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  *
  63  * module boiler plate
  64  *
  65  ******************************************************************************/
  66
  67 /* module parameters */
  68 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
  69 static u32 iwl3945_param_debug;    /* def: 0 = minimal debug log messages */
  70 static int iwl3945_param_disable;  /* def: 0 = enable radio */
  71 static int iwl3945_param_antenna;  /* def: 0 = both antennas (use diversity) */
  72 int iwl3945_param_hwcrypto;        /* def: 0 = use software encryption */
  73 int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
  74
  75 /*
  76  * module name, copyright, version, etc.
  77  */
  78
  79 #define DRV_DESCRIPTION \
  80 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
  81
  82 #ifdef CONFIG_IWL3945_DEBUG
  83 #define VD "d"
  84 #else
  85 #define VD
  86 #endif
  87
  88 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
  89 #define VS "s"
  90 #else
  91 #define VS
  92 #endif
  93
  94 #define IWL39_VERSION "1.2.26k" VD VS
  95 #define DRV_COPYRIGHT   "Copyright(c) 2003-2008 Intel Corporation"
  96 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  97 #define DRV_VERSION     IWL39_VERSION
  98
  99
 100 MODULE_DESCRIPTION(DRV_DESCRIPTION);
 101 MODULE_VERSION(DRV_VERSION);
 102 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
 103 MODULE_LICENSE("GPL");
 104
 105 static const struct ieee80211_supported_band *iwl3945_get_band(
 106                 struct iwl_priv *priv, enum ieee80211_band band)
 107 {
 108         return priv->hw->wiphy->bands[band];
 109 }
 110
 111 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 112  * DMA services
 113  *
 114  * Theory of operation
 115  *
 116  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 117  * of buffer descriptors, each of which points to one or more data buffers for
 118  * the device to read from or fill.  Driver and device exchange status of each
 119  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 120  * entries in each circular buffer, to protect against confusing empty and full
 121  * queue states.
 122  *
 123  * The device reads or writes the data in the queues via the device's several
 124  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 125  *
 126  * For Tx queue, there are low mark and high mark limits. If, after queuing
 127  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 128  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 129  * Tx queue resumed.
 130  *
 131  * The 3945 operates with six queues:  One receive queue, one transmit queue
 132  * (#4) for sending commands to the device firmware, and four transmit queues
 133  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
 134  ***************************************************/
 135
 136 int iwl3945_x2_queue_used(const struct iwl_queue *q, int i)
 137 {
 138         return q->write_ptr > q->read_ptr ?
 139                 (i >= q->read_ptr && i < q->write_ptr) :
 140                 !(i < q->read_ptr && i >= q->write_ptr);
 141 }
 142
 143 /**
 144  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 145  */
 146 static int iwl3945_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
 147                           int count, int slots_num, u32 id)
 148 {
 149         q->n_bd = count;
 150         q->n_window = slots_num;
 151         q->id = id;
 152
 153         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 154          * and iwl_queue_dec_wrap are broken. */
 155         BUG_ON(!is_power_of_2(count));
 156
 157         /* slots_num must be power-of-two size, otherwise
 158          * get_cmd_index is broken. */
 159         BUG_ON(!is_power_of_2(slots_num));
 160
 161         q->low_mark = q->n_window / 4;
 162         if (q->low_mark < 4)
 163                 q->low_mark = 4;
 164
 165         q->high_mark = q->n_window / 8;
 166         if (q->high_mark < 2)
 167                 q->high_mark = 2;
 168
 169         q->write_ptr = q->read_ptr = 0;
 170
 171         return 0;
 172 }
 173
 174 /**
 175  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 176  */
 177 static int iwl3945_tx_queue_alloc(struct iwl_priv *priv,
 178                               struct iwl3945_tx_queue *txq, u32 id)
 179 {
 180         struct pci_dev *dev = priv->pci_dev;
 181
 182         /* Driver private data, only for Tx (not command) queues,
 183          * not shared with device. */
 184         if (id != IWL_CMD_QUEUE_NUM) {
 185                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 186                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 187                 if (!txq->txb) {
 188                         IWL_ERROR("kmalloc for auxiliary BD "
 189                                   "structures failed\n");
 190                         goto error;
 191                 }
 192         } else
 193                 txq->txb = NULL;
 194
 195         /* Circular buffer of transmit frame descriptors (TFDs),
 196          * shared with device */
 197         txq->bd = pci_alloc_consistent(dev,
 198                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 199                         &txq->q.dma_addr);
 200
 201         if (!txq->bd) {
 202                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 203                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 204                 goto error;
 205         }
 206         txq->q.id = id;
 207
 208         return 0;
 209
 210  error:
 211         kfree(txq->txb);
 212         txq->txb = NULL;
 213
 214         return -ENOMEM;
 215 }
 216
 217 /**
 218  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 219  */
 220 int iwl3945_tx_queue_init(struct iwl_priv *priv,
 221                       struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
 222 {
 223         struct pci_dev *dev = priv->pci_dev;
 224         int len;
 225         int rc = 0;
 226
 227         /*
 228          * Alloc buffer array for commands (Tx or other types of commands).
 229          * For the command queue (#4), allocate command space + one big
 230          * command for scan, since scan command is very huge; the system will
 231          * not have two scans at the same time, so only one is needed.
 232          * For data Tx queues (all other queues), no super-size command
 233          * space is needed.
 234          */
 235         len = sizeof(struct iwl3945_cmd) * slots_num;
 236         if (txq_id == IWL_CMD_QUEUE_NUM)
 237                 len +=  IWL_MAX_SCAN_SIZE;
 238         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 239         if (!txq->cmd)
 240                 return -ENOMEM;
 241
 242         /* Alloc driver data array and TFD circular buffer */
 243         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
 244         if (rc) {
 245                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 246
 247                 return -ENOMEM;
 248         }
 249         txq->need_update = 0;
 250
 251         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 252          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 253         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 254
 255         /* Initialize queue high/low-water, head/tail indexes */
 256         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 257
 258         /* Tell device where to find queue, enable DMA channel. */
 259         iwl3945_hw_tx_queue_init(priv, txq);
 260
 261         return 0;
 262 }
 263
 264 /**
 265  * iwl3945_tx_queue_free - Deallocate DMA queue.
 266  * @txq: Transmit queue to deallocate.
 267  *
 268  * Empty queue by removing and destroying all BD's.
 269  * Free all buffers.
 270  * 0-fill, but do not free "txq" descriptor structure.
 271  */
 272 void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl3945_tx_queue *txq)
 273 {
 274         struct iwl_queue *q = &txq->q;
 275         struct pci_dev *dev = priv->pci_dev;
 276         int len;
 277
 278         if (q->n_bd == 0)
 279                 return;
 280
 281         /* first, empty all BD's */
 282         for (; q->write_ptr != q->read_ptr;
 283              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 284                 iwl3945_hw_txq_free_tfd(priv, txq);
 285
 286         len = sizeof(struct iwl3945_cmd) * q->n_window;
 287         if (q->id == IWL_CMD_QUEUE_NUM)
 288                 len += IWL_MAX_SCAN_SIZE;
 289
 290         /* De-alloc array of command/tx buffers */
 291         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 292
 293         /* De-alloc circular buffer of TFDs */
 294         if (txq->q.n_bd)
 295                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
 296                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 297
 298         /* De-alloc array of per-TFD driver data */
 299         kfree(txq->txb);
 300         txq->txb = NULL;
 301
 302         /* 0-fill queue descriptor structure */
 303         memset(txq, 0, sizeof(*txq));
 304 }
 305
 306 /*************** STATION TABLE MANAGEMENT ****
 307  * mac80211 should be examined to determine if sta_info is duplicating
 308  * the functionality provided here
 309  */
 310
 311 /**************************************************************/
 312 #if 0 /* temporary disable till we add real remove station */
 313 /**
 314  * iwl3945_remove_station - Remove driver's knowledge of station.
 315  *
 316  * NOTE:  This does not remove station from device's station table.
 317  */
 318 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 319 {
 320         int index = IWL_INVALID_STATION;
 321         int i;
 322         unsigned long flags;
 323
 324         spin_lock_irqsave(&priv->sta_lock, flags);
 325
 326         if (is_ap)
 327                 index = IWL_AP_ID;
 328         else if (is_broadcast_ether_addr(addr))
 329                 index = priv->hw_params.bcast_sta_id;
 330         else
 331                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
 332                         if (priv->stations_39[i].used &&
 333                             !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 334                                                 addr)) {
 335                                 index = i;
 336                                 break;
 337                         }
 338
 339         if (unlikely(index == IWL_INVALID_STATION))
 340                 goto out;
 341
 342         if (priv->stations_39[index].used) {
 343                 priv->stations_39[index].used = 0;
 344                 priv->num_stations--;
 345         }
 346
 347         BUG_ON(priv->num_stations < 0);
 348
 349 out:
 350         spin_unlock_irqrestore(&priv->sta_lock, flags);
 351         return 0;
 352 }
 353 #endif
 354
 355 /**
 356  * iwl3945_clear_stations_table - Clear the driver's station table
 357  *
 358  * NOTE:  This does not clear or otherwise alter the device's station table.
 359  */
 360 static void iwl3945_clear_stations_table(struct iwl_priv *priv)
 361 {
 362         unsigned long flags;
 363
 364         spin_lock_irqsave(&priv->sta_lock, flags);
 365
 366         priv->num_stations = 0;
 367         memset(priv->stations_39, 0, sizeof(priv->stations_39));
 368
 369         spin_unlock_irqrestore(&priv->sta_lock, flags);
 370 }
 371
 372 /**
 373  * iwl3945_add_station - Add station to station tables in driver and device
 374  */
 375 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
 376 {
 377         int i;
 378         int index = IWL_INVALID_STATION;
 379         struct iwl3945_station_entry *station;
 380         unsigned long flags_spin;
 381         u8 rate;
 382
 383         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 384         if (is_ap)
 385                 index = IWL_AP_ID;
 386         else if (is_broadcast_ether_addr(addr))
 387                 index = priv->hw_params.bcast_sta_id;
 388         else
 389                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
 390                         if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
 391                                                 addr)) {
 392                                 index = i;
 393                                 break;
 394                         }
 395
 396                         if (!priv->stations_39[i].used &&
 397                             index == IWL_INVALID_STATION)
 398                                 index = i;
 399                 }
 400
 401         /* These two conditions has the same outcome but keep them separate
 402           since they have different meaning */
 403         if (unlikely(index == IWL_INVALID_STATION)) {
 404                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 405                 return index;
 406         }
 407
 408         if (priv->stations_39[index].used &&
 409            !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
 410                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 411                 return index;
 412         }
 413
 414         IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
 415         station = &priv->stations_39[index];
 416         station->used = 1;
 417         priv->num_stations++;
 418
 419         /* Set up the REPLY_ADD_STA command to send to device */
 420         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
 421         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 422         station->sta.mode = 0;
 423         station->sta.sta.sta_id = index;
 424         station->sta.station_flags = 0;
 425
 426         if (priv->band == IEEE80211_BAND_5GHZ)
 427                 rate = IWL_RATE_6M_PLCP;
 428         else
 429                 rate =  IWL_RATE_1M_PLCP;
 430
 431         /* Turn on both antennas for the station... */
 432         station->sta.rate_n_flags =
 433                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
 434
 435         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 436
 437         /* Add station to device's station table */
 438         iwl3945_send_add_station(priv, &station->sta, flags);
 439         return index;
 440
 441 }
 442
 443 /*************** DRIVER STATUS FUNCTIONS   *****/
 444
 445 static inline int iwl3945_is_ready(struct iwl_priv *priv)
 446 {
 447         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 448          * set but EXIT_PENDING is not */
 449         return test_bit(STATUS_READY, &priv->status) &&
 450                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 451                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 452 }
 453
 454 static inline int iwl3945_is_alive(struct iwl_priv *priv)
 455 {
 456         return test_bit(STATUS_ALIVE, &priv->status);
 457 }
 458
 459 static inline int iwl3945_is_init(struct iwl_priv *priv)
 460 {
 461         return test_bit(STATUS_INIT, &priv->status);
 462 }
 463
 464 static inline int iwl3945_is_rfkill_sw(struct iwl_priv *priv)
 465 {
 466         return test_bit(STATUS_RF_KILL_SW, &priv->status);
 467 }
 468
 469 static inline int iwl3945_is_rfkill_hw(struct iwl_priv *priv)
 470 {
 471         return test_bit(STATUS_RF_KILL_HW, &priv->status);
 472 }
 473
 474 static inline int iwl3945_is_rfkill(struct iwl_priv *priv)
 475 {
 476         return iwl3945_is_rfkill_hw(priv) ||
 477                 iwl3945_is_rfkill_sw(priv);
 478 }
 479
 480 static inline int iwl3945_is_ready_rf(struct iwl_priv *priv)
 481 {
 482
 483         if (iwl3945_is_rfkill(priv))
 484                 return 0;
 485
 486         return iwl3945_is_ready(priv);
 487 }
 488
 489 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 490
 491 #define IWL_CMD(x) case x: return #x
 492 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
 493
 494 /**
 495  * iwl3945_enqueue_hcmd - enqueue a uCode command
 496  * @priv: device private data point
 497  * @cmd: a point to the ucode command structure
 498  *
 499  * The function returns < 0 values to indicate the operation is
 500  * failed. On success, it turns the index (> 0) of command in the
 501  * command queue.
 502  */
 503 static int iwl3945_enqueue_hcmd(struct iwl_priv *priv, struct iwl3945_host_cmd *cmd)
 504 {
 505         struct iwl3945_tx_queue *txq = &priv->txq39[IWL_CMD_QUEUE_NUM];
 506         struct iwl_queue *q = &txq->q;
 507         struct iwl3945_tfd_frame *tfd;
 508         u32 *control_flags;
 509         struct iwl3945_cmd *out_cmd;
 510         u32 idx;
 511         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 512         dma_addr_t phys_addr;
 513         int pad;
 514         u16 count;
 515         int ret;
 516         unsigned long flags;
 517
 518         /* If any of the command structures end up being larger than
 519          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 520          * we will need to increase the size of the TFD entries */
 521         BUG_ON((fix_size > TFD39_MAX_PAYLOAD_SIZE) &&
 522                !(cmd->meta.flags & CMD_SIZE_HUGE));
 523
 524
 525         if (iwl3945_is_rfkill(priv)) {
 526                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 527                 return -EIO;
 528         }
 529
 530         if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 531                 IWL_ERROR("No space for Tx\n");
 532                 return -ENOSPC;
 533         }
 534
 535         spin_lock_irqsave(&priv->hcmd_lock, flags);
 536
 537         tfd = &txq->bd[q->write_ptr];
 538         memset(tfd, 0, sizeof(*tfd));
 539
 540         control_flags = (u32 *) tfd;
 541
 542         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 543         out_cmd = &txq->cmd[idx];
 544
 545         out_cmd->hdr.cmd = cmd->id;
 546         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 547         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 548
 549         /* At this point, the out_cmd now has all of the incoming cmd
 550          * information */
 551
 552         out_cmd->hdr.flags = 0;
 553         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 554                         INDEX_TO_SEQ(q->write_ptr));
 555         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 556                 out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
 557
 558         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 559                         offsetof(struct iwl3945_cmd, hdr);
 560         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 561
 562         pad = U32_PAD(cmd->len);
 563         count = TFD_CTL_COUNT_GET(*control_flags);
 564         *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
 565
 566         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 567                      "%d bytes at %d[%d]:%d\n",
 568                      get_cmd_string(out_cmd->hdr.cmd),
 569                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 570                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 571
 572         txq->need_update = 1;
 573
 574         /* Increment and update queue's write index */
 575         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 576         ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
 577
 578         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 579         return ret ? ret : idx;
 580 }
 581
 582 static int iwl3945_send_cmd_async(struct iwl_priv *priv, struct iwl3945_host_cmd *cmd)
 583 {
 584         int ret;
 585
 586         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
 587
 588         /* An asynchronous command can not expect an SKB to be set. */
 589         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
 590
 591         /* An asynchronous command MUST have a callback. */
 592         BUG_ON(!cmd->meta.u.callback);
 593
 594         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 595                 return -EBUSY;
 596
 597         ret = iwl3945_enqueue_hcmd(priv, cmd);
 598         if (ret < 0) {
 599                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 600                           get_cmd_string(cmd->id), ret);
 601                 return ret;
 602         }
 603         return 0;
 604 }
 605
 606 static int iwl3945_send_cmd_sync(struct iwl_priv *priv, struct iwl3945_host_cmd *cmd)
 607 {
 608         int cmd_idx;
 609         int ret;
 610
 611         BUG_ON(cmd->meta.flags & CMD_ASYNC);
 612
 613          /* A synchronous command can not have a callback set. */
 614         BUG_ON(cmd->meta.u.callback != NULL);
 615
 616         if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
 617                 IWL_ERROR("Error sending %s: Already sending a host command\n",
 618                           get_cmd_string(cmd->id));
 619                 ret = -EBUSY;
 620                 goto out;
 621         }
 622
 623         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 624
 625         if (cmd->meta.flags & CMD_WANT_SKB)
 626                 cmd->meta.source = &cmd->meta;
 627
 628         cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
 629         if (cmd_idx < 0) {
 630                 ret = cmd_idx;
 631                 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
 632                           get_cmd_string(cmd->id), ret);
 633                 goto out;
 634         }
 635
 636         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 637                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
 638                         HOST_COMPLETE_TIMEOUT);
 639         if (!ret) {
 640                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
 641                         IWL_ERROR("Error sending %s: time out after %dms.\n",
 642                                   get_cmd_string(cmd->id),
 643                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
 644
 645                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 646                         ret = -ETIMEDOUT;
 647                         goto cancel;
 648                 }
 649         }
 650
 651         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 652                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
 653                                get_cmd_string(cmd->id));
 654                 ret = -ECANCELED;
 655                 goto fail;
 656         }
 657         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
 658                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
 659                                get_cmd_string(cmd->id));
 660                 ret = -EIO;
 661                 goto fail;
 662         }
 663         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
 664                 IWL_ERROR("Error: Response NULL in '%s'\n",
 665                           get_cmd_string(cmd->id));
 666                 ret = -EIO;
 667                 goto cancel;
 668         }
 669
 670         ret = 0;
 671         goto out;
 672
 673 cancel:
 674         if (cmd->meta.flags & CMD_WANT_SKB) {
 675                 struct iwl3945_cmd *qcmd;
 676
 677                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
 678                  * TX cmd queue. Otherwise in case the cmd comes
 679                  * in later, it will possibly set an invalid
 680                  * address (cmd->meta.source). */
 681                 qcmd = &priv->txq39[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
 682                 qcmd->meta.flags &= ~CMD_WANT_SKB;
 683         }
 684 fail:
 685         if (cmd->meta.u.skb) {
 686                 dev_kfree_skb_any(cmd->meta.u.skb);
 687                 cmd->meta.u.skb = NULL;
 688         }
 689 out:
 690         clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
 691         return ret;
 692 }
 693
 694 int iwl3945_send_cmd(struct iwl_priv *priv, struct iwl3945_host_cmd *cmd)
 695 {
 696         if (cmd->meta.flags & CMD_ASYNC)
 697                 return iwl3945_send_cmd_async(priv, cmd);
 698
 699         return iwl3945_send_cmd_sync(priv, cmd);
 700 }
 701
 702 int iwl3945_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
 703 {
 704         struct iwl3945_host_cmd cmd = {
 705                 .id = id,
 706                 .len = len,
 707                 .data = data,
 708         };
 709
 710         return iwl3945_send_cmd_sync(priv, &cmd);
 711 }
 712
 713 static int __must_check iwl3945_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
 714 {
 715         struct iwl3945_host_cmd cmd = {
 716                 .id = id,
 717                 .len = sizeof(val),
 718                 .data = &val,
 719         };
 720
 721         return iwl3945_send_cmd_sync(priv, &cmd);
 722 }
 723
 724 int iwl3945_send_statistics_request(struct iwl_priv *priv)
 725 {
 726         return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
 727 }
 728
 729 /**
 730  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
 731  * @band: 2.4 or 5 GHz band
 732  * @channel: Any channel valid for the requested band
 733
 734  * In addition to setting the staging RXON, priv->band is also set.
 735  *
 736  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 737  * in the staging RXON flag structure based on the band
 738  */
 739 static int iwl3945_set_rxon_channel(struct iwl_priv *priv,
 740                                     enum ieee80211_band band,
 741                                     u16 channel)
 742 {
 743         if (!iwl3945_get_channel_info(priv, band, channel)) {
 744                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
 745                                channel, band);
 746                 return -EINVAL;
 747         }
 748
 749         if ((le16_to_cpu(priv->staging39_rxon.channel) == channel) &&
 750             (priv->band == band))
 751                 return 0;
 752
 753         priv->staging39_rxon.channel = cpu_to_le16(channel);
 754         if (band == IEEE80211_BAND_5GHZ)
 755                 priv->staging39_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
 756         else
 757                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 758
 759         priv->band = band;
 760
 761         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
 762
 763         return 0;
 764 }
 765
 766 /**
 767  * iwl3945_check_rxon_cmd - validate RXON structure is valid
 768  *
 769  * NOTE:  This is really only useful during development and can eventually
 770  * be #ifdef'd out once the driver is stable and folks aren't actively
 771  * making changes
 772  */
 773 static int iwl3945_check_rxon_cmd(struct iwl_priv *priv)
 774 {
 775         int error = 0;
 776         int counter = 1;
 777         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
 778
 779         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 780                 error |= le32_to_cpu(rxon->flags &
 781                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 782                                  RXON_FLG_RADAR_DETECT_MSK));
 783                 if (error)
 784                         IWL_WARNING("check 24G fields %d | %d\n",
 785                                     counter++, error);
 786         } else {
 787                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 788                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 789                 if (error)
 790                         IWL_WARNING("check 52 fields %d | %d\n",
 791                                     counter++, error);
 792                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 793                 if (error)
 794                         IWL_WARNING("check 52 CCK %d | %d\n",
 795                                     counter++, error);
 796         }
 797         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 798         if (error)
 799                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 800
 801         /* make sure basic rates 6Mbps and 1Mbps are supported */
 802         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 803                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 804         if (error)
 805                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 806
 807         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 808         if (error)
 809                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 810
 811         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 812                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 813         if (error)
 814                 IWL_WARNING("check CCK and short slot %d | %d\n",
 815                             counter++, error);
 816
 817         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 818                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 819         if (error)
 820                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 821                             counter++, error);
 822
 823         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 824                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 825         if (error)
 826                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 827                             counter++, error);
 828
 829         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
 830                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
 831                                 RXON_FLG_ANT_A_MSK)) == 0);
 832         if (error)
 833                 IWL_WARNING("check antenna %d %d\n", counter++, error);
 834
 835         if (error)
 836                 IWL_WARNING("Tuning to channel %d\n",
 837                             le16_to_cpu(rxon->channel));
 838
 839         if (error) {
 840                 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
 841                 return -1;
 842         }
 843         return 0;
 844 }
 845
 846 /**
 847  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 848  * @priv: staging_rxon is compared to active_rxon
 849  *
 850  * If the RXON structure is changing enough to require a new tune,
 851  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 852  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 853  */
 854 static int iwl3945_full_rxon_required(struct iwl_priv *priv)
 855 {
 856
 857         /* These items are only settable from the full RXON command */
 858         if (!(iwl3945_is_associated(priv)) ||
 859             compare_ether_addr(priv->staging39_rxon.bssid_addr,
 860                                priv->active39_rxon.bssid_addr) ||
 861             compare_ether_addr(priv->staging39_rxon.node_addr,
 862                                priv->active39_rxon.node_addr) ||
 863             compare_ether_addr(priv->staging39_rxon.wlap_bssid_addr,
 864                                priv->active39_rxon.wlap_bssid_addr) ||
 865             (priv->staging39_rxon.dev_type != priv->active39_rxon.dev_type) ||
 866             (priv->staging39_rxon.channel != priv->active39_rxon.channel) ||
 867             (priv->staging39_rxon.air_propagation !=
 868              priv->active39_rxon.air_propagation) ||
 869             (priv->staging39_rxon.assoc_id != priv->active39_rxon.assoc_id))
 870                 return 1;
 871
 872         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 873          * be updated with the RXON_ASSOC command -- however only some
 874          * flag transitions are allowed using RXON_ASSOC */
 875
 876         /* Check if we are not switching bands */
 877         if ((priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 878             (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK))
 879                 return 1;
 880
 881         /* Check if we are switching association toggle */
 882         if ((priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 883                 (priv->active39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 884                 return 1;
 885
 886         return 0;
 887 }
 888
 889 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
 890 {
 891         int rc = 0;
 892         struct iwl_rx_packet *res = NULL;
 893         struct iwl3945_rxon_assoc_cmd rxon_assoc;
 894         struct iwl3945_host_cmd cmd = {
 895                 .id = REPLY_RXON_ASSOC,
 896                 .len = sizeof(rxon_assoc),
 897                 .meta.flags = CMD_WANT_SKB,
 898                 .data = &rxon_assoc,
 899         };
 900         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging39_rxon;
 901         const struct iwl3945_rxon_cmd *rxon2 = &priv->active39_rxon;
 902
 903         if ((rxon1->flags == rxon2->flags) &&
 904             (rxon1->filter_flags == rxon2->filter_flags) &&
 905             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 906             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 907                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 908                 return 0;
 909         }
 910
 911         rxon_assoc.flags = priv->staging39_rxon.flags;
 912         rxon_assoc.filter_flags = priv->staging39_rxon.filter_flags;
 913         rxon_assoc.ofdm_basic_rates = priv->staging39_rxon.ofdm_basic_rates;
 914         rxon_assoc.cck_basic_rates = priv->staging39_rxon.cck_basic_rates;
 915         rxon_assoc.reserved = 0;
 916
 917         rc = iwl3945_send_cmd_sync(priv, &cmd);
 918         if (rc)
 919                 return rc;
 920
 921         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 922         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 923                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
 924                 rc = -EIO;
 925         }
 926
 927         priv->alloc_rxb_skb--;
 928         dev_kfree_skb_any(cmd.meta.u.skb);
 929
 930         return rc;
 931 }
 932
 933 /**
 934  * iwl3945_commit_rxon - commit staging_rxon to hardware
 935  *
 936  * The RXON command in staging_rxon is committed to the hardware and
 937  * the active_rxon structure is updated with the new data.  This
 938  * function correctly transitions out of the RXON_ASSOC_MSK state if
 939  * a HW tune is required based on the RXON structure changes.
 940  */
 941 static int iwl3945_commit_rxon(struct iwl_priv *priv)
 942 {
 943         /* cast away the const for active_rxon in this function */
 944         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active39_rxon;
 945         int rc = 0;
 946
 947         if (!iwl3945_is_alive(priv))
 948                 return -1;
 949
 950         /* always get timestamp with Rx frame */
 951         priv->staging39_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 952
 953         /* select antenna */
 954         priv->staging39_rxon.flags &=
 955             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
 956         priv->staging39_rxon.flags |= iwl3945_get_antenna_flags(priv);
 957
 958         rc = iwl3945_check_rxon_cmd(priv);
 959         if (rc) {
 960                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 961                 return -EINVAL;
 962         }
 963
 964         /* If we don't need to send a full RXON, we can use
 965          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
 966          * and other flags for the current radio configuration. */
 967         if (!iwl3945_full_rxon_required(priv)) {
 968                 rc = iwl3945_send_rxon_assoc(priv);
 969                 if (rc) {
 970                         IWL_ERROR("Error setting RXON_ASSOC "
 971                                   "configuration (%d).\n", rc);
 972                         return rc;
 973                 }
 974
 975                 memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
 976
 977                 return 0;
 978         }
 979
 980         /* If we are currently associated and the new config requires
 981          * an RXON_ASSOC and the new config wants the associated mask enabled,
 982          * we must clear the associated from the active configuration
 983          * before we apply the new config */
 984         if (iwl3945_is_associated(priv) &&
 985             (priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 986                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 987                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 988
 989                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
 990                                       sizeof(struct iwl3945_rxon_cmd),
 991                                       &priv->active39_rxon);
 992
 993                 /* If the mask clearing failed then we set
 994                  * active_rxon back to what it was previously */
 995                 if (rc) {
 996                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 997                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 998                                   "configuration (%d).\n", rc);
 999                         return rc;
1000                 }
1001         }
1002
1003         IWL_DEBUG_INFO("Sending RXON\n"
1004                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1005                        "* channel = %d\n"
1006                        "* bssid = %pM\n",
1007                        ((priv->staging39_rxon.filter_flags &
1008                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1009                        le16_to_cpu(priv->staging39_rxon.channel),
1010                        priv->staging_rxon.bssid_addr);
1011
1012         /* Apply the new configuration */
1013         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1014                               sizeof(struct iwl3945_rxon_cmd), &priv->staging39_rxon);
1015         if (rc) {
1016                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1017                 return rc;
1018         }
1019
1020         memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
1021
1022         iwl3945_clear_stations_table(priv);
1023
1024         /* If we issue a new RXON command which required a tune then we must
1025          * send a new TXPOWER command or we won't be able to Tx any frames */
1026         rc = iwl3945_hw_reg_send_txpower(priv);
1027         if (rc) {
1028                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1029                 return rc;
1030         }
1031
1032         /* Add the broadcast address so we can send broadcast frames */
1033         if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
1034             IWL_INVALID_STATION) {
1035                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1036                 return -EIO;
1037         }
1038
1039         /* If we have set the ASSOC_MSK and we are in BSS mode then
1040          * add the IWL_AP_ID to the station rate table */
1041         if (iwl3945_is_associated(priv) &&
1042             (priv->iw_mode == NL80211_IFTYPE_STATION))
1043                 if (iwl3945_add_station(priv, priv->active39_rxon.bssid_addr, 1, 0)
1044                     == IWL_INVALID_STATION) {
1045                         IWL_ERROR("Error adding AP address for transmit.\n");
1046                         return -EIO;
1047                 }
1048
1049         /* Init the hardware's rate fallback order based on the band */
1050         rc = iwl3945_init_hw_rate_table(priv);
1051         if (rc) {
1052                 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1053                 return -EIO;
1054         }
1055
1056         return 0;
1057 }
1058
1059 static int iwl3945_send_bt_config(struct iwl_priv *priv)
1060 {
1061         struct iwl_bt_cmd bt_cmd = {
1062                 .flags = 3,
1063                 .lead_time = 0xAA,
1064                 .max_kill = 1,
1065                 .kill_ack_mask = 0,
1066                 .kill_cts_mask = 0,
1067         };
1068
1069         return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1070                                         sizeof(bt_cmd), &bt_cmd);
1071 }
1072
1073 static int iwl3945_send_scan_abort(struct iwl_priv *priv)
1074 {
1075         int rc = 0;
1076         struct iwl_rx_packet *res;
1077         struct iwl3945_host_cmd cmd = {
1078                 .id = REPLY_SCAN_ABORT_CMD,
1079                 .meta.flags = CMD_WANT_SKB,
1080         };
1081
1082         /* If there isn't a scan actively going on in the hardware
1083          * then we are in between scan bands and not actually
1084          * actively scanning, so don't send the abort command */
1085         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1086                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1087                 return 0;
1088         }
1089
1090         rc = iwl3945_send_cmd_sync(priv, &cmd);
1091         if (rc) {
1092                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1093                 return rc;
1094         }
1095
1096         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1097         if (res->u.status != CAN_ABORT_STATUS) {
1098                 /* The scan abort will return 1 for success or
1099                  * 2 for "failure".  A failure condition can be
1100                  * due to simply not being in an active scan which
1101                  * can occur if we send the scan abort before we
1102                  * the microcode has notified us that a scan is
1103                  * completed. */
1104                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1105                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1106                 clear_bit(STATUS_SCAN_HW, &priv->status);
1107         }
1108
1109         dev_kfree_skb_any(cmd.meta.u.skb);
1110
1111         return rc;
1112 }
1113
1114 static int iwl3945_card_state_sync_callback(struct iwl_priv *priv,
1115                                         struct iwl3945_cmd *cmd,
1116                                         struct sk_buff *skb)
1117 {
1118         return 1;
1119 }
1120
1121 /*
1122  * CARD_STATE_CMD
1123  *
1124  * Use: Sets the device's internal card state to enable, disable, or halt
1125  *
1126  * When in the 'enable' state the card operates as normal.
