Pileus Git - ~andy/linux/blob - drivers/net/wireless/iwlwifi/iwl3945-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-3945.h"
  50 #include "iwl-helpers.h"
  51
  52 #ifdef CONFIG_IWL3945_DEBUG
  53 u32 iwl3945_debug_level;
  54 #endif
  55
  56 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
  57                                   struct iwl3945_tx_queue *txq);
  58
  59 /******************************************************************************
  60  *
  61  * module boiler plate
  62  *
  63  ******************************************************************************/
  64
  65 /* module parameters */
  66 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
  67 static int iwl3945_param_debug;    /* def: 0 = minimal debug log messages */
  68 static int iwl3945_param_disable;  /* def: 0 = enable radio */
  69 static int iwl3945_param_antenna;  /* def: 0 = both antennas (use diversity) */
  70 int iwl3945_param_hwcrypto;        /* def: 0 = use software encryption */
  71 static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
  72 int iwl3945_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 8 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 \
  80 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  81
  82 #ifdef CONFIG_IWL3945_DEBUG
  83 #define VD "d"
  84 #else
  85 #define VD
  86 #endif
  87
  88 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  89 #define VS "s"
  90 #else
  91 #define VS
  92 #endif
  93
  94 #define IWLWIFI_VERSION "1.1.19k" VD VS
  95 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
  96 #define DRV_VERSION     IWLWIFI_VERSION
  97
  98 /* Change firmware file name, using "-" and incrementing number,
  99  *   *only* when uCode interface or architecture changes so that it
 100  *   is not compatible with earlier drivers.
 101  * This number will also appear in << 8 position of 1st dword of uCode file */
 102 #define IWL3945_UCODE_API "-1"
 103
 104 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 105 MODULE_VERSION(DRV_VERSION);
 106 MODULE_AUTHOR(DRV_COPYRIGHT);
 107 MODULE_LICENSE("GPL");
 108
 109 static __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
 110 {
 111         u16 fc = le16_to_cpu(hdr->frame_control);
 112         int hdr_len = ieee80211_get_hdrlen(fc);
 113
 114         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 115                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 116         return NULL;
 117 }
 118
 119 static const struct ieee80211_hw_mode *iwl3945_get_hw_mode(
 120                 struct iwl3945_priv *priv, int mode)
 121 {
 122         int i;
 123
 124         for (i = 0; i < 3; i++)
 125                 if (priv->modes[i].mode == mode)
 126                         return &priv->modes[i];
 127
 128         return NULL;
 129 }
 130
 131 static int iwl3945_is_empty_essid(const char *essid, int essid_len)
 132 {
 133         /* Single white space is for Linksys APs */
 134         if (essid_len == 1 && essid[0] == ' ')
 135                 return 1;
 136
 137         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 138         while (essid_len) {
 139                 essid_len--;
 140                 if (essid[essid_len] != '\0')
 141                         return 0;
 142         }
 143
 144         return 1;
 145 }
 146
 147 static const char *iwl3945_escape_essid(const char *essid, u8 essid_len)
 148 {
 149         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 150         const char *s = essid;
 151         char *d = escaped;
 152
 153         if (iwl3945_is_empty_essid(essid, essid_len)) {
 154                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 155                 return escaped;
 156         }
 157
 158         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 159         while (essid_len--) {
 160                 if (*s == '\0') {
 161                         *d++ = '\\';
 162                         *d++ = '0';
 163                         s++;
 164                 } else
 165                         *d++ = *s++;
 166         }
 167         *d = '\0';
 168         return escaped;
 169 }
 170
 171 static void iwl3945_print_hex_dump(int level, void *p, u32 len)
 172 {
 173 #ifdef CONFIG_IWL3945_DEBUG
 174         if (!(iwl3945_debug_level & level))
 175                 return;
 176
 177         print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
 178                         p, len, 1);
 179 #endif
 180 }
 181
 182 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 183  * DMA services
 184  *
 185  * Theory of operation
 186  *
 187  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 188  * of buffer descriptors, each of which points to one or more data buffers for
 189  * the device to read from or fill.  Driver and device exchange status of each
 190  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 191  * entries in each circular buffer, to protect against confusing empty and full
 192  * queue states.
 193  *
 194  * The device reads or writes the data in the queues via the device's several
 195  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 196  *
 197  * For Tx queue, there are low mark and high mark limits. If, after queuing
 198  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 199  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 200  * Tx queue resumed.
 201  *
 202  * The 3945 operates with six queues:  One receive queue, one transmit queue
 203  * (#4) for sending commands to the device firmware, and four transmit queues
 204  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 205  ***************************************************/
 206
 207 static int iwl3945_queue_space(const struct iwl3945_queue *q)
 208 {
 209         int s = q->read_ptr - q->write_ptr;
 210
 211         if (q->read_ptr > q->write_ptr)
 212                 s -= q->n_bd;
 213
 214         if (s <= 0)
 215                 s += q->n_window;
 216         /* keep some reserve to not confuse empty and full situations */
 217         s -= 2;
 218         if (s < 0)
 219                 s = 0;
 220         return s;
 221 }
 222
 223 /**
 224  * iwl3945_queue_inc_wrap - increment queue index, wrap back to beginning
 225  * @index -- current index
 226  * @n_bd -- total number of entries in queue (must be power of 2)
 227  */
 228 static inline int iwl3945_queue_inc_wrap(int index, int n_bd)
 229 {
 230         return ++index & (n_bd - 1);
 231 }
 232
 233 /**
 234  * iwl3945_queue_dec_wrap - increment queue index, wrap back to end
 235  * @index -- current index
 236  * @n_bd -- total number of entries in queue (must be power of 2)
 237  */
 238 static inline int iwl3945_queue_dec_wrap(int index, int n_bd)
 239 {
 240         return --index & (n_bd - 1);
 241 }
 242
 243 static inline int x2_queue_used(const struct iwl3945_queue *q, int i)
 244 {
 245         return q->write_ptr > q->read_ptr ?
 246                 (i >= q->read_ptr && i < q->write_ptr) :
 247                 !(i < q->read_ptr && i >= q->write_ptr);
 248 }
 249
 250 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
 251 {
 252         /* This is for scan command, the big buffer at end of command array */
 253         if (is_huge)
 254                 return q->n_window;     /* must be power of 2 */
 255
 256         /* Otherwise, use normal size buffers */
 257         return index & (q->n_window - 1);
 258 }
 259
 260 /**
 261  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 262  */
 263 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
 264                           int count, int slots_num, u32 id)
 265 {
 266         q->n_bd = count;
 267         q->n_window = slots_num;
 268         q->id = id;
 269
 270         /* count must be power-of-two size, otherwise iwl3945_queue_inc_wrap
 271          * and iwl3945_queue_dec_wrap are broken. */
 272         BUG_ON(!is_power_of_2(count));
 273
 274         /* slots_num must be power-of-two size, otherwise
 275          * get_cmd_index is broken. */
 276         BUG_ON(!is_power_of_2(slots_num));
 277
 278         q->low_mark = q->n_window / 4;
 279         if (q->low_mark < 4)
 280                 q->low_mark = 4;
 281
 282         q->high_mark = q->n_window / 8;
 283         if (q->high_mark < 2)
 284                 q->high_mark = 2;
 285
 286         q->write_ptr = q->read_ptr = 0;
 287
 288         return 0;
 289 }
 290
 291 /**
 292  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 293  */
 294 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
 295                               struct iwl3945_tx_queue *txq, u32 id)
 296 {
 297         struct pci_dev *dev = priv->pci_dev;
 298
 299         /* Driver private data, only for Tx (not command) queues,
 300          * not shared with device. */
 301         if (id != IWL_CMD_QUEUE_NUM) {
 302                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 303                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 304                 if (!txq->txb) {
 305                         IWL_ERROR("kmalloc for auxiliary BD "
 306                                   "structures failed\n");
 307                         goto error;
 308                 }
 309         } else
 310                 txq->txb = NULL;
 311
 312         /* Circular buffer of transmit frame descriptors (TFDs),
 313          * shared with device */
 314         txq->bd = pci_alloc_consistent(dev,
 315                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 316                         &txq->q.dma_addr);
 317
 318         if (!txq->bd) {
 319                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 320                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 321                 goto error;
 322         }
 323         txq->q.id = id;
 324
 325         return 0;
 326
 327  error:
 328         if (txq->txb) {
 329                 kfree(txq->txb);
 330                 txq->txb = NULL;
 331         }
 332
 333         return -ENOMEM;
 334 }
 335
 336 /**
 337  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 338  */
 339 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
 340                       struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
 341 {
 342         struct pci_dev *dev = priv->pci_dev;
 343         int len;
 344         int rc = 0;
 345
 346         /*
 347          * Alloc buffer array for commands (Tx or other types of commands).
 348          * For the command queue (#4), allocate command space + one big
 349          * command for scan, since scan command is very huge; the system will
 350          * not have two scans at the same time, so only one is needed.
 351          * For data Tx queues (all other queues), no super-size command
 352          * space is needed.
 353          */
 354         len = sizeof(struct iwl3945_cmd) * slots_num;
 355         if (txq_id == IWL_CMD_QUEUE_NUM)
 356                 len +=  IWL_MAX_SCAN_SIZE;
 357         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 358         if (!txq->cmd)
 359                 return -ENOMEM;
 360
 361         /* Alloc driver data array and TFD circular buffer */
 362         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 363         if (rc) {
 364                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 365
 366                 return -ENOMEM;
 367         }
 368         txq->need_update = 0;
 369
 370         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 371          * iwl3945_queue_inc_wrap and iwl3945_queue_dec_wrap are broken. */
 372         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 373
 374         /* Initialize queue high/low-water, head/tail indexes */
 375         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 376
 377         /* Tell device where to find queue, enable DMA channel. */
 378         iwl3945_hw_tx_queue_init(priv, txq);
 379
 380         return 0;
 381 }
 382
 383 /**
 384  * iwl3945_tx_queue_free - Deallocate DMA queue.
 385  * @txq: Transmit queue to deallocate.
 386  *
 387  * Empty queue by removing and destroying all BD's.
 388  * Free all buffers.
 389  * 0-fill, but do not free "txq" descriptor structure.
 390  */
 391 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
 392 {
 393         struct iwl3945_queue *q = &txq->q;
 394         struct pci_dev *dev = priv->pci_dev;
 395         int len;
 396
 397         if (q->n_bd == 0)
 398                 return;
 399
 400         /* first, empty all BD's */
 401         for (; q->write_ptr != q->read_ptr;
 402              q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd))
 403                 iwl3945_hw_txq_free_tfd(priv, txq);
 404
 405         len = sizeof(struct iwl3945_cmd) * q->n_window;
 406         if (q->id == IWL_CMD_QUEUE_NUM)
 407                 len += IWL_MAX_SCAN_SIZE;
 408
 409         /* De-alloc array of command/tx buffers */
 410         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 411
 412         /* De-alloc circular buffer of TFDs */
 413         if (txq->q.n_bd)
 414                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
 415                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 416
 417         /* De-alloc array of per-TFD driver data */
 418         if (txq->txb) {
 419                 kfree(txq->txb);
 420                 txq->txb = NULL;
 421         }
 422
 423         /* 0-fill queue descriptor structure */
 424         memset(txq, 0, sizeof(*txq));
 425 }
 426
 427 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 428
 429 /*************** STATION TABLE MANAGEMENT ****
 430  * mac80211 should be examined to determine if sta_info is duplicating
 431  * the functionality provided here
 432  */
 433
 434 /**************************************************************/
 435 #if 0 /* temporary disable till we add real remove station */
 436 /**
 437  * iwl3945_remove_station - Remove driver's knowledge of station.
 438  *
 439  * NOTE:  This does not remove station from device's station table.
 440  */
 441 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
 442 {
 443         int index = IWL_INVALID_STATION;
 444         int i;
 445         unsigned long flags;
 446
 447         spin_lock_irqsave(&priv->sta_lock, flags);
 448
 449         if (is_ap)
 450                 index = IWL_AP_ID;
 451         else if (is_broadcast_ether_addr(addr))
 452                 index = priv->hw_setting.bcast_sta_id;
 453         else
 454                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 455                         if (priv->stations[i].used &&
 456                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 457                                                 addr)) {
 458                                 index = i;
 459                                 break;
 460                         }
 461
 462         if (unlikely(index == IWL_INVALID_STATION))
 463                 goto out;
 464
 465         if (priv->stations[index].used) {
 466                 priv->stations[index].used = 0;
 467                 priv->num_stations--;
 468         }
 469
 470         BUG_ON(priv->num_stations < 0);
 471
 472 out:
 473         spin_unlock_irqrestore(&priv->sta_lock, flags);
 474         return 0;
 475 }
 476 #endif
 477
 478 /**
 479  * iwl3945_clear_stations_table - Clear the driver's station table
 480  *
 481  * NOTE:  This does not clear or otherwise alter the device's station table.
 482  */
 483 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
 484 {
 485         unsigned long flags;
 486
 487         spin_lock_irqsave(&priv->sta_lock, flags);
 488
 489         priv->num_stations = 0;
 490         memset(priv->stations, 0, sizeof(priv->stations));
 491
 492         spin_unlock_irqrestore(&priv->sta_lock, flags);
 493 }
 494
 495 /**
 496  * iwl3945_add_station - Add station to station tables in driver and device
 497  */
 498 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
 499 {
 500         int i;
 501         int index = IWL_INVALID_STATION;
 502         struct iwl3945_station_entry *station;
 503         unsigned long flags_spin;
 504         DECLARE_MAC_BUF(mac);
 505         u8 rate;
 506
 507         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 508         if (is_ap)
 509                 index = IWL_AP_ID;
 510         else if (is_broadcast_ether_addr(addr))
 511                 index = priv->hw_setting.bcast_sta_id;
 512         else
 513                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 514                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 515                                                 addr)) {
 516                                 index = i;
 517                                 break;
 518                         }
 519
 520                         if (!priv->stations[i].used &&
 521                             index == IWL_INVALID_STATION)
 522                                 index = i;
 523                 }
 524
 525         /* These two conditions has the same outcome but keep them separate
 526           since they have different meaning */
 527         if (unlikely(index == IWL_INVALID_STATION)) {
 528                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 529                 return index;
 530         }
 531
 532         if (priv->stations[index].used &&
 533            !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 534                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 535                 return index;
 536         }
 537
 538         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 539         station = &priv->stations[index];
 540         station->used = 1;
 541         priv->num_stations++;
 542
 543         /* Set up the REPLY_ADD_STA command to send to device */
 544         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 545         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 546         station->sta.mode = 0;
 547         station->sta.sta.sta_id = index;
 548         station->sta.station_flags = 0;
 549
 550         if (priv->phymode == MODE_IEEE80211A)
 551                 rate = IWL_RATE_6M_PLCP;
 552         else
 553                 rate =  IWL_RATE_1M_PLCP;
 554
 555         /* Turn on both antennas for the station... */
 556         station->sta.rate_n_flags =
 557                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 558         station->current_rate.rate_n_flags =
 559                         le16_to_cpu(station->sta.rate_n_flags);
 560
 561         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 562
 563         /* Add station to device's station table */
 564         iwl3945_send_add_station(priv, &station->sta, flags);
 565         return index;
 566
 567 }
 568
 569 /*************** DRIVER STATUS FUNCTIONS   *****/
 570
 571 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
 572 {
 573         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 574          * set but EXIT_PENDING is not */
 575         return test_bit(STATUS_READY, &priv->status) &&
 576                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 577                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 578 }
 579
 580 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
 581 {
 582         return test_bit(STATUS_ALIVE, &priv->status);
 583 }
 584
 585 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
 586 {
 587         return test_bit(STATUS_INIT, &priv->status);
 588 }
 589
 590 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
 591 {
 592         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 593                test_bit(STATUS_RF_KILL_SW, &priv->status);
 594 }
 595
 596 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
 597 {
 598
 599         if (iwl3945_is_rfkill(priv))
 600                 return 0;
 601
 602         return iwl3945_is_ready(priv);
 603 }
 604
 605 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 606
 607 #define IWL_CMD(x) case x : return #x
 608
 609 static const char *get_cmd_string(u8 cmd)
 610 {
 611         switch (cmd) {
 612                 IWL_CMD(REPLY_ALIVE);
 613                 IWL_CMD(REPLY_ERROR);
 614                 IWL_CMD(REPLY_RXON);
 615                 IWL_CMD(REPLY_RXON_ASSOC);
 616                 IWL_CMD(REPLY_QOS_PARAM);
 617                 IWL_CMD(REPLY_RXON_TIMING);
 618                 IWL_CMD(REPLY_ADD_STA);
 619                 IWL_CMD(REPLY_REMOVE_STA);
 620                 IWL_CMD(REPLY_REMOVE_ALL_STA);
 621                 IWL_CMD(REPLY_3945_RX);
 622                 IWL_CMD(REPLY_TX);
 623                 IWL_CMD(REPLY_RATE_SCALE);
 624                 IWL_CMD(REPLY_LEDS_CMD);
 625                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
 626                 IWL_CMD(RADAR_NOTIFICATION);
 627                 IWL_CMD(REPLY_QUIET_CMD);
 628                 IWL_CMD(REPLY_CHANNEL_SWITCH);
 629                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
 630                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
 631                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
 632                 IWL_CMD(POWER_TABLE_CMD);
 633                 IWL_CMD(PM_SLEEP_NOTIFICATION);
 634                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
 635                 IWL_CMD(REPLY_SCAN_CMD);
 636                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
 637                 IWL_CMD(SCAN_START_NOTIFICATION);
 638                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
 639                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
 640                 IWL_CMD(BEACON_NOTIFICATION);
 641                 IWL_CMD(REPLY_TX_BEACON);
 642                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
 643                 IWL_CMD(QUIET_NOTIFICATION);
 644                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
 645                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
 646                 IWL_CMD(REPLY_BT_CONFIG);
 647                 IWL_CMD(REPLY_STATISTICS_CMD);
 648                 IWL_CMD(STATISTICS_NOTIFICATION);
 649                 IWL_CMD(REPLY_CARD_STATE_CMD);
 650                 IWL_CMD(CARD_STATE_NOTIFICATION);
 651                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
 652         default:
 653                 return "UNKNOWN";
 654
 655         }
 656 }
 657
 658 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 659
 660 /**
 661  * iwl3945_enqueue_hcmd - enqueue a uCode command
 662  * @priv: device private data point
 663  * @cmd: a point to the ucode command structure
 664  *
 665  * The function returns < 0 values to indicate the operation is
 666  * failed. On success, it turns the index (> 0) of command in the
 667  * command queue.
 668  */
 669 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 670 {
 671         struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 672         struct iwl3945_queue *q = &txq->q;
 673         struct iwl3945_tfd_frame *tfd;
 674         u32 *control_flags;
 675         struct iwl3945_cmd *out_cmd;
 676         u32 idx;
 677         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 678         dma_addr_t phys_addr;
 679         int pad;
 680         u16 count;
 681         int ret;
 682         unsigned long flags;
 683
 684         /* If any of the command structures end up being larger than
 685          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 686          * we will need to increase the size of the TFD entries */
 687         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 688                !(cmd->meta.flags & CMD_SIZE_HUGE));
 689
 690         if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 691                 IWL_ERROR("No space for Tx\n");
 692                 return -ENOSPC;
 693         }
 694
 695         spin_lock_irqsave(&priv->hcmd_lock, flags);
 696
 697         tfd = &txq->bd[q->write_ptr];
 698         memset(tfd, 0, sizeof(*tfd));
 699
 700         control_flags = (u32 *) tfd;
 701
 702         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 703         out_cmd = &txq->cmd[idx];
 704
 705         out_cmd->hdr.cmd = cmd->id;
 706         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 707         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 708
 709         /* At this point, the out_cmd now has all of the incoming cmd
 710          * information */
 711
 712         out_cmd->hdr.flags = 0;
 713         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 714                         INDEX_TO_SEQ(q->write_ptr));
 715         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 716                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 717
 718         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 719                         offsetof(struct iwl3945_cmd, hdr);
 720         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 721
 722         pad = U32_PAD(cmd->len);
 723         count = TFD_CTL_COUNT_GET(*control_flags);
 724         *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
 725
 726         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 727                      "%d bytes at %d[%d]:%d\n",
 728                      get_cmd_string(out_cmd->hdr.cmd),
 729                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 730                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 731
 732         txq->need_update = 1;
 733
 734         /* Increment and update queue's write index */
 735         q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
 736         ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
 737
 738         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 739         return ret ? ret : idx;
 740 }
 741
 742 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 743 {
 744         int ret;
 745
 746         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 747
 748         /* An asynchronous command can not expect an SKB to be set. */
 749         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 750
 751         /* An asynchronous command MUST have a callback. */
 752         BUG_ON(!cmd->meta.u.callback);
 753
 754         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 755                 return -EBUSY;
 756
 757         ret = iwl3945_enqueue_hcmd(priv, cmd);
 758         if (ret < 0) {
 759                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 760                           get_cmd_string(cmd->id), ret);
 761                 return ret;
 762         }
 763         return 0;
 764 }
 765
 766 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 767 {
 768         int cmd_idx;
 769         int ret;
 770         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
 771
 772         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 773
 774          /* A synchronous command can not have a callback set. */
 775         BUG_ON(cmd->meta.u.callback != NULL);
 776
 777         if (atomic_xchg(&entry, 1)) {
 778                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 779                           get_cmd_string(cmd->id));
 780                 return -EBUSY;
 781         }
 782
 783         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 784
 785         if (cmd->meta.flags & CMD_WANT_SKB)
 786                 cmd->meta.source = &cmd->meta;
 787
 788         cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
 789         if (cmd_idx < 0) {
 790                 ret = cmd_idx;
 791                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 792                           get_cmd_string(cmd->id), ret);
 793                 goto out;
 794         }
 795
 796         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 797                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 798                         HOST_COMPLETE_TIMEOUT);
 799         if (!ret) {
 800                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 801                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 802                                   get_cmd_string(cmd->id),
 803                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 804
 805                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 806                         ret = -ETIMEDOUT;
 807                         goto cancel;
 808                 }
 809         }
 810
 811         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 812                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 813                                get_cmd_string(cmd->id));
 814                 ret = -ECANCELED;
 815                 goto fail;
 816         }
 817         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 818                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 819                                get_cmd_string(cmd->id));
 820                 ret = -EIO;
 821                 goto fail;
 822         }
 823         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 824                 IWL_ERROR("Error: Response NULL in '%s'\n",
 825                           get_cmd_string(cmd->id));
 826                 ret = -EIO;
 827                 goto out;
 828         }
 829
 830         ret = 0;
 831         goto out;
 832
 833 cancel:
 834         if (cmd->meta.flags & CMD_WANT_SKB) {
 835                 struct iwl3945_cmd *qcmd;
 836
 837                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 838                  * TX cmd queue. Otherwise in case the cmd comes
 839                  * in later, it will possibly set an invalid
 840                  * address (cmd->meta.source). */
 841                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 842                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 843         }
 844 fail:
 845         if (cmd->meta.u.skb) {
 846                 dev_kfree_skb_any(cmd->meta.u.skb);
 847                 cmd->meta.u.skb = NULL;
 848         }
 849 out:
 850         atomic_set(&entry, 0);
 851         return ret;
 852 }
 853
 854 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
 855 {
 856         if (cmd->meta.flags & CMD_ASYNC)
 857                 return iwl3945_send_cmd_async(priv, cmd);
 858
 859         return iwl3945_send_cmd_sync(priv, cmd);
 860 }
 861
 862 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
 863 {
 864         struct iwl3945_host_cmd cmd = {
 865                 .id = id,
 866                 .len = len,
 867                 .data = data,
 868         };
 869
 870         return iwl3945_send_cmd_sync(priv, &cmd);
 871 }
 872
 873 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
 874 {
 875         struct iwl3945_host_cmd cmd = {
 876                 .id = id,
 877                 .len = sizeof(val),
 878                 .data = &val,
 879         };
 880
 881         return iwl3945_send_cmd_sync(priv, &cmd);
 882 }
 883
 884 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
 885 {
 886         return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 887 }
 888
 889 /**
 890  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 891  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 892  * @channel: Any channel valid for the requested phymode
 893
 894  * In addition to setting the staging RXON, priv->phymode is also set.
 895  *
 896  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 897  * in the staging RXON flag structure based on the phymode
 898  */
 899 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv, u8 phymode, u16 channel)
 900 {
 901         if (!iwl3945_get_channel_info(priv, phymode, channel)) {
 902                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 903                                channel, phymode);
 904                 return -EINVAL;
 905         }
 906
 907         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
 908             (priv->phymode == phymode))
 909                 return 0;
 910
 911         priv->staging_rxon.channel = cpu_to_le16(channel);
 912         if (phymode == MODE_IEEE80211A)
 913                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 914         else
 915                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 916
 917         priv->phymode = phymode;
 918
 919         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
 920
 921         return 0;
 922 }
 923
 924 /**
 925  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 926  *
 927  * NOTE:  This is really only useful during development and can eventually
 928  * be #ifdef'd out once the driver is stable and folks aren't actively
 929  * making changes
 930  */
 931 static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
 932 {
 933         int error = 0;
 934         int counter = 1;
 935
 936         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 937                 error |= le32_to_cpu(rxon->flags &
 938                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 939                                  RXON_FLG_RADAR_DETECT_MSK));
 940                 if (error)
 941                         IWL_WARNING("check 24G fields %d | %d\n",
 942                                     counter++, error);
 943         } else {
 944                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 945                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 946                 if (error)
 947                         IWL_WARNING("check 52 fields %d | %d\n",
 948                                     counter++, error);
 949                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 950                 if (error)
 951                         IWL_WARNING("check 52 CCK %d | %d\n",
 952                                     counter++, error);
 953         }
 954         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 955         if (error)
 956                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 957
 958         /* make sure basic rates 6Mbps and 1Mbps are supported */
 959         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 960                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 961         if (error)
 962                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 963
 964         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 965         if (error)
 966                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 967
 968         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 969                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 970         if (error)
 971                 IWL_WARNING("check CCK and short slot %d | %d\n",
 972                             counter++, error);
 973
 974         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 975                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 976         if (error)
 977                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 978                             counter++, error);
 979
 980         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 981                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 982         if (error)
 983                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 984                             counter++, error);
 985
 986         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 987                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 988                                 RXON_FLG_ANT_A_MSK)) == 0);
 989         if (error)
 990                 IWL_WARNING("check antenna %d %d\n", counter++, error);
 991
 992         if (error)
 993                 IWL_WARNING("Tuning to channel %d\n",
 994                             le16_to_cpu(rxon->channel));
 995
 996         if (error) {
 997                 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
 998                 return -1;
 999         }
1000         return 0;
1001 }
1002
1003 /**
1004  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1005  * @priv: staging_rxon is compared to active_rxon
1006  *
1007  * If the RXON structure is changing enough to require a new tune,
1008  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1009  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1010  */
1011 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
1012 {
1013
1014         /* These items are only settable from the full RXON command */
1015         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1016             compare_ether_addr(priv->staging_rxon.bssid_addr,
1017                                priv->active_rxon.bssid_addr) ||
1018             compare_ether_addr(priv->staging_rxon.node_addr,
1019                                priv->active_rxon.node_addr) ||
1020             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1021                                priv->active_rxon.wlap_bssid_addr) ||
1022             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1023             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1024             (priv->staging_rxon.air_propagation !=
1025              priv->active_rxon.air_propagation) ||
1026             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1027                 return 1;
1028
1029         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1030          * be updated with the RXON_ASSOC command -- however only some
1031          * flag transitions are allowed using RXON_ASSOC */
1032
1033         /* Check if we are not switching bands */
1034         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1035             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1036                 return 1;
1037
1038         /* Check if we are switching association toggle */
1039         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1040                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1041                 return 1;
1042
1043         return 0;
1044 }
1045
1046 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
1047 {
1048         int rc = 0;
1049         struct iwl3945_rx_packet *res = NULL;
1050         struct iwl3945_rxon_assoc_cmd rxon_assoc;
1051         struct iwl3945_host_cmd cmd = {
1052                 .id = REPLY_RXON_ASSOC,
1053                 .len = sizeof(rxon_assoc),
1054                 .meta.flags = CMD_WANT_SKB,
1055                 .data = &rxon_assoc,
1056         };
1057         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
1058         const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
1059
1060         if ((rxon1->flags == rxon2->flags) &&
1061             (rxon1->filter_flags == rxon2->filter_flags) &&
1062             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1063             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1064                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1065                 return 0;
1066         }
1067
1068         rxon_assoc.flags = priv->staging_rxon.flags;
1069         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1070         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1071         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1072         rxon_assoc.reserved = 0;
1073
1074         rc = iwl3945_send_cmd_sync(priv, &cmd);
1075         if (rc)
1076                 return rc;
1077
1078         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1079         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1080                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1081                 rc = -EIO;
1082         }
1083
1084         priv->alloc_rxb_skb--;
1085         dev_kfree_skb_any(cmd.meta.u.skb);
1086
1087         return rc;
1088 }
1089
1090 /**
1091  * iwl3945_commit_rxon - commit staging_rxon to hardware
1092  *
1093  * The RXON command in staging_rxon is committed to the hardware and
1094  * the active_rxon structure is updated with the new data.  This
1095  * function correctly transitions out of the RXON_ASSOC_MSK state if
1096  * a HW tune is required based on the RXON structure changes.
1097  */
1098 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1099 {
1100         /* cast away the const for active_rxon in this function */
1101         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1102         int rc = 0;
1103         DECLARE_MAC_BUF(mac);
1104
1105         if (!iwl3945_is_alive(priv))
1106                 return -1;
1107
1108         /* always get timestamp with Rx frame */
1109         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1110
1111         /* select antenna */
1112         priv->staging_rxon.flags &=
1113             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1114         priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1115
1116         rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
1117         if (rc) {
1118                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1119                 return -EINVAL;
1120         }
1121
1122         /* If we don't need to send a full RXON, we can use
1123          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1124          * and other flags for the current radio configuration. */
1125         if (!iwl3945_full_rxon_required(priv)) {
1126                 rc = iwl3945_send_rxon_assoc(priv);
1127                 if (rc) {
1128                         IWL_ERROR("Error setting RXON_ASSOC "
1129                                   "configuration (%d).\n", rc);
1130                         return rc;
1131                 }
1132
1133                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1134
1135                 return 0;
1136         }
1137
1138         /* If we are currently associated and the new config requires
1139          * an RXON_ASSOC and the new config wants the associated mask enabled,
1140          * we must clear the associated from the active configuration
1141          * before we apply the new config */
1142         if (iwl3945_is_associated(priv) &&
1143             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1144                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1145                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1146
1147                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1148                                       sizeof(struct iwl3945_rxon_cmd),
1149                                       &priv->active_rxon);
1150
1151                 /* If the mask clearing failed then we set
1152                  * active_rxon back to what it was previously */
1153                 if (rc) {
1154                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1155                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1156                                   "configuration (%d).\n", rc);
1157                         return rc;
1158                 }
1159         }
1160
1161         IWL_DEBUG_INFO("Sending RXON\n"
1162                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1163                        "* channel = %d\n"
1164                        "* bssid = %s\n",
1165                        ((priv->staging_rxon.filter_flags &
1166                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1167                        le16_to_cpu(priv->staging_rxon.channel),
1168                        print_mac(mac, priv->staging_rxon.bssid_addr));
1169
1170         /* Apply the new configuration */
1171         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1172                               sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1173         if (rc) {
1174                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1175                 return rc;
1176         }
1177
1178         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1179
1180         iwl3945_clear_stations_table(priv);
1181
1182         /* If we issue a new RXON command which required a tune then we must
1183          * send a new TXPOWER command or we won't be able to Tx any frames */
1184         rc = iwl3945_hw_reg_send_txpower(priv);
1185         if (rc) {
1186                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1187                 return rc;
1188         }
1189
1190         /* Add the broadcast address so we can send broadcast frames */
1191         if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1192             IWL_INVALID_STATION) {
1193                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1194                 return -EIO;
1195         }
1196
1197         /* If we have set the ASSOC_MSK and we are in BSS mode then
1198          * add the IWL_AP_ID to the station rate table */
1199         if (iwl3945_is_associated(priv) &&
1200             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
1201                 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1202                     == IWL_INVALID_STATION) {
1203                         IWL_ERROR("Error adding AP address for transmit.\n");
1204                         return -EIO;
1205                 }
1206
1207         /* Init the hardware's rate fallback order based on the
1208          * phymode */
1209         rc = iwl3945_init_hw_rate_table(priv);
1210         if (rc) {
1211                 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1212                 return -EIO;
1213         }
1214
1215         return 0;
1216 }
1217
1218 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1219 {
1220         struct iwl3945_bt_cmd bt_cmd = {
1221                 .flags = 3,
1222                 .lead_time = 0xAA,
1223                 .max_kill = 1,
1224                 .kill_ack_mask = 0,
1225                 .kill_cts_mask = 0,
1226         };
1227
1228         return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1229                                 sizeof(struct iwl3945_bt_cmd), &bt_cmd);
1230 }
1231
1232 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1233 {
1234         int rc = 0;
1235         struct iwl3945_rx_packet *res;
1236         struct iwl3945_host_cmd cmd = {
1237                 .id = REPLY_SCAN_ABORT_CMD,
1238                 .meta.flags = CMD_WANT_SKB,
1239         };
1240
1241         /* If there isn't a scan actively going on in the hardware
1242          * then we are in between scan bands and not actually
1243          * actively scanning, so don't send the abort command */
1244         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1245                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1246                 return 0;
1247         }
1248
1249         rc = iwl3945_send_cmd_sync(priv, &cmd);
1250         if (rc) {
1251                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1252                 return rc;
1253         }
1254
1255         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1256         if (res->u.status != CAN_ABORT_STATUS) {
1257                 /* The scan abort will return 1 for success or
1258                  * 2 for "failure".  A failure condition can be
1259                  * due to simply not being in an active scan which
1260                  * can occur if we send the scan abort before we
1261                  * the microcode has notified us that a scan is
1262                  * completed. */
1263                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1264                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1265                 clear_bit(STATUS_SCAN_HW, &priv->status);
1266         }
1267
1268         dev_kfree_skb_any(cmd.meta.u.skb);
1269
1270         return rc;
1271 }
1272
1273 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1274                                         struct iwl3945_cmd *cmd,
1275                                         struct sk_buff *skb)
1276 {
1277         return 1;
1278 }
1279
1280 /*
1281  * CARD_STATE_CMD
1282  *
1283  * Use: Sets the device's internal card state to enable, disable, or halt
1284  *
1285  * When in the 'enable' state the card operates as normal.
