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-commands.h"
  52 #include "iwl-3945.h"
  53 #include "iwl-3945-fh.h"
  54 #include "iwl-helpers.h"
  55 #include "iwl-core.h"
  56 #include "iwl-dev.h"
  57
  58 static int iwl3945_tx_queue_update_write_ptr(struct iwl_priv *priv,
  59                                   struct iwl3945_tx_queue *txq);
  60
  61 /*
  62  * module name, copyright, version, etc.
  63  */
  64
  65 #define DRV_DESCRIPTION \
  66 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  67
  68 #ifdef CONFIG_IWL3945_DEBUG
  69 #define VD "d"
  70 #else
  71 #define VD
  72 #endif
  73
  74 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  75 #define VS "s"
  76 #else
  77 #define VS
  78 #endif
  79
  80 #define IWL39_VERSION "1.2.26k" VD VS
  81 #define DRV_COPYRIGHT   "Copyright(c) 2003-2008 Intel Corporation"
  82 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  83 #define DRV_VERSION     IWL39_VERSION
  84
  85
  86 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  87 MODULE_VERSION(DRV_VERSION);
  88 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  89 MODULE_LICENSE("GPL");
  90
  91  /* module parameters */
  92 struct iwl_mod_params iwl3945_mod_params = {
  93         .num_of_queues = IWL39_MAX_NUM_QUEUES,
  94         /* the rest are 0 by default */
  95 };
  96
  97 static const struct ieee80211_supported_band *iwl3945_get_band(
  98                 struct iwl_priv *priv, enum ieee80211_band band)
  99 {
 100         return priv->hw->wiphy->bands[band];
 101 }
 102
 103 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 104  * DMA services
 105  *
 106  * Theory of operation
 107  *
 108  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 109  * of buffer descriptors, each of which points to one or more data buffers for
 110  * the device to read from or fill.  Driver and device exchange status of each
 111  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 112  * entries in each circular buffer, to protect against confusing empty and full
 113  * queue states.
 114  *
 115  * The device reads or writes the data in the queues via the device's several
 116  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 117  *
 118  * For Tx queue, there are low mark and high mark limits. If, after queuing
 119  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 120  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 121  * Tx queue resumed.
 122  *
 123  * The 3945 operates with six queues:  One receive queue, one transmit queue
 124  * (#4) for sending commands to the device firmware, and four transmit queues
 125  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 126  ***************************************************/
 127
 128 int iwl3945_x2_queue_used(const struct iwl_queue *q, int i)
 129 {
 130         return q->write_ptr > q->read_ptr ?
 131                 (i >= q->read_ptr && i < q->write_ptr) :
 132                 !(i < q->read_ptr && i >= q->write_ptr);
 133 }
 134
 135 /**
 136  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 137  */
 138 static int iwl3945_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
 139                           int count, int slots_num, u32 id)
 140 {
 141         q->n_bd = count;
 142         q->n_window = slots_num;
 143         q->id = id;
 144
 145         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 146          * and iwl_queue_dec_wrap are broken. */
 147         BUG_ON(!is_power_of_2(count));
 148
 149         /* slots_num must be power-of-two size, otherwise
 150          * get_cmd_index is broken. */
 151         BUG_ON(!is_power_of_2(slots_num));
 152
 153         q->low_mark = q->n_window / 4;
 154         if (q->low_mark < 4)
 155                 q->low_mark = 4;
 156
 157         q->high_mark = q->n_window / 8;
 158         if (q->high_mark < 2)
 159                 q->high_mark = 2;
 160
 161         q->write_ptr = q->read_ptr = 0;
 162
 163         return 0;
 164 }
 165
 166 /**
 167  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 168  */
 169 static int iwl3945_tx_queue_alloc(struct iwl_priv *priv,
 170                               struct iwl3945_tx_queue *txq, u32 id)
 171 {
 172         struct pci_dev *dev = priv->pci_dev;
 173
 174         /* Driver private data, only for Tx (not command) queues,
 175          * not shared with device. */
 176         if (id != IWL_CMD_QUEUE_NUM) {
 177                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 178                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 179                 if (!txq->txb) {
 180                         IWL_ERR(priv, "kmalloc for auxiliary BD "
 181                                   "structures failed\n");
 182                         goto error;
 183                 }
 184         } else
 185                 txq->txb = NULL;
 186
 187         /* Circular buffer of transmit frame descriptors (TFDs),
 188          * shared with device */
 189         txq->bd = pci_alloc_consistent(dev,
 190                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 191                         &txq->q.dma_addr);
 192
 193         if (!txq->bd) {
 194                 IWL_ERR(priv, "pci_alloc_consistent(%zd) failed\n",
 195                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 196                 goto error;
 197         }
 198         txq->q.id = id;
 199
 200         return 0;
 201
 202  error:
 203         kfree(txq->txb);
 204         txq->txb = NULL;
 205
 206         return -ENOMEM;
 207 }
 208
 209 /**
 210  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 211  */
 212 int iwl3945_tx_queue_init(struct iwl_priv *priv,
 213                       struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
 214 {
 215         struct pci_dev *dev = priv->pci_dev;
 216         int len;
 217         int rc = 0;
 218
 219         /*
 220          * Alloc buffer array for commands (Tx or other types of commands).
 221          * For the command queue (#4), allocate command space + one big
 222          * command for scan, since scan command is very huge; the system will
 223          * not have two scans at the same time, so only one is needed.
 224          * For data Tx queues (all other queues), no super-size command
 225          * space is needed.
 226          */
 227         len = sizeof(struct iwl_cmd) * slots_num;
 228         if (txq_id == IWL_CMD_QUEUE_NUM)
 229                 len +=  IWL_MAX_SCAN_SIZE;
 230         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 231         if (!txq->cmd)
 232                 return -ENOMEM;
 233
 234         /* Alloc driver data array and TFD circular buffer */
 235         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 236         if (rc) {
 237                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 238
 239                 return -ENOMEM;
 240         }
 241         txq->need_update = 0;
 242
 243         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 244          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 245         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 246
 247         /* Initialize queue high/low-water, head/tail indexes */
 248         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 249
 250         /* Tell device where to find queue, enable DMA channel. */
 251         iwl3945_hw_tx_queue_init(priv, txq);
 252
 253         return 0;
 254 }
 255
 256 /**
 257  * iwl3945_tx_queue_free - Deallocate DMA queue.
 258  * @txq: Transmit queue to deallocate.
 259  *
 260  * Empty queue by removing and destroying all BD's.
 261  * Free all buffers.
 262  * 0-fill, but do not free "txq" descriptor structure.
 263  */
 264 void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl3945_tx_queue *txq)
 265 {
 266         struct iwl_queue *q = &txq->q;
 267         struct pci_dev *dev = priv->pci_dev;
 268         int len;
 269
 270         if (q->n_bd == 0)
 271                 return;
 272
 273         /* first, empty all BD's */
 274         for (; q->write_ptr != q->read_ptr;
 275              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 276                 iwl3945_hw_txq_free_tfd(priv, txq);
 277
 278         len = sizeof(struct iwl_cmd) * q->n_window;
 279         if (q->id == IWL_CMD_QUEUE_NUM)
 280                 len += IWL_MAX_SCAN_SIZE;
 281
 282         /* De-alloc array of command/tx buffers */
 283         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 284
 285         /* De-alloc circular buffer of TFDs */
 286         if (txq->q.n_bd)
 287                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
 288                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 289
 290         /* De-alloc array of per-TFD driver data */
 291         kfree(txq->txb);
 292         txq->txb = NULL;
 293
 294         /* 0-fill queue descriptor structure */
 295         memset(txq, 0, sizeof(*txq));
 296 }
 297
 298 /*************** STATION TABLE MANAGEMENT ****
 299  * mac80211 should be examined to determine if sta_info is duplicating
 300  * the functionality provided here
 301  */
 302
 303 /**************************************************************/
 304 #if 0 /* temporary disable till we add real remove station */
 305 /**
 306  * iwl3945_remove_station - Remove driver's knowledge of station.
 307  *
 308  * NOTE:  This does not remove station from device's station table.
 309  */
 310 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 311 {
 312         int index = IWL_INVALID_STATION;
 313         int i;
 314         unsigned long flags;
 315
 316         spin_lock_irqsave(&priv->sta_lock, flags);
 317
 318         if (is_ap)
 319                 index = IWL_AP_ID;
 320         else if (is_broadcast_ether_addr(addr))
 321                 index = priv->hw_params.bcast_sta_id;
 322         else
 323                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
 324                         if (priv->stations_39[i].used &&
 325                             !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 326                                                 addr)) {
 327                                 index = i;
 328                                 break;
 329                         }
 330
 331         if (unlikely(index == IWL_INVALID_STATION))
 332                 goto out;
 333
 334         if (priv->stations_39[index].used) {
 335                 priv->stations_39[index].used = 0;
 336                 priv->num_stations--;
 337         }
 338
 339         BUG_ON(priv->num_stations < 0);
 340
 341 out:
 342         spin_unlock_irqrestore(&priv->sta_lock, flags);
 343         return 0;
 344 }
 345 #endif
 346
 347 /**
 348  * iwl3945_clear_stations_table - Clear the driver's station table
 349  *
 350  * NOTE:  This does not clear or otherwise alter the device's station table.
 351  */
 352 static void iwl3945_clear_stations_table(struct iwl_priv *priv)
 353 {
 354         unsigned long flags;
 355
 356         spin_lock_irqsave(&priv->sta_lock, flags);
 357
 358         priv->num_stations = 0;
 359         memset(priv->stations_39, 0, sizeof(priv->stations_39));
 360
 361         spin_unlock_irqrestore(&priv->sta_lock, flags);
 362 }
 363
 364 /**
 365  * iwl3945_add_station - Add station to station tables in driver and device
 366  */
 367 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
 368 {
 369         int i;
 370         int index = IWL_INVALID_STATION;
 371         struct iwl3945_station_entry *station;
 372         unsigned long flags_spin;
 373         u8 rate;
 374
 375         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 376         if (is_ap)
 377                 index = IWL_AP_ID;
 378         else if (is_broadcast_ether_addr(addr))
 379                 index = priv->hw_params.bcast_sta_id;
 380         else
 381                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
 382                         if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 383                                                 addr)) {
 384                                 index = i;
 385                                 break;
 386                         }
 387
 388                         if (!priv->stations_39[i].used &&
 389                             index == IWL_INVALID_STATION)
 390                                 index = i;
 391                 }
 392
 393         /* These two conditions has the same outcome but keep them separate
 394           since they have different meaning */
 395         if (unlikely(index == IWL_INVALID_STATION)) {
 396                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 397                 return index;
 398         }
 399
 400         if (priv->stations_39[index].used &&
 401            !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
 402                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 403                 return index;
 404         }
 405
 406         IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
 407         station = &priv->stations_39[index];
 408         station->used = 1;
 409         priv->num_stations++;
 410
 411         /* Set up the REPLY_ADD_STA command to send to device */
 412         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 413         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 414         station->sta.mode = 0;
 415         station->sta.sta.sta_id = index;
 416         station->sta.station_flags = 0;
 417
 418         if (priv->band == IEEE80211_BAND_5GHZ)
 419                 rate = IWL_RATE_6M_PLCP;
 420         else
 421                 rate =  IWL_RATE_1M_PLCP;
 422
 423         /* Turn on both antennas for the station... */
 424         station->sta.rate_n_flags =
 425                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 426
 427         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 428
 429         /* Add station to device's station table */
 430         iwl3945_send_add_station(priv, &station->sta, flags);
 431         return index;
 432
 433 }
 434
 435
 436 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 437
 438 #define IWL_CMD(x) case x: return #x
 439 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 440
 441 /**
 442  * iwl3945_enqueue_hcmd - enqueue a uCode command
 443  * @priv: device private data point
 444  * @cmd: a point to the ucode command structure
 445  *
 446  * The function returns < 0 values to indicate the operation is
 447  * failed. On success, it turns the index (> 0) of command in the
 448  * command queue.
 449  */
 450 static int iwl3945_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 451 {
 452         struct iwl3945_tx_queue *txq = &priv->txq39[IWL_CMD_QUEUE_NUM];
 453         struct iwl_queue *q = &txq->q;
 454         struct iwl3945_tfd_frame *tfd;
 455         u32 *control_flags;
 456         struct iwl_cmd *out_cmd;
 457         u32 idx;
 458         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 459         dma_addr_t phys_addr;
 460         int pad;
 461         u16 count;
 462         int ret;
 463         unsigned long flags;
 464
 465         /* If any of the command structures end up being larger than
 466          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 467          * we will need to increase the size of the TFD entries */
 468         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 469                !(cmd->meta.flags & CMD_SIZE_HUGE));
 470
 471
 472         if (iwl_is_rfkill(priv)) {
 473                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 474                 return -EIO;
 475         }
 476
 477         if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 478                 IWL_ERR(priv, "No space for Tx\n");
 479                 return -ENOSPC;
 480         }
 481
 482         spin_lock_irqsave(&priv->hcmd_lock, flags);
 483
 484         tfd = &txq->bd[q->write_ptr];
 485         memset(tfd, 0, sizeof(*tfd));
 486
 487         control_flags = (u32 *) tfd;
 488
 489         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 490         out_cmd = &txq->cmd[idx];
 491
 492         out_cmd->hdr.cmd = cmd->id;
 493         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 494         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 495
 496         /* At this point, the out_cmd now has all of the incoming cmd
 497          * information */
 498
 499         out_cmd->hdr.flags = 0;
 500         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 501                         INDEX_TO_SEQ(q->write_ptr));
 502         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 503                 out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
 504
 505         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 506                         offsetof(struct iwl_cmd, hdr);
 507         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 508
 509         pad = U32_PAD(cmd->len);
 510         count = TFD_CTL_COUNT_GET(*control_flags);
 511         *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
 512
 513         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 514                      "%d bytes at %d[%d]:%d\n",
 515                      get_cmd_string(out_cmd->hdr.cmd),
 516                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 517                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 518
 519         txq->need_update = 1;
 520
 521         /* Increment and update queue's write index */
 522         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 523         ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
 524
 525         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 526         return ret ? ret : idx;
 527 }
 528
 529 static int iwl3945_send_cmd_async(struct iwl_priv *priv,
 530                                   struct iwl_host_cmd *cmd)
 531 {
 532         int ret;
 533
 534         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 535
 536         /* An asynchronous command can not expect an SKB to be set. */
 537         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 538
 539         /* An asynchronous command MUST have a callback. */
 540         BUG_ON(!cmd->meta.u.callback);
 541
 542         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 543                 return -EBUSY;
 544
 545         ret = iwl3945_enqueue_hcmd(priv, cmd);
 546         if (ret < 0) {
 547                 IWL_ERR(priv,
 548                         "Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 549                         get_cmd_string(cmd->id), ret);
 550                 return ret;
 551         }
 552         return 0;
 553 }
 554
 555 static int iwl3945_send_cmd_sync(struct iwl_priv *priv,
 556                                  struct iwl_host_cmd *cmd)
 557 {
 558         int cmd_idx;
 559         int ret;
 560
 561         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 562
 563          /* A synchronous command can not have a callback set. */
 564         BUG_ON(cmd->meta.u.callback != NULL);
 565
 566         if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
 567                 IWL_ERR(priv,
 568                         "Error sending %s: Already sending a host command\n",
 569                         get_cmd_string(cmd->id));
 570                 ret = -EBUSY;
 571                 goto out;
 572         }
 573
 574         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 575
 576         if (cmd->meta.flags & CMD_WANT_SKB)
 577                 cmd->meta.source = &cmd->meta;
 578
 579         cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
 580         if (cmd_idx < 0) {
 581                 ret = cmd_idx;
 582                 IWL_ERR(priv,
 583                         "Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 584                         get_cmd_string(cmd->id), ret);
 585                 goto out;
 586         }
 587
 588         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 589                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 590                         HOST_COMPLETE_TIMEOUT);
 591         if (!ret) {
 592                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 593                         IWL_ERR(priv, "Error sending %s: time out after %dms\n",
 594                                   get_cmd_string(cmd->id),
 595                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 596
 597                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 598                         ret = -ETIMEDOUT;
 599                         goto cancel;
 600                 }
 601         }
 602
 603         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 604                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 605                                get_cmd_string(cmd->id));
 606                 ret = -ECANCELED;
 607                 goto fail;
 608         }
 609         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 610                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 611                                get_cmd_string(cmd->id));
 612                 ret = -EIO;
 613                 goto fail;
 614         }
 615         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 616                 IWL_ERR(priv, "Error: Response NULL in '%s'\n",
 617                           get_cmd_string(cmd->id));
 618                 ret = -EIO;
 619                 goto cancel;
 620         }
 621
 622         ret = 0;
 623         goto out;
 624
 625 cancel:
 626         if (cmd->meta.flags & CMD_WANT_SKB) {
 627                 struct iwl_cmd *qcmd;
 628
 629                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 630                  * TX cmd queue. Otherwise in case the cmd comes
 631                  * in later, it will possibly set an invalid
 632                  * address (cmd->meta.source). */
 633                 qcmd = &priv->txq39[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 634                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 635         }
 636 fail:
 637         if (cmd->meta.u.skb) {
 638                 dev_kfree_skb_any(cmd->meta.u.skb);
 639                 cmd->meta.u.skb = NULL;
 640         }
 641 out:
 642         clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
 643         return ret;
 644 }
 645
 646 int iwl3945_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 647 {
 648         if (cmd->meta.flags & CMD_ASYNC)
 649                 return iwl3945_send_cmd_async(priv, cmd);
 650
 651         return iwl3945_send_cmd_sync(priv, cmd);
 652 }
 653
 654 int iwl3945_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
 655 {
 656         struct iwl_host_cmd cmd = {
 657                 .id = id,
 658                 .len = len,
 659                 .data = data,
 660         };
 661
 662         return iwl3945_send_cmd_sync(priv, &cmd);
 663 }
 664
 665 static int __must_check iwl3945_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
 666 {
 667         struct iwl_host_cmd cmd = {
 668                 .id = id,
 669                 .len = sizeof(val),
 670                 .data = &val,
 671         };
 672
 673         return iwl3945_send_cmd_sync(priv, &cmd);
 674 }
 675
 676 int iwl3945_send_statistics_request(struct iwl_priv *priv)
 677 {
 678         return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 679 }
 680
 681 /**
 682  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 683  * @band: 2.4 or 5 GHz band
 684  * @channel: Any channel valid for the requested band
 685
 686  * In addition to setting the staging RXON, priv->band is also set.
 687  *
 688  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 689  * in the staging RXON flag structure based on the band
 690  */
 691 static int iwl3945_set_rxon_channel(struct iwl_priv *priv,
 692                                     enum ieee80211_band band,
 693                                     u16 channel)
 694 {
 695         if (!iwl3945_get_channel_info(priv, band, channel)) {
 696                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 697                                channel, band);
 698                 return -EINVAL;
 699         }
 700
 701         if ((le16_to_cpu(priv->staging39_rxon.channel) == channel) &&
 702             (priv->band == band))
 703                 return 0;
 704
 705         priv->staging39_rxon.channel = cpu_to_le16(channel);
 706         if (band == IEEE80211_BAND_5GHZ)
 707                 priv->staging39_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 708         else
 709                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 710
 711         priv->band = band;
 712
 713         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 714
 715         return 0;
 716 }
 717
 718 /**
 719  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 720  *
 721  * NOTE:  This is really only useful during development and can eventually
 722  * be #ifdef'd out once the driver is stable and folks aren't actively
 723  * making changes
 724  */
 725 static int iwl3945_check_rxon_cmd(struct iwl_priv *priv)
 726 {
 727         int error = 0;
 728         int counter = 1;
 729         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
 730
 731         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 732                 error |= le32_to_cpu(rxon->flags &
 733                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 734                                  RXON_FLG_RADAR_DETECT_MSK));
 735                 if (error)
 736                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 737                                     counter++, error);
 738         } else {
 739                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 740                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 741                 if (error)
 742                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 743                                     counter++, error);
 744                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 745                 if (error)
 746                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 747                                     counter++, error);
 748         }
 749         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 750         if (error)
 751                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 752
 753         /* make sure basic rates 6Mbps and 1Mbps are supported */
 754         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 755                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 756         if (error)
 757                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 758
 759         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 760         if (error)
 761                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 762
 763         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 764                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 765         if (error)
 766                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 767                             counter++, error);
 768
 769         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 770                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 771         if (error)
 772                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 773                             counter++, error);
 774
 775         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 776                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 777         if (error)
 778                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 779                             counter++, error);
 780
 781         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 782                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 783                                 RXON_FLG_ANT_A_MSK)) == 0);
 784         if (error)
 785                 IWL_WARN(priv, "check antenna %d %d\n", counter++, error);
 786
 787         if (error)
 788                 IWL_WARN(priv, "Tuning to channel %d\n",
 789                             le16_to_cpu(rxon->channel));
 790
 791         if (error) {
 792                 IWL_ERR(priv, "Not a valid rxon_assoc_cmd field values\n");
 793                 return -1;
 794         }
 795         return 0;
 796 }
 797
 798 /**
 799  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 800  * @priv: staging_rxon is compared to active_rxon
 801  *
 802  * If the RXON structure is changing enough to require a new tune,
 803  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 804  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 805  */
 806 static int iwl3945_full_rxon_required(struct iwl_priv *priv)
 807 {
 808
 809         /* These items are only settable from the full RXON command */
 810         if (!(iwl3945_is_associated(priv)) ||
 811             compare_ether_addr(priv->staging39_rxon.bssid_addr,
 812                                priv->active39_rxon.bssid_addr) ||
 813             compare_ether_addr(priv->staging39_rxon.node_addr,
 814                                priv->active39_rxon.node_addr) ||
 815             compare_ether_addr(priv->staging39_rxon.wlap_bssid_addr,
 816                                priv->active39_rxon.wlap_bssid_addr) ||
 817             (priv->staging39_rxon.dev_type != priv->active39_rxon.dev_type) ||
 818             (priv->staging39_rxon.channel != priv->active39_rxon.channel) ||
 819             (priv->staging39_rxon.air_propagation !=
 820              priv->active39_rxon.air_propagation) ||
 821             (priv->staging39_rxon.assoc_id != priv->active39_rxon.assoc_id))
 822                 return 1;
 823
 824         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 825          * be updated with the RXON_ASSOC command -- however only some
 826          * flag transitions are allowed using RXON_ASSOC */
 827
 828         /* Check if we are not switching bands */
 829         if ((priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 830             (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK))
 831                 return 1;
 832
 833         /* Check if we are switching association toggle */
 834         if ((priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 835                 (priv->active39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 836                 return 1;
 837
 838         return 0;
 839 }
 840
 841 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
 842 {
 843         int rc = 0;
 844         struct iwl_rx_packet *res = NULL;
 845         struct iwl3945_rxon_assoc_cmd rxon_assoc;
 846         struct iwl_host_cmd cmd = {
 847                 .id = REPLY_RXON_ASSOC,
 848                 .len = sizeof(rxon_assoc),
 849                 .meta.flags = CMD_WANT_SKB,
 850                 .data = &rxon_assoc,
 851         };
 852         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging39_rxon;
 853         const struct iwl3945_rxon_cmd *rxon2 = &priv->active39_rxon;
 854
 855         if ((rxon1->flags == rxon2->flags) &&
 856             (rxon1->filter_flags == rxon2->filter_flags) &&
 857             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 858             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 859                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 860                 return 0;
 861         }
 862
 863         rxon_assoc.flags = priv->staging39_rxon.flags;
 864         rxon_assoc.filter_flags = priv->staging39_rxon.filter_flags;
 865         rxon_assoc.ofdm_basic_rates = priv->staging39_rxon.ofdm_basic_rates;
 866         rxon_assoc.cck_basic_rates = priv->staging39_rxon.cck_basic_rates;
 867         rxon_assoc.reserved = 0;
 868
 869         rc = iwl3945_send_cmd_sync(priv, &cmd);
 870         if (rc)
 871                 return rc;
 872
 873         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 874         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 875                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
 876                 rc = -EIO;
 877         }
 878
 879         priv->alloc_rxb_skb--;
 880         dev_kfree_skb_any(cmd.meta.u.skb);
 881
 882         return rc;
 883 }
 884
 885 /**
 886  * iwl3945_commit_rxon - commit staging_rxon to hardware
 887  *
 888  * The RXON command in staging_rxon is committed to the hardware and
 889  * the active_rxon structure is updated with the new data.  This
 890  * function correctly transitions out of the RXON_ASSOC_MSK state if
 891  * a HW tune is required based on the RXON structure changes.
 892  */
 893 static int iwl3945_commit_rxon(struct iwl_priv *priv)
 894 {
 895         /* cast away the const for active_rxon in this function */
 896         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active39_rxon;
 897         int rc = 0;
 898
 899         if (!iwl_is_alive(priv))
 900                 return -1;
 901
 902         /* always get timestamp with Rx frame */
 903         priv->staging39_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 904
 905         /* select antenna */
 906         priv->staging39_rxon.flags &=
 907             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
 908         priv->staging39_rxon.flags |= iwl3945_get_antenna_flags(priv);
 909
 910         rc = iwl3945_check_rxon_cmd(priv);
 911         if (rc) {
 912                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 913                 return -EINVAL;
 914         }
 915
 916         /* If we don't need to send a full RXON, we can use
 917          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
 918          * and other flags for the current radio configuration. */
 919         if (!iwl3945_full_rxon_required(priv)) {
 920                 rc = iwl3945_send_rxon_assoc(priv);
 921                 if (rc) {
 922                         IWL_ERR(priv, "Error setting RXON_ASSOC "
 923                                   "configuration (%d).\n", rc);
 924                         return rc;
 925                 }
 926
 927                 memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
 928
 929                 return 0;
 930         }
 931
 932         /* If we are currently associated and the new config requires
 933          * an RXON_ASSOC and the new config wants the associated mask enabled,
 934          * we must clear the associated from the active configuration
 935          * before we apply the new config */
 936         if (iwl3945_is_associated(priv) &&
 937             (priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 938                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 939                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 940
 941                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
 942                                       sizeof(struct iwl3945_rxon_cmd),
 943                                       &priv->active39_rxon);
 944
 945                 /* If the mask clearing failed then we set
 946                  * active_rxon back to what it was previously */
 947                 if (rc) {
 948                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 949                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
 950                                   "configuration (%d).\n", rc);
 951                         return rc;
 952                 }
 953         }
 954
 955         IWL_DEBUG_INFO("Sending RXON\n"
 956                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 957                        "* channel = %d\n"
 958                        "* bssid = %pM\n",
 959                        ((priv->staging39_rxon.filter_flags &
 960                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 961                        le16_to_cpu(priv->staging39_rxon.channel),
 962                        priv->staging_rxon.bssid_addr);
 963
 964         /* Apply the new configuration */
 965         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
 966                               sizeof(struct iwl3945_rxon_cmd), &priv->staging39_rxon);
 967         if (rc) {
 968                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
 969                 return rc;
 970         }
 971
 972         memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
 973
 974         iwl3945_clear_stations_table(priv);
 975
 976         /* If we issue a new RXON command which required a tune then we must
 977          * send a new TXPOWER command or we won't be able to Tx any frames */
 978         rc = iwl3945_hw_reg_send_txpower(priv);
 979         if (rc) {
 980                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
 981                 return rc;
 982         }
 983
 984         /* Add the broadcast address so we can send broadcast frames */
 985         if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
 986             IWL_INVALID_STATION) {
 987                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
 988                 return -EIO;
 989         }
 990
 991         /* If we have set the ASSOC_MSK and we are in BSS mode then
 992          * add the IWL_AP_ID to the station rate table */
 993         if (iwl3945_is_associated(priv) &&
 994             (priv->iw_mode == NL80211_IFTYPE_STATION))
 995                 if (iwl3945_add_station(priv, priv->active39_rxon.bssid_addr, 1, 0)
 996                     == IWL_INVALID_STATION) {
 997                         IWL_ERR(priv, "Error adding AP address for transmit\n");
 998                         return -EIO;
 999                 }
1000
1001         /* Init the hardware's rate fallback order based on the band */
1002         rc = iwl3945_init_hw_rate_table(priv);
1003         if (rc) {
1004                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
1005                 return -EIO;
1006         }
1007
1008         return 0;
1009 }
1010
1011 static int iwl3945_send_bt_config(struct iwl_priv *priv)
1012 {
1013         struct iwl_bt_cmd bt_cmd = {
1014                 .flags = 3,
1015                 .lead_time = 0xAA,
1016                 .max_kill = 1,
1017                 .kill_ack_mask = 0,
1018                 .kill_cts_mask = 0,
1019         };
1020
1021         return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1022                                         sizeof(bt_cmd), &bt_cmd);
1023 }
1024
1025 static int iwl3945_send_scan_abort(struct iwl_priv *priv)
1026 {
1027         int rc = 0;
1028         struct iwl_rx_packet *res;
1029         struct iwl_host_cmd cmd = {
1030                 .id = REPLY_SCAN_ABORT_CMD,
1031                 .meta.flags = CMD_WANT_SKB,
1032         };
1033
1034         /* If there isn't a scan actively going on in the hardware
1035          * then we are in between scan bands and not actually
1036          * actively scanning, so don't send the abort command */
1037         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1038                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1039                 return 0;
1040         }
1041
1042         rc = iwl3945_send_cmd_sync(priv, &cmd);
1043         if (rc) {
1044                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1045                 return rc;
1046         }
1047
1048         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1049         if (res->u.status != CAN_ABORT_STATUS) {
1050                 /* The scan abort will return 1 for success or
1051                  * 2 for "failure".  A failure condition can be
1052                  * due to simply not being in an active scan which
1053                  * can occur if we send the scan abort before we
1054                  * the microcode has notified us that a scan is
1055                  * completed. */
1056                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1057                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1058                 clear_bit(STATUS_SCAN_HW, &priv->status);
1059         }
1060
1061         dev_kfree_skb_any(cmd.meta.u.skb);
1062
1063         return rc;
1064 }
1065
1066 static int iwl3945_card_state_sync_callback(struct iwl_priv *priv,
1067                                         struct iwl_cmd *cmd,
1068                                         struct sk_buff *skb)
1069 {
1070         return 1;
1071 }
1072
1073 /*
1074  * CARD_STATE_CMD
1075  *
1076  * Use: Sets the device's internal card state to enable, disable, or halt
1077  *
1078  * When in the 'enable' state the card operates as normal.
