drivers/net/wireless/iwlwifi/iwl4965-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  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-core.h"
  50 #include "iwl-4965.h"
  51 #include "iwl-helpers.h"
  52
  53 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
  54                                   struct iwl4965_tx_queue *txq);
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  65  */
  66
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT);
  87 MODULE_LICENSE("GPL");
  88
  89 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
  90 {
  91         u16 fc = le16_to_cpu(hdr->frame_control);
  92         int hdr_len = ieee80211_get_hdrlen(fc);
  93
  94         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
  95                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
  96         return NULL;
  97 }
  98
  99 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
 100                 struct iwl_priv *priv, enum ieee80211_band band)
 101 {
 102         return priv->hw->wiphy->bands[band];
 103 }
 104
 105 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 106 {
 107         /* Single white space is for Linksys APs */
 108         if (essid_len == 1 && essid[0] == ' ')
 109                 return 1;
 110
 111         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 112         while (essid_len) {
 113                 essid_len--;
 114                 if (essid[essid_len] != '\0')
 115                         return 0;
 116         }
 117
 118         return 1;
 119 }
 120
 121 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 122 {
 123         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 124         const char *s = essid;
 125         char *d = escaped;
 126
 127         if (iwl4965_is_empty_essid(essid, essid_len)) {
 128                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 129                 return escaped;
 130         }
 131
 132         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 133         while (essid_len--) {
 134                 if (*s == '\0') {
 135                         *d++ = '\\';
 136                         *d++ = '0';
 137                         s++;
 138                 } else
 139                         *d++ = *s++;
 140         }
 141         *d = '\0';
 142         return escaped;
 143 }
 144
 145 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 146  * DMA services
 147  *
 148  * Theory of operation
 149  *
 150  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 151  * of buffer descriptors, each of which points to one or more data buffers for
 152  * the device to read from or fill.  Driver and device exchange status of each
 153  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 154  * entries in each circular buffer, to protect against confusing empty and full
 155  * queue states.
 156  *
 157  * The device reads or writes the data in the queues via the device's several
 158  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 159  *
 160  * For Tx queue, there are low mark and high mark limits. If, after queuing
 161  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 162  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 163  * Tx queue resumed.
 164  *
 165  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 166  * queue (#4) for sending commands to the device firmware, and 15 other
 167  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 168  *
 169  * See more detailed info in iwl-4965-hw.h.
 170  ***************************************************/
 171
 172 int iwl4965_queue_space(const struct iwl4965_queue *q)
 173 {
 174         int s = q->read_ptr - q->write_ptr;
 175
 176         if (q->read_ptr > q->write_ptr)
 177                 s -= q->n_bd;
 178
 179         if (s <= 0)
 180                 s += q->n_window;
 181         /* keep some reserve to not confuse empty and full situations */
 182         s -= 2;
 183         if (s < 0)
 184                 s = 0;
 185         return s;
 186 }
 187
 188
 189 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 190 {
 191         return q->write_ptr > q->read_ptr ?
 192                 (i >= q->read_ptr && i < q->write_ptr) :
 193                 !(i < q->read_ptr && i >= q->write_ptr);
 194 }
 195
 196 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 197 {
 198         /* This is for scan command, the big buffer at end of command array */
 199         if (is_huge)
 200                 return q->n_window;     /* must be power of 2 */
 201
 202         /* Otherwise, use normal size buffers */
 203         return index & (q->n_window - 1);
 204 }
 205
 206 /**
 207  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 208  */
 209 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
 210                           int count, int slots_num, u32 id)
 211 {
 212         q->n_bd = count;
 213         q->n_window = slots_num;
 214         q->id = id;
 215
 216         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 217          * and iwl_queue_dec_wrap are broken. */
 218         BUG_ON(!is_power_of_2(count));
 219
 220         /* slots_num must be power-of-two size, otherwise
 221          * get_cmd_index is broken. */
 222         BUG_ON(!is_power_of_2(slots_num));
 223
 224         q->low_mark = q->n_window / 4;
 225         if (q->low_mark < 4)
 226                 q->low_mark = 4;
 227
 228         q->high_mark = q->n_window / 8;
 229         if (q->high_mark < 2)
 230                 q->high_mark = 2;
 231
 232         q->write_ptr = q->read_ptr = 0;
 233
 234         return 0;
 235 }
 236
 237 /**
 238  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 239  */
 240 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
 241                               struct iwl4965_tx_queue *txq, u32 id)
 242 {
 243         struct pci_dev *dev = priv->pci_dev;
 244
 245         /* Driver private data, only for Tx (not command) queues,
 246          * not shared with device. */
 247         if (id != IWL_CMD_QUEUE_NUM) {
 248                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 249                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 250                 if (!txq->txb) {
 251                         IWL_ERROR("kmalloc for auxiliary BD "
 252                                   "structures failed\n");
 253                         goto error;
 254                 }
 255         } else
 256                 txq->txb = NULL;
 257
 258         /* Circular buffer of transmit frame descriptors (TFDs),
 259          * shared with device */
 260         txq->bd = pci_alloc_consistent(dev,
 261                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 262                         &txq->q.dma_addr);
 263
 264         if (!txq->bd) {
 265                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 266                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 267                 goto error;
 268         }
 269         txq->q.id = id;
 270
 271         return 0;
 272
 273  error:
 274         if (txq->txb) {
 275                 kfree(txq->txb);
 276                 txq->txb = NULL;
 277         }
 278
 279         return -ENOMEM;
 280 }
 281
 282 /**
 283  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 284  */
 285 int iwl4965_tx_queue_init(struct iwl_priv *priv,
 286                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 287 {
 288         struct pci_dev *dev = priv->pci_dev;
 289         int len;
 290         int rc = 0;
 291
 292         /*
 293          * Alloc buffer array for commands (Tx or other types of commands).
 294          * For the command queue (#4), allocate command space + one big
 295          * command for scan, since scan command is very huge; the system will
 296          * not have two scans at the same time, so only one is needed.
 297          * For normal Tx queues (all other queues), no super-size command
 298          * space is needed.
 299          */
 300         len = sizeof(struct iwl_cmd) * slots_num;
 301         if (txq_id == IWL_CMD_QUEUE_NUM)
 302                 len +=  IWL_MAX_SCAN_SIZE;
 303         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 304         if (!txq->cmd)
 305                 return -ENOMEM;
 306
 307         /* Alloc driver data array and TFD circular buffer */
 308         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 309         if (rc) {
 310                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 311
 312                 return -ENOMEM;
 313         }
 314         txq->need_update = 0;
 315
 316         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 317          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 318         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 319
 320         /* Initialize queue's high/low-water marks, and head/tail indexes */
 321         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 322
 323         /* Tell device where to find queue */
 324         iwl4965_hw_tx_queue_init(priv, txq);
 325
 326         return 0;
 327 }
 328
 329 /**
 330  * iwl4965_tx_queue_free - Deallocate DMA queue.
 331  * @txq: Transmit queue to deallocate.
 332  *
 333  * Empty queue by removing and destroying all BD's.
 334  * Free all buffers.
 335  * 0-fill, but do not free "txq" descriptor structure.
 336  */
 337 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
 338 {
 339         struct iwl4965_queue *q = &txq->q;
 340         struct pci_dev *dev = priv->pci_dev;
 341         int len;
 342
 343         if (q->n_bd == 0)
 344                 return;
 345
 346         /* first, empty all BD's */
 347         for (; q->write_ptr != q->read_ptr;
 348              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 349                 iwl4965_hw_txq_free_tfd(priv, txq);
 350
 351         len = sizeof(struct iwl_cmd) * q->n_window;
 352         if (q->id == IWL_CMD_QUEUE_NUM)
 353                 len += IWL_MAX_SCAN_SIZE;
 354
 355         /* De-alloc array of command/tx buffers */
 356         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 357
 358         /* De-alloc circular buffer of TFDs */
 359         if (txq->q.n_bd)
 360                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 361                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 362
 363         /* De-alloc array of per-TFD driver data */
 364         if (txq->txb) {
 365                 kfree(txq->txb);
 366                 txq->txb = NULL;
 367         }
 368
 369         /* 0-fill queue descriptor structure */
 370         memset(txq, 0, sizeof(*txq));
 371 }
 372
 373 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 374
 375 /*************** STATION TABLE MANAGEMENT ****
 376  * mac80211 should be examined to determine if sta_info is duplicating
 377  * the functionality provided here
 378  */
 379
 380 /**************************************************************/
 381
 382 #if 0 /* temporary disable till we add real remove station */
 383 /**
 384  * iwl4965_remove_station - Remove driver's knowledge of station.
 385  *
 386  * NOTE:  This does not remove station from device's station table.
 387  */
 388 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 389 {
 390         int index = IWL_INVALID_STATION;
 391         int i;
 392         unsigned long flags;
 393
 394         spin_lock_irqsave(&priv->sta_lock, flags);
 395
 396         if (is_ap)
 397                 index = IWL_AP_ID;
 398         else if (is_broadcast_ether_addr(addr))
 399                 index = priv->hw_setting.bcast_sta_id;
 400         else
 401                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 402                         if (priv->stations[i].used &&
 403                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 404                                                 addr)) {
 405                                 index = i;
 406                                 break;
 407                         }
 408
 409         if (unlikely(index == IWL_INVALID_STATION))
 410                 goto out;
 411
 412         if (priv->stations[index].used) {
 413                 priv->stations[index].used = 0;
 414                 priv->num_stations--;
 415         }
 416
 417         BUG_ON(priv->num_stations < 0);
 418
 419 out:
 420         spin_unlock_irqrestore(&priv->sta_lock, flags);
 421         return 0;
 422 }
 423 #endif
 424
 425 /**
 426  * iwl4965_add_station_flags - Add station to tables in driver and device
 427  */
 428 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
 429                                 int is_ap, u8 flags, void *ht_data)
 430 {
 431         int i;
 432         int index = IWL_INVALID_STATION;
 433         struct iwl4965_station_entry *station;
 434         unsigned long flags_spin;
 435         DECLARE_MAC_BUF(mac);
 436
 437         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 438         if (is_ap)
 439                 index = IWL_AP_ID;
 440         else if (is_broadcast_ether_addr(addr))
 441                 index = priv->hw_setting.bcast_sta_id;
 442         else
 443                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 444                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 445                                                 addr)) {
 446                                 index = i;
 447                                 break;
 448                         }
 449
 450                         if (!priv->stations[i].used &&
 451                             index == IWL_INVALID_STATION)
 452                                 index = i;
 453                 }
 454
 455
 456         /* These two conditions have the same outcome, but keep them separate
 457           since they have different meanings */
 458         if (unlikely(index == IWL_INVALID_STATION)) {
 459                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 460                 return index;
 461         }
 462
 463         if (priv->stations[index].used &&
 464             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 465                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 466                 return index;
 467         }
 468
 469
 470         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 471         station = &priv->stations[index];
 472         station->used = 1;
 473         priv->num_stations++;
 474
 475         /* Set up the REPLY_ADD_STA command to send to device */
 476         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 477         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 478         station->sta.mode = 0;
 479         station->sta.sta.sta_id = index;
 480         station->sta.station_flags = 0;
 481
 482 #ifdef CONFIG_IWL4965_HT
 483         /* BCAST station and IBSS stations do not work in HT mode */
 484         if (index != priv->hw_setting.bcast_sta_id &&
 485             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 486                 iwl4965_set_ht_add_station(priv, index,
 487                                  (struct ieee80211_ht_info *) ht_data);
 488 #endif /*CONFIG_IWL4965_HT*/
 489
 490         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 491
 492         /* Add station to device's station table */
 493         iwl4965_send_add_station(priv, &station->sta, flags);
 494         return index;
 495
 496 }
 497
 498 /*************** DRIVER STATUS FUNCTIONS   *****/
 499
 500 static inline int iwl4965_is_ready(struct iwl_priv *priv)
 501 {
 502         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 503          * set but EXIT_PENDING is not */
 504         return test_bit(STATUS_READY, &priv->status) &&
 505                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 506                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 507 }
 508
 509 static inline int iwl4965_is_alive(struct iwl_priv *priv)
 510 {
 511         return test_bit(STATUS_ALIVE, &priv->status);
 512 }
 513
 514 static inline int iwl4965_is_init(struct iwl_priv *priv)
 515 {
 516         return test_bit(STATUS_INIT, &priv->status);
 517 }
 518
 519 static inline int iwl4965_is_rfkill(struct iwl_priv *priv)
 520 {
 521         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 522                test_bit(STATUS_RF_KILL_SW, &priv->status);
 523 }
 524
 525 static inline int iwl4965_is_ready_rf(struct iwl_priv *priv)
 526 {
 527
 528         if (iwl4965_is_rfkill(priv))
 529                 return 0;
 530
 531         return iwl4965_is_ready(priv);
 532 }
 533
 534 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 535
 536 /**
 537  * iwl4965_enqueue_hcmd - enqueue a uCode command
 538  * @priv: device private data point
 539  * @cmd: a point to the ucode command structure
 540  *
 541  * The function returns < 0 values to indicate the operation is
 542  * failed. On success, it turns the index (> 0) of command in the
 543  * command queue.
 544  */
 545 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 546 {
 547         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 548         struct iwl4965_queue *q = &txq->q;
 549         struct iwl4965_tfd_frame *tfd;
 550         u32 *control_flags;
 551         struct iwl_cmd *out_cmd;
 552         u32 idx;
 553         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 554         dma_addr_t phys_addr;
 555         int ret;
 556         unsigned long flags;
 557
 558         /* If any of the command structures end up being larger than
 559          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 560          * we will need to increase the size of the TFD entries */
 561         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 562                !(cmd->meta.flags & CMD_SIZE_HUGE));
 563
 564         if (iwl4965_is_rfkill(priv)) {
 565                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 566                 return -EIO;
 567         }
 568
 569         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 570                 IWL_ERROR("No space for Tx\n");
 571                 return -ENOSPC;
 572         }
 573
 574         spin_lock_irqsave(&priv->hcmd_lock, flags);
 575
 576         tfd = &txq->bd[q->write_ptr];
 577         memset(tfd, 0, sizeof(*tfd));
 578
 579         control_flags = (u32 *) tfd;
 580
 581         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 582         out_cmd = &txq->cmd[idx];
 583
 584         out_cmd->hdr.cmd = cmd->id;
 585         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 586         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 587
 588         /* At this point, the out_cmd now has all of the incoming cmd
 589          * information */
 590
 591         out_cmd->hdr.flags = 0;
 592         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 593                         INDEX_TO_SEQ(q->write_ptr));
 594         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 595                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 596
 597         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 598                         offsetof(struct iwl_cmd, hdr);
 599         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 600
 601         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 602                      "%d bytes at %d[%d]:%d\n",
 603                      get_cmd_string(out_cmd->hdr.cmd),
 604                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 605                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 606
 607         txq->need_update = 1;
 608
 609         /* Set up entry in queue's byte count circular buffer */
 610         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 611
 612         /* Increment and update queue's write index */
 613         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 614         iwl4965_tx_queue_update_write_ptr(priv, txq);
 615
 616         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 617         return ret ? ret : idx;
 618 }
 619
 620 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 621 {
 622         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
 623
 624         if (hw_decrypt)
 625                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 626         else
 627                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 628
 629 }
 630
 631 int iwl4965_send_statistics_request(struct iwl_priv *priv)
 632 {
 633         u32 flags = 0;
 634         return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 635                                       sizeof(flags), &flags);
 636 }
 637
 638 /**
 639  * iwl4965_rxon_add_station - add station into station table.
 640  *
 641  * there is only one AP station with id= IWL_AP_ID
 642  * NOTE: mutex must be held before calling this fnction
 643  */
 644 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
 645                                 const u8 *addr, int is_ap)
 646 {
 647         u8 sta_id;
 648
 649         /* Add station to device's station table */
 650 #ifdef CONFIG_IWL4965_HT
 651         struct ieee80211_conf *conf = &priv->hw->conf;
 652         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 653
 654         if ((is_ap) &&
 655             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 656             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 657                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 658                                                    0, cur_ht_config);
 659         else
 660 #endif /* CONFIG_IWL4965_HT */
 661                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 662                                                    0, NULL);
 663
 664         /* Set up default rate scaling table in device's station table */
 665         iwl4965_add_station(priv, addr, is_ap);
 666
 667         return sta_id;
 668 }
 669
 670 /**
 671  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 672  *
 673  * NOTE:  This is really only useful during development and can eventually
 674  * be #ifdef'd out once the driver is stable and folks aren't actively
 675  * making changes
 676  */
 677 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 678 {
 679         int error = 0;
 680         int counter = 1;
 681
 682         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 683                 error |= le32_to_cpu(rxon->flags &
 684                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 685                                  RXON_FLG_RADAR_DETECT_MSK));
 686                 if (error)
 687                         IWL_WARNING("check 24G fields %d | %d\n",
 688                                     counter++, error);
 689         } else {
 690                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 691                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 692                 if (error)
 693                         IWL_WARNING("check 52 fields %d | %d\n",
 694                                     counter++, error);
 695                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 696                 if (error)
 697                         IWL_WARNING("check 52 CCK %d | %d\n",
 698                                     counter++, error);
 699         }
 700         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 701         if (error)
 702                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 703
 704         /* make sure basic rates 6Mbps and 1Mbps are supported */
 705         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 706                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 707         if (error)
 708                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 709
 710         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 711         if (error)
 712                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 713
 714         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 715                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 716         if (error)
 717                 IWL_WARNING("check CCK and short slot %d | %d\n",
 718                             counter++, error);
 719
 720         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 721                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 722         if (error)
 723                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 724                             counter++, error);
 725
 726         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 727                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 728         if (error)
 729                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 730                             counter++, error);
 731
 732         if (error)
 733                 IWL_WARNING("Tuning to channel %d\n",
 734                             le16_to_cpu(rxon->channel));
 735
 736         if (error) {
 737                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 738                 return -1;
 739         }
 740         return 0;
 741 }
 742
 743 /**
 744  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 745  * @priv: staging_rxon is compared to active_rxon
 746  *
 747  * If the RXON structure is changing enough to require a new tune,
 748  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 749  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 750  */
 751 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 752 {
 753
 754         /* These items are only settable from the full RXON command */
 755         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 756             compare_ether_addr(priv->staging_rxon.bssid_addr,
 757                                priv->active_rxon.bssid_addr) ||
 758             compare_ether_addr(priv->staging_rxon.node_addr,
 759                                priv->active_rxon.node_addr) ||
 760             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 761                                priv->active_rxon.wlap_bssid_addr) ||
 762             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 763             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 764             (priv->staging_rxon.air_propagation !=
 765              priv->active_rxon.air_propagation) ||
 766             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 767              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 768             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 769              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 770             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 771             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 772                 return 1;
 773
 774         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 775          * be updated with the RXON_ASSOC command -- however only some
 776          * flag transitions are allowed using RXON_ASSOC */
 777
 778         /* Check if we are not switching bands */
 779         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 780             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 781                 return 1;
 782
 783         /* Check if we are switching association toggle */
 784         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 785                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 786                 return 1;
 787
 788         return 0;
 789 }
 790
 791 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
 792 {
 793         int rc = 0;
 794         struct iwl4965_rx_packet *res = NULL;
 795         struct iwl4965_rxon_assoc_cmd rxon_assoc;
 796         struct iwl_host_cmd cmd = {
 797                 .id = REPLY_RXON_ASSOC,
 798                 .len = sizeof(rxon_assoc),
 799                 .meta.flags = CMD_WANT_SKB,
 800                 .data = &rxon_assoc,
 801         };
 802         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
 803         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
 804
 805         if ((rxon1->flags == rxon2->flags) &&
 806             (rxon1->filter_flags == rxon2->filter_flags) &&
 807             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 808             (rxon1->ofdm_ht_single_stream_basic_rates ==
 809              rxon2->ofdm_ht_single_stream_basic_rates) &&
 810             (rxon1->ofdm_ht_dual_stream_basic_rates ==
 811              rxon2->ofdm_ht_dual_stream_basic_rates) &&
 812             (rxon1->rx_chain == rxon2->rx_chain) &&
 813             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 814                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 815                 return 0;
 816         }
 817
 818         rxon_assoc.flags = priv->staging_rxon.flags;
 819         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
 820         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
 821         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
 822         rxon_assoc.reserved = 0;
 823         rxon_assoc.ofdm_ht_single_stream_basic_rates =
 824             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
 825         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
 826             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
 827         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
 828
 829         rc = iwl_send_cmd_sync(priv, &cmd);
 830         if (rc)
 831                 return rc;
 832
 833         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
 834         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 835                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
 836                 rc = -EIO;
 837         }
 838
 839         priv->alloc_rxb_skb--;
 840         dev_kfree_skb_any(cmd.meta.u.skb);
 841
 842         return rc;
 843 }
 844
 845 /**
 846  * iwl4965_commit_rxon - commit staging_rxon to hardware
 847  *
 848  * The RXON command in staging_rxon is committed to the hardware and
 849  * the active_rxon structure is updated with the new data.  This
 850  * function correctly transitions out of the RXON_ASSOC_MSK state if
 851  * a HW tune is required based on the RXON structure changes.
 852  */
 853 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 854 {
 855         /* cast away the const for active_rxon in this function */
 856         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 857         DECLARE_MAC_BUF(mac);
 858         int rc = 0;
 859
 860         if (!iwl4965_is_alive(priv))
 861                 return -1;
 862
 863         /* always get timestamp with Rx frame */
 864         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 865
 866         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 867         if (rc) {
 868                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 869                 return -EINVAL;
 870         }
 871
 872         /* If we don't need to send a full RXON, we can use
 873          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 874          * and other flags for the current radio configuration. */
 875         if (!iwl4965_full_rxon_required(priv)) {
 876                 rc = iwl4965_send_rxon_assoc(priv);
 877                 if (rc) {
 878                         IWL_ERROR("Error setting RXON_ASSOC "
 879                                   "configuration (%d).\n", rc);
 880                         return rc;
 881                 }
 882
 883                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 884
 885                 return 0;
 886         }
 887
 888         /* station table will be cleared */
 889         priv->assoc_station_added = 0;
 890
 891 #ifdef CONFIG_IWL4965_SENSITIVITY
 892         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 893         if (!priv->error_recovering)
 894                 priv->start_calib = 0;
 895
 896         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 897 #endif /* CONFIG_IWL4965_SENSITIVITY */
 898
 899         /* If we are currently associated and the new config requires
 900          * an RXON_ASSOC and the new config wants the associated mask enabled,
 901          * we must clear the associated from the active configuration
 902          * before we apply the new config */
 903         if (iwl4965_is_associated(priv) &&
 904             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 905                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 906                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 907
 908                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 909                                       sizeof(struct iwl4965_rxon_cmd),
 910                                       &priv->active_rxon);
 911
 912                 /* If the mask clearing failed then we set
 913                  * active_rxon back to what it was previously */
 914                 if (rc) {
 915                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 916                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 917                                   "configuration (%d).\n", rc);
 918                         return rc;
 919                 }
 920         }
 921
 922         IWL_DEBUG_INFO("Sending RXON\n"
 923                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 924                        "* channel = %d\n"
 925                        "* bssid = %s\n",
 926                        ((priv->staging_rxon.filter_flags &
 927                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 928                        le16_to_cpu(priv->staging_rxon.channel),
 929                        print_mac(mac, priv->staging_rxon.bssid_addr));
 930
 931         iwl4965_set_rxon_hwcrypto(priv, priv->cfg->mod_params->hw_crypto);
 932         /* Apply the new configuration */
 933         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 934                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
 935         if (rc) {
 936                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 937                 return rc;
 938         }
 939
 940         iwlcore_clear_stations_table(priv);
 941
 942 #ifdef CONFIG_IWL4965_SENSITIVITY
 943         if (!priv->error_recovering)
 944                 priv->start_calib = 0;
 945
 946         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 947         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 948 #endif /* CONFIG_IWL4965_SENSITIVITY */
 949
 950         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 951
 952         /* If we issue a new RXON command which required a tune then we must
 953          * send a new TXPOWER command or we won't be able to Tx any frames */
 954         rc = iwl4965_hw_reg_send_txpower(priv);
 955         if (rc) {
 956                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 957                 return rc;
 958         }
 959
 960         /* Add the broadcast address so we can send broadcast frames */
 961         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
 962             IWL_INVALID_STATION) {
 963                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 964                 return -EIO;
 965         }
 966
 967         /* If we have set the ASSOC_MSK and we are in BSS mode then
 968          * add the IWL_AP_ID to the station rate table */
 969         if (iwl4965_is_associated(priv) &&
 970             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 971                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 972                     == IWL_INVALID_STATION) {
 973                         IWL_ERROR("Error adding AP address for transmit.\n");
 974                         return -EIO;
 975                 }
 976                 priv->assoc_station_added = 1;
 977         }
 978
 979         return 0;
 980 }
 981
 982 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 983 {
 984         struct iwl4965_bt_cmd bt_cmd = {
 985                 .flags = 3,
 986                 .lead_time = 0xAA,
 987                 .max_kill = 1,
 988                 .kill_ack_mask = 0,
 989                 .kill_cts_mask = 0,
 990         };
 991
 992         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 993                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 994 }
 995
 996 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 997 {
 998         int rc = 0;
 999         struct iwl4965_rx_packet *res;
1000         struct iwl_host_cmd cmd = {
1001                 .id = REPLY_SCAN_ABORT_CMD,
1002                 .meta.flags = CMD_WANT_SKB,
1003         };
1004
1005         /* If there isn't a scan actively going on in the hardware
1006          * then we are in between scan bands and not actually
1007          * actively scanning, so don't send the abort command */
1008         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1009                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1010                 return 0;
1011         }
1012
1013         rc = iwl_send_cmd_sync(priv, &cmd);
1014         if (rc) {
1015                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1016                 return rc;
1017         }
1018
1019         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1020         if (res->u.status != CAN_ABORT_STATUS) {
1021                 /* The scan abort will return 1 for success or
1022                  * 2 for "failure".  A failure condition can be
1023                  * due to simply not being in an active scan which
1024                  * can occur if we send the scan abort before we
1025                  * the microcode has notified us that a scan is
1026                  * completed. */
1027                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1028                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1029                 clear_bit(STATUS_SCAN_HW, &priv->status);
1030         }
1031
1032         dev_kfree_skb_any(cmd.meta.u.skb);
1033
1034         return rc;
1035 }
1036
1037 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
1038                                         struct iwl_cmd *cmd,
1039                                         struct sk_buff *skb)
1040 {
1041         return 1;
1042 }
1043
1044 /*
1045  * CARD_STATE_CMD
1046  *
1047  * Use: Sets the device's internal card state to enable, disable, or halt
1048  *
1049  * When in the 'enable' state the card operates as normal.
1050  * When in the 'disable' state, the card enters into a low power mode.
1051  * When in the 'halt' state, the card is shut down and must be fully
1052  * restarted to come back on.
