this scanned band from the list
4084          * of pending bands to scan */
4085         priv->scan_bands--;
4086
4087         /* If a request to abort was given, or the scan did not succeed
4088          * then we reset the scan state machine and terminate,
4089          * re-queuing another scan if one has been requested */
4090         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4091                 IWL_DEBUG_INFO("Aborted scan completed.\n");
4092                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
4093         } else {
4094                 /* If there are more bands on this scan pass reschedule */
4095                 if (priv->scan_bands > 0)
4096                         goto reschedule;
4097         }
4098
4099         priv->last_scan_jiffies = jiffies;
4100         IWL_DEBUG_INFO("Setting scan to off\n");
4101
4102         clear_bit(STATUS_SCANNING, &priv->status);
4103
4104         IWL_DEBUG_INFO("Scan took %dms\n",
4105                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4106
4107         queue_work(priv->workqueue, &priv->scan_completed);
4108
4109         return;
4110
4111 reschedule:
4112         priv->scan_pass_start = jiffies;
4113         queue_work(priv->workqueue, &priv->request_scan);
4114 }
4115
4116 /* Handle notification from uCode that card's power state is changing
4117  * due to software, hardware, or critical temperature RFKILL */
4118 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4119                                     struct iwl4965_rx_mem_buffer *rxb)
4120 {
4121         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4122         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4123         unsigned long status = priv->status;
4124
4125         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4126                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4127                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4128
4129         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4130                      RF_CARD_DISABLED)) {
4131
4132                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4133                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4134
4135                 if (!iwl4965_grab_nic_access(priv)) {
4136                         iwl4965_write_direct32(
4137                                 priv, HBUS_TARG_MBX_C,
4138                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4139
4140                         iwl4965_release_nic_access(priv);
4141                 }
4142
4143                 if (!(flags & RXON_CARD_DISABLED)) {
4144                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4145                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4146                         if (!iwl4965_grab_nic_access(priv)) {
4147                                 iwl4965_write_direct32(
4148                                         priv, HBUS_TARG_MBX_C,
4149                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4150
4151                                 iwl4965_release_nic_access(priv);
4152                         }
4153                 }
4154
4155                 if (flags & RF_CARD_DISABLED) {
4156                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4157                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4158                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4159                         if (!iwl4965_grab_nic_access(priv))
4160                                 iwl4965_release_nic_access(priv);
4161                 }
4162         }
4163
4164         if (flags & HW_CARD_DISABLED)
4165                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4166         else
4167                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4168
4169
4170         if (flags & SW_CARD_DISABLED)
4171                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4172         else
4173                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4174
4175         if (!(flags & RXON_CARD_DISABLED))
4176                 iwl4965_scan_cancel(priv);
4177
4178         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4179              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4180             (test_bit(STATUS_RF_KILL_SW, &status) !=
4181              test_bit(STATUS_RF_KILL_SW, &priv->status)))
4182                 queue_work(priv->workqueue, &priv->rf_kill);
4183         else
4184                 wake_up_interruptible(&priv->wait_command_queue);
4185 }
4186
4187 /**
4188  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4189  *
4190  * Setup the RX handlers for each of the reply types sent from the uCode
4191  * to the host.
4192  *
4193  * This function chains into the hardware specific files for them to setup
4194  * any hardware specific handlers as well.
4195  */
4196 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4197 {
4198         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4199         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4200         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4201         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4202         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4203             iwl4965_rx_spectrum_measure_notif;
4204         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4205         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4206             iwl4965_rx_pm_debug_statistics_notif;
4207         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4208
4209         /*
4210          * The same handler is used for both the REPLY to a discrete
4211          * statistics request from the host as well as for the periodic
4212          * statistics notifications (after received beacons) from the uCode.
4213          */
4214         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4215         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4216
4217         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4218         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4219         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4220             iwl4965_rx_scan_results_notif;
4221         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4222             iwl4965_rx_scan_complete_notif;
4223         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4224         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4225
4226         /* Set up hardware specific Rx handlers */
4227         iwl4965_hw_rx_handler_setup(priv);
4228 }
4229
4230 /**
4231  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4232  * @rxb: Rx buffer to reclaim
4233  *
4234  * If an Rx buffer has an async callback associated with it the callback
4235  * will be executed.  The attached skb (if present) will only be freed
4236  * if the callback returns 1
4237  */
4238 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4239                                 struct iwl4965_rx_mem_buffer *rxb)
4240 {
4241         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4242         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4243         int txq_id = SEQ_TO_QUEUE(sequence);
4244         int index = SEQ_TO_INDEX(sequence);
4245         int huge = sequence & SEQ_HUGE_FRAME;
4246         int cmd_index;
4247         struct iwl4965_cmd *cmd;
4248
4249         /* If a Tx command is being handled and it isn't in the actual
4250          * command queue then there a command routing bug has been introduced
4251          * in the queue management code. */
4252         if (txq_id != IWL_CMD_QUEUE_NUM)
4253                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4254                           txq_id, pkt->hdr.cmd);
4255         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4256
4257         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4258         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4259
4260         /* Input error checking is done when commands are added to queue. */
4261         if (cmd->meta.flags & CMD_WANT_SKB) {
4262                 cmd->meta.source->u.skb = rxb->skb;
4263                 rxb->skb = NULL;
4264         } else if (cmd->meta.u.callback &&
4265                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
4266                 rxb->skb = NULL;
4267
4268         iwl4965_tx_queue_reclaim(priv, txq_id, index);
4269
4270         if (!(cmd->meta.flags & CMD_ASYNC)) {
4271                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4272                 wake_up_interruptible(&priv->wait_command_queue);
4273         }
4274 }
4275
4276 /************************** RX-FUNCTIONS ****************************/
4277 /*
4278  * Rx theory of operation
4279  *
4280  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4281  * each of which point to Receive Buffers to be filled by 4965.  These get
4282  * used not only for Rx frames, but for any command response or notification
4283  * from the 4965.  The driver and 4965 manage the Rx buffers by means
4284  * of indexes into the circular buffer.
4285  *
4286  * Rx Queue Indexes
4287  * The host/firmware share two index registers for managing the Rx buffers.
4288  *
4289  * The READ index maps to the first position that the firmware may be writing
4290  * to -- the driver can read up to (but not including) this position and get
4291  * good data.
4292  * The READ index is managed by the firmware once the card is enabled.
4293  *
4294  * The WRITE index maps to the last position the driver has read from -- the
4295  * position preceding WRITE is the last slot the firmware can place a packet.
4296  *
4297  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4298  * WRITE = READ.
4299  *
4300  * During initialization, the host sets up the READ queue position to the first
4301  * INDEX position, and WRITE to the last (READ - 1 wrapped)
4302  *
4303  * When the firmware places a packet in a buffer, it will advance the READ index
4304  * and fire the RX interrupt.  The driver can then query the READ index and
4305  * process as many packets as possible, moving the WRITE index forward as it
4306  * resets the Rx queue buffers with new memory.
4307  *
4308  * The management in the driver is as follows:
4309  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
4310  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4311  *   to replenish the iwl->rxq->rx_free.
4312  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4313  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
4314  *   'processed' and 'read' driver indexes as well)
4315  * + A received packet is processed and handed to the kernel network stack,
4316  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
4317  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4318  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4319  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
4320  *   were enough free buffers and RX_STALLED is set it is cleared.
4321  *
4322  *
4323  * Driver sequence:
4324  *
4325  * iwl4965_rx_queue_alloc()   Allocates rx_free
4326  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
4327  *                            iwl4965_rx_queue_restock
4328  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4329  *                            queue, updates firmware pointers, and updates
4330  *                            the WRITE index.  If insufficient rx_free buffers
4331  *                            are available, schedules iwl4965_rx_replenish
4332  *
4333  * -- enable interrupts --
4334  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
4335  *                            READ INDEX, detaching the SKB from the pool.
4336  *                            Moves the packet buffer from queue to rx_used.
4337  *                            Calls iwl4965_rx_queue_restock to refill any empty
4338  *                            slots.
4339  * ...
4340  *
4341  */
4342
4343 /**
4344  * iwl4965_rx_queue_space - Return number of free slots available in queue.
4345  */
4346 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4347 {
4348         int s = q->read - q->write;
4349         if (s <= 0)
4350                 s += RX_QUEUE_SIZE;
4351         /* keep some buffer to not confuse full and empty queue */
4352         s -= 2;
4353         if (s < 0)
4354                 s = 0;
4355         return s;
4356 }
4357
4358 /**
4359  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4360  */
4361 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4362 {
4363         u32 reg = 0;
4364         int rc = 0;
4365         unsigned long flags;
4366
4367         spin_lock_irqsave(&q->lock, flags);
4368
4369         if (q->need_update == 0)
4370                 goto exit_unlock;
4371
4372         /* If power-saving is in use, make sure device is awake */
4373         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4374                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4375
4376                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4377                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4378                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4379                         goto exit_unlock;
4380                 }
4381
4382                 rc = iwl4965_grab_nic_access(priv);
4383                 if (rc)
4384                         goto exit_unlock;
4385
4386                 /* Device expects a multiple of 8 */
4387                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4388                                      q->write & ~0x7);
4389                 iwl4965_release_nic_access(priv);
4390
4391         /* Else device is assumed to be awake */
4392         } else
4393                 /* Device expects a multiple of 8 */
4394                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4395
4396
4397         q->need_update = 0;
4398
4399  exit_unlock:
4400         spin_unlock_irqrestore(&q->lock, flags);
4401         return rc;
4402 }
4403
4404 /**
4405  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4406  */
4407 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4408                                           dma_addr_t dma_addr)
4409 {
4410         return cpu_to_le32((u32)(dma_addr >> 8));
4411 }
4412
4413
4414 /**
4415  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4416  *
4417  * If there are slots in the RX queue that need to be restocked,
4418  * and we have free pre-allocated buffers, fill the ranks as much
4419  * as we can, pulling from rx_free.
4420  *
4421  * This moves the 'write' index forward to catch up with 'processed', and
4422  * also updates the memory address in the firmware to reference the new
4423  * target buffer.
4424  */
4425 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4426 {
4427         struct iwl4965_rx_queue *rxq = &priv->rxq;
4428         struct list_head *element;
4429         struct iwl4965_rx_mem_buffer *rxb;
4430         unsigned long flags;
4431         int write, rc;
4432
4433         spin_lock_irqsave(&rxq->lock, flags);
4434         write = rxq->write & ~0x7;
4435         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4436                 /* Get next free Rx buffer, remove from free list */
4437                 element = rxq->rx_free.next;
4438                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4439                 list_del(element);
4440
4441                 /* Point to Rx buffer via next RBD in circular buffer */
4442                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4443                 rxq->queue[rxq->write] = rxb;
4444                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4445                 rxq->free_count--;
4446         }
4447         spin_unlock_irqrestore(&rxq->lock, flags);
4448         /* If the pre-allocated buffer pool is dropping low, schedule to
4449          * refill it */
4450         if (rxq->free_count <= RX_LOW_WATERMARK)
4451                 queue_work(priv->workqueue, &priv->rx_replenish);
4452
4453
4454         /* If we've added more space for the firmware to place data, tell it.
4455          * Increment device's write pointer in multiples of 8. */
4456         if ((write != (rxq->write & ~0x7))
4457             || (abs(rxq->write - rxq->read) > 7)) {
4458                 spin_lock_irqsave(&rxq->lock, flags);
4459                 rxq->need_update = 1;
4460                 spin_unlock_irqrestore(&rxq->lock, flags);
4461                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4462                 if (rc)
4463                         return rc;
4464         }
4465
4466         return 0;
4467 }
4468
4469 /**
4470  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4471  *
4472  * When moving to rx_free an SKB is allocated for the slot.
4473  *
4474  * Also restock the Rx queue via iwl4965_rx_queue_restock.
4475  * This is called as a scheduled work item (except for during initialization)
4476  */
4477 void iwl4965_rx_replenish(void *data)
4478 {
4479         struct iwl4965_priv *priv = data;
4480         struct iwl4965_rx_queue *rxq = &priv->rxq;
4481         struct list_head *element;
4482         struct iwl4965_rx_mem_buffer *rxb;
4483         unsigned long flags;
4484         spin_lock_irqsave(&rxq->lock, flags);
4485         while (!list_empty(&rxq->rx_used)) {
4486                 element = rxq->rx_used.next;
4487                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4488
4489                 /* Alloc a new receive buffer */
4490                 rxb->skb =
4491                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4492                 if (!rxb->skb) {
4493                         if (net_ratelimit())
4494                                 printk(KERN_CRIT DRV_NAME
4495                                        ": Can not allocate SKB buffers\n");
4496                         /* We don't reschedule replenish work here -- we will
4497                          * call the restock method and if it still needs
4498                          * more buffers it will schedule replenish */
4499                         break;
4500                 }
4501                 priv->alloc_rxb_skb++;
4502                 list_del(element);
4503
4504                 /* Get physical address of RB/SKB */
4505                 rxb->dma_addr =
4506                     pci_map_single(priv->pci_dev, rxb->skb->data,
4507                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4508                 list_add_tail(&rxb->list, &rxq->rx_free);
4509                 rxq->free_count++;
4510         }
4511         spin_unlock_irqrestore(&rxq->lock, flags);
4512
4513         spin_lock_irqsave(&priv->lock, flags);
4514         iwl4965_rx_queue_restock(priv);
4515         spin_unlock_irqrestore(&priv->lock, flags);
4516 }
4517
4518 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4519  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4520  * This free routine walks the list of POOL entries and if SKB is set to
4521  * non NULL it is unmapped and freed
4522  */
4523 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4524 {
4525         int i;
4526         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4527                 if (rxq->pool[i].skb != NULL) {
4528                         pci_unmap_single(priv->pci_dev,
4529                                          rxq->pool[i].dma_addr,
4530                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4531                         dev_kfree_skb(rxq->pool[i].skb);
4532                 }
4533         }
4534
4535         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4536                             rxq->dma_addr);
4537         rxq->bd = NULL;
4538 }
4539
4540 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4541 {
4542         struct iwl4965_rx_queue *rxq = &priv->rxq;
4543         struct pci_dev *dev = priv->pci_dev;
4544         int i;
4545
4546         spin_lock_init(&rxq->lock);
4547         INIT_LIST_HEAD(&rxq->rx_free);
4548         INIT_LIST_HEAD(&rxq->rx_used);
4549
4550         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4551         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4552         if (!rxq->bd)
4553                 return -ENOMEM;
4554
4555         /* Fill the rx_used queue with _all_ of the Rx buffers */
4556         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4557                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4558
4559         /* Set us so that we have processed and used all buffers, but have
4560          * not restocked the Rx queue with fresh buffers */
4561         rxq->read = rxq->write = 0;
4562         rxq->free_count = 0;
4563         rxq->need_update = 0;
4564         return 0;
4565 }
4566
4567 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4568 {
4569         unsigned long flags;
4570         int i;
4571         spin_lock_irqsave(&rxq->lock, flags);
4572         INIT_LIST_HEAD(&rxq->rx_free);
4573         INIT_LIST_HEAD(&rxq->rx_used);
4574         /* Fill the rx_used queue with _all_ of the Rx buffers */
4575         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4576                 /* In the reset function, these buffers may have been allocated
4577                  * to an SKB, so we need to unmap and free potential storage */
4578                 if (rxq->pool[i].skb != NULL) {
4579                         pci_unmap_single(priv->pci_dev,
4580                                          rxq->pool[i].dma_addr,
4581                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4582                         priv->alloc_rxb_skb--;
4583                         dev_kfree_skb(rxq->pool[i].skb);
4584                         rxq->pool[i].skb = NULL;
4585                 }
4586                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4587         }
4588
4589         /* Set us so that we have processed and used all buffers, but have
4590          * not restocked the Rx queue with fresh buffers */
4591         rxq->read = rxq->write = 0;
4592         rxq->free_count = 0;
4593         spin_unlock_irqrestore(&rxq->lock, flags);
4594 }
4595
4596 /* Convert linear signal-to-noise ratio into dB */
4597 static u8 ratio2dB[100] = {
4598 /*       0   1   2   3   4   5   6   7   8   9 */
4599          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4600         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4601         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4602         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4603         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4604         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4605         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4606         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4607         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4608         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4609 };
4610
4611 /* Calculates a relative dB value from a ratio of linear
4612  *   (i.e. not dB) signal levels.
4613  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4614 int iwl4965_calc_db_from_ratio(int sig_ratio)
4615 {
4616         /* 1000:1 or higher just report as 60 dB */
4617         if (sig_ratio >= 1000)
4618                 return 60;
4619
4620         /* 100:1 or higher, divide by 10 and use table,
4621          *   add 20 dB to make up for divide by 10 */
4622         if (sig_ratio >= 100)
4623                 return (20 + (int)ratio2dB[sig_ratio/10]);
4624
4625         /* We shouldn't see this */
4626         if (sig_ratio < 1)
4627                 return 0;
4628
4629         /* Use table for ratios 1:1 - 99:1 */
4630         return (int)ratio2dB[sig_ratio];
4631 }
4632
4633 #define PERFECT_RSSI (-20) /* dBm */
4634 #define WORST_RSSI (-95)   /* dBm */
4635 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4636
4637 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4638  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4639  *   about formulas used below. */
4640 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4641 {
4642         int sig_qual;
4643         int degradation = PERFECT_RSSI - rssi_dbm;
4644
4645         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4646          * as indicator; formula is (signal dbm - noise dbm).
4647          * SNR at or above 40 is a great signal (100%).
4648          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4649          * Weakest usable signal is usually 10 - 15 dB SNR. */
4650         if (noise_dbm) {
4651                 if (rssi_dbm - noise_dbm >= 40)
4652                         return 100;
4653                 else if (rssi_dbm < noise_dbm)
4654                         return 0;
4655                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4656
4657         /* Else use just the signal level.
4658          * This formula is a least squares fit of data points collected and
4659          *   compared with a reference system that had a percentage (%) display
4660          *   for signal quality. */
4661         } else
4662                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4663                             (15 * RSSI_RANGE + 62 * degradation)) /
4664                            (RSSI_RANGE * RSSI_RANGE);
4665
4666         if (sig_qual > 100)
4667                 sig_qual = 100;
4668         else if (sig_qual < 1)
4669                 sig_qual = 0;
4670
4671         return sig_qual;
4672 }
4673
4674 /**
4675  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4676  *
4677  * Uses the priv->rx_handlers callback function array to invoke
4678  * the appropriate handlers, including command responses,
4679  * frame-received notifications, and other notifications.
4680  */
4681 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4682 {
4683         struct iwl4965_rx_mem_buffer *rxb;
4684         struct iwl4965_rx_packet *pkt;
4685         struct iwl4965_rx_queue *rxq = &priv->rxq;
4686         u32 r, i;
4687         int reclaim;
4688         unsigned long flags;
4689
4690         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4691          * buffer that the driver may process (last buffer filled by ucode). */
4692         r = iwl4965_hw_get_rx_read(priv);
4693         i = rxq->read;
4694
4695         /* Rx interrupt, but nothing sent from uCode */
4696         if (i == r)
4697                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4698
4699         while (i != r) {
4700                 rxb = rxq->queue[i];
4701
4702                 /* If an RXB doesn't have a Rx queue slot associated with it,
4703                  * then a bug has been introduced in the queue refilling
4704                  * routines -- catch it here */
4705                 BUG_ON(rxb == NULL);
4706
4707                 rxq->queue[i] = NULL;
4708
4709                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4710                                             IWL_RX_BUF_SIZE,
4711                                             PCI_DMA_FROMDEVICE);
4712                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4713
4714                 /* Reclaim a command buffer only if this packet is a response
4715                  *   to a (driver-originated) command.
4716                  * If the packet (e.g. Rx frame) originated from uCode,
4717                  *   there is no command buffer to reclaim.
4718                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4719                  *   but apparently a few don't get set; catch them here. */
4720                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4721                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4722                         (pkt->hdr.cmd != REPLY_4965_RX) &&
4723                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4724                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4725                         (pkt->hdr.cmd != REPLY_TX);
4726
4727                 /* Based on type of command response or notification,
4728                  *   handle those that need handling via function in
4729                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4730                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4731                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4732                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4733                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4734                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4735                 } else {
4736                         /* No handling needed */
4737                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4738                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4739                                 r, i, get_cmd_string(pkt->hdr.cmd),
4740                                 pkt->hdr.cmd);
4741                 }
4742
4743                 if (reclaim) {
4744                         /* Invoke any callbacks, transfer the skb to caller, and
4745                          * fire off the (possibly) blocking iwl4965_send_cmd()
4746                          * as we reclaim the driver command queue */
4747                         if (rxb && rxb->skb)
4748                                 iwl4965_tx_cmd_complete(priv, rxb);
4749                         else
4750                                 IWL_WARNING("Claim null rxb?\n");
4751                 }
4752
4753                 /* For now we just don't re-use anything.  We can tweak this
4754                  * later to try and re-use notification packets and SKBs that
4755                  * fail to Rx correctly */
4756                 if (rxb->skb != NULL) {
4757                         priv->alloc_rxb_skb--;
4758                         dev_kfree_skb_any(rxb->skb);
4759                         rxb->skb = NULL;
4760                 }
4761
4762                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4763                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4764                 spin_lock_irqsave(&rxq->lock, flags);
4765                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4766                 spin_unlock_irqrestore(&rxq->lock, flags);
4767                 i = (i + 1) & RX_QUEUE_MASK;
4768         }
4769
4770         /* Backtrack one entry */
4771         priv->rxq.read = i;
4772         iwl4965_rx_queue_restock(priv);
4773 }
4774
4775 /**
4776  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4777  */
4778 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4779                                   struct iwl4965_tx_queue *txq)
4780 {
4781         u32 reg = 0;
4782         int rc = 0;
4783         int txq_id = txq->q.id;
4784
4785         if (txq->need_update == 0)
4786                 return rc;
4787
4788         /* if we're trying to save power */
4789         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4790                 /* wake up nic if it's powered down ...