1079  * When in the 'disable' state, the card enters into a low power mode.
1080  * When in the 'halt' state, the card is shut down and must be fully
1081  * restarted to come back on.
1082  */
1083 static int iwl3945_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1084 {
1085         struct iwl_host_cmd cmd = {
1086                 .id = REPLY_CARD_STATE_CMD,
1087                 .len = sizeof(u32),
1088                 .data = &flags,
1089                 .meta.flags = meta_flag,
1090         };
1091
1092         if (meta_flag & CMD_ASYNC)
1093                 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1094
1095         return iwl3945_send_cmd(priv, &cmd);
1096 }
1097
1098 static int iwl3945_add_sta_sync_callback(struct iwl_priv *priv,
1099                                      struct iwl_cmd *cmd, struct sk_buff *skb)
1100 {
1101         struct iwl_rx_packet *res = NULL;
1102
1103         if (!skb) {
1104                 IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
1105                 return 1;
1106         }
1107
1108         res = (struct iwl_rx_packet *)skb->data;
1109         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1110                 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
1111                           res->hdr.flags);
1112                 return 1;
1113         }
1114
1115         switch (res->u.add_sta.status) {
1116         case ADD_STA_SUCCESS_MSK:
1117                 break;
1118         default:
1119                 break;
1120         }
1121
1122         /* We didn't cache the SKB; let the caller free it */
1123         return 1;
1124 }
1125
1126 int iwl3945_send_add_station(struct iwl_priv *priv,
1127                          struct iwl3945_addsta_cmd *sta, u8 flags)
1128 {
1129         struct iwl_rx_packet *res = NULL;
1130         int rc = 0;
1131         struct iwl_host_cmd cmd = {
1132                 .id = REPLY_ADD_STA,
1133                 .len = sizeof(struct iwl3945_addsta_cmd),
1134                 .meta.flags = flags,
1135                 .data = sta,
1136         };
1137
1138         if (flags & CMD_ASYNC)
1139                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1140         else
1141                 cmd.meta.flags |= CMD_WANT_SKB;
1142
1143         rc = iwl3945_send_cmd(priv, &cmd);
1144
1145         if (rc || (flags & CMD_ASYNC))
1146                 return rc;
1147
1148         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1149         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1150                 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
1151                           res->hdr.flags);
1152                 rc = -EIO;
1153         }
1154
1155         if (rc == 0) {
1156                 switch (res->u.add_sta.status) {
1157                 case ADD_STA_SUCCESS_MSK:
1158                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1159                         break;
1160                 default:
1161                         rc = -EIO;
1162                         IWL_WARN(priv, "REPLY_ADD_STA failed\n");
1163                         break;
1164                 }
1165         }
1166
1167         priv->alloc_rxb_skb--;
1168         dev_kfree_skb_any(cmd.meta.u.skb);
1169
1170         return rc;
1171 }
1172
1173 static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
1174                                    struct ieee80211_key_conf *keyconf,
1175                                    u8 sta_id)
1176 {
1177         unsigned long flags;
1178         __le16 key_flags = 0;
1179
1180         switch (keyconf->alg) {
1181         case ALG_CCMP:
1182                 key_flags |= STA_KEY_FLG_CCMP;
1183                 key_flags |= cpu_to_le16(
1184                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1185                 key_flags &= ~STA_KEY_FLG_INVALID;
1186                 break;
1187         case ALG_TKIP:
1188         case ALG_WEP:
1189         default:
1190                 return -EINVAL;
1191         }
1192         spin_lock_irqsave(&priv->sta_lock, flags);
1193         priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
1194         priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
1195         memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
1196                keyconf->keylen);
1197
1198         memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
1199                keyconf->keylen);
1200         priv->stations_39[sta_id].sta.key.key_flags = key_flags;
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
1204         spin_unlock_irqrestore(&priv->sta_lock, flags);
1205
1206         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1207         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
1208         return 0;
1209 }
1210
1211 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1212 {
1213         unsigned long flags;
1214
1215         spin_lock_irqsave(&priv->sta_lock, flags);
1216         memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1217         memset(&priv->stations_39[sta_id].sta.key, 0,
1218                 sizeof(struct iwl4965_keyinfo));
1219         priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1220         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1221         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1222         spin_unlock_irqrestore(&priv->sta_lock, flags);
1223
1224         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1225         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
1226         return 0;
1227 }
1228
1229 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
1230 {
1231         struct list_head *element;
1232
1233         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1234                        priv->frames_count);
1235
1236         while (!list_empty(&priv->free_frames)) {
1237                 element = priv->free_frames.next;
1238                 list_del(element);
1239                 kfree(list_entry(element, struct iwl3945_frame, list));
1240                 priv->frames_count--;
1241         }
1242
1243         if (priv->frames_count) {
1244                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
1245                             priv->frames_count);
1246                 priv->frames_count = 0;
1247         }
1248 }
1249
1250 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
1251 {
1252         struct iwl3945_frame *frame;
1253         struct list_head *element;
1254         if (list_empty(&priv->free_frames)) {
1255                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1256                 if (!frame) {
1257                         IWL_ERR(priv, "Could not allocate frame!\n");
1258                         return NULL;
1259                 }
1260
1261                 priv->frames_count++;
1262                 return frame;
1263         }
1264
1265         element = priv->free_frames.next;
1266         list_del(element);
1267         return list_entry(element, struct iwl3945_frame, list);
1268 }
1269
1270 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
1271 {
1272         memset(frame, 0, sizeof(*frame));
1273         list_add(&frame->list, &priv->free_frames);
1274 }
1275
1276 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
1277                                 struct ieee80211_hdr *hdr,
1278                                 int left)
1279 {
1280
1281         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1282             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1283              (priv->iw_mode != NL80211_IFTYPE_AP)))
1284                 return 0;
1285
1286         if (priv->ibss_beacon->len > left)
1287                 return 0;
1288
1289         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1290
1291         return priv->ibss_beacon->len;
1292 }
1293
1294 static u8 iwl3945_rate_get_lowest_plcp(struct iwl_priv *priv)
1295 {
1296         u8 i;
1297         int rate_mask;
1298
1299         /* Set rate mask*/
1300         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1301                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1302         else
1303                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
1304
1305         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1306              i = iwl3945_rates[i].next_ieee) {
1307                 if (rate_mask & (1 << i))
1308                         return iwl3945_rates[i].plcp;
1309         }
1310
1311         /* No valid rate was found. Assign the lowest one */
1312         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1313                 return IWL_RATE_1M_PLCP;
1314         else
1315                 return IWL_RATE_6M_PLCP;
1316 }
1317
1318 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
1319 {
1320         struct iwl3945_frame *frame;
1321         unsigned int frame_size;
1322         int rc;
1323         u8 rate;
1324
1325         frame = iwl3945_get_free_frame(priv);
1326
1327         if (!frame) {
1328                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
1329                           "command.\n");
1330                 return -ENOMEM;
1331         }
1332
1333         rate = iwl3945_rate_get_lowest_plcp(priv);
1334
1335         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1336
1337         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1338                               &frame->u.cmd[0]);
1339
1340         iwl3945_free_frame(priv, frame);
1341
1342         return rc;
1343 }
1344
1345 /******************************************************************************
1346  *
1347  * EEPROM related functions
1348  *
1349  ******************************************************************************/
1350
1351 static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1352 {
1353         memcpy(mac, priv->eeprom39.mac_address, 6);
1354 }
1355
1356 /*
1357  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1358  * embedded controller) as EEPROM reader; each read is a series of pulses
1359  * to/from the EEPROM chip, not a single event, so even reads could conflict
1360  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1361  * simply claims ownership, which should be safe when this function is called
1362  * (i.e. before loading uCode!).
1363  */
1364 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
1365 {
1366         _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1367         return 0;
1368 }
1369
1370 /**
1371  * iwl3945_eeprom_init - read EEPROM contents
1372  *
1373  * Load the EEPROM contents from adapter into priv->eeprom39
1374  *
1375  * NOTE:  This routine uses the non-debug IO access functions.
1376  */
1377 int iwl3945_eeprom_init(struct iwl_priv *priv)
1378 {
1379         u16 *e = (u16 *)&priv->eeprom39;
1380         u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1381         int sz = sizeof(priv->eeprom39);
1382         int ret;
1383         u16 addr;
1384
1385         /* The EEPROM structure has several padding buffers within it
1386          * and when adding new EEPROM maps is subject to programmer errors
1387          * which may be very difficult to identify without explicitly
1388          * checking the resulting size of the eeprom map. */
1389         BUILD_BUG_ON(sizeof(priv->eeprom39) != IWL_EEPROM_IMAGE_SIZE);
1390
1391         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1392                 IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
1393                 return -ENOENT;
1394         }
1395
1396         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1397         ret = iwl3945_eeprom_acquire_semaphore(priv);
1398         if (ret < 0) {
1399                 IWL_ERR(priv, "Failed to acquire EEPROM semaphore.\n");
1400                 return -ENOENT;
1401         }
1402
1403         /* eeprom is an array of 16bit values */
1404         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1405                 u32 r;
1406
1407                 _iwl_write32(priv, CSR_EEPROM_REG,
1408                                  CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1409                 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1410                 ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
1411                                               CSR_EEPROM_REG_READ_VALID_MSK,
1412                                               IWL_EEPROM_ACCESS_TIMEOUT);
1413                 if (ret < 0) {
1414                         IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
1415                         return ret;
1416                 }
1417
1418                 r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
1419                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1420         }
1421
1422         return 0;
1423 }
1424
1425 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
1426 {
1427         if (priv->shared_virt)
1428                 pci_free_consistent(priv->pci_dev,
1429                                     sizeof(struct iwl3945_shared),
1430                                     priv->shared_virt,
1431                                     priv->shared_phys);
1432 }
1433
1434 /**
1435  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1436  *
1437  * return : set the bit for each supported rate insert in ie
1438  */
1439 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1440                                     u16 basic_rate, int *left)
1441 {
1442         u16 ret_rates = 0, bit;
1443         int i;
1444         u8 *cnt = ie;
1445         u8 *rates = ie + 1;
1446
1447         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1448                 if (bit & supported_rate) {
1449                         ret_rates |= bit;
1450                         rates[*cnt] = iwl3945_rates[i].ieee |
1451                                 ((bit & basic_rate) ? 0x80 : 0x00);
1452                         (*cnt)++;
1453                         (*left)--;
1454                         if ((*left <= 0) ||
1455                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1456                                 break;
1457                 }
1458         }
1459
1460         return ret_rates;
1461 }
1462
1463 /**
1464  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1465  */
1466 static u16 iwl3945_fill_probe_req(struct iwl_priv *priv,
1467                               struct ieee80211_mgmt *frame,
1468                               int left)
1469 {
1470         int len = 0;
1471         u8 *pos = NULL;
1472         u16 active_rates, ret_rates, cck_rates;
1473
1474         /* Make sure there is enough space for the probe request,
1475          * two mandatory IEs and the data */
1476         left -= 24;
1477         if (left < 0)
1478                 return 0;
1479         len += 24;
1480
1481         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1482         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
1483         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1484         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
1485         frame->seq_ctrl = 0;
1486
1487         /* fill in our indirect SSID IE */
1488         /* ...next IE... */
1489
1490         left -= 2;
1491         if (left < 0)
1492                 return 0;
1493         len += 2;
1494         pos = &(frame->u.probe_req.variable[0]);
1495         *pos++ = WLAN_EID_SSID;
1496         *pos++ = 0;
1497
1498         /* fill in supported rate */
1499         /* ...next IE... */
1500         left -= 2;
1501         if (left < 0)
1502                 return 0;
1503
1504         /* ... fill it in... */
1505         *pos++ = WLAN_EID_SUPP_RATES;
1506         *pos = 0;
1507
1508         priv->active_rate = priv->rates_mask;
1509         active_rates = priv->active_rate;
1510         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1511
1512         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1513         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1514                         priv->active_rate_basic, &left);
1515         active_rates &= ~ret_rates;
1516
1517         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1518                                  priv->active_rate_basic, &left);
1519         active_rates &= ~ret_rates;
1520
1521         len += 2 + *pos;
1522         pos += (*pos) + 1;
1523         if (active_rates == 0)
1524                 goto fill_end;
1525
1526         /* fill in supported extended rate */
1527         /* ...next IE... */
1528         left -= 2;
1529         if (left < 0)
1530                 return 0;
1531         /* ... fill it in... */
1532         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1533         *pos = 0;
1534         iwl3945_supported_rate_to_ie(pos, active_rates,
1535                                  priv->active_rate_basic, &left);
1536         if (*pos > 0)
1537                 len += 2 + *pos;
1538
1539  fill_end:
1540         return (u16)len;
1541 }
1542
1543 /*
1544  * QoS  support
1545 */
1546 static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
1547                                        struct iwl_qosparam_cmd *qos)
1548 {
1549
1550         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1551                                 sizeof(struct iwl_qosparam_cmd), qos);
1552 }
1553
1554 static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
1555 {
1556         unsigned long flags;
1557
1558         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1559                 return;
1560
1561         spin_lock_irqsave(&priv->lock, flags);
1562         priv->qos_data.def_qos_parm.qos_flags = 0;
1563
1564         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1565             !priv->qos_data.qos_cap.q_AP.txop_request)
1566                 priv->qos_data.def_qos_parm.qos_flags |=
1567                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1568
1569         if (priv->qos_data.qos_active)
1570                 priv->qos_data.def_qos_parm.qos_flags |=
1571                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1572
1573         spin_unlock_irqrestore(&priv->lock, flags);
1574
1575         if (force || iwl3945_is_associated(priv)) {
1576                 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
1577                               priv->qos_data.qos_active);
1578
1579                 iwl3945_send_qos_params_command(priv,
1580                                 &(priv->qos_data.def_qos_parm));
1581         }
1582 }
1583
1584 /*
1585  * Power management (not Tx power!) functions
1586  */
1587 #define MSEC_TO_USEC 1024
1588
1589
1590 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1591 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1592 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1593 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1594                                      __constant_cpu_to_le32(X1), \
1595                                      __constant_cpu_to_le32(X2), \
1596                                      __constant_cpu_to_le32(X3), \
1597                                      __constant_cpu_to_le32(X4)}
1598
1599 /* default power management (not Tx power) table values */
1600 /* for TIM  0-10 */
1601 static struct iwl_power_vec_entry range_0[IWL39_POWER_AC] = {
1602         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1603         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1604         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1605         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1606         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1607         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1608 };
1609
1610 /* for TIM > 10 */
1611 static struct iwl_power_vec_entry range_1[IWL39_POWER_AC] = {
1612         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1613         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1614                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1615         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1616                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1617         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1618                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1619         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1620         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1621                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1622 };
1623
1624 int iwl3945_power_init_handle(struct iwl_priv *priv)
1625 {
1626         int rc = 0, i;
1627         struct iwl3945_power_mgr *pow_data;
1628         int size = sizeof(struct iwl_power_vec_entry) * IWL39_POWER_AC;
1629         u16 pci_pm;
1630
1631         IWL_DEBUG_POWER("Initialize power \n");
1632
1633         pow_data = &(priv->power_data_39);
1634
1635         memset(pow_data, 0, sizeof(*pow_data));
1636
1637         pow_data->active_index = IWL_POWER_RANGE_0;
1638         pow_data->dtim_val = 0xffff;
1639
1640         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1641         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1642
1643         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1644         if (rc != 0)
1645                 return 0;
1646         else {
1647                 struct iwl_powertable_cmd *cmd;
1648
1649                 IWL_DEBUG_POWER("adjust power command flags\n");
1650
1651                 for (i = 0; i < IWL39_POWER_AC; i++) {
1652                         cmd = &pow_data->pwr_range_0[i].cmd;
1653
1654                         if (pci_pm & 0x1)
1655                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1656                         else
1657                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1658                 }
1659         }
1660         return rc;
1661 }
1662
1663 static int iwl3945_update_power_cmd(struct iwl_priv *priv,
1664                                 struct iwl_powertable_cmd *cmd, u32 mode)
1665 {
1666         int rc = 0, i;
1667         u8 skip;
1668         u32 max_sleep = 0;
1669         struct iwl_power_vec_entry *range;
1670         u8 period = 0;
1671         struct iwl3945_power_mgr *pow_data;
1672
1673         if (mode > IWL_POWER_INDEX_5) {
1674                 IWL_DEBUG_POWER("Error invalid power mode \n");
1675                 return -1;
1676         }
1677         pow_data = &(priv->power_data_39);
1678
1679         if (pow_data->active_index == IWL_POWER_RANGE_0)
1680                 range = &pow_data->pwr_range_0[0];
1681         else
1682                 range = &pow_data->pwr_range_1[1];
1683
1684         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1685
1686 #ifdef IWL_MAC80211_DISABLE
1687         if (priv->assoc_network != NULL) {
1688                 unsigned long flags;
1689
1690                 period = priv->assoc_network->tim.tim_period;
1691         }
1692 #endif  /*IWL_MAC80211_DISABLE */
1693         skip = range[mode].no_dtim;
1694
1695         if (period == 0) {
1696                 period = 1;
1697                 skip = 0;
1698         }
1699
1700         if (skip == 0) {
1701                 max_sleep = period;
1702                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1703         } else {
1704                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1705                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1706                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1707         }
1708
1709         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1710                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1711                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1712         }
1713
1714         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1715         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1716         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1717         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1718                         le32_to_cpu(cmd->sleep_interval[0]),
1719                         le32_to_cpu(cmd->sleep_interval[1]),
1720                         le32_to_cpu(cmd->sleep_interval[2]),
1721                         le32_to_cpu(cmd->sleep_interval[3]),
1722                         le32_to_cpu(cmd->sleep_interval[4]));
1723
1724         return rc;
1725 }
1726
1727 static int iwl3945_send_power_mode(struct iwl_priv *priv, u32 mode)
1728 {
1729         u32 uninitialized_var(final_mode);
1730         int rc;
1731         struct iwl_powertable_cmd cmd;
1732
1733         /* If on battery, set to 3,
1734          * if plugged into AC power, set to CAM ("continuously aware mode"),
1735          * else user level */
1736         switch (mode) {
1737         case IWL39_POWER_BATTERY:
1738                 final_mode = IWL_POWER_INDEX_3;
1739                 break;
1740         case IWL39_POWER_AC:
1741                 final_mode = IWL_POWER_MODE_CAM;
1742                 break;
1743         default:
1744                 final_mode = mode;
1745                 break;
1746         }
1747
1748         iwl3945_update_power_cmd(priv, &cmd, final_mode);
1749
1750         /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1751         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD,
1752                                 sizeof(struct iwl3945_powertable_cmd), &cmd);
1753
1754         if (final_mode == IWL_POWER_MODE_CAM)
1755                 clear_bit(STATUS_POWER_PMI, &priv->status);
1756         else
1757                 set_bit(STATUS_POWER_PMI, &priv->status);
1758
1759         return rc;
1760 }
1761
1762 /**
1763  * iwl3945_scan_cancel - Cancel any currently executing HW scan
1764  *
1765  * NOTE: priv->mutex is not required before calling this function
1766  */
1767 static int iwl3945_scan_cancel(struct iwl_priv *priv)
1768 {
1769         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1770                 clear_bit(STATUS_SCANNING, &priv->status);
1771                 return 0;
1772         }
1773
1774         if (test_bit(STATUS_SCANNING, &priv->status)) {
1775                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1776                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1777                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1778                         queue_work(priv->workqueue, &priv->abort_scan);
1779
1780                 } else
1781                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1782
1783                 return test_bit(STATUS_SCANNING, &priv->status);
1784         }
1785
1786         return 0;
1787 }
1788
1789 /**
1790  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
1791  * @ms: amount of time to wait (in milliseconds) for scan to abort
1792  *
1793  * NOTE: priv->mutex must be held before calling this function
1794  */
1795 static int iwl3945_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1796 {
1797         unsigned long now = jiffies;
1798         int ret;
1799
1800         ret = iwl3945_scan_cancel(priv);
1801         if (ret && ms) {
1802                 mutex_unlock(&priv->mutex);
1803                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1804                                 test_bit(STATUS_SCANNING, &priv->status))
1805                         msleep(1);
1806                 mutex_lock(&priv->mutex);
1807
1808                 return test_bit(STATUS_SCANNING, &priv->status);
1809         }
1810
1811         return ret;
1812 }
1813
1814 #define MAX_UCODE_BEACON_INTERVAL       1024
1815 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1816
1817 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
1818 {
1819         u16 new_val = 0;
1820         u16 beacon_factor = 0;
1821
1822         beacon_factor =
1823             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1824                 / MAX_UCODE_BEACON_INTERVAL;
1825         new_val = beacon_val / beacon_factor;
1826
1827         return cpu_to_le16(new_val);
1828 }
1829
1830 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
1831 {
1832         u64 interval_tm_unit;
1833         u64 tsf, result;
1834         unsigned long flags;
1835         struct ieee80211_conf *conf = NULL;
1836         u16 beacon_int = 0;
1837
1838         conf = ieee80211_get_hw_conf(priv->hw);
1839
1840         spin_lock_irqsave(&priv->lock, flags);
1841         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
1842         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1843
1844         tsf = priv->timestamp;
1845
1846         beacon_int = priv->beacon_int;
1847         spin_unlock_irqrestore(&priv->lock, flags);
1848
1849         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
1850                 if (beacon_int == 0) {
1851                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1852                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1853                 } else {
1854                         priv->rxon_timing.beacon_interval =
1855                                 cpu_to_le16(beacon_int);
1856                         priv->rxon_timing.beacon_interval =
1857                             iwl3945_adjust_beacon_interval(
1858                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1859                 }
1860
1861                 priv->rxon_timing.atim_window = 0;
1862         } else {
1863                 priv->rxon_timing.beacon_interval =
1864                         iwl3945_adjust_beacon_interval(conf->beacon_int);
1865                 /* TODO: we need to get atim_window from upper stack
1866                  * for now we set to 0 */
1867                 priv->rxon_timing.atim_window = 0;
1868         }
1869
1870         interval_tm_unit =
1871                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1872         result = do_div(tsf, interval_tm_unit);
1873         priv->rxon_timing.beacon_init_val =
1874             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1875
1876         IWL_DEBUG_ASSOC
1877             ("beacon interval %d beacon timer %d beacon tim %d\n",
1878                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1879                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1880                 le16_to_cpu(priv->rxon_timing.atim_window));
1881 }
1882
1883 static int iwl3945_scan_initiate(struct iwl_priv *priv)
1884 {
1885         if (!iwl_is_ready_rf(priv)) {
1886                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1887                 return -EIO;
1888         }
1889
1890         if (test_bit(STATUS_SCANNING, &priv->status)) {
1891                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1892                 return -EAGAIN;
1893         }
1894
1895         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1896                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1897                                "Queuing.\n");
1898                 return -EAGAIN;
1899         }
1900
1901         IWL_DEBUG_INFO("Starting scan...\n");
1902         if (priv->cfg->sku & IWL_SKU_G)
1903                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
1904         if (priv->cfg->sku & IWL_SKU_A)
1905                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
1906         set_bit(STATUS_SCANNING, &priv->status);
1907         priv->scan_start = jiffies;
1908         priv->scan_pass_start = priv->scan_start;
1909
1910         queue_work(priv->workqueue, &priv->request_scan);
1911
1912         return 0;
1913 }
1914
1915 static int iwl3945_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
1916 {
1917         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
1918
1919         if (hw_decrypt)
1920                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
1921         else
1922                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
1923
1924         return 0;
1925 }
1926
1927 static void iwl3945_set_flags_for_phymode(struct iwl_priv *priv,
1928                                           enum ieee80211_band band)
1929 {
1930         if (band == IEEE80211_BAND_5GHZ) {
1931                 priv->staging39_rxon.flags &=
1932                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1933                       | RXON_FLG_CCK_MSK);
1934                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1935         } else {
1936                 /* Copied from iwl3945_bg_post_associate() */
1937                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1938                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1939                 else
1940                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1941
1942                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1943                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1944
1945                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1946                 priv->staging39_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1947                 priv->staging39_rxon.flags &= ~RXON_FLG_CCK_MSK;
1948         }
1949 }
1950
1951 /*
1952  * initialize rxon structure with default values from eeprom
1953  */
1954 static void iwl3945_connection_init_rx_config(struct iwl_priv *priv,
1955                                               int mode)
1956 {
1957         const struct iwl_channel_info *ch_info;
1958
1959         memset(&priv->staging39_rxon, 0, sizeof(priv->staging39_rxon));
1960
1961         switch (mode) {
1962         case NL80211_IFTYPE_AP:
1963                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_AP;
1964                 break;
1965
1966         case NL80211_IFTYPE_STATION:
1967                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_ESS;
1968                 priv->staging39_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1969                 break;
1970
1971         case NL80211_IFTYPE_ADHOC:
1972                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1973                 priv->staging39_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1974                 priv->staging39_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1975                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1976                 break;
1977
1978         case NL80211_IFTYPE_MONITOR:
1979                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1980                 priv->staging39_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1981                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1982                 break;
1983         default:
1984                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1985                 break;
1986         }
1987
1988 #if 0
1989         /* TODO:  Figure out when short_preamble would be set and cache from
1990          * that */
1991         if (!hw_to_local(priv->hw)->short_preamble)
1992                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1993         else
1994                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1995 #endif
1996
1997         ch_info = iwl3945_get_channel_info(priv, priv->band,
1998                                        le16_to_cpu(priv->active39_rxon.channel));
1999
2000         if (!ch_info)
2001                 ch_info = &priv->channel_info[0];
2002
2003         /*
2004          * in some case A channels are all non IBSS
2005          * in this case force B/G channel
2006          */
2007         if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
2008                 ch_info = &priv->channel_info[0];
2009
2010         priv->staging39_rxon.channel = cpu_to_le16(ch_info->channel);
2011         if (is_channel_a_band(ch_info))
2012                 priv->band = IEEE80211_BAND_5GHZ;
2013         else
2014                 priv->band = IEEE80211_BAND_2GHZ;
2015
2016         iwl3945_set_flags_for_phymode(priv, priv->band);
2017
2018         priv->staging39_rxon.ofdm_basic_rates =
2019             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2020         priv->staging39_rxon.cck_basic_rates =
2021             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2022 }
2023
2024 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
2025 {
2026         if (mode == NL80211_IFTYPE_ADHOC) {
2027                 const struct iwl_channel_info *ch_info;
2028
2029                 ch_info = iwl3945_get_channel_info(priv,
2030                         priv->band,
2031                         le16_to_cpu(priv->staging39_rxon.channel));
2032
2033                 if (!ch_info || !is_channel_ibss(ch_info)) {
2034                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2035                                   le16_to_cpu(priv->staging39_rxon.channel));
2036                         return -EINVAL;
2037                 }
2038         }
2039
2040         iwl3945_connection_init_rx_config(priv, mode);
2041         memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2042
2043         iwl3945_clear_stations_table(priv);
2044
2045         /* don't commit rxon if rf-kill is on*/
2046         if (!iwl_is_ready_rf(priv))
2047                 return -EAGAIN;
2048
2049         cancel_delayed_work(&priv->scan_check);
2050         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2051                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2052                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2053                 return -EAGAIN;
2054         }
2055
2056         iwl3945_commit_rxon(priv);
2057
2058         return 0;
2059 }
2060
2061 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2062                                       struct ieee80211_tx_info *info,
2063                                       struct iwl_cmd *cmd,
2064                                       struct sk_buff *skb_frag,
2065                                       int last_frag)
2066 {
2067         struct iwl3945_hw_key *keyinfo =
2068             &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
2069
2070         switch (keyinfo->alg) {
2071         case ALG_CCMP:
2072                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2073                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2074                 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
2075                 break;
2076
2077         case ALG_TKIP:
2078 #if 0
2079                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2080
2081                 if (last_frag)
2082                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2083                                8);
2084                 else
2085                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2086 #endif
2087                 break;
2088
2089         case ALG_WEP:
2090                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2091                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2092
2093                 if (keyinfo->keylen == 13)
2094                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2095
2096                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2097
2098                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2099                              "with key %d\n", info->control.hw_key->hw_key_idx);
2100                 break;
2101
2102         default:
2103                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
2104                 break;
2105         }
2106 }
2107
2108 /*
2109  * handle build REPLY_TX command notification.
