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/ieee80211_radiotap.h>
  45 #include <net/mac80211.h>
  46
  47 #include <asm/div64.h>
  48
  49 #include "iwl-4965.h"
  50 #include "iwl-helpers.h"
  51
  52 #ifdef CONFIG_IWL4965_DEBUG
  53 u32 iwl4965_debug_level;
  54 #endif
  55
  56 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
  57                                   struct iwl4965_tx_queue *txq);
  58
  59 /******************************************************************************
  60  *
  61  * module boiler plate
  62  *
  63  ******************************************************************************/
  64
  65 /* module parameters */
  66 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
  67 static int iwl4965_param_debug;    /* def: 0 = minimal debug log messages */
  68 static int iwl4965_param_disable;  /* def: enable radio */
  69 static int iwl4965_param_antenna;  /* def: 0 = both antennas (use diversity) */
  70 int iwl4965_param_hwcrypto;        /* def: using software encryption */
  71 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
  72 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
  73
  74 /*
  75  * module name, copyright, version, etc.
  76  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  77  */
  78
  79 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  80
  81 #ifdef CONFIG_IWL4965_DEBUG
  82 #define VD "d"
  83 #else
  84 #define VD
  85 #endif
  86
  87 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  88 #define VS "s"
  89 #else
  90 #define VS
  91 #endif
  92
  93 #define IWLWIFI_VERSION "1.1.19k" VD VS
  94 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
  95 #define DRV_VERSION     IWLWIFI_VERSION
  96
  97 /* Change firmware file name, using "-" and incrementing number,
  98  *   *only* when uCode interface or architecture changes so that it
  99  *   is not compatible with earlier drivers.
 100  * This number will also appear in << 8 position of 1st dword of uCode file */
 101 #define IWL4965_UCODE_API "-1"
 102
 103 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 104 MODULE_VERSION(DRV_VERSION);
 105 MODULE_AUTHOR(DRV_COPYRIGHT);
 106 MODULE_LICENSE("GPL");
 107
 108 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
 109 {
 110         u16 fc = le16_to_cpu(hdr->frame_control);
 111         int hdr_len = ieee80211_get_hdrlen(fc);
 112
 113         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 114                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 115         return NULL;
 116 }
 117
 118 static const struct ieee80211_hw_mode *iwl4965_get_hw_mode(
 119                 struct iwl4965_priv *priv, int mode)
 120 {
 121         int i;
 122
 123         for (i = 0; i < 3; i++)
 124                 if (priv->modes[i].mode == mode)
 125                         return &priv->modes[i];
 126
 127         return NULL;
 128 }
 129
 130 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 131 {
 132         /* Single white space is for Linksys APs */
 133         if (essid_len == 1 && essid[0] == ' ')
 134                 return 1;
 135
 136         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 137         while (essid_len) {
 138                 essid_len--;
 139                 if (essid[essid_len] != '\0')
 140                         return 0;
 141         }
 142
 143         return 1;
 144 }
 145
 146 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 147 {
 148         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 149         const char *s = essid;
 150         char *d = escaped;
 151
 152         if (iwl4965_is_empty_essid(essid, essid_len)) {
 153                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 154                 return escaped;
 155         }
 156
 157         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 158         while (essid_len--) {
 159                 if (*s == '\0') {
 160                         *d++ = '\\';
 161                         *d++ = '0';
 162                         s++;
 163                 } else
 164                         *d++ = *s++;
 165         }
 166         *d = '\0';
 167         return escaped;
 168 }
 169
 170 static void iwl4965_print_hex_dump(int level, void *p, u32 len)
 171 {
 172 #ifdef CONFIG_IWL4965_DEBUG
 173         if (!(iwl4965_debug_level & level))
 174                 return;
 175
 176         print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
 177                         p, len, 1);
 178 #endif
 179 }
 180
 181 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 182  * DMA services
 183  *
 184  * Theory of operation
 185  *
 186  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 187  * of buffer descriptors, each of which points to one or more data buffers for
 188  * the device to read from or fill.  Driver and device exchange status of each
 189  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 190  * entries in each circular buffer, to protect against confusing empty and full
 191  * queue states.
 192  *
 193  * The device reads or writes the data in the queues via the device's several
 194  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 195  *
 196  * For Tx queue, there are low mark and high mark limits. If, after queuing
 197  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 198  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 199  * Tx queue resumed.
 200  *
 201  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 202  * queue (#4) for sending commands to the device firmware, and 15 other
 203  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 204  *
 205  * See more detailed info in iwl-4965-hw.h.
 206  ***************************************************/
 207
 208 static int iwl4965_queue_space(const struct iwl4965_queue *q)
 209 {
 210         int s = q->read_ptr - q->write_ptr;
 211
 212         if (q->read_ptr > q->write_ptr)
 213                 s -= q->n_bd;
 214
 215         if (s <= 0)
 216                 s += q->n_window;
 217         /* keep some reserve to not confuse empty and full situations */
 218         s -= 2;
 219         if (s < 0)
 220                 s = 0;
 221         return s;
 222 }
 223
 224 /**
 225  * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
 226  * @index -- current index
 227  * @n_bd -- total number of entries in queue (must be power of 2)
 228  */
 229 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
 230 {
 231         return ++index & (n_bd - 1);
 232 }
 233
 234 /**
 235  * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
 236  * @index -- current index
 237  * @n_bd -- total number of entries in queue (must be power of 2)
 238  */
 239 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
 240 {
 241         return --index & (n_bd - 1);
 242 }
 243
 244 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 245 {
 246         return q->write_ptr > q->read_ptr ?
 247                 (i >= q->read_ptr && i < q->write_ptr) :
 248                 !(i < q->read_ptr && i >= q->write_ptr);
 249 }
 250
 251 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 252 {
 253         /* This is for scan command, the big buffer at end of command array */
 254         if (is_huge)
 255                 return q->n_window;     /* must be power of 2 */
 256
 257         /* Otherwise, use normal size buffers */
 258         return index & (q->n_window - 1);
 259 }
 260
 261 /**
 262  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 263  */
 264 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
 265                           int count, int slots_num, u32 id)
 266 {
 267         q->n_bd = count;
 268         q->n_window = slots_num;
 269         q->id = id;
 270
 271         /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
 272          * and iwl4965_queue_dec_wrap are broken. */
 273         BUG_ON(!is_power_of_2(count));
 274
 275         /* slots_num must be power-of-two size, otherwise
 276          * get_cmd_index is broken. */
 277         BUG_ON(!is_power_of_2(slots_num));
 278
 279         q->low_mark = q->n_window / 4;
 280         if (q->low_mark < 4)
 281                 q->low_mark = 4;
 282
 283         q->high_mark = q->n_window / 8;
 284         if (q->high_mark < 2)
 285                 q->high_mark = 2;
 286
 287         q->write_ptr = q->read_ptr = 0;
 288
 289         return 0;
 290 }
 291
 292 /**
 293  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 294  */
 295 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
 296                               struct iwl4965_tx_queue *txq, u32 id)
 297 {
 298         struct pci_dev *dev = priv->pci_dev;
 299
 300         /* Driver private data, only for Tx (not command) queues,
 301          * not shared with device. */
 302         if (id != IWL_CMD_QUEUE_NUM) {
 303                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 304                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 305                 if (!txq->txb) {
 306                         IWL_ERROR("kmalloc for auxiliary BD "
 307                                   "structures failed\n");
 308                         goto error;
 309                 }
 310         } else
 311                 txq->txb = NULL;
 312
 313         /* Circular buffer of transmit frame descriptors (TFDs),
 314          * shared with device */
 315         txq->bd = pci_alloc_consistent(dev,
 316                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 317                         &txq->q.dma_addr);
 318
 319         if (!txq->bd) {
 320                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 321                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 322                 goto error;
 323         }
 324         txq->q.id = id;
 325
 326         return 0;
 327
 328  error:
 329         if (txq->txb) {
 330                 kfree(txq->txb);
 331                 txq->txb = NULL;
 332         }
 333
 334         return -ENOMEM;
 335 }
 336
 337 /**
 338  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 339  */
 340 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
 341                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 342 {
 343         struct pci_dev *dev = priv->pci_dev;
 344         int len;
 345         int rc = 0;
 346
 347         /*
 348          * Alloc buffer array for commands (Tx or other types of commands).
 349          * For the command queue (#4), allocate command space + one big
 350          * command for scan, since scan command is very huge; the system will
 351          * not have two scans at the same time, so only one is needed.
 352          * For data Tx queues (all other queues), no super-size command
 353          * space is needed.
 354          */
 355         len = sizeof(struct iwl4965_cmd) * slots_num;
 356         if (txq_id == IWL_CMD_QUEUE_NUM)
 357                 len +=  IWL_MAX_SCAN_SIZE;
 358         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 359         if (!txq->cmd)
 360                 return -ENOMEM;
 361
 362         /* Alloc driver data array and TFD circular buffer */
 363         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 364         if (rc) {
 365                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 366
 367                 return -ENOMEM;
 368         }
 369         txq->need_update = 0;
 370
 371         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 372          * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
 373         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 374
 375         /* Initialize queue's high/low-water marks, and head/tail indexes */
 376         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 377
 378         /* Tell device where to find queue */
 379         iwl4965_hw_tx_queue_init(priv, txq);
 380
 381         return 0;
 382 }
 383
 384 /**
 385  * iwl4965_tx_queue_free - Deallocate DMA queue.
 386  * @txq: Transmit queue to deallocate.
 387  *
 388  * Empty queue by removing and destroying all BD's.
 389  * Free all buffers.
 390  * 0-fill, but do not free "txq" descriptor structure.
 391  */
 392 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
 393 {
 394         struct iwl4965_queue *q = &txq->q;
 395         struct pci_dev *dev = priv->pci_dev;
 396         int len;
 397
 398         if (q->n_bd == 0)
 399                 return;
 400
 401         /* first, empty all BD's */
 402         for (; q->write_ptr != q->read_ptr;
 403              q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
 404                 iwl4965_hw_txq_free_tfd(priv, txq);
 405
 406         len = sizeof(struct iwl4965_cmd) * q->n_window;
 407         if (q->id == IWL_CMD_QUEUE_NUM)
 408                 len += IWL_MAX_SCAN_SIZE;
 409
 410         /* De-alloc array of command/tx buffers */
 411         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 412
 413         /* De-alloc circular buffer of TFDs */
 414         if (txq->q.n_bd)
 415                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 416                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 417
 418         /* De-alloc array of per-TFD driver data */
 419         if (txq->txb) {
 420                 kfree(txq->txb);
 421                 txq->txb = NULL;
 422         }
 423
 424         /* 0-fill queue descriptor structure */
 425         memset(txq, 0, sizeof(*txq));
 426 }
 427
 428 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 429
 430 /*************** STATION TABLE MANAGEMENT ****
 431  * mac80211 should be examined to determine if sta_info is duplicating
 432  * the functionality provided here
 433  */
 434
 435 /**************************************************************/
 436
 437 #if 0 /* temporary disable till we add real remove station */
 438 /**
 439  * iwl4965_remove_station - Remove driver's knowledge of station.
 440  *
 441  * NOTE:  This does not remove station from device's station table.
 442  */
 443 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
 444 {
 445         int index = IWL_INVALID_STATION;
 446         int i;
 447         unsigned long flags;
 448
 449         spin_lock_irqsave(&priv->sta_lock, flags);
 450
 451         if (is_ap)
 452                 index = IWL_AP_ID;
 453         else if (is_broadcast_ether_addr(addr))
 454                 index = priv->hw_setting.bcast_sta_id;
 455         else
 456                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 457                         if (priv->stations[i].used &&
 458                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 459                                                 addr)) {
 460                                 index = i;
 461                                 break;
 462                         }
 463
 464         if (unlikely(index == IWL_INVALID_STATION))
 465                 goto out;
 466
 467         if (priv->stations[index].used) {
 468                 priv->stations[index].used = 0;
 469                 priv->num_stations--;
 470         }
 471
 472         BUG_ON(priv->num_stations < 0);
 473
 474 out:
 475         spin_unlock_irqrestore(&priv->sta_lock, flags);
 476         return 0;
 477 }
 478 #endif
 479
 480 /**
 481  * iwl4965_clear_stations_table - Clear the driver's station table
 482  *
 483  * NOTE:  This does not clear or otherwise alter the device's station table.
 484  */
 485 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
 486 {
 487         unsigned long flags;
 488
 489         spin_lock_irqsave(&priv->sta_lock, flags);
 490
 491         priv->num_stations = 0;
 492         memset(priv->stations, 0, sizeof(priv->stations));
 493
 494         spin_unlock_irqrestore(&priv->sta_lock, flags);
 495 }
 496
 497 /**
 498  * iwl4965_add_station_flags - Add station to tables in driver and device
 499  */
 500 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr, int is_ap, u8 flags)
 501 {
 502         int i;
 503         int index = IWL_INVALID_STATION;
 504         struct iwl4965_station_entry *station;
 505         unsigned long flags_spin;
 506         DECLARE_MAC_BUF(mac);
 507
 508         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 509         if (is_ap)
 510                 index = IWL_AP_ID;
 511         else if (is_broadcast_ether_addr(addr))
 512                 index = priv->hw_setting.bcast_sta_id;
 513         else
 514                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 515                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 516                                                 addr)) {
 517                                 index = i;
 518                                 break;
 519                         }
 520
 521                         if (!priv->stations[i].used &&
 522                             index == IWL_INVALID_STATION)
 523                                 index = i;
 524                 }
 525
 526
 527         /* These two conditions have the same outcome, but keep them separate
 528           since they have different meanings */
 529         if (unlikely(index == IWL_INVALID_STATION)) {
 530                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 531                 return index;
 532         }
 533
 534         if (priv->stations[index].used &&
 535             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 536                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 537                 return index;
 538         }
 539
 540
 541         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 542         station = &priv->stations[index];
 543         station->used = 1;
 544         priv->num_stations++;
 545
 546         /* Set up the REPLY_ADD_STA command to send to device */
 547         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 548         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 549         station->sta.mode = 0;
 550         station->sta.sta.sta_id = index;
 551         station->sta.station_flags = 0;
 552
 553 #ifdef CONFIG_IWL4965_HT
 554         /* BCAST station and IBSS stations do not work in HT mode */
 555         if (index != priv->hw_setting.bcast_sta_id &&
 556             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 557                 iwl4965_set_ht_add_station(priv, index);
 558 #endif /*CONFIG_IWL4965_HT*/
 559
 560         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 561
 562         /* Add station to device's station table */
 563         iwl4965_send_add_station(priv, &station->sta, flags);
 564         return index;
 565
 566 }
 567
 568 /*************** DRIVER STATUS FUNCTIONS   *****/
 569
 570 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
 571 {
 572         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 573          * set but EXIT_PENDING is not */
 574         return test_bit(STATUS_READY, &priv->status) &&
 575                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 576                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 577 }
 578
 579 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
 580 {
 581         return test_bit(STATUS_ALIVE, &priv->status);
 582 }
 583
 584 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
 585 {
 586         return test_bit(STATUS_INIT, &priv->status);
 587 }
 588
 589 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
 590 {
 591         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 592                test_bit(STATUS_RF_KILL_SW, &priv->status);
 593 }
 594
 595 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
 596 {
 597
 598         if (iwl4965_is_rfkill(priv))
 599                 return 0;
 600
 601         return iwl4965_is_ready(priv);
 602 }
 603
 604 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 605
 606 #define IWL_CMD(x) case x : return #x
 607
 608 static const char *get_cmd_string(u8 cmd)
 609 {
 610         switch (cmd) {
 611                 IWL_CMD(REPLY_ALIVE);
 612                 IWL_CMD(REPLY_ERROR);
 613                 IWL_CMD(REPLY_RXON);
 614                 IWL_CMD(REPLY_RXON_ASSOC);
 615                 IWL_CMD(REPLY_QOS_PARAM);
 616                 IWL_CMD(REPLY_RXON_TIMING);
 617                 IWL_CMD(REPLY_ADD_STA);
 618                 IWL_CMD(REPLY_REMOVE_STA);
 619                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 620                 IWL_CMD(REPLY_TX);
 621                 IWL_CMD(REPLY_RATE_SCALE);
 622                 IWL_CMD(REPLY_LEDS_CMD);
 623                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 624                 IWL_CMD(RADAR_NOTIFICATION);
 625                 IWL_CMD(REPLY_QUIET_CMD);
 626                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 627                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 628                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 629                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 630                 IWL_CMD(POWER_TABLE_CMD);
 631                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 632                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 633                 IWL_CMD(REPLY_SCAN_CMD);
 634                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 635                 IWL_CMD(SCAN_START_NOTIFICATION);
 636                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 637                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 638                 IWL_CMD(BEACON_NOTIFICATION);
 639                 IWL_CMD(REPLY_TX_BEACON);
 640                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 641                 IWL_CMD(QUIET_NOTIFICATION);
 642                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 643                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 644                 IWL_CMD(REPLY_BT_CONFIG);
 645                 IWL_CMD(REPLY_STATISTICS_CMD);
 646                 IWL_CMD(STATISTICS_NOTIFICATION);
 647                 IWL_CMD(REPLY_CARD_STATE_CMD);
 648                 IWL_CMD(CARD_STATE_NOTIFICATION);
 649                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 650                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
 651                 IWL_CMD(SENSITIVITY_CMD);
 652                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
 653                 IWL_CMD(REPLY_RX_PHY_CMD);
 654                 IWL_CMD(REPLY_RX_MPDU_CMD);
 655                 IWL_CMD(REPLY_4965_RX);
 656                 IWL_CMD(REPLY_COMPRESSED_BA);
 657         default:
 658                 return "UNKNOWN";
 659
 660         }
 661 }
 662
 663 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 664
 665 /**
 666  * iwl4965_enqueue_hcmd - enqueue a uCode command
 667  * @priv: device private data point
 668  * @cmd: a point to the ucode command structure
 669  *
 670  * The function returns < 0 values to indicate the operation is
 671  * failed. On success, it turns the index (> 0) of command in the
 672  * command queue.
 673  */
 674 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 675 {
 676         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 677         struct iwl4965_queue *q = &txq->q;
 678         struct iwl4965_tfd_frame *tfd;
 679         u32 *control_flags;
 680         struct iwl4965_cmd *out_cmd;
 681         u32 idx;
 682         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 683         dma_addr_t phys_addr;
 684         int ret;
 685         unsigned long flags;
 686
 687         /* If any of the command structures end up being larger than
 688          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 689          * we will need to increase the size of the TFD entries */
 690         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 691                !(cmd->meta.flags & CMD_SIZE_HUGE));
 692
 693         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 694                 IWL_ERROR("No space for Tx\n");
 695                 return -ENOSPC;
 696         }
 697
 698         spin_lock_irqsave(&priv->hcmd_lock, flags);
 699
 700         tfd = &txq->bd[q->write_ptr];
 701         memset(tfd, 0, sizeof(*tfd));
 702
 703         control_flags = (u32 *) tfd;
 704
 705         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 706         out_cmd = &txq->cmd[idx];
 707
 708         out_cmd->hdr.cmd = cmd->id;
 709         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 710         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 711
 712         /* At this point, the out_cmd now has all of the incoming cmd
 713          * information */
 714
 715         out_cmd->hdr.flags = 0;
 716         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 717                         INDEX_TO_SEQ(q->write_ptr));
 718         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 719                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 720
 721         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 722                         offsetof(struct iwl4965_cmd, hdr);
 723         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 724
 725         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 726                      "%d bytes at %d[%d]:%d\n",
 727                      get_cmd_string(out_cmd->hdr.cmd),
 728                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 729                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 730
 731         txq->need_update = 1;
 732
 733         /* Set up entry in queue's byte count circular buffer */
 734         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 735
 736         /* Increment and update queue's write index */
 737         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
 738         iwl4965_tx_queue_update_write_ptr(priv, txq);
 739
 740         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 741         return ret ? ret : idx;
 742 }
 743
 744 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 745 {
 746         int ret;
 747
 748         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 749
 750         /* An asynchronous command can not expect an SKB to be set. */
 751         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 752
 753         /* An asynchronous command MUST have a callback. */
 754         BUG_ON(!cmd->meta.u.callback);
 755
 756         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 757                 return -EBUSY;
 758
 759         ret = iwl4965_enqueue_hcmd(priv, cmd);
 760         if (ret < 0) {
 761                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 762                           get_cmd_string(cmd->id), ret);
 763                 return ret;
 764         }
 765         return 0;
 766 }
 767
 768 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 769 {
 770         int cmd_idx;
 771         int ret;
 772         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 773
 774         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 775
 776          /* A synchronous command can not have a callback set. */
 777         BUG_ON(cmd->meta.u.callback != NULL);
 778
 779         if (atomic_xchg(&entry, 1)) {
 780                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 781                           get_cmd_string(cmd->id));
 782                 return -EBUSY;
 783         }
 784
 785         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 786
 787         if (cmd->meta.flags & CMD_WANT_SKB)
 788                 cmd->meta.source = &cmd->meta;
 789
 790         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
 791         if (cmd_idx < 0) {
 792                 ret = cmd_idx;
 793                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
 794                           get_cmd_string(cmd->id), ret);
 795                 goto out;
 796         }
 797
 798         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 799                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 800                         HOST_COMPLETE_TIMEOUT);
 801         if (!ret) {
 802                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 803                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 804                                   get_cmd_string(cmd->id),
 805                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 806
 807                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 808                         ret = -ETIMEDOUT;
 809                         goto cancel;
 810                 }
 811         }
 812
 813         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 814                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 815                                get_cmd_string(cmd->id));
 816                 ret = -ECANCELED;
 817                 goto fail;
 818         }
 819         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 820                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 821                                get_cmd_string(cmd->id));
 822                 ret = -EIO;
 823                 goto fail;
 824         }
 825         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 826                 IWL_ERROR("Error: Response NULL in '%s'\n",
 827                           get_cmd_string(cmd->id));
 828                 ret = -EIO;
 829                 goto out;
 830         }
 831
 832         ret = 0;
 833         goto out;
 834
 835 cancel:
 836         if (cmd->meta.flags & CMD_WANT_SKB) {
 837                 struct iwl4965_cmd *qcmd;
 838
 839                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 840                  * TX cmd queue. Otherwise in case the cmd comes
 841                  * in later, it will possibly set an invalid
 842                  * address (cmd->meta.source). */
 843                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 844                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 845         }
 846 fail:
 847         if (cmd->meta.u.skb) {
 848                 dev_kfree_skb_any(cmd->meta.u.skb);
 849                 cmd->meta.u.skb = NULL;
 850         }
 851 out:
 852         atomic_set(&entry, 0);
 853         return ret;
 854 }
 855
 856 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
 857 {
 858         if (cmd->meta.flags & CMD_ASYNC)
 859                 return iwl4965_send_cmd_async(priv, cmd);
 860
 861         return iwl4965_send_cmd_sync(priv, cmd);
 862 }
 863
 864 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
 865 {
 866         struct iwl4965_host_cmd cmd = {
 867                 .id = id,
 868                 .len = len,
 869                 .data = data,
 870         };
 871
 872         return iwl4965_send_cmd_sync(priv, &cmd);
 873 }
 874
 875 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
 876 {
 877         struct iwl4965_host_cmd cmd = {
 878                 .id = id,
 879                 .len = sizeof(val),
 880                 .data = &val,
 881         };
 882
 883         return iwl4965_send_cmd_sync(priv, &cmd);
 884 }
 885
 886 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
 887 {
 888         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 889 }
 890
 891 /**
 892  * iwl4965_rxon_add_station - add station into station table.
 893  *
 894  * there is only one AP station with id= IWL_AP_ID
 895  * NOTE: mutex must be held before calling this fnction
 896  */
 897 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
 898                                 const u8 *addr, int is_ap)
 899 {
 900         u8 sta_id;
 901
 902         /* Add station to device's station table */
 903         sta_id = iwl4965_add_station_flags(priv, addr, is_ap, 0);
 904
 905         /* Set up default rate scaling table in device's station table */
 906         iwl4965_add_station(priv, addr, is_ap);
 907
 908         return sta_id;
 909 }
 910
 911 /**
 912  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
 913  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 914  * @channel: Any channel valid for the requested phymode
 915
 916  * In addition to setting the staging RXON, priv->phymode is also set.
 917  *
 918  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 919  * in the staging RXON flag structure based on the phymode
 920  */
 921 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode,
 922                                  u16 channel)
 923 {
 924         if (!iwl4965_get_channel_info(priv, phymode, channel)) {
 925                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 926                                channel, phymode);
 927                 return -EINVAL;
 928         }
 929
 930         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 931             (priv->phymode == phymode))
 932                 return 0;
 933
 934         priv->staging_rxon.channel = cpu_to_le16(channel);
 935         if (phymode == MODE_IEEE80211A)
 936                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 937         else
 938                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 939
 940         priv->phymode = phymode;
 941
 942         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
 943
 944         return 0;
 945 }
 946
 947 /**
 948  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 949  *
 950  * NOTE:  This is really only useful during development and can eventually
 951  * be #ifdef'd out once the driver is stable and folks aren't actively
 952  * making changes
 953  */
 954 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 955 {
 956         int error = 0;
 957         int counter = 1;
 958
 959         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 960                 error |= le32_to_cpu(rxon->flags &
 961                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 962                                  RXON_FLG_RADAR_DETECT_MSK));
 963                 if (error)
 964                         IWL_WARNING("check 24G fields %d | %d\n",
 965                                     counter++, error);
 966         } else {
 967                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 968                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 969                 if (error)
 970                         IWL_WARNING("check 52 fields %d | %d\n",
 971                                     counter++, error);
 972                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 973                 if (error)
 974                         IWL_WARNING("check 52 CCK %d | %d\n",
 975                                     counter++, error);
 976         }
 977         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 978         if (error)
 979                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 980
 981         /* make sure basic rates 6Mbps and 1Mbps are supported */
 982         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 983                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 984         if (error)
 985                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 986
 987         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 988         if (error)
 989                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 990
 991         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 992                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 993         if (error)
 994                 IWL_WARNING("check CCK and short slot %d | %d\n",
 995                             counter++, error);
 996
 997         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 998                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 999         if (error)
1000                 IWL_WARNING("check CCK & auto detect %d | %d\n",
1001                             counter++, error);
1002
1003         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1004                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1005         if (error)
1006                 IWL_WARNING("check TGG and auto detect %d | %d\n",
1007                             counter++, error);
1008
1009         if (error)
1010                 IWL_WARNING("Tuning to channel %d\n",
1011                             le16_to_cpu(rxon->channel));
1012
1013         if (error) {
1014                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1015                 return -1;
1016         }
1017         return 0;
1018 }
1019
1020 /**
1021  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1022  * @priv: staging_rxon is compared to active_rxon
1023  *
1024  * If the RXON structure is changing enough to require a new tune,
1025  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1026  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1027  */
1028 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1029 {
1030
1031         /* These items are only settable from the full RXON command */
1032         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1033             compare_ether_addr(priv->staging_rxon.bssid_addr,
1034                                priv->active_rxon.bssid_addr) ||
1035             compare_ether_addr(priv->staging_rxon.node_addr,
1036                                priv->active_rxon.node_addr) ||
1037             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1038                                priv->active_rxon.wlap_bssid_addr) ||
1039             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1040             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1041             (priv->staging_rxon.air_propagation !=
1042              priv->active_rxon.air_propagation) ||
1043             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1044              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1045             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1046              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1047             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1048             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1049                 return 1;
1050
1051         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1052          * be updated with the RXON_ASSOC command -- however only some
1053          * flag transitions are allowed using RXON_ASSOC */
1054
1055         /* Check if we are not switching bands */
1056         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1057             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1058                 return 1;
1059
1060         /* Check if we are switching association toggle */
1061         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1062                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1063                 return 1;
1064
1065         return 0;
1066 }
1067
1068 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1069 {
1070         int rc = 0;
1071         struct iwl4965_rx_packet *res = NULL;
1072         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1073         struct iwl4965_host_cmd cmd = {
1074                 .id = REPLY_RXON_ASSOC,
1075                 .len = sizeof(rxon_assoc),
1076                 .meta.flags = CMD_WANT_SKB,
1077                 .data = &rxon_assoc,
1078         };
1079         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1080         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1081
1082         if ((rxon1->flags == rxon2->flags) &&
1083             (rxon1->filter_flags == rxon2->filter_flags) &&
1084             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1085             (rxon1->ofdm_ht_single_stream_basic_rates ==
1086              rxon2->ofdm_ht_single_stream_basic_rates) &&
1087             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1088              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1089             (rxon1->rx_chain == rxon2->rx_chain) &&
1090             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1091                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1092                 return 0;
1093         }
1094
1095         rxon_assoc.flags = priv->staging_rxon.flags;
1096         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1097         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1098         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1099         rxon_assoc.reserved = 0;
1100         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1101             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1102         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1103             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1104         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1105
1106         rc = iwl4965_send_cmd_sync(priv, &cmd);
1107         if (rc)
1108                 return rc;
1109
1110         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1111         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1112                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1113                 rc = -EIO;
1114         }
1115
1116         priv->alloc_rxb_skb--;
1117         dev_kfree_skb_any(cmd.meta.u.skb);
1118
1119         return rc;
1120 }
1121
1122 /**
1123  * iwl4965_commit_rxon - commit staging_rxon to hardware
1124  *
1125  * The RXON command in staging_rxon is committed to the hardware and
1126  * the active_rxon structure is updated with the new data.  This
1127  * function correctly transitions out of the RXON_ASSOC_MSK state if
1128  * a HW tune is required based on the RXON structure changes.
1129  */
1130 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1131 {
1132         /* cast away the const for active_rxon in this function */
1133         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1134         DECLARE_MAC_BUF(mac);
1135         int rc = 0;
1136
1137         if (!iwl4965_is_alive(priv))
1138                 return -1;
1139
1140         /* always get timestamp with Rx frame */
1141         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1142
1143         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1144         if (rc) {
1145                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1146                 return -EINVAL;
1147         }
1148
1149         /* If we don't need to send a full RXON, we can use
1150          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1151          * and other flags for the current radio configuration. */
1152         if (!iwl4965_full_rxon_required(priv)) {
1153                 rc = iwl4965_send_rxon_assoc(priv);
1154                 if (rc) {
1155                         IWL_ERROR("Error setting RXON_ASSOC "
1156                                   "configuration (%d).\n", rc);
1157                         return rc;
1158                 }
1159
1160                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1161
1162                 return 0;
1163         }
1164
1165         /* station table will be cleared */
1166         priv->assoc_station_added = 0;
1167
1168 #ifdef CONFIG_IWL4965_SENSITIVITY
1169         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1170         if (!priv->error_recovering)
1171                 priv->start_calib = 0;
1172
1173         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1174 #endif /* CONFIG_IWL4965_SENSITIVITY */
1175
1176         /* If we are currently associated and the new config requires
1177          * an RXON_ASSOC and the new config wants the associated mask enabled,
1178          * we must clear the associated from the active configuration
1179          * before we apply the new config */
1180         if (iwl4965_is_associated(priv) &&
1181             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1182                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1183                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1184
1185                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1186                                       sizeof(struct iwl4965_rxon_cmd),
1187                                       &priv->active_rxon);
1188
1189                 /* If the mask clearing failed then we set
1190                  * active_rxon back to what it was previously */
1191                 if (rc) {
1192                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1193                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1194                                   "configuration (%d).\n", rc);
1195                         return rc;
1196                 }
1197         }
1198
1199         IWL_DEBUG_INFO("Sending RXON\n"
1200                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1201                        "* channel = %d\n"
1202                        "* bssid = %s\n",
1203                        ((priv->staging_rxon.filter_flags &
1204                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1205                        le16_to_cpu(priv->staging_rxon.channel),
1206                        print_mac(mac, priv->staging_rxon.bssid_addr));
1207
1208         /* Apply the new configuration */
1209         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1210                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1211         if (rc) {
1212                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1213                 return rc;
1214         }
1215
1216         iwl4965_clear_stations_table(priv);
1217
1218 #ifdef CONFIG_IWL4965_SENSITIVITY
1219         if (!priv->error_recovering)
1220                 priv->start_calib = 0;
1221
1222         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1223         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1224 #endif /* CONFIG_IWL4965_SENSITIVITY */
1225
1226         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1227
1228         /* If we issue a new RXON command which required a tune then we must
1229          * send a new TXPOWER command or we won't be able to Tx any frames */
1230         rc = iwl4965_hw_reg_send_txpower(priv);
1231         if (rc) {
1232                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1233                 return rc;
1234         }
1235
1236         /* Add the broadcast address so we can send broadcast frames */
1237         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1238             IWL_INVALID_STATION) {
1239                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1240                 return -EIO;
1241         }
1242
1243         /* If we have set the ASSOC_MSK and we are in BSS mode then
1244          * add the IWL_AP_ID to the station rate table */
1245         if (iwl4965_is_associated(priv) &&
1246             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1247                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1248                     == IWL_INVALID_STATION) {
1249                         IWL_ERROR("Error adding AP address for transmit.\n");
1250                         return -EIO;
1251                 }
1252                 priv->assoc_station_added = 1;
1253         }
1254
1255         return 0;
1256 }
1257
1258 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1259 {
1260         struct iwl4965_bt_cmd bt_cmd = {
1261                 .flags = 3,
1262                 .lead_time = 0xAA,
1263                 .max_kill = 1,
1264                 .kill_ack_mask = 0,
1265                 .kill_cts_mask = 0,
1266         };
1267
1268         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1269                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1270 }
1271
1272 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1273 {
1274         int rc = 0;
1275         struct iwl4965_rx_packet *res;
1276         struct iwl4965_host_cmd cmd = {
1277                 .id = REPLY_SCAN_ABORT_CMD,
1278                 .meta.flags = CMD_WANT_SKB,
1279         };
1280
1281         /* If there isn't a scan actively going on in the hardware
1282          * then we are in between scan bands and not actually
1283          * actively scanning, so don't send the abort command */
1284         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1285                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1286                 return 0;
1287         }
1288
1289         rc = iwl4965_send_cmd_sync(priv, &cmd);
1290         if (rc) {
1291                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1292                 return rc;
1293         }
1294
1295         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1296         if (res->u.status != CAN_ABORT_STATUS) {
1297                 /* The scan abort will return 1 for success or
1298                  * 2 for "failure".  A failure condition can be
1299                  * due to simply not being in an active scan which
1300                  * can occur if we send the scan abort before we
1301                  * the microcode has notified us that a scan is
1302                  * completed. */
1303                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1304                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1305                 clear_bit(STATUS_SCAN_HW, &priv->status);
1306         }
1307
1308         dev_kfree_skb_any(cmd.meta.u.skb);
1309
1310         return rc;
1311 }
1312
1313 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1314                                         struct iwl4965_cmd *cmd,
1315                                         struct sk_buff *skb)
1316 {
1317         return 1;
1318 }
1319
1320 /*
1321  * CARD_STATE_CMD
1322  *
1323  * Use: Sets the device's internal card state to enable, disable, or halt
1324  *
1325  * When in the 'enable' state the card operates as normal.
1326  * When in the 'disable' state, the card enters into a low power mode.
1327  * When in the 'halt' state, the card is shut down and must be fully
1328  * restarted to come back on.