1286  * When in the 'disable' state, the card enters into a low power mode.
1287  * When in the 'halt' state, the card is shut down and must be fully
1288  * restarted to come back on.
1289  */
1290 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1291 {
1292         struct iwl3945_host_cmd cmd = {
1293                 .id = REPLY_CARD_STATE_CMD,
1294                 .len = sizeof(u32),
1295                 .data = &flags,
1296                 .meta.flags = meta_flag,
1297         };
1298
1299         if (meta_flag & CMD_ASYNC)
1300                 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1301
1302         return iwl3945_send_cmd(priv, &cmd);
1303 }
1304
1305 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1306                                      struct iwl3945_cmd *cmd, struct sk_buff *skb)
1307 {
1308         struct iwl3945_rx_packet *res = NULL;
1309
1310         if (!skb) {
1311                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1312                 return 1;
1313         }
1314
1315         res = (struct iwl3945_rx_packet *)skb->data;
1316         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1317                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1318                           res->hdr.flags);
1319                 return 1;
1320         }
1321
1322         switch (res->u.add_sta.status) {
1323         case ADD_STA_SUCCESS_MSK:
1324                 break;
1325         default:
1326                 break;
1327         }
1328
1329         /* We didn't cache the SKB; let the caller free it */
1330         return 1;
1331 }
1332
1333 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1334                          struct iwl3945_addsta_cmd *sta, u8 flags)
1335 {
1336         struct iwl3945_rx_packet *res = NULL;
1337         int rc = 0;
1338         struct iwl3945_host_cmd cmd = {
1339                 .id = REPLY_ADD_STA,
1340                 .len = sizeof(struct iwl3945_addsta_cmd),
1341                 .meta.flags = flags,
1342                 .data = sta,
1343         };
1344
1345         if (flags & CMD_ASYNC)
1346                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1347         else
1348                 cmd.meta.flags |= CMD_WANT_SKB;
1349
1350         rc = iwl3945_send_cmd(priv, &cmd);
1351
1352         if (rc || (flags & CMD_ASYNC))
1353                 return rc;
1354
1355         res = (struct iwl3945_rx_packet *)cmd.meta.u.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                 rc = -EIO;
1360         }
1361
1362         if (rc == 0) {
1363                 switch (res->u.add_sta.status) {
1364                 case ADD_STA_SUCCESS_MSK:
1365                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1366                         break;
1367                 default:
1368                         rc = -EIO;
1369                         IWL_WARNING("REPLY_ADD_STA failed\n");
1370                         break;
1371                 }
1372         }
1373
1374         priv->alloc_rxb_skb--;
1375         dev_kfree_skb_any(cmd.meta.u.skb);
1376
1377         return rc;
1378 }
1379
1380 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1381                                    struct ieee80211_key_conf *keyconf,
1382                                    u8 sta_id)
1383 {
1384         unsigned long flags;
1385         __le16 key_flags = 0;
1386
1387         switch (keyconf->alg) {
1388         case ALG_CCMP:
1389                 key_flags |= STA_KEY_FLG_CCMP;
1390                 key_flags |= cpu_to_le16(
1391                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1392                 key_flags &= ~STA_KEY_FLG_INVALID;
1393                 break;
1394         case ALG_TKIP:
1395         case ALG_WEP:
1396         default:
1397                 return -EINVAL;
1398         }
1399         spin_lock_irqsave(&priv->sta_lock, flags);
1400         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1401         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1402         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1403                keyconf->keylen);
1404
1405         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1406                keyconf->keylen);
1407         priv->stations[sta_id].sta.key.key_flags = key_flags;
1408         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1409         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1410
1411         spin_unlock_irqrestore(&priv->sta_lock, flags);
1412
1413         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1414         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1415         return 0;
1416 }
1417
1418 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1419 {
1420         unsigned long flags;
1421
1422         spin_lock_irqsave(&priv->sta_lock, flags);
1423         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1424         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
1425         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1426         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1427         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1428         spin_unlock_irqrestore(&priv->sta_lock, flags);
1429
1430         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1431         iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1432         return 0;
1433 }
1434
1435 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1436 {
1437         struct list_head *element;
1438
1439         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1440                        priv->frames_count);
1441
1442         while (!list_empty(&priv->free_frames)) {
1443                 element = priv->free_frames.next;
1444                 list_del(element);
1445                 kfree(list_entry(element, struct iwl3945_frame, list));
1446                 priv->frames_count--;
1447         }
1448
1449         if (priv->frames_count) {
1450                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1451                             priv->frames_count);
1452                 priv->frames_count = 0;
1453         }
1454 }
1455
1456 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1457 {
1458         struct iwl3945_frame *frame;
1459         struct list_head *element;
1460         if (list_empty(&priv->free_frames)) {
1461                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1462                 if (!frame) {
1463                         IWL_ERROR("Could not allocate frame!\n");
1464                         return NULL;
1465                 }
1466
1467                 priv->frames_count++;
1468                 return frame;
1469         }
1470
1471         element = priv->free_frames.next;
1472         list_del(element);
1473         return list_entry(element, struct iwl3945_frame, list);
1474 }
1475
1476 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1477 {
1478         memset(frame, 0, sizeof(*frame));
1479         list_add(&frame->list, &priv->free_frames);
1480 }
1481
1482 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1483                                 struct ieee80211_hdr *hdr,
1484                                 const u8 *dest, int left)
1485 {
1486
1487         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1488             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1489              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1490                 return 0;
1491
1492         if (priv->ibss_beacon->len > left)
1493                 return 0;
1494
1495         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1496
1497         return priv->ibss_beacon->len;
1498 }
1499
1500 static int iwl3945_rate_index_from_plcp(int plcp)
1501 {
1502         int i = 0;
1503
1504         for (i = 0; i < IWL_RATE_COUNT; i++)
1505                 if (iwl3945_rates[i].plcp == plcp)
1506                         return i;
1507         return -1;
1508 }
1509
1510 static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
1511 {
1512         u8 i;
1513
1514         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1515              i = iwl3945_rates[i].next_ieee) {
1516                 if (rate_mask & (1 << i))
1517                         return iwl3945_rates[i].plcp;
1518         }
1519
1520         return IWL_RATE_INVALID;
1521 }
1522
1523 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1524 {
1525         struct iwl3945_frame *frame;
1526         unsigned int frame_size;
1527         int rc;
1528         u8 rate;
1529
1530         frame = iwl3945_get_free_frame(priv);
1531
1532         if (!frame) {
1533                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1534                           "command.\n");
1535                 return -ENOMEM;
1536         }
1537
1538         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1539                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
1540                                                 0xFF0);
1541                 if (rate == IWL_INVALID_RATE)
1542                         rate = IWL_RATE_6M_PLCP;
1543         } else {
1544                 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1545                 if (rate == IWL_INVALID_RATE)
1546                         rate = IWL_RATE_1M_PLCP;
1547         }
1548
1549         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1550
1551         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1552                               &frame->u.cmd[0]);
1553
1554         iwl3945_free_frame(priv, frame);
1555
1556         return rc;
1557 }
1558
1559 /******************************************************************************
1560  *
1561  * EEPROM related functions
1562  *
1563  ******************************************************************************/
1564
1565 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1566 {
1567         memcpy(mac, priv->eeprom.mac_address, 6);
1568 }
1569
1570 /**
1571  * iwl3945_eeprom_init - read EEPROM contents
1572  *
1573  * Load the EEPROM contents from adapter into priv->eeprom
1574  *
1575  * NOTE:  This routine uses the non-debug IO access functions.
1576  */
1577 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1578 {
1579         u16 *e = (u16 *)&priv->eeprom;
1580         u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1581         u32 r;
1582         int sz = sizeof(priv->eeprom);
1583         int rc;
1584         int i;
1585         u16 addr;
1586
1587         /* The EEPROM structure has several padding buffers within it
1588          * and when adding new EEPROM maps is subject to programmer errors
1589          * which may be very difficult to identify without explicitly
1590          * checking the resulting size of the eeprom map. */
1591         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1592
1593         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1594                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1595                 return -ENOENT;
1596         }
1597
1598         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1599         rc = iwl3945_eeprom_acquire_semaphore(priv);
1600         if (rc < 0) {
1601                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1602                 return -ENOENT;
1603         }
1604
1605         /* eeprom is an array of 16bit values */
1606         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1607                 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1608                 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1609
1610                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1611                                         i += IWL_EEPROM_ACCESS_DELAY) {
1612                         r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1613                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1614                                 break;
1615                         udelay(IWL_EEPROM_ACCESS_DELAY);
1616                 }
1617
1618                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1619                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1620                         return -ETIMEDOUT;
1621                 }
1622                 e[addr / 2] = le16_to_cpu(r >> 16);
1623         }
1624
1625         return 0;
1626 }
1627
1628 /******************************************************************************
1629  *
1630  * Misc. internal state and helper functions
1631  *
1632  ******************************************************************************/
1633 #ifdef CONFIG_IWL3945_DEBUG
1634
1635 /**
1636  * iwl3945_report_frame - dump frame to syslog during debug sessions
1637  *
1638  * You may hack this function to show different aspects of received frames,
1639  * including selective frame dumps.
1640  * group100 parameter selects whether to show 1 out of 100 good frames.
1641  */
1642 void iwl3945_report_frame(struct iwl3945_priv *priv,
1643                       struct iwl3945_rx_packet *pkt,
1644                       struct ieee80211_hdr *header, int group100)
1645 {
1646         u32 to_us;
1647         u32 print_summary = 0;
1648         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1649         u32 hundred = 0;
1650         u32 dataframe = 0;
1651         u16 fc;
1652         u16 seq_ctl;
1653         u16 channel;
1654         u16 phy_flags;
1655         int rate_sym;
1656         u16 length;
1657         u16 status;
1658         u16 bcn_tmr;
1659         u32 tsf_low;
1660         u64 tsf;
1661         u8 rssi;
1662         u8 agc;
1663         u16 sig_avg;
1664         u16 noise_diff;
1665         struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1666         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1667         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
1668         u8 *data = IWL_RX_DATA(pkt);
1669
1670         /* MAC header */
1671         fc = le16_to_cpu(header->frame_control);
1672         seq_ctl = le16_to_cpu(header->seq_ctrl);
1673
1674         /* metadata */
1675         channel = le16_to_cpu(rx_hdr->channel);
1676         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1677         rate_sym = rx_hdr->rate;
1678         length = le16_to_cpu(rx_hdr->len);
1679
1680         /* end-of-frame status and timestamp */
1681         status = le32_to_cpu(rx_end->status);
1682         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1683         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1684         tsf = le64_to_cpu(rx_end->timestamp);
1685
1686         /* signal statistics */
1687         rssi = rx_stats->rssi;
1688         agc = rx_stats->agc;
1689         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1690         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1691
1692         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1693
1694         /* if data frame is to us and all is good,
1695          *   (optionally) print summary for only 1 out of every 100 */
1696         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1697             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1698                 dataframe = 1;
1699                 if (!group100)
1700                         print_summary = 1;      /* print each frame */
1701                 else if (priv->framecnt_to_us < 100) {
1702                         priv->framecnt_to_us++;
1703                         print_summary = 0;
1704                 } else {
1705                         priv->framecnt_to_us = 0;
1706                         print_summary = 1;
1707                         hundred = 1;
1708                 }
1709         } else {
1710                 /* print summary for all other frames */
1711                 print_summary = 1;
1712         }
1713
1714         if (print_summary) {
1715                 char *title;
1716                 u32 rate;
1717
1718                 if (hundred)
1719                         title = "100Frames";
1720                 else if (fc & IEEE80211_FCTL_RETRY)
1721                         title = "Retry";
1722                 else if (ieee80211_is_assoc_response(fc))
1723                         title = "AscRsp";
1724                 else if (ieee80211_is_reassoc_response(fc))
1725                         title = "RasRsp";
1726                 else if (ieee80211_is_probe_response(fc)) {
1727                         title = "PrbRsp";
1728                         print_dump = 1; /* dump frame contents */
1729                 } else if (ieee80211_is_beacon(fc)) {
1730                         title = "Beacon";
1731                         print_dump = 1; /* dump frame contents */
1732                 } else if (ieee80211_is_atim(fc))
1733                         title = "ATIM";
1734                 else if (ieee80211_is_auth(fc))
1735                         title = "Auth";
1736                 else if (ieee80211_is_deauth(fc))
1737                         title = "DeAuth";
1738                 else if (ieee80211_is_disassoc(fc))
1739                         title = "DisAssoc";
1740                 else
1741                         title = "Frame";
1742
1743                 rate = iwl3945_rate_index_from_plcp(rate_sym);
1744                 if (rate == -1)
1745                         rate = 0;
1746                 else
1747                         rate = iwl3945_rates[rate].ieee / 2;
1748
1749                 /* print frame summary.
1750                  * MAC addresses show just the last byte (for brevity),
1751                  *    but you can hack it to show more, if you'd like to. */
1752                 if (dataframe)
1753                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1754                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1755                                      title, fc, header->addr1[5],
1756                                      length, rssi, channel, rate);
1757                 else {
1758                         /* src/dst addresses assume managed mode */
1759                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1760                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1761                                      "phy=0x%02x, chnl=%d\n",
1762                                      title, fc, header->addr1[5],
1763                                      header->addr3[5], rssi,
1764                                      tsf_low - priv->scan_start_tsf,
1765                                      phy_flags, channel);
1766                 }
1767         }
1768         if (print_dump)
1769                 iwl3945_print_hex_dump(IWL_DL_RX, data, length);
1770 }
1771 #endif
1772
1773 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1774 {
1775         if (priv->hw_setting.shared_virt)
1776                 pci_free_consistent(priv->pci_dev,
1777                                     sizeof(struct iwl3945_shared),
1778                                     priv->hw_setting.shared_virt,
1779                                     priv->hw_setting.shared_phys);
1780 }
1781
1782 /**
1783  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1784  *
1785  * return : set the bit for each supported rate insert in ie
1786  */
1787 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1788                                     u16 basic_rate, int *left)
1789 {
1790         u16 ret_rates = 0, bit;
1791         int i;
1792         u8 *cnt = ie;
1793         u8 *rates = ie + 1;
1794
1795         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1796                 if (bit & supported_rate) {
1797                         ret_rates |= bit;
1798                         rates[*cnt] = iwl3945_rates[i].ieee |
1799                                 ((bit & basic_rate) ? 0x80 : 0x00);
1800                         (*cnt)++;
1801                         (*left)--;
1802                         if ((*left <= 0) ||
1803                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1804                                 break;
1805                 }
1806         }
1807
1808         return ret_rates;
1809 }
1810
1811 /**
1812  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1813  */
1814 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1815                               struct ieee80211_mgmt *frame,
1816                               int left, int is_direct)
1817 {
1818         int len = 0;
1819         u8 *pos = NULL;
1820         u16 active_rates, ret_rates, cck_rates;
1821
1822         /* Make sure there is enough space for the probe request,
1823          * two mandatory IEs and the data */
1824         left -= 24;
1825         if (left < 0)
1826                 return 0;
1827         len += 24;
1828
1829         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1830         memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1831         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1832         memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1833         frame->seq_ctrl = 0;
1834
1835         /* fill in our indirect SSID IE */
1836         /* ...next IE... */
1837
1838         left -= 2;
1839         if (left < 0)
1840                 return 0;
1841         len += 2;
1842         pos = &(frame->u.probe_req.variable[0]);
1843         *pos++ = WLAN_EID_SSID;
1844         *pos++ = 0;
1845
1846         /* fill in our direct SSID IE... */
1847         if (is_direct) {
1848                 /* ...next IE... */
1849                 left -= 2 + priv->essid_len;
1850                 if (left < 0)
1851                         return 0;
1852                 /* ... fill it in... */
1853                 *pos++ = WLAN_EID_SSID;
1854                 *pos++ = priv->essid_len;
1855                 memcpy(pos, priv->essid, priv->essid_len);
1856                 pos += priv->essid_len;
1857                 len += 2 + priv->essid_len;
1858         }
1859
1860         /* fill in supported rate */
1861         /* ...next IE... */
1862         left -= 2;
1863         if (left < 0)
1864                 return 0;
1865
1866         /* ... fill it in... */
1867         *pos++ = WLAN_EID_SUPP_RATES;
1868         *pos = 0;
1869
1870         priv->active_rate = priv->rates_mask;
1871         active_rates = priv->active_rate;
1872         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1873
1874         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1875         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1876                         priv->active_rate_basic, &left);
1877         active_rates &= ~ret_rates;
1878
1879         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1880                                  priv->active_rate_basic, &left);
1881         active_rates &= ~ret_rates;
1882
1883         len += 2 + *pos;
1884         pos += (*pos) + 1;
1885         if (active_rates == 0)
1886                 goto fill_end;
1887
1888         /* fill in supported extended rate */
1889         /* ...next IE... */
1890         left -= 2;
1891         if (left < 0)
1892                 return 0;
1893         /* ... fill it in... */
1894         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1895         *pos = 0;
1896         iwl3945_supported_rate_to_ie(pos, active_rates,
1897                                  priv->active_rate_basic, &left);
1898         if (*pos > 0)
1899                 len += 2 + *pos;
1900
1901  fill_end:
1902         return (u16)len;
1903 }
1904
1905 /*
1906  * QoS  support
1907 */
1908 #ifdef CONFIG_IWL3945_QOS
1909 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1910                                        struct iwl3945_qosparam_cmd *qos)
1911 {
1912
1913         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1914                                 sizeof(struct iwl3945_qosparam_cmd), qos);
1915 }
1916
1917 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1918 {
1919         u16 cw_min = 15;
1920         u16 cw_max = 1023;
1921         u8 aifs = 2;
1922         u8 is_legacy = 0;
1923         unsigned long flags;
1924         int i;
1925
1926         spin_lock_irqsave(&priv->lock, flags);
1927         priv->qos_data.qos_active = 0;
1928
1929         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1930                 if (priv->qos_data.qos_enable)
1931                         priv->qos_data.qos_active = 1;
1932                 if (!(priv->active_rate & 0xfff0)) {
1933                         cw_min = 31;
1934                         is_legacy = 1;
1935                 }
1936         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1937                 if (priv->qos_data.qos_enable)
1938                         priv->qos_data.qos_active = 1;
1939         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1940                 cw_min = 31;
1941                 is_legacy = 1;
1942         }
1943
1944         if (priv->qos_data.qos_active)
1945                 aifs = 3;
1946
1947         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1948         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1949         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1950         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1951         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1952
1953         if (priv->qos_data.qos_active) {
1954                 i = 1;
1955                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1956                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1957                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1958                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1959                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1960
1961                 i = 2;
1962                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1963                         cpu_to_le16((cw_min + 1) / 2 - 1);
1964                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1965                         cpu_to_le16(cw_max);
1966                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1967                 if (is_legacy)
1968                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1969                                 cpu_to_le16(6016);
1970                 else
1971                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1972                                 cpu_to_le16(3008);
1973                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1974
1975                 i = 3;
1976                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1977                         cpu_to_le16((cw_min + 1) / 4 - 1);
1978                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1979                         cpu_to_le16((cw_max + 1) / 2 - 1);
1980                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1981                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1982                 if (is_legacy)
1983                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1984                                 cpu_to_le16(3264);
1985                 else
1986                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1987                                 cpu_to_le16(1504);
1988         } else {
1989                 for (i = 1; i < 4; i++) {
1990                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1991                                 cpu_to_le16(cw_min);
1992                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1993                                 cpu_to_le16(cw_max);
1994                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1995                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1996                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1997                 }
1998         }
1999         IWL_DEBUG_QOS("set QoS to default \n");
2000
2001         spin_unlock_irqrestore(&priv->lock, flags);
2002 }
2003
2004 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
2005 {
2006         unsigned long flags;
2007
2008         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2009                 return;
2010
2011         if (!priv->qos_data.qos_enable)
2012                 return;
2013
2014         spin_lock_irqsave(&priv->lock, flags);
2015         priv->qos_data.def_qos_parm.qos_flags = 0;
2016
2017         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2018             !priv->qos_data.qos_cap.q_AP.txop_request)
2019                 priv->qos_data.def_qos_parm.qos_flags |=
2020                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2021
2022         if (priv->qos_data.qos_active)
2023                 priv->qos_data.def_qos_parm.qos_flags |=
2024                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2025
2026         spin_unlock_irqrestore(&priv->lock, flags);
2027
2028         if (force || iwl3945_is_associated(priv)) {
2029                 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2030                               priv->qos_data.qos_active);
2031
2032                 iwl3945_send_qos_params_command(priv,
2033                                 &(priv->qos_data.def_qos_parm));
2034         }
2035 }
2036
2037 #endif /* CONFIG_IWL3945_QOS */
2038 /*
2039  * Power management (not Tx power!) functions
2040  */
2041 #define MSEC_TO_USEC 1024
2042
2043 #define NOSLP __constant_cpu_to_le32(0)
2044 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
2045 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2046 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2047                                      __constant_cpu_to_le32(X1), \
2048                                      __constant_cpu_to_le32(X2), \
2049                                      __constant_cpu_to_le32(X3), \
2050                                      __constant_cpu_to_le32(X4)}
2051
2052
2053 /* default power management (not Tx power) table values */
2054 /* for tim  0-10 */
2055 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
2056         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2057         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2058         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2059         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2060         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2061         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2062 };
2063
2064 /* for tim > 10 */
2065 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
2066         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2067         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2068                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2069         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2070                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2071         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2072                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2073         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2074         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2075                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2076 };
2077
2078 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
2079 {
2080         int rc = 0, i;
2081         struct iwl3945_power_mgr *pow_data;
2082         int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
2083         u16 pci_pm;
2084
2085         IWL_DEBUG_POWER("Initialize power \n");
2086
2087         pow_data = &(priv->power_data);
2088
2089         memset(pow_data, 0, sizeof(*pow_data));
2090
2091         pow_data->active_index = IWL_POWER_RANGE_0;
2092         pow_data->dtim_val = 0xffff;
2093
2094         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2095         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2096
2097         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2098         if (rc != 0)
2099                 return 0;
2100         else {
2101                 struct iwl3945_powertable_cmd *cmd;
2102
2103                 IWL_DEBUG_POWER("adjust power command flags\n");
2104
2105                 for (i = 0; i < IWL_POWER_AC; i++) {
2106                         cmd = &pow_data->pwr_range_0[i].cmd;
2107
2108                         if (pci_pm & 0x1)
2109                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2110                         else
2111                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2112                 }
2113         }
2114         return rc;
2115 }
2116
2117 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
2118                                 struct iwl3945_powertable_cmd *cmd, u32 mode)
2119 {
2120         int rc = 0, i;
2121         u8 skip;
2122         u32 max_sleep = 0;
2123         struct iwl3945_power_vec_entry *range;
2124         u8 period = 0;
2125         struct iwl3945_power_mgr *pow_data;
2126
2127         if (mode > IWL_POWER_INDEX_5) {
2128                 IWL_DEBUG_POWER("Error invalid power mode \n");
2129                 return -1;
2130         }
2131         pow_data = &(priv->power_data);
2132
2133         if (pow_data->active_index == IWL_POWER_RANGE_0)
2134                 range = &pow_data->pwr_range_0[0];
2135         else
2136                 range = &pow_data->pwr_range_1[1];
2137
2138         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
2139
2140 #ifdef IWL_MAC80211_DISABLE
2141         if (priv->assoc_network != NULL) {
2142                 unsigned long flags;
2143
2144                 period = priv->assoc_network->tim.tim_period;
2145         }
2146 #endif  /*IWL_MAC80211_DISABLE */
2147         skip = range[mode].no_dtim;
2148
2149         if (period == 0) {
2150                 period = 1;
2151                 skip = 0;
2152         }
2153
2154         if (skip == 0) {
2155                 max_sleep = period;
2156                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2157         } else {
2158                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2159                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2160                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2161         }
2162
2163         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2164                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2165                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2166         }
2167
2168         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2169         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2170         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2171         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2172                         le32_to_cpu(cmd->sleep_interval[0]),
2173                         le32_to_cpu(cmd->sleep_interval[1]),
2174                         le32_to_cpu(cmd->sleep_interval[2]),
2175                         le32_to_cpu(cmd->sleep_interval[3]),
2176                         le32_to_cpu(cmd->sleep_interval[4]));
2177
2178         return rc;
2179 }
2180
2181 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
2182 {
2183         u32 uninitialized_var(final_mode);
2184         int rc;
2185         struct iwl3945_powertable_cmd cmd;
2186
2187         /* If on battery, set to 3,
2188          * if plugged into AC power, set to CAM ("continuously aware mode"),
2189          * else user level */
2190         switch (mode) {
2191         case IWL_POWER_BATTERY:
2192                 final_mode = IWL_POWER_INDEX_3;
2193                 break;
2194         case IWL_POWER_AC:
2195                 final_mode = IWL_POWER_MODE_CAM;
2196                 break;
2197         default:
2198                 final_mode = mode;
2199                 break;
2200         }
2201
2202         iwl3945_update_power_cmd(priv, &cmd, final_mode);
2203
2204         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2205
2206         if (final_mode == IWL_POWER_MODE_CAM)
2207                 clear_bit(STATUS_POWER_PMI, &priv->status);
2208         else
2209                 set_bit(STATUS_POWER_PMI, &priv->status);
2210
2211         return rc;
2212 }
2213
2214 int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2215 {
2216         /* Filter incoming packets to determine if they are targeted toward
2217          * this network, discarding packets coming from ourselves */
2218         switch (priv->iw_mode) {
2219         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2220                 /* packets from our adapter are dropped (echo) */
2221                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2222                         return 0;
2223                 /* {broad,multi}cast packets to our IBSS go through */
2224                 if (is_multicast_ether_addr(header->addr1))
2225                         return !compare_ether_addr(header->addr3, priv->bssid);
2226                 /* packets to our adapter go through */
2227                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2228         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2229                 /* packets from our adapter are dropped (echo) */
2230                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2231                         return 0;
2232                 /* {broad,multi}cast packets to our BSS go through */
2233                 if (is_multicast_ether_addr(header->addr1))
2234                         return !compare_ether_addr(header->addr2, priv->bssid);
2235                 /* packets to our adapter go through */
2236                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2237         }
2238
2239         return 1;
2240 }
2241
2242 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2243
2244 static const char *iwl3945_get_tx_fail_reason(u32 status)
2245 {
2246         switch (status & TX_STATUS_MSK) {
2247         case TX_STATUS_SUCCESS:
2248                 return "SUCCESS";
2249                 TX_STATUS_ENTRY(SHORT_LIMIT);
2250                 TX_STATUS_ENTRY(LONG_LIMIT);
2251                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2252                 TX_STATUS_ENTRY(MGMNT_ABORT);
2253                 TX_STATUS_ENTRY(NEXT_FRAG);
2254                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2255                 TX_STATUS_ENTRY(DEST_PS);
2256                 TX_STATUS_ENTRY(ABORTED);
2257                 TX_STATUS_ENTRY(BT_RETRY);
2258                 TX_STATUS_ENTRY(STA_INVALID);
2259                 TX_STATUS_ENTRY(FRAG_DROPPED);
2260                 TX_STATUS_ENTRY(TID_DISABLE);
2261                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2262                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2263                 TX_STATUS_ENTRY(TX_LOCKED);
2264                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2265         }
2266
2267         return "UNKNOWN";
2268 }
2269
2270 /**
2271  * iwl3945_scan_cancel - Cancel any currently executing HW scan
2272  *
2273  * NOTE: priv->mutex is not required before calling this function
2274  */
2275 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
2276 {
2277         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2278                 clear_bit(STATUS_SCANNING, &priv->status);
2279                 return 0;
2280         }
2281
2282         if (test_bit(STATUS_SCANNING, &priv->status)) {
2283                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2284                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2285                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2286                         queue_work(priv->workqueue, &priv->abort_scan);
2287
2288                 } else
2289                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2290
2291                 return test_bit(STATUS_SCANNING, &priv->status);
2292         }
2293
2294         return 0;
2295 }
2296
2297 /**
2298  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2299  * @ms: amount of time to wait (in milliseconds) for scan to abort
2300  *
2301  * NOTE: priv->mutex must be held before calling this function
2302  */
2303 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2304 {
2305         unsigned long now = jiffies;
2306         int ret;
2307
2308         ret = iwl3945_scan_cancel(priv);
2309         if (ret && ms) {
2310                 mutex_unlock(&priv->mutex);
2311                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2312                                 test_bit(STATUS_SCANNING, &priv->status))
2313                         msleep(1);
2314                 mutex_lock(&priv->mutex);
2315
2316                 return test_bit(STATUS_SCANNING, &priv->status);
2317         }
2318
2319         return ret;
2320 }
2321
2322 static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
2323 {
2324         /* Reset ieee stats */
2325
2326         /* We don't reset the net_device_stats (ieee->stats) on
2327          * re-association */
2328
2329         priv->last_seq_num = -1;
2330         priv->last_frag_num = -1;
2331         priv->last_packet_time = 0;
2332
2333         iwl3945_scan_cancel(priv);
2334 }
2335
2336 #define MAX_UCODE_BEACON_INTERVAL       1024
2337 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2338
2339 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2340 {
2341         u16 new_val = 0;
2342         u16 beacon_factor = 0;
2343
2344         beacon_factor =
2345             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2346                 / MAX_UCODE_BEACON_INTERVAL;
2347         new_val = beacon_val / beacon_factor;
2348
2349         return cpu_to_le16(new_val);
2350 }
2351
2352 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2353 {
2354         u64 interval_tm_unit;
2355         u64 tsf, result;
2356         unsigned long flags;
2357         struct ieee80211_conf *conf = NULL;
2358         u16 beacon_int = 0;
2359
2360         conf = ieee80211_get_hw_conf(priv->hw);
2361
2362         spin_lock_irqsave(&priv->lock, flags);
2363         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2364         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2365
2366         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2367
2368         tsf = priv->timestamp1;
2369         tsf = ((tsf << 32) | priv->timestamp0);
2370
2371         beacon_int = priv->beacon_int;
2372         spin_unlock_irqrestore(&priv->lock, flags);
2373
2374         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2375                 if (beacon_int == 0) {
2376                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2377                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2378                 } else {
2379                         priv->rxon_timing.beacon_interval =
2380                                 cpu_to_le16(beacon_int);
2381                         priv->rxon_timing.beacon_interval =
2382                             iwl3945_adjust_beacon_interval(
2383                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2384                 }
2385
2386                 priv->rxon_timing.atim_window = 0;
2387         } else {
2388                 priv->rxon_timing.beacon_interval =
2389                         iwl3945_adjust_beacon_interval(conf->beacon_int);
2390                 /* TODO: we need to get atim_window from upper stack
2391                  * for now we set to 0 */
2392                 priv->rxon_timing.atim_window = 0;
2393         }
2394
2395         interval_tm_unit =
2396                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2397         result = do_div(tsf, interval_tm_unit);
2398         priv->rxon_timing.beacon_init_val =
2399             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2400
2401         IWL_DEBUG_ASSOC
2402             ("beacon interval %d beacon timer %d beacon tim %d\n",
2403                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2404                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2405                 le16_to_cpu(priv->rxon_timing.atim_window));
2406 }
2407
2408 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2409 {
2410         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2411                 IWL_ERROR("APs don't scan.\n");
2412                 return 0;
2413         }
2414
2415         if (!iwl3945_is_ready_rf(priv)) {
2416                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2417                 return -EIO;
2418         }
2419
2420         if (test_bit(STATUS_SCANNING, &priv->status)) {
2421                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2422                 return -EAGAIN;
2423         }
2424
2425         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2426                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2427                                "Queuing.\n");
2428                 return -EAGAIN;
2429         }
2430
2431         IWL_DEBUG_INFO("Starting scan...\n");
2432         priv->scan_bands = 2;
2433         set_bit(STATUS_SCANNING, &priv->status);
2434         priv->scan_start = jiffies;
2435         priv->scan_pass_start = priv->scan_start;
2436
2437         queue_work(priv->workqueue, &priv->request_scan);
2438
2439         return 0;
2440 }
2441
2442 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2443 {
2444         struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2445
2446         if (hw_decrypt)
2447                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2448         else
2449                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2450
2451         return 0;
2452 }
2453
2454 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv, u8 phymode)
2455 {
2456         if (phymode == MODE_IEEE80211A) {
2457                 priv->staging_rxon.flags &=
2458                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2459                       | RXON_FLG_CCK_MSK);
2460                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2461         } else {
2462                 /* Copied from iwl3945_bg_post_associate() */
2463                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2464                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2465                 else
2466                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2467
2468                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2469                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2470
2471                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2472                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2473                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2474         }
2475 }
2476
2477 /*
2478  * initialize rxon structure with default values from eeprom
2479  */
2480 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
2481 {
2482         const struct iwl3945_channel_info *ch_info;
2483
2484         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2485
2486         switch (priv->iw_mode) {
2487         case IEEE80211_IF_TYPE_AP:
2488                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2489                 break;
2490
2491         case IEEE80211_IF_TYPE_STA:
2492                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2493                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2494                 break;
2495
2496         case IEEE80211_IF_TYPE_IBSS:
2497                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2498                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2499                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2500                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2501                 break;
2502
2503         case IEEE80211_IF_TYPE_MNTR:
2504                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2505                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2506                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2507                 break;
2508         }
2509
2510 #if 0
2511         /* TODO:  Figure out when short_preamble would be set and cache from
2512          * that */
2513         if (!hw_to_local(priv->hw)->short_preamble)
2514                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2515         else
2516                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2517 #endif
2518
2519         ch_info = iwl3945_get_channel_info(priv, priv->phymode,
2520                                        le16_to_cpu(priv->staging_rxon.channel));
2521
2522         if (!ch_info)
2523                 ch_info = &priv->channel_info[0];
2524
2525         /*
2526          * in some case A channels are all non IBSS
2527          * in this case force B/G channel
2528          */
2529         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2530             !(is_channel_ibss(ch_info)))
2531                 ch_info = &priv->channel_info[0];
2532
2533         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2534         if (is_channel_a_band(ch_info))
2535                 priv->phymode = MODE_IEEE80211A;
2536         else
2537                 priv->phymode = MODE_IEEE80211G;
2538
2539         iwl3945_set_flags_for_phymode(priv, priv->phymode);
2540
2541         priv->staging_rxon.ofdm_basic_rates =
2542             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2543         priv->staging_rxon.cck_basic_rates =
2544             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2545 }
2546
2547 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2548 {
2549         if (!iwl3945_is_ready_rf(priv))
2550                 return -EAGAIN;
2551
2552         if (mode == IEEE80211_IF_TYPE_IBSS) {
2553                 const struct iwl3945_channel_info *ch_info;
2554
2555                 ch_info = iwl3945_get_channel_info(priv,
2556                         priv->phymode,
2557                         le16_to_cpu(priv->staging_rxon.channel));
2558
2559                 if (!ch_info || !is_channel_ibss(ch_info)) {
2560                         IWL_ERROR("channel %d not IBSS channel\n",
2561                                   le16_to_cpu(priv->staging_rxon.channel));
2562                         return -EINVAL;
2563                 }
2564         }
2565
2566         cancel_delayed_work(&priv->scan_check);
2567         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2568                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2569                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2570                 return -EAGAIN;
2571         }
2572
2573         priv->iw_mode = mode;
2574
2575         iwl3945_connection_init_rx_config(priv);
2576         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2577
2578         iwl3945_clear_stations_table(priv);
2579
2580         iwl3945_commit_rxon(priv);
2581
2582         return 0;
2583 }
2584
2585 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2586                                       struct ieee80211_tx_control *ctl,
2587                                       struct iwl3945_cmd *cmd,
2588                                       struct sk_buff *skb_frag,
2589                                       int last_frag)
2590 {
2591         struct iwl3945_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2592
2593         switch (keyinfo->alg) {
2594         case ALG_CCMP:
2595                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2596                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2597                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2598                 break;
2599
2600         case ALG_TKIP:
2601 #if 0
2602                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2603
2604                 if (last_frag)
2605                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2606                                8);
2607                 else
2608                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2609 #endif
2610                 break;
2611
2612         case ALG_WEP:
2613                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2614                     (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2615
2616                 if (keyinfo->keylen == 13)
2617                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2618
2619                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2620
2621                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2622                              "with key %d\n", ctl->key_idx);
2623                 break;
2624
2625         default:
2626                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2627                 break;
2628         }
2629 }
2630
2631 /*
2632  * handle build REPLY_TX command notification.
