git.oblomov.eu 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/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-4965.h"
  49 #include "iwl-helpers.h"
  50
  51 #ifdef CONFIG_IWL4965_DEBUG
  52 u32 iwl4965_debug_level;
  53 #endif
  54
  55 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
  56                                   struct iwl4965_tx_queue *txq);
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /* module parameters */
  65 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
  66 static int iwl4965_param_debug;    /* def: 0 = minimal debug log messages */
  67 static int iwl4965_param_disable;  /* def: enable radio */
  68 static int iwl4965_param_antenna;  /* def: 0 = both antennas (use diversity) */
  69 int iwl4965_param_hwcrypto;        /* def: using software encryption */
  70 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
  71 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
  72 int iwl4965_param_amsdu_size_8K;   /* def: enable 8K amsdu size */
  73
  74 /*
  75  * module name, copyright, version, etc.
  76  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  77  */
  78
  79 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  80
  81 #ifdef CONFIG_IWL4965_DEBUG
  82 #define VD "d"
  83 #else
  84 #define VD
  85 #endif
  86
  87 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  88 #define VS "s"
  89 #else
  90 #define VS
  91 #endif
  92
  93 #define IWLWIFI_VERSION "1.2.22k" 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 normal Tx queues (all other queues), no super-size command
 353          * space is needed.
 354          */
 355         len = sizeof(struct iwl4965_cmd) * slots_num;
 356         if (txq_id == IWL_CMD_QUEUE_NUM)
 357                 len +=  IWL_MAX_SCAN_SIZE;
 358         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 359         if (!txq->cmd)
 360                 return -ENOMEM;
 361
 362         /* Alloc driver data array and TFD circular buffer */
 363         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 364         if (rc) {
 365                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 366
 367                 return -ENOMEM;
 368         }
 369         txq->need_update = 0;
 370
 371         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 372          * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
 373         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 374
 375         /* Initialize queue's high/low-water marks, and head/tail indexes */
 376         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 377
 378         /* Tell device where to find queue */
 379         iwl4965_hw_tx_queue_init(priv, txq);
 380
 381         return 0;
 382 }
 383
 384 /**
 385  * iwl4965_tx_queue_free - Deallocate DMA queue.
 386  * @txq: Transmit queue to deallocate.
 387  *
 388  * Empty queue by removing and destroying all BD's.
 389  * Free all buffers.
 390  * 0-fill, but do not free "txq" descriptor structure.
 391  */
 392 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
 393 {
 394         struct iwl4965_queue *q = &txq->q;
 395         struct pci_dev *dev = priv->pci_dev;
 396         int len;
 397
 398         if (q->n_bd == 0)
 399                 return;
 400
 401         /* first, empty all BD's */
 402         for (; q->write_ptr != q->read_ptr;
 403              q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
 404                 iwl4965_hw_txq_free_tfd(priv, txq);
 405
 406         len = sizeof(struct iwl4965_cmd) * q->n_window;
 407         if (q->id == IWL_CMD_QUEUE_NUM)
 408                 len += IWL_MAX_SCAN_SIZE;
 409
 410         /* De-alloc array of command/tx buffers */
 411         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 412
 413         /* De-alloc circular buffer of TFDs */
 414         if (txq->q.n_bd)
 415                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 416                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 417
 418         /* De-alloc array of per-TFD driver data */
 419         if (txq->txb) {
 420                 kfree(txq->txb);
 421                 txq->txb = NULL;
 422         }
 423
 424         /* 0-fill queue descriptor structure */
 425         memset(txq, 0, sizeof(*txq));
 426 }
 427
 428 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 429
 430 /*************** STATION TABLE MANAGEMENT ****
 431  * mac80211 should be examined to determine if sta_info is duplicating
 432  * the functionality provided here
 433  */
 434
 435 /**************************************************************/
 436
 437 #if 0 /* temporary disable till we add real remove station */
 438 /**
 439  * iwl4965_remove_station - Remove driver's knowledge of station.
 440  *
 441  * NOTE:  This does not remove station from device's station table.
 442  */
 443 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
 444 {
 445         int index = IWL_INVALID_STATION;
 446         int i;
 447         unsigned long flags;
 448
 449         spin_lock_irqsave(&priv->sta_lock, flags);
 450
 451         if (is_ap)
 452                 index = IWL_AP_ID;
 453         else if (is_broadcast_ether_addr(addr))
 454                 index = priv->hw_setting.bcast_sta_id;
 455         else
 456                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 457                         if (priv->stations[i].used &&
 458                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 459                                                 addr)) {
 460                                 index = i;
 461                                 break;
 462                         }
 463
 464         if (unlikely(index == IWL_INVALID_STATION))
 465                 goto out;
 466
 467         if (priv->stations[index].used) {
 468                 priv->stations[index].used = 0;
 469                 priv->num_stations--;
 470         }
 471
 472         BUG_ON(priv->num_stations < 0);
 473
 474 out:
 475         spin_unlock_irqrestore(&priv->sta_lock, flags);
 476         return 0;
 477 }
 478 #endif
 479
 480 /**
 481  * iwl4965_clear_stations_table - Clear the driver's station table
 482  *
 483  * NOTE:  This does not clear or otherwise alter the device's station table.
 484  */
 485 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
 486 {
 487         unsigned long flags;
 488
 489         spin_lock_irqsave(&priv->sta_lock, flags);
 490
 491         priv->num_stations = 0;
 492         memset(priv->stations, 0, sizeof(priv->stations));
 493
 494         spin_unlock_irqrestore(&priv->sta_lock, flags);
 495 }
 496
 497 /**
 498  * iwl4965_add_station_flags - Add station to tables in driver and device
 499  */
 500 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
 501                                 int is_ap, u8 flags, void *ht_data)
 502 {
 503         int i;
 504         int index = IWL_INVALID_STATION;
 505         struct iwl4965_station_entry *station;
 506         unsigned long flags_spin;
 507         DECLARE_MAC_BUF(mac);
 508
 509         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 510         if (is_ap)
 511                 index = IWL_AP_ID;
 512         else if (is_broadcast_ether_addr(addr))
 513                 index = priv->hw_setting.bcast_sta_id;
 514         else
 515                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 516                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 517                                                 addr)) {
 518                                 index = i;
 519                                 break;
 520                         }
 521
 522                         if (!priv->stations[i].used &&
 523                             index == IWL_INVALID_STATION)
 524                                 index = i;
 525                 }
 526
 527
 528         /* These two conditions have the same outcome, but keep them separate
 529           since they have different meanings */
 530         if (unlikely(index == IWL_INVALID_STATION)) {
 531                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 532                 return index;
 533         }
 534
 535         if (priv->stations[index].used &&
 536             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 537                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 538                 return index;
 539         }
 540
 541
 542         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 543         station = &priv->stations[index];
 544         station->used = 1;
 545         priv->num_stations++;
 546
 547         /* Set up the REPLY_ADD_STA command to send to device */
 548         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 549         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 550         station->sta.mode = 0;
 551         station->sta.sta.sta_id = index;
 552         station->sta.station_flags = 0;
 553
 554 #ifdef CONFIG_IWL4965_HT
 555         /* BCAST station and IBSS stations do not work in HT mode */
 556         if (index != priv->hw_setting.bcast_sta_id &&
 557             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 558                 iwl4965_set_ht_add_station(priv, index,
 559                                  (struct ieee80211_ht_info *) ht_data);
 560 #endif /*CONFIG_IWL4965_HT*/
 561
 562         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 563
 564         /* Add station to device's station table */
 565         iwl4965_send_add_station(priv, &station->sta, flags);
 566         return index;
 567
 568 }
 569
 570 /*************** DRIVER STATUS FUNCTIONS   *****/
 571
 572 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
 573 {
 574         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 575          * set but EXIT_PENDING is not */
 576         return test_bit(STATUS_READY, &priv->status) &&
 577                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 578                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 579 }
 580
 581 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
 582 {
 583         return test_bit(STATUS_ALIVE, &priv->status);
 584 }
 585
 586 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
 587 {
 588         return test_bit(STATUS_INIT, &priv->status);
 589 }
 590
 591 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
 592 {
 593         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 594                test_bit(STATUS_RF_KILL_SW, &priv->status);
 595 }
 596
 597 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
 598 {
 599
 600         if (iwl4965_is_rfkill(priv))
 601                 return 0;
 602
 603         return iwl4965_is_ready(priv);
 604 }
 605
 606 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 607
 608 #define IWL_CMD(x) case x : return #x
 609
 610 static const char *get_cmd_string(u8 cmd)
 611 {
 612         switch (cmd) {
 613                 IWL_CMD(REPLY_ALIVE);
 614                 IWL_CMD(REPLY_ERROR);
 615                 IWL_CMD(REPLY_RXON);
 616                 IWL_CMD(REPLY_RXON_ASSOC);
 617                 IWL_CMD(REPLY_QOS_PARAM);
 618                 IWL_CMD(REPLY_RXON_TIMING);
 619                 IWL_CMD(REPLY_ADD_STA);
 620                 IWL_CMD(REPLY_REMOVE_STA);
 621                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 622                 IWL_CMD(REPLY_TX);
 623                 IWL_CMD(REPLY_RATE_SCALE);
 624                 IWL_CMD(REPLY_LEDS_CMD);
 625                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 626                 IWL_CMD(RADAR_NOTIFICATION);
 627                 IWL_CMD(REPLY_QUIET_CMD);
 628                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 629                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 630                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 631                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 632                 IWL_CMD(POWER_TABLE_CMD);
 633                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 634                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 635                 IWL_CMD(REPLY_SCAN_CMD);
 636                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 637                 IWL_CMD(SCAN_START_NOTIFICATION);
 638                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 639                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 640                 IWL_CMD(BEACON_NOTIFICATION);
 641                 IWL_CMD(REPLY_TX_BEACON);
 642                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 643                 IWL_CMD(QUIET_NOTIFICATION);
 644                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 645                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 646                 IWL_CMD(REPLY_BT_CONFIG);
 647                 IWL_CMD(REPLY_STATISTICS_CMD);
 648                 IWL_CMD(STATISTICS_NOTIFICATION);
 649                 IWL_CMD(REPLY_CARD_STATE_CMD);
 650                 IWL_CMD(CARD_STATE_NOTIFICATION);
 651                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 652                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
 653                 IWL_CMD(SENSITIVITY_CMD);
 654                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
 655                 IWL_CMD(REPLY_RX_PHY_CMD);
 656                 IWL_CMD(REPLY_RX_MPDU_CMD);
 657                 IWL_CMD(REPLY_4965_RX);
 658                 IWL_CMD(REPLY_COMPRESSED_BA);
 659         default:
 660                 return "UNKNOWN";
 661
 662         }
 663 }
 664
 665 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 666
 667 /**
 668  * iwl4965_enqueue_hcmd - enqueue a uCode command
 669  * @priv: device private data point
 670  * @cmd: a point to the ucode command structure
 671  *
 672  * The function returns < 0 values to indicate the operation is
 673  * failed. On success, it turns the index (> 0) of command in the
 674  * command queue.
 675  */
 676 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 677 {
 678         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 679         struct iwl4965_queue *q = &txq->q;
 680         struct iwl4965_tfd_frame *tfd;
 681         u32 *control_flags;
 682         struct iwl4965_cmd *out_cmd;
 683         u32 idx;
 684         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 685         dma_addr_t phys_addr;
 686         int ret;
 687         unsigned long flags;
 688
 689         /* If any of the command structures end up being larger than
 690          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 691          * we will need to increase the size of the TFD entries */
 692         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 693                !(cmd->meta.flags & CMD_SIZE_HUGE));
 694
 695         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 696                 IWL_ERROR("No space for Tx\n");
 697                 return -ENOSPC;
 698         }
 699
 700         spin_lock_irqsave(&priv->hcmd_lock, flags);
 701
 702         tfd = &txq->bd[q->write_ptr];
 703         memset(tfd, 0, sizeof(*tfd));
 704
 705         control_flags = (u32 *) tfd;
 706
 707         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 708         out_cmd = &txq->cmd[idx];
 709
 710         out_cmd->hdr.cmd = cmd->id;
 711         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 712         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 713
 714         /* At this point, the out_cmd now has all of the incoming cmd
 715          * information */
 716
 717         out_cmd->hdr.flags = 0;
 718         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 719                         INDEX_TO_SEQ(q->write_ptr));
 720         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 721                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 722
 723         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 724                         offsetof(struct iwl4965_cmd, hdr);
 725         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 726
 727         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 728                      "%d bytes at %d[%d]:%d\n",
 729                      get_cmd_string(out_cmd->hdr.cmd),
 730                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 731                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 732
 733         txq->need_update = 1;
 734
 735         /* Set up entry in queue's byte count circular buffer */
 736         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 737
 738         /* Increment and update queue's write index */
 739         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
 740         iwl4965_tx_queue_update_write_ptr(priv, txq);
 741
 742         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 743         return ret ? ret : idx;
 744 }
 745
 746 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 747 {
 748         int ret;
 749
 750         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 751
 752         /* An asynchronous command can not expect an SKB to be set. */
 753         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 754
 755         /* An asynchronous command MUST have a callback. */
 756         BUG_ON(!cmd->meta.u.callback);
 757
 758         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 759                 return -EBUSY;
 760
 761         ret = iwl4965_enqueue_hcmd(priv, cmd);
 762         if (ret < 0) {
 763                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 764                           get_cmd_string(cmd->id), ret);
 765                 return ret;
 766         }
 767         return 0;
 768 }
 769
 770 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 771 {
 772         int cmd_idx;
 773         int ret;
 774         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 775
 776         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 777
 778          /* A synchronous command can not have a callback set. */
 779         BUG_ON(cmd->meta.u.callback != NULL);
 780
 781         if (atomic_xchg(&entry, 1)) {
 782                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 783                           get_cmd_string(cmd->id));
 784                 return -EBUSY;
 785         }
 786
 787         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 788
 789         if (cmd->meta.flags & CMD_WANT_SKB)
 790                 cmd->meta.source = &cmd->meta;
 791
 792         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
 793         if (cmd_idx < 0) {
 794                 ret = cmd_idx;
 795                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 796                           get_cmd_string(cmd->id), ret);
 797                 goto out;
 798         }
 799
 800         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 801                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 802                         HOST_COMPLETE_TIMEOUT);
 803         if (!ret) {
 804                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 805                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 806                                   get_cmd_string(cmd->id),
 807                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 808
 809                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 810                         ret = -ETIMEDOUT;
 811                         goto cancel;
 812                 }
 813         }
 814
 815         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 816                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 817                                get_cmd_string(cmd->id));
 818                 ret = -ECANCELED;
 819                 goto fail;
 820         }
 821         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 822                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 823                                get_cmd_string(cmd->id));
 824                 ret = -EIO;
 825                 goto fail;
 826         }
 827         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 828                 IWL_ERROR("Error: Response NULL in '%s'\n",
 829                           get_cmd_string(cmd->id));
 830                 ret = -EIO;
 831                 goto out;
 832         }
 833
 834         ret = 0;
 835         goto out;
 836
 837 cancel:
 838         if (cmd->meta.flags & CMD_WANT_SKB) {
 839                 struct iwl4965_cmd *qcmd;
 840
 841                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 842                  * TX cmd queue. Otherwise in case the cmd comes
 843                  * in later, it will possibly set an invalid
 844                  * address (cmd->meta.source). */
 845                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 846                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 847         }
 848 fail:
 849         if (cmd->meta.u.skb) {
 850                 dev_kfree_skb_any(cmd->meta.u.skb);
 851                 cmd->meta.u.skb = NULL;
 852         }
 853 out:
 854         atomic_set(&entry, 0);
 855         return ret;
 856 }
 857
 858 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 859 {
 860         if (cmd->meta.flags & CMD_ASYNC)
 861                 return iwl4965_send_cmd_async(priv, cmd);
 862
 863         return iwl4965_send_cmd_sync(priv, cmd);
 864 }
 865
 866 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
 867 {
 868         struct iwl4965_host_cmd cmd = {
 869                 .id = id,
 870                 .len = len,
 871                 .data = data,
 872         };
 873
 874         return iwl4965_send_cmd_sync(priv, &cmd);
 875 }
 876
 877 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
 878 {
 879         struct iwl4965_host_cmd cmd = {
 880                 .id = id,
 881                 .len = sizeof(val),
 882                 .data = &val,
 883         };
 884
 885         return iwl4965_send_cmd_sync(priv, &cmd);
 886 }
 887
 888 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
 889 {
 890         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 891 }
 892
 893 /**
 894  * iwl4965_rxon_add_station - add station into station table.
 895  *
 896  * there is only one AP station with id= IWL_AP_ID
 897  * NOTE: mutex must be held before calling this fnction
 898  */
 899 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
 900                                 const u8 *addr, int is_ap)
 901 {
 902         u8 sta_id;
 903
 904         /* Add station to device's station table */
 905 #ifdef CONFIG_IWL4965_HT
 906         struct ieee80211_conf *conf = &priv->hw->conf;
 907         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 908
 909         if ((is_ap) &&
 910             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 911             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 912                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 913                                                    0, cur_ht_config);
 914         else
 915 #endif /* CONFIG_IWL4965_HT */
 916                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 917                                                    0, NULL);
 918
 919         /* Set up default rate scaling table in device's station table */
 920         iwl4965_add_station(priv, addr, is_ap);
 921
 922         return sta_id;
 923 }
 924
 925 /**
 926  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
 927  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 928  * @channel: Any channel valid for the requested phymode
 929
 930  * In addition to setting the staging RXON, priv->phymode is also set.
 931  *
 932  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 933  * in the staging RXON flag structure based on the phymode
 934  */
 935 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode,
 936                                  u16 channel)
 937 {
 938         if (!iwl4965_get_channel_info(priv, phymode, channel)) {
 939                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 940                                channel, phymode);
 941                 return -EINVAL;
 942         }
 943
 944         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 945             (priv->phymode == phymode))
 946                 return 0;
 947
 948         priv->staging_rxon.channel = cpu_to_le16(channel);
 949         if (phymode == MODE_IEEE80211A)
 950                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 951         else
 952                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 953
 954         priv->phymode = phymode;
 955
 956         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
 957
 958         return 0;
 959 }
 960
 961 /**
 962  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 963  *
 964  * NOTE:  This is really only useful during development and can eventually
 965  * be #ifdef'd out once the driver is stable and folks aren't actively
 966  * making changes
 967  */
 968 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 969 {
 970         int error = 0;
 971         int counter = 1;
 972
 973         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 974                 error |= le32_to_cpu(rxon->flags &
 975                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 976                                  RXON_FLG_RADAR_DETECT_MSK));
 977                 if (error)
 978                         IWL_WARNING("check 24G fields %d | %d\n",
 979                                     counter++, error);
 980         } else {
 981                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 982                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 983                 if (error)
 984                         IWL_WARNING("check 52 fields %d | %d\n",
 985                                     counter++, error);
 986                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 987                 if (error)
 988                         IWL_WARNING("check 52 CCK %d | %d\n",
 989                                     counter++, error);
 990         }
 991         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 992         if (error)
 993                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 994
 995         /* make sure basic rates 6Mbps and 1Mbps are supported */
 996         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 997                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 998         if (error)
 999                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
1000
1001         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
1002         if (error)
1003                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
1004
1005         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
1006                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
1007         if (error)
1008                 IWL_WARNING("check CCK and short slot %d | %d\n",
1009                             counter++, error);
1010
1011         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
1012                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1013         if (error)
1014                 IWL_WARNING("check CCK & auto detect %d | %d\n",
1015                             counter++, error);
1016
1017         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1018                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1019         if (error)
1020                 IWL_WARNING("check TGG and auto detect %d | %d\n",
1021                             counter++, error);
1022
1023         if (error)
1024                 IWL_WARNING("Tuning to channel %d\n",
1025                             le16_to_cpu(rxon->channel));
1026
1027         if (error) {
1028                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1029                 return -1;
1030         }
1031         return 0;
1032 }
1033
1034 /**
1035  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1036  * @priv: staging_rxon is compared to active_rxon
1037  *
1038  * If the RXON structure is changing enough to require a new tune,
1039  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1040  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1041  */
1042 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1043 {
1044
1045         /* These items are only settable from the full RXON command */
1046         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1047             compare_ether_addr(priv->staging_rxon.bssid_addr,
1048                                priv->active_rxon.bssid_addr) ||
1049             compare_ether_addr(priv->staging_rxon.node_addr,
1050                                priv->active_rxon.node_addr) ||
1051             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1052                                priv->active_rxon.wlap_bssid_addr) ||
1053             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1054             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1055             (priv->staging_rxon.air_propagation !=
1056              priv->active_rxon.air_propagation) ||
1057             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1058              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1059             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1060              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1061             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1062             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1063                 return 1;
1064
1065         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1066          * be updated with the RXON_ASSOC command -- however only some
1067          * flag transitions are allowed using RXON_ASSOC */
1068
1069         /* Check if we are not switching bands */
1070         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1071             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1072                 return 1;
1073
1074         /* Check if we are switching association toggle */
1075         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1076                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1077                 return 1;
1078
1079         return 0;
1080 }
1081
1082 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1083 {
1084         int rc = 0;
1085         struct iwl4965_rx_packet *res = NULL;
1086         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1087         struct iwl4965_host_cmd cmd = {
1088                 .id = REPLY_RXON_ASSOC,
1089                 .len = sizeof(rxon_assoc),
1090                 .meta.flags = CMD_WANT_SKB,
1091                 .data = &rxon_assoc,
1092         };
1093         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1094         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1095
1096         if ((rxon1->flags == rxon2->flags) &&
1097             (rxon1->filter_flags == rxon2->filter_flags) &&
1098             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1099             (rxon1->ofdm_ht_single_stream_basic_rates ==
1100              rxon2->ofdm_ht_single_stream_basic_rates) &&
1101             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1102              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1103             (rxon1->rx_chain == rxon2->rx_chain) &&
1104             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1105                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1106                 return 0;
1107         }
1108
1109         rxon_assoc.flags = priv->staging_rxon.flags;
1110         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1111         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1112         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1113         rxon_assoc.reserved = 0;
1114         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1115             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1116         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1117             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1118         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1119
1120         rc = iwl4965_send_cmd_sync(priv, &cmd);
1121         if (rc)
1122                 return rc;
1123
1124         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1125         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1126                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1127                 rc = -EIO;
1128         }
1129
1130         priv->alloc_rxb_skb--;
1131         dev_kfree_skb_any(cmd.meta.u.skb);
1132
1133         return rc;
1134 }
1135
1136 /**
1137  * iwl4965_commit_rxon - commit staging_rxon to hardware
1138  *
1139  * The RXON command in staging_rxon is committed to the hardware and
1140  * the active_rxon structure is updated with the new data.  This
1141  * function correctly transitions out of the RXON_ASSOC_MSK state if
1142  * a HW tune is required based on the RXON structure changes.
1143  */
1144 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1145 {
1146         /* cast away the const for active_rxon in this function */
1147         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1148         DECLARE_MAC_BUF(mac);
1149         int rc = 0;
1150
1151         if (!iwl4965_is_alive(priv))
1152                 return -1;
1153
1154         /* always get timestamp with Rx frame */
1155         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1156
1157         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1158         if (rc) {
1159                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1160                 return -EINVAL;
1161         }
1162
1163         /* If we don't need to send a full RXON, we can use
1164          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1165          * and other flags for the current radio configuration. */
1166         if (!iwl4965_full_rxon_required(priv)) {
1167                 rc = iwl4965_send_rxon_assoc(priv);
1168                 if (rc) {
1169                         IWL_ERROR("Error setting RXON_ASSOC "
1170                                   "configuration (%d).\n", rc);
1171                         return rc;
1172                 }
1173
1174                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1175
1176                 return 0;
1177         }
1178
1179         /* station table will be cleared */
1180         priv->assoc_station_added = 0;
1181
1182 #ifdef CONFIG_IWL4965_SENSITIVITY
1183         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1184         if (!priv->error_recovering)
1185                 priv->start_calib = 0;
1186
1187         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1188 #endif /* CONFIG_IWL4965_SENSITIVITY */
1189
1190         /* If we are currently associated and the new config requires
1191          * an RXON_ASSOC and the new config wants the associated mask enabled,
1192          * we must clear the associated from the active configuration
1193          * before we apply the new config */
1194         if (iwl4965_is_associated(priv) &&
1195             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1196                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1197                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1198
1199                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1200                                       sizeof(struct iwl4965_rxon_cmd),
1201                                       &priv->active_rxon);
1202
1203                 /* If the mask clearing failed then we set
1204                  * active_rxon back to what it was previously */
1205                 if (rc) {
1206                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1207                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1208                                   "configuration (%d).\n", rc);
1209                         return rc;
1210                 }
1211         }
1212
1213         IWL_DEBUG_INFO("Sending RXON\n"
1214                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1215                        "* channel = %d\n"
1216                        "* bssid = %s\n",
1217                        ((priv->staging_rxon.filter_flags &
1218                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1219                        le16_to_cpu(priv->staging_rxon.channel),
1220                        print_mac(mac, priv->staging_rxon.bssid_addr));
1221
1222         /* Apply the new configuration */
1223         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1224                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1225         if (rc) {
1226                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1227                 return rc;
1228         }
1229
1230         iwl4965_clear_stations_table(priv);
1231
1232 #ifdef CONFIG_IWL4965_SENSITIVITY
1233         if (!priv->error_recovering)
1234                 priv->start_calib = 0;
1235
1236         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1237         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1238 #endif /* CONFIG_IWL4965_SENSITIVITY */
1239
1240         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1241
1242         /* If we issue a new RXON command which required a tune then we must
1243          * send a new TXPOWER command or we won't be able to Tx any frames */
1244         rc = iwl4965_hw_reg_send_txpower(priv);
1245         if (rc) {
1246                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1247                 return rc;
1248         }
1249
1250         /* Add the broadcast address so we can send broadcast frames */
1251         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1252             IWL_INVALID_STATION) {
1253                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1254                 return -EIO;
1255         }
1256
1257         /* If we have set the ASSOC_MSK and we are in BSS mode then
1258          * add the IWL_AP_ID to the station rate table */
1259         if (iwl4965_is_associated(priv) &&
1260             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1261                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1262                     == IWL_INVALID_STATION) {
1263                         IWL_ERROR("Error adding AP address for transmit.\n");
1264                         return -EIO;
1265                 }
1266                 priv->assoc_station_added = 1;
1267         }
1268
1269         return 0;
1270 }
1271
1272 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1273 {
1274         struct iwl4965_bt_cmd bt_cmd = {
1275                 .flags = 3,
1276                 .lead_time = 0xAA,
1277                 .max_kill = 1,
1278                 .kill_ack_mask = 0,
1279                 .kill_cts_mask = 0,
1280         };
1281
1282         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1283                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1284 }
1285
1286 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1287 {
1288         int rc = 0;
1289         struct iwl4965_rx_packet *res;
1290         struct iwl4965_host_cmd cmd = {
1291                 .id = REPLY_SCAN_ABORT_CMD,
1292                 .meta.flags = CMD_WANT_SKB,
1293         };
1294
1295         /* If there isn't a scan actively going on in the hardware
1296          * then we are in between scan bands and not actually
1297          * actively scanning, so don't send the abort command */
1298         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1299                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1300                 return 0;
1301         }
1302
1303         rc = iwl4965_send_cmd_sync(priv, &cmd);
1304         if (rc) {
1305                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1306                 return rc;
1307         }
1308
1309         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1310         if (res->u.status != CAN_ABORT_STATUS) {
1311                 /* The scan abort will return 1 for success or
1312                  * 2 for "failure".  A failure condition can be
1313                  * due to simply not being in an active scan which
1314                  * can occur if we send the scan abort before we
1315                  * the microcode has notified us that a scan is
1316                  * completed. */
1317                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1318                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1319                 clear_bit(STATUS_SCAN_HW, &priv->status);
1320         }
1321
1322         dev_kfree_skb_any(cmd.meta.u.skb);
1323
1324         return rc;
1325 }
1326
1327 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1328                                         struct iwl4965_cmd *cmd,
1329                                         struct sk_buff *skb)
1330 {
1331         return 1;
1332 }
1333
1334 /*
1335  * CARD_STATE_CMD
1336  *
1337  * Use: Sets the device's internal card state to enable, disable, or halt
1338  *
1339  * When in the 'enable' state the card operates as normal.
1340  * When in the 'disable' state, the card enters into a low power mode.
1341  * When in the 'halt' state, the card is shut down and must be fully
1342  * restarted to come back on.
1343  */
1344 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1345 {
1346         struct iwl4965_host_cmd cmd = {
1347                 .id = REPLY_CARD_STATE_CMD,
1348                 .len = sizeof(u32),
1349                 .data = &flags,
1350                 .meta.flags = meta_flag,
1351         };
1352
1353         if (meta_flag & CMD_ASYNC)
1354                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1355
1356         return iwl4965_send_cmd(priv, &cmd);
1357 }
1358
1359 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1360                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1361 {
1362         struct iwl4965_rx_packet *res = NULL;
1363
1364         if (!skb) {
1365                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1366                 return 1;
1367         }
1368
1369         res = (struct iwl4965_rx_packet *)skb->data;
1370         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1371                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1372                           res->hdr.flags);
1373                 return 1;
1374         }
1375
1376         switch (res->u.add_sta.status) {
1377         case ADD_STA_SUCCESS_MSK:
1378                 break;
1379         default:
1380                 break;
1381         }
1382
1383         /* We didn't cache the SKB; let the caller free it */
1384         return 1;
1385 }
1386
1387 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1388                          struct iwl4965_addsta_cmd *sta, u8 flags)
1389 {
1390         struct iwl4965_rx_packet *res = NULL;
1391         int rc = 0;
1392         struct iwl4965_host_cmd cmd = {
1393                 .id = REPLY_ADD_STA,
1394                 .len = sizeof(struct iwl4965_addsta_cmd),
1395                 .meta.flags = flags,
1396                 .data = sta,
1397         };
1398
1399         if (flags & CMD_ASYNC)
1400                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1401         else
1402                 cmd.meta.flags |= CMD_WANT_SKB;
1403
1404         rc = iwl4965_send_cmd(priv, &cmd);
1405
1406         if (rc || (flags & CMD_ASYNC))
1407                 return rc;
1408
1409         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1410         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1411                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1412                           res->hdr.flags);
1413                 rc = -EIO;
1414         }
1415
1416         if (rc == 0) {
1417                 switch (res->u.add_sta.status) {
1418                 case ADD_STA_SUCCESS_MSK:
1419                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1420                         break;
1421                 default:
1422                         rc = -EIO;
1423                         IWL_WARNING("REPLY_ADD_STA failed\n");
1424                         break;
1425                 }
1426         }
1427
1428         priv->alloc_rxb_skb--;
1429         dev_kfree_skb_any(cmd.meta.u.skb);
1430
1431         return rc;
1432 }
1433
1434 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1435                                    struct ieee80211_key_conf *keyconf,
1436                                    u8 sta_id)
1437 {
1438         unsigned long flags;
1439         __le16 key_flags = 0;
1440
1441         switch (keyconf->alg) {
1442         case ALG_CCMP:
1443                 key_flags |= STA_KEY_FLG_CCMP;
1444                 key_flags |= cpu_to_le16(
1445                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1446                 key_flags &= ~STA_KEY_FLG_INVALID;
1447                 break;
1448         case ALG_TKIP:
1449         case ALG_WEP:
1450         default:
1451                 return -EINVAL;
1452         }
1453         spin_lock_irqsave(&priv->sta_lock, flags);
1454         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1455         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1456         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1457                keyconf->keylen);
1458
1459         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1460                keyconf->keylen);
1461         priv->stations[sta_id].sta.key.key_flags = key_flags;
1462         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1463         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1464
1465         spin_unlock_irqrestore(&priv->sta_lock, flags);
1466
1467         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1468         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1469         return 0;
1470 }
1471
1472 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1473 {
1474         unsigned long flags;
1475
1476         spin_lock_irqsave(&priv->sta_lock, flags);
1477         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1478         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1479         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1480         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1481         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1482         spin_unlock_irqrestore(&priv->sta_lock, flags);
1483
1484         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1485         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1486         return 0;
1487 }
1488
1489 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1490 {
1491         struct list_head *element;
1492
1493         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1494                        priv->frames_count);
1495
1496         while (!list_empty(&priv->free_frames)) {
1497                 element = priv->free_frames.next;
1498                 list_del(element);
1499                 kfree(list_entry(element, struct iwl4965_frame, list));
1500                 priv->frames_count--;
1501         }
1502
1503         if (priv->frames_count) {
1504                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1505                             priv->frames_count);
1506                 priv->frames_count = 0;
1507         }
1508 }
1509
1510 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1511 {
1512         struct iwl4965_frame *frame;
1513         struct list_head *element;
1514         if (list_empty(&priv->free_frames)) {
1515                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1516                 if (!frame) {
1517                         IWL_ERROR("Could not allocate frame!\n");
1518                         return NULL;
1519                 }
1520
1521                 priv->frames_count++;
1522                 return frame;
1523         }
1524
1525         element = priv->free_frames.next;
1526         list_del(element);
1527         return list_entry(element, struct iwl4965_frame, list);
1528 }
1529
1530 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1531 {
1532         memset(frame, 0, sizeof(*frame));
1533         list_add(&frame->list, &priv->free_frames);
1534 }
1535
1536 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1537                                 struct ieee80211_hdr *hdr,
1538                                 const u8 *dest, int left)
1539 {
1540
1541         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1542             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1543              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1544                 return 0;
1545
1546         if (priv->ibss_beacon->len > left)
1547                 return 0;
1548
1549         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1550
1551         return priv->ibss_beacon->len;
1552 }
1553
1554 int iwl4965_rate_index_from_plcp(int plcp)
1555 {
1556         int i = 0;
1557
1558         /* 4965 HT rate format */
1559         if (plcp & RATE_MCS_HT_MSK) {
1560                 i = (plcp & 0xff);
1561
1562                 if (i >= IWL_RATE_MIMO_6M_PLCP)
1563                         i = i - IWL_RATE_MIMO_6M_PLCP;
1564
1565                 i += IWL_FIRST_OFDM_RATE;
1566                 /* skip 9M not supported in ht*/
1567                 if (i >= IWL_RATE_9M_INDEX)
1568                         i += 1;
1569                 if ((i >= IWL_FIRST_OFDM_RATE) &&
1570                     (i <= IWL_LAST_OFDM_RATE))
1571                         return i;
1572
1573         /* 4965 legacy rate format, search for match in table */
1574         } else {
1575                 for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1576                         if (iwl4965_rates[i].plcp == (plcp &0xFF))
1577                                 return i;
1578         }
1579         return -1;
1580 }
1581
1582 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1583 {
1584         u8 i;
1585
1586         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1587              i = iwl4965_rates[i].next_ieee) {
1588                 if (rate_mask & (1 << i))
1589                         return iwl4965_rates[i].plcp;
1590         }
1591
1592         return IWL_RATE_INVALID;
1593 }
1594
1595 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1596 {
1597         struct iwl4965_frame *frame;
1598         unsigned int frame_size;
1599         int rc;
1600         u8 rate;
1601
1602         frame = iwl4965_get_free_frame(priv);
1603
1604         if (!frame) {
1605                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1606                           "command.\n");
1607                 return -ENOMEM;
1608         }
1609
1610         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1611                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1612                                                 0xFF0);
1613                 if (rate == IWL_INVALID_RATE)
1614                         rate = IWL_RATE_6M_PLCP;
1615         } else {
1616                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1617                 if (rate == IWL_INVALID_RATE)
1618                         rate = IWL_RATE_1M_PLCP;
1619         }
1620
1621         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1622
1623         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1624                               &frame->u.cmd[0]);
1625
1626         iwl4965_free_frame(priv, frame);
1627
1628         return rc;
1629 }
1630
1631 /******************************************************************************
1632  *
1633  * EEPROM related functions
1634  *
1635  ******************************************************************************/
1636
1637 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1638 {
1639         memcpy(mac, priv->eeprom.mac_address, 6);
1640 }
1641
1642 /**
1643  * iwl4965_eeprom_init - read EEPROM contents
1644  *
1645  * Load the EEPROM contents from adapter into priv->eeprom
1646  *
1647  * NOTE:  This routine uses the non-debug IO access functions.