1329  */
1330 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1331 {
1332         struct iwl4965_host_cmd cmd = {
1333                 .id = REPLY_CARD_STATE_CMD,
1334                 .len = sizeof(u32),
1335                 .data = &flags,
1336                 .meta.flags = meta_flag,
1337         };
1338
1339         if (meta_flag & CMD_ASYNC)
1340                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1341
1342         return iwl4965_send_cmd(priv, &cmd);
1343 }
1344
1345 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1346                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1347 {
1348         struct iwl4965_rx_packet *res = NULL;
1349
1350         if (!skb) {
1351                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1352                 return 1;
1353         }
1354
1355         res = (struct iwl4965_rx_packet *)skb->data;
1356         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1357                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1358                           res->hdr.flags);
1359                 return 1;
1360         }
1361
1362         switch (res->u.add_sta.status) {
1363         case ADD_STA_SUCCESS_MSK:
1364                 break;
1365         default:
1366                 break;
1367         }
1368
1369         /* We didn't cache the SKB; let the caller free it */
1370         return 1;
1371 }
1372
1373 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1374                          struct iwl4965_addsta_cmd *sta, u8 flags)
1375 {
1376         struct iwl4965_rx_packet *res = NULL;
1377         int rc = 0;
1378         struct iwl4965_host_cmd cmd = {
1379                 .id = REPLY_ADD_STA,
1380                 .len = sizeof(struct iwl4965_addsta_cmd),
1381                 .meta.flags = flags,
1382                 .data = sta,
1383         };
1384
1385         if (flags & CMD_ASYNC)
1386                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1387         else
1388                 cmd.meta.flags |= CMD_WANT_SKB;
1389
1390         rc = iwl4965_send_cmd(priv, &cmd);
1391
1392         if (rc || (flags & CMD_ASYNC))
1393                 return rc;
1394
1395         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1396         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1397                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1398                           res->hdr.flags);
1399                 rc = -EIO;
1400         }
1401
1402         if (rc == 0) {
1403                 switch (res->u.add_sta.status) {
1404                 case ADD_STA_SUCCESS_MSK:
1405                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1406                         break;
1407                 default:
1408                         rc = -EIO;
1409                         IWL_WARNING("REPLY_ADD_STA failed\n");
1410                         break;
1411                 }
1412         }
1413
1414         priv->alloc_rxb_skb--;
1415         dev_kfree_skb_any(cmd.meta.u.skb);
1416
1417         return rc;
1418 }
1419
1420 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1421                                    struct ieee80211_key_conf *keyconf,
1422                                    u8 sta_id)
1423 {
1424         unsigned long flags;
1425         __le16 key_flags = 0;
1426
1427         switch (keyconf->alg) {
1428         case ALG_CCMP:
1429                 key_flags |= STA_KEY_FLG_CCMP;
1430                 key_flags |= cpu_to_le16(
1431                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1432                 key_flags &= ~STA_KEY_FLG_INVALID;
1433                 break;
1434         case ALG_TKIP:
1435         case ALG_WEP:
1436         default:
1437                 return -EINVAL;
1438         }
1439         spin_lock_irqsave(&priv->sta_lock, flags);
1440         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1441         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1442         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1443                keyconf->keylen);
1444
1445         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1446                keyconf->keylen);
1447         priv->stations[sta_id].sta.key.key_flags = key_flags;
1448         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1449         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1450
1451         spin_unlock_irqrestore(&priv->sta_lock, flags);
1452
1453         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1454         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1455         return 0;
1456 }
1457
1458 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1459 {
1460         unsigned long flags;
1461
1462         spin_lock_irqsave(&priv->sta_lock, flags);
1463         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1464         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1465         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1466         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1467         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1468         spin_unlock_irqrestore(&priv->sta_lock, flags);
1469
1470         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1471         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1472         return 0;
1473 }
1474
1475 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1476 {
1477         struct list_head *element;
1478
1479         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1480                        priv->frames_count);
1481
1482         while (!list_empty(&priv->free_frames)) {
1483                 element = priv->free_frames.next;
1484                 list_del(element);
1485                 kfree(list_entry(element, struct iwl4965_frame, list));
1486                 priv->frames_count--;
1487         }
1488
1489         if (priv->frames_count) {
1490                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1491                             priv->frames_count);
1492                 priv->frames_count = 0;
1493         }
1494 }
1495
1496 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1497 {
1498         struct iwl4965_frame *frame;
1499         struct list_head *element;
1500         if (list_empty(&priv->free_frames)) {
1501                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1502                 if (!frame) {
1503                         IWL_ERROR("Could not allocate frame!\n");
1504                         return NULL;
1505                 }
1506
1507                 priv->frames_count++;
1508                 return frame;
1509         }
1510
1511         element = priv->free_frames.next;
1512         list_del(element);
1513         return list_entry(element, struct iwl4965_frame, list);
1514 }
1515
1516 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1517 {
1518         memset(frame, 0, sizeof(*frame));
1519         list_add(&frame->list, &priv->free_frames);
1520 }
1521
1522 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1523                                 struct ieee80211_hdr *hdr,
1524                                 const u8 *dest, int left)
1525 {
1526
1527         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1528             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1529              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1530                 return 0;
1531
1532         if (priv->ibss_beacon->len > left)
1533                 return 0;
1534
1535         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1536
1537         return priv->ibss_beacon->len;
1538 }
1539
1540 int iwl4965_rate_index_from_plcp(int plcp)
1541 {
1542         int i = 0;
1543
1544         /* 4965 HT rate format */
1545         if (plcp & RATE_MCS_HT_MSK) {
1546                 i = (plcp & 0xff);
1547
1548                 if (i >= IWL_RATE_MIMO_6M_PLCP)
1549                         i = i - IWL_RATE_MIMO_6M_PLCP;
1550
1551                 i += IWL_FIRST_OFDM_RATE;
1552                 /* skip 9M not supported in ht*/
1553                 if (i >= IWL_RATE_9M_INDEX)
1554                         i += 1;
1555                 if ((i >= IWL_FIRST_OFDM_RATE) &&
1556                     (i <= IWL_LAST_OFDM_RATE))
1557                         return i;
1558
1559         /* 4965 legacy rate format, search for match in table */
1560         } else {
1561                 for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1562                         if (iwl4965_rates[i].plcp == (plcp &0xFF))
1563                                 return i;
1564         }
1565         return -1;
1566 }
1567
1568 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1569 {
1570         u8 i;
1571
1572         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1573              i = iwl4965_rates[i].next_ieee) {
1574                 if (rate_mask & (1 << i))
1575                         return iwl4965_rates[i].plcp;
1576         }
1577
1578         return IWL_RATE_INVALID;
1579 }
1580
1581 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1582 {
1583         struct iwl4965_frame *frame;
1584         unsigned int frame_size;
1585         int rc;
1586         u8 rate;
1587
1588         frame = iwl4965_get_free_frame(priv);
1589
1590         if (!frame) {
1591                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1592                           "command.\n");
1593                 return -ENOMEM;
1594         }
1595
1596         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1597                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1598                                                 0xFF0);
1599                 if (rate == IWL_INVALID_RATE)
1600                         rate = IWL_RATE_6M_PLCP;
1601         } else {
1602                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1603                 if (rate == IWL_INVALID_RATE)
1604                         rate = IWL_RATE_1M_PLCP;
1605         }
1606
1607         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1608
1609         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1610                               &frame->u.cmd[0]);
1611
1612         iwl4965_free_frame(priv, frame);
1613
1614         return rc;
1615 }
1616
1617 /******************************************************************************
1618  *
1619  * EEPROM related functions
1620  *
1621  ******************************************************************************/
1622
1623 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1624 {
1625         memcpy(mac, priv->eeprom.mac_address, 6);
1626 }
1627
1628 /**
1629  * iwl4965_eeprom_init - read EEPROM contents
1630  *
1631  * Load the EEPROM contents from adapter into priv->eeprom
1632  *
1633  * NOTE:  This routine uses the non-debug IO access functions.
1634  */
1635 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1636 {
1637         u16 *e = (u16 *)&priv->eeprom;
1638         u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1639         u32 r;
1640         int sz = sizeof(priv->eeprom);
1641         int rc;
1642         int i;
1643         u16 addr;
1644
1645         /* The EEPROM structure has several padding buffers within it
1646          * and when adding new EEPROM maps is subject to programmer errors
1647          * which may be very difficult to identify without explicitly
1648          * checking the resulting size of the eeprom map. */
1649         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1650
1651         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1652                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1653                 return -ENOENT;
1654         }
1655
1656         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1657         rc = iwl4965_eeprom_acquire_semaphore(priv);
1658         if (rc < 0) {
1659                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1660                 return -ENOENT;
1661         }
1662
1663         /* eeprom is an array of 16bit values */
1664         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1665                 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1666                 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1667
1668                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1669                                         i += IWL_EEPROM_ACCESS_DELAY) {
1670                         r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1671                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1672                                 break;
1673                         udelay(IWL_EEPROM_ACCESS_DELAY);
1674                 }
1675
1676                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1677                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1678                         rc = -ETIMEDOUT;
1679                         goto done;
1680                 }
1681                 e[addr / 2] = le16_to_cpu(r >> 16);
1682         }
1683         rc = 0;
1684
1685 done:
1686         iwl4965_eeprom_release_semaphore(priv);
1687         return rc;
1688 }
1689
1690 /******************************************************************************
1691  *
1692  * Misc. internal state and helper functions
1693  *
1694  ******************************************************************************/
1695 #ifdef CONFIG_IWL4965_DEBUG
1696
1697 /**
1698  * iwl4965_report_frame - dump frame to syslog during debug sessions
1699  *
1700  * You may hack this function to show different aspects of received frames,
1701  * including selective frame dumps.
1702  * group100 parameter selects whether to show 1 out of 100 good frames.
1703  *
1704  * TODO:  This was originally written for 3945, need to audit for
1705  *        proper operation with 4965.
1706  */
1707 void iwl4965_report_frame(struct iwl4965_priv *priv,
1708                       struct iwl4965_rx_packet *pkt,
1709                       struct ieee80211_hdr *header, int group100)
1710 {
1711         u32 to_us;
1712         u32 print_summary = 0;
1713         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1714         u32 hundred = 0;
1715         u32 dataframe = 0;
1716         u16 fc;
1717         u16 seq_ctl;
1718         u16 channel;
1719         u16 phy_flags;
1720         int rate_sym;
1721         u16 length;
1722         u16 status;
1723         u16 bcn_tmr;
1724         u32 tsf_low;
1725         u64 tsf;
1726         u8 rssi;
1727         u8 agc;
1728         u16 sig_avg;
1729         u16 noise_diff;
1730         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1731         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1732         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1733         u8 *data = IWL_RX_DATA(pkt);
1734
1735         /* MAC header */
1736         fc = le16_to_cpu(header->frame_control);
1737         seq_ctl = le16_to_cpu(header->seq_ctrl);
1738
1739         /* metadata */
1740         channel = le16_to_cpu(rx_hdr->channel);
1741         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1742         rate_sym = rx_hdr->rate;
1743         length = le16_to_cpu(rx_hdr->len);
1744
1745         /* end-of-frame status and timestamp */
1746         status = le32_to_cpu(rx_end->status);
1747         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1748         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1749         tsf = le64_to_cpu(rx_end->timestamp);
1750
1751         /* signal statistics */
1752         rssi = rx_stats->rssi;
1753         agc = rx_stats->agc;
1754         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1755         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1756
1757         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1758
1759         /* if data frame is to us and all is good,
1760          *   (optionally) print summary for only 1 out of every 100 */
1761         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1762             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1763                 dataframe = 1;
1764                 if (!group100)
1765                         print_summary = 1;      /* print each frame */
1766                 else if (priv->framecnt_to_us < 100) {
1767                         priv->framecnt_to_us++;
1768                         print_summary = 0;
1769                 } else {
1770                         priv->framecnt_to_us = 0;
1771                         print_summary = 1;
1772                         hundred = 1;
1773                 }
1774         } else {
1775                 /* print summary for all other frames */
1776                 print_summary = 1;
1777         }
1778
1779         if (print_summary) {
1780                 char *title;
1781                 u32 rate;
1782
1783                 if (hundred)
1784                         title = "100Frames";
1785                 else if (fc & IEEE80211_FCTL_RETRY)
1786                         title = "Retry";
1787                 else if (ieee80211_is_assoc_response(fc))
1788                         title = "AscRsp";
1789                 else if (ieee80211_is_reassoc_response(fc))
1790                         title = "RasRsp";
1791                 else if (ieee80211_is_probe_response(fc)) {
1792                         title = "PrbRsp";
1793                         print_dump = 1; /* dump frame contents */
1794                 } else if (ieee80211_is_beacon(fc)) {
1795                         title = "Beacon";
1796                         print_dump = 1; /* dump frame contents */
1797                 } else if (ieee80211_is_atim(fc))
1798                         title = "ATIM";
1799                 else if (ieee80211_is_auth(fc))
1800                         title = "Auth";
1801                 else if (ieee80211_is_deauth(fc))
1802                         title = "DeAuth";
1803                 else if (ieee80211_is_disassoc(fc))
1804                         title = "DisAssoc";
1805                 else
1806                         title = "Frame";
1807
1808                 rate = iwl4965_rate_index_from_plcp(rate_sym);
1809                 if (rate == -1)
1810                         rate = 0;
1811                 else
1812                         rate = iwl4965_rates[rate].ieee / 2;
1813
1814                 /* print frame summary.
1815                  * MAC addresses show just the last byte (for brevity),
1816                  *    but you can hack it to show more, if you'd like to. */
1817                 if (dataframe)
1818                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1819                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1820                                      title, fc, header->addr1[5],
1821                                      length, rssi, channel, rate);
1822                 else {
1823                         /* src/dst addresses assume managed mode */
1824                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1825                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1826                                      "phy=0x%02x, chnl=%d\n",
1827                                      title, fc, header->addr1[5],
1828                                      header->addr3[5], rssi,
1829                                      tsf_low - priv->scan_start_tsf,
1830                                      phy_flags, channel);
1831                 }
1832         }
1833         if (print_dump)
1834                 iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1835 }
1836 #endif
1837
1838 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1839 {
1840         if (priv->hw_setting.shared_virt)
1841                 pci_free_consistent(priv->pci_dev,
1842                                     sizeof(struct iwl4965_shared),
1843                                     priv->hw_setting.shared_virt,
1844                                     priv->hw_setting.shared_phys);
1845 }
1846
1847 /**
1848  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1849  *
1850  * return : set the bit for each supported rate insert in ie
1851  */
1852 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1853                                     u16 basic_rate, int *left)
1854 {
1855         u16 ret_rates = 0, bit;
1856         int i;
1857         u8 *cnt = ie;
1858         u8 *rates = ie + 1;
1859
1860         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1861                 if (bit & supported_rate) {
1862                         ret_rates |= bit;
1863                         rates[*cnt] = iwl4965_rates[i].ieee |
1864                                 ((bit & basic_rate) ? 0x80 : 0x00);
1865                         (*cnt)++;
1866                         (*left)--;
1867                         if ((*left <= 0) ||
1868                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1869                                 break;
1870                 }
1871         }
1872
1873         return ret_rates;
1874 }
1875
1876 #ifdef CONFIG_IWL4965_HT
1877 void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1878                              struct ieee80211_ht_capability *ht_cap,
1879                              u8 use_wide_chan);
1880 #endif
1881
1882 /**
1883  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1884  */
1885 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1886                               struct ieee80211_mgmt *frame,
1887                               int left, int is_direct)
1888 {
1889         int len = 0;
1890         u8 *pos = NULL;
1891         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1892
1893         /* Make sure there is enough space for the probe request,
1894          * two mandatory IEs and the data */
1895         left -= 24;
1896         if (left < 0)
1897                 return 0;
1898         len += 24;
1899
1900         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1901         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1902         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1903         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1904         frame->seq_ctrl = 0;
1905
1906         /* fill in our indirect SSID IE */
1907         /* ...next IE... */
1908
1909         left -= 2;
1910         if (left < 0)
1911                 return 0;
1912         len += 2;
1913         pos = &(frame->u.probe_req.variable[0]);
1914         *pos++ = WLAN_EID_SSID;
1915         *pos++ = 0;
1916
1917         /* fill in our direct SSID IE... */
1918         if (is_direct) {
1919                 /* ...next IE... */
1920                 left -= 2 + priv->essid_len;
1921                 if (left < 0)
1922                         return 0;
1923                 /* ... fill it in... */
1924                 *pos++ = WLAN_EID_SSID;
1925                 *pos++ = priv->essid_len;
1926                 memcpy(pos, priv->essid, priv->essid_len);
1927                 pos += priv->essid_len;
1928                 len += 2 + priv->essid_len;
1929         }
1930
1931         /* fill in supported rate */
1932         /* ...next IE... */
1933         left -= 2;
1934         if (left < 0)
1935                 return 0;
1936
1937         /* ... fill it in... */
1938         *pos++ = WLAN_EID_SUPP_RATES;
1939         *pos = 0;
1940
1941         /* exclude 60M rate */
1942         active_rates = priv->rates_mask;
1943         active_rates &= ~IWL_RATE_60M_MASK;
1944
1945         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1946
1947         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1948         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1949                         active_rate_basic, &left);
1950         active_rates &= ~ret_rates;
1951
1952         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1953                                  active_rate_basic, &left);
1954         active_rates &= ~ret_rates;
1955
1956         len += 2 + *pos;
1957         pos += (*pos) + 1;
1958         if (active_rates == 0)
1959                 goto fill_end;
1960
1961         /* fill in supported extended rate */
1962         /* ...next IE... */
1963         left -= 2;
1964         if (left < 0)
1965                 return 0;
1966         /* ... fill it in... */
1967         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1968         *pos = 0;
1969         iwl4965_supported_rate_to_ie(pos, active_rates,
1970                                  active_rate_basic, &left);
1971         if (*pos > 0)
1972                 len += 2 + *pos;
1973
1974 #ifdef CONFIG_IWL4965_HT
1975         if (is_direct && priv->is_ht_enabled) {
1976                 u8 use_wide_chan = 1;
1977
1978                 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1979                         use_wide_chan = 0;
1980                 pos += (*pos) + 1;
1981                 *pos++ = WLAN_EID_HT_CAPABILITY;
1982                 *pos++ = sizeof(struct ieee80211_ht_capability);
1983                 iwl4965_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1984                                  use_wide_chan);
1985                 len += 2 + sizeof(struct ieee80211_ht_capability);
1986         }
1987 #endif  /*CONFIG_IWL4965_HT */
1988
1989  fill_end:
1990         return (u16)len;
1991 }
1992
1993 /*
1994  * QoS  support
1995 */
1996 #ifdef CONFIG_IWL4965_QOS
1997 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1998                                        struct iwl4965_qosparam_cmd *qos)
1999 {
2000
2001         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
2002                                 sizeof(struct iwl4965_qosparam_cmd), qos);
2003 }
2004
2005 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
2006 {
2007         u16 cw_min = 15;
2008         u16 cw_max = 1023;
2009         u8 aifs = 2;
2010         u8 is_legacy = 0;
2011         unsigned long flags;
2012         int i;
2013
2014         spin_lock_irqsave(&priv->lock, flags);
2015         priv->qos_data.qos_active = 0;
2016
2017         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
2018                 if (priv->qos_data.qos_enable)
2019                         priv->qos_data.qos_active = 1;
2020                 if (!(priv->active_rate & 0xfff0)) {
2021                         cw_min = 31;
2022                         is_legacy = 1;
2023                 }
2024         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2025                 if (priv->qos_data.qos_enable)
2026                         priv->qos_data.qos_active = 1;
2027         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
2028                 cw_min = 31;
2029                 is_legacy = 1;
2030         }
2031
2032         if (priv->qos_data.qos_active)
2033                 aifs = 3;
2034
2035         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
2036         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
2037         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
2038         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
2039         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
2040
2041         if (priv->qos_data.qos_active) {
2042                 i = 1;
2043                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
2044                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
2045                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
2046                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2047                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2048
2049                 i = 2;
2050                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2051                         cpu_to_le16((cw_min + 1) / 2 - 1);
2052                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2053                         cpu_to_le16(cw_max);
2054                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2055                 if (is_legacy)
2056                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2057                                 cpu_to_le16(6016);
2058                 else
2059                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2060                                 cpu_to_le16(3008);
2061                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2062
2063                 i = 3;
2064                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2065                         cpu_to_le16((cw_min + 1) / 4 - 1);
2066                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2067                         cpu_to_le16((cw_max + 1) / 2 - 1);
2068                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2069                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2070                 if (is_legacy)
2071                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2072                                 cpu_to_le16(3264);
2073                 else
2074                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2075                                 cpu_to_le16(1504);
2076         } else {
2077                 for (i = 1; i < 4; i++) {
2078                         priv->qos_data.def_qos_parm.ac[i].cw_min =
2079                                 cpu_to_le16(cw_min);
2080                         priv->qos_data.def_qos_parm.ac[i].cw_max =
2081                                 cpu_to_le16(cw_max);
2082                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2083                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2084                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2085                 }
2086         }
2087         IWL_DEBUG_QOS("set QoS to default \n");
2088
2089         spin_unlock_irqrestore(&priv->lock, flags);
2090 }
2091
2092 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2093 {
2094         unsigned long flags;
2095
2096         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2097                 return;
2098
2099         if (!priv->qos_data.qos_enable)
2100                 return;
2101
2102         spin_lock_irqsave(&priv->lock, flags);
2103         priv->qos_data.def_qos_parm.qos_flags = 0;
2104
2105         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2106             !priv->qos_data.qos_cap.q_AP.txop_request)
2107                 priv->qos_data.def_qos_parm.qos_flags |=
2108                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2109         if (priv->qos_data.qos_active)
2110                 priv->qos_data.def_qos_parm.qos_flags |=
2111                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2112
2113 #ifdef CONFIG_IWL4965_HT
2114         if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
2115                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2116 #endif /* CONFIG_IWL4965_HT */
2117
2118         spin_unlock_irqrestore(&priv->lock, flags);
2119
2120         if (force || iwl4965_is_associated(priv)) {
2121                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2122                                 priv->qos_data.qos_active,
2123                                 priv->qos_data.def_qos_parm.qos_flags);
2124
2125                 iwl4965_send_qos_params_command(priv,
2126                                 &(priv->qos_data.def_qos_parm));
2127         }
2128 }
2129
2130 #endif /* CONFIG_IWL4965_QOS */
2131 /*
2132  * Power management (not Tx power!) functions
2133  */
2134 #define MSEC_TO_USEC 1024
2135
2136 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2137 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2138 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2139 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2140                                      __constant_cpu_to_le32(X1), \
2141                                      __constant_cpu_to_le32(X2), \
2142                                      __constant_cpu_to_le32(X3), \
2143                                      __constant_cpu_to_le32(X4)}
2144
2145
2146 /* default power management (not Tx power) table values */
2147 /* for tim  0-10 */
2148 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2149         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2150         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2151         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2152         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2153         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2154         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2155 };
2156
2157 /* for tim > 10 */
2158 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2159         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2160         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2161                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2162         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2163                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2164         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2165                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2166         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2167         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2168                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2169 };
2170
2171 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2172 {
2173         int rc = 0, i;
2174         struct iwl4965_power_mgr *pow_data;
2175         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2176         u16 pci_pm;
2177
2178         IWL_DEBUG_POWER("Initialize power \n");
2179
2180         pow_data = &(priv->power_data);
2181
2182         memset(pow_data, 0, sizeof(*pow_data));
2183
2184         pow_data->active_index = IWL_POWER_RANGE_0;
2185         pow_data->dtim_val = 0xffff;
2186
2187         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2188         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2189
2190         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2191         if (rc != 0)
2192                 return 0;
2193         else {
2194                 struct iwl4965_powertable_cmd *cmd;
2195
2196                 IWL_DEBUG_POWER("adjust power command flags\n");
2197
2198                 for (i = 0; i < IWL_POWER_AC; i++) {
2199                         cmd = &pow_data->pwr_range_0[i].cmd;
2200
2201                         if (pci_pm & 0x1)
2202                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2203                         else
2204                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2205                 }
2206         }
2207         return rc;
2208 }
2209
2210 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2211                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
2212 {
2213         int rc = 0, i;
2214         u8 skip;
2215         u32 max_sleep = 0;
2216         struct iwl4965_power_vec_entry *range;
2217         u8 period = 0;
2218         struct iwl4965_power_mgr *pow_data;
2219
2220         if (mode > IWL_POWER_INDEX_5) {
2221                 IWL_DEBUG_POWER("Error invalid power mode \n");
2222                 return -1;
2223         }
2224         pow_data = &(priv->power_data);
2225
2226         if (pow_data->active_index == IWL_POWER_RANGE_0)
2227                 range = &pow_data->pwr_range_0[0];
2228         else
2229                 range = &pow_data->pwr_range_1[1];
2230
2231         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2232
2233 #ifdef IWL_MAC80211_DISABLE
2234         if (priv->assoc_network != NULL) {
2235                 unsigned long flags;
2236
2237                 period = priv->assoc_network->tim.tim_period;
2238         }
2239 #endif  /*IWL_MAC80211_DISABLE */
2240         skip = range[mode].no_dtim;
2241
2242         if (period == 0) {
2243                 period = 1;
2244                 skip = 0;
2245         }
2246
2247         if (skip == 0) {
2248                 max_sleep = period;
2249                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2250         } else {
2251                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2252                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2253                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2254         }
2255
2256         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2257                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2258                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2259         }
2260
2261         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2262         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2263         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2264         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2265                         le32_to_cpu(cmd->sleep_interval[0]),
2266                         le32_to_cpu(cmd->sleep_interval[1]),
2267                         le32_to_cpu(cmd->sleep_interval[2]),
2268                         le32_to_cpu(cmd->sleep_interval[3]),
2269                         le32_to_cpu(cmd->sleep_interval[4]));
2270
2271         return rc;
2272 }
2273
2274 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2275 {
2276         u32 uninitialized_var(final_mode);
2277         int rc;
2278         struct iwl4965_powertable_cmd cmd;
2279
2280         /* If on battery, set to 3,
2281          * if plugged into AC power, set to CAM ("continuously aware mode"),
2282          * else user level */
2283         switch (mode) {
2284         case IWL_POWER_BATTERY:
2285                 final_mode = IWL_POWER_INDEX_3;
2286                 break;
2287         case IWL_POWER_AC:
2288                 final_mode = IWL_POWER_MODE_CAM;
2289                 break;
2290         default:
2291                 final_mode = mode;
2292                 break;
2293         }
2294
2295         cmd.keep_alive_beacons = 0;
2296
2297         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2298
2299         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2300
2301         if (final_mode == IWL_POWER_MODE_CAM)
2302                 clear_bit(STATUS_POWER_PMI, &priv->status);
2303         else
2304                 set_bit(STATUS_POWER_PMI, &priv->status);
2305
2306         return rc;
2307 }
2308
2309 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2310 {
2311         /* Filter incoming packets to determine if they are targeted toward
2312          * this network, discarding packets coming from ourselves */
2313         switch (priv->iw_mode) {
2314         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2315                 /* packets from our adapter are dropped (echo) */
2316                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2317                         return 0;
2318                 /* {broad,multi}cast packets to our IBSS go through */
2319                 if (is_multicast_ether_addr(header->addr1))
2320                         return !compare_ether_addr(header->addr3, priv->bssid);
2321                 /* packets to our adapter go through */
2322                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2323         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2324                 /* packets from our adapter are dropped (echo) */
2325                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2326                         return 0;
2327                 /* {broad,multi}cast packets to our BSS go through */
2328                 if (is_multicast_ether_addr(header->addr1))
2329                         return !compare_ether_addr(header->addr2, priv->bssid);
2330                 /* packets to our adapter go through */
2331                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2332         }
2333
2334         return 1;
2335 }
2336
2337 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2338
2339 static const char *iwl4965_get_tx_fail_reason(u32 status)
2340 {
2341         switch (status & TX_STATUS_MSK) {
2342         case TX_STATUS_SUCCESS:
2343                 return "SUCCESS";
2344                 TX_STATUS_ENTRY(SHORT_LIMIT);
2345                 TX_STATUS_ENTRY(LONG_LIMIT);
2346                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2347                 TX_STATUS_ENTRY(MGMNT_ABORT);
2348                 TX_STATUS_ENTRY(NEXT_FRAG);
2349                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2350                 TX_STATUS_ENTRY(DEST_PS);
2351                 TX_STATUS_ENTRY(ABORTED);
2352                 TX_STATUS_ENTRY(BT_RETRY);
2353                 TX_STATUS_ENTRY(STA_INVALID);
2354                 TX_STATUS_ENTRY(FRAG_DROPPED);
2355                 TX_STATUS_ENTRY(TID_DISABLE);
2356                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2357                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2358                 TX_STATUS_ENTRY(TX_LOCKED);
2359                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2360         }
2361
2362         return "UNKNOWN";
2363 }
2364
2365 /**
2366  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2367  *
2368  * NOTE: priv->mutex is not required before calling this function
2369  */
2370 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2371 {
2372         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2373                 clear_bit(STATUS_SCANNING, &priv->status);
2374                 return 0;
2375         }
2376
2377         if (test_bit(STATUS_SCANNING, &priv->status)) {
2378                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2379                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2380                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2381                         queue_work(priv->workqueue, &priv->abort_scan);
2382
2383                 } else
2384                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2385
2386                 return test_bit(STATUS_SCANNING, &priv->status);
2387         }
2388
2389         return 0;
2390 }
2391
2392 /**
2393  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2394  * @ms: amount of time to wait (in milliseconds) for scan to abort
2395  *
2396  * NOTE: priv->mutex must be held before calling this function
2397  */
2398 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2399 {
2400         unsigned long now = jiffies;
2401         int ret;
2402
2403         ret = iwl4965_scan_cancel(priv);
2404         if (ret && ms) {
2405                 mutex_unlock(&priv->mutex);
2406                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2407                                 test_bit(STATUS_SCANNING, &priv->status))
2408                         msleep(1);
2409                 mutex_lock(&priv->mutex);
2410
2411                 return test_bit(STATUS_SCANNING, &priv->status);
2412         }
2413
2414         return ret;
2415 }
2416
2417 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2418 {
2419         /* Reset ieee stats */
2420
2421         /* We don't reset the net_device_stats (ieee->stats) on
2422          * re-association */
2423
2424         priv->last_seq_num = -1;
2425         priv->last_frag_num = -1;
2426         priv->last_packet_time = 0;
2427
2428         iwl4965_scan_cancel(priv);
2429 }
2430
2431 #define MAX_UCODE_BEACON_INTERVAL       4096
2432 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2433
2434 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2435 {
2436         u16 new_val = 0;
2437         u16 beacon_factor = 0;
2438
2439         beacon_factor =
2440             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2441                 / MAX_UCODE_BEACON_INTERVAL;
2442         new_val = beacon_val / beacon_factor;
2443
2444         return cpu_to_le16(new_val);
2445 }
2446
2447 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2448 {
2449         u64 interval_tm_unit;
2450         u64 tsf, result;
2451         unsigned long flags;
2452         struct ieee80211_conf *conf = NULL;
2453         u16 beacon_int = 0;
2454
2455         conf = ieee80211_get_hw_conf(priv->hw);
2456
2457         spin_lock_irqsave(&priv->lock, flags);
2458         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2459         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2460
2461         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2462
2463         tsf = priv->timestamp1;
2464         tsf = ((tsf << 32) | priv->timestamp0);
2465
2466         beacon_int = priv->beacon_int;
2467         spin_unlock_irqrestore(&priv->lock, flags);
2468
2469         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2470                 if (beacon_int == 0) {
2471                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2472                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2473                 } else {
2474                         priv->rxon_timing.beacon_interval =
2475                                 cpu_to_le16(beacon_int);
2476                         priv->rxon_timing.beacon_interval =
2477                             iwl4965_adjust_beacon_interval(
2478                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2479                 }
2480
2481                 priv->rxon_timing.atim_window = 0;
2482         } else {
2483                 priv->rxon_timing.beacon_interval =
2484                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2485                 /* TODO: we need to get atim_window from upper stack
2486                  * for now we set to 0 */
2487                 priv->rxon_timing.atim_window = 0;
2488         }
2489
2490         interval_tm_unit =
2491                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2492         result = do_div(tsf, interval_tm_unit);
2493         priv->rxon_timing.beacon_init_val =
2494             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2495
2496         IWL_DEBUG_ASSOC
2497             ("beacon interval %d beacon timer %d beacon tim %d\n",
2498                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2499                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2500                 le16_to_cpu(priv->rxon_timing.atim_window));
2501 }
2502
2503 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2504 {
2505         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2506                 IWL_ERROR("APs don't scan.\n");
2507                 return 0;
2508         }
2509
2510         if (!iwl4965_is_ready_rf(priv)) {
2511                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2512                 return -EIO;
2513         }
2514
2515         if (test_bit(STATUS_SCANNING, &priv->status)) {
2516                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2517                 return -EAGAIN;
2518         }
2519
2520         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2521                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2522                                "Queuing.\n");
2523                 return -EAGAIN;
2524         }
2525
2526         IWL_DEBUG_INFO("Starting scan...\n");
2527         priv->scan_bands = 2;
2528         set_bit(STATUS_SCANNING, &priv->status);
2529         priv->scan_start = jiffies;
2530         priv->scan_pass_start = priv->scan_start;
2531
2532         queue_work(priv->workqueue, &priv->request_scan);
2533
2534         return 0;
2535 }
2536
2537 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2538 {
2539         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2540
2541         if (hw_decrypt)
2542                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2543         else
2544                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2545
2546         return 0;
2547 }
2548
2549 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2550 {
2551         if (phymode == MODE_IEEE80211A) {
2552                 priv->staging_rxon.flags &=
2553                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2554                       | RXON_FLG_CCK_MSK);
2555                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2556         } else {
2557                 /* Copied from iwl4965_bg_post_associate() */
2558                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2559                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2560                 else
2561                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2562
2563                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2564                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2565
2566                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2567                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2568                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2569         }
2570 }
2571
2572 /*
2573  * initialize rxon structure with default values from eeprom
2574  */
2575 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2576 {
2577         const struct iwl4965_channel_info *ch_info;
2578
2579         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2580
2581         switch (priv->iw_mode) {
2582         case IEEE80211_IF_TYPE_AP:
2583                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2584                 break;
2585
2586         case IEEE80211_IF_TYPE_STA:
2587                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2588                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2589                 break;
2590
2591         case IEEE80211_IF_TYPE_IBSS:
2592                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2593                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2594                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2595                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2596                 break;
2597
2598         case IEEE80211_IF_TYPE_MNTR:
2599                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2600                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2601                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2602                 break;
2603         }
2604
2605 #if 0
2606         /* TODO:  Figure out when short_preamble would be set and cache from
2607          * that */
2608         if (!hw_to_local(priv->hw)->short_preamble)
2609                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2610         else
2611                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2612 #endif
2613
2614         ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2615                                        le16_to_cpu(priv->staging_rxon.channel));
2616
2617         if (!ch_info)
2618                 ch_info = &priv->channel_info[0];
2619
2620         /*
2621          * in some case A channels are all non IBSS
2622          * in this case force B/G channel
2623          */
2624         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2625             !(is_channel_ibss(ch_info)))
2626                 ch_info = &priv->channel_info[0];
2627
2628         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2629         if (is_channel_a_band(ch_info))
2630                 priv->phymode = MODE_IEEE80211A;
2631         else
2632                 priv->phymode = MODE_IEEE80211G;
2633
2634         iwl4965_set_flags_for_phymode(priv, priv->phymode);
2635
2636         priv->staging_rxon.ofdm_basic_rates =
2637             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2638         priv->staging_rxon.cck_basic_rates =
2639             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2640
2641         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2642                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2643         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2644         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2645         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2646         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2647         iwl4965_set_rxon_chain(priv);
2648 }
2649
2650 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2651 {
2652         if (mode == IEEE80211_IF_TYPE_IBSS) {
2653                 const struct iwl4965_channel_info *ch_info;
2654
2655                 ch_info = iwl4965_get_channel_info(priv,
2656                         priv->phymode,
2657                         le16_to_cpu(priv->staging_rxon.channel));
2658
2659                 if (!ch_info || !is_channel_ibss(ch_info)) {
2660                         IWL_ERROR("channel %d not IBSS channel\n",
2661                                   le16_to_cpu(priv->staging_rxon.channel));
2662                         return -EINVAL;
2663                 }
2664         }
2665
2666         priv->iw_mode = mode;
2667
2668         iwl4965_connection_init_rx_config(priv);
2669         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2670
2671         iwl4965_clear_stations_table(priv);
2672
2673         /* dont commit rxon if rf-kill is on*/
2674         if (!iwl4965_is_ready_rf(priv))
2675                 return -EAGAIN;
2676
2677         cancel_delayed_work(&priv->scan_check);
2678         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2679                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2680                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2681                 return -EAGAIN;
2682         }
2683
2684         iwl4965_commit_rxon(priv);
2685
2686         return 0;
2687 }
2688
2689 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2690                                       struct ieee80211_tx_control *ctl,
2691                                       struct iwl4965_cmd *cmd,
2692                                       struct sk_buff *skb_frag,
2693                                       int last_frag)
2694 {
2695         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2696
2697         switch (keyinfo->alg) {
2698         case ALG_CCMP:
2699                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2700                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2701                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2702                 break;
2703
2704         case ALG_TKIP:
2705 #if 0
2706                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2707
2708                 if (last_frag)
2709                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2710                                8);
2711                 else
2712                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2713 #endif
2714                 break;
2715
2716         case ALG_WEP:
2717                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2718                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2719
2720                 if (keyinfo->keylen == 13)
2721                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2722
2723                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2724
2725                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2726                              "with key %d\n", ctl->key_idx);
2727                 break;
2728
2729         default:
2730                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2731                 break;
2732         }
2733 }
2734
2735 /*
2736  * handle build REPLY_TX command notification.