1127  * When in the 'disable' state, the card enters into a low power mode.
1128  * When in the 'halt' state, the card is shut down and must be fully
1129  * restarted to come back on.
1130  */
1131 static int iwl3945_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1132 {
1133         struct iwl3945_host_cmd cmd = {
1134                 .id = REPLY_CARD_STATE_CMD,
1135                 .len = sizeof(u32),
1136                 .data = &flags,
1137                 .meta.flags = meta_flag,
1138         };
1139
1140         if (meta_flag & CMD_ASYNC)
1141                 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1142
1143         return iwl3945_send_cmd(priv, &cmd);
1144 }
1145
1146 static int iwl3945_add_sta_sync_callback(struct iwl_priv *priv,
1147                                      struct iwl3945_cmd *cmd, struct sk_buff *skb)
1148 {
1149         struct iwl_rx_packet *res = NULL;
1150
1151         if (!skb) {
1152                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1153                 return 1;
1154         }
1155
1156         res = (struct iwl_rx_packet *)skb->data;
1157         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1158                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1159                           res->hdr.flags);
1160                 return 1;
1161         }
1162
1163         switch (res->u.add_sta.status) {
1164         case ADD_STA_SUCCESS_MSK:
1165                 break;
1166         default:
1167                 break;
1168         }
1169
1170         /* We didn't cache the SKB; let the caller free it */
1171         return 1;
1172 }
1173
1174 int iwl3945_send_add_station(struct iwl_priv *priv,
1175                          struct iwl3945_addsta_cmd *sta, u8 flags)
1176 {
1177         struct iwl_rx_packet *res = NULL;
1178         int rc = 0;
1179         struct iwl3945_host_cmd cmd = {
1180                 .id = REPLY_ADD_STA,
1181                 .len = sizeof(struct iwl3945_addsta_cmd),
1182                 .meta.flags = flags,
1183                 .data = sta,
1184         };
1185
1186         if (flags & CMD_ASYNC)
1187                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1188         else
1189                 cmd.meta.flags |= CMD_WANT_SKB;
1190
1191         rc = iwl3945_send_cmd(priv, &cmd);
1192
1193         if (rc || (flags & CMD_ASYNC))
1194                 return rc;
1195
1196         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1197         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1198                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1199                           res->hdr.flags);
1200                 rc = -EIO;
1201         }
1202
1203         if (rc == 0) {
1204                 switch (res->u.add_sta.status) {
1205                 case ADD_STA_SUCCESS_MSK:
1206                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1207                         break;
1208                 default:
1209                         rc = -EIO;
1210                         IWL_WARNING("REPLY_ADD_STA failed\n");
1211                         break;
1212                 }
1213         }
1214
1215         priv->alloc_rxb_skb--;
1216         dev_kfree_skb_any(cmd.meta.u.skb);
1217
1218         return rc;
1219 }
1220
1221 static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
1222                                    struct ieee80211_key_conf *keyconf,
1223                                    u8 sta_id)
1224 {
1225         unsigned long flags;
1226         __le16 key_flags = 0;
1227
1228         switch (keyconf->alg) {
1229         case ALG_CCMP:
1230                 key_flags |= STA_KEY_FLG_CCMP;
1231                 key_flags |= cpu_to_le16(
1232                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1233                 key_flags &= ~STA_KEY_FLG_INVALID;
1234                 break;
1235         case ALG_TKIP:
1236         case ALG_WEP:
1237         default:
1238                 return -EINVAL;
1239         }
1240         spin_lock_irqsave(&priv->sta_lock, flags);
1241         priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
1242         priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
1243         memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
1244                keyconf->keylen);
1245
1246         memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
1247                keyconf->keylen);
1248         priv->stations_39[sta_id].sta.key.key_flags = key_flags;
1249         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1250         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1251
1252         spin_unlock_irqrestore(&priv->sta_lock, flags);
1253
1254         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1255         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
1256         return 0;
1257 }
1258
1259 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1260 {
1261         unsigned long flags;
1262
1263         spin_lock_irqsave(&priv->sta_lock, flags);
1264         memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1265         memset(&priv->stations_39[sta_id].sta.key, 0,
1266                 sizeof(struct iwl4965_keyinfo));
1267         priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1268         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1269         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1270         spin_unlock_irqrestore(&priv->sta_lock, flags);
1271
1272         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1273         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
1274         return 0;
1275 }
1276
1277 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
1278 {
1279         struct list_head *element;
1280
1281         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1282                        priv->frames_count);
1283
1284         while (!list_empty(&priv->free_frames)) {
1285                 element = priv->free_frames.next;
1286                 list_del(element);
1287                 kfree(list_entry(element, struct iwl3945_frame, list));
1288                 priv->frames_count--;
1289         }
1290
1291         if (priv->frames_count) {
1292                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1293                             priv->frames_count);
1294                 priv->frames_count = 0;
1295         }
1296 }
1297
1298 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
1299 {
1300         struct iwl3945_frame *frame;
1301         struct list_head *element;
1302         if (list_empty(&priv->free_frames)) {
1303                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1304                 if (!frame) {
1305                         IWL_ERROR("Could not allocate frame!\n");
1306                         return NULL;
1307                 }
1308
1309                 priv->frames_count++;
1310                 return frame;
1311         }
1312
1313         element = priv->free_frames.next;
1314         list_del(element);
1315         return list_entry(element, struct iwl3945_frame, list);
1316 }
1317
1318 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
1319 {
1320         memset(frame, 0, sizeof(*frame));
1321         list_add(&frame->list, &priv->free_frames);
1322 }
1323
1324 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
1325                                 struct ieee80211_hdr *hdr,
1326                                 int left)
1327 {
1328
1329         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1330             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1331              (priv->iw_mode != NL80211_IFTYPE_AP)))
1332                 return 0;
1333
1334         if (priv->ibss_beacon->len > left)
1335                 return 0;
1336
1337         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1338
1339         return priv->ibss_beacon->len;
1340 }
1341
1342 static u8 iwl3945_rate_get_lowest_plcp(struct iwl_priv *priv)
1343 {
1344         u8 i;
1345         int rate_mask;
1346
1347         /* Set rate mask*/
1348         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1349                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1350         else
1351                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
1352
1353         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1354              i = iwl3945_rates[i].next_ieee) {
1355                 if (rate_mask & (1 << i))
1356                         return iwl3945_rates[i].plcp;
1357         }
1358
1359         /* No valid rate was found. Assign the lowest one */
1360         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1361                 return IWL_RATE_1M_PLCP;
1362         else
1363                 return IWL_RATE_6M_PLCP;
1364 }
1365
1366 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
1367 {
1368         struct iwl3945_frame *frame;
1369         unsigned int frame_size;
1370         int rc;
1371         u8 rate;
1372
1373         frame = iwl3945_get_free_frame(priv);
1374
1375         if (!frame) {
1376                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1377                           "command.\n");
1378                 return -ENOMEM;
1379         }
1380
1381         rate = iwl3945_rate_get_lowest_plcp(priv);
1382
1383         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1384
1385         rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1386                               &frame->u.cmd[0]);
1387
1388         iwl3945_free_frame(priv, frame);
1389
1390         return rc;
1391 }
1392
1393 /******************************************************************************
1394  *
1395  * EEPROM related functions
1396  *
1397  ******************************************************************************/
1398
1399 static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1400 {
1401         memcpy(mac, priv->eeprom39.mac_address, 6);
1402 }
1403
1404 /*
1405  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1406  * embedded controller) as EEPROM reader; each read is a series of pulses
1407  * to/from the EEPROM chip, not a single event, so even reads could conflict
1408  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1409  * simply claims ownership, which should be safe when this function is called
1410  * (i.e. before loading uCode!).
1411  */
1412 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
1413 {
1414         _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1415         return 0;
1416 }
1417
1418 /**
1419  * iwl3945_eeprom_init - read EEPROM contents
1420  *
1421  * Load the EEPROM contents from adapter into priv->eeprom39
1422  *
1423  * NOTE:  This routine uses the non-debug IO access functions.
1424  */
1425 int iwl3945_eeprom_init(struct iwl_priv *priv)
1426 {
1427         u16 *e = (u16 *)&priv->eeprom39;
1428         u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1429         int sz = sizeof(priv->eeprom39);
1430         int ret;
1431         u16 addr;
1432
1433         /* The EEPROM structure has several padding buffers within it
1434          * and when adding new EEPROM maps is subject to programmer errors
1435          * which may be very difficult to identify without explicitly
1436          * checking the resulting size of the eeprom map. */
1437         BUILD_BUG_ON(sizeof(priv->eeprom39) != IWL_EEPROM_IMAGE_SIZE);
1438
1439         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1440                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
1441                 return -ENOENT;
1442         }
1443
1444         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1445         ret = iwl3945_eeprom_acquire_semaphore(priv);
1446         if (ret < 0) {
1447                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1448                 return -ENOENT;
1449         }
1450
1451         /* eeprom is an array of 16bit values */
1452         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1453                 u32 r;
1454
1455                 _iwl_write32(priv, CSR_EEPROM_REG,
1456                                  CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1457                 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1458                 ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
1459                                               CSR_EEPROM_REG_READ_VALID_MSK,
1460                                               IWL_EEPROM_ACCESS_TIMEOUT);
1461                 if (ret < 0) {
1462                         IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
1463                         return ret;
1464                 }
1465
1466                 r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
1467                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1468         }
1469
1470         return 0;
1471 }
1472
1473 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
1474 {
1475         if (priv->shared_virt)
1476                 pci_free_consistent(priv->pci_dev,
1477                                     sizeof(struct iwl3945_shared),
1478                                     priv->shared_virt,
1479                                     priv->shared_phys);
1480 }
1481
1482 /**
1483  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1484  *
1485  * return : set the bit for each supported rate insert in ie
1486  */
1487 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1488                                     u16 basic_rate, int *left)
1489 {
1490         u16 ret_rates = 0, bit;
1491         int i;
1492         u8 *cnt = ie;
1493         u8 *rates = ie + 1;
1494
1495         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1496                 if (bit & supported_rate) {
1497                         ret_rates |= bit;
1498                         rates[*cnt] = iwl3945_rates[i].ieee |
1499                                 ((bit & basic_rate) ? 0x80 : 0x00);
1500                         (*cnt)++;
1501                         (*left)--;
1502                         if ((*left <= 0) ||
1503                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1504                                 break;
1505                 }
1506         }
1507
1508         return ret_rates;
1509 }
1510
1511 /**
1512  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1513  */
1514 static u16 iwl3945_fill_probe_req(struct iwl_priv *priv,
1515                               struct ieee80211_mgmt *frame,
1516                               int left)
1517 {
1518         int len = 0;
1519         u8 *pos = NULL;
1520         u16 active_rates, ret_rates, cck_rates;
1521
1522         /* Make sure there is enough space for the probe request,
1523          * two mandatory IEs and the data */
1524         left -= 24;
1525         if (left < 0)
1526                 return 0;
1527         len += 24;
1528
1529         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1530         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
1531         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1532         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
1533         frame->seq_ctrl = 0;
1534
1535         /* fill in our indirect SSID IE */
1536         /* ...next IE... */
1537
1538         left -= 2;
1539         if (left < 0)
1540                 return 0;
1541         len += 2;
1542         pos = &(frame->u.probe_req.variable[0]);
1543         *pos++ = WLAN_EID_SSID;
1544         *pos++ = 0;
1545
1546         /* fill in supported rate */
1547         /* ...next IE... */
1548         left -= 2;
1549         if (left < 0)
1550                 return 0;
1551
1552         /* ... fill it in... */
1553         *pos++ = WLAN_EID_SUPP_RATES;
1554         *pos = 0;
1555
1556         priv->active_rate = priv->rates_mask;
1557         active_rates = priv->active_rate;
1558         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1559
1560         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1561         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1562                         priv->active_rate_basic, &left);
1563         active_rates &= ~ret_rates;
1564
1565         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1566                                  priv->active_rate_basic, &left);
1567         active_rates &= ~ret_rates;
1568
1569         len += 2 + *pos;
1570         pos += (*pos) + 1;
1571         if (active_rates == 0)
1572                 goto fill_end;
1573
1574         /* fill in supported extended rate */
1575         /* ...next IE... */
1576         left -= 2;
1577         if (left < 0)
1578                 return 0;
1579         /* ... fill it in... */
1580         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1581         *pos = 0;
1582         iwl3945_supported_rate_to_ie(pos, active_rates,
1583                                  priv->active_rate_basic, &left);
1584         if (*pos > 0)
1585                 len += 2 + *pos;
1586
1587  fill_end:
1588         return (u16)len;
1589 }
1590
1591 /*
1592  * QoS  support
1593 */
1594 static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
1595                                        struct iwl_qosparam_cmd *qos)
1596 {
1597
1598         return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1599                                 sizeof(struct iwl_qosparam_cmd), qos);
1600 }
1601
1602 static void iwl3945_reset_qos(struct iwl_priv *priv)
1603 {
1604         u16 cw_min = 15;
1605         u16 cw_max = 1023;
1606         u8 aifs = 2;
1607         u8 is_legacy = 0;
1608         unsigned long flags;
1609         int i;
1610
1611         spin_lock_irqsave(&priv->lock, flags);
1612         priv->qos_data.qos_active = 0;
1613
1614         /* QoS always active in AP and ADHOC mode
1615          * In STA mode wait for association
1616          */
1617         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
1618             priv->iw_mode == NL80211_IFTYPE_AP)
1619                 priv->qos_data.qos_active = 1;
1620         else
1621                 priv->qos_data.qos_active = 0;
1622
1623
1624         /* check for legacy mode */
1625         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
1626              (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
1627             (priv->iw_mode == NL80211_IFTYPE_STATION &&
1628              (priv->staging39_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
1629                 cw_min = 31;
1630                 is_legacy = 1;
1631         }
1632
1633         if (priv->qos_data.qos_active)
1634                 aifs = 3;
1635
1636         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1637         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1638         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1639         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1640         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1641
1642         if (priv->qos_data.qos_active) {
1643                 i = 1;
1644                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1645                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1646                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1647                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1648                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1649
1650                 i = 2;
1651                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1652                         cpu_to_le16((cw_min + 1) / 2 - 1);
1653                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1654                         cpu_to_le16(cw_max);
1655                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1656                 if (is_legacy)
1657                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1658                                 cpu_to_le16(6016);
1659                 else
1660                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1661                                 cpu_to_le16(3008);
1662                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1663
1664                 i = 3;
1665                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1666                         cpu_to_le16((cw_min + 1) / 4 - 1);
1667                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1668                         cpu_to_le16((cw_max + 1) / 2 - 1);
1669                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1670                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1671                 if (is_legacy)
1672                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1673                                 cpu_to_le16(3264);
1674                 else
1675                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
1676                                 cpu_to_le16(1504);
1677         } else {
1678                 for (i = 1; i < 4; i++) {
1679                         priv->qos_data.def_qos_parm.ac[i].cw_min =
1680                                 cpu_to_le16(cw_min);
1681                         priv->qos_data.def_qos_parm.ac[i].cw_max =
1682                                 cpu_to_le16(cw_max);
1683                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1684                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1685                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1686                 }
1687         }
1688         IWL_DEBUG_QOS("set QoS to default \n");
1689
1690         spin_unlock_irqrestore(&priv->lock, flags);
1691 }
1692
1693 static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
1694 {
1695         unsigned long flags;
1696
1697         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1698                 return;
1699
1700         spin_lock_irqsave(&priv->lock, flags);
1701         priv->qos_data.def_qos_parm.qos_flags = 0;
1702
1703         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1704             !priv->qos_data.qos_cap.q_AP.txop_request)
1705                 priv->qos_data.def_qos_parm.qos_flags |=
1706                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1707
1708         if (priv->qos_data.qos_active)
1709                 priv->qos_data.def_qos_parm.qos_flags |=
1710                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1711
1712         spin_unlock_irqrestore(&priv->lock, flags);
1713
1714         if (force || iwl3945_is_associated(priv)) {
1715                 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
1716                               priv->qos_data.qos_active);
1717
1718                 iwl3945_send_qos_params_command(priv,
1719                                 &(priv->qos_data.def_qos_parm));
1720         }
1721 }
1722
1723 /*
1724  * Power management (not Tx power!) functions
1725  */
1726 #define MSEC_TO_USEC 1024
1727
1728
1729 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1730 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1731 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1732 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1733                                      __constant_cpu_to_le32(X1), \
1734                                      __constant_cpu_to_le32(X2), \
1735                                      __constant_cpu_to_le32(X3), \
1736                                      __constant_cpu_to_le32(X4)}
1737
1738 /* default power management (not Tx power) table values */
1739 /* for TIM  0-10 */
1740 static struct iwl_power_vec_entry range_0[IWL39_POWER_AC] = {
1741         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1742         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1743         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1744         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1745         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1746         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1747 };
1748
1749 /* for TIM > 10 */
1750 static struct iwl_power_vec_entry range_1[IWL39_POWER_AC] = {
1751         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1752         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1753                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1754         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1755                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1756         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1757                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1758         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1759         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1760                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1761 };
1762
1763 int iwl3945_power_init_handle(struct iwl_priv *priv)
1764 {
1765         int rc = 0, i;
1766         struct iwl3945_power_mgr *pow_data;
1767         int size = sizeof(struct iwl_power_vec_entry) * IWL39_POWER_AC;
1768         u16 pci_pm;
1769
1770         IWL_DEBUG_POWER("Initialize power \n");
1771
1772         pow_data = &(priv->power_data_39);
1773
1774         memset(pow_data, 0, sizeof(*pow_data));
1775
1776         pow_data->active_index = IWL_POWER_RANGE_0;
1777         pow_data->dtim_val = 0xffff;
1778
1779         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1780         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1781
1782         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1783         if (rc != 0)
1784                 return 0;
1785         else {
1786                 struct iwl_powertable_cmd *cmd;
1787
1788                 IWL_DEBUG_POWER("adjust power command flags\n");
1789
1790                 for (i = 0; i < IWL39_POWER_AC; i++) {
1791                         cmd = &pow_data->pwr_range_0[i].cmd;
1792
1793                         if (pci_pm & 0x1)
1794                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1795                         else
1796                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1797                 }
1798         }
1799         return rc;
1800 }
1801
1802 static int iwl3945_update_power_cmd(struct iwl_priv *priv,
1803                                 struct iwl_powertable_cmd *cmd, u32 mode)
1804 {
1805         int rc = 0, i;
1806         u8 skip;
1807         u32 max_sleep = 0;
1808         struct iwl_power_vec_entry *range;
1809         u8 period = 0;
1810         struct iwl3945_power_mgr *pow_data;
1811
1812         if (mode > IWL_POWER_INDEX_5) {
1813                 IWL_DEBUG_POWER("Error invalid power mode \n");
1814                 return -1;
1815         }
1816         pow_data = &(priv->power_data_39);
1817
1818         if (pow_data->active_index == IWL_POWER_RANGE_0)
1819                 range = &pow_data->pwr_range_0[0];
1820         else
1821                 range = &pow_data->pwr_range_1[1];
1822
1823         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1824
1825 #ifdef IWL_MAC80211_DISABLE
1826         if (priv->assoc_network != NULL) {
1827                 unsigned long flags;
1828
1829                 period = priv->assoc_network->tim.tim_period;
1830         }
1831 #endif  /*IWL_MAC80211_DISABLE */
1832         skip = range[mode].no_dtim;
1833
1834         if (period == 0) {
1835                 period = 1;
1836                 skip = 0;
1837         }
1838
1839         if (skip == 0) {
1840                 max_sleep = period;
1841                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1842         } else {
1843                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1844                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1845                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1846         }
1847
1848         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1849                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1850                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1851         }
1852
1853         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1854         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1855         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1856         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1857                         le32_to_cpu(cmd->sleep_interval[0]),
1858                         le32_to_cpu(cmd->sleep_interval[1]),
1859                         le32_to_cpu(cmd->sleep_interval[2]),
1860                         le32_to_cpu(cmd->sleep_interval[3]),
1861                         le32_to_cpu(cmd->sleep_interval[4]));
1862
1863         return rc;
1864 }
1865
1866 static int iwl3945_send_power_mode(struct iwl_priv *priv, u32 mode)
1867 {
1868         u32 uninitialized_var(final_mode);
1869         int rc;
1870         struct iwl_powertable_cmd cmd;
1871
1872         /* If on battery, set to 3,
1873          * if plugged into AC power, set to CAM ("continuously aware mode"),
1874          * else user level */
1875         switch (mode) {
1876         case IWL39_POWER_BATTERY:
1877                 final_mode = IWL_POWER_INDEX_3;
1878                 break;
1879         case IWL39_POWER_AC:
1880                 final_mode = IWL_POWER_MODE_CAM;
1881                 break;
1882         default:
1883                 final_mode = mode;
1884                 break;
1885         }
1886
1887         iwl3945_update_power_cmd(priv, &cmd, final_mode);
1888
1889         /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1890         rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD,
1891                                 sizeof(struct iwl3945_powertable_cmd), &cmd);
1892
1893         if (final_mode == IWL_POWER_MODE_CAM)
1894                 clear_bit(STATUS_POWER_PMI, &priv->status);
1895         else
1896                 set_bit(STATUS_POWER_PMI, &priv->status);
1897
1898         return rc;
1899 }
1900
1901 /**
1902  * iwl3945_scan_cancel - Cancel any currently executing HW scan
1903  *
1904  * NOTE: priv->mutex is not required before calling this function
1905  */
1906 static int iwl3945_scan_cancel(struct iwl_priv *priv)
1907 {
1908         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1909                 clear_bit(STATUS_SCANNING, &priv->status);
1910                 return 0;
1911         }
1912
1913         if (test_bit(STATUS_SCANNING, &priv->status)) {
1914                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1915                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1916                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1917                         queue_work(priv->workqueue, &priv->abort_scan);
1918
1919                 } else
1920                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1921
1922                 return test_bit(STATUS_SCANNING, &priv->status);
1923         }
1924
1925         return 0;
1926 }
1927
1928 /**
1929  * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
1930  * @ms: amount of time to wait (in milliseconds) for scan to abort
1931  *
1932  * NOTE: priv->mutex must be held before calling this function
1933  */
1934 static int iwl3945_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1935 {
1936         unsigned long now = jiffies;
1937         int ret;
1938
1939         ret = iwl3945_scan_cancel(priv);
1940         if (ret && ms) {
1941                 mutex_unlock(&priv->mutex);
1942                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1943                                 test_bit(STATUS_SCANNING, &priv->status))
1944                         msleep(1);
1945                 mutex_lock(&priv->mutex);
1946
1947                 return test_bit(STATUS_SCANNING, &priv->status);
1948         }
1949
1950         return ret;
1951 }
1952
1953 #define MAX_UCODE_BEACON_INTERVAL       1024
1954 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1955
1956 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
1957 {
1958         u16 new_val = 0;
1959         u16 beacon_factor = 0;
1960
1961         beacon_factor =
1962             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1963                 / MAX_UCODE_BEACON_INTERVAL;
1964         new_val = beacon_val / beacon_factor;
1965
1966         return cpu_to_le16(new_val);
1967 }
1968
1969 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
1970 {
1971         u64 interval_tm_unit;
1972         u64 tsf, result;
1973         unsigned long flags;
1974         struct ieee80211_conf *conf = NULL;
1975         u16 beacon_int = 0;
1976
1977         conf = ieee80211_get_hw_conf(priv->hw);
1978
1979         spin_lock_irqsave(&priv->lock, flags);
1980         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
1981         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1982
1983         tsf = priv->timestamp;
1984
1985         beacon_int = priv->beacon_int;
1986         spin_unlock_irqrestore(&priv->lock, flags);
1987
1988         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
1989                 if (beacon_int == 0) {
1990                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1991                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1992                 } else {
1993                         priv->rxon_timing.beacon_interval =
1994                                 cpu_to_le16(beacon_int);
1995                         priv->rxon_timing.beacon_interval =
1996                             iwl3945_adjust_beacon_interval(
1997                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1998                 }
1999
2000                 priv->rxon_timing.atim_window = 0;
2001         } else {
2002                 priv->rxon_timing.beacon_interval =
2003                         iwl3945_adjust_beacon_interval(conf->beacon_int);
2004                 /* TODO: we need to get atim_window from upper stack
2005                  * for now we set to 0 */
2006                 priv->rxon_timing.atim_window = 0;
2007         }
2008
2009         interval_tm_unit =
2010                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2011         result = do_div(tsf, interval_tm_unit);
2012         priv->rxon_timing.beacon_init_val =
2013             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2014
2015         IWL_DEBUG_ASSOC
2016             ("beacon interval %d beacon timer %d beacon tim %d\n",
2017                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2018                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2019                 le16_to_cpu(priv->rxon_timing.atim_window));
2020 }
2021
2022 static int iwl3945_scan_initiate(struct iwl_priv *priv)
2023 {
2024         if (!iwl3945_is_ready_rf(priv)) {
2025                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2026                 return -EIO;
2027         }
2028
2029         if (test_bit(STATUS_SCANNING, &priv->status)) {
2030                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2031                 return -EAGAIN;
2032         }
2033
2034         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2035                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2036                                "Queuing.\n");
2037                 return -EAGAIN;
2038         }
2039
2040         IWL_DEBUG_INFO("Starting scan...\n");
2041         if (priv->cfg->sku & IWL_SKU_G)
2042                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
2043         if (priv->cfg->sku & IWL_SKU_A)
2044                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
2045         set_bit(STATUS_SCANNING, &priv->status);
2046         priv->scan_start = jiffies;
2047         priv->scan_pass_start = priv->scan_start;
2048
2049         queue_work(priv->workqueue, &priv->request_scan);
2050
2051         return 0;
2052 }
2053
2054 static int iwl3945_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2055 {
2056         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
2057
2058         if (hw_decrypt)
2059                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2060         else
2061                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2062
2063         return 0;
2064 }
2065
2066 static void iwl3945_set_flags_for_phymode(struct iwl_priv *priv,
2067                                           enum ieee80211_band band)
2068 {
2069         if (band == IEEE80211_BAND_5GHZ) {
2070                 priv->staging39_rxon.flags &=
2071                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2072                       | RXON_FLG_CCK_MSK);
2073                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2074         } else {
2075                 /* Copied from iwl3945_bg_post_associate() */
2076                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2077                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2078                 else
2079                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2080
2081                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2082                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2083
2084                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2085                 priv->staging39_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2086                 priv->staging39_rxon.flags &= ~RXON_FLG_CCK_MSK;
2087         }
2088 }
2089
2090 /*
2091  * initialize rxon structure with default values from eeprom
2092  */
2093 static void iwl3945_connection_init_rx_config(struct iwl_priv *priv,
2094                                               int mode)
2095 {
2096         const struct iwl_channel_info *ch_info;
2097
2098         memset(&priv->staging39_rxon, 0, sizeof(priv->staging39_rxon));
2099
2100         switch (mode) {
2101         case NL80211_IFTYPE_AP:
2102                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_AP;
2103                 break;
2104
2105         case NL80211_IFTYPE_STATION:
2106                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_ESS;
2107                 priv->staging39_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2108                 break;
2109
2110         case NL80211_IFTYPE_ADHOC:
2111                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2112                 priv->staging39_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2113                 priv->staging39_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2114                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2115                 break;
2116
2117         case NL80211_IFTYPE_MONITOR:
2118                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2119                 priv->staging39_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2120                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2121                 break;
2122         default:
2123                 IWL_ERROR("Unsupported interface type %d\n", mode);
2124                 break;
2125         }
2126
2127 #if 0
2128         /* TODO:  Figure out when short_preamble would be set and cache from
2129          * that */
2130         if (!hw_to_local(priv->hw)->short_preamble)
2131                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2132         else
2133                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2134 #endif
2135
2136         ch_info = iwl3945_get_channel_info(priv, priv->band,
2137                                        le16_to_cpu(priv->active39_rxon.channel));
2138
2139         if (!ch_info)
2140                 ch_info = &priv->channel_info[0];
2141
2142         /*
2143          * in some case A channels are all non IBSS
2144          * in this case force B/G channel
2145          */
2146         if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
2147                 ch_info = &priv->channel_info[0];
2148
2149         priv->staging39_rxon.channel = cpu_to_le16(ch_info->channel);
2150         if (is_channel_a_band(ch_info))
2151                 priv->band = IEEE80211_BAND_5GHZ;
2152         else
2153                 priv->band = IEEE80211_BAND_2GHZ;
2154
2155         iwl3945_set_flags_for_phymode(priv, priv->band);
2156
2157         priv->staging39_rxon.ofdm_basic_rates =
2158             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2159         priv->staging39_rxon.cck_basic_rates =
2160             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2161 }
2162
2163 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
2164 {
2165         if (mode == NL80211_IFTYPE_ADHOC) {
2166                 const struct iwl_channel_info *ch_info;
2167
2168                 ch_info = iwl3945_get_channel_info(priv,
2169                         priv->band,
2170                         le16_to_cpu(priv->staging39_rxon.channel));
2171
2172                 if (!ch_info || !is_channel_ibss(ch_info)) {
2173                         IWL_ERROR("channel %d not IBSS channel\n",
2174                                   le16_to_cpu(priv->staging39_rxon.channel));
2175                         return -EINVAL;
2176                 }
2177         }
2178
2179         iwl3945_connection_init_rx_config(priv, mode);
2180         memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2181
2182         iwl3945_clear_stations_table(priv);
2183
2184         /* don't commit rxon if rf-kill is on*/
2185         if (!iwl3945_is_ready_rf(priv))
2186                 return -EAGAIN;
2187
2188         cancel_delayed_work(&priv->scan_check);
2189         if (iwl3945_scan_cancel_timeout(priv, 100)) {
2190                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2191                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2192                 return -EAGAIN;
2193         }
2194
2195         iwl3945_commit_rxon(priv);
2196
2197         return 0;
2198 }
2199
2200 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2201                                       struct ieee80211_tx_info *info,
2202                                       struct iwl3945_cmd *cmd,
2203                                       struct sk_buff *skb_frag,
2204                                       int last_frag)
2205 {
2206         struct iwl3945_hw_key *keyinfo =
2207             &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
2208
2209         switch (keyinfo->alg) {
2210         case ALG_CCMP:
2211                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2212                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2213                 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
2214                 break;
2215
2216         case ALG_TKIP:
2217 #if 0
2218                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2219
2220                 if (last_frag)
2221                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2222                                8);
2223                 else
2224                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2225 #endif
2226                 break;
2227
2228         case ALG_WEP:
2229                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2230                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2231
2232                 if (keyinfo->keylen == 13)
2233                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2234
2235                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2236
2237                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2238                              "with key %d\n", info->control.hw_key->hw_key_idx);
2239                 break;
2240
2241         default:
2242                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
2243                 break;
2244         }
2245 }
2246
2247 /*
2248  * handle build REPLY_TX command notification.
