SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl3945-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 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  *  Intel Linux Wireless <ilw@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/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/ieee80211_radiotap.h>
  44 #include <net/lib80211.h>
  45 #include <net/mac80211.h>
  46
  47 #include <asm/div64.h>
  48
  49 #define DRV_NAME        "iwl3945"
  50
  51 #include "iwl-fh.h"
  52 #include "iwl-3945-fh.h"
  53 #include "iwl-commands.h"
  54 #include "iwl-3945.h"
  55 #include "iwl-helpers.h"
  56 #include "iwl-core.h"
  57 #include "iwl-dev.h"
  58
  59 static int iwl3945_tx_queue_update_write_ptr(struct iwl_priv *priv,
  60                                   struct iwl_tx_queue *txq);
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  */
  65
  66 #define DRV_DESCRIPTION \
  67 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  68
  69 #ifdef CONFIG_IWL3945_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define IWL39_VERSION "1.2.26k" VD VS
  82 #define DRV_COPYRIGHT   "Copyright(c) 2003-2008 Intel Corporation"
  83 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  84 #define DRV_VERSION     IWL39_VERSION
  85
  86
  87 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  88 MODULE_VERSION(DRV_VERSION);
  89 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  90 MODULE_LICENSE("GPL");
  91
  92  /* module parameters */
  93 struct iwl_mod_params iwl3945_mod_params = {
  94         .num_of_queues = IWL39_MAX_NUM_QUEUES,
  95         /* the rest are 0 by default */
  96 };
  97
  98 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
  99  * DMA services
 100  *
 101  * Theory of operation
 102  *
 103  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 104  * of buffer descriptors, each of which points to one or more data buffers for
 105  * the device to read from or fill.  Driver and device exchange status of each
 106  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 107  * entries in each circular buffer, to protect against confusing empty and full
 108  * queue states.
 109  *
 110  * The device reads or writes the data in the queues via the device's several
 111  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 112  *
 113  * For Tx queue, there are low mark and high mark limits. If, after queuing
 114  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 115  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 116  * Tx queue resumed.
 117  *
 118  * The 3945 operates with six queues:  One receive queue, one transmit queue
 119  * (#4) for sending commands to the device firmware, and four transmit queues
 120  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 121  ***************************************************/
 122
 123 int iwl3945_x2_queue_used(const struct iwl_queue *q, int i)
 124 {
 125         return q->write_ptr > q->read_ptr ?
 126                 (i >= q->read_ptr && i < q->write_ptr) :
 127                 !(i < q->read_ptr && i >= q->write_ptr);
 128 }
 129
 130 /**
 131  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 132  */
 133 static int iwl3945_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
 134                           int count, int slots_num, u32 id)
 135 {
 136         q->n_bd = count;
 137         q->n_window = slots_num;
 138         q->id = id;
 139
 140         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 141          * and iwl_queue_dec_wrap are broken. */
 142         BUG_ON(!is_power_of_2(count));
 143
 144         /* slots_num must be power-of-two size, otherwise
 145          * get_cmd_index is broken. */
 146         BUG_ON(!is_power_of_2(slots_num));
 147
 148         q->low_mark = q->n_window / 4;
 149         if (q->low_mark < 4)
 150                 q->low_mark = 4;
 151
 152         q->high_mark = q->n_window / 8;
 153         if (q->high_mark < 2)
 154                 q->high_mark = 2;
 155
 156         q->write_ptr = q->read_ptr = 0;
 157
 158         return 0;
 159 }
 160
 161 /**
 162  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 163  */
 164 static int iwl3945_tx_queue_alloc(struct iwl_priv *priv,
 165                               struct iwl_tx_queue *txq, u32 id)
 166 {
 167         struct pci_dev *dev = priv->pci_dev;
 168
 169         /* Driver private data, only for Tx (not command) queues,
 170          * not shared with device. */
 171         if (id != IWL_CMD_QUEUE_NUM) {
 172                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 173                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 174                 if (!txq->txb) {
 175                         IWL_ERR(priv, "kmalloc for auxiliary BD "
 176                                   "structures failed\n");
 177                         goto error;
 178                 }
 179         } else
 180                 txq->txb = NULL;
 181
 182         /* Circular buffer of transmit frame descriptors (TFDs),
 183          * shared with device */
 184         txq->tfds39 = pci_alloc_consistent(dev,
 185                         sizeof(txq->tfds39[0]) * TFD_QUEUE_SIZE_MAX,
 186                         &txq->q.dma_addr);
 187
 188         if (!txq->tfds39) {
 189                 IWL_ERR(priv, "pci_alloc_consistent(%zd) failed\n",
 190                           sizeof(txq->tfds39[0]) * TFD_QUEUE_SIZE_MAX);
 191                 goto error;
 192         }
 193         txq->q.id = id;
 194
 195         return 0;
 196
 197  error:
 198         kfree(txq->txb);
 199         txq->txb = NULL;
 200
 201         return -ENOMEM;
 202 }
 203
 204 /**
 205  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 206  */
 207 int iwl3945_tx_queue_init(struct iwl_priv *priv,
 208                       struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
 209 {
 210         int len, i;
 211         int rc = 0;
 212
 213         /*
 214          * Alloc buffer array for commands (Tx or other types of commands).
 215          * For the command queue (#4), allocate command space + one big
 216          * command for scan, since scan command is very huge; the system will
 217          * not have two scans at the same time, so only one is needed.
 218          * For data Tx queues (all other queues), no super-size command
 219          * space is needed.
 220          */
 221         len = sizeof(struct iwl_cmd);
 222         for (i = 0; i <= slots_num; i++) {
 223                 if (i == slots_num) {
 224                         if (txq_id == IWL_CMD_QUEUE_NUM)
 225                                 len += IWL_MAX_SCAN_SIZE;
 226                         else
 227                                 continue;
 228                 }
 229
 230                 txq->cmd[i] = kmalloc(len, GFP_KERNEL);
 231                 if (!txq->cmd[i])
 232                         goto err;
 233         }
 234
 235         /* Alloc driver data array and TFD circular buffer */
 236         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 237         if (rc)
 238                 goto err;
 239
 240         txq->need_update = 0;
 241
 242         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 243          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 244         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 245
 246         /* Initialize queue high/low-water, head/tail indexes */
 247         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 248
 249         /* Tell device where to find queue, enable DMA channel. */
 250         iwl3945_hw_tx_queue_init(priv, txq);
 251
 252         return 0;
 253 err:
 254         for (i = 0; i < slots_num; i++) {
 255                 kfree(txq->cmd[i]);
 256                 txq->cmd[i] = NULL;
 257         }
 258
 259         if (txq_id == IWL_CMD_QUEUE_NUM) {
 260                 kfree(txq->cmd[slots_num]);
 261                 txq->cmd[slots_num] = NULL;
 262         }
 263         return -ENOMEM;
 264 }
 265
 266 /**
 267  * iwl3945_tx_queue_free - Deallocate DMA queue.
 268  * @txq: Transmit queue to deallocate.
 269  *
 270  * Empty queue by removing and destroying all BD's.
 271  * Free all buffers.
 272  * 0-fill, but do not free "txq" descriptor structure.
 273  */
 274 void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 275 {
 276         struct iwl_queue *q = &txq->q;
 277         struct pci_dev *dev = priv->pci_dev;
 278         int len, i;
 279
 280         if (q->n_bd == 0)
 281                 return;
 282
 283         /* first, empty all BD's */
 284         for (; q->write_ptr != q->read_ptr;
 285              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 286                 iwl3945_hw_txq_free_tfd(priv, txq);
 287
 288         len = sizeof(struct iwl_cmd) * q->n_window;
 289         if (q->id == IWL_CMD_QUEUE_NUM)
 290                 len += IWL_MAX_SCAN_SIZE;
 291
 292         /* De-alloc array of command/tx buffers */
 293         for (i = 0; i < TFD_TX_CMD_SLOTS; i++)
 294                 kfree(txq->cmd[i]);
 295
 296         /* De-alloc circular buffer of TFDs */
 297         if (txq->q.n_bd)
 298                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd) *
 299                                     txq->q.n_bd, txq->tfds39, txq->q.dma_addr);
 300
 301         /* De-alloc array of per-TFD driver data */
 302         kfree(txq->txb);
 303         txq->txb = NULL;
 304
 305         /* 0-fill queue descriptor structure */
 306         memset(txq, 0, sizeof(*txq));
 307 }
 308
 309 /*************** STATION TABLE MANAGEMENT ****
 310  * mac80211 should be examined to determine if sta_info is duplicating
 311  * the functionality provided here
 312  */
 313
 314 /**************************************************************/
 315 #if 0 /* temporary disable till we add real remove station */
 316 /**
 317  * iwl3945_remove_station - Remove driver's knowledge of station.
 318  *
 319  * NOTE:  This does not remove station from device's station table.
 320  */
 321 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 322 {
 323         int index = IWL_INVALID_STATION;
 324         int i;
 325         unsigned long flags;
 326
 327         spin_lock_irqsave(&priv->sta_lock, flags);
 328
 329         if (is_ap)
 330                 index = IWL_AP_ID;
 331         else if (is_broadcast_ether_addr(addr))
 332                 index = priv->hw_params.bcast_sta_id;
 333         else
 334                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
 335                         if (priv->stations_39[i].used &&
 336                             !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 337                                                 addr)) {
 338                                 index = i;
 339                                 break;
 340                         }
 341
 342         if (unlikely(index == IWL_INVALID_STATION))
 343                 goto out;
 344
 345         if (priv->stations_39[index].used) {
 346                 priv->stations_39[index].used = 0;
 347                 priv->num_stations--;
 348         }
 349
 350         BUG_ON(priv->num_stations < 0);
 351
 352 out:
 353         spin_unlock_irqrestore(&priv->sta_lock, flags);
 354         return 0;
 355 }
 356 #endif
 357
 358 /**
 359  * iwl3945_clear_stations_table - Clear the driver's station table
 360  *
 361  * NOTE:  This does not clear or otherwise alter the device's station table.
 362  */
 363 static void iwl3945_clear_stations_table(struct iwl_priv *priv)
 364 {
 365         unsigned long flags;
 366
 367         spin_lock_irqsave(&priv->sta_lock, flags);
 368
 369         priv->num_stations = 0;
 370         memset(priv->stations_39, 0, sizeof(priv->stations_39));
 371
 372         spin_unlock_irqrestore(&priv->sta_lock, flags);
 373 }
 374
 375 /**
 376  * iwl3945_add_station - Add station to station tables in driver and device
 377  */
 378 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
 379 {
 380         int i;
 381         int index = IWL_INVALID_STATION;
 382         struct iwl3945_station_entry *station;
 383         unsigned long flags_spin;
 384         u8 rate;
 385
 386         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 387         if (is_ap)
 388                 index = IWL_AP_ID;
 389         else if (is_broadcast_ether_addr(addr))
 390                 index = priv->hw_params.bcast_sta_id;
 391         else
 392                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
 393                         if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 394                                                 addr)) {
 395                                 index = i;
 396                                 break;
 397                         }
 398
 399                         if (!priv->stations_39[i].used &&
 400                             index == IWL_INVALID_STATION)
 401                                 index = i;
 402                 }
 403
 404         /* These two conditions has the same outcome but keep them separate
 405           since they have different meaning */
 406         if (unlikely(index == IWL_INVALID_STATION)) {
 407                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 408                 return index;
 409         }
 410
 411         if (priv->stations_39[index].used &&
 412            !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
 413                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 414                 return index;
 415         }
 416
 417         IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
 418         station = &priv->stations_39[index];
 419         station->used = 1;
 420         priv->num_stations++;
 421
 422         /* Set up the REPLY_ADD_STA command to send to device */
 423         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 424         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 425         station->sta.mode = 0;
 426         station->sta.sta.sta_id = index;
 427         station->sta.station_flags = 0;
 428
 429         if (priv->band == IEEE80211_BAND_5GHZ)
 430                 rate = IWL_RATE_6M_PLCP;
 431         else
 432                 rate =  IWL_RATE_1M_PLCP;
 433
 434         /* Turn on both antennas for the station... */
 435         station->sta.rate_n_flags =
 436                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 437
 438         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 439
 440         /* Add station to device's station table */
 441         iwl3945_send_add_station(priv, &station->sta, flags);
 442         return index;
 443
 444 }
 445
 446
 447 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 448
 449 #define IWL_CMD(x) case x: return #x
 450 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 451
 452 /**
 453  * iwl3945_enqueue_hcmd - enqueue a uCode command
 454  * @priv: device private data point
 455  * @cmd: a point to the ucode command structure
 456  *
 457  * The function returns < 0 values to indicate the operation is
 458  * failed. On success, it turns the index (> 0) of command in the
 459  * command queue.
 460  */
 461 static int iwl3945_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 462 {
 463         struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 464         struct iwl_queue *q = &txq->q;
 465         struct iwl3945_tfd *tfd;
 466         struct iwl_cmd *out_cmd;
 467         u32 idx;
 468         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 469         dma_addr_t phys_addr;
 470         int pad;
 471         int ret, len;
 472         unsigned long flags;
 473
 474         /* If any of the command structures end up being larger than
 475          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 476          * we will need to increase the size of the TFD entries */
 477         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 478                !(cmd->meta.flags & CMD_SIZE_HUGE));
 479
 480
 481         if (iwl_is_rfkill(priv)) {
 482                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 483                 return -EIO;
 484         }
 485
 486         if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 487                 IWL_ERR(priv, "No space for Tx\n");
 488                 return -ENOSPC;
 489         }
 490
 491         spin_lock_irqsave(&priv->hcmd_lock, flags);
 492
 493         tfd = &txq->tfds39[q->write_ptr];
 494         memset(tfd, 0, sizeof(*tfd));
 495
 496         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 497         out_cmd = txq->cmd[idx];
 498
 499         out_cmd->hdr.cmd = cmd->id;
 500         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 501         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 502
 503         /* At this point, the out_cmd now has all of the incoming cmd
 504          * information */
 505
 506         out_cmd->hdr.flags = 0;
 507         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 508                         INDEX_TO_SEQ(q->write_ptr));
 509         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 510                 out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
 511
 512         len = (idx == TFD_CMD_SLOTS) ?
 513                         IWL_MAX_SCAN_SIZE : sizeof(struct iwl_cmd);
 514
 515         phys_addr = pci_map_single(priv->pci_dev, out_cmd,
 516                                         len, PCI_DMA_TODEVICE);
 517         pci_unmap_addr_set(&out_cmd->meta, mapping, phys_addr);
 518         pci_unmap_len_set(&out_cmd->meta, len, len);
 519         phys_addr += offsetof(struct iwl_cmd, hdr);
 520
 521         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 522
 523         pad = U32_PAD(cmd->len);
 524         tfd->control_flags |= cpu_to_le32(TFD_CTL_PAD_SET(pad));
 525
 526         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 527                      "%d bytes at %d[%d]:%d\n",
 528                      get_cmd_string(out_cmd->hdr.cmd),
 529                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 530                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 531
 532         txq->need_update = 1;
 533
 534         /* Increment and update queue's write index */
 535         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 536         ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
 537
 538         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 539         return ret ? ret : idx;
 540 }
 541
 542 static int iwl3945_send_cmd_async(struct iwl_priv *priv,
 543                                   struct iwl_host_cmd *cmd)
 544 {
 545         int ret;
 546
 547         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 548
 549         /* An asynchronous command can not expect an SKB to be set. */
 550         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 551
 552         /* An asynchronous command MUST have a callback. */
 553         BUG_ON(!cmd->meta.u.callback);
 554
 555         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 556                 return -EBUSY;
 557
 558         ret = iwl3945_enqueue_hcmd(priv, cmd);
 559         if (ret < 0) {
 560                 IWL_ERR(priv,
 561                         "Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 562                         get_cmd_string(cmd->id), ret);
 563                 return ret;
 564         }
 565         return 0;
 566 }
 567
 568 static int iwl3945_send_cmd_sync(struct iwl_priv *priv,
 569                                  struct iwl_host_cmd *cmd)
 570 {
 571         int cmd_idx;
 572         int ret;
 573
 574         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 575
 576          /* A synchronous command can not have a callback set. */
 577         BUG_ON(cmd->meta.u.callback != NULL);
 578
 579         if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
 580                 IWL_ERR(priv,
 581                         "Error sending %s: Already sending a host command\n",
 582                         get_cmd_string(cmd->id));
 583                 ret = -EBUSY;
 584                 goto out;
 585         }
 586
 587         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 588
 589         if (cmd->meta.flags & CMD_WANT_SKB)
 590                 cmd->meta.source = &cmd->meta;
 591
 592         cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
 593         if (cmd_idx < 0) {
 594                 ret = cmd_idx;
 595                 IWL_ERR(priv,
 596                         "Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 597                         get_cmd_string(cmd->id), ret);
 598                 goto out;
 599         }
 600
 601         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 602                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 603                         HOST_COMPLETE_TIMEOUT);
 604         if (!ret) {
 605                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 606                         IWL_ERR(priv, "Error sending %s: time out after %dms\n",
 607                                   get_cmd_string(cmd->id),
 608                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 609
 610                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 611                         ret = -ETIMEDOUT;
 612                         goto cancel;
 613                 }
 614         }
 615
 616         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 617                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 618                                get_cmd_string(cmd->id));
 619                 ret = -ECANCELED;
 620                 goto fail;
 621         }
 622         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 623                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 624                                get_cmd_string(cmd->id));
 625                 ret = -EIO;
 626                 goto fail;
 627         }
 628         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 629                 IWL_ERR(priv, "Error: Response NULL in '%s'\n",
 630                           get_cmd_string(cmd->id));
 631                 ret = -EIO;
 632                 goto cancel;
 633         }
 634
 635         ret = 0;
 636         goto out;
 637
 638 cancel:
 639         if (cmd->meta.flags & CMD_WANT_SKB) {
 640                 struct iwl_cmd *qcmd;
 641
 642                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 643                  * TX cmd queue. Otherwise in case the cmd comes
 644                  * in later, it will possibly set an invalid
 645                  * address (cmd->meta.source). */
 646                 qcmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 647                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 648         }
 649 fail:
 650         if (cmd->meta.u.skb) {
 651                 dev_kfree_skb_any(cmd->meta.u.skb);
 652                 cmd->meta.u.skb = NULL;
 653         }
 654 out:
 655         clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
 656         return ret;
 657 }
 658
 659 int iwl3945_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 660 {
 661         if (cmd->meta.flags & CMD_ASYNC)
 662                 return iwl3945_send_cmd_async(priv, cmd);
 663
 664         return iwl3945_send_cmd_sync(priv, cmd);
 665 }
 666
 667 int iwl3945_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
 668 {
 669         struct iwl_host_cmd cmd = {
 670                 .id = id,
 671                 .len = len,
 672                 .data = data,
 673         };
 674
 675         return iwl3945_send_cmd_sync(priv, &cmd);
 676 }
 677
 678 static int __must_check iwl3945_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
 679 {
 680         struct iwl_host_cmd cmd = {
 681                 .id = id,
 682                 .len = sizeof(val),
 683                 .data = &val,
 684         };
 685
 686         return iwl3945_send_cmd_sync(priv, &cmd);
 687 }
 688
 689 int iwl3945_send_statistics_request(struct iwl_priv *priv)
 690 {
 691         return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 692 }
 693
 694 /**
 695  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 696  * @band: 2.4 or 5 GHz band
 697  * @channel: Any channel valid for the requested band
 698
 699  * In addition to setting the staging RXON, priv->band is also set.
 700  *
 701  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 702  * in the staging RXON flag structure based on the band
 703  */
 704 static int iwl3945_set_rxon_channel(struct iwl_priv *priv,
 705                                     enum ieee80211_band band,
 706                                     u16 channel)
 707 {
 708         if (!iwl3945_get_channel_info(priv, band, channel)) {
 709                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 710                                channel, band);
 711                 return -EINVAL;
 712         }
 713
 714         if ((le16_to_cpu(priv->staging39_rxon.channel) == channel) &&
 715             (priv->band == band))
 716                 return 0;
 717
 718         priv->staging39_rxon.channel = cpu_to_le16(channel);
 719         if (band == IEEE80211_BAND_5GHZ)
 720                 priv->staging39_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 721         else
 722                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 723
 724         priv->band = band;
 725
 726         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 727
 728         return 0;
 729 }
 730
 731 /**
 732  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 733  *
 734  * NOTE:  This is really only useful during development and can eventually
 735  * be #ifdef'd out once the driver is stable and folks aren't actively
 736  * making changes
 737  */
 738 static int iwl3945_check_rxon_cmd(struct iwl_priv *priv)
 739 {
 740         int error = 0;
 741         int counter = 1;
 742         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
 743
 744         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 745                 error |= le32_to_cpu(rxon->flags &
 746                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 747                                  RXON_FLG_RADAR_DETECT_MSK));
 748                 if (error)
 749                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 750                                     counter++, error);
 751         } else {
 752                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 753                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 754                 if (error)
 755                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 756                                     counter++, error);
 757                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 758                 if (error)
 759                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 760                                     counter++, error);
 761         }
 762         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 763         if (error)
 764                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 765
 766         /* make sure basic rates 6Mbps and 1Mbps are supported */
 767         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 768                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 769         if (error)
 770                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 771
 772         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 773         if (error)
 774                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 775
 776         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 777                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 778         if (error)
 779                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 780                             counter++, error);
 781
 782         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 783                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 784         if (error)
 785                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 786                             counter++, error);
 787
 788         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 789                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 790         if (error)
 791                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 792                             counter++, error);
 793
 794         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 795                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 796                                 RXON_FLG_ANT_A_MSK)) == 0);
 797         if (error)
 798                 IWL_WARN(priv, "check antenna %d %d\n", counter++, error);
 799
 800         if (error)
 801                 IWL_WARN(priv, "Tuning to channel %d\n",
 802                             le16_to_cpu(rxon->channel));
 803
 804         if (error) {
 805                 IWL_ERR(priv, "Not a valid rxon_assoc_cmd field values\n");
 806                 return -1;
 807         }
 808         return 0;
 809 }
 810
 811 /**
 812  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 813  * @priv: staging_rxon is compared to active_rxon
 814  *
 815  * If the RXON structure is changing enough to require a new tune,
 816  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 817  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 818  */
 819 static int iwl3945_full_rxon_required(struct iwl_priv *priv)
 820 {
 821
 822         /* These items are only settable from the full RXON command */
 823         if (!(iwl3945_is_associated(priv)) ||
 824             compare_ether_addr(priv->staging39_rxon.bssid_addr,
 825                                priv->active39_rxon.bssid_addr) ||
 826             compare_ether_addr(priv->staging39_rxon.node_addr,
 827                                priv->active39_rxon.node_addr) ||
 828             compare_ether_addr(priv->staging39_rxon.wlap_bssid_addr,
 829                                priv->active39_rxon.wlap_bssid_addr) ||
 830             (priv->staging39_rxon.dev_type != priv->active39_rxon.dev_type) ||
 831             (priv->staging39_rxon.channel != priv->active39_rxon.channel) ||
 832             (priv->staging39_rxon.air_propagation !=
 833              priv->active39_rxon.air_propagation) ||
 834             (priv->staging39_rxon.assoc_id != priv->active39_rxon.assoc_id))
 835                 return 1;
 836
 837         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 838          * be updated with the RXON_ASSOC command -- however only some
 839          * flag transitions are allowed using RXON_ASSOC */
 840
 841         /* Check if we are not switching bands */
 842         if ((priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 843             (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK))
 844                 return 1;
 845
 846         /* Check if we are switching association toggle */
 847         if ((priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 848                 (priv->active39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 849                 return 1;
 850
 851         return 0;
 852 }
 853
 854 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
 855 {
 856         int rc = 0;
 857         struct iwl_rx_packet *res = NULL;
 858         struct iwl3945_rxon_assoc_cmd rxon_assoc;
 859         struct iwl_host_cmd cmd = {
 860                 .id = REPLY_RXON_ASSOC,
 861                 .len = sizeof(rxon_assoc),
 862                 .meta.flags = CMD_WANT_SKB,
 863                 .data = &rxon_assoc,
 864         };
 865         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging39_rxon;
 866         const struct iwl3945_rxon_cmd *rxon2 = &priv->active39_rxon;
 867
 868         if ((rxon1->flags == rxon2->flags) &&
 869             (rxon1->filter_flags == rxon2->filter_flags) &&
 870             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 871             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 872                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 873                 return 0;
 874         }
 875
 876         rxon_assoc.flags = priv->staging39_rxon.flags;
 877         rxon_assoc.filter_flags = priv->staging39_rxon.filter_flags;
 878         rxon_assoc.ofdm_basic_rates = priv->staging39_rxon.ofdm_basic_rates;
 879         rxon_assoc.cck_basic_rates = priv->staging39_rxon.cck_basic_rates;
 880         rxon_assoc.reserved = 0;
 881
 882         rc = iwl3945_send_cmd_sync(priv, &cmd);
 883         if (rc)
 884                 return rc;
 885
 886         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 887         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 888                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
 889                 rc = -EIO;
 890         }
 891
 892         priv->alloc_rxb_skb--;
 893         dev_kfree_skb_any(cmd.meta.u.skb);
 894
 895         return rc;
 896 }
 897
 898 /**
 899  * iwl3945_commit_rxon - commit staging_rxon to hardware
 900  *
 901  * The RXON command in staging_rxon is committed to the hardware and
 902  * the active_rxon structure is updated with the new data.  This
 903  * function correctly transitions out of the RXON_ASSOC_MSK state if
 904  * a HW tune is required based on the RXON structure changes.