2737  */
2738 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2739                                   struct iwl4965_cmd *cmd,
2740                                   struct ieee80211_tx_control *ctrl,
2741                                   struct ieee80211_hdr *hdr,
2742                                   int is_unicast, u8 std_id)
2743 {
2744         __le16 *qc;
2745         u16 fc = le16_to_cpu(hdr->frame_control);
2746         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2747
2748         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2749         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2750                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2751                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2752                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2753                 if (ieee80211_is_probe_response(fc) &&
2754                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2755                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2756         } else {
2757                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2758                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2759         }
2760
2761         cmd->cmd.tx.sta_id = std_id;
2762         if (ieee80211_get_morefrag(hdr))
2763                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2764
2765         qc = ieee80211_get_qos_ctrl(hdr);
2766         if (qc) {
2767                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2768                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2769         } else
2770                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2771
2772         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2773                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2774                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2775         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2776                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2777                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2778         }
2779
2780         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2781                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2782
2783         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2784         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2785                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2786                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2787                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2788                 else
2789                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2790         } else
2791                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2792
2793         cmd->cmd.tx.driver_txop = 0;
2794         cmd->cmd.tx.tx_flags = tx_flags;
2795         cmd->cmd.tx.next_frame_len = 0;
2796 }
2797
2798 /**
2799  * iwl4965_get_sta_id - Find station's index within station table
2800  *
2801  * If new IBSS station, create new entry in station table
2802  */
2803 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2804                                 struct ieee80211_hdr *hdr)
2805 {
2806         int sta_id;
2807         u16 fc = le16_to_cpu(hdr->frame_control);
2808         DECLARE_MAC_BUF(mac);
2809
2810         /* If this frame is broadcast or management, use broadcast station id */
2811         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2812             is_multicast_ether_addr(hdr->addr1))
2813                 return priv->hw_setting.bcast_sta_id;
2814
2815         switch (priv->iw_mode) {
2816
2817         /* If we are a client station in a BSS network, use the special
2818          * AP station entry (that's the only station we communicate with) */
2819         case IEEE80211_IF_TYPE_STA:
2820                 return IWL_AP_ID;
2821
2822         /* If we are an AP, then find the station, or use BCAST */
2823         case IEEE80211_IF_TYPE_AP:
2824                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2825                 if (sta_id != IWL_INVALID_STATION)
2826                         return sta_id;
2827                 return priv->hw_setting.bcast_sta_id;
2828
2829         /* If this frame is going out to an IBSS network, find the station,
2830          * or create a new station table entry */
2831         case IEEE80211_IF_TYPE_IBSS:
2832                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2833                 if (sta_id != IWL_INVALID_STATION)
2834                         return sta_id;
2835
2836                 /* Create new station table entry */
2837                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1, 0, CMD_ASYNC);
2838
2839                 if (sta_id != IWL_INVALID_STATION)
2840                         return sta_id;
2841
2842                 IWL_DEBUG_DROP("Station %s not in station map. "
2843                                "Defaulting to broadcast...\n",
2844                                print_mac(mac, hdr->addr1));
2845                 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2846                 return priv->hw_setting.bcast_sta_id;
2847
2848         default:
2849                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2850                 return priv->hw_setting.bcast_sta_id;
2851         }
2852 }
2853
2854 /*
2855  * start REPLY_TX command process
2856  */
2857 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2858                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2859 {
2860         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2861         struct iwl4965_tfd_frame *tfd;
2862         u32 *control_flags;
2863         int txq_id = ctl->queue;
2864         struct iwl4965_tx_queue *txq = NULL;
2865         struct iwl4965_queue *q = NULL;
2866         dma_addr_t phys_addr;
2867         dma_addr_t txcmd_phys;
2868         struct iwl4965_cmd *out_cmd = NULL;
2869         u16 len, idx, len_org;
2870         u8 id, hdr_len, unicast;
2871         u8 sta_id;
2872         u16 seq_number = 0;
2873         u16 fc;
2874         __le16 *qc;
2875         u8 wait_write_ptr = 0;
2876         unsigned long flags;
2877         int rc;
2878
2879         spin_lock_irqsave(&priv->lock, flags);
2880         if (iwl4965_is_rfkill(priv)) {
2881                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2882                 goto drop_unlock;
2883         }
2884
2885         if (!priv->interface_id) {
2886                 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2887                 goto drop_unlock;
2888         }
2889
2890         if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2891                 IWL_ERROR("ERROR: No TX rate available.\n");
2892                 goto drop_unlock;
2893         }
2894
2895         unicast = !is_multicast_ether_addr(hdr->addr1);
2896         id = 0;
2897
2898         fc = le16_to_cpu(hdr->frame_control);
2899
2900 #ifdef CONFIG_IWL4965_DEBUG
2901         if (ieee80211_is_auth(fc))
2902                 IWL_DEBUG_TX("Sending AUTH frame\n");
2903         else if (ieee80211_is_assoc_request(fc))
2904                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2905         else if (ieee80211_is_reassoc_request(fc))
2906                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2907 #endif
2908
2909         /* drop all data frame if we are not associated */
2910         if (!iwl4965_is_associated(priv) && !priv->assoc_id &&
2911             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2912                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2913                 goto drop_unlock;
2914         }
2915
2916         spin_unlock_irqrestore(&priv->lock, flags);
2917
2918         hdr_len = ieee80211_get_hdrlen(fc);
2919
2920         /* Find (or create) index into station table for destination station */
2921         sta_id = iwl4965_get_sta_id(priv, hdr);
2922         if (sta_id == IWL_INVALID_STATION) {
2923                 DECLARE_MAC_BUF(mac);
2924
2925                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2926                                print_mac(mac, hdr->addr1));
2927                 goto drop;
2928         }
2929
2930         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2931
2932         qc = ieee80211_get_qos_ctrl(hdr);
2933         if (qc) {
2934                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2935                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2936                                 IEEE80211_SCTL_SEQ;
2937                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2938                         (hdr->seq_ctrl &
2939                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2940                 seq_number += 0x10;
2941 #ifdef CONFIG_IWL4965_HT
2942 #ifdef CONFIG_IWL4965_HT_AGG
2943                 /* aggregation is on for this <sta,tid> */
2944                 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2945                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2946 #endif /* CONFIG_IWL4965_HT_AGG */
2947 #endif /* CONFIG_IWL4965_HT */
2948         }
2949
2950         /* Descriptor for chosen Tx queue */
2951         txq = &priv->txq[txq_id];
2952         q = &txq->q;
2953
2954         spin_lock_irqsave(&priv->lock, flags);
2955
2956         /* Set up first empty TFD within this queue's circular TFD buffer */
2957         tfd = &txq->bd[q->write_ptr];
2958         memset(tfd, 0, sizeof(*tfd));
2959         control_flags = (u32 *) tfd;
2960         idx = get_cmd_index(q, q->write_ptr, 0);
2961
2962         /* Set up driver data for this TFD */
2963         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2964         txq->txb[q->write_ptr].skb[0] = skb;
2965         memcpy(&(txq->txb[q->write_ptr].status.control),
2966                ctl, sizeof(struct ieee80211_tx_control));
2967
2968         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2969         out_cmd = &txq->cmd[idx];
2970         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2971         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2972
2973         /*
2974          * Set up the Tx-command (not MAC!) header.
2975          * Store the chosen Tx queue and TFD index within the sequence field;
2976          * after Tx, uCode's Tx response will return this value so driver can
2977          * locate the frame within the tx queue and do post-tx processing.
2978          */
2979         out_cmd->hdr.cmd = REPLY_TX;
2980         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2981                                 INDEX_TO_SEQ(q->write_ptr)));
2982
2983         /* Copy MAC header from skb into command buffer */
2984         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2985
2986         /*
2987          * Use the first empty entry in this queue's command buffer array
2988          * to contain the Tx command and MAC header concatenated together
2989          * (payload data will be in another buffer).
2990          * Size of this varies, due to varying MAC header length.
2991          * If end is not dword aligned, we'll have 2 extra bytes at the end
2992          * of the MAC header (device reads on dword boundaries).
2993          * We'll tell device about this padding later.
2994          */
2995         len = priv->hw_setting.tx_cmd_len +
2996                 sizeof(struct iwl4965_cmd_header) + hdr_len;
2997
2998         len_org = len;
2999         len = (len + 3) & ~3;
3000
3001         if (len_org != len)
3002                 len_org = 1;
3003         else
3004                 len_org = 0;
3005
3006         /* Physical address of this Tx command's header (not MAC header!),
3007          * within command buffer array. */
3008         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3009                      offsetof(struct iwl4965_cmd, hdr);
3010
3011         /* Add buffer containing Tx command and MAC(!) header to TFD's
3012          * first entry */
3013         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3014
3015         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
3016                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3017
3018         /* Set up TFD's 2nd entry to point directly to remainder of skb,
3019          * if any (802.11 null frames have no payload). */
3020         len = skb->len - hdr_len;
3021         if (len) {
3022                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3023                                            len, PCI_DMA_TODEVICE);
3024                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3025         }
3026
3027         /* Tell 4965 about any 2-byte padding after MAC header */
3028         if (len_org)
3029                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3030
3031         /* Total # bytes to be transmitted */
3032         len = (u16)skb->len;
3033         out_cmd->cmd.tx.len = cpu_to_le16(len);
3034
3035         /* TODO need this for burst mode later on */
3036         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3037
3038         /* set is_hcca to 0; it probably will never be implemented */
3039         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3040
3041         iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
3042                        hdr, hdr_len, ctl, NULL);
3043
3044         if (!ieee80211_get_morefrag(hdr)) {
3045                 txq->need_update = 1;
3046                 if (qc) {
3047                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3048                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
3049                 }
3050         } else {
3051                 wait_write_ptr = 1;
3052                 txq->need_update = 0;
3053         }
3054
3055         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3056                            sizeof(out_cmd->cmd.tx));
3057
3058         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3059                            ieee80211_get_hdrlen(fc));
3060
3061         /* Set up entry for this TFD in Tx byte-count array */
3062         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3063
3064         /* Tell device the write index *just past* this latest filled TFD */
3065         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3066         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3067         spin_unlock_irqrestore(&priv->lock, flags);
3068
3069         if (rc)
3070                 return rc;
3071
3072         if ((iwl4965_queue_space(q) < q->high_mark)
3073             && priv->mac80211_registered) {
3074                 if (wait_write_ptr) {
3075                         spin_lock_irqsave(&priv->lock, flags);
3076                         txq->need_update = 1;
3077                         iwl4965_tx_queue_update_write_ptr(priv, txq);
3078                         spin_unlock_irqrestore(&priv->lock, flags);
3079                 }
3080
3081                 ieee80211_stop_queue(priv->hw, ctl->queue);
3082         }
3083
3084         return 0;
3085
3086 drop_unlock:
3087         spin_unlock_irqrestore(&priv->lock, flags);
3088 drop:
3089         return -1;
3090 }
3091
3092 static void iwl4965_set_rate(struct iwl4965_priv *priv)
3093 {
3094         const struct ieee80211_hw_mode *hw = NULL;
3095         struct ieee80211_rate *rate;
3096         int i;
3097
3098         hw = iwl4965_get_hw_mode(priv, priv->phymode);
3099         if (!hw) {
3100                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3101                 return;
3102         }
3103
3104         priv->active_rate = 0;
3105         priv->active_rate_basic = 0;
3106
3107         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3108                        hw->mode == MODE_IEEE80211A ?
3109                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3110
3111         for (i = 0; i < hw->num_rates; i++) {
3112                 rate = &(hw->rates[i]);
3113                 if ((rate->val < IWL_RATE_COUNT) &&
3114                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3115                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3116                                        rate->val, iwl4965_rates[rate->val].plcp,
3117                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3118                                        "*" : "");
3119                         priv->active_rate |= (1 << rate->val);
3120                         if (rate->flags & IEEE80211_RATE_BASIC)
3121                                 priv->active_rate_basic |= (1 << rate->val);
3122                 } else
3123                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3124                                        rate->val, iwl4965_rates[rate->val].plcp);
3125         }
3126
3127         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3128                        priv->active_rate, priv->active_rate_basic);
3129
3130         /*
3131          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3132          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3133          * OFDM
3134          */
3135         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3136                 priv->staging_rxon.cck_basic_rates =
3137                     ((priv->active_rate_basic &
3138                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3139         else
3140                 priv->staging_rxon.cck_basic_rates =
3141                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3142
3143         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3144                 priv->staging_rxon.ofdm_basic_rates =
3145                     ((priv->active_rate_basic &
3146                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3147                       IWL_FIRST_OFDM_RATE) & 0xFF;
3148         else
3149                 priv->staging_rxon.ofdm_basic_rates =
3150                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3151 }
3152
3153 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3154 {
3155         unsigned long flags;
3156
3157         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3158                 return;
3159
3160         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3161                           disable_radio ? "OFF" : "ON");
3162
3163         if (disable_radio) {
3164                 iwl4965_scan_cancel(priv);
3165                 /* FIXME: This is a workaround for AP */
3166                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3167                         spin_lock_irqsave(&priv->lock, flags);
3168                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3169                                     CSR_UCODE_SW_BIT_RFKILL);
3170                         spin_unlock_irqrestore(&priv->lock, flags);
3171                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3172                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3173                 }
3174                 return;
3175         }
3176
3177         spin_lock_irqsave(&priv->lock, flags);
3178         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3179
3180         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3181         spin_unlock_irqrestore(&priv->lock, flags);
3182
3183         /* wake up ucode */
3184         msleep(10);
3185
3186         spin_lock_irqsave(&priv->lock, flags);
3187         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3188         if (!iwl4965_grab_nic_access(priv))
3189                 iwl4965_release_nic_access(priv);
3190         spin_unlock_irqrestore(&priv->lock, flags);
3191
3192         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3193                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3194                                   "disabled by HW switch\n");
3195                 return;
3196         }
3197
3198         queue_work(priv->workqueue, &priv->restart);
3199         return;
3200 }
3201
3202 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3203                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3204 {
3205         u16 fc =
3206             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3207
3208         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3209                 return;
3210
3211         if (!(fc & IEEE80211_FCTL_PROTECTED))
3212                 return;
3213
3214         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3215         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3216         case RX_RES_STATUS_SEC_TYPE_TKIP:
3217                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3218                     RX_RES_STATUS_BAD_ICV_MIC)
3219                         stats->flag |= RX_FLAG_MMIC_ERROR;
3220         case RX_RES_STATUS_SEC_TYPE_WEP:
3221         case RX_RES_STATUS_SEC_TYPE_CCMP:
3222                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3223                     RX_RES_STATUS_DECRYPT_OK) {
3224                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3225                         stats->flag |= RX_FLAG_DECRYPTED;
3226                 }
3227                 break;
3228
3229         default:
3230                 break;
3231         }
3232 }
3233
3234 void iwl4965_handle_data_packet_monitor(struct iwl4965_priv *priv,
3235                                     struct iwl4965_rx_mem_buffer *rxb,
3236                                     void *data, short len,
3237                                     struct ieee80211_rx_status *stats,
3238                                     u16 phy_flags)
3239 {
3240         struct iwl4965_rt_rx_hdr *iwl4965_rt;
3241
3242         /* First cache any information we need before we overwrite
3243          * the information provided in the skb from the hardware */
3244         s8 signal = stats->ssi;
3245         s8 noise = 0;
3246         int rate = stats->rate;
3247         u64 tsf = stats->mactime;
3248         __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3249
3250         /* We received data from the HW, so stop the watchdog */
3251         if (len > IWL_RX_BUF_SIZE - sizeof(*iwl4965_rt)) {
3252                 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3253                 return;
3254         }
3255
3256         /* copy the frame data to write after where the radiotap header goes */
3257         iwl4965_rt = (void *)rxb->skb->data;
3258         memmove(iwl4965_rt->payload, data, len);
3259
3260         iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3261         iwl4965_rt->rt_hdr.it_pad = 0; /* always good to zero */
3262
3263         /* total header + data */
3264         iwl4965_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl4965_rt));
3265
3266         /* Set the size of the skb to the size of the frame */
3267         skb_put(rxb->skb, sizeof(*iwl4965_rt) + len);
3268
3269         /* Big bitfield of all the fields we provide in radiotap */
3270         iwl4965_rt->rt_hdr.it_present =
3271             cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3272                         (1 << IEEE80211_RADIOTAP_FLAGS) |
3273                         (1 << IEEE80211_RADIOTAP_RATE) |
3274                         (1 << IEEE80211_RADIOTAP_CHANNEL) |
3275                         (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3276                         (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3277                         (1 << IEEE80211_RADIOTAP_ANTENNA));
3278
3279         /* Zero the flags, we'll add to them as we go */
3280         iwl4965_rt->rt_flags = 0;
3281
3282         iwl4965_rt->rt_tsf = cpu_to_le64(tsf);
3283
3284         /* Convert to dBm */
3285         iwl4965_rt->rt_dbmsignal = signal;
3286         iwl4965_rt->rt_dbmnoise = noise;
3287
3288         /* Convert the channel frequency and set the flags */
3289         iwl4965_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3290         if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3291                 iwl4965_rt->rt_chbitmask =
3292                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3293         else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3294                 iwl4965_rt->rt_chbitmask =
3295                     cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3296         else    /* 802.11g */
3297                 iwl4965_rt->rt_chbitmask =
3298                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3299
3300         rate = iwl4965_rate_index_from_plcp(rate);
3301         if (rate == -1)
3302                 iwl4965_rt->rt_rate = 0;
3303         else
3304                 iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee;
3305
3306         /* antenna number */
3307         iwl4965_rt->rt_antenna =
3308                 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3309
3310         /* set the preamble flag if we have it */
3311         if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3312                 iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3313
3314         IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3315
3316         stats->flag |= RX_FLAG_RADIOTAP;
3317         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3318         rxb->skb = NULL;
3319 }
3320
3321
3322 #define IWL_PACKET_RETRY_TIME HZ
3323
3324 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3325 {
3326         u16 sc = le16_to_cpu(header->seq_ctrl);
3327         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3328         u16 frag = sc & IEEE80211_SCTL_FRAG;
3329         u16 *last_seq, *last_frag;
3330         unsigned long *last_time;
3331
3332         switch (priv->iw_mode) {
3333         case IEEE80211_IF_TYPE_IBSS:{
3334                 struct list_head *p;
3335                 struct iwl4965_ibss_seq *entry = NULL;
3336                 u8 *mac = header->addr2;
3337                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3338
3339                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3340                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
3341                         if (!compare_ether_addr(entry->mac, mac))
3342                                 break;
3343                 }
3344                 if (p == &priv->ibss_mac_hash[index]) {
3345                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3346                         if (!entry) {
3347                                 IWL_ERROR("Cannot malloc new mac entry\n");
3348                                 return 0;
3349                         }
3350                         memcpy(entry->mac, mac, ETH_ALEN);
3351                         entry->seq_num = seq;
3352                         entry->frag_num = frag;
3353                         entry->packet_time = jiffies;
3354                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3355                         return 0;
3356                 }
3357                 last_seq = &entry->seq_num;
3358                 last_frag = &entry->frag_num;
3359                 last_time = &entry->packet_time;
3360                 break;
3361         }
3362         case IEEE80211_IF_TYPE_STA:
3363                 last_seq = &priv->last_seq_num;
3364                 last_frag = &priv->last_frag_num;
3365                 last_time = &priv->last_packet_time;
3366                 break;
3367         default:
3368                 return 0;
3369         }
3370         if ((*last_seq == seq) &&
3371             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3372                 if (*last_frag == frag)
3373                         goto drop;
3374                 if (*last_frag + 1 != frag)
3375                         /* out-of-order fragment */
3376                         goto drop;
3377         } else
3378                 *last_seq = seq;
3379
3380         *last_frag = frag;
3381         *last_time = jiffies;
3382         return 0;
3383
3384  drop:
3385         return 1;
3386 }
3387
3388 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3389
3390 #include "iwl-spectrum.h"
3391
3392 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3393 #define BEACON_TIME_MASK_HIGH   0xFF000000
3394 #define TIME_UNIT               1024
3395
3396 /*
3397  * extended beacon time format
3398  * time in usec will be changed into a 32-bit value in 8:24 format
3399  * the high 1 byte is the beacon counts
3400  * the lower 3 bytes is the time in usec within one beacon interval
3401  */
3402
3403 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3404 {
3405         u32 quot;
3406         u32 rem;
3407         u32 interval = beacon_interval * 1024;
3408
3409         if (!interval || !usec)
3410                 return 0;
3411
3412         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3413         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3414
3415         return (quot << 24) + rem;
3416 }
3417
3418 /* base is usually what we get from ucode with each received frame,
3419  * the same as HW timer counter counting down
3420  */
3421
3422 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3423 {
3424         u32 base_low = base & BEACON_TIME_MASK_LOW;
3425         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3426         u32 interval = beacon_interval * TIME_UNIT;
3427         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3428             (addon & BEACON_TIME_MASK_HIGH);
3429
3430         if (base_low > addon_low)
3431                 res += base_low - addon_low;
3432         else if (base_low < addon_low) {
3433                 res += interval + base_low - addon_low;
3434                 res += (1 << 24);
3435         } else
3436                 res += (1 << 24);
3437
3438         return cpu_to_le32(res);
3439 }
3440
3441 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3442                                struct ieee80211_measurement_params *params,
3443                                u8 type)
3444 {
3445         struct iwl4965_spectrum_cmd spectrum;
3446         struct iwl4965_rx_packet *res;
3447         struct iwl4965_host_cmd cmd = {
3448                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3449                 .data = (void *)&spectrum,
3450                 .meta.flags = CMD_WANT_SKB,
3451         };
3452         u32 add_time = le64_to_cpu(params->start_time);
3453         int rc;
3454         int spectrum_resp_status;
3455         int duration = le16_to_cpu(params->duration);
3456
3457         if (iwl4965_is_associated(priv))
3458                 add_time =
3459                     iwl4965_usecs_to_beacons(
3460                         le64_to_cpu(params->start_time) - priv->last_tsf,
3461                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3462
3463         memset(&spectrum, 0, sizeof(spectrum));
3464
3465         spectrum.channel_count = cpu_to_le16(1);
3466         spectrum.flags =
3467             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3468         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3469         cmd.len = sizeof(spectrum);
3470         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3471
3472         if (iwl4965_is_associated(priv))
3473                 spectrum.start_time =
3474                     iwl4965_add_beacon_time(priv->last_beacon_time,
3475                                 add_time,
3476                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3477         else
3478                 spectrum.start_time = 0;
3479
3480         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3481         spectrum.channels[0].channel = params->channel;
3482         spectrum.channels[0].type = type;
3483         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3484                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3485                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3486
3487         rc = iwl4965_send_cmd_sync(priv, &cmd);
3488         if (rc)
3489                 return rc;
3490
3491         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3492         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3493                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3494                 rc = -EIO;
3495         }
3496
3497         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3498         switch (spectrum_resp_status) {
3499         case 0:         /* Command will be handled */
3500                 if (res->u.spectrum.id != 0xff) {
3501                         IWL_DEBUG_INFO
3502                             ("Replaced existing measurement: %d\n",
3503                              res->u.spectrum.id);
3504                         priv->measurement_status &= ~MEASUREMENT_READY;
3505                 }
3506                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3507                 rc = 0;
3508                 break;
3509
3510         case 1:         /* Command will not be handled */
3511                 rc = -EAGAIN;
3512                 break;
3513         }
3514
3515         dev_kfree_skb_any(cmd.meta.u.skb);
3516
3517         return rc;
3518 }
3519 #endif
3520
3521 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3522                                  struct iwl4965_tx_info *tx_sta)
3523 {
3524
3525         tx_sta->status.ack_signal = 0;
3526         tx_sta->status.excessive_retries = 0;
3527         tx_sta->status.queue_length = 0;
3528         tx_sta->status.queue_number = 0;
3529
3530         if (in_interrupt())
3531                 ieee80211_tx_status_irqsafe(priv->hw,
3532                                             tx_sta->skb[0], &(tx_sta->status));
3533         else
3534                 ieee80211_tx_status(priv->hw,
3535                                     tx_sta->skb[0], &(tx_sta->status));
3536
3537         tx_sta->skb[0] = NULL;
3538 }
3539
3540 /**
3541  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3542  *
3543  * When FW advances 'R' index, all entries between old and new 'R' index
3544  * need to be reclaimed. As result, some free space forms.  If there is
3545  * enough free space (> low mark), wake the stack that feeds us.
3546  */
3547 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3548 {
3549         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3550         struct iwl4965_queue *q = &txq->q;
3551         int nfreed = 0;
3552
3553         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3554                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3555                           "is out of range [0-%d] %d %d.\n", txq_id,
3556                           index, q->n_bd, q->write_ptr, q->read_ptr);
3557                 return 0;
3558         }
3559
3560         for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3561                 q->read_ptr != index;
3562                 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3563                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3564                         iwl4965_txstatus_to_ieee(priv,
3565                                         &(txq->txb[txq->q.read_ptr]));
3566                         iwl4965_hw_txq_free_tfd(priv, txq);
3567                 } else if (nfreed > 1) {
3568                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3569                                         q->write_ptr, q->read_ptr);
3570                         queue_work(priv->workqueue, &priv->restart);
3571                 }
3572                 nfreed++;
3573         }
3574
3575         if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3576                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3577                         priv->mac80211_registered)
3578                 ieee80211_wake_queue(priv->hw, txq_id);
3579
3580
3581         return nfreed;
3582 }
3583
3584 static int iwl4965_is_tx_success(u32 status)
3585 {
3586         status &= TX_STATUS_MSK;
3587         return (status == TX_STATUS_SUCCESS)
3588             || (status == TX_STATUS_DIRECT_DONE);
3589 }
3590
3591 /******************************************************************************
3592  *
3593  * Generic RX handler implementations
3594  *
3595  ******************************************************************************/
3596 #ifdef CONFIG_IWL4965_HT
3597 #ifdef CONFIG_IWL4965_HT_AGG
3598
3599 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3600                                     struct ieee80211_hdr *hdr)
3601 {
3602         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3603                 return IWL_AP_ID;
3604         else {
3605                 u8 *da = ieee80211_get_DA(hdr);
3606                 return iwl4965_hw_find_station(priv, da);
3607         }
3608 }
3609
3610 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3611         struct iwl4965_priv *priv, int txq_id, int idx)
3612 {
3613         if (priv->txq[txq_id].txb[idx].skb[0])
3614                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3615                                 txb[idx].skb[0]->data;
3616         return NULL;
3617 }
3618
3619 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3620 {
3621         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3622                                 tx_resp->frame_count);
3623         return le32_to_cpu(*scd_ssn) & MAX_SN;
3624
3625 }
3626
3627 /**
3628  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3629  */
3630 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3631                                       struct iwl4965_ht_agg *agg,
3632                                       struct iwl4965_tx_resp *tx_resp,
3633                                       u16 start_idx)
3634 {
3635         u32 status;
3636         __le32 *frame_status = &tx_resp->status;
3637         struct ieee80211_tx_status *tx_status = NULL;
3638         struct ieee80211_hdr *hdr = NULL;
3639         int i, sh;
3640         int txq_id, idx;
3641         u16 seq;
3642
3643         if (agg->wait_for_ba)
3644                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3645
3646         agg->frame_count = tx_resp->frame_count;
3647         agg->start_idx = start_idx;
3648         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3649         agg->bitmap0 = agg->bitmap1 = 0;
3650
3651         /* # frames attempted by Tx command */
3652         if (agg->frame_count == 1) {
3653                 /* Only one frame was attempted; no block-ack will arrive */
3654                 struct iwl4965_tx_queue *txq ;
3655                 status = le32_to_cpu(frame_status[0]);
3656
3657                 txq_id = agg->txq_id;
3658                 txq = &priv->txq[txq_id];
3659                 /* FIXME: code repetition */
3660                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3661                                    agg->frame_count, agg->start_idx);
3662
3663                 tx_status = &(priv->txq[txq_id].txb[txq->q.read_ptr].status);
3664                 tx_status->retry_count = tx_resp->failure_frame;
3665                 tx_status->queue_number = status & 0xff;
3666                 tx_status->queue_length = tx_resp->bt_kill_count;
3667                 tx_status->queue_length |= tx_resp->failure_rts;
3668
3669                 tx_status->flags = iwl4965_is_tx_success(status)?
