git.oblomov.eu Git - linux-2.6/blob - 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 /* module parameters */
  63 struct iwl_mod_params iwl4965_mod_params = {
  64         .num_of_queues = IWL_MAX_NUM_QUEUES,
  65         .enable_qos = 1,
  66         .amsdu_size_8K = 1,
  67         /* the rest are 0 by default */
  68 };
  69
  70 /*
  71  * module name, copyright, version, etc.
  72  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  73  */
  74
  75 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  76
  77 #ifdef CONFIG_IWLWIFI_DEBUG
  78 #define VD "d"
  79 #else
  80 #define VD
  81 #endif
  82
  83 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  84 #define VS "s"
  85 #else
  86 #define VS
  87 #endif
  88
  89 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  90
  91
  92 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  93 MODULE_VERSION(DRV_VERSION);
  94 MODULE_AUTHOR(DRV_COPYRIGHT);
  95 MODULE_LICENSE("GPL");
  96
  97 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
  98 {
  99         u16 fc = le16_to_cpu(hdr->frame_control);
 100         int hdr_len = ieee80211_get_hdrlen(fc);
 101
 102         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
 103                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
 104         return NULL;
 105 }
 106
 107 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
 108                 struct iwl_priv *priv, enum ieee80211_band band)
 109 {
 110         return priv->hw->wiphy->bands[band];
 111 }
 112
 113 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 114 {
 115         /* Single white space is for Linksys APs */
 116         if (essid_len == 1 && essid[0] == ' ')
 117                 return 1;
 118
 119         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 120         while (essid_len) {
 121                 essid_len--;
 122                 if (essid[essid_len] != '\0')
 123                         return 0;
 124         }
 125
 126         return 1;
 127 }
 128
 129 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 130 {
 131         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 132         const char *s = essid;
 133         char *d = escaped;
 134
 135         if (iwl4965_is_empty_essid(essid, essid_len)) {
 136                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 137                 return escaped;
 138         }
 139
 140         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 141         while (essid_len--) {
 142                 if (*s == '\0') {
 143                         *d++ = '\\';
 144                         *d++ = '0';
 145                         s++;
 146                 } else
 147                         *d++ = *s++;
 148         }
 149         *d = '\0';
 150         return escaped;
 151 }
 152
 153 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 154  * DMA services
 155  *
 156  * Theory of operation
 157  *
 158  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 159  * of buffer descriptors, each of which points to one or more data buffers for
 160  * the device to read from or fill.  Driver and device exchange status of each
 161  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 162  * entries in each circular buffer, to protect against confusing empty and full
 163  * queue states.
 164  *
 165  * The device reads or writes the data in the queues via the device's several
 166  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 167  *
 168  * For Tx queue, there are low mark and high mark limits. If, after queuing
 169  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 170  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 171  * Tx queue resumed.
 172  *
 173  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 174  * queue (#4) for sending commands to the device firmware, and 15 other
 175  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 176  *
 177  * See more detailed info in iwl-4965-hw.h.
 178  ***************************************************/
 179
 180 int iwl4965_queue_space(const struct iwl4965_queue *q)
 181 {
 182         int s = q->read_ptr - q->write_ptr;
 183
 184         if (q->read_ptr > q->write_ptr)
 185                 s -= q->n_bd;
 186
 187         if (s <= 0)
 188                 s += q->n_window;
 189         /* keep some reserve to not confuse empty and full situations */
 190         s -= 2;
 191         if (s < 0)
 192                 s = 0;
 193         return s;
 194 }
 195
 196
 197 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 198 {
 199         return q->write_ptr > q->read_ptr ?
 200                 (i >= q->read_ptr && i < q->write_ptr) :
 201                 !(i < q->read_ptr && i >= q->write_ptr);
 202 }
 203
 204 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 205 {
 206         /* This is for scan command, the big buffer at end of command array */
 207         if (is_huge)
 208                 return q->n_window;     /* must be power of 2 */
 209
 210         /* Otherwise, use normal size buffers */
 211         return index & (q->n_window - 1);
 212 }
 213
 214 /**
 215  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 216  */
 217 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
 218                           int count, int slots_num, u32 id)
 219 {
 220         q->n_bd = count;
 221         q->n_window = slots_num;
 222         q->id = id;
 223
 224         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 225          * and iwl_queue_dec_wrap are broken. */
 226         BUG_ON(!is_power_of_2(count));
 227
 228         /* slots_num must be power-of-two size, otherwise
 229          * get_cmd_index is broken. */
 230         BUG_ON(!is_power_of_2(slots_num));
 231
 232         q->low_mark = q->n_window / 4;
 233         if (q->low_mark < 4)
 234                 q->low_mark = 4;
 235
 236         q->high_mark = q->n_window / 8;
 237         if (q->high_mark < 2)
 238                 q->high_mark = 2;
 239
 240         q->write_ptr = q->read_ptr = 0;
 241
 242         return 0;
 243 }
 244
 245 /**
 246  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 247  */
 248 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
 249                               struct iwl4965_tx_queue *txq, u32 id)
 250 {
 251         struct pci_dev *dev = priv->pci_dev;
 252
 253         /* Driver private data, only for Tx (not command) queues,
 254          * not shared with device. */
 255         if (id != IWL_CMD_QUEUE_NUM) {
 256                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 257                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 258                 if (!txq->txb) {
 259                         IWL_ERROR("kmalloc for auxiliary BD "
 260                                   "structures failed\n");
 261                         goto error;
 262                 }
 263         } else
 264                 txq->txb = NULL;
 265
 266         /* Circular buffer of transmit frame descriptors (TFDs),
 267          * shared with device */
 268         txq->bd = pci_alloc_consistent(dev,
 269                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 270                         &txq->q.dma_addr);
 271
 272         if (!txq->bd) {
 273                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 274                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 275                 goto error;
 276         }
 277         txq->q.id = id;
 278
 279         return 0;
 280
 281  error:
 282         if (txq->txb) {
 283                 kfree(txq->txb);
 284                 txq->txb = NULL;
 285         }
 286
 287         return -ENOMEM;
 288 }
 289
 290 /**
 291  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 292  */
 293 int iwl4965_tx_queue_init(struct iwl_priv *priv,
 294                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 295 {
 296         struct pci_dev *dev = priv->pci_dev;
 297         int len;
 298         int rc = 0;
 299
 300         /*
 301          * Alloc buffer array for commands (Tx or other types of commands).