1648  */
1649 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1650 {
1651         u16 *e = (u16 *)&priv->eeprom;
1652         u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1653         u32 r;
1654         int sz = sizeof(priv->eeprom);
1655         int rc;
1656         int i;
1657         u16 addr;
1658
1659         /* The EEPROM structure has several padding buffers within it
1660          * and when adding new EEPROM maps is subject to programmer errors
1661          * which may be very difficult to identify without explicitly
1662          * checking the resulting size of the eeprom map. */
1663         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1664
1665         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1666                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1667                 return -ENOENT;
1668         }
1669
1670         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1671         rc = iwl4965_eeprom_acquire_semaphore(priv);
1672         if (rc < 0) {
1673                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1674                 return -ENOENT;
1675         }
1676
1677         /* eeprom is an array of 16bit values */
1678         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1679                 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1680                 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1681
1682                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1683                                         i += IWL_EEPROM_ACCESS_DELAY) {
1684                         r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1685                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1686                                 break;
1687                         udelay(IWL_EEPROM_ACCESS_DELAY);
1688                 }
1689
1690                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1691                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1692                         rc = -ETIMEDOUT;
1693                         goto done;
1694                 }
1695                 e[addr / 2] = le16_to_cpu(r >> 16);
1696         }
1697         rc = 0;
1698
1699 done:
1700         iwl4965_eeprom_release_semaphore(priv);
1701         return rc;
1702 }
1703
1704 /******************************************************************************
1705  *
1706  * Misc. internal state and helper functions
1707  *
1708  ******************************************************************************/
1709 #ifdef CONFIG_IWL4965_DEBUG
1710
1711 /**
1712  * iwl4965_report_frame - dump frame to syslog during debug sessions
1713  *
1714  * You may hack this function to show different aspects of received frames,
1715  * including selective frame dumps.
1716  * group100 parameter selects whether to show 1 out of 100 good frames.
1717  *
1718  * TODO:  This was originally written for 3945, need to audit for
1719  *        proper operation with 4965.
1720  */
1721 void iwl4965_report_frame(struct iwl4965_priv *priv,
1722                       struct iwl4965_rx_packet *pkt,
1723                       struct ieee80211_hdr *header, int group100)
1724 {
1725         u32 to_us;
1726         u32 print_summary = 0;
1727         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1728         u32 hundred = 0;
1729         u32 dataframe = 0;
1730         u16 fc;
1731         u16 seq_ctl;
1732         u16 channel;
1733         u16 phy_flags;
1734         int rate_sym;
1735         u16 length;
1736         u16 status;
1737         u16 bcn_tmr;
1738         u32 tsf_low;
1739         u64 tsf;
1740         u8 rssi;
1741         u8 agc;
1742         u16 sig_avg;
1743         u16 noise_diff;
1744         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1745         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1746         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1747         u8 *data = IWL_RX_DATA(pkt);
1748
1749         /* MAC header */
1750         fc = le16_to_cpu(header->frame_control);
1751         seq_ctl = le16_to_cpu(header->seq_ctrl);
1752
1753         /* metadata */
1754         channel = le16_to_cpu(rx_hdr->channel);
1755         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1756         rate_sym = rx_hdr->rate;
1757         length = le16_to_cpu(rx_hdr->len);
1758
1759         /* end-of-frame status and timestamp */
1760         status = le32_to_cpu(rx_end->status);
1761         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1762         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1763         tsf = le64_to_cpu(rx_end->timestamp);
1764
1765         /* signal statistics */
1766         rssi = rx_stats->rssi;
1767         agc = rx_stats->agc;
1768         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1769         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1770
1771         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1772
1773         /* if data frame is to us and all is good,
1774          *   (optionally) print summary for only 1 out of every 100 */
1775         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1776             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1777                 dataframe = 1;
1778                 if (!group100)
1779                         print_summary = 1;      /* print each frame */
1780                 else if (priv->framecnt_to_us < 100) {
1781                         priv->framecnt_to_us++;
1782                         print_summary = 0;
1783                 } else {
1784                         priv->framecnt_to_us = 0;
1785                         print_summary = 1;
1786                         hundred = 1;
1787                 }
1788         } else {
1789                 /* print summary for all other frames */
1790                 print_summary = 1;
1791         }
1792
1793         if (print_summary) {
1794                 char *title;
1795                 u32 rate;
1796
1797                 if (hundred)
1798                         title = "100Frames";
1799                 else if (fc & IEEE80211_FCTL_RETRY)
1800                         title = "Retry";
1801                 else if (ieee80211_is_assoc_response(fc))
1802                         title = "AscRsp";
1803                 else if (ieee80211_is_reassoc_response(fc))
1804                         title = "RasRsp";
1805                 else if (ieee80211_is_probe_response(fc)) {
1806                         title = "PrbRsp";
1807                         print_dump = 1; /* dump frame contents */
1808                 } else if (ieee80211_is_beacon(fc)) {
1809                         title = "Beacon";
1810                         print_dump = 1; /* dump frame contents */
1811                 } else if (ieee80211_is_atim(fc))
1812                         title = "ATIM";
1813                 else if (ieee80211_is_auth(fc))
1814                         title = "Auth";
1815                 else if (ieee80211_is_deauth(fc))
1816                         title = "DeAuth";
1817                 else if (ieee80211_is_disassoc(fc))
1818                         title = "DisAssoc";
1819                 else
1820                         title = "Frame";
1821
1822                 rate = iwl4965_rate_index_from_plcp(rate_sym);
1823                 if (rate == -1)
1824                         rate = 0;
1825                 else
1826                         rate = iwl4965_rates[rate].ieee / 2;
1827
1828                 /* print frame summary.
1829                  * MAC addresses show just the last byte (for brevity),
1830                  *    but you can hack it to show more, if you'd like to. */
1831                 if (dataframe)
1832                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1833                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1834                                      title, fc, header->addr1[5],
1835                                      length, rssi, channel, rate);
1836                 else {
1837                         /* src/dst addresses assume managed mode */
1838                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1839                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1840                                      "phy=0x%02x, chnl=%d\n",
1841                                      title, fc, header->addr1[5],
1842                                      header->addr3[5], rssi,
1843                                      tsf_low - priv->scan_start_tsf,
1844                                      phy_flags, channel);
1845                 }
1846         }
1847         if (print_dump)
1848                 iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1849 }
1850 #endif
1851
1852 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1853 {
1854         if (priv->hw_setting.shared_virt)
1855                 pci_free_consistent(priv->pci_dev,
1856                                     sizeof(struct iwl4965_shared),
1857                                     priv->hw_setting.shared_virt,
1858                                     priv->hw_setting.shared_phys);
1859 }
1860
1861 /**
1862  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1863  *
1864  * return : set the bit for each supported rate insert in ie
1865  */
1866 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1867                                     u16 basic_rate, int *left)
1868 {
1869         u16 ret_rates = 0, bit;
1870         int i;
1871         u8 *cnt = ie;
1872         u8 *rates = ie + 1;
1873
1874         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1875                 if (bit & supported_rate) {
1876                         ret_rates |= bit;
1877                         rates[*cnt] = iwl4965_rates[i].ieee |
1878                                 ((bit & basic_rate) ? 0x80 : 0x00);
1879                         (*cnt)++;
1880                         (*left)--;
1881                         if ((*left <= 0) ||
1882                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1883                                 break;
1884                 }
1885         }
1886
1887         return ret_rates;
1888 }
1889
1890 #ifdef CONFIG_IWL4965_HT
1891 void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1892                              struct ieee80211_ht_cap *ht_cap,
1893                              u8 use_current_config);
1894 #endif
1895
1896 /**
1897  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1898  */
1899 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1900                               struct ieee80211_mgmt *frame,
1901                               int left, int is_direct)
1902 {
1903         int len = 0;
1904         u8 *pos = NULL;
1905         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1906 #ifdef CONFIG_IWL4965_HT
1907         struct ieee80211_hw_mode *mode;
1908 #endif /* CONFIG_IWL4965_HT */
1909
1910         /* Make sure there is enough space for the probe request,
1911          * two mandatory IEs and the data */
1912         left -= 24;
1913         if (left < 0)
1914                 return 0;
1915         len += 24;
1916
1917         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1918         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1919         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1920         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1921         frame->seq_ctrl = 0;
1922
1923         /* fill in our indirect SSID IE */
1924         /* ...next IE... */
1925
1926         left -= 2;
1927         if (left < 0)
1928                 return 0;
1929         len += 2;
1930         pos = &(frame->u.probe_req.variable[0]);
1931         *pos++ = WLAN_EID_SSID;
1932         *pos++ = 0;
1933
1934         /* fill in our direct SSID IE... */
1935         if (is_direct) {
1936                 /* ...next IE... */
1937                 left -= 2 + priv->essid_len;
1938                 if (left < 0)
1939                         return 0;
1940                 /* ... fill it in... */
1941                 *pos++ = WLAN_EID_SSID;
1942                 *pos++ = priv->essid_len;
1943                 memcpy(pos, priv->essid, priv->essid_len);
1944                 pos += priv->essid_len;
1945                 len += 2 + priv->essid_len;
1946         }
1947
1948         /* fill in supported rate */
1949         /* ...next IE... */
1950         left -= 2;
1951         if (left < 0)
1952                 return 0;
1953
1954         /* ... fill it in... */
1955         *pos++ = WLAN_EID_SUPP_RATES;
1956         *pos = 0;
1957
1958         /* exclude 60M rate */
1959         active_rates = priv->rates_mask;
1960         active_rates &= ~IWL_RATE_60M_MASK;
1961
1962         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1963
1964         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1965         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1966                         active_rate_basic, &left);
1967         active_rates &= ~ret_rates;
1968
1969         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1970                                  active_rate_basic, &left);
1971         active_rates &= ~ret_rates;
1972
1973         len += 2 + *pos;
1974         pos += (*pos) + 1;
1975         if (active_rates == 0)
1976                 goto fill_end;
1977
1978         /* fill in supported extended rate */
1979         /* ...next IE... */
1980         left -= 2;
1981         if (left < 0)
1982                 return 0;
1983         /* ... fill it in... */
1984         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1985         *pos = 0;
1986         iwl4965_supported_rate_to_ie(pos, active_rates,
1987                                  active_rate_basic, &left);
1988         if (*pos > 0)
1989                 len += 2 + *pos;
1990
1991 #ifdef CONFIG_IWL4965_HT
1992         mode = priv->hw->conf.mode;
1993         if (mode->ht_info.ht_supported) {
1994                 pos += (*pos) + 1;
1995                 *pos++ = WLAN_EID_HT_CAPABILITY;
1996                 *pos++ = sizeof(struct ieee80211_ht_cap);
1997                 iwl4965_set_ht_capab(priv->hw,
1998                                 (struct ieee80211_ht_cap *)pos, 0);
1999                 len += 2 + sizeof(struct ieee80211_ht_cap);
2000         }
2001 #endif  /*CONFIG_IWL4965_HT */
2002
2003  fill_end:
2004         return (u16)len;
2005 }
2006
2007 /*
2008  * QoS  support
2009 */
2010 #ifdef CONFIG_IWL4965_QOS
2011 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
2012                                        struct iwl4965_qosparam_cmd *qos)
2013 {
2014
2015         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
2016                                 sizeof(struct iwl4965_qosparam_cmd), qos);
2017 }
2018
2019 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
2020 {
2021         u16 cw_min = 15;
2022         u16 cw_max = 1023;
2023         u8 aifs = 2;
2024         u8 is_legacy = 0;
2025         unsigned long flags;
2026         int i;
2027
2028         spin_lock_irqsave(&priv->lock, flags);
2029         priv->qos_data.qos_active = 0;
2030
2031         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
2032                 if (priv->qos_data.qos_enable)
2033                         priv->qos_data.qos_active = 1;
2034                 if (!(priv->active_rate & 0xfff0)) {
2035                         cw_min = 31;
2036                         is_legacy = 1;
2037                 }
2038         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2039                 if (priv->qos_data.qos_enable)
2040                         priv->qos_data.qos_active = 1;
2041         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
2042                 cw_min = 31;
2043                 is_legacy = 1;
2044         }
2045
2046         if (priv->qos_data.qos_active)
2047                 aifs = 3;
2048
2049         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
2050         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
2051         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
2052         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
2053         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
2054
2055         if (priv->qos_data.qos_active) {
2056                 i = 1;
2057                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
2058                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
2059                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
2060                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2061                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2062
2063                 i = 2;
2064                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2065                         cpu_to_le16((cw_min + 1) / 2 - 1);
2066                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2067                         cpu_to_le16(cw_max);
2068                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2069                 if (is_legacy)
2070                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2071                                 cpu_to_le16(6016);
2072                 else
2073                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2074                                 cpu_to_le16(3008);
2075                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2076
2077                 i = 3;
2078                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2079                         cpu_to_le16((cw_min + 1) / 4 - 1);
2080                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2081                         cpu_to_le16((cw_max + 1) / 2 - 1);
2082                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2083                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2084                 if (is_legacy)
2085                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2086                                 cpu_to_le16(3264);
2087                 else
2088                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2089                                 cpu_to_le16(1504);
2090         } else {
2091                 for (i = 1; i < 4; i++) {
2092                         priv->qos_data.def_qos_parm.ac[i].cw_min =
2093                                 cpu_to_le16(cw_min);
2094                         priv->qos_data.def_qos_parm.ac[i].cw_max =
2095                                 cpu_to_le16(cw_max);
2096                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2097                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2098                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2099                 }
2100         }
2101         IWL_DEBUG_QOS("set QoS to default \n");
2102
2103         spin_unlock_irqrestore(&priv->lock, flags);
2104 }
2105
2106 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2107 {
2108         unsigned long flags;
2109
2110         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2111                 return;
2112
2113         if (!priv->qos_data.qos_enable)
2114                 return;
2115
2116         spin_lock_irqsave(&priv->lock, flags);
2117         priv->qos_data.def_qos_parm.qos_flags = 0;
2118
2119         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2120             !priv->qos_data.qos_cap.q_AP.txop_request)
2121                 priv->qos_data.def_qos_parm.qos_flags |=
2122                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2123         if (priv->qos_data.qos_active)
2124                 priv->qos_data.def_qos_parm.qos_flags |=
2125                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2126
2127 #ifdef CONFIG_IWL4965_HT
2128         if (priv->current_ht_config.is_ht)
2129                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2130 #endif /* CONFIG_IWL4965_HT */
2131
2132         spin_unlock_irqrestore(&priv->lock, flags);
2133
2134         if (force || iwl4965_is_associated(priv)) {
2135                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2136                                 priv->qos_data.qos_active,
2137                                 priv->qos_data.def_qos_parm.qos_flags);
2138
2139                 iwl4965_send_qos_params_command(priv,
2140                                 &(priv->qos_data.def_qos_parm));
2141         }
2142 }
2143
2144 #endif /* CONFIG_IWL4965_QOS */
2145 /*
2146  * Power management (not Tx power!) functions
2147  */
2148 #define MSEC_TO_USEC 1024
2149
2150 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2151 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2152 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2153 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2154                                      __constant_cpu_to_le32(X1), \
2155                                      __constant_cpu_to_le32(X2), \
2156                                      __constant_cpu_to_le32(X3), \
2157                                      __constant_cpu_to_le32(X4)}
2158
2159
2160 /* default power management (not Tx power) table values */
2161 /* for tim  0-10 */
2162 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2163         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2164         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2165         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2166         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2167         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2168         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2169 };
2170
2171 /* for tim > 10 */
2172 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2173         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2174         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2175                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2176         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2177                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2178         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2179                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2180         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2181         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2182                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2183 };
2184
2185 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2186 {
2187         int rc = 0, i;
2188         struct iwl4965_power_mgr *pow_data;
2189         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2190         u16 pci_pm;
2191
2192         IWL_DEBUG_POWER("Initialize power \n");
2193
2194         pow_data = &(priv->power_data);
2195
2196         memset(pow_data, 0, sizeof(*pow_data));
2197
2198         pow_data->active_index = IWL_POWER_RANGE_0;
2199         pow_data->dtim_val = 0xffff;
2200
2201         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2202         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2203
2204         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2205         if (rc != 0)
2206                 return 0;
2207         else {
2208                 struct iwl4965_powertable_cmd *cmd;
2209
2210                 IWL_DEBUG_POWER("adjust power command flags\n");
2211
2212                 for (i = 0; i < IWL_POWER_AC; i++) {
2213                         cmd = &pow_data->pwr_range_0[i].cmd;
2214
2215                         if (pci_pm & 0x1)
2216                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2217                         else
2218                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2219                 }
2220         }
2221         return rc;
2222 }
2223
2224 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2225                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
2226 {
2227         int rc = 0, i;
2228         u8 skip;
2229         u32 max_sleep = 0;
2230         struct iwl4965_power_vec_entry *range;
2231         u8 period = 0;
2232         struct iwl4965_power_mgr *pow_data;
2233
2234         if (mode > IWL_POWER_INDEX_5) {
2235                 IWL_DEBUG_POWER("Error invalid power mode \n");
2236                 return -1;
2237         }
2238         pow_data = &(priv->power_data);
2239
2240         if (pow_data->active_index == IWL_POWER_RANGE_0)
2241                 range = &pow_data->pwr_range_0[0];
2242         else
2243                 range = &pow_data->pwr_range_1[1];
2244
2245         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2246
2247 #ifdef IWL_MAC80211_DISABLE
2248         if (priv->assoc_network != NULL) {
2249                 unsigned long flags;
2250
2251                 period = priv->assoc_network->tim.tim_period;
2252         }
2253 #endif  /*IWL_MAC80211_DISABLE */
2254         skip = range[mode].no_dtim;
2255
2256         if (period == 0) {
2257                 period = 1;
2258                 skip = 0;
2259         }
2260
2261         if (skip == 0) {
2262                 max_sleep = period;
2263                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2264         } else {
2265                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2266                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2267                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2268         }
2269
2270         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2271                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2272                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2273         }
2274
2275         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2276         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2277         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2278         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2279                         le32_to_cpu(cmd->sleep_interval[0]),
2280                         le32_to_cpu(cmd->sleep_interval[1]),
2281                         le32_to_cpu(cmd->sleep_interval[2]),
2282                         le32_to_cpu(cmd->sleep_interval[3]),
2283                         le32_to_cpu(cmd->sleep_interval[4]));
2284
2285         return rc;
2286 }
2287
2288 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2289 {
2290         u32 uninitialized_var(final_mode);
2291         int rc;
2292         struct iwl4965_powertable_cmd cmd;
2293
2294         /* If on battery, set to 3,
2295          * if plugged into AC power, set to CAM ("continuously aware mode"),
2296          * else user level */
2297         switch (mode) {
2298         case IWL_POWER_BATTERY:
2299                 final_mode = IWL_POWER_INDEX_3;
2300                 break;
2301         case IWL_POWER_AC:
2302                 final_mode = IWL_POWER_MODE_CAM;
2303                 break;
2304         default:
2305                 final_mode = mode;
2306                 break;
2307         }
2308
2309         cmd.keep_alive_beacons = 0;
2310
2311         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2312
2313         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2314
2315         if (final_mode == IWL_POWER_MODE_CAM)
2316                 clear_bit(STATUS_POWER_PMI, &priv->status);
2317         else
2318                 set_bit(STATUS_POWER_PMI, &priv->status);
2319
2320         return rc;
2321 }
2322
2323 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2324 {
2325         /* Filter incoming packets to determine if they are targeted toward
2326          * this network, discarding packets coming from ourselves */
2327         switch (priv->iw_mode) {
2328         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2329                 /* packets from our adapter are dropped (echo) */
2330                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2331                         return 0;
2332                 /* {broad,multi}cast packets to our IBSS go through */
2333                 if (is_multicast_ether_addr(header->addr1))
2334                         return !compare_ether_addr(header->addr3, priv->bssid);
2335                 /* packets to our adapter go through */
2336                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2337         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2338                 /* packets from our adapter are dropped (echo) */
2339                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2340                         return 0;
2341                 /* {broad,multi}cast packets to our BSS go through */
2342                 if (is_multicast_ether_addr(header->addr1))
2343                         return !compare_ether_addr(header->addr2, priv->bssid);
2344                 /* packets to our adapter go through */
2345                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2346         }
2347
2348         return 1;
2349 }
2350
2351 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2352
2353 static const char *iwl4965_get_tx_fail_reason(u32 status)
2354 {
2355         switch (status & TX_STATUS_MSK) {
2356         case TX_STATUS_SUCCESS:
2357                 return "SUCCESS";
2358                 TX_STATUS_ENTRY(SHORT_LIMIT);
2359                 TX_STATUS_ENTRY(LONG_LIMIT);
2360                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2361                 TX_STATUS_ENTRY(MGMNT_ABORT);
2362                 TX_STATUS_ENTRY(NEXT_FRAG);
2363                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2364                 TX_STATUS_ENTRY(DEST_PS);
2365                 TX_STATUS_ENTRY(ABORTED);
2366                 TX_STATUS_ENTRY(BT_RETRY);
2367                 TX_STATUS_ENTRY(STA_INVALID);
2368                 TX_STATUS_ENTRY(FRAG_DROPPED);
2369                 TX_STATUS_ENTRY(TID_DISABLE);
2370                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2371                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2372                 TX_STATUS_ENTRY(TX_LOCKED);
2373                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2374         }
2375
2376         return "UNKNOWN";
2377 }
2378
2379 /**
2380  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2381  *
2382  * NOTE: priv->mutex is not required before calling this function
2383  */
2384 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2385 {
2386         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2387                 clear_bit(STATUS_SCANNING, &priv->status);
2388                 return 0;
2389         }
2390
2391         if (test_bit(STATUS_SCANNING, &priv->status)) {
2392                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2393                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2394                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2395                         queue_work(priv->workqueue, &priv->abort_scan);
2396
2397                 } else
2398                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2399
2400                 return test_bit(STATUS_SCANNING, &priv->status);
2401         }
2402
2403         return 0;
2404 }
2405
2406 /**
2407  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2408  * @ms: amount of time to wait (in milliseconds) for scan to abort
2409  *
2410  * NOTE: priv->mutex must be held before calling this function
2411  */
2412 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2413 {
2414         unsigned long now = jiffies;
2415         int ret;
2416
2417         ret = iwl4965_scan_cancel(priv);
2418         if (ret && ms) {
2419                 mutex_unlock(&priv->mutex);
2420                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2421                                 test_bit(STATUS_SCANNING, &priv->status))
2422                         msleep(1);
2423                 mutex_lock(&priv->mutex);
2424
2425                 return test_bit(STATUS_SCANNING, &priv->status);
2426         }
2427
2428         return ret;
2429 }
2430
2431 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2432 {
2433         /* Reset ieee stats */
2434
2435         /* We don't reset the net_device_stats (ieee->stats) on
2436          * re-association */
2437
2438         priv->last_seq_num = -1;
2439         priv->last_frag_num = -1;
2440         priv->last_packet_time = 0;
2441
2442         iwl4965_scan_cancel(priv);
2443 }
2444
2445 #define MAX_UCODE_BEACON_INTERVAL       4096
2446 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2447
2448 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2449 {
2450         u16 new_val = 0;
2451         u16 beacon_factor = 0;
2452
2453         beacon_factor =
2454             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2455                 / MAX_UCODE_BEACON_INTERVAL;
2456         new_val = beacon_val / beacon_factor;
2457
2458         return cpu_to_le16(new_val);
2459 }
2460
2461 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2462 {
2463         u64 interval_tm_unit;
2464         u64 tsf, result;
2465         unsigned long flags;
2466         struct ieee80211_conf *conf = NULL;
2467         u16 beacon_int = 0;
2468
2469         conf = ieee80211_get_hw_conf(priv->hw);
2470
2471         spin_lock_irqsave(&priv->lock, flags);
2472         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2473         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2474
2475         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2476
2477         tsf = priv->timestamp1;
2478         tsf = ((tsf << 32) | priv->timestamp0);
2479
2480         beacon_int = priv->beacon_int;
2481         spin_unlock_irqrestore(&priv->lock, flags);
2482
2483         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2484                 if (beacon_int == 0) {
2485                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2486                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2487                 } else {
2488                         priv->rxon_timing.beacon_interval =
2489                                 cpu_to_le16(beacon_int);
2490                         priv->rxon_timing.beacon_interval =
2491                             iwl4965_adjust_beacon_interval(
2492                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2493                 }
2494
2495                 priv->rxon_timing.atim_window = 0;
2496         } else {
2497                 priv->rxon_timing.beacon_interval =
2498                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2499                 /* TODO: we need to get atim_window from upper stack
2500                  * for now we set to 0 */
2501                 priv->rxon_timing.atim_window = 0;
2502         }
2503
2504         interval_tm_unit =
2505                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2506         result = do_div(tsf, interval_tm_unit);
2507         priv->rxon_timing.beacon_init_val =
2508             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2509
2510         IWL_DEBUG_ASSOC
2511             ("beacon interval %d beacon timer %d beacon tim %d\n",
2512                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2513                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2514                 le16_to_cpu(priv->rxon_timing.atim_window));
2515 }
2516
2517 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2518 {
2519         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2520                 IWL_ERROR("APs don't scan.\n");
2521                 return 0;
2522         }
2523
2524         if (!iwl4965_is_ready_rf(priv)) {
2525                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2526                 return -EIO;
2527         }
2528
2529         if (test_bit(STATUS_SCANNING, &priv->status)) {
2530                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2531                 return -EAGAIN;
2532         }
2533
2534         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2535                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2536                                "Queuing.\n");
2537                 return -EAGAIN;
2538         }
2539
2540         IWL_DEBUG_INFO("Starting scan...\n");
2541         priv->scan_bands = 2;
2542         set_bit(STATUS_SCANNING, &priv->status);
2543         priv->scan_start = jiffies;
2544         priv->scan_pass_start = priv->scan_start;
2545
2546         queue_work(priv->workqueue, &priv->request_scan);
2547
2548         return 0;
2549 }
2550
2551 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2552 {
2553         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2554
2555         if (hw_decrypt)
2556                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2557         else
2558                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2559
2560         return 0;
2561 }
2562
2563 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2564 {
2565         if (phymode == MODE_IEEE80211A) {
2566                 priv->staging_rxon.flags &=
2567                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2568                       | RXON_FLG_CCK_MSK);
2569                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2570         } else {
2571                 /* Copied from iwl4965_bg_post_associate() */
2572                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2573                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2574                 else
2575                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2576
2577                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2578                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2579
2580                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2581                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2582                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2583         }
2584 }
2585
2586 /*
2587  * initialize rxon structure with default values from eeprom
2588  */
2589 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2590 {
2591         const struct iwl4965_channel_info *ch_info;
2592
2593         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2594
2595         switch (priv->iw_mode) {
2596         case IEEE80211_IF_TYPE_AP:
2597                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2598                 break;
2599
2600         case IEEE80211_IF_TYPE_STA:
2601                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2602                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2603                 break;
2604
2605         case IEEE80211_IF_TYPE_IBSS:
2606                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2607                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2608                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2609                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2610                 break;
2611
2612         case IEEE80211_IF_TYPE_MNTR:
2613                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2614                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2615                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2616                 break;
2617         }
2618
2619 #if 0
2620         /* TODO:  Figure out when short_preamble would be set and cache from
2621          * that */
2622         if (!hw_to_local(priv->hw)->short_preamble)
2623                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2624         else
2625                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2626 #endif
2627
2628         ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2629                                        le16_to_cpu(priv->staging_rxon.channel));
2630
2631         if (!ch_info)
2632                 ch_info = &priv->channel_info[0];
2633
2634         /*
2635          * in some case A channels are all non IBSS
2636          * in this case force B/G channel
2637          */
2638         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2639             !(is_channel_ibss(ch_info)))
2640                 ch_info = &priv->channel_info[0];
2641
2642         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2643         if (is_channel_a_band(ch_info))
2644                 priv->phymode = MODE_IEEE80211A;
2645         else
2646                 priv->phymode = MODE_IEEE80211G;
2647
2648         iwl4965_set_flags_for_phymode(priv, priv->phymode);
2649
2650         priv->staging_rxon.ofdm_basic_rates =
2651             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2652         priv->staging_rxon.cck_basic_rates =
2653             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2654
2655         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2656                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2657         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2658         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2659         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2660         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2661         iwl4965_set_rxon_chain(priv);
2662 }
2663
2664 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2665 {
2666         if (mode == IEEE80211_IF_TYPE_IBSS) {
2667                 const struct iwl4965_channel_info *ch_info;
2668
2669                 ch_info = iwl4965_get_channel_info(priv,
2670                         priv->phymode,
2671                         le16_to_cpu(priv->staging_rxon.channel));
2672
2673                 if (!ch_info || !is_channel_ibss(ch_info)) {
2674                         IWL_ERROR("channel %d not IBSS channel\n",
2675                                   le16_to_cpu(priv->staging_rxon.channel));
2676                         return -EINVAL;
2677                 }
2678         }
2679
2680         priv->iw_mode = mode;
2681
2682         iwl4965_connection_init_rx_config(priv);
2683         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2684
2685         iwl4965_clear_stations_table(priv);
2686
2687         /* dont commit rxon if rf-kill is on*/
2688         if (!iwl4965_is_ready_rf(priv))
2689                 return -EAGAIN;
2690
2691         cancel_delayed_work(&priv->scan_check);
2692         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2693                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2694                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2695                 return -EAGAIN;
2696         }
2697
2698         iwl4965_commit_rxon(priv);
2699
2700         return 0;
2701 }
2702
2703 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2704                                       struct ieee80211_tx_control *ctl,
2705                                       struct iwl4965_cmd *cmd,
2706                                       struct sk_buff *skb_frag,
2707                                       int last_frag)
2708 {
2709         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2710
2711         switch (keyinfo->alg) {
2712         case ALG_CCMP:
2713                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2714                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2715                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2716                 break;
2717
2718         case ALG_TKIP:
2719 #if 0
2720                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2721
2722                 if (last_frag)
2723                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2724                                8);
2725                 else
2726                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2727 #endif
2728                 break;
2729
2730         case ALG_WEP:
2731                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2732                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2733
2734                 if (keyinfo->keylen == 13)
2735                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2736
2737                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2738
2739                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2740                              "with key %d\n", ctl->key_idx);
2741                 break;
2742
2743         default:
2744                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2745                 break;
2746         }
2747 }
2748
2749 /*
2750  * handle build REPLY_TX command notification.