 905  */
 906 static int iwl3945_commit_rxon(struct iwl_priv *priv)
 907 {
 908         /* cast away the const for active_rxon in this function */
 909         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active39_rxon;
 910         int rc = 0;
 911
 912         if (!iwl_is_alive(priv))
 913                 return -1;
 914
 915         /* always get timestamp with Rx frame */
 916         priv->staging39_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 917
 918         /* select antenna */
 919         priv->staging39_rxon.flags &=
 920             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
 921         priv->staging39_rxon.flags |= iwl3945_get_antenna_flags(priv);
 922
 923         rc = iwl3945_check_rxon_cmd(priv);
 924         if (rc) {
 925                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 926                 return -EINVAL;
 927         }
 928
 929         /* If we don't need to send a full RXON, we can use
 930          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
 931          * and other flags for the current radio configuration. */
 932         if (!iwl3945_full_rxon_required(priv)) {
 933                 rc = iwl3945_send_rxon_assoc(priv);
 934                 if (rc) {
 935                         IWL_ERR(priv, "Error setting RXON_ASSOC "
 936                                   "configuration (%d).\n", rc);
 937                         return rc;
 938                 }
 939
 940                 memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
 941
 942                 return 0;
 943         }
 944
 945         /* If we are currently associated and the new config requires
 946          * an RXON_ASSOC and the new config wants the associated mask enabled,
 947          * we must clear the associated from the active configuration
 948          * before we apply the new config */
 949         if (iwl3945_is_associated(priv) &&
 950             (priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 951                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 952                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 953
 954                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
 955                                       sizeof(struct iwl3945_rxon_cmd),
 956                                       &priv->active39_rxon);
 957
 958                 /* If the mask clearing failed then we set
 959                  * active_rxon back to what it was previously */
 960                 if (rc) {
 961                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 962                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
 963                                   "configuration (%d).\n", rc);
 964                         return rc;
 965                 }
 966         }
 967
 968         IWL_DEBUG_INFO("Sending RXON\n"
 969                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 970                        "* channel = %d\n"
 971                        "* bssid = %pM\n",
 972                        ((priv->staging39_rxon.filter_flags &
 973                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 974                        le16_to_cpu(priv->staging39_rxon.channel),
 975                        priv->staging_rxon.bssid_addr);
 976
 977         /* Apply the new configuration */
 978         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
 979                               sizeof(struct iwl3945_rxon_cmd), &priv->staging39_rxon);
 980         if (rc) {
 981                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
 982                 return rc;
 983         }
 984
 985         memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
 986
 987         iwl3945_clear_stations_table(priv);
 988
 989         /* If we issue a new RXON command which required a tune then we must
 990          * send a new TXPOWER command or we won't be able to Tx any frames */
 991         rc = iwl3945_hw_reg_send_txpower(priv);
 992         if (rc) {
 993                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
 994                 return rc;
 995         }
 996
 997         /* Add the broadcast address so we can send broadcast frames */
 998         if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
 999             IWL_INVALID_STATION) {
1000                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
1001                 return -EIO;
1002         }
1003
1004         /* If we have set the ASSOC_MSK and we are in BSS mode then
1005          * add the IWL_AP_ID to the station rate table */
1006         if (iwl3945_is_associated(priv) &&
1007             (priv->iw_mode == NL80211_IFTYPE_STATION))
1008                 if (iwl3945_add_station(priv, priv->active39_rxon.bssid_addr, 1, 0)
1009                     == IWL_INVALID_STATION) {
1010                         IWL_ERR(priv, "Error adding AP address for transmit\n");
1011                         return -EIO;
1012                 }
1013
1014         /* Init the hardware's rate fallback order based on the band */
1015         rc = iwl3945_init_hw_rate_table(priv);
1016         if (rc) {
1017                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
1018                 return -EIO;
1019         }
1020
1021         return 0;
1022 }
1023
1024 static int iwl3945_send_bt_config(struct iwl_priv *priv)
1025 {
1026         struct iwl_bt_cmd bt_cmd = {
1027                 .flags = 3,
1028                 .lead_time = 0xAA,
1029                 .max_kill = 1,
1030                 .kill_ack_mask = 0,
1031                 .kill_cts_mask = 0,
1032         };
1033
1034         return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1035                                         sizeof(bt_cmd), &bt_cmd);
1036 }
1037
1038 static int iwl3945_send_scan_abort(struct iwl_priv *priv)
1039 {
1040         int rc = 0;
1041         struct iwl_rx_packet *res;
1042         struct iwl_host_cmd cmd = {
1043                 .id = REPLY_SCAN_ABORT_CMD,
1044                 .meta.flags = CMD_WANT_SKB,
1045         };
1046
1047         /* If there isn't a scan actively going on in the hardware
1048          * then we are in between scan bands and not actually
1049          * actively scanning, so don't send the abort command */
1050         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1051                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1052                 return 0;
1053         }
1054
1055         rc = iwl3945_send_cmd_sync(priv, &cmd);
1056         if (rc) {
1057                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1058                 return rc;
1059         }
1060
1061         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1062         if (res->u.status != CAN_ABORT_STATUS) {
1063                 /* The scan abort will return 1 for success or
1064                  * 2 for "failure".  A failure condition can be
1065                  * due to simply not being in an active scan which
1066                  * can occur if we send the scan abort before we
1067                  * the microcode has notified us that a scan is
1068                  * completed. */
1069                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1070                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1071                 clear_bit(STATUS_SCAN_HW, &priv->status);
1072         }
1073
1074         dev_kfree_skb_any(cmd.meta.u.skb);
1075
1076         return rc;
1077 }
1078
1079 static int iwl3945_add_sta_sync_callback(struct iwl_priv *priv,
1080                                      struct iwl_cmd *cmd, struct sk_buff *skb)
1081 {
1082         struct iwl_rx_packet *res = NULL;
1083
1084         if (!skb) {
1085                 IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
1086                 return 1;
1087         }
1088
1089         res = (struct iwl_rx_packet *)skb->data;
1090         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1091                 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
1092                           res->hdr.flags);
1093                 return 1;
1094         }
1095
1096         switch (res->u.add_sta.status) {
1097         case ADD_STA_SUCCESS_MSK:
1098                 break;
1099         default:
1100                 break;
1101         }
1102
1103         /* We didn't cache the SKB; let the caller free it */
1104         return 1;
1105 }
1106
1107 int iwl3945_send_add_station(struct iwl_priv *priv,
1108                          struct iwl3945_addsta_cmd *sta, u8 flags)
1109 {
1110         struct iwl_rx_packet *res = NULL;
1111         int rc = 0;
1112         struct iwl_host_cmd cmd = {
1113                 .id = REPLY_ADD_STA,
1114                 .len = sizeof(struct iwl3945_addsta_cmd),
1115                 .meta.flags = flags,
1116                 .data = sta,
1117         };
1118
1119         if (flags & CMD_ASYNC)
1120                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1121         else
1122                 cmd.meta.flags |= CMD_WANT_SKB;
1123
1124         rc = iwl3945_send_cmd(priv, &cmd);
1125
1126         if (rc || (flags & CMD_ASYNC))
1127                 return rc;
1128
1129         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1130         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1131                 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
1132                           res->hdr.flags);
1133                 rc = -EIO;
1134         }
1135
1136         if (rc == 0) {
1137                 switch (res->u.add_sta.status) {
1138                 case ADD_STA_SUCCESS_MSK:
1139                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1140                         break;
1141                 default:
1142                         rc = -EIO;
1143                         IWL_WARN(priv, "REPLY_ADD_STA failed\n");
1144                         break;
1145                 }
1146         }
1147
1148         priv->alloc_rxb_skb--;
1149         dev_kfree_skb_any(cmd.meta.u.skb);
1150
1151         return rc;
1152 }
1153
1154 static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
1155                                    struct ieee80211_key_conf *keyconf,
1156                                    u8 sta_id)
1157 {
1158         unsigned long flags;
1159         __le16 key_flags = 0;
1160
1161         switch (keyconf->alg) {
1162         case ALG_CCMP:
1163                 key_flags |= STA_KEY_FLG_CCMP;
1164                 key_flags |= cpu_to_le16(
1165                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1166                 key_flags &= ~STA_KEY_FLG_INVALID;
1167                 break;
1168         case ALG_TKIP:
1169         case ALG_WEP:
1170         default:
1171                 return -EINVAL;
1172         }
1173         spin_lock_irqsave(&priv->sta_lock, flags);
1174         priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
1175         priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
1176         memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
1177                keyconf->keylen);
1178
1179         memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
1180                keyconf->keylen);
1181         priv->stations_39[sta_id].sta.key.key_flags = key_flags;
1182         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1183         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1184
1185         spin_unlock_irqrestore(&priv->sta_lock, flags);
1186
1187         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1188         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
1189         return 0;
1190 }
1191
1192 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1193 {
1194         unsigned long flags;
1195
1196         spin_lock_irqsave(&priv->sta_lock, flags);
1197         memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1198         memset(&priv->stations_39[sta_id].sta.key, 0,
1199                 sizeof(struct iwl4965_keyinfo));
1200         priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1201         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1202         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1203         spin_unlock_irqrestore(&priv->sta_lock, flags);
1204
1205         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1206         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
1207         return 0;
1208 }
1209
1210 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
1211 {
1212         struct list_head *element;
1213
1214         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1215                        priv->frames_count);
1216
1217         while (!list_empty(&priv->free_frames)) {
1218                 element = priv->free_frames.next;
1219                 list_del(element);
1220                 kfree(list_entry(element, struct iwl3945_frame, list));
1221                 priv->frames_count--;
1222         }
1223
1224         if (priv->frames_count) {
1225                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
1226                             priv->frames_count);
1227                 priv->frames_count = 0;
1228         }
1229 }
1230
1231 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
1232 {
1233         struct iwl3945_frame *frame;
1234         struct list_head *element;
1235         if (list_empty(&priv->free_frames)) {
1236                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1237                 if (!frame) {
1238                         IWL_ERR(priv, "Could not allocate frame!\n");
1239                         return NULL;
1240                 }
1241
1242                 priv->frames_count++;
1243                 return frame;
1244         }
1245
1246         element = priv->free_frames.next;
1247         list_del(element);
1248         return list_entry(element, struct iwl3945_frame, list);
1249 }
1250
1251 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
1252 {
1253         memset(frame, 0, sizeof(*frame));
1254         list_add(&frame->list, &priv->free_frames);
1255 }
1256
1257 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
1258                                 struct ieee80211_hdr *hdr,
1259                                 int left)
1260 {
1261
1262         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1263             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1264              (priv->iw_mode != NL80211_IFTYPE_AP)))
1265                 return 0;
1266
1267         if (priv->ibss_beacon->len > left)
1268                 return 0;
1269
1270         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1271
1272         return priv->ibss_beacon->len;
1273 }
1274
1275 static u8 iwl3945_rate_get_lowest_plcp(struct iwl_priv *priv)
1276 {
1277         u8 i;
1278         int rate_mask;
1279
1280         /* Set rate mask*/
1281         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1282                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1283         else
1284                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
1285
1286         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1287              i = iwl3945_rates[i].next_ieee) {
1288                 if (rate_mask & (1 << i))
1289                         return iwl3945_rates[i].plcp;
1290         }
1291
1292         /* No valid rate was found. Assign the lowest one */
1293         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1294                 return IWL_RATE_1M_PLCP;
1295         else
1296                 return IWL_RATE_6M_PLCP;
1297 }
1298
1299 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
1300 {
1301         struct iwl3945_frame *frame;
1302         unsigned int frame_size;
1303         int rc;
1304         u8 rate;
1305
1306         frame = iwl3945_get_free_frame(priv);
1307
1308         if (!frame) {
1309                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
1310                           "command.\n");
1311                 return -ENOMEM;
1312         }
1313
1314         rate = iwl3945_rate_get_lowest_plcp(priv);
1315
1316         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1317
1318         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1319                               &frame->u.cmd[0]);
1320
1321         iwl3945_free_frame(priv, frame);
1322
1323         return rc;
1324 }
1325
1326 /******************************************************************************
1327  *
1328  * EEPROM related functions
1329  *
1330  ******************************************************************************/
1331
1332 static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1333 {
1334         memcpy(mac, priv->eeprom39.mac_address, 6);
1335 }
1336
1337 /*
1338  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1339  * embedded controller) as EEPROM reader; each read is a series of pulses
1340  * to/from the EEPROM chip, not a single event, so even reads could conflict
1341  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1342  * simply claims ownership, which should be safe when this function is called
1343  * (i.e. before loading uCode!).
1344  */
1345 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
1346 {
1347         _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1348         return 0;
1349 }
1350
1351 /**
1352  * iwl3945_eeprom_init - read EEPROM contents
1353  *
1354  * Load the EEPROM contents from adapter into priv->eeprom39
1355  *
1356  * NOTE:  This routine uses the non-debug IO access functions.
1357  */
1358 int iwl3945_eeprom_init(struct iwl_priv *priv)
1359 {
1360         u16 *e = (u16 *)&priv->eeprom39;
1361         u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1362         int sz = sizeof(priv->eeprom39);
1363         int ret;
1364         u16 addr;
1365
1366         /* The EEPROM structure has several padding buffers within it
1367          * and when adding new EEPROM maps is subject to programmer errors
1368          * which may be very difficult to identify without explicitly
1369          * checking the resulting size of the eeprom map. */
1370         BUILD_BUG_ON(sizeof(priv->eeprom39) != IWL_EEPROM_IMAGE_SIZE);
1371
1372         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1373                 IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
1374                 return -ENOENT;
1375         }
1376
1377         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1378         ret = iwl3945_eeprom_acquire_semaphore(priv);
1379         if (ret < 0) {
1380                 IWL_ERR(priv, "Failed to acquire EEPROM semaphore.\n");
1381                 return -ENOENT;
1382         }
1383
1384         /* eeprom is an array of 16bit values */
1385         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1386                 u32 r;
1387
1388                 _iwl_write32(priv, CSR_EEPROM_REG,
1389                                  CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1390                 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1391                 ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
1392                                               CSR_EEPROM_REG_READ_VALID_MSK,
1393                                               IWL_EEPROM_ACCESS_TIMEOUT);
1394                 if (ret < 0) {
1395                         IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
1396                         return ret;
1397                 }
1398
1399                 r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
1400                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1401         }
1402
1403         return 0;
1404 }
1405
1406 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
1407 {
1408         if (priv->shared_virt)
1409                 pci_free_consistent(priv->pci_dev,
1410                                     sizeof(struct iwl3945_shared),
1411                                     priv->shared_virt,
1412                                     priv->shared_phys);
1413 }
1414
1415 /**
1416  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1417  *
1418  * return : set the bit for each supported rate insert in ie
1419  */
1420 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1421                                     u16 basic_rate, int *left)
1422 {
1423         u16 ret_rates = 0, bit;
1424         int i;
1425         u8 *cnt = ie;
1426         u8 *rates = ie + 1;
1427
1428         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1429                 if (bit & supported_rate) {
1430                         ret_rates |= bit;
1431                         rates[*cnt] = iwl3945_rates[i].ieee |
1432                                 ((bit & basic_rate) ? 0x80 : 0x00);
1433                         (*cnt)++;
1434                         (*left)--;
1435                         if ((*left <= 0) ||
1436                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1437                                 break;
1438                 }
1439         }
1440
1441         return ret_rates;
1442 }
1443
1444 /**
1445  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1446  */
1447 static u16 iwl3945_fill_probe_req(struct iwl_priv *priv,
1448                               struct ieee80211_mgmt *frame,
1449                               int left)
1450 {
1451         int len = 0;
1452         u8 *pos = NULL;
1453         u16 active_rates, ret_rates, cck_rates;
1454
1455         /* Make sure there is enough space for the probe request,
1456          * two mandatory IEs and the data */
1457         left -= 24;
1458         if (left < 0)
1459                 return 0;
1460         len += 24;
1461
1462         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1463         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
1464         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1465         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
1466         frame->seq_ctrl = 0;
1467
1468         /* fill in our indirect SSID IE */
1469         /* ...next IE... */
1470
1471         left -= 2;
1472         if (left < 0)
1473                 return 0;
1474         len += 2;
1475         pos = &(frame->u.probe_req.variable[0]);
1476         *pos++ = WLAN_EID_SSID;
1477         *pos++ = 0;
1478
1479         /* fill in supported rate */
1480         /* ...next IE... */
1481         left -= 2;
1482         if (left < 0)
1483                 return 0;
1484
1485         /* ... fill it in... */
1486         *pos++ = WLAN_EID_SUPP_RATES;
1487         *pos = 0;
1488
1489         priv->active_rate = priv->rates_mask;
1490         active_rates = priv->active_rate;
1491         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1492
1493         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1494         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1495                         priv->active_rate_basic, &left);
1496         active_rates &= ~ret_rates;
1497
1498         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1499                                  priv->active_rate_basic, &left);
1500         active_rates &= ~ret_rates;
1501
1502         len += 2 + *pos;
1503         pos += (*pos) + 1;
1504         if (active_rates == 0)
1505                 goto fill_end;
1506
1507         /* fill in supported extended rate */
1508         /* ...next IE... */
1509         left -= 2;
1510         if (left < 0)
1511                 return 0;
1512         /* ... fill it in... */
1513         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1514         *pos = 0;
1515         iwl3945_supported_rate_to_ie(pos, active_rates,
1516                                  priv->active_rate_basic, &left);
1517         if (*pos > 0)
1518                 len += 2 + *pos;
1519
1520  fill_end:
1521         return (u16)len;
1522 }
1523
1524 /*
1525  * QoS  support
1526 */
1527 static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
1528                                        struct iwl_qosparam_cmd *qos)
1529 {
1530
1531         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1532                                 sizeof(struct iwl_qosparam_cmd), qos);
1533 }
1534
1535 static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
1536 {
1537         unsigned long flags;
1538
1539         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1540                 return;
1541
1542         spin_lock_irqsave(&priv->lock, flags);
1543         priv->qos_data.def_qos_parm.qos_flags = 0;
1544
1545         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1546             !priv->qos_data.qos_cap.q_AP.txop_request)
1547                 priv->qos_data.def_qos_parm.qos_flags |=
1548                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1549
1550         if (priv->qos_data.qos_active)
1551                 priv->qos_data.def_qos_parm.qos_flags |=
1552                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1553
1554         spin_unlock_irqrestore(&priv->lock, flags);
1555
1556         if (force || iwl3945_is_associated(priv)) {
1557                 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
1558                               priv->qos_data.qos_active);
1559
1560                 iwl3945_send_qos_params_command(priv,
1561                                 &(priv->qos_data.def_qos_parm));
1562         }
1563 }
1564
1565 /*
1566  * Power management (not Tx power!) functions
1567  */
1568 #define MSEC_TO_USEC 1024
1569
1570
1571 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1572 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1573 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1574 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1575                                      __constant_cpu_to_le32(X1), \
1576                                      __constant_cpu_to_le32(X2), \
1577                                      __constant_cpu_to_le32(X3), \
1578                                      __constant_cpu_to_le32(X4)}
1579
1580 /* default power management (not Tx power) table values */
1581 /* for TIM  0-10 */
1582 static struct iwl_power_vec_entry range_0[IWL39_POWER_AC] = {
1583         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1584         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1585         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1586         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1587         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1588         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1589 };
1590
1591 /* for TIM > 10 */
1592 static struct iwl_power_vec_entry range_1[IWL39_POWER_AC] = {
1593         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1594         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1595                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1596         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1597                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1598         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1599                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1600         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1601         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1602                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1603 };
1604
1605 int iwl3945_power_init_handle(struct iwl_priv *priv)
1606 {
1607         int rc = 0, i;
1608         struct iwl3945_power_mgr *pow_data;
1609         int size = sizeof(struct iwl_power_vec_entry) * IWL39_POWER_AC;
1610         u16 pci_pm;
1611
1612         IWL_DEBUG_POWER("Initialize power \n");
1613
1614         pow_data = &(priv->power_data_39);
1615
1616         memset(pow_data, 0, sizeof(*pow_data));
1617
1618         pow_data->active_index = IWL_POWER_RANGE_0;
1619         pow_data->dtim_val = 0xffff;
1620
1621         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1622         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1623
1624         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1625         if (rc != 0)
1626                 return 0;
1627         else {
1628                 struct iwl_powertable_cmd *cmd;
1629
1630                 IWL_DEBUG_POWER("adjust power command flags\n");
1631
1632                 for (i = 0; i < IWL39_POWER_AC; i++) {
1633                         cmd = &pow_data->pwr_range_0[i].cmd;
1634
1635                         if (pci_pm & 0x1)
1636                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1637                         else
1638                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1639                 }
1640         }
1641         return rc;
1642 }
1643
1644 static int iwl3945_update_power_cmd(struct iwl_priv *priv,
1645                                 struct iwl_powertable_cmd *cmd, u32 mode)
1646 {
1647         int rc = 0, i;
1648         u8 skip;
1649         u32 max_sleep = 0;
1650         struct iwl_power_vec_entry *range;
1651         u8 period = 0;
1652         struct iwl3945_power_mgr *pow_data;
1653
1654         if (mode > IWL_POWER_INDEX_5) {
1655                 IWL_DEBUG_POWER("Error invalid power mode \n");
1656                 return -1;
1657         }
1658         pow_data = &(priv->power_data_39);
1659
1660         if (pow_data->active_index == IWL_POWER_RANGE_0)
1661                 range = &pow_data->pwr_range_0[0];
1662         else
1663                 range = &pow_data->pwr_range_1[1];
1664
1665         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1666
1667 #ifdef IWL_MAC80211_DISABLE
1668         if (priv->assoc_network != NULL) {
1669                 unsigned long flags;
1670
1671                 period = priv->assoc_network->tim.tim_period;
1672         }
1673 #endif  /*IWL_MAC80211_DISABLE */
1674         skip = range[mode].no_dtim;
1675
1676         if (period == 0) {
1677                 period = 1;
1678                 skip = 0;
1679         }
1680
1681         if (skip == 0) {
1682                 max_sleep = period;
1683                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1684         } else {
1685                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1686                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1687                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1688         }
1689
1690         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1691                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1692                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1693         }
1694
1695         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1696         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1697         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1698         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1699                         le32_to_cpu(cmd->sleep_interval[0]),
1700                         le32_to_cpu(cmd->sleep_interval[1]),
1701                         le32_to_cpu(cmd->sleep_interval[2]),
1702                         le32_to_cpu(cmd->sleep_interval[3]),
1703                         le32_to_cpu(cmd->sleep_interval[4]));
1704
1705         return rc;
1706 }
1707
1708 static int iwl3945_send_power_mode(struct iwl_priv *priv, u32 mode)
1709 {
1710         u32 uninitialized_var(final_mode);
1711         int rc;
1712         struct iwl_powertable_cmd cmd;
1713
1714         /* If on battery, set to 3,
1715          * if plugged into AC power, set to CAM ("continuously aware mode"),
1716          * else user level */
1717         switch (mode) {
1718         case IWL39_POWER_BATTERY:
1719                 final_mode = IWL_POWER_INDEX_3;
1720                 break;
1721         case IWL39_POWER_AC:
1722                 final_mode = IWL_POWER_MODE_CAM;
1723                 break;
1724         default:
1725                 final_mode = mode;
1726                 break;
1727         }
1728
1729         iwl3945_update_power_cmd(priv, &cmd, final_mode);
1730
1731         /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1732         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD,
1733                                 sizeof(struct iwl3945_powertable_cmd), &cmd);
1734
1735         if (final_mode == IWL_POWER_MODE_CAM)
1736                 clear_bit(STATUS_POWER_PMI, &priv->status);
1737         else
1738                 set_bit(STATUS_POWER_PMI, &priv->status);
1739
1740         return rc;
1741 }
1742
1743 /**
1744  * iwl3945_scan_cancel - Cancel any currently executing HW scan
1745  *
1746  * NOTE: priv->mutex is not required before calling this function
1747  */
1748 static int iwl3945_scan_cancel(struct iwl_priv *priv)
1749 {
1750         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1751                 clear_bit(STATUS_SCANNING, &priv->status);
1752                 return 0;
1753         }
1754
1755         if (test_bit(STATUS_SCANNING, &priv->status)) {
1756                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1757                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1758                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1759                         queue_work(priv->workqueue, &priv->abort_scan);
1760
1761                 } else
1762                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1763
1764                 return test_bit(STATUS_SCANNING, &priv->status);
1765         }
1766
1767         return 0;
1768 }
1769
1770 /**
1771  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
1772  * @ms: amount of time to wait (in milliseconds) for scan to abort
1773  *
1774  * NOTE: priv->mutex must be held before calling this function
1775  */
1776 static int iwl3945_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1777 {
1778         unsigned long now = jiffies;
1779         int ret;
1780
1781         ret = iwl3945_scan_cancel(priv);
1782         if (ret && ms) {
1783                 mutex_unlock(&priv->mutex);
1784                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1785                                 test_bit(STATUS_SCANNING, &priv->status))
1786                         msleep(1);
1787                 mutex_lock(&priv->mutex);
1788
1789                 return test_bit(STATUS_SCANNING, &priv->status);
1790         }
1791
1792         return ret;
1793 }
1794
1795 #define MAX_UCODE_BEACON_INTERVAL       1024
1796 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1797
1798 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
1799 {
1800         u16 new_val = 0;
1801         u16 beacon_factor = 0;
1802
1803         beacon_factor =
1804             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1805                 / MAX_UCODE_BEACON_INTERVAL;
1806         new_val = beacon_val / beacon_factor;
1807
1808         return cpu_to_le16(new_val);
1809 }
1810
1811 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
1812 {
1813         u64 interval_tm_unit;
1814         u64 tsf, result;
1815         unsigned long flags;
1816         struct ieee80211_conf *conf = NULL;
1817         u16 beacon_int = 0;
1818
1819         conf = ieee80211_get_hw_conf(priv->hw);
1820
1821         spin_lock_irqsave(&priv->lock, flags);
1822         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
1823         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1824
1825         tsf = priv->timestamp;
1826
1827         beacon_int = priv->beacon_int;
1828         spin_unlock_irqrestore(&priv->lock, flags);
1829
1830         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
1831                 if (beacon_int == 0) {
1832                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1833                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1834                 } else {
1835                         priv->rxon_timing.beacon_interval =
1836                                 cpu_to_le16(beacon_int);
1837                         priv->rxon_timing.beacon_interval =
1838                             iwl3945_adjust_beacon_interval(
1839                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1840                 }
1841
1842                 priv->rxon_timing.atim_window = 0;
1843         } else {
1844                 priv->rxon_timing.beacon_interval =
1845                         iwl3945_adjust_beacon_interval(conf->beacon_int);
1846                 /* TODO: we need to get atim_window from upper stack
1847                  * for now we set to 0 */
1848                 priv->rxon_timing.atim_window = 0;
1849         }
1850
1851         interval_tm_unit =
1852                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1853         result = do_div(tsf, interval_tm_unit);
1854         priv->rxon_timing.beacon_init_val =
1855             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1856
1857         IWL_DEBUG_ASSOC
1858             ("beacon interval %d beacon timer %d beacon tim %d\n",
1859                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1860                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1861                 le16_to_cpu(priv->rxon_timing.atim_window));
1862 }
1863
1864 static int iwl3945_scan_initiate(struct iwl_priv *priv)
1865 {
1866         if (!iwl_is_ready_rf(priv)) {
1867                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1868                 return -EIO;
1869         }
1870
1871         if (test_bit(STATUS_SCANNING, &priv->status)) {
1872                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1873                 return -EAGAIN;
1874         }
1875
1876         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1877                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1878                                "Queuing.\n");
1879                 return -EAGAIN;
1880         }
1881
1882         IWL_DEBUG_INFO("Starting scan...\n");
1883         if (priv->cfg->sku & IWL_SKU_G)
1884                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
1885         if (priv->cfg->sku & IWL_SKU_A)
1886                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
1887         set_bit(STATUS_SCANNING, &priv->status);
1888         priv->scan_start = jiffies;
1889         priv->scan_pass_start = priv->scan_start;
1890
1891         queue_work(priv->workqueue, &priv->request_scan);
1892
1893         return 0;
1894 }
1895
1896 static int iwl3945_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
1897 {
1898         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
1899
1900         if (hw_decrypt)
1901                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
1902         else
1903                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
1904
1905         return 0;
1906 }
1907
1908 static void iwl3945_set_flags_for_phymode(struct iwl_priv *priv,
1909                                           enum ieee80211_band band)
1910 {
1911         if (band == IEEE80211_BAND_5GHZ) {
1912                 priv->staging39_rxon.flags &=
1913                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1914                       | RXON_FLG_CCK_MSK);
1915                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1916         } else {
1917                 /* Copied from iwl3945_bg_post_associate() */
1918                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1919                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1920                 else
1921                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1922
1923                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1924                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1925
1926                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1927                 priv->staging39_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1928                 priv->staging39_rxon.flags &= ~RXON_FLG_CCK_MSK;
1929         }
1930 }
1931
1932 /*
1933  * initialize rxon structure with default values from eeprom
1934  */
1935 static void iwl3945_connection_init_rx_config(struct iwl_priv *priv,
1936                                               int mode)
1937 {
1938         const struct iwl_channel_info *ch_info;
1939
1940         memset(&priv->staging39_rxon, 0, sizeof(priv->staging39_rxon));
1941
1942         switch (mode) {
1943         case NL80211_IFTYPE_AP:
1944                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_AP;
1945                 break;
1946
1947         case NL80211_IFTYPE_STATION:
1948                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_ESS;
1949                 priv->staging39_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1950                 break;
1951
1952         case NL80211_IFTYPE_ADHOC:
1953                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1954                 priv->staging39_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1955                 priv->staging39_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1956                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1957                 break;
1958
1959         case NL80211_IFTYPE_MONITOR:
1960                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1961                 priv->staging39_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1962                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1963                 break;
1964         default:
1965                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1966                 break;
1967         }
1968
1969 #if 0
1970         /* TODO:  Figure out when short_preamble would be set and cache from
1971          * that */
1972         if (!hw_to_local(priv->hw)->short_preamble)
1973                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1974         else
1975                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1976 #endif
1977
1978         ch_info = iwl3945_get_channel_info(priv, priv->band,
1979                                        le16_to_cpu(priv->active39_rxon.channel));
1980
1981         if (!ch_info)
1982                 ch_info = &priv->channel_info[0];
1983
1984         /*
1985          * in some case A channels are all non IBSS
1986          * in this case force B/G channel
1987          */
1988         if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
1989                 ch_info = &priv->channel_info[0];
1990
1991         priv->staging39_rxon.channel = cpu_to_le16(ch_info->channel);
1992         if (is_channel_a_band(ch_info))
1993                 priv->band = IEEE80211_BAND_5GHZ;
1994         else
1995                 priv->band = IEEE80211_BAND_2GHZ;
1996
1997         iwl3945_set_flags_for_phymode(priv, priv->band);
1998
1999         priv->staging39_rxon.ofdm_basic_rates =
2000             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2001         priv->staging39_rxon.cck_basic_rates =
2002             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2003 }
2004
2005 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
2006 {
2007         if (mode == NL80211_IFTYPE_ADHOC) {
2008                 const struct iwl_channel_info *ch_info;
2009
2010                 ch_info = iwl3945_get_channel_info(priv,
2011                         priv->band,
2012                         le16_to_cpu(priv->staging39_rxon.channel));
2013
2014                 if (!ch_info || !is_channel_ibss(ch_info)) {
2015                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2016                                   le16_to_cpu(priv->staging39_rxon.channel));
2017                         return -EINVAL;
2018                 }
2019         }
2020
2021         iwl3945_connection_init_rx_config(priv, mode);
2022         memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2023
2024         iwl3945_clear_stations_table(priv);
2025
2026         /* don't commit rxon if rf-kill is on*/
2027         if (!iwl_is_ready_rf(priv))
2028                 return -EAGAIN;
2029
2030         cancel_delayed_work(&priv->scan_check);
2031         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2032                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2033                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2034                 return -EAGAIN;
2035         }
2036
2037         iwl3945_commit_rxon(priv);
2038
2039         return 0;
2040 }
2041
2042 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2043                                       struct ieee80211_tx_info *info,
2044                                       struct iwl_cmd *cmd,
2045                                       struct sk_buff *skb_frag,
2046                                       int last_frag)
2047 {
2048         struct iwl3945_hw_key *keyinfo =
2049             &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
2050
2051         switch (keyinfo->alg) {
2052         case ALG_CCMP:
2053                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2054                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2055                 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
2056                 break;
2057
2058         case ALG_TKIP:
2059 #if 0
2060                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2061
2062                 if (last_frag)
2063                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2064                                8);
2065                 else
2066                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2067 #endif
2068                 break;
2069
2070         case ALG_WEP:
2071                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2072                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2073
2074                 if (keyinfo->keylen == 13)
2075                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2076
2077                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2078
2079                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2080                              "with key %d\n", info->control.hw_key->hw_key_idx);
2081                 break;
2082
2083         default:
2084                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
2085                 break;
2086         }
2087 }
2088
2089 /*
2090  * handle build REPLY_TX command notification.