 302          * For the command queue (#4), allocate command space + one big
 303          * command for scan, since scan command is very huge; the system will
 304          * not have two scans at the same time, so only one is needed.
 305          * For normal Tx queues (all other queues), no super-size command
 306          * space is needed.
 307          */
 308         len = sizeof(struct iwl_cmd) * slots_num;
 309         if (txq_id == IWL_CMD_QUEUE_NUM)
 310                 len +=  IWL_MAX_SCAN_SIZE;
 311         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 312         if (!txq->cmd)
 313                 return -ENOMEM;
 314
 315         /* Alloc driver data array and TFD circular buffer */
 316         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 317         if (rc) {
 318                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 319
 320                 return -ENOMEM;
 321         }
 322         txq->need_update = 0;
 323
 324         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 325          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 326         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 327
 328         /* Initialize queue's high/low-water marks, and head/tail indexes */
 329         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 330
 331         /* Tell device where to find queue */
 332         iwl4965_hw_tx_queue_init(priv, txq);
 333
 334         return 0;
 335 }
 336
 337 /**
 338  * iwl4965_tx_queue_free - Deallocate DMA queue.
 339  * @txq: Transmit queue to deallocate.
 340  *
 341  * Empty queue by removing and destroying all BD's.
 342  * Free all buffers.
 343  * 0-fill, but do not free "txq" descriptor structure.
 344  */
 345 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
 346 {
 347         struct iwl4965_queue *q = &txq->q;
 348         struct pci_dev *dev = priv->pci_dev;
 349         int len;
 350
 351         if (q->n_bd == 0)
 352                 return;
 353
 354         /* first, empty all BD's */
 355         for (; q->write_ptr != q->read_ptr;
 356              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 357                 iwl4965_hw_txq_free_tfd(priv, txq);
 358
 359         len = sizeof(struct iwl_cmd) * q->n_window;
 360         if (q->id == IWL_CMD_QUEUE_NUM)
 361                 len += IWL_MAX_SCAN_SIZE;
 362
 363         /* De-alloc array of command/tx buffers */
 364         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 365
 366         /* De-alloc circular buffer of TFDs */
 367         if (txq->q.n_bd)
 368                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 369                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 370
 371         /* De-alloc array of per-TFD driver data */
 372         if (txq->txb) {
 373                 kfree(txq->txb);
 374                 txq->txb = NULL;
 375         }
 376
 377         /* 0-fill queue descriptor structure */
 378         memset(txq, 0, sizeof(*txq));
 379 }
 380
 381 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 382
 383 /*************** STATION TABLE MANAGEMENT ****
 384  * mac80211 should be examined to determine if sta_info is duplicating
 385  * the functionality provided here
 386  */
 387
 388 /**************************************************************/
 389
 390 #if 0 /* temporary disable till we add real remove station */
 391 /**
 392  * iwl4965_remove_station - Remove driver's knowledge of station.
 393  *
 394  * NOTE:  This does not remove station from device's station table.
 395  */
 396 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 397 {
 398         int index = IWL_INVALID_STATION;
 399         int i;
 400         unsigned long flags;
 401
 402         spin_lock_irqsave(&priv->sta_lock, flags);
 403
 404         if (is_ap)
 405                 index = IWL_AP_ID;
 406         else if (is_broadcast_ether_addr(addr))
 407                 index = priv->hw_setting.bcast_sta_id;
 408         else
 409                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 410                         if (priv->stations[i].used &&
 411                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 412                                                 addr)) {
 413                                 index = i;
 414                                 break;
 415                         }
 416
 417         if (unlikely(index == IWL_INVALID_STATION))
 418                 goto out;
 419
 420         if (priv->stations[index].used) {
 421                 priv->stations[index].used = 0;
 422                 priv->num_stations--;
 423         }
 424
 425         BUG_ON(priv->num_stations < 0);
 426
 427 out:
 428         spin_unlock_irqrestore(&priv->sta_lock, flags);
 429         return 0;
 430 }
 431 #endif
 432
 433 /**
 434  * iwl4965_add_station_flags - Add station to tables in driver and device
 435  */
 436 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
 437                                 int is_ap, u8 flags, void *ht_data)
 438 {
 439         int i;
 440         int index = IWL_INVALID_STATION;
 441         struct iwl4965_station_entry *station;
 442         unsigned long flags_spin;
 443         DECLARE_MAC_BUF(mac);
 444
 445         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 446         if (is_ap)
 447                 index = IWL_AP_ID;
 448         else if (is_broadcast_ether_addr(addr))
 449                 index = priv->hw_setting.bcast_sta_id;
 450         else
 451                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 452                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 453                                                 addr)) {
 454                                 index = i;
 455                                 break;
 456                         }
 457
 458                         if (!priv->stations[i].used &&
 459                             index == IWL_INVALID_STATION)
 460                                 index = i;
 461                 }
 462
 463
 464         /* These two conditions have the same outcome, but keep them separate
 465           since they have different meanings */
 466         if (unlikely(index == IWL_INVALID_STATION)) {
 467                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 468                 return index;
 469         }
 470
 471         if (priv->stations[index].used &&
 472             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 473                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 474                 return index;
 475         }
 476
 477
 478         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 479         station = &priv->stations[index];
 480         station->used = 1;
 481         priv->num_stations++;
 482
 483         /* Set up the REPLY_ADD_STA command to send to device */
 484         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 485         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 486         station->sta.mode = 0;
 487         station->sta.sta.sta_id = index;
 488         station->sta.station_flags = 0;
 489
 490 #ifdef CONFIG_IWL4965_HT
 491         /* BCAST station and IBSS stations do not work in HT mode */
 492         if (index != priv->hw_setting.bcast_sta_id &&
 493             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 494                 iwl4965_set_ht_add_station(priv, index,
 495                                  (struct ieee80211_ht_info *) ht_data);
 496 #endif /*CONFIG_IWL4965_HT*/
 497
 498         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 499
 500         /* Add station to device's station table */
 501         iwl4965_send_add_station(priv, &station->sta, flags);
 502         return index;
 503
 504 }
 505
 506 /*************** DRIVER STATUS FUNCTIONS   *****/
 507
 508 static inline int iwl4965_is_ready(struct iwl_priv *priv)
 509 {
 510         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
 511          * set but EXIT_PENDING is not */
 512         return test_bit(STATUS_READY, &priv->status) &&
 513                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
 514                !test_bit(STATUS_EXIT_PENDING, &priv->status);
 515 }
 516
 517 static inline int iwl4965_is_alive(struct iwl_priv *priv)
 518 {
 519         return test_bit(STATUS_ALIVE, &priv->status);
 520 }
 521
 522 static inline int iwl4965_is_init(struct iwl_priv *priv)
 523 {
 524         return test_bit(STATUS_INIT, &priv->status);
 525 }
 526
 527 static inline int iwl4965_is_rfkill(struct iwl_priv *priv)
 528 {
 529         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
 530                test_bit(STATUS_RF_KILL_SW, &priv->status);
 531 }
 532
 533 static inline int iwl4965_is_ready_rf(struct iwl_priv *priv)
 534 {
 535
 536         if (iwl4965_is_rfkill(priv))
 537                 return 0;
 538
 539         return iwl4965_is_ready(priv);
 540 }
 541
 542 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 543
 544 /**
 545  * iwl4965_enqueue_hcmd - enqueue a uCode command
 546  * @priv: device private data point
 547  * @cmd: a point to the ucode command structure
 548  *
 549  * The function returns < 0 values to indicate the operation is
 550  * failed. On success, it turns the index (> 0) of command in the
 551  * command queue.