2249  */
2250 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
2251                                   struct iwl3945_cmd *cmd,
2252                                   struct ieee80211_tx_info *info,
2253                                   struct ieee80211_hdr *hdr,
2254                                   int is_unicast, u8 std_id)
2255 {
2256         __le16 fc = hdr->frame_control;
2257         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2258         u8 rc_flags = info->control.rates[0].flags;
2259
2260         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2261         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
2262                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2263                 if (ieee80211_is_mgmt(fc))
2264                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2265                 if (ieee80211_is_probe_resp(fc) &&
2266                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2267                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2268         } else {
2269                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2270                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2271         }
2272
2273         cmd->cmd.tx.sta_id = std_id;
2274         if (ieee80211_has_morefrags(fc))
2275                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2276
2277         if (ieee80211_is_data_qos(fc)) {
2278                 u8 *qc = ieee80211_get_qos_ctl(hdr);
2279                 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
2280                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2281         } else {
2282                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2283         }
2284
2285         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
2286                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2287                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2288         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
2289                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2290                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2291         }
2292
2293         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2294                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2295
2296         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2297         if (ieee80211_is_mgmt(fc)) {
2298                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2299                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2300                 else
2301                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2302         } else {
2303                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2304 #ifdef CONFIG_IWL3945_LEDS
2305                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2306 #endif
2307         }
2308
2309         cmd->cmd.tx.driver_txop = 0;
2310         cmd->cmd.tx.tx_flags = tx_flags;
2311         cmd->cmd.tx.next_frame_len = 0;
2312 }
2313
2314 /**
2315  * iwl3945_get_sta_id - Find station's index within station table
2316  */
2317 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2318 {
2319         int sta_id;
2320         u16 fc = le16_to_cpu(hdr->frame_control);
2321
2322         /* If this frame is broadcast or management, use broadcast station id */
2323         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2324             is_multicast_ether_addr(hdr->addr1))
2325                 return priv->hw_params.bcast_sta_id;
2326
2327         switch (priv->iw_mode) {
2328
2329         /* If we are a client station in a BSS network, use the special
2330          * AP station entry (that's the only station we communicate with) */
2331         case NL80211_IFTYPE_STATION:
2332                 return IWL_AP_ID;
2333
2334         /* If we are an AP, then find the station, or use BCAST */
2335         case NL80211_IFTYPE_AP:
2336                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2337                 if (sta_id != IWL_INVALID_STATION)
2338                         return sta_id;
2339                 return priv->hw_params.bcast_sta_id;
2340
2341         /* If this frame is going out to an IBSS network, find the station,
2342          * or create a new station table entry */
2343         case NL80211_IFTYPE_ADHOC: {
2344                 /* Create new station table entry */
2345                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2346                 if (sta_id != IWL_INVALID_STATION)
2347                         return sta_id;
2348
2349                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2350
2351                 if (sta_id != IWL_INVALID_STATION)
2352                         return sta_id;
2353
2354                 IWL_DEBUG_DROP("Station %pM not in station map. "
2355                                "Defaulting to broadcast...\n",
2356                                hdr->addr1);
2357                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2358                 return priv->hw_params.bcast_sta_id;
2359         }
2360         /* If we are in monitor mode, use BCAST. This is required for
2361          * packet injection. */
2362         case NL80211_IFTYPE_MONITOR:
2363                 return priv->hw_params.bcast_sta_id;
2364
2365         default:
2366                 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
2367                 return priv->hw_params.bcast_sta_id;
2368         }
2369 }
2370
2371 /*
2372  * start REPLY_TX command process
2373  */
2374 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
2375 {
2376         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2377         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2378         struct iwl3945_tfd_frame *tfd;
2379         u32 *control_flags;
2380         int txq_id = skb_get_queue_mapping(skb);
2381         struct iwl3945_tx_queue *txq = NULL;
2382         struct iwl_queue *q = NULL;
2383         dma_addr_t phys_addr;
2384         dma_addr_t txcmd_phys;
2385         struct iwl3945_cmd *out_cmd = NULL;
2386         u16 len, idx, len_org, hdr_len;
2387         u8 id;
2388         u8 unicast;
2389         u8 sta_id;
2390         u8 tid = 0;
2391         u16 seq_number = 0;
2392         __le16 fc;
2393         u8 wait_write_ptr = 0;
2394         u8 *qc = NULL;
2395         unsigned long flags;
2396         int rc;
2397
2398         spin_lock_irqsave(&priv->lock, flags);
2399         if (iwl3945_is_rfkill(priv)) {
2400                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2401                 goto drop_unlock;
2402         }
2403
2404         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2405                 IWL_ERROR("ERROR: No TX rate available.\n");
2406                 goto drop_unlock;
2407         }
2408
2409         unicast = !is_multicast_ether_addr(hdr->addr1);
2410         id = 0;
2411
2412         fc = hdr->frame_control;
2413
2414 #ifdef CONFIG_IWL3945_DEBUG
2415         if (ieee80211_is_auth(fc))
2416                 IWL_DEBUG_TX("Sending AUTH frame\n");
2417         else if (ieee80211_is_assoc_req(fc))
2418                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2419         else if (ieee80211_is_reassoc_req(fc))
2420                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2421 #endif
2422
2423         /* drop all data frame if we are not associated */
2424         if (ieee80211_is_data(fc) &&
2425             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2426             (!iwl3945_is_associated(priv) ||
2427              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
2428                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2429                 goto drop_unlock;
2430         }
2431
2432         spin_unlock_irqrestore(&priv->lock, flags);
2433
2434         hdr_len = ieee80211_hdrlen(fc);
2435
2436         /* Find (or create) index into station table for destination station */
2437         sta_id = iwl3945_get_sta_id(priv, hdr);
2438         if (sta_id == IWL_INVALID_STATION) {
2439                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
2440                                hdr->addr1);
2441                 goto drop;
2442         }
2443
2444         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2445
2446         if (ieee80211_is_data_qos(fc)) {
2447                 qc = ieee80211_get_qos_ctl(hdr);
2448                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
2449                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
2450                                 IEEE80211_SCTL_SEQ;
2451                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2452                         (hdr->seq_ctrl &
2453                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2454                 seq_number += 0x10;
2455         }
2456
2457         /* Descriptor for chosen Tx queue */
2458         txq = &priv->txq39[txq_id];
2459         q = &txq->q;
2460
2461         spin_lock_irqsave(&priv->lock, flags);
2462
2463         /* Set up first empty TFD within this queue's circular TFD buffer */
2464         tfd = &txq->bd[q->write_ptr];
2465         memset(tfd, 0, sizeof(*tfd));
2466         control_flags = (u32 *) tfd;
2467         idx = get_cmd_index(q, q->write_ptr, 0);
2468
2469         /* Set up driver data for this TFD */
2470         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2471         txq->txb[q->write_ptr].skb[0] = skb;
2472
2473         /* Init first empty entry in queue's array of Tx/cmd buffers */
2474         out_cmd = &txq->cmd[idx];
2475         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2476         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2477
2478         /*
2479          * Set up the Tx-command (not MAC!) header.
2480          * Store the chosen Tx queue and TFD index within the sequence field;
2481          * after Tx, uCode's Tx response will return this value so driver can
2482          * locate the frame within the tx queue and do post-tx processing.
2483          */
2484         out_cmd->hdr.cmd = REPLY_TX;
2485         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2486                                 INDEX_TO_SEQ(q->write_ptr)));
2487
2488         /* Copy MAC header from skb into command buffer */
2489         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2490
2491         /*
2492          * Use the first empty entry in this queue's command buffer array
2493          * to contain the Tx command and MAC header concatenated together
2494          * (payload data will be in another buffer).
2495          * Size of this varies, due to varying MAC header length.
2496          * If end is not dword aligned, we'll have 2 extra bytes at the end
2497          * of the MAC header (device reads on dword boundaries).
2498          * We'll tell device about this padding later.
2499          */
2500         len = sizeof(struct iwl3945_tx_cmd) +
2501                         sizeof(struct iwl_cmd_header) + hdr_len;
2502
2503         len_org = len;
2504         len = (len + 3) & ~3;
2505
2506         if (len_org != len)
2507                 len_org = 1;
2508         else
2509                 len_org = 0;
2510
2511         /* Physical address of this Tx command's header (not MAC header!),
2512          * within command buffer array. */
2513         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2514                      offsetof(struct iwl3945_cmd, hdr);
2515
2516         /* Add buffer containing Tx command and MAC(!) header to TFD's
2517          * first entry */
2518         iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2519
2520         if (info->control.hw_key)
2521                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2522
2523         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2524          * if any (802.11 null frames have no payload). */
2525         len = skb->len - hdr_len;
2526         if (len) {
2527                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2528                                            len, PCI_DMA_TODEVICE);
2529                 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2530         }
2531
2532         if (!len)
2533                 /* If there is no payload, then we use only one Tx buffer */
2534                 *control_flags = TFD_CTL_COUNT_SET(1);
2535         else
2536                 /* Else use 2 buffers.
2537                  * Tell 3945 about any padding after MAC header */
2538                 *control_flags = TFD_CTL_COUNT_SET(2) |
2539                         TFD_CTL_PAD_SET(U32_PAD(len));
2540
2541         /* Total # bytes to be transmitted */
2542         len = (u16)skb->len;
2543         out_cmd->cmd.tx.len = cpu_to_le16(len);
2544
2545         /* TODO need this for burst mode later on */
2546         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
2547
2548         /* set is_hcca to 0; it probably will never be implemented */
2549         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2550
2551         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2552         out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2553
2554         if (!ieee80211_has_morefrags(hdr->frame_control)) {
2555                 txq->need_update = 1;
2556                 if (qc)
2557                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
2558         } else {
2559                 wait_write_ptr = 1;
2560                 txq->need_update = 0;
2561         }
2562
2563         iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
2564                            sizeof(out_cmd->cmd.tx));
2565
2566         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2567                            ieee80211_hdrlen(fc));
2568
2569         /* Tell device the write index *just past* this latest filled TFD */
2570         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2571         rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2572         spin_unlock_irqrestore(&priv->lock, flags);
2573
2574         if (rc)
2575                 return rc;
2576
2577         if ((iwl_queue_space(q) < q->high_mark)
2578             && priv->mac80211_registered) {
2579                 if (wait_write_ptr) {
2580                         spin_lock_irqsave(&priv->lock, flags);
2581                         txq->need_update = 1;
2582                         iwl3945_tx_queue_update_write_ptr(priv, txq);
2583                         spin_unlock_irqrestore(&priv->lock, flags);
2584                 }
2585
2586                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2587         }
2588
2589         return 0;
2590
2591 drop_unlock:
2592         spin_unlock_irqrestore(&priv->lock, flags);
2593 drop:
2594         return -1;
2595 }
2596
2597 static void iwl3945_set_rate(struct iwl_priv *priv)
2598 {
2599         const struct ieee80211_supported_band *sband = NULL;
2600         struct ieee80211_rate *rate;
2601         int i;
2602
2603         sband = iwl3945_get_band(priv, priv->band);
2604         if (!sband) {
2605                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2606                 return;
2607         }
2608
2609         priv->active_rate = 0;
2610         priv->active_rate_basic = 0;
2611
2612         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2613                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2614
2615         for (i = 0; i < sband->n_bitrates; i++) {
2616                 rate = &sband->bitrates[i];
2617                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2618                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2619                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2620                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2621                         priv->active_rate |= (1 << rate->hw_value);
2622                 }
2623         }
2624
2625         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2626                        priv->active_rate, priv->active_rate_basic);
2627
2628         /*
2629          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2630          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2631          * OFDM
2632          */
2633         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2634                 priv->staging39_rxon.cck_basic_rates =
2635                     ((priv->active_rate_basic &
2636                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2637         else
2638                 priv->staging39_rxon.cck_basic_rates =
2639                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2640
2641         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2642                 priv->staging39_rxon.ofdm_basic_rates =
2643                     ((priv->active_rate_basic &
2644                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2645                       IWL_FIRST_OFDM_RATE) & 0xFF;
2646         else
2647                 priv->staging39_rxon.ofdm_basic_rates =
2648                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2649 }
2650
2651 static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2652 {
2653         unsigned long flags;
2654
2655         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2656                 return;
2657
2658         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2659                           disable_radio ? "OFF" : "ON");
2660
2661         if (disable_radio) {
2662                 iwl3945_scan_cancel(priv);
2663                 /* FIXME: This is a workaround for AP */
2664                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2665                         spin_lock_irqsave(&priv->lock, flags);
2666                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2667                                     CSR_UCODE_SW_BIT_RFKILL);
2668                         spin_unlock_irqrestore(&priv->lock, flags);
2669                         iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2670                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2671                 }
2672                 return;
2673         }
2674
2675         spin_lock_irqsave(&priv->lock, flags);
2676         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2677
2678         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2679         spin_unlock_irqrestore(&priv->lock, flags);
2680
2681         /* wake up ucode */
2682         msleep(10);
2683
2684         spin_lock_irqsave(&priv->lock, flags);
2685         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2686         if (!iwl_grab_nic_access(priv))
2687                 iwl_release_nic_access(priv);
2688         spin_unlock_irqrestore(&priv->lock, flags);
2689
2690         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2691                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2692                                   "disabled by HW switch\n");
2693                 return;
2694         }
2695
2696         if (priv->is_open)
2697                 queue_work(priv->workqueue, &priv->restart);
2698         return;
2699 }
2700
2701 void iwl3945_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2702                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2703 {
2704         u16 fc =
2705             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2706
2707         if (priv->active39_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2708                 return;
2709
2710         if (!(fc & IEEE80211_FCTL_PROTECTED))
2711                 return;
2712
2713         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2714         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2715         case RX_RES_STATUS_SEC_TYPE_TKIP:
2716                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2717                     RX_RES_STATUS_BAD_ICV_MIC)
2718                         stats->flag |= RX_FLAG_MMIC_ERROR;
2719         case RX_RES_STATUS_SEC_TYPE_WEP:
2720         case RX_RES_STATUS_SEC_TYPE_CCMP:
2721                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2722                     RX_RES_STATUS_DECRYPT_OK) {
2723                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2724                         stats->flag |= RX_FLAG_DECRYPTED;
2725                 }
2726                 break;
2727
2728         default:
2729                 break;
2730         }
2731 }
2732
2733 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2734
2735 #include "iwl-spectrum.h"
2736
2737 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2738 #define BEACON_TIME_MASK_HIGH   0xFF000000
2739 #define TIME_UNIT               1024
2740
2741 /*
2742  * extended beacon time format
2743  * time in usec will be changed into a 32-bit value in 8:24 format
2744  * the high 1 byte is the beacon counts
2745  * the lower 3 bytes is the time in usec within one beacon interval
2746  */
2747
2748 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2749 {
2750         u32 quot;
2751         u32 rem;
2752         u32 interval = beacon_interval * 1024;
2753
2754         if (!interval || !usec)
2755                 return 0;
2756
2757         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2758         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2759
2760         return (quot << 24) + rem;
2761 }
2762
2763 /* base is usually what we get from ucode with each received frame,
2764  * the same as HW timer counter counting down
2765  */
2766
2767 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2768 {
2769         u32 base_low = base & BEACON_TIME_MASK_LOW;
2770         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2771         u32 interval = beacon_interval * TIME_UNIT;
2772         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2773             (addon & BEACON_TIME_MASK_HIGH);
2774
2775         if (base_low > addon_low)
2776                 res += base_low - addon_low;
2777         else if (base_low < addon_low) {
2778                 res += interval + base_low - addon_low;
2779                 res += (1 << 24);
2780         } else
2781                 res += (1 << 24);
2782
2783         return cpu_to_le32(res);
2784 }
2785
2786 static int iwl3945_get_measurement(struct iwl_priv *priv,
2787                                struct ieee80211_measurement_params *params,
2788                                u8 type)
2789 {
2790         struct iwl_spectrum_cmd spectrum;
2791         struct iwl_rx_packet *res;
2792         struct iwl3945_host_cmd cmd = {
2793                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2794                 .data = (void *)&spectrum,
2795                 .meta.flags = CMD_WANT_SKB,
2796         };
2797         u32 add_time = le64_to_cpu(params->start_time);
2798         int rc;
2799         int spectrum_resp_status;
2800         int duration = le16_to_cpu(params->duration);
2801
2802         if (iwl3945_is_associated(priv))
2803                 add_time =
2804                     iwl3945_usecs_to_beacons(
2805                         le64_to_cpu(params->start_time) - priv->last_tsf,
2806                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2807
2808         memset(&spectrum, 0, sizeof(spectrum));
2809
2810         spectrum.channel_count = cpu_to_le16(1);
2811         spectrum.flags =
2812             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2813         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2814         cmd.len = sizeof(spectrum);
2815         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2816
2817         if (iwl3945_is_associated(priv))
2818                 spectrum.start_time =
2819                     iwl3945_add_beacon_time(priv->last_beacon_time,
2820                                 add_time,
2821                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2822         else
2823                 spectrum.start_time = 0;
2824
2825         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2826         spectrum.channels[0].channel = params->channel;
2827         spectrum.channels[0].type = type;
2828         if (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK)
2829                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2830                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2831
2832         rc = iwl3945_send_cmd_sync(priv, &cmd);
2833         if (rc)
2834                 return rc;
2835
2836         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2837         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2838                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2839                 rc = -EIO;
2840         }
2841
2842         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2843         switch (spectrum_resp_status) {
2844         case 0:         /* Command will be handled */
2845                 if (res->u.spectrum.id != 0xff) {
2846                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2847                                                 res->u.spectrum.id);
2848                         priv->measurement_status &= ~MEASUREMENT_READY;
2849                 }
2850                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2851                 rc = 0;
2852                 break;
2853
2854         case 1:         /* Command will not be handled */
2855                 rc = -EAGAIN;
2856                 break;
2857         }
2858
2859         dev_kfree_skb_any(cmd.meta.u.skb);
2860
2861         return rc;
2862 }
2863 #endif
2864
2865 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
2866                                struct iwl_rx_mem_buffer *rxb)
2867 {
2868         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2869         struct iwl_alive_resp *palive;
2870         struct delayed_work *pwork;
2871
2872         palive = &pkt->u.alive_frame;
2873
2874         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2875                        "0x%01X 0x%01X\n",
2876                        palive->is_valid, palive->ver_type,
2877                        palive->ver_subtype);
2878
2879         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2880                 IWL_DEBUG_INFO("Initialization Alive received.\n");
2881                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
2882                        sizeof(struct iwl_alive_resp));
2883                 pwork = &priv->init_alive_start;
2884         } else {
2885                 IWL_DEBUG_INFO("Runtime Alive received.\n");
2886                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2887                        sizeof(struct iwl_alive_resp));
2888                 pwork = &priv->alive_start;
2889                 iwl3945_disable_events(priv);
2890         }
2891
2892         /* We delay the ALIVE response by 5ms to
2893          * give the HW RF Kill time to activate... */
2894         if (palive->is_valid == UCODE_VALID_OK)
2895                 queue_delayed_work(priv->workqueue, pwork,
2896                                    msecs_to_jiffies(5));
2897         else
2898                 IWL_WARNING("uCode did not respond OK.\n");
2899 }
2900
2901 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
2902                                  struct iwl_rx_mem_buffer *rxb)
2903 {
2904         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2905
2906         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2907         return;
2908 }
2909
2910 static void iwl3945_rx_reply_error(struct iwl_priv *priv,
2911                                struct iwl_rx_mem_buffer *rxb)
2912 {
2913         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2914
2915         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2916                 "seq 0x%04X ser 0x%08X\n",
2917                 le32_to_cpu(pkt->u.err_resp.error_type),
2918                 get_cmd_string(pkt->u.err_resp.cmd_id),
2919                 pkt->u.err_resp.cmd_id,
2920                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2921                 le32_to_cpu(pkt->u.err_resp.error_info));
2922 }
2923
2924 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2925
2926 static void iwl3945_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2927 {
2928         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2929         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active39_rxon;
2930         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
2931         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2932                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2933         rxon->channel = csa->channel;
2934         priv->staging39_rxon.channel = csa->channel;
2935 }
2936
2937 static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
2938                                           struct iwl_rx_mem_buffer *rxb)
2939 {
2940 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2941         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2942         struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
2943
2944         if (!report->state) {
2945                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2946                           "Spectrum Measure Notification: Start\n");
2947                 return;
2948         }
2949
2950         memcpy(&priv->measure_report, report, sizeof(*report));
2951         priv->measurement_status |= MEASUREMENT_READY;
2952 #endif
2953 }
2954
2955 static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
2956                                   struct iwl_rx_mem_buffer *rxb)
2957 {
2958 #ifdef CONFIG_IWL3945_DEBUG
2959         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2960         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2961         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2962                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2963 #endif
2964 }
2965
2966 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2967                                              struct iwl_rx_mem_buffer *rxb)
2968 {
2969         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2970         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2971                         "notification for %s:\n",
2972                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2973         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
2974                            le32_to_cpu(pkt->len));
2975 }
2976
2977 static void iwl3945_bg_beacon_update(struct work_struct *work)
2978 {
2979         struct iwl_priv *priv =
2980                 container_of(work, struct iwl_priv, beacon_update);
2981         struct sk_buff *beacon;
2982
2983         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2984         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2985
2986         if (!beacon) {
2987                 IWL_ERROR("update beacon failed\n");
2988                 return;
2989         }
2990
2991         mutex_lock(&priv->mutex);
2992         /* new beacon skb is allocated every time; dispose previous.*/
2993         if (priv->ibss_beacon)
2994                 dev_kfree_skb(priv->ibss_beacon);
2995
2996         priv->ibss_beacon = beacon;
2997         mutex_unlock(&priv->mutex);
2998
2999         iwl3945_send_beacon_cmd(priv);
3000 }
3001
3002 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
3003                                 struct iwl_rx_mem_buffer *rxb)
3004 {
3005 #ifdef CONFIG_IWL3945_DEBUG
3006         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3007         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3008         u8 rate = beacon->beacon_notify_hdr.rate;
3009
3010         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3011                 "tsf %d %d rate %d\n",
3012                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3013                 beacon->beacon_notify_hdr.failure_frame,
3014                 le32_to_cpu(beacon->ibss_mgr_status),
3015                 le32_to_cpu(beacon->high_tsf),
3016                 le32_to_cpu(beacon->low_tsf), rate);
3017 #endif
3018
3019         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
3020             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3021                 queue_work(priv->workqueue, &priv->beacon_update);
3022 }
3023
3024 /* Service response to REPLY_SCAN_CMD (0x80) */
3025 static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
3026                               struct iwl_rx_mem_buffer *rxb)
3027 {
3028 #ifdef CONFIG_IWL3945_DEBUG
3029         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3030         struct iwl_scanreq_notification *notif =
3031             (struct iwl_scanreq_notification *)pkt->u.raw;
3032
3033         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3034 #endif
3035 }
3036
3037 /* Service SCAN_START_NOTIFICATION (0x82) */
3038 static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
3039                                     struct iwl_rx_mem_buffer *rxb)
3040 {
3041         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3042         struct iwl_scanstart_notification *notif =
3043             (struct iwl_scanstart_notification *)pkt->u.raw;
3044         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3045         IWL_DEBUG_SCAN("Scan start: "
3046                        "%d [802.11%s] "
3047                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3048                        notif->channel,
3049                        notif->band ? "bg" : "a",
3050                        notif->tsf_high,
3051                        notif->tsf_low, notif->status, notif->beacon_timer);
3052 }
3053
3054 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3055 static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
3056                                       struct iwl_rx_mem_buffer *rxb)
3057 {
3058         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3059         struct iwl_scanresults_notification *notif =
3060             (struct iwl_scanresults_notification *)pkt->u.raw;
3061
3062         IWL_DEBUG_SCAN("Scan ch.res: "
3063                        "%d [802.11%s] "
3064                        "(TSF: 0x%08X:%08X) - %d "
3065                        "elapsed=%lu usec (%dms since last)\n",
3066                        notif->channel,
3067                        notif->band ? "bg" : "a",
3068                        le32_to_cpu(notif->tsf_high),
3069                        le32_to_cpu(notif->tsf_low),
3070                        le32_to_cpu(notif->statistics[0]),
3071                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3072                        jiffies_to_msecs(elapsed_jiffies
3073                                         (priv->last_scan_jiffies, jiffies)));
3074
3075         priv->last_scan_jiffies = jiffies;
3076         priv->next_scan_jiffies = 0;
3077 }
3078
3079 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3080 static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
3081                                        struct iwl_rx_mem_buffer *rxb)
3082 {
3083         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3084         struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3085
3086         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3087                        scan_notif->scanned_channels,
3088                        scan_notif->tsf_low,
3089                        scan_notif->tsf_high, scan_notif->status);
3090
3091         /* The HW is no longer scanning */
3092         clear_bit(STATUS_SCAN_HW, &priv->status);
3093
3094         /* The scan completion notification came in, so kill that timer... */
3095         cancel_delayed_work(&priv->scan_check);
3096
3097         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3098                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3099                                                         "2.4" : "5.2",
3100                        jiffies_to_msecs(elapsed_jiffies
3101                                         (priv->scan_pass_start, jiffies)));
3102
3103         /* Remove this scanned band from the list of pending
3104          * bands to scan, band G precedes A in order of scanning
3105          * as seen in iwl3945_bg_request_scan */
3106         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3107                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3108         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
3109                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
3110
3111         /* If a request to abort was given, or the scan did not succeed
3112          * then we reset the scan state machine and terminate,
3113          * re-queuing another scan if one has been requested */
3114         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3115                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3116                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3117         } else {
3118                 /* If there are more bands on this scan pass reschedule */
3119                 if (priv->scan_bands > 0)
3120                         goto reschedule;
3121         }
3122
3123         priv->last_scan_jiffies = jiffies;
3124         priv->next_scan_jiffies = 0;
3125         IWL_DEBUG_INFO("Setting scan to off\n");
3126
3127         clear_bit(STATUS_SCANNING, &priv->status);
3128
3129         IWL_DEBUG_INFO("Scan took %dms\n",
3130                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3131
3132         queue_work(priv->workqueue, &priv->scan_completed);
3133
3134         return;
3135
3136 reschedule:
3137         priv->scan_pass_start = jiffies;
3138         queue_work(priv->workqueue, &priv->request_scan);
3139 }
3140
3141 /* Handle notification from uCode that card's power state is changing
3142  * due to software, hardware, or critical temperature RFKILL */
3143 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
3144                                     struct iwl_rx_mem_buffer *rxb)
3145 {
3146         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3147         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3148         unsigned long status = priv->status;
3149
3150         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3151                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3152                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3153
3154         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3155                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3156
3157         if (flags & HW_CARD_DISABLED)
3158                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3159         else
3160                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3161
3162
3163         if (flags & SW_CARD_DISABLED)
3164                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3165         else
3166                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3167
3168         iwl3945_scan_cancel(priv);
3169
3170         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3171              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3172             (test_bit(STATUS_RF_KILL_SW, &status) !=
3173              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3174                 queue_work(priv->workqueue, &priv->rf_kill);
3175         else
3176                 wake_up_interruptible(&priv->wait_command_queue);
3177 }
3178
3179 /**
3180  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3181  *
3182  * Setup the RX handlers for each of the reply types sent from the uCode
3183  * to the host.
3184  *
3185  * This function chains into the hardware specific files for them to setup
3186  * any hardware specific handlers as well.
3187  */
3188 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
3189 {
3190         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3191         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3192         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3193         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3194         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3195             iwl3945_rx_spectrum_measure_notif;
3196         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3197         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3198             iwl3945_rx_pm_debug_statistics_notif;
3199         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3200
3201         /*
3202          * The same handler is used for both the REPLY to a discrete
3203          * statistics request from the host as well as for the periodic
3204          * statistics notifications (after received beacons) from the uCode.
3205          */
3206         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3207         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3208
3209         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3210         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3211         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3212             iwl3945_rx_scan_results_notif;
3213         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3214             iwl3945_rx_scan_complete_notif;
3215         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3216
3217         /* Set up hardware specific Rx handlers */
3218         iwl3945_hw_rx_handler_setup(priv);
3219 }
3220
3221 /**
3222  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3223  * When FW advances 'R' index, all entries between old and new 'R' index
3224  * need to be reclaimed.