1053  */
1054 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1055 {
1056         struct iwl_host_cmd cmd = {
1057                 .id = REPLY_CARD_STATE_CMD,
1058                 .len = sizeof(u32),
1059                 .data = &flags,
1060                 .meta.flags = meta_flag,
1061         };
1062
1063         if (meta_flag & CMD_ASYNC)
1064                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1065
1066         return iwl_send_cmd(priv, &cmd);
1067 }
1068
1069 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
1070                                      struct iwl_cmd *cmd, struct sk_buff *skb)
1071 {
1072         struct iwl4965_rx_packet *res = NULL;
1073
1074         if (!skb) {
1075                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1076                 return 1;
1077         }
1078
1079         res = (struct iwl4965_rx_packet *)skb->data;
1080         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1081                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1082                           res->hdr.flags);
1083                 return 1;
1084         }
1085
1086         switch (res->u.add_sta.status) {
1087         case ADD_STA_SUCCESS_MSK:
1088                 break;
1089         default:
1090                 break;
1091         }
1092
1093         /* We didn't cache the SKB; let the caller free it */
1094         return 1;
1095 }
1096
1097 int iwl4965_send_add_station(struct iwl_priv *priv,
1098                          struct iwl4965_addsta_cmd *sta, u8 flags)
1099 {
1100         struct iwl4965_rx_packet *res = NULL;
1101         int rc = 0;
1102         struct iwl_host_cmd cmd = {
1103                 .id = REPLY_ADD_STA,
1104                 .len = sizeof(struct iwl4965_addsta_cmd),
1105                 .meta.flags = flags,
1106                 .data = sta,
1107         };
1108
1109         if (flags & CMD_ASYNC)
1110                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1111         else
1112                 cmd.meta.flags |= CMD_WANT_SKB;
1113
1114         rc = iwl_send_cmd(priv, &cmd);
1115
1116         if (rc || (flags & CMD_ASYNC))
1117                 return rc;
1118
1119         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1120         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1121                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1122                           res->hdr.flags);
1123                 rc = -EIO;
1124         }
1125
1126         if (rc == 0) {
1127                 switch (res->u.add_sta.status) {
1128                 case ADD_STA_SUCCESS_MSK:
1129                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1130                         break;
1131                 default:
1132                         rc = -EIO;
1133                         IWL_WARNING("REPLY_ADD_STA failed\n");
1134                         break;
1135                 }
1136         }
1137
1138         priv->alloc_rxb_skb--;
1139         dev_kfree_skb_any(cmd.meta.u.skb);
1140
1141         return rc;
1142 }
1143
1144 static int iwl4965_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
1145                                    struct ieee80211_key_conf *keyconf,
1146                                    u8 sta_id)
1147 {
1148         unsigned long flags;
1149         __le16 key_flags = 0;
1150
1151         key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
1152         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1153
1154         if (sta_id == priv->hw_setting.bcast_sta_id)
1155                 key_flags |= STA_KEY_MULTICAST_MSK;
1156
1157         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1158         keyconf->hw_key_idx = keyconf->keyidx;
1159
1160         key_flags &= ~STA_KEY_FLG_INVALID;
1161
1162         spin_lock_irqsave(&priv->sta_lock, flags);
1163         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1164         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1165
1166         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1167                keyconf->keylen);
1168
1169         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1170                keyconf->keylen);
1171
1172         priv->stations[sta_id].sta.key.key_offset
1173                         = (sta_id % STA_KEY_MAX_NUM);/*FIXME*/
1174         priv->stations[sta_id].sta.key.key_flags = key_flags;
1175         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1176         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1177
1178         spin_unlock_irqrestore(&priv->sta_lock, flags);
1179
1180         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1181         return iwl4965_send_add_station(priv,
1182                                 &priv->stations[sta_id].sta, CMD_ASYNC);
1183 }
1184
1185 static int iwl4965_set_tkip_dynamic_key_info(struct iwl_priv *priv,
1186                                    struct ieee80211_key_conf *keyconf,
1187                                    u8 sta_id)
1188 {
1189         unsigned long flags;
1190         int ret = 0;
1191
1192         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1193         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1194         keyconf->hw_key_idx = keyconf->keyidx;
1195
1196         spin_lock_irqsave(&priv->sta_lock, flags);
1197
1198         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1199         priv->stations[sta_id].keyinfo.conf = keyconf;
1200         priv->stations[sta_id].keyinfo.keylen = 16;
1201
1202         /* This copy is acutally not needed: we get the key with each TX */
1203         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
1204
1205         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
1206
1207         spin_unlock_irqrestore(&priv->sta_lock, flags);
1208
1209         return ret;
1210 }
1211
1212 static int iwl4965_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1213 {
1214         unsigned long flags;
1215
1216         spin_lock_irqsave(&priv->sta_lock, flags);
1217         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1218         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1219         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1220         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1221         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1222         spin_unlock_irqrestore(&priv->sta_lock, flags);
1223
1224         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1225         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1226         return 0;
1227 }
1228
1229 static int iwl4965_set_dynamic_key(struct iwl_priv *priv,
1230                                 struct ieee80211_key_conf *key, u8 sta_id)
1231 {
1232         int ret;
1233
1234         switch (key->alg) {
1235         case ALG_CCMP:
1236                 ret = iwl4965_set_ccmp_dynamic_key_info(priv, key, sta_id);
1237                 break;
1238         case ALG_TKIP:
1239                 ret = iwl4965_set_tkip_dynamic_key_info(priv, key, sta_id);
1240                 break;
1241         case ALG_WEP:
1242                 ret = -EOPNOTSUPP;
1243                 break;
1244         default:
1245                 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
1246                 ret = -EINVAL;
1247         }
1248
1249         return ret;
1250 }
1251
1252 static int iwl4965_remove_static_key(struct iwl_priv *priv)
1253 {
1254         int ret = -EOPNOTSUPP;
1255
1256         return ret;
1257 }
1258
1259 static int iwl4965_set_static_key(struct iwl_priv *priv,
1260                                 struct ieee80211_key_conf *key)
1261 {
1262         if (key->alg == ALG_WEP)
1263                 return -EOPNOTSUPP;
1264
1265         IWL_ERROR("Static key invalid: alg %d\n", key->alg);
1266         return -EINVAL;
1267 }
1268
1269 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1270 {
1271         struct list_head *element;
1272
1273         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1274                        priv->frames_count);
1275
1276         while (!list_empty(&priv->free_frames)) {
1277                 element = priv->free_frames.next;
1278                 list_del(element);
1279                 kfree(list_entry(element, struct iwl4965_frame, list));
1280                 priv->frames_count--;
1281         }
1282
1283         if (priv->frames_count) {
1284                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1285                             priv->frames_count);
1286                 priv->frames_count = 0;
1287         }
1288 }
1289
1290 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1291 {
1292         struct iwl4965_frame *frame;
1293         struct list_head *element;
1294         if (list_empty(&priv->free_frames)) {
1295                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1296                 if (!frame) {
1297                         IWL_ERROR("Could not allocate frame!\n");
1298                         return NULL;
1299                 }
1300
1301                 priv->frames_count++;
1302                 return frame;
1303         }
1304
1305         element = priv->free_frames.next;
1306         list_del(element);
1307         return list_entry(element, struct iwl4965_frame, list);
1308 }
1309
1310 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1311 {
1312         memset(frame, 0, sizeof(*frame));
1313         list_add(&frame->list, &priv->free_frames);
1314 }
1315
1316 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1317                                 struct ieee80211_hdr *hdr,
1318                                 const u8 *dest, int left)
1319 {
1320
1321         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1322             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1323              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1324                 return 0;
1325
1326         if (priv->ibss_beacon->len > left)
1327                 return 0;
1328
1329         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1330
1331         return priv->ibss_beacon->len;
1332 }
1333
1334 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1335 {
1336         u8 i;
1337
1338         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1339              i = iwl4965_rates[i].next_ieee) {
1340                 if (rate_mask & (1 << i))
1341                         return iwl4965_rates[i].plcp;
1342         }
1343
1344         return IWL_RATE_INVALID;
1345 }
1346
1347 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1348 {
1349         struct iwl4965_frame *frame;
1350         unsigned int frame_size;
1351         int rc;
1352         u8 rate;
1353
1354         frame = iwl4965_get_free_frame(priv);
1355
1356         if (!frame) {
1357                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1358                           "command.\n");
1359                 return -ENOMEM;
1360         }
1361
1362         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1363                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1364                                                 0xFF0);
1365                 if (rate == IWL_INVALID_RATE)
1366                         rate = IWL_RATE_6M_PLCP;
1367         } else {
1368                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1369                 if (rate == IWL_INVALID_RATE)
1370                         rate = IWL_RATE_1M_PLCP;
1371         }
1372
1373         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1374
1375         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1376                               &frame->u.cmd[0]);
1377
1378         iwl4965_free_frame(priv, frame);
1379
1380         return rc;
1381 }
1382
1383 /******************************************************************************
1384  *
1385  * Misc. internal state and helper functions
1386  *
1387  ******************************************************************************/
1388
1389 static void iwl4965_unset_hw_setting(struct iwl_priv *priv)
1390 {
1391         if (priv->hw_setting.shared_virt)
1392                 pci_free_consistent(priv->pci_dev,
1393                                     sizeof(struct iwl4965_shared),
1394                                     priv->hw_setting.shared_virt,
1395                                     priv->hw_setting.shared_phys);
1396 }
1397
1398 /**
1399  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1400  *
1401  * return : set the bit for each supported rate insert in ie
1402  */
1403 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1404                                     u16 basic_rate, int *left)
1405 {
1406         u16 ret_rates = 0, bit;
1407         int i;
1408         u8 *cnt = ie;
1409         u8 *rates = ie + 1;
1410
1411         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1412                 if (bit & supported_rate) {
1413                         ret_rates |= bit;
1414                         rates[*cnt] = iwl4965_rates[i].ieee |
1415                                 ((bit & basic_rate) ? 0x80 : 0x00);
1416                         (*cnt)++;
1417                         (*left)--;
1418                         if ((*left <= 0) ||
1419                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1420                                 break;
1421                 }
1422         }
1423
1424         return ret_rates;
1425 }
1426
1427 /**
1428  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1429  */
1430 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1431                                   enum ieee80211_band band,
1432                                   struct ieee80211_mgmt *frame,
1433                                   int left, int is_direct)
1434 {
1435         int len = 0;
1436         u8 *pos = NULL;
1437         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1438 #ifdef CONFIG_IWL4965_HT
1439         const struct ieee80211_supported_band *sband =
1440                                                 iwl4965_get_hw_mode(priv, band);
1441 #endif /* CONFIG_IWL4965_HT */
1442
1443         /* Make sure there is enough space for the probe request,
1444          * two mandatory IEs and the data */
1445         left -= 24;
1446         if (left < 0)
1447                 return 0;
1448         len += 24;
1449
1450         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1451         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1452         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1453         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1454         frame->seq_ctrl = 0;
1455
1456         /* fill in our indirect SSID IE */
1457         /* ...next IE... */
1458
1459         left -= 2;
1460         if (left < 0)
1461                 return 0;
1462         len += 2;
1463         pos = &(frame->u.probe_req.variable[0]);
1464         *pos++ = WLAN_EID_SSID;
1465         *pos++ = 0;
1466
1467         /* fill in our direct SSID IE... */
1468         if (is_direct) {
1469                 /* ...next IE... */
1470                 left -= 2 + priv->essid_len;
1471                 if (left < 0)
1472                         return 0;
1473                 /* ... fill it in... */
1474                 *pos++ = WLAN_EID_SSID;
1475                 *pos++ = priv->essid_len;
1476                 memcpy(pos, priv->essid, priv->essid_len);
1477                 pos += priv->essid_len;
1478                 len += 2 + priv->essid_len;
1479         }
1480
1481         /* fill in supported rate */
1482         /* ...next IE... */
1483         left -= 2;
1484         if (left < 0)
1485                 return 0;
1486
1487         /* ... fill it in... */
1488         *pos++ = WLAN_EID_SUPP_RATES;
1489         *pos = 0;
1490
1491         /* exclude 60M rate */
1492         active_rates = priv->rates_mask;
1493         active_rates &= ~IWL_RATE_60M_MASK;
1494
1495         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1496
1497         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1498         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1499                         active_rate_basic, &left);
1500         active_rates &= ~ret_rates;
1501
1502         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1503                                  active_rate_basic, &left);
1504         active_rates &= ~ret_rates;
1505
1506         len += 2 + *pos;
1507         pos += (*pos) + 1;
1508         if (active_rates == 0)
1509                 goto fill_end;
1510
1511         /* fill in supported extended rate */
1512         /* ...next IE... */
1513         left -= 2;
1514         if (left < 0)
1515                 return 0;
1516         /* ... fill it in... */
1517         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1518         *pos = 0;
1519         iwl4965_supported_rate_to_ie(pos, active_rates,
1520                                  active_rate_basic, &left);
1521         if (*pos > 0)
1522                 len += 2 + *pos;
1523
1524 #ifdef CONFIG_IWL4965_HT
1525         if (sband && sband->ht_info.ht_supported) {
1526                 struct ieee80211_ht_cap *ht_cap;
1527                 pos += (*pos) + 1;
1528                 *pos++ = WLAN_EID_HT_CAPABILITY;
1529                 *pos++ = sizeof(struct ieee80211_ht_cap);
1530                 ht_cap = (struct ieee80211_ht_cap *)pos;
1531                 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1532                 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1533                 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1534                                             IEEE80211_HT_CAP_AMPDU_FACTOR) |
1535                                             ((sband->ht_info.ampdu_density << 2) &
1536                                             IEEE80211_HT_CAP_AMPDU_DENSITY);
1537                 len += 2 + sizeof(struct ieee80211_ht_cap);
1538         }
1539 #endif  /*CONFIG_IWL4965_HT */
1540
1541  fill_end:
1542         return (u16)len;
1543 }
1544
1545 /*
1546  * QoS  support
1547 */
1548 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1549                                        struct iwl4965_qosparam_cmd *qos)
1550 {
1551
1552         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1553                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1554 }
1555
1556 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1557 {
1558         unsigned long flags;
1559
1560         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1561                 return;
1562
1563         if (!priv->qos_data.qos_enable)
1564                 return;
1565
1566         spin_lock_irqsave(&priv->lock, flags);
1567         priv->qos_data.def_qos_parm.qos_flags = 0;
1568
1569         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1570             !priv->qos_data.qos_cap.q_AP.txop_request)
1571                 priv->qos_data.def_qos_parm.qos_flags |=
1572                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1573         if (priv->qos_data.qos_active)
1574                 priv->qos_data.def_qos_parm.qos_flags |=
1575                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1576
1577 #ifdef CONFIG_IWL4965_HT
1578         if (priv->current_ht_config.is_ht)
1579                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1580 #endif /* CONFIG_IWL4965_HT */
1581
1582         spin_unlock_irqrestore(&priv->lock, flags);
1583
1584         if (force || iwl4965_is_associated(priv)) {
1585                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1586                                 priv->qos_data.qos_active,
1587                                 priv->qos_data.def_qos_parm.qos_flags);
1588
1589                 iwl4965_send_qos_params_command(priv,
1590                                 &(priv->qos_data.def_qos_parm));
1591         }
1592 }
1593
1594 /*
1595  * Power management (not Tx power!) functions
1596  */
1597 #define MSEC_TO_USEC 1024
1598
1599 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1600 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1601 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1602 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1603                                      __constant_cpu_to_le32(X1), \
1604                                      __constant_cpu_to_le32(X2), \
1605                                      __constant_cpu_to_le32(X3), \
1606                                      __constant_cpu_to_le32(X4)}
1607
1608
1609 /* default power management (not Tx power) table values */
1610 /* for tim  0-10 */
1611 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1612         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1613         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1614         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1615         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1616         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1617         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1618 };
1619
1620 /* for tim > 10 */
1621 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1622         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1623         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1624                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1625         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1626                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1627         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1628                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1629         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1630         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1631                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1632 };
1633
1634 int iwl4965_power_init_handle(struct iwl_priv *priv)
1635 {
1636         int rc = 0, i;
1637         struct iwl4965_power_mgr *pow_data;
1638         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
1639         u16 pci_pm;
1640
1641         IWL_DEBUG_POWER("Initialize power \n");
1642
1643         pow_data = &(priv->power_data);
1644
1645         memset(pow_data, 0, sizeof(*pow_data));
1646
1647         pow_data->active_index = IWL_POWER_RANGE_0;
1648         pow_data->dtim_val = 0xffff;
1649
1650         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1651         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1652
1653         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1654         if (rc != 0)
1655                 return 0;
1656         else {
1657                 struct iwl4965_powertable_cmd *cmd;
1658
1659                 IWL_DEBUG_POWER("adjust power command flags\n");
1660
1661                 for (i = 0; i < IWL_POWER_AC; i++) {
1662                         cmd = &pow_data->pwr_range_0[i].cmd;
1663
1664                         if (pci_pm & 0x1)
1665                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1666                         else
1667                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1668                 }
1669         }
1670         return rc;
1671 }
1672
1673 static int iwl4965_update_power_cmd(struct iwl_priv *priv,
1674                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
1675 {
1676         int rc = 0, i;
1677         u8 skip;
1678         u32 max_sleep = 0;
1679         struct iwl4965_power_vec_entry *range;
1680         u8 period = 0;
1681         struct iwl4965_power_mgr *pow_data;
1682
1683         if (mode > IWL_POWER_INDEX_5) {
1684                 IWL_DEBUG_POWER("Error invalid power mode \n");
1685                 return -1;
1686         }
1687         pow_data = &(priv->power_data);
1688
1689         if (pow_data->active_index == IWL_POWER_RANGE_0)
1690                 range = &pow_data->pwr_range_0[0];
1691         else
1692                 range = &pow_data->pwr_range_1[1];
1693
1694         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
1695
1696 #ifdef IWL_MAC80211_DISABLE
1697         if (priv->assoc_network != NULL) {
1698                 unsigned long flags;
1699
1700                 period = priv->assoc_network->tim.tim_period;
1701         }
1702 #endif  /*IWL_MAC80211_DISABLE */
1703         skip = range[mode].no_dtim;
1704
1705         if (period == 0) {
1706                 period = 1;
1707                 skip = 0;
1708         }
1709
1710         if (skip == 0) {
1711                 max_sleep = period;
1712                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1713         } else {
1714                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1715                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1716                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1717         }
1718
1719         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1720                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1721                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1722         }
1723
1724         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1725         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1726         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1727         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1728                         le32_to_cpu(cmd->sleep_interval[0]),
1729                         le32_to_cpu(cmd->sleep_interval[1]),
1730                         le32_to_cpu(cmd->sleep_interval[2]),
1731                         le32_to_cpu(cmd->sleep_interval[3]),
1732                         le32_to_cpu(cmd->sleep_interval[4]));
1733
1734         return rc;
1735 }
1736
1737 static int iwl4965_send_power_mode(struct iwl_priv *priv, u32 mode)
1738 {
1739         u32 uninitialized_var(final_mode);
1740         int rc;
1741         struct iwl4965_powertable_cmd cmd;
1742
1743         /* If on battery, set to 3,
1744          * if plugged into AC power, set to CAM ("continuously aware mode"),
1745          * else user level */
1746         switch (mode) {
1747         case IWL_POWER_BATTERY:
1748                 final_mode = IWL_POWER_INDEX_3;
1749                 break;
1750         case IWL_POWER_AC:
1751                 final_mode = IWL_POWER_MODE_CAM;
1752                 break;
1753         default:
1754                 final_mode = mode;
1755                 break;
1756         }
1757
1758         cmd.keep_alive_beacons = 0;
1759
1760         iwl4965_update_power_cmd(priv, &cmd, final_mode);
1761
1762         rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
1763
1764         if (final_mode == IWL_POWER_MODE_CAM)
1765                 clear_bit(STATUS_POWER_PMI, &priv->status);
1766         else
1767                 set_bit(STATUS_POWER_PMI, &priv->status);
1768
1769         return rc;
1770 }
1771
1772 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1773 {
1774         /* Filter incoming packets to determine if they are targeted toward
1775          * this network, discarding packets coming from ourselves */
1776         switch (priv->iw_mode) {
1777         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
1778                 /* packets from our adapter are dropped (echo) */
1779                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1780                         return 0;
1781                 /* {broad,multi}cast packets to our IBSS go through */
1782                 if (is_multicast_ether_addr(header->addr1))
1783                         return !compare_ether_addr(header->addr3, priv->bssid);
1784                 /* packets to our adapter go through */
1785                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1786         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1787                 /* packets from our adapter are dropped (echo) */
1788                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1789                         return 0;
1790                 /* {broad,multi}cast packets to our BSS go through */
1791                 if (is_multicast_ether_addr(header->addr1))
1792                         return !compare_ether_addr(header->addr2, priv->bssid);
1793                 /* packets to our adapter go through */
1794                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1795         }
1796
1797         return 1;
1798 }
1799
1800 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1801
1802 static const char *iwl4965_get_tx_fail_reason(u32 status)
1803 {
1804         switch (status & TX_STATUS_MSK) {
1805         case TX_STATUS_SUCCESS:
1806                 return "SUCCESS";
1807                 TX_STATUS_ENTRY(SHORT_LIMIT);
1808                 TX_STATUS_ENTRY(LONG_LIMIT);
1809                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1810                 TX_STATUS_ENTRY(MGMNT_ABORT);
1811                 TX_STATUS_ENTRY(NEXT_FRAG);
1812                 TX_STATUS_ENTRY(LIFE_EXPIRE);
1813                 TX_STATUS_ENTRY(DEST_PS);
1814                 TX_STATUS_ENTRY(ABORTED);
1815                 TX_STATUS_ENTRY(BT_RETRY);
1816                 TX_STATUS_ENTRY(STA_INVALID);
1817                 TX_STATUS_ENTRY(FRAG_DROPPED);
1818                 TX_STATUS_ENTRY(TID_DISABLE);
1819                 TX_STATUS_ENTRY(FRAME_FLUSHED);
1820                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1821                 TX_STATUS_ENTRY(TX_LOCKED);
1822                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1823         }
1824
1825         return "UNKNOWN";
1826 }
1827
1828 /**
1829  * iwl4965_scan_cancel - Cancel any currently executing HW scan
1830  *
1831  * NOTE: priv->mutex is not required before calling this function
1832  */
1833 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1834 {
1835         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1836                 clear_bit(STATUS_SCANNING, &priv->status);
1837                 return 0;
1838         }
1839
1840         if (test_bit(STATUS_SCANNING, &priv->status)) {
1841                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1842                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1843                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1844                         queue_work(priv->workqueue, &priv->abort_scan);
1845
1846                 } else
1847                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1848
1849                 return test_bit(STATUS_SCANNING, &priv->status);
1850         }
1851
1852         return 0;
1853 }
1854
1855 /**
1856  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1857  * @ms: amount of time to wait (in milliseconds) for scan to abort
1858  *
1859  * NOTE: priv->mutex must be held before calling this function
1860  */
1861 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1862 {
1863         unsigned long now = jiffies;
1864         int ret;
1865
1866         ret = iwl4965_scan_cancel(priv);
1867         if (ret && ms) {
1868                 mutex_unlock(&priv->mutex);
1869                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1870                                 test_bit(STATUS_SCANNING, &priv->status))
1871                         msleep(1);
1872                 mutex_lock(&priv->mutex);
1873
1874                 return test_bit(STATUS_SCANNING, &priv->status);
1875         }
1876
1877         return ret;
1878 }
1879
1880 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1881 {
1882         /* Reset ieee stats */
1883
1884         /* We don't reset the net_device_stats (ieee->stats) on
1885          * re-association */
1886
1887         priv->last_seq_num = -1;
1888         priv->last_frag_num = -1;
1889         priv->last_packet_time = 0;
1890
1891         iwl4965_scan_cancel(priv);
1892 }
1893
1894 #define MAX_UCODE_BEACON_INTERVAL       4096
1895 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1896
1897 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1898 {
1899         u16 new_val = 0;
1900         u16 beacon_factor = 0;
1901
1902         beacon_factor =
1903             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1904                 / MAX_UCODE_BEACON_INTERVAL;
1905         new_val = beacon_val / beacon_factor;
1906
1907         return cpu_to_le16(new_val);
1908 }
1909
1910 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1911 {
1912         u64 interval_tm_unit;
1913         u64 tsf, result;
1914         unsigned long flags;
1915         struct ieee80211_conf *conf = NULL;
1916         u16 beacon_int = 0;
1917
1918         conf = ieee80211_get_hw_conf(priv->hw);
1919
1920         spin_lock_irqsave(&priv->lock, flags);
1921         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
1922         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
1923
1924         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1925
1926         tsf = priv->timestamp1;
1927         tsf = ((tsf << 32) | priv->timestamp0);
1928
1929         beacon_int = priv->beacon_int;
1930         spin_unlock_irqrestore(&priv->lock, flags);
1931
1932         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1933                 if (beacon_int == 0) {
1934                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1935                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1936                 } else {
1937                         priv->rxon_timing.beacon_interval =
1938                                 cpu_to_le16(beacon_int);
1939                         priv->rxon_timing.beacon_interval =
1940                             iwl4965_adjust_beacon_interval(
1941                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1942                 }
1943
1944                 priv->rxon_timing.atim_window = 0;
1945         } else {
1946                 priv->rxon_timing.beacon_interval =
1947                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1948                 /* TODO: we need to get atim_window from upper stack
1949                  * for now we set to 0 */
1950                 priv->rxon_timing.atim_window = 0;
1951         }
1952
1953         interval_tm_unit =
1954                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1955         result = do_div(tsf, interval_tm_unit);
1956         priv->rxon_timing.beacon_init_val =
1957             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1958
1959         IWL_DEBUG_ASSOC
1960             ("beacon interval %d beacon timer %d beacon tim %d\n",
1961                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1962                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1963                 le16_to_cpu(priv->rxon_timing.atim_window));
1964 }
1965
1966 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1967 {
1968         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1969                 IWL_ERROR("APs don't scan.\n");
1970                 return 0;
1971         }
1972
1973         if (!iwl4965_is_ready_rf(priv)) {
1974                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1975                 return -EIO;
1976         }
1977
1978         if (test_bit(STATUS_SCANNING, &priv->status)) {
1979                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1980                 return -EAGAIN;
1981         }
1982
1983         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1984                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1985                                "Queuing.\n");
1986                 return -EAGAIN;
1987         }
1988
1989         IWL_DEBUG_INFO("Starting scan...\n");
1990         priv->scan_bands = 2;
1991         set_bit(STATUS_SCANNING, &priv->status);
1992         priv->scan_start = jiffies;
1993         priv->scan_pass_start = priv->scan_start;
1994
1995         queue_work(priv->workqueue, &priv->request_scan);
1996
1997         return 0;
1998 }
1999
2000
2001 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
2002                                           enum ieee80211_band band)
2003 {
2004         if (band == IEEE80211_BAND_5GHZ) {
2005                 priv->staging_rxon.flags &=
2006                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2007                       | RXON_FLG_CCK_MSK);
2008                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2009         } else {
2010                 /* Copied from iwl4965_bg_post_associate() */
2011                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2012                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2013                 else
2014                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2015
2016                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2017                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2018
2019                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2020                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2021                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2022         }
2023 }
2024
2025 /*
2026  * initialize rxon structure with default values from eeprom
2027  */
2028 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
2029 {
2030         const struct iwl_channel_info *ch_info;
2031
2032         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2033
2034         switch (priv->iw_mode) {
2035         case IEEE80211_IF_TYPE_AP:
2036                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2037                 break;
2038
2039         case IEEE80211_IF_TYPE_STA:
2040                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2041                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2042                 break;
2043
2044         case IEEE80211_IF_TYPE_IBSS:
2045                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2046                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2047                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2048                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2049                 break;
2050
2051         case IEEE80211_IF_TYPE_MNTR:
2052                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2053                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2054                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2055                 break;
2056         }
2057
2058 #if 0
2059         /* TODO:  Figure out when short_preamble would be set and cache from
2060          * that */
2061         if (!hw_to_local(priv->hw)->short_preamble)
2062                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2063         else
2064                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2065 #endif
2066
2067         ch_info = iwl_get_channel_info(priv, priv->band,
2068                                        le16_to_cpu(priv->staging_rxon.channel));
2069
2070         if (!ch_info)
2071                 ch_info = &priv->channel_info[0];
2072
2073         /*
2074          * in some case A channels are all non IBSS
2075          * in this case force B/G channel
2076          */
2077         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2078             !(is_channel_ibss(ch_info)))
2079                 ch_info = &priv->channel_info[0];
2080
2081         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2082         priv->band = ch_info->band;
2083
2084         iwl4965_set_flags_for_phymode(priv, priv->band);
2085
2086         priv->staging_rxon.ofdm_basic_rates =
2087             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2088         priv->staging_rxon.cck_basic_rates =
2089             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2090
2091         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2092                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2093         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2094         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2095         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2096         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2097         iwl4965_set_rxon_chain(priv);
2098 }
2099
2100 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
2101 {
2102         if (mode == IEEE80211_IF_TYPE_IBSS) {
2103                 const struct iwl_channel_info *ch_info;
2104
2105                 ch_info = iwl_get_channel_info(priv,
2106                         priv->band,
2107                         le16_to_cpu(priv->staging_rxon.channel));
2108
2109                 if (!ch_info || !is_channel_ibss(ch_info)) {
2110                         IWL_ERROR("channel %d not IBSS channel\n",
2111                                   le16_to_cpu(priv->staging_rxon.channel));
2112                         return -EINVAL;
2113                 }
2114         }
2115
2116         priv->iw_mode = mode;
2117
2118         iwl4965_connection_init_rx_config(priv);
2119         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2120
2121         iwlcore_clear_stations_table(priv);
2122
2123         /* dont commit rxon if rf-kill is on*/
2124         if (!iwl4965_is_ready_rf(priv))
2125                 return -EAGAIN;
2126
2127         cancel_delayed_work(&priv->scan_check);
2128         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2129                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2130                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2131                 return -EAGAIN;
2132         }
2133
2134         iwl4965_commit_rxon(priv);
2135
2136         return 0;
2137 }
2138
2139 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2140                                       struct ieee80211_tx_control *ctl,
2141                                       struct iwl_cmd *cmd,
2142                                       struct sk_buff *skb_frag,
2143                                       int sta_id)
2144 {
2145         struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
2146
2147         switch (keyinfo->alg) {
2148         case ALG_CCMP:
2149                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2150                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2151                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2152                         cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
2153                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2154                 break;
2155
2156         case ALG_TKIP:
2157                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2158                 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
2159                         IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
2160                 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
2161                 break;
2162
2163         case ALG_WEP:
2164                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2165                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2166
2167                 if (keyinfo->keylen == 13)
2168                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2169
2170                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2171
2172                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2173                              "with key %d\n", ctl->key_idx);
2174                 break;
2175
2176         default:
2177                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2178                 break;
2179         }
2180 }
2181
2182 /*
2183  * handle build REPLY_TX command notification.