2751  */
2752 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2753                                   struct iwl4965_cmd *cmd,
2754                                   struct ieee80211_tx_control *ctrl,
2755                                   struct ieee80211_hdr *hdr,
2756                                   int is_unicast, u8 std_id)
2757 {
2758         __le16 *qc;
2759         u16 fc = le16_to_cpu(hdr->frame_control);
2760         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2761
2762         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2763         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2764                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2765                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2766                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2767                 if (ieee80211_is_probe_response(fc) &&
2768                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2769                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2770         } else {
2771                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2772                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2773         }
2774
2775         cmd->cmd.tx.sta_id = std_id;
2776         if (ieee80211_get_morefrag(hdr))
2777                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2778
2779         qc = ieee80211_get_qos_ctrl(hdr);
2780         if (qc) {
2781                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2782                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2783         } else
2784                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2785
2786         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2787                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2788                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2789         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2790                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2791                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2792         }
2793
2794         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2795                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2796
2797         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2798         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2799                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2800                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2801                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2802                 else
2803                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2804         } else
2805                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2806
2807         cmd->cmd.tx.driver_txop = 0;
2808         cmd->cmd.tx.tx_flags = tx_flags;
2809         cmd->cmd.tx.next_frame_len = 0;
2810 }
2811
2812 /**
2813  * iwl4965_get_sta_id - Find station's index within station table
2814  *
2815  * If new IBSS station, create new entry in station table
2816  */
2817 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2818                                 struct ieee80211_hdr *hdr)
2819 {
2820         int sta_id;
2821         u16 fc = le16_to_cpu(hdr->frame_control);
2822         DECLARE_MAC_BUF(mac);
2823
2824         /* If this frame is broadcast or management, use broadcast station id */
2825         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2826             is_multicast_ether_addr(hdr->addr1))
2827                 return priv->hw_setting.bcast_sta_id;
2828
2829         switch (priv->iw_mode) {
2830
2831         /* If we are a client station in a BSS network, use the special
2832          * AP station entry (that's the only station we communicate with) */
2833         case IEEE80211_IF_TYPE_STA:
2834                 return IWL_AP_ID;
2835
2836         /* If we are an AP, then find the station, or use BCAST */
2837         case IEEE80211_IF_TYPE_AP:
2838                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2839                 if (sta_id != IWL_INVALID_STATION)
2840                         return sta_id;
2841                 return priv->hw_setting.bcast_sta_id;
2842
2843         /* If this frame is going out to an IBSS network, find the station,
2844          * or create a new station table entry */
2845         case IEEE80211_IF_TYPE_IBSS:
2846                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2847                 if (sta_id != IWL_INVALID_STATION)
2848                         return sta_id;
2849
2850                 /* Create new station table entry */
2851                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2852                                                    0, CMD_ASYNC, NULL);
2853
2854                 if (sta_id != IWL_INVALID_STATION)
2855                         return sta_id;
2856
2857                 IWL_DEBUG_DROP("Station %s not in station map. "
2858                                "Defaulting to broadcast...\n",
2859                                print_mac(mac, hdr->addr1));
2860                 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2861                 return priv->hw_setting.bcast_sta_id;
2862
2863         default:
2864                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2865                 return priv->hw_setting.bcast_sta_id;
2866         }
2867 }
2868
2869 /*
2870  * start REPLY_TX command process
2871  */
2872 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2873                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2874 {
2875         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2876         struct iwl4965_tfd_frame *tfd;
2877         u32 *control_flags;
2878         int txq_id = ctl->queue;
2879         struct iwl4965_tx_queue *txq = NULL;
2880         struct iwl4965_queue *q = NULL;
2881         dma_addr_t phys_addr;
2882         dma_addr_t txcmd_phys;
2883         struct iwl4965_cmd *out_cmd = NULL;
2884         u16 len, idx, len_org;
2885         u8 id, hdr_len, unicast;
2886         u8 sta_id;
2887         u16 seq_number = 0;
2888         u16 fc;
2889         __le16 *qc;
2890         u8 wait_write_ptr = 0;
2891         unsigned long flags;
2892         int rc;
2893
2894         spin_lock_irqsave(&priv->lock, flags);
2895         if (iwl4965_is_rfkill(priv)) {
2896                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2897                 goto drop_unlock;
2898         }
2899
2900         if (!priv->interface_id) {
2901                 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2902                 goto drop_unlock;
2903         }
2904
2905         if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2906                 IWL_ERROR("ERROR: No TX rate available.\n");
2907                 goto drop_unlock;
2908         }
2909
2910         unicast = !is_multicast_ether_addr(hdr->addr1);
2911         id = 0;
2912
2913         fc = le16_to_cpu(hdr->frame_control);
2914
2915 #ifdef CONFIG_IWL4965_DEBUG
2916         if (ieee80211_is_auth(fc))
2917                 IWL_DEBUG_TX("Sending AUTH frame\n");
2918         else if (ieee80211_is_assoc_request(fc))
2919                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2920         else if (ieee80211_is_reassoc_request(fc))
2921                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2922 #endif
2923
2924         /* drop all data frame if we are not associated */
2925         if (!iwl4965_is_associated(priv) && !priv->assoc_id &&
2926             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2927                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2928                 goto drop_unlock;
2929         }
2930
2931         spin_unlock_irqrestore(&priv->lock, flags);
2932
2933         hdr_len = ieee80211_get_hdrlen(fc);
2934
2935         /* Find (or create) index into station table for destination station */
2936         sta_id = iwl4965_get_sta_id(priv, hdr);
2937         if (sta_id == IWL_INVALID_STATION) {
2938                 DECLARE_MAC_BUF(mac);
2939
2940                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2941                                print_mac(mac, hdr->addr1));
2942                 goto drop;
2943         }
2944
2945         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2946
2947         qc = ieee80211_get_qos_ctrl(hdr);
2948         if (qc) {
2949                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2950                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2951                                 IEEE80211_SCTL_SEQ;
2952                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2953                         (hdr->seq_ctrl &
2954                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2955                 seq_number += 0x10;
2956 #ifdef CONFIG_IWL4965_HT
2957 #ifdef CONFIG_IWL4965_HT_AGG
2958                 /* aggregation is on for this <sta,tid> */
2959                 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2960                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2961 #endif /* CONFIG_IWL4965_HT_AGG */
2962 #endif /* CONFIG_IWL4965_HT */
2963         }
2964
2965         /* Descriptor for chosen Tx queue */
2966         txq = &priv->txq[txq_id];
2967         q = &txq->q;
2968
2969         spin_lock_irqsave(&priv->lock, flags);
2970
2971         /* Set up first empty TFD within this queue's circular TFD buffer */
2972         tfd = &txq->bd[q->write_ptr];
2973         memset(tfd, 0, sizeof(*tfd));
2974         control_flags = (u32 *) tfd;
2975         idx = get_cmd_index(q, q->write_ptr, 0);
2976
2977         /* Set up driver data for this TFD */
2978         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2979         txq->txb[q->write_ptr].skb[0] = skb;
2980         memcpy(&(txq->txb[q->write_ptr].status.control),
2981                ctl, sizeof(struct ieee80211_tx_control));
2982
2983         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2984         out_cmd = &txq->cmd[idx];
2985         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2986         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2987
2988         /*
2989          * Set up the Tx-command (not MAC!) header.
2990          * Store the chosen Tx queue and TFD index within the sequence field;
2991          * after Tx, uCode's Tx response will return this value so driver can
2992          * locate the frame within the tx queue and do post-tx processing.
2993          */
2994         out_cmd->hdr.cmd = REPLY_TX;
2995         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2996                                 INDEX_TO_SEQ(q->write_ptr)));
2997
2998         /* Copy MAC header from skb into command buffer */
2999         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
3000
3001         /*
3002          * Use the first empty entry in this queue's command buffer array
3003          * to contain the Tx command and MAC header concatenated together
3004          * (payload data will be in another buffer).
3005          * Size of this varies, due to varying MAC header length.
3006          * If end is not dword aligned, we'll have 2 extra bytes at the end
3007          * of the MAC header (device reads on dword boundaries).
3008          * We'll tell device about this padding later.
3009          */
3010         len = priv->hw_setting.tx_cmd_len +
3011                 sizeof(struct iwl4965_cmd_header) + hdr_len;
3012
3013         len_org = len;
3014         len = (len + 3) & ~3;
3015
3016         if (len_org != len)
3017                 len_org = 1;
3018         else
3019                 len_org = 0;
3020
3021         /* Physical address of this Tx command's header (not MAC header!),
3022          * within command buffer array. */
3023         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3024                      offsetof(struct iwl4965_cmd, hdr);
3025
3026         /* Add buffer containing Tx command and MAC(!) header to TFD's
3027          * first entry */
3028         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3029
3030         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
3031                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3032
3033         /* Set up TFD's 2nd entry to point directly to remainder of skb,
3034          * if any (802.11 null frames have no payload). */
3035         len = skb->len - hdr_len;
3036         if (len) {
3037                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3038                                            len, PCI_DMA_TODEVICE);
3039                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3040         }
3041
3042         /* Tell 4965 about any 2-byte padding after MAC header */
3043         if (len_org)
3044                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3045
3046         /* Total # bytes to be transmitted */
3047         len = (u16)skb->len;
3048         out_cmd->cmd.tx.len = cpu_to_le16(len);
3049
3050         /* TODO need this for burst mode later on */
3051         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3052
3053         /* set is_hcca to 0; it probably will never be implemented */
3054         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3055
3056         iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
3057                        hdr, hdr_len, ctl, NULL);
3058
3059         if (!ieee80211_get_morefrag(hdr)) {
3060                 txq->need_update = 1;
3061                 if (qc) {
3062                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3063                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
3064                 }
3065         } else {
3066                 wait_write_ptr = 1;
3067                 txq->need_update = 0;
3068         }
3069
3070         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3071                            sizeof(out_cmd->cmd.tx));
3072
3073         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3074                            ieee80211_get_hdrlen(fc));
3075
3076         /* Set up entry for this TFD in Tx byte-count array */
3077         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3078
3079         /* Tell device the write index *just past* this latest filled TFD */
3080         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3081         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3082         spin_unlock_irqrestore(&priv->lock, flags);
3083
3084         if (rc)
3085                 return rc;
3086
3087         if ((iwl4965_queue_space(q) < q->high_mark)
3088             && priv->mac80211_registered) {
3089                 if (wait_write_ptr) {
3090                         spin_lock_irqsave(&priv->lock, flags);
3091                         txq->need_update = 1;
3092                         iwl4965_tx_queue_update_write_ptr(priv, txq);
3093                         spin_unlock_irqrestore(&priv->lock, flags);
3094                 }
3095
3096                 ieee80211_stop_queue(priv->hw, ctl->queue);
3097         }
3098
3099         return 0;
3100
3101 drop_unlock:
3102         spin_unlock_irqrestore(&priv->lock, flags);
3103 drop:
3104         return -1;
3105 }
3106
3107 static void iwl4965_set_rate(struct iwl4965_priv *priv)
3108 {
3109         const struct ieee80211_hw_mode *hw = NULL;
3110         struct ieee80211_rate *rate;
3111         int i;
3112
3113         hw = iwl4965_get_hw_mode(priv, priv->phymode);
3114         if (!hw) {
3115                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3116                 return;
3117         }
3118
3119         priv->active_rate = 0;
3120         priv->active_rate_basic = 0;
3121
3122         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3123                        hw->mode == MODE_IEEE80211A ?
3124                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3125
3126         for (i = 0; i < hw->num_rates; i++) {
3127                 rate = &(hw->rates[i]);
3128                 if ((rate->val < IWL_RATE_COUNT) &&
3129                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3130                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3131                                        rate->val, iwl4965_rates[rate->val].plcp,
3132                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3133                                        "*" : "");
3134                         priv->active_rate |= (1 << rate->val);
3135                         if (rate->flags & IEEE80211_RATE_BASIC)
3136                                 priv->active_rate_basic |= (1 << rate->val);
3137                 } else
3138                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3139                                        rate->val, iwl4965_rates[rate->val].plcp);
3140         }
3141
3142         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3143                        priv->active_rate, priv->active_rate_basic);
3144
3145         /*
3146          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3147          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3148          * OFDM
3149          */
3150         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3151                 priv->staging_rxon.cck_basic_rates =
3152                     ((priv->active_rate_basic &
3153                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3154         else
3155                 priv->staging_rxon.cck_basic_rates =
3156                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3157
3158         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3159                 priv->staging_rxon.ofdm_basic_rates =
3160                     ((priv->active_rate_basic &
3161                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3162                       IWL_FIRST_OFDM_RATE) & 0xFF;
3163         else
3164                 priv->staging_rxon.ofdm_basic_rates =
3165                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3166 }
3167
3168 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3169 {
3170         unsigned long flags;
3171
3172         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3173                 return;
3174
3175         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3176                           disable_radio ? "OFF" : "ON");
3177
3178         if (disable_radio) {
3179                 iwl4965_scan_cancel(priv);
3180                 /* FIXME: This is a workaround for AP */
3181                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3182                         spin_lock_irqsave(&priv->lock, flags);
3183                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3184                                     CSR_UCODE_SW_BIT_RFKILL);
3185                         spin_unlock_irqrestore(&priv->lock, flags);
3186                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3187                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3188                 }
3189                 return;
3190         }
3191
3192         spin_lock_irqsave(&priv->lock, flags);
3193         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3194
3195         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3196         spin_unlock_irqrestore(&priv->lock, flags);
3197
3198         /* wake up ucode */
3199         msleep(10);
3200
3201         spin_lock_irqsave(&priv->lock, flags);
3202         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3203         if (!iwl4965_grab_nic_access(priv))
3204                 iwl4965_release_nic_access(priv);
3205         spin_unlock_irqrestore(&priv->lock, flags);
3206
3207         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3208                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3209                                   "disabled by HW switch\n");
3210                 return;
3211         }
3212
3213         queue_work(priv->workqueue, &priv->restart);
3214         return;
3215 }
3216
3217 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3218                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3219 {
3220         u16 fc =
3221             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3222
3223         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3224                 return;
3225
3226         if (!(fc & IEEE80211_FCTL_PROTECTED))
3227                 return;
3228
3229         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3230         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3231         case RX_RES_STATUS_SEC_TYPE_TKIP:
3232                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3233                     RX_RES_STATUS_BAD_ICV_MIC)
3234                         stats->flag |= RX_FLAG_MMIC_ERROR;
3235         case RX_RES_STATUS_SEC_TYPE_WEP:
3236         case RX_RES_STATUS_SEC_TYPE_CCMP:
3237                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3238                     RX_RES_STATUS_DECRYPT_OK) {
3239                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3240                         stats->flag |= RX_FLAG_DECRYPTED;
3241                 }
3242                 break;
3243
3244         default:
3245                 break;
3246         }
3247 }
3248
3249
3250 #define IWL_PACKET_RETRY_TIME HZ
3251
3252 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3253 {
3254         u16 sc = le16_to_cpu(header->seq_ctrl);
3255         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3256         u16 frag = sc & IEEE80211_SCTL_FRAG;
3257         u16 *last_seq, *last_frag;
3258         unsigned long *last_time;
3259
3260         switch (priv->iw_mode) {
3261         case IEEE80211_IF_TYPE_IBSS:{
3262                 struct list_head *p;
3263                 struct iwl4965_ibss_seq *entry = NULL;
3264                 u8 *mac = header->addr2;
3265                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3266
3267                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3268                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
3269                         if (!compare_ether_addr(entry->mac, mac))
3270                                 break;
3271                 }
3272                 if (p == &priv->ibss_mac_hash[index]) {
3273                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3274                         if (!entry) {
3275                                 IWL_ERROR("Cannot malloc new mac entry\n");
3276                                 return 0;
3277                         }
3278                         memcpy(entry->mac, mac, ETH_ALEN);
3279                         entry->seq_num = seq;
3280                         entry->frag_num = frag;
3281                         entry->packet_time = jiffies;
3282                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3283                         return 0;
3284                 }
3285                 last_seq = &entry->seq_num;
3286                 last_frag = &entry->frag_num;
3287                 last_time = &entry->packet_time;
3288                 break;
3289         }
3290         case IEEE80211_IF_TYPE_STA:
3291                 last_seq = &priv->last_seq_num;
3292                 last_frag = &priv->last_frag_num;
3293                 last_time = &priv->last_packet_time;
3294                 break;
3295         default:
3296                 return 0;
3297         }
3298         if ((*last_seq == seq) &&
3299             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3300                 if (*last_frag == frag)
3301                         goto drop;
3302                 if (*last_frag + 1 != frag)
3303                         /* out-of-order fragment */
3304                         goto drop;
3305         } else
3306                 *last_seq = seq;
3307
3308         *last_frag = frag;
3309         *last_time = jiffies;
3310         return 0;
3311
3312  drop:
3313         return 1;
3314 }
3315
3316 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3317
3318 #include "iwl-spectrum.h"
3319
3320 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3321 #define BEACON_TIME_MASK_HIGH   0xFF000000
3322 #define TIME_UNIT               1024
3323
3324 /*
3325  * extended beacon time format
3326  * time in usec will be changed into a 32-bit value in 8:24 format
3327  * the high 1 byte is the beacon counts
3328  * the lower 3 bytes is the time in usec within one beacon interval
3329  */
3330
3331 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3332 {
3333         u32 quot;
3334         u32 rem;
3335         u32 interval = beacon_interval * 1024;
3336
3337         if (!interval || !usec)
3338                 return 0;
3339
3340         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3341         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3342
3343         return (quot << 24) + rem;
3344 }
3345
3346 /* base is usually what we get from ucode with each received frame,
3347  * the same as HW timer counter counting down
3348  */
3349
3350 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3351 {
3352         u32 base_low = base & BEACON_TIME_MASK_LOW;
3353         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3354         u32 interval = beacon_interval * TIME_UNIT;
3355         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3356             (addon & BEACON_TIME_MASK_HIGH);
3357
3358         if (base_low > addon_low)
3359                 res += base_low - addon_low;
3360         else if (base_low < addon_low) {
3361                 res += interval + base_low - addon_low;
3362                 res += (1 << 24);
3363         } else
3364                 res += (1 << 24);
3365
3366         return cpu_to_le32(res);
3367 }
3368
3369 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3370                                struct ieee80211_measurement_params *params,
3371                                u8 type)
3372 {
3373         struct iwl4965_spectrum_cmd spectrum;
3374         struct iwl4965_rx_packet *res;
3375         struct iwl4965_host_cmd cmd = {
3376                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3377                 .data = (void *)&spectrum,
3378                 .meta.flags = CMD_WANT_SKB,
3379         };
3380         u32 add_time = le64_to_cpu(params->start_time);
3381         int rc;
3382         int spectrum_resp_status;
3383         int duration = le16_to_cpu(params->duration);
3384
3385         if (iwl4965_is_associated(priv))
3386                 add_time =
3387                     iwl4965_usecs_to_beacons(
3388                         le64_to_cpu(params->start_time) - priv->last_tsf,
3389                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3390
3391         memset(&spectrum, 0, sizeof(spectrum));
3392
3393         spectrum.channel_count = cpu_to_le16(1);
3394         spectrum.flags =
3395             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3396         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3397         cmd.len = sizeof(spectrum);
3398         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3399
3400         if (iwl4965_is_associated(priv))
3401                 spectrum.start_time =
3402                     iwl4965_add_beacon_time(priv->last_beacon_time,
3403                                 add_time,
3404                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3405         else
3406                 spectrum.start_time = 0;
3407
3408         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3409         spectrum.channels[0].channel = params->channel;
3410         spectrum.channels[0].type = type;
3411         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3412                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3413                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3414
3415         rc = iwl4965_send_cmd_sync(priv, &cmd);
3416         if (rc)
3417                 return rc;
3418
3419         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3420         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3421                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3422                 rc = -EIO;
3423         }
3424
3425         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3426         switch (spectrum_resp_status) {
3427         case 0:         /* Command will be handled */
3428                 if (res->u.spectrum.id != 0xff) {
3429                         IWL_DEBUG_INFO
3430                             ("Replaced existing measurement: %d\n",
3431                              res->u.spectrum.id);
3432                         priv->measurement_status &= ~MEASUREMENT_READY;
3433                 }
3434                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3435                 rc = 0;
3436                 break;
3437
3438         case 1:         /* Command will not be handled */
3439                 rc = -EAGAIN;
3440                 break;
3441         }
3442
3443         dev_kfree_skb_any(cmd.meta.u.skb);
3444
3445         return rc;
3446 }
3447 #endif
3448
3449 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3450                                  struct iwl4965_tx_info *tx_sta)
3451 {
3452
3453         tx_sta->status.ack_signal = 0;
3454         tx_sta->status.excessive_retries = 0;
3455         tx_sta->status.queue_length = 0;
3456         tx_sta->status.queue_number = 0;
3457
3458         if (in_interrupt())
3459                 ieee80211_tx_status_irqsafe(priv->hw,
3460                                             tx_sta->skb[0], &(tx_sta->status));
3461         else
3462                 ieee80211_tx_status(priv->hw,
3463                                     tx_sta->skb[0], &(tx_sta->status));
3464
3465         tx_sta->skb[0] = NULL;
3466 }
3467
3468 /**
3469  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3470  *
3471  * When FW advances 'R' index, all entries between old and new 'R' index
3472  * need to be reclaimed. As result, some free space forms.  If there is
3473  * enough free space (> low mark), wake the stack that feeds us.
3474  */
3475 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3476 {
3477         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3478         struct iwl4965_queue *q = &txq->q;
3479         int nfreed = 0;
3480
3481         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3482                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3483                           "is out of range [0-%d] %d %d.\n", txq_id,
3484                           index, q->n_bd, q->write_ptr, q->read_ptr);
3485                 return 0;
3486         }
3487
3488         for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3489                 q->read_ptr != index;
3490                 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3491                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3492                         iwl4965_txstatus_to_ieee(priv,
3493                                         &(txq->txb[txq->q.read_ptr]));
3494                         iwl4965_hw_txq_free_tfd(priv, txq);
3495                 } else if (nfreed > 1) {
3496                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3497                                         q->write_ptr, q->read_ptr);
3498                         queue_work(priv->workqueue, &priv->restart);
3499                 }
3500                 nfreed++;
3501         }
3502
3503         if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3504                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3505                         priv->mac80211_registered)
3506                 ieee80211_wake_queue(priv->hw, txq_id);
3507
3508
3509         return nfreed;
3510 }
3511
3512 static int iwl4965_is_tx_success(u32 status)
3513 {
3514         status &= TX_STATUS_MSK;
3515         return (status == TX_STATUS_SUCCESS)
3516             || (status == TX_STATUS_DIRECT_DONE);
3517 }
3518
3519 /******************************************************************************
3520  *
3521  * Generic RX handler implementations
3522  *
3523  ******************************************************************************/
3524 #ifdef CONFIG_IWL4965_HT
3525 #ifdef CONFIG_IWL4965_HT_AGG
3526
3527 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3528                                     struct ieee80211_hdr *hdr)
3529 {
3530         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3531                 return IWL_AP_ID;
3532         else {
3533                 u8 *da = ieee80211_get_DA(hdr);
3534                 return iwl4965_hw_find_station(priv, da);
3535         }
3536 }
3537
3538 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3539         struct iwl4965_priv *priv, int txq_id, int idx)
3540 {
3541         if (priv->txq[txq_id].txb[idx].skb[0])
3542                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3543                                 txb[idx].skb[0]->data;
3544         return NULL;
3545 }
3546
3547 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3548 {
3549         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3550                                 tx_resp->frame_count);
3551         return le32_to_cpu(*scd_ssn) & MAX_SN;
3552
3553 }
3554
3555 /**
3556  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3557  */
3558 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3559                                       struct iwl4965_ht_agg *agg,
3560                                       struct iwl4965_tx_resp *tx_resp,
3561                                       u16 start_idx)
3562 {
3563         u32 status;
3564         __le32 *frame_status = &tx_resp->status;
3565         struct ieee80211_tx_status *tx_status = NULL;
3566         struct ieee80211_hdr *hdr = NULL;
3567         int i, sh;
3568         int txq_id, idx;
3569         u16 seq;
3570
3571         if (agg->wait_for_ba)
3572                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3573
3574         agg->frame_count = tx_resp->frame_count;
3575         agg->start_idx = start_idx;
3576         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3577         agg->bitmap0 = agg->bitmap1 = 0;
3578
3579         /* # frames attempted by Tx command */
3580         if (agg->frame_count == 1) {
3581                 /* Only one frame was attempted; no block-ack will arrive */
3582                 struct iwl4965_tx_queue *txq ;
3583                 status = le32_to_cpu(frame_status[0]);
3584
3585                 txq_id = agg->txq_id;
3586                 txq = &priv->txq[txq_id];
3587                 /* FIXME: code repetition */
3588                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3589                                    agg->frame_count, agg->start_idx);
3590
3591                 tx_status = &(priv->txq[txq_id].txb[txq->q.read_ptr].status);
3592                 tx_status->retry_count = tx_resp->failure_frame;
3593                 tx_status->queue_number = status & 0xff;
3594                 tx_status->queue_length = tx_resp->bt_kill_count;
3595                 tx_status->queue_length |= tx_resp->failure_rts;
3596
3597                 tx_status->flags = iwl4965_is_tx_success(status)?
3598                         IEEE80211_TX_STATUS_ACK : 0;
3599                 tx_status->control.tx_rate =
3600                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3601                 /* FIXME: code repetition end */
3602
3603                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3604                                     status & 0xff, tx_resp->failure_frame);
3605                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3606                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3607
3608                 agg->wait_for_ba = 0;
3609         } else {
3610                 /* Two or more frames were attempted; expect block-ack */
3611                 u64 bitmap = 0;
3612                 int start = agg->start_idx;
3613
3614                 /* Construct bit-map of pending frames within Tx window */
3615                 for (i = 0; i < agg->frame_count; i++) {
3616                         u16 sc;
3617                         status = le32_to_cpu(frame_status[i]);
3618                         seq  = status >> 16;
3619                         idx = SEQ_TO_INDEX(seq);
3620                         txq_id = SEQ_TO_QUEUE(seq);
3621
3622                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3623                                       AGG_TX_STATE_ABORT_MSK))
3624                                 continue;
3625
3626                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3627                                            agg->frame_count, txq_id, idx);
3628
3629                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3630
3631                         sc = le16_to_cpu(hdr->seq_ctrl);
3632                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3633                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3634                                           " idx=%d, seq_idx=%d, seq=%d\n",
3635                                           idx, SEQ_TO_SN(sc),
3636                                           hdr->seq_ctrl);
3637                                 return -1;
3638                         }
3639
3640                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3641                                            i, idx, SEQ_TO_SN(sc));
3642
3643                         sh = idx - start;
3644                         if (sh > 64) {
3645                                 sh = (start - idx) + 0xff;
3646                                 bitmap = bitmap << sh;
3647                                 sh = 0;
3648                                 start = idx;
3649                         } else if (sh < -64)
3650                                 sh  = 0xff - (start - idx);
3651                         else if (sh < 0) {
3652                                 sh = start - idx;
3653                                 start = idx;
3654                                 bitmap = bitmap << sh;
3655                                 sh = 0;
3656                         }
3657                         bitmap |= (1 << sh);
3658                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3659                                            start, (u32)(bitmap & 0xFFFFFFFF));
3660                 }
3661
3662                 agg->bitmap0 = bitmap & 0xFFFFFFFF;
3663                 agg->bitmap1 = bitmap >> 32;
3664                 agg->start_idx = start;
3665                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3666                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3667                                    agg->frame_count, agg->start_idx,
3668                                    agg->bitmap0);
3669
3670                 if (bitmap)
3671                         agg->wait_for_ba = 1;
3672         }
3673         return 0;
3674 }
3675 #endif
3676 #endif
3677
3678 /**
3679  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3680  */
3681 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3682                             struct iwl4965_rx_mem_buffer *rxb)
3683 {
3684         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3685         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3686         int txq_id = SEQ_TO_QUEUE(sequence);
3687         int index = SEQ_TO_INDEX(sequence);
3688         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3689         struct ieee80211_tx_status *tx_status;
3690         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3691         u32  status = le32_to_cpu(tx_resp->status);
3692 #ifdef CONFIG_IWL4965_HT
3693 #ifdef CONFIG_IWL4965_HT_AGG
3694         int tid, sta_id;
3695 #endif
3696 #endif
3697
3698         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3699                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3700                           "is out of range [0-%d] %d %d\n", txq_id,
3701                           index, txq->q.n_bd, txq->q.write_ptr,
3702                           txq->q.read_ptr);
3703                 return;
3704         }
3705
3706 #ifdef CONFIG_IWL4965_HT
3707 #ifdef CONFIG_IWL4965_HT_AGG
3708         if (txq->sched_retry) {
3709                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3710                 struct ieee80211_hdr *hdr =
3711                         iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3712                 struct iwl4965_ht_agg *agg = NULL;
3713                 __le16 *qc = ieee80211_get_qos_ctrl(hdr);
3714
3715                 if (qc == NULL) {
3716                         IWL_ERROR("BUG_ON qc is null!!!!\n");
3717                         return;
3718                 }
3719
3720                 tid = le16_to_cpu(*qc) & 0xf;
3721
3722                 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3723                 if (unlikely(sta_id == IWL_INVALID_STATION)) {
3724                         IWL_ERROR("Station not known for\n");
3725                         return;
3726                 }
3727
3728                 agg = &priv->stations[sta_id].tid[tid].agg;
3729
3730                 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3731
3732                 if ((tx_resp->frame_count == 1) &&
3733                     !iwl4965_is_tx_success(status)) {
3734                         /* TODO: send BAR */
3735                 }
3736
3737                 if ((txq->q.read_ptr != (scd_ssn & 0xff))) {
3738                         index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3739                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3740                                            "%d index %d\n", scd_ssn , index);
3741                         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3742                 }
3743         } else {
3744 #endif /* CONFIG_IWL4965_HT_AGG */
3745 #endif /* CONFIG_IWL4965_HT */
3746         tx_status = &(txq->txb[txq->q.read_ptr].status);
3747
3748         tx_status->retry_count = tx_resp->failure_frame;
3749         tx_status->queue_number = status;
3750         tx_status->queue_length = tx_resp->bt_kill_count;
3751         tx_status->queue_length |= tx_resp->failure_rts;
3752
3753         tx_status->flags =
3754             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3755
3756         tx_status->control.tx_rate =
3757                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3758
3759         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3760                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3761                      status, le32_to_cpu(tx_resp->rate_n_flags),
3762                      tx_resp->failure_frame);
3763
3764         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3765         if (index != -1)
3766                 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3767 #ifdef CONFIG_IWL4965_HT
3768 #ifdef CONFIG_IWL4965_HT_AGG
3769         }
3770 #endif /* CONFIG_IWL4965_HT_AGG */
3771 #endif /* CONFIG_IWL4965_HT */
3772
3773         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3774                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3775 }
3776
3777
3778 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3779                                struct iwl4965_rx_mem_buffer *rxb)
3780 {
3781         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3782         struct iwl4965_alive_resp *palive;
3783         struct delayed_work *pwork;
3784
3785         palive = &pkt->u.alive_frame;
3786
3787         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3788                        "0x%01X 0x%01X\n",
3789                        palive->is_valid, palive->ver_type,
3790                        palive->ver_subtype);
3791
3792         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3793                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3794                 memcpy(&priv->card_alive_init,
3795                        &pkt->u.alive_frame,
3796                        sizeof(struct iwl4965_init_alive_resp));
3797                 pwork = &priv->init_alive_start;
3798         } else {
3799                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3800                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3801                        sizeof(struct iwl4965_alive_resp));
3802                 pwork = &priv->alive_start;
3803         }
3804
3805         /* We delay the ALIVE response by 5ms to
3806          * give the HW RF Kill time to activate... */
3807         if (palive->is_valid == UCODE_VALID_OK)
3808                 queue_delayed_work(priv->workqueue, pwork,
3809                                    msecs_to_jiffies(5));
3810         else
3811                 IWL_WARNING("uCode did not respond OK.\n");
3812 }
3813
3814 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3815                                  struct iwl4965_rx_mem_buffer *rxb)
3816 {
3817         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3818
3819         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3820         return;
3821 }
3822
3823 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3824                                struct iwl4965_rx_mem_buffer *rxb)
3825 {
3826         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3827
3828         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3829                 "seq 0x%04X ser 0x%08X\n",
3830                 le32_to_cpu(pkt->u.err_resp.error_type),
3831                 get_cmd_string(pkt->u.err_resp.cmd_id),
3832                 pkt->u.err_resp.cmd_id,
3833                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3834                 le32_to_cpu(pkt->u.err_resp.error_info));
3835 }
3836
3837 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3838
3839 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3840 {
3841         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3842         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3843         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3844         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3845                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3846         rxon->channel = csa->channel;
3847         priv->staging_rxon.channel = csa->channel;
3848 }
3849
3850 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3851                                           struct iwl4965_rx_mem_buffer *rxb)
3852 {
3853 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3854         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3855         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3856
3857         if (!report->state) {
3858                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3859                           "Spectrum Measure Notification: Start\n");
3860                 return;
3861         }
3862
3863         memcpy(&priv->measure_report, report, sizeof(*report));
3864         priv->measurement_status |= MEASUREMENT_READY;
3865 #endif
3866 }
3867
3868 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3869                                   struct iwl4965_rx_mem_buffer *rxb)
3870 {
3871 #ifdef CONFIG_IWL4965_DEBUG
3872         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3873         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3874         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3875                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3876 #endif
3877 }
3878
3879 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3880                                              struct iwl4965_rx_mem_buffer *rxb)
3881 {
3882         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3883         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3884                         "notification for %s:\n",
3885                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3886         iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3887 }
3888
3889 static void iwl4965_bg_beacon_update(struct work_struct *work)
3890 {
3891         struct iwl4965_priv *priv =
3892                 container_of(work, struct iwl4965_priv, beacon_update);
3893         struct sk_buff *beacon;
3894
3895         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3896         beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3897
3898         if (!beacon) {
3899                 IWL_ERROR("update beacon failed\n");
3900                 return;
3901         }
3902
3903         mutex_lock(&priv->mutex);
3904         /* new beacon skb is allocated every time; dispose previous.*/
3905         if (priv->ibss_beacon)
3906                 dev_kfree_skb(priv->ibss_beacon);
3907
3908         priv->ibss_beacon = beacon;
3909         mutex_unlock(&priv->mutex);
3910
3911         iwl4965_send_beacon_cmd(priv);
3912 }
3913
3914 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3915                                 struct iwl4965_rx_mem_buffer *rxb)
3916 {
3917 #ifdef CONFIG_IWL4965_DEBUG
3918         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3919         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3920         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3921
3922         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3923                 "tsf %d %d rate %d\n",
3924                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3925                 beacon->beacon_notify_hdr.failure_frame,
3926                 le32_to_cpu(beacon->ibss_mgr_status),
3927                 le32_to_cpu(beacon->high_tsf),
3928                 le32_to_cpu(beacon->low_tsf), rate);
3929 #endif
3930
3931         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3932             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3933                 queue_work(priv->workqueue, &priv->beacon_update);
3934 }
3935
3936 /* Service response to REPLY_SCAN_CMD (0x80) */
3937 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
3938                               struct iwl4965_rx_mem_buffer *rxb)
3939 {
3940 #ifdef CONFIG_IWL4965_DEBUG
3941         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3942         struct iwl4965_scanreq_notification *notif =
3943             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3944
3945         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3946 #endif
3947 }
3948
3949 /* Service SCAN_START_NOTIFICATION (0x82) */
3950 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
3951                                     struct iwl4965_rx_mem_buffer *rxb)
3952 {
3953         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3954         struct iwl4965_scanstart_notification *notif =
3955             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3956         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3957         IWL_DEBUG_SCAN("Scan start: "
3958                        "%d [802.11%s] "
3959                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3960                        notif->channel,
3961                        notif->band ? "bg" : "a",
3962                        notif->tsf_high,
3963                        notif->tsf_low, notif->status, notif->beacon_timer);
3964 }
3965
3966 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3967 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
3968                                       struct iwl4965_rx_mem_buffer *rxb)
3969 {
3970         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3971         struct iwl4965_scanresults_notification *notif =
3972             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3973
3974         IWL_DEBUG_SCAN("Scan ch.res: "
3975                        "%d [802.11%s] "
3976                        "(TSF: 0x%08X:%08X) - %d "
3977                        "elapsed=%lu usec (%dms since last)\n",
3978                        notif->channel,
3979                        notif->band ? "bg" : "a",
3980                        le32_to_cpu(notif->tsf_high),
3981                        le32_to_cpu(notif->tsf_low),
3982                        le32_to_cpu(notif->statistics[0]),
3983                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3984                        jiffies_to_msecs(elapsed_jiffies
3985                                         (priv->last_scan_jiffies, jiffies)));
3986
3987         priv->last_scan_jiffies = jiffies;
3988         priv->next_scan_jiffies = 0;
3989 }
3990
3991 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3992 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
3993                                        struct iwl4965_rx_mem_buffer *rxb)
3994 {
3995         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3996         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3997
3998         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3999                        scan_notif->scanned_channels,
4000                        scan_notif->tsf_low,
4001                        scan_notif->tsf_high, scan_notif->status);
4002
4003         /* The HW is no longer scanning */
4004         clear_bit(STATUS_SCAN_HW, &priv->status);
4005
4006         /* The scan completion notification came in, so kill that timer... */
4007         cancel_delayed_work(&priv->scan_check);
4008
4009         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
4010                        (priv->scan_bands == 2) ? "2.4" : "5.2",
4011                        jiffies_to_msecs(elapsed_jiffies
4012                                         (priv->scan_pass_start, jiffies)));
4013
4014         /* Remove this scanned band from the list
4015          * of pending bands to scan */
4016         priv->scan_bands--;
4017
4018         /* If a request to abort was given, or the scan did not succeed
4019          * then we reset the scan state machine and terminate,
4020          * re-queuing another scan if one has been requested */
4021         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4022                 IWL_DEBUG_INFO("Aborted scan completed.\n");
4023                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
4024         } else {
4025                 /* If there are more bands on this scan pass reschedule */
4026                 if (priv->scan_bands > 0)
4027                         goto reschedule;
4028         }
4029
4030         priv->last_scan_jiffies = jiffies;
4031         priv->next_scan_jiffies = 0;
4032         IWL_DEBUG_INFO("Setting scan to off\n");
4033
4034         clear_bit(STATUS_SCANNING, &priv->status);
4035
4036         IWL_DEBUG_INFO("Scan took %dms\n",
4037                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4038
4039         queue_work(priv->workqueue, &priv->scan_completed);
4040
4041         return;
4042
4043 reschedule:
4044         priv->scan_pass_start = jiffies;
4045         queue_work(priv->workqueue, &priv->request_scan);
4046 }
4047
4048 /* Handle notification from uCode that card's power state is changing
4049  * due to software, hardware, or critical temperature RFKILL */
4050 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4051                                     struct iwl4965_rx_mem_buffer *rxb)
4052 {
4053         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4054         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4055         unsigned long status = priv->status;
4056
4057         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4058                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4059                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4060
4061         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4062                      RF_CARD_DISABLED)) {
4063
4064                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4065                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4066
4067                 if (!iwl4965_grab_nic_access(priv)) {
4068                         iwl4965_write_direct32(
4069                                 priv, HBUS_TARG_MBX_C,
4070                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4071
4072                         iwl4965_release_nic_access(priv);
4073                 }
4074
4075                 if (!(flags & RXON_CARD_DISABLED)) {
4076                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4077                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4078                         if (!iwl4965_grab_nic_access(priv)) {
4079                                 iwl4965_write_direct32(
4080                                         priv, HBUS_TARG_MBX_C,
4081                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4082
4083                                 iwl4965_release_nic_access(priv);
4084                         }
4085                 }
4086
4087                 if (flags & RF_CARD_DISABLED) {
4088                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4089                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4090                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4091                         if (!iwl4965_grab_nic_access(priv))
4092                                 iwl4965_release_nic_access(priv);
4093                 }
4094         }
4095
4096         if (flags & HW_CARD_DISABLED)
4097                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4098         else
4099                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4100
4101
4102         if (flags & SW_CARD_DISABLED)
4103                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4104         else
4105                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4106
4107         if (!(flags & RXON_CARD_DISABLED))
4108                 iwl4965_scan_cancel(priv);
4109
4110         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4111              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4112             (test_bit(STATUS_RF_KILL_SW, &status) !=
4113              test_bit(STATUS_RF_KILL_SW, &priv->status)))
4114                 queue_work(priv->workqueue, &priv->rf_kill);
4115         else
4116                 wake_up_interruptible(&priv->wait_command_queue);
4117 }
4118
4119 /**
4120  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4121  *
4122  * Setup the RX handlers for each of the reply types sent from the uCode
4123  * to the host.