2633  */
2634 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2635                                   struct iwl3945_cmd *cmd,
2636                                   struct ieee80211_tx_control *ctrl,
2637                                   struct ieee80211_hdr *hdr,
2638                                   int is_unicast, u8 std_id)
2639 {
2640         __le16 *qc;
2641         u16 fc = le16_to_cpu(hdr->frame_control);
2642         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2643
2644         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2645         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2646                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2647                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2648                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2649                 if (ieee80211_is_probe_response(fc) &&
2650                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2651                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2652         } else {
2653                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2654                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2655         }
2656
2657         cmd->cmd.tx.sta_id = std_id;
2658         if (ieee80211_get_morefrag(hdr))
2659                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2660
2661         qc = ieee80211_get_qos_ctrl(hdr);
2662         if (qc) {
2663                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2664                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2665         } else
2666                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2667
2668         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2669                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2670                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2671         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2672                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2673                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2674         }
2675
2676         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2677                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2678
2679         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2680         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2681                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2682                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2683                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2684                 else
2685                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2686         } else
2687                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2688
2689         cmd->cmd.tx.driver_txop = 0;
2690         cmd->cmd.tx.tx_flags = tx_flags;
2691         cmd->cmd.tx.next_frame_len = 0;
2692 }
2693
2694 /**
2695  * iwl3945_get_sta_id - Find station's index within station table
2696  */
2697 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2698 {
2699         int sta_id;
2700         u16 fc = le16_to_cpu(hdr->frame_control);
2701
2702         /* If this frame is broadcast or management, use broadcast station id */
2703         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2704             is_multicast_ether_addr(hdr->addr1))
2705                 return priv->hw_setting.bcast_sta_id;
2706
2707         switch (priv->iw_mode) {
2708
2709         /* If we are a client station in a BSS network, use the special
2710          * AP station entry (that's the only station we communicate with) */
2711         case IEEE80211_IF_TYPE_STA:
2712                 return IWL_AP_ID;
2713
2714         /* If we are an AP, then find the station, or use BCAST */
2715         case IEEE80211_IF_TYPE_AP:
2716                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2717                 if (sta_id != IWL_INVALID_STATION)
2718                         return sta_id;
2719                 return priv->hw_setting.bcast_sta_id;
2720
2721         /* If this frame is going out to an IBSS network, find the station,
2722          * or create a new station table entry */
2723         case IEEE80211_IF_TYPE_IBSS: {
2724                 DECLARE_MAC_BUF(mac);
2725
2726                 /* Create new station table entry */
2727                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2728                 if (sta_id != IWL_INVALID_STATION)
2729                         return sta_id;
2730
2731                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2732
2733                 if (sta_id != IWL_INVALID_STATION)
2734                         return sta_id;
2735
2736                 IWL_DEBUG_DROP("Station %s not in station map. "
2737                                "Defaulting to broadcast...\n",
2738                                print_mac(mac, hdr->addr1));
2739                 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2740                 return priv->hw_setting.bcast_sta_id;
2741         }
2742         default:
2743                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2744                 return priv->hw_setting.bcast_sta_id;
2745         }
2746 }
2747
2748 /*
2749  * start REPLY_TX command process
2750  */
2751 static int iwl3945_tx_skb(struct iwl3945_priv *priv,
2752                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2753 {
2754         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2755         struct iwl3945_tfd_frame *tfd;
2756         u32 *control_flags;
2757         int txq_id = ctl->queue;
2758         struct iwl3945_tx_queue *txq = NULL;
2759         struct iwl3945_queue *q = NULL;
2760         dma_addr_t phys_addr;
2761         dma_addr_t txcmd_phys;
2762         struct iwl3945_cmd *out_cmd = NULL;
2763         u16 len, idx, len_org;
2764         u8 id, hdr_len, unicast;
2765         u8 sta_id;
2766         u16 seq_number = 0;
2767         u16 fc;
2768         __le16 *qc;
2769         u8 wait_write_ptr = 0;
2770         unsigned long flags;
2771         int rc;
2772
2773         spin_lock_irqsave(&priv->lock, flags);
2774         if (iwl3945_is_rfkill(priv)) {
2775                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2776                 goto drop_unlock;
2777         }
2778
2779         if (!priv->interface_id) {
2780                 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2781                 goto drop_unlock;
2782         }
2783
2784         if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2785                 IWL_ERROR("ERROR: No TX rate available.\n");
2786                 goto drop_unlock;
2787         }
2788
2789         unicast = !is_multicast_ether_addr(hdr->addr1);
2790         id = 0;
2791
2792         fc = le16_to_cpu(hdr->frame_control);
2793
2794 #ifdef CONFIG_IWL3945_DEBUG
2795         if (ieee80211_is_auth(fc))
2796                 IWL_DEBUG_TX("Sending AUTH frame\n");
2797         else if (ieee80211_is_assoc_request(fc))
2798                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2799         else if (ieee80211_is_reassoc_request(fc))
2800                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2801 #endif
2802
2803         /* drop all data frame if we are not associated */
2804         if (!iwl3945_is_associated(priv) && !priv->assoc_id &&
2805             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2806                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2807                 goto drop_unlock;
2808         }
2809
2810         spin_unlock_irqrestore(&priv->lock, flags);
2811
2812         hdr_len = ieee80211_get_hdrlen(fc);
2813
2814         /* Find (or create) index into station table for destination station */
2815         sta_id = iwl3945_get_sta_id(priv, hdr);
2816         if (sta_id == IWL_INVALID_STATION) {
2817                 DECLARE_MAC_BUF(mac);
2818
2819                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2820                                print_mac(mac, hdr->addr1));
2821                 goto drop;
2822         }
2823
2824         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2825
2826         qc = ieee80211_get_qos_ctrl(hdr);
2827         if (qc) {
2828                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2829                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2830                                 IEEE80211_SCTL_SEQ;
2831                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2832                         (hdr->seq_ctrl &
2833                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2834                 seq_number += 0x10;
2835         }
2836
2837         /* Descriptor for chosen Tx queue */
2838         txq = &priv->txq[txq_id];
2839         q = &txq->q;
2840
2841         spin_lock_irqsave(&priv->lock, flags);
2842
2843         /* Set up first empty TFD within this queue's circular TFD buffer */
2844         tfd = &txq->bd[q->write_ptr];
2845         memset(tfd, 0, sizeof(*tfd));
2846         control_flags = (u32 *) tfd;
2847         idx = get_cmd_index(q, q->write_ptr, 0);
2848
2849         /* Set up driver data for this TFD */
2850         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2851         txq->txb[q->write_ptr].skb[0] = skb;
2852         memcpy(&(txq->txb[q->write_ptr].status.control),
2853                ctl, sizeof(struct ieee80211_tx_control));
2854
2855         /* Init first empty entry in queue's array of Tx/cmd buffers */
2856         out_cmd = &txq->cmd[idx];
2857         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2858         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2859
2860         /*
2861          * Set up the Tx-command (not MAC!) header.
2862          * Store the chosen Tx queue and TFD index within the sequence field;
2863          * after Tx, uCode's Tx response will return this value so driver can
2864          * locate the frame within the tx queue and do post-tx processing.
2865          */
2866         out_cmd->hdr.cmd = REPLY_TX;
2867         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2868                                 INDEX_TO_SEQ(q->write_ptr)));
2869
2870         /* Copy MAC header from skb into command buffer */
2871         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2872
2873         /*
2874          * Use the first empty entry in this queue's command buffer array
2875          * to contain the Tx command and MAC header concatenated together
2876          * (payload data will be in another buffer).
2877          * Size of this varies, due to varying MAC header length.
2878          * If end is not dword aligned, we'll have 2 extra bytes at the end
2879          * of the MAC header (device reads on dword boundaries).
2880          * We'll tell device about this padding later.
2881          */
2882         len = priv->hw_setting.tx_cmd_len +
2883                 sizeof(struct iwl3945_cmd_header) + hdr_len;
2884
2885         len_org = len;
2886         len = (len + 3) & ~3;
2887
2888         if (len_org != len)
2889                 len_org = 1;
2890         else
2891                 len_org = 0;
2892
2893         /* Physical address of this Tx command's header (not MAC header!),
2894          * within command buffer array. */
2895         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2896                      offsetof(struct iwl3945_cmd, hdr);
2897
2898         /* Add buffer containing Tx command and MAC(!) header to TFD's
2899          * first entry */
2900         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2901
2902         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2903                 iwl3945_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2904
2905         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2906          * if any (802.11 null frames have no payload). */
2907         len = skb->len - hdr_len;
2908         if (len) {
2909                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2910                                            len, PCI_DMA_TODEVICE);
2911                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2912         }
2913
2914         if (!len)
2915                 /* If there is no payload, then we use only one Tx buffer */
2916                 *control_flags = TFD_CTL_COUNT_SET(1);
2917         else
2918                 /* Else use 2 buffers.
2919                  * Tell 3945 about any padding after MAC header */
2920                 *control_flags = TFD_CTL_COUNT_SET(2) |
2921                         TFD_CTL_PAD_SET(U32_PAD(len));
2922
2923         /* Total # bytes to be transmitted */
2924         len = (u16)skb->len;
2925         out_cmd->cmd.tx.len = cpu_to_le16(len);
2926
2927         /* TODO need this for burst mode later on */
2928         iwl3945_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2929
2930         /* set is_hcca to 0; it probably will never be implemented */
2931         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2932
2933         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2934         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2935
2936         if (!ieee80211_get_morefrag(hdr)) {
2937                 txq->need_update = 1;
2938                 if (qc) {
2939                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2940                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2941                 }
2942         } else {
2943                 wait_write_ptr = 1;
2944                 txq->need_update = 0;
2945         }
2946
2947         iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2948                            sizeof(out_cmd->cmd.tx));
2949
2950         iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2951                            ieee80211_get_hdrlen(fc));
2952
2953         /* Tell device the write index *just past* this latest filled TFD */
2954         q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
2955         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2956         spin_unlock_irqrestore(&priv->lock, flags);
2957
2958         if (rc)
2959                 return rc;
2960
2961         if ((iwl3945_queue_space(q) < q->high_mark)
2962             && priv->mac80211_registered) {
2963                 if (wait_write_ptr) {
2964                         spin_lock_irqsave(&priv->lock, flags);
2965                         txq->need_update = 1;
2966                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2967                         spin_unlock_irqrestore(&priv->lock, flags);
2968                 }
2969
2970                 ieee80211_stop_queue(priv->hw, ctl->queue);
2971         }
2972
2973         return 0;
2974
2975 drop_unlock:
2976         spin_unlock_irqrestore(&priv->lock, flags);
2977 drop:
2978         return -1;
2979 }
2980
2981 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2982 {
2983         const struct ieee80211_hw_mode *hw = NULL;
2984         struct ieee80211_rate *rate;
2985         int i;
2986
2987         hw = iwl3945_get_hw_mode(priv, priv->phymode);
2988         if (!hw) {
2989                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2990                 return;
2991         }
2992
2993         priv->active_rate = 0;
2994         priv->active_rate_basic = 0;
2995
2996         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
2997                        hw->mode == MODE_IEEE80211A ?
2998                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
2999
3000         for (i = 0; i < hw->num_rates; i++) {
3001                 rate = &(hw->rates[i]);
3002                 if ((rate->val < IWL_RATE_COUNT) &&
3003                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3004                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3005                                        rate->val, iwl3945_rates[rate->val].plcp,
3006                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3007                                        "*" : "");
3008                         priv->active_rate |= (1 << rate->val);
3009                         if (rate->flags & IEEE80211_RATE_BASIC)
3010                                 priv->active_rate_basic |= (1 << rate->val);
3011                 } else
3012                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3013                                        rate->val, iwl3945_rates[rate->val].plcp);
3014         }
3015
3016         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3017                        priv->active_rate, priv->active_rate_basic);
3018
3019         /*
3020          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3021          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3022          * OFDM
3023          */
3024         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3025                 priv->staging_rxon.cck_basic_rates =
3026                     ((priv->active_rate_basic &
3027                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3028         else
3029                 priv->staging_rxon.cck_basic_rates =
3030                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3031
3032         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3033                 priv->staging_rxon.ofdm_basic_rates =
3034                     ((priv->active_rate_basic &
3035                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3036                       IWL_FIRST_OFDM_RATE) & 0xFF;
3037         else
3038                 priv->staging_rxon.ofdm_basic_rates =
3039                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3040 }
3041
3042 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
3043 {
3044         unsigned long flags;
3045
3046         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3047                 return;
3048
3049         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3050                           disable_radio ? "OFF" : "ON");
3051
3052         if (disable_radio) {
3053                 iwl3945_scan_cancel(priv);
3054                 /* FIXME: This is a workaround for AP */
3055                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3056                         spin_lock_irqsave(&priv->lock, flags);
3057                         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3058                                     CSR_UCODE_SW_BIT_RFKILL);
3059                         spin_unlock_irqrestore(&priv->lock, flags);
3060                         iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3061                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3062                 }
3063                 return;
3064         }
3065
3066         spin_lock_irqsave(&priv->lock, flags);
3067         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3068
3069         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3070         spin_unlock_irqrestore(&priv->lock, flags);
3071
3072         /* wake up ucode */
3073         msleep(10);
3074
3075         spin_lock_irqsave(&priv->lock, flags);
3076         iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3077         if (!iwl3945_grab_nic_access(priv))
3078                 iwl3945_release_nic_access(priv);
3079         spin_unlock_irqrestore(&priv->lock, flags);
3080
3081         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3082                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3083                                   "disabled by HW switch\n");
3084                 return;
3085         }
3086
3087         queue_work(priv->workqueue, &priv->restart);
3088         return;
3089 }
3090
3091 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
3092                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3093 {
3094         u16 fc =
3095             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3096
3097         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3098                 return;
3099
3100         if (!(fc & IEEE80211_FCTL_PROTECTED))
3101                 return;
3102
3103         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3104         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3105         case RX_RES_STATUS_SEC_TYPE_TKIP:
3106                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3107                     RX_RES_STATUS_BAD_ICV_MIC)
3108                         stats->flag |= RX_FLAG_MMIC_ERROR;
3109         case RX_RES_STATUS_SEC_TYPE_WEP:
3110         case RX_RES_STATUS_SEC_TYPE_CCMP:
3111                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3112                     RX_RES_STATUS_DECRYPT_OK) {
3113                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3114                         stats->flag |= RX_FLAG_DECRYPTED;
3115                 }
3116                 break;
3117
3118         default:
3119                 break;
3120         }
3121 }
3122
3123 void iwl3945_handle_data_packet_monitor(struct iwl3945_priv *priv,
3124                                     struct iwl3945_rx_mem_buffer *rxb,
3125                                     void *data, short len,
3126                                     struct ieee80211_rx_status *stats,
3127                                     u16 phy_flags)
3128 {
3129         struct iwl3945_rt_rx_hdr *iwl3945_rt;
3130
3131         /* First cache any information we need before we overwrite
3132          * the information provided in the skb from the hardware */
3133         s8 signal = stats->ssi;
3134         s8 noise = 0;
3135         int rate = stats->rate;
3136         u64 tsf = stats->mactime;
3137         __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3138
3139         /* We received data from the HW, so stop the watchdog */
3140         if (len > IWL_RX_BUF_SIZE - sizeof(*iwl3945_rt)) {
3141                 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3142                 return;
3143         }
3144
3145         /* copy the frame data to write after where the radiotap header goes */
3146         iwl3945_rt = (void *)rxb->skb->data;
3147         memmove(iwl3945_rt->payload, data, len);
3148
3149         iwl3945_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3150         iwl3945_rt->rt_hdr.it_pad = 0; /* always good to zero */
3151
3152         /* total header + data */
3153         iwl3945_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl3945_rt));
3154
3155         /* Set the size of the skb to the size of the frame */
3156         skb_put(rxb->skb, sizeof(*iwl3945_rt) + len);
3157
3158         /* Big bitfield of all the fields we provide in radiotap */
3159         iwl3945_rt->rt_hdr.it_present =
3160             cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3161                         (1 << IEEE80211_RADIOTAP_FLAGS) |
3162                         (1 << IEEE80211_RADIOTAP_RATE) |
3163                         (1 << IEEE80211_RADIOTAP_CHANNEL) |
3164                         (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3165                         (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3166                         (1 << IEEE80211_RADIOTAP_ANTENNA));
3167
3168         /* Zero the flags, we'll add to them as we go */
3169         iwl3945_rt->rt_flags = 0;
3170
3171         iwl3945_rt->rt_tsf = cpu_to_le64(tsf);
3172
3173         /* Convert to dBm */
3174         iwl3945_rt->rt_dbmsignal = signal;
3175         iwl3945_rt->rt_dbmnoise = noise;
3176
3177         /* Convert the channel frequency and set the flags */
3178         iwl3945_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3179         if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3180                 iwl3945_rt->rt_chbitmask =
3181                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3182         else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3183                 iwl3945_rt->rt_chbitmask =
3184                     cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3185         else    /* 802.11g */
3186                 iwl3945_rt->rt_chbitmask =
3187                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3188
3189         rate = iwl3945_rate_index_from_plcp(rate);
3190         if (rate == -1)
3191                 iwl3945_rt->rt_rate = 0;
3192         else
3193                 iwl3945_rt->rt_rate = iwl3945_rates[rate].ieee;
3194
3195         /* antenna number */
3196         iwl3945_rt->rt_antenna =
3197                 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3198
3199         /* set the preamble flag if we have it */
3200         if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3201                 iwl3945_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3202
3203         IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3204
3205         stats->flag |= RX_FLAG_RADIOTAP;
3206         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3207         rxb->skb = NULL;
3208 }
3209
3210
3211 #define IWL_PACKET_RETRY_TIME HZ
3212
3213 int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
3214 {
3215         u16 sc = le16_to_cpu(header->seq_ctrl);
3216         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3217         u16 frag = sc & IEEE80211_SCTL_FRAG;
3218         u16 *last_seq, *last_frag;
3219         unsigned long *last_time;
3220
3221         switch (priv->iw_mode) {
3222         case IEEE80211_IF_TYPE_IBSS:{
3223                 struct list_head *p;
3224                 struct iwl3945_ibss_seq *entry = NULL;
3225                 u8 *mac = header->addr2;
3226                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3227
3228                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3229                         entry = list_entry(p, struct iwl3945_ibss_seq, list);
3230                         if (!compare_ether_addr(entry->mac, mac))
3231                                 break;
3232                 }
3233                 if (p == &priv->ibss_mac_hash[index]) {
3234                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3235                         if (!entry) {
3236                                 IWL_ERROR("Cannot malloc new mac entry\n");
3237                                 return 0;
3238                         }
3239                         memcpy(entry->mac, mac, ETH_ALEN);
3240                         entry->seq_num = seq;
3241                         entry->frag_num = frag;
3242                         entry->packet_time = jiffies;
3243                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3244                         return 0;
3245                 }
3246                 last_seq = &entry->seq_num;
3247                 last_frag = &entry->frag_num;
3248                 last_time = &entry->packet_time;
3249                 break;
3250         }
3251         case IEEE80211_IF_TYPE_STA:
3252                 last_seq = &priv->last_seq_num;
3253                 last_frag = &priv->last_frag_num;
3254                 last_time = &priv->last_packet_time;
3255                 break;
3256         default:
3257                 return 0;
3258         }
3259         if ((*last_seq == seq) &&
3260             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3261                 if (*last_frag == frag)
3262                         goto drop;
3263                 if (*last_frag + 1 != frag)
3264                         /* out-of-order fragment */
3265                         goto drop;
3266         } else
3267                 *last_seq = seq;
3268
3269         *last_frag = frag;
3270         *last_time = jiffies;
3271         return 0;
3272
3273  drop:
3274         return 1;
3275 }
3276
3277 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3278
3279 #include "iwl-spectrum.h"
3280
3281 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3282 #define BEACON_TIME_MASK_HIGH   0xFF000000
3283 #define TIME_UNIT               1024
3284
3285 /*
3286  * extended beacon time format
3287  * time in usec will be changed into a 32-bit value in 8:24 format
3288  * the high 1 byte is the beacon counts
3289  * the lower 3 bytes is the time in usec within one beacon interval
3290  */
3291
3292 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
3293 {
3294         u32 quot;
3295         u32 rem;
3296         u32 interval = beacon_interval * 1024;
3297
3298         if (!interval || !usec)
3299                 return 0;
3300
3301         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3302         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3303
3304         return (quot << 24) + rem;
3305 }
3306
3307 /* base is usually what we get from ucode with each received frame,
3308  * the same as HW timer counter counting down
3309  */
3310
3311 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3312 {
3313         u32 base_low = base & BEACON_TIME_MASK_LOW;
3314         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3315         u32 interval = beacon_interval * TIME_UNIT;
3316         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3317             (addon & BEACON_TIME_MASK_HIGH);
3318
3319         if (base_low > addon_low)
3320                 res += base_low - addon_low;
3321         else if (base_low < addon_low) {
3322                 res += interval + base_low - addon_low;
3323                 res += (1 << 24);
3324         } else
3325                 res += (1 << 24);
3326
3327         return cpu_to_le32(res);
3328 }
3329
3330 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
3331                                struct ieee80211_measurement_params *params,
3332                                u8 type)
3333 {
3334         struct iwl3945_spectrum_cmd spectrum;
3335         struct iwl3945_rx_packet *res;
3336         struct iwl3945_host_cmd cmd = {
3337                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3338                 .data = (void *)&spectrum,
3339                 .meta.flags = CMD_WANT_SKB,
3340         };
3341         u32 add_time = le64_to_cpu(params->start_time);
3342         int rc;
3343         int spectrum_resp_status;
3344         int duration = le16_to_cpu(params->duration);
3345
3346         if (iwl3945_is_associated(priv))
3347                 add_time =
3348                     iwl3945_usecs_to_beacons(
3349                         le64_to_cpu(params->start_time) - priv->last_tsf,
3350                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3351
3352         memset(&spectrum, 0, sizeof(spectrum));
3353
3354         spectrum.channel_count = cpu_to_le16(1);
3355         spectrum.flags =
3356             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3357         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3358         cmd.len = sizeof(spectrum);
3359         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3360
3361         if (iwl3945_is_associated(priv))
3362                 spectrum.start_time =
3363                     iwl3945_add_beacon_time(priv->last_beacon_time,
3364                                 add_time,
3365                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3366         else
3367                 spectrum.start_time = 0;
3368
3369         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3370         spectrum.channels[0].channel = params->channel;
3371         spectrum.channels[0].type = type;
3372         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3373                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3374                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3375
3376         rc = iwl3945_send_cmd_sync(priv, &cmd);
3377         if (rc)
3378                 return rc;
3379
3380         res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
3381         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3382                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3383                 rc = -EIO;
3384         }
3385
3386         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3387         switch (spectrum_resp_status) {
3388         case 0:         /* Command will be handled */
3389                 if (res->u.spectrum.id != 0xff) {
3390                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
3391                                                 res->u.spectrum.id);
3392                         priv->measurement_status &= ~MEASUREMENT_READY;
3393                 }
3394                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3395                 rc = 0;
3396                 break;
3397
3398         case 1:         /* Command will not be handled */
3399                 rc = -EAGAIN;
3400                 break;
3401         }
3402
3403         dev_kfree_skb_any(cmd.meta.u.skb);
3404
3405         return rc;
3406 }
3407 #endif
3408
3409 static void iwl3945_txstatus_to_ieee(struct iwl3945_priv *priv,
3410                                  struct iwl3945_tx_info *tx_sta)
3411 {
3412
3413         tx_sta->status.ack_signal = 0;
3414         tx_sta->status.excessive_retries = 0;
3415         tx_sta->status.queue_length = 0;
3416         tx_sta->status.queue_number = 0;
3417
3418         if (in_interrupt())
3419                 ieee80211_tx_status_irqsafe(priv->hw,
3420                                             tx_sta->skb[0], &(tx_sta->status));
3421         else
3422                 ieee80211_tx_status(priv->hw,
3423                                     tx_sta->skb[0], &(tx_sta->status));
3424
3425         tx_sta->skb[0] = NULL;
3426 }
3427
3428 /**
3429  * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3430  *
3431  * When FW advances 'R' index, all entries between old and new 'R' index
3432  * need to be reclaimed. As result, some free space forms. If there is
3433  * enough free space (> low mark), wake the stack that feeds us.