2091  */
2092 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
2093                                   struct iwl_cmd *cmd,
2094                                   struct ieee80211_tx_info *info,
2095                                   struct ieee80211_hdr *hdr,
2096                                   int is_unicast, u8 std_id)
2097 {
2098         __le16 fc = hdr->frame_control;
2099         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2100         u8 rc_flags = info->control.rates[0].flags;
2101
2102         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2103         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
2104                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2105                 if (ieee80211_is_mgmt(fc))
2106                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2107                 if (ieee80211_is_probe_resp(fc) &&
2108                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2109                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2110         } else {
2111                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2112                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2113         }
2114
2115         cmd->cmd.tx.sta_id = std_id;
2116         if (ieee80211_has_morefrags(fc))
2117                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2118
2119         if (ieee80211_is_data_qos(fc)) {
2120                 u8 *qc = ieee80211_get_qos_ctl(hdr);
2121                 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
2122                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2123         } else {
2124                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2125         }
2126
2127         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
2128                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2129                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2130         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
2131                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2132                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2133         }
2134
2135         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2136                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2137
2138         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2139         if (ieee80211_is_mgmt(fc)) {
2140                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2141                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2142                 else
2143                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2144         } else {
2145                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2146 #ifdef CONFIG_IWL3945_LEDS
2147                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2148 #endif
2149         }
2150
2151         cmd->cmd.tx.driver_txop = 0;
2152         cmd->cmd.tx.tx_flags = tx_flags;
2153         cmd->cmd.tx.next_frame_len = 0;
2154 }
2155
2156 /**
2157  * iwl3945_get_sta_id - Find station's index within station table
2158  */
2159 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2160 {
2161         int sta_id;
2162         u16 fc = le16_to_cpu(hdr->frame_control);
2163
2164         /* If this frame is broadcast or management, use broadcast station id */
2165         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2166             is_multicast_ether_addr(hdr->addr1))
2167                 return priv->hw_params.bcast_sta_id;
2168
2169         switch (priv->iw_mode) {
2170
2171         /* If we are a client station in a BSS network, use the special
2172          * AP station entry (that's the only station we communicate with) */
2173         case NL80211_IFTYPE_STATION:
2174                 return IWL_AP_ID;
2175
2176         /* If we are an AP, then find the station, or use BCAST */
2177         case NL80211_IFTYPE_AP:
2178                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2179                 if (sta_id != IWL_INVALID_STATION)
2180                         return sta_id;
2181                 return priv->hw_params.bcast_sta_id;
2182
2183         /* If this frame is going out to an IBSS network, find the station,
2184          * or create a new station table entry */
2185         case NL80211_IFTYPE_ADHOC: {
2186                 /* Create new station table entry */
2187                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2188                 if (sta_id != IWL_INVALID_STATION)
2189                         return sta_id;
2190
2191                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2192
2193                 if (sta_id != IWL_INVALID_STATION)
2194                         return sta_id;
2195
2196                 IWL_DEBUG_DROP("Station %pM not in station map. "
2197                                "Defaulting to broadcast...\n",
2198                                hdr->addr1);
2199                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2200                 return priv->hw_params.bcast_sta_id;
2201         }
2202         /* If we are in monitor mode, use BCAST. This is required for
2203          * packet injection. */
2204         case NL80211_IFTYPE_MONITOR:
2205                 return priv->hw_params.bcast_sta_id;
2206
2207         default:
2208                 IWL_WARN(priv, "Unknown mode of operation: %d\n",
2209                         priv->iw_mode);
2210                 return priv->hw_params.bcast_sta_id;
2211         }
2212 }
2213
2214 /*
2215  * start REPLY_TX command process
2216  */
2217 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
2218 {
2219         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2220         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2221         struct iwl3945_tfd *tfd;
2222         int txq_id = skb_get_queue_mapping(skb);
2223         struct iwl_tx_queue *txq = NULL;
2224         struct iwl_queue *q = NULL;
2225         dma_addr_t phys_addr;
2226         dma_addr_t txcmd_phys;
2227         struct iwl_cmd *out_cmd = NULL;
2228         u16 len, idx, len_org, hdr_len;
2229         u8 id;
2230         u8 unicast;
2231         u8 sta_id;
2232         u8 tid = 0;
2233         u16 seq_number = 0;
2234         __le16 fc;
2235         u8 wait_write_ptr = 0;
2236         u8 *qc = NULL;
2237         unsigned long flags;
2238         int rc;
2239
2240         spin_lock_irqsave(&priv->lock, flags);
2241         if (iwl_is_rfkill(priv)) {
2242                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2243                 goto drop_unlock;
2244         }
2245
2246         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2247                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
2248                 goto drop_unlock;
2249         }
2250
2251         unicast = !is_multicast_ether_addr(hdr->addr1);
2252         id = 0;
2253
2254         fc = hdr->frame_control;
2255
2256 #ifdef CONFIG_IWL3945_DEBUG
2257         if (ieee80211_is_auth(fc))
2258                 IWL_DEBUG_TX("Sending AUTH frame\n");
2259         else if (ieee80211_is_assoc_req(fc))
2260                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2261         else if (ieee80211_is_reassoc_req(fc))
2262                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2263 #endif
2264
2265         /* drop all data frame if we are not associated */
2266         if (ieee80211_is_data(fc) &&
2267             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2268             (!iwl3945_is_associated(priv) ||
2269              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
2270                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2271                 goto drop_unlock;
2272         }
2273
2274         spin_unlock_irqrestore(&priv->lock, flags);
2275
2276         hdr_len = ieee80211_hdrlen(fc);
2277
2278         /* Find (or create) index into station table for destination station */
2279         sta_id = iwl3945_get_sta_id(priv, hdr);
2280         if (sta_id == IWL_INVALID_STATION) {
2281                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
2282                                hdr->addr1);
2283                 goto drop;
2284         }
2285
2286         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2287
2288         if (ieee80211_is_data_qos(fc)) {
2289                 qc = ieee80211_get_qos_ctl(hdr);
2290                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
2291                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
2292                                 IEEE80211_SCTL_SEQ;
2293                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2294                         (hdr->seq_ctrl &
2295                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2296                 seq_number += 0x10;
2297         }
2298
2299         /* Descriptor for chosen Tx queue */
2300         txq = &priv->txq[txq_id];
2301         q = &txq->q;
2302
2303         spin_lock_irqsave(&priv->lock, flags);
2304
2305         /* Set up first empty TFD within this queue's circular TFD buffer */
2306         tfd = &txq->tfds39[q->write_ptr];
2307         memset(tfd, 0, sizeof(*tfd));
2308         idx = get_cmd_index(q, q->write_ptr, 0);
2309
2310         /* Set up driver data for this TFD */
2311         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
2312         txq->txb[q->write_ptr].skb[0] = skb;
2313
2314         /* Init first empty entry in queue's array of Tx/cmd buffers */
2315         out_cmd = txq->cmd[idx];
2316         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2317         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2318
2319         /*
2320          * Set up the Tx-command (not MAC!) header.
2321          * Store the chosen Tx queue and TFD index within the sequence field;
2322          * after Tx, uCode's Tx response will return this value so driver can
2323          * locate the frame within the tx queue and do post-tx processing.
2324          */
2325         out_cmd->hdr.cmd = REPLY_TX;
2326         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2327                                 INDEX_TO_SEQ(q->write_ptr)));
2328
2329         /* Copy MAC header from skb into command buffer */
2330         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2331
2332         /*
2333          * Use the first empty entry in this queue's command buffer array
2334          * to contain the Tx command and MAC header concatenated together
2335          * (payload data will be in another buffer).
2336          * Size of this varies, due to varying MAC header length.
2337          * If end is not dword aligned, we'll have 2 extra bytes at the end
2338          * of the MAC header (device reads on dword boundaries).
2339          * We'll tell device about this padding later.
2340          */
2341         len = sizeof(struct iwl3945_tx_cmd) +
2342                         sizeof(struct iwl_cmd_header) + hdr_len;
2343
2344         len_org = len;
2345         len = (len + 3) & ~3;
2346
2347         if (len_org != len)
2348                 len_org = 1;
2349         else
2350                 len_org = 0;
2351
2352         /* Physical address of this Tx command's header (not MAC header!),
2353          * within command buffer array. */
2354         txcmd_phys = pci_map_single(priv->pci_dev,
2355                                     out_cmd, sizeof(struct iwl_cmd),
2356                                     PCI_DMA_TODEVICE);
2357         pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
2358         pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
2359         /* Add buffer containing Tx command and MAC(!) header to TFD's
2360          * first entry */
2361         txcmd_phys += offsetof(struct iwl_cmd, hdr);
2362
2363         /* Add buffer containing Tx command and MAC(!) header to TFD's
2364          * first entry */
2365         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2366
2367         if (info->control.hw_key)
2368                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2369
2370         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2371          * if any (802.11 null frames have no payload). */
2372         len = skb->len - hdr_len;
2373         if (len) {
2374                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2375                                            len, PCI_DMA_TODEVICE);
2376                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2377         }
2378
2379         if (!len)
2380                 /* If there is no payload, then we use only one Tx buffer */
2381                 tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(1));
2382         else
2383                 /* Else use 2 buffers.
2384                  * Tell 3945 about any padding after MAC header */
2385                 tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(2) |
2386                         TFD_CTL_PAD_SET(U32_PAD(len)));
2387
2388         /* Total # bytes to be transmitted */
2389         len = (u16)skb->len;
2390         out_cmd->cmd.tx.len = cpu_to_le16(len);
2391
2392         /* TODO need this for burst mode later on */
2393         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
2394
2395         /* set is_hcca to 0; it probably will never be implemented */
2396         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2397
2398         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2399         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2400
2401         if (!ieee80211_has_morefrags(hdr->frame_control)) {
2402                 txq->need_update = 1;
2403                 if (qc)
2404                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
2405         } else {
2406                 wait_write_ptr = 1;
2407                 txq->need_update = 0;
2408         }
2409
2410         iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
2411                            sizeof(out_cmd->cmd.tx));
2412
2413         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2414                            ieee80211_hdrlen(fc));
2415
2416         /* Tell device the write index *just past* this latest filled TFD */
2417         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2418         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2419         spin_unlock_irqrestore(&priv->lock, flags);
2420
2421         if (rc)
2422                 return rc;
2423
2424         if ((iwl_queue_space(q) < q->high_mark)
2425             && priv->mac80211_registered) {
2426                 if (wait_write_ptr) {
2427                         spin_lock_irqsave(&priv->lock, flags);
2428                         txq->need_update = 1;
2429                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2430                         spin_unlock_irqrestore(&priv->lock, flags);
2431                 }
2432
2433                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2434         }
2435
2436         return 0;
2437
2438 drop_unlock:
2439         spin_unlock_irqrestore(&priv->lock, flags);
2440 drop:
2441         return -1;
2442 }
2443
2444 static void iwl3945_set_rate(struct iwl_priv *priv)
2445 {
2446         const struct ieee80211_supported_band *sband = NULL;
2447         struct ieee80211_rate *rate;
2448         int i;
2449
2450         sband = iwl_get_hw_mode(priv, priv->band);
2451         if (!sband) {
2452                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
2453                 return;
2454         }
2455
2456         priv->active_rate = 0;
2457         priv->active_rate_basic = 0;
2458
2459         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2460                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2461
2462         for (i = 0; i < sband->n_bitrates; i++) {
2463                 rate = &sband->bitrates[i];
2464                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2465                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2466                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2467                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2468                         priv->active_rate |= (1 << rate->hw_value);
2469                 }
2470         }
2471
2472         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2473                        priv->active_rate, priv->active_rate_basic);
2474
2475         /*
2476          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2477          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2478          * OFDM
2479          */
2480         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2481                 priv->staging39_rxon.cck_basic_rates =
2482                     ((priv->active_rate_basic &
2483                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2484         else
2485                 priv->staging39_rxon.cck_basic_rates =
2486                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2487
2488         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2489                 priv->staging39_rxon.ofdm_basic_rates =
2490                     ((priv->active_rate_basic &
2491                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2492                       IWL_FIRST_OFDM_RATE) & 0xFF;
2493         else
2494                 priv->staging39_rxon.ofdm_basic_rates =
2495                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2496 }
2497
2498 static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2499 {
2500         unsigned long flags;
2501
2502         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2503                 return;
2504
2505         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2506                           disable_radio ? "OFF" : "ON");
2507
2508         if (disable_radio) {
2509                 iwl3945_scan_cancel(priv);
2510                 /* FIXME: This is a workaround for AP */
2511                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2512                         spin_lock_irqsave(&priv->lock, flags);
2513                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2514                                     CSR_UCODE_SW_BIT_RFKILL);
2515                         spin_unlock_irqrestore(&priv->lock, flags);
2516                         iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2517                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2518                 }
2519                 return;
2520         }
2521
2522         spin_lock_irqsave(&priv->lock, flags);
2523         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2524
2525         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2526         spin_unlock_irqrestore(&priv->lock, flags);
2527
2528         /* wake up ucode */
2529         msleep(10);
2530
2531         spin_lock_irqsave(&priv->lock, flags);
2532         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2533         if (!iwl_grab_nic_access(priv))
2534                 iwl_release_nic_access(priv);
2535         spin_unlock_irqrestore(&priv->lock, flags);
2536
2537         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2538                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2539                                   "disabled by HW switch\n");
2540                 return;
2541         }
2542
2543         if (priv->is_open)
2544                 queue_work(priv->workqueue, &priv->restart);
2545         return;
2546 }
2547
2548 void iwl3945_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2549                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2550 {
2551         u16 fc =
2552             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2553
2554         if (priv->active39_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2555                 return;
2556
2557         if (!(fc & IEEE80211_FCTL_PROTECTED))
2558                 return;
2559
2560         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2561         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2562         case RX_RES_STATUS_SEC_TYPE_TKIP:
2563                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2564                     RX_RES_STATUS_BAD_ICV_MIC)
2565                         stats->flag |= RX_FLAG_MMIC_ERROR;
2566         case RX_RES_STATUS_SEC_TYPE_WEP:
2567         case RX_RES_STATUS_SEC_TYPE_CCMP:
2568                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2569                     RX_RES_STATUS_DECRYPT_OK) {
2570                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2571                         stats->flag |= RX_FLAG_DECRYPTED;
2572                 }
2573                 break;
2574
2575         default:
2576                 break;
2577         }
2578 }
2579
2580 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2581
2582 #include "iwl-spectrum.h"
2583
2584 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2585 #define BEACON_TIME_MASK_HIGH   0xFF000000
2586 #define TIME_UNIT               1024
2587
2588 /*
2589  * extended beacon time format
2590  * time in usec will be changed into a 32-bit value in 8:24 format
2591  * the high 1 byte is the beacon counts
2592  * the lower 3 bytes is the time in usec within one beacon interval
2593  */
2594
2595 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2596 {
2597         u32 quot;
2598         u32 rem;
2599         u32 interval = beacon_interval * 1024;
2600
2601         if (!interval || !usec)
2602                 return 0;
2603
2604         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2605         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2606
2607         return (quot << 24) + rem;
2608 }
2609
2610 /* base is usually what we get from ucode with each received frame,
2611  * the same as HW timer counter counting down
2612  */
2613
2614 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2615 {
2616         u32 base_low = base & BEACON_TIME_MASK_LOW;
2617         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2618         u32 interval = beacon_interval * TIME_UNIT;
2619         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2620             (addon & BEACON_TIME_MASK_HIGH);
2621
2622         if (base_low > addon_low)
2623                 res += base_low - addon_low;
2624         else if (base_low < addon_low) {
2625                 res += interval + base_low - addon_low;
2626                 res += (1 << 24);
2627         } else
2628                 res += (1 << 24);
2629
2630         return cpu_to_le32(res);
2631 }
2632
2633 static int iwl3945_get_measurement(struct iwl_priv *priv,
2634                                struct ieee80211_measurement_params *params,
2635                                u8 type)
2636 {
2637         struct iwl_spectrum_cmd spectrum;
2638         struct iwl_rx_packet *res;
2639         struct iwl_host_cmd cmd = {
2640                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2641                 .data = (void *)&spectrum,
2642                 .meta.flags = CMD_WANT_SKB,
2643         };
2644         u32 add_time = le64_to_cpu(params->start_time);
2645         int rc;
2646         int spectrum_resp_status;
2647         int duration = le16_to_cpu(params->duration);
2648
2649         if (iwl3945_is_associated(priv))
2650                 add_time =
2651                     iwl3945_usecs_to_beacons(
2652                         le64_to_cpu(params->start_time) - priv->last_tsf,
2653                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2654
2655         memset(&spectrum, 0, sizeof(spectrum));
2656
2657         spectrum.channel_count = cpu_to_le16(1);
2658         spectrum.flags =
2659             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2660         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2661         cmd.len = sizeof(spectrum);
2662         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2663
2664         if (iwl3945_is_associated(priv))
2665                 spectrum.start_time =
2666                     iwl3945_add_beacon_time(priv->last_beacon_time,
2667                                 add_time,
2668                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2669         else
2670                 spectrum.start_time = 0;
2671
2672         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2673         spectrum.channels[0].channel = params->channel;
2674         spectrum.channels[0].type = type;
2675         if (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK)
2676                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2677                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2678
2679         rc = iwl3945_send_cmd_sync(priv, &cmd);
2680         if (rc)
2681                 return rc;
2682
2683         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2684         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2685                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
2686                 rc = -EIO;
2687         }
2688
2689         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2690         switch (spectrum_resp_status) {
2691         case 0:         /* Command will be handled */
2692                 if (res->u.spectrum.id != 0xff) {
2693                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2694                                                 res->u.spectrum.id);
2695                         priv->measurement_status &= ~MEASUREMENT_READY;
2696                 }
2697                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2698                 rc = 0;
2699                 break;
2700
2701         case 1:         /* Command will not be handled */
2702                 rc = -EAGAIN;
2703                 break;
2704         }
2705
2706         dev_kfree_skb_any(cmd.meta.u.skb);
2707
2708         return rc;
2709 }
2710 #endif
2711
2712 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
2713                                struct iwl_rx_mem_buffer *rxb)
2714 {
2715         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2716         struct iwl_alive_resp *palive;
2717         struct delayed_work *pwork;
2718
2719         palive = &pkt->u.alive_frame;
2720
2721         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2722                        "0x%01X 0x%01X\n",
2723                        palive->is_valid, palive->ver_type,
2724                        palive->ver_subtype);
2725
2726         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2727                 IWL_DEBUG_INFO("Initialization Alive received.\n");
2728                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
2729                        sizeof(struct iwl_alive_resp));
2730                 pwork = &priv->init_alive_start;
2731         } else {
2732                 IWL_DEBUG_INFO("Runtime Alive received.\n");
2733                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2734                        sizeof(struct iwl_alive_resp));
2735                 pwork = &priv->alive_start;
2736                 iwl3945_disable_events(priv);
2737         }
2738
2739         /* We delay the ALIVE response by 5ms to
2740          * give the HW RF Kill time to activate... */
2741         if (palive->is_valid == UCODE_VALID_OK)
2742                 queue_delayed_work(priv->workqueue, pwork,
2743                                    msecs_to_jiffies(5));
2744         else
2745                 IWL_WARN(priv, "uCode did not respond OK.\n");
2746 }
2747
2748 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
2749                                  struct iwl_rx_mem_buffer *rxb)
2750 {
2751         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2752
2753         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2754         return;
2755 }
2756
2757 static void iwl3945_rx_reply_error(struct iwl_priv *priv,
2758                                struct iwl_rx_mem_buffer *rxb)
2759 {
2760         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2761
2762         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2763                 "seq 0x%04X ser 0x%08X\n",
2764                 le32_to_cpu(pkt->u.err_resp.error_type),
2765                 get_cmd_string(pkt->u.err_resp.cmd_id),
2766                 pkt->u.err_resp.cmd_id,
2767                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2768                 le32_to_cpu(pkt->u.err_resp.error_info));
2769 }
2770
2771 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2772
2773 static void iwl3945_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2774 {
2775         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2776         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active39_rxon;
2777         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
2778         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2779                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2780         rxon->channel = csa->channel;
2781         priv->staging39_rxon.channel = csa->channel;
2782 }
2783
2784 static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
2785                                           struct iwl_rx_mem_buffer *rxb)
2786 {
2787 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2788         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2789         struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
2790
2791         if (!report->state) {
2792                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2793                           "Spectrum Measure Notification: Start\n");
2794                 return;
2795         }
2796
2797         memcpy(&priv->measure_report, report, sizeof(*report));
2798         priv->measurement_status |= MEASUREMENT_READY;
2799 #endif
2800 }
2801
2802 static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
2803                                   struct iwl_rx_mem_buffer *rxb)
2804 {
2805 #ifdef CONFIG_IWL3945_DEBUG
2806         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2807         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2808         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2809                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2810 #endif
2811 }
2812
2813 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2814                                              struct iwl_rx_mem_buffer *rxb)
2815 {
2816         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2817         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2818                         "notification for %s:\n",
2819                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2820         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
2821                            le32_to_cpu(pkt->len));
2822 }
2823
2824 static void iwl3945_bg_beacon_update(struct work_struct *work)
2825 {
2826         struct iwl_priv *priv =
2827                 container_of(work, struct iwl_priv, beacon_update);
2828         struct sk_buff *beacon;
2829
2830         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2831         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2832
2833         if (!beacon) {
2834                 IWL_ERR(priv, "update beacon failed\n");
2835                 return;
2836         }
2837
2838         mutex_lock(&priv->mutex);
2839         /* new beacon skb is allocated every time; dispose previous.*/
2840         if (priv->ibss_beacon)
2841                 dev_kfree_skb(priv->ibss_beacon);
2842
2843         priv->ibss_beacon = beacon;
2844         mutex_unlock(&priv->mutex);
2845
2846         iwl3945_send_beacon_cmd(priv);
2847 }
2848
2849 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
2850                                 struct iwl_rx_mem_buffer *rxb)
2851 {
2852 #ifdef CONFIG_IWL3945_DEBUG
2853         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2854         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
2855         u8 rate = beacon->beacon_notify_hdr.rate;
2856
2857         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2858                 "tsf %d %d rate %d\n",
2859                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2860                 beacon->beacon_notify_hdr.failure_frame,
2861                 le32_to_cpu(beacon->ibss_mgr_status),
2862                 le32_to_cpu(beacon->high_tsf),
2863                 le32_to_cpu(beacon->low_tsf), rate);
2864 #endif
2865
2866         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2867             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2868                 queue_work(priv->workqueue, &priv->beacon_update);
2869 }
2870
2871 /* Service response to REPLY_SCAN_CMD (0x80) */
2872 static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
2873                               struct iwl_rx_mem_buffer *rxb)
2874 {
2875 #ifdef CONFIG_IWL3945_DEBUG
2876         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2877         struct iwl_scanreq_notification *notif =
2878             (struct iwl_scanreq_notification *)pkt->u.raw;
2879
2880         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2881 #endif
2882 }
2883
2884 /* Service SCAN_START_NOTIFICATION (0x82) */
2885 static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
2886                                     struct iwl_rx_mem_buffer *rxb)
2887 {
2888         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2889         struct iwl_scanstart_notification *notif =
2890             (struct iwl_scanstart_notification *)pkt->u.raw;
2891         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2892         IWL_DEBUG_SCAN("Scan start: "
2893                        "%d [802.11%s] "
2894                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2895                        notif->channel,
2896                        notif->band ? "bg" : "a",
2897                        notif->tsf_high,
2898                        notif->tsf_low, notif->status, notif->beacon_timer);
2899 }
2900
2901 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2902 static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
2903                                       struct iwl_rx_mem_buffer *rxb)
2904 {
2905         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2906         struct iwl_scanresults_notification *notif =
2907             (struct iwl_scanresults_notification *)pkt->u.raw;
2908
2909         IWL_DEBUG_SCAN("Scan ch.res: "
2910                        "%d [802.11%s] "
2911                        "(TSF: 0x%08X:%08X) - %d "
2912                        "elapsed=%lu usec (%dms since last)\n",
2913                        notif->channel,
2914                        notif->band ? "bg" : "a",
2915                        le32_to_cpu(notif->tsf_high),
2916                        le32_to_cpu(notif->tsf_low),
2917                        le32_to_cpu(notif->statistics[0]),
2918                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2919                        jiffies_to_msecs(elapsed_jiffies
2920                                         (priv->last_scan_jiffies, jiffies)));
2921
2922         priv->last_scan_jiffies = jiffies;
2923         priv->next_scan_jiffies = 0;
2924 }
2925
2926 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2927 static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
2928                                        struct iwl_rx_mem_buffer *rxb)
2929 {
2930         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2931         struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2932
2933         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2934                        scan_notif->scanned_channels,
2935                        scan_notif->tsf_low,
2936                        scan_notif->tsf_high, scan_notif->status);
2937
2938         /* The HW is no longer scanning */
2939         clear_bit(STATUS_SCAN_HW, &priv->status);
2940
2941         /* The scan completion notification came in, so kill that timer... */
2942         cancel_delayed_work(&priv->scan_check);
2943
2944         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2945                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
2946                                                         "2.4" : "5.2",
2947                        jiffies_to_msecs(elapsed_jiffies
2948                                         (priv->scan_pass_start, jiffies)));
2949
2950         /* Remove this scanned band from the list of pending
2951          * bands to scan, band G precedes A in order of scanning
2952          * as seen in iwl3945_bg_request_scan */
2953         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
2954                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
2955         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
2956                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
2957
2958         /* If a request to abort was given, or the scan did not succeed
2959          * then we reset the scan state machine and terminate,
2960          * re-queuing another scan if one has been requested */
2961         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2962                 IWL_DEBUG_INFO("Aborted scan completed.\n");
2963                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2964         } else {
2965                 /* If there are more bands on this scan pass reschedule */
2966                 if (priv->scan_bands > 0)
2967                         goto reschedule;
2968         }
2969
2970         priv->last_scan_jiffies = jiffies;
2971         priv->next_scan_jiffies = 0;
2972         IWL_DEBUG_INFO("Setting scan to off\n");
2973
2974         clear_bit(STATUS_SCANNING, &priv->status);
2975
2976         IWL_DEBUG_INFO("Scan took %dms\n",
2977                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2978
2979         queue_work(priv->workqueue, &priv->scan_completed);
2980
2981         return;
2982
2983 reschedule:
2984         priv->scan_pass_start = jiffies;
2985         queue_work(priv->workqueue, &priv->request_scan);
2986 }
2987
2988 /* Handle notification from uCode that card's power state is changing
2989  * due to software, hardware, or critical temperature RFKILL */
2990 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
2991                                     struct iwl_rx_mem_buffer *rxb)
2992 {
2993         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2994         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2995         unsigned long status = priv->status;
2996
2997         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2998                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2999                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3000
3001         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3002                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3003
3004         if (flags & HW_CARD_DISABLED)
3005                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3006         else
3007                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3008
3009
3010         if (flags & SW_CARD_DISABLED)
3011                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3012         else
3013                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3014
3015         iwl3945_scan_cancel(priv);
3016
3017         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3018              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3019             (test_bit(STATUS_RF_KILL_SW, &status) !=
3020              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3021                 queue_work(priv->workqueue, &priv->rf_kill);
3022         else
3023                 wake_up_interruptible(&priv->wait_command_queue);
3024 }
3025
3026 /**
3027  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3028  *
3029  * Setup the RX handlers for each of the reply types sent from the uCode
3030  * to the host.
3031  *
3032  * This function chains into the hardware specific files for them to setup
3033  * any hardware specific handlers as well.
3034  */
3035 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
3036 {
3037         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3038         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3039         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3040         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3041         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3042             iwl3945_rx_spectrum_measure_notif;
3043         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3044         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3045             iwl3945_rx_pm_debug_statistics_notif;
3046         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3047
3048         /*
3049          * The same handler is used for both the REPLY to a discrete
3050          * statistics request from the host as well as for the periodic
3051          * statistics notifications (after received beacons) from the uCode.
3052          */
3053         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3054         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3055
3056         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3057         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3058         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3059             iwl3945_rx_scan_results_notif;
3060         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3061             iwl3945_rx_scan_complete_notif;
3062         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3063
3064         /* Set up hardware specific Rx handlers */
3065         iwl3945_hw_rx_handler_setup(priv);
3066 }
3067
3068 /**
3069  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3070  * When FW advances 'R' index, all entries between old and new 'R' index
3071  * need to be reclaimed.