3225  */
3226 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
3227                                       int txq_id, int index)
3228 {
3229         struct iwl3945_tx_queue *txq = &priv->txq39[txq_id];
3230         struct iwl_queue *q = &txq->q;
3231         int nfreed = 0;
3232
3233         if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3234                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3235                           "is out of range [0-%d] %d %d.\n", txq_id,
3236                           index, q->n_bd, q->write_ptr, q->read_ptr);
3237                 return;
3238         }
3239
3240         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3241                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3242                 if (nfreed > 1) {
3243                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3244                                         q->write_ptr, q->read_ptr);
3245                         queue_work(priv->workqueue, &priv->restart);
3246                         break;
3247                 }
3248                 nfreed++;
3249         }
3250 }
3251
3252
3253 /**
3254  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3255  * @rxb: Rx buffer to reclaim
3256  *
3257  * If an Rx buffer has an async callback associated with it the callback
3258  * will be executed.  The attached skb (if present) will only be freed
3259  * if the callback returns 1
3260  */
3261 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
3262                                 struct iwl_rx_mem_buffer *rxb)
3263 {
3264         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3265         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3266         int txq_id = SEQ_TO_QUEUE(sequence);
3267         int index = SEQ_TO_INDEX(sequence);
3268         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
3269         int cmd_index;
3270         struct iwl3945_cmd *cmd;
3271
3272         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3273
3274         cmd_index = get_cmd_index(&priv->txq39[IWL_CMD_QUEUE_NUM].q, index, huge);
3275         cmd = &priv->txq39[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3276
3277         /* Input error checking is done when commands are added to queue. */
3278         if (cmd->meta.flags & CMD_WANT_SKB) {
3279                 cmd->meta.source->u.skb = rxb->skb;
3280                 rxb->skb = NULL;
3281         } else if (cmd->meta.u.callback &&
3282                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3283                 rxb->skb = NULL;
3284
3285         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
3286
3287         if (!(cmd->meta.flags & CMD_ASYNC)) {
3288                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3289                 wake_up_interruptible(&priv->wait_command_queue);
3290         }
3291 }
3292
3293 /************************** RX-FUNCTIONS ****************************/
3294 /*
3295  * Rx theory of operation
3296  *
3297  * The host allocates 32 DMA target addresses and passes the host address
3298  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3299  * 0 to 31
3300  *
3301  * Rx Queue Indexes
3302  * The host/firmware share two index registers for managing the Rx buffers.
3303  *
3304  * The READ index maps to the first position that the firmware may be writing
3305  * to -- the driver can read up to (but not including) this position and get
3306  * good data.
3307  * The READ index is managed by the firmware once the card is enabled.
3308  *
3309  * The WRITE index maps to the last position the driver has read from -- the
3310  * position preceding WRITE is the last slot the firmware can place a packet.
3311  *
3312  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3313  * WRITE = READ.
3314  *
3315  * During initialization, the host sets up the READ queue position to the first
3316  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3317  *
3318  * When the firmware places a packet in a buffer, it will advance the READ index
3319  * and fire the RX interrupt.  The driver can then query the READ index and
3320  * process as many packets as possible, moving the WRITE index forward as it
3321  * resets the Rx queue buffers with new memory.
3322  *
3323  * The management in the driver is as follows:
3324  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3325  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3326  *   to replenish the iwl->rxq->rx_free.
3327  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3328  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3329  *   'processed' and 'read' driver indexes as well)
3330  * + A received packet is processed and handed to the kernel network stack,
3331  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3332  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3333  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3334  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3335  *   were enough free buffers and RX_STALLED is set it is cleared.
3336  *
3337  *
3338  * Driver sequence:
3339  *
3340  * iwl3945_rx_queue_alloc()   Allocates rx_free
3341  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3342  *                            iwl3945_rx_queue_restock
3343  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3344  *                            queue, updates firmware pointers, and updates
3345  *                            the WRITE index.  If insufficient rx_free buffers
3346  *                            are available, schedules iwl3945_rx_replenish
3347  *
3348  * -- enable interrupts --
3349  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
3350  *                            READ INDEX, detaching the SKB from the pool.
3351  *                            Moves the packet buffer from queue to rx_used.
3352  *                            Calls iwl3945_rx_queue_restock to refill any empty
3353  *                            slots.
3354  * ...
3355  *
3356  */
3357
3358 /**
3359  * iwl3945_rx_queue_space - Return number of free slots available in queue.
3360  */
3361 static int iwl3945_rx_queue_space(const struct iwl_rx_queue *q)
3362 {
3363         int s = q->read - q->write;
3364         if (s <= 0)
3365                 s += RX_QUEUE_SIZE;
3366         /* keep some buffer to not confuse full and empty queue */
3367         s -= 2;
3368         if (s < 0)
3369                 s = 0;
3370         return s;
3371 }
3372
3373 /**
3374  * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3375  */
3376 int iwl3945_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
3377 {
3378         u32 reg = 0;
3379         int rc = 0;
3380         unsigned long flags;
3381
3382         spin_lock_irqsave(&q->lock, flags);
3383
3384         if (q->need_update == 0)
3385                 goto exit_unlock;
3386
3387         /* If power-saving is in use, make sure device is awake */
3388         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3389                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3390
3391                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3392                         iwl_set_bit(priv, CSR_GP_CNTRL,
3393                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3394                         goto exit_unlock;
3395                 }
3396
3397                 rc = iwl_grab_nic_access(priv);
3398                 if (rc)
3399                         goto exit_unlock;
3400
3401                 /* Device expects a multiple of 8 */
3402                 iwl_write_direct32(priv, FH39_RSCSR_CHNL0_WPTR,
3403                                      q->write & ~0x7);
3404                 iwl_release_nic_access(priv);
3405
3406         /* Else device is assumed to be awake */
3407         } else
3408                 /* Device expects a multiple of 8 */
3409                 iwl_write32(priv, FH39_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3410
3411
3412         q->need_update = 0;
3413
3414  exit_unlock:
3415         spin_unlock_irqrestore(&q->lock, flags);
3416         return rc;
3417 }
3418
3419 /**
3420  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3421  */
3422 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
3423                                           dma_addr_t dma_addr)
3424 {
3425         return cpu_to_le32((u32)dma_addr);
3426 }
3427
3428 /**
3429  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3430  *
3431  * If there are slots in the RX queue that need to be restocked,
3432  * and we have free pre-allocated buffers, fill the ranks as much
3433  * as we can, pulling from rx_free.
3434  *
3435  * This moves the 'write' index forward to catch up with 'processed', and
3436  * also updates the memory address in the firmware to reference the new
3437  * target buffer.
3438  */
3439 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
3440 {
3441         struct iwl_rx_queue *rxq = &priv->rxq;
3442         struct list_head *element;
3443         struct iwl_rx_mem_buffer *rxb;
3444         unsigned long flags;
3445         int write, rc;
3446
3447         spin_lock_irqsave(&rxq->lock, flags);
3448         write = rxq->write & ~0x7;
3449         while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3450                 /* Get next free Rx buffer, remove from free list */
3451                 element = rxq->rx_free.next;
3452                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
3453                 list_del(element);
3454
3455                 /* Point to Rx buffer via next RBD in circular buffer */
3456                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
3457                 rxq->queue[rxq->write] = rxb;
3458                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3459                 rxq->free_count--;
3460         }
3461         spin_unlock_irqrestore(&rxq->lock, flags);
3462         /* If the pre-allocated buffer pool is dropping low, schedule to
3463          * refill it */
3464         if (rxq->free_count <= RX_LOW_WATERMARK)
3465                 queue_work(priv->workqueue, &priv->rx_replenish);
3466
3467
3468         /* If we've added more space for the firmware to place data, tell it.
3469          * Increment device's write pointer in multiples of 8. */
3470         if ((write != (rxq->write & ~0x7))
3471             || (abs(rxq->write - rxq->read) > 7)) {
3472                 spin_lock_irqsave(&rxq->lock, flags);
3473                 rxq->need_update = 1;
3474                 spin_unlock_irqrestore(&rxq->lock, flags);
3475                 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3476                 if (rc)
3477                         return rc;
3478         }
3479
3480         return 0;
3481 }
3482
3483 /**
3484  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3485  *
3486  * When moving to rx_free an SKB is allocated for the slot.
3487  *
3488  * Also restock the Rx queue via iwl3945_rx_queue_restock.
3489  * This is called as a scheduled work item (except for during initialization)
3490  */
3491 static void iwl3945_rx_allocate(struct iwl_priv *priv)
3492 {
3493         struct iwl_rx_queue *rxq = &priv->rxq;
3494         struct list_head *element;
3495         struct iwl_rx_mem_buffer *rxb;
3496         unsigned long flags;
3497         spin_lock_irqsave(&rxq->lock, flags);
3498         while (!list_empty(&rxq->rx_used)) {
3499                 element = rxq->rx_used.next;
3500                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
3501
3502                 /* Alloc a new receive buffer */
3503                 rxb->skb =
3504                     alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3505                 if (!rxb->skb) {
3506                         if (net_ratelimit())
3507                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
3508                         /* We don't reschedule replenish work here -- we will
3509                          * call the restock method and if it still needs
3510                          * more buffers it will schedule replenish */
3511                         break;
3512                 }
3513
3514                 /* If radiotap head is required, reserve some headroom here.
3515                  * The physical head count is a variable rx_stats->phy_count.
3516                  * We reserve 4 bytes here. Plus these extra bytes, the
3517                  * headroom of the physical head should be enough for the
3518                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3519                  */
3520                 skb_reserve(rxb->skb, 4);
3521
3522                 priv->alloc_rxb_skb++;
3523                 list_del(element);
3524
3525                 /* Get physical address of RB/SKB */
3526                 rxb->real_dma_addr =
3527                     pci_map_single(priv->pci_dev, rxb->skb->data,
3528                                    IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3529                 list_add_tail(&rxb->list, &rxq->rx_free);
3530                 rxq->free_count++;
3531         }
3532         spin_unlock_irqrestore(&rxq->lock, flags);
3533 }
3534
3535 /*
3536  * this should be called while priv->lock is locked
3537  */
3538 static void __iwl3945_rx_replenish(void *data)
3539 {
3540         struct iwl_priv *priv = data;
3541
3542         iwl3945_rx_allocate(priv);
3543         iwl3945_rx_queue_restock(priv);
3544 }
3545
3546
3547 void iwl3945_rx_replenish(void *data)
3548 {
3549         struct iwl_priv *priv = data;
3550         unsigned long flags;
3551
3552         iwl3945_rx_allocate(priv);
3553
3554         spin_lock_irqsave(&priv->lock, flags);
3555         iwl3945_rx_queue_restock(priv);
3556         spin_unlock_irqrestore(&priv->lock, flags);
3557 }
3558
3559 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3560  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3561  * This free routine walks the list of POOL entries and if SKB is set to
3562  * non NULL it is unmapped and freed
3563  */
3564 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
3565 {
3566         int i;
3567         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3568                 if (rxq->pool[i].skb != NULL) {
3569                         pci_unmap_single(priv->pci_dev,
3570                                          rxq->pool[i].real_dma_addr,
3571                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3572                         dev_kfree_skb(rxq->pool[i].skb);
3573                 }
3574         }
3575
3576         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3577                             rxq->dma_addr);
3578         rxq->bd = NULL;
3579 }
3580
3581 int iwl3945_rx_queue_alloc(struct iwl_priv *priv)
3582 {
3583         struct iwl_rx_queue *rxq = &priv->rxq;
3584         struct pci_dev *dev = priv->pci_dev;
3585         int i;
3586
3587         spin_lock_init(&rxq->lock);
3588         INIT_LIST_HEAD(&rxq->rx_free);
3589         INIT_LIST_HEAD(&rxq->rx_used);
3590
3591         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3592         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3593         if (!rxq->bd)
3594                 return -ENOMEM;
3595
3596         /* Fill the rx_used queue with _all_ of the Rx buffers */
3597         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3598                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3599
3600         /* Set us so that we have processed and used all buffers, but have
3601          * not restocked the Rx queue with fresh buffers */
3602         rxq->read = rxq->write = 0;
3603         rxq->free_count = 0;
3604         rxq->need_update = 0;
3605         return 0;
3606 }
3607
3608 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
3609 {
3610         unsigned long flags;
3611         int i;
3612         spin_lock_irqsave(&rxq->lock, flags);
3613         INIT_LIST_HEAD(&rxq->rx_free);
3614         INIT_LIST_HEAD(&rxq->rx_used);
3615         /* Fill the rx_used queue with _all_ of the Rx buffers */
3616         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3617                 /* In the reset function, these buffers may have been allocated
3618                  * to an SKB, so we need to unmap and free potential storage */
3619                 if (rxq->pool[i].skb != NULL) {
3620                         pci_unmap_single(priv->pci_dev,
3621                                          rxq->pool[i].real_dma_addr,
3622                                          IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3623                         priv->alloc_rxb_skb--;
3624                         dev_kfree_skb(rxq->pool[i].skb);
3625                         rxq->pool[i].skb = NULL;
3626                 }
3627                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3628         }
3629
3630         /* Set us so that we have processed and used all buffers, but have
3631          * not restocked the Rx queue with fresh buffers */
3632         rxq->read = rxq->write = 0;
3633         rxq->free_count = 0;
3634         spin_unlock_irqrestore(&rxq->lock, flags);
3635 }
3636
3637 /* Convert linear signal-to-noise ratio into dB */
3638 static u8 ratio2dB[100] = {
3639 /*       0   1   2   3   4   5   6   7   8   9 */
3640          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3641         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3642         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3643         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3644         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3645         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3646         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3647         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3648         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3649         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3650 };
3651
3652 /* Calculates a relative dB value from a ratio of linear
3653  *   (i.e. not dB) signal levels.
3654  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3655 int iwl3945_calc_db_from_ratio(int sig_ratio)
3656 {
3657         /* 1000:1 or higher just report as 60 dB */
3658         if (sig_ratio >= 1000)
3659                 return 60;
3660
3661         /* 100:1 or higher, divide by 10 and use table,
3662          *   add 20 dB to make up for divide by 10 */
3663         if (sig_ratio >= 100)
3664                 return 20 + (int)ratio2dB[sig_ratio/10];
3665
3666         /* We shouldn't see this */
3667         if (sig_ratio < 1)
3668                 return 0;
3669
3670         /* Use table for ratios 1:1 - 99:1 */
3671         return (int)ratio2dB[sig_ratio];
3672 }
3673
3674 #define PERFECT_RSSI (-20) /* dBm */
3675 #define WORST_RSSI (-95)   /* dBm */
3676 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3677
3678 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3679  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3680  *   about formulas used below. */
3681 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3682 {
3683         int sig_qual;
3684         int degradation = PERFECT_RSSI - rssi_dbm;
3685
3686         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3687          * as indicator; formula is (signal dbm - noise dbm).
3688          * SNR at or above 40 is a great signal (100%).
3689          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3690          * Weakest usable signal is usually 10 - 15 dB SNR. */
3691         if (noise_dbm) {
3692                 if (rssi_dbm - noise_dbm >= 40)
3693                         return 100;
3694                 else if (rssi_dbm < noise_dbm)
3695                         return 0;
3696                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3697
3698         /* Else use just the signal level.
3699          * This formula is a least squares fit of data points collected and
3700          *   compared with a reference system that had a percentage (%) display
3701          *   for signal quality. */
3702         } else
3703                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3704                             (15 * RSSI_RANGE + 62 * degradation)) /
3705                            (RSSI_RANGE * RSSI_RANGE);
3706
3707         if (sig_qual > 100)
3708                 sig_qual = 100;
3709         else if (sig_qual < 1)
3710                 sig_qual = 0;
3711
3712         return sig_qual;
3713 }
3714
3715 /**
3716  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3717  *
3718  * Uses the priv->rx_handlers callback function array to invoke
3719  * the appropriate handlers, including command responses,
3720  * frame-received notifications, and other notifications.
3721  */
3722 static void iwl3945_rx_handle(struct iwl_priv *priv)
3723 {
3724         struct iwl_rx_mem_buffer *rxb;
3725         struct iwl_rx_packet *pkt;
3726         struct iwl_rx_queue *rxq = &priv->rxq;
3727         u32 r, i;
3728         int reclaim;
3729         unsigned long flags;
3730         u8 fill_rx = 0;
3731         u32 count = 8;
3732
3733         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3734          * buffer that the driver may process (last buffer filled by ucode). */
3735         r = iwl3945_hw_get_rx_read(priv);
3736         i = rxq->read;
3737
3738         if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3739                 fill_rx = 1;
3740         /* Rx interrupt, but nothing sent from uCode */
3741         if (i == r)
3742                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3743
3744         while (i != r) {
3745                 rxb = rxq->queue[i];
3746
3747                 /* If an RXB doesn't have a Rx queue slot associated with it,
3748                  * then a bug has been introduced in the queue refilling
3749                  * routines -- catch it here */
3750                 BUG_ON(rxb == NULL);
3751
3752                 rxq->queue[i] = NULL;
3753
3754                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
3755                                             IWL_RX_BUF_SIZE,
3756                                             PCI_DMA_FROMDEVICE);
3757                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3758
3759                 /* Reclaim a command buffer only if this packet is a response
3760                  *   to a (driver-originated) command.
3761                  * If the packet (e.g. Rx frame) originated from uCode,
3762                  *   there is no command buffer to reclaim.
3763                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3764                  *   but apparently a few don't get set; catch them here. */
3765                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3766                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3767                         (pkt->hdr.cmd != REPLY_TX);
3768
3769                 /* Based on type of command response or notification,
3770                  *   handle those that need handling via function in
3771                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
3772                 if (priv->rx_handlers[pkt->hdr.cmd]) {
3773                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3774                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3775                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3776                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3777                 } else {
3778                         /* No handling needed */
3779                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3780                                 "r %d i %d No handler needed for %s, 0x%02x\n",
3781                                 r, i, get_cmd_string(pkt->hdr.cmd),
3782                                 pkt->hdr.cmd);
3783                 }
3784
3785                 if (reclaim) {
3786                         /* Invoke any callbacks, transfer the skb to caller, and
3787                          * fire off the (possibly) blocking iwl3945_send_cmd()
3788                          * as we reclaim the driver command queue */
3789                         if (rxb && rxb->skb)
3790                                 iwl3945_tx_cmd_complete(priv, rxb);
3791                         else
3792                                 IWL_WARNING("Claim null rxb?\n");
3793                 }
3794
3795                 /* For now we just don't re-use anything.  We can tweak this
3796                  * later to try and re-use notification packets and SKBs that
3797                  * fail to Rx correctly */
3798                 if (rxb->skb != NULL) {
3799                         priv->alloc_rxb_skb--;
3800                         dev_kfree_skb_any(rxb->skb);
3801                         rxb->skb = NULL;
3802                 }
3803
3804                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
3805                                  IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3806                 spin_lock_irqsave(&rxq->lock, flags);
3807                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3808                 spin_unlock_irqrestore(&rxq->lock, flags);
3809                 i = (i + 1) & RX_QUEUE_MASK;
3810                 /* If there are a lot of unused frames,
3811                  * restock the Rx queue so ucode won't assert. */
3812                 if (fill_rx) {
3813                         count++;
3814                         if (count >= 8) {
3815                                 priv->rxq.read = i;
3816                                 __iwl3945_rx_replenish(priv);
3817                                 count = 0;
3818                         }
3819                 }
3820         }
3821
3822         /* Backtrack one entry */
3823         priv->rxq.read = i;
3824         iwl3945_rx_queue_restock(priv);
3825 }
3826
3827 /**
3828  * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
3829  */
3830 static int iwl3945_tx_queue_update_write_ptr(struct iwl_priv *priv,
3831                                   struct iwl3945_tx_queue *txq)
3832 {
3833         u32 reg = 0;
3834         int rc = 0;
3835         int txq_id = txq->q.id;
3836
3837         if (txq->need_update == 0)
3838                 return rc;
3839
3840         /* if we're trying to save power */
3841         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3842                 /* wake up nic if it's powered down ...
3843                  * uCode will wake up, and interrupt us again, so next
3844                  * time we'll skip this part. */
3845                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3846
3847                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3848                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3849                         iwl_set_bit(priv, CSR_GP_CNTRL,
3850                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3851                         return rc;
3852                 }
3853
3854                 /* restore this queue's parameters in nic hardware. */
3855                 rc = iwl_grab_nic_access(priv);
3856                 if (rc)
3857                         return rc;
3858                 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3859                                      txq->q.write_ptr | (txq_id << 8));
3860                 iwl_release_nic_access(priv);
3861
3862         /* else not in power-save mode, uCode will never sleep when we're
3863          * trying to tx (during RFKILL, we're not trying to tx). */
3864         } else
3865                 iwl_write32(priv, HBUS_TARG_WRPTR,
3866                             txq->q.write_ptr | (txq_id << 8));
3867
3868         txq->need_update = 0;
3869
3870         return rc;
3871 }
3872
3873 #ifdef CONFIG_IWL3945_DEBUG
3874 static void iwl3945_print_rx_config_cmd(struct iwl_priv *priv,
3875                                         struct iwl3945_rxon_cmd *rxon)
3876 {
3877         IWL_DEBUG_RADIO("RX CONFIG:\n");
3878         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3879         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3880         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3881         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3882                         le32_to_cpu(rxon->filter_flags));
3883         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3884         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3885                         rxon->ofdm_basic_rates);
3886         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3887         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3888         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
3889         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3890 }
3891 #endif
3892
3893 static void iwl3945_enable_interrupts(struct iwl_priv *priv)
3894 {
3895         IWL_DEBUG_ISR("Enabling interrupts\n");
3896         set_bit(STATUS_INT_ENABLED, &priv->status);
3897         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3898 }
3899
3900
3901 /* call this function to flush any scheduled tasklet */
3902 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3903 {
3904         /* wait to make sure we flush pending tasklet*/
3905         synchronize_irq(priv->pci_dev->irq);
3906         tasklet_kill(&priv->irq_tasklet);
3907 }
3908
3909
3910 static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
3911 {
3912         clear_bit(STATUS_INT_ENABLED, &priv->status);
3913
3914         /* disable interrupts from uCode/NIC to host */
3915         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3916
3917         /* acknowledge/clear/reset any interrupts still pending
3918          * from uCode or flow handler (Rx/Tx DMA) */
3919         iwl_write32(priv, CSR_INT, 0xffffffff);
3920         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3921         IWL_DEBUG_ISR("Disabled interrupts\n");
3922 }
3923
3924 static const char *desc_lookup(int i)
3925 {
3926         switch (i) {
3927         case 1:
3928                 return "FAIL";
3929         case 2:
3930                 return "BAD_PARAM";
3931         case 3:
3932                 return "BAD_CHECKSUM";
3933         case 4:
3934                 return "NMI_INTERRUPT";
3935         case 5:
3936                 return "SYSASSERT";
3937         case 6:
3938                 return "FATAL_ERROR";
3939         }
3940
3941         return "UNKNOWN";
3942 }
3943
3944 #define ERROR_START_OFFSET  (1 * sizeof(u32))
3945 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
3946
3947 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
3948 {
3949         u32 i;
3950         u32 desc, time, count, base, data1;
3951         u32 blink1, blink2, ilink1, ilink2;
3952         int rc;
3953
3954         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3955
3956         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3957                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3958                 return;
3959         }
3960
3961         rc = iwl_grab_nic_access(priv);
3962         if (rc) {
3963                 IWL_WARNING("Can not read from adapter at this time.\n");
3964                 return;
3965         }
3966
3967         count = iwl_read_targ_mem(priv, base);
3968
3969         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3970                 IWL_ERROR("Start IWL Error Log Dump:\n");
3971                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
3972         }
3973
3974         IWL_ERROR("Desc       Time       asrtPC  blink2 "
3975                   "ilink1  nmiPC   Line\n");
3976         for (i = ERROR_START_OFFSET;
3977              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
3978              i += ERROR_ELEM_SIZE) {
3979                 desc = iwl_read_targ_mem(priv, base + i);
3980                 time =
3981                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
3982                 blink1 =
3983                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
3984                 blink2 =
3985                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
3986                 ilink1 =
3987                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
3988                 ilink2 =
3989                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
3990                 data1 =
3991                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
3992
3993                 IWL_ERROR
3994                     ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
3995                      desc_lookup(desc), desc, time, blink1, blink2,
3996                      ilink1, ilink2, data1);
3997         }
3998
3999         iwl_release_nic_access(priv);
4000
4001 }
4002
4003 #define EVENT_START_OFFSET  (6 * sizeof(u32))
4004
4005 /**
4006  * iwl3945_print_event_log - Dump error event log to syslog
4007  *
4008  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
4009  */
4010 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
4011                                 u32 num_events, u32 mode)
4012 {
4013         u32 i;
4014         u32 base;       /* SRAM byte address of event log header */
4015         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4016         u32 ptr;        /* SRAM byte address of log data */
4017         u32 ev, time, data; /* event log data */
4018
4019         if (num_events == 0)
4020                 return;
4021
4022         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4023
4024         if (mode == 0)
4025                 event_size = 2 * sizeof(u32);
4026         else
4027                 event_size = 3 * sizeof(u32);
4028
4029         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4030
4031         /* "time" is actually "data" for mode 0 (no timestamp).
4032          * place event id # at far right for easier visual parsing. */
4033         for (i = 0; i < num_events; i++) {
4034                 ev = iwl_read_targ_mem(priv, ptr);
4035                 ptr += sizeof(u32);
4036                 time = iwl_read_targ_mem(priv, ptr);
4037                 ptr += sizeof(u32);
4038                 if (mode == 0)
4039                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4040                 else {
4041                         data = iwl_read_targ_mem(priv, ptr);
4042                         ptr += sizeof(u32);
4043                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4044                 }
4045         }
4046 }
4047
4048 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
4049 {
4050         int rc;
4051         u32 base;       /* SRAM byte address of event log header */
4052         u32 capacity;   /* event log capacity in # entries */
4053         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4054         u32 num_wraps;  /* # times uCode wrapped to top of log */
4055         u32 next_entry; /* index of next entry to be written by uCode */
4056         u32 size;       /* # entries that we'll print */
4057
4058         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4059         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4060                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4061                 return;
4062         }
4063
4064         rc = iwl_grab_nic_access(priv);
4065         if (rc) {
4066                 IWL_WARNING("Can not read from adapter at this time.\n");
4067                 return;
4068         }
4069
4070         /* event log header */
4071         capacity = iwl_read_targ_mem(priv, base);
4072         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4073         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4074         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
4075
4076         size = num_wraps ? capacity : next_entry;
4077
4078         /* bail out if nothing in log */
4079         if (size == 0) {
4080                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4081                 iwl_release_nic_access(priv);
4082                 return;
4083         }
4084
4085         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4086                   size, num_wraps);
4087
4088         /* if uCode has wrapped back to top of log, start at the oldest entry,
4089          * i.e the next one that uCode would fill. */
4090         if (num_wraps)
4091                 iwl3945_print_event_log(priv, next_entry,
4092                                     capacity - next_entry, mode);
4093
4094         /* (then/else) start at top of log */
4095         iwl3945_print_event_log(priv, 0, next_entry, mode);
4096
4097         iwl_release_nic_access(priv);
4098 }
4099
4100 /**
4101  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4102  */
4103 static void iwl3945_irq_handle_error(struct iwl_priv *priv)
4104 {
4105         /* Set the FW error flag -- cleared on iwl3945_down */
4106         set_bit(STATUS_FW_ERROR, &priv->status);
4107
4108         /* Cancel currently queued command. */
4109         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4110
4111 #ifdef CONFIG_IWL3945_DEBUG
4112         if (priv->debug_level & IWL_DL_FW_ERRORS) {
4113                 iwl3945_dump_nic_error_log(priv);
4114                 iwl3945_dump_nic_event_log(priv);
4115                 iwl3945_print_rx_config_cmd(priv, &priv->staging39_rxon);
4116         }
4117 #endif
4118
4119         wake_up_interruptible(&priv->wait_command_queue);
4120
4121         /* Keep the restart process from trying to send host
4122          * commands by clearing the INIT status bit */
4123         clear_bit(STATUS_READY, &priv->status);
4124
4125         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4126                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4127                           "Restarting adapter due to uCode error.\n");
4128
4129                 if (iwl3945_is_associated(priv)) {
4130                         memcpy(&priv->recovery39_rxon, &priv->active39_rxon,
4131                                sizeof(priv->recovery39_rxon));
4132                         priv->error_recovering = 1;
4133                 }
4134                 queue_work(priv->workqueue, &priv->restart);
4135         }
4136 }
4137
4138 static void iwl3945_error_recovery(struct iwl_priv *priv)
4139 {
4140         unsigned long flags;
4141
4142         memcpy(&priv->staging39_rxon, &priv->recovery39_rxon,
4143                sizeof(priv->staging39_rxon));
4144         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4145         iwl3945_commit_rxon(priv);
4146
4147         iwl3945_add_station(priv, priv->bssid, 1, 0);
4148
4149         spin_lock_irqsave(&priv->lock, flags);
4150         priv->assoc_id = le16_to_cpu(priv->staging39_rxon.assoc_id);
4151         priv->error_recovering = 0;
4152         spin_unlock_irqrestore(&priv->lock, flags);
4153 }
4154
4155 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
4156 {
4157         u32 inta, handled = 0;
4158         u32 inta_fh;
4159         unsigned long flags;
4160 #ifdef CONFIG_IWL3945_DEBUG
4161         u32 inta_mask;
4162 #endif
4163
4164         spin_lock_irqsave(&priv->lock, flags);
4165
4166         /* Ack/clear/reset pending uCode interrupts.