3434  */
3435 static int iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv, int txq_id, int index)
3436 {
3437         struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3438         struct iwl3945_queue *q = &txq->q;
3439         int nfreed = 0;
3440
3441         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3442                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3443                           "is out of range [0-%d] %d %d.\n", txq_id,
3444                           index, q->n_bd, q->write_ptr, q->read_ptr);
3445                 return 0;
3446         }
3447
3448         for (index = iwl3945_queue_inc_wrap(index, q->n_bd);
3449                 q->read_ptr != index;
3450                 q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3451                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3452                         iwl3945_txstatus_to_ieee(priv,
3453                                         &(txq->txb[txq->q.read_ptr]));
3454                         iwl3945_hw_txq_free_tfd(priv, txq);
3455                 } else if (nfreed > 1) {
3456                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3457                                         q->write_ptr, q->read_ptr);
3458                         queue_work(priv->workqueue, &priv->restart);
3459                 }
3460                 nfreed++;
3461         }
3462
3463         if (iwl3945_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3464                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3465                         priv->mac80211_registered)
3466                 ieee80211_wake_queue(priv->hw, txq_id);
3467
3468
3469         return nfreed;
3470 }
3471
3472 static int iwl3945_is_tx_success(u32 status)
3473 {
3474         return (status & 0xFF) == 0x1;
3475 }
3476
3477 /******************************************************************************
3478  *
3479  * Generic RX handler implementations
3480  *
3481  ******************************************************************************/
3482 /**
3483  * iwl3945_rx_reply_tx - Handle Tx response
3484  */
3485 static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
3486                             struct iwl3945_rx_mem_buffer *rxb)
3487 {
3488         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3489         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3490         int txq_id = SEQ_TO_QUEUE(sequence);
3491         int index = SEQ_TO_INDEX(sequence);
3492         struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3493         struct ieee80211_tx_status *tx_status;
3494         struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3495         u32  status = le32_to_cpu(tx_resp->status);
3496
3497         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3498                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3499                           "is out of range [0-%d] %d %d\n", txq_id,
3500                           index, txq->q.n_bd, txq->q.write_ptr,
3501                           txq->q.read_ptr);
3502                 return;
3503         }
3504
3505         tx_status = &(txq->txb[txq->q.read_ptr].status);
3506
3507         tx_status->retry_count = tx_resp->failure_frame;
3508         tx_status->queue_number = status;
3509         tx_status->queue_length = tx_resp->bt_kill_count;
3510         tx_status->queue_length |= tx_resp->failure_rts;
3511
3512         tx_status->flags =
3513             iwl3945_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3514
3515         tx_status->control.tx_rate = iwl3945_rate_index_from_plcp(tx_resp->rate);
3516
3517         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
3518                         txq_id, iwl3945_get_tx_fail_reason(status), status,
3519                         tx_resp->rate, tx_resp->failure_frame);
3520
3521         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3522         if (index != -1)
3523                 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3524
3525         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3526                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3527 }
3528
3529
3530 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
3531                                struct iwl3945_rx_mem_buffer *rxb)
3532 {
3533         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3534         struct iwl3945_alive_resp *palive;
3535         struct delayed_work *pwork;
3536
3537         palive = &pkt->u.alive_frame;
3538
3539         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3540                        "0x%01X 0x%01X\n",
3541                        palive->is_valid, palive->ver_type,
3542                        palive->ver_subtype);
3543
3544         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3545                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3546                 memcpy(&priv->card_alive_init,
3547                        &pkt->u.alive_frame,
3548                        sizeof(struct iwl3945_init_alive_resp));
3549                 pwork = &priv->init_alive_start;
3550         } else {
3551                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3552                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3553                        sizeof(struct iwl3945_alive_resp));
3554                 pwork = &priv->alive_start;
3555                 iwl3945_disable_events(priv);
3556         }
3557
3558         /* We delay the ALIVE response by 5ms to
3559          * give the HW RF Kill time to activate... */
3560         if (palive->is_valid == UCODE_VALID_OK)
3561                 queue_delayed_work(priv->workqueue, pwork,
3562                                    msecs_to_jiffies(5));
3563         else
3564                 IWL_WARNING("uCode did not respond OK.\n");
3565 }
3566
3567 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
3568                                  struct iwl3945_rx_mem_buffer *rxb)
3569 {
3570         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3571
3572         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3573         return;
3574 }
3575
3576 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
3577                                struct iwl3945_rx_mem_buffer *rxb)
3578 {
3579         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3580
3581         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3582                 "seq 0x%04X ser 0x%08X\n",
3583                 le32_to_cpu(pkt->u.err_resp.error_type),
3584                 get_cmd_string(pkt->u.err_resp.cmd_id),
3585                 pkt->u.err_resp.cmd_id,
3586                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3587                 le32_to_cpu(pkt->u.err_resp.error_info));
3588 }
3589
3590 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3591
3592 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3593 {
3594         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3595         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3596         struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
3597         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3598                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3599         rxon->channel = csa->channel;
3600         priv->staging_rxon.channel = csa->channel;
3601 }
3602
3603 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3604                                           struct iwl3945_rx_mem_buffer *rxb)
3605 {
3606 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3607         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3608         struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
3609
3610         if (!report->state) {
3611                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3612                           "Spectrum Measure Notification: Start\n");
3613                 return;
3614         }
3615
3616         memcpy(&priv->measure_report, report, sizeof(*report));
3617         priv->measurement_status |= MEASUREMENT_READY;
3618 #endif
3619 }
3620
3621 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3622                                   struct iwl3945_rx_mem_buffer *rxb)
3623 {
3624 #ifdef CONFIG_IWL3945_DEBUG
3625         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3626         struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
3627         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3628                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3629 #endif
3630 }
3631
3632 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3633                                              struct iwl3945_rx_mem_buffer *rxb)
3634 {
3635         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3636         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3637                         "notification for %s:\n",
3638                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3639         iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3640 }
3641
3642 static void iwl3945_bg_beacon_update(struct work_struct *work)
3643 {
3644         struct iwl3945_priv *priv =
3645                 container_of(work, struct iwl3945_priv, beacon_update);
3646         struct sk_buff *beacon;
3647
3648         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3649         beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3650
3651         if (!beacon) {
3652                 IWL_ERROR("update beacon failed\n");
3653                 return;
3654         }
3655
3656         mutex_lock(&priv->mutex);
3657         /* new beacon skb is allocated every time; dispose previous.*/
3658         if (priv->ibss_beacon)
3659                 dev_kfree_skb(priv->ibss_beacon);
3660
3661         priv->ibss_beacon = beacon;
3662         mutex_unlock(&priv->mutex);
3663
3664         iwl3945_send_beacon_cmd(priv);
3665 }
3666
3667 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3668                                 struct iwl3945_rx_mem_buffer *rxb)
3669 {
3670 #ifdef CONFIG_IWL3945_DEBUG
3671         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3672         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3673         u8 rate = beacon->beacon_notify_hdr.rate;
3674
3675         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3676                 "tsf %d %d rate %d\n",
3677                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3678                 beacon->beacon_notify_hdr.failure_frame,
3679                 le32_to_cpu(beacon->ibss_mgr_status),
3680                 le32_to_cpu(beacon->high_tsf),
3681                 le32_to_cpu(beacon->low_tsf), rate);
3682 #endif
3683
3684         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3685             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3686                 queue_work(priv->workqueue, &priv->beacon_update);
3687 }
3688
3689 /* Service response to REPLY_SCAN_CMD (0x80) */
3690 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3691                               struct iwl3945_rx_mem_buffer *rxb)
3692 {
3693 #ifdef CONFIG_IWL3945_DEBUG
3694         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3695         struct iwl3945_scanreq_notification *notif =
3696             (struct iwl3945_scanreq_notification *)pkt->u.raw;
3697
3698         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3699 #endif
3700 }
3701
3702 /* Service SCAN_START_NOTIFICATION (0x82) */
3703 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3704                                     struct iwl3945_rx_mem_buffer *rxb)
3705 {
3706         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3707         struct iwl3945_scanstart_notification *notif =
3708             (struct iwl3945_scanstart_notification *)pkt->u.raw;
3709         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3710         IWL_DEBUG_SCAN("Scan start: "
3711                        "%d [802.11%s] "
3712                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3713                        notif->channel,
3714                        notif->band ? "bg" : "a",
3715                        notif->tsf_high,
3716                        notif->tsf_low, notif->status, notif->beacon_timer);
3717 }
3718
3719 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3720 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3721                                       struct iwl3945_rx_mem_buffer *rxb)
3722 {
3723         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3724         struct iwl3945_scanresults_notification *notif =
3725             (struct iwl3945_scanresults_notification *)pkt->u.raw;
3726
3727         IWL_DEBUG_SCAN("Scan ch.res: "
3728                        "%d [802.11%s] "
3729                        "(TSF: 0x%08X:%08X) - %d "
3730                        "elapsed=%lu usec (%dms since last)\n",
3731                        notif->channel,
3732                        notif->band ? "bg" : "a",
3733                        le32_to_cpu(notif->tsf_high),
3734                        le32_to_cpu(notif->tsf_low),
3735                        le32_to_cpu(notif->statistics[0]),
3736                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3737                        jiffies_to_msecs(elapsed_jiffies
3738                                         (priv->last_scan_jiffies, jiffies)));
3739
3740         priv->last_scan_jiffies = jiffies;
3741         priv->next_scan_jiffies = 0;
3742 }
3743
3744 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3745 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3746                                        struct iwl3945_rx_mem_buffer *rxb)
3747 {
3748         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3749         struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3750
3751         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3752                        scan_notif->scanned_channels,
3753                        scan_notif->tsf_low,
3754                        scan_notif->tsf_high, scan_notif->status);
3755
3756         /* The HW is no longer scanning */
3757         clear_bit(STATUS_SCAN_HW, &priv->status);
3758
3759         /* The scan completion notification came in, so kill that timer... */
3760         cancel_delayed_work(&priv->scan_check);
3761
3762         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3763                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3764                        jiffies_to_msecs(elapsed_jiffies
3765                                         (priv->scan_pass_start, jiffies)));
3766
3767         /* Remove this scanned band from the list
3768          * of pending bands to scan */
3769         priv->scan_bands--;
3770
3771         /* If a request to abort was given, or the scan did not succeed
3772          * then we reset the scan state machine and terminate,
3773          * re-queuing another scan if one has been requested */
3774         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3775                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3776                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3777         } else {
3778                 /* If there are more bands on this scan pass reschedule */
3779                 if (priv->scan_bands > 0)
3780                         goto reschedule;
3781         }
3782
3783         priv->last_scan_jiffies = jiffies;
3784         priv->next_scan_jiffies = 0;
3785         IWL_DEBUG_INFO("Setting scan to off\n");
3786
3787         clear_bit(STATUS_SCANNING, &priv->status);
3788
3789         IWL_DEBUG_INFO("Scan took %dms\n",
3790                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3791
3792         queue_work(priv->workqueue, &priv->scan_completed);
3793
3794         return;
3795
3796 reschedule:
3797         priv->scan_pass_start = jiffies;
3798         queue_work(priv->workqueue, &priv->request_scan);
3799 }
3800
3801 /* Handle notification from uCode that card's power state is changing
3802  * due to software, hardware, or critical temperature RFKILL */
3803 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3804                                     struct iwl3945_rx_mem_buffer *rxb)
3805 {
3806         struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3807         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3808         unsigned long status = priv->status;
3809
3810         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3811                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3812                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3813
3814         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3815                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3816
3817         if (flags & HW_CARD_DISABLED)
3818                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3819         else
3820                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3821
3822
3823         if (flags & SW_CARD_DISABLED)
3824                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3825         else
3826                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3827
3828         iwl3945_scan_cancel(priv);
3829
3830         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3831              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3832             (test_bit(STATUS_RF_KILL_SW, &status) !=
3833              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3834                 queue_work(priv->workqueue, &priv->rf_kill);
3835         else
3836                 wake_up_interruptible(&priv->wait_command_queue);
3837 }
3838
3839 /**
3840  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3841  *
3842  * Setup the RX handlers for each of the reply types sent from the uCode
3843  * to the host.
3844  *
3845  * This function chains into the hardware specific files for them to setup
3846  * any hardware specific handlers as well.
3847  */
3848 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3849 {
3850         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3851         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3852         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3853         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3854         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3855             iwl3945_rx_spectrum_measure_notif;
3856         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3857         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3858             iwl3945_rx_pm_debug_statistics_notif;
3859         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3860
3861         /*
3862          * The same handler is used for both the REPLY to a discrete
3863          * statistics request from the host as well as for the periodic
3864          * statistics notifications (after received beacons) from the uCode.
3865          */
3866         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3867         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3868
3869         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3870         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3871         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3872             iwl3945_rx_scan_results_notif;
3873         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3874             iwl3945_rx_scan_complete_notif;
3875         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3876         priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
3877
3878         /* Set up hardware specific Rx handlers */
3879         iwl3945_hw_rx_handler_setup(priv);
3880 }
3881
3882 /**
3883  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3884  * @rxb: Rx buffer to reclaim
3885  *
3886  * If an Rx buffer has an async callback associated with it the callback
3887  * will be executed.  The attached skb (if present) will only be freed
3888  * if the callback returns 1
3889  */
3890 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3891                                 struct iwl3945_rx_mem_buffer *rxb)
3892 {
3893         struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3894         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3895         int txq_id = SEQ_TO_QUEUE(sequence);
3896         int index = SEQ_TO_INDEX(sequence);
3897         int huge = sequence & SEQ_HUGE_FRAME;
3898         int cmd_index;
3899         struct iwl3945_cmd *cmd;
3900
3901         /* If a Tx command is being handled and it isn't in the actual
3902          * command queue then there a command routing bug has been introduced
3903          * in the queue management code. */
3904         if (txq_id != IWL_CMD_QUEUE_NUM)
3905                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3906                           txq_id, pkt->hdr.cmd);
3907         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3908
3909         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3910         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3911
3912         /* Input error checking is done when commands are added to queue. */
3913         if (cmd->meta.flags & CMD_WANT_SKB) {
3914                 cmd->meta.source->u.skb = rxb->skb;
3915                 rxb->skb = NULL;
3916         } else if (cmd->meta.u.callback &&
3917                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3918                 rxb->skb = NULL;
3919
3920         iwl3945_tx_queue_reclaim(priv, txq_id, index);
3921
3922         if (!(cmd->meta.flags & CMD_ASYNC)) {
3923                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3924                 wake_up_interruptible(&priv->wait_command_queue);
3925         }
3926 }
3927
3928 /************************** RX-FUNCTIONS ****************************/
3929 /*
3930  * Rx theory of operation
3931  *
3932  * The host allocates 32 DMA target addresses and passes the host address
3933  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3934  * 0 to 31
3935  *
3936  * Rx Queue Indexes
3937  * The host/firmware share two index registers for managing the Rx buffers.
3938  *
3939  * The READ index maps to the first position that the firmware may be writing
3940  * to -- the driver can read up to (but not including) this position and get
3941  * good data.
3942  * The READ index is managed by the firmware once the card is enabled.
3943  *
3944  * The WRITE index maps to the last position the driver has read from -- the
3945  * position preceding WRITE is the last slot the firmware can place a packet.
3946  *
3947  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3948  * WRITE = READ.
3949  *
3950  * During initialization, the host sets up the READ queue position to the first
3951  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3952  *
3953  * When the firmware places a packet in a buffer, it will advance the READ index
3954  * and fire the RX interrupt.  The driver can then query the READ index and
3955  * process as many packets as possible, moving the WRITE index forward as it
3956  * resets the Rx queue buffers with new memory.
3957  *
3958  * The management in the driver is as follows:
3959  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3960  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3961  *   to replenish the iwl->rxq->rx_free.
3962  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3963  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3964  *   'processed' and 'read' driver indexes as well)
3965  * + A received packet is processed and handed to the kernel network stack,
3966  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3967  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3968  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3969  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3970  *   were enough free buffers and RX_STALLED is set it is cleared.
3971  *
3972  *
3973  * Driver sequence:
3974  *
3975  * iwl3945_rx_queue_alloc()   Allocates rx_free
3976  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3977  *                            iwl3945_rx_queue_restock
3978  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3979  *                            queue, updates firmware pointers, and updates
3980  *                            the WRITE index.  If insufficient rx_free buffers
3981  *                            are available, schedules iwl3945_rx_replenish
3982  *
3983  * -- enable interrupts --
3984  * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
3985  *                            READ INDEX, detaching the SKB from the pool.
3986  *                            Moves the packet buffer from queue to rx_used.
3987  *                            Calls iwl3945_rx_queue_restock to refill any empty
3988  *                            slots.
3989  * ...
3990  *
3991  */
3992
3993 /**
3994  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3995  */
3996 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3997 {
3998         int s = q->read - q->write;
3999         if (s <= 0)
4000                 s += RX_QUEUE_SIZE;
4001         /* keep some buffer to not confuse full and empty queue */
4002         s -= 2;
4003         if (s < 0)
4004                 s = 0;
4005         return s;
4006 }
4007
4008 /**
4009  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4010  */
4011 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
4012 {
4013         u32 reg = 0;
4014         int rc = 0;
4015         unsigned long flags;
4016
4017         spin_lock_irqsave(&q->lock, flags);
4018
4019         if (q->need_update == 0)
4020                 goto exit_unlock;
4021
4022         /* If power-saving is in use, make sure device is awake */
4023         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4024                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4025
4026                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4027                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
4028                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4029                         goto exit_unlock;
4030                 }
4031
4032                 rc = iwl3945_grab_nic_access(priv);
4033                 if (rc)
4034                         goto exit_unlock;
4035
4036                 /* Device expects a multiple of 8 */
4037                 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4038                                      q->write & ~0x7);
4039                 iwl3945_release_nic_access(priv);
4040
4041         /* Else device is assumed to be awake */
4042         } else
4043                 /* Device expects a multiple of 8 */
4044                 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4045
4046
4047         q->need_update = 0;
4048
4049  exit_unlock:
4050         spin_unlock_irqrestore(&q->lock, flags);
4051         return rc;
4052 }
4053
4054 /**
4055  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4056  */
4057 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
4058                                           dma_addr_t dma_addr)
4059 {
4060         return cpu_to_le32((u32)dma_addr);
4061 }
4062
4063 /**
4064  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
4065  *
4066  * If there are slots in the RX queue that need to be restocked,
4067  * and we have free pre-allocated buffers, fill the ranks as much
4068  * as we can, pulling from rx_free.
4069  *
4070  * This moves the 'write' index forward to catch up with 'processed', and
4071  * also updates the memory address in the firmware to reference the new
4072  * target buffer.
4073  */
4074 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
4075 {
4076         struct iwl3945_rx_queue *rxq = &priv->rxq;
4077         struct list_head *element;
4078         struct iwl3945_rx_mem_buffer *rxb;
4079         unsigned long flags;
4080         int write, rc;
4081
4082         spin_lock_irqsave(&rxq->lock, flags);
4083         write = rxq->write & ~0x7;
4084         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4085                 /* Get next free Rx buffer, remove from free list */
4086                 element = rxq->rx_free.next;
4087                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
4088                 list_del(element);
4089
4090                 /* Point to Rx buffer via next RBD in circular buffer */
4091                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4092                 rxq->queue[rxq->write] = rxb;
4093                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4094                 rxq->free_count--;
4095         }
4096         spin_unlock_irqrestore(&rxq->lock, flags);
4097         /* If the pre-allocated buffer pool is dropping low, schedule to
4098          * refill it */
4099         if (rxq->free_count <= RX_LOW_WATERMARK)
4100                 queue_work(priv->workqueue, &priv->rx_replenish);
4101
4102
4103         /* If we've added more space for the firmware to place data, tell it.
4104          * Increment device's write pointer in multiples of 8. */
4105         if ((write != (rxq->write & ~0x7))
4106             || (abs(rxq->write - rxq->read) > 7)) {
4107                 spin_lock_irqsave(&rxq->lock, flags);
4108                 rxq->need_update = 1;
4109                 spin_unlock_irqrestore(&rxq->lock, flags);
4110                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
4111                 if (rc)
4112                         return rc;
4113         }
4114
4115         return 0;
4116 }
4117
4118 /**
4119  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
4120  *
4121  * When moving to rx_free an SKB is allocated for the slot.
4122  *
4123  * Also restock the Rx queue via iwl3945_rx_queue_restock.
4124  * This is called as a scheduled work item (except for during initialization)
4125  */
4126 void iwl3945_rx_replenish(void *data)
4127 {
4128         struct iwl3945_priv *priv = data;
4129         struct iwl3945_rx_queue *rxq = &priv->rxq;
4130         struct list_head *element;
4131         struct iwl3945_rx_mem_buffer *rxb;
4132         unsigned long flags;
4133         spin_lock_irqsave(&rxq->lock, flags);
4134         while (!list_empty(&rxq->rx_used)) {
4135                 element = rxq->rx_used.next;
4136                 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
4137
4138                 /* Alloc a new receive buffer */
4139                 rxb->skb =
4140                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4141                 if (!rxb->skb) {
4142                         if (net_ratelimit())
4143                                 printk(KERN_CRIT DRV_NAME
4144                                        ": Can not allocate SKB buffers\n");
4145                         /* We don't reschedule replenish work here -- we will
4146                          * call the restock method and if it still needs
4147                          * more buffers it will schedule replenish */
4148                         break;
4149                 }
4150                 priv->alloc_rxb_skb++;
4151                 list_del(element);
4152
4153                 /* Get physical address of RB/SKB */
4154                 rxb->dma_addr =
4155                     pci_map_single(priv->pci_dev, rxb->skb->data,
4156                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4157                 list_add_tail(&rxb->list, &rxq->rx_free);
4158                 rxq->free_count++;
4159         }
4160         spin_unlock_irqrestore(&rxq->lock, flags);
4161
4162         spin_lock_irqsave(&priv->lock, flags);
4163         iwl3945_rx_queue_restock(priv);
4164         spin_unlock_irqrestore(&priv->lock, flags);
4165 }
4166
4167 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4168  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4169  * This free routine walks the list of POOL entries and if SKB is set to
4170  * non NULL it is unmapped and freed
4171  */
4172 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
4173 {
4174         int i;
4175         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4176                 if (rxq->pool[i].skb != NULL) {
4177                         pci_unmap_single(priv->pci_dev,
4178                                          rxq->pool[i].dma_addr,
4179                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4180                         dev_kfree_skb(rxq->pool[i].skb);
4181                 }
4182         }
4183
4184         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4185                             rxq->dma_addr);
4186         rxq->bd = NULL;
4187 }
4188
4189 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
4190 {
4191         struct iwl3945_rx_queue *rxq = &priv->rxq;
4192         struct pci_dev *dev = priv->pci_dev;
4193         int i;
4194
4195         spin_lock_init(&rxq->lock);
4196         INIT_LIST_HEAD(&rxq->rx_free);
4197         INIT_LIST_HEAD(&rxq->rx_used);
4198
4199         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4200         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4201         if (!rxq->bd)
4202                 return -ENOMEM;
4203
4204         /* Fill the rx_used queue with _all_ of the Rx buffers */
4205         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4206                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4207
4208         /* Set us so that we have processed and used all buffers, but have
4209          * not restocked the Rx queue with fresh buffers */
4210         rxq->read = rxq->write = 0;
4211         rxq->free_count = 0;
4212         rxq->need_update = 0;
4213         return 0;
4214 }
4215
4216 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
4217 {
4218         unsigned long flags;
4219         int i;
4220         spin_lock_irqsave(&rxq->lock, flags);
4221         INIT_LIST_HEAD(&rxq->rx_free);
4222         INIT_LIST_HEAD(&rxq->rx_used);
4223         /* Fill the rx_used queue with _all_ of the Rx buffers */
4224         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4225                 /* In the reset function, these buffers may have been allocated
4226                  * to an SKB, so we need to unmap and free potential storage */
4227                 if (rxq->pool[i].skb != NULL) {
4228                         pci_unmap_single(priv->pci_dev,
4229                                          rxq->pool[i].dma_addr,
4230                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4231                         priv->alloc_rxb_skb--;
4232                         dev_kfree_skb(rxq->pool[i].skb);
4233                         rxq->pool[i].skb = NULL;
4234                 }
4235                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4236         }
4237
4238         /* Set us so that we have processed and used all buffers, but have
4239          * not restocked the Rx queue with fresh buffers */
4240         rxq->read = rxq->write = 0;
4241         rxq->free_count = 0;
4242         spin_unlock_irqrestore(&rxq->lock, flags);
4243 }
4244
4245 /* Convert linear signal-to-noise ratio into dB */
4246 static u8 ratio2dB[100] = {
4247 /*       0   1   2   3   4   5   6   7   8   9 */
4248          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4249         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4250         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4251         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4252         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4253         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4254         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4255         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4256         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4257         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4258 };
4259
4260 /* Calculates a relative dB value from a ratio of linear
4261  *   (i.e. not dB) signal levels.
4262  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4263 int iwl3945_calc_db_from_ratio(int sig_ratio)
4264 {
4265         /* Anything above 1000:1 just report as 60 dB */
4266         if (sig_ratio > 1000)
4267                 return 60;
4268
4269         /* Above 100:1, divide by 10 and use table,
4270          *   add 20 dB to make up for divide by 10 */
4271         if (sig_ratio > 100)
4272                 return (20 + (int)ratio2dB[sig_ratio/10]);
4273
4274         /* We shouldn't see this */
4275         if (sig_ratio < 1)
4276                 return 0;
4277
4278         /* Use table for ratios 1:1 - 99:1 */
4279         return (int)ratio2dB[sig_ratio];
4280 }
4281
4282 #define PERFECT_RSSI (-20) /* dBm */
4283 #define WORST_RSSI (-95)   /* dBm */
4284 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4285
4286 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4287  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4288  *   about formulas used below. */
4289 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
4290 {
4291         int sig_qual;
4292         int degradation = PERFECT_RSSI - rssi_dbm;
4293
4294         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4295          * as indicator; formula is (signal dbm - noise dbm).
4296          * SNR at or above 40 is a great signal (100%).
4297          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4298          * Weakest usable signal is usually 10 - 15 dB SNR. */
4299         if (noise_dbm) {
4300                 if (rssi_dbm - noise_dbm >= 40)
4301                         return 100;
4302                 else if (rssi_dbm < noise_dbm)
4303                         return 0;
4304                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4305
4306         /* Else use just the signal level.
4307          * This formula is a least squares fit of data points collected and
4308          *   compared with a reference system that had a percentage (%) display
4309          *   for signal quality. */
4310         } else
4311                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4312                             (15 * RSSI_RANGE + 62 * degradation)) /
4313                            (RSSI_RANGE * RSSI_RANGE);
4314
4315         if (sig_qual > 100)
4316                 sig_qual = 100;
4317         else if (sig_qual < 1)
4318                 sig_qual = 0;
4319
4320         return sig_qual;
4321 }
4322
4323 /**
4324  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
4325  *
4326  * Uses the priv->rx_handlers callback function array to invoke
4327  * the appropriate handlers, including command responses,
4328  * frame-received notifications, and other notifications.
4329  */
4330 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
4331 {
4332         struct iwl3945_rx_mem_buffer *rxb;
4333         struct iwl3945_rx_packet *pkt;
4334         struct iwl3945_rx_queue *rxq = &priv->rxq;
4335         u32 r, i;
4336         int reclaim;
4337         unsigned long flags;
4338
4339         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4340          * buffer that the driver may process (last buffer filled by ucode). */
4341         r = iwl3945_hw_get_rx_read(priv);
4342         i = rxq->read;
4343
4344         /* Rx interrupt, but nothing sent from uCode */
4345         if (i == r)
4346                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4347
4348         while (i != r) {
4349                 rxb = rxq->queue[i];
4350
4351                 /* If an RXB doesn't have a Rx queue slot associated with it,
4352                  * then a bug has been introduced in the queue refilling
4353                  * routines -- catch it here */
4354                 BUG_ON(rxb == NULL);
4355
4356                 rxq->queue[i] = NULL;
4357
4358                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4359                                             IWL_RX_BUF_SIZE,
4360                                             PCI_DMA_FROMDEVICE);
4361                 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
4362
4363                 /* Reclaim a command buffer only if this packet is a response
4364                  *   to a (driver-originated) command.
4365                  * If the packet (e.g. Rx frame) originated from uCode,
4366                  *   there is no command buffer to reclaim.
4367                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4368                  *   but apparently a few don't get set; catch them here. */
4369                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4370                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4371                         (pkt->hdr.cmd != REPLY_TX);
4372
4373                 /* Based on type of command response or notification,
4374                  *   handle those that need handling via function in
4375                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
4376                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4377                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4378                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4379                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4380                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4381                 } else {
4382                         /* No handling needed */
4383                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4384                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4385                                 r, i, get_cmd_string(pkt->hdr.cmd),
4386                                 pkt->hdr.cmd);
4387                 }
4388
4389                 if (reclaim) {
4390                         /* Invoke any callbacks, transfer the skb to caller, and
4391                          * fire off the (possibly) blocking iwl3945_send_cmd()
4392                          * as we reclaim the driver command queue */
4393                         if (rxb && rxb->skb)
4394                                 iwl3945_tx_cmd_complete(priv, rxb);
4395                         else
4396                                 IWL_WARNING("Claim null rxb?\n");
4397                 }
4398
4399                 /* For now we just don't re-use anything.  We can tweak this
4400                  * later to try and re-use notification packets and SKBs that
4401                  * fail to Rx correctly */
4402                 if (rxb->skb != NULL) {
4403                         priv->alloc_rxb_skb--;
4404                         dev_kfree_skb_any(rxb->skb);
4405                         rxb->skb = NULL;
4406                 }
4407
4408                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4409                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4410                 spin_lock_irqsave(&rxq->lock, flags);
4411                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4412                 spin_unlock_irqrestore(&rxq->lock, flags);
4413                 i = (i + 1) & RX_QUEUE_MASK;
4414         }
4415
4416         /* Backtrack one entry */
4417         priv->rxq.read = i;
4418         iwl3945_rx_queue_restock(priv);
4419 }
4420
4421 /**
4422  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
4423  */
4424 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
4425                                   struct iwl3945_tx_queue *txq)
4426 {
4427         u32 reg = 0;
4428         int rc = 0;
4429         int txq_id = txq->q.id;
4430
4431         if (txq->need_update == 0)
4432                 return rc;
4433
4434         /* if we're trying to save power */
4435         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4436                 /* wake up nic if it's powered down ...
4437                  * uCode will wake up, and interrupt us again, so next
4438                  * time we'll skip this part. */
4439                 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4440
4441                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4442                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4443                         iwl3945_set_bit(priv, CSR_GP_CNTRL,
4444                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4445                         return rc;
4446                 }
4447
4448                 /* restore this queue's parameters in nic hardware. */
4449                 rc = iwl3945_grab_nic_access(priv);
4450                 if (rc)
4451                         return rc;
4452                 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4453                                      txq->q.write_ptr | (txq_id << 8));
4454                 iwl3945_release_nic_access(priv);
4455
4456         /* else not in power-save mode, uCode will never sleep when we're
4457          * trying to tx (during RFKILL, we're not trying to tx). */
4458         } else
4459                 iwl3945_write32(priv, HBUS_TARG_WRPTR,
4460                             txq->q.write_ptr | (txq_id << 8));
4461
4462         txq->need_update = 0;
4463
4464         return rc;
4465 }
4466
4467 #ifdef CONFIG_IWL3945_DEBUG
4468 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
4469 {
4470         DECLARE_MAC_BUF(mac);
4471
4472         IWL_DEBUG_RADIO("RX CONFIG:\n");
4473         iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4474         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4475         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4476         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4477                         le32_to_cpu(rxon->filter_flags));
4478         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4479         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4480                         rxon->ofdm_basic_rates);
4481         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4482         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4483                         print_mac(mac, rxon->node_addr));
4484         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4485                         print_mac(mac, rxon->bssid_addr));
4486         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4487 }
4488 #endif
4489
4490 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
4491 {
4492         IWL_DEBUG_ISR("Enabling interrupts\n");
4493         set_bit(STATUS_INT_ENABLED, &priv->status);
4494         iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4495 }
4496
4497 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
4498 {
4499         clear_bit(STATUS_INT_ENABLED, &priv->status);
4500
4501         /* disable interrupts from uCode/NIC to host */
4502         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4503
4504         /* acknowledge/clear/reset any interrupts still pending
4505          * from uCode or flow handler (Rx/Tx DMA) */
4506         iwl3945_write32(priv, CSR_INT, 0xffffffff);
4507         iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4508         IWL_DEBUG_ISR("Disabled interrupts\n");
4509 }
4510
4511 static const char *desc_lookup(int i)
4512 {
4513         switch (i) {
4514         case 1:
4515                 return "FAIL";
4516         case 2:
4517                 return "BAD_PARAM";
4518         case 3:
4519                 return "BAD_CHECKSUM";
4520         case 4:
4521                 return "NMI_INTERRUPT";
4522         case 5:
4523                 return "SYSASSERT";
4524         case 6:
4525                 return "FATAL_ERROR";
4526         }
4527
4528         return "UNKNOWN";
4529 }
4530
4531 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4532 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4533
4534 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4535 {
4536         u32 i;
4537         u32 desc, time, count, base, data1;
4538         u32 blink1, blink2, ilink1, ilink2;
4539         int rc;
4540
4541         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4542
4543         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4544                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4545                 return;
4546         }
4547
4548         rc = iwl3945_grab_nic_access(priv);
4549         if (rc) {
4550                 IWL_WARNING("Can not read from adapter at this time.\n");
4551                 return;
4552         }
4553
4554         count = iwl3945_read_targ_mem(priv, base);
4555
4556         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4557                 IWL_ERROR("Start IWL Error Log Dump:\n");
4558                 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4559                           priv->status, priv->config, count);
4560         }
4561
4562         IWL_ERROR("Desc       Time       asrtPC  blink2 "
4563                   "ilink1  nmiPC   Line\n");
4564         for (i = ERROR_START_OFFSET;
4565              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4566              i += ERROR_ELEM_SIZE) {
4567                 desc = iwl3945_read_targ_mem(priv, base + i);
4568                 time =
4569                     iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4570                 blink1 =
4571                     iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4572                 blink2 =
4573                     iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4574                 ilink1 =
4575                     iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4576                 ilink2 =
4577                     iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4578                 data1 =
4579                     iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4580
4581                 IWL_ERROR
4582                     ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4583                      desc_lookup(desc), desc, time, blink1, blink2,
4584                      ilink1, ilink2, data1);
4585         }
4586
4587         iwl3945_release_nic_access(priv);
4588
4589 }
4590
4591 #define EVENT_START_OFFSET  (6 * sizeof(u32))
4592
4593 /**
4594  * iwl3945_print_event_log - Dump error event log to syslog
4595  *
4596  * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4597  */
4598 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4599                                 u32 num_events, u32 mode)
4600 {
4601         u32 i;
4602         u32 base;       /* SRAM byte address of event log header */
4603         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4604         u32 ptr;        /* SRAM byte address of log data */
4605         u32 ev, time, data; /* event log data */
4606
4607         if (num_events == 0)
4608                 return;
4609
4610         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4611
4612         if (mode == 0)
4613                 event_size = 2 * sizeof(u32);
4614         else
4615                 event_size = 3 * sizeof(u32);
4616
4617         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4618
4619         /* "time" is actually "data" for mode 0 (no timestamp).