4124  *
4125  * This function chains into the hardware specific files for them to setup
4126  * any hardware specific handlers as well.
4127  */
4128 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4129 {
4130         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4131         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4132         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4133         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4134         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4135             iwl4965_rx_spectrum_measure_notif;
4136         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4137         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4138             iwl4965_rx_pm_debug_statistics_notif;
4139         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4140
4141         /*
4142          * The same handler is used for both the REPLY to a discrete
4143          * statistics request from the host as well as for the periodic
4144          * statistics notifications (after received beacons) from the uCode.
4145          */
4146         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4147         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4148
4149         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4150         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4151         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4152             iwl4965_rx_scan_results_notif;
4153         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4154             iwl4965_rx_scan_complete_notif;
4155         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4156         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4157
4158         /* Set up hardware specific Rx handlers */
4159         iwl4965_hw_rx_handler_setup(priv);
4160 }
4161
4162 /**
4163  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4164  * @rxb: Rx buffer to reclaim
4165  *
4166  * If an Rx buffer has an async callback associated with it the callback
4167  * will be executed.  The attached skb (if present) will only be freed
4168  * if the callback returns 1
4169  */
4170 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4171                                 struct iwl4965_rx_mem_buffer *rxb)
4172 {
4173         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4174         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4175         int txq_id = SEQ_TO_QUEUE(sequence);
4176         int index = SEQ_TO_INDEX(sequence);
4177         int huge = sequence & SEQ_HUGE_FRAME;
4178         int cmd_index;
4179         struct iwl4965_cmd *cmd;
4180
4181         /* If a Tx command is being handled and it isn't in the actual
4182          * command queue then there a command routing bug has been introduced
4183          * in the queue management code. */
4184         if (txq_id != IWL_CMD_QUEUE_NUM)
4185                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4186                           txq_id, pkt->hdr.cmd);
4187         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4188
4189         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4190         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4191
4192         /* Input error checking is done when commands are added to queue. */
4193         if (cmd->meta.flags & CMD_WANT_SKB) {
4194                 cmd->meta.source->u.skb = rxb->skb;
4195                 rxb->skb = NULL;
4196         } else if (cmd->meta.u.callback &&
4197                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
4198                 rxb->skb = NULL;
4199
4200         iwl4965_tx_queue_reclaim(priv, txq_id, index);
4201
4202         if (!(cmd->meta.flags & CMD_ASYNC)) {
4203                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4204                 wake_up_interruptible(&priv->wait_command_queue);
4205         }
4206 }
4207
4208 /************************** RX-FUNCTIONS ****************************/
4209 /*
4210  * Rx theory of operation
4211  *
4212  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4213  * each of which point to Receive Buffers to be filled by 4965.  These get
4214  * used not only for Rx frames, but for any command response or notification
4215  * from the 4965.  The driver and 4965 manage the Rx buffers by means
4216  * of indexes into the circular buffer.
4217  *
4218  * Rx Queue Indexes
4219  * The host/firmware share two index registers for managing the Rx buffers.
4220  *
4221  * The READ index maps to the first position that the firmware may be writing
4222  * to -- the driver can read up to (but not including) this position and get
4223  * good data.
4224  * The READ index is managed by the firmware once the card is enabled.
4225  *
4226  * The WRITE index maps to the last position the driver has read from -- the
4227  * position preceding WRITE is the last slot the firmware can place a packet.
4228  *
4229  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4230  * WRITE = READ.
4231  *
4232  * During initialization, the host sets up the READ queue position to the first
4233  * INDEX position, and WRITE to the last (READ - 1 wrapped)
4234  *
4235  * When the firmware places a packet in a buffer, it will advance the READ index
4236  * and fire the RX interrupt.  The driver can then query the READ index and
4237  * process as many packets as possible, moving the WRITE index forward as it
4238  * resets the Rx queue buffers with new memory.
4239  *
4240  * The management in the driver is as follows:
4241  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
4242  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4243  *   to replenish the iwl->rxq->rx_free.
4244  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4245  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
4246  *   'processed' and 'read' driver indexes as well)
4247  * + A received packet is processed and handed to the kernel network stack,
4248  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
4249  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4250  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4251  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
4252  *   were enough free buffers and RX_STALLED is set it is cleared.
4253  *
4254  *
4255  * Driver sequence:
4256  *
4257  * iwl4965_rx_queue_alloc()   Allocates rx_free
4258  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
4259  *                            iwl4965_rx_queue_restock
4260  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4261  *                            queue, updates firmware pointers, and updates
4262  *                            the WRITE index.  If insufficient rx_free buffers
4263  *                            are available, schedules iwl4965_rx_replenish
4264  *
4265  * -- enable interrupts --
4266  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
4267  *                            READ INDEX, detaching the SKB from the pool.
4268  *                            Moves the packet buffer from queue to rx_used.
4269  *                            Calls iwl4965_rx_queue_restock to refill any empty
4270  *                            slots.
4271  * ...
4272  *
4273  */
4274
4275 /**
4276  * iwl4965_rx_queue_space - Return number of free slots available in queue.
4277  */
4278 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4279 {
4280         int s = q->read - q->write;
4281         if (s <= 0)
4282                 s += RX_QUEUE_SIZE;
4283         /* keep some buffer to not confuse full and empty queue */
4284         s -= 2;
4285         if (s < 0)
4286                 s = 0;
4287         return s;
4288 }
4289
4290 /**
4291  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4292  */
4293 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4294 {
4295         u32 reg = 0;
4296         int rc = 0;
4297         unsigned long flags;
4298
4299         spin_lock_irqsave(&q->lock, flags);
4300
4301         if (q->need_update == 0)
4302                 goto exit_unlock;
4303
4304         /* If power-saving is in use, make sure device is awake */
4305         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4306                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4307
4308                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4309                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4310                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4311                         goto exit_unlock;
4312                 }
4313
4314                 rc = iwl4965_grab_nic_access(priv);
4315                 if (rc)
4316                         goto exit_unlock;
4317
4318                 /* Device expects a multiple of 8 */
4319                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4320                                      q->write & ~0x7);
4321                 iwl4965_release_nic_access(priv);
4322
4323         /* Else device is assumed to be awake */
4324         } else
4325                 /* Device expects a multiple of 8 */
4326                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4327
4328
4329         q->need_update = 0;
4330
4331  exit_unlock:
4332         spin_unlock_irqrestore(&q->lock, flags);
4333         return rc;
4334 }
4335
4336 /**
4337  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4338  */
4339 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4340                                           dma_addr_t dma_addr)
4341 {
4342         return cpu_to_le32((u32)(dma_addr >> 8));
4343 }
4344
4345
4346 /**
4347  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4348  *
4349  * If there are slots in the RX queue that need to be restocked,
4350  * and we have free pre-allocated buffers, fill the ranks as much
4351  * as we can, pulling from rx_free.
4352  *
4353  * This moves the 'write' index forward to catch up with 'processed', and
4354  * also updates the memory address in the firmware to reference the new
4355  * target buffer.
4356  */
4357 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4358 {
4359         struct iwl4965_rx_queue *rxq = &priv->rxq;
4360         struct list_head *element;
4361         struct iwl4965_rx_mem_buffer *rxb;
4362         unsigned long flags;
4363         int write, rc;
4364
4365         spin_lock_irqsave(&rxq->lock, flags);
4366         write = rxq->write & ~0x7;
4367         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4368                 /* Get next free Rx buffer, remove from free list */
4369                 element = rxq->rx_free.next;
4370                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4371                 list_del(element);
4372
4373                 /* Point to Rx buffer via next RBD in circular buffer */
4374                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4375                 rxq->queue[rxq->write] = rxb;
4376                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4377                 rxq->free_count--;
4378         }
4379         spin_unlock_irqrestore(&rxq->lock, flags);
4380         /* If the pre-allocated buffer pool is dropping low, schedule to
4381          * refill it */
4382         if (rxq->free_count <= RX_LOW_WATERMARK)
4383                 queue_work(priv->workqueue, &priv->rx_replenish);
4384
4385
4386         /* If we've added more space for the firmware to place data, tell it.
4387          * Increment device's write pointer in multiples of 8. */
4388         if ((write != (rxq->write & ~0x7))
4389             || (abs(rxq->write - rxq->read) > 7)) {
4390                 spin_lock_irqsave(&rxq->lock, flags);
4391                 rxq->need_update = 1;
4392                 spin_unlock_irqrestore(&rxq->lock, flags);
4393                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4394                 if (rc)
4395                         return rc;
4396         }
4397
4398         return 0;
4399 }
4400
4401 /**
4402  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4403  *
4404  * When moving to rx_free an SKB is allocated for the slot.
4405  *
4406  * Also restock the Rx queue via iwl4965_rx_queue_restock.
4407  * This is called as a scheduled work item (except for during initialization)
4408  */
4409 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4410 {
4411         struct iwl4965_rx_queue *rxq = &priv->rxq;
4412         struct list_head *element;
4413         struct iwl4965_rx_mem_buffer *rxb;
4414         unsigned long flags;
4415         spin_lock_irqsave(&rxq->lock, flags);
4416         while (!list_empty(&rxq->rx_used)) {
4417                 element = rxq->rx_used.next;
4418                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4419
4420                 /* Alloc a new receive buffer */
4421                 rxb->skb =
4422                     alloc_skb(priv->hw_setting.rx_buf_size,
4423                                 __GFP_NOWARN | GFP_ATOMIC);
4424                 if (!rxb->skb) {
4425                         if (net_ratelimit())
4426                                 printk(KERN_CRIT DRV_NAME
4427                                        ": Can not allocate SKB buffers\n");
4428                         /* We don't reschedule replenish work here -- we will
4429                          * call the restock method and if it still needs
4430                          * more buffers it will schedule replenish */
4431                         break;
4432                 }
4433                 priv->alloc_rxb_skb++;
4434                 list_del(element);
4435
4436                 /* Get physical address of RB/SKB */
4437                 rxb->dma_addr =
4438                     pci_map_single(priv->pci_dev, rxb->skb->data,
4439                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4440                 list_add_tail(&rxb->list, &rxq->rx_free);
4441                 rxq->free_count++;
4442         }
4443         spin_unlock_irqrestore(&rxq->lock, flags);
4444 }
4445
4446 /*
4447  * this should be called while priv->lock is locked
4448 */
4449 static void __iwl4965_rx_replenish(void *data)
4450 {
4451         struct iwl4965_priv *priv = data;
4452
4453         iwl4965_rx_allocate(priv);
4454         iwl4965_rx_queue_restock(priv);
4455 }
4456
4457
4458 void iwl4965_rx_replenish(void *data)
4459 {
4460         struct iwl4965_priv *priv = data;
4461         unsigned long flags;
4462
4463         iwl4965_rx_allocate(priv);
4464
4465         spin_lock_irqsave(&priv->lock, flags);
4466         iwl4965_rx_queue_restock(priv);
4467         spin_unlock_irqrestore(&priv->lock, flags);
4468 }
4469
4470 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4471  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4472  * This free routine walks the list of POOL entries and if SKB is set to
4473  * non NULL it is unmapped and freed
4474  */
4475 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4476 {
4477         int i;
4478         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4479                 if (rxq->pool[i].skb != NULL) {
4480                         pci_unmap_single(priv->pci_dev,
4481                                          rxq->pool[i].dma_addr,
4482                                          priv->hw_setting.rx_buf_size,
4483                                          PCI_DMA_FROMDEVICE);
4484                         dev_kfree_skb(rxq->pool[i].skb);
4485                 }
4486         }
4487
4488         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4489                             rxq->dma_addr);
4490         rxq->bd = NULL;
4491 }
4492
4493 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4494 {
4495         struct iwl4965_rx_queue *rxq = &priv->rxq;
4496         struct pci_dev *dev = priv->pci_dev;
4497         int i;
4498
4499         spin_lock_init(&rxq->lock);
4500         INIT_LIST_HEAD(&rxq->rx_free);
4501         INIT_LIST_HEAD(&rxq->rx_used);
4502
4503         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4504         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4505         if (!rxq->bd)
4506                 return -ENOMEM;
4507
4508         /* Fill the rx_used queue with _all_ of the Rx buffers */
4509         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4510                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4511
4512         /* Set us so that we have processed and used all buffers, but have
4513          * not restocked the Rx queue with fresh buffers */
4514         rxq->read = rxq->write = 0;
4515         rxq->free_count = 0;
4516         rxq->need_update = 0;
4517         return 0;
4518 }
4519
4520 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4521 {
4522         unsigned long flags;
4523         int i;
4524         spin_lock_irqsave(&rxq->lock, flags);
4525         INIT_LIST_HEAD(&rxq->rx_free);
4526         INIT_LIST_HEAD(&rxq->rx_used);
4527         /* Fill the rx_used queue with _all_ of the Rx buffers */
4528         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4529                 /* In the reset function, these buffers may have been allocated
4530                  * to an SKB, so we need to unmap and free potential storage */
4531                 if (rxq->pool[i].skb != NULL) {
4532                         pci_unmap_single(priv->pci_dev,
4533                                          rxq->pool[i].dma_addr,
4534                                          priv->hw_setting.rx_buf_size,
4535                                          PCI_DMA_FROMDEVICE);
4536                         priv->alloc_rxb_skb--;
4537                         dev_kfree_skb(rxq->pool[i].skb);
4538                         rxq->pool[i].skb = NULL;
4539                 }
4540                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4541         }
4542
4543         /* Set us so that we have processed and used all buffers, but have
4544          * not restocked the Rx queue with fresh buffers */
4545         rxq->read = rxq->write = 0;
4546         rxq->free_count = 0;
4547         spin_unlock_irqrestore(&rxq->lock, flags);
4548 }
4549
4550 /* Convert linear signal-to-noise ratio into dB */
4551 static u8 ratio2dB[100] = {
4552 /*       0   1   2   3   4   5   6   7   8   9 */
4553          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4554         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4555         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4556         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4557         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4558         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4559         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4560         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4561         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4562         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4563 };
4564
4565 /* Calculates a relative dB value from a ratio of linear
4566  *   (i.e. not dB) signal levels.
4567  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4568 int iwl4965_calc_db_from_ratio(int sig_ratio)
4569 {
4570         /* 1000:1 or higher just report as 60 dB */
4571         if (sig_ratio >= 1000)
4572                 return 60;
4573
4574         /* 100:1 or higher, divide by 10 and use table,
4575          *   add 20 dB to make up for divide by 10 */
4576         if (sig_ratio >= 100)
4577                 return (20 + (int)ratio2dB[sig_ratio/10]);
4578
4579         /* We shouldn't see this */
4580         if (sig_ratio < 1)
4581                 return 0;
4582
4583         /* Use table for ratios 1:1 - 99:1 */
4584         return (int)ratio2dB[sig_ratio];
4585 }
4586
4587 #define PERFECT_RSSI (-20) /* dBm */
4588 #define WORST_RSSI (-95)   /* dBm */
4589 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4590
4591 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4592  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4593  *   about formulas used below. */
4594 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4595 {
4596         int sig_qual;
4597         int degradation = PERFECT_RSSI - rssi_dbm;
4598
4599         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4600          * as indicator; formula is (signal dbm - noise dbm).
4601          * SNR at or above 40 is a great signal (100%).
4602          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4603          * Weakest usable signal is usually 10 - 15 dB SNR. */
4604         if (noise_dbm) {
4605                 if (rssi_dbm - noise_dbm >= 40)
4606                         return 100;
4607                 else if (rssi_dbm < noise_dbm)
4608                         return 0;
4609                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4610
4611         /* Else use just the signal level.
4612          * This formula is a least squares fit of data points collected and
4613          *   compared with a reference system that had a percentage (%) display
4614          *   for signal quality. */
4615         } else
4616                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4617                             (15 * RSSI_RANGE + 62 * degradation)) /
4618                            (RSSI_RANGE * RSSI_RANGE);
4619
4620         if (sig_qual > 100)
4621                 sig_qual = 100;
4622         else if (sig_qual < 1)
4623                 sig_qual = 0;
4624
4625         return sig_qual;
4626 }
4627
4628 /**
4629  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4630  *
4631  * Uses the priv->rx_handlers callback function array to invoke
4632  * the appropriate handlers, including command responses,
4633  * frame-received notifications, and other notifications.
4634  */
4635 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4636 {
4637         struct iwl4965_rx_mem_buffer *rxb;
4638         struct iwl4965_rx_packet *pkt;
4639         struct iwl4965_rx_queue *rxq = &priv->rxq;
4640         u32 r, i;
4641         int reclaim;
4642         unsigned long flags;
4643         u8 fill_rx = 0;
4644         u32 count = 0;
4645
4646         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4647          * buffer that the driver may process (last buffer filled by ucode). */
4648         r = iwl4965_hw_get_rx_read(priv);
4649         i = rxq->read;
4650
4651         /* Rx interrupt, but nothing sent from uCode */
4652         if (i == r)
4653                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4654
4655         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4656                 fill_rx = 1;
4657
4658         while (i != r) {
4659                 rxb = rxq->queue[i];
4660
4661                 /* If an RXB doesn't have a Rx queue slot associated with it,
4662                  * then a bug has been introduced in the queue refilling
4663                  * routines -- catch it here */
4664                 BUG_ON(rxb == NULL);
4665
4666                 rxq->queue[i] = NULL;
4667
4668                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4669                                             priv->hw_setting.rx_buf_size,
4670                                             PCI_DMA_FROMDEVICE);
4671                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4672
4673                 /* Reclaim a command buffer only if this packet is a response
4674                  *   to a (driver-originated) command.
4675                  * If the packet (e.g. Rx frame) originated from uCode,
4676                  *   there is no command buffer to reclaim.
4677                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4678                  *   but apparently a few don't get set; catch them here. */
4679                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4680                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4681                         (pkt->hdr.cmd != REPLY_4965_RX) &&
4682                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4683                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4684                         (pkt->hdr.cmd != REPLY_TX);
4685
4686                 /* Based on type of command response or notification,
4687                  *   handle those that need handling via function in
4688                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4689                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4690                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4691                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4692                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4693                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4694                 } else {
4695                         /* No handling needed */
4696                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4697                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4698                                 r, i, get_cmd_string(pkt->hdr.cmd),
4699                                 pkt->hdr.cmd);
4700                 }
4701
4702                 if (reclaim) {
4703                         /* Invoke any callbacks, transfer the skb to caller, and
4704                          * fire off the (possibly) blocking iwl4965_send_cmd()
4705                          * as we reclaim the driver command queue */
4706                         if (rxb && rxb->skb)
4707                                 iwl4965_tx_cmd_complete(priv, rxb);
4708                         else
4709                                 IWL_WARNING("Claim null rxb?\n");
4710                 }
4711
4712                 /* For now we just don't re-use anything.  We can tweak this
4713                  * later to try and re-use notification packets and SKBs that
4714                  * fail to Rx correctly */
4715                 if (rxb->skb != NULL) {
4716                         priv->alloc_rxb_skb--;
4717                         dev_kfree_skb_any(rxb->skb);
4718                         rxb->skb = NULL;
4719                 }
4720
4721                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4722                                  priv->hw_setting.rx_buf_size,
4723                                  PCI_DMA_FROMDEVICE);
4724                 spin_lock_irqsave(&rxq->lock, flags);
4725                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4726                 spin_unlock_irqrestore(&rxq->lock, flags);
4727                 i = (i + 1) & RX_QUEUE_MASK;
4728                 /* If there are a lot of unused frames,
4729                  * restock the Rx queue so ucode wont assert. */
4730                 if (fill_rx) {
4731                         count++;
4732                         if (count >= 8) {
4733                                 priv->rxq.read = i;
4734                                 __iwl4965_rx_replenish(priv);
4735                                 count = 0;
4736                         }
4737                 }
4738         }
4739
4740         /* Backtrack one entry */
4741         priv->rxq.read = i;
4742         iwl4965_rx_queue_restock(priv);
4743 }
4744
4745 /**
4746  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4747  */
4748 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4749                                   struct iwl4965_tx_queue *txq)
4750 {
4751         u32 reg = 0;
4752         int rc = 0;
4753         int txq_id = txq->q.id;
4754
4755         if (txq->need_update == 0)
4756                 return rc;
4757
4758         /* if we're trying to save power */
4759         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4760                 /* wake up nic if it's powered down ...
4761                  * uCode will wake up, and interrupt us again, so next
4762                  * time we'll skip this part. */
4763                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4764
4765                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4766                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4767                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4768                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4769                         return rc;
4770                 }
4771
4772                 /* restore this queue's parameters in nic hardware. */
4773                 rc = iwl4965_grab_nic_access(priv);
4774                 if (rc)
4775                         return rc;
4776                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4777                                      txq->q.write_ptr | (txq_id << 8));
4778                 iwl4965_release_nic_access(priv);
4779
4780         /* else not in power-save mode, uCode will never sleep when we're
4781          * trying to tx (during RFKILL, we're not trying to tx). */
4782         } else
4783                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4784                             txq->q.write_ptr | (txq_id << 8));
4785
4786         txq->need_update = 0;
4787
4788         return rc;
4789 }
4790
4791 #ifdef CONFIG_IWL4965_DEBUG
4792 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4793 {
4794         DECLARE_MAC_BUF(mac);
4795
4796         IWL_DEBUG_RADIO("RX CONFIG:\n");
4797         iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4798         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4799         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4800         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4801                         le32_to_cpu(rxon->filter_flags));
4802         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4803         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4804                         rxon->ofdm_basic_rates);
4805         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4806         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4807                         print_mac(mac, rxon->node_addr));
4808         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4809                         print_mac(mac, rxon->bssid_addr));
4810         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4811 }
4812 #endif
4813
4814 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4815 {
4816         IWL_DEBUG_ISR("Enabling interrupts\n");
4817         set_bit(STATUS_INT_ENABLED, &priv->status);
4818         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4819 }
4820
4821 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4822 {
4823         clear_bit(STATUS_INT_ENABLED, &priv->status);
4824
4825         /* disable interrupts from uCode/NIC to host */
4826         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4827
4828         /* acknowledge/clear/reset any interrupts still pending
4829          * from uCode or flow handler (Rx/Tx DMA) */
4830         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4831         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4832         IWL_DEBUG_ISR("Disabled interrupts\n");
4833 }
4834
4835 static const char *desc_lookup(int i)
4836 {
4837         switch (i) {
4838         case 1:
4839                 return "FAIL";
4840         case 2:
4841                 return "BAD_PARAM";
4842         case 3:
4843                 return "BAD_CHECKSUM";
4844         case 4:
4845                 return "NMI_INTERRUPT";
4846         case 5:
4847                 return "SYSASSERT";
4848         case 6:
4849                 return "FATAL_ERROR";
4850         }
4851
4852         return "UNKNOWN";
4853 }
4854
4855 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4856 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4857
4858 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4859 {
4860         u32 data2, line;
4861         u32 desc, time, count, base, data1;
4862         u32 blink1, blink2, ilink1, ilink2;
4863         int rc;
4864
4865         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4866
4867         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4868                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4869                 return;
4870         }
4871
4872         rc = iwl4965_grab_nic_access(priv);
4873         if (rc) {
4874                 IWL_WARNING("Can not read from adapter at this time.\n");
4875                 return;
4876         }
4877
4878         count = iwl4965_read_targ_mem(priv, base);
4879
4880         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4881                 IWL_ERROR("Start IWL Error Log Dump:\n");
4882                 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4883                           priv->status, priv->config, count);
4884         }
4885
4886         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4887         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4888         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4889         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4890         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4891         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4892         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4893         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4894         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4895
4896         IWL_ERROR("Desc               Time       "
4897                   "data1      data2      line\n");
4898         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4899                   desc_lookup(desc), desc, time, data1, data2, line);
4900         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4901         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4902                   ilink1, ilink2);
4903
4904         iwl4965_release_nic_access(priv);
4905 }
4906
4907 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4908
4909 /**
4910  * iwl4965_print_event_log - Dump error event log to syslog
4911  *
4912  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4913  */
4914 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4915                                 u32 num_events, u32 mode)
4916 {
4917         u32 i;
4918         u32 base;       /* SRAM byte address of event log header */
4919         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4920         u32 ptr;        /* SRAM byte address of log data */
4921         u32 ev, time, data; /* event log data */
4922
4923         if (num_events == 0)
4924                 return;
4925
4926         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4927
4928         if (mode == 0)
4929                 event_size = 2 * sizeof(u32);
4930         else
4931                 event_size = 3 * sizeof(u32);
4932
4933         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4934
4935         /* "time" is actually "data" for mode 0 (no timestamp).
4936          * place event id # at far right for easier visual parsing. */
4937         for (i = 0; i < num_events; i++) {
4938                 ev = iwl4965_read_targ_mem(priv, ptr);
4939                 ptr += sizeof(u32);
4940                 time = iwl4965_read_targ_mem(priv, ptr);
4941                 ptr += sizeof(u32);
4942                 if (mode == 0)
4943                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4944                 else {
4945                         data = iwl4965_read_targ_mem(priv, ptr);
4946                         ptr += sizeof(u32);
4947                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4948                 }
4949         }
4950 }
4951
4952 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4953 {
4954         int rc;
4955         u32 base;       /* SRAM byte address of event log header */
4956         u32 capacity;   /* event log capacity in # entries */
4957         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4958         u32 num_wraps;  /* # times uCode wrapped to top of log */
4959         u32 next_entry; /* index of next entry to be written by uCode */
4960         u32 size;       /* # entries that we'll print */
4961
4962         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4963         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4964                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4965                 return;
4966         }
4967
4968         rc = iwl4965_grab_nic_access(priv);
4969         if (rc) {
4970                 IWL_WARNING("Can not read from adapter at this time.\n");
4971                 return;
4972         }
4973
4974         /* event log header */
4975         capacity = iwl4965_read_targ_mem(priv, base);
4976         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4977         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4978         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4979
4980         size = num_wraps ? capacity : next_entry;
4981
4982         /* bail out if nothing in log */
4983         if (size == 0) {
4984                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4985                 iwl4965_release_nic_access(priv);
4986                 return;
4987         }
4988
4989         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4990                   size, num_wraps);
4991
4992         /* if uCode has wrapped back to top of log, start at the oldest entry,
4993          * i.e the next one that uCode would fill. */
4994         if (num_wraps)
4995                 iwl4965_print_event_log(priv, next_entry,
4996                                     capacity - next_entry, mode);
4997
4998         /* (then/else) start at top of log */
4999         iwl4965_print_event_log(priv, 0, next_entry, mode);
5000
5001         iwl4965_release_nic_access(priv);
5002 }
5003
5004 /**
5005  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
5006  */
5007 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
5008 {
5009         /* Set the FW error flag -- cleared on iwl4965_down */
5010         set_bit(STATUS_FW_ERROR, &priv->status);
5011
5012         /* Cancel currently queued command. */
5013         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
5014
5015 #ifdef CONFIG_IWL4965_DEBUG
5016         if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
5017                 iwl4965_dump_nic_error_log(priv);
5018                 iwl4965_dump_nic_event_log(priv);
5019                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
5020         }
5021 #endif
5022
5023         wake_up_interruptible(&priv->wait_command_queue);
5024
5025         /* Keep the restart process from trying to send host
5026          * commands by clearing the INIT status bit */
5027         clear_bit(STATUS_READY, &priv->status);
5028
5029         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5030                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
5031                           "Restarting adapter due to uCode error.\n");
5032
5033                 if (iwl4965_is_associated(priv)) {
5034                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
5035                                sizeof(priv->recovery_rxon));
5036                         priv->error_recovering = 1;
5037                 }
5038                 queue_work(priv->workqueue, &priv->restart);
5039         }
5040 }
5041
5042 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
5043 {
5044         unsigned long flags;
5045
5046         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
5047                sizeof(priv->staging_rxon));
5048         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5049         iwl4965_commit_rxon(priv);
5050
5051         iwl4965_rxon_add_station(priv, priv->bssid, 1);
5052
5053         spin_lock_irqsave(&priv->lock, flags);
5054         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
5055         priv->error_recovering = 0;
5056         spin_unlock_irqrestore(&priv->lock, flags);
5057 }
5058
5059 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
5060 {
5061         u32 inta, handled = 0;
5062         u32 inta_fh;
5063         unsigned long flags;
5064 #ifdef CONFIG_IWL4965_DEBUG
5065         u32 inta_mask;
5066 #endif
5067
5068         spin_lock_irqsave(&priv->lock, flags);
5069
5070         /* Ack/clear/reset pending uCode interrupts.