3670                         IEEE80211_TX_STATUS_ACK : 0;
3671                 tx_status->control.tx_rate =
3672                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3673                 /* FIXME: code repetition end */
3674
3675                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3676                                     status & 0xff, tx_resp->failure_frame);
3677                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3678                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3679
3680                 agg->wait_for_ba = 0;
3681         } else {
3682                 /* Two or more frames were attempted; expect block-ack */
3683                 u64 bitmap = 0;
3684                 int start = agg->start_idx;
3685
3686                 /* Construct bit-map of pending frames within Tx window */
3687                 for (i = 0; i < agg->frame_count; i++) {
3688                         u16 sc;
3689                         status = le32_to_cpu(frame_status[i]);
3690                         seq  = status >> 16;
3691                         idx = SEQ_TO_INDEX(seq);
3692                         txq_id = SEQ_TO_QUEUE(seq);
3693
3694                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3695                                       AGG_TX_STATE_ABORT_MSK))
3696                                 continue;
3697
3698                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3699                                            agg->frame_count, txq_id, idx);
3700
3701                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3702
3703                         sc = le16_to_cpu(hdr->seq_ctrl);
3704                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3705                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3706                                           " idx=%d, seq_idx=%d, seq=%d\n",
3707                                           idx, SEQ_TO_SN(sc),
3708                                           hdr->seq_ctrl);
3709                                 return -1;
3710                         }
3711
3712                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3713                                            i, idx, SEQ_TO_SN(sc));
3714
3715                         sh = idx - start;
3716                         if (sh > 64) {
3717                                 sh = (start - idx) + 0xff;
3718                                 bitmap = bitmap << sh;
3719                                 sh = 0;
3720                                 start = idx;
3721                         } else if (sh < -64)
3722                                 sh  = 0xff - (start - idx);
3723                         else if (sh < 0) {
3724                                 sh = start - idx;
3725                                 start = idx;
3726                                 bitmap = bitmap << sh;
3727                                 sh = 0;
3728                         }
3729                         bitmap |= (1 << sh);
3730                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3731                                            start, (u32)(bitmap & 0xFFFFFFFF));
3732                 }
3733
3734                 agg->bitmap0 = bitmap & 0xFFFFFFFF;
3735                 agg->bitmap1 = bitmap >> 32;
3736                 agg->start_idx = start;
3737                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3738                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3739                                    agg->frame_count, agg->start_idx,
3740                                    agg->bitmap0);
3741
3742                 if (bitmap)
3743                         agg->wait_for_ba = 1;
3744         }
3745         return 0;
3746 }
3747 #endif
3748 #endif
3749
3750 /**
3751  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3752  */
3753 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3754                             struct iwl4965_rx_mem_buffer *rxb)
3755 {
3756         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3757         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3758         int txq_id = SEQ_TO_QUEUE(sequence);
3759         int index = SEQ_TO_INDEX(sequence);
3760         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3761         struct ieee80211_tx_status *tx_status;
3762         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3763         u32  status = le32_to_cpu(tx_resp->status);
3764 #ifdef CONFIG_IWL4965_HT
3765 #ifdef CONFIG_IWL4965_HT_AGG
3766         int tid, sta_id;
3767 #endif
3768 #endif
3769
3770         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3771                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3772                           "is out of range [0-%d] %d %d\n", txq_id,
3773                           index, txq->q.n_bd, txq->q.write_ptr,
3774                           txq->q.read_ptr);
3775                 return;
3776         }
3777
3778 #ifdef CONFIG_IWL4965_HT
3779 #ifdef CONFIG_IWL4965_HT_AGG
3780         if (txq->sched_retry) {
3781                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3782                 struct ieee80211_hdr *hdr =
3783                         iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3784                 struct iwl4965_ht_agg *agg = NULL;
3785                 __le16 *qc = ieee80211_get_qos_ctrl(hdr);
3786
3787                 if (qc == NULL) {
3788                         IWL_ERROR("BUG_ON qc is null!!!!\n");
3789                         return;
3790                 }
3791
3792                 tid = le16_to_cpu(*qc) & 0xf;
3793
3794                 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3795                 if (unlikely(sta_id == IWL_INVALID_STATION)) {
3796                         IWL_ERROR("Station not known for\n");
3797                         return;
3798                 }
3799
3800                 agg = &priv->stations[sta_id].tid[tid].agg;
3801
3802                 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3803
3804                 if ((tx_resp->frame_count == 1) &&
3805                     !iwl4965_is_tx_success(status)) {
3806                         /* TODO: send BAR */
3807                 }
3808
3809                 if ((txq->q.read_ptr != (scd_ssn & 0xff))) {
3810                         index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3811                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3812                                            "%d index %d\n", scd_ssn , index);
3813                         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3814                 }
3815         } else {
3816 #endif /* CONFIG_IWL4965_HT_AGG */
3817 #endif /* CONFIG_IWL4965_HT */
3818         tx_status = &(txq->txb[txq->q.read_ptr].status);
3819
3820         tx_status->retry_count = tx_resp->failure_frame;
3821         tx_status->queue_number = status;
3822         tx_status->queue_length = tx_resp->bt_kill_count;
3823         tx_status->queue_length |= tx_resp->failure_rts;
3824
3825         tx_status->flags =
3826             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3827
3828         tx_status->control.tx_rate =
3829                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3830
3831         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3832                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3833                      status, le32_to_cpu(tx_resp->rate_n_flags),
3834                      tx_resp->failure_frame);
3835
3836         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3837         if (index != -1)
3838                 iwl4965_tx_queue_reclaim(priv, txq_id, index);
3839 #ifdef CONFIG_IWL4965_HT
3840 #ifdef CONFIG_IWL4965_HT_AGG
3841         }
3842 #endif /* CONFIG_IWL4965_HT_AGG */
3843 #endif /* CONFIG_IWL4965_HT */
3844
3845         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3846                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3847 }
3848
3849
3850 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3851                                struct iwl4965_rx_mem_buffer *rxb)
3852 {
3853         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3854         struct iwl4965_alive_resp *palive;
3855         struct delayed_work *pwork;
3856
3857         palive = &pkt->u.alive_frame;
3858
3859         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3860                        "0x%01X 0x%01X\n",
3861                        palive->is_valid, palive->ver_type,
3862                        palive->ver_subtype);
3863
3864         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3865                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3866                 memcpy(&priv->card_alive_init,
3867                        &pkt->u.alive_frame,
3868                        sizeof(struct iwl4965_init_alive_resp));
3869                 pwork = &priv->init_alive_start;
3870         } else {
3871                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3872                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3873                        sizeof(struct iwl4965_alive_resp));
3874                 pwork = &priv->alive_start;
3875         }
3876
3877         /* We delay the ALIVE response by 5ms to
3878          * give the HW RF Kill time to activate... */
3879         if (palive->is_valid == UCODE_VALID_OK)
3880                 queue_delayed_work(priv->workqueue, pwork,
3881                                    msecs_to_jiffies(5));
3882         else
3883                 IWL_WARNING("uCode did not respond OK.\n");
3884 }
3885
3886 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3887                                  struct iwl4965_rx_mem_buffer *rxb)
3888 {
3889         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3890
3891         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3892         return;
3893 }
3894
3895 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3896                                struct iwl4965_rx_mem_buffer *rxb)
3897 {
3898         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3899
3900         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3901                 "seq 0x%04X ser 0x%08X\n",
3902                 le32_to_cpu(pkt->u.err_resp.error_type),
3903                 get_cmd_string(pkt->u.err_resp.cmd_id),
3904                 pkt->u.err_resp.cmd_id,
3905                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3906                 le32_to_cpu(pkt->u.err_resp.error_info));
3907 }
3908
3909 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3910
3911 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3912 {
3913         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3914         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3915         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3916         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3917                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3918         rxon->channel = csa->channel;
3919         priv->staging_rxon.channel = csa->channel;
3920 }
3921
3922 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3923                                           struct iwl4965_rx_mem_buffer *rxb)
3924 {
3925 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3926         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3927         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3928
3929         if (!report->state) {
3930                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3931                           "Spectrum Measure Notification: Start\n");
3932                 return;
3933         }
3934
3935         memcpy(&priv->measure_report, report, sizeof(*report));
3936         priv->measurement_status |= MEASUREMENT_READY;
3937 #endif
3938 }
3939
3940 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3941                                   struct iwl4965_rx_mem_buffer *rxb)
3942 {
3943 #ifdef CONFIG_IWL4965_DEBUG
3944         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3945         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3946         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3947                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3948 #endif
3949 }
3950
3951 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3952                                              struct iwl4965_rx_mem_buffer *rxb)
3953 {
3954         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3955         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3956                         "notification for %s:\n",
3957                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3958         iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3959 }
3960
3961 static void iwl4965_bg_beacon_update(struct work_struct *work)
3962 {
3963         struct iwl4965_priv *priv =
3964                 container_of(work, struct iwl4965_priv, beacon_update);
3965         struct sk_buff *beacon;
3966
3967         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3968         beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3969
3970         if (!beacon) {
3971                 IWL_ERROR("update beacon failed\n");
3972                 return;
3973         }
3974
3975         mutex_lock(&priv->mutex);
3976         /* new beacon skb is allocated every time; dispose previous.*/
3977         if (priv->ibss_beacon)
3978                 dev_kfree_skb(priv->ibss_beacon);
3979
3980         priv->ibss_beacon = beacon;
3981         mutex_unlock(&priv->mutex);
3982
3983         iwl4965_send_beacon_cmd(priv);
3984 }
3985
3986 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3987                                 struct iwl4965_rx_mem_buffer *rxb)
3988 {
3989 #ifdef CONFIG_IWL4965_DEBUG
3990         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3991         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3992         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3993
3994         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3995                 "tsf %d %d rate %d\n",
3996                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3997                 beacon->beacon_notify_hdr.failure_frame,
3998                 le32_to_cpu(beacon->ibss_mgr_status),
3999                 le32_to_cpu(beacon->high_tsf),
4000                 le32_to_cpu(beacon->low_tsf), rate);
4001 #endif
4002
4003         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4004             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
4005                 queue_work(priv->workqueue, &priv->beacon_update);
4006 }
4007
4008 /* Service response to REPLY_SCAN_CMD (0x80) */
4009 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
4010                               struct iwl4965_rx_mem_buffer *rxb)
4011 {
4012 #ifdef CONFIG_IWL4965_DEBUG
4013         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4014         struct iwl4965_scanreq_notification *notif =
4015             (struct iwl4965_scanreq_notification *)pkt->u.raw;
4016
4017         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
4018 #endif
4019 }
4020
4021 /* Service SCAN_START_NOTIFICATION (0x82) */
4022 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
4023                                     struct iwl4965_rx_mem_buffer *rxb)
4024 {
4025         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4026         struct iwl4965_scanstart_notification *notif =
4027             (struct iwl4965_scanstart_notification *)pkt->u.raw;
4028         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
4029         IWL_DEBUG_SCAN("Scan start: "
4030                        "%d [802.11%s] "
4031                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
4032                        notif->channel,
4033                        notif->band ? "bg" : "a",
4034                        notif->tsf_high,
4035                        notif->tsf_low, notif->status, notif->beacon_timer);
4036 }
4037
4038 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
4039 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
4040                                       struct iwl4965_rx_mem_buffer *rxb)
4041 {
4042         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4043         struct iwl4965_scanresults_notification *notif =
4044             (struct iwl4965_scanresults_notification *)pkt->u.raw;
4045
4046         IWL_DEBUG_SCAN("Scan ch.res: "
4047                        "%d [802.11%s] "
4048                        "(TSF: 0x%08X:%08X) - %d "
4049                        "elapsed=%lu usec (%dms since last)\n",
4050                        notif->channel,
4051                        notif->band ? "bg" : "a",
4052                        le32_to_cpu(notif->tsf_high),
4053                        le32_to_cpu(notif->tsf_low),
4054                        le32_to_cpu(notif->statistics[0]),
4055                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
4056                        jiffies_to_msecs(elapsed_jiffies
4057                                         (priv->last_scan_jiffies, jiffies)));
4058
4059         priv->last_scan_jiffies = jiffies;
4060         priv->next_scan_jiffies = 0;
4061 }
4062
4063 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
4064 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
4065                                        struct iwl4965_rx_mem_buffer *rxb)
4066 {
4067         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4068         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
4069
4070         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
4071                        scan_notif->scanned_channels,
4072                        scan_notif->tsf_low,
4073                        scan_notif->tsf_high, scan_notif->status);
4074
4075         /* The HW is no longer scanning */
4076         clear_bit(STATUS_SCAN_HW, &priv->status);
4077
4078         /* The scan completion notification came in, so kill that timer... */
4079         cancel_delayed_work(&priv->scan_check);
4080
4081         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
4082                        (priv->scan_bands == 2) ? "2.4" : "5.2",
4083                        jiffies_to_msecs(elapsed_jiffies
4084                                         (priv->scan_pass_start, jiffies)));
4085
4086         /* Remove this scanned band from the list
4087          * of pending bands to scan */
4088         priv->scan_bands--;
4089
4090         /* If a request to abort was given, or the scan did not succeed
4091          * then we reset the scan state machine and terminate,
4092          * re-queuing another scan if one has been requested */
4093         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4094                 IWL_DEBUG_INFO("Aborted scan completed.\n");
4095                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
4096         } else {
4097                 /* If there are more bands on this scan pass reschedule */
4098                 if (priv->scan_bands > 0)
4099                         goto reschedule;
4100         }
4101
4102         priv->last_scan_jiffies = jiffies;
4103         priv->next_scan_jiffies = 0;
4104         IWL_DEBUG_INFO("Setting scan to off\n");
4105
4106         clear_bit(STATUS_SCANNING, &priv->status);
4107
4108         IWL_DEBUG_INFO("Scan took %dms\n",
4109                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4110
4111         queue_work(priv->workqueue, &priv->scan_completed);
4112
4113         return;
4114
4115 reschedule:
4116         priv->scan_pass_start = jiffies;
4117         queue_work(priv->workqueue, &priv->request_scan);
4118 }
4119
4120 /* Handle notification from uCode that card's power state is changing
4121  * due to software, hardware, or critical temperature RFKILL */
4122 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4123                                     struct iwl4965_rx_mem_buffer *rxb)
4124 {
4125         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4126         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4127         unsigned long status = priv->status;
4128
4129         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4130                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4131                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4132
4133         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4134                      RF_CARD_DISABLED)) {
4135
4136                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4137                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4138
4139                 if (!iwl4965_grab_nic_access(priv)) {
4140                         iwl4965_write_direct32(
4141                                 priv, HBUS_TARG_MBX_C,
4142                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4143
4144                         iwl4965_release_nic_access(priv);
4145                 }
4146
4147                 if (!(flags & RXON_CARD_DISABLED)) {
4148                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4149                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4150                         if (!iwl4965_grab_nic_access(priv)) {
4151                                 iwl4965_write_direct32(
4152                                         priv, HBUS_TARG_MBX_C,
4153                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4154
4155                                 iwl4965_release_nic_access(priv);
4156                         }
4157                 }
4158
4159                 if (flags & RF_CARD_DISABLED) {
4160                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4161                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4162                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4163                         if (!iwl4965_grab_nic_access(priv))
4164                                 iwl4965_release_nic_access(priv);
4165                 }
4166         }
4167
4168         if (flags & HW_CARD_DISABLED)
4169                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4170         else
4171                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4172
4173
4174         if (flags & SW_CARD_DISABLED)
4175                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4176         else
4177                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4178
4179         if (!(flags & RXON_CARD_DISABLED))
4180                 iwl4965_scan_cancel(priv);
4181
4182         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4183              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4184             (test_bit(STATUS_RF_KILL_SW, &status) !=
4185              test_bit(STATUS_RF_KILL_SW, &priv->status)))
4186                 queue_work(priv->workqueue, &priv->rf_kill);
4187         else
4188                 wake_up_interruptible(&priv->wait_command_queue);
4189 }
4190
4191 /**
4192  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4193  *
4194  * Setup the RX handlers for each of the reply types sent from the uCode
4195  * to the host.
4196  *
4197  * This function chains into the hardware specific files for them to setup
4198  * any hardware specific handlers as well.
4199  */
4200 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4201 {
4202         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4203         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4204         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4205         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4206         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4207             iwl4965_rx_spectrum_measure_notif;
4208         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4209         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4210             iwl4965_rx_pm_debug_statistics_notif;
4211         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4212
4213         /*
4214          * The same handler is used for both the REPLY to a discrete
4215          * statistics request from the host as well as for the periodic
4216          * statistics notifications (after received beacons) from the uCode.
4217          */
4218         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4219         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4220
4221         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4222         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4223         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4224             iwl4965_rx_scan_results_notif;
4225         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4226             iwl4965_rx_scan_complete_notif;
4227         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4228         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4229
4230         /* Set up hardware specific Rx handlers */
4231         iwl4965_hw_rx_handler_setup(priv);
4232 }
4233
4234 /**
4235  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4236  * @rxb: Rx buffer to reclaim
4237  *
4238  * If an Rx buffer has an async callback associated with it the callback
4239  * will be executed.  The attached skb (if present) will only be freed
4240  * if the callback returns 1
4241  */
4242 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4243                                 struct iwl4965_rx_mem_buffer *rxb)
4244 {
4245         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4246         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4247         int txq_id = SEQ_TO_QUEUE(sequence);
4248         int index = SEQ_TO_INDEX(sequence);
4249         int huge = sequence & SEQ_HUGE_FRAME;
4250         int cmd_index;
4251         struct iwl4965_cmd *cmd;
4252
4253         /* If a Tx command is being handled and it isn't in the actual
4254          * command queue then there a command routing bug has been introduced
4255          * in the queue management code. */
4256         if (txq_id != IWL_CMD_QUEUE_NUM)
4257                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4258                           txq_id, pkt->hdr.cmd);
4259         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4260
4261         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4262         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4263
4264         /* Input error checking is done when commands are added to queue. */
4265         if (cmd->meta.flags & CMD_WANT_SKB) {
4266                 cmd->meta.source->u.skb = rxb->skb;
4267                 rxb->skb = NULL;
4268         } else if (cmd->meta.u.callback &&
4269                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
4270                 rxb->skb = NULL;
4271
4272         iwl4965_tx_queue_reclaim(priv, txq_id, index);
4273
4274         if (!(cmd->meta.flags & CMD_ASYNC)) {
4275                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4276                 wake_up_interruptible(&priv->wait_command_queue);
4277         }
4278 }
4279
4280 /************************** RX-FUNCTIONS ****************************/
4281 /*
4282  * Rx theory of operation
4283  *
4284  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4285  * each of which point to Receive Buffers to be filled by 4965.  These get
4286  * used not only for Rx frames, but for any command response or notification
4287  * from the 4965.  The driver and 4965 manage the Rx buffers by means
4288  * of indexes into the circular buffer.
4289  *
4290  * Rx Queue Indexes
4291  * The host/firmware share two index registers for managing the Rx buffers.
4292  *
4293  * The READ index maps to the first position that the firmware may be writing
4294  * to -- the driver can read up to (but not including) this position and get
4295  * good data.
4296  * The READ index is managed by the firmware once the card is enabled.
4297  *
4298  * The WRITE index maps to the last position the driver has read from -- the
4299  * position preceding WRITE is the last slot the firmware can place a packet.
4300  *
4301  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4302  * WRITE = READ.
4303  *
4304  * During initialization, the host sets up the READ queue position to the first
4305  * INDEX position, and WRITE to the last (READ - 1 wrapped)
4306  *
4307  * When the firmware places a packet in a buffer, it will advance the READ index
4308  * and fire the RX interrupt.  The driver can then query the READ index and
4309  * process as many packets as possible, moving the WRITE index forward as it
4310  * resets the Rx queue buffers with new memory.
4311  *
4312  * The management in the driver is as follows:
4313  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
4314  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4315  *   to replenish the iwl->rxq->rx_free.
4316  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4317  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
4318  *   'processed' and 'read' driver indexes as well)
4319  * + A received packet is processed and handed to the kernel network stack,
4320  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
4321  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4322  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4323  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
4324  *   were enough free buffers and RX_STALLED is set it is cleared.
4325  *
4326  *
4327  * Driver sequence:
4328  *
4329  * iwl4965_rx_queue_alloc()   Allocates rx_free
4330  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
4331  *                            iwl4965_rx_queue_restock
4332  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4333  *                            queue, updates firmware pointers, and updates
4334  *                            the WRITE index.  If insufficient rx_free buffers
4335  *                            are available, schedules iwl4965_rx_replenish
4336  *
4337  * -- enable interrupts --
4338  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
4339  *                            READ INDEX, detaching the SKB from the pool.
4340  *                            Moves the packet buffer from queue to rx_used.
4341  *                            Calls iwl4965_rx_queue_restock to refill any empty
4342  *                            slots.
4343  * ...
4344  *
4345  */
4346
4347 /**
4348  * iwl4965_rx_queue_space - Return number of free slots available in queue.
4349  */
4350 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4351 {
4352         int s = q->read - q->write;
4353         if (s <= 0)
4354                 s += RX_QUEUE_SIZE;
4355         /* keep some buffer to not confuse full and empty queue */
4356         s -= 2;
4357         if (s < 0)
4358                 s = 0;
4359         return s;
4360 }
4361
4362 /**
4363  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4364  */
4365 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4366 {
4367         u32 reg = 0;
4368         int rc = 0;
4369         unsigned long flags;
4370
4371         spin_lock_irqsave(&q->lock, flags);
4372
4373         if (q->need_update == 0)
4374                 goto exit_unlock;
4375
4376         /* If power-saving is in use, make sure device is awake */
4377         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4378                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4379
4380                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4381                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4382                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4383                         goto exit_unlock;
4384                 }
4385
4386                 rc = iwl4965_grab_nic_access(priv);
4387                 if (rc)
4388                         goto exit_unlock;
4389
4390                 /* Device expects a multiple of 8 */
4391                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4392                                      q->write & ~0x7);
4393                 iwl4965_release_nic_access(priv);
4394
4395         /* Else device is assumed to be awake */
4396         } else
4397                 /* Device expects a multiple of 8 */
4398                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4399
4400
4401         q->need_update = 0;
4402
4403  exit_unlock:
4404         spin_unlock_irqrestore(&q->lock, flags);
4405         return rc;
4406 }
4407
4408 /**
4409  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4410  */
4411 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4412                                           dma_addr_t dma_addr)
4413 {
4414         return cpu_to_le32((u32)(dma_addr >> 8));
4415 }
4416
4417
4418 /**
4419  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4420  *
4421  * If there are slots in the RX queue that need to be restocked,
4422  * and we have free pre-allocated buffers, fill the ranks as much
4423  * as we can, pulling from rx_free.
4424  *
4425  * This moves the 'write' index forward to catch up with 'processed', and
4426  * also updates the memory address in the firmware to reference the new
4427  * target buffer.
4428  */
4429 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4430 {
4431         struct iwl4965_rx_queue *rxq = &priv->rxq;
4432         struct list_head *element;
4433         struct iwl4965_rx_mem_buffer *rxb;
4434         unsigned long flags;
4435         int write, rc;
4436
4437         spin_lock_irqsave(&rxq->lock, flags);
4438         write = rxq->write & ~0x7;
4439         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4440                 /* Get next free Rx buffer, remove from free list */
4441                 element = rxq->rx_free.next;
4442                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4443                 list_del(element);
4444
4445                 /* Point to Rx buffer via next RBD in circular buffer */
4446                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4447                 rxq->queue[rxq->write] = rxb;
4448                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4449                 rxq->free_count--;
4450         }
4451         spin_unlock_irqrestore(&rxq->lock, flags);
4452         /* If the pre-allocated buffer pool is dropping low, schedule to
4453          * refill it */
4454         if (rxq->free_count <= RX_LOW_WATERMARK)
4455                 queue_work(priv->workqueue, &priv->rx_replenish);
4456
4457
4458         /* If we've added more space for the firmware to place data, tell it.
4459          * Increment device's write pointer in multiples of 8. */
4460         if ((write != (rxq->write & ~0x7))
4461             || (abs(rxq->write - rxq->read) > 7)) {
4462                 spin_lock_irqsave(&rxq->lock, flags);
4463                 rxq->need_update = 1;
4464                 spin_unlock_irqrestore(&rxq->lock, flags);
4465                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4466                 if (rc)
4467                         return rc;
4468         }
4469
4470         return 0;
4471 }
4472
4473 /**
4474  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4475  *
4476  * When moving to rx_free an SKB is allocated for the slot.
4477  *
4478  * Also restock the Rx queue via iwl4965_rx_queue_restock.
4479  * This is called as a scheduled work item (except for during initialization)
4480  */
4481 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4482 {
4483         struct iwl4965_rx_queue *rxq = &priv->rxq;
4484         struct list_head *element;
4485         struct iwl4965_rx_mem_buffer *rxb;
4486         unsigned long flags;
4487         spin_lock_irqsave(&rxq->lock, flags);
4488         while (!list_empty(&rxq->rx_used)) {
4489                 element = rxq->rx_used.next;
4490                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4491
4492                 /* Alloc a new receive buffer */
4493                 rxb->skb =
4494                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4495                 if (!rxb->skb) {
4496                         if (net_ratelimit())
4497                                 printk(KERN_CRIT DRV_NAME
4498                                        ": Can not allocate SKB buffers\n");
4499                         /* We don't reschedule replenish work here -- we will
4500                          * call the restock method and if it still needs
4501                          * more buffers it will schedule replenish */
4502                         break;
4503                 }
4504                 priv->alloc_rxb_skb++;
4505                 list_del(element);
4506
4507                 /* Get physical address of RB/SKB */
4508                 rxb->dma_addr =
4509                     pci_map_single(priv->pci_dev, rxb->skb->data,
4510                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4511                 list_add_tail(&rxb->list, &rxq->rx_free);
4512                 rxq->free_count++;
4513         }
4514         spin_unlock_irqrestore(&rxq->lock, flags);
4515 }
4516
4517 /*
4518  * this should be called while priv->lock is locked
4519 */
4520 void __iwl4965_rx_replenish(void *data)
4521 {
4522         struct iwl4965_priv *priv = data;
4523
4524         iwl4965_rx_allocate(priv);
4525         iwl4965_rx_queue_restock(priv);
4526 }
4527
4528
4529 void iwl4965_rx_replenish(void *data)
4530 {
4531         struct iwl4965_priv *priv = data;
4532         unsigned long flags;
4533
4534         iwl4965_rx_allocate(priv);
4535
4536         spin_lock_irqsave(&priv->lock, flags);
4537         iwl4965_rx_queue_restock(priv);
4538         spin_unlock_irqrestore(&priv->lock, flags);
4539 }
4540
4541 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4542  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4543  * This free routine walks the list of POOL entries and if SKB is set to
4544  * non NULL it is unmapped and freed
4545  */
4546 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4547 {
4548         int i;
4549         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4550                 if (rxq->pool[i].skb != NULL) {
4551                         pci_unmap_single(priv->pci_dev,
4552                                          rxq->pool[i].dma_addr,
4553                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4554                         dev_kfree_skb(rxq->pool[i].skb);
4555                 }
4556         }
4557
4558         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4559                             rxq->dma_addr);
4560         rxq->bd = NULL;
4561 }
4562
4563 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4564 {
4565         struct iwl4965_rx_queue *rxq = &priv->rxq;
4566         struct pci_dev *dev = priv->pci_dev;
4567         int i;
4568
4569         spin_lock_init(&rxq->lock);
4570         INIT_LIST_HEAD(&rxq->rx_free);
4571         INIT_LIST_HEAD(&rxq->rx_used);
4572
4573         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4574         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4575         if (!rxq->bd)
4576                 return -ENOMEM;
4577
4578         /* Fill the rx_used queue with _all_ of the Rx buffers */
4579         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4580                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4581
4582         /* Set us so that we have processed and used all buffers, but have
4583          * not restocked the Rx queue with fresh buffers */
4584         rxq->read = rxq->write = 0;
4585         rxq->free_count = 0;
4586         rxq->need_update = 0;
4587         return 0;
4588 }
4589
4590 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4591 {
4592         unsigned long flags;
4593         int i;
4594         spin_lock_irqsave(&rxq->lock, flags);
4595         INIT_LIST_HEAD(&rxq->rx_free);
4596         INIT_LIST_HEAD(&rxq->rx_used);
4597         /* Fill the rx_used queue with _all_ of the Rx buffers */
4598         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4599                 /* In the reset function, these buffers may have been allocated
4600                  * to an SKB, so we need to unmap and free potential storage */
4601                 if (rxq->pool[i].skb != NULL) {
4602                         pci_unmap_single(priv->pci_dev,
4603                                          rxq->pool[i].dma_addr,
4604                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4605                         priv->alloc_rxb_skb--;
4606                         dev_kfree_skb(rxq->pool[i].skb);
4607                         rxq->pool[i].skb = NULL;
4608                 }
4609                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4610         }
4611
4612         /* Set us so that we have processed and used all buffers, but have
4613          * not restocked the Rx queue with fresh buffers */
4614         rxq->read = rxq->write = 0;
4615         rxq->free_count = 0;
4616         spin_unlock_irqrestore(&rxq->lock, flags);
4617 }
4618
4619 /* Convert linear signal-to-noise ratio into dB */
4620 static u8 ratio2dB[100] = {
4621 /*       0   1   2   3   4   5   6   7   8   9 */
4622          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4623         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4624         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4625         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4626         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4627         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4628         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4629         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4630         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4631         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4632 };
4633
4634 /* Calculates a relative dB value from a ratio of linear
4635  *   (i.e. not dB) signal levels.
4636  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4637 int iwl4965_calc_db_from_ratio(int sig_ratio)
4638 {
4639         /* 1000:1 or higher just report as 60 dB */
4640         if (sig_ratio >= 1000)
4641                 return 60;
4642
4643         /* 100:1 or higher, divide by 10 and use table,
4644          *   add 20 dB to make up for divide by 10 */
4645         if (sig_ratio >= 100)
4646                 return (20 + (int)ratio2dB[sig_ratio/10]);
4647
4648         /* We shouldn't see this */
4649         if (sig_ratio < 1)
4650                 return 0;
4651
4652         /* Use table for ratios 1:1 - 99:1 */
4653         return (int)ratio2dB[sig_ratio];
4654 }
4655
4656 #define PERFECT_RSSI (-20) /* dBm */
4657 #define WORST_RSSI (-95)   /* dBm */
4658 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4659
4660 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4661  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4662  *   about formulas used below. */
4663 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4664 {
4665         int sig_qual;
4666         int degradation = PERFECT_RSSI - rssi_dbm;
4667
4668         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4669          * as indicator; formula is (signal dbm - noise dbm).
4670          * SNR at or above 40 is a great signal (100%).
4671          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4672          * Weakest usable signal is usually 10 - 15 dB SNR. */
4673         if (noise_dbm) {
4674                 if (rssi_dbm - noise_dbm >= 40)
4675                         return 100;
4676                 else if (rssi_dbm < noise_dbm)
4677                         return 0;
4678                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4679
4680         /* Else use just the signal level.
4681          * This formula is a least squares fit of data points collected and
4682          *   compared with a reference system that had a percentage (%) display
4683          *   for signal quality. */
4684         } else
4685                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4686                             (15 * RSSI_RANGE + 62 * degradation)) /
4687                            (RSSI_RANGE * RSSI_RANGE);
4688
4689         if (sig_qual > 100)
4690                 sig_qual = 100;
4691         else if (sig_qual < 1)
4692                 sig_qual = 0;
4693
4694         return sig_qual;
4695 }
4696
4697 /**
4698  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4699  *
4700  * Uses the priv->rx_handlers callback function array to invoke
4701  * the appropriate handlers, including command responses,
4702  * frame-received notifications, and other notifications.
4703  */
4704 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4705 {
4706         struct iwl4965_rx_mem_buffer *rxb;
4707         struct iwl4965_rx_packet *pkt;
4708         struct iwl4965_rx_queue *rxq = &priv->rxq;
4709         u32 r, i;
4710         int reclaim;
4711         unsigned long flags;
4712         u8 fill_rx = 0;
4713         u32 count = 0;
4714
4715         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4716          * buffer that the driver may process (last buffer filled by ucode). */
4717         r = iwl4965_hw_get_rx_read(priv);
4718         i = rxq->read;
4719
4720         /* Rx interrupt, but nothing sent from uCode */
4721         if (i == r)
4722                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4723
4724         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4725                 fill_rx = 1;
4726
4727         while (i != r) {
4728                 rxb = rxq->queue[i];
4729
4730                 /* If an RXB doesn't have a Rx queue slot associated with it,
4731                  * then a bug has been introduced in the queue refilling
4732                  * routines -- catch it here */
4733                 BUG_ON(rxb == NULL);
4734
4735                 rxq->queue[i] = NULL;
4736
4737                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4738                                             IWL_RX_BUF_SIZE,
4739                                             PCI_DMA_FROMDEVICE);
4740                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4741
4742                 /* Reclaim a command buffer only if this packet is a response
4743                  *   to a (driver-originated) command.
4744                  * If the packet (e.g. Rx frame) originated from uCode,
4745                  *   there is no command buffer to reclaim.
4746                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4747                  *   but apparently a few don't get set; catch them here. */
4748                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4749                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4750                         (pkt->hdr.cmd != REPLY_4965_RX) &&
4751                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4752                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4753                         (pkt->hdr.cmd != REPLY_TX);
4754
4755                 /* Based on type of command response or notification,
4756                  *   handle those that need handling via function in
4757                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4758                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4759                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4760                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4761                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4762                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4763                 } else {
4764                         /* No handling needed */
4765                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4766                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4767                                 r, i, get_cmd_string(pkt->hdr.cmd),
4768                                 pkt->hdr.cmd);
4769                 }
4770
4771                 if (reclaim) {
4772                         /* Invoke any callbacks, transfer the skb to caller, and
4773                          * fire off the (possibly) blocking iwl4965_send_cmd()
4774                          * as we reclaim the driver command queue */
4775                         if (rxb && rxb->skb)
4776                                 iwl4965_tx_cmd_complete(priv, rxb);
4777                         else
4778                                 IWL_WARNING("Claim null rxb?\n");
4779                 }
4780
4781                 /* For now we just don't re-use anything.  We can tweak this
4782                  * later to try and re-use notification packets and SKBs that
4783                  * fail to Rx correctly */
4784                 if (rxb->skb != NULL) {
4785                         priv->alloc_rxb_skb--;
4786                         dev_kfree_skb_any(rxb->skb);
4787                         rxb->skb = NULL;
4788                 }
4789
4790                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4791                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4792                 spin_lock_irqsave(&rxq->lock, flags);
4793                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4794                 spin_unlock_irqrestore(&rxq->lock, flags);
4795                 i = (i + 1) & RX_QUEUE_MASK;
4796                 /* If there are a lot of unused frames,
4797                  * restock the Rx queue so ucode wont assert. */
4798                 if (fill_rx) {
4799                         count++;
4800                         if (count >= 8) {
4801                                 priv->rxq.read = i;
4802                                 __iwl4965_rx_replenish(priv);
4803                                 count = 0;
4804                         }
4805                 }
4806         }
4807
4808         /* Backtrack one entry */
4809         priv->rxq.read = i;
4810         iwl4965_rx_queue_restock(priv);
4811 }
4812
4813 /**
4814  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4815  */
4816 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4817                                   struct iwl4965_tx_queue *txq)
4818 {
4819         u32 reg = 0;
4820         int rc = 0;
4821         int txq_id = txq->q.id;
4822
4823         if (txq->need_update == 0)
4824                 return rc;
4825
4826         /* if we're trying to save power */
4827         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4828                 /* wake up nic if it's powered down ...
4829                  * uCode will wake up, and interrupt us again, so next
4830                  * time we'll skip this part. */
4831                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4832
4833                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4834                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4835                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4836                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4837                         return rc;
4838                 }
4839
4840                 /* restore this queue's parameters in nic hardware. */
4841                 rc = iwl4965_grab_nic_access(priv);
4842                 if (rc)
4843                         return rc;
4844                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4845                                      txq->q.write_ptr | (txq_id << 8));
4846                 iwl4965_release_nic_access(priv);
4847
4848         /* else not in power-save mode, uCode will never sleep when we're
4849          * trying to tx (during RFKILL, we're not trying to tx). */
4850         } else
4851                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4852                             txq->q.write_ptr | (txq_id << 8));
4853
4854         txq->need_update = 0;
4855
4856         return rc;
4857 }
4858
4859 #ifdef CONFIG_IWL4965_DEBUG
4860 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4861 {
4862         DECLARE_MAC_BUF(mac);
4863
4864         IWL_DEBUG_RADIO("RX CONFIG:\n");
4865         iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4866         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4867         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4868         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4869                         le32_to_cpu(rxon->filter_flags));
4870         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4871         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4872                         rxon->ofdm_basic_rates);
4873         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4874         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4875                         print_mac(mac, rxon->node_addr));
4876         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4877                         print_mac(mac, rxon->bssid_addr));
4878         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4879 }
4880 #endif
4881
4882 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4883 {
4884         IWL_DEBUG_ISR("Enabling interrupts\n");
4885         set_bit(STATUS_INT_ENABLED, &priv->status);
4886         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4887 }
4888
4889 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4890 {
4891         clear_bit(STATUS_INT_ENABLED, &priv->status);
4892
4893         /* disable interrupts from uCode/NIC to host */
4894         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4895
4896         /* acknowledge/clear/reset any interrupts still pending
4897          * from uCode or flow handler (Rx/Tx DMA) */
4898         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4899         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4900         IWL_DEBUG_ISR("Disabled interrupts\n");
4901 }
4902
4903 static const char *desc_lookup(int i)
4904 {
4905         switch (i) {
4906         case 1:
4907                 return "FAIL";
4908         case 2:
4909                 return "BAD_PARAM";
4910         case 3:
4911                 return "BAD_CHECKSUM";
4912         case 4:
4913                 return "NMI_INTERRUPT";
4914         case 5:
4915                 return "SYSASSERT";
4916         case 6:
4917                 return "FATAL_ERROR";
4918         }
4919
4920         return "UNKNOWN";
4921 }
4922
4923 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4924 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4925
4926 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4927 {
4928         u32 data2, line;
4929         u32 desc, time, count, base, data1;
4930         u32 blink1, blink2, ilink1, ilink2;
4931         int rc;
4932
4933         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4934
4935         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4936                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4937                 return;
4938         }
4939
4940         rc = iwl4965_grab_nic_access(priv);
4941         if (rc) {
4942                 IWL_WARNING("Can not read from adapter at this time.\n");
4943                 return;
4944         }
4945
4946         count = iwl4965_read_targ_mem(priv, base);
4947
4948         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4949                 IWL_ERROR("Start IWL Error Log Dump:\n");
4950                 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4951                           priv->status, priv->config, count);
4952         }
4953
4954         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4955         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4956         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4957         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4958         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4959         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4960         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4961         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4962         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4963
4964         IWL_ERROR("Desc               Time       "
4965                   "data1      data2      line\n");
4966         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4967                   desc_lookup(desc), desc, time, data1, data2, line);
4968         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4969         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4970                   ilink1, ilink2);
4971
4972         iwl4965_release_nic_access(priv);
4973 }
4974
4975 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4976
4977 /**
4978  * iwl4965_print_event_log - Dump error event log to syslog
4979  *
4980  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4981  */
4982 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4983                                 u32 num_events, u32 mode)
4984 {
4985         u32 i;
4986         u32 base;       /* SRAM byte address of event log header */
4987         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4988         u32 ptr;        /* SRAM byte address of log data */
4989         u32 ev, time, data; /* event log data */
4990
4991         if (num_events == 0)
4992                 return;
4993
4994         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4995
4996         if (mode == 0)
4997                 event_size = 2 * sizeof(u32);
4998         else
4999                 event_size = 3 * sizeof(u32);
5000
5001         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
5002
5003         /* "time" is actually "data" for mode 0 (no timestamp).