4620          * place event id # at far right for easier visual parsing. */
4621         for (i = 0; i < num_events; i++) {
4622                 ev = iwl3945_read_targ_mem(priv, ptr);
4623                 ptr += sizeof(u32);
4624                 time = iwl3945_read_targ_mem(priv, ptr);
4625                 ptr += sizeof(u32);
4626                 if (mode == 0)
4627                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4628                 else {
4629                         data = iwl3945_read_targ_mem(priv, ptr);
4630                         ptr += sizeof(u32);
4631                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4632                 }
4633         }
4634 }
4635
4636 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4637 {
4638         int rc;
4639         u32 base;       /* SRAM byte address of event log header */
4640         u32 capacity;   /* event log capacity in # entries */
4641         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4642         u32 num_wraps;  /* # times uCode wrapped to top of log */
4643         u32 next_entry; /* index of next entry to be written by uCode */
4644         u32 size;       /* # entries that we'll print */
4645
4646         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4647         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4648                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4649                 return;
4650         }
4651
4652         rc = iwl3945_grab_nic_access(priv);
4653         if (rc) {
4654                 IWL_WARNING("Can not read from adapter at this time.\n");
4655                 return;
4656         }
4657
4658         /* event log header */
4659         capacity = iwl3945_read_targ_mem(priv, base);
4660         mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4661         num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4662         next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4663
4664         size = num_wraps ? capacity : next_entry;
4665
4666         /* bail out if nothing in log */
4667         if (size == 0) {
4668                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4669                 iwl3945_release_nic_access(priv);
4670                 return;
4671         }
4672
4673         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4674                   size, num_wraps);
4675
4676         /* if uCode has wrapped back to top of log, start at the oldest entry,
4677          * i.e the next one that uCode would fill. */
4678         if (num_wraps)
4679                 iwl3945_print_event_log(priv, next_entry,
4680                                     capacity - next_entry, mode);
4681
4682         /* (then/else) start at top of log */
4683         iwl3945_print_event_log(priv, 0, next_entry, mode);
4684
4685         iwl3945_release_nic_access(priv);
4686 }
4687
4688 /**
4689  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4690  */
4691 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4692 {
4693         /* Set the FW error flag -- cleared on iwl3945_down */
4694         set_bit(STATUS_FW_ERROR, &priv->status);
4695
4696         /* Cancel currently queued command. */
4697         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4698
4699 #ifdef CONFIG_IWL3945_DEBUG
4700         if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4701                 iwl3945_dump_nic_error_log(priv);
4702                 iwl3945_dump_nic_event_log(priv);
4703                 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
4704         }
4705 #endif
4706
4707         wake_up_interruptible(&priv->wait_command_queue);
4708
4709         /* Keep the restart process from trying to send host
4710          * commands by clearing the INIT status bit */
4711         clear_bit(STATUS_READY, &priv->status);
4712
4713         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4714                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4715                           "Restarting adapter due to uCode error.\n");
4716
4717                 if (iwl3945_is_associated(priv)) {
4718                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4719                                sizeof(priv->recovery_rxon));
4720                         priv->error_recovering = 1;
4721                 }
4722                 queue_work(priv->workqueue, &priv->restart);
4723         }
4724 }
4725
4726 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4727 {
4728         unsigned long flags;
4729
4730         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4731                sizeof(priv->staging_rxon));
4732         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4733         iwl3945_commit_rxon(priv);
4734
4735         iwl3945_add_station(priv, priv->bssid, 1, 0);
4736
4737         spin_lock_irqsave(&priv->lock, flags);
4738         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4739         priv->error_recovering = 0;
4740         spin_unlock_irqrestore(&priv->lock, flags);
4741 }
4742
4743 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4744 {
4745         u32 inta, handled = 0;
4746         u32 inta_fh;
4747         unsigned long flags;
4748 #ifdef CONFIG_IWL3945_DEBUG
4749         u32 inta_mask;
4750 #endif
4751
4752         spin_lock_irqsave(&priv->lock, flags);
4753
4754         /* Ack/clear/reset pending uCode interrupts.
4755          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4756          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4757         inta = iwl3945_read32(priv, CSR_INT);
4758         iwl3945_write32(priv, CSR_INT, inta);
4759
4760         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4761          * Any new interrupts that happen after this, either while we're
4762          * in this tasklet, or later, will show up in next ISR/tasklet. */
4763         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4764         iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4765
4766 #ifdef CONFIG_IWL3945_DEBUG
4767         if (iwl3945_debug_level & IWL_DL_ISR) {
4768                 /* just for debug */
4769                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4770                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4771                               inta, inta_mask, inta_fh);
4772         }
4773 #endif
4774
4775         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4776          * atomic, make sure that inta covers all the interrupts that
4777          * we've discovered, even if FH interrupt came in just after
4778          * reading CSR_INT. */
4779         if (inta_fh & CSR_FH_INT_RX_MASK)
4780                 inta |= CSR_INT_BIT_FH_RX;
4781         if (inta_fh & CSR_FH_INT_TX_MASK)
4782                 inta |= CSR_INT_BIT_FH_TX;
4783
4784         /* Now service all interrupt bits discovered above. */
4785         if (inta & CSR_INT_BIT_HW_ERR) {
4786                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4787
4788                 /* Tell the device to stop sending interrupts */
4789                 iwl3945_disable_interrupts(priv);
4790
4791                 iwl3945_irq_handle_error(priv);
4792
4793                 handled |= CSR_INT_BIT_HW_ERR;
4794
4795                 spin_unlock_irqrestore(&priv->lock, flags);
4796
4797                 return;
4798         }
4799
4800 #ifdef CONFIG_IWL3945_DEBUG
4801         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4802                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4803                 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
4804                         IWL_DEBUG_ISR("Microcode started or stopped.\n");
4805
4806                 /* Alive notification via Rx interrupt will do the real work */
4807                 if (inta & CSR_INT_BIT_ALIVE)
4808                         IWL_DEBUG_ISR("Alive interrupt\n");
4809         }
4810 #endif
4811         /* Safely ignore these bits for debug checks below */
4812         inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
4813
4814         /* HW RF KILL switch toggled (4965 only) */
4815         if (inta & CSR_INT_BIT_RF_KILL) {
4816                 int hw_rf_kill = 0;
4817                 if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
4818                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4819                         hw_rf_kill = 1;
4820
4821                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4822                                 "RF_KILL bit toggled to %s.\n",
4823                                 hw_rf_kill ? "disable radio":"enable radio");
4824
4825                 /* Queue restart only if RF_KILL switch was set to "kill"
4826                  *   when we loaded driver, and is now set to "enable".
4827                  * After we're Alive, RF_KILL gets handled by
4828                  *   iwl_rx_card_state_notif() */
4829                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4830                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4831                         queue_work(priv->workqueue, &priv->restart);
4832                 }
4833
4834                 handled |= CSR_INT_BIT_RF_KILL;
4835         }
4836
4837         /* Chip got too hot and stopped itself (4965 only) */
4838         if (inta & CSR_INT_BIT_CT_KILL) {
4839                 IWL_ERROR("Microcode CT kill error detected.\n");
4840                 handled |= CSR_INT_BIT_CT_KILL;
4841         }
4842
4843         /* Error detected by uCode */
4844         if (inta & CSR_INT_BIT_SW_ERR) {
4845                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4846                           inta);
4847                 iwl3945_irq_handle_error(priv);
4848                 handled |= CSR_INT_BIT_SW_ERR;
4849         }
4850
4851         /* uCode wakes up after power-down sleep */
4852         if (inta & CSR_INT_BIT_WAKEUP) {
4853                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4854                 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4855                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4856                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4857                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4858                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4859                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4860                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4861
4862                 handled |= CSR_INT_BIT_WAKEUP;
4863         }
4864
4865         /* All uCode command responses, including Tx command responses,
4866          * Rx "responses" (frame-received notification), and other
4867          * notifications from uCode come through here*/
4868         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4869                 iwl3945_rx_handle(priv);
4870                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4871         }
4872
4873         if (inta & CSR_INT_BIT_FH_TX) {
4874                 IWL_DEBUG_ISR("Tx interrupt\n");
4875
4876                 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4877                 if (!iwl3945_grab_nic_access(priv)) {
4878                         iwl3945_write_direct32(priv,
4879                                              FH_TCSR_CREDIT
4880                                              (ALM_FH_SRVC_CHNL), 0x0);
4881                         iwl3945_release_nic_access(priv);
4882                 }
4883                 handled |= CSR_INT_BIT_FH_TX;
4884         }
4885
4886         if (inta & ~handled)
4887                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4888
4889         if (inta & ~CSR_INI_SET_MASK) {
4890                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4891                          inta & ~CSR_INI_SET_MASK);
4892                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4893         }
4894
4895         /* Re-enable all interrupts */
4896         iwl3945_enable_interrupts(priv);
4897
4898 #ifdef CONFIG_IWL3945_DEBUG
4899         if (iwl3945_debug_level & (IWL_DL_ISR)) {
4900                 inta = iwl3945_read32(priv, CSR_INT);
4901                 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4902                 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4903                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4904                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4905         }
4906 #endif
4907         spin_unlock_irqrestore(&priv->lock, flags);
4908 }
4909
4910 static irqreturn_t iwl3945_isr(int irq, void *data)
4911 {
4912         struct iwl3945_priv *priv = data;
4913         u32 inta, inta_mask;
4914         u32 inta_fh;
4915         if (!priv)
4916                 return IRQ_NONE;
4917
4918         spin_lock(&priv->lock);
4919
4920         /* Disable (but don't clear!) interrupts here to avoid
4921          *    back-to-back ISRs and sporadic interrupts from our NIC.
4922          * If we have something to service, the tasklet will re-enable ints.
4923          * If we *don't* have something, we'll re-enable before leaving here. */
4924         inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
4925         iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4926
4927         /* Discover which interrupts are active/pending */
4928         inta = iwl3945_read32(priv, CSR_INT);
4929         inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4930
4931         /* Ignore interrupt if there's nothing in NIC to service.
4932          * This may be due to IRQ shared with another device,
4933          * or due to sporadic interrupts thrown from our NIC. */
4934         if (!inta && !inta_fh) {
4935                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4936                 goto none;
4937         }
4938
4939         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4940                 /* Hardware disappeared */
4941                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4942                 goto unplugged;
4943         }
4944
4945         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4946                       inta, inta_mask, inta_fh);
4947
4948         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4949         tasklet_schedule(&priv->irq_tasklet);
4950 unplugged:
4951         spin_unlock(&priv->lock);
4952
4953         return IRQ_HANDLED;
4954
4955  none:
4956         /* re-enable interrupts here since we don't have anything to service. */
4957         iwl3945_enable_interrupts(priv);
4958         spin_unlock(&priv->lock);
4959         return IRQ_NONE;
4960 }
4961
4962 /************************** EEPROM BANDS ****************************
4963  *
4964  * The iwl3945_eeprom_band definitions below provide the mapping from the
4965  * EEPROM contents to the specific channel number supported for each
4966  * band.
4967  *
4968  * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
4969  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4970  * The specific geography and calibration information for that channel
4971  * is contained in the eeprom map itself.
4972  *
4973  * During init, we copy the eeprom information and channel map
4974  * information into priv->channel_info_24/52 and priv->channel_map_24/52
4975  *
4976  * channel_map_24/52 provides the index in the channel_info array for a
4977  * given channel.  We have to have two separate maps as there is channel
4978  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4979  * band_2
4980  *
4981  * A value of 0xff stored in the channel_map indicates that the channel
4982  * is not supported by the hardware at all.
4983  *
4984  * A value of 0xfe in the channel_map indicates that the channel is not
4985  * valid for Tx with the current hardware.  This means that
4986  * while the system can tune and receive on a given channel, it may not
4987  * be able to associate or transmit any frames on that
4988  * channel.  There is no corresponding channel information for that
4989  * entry.
4990  *
4991  *********************************************************************/
4992
4993 /* 2.4 GHz */
4994 static const u8 iwl3945_eeprom_band_1[14] = {
4995         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4996 };
4997
4998 /* 5.2 GHz bands */
4999 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
5000         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5001 };
5002
5003 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
5004         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5005 };
5006
5007 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
5008         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5009 };
5010
5011 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
5012         145, 149, 153, 157, 161, 165
5013 };
5014
5015 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
5016                                     int *eeprom_ch_count,
5017                                     const struct iwl3945_eeprom_channel
5018                                     **eeprom_ch_info,
5019                                     const u8 **eeprom_ch_index)
5020 {
5021         switch (band) {
5022         case 1:         /* 2.4GHz band */
5023                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
5024                 *eeprom_ch_info = priv->eeprom.band_1_channels;
5025                 *eeprom_ch_index = iwl3945_eeprom_band_1;
5026                 break;
5027         case 2:         /* 4.9GHz band */
5028                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
5029                 *eeprom_ch_info = priv->eeprom.band_2_channels;
5030                 *eeprom_ch_index = iwl3945_eeprom_band_2;
5031                 break;
5032         case 3:         /* 5.2GHz band */
5033                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
5034                 *eeprom_ch_info = priv->eeprom.band_3_channels;
5035                 *eeprom_ch_index = iwl3945_eeprom_band_3;
5036                 break;
5037         case 4:         /* 5.5GHz band */
5038                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
5039                 *eeprom_ch_info = priv->eeprom.band_4_channels;
5040                 *eeprom_ch_index = iwl3945_eeprom_band_4;
5041                 break;
5042         case 5:         /* 5.7GHz band */
5043                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
5044                 *eeprom_ch_info = priv->eeprom.band_5_channels;
5045                 *eeprom_ch_index = iwl3945_eeprom_band_5;
5046                 break;
5047         default:
5048                 BUG();
5049                 return;
5050         }
5051 }
5052
5053 /**
5054  * iwl3945_get_channel_info - Find driver's private channel info
5055  *
5056  * Based on band and channel number.
5057  */
5058 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
5059                                                     int phymode, u16 channel)
5060 {
5061         int i;
5062
5063         switch (phymode) {
5064         case MODE_IEEE80211A:
5065                 for (i = 14; i < priv->channel_count; i++) {
5066                         if (priv->channel_info[i].channel == channel)
5067                                 return &priv->channel_info[i];
5068                 }
5069                 break;
5070
5071         case MODE_IEEE80211B:
5072         case MODE_IEEE80211G:
5073                 if (channel >= 1 && channel <= 14)
5074                         return &priv->channel_info[channel - 1];
5075                 break;
5076
5077         }
5078
5079         return NULL;
5080 }
5081
5082 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5083                             ? # x " " : "")
5084
5085 /**
5086  * iwl3945_init_channel_map - Set up driver's info for all possible channels
5087  */
5088 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
5089 {
5090         int eeprom_ch_count = 0;
5091         const u8 *eeprom_ch_index = NULL;
5092         const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
5093         int band, ch;
5094         struct iwl3945_channel_info *ch_info;
5095
5096         if (priv->channel_count) {
5097                 IWL_DEBUG_INFO("Channel map already initialized.\n");
5098                 return 0;
5099         }
5100
5101         if (priv->eeprom.version < 0x2f) {
5102                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5103                             priv->eeprom.version);
5104                 return -EINVAL;
5105         }
5106
5107         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5108
5109         priv->channel_count =
5110             ARRAY_SIZE(iwl3945_eeprom_band_1) +
5111             ARRAY_SIZE(iwl3945_eeprom_band_2) +
5112             ARRAY_SIZE(iwl3945_eeprom_band_3) +
5113             ARRAY_SIZE(iwl3945_eeprom_band_4) +
5114             ARRAY_SIZE(iwl3945_eeprom_band_5);
5115
5116         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5117
5118         priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
5119                                      priv->channel_count, GFP_KERNEL);
5120         if (!priv->channel_info) {
5121                 IWL_ERROR("Could not allocate channel_info\n");
5122                 priv->channel_count = 0;
5123                 return -ENOMEM;
5124         }
5125
5126         ch_info = priv->channel_info;
5127
5128         /* Loop through the 5 EEPROM bands adding them in order to the
5129          * channel map we maintain (that contains additional information than
5130          * what just in the EEPROM) */
5131         for (band = 1; band <= 5; band++) {
5132
5133                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
5134                                         &eeprom_ch_info, &eeprom_ch_index);
5135
5136                 /* Loop through each band adding each of the channels */
5137                 for (ch = 0; ch < eeprom_ch_count; ch++) {
5138                         ch_info->channel = eeprom_ch_index[ch];
5139                         ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5140                             MODE_IEEE80211A;
5141
5142                         /* permanently store EEPROM's channel regulatory flags
5143                          *   and max power in channel info database. */
5144                         ch_info->eeprom = eeprom_ch_info[ch];
5145
5146                         /* Copy the run-time flags so they are there even on
5147                          * invalid channels */
5148                         ch_info->flags = eeprom_ch_info[ch].flags;
5149
5150                         if (!(is_channel_valid(ch_info))) {
5151                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5152                                                "No traffic\n",
5153                                                ch_info->channel,
5154                                                ch_info->flags,
5155                                                is_channel_a_band(ch_info) ?
5156                                                "5.2" : "2.4");
5157                                 ch_info++;
5158                                 continue;
5159                         }
5160
5161                         /* Initialize regulatory-based run-time data */
5162                         ch_info->max_power_avg = ch_info->curr_txpow =
5163                             eeprom_ch_info[ch].max_power_avg;
5164                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5165                         ch_info->min_power = 0;
5166
5167                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5168                                        " %ddBm): Ad-Hoc %ssupported\n",
5169                                        ch_info->channel,
5170                                        is_channel_a_band(ch_info) ?
5171                                        "5.2" : "2.4",
5172                                        CHECK_AND_PRINT(IBSS),
5173                                        CHECK_AND_PRINT(ACTIVE),
5174                                        CHECK_AND_PRINT(RADAR),
5175                                        CHECK_AND_PRINT(WIDE),
5176                                        CHECK_AND_PRINT(NARROW),
5177                                        CHECK_AND_PRINT(DFS),
5178                                        eeprom_ch_info[ch].flags,
5179                                        eeprom_ch_info[ch].max_power_avg,
5180                                        ((eeprom_ch_info[ch].
5181                                          flags & EEPROM_CHANNEL_IBSS)
5182                                         && !(eeprom_ch_info[ch].
5183                                              flags & EEPROM_CHANNEL_RADAR))
5184                                        ? "" : "not ");
5185
5186                         /* Set the user_txpower_limit to the highest power
5187                          * supported by any channel */
5188                         if (eeprom_ch_info[ch].max_power_avg >
5189                             priv->user_txpower_limit)
5190                                 priv->user_txpower_limit =
5191                                     eeprom_ch_info[ch].max_power_avg;
5192
5193                         ch_info++;
5194                 }
5195         }
5196
5197         /* Set up txpower settings in driver for all channels */
5198         if (iwl3945_txpower_set_from_eeprom(priv))
5199                 return -EIO;
5200
5201         return 0;
5202 }
5203
5204 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5205  * sending probe req.  This should be set long enough to hear probe responses
5206  * from more than one AP.  */
5207 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
5208 #define IWL_ACTIVE_DWELL_TIME_52    (10)
5209
5210 /* For faster active scanning, scan will move to the next channel if fewer than
5211  * PLCP_QUIET_THRESH packets are heard on this channel within
5212  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
5213  * time if it's a quiet channel (nothing responded to our probe, and there's
5214  * no other traffic).
5215  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5216 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
5217 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
5218
5219 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5220  * Must be set longer than active dwell time.
5221  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5222 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
5223 #define IWL_PASSIVE_DWELL_TIME_52   (10)
5224 #define IWL_PASSIVE_DWELL_BASE      (100)
5225 #define IWL_CHANNEL_TUNE_TIME       5
5226
5227 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv, int phymode)
5228 {
5229         if (phymode == MODE_IEEE80211A)
5230                 return IWL_ACTIVE_DWELL_TIME_52;
5231         else
5232                 return IWL_ACTIVE_DWELL_TIME_24;
5233 }
5234
5235 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv, int phymode)
5236 {
5237         u16 active = iwl3945_get_active_dwell_time(priv, phymode);
5238         u16 passive = (phymode != MODE_IEEE80211A) ?
5239             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5240             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5241
5242         if (iwl3945_is_associated(priv)) {
5243                 /* If we're associated, we clamp the maximum passive
5244                  * dwell time to be 98% of the beacon interval (minus
5245                  * 2 * channel tune time) */
5246                 passive = priv->beacon_int;
5247                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5248                         passive = IWL_PASSIVE_DWELL_BASE;
5249                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5250         }
5251
5252         if (passive <= active)
5253                 passive = active + 1;
5254
5255         return passive;
5256 }
5257
5258 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv, int phymode,
5259                                      u8 is_active, u8 direct_mask,
5260                                      struct iwl3945_scan_channel *scan_ch)
5261 {
5262         const struct ieee80211_channel *channels = NULL;
5263         const struct ieee80211_hw_mode *hw_mode;
5264         const struct iwl3945_channel_info *ch_info;
5265         u16 passive_dwell = 0;
5266         u16 active_dwell = 0;
5267         int added, i;
5268
5269         hw_mode = iwl3945_get_hw_mode(priv, phymode);
5270         if (!hw_mode)
5271                 return 0;
5272
5273         channels = hw_mode->channels;
5274
5275         active_dwell = iwl3945_get_active_dwell_time(priv, phymode);
5276         passive_dwell = iwl3945_get_passive_dwell_time(priv, phymode);
5277
5278         for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5279                 if (channels[i].chan ==
5280                     le16_to_cpu(priv->active_rxon.channel)) {
5281                         if (iwl3945_is_associated(priv)) {
5282                                 IWL_DEBUG_SCAN
5283                                     ("Skipping current channel %d\n",
5284                                      le16_to_cpu(priv->active_rxon.channel));
5285                                 continue;
5286                         }
5287                 } else if (priv->only_active_channel)
5288                         continue;
5289
5290                 scan_ch->channel = channels[i].chan;
5291
5292                 ch_info = iwl3945_get_channel_info(priv, phymode, scan_ch->channel);
5293                 if (!is_channel_valid(ch_info)) {
5294                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5295                                        scan_ch->channel);
5296                         continue;
5297                 }
5298
5299                 if (!is_active || is_channel_passive(ch_info) ||
5300                     !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5301                         scan_ch->type = 0;      /* passive */
5302                 else
5303                         scan_ch->type = 1;      /* active */
5304
5305                 if (scan_ch->type & 1)
5306                         scan_ch->type |= (direct_mask << 1);
5307
5308                 if (is_channel_narrow(ch_info))
5309                         scan_ch->type |= (1 << 7);
5310
5311                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5312                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5313
5314                 /* Set txpower levels to defaults */
5315                 scan_ch->tpc.dsp_atten = 110;
5316                 /* scan_pwr_info->tpc.dsp_atten; */
5317
5318                 /*scan_pwr_info->tpc.tx_gain; */
5319                 if (phymode == MODE_IEEE80211A)
5320                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5321                 else {
5322                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5323                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5324                          * power level:
5325                          * scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5326                          */
5327                 }
5328
5329                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5330                                scan_ch->channel,
5331                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5332                                (scan_ch->type & 1) ?
5333                                active_dwell : passive_dwell);
5334
5335                 scan_ch++;
5336                 added++;
5337         }
5338
5339         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5340         return added;
5341 }
5342
5343 static void iwl3945_reset_channel_flag(struct iwl3945_priv *priv)
5344 {
5345         int i, j;
5346         for (i = 0; i < 3; i++) {
5347                 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5348                 for (j = 0; j < hw_mode->num_channels; j++)
5349                         hw_mode->channels[j].flag = hw_mode->channels[j].val;
5350         }
5351 }
5352
5353 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
5354                               struct ieee80211_rate *rates)
5355 {
5356         int i;
5357
5358         for (i = 0; i < IWL_RATE_COUNT; i++) {
5359                 rates[i].rate = iwl3945_rates[i].ieee * 5;
5360                 rates[i].val = i; /* Rate scaling will work on indexes */
5361                 rates[i].val2 = i;
5362                 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5363                 /* Only OFDM have the bits-per-symbol set */
5364                 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5365                         rates[i].flags |= IEEE80211_RATE_OFDM;
5366                 else {
5367                         /*
5368                          * If CCK 1M then set rate flag to CCK else CCK_2
5369                          * which is CCK | PREAMBLE2
5370                          */
5371                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5372                                 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5373                 }
5374
5375                 /* Set up which ones are basic rates... */
5376                 if (IWL_BASIC_RATES_MASK & (1 << i))
5377                         rates[i].flags |= IEEE80211_RATE_BASIC;
5378         }
5379 }
5380
5381 /**
5382  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
5383  */
5384 static int iwl3945_init_geos(struct iwl3945_priv *priv)
5385 {
5386         struct iwl3945_channel_info *ch;
5387         struct ieee80211_hw_mode *modes;
5388         struct ieee80211_channel *channels;
5389         struct ieee80211_channel *geo_ch;
5390         struct ieee80211_rate *rates;
5391         int i = 0;
5392         enum {
5393                 A = 0,
5394                 B = 1,
5395                 G = 2,
5396         };
5397         int mode_count = 3;
5398
5399         if (priv->modes) {
5400                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5401                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5402                 return 0;
5403         }
5404
5405         modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5406                         GFP_KERNEL);
5407         if (!modes)
5408                 return -ENOMEM;
5409
5410         channels = kzalloc(sizeof(struct ieee80211_channel) *
5411                            priv->channel_count, GFP_KERNEL);
5412         if (!channels) {
5413                 kfree(modes);
5414                 return -ENOMEM;
5415         }
5416
5417         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5418                         GFP_KERNEL);
5419         if (!rates) {
5420                 kfree(modes);
5421                 kfree(channels);
5422                 return -ENOMEM;
5423         }
5424
5425         /* 0 = 802.11a
5426          * 1 = 802.11b
5427          * 2 = 802.11g
5428          */
5429
5430         /* 5.2GHz channels start after the 2.4GHz channels */
5431         modes[A].mode = MODE_IEEE80211A;
5432         modes[A].channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
5433         modes[A].rates = &rates[4];
5434         modes[A].num_rates = 8; /* just OFDM */
5435         modes[A].num_channels = 0;
5436
5437         modes[B].mode = MODE_IEEE80211B;
5438         modes[B].channels = channels;
5439         modes[B].rates = rates;
5440         modes[B].num_rates = 4; /* just CCK */
5441         modes[B].num_channels = 0;
5442
5443         modes[G].mode = MODE_IEEE80211G;
5444         modes[G].channels = channels;
5445         modes[G].rates = rates;
5446         modes[G].num_rates = 12;        /* OFDM & CCK */
5447         modes[G].num_channels = 0;
5448
5449         priv->ieee_channels = channels;
5450         priv->ieee_rates = rates;
5451
5452         iwl3945_init_hw_rates(priv, rates);
5453
5454         for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5455                 ch = &priv->channel_info[i];
5456
5457                 if (!is_channel_valid(ch)) {
5458                         IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5459                                     "skipping.\n",
5460                                     ch->channel, is_channel_a_band(ch) ?
5461                                     "5.2" : "2.4");
5462                         continue;
5463                 }
5464
5465                 if (is_channel_a_band(ch))
5466                         geo_ch = &modes[A].channels[modes[A].num_channels++];
5467                 else {
5468                         geo_ch = &modes[B].channels[modes[B].num_channels++];
5469                         modes[G].num_channels++;
5470                 }
5471
5472                 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5473                 geo_ch->chan = ch->channel;
5474                 geo_ch->power_level = ch->max_power_avg;
5475                 geo_ch->antenna_max = 0xff;
5476
5477                 if (is_channel_valid(ch)) {
5478                         geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5479                         if (ch->flags & EEPROM_CHANNEL_IBSS)
5480                                 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5481
5482                         if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5483                                 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5484
5485                         if (ch->flags & EEPROM_CHANNEL_RADAR)
5486                                 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5487
5488                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
5489                                 priv->max_channel_txpower_limit =
5490                                     ch->max_power_avg;
5491                 }
5492
5493                 geo_ch->val = geo_ch->flag;
5494         }
5495
5496         if ((modes[A].num_channels == 0) && priv->is_abg) {
5497                 printk(KERN_INFO DRV_NAME
5498                        ": Incorrectly detected BG card as ABG.  Please send "
5499                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5500                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5501                 priv->is_abg = 0;
5502         }
5503
5504         printk(KERN_INFO DRV_NAME
5505                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5506                modes[G].num_channels, modes[A].num_channels);
5507
5508         /*
5509          * NOTE:  We register these in preference of order -- the
5510          * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5511          * a phymode based on rates or AP capabilities but seems to
5512          * configure it purely on if the channel being configured
5513          * is supported by a mode -- and the first match is taken
5514          */
5515
5516         if (modes[G].num_channels)
5517                 ieee80211_register_hwmode(priv->hw, &modes[G]);
5518         if (modes[B].num_channels)
5519                 ieee80211_register_hwmode(priv->hw, &modes[B]);
5520         if (modes[A].num_channels)
5521                 ieee80211_register_hwmode(priv->hw, &modes[A]);
5522
5523         priv->modes = modes;
5524         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5525
5526         return 0;
5527 }
5528
5529 /******************************************************************************
5530  *
5531  * uCode download functions
5532  *
5533  ******************************************************************************/
5534
5535 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
5536 {
5537         if (priv->ucode_code.v_addr != NULL) {
5538                 pci_free_consistent(priv->pci_dev,
5539                                     priv->ucode_code.len,
5540                                     priv->ucode_code.v_addr,
5541                                     priv->ucode_code.p_addr);
5542                 priv->ucode_code.v_addr = NULL;
5543         }
5544         if (priv->ucode_data.v_addr != NULL) {
5545                 pci_free_consistent(priv->pci_dev,
5546                                     priv->ucode_data.len,
5547                                     priv->ucode_data.v_addr,
5548                                     priv->ucode_data.p_addr);
5549                 priv->ucode_data.v_addr = NULL;
5550         }
5551         if (priv->ucode_data_backup.v_addr != NULL) {
5552                 pci_free_consistent(priv->pci_dev,
5553                                     priv->ucode_data_backup.len,
5554                                     priv->ucode_data_backup.v_addr,
5555                                     priv->ucode_data_backup.p_addr);
5556                 priv->ucode_data_backup.v_addr = NULL;
5557         }
5558         if (priv->ucode_init.v_addr != NULL) {
5559                 pci_free_consistent(priv->pci_dev,
5560                                     priv->ucode_init.len,
5561                                     priv->ucode_init.v_addr,
5562                                     priv->ucode_init.p_addr);
5563                 priv->ucode_init.v_addr = NULL;
5564         }
5565         if (priv->ucode_init_data.v_addr != NULL) {
5566                 pci_free_consistent(priv->pci_dev,
5567                                     priv->ucode_init_data.len,
5568                                     priv->ucode_init_data.v_addr,
5569                                     priv->ucode_init_data.p_addr);
5570                 priv->ucode_init_data.v_addr = NULL;
5571         }
5572         if (priv->ucode_boot.v_addr != NULL) {
5573                 pci_free_consistent(priv->pci_dev,
5574                                     priv->ucode_boot.len,
5575                                     priv->ucode_boot.v_addr,
5576                                     priv->ucode_boot.p_addr);
5577                 priv->ucode_boot.v_addr = NULL;
5578         }
5579 }
5580
5581 /**
5582  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5583  *     looking at all data.
5584  */
5585 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
5586 {
5587         u32 val;
5588         u32 save_len = len;
5589         int rc = 0;
5590         u32 errcnt;
5591
5592         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5593
5594         rc = iwl3945_grab_nic_access(priv);
5595         if (rc)
5596                 return rc;
5597
5598         iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5599
5600         errcnt = 0;
5601         for (; len > 0; len -= sizeof(u32), image++) {
5602                 /* read data comes through single port, auto-incr addr */
5603                 /* NOTE: Use the debugless read so we don't flood kernel log
5604                  * if IWL_DL_IO is set */
5605                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5606                 if (val != le32_to_cpu(*image)) {
5607                         IWL_ERROR("uCode INST section is invalid at "
5608                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5609                                   save_len - len, val, le32_to_cpu(*image));
5610                         rc = -EIO;
5611                         errcnt++;
5612                         if (errcnt >= 20)
5613                                 break;
5614                 }
5615         }
5616
5617         iwl3945_release_nic_access(priv);
5618
5619         if (!errcnt)
5620                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5621
5622         return rc;
5623 }
5624
5625
5626 /**
5627  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5628  *   using sample data 100 bytes apart.  If these sample points are good,
5629  *   it's a pretty good bet that everything between them is good, too.