2184  */
2185 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
2186                                   struct iwl_cmd *cmd,
2187                                   struct ieee80211_tx_control *ctrl,
2188                                   struct ieee80211_hdr *hdr,
2189                                   int is_unicast, u8 std_id)
2190 {
2191         __le16 *qc;
2192         u16 fc = le16_to_cpu(hdr->frame_control);
2193         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2194
2195         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2196         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2197                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2198                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2199                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2200                 if (ieee80211_is_probe_response(fc) &&
2201                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2202                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2203         } else {
2204                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2205                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2206         }
2207
2208         if (ieee80211_is_back_request(fc))
2209                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2210
2211
2212         cmd->cmd.tx.sta_id = std_id;
2213         if (ieee80211_get_morefrag(hdr))
2214                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2215
2216         qc = ieee80211_get_qos_ctrl(hdr);
2217         if (qc) {
2218                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2219                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2220         } else
2221                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2222
2223         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2224                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2225                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2226         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2227                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2228                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2229         }
2230
2231         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2232                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2233
2234         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2235         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2236                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2237                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2238                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2239                 else
2240                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2241         } else
2242                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2243
2244         cmd->cmd.tx.driver_txop = 0;
2245         cmd->cmd.tx.tx_flags = tx_flags;
2246         cmd->cmd.tx.next_frame_len = 0;
2247 }
2248 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2249 {
2250         /* 0 - mgmt, 1 - cnt, 2 - data */
2251         int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2252         priv->tx_stats[idx].cnt++;
2253         priv->tx_stats[idx].bytes += len;
2254 }
2255 /**
2256  * iwl4965_get_sta_id - Find station's index within station table
2257  *
2258  * If new IBSS station, create new entry in station table
2259  */
2260 static int iwl4965_get_sta_id(struct iwl_priv *priv,
2261                                 struct ieee80211_hdr *hdr)
2262 {
2263         int sta_id;
2264         u16 fc = le16_to_cpu(hdr->frame_control);
2265         DECLARE_MAC_BUF(mac);
2266
2267         /* If this frame is broadcast or management, use broadcast station id */
2268         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2269             is_multicast_ether_addr(hdr->addr1))
2270                 return priv->hw_setting.bcast_sta_id;
2271
2272         switch (priv->iw_mode) {
2273
2274         /* If we are a client station in a BSS network, use the special
2275          * AP station entry (that's the only station we communicate with) */
2276         case IEEE80211_IF_TYPE_STA:
2277                 return IWL_AP_ID;
2278
2279         /* If we are an AP, then find the station, or use BCAST */
2280         case IEEE80211_IF_TYPE_AP:
2281                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2282                 if (sta_id != IWL_INVALID_STATION)
2283                         return sta_id;
2284                 return priv->hw_setting.bcast_sta_id;
2285
2286         /* If this frame is going out to an IBSS network, find the station,
2287          * or create a new station table entry */
2288         case IEEE80211_IF_TYPE_IBSS:
2289                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2290                 if (sta_id != IWL_INVALID_STATION)
2291                         return sta_id;
2292
2293                 /* Create new station table entry */
2294                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2295                                                    0, CMD_ASYNC, NULL);
2296
2297                 if (sta_id != IWL_INVALID_STATION)
2298                         return sta_id;
2299
2300                 IWL_DEBUG_DROP("Station %s not in station map. "
2301                                "Defaulting to broadcast...\n",
2302                                print_mac(mac, hdr->addr1));
2303                 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2304                 return priv->hw_setting.bcast_sta_id;
2305
2306         default:
2307                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2308                 return priv->hw_setting.bcast_sta_id;
2309         }
2310 }
2311
2312 /*
2313  * start REPLY_TX command process
2314  */
2315 static int iwl4965_tx_skb(struct iwl_priv *priv,
2316                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2317 {
2318         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2319         struct iwl4965_tfd_frame *tfd;
2320         u32 *control_flags;
2321         int txq_id = ctl->queue;
2322         struct iwl4965_tx_queue *txq = NULL;
2323         struct iwl4965_queue *q = NULL;
2324         dma_addr_t phys_addr;
2325         dma_addr_t txcmd_phys;
2326         dma_addr_t scratch_phys;
2327         struct iwl_cmd *out_cmd = NULL;
2328         u16 len, idx, len_org;
2329         u8 id, hdr_len, unicast;
2330         u8 sta_id;
2331         u16 seq_number = 0;
2332         u16 fc;
2333         __le16 *qc;
2334         u8 wait_write_ptr = 0;
2335         unsigned long flags;
2336         int rc;
2337
2338         spin_lock_irqsave(&priv->lock, flags);
2339         if (iwl4965_is_rfkill(priv)) {
2340                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2341                 goto drop_unlock;
2342         }
2343
2344         if (!priv->vif) {
2345                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2346                 goto drop_unlock;
2347         }
2348
2349         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2350                 IWL_ERROR("ERROR: No TX rate available.\n");
2351                 goto drop_unlock;
2352         }
2353
2354         unicast = !is_multicast_ether_addr(hdr->addr1);
2355         id = 0;
2356
2357         fc = le16_to_cpu(hdr->frame_control);
2358
2359 #ifdef CONFIG_IWLWIFI_DEBUG
2360         if (ieee80211_is_auth(fc))
2361                 IWL_DEBUG_TX("Sending AUTH frame\n");
2362         else if (ieee80211_is_assoc_request(fc))
2363                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2364         else if (ieee80211_is_reassoc_request(fc))
2365                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2366 #endif
2367
2368         /* drop all data frame if we are not associated */
2369         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2370            (!iwl4965_is_associated(priv) ||
2371             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2372             !priv->assoc_station_added)) {
2373                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2374                 goto drop_unlock;
2375         }
2376
2377         spin_unlock_irqrestore(&priv->lock, flags);
2378
2379         hdr_len = ieee80211_get_hdrlen(fc);
2380
2381         /* Find (or create) index into station table for destination station */
2382         sta_id = iwl4965_get_sta_id(priv, hdr);
2383         if (sta_id == IWL_INVALID_STATION) {
2384                 DECLARE_MAC_BUF(mac);
2385
2386                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2387                                print_mac(mac, hdr->addr1));
2388                 goto drop;
2389         }
2390
2391         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2392
2393         qc = ieee80211_get_qos_ctrl(hdr);
2394         if (qc) {
2395                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2396                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2397                                 IEEE80211_SCTL_SEQ;
2398                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2399                         (hdr->seq_ctrl &
2400                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2401                 seq_number += 0x10;
2402 #ifdef CONFIG_IWL4965_HT
2403                 /* aggregation is on for this <sta,tid> */
2404                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2405                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2406                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2407 #endif /* CONFIG_IWL4965_HT */
2408         }
2409
2410         /* Descriptor for chosen Tx queue */
2411         txq = &priv->txq[txq_id];
2412         q = &txq->q;
2413
2414         spin_lock_irqsave(&priv->lock, flags);
2415
2416         /* Set up first empty TFD within this queue's circular TFD buffer */
2417         tfd = &txq->bd[q->write_ptr];
2418         memset(tfd, 0, sizeof(*tfd));
2419         control_flags = (u32 *) tfd;
2420         idx = get_cmd_index(q, q->write_ptr, 0);
2421
2422         /* Set up driver data for this TFD */
2423         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2424         txq->txb[q->write_ptr].skb[0] = skb;
2425         memcpy(&(txq->txb[q->write_ptr].status.control),
2426                ctl, sizeof(struct ieee80211_tx_control));
2427
2428         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2429         out_cmd = &txq->cmd[idx];
2430         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2431         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2432
2433         /*
2434          * Set up the Tx-command (not MAC!) header.
2435          * Store the chosen Tx queue and TFD index within the sequence field;
2436          * after Tx, uCode's Tx response will return this value so driver can
2437          * locate the frame within the tx queue and do post-tx processing.
2438          */
2439         out_cmd->hdr.cmd = REPLY_TX;
2440         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2441                                 INDEX_TO_SEQ(q->write_ptr)));
2442
2443         /* Copy MAC header from skb into command buffer */
2444         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2445
2446         /*
2447          * Use the first empty entry in this queue's command buffer array
2448          * to contain the Tx command and MAC header concatenated together
2449          * (payload data will be in another buffer).
2450          * Size of this varies, due to varying MAC header length.
2451          * If end is not dword aligned, we'll have 2 extra bytes at the end
2452          * of the MAC header (device reads on dword boundaries).
2453          * We'll tell device about this padding later.
2454          */
2455         len = priv->hw_setting.tx_cmd_len +
2456                 sizeof(struct iwl_cmd_header) + hdr_len;
2457
2458         len_org = len;
2459         len = (len + 3) & ~3;
2460
2461         if (len_org != len)
2462                 len_org = 1;
2463         else
2464                 len_org = 0;
2465
2466         /* Physical address of this Tx command's header (not MAC header!),
2467          * within command buffer array. */
2468         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2469                      offsetof(struct iwl_cmd, hdr);
2470
2471         /* Add buffer containing Tx command and MAC(!) header to TFD's
2472          * first entry */
2473         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2474
2475         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2476                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
2477
2478         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2479          * if any (802.11 null frames have no payload). */
2480         len = skb->len - hdr_len;
2481         if (len) {
2482                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2483                                            len, PCI_DMA_TODEVICE);
2484                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2485         }
2486
2487         /* Tell 4965 about any 2-byte padding after MAC header */
2488         if (len_org)
2489                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2490
2491         /* Total # bytes to be transmitted */
2492         len = (u16)skb->len;
2493         out_cmd->cmd.tx.len = cpu_to_le16(len);
2494
2495         /* TODO need this for burst mode later on */
2496         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2497
2498         /* set is_hcca to 0; it probably will never be implemented */
2499         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2500
2501         iwl_update_tx_stats(priv, fc, len);
2502
2503         scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
2504                 offsetof(struct iwl4965_tx_cmd, scratch);
2505         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2506         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2507
2508         if (!ieee80211_get_morefrag(hdr)) {
2509                 txq->need_update = 1;
2510                 if (qc) {
2511                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2512                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2513                 }
2514         } else {
2515                 wait_write_ptr = 1;
2516                 txq->need_update = 0;
2517         }
2518
2519         iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2520                            sizeof(out_cmd->cmd.tx));
2521
2522         iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2523                            ieee80211_get_hdrlen(fc));
2524
2525         /* Set up entry for this TFD in Tx byte-count array */
2526         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2527
2528         /* Tell device the write index *just past* this latest filled TFD */
2529         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2530         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2531         spin_unlock_irqrestore(&priv->lock, flags);
2532
2533         if (rc)
2534                 return rc;
2535
2536         if ((iwl4965_queue_space(q) < q->high_mark)
2537             && priv->mac80211_registered) {
2538                 if (wait_write_ptr) {
2539                         spin_lock_irqsave(&priv->lock, flags);
2540                         txq->need_update = 1;
2541                         iwl4965_tx_queue_update_write_ptr(priv, txq);
2542                         spin_unlock_irqrestore(&priv->lock, flags);
2543                 }
2544
2545                 ieee80211_stop_queue(priv->hw, ctl->queue);
2546         }
2547
2548         return 0;
2549
2550 drop_unlock:
2551         spin_unlock_irqrestore(&priv->lock, flags);
2552 drop:
2553         return -1;
2554 }
2555
2556 static void iwl4965_set_rate(struct iwl_priv *priv)
2557 {
2558         const struct ieee80211_supported_band *hw = NULL;
2559         struct ieee80211_rate *rate;
2560         int i;
2561
2562         hw = iwl4965_get_hw_mode(priv, priv->band);
2563         if (!hw) {
2564                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2565                 return;
2566         }
2567
2568         priv->active_rate = 0;
2569         priv->active_rate_basic = 0;
2570
2571         for (i = 0; i < hw->n_bitrates; i++) {
2572                 rate = &(hw->bitrates[i]);
2573                 if (rate->hw_value < IWL_RATE_COUNT)
2574                         priv->active_rate |= (1 << rate->hw_value);
2575         }
2576
2577         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2578                        priv->active_rate, priv->active_rate_basic);
2579
2580         /*
2581          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2582          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2583          * OFDM
2584          */
2585         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2586                 priv->staging_rxon.cck_basic_rates =
2587                     ((priv->active_rate_basic &
2588                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2589         else
2590                 priv->staging_rxon.cck_basic_rates =
2591                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2592
2593         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2594                 priv->staging_rxon.ofdm_basic_rates =
2595                     ((priv->active_rate_basic &
2596                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2597                       IWL_FIRST_OFDM_RATE) & 0xFF;
2598         else
2599                 priv->staging_rxon.ofdm_basic_rates =
2600                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2601 }
2602
2603 static void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2604 {
2605         unsigned long flags;
2606
2607         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2608                 return;
2609
2610         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2611                           disable_radio ? "OFF" : "ON");
2612
2613         if (disable_radio) {
2614                 iwl4965_scan_cancel(priv);
2615                 /* FIXME: This is a workaround for AP */
2616                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2617                         spin_lock_irqsave(&priv->lock, flags);
2618                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
2619                                     CSR_UCODE_SW_BIT_RFKILL);
2620                         spin_unlock_irqrestore(&priv->lock, flags);
2621                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2622                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2623                 }
2624                 return;
2625         }
2626
2627         spin_lock_irqsave(&priv->lock, flags);
2628         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2629
2630         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2631         spin_unlock_irqrestore(&priv->lock, flags);
2632
2633         /* wake up ucode */
2634         msleep(10);
2635
2636         spin_lock_irqsave(&priv->lock, flags);
2637         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
2638         if (!iwl4965_grab_nic_access(priv))
2639                 iwl4965_release_nic_access(priv);
2640         spin_unlock_irqrestore(&priv->lock, flags);
2641
2642         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2643                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2644                                   "disabled by HW switch\n");
2645                 return;
2646         }
2647
2648         queue_work(priv->workqueue, &priv->restart);
2649         return;
2650 }
2651
2652 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2653                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2654 {
2655         u16 fc =
2656             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2657
2658         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2659                 return;
2660
2661         if (!(fc & IEEE80211_FCTL_PROTECTED))
2662                 return;
2663
2664         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2665         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2666         case RX_RES_STATUS_SEC_TYPE_TKIP:
2667                 /* The uCode has got a bad phase 1 Key, pushes the packet.
2668                  * Decryption will be done in SW. */
2669                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2670                     RX_RES_STATUS_BAD_KEY_TTAK)
2671                         break;
2672
2673                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2674                     RX_RES_STATUS_BAD_ICV_MIC)
2675                         stats->flag |= RX_FLAG_MMIC_ERROR;
2676         case RX_RES_STATUS_SEC_TYPE_WEP:
2677         case RX_RES_STATUS_SEC_TYPE_CCMP:
2678                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2679                     RX_RES_STATUS_DECRYPT_OK) {
2680                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2681                         stats->flag |= RX_FLAG_DECRYPTED;
2682                 }
2683                 break;
2684
2685         default:
2686                 break;
2687         }
2688 }
2689
2690
2691 #define IWL_PACKET_RETRY_TIME HZ
2692
2693 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2694 {
2695         u16 sc = le16_to_cpu(header->seq_ctrl);
2696         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2697         u16 frag = sc & IEEE80211_SCTL_FRAG;
2698         u16 *last_seq, *last_frag;
2699         unsigned long *last_time;
2700
2701         switch (priv->iw_mode) {
2702         case IEEE80211_IF_TYPE_IBSS:{
2703                 struct list_head *p;
2704                 struct iwl4965_ibss_seq *entry = NULL;
2705                 u8 *mac = header->addr2;
2706                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2707
2708                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2709                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
2710                         if (!compare_ether_addr(entry->mac, mac))
2711                                 break;
2712                 }
2713                 if (p == &priv->ibss_mac_hash[index]) {
2714                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2715                         if (!entry) {
2716                                 IWL_ERROR("Cannot malloc new mac entry\n");
2717                                 return 0;
2718                         }
2719                         memcpy(entry->mac, mac, ETH_ALEN);
2720                         entry->seq_num = seq;
2721                         entry->frag_num = frag;
2722                         entry->packet_time = jiffies;
2723                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2724                         return 0;
2725                 }
2726                 last_seq = &entry->seq_num;
2727                 last_frag = &entry->frag_num;
2728                 last_time = &entry->packet_time;
2729                 break;
2730         }
2731         case IEEE80211_IF_TYPE_STA:
2732                 last_seq = &priv->last_seq_num;
2733                 last_frag = &priv->last_frag_num;
2734                 last_time = &priv->last_packet_time;
2735                 break;
2736         default:
2737                 return 0;
2738         }
2739         if ((*last_seq == seq) &&
2740             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2741                 if (*last_frag == frag)
2742                         goto drop;
2743                 if (*last_frag + 1 != frag)
2744                         /* out-of-order fragment */
2745                         goto drop;
2746         } else
2747                 *last_seq = seq;
2748
2749         *last_frag = frag;
2750         *last_time = jiffies;
2751         return 0;
2752
2753  drop:
2754         return 1;
2755 }
2756
2757 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2758
2759 #include "iwl-spectrum.h"
2760
2761 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2762 #define BEACON_TIME_MASK_HIGH   0xFF000000
2763 #define TIME_UNIT               1024
2764
2765 /*
2766  * extended beacon time format
2767  * time in usec will be changed into a 32-bit value in 8:24 format
2768  * the high 1 byte is the beacon counts
2769  * the lower 3 bytes is the time in usec within one beacon interval
2770  */
2771
2772 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2773 {
2774         u32 quot;
2775         u32 rem;
2776         u32 interval = beacon_interval * 1024;
2777
2778         if (!interval || !usec)
2779                 return 0;
2780
2781         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2782         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2783
2784         return (quot << 24) + rem;
2785 }
2786
2787 /* base is usually what we get from ucode with each received frame,
2788  * the same as HW timer counter counting down
2789  */
2790
2791 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2792 {
2793         u32 base_low = base & BEACON_TIME_MASK_LOW;
2794         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2795         u32 interval = beacon_interval * TIME_UNIT;
2796         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2797             (addon & BEACON_TIME_MASK_HIGH);
2798
2799         if (base_low > addon_low)
2800                 res += base_low - addon_low;
2801         else if (base_low < addon_low) {
2802                 res += interval + base_low - addon_low;
2803                 res += (1 << 24);
2804         } else
2805                 res += (1 << 24);
2806
2807         return cpu_to_le32(res);
2808 }
2809
2810 static int iwl4965_get_measurement(struct iwl_priv *priv,
2811                                struct ieee80211_measurement_params *params,
2812                                u8 type)
2813 {
2814         struct iwl4965_spectrum_cmd spectrum;
2815         struct iwl4965_rx_packet *res;
2816         struct iwl_host_cmd cmd = {
2817                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2818                 .data = (void *)&spectrum,
2819                 .meta.flags = CMD_WANT_SKB,
2820         };
2821         u32 add_time = le64_to_cpu(params->start_time);
2822         int rc;
2823         int spectrum_resp_status;
2824         int duration = le16_to_cpu(params->duration);
2825
2826         if (iwl4965_is_associated(priv))
2827                 add_time =
2828                     iwl4965_usecs_to_beacons(
2829                         le64_to_cpu(params->start_time) - priv->last_tsf,
2830                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2831
2832         memset(&spectrum, 0, sizeof(spectrum));
2833
2834         spectrum.channel_count = cpu_to_le16(1);
2835         spectrum.flags =
2836             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2837         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2838         cmd.len = sizeof(spectrum);
2839         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2840
2841         if (iwl4965_is_associated(priv))
2842                 spectrum.start_time =
2843                     iwl4965_add_beacon_time(priv->last_beacon_time,
2844                                 add_time,
2845                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2846         else
2847                 spectrum.start_time = 0;
2848
2849         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2850         spectrum.channels[0].channel = params->channel;
2851         spectrum.channels[0].type = type;
2852         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2853                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2854                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2855
2856         rc = iwl_send_cmd_sync(priv, &cmd);
2857         if (rc)
2858                 return rc;
2859
2860         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2861         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2862                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2863                 rc = -EIO;
2864         }
2865
2866         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2867         switch (spectrum_resp_status) {
2868         case 0:         /* Command will be handled */
2869                 if (res->u.spectrum.id != 0xff) {
2870                         IWL_DEBUG_INFO
2871                             ("Replaced existing measurement: %d\n",
2872                              res->u.spectrum.id);
2873                         priv->measurement_status &= ~MEASUREMENT_READY;
2874                 }
2875                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2876                 rc = 0;
2877                 break;
2878
2879         case 1:         /* Command will not be handled */
2880                 rc = -EAGAIN;
2881                 break;
2882         }
2883
2884         dev_kfree_skb_any(cmd.meta.u.skb);
2885
2886         return rc;
2887 }
2888 #endif
2889
2890 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2891                                  struct iwl4965_tx_info *tx_sta)
2892 {
2893
2894         tx_sta->status.ack_signal = 0;
2895         tx_sta->status.excessive_retries = 0;
2896         tx_sta->status.queue_length = 0;
2897         tx_sta->status.queue_number = 0;
2898
2899         if (in_interrupt())
2900                 ieee80211_tx_status_irqsafe(priv->hw,
2901                                             tx_sta->skb[0], &(tx_sta->status));
2902         else
2903                 ieee80211_tx_status(priv->hw,
2904                                     tx_sta->skb[0], &(tx_sta->status));
2905
2906         tx_sta->skb[0] = NULL;
2907 }
2908
2909 /**
2910  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2911  *
2912  * When FW advances 'R' index, all entries between old and new 'R' index
2913  * need to be reclaimed. As result, some free space forms.  If there is
2914  * enough free space (> low mark), wake the stack that feeds us.
2915  */
2916 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2917 {
2918         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2919         struct iwl4965_queue *q = &txq->q;
2920         int nfreed = 0;
2921
2922         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2923                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2924                           "is out of range [0-%d] %d %d.\n", txq_id,
2925                           index, q->n_bd, q->write_ptr, q->read_ptr);
2926                 return 0;
2927         }
2928
2929         for (index = iwl_queue_inc_wrap(index, q->n_bd);
2930                 q->read_ptr != index;
2931                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2932                 if (txq_id != IWL_CMD_QUEUE_NUM) {
2933                         iwl4965_txstatus_to_ieee(priv,
2934                                         &(txq->txb[txq->q.read_ptr]));
2935                         iwl4965_hw_txq_free_tfd(priv, txq);
2936                 } else if (nfreed > 1) {
2937                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2938                                         q->write_ptr, q->read_ptr);
2939                         queue_work(priv->workqueue, &priv->restart);
2940                 }
2941                 nfreed++;
2942         }
2943
2944 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2945                         (txq_id != IWL_CMD_QUEUE_NUM) &&
2946                         priv->mac80211_registered)
2947                 ieee80211_wake_queue(priv->hw, txq_id); */
2948
2949
2950         return nfreed;
2951 }
2952
2953 static int iwl4965_is_tx_success(u32 status)
2954 {
2955         status &= TX_STATUS_MSK;
2956         return (status == TX_STATUS_SUCCESS)
2957             || (status == TX_STATUS_DIRECT_DONE);
2958 }
2959
2960 /******************************************************************************
2961  *
2962  * Generic RX handler implementations
2963  *
2964  ******************************************************************************/
2965 #ifdef CONFIG_IWL4965_HT
2966
2967 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2968                                     struct ieee80211_hdr *hdr)
2969 {
2970         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2971                 return IWL_AP_ID;
2972         else {
2973                 u8 *da = ieee80211_get_DA(hdr);
2974                 return iwl4965_hw_find_station(priv, da);
2975         }
2976 }
2977
2978 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2979         struct iwl_priv *priv, int txq_id, int idx)
2980 {
2981         if (priv->txq[txq_id].txb[idx].skb[0])
2982                 return (struct ieee80211_hdr *)priv->txq[txq_id].
2983                                 txb[idx].skb[0]->data;
2984         return NULL;
2985 }
2986
2987 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2988 {
2989         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2990                                 tx_resp->frame_count);
2991         return le32_to_cpu(*scd_ssn) & MAX_SN;
2992
2993 }
2994
2995 /**
2996  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2997  */
2998 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2999                                       struct iwl4965_ht_agg *agg,
3000                                       struct iwl4965_tx_resp_agg *tx_resp,
3001                                       u16 start_idx)
3002 {
3003         u16 status;
3004         struct agg_tx_status *frame_status = &tx_resp->status;
3005         struct ieee80211_tx_status *tx_status = NULL;
3006         struct ieee80211_hdr *hdr = NULL;
3007         int i, sh;
3008         int txq_id, idx;
3009         u16 seq;
3010
3011         if (agg->wait_for_ba)
3012                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3013
3014         agg->frame_count = tx_resp->frame_count;
3015         agg->start_idx = start_idx;
3016         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3017         agg->bitmap = 0;
3018
3019         /* # frames attempted by Tx command */
3020         if (agg->frame_count == 1) {
3021                 /* Only one frame was attempted; no block-ack will arrive */
3022                 status = le16_to_cpu(frame_status[0].status);
3023                 seq  = le16_to_cpu(frame_status[0].sequence);
3024                 idx = SEQ_TO_INDEX(seq);
3025                 txq_id = SEQ_TO_QUEUE(seq);
3026
3027                 /* FIXME: code repetition */
3028                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3029                                    agg->frame_count, agg->start_idx, idx);
3030
3031                 tx_status = &(priv->txq[txq_id].txb[idx].status);
3032                 tx_status->retry_count = tx_resp->failure_frame;
3033                 tx_status->queue_number = status & 0xff;
3034                 tx_status->queue_length = tx_resp->failure_rts;
3035                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3036                 tx_status->flags = iwl4965_is_tx_success(status)?