5004          * place event id # at far right for easier visual parsing. */
5005         for (i = 0; i < num_events; i++) {
5006                 ev = iwl4965_read_targ_mem(priv, ptr);
5007                 ptr += sizeof(u32);
5008                 time = iwl4965_read_targ_mem(priv, ptr);
5009                 ptr += sizeof(u32);
5010                 if (mode == 0)
5011                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
5012                 else {
5013                         data = iwl4965_read_targ_mem(priv, ptr);
5014                         ptr += sizeof(u32);
5015                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
5016                 }
5017         }
5018 }
5019
5020 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
5021 {
5022         int rc;
5023         u32 base;       /* SRAM byte address of event log header */
5024         u32 capacity;   /* event log capacity in # entries */
5025         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
5026         u32 num_wraps;  /* # times uCode wrapped to top of log */
5027         u32 next_entry; /* index of next entry to be written by uCode */
5028         u32 size;       /* # entries that we'll print */
5029
5030         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
5031         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
5032                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
5033                 return;
5034         }
5035
5036         rc = iwl4965_grab_nic_access(priv);
5037         if (rc) {
5038                 IWL_WARNING("Can not read from adapter at this time.\n");
5039                 return;
5040         }
5041
5042         /* event log header */
5043         capacity = iwl4965_read_targ_mem(priv, base);
5044         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
5045         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
5046         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
5047
5048         size = num_wraps ? capacity : next_entry;
5049
5050         /* bail out if nothing in log */
5051         if (size == 0) {
5052                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
5053                 iwl4965_release_nic_access(priv);
5054                 return;
5055         }
5056
5057         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
5058                   size, num_wraps);
5059
5060         /* if uCode has wrapped back to top of log, start at the oldest entry,
5061          * i.e the next one that uCode would fill. */
5062         if (num_wraps)
5063                 iwl4965_print_event_log(priv, next_entry,
5064                                     capacity - next_entry, mode);
5065
5066         /* (then/else) start at top of log */
5067         iwl4965_print_event_log(priv, 0, next_entry, mode);
5068
5069         iwl4965_release_nic_access(priv);
5070 }
5071
5072 /**
5073  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
5074  */
5075 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
5076 {
5077         /* Set the FW error flag -- cleared on iwl4965_down */
5078         set_bit(STATUS_FW_ERROR, &priv->status);
5079
5080         /* Cancel currently queued command. */
5081         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
5082
5083 #ifdef CONFIG_IWL4965_DEBUG
5084         if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
5085                 iwl4965_dump_nic_error_log(priv);
5086                 iwl4965_dump_nic_event_log(priv);
5087                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
5088         }
5089 #endif
5090
5091         wake_up_interruptible(&priv->wait_command_queue);
5092
5093         /* Keep the restart process from trying to send host
5094          * commands by clearing the INIT status bit */
5095         clear_bit(STATUS_READY, &priv->status);
5096
5097         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5098                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
5099                           "Restarting adapter due to uCode error.\n");
5100
5101                 if (iwl4965_is_associated(priv)) {
5102                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
5103                                sizeof(priv->recovery_rxon));
5104                         priv->error_recovering = 1;
5105                 }
5106                 queue_work(priv->workqueue, &priv->restart);
5107         }
5108 }
5109
5110 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
5111 {
5112         unsigned long flags;
5113
5114         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
5115                sizeof(priv->staging_rxon));
5116         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5117         iwl4965_commit_rxon(priv);
5118
5119         iwl4965_rxon_add_station(priv, priv->bssid, 1);
5120
5121         spin_lock_irqsave(&priv->lock, flags);
5122         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
5123         priv->error_recovering = 0;
5124         spin_unlock_irqrestore(&priv->lock, flags);
5125 }
5126
5127 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
5128 {
5129         u32 inta, handled = 0;
5130         u32 inta_fh;
5131         unsigned long flags;
5132 #ifdef CONFIG_IWL4965_DEBUG
5133         u32 inta_mask;
5134 #endif
5135
5136         spin_lock_irqsave(&priv->lock, flags);
5137
5138         /* Ack/clear/reset pending uCode interrupts.
5139          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
5140          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
5141         inta = iwl4965_read32(priv, CSR_INT);
5142         iwl4965_write32(priv, CSR_INT, inta);
5143
5144         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
5145          * Any new interrupts that happen after this, either while we're
5146          * in this tasklet, or later, will show up in next ISR/tasklet. */
5147         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5148         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5149
5150 #ifdef CONFIG_IWL4965_DEBUG
5151         if (iwl4965_debug_level & IWL_DL_ISR) {
5152                 /* just for debug */
5153                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5154                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5155                               inta, inta_mask, inta_fh);
5156         }
5157 #endif
5158
5159         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5160          * atomic, make sure that inta covers all the interrupts that
5161          * we've discovered, even if FH interrupt came in just after
5162          * reading CSR_INT. */
5163         if (inta_fh & CSR_FH_INT_RX_MASK)
5164                 inta |= CSR_INT_BIT_FH_RX;
5165         if (inta_fh & CSR_FH_INT_TX_MASK)
5166                 inta |= CSR_INT_BIT_FH_TX;
5167
5168         /* Now service all interrupt bits discovered above. */
5169         if (inta & CSR_INT_BIT_HW_ERR) {
5170                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
5171
5172                 /* Tell the device to stop sending interrupts */
5173                 iwl4965_disable_interrupts(priv);
5174
5175                 iwl4965_irq_handle_error(priv);
5176
5177                 handled |= CSR_INT_BIT_HW_ERR;
5178
5179                 spin_unlock_irqrestore(&priv->lock, flags);
5180
5181                 return;
5182         }
5183
5184 #ifdef CONFIG_IWL4965_DEBUG
5185         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5186                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5187                 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5188                         IWL_DEBUG_ISR("Microcode started or stopped.\n");
5189
5190                 /* Alive notification via Rx interrupt will do the real work */
5191                 if (inta & CSR_INT_BIT_ALIVE)
5192                         IWL_DEBUG_ISR("Alive interrupt\n");
5193         }
5194 #endif
5195         /* Safely ignore these bits for debug checks below */
5196         inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5197
5198         /* HW RF KILL switch toggled */
5199         if (inta & CSR_INT_BIT_RF_KILL) {
5200                 int hw_rf_kill = 0;
5201                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5202                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5203                         hw_rf_kill = 1;
5204
5205                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5206                                 "RF_KILL bit toggled to %s.\n",
5207                                 hw_rf_kill ? "disable radio":"enable radio");
5208
5209                 /* Queue restart only if RF_KILL switch was set to "kill"
5210                  *   when we loaded driver, and is now set to "enable".
5211                  * After we're Alive, RF_KILL gets handled by
5212                  *   iwl_rx_card_state_notif() */
5213                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5214                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
5215                         queue_work(priv->workqueue, &priv->restart);
5216                 }
5217
5218                 handled |= CSR_INT_BIT_RF_KILL;
5219         }
5220
5221         /* Chip got too hot and stopped itself */
5222         if (inta & CSR_INT_BIT_CT_KILL) {
5223                 IWL_ERROR("Microcode CT kill error detected.\n");
5224                 handled |= CSR_INT_BIT_CT_KILL;
5225         }
5226
5227         /* Error detected by uCode */
5228         if (inta & CSR_INT_BIT_SW_ERR) {
5229                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
5230                           inta);
5231                 iwl4965_irq_handle_error(priv);
5232                 handled |= CSR_INT_BIT_SW_ERR;
5233         }
5234
5235         /* uCode wakes up after power-down sleep */
5236         if (inta & CSR_INT_BIT_WAKEUP) {
5237                 IWL_DEBUG_ISR("Wakeup interrupt\n");
5238                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5239                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5240                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5241                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5242                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5243                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5244                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5245
5246                 handled |= CSR_INT_BIT_WAKEUP;
5247         }
5248
5249         /* All uCode command responses, including Tx command responses,
5250          * Rx "responses" (frame-received notification), and other
5251          * notifications from uCode come through here*/
5252         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5253                 iwl4965_rx_handle(priv);
5254                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5255         }
5256
5257         if (inta & CSR_INT_BIT_FH_TX) {
5258                 IWL_DEBUG_ISR("Tx interrupt\n");
5259                 handled |= CSR_INT_BIT_FH_TX;
5260         }
5261
5262         if (inta & ~handled)
5263                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5264
5265         if (inta & ~CSR_INI_SET_MASK) {
5266                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5267                          inta & ~CSR_INI_SET_MASK);
5268                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
5269         }
5270
5271         /* Re-enable all interrupts */
5272         iwl4965_enable_interrupts(priv);
5273
5274 #ifdef CONFIG_IWL4965_DEBUG
5275         if (iwl4965_debug_level & (IWL_DL_ISR)) {
5276                 inta = iwl4965_read32(priv, CSR_INT);
5277                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5278                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5279                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5280                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5281         }
5282 #endif
5283         spin_unlock_irqrestore(&priv->lock, flags);
5284 }
5285
5286 static irqreturn_t iwl4965_isr(int irq, void *data)
5287 {
5288         struct iwl4965_priv *priv = data;
5289         u32 inta, inta_mask;
5290         u32 inta_fh;
5291         if (!priv)
5292                 return IRQ_NONE;
5293
5294         spin_lock(&priv->lock);
5295
5296         /* Disable (but don't clear!) interrupts here to avoid
5297          *    back-to-back ISRs and sporadic interrupts from our NIC.
5298          * If we have something to service, the tasklet will re-enable ints.
5299          * If we *don't* have something, we'll re-enable before leaving here. */
5300         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
5301         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5302
5303         /* Discover which interrupts are active/pending */
5304         inta = iwl4965_read32(priv, CSR_INT);
5305         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5306
5307         /* Ignore interrupt if there's nothing in NIC to service.
5308          * This may be due to IRQ shared with another device,
5309          * or due to sporadic interrupts thrown from our NIC. */
5310         if (!inta && !inta_fh) {
5311                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5312                 goto none;
5313         }
5314
5315         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5316                 /* Hardware disappeared. It might have already raised
5317                  * an interrupt */
5318                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5319                 goto unplugged;
5320         }
5321
5322         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5323                       inta, inta_mask, inta_fh);
5324
5325         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5326         tasklet_schedule(&priv->irq_tasklet);
5327
5328  unplugged:
5329         spin_unlock(&priv->lock);
5330         return IRQ_HANDLED;
5331
5332  none:
5333         /* re-enable interrupts here since we don't have anything to service. */
5334         iwl4965_enable_interrupts(priv);
5335         spin_unlock(&priv->lock);
5336         return IRQ_NONE;
5337 }
5338
5339 /************************** EEPROM BANDS ****************************
5340  *
5341  * The iwl4965_eeprom_band definitions below provide the mapping from the
5342  * EEPROM contents to the specific channel number supported for each
5343  * band.
5344  *
5345  * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5346  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5347  * The specific geography and calibration information for that channel
5348  * is contained in the eeprom map itself.
5349  *
5350  * During init, we copy the eeprom information and channel map
5351  * information into priv->channel_info_24/52 and priv->channel_map_24/52
5352  *
5353  * channel_map_24/52 provides the index in the channel_info array for a
5354  * given channel.  We have to have two separate maps as there is channel
5355  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5356  * band_2
5357  *
5358  * A value of 0xff stored in the channel_map indicates that the channel
5359  * is not supported by the hardware at all.
5360  *
5361  * A value of 0xfe in the channel_map indicates that the channel is not
5362  * valid for Tx with the current hardware.  This means that
5363  * while the system can tune and receive on a given channel, it may not
5364  * be able to associate or transmit any frames on that
5365  * channel.  There is no corresponding channel information for that
5366  * entry.
5367  *
5368  *********************************************************************/
5369
5370 /* 2.4 GHz */
5371 static const u8 iwl4965_eeprom_band_1[14] = {
5372         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5373 };
5374
5375 /* 5.2 GHz bands */
5376 static const u8 iwl4965_eeprom_band_2[] = {     /* 4915-5080MHz */
5377         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5378 };
5379
5380 static const u8 iwl4965_eeprom_band_3[] = {     /* 5170-5320MHz */
5381         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5382 };
5383
5384 static const u8 iwl4965_eeprom_band_4[] = {     /* 5500-5700MHz */
5385         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5386 };
5387
5388 static const u8 iwl4965_eeprom_band_5[] = {     /* 5725-5825MHz */
5389         145, 149, 153, 157, 161, 165
5390 };
5391
5392 static u8 iwl4965_eeprom_band_6[] = {       /* 2.4 FAT channel */
5393         1, 2, 3, 4, 5, 6, 7
5394 };
5395
5396 static u8 iwl4965_eeprom_band_7[] = {       /* 5.2 FAT channel */
5397         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5398 };
5399
5400 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5401                                     int band,
5402                                     int *eeprom_ch_count,
5403                                     const struct iwl4965_eeprom_channel
5404                                     **eeprom_ch_info,
5405                                     const u8 **eeprom_ch_index)
5406 {
5407         switch (band) {
5408         case 1:         /* 2.4GHz band */
5409                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5410                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5411                 *eeprom_ch_index = iwl4965_eeprom_band_1;
5412                 break;
5413         case 2:         /* 4.9GHz band */
5414                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5415                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5416                 *eeprom_ch_index = iwl4965_eeprom_band_2;
5417                 break;
5418         case 3:         /* 5.2GHz band */
5419                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5420                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5421                 *eeprom_ch_index = iwl4965_eeprom_band_3;
5422                 break;
5423         case 4:         /* 5.5GHz band */
5424                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5425                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5426                 *eeprom_ch_index = iwl4965_eeprom_band_4;
5427                 break;
5428         case 5:         /* 5.7GHz band */
5429                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5430                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5431                 *eeprom_ch_index = iwl4965_eeprom_band_5;
5432                 break;
5433         case 6:         /* 2.4GHz FAT channels */
5434                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5435                 *eeprom_ch_info = priv->eeprom.band_24_channels;
5436                 *eeprom_ch_index = iwl4965_eeprom_band_6;
5437                 break;
5438         case 7:         /* 5 GHz FAT channels */
5439                 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5440                 *eeprom_ch_info = priv->eeprom.band_52_channels;
5441                 *eeprom_ch_index = iwl4965_eeprom_band_7;
5442                 break;
5443         default:
5444                 BUG();
5445                 return;
5446         }
5447 }
5448
5449 /**
5450  * iwl4965_get_channel_info - Find driver's private channel info
5451  *
5452  * Based on band and channel number.
5453  */
5454 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5455                                                     int phymode, u16 channel)
5456 {
5457         int i;
5458
5459         switch (phymode) {
5460         case MODE_IEEE80211A:
5461                 for (i = 14; i < priv->channel_count; i++) {
5462                         if (priv->channel_info[i].channel == channel)
5463                                 return &priv->channel_info[i];
5464                 }
5465                 break;
5466
5467         case MODE_IEEE80211B:
5468         case MODE_IEEE80211G:
5469                 if (channel >= 1 && channel <= 14)
5470                         return &priv->channel_info[channel - 1];
5471                 break;
5472
5473         }
5474
5475         return NULL;
5476 }
5477
5478 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5479                             ? # x " " : "")
5480
5481 /**
5482  * iwl4965_init_channel_map - Set up driver's info for all possible channels
5483  */
5484 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5485 {
5486         int eeprom_ch_count = 0;
5487         const u8 *eeprom_ch_index = NULL;
5488         const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5489         int band, ch;
5490         struct iwl4965_channel_info *ch_info;
5491
5492         if (priv->channel_count) {
5493                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5494                 return 0;
5495         }
5496
5497         if (priv->eeprom.version < 0x2f) {
5498                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5499                             priv->eeprom.version);
5500                 return -EINVAL;
5501         }
5502
5503         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5504
5505         priv->channel_count =
5506             ARRAY_SIZE(iwl4965_eeprom_band_1) +
5507             ARRAY_SIZE(iwl4965_eeprom_band_2) +
5508             ARRAY_SIZE(iwl4965_eeprom_band_3) +
5509             ARRAY_SIZE(iwl4965_eeprom_band_4) +
5510             ARRAY_SIZE(iwl4965_eeprom_band_5);
5511
5512         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5513
5514         priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5515                                      priv->channel_count, GFP_KERNEL);
5516         if (!priv->channel_info) {
5517                 IWL_ERROR("Could not allocate channel_info\n");
5518                 priv->channel_count = 0;
5519                 return -ENOMEM;
5520         }
5521
5522         ch_info = priv->channel_info;
5523
5524         /* Loop through the 5 EEPROM bands adding them in order to the
5525          * channel map we maintain (that contains additional information than
5526          * what just in the EEPROM) */
5527         for (band = 1; band <= 5; band++) {
5528
5529                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5530                                         &eeprom_ch_info, &eeprom_ch_index);
5531
5532                 /* Loop through each band adding each of the channels */
5533                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5534                         ch_info->channel = eeprom_ch_index[ch];
5535                         ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5536                             MODE_IEEE80211A;
5537
5538                         /* permanently store EEPROM's channel regulatory flags
5539                          *   and max power in channel info database. */
5540                         ch_info->eeprom = eeprom_ch_info[ch];
5541
5542                         /* Copy the run-time flags so they are there even on
5543                          * invalid channels */
5544                         ch_info->flags = eeprom_ch_info[ch].flags;
5545
5546                         if (!(is_channel_valid(ch_info))) {
5547                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5548                                                "No traffic\n",
5549                                                ch_info->channel,
5550                                                ch_info->flags,
5551                                                is_channel_a_band(ch_info) ?
5552                                                "5.2" : "2.4");
5553                                 ch_info++;
5554                                 continue;
5555                         }
5556
5557                         /* Initialize regulatory-based run-time data */
5558                         ch_info->max_power_avg = ch_info->curr_txpow =
5559                             eeprom_ch_info[ch].max_power_avg;
5560                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5561                         ch_info->min_power = 0;
5562
5563                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5564                                        " %ddBm): Ad-Hoc %ssupported\n",
5565                                        ch_info->channel,
5566                                        is_channel_a_band(ch_info) ?
5567                                        "5.2" : "2.4",
5568                                        CHECK_AND_PRINT(IBSS),
5569                                        CHECK_AND_PRINT(ACTIVE),
5570                                        CHECK_AND_PRINT(RADAR),
5571                                        CHECK_AND_PRINT(WIDE),
5572                                        CHECK_AND_PRINT(NARROW),
5573                                        CHECK_AND_PRINT(DFS),
5574                                        eeprom_ch_info[ch].flags,
5575                                        eeprom_ch_info[ch].max_power_avg,
5576                                        ((eeprom_ch_info[ch].
5577                                          flags & EEPROM_CHANNEL_IBSS)
5578                                         && !(eeprom_ch_info[ch].
5579                                              flags & EEPROM_CHANNEL_RADAR))
5580                                        ? "" : "not ");
5581
5582                         /* Set the user_txpower_limit to the highest power
5583                          * supported by any channel */
5584                         if (eeprom_ch_info[ch].max_power_avg >
5585                             priv->user_txpower_limit)
5586                                 priv->user_txpower_limit =
5587                                     eeprom_ch_info[ch].max_power_avg;
5588
5589                         ch_info++;
5590                 }
5591         }
5592
5593         /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5594         for (band = 6; band <= 7; band++) {
5595                 int phymode;
5596                 u8 fat_extension_chan;
5597
5598                 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5599                                         &eeprom_ch_info, &eeprom_ch_index);
5600
5601                 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5602                 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5603
5604                 /* Loop through each band adding each of the channels */
5605                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5606
5607                         if ((band == 6) &&
5608                             ((eeprom_ch_index[ch] == 5) ||
5609                             (eeprom_ch_index[ch] == 6) ||
5610                             (eeprom_ch_index[ch] == 7)))
5611                                fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5612                         else
5613                                 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5614
5615                         /* Set up driver's info for lower half */
5616                         iwl4965_set_fat_chan_info(priv, phymode,
5617                                                   eeprom_ch_index[ch],
5618                                                   &(eeprom_ch_info[ch]),
5619                                                   fat_extension_chan);
5620
5621                         /* Set up driver's info for upper half */
5622                         iwl4965_set_fat_chan_info(priv, phymode,
5623                                                   (eeprom_ch_index[ch] + 4),
5624                                                   &(eeprom_ch_info[ch]),
5625                                                   HT_IE_EXT_CHANNEL_BELOW);
5626                 }
5627         }
5628
5629         return 0;
5630 }
5631
5632 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5633  * sending probe req.  This should be set long enough to hear probe responses
5634  * from more than one AP.  */
5635 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5636 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5637
5638 /* For faster active scanning, scan will move to the next channel if fewer than
5639  * PLCP_QUIET_THRESH packets are heard on this channel within
5640  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5641  * time if it's a quiet channel (nothing responded to our probe, and there's
5642  * no other traffic).
5643  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5644 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5645 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5646
5647 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5648  * Must be set longer than active dwell time.
5649  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5650 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5651 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5652 #define IWL_PASSIVE_DWELL_BASE      (100)
5653 #define IWL_CHANNEL_TUNE_TIME       5
5654
5655 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv, int phymode)
5656 {
5657         if (phymode == MODE_IEEE80211A)
5658                 return IWL_ACTIVE_DWELL_TIME_52;
5659         else
5660                 return IWL_ACTIVE_DWELL_TIME_24;
5661 }
5662
5663 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv, int phymode)
5664 {
5665         u16 active = iwl4965_get_active_dwell_time(priv, phymode);
5666         u16 passive = (phymode != MODE_IEEE80211A) ?
5667             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5668             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5669
5670         if (iwl4965_is_associated(priv)) {
5671                 /* If we're associated, we clamp the maximum passive
5672                  * dwell time to be 98% of the beacon interval (minus
5673                  * 2 * channel tune time) */
5674                 passive = priv->beacon_int;
5675                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5676                         passive = IWL_PASSIVE_DWELL_BASE;
5677                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5678         }
5679
5680         if (passive <= active)
5681                 passive = active + 1;
5682
5683         return passive;
5684 }
5685
5686 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv, int phymode,
5687                                      u8 is_active, u8 direct_mask,
5688                                      struct iwl4965_scan_channel *scan_ch)
5689 {
5690         const struct ieee80211_channel *channels = NULL;
5691         const struct ieee80211_hw_mode *hw_mode;
5692         const struct iwl4965_channel_info *ch_info;
5693         u16 passive_dwell = 0;
5694         u16 active_dwell = 0;
5695         int added, i;
5696
5697         hw_mode = iwl4965_get_hw_mode(priv, phymode);
5698         if (!hw_mode)
5699                 return 0;
5700
5701         channels = hw_mode->channels;
5702
5703         active_dwell = iwl4965_get_active_dwell_time(priv, phymode);
5704         passive_dwell = iwl4965_get_passive_dwell_time(priv, phymode);
5705
5706         for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5707                 if (channels[i].chan ==
5708                     le16_to_cpu(priv->active_rxon.channel)) {
5709                         if (iwl4965_is_associated(priv)) {
5710                                 IWL_DEBUG_SCAN
5711                                     ("Skipping current channel %d\n",
5712                                      le16_to_cpu(priv->active_rxon.channel));
5713                                 continue;
5714                         }
5715                 } else if (priv->only_active_channel)
5716                         continue;
5717
5718                 scan_ch->channel = channels[i].chan;
5719
5720                 ch_info = iwl4965_get_channel_info(priv, phymode,
5721                                          scan_ch->channel);
5722                 if (!is_channel_valid(ch_info)) {
5723                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5724                                        scan_ch->channel);
5725                         continue;
5726                 }
5727
5728                 if (!is_active || is_channel_passive(ch_info) ||
5729                     !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5730                         scan_ch->type = 0;      /* passive */
5731                 else
5732                         scan_ch->type = 1;      /* active */
5733
5734                 if (scan_ch->type & 1)
5735                         scan_ch->type |= (direct_mask << 1);
5736
5737                 if (is_channel_narrow(ch_info))
5738                         scan_ch->type |= (1 << 7);
5739
5740                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5741                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5742
5743                 /* Set txpower levels to defaults */
5744                 scan_ch->tpc.dsp_atten = 110;
5745                 /* scan_pwr_info->tpc.dsp_atten; */
5746
5747                 /*scan_pwr_info->tpc.tx_gain; */
5748                 if (phymode == MODE_IEEE80211A)
5749                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5750                 else {
5751                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5752                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5753                          * power level:
5754                          * scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5755                          */
5756                 }
5757
5758                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5759                                scan_ch->channel,
5760                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5761                                (scan_ch->type & 1) ?
5762                                active_dwell : passive_dwell);
5763
5764                 scan_ch++;
5765                 added++;
5766         }
5767
5768         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5769         return added;
5770 }
5771
5772 static void iwl4965_reset_channel_flag(struct iwl4965_priv *priv)
5773 {
5774         int i, j;
5775         for (i = 0; i < 3; i++) {
5776                 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5777                 for (j = 0; j < hw_mode->num_channels; j++)
5778                         hw_mode->channels[j].flag = hw_mode->channels[j].val;
5779         }
5780 }
5781
5782 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5783                               struct ieee80211_rate *rates)
5784 {
5785         int i;
5786
5787         for (i = 0; i < IWL_RATE_COUNT; i++) {
5788                 rates[i].rate = iwl4965_rates[i].ieee * 5;
5789                 rates[i].val = i; /* Rate scaling will work on indexes */
5790                 rates[i].val2 = i;
5791                 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5792                 /* Only OFDM have the bits-per-symbol set */
5793                 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5794                         rates[i].flags |= IEEE80211_RATE_OFDM;
5795                 else {
5796                         /*
5797                          * If CCK 1M then set rate flag to CCK else CCK_2
5798                          * which is CCK | PREAMBLE2
5799                          */
5800                         rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5801                                 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5802                 }
5803
5804                 /* Set up which ones are basic rates... */
5805                 if (IWL_BASIC_RATES_MASK & (1 << i))
5806                         rates[i].flags |= IEEE80211_RATE_BASIC;
5807         }
5808 }
5809
5810 /**
5811  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5812  */
5813 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5814 {
5815         struct iwl4965_channel_info *ch;
5816         struct ieee80211_hw_mode *modes;
5817         struct ieee80211_channel *channels;
5818         struct ieee80211_channel *geo_ch;
5819         struct ieee80211_rate *rates;
5820         int i = 0;
5821         enum {
5822                 A = 0,
5823                 B = 1,
5824                 G = 2,
5825                 A_11N = 3,
5826                 G_11N = 4,
5827         };
5828         int mode_count = 5;
5829
5830         if (priv->modes) {
5831                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5832                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5833                 return 0;
5834         }
5835
5836         modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5837                         GFP_KERNEL);
5838         if (!modes)
5839                 return -ENOMEM;
5840
5841         channels = kzalloc(sizeof(struct ieee80211_channel) *
5842                            priv->channel_count, GFP_KERNEL);
5843         if (!channels) {
5844                 kfree(modes);
5845                 return -ENOMEM;
5846         }
5847
5848         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5849                         GFP_KERNEL);
5850         if (!rates) {
5851                 kfree(modes);
5852                 kfree(channels);
5853                 return -ENOMEM;
5854         }
5855
5856         /* 0 = 802.11a
5857          * 1 = 802.11b
5858          * 2 = 802.11g
5859          */
5860
5861         /* 5.2GHz channels start after the 2.4GHz channels */
5862         modes[A].mode = MODE_IEEE80211A;
5863         modes[A].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5864         modes[A].rates = rates;
5865         modes[A].num_rates = 8; /* just OFDM */
5866         modes[A].rates = &rates[4];
5867         modes[A].num_channels = 0;
5868
5869         modes[B].mode = MODE_IEEE80211B;
5870         modes[B].channels = channels;
5871         modes[B].rates = rates;
5872         modes[B].num_rates = 4; /* just CCK */
5873         modes[B].num_channels = 0;
5874
5875         modes[G].mode = MODE_IEEE80211G;
5876         modes[G].channels = channels;
5877         modes[G].rates = rates;
5878         modes[G].num_rates = 12;        /* OFDM & CCK */
5879         modes[G].num_channels = 0;
5880
5881         modes[G_11N].mode = MODE_IEEE80211G;
5882         modes[G_11N].channels = channels;
5883         modes[G_11N].num_rates = 13;        /* OFDM & CCK */
5884         modes[G_11N].rates = rates;
5885         modes[G_11N].num_channels = 0;
5886
5887         modes[A_11N].mode = MODE_IEEE80211A;
5888         modes[A_11N].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5889         modes[A_11N].rates = &rates[4];
5890         modes[A_11N].num_rates = 9; /* just OFDM */
5891         modes[A_11N].num_channels = 0;
5892
5893         priv->ieee_channels = channels;
5894         priv->ieee_rates = rates;
5895
5896         iwl4965_init_hw_rates(priv, rates);
5897
5898         for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5899                 ch = &priv->channel_info[i];
5900
5901                 if (!is_channel_valid(ch)) {
5902                         IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5903                                     "skipping.\n",
5904                                     ch->channel, is_channel_a_band(ch) ?
5905                                     "5.2" : "2.4");
5906                         continue;
5907                 }
5908
5909                 if (is_channel_a_band(ch)) {
5910                         geo_ch = &modes[A].channels[modes[A].num_channels++];
5911                         modes[A_11N].num_channels++;
5912                 } else {
5913                         geo_ch = &modes[B].channels[modes[B].num_channels++];
5914                         modes[G].num_channels++;
5915                         modes[G_11N].num_channels++;
5916                 }
5917
5918                 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5919                 geo_ch->chan = ch->channel;
5920                 geo_ch->power_level = ch->max_power_avg;
5921                 geo_ch->antenna_max = 0xff;
5922
5923                 if (is_channel_valid(ch)) {
5924                         geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5925                         if (ch->flags & EEPROM_CHANNEL_IBSS)
5926                                 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5927
5928                         if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5929                                 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5930
5931                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5932                                 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5933
5934                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5935                                 priv->max_channel_txpower_limit =
5936                                     ch->max_power_avg;
5937                 }
5938
5939                 geo_ch->val = geo_ch->flag;
5940         }
5941
5942         if ((modes[A].num_channels == 0) && priv->is_abg) {
5943                 printk(KERN_INFO DRV_NAME
5944                        ": Incorrectly detected BG card as ABG.  Please send "
5945                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5946                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5947                 priv->is_abg = 0;
5948         }
5949
5950         printk(KERN_INFO DRV_NAME
5951                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5952                modes[G].num_channels, modes[A].num_channels);
5953
5954         /*
5955          * NOTE:  We register these in preference of order -- the
5956          * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5957          * a phymode based on rates or AP capabilities but seems to
5958          * configure it purely on if the channel being configured
5959          * is supported by a mode -- and the first match is taken
5960          */
5961
5962         if (modes[G].num_channels)
5963                 ieee80211_register_hwmode(priv->hw, &modes[G]);
5964         if (modes[B].num_channels)
5965                 ieee80211_register_hwmode(priv->hw, &modes[B]);
5966         if (modes[A].num_channels)
5967                 ieee80211_register_hwmode(priv->hw, &modes[A]);
5968
5969         priv->modes = modes;
5970         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5971
5972         return 0;
5973 }
5974
5975 /******************************************************************************
5976  *
5977  * uCode download functions
5978  *
5979  ******************************************************************************/
5980
5981 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5982 {
5983         if (priv->ucode_code.v_addr != NULL) {
5984                 pci_free_consistent(priv->pci_dev,
5985                                     priv->ucode_code.len,
5986                                     priv->ucode_code.v_addr,
5987                                     priv->ucode_code.p_addr);
5988                 priv->ucode_code.v_addr = NULL;
5989         }
5990         if (priv->ucode_data.v_addr != NULL) {
5991                 pci_free_consistent(priv->pci_dev,
5992                                     priv->ucode_data.len,
5993                                     priv->ucode_data.v_addr,
5994                                     priv->ucode_data.p_addr);
5995                 priv->ucode_data.v_addr = NULL;
5996         }
5997         if (priv->ucode_data_backup.v_addr != NULL) {
5998                 pci_free_consistent(priv->pci_dev,
5999                                     priv->ucode_data_backup.len,
6000                                     priv->ucode_data_backup.v_addr,
6001                                     priv->ucode_data_backup.p_addr);
6002                 priv->ucode_data_backup.v_addr = NULL;
6003         }
6004         if (priv->ucode_init.v_addr != NULL) {
6005                 pci_free_consistent(priv->pci_dev,
6006                                     priv->ucode_init.len,
6007                                     priv->ucode_init.v_addr,
6008                                     priv->ucode_init.p_addr);
6009                 priv->ucode_init.v_addr = NULL;
6010         }
6011         if (priv->ucode_init_data.v_addr != NULL) {
6012                 pci_free_consistent(priv->pci_dev,
6013                                     priv->ucode_init_data.len,
6014                                     priv->ucode_init_data.v_addr,
6015                                     priv->ucode_init_data.p_addr);
6016                 priv->ucode_init_data.v_addr = NULL;
6017         }
6018         if (priv->ucode_boot.v_addr != NULL) {
6019                 pci_free_consistent(priv->pci_dev,
6020                                     priv->ucode_boot.len,
6021                                     priv->ucode_boot.v_addr,
6022                                     priv->ucode_boot.p_addr);
6023                 priv->ucode_boot.v_addr = NULL;
6024         }
6025 }
6026
6027 /**
6028  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
6029  *     looking at all data.
6030  */
6031 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 * image,
6032                                  u32 len)
6033 {
6034         u32 val;
6035         u32 save_len = len;
6036         int rc = 0;
6037         u32 errcnt;
6038
6039         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6040
6041         rc = iwl4965_grab_nic_access(priv);
6042         if (rc)
6043                 return rc;
6044
6045         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
6046
6047         errcnt = 0;
6048         for (; len > 0; len -= sizeof(u32), image++) {
6049                 /* read data comes through single port, auto-incr addr */
6050                 /* NOTE: Use the debugless read so we don't flood kernel log
6051                  * if IWL_DL_IO is set */
6052                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6053                 if (val != le32_to_cpu(*image)) {
6054                         IWL_ERROR("uCode INST section is invalid at "
6055                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
6056                                   save_len - len, val, le32_to_cpu(*image));
6057                         rc = -EIO;
6058                         errcnt++;
6059                         if (errcnt >= 20)
6060                                 break;
6061                 }
6062         }
6063
6064         iwl4965_release_nic_access(priv);
6065
6066         if (!errcnt)
6067                 IWL_DEBUG_INFO
6068                     ("ucode image in INSTRUCTION memory is good\n");
6069
6070         return rc;
6071 }
6072
6073
6074 /**
6075  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
6076  *   using sample data 100 bytes apart.  If these sample points are good,
6077  *   it's a pretty good bet that everything between them is good, too.
6078  */
6079 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
6080 {
6081         u32 val;
6082         int rc = 0;
6083         u32 errcnt = 0;
6084         u32 i;
6085
6086         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6087
6088         rc = iwl4965_grab_nic_access(priv);
6089         if (rc)
6090                 return rc;
6091
6092         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
6093                 /* read data comes through single port, auto-incr addr */
6094                 /* NOTE: Use the debugless read so we don't flood kernel log
6095                  * if IWL_DL_IO is set */
6096                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
6097                         i + RTC_INST_LOWER_BOUND);
6098                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6099                 if (val != le32_to_cpu(*image)) {
6100 #if 0 /* Enable this if you want to see details */
6101                         IWL_ERROR("uCode INST section is invalid at "
6102                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
6103                                   i, val, *image);
6104 #endif
6105                         rc = -EIO;
6106                         errcnt++;
6107                         if (errcnt >= 3)
6108                                 break;
6109                 }
6110         }
6111
6112         iwl4965_release_nic_access(priv);
6113
6114         return rc;
6115 }
6116
6117
6118 /**
6119  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
6120  *    and verify its contents
6121  */
6122 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
6123 {
6124         __le32 *image;
6125         u32 len;
6126         int rc = 0;
6127
6128         /* Try bootstrap */
6129         image = (__le32 *)priv->ucode_boot.v_addr;
6130         len = priv->ucode_boot.len;
6131         rc = iwl4965_verify_inst_sparse(priv, image, len);
6132         if (rc == 0) {
6133                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
6134                 return 0;
6135         }
6136
6137         /* Try initialize */
6138         image = (__le32 *)priv->ucode_init.v_addr;
6139         len = priv->ucode_init.len;
6140         rc = iwl4965_verify_inst_sparse(priv, image, len);
6141         if (rc == 0) {
6142                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
6143                 return 0;
6144         }
6145
6146         /* Try runtime/protocol */
6147         image = (__le32 *)priv->ucode_code.v_addr;
6148         len = priv->ucode_code.len;
6149         rc = iwl4965_verify_inst_sparse(priv, image, len);
6150         if (rc == 0) {
6151                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
6152                 return 0;
6153         }
6154
6155         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
6156
6157         /* Since nothing seems to match, show first several data entries in
6158          * instruction SRAM, so maybe visual inspection will give a clue.