4791                  * uCode will wake up, and interrupt us again, so next
4792                  * time we'll skip this part. */
4793                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4794
4795                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4796                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4797                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4798                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4799                         return rc;
4800                 }
4801
4802                 /* restore this queue's parameters in nic hardware. */
4803                 rc = iwl4965_grab_nic_access(priv);
4804                 if (rc)
4805                         return rc;
4806                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4807                                      txq->q.write_ptr | (txq_id << 8));
4808                 iwl4965_release_nic_access(priv);
4809
4810         /* else not in power-save mode, uCode will never sleep when we're
4811          * trying to tx (during RFKILL, we're not trying to tx). */
4812         } else
4813                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4814                             txq->q.write_ptr | (txq_id << 8));
4815
4816         txq->need_update = 0;
4817
4818         return rc;
4819 }
4820
4821 #ifdef CONFIG_IWL4965_DEBUG
4822 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4823 {
4824         DECLARE_MAC_BUF(mac);
4825
4826         IWL_DEBUG_RADIO("RX CONFIG:\n");
4827         iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4828         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4829         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4830         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4831                         le32_to_cpu(rxon->filter_flags));
4832         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4833         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4834                         rxon->ofdm_basic_rates);
4835         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4836         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4837                         print_mac(mac, rxon->node_addr));
4838         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4839                         print_mac(mac, rxon->bssid_addr));
4840         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4841 }
4842 #endif
4843
4844 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4845 {
4846         IWL_DEBUG_ISR("Enabling interrupts\n");
4847         set_bit(STATUS_INT_ENABLED, &priv->status);
4848         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4849 }
4850
4851 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4852 {
4853         clear_bit(STATUS_INT_ENABLED, &priv->status);
4854
4855         /* disable interrupts from uCode/NIC to host */
4856         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4857
4858         /* acknowledge/clear/reset any interrupts still pending
4859          * from uCode or flow handler (Rx/Tx DMA) */
4860         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4861         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4862         IWL_DEBUG_ISR("Disabled interrupts\n");
4863 }
4864
4865 static const char *desc_lookup(int i)
4866 {
4867         switch (i) {
4868         case 1:
4869                 return "FAIL";
4870         case 2:
4871                 return "BAD_PARAM";
4872         case 3:
4873                 return "BAD_CHECKSUM";
4874         case 4:
4875                 return "NMI_INTERRUPT";
4876         case 5:
4877                 return "SYSASSERT";
4878         case 6:
4879                 return "FATAL_ERROR";
4880         }
4881
4882         return "UNKNOWN";
4883 }
4884
4885 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4886 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4887
4888 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4889 {
4890         u32 data2, line;
4891         u32 desc, time, count, base, data1;
4892         u32 blink1, blink2, ilink1, ilink2;
4893         int rc;
4894
4895         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4896
4897         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4898                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4899                 return;
4900         }
4901
4902         rc = iwl4965_grab_nic_access(priv);
4903         if (rc) {
4904                 IWL_WARNING("Can not read from adapter at this time.\n");
4905                 return;
4906         }
4907
4908         count = iwl4965_read_targ_mem(priv, base);
4909
4910         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4911                 IWL_ERROR("Start IWL Error Log Dump:\n");
4912                 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4913                           priv->status, priv->config, count);
4914         }
4915
4916         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4917         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4918         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4919         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4920         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4921         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4922         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4923         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4924         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4925
4926         IWL_ERROR("Desc               Time       "
4927                   "data1      data2      line\n");
4928         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4929                   desc_lookup(desc), desc, time, data1, data2, line);
4930         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4931         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4932                   ilink1, ilink2);
4933
4934         iwl4965_release_nic_access(priv);
4935 }
4936
4937 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4938
4939 /**
4940  * iwl4965_print_event_log - Dump error event log to syslog
4941  *
4942  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4943  */
4944 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4945                                 u32 num_events, u32 mode)
4946 {
4947         u32 i;
4948         u32 base;       /* SRAM byte address of event log header */
4949         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4950         u32 ptr;        /* SRAM byte address of log data */
4951         u32 ev, time, data; /* event log data */
4952
4953         if (num_events == 0)
4954                 return;
4955
4956         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4957
4958         if (mode == 0)
4959                 event_size = 2 * sizeof(u32);
4960         else
4961                 event_size = 3 * sizeof(u32);
4962
4963         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4964
4965         /* "time" is actually "data" for mode 0 (no timestamp).
4966          * place event id # at far right for easier visual parsing. */
4967         for (i = 0; i < num_events; i++) {
4968                 ev = iwl4965_read_targ_mem(priv, ptr);
4969                 ptr += sizeof(u32);
4970                 time = iwl4965_read_targ_mem(priv, ptr);
4971                 ptr += sizeof(u32);
4972                 if (mode == 0)
4973                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4974                 else {
4975                         data = iwl4965_read_targ_mem(priv, ptr);
4976                         ptr += sizeof(u32);
4977                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4978                 }
4979         }
4980 }
4981
4982 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4983 {
4984         int rc;
4985         u32 base;       /* SRAM byte address of event log header */
4986         u32 capacity;   /* event log capacity in # entries */
4987         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4988         u32 num_wraps;  /* # times uCode wrapped to top of log */
4989         u32 next_entry; /* index of next entry to be written by uCode */
4990         u32 size;       /* # entries that we'll print */
4991
4992         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4993         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4994                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4995                 return;
4996         }
4997
4998         rc = iwl4965_grab_nic_access(priv);
4999         if (rc) {
5000                 IWL_WARNING("Can not read from adapter at this time.\n");
5001                 return;
5002         }
5003
5004         /* event log header */
5005         capacity = iwl4965_read_targ_mem(priv, base);
5006         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
5007         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
5008         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
5009
5010         size = num_wraps ? capacity : next_entry;
5011
5012         /* bail out if nothing in log */
5013         if (size == 0) {
5014                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
5015                 iwl4965_release_nic_access(priv);
5016                 return;
5017         }
5018
5019         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
5020                   size, num_wraps);
5021
5022         /* if uCode has wrapped back to top of log, start at the oldest entry,
5023          * i.e the next one that uCode would fill. */
5024         if (num_wraps)
5025                 iwl4965_print_event_log(priv, next_entry,
5026                                     capacity - next_entry, mode);
5027
5028         /* (then/else) start at top of log */
5029         iwl4965_print_event_log(priv, 0, next_entry, mode);
5030
5031         iwl4965_release_nic_access(priv);
5032 }
5033
5034 /**
5035  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
5036  */
5037 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
5038 {
5039         /* Set the FW error flag -- cleared on iwl4965_down */
5040         set_bit(STATUS_FW_ERROR, &priv->status);
5041
5042         /* Cancel currently queued command. */
5043         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
5044
5045 #ifdef CONFIG_IWL4965_DEBUG
5046         if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
5047                 iwl4965_dump_nic_error_log(priv);
5048                 iwl4965_dump_nic_event_log(priv);
5049                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
5050         }
5051 #endif
5052
5053         wake_up_interruptible(&priv->wait_command_queue);
5054
5055         /* Keep the restart process from trying to send host
5056          * commands by clearing the INIT status bit */
5057         clear_bit(STATUS_READY, &priv->status);
5058
5059         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5060                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
5061                           "Restarting adapter due to uCode error.\n");
5062
5063                 if (iwl4965_is_associated(priv)) {
5064                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
5065                                sizeof(priv->recovery_rxon));
5066                         priv->error_recovering = 1;
5067                 }
5068                 queue_work(priv->workqueue, &priv->restart);
5069         }
5070 }
5071
5072 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
5073 {
5074         unsigned long flags;
5075
5076         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
5077                sizeof(priv->staging_rxon));
5078         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5079         iwl4965_commit_rxon(priv);
5080
5081         iwl4965_rxon_add_station(priv, priv->bssid, 1);
5082
5083         spin_lock_irqsave(&priv->lock, flags);
5084         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
5085         priv->error_recovering = 0;
5086         spin_unlock_irqrestore(&priv->lock, flags);
5087 }
5088
5089 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
5090 {
5091         u32 inta, handled = 0;
5092         u32 inta_fh;
5093         unsigned long flags;
5094 #ifdef CONFIG_IWL4965_DEBUG
5095         u32 inta_mask;
5096 #endif
5097
5098         spin_lock_irqsave(&priv->lock, flags);
5099
5100         /* Ack/clear/reset pending uCode interrupts.
5101          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
5102          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
5103         inta = iwl4965_read32(priv, CSR_INT);
5104         iwl4965_write32(priv, CSR_INT, inta);
5105
5106         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
5107          * Any new interrupts that happen after this, either while we're
5108          * in this tasklet, or later, will show up in next ISR/tasklet. */
5109         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5110         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5111
5112 #ifdef CONFIG_IWL4965_DEBUG
5113         if (iwl4965_debug_level & IWL_DL_ISR) {
5114                 /* just for debug */
5115                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5116                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5117                               inta, inta_mask, inta_fh);
5118         }
5119 #endif
5120
5121         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5122          * atomic, make sure that inta covers all the interrupts that
5123          * we've discovered, even if FH interrupt came in just after
5124          * reading CSR_INT. */
5125         if (inta_fh & CSR_FH_INT_RX_MASK)
5126                 inta |= CSR_INT_BIT_FH_RX;
5127         if (inta_fh & CSR_FH_INT_TX_MASK)
5128                 inta |= CSR_INT_BIT_FH_TX;
5129
5130         /* Now service all interrupt bits discovered above. */
5131         if (inta & CSR_INT_BIT_HW_ERR) {
5132                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
5133
5134                 /* Tell the device to stop sending interrupts */
5135                 iwl4965_disable_interrupts(priv);
5136
5137                 iwl4965_irq_handle_error(priv);
5138
5139                 handled |= CSR_INT_BIT_HW_ERR;
5140
5141                 spin_unlock_irqrestore(&priv->lock, flags);
5142
5143                 return;
5144         }
5145
5146 #ifdef CONFIG_IWL4965_DEBUG
5147         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5148                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5149                 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5150                         IWL_DEBUG_ISR("Microcode started or stopped.\n");
5151
5152                 /* Alive notification via Rx interrupt will do the real work */
5153                 if (inta & CSR_INT_BIT_ALIVE)
5154                         IWL_DEBUG_ISR("Alive interrupt\n");
5155         }
5156 #endif
5157         /* Safely ignore these bits for debug checks below */
5158         inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5159
5160         /* HW RF KILL switch toggled */
5161         if (inta & CSR_INT_BIT_RF_KILL) {
5162                 int hw_rf_kill = 0;
5163                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5164                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5165                         hw_rf_kill = 1;
5166
5167                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5168                                 "RF_KILL bit toggled to %s.\n",
5169                                 hw_rf_kill ? "disable radio":"enable radio");
5170
5171                 /* Queue restart only if RF_KILL switch was set to "kill"
5172                  *   when we loaded driver, and is now set to "enable".
5173                  * After we're Alive, RF_KILL gets handled by
5174                  *   iwl_rx_card_state_notif() */
5175                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5176                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
5177                         queue_work(priv->workqueue, &priv->restart);
5178                 }
5179
5180                 handled |= CSR_INT_BIT_RF_KILL;
5181         }
5182
5183         /* Chip got too hot and stopped itself */
5184         if (inta & CSR_INT_BIT_CT_KILL) {
5185                 IWL_ERROR("Microcode CT kill error detected.\n");
5186                 handled |= CSR_INT_BIT_CT_KILL;
5187         }
5188
5189         /* Error detected by uCode */
5190         if (inta & CSR_INT_BIT_SW_ERR) {
5191                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
5192                           inta);
5193                 iwl4965_irq_handle_error(priv);
5194                 handled |= CSR_INT_BIT_SW_ERR;
5195         }
5196
5197         /* uCode wakes up after power-down sleep */
5198         if (inta & CSR_INT_BIT_WAKEUP) {
5199                 IWL_DEBUG_ISR("Wakeup interrupt\n");
5200                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5201                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5202                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5203                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5204                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5205                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5206                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5207
5208                 handled |= CSR_INT_BIT_WAKEUP;
5209         }
5210
5211         /* All uCode command responses, including Tx command responses,
5212          * Rx "responses" (frame-received notification), and other
5213          * notifications from uCode come through here*/
5214         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5215                 iwl4965_rx_handle(priv);
5216                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5217         }
5218
5219         if (inta & CSR_INT_BIT_FH_TX) {
5220                 IWL_DEBUG_ISR("Tx interrupt\n");
5221                 handled |= CSR_INT_BIT_FH_TX;
5222         }
5223
5224         if (inta & ~handled)
5225                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5226
5227         if (inta & ~CSR_INI_SET_MASK) {
5228                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5229                          inta & ~CSR_INI_SET_MASK);
5230                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
5231         }
5232
5233         /* Re-enable all interrupts */
5234         iwl4965_enable_interrupts(priv);
5235
5236 #ifdef CONFIG_IWL4965_DEBUG
5237         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5238                 inta = iwl4965_read32(priv, CSR_INT);
5239                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5240                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5241                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5242                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5243         }
5244 #endif
5245         spin_unlock_irqrestore(&priv->lock, flags);
5246 }
5247
5248 static irqreturn_t iwl4965_isr(int irq, void *data)
5249 {
5250         struct iwl4965_priv *priv = data;
5251         u32 inta, inta_mask;
5252         u32 inta_fh;
5253         if (!priv)
5254                 return IRQ_NONE;
5255
5256         spin_lock(&priv->lock);
5257
5258         /* Disable (but don't clear!) interrupts here to avoid
5259          *    back-to-back ISRs and sporadic interrupts from our NIC.
5260          * If we have something to service, the tasklet will re-enable ints.
5261          * If we *don't* have something, we'll re-enable before leaving here. */
5262         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
5263         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5264
5265         /* Discover which interrupts are active/pending */
5266         inta = iwl4965_read32(priv, CSR_INT);
5267         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5268
5269         /* Ignore interrupt if there's nothing in NIC to service.
5270          * This may be due to IRQ shared with another device,
5271          * or due to sporadic interrupts thrown from our NIC. */
5272         if (!inta && !inta_fh) {
5273                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5274                 goto none;
5275         }
5276
5277         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5278                 /* Hardware disappeared. It might have already raised
5279                  * an interrupt */
5280                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5281                 goto unplugged;
5282         }
5283
5284         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5285                       inta, inta_mask, inta_fh);
5286
5287         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5288         tasklet_schedule(&priv->irq_tasklet);
5289
5290  unplugged:
5291         spin_unlock(&priv->lock);
5292         return IRQ_HANDLED;
5293
5294  none:
5295         /* re-enable interrupts here since we don't have anything to service. */
5296         iwl4965_enable_interrupts(priv);
5297         spin_unlock(&priv->lock);
5298         return IRQ_NONE;
5299 }
5300
5301 /************************** EEPROM BANDS ****************************
5302  *
5303  * The iwl4965_eeprom_band definitions below provide the mapping from the
5304  * EEPROM contents to the specific channel number supported for each
5305  * band.
5306  *
5307  * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5308  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5309  * The specific geography and calibration information for that channel
5310  * is contained in the eeprom map itself.
5311  *
5312  * During init, we copy the eeprom information and channel map
5313  * information into priv->channel_info_24/52 and priv->channel_map_24/52
5314  *
5315  * channel_map_24/52 provides the index in the channel_info array for a
5316  * given channel.  We have to have two separate maps as there is channel
5317  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5318  * band_2
5319  *
5320  * A value of 0xff stored in the channel_map indicates that the channel
5321  * is not supported by the hardware at all.
5322  *
5323  * A value of 0xfe in the channel_map indicates that the channel is not
5324  * valid for Tx with the current hardware.  This means that
5325  * while the system can tune and receive on a given channel, it may not
5326  * be able to associate or transmit any frames on that
5327  * channel.  There is no corresponding channel information for that
5328  * entry.
5329  *
5330  *********************************************************************/
5331
5332 /* 2.4 GHz */
5333 static const u8 iwl4965_eeprom_band_1[14] = {
5334         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5335 };
5336
5337 /* 5.2 GHz bands */
5338 static const u8 iwl4965_eeprom_band_2[] = {     /* 4915-5080MHz */
5339         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5340 };
5341
5342 static const u8 iwl4965_eeprom_band_3[] = {     /* 5170-5320MHz */
5343         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5344 };
5345
5346 static const u8 iwl4965_eeprom_band_4[] = {     /* 5500-5700MHz */
5347         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5348 };
5349
5350 static const u8 iwl4965_eeprom_band_5[] = {     /* 5725-5825MHz */
5351         145, 149, 153, 157, 161, 165
5352 };
5353
5354 static u8 iwl4965_eeprom_band_6[] = {       /* 2.4 FAT channel */
5355         1, 2, 3, 4, 5, 6, 7
5356 };
5357
5358 static u8 iwl4965_eeprom_band_7[] = {       /* 5.2 FAT channel */
5359         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5360 };
5361
5362 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5363                                     int band,
5364                                     int *eeprom_ch_count,
5365                                     const struct iwl4965_eeprom_channel
5366                                     **eeprom_ch_info,
5367                                     const u8 **eeprom_ch_index)
5368 {
5369         switch (band) {
5370         case 1:         /* 2.4GHz band */
5371                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5372                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5373                 *eeprom_ch_index = iwl4965_eeprom_band_1;
5374                 break;
5375         case 2:         /* 4.9GHz band */
5376                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5377                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5378                 *eeprom_ch_index = iwl4965_eeprom_band_2;
5379                 break;
5380         case 3:         /* 5.2GHz band */
5381                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5382                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5383                 *eeprom_ch_index = iwl4965_eeprom_band_3;
5384                 break;
5385         case 4:         /* 5.5GHz band */
5386                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5387                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5388                 *eeprom_ch_index = iwl4965_eeprom_band_4;
5389                 break;
5390         case 5:         /* 5.7GHz band */
5391                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5392                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5393                 *eeprom_ch_index = iwl4965_eeprom_band_5;
5394                 break;
5395         case 6:         /* 2.4GHz FAT channels */
5396                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5397                 *eeprom_ch_info = priv->eeprom.band_24_channels;
5398                 *eeprom_ch_index = iwl4965_eeprom_band_6;
5399                 break;
5400         case 7:         /* 5 GHz FAT channels */
5401                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5402                 *eeprom_ch_info = priv->eeprom.band_52_channels;
5403                 *eeprom_ch_index = iwl4965_eeprom_band_7;
5404                 break;
5405         default:
5406                 BUG();
5407                 return;
5408         }
5409 }
5410
5411 /**
5412  * iwl4965_get_channel_info - Find driver's private channel info
5413  *
5414  * Based on band and channel number.
5415  */
5416 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5417                                                     int phymode, u16 channel)
5418 {
5419         int i;
5420
5421         switch (phymode) {
5422         case MODE_IEEE80211A:
5423                 for (i = 14; i < priv->channel_count; i++) {
5424                         if (priv->channel_info[i].channel == channel)
5425                                 return &priv->channel_info[i];
5426                 }
5427                 break;
5428
5429         case MODE_IEEE80211B:
5430         case MODE_IEEE80211G:
5431                 if (channel >= 1 && channel <= 14)
5432                         return &priv->channel_info[channel - 1];
5433                 break;
5434
5435         }
5436
5437         return NULL;
5438 }
5439
5440 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5441                             ? # x " " : "")
5442
5443 /**
5444  * iwl4965_init_channel_map - Set up driver's info for all possible channels
5445  */
5446 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5447 {
5448         int eeprom_ch_count = 0;
5449         const u8 *eeprom_ch_index = NULL;
5450         const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5451         int band, ch;
5452         struct iwl4965_channel_info *ch_info;
5453
5454         if (priv->channel_count) {
5455                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5456                 return 0;
5457         }
5458
5459         if (priv->eeprom.version < 0x2f) {
5460                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5461                             priv->eeprom.version);
5462                 return -EINVAL;
5463         }
5464
5465         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5466
5467         priv->channel_count =
5468             ARRAY_SIZE(iwl4965_eeprom_band_1) +
5469             ARRAY_SIZE(iwl4965_eeprom_band_2) +
5470             ARRAY_SIZE(iwl4965_eeprom_band_3) +
5471             ARRAY_SIZE(iwl4965_eeprom_band_4) +
5472             ARRAY_SIZE(iwl4965_eeprom_band_5);
5473
5474         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5475
5476         priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5477                                      priv->channel_count, GFP_KERNEL);
5478         if (!priv->channel_info) {
5479                 IWL_ERROR("Could not allocate channel_info\n");
5480                 priv->channel_count = 0;
5481                 return -ENOMEM;
5482         }
5483
5484         ch_info = priv->channel_info;
5485
5486         /* Loop through the 5 EEPROM bands adding them in order to the
5487          * channel map we maintain (that contains additional information than
5488          * what just in the EEPROM) */
5489         for (band = 1; band <= 5; band++) {
5490
5491                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5492                                         &eeprom_ch_info, &eeprom_ch_index);
5493
5494                 /* Loop through each band adding each of the channels */
5495                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5496                         ch_info->channel = eeprom_ch_index[ch];
5497                         ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5498                             MODE_IEEE80211A;
5499
5500                         /* permanently store EEPROM's channel regulatory flags
5501                          *   and max power in channel info database. */
5502                         ch_info->eeprom = eeprom_ch_info[ch];
5503
5504                         /* Copy the run-time flags so they are there even on
5505                          * invalid channels */
5506                         ch_info->flags = eeprom_ch_info[ch].flags;
5507
5508                         if (!(is_channel_valid(ch_info))) {
5509                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5510                                                "No traffic\n",
5511                                                ch_info->channel,
5512                                                ch_info->flags,
5513                                                is_channel_a_band(ch_info) ?