3037                         IEEE80211_TX_STATUS_ACK : 0;
3038                 iwl4965_hwrate_to_tx_control(priv,
3039                                              le32_to_cpu(tx_resp->rate_n_flags),
3040                                              &tx_status->control);
3041                 /* FIXME: code repetition end */
3042
3043                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3044                                     status & 0xff, tx_resp->failure_frame);
3045                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3046                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3047
3048                 agg->wait_for_ba = 0;
3049         } else {
3050                 /* Two or more frames were attempted; expect block-ack */
3051                 u64 bitmap = 0;
3052                 int start = agg->start_idx;
3053
3054                 /* Construct bit-map of pending frames within Tx window */
3055                 for (i = 0; i < agg->frame_count; i++) {
3056                         u16 sc;
3057                         status = le16_to_cpu(frame_status[i].status);
3058                         seq  = le16_to_cpu(frame_status[i].sequence);
3059                         idx = SEQ_TO_INDEX(seq);
3060                         txq_id = SEQ_TO_QUEUE(seq);
3061
3062                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3063                                       AGG_TX_STATE_ABORT_MSK))
3064                                 continue;
3065
3066                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3067                                            agg->frame_count, txq_id, idx);
3068
3069                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3070
3071                         sc = le16_to_cpu(hdr->seq_ctrl);
3072                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3073                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3074                                           " idx=%d, seq_idx=%d, seq=%d\n",
3075                                           idx, SEQ_TO_SN(sc),
3076                                           hdr->seq_ctrl);
3077                                 return -1;
3078                         }
3079
3080                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3081                                            i, idx, SEQ_TO_SN(sc));
3082
3083                         sh = idx - start;
3084                         if (sh > 64) {
3085                                 sh = (start - idx) + 0xff;
3086                                 bitmap = bitmap << sh;
3087                                 sh = 0;
3088                                 start = idx;
3089                         } else if (sh < -64)
3090                                 sh  = 0xff - (start - idx);
3091                         else if (sh < 0) {
3092                                 sh = start - idx;
3093                                 start = idx;
3094                                 bitmap = bitmap << sh;
3095                                 sh = 0;
3096                         }
3097                         bitmap |= (1 << sh);
3098                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3099                                            start, (u32)(bitmap & 0xFFFFFFFF));
3100                 }
3101
3102                 agg->bitmap = bitmap;
3103                 agg->start_idx = start;
3104                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3105                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3106                                    agg->frame_count, agg->start_idx,
3107                                    agg->bitmap);
3108
3109                 if (bitmap)
3110                         agg->wait_for_ba = 1;
3111         }
3112         return 0;
3113 }
3114 #endif
3115
3116 /**
3117  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3118  */
3119 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
3120                             struct iwl4965_rx_mem_buffer *rxb)
3121 {
3122         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3123         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3124         int txq_id = SEQ_TO_QUEUE(sequence);
3125         int index = SEQ_TO_INDEX(sequence);
3126         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3127         struct ieee80211_tx_status *tx_status;
3128         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3129         u32  status = le32_to_cpu(tx_resp->status);
3130 #ifdef CONFIG_IWL4965_HT
3131         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3132         struct ieee80211_hdr *hdr;
3133         __le16 *qc;
3134 #endif
3135
3136         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3137                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3138                           "is out of range [0-%d] %d %d\n", txq_id,
3139                           index, txq->q.n_bd, txq->q.write_ptr,
3140                           txq->q.read_ptr);
3141                 return;
3142         }
3143
3144 #ifdef CONFIG_IWL4965_HT
3145         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3146         qc = ieee80211_get_qos_ctrl(hdr);
3147
3148         if (qc)
3149                 tid = le16_to_cpu(*qc) & 0xf;
3150
3151         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3152         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3153                 IWL_ERROR("Station not known\n");
3154                 return;
3155         }
3156
3157         if (txq->sched_retry) {
3158                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3159                 struct iwl4965_ht_agg *agg = NULL;
3160
3161                 if (!qc)
3162                         return;
3163
3164                 agg = &priv->stations[sta_id].tid[tid].agg;
3165
3166                 iwl4965_tx_status_reply_tx(priv, agg,
3167                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3168
3169                 if ((tx_resp->frame_count == 1) &&
3170                     !iwl4965_is_tx_success(status)) {
3171                         /* TODO: send BAR */
3172                 }
3173
3174                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3175                         int freed;
3176                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3177                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3178                                            "%d index %d\n", scd_ssn , index);
3179                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3180                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3181
3182                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3183                             txq_id >= 0 && priv->mac80211_registered &&
3184                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3185                                 ieee80211_wake_queue(priv->hw, txq_id);
3186
3187                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3188                 }
3189         } else {
3190 #endif /* CONFIG_IWL4965_HT */
3191         tx_status = &(txq->txb[txq->q.read_ptr].status);
3192
3193         tx_status->retry_count = tx_resp->failure_frame;
3194         tx_status->queue_number = status;
3195         tx_status->queue_length = tx_resp->bt_kill_count;
3196         tx_status->queue_length |= tx_resp->failure_rts;
3197         tx_status->flags =
3198             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3199         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3200                                      &tx_status->control);
3201
3202         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3203                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3204                      status, le32_to_cpu(tx_resp->rate_n_flags),
3205                      tx_resp->failure_frame);
3206
3207         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3208         if (index != -1) {
3209                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3210 #ifdef CONFIG_IWL4965_HT
3211                 if (tid != MAX_TID_COUNT)
3212                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3213                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3214                         (txq_id >= 0) &&
3215                         priv->mac80211_registered)
3216                         ieee80211_wake_queue(priv->hw, txq_id);
3217                 if (tid != MAX_TID_COUNT)
3218                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3219 #endif
3220         }
3221 #ifdef CONFIG_IWL4965_HT
3222         }
3223 #endif /* CONFIG_IWL4965_HT */
3224
3225         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3226                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3227 }
3228
3229
3230 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3231                                struct iwl4965_rx_mem_buffer *rxb)
3232 {
3233         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3234         struct iwl4965_alive_resp *palive;
3235         struct delayed_work *pwork;
3236
3237         palive = &pkt->u.alive_frame;
3238
3239         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3240                        "0x%01X 0x%01X\n",
3241                        palive->is_valid, palive->ver_type,
3242                        palive->ver_subtype);
3243
3244         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3245                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3246                 memcpy(&priv->card_alive_init,
3247                        &pkt->u.alive_frame,
3248                        sizeof(struct iwl4965_init_alive_resp));
3249                 pwork = &priv->init_alive_start;
3250         } else {
3251                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3252                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3253                        sizeof(struct iwl4965_alive_resp));
3254                 pwork = &priv->alive_start;
3255         }
3256
3257         /* We delay the ALIVE response by 5ms to
3258          * give the HW RF Kill time to activate... */
3259         if (palive->is_valid == UCODE_VALID_OK)
3260                 queue_delayed_work(priv->workqueue, pwork,
3261                                    msecs_to_jiffies(5));
3262         else
3263                 IWL_WARNING("uCode did not respond OK.\n");
3264 }
3265
3266 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3267                                  struct iwl4965_rx_mem_buffer *rxb)
3268 {
3269         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3270
3271         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3272         return;
3273 }
3274
3275 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3276                                struct iwl4965_rx_mem_buffer *rxb)
3277 {
3278         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3279
3280         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3281                 "seq 0x%04X ser 0x%08X\n",
3282                 le32_to_cpu(pkt->u.err_resp.error_type),
3283                 get_cmd_string(pkt->u.err_resp.cmd_id),
3284                 pkt->u.err_resp.cmd_id,
3285                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3286                 le32_to_cpu(pkt->u.err_resp.error_info));
3287 }
3288
3289 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3290
3291 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3292 {
3293         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3294         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3295         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3296         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3297                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3298         rxon->channel = csa->channel;
3299         priv->staging_rxon.channel = csa->channel;
3300 }
3301
3302 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3303                                           struct iwl4965_rx_mem_buffer *rxb)
3304 {
3305 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3306         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3307         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3308
3309         if (!report->state) {
3310                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3311                           "Spectrum Measure Notification: Start\n");
3312                 return;
3313         }
3314
3315         memcpy(&priv->measure_report, report, sizeof(*report));
3316         priv->measurement_status |= MEASUREMENT_READY;
3317 #endif
3318 }
3319
3320 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3321                                   struct iwl4965_rx_mem_buffer *rxb)
3322 {
3323 #ifdef CONFIG_IWLWIFI_DEBUG
3324         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3325         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3326         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3327                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3328 #endif
3329 }
3330
3331 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3332                                              struct iwl4965_rx_mem_buffer *rxb)
3333 {
3334         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3335         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3336                         "notification for %s:\n",
3337                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3338         iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3339 }
3340
3341 static void iwl4965_bg_beacon_update(struct work_struct *work)
3342 {
3343         struct iwl_priv *priv =
3344                 container_of(work, struct iwl_priv, beacon_update);
3345         struct sk_buff *beacon;
3346
3347         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3348         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3349
3350         if (!beacon) {
3351                 IWL_ERROR("update beacon failed\n");
3352                 return;
3353         }
3354
3355         mutex_lock(&priv->mutex);
3356         /* new beacon skb is allocated every time; dispose previous.*/
3357         if (priv->ibss_beacon)
3358                 dev_kfree_skb(priv->ibss_beacon);
3359
3360         priv->ibss_beacon = beacon;
3361         mutex_unlock(&priv->mutex);
3362
3363         iwl4965_send_beacon_cmd(priv);
3364 }
3365
3366 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3367                                 struct iwl4965_rx_mem_buffer *rxb)
3368 {
3369 #ifdef CONFIG_IWLWIFI_DEBUG
3370         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3371         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3372         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3373
3374         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3375                 "tsf %d %d rate %d\n",
3376                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3377                 beacon->beacon_notify_hdr.failure_frame,
3378                 le32_to_cpu(beacon->ibss_mgr_status),
3379                 le32_to_cpu(beacon->high_tsf),
3380                 le32_to_cpu(beacon->low_tsf), rate);
3381 #endif
3382
3383         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3384             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3385                 queue_work(priv->workqueue, &priv->beacon_update);
3386 }
3387
3388 /* Service response to REPLY_SCAN_CMD (0x80) */
3389 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3390                               struct iwl4965_rx_mem_buffer *rxb)
3391 {
3392 #ifdef CONFIG_IWLWIFI_DEBUG
3393         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3394         struct iwl4965_scanreq_notification *notif =
3395             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3396
3397         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3398 #endif
3399 }
3400
3401 /* Service SCAN_START_NOTIFICATION (0x82) */
3402 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3403                                     struct iwl4965_rx_mem_buffer *rxb)
3404 {
3405         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3406         struct iwl4965_scanstart_notification *notif =
3407             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3408         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3409         IWL_DEBUG_SCAN("Scan start: "
3410                        "%d [802.11%s] "
3411                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3412                        notif->channel,
3413                        notif->band ? "bg" : "a",
3414                        notif->tsf_high,
3415                        notif->tsf_low, notif->status, notif->beacon_timer);
3416 }
3417
3418 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3419 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3420                                       struct iwl4965_rx_mem_buffer *rxb)
3421 {
3422         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3423         struct iwl4965_scanresults_notification *notif =
3424             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3425
3426         IWL_DEBUG_SCAN("Scan ch.res: "
3427                        "%d [802.11%s] "
3428                        "(TSF: 0x%08X:%08X) - %d "
3429                        "elapsed=%lu usec (%dms since last)\n",
3430                        notif->channel,
3431                        notif->band ? "bg" : "a",
3432                        le32_to_cpu(notif->tsf_high),
3433                        le32_to_cpu(notif->tsf_low),
3434                        le32_to_cpu(notif->statistics[0]),
3435                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3436                        jiffies_to_msecs(elapsed_jiffies
3437                                         (priv->last_scan_jiffies, jiffies)));
3438
3439         priv->last_scan_jiffies = jiffies;
3440         priv->next_scan_jiffies = 0;
3441 }
3442
3443 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3444 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3445                                        struct iwl4965_rx_mem_buffer *rxb)
3446 {
3447         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3448         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3449
3450         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3451                        scan_notif->scanned_channels,
3452                        scan_notif->tsf_low,
3453                        scan_notif->tsf_high, scan_notif->status);
3454
3455         /* The HW is no longer scanning */
3456         clear_bit(STATUS_SCAN_HW, &priv->status);
3457
3458         /* The scan completion notification came in, so kill that timer... */
3459         cancel_delayed_work(&priv->scan_check);
3460
3461         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3462                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3463                        jiffies_to_msecs(elapsed_jiffies
3464                                         (priv->scan_pass_start, jiffies)));
3465
3466         /* Remove this scanned band from the list
3467          * of pending bands to scan */
3468         priv->scan_bands--;
3469
3470         /* If a request to abort was given, or the scan did not succeed
3471          * then we reset the scan state machine and terminate,
3472          * re-queuing another scan if one has been requested */
3473         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3474                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3475                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3476         } else {
3477                 /* If there are more bands on this scan pass reschedule */
3478                 if (priv->scan_bands > 0)
3479                         goto reschedule;
3480         }
3481
3482         priv->last_scan_jiffies = jiffies;
3483         priv->next_scan_jiffies = 0;
3484         IWL_DEBUG_INFO("Setting scan to off\n");
3485
3486         clear_bit(STATUS_SCANNING, &priv->status);
3487
3488         IWL_DEBUG_INFO("Scan took %dms\n",
3489                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3490
3491         queue_work(priv->workqueue, &priv->scan_completed);
3492
3493         return;
3494
3495 reschedule:
3496         priv->scan_pass_start = jiffies;
3497         queue_work(priv->workqueue, &priv->request_scan);
3498 }
3499
3500 /* Handle notification from uCode that card's power state is changing
3501  * due to software, hardware, or critical temperature RFKILL */
3502 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3503                                     struct iwl4965_rx_mem_buffer *rxb)
3504 {
3505         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3506         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3507         unsigned long status = priv->status;
3508
3509         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3510                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3511                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3512
3513         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3514                      RF_CARD_DISABLED)) {
3515
3516                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3517                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3518
3519                 if (!iwl4965_grab_nic_access(priv)) {
3520                         iwl4965_write_direct32(
3521                                 priv, HBUS_TARG_MBX_C,
3522                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3523
3524                         iwl4965_release_nic_access(priv);
3525                 }
3526
3527                 if (!(flags & RXON_CARD_DISABLED)) {
3528                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3529                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3530                         if (!iwl4965_grab_nic_access(priv)) {
3531                                 iwl4965_write_direct32(
3532                                         priv, HBUS_TARG_MBX_C,
3533                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3534
3535                                 iwl4965_release_nic_access(priv);
3536                         }
3537                 }
3538
3539                 if (flags & RF_CARD_DISABLED) {
3540                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3541                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3542                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3543                         if (!iwl4965_grab_nic_access(priv))
3544                                 iwl4965_release_nic_access(priv);
3545                 }
3546         }
3547
3548         if (flags & HW_CARD_DISABLED)
3549                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3550         else
3551                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3552
3553
3554         if (flags & SW_CARD_DISABLED)
3555                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3556         else
3557                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3558
3559         if (!(flags & RXON_CARD_DISABLED))
3560                 iwl4965_scan_cancel(priv);
3561
3562         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3563              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3564             (test_bit(STATUS_RF_KILL_SW, &status) !=
3565              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3566                 queue_work(priv->workqueue, &priv->rf_kill);
3567         else
3568                 wake_up_interruptible(&priv->wait_command_queue);
3569 }
3570
3571 /**
3572  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3573  *
3574  * Setup the RX handlers for each of the reply types sent from the uCode
3575  * to the host.
3576  *
3577  * This function chains into the hardware specific files for them to setup
3578  * any hardware specific handlers as well.
3579  */
3580 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3581 {
3582         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3583         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3584         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3585         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3586         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3587             iwl4965_rx_spectrum_measure_notif;
3588         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3589         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3590             iwl4965_rx_pm_debug_statistics_notif;
3591         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3592
3593         /*
3594          * The same handler is used for both the REPLY to a discrete
3595          * statistics request from the host as well as for the periodic
3596          * statistics notifications (after received beacons) from the uCode.
3597          */
3598         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3599         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3600
3601         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3602         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3603         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3604             iwl4965_rx_scan_results_notif;
3605         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3606             iwl4965_rx_scan_complete_notif;
3607         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3608         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3609
3610         /* Set up hardware specific Rx handlers */
3611         iwl4965_hw_rx_handler_setup(priv);
3612 }
3613
3614 /**
3615  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3616  * @rxb: Rx buffer to reclaim
3617  *
3618  * If an Rx buffer has an async callback associated with it the callback
3619  * will be executed.  The attached skb (if present) will only be freed
3620  * if the callback returns 1
3621  */
3622 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3623                                 struct iwl4965_rx_mem_buffer *rxb)
3624 {
3625         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3626         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3627         int txq_id = SEQ_TO_QUEUE(sequence);
3628         int index = SEQ_TO_INDEX(sequence);
3629         int huge = sequence & SEQ_HUGE_FRAME;
3630         int cmd_index;
3631         struct iwl_cmd *cmd;
3632
3633         /* If a Tx command is being handled and it isn't in the actual
3634          * command queue then there a command routing bug has been introduced
3635          * in the queue management code. */
3636         if (txq_id != IWL_CMD_QUEUE_NUM)
3637                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3638                           txq_id, pkt->hdr.cmd);
3639         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3640
3641         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3642         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3643
3644         /* Input error checking is done when commands are added to queue. */
3645         if (cmd->meta.flags & CMD_WANT_SKB) {
3646                 cmd->meta.source->u.skb = rxb->skb;
3647                 rxb->skb = NULL;
3648         } else if (cmd->meta.u.callback &&
3649                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3650                 rxb->skb = NULL;
3651
3652         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3653
3654         if (!(cmd->meta.flags & CMD_ASYNC)) {
3655                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3656                 wake_up_interruptible(&priv->wait_command_queue);
3657         }
3658 }
3659
3660 /************************** RX-FUNCTIONS ****************************/
3661 /*
3662  * Rx theory of operation
3663  *
3664  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3665  * each of which point to Receive Buffers to be filled by 4965.  These get
3666  * used not only for Rx frames, but for any command response or notification
3667  * from the 4965.  The driver and 4965 manage the Rx buffers by means
3668  * of indexes into the circular buffer.
3669  *
3670  * Rx Queue Indexes
3671  * The host/firmware share two index registers for managing the Rx buffers.
3672  *
3673  * The READ index maps to the first position that the firmware may be writing
3674  * to -- the driver can read up to (but not including) this position and get
3675  * good data.
3676  * The READ index is managed by the firmware once the card is enabled.
3677  *
3678  * The WRITE index maps to the last position the driver has read from -- the
3679  * position preceding WRITE is the last slot the firmware can place a packet.
3680  *
3681  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3682  * WRITE = READ.
3683  *
3684  * During initialization, the host sets up the READ queue position to the first
3685  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3686  *
3687  * When the firmware places a packet in a buffer, it will advance the READ index
3688  * and fire the RX interrupt.  The driver can then query the READ index and
3689  * process as many packets as possible, moving the WRITE index forward as it
3690  * resets the Rx queue buffers with new memory.
3691  *
3692  * The management in the driver is as follows:
3693  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3694  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3695  *   to replenish the iwl->rxq->rx_free.
3696  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3697  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3698  *   'processed' and 'read' driver indexes as well)
3699  * + A received packet is processed and handed to the kernel network stack,
3700  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3701  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3702  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3703  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3704  *   were enough free buffers and RX_STALLED is set it is cleared.
3705  *
3706  *
3707  * Driver sequence:
3708  *
3709  * iwl4965_rx_queue_alloc()   Allocates rx_free
3710  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3711  *                            iwl4965_rx_queue_restock
3712  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3713  *                            queue, updates firmware pointers, and updates
3714  *                            the WRITE index.  If insufficient rx_free buffers
3715  *                            are available, schedules iwl4965_rx_replenish
3716  *
3717  * -- enable interrupts --
3718  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
3719  *                            READ INDEX, detaching the SKB from the pool.
3720  *                            Moves the packet buffer from queue to rx_used.
3721  *                            Calls iwl4965_rx_queue_restock to refill any empty
3722  *                            slots.
3723  * ...
3724  *
3725  */
3726
3727 /**
3728  * iwl4965_rx_queue_space - Return number of free slots available in queue.
3729  */
3730 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3731 {
3732         int s = q->read - q->write;
3733         if (s <= 0)
3734                 s += RX_QUEUE_SIZE;
3735         /* keep some buffer to not confuse full and empty queue */
3736         s -= 2;
3737         if (s < 0)
3738                 s = 0;
3739         return s;
3740 }
3741
3742 /**
3743  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3744  */
3745 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3746 {
3747         u32 reg = 0;
3748         int rc = 0;
3749         unsigned long flags;
3750
3751         spin_lock_irqsave(&q->lock, flags);
3752
3753         if (q->need_update == 0)
3754                 goto exit_unlock;
3755
3756         /* If power-saving is in use, make sure device is awake */
3757         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3758                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3759
3760                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3761                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
3762                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3763                         goto exit_unlock;
3764                 }
3765
3766                 rc = iwl4965_grab_nic_access(priv);
3767                 if (rc)
3768                         goto exit_unlock;
3769
3770                 /* Device expects a multiple of 8 */
3771                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3772                                      q->write & ~0x7);
3773                 iwl4965_release_nic_access(priv);
3774
3775         /* Else device is assumed to be awake */
3776         } else
3777                 /* Device expects a multiple of 8 */
3778                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3779
3780
3781         q->need_update = 0;
3782
3783  exit_unlock:
3784         spin_unlock_irqrestore(&q->lock, flags);
3785         return rc;
3786 }
3787
3788 /**
3789  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3790  */
3791 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3792                                           dma_addr_t dma_addr)
3793 {
3794         return cpu_to_le32((u32)(dma_addr >> 8));
3795 }
3796
3797
3798 /**
3799  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3800  *
3801  * If there are slots in the RX queue that need to be restocked,
3802  * and we have free pre-allocated buffers, fill the ranks as much
3803  * as we can, pulling from rx_free.
3804  *
3805  * This moves the 'write' index forward to catch up with 'processed', and
3806  * also updates the memory address in the firmware to reference the new
3807  * target buffer.
3808  */
3809 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3810 {
3811         struct iwl4965_rx_queue *rxq = &priv->rxq;
3812         struct list_head *element;
3813         struct iwl4965_rx_mem_buffer *rxb;
3814         unsigned long flags;
3815         int write, rc;
3816
3817         spin_lock_irqsave(&rxq->lock, flags);
3818         write = rxq->write & ~0x7;
3819         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3820                 /* Get next free Rx buffer, remove from free list */
3821                 element = rxq->rx_free.next;
3822                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3823                 list_del(element);
3824
3825                 /* Point to Rx buffer via next RBD in circular buffer */
3826                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3827                 rxq->queue[rxq->write] = rxb;
3828                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3829                 rxq->free_count--;
3830         }
3831         spin_unlock_irqrestore(&rxq->lock, flags);
3832         /* If the pre-allocated buffer pool is dropping low, schedule to
3833          * refill it */
3834         if (rxq->free_count <= RX_LOW_WATERMARK)
3835                 queue_work(priv->workqueue, &priv->rx_replenish);
3836
3837
3838         /* If we've added more space for the firmware to place data, tell it.
3839          * Increment device's write pointer in multiples of 8. */
3840         if ((write != (rxq->write & ~0x7))
3841             || (abs(rxq->write - rxq->read) > 7)) {
3842                 spin_lock_irqsave(&rxq->lock, flags);
3843                 rxq->need_update = 1;
3844                 spin_unlock_irqrestore(&rxq->lock, flags);
3845                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3846                 if (rc)
3847                         return rc;
3848         }
3849
3850         return 0;
3851 }
3852
3853 /**
3854  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3855  *
3856  * When moving to rx_free an SKB is allocated for the slot.
3857  *
3858  * Also restock the Rx queue via iwl4965_rx_queue_restock.
3859  * This is called as a scheduled work item (except for during initialization)
3860  */
3861 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3862 {
3863         struct iwl4965_rx_queue *rxq = &priv->rxq;
3864         struct list_head *element;
3865         struct iwl4965_rx_mem_buffer *rxb;
3866         unsigned long flags;
3867         spin_lock_irqsave(&rxq->lock, flags);
3868         while (!list_empty(&rxq->rx_used)) {
3869                 element = rxq->rx_used.next;
3870                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3871
3872                 /* Alloc a new receive buffer */
3873                 rxb->skb =
3874                     alloc_skb(priv->hw_setting.rx_buf_size,
3875                                 __GFP_NOWARN | GFP_ATOMIC);
3876                 if (!rxb->skb) {
3877                         if (net_ratelimit())
3878                                 printk(KERN_CRIT DRV_NAME
3879                                        ": Can not allocate SKB buffers\n");
3880                         /* We don't reschedule replenish work here -- we will
3881                          * call the restock method and if it still needs
3882                          * more buffers it will schedule replenish */
3883                         break;
3884                 }
3885                 priv->alloc_rxb_skb++;
3886                 list_del(element);
3887
3888                 /* Get physical address of RB/SKB */
3889                 rxb->dma_addr =
3890                     pci_map_single(priv->pci_dev, rxb->skb->data,
3891                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
3892                 list_add_tail(&rxb->list, &rxq->rx_free);
3893                 rxq->free_count++;
3894         }
3895         spin_unlock_irqrestore(&rxq->lock, flags);
3896 }
3897
3898 /*
3899  * this should be called while priv->lock is locked
3900 */
3901 static void __iwl4965_rx_replenish(void *data)
3902 {
3903         struct iwl_priv *priv = data;
3904
3905         iwl4965_rx_allocate(priv);
3906         iwl4965_rx_queue_restock(priv);
3907 }
3908
3909
3910 void iwl4965_rx_replenish(void *data)
3911 {
3912         struct iwl_priv *priv = data;
3913         unsigned long flags;
3914
3915         iwl4965_rx_allocate(priv);
3916
3917         spin_lock_irqsave(&priv->lock, flags);
3918         iwl4965_rx_queue_restock(priv);
3919         spin_unlock_irqrestore(&priv->lock, flags);
3920 }
3921
3922 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3923  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3924  * This free routine walks the list of POOL entries and if SKB is set to
3925  * non NULL it is unmapped and freed
3926  */
3927 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3928 {
3929         int i;
3930         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3931                 if (rxq->pool[i].skb != NULL) {
3932                         pci_unmap_single(priv->pci_dev,
3933                                          rxq->pool[i].dma_addr,
3934                                          priv->hw_setting.rx_buf_size,
3935                                          PCI_DMA_FROMDEVICE);
3936                         dev_kfree_skb(rxq->pool[i].skb);
3937                 }
3938         }
3939
3940         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3941                             rxq->dma_addr);
3942         rxq->bd = NULL;
3943 }
3944
3945 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3946 {
3947         struct iwl4965_rx_queue *rxq = &priv->rxq;
3948         struct pci_dev *dev = priv->pci_dev;
3949         int i;
3950
3951         spin_lock_init(&rxq->lock);
3952         INIT_LIST_HEAD(&rxq->rx_free);
3953         INIT_LIST_HEAD(&rxq->rx_used);
3954
3955         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3956         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3957         if (!rxq->bd)
3958                 return -ENOMEM;
3959
3960         /* Fill the rx_used queue with _all_ of the Rx buffers */
3961         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3962                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3963
3964         /* Set us so that we have processed and used all buffers, but have
3965          * not restocked the Rx queue with fresh buffers */
3966         rxq->read = rxq->write = 0;
3967         rxq->free_count = 0;
3968         rxq->need_update = 0;
3969         return 0;
3970 }
3971
3972 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3973 {
3974         unsigned long flags;
3975         int i;
3976         spin_lock_irqsave(&rxq->lock, flags);
3977         INIT_LIST_HEAD(&rxq->rx_free);
3978         INIT_LIST_HEAD(&rxq->rx_used);
3979         /* Fill the rx_used queue with _all_ of the Rx buffers */
3980         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3981                 /* In the reset function, these buffers may have been allocated
3982                  * to an SKB, so we need to unmap and free potential storage */
3983                 if (rxq->pool[i].skb != NULL) {
3984                         pci_unmap_single(priv->pci_dev,
3985                                          rxq->pool[i].dma_addr,
3986                                          priv->hw_setting.rx_buf_size,
3987                                          PCI_DMA_FROMDEVICE);
3988                         priv->alloc_rxb_skb--;
3989                         dev_kfree_skb(rxq->pool[i].skb);
3990                         rxq->pool[i].skb = NULL;
3991                 }
3992                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3993         }
3994
3995         /* Set us so that we have processed and used all buffers, but have
3996          * not restocked the Rx queue with fresh buffers */
3997         rxq->read = rxq->write = 0;
3998         rxq->free_count = 0;
3999         spin_unlock_irqrestore(&rxq->lock, flags);
4000 }
4001
4002 /* Convert linear signal-to-noise ratio into dB */
4003 static u8 ratio2dB[100] = {
4004 /*       0   1   2   3   4   5   6   7   8   9 */
4005          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4006         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4007         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4008         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4009         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4010         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4011         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4012         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4013         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4014         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4015 };
4016
4017 /* Calculates a relative dB value from a ratio of linear
4018  *   (i.e. not dB) signal levels.
4019  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4020 int iwl4965_calc_db_from_ratio(int sig_ratio)
4021 {
4022         /* 1000:1 or higher just report as 60 dB */
4023         if (sig_ratio >= 1000)
4024                 return 60;
4025
4026         /* 100:1 or higher, divide by 10 and use table,
4027          *   add 20 dB to make up for divide by 10 */
4028         if (sig_ratio >= 100)
4029                 return (20 + (int)ratio2dB[sig_ratio/10]);
4030
4031         /* We shouldn't see this */
4032         if (sig_ratio < 1)
4033                 return 0;
4034
4035         /* Use table for ratios 1:1 - 99:1 */
4036         return (int)ratio2dB[sig_ratio];
4037 }
4038
4039 #define PERFECT_RSSI (-20) /* dBm */
4040 #define WORST_RSSI (-95)   /* dBm */
4041 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4042
4043 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4044  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4045  *   about formulas used below. */
4046 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4047 {
4048         int sig_qual;
4049         int degradation = PERFECT_RSSI - rssi_dbm;
4050
4051         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4052          * as indicator; formula is (signal dbm - noise dbm).
4053          * SNR at or above 40 is a great signal (100%).
4054          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4055          * Weakest usable signal is usually 10 - 15 dB SNR. */
4056         if (noise_dbm) {
4057                 if (rssi_dbm - noise_dbm >= 40)
4058                         return 100;
4059                 else if (rssi_dbm < noise_dbm)
4060                         return 0;
4061                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4062
4063         /* Else use just the signal level.
4064          * This formula is a least squares fit of data points collected and
4065          *   compared with a reference system that had a percentage (%) display
4066          *   for signal quality. */
4067         } else
4068                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4069                             (15 * RSSI_RANGE + 62 * degradation)) /
4070                            (RSSI_RANGE * RSSI_RANGE);
4071
4072         if (sig_qual > 100)
4073                 sig_qual = 100;
4074         else if (sig_qual < 1)
4075                 sig_qual = 0;
4076
4077         return sig_qual;
4078 }
4079
4080 /**
4081  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4082  *
4083  * Uses the priv->rx_handlers callback function array to invoke
4084  * the appropriate handlers, including command responses,
4085  * frame-received notifications, and other notifications.
4086  */
4087 static void iwl4965_rx_handle(struct iwl_priv *priv)
4088 {
4089         struct iwl4965_rx_mem_buffer *rxb;
4090         struct iwl4965_rx_packet *pkt;
4091         struct iwl4965_rx_queue *rxq = &priv->rxq;
4092         u32 r, i;
4093         int reclaim;
4094         unsigned long flags;
4095         u8 fill_rx = 0;
4096         u32 count = 8;
4097
4098         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4099          * buffer that the driver may process (last buffer filled by ucode). */
4100         r = iwl4965_hw_get_rx_read(priv);
4101         i = rxq->read;
4102
4103         /* Rx interrupt, but nothing sent from uCode */
4104         if (i == r)
4105                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4106
4107         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4108                 fill_rx = 1;
4109
4110         while (i != r) {
4111                 rxb = rxq->queue[i];
4112
4113                 /* If an RXB doesn't have a Rx queue slot associated with it,
4114                  * then a bug has been introduced in the queue refilling
4115                  * routines -- catch it here */
4116                 BUG_ON(rxb == NULL);
4117
4118                 rxq->queue[i] = NULL;
4119
4120                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4121                                             priv->hw_setting.rx_buf_size,
4122                                             PCI_DMA_FROMDEVICE);
4123                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4124
4125                 /* Reclaim a command buffer only if this packet is a response
4126                  *   to a (driver-originated) command.
4127                  * If the packet (e.g. Rx frame) originated from uCode,
4128                  *   there is no command buffer to reclaim.
4129                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4130                  *   but apparently a few don't get set; catch them here. */
4131                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4132                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4133                         (pkt->hdr.cmd != REPLY_RX) &&
4134                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4135                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4136                         (pkt->hdr.cmd != REPLY_TX);
4137
4138                 /* Based on type of command response or notification,
4139                  *   handle those that need handling via function in
4140                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4141                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4142                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4143                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4144                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4145                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4146                 } else {
4147                         /* No handling needed */
4148                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4149                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4150                                 r, i, get_cmd_string(pkt->hdr.cmd),
4151                                 pkt->hdr.cmd);
4152                 }
4153
4154                 if (reclaim) {
4155                         /* Invoke any callbacks, transfer the skb to caller, and
4156                          * fire off the (possibly) blocking iwl_send_cmd()
4157                          * as we reclaim the driver command queue */
4158                         if (rxb && rxb->skb)
4159                                 iwl4965_tx_cmd_complete(priv, rxb);
4160                         else
4161                                 IWL_WARNING("Claim null rxb?\n");
4162                 }
4163
4164                 /* For now we just don't re-use anything.  We can tweak this
4165                  * later to try and re-use notification packets and SKBs that
4166                  * fail to Rx correctly */
4167                 if (rxb->skb != NULL) {
4168                         priv->alloc_rxb_skb--;
4169                         dev_kfree_skb_any(rxb->skb);
4170                         rxb->skb = NULL;
4171                 }
4172
4173                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4174                                  priv->hw_setting.rx_buf_size,
4175                                  PCI_DMA_FROMDEVICE);
4176                 spin_lock_irqsave(&rxq->lock, flags);
4177                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4178                 spin_unlock_irqrestore(&rxq->lock, flags);
4179                 i = (i + 1) & RX_QUEUE_MASK;
4180                 /* If there are a lot of unused frames,
4181                  * restock the Rx queue so ucode wont assert. */
4182                 if (fill_rx) {
4183                         count++;
4184                         if (count >= 8) {
4185                                 priv->rxq.read = i;
4186                                 __iwl4965_rx_replenish(priv);
4187                                 count = 0;
4188                         }
4189                 }
4190         }
4191
4192         /* Backtrack one entry */
4193         priv->rxq.read = i;
4194         iwl4965_rx_queue_restock(priv);
4195 }
4196
4197 /**
4198  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4199  */
4200 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4201                                   struct iwl4965_tx_queue *txq)
4202 {
4203         u32 reg = 0;
4204         int rc = 0;
4205         int txq_id = txq->q.id;
4206
4207         if (txq->need_update == 0)
4208                 return rc;
4209
4210         /* if we're trying to save power */
4211         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4212                 /* wake up nic if it's powered down ...