5071          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
5072          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
5073         inta = iwl4965_read32(priv, CSR_INT);
5074         iwl4965_write32(priv, CSR_INT, inta);
5075
5076         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
5077          * Any new interrupts that happen after this, either while we're
5078          * in this tasklet, or later, will show up in next ISR/tasklet. */
5079         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5080         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5081
5082 #ifdef CONFIG_IWL4965_DEBUG
5083         if (iwl4965_debug_level & IWL_DL_ISR) {
5084                 /* just for debug */
5085                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5086                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5087                               inta, inta_mask, inta_fh);
5088         }
5089 #endif
5090
5091         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5092          * atomic, make sure that inta covers all the interrupts that
5093          * we've discovered, even if FH interrupt came in just after
5094          * reading CSR_INT. */
5095         if (inta_fh & CSR_FH_INT_RX_MASK)
5096                 inta |= CSR_INT_BIT_FH_RX;
5097         if (inta_fh & CSR_FH_INT_TX_MASK)
5098                 inta |= CSR_INT_BIT_FH_TX;
5099
5100         /* Now service all interrupt bits discovered above. */
5101         if (inta & CSR_INT_BIT_HW_ERR) {
5102                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
5103
5104                 /* Tell the device to stop sending interrupts */
5105                 iwl4965_disable_interrupts(priv);
5106
5107                 iwl4965_irq_handle_error(priv);
5108
5109                 handled |= CSR_INT_BIT_HW_ERR;
5110
5111                 spin_unlock_irqrestore(&priv->lock, flags);
5112
5113                 return;
5114         }
5115
5116 #ifdef CONFIG_IWL4965_DEBUG
5117         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5118                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5119                 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5120                         IWL_DEBUG_ISR("Microcode started or stopped.\n");
5121
5122                 /* Alive notification via Rx interrupt will do the real work */
5123                 if (inta & CSR_INT_BIT_ALIVE)
5124                         IWL_DEBUG_ISR("Alive interrupt\n");
5125         }
5126 #endif
5127         /* Safely ignore these bits for debug checks below */
5128         inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5129
5130         /* HW RF KILL switch toggled */
5131         if (inta & CSR_INT_BIT_RF_KILL) {
5132                 int hw_rf_kill = 0;
5133                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5134                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5135                         hw_rf_kill = 1;
5136
5137                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5138                                 "RF_KILL bit toggled to %s.\n",
5139                                 hw_rf_kill ? "disable radio":"enable radio");
5140
5141                 /* Queue restart only if RF_KILL switch was set to "kill"
5142                  *   when we loaded driver, and is now set to "enable".
5143                  * After we're Alive, RF_KILL gets handled by
5144                  *   iwl_rx_card_state_notif() */
5145                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5146                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
5147                         queue_work(priv->workqueue, &priv->restart);
5148                 }
5149
5150                 handled |= CSR_INT_BIT_RF_KILL;
5151         }
5152
5153         /* Chip got too hot and stopped itself */
5154         if (inta & CSR_INT_BIT_CT_KILL) {
5155                 IWL_ERROR("Microcode CT kill error detected.\n");
5156                 handled |= CSR_INT_BIT_CT_KILL;
5157         }
5158
5159         /* Error detected by uCode */
5160         if (inta & CSR_INT_BIT_SW_ERR) {
5161                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
5162                           inta);
5163                 iwl4965_irq_handle_error(priv);
5164                 handled |= CSR_INT_BIT_SW_ERR;
5165         }
5166
5167         /* uCode wakes up after power-down sleep */
5168         if (inta & CSR_INT_BIT_WAKEUP) {
5169                 IWL_DEBUG_ISR("Wakeup interrupt\n");
5170                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5171                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5172                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5173                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5174                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5175                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5176                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5177
5178                 handled |= CSR_INT_BIT_WAKEUP;
5179         }
5180
5181         /* All uCode command responses, including Tx command responses,
5182          * Rx "responses" (frame-received notification), and other
5183          * notifications from uCode come through here*/
5184         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5185                 iwl4965_rx_handle(priv);
5186                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5187         }
5188
5189         if (inta & CSR_INT_BIT_FH_TX) {
5190                 IWL_DEBUG_ISR("Tx interrupt\n");
5191                 handled |= CSR_INT_BIT_FH_TX;
5192         }
5193
5194         if (inta & ~handled)
5195                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5196
5197         if (inta & ~CSR_INI_SET_MASK) {
5198                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5199                          inta & ~CSR_INI_SET_MASK);
5200                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
5201         }
5202
5203         /* Re-enable all interrupts */
5204         iwl4965_enable_interrupts(priv);
5205
5206 #ifdef CONFIG_IWL4965_DEBUG
5207         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5208                 inta = iwl4965_read32(priv, CSR_INT);
5209                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5210                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5211                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5212                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5213         }
5214 #endif
5215         spin_unlock_irqrestore(&priv->lock, flags);
5216 }
5217
5218 static irqreturn_t iwl4965_isr(int irq, void *data)
5219 {
5220         struct iwl4965_priv *priv = data;
5221         u32 inta, inta_mask;
5222         u32 inta_fh;
5223         if (!priv)
5224                 return IRQ_NONE;
5225
5226         spin_lock(&priv->lock);
5227
5228         /* Disable (but don't clear!) interrupts here to avoid
5229          *    back-to-back ISRs and sporadic interrupts from our NIC.
5230          * If we have something to service, the tasklet will re-enable ints.
5231          * If we *don't* have something, we'll re-enable before leaving here. */
5232         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
5233         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5234
5235         /* Discover which interrupts are active/pending */
5236         inta = iwl4965_read32(priv, CSR_INT);
5237         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5238
5239         /* Ignore interrupt if there's nothing in NIC to service.
5240          * This may be due to IRQ shared with another device,
5241          * or due to sporadic interrupts thrown from our NIC. */
5242         if (!inta && !inta_fh) {
5243                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5244                 goto none;
5245         }
5246
5247         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5248                 /* Hardware disappeared. It might have already raised
5249                  * an interrupt */
5250                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5251                 goto unplugged;
5252         }
5253
5254         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5255                       inta, inta_mask, inta_fh);
5256
5257         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5258         tasklet_schedule(&priv->irq_tasklet);
5259
5260  unplugged:
5261         spin_unlock(&priv->lock);
5262         return IRQ_HANDLED;
5263
5264  none:
5265         /* re-enable interrupts here since we don't have anything to service. */
5266         iwl4965_enable_interrupts(priv);
5267         spin_unlock(&priv->lock);
5268         return IRQ_NONE;
5269 }
5270
5271 /************************** EEPROM BANDS ****************************
5272  *
5273  * The iwl4965_eeprom_band definitions below provide the mapping from the
5274  * EEPROM contents to the specific channel number supported for each
5275  * band.
5276  *
5277  * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5278  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5279  * The specific geography and calibration information for that channel
5280  * is contained in the eeprom map itself.
5281  *
5282  * During init, we copy the eeprom information and channel map
5283  * information into priv->channel_info_24/52 and priv->channel_map_24/52
5284  *
5285  * channel_map_24/52 provides the index in the channel_info array for a
5286  * given channel.  We have to have two separate maps as there is channel
5287  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5288  * band_2
5289  *
5290  * A value of 0xff stored in the channel_map indicates that the channel
5291  * is not supported by the hardware at all.
5292  *
5293  * A value of 0xfe in the channel_map indicates that the channel is not
5294  * valid for Tx with the current hardware.  This means that
5295  * while the system can tune and receive on a given channel, it may not
5296  * be able to associate or transmit any frames on that
5297  * channel.  There is no corresponding channel information for that
5298  * entry.
5299  *
5300  *********************************************************************/
5301
5302 /* 2.4 GHz */
5303 static const u8 iwl4965_eeprom_band_1[14] = {
5304         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5305 };
5306
5307 /* 5.2 GHz bands */
5308 static const u8 iwl4965_eeprom_band_2[] = {     /* 4915-5080MHz */
5309         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5310 };
5311
5312 static const u8 iwl4965_eeprom_band_3[] = {     /* 5170-5320MHz */
5313         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5314 };
5315
5316 static const u8 iwl4965_eeprom_band_4[] = {     /* 5500-5700MHz */
5317         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5318 };
5319
5320 static const u8 iwl4965_eeprom_band_5[] = {     /* 5725-5825MHz */
5321         145, 149, 153, 157, 161, 165
5322 };
5323
5324 static u8 iwl4965_eeprom_band_6[] = {       /* 2.4 FAT channel */
5325         1, 2, 3, 4, 5, 6, 7
5326 };
5327
5328 static u8 iwl4965_eeprom_band_7[] = {       /* 5.2 FAT channel */
5329         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5330 };
5331
5332 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5333                                     int band,
5334                                     int *eeprom_ch_count,
5335                                     const struct iwl4965_eeprom_channel
5336                                     **eeprom_ch_info,
5337                                     const u8 **eeprom_ch_index)
5338 {
5339         switch (band) {
5340         case 1:         /* 2.4GHz band */
5341                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5342                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5343                 *eeprom_ch_index = iwl4965_eeprom_band_1;
5344                 break;
5345         case 2:         /* 4.9GHz band */
5346                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5347                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5348                 *eeprom_ch_index = iwl4965_eeprom_band_2;
5349                 break;
5350         case 3:         /* 5.2GHz band */
5351                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5352                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5353                 *eeprom_ch_index = iwl4965_eeprom_band_3;
5354                 break;
5355         case 4:         /* 5.5GHz band */
5356                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5357                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5358                 *eeprom_ch_index = iwl4965_eeprom_band_4;
5359                 break;
5360         case 5:         /* 5.7GHz band */
5361                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5362                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5363                 *eeprom_ch_index = iwl4965_eeprom_band_5;
5364                 break;
5365         case 6:         /* 2.4GHz FAT channels */
5366                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5367                 *eeprom_ch_info = priv->eeprom.band_24_channels;
5368                 *eeprom_ch_index = iwl4965_eeprom_band_6;
5369                 break;
5370         case 7:         /* 5 GHz FAT channels */
5371                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5372                 *eeprom_ch_info = priv->eeprom.band_52_channels;
5373                 *eeprom_ch_index = iwl4965_eeprom_band_7;
5374                 break;
5375         default:
5376                 BUG();
5377                 return;
5378         }
5379 }
5380
5381 /**
5382  * iwl4965_get_channel_info - Find driver's private channel info
5383  *
5384  * Based on band and channel number.
5385  */
5386 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5387                                                     int phymode, u16 channel)
5388 {
5389         int i;
5390
5391         switch (phymode) {
5392         case MODE_IEEE80211A:
5393                 for (i = 14; i < priv->channel_count; i++) {
5394                         if (priv->channel_info[i].channel == channel)
5395                                 return &priv->channel_info[i];
5396                 }
5397                 break;
5398
5399         case MODE_IEEE80211B:
5400         case MODE_IEEE80211G:
5401                 if (channel >= 1 && channel <= 14)
5402                         return &priv->channel_info[channel - 1];
5403                 break;
5404
5405         }
5406
5407         return NULL;
5408 }
5409
5410 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5411                             ? # x " " : "")
5412
5413 /**
5414  * iwl4965_init_channel_map - Set up driver's info for all possible channels
5415  */
5416 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5417 {
5418         int eeprom_ch_count = 0;
5419         const u8 *eeprom_ch_index = NULL;
5420         const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5421         int band, ch;
5422         struct iwl4965_channel_info *ch_info;
5423
5424         if (priv->channel_count) {
5425                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5426                 return 0;
5427         }
5428
5429         if (priv->eeprom.version < 0x2f) {
5430                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5431                             priv->eeprom.version);
5432                 return -EINVAL;
5433         }
5434
5435         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5436
5437         priv->channel_count =
5438             ARRAY_SIZE(iwl4965_eeprom_band_1) +
5439             ARRAY_SIZE(iwl4965_eeprom_band_2) +
5440             ARRAY_SIZE(iwl4965_eeprom_band_3) +
5441             ARRAY_SIZE(iwl4965_eeprom_band_4) +
5442             ARRAY_SIZE(iwl4965_eeprom_band_5);
5443
5444         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5445
5446         priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5447                                      priv->channel_count, GFP_KERNEL);
5448         if (!priv->channel_info) {
5449                 IWL_ERROR("Could not allocate channel_info\n");
5450                 priv->channel_count = 0;
5451                 return -ENOMEM;
5452         }
5453
5454         ch_info = priv->channel_info;
5455
5456         /* Loop through the 5 EEPROM bands adding them in order to the
5457          * channel map we maintain (that contains additional information than
5458          * what just in the EEPROM) */
5459         for (band = 1; band <= 5; band++) {
5460
5461                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5462                                         &eeprom_ch_info, &eeprom_ch_index);
5463
5464                 /* Loop through each band adding each of the channels */
5465                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5466                         ch_info->channel = eeprom_ch_index[ch];
5467                         ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5468                             MODE_IEEE80211A;
5469
5470                         /* permanently store EEPROM's channel regulatory flags
5471                          *   and max power in channel info database. */
5472                         ch_info->eeprom = eeprom_ch_info[ch];
5473
5474                         /* Copy the run-time flags so they are there even on
5475                          * invalid channels */
5476                         ch_info->flags = eeprom_ch_info[ch].flags;
5477
5478                         if (!(is_channel_valid(ch_info))) {
5479                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5480                                                "No traffic\n",
5481                                                ch_info->channel,
5482                                                ch_info->flags,
5483                                                is_channel_a_band(ch_info) ?
5484                                                "5.2" : "2.4");
5485                                 ch_info++;
5486                                 continue;
5487                         }
5488
5489                         /* Initialize regulatory-based run-time data */
5490                         ch_info->max_power_avg = ch_info->curr_txpow =
5491                             eeprom_ch_info[ch].max_power_avg;
5492                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5493                         ch_info->min_power = 0;
5494
5495                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5496                                        " %ddBm): Ad-Hoc %ssupported\n",
5497                                        ch_info->channel,
5498                                        is_channel_a_band(ch_info) ?
5499                                        "5.2" : "2.4",
5500                                        CHECK_AND_PRINT(IBSS),
5501                                        CHECK_AND_PRINT(ACTIVE),
5502                                        CHECK_AND_PRINT(RADAR),
5503                                        CHECK_AND_PRINT(WIDE),
5504                                        CHECK_AND_PRINT(NARROW),
5505                                        CHECK_AND_PRINT(DFS),
5506                                        eeprom_ch_info[ch].flags,
5507                                        eeprom_ch_info[ch].max_power_avg,
5508                                        ((eeprom_ch_info[ch].
5509                                          flags & EEPROM_CHANNEL_IBSS)
5510                                         && !(eeprom_ch_info[ch].
5511                                              flags & EEPROM_CHANNEL_RADAR))
5512                                        ? "" : "not ");
5513
5514                         /* Set the user_txpower_limit to the highest power
5515                          * supported by any channel */
5516                         if (eeprom_ch_info[ch].max_power_avg >
5517                             priv->user_txpower_limit)
5518                                 priv->user_txpower_limit =
5519                                     eeprom_ch_info[ch].max_power_avg;
5520
5521                         ch_info++;
5522                 }
5523         }
5524
5525         /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5526         for (band = 6; band <= 7; band++) {
5527                 int phymode;
5528                 u8 fat_extension_chan;
5529
5530                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5531                                         &eeprom_ch_info, &eeprom_ch_index);
5532
5533                 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5534                 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5535
5536                 /* Loop through each band adding each of the channels */
5537                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5538
5539                         if ((band == 6) &&
5540                             ((eeprom_ch_index[ch] == 5) ||
5541                             (eeprom_ch_index[ch] == 6) ||
5542                             (eeprom_ch_index[ch] == 7)))
5543                                fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5544                         else
5545                                 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5546
5547                         /* Set up driver's info for lower half */
5548                         iwl4965_set_fat_chan_info(priv, phymode,
5549                                                   eeprom_ch_index[ch],
5550                                                   &(eeprom_ch_info[ch]),
5551                                                   fat_extension_chan);
5552
5553                         /* Set up driver's info for upper half */
5554                         iwl4965_set_fat_chan_info(priv, phymode,
5555                                                   (eeprom_ch_index[ch] + 4),
5556                                                   &(eeprom_ch_info[ch]),
5557                                                   HT_IE_EXT_CHANNEL_BELOW);
5558                 }
5559         }
5560
5561         return 0;
5562 }
5563
5564 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5565  * sending probe req.  This should be set long enough to hear probe responses
5566  * from more than one AP.  */
5567 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5568 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5569
5570 /* For faster active scanning, scan will move to the next channel if fewer than
5571  * PLCP_QUIET_THRESH packets are heard on this channel within
5572  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5573  * time if it's a quiet channel (nothing responded to our probe, and there's
5574  * no other traffic).
5575  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5576 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5577 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5578
5579 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5580  * Must be set longer than active dwell time.
5581  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5582 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5583 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5584 #define IWL_PASSIVE_DWELL_BASE      (100)
5585 #define IWL_CHANNEL_TUNE_TIME       5
5586
5587 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv, int phymode)
5588 {
5589         if (phymode == MODE_IEEE80211A)
5590                 return IWL_ACTIVE_DWELL_TIME_52;
5591         else
5592                 return IWL_ACTIVE_DWELL_TIME_24;
5593 }
5594
5595 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv, int phymode)
5596 {
5597         u16 active = iwl4965_get_active_dwell_time(priv, phymode);
5598         u16 passive = (phymode != MODE_IEEE80211A) ?
5599             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5600             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5601
5602         if (iwl4965_is_associated(priv)) {
5603                 /* If we're associated, we clamp the maximum passive
5604                  * dwell time to be 98% of the beacon interval (minus
5605                  * 2 * channel tune time) */
5606                 passive = priv->beacon_int;
5607                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5608                         passive = IWL_PASSIVE_DWELL_BASE;
5609                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5610         }
5611
5612         if (passive <= active)
5613                 passive = active + 1;
5614
5615         return passive;
5616 }
5617
5618 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv, int phymode,
5619                                      u8 is_active, u8 direct_mask,
5620                                      struct iwl4965_scan_channel *scan_ch)
5621 {
5622         const struct ieee80211_channel *channels = NULL;
5623         const struct ieee80211_hw_mode *hw_mode;
5624         const struct iwl4965_channel_info *ch_info;
5625         u16 passive_dwell = 0;
5626         u16 active_dwell = 0;
5627         int added, i;
5628
5629         hw_mode = iwl4965_get_hw_mode(priv, phymode);
5630         if (!hw_mode)
5631                 return 0;
5632
5633         channels = hw_mode->channels;
5634
5635         active_dwell = iwl4965_get_active_dwell_time(priv, phymode);
5636         passive_dwell = iwl4965_get_passive_dwell_time(priv, phymode);
5637
5638         for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5639                 if (channels[i].chan ==
5640                     le16_to_cpu(priv->active_rxon.channel)) {
5641                         if (iwl4965_is_associated(priv)) {
5642                                 IWL_DEBUG_SCAN
5643                                     ("Skipping current channel %d\n",
5644                                      le16_to_cpu(priv->active_rxon.channel));
5645                                 continue;
5646                         }
5647                 } else if (priv->only_active_channel)
5648                         continue;
5649
5650                 scan_ch->channel = channels[i].chan;
5651
5652                 ch_info = iwl4965_get_channel_info(priv, phymode,
5653                                          scan_ch->channel);
5654                 if (!is_channel_valid(ch_info)) {
5655                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5656                                        scan_ch->channel);
5657                         continue;
5658                 }
5659
5660                 if (!is_active || is_channel_passive(ch_info) ||
5661                     !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5662                         scan_ch->type = 0;      /* passive */
5663                 else
5664                         scan_ch->type = 1;      /* active */
5665
5666                 if (scan_ch->type & 1)
5667                         scan_ch->type |= (direct_mask << 1);
5668
5669                 if (is_channel_narrow(ch_info))
5670                         scan_ch->type |= (1 << 7);
5671
5672                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5673                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5674
5675                 /* Set txpower levels to defaults */
5676                 scan_ch->tpc.dsp_atten = 110;
5677                 /* scan_pwr_info->tpc.dsp_atten; */
5678
5679                 /*scan_pwr_info->tpc.tx_gain; */
5680                 if (phymode == MODE_IEEE80211A)
5681                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5682                 else {
5683                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5684                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5685                          * power level:
5686                          * scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5687                          */
5688                 }
5689
5690                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5691                                scan_ch->channel,
5692                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5693                                (scan_ch->type & 1) ?
5694                                active_dwell : passive_dwell);
5695
5696                 scan_ch++;
5697                 added++;
5698         }
5699
5700         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5701         return added;
5702 }
5703
5704 static void iwl4965_reset_channel_flag(struct iwl4965_priv *priv)
5705 {
5706         int i, j;
5707         for (i = 0; i < 3; i++) {
5708                 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5709                 for (j = 0; j < hw_mode->num_channels; j++)
5710                         hw_mode->channels[j].flag = hw_mode->channels[j].val;
5711         }
5712 }
5713
5714 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5715                               struct ieee80211_rate *rates)
5716 {
5717         int i;
5718
5719         for (i = 0; i < IWL_RATE_COUNT; i++) {
5720                 rates[i].rate = iwl4965_rates[i].ieee * 5;
5721                 rates[i].val = i; /* Rate scaling will work on indexes */
5722                 rates[i].val2 = i;
5723                 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5724                 /* Only OFDM have the bits-per-symbol set */
5725                 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5726                         rates[i].flags |= IEEE80211_RATE_OFDM;
5727                 else {
5728                         /*
5729                          * If CCK 1M then set rate flag to CCK else CCK_2
5730                          * which is CCK | PREAMBLE2
5731                          */
5732                         rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5733                                 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5734                 }
5735
5736                 /* Set up which ones are basic rates... */
5737                 if (IWL_BASIC_RATES_MASK & (1 << i))
5738                         rates[i].flags |= IEEE80211_RATE_BASIC;
5739         }
5740 }
5741
5742 /**
5743  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5744  */
5745 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5746 {
5747         struct iwl4965_channel_info *ch;
5748         struct ieee80211_hw_mode *modes;
5749         struct ieee80211_channel *channels;
5750         struct ieee80211_channel *geo_ch;
5751         struct ieee80211_rate *rates;
5752         int i = 0;
5753         enum {
5754                 A = 0,
5755                 B = 1,
5756                 G = 2,
5757         };
5758         int mode_count = 3;
5759
5760         if (priv->modes) {
5761                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5762                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5763                 return 0;
5764         }
5765
5766         modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5767                         GFP_KERNEL);
5768         if (!modes)
5769                 return -ENOMEM;
5770
5771         channels = kzalloc(sizeof(struct ieee80211_channel) *
5772                            priv->channel_count, GFP_KERNEL);
5773         if (!channels) {
5774                 kfree(modes);
5775                 return -ENOMEM;
5776         }
5777
5778         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5779                         GFP_KERNEL);
5780         if (!rates) {
5781                 kfree(modes);
5782                 kfree(channels);
5783                 return -ENOMEM;
5784         }
5785
5786         /* 0 = 802.11a
5787          * 1 = 802.11b
5788          * 2 = 802.11g
5789          */
5790
5791         /* 5.2GHz channels start after the 2.4GHz channels */
5792         modes[A].mode = MODE_IEEE80211A;
5793         modes[A].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5794         modes[A].rates = rates;
5795         modes[A].num_rates = 8; /* just OFDM */
5796         modes[A].rates = &rates[4];
5797         modes[A].num_channels = 0;
5798 #ifdef CONFIG_IWL4965_HT
5799         iwl4965_init_ht_hw_capab(&modes[A].ht_info, MODE_IEEE80211A);
5800 #endif
5801
5802         modes[B].mode = MODE_IEEE80211B;
5803         modes[B].channels = channels;
5804         modes[B].rates = rates;
5805         modes[B].num_rates = 4; /* just CCK */
5806         modes[B].num_channels = 0;
5807
5808         modes[G].mode = MODE_IEEE80211G;
5809         modes[G].channels = channels;
5810         modes[G].rates = rates;
5811         modes[G].num_rates = 12;        /* OFDM & CCK */
5812         modes[G].num_channels = 0;
5813 #ifdef CONFIG_IWL4965_HT
5814         iwl4965_init_ht_hw_capab(&modes[G].ht_info, MODE_IEEE80211G);
5815 #endif
5816
5817         priv->ieee_channels = channels;
5818         priv->ieee_rates = rates;
5819
5820         iwl4965_init_hw_rates(priv, rates);
5821
5822         for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5823                 ch = &priv->channel_info[i];
5824
5825                 if (!is_channel_valid(ch)) {
5826                         IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5827                                     "skipping.\n",
5828                                     ch->channel, is_channel_a_band(ch) ?
5829                                     "5.2" : "2.4");
5830                         continue;
5831                 }
5832
5833                 if (is_channel_a_band(ch)) {
5834                         geo_ch = &modes[A].channels[modes[A].num_channels++];
5835                 } else {
5836                         geo_ch = &modes[B].channels[modes[B].num_channels++];
5837                         modes[G].num_channels++;
5838                 }
5839
5840                 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5841                 geo_ch->chan = ch->channel;
5842                 geo_ch->power_level = ch->max_power_avg;
5843                 geo_ch->antenna_max = 0xff;
5844
5845                 if (is_channel_valid(ch)) {
5846                         geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5847                         if (ch->flags & EEPROM_CHANNEL_IBSS)
5848                                 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5849
5850                         if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5851                                 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5852
5853                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5854                                 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5855
5856                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5857                                 priv->max_channel_txpower_limit =
5858                                     ch->max_power_avg;
5859                 }
5860
5861                 geo_ch->val = geo_ch->flag;
5862         }
5863
5864         if ((modes[A].num_channels == 0) && priv->is_abg) {
5865                 printk(KERN_INFO DRV_NAME
5866                        ": Incorrectly detected BG card as ABG.  Please send "
5867                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5868                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5869                 priv->is_abg = 0;
5870         }
5871
5872         printk(KERN_INFO DRV_NAME
5873                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5874                modes[G].num_channels, modes[A].num_channels);
5875
5876         /*
5877          * NOTE:  We register these in preference of order -- the
5878          * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5879          * a phymode based on rates or AP capabilities but seems to
5880          * configure it purely on if the channel being configured
5881          * is supported by a mode -- and the first match is taken
5882          */
5883
5884         if (modes[G].num_channels)
5885                 ieee80211_register_hwmode(priv->hw, &modes[G]);
5886         if (modes[B].num_channels)
5887                 ieee80211_register_hwmode(priv->hw, &modes[B]);
5888         if (modes[A].num_channels)
5889                 ieee80211_register_hwmode(priv->hw, &modes[A]);
5890
5891         priv->modes = modes;
5892         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5893
5894         return 0;
5895 }
5896
5897 /******************************************************************************
5898  *
5899  * uCode download functions
5900  *
5901  ******************************************************************************/
5902
5903 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5904 {
5905         if (priv->ucode_code.v_addr != NULL) {
5906                 pci_free_consistent(priv->pci_dev,
5907                                     priv->ucode_code.len,
5908                                     priv->ucode_code.v_addr,
5909                                     priv->ucode_code.p_addr);
5910                 priv->ucode_code.v_addr = NULL;
5911         }
5912         if (priv->ucode_data.v_addr != NULL) {
5913                 pci_free_consistent(priv->pci_dev,
5914                                     priv->ucode_data.len,
5915                                     priv->ucode_data.v_addr,
5916                                     priv->ucode_data.p_addr);
5917                 priv->ucode_data.v_addr = NULL;
5918         }
5919         if (priv->ucode_data_backup.v_addr != NULL) {
5920                 pci_free_consistent(priv->pci_dev,
5921                                     priv->ucode_data_backup.len,
5922                                     priv->ucode_data_backup.v_addr,
5923                                     priv->ucode_data_backup.p_addr);
5924                 priv->ucode_data_backup.v_addr = NULL;
5925         }
5926         if (priv->ucode_init.v_addr != NULL) {
5927                 pci_free_consistent(priv->pci_dev,
5928                                     priv->ucode_init.len,
5929                                     priv->ucode_init.v_addr,
5930                                     priv->ucode_init.p_addr);
5931                 priv->ucode_init.v_addr = NULL;
5932         }
5933         if (priv->ucode_init_data.v_addr != NULL) {
5934                 pci_free_consistent(priv->pci_dev,
5935                                     priv->ucode_init_data.len,
5936                                     priv->ucode_init_data.v_addr,
5937                                     priv->ucode_init_data.p_addr);
5938                 priv->ucode_init_data.v_addr = NULL;
5939         }
5940         if (priv->ucode_boot.v_addr != NULL) {
5941                 pci_free_consistent(priv->pci_dev,
5942                                     priv->ucode_boot.len,
5943                                     priv->ucode_boot.v_addr,
5944                                     priv->ucode_boot.p_addr);
5945                 priv->ucode_boot.v_addr = NULL;
5946         }
5947 }
5948
5949 /**
5950  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5951  *     looking at all data.
5952  */
5953 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 *image,
5954                                  u32 len)
5955 {
5956         u32 val;
5957         u32 save_len = len;
5958         int rc = 0;
5959         u32 errcnt;
5960
5961         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5962
5963         rc = iwl4965_grab_nic_access(priv);
5964         if (rc)
5965                 return rc;
5966
5967         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5968
5969         errcnt = 0;
5970         for (; len > 0; len -= sizeof(u32), image++) {
5971                 /* read data comes through single port, auto-incr addr */
5972                 /* NOTE: Use the debugless read so we don't flood kernel log
5973                  * if IWL_DL_IO is set */
5974                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5975                 if (val != le32_to_cpu(*image)) {
5976                         IWL_ERROR("uCode INST section is invalid at "
5977                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5978                                   save_len - len, val, le32_to_cpu(*image));
5979                         rc = -EIO;
5980                         errcnt++;
5981                         if (errcnt >= 20)
5982                                 break;
5983                 }
5984         }
5985
5986         iwl4965_release_nic_access(priv);
5987
5988         if (!errcnt)
5989                 IWL_DEBUG_INFO
5990                     ("ucode image in INSTRUCTION memory is good\n");
5991
5992         return rc;
5993 }
5994
5995
5996 /**
5997  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5998  *   using sample data 100 bytes apart.  If these sample points are good,
5999  *   it's a pretty good bet that everything between them is good, too.
6000  */
6001 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
6002 {
6003         u32 val;
6004         int rc = 0;
6005         u32 errcnt = 0;
6006         u32 i;
6007
6008         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6009
6010         rc = iwl4965_grab_nic_access(priv);
6011         if (rc)
6012                 return rc;
6013
6014         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
6015                 /* read data comes through single port, auto-incr addr */
6016                 /* NOTE: Use the debugless read so we don't flood kernel log
6017                  * if IWL_DL_IO is set */
6018                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
6019                         i + RTC_INST_LOWER_BOUND);
6020                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6021                 if (val != le32_to_cpu(*image)) {
6022 #if 0 /* Enable this if you want to see details */
6023                         IWL_ERROR("uCode INST section is invalid at "
6024                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
6025                                   i, val, *image);
6026 #endif
6027                         rc = -EIO;
6028                         errcnt++;
6029                         if (errcnt >= 3)
6030                                 break;
6031                 }
6032         }
6033
6034         iwl4965_release_nic_access(priv);
6035
6036         return rc;
6037 }
6038
6039
6040 /**
6041  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
6042  *    and verify its contents
6043  */
6044 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
6045 {
6046         __le32 *image;
6047         u32 len;
6048         int rc = 0;
6049
6050         /* Try bootstrap */
6051         image = (__le32 *)priv->ucode_boot.v_addr;
6052         len = priv->ucode_boot.len;
6053         rc = iwl4965_verify_inst_sparse(priv, image, len);
6054         if (rc == 0) {
6055                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
6056                 return 0;
6057         }
6058
6059         /* Try initialize */
6060         image = (__le32 *)priv->ucode_init.v_addr;
6061         len = priv->ucode_init.len;
6062         rc = iwl4965_verify_inst_sparse(priv, image, len);
6063         if (rc == 0) {
6064                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
6065                 return 0;
6066         }
6067
6068         /* Try runtime/protocol */
6069         image = (__le32 *)priv->ucode_code.v_addr;
6070         len = priv->ucode_code.len;
6071         rc = iwl4965_verify_inst_sparse(priv, image, len);
6072         if (rc == 0) {
6073                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
6074                 return 0;
6075         }
6076
6077         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
6078
6079         /* Since nothing seems to match, show first several data entries in
6080          * instruction SRAM, so maybe visual inspection will give a clue.
6081          * Selection of bootstrap image (vs. other images) is arbitrary. */
6082         image = (__le32 *)priv->ucode_boot.v_addr;
6083         len = priv->ucode_boot.len;
6084         rc = iwl4965_verify_inst_full(priv, image, len);
6085
6086         return rc;
6087 }
6088
6089
6090 /* check contents of special bootstrap uCode SRAM */
6091 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
6092 {
6093         __le32 *image = priv->ucode_boot.v_addr;
6094         u32 len = priv->ucode_boot.len;
6095         u32 reg;
6096         u32 val;
6097
6098         IWL_DEBUG_INFO("Begin verify bsm\n");
6099
6100         /* verify BSM SRAM contents */
6101         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6102         for (reg = BSM_SRAM_LOWER_BOUND;
6103              reg < BSM_SRAM_LOWER_BOUND + len;
6104              reg += sizeof(u32), image ++) {
6105                 val = iwl4965_read_prph(priv, reg);
6106                 if (val != le32_to_cpu(*image)) {
6107                         IWL_ERROR("BSM uCode verification failed at "
6108                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6109                                   BSM_SRAM_LOWER_BOUND,
6110                                   reg - BSM_SRAM_LOWER_BOUND, len,
6111                                   val, le32_to_cpu(*image));
6112                         return -EIO;
6113                 }
6114         }
6115
6116         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6117
6118         return 0;
6119 }
6120
6121 /**
6122  * iwl4965_load_bsm - Load bootstrap instructions
6123  *
6124  * BSM operation:
6125  *
6126  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6127  * in special SRAM that does not power down during RFKILL.  When powering back
6128  * up after power-saving sleeps (or during initial uCode load), the BSM loads
6129  * the bootstrap program into the on-board processor, and starts it.