2110  */
2111 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
2112                                   struct iwl_cmd *cmd,
2113                                   struct ieee80211_tx_info *info,
2114                                   struct ieee80211_hdr *hdr,
2115                                   int is_unicast, u8 std_id)
2116 {
2117         __le16 fc = hdr->frame_control;
2118         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2119         u8 rc_flags = info->control.rates[0].flags;
2120
2121         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2122         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
2123                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2124                 if (ieee80211_is_mgmt(fc))
2125                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2126                 if (ieee80211_is_probe_resp(fc) &&
2127                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2128                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2129         } else {
2130                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2131                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2132         }
2133
2134         cmd->cmd.tx.sta_id = std_id;
2135         if (ieee80211_has_morefrags(fc))
2136                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2137
2138         if (ieee80211_is_data_qos(fc)) {
2139                 u8 *qc = ieee80211_get_qos_ctl(hdr);
2140                 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
2141                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2142         } else {
2143                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2144         }
2145
2146         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
2147                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2148                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2149         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
2150                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2151                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2152         }
2153
2154         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2155                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2156
2157         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2158         if (ieee80211_is_mgmt(fc)) {
2159                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2160                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2161                 else
2162                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2163         } else {
2164                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2165 #ifdef CONFIG_IWL3945_LEDS
2166                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2167 #endif
2168         }
2169
2170         cmd->cmd.tx.driver_txop = 0;
2171         cmd->cmd.tx.tx_flags = tx_flags;
2172         cmd->cmd.tx.next_frame_len = 0;
2173 }
2174
2175 /**
2176  * iwl3945_get_sta_id - Find station's index within station table
2177  */
2178 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2179 {
2180         int sta_id;
2181         u16 fc = le16_to_cpu(hdr->frame_control);
2182
2183         /* If this frame is broadcast or management, use broadcast station id */
2184         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2185             is_multicast_ether_addr(hdr->addr1))
2186                 return priv->hw_params.bcast_sta_id;
2187
2188         switch (priv->iw_mode) {
2189
2190         /* If we are a client station in a BSS network, use the special
2191          * AP station entry (that's the only station we communicate with) */
2192         case NL80211_IFTYPE_STATION:
2193                 return IWL_AP_ID;
2194
2195         /* If we are an AP, then find the station, or use BCAST */
2196         case NL80211_IFTYPE_AP:
2197                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2198                 if (sta_id != IWL_INVALID_STATION)
2199                         return sta_id;
2200                 return priv->hw_params.bcast_sta_id;
2201
2202         /* If this frame is going out to an IBSS network, find the station,
2203          * or create a new station table entry */
2204         case NL80211_IFTYPE_ADHOC: {
2205                 /* Create new station table entry */
2206                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2207                 if (sta_id != IWL_INVALID_STATION)
2208                         return sta_id;
2209
2210                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2211
2212                 if (sta_id != IWL_INVALID_STATION)
2213                         return sta_id;
2214
2215                 IWL_DEBUG_DROP("Station %pM not in station map. "
2216                                "Defaulting to broadcast...\n",
2217                                hdr->addr1);
2218                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2219                 return priv->hw_params.bcast_sta_id;
2220         }
2221         /* If we are in monitor mode, use BCAST. This is required for
2222          * packet injection. */
2223         case NL80211_IFTYPE_MONITOR:
2224                 return priv->hw_params.bcast_sta_id;
2225
2226         default:
2227                 IWL_WARN(priv, "Unknown mode of operation: %d\n",
2228                         priv->iw_mode);
2229                 return priv->hw_params.bcast_sta_id;
2230         }
2231 }
2232
2233 /*
2234  * start REPLY_TX command process
2235  */
2236 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
2237 {
2238         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2239         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2240         struct iwl3945_tfd_frame *tfd;
2241         u32 *control_flags;
2242         int txq_id = skb_get_queue_mapping(skb);
2243         struct iwl3945_tx_queue *txq = NULL;
2244         struct iwl_queue *q = NULL;
2245         dma_addr_t phys_addr;
2246         dma_addr_t txcmd_phys;
2247         struct iwl_cmd *out_cmd = NULL;
2248         u16 len, idx, len_org, hdr_len;
2249         u8 id;
2250         u8 unicast;
2251         u8 sta_id;
2252         u8 tid = 0;
2253         u16 seq_number = 0;
2254         __le16 fc;
2255         u8 wait_write_ptr = 0;
2256         u8 *qc = NULL;
2257         unsigned long flags;
2258         int rc;
2259
2260         spin_lock_irqsave(&priv->lock, flags);
2261         if (iwl_is_rfkill(priv)) {
2262                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2263                 goto drop_unlock;
2264         }
2265
2266         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2267                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
2268                 goto drop_unlock;
2269         }
2270
2271         unicast = !is_multicast_ether_addr(hdr->addr1);
2272         id = 0;
2273
2274         fc = hdr->frame_control;
2275
2276 #ifdef CONFIG_IWL3945_DEBUG
2277         if (ieee80211_is_auth(fc))
2278                 IWL_DEBUG_TX("Sending AUTH frame\n");
2279         else if (ieee80211_is_assoc_req(fc))
2280                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2281         else if (ieee80211_is_reassoc_req(fc))
2282                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2283 #endif
2284
2285         /* drop all data frame if we are not associated */
2286         if (ieee80211_is_data(fc) &&
2287             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2288             (!iwl3945_is_associated(priv) ||
2289              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
2290                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2291                 goto drop_unlock;
2292         }
2293
2294         spin_unlock_irqrestore(&priv->lock, flags);
2295
2296         hdr_len = ieee80211_hdrlen(fc);
2297
2298         /* Find (or create) index into station table for destination station */
2299         sta_id = iwl3945_get_sta_id(priv, hdr);
2300         if (sta_id == IWL_INVALID_STATION) {
2301                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
2302                                hdr->addr1);
2303                 goto drop;
2304         }
2305
2306         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2307
2308         if (ieee80211_is_data_qos(fc)) {
2309                 qc = ieee80211_get_qos_ctl(hdr);
2310                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
2311                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
2312                                 IEEE80211_SCTL_SEQ;
2313                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2314                         (hdr->seq_ctrl &
2315                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2316                 seq_number += 0x10;
2317         }
2318
2319         /* Descriptor for chosen Tx queue */
2320         txq = &priv->txq39[txq_id];
2321         q = &txq->q;
2322
2323         spin_lock_irqsave(&priv->lock, flags);
2324
2325         /* Set up first empty TFD within this queue's circular TFD buffer */
2326         tfd = &txq->bd[q->write_ptr];
2327         memset(tfd, 0, sizeof(*tfd));
2328         control_flags = (u32 *) tfd;
2329         idx = get_cmd_index(q, q->write_ptr, 0);
2330
2331         /* Set up driver data for this TFD */
2332         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2333         txq->txb[q->write_ptr].skb[0] = skb;
2334
2335         /* Init first empty entry in queue's array of Tx/cmd buffers */
2336         out_cmd = &txq->cmd[idx];
2337         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2338         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2339
2340         /*
2341          * Set up the Tx-command (not MAC!) header.
2342          * Store the chosen Tx queue and TFD index within the sequence field;
2343          * after Tx, uCode's Tx response will return this value so driver can
2344          * locate the frame within the tx queue and do post-tx processing.
2345          */
2346         out_cmd->hdr.cmd = REPLY_TX;
2347         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2348                                 INDEX_TO_SEQ(q->write_ptr)));
2349
2350         /* Copy MAC header from skb into command buffer */
2351         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2352
2353         /*
2354          * Use the first empty entry in this queue's command buffer array
2355          * to contain the Tx command and MAC header concatenated together
2356          * (payload data will be in another buffer).
2357          * Size of this varies, due to varying MAC header length.
2358          * If end is not dword aligned, we'll have 2 extra bytes at the end
2359          * of the MAC header (device reads on dword boundaries).
2360          * We'll tell device about this padding later.
2361          */
2362         len = sizeof(struct iwl3945_tx_cmd) +
2363                         sizeof(struct iwl_cmd_header) + hdr_len;
2364
2365         len_org = len;
2366         len = (len + 3) & ~3;
2367
2368         if (len_org != len)
2369                 len_org = 1;
2370         else
2371                 len_org = 0;
2372
2373         /* Physical address of this Tx command's header (not MAC header!),
2374          * within command buffer array. */
2375         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2376                      offsetof(struct iwl_cmd, hdr);
2377
2378         /* Add buffer containing Tx command and MAC(!) header to TFD's
2379          * first entry */
2380         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2381
2382         if (info->control.hw_key)
2383                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2384
2385         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2386          * if any (802.11 null frames have no payload). */
2387         len = skb->len - hdr_len;
2388         if (len) {
2389                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2390                                            len, PCI_DMA_TODEVICE);
2391                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2392         }
2393
2394         if (!len)
2395                 /* If there is no payload, then we use only one Tx buffer */
2396                 *control_flags = TFD_CTL_COUNT_SET(1);
2397         else
2398                 /* Else use 2 buffers.
2399                  * Tell 3945 about any padding after MAC header */
2400                 *control_flags = TFD_CTL_COUNT_SET(2) |
2401                         TFD_CTL_PAD_SET(U32_PAD(len));
2402
2403         /* Total # bytes to be transmitted */
2404         len = (u16)skb->len;
2405         out_cmd->cmd.tx.len = cpu_to_le16(len);
2406
2407         /* TODO need this for burst mode later on */
2408         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
2409
2410         /* set is_hcca to 0; it probably will never be implemented */
2411         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2412
2413         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2414         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2415
2416         if (!ieee80211_has_morefrags(hdr->frame_control)) {
2417                 txq->need_update = 1;
2418                 if (qc)
2419                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
2420         } else {
2421                 wait_write_ptr = 1;
2422                 txq->need_update = 0;
2423         }
2424
2425         iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
2426                            sizeof(out_cmd->cmd.tx));
2427
2428         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2429                            ieee80211_hdrlen(fc));
2430
2431         /* Tell device the write index *just past* this latest filled TFD */
2432         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2433         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2434         spin_unlock_irqrestore(&priv->lock, flags);
2435
2436         if (rc)
2437                 return rc;
2438
2439         if ((iwl_queue_space(q) < q->high_mark)
2440             && priv->mac80211_registered) {
2441                 if (wait_write_ptr) {
2442                         spin_lock_irqsave(&priv->lock, flags);
2443                         txq->need_update = 1;
2444                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2445                         spin_unlock_irqrestore(&priv->lock, flags);
2446                 }
2447
2448                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2449         }
2450
2451         return 0;
2452
2453 drop_unlock:
2454         spin_unlock_irqrestore(&priv->lock, flags);
2455 drop:
2456         return -1;
2457 }
2458
2459 static void iwl3945_set_rate(struct iwl_priv *priv)
2460 {
2461         const struct ieee80211_supported_band *sband = NULL;
2462         struct ieee80211_rate *rate;
2463         int i;
2464
2465         sband = iwl3945_get_band(priv, priv->band);
2466         if (!sband) {
2467                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
2468                 return;
2469         }
2470
2471         priv->active_rate = 0;
2472         priv->active_rate_basic = 0;
2473
2474         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2475                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2476
2477         for (i = 0; i < sband->n_bitrates; i++) {
2478                 rate = &sband->bitrates[i];
2479                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2480                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2481                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2482                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2483                         priv->active_rate |= (1 << rate->hw_value);
2484                 }
2485         }
2486
2487         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2488                        priv->active_rate, priv->active_rate_basic);
2489
2490         /*
2491          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2492          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2493          * OFDM
2494          */
2495         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2496                 priv->staging39_rxon.cck_basic_rates =
2497                     ((priv->active_rate_basic &
2498                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2499         else
2500                 priv->staging39_rxon.cck_basic_rates =
2501                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2502
2503         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2504                 priv->staging39_rxon.ofdm_basic_rates =
2505                     ((priv->active_rate_basic &
2506                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2507                       IWL_FIRST_OFDM_RATE) & 0xFF;
2508         else
2509                 priv->staging39_rxon.ofdm_basic_rates =
2510                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2511 }
2512
2513 static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2514 {
2515         unsigned long flags;
2516
2517         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2518                 return;
2519
2520         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2521                           disable_radio ? "OFF" : "ON");
2522
2523         if (disable_radio) {
2524                 iwl3945_scan_cancel(priv);
2525                 /* FIXME: This is a workaround for AP */
2526                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2527                         spin_lock_irqsave(&priv->lock, flags);
2528                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2529                                     CSR_UCODE_SW_BIT_RFKILL);
2530                         spin_unlock_irqrestore(&priv->lock, flags);
2531                         iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2532                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2533                 }
2534                 return;
2535         }
2536
2537         spin_lock_irqsave(&priv->lock, flags);
2538         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2539
2540         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2541         spin_unlock_irqrestore(&priv->lock, flags);
2542
2543         /* wake up ucode */
2544         msleep(10);
2545
2546         spin_lock_irqsave(&priv->lock, flags);
2547         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2548         if (!iwl_grab_nic_access(priv))
2549                 iwl_release_nic_access(priv);
2550         spin_unlock_irqrestore(&priv->lock, flags);
2551
2552         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2553                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2554                                   "disabled by HW switch\n");
2555                 return;
2556         }
2557
2558         if (priv->is_open)
2559                 queue_work(priv->workqueue, &priv->restart);
2560         return;
2561 }
2562
2563 void iwl3945_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2564                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2565 {
2566         u16 fc =
2567             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2568
2569         if (priv->active39_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2570                 return;
2571
2572         if (!(fc & IEEE80211_FCTL_PROTECTED))
2573                 return;
2574
2575         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2576         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2577         case RX_RES_STATUS_SEC_TYPE_TKIP:
2578                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2579                     RX_RES_STATUS_BAD_ICV_MIC)
2580                         stats->flag |= RX_FLAG_MMIC_ERROR;
2581         case RX_RES_STATUS_SEC_TYPE_WEP:
2582         case RX_RES_STATUS_SEC_TYPE_CCMP:
2583                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2584                     RX_RES_STATUS_DECRYPT_OK) {
2585                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2586                         stats->flag |= RX_FLAG_DECRYPTED;
2587                 }
2588                 break;
2589
2590         default:
2591                 break;
2592         }
2593 }
2594
2595 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2596
2597 #include "iwl-spectrum.h"
2598
2599 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2600 #define BEACON_TIME_MASK_HIGH   0xFF000000
2601 #define TIME_UNIT               1024
2602
2603 /*
2604  * extended beacon time format
2605  * time in usec will be changed into a 32-bit value in 8:24 format
2606  * the high 1 byte is the beacon counts
2607  * the lower 3 bytes is the time in usec within one beacon interval
2608  */
2609
2610 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2611 {
2612         u32 quot;
2613         u32 rem;
2614         u32 interval = beacon_interval * 1024;
2615
2616         if (!interval || !usec)
2617                 return 0;
2618
2619         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2620         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2621
2622         return (quot << 24) + rem;
2623 }
2624
2625 /* base is usually what we get from ucode with each received frame,
2626  * the same as HW timer counter counting down
2627  */
2628
2629 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2630 {
2631         u32 base_low = base & BEACON_TIME_MASK_LOW;
2632         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2633         u32 interval = beacon_interval * TIME_UNIT;
2634         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2635             (addon & BEACON_TIME_MASK_HIGH);
2636
2637         if (base_low > addon_low)
2638                 res += base_low - addon_low;
2639         else if (base_low < addon_low) {
2640                 res += interval + base_low - addon_low;
2641                 res += (1 << 24);
2642         } else
2643                 res += (1 << 24);
2644
2645         return cpu_to_le32(res);
2646 }
2647
2648 static int iwl3945_get_measurement(struct iwl_priv *priv,
2649                                struct ieee80211_measurement_params *params,
2650                                u8 type)
2651 {
2652         struct iwl_spectrum_cmd spectrum;
2653         struct iwl_rx_packet *res;
2654         struct iwl_host_cmd cmd = {
2655                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2656                 .data = (void *)&spectrum,
2657                 .meta.flags = CMD_WANT_SKB,
2658         };
2659         u32 add_time = le64_to_cpu(params->start_time);
2660         int rc;
2661         int spectrum_resp_status;
2662         int duration = le16_to_cpu(params->duration);
2663
2664         if (iwl3945_is_associated(priv))
2665                 add_time =
2666                     iwl3945_usecs_to_beacons(
2667                         le64_to_cpu(params->start_time) - priv->last_tsf,
2668                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2669
2670         memset(&spectrum, 0, sizeof(spectrum));
2671
2672         spectrum.channel_count = cpu_to_le16(1);
2673         spectrum.flags =
2674             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2675         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2676         cmd.len = sizeof(spectrum);
2677         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2678
2679         if (iwl3945_is_associated(priv))
2680                 spectrum.start_time =
2681                     iwl3945_add_beacon_time(priv->last_beacon_time,
2682                                 add_time,
2683                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2684         else
2685                 spectrum.start_time = 0;
2686
2687         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2688         spectrum.channels[0].channel = params->channel;
2689         spectrum.channels[0].type = type;
2690         if (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK)
2691                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2692                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2693
2694         rc = iwl3945_send_cmd_sync(priv, &cmd);
2695         if (rc)
2696                 return rc;
2697
2698         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2699         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2700                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
2701                 rc = -EIO;
2702         }
2703
2704         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2705         switch (spectrum_resp_status) {
2706         case 0:         /* Command will be handled */
2707                 if (res->u.spectrum.id != 0xff) {
2708                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2709                                                 res->u.spectrum.id);
2710                         priv->measurement_status &= ~MEASUREMENT_READY;
2711                 }
2712                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2713                 rc = 0;
2714                 break;
2715
2716         case 1:         /* Command will not be handled */
2717                 rc = -EAGAIN;
2718                 break;
2719         }
2720
2721         dev_kfree_skb_any(cmd.meta.u.skb);
2722
2723         return rc;
2724 }
2725 #endif
2726
2727 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
2728                                struct iwl_rx_mem_buffer *rxb)
2729 {
2730         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2731         struct iwl_alive_resp *palive;
2732         struct delayed_work *pwork;
2733
2734         palive = &pkt->u.alive_frame;
2735
2736         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2737                        "0x%01X 0x%01X\n",
2738                        palive->is_valid, palive->ver_type,
2739                        palive->ver_subtype);
2740
2741         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2742                 IWL_DEBUG_INFO("Initialization Alive received.\n");
2743                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
2744                        sizeof(struct iwl_alive_resp));
2745                 pwork = &priv->init_alive_start;
2746         } else {
2747                 IWL_DEBUG_INFO("Runtime Alive received.\n");
2748                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2749                        sizeof(struct iwl_alive_resp));
2750                 pwork = &priv->alive_start;
2751                 iwl3945_disable_events(priv);
2752         }
2753
2754         /* We delay the ALIVE response by 5ms to
2755          * give the HW RF Kill time to activate... */
2756         if (palive->is_valid == UCODE_VALID_OK)
2757                 queue_delayed_work(priv->workqueue, pwork,
2758                                    msecs_to_jiffies(5));
2759         else
2760                 IWL_WARN(priv, "uCode did not respond OK.\n");
2761 }
2762
2763 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
2764                                  struct iwl_rx_mem_buffer *rxb)
2765 {
2766         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2767
2768         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2769         return;
2770 }
2771
2772 static void iwl3945_rx_reply_error(struct iwl_priv *priv,
2773                                struct iwl_rx_mem_buffer *rxb)
2774 {
2775         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2776
2777         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2778                 "seq 0x%04X ser 0x%08X\n",
2779                 le32_to_cpu(pkt->u.err_resp.error_type),
2780                 get_cmd_string(pkt->u.err_resp.cmd_id),
2781                 pkt->u.err_resp.cmd_id,
2782                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2783                 le32_to_cpu(pkt->u.err_resp.error_info));
2784 }
2785
2786 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2787
2788 static void iwl3945_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2789 {
2790         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2791         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active39_rxon;
2792         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
2793         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2794                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2795         rxon->channel = csa->channel;
2796         priv->staging39_rxon.channel = csa->channel;
2797 }
2798
2799 static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
2800                                           struct iwl_rx_mem_buffer *rxb)
2801 {
2802 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2803         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2804         struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
2805
2806         if (!report->state) {
2807                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2808                           "Spectrum Measure Notification: Start\n");
2809                 return;
2810         }
2811
2812         memcpy(&priv->measure_report, report, sizeof(*report));
2813         priv->measurement_status |= MEASUREMENT_READY;
2814 #endif
2815 }
2816
2817 static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
2818                                   struct iwl_rx_mem_buffer *rxb)
2819 {
2820 #ifdef CONFIG_IWL3945_DEBUG
2821         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2822         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2823         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2824                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2825 #endif
2826 }
2827
2828 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2829                                              struct iwl_rx_mem_buffer *rxb)
2830 {
2831         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2832         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2833                         "notification for %s:\n",
2834                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2835         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
2836                            le32_to_cpu(pkt->len));
2837 }
2838
2839 static void iwl3945_bg_beacon_update(struct work_struct *work)
2840 {
2841         struct iwl_priv *priv =
2842                 container_of(work, struct iwl_priv, beacon_update);
2843         struct sk_buff *beacon;
2844
2845         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2846         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2847
2848         if (!beacon) {
2849                 IWL_ERR(priv, "update beacon failed\n");
2850                 return;
2851         }
2852
2853         mutex_lock(&priv->mutex);
2854         /* new beacon skb is allocated every time; dispose previous.*/
2855         if (priv->ibss_beacon)
2856                 dev_kfree_skb(priv->ibss_beacon);
2857
2858         priv->ibss_beacon = beacon;
2859         mutex_unlock(&priv->mutex);
2860
2861         iwl3945_send_beacon_cmd(priv);
2862 }
2863
2864 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
2865                                 struct iwl_rx_mem_buffer *rxb)
2866 {
2867 #ifdef CONFIG_IWL3945_DEBUG
2868         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2869         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
2870         u8 rate = beacon->beacon_notify_hdr.rate;
2871
2872         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2873                 "tsf %d %d rate %d\n",
2874                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2875                 beacon->beacon_notify_hdr.failure_frame,
2876                 le32_to_cpu(beacon->ibss_mgr_status),
2877                 le32_to_cpu(beacon->high_tsf),
2878                 le32_to_cpu(beacon->low_tsf), rate);
2879 #endif
2880
2881         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2882             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2883                 queue_work(priv->workqueue, &priv->beacon_update);
2884 }
2885
2886 /* Service response to REPLY_SCAN_CMD (0x80) */
2887 static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
2888                               struct iwl_rx_mem_buffer *rxb)
2889 {
2890 #ifdef CONFIG_IWL3945_DEBUG
2891         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2892         struct iwl_scanreq_notification *notif =
2893             (struct iwl_scanreq_notification *)pkt->u.raw;
2894
2895         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2896 #endif
2897 }
2898
2899 /* Service SCAN_START_NOTIFICATION (0x82) */
2900 static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
2901                                     struct iwl_rx_mem_buffer *rxb)
2902 {
2903         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2904         struct iwl_scanstart_notification *notif =
2905             (struct iwl_scanstart_notification *)pkt->u.raw;
2906         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2907         IWL_DEBUG_SCAN("Scan start: "
2908                        "%d [802.11%s] "
2909                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2910                        notif->channel,
2911                        notif->band ? "bg" : "a",
2912                        notif->tsf_high,
2913                        notif->tsf_low, notif->status, notif->beacon_timer);
2914 }
2915
2916 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2917 static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
2918                                       struct iwl_rx_mem_buffer *rxb)
2919 {
2920         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2921         struct iwl_scanresults_notification *notif =
2922             (struct iwl_scanresults_notification *)pkt->u.raw;
2923
2924         IWL_DEBUG_SCAN("Scan ch.res: "
2925                        "%d [802.11%s] "
2926                        "(TSF: 0x%08X:%08X) - %d "
2927                        "elapsed=%lu usec (%dms since last)\n",
2928                        notif->channel,
2929                        notif->band ? "bg" : "a",
2930                        le32_to_cpu(notif->tsf_high),
2931                        le32_to_cpu(notif->tsf_low),
2932                        le32_to_cpu(notif->statistics[0]),
2933                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2934                        jiffies_to_msecs(elapsed_jiffies
2935                                         (priv->last_scan_jiffies, jiffies)));
2936
2937         priv->last_scan_jiffies = jiffies;
2938         priv->next_scan_jiffies = 0;
2939 }
2940
2941 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2942 static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
2943                                        struct iwl_rx_mem_buffer *rxb)
2944 {
2945         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2946         struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2947
2948         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2949                        scan_notif->scanned_channels,
2950                        scan_notif->tsf_low,
2951                        scan_notif->tsf_high, scan_notif->status);
2952
2953         /* The HW is no longer scanning */
2954         clear_bit(STATUS_SCAN_HW, &priv->status);
2955
2956         /* The scan completion notification came in, so kill that timer... */
2957         cancel_delayed_work(&priv->scan_check);
2958
2959         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2960                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
2961                                                         "2.4" : "5.2",
2962                        jiffies_to_msecs(elapsed_jiffies
2963                                         (priv->scan_pass_start, jiffies)));
2964
2965         /* Remove this scanned band from the list of pending
2966          * bands to scan, band G precedes A in order of scanning
2967          * as seen in iwl3945_bg_request_scan */
2968         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
2969                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
2970         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
2971                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
2972
2973         /* If a request to abort was given, or the scan did not succeed
2974          * then we reset the scan state machine and terminate,
2975          * re-queuing another scan if one has been requested */
2976         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2977                 IWL_DEBUG_INFO("Aborted scan completed.\n");
2978                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2979         } else {
2980                 /* If there are more bands on this scan pass reschedule */
2981                 if (priv->scan_bands > 0)
2982                         goto reschedule;
2983         }
2984
2985         priv->last_scan_jiffies = jiffies;
2986         priv->next_scan_jiffies = 0;
2987         IWL_DEBUG_INFO("Setting scan to off\n");
2988
2989         clear_bit(STATUS_SCANNING, &priv->status);
2990
2991         IWL_DEBUG_INFO("Scan took %dms\n",
2992                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2993
2994         queue_work(priv->workqueue, &priv->scan_completed);
2995
2996         return;
2997
2998 reschedule:
2999         priv->scan_pass_start = jiffies;
3000         queue_work(priv->workqueue, &priv->request_scan);
3001 }
3002
3003 /* Handle notification from uCode that card's power state is changing
3004  * due to software, hardware, or critical temperature RFKILL */
3005 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
3006                                     struct iwl_rx_mem_buffer *rxb)
3007 {
3008         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3009         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3010         unsigned long status = priv->status;
3011
3012         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3013                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3014                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3015
3016         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3017                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3018
3019         if (flags & HW_CARD_DISABLED)
3020                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3021         else
3022                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3023
3024
3025         if (flags & SW_CARD_DISABLED)
3026                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3027         else
3028                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3029
3030         iwl3945_scan_cancel(priv);
3031
3032         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3033              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3034             (test_bit(STATUS_RF_KILL_SW, &status) !=
3035              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3036                 queue_work(priv->workqueue, &priv->rf_kill);
3037         else
3038                 wake_up_interruptible(&priv->wait_command_queue);
3039 }
3040
3041 /**
3042  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3043  *
3044  * Setup the RX handlers for each of the reply types sent from the uCode
3045  * to the host.
3046  *
3047  * This function chains into the hardware specific files for them to setup
3048  * any hardware specific handlers as well.
3049  */
3050 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
3051 {
3052         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3053         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3054         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3055         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3056         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3057             iwl3945_rx_spectrum_measure_notif;
3058         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3059         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3060             iwl3945_rx_pm_debug_statistics_notif;
3061         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3062
3063         /*
3064          * The same handler is used for both the REPLY to a discrete
3065          * statistics request from the host as well as for the periodic
3066          * statistics notifications (after received beacons) from the uCode.
3067          */
3068         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3069         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3070
3071         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3072         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3073         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3074             iwl3945_rx_scan_results_notif;
3075         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3076             iwl3945_rx_scan_complete_notif;
3077         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3078
3079         /* Set up hardware specific Rx handlers */
3080         iwl3945_hw_rx_handler_setup(priv);
3081 }
3082
3083 /**
3084  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3085  * When FW advances 'R' index, all entries between old and new 'R' index
3086  * need to be reclaimed.
3087  */
3088 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
3089                                       int txq_id, int index)
3090 {
3091         struct iwl3945_tx_queue *txq = &priv->txq39[txq_id];
3092         struct iwl_queue *q = &txq->q;
3093         int nfreed = 0;
3094
3095         if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3096                 IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
3097                           "is out of range [0-%d] %d %d.\n", txq_id,
3098                           index, q->n_bd, q->write_ptr, q->read_ptr);
3099                 return;
3100         }
3101
3102         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3103                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3104                 if (nfreed > 1) {
3105                         IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
3106                                         q->write_ptr, q->read_ptr);
3107                         queue_work(priv->workqueue, &priv->restart);
3108                         break;
3109                 }
3110                 nfreed++;
3111         }
3112 }
3113
3114
3115 /**
3116  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3117  * @rxb: Rx buffer to reclaim
3118  *
3119  * If an Rx buffer has an async callback associated with it the callback
3120  * will be executed.  The attached skb (if present) will only be freed
3121  * if the callback returns 1
3122  */
3123 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
3124                                 struct iwl_rx_mem_buffer *rxb)
3125 {
3126         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3127         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3128         int txq_id = SEQ_TO_QUEUE(sequence);
3129         int index = SEQ_TO_INDEX(sequence);
3130         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
3131         int cmd_index;
3132         struct iwl_cmd *cmd;
3133
3134         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3135
3136         cmd_index = get_cmd_index(&priv->txq39[IWL_CMD_QUEUE_NUM].q, index, huge);
3137         cmd = &priv->txq39[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3138
3139         /* Input error checking is done when commands are added to queue. */
3140         if (cmd->meta.flags & CMD_WANT_SKB) {
3141                 cmd->meta.source->u.skb = rxb->skb;
3142                 rxb->skb = NULL;
3143         } else if (cmd->meta.u.callback &&
3144                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3145                 rxb->skb = NULL;
3146
3147         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
3148
3149         if (!(cmd->meta.flags & CMD_ASYNC)) {
3150                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3151                 wake_up_interruptible(&priv->wait_command_queue);
3152         }
3153 }
3154
3155 /************************** RX-FUNCTIONS ****************************/
3156 /*
3157  * Rx theory of operation
3158  *
3159  * The host allocates 32 DMA target addresses and passes the host address
3160  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3161  * 0 to 31
3162  *
3163  * Rx Queue Indexes
3164  * The host/firmware share two index registers for managing the Rx buffers.
3165  *
3166  * The READ index maps to the first position that the firmware may be writing
3167  * to -- the driver can read up to (but not including) this position and get
3168  * good data.
3169  * The READ index is managed by the firmware once the card is enabled.
3170  *
3171  * The WRITE index maps to the last position the driver has read from -- the
3172  * position preceding WRITE is the last slot the firmware can place a packet.
3173  *
3174  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3175  * WRITE = READ.