4213                  * uCode will wake up, and interrupt us again, so next
4214                  * time we'll skip this part. */
4215                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4216
4217                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4218                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4219                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4220                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4221                         return rc;
4222                 }
4223
4224                 /* restore this queue's parameters in nic hardware. */
4225                 rc = iwl4965_grab_nic_access(priv);
4226                 if (rc)
4227                         return rc;
4228                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4229                                      txq->q.write_ptr | (txq_id << 8));
4230                 iwl4965_release_nic_access(priv);
4231
4232         /* else not in power-save mode, uCode will never sleep when we're
4233          * trying to tx (during RFKILL, we're not trying to tx). */
4234         } else
4235                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4236                             txq->q.write_ptr | (txq_id << 8));
4237
4238         txq->need_update = 0;
4239
4240         return rc;
4241 }
4242
4243 #ifdef CONFIG_IWLWIFI_DEBUG
4244 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4245 {
4246         DECLARE_MAC_BUF(mac);
4247
4248         IWL_DEBUG_RADIO("RX CONFIG:\n");
4249         iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4250         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4251         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4252         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4253                         le32_to_cpu(rxon->filter_flags));
4254         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4255         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4256                         rxon->ofdm_basic_rates);
4257         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4258         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4259                         print_mac(mac, rxon->node_addr));
4260         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4261                         print_mac(mac, rxon->bssid_addr));
4262         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4263 }
4264 #endif
4265
4266 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4267 {
4268         IWL_DEBUG_ISR("Enabling interrupts\n");
4269         set_bit(STATUS_INT_ENABLED, &priv->status);
4270         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4271 }
4272
4273 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4274 {
4275         clear_bit(STATUS_INT_ENABLED, &priv->status);
4276
4277         /* disable interrupts from uCode/NIC to host */
4278         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4279
4280         /* acknowledge/clear/reset any interrupts still pending
4281          * from uCode or flow handler (Rx/Tx DMA) */
4282         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4283         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4284         IWL_DEBUG_ISR("Disabled interrupts\n");
4285 }
4286
4287 static const char *desc_lookup(int i)
4288 {
4289         switch (i) {
4290         case 1:
4291                 return "FAIL";
4292         case 2:
4293                 return "BAD_PARAM";
4294         case 3:
4295                 return "BAD_CHECKSUM";
4296         case 4:
4297                 return "NMI_INTERRUPT";
4298         case 5:
4299                 return "SYSASSERT";
4300         case 6:
4301                 return "FATAL_ERROR";
4302         }
4303
4304         return "UNKNOWN";
4305 }
4306
4307 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4308 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4309
4310 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4311 {
4312         u32 data2, line;
4313         u32 desc, time, count, base, data1;
4314         u32 blink1, blink2, ilink1, ilink2;
4315         int rc;
4316
4317         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4318
4319         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4320                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4321                 return;
4322         }
4323
4324         rc = iwl4965_grab_nic_access(priv);
4325         if (rc) {
4326                 IWL_WARNING("Can not read from adapter at this time.\n");
4327                 return;
4328         }
4329
4330         count = iwl4965_read_targ_mem(priv, base);
4331
4332         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4333                 IWL_ERROR("Start IWL Error Log Dump:\n");
4334                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4335         }
4336
4337         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4338         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4339         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4340         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4341         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4342         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4343         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4344         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4345         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4346
4347         IWL_ERROR("Desc               Time       "
4348                   "data1      data2      line\n");
4349         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4350                   desc_lookup(desc), desc, time, data1, data2, line);
4351         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4352         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4353                   ilink1, ilink2);
4354
4355         iwl4965_release_nic_access(priv);
4356 }
4357
4358 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4359
4360 /**
4361  * iwl4965_print_event_log - Dump error event log to syslog
4362  *
4363  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4364  */
4365 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4366                                 u32 num_events, u32 mode)
4367 {
4368         u32 i;
4369         u32 base;       /* SRAM byte address of event log header */
4370         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4371         u32 ptr;        /* SRAM byte address of log data */
4372         u32 ev, time, data; /* event log data */
4373
4374         if (num_events == 0)
4375                 return;
4376
4377         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4378
4379         if (mode == 0)
4380                 event_size = 2 * sizeof(u32);
4381         else
4382                 event_size = 3 * sizeof(u32);
4383
4384         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4385
4386         /* "time" is actually "data" for mode 0 (no timestamp).
4387          * place event id # at far right for easier visual parsing. */
4388         for (i = 0; i < num_events; i++) {
4389                 ev = iwl4965_read_targ_mem(priv, ptr);
4390                 ptr += sizeof(u32);
4391                 time = iwl4965_read_targ_mem(priv, ptr);
4392                 ptr += sizeof(u32);
4393                 if (mode == 0)
4394                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4395                 else {
4396                         data = iwl4965_read_targ_mem(priv, ptr);
4397                         ptr += sizeof(u32);
4398                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4399                 }
4400         }
4401 }
4402
4403 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4404 {
4405         int rc;
4406         u32 base;       /* SRAM byte address of event log header */
4407         u32 capacity;   /* event log capacity in # entries */
4408         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4409         u32 num_wraps;  /* # times uCode wrapped to top of log */
4410         u32 next_entry; /* index of next entry to be written by uCode */
4411         u32 size;       /* # entries that we'll print */
4412
4413         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4414         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4415                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4416                 return;
4417         }
4418
4419         rc = iwl4965_grab_nic_access(priv);
4420         if (rc) {
4421                 IWL_WARNING("Can not read from adapter at this time.\n");
4422                 return;
4423         }
4424
4425         /* event log header */
4426         capacity = iwl4965_read_targ_mem(priv, base);
4427         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4428         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4429         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4430
4431         size = num_wraps ? capacity : next_entry;
4432
4433         /* bail out if nothing in log */
4434         if (size == 0) {
4435                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4436                 iwl4965_release_nic_access(priv);
4437                 return;
4438         }
4439
4440         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4441                   size, num_wraps);
4442
4443         /* if uCode has wrapped back to top of log, start at the oldest entry,
4444          * i.e the next one that uCode would fill. */
4445         if (num_wraps)
4446                 iwl4965_print_event_log(priv, next_entry,
4447                                     capacity - next_entry, mode);
4448
4449         /* (then/else) start at top of log */
4450         iwl4965_print_event_log(priv, 0, next_entry, mode);
4451
4452         iwl4965_release_nic_access(priv);
4453 }
4454
4455 /**
4456  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4457  */
4458 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4459 {
4460         /* Set the FW error flag -- cleared on iwl4965_down */
4461         set_bit(STATUS_FW_ERROR, &priv->status);
4462
4463         /* Cancel currently queued command. */
4464         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4465
4466 #ifdef CONFIG_IWLWIFI_DEBUG
4467         if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4468                 iwl4965_dump_nic_error_log(priv);
4469                 iwl4965_dump_nic_event_log(priv);
4470                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4471         }
4472 #endif
4473
4474         wake_up_interruptible(&priv->wait_command_queue);
4475
4476         /* Keep the restart process from trying to send host
4477          * commands by clearing the INIT status bit */
4478         clear_bit(STATUS_READY, &priv->status);
4479
4480         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4481                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4482                           "Restarting adapter due to uCode error.\n");
4483
4484                 if (iwl4965_is_associated(priv)) {
4485                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4486                                sizeof(priv->recovery_rxon));
4487                         priv->error_recovering = 1;
4488                 }
4489                 queue_work(priv->workqueue, &priv->restart);
4490         }
4491 }
4492
4493 static void iwl4965_error_recovery(struct iwl_priv *priv)
4494 {
4495         unsigned long flags;
4496
4497         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4498                sizeof(priv->staging_rxon));
4499         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4500         iwl4965_commit_rxon(priv);
4501
4502         iwl4965_rxon_add_station(priv, priv->bssid, 1);
4503
4504         spin_lock_irqsave(&priv->lock, flags);
4505         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4506         priv->error_recovering = 0;
4507         spin_unlock_irqrestore(&priv->lock, flags);
4508 }
4509
4510 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4511 {
4512         u32 inta, handled = 0;
4513         u32 inta_fh;
4514         unsigned long flags;
4515 #ifdef CONFIG_IWLWIFI_DEBUG
4516         u32 inta_mask;
4517 #endif
4518
4519         spin_lock_irqsave(&priv->lock, flags);
4520
4521         /* Ack/clear/reset pending uCode interrupts.
4522          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4523          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4524         inta = iwl4965_read32(priv, CSR_INT);
4525         iwl4965_write32(priv, CSR_INT, inta);
4526
4527         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4528          * Any new interrupts that happen after this, either while we're
4529          * in this tasklet, or later, will show up in next ISR/tasklet. */
4530         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4531         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4532
4533 #ifdef CONFIG_IWLWIFI_DEBUG
4534         if (iwl_debug_level & IWL_DL_ISR) {
4535                 /* just for debug */
4536                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4537                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4538                               inta, inta_mask, inta_fh);
4539         }
4540 #endif
4541
4542         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4543          * atomic, make sure that inta covers all the interrupts that
4544          * we've discovered, even if FH interrupt came in just after
4545          * reading CSR_INT. */
4546         if (inta_fh & CSR49_FH_INT_RX_MASK)
4547                 inta |= CSR_INT_BIT_FH_RX;
4548         if (inta_fh & CSR49_FH_INT_TX_MASK)
4549                 inta |= CSR_INT_BIT_FH_TX;
4550
4551         /* Now service all interrupt bits discovered above. */
4552         if (inta & CSR_INT_BIT_HW_ERR) {
4553                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4554
4555                 /* Tell the device to stop sending interrupts */
4556                 iwl4965_disable_interrupts(priv);
4557
4558                 iwl4965_irq_handle_error(priv);
4559
4560                 handled |= CSR_INT_BIT_HW_ERR;
4561
4562                 spin_unlock_irqrestore(&priv->lock, flags);
4563
4564                 return;
4565         }
4566
4567 #ifdef CONFIG_IWLWIFI_DEBUG
4568         if (iwl_debug_level & (IWL_DL_ISR)) {
4569                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4570                 if (inta & CSR_INT_BIT_SCD)
4571                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4572                                       "the frame/frames.\n");
4573
4574                 /* Alive notification via Rx interrupt will do the real work */
4575                 if (inta & CSR_INT_BIT_ALIVE)
4576                         IWL_DEBUG_ISR("Alive interrupt\n");
4577         }
4578 #endif
4579         /* Safely ignore these bits for debug checks below */
4580         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4581
4582         /* HW RF KILL switch toggled */
4583         if (inta & CSR_INT_BIT_RF_KILL) {
4584                 int hw_rf_kill = 0;
4585                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
4586                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4587                         hw_rf_kill = 1;
4588
4589                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4590                                 "RF_KILL bit toggled to %s.\n",
4591                                 hw_rf_kill ? "disable radio":"enable radio");
4592
4593                 /* Queue restart only if RF_KILL switch was set to "kill"
4594                  *   when we loaded driver, and is now set to "enable".
4595                  * After we're Alive, RF_KILL gets handled by
4596                  *   iwl4965_rx_card_state_notif() */
4597                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4598                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4599                         queue_work(priv->workqueue, &priv->restart);
4600                 }
4601
4602                 handled |= CSR_INT_BIT_RF_KILL;
4603         }
4604
4605         /* Chip got too hot and stopped itself */
4606         if (inta & CSR_INT_BIT_CT_KILL) {
4607                 IWL_ERROR("Microcode CT kill error detected.\n");
4608                 handled |= CSR_INT_BIT_CT_KILL;
4609         }
4610
4611         /* Error detected by uCode */
4612         if (inta & CSR_INT_BIT_SW_ERR) {
4613                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4614                           inta);
4615                 iwl4965_irq_handle_error(priv);
4616                 handled |= CSR_INT_BIT_SW_ERR;
4617         }
4618
4619         /* uCode wakes up after power-down sleep */
4620         if (inta & CSR_INT_BIT_WAKEUP) {
4621                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4622                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4623                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4624                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4625                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4626                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4627                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4628                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4629
4630                 handled |= CSR_INT_BIT_WAKEUP;
4631         }
4632
4633         /* All uCode command responses, including Tx command responses,
4634          * Rx "responses" (frame-received notification), and other
4635          * notifications from uCode come through here*/
4636         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4637                 iwl4965_rx_handle(priv);
4638                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4639         }
4640
4641         if (inta & CSR_INT_BIT_FH_TX) {
4642                 IWL_DEBUG_ISR("Tx interrupt\n");
4643                 handled |= CSR_INT_BIT_FH_TX;
4644         }
4645
4646         if (inta & ~handled)
4647                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4648
4649         if (inta & ~CSR_INI_SET_MASK) {
4650                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4651                          inta & ~CSR_INI_SET_MASK);
4652                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4653         }
4654
4655         /* Re-enable all interrupts */
4656         iwl4965_enable_interrupts(priv);
4657
4658 #ifdef CONFIG_IWLWIFI_DEBUG
4659         if (iwl_debug_level & (IWL_DL_ISR)) {
4660                 inta = iwl4965_read32(priv, CSR_INT);
4661                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4662                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4663                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4664                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4665         }
4666 #endif
4667         spin_unlock_irqrestore(&priv->lock, flags);
4668 }
4669
4670 static irqreturn_t iwl4965_isr(int irq, void *data)
4671 {
4672         struct iwl_priv *priv = data;
4673         u32 inta, inta_mask;
4674         u32 inta_fh;
4675         if (!priv)
4676                 return IRQ_NONE;
4677
4678         spin_lock(&priv->lock);
4679
4680         /* Disable (but don't clear!) interrupts here to avoid
4681          *    back-to-back ISRs and sporadic interrupts from our NIC.
4682          * If we have something to service, the tasklet will re-enable ints.
4683          * If we *don't* have something, we'll re-enable before leaving here. */
4684         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
4685         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4686
4687         /* Discover which interrupts are active/pending */
4688         inta = iwl4965_read32(priv, CSR_INT);
4689         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4690
4691         /* Ignore interrupt if there's nothing in NIC to service.
4692          * This may be due to IRQ shared with another device,
4693          * or due to sporadic interrupts thrown from our NIC. */
4694         if (!inta && !inta_fh) {
4695                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4696                 goto none;
4697         }
4698
4699         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4700                 /* Hardware disappeared. It might have already raised
4701                  * an interrupt */
4702                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4703                 goto unplugged;
4704         }
4705
4706         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4707                       inta, inta_mask, inta_fh);
4708
4709         inta &= ~CSR_INT_BIT_SCD;
4710
4711         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4712         if (likely(inta || inta_fh))
4713                 tasklet_schedule(&priv->irq_tasklet);
4714
4715  unplugged:
4716         spin_unlock(&priv->lock);
4717         return IRQ_HANDLED;
4718
4719  none:
4720         /* re-enable interrupts here since we don't have anything to service. */
4721         iwl4965_enable_interrupts(priv);
4722         spin_unlock(&priv->lock);
4723         return IRQ_NONE;
4724 }
4725
4726 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4727  * sending probe req.  This should be set long enough to hear probe responses
4728  * from more than one AP.  */
4729 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
4730 #define IWL_ACTIVE_DWELL_TIME_52    (10)
4731
4732 /* For faster active scanning, scan will move to the next channel if fewer than
4733  * PLCP_QUIET_THRESH packets are heard on this channel within
4734  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4735  * time if it's a quiet channel (nothing responded to our probe, and there's
4736  * no other traffic).
4737  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4738 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4739 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
4740
4741 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4742  * Must be set longer than active dwell time.
4743  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4744 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4745 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4746 #define IWL_PASSIVE_DWELL_BASE      (100)
4747 #define IWL_CHANNEL_TUNE_TIME       5
4748
4749 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4750                                                 enum ieee80211_band band)
4751 {
4752         if (band == IEEE80211_BAND_5GHZ)
4753                 return IWL_ACTIVE_DWELL_TIME_52;
4754         else
4755                 return IWL_ACTIVE_DWELL_TIME_24;
4756 }
4757
4758 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4759                                           enum ieee80211_band band)
4760 {
4761         u16 active = iwl4965_get_active_dwell_time(priv, band);
4762         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4763             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4764             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4765
4766         if (iwl4965_is_associated(priv)) {
4767                 /* If we're associated, we clamp the maximum passive
4768                  * dwell time to be 98% of the beacon interval (minus
4769                  * 2 * channel tune time) */
4770                 passive = priv->beacon_int;
4771                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4772                         passive = IWL_PASSIVE_DWELL_BASE;
4773                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4774         }
4775
4776         if (passive <= active)
4777                 passive = active + 1;
4778
4779         return passive;
4780 }
4781
4782 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4783                                          enum ieee80211_band band,
4784                                      u8 is_active, u8 direct_mask,
4785                                      struct iwl4965_scan_channel *scan_ch)
4786 {
4787         const struct ieee80211_channel *channels = NULL;
4788         const struct ieee80211_supported_band *sband;
4789         const struct iwl_channel_info *ch_info;
4790         u16 passive_dwell = 0;
4791         u16 active_dwell = 0;
4792         int added, i;
4793
4794         sband = iwl4965_get_hw_mode(priv, band);
4795         if (!sband)
4796                 return 0;
4797
4798         channels = sband->channels;
4799
4800         active_dwell = iwl4965_get_active_dwell_time(priv, band);
4801         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4802
4803         for (i = 0, added = 0; i < sband->n_channels; i++) {
4804                 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
4805                     le16_to_cpu(priv->active_rxon.channel)) {
4806                         if (iwl4965_is_associated(priv)) {
4807                                 IWL_DEBUG_SCAN
4808                                     ("Skipping current channel %d\n",
4809                                      le16_to_cpu(priv->active_rxon.channel));
4810                                 continue;
4811                         }
4812                 } else if (priv->only_active_channel)
4813                         continue;
4814
4815                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4816
4817                 ch_info = iwl_get_channel_info(priv, band,
4818                                          scan_ch->channel);
4819                 if (!is_channel_valid(ch_info)) {
4820                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4821                                        scan_ch->channel);
4822                         continue;
4823                 }
4824
4825                 if (!is_active || is_channel_passive(ch_info) ||
4826                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4827                         scan_ch->type = 0;      /* passive */
4828                 else
4829                         scan_ch->type = 1;      /* active */
4830
4831                 if (scan_ch->type & 1)
4832                         scan_ch->type |= (direct_mask << 1);
4833
4834                 if (is_channel_narrow(ch_info))
4835                         scan_ch->type |= (1 << 7);
4836
4837                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4838                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4839
4840                 /* Set txpower levels to defaults */
4841                 scan_ch->tpc.dsp_atten = 110;
4842                 /* scan_pwr_info->tpc.dsp_atten; */
4843
4844                 /*scan_pwr_info->tpc.tx_gain; */
4845                 if (band == IEEE80211_BAND_5GHZ)
4846                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4847                 else {
4848                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4849                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4850                          * power level:
4851                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4852                          */
4853                 }
4854
4855                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4856                                scan_ch->channel,
4857                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4858                                (scan_ch->type & 1) ?
4859                                active_dwell : passive_dwell);
4860
4861                 scan_ch++;
4862                 added++;
4863         }
4864
4865         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4866         return added;
4867 }
4868
4869 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4870                               struct ieee80211_rate *rates)
4871 {
4872         int i;
4873
4874         for (i = 0; i < IWL_RATE_COUNT; i++) {
4875                 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4876                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4877                 rates[i].hw_value_short = i;
4878                 rates[i].flags = 0;
4879                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4880                         /*
4881                          * If CCK != 1M then set short preamble rate flag.
4882                          */
4883                         rates[i].flags |=
4884                                 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4885                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
4886                 }
4887         }
4888 }
4889
4890 /**
4891  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4892  */
4893 int iwl4965_init_geos(struct iwl_priv *priv)
4894 {
4895         struct iwl_channel_info *ch;
4896         struct ieee80211_supported_band *sband;
4897         struct ieee80211_channel *channels;
4898         struct ieee80211_channel *geo_ch;
4899         struct ieee80211_rate *rates;
4900         int i = 0;
4901
4902         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4903             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4904                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4905                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4906                 return 0;
4907         }
4908
4909         channels = kzalloc(sizeof(struct ieee80211_channel) *
4910                            priv->channel_count, GFP_KERNEL);
4911         if (!channels)
4912                 return -ENOMEM;
4913
4914         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4915                         GFP_KERNEL);
4916         if (!rates) {
4917                 kfree(channels);
4918                 return -ENOMEM;
4919         }
4920
4921         /* 5.2GHz channels start after the 2.4GHz channels */
4922         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4923         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4924         /* just OFDM */
4925         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4926         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4927
4928         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
4929
4930         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4931         sband->channels = channels;
4932         /* OFDM & CCK */
4933         sband->bitrates = rates;
4934         sband->n_bitrates = IWL_RATE_COUNT;
4935
4936         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
4937
4938         priv->ieee_channels = channels;
4939         priv->ieee_rates = rates;
4940
4941         iwl4965_init_hw_rates(priv, rates);
4942
4943         for (i = 0;  i < priv->channel_count; i++) {
4944                 ch = &priv->channel_info[i];
4945
4946                 /* FIXME: might be removed if scan is OK */
4947                 if (!is_channel_valid(ch))
4948                         continue;
4949
4950                 if (is_channel_a_band(ch))
4951                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4952                 else
4953                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4954
4955                 geo_ch = &sband->channels[sband->n_channels++];
4956
4957                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4958                 geo_ch->max_power = ch->max_power_avg;
4959                 geo_ch->max_antenna_gain = 0xff;
4960                 geo_ch->hw_value = ch->channel;
4961
4962                 if (is_channel_valid(ch)) {
4963                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4964                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4965
4966                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4967                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4968
4969                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4970                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4971
4972                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4973                                 priv->max_channel_txpower_limit =
4974                                     ch->max_power_avg;
4975                 } else {
4976                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4977                 }
4978
4979                 /* Save flags for reg domain usage */
4980                 geo_ch->orig_flags = geo_ch->flags;
4981
4982                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4983                                 ch->channel, geo_ch->center_freq,
4984                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4985                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4986                                 "restricted" : "valid",
4987                                  geo_ch->flags);
4988         }
4989
4990         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4991              priv->cfg->sku & IWL_SKU_A) {
4992                 printk(KERN_INFO DRV_NAME
4993                        ": Incorrectly detected BG card as ABG.  Please send "
4994                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4995                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
4996                 priv->cfg->sku &= ~IWL_SKU_A;
4997         }
4998
4999         printk(KERN_INFO DRV_NAME
5000                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5001                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5002                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5003
5004         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5005         priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5006
5007         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5008
5009         return 0;
5010 }
5011
5012 /*
5013  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5014  */
5015 void iwl4965_free_geos(struct iwl_priv *priv)
5016 {
5017         kfree(priv->ieee_channels);
5018         kfree(priv->ieee_rates);
5019         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5020 }
5021
5022 /******************************************************************************
5023  *
5024  * uCode download functions
5025  *
5026  ******************************************************************************/
5027
5028 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
5029 {
5030         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5031         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5032         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5033         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5034         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5035         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5036 }
5037
5038 /**
5039  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5040  *     looking at all data.
5041  */
5042 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
5043                                  u32 len)
5044 {
5045         u32 val;
5046         u32 save_len = len;
5047         int rc = 0;
5048         u32 errcnt;
5049
5050         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5051
5052         rc = iwl4965_grab_nic_access(priv);
5053         if (rc)
5054                 return rc;
5055
5056         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5057
5058         errcnt = 0;
5059         for (; len > 0; len -= sizeof(u32), image++) {
5060                 /* read data comes through single port, auto-incr addr */
5061                 /* NOTE: Use the debugless read so we don't flood kernel log
5062                  * if IWL_DL_IO is set */
5063                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5064                 if (val != le32_to_cpu(*image)) {
5065                         IWL_ERROR("uCode INST section is invalid at "
5066                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5067                                   save_len - len, val, le32_to_cpu(*image));
5068                         rc = -EIO;
5069                         errcnt++;
5070                         if (errcnt >= 20)
5071                                 break;
5072                 }
5073         }
5074
5075         iwl4965_release_nic_access(priv);
5076
5077         if (!errcnt)
5078                 IWL_DEBUG_INFO
5079                     ("ucode image in INSTRUCTION memory is good\n");
5080
5081         return rc;
5082 }
5083
5084
5085 /**
5086  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5087  *   using sample data 100 bytes apart.  If these sample points are good,
5088  *   it's a pretty good bet that everything between them is good, too.
5089  */
5090 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5091 {
5092         u32 val;
5093         int rc = 0;
5094         u32 errcnt = 0;
5095         u32 i;
5096
5097         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5098
5099         rc = iwl4965_grab_nic_access(priv);
5100         if (rc)
5101                 return rc;
5102
5103         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5104                 /* read data comes through single port, auto-incr addr */
5105                 /* NOTE: Use the debugless read so we don't flood kernel log
5106                  * if IWL_DL_IO is set */
5107                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5108                         i + RTC_INST_LOWER_BOUND);
5109                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5110                 if (val != le32_to_cpu(*image)) {
5111 #if 0 /* Enable this if you want to see details */
5112                         IWL_ERROR("uCode INST section is invalid at "
5113                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5114                                   i, val, *image);
5115 #endif
5116                         rc = -EIO;
5117                         errcnt++;
5118                         if (errcnt >= 3)
5119                                 break;
5120                 }
5121         }
5122
5123         iwl4965_release_nic_access(priv);
5124
5125         return rc;
5126 }
5127
5128
5129 /**
5130  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5131  *    and verify its contents
5132  */
5133 static int iwl4965_verify_ucode(struct iwl_priv *priv)
5134 {
5135         __le32 *image;
5136         u32 len;
5137         int rc = 0;
5138
5139         /* Try bootstrap */
5140         image = (__le32 *)priv->ucode_boot.v_addr;
5141         len = priv->ucode_boot.len;
5142         rc = iwl4965_verify_inst_sparse(priv, image, len);
5143         if (rc == 0) {
5144                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5145                 return 0;
5146         }
5147
5148         /* Try initialize */
5149         image = (__le32 *)priv->ucode_init.v_addr;
5150         len = priv->ucode_init.len;
5151         rc = iwl4965_verify_inst_sparse(priv, image, len);
5152         if (rc == 0) {
5153                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5154                 return 0;
5155         }
5156
5157         /* Try runtime/protocol */
5158         image = (__le32 *)priv->ucode_code.v_addr;
5159         len = priv->ucode_code.len;
5160         rc = iwl4965_verify_inst_sparse(priv, image, len);
5161         if (rc == 0) {
5162                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5163                 return 0;
5164         }
5165
5166         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5167
5168         /* Since nothing seems to match, show first several data entries in
5169          * instruction SRAM, so maybe visual inspection will give a clue.
5170          * Selection of bootstrap image (vs. other images) is arbitrary. */
5171         image = (__le32 *)priv->ucode_boot.v_addr;
5172         len = priv->ucode_boot.len;
5173         rc = iwl4965_verify_inst_full(priv, image, len);
5174
5175         return rc;
5176 }
5177
5178
5179 /* check contents of special bootstrap uCode SRAM */
5180 static int iwl4965_verify_bsm(struct iwl_priv *priv)
5181 {
5182         __le32 *image = priv->ucode_boot.v_addr;
5183         u32 len = priv->ucode_boot.len;
5184         u32 reg;
5185         u32 val;
5186
5187         IWL_DEBUG_INFO("Begin verify bsm\n");
5188
5189         /* verify BSM SRAM contents */
5190         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
5191         for (reg = BSM_SRAM_LOWER_BOUND;
5192              reg < BSM_SRAM_LOWER_BOUND + len;
5193              reg += sizeof(u32), image ++) {
5194                 val = iwl4965_read_prph(priv, reg);
5195                 if (val != le32_to_cpu(*image)) {
5196                         IWL_ERROR("BSM uCode verification failed at "
5197                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5198                                   BSM_SRAM_LOWER_BOUND,
5199                                   reg - BSM_SRAM_LOWER_BOUND, len,
5200                                   val, le32_to_cpu(*image));
5201                         return -EIO;
5202                 }
5203         }
5204
5205         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5206
5207         return 0;
5208 }
5209
5210 /**
5211  * iwl4965_load_bsm - Load bootstrap instructions
5212  *
5213  * BSM operation:
5214  *
5215  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5216  * in special SRAM that does not power down during RFKILL.  When powering back
5217  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5218  * the bootstrap program into the on-board processor, and starts it.
5219  *
5220  * The bootstrap program loads (via DMA) instructions and data for a new
5221  * program from host DRAM locations indicated by the host driver in the
5222  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5223  * automatically.
5224  *
5225  * When initializing the NIC, the host driver points the BSM to the
5226  * "initialize" uCode image.  This uCode sets up some internal data, then
5227  * notifies host via "initialize alive" that it is complete.
5228  *
5229  * The host then replaces the BSM_DRAM_* pointer values to point to the
5230  * normal runtime uCode instructions and a backup uCode data cache buffer
5231  * (filled initially with starting data values for the on-board processor),
5232  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5233  * which begins normal operation.
5234  *
5235  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5236  * the backup data cache in DRAM before SRAM is powered down.
5237  *
5238  * When powering back up, the BSM loads the bootstrap program.  This reloads
5239  * the runtime uCode instructions and the backup data cache into SRAM,
5240  * and re-launches the runtime uCode from where it left off.