6130  *
6131  * The bootstrap program loads (via DMA) instructions and data for a new
6132  * program from host DRAM locations indicated by the host driver in the
6133  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
6134  * automatically.
6135  *
6136  * When initializing the NIC, the host driver points the BSM to the
6137  * "initialize" uCode image.  This uCode sets up some internal data, then
6138  * notifies host via "initialize alive" that it is complete.
6139  *
6140  * The host then replaces the BSM_DRAM_* pointer values to point to the
6141  * normal runtime uCode instructions and a backup uCode data cache buffer
6142  * (filled initially with starting data values for the on-board processor),
6143  * then triggers the "initialize" uCode to load and launch the runtime uCode,
6144  * which begins normal operation.
6145  *
6146  * When doing a power-save shutdown, runtime uCode saves data SRAM into
6147  * the backup data cache in DRAM before SRAM is powered down.
6148  *
6149  * When powering back up, the BSM loads the bootstrap program.  This reloads
6150  * the runtime uCode instructions and the backup data cache into SRAM,
6151  * and re-launches the runtime uCode from where it left off.
6152  */
6153 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6154 {
6155         __le32 *image = priv->ucode_boot.v_addr;
6156         u32 len = priv->ucode_boot.len;
6157         dma_addr_t pinst;
6158         dma_addr_t pdata;
6159         u32 inst_len;
6160         u32 data_len;
6161         int rc;
6162         int i;
6163         u32 done;
6164         u32 reg_offset;
6165
6166         IWL_DEBUG_INFO("Begin load bsm\n");
6167
6168         /* make sure bootstrap program is no larger than BSM's SRAM size */
6169         if (len > IWL_MAX_BSM_SIZE)
6170                 return -EINVAL;
6171
6172         /* Tell bootstrap uCode where to find the "Initialize" uCode
6173          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
6174          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
6175          *        after the "initialize" uCode has run, to point to
6176          *        runtime/protocol instructions and backup data cache. */
6177         pinst = priv->ucode_init.p_addr >> 4;
6178         pdata = priv->ucode_init_data.p_addr >> 4;
6179         inst_len = priv->ucode_init.len;
6180         data_len = priv->ucode_init_data.len;
6181
6182         rc = iwl4965_grab_nic_access(priv);
6183         if (rc)
6184                 return rc;
6185
6186         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6187         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6188         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6189         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6190
6191         /* Fill BSM memory with bootstrap instructions */
6192         for (reg_offset = BSM_SRAM_LOWER_BOUND;
6193              reg_offset < BSM_SRAM_LOWER_BOUND + len;
6194              reg_offset += sizeof(u32), image++)
6195                 _iwl4965_write_prph(priv, reg_offset,
6196                                           le32_to_cpu(*image));
6197
6198         rc = iwl4965_verify_bsm(priv);
6199         if (rc) {
6200                 iwl4965_release_nic_access(priv);
6201                 return rc;
6202         }
6203
6204         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6205         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6206         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6207                                  RTC_INST_LOWER_BOUND);
6208         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6209
6210         /* Load bootstrap code into instruction SRAM now,
6211          *   to prepare to load "initialize" uCode */
6212         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6213                 BSM_WR_CTRL_REG_BIT_START);
6214
6215         /* Wait for load of bootstrap uCode to finish */
6216         for (i = 0; i < 100; i++) {
6217                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6218                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6219                         break;
6220                 udelay(10);
6221         }
6222         if (i < 100)
6223                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6224         else {
6225                 IWL_ERROR("BSM write did not complete!\n");
6226                 return -EIO;
6227         }
6228
6229         /* Enable future boot loads whenever power management unit triggers it
6230          *   (e.g. when powering back up after power-save shutdown) */
6231         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6232                 BSM_WR_CTRL_REG_BIT_START_EN);
6233
6234         iwl4965_release_nic_access(priv);
6235
6236         return 0;
6237 }
6238
6239 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6240 {
6241         /* Remove all resets to allow NIC to operate */
6242         iwl4965_write32(priv, CSR_RESET, 0);
6243 }
6244
6245 static int iwl4965_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
6246 {
6247         desc->v_addr = pci_alloc_consistent(pci_dev, desc->len, &desc->p_addr);
6248         return (desc->v_addr != NULL) ? 0 : -ENOMEM;
6249 }
6250
6251 /**
6252  * iwl4965_read_ucode - Read uCode images from disk file.
6253  *
6254  * Copy into buffers for card to fetch via bus-mastering
6255  */
6256 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6257 {
6258         struct iwl4965_ucode *ucode;
6259         int ret;
6260         const struct firmware *ucode_raw;
6261         const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6262         u8 *src;
6263         size_t len;
6264         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6265
6266         /* Ask kernel firmware_class module to get the boot firmware off disk.
6267          * request_firmware() is synchronous, file is in memory on return. */
6268         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6269         if (ret < 0) {
6270                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6271                                         name, ret);
6272                 goto error;
6273         }
6274
6275         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6276                        name, ucode_raw->size);
6277
6278         /* Make sure that we got at least our header! */
6279         if (ucode_raw->size < sizeof(*ucode)) {
6280                 IWL_ERROR("File size way too small!\n");
6281                 ret = -EINVAL;
6282                 goto err_release;
6283         }
6284
6285         /* Data from ucode file:  header followed by uCode images */
6286         ucode = (void *)ucode_raw->data;
6287
6288         ver = le32_to_cpu(ucode->ver);
6289         inst_size = le32_to_cpu(ucode->inst_size);
6290         data_size = le32_to_cpu(ucode->data_size);
6291         init_size = le32_to_cpu(ucode->init_size);
6292         init_data_size = le32_to_cpu(ucode->init_data_size);
6293         boot_size = le32_to_cpu(ucode->boot_size);
6294
6295         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6296         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6297                        inst_size);
6298         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6299                        data_size);
6300         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6301                        init_size);
6302         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6303                        init_data_size);
6304         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6305                        boot_size);
6306
6307         /* Verify size of file vs. image size info in file's header */
6308         if (ucode_raw->size < sizeof(*ucode) +
6309                 inst_size + data_size + init_size +
6310                 init_data_size + boot_size) {
6311
6312                 IWL_DEBUG_INFO("uCode file size %d too small\n",
6313                                (int)ucode_raw->size);
6314                 ret = -EINVAL;
6315                 goto err_release;
6316         }
6317
6318         /* Verify that uCode images will fit in card's SRAM */
6319         if (inst_size > IWL_MAX_INST_SIZE) {
6320                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6321                                inst_size);
6322                 ret = -EINVAL;
6323                 goto err_release;
6324         }
6325
6326         if (data_size > IWL_MAX_DATA_SIZE) {
6327                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6328                                 data_size);
6329                 ret = -EINVAL;
6330                 goto err_release;
6331         }
6332         if (init_size > IWL_MAX_INST_SIZE) {
6333                 IWL_DEBUG_INFO
6334                     ("uCode init instr len %d too large to fit in\n",
6335                       init_size);
6336                 ret = -EINVAL;
6337                 goto err_release;
6338         }
6339         if (init_data_size > IWL_MAX_DATA_SIZE) {
6340                 IWL_DEBUG_INFO
6341                     ("uCode init data len %d too large to fit in\n",
6342                       init_data_size);
6343                 ret = -EINVAL;
6344                 goto err_release;
6345         }
6346         if (boot_size > IWL_MAX_BSM_SIZE) {
6347                 IWL_DEBUG_INFO
6348                     ("uCode boot instr len %d too large to fit in\n",
6349                       boot_size);
6350                 ret = -EINVAL;
6351                 goto err_release;
6352         }
6353
6354         /* Allocate ucode buffers for card's bus-master loading ... */
6355
6356         /* Runtime instructions and 2 copies of data:
6357          * 1) unmodified from disk
6358          * 2) backup cache for save/restore during power-downs */
6359         priv->ucode_code.len = inst_size;
6360         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6361
6362         priv->ucode_data.len = data_size;
6363         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6364
6365         priv->ucode_data_backup.len = data_size;
6366         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6367
6368         /* Initialization instructions and data */
6369         if (init_size && init_data_size) {
6370                 priv->ucode_init.len = init_size;
6371                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6372
6373                 priv->ucode_init_data.len = init_data_size;
6374                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6375
6376                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6377                         goto err_pci_alloc;
6378         }
6379
6380         /* Bootstrap (instructions only, no data) */
6381         if (boot_size) {
6382                 priv->ucode_boot.len = boot_size;
6383                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6384
6385                 if (!priv->ucode_boot.v_addr)
6386                         goto err_pci_alloc;
6387         }
6388
6389         /* Copy images into buffers for card's bus-master reads ... */
6390
6391         /* Runtime instructions (first block of data in file) */
6392         src = &ucode->data[0];
6393         len = priv->ucode_code.len;
6394         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6395         memcpy(priv->ucode_code.v_addr, src, len);
6396         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6397                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6398
6399         /* Runtime data (2nd block)
6400          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
6401         src = &ucode->data[inst_size];
6402         len = priv->ucode_data.len;
6403         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6404         memcpy(priv->ucode_data.v_addr, src, len);
6405         memcpy(priv->ucode_data_backup.v_addr, src, len);
6406
6407         /* Initialization instructions (3rd block) */
6408         if (init_size) {
6409                 src = &ucode->data[inst_size + data_size];
6410                 len = priv->ucode_init.len;
6411                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6412                                 len);
6413                 memcpy(priv->ucode_init.v_addr, src, len);
6414         }
6415
6416         /* Initialization data (4th block) */
6417         if (init_data_size) {
6418                 src = &ucode->data[inst_size + data_size + init_size];
6419                 len = priv->ucode_init_data.len;
6420                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6421                                len);
6422                 memcpy(priv->ucode_init_data.v_addr, src, len);
6423         }
6424
6425         /* Bootstrap instructions (5th block) */
6426         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6427         len = priv->ucode_boot.len;
6428         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6429         memcpy(priv->ucode_boot.v_addr, src, len);
6430
6431         /* We have our copies now, allow OS release its copies */
6432         release_firmware(ucode_raw);
6433         return 0;
6434
6435  err_pci_alloc:
6436         IWL_ERROR("failed to allocate pci memory\n");
6437         ret = -ENOMEM;
6438         iwl4965_dealloc_ucode_pci(priv);
6439
6440  err_release:
6441         release_firmware(ucode_raw);
6442
6443  error:
6444         return ret;
6445 }
6446
6447
6448 /**
6449  * iwl4965_set_ucode_ptrs - Set uCode address location
6450  *
6451  * Tell initialization uCode where to find runtime uCode.
6452  *
6453  * BSM registers initially contain pointers to initialization uCode.
6454  * We need to replace them to load runtime uCode inst and data,
6455  * and to save runtime data when powering down.
6456  */
6457 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6458 {
6459         dma_addr_t pinst;
6460         dma_addr_t pdata;
6461         int rc = 0;
6462         unsigned long flags;
6463
6464         /* bits 35:4 for 4965 */
6465         pinst = priv->ucode_code.p_addr >> 4;
6466         pdata = priv->ucode_data_backup.p_addr >> 4;
6467
6468         spin_lock_irqsave(&priv->lock, flags);
6469         rc = iwl4965_grab_nic_access(priv);
6470         if (rc) {
6471                 spin_unlock_irqrestore(&priv->lock, flags);
6472                 return rc;
6473         }
6474
6475         /* Tell bootstrap uCode where to find image to load */
6476         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6477         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6478         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6479                                  priv->ucode_data.len);
6480
6481         /* Inst bytecount must be last to set up, bit 31 signals uCode
6482          *   that all new ptr/size info is in place */
6483         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6484                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6485
6486         iwl4965_release_nic_access(priv);
6487
6488         spin_unlock_irqrestore(&priv->lock, flags);
6489
6490         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6491
6492         return rc;
6493 }
6494
6495 /**
6496  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6497  *
6498  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6499  *
6500  * The 4965 "initialize" ALIVE reply contains calibration data for:
6501  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
6502  *   (3945 does not contain this data).
6503  *
6504  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6505 */
6506 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6507 {
6508         /* Check alive response for "valid" sign from uCode */
6509         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6510                 /* We had an error bringing up the hardware, so take it
6511                  * all the way back down so we can try again */
6512                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6513                 goto restart;
6514         }
6515
6516         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6517          * This is a paranoid check, because we would not have gotten the
6518          * "initialize" alive if code weren't properly loaded.  */
6519         if (iwl4965_verify_ucode(priv)) {
6520                 /* Runtime instruction load was bad;
6521                  * take it all the way back down so we can try again */
6522                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6523                 goto restart;
6524         }
6525
6526         /* Calculate temperature */
6527         priv->temperature = iwl4965_get_temperature(priv);
6528
6529         /* Send pointers to protocol/runtime uCode image ... init code will
6530          * load and launch runtime uCode, which will send us another "Alive"
6531          * notification. */
6532         IWL_DEBUG_INFO("Initialization Alive received.\n");
6533         if (iwl4965_set_ucode_ptrs(priv)) {
6534                 /* Runtime instruction load won't happen;
6535                  * take it all the way back down so we can try again */
6536                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6537                 goto restart;
6538         }
6539         return;
6540
6541  restart:
6542         queue_work(priv->workqueue, &priv->restart);
6543 }
6544
6545
6546 /**
6547  * iwl4965_alive_start - called after REPLY_ALIVE notification received
6548  *                   from protocol/runtime uCode (initialization uCode's
6549  *                   Alive gets handled by iwl4965_init_alive_start()).
6550  */
6551 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6552 {
6553         int rc = 0;
6554
6555         IWL_DEBUG_INFO("Runtime Alive received.\n");
6556
6557         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6558                 /* We had an error bringing up the hardware, so take it
6559                  * all the way back down so we can try again */
6560                 IWL_DEBUG_INFO("Alive failed.\n");
6561                 goto restart;
6562         }
6563
6564         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6565          * This is a paranoid check, because we would not have gotten the
6566          * "runtime" alive if code weren't properly loaded.  */
6567         if (iwl4965_verify_ucode(priv)) {
6568                 /* Runtime instruction load was bad;
6569                  * take it all the way back down so we can try again */
6570                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6571                 goto restart;
6572         }
6573
6574         iwl4965_clear_stations_table(priv);
6575
6576         rc = iwl4965_alive_notify(priv);
6577         if (rc) {
6578                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6579                             rc);
6580                 goto restart;
6581         }
6582
6583         /* After the ALIVE response, we can send host commands to 4965 uCode */
6584         set_bit(STATUS_ALIVE, &priv->status);
6585
6586         /* Clear out the uCode error bit if it is set */
6587         clear_bit(STATUS_FW_ERROR, &priv->status);
6588
6589         rc = iwl4965_init_channel_map(priv);
6590         if (rc) {
6591                 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6592                 return;
6593         }
6594
6595         iwl4965_init_geos(priv);
6596
6597         if (iwl4965_is_rfkill(priv))
6598                 return;
6599
6600         if (!priv->mac80211_registered) {
6601                 /* Unlock so any user space entry points can call back into
6602                  * the driver without a deadlock... */
6603                 mutex_unlock(&priv->mutex);
6604                 iwl4965_rate_control_register(priv->hw);
6605                 rc = ieee80211_register_hw(priv->hw);
6606                 priv->hw->conf.beacon_int = 100;
6607                 mutex_lock(&priv->mutex);
6608
6609                 if (rc) {
6610                         iwl4965_rate_control_unregister(priv->hw);
6611                         IWL_ERROR("Failed to register network "
6612                                   "device (error %d)\n", rc);
6613                         return;
6614                 }
6615
6616                 priv->mac80211_registered = 1;
6617
6618                 iwl4965_reset_channel_flag(priv);
6619         } else
6620                 ieee80211_start_queues(priv->hw);
6621
6622         priv->active_rate = priv->rates_mask;
6623         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6624
6625         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6626
6627         if (iwl4965_is_associated(priv)) {
6628                 struct iwl4965_rxon_cmd *active_rxon =
6629                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6630
6631                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6632                        sizeof(priv->staging_rxon));
6633                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6634         } else {
6635                 /* Initialize our rx_config data */
6636                 iwl4965_connection_init_rx_config(priv);
6637                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6638         }
6639
6640         /* Configure Bluetooth device coexistence support */
6641         iwl4965_send_bt_config(priv);
6642
6643         /* Configure the adapter for unassociated operation */
6644         iwl4965_commit_rxon(priv);
6645
6646         /* At this point, the NIC is initialized and operational */
6647         priv->notif_missed_beacons = 0;
6648         set_bit(STATUS_READY, &priv->status);
6649
6650         iwl4965_rf_kill_ct_config(priv);
6651         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6652
6653         if (priv->error_recovering)
6654                 iwl4965_error_recovery(priv);
6655
6656         return;
6657
6658  restart:
6659         queue_work(priv->workqueue, &priv->restart);
6660 }
6661
6662 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6663
6664 static void __iwl4965_down(struct iwl4965_priv *priv)
6665 {
6666         unsigned long flags;
6667         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6668         struct ieee80211_conf *conf = NULL;
6669
6670         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6671
6672         conf = ieee80211_get_hw_conf(priv->hw);
6673
6674         if (!exit_pending)
6675                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6676
6677         iwl4965_clear_stations_table(priv);
6678
6679         /* Unblock any waiting calls */
6680         wake_up_interruptible_all(&priv->wait_command_queue);
6681
6682         /* Wipe out the EXIT_PENDING status bit if we are not actually
6683          * exiting the module */
6684         if (!exit_pending)
6685                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6686
6687         /* stop and reset the on-board processor */
6688         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6689
6690         /* tell the device to stop sending interrupts */
6691         iwl4965_disable_interrupts(priv);
6692
6693         if (priv->mac80211_registered)
6694                 ieee80211_stop_queues(priv->hw);
6695
6696         /* If we have not previously called iwl4965_init() then
6697          * clear all bits but the RF Kill and SUSPEND bits and return */
6698         if (!iwl4965_is_init(priv)) {
6699                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6700                                         STATUS_RF_KILL_HW |
6701                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6702                                         STATUS_RF_KILL_SW |
6703                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6704                                         STATUS_IN_SUSPEND;
6705                 goto exit;
6706         }
6707
6708         /* ...otherwise clear out all the status bits but the RF Kill and
6709          * SUSPEND bits and continue taking the NIC down. */
6710         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6711                                 STATUS_RF_KILL_HW |
6712                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6713                                 STATUS_RF_KILL_SW |
6714                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6715                                 STATUS_IN_SUSPEND |
6716                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6717                                 STATUS_FW_ERROR;
6718
6719         spin_lock_irqsave(&priv->lock, flags);
6720         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6721                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6722         spin_unlock_irqrestore(&priv->lock, flags);
6723
6724         iwl4965_hw_txq_ctx_stop(priv);
6725         iwl4965_hw_rxq_stop(priv);
6726
6727         spin_lock_irqsave(&priv->lock, flags);
6728         if (!iwl4965_grab_nic_access(priv)) {
6729                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6730                                          APMG_CLK_VAL_DMA_CLK_RQT);
6731                 iwl4965_release_nic_access(priv);
6732         }
6733         spin_unlock_irqrestore(&priv->lock, flags);
6734
6735         udelay(5);
6736
6737         iwl4965_hw_nic_stop_master(priv);
6738         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6739         iwl4965_hw_nic_reset(priv);
6740
6741  exit:
6742         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6743
6744         if (priv->ibss_beacon)
6745                 dev_kfree_skb(priv->ibss_beacon);
6746         priv->ibss_beacon = NULL;
6747
6748         /* clear out any free frames */
6749         iwl4965_clear_free_frames(priv);
6750 }
6751
6752 static void iwl4965_down(struct iwl4965_priv *priv)
6753 {
6754         mutex_lock(&priv->mutex);
6755         __iwl4965_down(priv);
6756         mutex_unlock(&priv->mutex);
6757
6758         iwl4965_cancel_deferred_work(priv);
6759 }
6760
6761 #define MAX_HW_RESTARTS 5
6762
6763 static int __iwl4965_up(struct iwl4965_priv *priv)
6764 {
6765         DECLARE_MAC_BUF(mac);
6766         int rc, i;
6767         u32 hw_rf_kill = 0;
6768
6769         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6770                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6771                 return -EIO;
6772         }
6773
6774         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6775                 IWL_WARNING("Radio disabled by SW RF kill (module "
6776                             "parameter)\n");
6777                 return 0;
6778         }
6779
6780         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6781                 IWL_ERROR("ucode not available for device bringup\n");
6782                 return -EIO;
6783         }
6784
6785         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6786
6787         rc = iwl4965_hw_nic_init(priv);
6788         if (rc) {
6789                 IWL_ERROR("Unable to int nic\n");
6790                 return rc;
6791         }
6792
6793         /* make sure rfkill handshake bits are cleared */
6794         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6795         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6796                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6797
6798         /* clear (again), then enable host interrupts */
6799         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6800         iwl4965_enable_interrupts(priv);
6801
6802         /* really make sure rfkill handshake bits are cleared */
6803         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6804         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6805
6806         /* Copy original ucode data image from disk into backup cache.
6807          * This will be used to initialize the on-board processor's
6808          * data SRAM for a clean start when the runtime program first loads. */
6809         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6810                         priv->ucode_data.len);
6811
6812         /* If platform's RF_KILL switch is set to KILL,
6813          * wait for BIT_INT_RF_KILL interrupt before loading uCode
6814          * and getting things started */
6815         if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
6816                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6817                 hw_rf_kill = 1;
6818
6819         if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6820                 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6821                 return 0;
6822         }
6823
6824         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6825
6826                 iwl4965_clear_stations_table(priv);
6827
6828                 /* load bootstrap state machine,
6829                  * load bootstrap program into processor's memory,
6830                  * prepare to load the "initialize" uCode */
6831                 rc = iwl4965_load_bsm(priv);
6832
6833                 if (rc) {
6834                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6835                         continue;
6836                 }
6837
6838                 /* start card; "initialize" will load runtime ucode */
6839                 iwl4965_nic_start(priv);
6840
6841                 /* MAC Address location in EEPROM is same for 3945/4965 */
6842                 get_eeprom_mac(priv, priv->mac_addr);
6843                 IWL_DEBUG_INFO("MAC address: %s\n",
6844                                print_mac(mac, priv->mac_addr));
6845
6846                 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6847
6848                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6849
6850                 return 0;
6851         }
6852
6853         set_bit(STATUS_EXIT_PENDING, &priv->status);
6854         __iwl4965_down(priv);
6855
6856         /* tried to restart and config the device for as long as our
6857          * patience could withstand */
6858         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6859         return -EIO;
6860 }
6861
6862
6863 /*****************************************************************************
6864  *
6865  * Workqueue callbacks
6866  *
6867  *****************************************************************************/
6868
6869 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6870 {
6871         struct iwl4965_priv *priv =
6872             container_of(data, struct iwl4965_priv, init_alive_start.work);
6873
6874         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6875                 return;
6876
6877         mutex_lock(&priv->mutex);
6878         iwl4965_init_alive_start(priv);
6879         mutex_unlock(&priv->mutex);
6880 }
6881
6882 static void iwl4965_bg_alive_start(struct work_struct *data)
6883 {
6884         struct iwl4965_priv *priv =
6885             container_of(data, struct iwl4965_priv, alive_start.work);
6886
6887         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6888                 return;
6889
6890         mutex_lock(&priv->mutex);
6891         iwl4965_alive_start(priv);
6892         mutex_unlock(&priv->mutex);
6893 }
6894
6895 static void iwl4965_bg_rf_kill(struct work_struct *work)
6896 {
6897         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6898
6899         wake_up_interruptible(&priv->wait_command_queue);
6900
6901         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6902                 return;
6903
6904         mutex_lock(&priv->mutex);
6905
6906         if (!iwl4965_is_rfkill(priv)) {
6907                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6908                           "HW and/or SW RF Kill no longer active, restarting "
6909                           "device\n");
6910                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6911                         queue_work(priv->workqueue, &priv->restart);
6912         } else {
6913
6914                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6915                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6916                                           "disabled by SW switch\n");
6917                 else
6918                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6919                                     "Kill switch must be turned off for "
6920                                     "wireless networking to work.\n");
6921         }
6922         mutex_unlock(&priv->mutex);
6923 }
6924
6925 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6926
6927 static void iwl4965_bg_scan_check(struct work_struct *data)
6928 {
6929         struct iwl4965_priv *priv =
6930             container_of(data, struct iwl4965_priv, scan_check.work);
6931
6932         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6933                 return;
6934
6935         mutex_lock(&priv->mutex);
6936         if (test_bit(STATUS_SCANNING, &priv->status) ||
6937             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6938                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6939                           "Scan completion watchdog resetting adapter (%dms)\n",
6940                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6941
6942                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6943                         iwl4965_send_scan_abort(priv);
6944         }
6945         mutex_unlock(&priv->mutex);
6946 }
6947
6948 static void iwl4965_bg_request_scan(struct work_struct *data)
6949 {
6950         struct iwl4965_priv *priv =
6951             container_of(data, struct iwl4965_priv, request_scan);
6952         struct iwl4965_host_cmd cmd = {
6953                 .id = REPLY_SCAN_CMD,
6954                 .len = sizeof(struct iwl4965_scan_cmd),
6955                 .meta.flags = CMD_SIZE_HUGE,
6956         };
6957         int rc = 0;
6958         struct iwl4965_scan_cmd *scan;
6959         struct ieee80211_conf *conf = NULL;
6960         u8 direct_mask;
6961         int phymode;
6962
6963         conf = ieee80211_get_hw_conf(priv->hw);
6964
6965         mutex_lock(&priv->mutex);
6966
6967         if (!iwl4965_is_ready(priv)) {
6968                 IWL_WARNING("request scan called when driver not ready.\n");
6969                 goto done;
6970         }
6971
6972         /* Make sure the scan wasn't cancelled before this queued work
6973          * was given the chance to run... */
6974         if (!test_bit(STATUS_SCANNING, &priv->status))
6975                 goto done;
6976
6977         /* This should never be called or scheduled if there is currently
6978          * a scan active in the hardware. */
6979         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6980                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6981                                "Ignoring second request.\n");
6982                 rc = -EIO;
6983                 goto done;
6984         }
6985
6986         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6987                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6988                 goto done;
6989         }
6990
6991         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6992                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6993                 goto done;
6994         }
6995
6996         if (iwl4965_is_rfkill(priv)) {
6997                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6998                 goto done;
6999         }
7000
7001         if (!test_bit(STATUS_READY, &priv->status)) {
7002                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
7003                 goto done;
7004         }
7005
7006         if (!priv->scan_bands) {
7007                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
7008                 goto done;
7009         }
7010
7011         if (!priv->scan) {
7012                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
7013                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
7014                 if (!priv->scan) {
7015                         rc = -ENOMEM;
7016                         goto done;
7017                 }
7018         }
7019         scan = priv->scan;
7020         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
7021
7022         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
7023         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
7024
7025         if (iwl4965_is_associated(priv)) {
7026                 u16 interval = 0;
7027                 u32 extra;
7028                 u32 suspend_time = 100;
7029                 u32 scan_suspend_time = 100;
7030                 unsigned long flags;
7031
7032                 IWL_DEBUG_INFO("Scanning while associated...\n");
7033
7034                 spin_lock_irqsave(&priv->lock, flags);
7035                 interval = priv->beacon_int;
7036                 spin_unlock_irqrestore(&priv->lock, flags);
7037
7038                 scan->suspend_time = 0;
7039                 scan->max_out_time = cpu_to_le32(200 * 1024);
7040                 if (!interval)
7041                         interval = suspend_time;
7042
7043                 extra = (suspend_time / interval) << 22;
7044                 scan_suspend_time = (extra |
7045                     ((suspend_time % interval) * 1024));
7046                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
7047                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
7048                                scan_suspend_time, interval);
7049         }
7050
7051         /* We should add the ability for user to lock to PASSIVE ONLY */
7052         if (priv->one_direct_scan) {
7053                 IWL_DEBUG_SCAN
7054                     ("Kicking off one direct scan for '%s'\n",
7055                      iwl4965_escape_essid(priv->direct_ssid,
7056                                       priv->direct_ssid_len));
7057                 scan->direct_scan[0].id = WLAN_EID_SSID;
7058                 scan->direct_scan[0].len = priv->direct_ssid_len;
7059                 memcpy(scan->direct_scan[0].ssid,
7060                        priv->direct_ssid, priv->direct_ssid_len);
7061                 direct_mask = 1;
7062         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
7063                 scan->direct_scan[0].id = WLAN_EID_SSID;
7064                 scan->direct_scan[0].len = priv->essid_len;
7065                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
7066                 direct_mask = 1;
7067         } else
7068                 direct_mask = 0;
7069
7070         /* We don't build a direct scan probe request; the uCode will do
7071          * that based on the direct_mask added to each channel entry */
7072         scan->tx_cmd.len = cpu_to_le16(
7073                 iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
7074                         IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
7075         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
7076         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
7077         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
7078
7079         /* flags + rate selection */
7080
7081         scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
7082
7083         switch (priv->scan_bands) {
7084         case 2:
7085                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
7086                 scan->tx_cmd.rate_n_flags =
7087                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
7088                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7089
7090                 scan->good_CRC_th = 0;
7091                 phymode = MODE_IEEE80211G;
7092                 break;
7093
7094         case 1:
7095                 scan->tx_cmd.rate_n_flags =
7096                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7097                                 RATE_MCS_ANT_B_MSK);
7098                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7099                 phymode = MODE_IEEE80211A;
7100                 break;
7101
7102         default:
7103                 IWL_WARNING("Invalid scan band count\n");
7104                 goto done;
7105         }
7106
7107         /* select Rx chains */
7108
7109         /* Force use of chains B and C (0x6) for scan Rx.
7110          * Avoid A (0x1) because of its off-channel reception on A-band.