 552  */
 553 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 554 {
 555         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 556         struct iwl4965_queue *q = &txq->q;
 557         struct iwl4965_tfd_frame *tfd;
 558         u32 *control_flags;
 559         struct iwl_cmd *out_cmd;
 560         u32 idx;
 561         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 562         dma_addr_t phys_addr;
 563         int ret;
 564         unsigned long flags;
 565
 566         /* If any of the command structures end up being larger than
 567          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 568          * we will need to increase the size of the TFD entries */
 569         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 570                !(cmd->meta.flags & CMD_SIZE_HUGE));
 571
 572         if (iwl4965_is_rfkill(priv)) {
 573                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 574                 return -EIO;
 575         }
 576
 577         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 578                 IWL_ERROR("No space for Tx\n");
 579                 return -ENOSPC;
 580         }
 581
 582         spin_lock_irqsave(&priv->hcmd_lock, flags);
 583
 584         tfd = &txq->bd[q->write_ptr];
 585         memset(tfd, 0, sizeof(*tfd));
 586
 587         control_flags = (u32 *) tfd;
 588
 589         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 590         out_cmd = &txq->cmd[idx];
 591
 592         out_cmd->hdr.cmd = cmd->id;
 593         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 594         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 595
 596         /* At this point, the out_cmd now has all of the incoming cmd
 597          * information */
 598
 599         out_cmd->hdr.flags = 0;
 600         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 601                         INDEX_TO_SEQ(q->write_ptr));
 602         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 603                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 604
 605         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 606                         offsetof(struct iwl_cmd, hdr);
 607         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 608
 609         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 610                      "%d bytes at %d[%d]:%d\n",
 611                      get_cmd_string(out_cmd->hdr.cmd),
 612                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 613                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 614
 615         txq->need_update = 1;
 616
 617         /* Set up entry in queue's byte count circular buffer */
 618         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
 619
 620         /* Increment and update queue's write index */
 621         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 622         iwl4965_tx_queue_update_write_ptr(priv, txq);
 623
 624         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 625         return ret ? ret : idx;
 626 }
 627
 628 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 629 {
 630         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
 631
 632         if (hw_decrypt)
 633                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 634         else
 635                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 636
 637 }
 638
 639 int iwl4965_send_statistics_request(struct iwl_priv *priv)
 640 {
 641         u32 flags = 0;
 642         return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 643                                       sizeof(flags), &flags);
 644 }
 645
 646 /**
 647  * iwl4965_rxon_add_station - add station into station table.
 648  *
 649  * there is only one AP station with id= IWL_AP_ID
 650  * NOTE: mutex must be held before calling this fnction
 651  */
 652 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
 653                                 const u8 *addr, int is_ap)
 654 {
 655         u8 sta_id;
 656
 657         /* Add station to device's station table */
 658 #ifdef CONFIG_IWL4965_HT
 659         struct ieee80211_conf *conf = &priv->hw->conf;
 660         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 661
 662         if ((is_ap) &&
 663             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 664             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 665                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 666                                                    0, cur_ht_config);
 667         else
 668 #endif /* CONFIG_IWL4965_HT */
 669                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 670                                                    0, NULL);
 671
 672         /* Set up default rate scaling table in device's station table */
 673         iwl4965_add_station(priv, addr, is_ap);
 674
 675         return sta_id;
 676 }
 677
 678 /**
 679  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 680  *
 681  * NOTE:  This is really only useful during development and can eventually
 682  * be #ifdef'd out once the driver is stable and folks aren't actively
 683  * making changes
 684  */
 685 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 686 {
 687         int error = 0;
 688         int counter = 1;
 689
 690         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 691                 error |= le32_to_cpu(rxon->flags &
 692                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 693                                  RXON_FLG_RADAR_DETECT_MSK));
 694                 if (error)
 695                         IWL_WARNING("check 24G fields %d | %d\n",
 696                                     counter++, error);
 697         } else {
 698                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 699                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 700                 if (error)
 701                         IWL_WARNING("check 52 fields %d | %d\n",
 702                                     counter++, error);
 703                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 704                 if (error)
 705                         IWL_WARNING("check 52 CCK %d | %d\n",
 706                                     counter++, error);
 707         }
 708         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 709         if (error)
 710                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 711
 712         /* make sure basic rates 6Mbps and 1Mbps are supported */
 713         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 714                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 715         if (error)
 716                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 717
 718         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 719         if (error)
 720                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 721
 722         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 723                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 724         if (error)
 725                 IWL_WARNING("check CCK and short slot %d | %d\n",
 726                             counter++, error);
 727
 728         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 729                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 730         if (error)
 731                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 732                             counter++, error);
 733
 734         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 735                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 736         if (error)
 737                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 738                             counter++, error);
 739
 740         if (error)
 741                 IWL_WARNING("Tuning to channel %d\n",
 742                             le16_to_cpu(rxon->channel));
 743
 744         if (error) {
 745                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 746                 return -1;
 747         }
 748         return 0;
 749 }
 750
 751 /**
 752  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 753  * @priv: staging_rxon is compared to active_rxon
 754  *
 755  * If the RXON structure is changing enough to require a new tune,
 756  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 757  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 758  */
 759 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 760 {