3072  */
3073 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
3074                                       int txq_id, int index)
3075 {
3076         struct iwl_tx_queue *txq = &priv->txq[txq_id];
3077         struct iwl_queue *q = &txq->q;
3078         int nfreed = 0;
3079
3080         if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3081                 IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
3082                           "is out of range [0-%d] %d %d.\n", txq_id,
3083                           index, q->n_bd, q->write_ptr, q->read_ptr);
3084                 return;
3085         }
3086
3087         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3088                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3089                 if (nfreed > 1) {
3090                         IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
3091                                         q->write_ptr, q->read_ptr);
3092                         queue_work(priv->workqueue, &priv->restart);
3093                         break;
3094                 }
3095                 nfreed++;
3096         }
3097 }
3098
3099
3100 /**
3101  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3102  * @rxb: Rx buffer to reclaim
3103  *
3104  * If an Rx buffer has an async callback associated with it the callback
3105  * will be executed.  The attached skb (if present) will only be freed
3106  * if the callback returns 1
3107  */
3108 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
3109                                 struct iwl_rx_mem_buffer *rxb)
3110 {
3111         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3112         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3113         int txq_id = SEQ_TO_QUEUE(sequence);
3114         int index = SEQ_TO_INDEX(sequence);
3115         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
3116         int cmd_index;
3117         struct iwl_cmd *cmd;
3118
3119         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3120
3121         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3122         cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3123
3124         /* Input error checking is done when commands are added to queue. */
3125         if (cmd->meta.flags & CMD_WANT_SKB) {
3126                 cmd->meta.source->u.skb = rxb->skb;
3127                 rxb->skb = NULL;
3128         } else if (cmd->meta.u.callback &&
3129                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3130                 rxb->skb = NULL;
3131
3132         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
3133
3134         if (!(cmd->meta.flags & CMD_ASYNC)) {
3135                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3136                 wake_up_interruptible(&priv->wait_command_queue);
3137         }
3138 }
3139
3140 /************************** RX-FUNCTIONS ****************************/
3141 /*
3142  * Rx theory of operation
3143  *
3144  * The host allocates 32 DMA target addresses and passes the host address
3145  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3146  * 0 to 31
3147  *
3148  * Rx Queue Indexes
3149  * The host/firmware share two index registers for managing the Rx buffers.
3150  *
3151  * The READ index maps to the first position that the firmware may be writing
3152  * to -- the driver can read up to (but not including) this position and get
3153  * good data.
3154  * The READ index is managed by the firmware once the card is enabled.
3155  *
3156  * The WRITE index maps to the last position the driver has read from -- the
3157  * position preceding WRITE is the last slot the firmware can place a packet.
3158  *
3159  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3160  * WRITE = READ.
3161  *
3162  * During initialization, the host sets up the READ queue position to the first
3163  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3164  *
3165  * When the firmware places a packet in a buffer, it will advance the READ index
3166  * and fire the RX interrupt.  The driver can then query the READ index and
3167  * process as many packets as possible, moving the WRITE index forward as it
3168  * resets the Rx queue buffers with new memory.
3169  *
3170  * The management in the driver is as follows:
3171  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3172  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3173  *   to replenish the iwl->rxq->rx_free.
3174  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3175  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3176  *   'processed' and 'read' driver indexes as well)
3177  * + A received packet is processed and handed to the kernel network stack,
3178  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3179  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3180  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3181  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3182  *   were enough free buffers and RX_STALLED is set it is cleared.
3183  *
3184  *
3185  * Driver sequence:
3186  *
3187  * iwl3945_rx_queue_alloc()   Allocates rx_free
3188  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3189  *                            iwl3945_rx_queue_restock
3190  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3191  *                            queue, updates firmware pointers, and updates
3192  *                            the WRITE index.  If insufficient rx_free buffers
3193  *                            are available, schedules iwl3945_rx_replenish
3194  *
3195  * -- enable interrupts --
3196  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
3197  *                            READ INDEX, detaching the SKB from the pool.
3198  *                            Moves the packet buffer from queue to rx_used.
3199  *                            Calls iwl3945_rx_queue_restock to refill any empty
3200  *                            slots.
3201  * ...
3202  *
3203  */
3204
3205 /**
3206  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3207  */
3208 static int iwl3945_rx_queue_space(const struct iwl_rx_queue *q)
3209 {
3210         int s = q->read - q->write;
3211         if (s <= 0)
3212                 s += RX_QUEUE_SIZE;
3213         /* keep some buffer to not confuse full and empty queue */
3214         s -= 2;
3215         if (s < 0)
3216                 s = 0;
3217         return s;
3218 }
3219
3220 /**
3221  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3222  */
3223 int iwl3945_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
3224 {
3225         u32 reg = 0;
3226         int rc = 0;
3227         unsigned long flags;
3228
3229         spin_lock_irqsave(&q->lock, flags);
3230
3231         if (q->need_update == 0)
3232                 goto exit_unlock;
3233
3234         /* If power-saving is in use, make sure device is awake */
3235         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3236                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3237
3238                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3239                         iwl_set_bit(priv, CSR_GP_CNTRL,
3240                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3241                         goto exit_unlock;
3242                 }
3243
3244                 rc = iwl_grab_nic_access(priv);
3245                 if (rc)
3246                         goto exit_unlock;
3247
3248                 /* Device expects a multiple of 8 */
3249                 iwl_write_direct32(priv, FH39_RSCSR_CHNL0_WPTR,
3250                                      q->write & ~0x7);
3251                 iwl_release_nic_access(priv);
3252
3253         /* Else device is assumed to be awake */
3254         } else
3255                 /* Device expects a multiple of 8 */
3256                 iwl_write32(priv, FH39_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3257
3258
3259         q->need_update = 0;
3260
3261  exit_unlock:
3262         spin_unlock_irqrestore(&q->lock, flags);
3263         return rc;
3264 }
3265
3266 /**
3267  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3268  */
3269 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
3270                                           dma_addr_t dma_addr)
3271 {
3272         return cpu_to_le32((u32)dma_addr);
3273 }
3274
3275 /**
3276  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3277  *
3278  * If there are slots in the RX queue that need to be restocked,
3279  * and we have free pre-allocated buffers, fill the ranks as much
3280  * as we can, pulling from rx_free.
3281  *
3282  * This moves the 'write' index forward to catch up with 'processed', and
3283  * also updates the memory address in the firmware to reference the new
3284  * target buffer.
3285  */
3286 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
3287 {
3288         struct iwl_rx_queue *rxq = &priv->rxq;
3289         struct list_head *element;
3290         struct iwl_rx_mem_buffer *rxb;
3291         unsigned long flags;
3292         int write, rc;
3293
3294         spin_lock_irqsave(&rxq->lock, flags);
3295         write = rxq->write & ~0x7;
3296         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3297                 /* Get next free Rx buffer, remove from free list */
3298                 element = rxq->rx_free.next;
3299                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
3300                 list_del(element);
3301
3302                 /* Point to Rx buffer via next RBD in circular buffer */
3303                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
3304                 rxq->queue[rxq->write] = rxb;
3305                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3306                 rxq->free_count--;
3307         }
3308         spin_unlock_irqrestore(&rxq->lock, flags);
3309         /* If the pre-allocated buffer pool is dropping low, schedule to
3310          * refill it */
3311         if (rxq->free_count <= RX_LOW_WATERMARK)
3312                 queue_work(priv->workqueue, &priv->rx_replenish);
3313
3314
3315         /* If we've added more space for the firmware to place data, tell it.
3316          * Increment device's write pointer in multiples of 8. */
3317         if ((write != (rxq->write & ~0x7))
3318             || (abs(rxq->write - rxq->read) > 7)) {
3319                 spin_lock_irqsave(&rxq->lock, flags);
3320                 rxq->need_update = 1;
3321                 spin_unlock_irqrestore(&rxq->lock, flags);
3322                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3323                 if (rc)
3324                         return rc;
3325         }
3326
3327         return 0;
3328 }
3329
3330 /**
3331  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3332  *
3333  * When moving to rx_free an SKB is allocated for the slot.
3334  *
3335  * Also restock the Rx queue via iwl3945_rx_queue_restock.
3336  * This is called as a scheduled work item (except for during initialization)
3337  */
3338 static void iwl3945_rx_allocate(struct iwl_priv *priv)
3339 {
3340         struct iwl_rx_queue *rxq = &priv->rxq;
3341         struct list_head *element;
3342         struct iwl_rx_mem_buffer *rxb;
3343         unsigned long flags;
3344         spin_lock_irqsave(&rxq->lock, flags);
3345         while (!list_empty(&rxq->rx_used)) {
3346                 element = rxq->rx_used.next;
3347                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
3348
3349                 /* Alloc a new receive buffer */
3350                 rxb->skb =
3351                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3352                 if (!rxb->skb) {
3353                         if (net_ratelimit())
3354                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
3355                         /* We don't reschedule replenish work here -- we will
3356                          * call the restock method and if it still needs
3357                          * more buffers it will schedule replenish */
3358                         break;
3359                 }
3360
3361                 /* If radiotap head is required, reserve some headroom here.
3362                  * The physical head count is a variable rx_stats->phy_count.
3363                  * We reserve 4 bytes here. Plus these extra bytes, the
3364                  * headroom of the physical head should be enough for the
3365                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3366                  */
3367                 skb_reserve(rxb->skb, 4);
3368
3369                 priv->alloc_rxb_skb++;
3370                 list_del(element);
3371
3372                 /* Get physical address of RB/SKB */
3373                 rxb->real_dma_addr =
3374                     pci_map_single(priv->pci_dev, rxb->skb->data,
3375                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3376                 list_add_tail(&rxb->list, &rxq->rx_free);
3377                 rxq->free_count++;
3378         }
3379         spin_unlock_irqrestore(&rxq->lock, flags);
3380 }
3381
3382 /*
3383  * this should be called while priv->lock is locked
3384  */
3385 static void __iwl3945_rx_replenish(void *data)
3386 {
3387         struct iwl_priv *priv = data;
3388
3389         iwl3945_rx_allocate(priv);
3390         iwl3945_rx_queue_restock(priv);
3391 }
3392
3393
3394 void iwl3945_rx_replenish(void *data)
3395 {
3396         struct iwl_priv *priv = data;
3397         unsigned long flags;
3398
3399         iwl3945_rx_allocate(priv);
3400
3401         spin_lock_irqsave(&priv->lock, flags);
3402         iwl3945_rx_queue_restock(priv);
3403         spin_unlock_irqrestore(&priv->lock, flags);
3404 }
3405
3406 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3407  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3408  * This free routine walks the list of POOL entries and if SKB is set to
3409  * non NULL it is unmapped and freed
3410  */
3411 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
3412 {
3413         int i;
3414         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3415                 if (rxq->pool[i].skb != NULL) {
3416                         pci_unmap_single(priv->pci_dev,
3417                                          rxq->pool[i].real_dma_addr,
3418                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3419                         dev_kfree_skb(rxq->pool[i].skb);
3420                 }
3421         }
3422
3423         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3424                             rxq->dma_addr);
3425         rxq->bd = NULL;
3426 }
3427
3428 int iwl3945_rx_queue_alloc(struct iwl_priv *priv)
3429 {
3430         struct iwl_rx_queue *rxq = &priv->rxq;
3431         struct pci_dev *dev = priv->pci_dev;
3432         int i;
3433
3434         spin_lock_init(&rxq->lock);
3435         INIT_LIST_HEAD(&rxq->rx_free);
3436         INIT_LIST_HEAD(&rxq->rx_used);
3437
3438         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3439         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3440         if (!rxq->bd)
3441                 return -ENOMEM;
3442
3443         /* Fill the rx_used queue with _all_ of the Rx buffers */
3444         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3445                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3446
3447         /* Set us so that we have processed and used all buffers, but have
3448          * not restocked the Rx queue with fresh buffers */
3449         rxq->read = rxq->write = 0;
3450         rxq->free_count = 0;
3451         rxq->need_update = 0;
3452         return 0;
3453 }
3454
3455 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
3456 {
3457         unsigned long flags;
3458         int i;
3459         spin_lock_irqsave(&rxq->lock, flags);
3460         INIT_LIST_HEAD(&rxq->rx_free);
3461         INIT_LIST_HEAD(&rxq->rx_used);
3462         /* Fill the rx_used queue with _all_ of the Rx buffers */
3463         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3464                 /* In the reset function, these buffers may have been allocated
3465                  * to an SKB, so we need to unmap and free potential storage */
3466                 if (rxq->pool[i].skb != NULL) {
3467                         pci_unmap_single(priv->pci_dev,
3468                                          rxq->pool[i].real_dma_addr,
3469                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3470                         priv->alloc_rxb_skb--;
3471                         dev_kfree_skb(rxq->pool[i].skb);
3472                         rxq->pool[i].skb = NULL;
3473                 }
3474                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3475         }
3476
3477         /* Set us so that we have processed and used all buffers, but have
3478          * not restocked the Rx queue with fresh buffers */
3479         rxq->read = rxq->write = 0;
3480         rxq->free_count = 0;
3481         spin_unlock_irqrestore(&rxq->lock, flags);
3482 }
3483
3484 /* Convert linear signal-to-noise ratio into dB */
3485 static u8 ratio2dB[100] = {
3486 /*       0   1   2   3   4   5   6   7   8   9 */
3487          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3488         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3489         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3490         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3491         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3492         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3493         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3494         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3495         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3496         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3497 };
3498
3499 /* Calculates a relative dB value from a ratio of linear
3500  *   (i.e. not dB) signal levels.
3501  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3502 int iwl3945_calc_db_from_ratio(int sig_ratio)
3503 {
3504         /* 1000:1 or higher just report as 60 dB */
3505         if (sig_ratio >= 1000)
3506                 return 60;
3507
3508         /* 100:1 or higher, divide by 10 and use table,
3509          *   add 20 dB to make up for divide by 10 */
3510         if (sig_ratio >= 100)
3511                 return 20 + (int)ratio2dB[sig_ratio/10];
3512
3513         /* We shouldn't see this */
3514         if (sig_ratio < 1)
3515                 return 0;
3516
3517         /* Use table for ratios 1:1 - 99:1 */
3518         return (int)ratio2dB[sig_ratio];
3519 }
3520
3521 #define PERFECT_RSSI (-20) /* dBm */
3522 #define WORST_RSSI (-95)   /* dBm */
3523 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3524
3525 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3526  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3527  *   about formulas used below. */
3528 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3529 {
3530         int sig_qual;
3531         int degradation = PERFECT_RSSI - rssi_dbm;
3532
3533         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3534          * as indicator; formula is (signal dbm - noise dbm).
3535          * SNR at or above 40 is a great signal (100%).
3536          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3537          * Weakest usable signal is usually 10 - 15 dB SNR. */
3538         if (noise_dbm) {
3539                 if (rssi_dbm - noise_dbm >= 40)
3540                         return 100;
3541                 else if (rssi_dbm < noise_dbm)
3542                         return 0;
3543                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3544
3545         /* Else use just the signal level.
3546          * This formula is a least squares fit of data points collected and
3547          *   compared with a reference system that had a percentage (%) display
3548          *   for signal quality. */
3549         } else
3550                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3551                             (15 * RSSI_RANGE + 62 * degradation)) /
3552                            (RSSI_RANGE * RSSI_RANGE);
3553
3554         if (sig_qual > 100)
3555                 sig_qual = 100;
3556         else if (sig_qual < 1)
3557                 sig_qual = 0;
3558
3559         return sig_qual;
3560 }
3561
3562 /**
3563  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3564  *
3565  * Uses the priv->rx_handlers callback function array to invoke
3566  * the appropriate handlers, including command responses,
3567  * frame-received notifications, and other notifications.
3568  */
3569 static void iwl3945_rx_handle(struct iwl_priv *priv)
3570 {
3571         struct iwl_rx_mem_buffer *rxb;
3572         struct iwl_rx_packet *pkt;
3573         struct iwl_rx_queue *rxq = &priv->rxq;
3574         u32 r, i;
3575         int reclaim;
3576         unsigned long flags;
3577         u8 fill_rx = 0;
3578         u32 count = 8;
3579
3580         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3581          * buffer that the driver may process (last buffer filled by ucode). */
3582         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
3583         i = rxq->read;
3584
3585         if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3586                 fill_rx = 1;
3587         /* Rx interrupt, but nothing sent from uCode */
3588         if (i == r)
3589                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3590
3591         while (i != r) {
3592                 rxb = rxq->queue[i];
3593
3594                 /* If an RXB doesn't have a Rx queue slot associated with it,
3595                  * then a bug has been introduced in the queue refilling
3596                  * routines -- catch it here */
3597                 BUG_ON(rxb == NULL);
3598
3599                 rxq->queue[i] = NULL;
3600
3601                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
3602                                             IWL_RX_BUF_SIZE,
3603                                             PCI_DMA_FROMDEVICE);
3604                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3605
3606                 /* Reclaim a command buffer only if this packet is a response
3607                  *   to a (driver-originated) command.
3608                  * If the packet (e.g. Rx frame) originated from uCode,
3609                  *   there is no command buffer to reclaim.
3610                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3611                  *   but apparently a few don't get set; catch them here. */
3612                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3613                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3614                         (pkt->hdr.cmd != REPLY_TX);
3615
3616                 /* Based on type of command response or notification,
3617                  *   handle those that need handling via function in
3618                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
3619                 if (priv->rx_handlers[pkt->hdr.cmd]) {
3620                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3621                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3622                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3623                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3624                 } else {
3625                         /* No handling needed */
3626                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3627                                 "r %d i %d No handler needed for %s, 0x%02x\n",
3628                                 r, i, get_cmd_string(pkt->hdr.cmd),
3629                                 pkt->hdr.cmd);
3630                 }
3631
3632                 if (reclaim) {
3633                         /* Invoke any callbacks, transfer the skb to caller, and
3634                          * fire off the (possibly) blocking iwl3945_send_cmd()
3635                          * as we reclaim the driver command queue */
3636                         if (rxb && rxb->skb)
3637                                 iwl3945_tx_cmd_complete(priv, rxb);
3638                         else
3639                                 IWL_WARN(priv, "Claim null rxb?\n");
3640                 }
3641
3642                 /* For now we just don't re-use anything.  We can tweak this
3643                  * later to try and re-use notification packets and SKBs that
3644                  * fail to Rx correctly */
3645                 if (rxb->skb != NULL) {
3646                         priv->alloc_rxb_skb--;
3647                         dev_kfree_skb_any(rxb->skb);
3648                         rxb->skb = NULL;
3649                 }
3650
3651                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
3652                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3653                 spin_lock_irqsave(&rxq->lock, flags);
3654                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3655                 spin_unlock_irqrestore(&rxq->lock, flags);
3656                 i = (i + 1) & RX_QUEUE_MASK;
3657                 /* If there are a lot of unused frames,
3658                  * restock the Rx queue so ucode won't assert. */
3659                 if (fill_rx) {
3660                         count++;
3661                         if (count >= 8) {
3662                                 priv->rxq.read = i;
3663                                 __iwl3945_rx_replenish(priv);
3664                                 count = 0;
3665                         }
3666                 }
3667         }
3668
3669         /* Backtrack one entry */
3670         priv->rxq.read = i;
3671         iwl3945_rx_queue_restock(priv);
3672 }
3673
3674 /**
3675  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
3676  */
3677 static int iwl3945_tx_queue_update_write_ptr(struct iwl_priv *priv,
3678                                   struct iwl_tx_queue *txq)
3679 {
3680         u32 reg = 0;
3681         int rc = 0;
3682         int txq_id = txq->q.id;
3683
3684         if (txq->need_update == 0)
3685                 return rc;
3686
3687         /* if we're trying to save power */
3688         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3689                 /* wake up nic if it's powered down ...
3690                  * uCode will wake up, and interrupt us again, so next
3691                  * time we'll skip this part. */
3692                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3693
3694                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3695                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3696                         iwl_set_bit(priv, CSR_GP_CNTRL,
3697                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3698                         return rc;
3699                 }
3700
3701                 /* restore this queue's parameters in nic hardware. */
3702                 rc = iwl_grab_nic_access(priv);
3703                 if (rc)
3704                         return rc;
3705                 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3706                                      txq->q.write_ptr | (txq_id << 8));
3707                 iwl_release_nic_access(priv);
3708
3709         /* else not in power-save mode, uCode will never sleep when we're
3710          * trying to tx (during RFKILL, we're not trying to tx). */
3711         } else
3712                 iwl_write32(priv, HBUS_TARG_WRPTR,
3713                             txq->q.write_ptr | (txq_id << 8));
3714
3715         txq->need_update = 0;
3716
3717         return rc;
3718 }
3719
3720 #ifdef CONFIG_IWL3945_DEBUG
3721 static void iwl3945_print_rx_config_cmd(struct iwl_priv *priv,
3722                                         struct iwl3945_rxon_cmd *rxon)
3723 {
3724         IWL_DEBUG_RADIO("RX CONFIG:\n");
3725         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3726         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3727         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3728         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3729                         le32_to_cpu(rxon->filter_flags));
3730         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3731         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3732                         rxon->ofdm_basic_rates);
3733         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3734         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3735         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
3736         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3737 }
3738 #endif
3739
3740 static void iwl3945_enable_interrupts(struct iwl_priv *priv)
3741 {
3742         IWL_DEBUG_ISR("Enabling interrupts\n");
3743         set_bit(STATUS_INT_ENABLED, &priv->status);
3744         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3745 }
3746
3747
3748 /* call this function to flush any scheduled tasklet */
3749 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3750 {
3751         /* wait to make sure we flush pending tasklet*/
3752         synchronize_irq(priv->pci_dev->irq);
3753         tasklet_kill(&priv->irq_tasklet);
3754 }
3755
3756
3757 static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
3758 {
3759         clear_bit(STATUS_INT_ENABLED, &priv->status);
3760
3761         /* disable interrupts from uCode/NIC to host */
3762         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3763
3764         /* acknowledge/clear/reset any interrupts still pending
3765          * from uCode or flow handler (Rx/Tx DMA) */
3766         iwl_write32(priv, CSR_INT, 0xffffffff);
3767         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3768         IWL_DEBUG_ISR("Disabled interrupts\n");
3769 }
3770
3771 static const char *desc_lookup(int i)
3772 {
3773         switch (i) {
3774         case 1:
3775                 return "FAIL";
3776         case 2:
3777                 return "BAD_PARAM";
3778         case 3:
3779                 return "BAD_CHECKSUM";
3780         case 4:
3781                 return "NMI_INTERRUPT";
3782         case 5:
3783                 return "SYSASSERT";
3784         case 6:
3785                 return "FATAL_ERROR";
3786         }
3787
3788         return "UNKNOWN";
3789 }
3790
3791 #define ERROR_START_OFFSET  (1 * sizeof(u32))
3792 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
3793
3794 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
3795 {
3796         u32 i;
3797         u32 desc, time, count, base, data1;
3798         u32 blink1, blink2, ilink1, ilink2;
3799         int rc;
3800
3801         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3802
3803         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3804                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
3805                 return;
3806         }
3807
3808         rc = iwl_grab_nic_access(priv);
3809         if (rc) {
3810                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
3811                 return;
3812         }
3813
3814         count = iwl_read_targ_mem(priv, base);
3815
3816         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3817                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
3818                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
3819                         priv->status, count);
3820         }
3821
3822         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
3823                   "ilink1  nmiPC   Line\n");
3824         for (i = ERROR_START_OFFSET;
3825              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
3826              i += ERROR_ELEM_SIZE) {
3827                 desc = iwl_read_targ_mem(priv, base + i);
3828                 time =
3829                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
3830                 blink1 =
3831                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
3832                 blink2 =
3833                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
3834                 ilink1 =
3835                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
3836                 ilink2 =
3837                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
3838                 data1 =
3839                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
3840
3841                 IWL_ERR(priv,
3842                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
3843                         desc_lookup(desc), desc, time, blink1, blink2,
3844                         ilink1, ilink2, data1);
3845         }
3846
3847         iwl_release_nic_access(priv);
3848
3849 }
3850
3851 #define EVENT_START_OFFSET  (6 * sizeof(u32))
3852
3853 /**
3854  * iwl3945_print_event_log - Dump error event log to syslog
3855  *
3856  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3857  */
3858 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
3859                                 u32 num_events, u32 mode)
3860 {
3861         u32 i;
3862         u32 base;       /* SRAM byte address of event log header */
3863         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3864         u32 ptr;        /* SRAM byte address of log data */
3865         u32 ev, time, data; /* event log data */
3866
3867         if (num_events == 0)
3868                 return;
3869
3870         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3871
3872         if (mode == 0)
3873                 event_size = 2 * sizeof(u32);
3874         else
3875                 event_size = 3 * sizeof(u32);
3876
3877         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3878
3879         /* "time" is actually "data" for mode 0 (no timestamp).
3880          * place event id # at far right for easier visual parsing. */
3881         for (i = 0; i < num_events; i++) {
3882                 ev = iwl_read_targ_mem(priv, ptr);
3883                 ptr += sizeof(u32);
3884                 time = iwl_read_targ_mem(priv, ptr);
3885                 ptr += sizeof(u32);
3886                 if (mode == 0) {
3887                         /* data, ev */
3888                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
3889                 } else {
3890                         data = iwl_read_targ_mem(priv, ptr);
3891                         ptr += sizeof(u32);
3892                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
3893                 }
3894         }
3895 }
3896
3897 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
3898 {
3899         int rc;
3900         u32 base;       /* SRAM byte address of event log header */
3901         u32 capacity;   /* event log capacity in # entries */
3902         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
3903         u32 num_wraps;  /* # times uCode wrapped to top of log */
3904         u32 next_entry; /* index of next entry to be written by uCode */
3905         u32 size;       /* # entries that we'll print */
3906
3907         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3908         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3909                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
3910                 return;
3911         }
3912
3913         rc = iwl_grab_nic_access(priv);
3914         if (rc) {
3915                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
3916                 return;
3917         }
3918
3919         /* event log header */
3920         capacity = iwl_read_targ_mem(priv, base);
3921         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3922         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3923         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
3924
3925         size = num_wraps ? capacity : next_entry;
3926
3927         /* bail out if nothing in log */
3928         if (size == 0) {
3929                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
3930                 iwl_release_nic_access(priv);
3931                 return;
3932         }
3933
3934         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
3935                   size, num_wraps);
3936
3937         /* if uCode has wrapped back to top of log, start at the oldest entry,
3938          * i.e the next one that uCode would fill. */
3939         if (num_wraps)
3940                 iwl3945_print_event_log(priv, next_entry,
3941                                     capacity - next_entry, mode);
3942
3943         /* (then/else) start at top of log */
3944         iwl3945_print_event_log(priv, 0, next_entry, mode);
3945
3946         iwl_release_nic_access(priv);
3947 }
3948
3949 /**
3950  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
3951  */
3952 static void iwl3945_irq_handle_error(struct iwl_priv *priv)
3953 {
3954         /* Set the FW error flag -- cleared on iwl3945_down */
3955         set_bit(STATUS_FW_ERROR, &priv->status);
3956
3957         /* Cancel currently queued command. */
3958         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3959
3960 #ifdef CONFIG_IWL3945_DEBUG
3961         if (priv->debug_level & IWL_DL_FW_ERRORS) {
3962                 iwl3945_dump_nic_error_log(priv);
3963                 iwl3945_dump_nic_event_log(priv);
3964                 iwl3945_print_rx_config_cmd(priv, &priv->staging39_rxon);
3965         }
3966 #endif
3967
3968         wake_up_interruptible(&priv->wait_command_queue);
3969
3970         /* Keep the restart process from trying to send host
3971          * commands by clearing the INIT status bit */
3972         clear_bit(STATUS_READY, &priv->status);
3973
3974         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3975                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
3976                           "Restarting adapter due to uCode error.\n");
3977
3978                 if (iwl3945_is_associated(priv)) {
3979                         memcpy(&priv->recovery39_rxon, &priv->active39_rxon,
3980                                sizeof(priv->recovery39_rxon));
3981                         priv->error_recovering = 1;
3982                 }
3983                 queue_work(priv->workqueue, &priv->restart);
3984         }
3985 }
3986
3987 static void iwl3945_error_recovery(struct iwl_priv *priv)
3988 {
3989         unsigned long flags;
3990
3991         memcpy(&priv->staging39_rxon, &priv->recovery39_rxon,
3992                sizeof(priv->staging39_rxon));
3993         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3994         iwl3945_commit_rxon(priv);
3995
3996         iwl3945_add_station(priv, priv->bssid, 1, 0);
3997
3998         spin_lock_irqsave(&priv->lock, flags);
3999         priv->assoc_id = le16_to_cpu(priv->staging39_rxon.assoc_id);
4000         priv->error_recovering = 0;
4001         spin_unlock_irqrestore(&priv->lock, flags);
4002 }
4003
4004 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
4005 {
4006         u32 inta, handled = 0;
4007         u32 inta_fh;
4008         unsigned long flags;
4009 #ifdef CONFIG_IWL3945_DEBUG
4010         u32 inta_mask;
4011 #endif
4012
4013         spin_lock_irqsave(&priv->lock, flags);
4014
4015         /* Ack/clear/reset pending uCode interrupts.