6159          * Selection of bootstrap image (vs. other images) is arbitrary. */
6160         image = (__le32 *)priv->ucode_boot.v_addr;
6161         len = priv->ucode_boot.len;
6162         rc = iwl4965_verify_inst_full(priv, image, len);
6163
6164         return rc;
6165 }
6166
6167
6168 /* check contents of special bootstrap uCode SRAM */
6169 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
6170 {
6171         __le32 *image = priv->ucode_boot.v_addr;
6172         u32 len = priv->ucode_boot.len;
6173         u32 reg;
6174         u32 val;
6175
6176         IWL_DEBUG_INFO("Begin verify bsm\n");
6177
6178         /* verify BSM SRAM contents */
6179         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6180         for (reg = BSM_SRAM_LOWER_BOUND;
6181              reg < BSM_SRAM_LOWER_BOUND + len;
6182              reg += sizeof(u32), image ++) {
6183                 val = iwl4965_read_prph(priv, reg);
6184                 if (val != le32_to_cpu(*image)) {
6185                         IWL_ERROR("BSM uCode verification failed at "
6186                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6187                                   BSM_SRAM_LOWER_BOUND,
6188                                   reg - BSM_SRAM_LOWER_BOUND, len,
6189                                   val, le32_to_cpu(*image));
6190                         return -EIO;
6191                 }
6192         }
6193
6194         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6195
6196         return 0;
6197 }
6198
6199 /**
6200  * iwl4965_load_bsm - Load bootstrap instructions
6201  *
6202  * BSM operation:
6203  *
6204  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6205  * in special SRAM that does not power down during RFKILL.  When powering back
6206  * up after power-saving sleeps (or during initial uCode load), the BSM loads
6207  * the bootstrap program into the on-board processor, and starts it.
6208  *
6209  * The bootstrap program loads (via DMA) instructions and data for a new
6210  * program from host DRAM locations indicated by the host driver in the
6211  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
6212  * automatically.
6213  *
6214  * When initializing the NIC, the host driver points the BSM to the
6215  * "initialize" uCode image.  This uCode sets up some internal data, then
6216  * notifies host via "initialize alive" that it is complete.
6217  *
6218  * The host then replaces the BSM_DRAM_* pointer values to point to the
6219  * normal runtime uCode instructions and a backup uCode data cache buffer
6220  * (filled initially with starting data values for the on-board processor),
6221  * then triggers the "initialize" uCode to load and launch the runtime uCode,
6222  * which begins normal operation.
6223  *
6224  * When doing a power-save shutdown, runtime uCode saves data SRAM into
6225  * the backup data cache in DRAM before SRAM is powered down.
6226  *
6227  * When powering back up, the BSM loads the bootstrap program.  This reloads
6228  * the runtime uCode instructions and the backup data cache into SRAM,
6229  * and re-launches the runtime uCode from where it left off.
6230  */
6231 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6232 {
6233         __le32 *image = priv->ucode_boot.v_addr;
6234         u32 len = priv->ucode_boot.len;
6235         dma_addr_t pinst;
6236         dma_addr_t pdata;
6237         u32 inst_len;
6238         u32 data_len;
6239         int rc;
6240         int i;
6241         u32 done;
6242         u32 reg_offset;
6243
6244         IWL_DEBUG_INFO("Begin load bsm\n");
6245
6246         /* make sure bootstrap program is no larger than BSM's SRAM size */
6247         if (len > IWL_MAX_BSM_SIZE)
6248                 return -EINVAL;
6249
6250         /* Tell bootstrap uCode where to find the "Initialize" uCode
6251          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
6252          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
6253          *        after the "initialize" uCode has run, to point to
6254          *        runtime/protocol instructions and backup data cache. */
6255         pinst = priv->ucode_init.p_addr >> 4;
6256         pdata = priv->ucode_init_data.p_addr >> 4;
6257         inst_len = priv->ucode_init.len;
6258         data_len = priv->ucode_init_data.len;
6259
6260         rc = iwl4965_grab_nic_access(priv);
6261         if (rc)
6262                 return rc;
6263
6264         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6265         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6266         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6267         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6268
6269         /* Fill BSM memory with bootstrap instructions */
6270         for (reg_offset = BSM_SRAM_LOWER_BOUND;
6271              reg_offset < BSM_SRAM_LOWER_BOUND + len;
6272              reg_offset += sizeof(u32), image++)
6273                 _iwl4965_write_prph(priv, reg_offset,
6274                                           le32_to_cpu(*image));
6275
6276         rc = iwl4965_verify_bsm(priv);
6277         if (rc) {
6278                 iwl4965_release_nic_access(priv);
6279                 return rc;
6280         }
6281
6282         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6283         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6284         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6285                                  RTC_INST_LOWER_BOUND);
6286         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6287
6288         /* Load bootstrap code into instruction SRAM now,
6289          *   to prepare to load "initialize" uCode */
6290         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6291                 BSM_WR_CTRL_REG_BIT_START);
6292
6293         /* Wait for load of bootstrap uCode to finish */
6294         for (i = 0; i < 100; i++) {
6295                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6296                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6297                         break;
6298                 udelay(10);
6299         }
6300         if (i < 100)
6301                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6302         else {
6303                 IWL_ERROR("BSM write did not complete!\n");
6304                 return -EIO;
6305         }
6306
6307         /* Enable future boot loads whenever power management unit triggers it
6308          *   (e.g. when powering back up after power-save shutdown) */
6309         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6310                 BSM_WR_CTRL_REG_BIT_START_EN);
6311
6312         iwl4965_release_nic_access(priv);
6313
6314         return 0;
6315 }
6316
6317 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6318 {
6319         /* Remove all resets to allow NIC to operate */
6320         iwl4965_write32(priv, CSR_RESET, 0);
6321 }
6322
6323 static int iwl4965_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
6324 {
6325         desc->v_addr = pci_alloc_consistent(pci_dev, desc->len, &desc->p_addr);
6326         return (desc->v_addr != NULL) ? 0 : -ENOMEM;
6327 }
6328
6329 /**
6330  * iwl4965_read_ucode - Read uCode images from disk file.
6331  *
6332  * Copy into buffers for card to fetch via bus-mastering
6333  */
6334 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6335 {
6336         struct iwl4965_ucode *ucode;
6337         int ret;
6338         const struct firmware *ucode_raw;
6339         const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6340         u8 *src;
6341         size_t len;
6342         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6343
6344         /* Ask kernel firmware_class module to get the boot firmware off disk.
6345          * request_firmware() is synchronous, file is in memory on return. */
6346         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6347         if (ret < 0) {
6348                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6349                                         name, ret);
6350                 goto error;
6351         }
6352
6353         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6354                        name, ucode_raw->size);
6355
6356         /* Make sure that we got at least our header! */
6357         if (ucode_raw->size < sizeof(*ucode)) {
6358                 IWL_ERROR("File size way too small!\n");
6359                 ret = -EINVAL;
6360                 goto err_release;
6361         }
6362
6363         /* Data from ucode file:  header followed by uCode images */
6364         ucode = (void *)ucode_raw->data;
6365
6366         ver = le32_to_cpu(ucode->ver);
6367         inst_size = le32_to_cpu(ucode->inst_size);
6368         data_size = le32_to_cpu(ucode->data_size);
6369         init_size = le32_to_cpu(ucode->init_size);
6370         init_data_size = le32_to_cpu(ucode->init_data_size);
6371         boot_size = le32_to_cpu(ucode->boot_size);
6372
6373         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6374         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6375                        inst_size);
6376         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6377                        data_size);
6378         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6379                        init_size);
6380         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6381                        init_data_size);
6382         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6383                        boot_size);
6384
6385         /* Verify size of file vs. image size info in file's header */
6386         if (ucode_raw->size < sizeof(*ucode) +
6387                 inst_size + data_size + init_size +
6388                 init_data_size + boot_size) {
6389
6390                 IWL_DEBUG_INFO("uCode file size %d too small\n",
6391                                (int)ucode_raw->size);
6392                 ret = -EINVAL;
6393                 goto err_release;
6394         }
6395
6396         /* Verify that uCode images will fit in card's SRAM */
6397         if (inst_size > IWL_MAX_INST_SIZE) {
6398                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6399                                inst_size);
6400                 ret = -EINVAL;
6401                 goto err_release;
6402         }
6403
6404         if (data_size > IWL_MAX_DATA_SIZE) {
6405                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6406                                 data_size);
6407                 ret = -EINVAL;
6408                 goto err_release;
6409         }
6410         if (init_size > IWL_MAX_INST_SIZE) {
6411                 IWL_DEBUG_INFO
6412                     ("uCode init instr len %d too large to fit in\n",
6413                       init_size);
6414                 ret = -EINVAL;
6415                 goto err_release;
6416         }
6417         if (init_data_size > IWL_MAX_DATA_SIZE) {
6418                 IWL_DEBUG_INFO
6419                     ("uCode init data len %d too large to fit in\n",
6420                       init_data_size);
6421                 ret = -EINVAL;
6422                 goto err_release;
6423         }
6424         if (boot_size > IWL_MAX_BSM_SIZE) {
6425                 IWL_DEBUG_INFO
6426                     ("uCode boot instr len %d too large to fit in\n",
6427                       boot_size);
6428                 ret = -EINVAL;
6429                 goto err_release;
6430         }
6431
6432         /* Allocate ucode buffers for card's bus-master loading ... */
6433
6434         /* Runtime instructions and 2 copies of data:
6435          * 1) unmodified from disk
6436          * 2) backup cache for save/restore during power-downs */
6437         priv->ucode_code.len = inst_size;
6438         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6439
6440         priv->ucode_data.len = data_size;
6441         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6442
6443         priv->ucode_data_backup.len = data_size;
6444         iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6445
6446         /* Initialization instructions and data */
6447         if (init_size && init_data_size) {
6448                 priv->ucode_init.len = init_size;
6449                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6450
6451                 priv->ucode_init_data.len = init_data_size;
6452                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6453
6454                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6455                         goto err_pci_alloc;
6456         }
6457
6458         /* Bootstrap (instructions only, no data) */
6459         if (boot_size) {
6460                 priv->ucode_boot.len = boot_size;
6461                 iwl4965_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6462
6463                 if (!priv->ucode_boot.v_addr)
6464                         goto err_pci_alloc;
6465         }
6466
6467         /* Copy images into buffers for card's bus-master reads ... */
6468
6469         /* Runtime instructions (first block of data in file) */
6470         src = &ucode->data[0];
6471         len = priv->ucode_code.len;
6472         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6473         memcpy(priv->ucode_code.v_addr, src, len);
6474         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6475                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6476
6477         /* Runtime data (2nd block)
6478          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
6479         src = &ucode->data[inst_size];
6480         len = priv->ucode_data.len;
6481         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6482         memcpy(priv->ucode_data.v_addr, src, len);
6483         memcpy(priv->ucode_data_backup.v_addr, src, len);
6484
6485         /* Initialization instructions (3rd block) */
6486         if (init_size) {
6487                 src = &ucode->data[inst_size + data_size];
6488                 len = priv->ucode_init.len;
6489                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6490                                 len);
6491                 memcpy(priv->ucode_init.v_addr, src, len);
6492         }
6493
6494         /* Initialization data (4th block) */
6495         if (init_data_size) {
6496                 src = &ucode->data[inst_size + data_size + init_size];
6497                 len = priv->ucode_init_data.len;
6498                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6499                                len);
6500                 memcpy(priv->ucode_init_data.v_addr, src, len);
6501         }
6502
6503         /* Bootstrap instructions (5th block) */
6504         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6505         len = priv->ucode_boot.len;
6506         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6507         memcpy(priv->ucode_boot.v_addr, src, len);
6508
6509         /* We have our copies now, allow OS release its copies */
6510         release_firmware(ucode_raw);
6511         return 0;
6512
6513  err_pci_alloc:
6514         IWL_ERROR("failed to allocate pci memory\n");
6515         ret = -ENOMEM;
6516         iwl4965_dealloc_ucode_pci(priv);
6517
6518  err_release:
6519         release_firmware(ucode_raw);
6520
6521  error:
6522         return ret;
6523 }
6524
6525
6526 /**
6527  * iwl4965_set_ucode_ptrs - Set uCode address location
6528  *
6529  * Tell initialization uCode where to find runtime uCode.
6530  *
6531  * BSM registers initially contain pointers to initialization uCode.
6532  * We need to replace them to load runtime uCode inst and data,
6533  * and to save runtime data when powering down.
6534  */
6535 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6536 {
6537         dma_addr_t pinst;
6538         dma_addr_t pdata;
6539         int rc = 0;
6540         unsigned long flags;
6541
6542         /* bits 35:4 for 4965 */
6543         pinst = priv->ucode_code.p_addr >> 4;
6544         pdata = priv->ucode_data_backup.p_addr >> 4;
6545
6546         spin_lock_irqsave(&priv->lock, flags);
6547         rc = iwl4965_grab_nic_access(priv);
6548         if (rc) {
6549                 spin_unlock_irqrestore(&priv->lock, flags);
6550                 return rc;
6551         }
6552
6553         /* Tell bootstrap uCode where to find image to load */
6554         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6555         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6556         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6557                                  priv->ucode_data.len);
6558
6559         /* Inst bytecount must be last to set up, bit 31 signals uCode
6560          *   that all new ptr/size info is in place */
6561         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6562                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6563
6564         iwl4965_release_nic_access(priv);
6565
6566         spin_unlock_irqrestore(&priv->lock, flags);
6567
6568         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6569
6570         return rc;
6571 }
6572
6573 /**
6574  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6575  *
6576  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6577  *
6578  * The 4965 "initialize" ALIVE reply contains calibration data for:
6579  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
6580  *   (3945 does not contain this data).
6581  *
6582  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6583 */
6584 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6585 {
6586         /* Check alive response for "valid" sign from uCode */
6587         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6588                 /* We had an error bringing up the hardware, so take it
6589                  * all the way back down so we can try again */
6590                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6591                 goto restart;
6592         }
6593
6594         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6595          * This is a paranoid check, because we would not have gotten the
6596          * "initialize" alive if code weren't properly loaded.  */
6597         if (iwl4965_verify_ucode(priv)) {
6598                 /* Runtime instruction load was bad;
6599                  * take it all the way back down so we can try again */
6600                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6601                 goto restart;
6602         }
6603
6604         /* Calculate temperature */
6605         priv->temperature = iwl4965_get_temperature(priv);
6606
6607         /* Send pointers to protocol/runtime uCode image ... init code will
6608          * load and launch runtime uCode, which will send us another "Alive"
6609          * notification. */
6610         IWL_DEBUG_INFO("Initialization Alive received.\n");
6611         if (iwl4965_set_ucode_ptrs(priv)) {
6612                 /* Runtime instruction load won't happen;
6613                  * take it all the way back down so we can try again */
6614                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6615                 goto restart;
6616         }
6617         return;
6618
6619  restart:
6620         queue_work(priv->workqueue, &priv->restart);
6621 }
6622
6623
6624 /**
6625  * iwl4965_alive_start - called after REPLY_ALIVE notification received
6626  *                   from protocol/runtime uCode (initialization uCode's
6627  *                   Alive gets handled by iwl4965_init_alive_start()).
6628  */
6629 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6630 {
6631         int rc = 0;
6632
6633         IWL_DEBUG_INFO("Runtime Alive received.\n");
6634
6635         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6636                 /* We had an error bringing up the hardware, so take it
6637                  * all the way back down so we can try again */
6638                 IWL_DEBUG_INFO("Alive failed.\n");
6639                 goto restart;
6640         }
6641
6642         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6643          * This is a paranoid check, because we would not have gotten the
6644          * "runtime" alive if code weren't properly loaded.  */
6645         if (iwl4965_verify_ucode(priv)) {
6646                 /* Runtime instruction load was bad;
6647                  * take it all the way back down so we can try again */
6648                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6649                 goto restart;
6650         }
6651
6652         iwl4965_clear_stations_table(priv);
6653
6654         rc = iwl4965_alive_notify(priv);
6655         if (rc) {
6656                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6657                             rc);
6658                 goto restart;
6659         }
6660
6661         /* After the ALIVE response, we can send host commands to 4965 uCode */
6662         set_bit(STATUS_ALIVE, &priv->status);
6663
6664         /* Clear out the uCode error bit if it is set */
6665         clear_bit(STATUS_FW_ERROR, &priv->status);
6666
6667         rc = iwl4965_init_channel_map(priv);
6668         if (rc) {
6669                 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6670                 return;
6671         }
6672
6673         iwl4965_init_geos(priv);
6674
6675         if (iwl4965_is_rfkill(priv))
6676                 return;
6677
6678         if (!priv->mac80211_registered) {
6679                 /* Unlock so any user space entry points can call back into
6680                  * the driver without a deadlock... */
6681                 mutex_unlock(&priv->mutex);
6682                 iwl4965_rate_control_register(priv->hw);
6683                 rc = ieee80211_register_hw(priv->hw);
6684                 priv->hw->conf.beacon_int = 100;
6685                 mutex_lock(&priv->mutex);
6686
6687                 if (rc) {
6688                         iwl4965_rate_control_unregister(priv->hw);
6689                         IWL_ERROR("Failed to register network "
6690                                   "device (error %d)\n", rc);
6691                         return;
6692                 }
6693
6694                 priv->mac80211_registered = 1;
6695
6696                 iwl4965_reset_channel_flag(priv);
6697         } else
6698                 ieee80211_start_queues(priv->hw);
6699
6700         priv->active_rate = priv->rates_mask;
6701         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6702
6703         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6704
6705         if (iwl4965_is_associated(priv)) {
6706                 struct iwl4965_rxon_cmd *active_rxon =
6707                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6708
6709                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6710                        sizeof(priv->staging_rxon));
6711                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6712         } else {
6713                 /* Initialize our rx_config data */
6714                 iwl4965_connection_init_rx_config(priv);
6715                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6716         }
6717
6718         /* Configure Bluetooth device coexistence support */
6719         iwl4965_send_bt_config(priv);
6720
6721         /* Configure the adapter for unassociated operation */
6722         iwl4965_commit_rxon(priv);
6723
6724         /* At this point, the NIC is initialized and operational */
6725         priv->notif_missed_beacons = 0;
6726         set_bit(STATUS_READY, &priv->status);
6727
6728         iwl4965_rf_kill_ct_config(priv);
6729         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6730
6731         if (priv->error_recovering)
6732                 iwl4965_error_recovery(priv);
6733
6734         return;
6735
6736  restart:
6737         queue_work(priv->workqueue, &priv->restart);
6738 }
6739
6740 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6741
6742 static void __iwl4965_down(struct iwl4965_priv *priv)
6743 {
6744         unsigned long flags;
6745         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6746         struct ieee80211_conf *conf = NULL;
6747
6748         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6749
6750         conf = ieee80211_get_hw_conf(priv->hw);
6751
6752         if (!exit_pending)
6753                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6754
6755         iwl4965_clear_stations_table(priv);
6756
6757         /* Unblock any waiting calls */
6758         wake_up_interruptible_all(&priv->wait_command_queue);
6759
6760         /* Wipe out the EXIT_PENDING status bit if we are not actually
6761          * exiting the module */
6762         if (!exit_pending)
6763                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6764
6765         /* stop and reset the on-board processor */
6766         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6767
6768         /* tell the device to stop sending interrupts */
6769         iwl4965_disable_interrupts(priv);
6770
6771         if (priv->mac80211_registered)
6772                 ieee80211_stop_queues(priv->hw);
6773
6774         /* If we have not previously called iwl4965_init() then
6775          * clear all bits but the RF Kill and SUSPEND bits and return */
6776         if (!iwl4965_is_init(priv)) {
6777                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6778                                         STATUS_RF_KILL_HW |
6779                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6780                                         STATUS_RF_KILL_SW |
6781                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6782                                         STATUS_IN_SUSPEND;
6783                 goto exit;
6784         }
6785
6786         /* ...otherwise clear out all the status bits but the RF Kill and
6787          * SUSPEND bits and continue taking the NIC down. */
6788         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6789                                 STATUS_RF_KILL_HW |
6790                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6791                                 STATUS_RF_KILL_SW |
6792                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6793                                 STATUS_IN_SUSPEND |
6794                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6795                                 STATUS_FW_ERROR;
6796
6797         spin_lock_irqsave(&priv->lock, flags);
6798         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6799                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6800         spin_unlock_irqrestore(&priv->lock, flags);
6801
6802         iwl4965_hw_txq_ctx_stop(priv);
6803         iwl4965_hw_rxq_stop(priv);
6804
6805         spin_lock_irqsave(&priv->lock, flags);
6806         if (!iwl4965_grab_nic_access(priv)) {
6807                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6808                                          APMG_CLK_VAL_DMA_CLK_RQT);
6809                 iwl4965_release_nic_access(priv);
6810         }
6811         spin_unlock_irqrestore(&priv->lock, flags);
6812
6813         udelay(5);
6814
6815         iwl4965_hw_nic_stop_master(priv);
6816         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6817         iwl4965_hw_nic_reset(priv);
6818
6819  exit:
6820         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6821
6822         if (priv->ibss_beacon)
6823                 dev_kfree_skb(priv->ibss_beacon);
6824         priv->ibss_beacon = NULL;
6825
6826         /* clear out any free frames */
6827         iwl4965_clear_free_frames(priv);
6828 }
6829
6830 static void iwl4965_down(struct iwl4965_priv *priv)
6831 {
6832         mutex_lock(&priv->mutex);
6833         __iwl4965_down(priv);
6834         mutex_unlock(&priv->mutex);
6835
6836         iwl4965_cancel_deferred_work(priv);
6837 }
6838
6839 #define MAX_HW_RESTARTS 5
6840
6841 static int __iwl4965_up(struct iwl4965_priv *priv)
6842 {
6843         DECLARE_MAC_BUF(mac);
6844         int rc, i;
6845         u32 hw_rf_kill = 0;
6846
6847         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6848                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6849                 return -EIO;
6850         }
6851
6852         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6853                 IWL_WARNING("Radio disabled by SW RF kill (module "
6854                             "parameter)\n");
6855                 return 0;
6856         }
6857
6858         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6859                 IWL_ERROR("ucode not available for device bringup\n");
6860                 return -EIO;
6861         }
6862
6863         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6864
6865         rc = iwl4965_hw_nic_init(priv);
6866         if (rc) {
6867                 IWL_ERROR("Unable to int nic\n");
6868                 return rc;
6869         }
6870
6871         /* make sure rfkill handshake bits are cleared */
6872         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6873         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6874                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6875
6876         /* clear (again), then enable host interrupts */
6877         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6878         iwl4965_enable_interrupts(priv);
6879
6880         /* really make sure rfkill handshake bits are cleared */
6881         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6882         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6883
6884         /* Copy original ucode data image from disk into backup cache.
6885          * This will be used to initialize the on-board processor's
6886          * data SRAM for a clean start when the runtime program first loads. */
6887         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6888                         priv->ucode_data.len);
6889
6890         /* If platform's RF_KILL switch is set to KILL,
6891          * wait for BIT_INT_RF_KILL interrupt before loading uCode
6892          * and getting things started */
6893         if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
6894                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6895                 hw_rf_kill = 1;
6896
6897         if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6898                 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6899                 return 0;
6900         }
6901
6902         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6903
6904                 iwl4965_clear_stations_table(priv);
6905
6906                 /* load bootstrap state machine,
6907                  * load bootstrap program into processor's memory,
6908                  * prepare to load the "initialize" uCode */
6909                 rc = iwl4965_load_bsm(priv);
6910
6911                 if (rc) {
6912                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6913                         continue;
6914                 }
6915
6916                 /* start card; "initialize" will load runtime ucode */
6917                 iwl4965_nic_start(priv);
6918
6919                 /* MAC Address location in EEPROM is same for 3945/4965 */
6920                 get_eeprom_mac(priv, priv->mac_addr);
6921                 IWL_DEBUG_INFO("MAC address: %s\n",
6922                                print_mac(mac, priv->mac_addr));
6923
6924                 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6925
6926                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6927
6928                 return 0;
6929         }
6930
6931         set_bit(STATUS_EXIT_PENDING, &priv->status);
6932         __iwl4965_down(priv);
6933
6934         /* tried to restart and config the device for as long as our
6935          * patience could withstand */
6936         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6937         return -EIO;
6938 }
6939
6940
6941 /*****************************************************************************
6942  *
6943  * Workqueue callbacks
6944  *
6945  *****************************************************************************/
6946
6947 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6948 {
6949         struct iwl4965_priv *priv =
6950             container_of(data, struct iwl4965_priv, init_alive_start.work);
6951
6952         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6953                 return;
6954
6955         mutex_lock(&priv->mutex);
6956         iwl4965_init_alive_start(priv);
6957         mutex_unlock(&priv->mutex);
6958 }
6959
6960 static void iwl4965_bg_alive_start(struct work_struct *data)
6961 {
6962         struct iwl4965_priv *priv =
6963             container_of(data, struct iwl4965_priv, alive_start.work);
6964
6965         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6966                 return;
6967
6968         mutex_lock(&priv->mutex);
6969         iwl4965_alive_start(priv);
6970         mutex_unlock(&priv->mutex);
6971 }
6972
6973 static void iwl4965_bg_rf_kill(struct work_struct *work)
6974 {
6975         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6976
6977         wake_up_interruptible(&priv->wait_command_queue);
6978
6979         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6980                 return;
6981
6982         mutex_lock(&priv->mutex);
6983
6984         if (!iwl4965_is_rfkill(priv)) {
6985                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6986                           "HW and/or SW RF Kill no longer active, restarting "
6987                           "device\n");
6988                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6989                         queue_work(priv->workqueue, &priv->restart);
6990         } else {
6991
6992                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6993                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6994                                           "disabled by SW switch\n");
6995                 else
6996                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6997                                     "Kill switch must be turned off for "
6998                                     "wireless networking to work.\n");
6999         }
7000         mutex_unlock(&priv->mutex);
7001 }
7002
7003 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
7004
7005 static void iwl4965_bg_scan_check(struct work_struct *data)
7006 {
7007         struct iwl4965_priv *priv =
7008             container_of(data, struct iwl4965_priv, scan_check.work);
7009
7010         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7011                 return;
7012
7013         mutex_lock(&priv->mutex);
7014         if (test_bit(STATUS_SCANNING, &priv->status) ||
7015             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
7016                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
7017                           "Scan completion watchdog resetting adapter (%dms)\n",
7018                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
7019
7020                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
7021                         iwl4965_send_scan_abort(priv);
7022         }
7023         mutex_unlock(&priv->mutex);
7024 }
7025
7026 static void iwl4965_bg_request_scan(struct work_struct *data)
7027 {
7028         struct iwl4965_priv *priv =
7029             container_of(data, struct iwl4965_priv, request_scan);
7030         struct iwl4965_host_cmd cmd = {
7031                 .id = REPLY_SCAN_CMD,
7032                 .len = sizeof(struct iwl4965_scan_cmd),
7033                 .meta.flags = CMD_SIZE_HUGE,
7034         };
7035         int rc = 0;
7036         struct iwl4965_scan_cmd *scan;
7037         struct ieee80211_conf *conf = NULL;
7038         u8 direct_mask;
7039         int phymode;
7040
7041         conf = ieee80211_get_hw_conf(priv->hw);
7042
7043         mutex_lock(&priv->mutex);
7044
7045         if (!iwl4965_is_ready(priv)) {
7046                 IWL_WARNING("request scan called when driver not ready.\n");
7047                 goto done;
7048         }
7049
7050         /* Make sure the scan wasn't cancelled before this queued work
7051          * was given the chance to run... */
7052         if (!test_bit(STATUS_SCANNING, &priv->status))
7053                 goto done;
7054
7055         /* This should never be called or scheduled if there is currently
7056          * a scan active in the hardware. */
7057         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
7058                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
7059                                "Ignoring second request.\n");
7060                 rc = -EIO;
7061                 goto done;
7062         }
7063
7064         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
7065                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
7066                 goto done;
7067         }
7068
7069         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
7070                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
7071                 goto done;
7072         }
7073
7074         if (iwl4965_is_rfkill(priv)) {
7075                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
7076                 goto done;
7077         }
7078
7079         if (!test_bit(STATUS_READY, &priv->status)) {
7080                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
7081                 goto done;
7082         }
7083
7084         if (!priv->scan_bands) {
7085                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
7086                 goto done;
7087         }
7088
7089         if (!priv->scan) {
7090                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
7091                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
7092                 if (!priv->scan) {
7093                         rc = -ENOMEM;
7094                         goto done;
7095                 }
7096         }
7097         scan = priv->scan;
7098         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
7099
7100         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
7101         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
7102
7103         if (iwl4965_is_associated(priv)) {
7104                 u16 interval = 0;
7105                 u32 extra;
7106                 u32 suspend_time = 100;
7107                 u32 scan_suspend_time = 100;
7108                 unsigned long flags;
7109
7110                 IWL_DEBUG_INFO("Scanning while associated...\n");
7111
7112                 spin_lock_irqsave(&priv->lock, flags);
7113                 interval = priv->beacon_int;
7114                 spin_unlock_irqrestore(&priv->lock, flags);
7115
7116                 scan->suspend_time = 0;
7117                 scan->max_out_time = cpu_to_le32(200 * 1024);
7118                 if (!interval)
7119                         interval = suspend_time;
7120
7121                 extra = (suspend_time / interval) << 22;
7122                 scan_suspend_time = (extra |
7123                     ((suspend_time % interval) * 1024));
7124                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
7125                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
7126                                scan_suspend_time, interval);
7127         }
7128
7129         /* We should add the ability for user to lock to PASSIVE ONLY */
7130         if (priv->one_direct_scan) {
7131                 IWL_DEBUG_SCAN
7132                     ("Kicking off one direct scan for '%s'\n",
7133                      iwl4965_escape_essid(priv->direct_ssid,
7134                                       priv->direct_ssid_len));
7135                 scan->direct_scan[0].id = WLAN_EID_SSID;
7136                 scan->direct_scan[0].len = priv->direct_ssid_len;
7137                 memcpy(scan->direct_scan[0].ssid,
7138                        priv->direct_ssid, priv->direct_ssid_len);
7139                 direct_mask = 1;
7140         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
7141                 scan->direct_scan[0].id = WLAN_EID_SSID;
7142                 scan->direct_scan[0].len = priv->essid_len;
7143                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
7144                 direct_mask = 1;
7145         } else
7146                 direct_mask = 0;
7147
7148         /* We don't build a direct scan probe request; the uCode will do
7149          * that based on the direct_mask added to each channel entry */
7150         scan->tx_cmd.len = cpu_to_le16(
7151                 iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
7152                         IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
7153         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
7154         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
7155         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
7156
7157         /* flags + rate selection */
7158
7159         scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
7160
7161         switch (priv->scan_bands) {
7162         case 2:
7163                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
7164                 scan->tx_cmd.rate_n_flags =
7165                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
7166                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7167
7168                 scan->good_CRC_th = 0;
7169                 phymode = MODE_IEEE80211G;
7170                 break;
7171
7172         case 1:
7173                 scan->tx_cmd.rate_n_flags =
7174                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7175                                 RATE_MCS_ANT_B_MSK);
7176                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7177                 phymode = MODE_IEEE80211A;
7178                 break;
7179
7180         default:
7181                 IWL_WARNING("Invalid scan band count\n");
7182                 goto done;
7183         }
7184
7185         /* select Rx chains */
7186
7187         /* Force use of chains B and C (0x6) for scan Rx.
7188          * Avoid A (0x1) because of its off-channel reception on A-band.