 761
 762         /* These items are only settable from the full RXON command */
 763         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 764             compare_ether_addr(priv->staging_rxon.bssid_addr,
 765                                priv->active_rxon.bssid_addr) ||
 766             compare_ether_addr(priv->staging_rxon.node_addr,
 767                                priv->active_rxon.node_addr) ||
 768             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 769                                priv->active_rxon.wlap_bssid_addr) ||
 770             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 771             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 772             (priv->staging_rxon.air_propagation !=
 773              priv->active_rxon.air_propagation) ||
 774             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 775              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 776             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 777              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 778             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 779             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 780                 return 1;
 781
 782         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 783          * be updated with the RXON_ASSOC command -- however only some
 784          * flag transitions are allowed using RXON_ASSOC */
 785
 786         /* Check if we are not switching bands */
 787         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 788             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 789                 return 1;
 790
 791         /* Check if we are switching association toggle */
 792         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 793                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 794                 return 1;
 795
 796         return 0;
 797 }
 798
 799 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
 800 {
 801         int rc = 0;
 802         struct iwl4965_rx_packet *res = NULL;
 803         struct iwl4965_rxon_assoc_cmd rxon_assoc;
 804         struct iwl_host_cmd cmd = {
 805                 .id = REPLY_RXON_ASSOC,
 806                 .len = sizeof(rxon_assoc),
 807                 .meta.flags = CMD_WANT_SKB,
 808                 .data = &rxon_assoc,
 809         };
 810         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
 811         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
 812
 813         if ((rxon1->flags == rxon2->flags) &&
 814             (rxon1->filter_flags == rxon2->filter_flags) &&
 815             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 816             (rxon1->ofdm_ht_single_stream_basic_rates ==
 817              rxon2->ofdm_ht_single_stream_basic_rates) &&
 818             (rxon1->ofdm_ht_dual_stream_basic_rates ==
 819              rxon2->ofdm_ht_dual_stream_basic_rates) &&
 820             (rxon1->rx_chain == rxon2->rx_chain) &&
 821             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 822                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 823                 return 0;
 824         }
 825
 826         rxon_assoc.flags = priv->staging_rxon.flags;
 827         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
 828         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
 829         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
 830         rxon_assoc.reserved = 0;
 831         rxon_assoc.ofdm_ht_single_stream_basic_rates =
 832             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
 833         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
 834             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
 835         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
 836
 837         rc = iwl_send_cmd_sync(priv, &cmd);
 838         if (rc)
 839                 return rc;
 840
 841         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
 842         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 843                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
 844                 rc = -EIO;
 845         }
 846
 847         priv->alloc_rxb_skb--;
 848         dev_kfree_skb_any(cmd.meta.u.skb);
 849
 850         return rc;
 851 }
 852
 853 /**
 854  * iwl4965_commit_rxon - commit staging_rxon to hardware
 855  *
 856  * The RXON command in staging_rxon is committed to the hardware and
 857  * the active_rxon structure is updated with the new data.  This
 858  * function correctly transitions out of the RXON_ASSOC_MSK state if
 859  * a HW tune is required based on the RXON structure changes.
 860  */
 861 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 862 {
 863         /* cast away the const for active_rxon in this function */
 864         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 865         DECLARE_MAC_BUF(mac);
 866         int rc = 0;
 867
 868         if (!iwl4965_is_alive(priv))
 869                 return -1;
 870
 871         /* always get timestamp with Rx frame */
 872         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 873
 874         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 875         if (rc) {
 876                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 877                 return -EINVAL;
 878         }
 879
 880         /* If we don't need to send a full RXON, we can use
 881          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 882          * and other flags for the current radio configuration. */
 883         if (!iwl4965_full_rxon_required(priv)) {
 884                 rc = iwl4965_send_rxon_assoc(priv);
 885                 if (rc) {
 886                         IWL_ERROR("Error setting RXON_ASSOC "
 887                                   "configuration (%d).\n", rc);
 888                         return rc;
 889                 }
 890
 891                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 892
 893                 return 0;
 894         }
 895
 896         /* station table will be cleared */
 897         priv->assoc_station_added = 0;
 898
 899 #ifdef CONFIG_IWL4965_SENSITIVITY
 900         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 901         if (!priv->error_recovering)
 902                 priv->start_calib = 0;
 903
 904         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 905 #endif /* CONFIG_IWL4965_SENSITIVITY */
 906
 907         /* If we are currently associated and the new config requires
 908          * an RXON_ASSOC and the new config wants the associated mask enabled,
 909          * we must clear the associated from the active configuration
 910          * before we apply the new config */
 911         if (iwl4965_is_associated(priv) &&
 912             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 913                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 914                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 915
 916                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 917                                       sizeof(struct iwl4965_rxon_cmd),
 918                                       &priv->active_rxon);
 919
 920                 /* If the mask clearing failed then we set
 921                  * active_rxon back to what it was previously */
 922                 if (rc) {
 923                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 924                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 925                                   "configuration (%d).\n", rc);
 926                         return rc;
 927                 }
 928         }
 929
 930         IWL_DEBUG_INFO("Sending RXON\n"
 931                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 932                        "* channel = %d\n"
 933                        "* bssid = %s\n",
 934                        ((priv->staging_rxon.filter_flags &
 935                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 936                        le16_to_cpu(priv->staging_rxon.channel),
 937                        print_mac(mac, priv->staging_rxon.bssid_addr));
 938
 939         iwl4965_set_rxon_hwcrypto(priv, priv->cfg->mod_params->hw_crypto);
 940         /* Apply the new configuration */
 941         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 942                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
 943         if (rc) {
 944                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 945                 return rc;