5514                                                "5.2" : "2.4");
5515                                 ch_info++;
5516                                 continue;
5517                         }
5518
5519                         /* Initialize regulatory-based run-time data */
5520                         ch_info->max_power_avg = ch_info->curr_txpow =
5521                             eeprom_ch_info[ch].max_power_avg;
5522                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5523                         ch_info->min_power = 0;
5524
5525                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5526                                        " %ddBm): Ad-Hoc %ssupported\n",
5527                                        ch_info->channel,
5528                                        is_channel_a_band(ch_info) ?
5529                                        "5.2" : "2.4",
5530                                        CHECK_AND_PRINT(IBSS),
5531                                        CHECK_AND_PRINT(ACTIVE),
5532                                        CHECK_AND_PRINT(RADAR),
5533                                        CHECK_AND_PRINT(WIDE),
5534                                        CHECK_AND_PRINT(NARROW),
5535                                        CHECK_AND_PRINT(DFS),
5536                                        eeprom_ch_info[ch].flags,
5537                                        eeprom_ch_info[ch].max_power_avg,
5538                                        ((eeprom_ch_info[ch].
5539                                          flags & EEPROM_CHANNEL_IBSS)
5540                                         && !(eeprom_ch_info[ch].
5541                                              flags & EEPROM_CHANNEL_RADAR))
5542                                        ? "" : "not ");
5543
5544                         /* Set the user_txpower_limit to the highest power
5545                          * supported by any channel */
5546                         if (eeprom_ch_info[ch].max_power_avg >
5547                             priv->user_txpower_limit)
5548                                 priv->user_txpower_limit =
5549                                     eeprom_ch_info[ch].max_power_avg;
5550
5551                         ch_info++;
5552                 }
5553         }
5554
5555         /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5556         for (band = 6; band <= 7; band++) {
5557                 int phymode;
5558                 u8 fat_extension_chan;
5559
5560                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5561                                         &eeprom_ch_info, &eeprom_ch_index);
5562
5563                 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5564                 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5565
5566                 /* Loop through each band adding each of the channels */
5567                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5568
5569                         if ((band == 6) &&
5570                             ((eeprom_ch_index[ch] == 5) ||
5571                             (eeprom_ch_index[ch] == 6) ||
5572                             (eeprom_ch_index[ch] == 7)))
5573                                fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5574                         else
5575                                 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5576
5577                         /* Set up driver's info for lower half */
5578                         iwl4965_set_fat_chan_info(priv, phymode,
5579                                                   eeprom_ch_index[ch],
5580                                                   &(eeprom_ch_info[ch]),
5581                                                   fat_extension_chan);
5582
5583                         /* Set up driver's info for upper half */
5584                         iwl4965_set_fat_chan_info(priv, phymode,
5585                                                   (eeprom_ch_index[ch] + 4),
5586                                                   &(eeprom_ch_info[ch]),
5587                                                   HT_IE_EXT_CHANNEL_BELOW);
5588                 }
5589         }
5590
5591         return 0;
5592 }
5593
5594 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5595  * sending probe req.  This should be set long enough to hear probe responses
5596  * from more than one AP.  */
5597 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5598 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5599
5600 /* For faster active scanning, scan will move to the next channel if fewer than
5601  * PLCP_QUIET_THRESH packets are heard on this channel within
5602  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5603  * time if it's a quiet channel (nothing responded to our probe, and there's
5604  * no other traffic).
5605  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5606 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5607 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5608
5609 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5610  * Must be set longer than active dwell time.
5611  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5612 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5613 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5614 #define IWL_PASSIVE_DWELL_BASE      (100)
5615 #define IWL_CHANNEL_TUNE_TIME       5
5616
5617 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv, int phymode)
5618 {
5619         if (phymode == MODE_IEEE80211A)
5620                 return IWL_ACTIVE_DWELL_TIME_52;
5621         else
5622                 return IWL_ACTIVE_DWELL_TIME_24;
5623 }
5624
5625 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv, int phymode)
5626 {
5627         u16 active = iwl4965_get_active_dwell_time(priv, phymode);
5628         u16 passive = (phymode != MODE_IEEE80211A) ?
5629             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5630             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5631
5632         if (iwl4965_is_associated(priv)) {
5633                 /* If we're associated, we clamp the maximum passive
5634                  * dwell time to be 98% of the beacon interval (minus
5635                  * 2 * channel tune time) */
5636                 passive = priv->beacon_int;
5637                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5638                         passive = IWL_PASSIVE_DWELL_BASE;
5639                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5640         }
5641
5642         if (passive <= active)
5643                 passive = active + 1;
5644
5645         return passive;
5646 }
5647
5648 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv, int phymode,
5649                                      u8 is_active, u8 direct_mask,
5650                                      struct iwl4965_scan_channel *scan_ch)
5651 {
5652         const struct ieee80211_channel *channels = NULL;
5653         const struct ieee80211_hw_mode *hw_mode;
5654         const struct iwl4965_channel_info *ch_info;
5655         u16 passive_dwell = 0;
5656         u16 active_dwell = 0;
5657         int added, i;
5658
5659         hw_mode = iwl4965_get_hw_mode(priv, phymode);
5660         if (!hw_mode)
5661                 return 0;
5662
5663         channels = hw_mode->channels;
5664
5665         active_dwell = iwl4965_get_active_dwell_time(priv, phymode);
5666         passive_dwell = iwl4965_get_passive_dwell_time(priv, phymode);
5667
5668         for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5669                 if (channels[i].chan ==
5670                     le16_to_cpu(priv->active_rxon.channel)) {
5671                         if (iwl4965_is_associated(priv)) {
5672                                 IWL_DEBUG_SCAN
5673                                     ("Skipping current channel %d\n",
5674                                      le16_to_cpu(priv->active_rxon.channel));
5675                                 continue;
5676                         }
5677                 } else if (priv->only_active_channel)
5678                         continue;
5679
5680                 scan_ch->channel = channels[i].chan;
5681
5682                 ch_info = iwl4965_get_channel_info(priv, phymode,
5683                                          scan_ch->channel);
5684                 if (!is_channel_valid(ch_info)) {
5685                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5686                                        scan_ch->channel);
5687                         continue;
5688                 }
5689
5690                 if (!is_active || is_channel_passive(ch_info) ||
5691                     !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5692                         scan_ch->type = 0;      /* passive */
5693                 else
5694                         scan_ch->type = 1;      /* active */
5695
5696                 if (scan_ch->type & 1)
5697                         scan_ch->type |= (direct_mask << 1);
5698
5699                 if (is_channel_narrow(ch_info))
5700                         scan_ch->type |= (1 << 7);
5701
5702                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5703                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5704
5705                 /* Set txpower levels to defaults */
5706                 scan_ch->tpc.dsp_atten = 110;
5707                 /* scan_pwr_info->tpc.dsp_atten; */
5708
5709                 /*scan_pwr_info->tpc.tx_gain; */
5710                 if (phymode == MODE_IEEE80211A)
5711                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5712                 else {
5713                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5714                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5715                          * power level:
5716                          * scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5717                          */
5718                 }
5719
5720                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5721                                scan_ch->channel,
5722                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5723                                (scan_ch->type & 1) ?
5724                                active_dwell : passive_dwell);
5725
5726                 scan_ch++;
5727                 added++;
5728         }
5729
5730         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5731         return added;
5732 }
5733
5734 static void iwl4965_reset_channel_flag(struct iwl4965_priv *priv)
5735 {
5736         int i, j;
5737         for (i = 0; i < 3; i++) {
5738                 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5739                 for (j = 0; j < hw_mode->num_channels; j++)
5740                         hw_mode->channels[j].flag = hw_mode->channels[j].val;
5741         }
5742 }
5743
5744 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5745                               struct ieee80211_rate *rates)
5746 {
5747         int i;
5748
5749         for (i = 0; i < IWL_RATE_COUNT; i++) {
5750                 rates[i].rate = iwl4965_rates[i].ieee * 5;
5751                 rates[i].val = i; /* Rate scaling will work on indexes */
5752                 rates[i].val2 = i;
5753                 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5754                 /* Only OFDM have the bits-per-symbol set */
5755                 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5756                         rates[i].flags |= IEEE80211_RATE_OFDM;
5757                 else {
5758                         /*
5759                          * If CCK 1M then set rate flag to CCK else CCK_2
5760                          * which is CCK | PREAMBLE2
5761                          */
5762                         rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5763                                 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5764                 }
5765
5766                 /* Set up which ones are basic rates... */
5767                 if (IWL_BASIC_RATES_MASK & (1 << i))
5768                         rates[i].flags |= IEEE80211_RATE_BASIC;
5769         }
5770 }
5771
5772 /**
5773  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5774  */
5775 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5776 {
5777         struct iwl4965_channel_info *ch;
5778         struct ieee80211_hw_mode *modes;
5779         struct ieee80211_channel *channels;
5780         struct ieee80211_channel *geo_ch;
5781         struct ieee80211_rate *rates;
5782         int i = 0;
5783         enum {
5784                 A = 0,
5785                 B = 1,
5786                 G = 2,
5787                 A_11N = 3,
5788                 G_11N = 4,
5789         };
5790         int mode_count = 5;
5791
5792         if (priv->modes) {
5793                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5794                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5795                 return 0;
5796         }
5797
5798         modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5799                         GFP_KERNEL);
5800         if (!modes)
5801                 return -ENOMEM;
5802
5803         channels = kzalloc(sizeof(struct ieee80211_channel) *
5804                            priv->channel_count, GFP_KERNEL);
5805         if (!channels) {
5806                 kfree(modes);
5807                 return -ENOMEM;
5808         }
5809
5810         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5811                         GFP_KERNEL);
5812         if (!rates) {
5813                 kfree(modes);
5814                 kfree(channels);
5815                 return -ENOMEM;
5816         }
5817
5818         /* 0 = 802.11a
5819          * 1 = 802.11b
5820          * 2 = 802.11g
5821          */
5822
5823         /* 5.2GHz channels start after the 2.4GHz channels */
5824         modes[A].mode = MODE_IEEE80211A;
5825         modes[A].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5826         modes[A].rates = rates;
5827         modes[A].num_rates = 8; /* just OFDM */
5828         modes[A].rates = &rates[4];
5829         modes[A].num_channels = 0;
5830
5831         modes[B].mode = MODE_IEEE80211B;
5832         modes[B].channels = channels;
5833         modes[B].rates = rates;
5834         modes[B].num_rates = 4; /* just CCK */
5835         modes[B].num_channels = 0;
5836
5837         modes[G].mode = MODE_IEEE80211G;
5838         modes[G].channels = channels;
5839         modes[G].rates = rates;
5840         modes[G].num_rates = 12;        /* OFDM & CCK */
5841         modes[G].num_channels = 0;
5842
5843         modes[G_11N].mode = MODE_IEEE80211G;
5844         modes[G_11N].channels = channels;
5845         modes[G_11N].num_rates = 13;        /* OFDM & CCK */
5846         modes[G_11N].rates = rates;
5847         modes[G_11N].num_channels = 0;
5848
5849         modes[A_11N].mode = MODE_IEEE80211A;
5850         modes[A_11N].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5851         modes[A_11N].rates = &rates[4];
5852         modes[A_11N].num_rates = 9; /* just OFDM */
5853         modes[A_11N].num_channels = 0;
5854
5855         priv->ieee_channels = channels;
5856         priv->ieee_rates = rates;
5857
5858         iwl4965_init_hw_rates(priv, rates);
5859
5860         for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5861                 ch = &priv->channel_info[i];
5862
5863                 if (!is_channel_valid(ch)) {
5864                         IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5865                                     "skipping.\n",
5866                                     ch->channel, is_channel_a_band(ch) ?
5867                                     "5.2" : "2.4");
5868                         continue;
5869                 }
5870
5871                 if (is_channel_a_band(ch)) {
5872                         geo_ch = &modes[A].channels[modes[A].num_channels++];
5873                         modes[A_11N].num_channels++;
5874                 } else {
5875                         geo_ch = &modes[B].channels[modes[B].num_channels++];
5876                         modes[G].num_channels++;
5877                         modes[G_11N].num_channels++;
5878                 }
5879
5880                 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5881                 geo_ch->chan = ch->channel;
5882                 geo_ch->power_level = ch->max_power_avg;
5883                 geo_ch->antenna_max = 0xff;
5884
5885                 if (is_channel_valid(ch)) {
5886                         geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5887                         if (ch->flags & EEPROM_CHANNEL_IBSS)
5888                                 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5889
5890                         if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5891                                 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5892
5893                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5894                                 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5895
5896                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5897                                 priv->max_channel_txpower_limit =
5898                                     ch->max_power_avg;
5899                 }
5900
5901                 geo_ch->val = geo_ch->flag;
5902         }
5903
5904         if ((modes[A].num_channels == 0) && priv->is_abg) {
5905                 printk(KERN_INFO DRV_NAME
5906                        ": Incorrectly detected BG card as ABG.  Please send "
5907                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5908                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5909                 priv->is_abg = 0;
5910         }
5911
5912         printk(KERN_INFO DRV_NAME
5913                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5914                modes[G].num_channels, modes[A].num_channels);
5915
5916         /*
5917          * NOTE:  We register these in preference of order -- the
5918          * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5919          * a phymode based on rates or AP capabilities but seems to
5920          * configure it purely on if the channel being configured
5921          * is supported by a mode -- and the first match is taken
5922          */
5923
5924         if (modes[G].num_channels)
5925                 ieee80211_register_hwmode(priv->hw, &modes[G]);
5926         if (modes[B].num_channels)
5927                 ieee80211_register_hwmode(priv->hw, &modes[B]);
5928         if (modes[A].num_channels)
5929                 ieee80211_register_hwmode(priv->hw, &modes[A]);
5930
5931         priv->modes = modes;
5932         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5933
5934         return 0;
5935 }
5936
5937 /******************************************************************************
5938  *
5939  * uCode download functions
5940  *
5941  ******************************************************************************/
5942
5943 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5944 {
5945         if (priv->ucode_code.v_addr != NULL) {
5946                 pci_free_consistent(priv->pci_dev,
5947                                     priv->ucode_code.len,
5948                                     priv->ucode_code.v_addr,
5949                                     priv->ucode_code.p_addr);
5950                 priv->ucode_code.v_addr = NULL;
5951         }
5952         if (priv->ucode_data.v_addr != NULL) {
5953                 pci_free_consistent(priv->pci_dev,
5954                                     priv->ucode_data.len,
5955                                     priv->ucode_data.v_addr,
5956                                     priv->ucode_data.p_addr);
5957                 priv->ucode_data.v_addr = NULL;
5958         }
5959         if (priv->ucode_data_backup.v_addr != NULL) {
5960                 pci_free_consistent(priv->pci_dev,
5961                                     priv->ucode_data_backup.len,
5962                                     priv->ucode_data_backup.v_addr,
5963                                     priv->ucode_data_backup.p_addr);
5964                 priv->ucode_data_backup.v_addr = NULL;
5965         }
5966         if (priv->ucode_init.v_addr != NULL) {
5967                 pci_free_consistent(priv->pci_dev,
5968                                     priv->ucode_init.len,
5969                                     priv->ucode_init.v_addr,
5970                                     priv->ucode_init.p_addr);
5971                 priv->ucode_init.v_addr = NULL;
5972         }
5973         if (priv->ucode_init_data.v_addr != NULL) {
5974                 pci_free_consistent(priv->pci_dev,
5975                                     priv->ucode_init_data.len,
5976                                     priv->ucode_init_data.v_addr,
5977                                     priv->ucode_init_data.p_addr);
5978                 priv->ucode_init_data.v_addr = NULL;
5979         }
5980         if (priv->ucode_boot.v_addr != NULL) {
5981                 pci_free_consistent(priv->pci_dev,
5982                                     priv->ucode_boot.len,
5983                                     priv->ucode_boot.v_addr,
5984                                     priv->ucode_boot.p_addr);
5985                 priv->ucode_boot.v_addr = NULL;
5986         }
5987 }
5988
5989 /**
5990  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5991  *     looking at all data.
5992  */
5993 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 * image,
5994                                  u32 len)
5995 {
5996         u32 val;
5997         u32 save_len = len;
5998         int rc = 0;
5999         u32 errcnt;
6000
6001         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6002
6003         rc = iwl4965_grab_nic_access(priv);
6004         if (rc)
6005                 return rc;
6006
6007         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
6008
6009         errcnt = 0;
6010         for (; len > 0; len -= sizeof(u32), image++) {
6011                 /* read data comes through single port, auto-incr addr */
6012                 /* NOTE: Use the debugless read so we don't flood kernel log
6013                  * if IWL_DL_IO is set */
6014                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6015                 if (val != le32_to_cpu(*image)) {
6016                         IWL_ERROR("uCode INST section is invalid at "
6017                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
6018                                   save_len - len, val, le32_to_cpu(*image));
6019                         rc = -EIO;
6020                         errcnt++;
6021                         if (errcnt >= 20)
6022                                 break;
6023                 }
6024         }
6025
6026         iwl4965_release_nic_access(priv);
6027
6028         if (!errcnt)
6029                 IWL_DEBUG_INFO
6030                     ("ucode image in INSTRUCTION memory is good\n");
6031
6032         return rc;
6033 }
6034
6035
6036 /**
6037  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
6038  *   using sample data 100 bytes apart.  If these sample points are good,
6039  *   it's a pretty good bet that everything between them is good, too.
6040  */
6041 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
6042 {
6043         u32 val;
6044         int rc = 0;
6045         u32 errcnt = 0;
6046         u32 i;
6047
6048         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6049
6050         rc = iwl4965_grab_nic_access(priv);
6051         if (rc)
6052                 return rc;
6053
6054         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
6055                 /* read data comes through single port, auto-incr addr */
6056                 /* NOTE: Use the debugless read so we don't flood kernel log
6057                  * if IWL_DL_IO is set */
6058                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
6059                         i + RTC_INST_LOWER_BOUND);
6060                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6061                 if (val != le32_to_cpu(*image)) {
6062 #if 0 /* Enable this if you want to see details */
6063                         IWL_ERROR("uCode INST section is invalid at "
6064                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
6065                                   i, val, *image);
6066 #endif
6067                         rc = -EIO;
6068                         errcnt++;
6069                         if (errcnt >= 3)
6070                                 break;
6071                 }
6072         }
6073
6074         iwl4965_release_nic_access(priv);
6075
6076         return rc;
6077 }
6078
6079
6080 /**
6081  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
6082  *    and verify its contents
6083  */
6084 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
6085 {
6086         __le32 *image;
6087         u32 len;
6088         int rc = 0;
6089
6090         /* Try bootstrap */
6091         image = (__le32 *)priv->ucode_boot.v_addr;
6092         len = priv->ucode_boot.len;
6093         rc = iwl4965_verify_inst_sparse(priv, image, len);
6094         if (rc == 0) {
6095                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
6096                 return 0;
6097         }
6098
6099         /* Try initialize */
6100         image = (__le32 *)priv->ucode_init.v_addr;
6101         len = priv->ucode_init.len;
6102         rc = iwl4965_verify_inst_sparse(priv, image, len);
6103         if (rc == 0) {
6104                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
6105                 return 0;
6106         }
6107
6108         /* Try runtime/protocol */
6109         image = (__le32 *)priv->ucode_code.v_addr;
6110         len = priv->ucode_code.len;
6111         rc = iwl4965_verify_inst_sparse(priv, image, len);
6112         if (rc == 0) {
6113                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
6114                 return 0;
6115         }
6116
6117         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
6118
6119         /* Since nothing seems to match, show first several data entries in
6120          * instruction SRAM, so maybe visual inspection will give a clue.