7189          * MIMO is not used here, but value is required to make uCode happy. */
7190         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7191                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7192                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7193                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7194
7195         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7196                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7197
7198         if (direct_mask)
7199                 IWL_DEBUG_SCAN
7200                     ("Initiating direct scan for %s.\n",
7201                      iwl4965_escape_essid(priv->essid, priv->essid_len));
7202         else
7203                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7204
7205         scan->channel_count =
7206                 iwl4965_get_channels_for_scan(
7207                         priv, phymode, 1, /* active */
7208                         direct_mask,
7209                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7210
7211         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7212             scan->channel_count * sizeof(struct iwl4965_scan_channel);
7213         cmd.data = scan;
7214         scan->len = cpu_to_le16(cmd.len);
7215
7216         set_bit(STATUS_SCAN_HW, &priv->status);
7217         rc = iwl4965_send_cmd_sync(priv, &cmd);
7218         if (rc)
7219                 goto done;
7220
7221         queue_delayed_work(priv->workqueue, &priv->scan_check,
7222                            IWL_SCAN_CHECK_WATCHDOG);
7223
7224         mutex_unlock(&priv->mutex);
7225         return;
7226
7227  done:
7228         /* inform mac80211 scan aborted */
7229         queue_work(priv->workqueue, &priv->scan_completed);
7230         mutex_unlock(&priv->mutex);
7231 }
7232
7233 static void iwl4965_bg_up(struct work_struct *data)
7234 {
7235         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7236
7237         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7238                 return;
7239
7240         mutex_lock(&priv->mutex);
7241         __iwl4965_up(priv);
7242         mutex_unlock(&priv->mutex);
7243 }
7244
7245 static void iwl4965_bg_restart(struct work_struct *data)
7246 {
7247         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7248
7249         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7250                 return;
7251
7252         iwl4965_down(priv);
7253         queue_work(priv->workqueue, &priv->up);
7254 }
7255
7256 static void iwl4965_bg_rx_replenish(struct work_struct *data)
7257 {
7258         struct iwl4965_priv *priv =
7259             container_of(data, struct iwl4965_priv, rx_replenish);
7260
7261         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7262                 return;
7263
7264         mutex_lock(&priv->mutex);
7265         iwl4965_rx_replenish(priv);
7266         mutex_unlock(&priv->mutex);
7267 }
7268
7269 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7270
7271 static void iwl4965_bg_post_associate(struct work_struct *data)
7272 {
7273         struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7274                                              post_associate.work);
7275
7276         int rc = 0;
7277         struct ieee80211_conf *conf = NULL;
7278         DECLARE_MAC_BUF(mac);
7279
7280         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7281                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7282                 return;
7283         }
7284
7285         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7286                         priv->assoc_id,
7287                         print_mac(mac, priv->active_rxon.bssid_addr));
7288
7289
7290         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7291                 return;
7292
7293         mutex_lock(&priv->mutex);
7294
7295         if (!priv->interface_id || !priv->is_open) {
7296                 mutex_unlock(&priv->mutex);
7297                 return;
7298         }
7299         iwl4965_scan_cancel_timeout(priv, 200);
7300
7301         conf = ieee80211_get_hw_conf(priv->hw);
7302
7303         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7304         iwl4965_commit_rxon(priv);
7305
7306         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7307         iwl4965_setup_rxon_timing(priv);
7308         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7309                               sizeof(priv->rxon_timing), &priv->rxon_timing);
7310         if (rc)
7311                 IWL_WARNING("REPLY_RXON_TIMING failed - "
7312                             "Attempting to continue.\n");
7313
7314         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7315
7316 #ifdef CONFIG_IWL4965_HT
7317         if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7318                 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7319         else {
7320                 priv->active_rate_ht[0] = 0;
7321                 priv->active_rate_ht[1] = 0;
7322                 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7323         }
7324 #endif /* CONFIG_IWL4965_HT*/
7325         iwl4965_set_rxon_chain(priv);
7326         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7327
7328         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7329                         priv->assoc_id, priv->beacon_int);
7330
7331         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7332                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7333         else
7334                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7335
7336         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7337                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7338                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7339                 else
7340                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7341
7342                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7343                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7344
7345         }
7346
7347         iwl4965_commit_rxon(priv);
7348
7349         switch (priv->iw_mode) {
7350         case IEEE80211_IF_TYPE_STA:
7351                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7352                 break;
7353
7354         case IEEE80211_IF_TYPE_IBSS:
7355
7356                 /* clear out the station table */
7357                 iwl4965_clear_stations_table(priv);
7358
7359                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7360                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7361                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7362                 iwl4965_send_beacon_cmd(priv);
7363
7364                 break;
7365
7366         default:
7367                 IWL_ERROR("%s Should not be called in %d mode\n",
7368                                 __FUNCTION__, priv->iw_mode);
7369                 break;
7370         }
7371
7372         iwl4965_sequence_reset(priv);
7373
7374 #ifdef CONFIG_IWL4965_SENSITIVITY
7375         /* Enable Rx differential gain and sensitivity calibrations */
7376         iwl4965_chain_noise_reset(priv);
7377         priv->start_calib = 1;
7378 #endif /* CONFIG_IWL4965_SENSITIVITY */
7379
7380         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7381                 priv->assoc_station_added = 1;
7382
7383 #ifdef CONFIG_IWL4965_QOS
7384         iwl4965_activate_qos(priv, 0);
7385 #endif /* CONFIG_IWL4965_QOS */
7386         /* we have just associated, don't start scan too early */
7387         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7388         mutex_unlock(&priv->mutex);
7389 }
7390
7391 static void iwl4965_bg_abort_scan(struct work_struct *work)
7392 {
7393         struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7394
7395         if (!iwl4965_is_ready(priv))
7396                 return;
7397
7398         mutex_lock(&priv->mutex);
7399
7400         set_bit(STATUS_SCAN_ABORTING, &priv->status);
7401         iwl4965_send_scan_abort(priv);
7402
7403         mutex_unlock(&priv->mutex);
7404 }
7405
7406 static void iwl4965_bg_scan_completed(struct work_struct *work)
7407 {
7408         struct iwl4965_priv *priv =
7409             container_of(work, struct iwl4965_priv, scan_completed);
7410
7411         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7412
7413         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7414                 return;
7415
7416         ieee80211_scan_completed(priv->hw);
7417
7418         /* Since setting the TXPOWER may have been deferred while
7419          * performing the scan, fire one off */
7420         mutex_lock(&priv->mutex);
7421         iwl4965_hw_reg_send_txpower(priv);
7422         mutex_unlock(&priv->mutex);
7423 }
7424
7425 /*****************************************************************************
7426  *
7427  * mac80211 entry point functions
7428  *
7429  *****************************************************************************/
7430
7431 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7432 {
7433         struct iwl4965_priv *priv = hw->priv;
7434
7435         IWL_DEBUG_MAC80211("enter\n");
7436
7437         /* we should be verifying the device is ready to be opened */
7438         mutex_lock(&priv->mutex);
7439
7440         priv->is_open = 1;
7441
7442         if (!iwl4965_is_rfkill(priv))
7443                 ieee80211_start_queues(priv->hw);
7444
7445         mutex_unlock(&priv->mutex);
7446         IWL_DEBUG_MAC80211("leave\n");
7447         return 0;
7448 }
7449
7450 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7451 {
7452         struct iwl4965_priv *priv = hw->priv;
7453
7454         IWL_DEBUG_MAC80211("enter\n");
7455
7456
7457         mutex_lock(&priv->mutex);
7458         /* stop mac, cancel any scan request and clear
7459          * RXON_FILTER_ASSOC_MSK BIT
7460          */
7461         priv->is_open = 0;
7462         if (!iwl4965_is_ready_rf(priv)) {
7463                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7464                 mutex_unlock(&priv->mutex);
7465                 return;
7466         }
7467
7468         iwl4965_scan_cancel_timeout(priv, 100);
7469         cancel_delayed_work(&priv->post_associate);
7470         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7471         iwl4965_commit_rxon(priv);
7472         mutex_unlock(&priv->mutex);
7473
7474         IWL_DEBUG_MAC80211("leave\n");
7475 }
7476
7477 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7478                       struct ieee80211_tx_control *ctl)
7479 {
7480         struct iwl4965_priv *priv = hw->priv;
7481
7482         IWL_DEBUG_MAC80211("enter\n");
7483
7484         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7485                 IWL_DEBUG_MAC80211("leave - monitor\n");
7486                 return -1;
7487         }
7488
7489         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7490                      ctl->tx_rate);
7491
7492         if (iwl4965_tx_skb(priv, skb, ctl))
7493                 dev_kfree_skb_any(skb);
7494
7495         IWL_DEBUG_MAC80211("leave\n");
7496         return 0;
7497 }
7498
7499 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7500                                  struct ieee80211_if_init_conf *conf)
7501 {
7502         struct iwl4965_priv *priv = hw->priv;
7503         unsigned long flags;
7504         DECLARE_MAC_BUF(mac);
7505
7506         IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7507
7508         if (priv->interface_id) {
7509                 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7510                 return 0;
7511         }
7512
7513         spin_lock_irqsave(&priv->lock, flags);
7514         priv->interface_id = conf->if_id;
7515
7516         spin_unlock_irqrestore(&priv->lock, flags);
7517
7518         mutex_lock(&priv->mutex);
7519
7520         if (conf->mac_addr) {
7521                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7522                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7523         }
7524         iwl4965_set_mode(priv, conf->type);
7525
7526         IWL_DEBUG_MAC80211("leave\n");
7527         mutex_unlock(&priv->mutex);
7528
7529         return 0;
7530 }
7531
7532 /**
7533  * iwl4965_mac_config - mac80211 config callback
7534  *
7535  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7536  * be set inappropriately and the driver currently sets the hardware up to
7537  * use it whenever needed.
7538  */
7539 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7540 {
7541         struct iwl4965_priv *priv = hw->priv;
7542         const struct iwl4965_channel_info *ch_info;
7543         unsigned long flags;
7544
7545         mutex_lock(&priv->mutex);
7546         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7547
7548         if (!iwl4965_is_ready(priv)) {
7549                 IWL_DEBUG_MAC80211("leave - not ready\n");
7550                 mutex_unlock(&priv->mutex);
7551                 return -EIO;
7552         }
7553
7554         /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7555          * what is exposed through include/ declarations */
7556         if (unlikely(!iwl4965_param_disable_hw_scan &&
7557                      test_bit(STATUS_SCANNING, &priv->status))) {
7558                 IWL_DEBUG_MAC80211("leave - scanning\n");
7559                 mutex_unlock(&priv->mutex);
7560                 return 0;
7561         }
7562
7563         spin_lock_irqsave(&priv->lock, flags);
7564
7565         ch_info = iwl4965_get_channel_info(priv, conf->phymode, conf->channel);
7566         if (!is_channel_valid(ch_info)) {
7567                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7568                                conf->channel, conf->phymode);
7569                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7570                 spin_unlock_irqrestore(&priv->lock, flags);
7571                 mutex_unlock(&priv->mutex);
7572                 return -EINVAL;
7573         }
7574
7575 #ifdef CONFIG_IWL4965_HT
7576         /* if we are switching fron ht to 2.4 clear flags
7577          * from any ht related info since 2.4 does not
7578          * support ht */
7579         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7580 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7581             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7582 #endif
7583         )
7584                 priv->staging_rxon.flags = 0;
7585 #endif /* CONFIG_IWL4965_HT */
7586
7587         iwl4965_set_rxon_channel(priv, conf->phymode, conf->channel);
7588
7589         iwl4965_set_flags_for_phymode(priv, conf->phymode);
7590
7591         /* The list of supported rates and rate mask can be different
7592          * for each phymode; since the phymode may have changed, reset
7593          * the rate mask to what mac80211 lists */
7594         iwl4965_set_rate(priv);
7595
7596         spin_unlock_irqrestore(&priv->lock, flags);
7597
7598 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7599         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7600                 iwl4965_hw_channel_switch(priv, conf->channel);
7601                 mutex_unlock(&priv->mutex);
7602                 return 0;
7603         }
7604 #endif
7605
7606         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7607
7608         if (!conf->radio_enabled) {
7609                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7610                 mutex_unlock(&priv->mutex);
7611                 return 0;
7612         }
7613
7614         if (iwl4965_is_rfkill(priv)) {
7615                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7616                 mutex_unlock(&priv->mutex);
7617                 return -EIO;
7618         }
7619
7620         iwl4965_set_rate(priv);
7621
7622         if (memcmp(&priv->active_rxon,
7623                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7624                 iwl4965_commit_rxon(priv);
7625         else
7626                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7627
7628         IWL_DEBUG_MAC80211("leave\n");
7629
7630         mutex_unlock(&priv->mutex);
7631
7632         return 0;
7633 }
7634
7635 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7636 {
7637         int rc = 0;
7638
7639         if (priv->status & STATUS_EXIT_PENDING)
7640                 return;
7641
7642         /* The following should be done only at AP bring up */
7643         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7644
7645                 /* RXON - unassoc (to set timing command) */
7646                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7647                 iwl4965_commit_rxon(priv);
7648
7649                 /* RXON Timing */
7650                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7651                 iwl4965_setup_rxon_timing(priv);
7652                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7653                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7654                 if (rc)
7655                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7656                                         "Attempting to continue.\n");
7657
7658                 iwl4965_set_rxon_chain(priv);
7659
7660                 /* FIXME: what should be the assoc_id for AP? */
7661                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7662                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7663                         priv->staging_rxon.flags |=
7664                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7665                 else
7666                         priv->staging_rxon.flags &=
7667                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7668
7669                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7670                         if (priv->assoc_capability &
7671                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7672                                 priv->staging_rxon.flags |=
7673                                         RXON_FLG_SHORT_SLOT_MSK;
7674                         else
7675                                 priv->staging_rxon.flags &=
7676                                         ~RXON_FLG_SHORT_SLOT_MSK;
7677
7678                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7679                                 priv->staging_rxon.flags &=
7680                                         ~RXON_FLG_SHORT_SLOT_MSK;
7681                 }
7682                 /* restore RXON assoc */
7683                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7684                 iwl4965_commit_rxon(priv);
7685 #ifdef CONFIG_IWL4965_QOS
7686                 iwl4965_activate_qos(priv, 1);
7687 #endif
7688                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7689         }
7690         iwl4965_send_beacon_cmd(priv);
7691
7692         /* FIXME - we need to add code here to detect a totally new
7693          * configuration, reset the AP, unassoc, rxon timing, assoc,
7694          * clear sta table, add BCAST sta... */
7695 }
7696
7697 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7698                                     struct ieee80211_if_conf *conf)
7699 {
7700         struct iwl4965_priv *priv = hw->priv;
7701         DECLARE_MAC_BUF(mac);
7702         unsigned long flags;
7703         int rc;
7704
7705         if (conf == NULL)
7706                 return -EIO;
7707
7708         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7709             (!conf->beacon || !conf->ssid_len)) {
7710                 IWL_DEBUG_MAC80211
7711                     ("Leaving in AP mode because HostAPD is not ready.\n");
7712                 return 0;
7713         }
7714
7715         mutex_lock(&priv->mutex);
7716
7717         IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7718         if (conf->bssid)
7719                 IWL_DEBUG_MAC80211("bssid: %s\n",
7720                                    print_mac(mac, conf->bssid));
7721
7722 /*
7723  * very dubious code was here; the probe filtering flag is never set:
7724  *
7725         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7726             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7727  */
7728         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7729                 IWL_DEBUG_MAC80211("leave - scanning\n");
7730                 mutex_unlock(&priv->mutex);
7731                 return 0;
7732         }
7733
7734         if (priv->interface_id != if_id) {
7735                 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7736                 mutex_unlock(&priv->mutex);
7737                 return 0;
7738         }
7739
7740         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7741                 if (!conf->bssid) {
7742                         conf->bssid = priv->mac_addr;
7743                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7744                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7745                                            print_mac(mac, conf->bssid));
7746                 }
7747                 if (priv->ibss_beacon)
7748                         dev_kfree_skb(priv->ibss_beacon);
7749
7750                 priv->ibss_beacon = conf->beacon;
7751         }
7752
7753         if (iwl4965_is_rfkill(priv))
7754                 goto done;
7755
7756         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7757             !is_multicast_ether_addr(conf->bssid)) {
7758                 /* If there is currently a HW scan going on in the background
7759                  * then we need to cancel it else the RXON below will fail. */
7760                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7761                         IWL_WARNING("Aborted scan still in progress "
7762                                     "after 100ms\n");
7763                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7764                         mutex_unlock(&priv->mutex);
7765                         return -EAGAIN;
7766                 }
7767                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7768
7769                 /* TODO: Audit driver for usage of these members and see
7770                  * if mac80211 deprecates them (priv->bssid looks like it
7771                  * shouldn't be there, but I haven't scanned the IBSS code
7772                  * to verify) - jpk */
7773                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7774
7775                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7776                         iwl4965_config_ap(priv);
7777                 else {
7778                         rc = iwl4965_commit_rxon(priv);
7779                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7780                                 iwl4965_rxon_add_station(
7781                                         priv, priv->active_rxon.bssid_addr, 1);
7782                 }
7783
7784         } else {
7785                 iwl4965_scan_cancel_timeout(priv, 100);
7786                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7787                 iwl4965_commit_rxon(priv);
7788         }
7789
7790  done:
7791         spin_lock_irqsave(&priv->lock, flags);
7792         if (!conf->ssid_len)
7793                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7794         else
7795                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7796
7797         priv->essid_len = conf->ssid_len;
7798         spin_unlock_irqrestore(&priv->lock, flags);
7799
7800         IWL_DEBUG_MAC80211("leave\n");
7801         mutex_unlock(&priv->mutex);
7802
7803         return 0;
7804 }
7805
7806 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7807                                  unsigned int changed_flags,
7808                                  unsigned int *total_flags,
7809                                  int mc_count, struct dev_addr_list *mc_list)
7810 {
7811         /*
7812          * XXX: dummy
7813          * see also iwl4965_connection_init_rx_config
7814          */
7815         *total_flags = 0;
7816 }
7817
7818 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7819                                      struct ieee80211_if_init_conf *conf)
7820 {
7821         struct iwl4965_priv *priv = hw->priv;
7822
7823         IWL_DEBUG_MAC80211("enter\n");
7824
7825         mutex_lock(&priv->mutex);
7826
7827         if (iwl4965_is_ready_rf(priv)) {
7828                 iwl4965_scan_cancel_timeout(priv, 100);
7829                 cancel_delayed_work(&priv->post_associate);
7830                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7831                 iwl4965_commit_rxon(priv);
7832         }
7833         if (priv->interface_id == conf->if_id) {
7834                 priv->interface_id = 0;
7835                 memset(priv->bssid, 0, ETH_ALEN);
7836                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7837                 priv->essid_len = 0;
7838         }
7839         mutex_unlock(&priv->mutex);
7840
7841         IWL_DEBUG_MAC80211("leave\n");
7842
7843 }
7844 static void iwl4965_mac_erp_ie_changed(struct ieee80211_hw *hw,
7845                 u8 changes, int cts_protection, int preamble)
7846 {
7847         struct iwl4965_priv *priv = hw->priv;
7848
7849         if (changes & IEEE80211_ERP_CHANGE_PREAMBLE) {
7850                 if (preamble == WLAN_ERP_PREAMBLE_SHORT)
7851                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7852                 else
7853                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7854         }
7855
7856         if (changes & IEEE80211_ERP_CHANGE_PROTECTION) {
7857                 if (cts_protection && (priv->phymode != MODE_IEEE80211A))
7858                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7859                 else
7860                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7861         }
7862
7863         if (iwl4965_is_associated(priv))
7864                 iwl4965_send_rxon_assoc(priv);
7865 }
7866
7867 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7868 {
7869         int rc = 0;
7870         unsigned long flags;
7871         struct iwl4965_priv *priv = hw->priv;
7872
7873         IWL_DEBUG_MAC80211("enter\n");
7874
7875         mutex_lock(&priv->mutex);
7876         spin_lock_irqsave(&priv->lock, flags);
7877
7878         if (!iwl4965_is_ready_rf(priv)) {
7879                 rc = -EIO;
7880                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7881                 goto out_unlock;
7882         }
7883
7884         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7885                 rc = -EIO;
7886                 IWL_ERROR("ERROR: APs don't scan\n");
7887                 goto out_unlock;
7888         }
7889
7890         /* we don't schedule scan within next_scan_jiffies period */
7891         if (priv->next_scan_jiffies &&
7892                         time_after(priv->next_scan_jiffies, jiffies)) {
7893                 rc = -EAGAIN;
7894                 goto out_unlock;
7895         }
7896         /* if we just finished scan ask for delay */
7897         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7898                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
7899                 rc = -EAGAIN;
7900                 goto out_unlock;
7901         }
7902         if (len) {
7903                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7904                                iwl4965_escape_essid(ssid, len), (int)len);
7905
7906                 priv->one_direct_scan = 1;
7907                 priv->direct_ssid_len = (u8)
7908                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7909                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7910         } else
7911                 priv->one_direct_scan = 0;
7912
7913         rc = iwl4965_scan_initiate(priv);
7914
7915         IWL_DEBUG_MAC80211("leave\n");
7916
7917 out_unlock:
7918         spin_unlock_irqrestore(&priv->lock, flags);
7919         mutex_unlock(&priv->mutex);
7920
7921         return rc;
7922 }
7923
7924 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7925                            const u8 *local_addr, const u8 *addr,
7926                            struct ieee80211_key_conf *key)
7927 {
7928         struct iwl4965_priv *priv = hw->priv;
7929         DECLARE_MAC_BUF(mac);
7930         int rc = 0;
7931         u8 sta_id;
7932
7933         IWL_DEBUG_MAC80211("enter\n");
7934
7935         if (!iwl4965_param_hwcrypto) {
7936                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7937                 return -EOPNOTSUPP;
7938         }
7939
7940         if (is_zero_ether_addr(addr))
7941                 /* only support pairwise keys */
7942                 return -EOPNOTSUPP;
7943
7944         sta_id = iwl4965_hw_find_station(priv, addr);
7945         if (sta_id == IWL_INVALID_STATION) {
7946                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7947                                    print_mac(mac, addr));
7948                 return -EINVAL;
7949         }
7950
7951         mutex_lock(&priv->mutex);
7952
7953         iwl4965_scan_cancel_timeout(priv, 100);
7954
7955         switch (cmd) {
7956         case  SET_KEY:
7957                 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7958                 if (!rc) {
7959                         iwl4965_set_rxon_hwcrypto(priv, 1);
7960                         iwl4965_commit_rxon(priv);
7961                         key->hw_key_idx = sta_id;
7962                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7963                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7964                 }
7965                 break;
7966         case DISABLE_KEY:
7967                 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7968                 if (!rc) {
7969                         iwl4965_set_rxon_hwcrypto(priv, 0);
7970                         iwl4965_commit_rxon(priv);
7971                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7972                 }
7973                 break;
7974         default:
7975                 rc = -EINVAL;
7976         }
7977
7978         IWL_DEBUG_MAC80211("leave\n");
7979         mutex_unlock(&priv->mutex);
7980
7981         return rc;
7982 }
7983
7984 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7985                            const struct ieee80211_tx_queue_params *params)
7986 {
7987         struct iwl4965_priv *priv = hw->priv;
7988 #ifdef CONFIG_IWL4965_QOS
7989         unsigned long flags;
7990         int q;
7991 #endif /* CONFIG_IWL4965_QOS */
7992
7993         IWL_DEBUG_MAC80211("enter\n");
7994
7995         if (!iwl4965_is_ready_rf(priv)) {
7996                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7997                 return -EIO;
7998         }
7999
8000         if (queue >= AC_NUM) {
8001                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
8002                 return 0;
8003         }
8004
8005 #ifdef CONFIG_IWL4965_QOS
8006         if (!priv->qos_data.qos_enable) {
8007                 priv->qos_data.qos_active = 0;
8008                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
8009                 return 0;
8010         }
8011         q = AC_NUM - 1 - queue;
8012
8013         spin_lock_irqsave(&priv->lock, flags);
8014
8015         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
8016         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
8017         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
8018         priv->qos_data.def_qos_parm.ac[q].edca_txop =
8019                         cpu_to_le16((params->burst_time * 100));
8020
8021         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
8022         priv->qos_data.qos_active = 1;
8023
8024         spin_unlock_irqrestore(&priv->lock, flags);
8025
8026         mutex_lock(&priv->mutex);
8027         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
8028                 iwl4965_activate_qos(priv, 1);
8029         else if (priv->assoc_id && iwl4965_is_associated(priv))
8030                 iwl4965_activate_qos(priv, 0);
8031
8032         mutex_unlock(&priv->mutex);
8033
8034 #endif /*CONFIG_IWL4965_QOS */
8035
8036         IWL_DEBUG_MAC80211("leave\n");
8037         return 0;
8038 }
8039
8040 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
8041                                 struct ieee80211_tx_queue_stats *stats)
8042 {
8043         struct iwl4965_priv *priv = hw->priv;
8044         int i, avail;
8045         struct iwl4965_tx_queue *txq;
8046         struct iwl4965_queue *q;
8047         unsigned long flags;
8048
8049         IWL_DEBUG_MAC80211("enter\n");
8050
8051         if (!iwl4965_is_ready_rf(priv)) {
8052                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8053                 return -EIO;
8054         }
8055
8056         spin_lock_irqsave(&priv->lock, flags);
8057
8058         for (i = 0; i < AC_NUM; i++) {
8059                 txq = &priv->txq[i];
8060                 q = &txq->q;
8061                 avail = iwl4965_queue_space(q);
8062
8063                 stats->data[i].len = q->n_window - avail;
8064                 stats->data[i].limit = q->n_window - q->high_mark;
8065                 stats->data[i].count = q->n_window;
8066
8067         }
8068         spin_unlock_irqrestore(&priv->lock, flags);
8069
8070         IWL_DEBUG_MAC80211("leave\n");
8071
8072         return 0;
8073 }
8074
8075 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
8076                              struct ieee80211_low_level_stats *stats)
8077 {
8078         IWL_DEBUG_MAC80211("enter\n");
8079         IWL_DEBUG_MAC80211("leave\n");
8080
8081         return 0;
8082 }
8083
8084 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
8085 {
8086         IWL_DEBUG_MAC80211("enter\n");
8087         IWL_DEBUG_MAC80211("leave\n");
8088
8089         return 0;
8090 }
8091
8092 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
8093 {
8094         struct iwl4965_priv *priv = hw->priv;
8095         unsigned long flags;
8096
8097         mutex_lock(&priv->mutex);
8098         IWL_DEBUG_MAC80211("enter\n");
8099
8100         priv->lq_mngr.lq_ready = 0;
8101 #ifdef CONFIG_IWL4965_HT
8102         spin_lock_irqsave(&priv->lock, flags);
8103         memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
8104         spin_unlock_irqrestore(&priv->lock, flags);
8105 #ifdef CONFIG_IWL4965_HT_AGG
8106 /*      if (priv->lq_mngr.agg_ctrl.granted_ba)
8107                 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
8108
8109         memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl4965_agg_control));
8110         priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
8111         priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
8112         priv->lq_mngr.agg_ctrl.auto_agg = 1;
8113
8114         if (priv->lq_mngr.agg_ctrl.auto_agg)
8115                 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
8116 #endif /*CONFIG_IWL4965_HT_AGG */
8117 #endif /* CONFIG_IWL4965_HT */
8118
8119 #ifdef CONFIG_IWL4965_QOS
8120         iwl4965_reset_qos(priv);
8121 #endif
8122
8123         cancel_delayed_work(&priv->post_associate);
8124
8125         spin_lock_irqsave(&priv->lock, flags);
8126         priv->assoc_id = 0;
8127         priv->assoc_capability = 0;
8128         priv->call_post_assoc_from_beacon = 0;
8129         priv->assoc_station_added = 0;
8130
8131         /* new association get rid of ibss beacon skb */
8132         if (priv->ibss_beacon)
8133                 dev_kfree_skb(priv->ibss_beacon);
8134
8135         priv->ibss_beacon = NULL;
8136
8137         priv->beacon_int = priv->hw->conf.beacon_int;
8138         priv->timestamp1 = 0;
8139         priv->timestamp0 = 0;
8140         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
8141                 priv->beacon_int = 0;
8142
8143         spin_unlock_irqrestore(&priv->lock, flags);
8144
8145         if (!iwl4965_is_ready_rf(priv)) {
8146                 IWL_DEBUG_MAC80211("leave - not ready\n");
8147                 mutex_unlock(&priv->mutex);
8148                 return;
8149         }
8150
8151         /* we are restarting association process
8152          * clear RXON_FILTER_ASSOC_MSK bit
8153          */
8154         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
8155                 iwl4965_scan_cancel_timeout(priv, 100);
8156                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
8157                 iwl4965_commit_rxon(priv);
8158         }
8159
8160         /* Per mac80211.h: This is only used in IBSS mode... */
8161         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8162
8163                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
8164                 mutex_unlock(&priv->mutex);
8165                 return;
8166         }
8167
8168         priv->only_active_channel = 0;
8169
8170         iwl4965_set_rate(priv);
8171
8172         mutex_unlock(&priv->mutex);
8173
8174         IWL_DEBUG_MAC80211("leave\n");
8175
8176 }
8177
8178 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
8179                                  struct ieee80211_tx_control *control)
8180 {
8181         struct iwl4965_priv *priv = hw->priv;
8182         unsigned long flags;
8183
8184         mutex_lock(&priv->mutex);
8185         IWL_DEBUG_MAC80211("enter\n");
8186
8187         if (!iwl4965_is_ready_rf(priv)) {
8188                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8189                 mutex_unlock(&priv->mutex);
8190                 return -EIO;
8191         }
8192
8193         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8194                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
8195                 mutex_unlock(&priv->mutex);
8196                 return -EIO;
8197         }
8198
8199         spin_lock_irqsave(&priv->lock, flags);
8200
8201         if (priv->ibss_beacon)
8202                 dev_kfree_skb(priv->ibss_beacon);
8203
8204         priv->ibss_beacon = skb;
8205
8206         priv->assoc_id = 0;
8207
8208         IWL_DEBUG_MAC80211("leave\n");
8209         spin_unlock_irqrestore(&priv->lock, flags);
8210
8211 #ifdef CONFIG_IWL4965_QOS
8212         iwl4965_reset_qos(priv);
8213 #endif
8214
8215         queue_work(priv->workqueue, &priv->post_associate.work);
8216
8217         mutex_unlock(&priv->mutex);
8218
8219         return 0;
8220 }
8221
8222 #ifdef CONFIG_IWL4965_HT
8223 union ht_cap_info {
8224         struct {
8225                 u16 advanced_coding_cap         :1;
8226                 u16 supported_chan_width_set    :1;
8227                 u16 mimo_power_save_mode        :2;
8228                 u16 green_field                 :1;
8229                 u16 short_GI20                  :1;
8230                 u16 short_GI40                  :1;
8231                 u16 tx_stbc                     :1;
8232                 u16 rx_stbc                     :1;
8233                 u16 beam_forming                :1;
8234                 u16 delayed_ba                  :1;
8235                 u16 maximal_amsdu_size          :1;
8236                 u16 cck_mode_at_40MHz           :1;
8237                 u16 psmp_support                :1;
8238                 u16 stbc_ctrl_frame_support     :1;
8239                 u16 sig_txop_protection_support :1;
8240         };
8241         u16 val;
8242 } __attribute__ ((packed));
8243
8244 union ht_param_info{
8245         struct {
8246                 u8 max_rx_ampdu_factor  :2;
8247                 u8 mpdu_density         :3;
8248                 u8 reserved             :3;
8249         };
8250         u8 val;
8251 } __attribute__ ((packed));
8252
8253 union ht_exra_param_info {
8254         struct {
8255                 u8 ext_chan_offset              :2;
8256                 u8 tx_chan_width                :1;
8257                 u8 rifs_mode                    :1;
8258                 u8 controlled_access_only       :1;
8259                 u8 service_interval_granularity :3;
8260         };
8261         u8 val;
8262 } __attribute__ ((packed));
8263
8264 union ht_operation_mode{
8265         struct {
8266                 u16 op_mode     :2;
8267                 u16 non_GF      :1;
8268                 u16 reserved    :13;
8269         };
8270         u16 val;
8271 } __attribute__ ((packed));
8272
8273
8274 static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8275                             struct ieee80211_ht_additional_info *ht_extra,
8276                             struct sta_ht_info *ht_info_ap,
8277                             struct sta_ht_info *ht_info)
8278 {
8279         union ht_cap_info cap;
8280         union ht_operation_mode op_mode;
8281         union ht_param_info param_info;
8282         union ht_exra_param_info extra_param_info;
8283
8284         IWL_DEBUG_MAC80211("enter: \n");
8285
8286         if (!ht_info) {
8287                 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8288                 return -1;
8289         }
8290
8291         if (ht_cap) {
8292                 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8293                 param_info.val = ht_cap->mac_ht_params_info;
8294                 ht_info->is_ht = 1;
8295                 if (cap.short_GI20)
8296                         ht_info->sgf |= 0x1;
8297                 if (cap.short_GI40)
8298                         ht_info->sgf |= 0x2;
8299                 ht_info->is_green_field = cap.green_field;
8300                 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8301                 ht_info->supported_chan_width = cap.supported_chan_width_set;
8302                 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8303                 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8304
8305                 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8306                 ht_info->mpdu_density = param_info.mpdu_density;
8307
8308                 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8309                                     ht_cap->supported_mcs_set[0],
8310                                     ht_cap->supported_mcs_set[1]);
8311
8312                 if (ht_info_ap) {
8313                         ht_info->control_channel = ht_info_ap->control_channel;
8314                         ht_info->extension_chan_offset =
8315                                 ht_info_ap->extension_chan_offset;
8316                         ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8317                         ht_info->operating_mode = ht_info_ap->operating_mode;
8318                 }
8319
8320                 if (ht_extra) {
8321                         extra_param_info.val = ht_extra->ht_param;
8322                         ht_info->control_channel = ht_extra->control_chan;
8323                         ht_info->extension_chan_offset =
8324                             extra_param_info.ext_chan_offset;
8325                         ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8326                         op_mode.val = (u16)
8327                             le16_to_cpu(ht_extra->operation_mode);
8328                         ht_info->operating_mode = op_mode.op_mode;
8329                         IWL_DEBUG_MAC80211("control channel %d\n",
8330                                             ht_extra->control_chan);
8331                 }
8332         } else
8333                 ht_info->is_ht = 0;
8334
8335         IWL_DEBUG_MAC80211("leave\n");
8336         return 0;
8337 }
8338
8339 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8340                            struct ieee80211_ht_capability *ht_cap,
8341                            struct ieee80211_ht_additional_info *ht_extra)
8342 {
8343         struct iwl4965_priv *priv = hw->priv;
8344         int rs;
8345
8346         IWL_DEBUG_MAC80211("enter: \n");
8347
8348         rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8349         iwl4965_set_rxon_chain(priv);
8350
8351         if (priv && priv->assoc_id &&
8352             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8353                 unsigned long flags;
8354
8355                 spin_lock_irqsave(&priv->lock, flags);
8356                 if (priv->beacon_int)
8357                         queue_work(priv->workqueue, &priv->post_associate.work);
8358                 else
8359                         priv->call_post_assoc_from_beacon = 1;
8360                 spin_unlock_irqrestore(&priv->lock, flags);
8361         }
8362
8363         IWL_DEBUG_MAC80211("leave: control channel %d\n",
8364                         ht_extra->control_chan);
8365         return rs;
8366
8367 }
8368
8369 static void iwl4965_set_ht_capab(struct ieee80211_hw *hw,
8370                              struct ieee80211_ht_capability *ht_cap,
8371                              u8 use_wide_chan)
8372 {
8373         union ht_cap_info cap;
8374         union ht_param_info param_info;
8375
8376         memset(&cap, 0, sizeof(union ht_cap_info));
8377         memset(&param_info, 0, sizeof(union ht_param_info));
8378
8379         cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8380         cap.green_field = 1;
8381         cap.short_GI20 = 1;
8382         cap.short_GI40 = 1;
8383         cap.supported_chan_width_set = use_wide_chan;
8384         cap.mimo_power_save_mode = 0x3;
8385
8386         param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8387         param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8388         ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8389         ht_cap->mac_ht_params_info = (u8) param_info.val;
8390
8391         ht_cap->supported_mcs_set[0] = 0xff;
8392         ht_cap->supported_mcs_set[1] = 0xff;
8393         ht_cap->supported_mcs_set[4] =
8394             (cap.supported_chan_width_set) ? 0x1: 0x0;
8395 }
8396
8397 static void iwl4965_mac_get_ht_capab(struct ieee80211_hw *hw,
8398                                  struct ieee80211_ht_capability *ht_cap)
8399 {
8400         u8 use_wide_channel = 1;
8401         struct iwl4965_priv *priv = hw->priv;
8402
8403         IWL_DEBUG_MAC80211("enter: \n");
8404         if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8405                 use_wide_channel = 0;
8406
8407         /* no fat tx allowed on 2.4GHZ */
8408         if (priv->phymode != MODE_IEEE80211A)
8409                 use_wide_channel = 0;
8410
8411         iwl4965_set_ht_capab(hw, ht_cap, use_wide_channel);
8412         IWL_DEBUG_MAC80211("leave: \n");
8413 }
8414 #endif /*CONFIG_IWL4965_HT*/
8415
8416 /*****************************************************************************
8417  *
8418  * sysfs attributes
8419  *
8420  *****************************************************************************/
8421
8422 #ifdef CONFIG_IWL4965_DEBUG
8423
8424 /*
8425  * The following adds a new attribute to the sysfs representation
8426  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8427  * used for controlling the debug level.
8428  *
8429  * See the level definitions in iwl for details.