 946         }
 947
 948         iwlcore_clear_stations_table(priv);
 949
 950 #ifdef CONFIG_IWL4965_SENSITIVITY
 951         if (!priv->error_recovering)
 952                 priv->start_calib = 0;
 953
 954         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 955         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 956 #endif /* CONFIG_IWL4965_SENSITIVITY */
 957
 958         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 959
 960         /* If we issue a new RXON command which required a tune then we must
 961          * send a new TXPOWER command or we won't be able to Tx any frames */
 962         rc = iwl4965_hw_reg_send_txpower(priv);
 963         if (rc) {
 964                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 965                 return rc;
 966         }
 967
 968         /* Add the broadcast address so we can send broadcast frames */
 969         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
 970             IWL_INVALID_STATION) {
 971                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 972                 return -EIO;
 973         }
 974
 975         /* If we have set the ASSOC_MSK and we are in BSS mode then
 976          * add the IWL_AP_ID to the station rate table */
 977         if (iwl4965_is_associated(priv) &&
 978             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 979                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 980                     == IWL_INVALID_STATION) {
 981                         IWL_ERROR("Error adding AP address for transmit.\n");
 982                         return -EIO;
 983                 }
 984                 priv->assoc_station_added = 1;
 985         }
 986
 987         return 0;
 988 }
 989
 990 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 991 {
 992         struct iwl4965_bt_cmd bt_cmd = {
 993                 .flags = 3,
 994                 .lead_time = 0xAA,
 995                 .max_kill = 1,
 996                 .kill_ack_mask = 0,
 997                 .kill_cts_mask = 0,
 998         };
 999
1000         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1001                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1002 }
1003
1004 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
1005 {
1006         int rc = 0;
1007         struct iwl4965_rx_packet *res;
1008         struct iwl_host_cmd cmd = {
1009                 .id = REPLY_SCAN_ABORT_CMD,
1010                 .meta.flags = CMD_WANT_SKB,
1011         };
1012
1013         /* If there isn't a scan actively going on in the hardware
1014          * then we are in between scan bands and not actually
1015          * actively scanning, so don't send the abort command */
1016         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1017                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1018                 return 0;
1019         }
1020
1021         rc = iwl_send_cmd_sync(priv, &cmd);
1022         if (rc) {
1023                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1024                 return rc;
1025         }
1026
1027         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1028         if (res->u.status != CAN_ABORT_STATUS) {
1029                 /* The scan abort will return 1 for success or
1030                  * 2 for "failure".  A failure condition can be
1031                  * due to simply not being in an active scan which
1032                  * can occur if we send the scan abort before we
1033                  * the microcode has notified us that a scan is
1034                  * completed. */
1035                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1036                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1037                 clear_bit(STATUS_SCAN_HW, &priv->status);
1038         }
1039
1040         dev_kfree_skb_any(cmd.meta.u.skb);
1041
1042         return rc;
1043 }
1044
1045 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
1046                                         struct iwl_cmd *cmd,
1047                                         struct sk_buff *skb)
1048 {
1049         return 1;
1050 }
1051
1052 /*
1053  * CARD_STATE_CMD
1054  *
1055  * Use: Sets the device's internal card state to enable, disable, or halt
1056  *
1057  * When in the 'enable' state the card operates as normal.
1058  * When in the 'disable' state, the card enters into a low power mode.
1059  * When in the 'halt' state, the card is shut down and must be fully
1060  * restarted to come back on.
1061  */
1062 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1063 {
1064         struct iwl_host_cmd cmd = {
1065                 .id = REPLY_CARD_STATE_CMD,
1066                 .len = sizeof(u32),
1067                 .data = &flags,
1068                 .meta.flags = meta_flag,
1069         };
1070
1071         if (meta_flag & CMD_ASYNC)
1072                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1073
1074         return iwl_send_cmd(priv, &cmd);
1075 }
1076
1077 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
1078                                      struct iwl_cmd *cmd, struct sk_buff *skb)
1079 {
1080         struct iwl4965_rx_packet *res = NULL;
1081
1082         if (!skb) {
1083                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1084                 return 1;
1085         }
1086
1087         res = (struct iwl4965_rx_packet *)skb->data;
1088         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1089                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1090                           res->hdr.flags);
1091                 return 1;
1092         }
1093
1094         switch (res->u.add_sta.status) {
1095         case ADD_STA_SUCCESS_MSK:
1096                 break;
1097         default:
1098                 break;
1099         }
1100
1101         /* We didn't cache the SKB; let the caller free it */
1102         return 1;
1103 }
1104
1105 int iwl4965_send_add_station(struct iwl_priv *priv,
1106                          struct iwl4965_addsta_cmd *sta, u8 flags)
1107 {
1108         struct iwl4965_rx_packet *res = NULL;
1109         int rc = 0;
1110         struct iwl_host_cmd cmd = {
1111                 .id = REPLY_ADD_STA,
1112                 .len = sizeof(struct iwl4965_addsta_cmd),
1113                 .meta.flags = flags,
1114                 .data = sta,
1115         };
1116
1117         if (flags & CMD_ASYNC)
1118                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1119         else
1120                 cmd.meta.flags |= CMD_WANT_SKB;
1121
1122         rc = iwl_send_cmd(priv, &cmd);
1123
1124         if (rc || (flags & CMD_ASYNC))
1125                 return rc;
1126
1127         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1128         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1129                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1130                           res->hdr.flags);
1131                 rc = -EIO;
1132         }
1133
1134         if (rc == 0) {
1135                 switch (res->u.add_sta.status) {
1136                 case ADD_STA_SUCCESS_MSK:
1137                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1138                         break;
1139                 default:
1140                         rc = -EIO;
1141                         IWL_WARNING("REPLY_ADD_STA failed\n");
1142                         break;
1143                 }
1144         }
1145
1146         priv->alloc_rxb_skb--;
1147         dev_kfree_skb_any(cmd.meta.u.skb);
1148
1149         return rc;
1150 }
1151
1152 static int iwl4965_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
1153                                    struct ieee80211_key_conf *keyconf,
1154                                    u8 sta_id)
1155 {
1156         unsigned long flags;
1157         __le16 key_flags = 0;
1158
1159         key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
1160         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1161
1162         if (sta_id == priv->hw_setting.bcast_sta_id)
1163                 key_flags |= STA_KEY_MULTICAST_MSK;
1164
1165         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1166         keyconf->hw_key_idx = keyconf->keyidx;
1167
1168         key_flags &= ~STA_KEY_FLG_INVALID;
1169
1170         spin_lock_irqsave(&priv->sta_lock, flags);
1171         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1172         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1173