6121          * Selection of bootstrap image (vs. other images) is arbitrary. */
6122         image = (__le32 *)priv->ucode_boot.v_addr;
6123         len = priv->ucode_boot.len;
6124         rc = iwl4965_verify_inst_full(priv, image, len);
6125
6126         return rc;
6127 }
6128
6129
6130 /* check contents of special bootstrap uCode SRAM */
6131 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
6132 {
6133         __le32 *image = priv->ucode_boot.v_addr;
6134         u32 len = priv->ucode_boot.len;
6135         u32 reg;
6136         u32 val;
6137
6138         IWL_DEBUG_INFO("Begin verify bsm\n");
6139
6140         /* verify BSM SRAM contents */
6141         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6142         for (reg = BSM_SRAM_LOWER_BOUND;
6143              reg < BSM_SRAM_LOWER_BOUND + len;
6144              reg += sizeof(u32), image ++) {
6145                 val = iwl4965_read_prph(priv, reg);
6146                 if (val != le32_to_cpu(*image)) {
6147                         IWL_ERROR("BSM uCode verification failed at "
6148                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6149                                   BSM_SRAM_LOWER_BOUND,
6150                                   reg - BSM_SRAM_LOWER_BOUND, len,
6151                                   val, le32_to_cpu(*image));
6152                         return -EIO;
6153                 }
6154         }
6155
6156         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6157
6158         return 0;
6159 }
6160
6161 /**
6162  * iwl4965_load_bsm - Load bootstrap instructions
6163  *
6164  * BSM operation:
6165  *
6166  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6167  * in special SRAM that does not power down during RFKILL.  When powering back
6168  * up after power-saving sleeps (or during initial uCode load), the BSM loads
6169  * the bootstrap program into the on-board processor, and starts it.
6170  *
6171  * The bootstrap program loads (via DMA) instructions and data for a new
6172  * program from host DRAM locations indicated by the host driver in the
6173  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
6174  * automatically.
6175  *
6176  * When initializing the NIC, the host driver points the BSM to the
6177  * "initialize" uCode image.  This uCode sets up some internal data, then
6178  * notifies host via "initialize alive" that it is complete.
6179  *
6180  * The host then replaces the BSM_DRAM_* pointer values to point to the
6181  * normal runtime uCode instructions and a backup uCode data cache buffer
6182  * (filled initially with starting data values for the on-board processor),
6183  * then triggers the "initialize" uCode to load and launch the runtime uCode,
6184  * which begins normal operation.
6185  *
6186  * When doing a power-save shutdown, runtime uCode saves data SRAM into
6187  * the backup data cache in DRAM before SRAM is powered down.
6188  *
6189  * When powering back up, the BSM loads the bootstrap program.  This reloads
6190  * the runtime uCode instructions and the backup data cache into SRAM,
6191  * and re-launches the runtime uCode from where it left off.
6192  */
6193 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6194 {
6195         __le32 *image = priv->ucode_boot.v_addr;
6196         u32 len = priv->ucode_boot.len;
6197         dma_addr_t pinst;
6198         dma_addr_t pdata;
6199         u32 inst_len;
6200         u32 data_len;
6201         int rc;
6202         int i;
6203         u32 done;
6204         u32 reg_offset;
6205
6206         IWL_DEBUG_INFO("Begin load bsm\n");
6207
6208         /* make sure bootstrap program is no larger than BSM's SRAM size */
6209         if (len > IWL_MAX_BSM_SIZE)
6210                 return -EINVAL;
6211
6212         /* Tell bootstrap uCode where to find the "Initialize" uCode
6213          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
6214          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
6215          *        after the "initialize" uCode has run, to point to
6216          *        runtime/protocol instructions and backup data cache. */
6217         pinst = priv->ucode_init.p_addr >> 4;
6218         pdata = priv->ucode_init_data.p_addr >> 4;
6219         inst_len = priv->ucode_init.len;
6220         data_len = priv->ucode_init_data.len;
6221
6222         rc = iwl4965_grab_nic_access(priv);
6223         if (rc)
6224                 return rc;
6225
6226         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6227         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6228         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6229         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6230
6231         /* Fill BSM memory with bootstrap instructions */
6232         for (reg_offset = BSM_SRAM_LOWER_BOUND;
6233              reg_offset < BSM_SRAM_LOWER_BOUND + len;
6234              reg_offset += sizeof(u32), image++)
6235                 _iwl4965_write_prph(priv, reg_offset,
6236                                           le32_to_cpu(*image));
6237
6238         rc = iwl4965_verify_bsm(priv);
6239         if (rc) {
6240                 iwl4965_release_nic_access(priv);
6241                 return rc;
6242         }
6243
6244         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6245         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6246         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6247                                  RTC_INST_LOWER_BOUND);
6248         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6249
6250         /* Load bootstrap code into instruction SRAM now,
6251          *   to prepare to load "initialize" uCode */
6252         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6253                 BSM_WR_CTRL_REG_BIT_START);
6254
6255         /* Wait for load of bootstrap uCode to finish */
6256         for (i = 0; i < 100; i++) {
6257                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6258                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6259                         break;
6260                 udelay(10);
6261         }
6262         if (i < 100)
6263                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6264         else {
6265                 IWL_ERROR("BSM write did not complete!\n");
6266                 return -EIO;
6267         }
6268
6269         /* Enable future boot loads whenever power management unit triggers it
6270          *   (e.g. when powering back up after power-save shutdown) */
6271         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6272                 BSM_WR_CTRL_REG_BIT_START_EN);
6273
6274         iwl4965_release_nic_access(priv);
6275
6276         return 0;
6277 }
6278
6279 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6280 {
6281         /* Remove all resets to allow NIC to operate */
6282         iwl4965_write32(priv, CSR_RESET, 0);
6283 }
6284
6285 static int iwl4965_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
6286 {
6287         desc->v_addr = pci_alloc_consistent(pci_dev, desc->len, &desc->p_addr);
6288         return (desc->v_addr != NULL) ? 0 : -ENOMEM;
6289 }
6290
6291 /**
6292  * iwl4965_read_ucode - Read uCode images from disk file.
6293  *
6294  * Copy into buffers for card to fetch via bus-mastering
6295  */
6296 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6297 {
6298         struct iwl4965_ucode *ucode;
6299         int ret;
6300         const struct firmware *ucode_raw;
6301         const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6302         u8 *src;
6303         size_t len;
6304         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6305
6306         /* Ask kernel firmware_class module to get the boot firmware off disk.
6307          * request_firmware() is synchronous, file is in memory on return. */
6308         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6309         if (ret < 0) {
6310                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6311                                         name, ret);
6312                 goto error;
6313         }
6314
6315         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6316                        name, ucode_raw->size);
6317
6318         /* Make sure that we got at least our header! */
6319         if (ucode_raw->size < sizeof(*ucode)) {
6320                 IWL_ERROR("File size way too small!\n");
6321                 ret = -EINVAL;
6322                 goto err_release;
6323         }
6324
6325         /* Data from ucode file:  header followed by uCode images */
6326         ucode = (void *)ucode_raw->data;
6327
6328         ver = le32_to_cpu(ucode->ver);
6329         inst_size = le32_to_cpu(ucode->inst_size);
6330         data_size = le32_to_cpu(ucode->data_size);
6331         init_size = le32_to_cpu(ucode->init_size);
6332         init_data_size = le32_to_cpu(ucode->init_data_size);
6333         boot_size = le32_to_cpu(ucode->boot_size);
6334
6335         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6336         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6337                        inst_size);
6338         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6339                        data_size);
6340         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6341                        init_size);
6342         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6343                        init_data_size);
6344         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6345                        boot_size);
6346
6347         /* Verify size of file vs. image size info in file's header */
6348         if (ucode_raw->size < sizeof(*ucode) +
6349                 inst_size + data_size + init_size +
6350                 init_data_size + boot_size) {
6351
6352                 IWL_DEBUG_INFO("uCode file size %d too small\n",
6353                                (int)ucode_raw->size);
6354                 ret = -EINVAL;
6355                 goto err_release;
6356         }
6357
6358         /* Verify that uCode images will fit in card's SRAM */
6359         if (inst_size > IWL_MAX_INST_SIZE) {
6360                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6361                                inst_size);
6362                 ret = -EINVAL;
6363                 goto err_release;
6364         }
6365
6366         if (data_size > IWL_MAX_DATA_SIZE) {
6367                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6368                                 data_size);
6369                 ret = -EINVAL;
6370                 goto err_release;
6371         }
6372         if (init_size > IWL_MAX_INST_SIZE) {
6373                 IWL_DEBUG_INFO
6374                     ("uCode init instr len %d too large to fit in\n",
6375                       init_size);
6376                 ret = -EINVAL;
6377                 goto err_release;
6378         }
6379         if (init_data_size > IWL_MAX_DATA_SIZE) {
6380                 IWL_DEBUG_INFO
6381                     ("uCode init data len %d too large to fit in\n",
6382                       init_data_size);
6383                 ret = -EINVAL;
6384                 goto err_release;
6385         }
6386         if (boot_size > IWL_MAX_BSM_SIZE) {
6387                 IWL_DEBUG_INFO
6388                     ("uCode boot instr len %d too large to fit in\n",
6389                       boot_size);
6390                 ret = -EINVAL;
6391                 goto err_release;
6392         }
6393
6394         /* Allocate ucode buffers for card's bus-master loading ... */
6395
6396         /* Runtime instructions and 2 copies of data:
6397          * 1) unmodified from disk
6398          * 2) backup cache for save/restore during power-downs */
6399         priv->ucode_code.len = inst_size;
6400         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6401
6402         priv->ucode_data.len = data_size;
6403         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6404
6405         priv->ucode_data_backup.len = data_size;
6406         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6407
6408         /* Initialization instructions and data */
6409         if (init_size && init_data_size) {
6410                 priv->ucode_init.len = init_size;
6411                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6412
6413                 priv->ucode_init_data.len = init_data_size;
6414                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6415
6416                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6417                         goto err_pci_alloc;
6418         }
6419
6420         /* Bootstrap (instructions only, no data) */
6421         if (boot_size) {
6422                 priv->ucode_boot.len = boot_size;
6423                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6424
6425                 if (!priv->ucode_boot.v_addr)
6426                         goto err_pci_alloc;
6427         }
6428
6429         /* Copy images into buffers for card's bus-master reads ... */
6430
6431         /* Runtime instructions (first block of data in file) */
6432         src = &ucode->data[0];
6433         len = priv->ucode_code.len;
6434         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6435         memcpy(priv->ucode_code.v_addr, src, len);
6436         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6437                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6438
6439         /* Runtime data (2nd block)
6440          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
6441         src = &ucode->data[inst_size];
6442         len = priv->ucode_data.len;
6443         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6444         memcpy(priv->ucode_data.v_addr, src, len);
6445         memcpy(priv->ucode_data_backup.v_addr, src, len);
6446
6447         /* Initialization instructions (3rd block) */
6448         if (init_size) {
6449                 src = &ucode->data[inst_size + data_size];
6450                 len = priv->ucode_init.len;
6451                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6452                                 len);
6453                 memcpy(priv->ucode_init.v_addr, src, len);
6454         }
6455
6456         /* Initialization data (4th block) */
6457         if (init_data_size) {
6458                 src = &ucode->data[inst_size + data_size + init_size];
6459                 len = priv->ucode_init_data.len;
6460                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6461                                len);
6462                 memcpy(priv->ucode_init_data.v_addr, src, len);
6463         }
6464
6465         /* Bootstrap instructions (5th block) */
6466         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6467         len = priv->ucode_boot.len;
6468         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6469         memcpy(priv->ucode_boot.v_addr, src, len);
6470
6471         /* We have our copies now, allow OS release its copies */
6472         release_firmware(ucode_raw);
6473         return 0;
6474
6475  err_pci_alloc:
6476         IWL_ERROR("failed to allocate pci memory\n");
6477         ret = -ENOMEM;
6478         iwl4965_dealloc_ucode_pci(priv);
6479
6480  err_release:
6481         release_firmware(ucode_raw);
6482
6483  error:
6484         return ret;
6485 }
6486
6487
6488 /**
6489  * iwl4965_set_ucode_ptrs - Set uCode address location
6490  *
6491  * Tell initialization uCode where to find runtime uCode.
6492  *
6493  * BSM registers initially contain pointers to initialization uCode.
6494  * We need to replace them to load runtime uCode inst and data,
6495  * and to save runtime data when powering down.
6496  */
6497 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6498 {
6499         dma_addr_t pinst;
6500         dma_addr_t pdata;
6501         int rc = 0;
6502         unsigned long flags;
6503
6504         /* bits 35:4 for 4965 */
6505         pinst = priv->ucode_code.p_addr >> 4;
6506         pdata = priv->ucode_data_backup.p_addr >> 4;
6507
6508         spin_lock_irqsave(&priv->lock, flags);
6509         rc = iwl4965_grab_nic_access(priv);
6510         if (rc) {
6511                 spin_unlock_irqrestore(&priv->lock, flags);
6512                 return rc;
6513         }
6514
6515         /* Tell bootstrap uCode where to find image to load */
6516         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6517         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6518         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6519                                  priv->ucode_data.len);
6520
6521         /* Inst bytecount must be last to set up, bit 31 signals uCode
6522          *   that all new ptr/size info is in place */
6523         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6524                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6525
6526         iwl4965_release_nic_access(priv);
6527
6528         spin_unlock_irqrestore(&priv->lock, flags);
6529
6530         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6531
6532         return rc;
6533 }
6534
6535 /**
6536  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6537  *
6538  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6539  *
6540  * The 4965 "initialize" ALIVE reply contains calibration data for:
6541  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
6542  *   (3945 does not contain this data).
6543  *
6544  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6545 */
6546 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6547 {
6548         /* Check alive response for "valid" sign from uCode */
6549         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6550                 /* We had an error bringing up the hardware, so take it
6551                  * all the way back down so we can try again */
6552                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6553                 goto restart;
6554         }
6555
6556         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6557          * This is a paranoid check, because we would not have gotten the
6558          * "initialize" alive if code weren't properly loaded.  */
6559         if (iwl4965_verify_ucode(priv)) {
6560                 /* Runtime instruction load was bad;
6561                  * take it all the way back down so we can try again */
6562                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6563                 goto restart;
6564         }
6565
6566         /* Calculate temperature */
6567         priv->temperature = iwl4965_get_temperature(priv);
6568
6569         /* Send pointers to protocol/runtime uCode image ... init code will
6570          * load and launch runtime uCode, which will send us another "Alive"
6571          * notification. */
6572         IWL_DEBUG_INFO("Initialization Alive received.\n");
6573         if (iwl4965_set_ucode_ptrs(priv)) {
6574                 /* Runtime instruction load won't happen;
6575                  * take it all the way back down so we can try again */
6576                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6577                 goto restart;
6578         }
6579         return;
6580
6581  restart:
6582         queue_work(priv->workqueue, &priv->restart);
6583 }
6584
6585
6586 /**
6587  * iwl4965_alive_start - called after REPLY_ALIVE notification received
6588  *                   from protocol/runtime uCode (initialization uCode's
6589  *                   Alive gets handled by iwl4965_init_alive_start()).
6590  */
6591 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6592 {
6593         int rc = 0;
6594
6595         IWL_DEBUG_INFO("Runtime Alive received.\n");
6596
6597         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6598                 /* We had an error bringing up the hardware, so take it
6599                  * all the way back down so we can try again */
6600                 IWL_DEBUG_INFO("Alive failed.\n");
6601                 goto restart;
6602         }
6603
6604         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6605          * This is a paranoid check, because we would not have gotten the
6606          * "runtime" alive if code weren't properly loaded.  */
6607         if (iwl4965_verify_ucode(priv)) {
6608                 /* Runtime instruction load was bad;
6609                  * take it all the way back down so we can try again */
6610                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6611                 goto restart;
6612         }
6613
6614         iwl4965_clear_stations_table(priv);
6615
6616         rc = iwl4965_alive_notify(priv);
6617         if (rc) {
6618                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6619                             rc);
6620                 goto restart;
6621         }
6622
6623         /* After the ALIVE response, we can send host commands to 4965 uCode */
6624         set_bit(STATUS_ALIVE, &priv->status);
6625
6626         /* Clear out the uCode error bit if it is set */
6627         clear_bit(STATUS_FW_ERROR, &priv->status);
6628
6629         rc = iwl4965_init_channel_map(priv);
6630         if (rc) {
6631                 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6632                 return;
6633         }
6634
6635         iwl4965_init_geos(priv);
6636
6637         if (iwl4965_is_rfkill(priv))
6638                 return;
6639
6640         if (!priv->mac80211_registered) {
6641                 /* Unlock so any user space entry points can call back into
6642                  * the driver without a deadlock... */
6643                 mutex_unlock(&priv->mutex);
6644                 iwl4965_rate_control_register(priv->hw);
6645                 rc = ieee80211_register_hw(priv->hw);
6646                 priv->hw->conf.beacon_int = 100;
6647                 mutex_lock(&priv->mutex);
6648
6649                 if (rc) {
6650                         iwl4965_rate_control_unregister(priv->hw);
6651                         IWL_ERROR("Failed to register network "
6652                                   "device (error %d)\n", rc);
6653                         return;
6654                 }
6655
6656                 priv->mac80211_registered = 1;
6657
6658                 iwl4965_reset_channel_flag(priv);
6659         } else
6660                 ieee80211_start_queues(priv->hw);
6661
6662         priv->active_rate = priv->rates_mask;
6663         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6664
6665         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6666
6667         if (iwl4965_is_associated(priv)) {
6668                 struct iwl4965_rxon_cmd *active_rxon =
6669                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6670
6671                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6672                        sizeof(priv->staging_rxon));
6673                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6674         } else {
6675                 /* Initialize our rx_config data */
6676                 iwl4965_connection_init_rx_config(priv);
6677                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6678         }
6679
6680         /* Configure Bluetooth device coexistence support */
6681         iwl4965_send_bt_config(priv);
6682
6683         /* Configure the adapter for unassociated operation */
6684         iwl4965_commit_rxon(priv);
6685
6686         /* At this point, the NIC is initialized and operational */
6687         priv->notif_missed_beacons = 0;
6688         set_bit(STATUS_READY, &priv->status);
6689
6690         iwl4965_rf_kill_ct_config(priv);
6691         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6692
6693         if (priv->error_recovering)
6694                 iwl4965_error_recovery(priv);
6695
6696         return;
6697
6698  restart:
6699         queue_work(priv->workqueue, &priv->restart);
6700 }
6701
6702 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6703
6704 static void __iwl4965_down(struct iwl4965_priv *priv)
6705 {
6706         unsigned long flags;
6707         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6708         struct ieee80211_conf *conf = NULL;
6709
6710         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6711
6712         conf = ieee80211_get_hw_conf(priv->hw);
6713
6714         if (!exit_pending)
6715                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6716
6717         iwl4965_clear_stations_table(priv);
6718
6719         /* Unblock any waiting calls */
6720         wake_up_interruptible_all(&priv->wait_command_queue);
6721
6722         /* Wipe out the EXIT_PENDING status bit if we are not actually
6723          * exiting the module */
6724         if (!exit_pending)
6725                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6726
6727         /* stop and reset the on-board processor */
6728         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6729
6730         /* tell the device to stop sending interrupts */
6731         iwl4965_disable_interrupts(priv);
6732
6733         if (priv->mac80211_registered)
6734                 ieee80211_stop_queues(priv->hw);
6735
6736         /* If we have not previously called iwl4965_init() then
6737          * clear all bits but the RF Kill and SUSPEND bits and return */
6738         if (!iwl4965_is_init(priv)) {
6739                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6740                                         STATUS_RF_KILL_HW |
6741                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6742                                         STATUS_RF_KILL_SW |
6743                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6744                                         STATUS_IN_SUSPEND;
6745                 goto exit;
6746         }
6747
6748         /* ...otherwise clear out all the status bits but the RF Kill and
6749          * SUSPEND bits and continue taking the NIC down. */
6750         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6751                                 STATUS_RF_KILL_HW |
6752                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6753                                 STATUS_RF_KILL_SW |
6754                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6755                                 STATUS_IN_SUSPEND |
6756                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6757                                 STATUS_FW_ERROR;
6758
6759         spin_lock_irqsave(&priv->lock, flags);
6760         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6761                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6762         spin_unlock_irqrestore(&priv->lock, flags);
6763
6764         iwl4965_hw_txq_ctx_stop(priv);
6765         iwl4965_hw_rxq_stop(priv);
6766
6767         spin_lock_irqsave(&priv->lock, flags);
6768         if (!iwl4965_grab_nic_access(priv)) {
6769                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6770                                          APMG_CLK_VAL_DMA_CLK_RQT);
6771                 iwl4965_release_nic_access(priv);
6772         }
6773         spin_unlock_irqrestore(&priv->lock, flags);
6774
6775         udelay(5);
6776
6777         iwl4965_hw_nic_stop_master(priv);
6778         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6779         iwl4965_hw_nic_reset(priv);
6780
6781  exit:
6782         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6783
6784         if (priv->ibss_beacon)
6785                 dev_kfree_skb(priv->ibss_beacon);
6786         priv->ibss_beacon = NULL;
6787
6788         /* clear out any free frames */
6789         iwl4965_clear_free_frames(priv);
6790 }
6791
6792 static void iwl4965_down(struct iwl4965_priv *priv)
6793 {
6794         mutex_lock(&priv->mutex);
6795         __iwl4965_down(priv);
6796         mutex_unlock(&priv->mutex);
6797
6798         iwl4965_cancel_deferred_work(priv);
6799 }
6800
6801 #define MAX_HW_RESTARTS 5
6802
6803 static int __iwl4965_up(struct iwl4965_priv *priv)
6804 {
6805         DECLARE_MAC_BUF(mac);
6806         int rc, i;
6807         u32 hw_rf_kill = 0;
6808
6809         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6810                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6811                 return -EIO;
6812         }
6813
6814         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6815                 IWL_WARNING("Radio disabled by SW RF kill (module "
6816                             "parameter)\n");
6817                 return 0;
6818         }
6819
6820         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6821                 IWL_ERROR("ucode not available for device bringup\n");
6822                 return -EIO;
6823         }
6824
6825         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6826
6827         rc = iwl4965_hw_nic_init(priv);
6828         if (rc) {
6829                 IWL_ERROR("Unable to int nic\n");
6830                 return rc;
6831         }
6832
6833         /* make sure rfkill handshake bits are cleared */
6834         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6835         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6836                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6837
6838         /* clear (again), then enable host interrupts */
6839         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6840         iwl4965_enable_interrupts(priv);
6841
6842         /* really make sure rfkill handshake bits are cleared */
6843         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6844         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6845
6846         /* Copy original ucode data image from disk into backup cache.