4016          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4017          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4018         inta = iwl_read32(priv, CSR_INT);
4019         iwl_write32(priv, CSR_INT, inta);
4020
4021         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4022          * Any new interrupts that happen after this, either while we're
4023          * in this tasklet, or later, will show up in next ISR/tasklet. */
4024         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4025         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4026
4027 #ifdef CONFIG_IWL3945_DEBUG
4028         if (priv->debug_level & IWL_DL_ISR) {
4029                 /* just for debug */
4030                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4031                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4032                               inta, inta_mask, inta_fh);
4033         }
4034 #endif
4035
4036         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4037          * atomic, make sure that inta covers all the interrupts that
4038          * we've discovered, even if FH interrupt came in just after
4039          * reading CSR_INT. */
4040         if (inta_fh & CSR39_FH_INT_RX_MASK)
4041                 inta |= CSR_INT_BIT_FH_RX;
4042         if (inta_fh & CSR39_FH_INT_TX_MASK)
4043                 inta |= CSR_INT_BIT_FH_TX;
4044
4045         /* Now service all interrupt bits discovered above. */
4046         if (inta & CSR_INT_BIT_HW_ERR) {
4047                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
4048
4049                 /* Tell the device to stop sending interrupts */
4050                 iwl3945_disable_interrupts(priv);
4051
4052                 iwl3945_irq_handle_error(priv);
4053
4054                 handled |= CSR_INT_BIT_HW_ERR;
4055
4056                 spin_unlock_irqrestore(&priv->lock, flags);
4057
4058                 return;
4059         }
4060
4061 #ifdef CONFIG_IWL3945_DEBUG
4062         if (priv->debug_level & (IWL_DL_ISR)) {
4063                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4064                 if (inta & CSR_INT_BIT_SCD)
4065                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4066                                       "the frame/frames.\n");
4067
4068                 /* Alive notification via Rx interrupt will do the real work */
4069                 if (inta & CSR_INT_BIT_ALIVE)
4070                         IWL_DEBUG_ISR("Alive interrupt\n");
4071         }
4072 #endif
4073         /* Safely ignore these bits for debug checks below */
4074         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4075
4076         /* Error detected by uCode */
4077         if (inta & CSR_INT_BIT_SW_ERR) {
4078                 IWL_ERR(priv, "Microcode SW error detected. "
4079                         "Restarting 0x%X.\n", inta);
4080                 iwl3945_irq_handle_error(priv);
4081                 handled |= CSR_INT_BIT_SW_ERR;
4082         }
4083
4084         /* uCode wakes up after power-down sleep */
4085         if (inta & CSR_INT_BIT_WAKEUP) {
4086                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4087                 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4088                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4089                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4090                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4091                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4092                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4093                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4094
4095                 handled |= CSR_INT_BIT_WAKEUP;
4096         }
4097
4098         /* All uCode command responses, including Tx command responses,
4099          * Rx "responses" (frame-received notification), and other
4100          * notifications from uCode come through here*/
4101         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4102                 iwl3945_rx_handle(priv);
4103                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4104         }
4105
4106         if (inta & CSR_INT_BIT_FH_TX) {
4107                 IWL_DEBUG_ISR("Tx interrupt\n");
4108
4109                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4110                 if (!iwl_grab_nic_access(priv)) {
4111                         iwl_write_direct32(priv, FH39_TCSR_CREDIT
4112                                              (FH39_SRVC_CHNL), 0x0);
4113                         iwl_release_nic_access(priv);
4114                 }
4115                 handled |= CSR_INT_BIT_FH_TX;
4116         }
4117
4118         if (inta & ~handled)
4119                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
4120
4121         if (inta & ~CSR_INI_SET_MASK) {
4122                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
4123                          inta & ~CSR_INI_SET_MASK);
4124                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
4125         }
4126
4127         /* Re-enable all interrupts */
4128         /* only Re-enable if disabled by irq */
4129         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4130                 iwl3945_enable_interrupts(priv);
4131
4132 #ifdef CONFIG_IWL3945_DEBUG
4133         if (priv->debug_level & (IWL_DL_ISR)) {
4134                 inta = iwl_read32(priv, CSR_INT);
4135                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4136                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4137                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4138                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4139         }
4140 #endif
4141         spin_unlock_irqrestore(&priv->lock, flags);
4142 }
4143
4144 static irqreturn_t iwl3945_isr(int irq, void *data)
4145 {
4146         struct iwl_priv *priv = data;
4147         u32 inta, inta_mask;
4148         u32 inta_fh;
4149         if (!priv)
4150                 return IRQ_NONE;
4151
4152         spin_lock(&priv->lock);
4153
4154         /* Disable (but don't clear!) interrupts here to avoid
4155          *    back-to-back ISRs and sporadic interrupts from our NIC.
4156          * If we have something to service, the tasklet will re-enable ints.
4157          * If we *don't* have something, we'll re-enable before leaving here. */
4158         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
4159         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4160
4161         /* Discover which interrupts are active/pending */
4162         inta = iwl_read32(priv, CSR_INT);
4163         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4164
4165         /* Ignore interrupt if there's nothing in NIC to service.
4166          * This may be due to IRQ shared with another device,
4167          * or due to sporadic interrupts thrown from our NIC. */
4168         if (!inta && !inta_fh) {
4169                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4170                 goto none;
4171         }
4172
4173         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4174                 /* Hardware disappeared */
4175                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
4176                 goto unplugged;
4177         }
4178
4179         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4180                       inta, inta_mask, inta_fh);
4181
4182         inta &= ~CSR_INT_BIT_SCD;
4183
4184         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4185         if (likely(inta || inta_fh))
4186                 tasklet_schedule(&priv->irq_tasklet);
4187 unplugged:
4188         spin_unlock(&priv->lock);
4189
4190         return IRQ_HANDLED;
4191
4192  none:
4193         /* re-enable interrupts here since we don't have anything to service. */
4194         /* only Re-enable if disabled by irq */
4195         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4196                 iwl3945_enable_interrupts(priv);
4197         spin_unlock(&priv->lock);
4198         return IRQ_NONE;
4199 }
4200
4201 /************************** EEPROM BANDS ****************************
4202  *
4203  * The iwl3945_eeprom_band definitions below provide the mapping from the
4204  * EEPROM contents to the specific channel number supported for each
4205  * band.
4206  *
4207  * For example, iwl3945_priv->eeprom39.band_3_channels[4] from the band_3
4208  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4209  * The specific geography and calibration information for that channel
4210  * is contained in the eeprom map itself.
4211  *
4212  * During init, we copy the eeprom information and channel map
4213  * information into priv->channel_info_24/52 and priv->channel_map_24/52
4214  *
4215  * channel_map_24/52 provides the index in the channel_info array for a
4216  * given channel.  We have to have two separate maps as there is channel
4217  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4218  * band_2
4219  *
4220  * A value of 0xff stored in the channel_map indicates that the channel
4221  * is not supported by the hardware at all.
4222  *
4223  * A value of 0xfe in the channel_map indicates that the channel is not
4224  * valid for Tx with the current hardware.  This means that
4225  * while the system can tune and receive on a given channel, it may not
4226  * be able to associate or transmit any frames on that
4227  * channel.  There is no corresponding channel information for that
4228  * entry.
4229  *
4230  *********************************************************************/
4231
4232 /* 2.4 GHz */
4233 static const u8 iwl3945_eeprom_band_1[14] = {
4234         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4235 };
4236
4237 /* 5.2 GHz bands */
4238 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
4239         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4240 };
4241
4242 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
4243         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4244 };
4245
4246 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
4247         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4248 };
4249
4250 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
4251         145, 149, 153, 157, 161, 165
4252 };
4253
4254 static void iwl3945_init_band_reference(const struct iwl_priv *priv, int band,
4255                                     int *eeprom_ch_count,
4256                                     const struct iwl_eeprom_channel
4257                                     **eeprom_ch_info,
4258                                     const u8 **eeprom_ch_index)
4259 {
4260         switch (band) {
4261         case 1:         /* 2.4GHz band */
4262                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4263                 *eeprom_ch_info = priv->eeprom39.band_1_channels;
4264                 *eeprom_ch_index = iwl3945_eeprom_band_1;
4265                 break;
4266         case 2:         /* 4.9GHz band */
4267                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4268                 *eeprom_ch_info = priv->eeprom39.band_2_channels;
4269                 *eeprom_ch_index = iwl3945_eeprom_band_2;
4270                 break;
4271         case 3:         /* 5.2GHz band */
4272                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4273                 *eeprom_ch_info = priv->eeprom39.band_3_channels;
4274                 *eeprom_ch_index = iwl3945_eeprom_band_3;
4275                 break;
4276         case 4:         /* 5.5GHz band */
4277                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4278                 *eeprom_ch_info = priv->eeprom39.band_4_channels;
4279                 *eeprom_ch_index = iwl3945_eeprom_band_4;
4280                 break;
4281         case 5:         /* 5.7GHz band */
4282                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4283                 *eeprom_ch_info = priv->eeprom39.band_5_channels;
4284                 *eeprom_ch_index = iwl3945_eeprom_band_5;
4285                 break;
4286         default:
4287                 BUG();
4288                 return;
4289         }
4290 }
4291
4292 /**
4293  * iwl3945_get_channel_info - Find driver's private channel info
4294  *
4295  * Based on band and channel number.
4296  */
4297 const struct iwl_channel_info *
4298 iwl3945_get_channel_info(const struct iwl_priv *priv,
4299                          enum ieee80211_band band, u16 channel)
4300 {
4301         int i;
4302
4303         switch (band) {
4304         case IEEE80211_BAND_5GHZ:
4305                 for (i = 14; i < priv->channel_count; i++) {
4306                         if (priv->channel_info[i].channel == channel)
4307                                 return &priv->channel_info[i];
4308                 }
4309                 break;
4310
4311         case IEEE80211_BAND_2GHZ:
4312                 if (channel >= 1 && channel <= 14)
4313                         return &priv->channel_info[channel - 1];
4314                 break;
4315         case IEEE80211_NUM_BANDS:
4316                 WARN_ON(1);
4317         }
4318
4319         return NULL;
4320 }
4321
4322 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4323                             ? # x " " : "")
4324
4325 /**
4326  * iwl3945_init_channel_map - Set up driver's info for all possible channels
4327  */
4328 static int iwl3945_init_channel_map(struct iwl_priv *priv)
4329 {
4330         int eeprom_ch_count = 0;
4331         const u8 *eeprom_ch_index = NULL;
4332         const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
4333         int band, ch;
4334         struct iwl_channel_info *ch_info;
4335
4336         if (priv->channel_count) {
4337                 IWL_DEBUG_INFO("Channel map already initialized.\n");
4338                 return 0;
4339         }
4340
4341         if (priv->eeprom39.version < 0x2f) {
4342                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4343                             priv->eeprom39.version);
4344                 return -EINVAL;
4345         }
4346
4347         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4348
4349         priv->channel_count =
4350             ARRAY_SIZE(iwl3945_eeprom_band_1) +
4351             ARRAY_SIZE(iwl3945_eeprom_band_2) +
4352             ARRAY_SIZE(iwl3945_eeprom_band_3) +
4353             ARRAY_SIZE(iwl3945_eeprom_band_4) +
4354             ARRAY_SIZE(iwl3945_eeprom_band_5);
4355
4356         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4357
4358         priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
4359                                      priv->channel_count, GFP_KERNEL);
4360         if (!priv->channel_info) {
4361                 IWL_ERR(priv, "Could not allocate channel_info\n");
4362                 priv->channel_count = 0;
4363                 return -ENOMEM;
4364         }
4365
4366         ch_info = priv->channel_info;
4367
4368         /* Loop through the 5 EEPROM bands adding them in order to the
4369          * channel map we maintain (that contains additional information than
4370          * what just in the EEPROM) */
4371         for (band = 1; band <= 5; band++) {
4372
4373                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4374                                         &eeprom_ch_info, &eeprom_ch_index);
4375
4376                 /* Loop through each band adding each of the channels */
4377                 for (ch = 0; ch < eeprom_ch_count; ch++) {
4378                         ch_info->channel = eeprom_ch_index[ch];
4379                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4380                             IEEE80211_BAND_5GHZ;
4381
4382                         /* permanently store EEPROM's channel regulatory flags
4383                          *   and max power in channel info database. */
4384                         ch_info->eeprom = eeprom_ch_info[ch];
4385
4386                         /* Copy the run-time flags so they are there even on
4387                          * invalid channels */
4388                         ch_info->flags = eeprom_ch_info[ch].flags;
4389
4390                         if (!(is_channel_valid(ch_info))) {
4391                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4392                                                "No traffic\n",
4393                                                ch_info->channel,
4394                                                ch_info->flags,
4395                                                is_channel_a_band(ch_info) ?
4396                                                "5.2" : "2.4");
4397                                 ch_info++;
4398                                 continue;
4399                         }
4400
4401                         /* Initialize regulatory-based run-time data */
4402                         ch_info->max_power_avg = ch_info->curr_txpow =
4403                             eeprom_ch_info[ch].max_power_avg;
4404                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4405                         ch_info->min_power = 0;
4406
4407                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
4408                                        " %ddBm): Ad-Hoc %ssupported\n",
4409                                        ch_info->channel,
4410                                        is_channel_a_band(ch_info) ?
4411                                        "5.2" : "2.4",
4412                                        CHECK_AND_PRINT(VALID),
4413                                        CHECK_AND_PRINT(IBSS),
4414                                        CHECK_AND_PRINT(ACTIVE),
4415                                        CHECK_AND_PRINT(RADAR),
4416                                        CHECK_AND_PRINT(WIDE),
4417                                        CHECK_AND_PRINT(DFS),
4418                                        eeprom_ch_info[ch].flags,
4419                                        eeprom_ch_info[ch].max_power_avg,
4420                                        ((eeprom_ch_info[ch].
4421                                          flags & EEPROM_CHANNEL_IBSS)
4422                                         && !(eeprom_ch_info[ch].
4423                                              flags & EEPROM_CHANNEL_RADAR))
4424                                        ? "" : "not ");
4425
4426                         /* Set the user_txpower_limit to the highest power
4427                          * supported by any channel */
4428                         if (eeprom_ch_info[ch].max_power_avg >
4429                             priv->user_txpower_limit)
4430                                 priv->user_txpower_limit =
4431                                     eeprom_ch_info[ch].max_power_avg;
4432
4433                         ch_info++;
4434                 }
4435         }
4436
4437         /* Set up txpower settings in driver for all channels */
4438         if (iwl3945_txpower_set_from_eeprom(priv))
4439                 return -EIO;
4440
4441         return 0;
4442 }
4443
4444 /*
4445  * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4446  */
4447 static void iwl3945_free_channel_map(struct iwl_priv *priv)
4448 {
4449         kfree(priv->channel_info);
4450         priv->channel_count = 0;
4451 }
4452
4453 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4454  * sending probe req.  This should be set long enough to hear probe responses
4455  * from more than one AP.  */
4456 #define IWL_ACTIVE_DWELL_TIME_24    (30)        /* all times in msec */
4457 #define IWL_ACTIVE_DWELL_TIME_52    (20)
4458
4459 #define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
4460 #define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
4461
4462 /* For faster active scanning, scan will move to the next channel if fewer than
4463  * PLCP_QUIET_THRESH packets are heard on this channel within
4464  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4465  * time if it's a quiet channel (nothing responded to our probe, and there's
4466  * no other traffic).
4467  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4468 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4469 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(10)  /* msec */
4470
4471 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4472  * Must be set longer than active dwell time.
4473  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4474 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4475 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4476 #define IWL_PASSIVE_DWELL_BASE      (100)
4477 #define IWL_CHANNEL_TUNE_TIME       5
4478
4479 #define IWL_SCAN_PROBE_MASK(n)   (BIT(n) | (BIT(n) - BIT(1)))
4480
4481 static inline u16 iwl3945_get_active_dwell_time(struct iwl_priv *priv,
4482                                                 enum ieee80211_band band,
4483                                                 u8 n_probes)
4484 {
4485         if (band == IEEE80211_BAND_5GHZ)
4486                 return IWL_ACTIVE_DWELL_TIME_52 +
4487                         IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
4488         else
4489                 return IWL_ACTIVE_DWELL_TIME_24 +
4490                         IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
4491 }
4492
4493 static u16 iwl3945_get_passive_dwell_time(struct iwl_priv *priv,
4494                                           enum ieee80211_band band)
4495 {
4496         u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4497             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4498             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4499
4500         if (iwl3945_is_associated(priv)) {
4501                 /* If we're associated, we clamp the maximum passive
4502                  * dwell time to be 98% of the beacon interval (minus
4503                  * 2 * channel tune time) */
4504                 passive = priv->beacon_int;
4505                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4506                         passive = IWL_PASSIVE_DWELL_BASE;
4507                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4508         }
4509
4510         return passive;
4511 }
4512
4513 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
4514                                          enum ieee80211_band band,
4515                                      u8 is_active, u8 n_probes,
4516                                      struct iwl3945_scan_channel *scan_ch)
4517 {
4518         const struct ieee80211_channel *channels = NULL;
4519         const struct ieee80211_supported_band *sband;
4520         const struct iwl_channel_info *ch_info;
4521         u16 passive_dwell = 0;
4522         u16 active_dwell = 0;
4523         int added, i;
4524
4525         sband = iwl_get_hw_mode(priv, band);
4526         if (!sband)
4527                 return 0;
4528
4529         channels = sband->channels;
4530
4531         active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4532         passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4533
4534         if (passive_dwell <= active_dwell)
4535                 passive_dwell = active_dwell + 1;
4536
4537         for (i = 0, added = 0; i < sband->n_channels; i++) {
4538                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4539                         continue;
4540
4541                 scan_ch->channel = channels[i].hw_value;
4542
4543                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4544                 if (!is_channel_valid(ch_info)) {
4545                         IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4546                                        scan_ch->channel);
4547                         continue;
4548                 }
4549
4550                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4551                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4552                 /* If passive , set up for auto-switch
4553                  *  and use long active_dwell time.
4554                  */
4555                 if (!is_active || is_channel_passive(ch_info) ||
4556                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
4557                         scan_ch->type = 0;      /* passive */
4558                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
4559                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
4560                 } else {
4561                         scan_ch->type = 1;      /* active */
4562                 }
4563
4564                 /* Set direct probe bits. These may be used both for active
4565                  * scan channels (probes gets sent right away),
4566                  * or for passive channels (probes get se sent only after
4567                  * hearing clear Rx packet).*/
4568                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
4569                         if (n_probes)
4570                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4571                 } else {
4572                         /* uCode v1 does not allow setting direct probe bits on
4573                          * passive channel. */
4574                         if ((scan_ch->type & 1) && n_probes)
4575                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4576                 }
4577
4578                 /* Set txpower levels to defaults */
4579                 scan_ch->tpc.dsp_atten = 110;
4580                 /* scan_pwr_info->tpc.dsp_atten; */
4581
4582                 /*scan_pwr_info->tpc.tx_gain; */
4583                 if (band == IEEE80211_BAND_5GHZ)
4584                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4585                 else {
4586                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4587                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4588                          * power level:
4589                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4590                          */
4591                 }
4592
4593                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4594                                scan_ch->channel,
4595                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4596                                (scan_ch->type & 1) ?
4597                                active_dwell : passive_dwell);
4598
4599                 scan_ch++;
4600                 added++;
4601         }
4602
4603         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4604         return added;
4605 }
4606
4607 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
4608                               struct ieee80211_rate *rates)
4609 {
4610         int i;
4611
4612         for (i = 0; i < IWL_RATE_COUNT; i++) {
4613                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4614                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4615                 rates[i].hw_value_short = i;
4616                 rates[i].flags = 0;
4617                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4618                         /*
4619                          * If CCK != 1M then set short preamble rate flag.
4620                          */
4621                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4622                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4623                 }
4624         }
4625 }
4626
4627 /**
4628  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
4629  */
4630 static int iwl3945_init_geos(struct iwl_priv *priv)
4631 {
4632         struct iwl_channel_info *ch;
4633         struct ieee80211_supported_band *sband;
4634         struct ieee80211_channel *channels;
4635         struct ieee80211_channel *geo_ch;
4636         struct ieee80211_rate *rates;
4637         int i = 0;
4638
4639         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4640             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4641                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4642                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4643                 return 0;
4644         }
4645
4646         channels = kzalloc(sizeof(struct ieee80211_channel) *
4647                            priv->channel_count, GFP_KERNEL);
4648         if (!channels)
4649                 return -ENOMEM;
4650
4651         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4652                         GFP_KERNEL);
4653         if (!rates) {
4654                 kfree(channels);
4655                 return -ENOMEM;
4656         }
4657
4658         /* 5.2GHz channels start after the 2.4GHz channels */
4659         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4660         sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4661         /* just OFDM */
4662         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4663         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4664
4665         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4666         sband->channels = channels;
4667         /* OFDM & CCK */
4668         sband->bitrates = rates;
4669         sband->n_bitrates = IWL_RATE_COUNT;
4670
4671         priv->ieee_channels = channels;
4672         priv->ieee_rates = rates;
4673
4674         iwl3945_init_hw_rates(priv, rates);
4675
4676         for (i = 0;  i < priv->channel_count; i++) {
4677                 ch = &priv->channel_info[i];
4678
4679                 /* FIXME: might be removed if scan is OK*/
4680                 if (!is_channel_valid(ch))
4681                         continue;
4682
4683                 if (is_channel_a_band(ch))
4684                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4685                 else
4686                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4687
4688                 geo_ch = &sband->channels[sband->n_channels++];
4689
4690                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4691                 geo_ch->max_power = ch->max_power_avg;
4692                 geo_ch->max_antenna_gain = 0xff;
4693                 geo_ch->hw_value = ch->channel;
4694
4695                 if (is_channel_valid(ch)) {
4696                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4697                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4698
4699                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4700                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4701
4702                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4703                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4704
4705                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4706                                 priv->max_channel_txpower_limit =
4707                                     ch->max_power_avg;
4708                 } else {
4709                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4710                 }
4711
4712                 /* Save flags for reg domain usage */
4713                 geo_ch->orig_flags = geo_ch->flags;
4714
4715                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4716                                 ch->channel, geo_ch->center_freq,
4717                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4718                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4719                                 "restricted" : "valid",
4720                                  geo_ch->flags);
4721         }
4722
4723         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4724              priv->cfg->sku & IWL_SKU_A) {
4725                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
4726                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
4727                         priv->pci_dev->device, priv->pci_dev->subsystem_device);
4728                  priv->cfg->sku &= ~IWL_SKU_A;
4729         }
4730
4731         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4732                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4733                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4734
4735         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4736                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4737                         &priv->bands[IEEE80211_BAND_2GHZ];
4738         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4739                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4740                         &priv->bands[IEEE80211_BAND_5GHZ];
4741
4742         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4743
4744         return 0;
4745 }
4746
4747 /*
4748  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
4749  */
4750 static void iwl3945_free_geos(struct iwl_priv *priv)
4751 {
4752         kfree(priv->ieee_channels);
4753         kfree(priv->ieee_rates);
4754         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4755 }
4756
4757 /******************************************************************************
4758  *
4759  * uCode download functions
4760  *
4761  ******************************************************************************/
4762
4763 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
4764 {
4765         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4766         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4767         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4768         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4769         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4770         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4771 }
4772
4773 /**
4774  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
4775  *     looking at all data.
4776  */
4777 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
4778 {
4779         u32 val;
4780         u32 save_len = len;
4781         int rc = 0;
4782         u32 errcnt;
4783
4784         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4785
4786         rc = iwl_grab_nic_access(priv);
4787         if (rc)
4788                 return rc;
4789
4790         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4791                                IWL39_RTC_INST_LOWER_BOUND);
4792
4793         errcnt = 0;
4794         for (; len > 0; len -= sizeof(u32), image++) {
4795                 /* read data comes through single port, auto-incr addr */
4796                 /* NOTE: Use the debugless read so we don't flood kernel log
4797                  * if IWL_DL_IO is set */
4798                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4799                 if (val != le32_to_cpu(*image)) {
4800                         IWL_ERR(priv, "uCode INST section is invalid at "
4801                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4802                                   save_len - len, val, le32_to_cpu(*image));
4803                         rc = -EIO;
4804                         errcnt++;
4805                         if (errcnt >= 20)
4806                                 break;
4807                 }
4808         }
4809
4810         iwl_release_nic_access(priv);
4811
4812         if (!errcnt)
4813                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
4814
4815         return rc;
4816 }
4817
4818
4819 /**
4820  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
4821  *   using sample data 100 bytes apart.  If these sample points are good,
4822  *   it's a pretty good bet that everything between them is good, too.
4823  */
4824 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4825 {
4826         u32 val;
4827         int rc = 0;
4828         u32 errcnt = 0;
4829         u32 i;
4830
4831         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4832
4833         rc = iwl_grab_nic_access(priv);
4834         if (rc)
4835                 return rc;
4836
4837         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4838                 /* read data comes through single port, auto-incr addr */
4839                 /* NOTE: Use the debugless read so we don't flood kernel log
4840                  * if IWL_DL_IO is set */
4841                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4842                         i + IWL39_RTC_INST_LOWER_BOUND);
4843                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4844                 if (val != le32_to_cpu(*image)) {
4845 #if 0 /* Enable this if you want to see details */
4846                         IWL_ERR(priv, "uCode INST section is invalid at "
4847                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4848                                   i, val, *image);
4849 #endif
4850                         rc = -EIO;
4851                         errcnt++;
4852                         if (errcnt >= 3)
4853                                 break;
4854                 }
4855         }
4856
4857         iwl_release_nic_access(priv);
4858
4859         return rc;
4860 }
4861
4862
4863 /**
4864  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
4865  *    and verify its contents
4866  */
4867 static int iwl3945_verify_ucode(struct iwl_priv *priv)
4868 {
4869         __le32 *image;
4870         u32 len;
4871         int rc = 0;
4872
4873         /* Try bootstrap */
4874         image = (__le32 *)priv->ucode_boot.v_addr;
4875         len = priv->ucode_boot.len;
4876         rc = iwl3945_verify_inst_sparse(priv, image, len);
4877         if (rc == 0) {
4878                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
4879                 return 0;
4880         }
4881
4882         /* Try initialize */
4883         image = (__le32 *)priv->ucode_init.v_addr;
4884         len = priv->ucode_init.len;
4885         rc = iwl3945_verify_inst_sparse(priv, image, len);
4886         if (rc == 0) {
4887                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
4888                 return 0;
4889         }
4890
4891         /* Try runtime/protocol */
4892         image = (__le32 *)priv->ucode_code.v_addr;
4893         len = priv->ucode_code.len;
4894         rc = iwl3945_verify_inst_sparse(priv, image, len);
4895         if (rc == 0) {
4896                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
4897                 return 0;
4898         }
4899
4900         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
4901
4902         /* Since nothing seems to match, show first several data entries in
4903          * instruction SRAM, so maybe visual inspection will give a clue.
4904          * Selection of bootstrap image (vs. other images) is arbitrary. */
4905         image = (__le32 *)priv->ucode_boot.v_addr;
4906         len = priv->ucode_boot.len;
4907         rc = iwl3945_verify_inst_full(priv, image, len);
4908
4909         return rc;
4910 }
4911
4912 static void iwl3945_nic_start(struct iwl_priv *priv)
4913 {
4914         /* Remove all resets to allow NIC to operate */
4915         iwl_write32(priv, CSR_RESET, 0);
4916 }
4917
4918 /**
4919  * iwl3945_read_ucode - Read uCode images from disk file.
4920  *
4921  * Copy into buffers for card to fetch via bus-mastering
4922  */
4923 static int iwl3945_read_ucode(struct iwl_priv *priv)
4924 {
4925         struct iwl_ucode *ucode;
4926         int ret = -EINVAL, index;
4927         const struct firmware *ucode_raw;
4928         /* firmware file name contains uCode/driver compatibility version */
4929         const char *name_pre = priv->cfg->fw_name_pre;
4930         const unsigned int api_max = priv->cfg->ucode_api_max;
4931         const unsigned int api_min = priv->cfg->ucode_api_min;
4932         char buf[25];
4933         u8 *src;
4934         size_t len;
4935         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
4936
4937         /* Ask kernel firmware_class module to get the boot firmware off disk.