3176  *
3177  * During initialization, the host sets up the READ queue position to the first
3178  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3179  *
3180  * When the firmware places a packet in a buffer, it will advance the READ index
3181  * and fire the RX interrupt.  The driver can then query the READ index and
3182  * process as many packets as possible, moving the WRITE index forward as it
3183  * resets the Rx queue buffers with new memory.
3184  *
3185  * The management in the driver is as follows:
3186  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3187  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3188  *   to replenish the iwl->rxq->rx_free.
3189  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3190  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3191  *   'processed' and 'read' driver indexes as well)
3192  * + A received packet is processed and handed to the kernel network stack,
3193  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3194  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3195  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3196  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3197  *   were enough free buffers and RX_STALLED is set it is cleared.
3198  *
3199  *
3200  * Driver sequence:
3201  *
3202  * iwl3945_rx_queue_alloc()   Allocates rx_free
3203  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3204  *                            iwl3945_rx_queue_restock
3205  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3206  *                            queue, updates firmware pointers, and updates
3207  *                            the WRITE index.  If insufficient rx_free buffers
3208  *                            are available, schedules iwl3945_rx_replenish
3209  *
3210  * -- enable interrupts --
3211  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
3212  *                            READ INDEX, detaching the SKB from the pool.
3213  *                            Moves the packet buffer from queue to rx_used.
3214  *                            Calls iwl3945_rx_queue_restock to refill any empty
3215  *                            slots.
3216  * ...
3217  *
3218  */
3219
3220 /**
3221  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3222  */
3223 static int iwl3945_rx_queue_space(const struct iwl_rx_queue *q)
3224 {
3225         int s = q->read - q->write;
3226         if (s <= 0)
3227                 s += RX_QUEUE_SIZE;
3228         /* keep some buffer to not confuse full and empty queue */
3229         s -= 2;
3230         if (s < 0)
3231                 s = 0;
3232         return s;
3233 }
3234
3235 /**
3236  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3237  */
3238 int iwl3945_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
3239 {
3240         u32 reg = 0;
3241         int rc = 0;
3242         unsigned long flags;
3243
3244         spin_lock_irqsave(&q->lock, flags);
3245
3246         if (q->need_update == 0)
3247                 goto exit_unlock;
3248
3249         /* If power-saving is in use, make sure device is awake */
3250         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3251                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3252
3253                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3254                         iwl_set_bit(priv, CSR_GP_CNTRL,
3255                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3256                         goto exit_unlock;
3257                 }
3258
3259                 rc = iwl_grab_nic_access(priv);
3260                 if (rc)
3261                         goto exit_unlock;
3262
3263                 /* Device expects a multiple of 8 */
3264                 iwl_write_direct32(priv, FH39_RSCSR_CHNL0_WPTR,
3265                                      q->write & ~0x7);
3266                 iwl_release_nic_access(priv);
3267
3268         /* Else device is assumed to be awake */
3269         } else
3270                 /* Device expects a multiple of 8 */
3271                 iwl_write32(priv, FH39_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3272
3273
3274         q->need_update = 0;
3275
3276  exit_unlock:
3277         spin_unlock_irqrestore(&q->lock, flags);
3278         return rc;
3279 }
3280
3281 /**
3282  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3283  */
3284 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
3285                                           dma_addr_t dma_addr)
3286 {
3287         return cpu_to_le32((u32)dma_addr);
3288 }
3289
3290 /**
3291  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3292  *
3293  * If there are slots in the RX queue that need to be restocked,
3294  * and we have free pre-allocated buffers, fill the ranks as much
3295  * as we can, pulling from rx_free.
3296  *
3297  * This moves the 'write' index forward to catch up with 'processed', and
3298  * also updates the memory address in the firmware to reference the new
3299  * target buffer.
3300  */
3301 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
3302 {
3303         struct iwl_rx_queue *rxq = &priv->rxq;
3304         struct list_head *element;
3305         struct iwl_rx_mem_buffer *rxb;
3306         unsigned long flags;
3307         int write, rc;
3308
3309         spin_lock_irqsave(&rxq->lock, flags);
3310         write = rxq->write & ~0x7;
3311         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3312                 /* Get next free Rx buffer, remove from free list */
3313                 element = rxq->rx_free.next;
3314                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
3315                 list_del(element);
3316
3317                 /* Point to Rx buffer via next RBD in circular buffer */
3318                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
3319                 rxq->queue[rxq->write] = rxb;
3320                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3321                 rxq->free_count--;
3322         }
3323         spin_unlock_irqrestore(&rxq->lock, flags);
3324         /* If the pre-allocated buffer pool is dropping low, schedule to
3325          * refill it */
3326         if (rxq->free_count <= RX_LOW_WATERMARK)
3327                 queue_work(priv->workqueue, &priv->rx_replenish);
3328
3329
3330         /* If we've added more space for the firmware to place data, tell it.
3331          * Increment device's write pointer in multiples of 8. */
3332         if ((write != (rxq->write & ~0x7))
3333             || (abs(rxq->write - rxq->read) > 7)) {
3334                 spin_lock_irqsave(&rxq->lock, flags);
3335                 rxq->need_update = 1;
3336                 spin_unlock_irqrestore(&rxq->lock, flags);
3337                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3338                 if (rc)
3339                         return rc;
3340         }
3341
3342         return 0;
3343 }
3344
3345 /**
3346  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3347  *
3348  * When moving to rx_free an SKB is allocated for the slot.
3349  *
3350  * Also restock the Rx queue via iwl3945_rx_queue_restock.
3351  * This is called as a scheduled work item (except for during initialization)
3352  */
3353 static void iwl3945_rx_allocate(struct iwl_priv *priv)
3354 {
3355         struct iwl_rx_queue *rxq = &priv->rxq;
3356         struct list_head *element;
3357         struct iwl_rx_mem_buffer *rxb;
3358         unsigned long flags;
3359         spin_lock_irqsave(&rxq->lock, flags);
3360         while (!list_empty(&rxq->rx_used)) {
3361                 element = rxq->rx_used.next;
3362                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
3363
3364                 /* Alloc a new receive buffer */
3365                 rxb->skb =
3366                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3367                 if (!rxb->skb) {
3368                         if (net_ratelimit())
3369                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
3370                         /* We don't reschedule replenish work here -- we will
3371                          * call the restock method and if it still needs
3372                          * more buffers it will schedule replenish */
3373                         break;
3374                 }
3375
3376                 /* If radiotap head is required, reserve some headroom here.
3377                  * The physical head count is a variable rx_stats->phy_count.
3378                  * We reserve 4 bytes here. Plus these extra bytes, the
3379                  * headroom of the physical head should be enough for the
3380                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3381                  */
3382                 skb_reserve(rxb->skb, 4);
3383
3384                 priv->alloc_rxb_skb++;
3385                 list_del(element);
3386
3387                 /* Get physical address of RB/SKB */
3388                 rxb->real_dma_addr =
3389                     pci_map_single(priv->pci_dev, rxb->skb->data,
3390                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3391                 list_add_tail(&rxb->list, &rxq->rx_free);
3392                 rxq->free_count++;
3393         }
3394         spin_unlock_irqrestore(&rxq->lock, flags);
3395 }
3396
3397 /*
3398  * this should be called while priv->lock is locked
3399  */
3400 static void __iwl3945_rx_replenish(void *data)
3401 {
3402         struct iwl_priv *priv = data;
3403
3404         iwl3945_rx_allocate(priv);
3405         iwl3945_rx_queue_restock(priv);
3406 }
3407
3408
3409 void iwl3945_rx_replenish(void *data)
3410 {
3411         struct iwl_priv *priv = data;
3412         unsigned long flags;
3413
3414         iwl3945_rx_allocate(priv);
3415
3416         spin_lock_irqsave(&priv->lock, flags);
3417         iwl3945_rx_queue_restock(priv);
3418         spin_unlock_irqrestore(&priv->lock, flags);
3419 }
3420
3421 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3422  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3423  * This free routine walks the list of POOL entries and if SKB is set to
3424  * non NULL it is unmapped and freed
3425  */
3426 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
3427 {
3428         int i;
3429         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3430                 if (rxq->pool[i].skb != NULL) {
3431                         pci_unmap_single(priv->pci_dev,
3432                                          rxq->pool[i].real_dma_addr,
3433                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3434                         dev_kfree_skb(rxq->pool[i].skb);
3435                 }
3436         }
3437
3438         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3439                             rxq->dma_addr);
3440         rxq->bd = NULL;
3441 }
3442
3443 int iwl3945_rx_queue_alloc(struct iwl_priv *priv)
3444 {
3445         struct iwl_rx_queue *rxq = &priv->rxq;
3446         struct pci_dev *dev = priv->pci_dev;
3447         int i;
3448
3449         spin_lock_init(&rxq->lock);
3450         INIT_LIST_HEAD(&rxq->rx_free);
3451         INIT_LIST_HEAD(&rxq->rx_used);
3452
3453         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3454         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3455         if (!rxq->bd)
3456                 return -ENOMEM;
3457
3458         /* Fill the rx_used queue with _all_ of the Rx buffers */
3459         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3460                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3461
3462         /* Set us so that we have processed and used all buffers, but have
3463          * not restocked the Rx queue with fresh buffers */
3464         rxq->read = rxq->write = 0;
3465         rxq->free_count = 0;
3466         rxq->need_update = 0;
3467         return 0;
3468 }
3469
3470 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
3471 {
3472         unsigned long flags;
3473         int i;
3474         spin_lock_irqsave(&rxq->lock, flags);
3475         INIT_LIST_HEAD(&rxq->rx_free);
3476         INIT_LIST_HEAD(&rxq->rx_used);
3477         /* Fill the rx_used queue with _all_ of the Rx buffers */
3478         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3479                 /* In the reset function, these buffers may have been allocated
3480                  * to an SKB, so we need to unmap and free potential storage */
3481                 if (rxq->pool[i].skb != NULL) {
3482                         pci_unmap_single(priv->pci_dev,
3483                                          rxq->pool[i].real_dma_addr,
3484                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3485                         priv->alloc_rxb_skb--;
3486                         dev_kfree_skb(rxq->pool[i].skb);
3487                         rxq->pool[i].skb = NULL;
3488                 }
3489                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3490         }
3491
3492         /* Set us so that we have processed and used all buffers, but have
3493          * not restocked the Rx queue with fresh buffers */
3494         rxq->read = rxq->write = 0;
3495         rxq->free_count = 0;
3496         spin_unlock_irqrestore(&rxq->lock, flags);
3497 }
3498
3499 /* Convert linear signal-to-noise ratio into dB */
3500 static u8 ratio2dB[100] = {
3501 /*       0   1   2   3   4   5   6   7   8   9 */
3502          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3503         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3504         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3505         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3506         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3507         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3508         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3509         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3510         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3511         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3512 };
3513
3514 /* Calculates a relative dB value from a ratio of linear
3515  *   (i.e. not dB) signal levels.
3516  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3517 int iwl3945_calc_db_from_ratio(int sig_ratio)
3518 {
3519         /* 1000:1 or higher just report as 60 dB */
3520         if (sig_ratio >= 1000)
3521                 return 60;
3522
3523         /* 100:1 or higher, divide by 10 and use table,
3524          *   add 20 dB to make up for divide by 10 */
3525         if (sig_ratio >= 100)
3526                 return 20 + (int)ratio2dB[sig_ratio/10];
3527
3528         /* We shouldn't see this */
3529         if (sig_ratio < 1)
3530                 return 0;
3531
3532         /* Use table for ratios 1:1 - 99:1 */
3533         return (int)ratio2dB[sig_ratio];
3534 }
3535
3536 #define PERFECT_RSSI (-20) /* dBm */
3537 #define WORST_RSSI (-95)   /* dBm */
3538 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3539
3540 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3541  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3542  *   about formulas used below. */
3543 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3544 {
3545         int sig_qual;
3546         int degradation = PERFECT_RSSI - rssi_dbm;
3547
3548         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3549          * as indicator; formula is (signal dbm - noise dbm).
3550          * SNR at or above 40 is a great signal (100%).
3551          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3552          * Weakest usable signal is usually 10 - 15 dB SNR. */
3553         if (noise_dbm) {
3554                 if (rssi_dbm - noise_dbm >= 40)
3555                         return 100;
3556                 else if (rssi_dbm < noise_dbm)
3557                         return 0;
3558                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3559
3560         /* Else use just the signal level.
3561          * This formula is a least squares fit of data points collected and
3562          *   compared with a reference system that had a percentage (%) display
3563          *   for signal quality. */
3564         } else
3565                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3566                             (15 * RSSI_RANGE + 62 * degradation)) /
3567                            (RSSI_RANGE * RSSI_RANGE);
3568
3569         if (sig_qual > 100)
3570                 sig_qual = 100;
3571         else if (sig_qual < 1)
3572                 sig_qual = 0;
3573
3574         return sig_qual;
3575 }
3576
3577 /**
3578  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3579  *
3580  * Uses the priv->rx_handlers callback function array to invoke
3581  * the appropriate handlers, including command responses,
3582  * frame-received notifications, and other notifications.
3583  */
3584 static void iwl3945_rx_handle(struct iwl_priv *priv)
3585 {
3586         struct iwl_rx_mem_buffer *rxb;
3587         struct iwl_rx_packet *pkt;
3588         struct iwl_rx_queue *rxq = &priv->rxq;
3589         u32 r, i;
3590         int reclaim;
3591         unsigned long flags;
3592         u8 fill_rx = 0;
3593         u32 count = 8;
3594
3595         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3596          * buffer that the driver may process (last buffer filled by ucode). */
3597         r = iwl3945_hw_get_rx_read(priv);
3598         i = rxq->read;
3599
3600         if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3601                 fill_rx = 1;
3602         /* Rx interrupt, but nothing sent from uCode */
3603         if (i == r)
3604                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3605
3606         while (i != r) {
3607                 rxb = rxq->queue[i];
3608
3609                 /* If an RXB doesn't have a Rx queue slot associated with it,
3610                  * then a bug has been introduced in the queue refilling
3611                  * routines -- catch it here */
3612                 BUG_ON(rxb == NULL);
3613
3614                 rxq->queue[i] = NULL;
3615
3616                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
3617                                             IWL_RX_BUF_SIZE,
3618                                             PCI_DMA_FROMDEVICE);
3619                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3620
3621                 /* Reclaim a command buffer only if this packet is a response
3622                  *   to a (driver-originated) command.
3623                  * If the packet (e.g. Rx frame) originated from uCode,
3624                  *   there is no command buffer to reclaim.
3625                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3626                  *   but apparently a few don't get set; catch them here. */
3627                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3628                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3629                         (pkt->hdr.cmd != REPLY_TX);
3630
3631                 /* Based on type of command response or notification,
3632                  *   handle those that need handling via function in
3633                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
3634                 if (priv->rx_handlers[pkt->hdr.cmd]) {
3635                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3636                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3637                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3638                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3639                 } else {
3640                         /* No handling needed */
3641                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3642                                 "r %d i %d No handler needed for %s, 0x%02x\n",
3643                                 r, i, get_cmd_string(pkt->hdr.cmd),
3644                                 pkt->hdr.cmd);
3645                 }
3646
3647                 if (reclaim) {
3648                         /* Invoke any callbacks, transfer the skb to caller, and
3649                          * fire off the (possibly) blocking iwl3945_send_cmd()
3650                          * as we reclaim the driver command queue */
3651                         if (rxb && rxb->skb)
3652                                 iwl3945_tx_cmd_complete(priv, rxb);
3653                         else
3654                                 IWL_WARN(priv, "Claim null rxb?\n");
3655                 }
3656
3657                 /* For now we just don't re-use anything.  We can tweak this
3658                  * later to try and re-use notification packets and SKBs that
3659                  * fail to Rx correctly */
3660                 if (rxb->skb != NULL) {
3661                         priv->alloc_rxb_skb--;
3662                         dev_kfree_skb_any(rxb->skb);
3663                         rxb->skb = NULL;
3664                 }
3665
3666                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
3667                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3668                 spin_lock_irqsave(&rxq->lock, flags);
3669                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3670                 spin_unlock_irqrestore(&rxq->lock, flags);
3671                 i = (i + 1) & RX_QUEUE_MASK;
3672                 /* If there are a lot of unused frames,
3673                  * restock the Rx queue so ucode won't assert. */
3674                 if (fill_rx) {
3675                         count++;
3676                         if (count >= 8) {
3677                                 priv->rxq.read = i;
3678                                 __iwl3945_rx_replenish(priv);
3679                                 count = 0;
3680                         }
3681                 }
3682         }
3683
3684         /* Backtrack one entry */
3685         priv->rxq.read = i;
3686         iwl3945_rx_queue_restock(priv);
3687 }
3688
3689 /**
3690  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
3691  */
3692 static int iwl3945_tx_queue_update_write_ptr(struct iwl_priv *priv,
3693                                   struct iwl3945_tx_queue *txq)
3694 {
3695         u32 reg = 0;
3696         int rc = 0;
3697         int txq_id = txq->q.id;
3698
3699         if (txq->need_update == 0)
3700                 return rc;
3701
3702         /* if we're trying to save power */
3703         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3704                 /* wake up nic if it's powered down ...
3705                  * uCode will wake up, and interrupt us again, so next
3706                  * time we'll skip this part. */
3707                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3708
3709                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3710                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3711                         iwl_set_bit(priv, CSR_GP_CNTRL,
3712                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3713                         return rc;
3714                 }
3715
3716                 /* restore this queue's parameters in nic hardware. */
3717                 rc = iwl_grab_nic_access(priv);
3718                 if (rc)
3719                         return rc;
3720                 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3721                                      txq->q.write_ptr | (txq_id << 8));
3722                 iwl_release_nic_access(priv);
3723
3724         /* else not in power-save mode, uCode will never sleep when we're
3725          * trying to tx (during RFKILL, we're not trying to tx). */
3726         } else
3727                 iwl_write32(priv, HBUS_TARG_WRPTR,
3728                             txq->q.write_ptr | (txq_id << 8));
3729
3730         txq->need_update = 0;
3731
3732         return rc;
3733 }
3734
3735 #ifdef CONFIG_IWL3945_DEBUG
3736 static void iwl3945_print_rx_config_cmd(struct iwl_priv *priv,
3737                                         struct iwl3945_rxon_cmd *rxon)
3738 {
3739         IWL_DEBUG_RADIO("RX CONFIG:\n");
3740         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3741         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3742         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3743         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3744                         le32_to_cpu(rxon->filter_flags));
3745         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3746         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3747                         rxon->ofdm_basic_rates);
3748         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3749         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3750         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
3751         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3752 }
3753 #endif
3754
3755 static void iwl3945_enable_interrupts(struct iwl_priv *priv)
3756 {
3757         IWL_DEBUG_ISR("Enabling interrupts\n");
3758         set_bit(STATUS_INT_ENABLED, &priv->status);
3759         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3760 }
3761
3762
3763 /* call this function to flush any scheduled tasklet */
3764 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3765 {
3766         /* wait to make sure we flush pending tasklet*/
3767         synchronize_irq(priv->pci_dev->irq);
3768         tasklet_kill(&priv->irq_tasklet);
3769 }
3770
3771
3772 static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
3773 {
3774         clear_bit(STATUS_INT_ENABLED, &priv->status);
3775
3776         /* disable interrupts from uCode/NIC to host */
3777         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3778
3779         /* acknowledge/clear/reset any interrupts still pending
3780          * from uCode or flow handler (Rx/Tx DMA) */
3781         iwl_write32(priv, CSR_INT, 0xffffffff);
3782         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3783         IWL_DEBUG_ISR("Disabled interrupts\n");
3784 }
3785
3786 static const char *desc_lookup(int i)
3787 {
3788         switch (i) {
3789         case 1:
3790                 return "FAIL";
3791         case 2:
3792                 return "BAD_PARAM";
3793         case 3:
3794                 return "BAD_CHECKSUM";
3795         case 4:
3796                 return "NMI_INTERRUPT";
3797         case 5:
3798                 return "SYSASSERT";
3799         case 6:
3800                 return "FATAL_ERROR";
3801         }
3802
3803         return "UNKNOWN";
3804 }
3805
3806 #define ERROR_START_OFFSET  (1 * sizeof(u32))
3807 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
3808
3809 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
3810 {
3811         u32 i;
3812         u32 desc, time, count, base, data1;
3813         u32 blink1, blink2, ilink1, ilink2;
3814         int rc;
3815
3816         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3817
3818         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3819                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
3820                 return;
3821         }
3822
3823         rc = iwl_grab_nic_access(priv);
3824         if (rc) {
3825                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
3826                 return;
3827         }
3828
3829         count = iwl_read_targ_mem(priv, base);
3830
3831         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3832                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
3833                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
3834                         priv->status, count);
3835         }
3836
3837         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
3838                   "ilink1  nmiPC   Line\n");
3839         for (i = ERROR_START_OFFSET;
3840              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
3841              i += ERROR_ELEM_SIZE) {
3842                 desc = iwl_read_targ_mem(priv, base + i);
3843                 time =
3844                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
3845                 blink1 =
3846                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
3847                 blink2 =
3848                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
3849                 ilink1 =
3850                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
3851                 ilink2 =
3852                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
3853                 data1 =
3854                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
3855
3856                 IWL_ERR(priv,
3857                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
3858                         desc_lookup(desc), desc, time, blink1, blink2,
3859                         ilink1, ilink2, data1);
3860         }
3861
3862         iwl_release_nic_access(priv);
3863
3864 }
3865
3866 #define EVENT_START_OFFSET  (6 * sizeof(u32))
3867
3868 /**
3869  * iwl3945_print_event_log - Dump error event log to syslog
3870  *
3871  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3872  */
3873 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
3874                                 u32 num_events, u32 mode)
3875 {
3876         u32 i;
3877         u32 base;       /* SRAM byte address of event log header */
3878         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3879         u32 ptr;        /* SRAM byte address of log data */
3880         u32 ev, time, data; /* event log data */
3881
3882         if (num_events == 0)
3883                 return;
3884
3885         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3886
3887         if (mode == 0)
3888                 event_size = 2 * sizeof(u32);
3889         else
3890                 event_size = 3 * sizeof(u32);
3891
3892         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3893
3894         /* "time" is actually "data" for mode 0 (no timestamp).
3895          * place event id # at far right for easier visual parsing. */
3896         for (i = 0; i < num_events; i++) {
3897                 ev = iwl_read_targ_mem(priv, ptr);
3898                 ptr += sizeof(u32);
3899                 time = iwl_read_targ_mem(priv, ptr);
3900                 ptr += sizeof(u32);
3901                 if (mode == 0) {
3902                         /* data, ev */
3903                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
3904                 } else {
3905                         data = iwl_read_targ_mem(priv, ptr);
3906                         ptr += sizeof(u32);
3907                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
3908                 }
3909         }
3910 }
3911
3912 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
3913 {
3914         int rc;
3915         u32 base;       /* SRAM byte address of event log header */
3916         u32 capacity;   /* event log capacity in # entries */
3917         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
3918         u32 num_wraps;  /* # times uCode wrapped to top of log */
3919         u32 next_entry; /* index of next entry to be written by uCode */
3920         u32 size;       /* # entries that we'll print */
3921
3922         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3923         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3924                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
3925                 return;
3926         }
3927
3928         rc = iwl_grab_nic_access(priv);
3929         if (rc) {
3930                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
3931                 return;
3932         }
3933
3934         /* event log header */
3935         capacity = iwl_read_targ_mem(priv, base);
3936         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3937         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3938         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
3939
3940         size = num_wraps ? capacity : next_entry;
3941
3942         /* bail out if nothing in log */
3943         if (size == 0) {
3944                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
3945                 iwl_release_nic_access(priv);
3946                 return;
3947         }
3948
3949         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
3950                   size, num_wraps);
3951
3952         /* if uCode has wrapped back to top of log, start at the oldest entry,
3953          * i.e the next one that uCode would fill. */
3954         if (num_wraps)
3955                 iwl3945_print_event_log(priv, next_entry,
3956                                     capacity - next_entry, mode);
3957
3958         /* (then/else) start at top of log */
3959         iwl3945_print_event_log(priv, 0, next_entry, mode);
3960
3961         iwl_release_nic_access(priv);
3962 }
3963
3964 /**
3965  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
3966  */
3967 static void iwl3945_irq_handle_error(struct iwl_priv *priv)
3968 {
3969         /* Set the FW error flag -- cleared on iwl3945_down */
3970         set_bit(STATUS_FW_ERROR, &priv->status);
3971
3972         /* Cancel currently queued command. */
3973         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3974
3975 #ifdef CONFIG_IWL3945_DEBUG
3976         if (priv->debug_level & IWL_DL_FW_ERRORS) {
3977                 iwl3945_dump_nic_error_log(priv);
3978                 iwl3945_dump_nic_event_log(priv);
3979                 iwl3945_print_rx_config_cmd(priv, &priv->staging39_rxon);
3980         }
3981 #endif
3982
3983         wake_up_interruptible(&priv->wait_command_queue);
3984
3985         /* Keep the restart process from trying to send host
3986          * commands by clearing the INIT status bit */
3987         clear_bit(STATUS_READY, &priv->status);
3988
3989         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3990                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
3991                           "Restarting adapter due to uCode error.\n");
3992
3993                 if (iwl3945_is_associated(priv)) {
3994                         memcpy(&priv->recovery39_rxon, &priv->active39_rxon,
3995                                sizeof(priv->recovery39_rxon));
3996                         priv->error_recovering = 1;
3997                 }
3998                 queue_work(priv->workqueue, &priv->restart);
3999         }
4000 }
4001
4002 static void iwl3945_error_recovery(struct iwl_priv *priv)
4003 {
4004         unsigned long flags;
4005
4006         memcpy(&priv->staging39_rxon, &priv->recovery39_rxon,
4007                sizeof(priv->staging39_rxon));
4008         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4009         iwl3945_commit_rxon(priv);
4010
4011         iwl3945_add_station(priv, priv->bssid, 1, 0);
4012
4013         spin_lock_irqsave(&priv->lock, flags);
4014         priv->assoc_id = le16_to_cpu(priv->staging39_rxon.assoc_id);
4015         priv->error_recovering = 0;
4016         spin_unlock_irqrestore(&priv->lock, flags);
4017 }
4018
4019 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
4020 {
4021         u32 inta, handled = 0;
4022         u32 inta_fh;
4023         unsigned long flags;
4024 #ifdef CONFIG_IWL3945_DEBUG
4025         u32 inta_mask;
4026 #endif
4027
4028         spin_lock_irqsave(&priv->lock, flags);
4029
4030         /* Ack/clear/reset pending uCode interrupts.
4031          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4032          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4033         inta = iwl_read32(priv, CSR_INT);
4034         iwl_write32(priv, CSR_INT, inta);
4035
4036         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4037          * Any new interrupts that happen after this, either while we're
4038          * in this tasklet, or later, will show up in next ISR/tasklet. */
4039         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4040         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4041
4042 #ifdef CONFIG_IWL3945_DEBUG
4043         if (priv->debug_level & IWL_DL_ISR) {
4044                 /* just for debug */
4045                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4046                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4047                               inta, inta_mask, inta_fh);
4048         }
4049 #endif
4050
4051         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4052          * atomic, make sure that inta covers all the interrupts that
4053          * we've discovered, even if FH interrupt came in just after
4054          * reading CSR_INT. */
4055         if (inta_fh & CSR39_FH_INT_RX_MASK)
4056                 inta |= CSR_INT_BIT_FH_RX;
4057         if (inta_fh & CSR39_FH_INT_TX_MASK)
4058                 inta |= CSR_INT_BIT_FH_TX;
4059
4060         /* Now service all interrupt bits discovered above. */
4061         if (inta & CSR_INT_BIT_HW_ERR) {
4062                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
4063
4064                 /* Tell the device to stop sending interrupts */
4065                 iwl3945_disable_interrupts(priv);
4066
4067                 iwl3945_irq_handle_error(priv);
4068
4069                 handled |= CSR_INT_BIT_HW_ERR;
4070
4071                 spin_unlock_irqrestore(&priv->lock, flags);
4072
4073                 return;
4074         }
4075
4076 #ifdef CONFIG_IWL3945_DEBUG
4077         if (priv->debug_level & (IWL_DL_ISR)) {
4078                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4079                 if (inta & CSR_INT_BIT_SCD)
4080                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4081                                       "the frame/frames.\n");
4082
4083                 /* Alive notification via Rx interrupt will do the real work */
4084                 if (inta & CSR_INT_BIT_ALIVE)
4085                         IWL_DEBUG_ISR("Alive interrupt\n");
4086         }
4087 #endif
4088         /* Safely ignore these bits for debug checks below */
4089         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4090
4091         /* Error detected by uCode */
4092         if (inta & CSR_INT_BIT_SW_ERR) {
4093                 IWL_ERR(priv, "Microcode SW error detected. "
4094                         "Restarting 0x%X.\n", inta);
4095                 iwl3945_irq_handle_error(priv);
4096                 handled |= CSR_INT_BIT_SW_ERR;
4097         }
4098
4099         /* uCode wakes up after power-down sleep */
4100         if (inta & CSR_INT_BIT_WAKEUP) {
4101                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4102                 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4103                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[0]);
4104                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[1]);
4105                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[2]);
4106                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[3]);
4107                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[4]);
4108                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[5]);
4109
4110                 handled |= CSR_INT_BIT_WAKEUP;
4111         }
4112
4113         /* All uCode command responses, including Tx command responses,
4114          * Rx "responses" (frame-received notification), and other
4115          * notifications from uCode come through here*/
4116         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4117                 iwl3945_rx_handle(priv);
4118                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4119         }
4120
4121         if (inta & CSR_INT_BIT_FH_TX) {
4122                 IWL_DEBUG_ISR("Tx interrupt\n");
4123
4124                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4125                 if (!iwl_grab_nic_access(priv)) {
4126                         iwl_write_direct32(priv, FH39_TCSR_CREDIT
4127                                              (FH39_SRVC_CHNL), 0x0);
4128                         iwl_release_nic_access(priv);
4129                 }
4130                 handled |= CSR_INT_BIT_FH_TX;
4131         }
4132
4133         if (inta & ~handled)
4134                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
4135
4136         if (inta & ~CSR_INI_SET_MASK) {
4137                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
4138                          inta & ~CSR_INI_SET_MASK);
4139                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
4140         }
4141
4142         /* Re-enable all interrupts */
4143         /* only Re-enable if disabled by irq */
4144         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4145                 iwl3945_enable_interrupts(priv);
4146
4147 #ifdef CONFIG_IWL3945_DEBUG
4148         if (priv->debug_level & (IWL_DL_ISR)) {
4149                 inta = iwl_read32(priv, CSR_INT);
4150                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4151                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4152                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4153                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4154         }
4155 #endif
4156         spin_unlock_irqrestore(&priv->lock, flags);
4157 }
4158
4159 static irqreturn_t iwl3945_isr(int irq, void *data)
4160 {
4161         struct iwl_priv *priv = data;
4162         u32 inta, inta_mask;
4163         u32 inta_fh;
4164         if (!priv)
4165                 return IRQ_NONE;
4166
4167         spin_lock(&priv->lock);
4168
4169         /* Disable (but don't clear!) interrupts here to avoid
4170          *    back-to-back ISRs and sporadic interrupts from our NIC.