4167          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4168          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4169         inta = iwl_read32(priv, CSR_INT);
4170         iwl_write32(priv, CSR_INT, inta);
4171
4172         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4173          * Any new interrupts that happen after this, either while we're
4174          * in this tasklet, or later, will show up in next ISR/tasklet. */
4175         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4176         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4177
4178 #ifdef CONFIG_IWL3945_DEBUG
4179         if (priv->debug_level & IWL_DL_ISR) {
4180                 /* just for debug */
4181                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4182                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4183                               inta, inta_mask, inta_fh);
4184         }
4185 #endif
4186
4187         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4188          * atomic, make sure that inta covers all the interrupts that
4189          * we've discovered, even if FH interrupt came in just after
4190          * reading CSR_INT. */
4191         if (inta_fh & CSR39_FH_INT_RX_MASK)
4192                 inta |= CSR_INT_BIT_FH_RX;
4193         if (inta_fh & CSR39_FH_INT_TX_MASK)
4194                 inta |= CSR_INT_BIT_FH_TX;
4195
4196         /* Now service all interrupt bits discovered above. */
4197         if (inta & CSR_INT_BIT_HW_ERR) {
4198                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4199
4200                 /* Tell the device to stop sending interrupts */
4201                 iwl3945_disable_interrupts(priv);
4202
4203                 iwl3945_irq_handle_error(priv);
4204
4205                 handled |= CSR_INT_BIT_HW_ERR;
4206
4207                 spin_unlock_irqrestore(&priv->lock, flags);
4208
4209                 return;
4210         }
4211
4212 #ifdef CONFIG_IWL3945_DEBUG
4213         if (priv->debug_level & (IWL_DL_ISR)) {
4214                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4215                 if (inta & CSR_INT_BIT_SCD)
4216                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4217                                       "the frame/frames.\n");
4218
4219                 /* Alive notification via Rx interrupt will do the real work */
4220                 if (inta & CSR_INT_BIT_ALIVE)
4221                         IWL_DEBUG_ISR("Alive interrupt\n");
4222         }
4223 #endif
4224         /* Safely ignore these bits for debug checks below */
4225         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4226
4227         /* Error detected by uCode */
4228         if (inta & CSR_INT_BIT_SW_ERR) {
4229                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4230                           inta);
4231                 iwl3945_irq_handle_error(priv);
4232                 handled |= CSR_INT_BIT_SW_ERR;
4233         }
4234
4235         /* uCode wakes up after power-down sleep */
4236         if (inta & CSR_INT_BIT_WAKEUP) {
4237                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4238                 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4239                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[0]);
4240                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[1]);
4241                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[2]);
4242                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[3]);
4243                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[4]);
4244                 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[5]);
4245
4246                 handled |= CSR_INT_BIT_WAKEUP;
4247         }
4248
4249         /* All uCode command responses, including Tx command responses,
4250          * Rx "responses" (frame-received notification), and other
4251          * notifications from uCode come through here*/
4252         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4253                 iwl3945_rx_handle(priv);
4254                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4255         }
4256
4257         if (inta & CSR_INT_BIT_FH_TX) {
4258                 IWL_DEBUG_ISR("Tx interrupt\n");
4259
4260                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4261                 if (!iwl_grab_nic_access(priv)) {
4262                         iwl_write_direct32(priv, FH39_TCSR_CREDIT
4263                                              (FH39_SRVC_CHNL), 0x0);
4264                         iwl_release_nic_access(priv);
4265                 }
4266                 handled |= CSR_INT_BIT_FH_TX;
4267         }
4268
4269         if (inta & ~handled)
4270                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4271
4272         if (inta & ~CSR_INI_SET_MASK) {
4273                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4274                          inta & ~CSR_INI_SET_MASK);
4275                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4276         }
4277
4278         /* Re-enable all interrupts */
4279         /* only Re-enable if disabled by irq */
4280         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4281                 iwl3945_enable_interrupts(priv);
4282
4283 #ifdef CONFIG_IWL3945_DEBUG
4284         if (priv->debug_level & (IWL_DL_ISR)) {
4285                 inta = iwl_read32(priv, CSR_INT);
4286                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4287                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4288                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4289                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4290         }
4291 #endif
4292         spin_unlock_irqrestore(&priv->lock, flags);
4293 }
4294
4295 static irqreturn_t iwl3945_isr(int irq, void *data)
4296 {
4297         struct iwl_priv *priv = data;
4298         u32 inta, inta_mask;
4299         u32 inta_fh;
4300         if (!priv)
4301                 return IRQ_NONE;
4302
4303         spin_lock(&priv->lock);
4304
4305         /* Disable (but don't clear!) interrupts here to avoid
4306          *    back-to-back ISRs and sporadic interrupts from our NIC.
4307          * If we have something to service, the tasklet will re-enable ints.
4308          * If we *don't* have something, we'll re-enable before leaving here. */
4309         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
4310         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4311
4312         /* Discover which interrupts are active/pending */
4313         inta = iwl_read32(priv, CSR_INT);
4314         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4315
4316         /* Ignore interrupt if there's nothing in NIC to service.
4317          * This may be due to IRQ shared with another device,
4318          * or due to sporadic interrupts thrown from our NIC. */
4319         if (!inta && !inta_fh) {
4320                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4321                 goto none;
4322         }
4323
4324         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4325                 /* Hardware disappeared */
4326                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
4327                 goto unplugged;
4328         }
4329
4330         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4331                       inta, inta_mask, inta_fh);
4332
4333         inta &= ~CSR_INT_BIT_SCD;
4334
4335         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4336         if (likely(inta || inta_fh))
4337                 tasklet_schedule(&priv->irq_tasklet);
4338 unplugged:
4339         spin_unlock(&priv->lock);
4340
4341         return IRQ_HANDLED;
4342
4343  none:
4344         /* re-enable interrupts here since we don't have anything to service. */
4345         /* only Re-enable if disabled by irq */
4346         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4347                 iwl3945_enable_interrupts(priv);
4348         spin_unlock(&priv->lock);
4349         return IRQ_NONE;
4350 }
4351
4352 /************************** EEPROM BANDS ****************************
4353  *
4354  * The iwl3945_eeprom_band definitions below provide the mapping from the
4355  * EEPROM contents to the specific channel number supported for each
4356  * band.
4357  *
4358  * For example, iwl3945_priv->eeprom39.band_3_channels[4] from the band_3
4359  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4360  * The specific geography and calibration information for that channel
4361  * is contained in the eeprom map itself.
4362  *
4363  * During init, we copy the eeprom information and channel map
4364  * information into priv->channel_info_24/52 and priv->channel_map_24/52
4365  *
4366  * channel_map_24/52 provides the index in the channel_info array for a
4367  * given channel.  We have to have two separate maps as there is channel
4368  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4369  * band_2
4370  *
4371  * A value of 0xff stored in the channel_map indicates that the channel
4372  * is not supported by the hardware at all.
4373  *
4374  * A value of 0xfe in the channel_map indicates that the channel is not
4375  * valid for Tx with the current hardware.  This means that
4376  * while the system can tune and receive on a given channel, it may not
4377  * be able to associate or transmit any frames on that
4378  * channel.  There is no corresponding channel information for that
4379  * entry.
4380  *
4381  *********************************************************************/
4382
4383 /* 2.4 GHz */
4384 static const u8 iwl3945_eeprom_band_1[14] = {
4385         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4386 };
4387
4388 /* 5.2 GHz bands */
4389 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
4390         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4391 };
4392
4393 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
4394         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4395 };
4396
4397 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
4398         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4399 };
4400
4401 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
4402         145, 149, 153, 157, 161, 165
4403 };
4404
4405 static void iwl3945_init_band_reference(const struct iwl_priv *priv, int band,
4406                                     int *eeprom_ch_count,
4407                                     const struct iwl_eeprom_channel
4408                                     **eeprom_ch_info,
4409                                     const u8 **eeprom_ch_index)
4410 {
4411         switch (band) {
4412         case 1:         /* 2.4GHz band */
4413                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4414                 *eeprom_ch_info = priv->eeprom39.band_1_channels;
4415                 *eeprom_ch_index = iwl3945_eeprom_band_1;
4416                 break;
4417         case 2:         /* 4.9GHz band */
4418                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4419                 *eeprom_ch_info = priv->eeprom39.band_2_channels;
4420                 *eeprom_ch_index = iwl3945_eeprom_band_2;
4421                 break;
4422         case 3:         /* 5.2GHz band */
4423                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4424                 *eeprom_ch_info = priv->eeprom39.band_3_channels;
4425                 *eeprom_ch_index = iwl3945_eeprom_band_3;
4426                 break;
4427         case 4:         /* 5.5GHz band */
4428                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4429                 *eeprom_ch_info = priv->eeprom39.band_4_channels;
4430                 *eeprom_ch_index = iwl3945_eeprom_band_4;
4431                 break;
4432         case 5:         /* 5.7GHz band */
4433                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4434                 *eeprom_ch_info = priv->eeprom39.band_5_channels;
4435                 *eeprom_ch_index = iwl3945_eeprom_band_5;
4436                 break;
4437         default:
4438                 BUG();
4439                 return;
4440         }
4441 }
4442
4443 /**
4444  * iwl3945_get_channel_info - Find driver's private channel info
4445  *
4446  * Based on band and channel number.
4447  */
4448 const struct iwl_channel_info *
4449 iwl3945_get_channel_info(const struct iwl_priv *priv,
4450                          enum ieee80211_band band, u16 channel)
4451 {
4452         int i;
4453
4454         switch (band) {
4455         case IEEE80211_BAND_5GHZ:
4456                 for (i = 14; i < priv->channel_count; i++) {
4457                         if (priv->channel_info[i].channel == channel)
4458                                 return &priv->channel_info[i];
4459                 }
4460                 break;
4461
4462         case IEEE80211_BAND_2GHZ:
4463                 if (channel >= 1 && channel <= 14)
4464                         return &priv->channel_info[channel - 1];
4465                 break;
4466         case IEEE80211_NUM_BANDS:
4467                 WARN_ON(1);
4468         }
4469
4470         return NULL;
4471 }
4472
4473 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4474                             ? # x " " : "")
4475
4476 /**
4477  * iwl3945_init_channel_map - Set up driver's info for all possible channels
4478  */
4479 static int iwl3945_init_channel_map(struct iwl_priv *priv)
4480 {
4481         int eeprom_ch_count = 0;
4482         const u8 *eeprom_ch_index = NULL;
4483         const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
4484         int band, ch;
4485         struct iwl_channel_info *ch_info;
4486
4487         if (priv->channel_count) {
4488                 IWL_DEBUG_INFO("Channel map already initialized.\n");
4489                 return 0;
4490         }
4491
4492         if (priv->eeprom39.version < 0x2f) {
4493                 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
4494                             priv->eeprom39.version);
4495                 return -EINVAL;
4496         }
4497
4498         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4499
4500         priv->channel_count =
4501             ARRAY_SIZE(iwl3945_eeprom_band_1) +
4502             ARRAY_SIZE(iwl3945_eeprom_band_2) +
4503             ARRAY_SIZE(iwl3945_eeprom_band_3) +
4504             ARRAY_SIZE(iwl3945_eeprom_band_4) +
4505             ARRAY_SIZE(iwl3945_eeprom_band_5);
4506
4507         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4508
4509         priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
4510                                      priv->channel_count, GFP_KERNEL);
4511         if (!priv->channel_info) {
4512                 IWL_ERROR("Could not allocate channel_info\n");
4513                 priv->channel_count = 0;
4514                 return -ENOMEM;
4515         }
4516
4517         ch_info = priv->channel_info;
4518
4519         /* Loop through the 5 EEPROM bands adding them in order to the
4520          * channel map we maintain (that contains additional information than
4521          * what just in the EEPROM) */
4522         for (band = 1; band <= 5; band++) {
4523
4524                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4525                                         &eeprom_ch_info, &eeprom_ch_index);
4526
4527                 /* Loop through each band adding each of the channels */
4528                 for (ch = 0; ch < eeprom_ch_count; ch++) {
4529                         ch_info->channel = eeprom_ch_index[ch];
4530                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4531                             IEEE80211_BAND_5GHZ;
4532
4533                         /* permanently store EEPROM's channel regulatory flags
4534                          *   and max power in channel info database. */
4535                         ch_info->eeprom = eeprom_ch_info[ch];
4536
4537                         /* Copy the run-time flags so they are there even on
4538                          * invalid channels */
4539                         ch_info->flags = eeprom_ch_info[ch].flags;
4540
4541                         if (!(is_channel_valid(ch_info))) {
4542                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4543                                                "No traffic\n",
4544                                                ch_info->channel,
4545                                                ch_info->flags,
4546                                                is_channel_a_band(ch_info) ?
4547                                                "5.2" : "2.4");
4548                                 ch_info++;
4549                                 continue;
4550                         }
4551
4552                         /* Initialize regulatory-based run-time data */
4553                         ch_info->max_power_avg = ch_info->curr_txpow =
4554                             eeprom_ch_info[ch].max_power_avg;
4555                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4556                         ch_info->min_power = 0;
4557
4558                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
4559                                        " %ddBm): Ad-Hoc %ssupported\n",
4560                                        ch_info->channel,
4561                                        is_channel_a_band(ch_info) ?
4562                                        "5.2" : "2.4",
4563                                        CHECK_AND_PRINT(VALID),
4564                                        CHECK_AND_PRINT(IBSS),
4565                                        CHECK_AND_PRINT(ACTIVE),
4566                                        CHECK_AND_PRINT(RADAR),
4567                                        CHECK_AND_PRINT(WIDE),
4568                                        CHECK_AND_PRINT(DFS),
4569                                        eeprom_ch_info[ch].flags,
4570                                        eeprom_ch_info[ch].max_power_avg,
4571                                        ((eeprom_ch_info[ch].
4572                                          flags & EEPROM_CHANNEL_IBSS)
4573                                         && !(eeprom_ch_info[ch].
4574                                              flags & EEPROM_CHANNEL_RADAR))
4575                                        ? "" : "not ");
4576
4577                         /* Set the user_txpower_limit to the highest power
4578                          * supported by any channel */
4579                         if (eeprom_ch_info[ch].max_power_avg >
4580                             priv->user_txpower_limit)
4581                                 priv->user_txpower_limit =
4582                                     eeprom_ch_info[ch].max_power_avg;
4583
4584                         ch_info++;
4585                 }
4586         }
4587
4588         /* Set up txpower settings in driver for all channels */
4589         if (iwl3945_txpower_set_from_eeprom(priv))
4590                 return -EIO;
4591
4592         return 0;
4593 }
4594
4595 /*
4596  * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4597  */
4598 static void iwl3945_free_channel_map(struct iwl_priv *priv)
4599 {
4600         kfree(priv->channel_info);
4601         priv->channel_count = 0;
4602 }
4603
4604 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4605  * sending probe req.  This should be set long enough to hear probe responses
4606  * from more than one AP.  */
4607 #define IWL_ACTIVE_DWELL_TIME_24    (30)        /* all times in msec */
4608 #define IWL_ACTIVE_DWELL_TIME_52    (20)
4609
4610 #define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
4611 #define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
4612
4613 /* For faster active scanning, scan will move to the next channel if fewer than
4614  * PLCP_QUIET_THRESH packets are heard on this channel within
4615  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4616  * time if it's a quiet channel (nothing responded to our probe, and there's
4617  * no other traffic).
4618  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4619 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4620 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(10)  /* msec */
4621
4622 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4623  * Must be set longer than active dwell time.
4624  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4625 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4626 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4627 #define IWL_PASSIVE_DWELL_BASE      (100)
4628 #define IWL_CHANNEL_TUNE_TIME       5
4629
4630 #define IWL_SCAN_PROBE_MASK(n)   (BIT(n) | (BIT(n) - BIT(1)))
4631
4632 static inline u16 iwl3945_get_active_dwell_time(struct iwl_priv *priv,
4633                                                 enum ieee80211_band band,
4634                                                 u8 n_probes)
4635 {
4636         if (band == IEEE80211_BAND_5GHZ)
4637                 return IWL_ACTIVE_DWELL_TIME_52 +
4638                         IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
4639         else
4640                 return IWL_ACTIVE_DWELL_TIME_24 +
4641                         IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
4642 }
4643
4644 static u16 iwl3945_get_passive_dwell_time(struct iwl_priv *priv,
4645                                           enum ieee80211_band band)
4646 {
4647         u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4648             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4649             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4650
4651         if (iwl3945_is_associated(priv)) {
4652                 /* If we're associated, we clamp the maximum passive
4653                  * dwell time to be 98% of the beacon interval (minus
4654                  * 2 * channel tune time) */
4655                 passive = priv->beacon_int;
4656                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4657                         passive = IWL_PASSIVE_DWELL_BASE;
4658                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4659         }
4660
4661         return passive;
4662 }
4663
4664 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
4665                                          enum ieee80211_band band,
4666                                      u8 is_active, u8 n_probes,
4667                                      struct iwl3945_scan_channel *scan_ch)
4668 {
4669         const struct ieee80211_channel *channels = NULL;
4670         const struct ieee80211_supported_band *sband;
4671         const struct iwl_channel_info *ch_info;
4672         u16 passive_dwell = 0;
4673         u16 active_dwell = 0;
4674         int added, i;
4675
4676         sband = iwl3945_get_band(priv, band);
4677         if (!sband)
4678                 return 0;
4679
4680         channels = sband->channels;
4681
4682         active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4683         passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4684
4685         if (passive_dwell <= active_dwell)
4686                 passive_dwell = active_dwell + 1;
4687
4688         for (i = 0, added = 0; i < sband->n_channels; i++) {
4689                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4690                         continue;
4691
4692                 scan_ch->channel = channels[i].hw_value;
4693
4694                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4695                 if (!is_channel_valid(ch_info)) {
4696                         IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4697                                        scan_ch->channel);
4698                         continue;
4699                 }
4700
4701                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4702                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4703                 /* If passive , set up for auto-switch
4704                  *  and use long active_dwell time.
4705                  */
4706                 if (!is_active || is_channel_passive(ch_info) ||
4707                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
4708                         scan_ch->type = 0;      /* passive */
4709                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
4710                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
4711                 } else {
4712                         scan_ch->type = 1;      /* active */
4713                 }
4714
4715                 /* Set direct probe bits. These may be used both for active
4716                  * scan channels (probes gets sent right away),
4717                  * or for passive channels (probes get se sent only after
4718                  * hearing clear Rx packet).*/
4719                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
4720                         if (n_probes)
4721                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4722                 } else {
4723                         /* uCode v1 does not allow setting direct probe bits on
4724                          * passive channel. */
4725                         if ((scan_ch->type & 1) && n_probes)
4726                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4727                 }
4728
4729                 /* Set txpower levels to defaults */
4730                 scan_ch->tpc.dsp_atten = 110;
4731                 /* scan_pwr_info->tpc.dsp_atten; */
4732
4733                 /*scan_pwr_info->tpc.tx_gain; */
4734                 if (band == IEEE80211_BAND_5GHZ)
4735                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4736                 else {
4737                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4738                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4739                          * power level:
4740                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4741                          */
4742                 }
4743
4744                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4745                                scan_ch->channel,
4746                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4747                                (scan_ch->type & 1) ?
4748                                active_dwell : passive_dwell);
4749
4750                 scan_ch++;
4751                 added++;
4752         }
4753
4754         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4755         return added;
4756 }
4757
4758 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
4759                               struct ieee80211_rate *rates)
4760 {
4761         int i;
4762
4763         for (i = 0; i < IWL_RATE_COUNT; i++) {
4764                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4765                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4766                 rates[i].hw_value_short = i;
4767                 rates[i].flags = 0;
4768                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4769                         /*
4770                          * If CCK != 1M then set short preamble rate flag.
4771                          */
4772                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4773                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4774                 }
4775         }
4776 }
4777
4778 /**
4779  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
4780  */
4781 static int iwl3945_init_geos(struct iwl_priv *priv)
4782 {
4783         struct iwl_channel_info *ch;
4784         struct ieee80211_supported_band *sband;
4785         struct ieee80211_channel *channels;
4786         struct ieee80211_channel *geo_ch;
4787         struct ieee80211_rate *rates;
4788         int i = 0;
4789
4790         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4791             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4792                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4793                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4794                 return 0;
4795         }
4796
4797         channels = kzalloc(sizeof(struct ieee80211_channel) *
4798                            priv->channel_count, GFP_KERNEL);
4799         if (!channels)
4800                 return -ENOMEM;
4801
4802         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4803                         GFP_KERNEL);
4804         if (!rates) {
4805                 kfree(channels);
4806                 return -ENOMEM;
4807         }
4808
4809         /* 5.2GHz channels start after the 2.4GHz channels */
4810         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4811         sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4812         /* just OFDM */
4813         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4814         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4815
4816         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4817         sband->channels = channels;
4818         /* OFDM & CCK */
4819         sband->bitrates = rates;
4820         sband->n_bitrates = IWL_RATE_COUNT;
4821
4822         priv->ieee_channels = channels;
4823         priv->ieee_rates = rates;
4824
4825         iwl3945_init_hw_rates(priv, rates);
4826
4827         for (i = 0;  i < priv->channel_count; i++) {
4828                 ch = &priv->channel_info[i];
4829
4830                 /* FIXME: might be removed if scan is OK*/
4831                 if (!is_channel_valid(ch))
4832                         continue;
4833
4834                 if (is_channel_a_band(ch))
4835                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4836                 else
4837                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4838
4839                 geo_ch = &sband->channels[sband->n_channels++];
4840
4841                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4842                 geo_ch->max_power = ch->max_power_avg;
4843                 geo_ch->max_antenna_gain = 0xff;
4844                 geo_ch->hw_value = ch->channel;
4845
4846                 if (is_channel_valid(ch)) {
4847                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4848                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4849
4850                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4851                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4852
4853                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4854                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4855
4856                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4857                                 priv->max_channel_txpower_limit =
4858                                     ch->max_power_avg;
4859                 } else {
4860                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4861                 }
4862
4863                 /* Save flags for reg domain usage */
4864                 geo_ch->orig_flags = geo_ch->flags;
4865
4866                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4867                                 ch->channel, geo_ch->center_freq,
4868                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4869                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4870                                 "restricted" : "valid",
4871                                  geo_ch->flags);
4872         }
4873
4874         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4875              priv->cfg->sku & IWL_SKU_A) {
4876                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
4877                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
4878                         priv->pci_dev->device, priv->pci_dev->subsystem_device);
4879                  priv->cfg->sku &= ~IWL_SKU_A;
4880         }
4881
4882         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4883                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4884                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4885
4886         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4887                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4888                         &priv->bands[IEEE80211_BAND_2GHZ];
4889         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4890                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4891                         &priv->bands[IEEE80211_BAND_5GHZ];
4892
4893         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4894
4895         return 0;
4896 }
4897
4898 /*
4899  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
4900  */
4901 static void iwl3945_free_geos(struct iwl_priv *priv)
4902 {
4903         kfree(priv->ieee_channels);
4904         kfree(priv->ieee_rates);
4905         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4906 }
4907
4908 /******************************************************************************
4909  *
4910  * uCode download functions
4911  *
4912  ******************************************************************************/
4913
4914 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
4915 {
4916         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4917         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4918         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4919         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4920         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4921         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4922 }
4923
4924 /**
4925  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
4926  *     looking at all data.
4927  */
4928 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
4929 {
4930         u32 val;
4931         u32 save_len = len;
4932         int rc = 0;
4933         u32 errcnt;
4934
4935         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4936
4937         rc = iwl_grab_nic_access(priv);
4938         if (rc)
4939                 return rc;
4940
4941         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4942                                IWL39_RTC_INST_LOWER_BOUND);
4943
4944         errcnt = 0;
4945         for (; len > 0; len -= sizeof(u32), image++) {
4946                 /* read data comes through single port, auto-incr addr */
4947                 /* NOTE: Use the debugless read so we don't flood kernel log
4948                  * if IWL_DL_IO is set */
4949                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4950                 if (val != le32_to_cpu(*image)) {
4951                         IWL_ERROR("uCode INST section is invalid at "
4952                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4953                                   save_len - len, val, le32_to_cpu(*image));
4954                         rc = -EIO;
4955                         errcnt++;
4956                         if (errcnt >= 20)
4957                                 break;
4958                 }
4959         }
4960
4961         iwl_release_nic_access(priv);
4962
4963         if (!errcnt)
4964                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
4965
4966         return rc;
4967 }
4968
4969
4970 /**
4971  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
4972  *   using sample data 100 bytes apart.  If these sample points are good,
4973  *   it's a pretty good bet that everything between them is good, too.
4974  */
4975 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4976 {
4977         u32 val;
4978         int rc = 0;
4979         u32 errcnt = 0;
4980         u32 i;
4981
4982         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4983
4984         rc = iwl_grab_nic_access(priv);
4985         if (rc)
4986                 return rc;
4987
4988         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4989                 /* read data comes through single port, auto-incr addr */
4990                 /* NOTE: Use the debugless read so we don't flood kernel log
4991                  * if IWL_DL_IO is set */
4992                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4993                         i + IWL39_RTC_INST_LOWER_BOUND);
4994                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4995                 if (val != le32_to_cpu(*image)) {
4996 #if 0 /* Enable this if you want to see details */
4997                         IWL_ERROR("uCode INST section is invalid at "
4998                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4999                                   i, val, *image);
5000 #endif
5001                         rc = -EIO;
5002                         errcnt++;
5003                         if (errcnt >= 3)
5004                                 break;
5005                 }
5006         }
5007
5008         iwl_release_nic_access(priv);
5009
5010         return rc;
5011 }
5012
5013
5014 /**
5015  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5016  *    and verify its contents
5017  */
5018 static int iwl3945_verify_ucode(struct iwl_priv *priv)
5019 {
5020         __le32 *image;
5021         u32 len;
5022         int rc = 0;
5023
5024         /* Try bootstrap */
5025         image = (__le32 *)priv->ucode_boot.v_addr;
5026         len = priv->ucode_boot.len;
5027         rc = iwl3945_verify_inst_sparse(priv, image, len);
5028         if (rc == 0) {
5029                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5030                 return 0;
5031         }
5032
5033         /* Try initialize */
5034         image = (__le32 *)priv->ucode_init.v_addr;
5035         len = priv->ucode_init.len;
5036         rc = iwl3945_verify_inst_sparse(priv, image, len);
5037         if (rc == 0) {
5038                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5039                 return 0;
5040         }
5041
5042         /* Try runtime/protocol */
5043         image = (__le32 *)priv->ucode_code.v_addr;
5044         len = priv->ucode_code.len;
5045         rc = iwl3945_verify_inst_sparse(priv, image, len);
5046         if (rc == 0) {
5047                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5048                 return 0;
5049         }
5050
5051         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5052
5053         /* Since nothing seems to match, show first several data entries in
5054          * instruction SRAM, so maybe visual inspection will give a clue.
5055          * Selection of bootstrap image (vs. other images) is arbitrary. */
5056         image = (__le32 *)priv->ucode_boot.v_addr;
5057         len = priv->ucode_boot.len;
5058         rc = iwl3945_verify_inst_full(priv, image, len);
5059
5060         return rc;
5061 }
5062
5063
5064 /* check contents of special bootstrap uCode SRAM */
5065 static int iwl3945_verify_bsm(struct iwl_priv *priv)
5066 {
5067         __le32 *image = priv->ucode_boot.v_addr;
5068         u32 len = priv->ucode_boot.len;
5069         u32 reg;
5070         u32 val;
5071
5072         IWL_DEBUG_INFO("Begin verify bsm\n");
5073
5074         /* verify BSM SRAM contents */
5075         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
5076         for (reg = BSM_SRAM_LOWER_BOUND;
5077              reg < BSM_SRAM_LOWER_BOUND + len;
5078              reg += sizeof(u32), image++) {
5079                 val = iwl_read_prph(priv, reg);
5080                 if (val != le32_to_cpu(*image)) {
5081                         IWL_ERROR("BSM uCode verification failed at "
5082                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5083                                   BSM_SRAM_LOWER_BOUND,
5084                                   reg - BSM_SRAM_LOWER_BOUND, len,
5085                                   val, le32_to_cpu(*image));
5086                         return -EIO;
5087                 }
5088         }
5089
5090         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5091
5092         return 0;
5093 }
5094
5095 /**
5096  * iwl3945_load_bsm - Load bootstrap instructions
5097  *
5098  * BSM operation:
5099  *
5100  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5101  * in special SRAM that does not power down during RFKILL.  When powering back
5102  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5103  * the bootstrap program into the on-board processor, and starts it.
5104  *
5105  * The bootstrap program loads (via DMA) instructions and data for a new
5106  * program from host DRAM locations indicated by the host driver in the
5107  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5108  * automatically.
5109  *
5110  * When initializing the NIC, the host driver points the BSM to the
5111  * "initialize" uCode image.  This uCode sets up some internal data, then
5112  * notifies host via "initialize alive" that it is complete.
5113  *
5114  * The host then replaces the BSM_DRAM_* pointer values to point to the
5115  * normal runtime uCode instructions and a backup uCode data cache buffer
5116  * (filled initially with starting data values for the on-board processor),
5117  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5118  * which begins normal operation.
5119  *
5120  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5121  * the backup data cache in DRAM before SRAM is powered down.
5122  *
5123  * When powering back up, the BSM loads the bootstrap program.  This reloads
5124  * the runtime uCode instructions and the backup data cache into SRAM,
5125  * and re-launches the runtime uCode from where it left off.
5126  */
5127 static int iwl3945_load_bsm(struct iwl_priv *priv)
5128 {
5129         __le32 *image = priv->ucode_boot.v_addr;
5130         u32 len = priv->ucode_boot.len;
5131         dma_addr_t pinst;
5132         dma_addr_t pdata;
5133         u32 inst_len;
5134         u32 data_len;
5135         int rc;
5136         int i;
5137         u32 done;
5138         u32 reg_offset;
5139
5140         IWL_DEBUG_INFO("Begin load bsm\n");
5141
5142         /* make sure bootstrap program is no larger than BSM's SRAM size */
5143         if (len > IWL39_MAX_BSM_SIZE)
5144                 return -EINVAL;
5145
5146         /* Tell bootstrap uCode where to find the "Initialize" uCode
5147          *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5148          * NOTE:  iwl3945_initialize_alive_start() will replace these values,
5149          *        after the "initialize" uCode has run, to point to
5150          *        runtime/protocol instructions and backup data cache. */
5151         pinst = priv->ucode_init.p_addr;
5152         pdata = priv->ucode_init_data.p_addr;
5153         inst_len = priv->ucode_init.len;
5154         data_len = priv->ucode_init_data.len;
5155
5156         rc = iwl_grab_nic_access(priv);
5157         if (rc)
5158                 return rc;
5159
5160         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5161         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5162         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5163         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5164
5165         /* Fill BSM memory with bootstrap instructions */
5166         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5167              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5168              reg_offset += sizeof(u32), image++)
5169                 _iwl_write_prph(priv, reg_offset,
5170                                           le32_to_cpu(*image));
5171
5172         rc = iwl3945_verify_bsm(priv);
5173         if (rc) {
5174                 iwl_release_nic_access(priv);
5175                 return rc;
5176         }
5177
5178         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5179         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5180         iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
5181                                  IWL39_RTC_INST_LOWER_BOUND);
5182         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5183
5184         /* Load bootstrap code into instruction SRAM now,
5185          *   to prepare to load "initialize" uCode */
5186         iwl_write_prph(priv, BSM_WR_CTRL_REG,
5187                 BSM_WR_CTRL_REG_BIT_START);
5188
5189         /* Wait for load of bootstrap uCode to finish */
5190         for (i = 0; i < 100; i++) {
5191                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
5192                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5193                         break;
5194                 udelay(10);
5195         }
5196         if (i < 100)
5197                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5198         else {
5199                 IWL_ERROR("BSM write did not complete!\n");
5200                 return -EIO;
5201         }
5202
5203         /* Enable future boot loads whenever power management unit triggers it
5204          *   (e.g. when powering back up after power-save shutdown) */
5205         iwl_write_prph(priv, BSM_WR_CTRL_REG,
5206                 BSM_WR_CTRL_REG_BIT_START_EN);
5207
5208         iwl_release_nic_access(priv);
5209
5210         return 0;
5211 }
5212
5213 static void iwl3945_nic_start(struct iwl_priv *priv)
5214 {
5215         /* Remove all resets to allow NIC to operate */
5216         iwl_write32(priv, CSR_RESET, 0);
5217 }
5218
5219 /**
5220  * iwl3945_read_ucode - Read uCode images from disk file.