8430  */
8431
8432 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8433 {
8434         return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8435 }
8436 static ssize_t store_debug_level(struct device_driver *d,
8437                                  const char *buf, size_t count)
8438 {
8439         char *p = (char *)buf;
8440         u32 val;
8441
8442         val = simple_strtoul(p, &p, 0);
8443         if (p == buf)
8444                 printk(KERN_INFO DRV_NAME
8445                        ": %s is not in hex or decimal form.\n", buf);
8446         else
8447                 iwl4965_debug_level = val;
8448
8449         return strnlen(buf, count);
8450 }
8451
8452 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8453                    show_debug_level, store_debug_level);
8454
8455 #endif /* CONFIG_IWL4965_DEBUG */
8456
8457 static ssize_t show_rf_kill(struct device *d,
8458                             struct device_attribute *attr, char *buf)
8459 {
8460         /*
8461          * 0 - RF kill not enabled
8462          * 1 - SW based RF kill active (sysfs)
8463          * 2 - HW based RF kill active
8464          * 3 - Both HW and SW based RF kill active
8465          */
8466         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8467         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8468                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8469
8470         return sprintf(buf, "%i\n", val);
8471 }
8472
8473 static ssize_t store_rf_kill(struct device *d,
8474                              struct device_attribute *attr,
8475                              const char *buf, size_t count)
8476 {
8477         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8478
8479         mutex_lock(&priv->mutex);
8480         iwl4965_radio_kill_sw(priv, buf[0] == '1');
8481         mutex_unlock(&priv->mutex);
8482
8483         return count;
8484 }
8485
8486 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8487
8488 static ssize_t show_temperature(struct device *d,
8489                                 struct device_attribute *attr, char *buf)
8490 {
8491         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8492
8493         if (!iwl4965_is_alive(priv))
8494                 return -EAGAIN;
8495
8496         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8497 }
8498
8499 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8500
8501 static ssize_t show_rs_window(struct device *d,
8502                               struct device_attribute *attr,
8503                               char *buf)
8504 {
8505         struct iwl4965_priv *priv = d->driver_data;
8506         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8507 }
8508 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8509
8510 static ssize_t show_tx_power(struct device *d,
8511                              struct device_attribute *attr, char *buf)
8512 {
8513         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8514         return sprintf(buf, "%d\n", priv->user_txpower_limit);
8515 }
8516
8517 static ssize_t store_tx_power(struct device *d,
8518                               struct device_attribute *attr,
8519                               const char *buf, size_t count)
8520 {
8521         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8522         char *p = (char *)buf;
8523         u32 val;
8524
8525         val = simple_strtoul(p, &p, 10);
8526         if (p == buf)
8527                 printk(KERN_INFO DRV_NAME
8528                        ": %s is not in decimal form.\n", buf);
8529         else
8530                 iwl4965_hw_reg_set_txpower(priv, val);
8531
8532         return count;
8533 }
8534
8535 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8536
8537 static ssize_t show_flags(struct device *d,
8538                           struct device_attribute *attr, char *buf)
8539 {
8540         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8541
8542         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8543 }
8544
8545 static ssize_t store_flags(struct device *d,
8546                            struct device_attribute *attr,
8547                            const char *buf, size_t count)
8548 {
8549         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8550         u32 flags = simple_strtoul(buf, NULL, 0);
8551
8552         mutex_lock(&priv->mutex);
8553         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8554                 /* Cancel any currently running scans... */
8555                 if (iwl4965_scan_cancel_timeout(priv, 100))
8556                         IWL_WARNING("Could not cancel scan.\n");
8557                 else {
8558                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8559                                        flags);
8560                         priv->staging_rxon.flags = cpu_to_le32(flags);
8561                         iwl4965_commit_rxon(priv);
8562                 }
8563         }
8564         mutex_unlock(&priv->mutex);
8565
8566         return count;
8567 }
8568
8569 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8570
8571 static ssize_t show_filter_flags(struct device *d,
8572                                  struct device_attribute *attr, char *buf)
8573 {
8574         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8575
8576         return sprintf(buf, "0x%04X\n",
8577                 le32_to_cpu(priv->active_rxon.filter_flags));
8578 }
8579
8580 static ssize_t store_filter_flags(struct device *d,
8581                                   struct device_attribute *attr,
8582                                   const char *buf, size_t count)
8583 {
8584         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8585         u32 filter_flags = simple_strtoul(buf, NULL, 0);
8586
8587         mutex_lock(&priv->mutex);
8588         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8589                 /* Cancel any currently running scans... */
8590                 if (iwl4965_scan_cancel_timeout(priv, 100))
8591                         IWL_WARNING("Could not cancel scan.\n");
8592                 else {
8593                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8594                                        "0x%04X\n", filter_flags);
8595                         priv->staging_rxon.filter_flags =
8596                                 cpu_to_le32(filter_flags);
8597                         iwl4965_commit_rxon(priv);
8598                 }
8599         }
8600         mutex_unlock(&priv->mutex);
8601
8602         return count;
8603 }
8604
8605 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8606                    store_filter_flags);
8607
8608 static ssize_t show_tune(struct device *d,
8609                          struct device_attribute *attr, char *buf)
8610 {
8611         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8612
8613         return sprintf(buf, "0x%04X\n",
8614                        (priv->phymode << 8) |
8615                         le16_to_cpu(priv->active_rxon.channel));
8616 }
8617
8618 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode);
8619
8620 static ssize_t store_tune(struct device *d,
8621                           struct device_attribute *attr,
8622                           const char *buf, size_t count)
8623 {
8624         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8625         char *p = (char *)buf;
8626         u16 tune = simple_strtoul(p, &p, 0);
8627         u8 phymode = (tune >> 8) & 0xff;
8628         u16 channel = tune & 0xff;
8629
8630         IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8631
8632         mutex_lock(&priv->mutex);
8633         if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8634             (priv->phymode != phymode)) {
8635                 const struct iwl4965_channel_info *ch_info;
8636
8637                 ch_info = iwl4965_get_channel_info(priv, phymode, channel);
8638                 if (!ch_info) {
8639                         IWL_WARNING("Requested invalid phymode/channel "
8640                                     "combination: %d %d\n", phymode, channel);
8641                         mutex_unlock(&priv->mutex);
8642                         return -EINVAL;
8643                 }
8644
8645                 /* Cancel any currently running scans... */
8646                 if (iwl4965_scan_cancel_timeout(priv, 100))
8647                         IWL_WARNING("Could not cancel scan.\n");
8648                 else {
8649                         IWL_DEBUG_INFO("Committing phymode and "
8650                                        "rxon.channel = %d %d\n",
8651                                        phymode, channel);
8652
8653                         iwl4965_set_rxon_channel(priv, phymode, channel);
8654                         iwl4965_set_flags_for_phymode(priv, phymode);
8655
8656                         iwl4965_set_rate(priv);
8657                         iwl4965_commit_rxon(priv);
8658                 }
8659         }
8660         mutex_unlock(&priv->mutex);
8661
8662         return count;
8663 }
8664
8665 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8666
8667 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8668
8669 static ssize_t show_measurement(struct device *d,
8670                                 struct device_attribute *attr, char *buf)
8671 {
8672         struct iwl4965_priv *priv = dev_get_drvdata(d);
8673         struct iwl4965_spectrum_notification measure_report;
8674         u32 size = sizeof(measure_report), len = 0, ofs = 0;
8675         u8 *data = (u8 *) & measure_report;
8676         unsigned long flags;
8677
8678         spin_lock_irqsave(&priv->lock, flags);
8679         if (!(priv->measurement_status & MEASUREMENT_READY)) {
8680                 spin_unlock_irqrestore(&priv->lock, flags);
8681                 return 0;
8682         }
8683         memcpy(&measure_report, &priv->measure_report, size);
8684         priv->measurement_status = 0;
8685         spin_unlock_irqrestore(&priv->lock, flags);
8686
8687         while (size && (PAGE_SIZE - len)) {
8688                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8689                                    PAGE_SIZE - len, 1);
8690                 len = strlen(buf);
8691                 if (PAGE_SIZE - len)
8692                         buf[len++] = '\n';
8693
8694                 ofs += 16;
8695                 size -= min(size, 16U);
8696         }
8697
8698         return len;
8699 }
8700
8701 static ssize_t store_measurement(struct device *d,
8702                                  struct device_attribute *attr,
8703                                  const char *buf, size_t count)
8704 {
8705         struct iwl4965_priv *priv = dev_get_drvdata(d);
8706         struct ieee80211_measurement_params params = {
8707                 .channel = le16_to_cpu(priv->active_rxon.channel),
8708                 .start_time = cpu_to_le64(priv->last_tsf),
8709                 .duration = cpu_to_le16(1),
8710         };
8711         u8 type = IWL_MEASURE_BASIC;
8712         u8 buffer[32];
8713         u8 channel;
8714
8715         if (count) {
8716                 char *p = buffer;
8717                 strncpy(buffer, buf, min(sizeof(buffer), count));
8718                 channel = simple_strtoul(p, NULL, 0);
8719                 if (channel)
8720                         params.channel = channel;
8721
8722                 p = buffer;
8723                 while (*p && *p != ' ')
8724                         p++;
8725                 if (*p)
8726                         type = simple_strtoul(p + 1, NULL, 0);
8727         }
8728
8729         IWL_DEBUG_INFO("Invoking measurement of type %d on "
8730                        "channel %d (for '%s')\n", type, params.channel, buf);
8731         iwl4965_get_measurement(priv, &params, type);
8732
8733         return count;
8734 }
8735
8736 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8737                    show_measurement, store_measurement);
8738 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8739
8740 static ssize_t store_retry_rate(struct device *d,
8741                                 struct device_attribute *attr,
8742                                 const char *buf, size_t count)
8743 {
8744         struct iwl4965_priv *priv = dev_get_drvdata(d);
8745
8746         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8747         if (priv->retry_rate <= 0)
8748                 priv->retry_rate = 1;
8749
8750         return count;
8751 }
8752
8753 static ssize_t show_retry_rate(struct device *d,
8754                                struct device_attribute *attr, char *buf)
8755 {
8756         struct iwl4965_priv *priv = dev_get_drvdata(d);
8757         return sprintf(buf, "%d", priv->retry_rate);
8758 }
8759
8760 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8761                    store_retry_rate);
8762
8763 static ssize_t store_power_level(struct device *d,
8764                                  struct device_attribute *attr,
8765                                  const char *buf, size_t count)
8766 {
8767         struct iwl4965_priv *priv = dev_get_drvdata(d);
8768         int rc;
8769         int mode;
8770
8771         mode = simple_strtoul(buf, NULL, 0);
8772         mutex_lock(&priv->mutex);
8773
8774         if (!iwl4965_is_ready(priv)) {
8775                 rc = -EAGAIN;
8776                 goto out;
8777         }
8778
8779         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8780                 mode = IWL_POWER_AC;
8781         else
8782                 mode |= IWL_POWER_ENABLED;
8783
8784         if (mode != priv->power_mode) {
8785                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8786                 if (rc) {
8787                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8788                         goto out;
8789                 }
8790                 priv->power_mode = mode;
8791         }
8792
8793         rc = count;
8794
8795  out:
8796         mutex_unlock(&priv->mutex);
8797         return rc;
8798 }
8799
8800 #define MAX_WX_STRING 80
8801
8802 /* Values are in microsecond */
8803 static const s32 timeout_duration[] = {
8804         350000,
8805         250000,
8806         75000,
8807         37000,
8808         25000,
8809 };
8810 static const s32 period_duration[] = {
8811         400000,
8812         700000,
8813         1000000,
8814         1000000,
8815         1000000
8816 };
8817
8818 static ssize_t show_power_level(struct device *d,
8819                                 struct device_attribute *attr, char *buf)
8820 {
8821         struct iwl4965_priv *priv = dev_get_drvdata(d);
8822         int level = IWL_POWER_LEVEL(priv->power_mode);
8823         char *p = buf;
8824
8825         p += sprintf(p, "%d ", level);
8826         switch (level) {
8827         case IWL_POWER_MODE_CAM:
8828         case IWL_POWER_AC:
8829                 p += sprintf(p, "(AC)");
8830                 break;
8831         case IWL_POWER_BATTERY:
8832                 p += sprintf(p, "(BATTERY)");
8833                 break;
8834         default:
8835                 p += sprintf(p,
8836                              "(Timeout %dms, Period %dms)",
8837                              timeout_duration[level - 1] / 1000,
8838                              period_duration[level - 1] / 1000);
8839         }
8840
8841         if (!(priv->power_mode & IWL_POWER_ENABLED))
8842                 p += sprintf(p, " OFF\n");
8843         else
8844                 p += sprintf(p, " \n");
8845
8846         return (p - buf + 1);
8847
8848 }
8849
8850 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8851                    store_power_level);
8852
8853 static ssize_t show_channels(struct device *d,
8854                              struct device_attribute *attr, char *buf)
8855 {
8856         struct iwl4965_priv *priv = dev_get_drvdata(d);
8857         int len = 0, i;
8858         struct ieee80211_channel *channels = NULL;
8859         const struct ieee80211_hw_mode *hw_mode = NULL;
8860         int count = 0;
8861
8862         if (!iwl4965_is_ready(priv))
8863                 return -EAGAIN;
8864
8865         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211G);
8866         if (!hw_mode)
8867                 hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211B);
8868         if (hw_mode) {
8869                 channels = hw_mode->channels;
8870                 count = hw_mode->num_channels;
8871         }
8872
8873         len +=
8874             sprintf(&buf[len],
8875                     "Displaying %d channels in 2.4GHz band "
8876                     "(802.11bg):\n", count);
8877
8878         for (i = 0; i < count; i++)
8879                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8880                                channels[i].chan,
8881                                channels[i].power_level,
8882                                channels[i].
8883                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8884                                " (IEEE 802.11h required)" : "",
8885                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8886                                 || (channels[i].
8887                                     flag &
8888                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8889                                ", IBSS",
8890                                channels[i].
8891                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8892                                "active/passive" : "passive only");
8893
8894         hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211A);
8895         if (hw_mode) {
8896                 channels = hw_mode->channels;
8897                 count = hw_mode->num_channels;
8898         } else {
8899                 channels = NULL;
8900                 count = 0;
8901         }
8902
8903         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8904                        "(802.11a):\n", count);
8905
8906         for (i = 0; i < count; i++)
8907                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8908                                channels[i].chan,
8909                                channels[i].power_level,
8910                                channels[i].
8911                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8912                                " (IEEE 802.11h required)" : "",
8913                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8914                                 || (channels[i].
8915                                     flag &
8916                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8917                                ", IBSS",
8918                                channels[i].
8919                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8920                                "active/passive" : "passive only");
8921
8922         return len;
8923 }
8924
8925 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8926
8927 static ssize_t show_statistics(struct device *d,
8928                                struct device_attribute *attr, char *buf)
8929 {
8930         struct iwl4965_priv *priv = dev_get_drvdata(d);
8931         u32 size = sizeof(struct iwl4965_notif_statistics);
8932         u32 len = 0, ofs = 0;
8933         u8 *data = (u8 *) & priv->statistics;
8934         int rc = 0;
8935
8936         if (!iwl4965_is_alive(priv))
8937                 return -EAGAIN;
8938
8939         mutex_lock(&priv->mutex);
8940         rc = iwl4965_send_statistics_request(priv);
8941         mutex_unlock(&priv->mutex);
8942
8943         if (rc) {
8944                 len = sprintf(buf,
8945                               "Error sending statistics request: 0x%08X\n", rc);
8946                 return len;
8947         }
8948
8949         while (size && (PAGE_SIZE - len)) {
8950                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8951                                    PAGE_SIZE - len, 1);
8952                 len = strlen(buf);
8953                 if (PAGE_SIZE - len)
8954                         buf[len++] = '\n';
8955
8956                 ofs += 16;
8957                 size -= min(size, 16U);
8958         }
8959
8960         return len;
8961 }
8962
8963 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8964
8965 static ssize_t show_antenna(struct device *d,
8966                             struct device_attribute *attr, char *buf)
8967 {
8968         struct iwl4965_priv *priv = dev_get_drvdata(d);
8969
8970         if (!iwl4965_is_alive(priv))
8971                 return -EAGAIN;
8972
8973         return sprintf(buf, "%d\n", priv->antenna);
8974 }
8975
8976 static ssize_t store_antenna(struct device *d,
8977                              struct device_attribute *attr,
8978                              const char *buf, size_t count)
8979 {
8980         int ant;
8981         struct iwl4965_priv *priv = dev_get_drvdata(d);
8982
8983         if (count == 0)
8984                 return 0;
8985
8986         if (sscanf(buf, "%1i", &ant) != 1) {
8987                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8988                 return count;
8989         }
8990
8991         if ((ant >= 0) && (ant <= 2)) {
8992                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8993                 priv->antenna = (enum iwl4965_antenna)ant;
8994         } else
8995                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8996
8997
8998         return count;
8999 }
9000
9001 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
9002
9003 static ssize_t show_status(struct device *d,
9004                            struct device_attribute *attr, char *buf)
9005 {
9006         struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
9007         if (!iwl4965_is_alive(priv))
9008                 return -EAGAIN;
9009         return sprintf(buf, "0x%08x\n", (int)priv->status);
9010 }
9011
9012 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
9013
9014 static ssize_t dump_error_log(struct device *d,
9015                               struct device_attribute *attr,
9016                               const char *buf, size_t count)
9017 {
9018         char *p = (char *)buf;
9019
9020         if (p[0] == '1')
9021                 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
9022
9023         return strnlen(buf, count);
9024 }
9025
9026 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
9027
9028 static ssize_t dump_event_log(struct device *d,
9029                               struct device_attribute *attr,
9030                               const char *buf, size_t count)
9031 {
9032         char *p = (char *)buf;
9033
9034         if (p[0] == '1')
9035                 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
9036
9037         return strnlen(buf, count);
9038 }
9039
9040 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
9041
9042 /*****************************************************************************
9043  *
9044  * driver setup and teardown
9045  *
9046  *****************************************************************************/
9047
9048 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
9049 {
9050         priv->workqueue = create_workqueue(DRV_NAME);
9051
9052         init_waitqueue_head(&priv->wait_command_queue);
9053
9054         INIT_WORK(&priv->up, iwl4965_bg_up);
9055         INIT_WORK(&priv->restart, iwl4965_bg_restart);
9056         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
9057         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
9058         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
9059         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
9060         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
9061         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
9062         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
9063         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
9064         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
9065         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
9066
9067         iwl4965_hw_setup_deferred_work(priv);
9068
9069         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
9070                      iwl4965_irq_tasklet, (unsigned long)priv);
9071 }
9072
9073 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
9074 {
9075         iwl4965_hw_cancel_deferred_work(priv);
9076
9077         cancel_delayed_work_sync(&priv->init_alive_start);
9078         cancel_delayed_work(&priv->scan_check);
9079         cancel_delayed_work(&priv->alive_start);
9080         cancel_delayed_work(&priv->post_associate);
9081         cancel_work_sync(&priv->beacon_update);
9082 }
9083
9084 static struct attribute *iwl4965_sysfs_entries[] = {
9085         &dev_attr_antenna.attr,
9086         &dev_attr_channels.attr,
9087         &dev_attr_dump_errors.attr,
9088         &dev_attr_dump_events.attr,
9089         &dev_attr_flags.attr,
9090         &dev_attr_filter_flags.attr,
9091 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
9092         &dev_attr_measurement.attr,
9093 #endif
9094         &dev_attr_power_level.attr,
9095         &dev_attr_retry_rate.attr,
9096         &dev_attr_rf_kill.attr,
9097         &dev_attr_rs_window.attr,
9098         &dev_attr_statistics.attr,
9099         &dev_attr_status.attr,
9100         &dev_attr_temperature.attr,
9101         &dev_attr_tune.attr,
9102         &dev_attr_tx_power.attr,
9103
9104         NULL
9105 };
9106
9107 static struct attribute_group iwl4965_attribute_group = {
9108         .name = NULL,           /* put in device directory */
9109         .attrs = iwl4965_sysfs_entries,
9110 };
9111
9112 static struct ieee80211_ops iwl4965_hw_ops = {
9113         .tx = iwl4965_mac_tx,
9114         .start = iwl4965_mac_start,
9115         .stop = iwl4965_mac_stop,
9116         .add_interface = iwl4965_mac_add_interface,
9117         .remove_interface = iwl4965_mac_remove_interface,
9118         .config = iwl4965_mac_config,
9119         .config_interface = iwl4965_mac_config_interface,
9120         .configure_filter = iwl4965_configure_filter,
9121         .set_key = iwl4965_mac_set_key,
9122         .get_stats = iwl4965_mac_get_stats,
9123         .get_tx_stats = iwl4965_mac_get_tx_stats,
9124         .conf_tx = iwl4965_mac_conf_tx,
9125         .get_tsf = iwl4965_mac_get_tsf,
9126         .reset_tsf = iwl4965_mac_reset_tsf,
9127         .beacon_update = iwl4965_mac_beacon_update,
9128         .erp_ie_changed = iwl4965_mac_erp_ie_changed,
9129 #ifdef CONFIG_IWL4965_HT
9130         .conf_ht = iwl4965_mac_conf_ht,
9131         .get_ht_capab = iwl4965_mac_get_ht_capab,
9132 #ifdef CONFIG_IWL4965_HT_AGG
9133         .ht_tx_agg_start = iwl4965_mac_ht_tx_agg_start,
9134         .ht_tx_agg_stop = iwl4965_mac_ht_tx_agg_stop,
9135         .ht_rx_agg_start = iwl4965_mac_ht_rx_agg_start,
9136         .ht_rx_agg_stop = iwl4965_mac_ht_rx_agg_stop,
9137 #endif  /* CONFIG_IWL4965_HT_AGG */
9138 #endif  /* CONFIG_IWL4965_HT */
9139         .hw_scan = iwl4965_mac_hw_scan
9140 };
9141
9142 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9143 {
9144         int err = 0;
9145         struct iwl4965_priv *priv;
9146         struct ieee80211_hw *hw;
9147         int i;
9148
9149         /* Disabling hardware scan means that mac80211 will perform scans
9150          * "the hard way", rather than using device's scan. */
9151         if (iwl4965_param_disable_hw_scan) {
9152                 IWL_DEBUG_INFO("Disabling hw_scan\n");
9153                 iwl4965_hw_ops.hw_scan = NULL;
9154         }
9155
9156         if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
9157             (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
9158                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
9159                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
9160                 err = -EINVAL;
9161                 goto out;
9162         }
9163
9164         /* mac80211 allocates memory for this device instance, including
9165          *   space for this driver's private structure */
9166         hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
9167         if (hw == NULL) {
9168                 IWL_ERROR("Can not allocate network device\n");
9169                 err = -ENOMEM;
9170                 goto out;
9171         }
9172         SET_IEEE80211_DEV(hw, &pdev->dev);
9173
9174         hw->rate_control_algorithm = "iwl-4965-rs";
9175
9176         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
9177         priv = hw->priv;
9178         priv->hw = hw;
9179
9180         priv->pci_dev = pdev;
9181         priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
9182 #ifdef CONFIG_IWL4965_DEBUG
9183         iwl4965_debug_level = iwl4965_param_debug;
9184         atomic_set(&priv->restrict_refcnt, 0);
9185 #endif
9186         priv->retry_rate = 1;
9187
9188         priv->ibss_beacon = NULL;
9189
9190         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
9191          *   the range of signal quality values that we'll provide.
9192          * Negative values for level/noise indicate that we'll provide dBm.
9193          * For WE, at least, non-0 values here *enable* display of values
9194          *   in app (iwconfig). */
9195         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
9196         hw->max_noise = -20;    /* noise level, negative indicates dBm */
9197         hw->max_signal = 100;   /* link quality indication (%) */
9198
9199         /* Tell mac80211 our Tx characteristics */
9200         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
9201
9202         /* Default value; 4 EDCA QOS priorities */
9203         hw->queues = 4;
9204 #ifdef CONFIG_IWL4965_HT
9205 #ifdef CONFIG_IWL4965_HT_AGG
9206         /* Enhanced value; more queues, to support 11n aggregation */
9207         hw->queues = 16;
9208 #endif /* CONFIG_IWL4965_HT_AGG */
9209 #endif /* CONFIG_IWL4965_HT */
9210
9211         spin_lock_init(&priv->lock);
9212         spin_lock_init(&priv->power_data.lock);
9213         spin_lock_init(&priv->sta_lock);
9214         spin_lock_init(&priv->hcmd_lock);
9215         spin_lock_init(&priv->lq_mngr.lock);
9216
9217         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9218                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9219
9220         INIT_LIST_HEAD(&priv->free_frames);
9221
9222         mutex_init(&priv->mutex);
9223         if (pci_enable_device(pdev)) {
9224                 err = -ENODEV;
9225                 goto out_ieee80211_free_hw;
9226         }
9227
9228         pci_set_master(pdev);
9229
9230         /* Clear the driver's (not device's) station table */
9231         iwl4965_clear_stations_table(priv);
9232
9233         priv->data_retry_limit = -1;
9234         priv->ieee_channels = NULL;
9235         priv->ieee_rates = NULL;
9236         priv->phymode = -1;
9237
9238         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9239         if (!err)
9240                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9241         if (err) {
9242                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9243                 goto out_pci_disable_device;
9244         }
9245
9246         pci_set_drvdata(pdev, priv);
9247         err = pci_request_regions(pdev, DRV_NAME);
9248         if (err)
9249                 goto out_pci_disable_device;
9250
9251         /* We disable the RETRY_TIMEOUT register (0x41) to keep
9252          * PCI Tx retries from interfering with C3 CPU state */
9253         pci_write_config_byte(pdev, 0x41, 0x00);
9254
9255         priv->hw_base = pci_iomap(pdev, 0, 0);
9256         if (!priv->hw_base) {
9257                 err = -ENODEV;
9258                 goto out_pci_release_regions;
9259         }
9260
9261         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9262                         (unsigned long long) pci_resource_len(pdev, 0));
9263         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9264
9265         /* Initialize module parameter values here */
9266
9267         /* Disable radio (SW RF KILL) via parameter when loading driver */
9268         if (iwl4965_param_disable) {
9269                 set_bit(STATUS_RF_KILL_SW, &priv->status);
9270                 IWL_DEBUG_INFO("Radio disabled.\n");
9271         }
9272
9273         priv->iw_mode = IEEE80211_IF_TYPE_STA;
9274
9275         priv->ps_mode = 0;
9276         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9277         priv->is_ht_enabled = 1;
9278         priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9279         priv->valid_antenna = 0x7;      /* assume all 3 connected */
9280         priv->ps_mode = IWL_MIMO_PS_NONE;
9281
9282         /* Choose which receivers/antennas to use */
9283         iwl4965_set_rxon_chain(priv);
9284
9285         printk(KERN_INFO DRV_NAME
9286                ": Detected Intel Wireless WiFi Link 4965AGN\n");
9287
9288         /* Device-specific setup */
9289         if (iwl4965_hw_set_hw_setting(priv)) {
9290                 IWL_ERROR("failed to set hw settings\n");
9291                 mutex_unlock(&priv->mutex);
9292                 goto out_iounmap;
9293         }
9294
9295 #ifdef CONFIG_IWL4965_QOS
9296         if (iwl4965_param_qos_enable)
9297                 priv->qos_data.qos_enable = 1;
9298
9299         iwl4965_reset_qos(priv);
9300
9301         priv->qos_data.qos_active = 0;
9302         priv->qos_data.qos_cap.val = 0;
9303 #endif /* CONFIG_IWL4965_QOS */
9304
9305         iwl4965_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9306         iwl4965_setup_deferred_work(priv);
9307         iwl4965_setup_rx_handlers(priv);
9308
9309         priv->rates_mask = IWL_RATES_MASK;
9310         /* If power management is turned on, default to AC mode */
9311         priv->power_mode = IWL_POWER_AC;
9312         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9313
9314         iwl4965_disable_interrupts(priv);
9315
9316         pci_enable_msi(pdev);
9317
9318         err = request_irq(pdev->irq, iwl4965_isr, IRQF_SHARED, DRV_NAME, priv);
9319         if (err) {
9320                 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9321                 goto out_disable_msi;
9322         }
9323
9324         mutex_lock(&priv->mutex);
9325
9326         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9327         if (err) {
9328                 IWL_ERROR("failed to create sysfs device attributes\n");
9329                 mutex_unlock(&priv->mutex);
9330                 goto out_release_irq;
9331         }
9332
9333         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9334          * ucode filename and max sizes are card-specific. */
9335         err = iwl4965_read_ucode(priv);
9336         if (err) {
9337                 IWL_ERROR("Could not read microcode: %d\n", err);
9338                 mutex_unlock(&priv->mutex);
9339                 goto out_pci_alloc;
9340         }
9341
9342         mutex_unlock(&priv->mutex);
9343
9344         IWL_DEBUG_INFO("Queueing UP work.\n");
9345
9346         queue_work(priv->workqueue, &priv->up);
9347
9348         return 0;
9349
9350  out_pci_alloc:
9351         iwl4965_dealloc_ucode_pci(priv);
9352
9353         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9354
9355  out_release_irq:
9356         free_irq(pdev->irq, priv);
9357
9358  out_disable_msi:
9359         pci_disable_msi(pdev);
9360         destroy_workqueue(priv->workqueue);
9361         priv->workqueue = NULL;
9362         iwl4965_unset_hw_setting(priv);
9363
9364  out_iounmap:
9365         pci_iounmap(pdev, priv->hw_base);
9366  out_pci_release_regions:
9367         pci_release_regions(pdev);
9368  out_pci_disable_device:
9369         pci_disable_device(pdev);
9370         pci_set_drvdata(pdev, NULL);
9371  out_ieee80211_free_hw:
9372         ieee80211_free_hw(priv->hw);
9373  out:
9374         return err;
9375 }
9376
9377 static void iwl4965_pci_remove(struct pci_dev *pdev)
9378 {
9379         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9380         struct list_head *p, *q;
9381         int i;
9382
9383         if (!priv)
9384                 return;
9385
9386         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9387
9388         set_bit(STATUS_EXIT_PENDING, &priv->status);
9389
9390         iwl4965_down(priv);
9391
9392         /* Free MAC hash list for ADHOC */
9393         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9394                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9395                         list_del(p);
9396                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9397                 }
9398         }
9399
9400         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9401
9402         iwl4965_dealloc_ucode_pci(priv);
9403
9404         if (priv->rxq.bd)
9405                 iwl4965_rx_queue_free(priv, &priv->rxq);
9406         iwl4965_hw_txq_ctx_free(priv);
9407
9408         iwl4965_unset_hw_setting(priv);
9409         iwl4965_clear_stations_table(priv);
9410
9411         if (priv->mac80211_registered) {
9412                 ieee80211_unregister_hw(priv->hw);
9413                 iwl4965_rate_control_unregister(priv->hw);
9414         }
9415
9416         /*netif_stop_queue(dev); */
9417         flush_workqueue(priv->workqueue);
9418
9419         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9420          * priv->workqueue... so we can't take down the workqueue
9421          * until now... */
9422         destroy_workqueue(priv->workqueue);
9423         priv->workqueue = NULL;
9424
9425         free_irq(pdev->irq, priv);
9426         pci_disable_msi(pdev);
9427         pci_iounmap(pdev, priv->hw_base);
9428         pci_release_regions(pdev);
9429         pci_disable_device(pdev);
9430         pci_set_drvdata(pdev, NULL);
9431
9432         kfree(priv->channel_info);
9433
9434         kfree(priv->ieee_channels);
9435         kfree(priv->ieee_rates);
9436
9437         if (priv->ibss_beacon)
9438                 dev_kfree_skb(priv->ibss_beacon);
9439
9440         ieee80211_free_hw(priv->hw);
9441 }
9442
9443 #ifdef CONFIG_PM
9444
9445 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9446 {
9447         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9448
9449         set_bit(STATUS_IN_SUSPEND, &priv->status);
9450
9451         /* Take down the device; powers it off, etc. */
9452         iwl4965_down(priv);
9453
9454         if (priv->mac80211_registered)
9455                 ieee80211_stop_queues(priv->hw);
9456
9457         pci_save_state(pdev);
9458         pci_disable_device(pdev);
9459         pci_set_power_state(pdev, PCI_D3hot);
9460
9461         return 0;
9462 }
9463
9464 static void iwl4965_resume(struct iwl4965_priv *priv)
9465 {
9466         unsigned long flags;
9467
9468         /* The following it a temporary work around due to the
9469          * suspend / resume not fully initializing the NIC correctly.
9470          * Without all of the following, resume will not attempt to take
9471          * down the NIC (it shouldn't really need to) and will just try
9472          * and bring the NIC back up.  However that fails during the
9473          * ucode verification process.  This then causes iwl4965_down to be
9474          * called *after* iwl4965_hw_nic_init() has succeeded -- which
9475          * then lets the next init sequence succeed.  So, we've
9476          * replicated all of that NIC init code here... */
9477
9478         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9479
9480         iwl4965_hw_nic_init(priv);
9481
9482         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9483         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9484                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9485         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
9486         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9487         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9488
9489         /* tell the device to stop sending interrupts */
9490         iwl4965_disable_interrupts(priv);
9491
9492         spin_lock_irqsave(&priv->lock, flags);
9493         iwl4965_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9494
9495         if (!iwl4965_grab_nic_access(priv)) {
9496                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
9497                                 APMG_CLK_VAL_DMA_CLK_RQT);
9498                 iwl4965_release_nic_access(priv);
9499         }
9500         spin_unlock_irqrestore(&priv->lock, flags);
9501
9502         udelay(5);
9503
9504         iwl4965_hw_nic_reset(priv);
9505
9506         /* Bring the device back up */
9507         clear_bit(STATUS_IN_SUSPEND, &priv->status);
9508         queue_work(priv->workqueue, &priv->up);
9509 }
9510
9511 static int iwl4965_pci_resume(struct pci_dev *pdev)
9512 {
9513         struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9514         int err;
9515
9516         printk(KERN_INFO "Coming out of suspend...\n");
9517
9518         pci_set_power_state(pdev, PCI_D0);
9519         err = pci_enable_device(pdev);
9520         pci_restore_state(pdev);
9521
9522         /*
9523          * Suspend/Resume resets the PCI configuration space, so we have to
9524          * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9525          * from interfering with C3 CPU state. pci_restore_state won't help
9526          * here since it only restores the first 64 bytes pci config header.
9527          */
9528         pci_write_config_byte(pdev, 0x41, 0x00);
9529
9530         iwl4965_resume(priv);
9531
9532         return 0;
9533 }
9534
9535 #endif /* CONFIG_PM */
9536
9537 /*****************************************************************************
9538  *
9539  * driver and module entry point
9540  *
9541  *****************************************************************************/
9542
9543 static struct pci_driver iwl4965_driver = {
9544         .name = DRV_NAME,
9545         .id_table = iwl4965_hw_card_ids,
9546         .probe = iwl4965_pci_probe,
9547         .remove = __devexit_p(iwl4965_pci_remove),
9548 #ifdef CONFIG_PM
9549         .suspend = iwl4965_pci_suspend,
9550         .resume = iwl4965_pci_resume,
9551 #endif
9552 };
9553
9554 static int __init iwl4965_init(void)
9555 {
9556
9557         int ret;
9558         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9559         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9560         ret = pci_register_driver(&iwl4965_driver);
9561         if (ret) {
9562                 IWL_ERROR("Unable to initialize PCI module\n");
9563                 return ret;
9564         }
9565 #ifdef CONFIG_IWL4965_DEBUG
9566         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9567         if (ret) {
9568                 IWL_ERROR("Unable to create driver sysfs file\n");
9569                 pci_unregister_driver(&iwl4965_driver);
9570                 return ret;
9571         }
9572 #endif
9573
9574         return ret;
9575 }
9576
9577 static void __exit iwl4965_exit(void)
9578 {
9579 #ifdef CONFIG_IWL4965_DEBUG
9580         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9581 #endif
9582         pci_unregister_driver(&iwl4965_driver);
9583 }
9584
9585 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9586 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9587 module_param_named(disable, iwl4965_param_disable, int, 0444);
9588 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9589 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9590 MODULE_PARM_DESC(hwcrypto,
9591                  "using hardware crypto engine (default 0 [software])\n");
9592 module_param_named(debug, iwl4965_param_debug, int, 0444);
9593 MODULE_PARM_DESC(debug, "debug output mask");
9594 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9595 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9596
9597 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9598 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9599
9600 /* QoS */
9601 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9602 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9603
9604 module_exit(iwl4965_exit);
9605 module_init(iwl4965_init);