4171          * If we have something to service, the tasklet will re-enable ints.
4172          * If we *don't* have something, we'll re-enable before leaving here. */
4173         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
4174         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4175
4176         /* Discover which interrupts are active/pending */
4177         inta = iwl_read32(priv, CSR_INT);
4178         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4179
4180         /* Ignore interrupt if there's nothing in NIC to service.
4181          * This may be due to IRQ shared with another device,
4182          * or due to sporadic interrupts thrown from our NIC. */
4183         if (!inta && !inta_fh) {
4184                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4185                 goto none;
4186         }
4187
4188         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4189                 /* Hardware disappeared */
4190                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
4191                 goto unplugged;
4192         }
4193
4194         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4195                       inta, inta_mask, inta_fh);
4196
4197         inta &= ~CSR_INT_BIT_SCD;
4198
4199         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4200         if (likely(inta || inta_fh))
4201                 tasklet_schedule(&priv->irq_tasklet);
4202 unplugged:
4203         spin_unlock(&priv->lock);
4204
4205         return IRQ_HANDLED;
4206
4207  none:
4208         /* re-enable interrupts here since we don't have anything to service. */
4209         /* only Re-enable if disabled by irq */
4210         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4211                 iwl3945_enable_interrupts(priv);
4212         spin_unlock(&priv->lock);
4213         return IRQ_NONE;
4214 }
4215
4216 /************************** EEPROM BANDS ****************************
4217  *
4218  * The iwl3945_eeprom_band definitions below provide the mapping from the
4219  * EEPROM contents to the specific channel number supported for each
4220  * band.
4221  *
4222  * For example, iwl3945_priv->eeprom39.band_3_channels[4] from the band_3
4223  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4224  * The specific geography and calibration information for that channel
4225  * is contained in the eeprom map itself.
4226  *
4227  * During init, we copy the eeprom information and channel map
4228  * information into priv->channel_info_24/52 and priv->channel_map_24/52
4229  *
4230  * channel_map_24/52 provides the index in the channel_info array for a
4231  * given channel.  We have to have two separate maps as there is channel
4232  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4233  * band_2
4234  *
4235  * A value of 0xff stored in the channel_map indicates that the channel
4236  * is not supported by the hardware at all.
4237  *
4238  * A value of 0xfe in the channel_map indicates that the channel is not
4239  * valid for Tx with the current hardware.  This means that
4240  * while the system can tune and receive on a given channel, it may not
4241  * be able to associate or transmit any frames on that
4242  * channel.  There is no corresponding channel information for that
4243  * entry.
4244  *
4245  *********************************************************************/
4246
4247 /* 2.4 GHz */
4248 static const u8 iwl3945_eeprom_band_1[14] = {
4249         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4250 };
4251
4252 /* 5.2 GHz bands */
4253 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
4254         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4255 };
4256
4257 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
4258         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4259 };
4260
4261 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
4262         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4263 };
4264
4265 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
4266         145, 149, 153, 157, 161, 165
4267 };
4268
4269 static void iwl3945_init_band_reference(const struct iwl_priv *priv, int band,
4270                                     int *eeprom_ch_count,
4271                                     const struct iwl_eeprom_channel
4272                                     **eeprom_ch_info,
4273                                     const u8 **eeprom_ch_index)
4274 {
4275         switch (band) {
4276         case 1:         /* 2.4GHz band */
4277                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4278                 *eeprom_ch_info = priv->eeprom39.band_1_channels;
4279                 *eeprom_ch_index = iwl3945_eeprom_band_1;
4280                 break;
4281         case 2:         /* 4.9GHz band */
4282                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4283                 *eeprom_ch_info = priv->eeprom39.band_2_channels;
4284                 *eeprom_ch_index = iwl3945_eeprom_band_2;
4285                 break;
4286         case 3:         /* 5.2GHz band */
4287                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4288                 *eeprom_ch_info = priv->eeprom39.band_3_channels;
4289                 *eeprom_ch_index = iwl3945_eeprom_band_3;
4290                 break;
4291         case 4:         /* 5.5GHz band */
4292                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4293                 *eeprom_ch_info = priv->eeprom39.band_4_channels;
4294                 *eeprom_ch_index = iwl3945_eeprom_band_4;
4295                 break;
4296         case 5:         /* 5.7GHz band */
4297                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4298                 *eeprom_ch_info = priv->eeprom39.band_5_channels;
4299                 *eeprom_ch_index = iwl3945_eeprom_band_5;
4300                 break;
4301         default:
4302                 BUG();
4303                 return;
4304         }
4305 }
4306
4307 /**
4308  * iwl3945_get_channel_info - Find driver's private channel info
4309  *
4310  * Based on band and channel number.
4311  */
4312 const struct iwl_channel_info *
4313 iwl3945_get_channel_info(const struct iwl_priv *priv,
4314                          enum ieee80211_band band, u16 channel)
4315 {
4316         int i;
4317
4318         switch (band) {
4319         case IEEE80211_BAND_5GHZ:
4320                 for (i = 14; i < priv->channel_count; i++) {
4321                         if (priv->channel_info[i].channel == channel)
4322                                 return &priv->channel_info[i];
4323                 }
4324                 break;
4325
4326         case IEEE80211_BAND_2GHZ:
4327                 if (channel >= 1 && channel <= 14)
4328                         return &priv->channel_info[channel - 1];
4329                 break;
4330         case IEEE80211_NUM_BANDS:
4331                 WARN_ON(1);
4332         }
4333
4334         return NULL;
4335 }
4336
4337 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4338                             ? # x " " : "")
4339
4340 /**
4341  * iwl3945_init_channel_map - Set up driver's info for all possible channels
4342  */
4343 static int iwl3945_init_channel_map(struct iwl_priv *priv)
4344 {
4345         int eeprom_ch_count = 0;
4346         const u8 *eeprom_ch_index = NULL;
4347         const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
4348         int band, ch;
4349         struct iwl_channel_info *ch_info;
4350
4351         if (priv->channel_count) {
4352                 IWL_DEBUG_INFO("Channel map already initialized.\n");
4353                 return 0;
4354         }
4355
4356         if (priv->eeprom39.version < 0x2f) {
4357                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4358                             priv->eeprom39.version);
4359                 return -EINVAL;
4360         }
4361
4362         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4363
4364         priv->channel_count =
4365             ARRAY_SIZE(iwl3945_eeprom_band_1) +
4366             ARRAY_SIZE(iwl3945_eeprom_band_2) +
4367             ARRAY_SIZE(iwl3945_eeprom_band_3) +
4368             ARRAY_SIZE(iwl3945_eeprom_band_4) +
4369             ARRAY_SIZE(iwl3945_eeprom_band_5);
4370
4371         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4372
4373         priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
4374                                      priv->channel_count, GFP_KERNEL);
4375         if (!priv->channel_info) {
4376                 IWL_ERR(priv, "Could not allocate channel_info\n");
4377                 priv->channel_count = 0;
4378                 return -ENOMEM;
4379         }
4380
4381         ch_info = priv->channel_info;
4382
4383         /* Loop through the 5 EEPROM bands adding them in order to the
4384          * channel map we maintain (that contains additional information than
4385          * what just in the EEPROM) */
4386         for (band = 1; band <= 5; band++) {
4387
4388                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4389                                         &eeprom_ch_info, &eeprom_ch_index);
4390
4391                 /* Loop through each band adding each of the channels */
4392                 for (ch = 0; ch < eeprom_ch_count; ch++) {
4393                         ch_info->channel = eeprom_ch_index[ch];
4394                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4395                             IEEE80211_BAND_5GHZ;
4396
4397                         /* permanently store EEPROM's channel regulatory flags
4398                          *   and max power in channel info database. */
4399                         ch_info->eeprom = eeprom_ch_info[ch];
4400
4401                         /* Copy the run-time flags so they are there even on
4402                          * invalid channels */
4403                         ch_info->flags = eeprom_ch_info[ch].flags;
4404
4405                         if (!(is_channel_valid(ch_info))) {
4406                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4407                                                "No traffic\n",
4408                                                ch_info->channel,
4409                                                ch_info->flags,
4410                                                is_channel_a_band(ch_info) ?
4411                                                "5.2" : "2.4");
4412                                 ch_info++;
4413                                 continue;
4414                         }
4415
4416                         /* Initialize regulatory-based run-time data */
4417                         ch_info->max_power_avg = ch_info->curr_txpow =
4418                             eeprom_ch_info[ch].max_power_avg;
4419                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4420                         ch_info->min_power = 0;
4421
4422                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
4423                                        " %ddBm): Ad-Hoc %ssupported\n",
4424                                        ch_info->channel,
4425                                        is_channel_a_band(ch_info) ?
4426                                        "5.2" : "2.4",
4427                                        CHECK_AND_PRINT(VALID),
4428                                        CHECK_AND_PRINT(IBSS),
4429                                        CHECK_AND_PRINT(ACTIVE),
4430                                        CHECK_AND_PRINT(RADAR),
4431                                        CHECK_AND_PRINT(WIDE),
4432                                        CHECK_AND_PRINT(DFS),
4433                                        eeprom_ch_info[ch].flags,
4434                                        eeprom_ch_info[ch].max_power_avg,
4435                                        ((eeprom_ch_info[ch].
4436                                          flags & EEPROM_CHANNEL_IBSS)
4437                                         && !(eeprom_ch_info[ch].
4438                                              flags & EEPROM_CHANNEL_RADAR))
4439                                        ? "" : "not ");
4440
4441                         /* Set the user_txpower_limit to the highest power
4442                          * supported by any channel */
4443                         if (eeprom_ch_info[ch].max_power_avg >
4444                             priv->user_txpower_limit)
4445                                 priv->user_txpower_limit =
4446                                     eeprom_ch_info[ch].max_power_avg;
4447
4448                         ch_info++;
4449                 }
4450         }
4451
4452         /* Set up txpower settings in driver for all channels */
4453         if (iwl3945_txpower_set_from_eeprom(priv))
4454                 return -EIO;
4455
4456         return 0;
4457 }
4458
4459 /*
4460  * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4461  */
4462 static void iwl3945_free_channel_map(struct iwl_priv *priv)
4463 {
4464         kfree(priv->channel_info);
4465         priv->channel_count = 0;
4466 }
4467
4468 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4469  * sending probe req.  This should be set long enough to hear probe responses
4470  * from more than one AP.  */
4471 #define IWL_ACTIVE_DWELL_TIME_24    (30)        /* all times in msec */
4472 #define IWL_ACTIVE_DWELL_TIME_52    (20)
4473
4474 #define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
4475 #define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
4476
4477 /* For faster active scanning, scan will move to the next channel if fewer than
4478  * PLCP_QUIET_THRESH packets are heard on this channel within
4479  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4480  * time if it's a quiet channel (nothing responded to our probe, and there's
4481  * no other traffic).
4482  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4483 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4484 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(10)  /* msec */
4485
4486 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4487  * Must be set longer than active dwell time.
4488  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4489 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4490 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4491 #define IWL_PASSIVE_DWELL_BASE      (100)
4492 #define IWL_CHANNEL_TUNE_TIME       5
4493
4494 #define IWL_SCAN_PROBE_MASK(n)   (BIT(n) | (BIT(n) - BIT(1)))
4495
4496 static inline u16 iwl3945_get_active_dwell_time(struct iwl_priv *priv,
4497                                                 enum ieee80211_band band,
4498                                                 u8 n_probes)
4499 {
4500         if (band == IEEE80211_BAND_5GHZ)
4501                 return IWL_ACTIVE_DWELL_TIME_52 +
4502                         IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
4503         else
4504                 return IWL_ACTIVE_DWELL_TIME_24 +
4505                         IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
4506 }
4507
4508 static u16 iwl3945_get_passive_dwell_time(struct iwl_priv *priv,
4509                                           enum ieee80211_band band)
4510 {
4511         u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4512             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4513             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4514
4515         if (iwl3945_is_associated(priv)) {
4516                 /* If we're associated, we clamp the maximum passive
4517                  * dwell time to be 98% of the beacon interval (minus
4518                  * 2 * channel tune time) */
4519                 passive = priv->beacon_int;
4520                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4521                         passive = IWL_PASSIVE_DWELL_BASE;
4522                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4523         }
4524
4525         return passive;
4526 }
4527
4528 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
4529                                          enum ieee80211_band band,
4530                                      u8 is_active, u8 n_probes,
4531                                      struct iwl3945_scan_channel *scan_ch)
4532 {
4533         const struct ieee80211_channel *channels = NULL;
4534         const struct ieee80211_supported_band *sband;
4535         const struct iwl_channel_info *ch_info;
4536         u16 passive_dwell = 0;
4537         u16 active_dwell = 0;
4538         int added, i;
4539
4540         sband = iwl3945_get_band(priv, band);
4541         if (!sband)
4542                 return 0;
4543
4544         channels = sband->channels;
4545
4546         active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4547         passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4548
4549         if (passive_dwell <= active_dwell)
4550                 passive_dwell = active_dwell + 1;
4551
4552         for (i = 0, added = 0; i < sband->n_channels; i++) {
4553                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4554                         continue;
4555
4556                 scan_ch->channel = channels[i].hw_value;
4557
4558                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4559                 if (!is_channel_valid(ch_info)) {
4560                         IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4561                                        scan_ch->channel);
4562                         continue;
4563                 }
4564
4565                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4566                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4567                 /* If passive , set up for auto-switch
4568                  *  and use long active_dwell time.
4569                  */
4570                 if (!is_active || is_channel_passive(ch_info) ||
4571                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
4572                         scan_ch->type = 0;      /* passive */
4573                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
4574                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
4575                 } else {
4576                         scan_ch->type = 1;      /* active */
4577                 }
4578
4579                 /* Set direct probe bits. These may be used both for active
4580                  * scan channels (probes gets sent right away),
4581                  * or for passive channels (probes get se sent only after
4582                  * hearing clear Rx packet).*/
4583                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
4584                         if (n_probes)
4585                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4586                 } else {
4587                         /* uCode v1 does not allow setting direct probe bits on
4588                          * passive channel. */
4589                         if ((scan_ch->type & 1) && n_probes)
4590                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4591                 }
4592
4593                 /* Set txpower levels to defaults */
4594                 scan_ch->tpc.dsp_atten = 110;
4595                 /* scan_pwr_info->tpc.dsp_atten; */
4596
4597                 /*scan_pwr_info->tpc.tx_gain; */
4598                 if (band == IEEE80211_BAND_5GHZ)
4599                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4600                 else {
4601                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4602                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4603                          * power level:
4604                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4605                          */
4606                 }
4607
4608                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4609                                scan_ch->channel,
4610                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4611                                (scan_ch->type & 1) ?
4612                                active_dwell : passive_dwell);
4613
4614                 scan_ch++;
4615                 added++;
4616         }
4617
4618         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4619         return added;
4620 }
4621
4622 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
4623                               struct ieee80211_rate *rates)
4624 {
4625         int i;
4626
4627         for (i = 0; i < IWL_RATE_COUNT; i++) {
4628                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4629                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4630                 rates[i].hw_value_short = i;
4631                 rates[i].flags = 0;
4632                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4633                         /*
4634                          * If CCK != 1M then set short preamble rate flag.
4635                          */
4636                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4637                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4638                 }
4639         }
4640 }
4641
4642 /**
4643  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
4644  */
4645 static int iwl3945_init_geos(struct iwl_priv *priv)
4646 {
4647         struct iwl_channel_info *ch;
4648         struct ieee80211_supported_band *sband;
4649         struct ieee80211_channel *channels;
4650         struct ieee80211_channel *geo_ch;
4651         struct ieee80211_rate *rates;
4652         int i = 0;
4653
4654         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4655             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4656                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4657                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4658                 return 0;
4659         }
4660
4661         channels = kzalloc(sizeof(struct ieee80211_channel) *
4662                            priv->channel_count, GFP_KERNEL);
4663         if (!channels)
4664                 return -ENOMEM;
4665
4666         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4667                         GFP_KERNEL);
4668         if (!rates) {
4669                 kfree(channels);
4670                 return -ENOMEM;
4671         }
4672
4673         /* 5.2GHz channels start after the 2.4GHz channels */
4674         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4675         sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4676         /* just OFDM */
4677         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4678         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4679
4680         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4681         sband->channels = channels;
4682         /* OFDM & CCK */
4683         sband->bitrates = rates;
4684         sband->n_bitrates = IWL_RATE_COUNT;
4685
4686         priv->ieee_channels = channels;
4687         priv->ieee_rates = rates;
4688
4689         iwl3945_init_hw_rates(priv, rates);
4690
4691         for (i = 0;  i < priv->channel_count; i++) {
4692                 ch = &priv->channel_info[i];
4693
4694                 /* FIXME: might be removed if scan is OK*/
4695                 if (!is_channel_valid(ch))
4696                         continue;
4697
4698                 if (is_channel_a_band(ch))
4699                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4700                 else
4701                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4702
4703                 geo_ch = &sband->channels[sband->n_channels++];
4704
4705                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4706                 geo_ch->max_power = ch->max_power_avg;
4707                 geo_ch->max_antenna_gain = 0xff;
4708                 geo_ch->hw_value = ch->channel;
4709
4710                 if (is_channel_valid(ch)) {
4711                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4712                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4713
4714                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4715                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4716
4717                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4718                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4719
4720                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4721                                 priv->max_channel_txpower_limit =
4722                                     ch->max_power_avg;
4723                 } else {
4724                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4725                 }
4726
4727                 /* Save flags for reg domain usage */
4728                 geo_ch->orig_flags = geo_ch->flags;
4729
4730                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4731                                 ch->channel, geo_ch->center_freq,
4732                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4733                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4734                                 "restricted" : "valid",
4735                                  geo_ch->flags);
4736         }
4737
4738         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4739              priv->cfg->sku & IWL_SKU_A) {
4740                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
4741                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
4742                         priv->pci_dev->device, priv->pci_dev->subsystem_device);
4743                  priv->cfg->sku &= ~IWL_SKU_A;
4744         }
4745
4746         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4747                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4748                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4749
4750         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4751                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4752                         &priv->bands[IEEE80211_BAND_2GHZ];
4753         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4754                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4755                         &priv->bands[IEEE80211_BAND_5GHZ];
4756
4757         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4758
4759         return 0;
4760 }
4761
4762 /*
4763  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
4764  */
4765 static void iwl3945_free_geos(struct iwl_priv *priv)
4766 {
4767         kfree(priv->ieee_channels);
4768         kfree(priv->ieee_rates);
4769         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4770 }
4771
4772 /******************************************************************************
4773  *
4774  * uCode download functions
4775  *
4776  ******************************************************************************/
4777
4778 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
4779 {
4780         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4781         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4782         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4783         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4784         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4785         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4786 }
4787
4788 /**
4789  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
4790  *     looking at all data.
4791  */
4792 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
4793 {
4794         u32 val;
4795         u32 save_len = len;
4796         int rc = 0;
4797         u32 errcnt;
4798
4799         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4800
4801         rc = iwl_grab_nic_access(priv);
4802         if (rc)
4803                 return rc;
4804
4805         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4806                                IWL39_RTC_INST_LOWER_BOUND);
4807
4808         errcnt = 0;
4809         for (; len > 0; len -= sizeof(u32), image++) {
4810                 /* read data comes through single port, auto-incr addr */
4811                 /* NOTE: Use the debugless read so we don't flood kernel log
4812                  * if IWL_DL_IO is set */
4813                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4814                 if (val != le32_to_cpu(*image)) {
4815                         IWL_ERR(priv, "uCode INST section is invalid at "
4816                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4817                                   save_len - len, val, le32_to_cpu(*image));
4818                         rc = -EIO;
4819                         errcnt++;
4820                         if (errcnt >= 20)
4821                                 break;
4822                 }
4823         }
4824
4825         iwl_release_nic_access(priv);
4826
4827         if (!errcnt)
4828                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
4829
4830         return rc;
4831 }
4832
4833
4834 /**
4835  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
4836  *   using sample data 100 bytes apart.  If these sample points are good,
4837  *   it's a pretty good bet that everything between them is good, too.
4838  */
4839 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4840 {
4841         u32 val;
4842         int rc = 0;
4843         u32 errcnt = 0;
4844         u32 i;
4845
4846         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4847
4848         rc = iwl_grab_nic_access(priv);
4849         if (rc)
4850                 return rc;
4851
4852         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4853                 /* read data comes through single port, auto-incr addr */
4854                 /* NOTE: Use the debugless read so we don't flood kernel log
4855                  * if IWL_DL_IO is set */
4856                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4857                         i + IWL39_RTC_INST_LOWER_BOUND);
4858                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4859                 if (val != le32_to_cpu(*image)) {
4860 #if 0 /* Enable this if you want to see details */
4861                         IWL_ERR(priv, "uCode INST section is invalid at "
4862                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4863                                   i, val, *image);
4864 #endif
4865                         rc = -EIO;
4866                         errcnt++;
4867                         if (errcnt >= 3)
4868                                 break;
4869                 }
4870         }
4871
4872         iwl_release_nic_access(priv);
4873
4874         return rc;
4875 }
4876
4877
4878 /**
4879  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
4880  *    and verify its contents
4881  */
4882 static int iwl3945_verify_ucode(struct iwl_priv *priv)
4883 {
4884         __le32 *image;
4885         u32 len;
4886         int rc = 0;
4887
4888         /* Try bootstrap */
4889         image = (__le32 *)priv->ucode_boot.v_addr;
4890         len = priv->ucode_boot.len;
4891         rc = iwl3945_verify_inst_sparse(priv, image, len);
4892         if (rc == 0) {
4893                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
4894                 return 0;
4895         }
4896
4897         /* Try initialize */
4898         image = (__le32 *)priv->ucode_init.v_addr;
4899         len = priv->ucode_init.len;
4900         rc = iwl3945_verify_inst_sparse(priv, image, len);
4901         if (rc == 0) {
4902                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
4903                 return 0;
4904         }
4905
4906         /* Try runtime/protocol */
4907         image = (__le32 *)priv->ucode_code.v_addr;
4908         len = priv->ucode_code.len;
4909         rc = iwl3945_verify_inst_sparse(priv, image, len);
4910         if (rc == 0) {
4911                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
4912                 return 0;
4913         }
4914
4915         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
4916
4917         /* Since nothing seems to match, show first several data entries in
4918          * instruction SRAM, so maybe visual inspection will give a clue.
4919          * Selection of bootstrap image (vs. other images) is arbitrary. */
4920         image = (__le32 *)priv->ucode_boot.v_addr;
4921         len = priv->ucode_boot.len;
4922         rc = iwl3945_verify_inst_full(priv, image, len);
4923
4924         return rc;
4925 }
4926
4927
4928 /* check contents of special bootstrap uCode SRAM */
4929 static int iwl3945_verify_bsm(struct iwl_priv *priv)
4930 {
4931         __le32 *image = priv->ucode_boot.v_addr;
4932         u32 len = priv->ucode_boot.len;
4933         u32 reg;
4934         u32 val;
4935
4936         IWL_DEBUG_INFO("Begin verify bsm\n");
4937
4938         /* verify BSM SRAM contents */
4939         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
4940         for (reg = BSM_SRAM_LOWER_BOUND;
4941              reg < BSM_SRAM_LOWER_BOUND + len;
4942              reg += sizeof(u32), image++) {
4943                 val = iwl_read_prph(priv, reg);
4944                 if (val != le32_to_cpu(*image)) {
4945                         IWL_ERR(priv, "BSM uCode verification failed at "
4946                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
4947                                   BSM_SRAM_LOWER_BOUND,
4948                                   reg - BSM_SRAM_LOWER_BOUND, len,
4949                                   val, le32_to_cpu(*image));
4950                         return -EIO;
4951                 }
4952         }
4953
4954         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
4955
4956         return 0;
4957 }
4958
4959 /**
4960  * iwl3945_load_bsm - Load bootstrap instructions
4961  *
4962  * BSM operation:
4963  *
4964  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
4965  * in special SRAM that does not power down during RFKILL.  When powering back
4966  * up after power-saving sleeps (or during initial uCode load), the BSM loads
4967  * the bootstrap program into the on-board processor, and starts it.
4968  *
4969  * The bootstrap program loads (via DMA) instructions and data for a new
4970  * program from host DRAM locations indicated by the host driver in the
4971  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
4972  * automatically.
4973  *
4974  * When initializing the NIC, the host driver points the BSM to the
4975  * "initialize" uCode image.  This uCode sets up some internal data, then
4976  * notifies host via "initialize alive" that it is complete.
4977  *
4978  * The host then replaces the BSM_DRAM_* pointer values to point to the
4979  * normal runtime uCode instructions and a backup uCode data cache buffer
4980  * (filled initially with starting data values for the on-board processor),
4981  * then triggers the "initialize" uCode to load and launch the runtime uCode,
4982  * which begins normal operation.
4983  *
4984  * When doing a power-save shutdown, runtime uCode saves data SRAM into
4985  * the backup data cache in DRAM before SRAM is powered down.
4986  *
4987  * When powering back up, the BSM loads the bootstrap program.  This reloads
4988  * the runtime uCode instructions and the backup data cache into SRAM,
4989  * and re-launches the runtime uCode from where it left off.
4990  */
4991 static int iwl3945_load_bsm(struct iwl_priv *priv)
4992 {
4993         __le32 *image = priv->ucode_boot.v_addr;
4994         u32 len = priv->ucode_boot.len;
4995         dma_addr_t pinst;
4996         dma_addr_t pdata;
4997         u32 inst_len;
4998         u32 data_len;
4999         int rc;
5000         int i;
5001         u32 done;
5002         u32 reg_offset;
5003
5004         IWL_DEBUG_INFO("Begin load bsm\n");
5005
5006         /* make sure bootstrap program is no larger than BSM's SRAM size */
5007         if (len > IWL39_MAX_BSM_SIZE)
5008                 return -EINVAL;
5009
5010         /* Tell bootstrap uCode where to find the "Initialize" uCode
5011          *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5012          * NOTE:  iwl3945_initialize_alive_start() will replace these values,
5013          *        after the "initialize" uCode has run, to point to
5014          *        runtime/protocol instructions and backup data cache. */
5015         pinst = priv->ucode_init.p_addr;
5016         pdata = priv->ucode_init_data.p_addr;
5017         inst_len = priv->ucode_init.len;
5018         data_len = priv->ucode_init_data.len;
5019
5020         rc = iwl_grab_nic_access(priv);
5021         if (rc)
5022                 return rc;
5023
5024         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5025         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5026         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5027         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5028
5029         /* Fill BSM memory with bootstrap instructions */
5030         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5031              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5032              reg_offset += sizeof(u32), image++)
5033                 _iwl_write_prph(priv, reg_offset,
5034                                           le32_to_cpu(*image));
5035
5036         rc = iwl3945_verify_bsm(priv);
5037         if (rc) {
5038                 iwl_release_nic_access(priv);
5039                 return rc;
5040         }
5041
5042         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5043         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5044         iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
5045                                  IWL39_RTC_INST_LOWER_BOUND);
5046         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5047
5048         /* Load bootstrap code into instruction SRAM now,
5049          *   to prepare to load "initialize" uCode */
5050         iwl_write_prph(priv, BSM_WR_CTRL_REG,
5051                 BSM_WR_CTRL_REG_BIT_START);
5052
5053         /* Wait for load of bootstrap uCode to finish */
5054         for (i = 0; i < 100; i++) {
5055                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
5056                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5057                         break;
5058                 udelay(10);
5059         }
5060         if (i < 100)
5061                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5062         else {
5063                 IWL_ERR(priv, "BSM write did not complete!\n");
5064                 return -EIO;
5065         }
5066
5067         /* Enable future boot loads whenever power management unit triggers it
5068          *   (e.g. when powering back up after power-save shutdown) */
5069         iwl_write_prph(priv, BSM_WR_CTRL_REG,
5070                 BSM_WR_CTRL_REG_BIT_START_EN);
5071
5072         iwl_release_nic_access(priv);
5073
5074         return 0;
5075 }
5076
5077 static void iwl3945_nic_start(struct iwl_priv *priv)
5078 {
5079         /* Remove all resets to allow NIC to operate */
5080         iwl_write32(priv, CSR_RESET, 0);
5081 }
5082
5083 /**
5084  * iwl3945_read_ucode - Read uCode images from disk file.
5085  *
5086  * Copy into buffers for card to fetch via bus-mastering
5087  */
5088 static int iwl3945_read_ucode(struct iwl_priv *priv)
5089 {
5090         struct iwl_ucode *ucode;
5091         int ret = -EINVAL, index;
5092         const struct firmware *ucode_raw;
5093         /* firmware file name contains uCode/driver compatibility version */
5094         const char *name_pre = priv->cfg->fw_name_pre;
5095         const unsigned int api_max = priv->cfg->ucode_api_max;
5096         const unsigned int api_min = priv->cfg->ucode_api_min;
5097         char buf[25];
5098         u8 *src;
5099         size_t len;
5100         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
5101
5102         /* Ask kernel firmware_class module to get the boot firmware off disk.