5221  *
5222  * Copy into buffers for card to fetch via bus-mastering
5223  */
5224 static int iwl3945_read_ucode(struct iwl_priv *priv)
5225 {
5226         struct iwl_ucode *ucode;
5227         int ret = -EINVAL, index;
5228         const struct firmware *ucode_raw;
5229         /* firmware file name contains uCode/driver compatibility version */
5230         const char *name_pre = priv->cfg->fw_name_pre;
5231         const unsigned int api_max = priv->cfg->ucode_api_max;
5232         const unsigned int api_min = priv->cfg->ucode_api_min;
5233         char buf[25];
5234         u8 *src;
5235         size_t len;
5236         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
5237
5238         /* Ask kernel firmware_class module to get the boot firmware off disk.
5239          * request_firmware() is synchronous, file is in memory on return. */
5240         for (index = api_max; index >= api_min; index--) {
5241                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
5242                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
5243                 if (ret < 0) {
5244                         IWL_ERROR("%s firmware file req failed: Reason %d\n",
5245                                   buf, ret);
5246                         if (ret == -ENOENT)
5247                                 continue;
5248                         else
5249                                 goto error;
5250                 } else {
5251                         if (index < api_max)
5252                                 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
5253                                           buf, api_max);
5254                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5255                                        buf, ucode_raw->size);
5256                         break;
5257                 }
5258         }
5259
5260         if (ret < 0)
5261                 goto error;
5262
5263         /* Make sure that we got at least our header! */
5264         if (ucode_raw->size < sizeof(*ucode)) {
5265                 IWL_ERROR("File size way too small!\n");
5266                 ret = -EINVAL;
5267                 goto err_release;
5268         }
5269
5270         /* Data from ucode file:  header followed by uCode images */
5271         ucode = (void *)ucode_raw->data;
5272
5273         priv->ucode_ver = le32_to_cpu(ucode->ver);
5274         api_ver = IWL_UCODE_API(priv->ucode_ver);
5275         inst_size = le32_to_cpu(ucode->inst_size);
5276         data_size = le32_to_cpu(ucode->data_size);
5277         init_size = le32_to_cpu(ucode->init_size);
5278         init_data_size = le32_to_cpu(ucode->init_data_size);
5279         boot_size = le32_to_cpu(ucode->boot_size);
5280
5281         /* api_ver should match the api version forming part of the
5282          * firmware filename ... but we don't check for that and only rely
5283          * on the API version read from firware header from here on forward */
5284
5285         if (api_ver < api_min || api_ver > api_max) {
5286                 IWL_ERROR("Driver unable to support your firmware API. "
5287                           "Driver supports v%u, firmware is v%u.\n",
5288                           api_max, api_ver);
5289                 priv->ucode_ver = 0;
5290                 ret = -EINVAL;
5291                 goto err_release;
5292         }
5293         if (api_ver != api_max)
5294                 IWL_ERROR("Firmware has old API version. Expected %u, "
5295                           "got %u. New firmware can be obtained "
5296                           "from http://www.intellinuxwireless.org.\n",
5297                           api_max, api_ver);
5298
5299         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
5300                 IWL_UCODE_MAJOR(priv->ucode_ver),
5301                 IWL_UCODE_MINOR(priv->ucode_ver),
5302                 IWL_UCODE_API(priv->ucode_ver),
5303                 IWL_UCODE_SERIAL(priv->ucode_ver));
5304
5305         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
5306                        priv->ucode_ver);
5307         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5308         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5309         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5310         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5311         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5312
5313
5314         /* Verify size of file vs. image size info in file's header */
5315         if (ucode_raw->size < sizeof(*ucode) +
5316                 inst_size + data_size + init_size +
5317                 init_data_size + boot_size) {
5318
5319                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5320                                (int)ucode_raw->size);
5321                 ret = -EINVAL;
5322                 goto err_release;
5323         }
5324
5325         /* Verify that uCode images will fit in card's SRAM */
5326         if (inst_size > IWL39_MAX_INST_SIZE) {
5327                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5328                                inst_size);
5329                 ret = -EINVAL;
5330                 goto err_release;
5331         }
5332
5333         if (data_size > IWL39_MAX_DATA_SIZE) {
5334                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5335                                data_size);
5336                 ret = -EINVAL;
5337                 goto err_release;
5338         }
5339         if (init_size > IWL39_MAX_INST_SIZE) {
5340                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5341                                 init_size);
5342                 ret = -EINVAL;
5343                 goto err_release;
5344         }
5345         if (init_data_size > IWL39_MAX_DATA_SIZE) {
5346                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5347                                 init_data_size);
5348                 ret = -EINVAL;
5349                 goto err_release;
5350         }
5351         if (boot_size > IWL39_MAX_BSM_SIZE) {
5352                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5353                                 boot_size);
5354                 ret = -EINVAL;
5355                 goto err_release;
5356         }
5357
5358         /* Allocate ucode buffers for card's bus-master loading ... */
5359
5360         /* Runtime instructions and 2 copies of data:
5361          * 1) unmodified from disk
5362          * 2) backup cache for save/restore during power-downs */
5363         priv->ucode_code.len = inst_size;
5364         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5365
5366         priv->ucode_data.len = data_size;
5367         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5368
5369         priv->ucode_data_backup.len = data_size;
5370         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5371
5372         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5373             !priv->ucode_data_backup.v_addr)
5374                 goto err_pci_alloc;
5375
5376         /* Initialization instructions and data */
5377         if (init_size && init_data_size) {
5378                 priv->ucode_init.len = init_size;
5379                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5380
5381                 priv->ucode_init_data.len = init_data_size;
5382                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5383
5384                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5385                         goto err_pci_alloc;
5386         }
5387
5388         /* Bootstrap (instructions only, no data) */
5389         if (boot_size) {
5390                 priv->ucode_boot.len = boot_size;
5391                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5392
5393                 if (!priv->ucode_boot.v_addr)
5394                         goto err_pci_alloc;
5395         }
5396
5397         /* Copy images into buffers for card's bus-master reads ... */
5398
5399         /* Runtime instructions (first block of data in file) */
5400         src = &ucode->data[0];
5401         len = priv->ucode_code.len;
5402         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5403         memcpy(priv->ucode_code.v_addr, src, len);
5404         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5405                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5406
5407         /* Runtime data (2nd block)
5408          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
5409         src = &ucode->data[inst_size];
5410         len = priv->ucode_data.len;
5411         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5412         memcpy(priv->ucode_data.v_addr, src, len);
5413         memcpy(priv->ucode_data_backup.v_addr, src, len);
5414
5415         /* Initialization instructions (3rd block) */
5416         if (init_size) {
5417                 src = &ucode->data[inst_size + data_size];
5418                 len = priv->ucode_init.len;
5419                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5420                                len);
5421                 memcpy(priv->ucode_init.v_addr, src, len);
5422         }
5423
5424         /* Initialization data (4th block) */
5425         if (init_data_size) {
5426                 src = &ucode->data[inst_size + data_size + init_size];
5427                 len = priv->ucode_init_data.len;
5428                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5429                                (int)len);
5430                 memcpy(priv->ucode_init_data.v_addr, src, len);
5431         }
5432
5433         /* Bootstrap instructions (5th block) */
5434         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5435         len = priv->ucode_boot.len;
5436         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5437                        (int)len);
5438         memcpy(priv->ucode_boot.v_addr, src, len);
5439
5440         /* We have our copies now, allow OS release its copies */
5441         release_firmware(ucode_raw);
5442         return 0;
5443
5444  err_pci_alloc:
5445         IWL_ERROR("failed to allocate pci memory\n");
5446         ret = -ENOMEM;
5447         iwl3945_dealloc_ucode_pci(priv);
5448
5449  err_release:
5450         release_firmware(ucode_raw);
5451
5452  error:
5453         return ret;
5454 }
5455
5456
5457 /**
5458  * iwl3945_set_ucode_ptrs - Set uCode address location
5459  *
5460  * Tell initialization uCode where to find runtime uCode.
5461  *
5462  * BSM registers initially contain pointers to initialization uCode.
5463  * We need to replace them to load runtime uCode inst and data,
5464  * and to save runtime data when powering down.
5465  */
5466 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
5467 {
5468         dma_addr_t pinst;
5469         dma_addr_t pdata;
5470         int rc = 0;
5471         unsigned long flags;
5472
5473         /* bits 31:0 for 3945 */
5474         pinst = priv->ucode_code.p_addr;
5475         pdata = priv->ucode_data_backup.p_addr;
5476
5477         spin_lock_irqsave(&priv->lock, flags);
5478         rc = iwl_grab_nic_access(priv);
5479         if (rc) {
5480                 spin_unlock_irqrestore(&priv->lock, flags);
5481                 return rc;
5482         }
5483
5484         /* Tell bootstrap uCode where to find image to load */
5485         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5486         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5487         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5488                                  priv->ucode_data.len);
5489
5490         /* Inst byte count must be last to set up, bit 31 signals uCode
5491          *   that all new ptr/size info is in place */
5492         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5493                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5494
5495         iwl_release_nic_access(priv);
5496
5497         spin_unlock_irqrestore(&priv->lock, flags);
5498
5499         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5500
5501         return rc;
5502 }
5503
5504 /**
5505  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5506  *
5507  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5508  *
5509  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5510  */
5511 static void iwl3945_init_alive_start(struct iwl_priv *priv)
5512 {
5513         /* Check alive response for "valid" sign from uCode */
5514         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5515                 /* We had an error bringing up the hardware, so take it
5516                  * all the way back down so we can try again */
5517                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5518                 goto restart;
5519         }
5520
5521         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5522          * This is a paranoid check, because we would not have gotten the
5523          * "initialize" alive if code weren't properly loaded.  */
5524         if (iwl3945_verify_ucode(priv)) {
5525                 /* Runtime instruction load was bad;
5526                  * take it all the way back down so we can try again */
5527                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5528                 goto restart;
5529         }
5530
5531         /* Send pointers to protocol/runtime uCode image ... init code will
5532          * load and launch runtime uCode, which will send us another "Alive"
5533          * notification. */
5534         IWL_DEBUG_INFO("Initialization Alive received.\n");
5535         if (iwl3945_set_ucode_ptrs(priv)) {
5536                 /* Runtime instruction load won't happen;
5537                  * take it all the way back down so we can try again */
5538                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5539                 goto restart;
5540         }
5541         return;
5542
5543  restart:
5544         queue_work(priv->workqueue, &priv->restart);
5545 }
5546
5547
5548 /* temporary */
5549 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
5550                                      struct sk_buff *skb);
5551
5552 /**
5553  * iwl3945_alive_start - called after REPLY_ALIVE notification received
5554  *                   from protocol/runtime uCode (initialization uCode's
5555  *                   Alive gets handled by iwl3945_init_alive_start()).
5556  */
5557 static void iwl3945_alive_start(struct iwl_priv *priv)
5558 {
5559         int rc = 0;
5560         int thermal_spin = 0;
5561         u32 rfkill;
5562
5563         IWL_DEBUG_INFO("Runtime Alive received.\n");
5564
5565         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5566                 /* We had an error bringing up the hardware, so take it
5567                  * all the way back down so we can try again */
5568                 IWL_DEBUG_INFO("Alive failed.\n");
5569                 goto restart;
5570         }
5571
5572         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5573          * This is a paranoid check, because we would not have gotten the
5574          * "runtime" alive if code weren't properly loaded.  */
5575         if (iwl3945_verify_ucode(priv)) {
5576                 /* Runtime instruction load was bad;
5577                  * take it all the way back down so we can try again */
5578                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5579                 goto restart;
5580         }
5581
5582         iwl3945_clear_stations_table(priv);
5583
5584         rc = iwl_grab_nic_access(priv);
5585         if (rc) {
5586                 IWL_WARNING("Can not read RFKILL status from adapter\n");
5587                 return;
5588         }
5589
5590         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
5591         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5592         iwl_release_nic_access(priv);
5593
5594         if (rfkill & 0x1) {
5595                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5596                 /* if RFKILL is not on, then wait for thermal
5597                  * sensor in adapter to kick in */
5598                 while (iwl3945_hw_get_temperature(priv) == 0) {
5599                         thermal_spin++;
5600                         udelay(10);
5601                 }
5602
5603                 if (thermal_spin)
5604                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5605                                        thermal_spin * 10);
5606         } else
5607                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5608
5609         /* After the ALIVE response, we can send commands to 3945 uCode */
5610         set_bit(STATUS_ALIVE, &priv->status);
5611
5612         /* Clear out the uCode error bit if it is set */
5613         clear_bit(STATUS_FW_ERROR, &priv->status);
5614
5615         if (iwl3945_is_rfkill(priv))
5616                 return;
5617
5618         ieee80211_wake_queues(priv->hw);
5619
5620         priv->active_rate = priv->rates_mask;
5621         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5622
5623         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5624
5625         if (iwl3945_is_associated(priv)) {
5626                 struct iwl3945_rxon_cmd *active_rxon =
5627                                 (struct iwl3945_rxon_cmd *)(&priv->active39_rxon);
5628
5629                 memcpy(&priv->staging39_rxon, &priv->active39_rxon,
5630                        sizeof(priv->staging39_rxon));
5631                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5632         } else {
5633                 /* Initialize our rx_config data */
5634                 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
5635                 memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5636         }
5637
5638         /* Configure Bluetooth device coexistence support */
5639         iwl3945_send_bt_config(priv);
5640
5641         /* Configure the adapter for unassociated operation */
5642         iwl3945_commit_rxon(priv);
5643
5644         iwl3945_reg_txpower_periodic(priv);
5645
5646         iwl3945_led_register(priv);
5647
5648         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5649         set_bit(STATUS_READY, &priv->status);
5650         wake_up_interruptible(&priv->wait_command_queue);
5651
5652         if (priv->error_recovering)
5653                 iwl3945_error_recovery(priv);
5654
5655         /* reassociate for ADHOC mode */
5656         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
5657                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
5658                                                                 priv->vif);
5659                 if (beacon)
5660                         iwl3945_mac_beacon_update(priv->hw, beacon);
5661         }
5662
5663         return;
5664
5665  restart:
5666         queue_work(priv->workqueue, &priv->restart);
5667 }
5668
5669 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
5670
5671 static void __iwl3945_down(struct iwl_priv *priv)
5672 {
5673         unsigned long flags;
5674         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5675         struct ieee80211_conf *conf = NULL;
5676
5677         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5678
5679         conf = ieee80211_get_hw_conf(priv->hw);
5680
5681         if (!exit_pending)
5682                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5683
5684         iwl3945_led_unregister(priv);
5685         iwl3945_clear_stations_table(priv);
5686
5687         /* Unblock any waiting calls */
5688         wake_up_interruptible_all(&priv->wait_command_queue);
5689
5690         /* Wipe out the EXIT_PENDING status bit if we are not actually
5691          * exiting the module */
5692         if (!exit_pending)
5693                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5694
5695         /* stop and reset the on-board processor */
5696         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5697
5698         /* tell the device to stop sending interrupts */
5699         spin_lock_irqsave(&priv->lock, flags);
5700         iwl3945_disable_interrupts(priv);
5701         spin_unlock_irqrestore(&priv->lock, flags);
5702         iwl_synchronize_irq(priv);
5703
5704         if (priv->mac80211_registered)
5705                 ieee80211_stop_queues(priv->hw);
5706
5707         /* If we have not previously called iwl3945_init() then
5708          * clear all bits but the RF Kill and SUSPEND bits and return */
5709         if (!iwl3945_is_init(priv)) {
5710                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5711                                         STATUS_RF_KILL_HW |
5712                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5713                                         STATUS_RF_KILL_SW |
5714                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5715                                         STATUS_GEO_CONFIGURED |
5716                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5717                                         STATUS_IN_SUSPEND |
5718                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5719                                         STATUS_EXIT_PENDING;
5720                 goto exit;
5721         }
5722
5723         /* ...otherwise clear out all the status bits but the RF Kill and
5724          * SUSPEND bits and continue taking the NIC down. */
5725         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5726                                 STATUS_RF_KILL_HW |
5727                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5728                                 STATUS_RF_KILL_SW |
5729                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5730                                 STATUS_GEO_CONFIGURED |
5731                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5732                                 STATUS_IN_SUSPEND |
5733                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5734                                 STATUS_FW_ERROR |
5735                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5736                                 STATUS_EXIT_PENDING;
5737
5738         spin_lock_irqsave(&priv->lock, flags);
5739         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5740         spin_unlock_irqrestore(&priv->lock, flags);
5741
5742         iwl3945_hw_txq_ctx_stop(priv);
5743         iwl3945_hw_rxq_stop(priv);
5744
5745         spin_lock_irqsave(&priv->lock, flags);
5746         if (!iwl_grab_nic_access(priv)) {
5747                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5748                                          APMG_CLK_VAL_DMA_CLK_RQT);
5749                 iwl_release_nic_access(priv);
5750         }
5751         spin_unlock_irqrestore(&priv->lock, flags);
5752
5753         udelay(5);
5754
5755         iwl3945_hw_nic_stop_master(priv);
5756         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5757         iwl3945_hw_nic_reset(priv);
5758
5759  exit:
5760         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
5761
5762         if (priv->ibss_beacon)
5763                 dev_kfree_skb(priv->ibss_beacon);
5764         priv->ibss_beacon = NULL;
5765
5766         /* clear out any free frames */
5767         iwl3945_clear_free_frames(priv);
5768 }
5769
5770 static void iwl3945_down(struct iwl_priv *priv)
5771 {
5772         mutex_lock(&priv->mutex);
5773         __iwl3945_down(priv);
5774         mutex_unlock(&priv->mutex);
5775
5776         iwl3945_cancel_deferred_work(priv);
5777 }
5778
5779 #define MAX_HW_RESTARTS 5
5780
5781 static int __iwl3945_up(struct iwl_priv *priv)
5782 {
5783         int rc, i;
5784
5785         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5786                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5787                 return -EIO;
5788         }
5789
5790         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5791                 IWL_WARNING("Radio disabled by SW RF kill (module "
5792                             "parameter)\n");
5793                 return -ENODEV;
5794         }
5795
5796         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5797                 IWL_ERROR("ucode not available for device bring up\n");
5798                 return -EIO;
5799         }
5800
5801         /* If platform's RF_KILL switch is NOT set to KILL */
5802         if (iwl_read32(priv, CSR_GP_CNTRL) &
5803                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5804                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5805         else {
5806                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5807                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5808                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5809                         return -ENODEV;
5810                 }
5811         }
5812
5813         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5814
5815         rc = iwl3945_hw_nic_init(priv);
5816         if (rc) {
5817                 IWL_ERROR("Unable to int nic\n");
5818                 return rc;
5819         }
5820
5821         /* make sure rfkill handshake bits are cleared */
5822         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5823         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5824                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5825
5826         /* clear (again), then enable host interrupts */
5827         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5828         iwl3945_enable_interrupts(priv);
5829
5830         /* really make sure rfkill handshake bits are cleared */
5831         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5832         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5833
5834         /* Copy original ucode data image from disk into backup cache.
5835          * This will be used to initialize the on-board processor's
5836          * data SRAM for a clean start when the runtime program first loads. */
5837         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5838                priv->ucode_data.len);
5839
5840         /* We return success when we resume from suspend and rf_kill is on. */
5841         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5842                 return 0;
5843
5844         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5845
5846                 iwl3945_clear_stations_table(priv);
5847
5848                 /* load bootstrap state machine,
5849                  * load bootstrap program into processor's memory,
5850                  * prepare to load the "initialize" uCode */
5851                 rc = iwl3945_load_bsm(priv);
5852
5853                 if (rc) {
5854                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5855                         continue;
5856                 }
5857
5858                 /* start card; "initialize" will load runtime ucode */
5859                 iwl3945_nic_start(priv);
5860
5861                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5862
5863                 return 0;
5864         }
5865
5866         set_bit(STATUS_EXIT_PENDING, &priv->status);
5867         __iwl3945_down(priv);
5868         clear_bit(STATUS_EXIT_PENDING, &priv->status);
5869
5870         /* tried to restart and config the device for as long as our
5871          * patience could withstand */
5872         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5873         return -EIO;
5874 }
5875
5876
5877 /*****************************************************************************
5878  *
5879  * Workqueue callbacks
5880  *
5881  *****************************************************************************/
5882
5883 static void iwl3945_bg_init_alive_start(struct work_struct *data)
5884 {
5885         struct iwl_priv *priv =
5886             container_of(data, struct iwl_priv, init_alive_start.work);
5887
5888         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5889                 return;
5890
5891         mutex_lock(&priv->mutex);
5892         iwl3945_init_alive_start(priv);
5893         mutex_unlock(&priv->mutex);
5894 }
5895
5896 static void iwl3945_bg_alive_start(struct work_struct *data)
5897 {
5898         struct iwl_priv *priv =
5899             container_of(data, struct iwl_priv, alive_start.work);
5900
5901         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5902                 return;
5903
5904         mutex_lock(&priv->mutex);
5905         iwl3945_alive_start(priv);
5906         mutex_unlock(&priv->mutex);
5907 }
5908
5909 static void iwl3945_bg_rf_kill(struct work_struct *work)
5910 {
5911         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5912
5913         wake_up_interruptible(&priv->wait_command_queue);
5914
5915         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5916                 return;
5917
5918         mutex_lock(&priv->mutex);
5919
5920         if (!iwl3945_is_rfkill(priv)) {
5921                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5922                           "HW and/or SW RF Kill no longer active, restarting "
5923                           "device\n");
5924                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5925                         queue_work(priv->workqueue, &priv->restart);
5926         } else {
5927
5928                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5929                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5930                                           "disabled by SW switch\n");
5931                 else
5932                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5933                                     "Kill switch must be turned off for "
5934                                     "wireless networking to work.\n");
5935         }
5936
5937         mutex_unlock(&priv->mutex);
5938         iwl3945_rfkill_set_hw_state(priv);
5939 }
5940
5941 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5942
5943 static void iwl3945_bg_scan_check(struct work_struct *data)
5944 {
5945         struct iwl_priv *priv =
5946             container_of(data, struct iwl_priv, scan_check.work);
5947
5948         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5949                 return;
5950
5951         mutex_lock(&priv->mutex);
5952         if (test_bit(STATUS_SCANNING, &priv->status) ||
5953             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5954                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5955                           "Scan completion watchdog resetting adapter (%dms)\n",
5956                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5957
5958                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5959                         iwl3945_send_scan_abort(priv);
5960         }
5961         mutex_unlock(&priv->mutex);
5962 }
5963
5964 static void iwl3945_bg_request_scan(struct work_struct *data)
5965 {
5966         struct iwl_priv *priv =
5967             container_of(data, struct iwl_priv, request_scan);
5968         struct iwl3945_host_cmd cmd = {
5969                 .id = REPLY_SCAN_CMD,
5970                 .len = sizeof(struct iwl3945_scan_cmd),
5971                 .meta.flags = CMD_SIZE_HUGE,
5972         };
5973         int rc = 0;
5974         struct iwl3945_scan_cmd *scan;
5975         struct ieee80211_conf *conf = NULL;
5976         u8 n_probes = 2;
5977         enum ieee80211_band band;
5978         DECLARE_SSID_BUF(ssid);
5979
5980         conf = ieee80211_get_hw_conf(priv->hw);
5981
5982         mutex_lock(&priv->mutex);
5983
5984         if (!iwl3945_is_ready(priv)) {
5985                 IWL_WARNING("request scan called when driver not ready.\n");
5986                 goto done;
5987         }
5988
5989         /* Make sure the scan wasn't canceled before this queued work
5990          * was given the chance to run... */
5991         if (!test_bit(STATUS_SCANNING, &priv->status))
5992                 goto done;
5993
5994         /* This should never be called or scheduled if there is currently
5995          * a scan active in the hardware. */
5996         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5997                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5998                                "Ignoring second request.\n");
5999                 rc = -EIO;
6000                 goto done;
6001         }
6002
6003         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6004                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6005                 goto done;
6006         }
6007
6008         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6009                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6010                 goto done;
6011         }
6012
6013         if (iwl3945_is_rfkill(priv)) {
6014                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6015                 goto done;
6016         }
6017
6018         if (!test_bit(STATUS_READY, &priv->status)) {
6019                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6020                 goto done;
6021         }
6022
6023         if (!priv->scan_bands) {
6024                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6025                 goto done;
6026         }
6027
6028         if (!priv->scan39) {
6029                 priv->scan39 = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6030                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6031                 if (!priv->scan39) {
6032                         rc = -ENOMEM;
6033                         goto done;
6034                 }
6035         }
6036         scan = priv->scan39;
6037         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6038
6039         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6040         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6041
6042         if (iwl3945_is_associated(priv)) {
6043                 u16 interval = 0;
6044                 u32 extra;
6045                 u32 suspend_time = 100;
6046                 u32 scan_suspend_time = 100;
6047                 unsigned long flags;
6048
6049                 IWL_DEBUG_INFO("Scanning while associated...\n");
6050
6051                 spin_lock_irqsave(&priv->lock, flags);
6052                 interval = priv->beacon_int;
6053                 spin_unlock_irqrestore(&priv->lock, flags);
6054
6055                 scan->suspend_time = 0;
6056                 scan->max_out_time = cpu_to_le32(200 * 1024);
6057                 if (!interval)
6058                         interval = suspend_time;
6059                 /*
6060                  * suspend time format:
6061                  *  0-19: beacon interval in usec (time before exec.)
6062                  * 20-23: 0
6063                  * 24-31: number of beacons (suspend between channels)
6064                  */
6065
6066                 extra = (suspend_time / interval) << 24;
6067                 scan_suspend_time = 0xFF0FFFFF &
6068                     (extra | ((suspend_time % interval) * 1024));
6069
6070                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6071                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6072                                scan_suspend_time, interval);
6073         }
6074
6075         /* We should add the ability for user to lock to PASSIVE ONLY */
6076         if (priv->one_direct_scan) {
6077                 IWL_DEBUG_SCAN
6078                     ("Kicking off one direct scan for '%s'\n",
6079                      print_ssid(ssid, priv->direct_ssid,
6080                                 priv->direct_ssid_len));
6081                 scan->direct_scan[0].id = WLAN_EID_SSID;
6082                 scan->direct_scan[0].len = priv->direct_ssid_len;
6083                 memcpy(scan->direct_scan[0].ssid,
6084                        priv->direct_ssid, priv->direct_ssid_len);
6085                 n_probes++;
6086         } else
6087                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
6088
6089         /* We don't build a direct scan probe request; the uCode will do
6090          * that based on the direct_mask added to each channel entry */
6091         scan->tx_cmd.len = cpu_to_le16(
6092                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6093                         IWL_MAX_SCAN_SIZE - sizeof(*scan)));
6094         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6095         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
6096         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6097
6098         /* flags + rate selection */
6099
6100         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
6101                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6102                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6103                 scan->good_CRC_th = 0;
6104                 band = IEEE80211_BAND_2GHZ;
6105         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
6106                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6107                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6108                 band = IEEE80211_BAND_5GHZ;
6109         } else {
6110                 IWL_WARNING("Invalid scan band count\n");
6111                 goto done;
6112         }
6113
6114         /* select Rx antennas */
6115         scan->flags |= iwl3945_get_antenna_flags(priv);
6116
6117         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
6118                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6119
6120         scan->channel_count =
6121                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
6122                                               n_probes,
6123                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6124
6125         if (scan->channel_count == 0) {
6126                 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
6127                 goto done;
6128         }
6129
6130         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6131             scan->channel_count * sizeof(struct iwl3945_scan_channel);
6132         cmd.data = scan;
6133         scan->len = cpu_to_le16(cmd.len);
6134
6135         set_bit(STATUS_SCAN_HW, &priv->status);
6136         rc = iwl3945_send_cmd_sync(priv, &cmd);
6137         if (rc)
6138                 goto done;
6139
6140         queue_delayed_work(priv->workqueue, &priv->scan_check,
6141                            IWL_SCAN_CHECK_WATCHDOG);
6142
6143         mutex_unlock(&priv->mutex);
6144         return;
6145
6146  done:
6147         /* can not perform scan make sure we clear scanning
6148          * bits from status so next scan request can be performed.