6847          * This will be used to initialize the on-board processor's
6848          * data SRAM for a clean start when the runtime program first loads. */
6849         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6850                         priv->ucode_data.len);
6851
6852         /* If platform's RF_KILL switch is set to KILL,
6853          * wait for BIT_INT_RF_KILL interrupt before loading uCode
6854          * and getting things started */
6855         if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
6856                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6857                 hw_rf_kill = 1;
6858
6859         if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6860                 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6861                 return 0;
6862         }
6863
6864         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6865
6866                 iwl4965_clear_stations_table(priv);
6867
6868                 /* load bootstrap state machine,
6869                  * load bootstrap program into processor's memory,
6870                  * prepare to load the "initialize" uCode */
6871                 rc = iwl4965_load_bsm(priv);
6872
6873                 if (rc) {
6874                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6875                         continue;
6876                 }
6877
6878                 /* start card; "initialize" will load runtime ucode */
6879                 iwl4965_nic_start(priv);
6880
6881                 /* MAC Address location in EEPROM is same for 3945/4965 */
6882                 get_eeprom_mac(priv, priv->mac_addr);
6883                 IWL_DEBUG_INFO("MAC address: %s\n",
6884                                print_mac(mac, priv->mac_addr));
6885
6886                 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6887
6888                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6889
6890                 return 0;
6891         }
6892
6893         set_bit(STATUS_EXIT_PENDING, &priv->status);
6894         __iwl4965_down(priv);
6895
6896         /* tried to restart and config the device for as long as our
6897          * patience could withstand */
6898         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6899         return -EIO;
6900 }
6901
6902
6903 /*****************************************************************************
6904  *
6905  * Workqueue callbacks
6906  *
6907  *****************************************************************************/
6908
6909 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6910 {
6911         struct iwl4965_priv *priv =
6912             container_of(data, struct iwl4965_priv, init_alive_start.work);
6913
6914         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6915                 return;
6916
6917         mutex_lock(&priv->mutex);
6918         iwl4965_init_alive_start(priv);
6919         mutex_unlock(&priv->mutex);
6920 }
6921
6922 static void iwl4965_bg_alive_start(struct work_struct *data)
6923 {
6924         struct iwl4965_priv *priv =
6925             container_of(data, struct iwl4965_priv, alive_start.work);
6926
6927         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6928                 return;
6929
6930         mutex_lock(&priv->mutex);
6931         iwl4965_alive_start(priv);
6932         mutex_unlock(&priv->mutex);
6933 }
6934
6935 static void iwl4965_bg_rf_kill(struct work_struct *work)
6936 {
6937         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6938
6939         wake_up_interruptible(&priv->wait_command_queue);
6940
6941         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6942                 return;
6943
6944         mutex_lock(&priv->mutex);
6945
6946         if (!iwl4965_is_rfkill(priv)) {
6947                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6948                           "HW and/or SW RF Kill no longer active, restarting "
6949                           "device\n");
6950                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6951                         queue_work(priv->workqueue, &priv->restart);
6952         } else {
6953
6954                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6955                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6956                                           "disabled by SW switch\n");
6957                 else
6958                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6959                                     "Kill switch must be turned off for "
6960                                     "wireless networking to work.\n");
6961         }
6962         mutex_unlock(&priv->mutex);
6963 }
6964
6965 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6966
6967 static void iwl4965_bg_scan_check(struct work_struct *data)
6968 {
6969         struct iwl4965_priv *priv =
6970             container_of(data, struct iwl4965_priv, scan_check.work);
6971
6972         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6973                 return;
6974
6975         mutex_lock(&priv->mutex);
6976         if (test_bit(STATUS_SCANNING, &priv->status) ||
6977             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6978                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6979                           "Scan completion watchdog resetting adapter (%dms)\n",
6980                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6981
6982                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6983                         iwl4965_send_scan_abort(priv);
6984         }
6985         mutex_unlock(&priv->mutex);
6986 }
6987
6988 static void iwl4965_bg_request_scan(struct work_struct *data)
6989 {
6990         struct iwl4965_priv *priv =
6991             container_of(data, struct iwl4965_priv, request_scan);
6992         struct iwl4965_host_cmd cmd = {
6993                 .id = REPLY_SCAN_CMD,
6994                 .len = sizeof(struct iwl4965_scan_cmd),
6995                 .meta.flags = CMD_SIZE_HUGE,
6996         };
6997         int rc = 0;
6998         struct iwl4965_scan_cmd *scan;
6999         struct ieee80211_conf *conf = NULL;
7000         u8 direct_mask;
7001         int phymode;
7002
7003         conf = ieee80211_get_hw_conf(priv->hw);
7004
7005         mutex_lock(&priv->mutex);
7006
7007         if (!iwl4965_is_ready(priv)) {
7008                 IWL_WARNING("request scan called when driver not ready.\n");
7009                 goto done;
7010         }
7011
7012         /* Make sure the scan wasn't cancelled before this queued work
7013          * was given the chance to run... */
7014         if (!test_bit(STATUS_SCANNING, &priv->status))
7015                 goto done;
7016
7017         /* This should never be called or scheduled if there is currently
7018          * a scan active in the hardware. */
7019         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
7020                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
7021                                "Ignoring second request.\n");
7022                 rc = -EIO;
7023                 goto done;
7024         }
7025
7026         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
7027                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
7028                 goto done;
7029         }
7030
7031         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
7032                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
7033                 goto done;
7034         }
7035
7036         if (iwl4965_is_rfkill(priv)) {
7037                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
7038                 goto done;
7039         }
7040
7041         if (!test_bit(STATUS_READY, &priv->status)) {
7042                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
7043                 goto done;
7044         }
7045
7046         if (!priv->scan_bands) {
7047                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
7048                 goto done;
7049         }
7050
7051         if (!priv->scan) {
7052                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
7053                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
7054                 if (!priv->scan) {
7055                         rc = -ENOMEM;
7056                         goto done;
7057                 }
7058         }
7059         scan = priv->scan;
7060         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
7061
7062         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
7063         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
7064
7065         if (iwl4965_is_associated(priv)) {
7066                 u16 interval = 0;
7067                 u32 extra;
7068                 u32 suspend_time = 100;
7069                 u32 scan_suspend_time = 100;
7070                 unsigned long flags;
7071
7072                 IWL_DEBUG_INFO("Scanning while associated...\n");
7073
7074                 spin_lock_irqsave(&priv->lock, flags);
7075                 interval = priv->beacon_int;
7076                 spin_unlock_irqrestore(&priv->lock, flags);
7077
7078                 scan->suspend_time = 0;
7079                 scan->max_out_time = cpu_to_le32(200 * 1024);
7080                 if (!interval)
7081                         interval = suspend_time;
7082
7083                 extra = (suspend_time / interval) << 22;
7084                 scan_suspend_time = (extra |
7085                     ((suspend_time % interval) * 1024));
7086                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
7087                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
7088                                scan_suspend_time, interval);
7089         }
7090
7091         /* We should add the ability for user to lock to PASSIVE ONLY */
7092         if (priv->one_direct_scan) {
7093                 IWL_DEBUG_SCAN
7094                     ("Kicking off one direct scan for '%s'\n",
7095                      iwl4965_escape_essid(priv->direct_ssid,
7096                                       priv->direct_ssid_len));
7097                 scan->direct_scan[0].id = WLAN_EID_SSID;
7098                 scan->direct_scan[0].len = priv->direct_ssid_len;
7099                 memcpy(scan->direct_scan[0].ssid,
7100                        priv->direct_ssid, priv->direct_ssid_len);
7101                 direct_mask = 1;
7102         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
7103                 scan->direct_scan[0].id = WLAN_EID_SSID;
7104                 scan->direct_scan[0].len = priv->essid_len;
7105                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
7106                 direct_mask = 1;
7107         } else
7108                 direct_mask = 0;
7109
7110         /* We don't build a direct scan probe request; the uCode will do
7111          * that based on the direct_mask added to each channel entry */
7112         scan->tx_cmd.len = cpu_to_le16(
7113                 iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
7114                         IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
7115         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
7116         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
7117         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
7118
7119         /* flags + rate selection */
7120
7121         scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
7122
7123         switch (priv->scan_bands) {
7124         case 2:
7125                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
7126                 scan->tx_cmd.rate_n_flags =
7127                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
7128                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7129
7130                 scan->good_CRC_th = 0;
7131                 phymode = MODE_IEEE80211G;
7132                 break;
7133
7134         case 1:
7135                 scan->tx_cmd.rate_n_flags =
7136                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7137                                 RATE_MCS_ANT_B_MSK);
7138                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7139                 phymode = MODE_IEEE80211A;
7140                 break;
7141
7142         default:
7143                 IWL_WARNING("Invalid scan band count\n");
7144                 goto done;
7145         }
7146
7147         /* select Rx chains */
7148
7149         /* Force use of chains B and C (0x6) for scan Rx.
7150          * Avoid A (0x1) because of its off-channel reception on A-band.
7151          * MIMO is not used here, but value is required to make uCode happy. */
7152         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7153                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7154                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7155                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7156
7157         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7158                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7159
7160         if (direct_mask)
7161                 IWL_DEBUG_SCAN
7162                     ("Initiating direct scan for %s.\n",
7163                      iwl4965_escape_essid(priv->essid, priv->essid_len));
7164         else
7165                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7166
7167         scan->channel_count =
7168                 iwl4965_get_channels_for_scan(
7169                         priv, phymode, 1, /* active */
7170                         direct_mask,
7171                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7172
7173         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7174             scan->channel_count * sizeof(struct iwl4965_scan_channel);
7175         cmd.data = scan;
7176         scan->len = cpu_to_le16(cmd.len);
7177
7178         set_bit(STATUS_SCAN_HW, &priv->status);
7179         rc = iwl4965_send_cmd_sync(priv, &cmd);
7180         if (rc)
7181                 goto done;
7182
7183         queue_delayed_work(priv->workqueue, &priv->scan_check,
7184                            IWL_SCAN_CHECK_WATCHDOG);
7185
7186         mutex_unlock(&priv->mutex);
7187         return;
7188
7189  done:
7190         /* inform mac80211 scan aborted */
7191         queue_work(priv->workqueue, &priv->scan_completed);
7192         mutex_unlock(&priv->mutex);
7193 }
7194
7195 static void iwl4965_bg_up(struct work_struct *data)
7196 {
7197         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7198
7199         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7200                 return;
7201
7202         mutex_lock(&priv->mutex);
7203         __iwl4965_up(priv);
7204         mutex_unlock(&priv->mutex);
7205 }
7206
7207 static void iwl4965_bg_restart(struct work_struct *data)
7208 {
7209         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7210
7211         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7212                 return;
7213
7214         iwl4965_down(priv);
7215         queue_work(priv->workqueue, &priv->up);
7216 }
7217
7218 static void iwl4965_bg_rx_replenish(struct work_struct *data)
7219 {
7220         struct iwl4965_priv *priv =
7221             container_of(data, struct iwl4965_priv, rx_replenish);
7222
7223         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7224                 return;
7225
7226         mutex_lock(&priv->mutex);
7227         iwl4965_rx_replenish(priv);
7228         mutex_unlock(&priv->mutex);
7229 }
7230
7231 static void iwl4965_bg_post_associate(struct work_struct *data)
7232 {
7233         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7234                                              post_associate.work);
7235
7236         int rc = 0;
7237         struct ieee80211_conf *conf = NULL;
7238         DECLARE_MAC_BUF(mac);
7239
7240         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7241                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7242                 return;
7243         }
7244
7245         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7246                         priv->assoc_id,
7247                         print_mac(mac, priv->active_rxon.bssid_addr));
7248
7249
7250         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7251                 return;
7252
7253         mutex_lock(&priv->mutex);
7254
7255         if (!priv->interface_id || !priv->is_open) {
7256                 mutex_unlock(&priv->mutex);
7257                 return;
7258         }
7259         iwl4965_scan_cancel_timeout(priv, 200);
7260
7261         conf = ieee80211_get_hw_conf(priv->hw);
7262
7263         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7264         iwl4965_commit_rxon(priv);
7265
7266         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7267         iwl4965_setup_rxon_timing(priv);
7268         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7269                               sizeof(priv->rxon_timing), &priv->rxon_timing);
7270         if (rc)
7271                 IWL_WARNING("REPLY_RXON_TIMING failed - "
7272                             "Attempting to continue.\n");
7273
7274         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7275
7276 #ifdef CONFIG_IWL4965_HT
7277         if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7278                 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7279         else {
7280                 priv->active_rate_ht[0] = 0;
7281                 priv->active_rate_ht[1] = 0;
7282                 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7283         }
7284 #endif /* CONFIG_IWL4965_HT*/
7285         iwl4965_set_rxon_chain(priv);
7286         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7287
7288         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7289                         priv->assoc_id, priv->beacon_int);
7290
7291         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7292                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7293         else
7294                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7295
7296         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7297                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7298                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7299                 else
7300                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7301
7302                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7303                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7304
7305         }
7306
7307         iwl4965_commit_rxon(priv);
7308
7309         switch (priv->iw_mode) {
7310         case IEEE80211_IF_TYPE_STA:
7311                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7312                 break;
7313
7314         case IEEE80211_IF_TYPE_IBSS:
7315
7316                 /* clear out the station table */
7317                 iwl4965_clear_stations_table(priv);
7318
7319                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7320                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7321                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7322                 iwl4965_send_beacon_cmd(priv);
7323
7324                 break;
7325
7326         default:
7327                 IWL_ERROR("%s Should not be called in %d mode\n",
7328                                 __FUNCTION__, priv->iw_mode);
7329                 break;
7330         }
7331
7332         iwl4965_sequence_reset(priv);
7333
7334 #ifdef CONFIG_IWL4965_SENSITIVITY
7335         /* Enable Rx differential gain and sensitivity calibrations */
7336         iwl4965_chain_noise_reset(priv);
7337         priv->start_calib = 1;
7338 #endif /* CONFIG_IWL4965_SENSITIVITY */
7339
7340         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7341                 priv->assoc_station_added = 1;
7342
7343 #ifdef CONFIG_IWL4965_QOS
7344         iwl4965_activate_qos(priv, 0);
7345 #endif /* CONFIG_IWL4965_QOS */
7346         mutex_unlock(&priv->mutex);
7347 }
7348
7349 static void iwl4965_bg_abort_scan(struct work_struct *work)
7350 {
7351         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7352
7353         if (!iwl4965_is_ready(priv))
7354                 return;
7355
7356         mutex_lock(&priv->mutex);
7357
7358         set_bit(STATUS_SCAN_ABORTING, &priv->status);
7359         iwl4965_send_scan_abort(priv);
7360
7361         mutex_unlock(&priv->mutex);
7362 }
7363
7364 static void iwl4965_bg_scan_completed(struct work_struct *work)
7365 {
7366         struct iwl4965_priv *priv =
7367             container_of(work, struct iwl4965_priv, scan_completed);
7368
7369         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7370
7371         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7372                 return;
7373
7374         ieee80211_scan_completed(priv->hw);
7375
7376         /* Since setting the TXPOWER may have been deferred while
7377          * performing the scan, fire one off */
7378         mutex_lock(&priv->mutex);
7379         iwl4965_hw_reg_send_txpower(priv);
7380         mutex_unlock(&priv->mutex);
7381 }
7382
7383 /*****************************************************************************
7384  *
7385  * mac80211 entry point functions
7386  *
7387  *****************************************************************************/
7388
7389 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7390 {
7391         struct iwl4965_priv *priv = hw->priv;
7392
7393         IWL_DEBUG_MAC80211("enter\n");
7394
7395         /* we should be verifying the device is ready to be opened */
7396         mutex_lock(&priv->mutex);
7397
7398         priv->is_open = 1;
7399
7400         if (!iwl4965_is_rfkill(priv))
7401                 ieee80211_start_queues(priv->hw);
7402
7403         mutex_unlock(&priv->mutex);
7404         IWL_DEBUG_MAC80211("leave\n");
7405         return 0;
7406 }
7407
7408 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7409 {
7410         struct iwl4965_priv *priv = hw->priv;
7411
7412         IWL_DEBUG_MAC80211("enter\n");
7413
7414
7415         mutex_lock(&priv->mutex);
7416         /* stop mac, cancel any scan request and clear
7417          * RXON_FILTER_ASSOC_MSK BIT
7418          */
7419         priv->is_open = 0;
7420         iwl4965_scan_cancel_timeout(priv, 100);
7421         cancel_delayed_work(&priv->post_associate);
7422         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7423         iwl4965_commit_rxon(priv);
7424         mutex_unlock(&priv->mutex);
7425
7426         IWL_DEBUG_MAC80211("leave\n");
7427 }
7428
7429 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7430                       struct ieee80211_tx_control *ctl)
7431 {
7432         struct iwl4965_priv *priv = hw->priv;
7433
7434         IWL_DEBUG_MAC80211("enter\n");
7435
7436         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7437                 IWL_DEBUG_MAC80211("leave - monitor\n");
7438                 return -1;
7439         }
7440
7441         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7442                      ctl->tx_rate);
7443
7444         if (iwl4965_tx_skb(priv, skb, ctl))
7445                 dev_kfree_skb_any(skb);
7446
7447         IWL_DEBUG_MAC80211("leave\n");
7448         return 0;
7449 }
7450
7451 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7452                                  struct ieee80211_if_init_conf *conf)
7453 {
7454         struct iwl4965_priv *priv = hw->priv;
7455         unsigned long flags;
7456         DECLARE_MAC_BUF(mac);
7457
7458         IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7459
7460         if (priv->interface_id) {
7461                 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7462                 return 0;
7463         }
7464
7465         spin_lock_irqsave(&priv->lock, flags);
7466         priv->interface_id = conf->if_id;
7467
7468         spin_unlock_irqrestore(&priv->lock, flags);
7469
7470         mutex_lock(&priv->mutex);
7471
7472         if (conf->mac_addr) {
7473                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7474                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7475         }
7476         iwl4965_set_mode(priv, conf->type);
7477
7478         IWL_DEBUG_MAC80211("leave\n");
7479         mutex_unlock(&priv->mutex);
7480
7481         return 0;
7482 }
7483
7484 /**
7485  * iwl4965_mac_config - mac80211 config callback
7486  *
7487  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7488  * be set inappropriately and the driver currently sets the hardware up to
7489  * use it whenever needed.