5630  */
5631 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5632 {
5633         u32 val;
5634         int rc = 0;
5635         u32 errcnt = 0;
5636         u32 i;
5637
5638         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5639
5640         rc = iwl3945_grab_nic_access(priv);
5641         if (rc)
5642                 return rc;
5643
5644         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5645                 /* read data comes through single port, auto-incr addr */
5646                 /* NOTE: Use the debugless read so we don't flood kernel log
5647                  * if IWL_DL_IO is set */
5648                 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5649                         i + RTC_INST_LOWER_BOUND);
5650                 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5651                 if (val != le32_to_cpu(*image)) {
5652 #if 0 /* Enable this if you want to see details */
5653                         IWL_ERROR("uCode INST section is invalid at "
5654                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5655                                   i, val, *image);
5656 #endif
5657                         rc = -EIO;
5658                         errcnt++;
5659                         if (errcnt >= 3)
5660                                 break;
5661                 }
5662         }
5663
5664         iwl3945_release_nic_access(priv);
5665
5666         return rc;
5667 }
5668
5669
5670 /**
5671  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5672  *    and verify its contents
5673  */
5674 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5675 {
5676         __le32 *image;
5677         u32 len;
5678         int rc = 0;
5679
5680         /* Try bootstrap */
5681         image = (__le32 *)priv->ucode_boot.v_addr;
5682         len = priv->ucode_boot.len;
5683         rc = iwl3945_verify_inst_sparse(priv, image, len);
5684         if (rc == 0) {
5685                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5686                 return 0;
5687         }
5688
5689         /* Try initialize */
5690         image = (__le32 *)priv->ucode_init.v_addr;
5691         len = priv->ucode_init.len;
5692         rc = iwl3945_verify_inst_sparse(priv, image, len);
5693         if (rc == 0) {
5694                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5695                 return 0;
5696         }
5697
5698         /* Try runtime/protocol */
5699         image = (__le32 *)priv->ucode_code.v_addr;
5700         len = priv->ucode_code.len;
5701         rc = iwl3945_verify_inst_sparse(priv, image, len);
5702         if (rc == 0) {
5703                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5704                 return 0;
5705         }
5706
5707         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5708
5709         /* Since nothing seems to match, show first several data entries in
5710          * instruction SRAM, so maybe visual inspection will give a clue.
5711          * Selection of bootstrap image (vs. other images) is arbitrary. */
5712         image = (__le32 *)priv->ucode_boot.v_addr;
5713         len = priv->ucode_boot.len;
5714         rc = iwl3945_verify_inst_full(priv, image, len);
5715
5716         return rc;
5717 }
5718
5719
5720 /* check contents of special bootstrap uCode SRAM */
5721 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5722 {
5723         __le32 *image = priv->ucode_boot.v_addr;
5724         u32 len = priv->ucode_boot.len;
5725         u32 reg;
5726         u32 val;
5727
5728         IWL_DEBUG_INFO("Begin verify bsm\n");
5729
5730         /* verify BSM SRAM contents */
5731         val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5732         for (reg = BSM_SRAM_LOWER_BOUND;
5733              reg < BSM_SRAM_LOWER_BOUND + len;
5734              reg += sizeof(u32), image ++) {
5735                 val = iwl3945_read_prph(priv, reg);
5736                 if (val != le32_to_cpu(*image)) {
5737                         IWL_ERROR("BSM uCode verification failed at "
5738                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5739                                   BSM_SRAM_LOWER_BOUND,
5740                                   reg - BSM_SRAM_LOWER_BOUND, len,
5741                                   val, le32_to_cpu(*image));
5742                         return -EIO;
5743                 }
5744         }
5745
5746         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5747
5748         return 0;
5749 }
5750
5751 /**
5752  * iwl3945_load_bsm - Load bootstrap instructions
5753  *
5754  * BSM operation:
5755  *
5756  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5757  * in special SRAM that does not power down during RFKILL.  When powering back
5758  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5759  * the bootstrap program into the on-board processor, and starts it.
5760  *
5761  * The bootstrap program loads (via DMA) instructions and data for a new
5762  * program from host DRAM locations indicated by the host driver in the
5763  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5764  * automatically.
5765  *
5766  * When initializing the NIC, the host driver points the BSM to the
5767  * "initialize" uCode image.  This uCode sets up some internal data, then
5768  * notifies host via "initialize alive" that it is complete.
5769  *
5770  * The host then replaces the BSM_DRAM_* pointer values to point to the
5771  * normal runtime uCode instructions and a backup uCode data cache buffer
5772  * (filled initially with starting data values for the on-board processor),
5773  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5774  * which begins normal operation.
5775  *
5776  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5777  * the backup data cache in DRAM before SRAM is powered down.
5778  *
5779  * When powering back up, the BSM loads the bootstrap program.  This reloads
5780  * the runtime uCode instructions and the backup data cache into SRAM,
5781  * and re-launches the runtime uCode from where it left off.
5782  */
5783 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5784 {
5785         __le32 *image = priv->ucode_boot.v_addr;
5786         u32 len = priv->ucode_boot.len;
5787         dma_addr_t pinst;
5788         dma_addr_t pdata;
5789         u32 inst_len;
5790         u32 data_len;
5791         int rc;
5792         int i;
5793         u32 done;
5794         u32 reg_offset;
5795
5796         IWL_DEBUG_INFO("Begin load bsm\n");
5797
5798         /* make sure bootstrap program is no larger than BSM's SRAM size */
5799         if (len > IWL_MAX_BSM_SIZE)
5800                 return -EINVAL;
5801
5802         /* Tell bootstrap uCode where to find the "Initialize" uCode
5803          *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5804          * NOTE:  iwl3945_initialize_alive_start() will replace these values,
5805          *        after the "initialize" uCode has run, to point to
5806          *        runtime/protocol instructions and backup data cache. */
5807         pinst = priv->ucode_init.p_addr;
5808         pdata = priv->ucode_init_data.p_addr;
5809         inst_len = priv->ucode_init.len;
5810         data_len = priv->ucode_init_data.len;
5811
5812         rc = iwl3945_grab_nic_access(priv);
5813         if (rc)
5814                 return rc;
5815
5816         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5817         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5818         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5819         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5820
5821         /* Fill BSM memory with bootstrap instructions */
5822         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5823              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5824              reg_offset += sizeof(u32), image++)
5825                 _iwl3945_write_prph(priv, reg_offset,
5826                                           le32_to_cpu(*image));
5827
5828         rc = iwl3945_verify_bsm(priv);
5829         if (rc) {
5830                 iwl3945_release_nic_access(priv);
5831                 return rc;
5832         }
5833
5834         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5835         iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5836         iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5837                                  RTC_INST_LOWER_BOUND);
5838         iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5839
5840         /* Load bootstrap code into instruction SRAM now,
5841          *   to prepare to load "initialize" uCode */
5842         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5843                 BSM_WR_CTRL_REG_BIT_START);
5844
5845         /* Wait for load of bootstrap uCode to finish */
5846         for (i = 0; i < 100; i++) {
5847                 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5848                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5849                         break;
5850                 udelay(10);
5851         }
5852         if (i < 100)
5853                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5854         else {
5855                 IWL_ERROR("BSM write did not complete!\n");
5856                 return -EIO;
5857         }
5858
5859         /* Enable future boot loads whenever power management unit triggers it
5860          *   (e.g. when powering back up after power-save shutdown) */
5861         iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5862                 BSM_WR_CTRL_REG_BIT_START_EN);
5863
5864         iwl3945_release_nic_access(priv);
5865
5866         return 0;
5867 }
5868
5869 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5870 {
5871         /* Remove all resets to allow NIC to operate */
5872         iwl3945_write32(priv, CSR_RESET, 0);
5873 }
5874
5875 static int iwl3945_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
5876 {
5877         desc->v_addr = pci_alloc_consistent(pci_dev, desc->len, &desc->p_addr);
5878         return (desc->v_addr != NULL) ? 0 : -ENOMEM;
5879 }
5880
5881 /**
5882  * iwl3945_read_ucode - Read uCode images from disk file.
5883  *
5884  * Copy into buffers for card to fetch via bus-mastering
5885  */
5886 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5887 {
5888         struct iwl3945_ucode *ucode;
5889         int ret = 0;
5890         const struct firmware *ucode_raw;
5891         /* firmware file name contains uCode/driver compatibility version */
5892         const char *name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode";
5893         u8 *src;
5894         size_t len;
5895         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5896
5897         /* Ask kernel firmware_class module to get the boot firmware off disk.
5898          * request_firmware() is synchronous, file is in memory on return. */
5899         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5900         if (ret < 0) {
5901                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5902                                 name, ret);
5903                 goto error;
5904         }
5905
5906         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5907                        name, ucode_raw->size);
5908
5909         /* Make sure that we got at least our header! */
5910         if (ucode_raw->size < sizeof(*ucode)) {
5911                 IWL_ERROR("File size way too small!\n");
5912                 ret = -EINVAL;
5913                 goto err_release;
5914         }
5915
5916         /* Data from ucode file:  header followed by uCode images */
5917         ucode = (void *)ucode_raw->data;
5918
5919         ver = le32_to_cpu(ucode->ver);
5920         inst_size = le32_to_cpu(ucode->inst_size);
5921         data_size = le32_to_cpu(ucode->data_size);
5922         init_size = le32_to_cpu(ucode->init_size);
5923         init_data_size = le32_to_cpu(ucode->init_data_size);
5924         boot_size = le32_to_cpu(ucode->boot_size);
5925
5926         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5927         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5928         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5929         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5930         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5931         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5932
5933         /* Verify size of file vs. image size info in file's header */
5934         if (ucode_raw->size < sizeof(*ucode) +
5935                 inst_size + data_size + init_size +
5936                 init_data_size + boot_size) {
5937
5938                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5939                                (int)ucode_raw->size);
5940                 ret = -EINVAL;
5941                 goto err_release;
5942         }
5943
5944         /* Verify that uCode images will fit in card's SRAM */
5945         if (inst_size > IWL_MAX_INST_SIZE) {
5946                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5947                                inst_size);
5948                 ret = -EINVAL;
5949                 goto err_release;
5950         }
5951
5952         if (data_size > IWL_MAX_DATA_SIZE) {
5953                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5954                                data_size);
5955                 ret = -EINVAL;
5956                 goto err_release;
5957         }
5958         if (init_size > IWL_MAX_INST_SIZE) {
5959                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5960                                 init_size);
5961                 ret = -EINVAL;
5962                 goto err_release;
5963         }
5964         if (init_data_size > IWL_MAX_DATA_SIZE) {
5965                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5966                                 init_data_size);
5967                 ret = -EINVAL;
5968                 goto err_release;
5969         }
5970         if (boot_size > IWL_MAX_BSM_SIZE) {
5971                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5972                                 boot_size);
5973                 ret = -EINVAL;
5974                 goto err_release;
5975         }
5976
5977         /* Allocate ucode buffers for card's bus-master loading ... */
5978
5979         /* Runtime instructions and 2 copies of data:
5980          * 1) unmodified from disk
5981          * 2) backup cache for save/restore during power-downs */
5982         priv->ucode_code.len = inst_size;
5983         iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5984
5985         priv->ucode_data.len = data_size;
5986         iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5987
5988         priv->ucode_data_backup.len = data_size;
5989         iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5990
5991         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5992             !priv->ucode_data_backup.v_addr)
5993                 goto err_pci_alloc;
5994
5995         /* Initialization instructions and data */
5996         if (init_size && init_data_size) {
5997                 priv->ucode_init.len = init_size;
5998                 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5999
6000                 priv->ucode_init_data.len = init_data_size;
6001                 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6002
6003                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6004                         goto err_pci_alloc;
6005         }
6006
6007         /* Bootstrap (instructions only, no data) */
6008         if (boot_size) {
6009                 priv->ucode_boot.len = boot_size;
6010                 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6011
6012                 if (!priv->ucode_boot.v_addr)
6013                         goto err_pci_alloc;
6014         }
6015
6016         /* Copy images into buffers for card's bus-master reads ... */
6017
6018         /* Runtime instructions (first block of data in file) */
6019         src = &ucode->data[0];
6020         len = priv->ucode_code.len;
6021         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6022         memcpy(priv->ucode_code.v_addr, src, len);
6023         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6024                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6025
6026         /* Runtime data (2nd block)
6027          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
6028         src = &ucode->data[inst_size];
6029         len = priv->ucode_data.len;
6030         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6031         memcpy(priv->ucode_data.v_addr, src, len);
6032         memcpy(priv->ucode_data_backup.v_addr, src, len);
6033
6034         /* Initialization instructions (3rd block) */
6035         if (init_size) {
6036                 src = &ucode->data[inst_size + data_size];
6037                 len = priv->ucode_init.len;
6038                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6039                                len);
6040                 memcpy(priv->ucode_init.v_addr, src, len);
6041         }
6042
6043         /* Initialization data (4th block) */
6044         if (init_data_size) {
6045                 src = &ucode->data[inst_size + data_size + init_size];
6046                 len = priv->ucode_init_data.len;
6047                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6048                                (int)len);
6049                 memcpy(priv->ucode_init_data.v_addr, src, len);
6050         }
6051
6052         /* Bootstrap instructions (5th block) */
6053         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6054         len = priv->ucode_boot.len;
6055         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6056                        (int)len);
6057         memcpy(priv->ucode_boot.v_addr, src, len);
6058
6059         /* We have our copies now, allow OS release its copies */
6060         release_firmware(ucode_raw);
6061         return 0;
6062
6063  err_pci_alloc:
6064         IWL_ERROR("failed to allocate pci memory\n");
6065         ret = -ENOMEM;
6066         iwl3945_dealloc_ucode_pci(priv);
6067
6068  err_release:
6069         release_firmware(ucode_raw);
6070
6071  error:
6072         return ret;
6073 }
6074
6075
6076 /**
6077  * iwl3945_set_ucode_ptrs - Set uCode address location
6078  *
6079  * Tell initialization uCode where to find runtime uCode.
6080  *
6081  * BSM registers initially contain pointers to initialization uCode.
6082  * We need to replace them to load runtime uCode inst and data,
6083  * and to save runtime data when powering down.
6084  */
6085 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
6086 {
6087         dma_addr_t pinst;
6088         dma_addr_t pdata;
6089         int rc = 0;
6090         unsigned long flags;
6091
6092         /* bits 31:0 for 3945 */
6093         pinst = priv->ucode_code.p_addr;
6094         pdata = priv->ucode_data_backup.p_addr;
6095
6096         spin_lock_irqsave(&priv->lock, flags);
6097         rc = iwl3945_grab_nic_access(priv);
6098         if (rc) {
6099                 spin_unlock_irqrestore(&priv->lock, flags);
6100                 return rc;
6101         }
6102
6103         /* Tell bootstrap uCode where to find image to load */
6104         iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6105         iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6106         iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6107                                  priv->ucode_data.len);
6108
6109         /* Inst bytecount must be last to set up, bit 31 signals uCode
6110          *   that all new ptr/size info is in place */
6111         iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6112                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6113
6114         iwl3945_release_nic_access(priv);
6115
6116         spin_unlock_irqrestore(&priv->lock, flags);
6117
6118         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6119
6120         return rc;
6121 }
6122
6123 /**
6124  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
6125  *
6126  * Called after REPLY_ALIVE notification received from "initialize" uCode.
6127  *
6128  * Tell "initialize" uCode to go ahead and load the runtime uCode.
6129  */
6130 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
6131 {
6132         /* Check alive response for "valid" sign from uCode */
6133         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6134                 /* We had an error bringing up the hardware, so take it
6135                  * all the way back down so we can try again */
6136                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6137                 goto restart;
6138         }
6139
6140         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6141          * This is a paranoid check, because we would not have gotten the
6142          * "initialize" alive if code weren't properly loaded.  */
6143         if (iwl3945_verify_ucode(priv)) {
6144                 /* Runtime instruction load was bad;
6145                  * take it all the way back down so we can try again */
6146                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6147                 goto restart;
6148         }
6149
6150         /* Send pointers to protocol/runtime uCode image ... init code will
6151          * load and launch runtime uCode, which will send us another "Alive"
6152          * notification. */
6153         IWL_DEBUG_INFO("Initialization Alive received.\n");
6154         if (iwl3945_set_ucode_ptrs(priv)) {
6155                 /* Runtime instruction load won't happen;
6156                  * take it all the way back down so we can try again */
6157                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6158                 goto restart;
6159         }
6160         return;
6161
6162  restart:
6163         queue_work(priv->workqueue, &priv->restart);
6164 }
6165
6166
6167 /**
6168  * iwl3945_alive_start - called after REPLY_ALIVE notification received
6169  *                   from protocol/runtime uCode (initialization uCode's
6170  *                   Alive gets handled by iwl3945_init_alive_start()).
6171  */
6172 static void iwl3945_alive_start(struct iwl3945_priv *priv)
6173 {
6174         int rc = 0;
6175         int thermal_spin = 0;
6176         u32 rfkill;
6177
6178         IWL_DEBUG_INFO("Runtime Alive received.\n");
6179
6180         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6181                 /* We had an error bringing up the hardware, so take it
6182                  * all the way back down so we can try again */
6183                 IWL_DEBUG_INFO("Alive failed.\n");
6184                 goto restart;
6185         }
6186
6187         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6188          * This is a paranoid check, because we would not have gotten the
6189          * "runtime" alive if code weren't properly loaded.  */
6190         if (iwl3945_verify_ucode(priv)) {
6191                 /* Runtime instruction load was bad;
6192                  * take it all the way back down so we can try again */
6193                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6194                 goto restart;
6195         }
6196
6197         iwl3945_clear_stations_table(priv);
6198
6199         rc = iwl3945_grab_nic_access(priv);
6200         if (rc) {
6201                 IWL_WARNING("Can not read rfkill status from adapter\n");
6202                 return;
6203         }
6204
6205         rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
6206         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
6207         iwl3945_release_nic_access(priv);
6208
6209         if (rfkill & 0x1) {
6210                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6211                 /* if rfkill is not on, then wait for thermal
6212                  * sensor in adapter to kick in */
6213                 while (iwl3945_hw_get_temperature(priv) == 0) {
6214                         thermal_spin++;
6215                         udelay(10);
6216                 }
6217
6218                 if (thermal_spin)
6219                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
6220                                        thermal_spin * 10);
6221         } else
6222                 set_bit(STATUS_RF_KILL_HW, &priv->status);
6223
6224         /* After the ALIVE response, we can send commands to 3945 uCode */
6225         set_bit(STATUS_ALIVE, &priv->status);
6226
6227         /* Clear out the uCode error bit if it is set */
6228         clear_bit(STATUS_FW_ERROR, &priv->status);
6229
6230         rc = iwl3945_init_channel_map(priv);
6231         if (rc) {
6232                 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6233                 return;
6234         }
6235
6236         iwl3945_init_geos(priv);
6237
6238         if (iwl3945_is_rfkill(priv))
6239                 return;
6240
6241         if (!priv->mac80211_registered) {
6242                 /* Unlock so any user space entry points can call back into
6243                  * the driver without a deadlock... */
6244                 mutex_unlock(&priv->mutex);
6245                 iwl3945_rate_control_register(priv->hw);
6246                 rc = ieee80211_register_hw(priv->hw);
6247                 priv->hw->conf.beacon_int = 100;
6248                 mutex_lock(&priv->mutex);
6249
6250                 if (rc) {
6251                         iwl3945_rate_control_unregister(priv->hw);
6252                         IWL_ERROR("Failed to register network "
6253                                   "device (error %d)\n", rc);
6254                         return;
6255                 }
6256
6257                 priv->mac80211_registered = 1;
6258
6259                 iwl3945_reset_channel_flag(priv);
6260         } else
6261                 ieee80211_start_queues(priv->hw);
6262
6263         priv->active_rate = priv->rates_mask;
6264         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6265
6266         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6267
6268         if (iwl3945_is_associated(priv)) {
6269                 struct iwl3945_rxon_cmd *active_rxon =
6270                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
6271
6272                 memcpy(&priv->staging_rxon, &priv->active_rxon,
6273                        sizeof(priv->staging_rxon));
6274                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6275         } else {
6276                 /* Initialize our rx_config data */
6277                 iwl3945_connection_init_rx_config(priv);
6278                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6279         }
6280
6281         /* Configure Bluetooth device coexistence support */
6282         iwl3945_send_bt_config(priv);
6283
6284         /* Configure the adapter for unassociated operation */
6285         iwl3945_commit_rxon(priv);
6286
6287         /* At this point, the NIC is initialized and operational */
6288         priv->notif_missed_beacons = 0;
6289         set_bit(STATUS_READY, &priv->status);
6290
6291         iwl3945_reg_txpower_periodic(priv);
6292
6293         IWL_DEBUG_INFO("ALIVE processing complete.\n");
6294
6295         if (priv->error_recovering)
6296                 iwl3945_error_recovery(priv);
6297
6298         return;
6299
6300  restart:
6301         queue_work(priv->workqueue, &priv->restart);
6302 }
6303
6304 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
6305
6306 static void __iwl3945_down(struct iwl3945_priv *priv)
6307 {
6308         unsigned long flags;
6309         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6310         struct ieee80211_conf *conf = NULL;
6311
6312         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6313
6314         conf = ieee80211_get_hw_conf(priv->hw);
6315
6316         if (!exit_pending)
6317                 set_bit(STATUS_EXIT_PENDING, &priv->status);
6318
6319         iwl3945_clear_stations_table(priv);
6320
6321         /* Unblock any waiting calls */
6322         wake_up_interruptible_all(&priv->wait_command_queue);
6323
6324         /* Wipe out the EXIT_PENDING status bit if we are not actually
6325          * exiting the module */
6326         if (!exit_pending)
6327                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6328
6329         /* stop and reset the on-board processor */
6330         iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6331
6332         /* tell the device to stop sending interrupts */
6333         iwl3945_disable_interrupts(priv);
6334
6335         if (priv->mac80211_registered)
6336                 ieee80211_stop_queues(priv->hw);
6337
6338         /* If we have not previously called iwl3945_init() then
6339          * clear all bits but the RF Kill and SUSPEND bits and return */
6340         if (!iwl3945_is_init(priv)) {
6341                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6342                                         STATUS_RF_KILL_HW |
6343                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6344                                         STATUS_RF_KILL_SW |
6345                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6346                                         STATUS_IN_SUSPEND;
6347                 goto exit;
6348         }
6349
6350         /* ...otherwise clear out all the status bits but the RF Kill and
6351          * SUSPEND bits and continue taking the NIC down. */
6352         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6353                                 STATUS_RF_KILL_HW |
6354                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6355                                 STATUS_RF_KILL_SW |
6356                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6357                                 STATUS_IN_SUSPEND |
6358                         test_bit(STATUS_FW_ERROR, &priv->status) <<
6359                                 STATUS_FW_ERROR;
6360
6361         spin_lock_irqsave(&priv->lock, flags);
6362         iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6363         spin_unlock_irqrestore(&priv->lock, flags);
6364
6365         iwl3945_hw_txq_ctx_stop(priv);
6366         iwl3945_hw_rxq_stop(priv);
6367
6368         spin_lock_irqsave(&priv->lock, flags);
6369         if (!iwl3945_grab_nic_access(priv)) {
6370                 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
6371                                          APMG_CLK_VAL_DMA_CLK_RQT);
6372                 iwl3945_release_nic_access(priv);
6373         }
6374         spin_unlock_irqrestore(&priv->lock, flags);
6375
6376         udelay(5);
6377
6378         iwl3945_hw_nic_stop_master(priv);
6379         iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6380         iwl3945_hw_nic_reset(priv);
6381
6382  exit:
6383         memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
6384
6385         if (priv->ibss_beacon)
6386                 dev_kfree_skb(priv->ibss_beacon);
6387         priv->ibss_beacon = NULL;
6388
6389         /* clear out any free frames */
6390         iwl3945_clear_free_frames(priv);
6391 }
6392
6393 static void iwl3945_down(struct iwl3945_priv *priv)
6394 {
6395         mutex_lock(&priv->mutex);
6396         __iwl3945_down(priv);
6397         mutex_unlock(&priv->mutex);
6398
6399         iwl3945_cancel_deferred_work(priv);
6400 }
6401
6402 #define MAX_HW_RESTARTS 5
6403
6404 static int __iwl3945_up(struct iwl3945_priv *priv)
6405 {
6406         DECLARE_MAC_BUF(mac);
6407         int rc, i;
6408
6409         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6410                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6411                 return -EIO;
6412         }
6413
6414         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6415                 IWL_WARNING("Radio disabled by SW RF kill (module "
6416                             "parameter)\n");
6417                 return 0;
6418         }
6419
6420         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6421                 IWL_ERROR("ucode not available for device bringup\n");
6422                 return -EIO;
6423         }
6424
6425         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6426
6427         rc = iwl3945_hw_nic_init(priv);
6428         if (rc) {
6429                 IWL_ERROR("Unable to int nic\n");
6430                 return rc;
6431         }
6432
6433         /* make sure rfkill handshake bits are cleared */
6434         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6435         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6436                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6437
6438         /* clear (again), then enable host interrupts */
6439         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6440         iwl3945_enable_interrupts(priv);
6441
6442         /* really make sure rfkill handshake bits are cleared */
6443         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6444         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6445
6446         /* Copy original ucode data image from disk into backup cache.
6447          * This will be used to initialize the on-board processor's
6448          * data SRAM for a clean start when the runtime program first loads. */
6449         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6450                         priv->ucode_data.len);
6451
6452         for (i = 0; i < MAX_HW_RESTARTS; i++) {
6453
6454                 iwl3945_clear_stations_table(priv);
6455
6456                 /* load bootstrap state machine,
6457                  * load bootstrap program into processor's memory,
6458                  * prepare to load the "initialize" uCode */
6459                 rc = iwl3945_load_bsm(priv);
6460
6461                 if (rc) {
6462                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6463                         continue;
6464                 }
6465
6466                 /* start card; "initialize" will load runtime ucode */
6467                 iwl3945_nic_start(priv);
6468
6469                 /* MAC Address location in EEPROM is same for 3945/4965 */
6470                 get_eeprom_mac(priv, priv->mac_addr);
6471                 IWL_DEBUG_INFO("MAC address: %s\n",
6472                                print_mac(mac, priv->mac_addr));
6473
6474                 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6475
6476                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6477
6478                 return 0;
6479         }
6480
6481         set_bit(STATUS_EXIT_PENDING, &priv->status);
6482         __iwl3945_down(priv);
6483
6484         /* tried to restart and config the device for as long as our
6485          * patience could withstand */
6486         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6487         return -EIO;
6488 }
6489
6490
6491 /*****************************************************************************
6492  *
6493  * Workqueue callbacks
6494  *
6495  *****************************************************************************/
6496
6497 static void iwl3945_bg_init_alive_start(struct work_struct *data)
6498 {
6499         struct iwl3945_priv *priv =
6500             container_of(data, struct iwl3945_priv, init_alive_start.work);
6501
6502         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6503                 return;
6504
6505         mutex_lock(&priv->mutex);
6506         iwl3945_init_alive_start(priv);
6507         mutex_unlock(&priv->mutex);
6508 }
6509
6510 static void iwl3945_bg_alive_start(struct work_struct *data)
6511 {
6512         struct iwl3945_priv *priv =
6513             container_of(data, struct iwl3945_priv, alive_start.work);
6514
6515         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6516                 return;
6517
6518         mutex_lock(&priv->mutex);
6519         iwl3945_alive_start(priv);
6520         mutex_unlock(&priv->mutex);
6521 }
6522
6523 static void iwl3945_bg_rf_kill(struct work_struct *work)
6524 {
6525         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
6526
6527         wake_up_interruptible(&priv->wait_command_queue);
6528
6529         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6530                 return;
6531
6532         mutex_lock(&priv->mutex);
6533
6534         if (!iwl3945_is_rfkill(priv)) {
6535                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6536                           "HW and/or SW RF Kill no longer active, restarting "
6537                           "device\n");
6538                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6539                         queue_work(priv->workqueue, &priv->restart);
6540         } else {
6541
6542                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6543                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6544                                           "disabled by SW switch\n");
6545                 else
6546                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6547                                     "Kill switch must be turned off for "
6548                                     "wireless networking to work.\n");
6549         }
6550         mutex_unlock(&priv->mutex);
6551 }
6552
6553 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6554
6555 static void iwl3945_bg_scan_check(struct work_struct *data)
6556 {
6557         struct iwl3945_priv *priv =
6558             container_of(data, struct iwl3945_priv, scan_check.work);
6559
6560         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6561                 return;
6562
6563         mutex_lock(&priv->mutex);
6564         if (test_bit(STATUS_SCANNING, &priv->status) ||
6565             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6566                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6567                           "Scan completion watchdog resetting adapter (%dms)\n",
6568                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6569
6570                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6571                         iwl3945_send_scan_abort(priv);
6572         }
6573         mutex_unlock(&priv->mutex);
6574 }
6575
6576 static void iwl3945_bg_request_scan(struct work_struct *data)
6577 {
6578         struct iwl3945_priv *priv =
6579             container_of(data, struct iwl3945_priv, request_scan);
6580         struct iwl3945_host_cmd cmd = {
6581                 .id = REPLY_SCAN_CMD,
6582                 .len = sizeof(struct iwl3945_scan_cmd),
6583                 .meta.flags = CMD_SIZE_HUGE,
6584         };
6585         int rc = 0;
6586         struct iwl3945_scan_cmd *scan;
6587         struct ieee80211_conf *conf = NULL;
6588         u8 direct_mask;
6589         int phymode;
6590
6591         conf = ieee80211_get_hw_conf(priv->hw);
6592
6593         mutex_lock(&priv->mutex);
6594
6595         if (!iwl3945_is_ready(priv)) {
6596                 IWL_WARNING("request scan called when driver not ready.\n");
6597                 goto done;
6598         }
6599
6600         /* Make sure the scan wasn't cancelled before this queued work
6601          * was given the chance to run... */
6602         if (!test_bit(STATUS_SCANNING, &priv->status))
6603                 goto done;
6604
6605         /* This should never be called or scheduled if there is currently
6606          * a scan active in the hardware. */
6607         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6608                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6609                                "Ignoring second request.\n");
6610                 rc = -EIO;
6611                 goto done;
6612         }
6613
6614         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6615                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6616                 goto done;
6617         }
6618
6619         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6620                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6621                 goto done;
6622         }
6623
6624         if (iwl3945_is_rfkill(priv)) {
6625                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6626                 goto done;
6627         }
6628
6629         if (!test_bit(STATUS_READY, &priv->status)) {
6630                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6631                 goto done;
6632         }
6633
6634         if (!priv->scan_bands) {
6635                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6636                 goto done;
6637         }
6638
6639         if (!priv->scan) {
6640                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6641                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6642                 if (!priv->scan) {
6643                         rc = -ENOMEM;
6644                         goto done;
6645                 }
6646         }
6647         scan = priv->scan;
6648         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6649
6650         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6651         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6652
6653         if (iwl3945_is_associated(priv)) {
6654                 u16 interval = 0;
6655                 u32 extra;
6656                 u32 suspend_time = 100;
6657                 u32 scan_suspend_time = 100;
6658                 unsigned long flags;
6659
6660                 IWL_DEBUG_INFO("Scanning while associated...\n");
6661
6662                 spin_lock_irqsave(&priv->lock, flags);
6663                 interval = priv->beacon_int;
6664                 spin_unlock_irqrestore(&priv->lock, flags);
6665
6666                 scan->suspend_time = 0;
6667                 scan->max_out_time = cpu_to_le32(200 * 1024);
6668                 if (!interval)
6669                         interval = suspend_time;
6670                 /*
6671                  * suspend time format:
6672                  *  0-19: beacon interval in usec (time before exec.)