1174         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1175                keyconf->keylen);
1176
1177         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1178                keyconf->keylen);
1179
1180         priv->stations[sta_id].sta.key.key_offset
1181                         = (sta_id % STA_KEY_MAX_NUM);/*FIXME*/
1182         priv->stations[sta_id].sta.key.key_flags = key_flags;
1183         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1184         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1185
1186         spin_unlock_irqrestore(&priv->sta_lock, flags);
1187
1188         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1189         return iwl4965_send_add_station(priv,
1190                                 &priv->stations[sta_id].sta, CMD_ASYNC);
1191 }
1192
1193 static int iwl4965_set_tkip_dynamic_key_info(struct iwl_priv *priv,
1194                                    struct ieee80211_key_conf *keyconf,
1195                                    u8 sta_id)
1196 {
1197         unsigned long flags;
1198         int ret = 0;
1199
1200         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1201         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1202         keyconf->hw_key_idx = keyconf->keyidx;
1203
1204         spin_lock_irqsave(&priv->sta_lock, flags);
1205
1206         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1207         priv->stations[sta_id].keyinfo.conf = keyconf;
1208         priv->stations[sta_id].keyinfo.keylen = 16;
1209
1210         /* This copy is acutally not needed: we get the key with each TX */
1211         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
1212
1213         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
1214
1215         spin_unlock_irqrestore(&priv->sta_lock, flags);
1216
1217         return ret;
1218 }
1219
1220 static int iwl4965_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1221 {
1222         unsigned long flags;
1223
1224         spin_lock_irqsave(&priv->sta_lock, flags);
1225         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1226         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1227         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1228         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1229         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1230         spin_unlock_irqrestore(&priv->sta_lock, flags);
1231
1232         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1233         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1234         return 0;
1235 }
1236
1237 static int iwl4965_set_dynamic_key(struct iwl_priv *priv,
1238                                 struct ieee80211_key_conf *key, u8 sta_id)
1239 {
1240         int ret;
1241
1242         switch (key->alg) {
1243         case ALG_CCMP:
1244                 ret = iwl4965_set_ccmp_dynamic_key_info(priv, key, sta_id);
1245                 break;
1246         case ALG_TKIP:
1247                 ret = iwl4965_set_tkip_dynamic_key_info(priv, key, sta_id);
1248                 break;
1249         case ALG_WEP:
1250                 ret = -EOPNOTSUPP;
1251                 break;
1252         default:
1253                 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
1254                 ret = -EINVAL;
1255         }
1256
1257         return ret;
1258 }
1259
1260 static int iwl4965_remove_static_key(struct iwl_priv *priv)
1261 {
1262         int ret = -EOPNOTSUPP;
1263
1264         return ret;
1265 }
1266
1267 static int iwl4965_set_static_key(struct iwl_priv *priv,
1268                                 struct ieee80211_key_conf *key)
1269 {
1270         if (key->alg == ALG_WEP)
1271                 return -EOPNOTSUPP;
1272
1273         IWL_ERROR("Static key invalid: alg %d\n", key->alg);
1274         return -EINVAL;
1275 }
1276
1277 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1278 {
1279         struct list_head *element;
1280
1281         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1282                        priv->frames_count);
1283
1284         while (!list_empty(&priv->free_frames)) {
1285                 element = priv->free_frames.next;
1286                 list_del(element);
1287                 kfree(list_entry(element, struct iwl4965_frame, list));
1288                 priv->frames_count--;
1289         }
1290
1291         if (priv->frames_count) {
1292                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1293                             priv->frames_count);
1294                 priv->frames_count = 0;
1295         }
1296 }
1297
1298 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1299 {
1300         struct iwl4965_frame *frame;
1301         struct list_head *element;
1302         if (list_empty(&priv->free_frames)) {
1303                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1304                 if (!frame) {
1305                         IWL_ERROR("Could not allocate frame!\n");
1306                         return NULL;
1307                 }
1308
1309                 priv->frames_count++;
1310                 return frame;
1311         }
1312
1313         element = priv->free_frames.next;
1314         list_del(element);
1315         return list_entry(element, struct iwl4965_frame, list);
1316 }
1317
1318 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1319 {
1320         memset(frame, 0, sizeof(*frame));
1321         list_add(&frame->list, &priv->free_frames);
1322 }
1323
1324 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1325                                 struct ieee80211_hdr *hdr,
1326                                 const u8 *dest, int left)
1327 {
1328
1329         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1330             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1331              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1332                 return 0;
1333
1334         if (priv->ibss_beacon->len > left)
1335                 return 0;
1336
1337         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1338
1339         return priv->ibss_beacon->len;
1340 }
1341
1342 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1343 {
1344         u8 i;
1345
1346         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1347              i = iwl4965_rates[i].next_ieee) {
1348                 if (rate_mask & (1 << i))
1349                         return iwl4965_rates[i].plcp;
1350         }
1351
1352         return IWL_RATE_INVALID;
1353 }
1354
1355 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1356 {
1357         struct iwl4965_frame *frame;
1358         unsigned int frame_size;
1359         int rc;
1360         u8 rate;
1361
1362         frame = iwl4965_get_free_frame(priv);
1363
1364         if (!frame) {
1365                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1366                           "command.\n");
1367                 return -ENOMEM;
1368         }
1369
1370         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1371                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1372                                                 0xFF0);
1373                 if (rate == IWL_INVALID_RATE)
1374                         rate = IWL_RATE_6M_PLCP;
1375         } else {
1376                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1377                 if (rate == IWL_INVALID_RATE)
1378                         rate = IWL_RATE_1M_PLCP;
1379         }
1380
1381         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1382
1383         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1384                               &frame->u.cmd[0]);
1385
1386         iwl4965_free_frame(priv, frame);
1387
1388         return rc;
1389 }
1390
1391 /******************************************************************************
1392  *
1393  * Misc. internal state and helper functions
1394  *
1395  ******************************************************************************/
1396
1397 static void iwl4965_unset_hw_setting(struct iwl_priv *priv)
1398 {
1399         if (priv->hw_setting.shared_virt)
1400                 pci_free_consistent(priv->pci_dev,
1401                                     sizeof(struct iwl4965_shared),
1402                                     priv->hw_setting.shared_virt,
1403                                     priv->hw_setting.shared_phys);
1404 }
1405
1406 /**
1407  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1408  *
1409  * return : set the bit for each supported rate insert in ie
1410  */