4938          * request_firmware() is synchronous, file is in memory on return. */
4939         for (index = api_max; index >= api_min; index--) {
4940                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
4941                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
4942                 if (ret < 0) {
4943                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
4944                                   buf, ret);
4945                         if (ret == -ENOENT)
4946                                 continue;
4947                         else
4948                                 goto error;
4949                 } else {
4950                         if (index < api_max)
4951                                 IWL_ERR(priv, "Loaded firmware %s, "
4952                                         "which is deprecated. "
4953                                         " Please use API v%u instead.\n",
4954                                           buf, api_max);
4955                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
4956                                        buf, ucode_raw->size);
4957                         break;
4958                 }
4959         }
4960
4961         if (ret < 0)
4962                 goto error;
4963
4964         /* Make sure that we got at least our header! */
4965         if (ucode_raw->size < sizeof(*ucode)) {
4966                 IWL_ERR(priv, "File size way too small!\n");
4967                 ret = -EINVAL;
4968                 goto err_release;
4969         }
4970
4971         /* Data from ucode file:  header followed by uCode images */
4972         ucode = (void *)ucode_raw->data;
4973
4974         priv->ucode_ver = le32_to_cpu(ucode->ver);
4975         api_ver = IWL_UCODE_API(priv->ucode_ver);
4976         inst_size = le32_to_cpu(ucode->inst_size);
4977         data_size = le32_to_cpu(ucode->data_size);
4978         init_size = le32_to_cpu(ucode->init_size);
4979         init_data_size = le32_to_cpu(ucode->init_data_size);
4980         boot_size = le32_to_cpu(ucode->boot_size);
4981
4982         /* api_ver should match the api version forming part of the
4983          * firmware filename ... but we don't check for that and only rely
4984          * on the API version read from firware header from here on forward */
4985
4986         if (api_ver < api_min || api_ver > api_max) {
4987                 IWL_ERR(priv, "Driver unable to support your firmware API. "
4988                           "Driver supports v%u, firmware is v%u.\n",
4989                           api_max, api_ver);
4990                 priv->ucode_ver = 0;
4991                 ret = -EINVAL;
4992                 goto err_release;
4993         }
4994         if (api_ver != api_max)
4995                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
4996                           "got %u. New firmware can be obtained "
4997                           "from http://www.intellinuxwireless.org.\n",
4998                           api_max, api_ver);
4999
5000         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
5001                 IWL_UCODE_MAJOR(priv->ucode_ver),
5002                 IWL_UCODE_MINOR(priv->ucode_ver),
5003                 IWL_UCODE_API(priv->ucode_ver),
5004                 IWL_UCODE_SERIAL(priv->ucode_ver));
5005
5006         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
5007                        priv->ucode_ver);
5008         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5009         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5010         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5011         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5012         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5013
5014
5015         /* Verify size of file vs. image size info in file's header */
5016         if (ucode_raw->size < sizeof(*ucode) +
5017                 inst_size + data_size + init_size +
5018                 init_data_size + boot_size) {
5019
5020                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5021                                (int)ucode_raw->size);
5022                 ret = -EINVAL;
5023                 goto err_release;
5024         }
5025
5026         /* Verify that uCode images will fit in card's SRAM */
5027         if (inst_size > IWL39_MAX_INST_SIZE) {
5028                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5029                                inst_size);
5030                 ret = -EINVAL;
5031                 goto err_release;
5032         }
5033
5034         if (data_size > IWL39_MAX_DATA_SIZE) {
5035                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5036                                data_size);
5037                 ret = -EINVAL;
5038                 goto err_release;
5039         }
5040         if (init_size > IWL39_MAX_INST_SIZE) {
5041                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5042                                 init_size);
5043                 ret = -EINVAL;
5044                 goto err_release;
5045         }
5046         if (init_data_size > IWL39_MAX_DATA_SIZE) {
5047                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5048                                 init_data_size);
5049                 ret = -EINVAL;
5050                 goto err_release;
5051         }
5052         if (boot_size > IWL39_MAX_BSM_SIZE) {
5053                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5054                                 boot_size);
5055                 ret = -EINVAL;
5056                 goto err_release;
5057         }
5058
5059         /* Allocate ucode buffers for card's bus-master loading ... */
5060
5061         /* Runtime instructions and 2 copies of data:
5062          * 1) unmodified from disk
5063          * 2) backup cache for save/restore during power-downs */
5064         priv->ucode_code.len = inst_size;
5065         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5066
5067         priv->ucode_data.len = data_size;
5068         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5069
5070         priv->ucode_data_backup.len = data_size;
5071         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5072
5073         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5074             !priv->ucode_data_backup.v_addr)
5075                 goto err_pci_alloc;
5076
5077         /* Initialization instructions and data */
5078         if (init_size && init_data_size) {
5079                 priv->ucode_init.len = init_size;
5080                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5081
5082                 priv->ucode_init_data.len = init_data_size;
5083                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5084
5085                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5086                         goto err_pci_alloc;
5087         }
5088
5089         /* Bootstrap (instructions only, no data) */
5090         if (boot_size) {
5091                 priv->ucode_boot.len = boot_size;
5092                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5093
5094                 if (!priv->ucode_boot.v_addr)
5095                         goto err_pci_alloc;
5096         }
5097
5098         /* Copy images into buffers for card's bus-master reads ... */
5099
5100         /* Runtime instructions (first block of data in file) */
5101         src = &ucode->data[0];
5102         len = priv->ucode_code.len;
5103         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5104         memcpy(priv->ucode_code.v_addr, src, len);
5105         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5106                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5107
5108         /* Runtime data (2nd block)
5109          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
5110         src = &ucode->data[inst_size];
5111         len = priv->ucode_data.len;
5112         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5113         memcpy(priv->ucode_data.v_addr, src, len);
5114         memcpy(priv->ucode_data_backup.v_addr, src, len);
5115
5116         /* Initialization instructions (3rd block) */
5117         if (init_size) {
5118                 src = &ucode->data[inst_size + data_size];
5119                 len = priv->ucode_init.len;
5120                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5121                                len);
5122                 memcpy(priv->ucode_init.v_addr, src, len);
5123         }
5124
5125         /* Initialization data (4th block) */
5126         if (init_data_size) {
5127                 src = &ucode->data[inst_size + data_size + init_size];
5128                 len = priv->ucode_init_data.len;
5129                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5130                                (int)len);
5131                 memcpy(priv->ucode_init_data.v_addr, src, len);
5132         }
5133
5134         /* Bootstrap instructions (5th block) */
5135         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5136         len = priv->ucode_boot.len;
5137         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5138                        (int)len);
5139         memcpy(priv->ucode_boot.v_addr, src, len);
5140
5141         /* We have our copies now, allow OS release its copies */
5142         release_firmware(ucode_raw);
5143         return 0;
5144
5145  err_pci_alloc:
5146         IWL_ERR(priv, "failed to allocate pci memory\n");
5147         ret = -ENOMEM;
5148         iwl3945_dealloc_ucode_pci(priv);
5149
5150  err_release:
5151         release_firmware(ucode_raw);
5152
5153  error:
5154         return ret;
5155 }
5156
5157
5158 /**
5159  * iwl3945_set_ucode_ptrs - Set uCode address location
5160  *
5161  * Tell initialization uCode where to find runtime uCode.
5162  *
5163  * BSM registers initially contain pointers to initialization uCode.
5164  * We need to replace them to load runtime uCode inst and data,
5165  * and to save runtime data when powering down.
5166  */
5167 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
5168 {
5169         dma_addr_t pinst;
5170         dma_addr_t pdata;
5171         int rc = 0;
5172         unsigned long flags;
5173
5174         /* bits 31:0 for 3945 */
5175         pinst = priv->ucode_code.p_addr;
5176         pdata = priv->ucode_data_backup.p_addr;
5177
5178         spin_lock_irqsave(&priv->lock, flags);
5179         rc = iwl_grab_nic_access(priv);
5180         if (rc) {
5181                 spin_unlock_irqrestore(&priv->lock, flags);
5182                 return rc;
5183         }
5184
5185         /* Tell bootstrap uCode where to find image to load */
5186         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5187         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5188         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5189                                  priv->ucode_data.len);
5190
5191         /* Inst byte count must be last to set up, bit 31 signals uCode
5192          *   that all new ptr/size info is in place */
5193         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5194                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5195
5196         iwl_release_nic_access(priv);
5197
5198         spin_unlock_irqrestore(&priv->lock, flags);
5199
5200         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5201
5202         return rc;
5203 }
5204
5205 /**
5206  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5207  *
5208  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5209  *
5210  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5211  */
5212 static void iwl3945_init_alive_start(struct iwl_priv *priv)
5213 {
5214         /* Check alive response for "valid" sign from uCode */
5215         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5216                 /* We had an error bringing up the hardware, so take it
5217                  * all the way back down so we can try again */
5218                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5219                 goto restart;
5220         }
5221
5222         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5223          * This is a paranoid check, because we would not have gotten the
5224          * "initialize" alive if code weren't properly loaded.  */
5225         if (iwl3945_verify_ucode(priv)) {
5226                 /* Runtime instruction load was bad;
5227                  * take it all the way back down so we can try again */
5228                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5229                 goto restart;
5230         }
5231
5232         /* Send pointers to protocol/runtime uCode image ... init code will
5233          * load and launch runtime uCode, which will send us another "Alive"
5234          * notification. */
5235         IWL_DEBUG_INFO("Initialization Alive received.\n");
5236         if (iwl3945_set_ucode_ptrs(priv)) {
5237                 /* Runtime instruction load won't happen;
5238                  * take it all the way back down so we can try again */
5239                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5240                 goto restart;
5241         }
5242         return;
5243
5244  restart:
5245         queue_work(priv->workqueue, &priv->restart);
5246 }
5247
5248
5249 /* temporary */
5250 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
5251                                      struct sk_buff *skb);
5252
5253 /**
5254  * iwl3945_alive_start - called after REPLY_ALIVE notification received
5255  *                   from protocol/runtime uCode (initialization uCode's
5256  *                   Alive gets handled by iwl3945_init_alive_start()).
5257  */
5258 static void iwl3945_alive_start(struct iwl_priv *priv)
5259 {
5260         int rc = 0;
5261         int thermal_spin = 0;
5262         u32 rfkill;
5263
5264         IWL_DEBUG_INFO("Runtime Alive received.\n");
5265
5266         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5267                 /* We had an error bringing up the hardware, so take it
5268                  * all the way back down so we can try again */
5269                 IWL_DEBUG_INFO("Alive failed.\n");
5270                 goto restart;
5271         }
5272
5273         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5274          * This is a paranoid check, because we would not have gotten the
5275          * "runtime" alive if code weren't properly loaded.  */
5276         if (iwl3945_verify_ucode(priv)) {
5277                 /* Runtime instruction load was bad;
5278                  * take it all the way back down so we can try again */
5279                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5280                 goto restart;
5281         }
5282
5283         iwl3945_clear_stations_table(priv);
5284
5285         rc = iwl_grab_nic_access(priv);
5286         if (rc) {
5287                 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
5288                 return;
5289         }
5290
5291         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
5292         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5293         iwl_release_nic_access(priv);
5294
5295         if (rfkill & 0x1) {
5296                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5297                 /* if RFKILL is not on, then wait for thermal
5298                  * sensor in adapter to kick in */
5299                 while (iwl3945_hw_get_temperature(priv) == 0) {
5300                         thermal_spin++;
5301                         udelay(10);
5302                 }
5303
5304                 if (thermal_spin)
5305                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5306                                        thermal_spin * 10);
5307         } else
5308                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5309
5310         /* After the ALIVE response, we can send commands to 3945 uCode */
5311         set_bit(STATUS_ALIVE, &priv->status);
5312
5313         /* Clear out the uCode error bit if it is set */
5314         clear_bit(STATUS_FW_ERROR, &priv->status);
5315
5316         if (iwl_is_rfkill(priv))
5317                 return;
5318
5319         ieee80211_wake_queues(priv->hw);
5320
5321         priv->active_rate = priv->rates_mask;
5322         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5323
5324         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5325
5326         if (iwl3945_is_associated(priv)) {
5327                 struct iwl3945_rxon_cmd *active_rxon =
5328                                 (struct iwl3945_rxon_cmd *)(&priv->active39_rxon);
5329
5330                 memcpy(&priv->staging39_rxon, &priv->active39_rxon,
5331                        sizeof(priv->staging39_rxon));
5332                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5333         } else {
5334                 /* Initialize our rx_config data */
5335                 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
5336                 memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5337         }
5338
5339         /* Configure Bluetooth device coexistence support */
5340         iwl3945_send_bt_config(priv);
5341
5342         /* Configure the adapter for unassociated operation */
5343         iwl3945_commit_rxon(priv);
5344
5345         iwl3945_reg_txpower_periodic(priv);
5346
5347         iwl3945_led_register(priv);
5348
5349         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5350         set_bit(STATUS_READY, &priv->status);
5351         wake_up_interruptible(&priv->wait_command_queue);
5352
5353         if (priv->error_recovering)
5354                 iwl3945_error_recovery(priv);
5355
5356         /* reassociate for ADHOC mode */
5357         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
5358                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
5359                                                                 priv->vif);
5360                 if (beacon)
5361                         iwl3945_mac_beacon_update(priv->hw, beacon);
5362         }
5363
5364         return;
5365
5366  restart:
5367         queue_work(priv->workqueue, &priv->restart);
5368 }
5369
5370 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
5371
5372 static void __iwl3945_down(struct iwl_priv *priv)
5373 {
5374         unsigned long flags;
5375         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5376         struct ieee80211_conf *conf = NULL;
5377
5378         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5379
5380         conf = ieee80211_get_hw_conf(priv->hw);
5381
5382         if (!exit_pending)
5383                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5384
5385         iwl3945_led_unregister(priv);
5386         iwl3945_clear_stations_table(priv);
5387
5388         /* Unblock any waiting calls */
5389         wake_up_interruptible_all(&priv->wait_command_queue);
5390
5391         /* Wipe out the EXIT_PENDING status bit if we are not actually
5392          * exiting the module */
5393         if (!exit_pending)
5394                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5395
5396         /* stop and reset the on-board processor */
5397         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5398
5399         /* tell the device to stop sending interrupts */
5400         spin_lock_irqsave(&priv->lock, flags);
5401         iwl3945_disable_interrupts(priv);
5402         spin_unlock_irqrestore(&priv->lock, flags);
5403         iwl_synchronize_irq(priv);
5404
5405         if (priv->mac80211_registered)
5406                 ieee80211_stop_queues(priv->hw);
5407
5408         /* If we have not previously called iwl3945_init() then
5409          * clear all bits but the RF Kill and SUSPEND bits and return */
5410         if (!iwl_is_init(priv)) {
5411                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5412                                         STATUS_RF_KILL_HW |
5413                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5414                                         STATUS_RF_KILL_SW |
5415                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5416                                         STATUS_GEO_CONFIGURED |
5417                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5418                                         STATUS_IN_SUSPEND |
5419                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5420                                         STATUS_EXIT_PENDING;
5421                 goto exit;
5422         }
5423
5424         /* ...otherwise clear out all the status bits but the RF Kill and
5425          * SUSPEND bits and continue taking the NIC down. */
5426         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5427                                 STATUS_RF_KILL_HW |
5428                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5429                                 STATUS_RF_KILL_SW |
5430                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5431                                 STATUS_GEO_CONFIGURED |
5432                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5433                                 STATUS_IN_SUSPEND |
5434                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5435                                 STATUS_FW_ERROR |
5436                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5437                                 STATUS_EXIT_PENDING;
5438
5439         spin_lock_irqsave(&priv->lock, flags);
5440         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5441         spin_unlock_irqrestore(&priv->lock, flags);
5442
5443         iwl3945_hw_txq_ctx_stop(priv);
5444         iwl3945_hw_rxq_stop(priv);
5445
5446         spin_lock_irqsave(&priv->lock, flags);
5447         if (!iwl_grab_nic_access(priv)) {
5448                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5449                                          APMG_CLK_VAL_DMA_CLK_RQT);
5450                 iwl_release_nic_access(priv);
5451         }
5452         spin_unlock_irqrestore(&priv->lock, flags);
5453
5454         udelay(5);
5455
5456         priv->cfg->ops->lib->apm_ops.reset(priv);
5457  exit:
5458         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
5459
5460         if (priv->ibss_beacon)
5461                 dev_kfree_skb(priv->ibss_beacon);
5462         priv->ibss_beacon = NULL;
5463
5464         /* clear out any free frames */
5465         iwl3945_clear_free_frames(priv);
5466 }
5467
5468 static void iwl3945_down(struct iwl_priv *priv)
5469 {
5470         mutex_lock(&priv->mutex);
5471         __iwl3945_down(priv);
5472         mutex_unlock(&priv->mutex);
5473
5474         iwl3945_cancel_deferred_work(priv);
5475 }
5476
5477 #define MAX_HW_RESTARTS 5
5478
5479 static int __iwl3945_up(struct iwl_priv *priv)
5480 {
5481         int rc, i;
5482
5483         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5484                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
5485                 return -EIO;
5486         }
5487
5488         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5489                 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
5490                             "parameter)\n");
5491                 return -ENODEV;
5492         }
5493
5494         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5495                 IWL_ERR(priv, "ucode not available for device bring up\n");
5496                 return -EIO;
5497         }
5498
5499         /* If platform's RF_KILL switch is NOT set to KILL */
5500         if (iwl_read32(priv, CSR_GP_CNTRL) &
5501                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5502                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5503         else {
5504                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5505                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5506                         IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
5507                         return -ENODEV;
5508                 }
5509         }
5510
5511         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5512
5513         rc = iwl3945_hw_nic_init(priv);
5514         if (rc) {
5515                 IWL_ERR(priv, "Unable to int nic\n");
5516                 return rc;
5517         }
5518
5519         /* make sure rfkill handshake bits are cleared */
5520         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5521         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5522                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5523
5524         /* clear (again), then enable host interrupts */
5525         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5526         iwl3945_enable_interrupts(priv);
5527
5528         /* really make sure rfkill handshake bits are cleared */
5529         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5530         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5531
5532         /* Copy original ucode data image from disk into backup cache.
5533          * This will be used to initialize the on-board processor's
5534          * data SRAM for a clean start when the runtime program first loads. */
5535         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5536                priv->ucode_data.len);
5537
5538         /* We return success when we resume from suspend and rf_kill is on. */
5539         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5540                 return 0;
5541
5542         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5543
5544                 iwl3945_clear_stations_table(priv);
5545
5546                 /* load bootstrap state machine,
5547                  * load bootstrap program into processor's memory,
5548                  * prepare to load the "initialize" uCode */
5549                 priv->cfg->ops->lib->load_ucode(priv);
5550
5551                 if (rc) {
5552                         IWL_ERR(priv,
5553                                 "Unable to set up bootstrap uCode: %d\n", rc);
5554                         continue;
5555                 }
5556
5557                 /* start card; "initialize" will load runtime ucode */
5558                 iwl3945_nic_start(priv);
5559
5560                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5561
5562                 return 0;
5563         }
5564
5565         set_bit(STATUS_EXIT_PENDING, &priv->status);
5566         __iwl3945_down(priv);
5567         clear_bit(STATUS_EXIT_PENDING, &priv->status);
5568
5569         /* tried to restart and config the device for as long as our
5570          * patience could withstand */
5571         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
5572         return -EIO;
5573 }
5574
5575
5576 /*****************************************************************************
5577  *
5578  * Workqueue callbacks
5579  *
5580  *****************************************************************************/
5581
5582 static void iwl3945_bg_init_alive_start(struct work_struct *data)
5583 {
5584         struct iwl_priv *priv =
5585             container_of(data, struct iwl_priv, init_alive_start.work);
5586
5587         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5588                 return;
5589
5590         mutex_lock(&priv->mutex);
5591         iwl3945_init_alive_start(priv);
5592         mutex_unlock(&priv->mutex);
5593 }
5594
5595 static void iwl3945_bg_alive_start(struct work_struct *data)
5596 {
5597         struct iwl_priv *priv =
5598             container_of(data, struct iwl_priv, alive_start.work);
5599
5600         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5601                 return;
5602
5603         mutex_lock(&priv->mutex);
5604         iwl3945_alive_start(priv);
5605         mutex_unlock(&priv->mutex);
5606 }
5607
5608 static void iwl3945_bg_rf_kill(struct work_struct *work)
5609 {
5610         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5611
5612         wake_up_interruptible(&priv->wait_command_queue);
5613
5614         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5615                 return;
5616
5617         mutex_lock(&priv->mutex);
5618
5619         if (!iwl_is_rfkill(priv)) {
5620                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5621                           "HW and/or SW RF Kill no longer active, restarting "
5622                           "device\n");
5623                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5624                         queue_work(priv->workqueue, &priv->restart);
5625         } else {
5626
5627                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5628                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5629                                           "disabled by SW switch\n");
5630                 else
5631                         IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
5632                                     "Kill switch must be turned off for "
5633                                     "wireless networking to work.\n");
5634         }
5635
5636         mutex_unlock(&priv->mutex);
5637         iwl3945_rfkill_set_hw_state(priv);
5638 }
5639
5640 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5641
5642 static void iwl3945_bg_scan_check(struct work_struct *data)
5643 {
5644         struct iwl_priv *priv =
5645             container_of(data, struct iwl_priv, scan_check.work);
5646
5647         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5648                 return;
5649
5650         mutex_lock(&priv->mutex);
5651         if (test_bit(STATUS_SCANNING, &priv->status) ||
5652             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5653                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5654                           "Scan completion watchdog resetting adapter (%dms)\n",
5655                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5656
5657                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5658                         iwl3945_send_scan_abort(priv);
5659         }
5660         mutex_unlock(&priv->mutex);
5661 }
5662
5663 static void iwl3945_bg_request_scan(struct work_struct *data)
5664 {
5665         struct iwl_priv *priv =
5666             container_of(data, struct iwl_priv, request_scan);
5667         struct iwl_host_cmd cmd = {
5668                 .id = REPLY_SCAN_CMD,
5669                 .len = sizeof(struct iwl3945_scan_cmd),
5670                 .meta.flags = CMD_SIZE_HUGE,
5671         };
5672         int rc = 0;
5673         struct iwl3945_scan_cmd *scan;
5674         struct ieee80211_conf *conf = NULL;
5675         u8 n_probes = 2;
5676         enum ieee80211_band band;
5677         DECLARE_SSID_BUF(ssid);
5678
5679         conf = ieee80211_get_hw_conf(priv->hw);
5680
5681         mutex_lock(&priv->mutex);
5682
5683         if (!iwl_is_ready(priv)) {
5684                 IWL_WARN(priv, "request scan called when driver not ready.\n");
5685                 goto done;
5686         }
5687
5688         /* Make sure the scan wasn't canceled before this queued work
5689          * was given the chance to run... */
5690         if (!test_bit(STATUS_SCANNING, &priv->status))
5691                 goto done;
5692
5693         /* This should never be called or scheduled if there is currently
5694          * a scan active in the hardware. */
5695         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5696                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5697                                "Ignoring second request.\n");
5698                 rc = -EIO;
5699                 goto done;
5700         }
5701
5702         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5703                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5704                 goto done;
5705         }
5706
5707         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5708                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
5709                 goto done;
5710         }
5711
5712         if (iwl_is_rfkill(priv)) {
5713                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5714                 goto done;
5715         }
5716
5717         if (!test_bit(STATUS_READY, &priv->status)) {
5718                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
5719                 goto done;
5720         }
5721
5722         if (!priv->scan_bands) {
5723                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5724                 goto done;
5725         }
5726
5727         if (!priv->scan39) {
5728                 priv->scan39 = kmalloc(sizeof(struct iwl3945_scan_cmd) +
5729                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5730                 if (!priv->scan39) {
5731                         rc = -ENOMEM;
5732                         goto done;
5733                 }
5734         }
5735         scan = priv->scan39;
5736         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
5737
5738         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5739         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5740
5741         if (iwl3945_is_associated(priv)) {
5742                 u16 interval = 0;
5743                 u32 extra;
5744                 u32 suspend_time = 100;
5745                 u32 scan_suspend_time = 100;
5746                 unsigned long flags;
5747
5748                 IWL_DEBUG_INFO("Scanning while associated...\n");
5749
5750                 spin_lock_irqsave(&priv->lock, flags);
5751                 interval = priv->beacon_int;
5752                 spin_unlock_irqrestore(&priv->lock, flags);
5753
5754                 scan->suspend_time = 0;
5755                 scan->max_out_time = cpu_to_le32(200 * 1024);
5756                 if (!interval)
5757                         interval = suspend_time;
5758                 /*
5759                  * suspend time format:
5760                  *  0-19: beacon interval in usec (time before exec.)
5761                  * 20-23: 0
5762                  * 24-31: number of beacons (suspend between channels)
5763                  */
5764
5765                 extra = (suspend_time / interval) << 24;
5766                 scan_suspend_time = 0xFF0FFFFF &
5767                     (extra | ((suspend_time % interval) * 1024));
5768
5769                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5770                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5771                                scan_suspend_time, interval);
5772         }
5773
5774         /* We should add the ability for user to lock to PASSIVE ONLY */
5775         if (priv->one_direct_scan) {
5776                 IWL_DEBUG_SCAN
5777                     ("Kicking off one direct scan for '%s'\n",
5778                      print_ssid(ssid, priv->direct_ssid,
5779                                 priv->direct_ssid_len));
5780                 scan->direct_scan[0].id = WLAN_EID_SSID;
5781                 scan->direct_scan[0].len = priv->direct_ssid_len;
5782                 memcpy(scan->direct_scan[0].ssid,
5783                        priv->direct_ssid, priv->direct_ssid_len);
5784                 n_probes++;
5785         } else
5786                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
5787
5788         /* We don't build a direct scan probe request; the uCode will do
5789          * that based on the direct_mask added to each channel entry */
5790         scan->tx_cmd.len = cpu_to_le16(
5791                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
5792                         IWL_MAX_SCAN_SIZE - sizeof(*scan)));
5793         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5794         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
5795         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5796
5797         /* flags + rate selection */
5798
5799         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
5800                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5801                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
5802                 scan->good_CRC_th = 0;
5803                 band = IEEE80211_BAND_2GHZ;
5804         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
5805                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
5806                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5807                 band = IEEE80211_BAND_5GHZ;
5808         } else {
5809                 IWL_WARN(priv, "Invalid scan band count\n");
5810                 goto done;
5811         }
5812
5813         /* select Rx antennas */
5814         scan->flags |= iwl3945_get_antenna_flags(priv);
5815
5816         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
5817                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5818
5819         scan->channel_count =
5820                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
5821                                               n_probes,
5822                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5823
5824         if (scan->channel_count == 0) {
5825                 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
5826                 goto done;
5827         }
5828
5829         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5830             scan->channel_count * sizeof(struct iwl3945_scan_channel);
5831         cmd.data = scan;
5832         scan->len = cpu_to_le16(cmd.len);
5833
5834         set_bit(STATUS_SCAN_HW, &priv->status);
5835         rc = iwl3945_send_cmd_sync(priv, &cmd);
5836         if (rc)
5837                 goto done;
5838
5839         queue_delayed_work(priv->workqueue, &priv->scan_check,
5840                            IWL_SCAN_CHECK_WATCHDOG);
5841
5842         mutex_unlock(&priv->mutex);
5843         return;
5844
5845  done:
5846         /* can not perform scan make sure we clear scanning
5847          * bits from status so next scan request can be performed.
5848          * if we dont clear scanning status bit here all next scan
5849          * will fail
5850         */
5851         clear_bit(STATUS_SCAN_HW, &priv->status);
5852         clear_bit(STATUS_SCANNING, &priv->status);
5853
5854         /* inform mac80211 scan aborted */
5855         queue_work(priv->workqueue, &priv->scan_completed);
5856         mutex_unlock(&priv->mutex);
5857 }
5858
5859 static void iwl3945_bg_up(struct work_struct *data)
5860 {
5861         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
5862
5863         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5864                 return;
5865
5866         mutex_lock(&priv->mutex);
5867         __iwl3945_up(priv);
5868         mutex_unlock(&priv->mutex);
5869         iwl3945_rfkill_set_hw_state(priv);
5870 }
5871
5872 static void iwl3945_bg_restart(struct work_struct *data)
5873 {
5874         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
5875
5876         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5877                 return;
5878
5879         iwl3945_down(priv);
5880         queue_work(priv->workqueue, &priv->up);
5881 }
5882
5883 static void iwl3945_bg_rx_replenish(struct work_struct *data)
5884 {
5885         struct iwl_priv *priv =
5886             container_of(data, struct iwl_priv, rx_replenish);
5887
5888         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5889                 return;
5890
5891         mutex_lock(&priv->mutex);
5892         iwl3945_rx_replenish(priv);
5893         mutex_unlock(&priv->mutex);
5894 }
5895
5896 #define IWL_DELAY_NEXT_SCAN (HZ*2)
5897
5898 static void iwl3945_post_associate(struct iwl_priv *priv)
5899 {
5900         int rc = 0;
5901         struct ieee80211_conf *conf = NULL;
5902
5903         if (priv->iw_mode == NL80211_IFTYPE_AP) {
5904                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
5905                 return;
5906         }
5907
5908
5909         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
5910                         priv->assoc_id, priv->active39_rxon.bssid_addr);
5911
5912         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5913                 return;
5914
5915         if (!priv->vif || !priv->is_open)
5916                 return;
5917
5918         iwl3945_scan_cancel_timeout(priv, 200);
5919
5920         conf = ieee80211_get_hw_conf(priv->hw);
5921
5922         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5923         iwl3945_commit_rxon(priv);
5924
5925         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
5926         iwl3945_setup_rxon_timing(priv);
5927         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5928                               sizeof(priv->rxon_timing), &priv->rxon_timing);
5929         if (rc)
5930                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
5931                             "Attempting to continue.\n");
5932
5933         priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5934
5935         priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5936
5937         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
5938                         priv->assoc_id, priv->beacon_int);
5939
5940         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5941                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5942         else
5943                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5944
5945         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5946                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
5947                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
5948                 else
5949                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5950
5951                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
5952                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5953
5954         }
5955
5956         iwl3945_commit_rxon(priv);
5957
5958         switch (priv->iw_mode) {
5959         case NL80211_IFTYPE_STATION:
5960                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
5961                 break;
5962
5963         case NL80211_IFTYPE_ADHOC:
5964
5965                 priv->assoc_id = 1;
5966                 iwl3945_add_station(priv, priv->bssid, 0, 0);
5967                 iwl3945_sync_sta(priv, IWL_STA_ID,
5968                                  (priv->band == IEEE80211_BAND_5GHZ) ?