6673                  * 20-23: 0
6674                  * 24-31: number of beacons (suspend between channels)
6675                  */
6676
6677                 extra = (suspend_time / interval) << 24;
6678                 scan_suspend_time = 0xFF0FFFFF &
6679                     (extra | ((suspend_time % interval) * 1024));
6680
6681                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6682                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6683                                scan_suspend_time, interval);
6684         }
6685
6686         /* We should add the ability for user to lock to PASSIVE ONLY */
6687         if (priv->one_direct_scan) {
6688                 IWL_DEBUG_SCAN
6689                     ("Kicking off one direct scan for '%s'\n",
6690                      iwl3945_escape_essid(priv->direct_ssid,
6691                                       priv->direct_ssid_len));
6692                 scan->direct_scan[0].id = WLAN_EID_SSID;
6693                 scan->direct_scan[0].len = priv->direct_ssid_len;
6694                 memcpy(scan->direct_scan[0].ssid,
6695                        priv->direct_ssid, priv->direct_ssid_len);
6696                 direct_mask = 1;
6697         } else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6698                 scan->direct_scan[0].id = WLAN_EID_SSID;
6699                 scan->direct_scan[0].len = priv->essid_len;
6700                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6701                 direct_mask = 1;
6702         } else
6703                 direct_mask = 0;
6704
6705         /* We don't build a direct scan probe request; the uCode will do
6706          * that based on the direct_mask added to each channel entry */
6707         scan->tx_cmd.len = cpu_to_le16(
6708                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6709                         IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6710         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6711         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6712         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6713
6714         /* flags + rate selection */
6715
6716         switch (priv->scan_bands) {
6717         case 2:
6718                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6719                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6720                 scan->good_CRC_th = 0;
6721                 phymode = MODE_IEEE80211G;
6722                 break;
6723
6724         case 1:
6725                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6726                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6727                 phymode = MODE_IEEE80211A;
6728                 break;
6729
6730         default:
6731                 IWL_WARNING("Invalid scan band count\n");
6732                 goto done;
6733         }
6734
6735         /* select Rx antennas */
6736         scan->flags |= iwl3945_get_antenna_flags(priv);
6737
6738         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6739                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6740
6741         if (direct_mask)
6742                 IWL_DEBUG_SCAN
6743                     ("Initiating direct scan for %s.\n",
6744                      iwl3945_escape_essid(priv->essid, priv->essid_len));
6745         else
6746                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6747
6748         scan->channel_count =
6749                 iwl3945_get_channels_for_scan(
6750                         priv, phymode, 1, /* active */
6751                         direct_mask,
6752                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6753
6754         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6755             scan->channel_count * sizeof(struct iwl3945_scan_channel);
6756         cmd.data = scan;
6757         scan->len = cpu_to_le16(cmd.len);
6758
6759         set_bit(STATUS_SCAN_HW, &priv->status);
6760         rc = iwl3945_send_cmd_sync(priv, &cmd);
6761         if (rc)
6762                 goto done;
6763
6764         queue_delayed_work(priv->workqueue, &priv->scan_check,
6765                            IWL_SCAN_CHECK_WATCHDOG);
6766
6767         mutex_unlock(&priv->mutex);
6768         return;
6769
6770  done:
6771         /* inform mac80211 scan aborted */
6772         queue_work(priv->workqueue, &priv->scan_completed);
6773         mutex_unlock(&priv->mutex);
6774 }
6775
6776 static void iwl3945_bg_up(struct work_struct *data)
6777 {
6778         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6779
6780         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6781                 return;
6782
6783         mutex_lock(&priv->mutex);
6784         __iwl3945_up(priv);
6785         mutex_unlock(&priv->mutex);
6786 }
6787
6788 static void iwl3945_bg_restart(struct work_struct *data)
6789 {
6790         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6791
6792         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6793                 return;
6794
6795         iwl3945_down(priv);
6796         queue_work(priv->workqueue, &priv->up);
6797 }
6798
6799 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6800 {
6801         struct iwl3945_priv *priv =
6802             container_of(data, struct iwl3945_priv, rx_replenish);
6803
6804         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6805                 return;
6806
6807         mutex_lock(&priv->mutex);
6808         iwl3945_rx_replenish(priv);
6809         mutex_unlock(&priv->mutex);
6810 }
6811
6812 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6813
6814 static void iwl3945_bg_post_associate(struct work_struct *data)
6815 {
6816         struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
6817                                              post_associate.work);
6818
6819         int rc = 0;
6820         struct ieee80211_conf *conf = NULL;
6821         DECLARE_MAC_BUF(mac);
6822
6823         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6824                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6825                 return;
6826         }
6827
6828
6829         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6830                         priv->assoc_id,
6831                         print_mac(mac, priv->active_rxon.bssid_addr));
6832
6833         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6834                 return;
6835
6836         mutex_lock(&priv->mutex);
6837
6838         if (!priv->interface_id || !priv->is_open) {
6839                 mutex_unlock(&priv->mutex);
6840                 return;
6841         }
6842         iwl3945_scan_cancel_timeout(priv, 200);
6843
6844         conf = ieee80211_get_hw_conf(priv->hw);
6845
6846         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6847         iwl3945_commit_rxon(priv);
6848
6849         memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6850         iwl3945_setup_rxon_timing(priv);
6851         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6852                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6853         if (rc)
6854                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6855                             "Attempting to continue.\n");
6856
6857         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6858
6859         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6860
6861         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6862                         priv->assoc_id, priv->beacon_int);
6863
6864         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6865                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6866         else
6867                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6868
6869         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6870                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6871                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6872                 else
6873                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6874
6875                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6876                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6877
6878         }
6879
6880         iwl3945_commit_rxon(priv);
6881
6882         switch (priv->iw_mode) {
6883         case IEEE80211_IF_TYPE_STA:
6884                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6885                 break;
6886
6887         case IEEE80211_IF_TYPE_IBSS:
6888
6889                 /* clear out the station table */
6890                 iwl3945_clear_stations_table(priv);
6891
6892                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6893                 iwl3945_add_station(priv, priv->bssid, 0, 0);
6894                 iwl3945_sync_sta(priv, IWL_STA_ID,
6895                                  (priv->phymode == MODE_IEEE80211A)?
6896                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6897                                  CMD_ASYNC);
6898                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6899                 iwl3945_send_beacon_cmd(priv);
6900
6901                 break;
6902
6903         default:
6904                  IWL_ERROR("%s Should not be called in %d mode\n",
6905                            __FUNCTION__, priv->iw_mode);
6906                 break;
6907         }
6908
6909         iwl3945_sequence_reset(priv);
6910
6911 #ifdef CONFIG_IWL3945_QOS
6912         iwl3945_activate_qos(priv, 0);
6913 #endif /* CONFIG_IWL3945_QOS */
6914         /* we have just associated, don't start scan too early */
6915         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6916         mutex_unlock(&priv->mutex);
6917 }
6918
6919 static void iwl3945_bg_abort_scan(struct work_struct *work)
6920 {
6921         struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6922
6923         if (!iwl3945_is_ready(priv))
6924                 return;
6925
6926         mutex_lock(&priv->mutex);
6927
6928         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6929         iwl3945_send_scan_abort(priv);
6930
6931         mutex_unlock(&priv->mutex);
6932 }
6933
6934 static void iwl3945_bg_scan_completed(struct work_struct *work)
6935 {
6936         struct iwl3945_priv *priv =
6937             container_of(work, struct iwl3945_priv, scan_completed);
6938
6939         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6940
6941         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6942                 return;
6943
6944         ieee80211_scan_completed(priv->hw);
6945
6946         /* Since setting the TXPOWER may have been deferred while
6947          * performing the scan, fire one off */
6948         mutex_lock(&priv->mutex);
6949         iwl3945_hw_reg_send_txpower(priv);
6950         mutex_unlock(&priv->mutex);
6951 }
6952
6953 /*****************************************************************************
6954  *
6955  * mac80211 entry point functions
6956  *
6957  *****************************************************************************/
6958
6959 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6960 {
6961         struct iwl3945_priv *priv = hw->priv;
6962
6963         IWL_DEBUG_MAC80211("enter\n");
6964
6965         /* we should be verifying the device is ready to be opened */
6966         mutex_lock(&priv->mutex);
6967
6968         priv->is_open = 1;
6969
6970         if (!iwl3945_is_rfkill(priv))
6971                 ieee80211_start_queues(priv->hw);
6972
6973         mutex_unlock(&priv->mutex);
6974         IWL_DEBUG_MAC80211("leave\n");
6975         return 0;
6976 }
6977
6978 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6979 {
6980         struct iwl3945_priv *priv = hw->priv;
6981
6982         IWL_DEBUG_MAC80211("enter\n");
6983
6984
6985         mutex_lock(&priv->mutex);
6986         /* stop mac, cancel any scan request and clear
6987          * RXON_FILTER_ASSOC_MSK BIT
6988          */
6989         priv->is_open = 0;
6990         iwl3945_scan_cancel_timeout(priv, 100);
6991         cancel_delayed_work(&priv->post_associate);
6992         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6993         iwl3945_commit_rxon(priv);
6994         mutex_unlock(&priv->mutex);
6995
6996         IWL_DEBUG_MAC80211("leave\n");
6997 }
6998
6999 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7000                       struct ieee80211_tx_control *ctl)
7001 {
7002         struct iwl3945_priv *priv = hw->priv;
7003
7004         IWL_DEBUG_MAC80211("enter\n");
7005
7006         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7007                 IWL_DEBUG_MAC80211("leave - monitor\n");
7008                 return -1;
7009         }
7010
7011         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7012                      ctl->tx_rate);
7013
7014         if (iwl3945_tx_skb(priv, skb, ctl))
7015                 dev_kfree_skb_any(skb);
7016
7017         IWL_DEBUG_MAC80211("leave\n");
7018         return 0;
7019 }
7020
7021 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
7022                                  struct ieee80211_if_init_conf *conf)
7023 {
7024         struct iwl3945_priv *priv = hw->priv;
7025         unsigned long flags;
7026         DECLARE_MAC_BUF(mac);
7027
7028         IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7029
7030         if (priv->interface_id) {
7031                 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7032                 return -EOPNOTSUPP;
7033         }
7034
7035         spin_lock_irqsave(&priv->lock, flags);
7036         priv->interface_id = conf->if_id;
7037
7038         spin_unlock_irqrestore(&priv->lock, flags);
7039
7040         mutex_lock(&priv->mutex);
7041
7042         if (conf->mac_addr) {
7043                 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
7044                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7045         }
7046
7047         iwl3945_set_mode(priv, conf->type);
7048
7049         IWL_DEBUG_MAC80211("leave\n");
7050         mutex_unlock(&priv->mutex);
7051
7052         return 0;
7053 }
7054
7055 /**
7056  * iwl3945_mac_config - mac80211 config callback
7057  *
7058  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7059  * be set inappropriately and the driver currently sets the hardware up to
7060  * use it whenever needed.
7061  */
7062 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7063 {
7064         struct iwl3945_priv *priv = hw->priv;
7065         const struct iwl3945_channel_info *ch_info;
7066         unsigned long flags;
7067
7068         mutex_lock(&priv->mutex);
7069         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7070
7071         if (!iwl3945_is_ready(priv)) {
7072                 IWL_DEBUG_MAC80211("leave - not ready\n");
7073                 mutex_unlock(&priv->mutex);
7074                 return -EIO;
7075         }
7076
7077         /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7078          * what is exposed through include/ declarations */
7079         if (unlikely(!iwl3945_param_disable_hw_scan &&
7080                      test_bit(STATUS_SCANNING, &priv->status))) {
7081                 IWL_DEBUG_MAC80211("leave - scanning\n");
7082                 mutex_unlock(&priv->mutex);
7083                 return 0;
7084         }
7085
7086         spin_lock_irqsave(&priv->lock, flags);
7087
7088         ch_info = iwl3945_get_channel_info(priv, conf->phymode, conf->channel);
7089         if (!is_channel_valid(ch_info)) {
7090                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7091                                conf->channel, conf->phymode);
7092                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7093                 spin_unlock_irqrestore(&priv->lock, flags);
7094                 mutex_unlock(&priv->mutex);
7095                 return -EINVAL;
7096         }
7097
7098         iwl3945_set_rxon_channel(priv, conf->phymode, conf->channel);
7099
7100         iwl3945_set_flags_for_phymode(priv, conf->phymode);
7101
7102         /* The list of supported rates and rate mask can be different
7103          * for each phymode; since the phymode may have changed, reset
7104          * the rate mask to what mac80211 lists */
7105         iwl3945_set_rate(priv);
7106
7107         spin_unlock_irqrestore(&priv->lock, flags);
7108
7109 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7110         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7111                 iwl3945_hw_channel_switch(priv, conf->channel);
7112                 mutex_unlock(&priv->mutex);
7113                 return 0;
7114         }
7115 #endif
7116
7117         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
7118
7119         if (!conf->radio_enabled) {
7120                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7121                 mutex_unlock(&priv->mutex);
7122                 return 0;
7123         }
7124
7125         if (iwl3945_is_rfkill(priv)) {
7126                 IWL_DEBUG_MAC80211("leave - RF kill\n");
7127                 mutex_unlock(&priv->mutex);
7128                 return -EIO;
7129         }
7130
7131         iwl3945_set_rate(priv);
7132
7133         if (memcmp(&priv->active_rxon,
7134                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
7135                 iwl3945_commit_rxon(priv);
7136         else
7137                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7138
7139         IWL_DEBUG_MAC80211("leave\n");
7140
7141         mutex_unlock(&priv->mutex);
7142
7143         return 0;
7144 }
7145
7146 static void iwl3945_config_ap(struct iwl3945_priv *priv)
7147 {
7148         int rc = 0;
7149
7150         if (priv->status & STATUS_EXIT_PENDING)
7151                 return;
7152
7153         /* The following should be done only at AP bring up */
7154         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7155
7156                 /* RXON - unassoc (to set timing command) */
7157                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7158                 iwl3945_commit_rxon(priv);
7159
7160                 /* RXON Timing */
7161                 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
7162                 iwl3945_setup_rxon_timing(priv);
7163                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7164                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
7165                 if (rc)
7166                         IWL_WARNING("REPLY_RXON_TIMING failed - "
7167                                         "Attempting to continue.\n");
7168
7169                 /* FIXME: what should be the assoc_id for AP? */
7170                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7171                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7172                         priv->staging_rxon.flags |=
7173                                 RXON_FLG_SHORT_PREAMBLE_MSK;
7174                 else
7175                         priv->staging_rxon.flags &=
7176                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7177
7178                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7179                         if (priv->assoc_capability &
7180                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7181                                 priv->staging_rxon.flags |=
7182                                         RXON_FLG_SHORT_SLOT_MSK;
7183                         else
7184                                 priv->staging_rxon.flags &=
7185                                         ~RXON_FLG_SHORT_SLOT_MSK;
7186
7187                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7188                                 priv->staging_rxon.flags &=
7189                                         ~RXON_FLG_SHORT_SLOT_MSK;
7190                 }
7191                 /* restore RXON assoc */
7192                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7193                 iwl3945_commit_rxon(priv);
7194                 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
7195         }
7196         iwl3945_send_beacon_cmd(priv);
7197
7198         /* FIXME - we need to add code here to detect a totally new
7199          * configuration, reset the AP, unassoc, rxon timing, assoc,
7200          * clear sta table, add BCAST sta... */
7201 }
7202
7203 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7204                                     struct ieee80211_if_conf *conf)
7205 {
7206         struct iwl3945_priv *priv = hw->priv;
7207         DECLARE_MAC_BUF(mac);
7208         unsigned long flags;
7209         int rc;
7210
7211         if (conf == NULL)
7212                 return -EIO;
7213
7214         /* XXX: this MUST use conf->mac_addr */
7215
7216         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7217             (!conf->beacon || !conf->ssid_len)) {
7218                 IWL_DEBUG_MAC80211
7219                     ("Leaving in AP mode because HostAPD is not ready.\n");
7220                 return 0;
7221         }
7222
7223         mutex_lock(&priv->mutex);
7224
7225         IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7226         if (conf->bssid)
7227                 IWL_DEBUG_MAC80211("bssid: %s\n",
7228                                    print_mac(mac, conf->bssid));
7229
7230 /*
7231  * very dubious code was here; the probe filtering flag is never set:
7232  *
7233         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7234             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7235  */
7236         if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7237                 IWL_DEBUG_MAC80211("leave - scanning\n");
7238                 mutex_unlock(&priv->mutex);
7239                 return 0;
7240         }
7241
7242         if (priv->interface_id != if_id) {
7243                 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7244                 mutex_unlock(&priv->mutex);
7245                 return 0;
7246         }
7247
7248         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7249                 if (!conf->bssid) {
7250                         conf->bssid = priv->mac_addr;
7251                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7252                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7253                                            print_mac(mac, conf->bssid));
7254                 }
7255                 if (priv->ibss_beacon)
7256                         dev_kfree_skb(priv->ibss_beacon);
7257
7258                 priv->ibss_beacon = conf->beacon;
7259         }
7260
7261         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7262             !is_multicast_ether_addr(conf->bssid)) {
7263                 /* If there is currently a HW scan going on in the background
7264                  * then we need to cancel it else the RXON below will fail. */
7265                 if (iwl3945_scan_cancel_timeout(priv, 100)) {
7266                         IWL_WARNING("Aborted scan still in progress "
7267                                     "after 100ms\n");
7268                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7269                         mutex_unlock(&priv->mutex);
7270                         return -EAGAIN;
7271                 }
7272                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7273
7274                 /* TODO: Audit driver for usage of these members and see
7275                  * if mac80211 deprecates them (priv->bssid looks like it
7276                  * shouldn't be there, but I haven't scanned the IBSS code
7277                  * to verify) - jpk */
7278                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7279
7280                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7281                         iwl3945_config_ap(priv);
7282                 else {
7283                         rc = iwl3945_commit_rxon(priv);
7284                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7285                                 iwl3945_add_station(priv,
7286                                         priv->active_rxon.bssid_addr, 1, 0);
7287                 }
7288
7289         } else {
7290                 iwl3945_scan_cancel_timeout(priv, 100);
7291                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7292                 iwl3945_commit_rxon(priv);
7293         }
7294
7295         spin_lock_irqsave(&priv->lock, flags);
7296         if (!conf->ssid_len)
7297                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7298         else
7299                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7300
7301         priv->essid_len = conf->ssid_len;
7302         spin_unlock_irqrestore(&priv->lock, flags);
7303
7304         IWL_DEBUG_MAC80211("leave\n");
7305         mutex_unlock(&priv->mutex);
7306
7307         return 0;
7308 }
7309
7310 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
7311                                  unsigned int changed_flags,
7312                                  unsigned int *total_flags,
7313                                  int mc_count, struct dev_addr_list *mc_list)
7314 {
7315         /*
7316          * XXX: dummy
7317          * see also iwl3945_connection_init_rx_config
7318          */
7319         *total_flags = 0;
7320 }
7321
7322 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
7323                                      struct ieee80211_if_init_conf *conf)
7324 {
7325         struct iwl3945_priv *priv = hw->priv;
7326
7327         IWL_DEBUG_MAC80211("enter\n");
7328
7329         mutex_lock(&priv->mutex);
7330
7331         iwl3945_scan_cancel_timeout(priv, 100);
7332         cancel_delayed_work(&priv->post_associate);
7333         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7334         iwl3945_commit_rxon(priv);
7335
7336         if (priv->interface_id == conf->if_id) {
7337                 priv->interface_id = 0;
7338                 memset(priv->bssid, 0, ETH_ALEN);
7339                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7340                 priv->essid_len = 0;
7341         }
7342         mutex_unlock(&priv->mutex);
7343
7344         IWL_DEBUG_MAC80211("leave\n");
7345
7346 }
7347
7348 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7349 {
7350         int rc = 0;
7351         unsigned long flags;
7352         struct iwl3945_priv *priv = hw->priv;
7353
7354         IWL_DEBUG_MAC80211("enter\n");
7355
7356         mutex_lock(&priv->mutex);
7357         spin_lock_irqsave(&priv->lock, flags);
7358
7359         if (!iwl3945_is_ready_rf(priv)) {
7360                 rc = -EIO;
7361                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7362                 goto out_unlock;
7363         }
7364
7365         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
7366                 rc = -EIO;
7367                 IWL_ERROR("ERROR: APs don't scan\n");
7368                 goto out_unlock;
7369         }
7370
7371         /* we don't schedule scan within next_scan_jiffies period */
7372         if (priv->next_scan_jiffies &&
7373                         time_after(priv->next_scan_jiffies, jiffies)) {
7374                 rc = -EAGAIN;
7375                 goto out_unlock;
7376         }
7377         /* if we just finished scan ask for delay */
7378         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7379                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
7380                 rc = -EAGAIN;
7381                 goto out_unlock;
7382         }
7383         if (len) {
7384                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7385                                iwl3945_escape_essid(ssid, len), (int)len);
7386
7387                 priv->one_direct_scan = 1;
7388                 priv->direct_ssid_len = (u8)
7389                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7390                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7391         } else
7392                 priv->one_direct_scan = 0;
7393
7394         rc = iwl3945_scan_initiate(priv);
7395
7396         IWL_DEBUG_MAC80211("leave\n");
7397
7398 out_unlock:
7399         spin_unlock_irqrestore(&priv->lock, flags);
7400         mutex_unlock(&priv->mutex);
7401
7402         return rc;
7403 }
7404
7405 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7406                            const u8 *local_addr, const u8 *addr,
7407                            struct ieee80211_key_conf *key)
7408 {
7409         struct iwl3945_priv *priv = hw->priv;
7410         int rc = 0;
7411         u8 sta_id;
7412
7413         IWL_DEBUG_MAC80211("enter\n");
7414
7415         if (!iwl3945_param_hwcrypto) {
7416                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7417                 return -EOPNOTSUPP;
7418         }
7419
7420         if (is_zero_ether_addr(addr))
7421                 /* only support pairwise keys */
7422                 return -EOPNOTSUPP;
7423
7424         sta_id = iwl3945_hw_find_station(priv, addr);
7425         if (sta_id == IWL_INVALID_STATION) {
7426                 DECLARE_MAC_BUF(mac);
7427
7428                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7429                                    print_mac(mac, addr));
7430                 return -EINVAL;
7431         }
7432
7433         mutex_lock(&priv->mutex);
7434
7435         iwl3945_scan_cancel_timeout(priv, 100);
7436
7437         switch (cmd) {
7438         case  SET_KEY:
7439                 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7440                 if (!rc) {
7441                         iwl3945_set_rxon_hwcrypto(priv, 1);
7442                         iwl3945_commit_rxon(priv);
7443                         key->hw_key_idx = sta_id;
7444                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7445                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7446                 }
7447                 break;
7448         case DISABLE_KEY:
7449                 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7450                 if (!rc) {
7451                         iwl3945_set_rxon_hwcrypto(priv, 0);
7452                         iwl3945_commit_rxon(priv);
7453                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7454                 }
7455                 break;
7456         default:
7457                 rc = -EINVAL;
7458         }
7459
7460         IWL_DEBUG_MAC80211("leave\n");
7461         mutex_unlock(&priv->mutex);
7462
7463         return rc;
7464 }
7465
7466 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7467                            const struct ieee80211_tx_queue_params *params)
7468 {
7469         struct iwl3945_priv *priv = hw->priv;
7470 #ifdef CONFIG_IWL3945_QOS
7471         unsigned long flags;
7472         int q;
7473 #endif /* CONFIG_IWL3945_QOS */
7474
7475         IWL_DEBUG_MAC80211("enter\n");
7476
7477         if (!iwl3945_is_ready_rf(priv)) {
7478                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7479                 return -EIO;
7480         }
7481
7482         if (queue >= AC_NUM) {
7483                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7484                 return 0;
7485         }
7486
7487 #ifdef CONFIG_IWL3945_QOS
7488         if (!priv->qos_data.qos_enable) {
7489                 priv->qos_data.qos_active = 0;
7490                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7491                 return 0;
7492         }
7493         q = AC_NUM - 1 - queue;
7494
7495         spin_lock_irqsave(&priv->lock, flags);
7496
7497         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7498         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7499         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7500         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7501                         cpu_to_le16((params->burst_time * 100));
7502
7503         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7504         priv->qos_data.qos_active = 1;
7505
7506         spin_unlock_irqrestore(&priv->lock, flags);
7507
7508         mutex_lock(&priv->mutex);
7509         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7510                 iwl3945_activate_qos(priv, 1);
7511         else if (priv->assoc_id && iwl3945_is_associated(priv))
7512                 iwl3945_activate_qos(priv, 0);
7513
7514         mutex_unlock(&priv->mutex);
7515
7516 #endif /*CONFIG_IWL3945_QOS */
7517
7518         IWL_DEBUG_MAC80211("leave\n");
7519         return 0;
7520 }
7521
7522 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7523                                 struct ieee80211_tx_queue_stats *stats)
7524 {
7525         struct iwl3945_priv *priv = hw->priv;
7526         int i, avail;
7527         struct iwl3945_tx_queue *txq;
7528         struct iwl3945_queue *q;
7529         unsigned long flags;
7530
7531         IWL_DEBUG_MAC80211("enter\n");
7532
7533         if (!iwl3945_is_ready_rf(priv)) {
7534                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7535                 return -EIO;
7536         }
7537
7538         spin_lock_irqsave(&priv->lock, flags);
7539
7540         for (i = 0; i < AC_NUM; i++) {
7541                 txq = &priv->txq[i];
7542                 q = &txq->q;
7543                 avail = iwl3945_queue_space(q);
7544
7545                 stats->data[i].len = q->n_window - avail;
7546                 stats->data[i].limit = q->n_window - q->high_mark;
7547                 stats->data[i].count = q->n_window;
7548
7549         }
7550         spin_unlock_irqrestore(&priv->lock, flags);
7551
7552         IWL_DEBUG_MAC80211("leave\n");
7553
7554         return 0;
7555 }
7556
7557 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7558                              struct ieee80211_low_level_stats *stats)
7559 {
7560         IWL_DEBUG_MAC80211("enter\n");
7561         IWL_DEBUG_MAC80211("leave\n");
7562
7563         return 0;
7564 }
7565
7566 static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
7567 {
7568         IWL_DEBUG_MAC80211("enter\n");
7569         IWL_DEBUG_MAC80211("leave\n");
7570
7571         return 0;
7572 }
7573
7574 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7575 {
7576         struct iwl3945_priv *priv = hw->priv;
7577         unsigned long flags;
7578
7579         mutex_lock(&priv->mutex);
7580         IWL_DEBUG_MAC80211("enter\n");
7581
7582 #ifdef CONFIG_IWL3945_QOS
7583         iwl3945_reset_qos(priv);
7584 #endif
7585         cancel_delayed_work(&priv->post_associate);
7586
7587         spin_lock_irqsave(&priv->lock, flags);
7588         priv->assoc_id = 0;
7589         priv->assoc_capability = 0;
7590         priv->call_post_assoc_from_beacon = 0;
7591
7592         /* new association get rid of ibss beacon skb */
7593         if (priv->ibss_beacon)
7594                 dev_kfree_skb(priv->ibss_beacon);
7595
7596         priv->ibss_beacon = NULL;
7597
7598         priv->beacon_int = priv->hw->conf.beacon_int;
7599         priv->timestamp1 = 0;
7600         priv->timestamp0 = 0;
7601         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7602                 priv->beacon_int = 0;
7603
7604         spin_unlock_irqrestore(&priv->lock, flags);
7605
7606         /* we are restarting association process
7607          * clear RXON_FILTER_ASSOC_MSK bit
7608         */
7609         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7610                 iwl3945_scan_cancel_timeout(priv, 100);
7611                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7612                 iwl3945_commit_rxon(priv);
7613         }
7614
7615         /* Per mac80211.h: This is only used in IBSS mode... */
7616         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7617
7618                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7619                 mutex_unlock(&priv->mutex);
7620                 return;
7621         }
7622
7623         if (!iwl3945_is_ready_rf(priv)) {
7624                 IWL_DEBUG_MAC80211("leave - not ready\n");
7625                 mutex_unlock(&priv->mutex);
7626                 return;
7627         }
7628
7629         priv->only_active_channel = 0;
7630
7631         iwl3945_set_rate(priv);
7632
7633         mutex_unlock(&priv->mutex);
7634
7635         IWL_DEBUG_MAC80211("leave\n");
7636
7637 }
7638
7639 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7640                                  struct ieee80211_tx_control *control)
7641 {
7642         struct iwl3945_priv *priv = hw->priv;
7643         unsigned long flags;
7644
7645         mutex_lock(&priv->mutex);
7646         IWL_DEBUG_MAC80211("enter\n");
7647
7648         if (!iwl3945_is_ready_rf(priv)) {
7649                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7650                 mutex_unlock(&priv->mutex);
7651                 return -EIO;
7652         }
7653
7654         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7655                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7656                 mutex_unlock(&priv->mutex);
7657                 return -EIO;
7658         }
7659
7660         spin_lock_irqsave(&priv->lock, flags);
7661
7662         if (priv->ibss_beacon)
7663                 dev_kfree_skb(priv->ibss_beacon);
7664
7665         priv->ibss_beacon = skb;
7666
7667         priv->assoc_id = 0;
7668
7669         IWL_DEBUG_MAC80211("leave\n");
7670         spin_unlock_irqrestore(&priv->lock, flags);
7671
7672 #ifdef CONFIG_IWL3945_QOS
7673         iwl3945_reset_qos(priv);
7674 #endif
7675
7676         queue_work(priv->workqueue, &priv->post_associate.work);
7677
7678         mutex_unlock(&priv->mutex);
7679
7680         return 0;
7681 }
7682
7683 /*****************************************************************************
7684  *
7685  * sysfs attributes
7686  *
7687  *****************************************************************************/
7688
7689 #ifdef CONFIG_IWL3945_DEBUG
7690
7691 /*
7692  * The following adds a new attribute to the sysfs representation
7693  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7694  * used for controlling the debug level.
7695  *
7696  * See the level definitions in iwl for details.