5103          * request_firmware() is synchronous, file is in memory on return. */
5104         for (index = api_max; index >= api_min; index--) {
5105                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
5106                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
5107                 if (ret < 0) {
5108                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
5109                                   buf, ret);
5110                         if (ret == -ENOENT)
5111                                 continue;
5112                         else
5113                                 goto error;
5114                 } else {
5115                         if (index < api_max)
5116                                 IWL_ERR(priv, "Loaded firmware %s, "
5117                                         "which is deprecated. "
5118                                         " Please use API v%u instead.\n",
5119                                           buf, api_max);
5120                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5121                                        buf, ucode_raw->size);
5122                         break;
5123                 }
5124         }
5125
5126         if (ret < 0)
5127                 goto error;
5128
5129         /* Make sure that we got at least our header! */
5130         if (ucode_raw->size < sizeof(*ucode)) {
5131                 IWL_ERR(priv, "File size way too small!\n");
5132                 ret = -EINVAL;
5133                 goto err_release;
5134         }
5135
5136         /* Data from ucode file:  header followed by uCode images */
5137         ucode = (void *)ucode_raw->data;
5138
5139         priv->ucode_ver = le32_to_cpu(ucode->ver);
5140         api_ver = IWL_UCODE_API(priv->ucode_ver);
5141         inst_size = le32_to_cpu(ucode->inst_size);
5142         data_size = le32_to_cpu(ucode->data_size);
5143         init_size = le32_to_cpu(ucode->init_size);
5144         init_data_size = le32_to_cpu(ucode->init_data_size);
5145         boot_size = le32_to_cpu(ucode->boot_size);
5146
5147         /* api_ver should match the api version forming part of the
5148          * firmware filename ... but we don't check for that and only rely
5149          * on the API version read from firware header from here on forward */
5150
5151         if (api_ver < api_min || api_ver > api_max) {
5152                 IWL_ERR(priv, "Driver unable to support your firmware API. "
5153                           "Driver supports v%u, firmware is v%u.\n",
5154                           api_max, api_ver);
5155                 priv->ucode_ver = 0;
5156                 ret = -EINVAL;
5157                 goto err_release;
5158         }
5159         if (api_ver != api_max)
5160                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
5161                           "got %u. New firmware can be obtained "
5162                           "from http://www.intellinuxwireless.org.\n",
5163                           api_max, api_ver);
5164
5165         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
5166                 IWL_UCODE_MAJOR(priv->ucode_ver),
5167                 IWL_UCODE_MINOR(priv->ucode_ver),
5168                 IWL_UCODE_API(priv->ucode_ver),
5169                 IWL_UCODE_SERIAL(priv->ucode_ver));
5170
5171         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
5172                        priv->ucode_ver);
5173         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5174         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5175         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5176         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5177         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5178
5179
5180         /* Verify size of file vs. image size info in file's header */
5181         if (ucode_raw->size < sizeof(*ucode) +
5182                 inst_size + data_size + init_size +
5183                 init_data_size + boot_size) {
5184
5185                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5186                                (int)ucode_raw->size);
5187                 ret = -EINVAL;
5188                 goto err_release;
5189         }
5190
5191         /* Verify that uCode images will fit in card's SRAM */
5192         if (inst_size > IWL39_MAX_INST_SIZE) {
5193                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5194                                inst_size);
5195                 ret = -EINVAL;
5196                 goto err_release;
5197         }
5198
5199         if (data_size > IWL39_MAX_DATA_SIZE) {
5200                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5201                                data_size);
5202                 ret = -EINVAL;
5203                 goto err_release;
5204         }
5205         if (init_size > IWL39_MAX_INST_SIZE) {
5206                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5207                                 init_size);
5208                 ret = -EINVAL;
5209                 goto err_release;
5210         }
5211         if (init_data_size > IWL39_MAX_DATA_SIZE) {
5212                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5213                                 init_data_size);
5214                 ret = -EINVAL;
5215                 goto err_release;
5216         }
5217         if (boot_size > IWL39_MAX_BSM_SIZE) {
5218                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5219                                 boot_size);
5220                 ret = -EINVAL;
5221                 goto err_release;
5222         }
5223
5224         /* Allocate ucode buffers for card's bus-master loading ... */
5225
5226         /* Runtime instructions and 2 copies of data:
5227          * 1) unmodified from disk
5228          * 2) backup cache for save/restore during power-downs */
5229         priv->ucode_code.len = inst_size;
5230         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5231
5232         priv->ucode_data.len = data_size;
5233         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5234
5235         priv->ucode_data_backup.len = data_size;
5236         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5237
5238         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5239             !priv->ucode_data_backup.v_addr)
5240                 goto err_pci_alloc;
5241
5242         /* Initialization instructions and data */
5243         if (init_size && init_data_size) {
5244                 priv->ucode_init.len = init_size;
5245                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5246
5247                 priv->ucode_init_data.len = init_data_size;
5248                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5249
5250                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5251                         goto err_pci_alloc;
5252         }
5253
5254         /* Bootstrap (instructions only, no data) */
5255         if (boot_size) {
5256                 priv->ucode_boot.len = boot_size;
5257                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5258
5259                 if (!priv->ucode_boot.v_addr)
5260                         goto err_pci_alloc;
5261         }
5262
5263         /* Copy images into buffers for card's bus-master reads ... */
5264
5265         /* Runtime instructions (first block of data in file) */
5266         src = &ucode->data[0];
5267         len = priv->ucode_code.len;
5268         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5269         memcpy(priv->ucode_code.v_addr, src, len);
5270         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5271                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5272
5273         /* Runtime data (2nd block)
5274          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
5275         src = &ucode->data[inst_size];
5276         len = priv->ucode_data.len;
5277         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5278         memcpy(priv->ucode_data.v_addr, src, len);
5279         memcpy(priv->ucode_data_backup.v_addr, src, len);
5280
5281         /* Initialization instructions (3rd block) */
5282         if (init_size) {
5283                 src = &ucode->data[inst_size + data_size];
5284                 len = priv->ucode_init.len;
5285                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5286                                len);
5287                 memcpy(priv->ucode_init.v_addr, src, len);
5288         }
5289
5290         /* Initialization data (4th block) */
5291         if (init_data_size) {
5292                 src = &ucode->data[inst_size + data_size + init_size];
5293                 len = priv->ucode_init_data.len;
5294                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5295                                (int)len);
5296                 memcpy(priv->ucode_init_data.v_addr, src, len);
5297         }
5298
5299         /* Bootstrap instructions (5th block) */
5300         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5301         len = priv->ucode_boot.len;
5302         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5303                        (int)len);
5304         memcpy(priv->ucode_boot.v_addr, src, len);
5305
5306         /* We have our copies now, allow OS release its copies */
5307         release_firmware(ucode_raw);
5308         return 0;
5309
5310  err_pci_alloc:
5311         IWL_ERR(priv, "failed to allocate pci memory\n");
5312         ret = -ENOMEM;
5313         iwl3945_dealloc_ucode_pci(priv);
5314
5315  err_release:
5316         release_firmware(ucode_raw);
5317
5318  error:
5319         return ret;
5320 }
5321
5322
5323 /**
5324  * iwl3945_set_ucode_ptrs - Set uCode address location
5325  *
5326  * Tell initialization uCode where to find runtime uCode.
5327  *
5328  * BSM registers initially contain pointers to initialization uCode.
5329  * We need to replace them to load runtime uCode inst and data,
5330  * and to save runtime data when powering down.
5331  */
5332 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
5333 {
5334         dma_addr_t pinst;
5335         dma_addr_t pdata;
5336         int rc = 0;
5337         unsigned long flags;
5338
5339         /* bits 31:0 for 3945 */
5340         pinst = priv->ucode_code.p_addr;
5341         pdata = priv->ucode_data_backup.p_addr;
5342
5343         spin_lock_irqsave(&priv->lock, flags);
5344         rc = iwl_grab_nic_access(priv);
5345         if (rc) {
5346                 spin_unlock_irqrestore(&priv->lock, flags);
5347                 return rc;
5348         }
5349
5350         /* Tell bootstrap uCode where to find image to load */
5351         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5352         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5353         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5354                                  priv->ucode_data.len);
5355
5356         /* Inst byte count must be last to set up, bit 31 signals uCode
5357          *   that all new ptr/size info is in place */
5358         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5359                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5360
5361         iwl_release_nic_access(priv);
5362
5363         spin_unlock_irqrestore(&priv->lock, flags);
5364
5365         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5366
5367         return rc;
5368 }
5369
5370 /**
5371  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5372  *
5373  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5374  *
5375  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5376  */
5377 static void iwl3945_init_alive_start(struct iwl_priv *priv)
5378 {
5379         /* Check alive response for "valid" sign from uCode */
5380         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5381                 /* We had an error bringing up the hardware, so take it
5382                  * all the way back down so we can try again */
5383                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5384                 goto restart;
5385         }
5386
5387         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5388          * This is a paranoid check, because we would not have gotten the
5389          * "initialize" alive if code weren't properly loaded.  */
5390         if (iwl3945_verify_ucode(priv)) {
5391                 /* Runtime instruction load was bad;
5392                  * take it all the way back down so we can try again */
5393                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5394                 goto restart;
5395         }
5396
5397         /* Send pointers to protocol/runtime uCode image ... init code will
5398          * load and launch runtime uCode, which will send us another "Alive"
5399          * notification. */
5400         IWL_DEBUG_INFO("Initialization Alive received.\n");
5401         if (iwl3945_set_ucode_ptrs(priv)) {
5402                 /* Runtime instruction load won't happen;
5403                  * take it all the way back down so we can try again */
5404                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5405                 goto restart;
5406         }
5407         return;
5408
5409  restart:
5410         queue_work(priv->workqueue, &priv->restart);
5411 }
5412
5413
5414 /* temporary */
5415 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
5416                                      struct sk_buff *skb);
5417
5418 /**
5419  * iwl3945_alive_start - called after REPLY_ALIVE notification received
5420  *                   from protocol/runtime uCode (initialization uCode's
5421  *                   Alive gets handled by iwl3945_init_alive_start()).
5422  */
5423 static void iwl3945_alive_start(struct iwl_priv *priv)
5424 {
5425         int rc = 0;
5426         int thermal_spin = 0;
5427         u32 rfkill;
5428
5429         IWL_DEBUG_INFO("Runtime Alive received.\n");
5430
5431         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5432                 /* We had an error bringing up the hardware, so take it
5433                  * all the way back down so we can try again */
5434                 IWL_DEBUG_INFO("Alive failed.\n");
5435                 goto restart;
5436         }
5437
5438         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5439          * This is a paranoid check, because we would not have gotten the
5440          * "runtime" alive if code weren't properly loaded.  */
5441         if (iwl3945_verify_ucode(priv)) {
5442                 /* Runtime instruction load was bad;
5443                  * take it all the way back down so we can try again */
5444                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5445                 goto restart;
5446         }
5447
5448         iwl3945_clear_stations_table(priv);
5449
5450         rc = iwl_grab_nic_access(priv);
5451         if (rc) {
5452                 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
5453                 return;
5454         }
5455
5456         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
5457         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5458         iwl_release_nic_access(priv);
5459
5460         if (rfkill & 0x1) {
5461                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5462                 /* if RFKILL is not on, then wait for thermal
5463                  * sensor in adapter to kick in */
5464                 while (iwl3945_hw_get_temperature(priv) == 0) {
5465                         thermal_spin++;
5466                         udelay(10);
5467                 }
5468
5469                 if (thermal_spin)
5470                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5471                                        thermal_spin * 10);
5472         } else
5473                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5474
5475         /* After the ALIVE response, we can send commands to 3945 uCode */
5476         set_bit(STATUS_ALIVE, &priv->status);
5477
5478         /* Clear out the uCode error bit if it is set */
5479         clear_bit(STATUS_FW_ERROR, &priv->status);
5480
5481         if (iwl_is_rfkill(priv))
5482                 return;
5483
5484         ieee80211_wake_queues(priv->hw);
5485
5486         priv->active_rate = priv->rates_mask;
5487         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5488
5489         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5490
5491         if (iwl3945_is_associated(priv)) {
5492                 struct iwl3945_rxon_cmd *active_rxon =
5493                                 (struct iwl3945_rxon_cmd *)(&priv->active39_rxon);
5494
5495                 memcpy(&priv->staging39_rxon, &priv->active39_rxon,
5496                        sizeof(priv->staging39_rxon));
5497                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5498         } else {
5499                 /* Initialize our rx_config data */
5500                 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
5501                 memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5502         }
5503
5504         /* Configure Bluetooth device coexistence support */
5505         iwl3945_send_bt_config(priv);
5506
5507         /* Configure the adapter for unassociated operation */
5508         iwl3945_commit_rxon(priv);
5509
5510         iwl3945_reg_txpower_periodic(priv);
5511
5512         iwl3945_led_register(priv);
5513
5514         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5515         set_bit(STATUS_READY, &priv->status);
5516         wake_up_interruptible(&priv->wait_command_queue);
5517
5518         if (priv->error_recovering)
5519                 iwl3945_error_recovery(priv);
5520
5521         /* reassociate for ADHOC mode */
5522         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
5523                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
5524                                                                 priv->vif);
5525                 if (beacon)
5526                         iwl3945_mac_beacon_update(priv->hw, beacon);
5527         }
5528
5529         return;
5530
5531  restart:
5532         queue_work(priv->workqueue, &priv->restart);
5533 }
5534
5535 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
5536
5537 static void __iwl3945_down(struct iwl_priv *priv)
5538 {
5539         unsigned long flags;
5540         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5541         struct ieee80211_conf *conf = NULL;
5542
5543         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5544
5545         conf = ieee80211_get_hw_conf(priv->hw);
5546
5547         if (!exit_pending)
5548                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5549
5550         iwl3945_led_unregister(priv);
5551         iwl3945_clear_stations_table(priv);
5552
5553         /* Unblock any waiting calls */
5554         wake_up_interruptible_all(&priv->wait_command_queue);
5555
5556         /* Wipe out the EXIT_PENDING status bit if we are not actually
5557          * exiting the module */
5558         if (!exit_pending)
5559                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5560
5561         /* stop and reset the on-board processor */
5562         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5563
5564         /* tell the device to stop sending interrupts */
5565         spin_lock_irqsave(&priv->lock, flags);
5566         iwl3945_disable_interrupts(priv);
5567         spin_unlock_irqrestore(&priv->lock, flags);
5568         iwl_synchronize_irq(priv);
5569
5570         if (priv->mac80211_registered)
5571                 ieee80211_stop_queues(priv->hw);
5572
5573         /* If we have not previously called iwl3945_init() then
5574          * clear all bits but the RF Kill and SUSPEND bits and return */
5575         if (!iwl_is_init(priv)) {
5576                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5577                                         STATUS_RF_KILL_HW |
5578                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5579                                         STATUS_RF_KILL_SW |
5580                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5581                                         STATUS_GEO_CONFIGURED |
5582                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5583                                         STATUS_IN_SUSPEND |
5584                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5585                                         STATUS_EXIT_PENDING;
5586                 goto exit;
5587         }
5588
5589         /* ...otherwise clear out all the status bits but the RF Kill and
5590          * SUSPEND bits and continue taking the NIC down. */
5591         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5592                                 STATUS_RF_KILL_HW |
5593                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5594                                 STATUS_RF_KILL_SW |
5595                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5596                                 STATUS_GEO_CONFIGURED |
5597                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5598                                 STATUS_IN_SUSPEND |
5599                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5600                                 STATUS_FW_ERROR |
5601                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5602                                 STATUS_EXIT_PENDING;
5603
5604         spin_lock_irqsave(&priv->lock, flags);
5605         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5606         spin_unlock_irqrestore(&priv->lock, flags);
5607
5608         iwl3945_hw_txq_ctx_stop(priv);
5609         iwl3945_hw_rxq_stop(priv);
5610
5611         spin_lock_irqsave(&priv->lock, flags);
5612         if (!iwl_grab_nic_access(priv)) {
5613                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5614                                          APMG_CLK_VAL_DMA_CLK_RQT);
5615                 iwl_release_nic_access(priv);
5616         }
5617         spin_unlock_irqrestore(&priv->lock, flags);
5618
5619         udelay(5);
5620
5621         iwl3945_hw_nic_stop_master(priv);
5622         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5623         iwl3945_hw_nic_reset(priv);
5624
5625  exit:
5626         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
5627
5628         if (priv->ibss_beacon)
5629                 dev_kfree_skb(priv->ibss_beacon);
5630         priv->ibss_beacon = NULL;
5631
5632         /* clear out any free frames */
5633         iwl3945_clear_free_frames(priv);
5634 }
5635
5636 static void iwl3945_down(struct iwl_priv *priv)
5637 {
5638         mutex_lock(&priv->mutex);
5639         __iwl3945_down(priv);
5640         mutex_unlock(&priv->mutex);
5641
5642         iwl3945_cancel_deferred_work(priv);
5643 }
5644
5645 #define MAX_HW_RESTARTS 5
5646
5647 static int __iwl3945_up(struct iwl_priv *priv)
5648 {
5649         int rc, i;
5650
5651         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5652                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
5653                 return -EIO;
5654         }
5655
5656         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5657                 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
5658                             "parameter)\n");
5659                 return -ENODEV;
5660         }
5661
5662         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5663                 IWL_ERR(priv, "ucode not available for device bring up\n");
5664                 return -EIO;
5665         }
5666
5667         /* If platform's RF_KILL switch is NOT set to KILL */
5668         if (iwl_read32(priv, CSR_GP_CNTRL) &
5669                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5670                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5671         else {
5672                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5673                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5674                         IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
5675                         return -ENODEV;
5676                 }
5677         }
5678
5679         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5680
5681         rc = iwl3945_hw_nic_init(priv);
5682         if (rc) {
5683                 IWL_ERR(priv, "Unable to int nic\n");
5684                 return rc;
5685         }
5686
5687         /* make sure rfkill handshake bits are cleared */
5688         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5689         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5690                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5691
5692         /* clear (again), then enable host interrupts */
5693         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5694         iwl3945_enable_interrupts(priv);
5695
5696         /* really make sure rfkill handshake bits are cleared */
5697         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5698         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5699
5700         /* Copy original ucode data image from disk into backup cache.
5701          * This will be used to initialize the on-board processor's
5702          * data SRAM for a clean start when the runtime program first loads. */
5703         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5704                priv->ucode_data.len);
5705
5706         /* We return success when we resume from suspend and rf_kill is on. */
5707         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5708                 return 0;
5709
5710         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5711
5712                 iwl3945_clear_stations_table(priv);
5713
5714                 /* load bootstrap state machine,
5715                  * load bootstrap program into processor's memory,
5716                  * prepare to load the "initialize" uCode */
5717                 rc = iwl3945_load_bsm(priv);
5718
5719                 if (rc) {
5720                         IWL_ERR(priv,
5721                                 "Unable to set up bootstrap uCode: %d\n", rc);
5722                         continue;
5723                 }
5724
5725                 /* start card; "initialize" will load runtime ucode */
5726                 iwl3945_nic_start(priv);
5727
5728                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5729
5730                 return 0;
5731         }
5732
5733         set_bit(STATUS_EXIT_PENDING, &priv->status);
5734         __iwl3945_down(priv);
5735         clear_bit(STATUS_EXIT_PENDING, &priv->status);
5736
5737         /* tried to restart and config the device for as long as our
5738          * patience could withstand */
5739         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
5740         return -EIO;
5741 }
5742
5743
5744 /*****************************************************************************
5745  *
5746  * Workqueue callbacks
5747  *
5748  *****************************************************************************/
5749
5750 static void iwl3945_bg_init_alive_start(struct work_struct *data)
5751 {
5752         struct iwl_priv *priv =
5753             container_of(data, struct iwl_priv, init_alive_start.work);
5754
5755         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5756                 return;
5757
5758         mutex_lock(&priv->mutex);
5759         iwl3945_init_alive_start(priv);
5760         mutex_unlock(&priv->mutex);
5761 }
5762
5763 static void iwl3945_bg_alive_start(struct work_struct *data)
5764 {
5765         struct iwl_priv *priv =
5766             container_of(data, struct iwl_priv, alive_start.work);
5767
5768         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5769                 return;
5770
5771         mutex_lock(&priv->mutex);
5772         iwl3945_alive_start(priv);
5773         mutex_unlock(&priv->mutex);
5774 }
5775
5776 static void iwl3945_bg_rf_kill(struct work_struct *work)
5777 {
5778         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5779
5780         wake_up_interruptible(&priv->wait_command_queue);
5781
5782         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5783                 return;
5784
5785         mutex_lock(&priv->mutex);
5786
5787         if (!iwl_is_rfkill(priv)) {
5788                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5789                           "HW and/or SW RF Kill no longer active, restarting "
5790                           "device\n");
5791                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5792                         queue_work(priv->workqueue, &priv->restart);
5793         } else {
5794
5795                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5796                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5797                                           "disabled by SW switch\n");
5798                 else
5799                         IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
5800                                     "Kill switch must be turned off for "
5801                                     "wireless networking to work.\n");
5802         }
5803
5804         mutex_unlock(&priv->mutex);
5805         iwl3945_rfkill_set_hw_state(priv);
5806 }
5807
5808 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5809
5810 static void iwl3945_bg_scan_check(struct work_struct *data)
5811 {
5812         struct iwl_priv *priv =
5813             container_of(data, struct iwl_priv, scan_check.work);
5814
5815         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5816                 return;
5817
5818         mutex_lock(&priv->mutex);
5819         if (test_bit(STATUS_SCANNING, &priv->status) ||
5820             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5821                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5822                           "Scan completion watchdog resetting adapter (%dms)\n",
5823                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5824
5825                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5826                         iwl3945_send_scan_abort(priv);
5827         }
5828         mutex_unlock(&priv->mutex);
5829 }
5830
5831 static void iwl3945_bg_request_scan(struct work_struct *data)
5832 {
5833         struct iwl_priv *priv =
5834             container_of(data, struct iwl_priv, request_scan);
5835         struct iwl_host_cmd cmd = {
5836                 .id = REPLY_SCAN_CMD,
5837                 .len = sizeof(struct iwl3945_scan_cmd),
5838                 .meta.flags = CMD_SIZE_HUGE,
5839         };
5840         int rc = 0;
5841         struct iwl3945_scan_cmd *scan;
5842         struct ieee80211_conf *conf = NULL;
5843         u8 n_probes = 2;
5844         enum ieee80211_band band;
5845         DECLARE_SSID_BUF(ssid);
5846
5847         conf = ieee80211_get_hw_conf(priv->hw);
5848
5849         mutex_lock(&priv->mutex);
5850
5851         if (!iwl_is_ready(priv)) {
5852                 IWL_WARN(priv, "request scan called when driver not ready.\n");
5853                 goto done;
5854         }
5855
5856         /* Make sure the scan wasn't canceled before this queued work
5857          * was given the chance to run... */
5858         if (!test_bit(STATUS_SCANNING, &priv->status))
5859                 goto done;
5860
5861         /* This should never be called or scheduled if there is currently
5862          * a scan active in the hardware. */
5863         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5864                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5865                                "Ignoring second request.\n");
5866                 rc = -EIO;
5867                 goto done;
5868         }
5869
5870         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5871                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5872                 goto done;
5873         }
5874
5875         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5876                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
5877                 goto done;
5878         }
5879
5880         if (iwl_is_rfkill(priv)) {
5881                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5882                 goto done;
5883         }
5884
5885         if (!test_bit(STATUS_READY, &priv->status)) {
5886                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
5887                 goto done;
5888         }
5889
5890         if (!priv->scan_bands) {
5891                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5892                 goto done;
5893         }
5894
5895         if (!priv->scan39) {
5896                 priv->scan39 = kmalloc(sizeof(struct iwl3945_scan_cmd) +
5897                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5898                 if (!priv->scan39) {
5899                         rc = -ENOMEM;
5900                         goto done;
5901                 }
5902         }
5903         scan = priv->scan39;
5904         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
5905
5906         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5907         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5908
5909         if (iwl3945_is_associated(priv)) {
5910                 u16 interval = 0;
5911                 u32 extra;
5912                 u32 suspend_time = 100;
5913                 u32 scan_suspend_time = 100;
5914                 unsigned long flags;
5915
5916                 IWL_DEBUG_INFO("Scanning while associated...\n");
5917
5918                 spin_lock_irqsave(&priv->lock, flags);
5919                 interval = priv->beacon_int;
5920                 spin_unlock_irqrestore(&priv->lock, flags);
5921
5922                 scan->suspend_time = 0;
5923                 scan->max_out_time = cpu_to_le32(200 * 1024);
5924                 if (!interval)
5925                         interval = suspend_time;
5926                 /*
5927                  * suspend time format:
5928                  *  0-19: beacon interval in usec (time before exec.)
5929                  * 20-23: 0
5930                  * 24-31: number of beacons (suspend between channels)
5931                  */
5932
5933                 extra = (suspend_time / interval) << 24;
5934                 scan_suspend_time = 0xFF0FFFFF &
5935                     (extra | ((suspend_time % interval) * 1024));
5936
5937                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5938                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5939                                scan_suspend_time, interval);
5940         }
5941
5942         /* We should add the ability for user to lock to PASSIVE ONLY */
5943         if (priv->one_direct_scan) {
5944                 IWL_DEBUG_SCAN
5945                     ("Kicking off one direct scan for '%s'\n",
5946                      print_ssid(ssid, priv->direct_ssid,
5947                                 priv->direct_ssid_len));
5948                 scan->direct_scan[0].id = WLAN_EID_SSID;
5949                 scan->direct_scan[0].len = priv->direct_ssid_len;
5950                 memcpy(scan->direct_scan[0].ssid,
5951                        priv->direct_ssid, priv->direct_ssid_len);
5952                 n_probes++;
5953         } else
5954                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
5955
5956         /* We don't build a direct scan probe request; the uCode will do
5957          * that based on the direct_mask added to each channel entry */
5958         scan->tx_cmd.len = cpu_to_le16(
5959                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
5960                         IWL_MAX_SCAN_SIZE - sizeof(*scan)));
5961         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5962         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
5963         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5964
5965         /* flags + rate selection */
5966
5967         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
5968                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5969                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
5970                 scan->good_CRC_th = 0;
5971                 band = IEEE80211_BAND_2GHZ;
5972         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
5973                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
5974                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5975                 band = IEEE80211_BAND_5GHZ;
5976         } else {
5977                 IWL_WARN(priv, "Invalid scan band count\n");
5978                 goto done;
5979         }
5980
5981         /* select Rx antennas */
5982         scan->flags |= iwl3945_get_antenna_flags(priv);
5983
5984         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
5985                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5986
5987         scan->channel_count =
5988                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
5989                                               n_probes,
5990                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5991
5992         if (scan->channel_count == 0) {
5993                 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
5994                 goto done;
5995         }
5996
5997         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5998             scan->channel_count * sizeof(struct iwl3945_scan_channel);
5999         cmd.data = scan;
6000         scan->len = cpu_to_le16(cmd.len);
6001
6002         set_bit(STATUS_SCAN_HW, &priv->status);
6003         rc = iwl3945_send_cmd_sync(priv, &cmd);
6004         if (rc)
6005                 goto done;
6006
6007         queue_delayed_work(priv->workqueue, &priv->scan_check,
6008                            IWL_SCAN_CHECK_WATCHDOG);
6009
6010         mutex_unlock(&priv->mutex);
6011         return;
6012
6013  done:
6014         /* can not perform scan make sure we clear scanning
6015          * bits from status so next scan request can be performed.
6016          * if we dont clear scanning status bit here all next scan
6017          * will fail
6018         */
6019         clear_bit(STATUS_SCAN_HW, &priv->status);
6020         clear_bit(STATUS_SCANNING, &priv->status);
6021
6022         /* inform mac80211 scan aborted */
6023         queue_work(priv->workqueue, &priv->scan_completed);
6024         mutex_unlock(&priv->mutex);
6025 }
6026
6027 static void iwl3945_bg_up(struct work_struct *data)
6028 {
6029         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6030
6031         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6032                 return;
6033
6034         mutex_lock(&priv->mutex);
6035         __iwl3945_up(priv);
6036         mutex_unlock(&priv->mutex);
6037         iwl3945_rfkill_set_hw_state(priv);
6038 }
6039
6040 static void iwl3945_bg_restart(struct work_struct *data)
6041 {
6042         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6043
6044         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6045                 return;
6046
6047         iwl3945_down(priv);
6048         queue_work(priv->workqueue, &priv->up);
6049 }
6050
6051 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6052 {
6053         struct iwl_priv *priv =
6054             container_of(data, struct iwl_priv, rx_replenish);
6055
6056         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6057                 return;
6058
6059         mutex_lock(&priv->mutex);
6060         iwl3945_rx_replenish(priv);
6061         mutex_unlock(&priv->mutex);
6062 }
6063
6064 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6065
6066 static void iwl3945_post_associate(struct iwl_priv *priv)
6067 {
6068         int rc = 0;
6069         struct ieee80211_conf *conf = NULL;
6070
6071         if (priv->iw_mode == NL80211_IFTYPE_AP) {
6072                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
6073                 return;
6074         }
6075
6076
6077         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
6078                         priv->assoc_id, priv->active39_rxon.bssid_addr);
6079
6080         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6081                 return;
6082
6083         if (!priv->vif || !priv->is_open)
6084                 return;
6085
6086         iwl3945_scan_cancel_timeout(priv, 200);
6087
6088         conf = ieee80211_get_hw_conf(priv->hw);
6089
6090         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6091         iwl3945_commit_rxon(priv);
6092
6093         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6094         iwl3945_setup_rxon_timing(priv);
6095         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6096                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6097         if (rc)
6098                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
6099                             "Attempting to continue.\n");
6100
6101         priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6102
6103         priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6104
6105         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6106                         priv->assoc_id, priv->beacon_int);
6107
6108         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6109                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6110         else
6111                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6112
6113         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6114                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6115                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6116                 else
6117                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6118
6119                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6120                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6121
6122         }
6123
6124         iwl3945_commit_rxon(priv);
6125
6126         switch (priv->iw_mode) {
6127         case NL80211_IFTYPE_STATION:
6128                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6129                 break;
6130
6131         case NL80211_IFTYPE_ADHOC:
6132
6133                 priv->assoc_id = 1;
6134                 iwl3945_add_station(priv, priv->bssid, 0, 0);
6135                 iwl3945_sync_sta(priv, IWL_STA_ID,
6136                                  (priv->band == IEEE80211_BAND_5GHZ) ?