1411 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1412                                     u16 basic_rate, int *left)
1413 {
1414         u16 ret_rates = 0, bit;
1415         int i;
1416         u8 *cnt = ie;
1417         u8 *rates = ie + 1;
1418
1419         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1420                 if (bit & supported_rate) {
1421                         ret_rates |= bit;
1422                         rates[*cnt] = iwl4965_rates[i].ieee |
1423                                 ((bit & basic_rate) ? 0x80 : 0x00);
1424                         (*cnt)++;
1425                         (*left)--;
1426                         if ((*left <= 0) ||
1427                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1428                                 break;
1429                 }
1430         }
1431
1432         return ret_rates;
1433 }
1434
1435 /**
1436  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1437  */
1438 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1439                                   enum ieee80211_band band,
1440                                   struct ieee80211_mgmt *frame,
1441                                   int left, int is_direct)
1442 {
1443         int len = 0;
1444         u8 *pos = NULL;
1445         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1446 #ifdef CONFIG_IWL4965_HT
1447         const struct ieee80211_supported_band *sband =
1448                                                 iwl4965_get_hw_mode(priv, band);
1449 #endif /* CONFIG_IWL4965_HT */
1450
1451         /* Make sure there is enough space for the probe request,
1452          * two mandatory IEs and the data */
1453         left -= 24;
1454         if (left < 0)
1455                 return 0;
1456         len += 24;
1457
1458         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1459         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1460         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1461         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1462         frame->seq_ctrl = 0;
1463
1464         /* fill in our indirect SSID IE */
1465         /* ...next IE... */
1466
1467         left -= 2;
1468         if (left < 0)
1469                 return 0;
1470         len += 2;
1471         pos = &(frame->u.probe_req.variable[0]);
1472         *pos++ = WLAN_EID_SSID;
1473         *pos++ = 0;
1474
1475         /* fill in our direct SSID IE... */
1476         if (is_direct) {
1477                 /* ...next IE... */
1478                 left -= 2 + priv->essid_len;
1479                 if (left < 0)
1480                         return 0;
1481                 /* ... fill it in... */
1482                 *pos++ = WLAN_EID_SSID;
1483                 *pos++ = priv->essid_len;
1484                 memcpy(pos, priv->essid, priv->essid_len);
1485                 pos += priv->essid_len;
1486                 len += 2 + priv->essid_len;
1487         }
1488
1489         /* fill in supported rate */
1490         /* ...next IE... */
1491         left -= 2;
1492         if (left < 0)
1493                 return 0;
1494
1495         /* ... fill it in... */
1496         *pos++ = WLAN_EID_SUPP_RATES;
1497         *pos = 0;
1498
1499         /* exclude 60M rate */
1500         active_rates = priv->rates_mask;
1501         active_rates &= ~IWL_RATE_60M_MASK;
1502
1503         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1504
1505         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1506         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1507                         active_rate_basic, &left);
1508         active_rates &= ~ret_rates;
1509
1510         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1511                                  active_rate_basic, &left);
1512         active_rates &= ~ret_rates;
1513
1514         len += 2 + *pos;
1515         pos += (*pos) + 1;
1516         if (active_rates == 0)
1517                 goto fill_end;
1518
1519         /* fill in supported extended rate */
1520         /* ...next IE... */
1521         left -= 2;
1522         if (left < 0)
1523                 return 0;
1524         /* ... fill it in... */
1525         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1526         *pos = 0;
1527         iwl4965_supported_rate_to_ie(pos, active_rates,
1528                                  active_rate_basic, &left);
1529         if (*pos > 0)
1530                 len += 2 + *pos;
1531
1532 #ifdef CONFIG_IWL4965_HT
1533         if (sband && sband->ht_info.ht_supported) {
1534                 struct ieee80211_ht_cap *ht_cap;
1535                 pos += (*pos) + 1;
1536                 *pos++ = WLAN_EID_HT_CAPABILITY;
1537                 *pos++ = sizeof(struct ieee80211_ht_cap);
1538                 ht_cap = (struct ieee80211_ht_cap *)pos;
1539                 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1540                 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1541                 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1542                                             IEEE80211_HT_CAP_AMPDU_FACTOR) |
1543                                             ((sband->ht_info.ampdu_density << 2) &
1544                                             IEEE80211_HT_CAP_AMPDU_DENSITY);
1545                 len += 2 + sizeof(struct ieee80211_ht_cap);
1546         }
1547 #endif  /*CONFIG_IWL4965_HT */
1548
1549  fill_end:
1550         return (u16)len;
1551 }
1552
1553 /*
1554  * QoS  support
1555 */
1556 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1557                                        struct iwl4965_qosparam_cmd *qos)
1558 {
1559
1560         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1561                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1562 }
1563
1564 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1565 {
1566         unsigned long flags;
1567
1568         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1569                 return;
1570
1571         if (!priv->qos_data.qos_enable)
1572                 return;
1573
1574         spin_lock_irqsave(&priv->lock, flags);
1575         priv->qos_data.def_qos_parm.qos_flags = 0;
1576
1577         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1578             !priv->qos_data.qos_cap.q_AP.txop_request)
1579                 priv->qos_data.def_qos_parm.qos_flags |=
1580                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1581         if (priv->qos_data.qos_active)
1582                 priv->qos_data.def_qos_parm.qos_flags |=
1583                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1584
1585 #ifdef CONFIG_IWL4965_HT
1586         if (priv->current_ht_config.is_ht)
1587                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1588 #endif /* CONFIG_IWL4965_HT */
1589
1590         spin_unlock_irqrestore(&priv->lock, flags);
1591
1592         if (force || iwl4965_is_associated(priv)) {
1593                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1594                                 priv->qos_data.qos_active,
1595                                 priv->qos_data.def_qos_parm.qos_flags);
1596
1597                 iwl4965_send_qos_params_command(priv,
1598                                 &(priv->qos_data.def_qos_parm));
1599         }
1600 }
1601
1602 /*
1603  * Power management (not Tx power!) functions
1604  */
1605 #define MSEC_TO_USEC 1024
1606
1607 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1608 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1609 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1610 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1611                                      __constant_cpu_to_le32(X1), \
1612                                      __constant_cpu_to_le32(X2), \
1613                                      __constant_cpu_to_le32(X3), \
1614                                      __constant_cpu_to_le32(X4)}
1615
1616
1617 /* default power management (not Tx power) table values */
1618 /* for tim  0-10 */
1619 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1620         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1621         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1622         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1623         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1624         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1625         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1626 };
1627
1628 /* for tim > 10 */