7697  */
7698
7699 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7700 {
7701         return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7702 }
7703 static ssize_t store_debug_level(struct device_driver *d,
7704                                  const char *buf, size_t count)
7705 {
7706         char *p = (char *)buf;
7707         u32 val;
7708
7709         val = simple_strtoul(p, &p, 0);
7710         if (p == buf)
7711                 printk(KERN_INFO DRV_NAME
7712                        ": %s is not in hex or decimal form.\n", buf);
7713         else
7714                 iwl3945_debug_level = val;
7715
7716         return strnlen(buf, count);
7717 }
7718
7719 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7720                    show_debug_level, store_debug_level);
7721
7722 #endif /* CONFIG_IWL3945_DEBUG */
7723
7724 static ssize_t show_rf_kill(struct device *d,
7725                             struct device_attribute *attr, char *buf)
7726 {
7727         /*
7728          * 0 - RF kill not enabled
7729          * 1 - SW based RF kill active (sysfs)
7730          * 2 - HW based RF kill active
7731          * 3 - Both HW and SW based RF kill active
7732          */
7733         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7734         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7735                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7736
7737         return sprintf(buf, "%i\n", val);
7738 }
7739
7740 static ssize_t store_rf_kill(struct device *d,
7741                              struct device_attribute *attr,
7742                              const char *buf, size_t count)
7743 {
7744         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7745
7746         mutex_lock(&priv->mutex);
7747         iwl3945_radio_kill_sw(priv, buf[0] == '1');
7748         mutex_unlock(&priv->mutex);
7749
7750         return count;
7751 }
7752
7753 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7754
7755 static ssize_t show_temperature(struct device *d,
7756                                 struct device_attribute *attr, char *buf)
7757 {
7758         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7759
7760         if (!iwl3945_is_alive(priv))
7761                 return -EAGAIN;
7762
7763         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7764 }
7765
7766 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7767
7768 static ssize_t show_rs_window(struct device *d,
7769                               struct device_attribute *attr,
7770                               char *buf)
7771 {
7772         struct iwl3945_priv *priv = d->driver_data;
7773         return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7774 }
7775 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7776
7777 static ssize_t show_tx_power(struct device *d,
7778                              struct device_attribute *attr, char *buf)
7779 {
7780         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7781         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7782 }
7783
7784 static ssize_t store_tx_power(struct device *d,
7785                               struct device_attribute *attr,
7786                               const char *buf, size_t count)
7787 {
7788         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7789         char *p = (char *)buf;
7790         u32 val;
7791
7792         val = simple_strtoul(p, &p, 10);
7793         if (p == buf)
7794                 printk(KERN_INFO DRV_NAME
7795                        ": %s is not in decimal form.\n", buf);
7796         else
7797                 iwl3945_hw_reg_set_txpower(priv, val);
7798
7799         return count;
7800 }
7801
7802 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7803
7804 static ssize_t show_flags(struct device *d,
7805                           struct device_attribute *attr, char *buf)
7806 {
7807         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7808
7809         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7810 }
7811
7812 static ssize_t store_flags(struct device *d,
7813                            struct device_attribute *attr,
7814                            const char *buf, size_t count)
7815 {
7816         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7817         u32 flags = simple_strtoul(buf, NULL, 0);
7818
7819         mutex_lock(&priv->mutex);
7820         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7821                 /* Cancel any currently running scans... */
7822                 if (iwl3945_scan_cancel_timeout(priv, 100))
7823                         IWL_WARNING("Could not cancel scan.\n");
7824                 else {
7825                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7826                                        flags);
7827                         priv->staging_rxon.flags = cpu_to_le32(flags);
7828                         iwl3945_commit_rxon(priv);
7829                 }
7830         }
7831         mutex_unlock(&priv->mutex);
7832
7833         return count;
7834 }
7835
7836 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7837
7838 static ssize_t show_filter_flags(struct device *d,
7839                                  struct device_attribute *attr, char *buf)
7840 {
7841         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7842
7843         return sprintf(buf, "0x%04X\n",
7844                 le32_to_cpu(priv->active_rxon.filter_flags));
7845 }
7846
7847 static ssize_t store_filter_flags(struct device *d,
7848                                   struct device_attribute *attr,
7849                                   const char *buf, size_t count)
7850 {
7851         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7852         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7853
7854         mutex_lock(&priv->mutex);
7855         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7856                 /* Cancel any currently running scans... */
7857                 if (iwl3945_scan_cancel_timeout(priv, 100))
7858                         IWL_WARNING("Could not cancel scan.\n");
7859                 else {
7860                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7861                                        "0x%04X\n", filter_flags);
7862                         priv->staging_rxon.filter_flags =
7863                                 cpu_to_le32(filter_flags);
7864                         iwl3945_commit_rxon(priv);
7865                 }
7866         }
7867         mutex_unlock(&priv->mutex);
7868
7869         return count;
7870 }
7871
7872 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7873                    store_filter_flags);
7874
7875 static ssize_t show_tune(struct device *d,
7876                          struct device_attribute *attr, char *buf)
7877 {
7878         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7879
7880         return sprintf(buf, "0x%04X\n",
7881                        (priv->phymode << 8) |
7882                         le16_to_cpu(priv->active_rxon.channel));
7883 }
7884
7885 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv, u8 phymode);
7886
7887 static ssize_t store_tune(struct device *d,
7888                           struct device_attribute *attr,
7889                           const char *buf, size_t count)
7890 {
7891         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7892         char *p = (char *)buf;
7893         u16 tune = simple_strtoul(p, &p, 0);
7894         u8 phymode = (tune >> 8) & 0xff;
7895         u16 channel = tune & 0xff;
7896
7897         IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
7898
7899         mutex_lock(&priv->mutex);
7900         if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
7901             (priv->phymode != phymode)) {
7902                 const struct iwl3945_channel_info *ch_info;
7903
7904                 ch_info = iwl3945_get_channel_info(priv, phymode, channel);
7905                 if (!ch_info) {
7906                         IWL_WARNING("Requested invalid phymode/channel "
7907                                     "combination: %d %d\n", phymode, channel);
7908                         mutex_unlock(&priv->mutex);
7909                         return -EINVAL;
7910                 }
7911
7912                 /* Cancel any currently running scans... */
7913                 if (iwl3945_scan_cancel_timeout(priv, 100))
7914                         IWL_WARNING("Could not cancel scan.\n");
7915                 else {
7916                         IWL_DEBUG_INFO("Committing phymode and "
7917                                        "rxon.channel = %d %d\n",
7918                                        phymode, channel);
7919
7920                         iwl3945_set_rxon_channel(priv, phymode, channel);
7921                         iwl3945_set_flags_for_phymode(priv, phymode);
7922
7923                         iwl3945_set_rate(priv);
7924                         iwl3945_commit_rxon(priv);
7925                 }
7926         }
7927         mutex_unlock(&priv->mutex);
7928
7929         return count;
7930 }
7931
7932 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
7933
7934 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7935
7936 static ssize_t show_measurement(struct device *d,
7937                                 struct device_attribute *attr, char *buf)
7938 {
7939         struct iwl3945_priv *priv = dev_get_drvdata(d);
7940         struct iwl3945_spectrum_notification measure_report;
7941         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7942         u8 *data = (u8 *) & measure_report;
7943         unsigned long flags;
7944
7945         spin_lock_irqsave(&priv->lock, flags);
7946         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7947                 spin_unlock_irqrestore(&priv->lock, flags);
7948                 return 0;
7949         }
7950         memcpy(&measure_report, &priv->measure_report, size);
7951         priv->measurement_status = 0;
7952         spin_unlock_irqrestore(&priv->lock, flags);
7953
7954         while (size && (PAGE_SIZE - len)) {
7955                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7956                                    PAGE_SIZE - len, 1);
7957                 len = strlen(buf);
7958                 if (PAGE_SIZE - len)
7959                         buf[len++] = '\n';
7960
7961                 ofs += 16;
7962                 size -= min(size, 16U);
7963         }
7964
7965         return len;
7966 }
7967
7968 static ssize_t store_measurement(struct device *d,
7969                                  struct device_attribute *attr,
7970                                  const char *buf, size_t count)
7971 {
7972         struct iwl3945_priv *priv = dev_get_drvdata(d);
7973         struct ieee80211_measurement_params params = {
7974                 .channel = le16_to_cpu(priv->active_rxon.channel),
7975                 .start_time = cpu_to_le64(priv->last_tsf),
7976                 .duration = cpu_to_le16(1),
7977         };
7978         u8 type = IWL_MEASURE_BASIC;
7979         u8 buffer[32];
7980         u8 channel;
7981
7982         if (count) {
7983                 char *p = buffer;
7984                 strncpy(buffer, buf, min(sizeof(buffer), count));
7985                 channel = simple_strtoul(p, NULL, 0);
7986                 if (channel)
7987                         params.channel = channel;
7988
7989                 p = buffer;
7990                 while (*p && *p != ' ')
7991                         p++;
7992                 if (*p)
7993                         type = simple_strtoul(p + 1, NULL, 0);
7994         }
7995
7996         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7997                        "channel %d (for '%s')\n", type, params.channel, buf);
7998         iwl3945_get_measurement(priv, &params, type);
7999
8000         return count;
8001 }
8002
8003 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8004                    show_measurement, store_measurement);
8005 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
8006
8007 static ssize_t show_rate(struct device *d,
8008                          struct device_attribute *attr, char *buf)
8009 {
8010         struct iwl3945_priv *priv = dev_get_drvdata(d);
8011         unsigned long flags;
8012         int i;
8013
8014         spin_lock_irqsave(&priv->sta_lock, flags);
8015         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
8016                 i = priv->stations[IWL_AP_ID].current_rate.s.rate;
8017         else
8018                 i = priv->stations[IWL_STA_ID].current_rate.s.rate;
8019         spin_unlock_irqrestore(&priv->sta_lock, flags);
8020
8021         i = iwl3945_rate_index_from_plcp(i);
8022         if (i == -1)
8023                 return sprintf(buf, "0\n");
8024
8025         return sprintf(buf, "%d%s\n",
8026                        (iwl3945_rates[i].ieee >> 1),
8027                        (iwl3945_rates[i].ieee & 0x1) ? ".5" : "");
8028 }
8029
8030 static DEVICE_ATTR(rate, S_IRUSR, show_rate, NULL);
8031
8032 static ssize_t store_retry_rate(struct device *d,
8033                                 struct device_attribute *attr,
8034                                 const char *buf, size_t count)
8035 {
8036         struct iwl3945_priv *priv = dev_get_drvdata(d);
8037
8038         priv->retry_rate = simple_strtoul(buf, NULL, 0);
8039         if (priv->retry_rate <= 0)
8040                 priv->retry_rate = 1;
8041
8042         return count;
8043 }
8044
8045 static ssize_t show_retry_rate(struct device *d,
8046                                struct device_attribute *attr, char *buf)
8047 {
8048         struct iwl3945_priv *priv = dev_get_drvdata(d);
8049         return sprintf(buf, "%d", priv->retry_rate);
8050 }
8051
8052 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8053                    store_retry_rate);
8054
8055 static ssize_t store_power_level(struct device *d,
8056                                  struct device_attribute *attr,
8057                                  const char *buf, size_t count)
8058 {
8059         struct iwl3945_priv *priv = dev_get_drvdata(d);
8060         int rc;
8061         int mode;
8062
8063         mode = simple_strtoul(buf, NULL, 0);
8064         mutex_lock(&priv->mutex);
8065
8066         if (!iwl3945_is_ready(priv)) {
8067                 rc = -EAGAIN;
8068                 goto out;
8069         }
8070
8071         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8072                 mode = IWL_POWER_AC;
8073         else
8074                 mode |= IWL_POWER_ENABLED;
8075
8076         if (mode != priv->power_mode) {
8077                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8078                 if (rc) {
8079                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
8080                         goto out;
8081                 }
8082                 priv->power_mode = mode;
8083         }
8084
8085         rc = count;
8086
8087  out:
8088         mutex_unlock(&priv->mutex);
8089         return rc;
8090 }
8091
8092 #define MAX_WX_STRING 80
8093
8094 /* Values are in microsecond */
8095 static const s32 timeout_duration[] = {
8096         350000,
8097         250000,
8098         75000,
8099         37000,
8100         25000,
8101 };
8102 static const s32 period_duration[] = {
8103         400000,
8104         700000,
8105         1000000,
8106         1000000,
8107         1000000
8108 };
8109
8110 static ssize_t show_power_level(struct device *d,
8111                                 struct device_attribute *attr, char *buf)
8112 {
8113         struct iwl3945_priv *priv = dev_get_drvdata(d);
8114         int level = IWL_POWER_LEVEL(priv->power_mode);
8115         char *p = buf;
8116
8117         p += sprintf(p, "%d ", level);
8118         switch (level) {
8119         case IWL_POWER_MODE_CAM:
8120         case IWL_POWER_AC:
8121                 p += sprintf(p, "(AC)");
8122                 break;
8123         case IWL_POWER_BATTERY:
8124                 p += sprintf(p, "(BATTERY)");
8125                 break;
8126         default:
8127                 p += sprintf(p,
8128                              "(Timeout %dms, Period %dms)",
8129                              timeout_duration[level - 1] / 1000,
8130                              period_duration[level - 1] / 1000);
8131         }
8132
8133         if (!(priv->power_mode & IWL_POWER_ENABLED))
8134                 p += sprintf(p, " OFF\n");
8135         else
8136                 p += sprintf(p, " \n");
8137
8138         return (p - buf + 1);
8139
8140 }
8141
8142 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8143                    store_power_level);
8144
8145 static ssize_t show_channels(struct device *d,
8146                              struct device_attribute *attr, char *buf)
8147 {
8148         struct iwl3945_priv *priv = dev_get_drvdata(d);
8149         int len = 0, i;
8150         struct ieee80211_channel *channels = NULL;
8151         const struct ieee80211_hw_mode *hw_mode = NULL;
8152         int count = 0;
8153
8154         if (!iwl3945_is_ready(priv))
8155                 return -EAGAIN;
8156
8157         hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211G);
8158         if (!hw_mode)
8159                 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211B);
8160         if (hw_mode) {
8161                 channels = hw_mode->channels;
8162                 count = hw_mode->num_channels;
8163         }
8164
8165         len +=
8166             sprintf(&buf[len],
8167                     "Displaying %d channels in 2.4GHz band "
8168                     "(802.11bg):\n", count);
8169
8170         for (i = 0; i < count; i++)
8171                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8172                                channels[i].chan,
8173                                channels[i].power_level,
8174                                channels[i].
8175                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8176                                " (IEEE 802.11h required)" : "",
8177                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8178                                 || (channels[i].
8179                                     flag &
8180                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8181                                ", IBSS",
8182                                channels[i].
8183                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8184                                "active/passive" : "passive only");
8185
8186         hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211A);
8187         if (hw_mode) {
8188                 channels = hw_mode->channels;
8189                 count = hw_mode->num_channels;
8190         } else {
8191                 channels = NULL;
8192                 count = 0;
8193         }
8194
8195         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8196                        "(802.11a):\n", count);
8197
8198         for (i = 0; i < count; i++)
8199                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8200                                channels[i].chan,
8201                                channels[i].power_level,
8202                                channels[i].
8203                                flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8204                                " (IEEE 802.11h required)" : "",
8205                                (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8206                                 || (channels[i].
8207                                     flag &
8208                                     IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8209                                ", IBSS",
8210                                channels[i].
8211                                flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8212                                "active/passive" : "passive only");
8213
8214         return len;
8215 }
8216
8217 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8218
8219 static ssize_t show_statistics(struct device *d,
8220                                struct device_attribute *attr, char *buf)
8221 {
8222         struct iwl3945_priv *priv = dev_get_drvdata(d);
8223         u32 size = sizeof(struct iwl3945_notif_statistics);
8224         u32 len = 0, ofs = 0;
8225         u8 *data = (u8 *) & priv->statistics;
8226         int rc = 0;
8227
8228         if (!iwl3945_is_alive(priv))
8229                 return -EAGAIN;
8230
8231         mutex_lock(&priv->mutex);
8232         rc = iwl3945_send_statistics_request(priv);
8233         mutex_unlock(&priv->mutex);
8234
8235         if (rc) {
8236                 len = sprintf(buf,
8237                               "Error sending statistics request: 0x%08X\n", rc);
8238                 return len;
8239         }
8240
8241         while (size && (PAGE_SIZE - len)) {
8242                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8243                                    PAGE_SIZE - len, 1);
8244                 len = strlen(buf);
8245                 if (PAGE_SIZE - len)
8246                         buf[len++] = '\n';
8247
8248                 ofs += 16;
8249                 size -= min(size, 16U);
8250         }
8251
8252         return len;
8253 }
8254
8255 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8256
8257 static ssize_t show_antenna(struct device *d,
8258                             struct device_attribute *attr, char *buf)
8259 {
8260         struct iwl3945_priv *priv = dev_get_drvdata(d);
8261
8262         if (!iwl3945_is_alive(priv))
8263                 return -EAGAIN;
8264
8265         return sprintf(buf, "%d\n", priv->antenna);
8266 }
8267
8268 static ssize_t store_antenna(struct device *d,
8269                              struct device_attribute *attr,
8270                              const char *buf, size_t count)
8271 {
8272         int ant;
8273         struct iwl3945_priv *priv = dev_get_drvdata(d);
8274
8275         if (count == 0)
8276                 return 0;
8277
8278         if (sscanf(buf, "%1i", &ant) != 1) {
8279                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8280                 return count;
8281         }
8282
8283         if ((ant >= 0) && (ant <= 2)) {
8284                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8285                 priv->antenna = (enum iwl3945_antenna)ant;
8286         } else
8287                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8288
8289
8290         return count;
8291 }
8292
8293 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8294
8295 static ssize_t show_status(struct device *d,
8296                            struct device_attribute *attr, char *buf)
8297 {
8298         struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
8299         if (!iwl3945_is_alive(priv))
8300                 return -EAGAIN;
8301         return sprintf(buf, "0x%08x\n", (int)priv->status);
8302 }
8303
8304 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8305
8306 static ssize_t dump_error_log(struct device *d,
8307                               struct device_attribute *attr,
8308                               const char *buf, size_t count)
8309 {
8310         char *p = (char *)buf;
8311
8312         if (p[0] == '1')
8313                 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
8314
8315         return strnlen(buf, count);
8316 }
8317
8318 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8319
8320 static ssize_t dump_event_log(struct device *d,
8321                               struct device_attribute *attr,
8322                               const char *buf, size_t count)
8323 {
8324         char *p = (char *)buf;
8325
8326         if (p[0] == '1')
8327                 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
8328
8329         return strnlen(buf, count);
8330 }
8331
8332 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8333
8334 /*****************************************************************************
8335  *
8336  * driver setup and teardown
8337  *
8338  *****************************************************************************/
8339
8340 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
8341 {
8342         priv->workqueue = create_workqueue(DRV_NAME);
8343
8344         init_waitqueue_head(&priv->wait_command_queue);
8345
8346         INIT_WORK(&priv->up, iwl3945_bg_up);
8347         INIT_WORK(&priv->restart, iwl3945_bg_restart);
8348         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
8349         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
8350         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
8351         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
8352         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
8353         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
8354         INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
8355         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
8356         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
8357         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
8358
8359         iwl3945_hw_setup_deferred_work(priv);
8360
8361         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8362                      iwl3945_irq_tasklet, (unsigned long)priv);
8363 }
8364
8365 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
8366 {
8367         iwl3945_hw_cancel_deferred_work(priv);
8368
8369         cancel_delayed_work_sync(&priv->init_alive_start);
8370         cancel_delayed_work(&priv->scan_check);
8371         cancel_delayed_work(&priv->alive_start);
8372         cancel_delayed_work(&priv->post_associate);
8373         cancel_work_sync(&priv->beacon_update);
8374 }
8375
8376 static struct attribute *iwl3945_sysfs_entries[] = {
8377         &dev_attr_antenna.attr,
8378         &dev_attr_channels.attr,
8379         &dev_attr_dump_errors.attr,
8380         &dev_attr_dump_events.attr,
8381         &dev_attr_flags.attr,
8382         &dev_attr_filter_flags.attr,
8383 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
8384         &dev_attr_measurement.attr,
8385 #endif
8386         &dev_attr_power_level.attr,
8387         &dev_attr_rate.attr,
8388         &dev_attr_retry_rate.attr,
8389         &dev_attr_rf_kill.attr,
8390         &dev_attr_rs_window.attr,
8391         &dev_attr_statistics.attr,
8392         &dev_attr_status.attr,
8393         &dev_attr_temperature.attr,
8394         &dev_attr_tune.attr,
8395         &dev_attr_tx_power.attr,
8396
8397         NULL
8398 };
8399
8400 static struct attribute_group iwl3945_attribute_group = {
8401         .name = NULL,           /* put in device directory */
8402         .attrs = iwl3945_sysfs_entries,
8403 };
8404
8405 static struct ieee80211_ops iwl3945_hw_ops = {
8406         .tx = iwl3945_mac_tx,
8407         .start = iwl3945_mac_start,
8408         .stop = iwl3945_mac_stop,
8409         .add_interface = iwl3945_mac_add_interface,
8410         .remove_interface = iwl3945_mac_remove_interface,
8411         .config = iwl3945_mac_config,
8412         .config_interface = iwl3945_mac_config_interface,
8413         .configure_filter = iwl3945_configure_filter,
8414         .set_key = iwl3945_mac_set_key,
8415         .get_stats = iwl3945_mac_get_stats,
8416         .get_tx_stats = iwl3945_mac_get_tx_stats,
8417         .conf_tx = iwl3945_mac_conf_tx,
8418         .get_tsf = iwl3945_mac_get_tsf,
8419         .reset_tsf = iwl3945_mac_reset_tsf,
8420         .beacon_update = iwl3945_mac_beacon_update,
8421         .hw_scan = iwl3945_mac_hw_scan
8422 };
8423
8424 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8425 {
8426         int err = 0;
8427         u32 pci_id;
8428         struct iwl3945_priv *priv;
8429         struct ieee80211_hw *hw;
8430         int i;
8431
8432         /* Disabling hardware scan means that mac80211 will perform scans
8433          * "the hard way", rather than using device's scan. */
8434         if (iwl3945_param_disable_hw_scan) {
8435                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8436                 iwl3945_hw_ops.hw_scan = NULL;
8437         }
8438
8439         if ((iwl3945_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8440             (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8441                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8442                           IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8443                 err = -EINVAL;
8444                 goto out;
8445         }
8446
8447         /* mac80211 allocates memory for this device instance, including
8448          *   space for this driver's private structure */
8449         hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
8450         if (hw == NULL) {
8451                 IWL_ERROR("Can not allocate network device\n");
8452                 err = -ENOMEM;
8453                 goto out;
8454         }
8455         SET_IEEE80211_DEV(hw, &pdev->dev);
8456
8457         hw->rate_control_algorithm = "iwl-3945-rs";
8458
8459         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8460         priv = hw->priv;
8461         priv->hw = hw;
8462
8463         priv->pci_dev = pdev;
8464
8465         /* Select antenna (may be helpful if only one antenna is connected) */
8466         priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
8467 #ifdef CONFIG_IWL3945_DEBUG
8468         iwl3945_debug_level = iwl3945_param_debug;
8469         atomic_set(&priv->restrict_refcnt, 0);
8470 #endif
8471         priv->retry_rate = 1;
8472
8473         priv->ibss_beacon = NULL;
8474
8475         /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8476          *   the range of signal quality values that we'll provide.
8477          * Negative values for level/noise indicate that we'll provide dBm.
8478          * For WE, at least, non-0 values here *enable* display of values
8479          *   in app (iwconfig). */
8480         hw->max_rssi = -20;     /* signal level, negative indicates dBm */
8481         hw->max_noise = -20;    /* noise level, negative indicates dBm */
8482         hw->max_signal = 100;   /* link quality indication (%) */
8483
8484         /* Tell mac80211 our Tx characteristics */
8485         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8486
8487         /* 4 EDCA QOS priorities */
8488         hw->queues = 4;
8489
8490         spin_lock_init(&priv->lock);
8491         spin_lock_init(&priv->power_data.lock);
8492         spin_lock_init(&priv->sta_lock);
8493         spin_lock_init(&priv->hcmd_lock);
8494
8495         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8496                 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8497
8498         INIT_LIST_HEAD(&priv->free_frames);
8499
8500         mutex_init(&priv->mutex);
8501         if (pci_enable_device(pdev)) {
8502                 err = -ENODEV;
8503                 goto out_ieee80211_free_hw;
8504         }
8505
8506         pci_set_master(pdev);
8507
8508         /* Clear the driver's (not device's) station table */
8509         iwl3945_clear_stations_table(priv);
8510
8511         priv->data_retry_limit = -1;
8512         priv->ieee_channels = NULL;
8513         priv->ieee_rates = NULL;
8514         priv->phymode = -1;
8515
8516         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8517         if (!err)
8518                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8519         if (err) {
8520                 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8521                 goto out_pci_disable_device;
8522         }
8523
8524         pci_set_drvdata(pdev, priv);
8525         err = pci_request_regions(pdev, DRV_NAME);
8526         if (err)
8527                 goto out_pci_disable_device;
8528
8529         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8530          * PCI Tx retries from interfering with C3 CPU state */
8531         pci_write_config_byte(pdev, 0x41, 0x00);
8532
8533         priv->hw_base = pci_iomap(pdev, 0, 0);
8534         if (!priv->hw_base) {
8535                 err = -ENODEV;
8536                 goto out_pci_release_regions;
8537         }
8538
8539         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8540                         (unsigned long long) pci_resource_len(pdev, 0));
8541         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8542
8543         /* Initialize module parameter values here */
8544
8545         /* Disable radio (SW RF KILL) via parameter when loading driver */
8546         if (iwl3945_param_disable) {
8547                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8548                 IWL_DEBUG_INFO("Radio disabled.\n");
8549         }
8550
8551         priv->iw_mode = IEEE80211_IF_TYPE_STA;
8552
8553         pci_id =
8554             (priv->pci_dev->device << 16) | priv->pci_dev->subsystem_device;
8555
8556         switch (pci_id) {
8557         case 0x42221005:        /* 0x4222 0x8086 0x1005 is BG SKU */
8558         case 0x42221034:        /* 0x4222 0x8086 0x1034 is BG SKU */
8559         case 0x42271014:        /* 0x4227 0x8086 0x1014 is BG SKU */
8560         case 0x42221044:        /* 0x4222 0x8086 0x1044 is BG SKU */
8561                 priv->is_abg = 0;
8562                 break;
8563
8564         /*
8565          * Rest are assumed ABG SKU -- if this is not the
8566          * case then the card will get the wrong 'Detected'
8567          * line in the kernel log however the code that
8568          * initializes the GEO table will detect no A-band
8569          * channels and remove the is_abg mask.
8570          */
8571         default:
8572                 priv->is_abg = 1;
8573                 break;
8574         }
8575
8576         printk(KERN_INFO DRV_NAME
8577                ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n",
8578                priv->is_abg ? "A" : "");
8579
8580         /* Device-specific setup */
8581         if (iwl3945_hw_set_hw_setting(priv)) {
8582                 IWL_ERROR("failed to set hw settings\n");
8583                 mutex_unlock(&priv->mutex);
8584                 goto out_iounmap;
8585         }
8586
8587 #ifdef CONFIG_IWL3945_QOS
8588         if (iwl3945_param_qos_enable)
8589                 priv->qos_data.qos_enable = 1;
8590
8591         iwl3945_reset_qos(priv);
8592
8593         priv->qos_data.qos_active = 0;
8594         priv->qos_data.qos_cap.val = 0;
8595 #endif /* CONFIG_IWL3945_QOS */
8596
8597         iwl3945_set_rxon_channel(priv, MODE_IEEE80211G, 6);
8598         iwl3945_setup_deferred_work(priv);
8599         iwl3945_setup_rx_handlers(priv);
8600
8601         priv->rates_mask = IWL_RATES_MASK;
8602         /* If power management is turned on, default to AC mode */
8603         priv->power_mode = IWL_POWER_AC;
8604         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8605
8606         iwl3945_disable_interrupts(priv);
8607
8608         pci_enable_msi(pdev);
8609
8610         err = request_irq(pdev->irq, iwl3945_isr, IRQF_SHARED, DRV_NAME, priv);
8611         if (err) {
8612                 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
8613                 goto out_disable_msi;
8614         }
8615
8616         mutex_lock(&priv->mutex);
8617
8618         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8619         if (err) {
8620                 IWL_ERROR("failed to create sysfs device attributes\n");
8621                 mutex_unlock(&priv->mutex);
8622                 goto out_release_irq;
8623         }
8624
8625         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
8626          * ucode filename and max sizes are card-specific. */
8627         err = iwl3945_read_ucode(priv);
8628         if (err) {
8629                 IWL_ERROR("Could not read microcode: %d\n", err);
8630                 mutex_unlock(&priv->mutex);
8631                 goto out_pci_alloc;
8632         }
8633
8634         mutex_unlock(&priv->mutex);
8635
8636         IWL_DEBUG_INFO("Queueing UP work.\n");
8637
8638         queue_work(priv->workqueue, &priv->up);
8639
8640         return 0;
8641
8642  out_pci_alloc:
8643         iwl3945_dealloc_ucode_pci(priv);
8644
8645         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8646
8647  out_release_irq:
8648         free_irq(pdev->irq, priv);
8649
8650  out_disable_msi:
8651         pci_disable_msi(pdev);
8652         destroy_workqueue(priv->workqueue);
8653         priv->workqueue = NULL;
8654         iwl3945_unset_hw_setting(priv);
8655
8656  out_iounmap:
8657         pci_iounmap(pdev, priv->hw_base);
8658  out_pci_release_regions:
8659         pci_release_regions(pdev);
8660  out_pci_disable_device:
8661         pci_disable_device(pdev);
8662         pci_set_drvdata(pdev, NULL);
8663  out_ieee80211_free_hw:
8664         ieee80211_free_hw(priv->hw);
8665  out:
8666         return err;
8667 }
8668
8669 static void iwl3945_pci_remove(struct pci_dev *pdev)
8670 {
8671         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8672         struct list_head *p, *q;
8673         int i;
8674
8675         if (!priv)
8676                 return;
8677
8678         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8679
8680         set_bit(STATUS_EXIT_PENDING, &priv->status);
8681
8682         iwl3945_down(priv);
8683
8684         /* Free MAC hash list for ADHOC */
8685         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8686                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8687                         list_del(p);
8688                         kfree(list_entry(p, struct iwl3945_ibss_seq, list));
8689                 }
8690         }
8691
8692         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8693
8694         iwl3945_dealloc_ucode_pci(priv);
8695
8696         if (priv->rxq.bd)
8697                 iwl3945_rx_queue_free(priv, &priv->rxq);
8698         iwl3945_hw_txq_ctx_free(priv);
8699
8700         iwl3945_unset_hw_setting(priv);
8701         iwl3945_clear_stations_table(priv);
8702
8703         if (priv->mac80211_registered) {
8704                 ieee80211_unregister_hw(priv->hw);
8705                 iwl3945_rate_control_unregister(priv->hw);
8706         }
8707
8708         /*netif_stop_queue(dev); */
8709         flush_workqueue(priv->workqueue);
8710
8711         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8712          * priv->workqueue... so we can't take down the workqueue
8713          * until now... */
8714         destroy_workqueue(priv->workqueue);
8715         priv->workqueue = NULL;
8716
8717         free_irq(pdev->irq, priv);
8718         pci_disable_msi(pdev);
8719         pci_iounmap(pdev, priv->hw_base);
8720         pci_release_regions(pdev);
8721         pci_disable_device(pdev);
8722         pci_set_drvdata(pdev, NULL);
8723
8724         kfree(priv->channel_info);
8725
8726         kfree(priv->ieee_channels);
8727         kfree(priv->ieee_rates);
8728
8729         if (priv->ibss_beacon)
8730                 dev_kfree_skb(priv->ibss_beacon);
8731
8732         ieee80211_free_hw(priv->hw);
8733 }
8734
8735 #ifdef CONFIG_PM
8736
8737 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8738 {
8739         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8740
8741         set_bit(STATUS_IN_SUSPEND, &priv->status);
8742
8743         /* Take down the device; powers it off, etc. */
8744         iwl3945_down(priv);
8745
8746         if (priv->mac80211_registered)
8747                 ieee80211_stop_queues(priv->hw);
8748
8749         pci_save_state(pdev);
8750         pci_disable_device(pdev);
8751         pci_set_power_state(pdev, PCI_D3hot);
8752
8753         return 0;
8754 }
8755
8756 static void iwl3945_resume(struct iwl3945_priv *priv)
8757 {
8758         unsigned long flags;
8759
8760         /* The following it a temporary work around due to the
8761          * suspend / resume not fully initializing the NIC correctly.
8762          * Without all of the following, resume will not attempt to take
8763          * down the NIC (it shouldn't really need to) and will just try
8764          * and bring the NIC back up.  However that fails during the
8765          * ucode verification process.  This then causes iwl3945_down to be
8766          * called *after* iwl3945_hw_nic_init() has succeeded -- which
8767          * then lets the next init sequence succeed.  So, we've
8768          * replicated all of that NIC init code here... */
8769
8770         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
8771
8772         iwl3945_hw_nic_init(priv);
8773
8774         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8775         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
8776                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
8777         iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
8778         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8779         iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8780
8781         /* tell the device to stop sending interrupts */
8782         iwl3945_disable_interrupts(priv);
8783
8784         spin_lock_irqsave(&priv->lock, flags);
8785         iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
8786
8787         if (!iwl3945_grab_nic_access(priv)) {
8788                 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
8789                                          APMG_CLK_VAL_DMA_CLK_RQT);
8790                 iwl3945_release_nic_access(priv);
8791         }
8792         spin_unlock_irqrestore(&priv->lock, flags);
8793
8794         udelay(5);
8795
8796         iwl3945_hw_nic_reset(priv);
8797
8798         /* Bring the device back up */
8799         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8800         queue_work(priv->workqueue, &priv->up);
8801 }
8802
8803 static int iwl3945_pci_resume(struct pci_dev *pdev)
8804 {
8805         struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8806         int err;
8807
8808         printk(KERN_INFO "Coming out of suspend...\n");
8809
8810         pci_set_power_state(pdev, PCI_D0);
8811         err = pci_enable_device(pdev);
8812         pci_restore_state(pdev);
8813
8814         /*
8815          * Suspend/Resume resets the PCI configuration space, so we have to
8816          * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
8817          * from interfering with C3 CPU state. pci_restore_state won't help
8818          * here since it only restores the first 64 bytes pci config header.
8819          */
8820         pci_write_config_byte(pdev, 0x41, 0x00);
8821
8822         iwl3945_resume(priv);
8823
8824         return 0;
8825 }
8826
8827 #endif /* CONFIG_PM */
8828
8829 /*****************************************************************************
8830  *
8831  * driver and module entry point
8832  *
8833  *****************************************************************************/
8834
8835 static struct pci_driver iwl3945_driver = {
8836         .name = DRV_NAME,
8837         .id_table = iwl3945_hw_card_ids,
8838         .probe = iwl3945_pci_probe,
8839         .remove = __devexit_p(iwl3945_pci_remove),
8840 #ifdef CONFIG_PM
8841         .suspend = iwl3945_pci_suspend,
8842         .resume = iwl3945_pci_resume,
8843 #endif
8844 };
8845
8846 static int __init iwl3945_init(void)
8847 {
8848
8849         int ret;
8850         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8851         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8852         ret = pci_register_driver(&iwl3945_driver);
8853         if (ret) {
8854                 IWL_ERROR("Unable to initialize PCI module\n");
8855                 return ret;
8856         }
8857 #ifdef CONFIG_IWL3945_DEBUG
8858         ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8859         if (ret) {
8860                 IWL_ERROR("Unable to create driver sysfs file\n");
8861                 pci_unregister_driver(&iwl3945_driver);
8862                 return ret;
8863         }
8864 #endif
8865
8866         return ret;
8867 }
8868
8869 static void __exit iwl3945_exit(void)
8870 {
8871 #ifdef CONFIG_IWL3945_DEBUG
8872         driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8873 #endif
8874         pci_unregister_driver(&iwl3945_driver);
8875 }
8876
8877 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8878 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8879 module_param_named(disable, iwl3945_param_disable, int, 0444);
8880 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8881 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8882 MODULE_PARM_DESC(hwcrypto,
8883                  "using hardware crypto engine (default 0 [software])\n");
8884 module_param_named(debug, iwl3945_param_debug, int, 0444);
8885 MODULE_PARM_DESC(debug, "debug output mask");
8886 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8887 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8888
8889 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8890 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8891
8892 /* QoS */
8893 module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
8894 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8895
8896 module_exit(iwl3945_exit);
8897 module_init(iwl3945_init);