7490  */
7491 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7492 {
7493         struct iwl4965_priv *priv = hw->priv;
7494         const struct iwl4965_channel_info *ch_info;
7495         unsigned long flags;
7496
7497         mutex_lock(&priv->mutex);
7498         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7499
7500         if (!iwl4965_is_ready(priv)) {
7501                 IWL_DEBUG_MAC80211("leave - not ready\n");
7502                 mutex_unlock(&priv->mutex);
7503                 return -EIO;
7504         }
7505
7506         /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7507          * what is exposed through include/ declarations */
7508         if (unlikely(!iwl4965_param_disable_hw_scan &&
7509                      test_bit(STATUS_SCANNING, &priv->status))) {
7510                 IWL_DEBUG_MAC80211("leave - scanning\n");
7511                 mutex_unlock(&priv->mutex);
7512                 return 0;
7513         }
7514
7515         spin_lock_irqsave(&priv->lock, flags);
7516
7517         ch_info = iwl4965_get_channel_info(priv, conf->phymode, conf->channel);
7518         if (!is_channel_valid(ch_info)) {
7519                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7520                                conf->channel, conf->phymode);
7521                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7522                 spin_unlock_irqrestore(&priv->lock, flags);
7523                 mutex_unlock(&priv->mutex);
7524                 return -EINVAL;
7525         }
7526
7527 #ifdef CONFIG_IWL4965_HT
7528         /* if we are switching fron ht to 2.4 clear flags
7529          * from any ht related info since 2.4 does not
7530          * support ht */
7531         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7532 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7533             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7534 #endif
7535         )
7536                 priv->staging_rxon.flags = 0;
7537 #endif /* CONFIG_IWL4965_HT */
7538
7539         iwl4965_set_rxon_channel(priv, conf->phymode, conf->channel);
7540
7541         iwl4965_set_flags_for_phymode(priv, conf->phymode);
7542
7543         /* The list of supported rates and rate mask can be different
7544          * for each phymode; since the phymode may have changed, reset
7545          * the rate mask to what mac80211 lists */
7546         iwl4965_set_rate(priv);
7547
7548         spin_unlock_irqrestore(&priv->lock, flags);
7549
7550 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7551         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7552                 iwl4965_hw_channel_switch(priv, conf->channel);
7553                 mutex_unlock(&priv->mutex);
7554                 return 0;
7555         }
7556 #endif
7557
7558         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7559
7560         if (!conf->radio_enabled) {
7561                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7562                 mutex_unlock(&priv->mutex);
7563                 return 0;
7564         }
7565
7566         if (iwl4965_is_rfkill(priv)) {
7567                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7568                 mutex_unlock(&priv->mutex);
7569                 return -EIO;
7570         }
7571
7572         iwl4965_set_rate(priv);
7573
7574         if (memcmp(&priv->active_rxon,
7575                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7576                 iwl4965_commit_rxon(priv);
7577         else
7578                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7579
7580         IWL_DEBUG_MAC80211("leave\n");
7581
7582         mutex_unlock(&priv->mutex);
7583
7584         return 0;
7585 }
7586
7587 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7588 {
7589         int rc = 0;
7590
7591         if (priv->status & STATUS_EXIT_PENDING)
7592                 return;
7593
7594         /* The following should be done only at AP bring up */
7595         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7596
7597                 /* RXON - unassoc (to set timing command) */
7598                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7599                 iwl4965_commit_rxon(priv);
7600
7601                 /* RXON Timing */
7602                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7603                 iwl4965_setup_rxon_timing(priv);
7604                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7605                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7606                 if (rc)
7607                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7608                                         "Attempting to continue.\n");
7609
7610                 iwl4965_set_rxon_chain(priv);
7611
7612                 /* FIXME: what should be the assoc_id for AP? */
7613                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7614                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7615                         priv->staging_rxon.flags |=
7616                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7617                 else
7618                         priv->staging_rxon.flags &=
7619                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7620
7621                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7622                         if (priv->assoc_capability &
7623                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7624                                 priv->staging_rxon.flags |=
7625                                         RXON_FLG_SHORT_SLOT_MSK;
7626                         else
7627                                 priv->staging_rxon.flags &=
7628                                         ~RXON_FLG_SHORT_SLOT_MSK;
7629
7630                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7631                                 priv->staging_rxon.flags &=
7632                                         ~RXON_FLG_SHORT_SLOT_MSK;
7633                 }
7634                 /* restore RXON assoc */
7635                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7636                 iwl4965_commit_rxon(priv);
7637 #ifdef CONFIG_IWL4965_QOS
7638                 iwl4965_activate_qos(priv, 1);
7639 #endif
7640                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7641         }
7642         iwl4965_send_beacon_cmd(priv);
7643
7644         /* FIXME - we need to add code here to detect a totally new
7645          * configuration, reset the AP, unassoc, rxon timing, assoc,
7646          * clear sta table, add BCAST sta... */
7647 }
7648
7649 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7650                                     struct ieee80211_if_conf *conf)
7651 {
7652         struct iwl4965_priv *priv = hw->priv;
7653         DECLARE_MAC_BUF(mac);
7654         unsigned long flags;
7655         int rc;
7656
7657         if (conf == NULL)
7658                 return -EIO;
7659
7660         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7661             (!conf->beacon || !conf->ssid_len)) {
7662                 IWL_DEBUG_MAC80211
7663                     ("Leaving in AP mode because HostAPD is not ready.\n");
7664                 return 0;
7665         }
7666
7667         mutex_lock(&priv->mutex);
7668
7669         IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7670         if (conf->bssid)
7671                 IWL_DEBUG_MAC80211("bssid: %s\n",
7672                                    print_mac(mac, conf->bssid));
7673
7674 /*
7675  * very dubious code was here; the probe filtering flag is never set:
7676  *
7677         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7678             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7679  */
7680         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7681                 IWL_DEBUG_MAC80211("leave - scanning\n");
7682                 mutex_unlock(&priv->mutex);
7683                 return 0;
7684         }
7685
7686         if (priv->interface_id != if_id) {
7687                 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7688                 mutex_unlock(&priv->mutex);
7689                 return 0;
7690         }
7691
7692         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7693                 if (!conf->bssid) {
7694                         conf->bssid = priv->mac_addr;
7695                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7696                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7697                                            print_mac(mac, conf->bssid));
7698                 }
7699                 if (priv->ibss_beacon)
7700                         dev_kfree_skb(priv->ibss_beacon);
7701
7702                 priv->ibss_beacon = conf->beacon;
7703         }
7704
7705         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7706             !is_multicast_ether_addr(conf->bssid)) {
7707                 /* If there is currently a HW scan going on in the background
7708                  * then we need to cancel it else the RXON below will fail. */
7709                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7710                         IWL_WARNING("Aborted scan still in progress "
7711                                     "after 100ms\n");
7712                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7713                         mutex_unlock(&priv->mutex);
7714                         return -EAGAIN;
7715                 }
7716                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7717
7718                 /* TODO: Audit driver for usage of these members and see
7719                  * if mac80211 deprecates them (priv->bssid looks like it
7720                  * shouldn't be there, but I haven't scanned the IBSS code
7721                  * to verify) - jpk */
7722                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7723
7724                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7725                         iwl4965_config_ap(priv);
7726                 else {
7727                         rc = iwl4965_commit_rxon(priv);
7728                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7729                                 iwl4965_rxon_add_station(
7730                                         priv, priv->active_rxon.bssid_addr, 1);
7731                 }
7732
7733         } else {
7734                 iwl4965_scan_cancel_timeout(priv, 100);
7735                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7736                 iwl4965_commit_rxon(priv);
7737         }
7738
7739         spin_lock_irqsave(&priv->lock, flags);
7740         if (!conf->ssid_len)
7741                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7742         else
7743                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7744
7745         priv->essid_len = conf->ssid_len;
7746         spin_unlock_irqrestore(&priv->lock, flags);
7747
7748         IWL_DEBUG_MAC80211("leave\n");
7749         mutex_unlock(&priv->mutex);
7750
7751         return 0;
7752 }
7753
7754 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7755                                  unsigned int changed_flags,
7756                                  unsigned int *total_flags,
7757                                  int mc_count, struct dev_addr_list *mc_list)
7758 {
7759         /*
7760          * XXX: dummy
7761          * see also iwl4965_connection_init_rx_config
7762          */
7763         *total_flags = 0;
7764 }
7765
7766 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7767                                      struct ieee80211_if_init_conf *conf)
7768 {
7769         struct iwl4965_priv *priv = hw->priv;
7770
7771         IWL_DEBUG_MAC80211("enter\n");
7772
7773         mutex_lock(&priv->mutex);
7774
7775         iwl4965_scan_cancel_timeout(priv, 100);
7776         cancel_delayed_work(&priv->post_associate);
7777         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7778         iwl4965_commit_rxon(priv);
7779
7780         if (priv->interface_id == conf->if_id) {
7781                 priv->interface_id = 0;
7782                 memset(priv->bssid, 0, ETH_ALEN);
7783                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7784                 priv->essid_len = 0;
7785         }
7786         mutex_unlock(&priv->mutex);
7787
7788         IWL_DEBUG_MAC80211("leave\n");
7789
7790 }
7791 static void iwl4965_mac_erp_ie_changed(struct ieee80211_hw *hw,
7792                 u8 changes, int cts_protection, int preamble)
7793 {
7794         struct iwl4965_priv *priv = hw->priv;
7795
7796         if (changes & IEEE80211_ERP_CHANGE_PREAMBLE) {
7797                 if (preamble == WLAN_ERP_PREAMBLE_SHORT)
7798                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7799                 else
7800                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7801         }
7802
7803         if (changes & IEEE80211_ERP_CHANGE_PROTECTION) {
7804                 if (cts_protection && (priv->phymode != MODE_IEEE80211A))
7805                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7806                 else
7807                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7808         }
7809
7810         if (iwl4965_is_associated(priv))
7811                 iwl4965_send_rxon_assoc(priv);
7812 }
7813
7814 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7815 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7816 {
7817         int rc = 0;
7818         unsigned long flags;
7819         struct iwl4965_priv *priv = hw->priv;
7820
7821         IWL_DEBUG_MAC80211("enter\n");
7822
7823         mutex_lock(&priv->mutex);
7824         spin_lock_irqsave(&priv->lock, flags);
7825
7826         if (!iwl4965_is_ready_rf(priv)) {
7827                 rc = -EIO;
7828                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7829                 goto out_unlock;
7830         }
7831
7832         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7833                 rc = -EIO;
7834                 IWL_ERROR("ERROR: APs don't scan\n");
7835                 goto out_unlock;
7836         }
7837
7838         /* if we just finished scan ask for delay */
7839         if (priv->last_scan_jiffies &&
7840             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7841                        jiffies)) {
7842                 rc = -EAGAIN;
7843                 goto out_unlock;
7844         }
7845         if (len) {
7846                 IWL_DEBUG_SCAN("direct scan for  "
7847                                "%s [%d]\n ",
7848                                iwl4965_escape_essid(ssid, len), (int)len);
7849
7850                 priv->one_direct_scan = 1;
7851                 priv->direct_ssid_len = (u8)
7852                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7853                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7854         } else
7855                 priv->one_direct_scan = 0;
7856
7857         rc = iwl4965_scan_initiate(priv);
7858
7859         IWL_DEBUG_MAC80211("leave\n");
7860
7861 out_unlock:
7862         spin_unlock_irqrestore(&priv->lock, flags);
7863         mutex_unlock(&priv->mutex);
7864
7865         return rc;
7866 }
7867
7868 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7869                            const u8 *local_addr, const u8 *addr,
7870                            struct ieee80211_key_conf *key)
7871 {
7872         struct iwl4965_priv *priv = hw->priv;
7873         DECLARE_MAC_BUF(mac);
7874         int rc = 0;
7875         u8 sta_id;
7876
7877         IWL_DEBUG_MAC80211("enter\n");
7878
7879         if (!iwl4965_param_hwcrypto) {
7880                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7881                 return -EOPNOTSUPP;
7882         }
7883
7884         if (is_zero_ether_addr(addr))
7885                 /* only support pairwise keys */
7886                 return -EOPNOTSUPP;
7887
7888         sta_id = iwl4965_hw_find_station(priv, addr);
7889         if (sta_id == IWL_INVALID_STATION) {
7890                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7891                                    print_mac(mac, addr));
7892                 return -EINVAL;
7893         }
7894
7895         mutex_lock(&priv->mutex);
7896
7897         iwl4965_scan_cancel_timeout(priv, 100);
7898
7899         switch (cmd) {
7900         case  SET_KEY:
7901                 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7902                 if (!rc) {
7903                         iwl4965_set_rxon_hwcrypto(priv, 1);
7904                         iwl4965_commit_rxon(priv);
7905                         key->hw_key_idx = sta_id;
7906                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7907                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7908                 }
7909                 break;
7910         case DISABLE_KEY:
7911                 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7912                 if (!rc) {
7913                         iwl4965_set_rxon_hwcrypto(priv, 0);
7914                         iwl4965_commit_rxon(priv);
7915                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7916                 }
7917                 break;
7918         default:
7919                 rc = -EINVAL;
7920         }
7921
7922         IWL_DEBUG_MAC80211("leave\n");
7923         mutex_unlock(&priv->mutex);
7924
7925         return rc;
7926 }
7927
7928 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7929                            const struct ieee80211_tx_queue_params *params)
7930 {
7931         struct iwl4965_priv *priv = hw->priv;
7932 #ifdef CONFIG_IWL4965_QOS
7933         unsigned long flags;
7934         int q;
7935 #endif /* CONFIG_IWL4965_QOS */
7936
7937         IWL_DEBUG_MAC80211("enter\n");
7938
7939         if (!iwl4965_is_ready_rf(priv)) {
7940                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7941                 return -EIO;
7942         }
7943
7944         if (queue >= AC_NUM) {
7945                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7946                 return 0;
7947         }
7948
7949 #ifdef CONFIG_IWL4965_QOS
7950         if (!priv->qos_data.qos_enable) {
7951                 priv->qos_data.qos_active = 0;
7952                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7953                 return 0;
7954         }
7955         q = AC_NUM - 1 - queue;
7956
7957         spin_lock_irqsave(&priv->lock, flags);
7958
7959         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7960         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7961         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7962         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7963                         cpu_to_le16((params->burst_time * 100));
7964
7965         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7966         priv->qos_data.qos_active = 1;
7967
7968         spin_unlock_irqrestore(&priv->lock, flags);
7969
7970         mutex_lock(&priv->mutex);
7971         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7972                 iwl4965_activate_qos(priv, 1);
7973         else if (priv->assoc_id && iwl4965_is_associated(priv))
7974                 iwl4965_activate_qos(priv, 0);
7975
7976         mutex_unlock(&priv->mutex);
7977
7978 #endif /*CONFIG_IWL4965_QOS */
7979
7980         IWL_DEBUG_MAC80211("leave\n");
7981         return 0;
7982 }
7983
7984 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7985                                 struct ieee80211_tx_queue_stats *stats)
7986 {
7987         struct iwl4965_priv *priv = hw->priv;
7988         int i, avail;
7989         struct iwl4965_tx_queue *txq;
7990         struct iwl4965_queue *q;
7991         unsigned long flags;
7992
7993         IWL_DEBUG_MAC80211("enter\n");
7994
7995         if (!iwl4965_is_ready_rf(priv)) {
7996                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7997                 return -EIO;
7998         }
7999
8000         spin_lock_irqsave(&priv->lock, flags);
8001
8002         for (i = 0; i < AC_NUM; i++) {
8003                 txq = &priv->txq[i];
8004                 q = &txq->q;
8005                 avail = iwl4965_queue_space(q);
8006
8007                 stats->data[i].len = q->n_window - avail;
8008                 stats->data[i].limit = q->n_window - q->high_mark;
8009                 stats->data[i].count = q->n_window;
8010
8011         }
8012         spin_unlock_irqrestore(&priv->lock, flags);
8013
8014         IWL_DEBUG_MAC80211("leave\n");
8015
8016         return 0;
8017 }
8018
8019 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
8020                              struct ieee80211_low_level_stats *stats)
8021 {
8022         IWL_DEBUG_MAC80211("enter\n");
8023         IWL_DEBUG_MAC80211("leave\n");
8024
8025         return 0;
8026 }
8027
8028 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
8029 {
8030         IWL_DEBUG_MAC80211("enter\n");
8031         IWL_DEBUG_MAC80211("leave\n");
8032
8033         return 0;
8034 }
8035
8036 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
8037 {
8038         struct iwl4965_priv *priv = hw->priv;
8039         unsigned long flags;
8040
8041         mutex_lock(&priv->mutex);
8042         IWL_DEBUG_MAC80211("enter\n");
8043
8044         priv->lq_mngr.lq_ready = 0;
8045 #ifdef CONFIG_IWL4965_HT
8046         spin_lock_irqsave(&priv->lock, flags);
8047         memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
8048         spin_unlock_irqrestore(&priv->lock, flags);
8049 #ifdef CONFIG_IWL4965_HT_AGG
8050 /*      if (priv->lq_mngr.agg_ctrl.granted_ba)
8051                 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
8052
8053         memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl4965_agg_control));
8054         priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
8055         priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
8056         priv->lq_mngr.agg_ctrl.auto_agg = 1;
8057
8058         if (priv->lq_mngr.agg_ctrl.auto_agg)
8059                 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
8060 #endif /*CONFIG_IWL4965_HT_AGG */
8061 #endif /* CONFIG_IWL4965_HT */
8062
8063 #ifdef CONFIG_IWL4965_QOS
8064         iwl4965_reset_qos(priv);
8065 #endif
8066
8067         cancel_delayed_work(&priv->post_associate);
8068
8069         spin_lock_irqsave(&priv->lock, flags);
8070         priv->assoc_id = 0;
8071         priv->assoc_capability = 0;
8072         priv->call_post_assoc_from_beacon = 0;
8073         priv->assoc_station_added = 0;
8074
8075         /* new association get rid of ibss beacon skb */
8076         if (priv->ibss_beacon)
8077                 dev_kfree_skb(priv->ibss_beacon);
8078
8079         priv->ibss_beacon = NULL;
8080
8081         priv->beacon_int = priv->hw->conf.beacon_int;
8082         priv->timestamp1 = 0;
8083         priv->timestamp0 = 0;
8084         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
8085                 priv->beacon_int = 0;
8086
8087         spin_unlock_irqrestore(&priv->lock, flags);
8088
8089         /* we are restarting association process
8090          * clear RXON_FILTER_ASSOC_MSK bit
8091          */
8092         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
8093                 iwl4965_scan_cancel_timeout(priv, 100);
8094                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
8095                 iwl4965_commit_rxon(priv);
8096         }
8097
8098         /* Per mac80211.h: This is only used in IBSS mode... */
8099         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8100
8101                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
8102                 mutex_unlock(&priv->mutex);
8103                 return;
8104         }
8105
8106         if (!iwl4965_is_ready_rf(priv)) {
8107                 IWL_DEBUG_MAC80211("leave - not ready\n");
8108                 mutex_unlock(&priv->mutex);
8109                 return;
8110         }
8111
8112         priv->only_active_channel = 0;
8113
8114         iwl4965_set_rate(priv);
8115
8116         mutex_unlock(&priv->mutex);
8117
8118         IWL_DEBUG_MAC80211("leave\n");
8119
8120 }
8121
8122 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
8123                                  struct ieee80211_tx_control *control)
8124 {
8125         struct iwl4965_priv *priv = hw->priv;
8126         unsigned long flags;
8127
8128         mutex_lock(&priv->mutex);
8129         IWL_DEBUG_MAC80211("enter\n");
8130
8131         if (!iwl4965_is_ready_rf(priv)) {
8132                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8133                 mutex_unlock(&priv->mutex);
8134                 return -EIO;
8135         }
8136
8137         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8138                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
8139                 mutex_unlock(&priv->mutex);
8140                 return -EIO;
8141         }
8142
8143         spin_lock_irqsave(&priv->lock, flags);
8144
8145         if (priv->ibss_beacon)
8146                 dev_kfree_skb(priv->ibss_beacon);
8147
8148         priv->ibss_beacon = skb;
8149
8150         priv->assoc_id = 0;
8151
8152         IWL_DEBUG_MAC80211("leave\n");
8153         spin_unlock_irqrestore(&priv->lock, flags);
8154
8155 #ifdef CONFIG_IWL4965_QOS
8156         iwl4965_reset_qos(priv);
8157 #endif
8158
8159         queue_work(priv->workqueue, &priv->post_associate.work);
8160
8161         mutex_unlock(&priv->mutex);
8162
8163         return 0;
8164 }
8165
8166 #ifdef CONFIG_IWL4965_HT
8167 union ht_cap_info {
8168         struct {
8169                 u16 advanced_coding_cap         :1;
8170                 u16 supported_chan_width_set    :1;
8171                 u16 mimo_power_save_mode        :2;
8172                 u16 green_field                 :1;
8173                 u16 short_GI20                  :1;
8174                 u16 short_GI40                  :1;
8175                 u16 tx_stbc                     :1;
8176                 u16 rx_stbc                     :1;
8177                 u16 beam_forming                :1;
8178                 u16 delayed_ba                  :1;
8179                 u16 maximal_amsdu_size          :1;
8180                 u16 cck_mode_at_40MHz           :1;
8181                 u16 psmp_support                :1;
8182                 u16 stbc_ctrl_frame_support     :1;
8183                 u16 sig_txop_protection_support :1;
8184         };
8185         u16 val;
8186 } __attribute__ ((packed));
8187
8188 union ht_param_info{
8189         struct {
8190                 u8 max_rx_ampdu_factor  :2;
8191                 u8 mpdu_density         :3;
8192                 u8 reserved             :3;
8193         };
8194         u8 val;
8195 } __attribute__ ((packed));
8196
8197 union ht_exra_param_info {
8198         struct {
8199                 u8 ext_chan_offset              :2;
8200                 u8 tx_chan_width                :1;
8201                 u8 rifs_mode                    :1;
8202                 u8 controlled_access_only       :1;
8203                 u8 service_interval_granularity :3;
8204         };
8205         u8 val;
8206 } __attribute__ ((packed));
8207
8208 union ht_operation_mode{
8209         struct {
8210                 u16 op_mode     :2;
8211                 u16 non_GF      :1;
8212                 u16 reserved    :13;
8213         };
8214         u16 val;
8215 } __attribute__ ((packed));
8216
8217
8218 static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8219                             struct ieee80211_ht_additional_info *ht_extra,
8220                             struct sta_ht_info *ht_info_ap,
8221                             struct sta_ht_info *ht_info)
8222 {
8223         union ht_cap_info cap;
8224         union ht_operation_mode op_mode;
8225         union ht_param_info param_info;
8226         union ht_exra_param_info extra_param_info;
8227
8228         IWL_DEBUG_MAC80211("enter: \n");
8229
8230         if (!ht_info) {
8231                 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8232                 return -1;
8233         }
8234
8235         if (ht_cap) {
8236                 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8237                 param_info.val = ht_cap->mac_ht_params_info;
8238                 ht_info->is_ht = 1;
8239                 if (cap.short_GI20)
8240                         ht_info->sgf |= 0x1;
8241                 if (cap.short_GI40)
8242                         ht_info->sgf |= 0x2;
8243                 ht_info->is_green_field = cap.green_field;
8244                 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8245                 ht_info->supported_chan_width = cap.supported_chan_width_set;
8246                 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8247                 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8248
8249                 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8250                 ht_info->mpdu_density = param_info.mpdu_density;
8251
8252                 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8253                                     ht_cap->supported_mcs_set[0],
8254                                     ht_cap->supported_mcs_set[1]);
8255
8256                 if (ht_info_ap) {
8257                         ht_info->control_channel = ht_info_ap->control_channel;
8258                         ht_info->extension_chan_offset =
8259                                 ht_info_ap->extension_chan_offset;
8260                         ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8261                         ht_info->operating_mode = ht_info_ap->operating_mode;
8262                 }
8263
8264                 if (ht_extra) {
8265                         extra_param_info.val = ht_extra->ht_param;
8266                         ht_info->control_channel = ht_extra->control_chan;
8267                         ht_info->extension_chan_offset =
8268                             extra_param_info.ext_chan_offset;
8269                         ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8270                         op_mode.val = (u16)
8271                             le16_to_cpu(ht_extra->operation_mode);
8272                         ht_info->operating_mode = op_mode.op_mode;
8273                         IWL_DEBUG_MAC80211("control channel %d\n",
8274                                             ht_extra->control_chan);
8275                 }
8276         } else
8277                 ht_info->is_ht = 0;
8278
8279         IWL_DEBUG_MAC80211("leave\n");
8280         return 0;
8281 }
8282
8283 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8284                            struct ieee80211_ht_capability *ht_cap,
8285                            struct ieee80211_ht_additional_info *ht_extra)
8286 {
8287         struct iwl4965_priv *priv = hw->priv;
8288         int rs;
8289
8290         IWL_DEBUG_MAC80211("enter: \n");
8291
8292         rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8293         iwl4965_set_rxon_chain(priv);
8294
8295         if (priv && priv->assoc_id &&
8296             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8297                 unsigned long flags;
8298
8299                 spin_lock_irqsave(&priv->lock, flags);
8300                 if (priv->beacon_int)
8301                         queue_work(priv->workqueue, &priv->post_associate.work);
8302                 else
8303                         priv->call_post_assoc_from_beacon = 1;
8304                 spin_unlock_irqrestore(&priv->lock, flags);
8305         }
8306
8307         IWL_DEBUG_MAC80211("leave: control channel %d\n",
8308                         ht_extra->control_chan);
8309         return rs;
8310
8311 }
8312
8313 static void iwl4965_set_ht_capab(struct ieee80211_hw *hw,
8314                              struct ieee80211_ht_capability *ht_cap,
8315                              u8 use_wide_chan)
8316 {
8317         union ht_cap_info cap;
8318         union ht_param_info param_info;
8319
8320         memset(&cap, 0, sizeof(union ht_cap_info));
8321         memset(&param_info, 0, sizeof(union ht_param_info));
8322
8323         cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8324         cap.green_field = 1;
8325         cap.short_GI20 = 1;
8326         cap.short_GI40 = 1;
8327         cap.supported_chan_width_set = use_wide_chan;
8328         cap.mimo_power_save_mode = 0x3;
8329
8330         param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8331         param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8332         ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8333         ht_cap->mac_ht_params_info = (u8) param_info.val;
8334
8335         ht_cap->supported_mcs_set[0] = 0xff;
8336         ht_cap->supported_mcs_set[1] = 0xff;
8337         ht_cap->supported_mcs_set[4] =
8338             (cap.supported_chan_width_set) ? 0x1: 0x0;
8339 }
8340
8341 static void iwl4965_mac_get_ht_capab(struct ieee80211_hw *hw,
8342                                  struct ieee80211_ht_capability *ht_cap)
8343 {
8344         u8 use_wide_channel = 1;
8345         struct iwl4965_priv *priv = hw->priv;
8346
8347         IWL_DEBUG_MAC80211("enter: \n");
8348         if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8349                 use_wide_channel = 0;
8350
8351         /* no fat tx allowed on 2.4GHZ */
8352         if (priv->phymode != MODE_IEEE80211A)
8353                 use_wide_channel = 0;
8354
8355         iwl4965_set_ht_capab(hw, ht_cap, use_wide_channel);
8356         IWL_DEBUG_MAC80211("leave: \n");
8357 }
8358 #endif /*CONFIG_IWL4965_HT*/
8359
8360 /*****************************************************************************
8361  *
8362  * sysfs attributes
8363  *
8364  *****************************************************************************/
8365
8366 #ifdef CONFIG_IWL4965_DEBUG
8367
8368 /*
8369  * The following adds a new attribute to the sysfs representation
8370  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8371  * used for controlling the debug level.