7111          * MIMO is not used here, but value is required to make uCode happy. */
7112         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7113                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7114                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7115                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7116
7117         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7118                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7119
7120         if (direct_mask)
7121                 IWL_DEBUG_SCAN
7122                     ("Initiating direct scan for %s.\n",
7123                      iwl4965_escape_essid(priv->essid, priv->essid_len));
7124         else
7125                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7126
7127         scan->channel_count =
7128                 iwl4965_get_channels_for_scan(
7129                         priv, phymode, 1, /* active */
7130                         direct_mask,
7131                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7132
7133         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7134             scan->channel_count * sizeof(struct iwl4965_scan_channel);
7135         cmd.data = scan;
7136         scan->len = cpu_to_le16(cmd.len);
7137
7138         set_bit(STATUS_SCAN_HW, &priv->status);
7139         rc = iwl4965_send_cmd_sync(priv, &cmd);
7140         if (rc)
7141                 goto done;
7142
7143         queue_delayed_work(priv->workqueue, &priv->scan_check,
7144                            IWL_SCAN_CHECK_WATCHDOG);
7145
7146         mutex_unlock(&priv->mutex);
7147         return;
7148
7149  done:
7150         /* inform mac80211 scan aborted */
7151         queue_work(priv->workqueue, &priv->scan_completed);
7152         mutex_unlock(&priv->mutex);
7153 }
7154
7155 static void iwl4965_bg_up(struct work_struct *data)
7156 {
7157         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7158
7159         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7160                 return;
7161
7162         mutex_lock(&priv->mutex);
7163         __iwl4965_up(priv);
7164         mutex_unlock(&priv->mutex);
7165 }
7166
7167 static void iwl4965_bg_restart(struct work_struct *data)
7168 {
7169         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7170
7171         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7172                 return;
7173
7174         iwl4965_down(priv);
7175         queue_work(priv->workqueue, &priv->up);
7176 }
7177
7178 static void iwl4965_bg_rx_replenish(struct work_struct *data)
7179 {
7180         struct iwl4965_priv *priv =
7181             container_of(data, struct iwl4965_priv, rx_replenish);
7182
7183         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7184                 return;
7185
7186         mutex_lock(&priv->mutex);
7187         iwl4965_rx_replenish(priv);
7188         mutex_unlock(&priv->mutex);
7189 }
7190
7191 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7192
7193 static void iwl4965_bg_post_associate(struct work_struct *data)
7194 {
7195         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7196                                              post_associate.work);
7197
7198         int rc = 0;
7199         struct ieee80211_conf *conf = NULL;
7200         DECLARE_MAC_BUF(mac);
7201
7202         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7203                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7204                 return;
7205         }
7206
7207         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7208                         priv->assoc_id,
7209                         print_mac(mac, priv->active_rxon.bssid_addr));
7210
7211
7212         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7213                 return;
7214
7215         mutex_lock(&priv->mutex);
7216
7217         if (!priv->interface_id || !priv->is_open) {
7218                 mutex_unlock(&priv->mutex);
7219                 return;
7220         }
7221         iwl4965_scan_cancel_timeout(priv, 200);
7222
7223         conf = ieee80211_get_hw_conf(priv->hw);
7224
7225         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7226         iwl4965_commit_rxon(priv);
7227
7228         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7229         iwl4965_setup_rxon_timing(priv);
7230         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7231                               sizeof(priv->rxon_timing), &priv->rxon_timing);
7232         if (rc)
7233                 IWL_WARNING("REPLY_RXON_TIMING failed - "
7234                             "Attempting to continue.\n");
7235
7236         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7237
7238 #ifdef CONFIG_IWL4965_HT
7239         if (priv->current_ht_config.is_ht)
7240                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
7241 #endif /* CONFIG_IWL4965_HT*/
7242         iwl4965_set_rxon_chain(priv);
7243         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7244
7245         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7246                         priv->assoc_id, priv->beacon_int);
7247
7248         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7249                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7250         else
7251                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7252
7253         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7254                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7255                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7256                 else
7257                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7258
7259                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7260                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7261
7262         }
7263
7264         iwl4965_commit_rxon(priv);
7265
7266         switch (priv->iw_mode) {
7267         case IEEE80211_IF_TYPE_STA:
7268                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7269                 break;
7270
7271         case IEEE80211_IF_TYPE_IBSS:
7272
7273                 /* clear out the station table */
7274                 iwl4965_clear_stations_table(priv);
7275
7276                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7277                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7278                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7279                 iwl4965_send_beacon_cmd(priv);
7280
7281                 break;
7282
7283         default:
7284                 IWL_ERROR("%s Should not be called in %d mode\n",
7285                                 __FUNCTION__, priv->iw_mode);
7286                 break;
7287         }
7288
7289         iwl4965_sequence_reset(priv);
7290
7291 #ifdef CONFIG_IWL4965_SENSITIVITY
7292         /* Enable Rx differential gain and sensitivity calibrations */
7293         iwl4965_chain_noise_reset(priv);
7294         priv->start_calib = 1;
7295 #endif /* CONFIG_IWL4965_SENSITIVITY */
7296
7297         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7298                 priv->assoc_station_added = 1;
7299
7300 #ifdef CONFIG_IWL4965_QOS
7301         iwl4965_activate_qos(priv, 0);
7302 #endif /* CONFIG_IWL4965_QOS */
7303         /* we have just associated, don't start scan too early */
7304         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7305         mutex_unlock(&priv->mutex);
7306 }
7307
7308 static void iwl4965_bg_abort_scan(struct work_struct *work)
7309 {
7310         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7311
7312         if (!iwl4965_is_ready(priv))
7313                 return;
7314
7315         mutex_lock(&priv->mutex);
7316
7317         set_bit(STATUS_SCAN_ABORTING, &priv->status);
7318         iwl4965_send_scan_abort(priv);
7319
7320         mutex_unlock(&priv->mutex);
7321 }
7322
7323 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7324
7325 static void iwl4965_bg_scan_completed(struct work_struct *work)
7326 {
7327         struct iwl4965_priv *priv =
7328             container_of(work, struct iwl4965_priv, scan_completed);
7329
7330         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7331
7332         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7333                 return;
7334
7335         if (priv->cache_conf)
7336                 iwl4965_mac_config(priv->hw, priv->cache_conf);
7337
7338         ieee80211_scan_completed(priv->hw);
7339
7340         /* Since setting the TXPOWER may have been deferred while
7341          * performing the scan, fire one off */
7342         mutex_lock(&priv->mutex);
7343         iwl4965_hw_reg_send_txpower(priv);
7344         mutex_unlock(&priv->mutex);
7345 }
7346
7347 /*****************************************************************************
7348  *
7349  * mac80211 entry point functions
7350  *
7351  *****************************************************************************/
7352
7353 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7354 {
7355         struct iwl4965_priv *priv = hw->priv;
7356
7357         IWL_DEBUG_MAC80211("enter\n");
7358
7359         /* we should be verifying the device is ready to be opened */
7360         mutex_lock(&priv->mutex);
7361
7362         priv->is_open = 1;
7363
7364         if (!iwl4965_is_rfkill(priv))
7365                 ieee80211_start_queues(priv->hw);
7366
7367         mutex_unlock(&priv->mutex);
7368         IWL_DEBUG_MAC80211("leave\n");
7369         return 0;
7370 }
7371
7372 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7373 {
7374         struct iwl4965_priv *priv = hw->priv;
7375
7376         IWL_DEBUG_MAC80211("enter\n");
7377
7378
7379         mutex_lock(&priv->mutex);
7380         /* stop mac, cancel any scan request and clear
7381          * RXON_FILTER_ASSOC_MSK BIT
7382          */
7383         priv->is_open = 0;
7384         if (!iwl4965_is_ready_rf(priv)) {
7385                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7386                 mutex_unlock(&priv->mutex);
7387                 return;
7388         }
7389
7390         iwl4965_scan_cancel_timeout(priv, 100);
7391         cancel_delayed_work(&priv->post_associate);
7392         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7393         iwl4965_commit_rxon(priv);
7394         mutex_unlock(&priv->mutex);
7395
7396         IWL_DEBUG_MAC80211("leave\n");
7397 }
7398
7399 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7400                       struct ieee80211_tx_control *ctl)
7401 {
7402         struct iwl4965_priv *priv = hw->priv;
7403
7404         IWL_DEBUG_MAC80211("enter\n");
7405
7406         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7407                 IWL_DEBUG_MAC80211("leave - monitor\n");
7408                 return -1;
7409         }
7410
7411         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7412                      ctl->tx_rate);
7413
7414         if (iwl4965_tx_skb(priv, skb, ctl))
7415                 dev_kfree_skb_any(skb);
7416
7417         IWL_DEBUG_MAC80211("leave\n");
7418         return 0;
7419 }
7420
7421 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7422                                  struct ieee80211_if_init_conf *conf)
7423 {
7424         struct iwl4965_priv *priv = hw->priv;
7425         unsigned long flags;
7426         DECLARE_MAC_BUF(mac);
7427
7428         IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7429
7430         if (priv->interface_id) {
7431                 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7432                 return 0;
7433         }
7434
7435         spin_lock_irqsave(&priv->lock, flags);
7436         priv->interface_id = conf->if_id;
7437
7438         spin_unlock_irqrestore(&priv->lock, flags);
7439
7440         mutex_lock(&priv->mutex);
7441
7442         if (conf->mac_addr) {
7443                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7444                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7445         }
7446         iwl4965_set_mode(priv, conf->type);
7447
7448         IWL_DEBUG_MAC80211("leave\n");
7449         mutex_unlock(&priv->mutex);
7450
7451         return 0;
7452 }
7453
7454 /**
7455  * iwl4965_mac_config - mac80211 config callback
7456  *
7457  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7458  * be set inappropriately and the driver currently sets the hardware up to
7459  * use it whenever needed.
7460  */
7461 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7462 {
7463         struct iwl4965_priv *priv = hw->priv;
7464         const struct iwl4965_channel_info *ch_info;
7465         unsigned long flags;
7466         int ret = 0;
7467
7468         mutex_lock(&priv->mutex);
7469         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7470
7471         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7472
7473         if (!iwl4965_is_ready(priv)) {
7474                 IWL_DEBUG_MAC80211("leave - not ready\n");
7475                 ret = -EIO;
7476                 goto out;
7477         }
7478
7479         /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7480          * what is exposed through include/ declarations */
7481         if (unlikely(!iwl4965_param_disable_hw_scan &&
7482                      test_bit(STATUS_SCANNING, &priv->status))) {
7483
7484                 if (unlikely(priv->cache_conf))
7485                         IWL_DEBUG_MAC80211("leave - still scanning\n");
7486                 else {
7487                         /* Cache the configuration now so that we can
7488                          * replay it after the hardware scan is finished. */
7489                         priv->cache_conf = kmalloc(sizeof(*conf), GFP_KERNEL);
7490                         if (priv->cache_conf) {
7491                                 memcpy(priv->cache_conf, conf, sizeof(*conf));
7492                                 IWL_DEBUG_MAC80211("leave - scanning\n");
7493                         } else {
7494                                 IWL_DEBUG_MAC80211("leave - no memory\n");
7495                                 ret = -ENOMEM;
7496                         }
7497                 }
7498                 mutex_unlock(&priv->mutex);
7499                 return ret;
7500         }
7501
7502         spin_lock_irqsave(&priv->lock, flags);
7503
7504         ch_info = iwl4965_get_channel_info(priv, conf->phymode, conf->channel);
7505         if (!is_channel_valid(ch_info)) {
7506                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7507                                conf->channel, conf->phymode);
7508                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7509                 spin_unlock_irqrestore(&priv->lock, flags);
7510                 ret = -EINVAL;
7511                 goto out;
7512         }
7513
7514 #ifdef CONFIG_IWL4965_HT
7515         /* if we are switching fron ht to 2.4 clear flags
7516          * from any ht related info since 2.4 does not
7517          * support ht */
7518         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7519 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7520             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7521 #endif
7522         )
7523                 priv->staging_rxon.flags = 0;
7524 #endif /* CONFIG_IWL4965_HT */
7525
7526         iwl4965_set_rxon_channel(priv, conf->phymode, conf->channel);
7527
7528         iwl4965_set_flags_for_phymode(priv, conf->phymode);
7529
7530         /* The list of supported rates and rate mask can be different
7531          * for each phymode; since the phymode may have changed, reset
7532          * the rate mask to what mac80211 lists */
7533         iwl4965_set_rate(priv);
7534
7535         spin_unlock_irqrestore(&priv->lock, flags);
7536
7537 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7538         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7539                 iwl4965_hw_channel_switch(priv, conf->channel);
7540                 goto out;
7541         }
7542 #endif
7543
7544         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7545
7546         if (!conf->radio_enabled) {
7547                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7548                 goto out;
7549         }
7550
7551         if (iwl4965_is_rfkill(priv)) {
7552                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7553                 ret = -EIO;
7554                 goto out;
7555         }
7556
7557         iwl4965_set_rate(priv);
7558
7559         if (memcmp(&priv->active_rxon,
7560                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7561                 iwl4965_commit_rxon(priv);
7562         else
7563                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7564
7565         IWL_DEBUG_MAC80211("leave\n");
7566
7567 out:
7568         if (priv->cache_conf) {
7569                 kfree(priv->cache_conf);
7570                 priv->cache_conf = NULL;
7571         }
7572         mutex_unlock(&priv->mutex);
7573         return ret;
7574 }
7575
7576 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7577 {
7578         int rc = 0;
7579
7580         if (priv->status & STATUS_EXIT_PENDING)
7581                 return;
7582
7583         /* The following should be done only at AP bring up */
7584         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7585
7586                 /* RXON - unassoc (to set timing command) */
7587                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7588                 iwl4965_commit_rxon(priv);
7589
7590                 /* RXON Timing */
7591                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7592                 iwl4965_setup_rxon_timing(priv);
7593                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7594                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7595                 if (rc)
7596                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7597                                         "Attempting to continue.\n");
7598
7599                 iwl4965_set_rxon_chain(priv);
7600
7601                 /* FIXME: what should be the assoc_id for AP? */
7602                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7603                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7604                         priv->staging_rxon.flags |=
7605                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7606                 else
7607                         priv->staging_rxon.flags &=
7608                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7609
7610                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7611                         if (priv->assoc_capability &
7612                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7613                                 priv->staging_rxon.flags |=
7614                                         RXON_FLG_SHORT_SLOT_MSK;
7615                         else
7616                                 priv->staging_rxon.flags &=
7617                                         ~RXON_FLG_SHORT_SLOT_MSK;
7618
7619                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7620                                 priv->staging_rxon.flags &=
7621                                         ~RXON_FLG_SHORT_SLOT_MSK;
7622                 }
7623                 /* restore RXON assoc */
7624                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7625                 iwl4965_commit_rxon(priv);
7626 #ifdef CONFIG_IWL4965_QOS
7627                 iwl4965_activate_qos(priv, 1);
7628 #endif
7629                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7630         }
7631         iwl4965_send_beacon_cmd(priv);
7632
7633         /* FIXME - we need to add code here to detect a totally new
7634          * configuration, reset the AP, unassoc, rxon timing, assoc,
7635          * clear sta table, add BCAST sta... */
7636 }
7637
7638 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7639                                     struct ieee80211_if_conf *conf)
7640 {
7641         struct iwl4965_priv *priv = hw->priv;
7642         DECLARE_MAC_BUF(mac);
7643         unsigned long flags;
7644         int rc;
7645
7646         if (conf == NULL)
7647                 return -EIO;
7648
7649         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7650             (!conf->beacon || !conf->ssid_len)) {
7651                 IWL_DEBUG_MAC80211
7652                     ("Leaving in AP mode because HostAPD is not ready.\n");
7653                 return 0;
7654         }
7655
7656         mutex_lock(&priv->mutex);
7657
7658         IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7659         if (conf->bssid)
7660                 IWL_DEBUG_MAC80211("bssid: %s\n",
7661                                    print_mac(mac, conf->bssid));
7662
7663 /*
7664  * very dubious code was here; the probe filtering flag is never set:
7665  *
7666         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7667             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7668  */
7669         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7670                 IWL_DEBUG_MAC80211("leave - scanning\n");
7671                 mutex_unlock(&priv->mutex);
7672                 return 0;
7673         }
7674
7675         if (priv->interface_id != if_id) {
7676                 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7677                 mutex_unlock(&priv->mutex);
7678                 return 0;
7679         }
7680
7681         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7682                 if (!conf->bssid) {
7683                         conf->bssid = priv->mac_addr;
7684                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7685                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7686                                            print_mac(mac, conf->bssid));
7687                 }
7688                 if (priv->ibss_beacon)
7689                         dev_kfree_skb(priv->ibss_beacon);
7690
7691                 priv->ibss_beacon = conf->beacon;
7692         }
7693
7694         if (iwl4965_is_rfkill(priv))
7695                 goto done;
7696
7697         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7698             !is_multicast_ether_addr(conf->bssid)) {
7699                 /* If there is currently a HW scan going on in the background
7700                  * then we need to cancel it else the RXON below will fail. */
7701                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7702                         IWL_WARNING("Aborted scan still in progress "
7703                                     "after 100ms\n");
7704                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7705                         mutex_unlock(&priv->mutex);
7706                         return -EAGAIN;
7707                 }
7708                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7709
7710                 /* TODO: Audit driver for usage of these members and see
7711                  * if mac80211 deprecates them (priv->bssid looks like it
7712                  * shouldn't be there, but I haven't scanned the IBSS code
7713                  * to verify) - jpk */
7714                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7715
7716                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7717                         iwl4965_config_ap(priv);
7718                 else {
7719                         rc = iwl4965_commit_rxon(priv);
7720                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7721                                 iwl4965_rxon_add_station(
7722                                         priv, priv->active_rxon.bssid_addr, 1);
7723                 }
7724
7725         } else {
7726                 iwl4965_scan_cancel_timeout(priv, 100);
7727                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7728                 iwl4965_commit_rxon(priv);
7729         }
7730
7731  done:
7732         spin_lock_irqsave(&priv->lock, flags);
7733         if (!conf->ssid_len)
7734                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7735         else
7736                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7737
7738         priv->essid_len = conf->ssid_len;
7739         spin_unlock_irqrestore(&priv->lock, flags);
7740
7741         IWL_DEBUG_MAC80211("leave\n");
7742         mutex_unlock(&priv->mutex);
7743
7744         return 0;
7745 }
7746
7747 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7748                                  unsigned int changed_flags,
7749                                  unsigned int *total_flags,
7750                                  int mc_count, struct dev_addr_list *mc_list)
7751 {
7752         /*
7753          * XXX: dummy
7754          * see also iwl4965_connection_init_rx_config
7755          */
7756         *total_flags = 0;
7757 }
7758
7759 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7760                                      struct ieee80211_if_init_conf *conf)
7761 {
7762         struct iwl4965_priv *priv = hw->priv;
7763
7764         IWL_DEBUG_MAC80211("enter\n");
7765
7766         mutex_lock(&priv->mutex);
7767
7768         if (iwl4965_is_ready_rf(priv)) {
7769                 iwl4965_scan_cancel_timeout(priv, 100);
7770                 cancel_delayed_work(&priv->post_associate);
7771                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7772                 iwl4965_commit_rxon(priv);
7773         }
7774         if (priv->interface_id == conf->if_id) {
7775                 priv->interface_id = 0;
7776                 memset(priv->bssid, 0, ETH_ALEN);
7777                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7778                 priv->essid_len = 0;
7779         }
7780         mutex_unlock(&priv->mutex);
7781
7782         IWL_DEBUG_MAC80211("leave\n");
7783
7784 }
7785 static void iwl4965_mac_erp_ie_changed(struct ieee80211_hw *hw,
7786                 u8 changes, int cts_protection, int preamble)
7787 {
7788         struct iwl4965_priv *priv = hw->priv;
7789
7790         if (changes & IEEE80211_ERP_CHANGE_PREAMBLE) {
7791                 if (preamble == WLAN_ERP_PREAMBLE_SHORT)
7792                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7793                 else
7794                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7795         }
7796
7797         if (changes & IEEE80211_ERP_CHANGE_PROTECTION) {
7798                 if (cts_protection && (priv->phymode != MODE_IEEE80211A))
7799                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7800                 else
7801                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7802         }
7803
7804         if (iwl4965_is_associated(priv))
7805                 iwl4965_send_rxon_assoc(priv);
7806 }
7807
7808 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7809 {
7810         int rc = 0;
7811         unsigned long flags;
7812         struct iwl4965_priv *priv = hw->priv;
7813
7814         IWL_DEBUG_MAC80211("enter\n");
7815
7816         mutex_lock(&priv->mutex);
7817         spin_lock_irqsave(&priv->lock, flags);
7818
7819         if (!iwl4965_is_ready_rf(priv)) {
7820                 rc = -EIO;
7821                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7822                 goto out_unlock;
7823         }
7824
7825         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7826                 rc = -EIO;
7827                 IWL_ERROR("ERROR: APs don't scan\n");
7828                 goto out_unlock;
7829         }
7830
7831         /* we don't schedule scan within next_scan_jiffies period */
7832         if (priv->next_scan_jiffies &&
7833                         time_after(priv->next_scan_jiffies, jiffies)) {
7834                 rc = -EAGAIN;
7835                 goto out_unlock;
7836         }
7837         /* if we just finished scan ask for delay */
7838         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7839                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
7840                 rc = -EAGAIN;
7841                 goto out_unlock;
7842         }
7843         if (len) {
7844                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7845                                iwl4965_escape_essid(ssid, len), (int)len);
7846
7847                 priv->one_direct_scan = 1;
7848                 priv->direct_ssid_len = (u8)
7849                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7850                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7851         } else
7852                 priv->one_direct_scan = 0;
7853
7854         rc = iwl4965_scan_initiate(priv);
7855
7856         IWL_DEBUG_MAC80211("leave\n");
7857
7858 out_unlock:
7859         spin_unlock_irqrestore(&priv->lock, flags);
7860         mutex_unlock(&priv->mutex);
7861
7862         return rc;
7863 }
7864
7865 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7866                            const u8 *local_addr, const u8 *addr,
7867                            struct ieee80211_key_conf *key)
7868 {
7869         struct iwl4965_priv *priv = hw->priv;
7870         DECLARE_MAC_BUF(mac);
7871         int rc = 0;
7872         u8 sta_id;
7873
7874         IWL_DEBUG_MAC80211("enter\n");
7875
7876         if (!iwl4965_param_hwcrypto) {
7877                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7878                 return -EOPNOTSUPP;
7879         }
7880
7881         if (is_zero_ether_addr(addr))
7882                 /* only support pairwise keys */
7883                 return -EOPNOTSUPP;
7884
7885         sta_id = iwl4965_hw_find_station(priv, addr);
7886         if (sta_id == IWL_INVALID_STATION) {
7887                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7888                                    print_mac(mac, addr));
7889                 return -EINVAL;
7890         }
7891
7892         mutex_lock(&priv->mutex);
7893
7894         iwl4965_scan_cancel_timeout(priv, 100);
7895
7896         switch (cmd) {
7897         case  SET_KEY:
7898                 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7899                 if (!rc) {
7900                         iwl4965_set_rxon_hwcrypto(priv, 1);
7901                         iwl4965_commit_rxon(priv);
7902                         key->hw_key_idx = sta_id;
7903                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7904                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7905                 }
7906                 break;
7907         case DISABLE_KEY:
7908                 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7909                 if (!rc) {
7910                         iwl4965_set_rxon_hwcrypto(priv, 0);
7911                         iwl4965_commit_rxon(priv);
7912                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7913                 }
7914                 break;
7915         default:
7916                 rc = -EINVAL;
7917         }
7918
7919         IWL_DEBUG_MAC80211("leave\n");
7920         mutex_unlock(&priv->mutex);
7921
7922         return rc;
7923 }
7924
7925 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7926                            const struct ieee80211_tx_queue_params *params)
7927 {
7928         struct iwl4965_priv *priv = hw->priv;
7929 #ifdef CONFIG_IWL4965_QOS
7930         unsigned long flags;
7931         int q;
7932 #endif /* CONFIG_IWL4965_QOS */
7933
7934         IWL_DEBUG_MAC80211("enter\n");
7935
7936         if (!iwl4965_is_ready_rf(priv)) {
7937                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7938                 return -EIO;
7939         }
7940
7941         if (queue >= AC_NUM) {
7942                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7943                 return 0;
7944         }
7945
7946 #ifdef CONFIG_IWL4965_QOS
7947         if (!priv->qos_data.qos_enable) {
7948                 priv->qos_data.qos_active = 0;
7949                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7950                 return 0;
7951         }
7952         q = AC_NUM - 1 - queue;
7953
7954         spin_lock_irqsave(&priv->lock, flags);
7955
7956         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7957         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7958         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7959         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7960                         cpu_to_le16((params->burst_time * 100));
7961
7962         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7963         priv->qos_data.qos_active = 1;
7964
7965         spin_unlock_irqrestore(&priv->lock, flags);
7966
7967         mutex_lock(&priv->mutex);
7968         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7969                 iwl4965_activate_qos(priv, 1);
7970         else if (priv->assoc_id && iwl4965_is_associated(priv))
7971                 iwl4965_activate_qos(priv, 0);
7972
7973         mutex_unlock(&priv->mutex);
7974
7975 #endif /*CONFIG_IWL4965_QOS */
7976
7977         IWL_DEBUG_MAC80211("leave\n");
7978         return 0;
7979 }
7980
7981 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7982                                 struct ieee80211_tx_queue_stats *stats)
7983 {
7984         struct iwl4965_priv *priv = hw->priv;
7985         int i, avail;
7986         struct iwl4965_tx_queue *txq;
7987         struct iwl4965_queue *q;
7988         unsigned long flags;
7989
7990         IWL_DEBUG_MAC80211("enter\n");
7991
7992         if (!iwl4965_is_ready_rf(priv)) {
7993                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7994                 return -EIO;
7995         }
7996
7997         spin_lock_irqsave(&priv->lock, flags);
7998
7999         for (i = 0; i < AC_NUM; i++) {
8000                 txq = &priv->txq[i];
8001                 q = &txq->q;
8002                 avail = iwl4965_queue_space(q);
8003
8004                 stats->data[i].len = q->n_window - avail;
8005                 stats->data[i].limit = q->n_window - q->high_mark;
8006                 stats->data[i].count = q->n_window;
8007
8008         }
8009         spin_unlock_irqrestore(&priv->lock, flags);
8010
8011         IWL_DEBUG_MAC80211("leave\n");
8012
8013         return 0;
8014 }
8015
8016 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
8017                              struct ieee80211_low_level_stats *stats)
8018 {
8019         IWL_DEBUG_MAC80211("enter\n");
8020         IWL_DEBUG_MAC80211("leave\n");
8021
8022         return 0;
8023 }
8024
8025 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
8026 {
8027         IWL_DEBUG_MAC80211("enter\n");
8028         IWL_DEBUG_MAC80211("leave\n");
8029
8030         return 0;
8031 }
8032
8033 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
8034 {
8035         struct iwl4965_priv *priv = hw->priv;
8036         unsigned long flags;
8037
8038         mutex_lock(&priv->mutex);
8039         IWL_DEBUG_MAC80211("enter\n");
8040
8041         priv->lq_mngr.lq_ready = 0;
8042 #ifdef CONFIG_IWL4965_HT
8043         spin_lock_irqsave(&priv->lock, flags);
8044         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
8045         spin_unlock_irqrestore(&priv->lock, flags);
8046 #ifdef CONFIG_IWL4965_HT_AGG
8047 /*      if (priv->lq_mngr.agg_ctrl.granted_ba)
8048                 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
8049
8050         memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl4965_agg_control));
8051         priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
8052         priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
8053         priv->lq_mngr.agg_ctrl.auto_agg = 1;
8054
8055         if (priv->lq_mngr.agg_ctrl.auto_agg)
8056                 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
8057 #endif /*CONFIG_IWL4965_HT_AGG */
8058 #endif /* CONFIG_IWL4965_HT */
8059
8060 #ifdef CONFIG_IWL4965_QOS
8061         iwl4965_reset_qos(priv);
8062 #endif
8063
8064         cancel_delayed_work(&priv->post_associate);
8065
8066         spin_lock_irqsave(&priv->lock, flags);
8067         priv->assoc_id = 0;
8068         priv->assoc_capability = 0;
8069         priv->call_post_assoc_from_beacon = 0;
8070         priv->assoc_station_added = 0;
8071
8072         /* new association get rid of ibss beacon skb */
8073         if (priv->ibss_beacon)
8074                 dev_kfree_skb(priv->ibss_beacon);
8075
8076         priv->ibss_beacon = NULL;
8077
8078         priv->beacon_int = priv->hw->conf.beacon_int;
8079         priv->timestamp1 = 0;
8080         priv->timestamp0 = 0;
8081         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
8082                 priv->beacon_int = 0;
8083
8084         spin_unlock_irqrestore(&priv->lock, flags);
8085
8086         if (!iwl4965_is_ready_rf(priv)) {
8087                 IWL_DEBUG_MAC80211("leave - not ready\n");
8088                 mutex_unlock(&priv->mutex);
8089                 return;
8090         }
8091
8092         /* we are restarting association process
8093          * clear RXON_FILTER_ASSOC_MSK bit
8094          */
8095         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
8096                 iwl4965_scan_cancel_timeout(priv, 100);
8097                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
8098                 iwl4965_commit_rxon(priv);
8099         }
8100
8101         /* Per mac80211.h: This is only used in IBSS mode... */
8102         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8103
8104                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
8105                 mutex_unlock(&priv->mutex);
8106                 return;
8107         }
8108
8109         priv->only_active_channel = 0;
8110
8111         iwl4965_set_rate(priv);
8112
8113         mutex_unlock(&priv->mutex);
8114
8115         IWL_DEBUG_MAC80211("leave\n");
8116
8117 }
8118
8119 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
8120                                  struct ieee80211_tx_control *control)
8121 {
8122         struct iwl4965_priv *priv = hw->priv;
8123         unsigned long flags;
8124
8125         mutex_lock(&priv->mutex);
8126         IWL_DEBUG_MAC80211("enter\n");
8127
8128         if (!iwl4965_is_ready_rf(priv)) {
8129                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8130                 mutex_unlock(&priv->mutex);
8131                 return -EIO;
8132         }
8133
8134         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8135                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
8136                 mutex_unlock(&priv->mutex);
8137                 return -EIO;
8138         }
8139
8140         spin_lock_irqsave(&priv->lock, flags);
8141
8142         if (priv->ibss_beacon)
8143                 dev_kfree_skb(priv->ibss_beacon);
8144
8145         priv->ibss_beacon = skb;
8146
8147         priv->assoc_id = 0;
8148
8149         IWL_DEBUG_MAC80211("leave\n");
8150         spin_unlock_irqrestore(&priv->lock, flags);
8151
8152 #ifdef CONFIG_IWL4965_QOS
8153         iwl4965_reset_qos(priv);
8154 #endif
8155
8156         queue_work(priv->workqueue, &priv->post_associate.work);
8157
8158         mutex_unlock(&priv->mutex);
8159
8160         return 0;
8161 }
8162
8163 #ifdef CONFIG_IWL4965_HT
8164
8165 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
8166                                  struct iwl4965_priv *priv)
8167 {
8168         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
8169         struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
8170         struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
8171
8172         IWL_DEBUG_MAC80211("enter: \n");
8173
8174         if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
8175                 iwl_conf->is_ht = 0;
8176                 return;
8177         }
8178
8179         iwl_conf->is_ht = 1;
8180         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
8181
8182         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
8183                 iwl_conf->sgf |= 0x1;
8184         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
8185                 iwl_conf->sgf |= 0x2;
8186
8187         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
8188         iwl_conf->max_amsdu_size =
8189                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
8190         iwl_conf->supported_chan_width =
8191                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
8192         iwl_conf->tx_mimo_ps_mode =
8193                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
8194         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
8195
8196         iwl_conf->control_channel = ht_bss_conf->primary_channel;
8197         iwl_conf->extension_chan_offset =
8198                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
8199         iwl_conf->tx_chan_width =
8200                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
8201         iwl_conf->ht_protection =
8202                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
8203         iwl_conf->non_GF_STA_present =
8204                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
8205
8206         IWL_DEBUG_MAC80211("control channel %d\n",
8207                 iwl_conf->control_channel);
8208         IWL_DEBUG_MAC80211("leave\n");
8209 }
8210
8211 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8212                                struct ieee80211_conf *conf)
8213 {
8214         struct iwl4965_priv *priv = hw->priv;
8215
8216         IWL_DEBUG_MAC80211("enter: \n");
8217
8218         iwl4965_ht_info_fill(conf, priv);
8219         iwl4965_set_rxon_chain(priv);
8220
8221         if (priv && priv->assoc_id &&
8222             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8223                 unsigned long flags;
8224
8225                 spin_lock_irqsave(&priv->lock, flags);
8226                 if (priv->beacon_int)
8227                         queue_work(priv->workqueue, &priv->post_associate.work);
8228                 else
8229                         priv->call_post_assoc_from_beacon = 1;
8230                 spin_unlock_irqrestore(&priv->lock, flags);
8231         }
8232
8233         IWL_DEBUG_MAC80211("leave:\n");
8234         return 0;
8235 }
8236
8237 static void iwl4965_set_ht_capab(struct ieee80211_hw *hw,
8238                         struct ieee80211_ht_cap *ht_cap,
8239                         u8 use_current_config)
8240 {
8241         struct ieee80211_conf *conf = &hw->conf;
8242         struct ieee80211_hw_mode *mode = conf->mode;
8243
8244         if (use_current_config) {
8245                 ht_cap->cap_info = cpu_to_le16(conf->ht_conf.cap);
8246                 memcpy(ht_cap->supp_mcs_set,
8247                                 conf->ht_conf.supp_mcs_set, 16);
8248         } else {
8249                 ht_cap->cap_info = cpu_to_le16(mode->ht_info.cap);
8250                 memcpy(ht_cap->supp_mcs_set,
8251                                 mode->ht_info.supp_mcs_set, 16);
8252         }
8253         ht_cap->ampdu_params_info =
8254                 (mode->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
8255                 ((mode->ht_info.ampdu_density << 2) &
8256                                         IEEE80211_HT_CAP_AMPDU_DENSITY);
8257 }
8258
8259 #endif /*CONFIG_IWL4965_HT*/
8260
8261 /*****************************************************************************
8262  *
8263  * sysfs attributes
8264  *
8265  *****************************************************************************/
8266
8267 #ifdef CONFIG_IWL4965_DEBUG
8268
8269 /*
8270  * The following adds a new attribute to the sysfs representation
8271  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8272  * used for controlling the debug level.
8273  *
8274  * See the level definitions in iwl for details.