6149          * if we dont clear scanning status bit here all next scan
6150          * will fail
6151         */
6152         clear_bit(STATUS_SCAN_HW, &priv->status);
6153         clear_bit(STATUS_SCANNING, &priv->status);
6154
6155         /* inform mac80211 scan aborted */
6156         queue_work(priv->workqueue, &priv->scan_completed);
6157         mutex_unlock(&priv->mutex);
6158 }
6159
6160 static void iwl3945_bg_up(struct work_struct *data)
6161 {
6162         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6163
6164         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6165                 return;
6166
6167         mutex_lock(&priv->mutex);
6168         __iwl3945_up(priv);
6169         mutex_unlock(&priv->mutex);
6170         iwl3945_rfkill_set_hw_state(priv);
6171 }
6172
6173 static void iwl3945_bg_restart(struct work_struct *data)
6174 {
6175         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6176
6177         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6178                 return;
6179
6180         iwl3945_down(priv);
6181         queue_work(priv->workqueue, &priv->up);
6182 }
6183
6184 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6185 {
6186         struct iwl_priv *priv =
6187             container_of(data, struct iwl_priv, rx_replenish);
6188
6189         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6190                 return;
6191
6192         mutex_lock(&priv->mutex);
6193         iwl3945_rx_replenish(priv);
6194         mutex_unlock(&priv->mutex);
6195 }
6196
6197 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6198
6199 static void iwl3945_post_associate(struct iwl_priv *priv)
6200 {
6201         int rc = 0;
6202         struct ieee80211_conf *conf = NULL;
6203
6204         if (priv->iw_mode == NL80211_IFTYPE_AP) {
6205                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
6206                 return;
6207         }
6208
6209
6210         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
6211                         priv->assoc_id, priv->active39_rxon.bssid_addr);
6212
6213         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6214                 return;
6215
6216         if (!priv->vif || !priv->is_open)
6217                 return;
6218
6219         iwl3945_scan_cancel_timeout(priv, 200);
6220
6221         conf = ieee80211_get_hw_conf(priv->hw);
6222
6223         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6224         iwl3945_commit_rxon(priv);
6225
6226         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6227         iwl3945_setup_rxon_timing(priv);
6228         rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6229                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6230         if (rc)
6231                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6232                             "Attempting to continue.\n");
6233
6234         priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6235
6236         priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6237
6238         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6239                         priv->assoc_id, priv->beacon_int);
6240
6241         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6242                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6243         else
6244                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6245
6246         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6247                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6248                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6249                 else
6250                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6251
6252                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6253                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6254
6255         }
6256
6257         iwl3945_commit_rxon(priv);
6258
6259         switch (priv->iw_mode) {
6260         case NL80211_IFTYPE_STATION:
6261                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6262                 break;
6263
6264         case NL80211_IFTYPE_ADHOC:
6265
6266                 priv->assoc_id = 1;
6267                 iwl3945_add_station(priv, priv->bssid, 0, 0);
6268                 iwl3945_sync_sta(priv, IWL_STA_ID,
6269                                  (priv->band == IEEE80211_BAND_5GHZ) ?
6270                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6271                                  CMD_ASYNC);
6272                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6273                 iwl3945_send_beacon_cmd(priv);
6274
6275                 break;
6276
6277         default:
6278                  IWL_ERROR("%s Should not be called in %d mode\n",
6279                            __func__, priv->iw_mode);
6280                 break;
6281         }
6282
6283         iwl3945_activate_qos(priv, 0);
6284
6285         /* we have just associated, don't start scan too early */
6286         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6287 }
6288
6289 static void iwl3945_bg_abort_scan(struct work_struct *work)
6290 {
6291         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6292
6293         if (!iwl3945_is_ready(priv))
6294                 return;
6295
6296         mutex_lock(&priv->mutex);
6297
6298         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6299         iwl3945_send_scan_abort(priv);
6300
6301         mutex_unlock(&priv->mutex);
6302 }
6303
6304 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
6305
6306 static void iwl3945_bg_scan_completed(struct work_struct *work)
6307 {
6308         struct iwl_priv *priv =
6309             container_of(work, struct iwl_priv, scan_completed);
6310
6311         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6312
6313         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6314                 return;
6315
6316         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6317                 iwl3945_mac_config(priv->hw, 0);
6318
6319         ieee80211_scan_completed(priv->hw);
6320
6321         /* Since setting the TXPOWER may have been deferred while
6322          * performing the scan, fire one off */
6323         mutex_lock(&priv->mutex);
6324         iwl3945_hw_reg_send_txpower(priv);
6325         mutex_unlock(&priv->mutex);
6326 }
6327
6328 /*****************************************************************************
6329  *
6330  * mac80211 entry point functions
6331  *
6332  *****************************************************************************/
6333
6334 #define UCODE_READY_TIMEOUT     (2 * HZ)
6335
6336 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6337 {
6338         struct iwl_priv *priv = hw->priv;
6339         int ret;
6340
6341         IWL_DEBUG_MAC80211("enter\n");
6342
6343         if (pci_enable_device(priv->pci_dev)) {
6344                 IWL_ERROR("Fail to pci_enable_device\n");
6345                 return -ENODEV;
6346         }
6347         pci_restore_state(priv->pci_dev);
6348         pci_enable_msi(priv->pci_dev);
6349
6350         ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6351                           DRV_NAME, priv);
6352         if (ret) {
6353                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6354                 goto out_disable_msi;
6355         }
6356
6357         /* we should be verifying the device is ready to be opened */
6358         mutex_lock(&priv->mutex);
6359
6360         memset(&priv->staging39_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6361         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6362          * ucode filename and max sizes are card-specific. */
6363
6364         if (!priv->ucode_code.len) {
6365                 ret = iwl3945_read_ucode(priv);
6366                 if (ret) {
6367                         IWL_ERROR("Could not read microcode: %d\n", ret);
6368                         mutex_unlock(&priv->mutex);
6369                         goto out_release_irq;
6370                 }
6371         }
6372
6373         ret = __iwl3945_up(priv);
6374
6375         mutex_unlock(&priv->mutex);
6376
6377         iwl3945_rfkill_set_hw_state(priv);
6378
6379         if (ret)
6380                 goto out_release_irq;
6381
6382         IWL_DEBUG_INFO("Start UP work.\n");
6383
6384         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6385                 return 0;
6386
6387         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6388          * mac80211 will not be run successfully. */
6389         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6390                         test_bit(STATUS_READY, &priv->status),
6391                         UCODE_READY_TIMEOUT);
6392         if (!ret) {
6393                 if (!test_bit(STATUS_READY, &priv->status)) {
6394                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6395                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6396                         ret = -ETIMEDOUT;
6397                         goto out_release_irq;
6398                 }
6399         }
6400
6401         priv->is_open = 1;
6402         IWL_DEBUG_MAC80211("leave\n");
6403         return 0;
6404
6405 out_release_irq:
6406         free_irq(priv->pci_dev->irq, priv);
6407 out_disable_msi:
6408         pci_disable_msi(priv->pci_dev);
6409         pci_disable_device(priv->pci_dev);
6410         priv->is_open = 0;
6411         IWL_DEBUG_MAC80211("leave - failed\n");
6412         return ret;
6413 }
6414
6415 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6416 {
6417         struct iwl_priv *priv = hw->priv;
6418
6419         IWL_DEBUG_MAC80211("enter\n");
6420
6421         if (!priv->is_open) {
6422                 IWL_DEBUG_MAC80211("leave - skip\n");
6423                 return;
6424         }
6425
6426         priv->is_open = 0;
6427
6428         if (iwl3945_is_ready_rf(priv)) {
6429                 /* stop mac, cancel any scan request and clear
6430                  * RXON_FILTER_ASSOC_MSK BIT
6431                  */
6432                 mutex_lock(&priv->mutex);
6433                 iwl3945_scan_cancel_timeout(priv, 100);
6434                 mutex_unlock(&priv->mutex);
6435         }
6436
6437         iwl3945_down(priv);
6438
6439         flush_workqueue(priv->workqueue);
6440         free_irq(priv->pci_dev->irq, priv);
6441         pci_disable_msi(priv->pci_dev);
6442         pci_save_state(priv->pci_dev);
6443         pci_disable_device(priv->pci_dev);
6444
6445         IWL_DEBUG_MAC80211("leave\n");
6446 }
6447
6448 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
6449 {
6450         struct iwl_priv *priv = hw->priv;
6451
6452         IWL_DEBUG_MAC80211("enter\n");
6453
6454         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6455                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
6456
6457         if (iwl3945_tx_skb(priv, skb))
6458                 dev_kfree_skb_any(skb);
6459
6460         IWL_DEBUG_MAC80211("leave\n");
6461         return NETDEV_TX_OK;
6462 }
6463
6464 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6465                                  struct ieee80211_if_init_conf *conf)
6466 {
6467         struct iwl_priv *priv = hw->priv;
6468         unsigned long flags;
6469
6470         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6471
6472         if (priv->vif) {
6473                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6474                 return -EOPNOTSUPP;
6475         }
6476
6477         spin_lock_irqsave(&priv->lock, flags);
6478         priv->vif = conf->vif;
6479         priv->iw_mode = conf->type;
6480
6481         spin_unlock_irqrestore(&priv->lock, flags);
6482
6483         mutex_lock(&priv->mutex);
6484
6485         if (conf->mac_addr) {
6486                 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
6487                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6488         }
6489
6490         if (iwl3945_is_ready(priv))
6491                 iwl3945_set_mode(priv, conf->type);
6492
6493         mutex_unlock(&priv->mutex);
6494
6495         IWL_DEBUG_MAC80211("leave\n");
6496         return 0;
6497 }
6498
6499 /**
6500  * iwl3945_mac_config - mac80211 config callback
6501  *
6502  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6503  * be set inappropriately and the driver currently sets the hardware up to
6504  * use it whenever needed.
6505  */
6506 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
6507 {
6508         struct iwl_priv *priv = hw->priv;
6509         const struct iwl_channel_info *ch_info;
6510         struct ieee80211_conf *conf = &hw->conf;
6511         unsigned long flags;
6512         int ret = 0;
6513
6514         mutex_lock(&priv->mutex);
6515         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6516
6517         if (!iwl3945_is_ready(priv)) {
6518                 IWL_DEBUG_MAC80211("leave - not ready\n");
6519                 ret = -EIO;
6520                 goto out;
6521         }
6522
6523         if (unlikely(!iwl3945_param_disable_hw_scan &&
6524                      test_bit(STATUS_SCANNING, &priv->status))) {
6525                 IWL_DEBUG_MAC80211("leave - scanning\n");
6526                 set_bit(STATUS_CONF_PENDING, &priv->status);
6527                 mutex_unlock(&priv->mutex);
6528                 return 0;
6529         }
6530
6531         spin_lock_irqsave(&priv->lock, flags);
6532
6533         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6534                                            conf->channel->hw_value);
6535         if (!is_channel_valid(ch_info)) {
6536                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6537                                conf->channel->hw_value, conf->channel->band);
6538                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6539                 spin_unlock_irqrestore(&priv->lock, flags);
6540                 ret = -EINVAL;
6541                 goto out;
6542         }
6543
6544         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6545
6546         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6547
6548         /* The list of supported rates and rate mask can be different
6549          * for each phymode; since the phymode may have changed, reset
6550          * the rate mask to what mac80211 lists */
6551         iwl3945_set_rate(priv);
6552
6553         spin_unlock_irqrestore(&priv->lock, flags);
6554
6555 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6556         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6557                 iwl3945_hw_channel_switch(priv, conf->channel);
6558                 goto out;
6559         }
6560 #endif
6561
6562         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6563
6564         if (!conf->radio_enabled) {
6565                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6566                 goto out;
6567         }
6568
6569         if (iwl3945_is_rfkill(priv)) {
6570                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6571                 ret = -EIO;
6572                 goto out;
6573         }
6574
6575         iwl3945_set_rate(priv);
6576
6577         if (memcmp(&priv->active39_rxon,
6578                    &priv->staging39_rxon, sizeof(priv->staging39_rxon)))
6579                 iwl3945_commit_rxon(priv);
6580         else
6581                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6582
6583         IWL_DEBUG_MAC80211("leave\n");
6584
6585 out:
6586         clear_bit(STATUS_CONF_PENDING, &priv->status);
6587         mutex_unlock(&priv->mutex);
6588         return ret;
6589 }
6590
6591 static void iwl3945_config_ap(struct iwl_priv *priv)
6592 {
6593         int rc = 0;
6594
6595         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6596                 return;
6597
6598         /* The following should be done only at AP bring up */
6599         if (!(iwl3945_is_associated(priv))) {
6600
6601                 /* RXON - unassoc (to set timing command) */
6602                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6603                 iwl3945_commit_rxon(priv);
6604
6605                 /* RXON Timing */
6606                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6607                 iwl3945_setup_rxon_timing(priv);
6608                 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6609                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6610                 if (rc)
6611                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6612                                         "Attempting to continue.\n");
6613
6614                 /* FIXME: what should be the assoc_id for AP? */
6615                 priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6616                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6617                         priv->staging39_rxon.flags |=
6618                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6619                 else
6620                         priv->staging39_rxon.flags &=
6621                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6622
6623                 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6624                         if (priv->assoc_capability &
6625                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6626                                 priv->staging39_rxon.flags |=
6627                                         RXON_FLG_SHORT_SLOT_MSK;
6628                         else
6629                                 priv->staging39_rxon.flags &=
6630                                         ~RXON_FLG_SHORT_SLOT_MSK;
6631
6632                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6633                                 priv->staging39_rxon.flags &=
6634                                         ~RXON_FLG_SHORT_SLOT_MSK;
6635                 }
6636                 /* restore RXON assoc */
6637                 priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6638                 iwl3945_commit_rxon(priv);
6639                 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
6640         }
6641         iwl3945_send_beacon_cmd(priv);
6642
6643         /* FIXME - we need to add code here to detect a totally new
6644          * configuration, reset the AP, unassoc, rxon timing, assoc,
6645          * clear sta table, add BCAST sta... */
6646 }
6647
6648 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6649                                         struct ieee80211_vif *vif,
6650                                         struct ieee80211_if_conf *conf)
6651 {
6652         struct iwl_priv *priv = hw->priv;
6653         int rc;
6654
6655         if (conf == NULL)
6656                 return -EIO;
6657
6658         if (priv->vif != vif) {
6659                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6660                 return 0;
6661         }
6662
6663         /* handle this temporarily here */
6664         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
6665             conf->changed & IEEE80211_IFCC_BEACON) {
6666                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
6667                 if (!beacon)
6668                         return -ENOMEM;
6669                 mutex_lock(&priv->mutex);
6670                 rc = iwl3945_mac_beacon_update(hw, beacon);
6671                 mutex_unlock(&priv->mutex);
6672                 if (rc)
6673                         return rc;
6674         }
6675
6676         if (!iwl3945_is_alive(priv))
6677                 return -EAGAIN;
6678
6679         mutex_lock(&priv->mutex);
6680
6681         if (conf->bssid)
6682                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
6683
6684 /*
6685  * very dubious code was here; the probe filtering flag is never set:
6686  *
6687         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6688             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6689  */
6690
6691         if (priv->iw_mode == NL80211_IFTYPE_AP) {
6692                 if (!conf->bssid) {
6693                         conf->bssid = priv->mac_addr;
6694                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6695                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
6696                                            conf->bssid);
6697                 }
6698                 if (priv->ibss_beacon)
6699                         dev_kfree_skb(priv->ibss_beacon);
6700
6701                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
6702         }
6703
6704         if (iwl3945_is_rfkill(priv))
6705                 goto done;
6706
6707         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6708             !is_multicast_ether_addr(conf->bssid)) {
6709                 /* If there is currently a HW scan going on in the background
6710                  * then we need to cancel it else the RXON below will fail. */
6711                 if (iwl3945_scan_cancel_timeout(priv, 100)) {
6712                         IWL_WARNING("Aborted scan still in progress "
6713                                     "after 100ms\n");
6714                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6715                         mutex_unlock(&priv->mutex);
6716                         return -EAGAIN;
6717                 }
6718                 memcpy(priv->staging39_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6719
6720                 /* TODO: Audit driver for usage of these members and see
6721                  * if mac80211 deprecates them (priv->bssid looks like it
6722                  * shouldn't be there, but I haven't scanned the IBSS code
6723                  * to verify) - jpk */
6724                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6725
6726                 if (priv->iw_mode == NL80211_IFTYPE_AP)
6727                         iwl3945_config_ap(priv);
6728                 else {
6729                         rc = iwl3945_commit_rxon(priv);
6730                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
6731                                 iwl3945_add_station(priv,
6732                                         priv->active39_rxon.bssid_addr, 1, 0);
6733                 }
6734
6735         } else {
6736                 iwl3945_scan_cancel_timeout(priv, 100);
6737                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6738                 iwl3945_commit_rxon(priv);
6739         }
6740
6741  done:
6742         IWL_DEBUG_MAC80211("leave\n");
6743         mutex_unlock(&priv->mutex);
6744
6745         return 0;
6746 }
6747
6748 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6749                                  unsigned int changed_flags,
6750                                  unsigned int *total_flags,
6751                                  int mc_count, struct dev_addr_list *mc_list)
6752 {
6753         struct iwl_priv *priv = hw->priv;
6754         __le32 *filter_flags = &priv->staging39_rxon.filter_flags;
6755
6756         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
6757                         changed_flags, *total_flags);
6758
6759         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
6760                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
6761                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
6762                 else
6763                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
6764         }
6765         if (changed_flags & FIF_ALLMULTI) {
6766                 if (*total_flags & FIF_ALLMULTI)
6767                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
6768                 else
6769                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
6770         }
6771         if (changed_flags & FIF_CONTROL) {
6772                 if (*total_flags & FIF_CONTROL)
6773                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
6774                 else
6775                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
6776         }
6777         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
6778                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
6779                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
6780                 else
6781                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
6782         }
6783
6784         /* We avoid iwl_commit_rxon here to commit the new filter flags
6785          * since mac80211 will call ieee80211_hw_config immediately.
6786          * (mc_list is not supported at this time). Otherwise, we need to
6787          * queue a background iwl_commit_rxon work.
6788          */
6789
6790         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
6791                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6792 }
6793
6794 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
6795                                      struct ieee80211_if_init_conf *conf)
6796 {
6797         struct iwl_priv *priv = hw->priv;
6798
6799         IWL_DEBUG_MAC80211("enter\n");
6800
6801         mutex_lock(&priv->mutex);
6802
6803         if (iwl3945_is_ready_rf(priv)) {
6804                 iwl3945_scan_cancel_timeout(priv, 100);
6805                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6806                 iwl3945_commit_rxon(priv);
6807         }
6808         if (priv->vif == conf->vif) {
6809                 priv->vif = NULL;
6810                 memset(priv->bssid, 0, ETH_ALEN);
6811         }
6812         mutex_unlock(&priv->mutex);
6813
6814         IWL_DEBUG_MAC80211("leave\n");
6815 }
6816
6817 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6818
6819 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
6820                                      struct ieee80211_vif *vif,
6821                                      struct ieee80211_bss_conf *bss_conf,
6822                                      u32 changes)
6823 {
6824         struct iwl_priv *priv = hw->priv;
6825
6826         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6827
6828         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6829                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6830                                    bss_conf->use_short_preamble);
6831                 if (bss_conf->use_short_preamble)
6832                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6833                 else
6834                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6835         }
6836
6837         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6838                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6839                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6840                         priv->staging39_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6841                 else
6842                         priv->staging39_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6843         }
6844
6845         if (changes & BSS_CHANGED_ASSOC) {
6846                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6847                 /* This should never happen as this function should
6848                  * never be called from interrupt context. */
6849                 if (WARN_ON_ONCE(in_interrupt()))
6850                         return;
6851                 if (bss_conf->assoc) {
6852                         priv->assoc_id = bss_conf->aid;
6853                         priv->beacon_int = bss_conf->beacon_int;
6854                         priv->timestamp = bss_conf->timestamp;
6855                         priv->assoc_capability = bss_conf->assoc_capability;
6856                         priv->next_scan_jiffies = jiffies +
6857                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6858                         mutex_lock(&priv->mutex);
6859                         iwl3945_post_associate(priv);
6860                         mutex_unlock(&priv->mutex);
6861                 } else {
6862                         priv->assoc_id = 0;
6863                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6864                 }
6865         } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
6866                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6867                         iwl3945_send_rxon_assoc(priv);
6868         }
6869
6870 }
6871
6872 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6873 {
6874         int rc = 0;
6875         unsigned long flags;
6876         struct iwl_priv *priv = hw->priv;
6877         DECLARE_SSID_BUF(ssid_buf);
6878
6879         IWL_DEBUG_MAC80211("enter\n");
6880
6881         mutex_lock(&priv->mutex);
6882         spin_lock_irqsave(&priv->lock, flags);
6883
6884         if (!iwl3945_is_ready_rf(priv)) {
6885                 rc = -EIO;
6886                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6887                 goto out_unlock;
6888         }
6889
6890         /* we don't schedule scan within next_scan_jiffies period */
6891         if (priv->next_scan_jiffies &&
6892                         time_after(priv->next_scan_jiffies, jiffies)) {
6893                 rc = -EAGAIN;
6894                 goto out_unlock;
6895         }
6896         /* if we just finished scan ask for delay for a broadcast scan */
6897         if ((len == 0) && priv->last_scan_jiffies &&
6898             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
6899                        jiffies)) {
6900                 rc = -EAGAIN;
6901                 goto out_unlock;
6902         }
6903         if (len) {
6904                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6905                                print_ssid(ssid_buf, ssid, len), (int)len);
6906
6907                 priv->one_direct_scan = 1;
6908                 priv->direct_ssid_len = (u8)
6909                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6910                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6911         } else
6912                 priv->one_direct_scan = 0;
6913
6914         rc = iwl3945_scan_initiate(priv);
6915
6916         IWL_DEBUG_MAC80211("leave\n");
6917
6918 out_unlock:
6919         spin_unlock_irqrestore(&priv->lock, flags);
6920         mutex_unlock(&priv->mutex);
6921
6922         return rc;
6923 }
6924
6925 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6926                            const u8 *local_addr, const u8 *addr,
6927                            struct ieee80211_key_conf *key)
6928 {
6929         struct iwl_priv *priv = hw->priv;
6930         int rc = 0;
6931         u8 sta_id;
6932
6933         IWL_DEBUG_MAC80211("enter\n");
6934
6935         if (!iwl3945_param_hwcrypto) {
6936                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6937                 return -EOPNOTSUPP;
6938         }
6939
6940         if (is_zero_ether_addr(addr))
6941                 /* only support pairwise keys */
6942                 return -EOPNOTSUPP;
6943
6944         sta_id = iwl3945_hw_find_station(priv, addr);
6945         if (sta_id == IWL_INVALID_STATION) {
6946                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
6947                                    addr);
6948                 return -EINVAL;
6949         }
6950
6951         mutex_lock(&priv->mutex);
6952
6953         iwl3945_scan_cancel_timeout(priv, 100);
6954
6955         switch (cmd) {
6956         case  SET_KEY:
6957                 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
6958                 if (!rc) {
6959                         iwl3945_set_rxon_hwcrypto(priv, 1);
6960                         iwl3945_commit_rxon(priv);
6961                         key->hw_key_idx = sta_id;
6962                         IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
6963                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
6964                 }
6965                 break;
6966         case DISABLE_KEY:
6967                 rc = iwl3945_clear_sta_key_info(priv, sta_id);
6968                 if (!rc) {
6969                         iwl3945_set_rxon_hwcrypto(priv, 0);
6970                         iwl3945_commit_rxon(priv);
6971                         IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6972                 }
6973                 break;
6974         default:
6975                 rc = -EINVAL;
6976         }
6977
6978         IWL_DEBUG_MAC80211("leave\n");
6979         mutex_unlock(&priv->mutex);
6980
6981         return rc;
6982 }
6983
6984 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
6985                            const struct ieee80211_tx_queue_params *params)
6986 {
6987         struct iwl_priv *priv = hw->priv;
6988         unsigned long flags;
6989         int q;
6990
6991         IWL_DEBUG_MAC80211("enter\n");
6992
6993         if (!iwl3945_is_ready_rf(priv)) {
6994                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6995                 return -EIO;
6996         }
6997
6998         if (queue >= AC_NUM) {
6999                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7000                 return 0;
7001         }
7002
7003         q = AC_NUM - 1 - queue;
7004
7005         spin_lock_irqsave(&priv->lock, flags);
7006
7007         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7008         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7009         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7010         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7011                         cpu_to_le16((params->txop * 32));
7012
7013         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7014         priv->qos_data.qos_active = 1;
7015
7016         spin_unlock_irqrestore(&priv->lock, flags);
7017
7018         mutex_lock(&priv->mutex);
7019         if (priv->iw_mode == NL80211_IFTYPE_AP)
7020                 iwl3945_activate_qos(priv, 1);
7021         else if (priv->assoc_id && iwl3945_is_associated(priv))
7022                 iwl3945_activate_qos(priv, 0);
7023
7024         mutex_unlock(&priv->mutex);
7025
7026         IWL_DEBUG_MAC80211("leave\n");
7027         return 0;
7028 }
7029
7030 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7031                                 struct ieee80211_tx_queue_stats *stats)
7032 {
7033         struct iwl_priv *priv = hw->priv;
7034         int i, avail;
7035         struct iwl3945_tx_queue *txq;
7036         struct iwl_queue *q;
7037         unsigned long flags;
7038
7039         IWL_DEBUG_MAC80211("enter\n");
7040
7041         if (!iwl3945_is_ready_rf(priv)) {
7042                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7043                 return -EIO;
7044         }
7045
7046         spin_lock_irqsave(&priv->lock, flags);
7047
7048         for (i = 0; i < AC_NUM; i++) {
7049                 txq = &priv->txq39[i];
7050                 q = &txq->q;
7051                 avail = iwl_queue_space(q);
7052
7053                 stats[i].len = q->n_window - avail;
7054                 stats[i].limit = q->n_window - q->high_mark;
7055                 stats[i].count = q->n_window;
7056
7057         }
7058         spin_unlock_irqrestore(&priv->lock, flags);
7059
7060         IWL_DEBUG_MAC80211("leave\n");
7061
7062         return 0;
7063 }
7064
7065 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7066 {
7067         struct iwl_priv *priv = hw->priv;
7068         unsigned long flags;
7069
7070         mutex_lock(&priv->mutex);
7071         IWL_DEBUG_MAC80211("enter\n");
7072
7073         iwl3945_reset_qos(priv);
7074
7075         spin_lock_irqsave(&priv->lock, flags);
7076         priv->assoc_id = 0;
7077         priv->assoc_capability = 0;
7078         priv->call_post_assoc_from_beacon = 0;
7079
7080         /* new association get rid of ibss beacon skb */
7081         if (priv->ibss_beacon)
7082                 dev_kfree_skb(priv->ibss_beacon);
7083
7084         priv->ibss_beacon = NULL;
7085
7086         priv->beacon_int = priv->hw->conf.beacon_int;
7087         priv->timestamp = 0;
7088         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
7089                 priv->beacon_int = 0;
7090
7091         spin_unlock_irqrestore(&priv->lock, flags);
7092
7093         if (!iwl3945_is_ready_rf(priv)) {
7094                 IWL_DEBUG_MAC80211("leave - not ready\n");
7095                 mutex_unlock(&priv->mutex);
7096                 return;
7097         }
7098
7099         /* we are restarting association process
7100          * clear RXON_FILTER_ASSOC_MSK bit
7101         */
7102         if (priv->iw_mode != NL80211_IFTYPE_AP) {
7103                 iwl3945_scan_cancel_timeout(priv, 100);
7104                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7105                 iwl3945_commit_rxon(priv);
7106         }
7107
7108         /* Per mac80211.h: This is only used in IBSS mode... */
7109         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7110
7111                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7112                 mutex_unlock(&priv->mutex);
7113                 return;
7114         }
7115
7116         iwl3945_set_rate(priv);
7117
7118         mutex_unlock(&priv->mutex);
7119
7120         IWL_DEBUG_MAC80211("leave\n");
7121
7122 }
7123
7124 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
7125 {
7126         struct iwl_priv *priv = hw->priv;
7127         unsigned long flags;
7128
7129         IWL_DEBUG_MAC80211("enter\n");
7130
7131         if (!iwl3945_is_ready_rf(priv)) {
7132                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7133                 return -EIO;
7134         }
7135
7136         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7137                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7138                 return -EIO;
7139         }
7140
7141         spin_lock_irqsave(&priv->lock, flags);
7142
7143         if (priv->ibss_beacon)
7144                 dev_kfree_skb(priv->ibss_beacon);
7145
7146         priv->ibss_beacon = skb;
7147
7148         priv->assoc_id = 0;
7149
7150         IWL_DEBUG_MAC80211("leave\n");
7151         spin_unlock_irqrestore(&priv->lock, flags);
7152
7153         iwl3945_reset_qos(priv);
7154
7155         iwl3945_post_associate(priv);
7156
7157
7158         return 0;
7159 }
7160
7161 /*****************************************************************************
7162  *
7163  * sysfs attributes
7164  *
7165  *****************************************************************************/
7166
7167 #ifdef CONFIG_IWL3945_DEBUG
7168
7169 /*
7170  * The following adds a new attribute to the sysfs representation
7171  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7172  * used for controlling the debug level.
7173  *
7174  * See the level definitions in iwl for details.