8372  *
8373  * See the level definitions in iwl for details.
8374  */
8375
8376 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8377 {
8378         return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8379 }
8380 static ssize_t store_debug_level(struct device_driver *d,
8381                                  const char *buf, size_t count)
8382 {
8383         char *p = (char *)buf;
8384         u32 val;
8385
8386         val = simple_strtoul(p, &p, 0);
8387         if (p == buf)
8388                 printk(KERN_INFO DRV_NAME
8389                        ": %s is not in hex or decimal form.\n", buf);
8390         else
8391                 iwl4965_debug_level = val;
8392
8393         return strnlen(buf, count);
8394 }
8395
8396 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8397                    show_debug_level, store_debug_level);
8398
8399 #endif /* CONFIG_IWL4965_DEBUG */
8400
8401 static ssize_t show_rf_kill(struct device *d,
8402                             struct device_attribute *attr, char *buf)
8403 {
8404         /*
8405          * 0 - RF kill not enabled
8406          * 1 - SW based RF kill active (sysfs)
8407          * 2 - HW based RF kill active
8408          * 3 - Both HW and SW based RF kill active
8409          */
8410         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8411         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8412                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8413
8414         return sprintf(buf, "%i\n", val);
8415 }
8416
8417 static ssize_t store_rf_kill(struct device *d,
8418                              struct device_attribute *attr,
8419                              const char *buf, size_t count)
8420 {
8421         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8422
8423         mutex_lock(&priv->mutex);
8424         iwl4965_radio_kill_sw(priv, buf[0] == '1');
8425         mutex_unlock(&priv->mutex);
8426
8427         return count;
8428 }
8429
8430 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8431
8432 static ssize_t show_temperature(struct device *d,
8433                                 struct device_attribute *attr, char *buf)
8434 {
8435         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8436
8437         if (!iwl4965_is_alive(priv))
8438                 return -EAGAIN;
8439
8440         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8441 }
8442
8443 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8444
8445 static ssize_t show_rs_window(struct device *d,
8446                               struct device_attribute *attr,
8447                               char *buf)
8448 {
8449         struct iwl4965_priv *priv = d->driver_data;
8450         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8451 }
8452 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8453
8454 static ssize_t show_tx_power(struct device *d,
8455                              struct device_attribute *attr, char *buf)
8456 {
8457         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8458         return sprintf(buf, "%d\n", priv->user_txpower_limit);
8459 }
8460
8461 static ssize_t store_tx_power(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         char *p = (char *)buf;
8467         u32 val;
8468
8469         val = simple_strtoul(p, &p, 10);
8470         if (p == buf)
8471                 printk(KERN_INFO DRV_NAME
8472                        ": %s is not in decimal form.\n", buf);
8473         else
8474                 iwl4965_hw_reg_set_txpower(priv, val);
8475
8476         return count;
8477 }
8478
8479 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8480
8481 static ssize_t show_flags(struct device *d,
8482                           struct device_attribute *attr, char *buf)
8483 {
8484         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8485
8486         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8487 }
8488
8489 static ssize_t store_flags(struct device *d,
8490                            struct device_attribute *attr,
8491                            const char *buf, size_t count)
8492 {
8493         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8494         u32 flags = simple_strtoul(buf, NULL, 0);
8495
8496         mutex_lock(&priv->mutex);
8497         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8498                 /* Cancel any currently running scans... */
8499                 if (iwl4965_scan_cancel_timeout(priv, 100))
8500                         IWL_WARNING("Could not cancel scan.\n");
8501                 else {
8502                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8503                                        flags);
8504                         priv->staging_rxon.flags = cpu_to_le32(flags);
8505                         iwl4965_commit_rxon(priv);
8506                 }
8507         }
8508         mutex_unlock(&priv->mutex);
8509
8510         return count;
8511 }
8512
8513 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8514
8515 static ssize_t show_filter_flags(struct device *d,
8516                                  struct device_attribute *attr, char *buf)
8517 {
8518         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8519
8520         return sprintf(buf, "0x%04X\n",
8521                 le32_to_cpu(priv->active_rxon.filter_flags));
8522 }
8523
8524 static ssize_t store_filter_flags(struct device *d,
8525                                   struct device_attribute *attr,
8526                                   const char *buf, size_t count)
8527 {
8528         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8529         u32 filter_flags = simple_strtoul(buf, NULL, 0);
8530
8531         mutex_lock(&priv->mutex);
8532         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8533                 /* Cancel any currently running scans... */
8534                 if (iwl4965_scan_cancel_timeout(priv, 100))
8535                         IWL_WARNING("Could not cancel scan.\n");
8536                 else {
8537                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8538                                        "0x%04X\n", filter_flags);
8539                         priv->staging_rxon.filter_flags =
8540                                 cpu_to_le32(filter_flags);
8541                         iwl4965_commit_rxon(priv);
8542                 }
8543         }
8544         mutex_unlock(&priv->mutex);
8545
8546         return count;
8547 }
8548
8549 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8550                    store_filter_flags);
8551
8552 static ssize_t show_tune(struct device *d,
8553                          struct device_attribute *attr, char *buf)
8554 {
8555         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8556
8557         return sprintf(buf, "0x%04X\n",
8558                        (priv->phymode << 8) |
8559                         le16_to_cpu(priv->active_rxon.channel));
8560 }
8561
8562 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode);
8563
8564 static ssize_t store_tune(struct device *d,
8565                           struct device_attribute *attr,
8566                           const char *buf, size_t count)
8567 {
8568         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8569         char *p = (char *)buf;
8570         u16 tune = simple_strtoul(p, &p, 0);
8571         u8 phymode = (tune >> 8) & 0xff;
8572         u16 channel = tune & 0xff;
8573
8574         IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8575
8576         mutex_lock(&priv->mutex);
8577         if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8578             (priv->phymode != phymode)) {
8579                 const struct iwl4965_channel_info *ch_info;
8580
8581                 ch_info = iwl4965_get_channel_info(priv, phymode, channel);
8582                 if (!ch_info) {
8583                         IWL_WARNING("Requested invalid phymode/channel "
8584                                     "combination: %d %d\n", phymode, channel);
8585                         mutex_unlock(&priv->mutex);
8586                         return -EINVAL;
8587                 }
8588
8589                 /* Cancel any currently running scans... */
8590                 if (iwl4965_scan_cancel_timeout(priv, 100))
8591                         IWL_WARNING("Could not cancel scan.\n");
8592                 else {
8593                         IWL_DEBUG_INFO("Committing phymode and "
8594                                        "rxon.channel = %d %d\n",
8595                                        phymode, channel);
8596
8597                         iwl4965_set_rxon_channel(priv, phymode, channel);
8598                         iwl4965_set_flags_for_phymode(priv, phymode);
8599
8600                         iwl4965_set_rate(priv);
8601                         iwl4965_commit_rxon(priv);
8602                 }
8603         }
8604         mutex_unlock(&priv->mutex);
8605
8606         return count;
8607 }
8608
8609 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8610
8611 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8612
8613 static ssize_t show_measurement(struct device *d,
8614                                 struct device_attribute *attr, char *buf)
8615 {
8616         struct iwl4965_priv *priv = dev_get_drvdata(d);
8617         struct iwl4965_spectrum_notification measure_report;
8618         u32 size = sizeof(measure_report), len = 0, ofs = 0;
8619         u8 *data = (u8 *) & measure_report;
8620         unsigned long flags;
8621
8622         spin_lock_irqsave(&priv->lock, flags);
8623         if (!(priv->measurement_status & MEASUREMENT_READY)) {
8624                 spin_unlock_irqrestore(&priv->lock, flags);
8625                 return 0;
8626         }
8627         memcpy(&measure_report, &priv->measure_report, size);
8628         priv->measurement_status = 0;
8629         spin_unlock_irqrestore(&priv->lock, flags);
8630
8631         while (size && (PAGE_SIZE - len)) {
8632                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8633                                    PAGE_SIZE - len, 1);
8634                 len = strlen(buf);
8635                 if (PAGE_SIZE - len)
8636                         buf[len++] = '\n';
8637
8638                 ofs += 16;
8639                 size -= min(size, 16U);
8640         }
8641
8642         return len;
8643 }
8644
8645 static ssize_t store_measurement(struct device *d,
8646                                  struct device_attribute *attr,
8647                                  const char *buf, size_t count)
8648 {
8649         struct iwl4965_priv *priv = dev_get_drvdata(d);
8650         struct ieee80211_measurement_params params = {
8651                 .channel = le16_to_cpu(priv->active_rxon.channel),
8652                 .start_time = cpu_to_le64(priv->last_tsf),
8653                 .duration = cpu_to_le16(1),
8654         };
8655         u8 type = IWL_MEASURE_BASIC;
8656         u8 buffer[32];
8657         u8 channel;
8658
8659         if (count) {
8660                 char *p = buffer;
8661                 strncpy(buffer, buf, min(sizeof(buffer), count));
8662                 channel = simple_strtoul(p, NULL, 0);
8663                 if (channel)
8664                         params.channel = channel;
8665
8666                 p = buffer;
8667                 while (*p && *p != ' ')
8668                         p++;
8669                 if (*p)
8670                         type = simple_strtoul(p + 1, NULL, 0);
8671         }
8672
8673         IWL_DEBUG_INFO("Invoking measurement of type %d on "
8674                        "channel %d (for '%s')\n", type, params.channel, buf);
8675         iwl4965_get_measurement(priv, &params, type);
8676
8677         return count;
8678 }
8679
8680 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8681                    show_measurement, store_measurement);
8682 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8683
8684 static ssize_t store_retry_rate(struct device *d,
8685                                 struct device_attribute *attr,
8686                                 const char *buf, size_t count)
8687 {
8688         struct iwl4965_priv *priv = dev_get_drvdata(d);
8689
8690         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8691         if (priv->retry_rate <= 0)
8692                 priv->retry_rate = 1;
8693
8694         return count;
8695 }
8696
8697 static ssize_t show_retry_rate(struct device *d,
8698                                struct device_attribute *attr, char *buf)
8699 {
8700         struct iwl4965_priv *priv = dev_get_drvdata(d);
8701         return sprintf(buf, "%d", priv->retry_rate);
8702 }
8703
8704 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8705                    store_retry_rate);
8706
8707 static ssize_t store_power_level(struct device *d,
8708                                  struct device_attribute *attr,
8709                                  const char *buf, size_t count)
8710 {
8711         struct iwl4965_priv *priv = dev_get_drvdata(d);
8712         int rc;
8713         int mode;
8714
8715         mode = simple_strtoul(buf, NULL, 0);
8716         mutex_lock(&priv->mutex);
8717
8718         if (!iwl4965_is_ready(priv)) {
8719                 rc = -EAGAIN;
8720                 goto out;
8721         }
8722
8723         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8724                 mode = IWL_POWER_AC;
8725         else
8726                 mode |= IWL_POWER_ENABLED;
8727
8728         if (mode != priv->power_mode) {
8729                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8730                 if (rc) {
8731                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8732                         goto out;
8733                 }
8734                 priv->power_mode = mode;
8735         }
8736
8737         rc = count;
8738
8739  out:
8740         mutex_unlock(&priv->mutex);
8741         return rc;
8742 }
8743
8744 #define MAX_WX_STRING 80
8745
8746 /* Values are in microsecond */
8747 static const s32 timeout_duration[] = {
8748         350000,
8749         250000,
8750         75000,
8751         37000,
8752         25000,
8753 };
8754 static const s32 period_duration[] = {
8755         400000,
8756         700000,
8757         1000000,
8758         1000000,
8759         1000000
8760 };
8761
8762 static ssize_t show_power_level(struct device *d,
8763                                 struct device_attribute *attr, char *buf)
8764 {
8765         struct iwl4965_priv *priv = dev_get_drvdata(d);
8766         int level = IWL_POWER_LEVEL(priv->power_mode);
8767         char *p = buf;
8768
8769         p += sprintf(p, "%d ", level);
8770         switch (level) {
8771         case IWL_POWER_MODE_CAM:
8772         case IWL_POWER_AC:
8773                 p += sprintf(p, "(AC)");
8774                 break;
8775         case IWL_POWER_BATTERY:
8776                 p += sprintf(p, "(BATTERY)");
8777                 break;
8778         default:
8779                 p += sprintf(p,
8780                              "(Timeout %dms, Period %dms)",
8781                              timeout_duration[level - 1] / 1000,
8782                              period_duration[level - 1] / 1000);
8783         }
8784
8785         if (!(priv->power_mode & IWL_POWER_ENABLED))
8786                 p += sprintf(p, " OFF\n");
8787         else
8788                 p += sprintf(p, " \n");
8789
8790         return (p - buf + 1);
8791
8792 }
8793
8794 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8795                    store_power_level);
8796
8797 static ssize_t show_channels(struct device *d,
8798                              struct device_attribute *attr, char *buf)
8799 {
8800         struct iwl4965_priv *priv = dev_get_drvdata(d);
8801         int len = 0, i;
8802         struct ieee80211_channel *channels = NULL;
8803         const struct ieee80211_hw_mode *hw_mode = NULL;
8804         int count = 0;
8805
8806         if (!iwl4965_is_ready(priv))
8807                 return -EAGAIN;
8808
8809         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211G);
8810         if (!hw_mode)
8811                 hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211B);
8812         if (hw_mode) {
8813                 channels = hw_mode->channels;
8814                 count = hw_mode->num_channels;
8815         }
8816
8817         len +=
8818             sprintf(&buf[len],
8819                     "Displaying %d channels in 2.4GHz band "
8820                     "(802.11bg):\n", count);
8821
8822         for (i = 0; i < count; i++)
8823                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8824                                channels[i].chan,
8825                                channels[i].power_level,
8826                                channels[i].
8827                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8828                                " (IEEE 802.11h required)" : "",
8829                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8830                                 || (channels[i].
8831                                     flag &
8832                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8833                                ", IBSS",
8834                                channels[i].
8835                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8836                                "active/passive" : "passive only");
8837
8838         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211A);
8839         if (hw_mode) {
8840                 channels = hw_mode->channels;
8841                 count = hw_mode->num_channels;
8842         } else {
8843                 channels = NULL;
8844                 count = 0;
8845         }
8846
8847         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8848                        "(802.11a):\n", count);
8849
8850         for (i = 0; i < count; i++)
8851                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8852                                channels[i].chan,
8853                                channels[i].power_level,
8854                                channels[i].
8855                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8856                                " (IEEE 802.11h required)" : "",
8857                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8858                                 || (channels[i].
8859                                     flag &
8860                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8861                                ", IBSS",
8862                                channels[i].