8275  */
8276
8277 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8278 {
8279         return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8280 }
8281 static ssize_t store_debug_level(struct device_driver *d,
8282                                  const char *buf, size_t count)
8283 {
8284         char *p = (char *)buf;
8285         u32 val;
8286
8287         val = simple_strtoul(p, &p, 0);
8288         if (p == buf)
8289                 printk(KERN_INFO DRV_NAME
8290                        ": %s is not in hex or decimal form.\n", buf);
8291         else
8292                 iwl4965_debug_level = val;
8293
8294         return strnlen(buf, count);
8295 }
8296
8297 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8298                    show_debug_level, store_debug_level);
8299
8300 #endif /* CONFIG_IWL4965_DEBUG */
8301
8302 static ssize_t show_rf_kill(struct device *d,
8303                             struct device_attribute *attr, char *buf)
8304 {
8305         /*
8306          * 0 - RF kill not enabled
8307          * 1 - SW based RF kill active (sysfs)
8308          * 2 - HW based RF kill active
8309          * 3 - Both HW and SW based RF kill active
8310          */
8311         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8312         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8313                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8314
8315         return sprintf(buf, "%i\n", val);
8316 }
8317
8318 static ssize_t store_rf_kill(struct device *d,
8319                              struct device_attribute *attr,
8320                              const char *buf, size_t count)
8321 {
8322         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8323
8324         mutex_lock(&priv->mutex);
8325         iwl4965_radio_kill_sw(priv, buf[0] == '1');
8326         mutex_unlock(&priv->mutex);
8327
8328         return count;
8329 }
8330
8331 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8332
8333 static ssize_t show_temperature(struct device *d,
8334                                 struct device_attribute *attr, char *buf)
8335 {
8336         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8337
8338         if (!iwl4965_is_alive(priv))
8339                 return -EAGAIN;
8340
8341         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8342 }
8343
8344 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8345
8346 static ssize_t show_rs_window(struct device *d,
8347                               struct device_attribute *attr,
8348                               char *buf)
8349 {
8350         struct iwl4965_priv *priv = d->driver_data;
8351         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8352 }
8353 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8354
8355 static ssize_t show_tx_power(struct device *d,
8356                              struct device_attribute *attr, char *buf)
8357 {
8358         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8359         return sprintf(buf, "%d\n", priv->user_txpower_limit);
8360 }
8361
8362 static ssize_t store_tx_power(struct device *d,
8363                               struct device_attribute *attr,
8364                               const char *buf, size_t count)
8365 {
8366         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8367         char *p = (char *)buf;
8368         u32 val;
8369
8370         val = simple_strtoul(p, &p, 10);
8371         if (p == buf)
8372                 printk(KERN_INFO DRV_NAME
8373                        ": %s is not in decimal form.\n", buf);
8374         else
8375                 iwl4965_hw_reg_set_txpower(priv, val);
8376
8377         return count;
8378 }
8379
8380 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8381
8382 static ssize_t show_flags(struct device *d,
8383                           struct device_attribute *attr, char *buf)
8384 {
8385         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8386
8387         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8388 }
8389
8390 static ssize_t store_flags(struct device *d,
8391                            struct device_attribute *attr,
8392                            const char *buf, size_t count)
8393 {
8394         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8395         u32 flags = simple_strtoul(buf, NULL, 0);
8396
8397         mutex_lock(&priv->mutex);
8398         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8399                 /* Cancel any currently running scans... */
8400                 if (iwl4965_scan_cancel_timeout(priv, 100))
8401                         IWL_WARNING("Could not cancel scan.\n");
8402                 else {
8403                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8404                                        flags);
8405                         priv->staging_rxon.flags = cpu_to_le32(flags);
8406                         iwl4965_commit_rxon(priv);
8407                 }
8408         }
8409         mutex_unlock(&priv->mutex);
8410
8411         return count;
8412 }
8413
8414 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8415
8416 static ssize_t show_filter_flags(struct device *d,
8417                                  struct device_attribute *attr, char *buf)
8418 {
8419         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8420
8421         return sprintf(buf, "0x%04X\n",
8422                 le32_to_cpu(priv->active_rxon.filter_flags));
8423 }
8424
8425 static ssize_t store_filter_flags(struct device *d,
8426                                   struct device_attribute *attr,
8427                                   const char *buf, size_t count)
8428 {
8429         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8430         u32 filter_flags = simple_strtoul(buf, NULL, 0);
8431
8432         mutex_lock(&priv->mutex);
8433         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8434                 /* Cancel any currently running scans... */
8435                 if (iwl4965_scan_cancel_timeout(priv, 100))
8436                         IWL_WARNING("Could not cancel scan.\n");
8437                 else {
8438                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8439                                        "0x%04X\n", filter_flags);
8440                         priv->staging_rxon.filter_flags =
8441                                 cpu_to_le32(filter_flags);
8442                         iwl4965_commit_rxon(priv);
8443                 }
8444         }
8445         mutex_unlock(&priv->mutex);
8446
8447         return count;
8448 }
8449
8450 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8451                    store_filter_flags);
8452
8453 static ssize_t show_tune(struct device *d,
8454                          struct device_attribute *attr, char *buf)
8455 {
8456         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8457
8458         return sprintf(buf, "0x%04X\n",
8459                        (priv->phymode << 8) |
8460                         le16_to_cpu(priv->active_rxon.channel));
8461 }
8462
8463 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode);
8464
8465 static ssize_t store_tune(struct device *d,
8466                           struct device_attribute *attr,
8467                           const char *buf, size_t count)
8468 {
8469         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8470         char *p = (char *)buf;
8471         u16 tune = simple_strtoul(p, &p, 0);
8472         u8 phymode = (tune >> 8) & 0xff;
8473         u16 channel = tune & 0xff;
8474
8475         IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8476
8477         mutex_lock(&priv->mutex);
8478         if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8479             (priv->phymode != phymode)) {
8480                 const struct iwl4965_channel_info *ch_info;
8481
8482                 ch_info = iwl4965_get_channel_info(priv, phymode, channel);
8483                 if (!ch_info) {
8484                         IWL_WARNING("Requested invalid phymode/channel "
8485                                     "combination: %d %d\n", phymode, channel);
8486                         mutex_unlock(&priv->mutex);
8487                         return -EINVAL;
8488                 }
8489
8490                 /* Cancel any currently running scans... */
8491                 if (iwl4965_scan_cancel_timeout(priv, 100))
8492                         IWL_WARNING("Could not cancel scan.\n");
8493                 else {
8494                         IWL_DEBUG_INFO("Committing phymode and "
8495                                        "rxon.channel = %d %d\n",
8496                                        phymode, channel);
8497
8498                         iwl4965_set_rxon_channel(priv, phymode, channel);
8499                         iwl4965_set_flags_for_phymode(priv, phymode);
8500
8501                         iwl4965_set_rate(priv);
8502                         iwl4965_commit_rxon(priv);
8503                 }
8504         }
8505         mutex_unlock(&priv->mutex);
8506
8507         return count;
8508 }
8509
8510 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8511
8512 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8513
8514 static ssize_t show_measurement(struct device *d,
8515                                 struct device_attribute *attr, char *buf)
8516 {
8517         struct iwl4965_priv *priv = dev_get_drvdata(d);
8518         struct iwl4965_spectrum_notification measure_report;
8519         u32 size = sizeof(measure_report), len = 0, ofs = 0;
8520         u8 *data = (u8 *) & measure_report;
8521         unsigned long flags;
8522
8523         spin_lock_irqsave(&priv->lock, flags);
8524         if (!(priv->measurement_status & MEASUREMENT_READY)) {
8525                 spin_unlock_irqrestore(&priv->lock, flags);
8526                 return 0;
8527         }
8528         memcpy(&measure_report, &priv->measure_report, size);
8529         priv->measurement_status = 0;
8530         spin_unlock_irqrestore(&priv->lock, flags);
8531
8532         while (size && (PAGE_SIZE - len)) {
8533                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8534                                    PAGE_SIZE - len, 1);
8535                 len = strlen(buf);
8536                 if (PAGE_SIZE - len)
8537                         buf[len++] = '\n';
8538
8539                 ofs += 16;
8540                 size -= min(size, 16U);
8541         }
8542
8543         return len;
8544 }
8545
8546 static ssize_t store_measurement(struct device *d,
8547                                  struct device_attribute *attr,
8548                                  const char *buf, size_t count)
8549 {
8550         struct iwl4965_priv *priv = dev_get_drvdata(d);
8551         struct ieee80211_measurement_params params = {
8552                 .channel = le16_to_cpu(priv->active_rxon.channel),
8553                 .start_time = cpu_to_le64(priv->last_tsf),
8554                 .duration = cpu_to_le16(1),
8555         };
8556         u8 type = IWL_MEASURE_BASIC;
8557         u8 buffer[32];
8558         u8 channel;
8559
8560         if (count) {
8561                 char *p = buffer;
8562                 strncpy(buffer, buf, min(sizeof(buffer), count));
8563                 channel = simple_strtoul(p, NULL, 0);
8564                 if (channel)
8565                         params.channel = channel;
8566
8567                 p = buffer;
8568                 while (*p && *p != ' ')
8569                         p++;
8570                 if (*p)
8571                         type = simple_strtoul(p + 1, NULL, 0);
8572         }
8573
8574         IWL_DEBUG_INFO("Invoking measurement of type %d on "
8575                        "channel %d (for '%s')\n", type, params.channel, buf);
8576         iwl4965_get_measurement(priv, &params, type);
8577
8578         return count;
8579 }
8580
8581 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8582                    show_measurement, store_measurement);
8583 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8584
8585 static ssize_t store_retry_rate(struct device *d,
8586                                 struct device_attribute *attr,
8587                                 const char *buf, size_t count)
8588 {
8589         struct iwl4965_priv *priv = dev_get_drvdata(d);
8590
8591         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8592         if (priv->retry_rate <= 0)
8593                 priv->retry_rate = 1;
8594
8595         return count;
8596 }
8597
8598 static ssize_t show_retry_rate(struct device *d,
8599                                struct device_attribute *attr, char *buf)
8600 {
8601         struct iwl4965_priv *priv = dev_get_drvdata(d);
8602         return sprintf(buf, "%d", priv->retry_rate);
8603 }
8604
8605 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8606                    store_retry_rate);
8607
8608 static ssize_t store_power_level(struct device *d,
8609                                  struct device_attribute *attr,
8610                                  const char *buf, size_t count)
8611 {
8612         struct iwl4965_priv *priv = dev_get_drvdata(d);
8613         int rc;
8614         int mode;
8615
8616         mode = simple_strtoul(buf, NULL, 0);
8617         mutex_lock(&priv->mutex);
8618
8619         if (!iwl4965_is_ready(priv)) {
8620                 rc = -EAGAIN;
8621                 goto out;
8622         }
8623
8624         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8625                 mode = IWL_POWER_AC;
8626         else
8627                 mode |= IWL_POWER_ENABLED;
8628
8629         if (mode != priv->power_mode) {
8630                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8631                 if (rc) {
8632                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8633                         goto out;
8634                 }
8635                 priv->power_mode = mode;
8636         }
8637
8638         rc = count;
8639
8640  out:
8641         mutex_unlock(&priv->mutex);
8642         return rc;
8643 }
8644
8645 #define MAX_WX_STRING 80
8646
8647 /* Values are in microsecond */
8648 static const s32 timeout_duration[] = {
8649         350000,
8650         250000,
8651         75000,
8652         37000,
8653         25000,
8654 };
8655 static const s32 period_duration[] = {
8656         400000,
8657         700000,
8658         1000000,
8659         1000000,
8660         1000000
8661 };
8662
8663 static ssize_t show_power_level(struct device *d,
8664                                 struct device_attribute *attr, char *buf)
8665 {
8666         struct iwl4965_priv *priv = dev_get_drvdata(d);
8667         int level = IWL_POWER_LEVEL(priv->power_mode);
8668         char *p = buf;
8669
8670         p += sprintf(p, "%d ", level);
8671         switch (level) {
8672         case IWL_POWER_MODE_CAM:
8673         case IWL_POWER_AC:
8674                 p += sprintf(p, "(AC)");
8675                 break;
8676         case IWL_POWER_BATTERY:
8677                 p += sprintf(p, "(BATTERY)");
8678                 break;
8679         default:
8680                 p += sprintf(p,
8681                              "(Timeout %dms, Period %dms)",
8682                              timeout_duration[level - 1] / 1000,
8683                              period_duration[level - 1] / 1000);
8684         }
8685
8686         if (!(priv->power_mode & IWL_POWER_ENABLED))
8687                 p += sprintf(p, " OFF\n");
8688         else
8689                 p += sprintf(p, " \n");
8690
8691         return (p - buf + 1);
8692
8693 }
8694
8695 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8696                    store_power_level);
8697
8698 static ssize_t show_channels(struct device *d,
8699                              struct device_attribute *attr, char *buf)
8700 {
8701         struct iwl4965_priv *priv = dev_get_drvdata(d);
8702         int len = 0, i;
8703         struct ieee80211_channel *channels = NULL;
8704         const struct ieee80211_hw_mode *hw_mode = NULL;
8705         int count = 0;
8706
8707         if (!iwl4965_is_ready(priv))
8708                 return -EAGAIN;
8709
8710         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211G);
8711         if (!hw_mode)
8712                 hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211B);
8713         if (hw_mode) {
8714                 channels = hw_mode->channels;
8715                 count = hw_mode->num_channels;
8716         }
8717
8718         len +=
8719             sprintf(&buf[len],
8720                     "Displaying %d channels in 2.4GHz band "
8721                     "(802.11bg):\n", count);
8722
8723         for (i = 0; i < count; i++)
8724                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8725                                channels[i].chan,
8726                                channels[i].power_level,
8727                                channels[i].
8728                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8729                                " (IEEE 802.11h required)" : "",
8730                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8731                                 || (channels[i].
8732                                     flag &
8733                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8734                                ", IBSS",
8735                                channels[i].
8736                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8737                                "active/passive" : "passive only");
8738
8739         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211A);
8740         if (hw_mode) {
8741                 channels = hw_mode->channels;
8742                 count = hw_mode->num_channels;
8743         } else {
8744                 channels = NULL;
8745                 count = 0;
8746         }
8747
8748         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8749                        "(802.11a):\n", count);
8750
8751         for (i = 0; i < count; i++)
8752                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8753                                channels[i].chan,
8754                                channels[i].power_level,
8755                                channels[i].
8756                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8757                                " (IEEE 802.11h required)" : "",
8758                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8759                                 || (channels[i].
8760                                     flag &
8761                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8762                                ", IBSS",
8763                                channels[i].
8764                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8765                                "active/passive" : "passive only");
8766
8767         return len;
8768 }
8769
8770 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8771
8772 static ssize_t show_statistics(struct device *d,
8773                                struct device_attribute *attr, char *buf)
8774 {
8775         struct iwl4965_priv *priv = dev_get_drvdata(d);
8776         u32 size = sizeof(struct iwl4965_notif_statistics);
8777         u32 len = 0, ofs = 0;
8778         u8 *data = (u8 *) & priv->statistics;
8779         int rc = 0;
8780
8781         if (!iwl4965_is_alive(priv))
8782                 return -EAGAIN;
8783
8784         mutex_lock(&priv->mutex);
8785         rc = iwl4965_send_statistics_request(priv);
8786         mutex_unlock(&priv->mutex);
8787
8788         if (rc) {
8789                 len = sprintf(buf,
8790                               "Error sending statistics request: 0x%08X\n", rc);
8791                 return len;
8792         }
8793
8794         while (size && (PAGE_SIZE - len)) {
8795                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8796                                    PAGE_SIZE - len, 1);
8797                 len = strlen(buf);
8798                 if (PAGE_SIZE - len)
8799                         buf[len++] = '\n';
8800
8801                 ofs += 16;
8802                 size -= min(size, 16U);
8803         }
8804
8805         return len;
8806 }
8807
8808 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8809
8810 static ssize_t show_antenna(struct device *d,
8811                             struct device_attribute *attr, char *buf)
8812 {
8813         struct iwl4965_priv *priv = dev_get_drvdata(d);
8814
8815         if (!iwl4965_is_alive(priv))
8816                 return -EAGAIN;
8817
8818         return sprintf(buf, "%d\n", priv->antenna);
8819 }
8820
8821 static ssize_t store_antenna(struct device *d,
8822                              struct device_attribute *attr,
8823                              const char *buf, size_t count)
8824 {
8825         int ant;
8826         struct iwl4965_priv *priv = dev_get_drvdata(d);
8827
8828         if (count == 0)
8829                 return 0;
8830
8831         if (sscanf(buf, "%1i", &ant) != 1) {
8832                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8833                 return count;
8834         }
8835
8836         if ((ant >= 0) && (ant <= 2)) {
8837                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8838                 priv->antenna = (enum iwl4965_antenna)ant;
8839         } else
8840                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8841
8842
8843         return count;
8844 }
8845
8846 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8847
8848 static ssize_t show_status(struct device *d,
8849                            struct device_attribute *attr, char *buf)
8850 {
8851         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8852         if (!iwl4965_is_alive(priv))
8853                 return -EAGAIN;
8854         return sprintf(buf, "0x%08x\n", (int)priv->status);
8855 }
8856
8857 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8858
8859 static ssize_t dump_error_log(struct device *d,
8860                               struct device_attribute *attr,
8861                               const char *buf, size_t count)
8862 {
8863         char *p = (char *)buf;
8864
8865         if (p[0] == '1')
8866                 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8867
8868         return strnlen(buf, count);
8869 }
8870
8871 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8872
8873 static ssize_t dump_event_log(struct device *d,
8874                               struct device_attribute *attr,
8875                               const char *buf, size_t count)
8876 {
8877         char *p = (char *)buf;
8878
8879         if (p[0] == '1')
8880                 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8881
8882         return strnlen(buf, count);
8883 }
8884
8885 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8886
8887 /*****************************************************************************
8888  *
8889  * driver setup and teardown
8890  *
8891  *****************************************************************************/
8892
8893 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8894 {
8895         priv->workqueue = create_workqueue(DRV_NAME);
8896
8897         init_waitqueue_head(&priv->wait_command_queue);
8898
8899         INIT_WORK(&priv->up, iwl4965_bg_up);
8900         INIT_WORK(&priv->restart, iwl4965_bg_restart);
8901         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8902         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8903         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8904         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8905         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8906         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8907         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8908         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8909         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8910         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8911
8912         iwl4965_hw_setup_deferred_work(priv);
8913
8914         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8915                      iwl4965_irq_tasklet, (unsigned long)priv);
8916 }
8917
8918 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
8919 {
8920         iwl4965_hw_cancel_deferred_work(priv);
8921
8922         cancel_delayed_work_sync(&priv->init_alive_start);
8923         cancel_delayed_work(&priv->scan_check);
8924         cancel_delayed_work(&priv->alive_start);
8925         cancel_delayed_work(&priv->post_associate);
8926         cancel_work_sync(&priv->beacon_update);
8927 }
8928
8929 static struct attribute *iwl4965_sysfs_entries[] = {
8930         &dev_attr_antenna.attr,
8931         &dev_attr_channels.attr,
8932         &dev_attr_dump_errors.attr,
8933         &dev_attr_dump_events.attr,
8934         &dev_attr_flags.attr,
8935         &dev_attr_filter_flags.attr,
8936 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8937         &dev_attr_measurement.attr,
8938 #endif
8939         &dev_attr_power_level.attr,
8940         &dev_attr_retry_rate.attr,
8941         &dev_attr_rf_kill.attr,
8942         &dev_attr_rs_window.attr,
8943         &dev_attr_statistics.attr,
8944         &dev_attr_status.attr,
8945         &dev_attr_temperature.attr,
8946         &dev_attr_tune.attr,
8947         &dev_attr_tx_power.attr,
8948
8949         NULL
8950 };
8951
8952 static struct attribute_group iwl4965_attribute_group = {
8953         .name = NULL,           /* put in device directory */
8954         .attrs = iwl4965_sysfs_entries,
8955 };
8956
8957 static struct ieee80211_ops iwl4965_hw_ops = {
8958         .tx = iwl4965_mac_tx,
8959         .start = iwl4965_mac_start,
8960         .stop = iwl4965_mac_stop,
8961         .add_interface = iwl4965_mac_add_interface,
8962         .remove_interface = iwl4965_mac_remove_interface,
8963         .config = iwl4965_mac_config,
8964         .config_interface = iwl4965_mac_config_interface,
8965         .configure_filter = iwl4965_configure_filter,
8966         .set_key = iwl4965_mac_set_key,
8967         .get_stats = iwl4965_mac_get_stats,
8968         .get_tx_stats = iwl4965_mac_get_tx_stats,
8969         .conf_tx = iwl4965_mac_conf_tx,
8970         .get_tsf = iwl4965_mac_get_tsf,
8971         .reset_tsf = iwl4965_mac_reset_tsf,
8972         .beacon_update = iwl4965_mac_beacon_update,
8973         .erp_ie_changed = iwl4965_mac_erp_ie_changed,
8974 #ifdef CONFIG_IWL4965_HT
8975         .conf_ht = iwl4965_mac_conf_ht,
8976 #ifdef CONFIG_IWL4965_HT_AGG
8977         .ht_tx_agg_start = iwl4965_mac_ht_tx_agg_start,
8978         .ht_tx_agg_stop = iwl4965_mac_ht_tx_agg_stop,
8979         .ht_rx_agg_start = iwl4965_mac_ht_rx_agg_start,
8980         .ht_rx_agg_stop = iwl4965_mac_ht_rx_agg_stop,
8981 #endif  /* CONFIG_IWL4965_HT_AGG */
8982 #endif  /* CONFIG_IWL4965_HT */
8983         .hw_scan = iwl4965_mac_hw_scan
8984 };
8985
8986 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8987 {
8988         int err = 0;
8989         struct iwl4965_priv *priv;
8990         struct ieee80211_hw *hw;
8991         int i;
8992
8993         /* Disabling hardware scan means that mac80211 will perform scans
8994          * "the hard way", rather than using device's scan. */
8995         if (iwl4965_param_disable_hw_scan) {
8996                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8997                 iwl4965_hw_ops.hw_scan = NULL;
8998         }
8999
9000         if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
9001             (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
9002                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
9003                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
9004                 err = -EINVAL;
9005                 goto out;
9006         }
9007
9008         /* mac80211 allocates memory for this device instance, including
9009          *   space for this driver's private structure */
9010         hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
9011         if (hw == NULL) {
9012                 IWL_ERROR("Can not allocate network device\n");
9013                 err = -ENOMEM;
9014                 goto out;
9015         }
9016         SET_IEEE80211_DEV(hw, &pdev->dev);
9017
9018         hw->rate_control_algorithm = "iwl-4965-rs";
9019
9020         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
9021         priv = hw->priv;
9022         priv->hw = hw;
9023
9024         priv->pci_dev = pdev;
9025         priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
9026 #ifdef CONFIG_IWL4965_DEBUG
9027         iwl4965_debug_level = iwl4965_param_debug;
9028         atomic_set(&priv->restrict_refcnt, 0);
9029 #endif
9030         priv->retry_rate = 1;
9031
9032         priv->ibss_beacon = NULL;
9033
9034         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
9035          *   the range of signal quality values that we'll provide.
9036          * Negative values for level/noise indicate that we'll provide dBm.
9037          * For WE, at least, non-0 values here *enable* display of values
9038          *   in app (iwconfig). */
9039         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
9040         hw->max_noise = -20;    /* noise level, negative indicates dBm */
9041         hw->max_signal = 100;   /* link quality indication (%) */
9042
9043         /* Tell mac80211 our Tx characteristics */
9044         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
9045
9046         /* Default value; 4 EDCA QOS priorities */
9047         hw->queues = 4;
9048 #ifdef CONFIG_IWL4965_HT
9049 #ifdef CONFIG_IWL4965_HT_AGG
9050         /* Enhanced value; more queues, to support 11n aggregation */
9051         hw->queues = 16;
9052 #endif /* CONFIG_IWL4965_HT_AGG */
9053 #endif /* CONFIG_IWL4965_HT */
9054
9055         spin_lock_init(&priv->lock);
9056         spin_lock_init(&priv->power_data.lock);
9057         spin_lock_init(&priv->sta_lock);
9058         spin_lock_init(&priv->hcmd_lock);
9059         spin_lock_init(&priv->lq_mngr.lock);
9060
9061         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9062                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9063
9064         INIT_LIST_HEAD(&priv->free_frames);
9065
9066         mutex_init(&priv->mutex);
9067         if (pci_enable_device(pdev)) {
9068                 err = -ENODEV;
9069                 goto out_ieee80211_free_hw;
9070         }
9071
9072         pci_set_master(pdev);
9073
9074         /* Clear the driver's (not device's) station table */
9075         iwl4965_clear_stations_table(priv);
9076
9077         priv->data_retry_limit = -1;
9078         priv->ieee_channels = NULL;
9079         priv->ieee_rates = NULL;
9080         priv->phymode = -1;
9081
9082         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9083         if (!err)
9084                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9085         if (err) {
9086                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9087                 goto out_pci_disable_device;
9088         }
9089
9090         pci_set_drvdata(pdev, priv);
9091         err = pci_request_regions(pdev, DRV_NAME);
9092         if (err)
9093                 goto out_pci_disable_device;
9094
9095         /* We disable the RETRY_TIMEOUT register (0x41) to keep
9096          * PCI Tx retries from interfering with C3 CPU state */
9097         pci_write_config_byte(pdev, 0x41, 0x00);
9098
9099         priv->hw_base = pci_iomap(pdev, 0, 0);
9100         if (!priv->hw_base) {
9101                 err = -ENODEV;
9102                 goto out_pci_release_regions;
9103         }
9104
9105         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9106                         (unsigned long long) pci_resource_len(pdev, 0));
9107         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9108
9109         /* Initialize module parameter values here */
9110
9111         /* Disable radio (SW RF KILL) via parameter when loading driver */
9112         if (iwl4965_param_disable) {
9113                 set_bit(STATUS_RF_KILL_SW, &priv->status);
9114                 IWL_DEBUG_INFO("Radio disabled.\n");
9115         }
9116
9117         priv->iw_mode = IEEE80211_IF_TYPE_STA;
9118
9119         priv->ps_mode = 0;
9120         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9121         priv->valid_antenna = 0x7;      /* assume all 3 connected */
9122         priv->ps_mode = IWL_MIMO_PS_NONE;
9123
9124         /* Choose which receivers/antennas to use */
9125         iwl4965_set_rxon_chain(priv);
9126
9127         printk(KERN_INFO DRV_NAME
9128                ": Detected Intel Wireless WiFi Link 4965AGN\n");
9129
9130         /* Device-specific setup */
9131         if (iwl4965_hw_set_hw_setting(priv)) {
9132                 IWL_ERROR("failed to set hw settings\n");
9133                 mutex_unlock(&priv->mutex);
9134                 goto out_iounmap;
9135         }
9136
9137 #ifdef CONFIG_IWL4965_QOS
9138         if (iwl4965_param_qos_enable)
9139                 priv->qos_data.qos_enable = 1;
9140
9141         iwl4965_reset_qos(priv);
9142
9143         priv->qos_data.qos_active = 0;
9144         priv->qos_data.qos_cap.val = 0;
9145 #endif /* CONFIG_IWL4965_QOS */
9146
9147         iwl4965_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9148         iwl4965_setup_deferred_work(priv);
9149         iwl4965_setup_rx_handlers(priv);
9150
9151         priv->rates_mask = IWL_RATES_MASK;
9152         /* If power management is turned on, default to AC mode */
9153         priv->power_mode = IWL_POWER_AC;
9154         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9155
9156         iwl4965_disable_interrupts(priv);
9157
9158         pci_enable_msi(pdev);
9159
9160         err = request_irq(pdev->irq, iwl4965_isr, IRQF_SHARED, DRV_NAME, priv);
9161         if (err) {
9162                 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9163                 goto out_disable_msi;
9164         }
9165
9166         mutex_lock(&priv->mutex);
9167
9168         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9169         if (err) {
9170                 IWL_ERROR("failed to create sysfs device attributes\n");
9171                 mutex_unlock(&priv->mutex);
9172                 goto out_release_irq;
9173         }
9174
9175         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9176          * ucode filename and max sizes are card-specific. */
9177         err = iwl4965_read_ucode(priv);
9178         if (err) {
9179                 IWL_ERROR("Could not read microcode: %d\n", err);
9180                 mutex_unlock(&priv->mutex);
9181                 goto out_pci_alloc;
9182         }
9183
9184         mutex_unlock(&priv->mutex);
9185
9186         IWL_DEBUG_INFO("Queueing UP work.\n");
9187
9188         queue_work(priv->workqueue, &priv->up);
9189
9190         return 0;
9191
9192  out_pci_alloc:
9193         iwl4965_dealloc_ucode_pci(priv);
9194
9195         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9196
9197  out_release_irq:
9198         free_irq(pdev->irq, priv);
9199
9200  out_disable_msi:
9201         pci_disable_msi(pdev);
9202         destroy_workqueue(priv->workqueue);
9203         priv->workqueue = NULL;
9204         iwl4965_unset_hw_setting(priv);
9205
9206  out_iounmap:
9207         pci_iounmap(pdev, priv->hw_base);
9208  out_pci_release_regions:
9209         pci_release_regions(pdev);
9210  out_pci_disable_device:
9211         pci_disable_device(pdev);
9212         pci_set_drvdata(pdev, NULL);
9213  out_ieee80211_free_hw:
9214         ieee80211_free_hw(priv->hw);
9215  out:
9216         return err;
9217 }
9218
9219 static void iwl4965_pci_remove(struct pci_dev *pdev)
9220 {
9221         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9222         struct list_head *p, *q;
9223         int i;
9224
9225         if (!priv)
9226                 return;
9227
9228         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9229
9230         set_bit(STATUS_EXIT_PENDING, &priv->status);
9231
9232         iwl4965_down(priv);
9233
9234         /* Free MAC hash list for ADHOC */
9235         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9236                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9237                         list_del(p);
9238                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9239                 }
9240         }
9241
9242         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9243
9244         iwl4965_dealloc_ucode_pci(priv);
9245
9246         if (priv->rxq.bd)
9247                 iwl4965_rx_queue_free(priv, &priv->rxq);
9248         iwl4965_hw_txq_ctx_free(priv);
9249
9250         iwl4965_unset_hw_setting(priv);
9251         iwl4965_clear_stations_table(priv);
9252
9253         if (priv->mac80211_registered) {
9254                 ieee80211_unregister_hw(priv->hw);
9255                 iwl4965_rate_control_unregister(priv->hw);
9256         }
9257
9258         /*netif_stop_queue(dev); */
9259         flush_workqueue(priv->workqueue);
9260
9261         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9262          * priv->workqueue... so we can't take down the workqueue
9263          * until now... */
9264         destroy_workqueue(priv->workqueue);
9265         priv->workqueue = NULL;
9266
9267         free_irq(pdev->irq, priv);
9268         pci_disable_msi(pdev);
9269         pci_iounmap(pdev, priv->hw_base);
9270         pci_release_regions(pdev);
9271         pci_disable_device(pdev);
9272         pci_set_drvdata(pdev, NULL);
9273
9274         kfree(priv->channel_info);
9275
9276         kfree(priv->ieee_channels);
9277         kfree(priv->ieee_rates);
9278
9279         if (priv->ibss_beacon)
9280                 dev_kfree_skb(priv->ibss_beacon);
9281
9282         ieee80211_free_hw(priv->hw);
9283 }
9284
9285 #ifdef CONFIG_PM
9286
9287 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9288 {
9289         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9290
9291         set_bit(STATUS_IN_SUSPEND, &priv->status);
9292
9293         /* Take down the device; powers it off, etc. */
9294         iwl4965_down(priv);
9295
9296         if (priv->mac80211_registered)
9297                 ieee80211_stop_queues(priv->hw);
9298
9299         pci_save_state(pdev);
9300         pci_disable_device(pdev);
9301         pci_set_power_state(pdev, PCI_D3hot);
9302
9303         return 0;
9304 }
9305
9306 static void iwl4965_resume(struct iwl4965_priv *priv)
9307 {
9308         unsigned long flags;
9309
9310         /* The following it a temporary work around due to the
9311          * suspend / resume not fully initializing the NIC correctly.
9312          * Without all of the following, resume will not attempt to take
9313          * down the NIC (it shouldn't really need to) and will just try
9314          * and bring the NIC back up.  However that fails during the
9315          * ucode verification process.  This then causes iwl4965_down to be
9316          * called *after* iwl4965_hw_nic_init() has succeeded -- which
9317          * then lets the next init sequence succeed.  So, we've
9318          * replicated all of that NIC init code here... */
9319
9320         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9321
9322         iwl4965_hw_nic_init(priv);
9323
9324         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9325         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9326                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9327         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9328         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9329         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9330
9331         /* tell the device to stop sending interrupts */
9332         iwl4965_disable_interrupts(priv);
9333
9334         spin_lock_irqsave(&priv->lock, flags);
9335         iwl4965_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9336
9337         if (!iwl4965_grab_nic_access(priv)) {
9338                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
9339                                 APMG_CLK_VAL_DMA_CLK_RQT);
9340                 iwl4965_release_nic_access(priv);
9341         }
9342         spin_unlock_irqrestore(&priv->lock, flags);
9343
9344         udelay(5);
9345
9346         iwl4965_hw_nic_reset(priv);
9347
9348         /* Bring the device back up */
9349         clear_bit(STATUS_IN_SUSPEND, &priv->status);
9350         queue_work(priv->workqueue, &priv->up);
9351 }
9352
9353 static int iwl4965_pci_resume(struct pci_dev *pdev)
9354 {
9355         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9356         int err;
9357
9358         printk(KERN_INFO "Coming out of suspend...\n");
9359
9360         pci_set_power_state(pdev, PCI_D0);
9361         err = pci_enable_device(pdev);
9362         pci_restore_state(pdev);
9363
9364         /*
9365          * Suspend/Resume resets the PCI configuration space, so we have to
9366          * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9367          * from interfering with C3 CPU state. pci_restore_state won't help
9368          * here since it only restores the first 64 bytes pci config header.
9369          */
9370         pci_write_config_byte(pdev, 0x41, 0x00);
9371
9372         iwl4965_resume(priv);
9373
9374         return 0;
9375 }
9376
9377 #endif /* CONFIG_PM */
9378
9379 /*****************************************************************************
9380  *
9381  * driver and module entry point
9382  *
9383  *****************************************************************************/
9384
9385 static struct pci_driver iwl4965_driver = {
9386         .name = DRV_NAME,
9387         .id_table = iwl4965_hw_card_ids,
9388         .probe = iwl4965_pci_probe,
9389         .remove = __devexit_p(iwl4965_pci_remove),
9390 #ifdef CONFIG_PM
9391         .suspend = iwl4965_pci_suspend,
9392         .resume = iwl4965_pci_resume,
9393 #endif
9394 };
9395
9396 static int __init iwl4965_init(void)
9397 {
9398
9399         int ret;
9400         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9401         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9402         ret = pci_register_driver(&iwl4965_driver);
9403         if (ret) {
9404                 IWL_ERROR("Unable to initialize PCI module\n");
9405                 return ret;
9406         }
9407 #ifdef CONFIG_IWL4965_DEBUG
9408         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9409         if (ret) {
9410                 IWL_ERROR("Unable to create driver sysfs file\n");
9411                 pci_unregister_driver(&iwl4965_driver);
9412                 return ret;
9413         }
9414 #endif
9415
9416         return ret;
9417 }
9418
9419 static void __exit iwl4965_exit(void)
9420 {
9421 #ifdef CONFIG_IWL4965_DEBUG
9422         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9423 #endif
9424         pci_unregister_driver(&iwl4965_driver);
9425 }
9426
9427 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9428 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9429 module_param_named(disable, iwl4965_param_disable, int, 0444);
9430 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9431 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9432 MODULE_PARM_DESC(hwcrypto,
9433                  "using hardware crypto engine (default 0 [software])\n");
9434 module_param_named(debug, iwl4965_param_debug, int, 0444);
9435 MODULE_PARM_DESC(debug, "debug output mask");
9436 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9437 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9438
9439 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9440 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9441
9442 /* QoS */
9443 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9444 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9445 module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
9446 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
9447
9448 module_exit(iwl4965_exit);
9449 module_init(iwl4965_init);