6137                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6138                                  CMD_ASYNC);
6139                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6140                 iwl3945_send_beacon_cmd(priv);
6141
6142                 break;
6143
6144         default:
6145                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
6146                            __func__, priv->iw_mode);
6147                 break;
6148         }
6149
6150         iwl3945_activate_qos(priv, 0);
6151
6152         /* we have just associated, don't start scan too early */
6153         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6154 }
6155
6156 static void iwl3945_bg_abort_scan(struct work_struct *work)
6157 {
6158         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6159
6160         if (!iwl_is_ready(priv))
6161                 return;
6162
6163         mutex_lock(&priv->mutex);
6164
6165         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6166         iwl3945_send_scan_abort(priv);
6167
6168         mutex_unlock(&priv->mutex);
6169 }
6170
6171 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
6172
6173 static void iwl3945_bg_scan_completed(struct work_struct *work)
6174 {
6175         struct iwl_priv *priv =
6176             container_of(work, struct iwl_priv, scan_completed);
6177
6178         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6179
6180         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6181                 return;
6182
6183         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6184                 iwl3945_mac_config(priv->hw, 0);
6185
6186         ieee80211_scan_completed(priv->hw);
6187
6188         /* Since setting the TXPOWER may have been deferred while
6189          * performing the scan, fire one off */
6190         mutex_lock(&priv->mutex);
6191         iwl3945_hw_reg_send_txpower(priv);
6192         mutex_unlock(&priv->mutex);
6193 }
6194
6195 /*****************************************************************************
6196  *
6197  * mac80211 entry point functions
6198  *
6199  *****************************************************************************/
6200
6201 #define UCODE_READY_TIMEOUT     (2 * HZ)
6202
6203 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6204 {
6205         struct iwl_priv *priv = hw->priv;
6206         int ret;
6207
6208         IWL_DEBUG_MAC80211("enter\n");
6209
6210         if (pci_enable_device(priv->pci_dev)) {
6211                 IWL_ERR(priv, "Fail to pci_enable_device\n");
6212                 return -ENODEV;
6213         }
6214         pci_restore_state(priv->pci_dev);
6215         pci_enable_msi(priv->pci_dev);
6216
6217         ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6218                           DRV_NAME, priv);
6219         if (ret) {
6220                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
6221                 goto out_disable_msi;
6222         }
6223
6224         /* we should be verifying the device is ready to be opened */
6225         mutex_lock(&priv->mutex);
6226
6227         memset(&priv->staging39_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6228         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6229          * ucode filename and max sizes are card-specific. */
6230
6231         if (!priv->ucode_code.len) {
6232                 ret = iwl3945_read_ucode(priv);
6233                 if (ret) {
6234                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
6235                         mutex_unlock(&priv->mutex);
6236                         goto out_release_irq;
6237                 }
6238         }
6239
6240         ret = __iwl3945_up(priv);
6241
6242         mutex_unlock(&priv->mutex);
6243
6244         iwl3945_rfkill_set_hw_state(priv);
6245
6246         if (ret)
6247                 goto out_release_irq;
6248
6249         IWL_DEBUG_INFO("Start UP work.\n");
6250
6251         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6252                 return 0;
6253
6254         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6255          * mac80211 will not be run successfully. */
6256         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6257                         test_bit(STATUS_READY, &priv->status),
6258                         UCODE_READY_TIMEOUT);
6259         if (!ret) {
6260                 if (!test_bit(STATUS_READY, &priv->status)) {
6261                         IWL_ERR(priv,
6262                                 "Wait for START_ALIVE timeout after %dms.\n",
6263                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6264                         ret = -ETIMEDOUT;
6265                         goto out_release_irq;
6266                 }
6267         }
6268
6269         priv->is_open = 1;
6270         IWL_DEBUG_MAC80211("leave\n");
6271         return 0;
6272
6273 out_release_irq:
6274         free_irq(priv->pci_dev->irq, priv);
6275 out_disable_msi:
6276         pci_disable_msi(priv->pci_dev);
6277         pci_disable_device(priv->pci_dev);
6278         priv->is_open = 0;
6279         IWL_DEBUG_MAC80211("leave - failed\n");
6280         return ret;
6281 }
6282
6283 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6284 {
6285         struct iwl_priv *priv = hw->priv;
6286
6287         IWL_DEBUG_MAC80211("enter\n");
6288
6289         if (!priv->is_open) {
6290                 IWL_DEBUG_MAC80211("leave - skip\n");
6291                 return;
6292         }
6293
6294         priv->is_open = 0;
6295
6296         if (iwl_is_ready_rf(priv)) {
6297                 /* stop mac, cancel any scan request and clear
6298                  * RXON_FILTER_ASSOC_MSK BIT
6299                  */
6300                 mutex_lock(&priv->mutex);
6301                 iwl3945_scan_cancel_timeout(priv, 100);
6302                 mutex_unlock(&priv->mutex);
6303         }
6304
6305         iwl3945_down(priv);
6306
6307         flush_workqueue(priv->workqueue);
6308         free_irq(priv->pci_dev->irq, priv);
6309         pci_disable_msi(priv->pci_dev);
6310         pci_save_state(priv->pci_dev);
6311         pci_disable_device(priv->pci_dev);
6312
6313         IWL_DEBUG_MAC80211("leave\n");
6314 }
6315
6316 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
6317 {
6318         struct iwl_priv *priv = hw->priv;
6319
6320         IWL_DEBUG_MAC80211("enter\n");
6321
6322         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6323                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
6324
6325         if (iwl3945_tx_skb(priv, skb))
6326                 dev_kfree_skb_any(skb);
6327
6328         IWL_DEBUG_MAC80211("leave\n");
6329         return NETDEV_TX_OK;
6330 }
6331
6332 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6333                                  struct ieee80211_if_init_conf *conf)
6334 {
6335         struct iwl_priv *priv = hw->priv;
6336         unsigned long flags;
6337
6338         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6339
6340         if (priv->vif) {
6341                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6342                 return -EOPNOTSUPP;
6343         }
6344
6345         spin_lock_irqsave(&priv->lock, flags);
6346         priv->vif = conf->vif;
6347         priv->iw_mode = conf->type;
6348
6349         spin_unlock_irqrestore(&priv->lock, flags);
6350
6351         mutex_lock(&priv->mutex);
6352
6353         if (conf->mac_addr) {
6354                 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
6355                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6356         }
6357
6358         if (iwl_is_ready(priv))
6359                 iwl3945_set_mode(priv, conf->type);
6360
6361         mutex_unlock(&priv->mutex);
6362
6363         IWL_DEBUG_MAC80211("leave\n");
6364         return 0;
6365 }
6366
6367 /**
6368  * iwl3945_mac_config - mac80211 config callback
6369  *
6370  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6371  * be set inappropriately and the driver currently sets the hardware up to
6372  * use it whenever needed.
6373  */
6374 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
6375 {
6376         struct iwl_priv *priv = hw->priv;
6377         const struct iwl_channel_info *ch_info;
6378         struct ieee80211_conf *conf = &hw->conf;
6379         unsigned long flags;
6380         int ret = 0;
6381
6382         mutex_lock(&priv->mutex);
6383         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6384
6385         if (!iwl_is_ready(priv)) {
6386                 IWL_DEBUG_MAC80211("leave - not ready\n");
6387                 ret = -EIO;
6388                 goto out;
6389         }
6390
6391         if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
6392                      test_bit(STATUS_SCANNING, &priv->status))) {
6393                 IWL_DEBUG_MAC80211("leave - scanning\n");
6394                 set_bit(STATUS_CONF_PENDING, &priv->status);
6395                 mutex_unlock(&priv->mutex);
6396                 return 0;
6397         }
6398
6399         spin_lock_irqsave(&priv->lock, flags);
6400
6401         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6402                                            conf->channel->hw_value);
6403         if (!is_channel_valid(ch_info)) {
6404                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6405                                conf->channel->hw_value, conf->channel->band);
6406                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6407                 spin_unlock_irqrestore(&priv->lock, flags);
6408                 ret = -EINVAL;
6409                 goto out;
6410         }
6411
6412         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6413
6414         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6415
6416         /* The list of supported rates and rate mask can be different
6417          * for each phymode; since the phymode may have changed, reset
6418          * the rate mask to what mac80211 lists */
6419         iwl3945_set_rate(priv);
6420
6421         spin_unlock_irqrestore(&priv->lock, flags);
6422
6423 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6424         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6425                 iwl3945_hw_channel_switch(priv, conf->channel);
6426                 goto out;
6427         }
6428 #endif
6429
6430         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6431
6432         if (!conf->radio_enabled) {
6433                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6434                 goto out;
6435         }
6436
6437         if (iwl_is_rfkill(priv)) {
6438                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6439                 ret = -EIO;
6440                 goto out;
6441         }
6442
6443         iwl3945_set_rate(priv);
6444
6445         if (memcmp(&priv->active39_rxon,
6446                    &priv->staging39_rxon, sizeof(priv->staging39_rxon)))
6447                 iwl3945_commit_rxon(priv);
6448         else
6449                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6450
6451         IWL_DEBUG_MAC80211("leave\n");
6452
6453 out:
6454         clear_bit(STATUS_CONF_PENDING, &priv->status);
6455         mutex_unlock(&priv->mutex);
6456         return ret;
6457 }
6458
6459 static void iwl3945_config_ap(struct iwl_priv *priv)
6460 {
6461         int rc = 0;
6462
6463         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6464                 return;
6465
6466         /* The following should be done only at AP bring up */
6467         if (!(iwl3945_is_associated(priv))) {
6468
6469                 /* RXON - unassoc (to set timing command) */
6470                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6471                 iwl3945_commit_rxon(priv);
6472
6473                 /* RXON Timing */
6474                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6475                 iwl3945_setup_rxon_timing(priv);
6476                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6477                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6478                 if (rc)
6479                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
6480                                         "Attempting to continue.\n");
6481
6482                 /* FIXME: what should be the assoc_id for AP? */
6483                 priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6484                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6485                         priv->staging39_rxon.flags |=
6486                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6487                 else
6488                         priv->staging39_rxon.flags &=
6489                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6490
6491                 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6492                         if (priv->assoc_capability &
6493                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6494                                 priv->staging39_rxon.flags |=
6495                                         RXON_FLG_SHORT_SLOT_MSK;
6496                         else
6497                                 priv->staging39_rxon.flags &=
6498                                         ~RXON_FLG_SHORT_SLOT_MSK;
6499
6500                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6501                                 priv->staging39_rxon.flags &=
6502                                         ~RXON_FLG_SHORT_SLOT_MSK;
6503                 }
6504                 /* restore RXON assoc */
6505                 priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6506                 iwl3945_commit_rxon(priv);
6507                 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
6508         }
6509         iwl3945_send_beacon_cmd(priv);
6510
6511         /* FIXME - we need to add code here to detect a totally new
6512          * configuration, reset the AP, unassoc, rxon timing, assoc,
6513          * clear sta table, add BCAST sta... */
6514 }
6515
6516 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6517                                         struct ieee80211_vif *vif,
6518                                         struct ieee80211_if_conf *conf)
6519 {
6520         struct iwl_priv *priv = hw->priv;
6521         int rc;
6522
6523         if (conf == NULL)
6524                 return -EIO;
6525
6526         if (priv->vif != vif) {
6527                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6528                 return 0;
6529         }
6530
6531         /* handle this temporarily here */
6532         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
6533             conf->changed & IEEE80211_IFCC_BEACON) {
6534                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
6535                 if (!beacon)
6536                         return -ENOMEM;
6537                 mutex_lock(&priv->mutex);
6538                 rc = iwl3945_mac_beacon_update(hw, beacon);
6539                 mutex_unlock(&priv->mutex);
6540                 if (rc)
6541                         return rc;
6542         }
6543
6544         if (!iwl_is_alive(priv))
6545                 return -EAGAIN;
6546
6547         mutex_lock(&priv->mutex);
6548
6549         if (conf->bssid)
6550                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
6551
6552 /*
6553  * very dubious code was here; the probe filtering flag is never set:
6554  *
6555         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6556             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6557  */
6558
6559         if (priv->iw_mode == NL80211_IFTYPE_AP) {
6560                 if (!conf->bssid) {
6561                         conf->bssid = priv->mac_addr;
6562                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6563                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
6564                                            conf->bssid);
6565                 }
6566                 if (priv->ibss_beacon)
6567                         dev_kfree_skb(priv->ibss_beacon);
6568
6569                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
6570         }
6571
6572         if (iwl_is_rfkill(priv))
6573                 goto done;
6574
6575         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6576             !is_multicast_ether_addr(conf->bssid)) {
6577                 /* If there is currently a HW scan going on in the background
6578                  * then we need to cancel it else the RXON below will fail. */
6579                 if (iwl3945_scan_cancel_timeout(priv, 100)) {
6580                         IWL_WARN(priv, "Aborted scan still in progress "
6581                                     "after 100ms\n");
6582                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6583                         mutex_unlock(&priv->mutex);
6584                         return -EAGAIN;
6585                 }
6586                 memcpy(priv->staging39_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6587
6588                 /* TODO: Audit driver for usage of these members and see
6589                  * if mac80211 deprecates them (priv->bssid looks like it
6590                  * shouldn't be there, but I haven't scanned the IBSS code
6591                  * to verify) - jpk */
6592                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6593
6594                 if (priv->iw_mode == NL80211_IFTYPE_AP)
6595                         iwl3945_config_ap(priv);
6596                 else {
6597                         rc = iwl3945_commit_rxon(priv);
6598                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
6599                                 iwl3945_add_station(priv,
6600                                         priv->active39_rxon.bssid_addr, 1, 0);
6601                 }
6602
6603         } else {
6604                 iwl3945_scan_cancel_timeout(priv, 100);
6605                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6606                 iwl3945_commit_rxon(priv);
6607         }
6608
6609  done:
6610         IWL_DEBUG_MAC80211("leave\n");
6611         mutex_unlock(&priv->mutex);
6612
6613         return 0;
6614 }
6615
6616 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6617                                  unsigned int changed_flags,
6618                                  unsigned int *total_flags,
6619                                  int mc_count, struct dev_addr_list *mc_list)
6620 {
6621         struct iwl_priv *priv = hw->priv;
6622         __le32 *filter_flags = &priv->staging39_rxon.filter_flags;
6623
6624         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
6625                         changed_flags, *total_flags);
6626
6627         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
6628                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
6629                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
6630                 else
6631                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
6632         }
6633         if (changed_flags & FIF_ALLMULTI) {
6634                 if (*total_flags & FIF_ALLMULTI)
6635                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
6636                 else
6637                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
6638         }
6639         if (changed_flags & FIF_CONTROL) {
6640                 if (*total_flags & FIF_CONTROL)
6641                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
6642                 else
6643                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
6644         }
6645         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
6646                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
6647                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
6648                 else
6649                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
6650         }
6651
6652         /* We avoid iwl_commit_rxon here to commit the new filter flags
6653          * since mac80211 will call ieee80211_hw_config immediately.
6654          * (mc_list is not supported at this time). Otherwise, we need to
6655          * queue a background iwl_commit_rxon work.
6656          */
6657
6658         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
6659                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6660 }
6661
6662 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
6663                                      struct ieee80211_if_init_conf *conf)
6664 {
6665         struct iwl_priv *priv = hw->priv;
6666
6667         IWL_DEBUG_MAC80211("enter\n");
6668
6669         mutex_lock(&priv->mutex);
6670
6671         if (iwl_is_ready_rf(priv)) {
6672                 iwl3945_scan_cancel_timeout(priv, 100);
6673                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6674                 iwl3945_commit_rxon(priv);
6675         }
6676         if (priv->vif == conf->vif) {
6677                 priv->vif = NULL;
6678                 memset(priv->bssid, 0, ETH_ALEN);
6679         }
6680         mutex_unlock(&priv->mutex);
6681
6682         IWL_DEBUG_MAC80211("leave\n");
6683 }
6684
6685 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6686
6687 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
6688                                      struct ieee80211_vif *vif,
6689                                      struct ieee80211_bss_conf *bss_conf,
6690                                      u32 changes)
6691 {
6692         struct iwl_priv *priv = hw->priv;
6693
6694         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6695
6696         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6697                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6698                                    bss_conf->use_short_preamble);
6699                 if (bss_conf->use_short_preamble)
6700                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6701                 else
6702                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6703         }
6704
6705         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6706                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6707                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6708                         priv->staging39_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6709                 else
6710                         priv->staging39_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6711         }
6712
6713         if (changes & BSS_CHANGED_ASSOC) {
6714                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6715                 /* This should never happen as this function should
6716                  * never be called from interrupt context. */
6717                 if (WARN_ON_ONCE(in_interrupt()))
6718                         return;
6719                 if (bss_conf->assoc) {
6720                         priv->assoc_id = bss_conf->aid;
6721                         priv->beacon_int = bss_conf->beacon_int;
6722                         priv->timestamp = bss_conf->timestamp;
6723                         priv->assoc_capability = bss_conf->assoc_capability;
6724                         priv->next_scan_jiffies = jiffies +
6725                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6726                         mutex_lock(&priv->mutex);
6727                         iwl3945_post_associate(priv);
6728                         mutex_unlock(&priv->mutex);
6729                 } else {
6730                         priv->assoc_id = 0;
6731                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6732                 }
6733         } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
6734                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6735                         iwl3945_send_rxon_assoc(priv);
6736         }
6737
6738 }
6739
6740 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6741 {
6742         int rc = 0;
6743         unsigned long flags;
6744         struct iwl_priv *priv = hw->priv;
6745         DECLARE_SSID_BUF(ssid_buf);
6746
6747         IWL_DEBUG_MAC80211("enter\n");
6748
6749         mutex_lock(&priv->mutex);
6750         spin_lock_irqsave(&priv->lock, flags);
6751
6752         if (!iwl_is_ready_rf(priv)) {
6753                 rc = -EIO;
6754                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6755                 goto out_unlock;
6756         }
6757
6758         /* we don't schedule scan within next_scan_jiffies period */
6759         if (priv->next_scan_jiffies &&
6760                         time_after(priv->next_scan_jiffies, jiffies)) {
6761                 rc = -EAGAIN;
6762                 goto out_unlock;
6763         }
6764         /* if we just finished scan ask for delay for a broadcast scan */
6765         if ((len == 0) && priv->last_scan_jiffies &&
6766             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
6767                        jiffies)) {
6768                 rc = -EAGAIN;
6769                 goto out_unlock;
6770         }
6771         if (len) {
6772                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6773                                print_ssid(ssid_buf, ssid, len), (int)len);
6774
6775                 priv->one_direct_scan = 1;
6776                 priv->direct_ssid_len = (u8)
6777                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6778                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6779         } else
6780                 priv->one_direct_scan = 0;
6781
6782         rc = iwl3945_scan_initiate(priv);
6783
6784         IWL_DEBUG_MAC80211("leave\n");
6785
6786 out_unlock:
6787         spin_unlock_irqrestore(&priv->lock, flags);
6788         mutex_unlock(&priv->mutex);
6789
6790         return rc;
6791 }
6792
6793 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6794                            const u8 *local_addr, const u8 *addr,
6795                            struct ieee80211_key_conf *key)
6796 {
6797         struct iwl_priv *priv = hw->priv;
6798         int rc = 0;
6799         u8 sta_id;
6800
6801         IWL_DEBUG_MAC80211("enter\n");
6802
6803         if (iwl3945_mod_params.sw_crypto) {
6804                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6805                 return -EOPNOTSUPP;
6806         }
6807
6808         if (is_zero_ether_addr(addr))
6809                 /* only support pairwise keys */
6810                 return -EOPNOTSUPP;
6811
6812         sta_id = iwl3945_hw_find_station(priv, addr);
6813         if (sta_id == IWL_INVALID_STATION) {
6814                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
6815                                    addr);
6816                 return -EINVAL;
6817         }
6818
6819         mutex_lock(&priv->mutex);
6820
6821         iwl3945_scan_cancel_timeout(priv, 100);
6822
6823         switch (cmd) {
6824         case  SET_KEY:
6825                 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
6826                 if (!rc) {
6827                         iwl3945_set_rxon_hwcrypto(priv, 1);
6828                         iwl3945_commit_rxon(priv);
6829                         key->hw_key_idx = sta_id;
6830                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
6831                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
6832                 }
6833                 break;
6834         case DISABLE_KEY:
6835                 rc = iwl3945_clear_sta_key_info(priv, sta_id);
6836                 if (!rc) {
6837                         iwl3945_set_rxon_hwcrypto(priv, 0);
6838                         iwl3945_commit_rxon(priv);
6839                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6840                 }
6841                 break;
6842         default:
6843                 rc = -EINVAL;
6844         }
6845
6846         IWL_DEBUG_MAC80211("leave\n");
6847         mutex_unlock(&priv->mutex);
6848
6849         return rc;
6850 }
6851
6852 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
6853                            const struct ieee80211_tx_queue_params *params)
6854 {
6855         struct iwl_priv *priv = hw->priv;
6856         unsigned long flags;
6857         int q;
6858
6859         IWL_DEBUG_MAC80211("enter\n");
6860
6861         if (!iwl_is_ready_rf(priv)) {
6862                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6863                 return -EIO;
6864         }
6865
6866         if (queue >= AC_NUM) {
6867                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
6868                 return 0;
6869         }
6870
6871         q = AC_NUM - 1 - queue;
6872
6873         spin_lock_irqsave(&priv->lock, flags);
6874
6875         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
6876         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
6877         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
6878         priv->qos_data.def_qos_parm.ac[q].edca_txop =
6879                         cpu_to_le16((params->txop * 32));
6880
6881         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
6882         priv->qos_data.qos_active = 1;
6883
6884         spin_unlock_irqrestore(&priv->lock, flags);
6885
6886         mutex_lock(&priv->mutex);
6887         if (priv->iw_mode == NL80211_IFTYPE_AP)
6888                 iwl3945_activate_qos(priv, 1);
6889         else if (priv->assoc_id && iwl3945_is_associated(priv))
6890                 iwl3945_activate_qos(priv, 0);
6891
6892         mutex_unlock(&priv->mutex);
6893
6894         IWL_DEBUG_MAC80211("leave\n");
6895         return 0;
6896 }
6897
6898 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
6899                                 struct ieee80211_tx_queue_stats *stats)
6900 {
6901         struct iwl_priv *priv = hw->priv;
6902         int i, avail;
6903         struct iwl3945_tx_queue *txq;
6904         struct iwl_queue *q;
6905         unsigned long flags;
6906
6907         IWL_DEBUG_MAC80211("enter\n");
6908
6909         if (!iwl_is_ready_rf(priv)) {
6910                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6911                 return -EIO;
6912         }
6913
6914         spin_lock_irqsave(&priv->lock, flags);
6915
6916         for (i = 0; i < AC_NUM; i++) {
6917                 txq = &priv->txq39[i];
6918                 q = &txq->q;
6919                 avail = iwl_queue_space(q);
6920
6921                 stats[i].len = q->n_window - avail;
6922                 stats[i].limit = q->n_window - q->high_mark;
6923                 stats[i].count = q->n_window;
6924
6925         }
6926         spin_unlock_irqrestore(&priv->lock, flags);
6927
6928         IWL_DEBUG_MAC80211("leave\n");
6929
6930         return 0;
6931 }
6932
6933 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
6934 {
6935         struct iwl_priv *priv = hw->priv;
6936         unsigned long flags;
6937
6938         mutex_lock(&priv->mutex);
6939         IWL_DEBUG_MAC80211("enter\n");
6940
6941         iwl_reset_qos(priv);
6942
6943         spin_lock_irqsave(&priv->lock, flags);
6944         priv->assoc_id = 0;
6945         priv->assoc_capability = 0;
6946         priv->call_post_assoc_from_beacon = 0;
6947
6948         /* new association get rid of ibss beacon skb */
6949         if (priv->ibss_beacon)
6950                 dev_kfree_skb(priv->ibss_beacon);
6951
6952         priv->ibss_beacon = NULL;
6953
6954         priv->beacon_int = priv->hw->conf.beacon_int;
6955         priv->timestamp = 0;
6956         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
6957                 priv->beacon_int = 0;
6958
6959         spin_unlock_irqrestore(&priv->lock, flags);
6960
6961         if (!iwl_is_ready_rf(priv)) {
6962                 IWL_DEBUG_MAC80211("leave - not ready\n");
6963                 mutex_unlock(&priv->mutex);
6964                 return;
6965         }
6966
6967         /* we are restarting association process
6968          * clear RXON_FILTER_ASSOC_MSK bit
6969         */
6970         if (priv->iw_mode != NL80211_IFTYPE_AP) {
6971                 iwl3945_scan_cancel_timeout(priv, 100);
6972                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6973                 iwl3945_commit_rxon(priv);
6974         }
6975
6976         /* Per mac80211.h: This is only used in IBSS mode... */
6977         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
6978
6979                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
6980                 mutex_unlock(&priv->mutex);
6981                 return;
6982         }
6983
6984         iwl3945_set_rate(priv);
6985
6986         mutex_unlock(&priv->mutex);
6987
6988         IWL_DEBUG_MAC80211("leave\n");
6989
6990 }
6991
6992 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
6993 {
6994         struct iwl_priv *priv = hw->priv;
6995         unsigned long flags;
6996
6997         IWL_DEBUG_MAC80211("enter\n");
6998
6999         if (!iwl_is_ready_rf(priv)) {
7000                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7001                 return -EIO;
7002         }
7003
7004         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7005                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7006                 return -EIO;
7007         }
7008
7009         spin_lock_irqsave(&priv->lock, flags);
7010
7011         if (priv->ibss_beacon)
7012                 dev_kfree_skb(priv->ibss_beacon);
7013
7014         priv->ibss_beacon = skb;
7015
7016         priv->assoc_id = 0;
7017
7018         IWL_DEBUG_MAC80211("leave\n");
7019         spin_unlock_irqrestore(&priv->lock, flags);
7020
7021         iwl_reset_qos(priv);
7022
7023         iwl3945_post_associate(priv);
7024
7025
7026         return 0;
7027 }
7028
7029 /*****************************************************************************
7030  *
7031  * sysfs attributes
7032  *
7033  *****************************************************************************/
7034
7035 #ifdef CONFIG_IWL3945_DEBUG
7036
7037 /*
7038  * The following adds a new attribute to the sysfs representation
7039  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7040  * used for controlling the debug level.
7041  *
7042  * See the level definitions in iwl for details.