5241  */
5242 static int iwl4965_load_bsm(struct iwl_priv *priv)
5243 {
5244         __le32 *image = priv->ucode_boot.v_addr;
5245         u32 len = priv->ucode_boot.len;
5246         dma_addr_t pinst;
5247         dma_addr_t pdata;
5248         u32 inst_len;
5249         u32 data_len;
5250         int rc;
5251         int i;
5252         u32 done;
5253         u32 reg_offset;
5254
5255         IWL_DEBUG_INFO("Begin load bsm\n");
5256
5257         /* make sure bootstrap program is no larger than BSM's SRAM size */
5258         if (len > IWL_MAX_BSM_SIZE)
5259                 return -EINVAL;
5260
5261         /* Tell bootstrap uCode where to find the "Initialize" uCode
5262          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5263          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
5264          *        after the "initialize" uCode has run, to point to
5265          *        runtime/protocol instructions and backup data cache. */
5266         pinst = priv->ucode_init.p_addr >> 4;
5267         pdata = priv->ucode_init_data.p_addr >> 4;
5268         inst_len = priv->ucode_init.len;
5269         data_len = priv->ucode_init_data.len;
5270
5271         rc = iwl4965_grab_nic_access(priv);
5272         if (rc)
5273                 return rc;
5274
5275         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5276         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5277         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5278         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5279
5280         /* Fill BSM memory with bootstrap instructions */
5281         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5282              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5283              reg_offset += sizeof(u32), image++)
5284                 _iwl4965_write_prph(priv, reg_offset,
5285                                           le32_to_cpu(*image));
5286
5287         rc = iwl4965_verify_bsm(priv);
5288         if (rc) {
5289                 iwl4965_release_nic_access(priv);
5290                 return rc;
5291         }
5292
5293         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5294         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5295         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
5296                                  RTC_INST_LOWER_BOUND);
5297         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5298
5299         /* Load bootstrap code into instruction SRAM now,
5300          *   to prepare to load "initialize" uCode */
5301         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5302                 BSM_WR_CTRL_REG_BIT_START);
5303
5304         /* Wait for load of bootstrap uCode to finish */
5305         for (i = 0; i < 100; i++) {
5306                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
5307                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5308                         break;
5309                 udelay(10);
5310         }
5311         if (i < 100)
5312                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5313         else {
5314                 IWL_ERROR("BSM write did not complete!\n");
5315                 return -EIO;
5316         }
5317
5318         /* Enable future boot loads whenever power management unit triggers it
5319          *   (e.g. when powering back up after power-save shutdown) */
5320         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5321                 BSM_WR_CTRL_REG_BIT_START_EN);
5322
5323         iwl4965_release_nic_access(priv);
5324
5325         return 0;
5326 }
5327
5328 static void iwl4965_nic_start(struct iwl_priv *priv)
5329 {
5330         /* Remove all resets to allow NIC to operate */
5331         iwl4965_write32(priv, CSR_RESET, 0);
5332 }
5333
5334
5335 /**
5336  * iwl4965_read_ucode - Read uCode images from disk file.
5337  *
5338  * Copy into buffers for card to fetch via bus-mastering
5339  */
5340 static int iwl4965_read_ucode(struct iwl_priv *priv)
5341 {
5342         struct iwl4965_ucode *ucode;
5343         int ret;
5344         const struct firmware *ucode_raw;
5345         const char *name = priv->cfg->fw_name;
5346         u8 *src;
5347         size_t len;
5348         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5349
5350         /* Ask kernel firmware_class module to get the boot firmware off disk.
5351          * request_firmware() is synchronous, file is in memory on return. */
5352         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5353         if (ret < 0) {
5354                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5355                                         name, ret);
5356                 goto error;
5357         }
5358
5359         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5360                        name, ucode_raw->size);
5361
5362         /* Make sure that we got at least our header! */
5363         if (ucode_raw->size < sizeof(*ucode)) {
5364                 IWL_ERROR("File size way too small!\n");
5365                 ret = -EINVAL;
5366                 goto err_release;
5367         }
5368
5369         /* Data from ucode file:  header followed by uCode images */
5370         ucode = (void *)ucode_raw->data;
5371
5372         ver = le32_to_cpu(ucode->ver);
5373         inst_size = le32_to_cpu(ucode->inst_size);
5374         data_size = le32_to_cpu(ucode->data_size);
5375         init_size = le32_to_cpu(ucode->init_size);
5376         init_data_size = le32_to_cpu(ucode->init_data_size);
5377         boot_size = le32_to_cpu(ucode->boot_size);
5378
5379         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5380         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5381                        inst_size);
5382         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5383                        data_size);
5384         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5385                        init_size);
5386         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5387                        init_data_size);
5388         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5389                        boot_size);
5390
5391         /* Verify size of file vs. image size info in file's header */
5392         if (ucode_raw->size < sizeof(*ucode) +
5393                 inst_size + data_size + init_size +
5394                 init_data_size + boot_size) {
5395
5396                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5397                                (int)ucode_raw->size);
5398                 ret = -EINVAL;
5399                 goto err_release;
5400         }
5401
5402         /* Verify that uCode images will fit in card's SRAM */
5403         if (inst_size > IWL_MAX_INST_SIZE) {
5404                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5405                                inst_size);
5406                 ret = -EINVAL;
5407                 goto err_release;
5408         }
5409
5410         if (data_size > IWL_MAX_DATA_SIZE) {
5411                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5412                                 data_size);
5413                 ret = -EINVAL;
5414                 goto err_release;
5415         }
5416         if (init_size > IWL_MAX_INST_SIZE) {
5417                 IWL_DEBUG_INFO
5418                     ("uCode init instr len %d too large to fit in\n",
5419                       init_size);
5420                 ret = -EINVAL;
5421                 goto err_release;
5422         }
5423         if (init_data_size > IWL_MAX_DATA_SIZE) {
5424                 IWL_DEBUG_INFO
5425                     ("uCode init data len %d too large to fit in\n",
5426                       init_data_size);
5427                 ret = -EINVAL;
5428                 goto err_release;
5429         }
5430         if (boot_size > IWL_MAX_BSM_SIZE) {
5431                 IWL_DEBUG_INFO
5432                     ("uCode boot instr len %d too large to fit in\n",
5433                       boot_size);
5434                 ret = -EINVAL;
5435                 goto err_release;
5436         }
5437
5438         /* Allocate ucode buffers for card's bus-master loading ... */
5439
5440         /* Runtime instructions and 2 copies of data:
5441          * 1) unmodified from disk
5442          * 2) backup cache for save/restore during power-downs */
5443         priv->ucode_code.len = inst_size;
5444         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5445
5446         priv->ucode_data.len = data_size;
5447         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5448
5449         priv->ucode_data_backup.len = data_size;
5450         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5451
5452         /* Initialization instructions and data */
5453         if (init_size && init_data_size) {
5454                 priv->ucode_init.len = init_size;
5455                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5456
5457                 priv->ucode_init_data.len = init_data_size;
5458                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5459
5460                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5461                         goto err_pci_alloc;
5462         }
5463
5464         /* Bootstrap (instructions only, no data) */
5465         if (boot_size) {
5466                 priv->ucode_boot.len = boot_size;
5467                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5468
5469                 if (!priv->ucode_boot.v_addr)
5470                         goto err_pci_alloc;
5471         }
5472
5473         /* Copy images into buffers for card's bus-master reads ... */
5474
5475         /* Runtime instructions (first block of data in file) */
5476         src = &ucode->data[0];
5477         len = priv->ucode_code.len;
5478         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5479         memcpy(priv->ucode_code.v_addr, src, len);
5480         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5481                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5482
5483         /* Runtime data (2nd block)
5484          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
5485         src = &ucode->data[inst_size];
5486         len = priv->ucode_data.len;
5487         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5488         memcpy(priv->ucode_data.v_addr, src, len);
5489         memcpy(priv->ucode_data_backup.v_addr, src, len);
5490
5491         /* Initialization instructions (3rd block) */
5492         if (init_size) {
5493                 src = &ucode->data[inst_size + data_size];
5494                 len = priv->ucode_init.len;
5495                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5496                                 len);
5497                 memcpy(priv->ucode_init.v_addr, src, len);
5498         }
5499
5500         /* Initialization data (4th block) */
5501         if (init_data_size) {
5502                 src = &ucode->data[inst_size + data_size + init_size];
5503                 len = priv->ucode_init_data.len;
5504                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5505                                len);
5506                 memcpy(priv->ucode_init_data.v_addr, src, len);
5507         }
5508
5509         /* Bootstrap instructions (5th block) */
5510         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5511         len = priv->ucode_boot.len;
5512         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5513         memcpy(priv->ucode_boot.v_addr, src, len);
5514
5515         /* We have our copies now, allow OS release its copies */
5516         release_firmware(ucode_raw);
5517         return 0;
5518
5519  err_pci_alloc:
5520         IWL_ERROR("failed to allocate pci memory\n");
5521         ret = -ENOMEM;
5522         iwl4965_dealloc_ucode_pci(priv);
5523
5524  err_release:
5525         release_firmware(ucode_raw);
5526
5527  error:
5528         return ret;
5529 }
5530
5531
5532 /**
5533  * iwl4965_set_ucode_ptrs - Set uCode address location
5534  *
5535  * Tell initialization uCode where to find runtime uCode.
5536  *
5537  * BSM registers initially contain pointers to initialization uCode.
5538  * We need to replace them to load runtime uCode inst and data,
5539  * and to save runtime data when powering down.
5540  */
5541 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5542 {
5543         dma_addr_t pinst;
5544         dma_addr_t pdata;
5545         int rc = 0;
5546         unsigned long flags;
5547
5548         /* bits 35:4 for 4965 */
5549         pinst = priv->ucode_code.p_addr >> 4;
5550         pdata = priv->ucode_data_backup.p_addr >> 4;
5551
5552         spin_lock_irqsave(&priv->lock, flags);
5553         rc = iwl4965_grab_nic_access(priv);
5554         if (rc) {
5555                 spin_unlock_irqrestore(&priv->lock, flags);
5556                 return rc;
5557         }
5558
5559         /* Tell bootstrap uCode where to find image to load */
5560         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5561         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5562         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5563                                  priv->ucode_data.len);
5564
5565         /* Inst bytecount must be last to set up, bit 31 signals uCode
5566          *   that all new ptr/size info is in place */
5567         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5568                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5569
5570         iwl4965_release_nic_access(priv);
5571
5572         spin_unlock_irqrestore(&priv->lock, flags);
5573
5574         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5575
5576         return rc;
5577 }
5578
5579 /**
5580  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5581  *
5582  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5583  *
5584  * The 4965 "initialize" ALIVE reply contains calibration data for:
5585  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
5586  *   (3945 does not contain this data).
5587  *
5588  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5589 */
5590 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5591 {
5592         /* Check alive response for "valid" sign from uCode */
5593         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5594                 /* We had an error bringing up the hardware, so take it
5595                  * all the way back down so we can try again */
5596                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5597                 goto restart;
5598         }
5599
5600         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5601          * This is a paranoid check, because we would not have gotten the
5602          * "initialize" alive if code weren't properly loaded.  */
5603         if (iwl4965_verify_ucode(priv)) {
5604                 /* Runtime instruction load was bad;
5605                  * take it all the way back down so we can try again */
5606                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5607                 goto restart;
5608         }
5609
5610         /* Calculate temperature */
5611         priv->temperature = iwl4965_get_temperature(priv);
5612
5613         /* Send pointers to protocol/runtime uCode image ... init code will
5614          * load and launch runtime uCode, which will send us another "Alive"
5615          * notification. */
5616         IWL_DEBUG_INFO("Initialization Alive received.\n");
5617         if (iwl4965_set_ucode_ptrs(priv)) {
5618                 /* Runtime instruction load won't happen;
5619                  * take it all the way back down so we can try again */
5620                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5621                 goto restart;
5622         }
5623         return;
5624
5625  restart:
5626         queue_work(priv->workqueue, &priv->restart);
5627 }
5628
5629
5630 /**
5631  * iwl4965_alive_start - called after REPLY_ALIVE notification received
5632  *                   from protocol/runtime uCode (initialization uCode's
5633  *                   Alive gets handled by iwl4965_init_alive_start()).
5634  */
5635 static void iwl4965_alive_start(struct iwl_priv *priv)
5636 {
5637         int rc = 0;
5638
5639         IWL_DEBUG_INFO("Runtime Alive received.\n");
5640
5641         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5642                 /* We had an error bringing up the hardware, so take it
5643                  * all the way back down so we can try again */
5644                 IWL_DEBUG_INFO("Alive failed.\n");
5645                 goto restart;
5646         }
5647
5648         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5649          * This is a paranoid check, because we would not have gotten the
5650          * "runtime" alive if code weren't properly loaded.  */
5651         if (iwl4965_verify_ucode(priv)) {
5652                 /* Runtime instruction load was bad;
5653                  * take it all the way back down so we can try again */
5654                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5655                 goto restart;
5656         }
5657
5658         iwlcore_clear_stations_table(priv);
5659
5660         rc = iwl4965_alive_notify(priv);
5661         if (rc) {
5662                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5663                             rc);
5664                 goto restart;
5665         }
5666
5667         /* After the ALIVE response, we can send host commands to 4965 uCode */
5668         set_bit(STATUS_ALIVE, &priv->status);
5669
5670         /* Clear out the uCode error bit if it is set */
5671         clear_bit(STATUS_FW_ERROR, &priv->status);
5672
5673         if (iwl4965_is_rfkill(priv))
5674                 return;
5675
5676         ieee80211_start_queues(priv->hw);
5677
5678         priv->active_rate = priv->rates_mask;
5679         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5680
5681         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5682
5683         if (iwl4965_is_associated(priv)) {
5684                 struct iwl4965_rxon_cmd *active_rxon =
5685                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5686
5687                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5688                        sizeof(priv->staging_rxon));
5689                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5690         } else {
5691                 /* Initialize our rx_config data */
5692                 iwl4965_connection_init_rx_config(priv);
5693                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5694         }
5695
5696         /* Configure Bluetooth device coexistence support */
5697         iwl4965_send_bt_config(priv);
5698
5699         /* Configure the adapter for unassociated operation */
5700         iwl4965_commit_rxon(priv);
5701
5702         /* At this point, the NIC is initialized and operational */
5703         priv->notif_missed_beacons = 0;
5704         set_bit(STATUS_READY, &priv->status);
5705
5706         iwl4965_rf_kill_ct_config(priv);
5707
5708         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5709         wake_up_interruptible(&priv->wait_command_queue);
5710
5711         if (priv->error_recovering)
5712                 iwl4965_error_recovery(priv);
5713
5714         return;
5715
5716  restart:
5717         queue_work(priv->workqueue, &priv->restart);
5718 }
5719
5720 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5721
5722 static void __iwl4965_down(struct iwl_priv *priv)
5723 {
5724         unsigned long flags;
5725         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5726         struct ieee80211_conf *conf = NULL;
5727
5728         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5729
5730         conf = ieee80211_get_hw_conf(priv->hw);
5731
5732         if (!exit_pending)
5733                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5734
5735         iwlcore_clear_stations_table(priv);
5736
5737         /* Unblock any waiting calls */
5738         wake_up_interruptible_all(&priv->wait_command_queue);
5739
5740         /* Wipe out the EXIT_PENDING status bit if we are not actually
5741          * exiting the module */
5742         if (!exit_pending)
5743                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5744
5745         /* stop and reset the on-board processor */
5746         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5747
5748         /* tell the device to stop sending interrupts */
5749         iwl4965_disable_interrupts(priv);
5750
5751         if (priv->mac80211_registered)
5752                 ieee80211_stop_queues(priv->hw);
5753
5754         /* If we have not previously called iwl4965_init() then
5755          * clear all bits but the RF Kill and SUSPEND bits and return */
5756         if (!iwl4965_is_init(priv)) {
5757                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5758                                         STATUS_RF_KILL_HW |
5759                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5760                                         STATUS_RF_KILL_SW |
5761                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5762                                         STATUS_GEO_CONFIGURED |
5763                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5764                                         STATUS_IN_SUSPEND;
5765                 goto exit;
5766         }
5767
5768         /* ...otherwise clear out all the status bits but the RF Kill and
5769          * SUSPEND bits and continue taking the NIC down. */
5770         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5771                                 STATUS_RF_KILL_HW |
5772                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5773                                 STATUS_RF_KILL_SW |
5774                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5775                                 STATUS_GEO_CONFIGURED |
5776                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5777                                 STATUS_IN_SUSPEND |
5778                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5779                                 STATUS_FW_ERROR;
5780
5781         spin_lock_irqsave(&priv->lock, flags);
5782         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
5783                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5784         spin_unlock_irqrestore(&priv->lock, flags);
5785
5786         iwl4965_hw_txq_ctx_stop(priv);
5787         iwl4965_hw_rxq_stop(priv);
5788
5789         spin_lock_irqsave(&priv->lock, flags);
5790         if (!iwl4965_grab_nic_access(priv)) {
5791                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
5792                                          APMG_CLK_VAL_DMA_CLK_RQT);
5793                 iwl4965_release_nic_access(priv);
5794         }
5795         spin_unlock_irqrestore(&priv->lock, flags);
5796
5797         udelay(5);
5798
5799         iwl4965_hw_nic_stop_master(priv);
5800         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5801         iwl4965_hw_nic_reset(priv);
5802
5803  exit:
5804         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5805
5806         if (priv->ibss_beacon)
5807                 dev_kfree_skb(priv->ibss_beacon);
5808         priv->ibss_beacon = NULL;
5809
5810         /* clear out any free frames */
5811         iwl4965_clear_free_frames(priv);
5812 }
5813
5814 static void iwl4965_down(struct iwl_priv *priv)
5815 {
5816         mutex_lock(&priv->mutex);
5817         __iwl4965_down(priv);
5818         mutex_unlock(&priv->mutex);
5819
5820         iwl4965_cancel_deferred_work(priv);
5821 }
5822
5823 #define MAX_HW_RESTARTS 5
5824
5825 static int __iwl4965_up(struct iwl_priv *priv)
5826 {
5827         int rc, i;
5828
5829         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5830                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5831                 return -EIO;
5832         }
5833
5834         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5835                 IWL_WARNING("Radio disabled by SW RF kill (module "
5836                             "parameter)\n");
5837                 return -ENODEV;
5838         }
5839
5840         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5841                 IWL_ERROR("ucode not available for device bringup\n");
5842                 return -EIO;
5843         }
5844
5845         /* If platform's RF_KILL switch is NOT set to KILL */
5846         if (iwl4965_read32(priv, CSR_GP_CNTRL) &
5847                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5848                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5849         else {
5850                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5851                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5852                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5853                         return -ENODEV;
5854                 }
5855         }
5856
5857         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
5858
5859         rc = iwl4965_hw_nic_init(priv);
5860         if (rc) {
5861                 IWL_ERROR("Unable to int nic\n");
5862                 return rc;
5863         }
5864
5865         /* make sure rfkill handshake bits are cleared */
5866         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5867         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5868                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5869
5870         /* clear (again), then enable host interrupts */
5871         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
5872         iwl4965_enable_interrupts(priv);
5873
5874         /* really make sure rfkill handshake bits are cleared */
5875         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5876         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5877
5878         /* Copy original ucode data image from disk into backup cache.
5879          * This will be used to initialize the on-board processor's
5880          * data SRAM for a clean start when the runtime program first loads. */
5881         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5882                priv->ucode_data.len);
5883
5884         /* We return success when we resume from suspend and rf_kill is on. */
5885         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5886                 return 0;
5887
5888         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5889
5890                 iwlcore_clear_stations_table(priv);
5891
5892                 /* load bootstrap state machine,
5893                  * load bootstrap program into processor's memory,
5894                  * prepare to load the "initialize" uCode */
5895                 rc = iwl4965_load_bsm(priv);
5896
5897                 if (rc) {
5898                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5899                         continue;
5900                 }
5901
5902                 /* start card; "initialize" will load runtime ucode */
5903                 iwl4965_nic_start(priv);
5904
5905                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5906
5907                 return 0;
5908         }
5909
5910         set_bit(STATUS_EXIT_PENDING, &priv->status);
5911         __iwl4965_down(priv);
5912
5913         /* tried to restart and config the device for as long as our
5914          * patience could withstand */
5915         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5916         return -EIO;
5917 }
5918
5919
5920 /*****************************************************************************
5921  *
5922  * Workqueue callbacks
5923  *
5924  *****************************************************************************/
5925
5926 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5927 {
5928         struct iwl_priv *priv =
5929             container_of(data, struct iwl_priv, init_alive_start.work);
5930
5931         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5932                 return;
5933
5934         mutex_lock(&priv->mutex);
5935         iwl4965_init_alive_start(priv);
5936         mutex_unlock(&priv->mutex);
5937 }
5938
5939 static void iwl4965_bg_alive_start(struct work_struct *data)
5940 {
5941         struct iwl_priv *priv =
5942             container_of(data, struct iwl_priv, alive_start.work);
5943
5944         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5945                 return;
5946
5947         mutex_lock(&priv->mutex);
5948         iwl4965_alive_start(priv);
5949         mutex_unlock(&priv->mutex);
5950 }
5951
5952 static void iwl4965_bg_rf_kill(struct work_struct *work)
5953 {
5954         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5955
5956         wake_up_interruptible(&priv->wait_command_queue);
5957
5958         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5959                 return;
5960
5961         mutex_lock(&priv->mutex);
5962
5963         if (!iwl4965_is_rfkill(priv)) {
5964                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5965                           "HW and/or SW RF Kill no longer active, restarting "
5966                           "device\n");
5967                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5968                         queue_work(priv->workqueue, &priv->restart);
5969         } else {
5970
5971                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5972                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5973                                           "disabled by SW switch\n");
5974                 else
5975                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5976                                     "Kill switch must be turned off for "
5977                                     "wireless networking to work.\n");
5978         }
5979         mutex_unlock(&priv->mutex);
5980 }
5981
5982 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5983
5984 static void iwl4965_bg_scan_check(struct work_struct *data)
5985 {
5986         struct iwl_priv *priv =
5987             container_of(data, struct iwl_priv, scan_check.work);
5988
5989         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5990                 return;
5991
5992         mutex_lock(&priv->mutex);
5993         if (test_bit(STATUS_SCANNING, &priv->status) ||
5994             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5995                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5996                           "Scan completion watchdog resetting adapter (%dms)\n",
5997                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5998
5999                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6000                         iwl4965_send_scan_abort(priv);
6001         }
6002         mutex_unlock(&priv->mutex);
6003 }
6004
6005 static void iwl4965_bg_request_scan(struct work_struct *data)
6006 {
6007         struct iwl_priv *priv =
6008             container_of(data, struct iwl_priv, request_scan);
6009         struct iwl_host_cmd cmd = {
6010                 .id = REPLY_SCAN_CMD,
6011                 .len = sizeof(struct iwl4965_scan_cmd),
6012                 .meta.flags = CMD_SIZE_HUGE,
6013         };
6014         struct iwl4965_scan_cmd *scan;
6015         struct ieee80211_conf *conf = NULL;
6016         u16 cmd_len;
6017         enum ieee80211_band band;
6018         u8 direct_mask;
6019         int ret = 0;
6020
6021         conf = ieee80211_get_hw_conf(priv->hw);
6022
6023         mutex_lock(&priv->mutex);
6024
6025         if (!iwl4965_is_ready(priv)) {
6026                 IWL_WARNING("request scan called when driver not ready.\n");
6027                 goto done;
6028         }
6029
6030         /* Make sure the scan wasn't cancelled before this queued work
6031          * was given the chance to run... */
6032         if (!test_bit(STATUS_SCANNING, &priv->status))
6033                 goto done;
6034
6035         /* This should never be called or scheduled if there is currently
6036          * a scan active in the hardware. */
6037         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6038                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6039                                "Ignoring second request.\n");
6040                 ret = -EIO;
6041                 goto done;
6042         }
6043
6044         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6045                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6046                 goto done;
6047         }
6048
6049         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6050                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6051                 goto done;
6052         }
6053
6054         if (iwl4965_is_rfkill(priv)) {
6055                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6056                 goto done;
6057         }
6058
6059         if (!test_bit(STATUS_READY, &priv->status)) {
6060                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6061                 goto done;
6062         }
6063
6064         if (!priv->scan_bands) {
6065                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6066                 goto done;
6067         }
6068
6069         if (!priv->scan) {
6070                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6071                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6072                 if (!priv->scan) {
6073                         ret = -ENOMEM;
6074                         goto done;
6075                 }
6076         }
6077         scan = priv->scan;
6078         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6079
6080         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6081         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6082
6083         if (iwl4965_is_associated(priv)) {
6084                 u16 interval = 0;
6085                 u32 extra;
6086                 u32 suspend_time = 100;
6087                 u32 scan_suspend_time = 100;
6088                 unsigned long flags;
6089
6090                 IWL_DEBUG_INFO("Scanning while associated...\n");
6091
6092                 spin_lock_irqsave(&priv->lock, flags);
6093                 interval = priv->beacon_int;
6094                 spin_unlock_irqrestore(&priv->lock, flags);
6095
6096                 scan->suspend_time = 0;
6097                 scan->max_out_time = cpu_to_le32(200 * 1024);
6098                 if (!interval)
6099                         interval = suspend_time;
6100
6101                 extra = (suspend_time / interval) << 22;
6102                 scan_suspend_time = (extra |
6103                     ((suspend_time % interval) * 1024));
6104                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6105                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6106                                scan_suspend_time, interval);
6107         }
6108
6109         /* We should add the ability for user to lock to PASSIVE ONLY */
6110         if (priv->one_direct_scan) {
6111                 IWL_DEBUG_SCAN
6112                     ("Kicking off one direct scan for '%s'\n",
6113                      iwl4965_escape_essid(priv->direct_ssid,
6114                                       priv->direct_ssid_len));
6115                 scan->direct_scan[0].id = WLAN_EID_SSID;
6116                 scan->direct_scan[0].len = priv->direct_ssid_len;
6117                 memcpy(scan->direct_scan[0].ssid,
6118                        priv->direct_ssid, priv->direct_ssid_len);
6119                 direct_mask = 1;
6120         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6121                 scan->direct_scan[0].id = WLAN_EID_SSID;
6122                 scan->direct_scan[0].len = priv->essid_len;
6123                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6124                 direct_mask = 1;
6125         } else {
6126                 direct_mask = 0;
6127         }
6128
6129         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6130         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6131         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6132
6133
6134         switch (priv->scan_bands) {
6135         case 2:
6136                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6137                 scan->tx_cmd.rate_n_flags =
6138                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6139                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6140
6141                 scan->good_CRC_th = 0;
6142                 band = IEEE80211_BAND_2GHZ;
6143                 break;
6144
6145         case 1:
6146                 scan->tx_cmd.rate_n_flags =
6147                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6148                                 RATE_MCS_ANT_B_MSK);
6149                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6150                 band = IEEE80211_BAND_5GHZ;
6151                 break;
6152
6153         default:
6154                 IWL_WARNING("Invalid scan band count\n");
6155                 goto done;
6156         }
6157
6158         /* We don't build a direct scan probe request; the uCode will do
6159          * that based on the direct_mask added to each channel entry */
6160         cmd_len = iwl4965_fill_probe_req(priv, band,
6161                                         (struct ieee80211_mgmt *)scan->data,
6162                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6163
6164         scan->tx_cmd.len = cpu_to_le16(cmd_len);
6165         /* select Rx chains */
6166
6167         /* Force use of chains B and C (0x6) for scan Rx.
6168          * Avoid A (0x1) because of its off-channel reception on A-band.