5969                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
5970                                  CMD_ASYNC);
5971                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
5972                 iwl3945_send_beacon_cmd(priv);
5973
5974                 break;
5975
5976         default:
5977                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
5978                            __func__, priv->iw_mode);
5979                 break;
5980         }
5981
5982         iwl3945_activate_qos(priv, 0);
5983
5984         /* we have just associated, don't start scan too early */
5985         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
5986 }
5987
5988 static void iwl3945_bg_abort_scan(struct work_struct *work)
5989 {
5990         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
5991
5992         if (!iwl_is_ready(priv))
5993                 return;
5994
5995         mutex_lock(&priv->mutex);
5996
5997         set_bit(STATUS_SCAN_ABORTING, &priv->status);
5998         iwl3945_send_scan_abort(priv);
5999
6000         mutex_unlock(&priv->mutex);
6001 }
6002
6003 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
6004
6005 static void iwl3945_bg_scan_completed(struct work_struct *work)
6006 {
6007         struct iwl_priv *priv =
6008             container_of(work, struct iwl_priv, scan_completed);
6009
6010         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6011
6012         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6013                 return;
6014
6015         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6016                 iwl3945_mac_config(priv->hw, 0);
6017
6018         ieee80211_scan_completed(priv->hw);
6019
6020         /* Since setting the TXPOWER may have been deferred while
6021          * performing the scan, fire one off */
6022         mutex_lock(&priv->mutex);
6023         iwl3945_hw_reg_send_txpower(priv);
6024         mutex_unlock(&priv->mutex);
6025 }
6026
6027 /*****************************************************************************
6028  *
6029  * mac80211 entry point functions
6030  *
6031  *****************************************************************************/
6032
6033 #define UCODE_READY_TIMEOUT     (2 * HZ)
6034
6035 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6036 {
6037         struct iwl_priv *priv = hw->priv;
6038         int ret;
6039
6040         IWL_DEBUG_MAC80211("enter\n");
6041
6042         if (pci_enable_device(priv->pci_dev)) {
6043                 IWL_ERR(priv, "Fail to pci_enable_device\n");
6044                 return -ENODEV;
6045         }
6046         pci_restore_state(priv->pci_dev);
6047         pci_enable_msi(priv->pci_dev);
6048
6049         ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6050                           DRV_NAME, priv);
6051         if (ret) {
6052                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
6053                 goto out_disable_msi;
6054         }
6055
6056         /* we should be verifying the device is ready to be opened */
6057         mutex_lock(&priv->mutex);
6058
6059         memset(&priv->staging39_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6060         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6061          * ucode filename and max sizes are card-specific. */
6062
6063         if (!priv->ucode_code.len) {
6064                 ret = iwl3945_read_ucode(priv);
6065                 if (ret) {
6066                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
6067                         mutex_unlock(&priv->mutex);
6068                         goto out_release_irq;
6069                 }
6070         }
6071
6072         ret = __iwl3945_up(priv);
6073
6074         mutex_unlock(&priv->mutex);
6075
6076         iwl3945_rfkill_set_hw_state(priv);
6077
6078         if (ret)
6079                 goto out_release_irq;
6080
6081         IWL_DEBUG_INFO("Start UP work.\n");
6082
6083         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6084                 return 0;
6085
6086         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6087          * mac80211 will not be run successfully. */
6088         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6089                         test_bit(STATUS_READY, &priv->status),
6090                         UCODE_READY_TIMEOUT);
6091         if (!ret) {
6092                 if (!test_bit(STATUS_READY, &priv->status)) {
6093                         IWL_ERR(priv,
6094                                 "Wait for START_ALIVE timeout after %dms.\n",
6095                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6096                         ret = -ETIMEDOUT;
6097                         goto out_release_irq;
6098                 }
6099         }
6100
6101         priv->is_open = 1;
6102         IWL_DEBUG_MAC80211("leave\n");
6103         return 0;
6104
6105 out_release_irq:
6106         free_irq(priv->pci_dev->irq, priv);
6107 out_disable_msi:
6108         pci_disable_msi(priv->pci_dev);
6109         pci_disable_device(priv->pci_dev);
6110         priv->is_open = 0;
6111         IWL_DEBUG_MAC80211("leave - failed\n");
6112         return ret;
6113 }
6114
6115 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6116 {
6117         struct iwl_priv *priv = hw->priv;
6118
6119         IWL_DEBUG_MAC80211("enter\n");
6120
6121         if (!priv->is_open) {
6122                 IWL_DEBUG_MAC80211("leave - skip\n");
6123                 return;
6124         }
6125
6126         priv->is_open = 0;
6127
6128         if (iwl_is_ready_rf(priv)) {
6129                 /* stop mac, cancel any scan request and clear
6130                  * RXON_FILTER_ASSOC_MSK BIT
6131                  */
6132                 mutex_lock(&priv->mutex);
6133                 iwl3945_scan_cancel_timeout(priv, 100);
6134                 mutex_unlock(&priv->mutex);
6135         }
6136
6137         iwl3945_down(priv);
6138
6139         flush_workqueue(priv->workqueue);
6140         free_irq(priv->pci_dev->irq, priv);
6141         pci_disable_msi(priv->pci_dev);
6142         pci_save_state(priv->pci_dev);
6143         pci_disable_device(priv->pci_dev);
6144
6145         IWL_DEBUG_MAC80211("leave\n");
6146 }
6147
6148 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
6149 {
6150         struct iwl_priv *priv = hw->priv;
6151
6152         IWL_DEBUG_MAC80211("enter\n");
6153
6154         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6155                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
6156
6157         if (iwl3945_tx_skb(priv, skb))
6158                 dev_kfree_skb_any(skb);
6159
6160         IWL_DEBUG_MAC80211("leave\n");
6161         return NETDEV_TX_OK;
6162 }
6163
6164 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6165                                  struct ieee80211_if_init_conf *conf)
6166 {
6167         struct iwl_priv *priv = hw->priv;
6168         unsigned long flags;
6169
6170         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6171
6172         if (priv->vif) {
6173                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6174                 return -EOPNOTSUPP;
6175         }
6176
6177         spin_lock_irqsave(&priv->lock, flags);
6178         priv->vif = conf->vif;
6179         priv->iw_mode = conf->type;
6180
6181         spin_unlock_irqrestore(&priv->lock, flags);
6182
6183         mutex_lock(&priv->mutex);
6184
6185         if (conf->mac_addr) {
6186                 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
6187                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6188         }
6189
6190         if (iwl_is_ready(priv))
6191                 iwl3945_set_mode(priv, conf->type);
6192
6193         mutex_unlock(&priv->mutex);
6194
6195         IWL_DEBUG_MAC80211("leave\n");
6196         return 0;
6197 }
6198
6199 /**
6200  * iwl3945_mac_config - mac80211 config callback
6201  *
6202  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6203  * be set inappropriately and the driver currently sets the hardware up to
6204  * use it whenever needed.
6205  */
6206 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
6207 {
6208         struct iwl_priv *priv = hw->priv;
6209         const struct iwl_channel_info *ch_info;
6210         struct ieee80211_conf *conf = &hw->conf;
6211         unsigned long flags;
6212         int ret = 0;
6213
6214         mutex_lock(&priv->mutex);
6215         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6216
6217         if (!iwl_is_ready(priv)) {
6218                 IWL_DEBUG_MAC80211("leave - not ready\n");
6219                 ret = -EIO;
6220                 goto out;
6221         }
6222
6223         if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
6224                      test_bit(STATUS_SCANNING, &priv->status))) {
6225                 IWL_DEBUG_MAC80211("leave - scanning\n");
6226                 set_bit(STATUS_CONF_PENDING, &priv->status);
6227                 mutex_unlock(&priv->mutex);
6228                 return 0;
6229         }
6230
6231         spin_lock_irqsave(&priv->lock, flags);
6232
6233         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6234                                            conf->channel->hw_value);
6235         if (!is_channel_valid(ch_info)) {
6236                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6237                                conf->channel->hw_value, conf->channel->band);
6238                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6239                 spin_unlock_irqrestore(&priv->lock, flags);
6240                 ret = -EINVAL;
6241                 goto out;
6242         }
6243
6244         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6245
6246         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6247
6248         /* The list of supported rates and rate mask can be different
6249          * for each phymode; since the phymode may have changed, reset
6250          * the rate mask to what mac80211 lists */
6251         iwl3945_set_rate(priv);
6252
6253         spin_unlock_irqrestore(&priv->lock, flags);
6254
6255 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6256         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6257                 iwl3945_hw_channel_switch(priv, conf->channel);
6258                 goto out;
6259         }
6260 #endif
6261
6262         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6263
6264         if (!conf->radio_enabled) {
6265                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6266                 goto out;
6267         }
6268
6269         if (iwl_is_rfkill(priv)) {
6270                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6271                 ret = -EIO;
6272                 goto out;
6273         }
6274
6275         iwl3945_set_rate(priv);
6276
6277         if (memcmp(&priv->active39_rxon,
6278                    &priv->staging39_rxon, sizeof(priv->staging39_rxon)))
6279                 iwl3945_commit_rxon(priv);
6280         else
6281                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6282
6283         IWL_DEBUG_MAC80211("leave\n");
6284
6285 out:
6286         clear_bit(STATUS_CONF_PENDING, &priv->status);
6287         mutex_unlock(&priv->mutex);
6288         return ret;
6289 }
6290
6291 static void iwl3945_config_ap(struct iwl_priv *priv)
6292 {
6293         int rc = 0;
6294
6295         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6296                 return;
6297
6298         /* The following should be done only at AP bring up */
6299         if (!(iwl3945_is_associated(priv))) {
6300
6301                 /* RXON - unassoc (to set timing command) */
6302                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6303                 iwl3945_commit_rxon(priv);
6304
6305                 /* RXON Timing */
6306                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6307                 iwl3945_setup_rxon_timing(priv);
6308                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6309                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6310                 if (rc)
6311                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
6312                                         "Attempting to continue.\n");
6313
6314                 /* FIXME: what should be the assoc_id for AP? */
6315                 priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6316                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6317                         priv->staging39_rxon.flags |=
6318                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6319                 else
6320                         priv->staging39_rxon.flags &=
6321                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6322
6323                 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6324                         if (priv->assoc_capability &
6325                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6326                                 priv->staging39_rxon.flags |=
6327                                         RXON_FLG_SHORT_SLOT_MSK;
6328                         else
6329                                 priv->staging39_rxon.flags &=
6330                                         ~RXON_FLG_SHORT_SLOT_MSK;
6331
6332                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6333                                 priv->staging39_rxon.flags &=
6334                                         ~RXON_FLG_SHORT_SLOT_MSK;
6335                 }
6336                 /* restore RXON assoc */
6337                 priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6338                 iwl3945_commit_rxon(priv);
6339                 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
6340         }
6341         iwl3945_send_beacon_cmd(priv);
6342
6343         /* FIXME - we need to add code here to detect a totally new
6344          * configuration, reset the AP, unassoc, rxon timing, assoc,
6345          * clear sta table, add BCAST sta... */
6346 }
6347
6348 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6349                                         struct ieee80211_vif *vif,
6350                                         struct ieee80211_if_conf *conf)
6351 {
6352         struct iwl_priv *priv = hw->priv;
6353         int rc;
6354
6355         if (conf == NULL)
6356                 return -EIO;
6357
6358         if (priv->vif != vif) {
6359                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6360                 return 0;
6361         }
6362
6363         /* handle this temporarily here */
6364         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
6365             conf->changed & IEEE80211_IFCC_BEACON) {
6366                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
6367                 if (!beacon)
6368                         return -ENOMEM;
6369                 mutex_lock(&priv->mutex);
6370                 rc = iwl3945_mac_beacon_update(hw, beacon);
6371                 mutex_unlock(&priv->mutex);
6372                 if (rc)
6373                         return rc;
6374         }
6375
6376         if (!iwl_is_alive(priv))
6377                 return -EAGAIN;
6378
6379         mutex_lock(&priv->mutex);
6380
6381         if (conf->bssid)
6382                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
6383
6384 /*
6385  * very dubious code was here; the probe filtering flag is never set:
6386  *
6387         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6388             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6389  */
6390
6391         if (priv->iw_mode == NL80211_IFTYPE_AP) {
6392                 if (!conf->bssid) {
6393                         conf->bssid = priv->mac_addr;
6394                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6395                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
6396                                            conf->bssid);
6397                 }
6398                 if (priv->ibss_beacon)
6399                         dev_kfree_skb(priv->ibss_beacon);
6400
6401                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
6402         }
6403
6404         if (iwl_is_rfkill(priv))
6405                 goto done;
6406
6407         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6408             !is_multicast_ether_addr(conf->bssid)) {
6409                 /* If there is currently a HW scan going on in the background
6410                  * then we need to cancel it else the RXON below will fail. */
6411                 if (iwl3945_scan_cancel_timeout(priv, 100)) {
6412                         IWL_WARN(priv, "Aborted scan still in progress "
6413                                     "after 100ms\n");
6414                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6415                         mutex_unlock(&priv->mutex);
6416                         return -EAGAIN;
6417                 }
6418                 memcpy(priv->staging39_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6419
6420                 /* TODO: Audit driver for usage of these members and see
6421                  * if mac80211 deprecates them (priv->bssid looks like it
6422                  * shouldn't be there, but I haven't scanned the IBSS code
6423                  * to verify) - jpk */
6424                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6425
6426                 if (priv->iw_mode == NL80211_IFTYPE_AP)
6427                         iwl3945_config_ap(priv);
6428                 else {
6429                         rc = iwl3945_commit_rxon(priv);
6430                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
6431                                 iwl3945_add_station(priv,
6432                                         priv->active39_rxon.bssid_addr, 1, 0);
6433                 }
6434
6435         } else {
6436                 iwl3945_scan_cancel_timeout(priv, 100);
6437                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6438                 iwl3945_commit_rxon(priv);
6439         }
6440
6441  done:
6442         IWL_DEBUG_MAC80211("leave\n");
6443         mutex_unlock(&priv->mutex);
6444
6445         return 0;
6446 }
6447
6448 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6449                                  unsigned int changed_flags,
6450                                  unsigned int *total_flags,
6451                                  int mc_count, struct dev_addr_list *mc_list)
6452 {
6453         struct iwl_priv *priv = hw->priv;
6454         __le32 *filter_flags = &priv->staging39_rxon.filter_flags;
6455
6456         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
6457                         changed_flags, *total_flags);
6458
6459         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
6460                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
6461                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
6462                 else
6463                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
6464         }
6465         if (changed_flags & FIF_ALLMULTI) {
6466                 if (*total_flags & FIF_ALLMULTI)
6467                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
6468                 else
6469                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
6470         }
6471         if (changed_flags & FIF_CONTROL) {
6472                 if (*total_flags & FIF_CONTROL)
6473                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
6474                 else
6475                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
6476         }
6477         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
6478                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
6479                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
6480                 else
6481                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
6482         }
6483
6484         /* We avoid iwl_commit_rxon here to commit the new filter flags
6485          * since mac80211 will call ieee80211_hw_config immediately.
6486          * (mc_list is not supported at this time). Otherwise, we need to
6487          * queue a background iwl_commit_rxon work.
6488          */
6489
6490         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
6491                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6492 }
6493
6494 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
6495                                      struct ieee80211_if_init_conf *conf)
6496 {
6497         struct iwl_priv *priv = hw->priv;
6498
6499         IWL_DEBUG_MAC80211("enter\n");
6500
6501         mutex_lock(&priv->mutex);
6502
6503         if (iwl_is_ready_rf(priv)) {
6504                 iwl3945_scan_cancel_timeout(priv, 100);
6505                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6506                 iwl3945_commit_rxon(priv);
6507         }
6508         if (priv->vif == conf->vif) {
6509                 priv->vif = NULL;
6510                 memset(priv->bssid, 0, ETH_ALEN);
6511         }
6512         mutex_unlock(&priv->mutex);
6513
6514         IWL_DEBUG_MAC80211("leave\n");
6515 }
6516
6517 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6518
6519 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
6520                                      struct ieee80211_vif *vif,
6521                                      struct ieee80211_bss_conf *bss_conf,
6522                                      u32 changes)
6523 {
6524         struct iwl_priv *priv = hw->priv;
6525
6526         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6527
6528         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6529                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6530                                    bss_conf->use_short_preamble);
6531                 if (bss_conf->use_short_preamble)
6532                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6533                 else
6534                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6535         }
6536
6537         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6538                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6539                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6540                         priv->staging39_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6541                 else
6542                         priv->staging39_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6543         }
6544
6545         if (changes & BSS_CHANGED_ASSOC) {
6546                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6547                 /* This should never happen as this function should
6548                  * never be called from interrupt context. */
6549                 if (WARN_ON_ONCE(in_interrupt()))
6550                         return;
6551                 if (bss_conf->assoc) {
6552                         priv->assoc_id = bss_conf->aid;
6553                         priv->beacon_int = bss_conf->beacon_int;
6554                         priv->timestamp = bss_conf->timestamp;
6555                         priv->assoc_capability = bss_conf->assoc_capability;
6556                         priv->next_scan_jiffies = jiffies +
6557                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6558                         mutex_lock(&priv->mutex);
6559                         iwl3945_post_associate(priv);
6560                         mutex_unlock(&priv->mutex);
6561                 } else {
6562                         priv->assoc_id = 0;
6563                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6564                 }
6565         } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
6566                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6567                         iwl3945_send_rxon_assoc(priv);
6568         }
6569
6570 }
6571
6572 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6573 {
6574         int rc = 0;
6575         unsigned long flags;
6576         struct iwl_priv *priv = hw->priv;
6577         DECLARE_SSID_BUF(ssid_buf);
6578
6579         IWL_DEBUG_MAC80211("enter\n");
6580
6581         mutex_lock(&priv->mutex);
6582         spin_lock_irqsave(&priv->lock, flags);
6583
6584         if (!iwl_is_ready_rf(priv)) {
6585                 rc = -EIO;
6586                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6587                 goto out_unlock;
6588         }
6589
6590         /* we don't schedule scan within next_scan_jiffies period */
6591         if (priv->next_scan_jiffies &&
6592                         time_after(priv->next_scan_jiffies, jiffies)) {
6593                 rc = -EAGAIN;
6594                 goto out_unlock;
6595         }
6596         /* if we just finished scan ask for delay for a broadcast scan */
6597         if ((len == 0) && priv->last_scan_jiffies &&
6598             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
6599                        jiffies)) {
6600                 rc = -EAGAIN;
6601                 goto out_unlock;
6602         }
6603         if (len) {
6604                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6605                                print_ssid(ssid_buf, ssid, len), (int)len);
6606
6607                 priv->one_direct_scan = 1;
6608                 priv->direct_ssid_len = (u8)
6609                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6610                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6611         } else
6612                 priv->one_direct_scan = 0;
6613
6614         rc = iwl3945_scan_initiate(priv);
6615
6616         IWL_DEBUG_MAC80211("leave\n");
6617
6618 out_unlock:
6619         spin_unlock_irqrestore(&priv->lock, flags);
6620         mutex_unlock(&priv->mutex);
6621
6622         return rc;
6623 }
6624
6625 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6626                            const u8 *local_addr, const u8 *addr,
6627                            struct ieee80211_key_conf *key)
6628 {
6629         struct iwl_priv *priv = hw->priv;
6630         int rc = 0;
6631         u8 sta_id;
6632
6633         IWL_DEBUG_MAC80211("enter\n");
6634
6635         if (iwl3945_mod_params.sw_crypto) {
6636                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6637                 return -EOPNOTSUPP;
6638         }
6639
6640         if (is_zero_ether_addr(addr))
6641                 /* only support pairwise keys */
6642                 return -EOPNOTSUPP;
6643
6644         sta_id = iwl3945_hw_find_station(priv, addr);
6645         if (sta_id == IWL_INVALID_STATION) {
6646                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
6647                                    addr);
6648                 return -EINVAL;
6649         }
6650
6651         mutex_lock(&priv->mutex);
6652
6653         iwl3945_scan_cancel_timeout(priv, 100);
6654
6655         switch (cmd) {
6656         case  SET_KEY:
6657                 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
6658                 if (!rc) {
6659                         iwl3945_set_rxon_hwcrypto(priv, 1);
6660                         iwl3945_commit_rxon(priv);
6661                         key->hw_key_idx = sta_id;
6662                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
6663                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
6664                 }
6665                 break;
6666         case DISABLE_KEY:
6667                 rc = iwl3945_clear_sta_key_info(priv, sta_id);
6668                 if (!rc) {
6669                         iwl3945_set_rxon_hwcrypto(priv, 0);
6670                         iwl3945_commit_rxon(priv);
6671                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6672                 }
6673                 break;
6674         default:
6675                 rc = -EINVAL;
6676         }
6677
6678         IWL_DEBUG_MAC80211("leave\n");
6679         mutex_unlock(&priv->mutex);
6680
6681         return rc;
6682 }
6683
6684 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
6685                            const struct ieee80211_tx_queue_params *params)
6686 {
6687         struct iwl_priv *priv = hw->priv;
6688         unsigned long flags;
6689         int q;
6690
6691         IWL_DEBUG_MAC80211("enter\n");
6692
6693         if (!iwl_is_ready_rf(priv)) {
6694                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6695                 return -EIO;
6696         }
6697
6698         if (queue >= AC_NUM) {
6699                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
6700                 return 0;
6701         }
6702
6703         q = AC_NUM - 1 - queue;
6704
6705         spin_lock_irqsave(&priv->lock, flags);
6706
6707         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
6708         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
6709         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
6710         priv->qos_data.def_qos_parm.ac[q].edca_txop =
6711                         cpu_to_le16((params->txop * 32));
6712
6713         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
6714         priv->qos_data.qos_active = 1;
6715
6716         spin_unlock_irqrestore(&priv->lock, flags);
6717
6718         mutex_lock(&priv->mutex);
6719         if (priv->iw_mode == NL80211_IFTYPE_AP)
6720                 iwl3945_activate_qos(priv, 1);
6721         else if (priv->assoc_id && iwl3945_is_associated(priv))
6722                 iwl3945_activate_qos(priv, 0);
6723
6724         mutex_unlock(&priv->mutex);
6725
6726         IWL_DEBUG_MAC80211("leave\n");
6727         return 0;
6728 }
6729
6730 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
6731                                 struct ieee80211_tx_queue_stats *stats)
6732 {
6733         struct iwl_priv *priv = hw->priv;
6734         int i, avail;
6735         struct iwl_tx_queue *txq;
6736         struct iwl_queue *q;
6737         unsigned long flags;
6738
6739         IWL_DEBUG_MAC80211("enter\n");
6740
6741         if (!iwl_is_ready_rf(priv)) {
6742                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6743                 return -EIO;
6744         }
6745
6746         spin_lock_irqsave(&priv->lock, flags);
6747
6748         for (i = 0; i < AC_NUM; i++) {
6749                 txq = &priv->txq[i];
6750                 q = &txq->q;
6751                 avail = iwl_queue_space(q);
6752
6753                 stats[i].len = q->n_window - avail;
6754                 stats[i].limit = q->n_window - q->high_mark;
6755                 stats[i].count = q->n_window;
6756
6757         }
6758         spin_unlock_irqrestore(&priv->lock, flags);
6759
6760         IWL_DEBUG_MAC80211("leave\n");
6761
6762         return 0;
6763 }
6764
6765 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
6766 {
6767         struct iwl_priv *priv = hw->priv;
6768         unsigned long flags;
6769
6770         mutex_lock(&priv->mutex);
6771         IWL_DEBUG_MAC80211("enter\n");
6772
6773         iwl_reset_qos(priv);
6774
6775         spin_lock_irqsave(&priv->lock, flags);
6776         priv->assoc_id = 0;
6777         priv->assoc_capability = 0;
6778         priv->call_post_assoc_from_beacon = 0;
6779
6780         /* new association get rid of ibss beacon skb */
6781         if (priv->ibss_beacon)
6782                 dev_kfree_skb(priv->ibss_beacon);
6783
6784         priv->ibss_beacon = NULL;
6785
6786         priv->beacon_int = priv->hw->conf.beacon_int;
6787         priv->timestamp = 0;
6788         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
6789                 priv->beacon_int = 0;
6790
6791         spin_unlock_irqrestore(&priv->lock, flags);
6792
6793         if (!iwl_is_ready_rf(priv)) {
6794                 IWL_DEBUG_MAC80211("leave - not ready\n");
6795                 mutex_unlock(&priv->mutex);
6796                 return;
6797         }
6798
6799         /* we are restarting association process
6800          * clear RXON_FILTER_ASSOC_MSK bit
6801         */
6802         if (priv->iw_mode != NL80211_IFTYPE_AP) {
6803                 iwl3945_scan_cancel_timeout(priv, 100);
6804                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6805                 iwl3945_commit_rxon(priv);
6806         }
6807
6808         /* Per mac80211.h: This is only used in IBSS mode... */
6809         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
6810
6811                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
6812                 mutex_unlock(&priv->mutex);
6813                 return;
6814         }
6815
6816         iwl3945_set_rate(priv);
6817
6818         mutex_unlock(&priv->mutex);
6819
6820         IWL_DEBUG_MAC80211("leave\n");
6821
6822 }
6823
6824 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
6825 {
6826         struct iwl_priv *priv = hw->priv;
6827         unsigned long flags;
6828
6829         IWL_DEBUG_MAC80211("enter\n");
6830
6831         if (!iwl_is_ready_rf(priv)) {
6832                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6833                 return -EIO;
6834         }
6835
6836         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
6837                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
6838                 return -EIO;
6839         }
6840
6841         spin_lock_irqsave(&priv->lock, flags);
6842
6843         if (priv->ibss_beacon)
6844                 dev_kfree_skb(priv->ibss_beacon);
6845
6846         priv->ibss_beacon = skb;
6847
6848         priv->assoc_id = 0;
6849
6850         IWL_DEBUG_MAC80211("leave\n");
6851         spin_unlock_irqrestore(&priv->lock, flags);
6852
6853         iwl_reset_qos(priv);
6854
6855         iwl3945_post_associate(priv);
6856
6857
6858         return 0;
6859 }
6860
6861 /*****************************************************************************
6862  *
6863  * sysfs attributes
6864  *
6865  *****************************************************************************/
6866
6867 #ifdef CONFIG_IWL3945_DEBUG
6868
6869 /*
6870  * The following adds a new attribute to the sysfs representation
6871  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
6872  * used for controlling the debug level.
6873  *
6874  * See the level definitions in iwl for details.