7043  */
7044 static ssize_t show_debug_level(struct device *d,
7045                                 struct device_attribute *attr, char *buf)
7046 {
7047         struct iwl_priv *priv = d->driver_data;
7048
7049         return sprintf(buf, "0x%08X\n", priv->debug_level);
7050 }
7051 static ssize_t store_debug_level(struct device *d,
7052                                 struct device_attribute *attr,
7053                                  const char *buf, size_t count)
7054 {
7055         struct iwl_priv *priv = d->driver_data;
7056         unsigned long val;
7057         int ret;
7058
7059         ret = strict_strtoul(buf, 0, &val);
7060         if (ret)
7061                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
7062         else
7063                 priv->debug_level = val;
7064
7065         return strnlen(buf, count);
7066 }
7067
7068 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
7069                         show_debug_level, store_debug_level);
7070
7071 #endif /* CONFIG_IWL3945_DEBUG */
7072
7073 static ssize_t show_temperature(struct device *d,
7074                                 struct device_attribute *attr, char *buf)
7075 {
7076         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7077
7078         if (!iwl_is_alive(priv))
7079                 return -EAGAIN;
7080
7081         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7082 }
7083
7084 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7085
7086 static ssize_t show_tx_power(struct device *d,
7087                              struct device_attribute *attr, char *buf)
7088 {
7089         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7090         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7091 }
7092
7093 static ssize_t store_tx_power(struct device *d,
7094                               struct device_attribute *attr,
7095                               const char *buf, size_t count)
7096 {
7097         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7098         char *p = (char *)buf;
7099         u32 val;
7100
7101         val = simple_strtoul(p, &p, 10);
7102         if (p == buf)
7103                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
7104         else
7105                 iwl3945_hw_reg_set_txpower(priv, val);
7106
7107         return count;
7108 }
7109
7110 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7111
7112 static ssize_t show_flags(struct device *d,
7113                           struct device_attribute *attr, char *buf)
7114 {
7115         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7116
7117         return sprintf(buf, "0x%04X\n", priv->active39_rxon.flags);
7118 }
7119
7120 static ssize_t store_flags(struct device *d,
7121                            struct device_attribute *attr,
7122                            const char *buf, size_t count)
7123 {
7124         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7125         u32 flags = simple_strtoul(buf, NULL, 0);
7126
7127         mutex_lock(&priv->mutex);
7128         if (le32_to_cpu(priv->staging39_rxon.flags) != flags) {
7129                 /* Cancel any currently running scans... */
7130                 if (iwl3945_scan_cancel_timeout(priv, 100))
7131                         IWL_WARN(priv, "Could not cancel scan.\n");
7132                 else {
7133                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7134                                        flags);
7135                         priv->staging39_rxon.flags = cpu_to_le32(flags);
7136                         iwl3945_commit_rxon(priv);
7137                 }
7138         }
7139         mutex_unlock(&priv->mutex);
7140
7141         return count;
7142 }
7143
7144 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7145
7146 static ssize_t show_filter_flags(struct device *d,
7147                                  struct device_attribute *attr, char *buf)
7148 {
7149         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7150
7151         return sprintf(buf, "0x%04X\n",
7152                 le32_to_cpu(priv->active39_rxon.filter_flags));
7153 }
7154
7155 static ssize_t store_filter_flags(struct device *d,
7156                                   struct device_attribute *attr,
7157                                   const char *buf, size_t count)
7158 {
7159         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7160         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7161
7162         mutex_lock(&priv->mutex);
7163         if (le32_to_cpu(priv->staging39_rxon.filter_flags) != filter_flags) {
7164                 /* Cancel any currently running scans... */
7165                 if (iwl3945_scan_cancel_timeout(priv, 100))
7166                         IWL_WARN(priv, "Could not cancel scan.\n");
7167                 else {
7168                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7169                                        "0x%04X\n", filter_flags);
7170                         priv->staging39_rxon.filter_flags =
7171                                 cpu_to_le32(filter_flags);
7172                         iwl3945_commit_rxon(priv);
7173                 }
7174         }
7175         mutex_unlock(&priv->mutex);
7176
7177         return count;
7178 }
7179
7180 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7181                    store_filter_flags);
7182
7183 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7184
7185 static ssize_t show_measurement(struct device *d,
7186                                 struct device_attribute *attr, char *buf)
7187 {
7188         struct iwl_priv *priv = dev_get_drvdata(d);
7189         struct iwl_spectrum_notification measure_report;
7190         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7191         u8 *data = (u8 *)&measure_report;
7192         unsigned long flags;
7193
7194         spin_lock_irqsave(&priv->lock, flags);
7195         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7196                 spin_unlock_irqrestore(&priv->lock, flags);
7197                 return 0;
7198         }
7199         memcpy(&measure_report, &priv->measure_report, size);
7200         priv->measurement_status = 0;
7201         spin_unlock_irqrestore(&priv->lock, flags);
7202
7203         while (size && (PAGE_SIZE - len)) {
7204                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7205                                    PAGE_SIZE - len, 1);
7206                 len = strlen(buf);
7207                 if (PAGE_SIZE - len)
7208                         buf[len++] = '\n';
7209
7210                 ofs += 16;
7211                 size -= min(size, 16U);
7212         }
7213
7214         return len;
7215 }
7216
7217 static ssize_t store_measurement(struct device *d,
7218                                  struct device_attribute *attr,
7219                                  const char *buf, size_t count)
7220 {
7221         struct iwl_priv *priv = dev_get_drvdata(d);
7222         struct ieee80211_measurement_params params = {
7223                 .channel = le16_to_cpu(priv->active39_rxon.channel),
7224                 .start_time = cpu_to_le64(priv->last_tsf),
7225                 .duration = cpu_to_le16(1),
7226         };
7227         u8 type = IWL_MEASURE_BASIC;
7228         u8 buffer[32];
7229         u8 channel;
7230
7231         if (count) {
7232                 char *p = buffer;
7233                 strncpy(buffer, buf, min(sizeof(buffer), count));
7234                 channel = simple_strtoul(p, NULL, 0);
7235                 if (channel)
7236                         params.channel = channel;
7237
7238                 p = buffer;
7239                 while (*p && *p != ' ')
7240                         p++;
7241                 if (*p)
7242                         type = simple_strtoul(p + 1, NULL, 0);
7243         }
7244
7245         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7246                        "channel %d (for '%s')\n", type, params.channel, buf);
7247         iwl3945_get_measurement(priv, &params, type);
7248
7249         return count;
7250 }
7251
7252 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7253                    show_measurement, store_measurement);
7254 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7255
7256 static ssize_t store_retry_rate(struct device *d,
7257                                 struct device_attribute *attr,
7258                                 const char *buf, size_t count)
7259 {
7260         struct iwl_priv *priv = dev_get_drvdata(d);
7261
7262         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7263         if (priv->retry_rate <= 0)
7264                 priv->retry_rate = 1;
7265
7266         return count;
7267 }
7268
7269 static ssize_t show_retry_rate(struct device *d,
7270                                struct device_attribute *attr, char *buf)
7271 {
7272         struct iwl_priv *priv = dev_get_drvdata(d);
7273         return sprintf(buf, "%d", priv->retry_rate);
7274 }
7275
7276 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7277                    store_retry_rate);
7278
7279 static ssize_t store_power_level(struct device *d,
7280                                  struct device_attribute *attr,
7281                                  const char *buf, size_t count)
7282 {
7283         struct iwl_priv *priv = dev_get_drvdata(d);
7284         int rc;
7285         int mode;
7286
7287         mode = simple_strtoul(buf, NULL, 0);
7288         mutex_lock(&priv->mutex);
7289
7290         if (!iwl_is_ready(priv)) {
7291                 rc = -EAGAIN;
7292                 goto out;
7293         }
7294
7295         if ((mode < 1) || (mode > IWL39_POWER_LIMIT) ||
7296             (mode == IWL39_POWER_AC))
7297                 mode = IWL39_POWER_AC;
7298         else
7299                 mode |= IWL_POWER_ENABLED;
7300
7301         if (mode != priv->power_mode) {
7302                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7303                 if (rc) {
7304                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7305                         goto out;
7306                 }
7307                 priv->power_mode = mode;
7308         }
7309
7310         rc = count;
7311
7312  out:
7313         mutex_unlock(&priv->mutex);
7314         return rc;
7315 }
7316
7317 #define MAX_WX_STRING 80
7318
7319 /* Values are in microsecond */
7320 static const s32 timeout_duration[] = {
7321         350000,
7322         250000,
7323         75000,
7324         37000,
7325         25000,
7326 };
7327 static const s32 period_duration[] = {
7328         400000,
7329         700000,
7330         1000000,
7331         1000000,
7332         1000000
7333 };
7334
7335 static ssize_t show_power_level(struct device *d,
7336                                 struct device_attribute *attr, char *buf)
7337 {
7338         struct iwl_priv *priv = dev_get_drvdata(d);
7339         int level = IWL_POWER_LEVEL(priv->power_mode);
7340         char *p = buf;
7341
7342         p += sprintf(p, "%d ", level);
7343         switch (level) {
7344         case IWL_POWER_MODE_CAM:
7345         case IWL39_POWER_AC:
7346                 p += sprintf(p, "(AC)");
7347                 break;
7348         case IWL39_POWER_BATTERY:
7349                 p += sprintf(p, "(BATTERY)");
7350                 break;
7351         default:
7352                 p += sprintf(p,
7353                              "(Timeout %dms, Period %dms)",
7354                              timeout_duration[level - 1] / 1000,
7355                              period_duration[level - 1] / 1000);
7356         }
7357
7358         if (!(priv->power_mode & IWL_POWER_ENABLED))
7359                 p += sprintf(p, " OFF\n");
7360         else
7361                 p += sprintf(p, " \n");
7362
7363         return p - buf + 1;
7364
7365 }
7366
7367 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7368                    store_power_level);
7369
7370 static ssize_t show_channels(struct device *d,
7371                              struct device_attribute *attr, char *buf)
7372 {
7373         /* all this shit doesn't belong into sysfs anyway */
7374         return 0;
7375 }
7376
7377 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7378
7379 static ssize_t show_statistics(struct device *d,
7380                                struct device_attribute *attr, char *buf)
7381 {
7382         struct iwl_priv *priv = dev_get_drvdata(d);
7383         u32 size = sizeof(struct iwl3945_notif_statistics);
7384         u32 len = 0, ofs = 0;
7385         u8 *data = (u8 *)&priv->statistics_39;
7386         int rc = 0;
7387
7388         if (!iwl_is_alive(priv))
7389                 return -EAGAIN;
7390
7391         mutex_lock(&priv->mutex);
7392         rc = iwl3945_send_statistics_request(priv);
7393         mutex_unlock(&priv->mutex);
7394
7395         if (rc) {
7396                 len = sprintf(buf,
7397                               "Error sending statistics request: 0x%08X\n", rc);
7398                 return len;
7399         }
7400
7401         while (size && (PAGE_SIZE - len)) {
7402                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7403                                    PAGE_SIZE - len, 1);
7404                 len = strlen(buf);
7405                 if (PAGE_SIZE - len)
7406                         buf[len++] = '\n';
7407
7408                 ofs += 16;
7409                 size -= min(size, 16U);
7410         }
7411
7412         return len;
7413 }
7414
7415 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7416
7417 static ssize_t show_antenna(struct device *d,
7418                             struct device_attribute *attr, char *buf)
7419 {
7420         struct iwl_priv *priv = dev_get_drvdata(d);
7421
7422         if (!iwl_is_alive(priv))
7423                 return -EAGAIN;
7424
7425         return sprintf(buf, "%d\n", priv->antenna);
7426 }
7427
7428 static ssize_t store_antenna(struct device *d,
7429                              struct device_attribute *attr,
7430                              const char *buf, size_t count)
7431 {
7432         int ant;
7433         struct iwl_priv *priv = dev_get_drvdata(d);
7434
7435         if (count == 0)
7436                 return 0;
7437
7438         if (sscanf(buf, "%1i", &ant) != 1) {
7439                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7440                 return count;
7441         }
7442
7443         if ((ant >= 0) && (ant <= 2)) {
7444                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7445                 priv->antenna = (enum iwl3945_antenna)ant;
7446         } else
7447                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7448
7449
7450         return count;
7451 }
7452
7453 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7454
7455 static ssize_t show_status(struct device *d,
7456                            struct device_attribute *attr, char *buf)
7457 {
7458         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7459         if (!iwl_is_alive(priv))
7460                 return -EAGAIN;
7461         return sprintf(buf, "0x%08x\n", (int)priv->status);
7462 }
7463
7464 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7465
7466 static ssize_t dump_error_log(struct device *d,
7467                               struct device_attribute *attr,
7468                               const char *buf, size_t count)
7469 {
7470         char *p = (char *)buf;
7471
7472         if (p[0] == '1')
7473                 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7474
7475         return strnlen(buf, count);
7476 }
7477
7478 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7479
7480 static ssize_t dump_event_log(struct device *d,
7481                               struct device_attribute *attr,
7482                               const char *buf, size_t count)
7483 {
7484         char *p = (char *)buf;
7485
7486         if (p[0] == '1')
7487                 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7488
7489         return strnlen(buf, count);
7490 }
7491
7492 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7493
7494 /*****************************************************************************
7495  *
7496  * driver setup and tear down
7497  *
7498  *****************************************************************************/
7499
7500 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
7501 {
7502         priv->workqueue = create_workqueue(DRV_NAME);
7503
7504         init_waitqueue_head(&priv->wait_command_queue);
7505
7506         INIT_WORK(&priv->up, iwl3945_bg_up);
7507         INIT_WORK(&priv->restart, iwl3945_bg_restart);
7508         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7509         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7510         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7511         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7512         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7513         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7514         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7515         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7516         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7517
7518         iwl3945_hw_setup_deferred_work(priv);
7519
7520         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7521                      iwl3945_irq_tasklet, (unsigned long)priv);
7522 }
7523
7524 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
7525 {
7526         iwl3945_hw_cancel_deferred_work(priv);
7527
7528         cancel_delayed_work_sync(&priv->init_alive_start);
7529         cancel_delayed_work(&priv->scan_check);
7530         cancel_delayed_work(&priv->alive_start);
7531         cancel_work_sync(&priv->beacon_update);
7532 }
7533
7534 static struct attribute *iwl3945_sysfs_entries[] = {
7535         &dev_attr_antenna.attr,
7536         &dev_attr_channels.attr,
7537         &dev_attr_dump_errors.attr,
7538         &dev_attr_dump_events.attr,
7539         &dev_attr_flags.attr,
7540         &dev_attr_filter_flags.attr,
7541 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7542         &dev_attr_measurement.attr,
7543 #endif
7544         &dev_attr_power_level.attr,
7545         &dev_attr_retry_rate.attr,
7546         &dev_attr_statistics.attr,
7547         &dev_attr_status.attr,
7548         &dev_attr_temperature.attr,
7549         &dev_attr_tx_power.attr,
7550 #ifdef CONFIG_IWL3945_DEBUG
7551         &dev_attr_debug_level.attr,
7552 #endif
7553         NULL
7554 };
7555
7556 static struct attribute_group iwl3945_attribute_group = {
7557         .name = NULL,           /* put in device directory */
7558         .attrs = iwl3945_sysfs_entries,
7559 };
7560
7561 static struct ieee80211_ops iwl3945_hw_ops = {
7562         .tx = iwl3945_mac_tx,
7563         .start = iwl3945_mac_start,
7564         .stop = iwl3945_mac_stop,
7565         .add_interface = iwl3945_mac_add_interface,
7566         .remove_interface = iwl3945_mac_remove_interface,
7567         .config = iwl3945_mac_config,
7568         .config_interface = iwl3945_mac_config_interface,
7569         .configure_filter = iwl3945_configure_filter,
7570         .set_key = iwl3945_mac_set_key,
7571         .get_tx_stats = iwl3945_mac_get_tx_stats,
7572         .conf_tx = iwl3945_mac_conf_tx,
7573         .reset_tsf = iwl3945_mac_reset_tsf,
7574         .bss_info_changed = iwl3945_bss_info_changed,
7575         .hw_scan = iwl3945_mac_hw_scan
7576 };
7577
7578 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7579 {
7580         int err = 0;
7581         struct iwl_priv *priv;
7582         struct ieee80211_hw *hw;
7583         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7584         unsigned long flags;
7585
7586         /***********************
7587          * 1. Allocating HW data
7588          * ********************/
7589
7590         /* mac80211 allocates memory for this device instance, including
7591          *   space for this driver's private structure */
7592         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl3945_hw_ops);
7593         if (hw == NULL) {
7594                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
7595                 err = -ENOMEM;
7596                 goto out;
7597         }
7598
7599         SET_IEEE80211_DEV(hw, &pdev->dev);
7600
7601         priv = hw->priv;
7602         priv->hw = hw;
7603         priv->pci_dev = pdev;
7604         priv->cfg = cfg;
7605
7606         if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
7607              (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
7608                 IWL_ERR(priv,
7609                         "invalid queues_num, should be between %d and %d\n",
7610                         IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7611                 err = -EINVAL;
7612                 goto out;
7613         }
7614
7615         /* Disabling hardware scan means that mac80211 will perform scans
7616          * "the hard way", rather than using device's scan. */
7617         if (iwl3945_mod_params.disable_hw_scan) {
7618                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7619                 iwl3945_hw_ops.hw_scan = NULL;
7620         }
7621
7622         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7623         hw->rate_control_algorithm = "iwl-3945-rs";
7624         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7625
7626         /* Select antenna (may be helpful if only one antenna is connected) */
7627         priv->antenna = (enum iwl3945_antenna)iwl3945_mod_params.antenna;
7628 #ifdef CONFIG_IWL3945_DEBUG
7629         priv->debug_level = iwl3945_mod_params.debug;
7630         atomic_set(&priv->restrict_refcnt, 0);
7631 #endif
7632
7633         /* Tell mac80211 our characteristics */
7634         hw->flags = IEEE80211_HW_SIGNAL_DBM |
7635                     IEEE80211_HW_NOISE_DBM;
7636
7637         hw->wiphy->interface_modes =
7638                 BIT(NL80211_IFTYPE_STATION) |
7639                 BIT(NL80211_IFTYPE_ADHOC);
7640
7641         hw->wiphy->fw_handles_regulatory = true;
7642
7643         /* 4 EDCA QOS priorities */
7644         hw->queues = 4;
7645
7646         /***************************
7647          * 2. Initializing PCI bus
7648          * *************************/
7649         if (pci_enable_device(pdev)) {
7650                 err = -ENODEV;
7651                 goto out_ieee80211_free_hw;
7652         }
7653
7654         pci_set_master(pdev);
7655
7656         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7657         if (!err)
7658                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7659         if (err) {
7660                 IWL_WARN(priv, "No suitable DMA available.\n");
7661                 goto out_pci_disable_device;
7662         }
7663
7664         pci_set_drvdata(pdev, priv);
7665         err = pci_request_regions(pdev, DRV_NAME);
7666         if (err)
7667                 goto out_pci_disable_device;
7668
7669         /***********************
7670          * 3. Read REV Register
7671          * ********************/
7672         priv->hw_base = pci_iomap(pdev, 0, 0);
7673         if (!priv->hw_base) {
7674                 err = -ENODEV;
7675                 goto out_pci_release_regions;
7676         }
7677
7678         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7679                         (unsigned long long) pci_resource_len(pdev, 0));
7680         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7681
7682         /* We disable the RETRY_TIMEOUT register (0x41) to keep
7683          * PCI Tx retries from interfering with C3 CPU state */
7684         pci_write_config_byte(pdev, 0x41, 0x00);
7685
7686         /* nic init */
7687         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7688                         CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7689
7690         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7691         err = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
7692                                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7693         if (err < 0) {
7694                 IWL_DEBUG_INFO("Failed to init the card\n");
7695                 goto out_remove_sysfs;
7696         }
7697
7698         /***********************
7699          * 4. Read EEPROM
7700          * ********************/
7701         /* Read the EEPROM */
7702         err = iwl3945_eeprom_init(priv);
7703         if (err) {
7704                 IWL_ERR(priv, "Unable to init EEPROM\n");
7705                 goto out_remove_sysfs;
7706         }
7707         /* MAC Address location in EEPROM same for 3945/4965 */
7708         get_eeprom_mac(priv, priv->mac_addr);
7709         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
7710         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7711
7712         /***********************
7713          * 5. Setup HW Constants
7714          * ********************/
7715         /* Device-specific setup */
7716         if (iwl3945_hw_set_hw_params(priv)) {
7717                 IWL_ERR(priv, "failed to set hw settings\n");
7718                 goto out_iounmap;
7719         }
7720
7721         /***********************
7722          * 6. Setup priv
7723          * ********************/
7724         priv->retry_rate = 1;
7725         priv->ibss_beacon = NULL;
7726
7727         spin_lock_init(&priv->lock);
7728         spin_lock_init(&priv->power_data_39.lock);
7729         spin_lock_init(&priv->sta_lock);
7730         spin_lock_init(&priv->hcmd_lock);
7731
7732         INIT_LIST_HEAD(&priv->free_frames);
7733         mutex_init(&priv->mutex);
7734
7735         /* Clear the driver's (not device's) station table */
7736         iwl3945_clear_stations_table(priv);
7737
7738         priv->data_retry_limit = -1;
7739         priv->ieee_channels = NULL;
7740         priv->ieee_rates = NULL;
7741         priv->band = IEEE80211_BAND_2GHZ;
7742
7743         priv->iw_mode = NL80211_IFTYPE_STATION;
7744
7745         iwl_reset_qos(priv);
7746
7747         priv->qos_data.qos_active = 0;
7748         priv->qos_data.qos_cap.val = 0;
7749
7750
7751         priv->rates_mask = IWL_RATES_MASK;
7752         /* If power management is turned on, default to AC mode */
7753         priv->power_mode = IWL39_POWER_AC;
7754         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
7755
7756         err = iwl3945_init_channel_map(priv);
7757         if (err) {
7758                 IWL_ERR(priv, "initializing regulatory failed: %d\n", err);
7759                 goto out_release_irq;
7760         }
7761
7762         err = iwl3945_init_geos(priv);
7763         if (err) {
7764                 IWL_ERR(priv, "initializing geos failed: %d\n", err);
7765                 goto out_free_channel_map;
7766         }
7767
7768         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
7769                 priv->cfg->name);
7770
7771         /***********************************
7772          * 7. Initialize Module Parameters
7773          * **********************************/
7774
7775         /* Initialize module parameter values here */
7776         /* Disable radio (SW RF KILL) via parameter when loading driver */
7777         if (iwl3945_mod_params.disable) {
7778                 set_bit(STATUS_RF_KILL_SW, &priv->status);
7779                 IWL_DEBUG_INFO("Radio disabled.\n");
7780         }
7781
7782
7783         /***********************
7784          * 8. Setup Services
7785          * ********************/
7786
7787         spin_lock_irqsave(&priv->lock, flags);
7788         iwl3945_disable_interrupts(priv);
7789         spin_unlock_irqrestore(&priv->lock, flags);
7790
7791         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7792         if (err) {
7793                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
7794                 goto out_free_geos;
7795         }
7796
7797         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
7798         iwl3945_setup_deferred_work(priv);
7799         iwl3945_setup_rx_handlers(priv);
7800
7801         /***********************
7802          * 9. Conclude
7803          * ********************/
7804         pci_save_state(pdev);
7805         pci_disable_device(pdev);
7806
7807         /*********************************
7808          * 10. Setup and Register mac80211
7809          * *******************************/
7810
7811         err = ieee80211_register_hw(priv->hw);
7812         if (err) {
7813                 IWL_ERR(priv, "Failed to register network device: %d\n", err);
7814                 goto  out_remove_sysfs;
7815         }
7816
7817         priv->hw->conf.beacon_int = 100;
7818         priv->mac80211_registered = 1;
7819
7820
7821         err = iwl3945_rfkill_init(priv);
7822         if (err)
7823                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
7824                                   "Ignoring error: %d\n", err);
7825
7826         return 0;
7827
7828  out_remove_sysfs:
7829         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7830  out_free_geos:
7831         iwl3945_free_geos(priv);
7832  out_free_channel_map:
7833         iwl3945_free_channel_map(priv);
7834
7835
7836  out_release_irq:
7837         destroy_workqueue(priv->workqueue);
7838         priv->workqueue = NULL;
7839         iwl3945_unset_hw_params(priv);
7840
7841  out_iounmap:
7842         pci_iounmap(pdev, priv->hw_base);
7843  out_pci_release_regions:
7844         pci_release_regions(pdev);
7845  out_pci_disable_device:
7846         pci_disable_device(pdev);
7847         pci_set_drvdata(pdev, NULL);
7848  out_ieee80211_free_hw:
7849         ieee80211_free_hw(priv->hw);
7850  out:
7851         return err;
7852 }
7853
7854 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
7855 {
7856         struct iwl_priv *priv = pci_get_drvdata(pdev);
7857         unsigned long flags;
7858
7859         if (!priv)
7860                 return;
7861
7862         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7863
7864         set_bit(STATUS_EXIT_PENDING, &priv->status);
7865
7866         iwl3945_down(priv);
7867
7868         /* make sure we flush any pending irq or
7869          * tasklet for the driver
7870          */
7871         spin_lock_irqsave(&priv->lock, flags);
7872         iwl3945_disable_interrupts(priv);
7873         spin_unlock_irqrestore(&priv->lock, flags);
7874
7875         iwl_synchronize_irq(priv);
7876
7877         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7878
7879         iwl3945_rfkill_unregister(priv);
7880         iwl3945_dealloc_ucode_pci(priv);
7881
7882         if (priv->rxq.bd)
7883                 iwl3945_rx_queue_free(priv, &priv->rxq);
7884         iwl3945_hw_txq_ctx_free(priv);
7885
7886         iwl3945_unset_hw_params(priv);
7887         iwl3945_clear_stations_table(priv);
7888
7889         if (priv->mac80211_registered)
7890                 ieee80211_unregister_hw(priv->hw);
7891
7892         /*netif_stop_queue(dev); */
7893         flush_workqueue(priv->workqueue);
7894
7895         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
7896          * priv->workqueue... so we can't take down the workqueue
7897          * until now... */
7898         destroy_workqueue(priv->workqueue);
7899         priv->workqueue = NULL;
7900
7901         pci_iounmap(pdev, priv->hw_base);
7902         pci_release_regions(pdev);
7903         pci_disable_device(pdev);
7904         pci_set_drvdata(pdev, NULL);
7905
7906         iwl3945_free_channel_map(priv);
7907         iwl3945_free_geos(priv);
7908         kfree(priv->scan39);
7909         if (priv->ibss_beacon)
7910                 dev_kfree_skb(priv->ibss_beacon);
7911
7912         ieee80211_free_hw(priv->hw);
7913 }
7914
7915 #ifdef CONFIG_PM
7916
7917 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
7918 {
7919         struct iwl_priv *priv = pci_get_drvdata(pdev);
7920
7921         if (priv->is_open) {
7922                 set_bit(STATUS_IN_SUSPEND, &priv->status);
7923                 iwl3945_mac_stop(priv->hw);
7924                 priv->is_open = 1;
7925         }
7926
7927         pci_set_power_state(pdev, PCI_D3hot);
7928
7929         return 0;
7930 }
7931
7932 static int iwl3945_pci_resume(struct pci_dev *pdev)
7933 {
7934         struct iwl_priv *priv = pci_get_drvdata(pdev);
7935
7936         pci_set_power_state(pdev, PCI_D0);
7937
7938         if (priv->is_open)
7939                 iwl3945_mac_start(priv->hw);
7940
7941         clear_bit(STATUS_IN_SUSPEND, &priv->status);
7942         return 0;
7943 }
7944
7945 #endif /* CONFIG_PM */
7946
7947 /*************** RFKILL FUNCTIONS **********/
7948 #ifdef CONFIG_IWL3945_RFKILL
7949 /* software rf-kill from user */
7950 static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
7951 {
7952         struct iwl_priv *priv = data;
7953         int err = 0;
7954
7955         if (!priv->rfkill)
7956         return 0;
7957
7958         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7959                 return 0;
7960
7961         IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
7962         mutex_lock(&priv->mutex);
7963
7964         switch (state) {
7965         case RFKILL_STATE_UNBLOCKED:
7966                 if (iwl_is_rfkill_hw(priv)) {
7967                         err = -EBUSY;
7968                         goto out_unlock;
7969                 }
7970                 iwl3945_radio_kill_sw(priv, 0);
7971                 break;
7972         case RFKILL_STATE_SOFT_BLOCKED:
7973                 iwl3945_radio_kill_sw(priv, 1);
7974                 break;
7975         default:
7976                 IWL_WARN(priv, "received unexpected RFKILL state %d\n", state);
7977                 break;
7978         }
7979 out_unlock:
7980         mutex_unlock(&priv->mutex);
7981
7982         return err;
7983 }
7984
7985 int iwl3945_rfkill_init(struct iwl_priv *priv)
7986 {
7987         struct device *device = wiphy_dev(priv->hw->wiphy);
7988         int ret = 0;
7989
7990         BUG_ON(device == NULL);
7991
7992         IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
7993         priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
7994         if (!priv->rfkill) {
7995                 IWL_ERR(priv, "Unable to allocate rfkill device.\n");
7996                 ret = -ENOMEM;
7997                 goto error;
7998         }
7999
8000         priv->rfkill->name = priv->cfg->name;
8001         priv->rfkill->data = priv;
8002         priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
8003         priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
8004         priv->rfkill->user_claim_unsupported = 1;
8005
8006         priv->rfkill->dev.class->suspend = NULL;
8007         priv->rfkill->dev.class->resume = NULL;
8008
8009         ret = rfkill_register(priv->rfkill);
8010         if (ret) {
8011                 IWL_ERR(priv, "Unable to register rfkill: %d\n", ret);
8012                 goto freed_rfkill;
8013         }
8014
8015         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8016         return ret;
8017
8018 freed_rfkill:
8019         if (priv->rfkill != NULL)
8020                 rfkill_free(priv->rfkill);
8021         priv->rfkill = NULL;
8022
8023 error:
8024         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8025         return ret;
8026 }
8027
8028 void iwl3945_rfkill_unregister(struct iwl_priv *priv)
8029 {
8030         if (priv->rfkill)
8031                 rfkill_unregister(priv->rfkill);
8032
8033         priv->rfkill = NULL;
8034 }
8035
8036 /* set rf-kill to the right state. */
8037 void iwl3945_rfkill_set_hw_state(struct iwl_priv *priv)
8038 {
8039
8040         if (!priv->rfkill)
8041                 return;
8042
8043         if (iwl_is_rfkill_hw(priv)) {
8044                 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
8045                 return;
8046         }
8047
8048         if (!iwl_is_rfkill_sw(priv))
8049                 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
8050         else
8051                 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
8052 }
8053 #endif
8054
8055 /*****************************************************************************
8056  *
8057  * driver and module entry point
8058  *
8059  *****************************************************************************/
8060
8061 static struct pci_driver iwl3945_driver = {
8062         .name = DRV_NAME,
8063         .id_table = iwl3945_hw_card_ids,
8064         .probe = iwl3945_pci_probe,
8065         .remove = __devexit_p(iwl3945_pci_remove),
8066 #ifdef CONFIG_PM
8067         .suspend = iwl3945_pci_suspend,
8068         .resume = iwl3945_pci_resume,
8069 #endif
8070 };
8071
8072 static int __init iwl3945_init(void)
8073 {
8074
8075         int ret;
8076         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8077         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8078
8079         ret = iwl3945_rate_control_register();
8080         if (ret) {
8081                 printk(KERN_ERR DRV_NAME
8082                        "Unable to register rate control algorithm: %d\n", ret);
8083                 return ret;
8084         }
8085
8086         ret = pci_register_driver(&iwl3945_driver);
8087         if (ret) {
8088                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
8089                 goto error_register;
8090         }
8091
8092         return ret;
8093
8094 error_register:
8095         iwl3945_rate_control_unregister();
8096         return ret;
8097 }
8098
8099 static void __exit iwl3945_exit(void)
8100 {
8101         pci_unregister_driver(&iwl3945_driver);
8102         iwl3945_rate_control_unregister();
8103 }
8104
8105 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
8106
8107 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
8108 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8109 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
8110 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8111 module_param_named(hwcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
8112 MODULE_PARM_DESC(hwcrypto,
8113                  "using hardware crypto engine (default 0 [software])\n");
8114 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
8115 MODULE_PARM_DESC(debug, "debug output mask");
8116 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
8117 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8118
8119 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
8120 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8121
8122 module_exit(iwl3945_exit);
8123 module_init(iwl3945_init);