6169          * MIMO is not used here, but value is required to make uCode happy. */
6170         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6171                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6172                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6173                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6174
6175         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6176                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6177
6178         if (direct_mask) {
6179                 IWL_DEBUG_SCAN
6180                     ("Initiating direct scan for %s.\n",
6181                      iwl4965_escape_essid(priv->essid, priv->essid_len));
6182                 scan->channel_count =
6183                         iwl4965_get_channels_for_scan(
6184                                 priv, band, 1, /* active */
6185                                 direct_mask,
6186                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6187         } else {
6188                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6189                 scan->channel_count =
6190                         iwl4965_get_channels_for_scan(
6191                                 priv, band, 0, /* passive */
6192                                 direct_mask,
6193                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6194         }
6195
6196         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6197             scan->channel_count * sizeof(struct iwl4965_scan_channel);
6198         cmd.data = scan;
6199         scan->len = cpu_to_le16(cmd.len);
6200
6201         set_bit(STATUS_SCAN_HW, &priv->status);
6202         ret = iwl_send_cmd_sync(priv, &cmd);
6203         if (ret)
6204                 goto done;
6205
6206         queue_delayed_work(priv->workqueue, &priv->scan_check,
6207                            IWL_SCAN_CHECK_WATCHDOG);
6208
6209         mutex_unlock(&priv->mutex);
6210         return;
6211
6212  done:
6213         /* inform mac80211 scan aborted */
6214         queue_work(priv->workqueue, &priv->scan_completed);
6215         mutex_unlock(&priv->mutex);
6216 }
6217
6218 static void iwl4965_bg_up(struct work_struct *data)
6219 {
6220         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6221
6222         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6223                 return;
6224
6225         mutex_lock(&priv->mutex);
6226         __iwl4965_up(priv);
6227         mutex_unlock(&priv->mutex);
6228 }
6229
6230 static void iwl4965_bg_restart(struct work_struct *data)
6231 {
6232         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6233
6234         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6235                 return;
6236
6237         iwl4965_down(priv);
6238         queue_work(priv->workqueue, &priv->up);
6239 }
6240
6241 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6242 {
6243         struct iwl_priv *priv =
6244             container_of(data, struct iwl_priv, rx_replenish);
6245
6246         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6247                 return;
6248
6249         mutex_lock(&priv->mutex);
6250         iwl4965_rx_replenish(priv);
6251         mutex_unlock(&priv->mutex);
6252 }
6253
6254 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6255
6256 static void iwl4965_bg_post_associate(struct work_struct *data)
6257 {
6258         struct iwl_priv *priv = container_of(data, struct iwl_priv,
6259                                              post_associate.work);
6260         struct ieee80211_conf *conf = NULL;
6261         int ret = 0;
6262         DECLARE_MAC_BUF(mac);
6263
6264         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6265                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6266                 return;
6267         }
6268
6269         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6270                         priv->assoc_id,
6271                         print_mac(mac, priv->active_rxon.bssid_addr));
6272
6273
6274         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6275                 return;
6276
6277         mutex_lock(&priv->mutex);
6278
6279         if (!priv->vif || !priv->is_open) {
6280                 mutex_unlock(&priv->mutex);
6281                 return;
6282         }
6283         iwl4965_scan_cancel_timeout(priv, 200);
6284
6285         conf = ieee80211_get_hw_conf(priv->hw);
6286
6287         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6288         iwl4965_commit_rxon(priv);
6289
6290         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6291         iwl4965_setup_rxon_timing(priv);
6292         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6293                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6294         if (ret)
6295                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6296                             "Attempting to continue.\n");
6297
6298         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6299
6300 #ifdef CONFIG_IWL4965_HT
6301         if (priv->current_ht_config.is_ht)
6302                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6303 #endif /* CONFIG_IWL4965_HT*/
6304         iwl4965_set_rxon_chain(priv);
6305         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6306
6307         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6308                         priv->assoc_id, priv->beacon_int);
6309
6310         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6311                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6312         else
6313                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6314
6315         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6316                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6317                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6318                 else
6319                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6320
6321                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6322                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6323
6324         }
6325
6326         iwl4965_commit_rxon(priv);
6327
6328         switch (priv->iw_mode) {
6329         case IEEE80211_IF_TYPE_STA:
6330                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6331                 break;
6332
6333         case IEEE80211_IF_TYPE_IBSS:
6334
6335                 /* clear out the station table */
6336                 iwlcore_clear_stations_table(priv);
6337
6338                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6339                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6340                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6341                 iwl4965_send_beacon_cmd(priv);
6342
6343                 break;
6344
6345         default:
6346                 IWL_ERROR("%s Should not be called in %d mode\n",
6347                                 __FUNCTION__, priv->iw_mode);
6348                 break;
6349         }
6350
6351         iwl4965_sequence_reset(priv);
6352
6353 #ifdef CONFIG_IWL4965_SENSITIVITY
6354         /* Enable Rx differential gain and sensitivity calibrations */
6355         iwl4965_chain_noise_reset(priv);
6356         priv->start_calib = 1;
6357 #endif /* CONFIG_IWL4965_SENSITIVITY */
6358
6359         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6360                 priv->assoc_station_added = 1;
6361
6362         iwl4965_activate_qos(priv, 0);
6363
6364         /* we have just associated, don't start scan too early */
6365         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6366         mutex_unlock(&priv->mutex);
6367 }
6368
6369 static void iwl4965_bg_abort_scan(struct work_struct *work)
6370 {
6371         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6372
6373         if (!iwl4965_is_ready(priv))
6374                 return;
6375
6376         mutex_lock(&priv->mutex);
6377
6378         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6379         iwl4965_send_scan_abort(priv);
6380
6381         mutex_unlock(&priv->mutex);
6382 }
6383
6384 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6385
6386 static void iwl4965_bg_scan_completed(struct work_struct *work)
6387 {
6388         struct iwl_priv *priv =
6389             container_of(work, struct iwl_priv, scan_completed);
6390
6391         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6392
6393         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6394                 return;
6395
6396         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6397                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6398
6399         ieee80211_scan_completed(priv->hw);
6400
6401         /* Since setting the TXPOWER may have been deferred while
6402          * performing the scan, fire one off */
6403         mutex_lock(&priv->mutex);
6404         iwl4965_hw_reg_send_txpower(priv);
6405         mutex_unlock(&priv->mutex);
6406 }
6407
6408 /*****************************************************************************
6409  *
6410  * mac80211 entry point functions
6411  *
6412  *****************************************************************************/
6413
6414 #define UCODE_READY_TIMEOUT     (2 * HZ)
6415
6416 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6417 {
6418         struct iwl_priv *priv = hw->priv;
6419         int ret;
6420
6421         IWL_DEBUG_MAC80211("enter\n");
6422
6423         if (pci_enable_device(priv->pci_dev)) {
6424                 IWL_ERROR("Fail to pci_enable_device\n");
6425                 return -ENODEV;
6426         }
6427         pci_restore_state(priv->pci_dev);
6428         pci_enable_msi(priv->pci_dev);
6429
6430         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6431                           DRV_NAME, priv);
6432         if (ret) {
6433                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6434                 goto out_disable_msi;
6435         }
6436
6437         /* we should be verifying the device is ready to be opened */
6438         mutex_lock(&priv->mutex);
6439
6440         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6441         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6442          * ucode filename and max sizes are card-specific. */
6443
6444         if (!priv->ucode_code.len) {
6445                 ret = iwl4965_read_ucode(priv);
6446                 if (ret) {
6447                         IWL_ERROR("Could not read microcode: %d\n", ret);
6448                         mutex_unlock(&priv->mutex);
6449                         goto out_release_irq;
6450                 }
6451         }
6452
6453         ret = __iwl4965_up(priv);
6454
6455         mutex_unlock(&priv->mutex);
6456
6457         if (ret)
6458                 goto out_release_irq;
6459
6460         IWL_DEBUG_INFO("Start UP work done.\n");
6461
6462         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6463                 return 0;
6464
6465         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6466          * mac80211 will not be run successfully. */
6467         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6468                         test_bit(STATUS_READY, &priv->status),
6469                         UCODE_READY_TIMEOUT);
6470         if (!ret) {
6471                 if (!test_bit(STATUS_READY, &priv->status)) {
6472                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6473                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6474                         ret = -ETIMEDOUT;
6475                         goto out_release_irq;
6476                 }
6477         }
6478
6479         priv->is_open = 1;
6480         IWL_DEBUG_MAC80211("leave\n");
6481         return 0;
6482
6483 out_release_irq:
6484         free_irq(priv->pci_dev->irq, priv);
6485 out_disable_msi:
6486         pci_disable_msi(priv->pci_dev);
6487         pci_disable_device(priv->pci_dev);
6488         priv->is_open = 0;
6489         IWL_DEBUG_MAC80211("leave - failed\n");
6490         return ret;
6491 }
6492
6493 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6494 {
6495         struct iwl_priv *priv = hw->priv;
6496
6497         IWL_DEBUG_MAC80211("enter\n");
6498
6499         if (!priv->is_open) {
6500                 IWL_DEBUG_MAC80211("leave - skip\n");
6501                 return;
6502         }
6503
6504         priv->is_open = 0;
6505
6506         if (iwl4965_is_ready_rf(priv)) {
6507                 /* stop mac, cancel any scan request and clear
6508                  * RXON_FILTER_ASSOC_MSK BIT
6509                  */
6510                 mutex_lock(&priv->mutex);
6511                 iwl4965_scan_cancel_timeout(priv, 100);
6512                 cancel_delayed_work(&priv->post_associate);
6513                 mutex_unlock(&priv->mutex);
6514         }
6515
6516         iwl4965_down(priv);
6517
6518         flush_workqueue(priv->workqueue);
6519         free_irq(priv->pci_dev->irq, priv);
6520         pci_disable_msi(priv->pci_dev);
6521         pci_save_state(priv->pci_dev);
6522         pci_disable_device(priv->pci_dev);
6523
6524         IWL_DEBUG_MAC80211("leave\n");
6525 }
6526
6527 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6528                       struct ieee80211_tx_control *ctl)
6529 {
6530         struct iwl_priv *priv = hw->priv;
6531
6532         IWL_DEBUG_MAC80211("enter\n");
6533
6534         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6535                 IWL_DEBUG_MAC80211("leave - monitor\n");
6536                 return -1;
6537         }
6538
6539         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6540                      ctl->tx_rate->bitrate);
6541
6542         if (iwl4965_tx_skb(priv, skb, ctl))
6543                 dev_kfree_skb_any(skb);
6544
6545         IWL_DEBUG_MAC80211("leave\n");
6546         return 0;
6547 }
6548
6549 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6550                                  struct ieee80211_if_init_conf *conf)
6551 {
6552         struct iwl_priv *priv = hw->priv;
6553         unsigned long flags;
6554         DECLARE_MAC_BUF(mac);
6555
6556         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6557
6558         if (priv->vif) {
6559                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6560                 return -EOPNOTSUPP;
6561         }
6562
6563         spin_lock_irqsave(&priv->lock, flags);
6564         priv->vif = conf->vif;
6565
6566         spin_unlock_irqrestore(&priv->lock, flags);
6567
6568         mutex_lock(&priv->mutex);
6569
6570         if (conf->mac_addr) {
6571                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6572                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6573         }
6574
6575         if (iwl4965_is_ready(priv))
6576                 iwl4965_set_mode(priv, conf->type);
6577
6578         mutex_unlock(&priv->mutex);
6579
6580         IWL_DEBUG_MAC80211("leave\n");
6581         return 0;
6582 }
6583
6584 /**
6585  * iwl4965_mac_config - mac80211 config callback
6586  *
6587  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6588  * be set inappropriately and the driver currently sets the hardware up to
6589  * use it whenever needed.
6590  */
6591 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6592 {
6593         struct iwl_priv *priv = hw->priv;
6594         const struct iwl_channel_info *ch_info;
6595         unsigned long flags;
6596         int ret = 0;
6597
6598         mutex_lock(&priv->mutex);
6599         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6600
6601         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6602
6603         if (!iwl4965_is_ready(priv)) {
6604                 IWL_DEBUG_MAC80211("leave - not ready\n");
6605                 ret = -EIO;
6606                 goto out;
6607         }
6608
6609         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
6610                      test_bit(STATUS_SCANNING, &priv->status))) {
6611                 IWL_DEBUG_MAC80211("leave - scanning\n");
6612                 set_bit(STATUS_CONF_PENDING, &priv->status);
6613                 mutex_unlock(&priv->mutex);
6614                 return 0;
6615         }
6616
6617         spin_lock_irqsave(&priv->lock, flags);
6618
6619         ch_info = iwl_get_channel_info(priv, conf->channel->band,
6620                         ieee80211_frequency_to_channel(conf->channel->center_freq));
6621         if (!is_channel_valid(ch_info)) {
6622                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6623                 spin_unlock_irqrestore(&priv->lock, flags);
6624                 ret = -EINVAL;
6625                 goto out;
6626         }
6627
6628 #ifdef CONFIG_IWL4965_HT
6629         /* if we are switching from ht to 2.4 clear flags
6630          * from any ht related info since 2.4 does not
6631          * support ht */
6632         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6633 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6634             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6635 #endif
6636         )
6637                 priv->staging_rxon.flags = 0;
6638 #endif /* CONFIG_IWL4965_HT */
6639
6640         iwlcore_set_rxon_channel(priv, conf->channel->band,
6641                 ieee80211_frequency_to_channel(conf->channel->center_freq));
6642
6643         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6644
6645         /* The list of supported rates and rate mask can be different
6646          * for each band; since the band may have changed, reset
6647          * the rate mask to what mac80211 lists */
6648         iwl4965_set_rate(priv);
6649
6650         spin_unlock_irqrestore(&priv->lock, flags);
6651
6652 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6653         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6654                 iwl4965_hw_channel_switch(priv, conf->channel);
6655                 goto out;
6656         }
6657 #endif
6658
6659         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
6660
6661         if (!conf->radio_enabled) {
6662                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6663                 goto out;
6664         }
6665
6666         if (iwl4965_is_rfkill(priv)) {
6667                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6668                 ret = -EIO;
6669                 goto out;
6670         }
6671
6672         iwl4965_set_rate(priv);
6673
6674         if (memcmp(&priv->active_rxon,
6675                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6676                 iwl4965_commit_rxon(priv);
6677         else
6678                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6679
6680         IWL_DEBUG_MAC80211("leave\n");
6681
6682 out:
6683         clear_bit(STATUS_CONF_PENDING, &priv->status);
6684         mutex_unlock(&priv->mutex);
6685         return ret;
6686 }
6687
6688 static void iwl4965_config_ap(struct iwl_priv *priv)
6689 {
6690         int ret = 0;
6691
6692         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6693                 return;
6694
6695         /* The following should be done only at AP bring up */
6696         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6697
6698                 /* RXON - unassoc (to set timing command) */
6699                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6700                 iwl4965_commit_rxon(priv);
6701
6702                 /* RXON Timing */
6703                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6704                 iwl4965_setup_rxon_timing(priv);
6705                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6706                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6707                 if (ret)
6708                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6709                                         "Attempting to continue.\n");
6710
6711                 iwl4965_set_rxon_chain(priv);
6712
6713                 /* FIXME: what should be the assoc_id for AP? */
6714                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6715                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6716                         priv->staging_rxon.flags |=
6717                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6718                 else
6719                         priv->staging_rxon.flags &=
6720                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6721
6722                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6723                         if (priv->assoc_capability &
6724                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6725                                 priv->staging_rxon.flags |=
6726                                         RXON_FLG_SHORT_SLOT_MSK;
6727                         else
6728                                 priv->staging_rxon.flags &=
6729                                         ~RXON_FLG_SHORT_SLOT_MSK;
6730
6731                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6732                                 priv->staging_rxon.flags &=
6733                                         ~RXON_FLG_SHORT_SLOT_MSK;
6734                 }
6735                 /* restore RXON assoc */
6736                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6737                 iwl4965_commit_rxon(priv);
6738                 iwl4965_activate_qos(priv, 1);
6739                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6740         }
6741         iwl4965_send_beacon_cmd(priv);
6742
6743         /* FIXME - we need to add code here to detect a totally new
6744          * configuration, reset the AP, unassoc, rxon timing, assoc,
6745          * clear sta table, add BCAST sta... */
6746 }
6747
6748 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6749                                         struct ieee80211_vif *vif,
6750                                     struct ieee80211_if_conf *conf)
6751 {
6752         struct iwl_priv *priv = hw->priv;
6753         DECLARE_MAC_BUF(mac);
6754         unsigned long flags;
6755         int rc;
6756
6757         if (conf == NULL)
6758                 return -EIO;
6759
6760         if (priv->vif != vif) {
6761                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6762                 mutex_unlock(&priv->mutex);
6763                 return 0;
6764         }
6765
6766         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6767             (!conf->beacon || !conf->ssid_len)) {
6768                 IWL_DEBUG_MAC80211
6769                     ("Leaving in AP mode because HostAPD is not ready.\n");
6770                 return 0;
6771         }
6772
6773         if (!iwl4965_is_alive(priv))
6774                 return -EAGAIN;
6775
6776         mutex_lock(&priv->mutex);
6777
6778         if (conf->bssid)
6779                 IWL_DEBUG_MAC80211("bssid: %s\n",
6780                                    print_mac(mac, conf->bssid));
6781
6782 /*
6783  * very dubious code was here; the probe filtering flag is never set:
6784  *
6785         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6786             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6787  */
6788
6789         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6790                 if (!conf->bssid) {
6791                         conf->bssid = priv->mac_addr;
6792                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6793                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6794                                            print_mac(mac, conf->bssid));
6795                 }
6796                 if (priv->ibss_beacon)
6797                         dev_kfree_skb(priv->ibss_beacon);
6798
6799                 priv->ibss_beacon = conf->beacon;
6800         }
6801
6802         if (iwl4965_is_rfkill(priv))
6803                 goto done;
6804
6805         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6806             !is_multicast_ether_addr(conf->bssid)) {
6807                 /* If there is currently a HW scan going on in the background
6808                  * then we need to cancel it else the RXON below will fail. */
6809                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6810                         IWL_WARNING("Aborted scan still in progress "
6811                                     "after 100ms\n");
6812                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6813                         mutex_unlock(&priv->mutex);
6814                         return -EAGAIN;
6815                 }
6816                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6817
6818                 /* TODO: Audit driver for usage of these members and see
6819                  * if mac80211 deprecates them (priv->bssid looks like it
6820                  * shouldn't be there, but I haven't scanned the IBSS code
6821                  * to verify) - jpk */
6822                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6823
6824                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6825                         iwl4965_config_ap(priv);
6826                 else {
6827                         rc = iwl4965_commit_rxon(priv);
6828                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6829                                 iwl4965_rxon_add_station(
6830                                         priv, priv->active_rxon.bssid_addr, 1);
6831                 }
6832
6833         } else {
6834                 iwl4965_scan_cancel_timeout(priv, 100);
6835                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6836                 iwl4965_commit_rxon(priv);
6837         }
6838
6839  done:
6840         spin_lock_irqsave(&priv->lock, flags);
6841         if (!conf->ssid_len)
6842                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6843         else
6844                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6845
6846         priv->essid_len = conf->ssid_len;
6847         spin_unlock_irqrestore(&priv->lock, flags);
6848
6849         IWL_DEBUG_MAC80211("leave\n");
6850         mutex_unlock(&priv->mutex);
6851
6852         return 0;
6853 }
6854
6855 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6856                                  unsigned int changed_flags,
6857                                  unsigned int *total_flags,
6858                                  int mc_count, struct dev_addr_list *mc_list)
6859 {
6860         /*
6861          * XXX: dummy
6862          * see also iwl4965_connection_init_rx_config
6863          */
6864         *total_flags = 0;
6865 }
6866
6867 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6868                                      struct ieee80211_if_init_conf *conf)
6869 {
6870         struct iwl_priv *priv = hw->priv;
6871
6872         IWL_DEBUG_MAC80211("enter\n");
6873
6874         mutex_lock(&priv->mutex);
6875
6876         if (iwl4965_is_ready_rf(priv)) {
6877                 iwl4965_scan_cancel_timeout(priv, 100);
6878                 cancel_delayed_work(&priv->post_associate);
6879                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6880                 iwl4965_commit_rxon(priv);
6881         }
6882         if (priv->vif == conf->vif) {
6883                 priv->vif = NULL;
6884                 memset(priv->bssid, 0, ETH_ALEN);
6885                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6886                 priv->essid_len = 0;
6887         }
6888         mutex_unlock(&priv->mutex);
6889
6890         IWL_DEBUG_MAC80211("leave\n");
6891
6892 }
6893
6894 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6895                                      struct ieee80211_vif *vif,
6896                                      struct ieee80211_bss_conf *bss_conf,
6897                                      u32 changes)
6898 {
6899         struct iwl_priv *priv = hw->priv;
6900
6901         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6902                 if (bss_conf->use_short_preamble)
6903                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6904                 else
6905                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6906         }
6907
6908         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6909                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6910                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6911                 else
6912                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6913         }
6914
6915         if (changes & BSS_CHANGED_ASSOC) {
6916                 /*
6917                  * TODO:
6918                  * do stuff instead of sniffing assoc resp
6919                  */
6920         }
6921
6922         if (iwl4965_is_associated(priv))
6923                 iwl4965_send_rxon_assoc(priv);
6924 }
6925
6926 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6927 {
6928         int rc = 0;
6929         unsigned long flags;
6930         struct iwl_priv *priv = hw->priv;
6931
6932         IWL_DEBUG_MAC80211("enter\n");
6933
6934         mutex_lock(&priv->mutex);
6935         spin_lock_irqsave(&priv->lock, flags);
6936
6937         if (!iwl4965_is_ready_rf(priv)) {
6938                 rc = -EIO;
6939                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6940                 goto out_unlock;
6941         }
6942
6943         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
6944                 rc = -EIO;
6945                 IWL_ERROR("ERROR: APs don't scan\n");
6946                 goto out_unlock;
6947         }
6948
6949         /* we don't schedule scan within next_scan_jiffies period */
6950         if (priv->next_scan_jiffies &&
6951                         time_after(priv->next_scan_jiffies, jiffies)) {
6952                 rc = -EAGAIN;
6953                 goto out_unlock;
6954         }
6955         /* if we just finished scan ask for delay */
6956         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6957                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
6958                 rc = -EAGAIN;
6959                 goto out_unlock;
6960         }
6961         if (len) {
6962                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6963                                iwl4965_escape_essid(ssid, len), (int)len);
6964
6965                 priv->one_direct_scan = 1;
6966                 priv->direct_ssid_len = (u8)
6967                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6968                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6969         } else
6970                 priv->one_direct_scan = 0;
6971
6972         rc = iwl4965_scan_initiate(priv);
6973
6974         IWL_DEBUG_MAC80211("leave\n");
6975
6976 out_unlock:
6977         spin_unlock_irqrestore(&priv->lock, flags);
6978         mutex_unlock(&priv->mutex);
6979
6980         return rc;
6981 }
6982
6983 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
6984                         struct ieee80211_key_conf *keyconf, const u8 *addr,
6985                         u32 iv32, u16 *phase1key)
6986 {
6987         struct iwl_priv *priv = hw->priv;
6988         u8 sta_id = IWL_INVALID_STATION;
6989         unsigned long flags;
6990         __le16 key_flags = 0;
6991         int i;
6992         DECLARE_MAC_BUF(mac);
6993
6994         IWL_DEBUG_MAC80211("enter\n");
6995
6996         sta_id = iwl4965_hw_find_station(priv, addr);
6997         if (sta_id == IWL_INVALID_STATION) {
6998                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6999                                    print_mac(mac, addr));
7000                 return;
7001         }
7002
7003         iwl4965_scan_cancel_timeout(priv, 100);
7004
7005         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
7006         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
7007         key_flags &= ~STA_KEY_FLG_INVALID;
7008
7009         if (sta_id == priv->hw_setting.bcast_sta_id)
7010                 key_flags |= STA_KEY_MULTICAST_MSK;
7011
7012         spin_lock_irqsave(&priv->sta_lock, flags);
7013
7014         priv->stations[sta_id].sta.key.key_offset =
7015                                         (sta_id % STA_KEY_MAX_NUM);/* FIXME */
7016         priv->stations[sta_id].sta.key.key_flags = key_flags;
7017         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
7018
7019         for (i = 0; i < 5; i++)
7020                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
7021                         cpu_to_le16(phase1key[i]);
7022
7023         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
7024         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
7025
7026         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
7027
7028         spin_unlock_irqrestore(&priv->sta_lock, flags);
7029
7030         IWL_DEBUG_MAC80211("leave\n");
7031 }
7032
7033 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7034                            const u8 *local_addr, const u8 *addr,
7035                            struct ieee80211_key_conf *key)
7036 {
7037         struct iwl_priv *priv = hw->priv;
7038         DECLARE_MAC_BUF(mac);
7039         int ret = 0;
7040         u8 sta_id = IWL_INVALID_STATION;
7041         u8 static_key;
7042
7043         IWL_DEBUG_MAC80211("enter\n");
7044
7045         if (!priv->cfg->mod_params->hw_crypto) {
7046                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7047                 return -EOPNOTSUPP;
7048         }
7049
7050         if (is_zero_ether_addr(addr))
7051                 /* only support pairwise keys */
7052                 return -EOPNOTSUPP;
7053
7054         /* FIXME: need to differenciate between static and dynamic key
7055          * in the level of mac80211 */
7056         static_key = !iwl4965_is_associated(priv);
7057
7058         if (!static_key) {
7059                 sta_id = iwl4965_hw_find_station(priv, addr);
7060                 if (sta_id == IWL_INVALID_STATION) {
7061                         IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7062                                            print_mac(mac, addr));
7063                         return -EINVAL;
7064                 }
7065         }
7066
7067         iwl4965_scan_cancel_timeout(priv, 100);
7068
7069         switch (cmd) {
7070         case SET_KEY:
7071                 if (static_key)
7072                         ret = iwl4965_set_static_key(priv, key);
7073                 else
7074                         ret = iwl4965_set_dynamic_key(priv, key, sta_id);
7075
7076                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
7077                 break;
7078         case DISABLE_KEY:
7079                 if (static_key)
7080                         ret = iwl4965_remove_static_key(priv);
7081                 else
7082                         ret = iwl4965_clear_sta_key_info(priv, sta_id);
7083
7084                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7085                 break;
7086         default:
7087                 ret = -EINVAL;
7088         }
7089
7090         IWL_DEBUG_MAC80211("leave\n");
7091
7092         return ret;
7093 }
7094
7095 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7096                            const struct ieee80211_tx_queue_params *params)
7097 {
7098         struct iwl_priv *priv = hw->priv;
7099         unsigned long flags;
7100         int q;
7101
7102         IWL_DEBUG_MAC80211("enter\n");
7103
7104         if (!iwl4965_is_ready_rf(priv)) {
7105                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7106                 return -EIO;
7107         }
7108
7109         if (queue >= AC_NUM) {
7110                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7111                 return 0;
7112         }
7113
7114         if (!priv->qos_data.qos_enable) {
7115                 priv->qos_data.qos_active = 0;
7116                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7117                 return 0;
7118         }
7119         q = AC_NUM - 1 - queue;
7120
7121         spin_lock_irqsave(&priv->lock, flags);
7122
7123         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7124         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7125         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7126         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7127                         cpu_to_le16((params->txop * 32));
7128
7129         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7130         priv->qos_data.qos_active = 1;
7131
7132         spin_unlock_irqrestore(&priv->lock, flags);
7133
7134         mutex_lock(&priv->mutex);
7135         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7136                 iwl4965_activate_qos(priv, 1);
7137         else if (priv->assoc_id && iwl4965_is_associated(priv))
7138                 iwl4965_activate_qos(priv, 0);
7139
7140         mutex_unlock(&priv->mutex);
7141
7142         IWL_DEBUG_MAC80211("leave\n");
7143         return 0;
7144 }
7145
7146 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7147                                 struct ieee80211_tx_queue_stats *stats)
7148 {
7149         struct iwl_priv *priv = hw->priv;
7150         int i, avail;
7151         struct iwl4965_tx_queue *txq;
7152         struct iwl4965_queue *q;
7153         unsigned long flags;
7154
7155         IWL_DEBUG_MAC80211("enter\n");
7156
7157         if (!iwl4965_is_ready_rf(priv)) {
7158                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7159                 return -EIO;
7160         }
7161
7162         spin_lock_irqsave(&priv->lock, flags);
7163
7164         for (i = 0; i < AC_NUM; i++) {
7165                 txq = &priv->txq[i];
7166                 q = &txq->q;
7167                 avail = iwl4965_queue_space(q);
7168
7169                 stats->data[i].len = q->n_window - avail;
7170                 stats->data[i].limit = q->n_window - q->high_mark;
7171                 stats->data[i].count = q->n_window;
7172
7173         }
7174         spin_unlock_irqrestore(&priv->lock, flags);
7175
7176         IWL_DEBUG_MAC80211("leave\n");
7177
7178         return 0;
7179 }
7180
7181 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7182                              struct ieee80211_low_level_stats *stats)
7183 {
7184         IWL_DEBUG_MAC80211("enter\n");
7185         IWL_DEBUG_MAC80211("leave\n");
7186
7187         return 0;
7188 }
7189
7190 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7191 {
7192         IWL_DEBUG_MAC80211("enter\n");
7193         IWL_DEBUG_MAC80211("leave\n");
7194
7195         return 0;
7196 }
7197
7198 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7199 {
7200         struct iwl_priv *priv = hw->priv;
7201         unsigned long flags;
7202
7203         mutex_lock(&priv->mutex);
7204         IWL_DEBUG_MAC80211("enter\n");
7205
7206         priv->lq_mngr.lq_ready = 0;
7207 #ifdef CONFIG_IWL4965_HT
7208         spin_lock_irqsave(&priv->lock, flags);
7209         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7210         spin_unlock_irqrestore(&priv->lock, flags);
7211 #endif /* CONFIG_IWL4965_HT */
7212
7213         iwlcore_reset_qos(priv);
7214
7215         cancel_delayed_work(&priv->post_associate);
7216
7217         spin_lock_irqsave(&priv->lock, flags);
7218         priv->assoc_id = 0;
7219         priv->assoc_capability = 0;
7220         priv->call_post_assoc_from_beacon = 0;
7221         priv->assoc_station_added = 0;
7222
7223         /* new association get rid of ibss beacon skb */
7224         if (priv->ibss_beacon)
7225                 dev_kfree_skb(priv->ibss_beacon);
7226
7227         priv->ibss_beacon = NULL;
7228
7229         priv->beacon_int = priv->hw->conf.beacon_int;
7230         priv->timestamp1 = 0;
7231         priv->timestamp0 = 0;
7232         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7233                 priv->beacon_int = 0;
7234
7235         spin_unlock_irqrestore(&priv->lock, flags);
7236
7237         if (!iwl4965_is_ready_rf(priv)) {
7238                 IWL_DEBUG_MAC80211("leave - not ready\n");
7239                 mutex_unlock(&priv->mutex);
7240                 return;
7241         }
7242
7243         /* we are restarting association process
7244          * clear RXON_FILTER_ASSOC_MSK bit
7245          */
7246         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7247                 iwl4965_scan_cancel_timeout(priv, 100);
7248                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7249                 iwl4965_commit_rxon(priv);
7250         }
7251
7252         /* Per mac80211.h: This is only used in IBSS mode... */
7253         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7254
7255                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7256                 mutex_unlock(&priv->mutex);
7257                 return;
7258         }
7259
7260         priv->only_active_channel = 0;
7261
7262         iwl4965_set_rate(priv);
7263
7264         mutex_unlock(&priv->mutex);
7265
7266         IWL_DEBUG_MAC80211("leave\n");
7267 }
7268
7269 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7270                                  struct ieee80211_tx_control *control)
7271 {
7272         struct iwl_priv *priv = hw->priv;
7273         unsigned long flags;
7274
7275         mutex_lock(&priv->mutex);
7276         IWL_DEBUG_MAC80211("enter\n");
7277
7278         if (!iwl4965_is_ready_rf(priv)) {
7279                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7280                 mutex_unlock(&priv->mutex);
7281                 return -EIO;
7282         }
7283
7284         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7285                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7286                 mutex_unlock(&priv->mutex);
7287                 return -EIO;
7288         }
7289
7290         spin_lock_irqsave(&priv->lock, flags);
7291
7292         if (priv->ibss_beacon)
7293                 dev_kfree_skb(priv->ibss_beacon);
7294
7295         priv->ibss_beacon = skb;
7296
7297         priv->assoc_id = 0;
7298
7299         IWL_DEBUG_MAC80211("leave\n");
7300         spin_unlock_irqrestore(&priv->lock, flags);
7301
7302         iwlcore_reset_qos(priv);
7303
7304         queue_work(priv->workqueue, &priv->post_associate.work);
7305
7306         mutex_unlock(&priv->mutex);
7307
7308         return 0;
7309 }
7310
7311 #ifdef CONFIG_IWL4965_HT
7312
7313 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7314                                  struct iwl_priv *priv)
7315 {
7316         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7317         struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7318         struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7319
7320         IWL_DEBUG_MAC80211("enter: \n");
7321
7322         if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7323                 iwl_conf->is_ht = 0;
7324                 return;
7325         }
7326
7327         iwl_conf->is_ht = 1;
7328         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7329
7330         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7331                 iwl_conf->sgf |= 0x1;
7332         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7333                 iwl_conf->sgf |= 0x2;
7334
7335         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7336         iwl_conf->max_amsdu_size =
7337                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7338
7339         iwl_conf->supported_chan_width =
7340                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7341         iwl_conf->extension_chan_offset =
7342                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7343         /* If no above or below channel supplied disable FAT channel */
7344         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7345             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7346                 iwl_conf->supported_chan_width = 0;
7347
7348         iwl_conf->tx_mimo_ps_mode =
7349                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7350         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7351
7352         iwl_conf->control_channel = ht_bss_conf->primary_channel;
7353         iwl_conf->tx_chan_width =
7354                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7355         iwl_conf->ht_protection =
7356                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7357         iwl_conf->non_GF_STA_present =
7358                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7359
7360         IWL_DEBUG_MAC80211("control channel %d\n",
7361                 iwl_conf->control_channel);
7362         IWL_DEBUG_MAC80211("leave\n");
7363 }
7364
7365 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7366                                struct ieee80211_conf *conf)
7367 {
7368         struct iwl_priv *priv = hw->priv;
7369
7370         IWL_DEBUG_MAC80211("enter: \n");
7371
7372         iwl4965_ht_info_fill(conf, priv);
7373         iwl4965_set_rxon_chain(priv);
7374
7375         if (priv && priv->assoc_id &&
7376             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
7377                 unsigned long flags;
7378
7379                 spin_lock_irqsave(&priv->lock, flags);
7380                 if (priv->beacon_int)
7381                         queue_work(priv->workqueue, &priv->post_associate.work);
7382                 else
7383                         priv->call_post_assoc_from_beacon = 1;
7384                 spin_unlock_irqrestore(&priv->lock, flags);
7385         }
7386
7387         IWL_DEBUG_MAC80211("leave:\n");
7388         return 0;
7389 }
7390
7391 #endif /*CONFIG_IWL4965_HT*/
7392
7393 /*****************************************************************************
7394  *
7395  * sysfs attributes
7396  *
7397  *****************************************************************************/
7398
7399 #ifdef CONFIG_IWLWIFI_DEBUG
7400
7401 /*
7402  * The following adds a new attribute to the sysfs representation
7403  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7404  * used for controlling the debug level.