6875  */
6876 static ssize_t show_debug_level(struct device *d,
6877                                 struct device_attribute *attr, char *buf)
6878 {
6879         struct iwl_priv *priv = d->driver_data;
6880
6881         return sprintf(buf, "0x%08X\n", priv->debug_level);
6882 }
6883 static ssize_t store_debug_level(struct device *d,
6884                                 struct device_attribute *attr,
6885                                  const char *buf, size_t count)
6886 {
6887         struct iwl_priv *priv = d->driver_data;
6888         unsigned long val;
6889         int ret;
6890
6891         ret = strict_strtoul(buf, 0, &val);
6892         if (ret)
6893                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
6894         else
6895                 priv->debug_level = val;
6896
6897         return strnlen(buf, count);
6898 }
6899
6900 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
6901                         show_debug_level, store_debug_level);
6902
6903 #endif /* CONFIG_IWL3945_DEBUG */
6904
6905 static ssize_t show_temperature(struct device *d,
6906                                 struct device_attribute *attr, char *buf)
6907 {
6908         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6909
6910         if (!iwl_is_alive(priv))
6911                 return -EAGAIN;
6912
6913         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
6914 }
6915
6916 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
6917
6918 static ssize_t show_tx_power(struct device *d,
6919                              struct device_attribute *attr, char *buf)
6920 {
6921         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6922         return sprintf(buf, "%d\n", priv->user_txpower_limit);
6923 }
6924
6925 static ssize_t store_tx_power(struct device *d,
6926                               struct device_attribute *attr,
6927                               const char *buf, size_t count)
6928 {
6929         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6930         char *p = (char *)buf;
6931         u32 val;
6932
6933         val = simple_strtoul(p, &p, 10);
6934         if (p == buf)
6935                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
6936         else
6937                 iwl3945_hw_reg_set_txpower(priv, val);
6938
6939         return count;
6940 }
6941
6942 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
6943
6944 static ssize_t show_flags(struct device *d,
6945                           struct device_attribute *attr, char *buf)
6946 {
6947         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6948
6949         return sprintf(buf, "0x%04X\n", priv->active39_rxon.flags);
6950 }
6951
6952 static ssize_t store_flags(struct device *d,
6953                            struct device_attribute *attr,
6954                            const char *buf, size_t count)
6955 {
6956         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6957         u32 flags = simple_strtoul(buf, NULL, 0);
6958
6959         mutex_lock(&priv->mutex);
6960         if (le32_to_cpu(priv->staging39_rxon.flags) != flags) {
6961                 /* Cancel any currently running scans... */
6962                 if (iwl3945_scan_cancel_timeout(priv, 100))
6963                         IWL_WARN(priv, "Could not cancel scan.\n");
6964                 else {
6965                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
6966                                        flags);
6967                         priv->staging39_rxon.flags = cpu_to_le32(flags);
6968                         iwl3945_commit_rxon(priv);
6969                 }
6970         }
6971         mutex_unlock(&priv->mutex);
6972
6973         return count;
6974 }
6975
6976 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
6977
6978 static ssize_t show_filter_flags(struct device *d,
6979                                  struct device_attribute *attr, char *buf)
6980 {
6981         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6982
6983         return sprintf(buf, "0x%04X\n",
6984                 le32_to_cpu(priv->active39_rxon.filter_flags));
6985 }
6986
6987 static ssize_t store_filter_flags(struct device *d,
6988                                   struct device_attribute *attr,
6989                                   const char *buf, size_t count)
6990 {
6991         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6992         u32 filter_flags = simple_strtoul(buf, NULL, 0);
6993
6994         mutex_lock(&priv->mutex);
6995         if (le32_to_cpu(priv->staging39_rxon.filter_flags) != filter_flags) {
6996                 /* Cancel any currently running scans... */
6997                 if (iwl3945_scan_cancel_timeout(priv, 100))
6998                         IWL_WARN(priv, "Could not cancel scan.\n");
6999                 else {
7000                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7001                                        "0x%04X\n", filter_flags);
7002                         priv->staging39_rxon.filter_flags =
7003                                 cpu_to_le32(filter_flags);
7004                         iwl3945_commit_rxon(priv);
7005                 }
7006         }
7007         mutex_unlock(&priv->mutex);
7008
7009         return count;
7010 }
7011
7012 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7013                    store_filter_flags);
7014
7015 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7016
7017 static ssize_t show_measurement(struct device *d,
7018                                 struct device_attribute *attr, char *buf)
7019 {
7020         struct iwl_priv *priv = dev_get_drvdata(d);
7021         struct iwl_spectrum_notification measure_report;
7022         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7023         u8 *data = (u8 *)&measure_report;
7024         unsigned long flags;
7025
7026         spin_lock_irqsave(&priv->lock, flags);
7027         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7028                 spin_unlock_irqrestore(&priv->lock, flags);
7029                 return 0;
7030         }
7031         memcpy(&measure_report, &priv->measure_report, size);
7032         priv->measurement_status = 0;
7033         spin_unlock_irqrestore(&priv->lock, flags);
7034
7035         while (size && (PAGE_SIZE - len)) {
7036                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7037                                    PAGE_SIZE - len, 1);
7038                 len = strlen(buf);
7039                 if (PAGE_SIZE - len)
7040                         buf[len++] = '\n';
7041
7042                 ofs += 16;
7043                 size -= min(size, 16U);
7044         }
7045
7046         return len;
7047 }
7048
7049 static ssize_t store_measurement(struct device *d,
7050                                  struct device_attribute *attr,
7051                                  const char *buf, size_t count)
7052 {
7053         struct iwl_priv *priv = dev_get_drvdata(d);
7054         struct ieee80211_measurement_params params = {
7055                 .channel = le16_to_cpu(priv->active39_rxon.channel),
7056                 .start_time = cpu_to_le64(priv->last_tsf),
7057                 .duration = cpu_to_le16(1),
7058         };
7059         u8 type = IWL_MEASURE_BASIC;
7060         u8 buffer[32];
7061         u8 channel;
7062
7063         if (count) {
7064                 char *p = buffer;
7065                 strncpy(buffer, buf, min(sizeof(buffer), count));
7066                 channel = simple_strtoul(p, NULL, 0);
7067                 if (channel)
7068                         params.channel = channel;
7069
7070                 p = buffer;
7071                 while (*p && *p != ' ')
7072                         p++;
7073                 if (*p)
7074                         type = simple_strtoul(p + 1, NULL, 0);
7075         }
7076
7077         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7078                        "channel %d (for '%s')\n", type, params.channel, buf);
7079         iwl3945_get_measurement(priv, &params, type);
7080
7081         return count;
7082 }
7083
7084 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7085                    show_measurement, store_measurement);
7086 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7087
7088 static ssize_t store_retry_rate(struct device *d,
7089                                 struct device_attribute *attr,
7090                                 const char *buf, size_t count)
7091 {
7092         struct iwl_priv *priv = dev_get_drvdata(d);
7093
7094         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7095         if (priv->retry_rate <= 0)
7096                 priv->retry_rate = 1;
7097
7098         return count;
7099 }
7100
7101 static ssize_t show_retry_rate(struct device *d,
7102                                struct device_attribute *attr, char *buf)
7103 {
7104         struct iwl_priv *priv = dev_get_drvdata(d);
7105         return sprintf(buf, "%d", priv->retry_rate);
7106 }
7107
7108 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7109                    store_retry_rate);
7110
7111 static ssize_t store_power_level(struct device *d,
7112                                  struct device_attribute *attr,
7113                                  const char *buf, size_t count)
7114 {
7115         struct iwl_priv *priv = dev_get_drvdata(d);
7116         int rc;
7117         int mode;
7118
7119         mode = simple_strtoul(buf, NULL, 0);
7120         mutex_lock(&priv->mutex);
7121
7122         if (!iwl_is_ready(priv)) {
7123                 rc = -EAGAIN;
7124                 goto out;
7125         }
7126
7127         if ((mode < 1) || (mode > IWL39_POWER_LIMIT) ||
7128             (mode == IWL39_POWER_AC))
7129                 mode = IWL39_POWER_AC;
7130         else
7131                 mode |= IWL_POWER_ENABLED;
7132
7133         if (mode != priv->power_mode) {
7134                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7135                 if (rc) {
7136                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7137                         goto out;
7138                 }
7139                 priv->power_mode = mode;
7140         }
7141
7142         rc = count;
7143
7144  out:
7145         mutex_unlock(&priv->mutex);
7146         return rc;
7147 }
7148
7149 #define MAX_WX_STRING 80
7150
7151 /* Values are in microsecond */
7152 static const s32 timeout_duration[] = {
7153         350000,
7154         250000,
7155         75000,
7156         37000,
7157         25000,
7158 };
7159 static const s32 period_duration[] = {
7160         400000,
7161         700000,
7162         1000000,
7163         1000000,
7164         1000000
7165 };
7166
7167 static ssize_t show_power_level(struct device *d,
7168                                 struct device_attribute *attr, char *buf)
7169 {
7170         struct iwl_priv *priv = dev_get_drvdata(d);
7171         int level = IWL_POWER_LEVEL(priv->power_mode);
7172         char *p = buf;
7173
7174         p += sprintf(p, "%d ", level);
7175         switch (level) {
7176         case IWL_POWER_MODE_CAM:
7177         case IWL39_POWER_AC:
7178                 p += sprintf(p, "(AC)");
7179                 break;
7180         case IWL39_POWER_BATTERY:
7181                 p += sprintf(p, "(BATTERY)");
7182                 break;
7183         default:
7184                 p += sprintf(p,
7185                              "(Timeout %dms, Period %dms)",
7186                              timeout_duration[level - 1] / 1000,
7187                              period_duration[level - 1] / 1000);
7188         }
7189
7190         if (!(priv->power_mode & IWL_POWER_ENABLED))
7191                 p += sprintf(p, " OFF\n");
7192         else
7193                 p += sprintf(p, " \n");
7194
7195         return p - buf + 1;
7196
7197 }
7198
7199 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7200                    store_power_level);
7201
7202 static ssize_t show_channels(struct device *d,
7203                              struct device_attribute *attr, char *buf)
7204 {
7205         /* all this shit doesn't belong into sysfs anyway */
7206         return 0;
7207 }
7208
7209 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7210
7211 static ssize_t show_statistics(struct device *d,
7212                                struct device_attribute *attr, char *buf)
7213 {
7214         struct iwl_priv *priv = dev_get_drvdata(d);
7215         u32 size = sizeof(struct iwl3945_notif_statistics);
7216         u32 len = 0, ofs = 0;
7217         u8 *data = (u8 *)&priv->statistics_39;
7218         int rc = 0;
7219
7220         if (!iwl_is_alive(priv))
7221                 return -EAGAIN;
7222
7223         mutex_lock(&priv->mutex);
7224         rc = iwl3945_send_statistics_request(priv);
7225         mutex_unlock(&priv->mutex);
7226
7227         if (rc) {
7228                 len = sprintf(buf,
7229                               "Error sending statistics request: 0x%08X\n", rc);
7230                 return len;
7231         }
7232
7233         while (size && (PAGE_SIZE - len)) {
7234                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7235                                    PAGE_SIZE - len, 1);
7236                 len = strlen(buf);
7237                 if (PAGE_SIZE - len)
7238                         buf[len++] = '\n';
7239
7240                 ofs += 16;
7241                 size -= min(size, 16U);
7242         }
7243
7244         return len;
7245 }
7246
7247 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7248
7249 static ssize_t show_antenna(struct device *d,
7250                             struct device_attribute *attr, char *buf)
7251 {
7252         struct iwl_priv *priv = dev_get_drvdata(d);
7253
7254         if (!iwl_is_alive(priv))
7255                 return -EAGAIN;
7256
7257         return sprintf(buf, "%d\n", priv->antenna);
7258 }
7259
7260 static ssize_t store_antenna(struct device *d,
7261                              struct device_attribute *attr,
7262                              const char *buf, size_t count)
7263 {
7264         int ant;
7265         struct iwl_priv *priv = dev_get_drvdata(d);
7266
7267         if (count == 0)
7268                 return 0;
7269
7270         if (sscanf(buf, "%1i", &ant) != 1) {
7271                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7272                 return count;
7273         }
7274
7275         if ((ant >= 0) && (ant <= 2)) {
7276                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7277                 priv->antenna = (enum iwl3945_antenna)ant;
7278         } else
7279                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7280
7281
7282         return count;
7283 }
7284
7285 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7286
7287 static ssize_t show_status(struct device *d,
7288                            struct device_attribute *attr, char *buf)
7289 {
7290         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7291         if (!iwl_is_alive(priv))
7292                 return -EAGAIN;
7293         return sprintf(buf, "0x%08x\n", (int)priv->status);
7294 }
7295
7296 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7297
7298 static ssize_t dump_error_log(struct device *d,
7299                               struct device_attribute *attr,
7300                               const char *buf, size_t count)
7301 {
7302         char *p = (char *)buf;
7303
7304         if (p[0] == '1')
7305                 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7306
7307         return strnlen(buf, count);
7308 }
7309
7310 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7311
7312 static ssize_t dump_event_log(struct device *d,
7313                               struct device_attribute *attr,
7314                               const char *buf, size_t count)
7315 {
7316         char *p = (char *)buf;
7317
7318         if (p[0] == '1')
7319                 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7320
7321         return strnlen(buf, count);
7322 }
7323
7324 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7325
7326 /*****************************************************************************
7327  *
7328  * driver setup and tear down
7329  *
7330  *****************************************************************************/
7331
7332 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
7333 {
7334         priv->workqueue = create_workqueue(DRV_NAME);
7335
7336         init_waitqueue_head(&priv->wait_command_queue);
7337
7338         INIT_WORK(&priv->up, iwl3945_bg_up);
7339         INIT_WORK(&priv->restart, iwl3945_bg_restart);
7340         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7341         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7342         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7343         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7344         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7345         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7346         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7347         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7348         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7349
7350         iwl3945_hw_setup_deferred_work(priv);
7351
7352         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7353                      iwl3945_irq_tasklet, (unsigned long)priv);
7354 }
7355
7356 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
7357 {
7358         iwl3945_hw_cancel_deferred_work(priv);
7359
7360         cancel_delayed_work_sync(&priv->init_alive_start);
7361         cancel_delayed_work(&priv->scan_check);
7362         cancel_delayed_work(&priv->alive_start);
7363         cancel_work_sync(&priv->beacon_update);
7364 }
7365
7366 static struct attribute *iwl3945_sysfs_entries[] = {
7367         &dev_attr_antenna.attr,
7368         &dev_attr_channels.attr,
7369         &dev_attr_dump_errors.attr,
7370         &dev_attr_dump_events.attr,
7371         &dev_attr_flags.attr,
7372         &dev_attr_filter_flags.attr,
7373 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7374         &dev_attr_measurement.attr,
7375 #endif
7376         &dev_attr_power_level.attr,
7377         &dev_attr_retry_rate.attr,
7378         &dev_attr_statistics.attr,
7379         &dev_attr_status.attr,
7380         &dev_attr_temperature.attr,
7381         &dev_attr_tx_power.attr,
7382 #ifdef CONFIG_IWL3945_DEBUG
7383         &dev_attr_debug_level.attr,
7384 #endif
7385         NULL
7386 };
7387
7388 static struct attribute_group iwl3945_attribute_group = {
7389         .name = NULL,           /* put in device directory */
7390         .attrs = iwl3945_sysfs_entries,
7391 };
7392
7393 static struct ieee80211_ops iwl3945_hw_ops = {
7394         .tx = iwl3945_mac_tx,
7395         .start = iwl3945_mac_start,
7396         .stop = iwl3945_mac_stop,
7397         .add_interface = iwl3945_mac_add_interface,
7398         .remove_interface = iwl3945_mac_remove_interface,
7399         .config = iwl3945_mac_config,
7400         .config_interface = iwl3945_mac_config_interface,
7401         .configure_filter = iwl3945_configure_filter,
7402         .set_key = iwl3945_mac_set_key,
7403         .get_tx_stats = iwl3945_mac_get_tx_stats,
7404         .conf_tx = iwl3945_mac_conf_tx,
7405         .reset_tsf = iwl3945_mac_reset_tsf,
7406         .bss_info_changed = iwl3945_bss_info_changed,
7407         .hw_scan = iwl3945_mac_hw_scan
7408 };
7409
7410 int iwl3945_init_drv(struct iwl_priv *priv)
7411 {
7412         int ret;
7413
7414         priv->retry_rate = 1;
7415         priv->ibss_beacon = NULL;
7416
7417         spin_lock_init(&priv->lock);
7418         spin_lock_init(&priv->power_data.lock);
7419         spin_lock_init(&priv->sta_lock);
7420         spin_lock_init(&priv->hcmd_lock);
7421
7422         INIT_LIST_HEAD(&priv->free_frames);
7423
7424         mutex_init(&priv->mutex);
7425
7426         /* Clear the driver's (not device's) station table */
7427         iwl3945_clear_stations_table(priv);
7428
7429         priv->data_retry_limit = -1;
7430         priv->ieee_channels = NULL;
7431         priv->ieee_rates = NULL;
7432         priv->band = IEEE80211_BAND_2GHZ;
7433
7434         priv->iw_mode = NL80211_IFTYPE_STATION;
7435
7436         iwl_reset_qos(priv);
7437
7438         priv->qos_data.qos_active = 0;
7439         priv->qos_data.qos_cap.val = 0;
7440
7441         priv->rates_mask = IWL_RATES_MASK;
7442         /* If power management is turned on, default to AC mode */
7443         priv->power_mode = IWL_POWER_AC;
7444         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
7445
7446         ret = iwl3945_init_channel_map(priv);
7447         if (ret) {
7448                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
7449                 goto err;
7450         }
7451
7452         ret = iwl3945_init_geos(priv);
7453         if (ret) {
7454                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
7455                 goto err_free_channel_map;
7456         }
7457
7458         return 0;
7459
7460 err_free_channel_map:
7461         iwl3945_free_channel_map(priv);
7462 err:
7463         return ret;
7464 }
7465
7466 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7467 {
7468         int err = 0;
7469         struct iwl_priv *priv;
7470         struct ieee80211_hw *hw;
7471         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7472         unsigned long flags;
7473
7474         /***********************
7475          * 1. Allocating HW data
7476          * ********************/
7477
7478         /* mac80211 allocates memory for this device instance, including
7479          *   space for this driver's private structure */
7480         hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
7481         if (hw == NULL) {
7482                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
7483                 err = -ENOMEM;
7484                 goto out;
7485         }
7486         priv = hw->priv;
7487         SET_IEEE80211_DEV(hw, &pdev->dev);
7488
7489         if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
7490              (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
7491                 IWL_ERR(priv,
7492                         "invalid queues_num, should be between %d and %d\n",
7493                         IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7494                 err = -EINVAL;
7495                 goto out;
7496         }
7497
7498         /*
7499          * Disabling hardware scan means that mac80211 will perform scans
7500          * "the hard way", rather than using device's scan.
7501          */
7502         if (iwl3945_mod_params.disable_hw_scan) {
7503                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7504                 iwl3945_hw_ops.hw_scan = NULL;
7505         }
7506
7507
7508         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7509         priv->cfg = cfg;
7510         priv->pci_dev = pdev;
7511
7512 #ifdef CONFIG_IWL3945_DEBUG
7513         priv->debug_level = iwl3945_mod_params.debug;
7514         atomic_set(&priv->restrict_refcnt, 0);
7515 #endif
7516         hw->rate_control_algorithm = "iwl-3945-rs";
7517         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7518
7519         /* Select antenna (may be helpful if only one antenna is connected) */
7520         priv->antenna = (enum iwl3945_antenna)iwl3945_mod_params.antenna;
7521
7522         /* Tell mac80211 our characteristics */
7523         hw->flags = IEEE80211_HW_SIGNAL_DBM |
7524                     IEEE80211_HW_NOISE_DBM;
7525
7526         hw->wiphy->interface_modes =
7527                 BIT(NL80211_IFTYPE_STATION) |
7528                 BIT(NL80211_IFTYPE_ADHOC);
7529
7530         hw->wiphy->fw_handles_regulatory = true;
7531
7532         /* 4 EDCA QOS priorities */
7533         hw->queues = 4;
7534
7535         /***************************
7536          * 2. Initializing PCI bus
7537          * *************************/
7538         if (pci_enable_device(pdev)) {
7539                 err = -ENODEV;
7540                 goto out_ieee80211_free_hw;
7541         }
7542
7543         pci_set_master(pdev);
7544
7545         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7546         if (!err)
7547                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7548         if (err) {
7549                 IWL_WARN(priv, "No suitable DMA available.\n");
7550                 goto out_pci_disable_device;
7551         }
7552
7553         pci_set_drvdata(pdev, priv);
7554         err = pci_request_regions(pdev, DRV_NAME);
7555         if (err)
7556                 goto out_pci_disable_device;
7557
7558         /***********************
7559          * 3. Read REV Register
7560          * ********************/
7561         priv->hw_base = pci_iomap(pdev, 0, 0);
7562         if (!priv->hw_base) {
7563                 err = -ENODEV;
7564                 goto out_pci_release_regions;
7565         }
7566
7567         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7568                         (unsigned long long) pci_resource_len(pdev, 0));
7569         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7570
7571         /* We disable the RETRY_TIMEOUT register (0x41) to keep
7572          * PCI Tx retries from interfering with C3 CPU state */
7573         pci_write_config_byte(pdev, 0x41, 0x00);
7574
7575         /* amp init */
7576         err = priv->cfg->ops->lib->apm_ops.init(priv);
7577         if (err < 0) {
7578                 IWL_DEBUG_INFO("Failed to init APMG\n");
7579                 goto out_iounmap;
7580         }
7581
7582         /***********************
7583          * 4. Read EEPROM
7584          * ********************/
7585
7586         /* Read the EEPROM */
7587         err = iwl3945_eeprom_init(priv);
7588         if (err) {
7589                 IWL_ERR(priv, "Unable to init EEPROM\n");
7590                 goto out_remove_sysfs;
7591         }
7592         /* MAC Address location in EEPROM same for 3945/4965 */
7593         get_eeprom_mac(priv, priv->mac_addr);
7594         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
7595         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7596
7597         /***********************
7598          * 5. Setup HW Constants
7599          * ********************/
7600         /* Device-specific setup */
7601         if (iwl3945_hw_set_hw_params(priv)) {
7602                 IWL_ERR(priv, "failed to set hw settings\n");
7603                 goto out_iounmap;
7604         }
7605
7606         /***********************
7607          * 6. Setup priv
7608          * ********************/
7609
7610         err = iwl3945_init_drv(priv);
7611         if (err) {
7612                 IWL_ERR(priv, "initializing driver failed\n");
7613                 goto out_free_geos;
7614         }
7615
7616         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
7617                 priv->cfg->name);
7618
7619         /***********************************
7620          * 7. Initialize Module Parameters
7621          * **********************************/
7622
7623         /* Initialize module parameter values here */
7624         /* Disable radio (SW RF KILL) via parameter when loading driver */
7625         if (iwl3945_mod_params.disable) {
7626                 set_bit(STATUS_RF_KILL_SW, &priv->status);
7627                 IWL_DEBUG_INFO("Radio disabled.\n");
7628         }
7629
7630
7631         /***********************
7632          * 8. Setup Services
7633          * ********************/
7634
7635         spin_lock_irqsave(&priv->lock, flags);
7636         iwl3945_disable_interrupts(priv);
7637         spin_unlock_irqrestore(&priv->lock, flags);
7638
7639         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7640         if (err) {
7641                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
7642                 goto out_release_irq;
7643         }
7644
7645         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
7646         iwl3945_setup_deferred_work(priv);
7647         iwl3945_setup_rx_handlers(priv);
7648
7649         /***********************
7650          * 9. Conclude
7651          * ********************/
7652         pci_save_state(pdev);
7653         pci_disable_device(pdev);
7654
7655         /*********************************
7656          * 10. Setup and Register mac80211
7657          * *******************************/
7658
7659         err = ieee80211_register_hw(priv->hw);
7660         if (err) {
7661                 IWL_ERR(priv, "Failed to register network device: %d\n", err);
7662                 goto  out_remove_sysfs;
7663         }
7664
7665         priv->hw->conf.beacon_int = 100;
7666         priv->mac80211_registered = 1;
7667
7668         err = iwl3945_rfkill_init(priv);
7669         if (err)
7670                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
7671                                   "Ignoring error: %d\n", err);
7672
7673         return 0;
7674
7675  out_remove_sysfs:
7676         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7677  out_free_geos:
7678         iwl3945_free_geos(priv);
7679
7680  out_release_irq:
7681         destroy_workqueue(priv->workqueue);
7682         priv->workqueue = NULL;
7683         iwl3945_unset_hw_params(priv);
7684
7685  out_iounmap:
7686         pci_iounmap(pdev, priv->hw_base);
7687  out_pci_release_regions:
7688         pci_release_regions(pdev);
7689  out_pci_disable_device:
7690         pci_disable_device(pdev);
7691         pci_set_drvdata(pdev, NULL);
7692  out_ieee80211_free_hw:
7693         ieee80211_free_hw(priv->hw);
7694  out:
7695         return err;
7696 }
7697
7698 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
7699 {
7700         struct iwl_priv *priv = pci_get_drvdata(pdev);
7701         unsigned long flags;
7702
7703         if (!priv)
7704                 return;
7705
7706         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7707
7708         set_bit(STATUS_EXIT_PENDING, &priv->status);
7709
7710         if (priv->mac80211_registered) {
7711                 ieee80211_unregister_hw(priv->hw);
7712                 priv->mac80211_registered = 0;
7713         } else {
7714                 iwl3945_down(priv);
7715         }
7716
7717         /* make sure we flush any pending irq or
7718          * tasklet for the driver
7719          */
7720         spin_lock_irqsave(&priv->lock, flags);
7721         iwl3945_disable_interrupts(priv);
7722         spin_unlock_irqrestore(&priv->lock, flags);
7723
7724         iwl_synchronize_irq(priv);
7725
7726         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7727
7728         iwl3945_rfkill_unregister(priv);
7729         iwl3945_dealloc_ucode_pci(priv);
7730
7731         if (priv->rxq.bd)
7732                 iwl3945_rx_queue_free(priv, &priv->rxq);
7733         iwl3945_hw_txq_ctx_free(priv);
7734
7735         iwl3945_unset_hw_params(priv);
7736         iwl3945_clear_stations_table(priv);
7737
7738         /*netif_stop_queue(dev); */
7739         flush_workqueue(priv->workqueue);
7740
7741         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
7742          * priv->workqueue... so we can't take down the workqueue
7743          * until now... */
7744         destroy_workqueue(priv->workqueue);
7745         priv->workqueue = NULL;
7746
7747         pci_iounmap(pdev, priv->hw_base);
7748         pci_release_regions(pdev);
7749         pci_disable_device(pdev);
7750         pci_set_drvdata(pdev, NULL);
7751
7752         iwl3945_free_channel_map(priv);
7753         iwl3945_free_geos(priv);
7754         kfree(priv->scan39);
7755         if (priv->ibss_beacon)
7756                 dev_kfree_skb(priv->ibss_beacon);
7757
7758         ieee80211_free_hw(priv->hw);
7759 }
7760
7761 #ifdef CONFIG_PM
7762
7763 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
7764 {
7765         struct iwl_priv *priv = pci_get_drvdata(pdev);
7766
7767         if (priv->is_open) {
7768                 set_bit(STATUS_IN_SUSPEND, &priv->status);
7769                 iwl3945_mac_stop(priv->hw);
7770                 priv->is_open = 1;
7771         }
7772
7773         pci_set_power_state(pdev, PCI_D3hot);
7774
7775         return 0;
7776 }
7777
7778 static int iwl3945_pci_resume(struct pci_dev *pdev)
7779 {
7780         struct iwl_priv *priv = pci_get_drvdata(pdev);
7781
7782         pci_set_power_state(pdev, PCI_D0);
7783
7784         if (priv->is_open)
7785                 iwl3945_mac_start(priv->hw);
7786
7787         clear_bit(STATUS_IN_SUSPEND, &priv->status);
7788         return 0;
7789 }
7790
7791 #endif /* CONFIG_PM */
7792
7793 /*************** RFKILL FUNCTIONS **********/
7794 #ifdef CONFIG_IWL3945_RFKILL
7795 /* software rf-kill from user */
7796 static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
7797 {
7798         struct iwl_priv *priv = data;
7799         int err = 0;
7800
7801         if (!priv->rfkill)
7802         return 0;
7803
7804         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7805                 return 0;
7806
7807         IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
7808         mutex_lock(&priv->mutex);
7809
7810         switch (state) {
7811         case RFKILL_STATE_UNBLOCKED:
7812                 if (iwl_is_rfkill_hw(priv)) {
7813                         err = -EBUSY;
7814                         goto out_unlock;
7815                 }
7816                 iwl3945_radio_kill_sw(priv, 0);
7817                 break;
7818         case RFKILL_STATE_SOFT_BLOCKED:
7819                 iwl3945_radio_kill_sw(priv, 1);
7820                 break;
7821         default:
7822                 IWL_WARN(priv, "received unexpected RFKILL state %d\n", state);
7823                 break;
7824         }
7825 out_unlock:
7826         mutex_unlock(&priv->mutex);
7827
7828         return err;
7829 }
7830
7831 int iwl3945_rfkill_init(struct iwl_priv *priv)
7832 {
7833         struct device *device = wiphy_dev(priv->hw->wiphy);
7834         int ret = 0;
7835
7836         BUG_ON(device == NULL);
7837
7838         IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
7839         priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
7840         if (!priv->rfkill) {
7841                 IWL_ERR(priv, "Unable to allocate rfkill device.\n");
7842                 ret = -ENOMEM;
7843                 goto error;
7844         }
7845
7846         priv->rfkill->name = priv->cfg->name;
7847         priv->rfkill->data = priv;
7848         priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
7849         priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
7850         priv->rfkill->user_claim_unsupported = 1;
7851
7852         priv->rfkill->dev.class->suspend = NULL;
7853         priv->rfkill->dev.class->resume = NULL;
7854
7855         ret = rfkill_register(priv->rfkill);
7856         if (ret) {
7857                 IWL_ERR(priv, "Unable to register rfkill: %d\n", ret);
7858                 goto freed_rfkill;
7859         }
7860
7861         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
7862         return ret;
7863
7864 freed_rfkill:
7865         if (priv->rfkill != NULL)
7866                 rfkill_free(priv->rfkill);
7867         priv->rfkill = NULL;
7868
7869 error:
7870         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
7871         return ret;
7872 }
7873
7874 void iwl3945_rfkill_unregister(struct iwl_priv *priv)
7875 {
7876         if (priv->rfkill)
7877                 rfkill_unregister(priv->rfkill);
7878
7879         priv->rfkill = NULL;
7880 }
7881
7882 /* set rf-kill to the right state. */
7883 void iwl3945_rfkill_set_hw_state(struct iwl_priv *priv)
7884 {
7885
7886         if (!priv->rfkill)
7887                 return;
7888
7889         if (iwl_is_rfkill_hw(priv)) {
7890                 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
7891                 return;
7892         }
7893
7894         if (!iwl_is_rfkill_sw(priv))
7895                 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
7896         else
7897                 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
7898 }
7899 #endif
7900
7901 /*****************************************************************************
7902  *
7903  * driver and module entry point
7904  *
7905  *****************************************************************************/
7906
7907 static struct pci_driver iwl3945_driver = {
7908         .name = DRV_NAME,
7909         .id_table = iwl3945_hw_card_ids,
7910         .probe = iwl3945_pci_probe,
7911         .remove = __devexit_p(iwl3945_pci_remove),
7912 #ifdef CONFIG_PM
7913         .suspend = iwl3945_pci_suspend,
7914         .resume = iwl3945_pci_resume,
7915 #endif
7916 };
7917
7918 static int __init iwl3945_init(void)
7919 {
7920
7921         int ret;
7922         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
7923         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
7924
7925         ret = iwl3945_rate_control_register();
7926         if (ret) {
7927                 printk(KERN_ERR DRV_NAME
7928                        "Unable to register rate control algorithm: %d\n", ret);
7929                 return ret;
7930         }
7931
7932         ret = pci_register_driver(&iwl3945_driver);
7933         if (ret) {
7934                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
7935                 goto error_register;
7936         }
7937
7938         return ret;
7939
7940 error_register:
7941         iwl3945_rate_control_unregister();
7942         return ret;
7943 }
7944
7945 static void __exit iwl3945_exit(void)
7946 {
7947         pci_unregister_driver(&iwl3945_driver);
7948         iwl3945_rate_control_unregister();
7949 }
7950
7951 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
7952
7953 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
7954 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
7955 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
7956 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
7957 module_param_named(hwcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
7958 MODULE_PARM_DESC(hwcrypto,
7959                  "using hardware crypto engine (default 0 [software])\n");
7960 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
7961 MODULE_PARM_DESC(debug, "debug output mask");
7962 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
7963 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
7964
7965 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
7966 MODULE_PARM_DESC(queues_num, "number of hw queues.");
7967
7968 module_exit(iwl3945_exit);
7969 module_init(iwl3945_init);