7175  */
7176 static ssize_t show_debug_level(struct device *d,
7177                                 struct device_attribute *attr, char *buf)
7178 {
7179         struct iwl_priv *priv = d->driver_data;
7180
7181         return sprintf(buf, "0x%08X\n", priv->debug_level);
7182 }
7183 static ssize_t store_debug_level(struct device *d,
7184                                 struct device_attribute *attr,
7185                                  const char *buf, size_t count)
7186 {
7187         struct iwl_priv *priv = d->driver_data;
7188         unsigned long val;
7189         int ret;
7190
7191         ret = strict_strtoul(buf, 0, &val);
7192         if (ret)
7193                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
7194         else
7195                 priv->debug_level = val;
7196
7197         return strnlen(buf, count);
7198 }
7199
7200 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
7201                         show_debug_level, store_debug_level);
7202
7203 #endif /* CONFIG_IWL3945_DEBUG */
7204
7205 static ssize_t show_temperature(struct device *d,
7206                                 struct device_attribute *attr, char *buf)
7207 {
7208         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7209
7210         if (!iwl3945_is_alive(priv))
7211                 return -EAGAIN;
7212
7213         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7214 }
7215
7216 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7217
7218 static ssize_t show_tx_power(struct device *d,
7219                              struct device_attribute *attr, char *buf)
7220 {
7221         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7222         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7223 }
7224
7225 static ssize_t store_tx_power(struct device *d,
7226                               struct device_attribute *attr,
7227                               const char *buf, size_t count)
7228 {
7229         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7230         char *p = (char *)buf;
7231         u32 val;
7232
7233         val = simple_strtoul(p, &p, 10);
7234         if (p == buf)
7235                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
7236         else
7237                 iwl3945_hw_reg_set_txpower(priv, val);
7238
7239         return count;
7240 }
7241
7242 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7243
7244 static ssize_t show_flags(struct device *d,
7245                           struct device_attribute *attr, char *buf)
7246 {
7247         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7248
7249         return sprintf(buf, "0x%04X\n", priv->active39_rxon.flags);
7250 }
7251
7252 static ssize_t store_flags(struct device *d,
7253                            struct device_attribute *attr,
7254                            const char *buf, size_t count)
7255 {
7256         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7257         u32 flags = simple_strtoul(buf, NULL, 0);
7258
7259         mutex_lock(&priv->mutex);
7260         if (le32_to_cpu(priv->staging39_rxon.flags) != flags) {
7261                 /* Cancel any currently running scans... */
7262                 if (iwl3945_scan_cancel_timeout(priv, 100))
7263                         IWL_WARNING("Could not cancel scan.\n");
7264                 else {
7265                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7266                                        flags);
7267                         priv->staging39_rxon.flags = cpu_to_le32(flags);
7268                         iwl3945_commit_rxon(priv);
7269                 }
7270         }
7271         mutex_unlock(&priv->mutex);
7272
7273         return count;
7274 }
7275
7276 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7277
7278 static ssize_t show_filter_flags(struct device *d,
7279                                  struct device_attribute *attr, char *buf)
7280 {
7281         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7282
7283         return sprintf(buf, "0x%04X\n",
7284                 le32_to_cpu(priv->active39_rxon.filter_flags));
7285 }
7286
7287 static ssize_t store_filter_flags(struct device *d,
7288                                   struct device_attribute *attr,
7289                                   const char *buf, size_t count)
7290 {
7291         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7292         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7293
7294         mutex_lock(&priv->mutex);
7295         if (le32_to_cpu(priv->staging39_rxon.filter_flags) != filter_flags) {
7296                 /* Cancel any currently running scans... */
7297                 if (iwl3945_scan_cancel_timeout(priv, 100))
7298                         IWL_WARNING("Could not cancel scan.\n");
7299                 else {
7300                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7301                                        "0x%04X\n", filter_flags);
7302                         priv->staging39_rxon.filter_flags =
7303                                 cpu_to_le32(filter_flags);
7304                         iwl3945_commit_rxon(priv);
7305                 }
7306         }
7307         mutex_unlock(&priv->mutex);
7308
7309         return count;
7310 }
7311
7312 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7313                    store_filter_flags);
7314
7315 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7316
7317 static ssize_t show_measurement(struct device *d,
7318                                 struct device_attribute *attr, char *buf)
7319 {
7320         struct iwl_priv *priv = dev_get_drvdata(d);
7321         struct iwl_spectrum_notification measure_report;
7322         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7323         u8 *data = (u8 *)&measure_report;
7324         unsigned long flags;
7325
7326         spin_lock_irqsave(&priv->lock, flags);
7327         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7328                 spin_unlock_irqrestore(&priv->lock, flags);
7329                 return 0;
7330         }
7331         memcpy(&measure_report, &priv->measure_report, size);
7332         priv->measurement_status = 0;
7333         spin_unlock_irqrestore(&priv->lock, flags);
7334
7335         while (size && (PAGE_SIZE - len)) {
7336                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7337                                    PAGE_SIZE - len, 1);
7338                 len = strlen(buf);
7339                 if (PAGE_SIZE - len)
7340                         buf[len++] = '\n';
7341
7342                 ofs += 16;
7343                 size -= min(size, 16U);
7344         }
7345
7346         return len;
7347 }
7348
7349 static ssize_t store_measurement(struct device *d,
7350                                  struct device_attribute *attr,
7351                                  const char *buf, size_t count)
7352 {
7353         struct iwl_priv *priv = dev_get_drvdata(d);
7354         struct ieee80211_measurement_params params = {
7355                 .channel = le16_to_cpu(priv->active39_rxon.channel),
7356                 .start_time = cpu_to_le64(priv->last_tsf),
7357                 .duration = cpu_to_le16(1),
7358         };
7359         u8 type = IWL_MEASURE_BASIC;
7360         u8 buffer[32];
7361         u8 channel;
7362
7363         if (count) {
7364                 char *p = buffer;
7365                 strncpy(buffer, buf, min(sizeof(buffer), count));
7366                 channel = simple_strtoul(p, NULL, 0);
7367                 if (channel)
7368                         params.channel = channel;
7369
7370                 p = buffer;
7371                 while (*p && *p != ' ')
7372                         p++;
7373                 if (*p)
7374                         type = simple_strtoul(p + 1, NULL, 0);
7375         }
7376
7377         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7378                        "channel %d (for '%s')\n", type, params.channel, buf);
7379         iwl3945_get_measurement(priv, &params, type);
7380
7381         return count;
7382 }
7383
7384 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7385                    show_measurement, store_measurement);
7386 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7387
7388 static ssize_t store_retry_rate(struct device *d,
7389                                 struct device_attribute *attr,
7390                                 const char *buf, size_t count)
7391 {
7392         struct iwl_priv *priv = dev_get_drvdata(d);
7393
7394         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7395         if (priv->retry_rate <= 0)
7396                 priv->retry_rate = 1;
7397
7398         return count;
7399 }
7400
7401 static ssize_t show_retry_rate(struct device *d,
7402                                struct device_attribute *attr, char *buf)
7403 {
7404         struct iwl_priv *priv = dev_get_drvdata(d);
7405         return sprintf(buf, "%d", priv->retry_rate);
7406 }
7407
7408 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7409                    store_retry_rate);
7410
7411 static ssize_t store_power_level(struct device *d,
7412                                  struct device_attribute *attr,
7413                                  const char *buf, size_t count)
7414 {
7415         struct iwl_priv *priv = dev_get_drvdata(d);
7416         int rc;
7417         int mode;
7418
7419         mode = simple_strtoul(buf, NULL, 0);
7420         mutex_lock(&priv->mutex);
7421
7422         if (!iwl3945_is_ready(priv)) {
7423                 rc = -EAGAIN;
7424                 goto out;
7425         }
7426
7427         if ((mode < 1) || (mode > IWL39_POWER_LIMIT) ||
7428             (mode == IWL39_POWER_AC))
7429                 mode = IWL39_POWER_AC;
7430         else
7431                 mode |= IWL_POWER_ENABLED;
7432
7433         if (mode != priv->power_mode) {
7434                 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7435                 if (rc) {
7436                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7437                         goto out;
7438                 }
7439                 priv->power_mode = mode;
7440         }
7441
7442         rc = count;
7443
7444  out:
7445         mutex_unlock(&priv->mutex);
7446         return rc;
7447 }
7448
7449 #define MAX_WX_STRING 80
7450
7451 /* Values are in microsecond */
7452 static const s32 timeout_duration[] = {
7453         350000,
7454         250000,
7455         75000,
7456         37000,
7457         25000,
7458 };
7459 static const s32 period_duration[] = {
7460         400000,
7461         700000,
7462         1000000,
7463         1000000,
7464         1000000
7465 };
7466
7467 static ssize_t show_power_level(struct device *d,
7468                                 struct device_attribute *attr, char *buf)
7469 {
7470         struct iwl_priv *priv = dev_get_drvdata(d);
7471         int level = IWL_POWER_LEVEL(priv->power_mode);
7472         char *p = buf;
7473
7474         p += sprintf(p, "%d ", level);
7475         switch (level) {
7476         case IWL_POWER_MODE_CAM:
7477         case IWL39_POWER_AC:
7478                 p += sprintf(p, "(AC)");
7479                 break;
7480         case IWL39_POWER_BATTERY:
7481                 p += sprintf(p, "(BATTERY)");
7482                 break;
7483         default:
7484                 p += sprintf(p,
7485                              "(Timeout %dms, Period %dms)",
7486                              timeout_duration[level - 1] / 1000,
7487                              period_duration[level - 1] / 1000);
7488         }
7489
7490         if (!(priv->power_mode & IWL_POWER_ENABLED))
7491                 p += sprintf(p, " OFF\n");
7492         else
7493                 p += sprintf(p, " \n");
7494
7495         return p - buf + 1;
7496
7497 }
7498
7499 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7500                    store_power_level);
7501
7502 static ssize_t show_channels(struct device *d,
7503                              struct device_attribute *attr, char *buf)
7504 {
7505         /* all this shit doesn't belong into sysfs anyway */
7506         return 0;
7507 }
7508
7509 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7510
7511 static ssize_t show_statistics(struct device *d,
7512                                struct device_attribute *attr, char *buf)
7513 {
7514         struct iwl_priv *priv = dev_get_drvdata(d);
7515         u32 size = sizeof(struct iwl3945_notif_statistics);
7516         u32 len = 0, ofs = 0;
7517         u8 *data = (u8 *)&priv->statistics_39;
7518         int rc = 0;
7519
7520         if (!iwl3945_is_alive(priv))
7521                 return -EAGAIN;
7522
7523         mutex_lock(&priv->mutex);
7524         rc = iwl3945_send_statistics_request(priv);
7525         mutex_unlock(&priv->mutex);
7526
7527         if (rc) {
7528                 len = sprintf(buf,
7529                               "Error sending statistics request: 0x%08X\n", rc);
7530                 return len;
7531         }
7532
7533         while (size && (PAGE_SIZE - len)) {
7534                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7535                                    PAGE_SIZE - len, 1);
7536                 len = strlen(buf);
7537                 if (PAGE_SIZE - len)
7538                         buf[len++] = '\n';
7539
7540                 ofs += 16;
7541                 size -= min(size, 16U);
7542         }
7543
7544         return len;
7545 }
7546
7547 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7548
7549 static ssize_t show_antenna(struct device *d,
7550                             struct device_attribute *attr, char *buf)
7551 {
7552         struct iwl_priv *priv = dev_get_drvdata(d);
7553
7554         if (!iwl3945_is_alive(priv))
7555                 return -EAGAIN;
7556
7557         return sprintf(buf, "%d\n", priv->antenna);
7558 }
7559
7560 static ssize_t store_antenna(struct device *d,
7561                              struct device_attribute *attr,
7562                              const char *buf, size_t count)
7563 {
7564         int ant;
7565         struct iwl_priv *priv = dev_get_drvdata(d);
7566
7567         if (count == 0)
7568                 return 0;
7569
7570         if (sscanf(buf, "%1i", &ant) != 1) {
7571                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7572                 return count;
7573         }
7574
7575         if ((ant >= 0) && (ant <= 2)) {
7576                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7577                 priv->antenna = (enum iwl3945_antenna)ant;
7578         } else
7579                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7580
7581
7582         return count;
7583 }
7584
7585 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7586
7587 static ssize_t show_status(struct device *d,
7588                            struct device_attribute *attr, char *buf)
7589 {
7590         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7591         if (!iwl3945_is_alive(priv))
7592                 return -EAGAIN;
7593         return sprintf(buf, "0x%08x\n", (int)priv->status);
7594 }
7595
7596 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7597
7598 static ssize_t dump_error_log(struct device *d,
7599                               struct device_attribute *attr,
7600                               const char *buf, size_t count)
7601 {
7602         char *p = (char *)buf;
7603
7604         if (p[0] == '1')
7605                 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7606
7607         return strnlen(buf, count);
7608 }
7609
7610 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7611
7612 static ssize_t dump_event_log(struct device *d,
7613                               struct device_attribute *attr,
7614                               const char *buf, size_t count)
7615 {
7616         char *p = (char *)buf;
7617
7618         if (p[0] == '1')
7619                 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7620
7621         return strnlen(buf, count);
7622 }
7623
7624 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7625
7626 /*****************************************************************************
7627  *
7628  * driver setup and tear down
7629  *
7630  *****************************************************************************/
7631
7632 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
7633 {
7634         priv->workqueue = create_workqueue(DRV_NAME);
7635
7636         init_waitqueue_head(&priv->wait_command_queue);
7637
7638         INIT_WORK(&priv->up, iwl3945_bg_up);
7639         INIT_WORK(&priv->restart, iwl3945_bg_restart);
7640         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7641         INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7642         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7643         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7644         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7645         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7646         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7647         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7648         INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7649
7650         iwl3945_hw_setup_deferred_work(priv);
7651
7652         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7653                      iwl3945_irq_tasklet, (unsigned long)priv);
7654 }
7655
7656 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
7657 {
7658         iwl3945_hw_cancel_deferred_work(priv);
7659
7660         cancel_delayed_work_sync(&priv->init_alive_start);
7661         cancel_delayed_work(&priv->scan_check);
7662         cancel_delayed_work(&priv->alive_start);
7663         cancel_work_sync(&priv->beacon_update);
7664 }
7665
7666 static struct attribute *iwl3945_sysfs_entries[] = {
7667         &dev_attr_antenna.attr,
7668         &dev_attr_channels.attr,
7669         &dev_attr_dump_errors.attr,
7670         &dev_attr_dump_events.attr,
7671         &dev_attr_flags.attr,
7672         &dev_attr_filter_flags.attr,
7673 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7674         &dev_attr_measurement.attr,
7675 #endif
7676         &dev_attr_power_level.attr,
7677         &dev_attr_retry_rate.attr,
7678         &dev_attr_statistics.attr,
7679         &dev_attr_status.attr,
7680         &dev_attr_temperature.attr,
7681         &dev_attr_tx_power.attr,
7682 #ifdef CONFIG_IWL3945_DEBUG
7683         &dev_attr_debug_level.attr,
7684 #endif
7685         NULL
7686 };
7687
7688 static struct attribute_group iwl3945_attribute_group = {
7689         .name = NULL,           /* put in device directory */
7690         .attrs = iwl3945_sysfs_entries,
7691 };
7692
7693 static struct ieee80211_ops iwl3945_hw_ops = {
7694         .tx = iwl3945_mac_tx,
7695         .start = iwl3945_mac_start,
7696         .stop = iwl3945_mac_stop,
7697         .add_interface = iwl3945_mac_add_interface,
7698         .remove_interface = iwl3945_mac_remove_interface,
7699         .config = iwl3945_mac_config,
7700         .config_interface = iwl3945_mac_config_interface,
7701         .configure_filter = iwl3945_configure_filter,
7702         .set_key = iwl3945_mac_set_key,
7703         .get_tx_stats = iwl3945_mac_get_tx_stats,
7704         .conf_tx = iwl3945_mac_conf_tx,
7705         .reset_tsf = iwl3945_mac_reset_tsf,
7706         .bss_info_changed = iwl3945_bss_info_changed,
7707         .hw_scan = iwl3945_mac_hw_scan
7708 };
7709
7710 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7711 {
7712         int err = 0;
7713         struct iwl_priv *priv;
7714         struct ieee80211_hw *hw;
7715         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7716         unsigned long flags;
7717
7718         /***********************
7719          * 1. Allocating HW data
7720          * ********************/
7721
7722         /* mac80211 allocates memory for this device instance, including
7723          *   space for this driver's private structure */
7724         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl3945_hw_ops);
7725         if (hw == NULL) {
7726                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
7727                 err = -ENOMEM;
7728                 goto out;
7729         }
7730
7731         SET_IEEE80211_DEV(hw, &pdev->dev);
7732
7733         priv = hw->priv;
7734         priv->hw = hw;
7735         priv->pci_dev = pdev;
7736         priv->cfg = cfg;
7737
7738         if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
7739             (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
7740                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7741                           IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7742                 err = -EINVAL;
7743                 goto out;
7744         }
7745
7746         /* Disabling hardware scan means that mac80211 will perform scans
7747          * "the hard way", rather than using device's scan. */
7748         if (iwl3945_param_disable_hw_scan) {
7749                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7750                 iwl3945_hw_ops.hw_scan = NULL;
7751         }
7752
7753         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7754         hw->rate_control_algorithm = "iwl-3945-rs";
7755         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7756
7757         /* Select antenna (may be helpful if only one antenna is connected) */
7758         priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
7759 #ifdef CONFIG_IWL3945_DEBUG
7760         priv->debug_level = iwl3945_param_debug;
7761         atomic_set(&priv->restrict_refcnt, 0);
7762 #endif
7763
7764         /* Tell mac80211 our characteristics */
7765         hw->flags = IEEE80211_HW_SIGNAL_DBM |
7766                     IEEE80211_HW_NOISE_DBM;
7767
7768         hw->wiphy->interface_modes =
7769                 BIT(NL80211_IFTYPE_STATION) |
7770                 BIT(NL80211_IFTYPE_ADHOC);
7771
7772         hw->wiphy->fw_handles_regulatory = true;
7773
7774         /* 4 EDCA QOS priorities */
7775         hw->queues = 4;
7776
7777         /***************************
7778          * 2. Initializing PCI bus
7779          * *************************/
7780         if (pci_enable_device(pdev)) {
7781                 err = -ENODEV;
7782                 goto out_ieee80211_free_hw;
7783         }
7784
7785         pci_set_master(pdev);
7786
7787         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7788         if (!err)
7789                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7790         if (err) {
7791                 IWL_WARN(priv, "No suitable DMA available.\n");
7792                 goto out_pci_disable_device;
7793         }
7794
7795         pci_set_drvdata(pdev, priv);
7796         err = pci_request_regions(pdev, DRV_NAME);
7797         if (err)
7798                 goto out_pci_disable_device;
7799
7800         /***********************
7801          * 3. Read REV Register
7802          * ********************/
7803         priv->hw_base = pci_iomap(pdev, 0, 0);
7804         if (!priv->hw_base) {
7805                 err = -ENODEV;
7806                 goto out_pci_release_regions;
7807         }
7808
7809         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7810                         (unsigned long long) pci_resource_len(pdev, 0));
7811         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7812
7813         /* We disable the RETRY_TIMEOUT register (0x41) to keep
7814          * PCI Tx retries from interfering with C3 CPU state */
7815         pci_write_config_byte(pdev, 0x41, 0x00);
7816
7817         /* nic init */
7818         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7819                         CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7820
7821         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7822         err = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
7823                                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7824         if (err < 0) {
7825                 IWL_DEBUG_INFO("Failed to init the card\n");
7826                 goto out_remove_sysfs;
7827         }
7828
7829         /***********************
7830          * 4. Read EEPROM
7831          * ********************/
7832         /* Read the EEPROM */
7833         err = iwl3945_eeprom_init(priv);
7834         if (err) {
7835                 IWL_ERROR("Unable to init EEPROM\n");
7836                 goto out_remove_sysfs;
7837         }
7838         /* MAC Address location in EEPROM same for 3945/4965 */
7839         get_eeprom_mac(priv, priv->mac_addr);
7840         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
7841         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7842
7843         /***********************
7844          * 5. Setup HW Constants
7845          * ********************/
7846         /* Device-specific setup */
7847         if (iwl3945_hw_set_hw_params(priv)) {
7848                 IWL_ERROR("failed to set hw settings\n");
7849                 goto out_iounmap;
7850         }
7851
7852         /***********************
7853          * 6. Setup priv
7854          * ********************/
7855         priv->retry_rate = 1;
7856         priv->ibss_beacon = NULL;
7857
7858         spin_lock_init(&priv->lock);
7859         spin_lock_init(&priv->power_data_39.lock);
7860         spin_lock_init(&priv->sta_lock);
7861         spin_lock_init(&priv->hcmd_lock);
7862
7863         INIT_LIST_HEAD(&priv->free_frames);
7864         mutex_init(&priv->mutex);
7865
7866         /* Clear the driver's (not device's) station table */
7867         iwl3945_clear_stations_table(priv);
7868
7869         priv->data_retry_limit = -1;
7870         priv->ieee_channels = NULL;
7871         priv->ieee_rates = NULL;
7872         priv->band = IEEE80211_BAND_2GHZ;
7873
7874         priv->iw_mode = NL80211_IFTYPE_STATION;
7875
7876         iwl3945_reset_qos(priv);
7877
7878         priv->qos_data.qos_active = 0;
7879         priv->qos_data.qos_cap.val = 0;
7880
7881
7882         priv->rates_mask = IWL_RATES_MASK;
7883         /* If power management is turned on, default to AC mode */
7884         priv->power_mode = IWL39_POWER_AC;
7885         priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
7886
7887         err = iwl3945_init_channel_map(priv);
7888         if (err) {
7889                 IWL_ERROR("initializing regulatory failed: %d\n", err);
7890                 goto out_release_irq;
7891         }
7892
7893         err = iwl3945_init_geos(priv);
7894         if (err) {
7895                 IWL_ERROR("initializing geos failed: %d\n", err);
7896                 goto out_free_channel_map;
7897         }
7898
7899         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
7900                 priv->cfg->name);
7901
7902         /***********************************
7903          * 7. Initialize Module Parameters
7904          * **********************************/
7905
7906         /* Initialize module parameter values here */
7907         /* Disable radio (SW RF KILL) via parameter when loading driver */
7908         if (iwl3945_param_disable) {
7909                 set_bit(STATUS_RF_KILL_SW, &priv->status);
7910                 IWL_DEBUG_INFO("Radio disabled.\n");
7911         }
7912
7913
7914         /***********************
7915          * 8. Setup Services
7916          * ********************/
7917
7918         spin_lock_irqsave(&priv->lock, flags);
7919         iwl3945_disable_interrupts(priv);
7920         spin_unlock_irqrestore(&priv->lock, flags);
7921
7922         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7923         if (err) {
7924                 IWL_ERROR("failed to create sysfs device attributes\n");
7925                 goto out_free_geos;
7926         }
7927
7928         iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
7929         iwl3945_setup_deferred_work(priv);
7930         iwl3945_setup_rx_handlers(priv);
7931
7932         /***********************
7933          * 9. Conclude
7934          * ********************/
7935         pci_save_state(pdev);
7936         pci_disable_device(pdev);
7937
7938         /*********************************
7939          * 10. Setup and Register mac80211
7940          * *******************************/
7941
7942         err = ieee80211_register_hw(priv->hw);
7943         if (err) {
7944                 IWL_ERROR("Failed to register network device (error %d)\n", err);
7945                 goto  out_remove_sysfs;
7946         }
7947
7948         priv->hw->conf.beacon_int = 100;
7949         priv->mac80211_registered = 1;
7950
7951
7952         err = iwl3945_rfkill_init(priv);
7953         if (err)
7954                 IWL_ERROR("Unable to initialize RFKILL system. "
7955                                   "Ignoring error: %d\n", err);
7956
7957         return 0;
7958
7959  out_remove_sysfs:
7960         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7961  out_free_geos:
7962         iwl3945_free_geos(priv);
7963  out_free_channel_map:
7964         iwl3945_free_channel_map(priv);
7965
7966
7967  out_release_irq:
7968         destroy_workqueue(priv->workqueue);
7969         priv->workqueue = NULL;
7970         iwl3945_unset_hw_params(priv);
7971
7972  out_iounmap:
7973         pci_iounmap(pdev, priv->hw_base);
7974  out_pci_release_regions:
7975         pci_release_regions(pdev);
7976  out_pci_disable_device:
7977         pci_disable_device(pdev);
7978         pci_set_drvdata(pdev, NULL);
7979  out_ieee80211_free_hw:
7980         ieee80211_free_hw(priv->hw);
7981  out:
7982         return err;
7983 }
7984
7985 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
7986 {
7987         struct iwl_priv *priv = pci_get_drvdata(pdev);
7988         unsigned long flags;
7989
7990         if (!priv)
7991                 return;
7992
7993         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7994
7995         set_bit(STATUS_EXIT_PENDING, &priv->status);
7996
7997         iwl3945_down(priv);
7998
7999         /* make sure we flush any pending irq or
8000          * tasklet for the driver
8001          */
8002         spin_lock_irqsave(&priv->lock, flags);
8003         iwl3945_disable_interrupts(priv);
8004         spin_unlock_irqrestore(&priv->lock, flags);
8005
8006         iwl_synchronize_irq(priv);
8007
8008         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8009
8010         iwl3945_rfkill_unregister(priv);
8011         iwl3945_dealloc_ucode_pci(priv);
8012
8013         if (priv->rxq.bd)
8014                 iwl3945_rx_queue_free(priv, &priv->rxq);
8015         iwl3945_hw_txq_ctx_free(priv);
8016
8017         iwl3945_unset_hw_params(priv);
8018         iwl3945_clear_stations_table(priv);
8019
8020         if (priv->mac80211_registered)
8021                 ieee80211_unregister_hw(priv->hw);
8022
8023         /*netif_stop_queue(dev); */
8024         flush_workqueue(priv->workqueue);
8025
8026         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8027          * priv->workqueue... so we can't take down the workqueue
8028          * until now... */
8029         destroy_workqueue(priv->workqueue);
8030         priv->workqueue = NULL;
8031
8032         pci_iounmap(pdev, priv->hw_base);
8033         pci_release_regions(pdev);
8034         pci_disable_device(pdev);
8035         pci_set_drvdata(pdev, NULL);
8036
8037         iwl3945_free_channel_map(priv);
8038         iwl3945_free_geos(priv);
8039         kfree(priv->scan39);
8040         if (priv->ibss_beacon)
8041                 dev_kfree_skb(priv->ibss_beacon);
8042
8043         ieee80211_free_hw(priv->hw);
8044 }
8045
8046 #ifdef CONFIG_PM
8047
8048 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8049 {
8050         struct iwl_priv *priv = pci_get_drvdata(pdev);
8051
8052         if (priv->is_open) {
8053                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8054                 iwl3945_mac_stop(priv->hw);
8055                 priv->is_open = 1;
8056         }
8057
8058         pci_set_power_state(pdev, PCI_D3hot);
8059
8060         return 0;
8061 }
8062
8063 static int iwl3945_pci_resume(struct pci_dev *pdev)
8064 {
8065         struct iwl_priv *priv = pci_get_drvdata(pdev);
8066
8067         pci_set_power_state(pdev, PCI_D0);
8068
8069         if (priv->is_open)
8070                 iwl3945_mac_start(priv->hw);
8071
8072         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8073         return 0;
8074 }
8075
8076 #endif /* CONFIG_PM */
8077
8078 /*************** RFKILL FUNCTIONS **********/
8079 #ifdef CONFIG_IWL3945_RFKILL
8080 /* software rf-kill from user */
8081 static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
8082 {
8083         struct iwl_priv *priv = data;
8084         int err = 0;
8085
8086         if (!priv->rfkill)
8087         return 0;
8088
8089         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
8090                 return 0;
8091
8092         IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
8093         mutex_lock(&priv->mutex);
8094
8095         switch (state) {
8096         case RFKILL_STATE_UNBLOCKED:
8097                 if (iwl3945_is_rfkill_hw(priv)) {
8098                         err = -EBUSY;
8099                         goto out_unlock;
8100                 }
8101                 iwl3945_radio_kill_sw(priv, 0);
8102                 break;
8103         case RFKILL_STATE_SOFT_BLOCKED:
8104                 iwl3945_radio_kill_sw(priv, 1);
8105                 break;
8106         default:
8107                 IWL_WARNING("we received unexpected RFKILL state %d\n", state);
8108                 break;
8109         }
8110 out_unlock:
8111         mutex_unlock(&priv->mutex);
8112
8113         return err;
8114 }
8115
8116 int iwl3945_rfkill_init(struct iwl_priv *priv)
8117 {
8118         struct device *device = wiphy_dev(priv->hw->wiphy);
8119         int ret = 0;
8120
8121         BUG_ON(device == NULL);
8122
8123         IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
8124         priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
8125         if (!priv->rfkill) {
8126                 IWL_ERROR("Unable to allocate rfkill device.\n");
8127                 ret = -ENOMEM;
8128                 goto error;
8129         }
8130
8131         priv->rfkill->name = priv->cfg->name;
8132         priv->rfkill->data = priv;
8133         priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
8134         priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
8135         priv->rfkill->user_claim_unsupported = 1;
8136
8137         priv->rfkill->dev.class->suspend = NULL;
8138         priv->rfkill->dev.class->resume = NULL;
8139
8140         ret = rfkill_register(priv->rfkill);
8141         if (ret) {
8142                 IWL_ERROR("Unable to register rfkill: %d\n", ret);
8143                 goto freed_rfkill;
8144         }
8145
8146         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8147         return ret;
8148
8149 freed_rfkill:
8150         if (priv->rfkill != NULL)
8151                 rfkill_free(priv->rfkill);
8152         priv->rfkill = NULL;
8153
8154 error:
8155         IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8156         return ret;
8157 }
8158
8159 void iwl3945_rfkill_unregister(struct iwl_priv *priv)
8160 {
8161         if (priv->rfkill)
8162                 rfkill_unregister(priv->rfkill);
8163
8164         priv->rfkill = NULL;
8165 }
8166
8167 /* set rf-kill to the right state. */
8168 void iwl3945_rfkill_set_hw_state(struct iwl_priv *priv)
8169 {
8170
8171         if (!priv->rfkill)
8172                 return;
8173
8174         if (iwl3945_is_rfkill_hw(priv)) {
8175                 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
8176                 return;
8177         }
8178
8179         if (!iwl3945_is_rfkill_sw(priv))
8180                 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
8181         else
8182                 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
8183 }
8184 #endif
8185
8186 /*****************************************************************************
8187  *
8188  * driver and module entry point
8189  *
8190  *****************************************************************************/
8191
8192 static struct pci_driver iwl3945_driver = {
8193         .name = DRV_NAME,
8194         .id_table = iwl3945_hw_card_ids,
8195         .probe = iwl3945_pci_probe,
8196         .remove = __devexit_p(iwl3945_pci_remove),
8197 #ifdef CONFIG_PM
8198         .suspend = iwl3945_pci_suspend,
8199         .resume = iwl3945_pci_resume,
8200 #endif
8201 };
8202
8203 static int __init iwl3945_init(void)
8204 {
8205
8206         int ret;
8207         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8208         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8209
8210         ret = iwl3945_rate_control_register();
8211         if (ret) {
8212                 printk(KERN_ERR DRV_NAME
8213                        "Unable to register rate control algorithm: %d\n", ret);
8214                 return ret;
8215         }
8216
8217         ret = pci_register_driver(&iwl3945_driver);
8218         if (ret) {
8219                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
8220                 goto error_register;
8221         }
8222
8223         return ret;
8224
8225 error_register:
8226         iwl3945_rate_control_unregister();
8227         return ret;
8228 }
8229
8230 static void __exit iwl3945_exit(void)
8231 {
8232         pci_unregister_driver(&iwl3945_driver);
8233         iwl3945_rate_control_unregister();
8234 }
8235
8236 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
8237
8238 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8239 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8240 module_param_named(disable, iwl3945_param_disable, int, 0444);
8241 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8242 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8243 MODULE_PARM_DESC(hwcrypto,
8244                  "using hardware crypto engine (default 0 [software])\n");
8245 module_param_named(debug, iwl3945_param_debug, uint, 0444);
8246 MODULE_PARM_DESC(debug, "debug output mask");
8247 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8248 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8249
8250 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8251 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8252
8253 module_exit(iwl3945_exit);
8254 module_init(iwl3945_init);