7405  *
7406  * See the level definitions in iwl for details.
7407  */
7408
7409 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7410 {
7411         return sprintf(buf, "0x%08X\n", iwl_debug_level);
7412 }
7413 static ssize_t store_debug_level(struct device_driver *d,
7414                                  const char *buf, size_t count)
7415 {
7416         char *p = (char *)buf;
7417         u32 val;
7418
7419         val = simple_strtoul(p, &p, 0);
7420         if (p == buf)
7421                 printk(KERN_INFO DRV_NAME
7422                        ": %s is not in hex or decimal form.\n", buf);
7423         else
7424                 iwl_debug_level = val;
7425
7426         return strnlen(buf, count);
7427 }
7428
7429 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7430                    show_debug_level, store_debug_level);
7431
7432 #endif /* CONFIG_IWLWIFI_DEBUG */
7433
7434 static ssize_t show_rf_kill(struct device *d,
7435                             struct device_attribute *attr, char *buf)
7436 {
7437         /*
7438          * 0 - RF kill not enabled
7439          * 1 - SW based RF kill active (sysfs)
7440          * 2 - HW based RF kill active
7441          * 3 - Both HW and SW based RF kill active
7442          */
7443         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7444         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7445                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7446
7447         return sprintf(buf, "%i\n", val);
7448 }
7449
7450 static ssize_t store_rf_kill(struct device *d,
7451                              struct device_attribute *attr,
7452                              const char *buf, size_t count)
7453 {
7454         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7455
7456         mutex_lock(&priv->mutex);
7457         iwl4965_radio_kill_sw(priv, buf[0] == '1');
7458         mutex_unlock(&priv->mutex);
7459
7460         return count;
7461 }
7462
7463 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7464
7465 static ssize_t show_temperature(struct device *d,
7466                                 struct device_attribute *attr, char *buf)
7467 {
7468         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7469
7470         if (!iwl4965_is_alive(priv))
7471                 return -EAGAIN;
7472
7473         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7474 }
7475
7476 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7477
7478 static ssize_t show_rs_window(struct device *d,
7479                               struct device_attribute *attr,
7480                               char *buf)
7481 {
7482         struct iwl_priv *priv = d->driver_data;
7483         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7484 }
7485 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7486
7487 static ssize_t show_tx_power(struct device *d,
7488                              struct device_attribute *attr, char *buf)
7489 {
7490         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7491         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7492 }
7493
7494 static ssize_t store_tx_power(struct device *d,
7495                               struct device_attribute *attr,
7496                               const char *buf, size_t count)
7497 {
7498         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7499         char *p = (char *)buf;
7500         u32 val;
7501
7502         val = simple_strtoul(p, &p, 10);
7503         if (p == buf)
7504                 printk(KERN_INFO DRV_NAME
7505                        ": %s is not in decimal form.\n", buf);
7506         else
7507                 iwl4965_hw_reg_set_txpower(priv, val);
7508
7509         return count;
7510 }
7511
7512 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7513
7514 static ssize_t show_flags(struct device *d,
7515                           struct device_attribute *attr, char *buf)
7516 {
7517         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7518
7519         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7520 }
7521
7522 static ssize_t store_flags(struct device *d,
7523                            struct device_attribute *attr,
7524                            const char *buf, size_t count)
7525 {
7526         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7527         u32 flags = simple_strtoul(buf, NULL, 0);
7528
7529         mutex_lock(&priv->mutex);
7530         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7531                 /* Cancel any currently running scans... */
7532                 if (iwl4965_scan_cancel_timeout(priv, 100))
7533                         IWL_WARNING("Could not cancel scan.\n");
7534                 else {
7535                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7536                                        flags);
7537                         priv->staging_rxon.flags = cpu_to_le32(flags);
7538                         iwl4965_commit_rxon(priv);
7539                 }
7540         }
7541         mutex_unlock(&priv->mutex);
7542
7543         return count;
7544 }
7545
7546 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7547
7548 static ssize_t show_filter_flags(struct device *d,
7549                                  struct device_attribute *attr, char *buf)
7550 {
7551         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7552
7553         return sprintf(buf, "0x%04X\n",
7554                 le32_to_cpu(priv->active_rxon.filter_flags));
7555 }
7556
7557 static ssize_t store_filter_flags(struct device *d,
7558                                   struct device_attribute *attr,
7559                                   const char *buf, size_t count)
7560 {
7561         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7562         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7563
7564         mutex_lock(&priv->mutex);
7565         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7566                 /* Cancel any currently running scans... */
7567                 if (iwl4965_scan_cancel_timeout(priv, 100))
7568                         IWL_WARNING("Could not cancel scan.\n");
7569                 else {
7570                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7571                                        "0x%04X\n", filter_flags);
7572                         priv->staging_rxon.filter_flags =
7573                                 cpu_to_le32(filter_flags);
7574                         iwl4965_commit_rxon(priv);
7575                 }
7576         }
7577         mutex_unlock(&priv->mutex);
7578
7579         return count;
7580 }
7581
7582 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7583                    store_filter_flags);
7584
7585 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7586
7587 static ssize_t show_measurement(struct device *d,
7588                                 struct device_attribute *attr, char *buf)
7589 {
7590         struct iwl_priv *priv = dev_get_drvdata(d);
7591         struct iwl4965_spectrum_notification measure_report;
7592         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7593         u8 *data = (u8 *) & measure_report;
7594         unsigned long flags;
7595
7596         spin_lock_irqsave(&priv->lock, flags);
7597         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7598                 spin_unlock_irqrestore(&priv->lock, flags);
7599                 return 0;
7600         }
7601         memcpy(&measure_report, &priv->measure_report, size);
7602         priv->measurement_status = 0;
7603         spin_unlock_irqrestore(&priv->lock, flags);
7604
7605         while (size && (PAGE_SIZE - len)) {
7606                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7607                                    PAGE_SIZE - len, 1);
7608                 len = strlen(buf);
7609                 if (PAGE_SIZE - len)
7610                         buf[len++] = '\n';
7611
7612                 ofs += 16;
7613                 size -= min(size, 16U);
7614         }
7615
7616         return len;
7617 }
7618
7619 static ssize_t store_measurement(struct device *d,
7620                                  struct device_attribute *attr,
7621                                  const char *buf, size_t count)
7622 {
7623         struct iwl_priv *priv = dev_get_drvdata(d);
7624         struct ieee80211_measurement_params params = {
7625                 .channel = le16_to_cpu(priv->active_rxon.channel),
7626                 .start_time = cpu_to_le64(priv->last_tsf),
7627                 .duration = cpu_to_le16(1),
7628         };
7629         u8 type = IWL_MEASURE_BASIC;
7630         u8 buffer[32];
7631         u8 channel;
7632
7633         if (count) {
7634                 char *p = buffer;
7635                 strncpy(buffer, buf, min(sizeof(buffer), count));
7636                 channel = simple_strtoul(p, NULL, 0);
7637                 if (channel)
7638                         params.channel = channel;
7639
7640                 p = buffer;
7641                 while (*p && *p != ' ')
7642                         p++;
7643                 if (*p)
7644                         type = simple_strtoul(p + 1, NULL, 0);
7645         }
7646
7647         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7648                        "channel %d (for '%s')\n", type, params.channel, buf);
7649         iwl4965_get_measurement(priv, &params, type);
7650
7651         return count;
7652 }
7653
7654 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7655                    show_measurement, store_measurement);
7656 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7657
7658 static ssize_t store_retry_rate(struct device *d,
7659                                 struct device_attribute *attr,
7660                                 const char *buf, size_t count)
7661 {
7662         struct iwl_priv *priv = dev_get_drvdata(d);
7663
7664         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7665         if (priv->retry_rate <= 0)
7666                 priv->retry_rate = 1;
7667
7668         return count;
7669 }
7670
7671 static ssize_t show_retry_rate(struct device *d,
7672                                struct device_attribute *attr, char *buf)
7673 {
7674         struct iwl_priv *priv = dev_get_drvdata(d);
7675         return sprintf(buf, "%d", priv->retry_rate);
7676 }
7677
7678 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7679                    store_retry_rate);
7680
7681 static ssize_t store_power_level(struct device *d,
7682                                  struct device_attribute *attr,
7683                                  const char *buf, size_t count)
7684 {
7685         struct iwl_priv *priv = dev_get_drvdata(d);
7686         int rc;
7687         int mode;
7688
7689         mode = simple_strtoul(buf, NULL, 0);
7690         mutex_lock(&priv->mutex);
7691
7692         if (!iwl4965_is_ready(priv)) {
7693                 rc = -EAGAIN;
7694                 goto out;
7695         }
7696
7697         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7698                 mode = IWL_POWER_AC;
7699         else
7700                 mode |= IWL_POWER_ENABLED;
7701
7702         if (mode != priv->power_mode) {
7703                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7704                 if (rc) {
7705                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7706                         goto out;
7707                 }
7708                 priv->power_mode = mode;
7709         }
7710
7711         rc = count;
7712
7713  out:
7714         mutex_unlock(&priv->mutex);
7715         return rc;
7716 }
7717
7718 #define MAX_WX_STRING 80
7719
7720 /* Values are in microsecond */
7721 static const s32 timeout_duration[] = {
7722         350000,
7723         250000,
7724         75000,
7725         37000,
7726         25000,
7727 };
7728 static const s32 period_duration[] = {
7729         400000,
7730         700000,
7731         1000000,
7732         1000000,
7733         1000000
7734 };
7735
7736 static ssize_t show_power_level(struct device *d,
7737                                 struct device_attribute *attr, char *buf)
7738 {
7739         struct iwl_priv *priv = dev_get_drvdata(d);
7740         int level = IWL_POWER_LEVEL(priv->power_mode);
7741         char *p = buf;
7742
7743         p += sprintf(p, "%d ", level);
7744         switch (level) {
7745         case IWL_POWER_MODE_CAM:
7746         case IWL_POWER_AC:
7747                 p += sprintf(p, "(AC)");
7748                 break;
7749         case IWL_POWER_BATTERY:
7750                 p += sprintf(p, "(BATTERY)");
7751                 break;
7752         default:
7753                 p += sprintf(p,
7754                              "(Timeout %dms, Period %dms)",
7755                              timeout_duration[level - 1] / 1000,
7756                              period_duration[level - 1] / 1000);
7757         }
7758
7759         if (!(priv->power_mode & IWL_POWER_ENABLED))
7760                 p += sprintf(p, " OFF\n");
7761         else
7762                 p += sprintf(p, " \n");
7763
7764         return (p - buf + 1);
7765
7766 }
7767
7768 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7769                    store_power_level);
7770
7771 static ssize_t show_channels(struct device *d,
7772                              struct device_attribute *attr, char *buf)
7773 {
7774         /* all this shit doesn't belong into sysfs anyway */
7775         return 0;
7776 }
7777
7778 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7779
7780 static ssize_t show_statistics(struct device *d,
7781                                struct device_attribute *attr, char *buf)
7782 {
7783         struct iwl_priv *priv = dev_get_drvdata(d);
7784         u32 size = sizeof(struct iwl4965_notif_statistics);
7785         u32 len = 0, ofs = 0;
7786         u8 *data = (u8 *) & priv->statistics;
7787         int rc = 0;
7788
7789         if (!iwl4965_is_alive(priv))
7790                 return -EAGAIN;
7791
7792         mutex_lock(&priv->mutex);
7793         rc = iwl4965_send_statistics_request(priv);
7794         mutex_unlock(&priv->mutex);
7795
7796         if (rc) {
7797                 len = sprintf(buf,
7798                               "Error sending statistics request: 0x%08X\n", rc);
7799                 return len;
7800         }
7801
7802         while (size && (PAGE_SIZE - len)) {
7803                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7804                                    PAGE_SIZE - len, 1);
7805                 len = strlen(buf);
7806                 if (PAGE_SIZE - len)
7807                         buf[len++] = '\n';
7808
7809                 ofs += 16;
7810                 size -= min(size, 16U);
7811         }
7812
7813         return len;
7814 }
7815
7816 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7817
7818 static ssize_t show_antenna(struct device *d,
7819                             struct device_attribute *attr, char *buf)
7820 {
7821         struct iwl_priv *priv = dev_get_drvdata(d);
7822
7823         if (!iwl4965_is_alive(priv))
7824                 return -EAGAIN;
7825
7826         return sprintf(buf, "%d\n", priv->antenna);
7827 }
7828
7829 static ssize_t store_antenna(struct device *d,
7830                              struct device_attribute *attr,
7831                              const char *buf, size_t count)
7832 {
7833         int ant;
7834         struct iwl_priv *priv = dev_get_drvdata(d);
7835
7836         if (count == 0)
7837                 return 0;
7838
7839         if (sscanf(buf, "%1i", &ant) != 1) {
7840                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7841                 return count;
7842         }
7843
7844         if ((ant >= 0) && (ant <= 2)) {
7845                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7846                 priv->antenna = (enum iwl4965_antenna)ant;
7847         } else
7848                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7849
7850
7851         return count;
7852 }
7853
7854 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7855
7856 static ssize_t show_status(struct device *d,
7857                            struct device_attribute *attr, char *buf)
7858 {
7859         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7860         if (!iwl4965_is_alive(priv))
7861                 return -EAGAIN;
7862         return sprintf(buf, "0x%08x\n", (int)priv->status);
7863 }
7864
7865 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7866
7867 static ssize_t dump_error_log(struct device *d,
7868                               struct device_attribute *attr,
7869                               const char *buf, size_t count)
7870 {
7871         char *p = (char *)buf;
7872
7873         if (p[0] == '1')
7874                 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7875
7876         return strnlen(buf, count);
7877 }
7878
7879 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7880
7881 static ssize_t dump_event_log(struct device *d,
7882                               struct device_attribute *attr,
7883                               const char *buf, size_t count)
7884 {
7885         char *p = (char *)buf;
7886
7887         if (p[0] == '1')
7888                 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7889
7890         return strnlen(buf, count);
7891 }
7892
7893 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7894
7895 /*****************************************************************************
7896  *
7897  * driver setup and teardown
7898  *
7899  *****************************************************************************/
7900
7901 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7902 {
7903         priv->workqueue = create_workqueue(DRV_NAME);
7904
7905         init_waitqueue_head(&priv->wait_command_queue);
7906
7907         INIT_WORK(&priv->up, iwl4965_bg_up);
7908         INIT_WORK(&priv->restart, iwl4965_bg_restart);
7909         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7910         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7911         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7912         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7913         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7914         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7915         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7916         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7917         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7918         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7919
7920         iwl4965_hw_setup_deferred_work(priv);
7921
7922         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7923                      iwl4965_irq_tasklet, (unsigned long)priv);
7924 }
7925
7926 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7927 {
7928         iwl4965_hw_cancel_deferred_work(priv);
7929
7930         cancel_delayed_work_sync(&priv->init_alive_start);
7931         cancel_delayed_work(&priv->scan_check);
7932         cancel_delayed_work(&priv->alive_start);
7933         cancel_delayed_work(&priv->post_associate);
7934         cancel_work_sync(&priv->beacon_update);
7935 }
7936
7937 static struct attribute *iwl4965_sysfs_entries[] = {
7938         &dev_attr_antenna.attr,
7939         &dev_attr_channels.attr,
7940         &dev_attr_dump_errors.attr,
7941         &dev_attr_dump_events.attr,
7942         &dev_attr_flags.attr,
7943         &dev_attr_filter_flags.attr,
7944 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7945         &dev_attr_measurement.attr,
7946 #endif
7947         &dev_attr_power_level.attr,
7948         &dev_attr_retry_rate.attr,
7949         &dev_attr_rf_kill.attr,
7950         &dev_attr_rs_window.attr,
7951         &dev_attr_statistics.attr,
7952         &dev_attr_status.attr,
7953         &dev_attr_temperature.attr,
7954         &dev_attr_tx_power.attr,
7955
7956         NULL
7957 };
7958
7959 static struct attribute_group iwl4965_attribute_group = {
7960         .name = NULL,           /* put in device directory */
7961         .attrs = iwl4965_sysfs_entries,
7962 };
7963
7964 static struct ieee80211_ops iwl4965_hw_ops = {
7965         .tx = iwl4965_mac_tx,
7966         .start = iwl4965_mac_start,
7967         .stop = iwl4965_mac_stop,
7968         .add_interface = iwl4965_mac_add_interface,
7969         .remove_interface = iwl4965_mac_remove_interface,
7970         .config = iwl4965_mac_config,
7971         .config_interface = iwl4965_mac_config_interface,
7972         .configure_filter = iwl4965_configure_filter,
7973         .set_key = iwl4965_mac_set_key,
7974         .update_tkip_key = iwl4965_mac_update_tkip_key,
7975         .get_stats = iwl4965_mac_get_stats,
7976         .get_tx_stats = iwl4965_mac_get_tx_stats,
7977         .conf_tx = iwl4965_mac_conf_tx,
7978         .get_tsf = iwl4965_mac_get_tsf,
7979         .reset_tsf = iwl4965_mac_reset_tsf,
7980         .beacon_update = iwl4965_mac_beacon_update,
7981         .bss_info_changed = iwl4965_bss_info_changed,
7982 #ifdef CONFIG_IWL4965_HT
7983         .conf_ht = iwl4965_mac_conf_ht,
7984         .ampdu_action = iwl4965_mac_ampdu_action,
7985 #endif  /* CONFIG_IWL4965_HT */
7986         .hw_scan = iwl4965_mac_hw_scan
7987 };
7988
7989 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7990 {
7991         int err = 0;
7992         struct iwl_priv *priv;
7993         struct ieee80211_hw *hw;
7994         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7995         DECLARE_MAC_BUF(mac);
7996
7997         /************************
7998          * 1. Allocating HW data
7999          ************************/
8000
8001         /* Disabling hardware scan means that mac80211 will perform scans
8002          * "the hard way", rather than using device's scan. */
8003         if (cfg->mod_params->disable_hw_scan) {
8004                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8005                 iwl4965_hw_ops.hw_scan = NULL;
8006         }
8007
8008         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
8009         if (!hw) {
8010                 err = -ENOMEM;
8011                 goto out;
8012         }
8013         priv = hw->priv;
8014         /* At this point both hw and priv are allocated. */
8015
8016         SET_IEEE80211_DEV(hw, &pdev->dev);
8017
8018         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8019         priv->cfg = cfg;
8020         priv->pci_dev = pdev;
8021
8022 #ifdef CONFIG_IWLWIFI_DEBUG
8023         iwl_debug_level = priv->cfg->mod_params->debug;
8024         atomic_set(&priv->restrict_refcnt, 0);
8025 #endif
8026
8027         /**************************
8028          * 2. Initializing PCI bus
8029          **************************/
8030         if (pci_enable_device(pdev)) {
8031                 err = -ENODEV;
8032                 goto out_ieee80211_free_hw;
8033         }
8034
8035         pci_set_master(pdev);
8036
8037         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8038         if (!err)
8039                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8040                 if (err) {
8041                         printk(KERN_WARNING DRV_NAME
8042                                 ": No suitable DMA available.\n");
8043                         goto out_pci_disable_device;
8044         }
8045
8046         err = pci_request_regions(pdev, DRV_NAME);
8047         if (err)
8048                 goto out_pci_disable_device;
8049
8050         pci_set_drvdata(pdev, priv);
8051
8052         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8053          * PCI Tx retries from interfering with C3 CPU state */
8054         pci_write_config_byte(pdev, 0x41, 0x00);
8055
8056         /***********************
8057          * 3. Read REV register
8058          ***********************/
8059         priv->hw_base = pci_iomap(pdev, 0, 0);
8060         if (!priv->hw_base) {
8061                 err = -ENODEV;
8062                 goto out_pci_release_regions;
8063         }
8064
8065         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8066                 (unsigned long long) pci_resource_len(pdev, 0));
8067         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8068
8069         printk(KERN_INFO DRV_NAME
8070                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8071
8072         /*****************
8073          * 4. Read EEPROM
8074          *****************/
8075         /* nic init */
8076         iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8077                 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8078
8079         iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8080         err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
8081                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8082                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8083         if (err < 0) {
8084                 IWL_DEBUG_INFO("Failed to init the card\n");
8085                 goto out_iounmap;
8086         }
8087         /* Read the EEPROM */
8088         err = iwl_eeprom_init(priv);
8089         if (err) {
8090                 IWL_ERROR("Unable to init EEPROM\n");
8091                 goto out_iounmap;
8092         }
8093         /* MAC Address location in EEPROM same for 3945/4965 */
8094         iwl_eeprom_get_mac(priv, priv->mac_addr);
8095         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8096         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8097
8098         /************************
8099          * 5. Setup HW constants
8100          ************************/
8101         /* Device-specific setup */
8102         if (iwl4965_hw_set_hw_setting(priv)) {
8103                 IWL_ERROR("failed to set hw settings\n");
8104                 goto out_iounmap;
8105         }
8106
8107         /*******************
8108          * 6. Setup hw/priv
8109          *******************/
8110
8111         err = iwl_setup(priv);
8112         if (err)
8113                 goto out_unset_hw_settings;
8114         /* At this point both hw and priv are initialized. */
8115
8116         /**********************************
8117          * 7. Initialize module parameters
8118          **********************************/
8119
8120         /* Disable radio (SW RF KILL) via parameter when loading driver */
8121         if (priv->cfg->mod_params->disable) {
8122                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8123                 IWL_DEBUG_INFO("Radio disabled.\n");
8124         }
8125
8126         if (priv->cfg->mod_params->enable_qos)
8127                 priv->qos_data.qos_enable = 1;
8128
8129         /********************
8130          * 8. Setup services
8131          ********************/
8132         iwl4965_disable_interrupts(priv);
8133
8134         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8135         if (err) {
8136                 IWL_ERROR("failed to create sysfs device attributes\n");
8137                 goto out_unset_hw_settings;
8138         }
8139
8140         err = iwl_dbgfs_register(priv, DRV_NAME);
8141         if (err) {
8142                 IWL_ERROR("failed to create debugfs files\n");
8143                 goto out_remove_sysfs;
8144         }
8145
8146         iwl4965_setup_deferred_work(priv);
8147         iwl4965_setup_rx_handlers(priv);
8148
8149         /********************
8150          * 9. Conclude
8151          ********************/
8152         pci_save_state(pdev);
8153         pci_disable_device(pdev);
8154
8155         return 0;
8156
8157  out_remove_sysfs:
8158         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8159  out_unset_hw_settings:
8160         iwl4965_unset_hw_setting(priv);
8161  out_iounmap:
8162         pci_iounmap(pdev, priv->hw_base);
8163  out_pci_release_regions:
8164         pci_release_regions(pdev);
8165         pci_set_drvdata(pdev, NULL);
8166  out_pci_disable_device:
8167         pci_disable_device(pdev);
8168  out_ieee80211_free_hw:
8169         ieee80211_free_hw(priv->hw);
8170  out:
8171         return err;
8172 }
8173
8174 static void iwl4965_pci_remove(struct pci_dev *pdev)
8175 {
8176         struct iwl_priv *priv = pci_get_drvdata(pdev);
8177         struct list_head *p, *q;
8178         int i;
8179
8180         if (!priv)
8181                 return;
8182
8183         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8184
8185         set_bit(STATUS_EXIT_PENDING, &priv->status);
8186
8187         iwl4965_down(priv);
8188
8189         /* Free MAC hash list for ADHOC */
8190         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8191                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8192                         list_del(p);
8193                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8194                 }
8195         }
8196
8197         iwl_dbgfs_unregister(priv);
8198         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8199
8200         iwl4965_dealloc_ucode_pci(priv);
8201
8202         if (priv->rxq.bd)
8203                 iwl4965_rx_queue_free(priv, &priv->rxq);
8204         iwl4965_hw_txq_ctx_free(priv);
8205
8206         iwl4965_unset_hw_setting(priv);
8207         iwlcore_clear_stations_table(priv);
8208
8209         if (priv->mac80211_registered) {
8210                 ieee80211_unregister_hw(priv->hw);
8211                 iwl4965_rate_control_unregister(priv->hw);
8212         }
8213
8214         /*netif_stop_queue(dev); */
8215         flush_workqueue(priv->workqueue);
8216
8217         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8218          * priv->workqueue... so we can't take down the workqueue
8219          * until now... */
8220         destroy_workqueue(priv->workqueue);
8221         priv->workqueue = NULL;
8222
8223         pci_iounmap(pdev, priv->hw_base);
8224         pci_release_regions(pdev);
8225         pci_disable_device(pdev);
8226         pci_set_drvdata(pdev, NULL);
8227
8228         iwl_free_channel_map(priv);
8229         iwl4965_free_geos(priv);
8230
8231         if (priv->ibss_beacon)
8232                 dev_kfree_skb(priv->ibss_beacon);
8233
8234         ieee80211_free_hw(priv->hw);
8235 }
8236
8237 #ifdef CONFIG_PM
8238
8239 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8240 {
8241         struct iwl_priv *priv = pci_get_drvdata(pdev);
8242
8243         if (priv->is_open) {
8244                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8245                 iwl4965_mac_stop(priv->hw);
8246                 priv->is_open = 1;
8247         }
8248
8249         pci_set_power_state(pdev, PCI_D3hot);
8250
8251         return 0;
8252 }
8253
8254 static int iwl4965_pci_resume(struct pci_dev *pdev)
8255 {
8256         struct iwl_priv *priv = pci_get_drvdata(pdev);
8257
8258         pci_set_power_state(pdev, PCI_D0);
8259
8260         if (priv->is_open)
8261                 iwl4965_mac_start(priv->hw);
8262
8263         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8264         return 0;
8265 }
8266
8267 #endif /* CONFIG_PM */
8268
8269 /*****************************************************************************
8270  *
8271  * driver and module entry point
8272  *
8273  *****************************************************************************/
8274
8275 static struct pci_driver iwl4965_driver = {
8276         .name = DRV_NAME,
8277         .id_table = iwl4965_hw_card_ids,
8278         .probe = iwl4965_pci_probe,
8279         .remove = __devexit_p(iwl4965_pci_remove),
8280 #ifdef CONFIG_PM
8281         .suspend = iwl4965_pci_suspend,
8282         .resume = iwl4965_pci_resume,
8283 #endif
8284 };
8285
8286 static int __init iwl4965_init(void)
8287 {
8288
8289         int ret;
8290         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8291         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8292         ret = pci_register_driver(&iwl4965_driver);
8293         if (ret) {
8294                 IWL_ERROR("Unable to initialize PCI module\n");
8295                 return ret;
8296         }
8297 #ifdef CONFIG_IWLWIFI_DEBUG
8298         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8299         if (ret) {
8300                 IWL_ERROR("Unable to create driver sysfs file\n");
8301                 pci_unregister_driver(&iwl4965_driver);
8302                 return ret;
8303         }
8304 #endif
8305
8306         return ret;
8307 }
8308
8309 static void __exit iwl4965_exit(void)
8310 {
8311 #ifdef CONFIG_IWLWIFI_DEBUG
8312         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8313 #endif
8314         pci_unregister_driver(&iwl4965_driver);
8315 }
8316
8317 module_exit(iwl4965_exit);
8318 module_init(iwl4965_init);