8863                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8864                                "active/passive" : "passive only");
8865
8866         return len;
8867 }
8868
8869 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8870
8871 static ssize_t show_statistics(struct device *d,
8872                                struct device_attribute *attr, char *buf)
8873 {
8874         struct iwl4965_priv *priv = dev_get_drvdata(d);
8875         u32 size = sizeof(struct iwl4965_notif_statistics);
8876         u32 len = 0, ofs = 0;
8877         u8 *data = (u8 *) & priv->statistics;
8878         int rc = 0;
8879
8880         if (!iwl4965_is_alive(priv))
8881                 return -EAGAIN;
8882
8883         mutex_lock(&priv->mutex);
8884         rc = iwl4965_send_statistics_request(priv);
8885         mutex_unlock(&priv->mutex);
8886
8887         if (rc) {
8888                 len = sprintf(buf,
8889                               "Error sending statistics request: 0x%08X\n", rc);
8890                 return len;
8891         }
8892
8893         while (size && (PAGE_SIZE - len)) {
8894                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8895                                    PAGE_SIZE - len, 1);
8896                 len = strlen(buf);
8897                 if (PAGE_SIZE - len)
8898                         buf[len++] = '\n';
8899
8900                 ofs += 16;
8901                 size -= min(size, 16U);
8902         }
8903
8904         return len;
8905 }
8906
8907 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8908
8909 static ssize_t show_antenna(struct device *d,
8910                             struct device_attribute *attr, char *buf)
8911 {
8912         struct iwl4965_priv *priv = dev_get_drvdata(d);
8913
8914         if (!iwl4965_is_alive(priv))
8915                 return -EAGAIN;
8916
8917         return sprintf(buf, "%d\n", priv->antenna);
8918 }
8919
8920 static ssize_t store_antenna(struct device *d,
8921                              struct device_attribute *attr,
8922                              const char *buf, size_t count)
8923 {
8924         int ant;
8925         struct iwl4965_priv *priv = dev_get_drvdata(d);
8926
8927         if (count == 0)
8928                 return 0;
8929
8930         if (sscanf(buf, "%1i", &ant) != 1) {
8931                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8932                 return count;
8933         }
8934
8935         if ((ant >= 0) && (ant <= 2)) {
8936                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8937                 priv->antenna = (enum iwl4965_antenna)ant;
8938         } else
8939                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8940
8941
8942         return count;
8943 }
8944
8945 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8946
8947 static ssize_t show_status(struct device *d,
8948                            struct device_attribute *attr, char *buf)
8949 {
8950         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8951         if (!iwl4965_is_alive(priv))
8952                 return -EAGAIN;
8953         return sprintf(buf, "0x%08x\n", (int)priv->status);
8954 }
8955
8956 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8957
8958 static ssize_t dump_error_log(struct device *d,
8959                               struct device_attribute *attr,
8960                               const char *buf, size_t count)
8961 {
8962         char *p = (char *)buf;
8963
8964         if (p[0] == '1')
8965                 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8966
8967         return strnlen(buf, count);
8968 }
8969
8970 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8971
8972 static ssize_t dump_event_log(struct device *d,
8973                               struct device_attribute *attr,
8974                               const char *buf, size_t count)
8975 {
8976         char *p = (char *)buf;
8977
8978         if (p[0] == '1')
8979                 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8980
8981         return strnlen(buf, count);
8982 }
8983
8984 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8985
8986 /*****************************************************************************
8987  *
8988  * driver setup and teardown
8989  *
8990  *****************************************************************************/
8991
8992 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8993 {
8994         priv->workqueue = create_workqueue(DRV_NAME);
8995
8996         init_waitqueue_head(&priv->wait_command_queue);
8997
8998         INIT_WORK(&priv->up, iwl4965_bg_up);
8999         INIT_WORK(&priv->restart, iwl4965_bg_restart);
9000         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
9001         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
9002         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
9003         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
9004         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
9005         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
9006         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
9007         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
9008         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
9009         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
9010
9011         iwl4965_hw_setup_deferred_work(priv);
9012
9013         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
9014                      iwl4965_irq_tasklet, (unsigned long)priv);
9015 }
9016
9017 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
9018 {
9019         iwl4965_hw_cancel_deferred_work(priv);
9020
9021         cancel_delayed_work_sync(&priv->init_alive_start);
9022         cancel_delayed_work(&priv->scan_check);
9023         cancel_delayed_work(&priv->alive_start);
9024         cancel_delayed_work(&priv->post_associate);
9025         cancel_work_sync(&priv->beacon_update);
9026 }
9027
9028 static struct attribute *iwl4965_sysfs_entries[] = {
9029         &dev_attr_antenna.attr,
9030         &dev_attr_channels.attr,
9031         &dev_attr_dump_errors.attr,
9032         &dev_attr_dump_events.attr,
9033         &dev_attr_flags.attr,
9034         &dev_attr_filter_flags.attr,
9035 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
9036         &dev_attr_measurement.attr,
9037 #endif
9038         &dev_attr_power_level.attr,
9039         &dev_attr_retry_rate.attr,
9040         &dev_attr_rf_kill.attr,
9041         &dev_attr_rs_window.attr,
9042         &dev_attr_statistics.attr,
9043         &dev_attr_status.attr,
9044         &dev_attr_temperature.attr,
9045         &dev_attr_tune.attr,
9046         &dev_attr_tx_power.attr,
9047
9048         NULL
9049 };
9050
9051 static struct attribute_group iwl4965_attribute_group = {
9052         .name = NULL,           /* put in device directory */
9053         .attrs = iwl4965_sysfs_entries,
9054 };
9055
9056 static struct ieee80211_ops iwl4965_hw_ops = {
9057         .tx = iwl4965_mac_tx,
9058         .start = iwl4965_mac_start,
9059         .stop = iwl4965_mac_stop,
9060         .add_interface = iwl4965_mac_add_interface,
9061         .remove_interface = iwl4965_mac_remove_interface,
9062         .config = iwl4965_mac_config,
9063         .config_interface = iwl4965_mac_config_interface,
9064         .configure_filter = iwl4965_configure_filter,
9065         .set_key = iwl4965_mac_set_key,
9066         .get_stats = iwl4965_mac_get_stats,
9067         .get_tx_stats = iwl4965_mac_get_tx_stats,
9068         .conf_tx = iwl4965_mac_conf_tx,
9069         .get_tsf = iwl4965_mac_get_tsf,
9070         .reset_tsf = iwl4965_mac_reset_tsf,
9071         .beacon_update = iwl4965_mac_beacon_update,
9072         .erp_ie_changed = iwl4965_mac_erp_ie_changed,
9073 #ifdef CONFIG_IWL4965_HT
9074         .conf_ht = iwl4965_mac_conf_ht,
9075         .get_ht_capab = iwl4965_mac_get_ht_capab,
9076 #ifdef CONFIG_IWL4965_HT_AGG
9077         .ht_tx_agg_start = iwl4965_mac_ht_tx_agg_start,
9078         .ht_tx_agg_stop = iwl4965_mac_ht_tx_agg_stop,
9079         .ht_rx_agg_start = iwl4965_mac_ht_rx_agg_start,
9080         .ht_rx_agg_stop = iwl4965_mac_ht_rx_agg_stop,
9081 #endif  /* CONFIG_IWL4965_HT_AGG */
9082 #endif  /* CONFIG_IWL4965_HT */
9083         .hw_scan = iwl4965_mac_hw_scan
9084 };
9085
9086 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9087 {
9088         int err = 0;
9089         struct iwl4965_priv *priv;
9090         struct ieee80211_hw *hw;
9091         int i;
9092
9093         /* Disabling hardware scan means that mac80211 will perform scans
9094          * "the hard way", rather than using device's scan. */
9095         if (iwl4965_param_disable_hw_scan) {
9096                 IWL_DEBUG_INFO("Disabling hw_scan\n");
9097                 iwl4965_hw_ops.hw_scan = NULL;
9098         }
9099
9100         if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
9101             (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
9102                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
9103                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
9104                 err = -EINVAL;
9105                 goto out;
9106         }
9107
9108         /* mac80211 allocates memory for this device instance, including
9109          *   space for this driver's private structure */
9110         hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
9111         if (hw == NULL) {
9112                 IWL_ERROR("Can not allocate network device\n");
9113                 err = -ENOMEM;
9114                 goto out;
9115         }
9116         SET_IEEE80211_DEV(hw, &pdev->dev);
9117
9118         hw->rate_control_algorithm = "iwl-4965-rs";
9119
9120         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
9121         priv = hw->priv;
9122         priv->hw = hw;
9123
9124         priv->pci_dev = pdev;
9125         priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
9126 #ifdef CONFIG_IWL4965_DEBUG
9127         iwl4965_debug_level = iwl4965_param_debug;
9128         atomic_set(&priv->restrict_refcnt, 0);
9129 #endif
9130         priv->retry_rate = 1;
9131
9132         priv->ibss_beacon = NULL;
9133
9134         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
9135          *   the range of signal quality values that we'll provide.
9136          * Negative values for level/noise indicate that we'll provide dBm.
9137          * For WE, at least, non-0 values here *enable* display of values
9138          *   in app (iwconfig). */
9139         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
9140         hw->max_noise = -20;    /* noise level, negative indicates dBm */
9141         hw->max_signal = 100;   /* link quality indication (%) */
9142
9143         /* Tell mac80211 our Tx characteristics */
9144         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
9145
9146         /* Default value; 4 EDCA QOS priorities */
9147         hw->queues = 4;
9148 #ifdef CONFIG_IWL4965_HT
9149 #ifdef CONFIG_IWL4965_HT_AGG
9150         /* Enhanced value; more queues, to support 11n aggregation */
9151         hw->queues = 16;
9152 #endif /* CONFIG_IWL4965_HT_AGG */
9153 #endif /* CONFIG_IWL4965_HT */
9154
9155         spin_lock_init(&priv->lock);
9156         spin_lock_init(&priv->power_data.lock);
9157         spin_lock_init(&priv->sta_lock);
9158         spin_lock_init(&priv->hcmd_lock);
9159         spin_lock_init(&priv->lq_mngr.lock);
9160
9161         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9162                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9163
9164         INIT_LIST_HEAD(&priv->free_frames);
9165
9166         mutex_init(&priv->mutex);
9167         if (pci_enable_device(pdev)) {
9168                 err = -ENODEV;
9169                 goto out_ieee80211_free_hw;
9170         }
9171
9172         pci_set_master(pdev);
9173
9174         /* Clear the driver's (not device's) station table */
9175         iwl4965_clear_stations_table(priv);
9176
9177         priv->data_retry_limit = -1;
9178         priv->ieee_channels = NULL;
9179         priv->ieee_rates = NULL;
9180         priv->phymode = -1;
9181
9182         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9183         if (!err)
9184                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9185         if (err) {
9186                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9187                 goto out_pci_disable_device;
9188         }
9189
9190         pci_set_drvdata(pdev, priv);
9191         err = pci_request_regions(pdev, DRV_NAME);
9192         if (err)
9193                 goto out_pci_disable_device;
9194
9195         /* We disable the RETRY_TIMEOUT register (0x41) to keep
9196          * PCI Tx retries from interfering with C3 CPU state */
9197         pci_write_config_byte(pdev, 0x41, 0x00);
9198
9199         priv->hw_base = pci_iomap(pdev, 0, 0);
9200         if (!priv->hw_base) {
9201                 err = -ENODEV;
9202                 goto out_pci_release_regions;
9203         }
9204
9205         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9206                         (unsigned long long) pci_resource_len(pdev, 0));
9207         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9208
9209         /* Initialize module parameter values here */
9210
9211         /* Disable radio (SW RF KILL) via parameter when loading driver */
9212         if (iwl4965_param_disable) {
9213                 set_bit(STATUS_RF_KILL_SW, &priv->status);
9214                 IWL_DEBUG_INFO("Radio disabled.\n");
9215         }
9216
9217         priv->iw_mode = IEEE80211_IF_TYPE_STA;
9218
9219         priv->ps_mode = 0;
9220         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9221         priv->is_ht_enabled = 1;
9222         priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9223         priv->valid_antenna = 0x7;      /* assume all 3 connected */
9224         priv->ps_mode = IWL_MIMO_PS_NONE;
9225
9226         /* Choose which receivers/antennas to use */
9227         iwl4965_set_rxon_chain(priv);
9228
9229         printk(KERN_INFO DRV_NAME
9230                ": Detected Intel Wireless WiFi Link 4965AGN\n");
9231
9232         /* Device-specific setup */
9233         if (iwl4965_hw_set_hw_setting(priv)) {
9234                 IWL_ERROR("failed to set hw settings\n");
9235                 mutex_unlock(&priv->mutex);
9236                 goto out_iounmap;
9237         }
9238
9239 #ifdef CONFIG_IWL4965_QOS
9240         if (iwl4965_param_qos_enable)
9241                 priv->qos_data.qos_enable = 1;
9242
9243         iwl4965_reset_qos(priv);
9244
9245         priv->qos_data.qos_active = 0;
9246         priv->qos_data.qos_cap.val = 0;
9247 #endif /* CONFIG_IWL4965_QOS */
9248
9249         iwl4965_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9250         iwl4965_setup_deferred_work(priv);
9251         iwl4965_setup_rx_handlers(priv);
9252
9253         priv->rates_mask = IWL_RATES_MASK;
9254         /* If power management is turned on, default to AC mode */
9255         priv->power_mode = IWL_POWER_AC;
9256         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9257
9258         iwl4965_disable_interrupts(priv);
9259
9260         pci_enable_msi(pdev);
9261
9262         err = request_irq(pdev->irq, iwl4965_isr, IRQF_SHARED, DRV_NAME, priv);
9263         if (err) {
9264                 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9265                 goto out_disable_msi;
9266         }
9267
9268         mutex_lock(&priv->mutex);
9269
9270         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9271         if (err) {
9272                 IWL_ERROR("failed to create sysfs device attributes\n");
9273                 mutex_unlock(&priv->mutex);
9274                 goto out_release_irq;
9275         }
9276
9277         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9278          * ucode filename and max sizes are card-specific. */
9279         err = iwl4965_read_ucode(priv);
9280         if (err) {
9281                 IWL_ERROR("Could not read microcode: %d\n", err);
9282                 mutex_unlock(&priv->mutex);
9283                 goto out_pci_alloc;
9284         }
9285
9286         mutex_unlock(&priv->mutex);
9287
9288         IWL_DEBUG_INFO("Queueing UP work.\n");
9289
9290         queue_work(priv->workqueue, &priv->up);
9291
9292         return 0;
9293
9294  out_pci_alloc:
9295         iwl4965_dealloc_ucode_pci(priv);
9296
9297         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9298
9299  out_release_irq:
9300         free_irq(pdev->irq, priv);
9301
9302  out_disable_msi:
9303         pci_disable_msi(pdev);
9304         destroy_workqueue(priv->workqueue);
9305         priv->workqueue = NULL;
9306         iwl4965_unset_hw_setting(priv);
9307
9308  out_iounmap:
9309         pci_iounmap(pdev, priv->hw_base);
9310  out_pci_release_regions:
9311         pci_release_regions(pdev);
9312  out_pci_disable_device:
9313         pci_disable_device(pdev);
9314         pci_set_drvdata(pdev, NULL);
9315  out_ieee80211_free_hw:
9316         ieee80211_free_hw(priv->hw);
9317  out:
9318         return err;
9319 }
9320
9321 static void iwl4965_pci_remove(struct pci_dev *pdev)
9322 {
9323         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9324         struct list_head *p, *q;
9325         int i;
9326
9327         if (!priv)
9328                 return;
9329
9330         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9331
9332         set_bit(STATUS_EXIT_PENDING, &priv->status);
9333
9334         iwl4965_down(priv);
9335
9336         /* Free MAC hash list for ADHOC */
9337         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9338                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9339                         list_del(p);
9340                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9341                 }
9342         }
9343
9344         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9345
9346         iwl4965_dealloc_ucode_pci(priv);
9347
9348         if (priv->rxq.bd)
9349                 iwl4965_rx_queue_free(priv, &priv->rxq);
9350         iwl4965_hw_txq_ctx_free(priv);
9351
9352         iwl4965_unset_hw_setting(priv);
9353         iwl4965_clear_stations_table(priv);
9354
9355         if (priv->mac80211_registered) {
9356                 ieee80211_unregister_hw(priv->hw);
9357                 iwl4965_rate_control_unregister(priv->hw);
9358         }
9359
9360         /*netif_stop_queue(dev); */
9361         flush_workqueue(priv->workqueue);
9362
9363         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9364          * priv->workqueue... so we can't take down the workqueue
9365          * until now... */
9366         destroy_workqueue(priv->workqueue);
9367         priv->workqueue = NULL;
9368
9369         free_irq(pdev->irq, priv);
9370         pci_disable_msi(pdev);
9371         pci_iounmap(pdev, priv->hw_base);
9372         pci_release_regions(pdev);
9373         pci_disable_device(pdev);
9374         pci_set_drvdata(pdev, NULL);
9375
9376         kfree(priv->channel_info);
9377
9378         kfree(priv->ieee_channels);
9379         kfree(priv->ieee_rates);
9380
9381         if (priv->ibss_beacon)
9382                 dev_kfree_skb(priv->ibss_beacon);
9383
9384         ieee80211_free_hw(priv->hw);
9385 }
9386
9387 #ifdef CONFIG_PM
9388
9389 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9390 {
9391         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9392
9393         set_bit(STATUS_IN_SUSPEND, &priv->status);
9394
9395         /* Take down the device; powers it off, etc. */
9396         iwl4965_down(priv);
9397
9398         if (priv->mac80211_registered)
9399                 ieee80211_stop_queues(priv->hw);
9400
9401         pci_save_state(pdev);
9402         pci_disable_device(pdev);
9403         pci_set_power_state(pdev, PCI_D3hot);
9404
9405         return 0;
9406 }
9407
9408 static void iwl4965_resume(struct iwl4965_priv *priv)
9409 {
9410         unsigned long flags;
9411
9412         /* The following it a temporary work around due to the
9413          * suspend / resume not fully initializing the NIC correctly.
9414          * Without all of the following, resume will not attempt to take
9415          * down the NIC (it shouldn't really need to) and will just try
9416          * and bring the NIC back up.  However that fails during the
9417          * ucode verification process.  This then causes iwl4965_down to be
9418          * called *after* iwl4965_hw_nic_init() has succeeded -- which
9419          * then lets the next init sequence succeed.  So, we've
9420          * replicated all of that NIC init code here... */
9421
9422         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9423
9424         iwl4965_hw_nic_init(priv);
9425
9426         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9427         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9428                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9429         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9430         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9431         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9432
9433         /* tell the device to stop sending interrupts */
9434         iwl4965_disable_interrupts(priv);
9435
9436         spin_lock_irqsave(&priv->lock, flags);
9437         iwl4965_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9438
9439         if (!iwl4965_grab_nic_access(priv)) {
9440                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
9441                                 APMG_CLK_VAL_DMA_CLK_RQT);
9442                 iwl4965_release_nic_access(priv);
9443         }
9444         spin_unlock_irqrestore(&priv->lock, flags);
9445
9446         udelay(5);
9447
9448         iwl4965_hw_nic_reset(priv);
9449
9450         /* Bring the device back up */
9451         clear_bit(STATUS_IN_SUSPEND, &priv->status);
9452         queue_work(priv->workqueue, &priv->up);
9453 }
9454
9455 static int iwl4965_pci_resume(struct pci_dev *pdev)
9456 {
9457         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9458         int err;
9459
9460         printk(KERN_INFO "Coming out of suspend...\n");
9461
9462         pci_set_power_state(pdev, PCI_D0);
9463         err = pci_enable_device(pdev);
9464         pci_restore_state(pdev);
9465
9466         /*
9467          * Suspend/Resume resets the PCI configuration space, so we have to
9468          * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9469          * from interfering with C3 CPU state. pci_restore_state won't help
9470          * here since it only restores the first 64 bytes pci config header.
9471          */
9472         pci_write_config_byte(pdev, 0x41, 0x00);
9473
9474         iwl4965_resume(priv);
9475
9476         return 0;
9477 }
9478
9479 #endif /* CONFIG_PM */
9480
9481 /*****************************************************************************
9482  *
9483  * driver and module entry point
9484  *
9485  *****************************************************************************/
9486
9487 static struct pci_driver iwl4965_driver = {
9488         .name = DRV_NAME,
9489         .id_table = iwl4965_hw_card_ids,
9490         .probe = iwl4965_pci_probe,
9491         .remove = __devexit_p(iwl4965_pci_remove),
9492 #ifdef CONFIG_PM
9493         .suspend = iwl4965_pci_suspend,
9494         .resume = iwl4965_pci_resume,
9495 #endif
9496 };
9497
9498 static int __init iwl4965_init(void)
9499 {
9500
9501         int ret;
9502         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9503         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9504         ret = pci_register_driver(&iwl4965_driver);
9505         if (ret) {
9506                 IWL_ERROR("Unable to initialize PCI module\n");
9507                 return ret;
9508         }
9509 #ifdef CONFIG_IWL4965_DEBUG
9510         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9511         if (ret) {
9512                 IWL_ERROR("Unable to create driver sysfs file\n");
9513                 pci_unregister_driver(&iwl4965_driver);
9514                 return ret;
9515         }
9516 #endif
9517
9518         return ret;
9519 }
9520
9521 static void __exit iwl4965_exit(void)
9522 {
9523 #ifdef CONFIG_IWL4965_DEBUG
9524         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9525 #endif
9526         pci_unregister_driver(&iwl4965_driver);
9527 }
9528
9529 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9530 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9531 module_param_named(disable, iwl4965_param_disable, int, 0444);
9532 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9533 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9534 MODULE_PARM_DESC(hwcrypto,
9535                  "using hardware crypto engine (default 0 [software])\n");
9536 module_param_named(debug, iwl4965_param_debug, int, 0444);
9537 MODULE_PARM_DESC(debug, "debug output mask");
9538 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9539 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9540
9541 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9542 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9543
9544 /* QoS */
9545 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9546 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9547
9548 module_exit(iwl4965_exit);
9549 module_init(iwl4965_init);