1629 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1630         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1631         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1632                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1633         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1634                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1635         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1636                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1637         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1638         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1639                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1640 };
1641
1642 int iwl4965_power_init_handle(struct iwl_priv *priv)
1643 {
1644         int rc = 0, i;
1645         struct iwl4965_power_mgr *pow_data;
1646         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
1647         u16 pci_pm;
1648
1649         IWL_DEBUG_POWER("Initialize power \n");
1650
1651         pow_data = &(priv->power_data);
1652
1653         memset(pow_data, 0, sizeof(*pow_data));
1654
1655         pow_data->active_index = IWL_POWER_RANGE_0;
1656         pow_data->dtim_val = 0xffff;
1657
1658         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1659         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1660
1661         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1662         if (rc != 0)
1663                 return 0;
1664         else {
1665                 struct iwl4965_powertable_cmd *cmd;
1666
1667                 IWL_DEBUG_POWER("adjust power command flags\n");
1668
1669                 for (i = 0; i < IWL_POWER_AC; i++) {
1670                         cmd = &pow_data->pwr_range_0[i].cmd;
1671
1672                         if (pci_pm & 0x1)
1673                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1674                         else
1675                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1676                 }
1677         }
1678         return rc;
1679 }
1680
1681 static int iwl4965_update_power_cmd(struct iwl_priv *priv,
1682                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
1683 {
1684         int rc = 0, i;
1685         u8 skip;
1686         u32 max_sleep = 0;
1687         struct iwl4965_power_vec_entry *range;
1688         u8 period = 0;
1689         struct iwl4965_power_mgr *pow_data;
1690
1691         if (mode > IWL_POWER_INDEX_5) {
1692                 IWL_DEBUG_POWER("Error invalid power mode \n");
1693                 return -1;
1694         }
1695         pow_data = &(priv->power_data);
1696
1697         if (pow_data->active_index == IWL_POWER_RANGE_0)
1698                 range = &pow_data->pwr_range_0[0];
1699         else
1700                 range = &pow_data->pwr_range_1[1];
1701
1702         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
1703
1704 #ifdef IWL_MAC80211_DISABLE
1705         if (priv->assoc_network != NULL) {
1706                 unsigned long flags;
1707
1708                 period = priv->assoc_network->tim.tim_period;
1709         }
1710 #endif  /*IWL_MAC80211_DISABLE */
1711         skip = range[mode].no_dtim;
1712
1713         if (period == 0) {
1714                 period = 1;
1715                 skip = 0;
1716         }
1717
1718         if (skip == 0) {
1719                 max_sleep = period;
1720                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1721         } else {
1722                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1723                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1724                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1725         }
1726
1727         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1728                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1729                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1730         }
1731
1732         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1733         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1734         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1735         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1736                         le32_to_cpu(cmd->sleep_interval[0]),
1737                         le32_to_cpu(cmd->sleep_interval[1]),
1738                         le32_to_cpu(cmd->sleep_interval[2]),
1739                         le32_to_cpu(cmd->sleep_interval[3]),
1740                         le32_to_cpu(cmd->sleep_interval[4]));
1741
1742         return rc;
1743 }
1744
1745 static int iwl4965_send_power_mode(struct iwl_priv *priv, u32 mode)
1746 {
1747         u32 uninitialized_var(final_mode);
1748         int rc;
1749         struct iwl4965_powertable_cmd cmd;
1750
1751         /* If on battery, set to 3,
1752          * if plugged into AC power, set to CAM ("continuously aware mode"),
1753          * else user level */
1754         switch (mode) {
1755         case IWL_POWER_BATTERY:
1756                 final_mode = IWL_POWER_INDEX_3;
1757                 break;
1758         case IWL_POWER_AC:
1759                 final_mode = IWL_POWER_MODE_CAM;
1760                 break;
1761         default:
1762                 final_mode = mode;
1763                 break;
1764         }
1765
1766         cmd.keep_alive_beacons = 0;
1767
1768         iwl4965_update_power_cmd(priv, &cmd, final_mode);
1769
1770         rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
1771
1772         if (final_mode == IWL_POWER_MODE_CAM)
1773                 clear_bit(STATUS_POWER_PMI, &priv->status);
1774         else
1775                 set_bit(STATUS_POWER_PMI, &priv->status);
1776
1777         return rc;
1778 }
1779
1780 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1781 {
1782         /* Filter incoming packets to determine if they are targeted toward
1783          * this network, discarding packets coming from ourselves */
1784         switch (priv->iw_mode) {
1785         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
1786                 /* packets from our adapter are dropped (echo) */
1787                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1788                         return 0;
1789                 /* {broad,multi}cast packets to our IBSS go through */
1790                 if (is_multicast_ether_addr(header->addr1))
1791                         return !compare_ether_addr(header->addr3, priv->bssid);
1792                 /* packets to our adapter go through */
1793                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1794         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1795                 /* packets from our adapter are dropped (echo) */
1796                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1797                         return 0;
1798                 /* {broad,multi}cast packets to our BSS go through */
1799                 if (is_multicast_ether_addr(header->addr1))
1800                         return !compare_ether_addr(header->addr2, priv->bssid);
1801                 /* packets to our adapter go through */
1802                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1803         }
1804
1805         return 1;
1806 }
1807
1808 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1809
1810 static const char *iwl4965_get_tx_fail_reason(u32 status)
1811 {
1812         switch (status & TX_STATUS_MSK) {
1813         case TX_STATUS_SUCCESS:
1814                 return "SUCCESS";
1815                 TX_STATUS_ENTRY(SHORT_LIMIT);
1816                 TX_STATUS_ENTRY(LONG_LIMIT);
1817                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1818                 TX_STATUS_ENTRY(MGMNT_ABORT);
1819                 TX_STATUS_ENTRY(NEXT_FRAG);
1820                 TX_STATUS_ENTRY(LIFE_EXPIRE);
1821                 TX_STATUS_ENTRY(DEST_PS);
1822                 TX_STATUS_ENTRY(ABORTED);
1823                 TX_STATUS_ENTRY(BT_RETRY);
1824                 TX_STATUS_ENTRY(STA_INVALID);
1825                 TX_STATUS_ENTRY(FRAG_DROPPED);
1826                 TX_STATUS_ENTRY(TID_DISABLE);
1827                 TX_STATUS_ENTRY(FRAME_FLUSHED);
1828                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1829                 TX_STATUS_ENTRY(TX_LOCKED);
1830                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1831         }
1832
1833         return "UNKNOWN";
1834 }
1835
1836 /**
1837  * iwl4965_scan_cancel - Cancel any currently executing HW scan
1838  *
1839  * NOTE: priv->mutex is not required before calling this function
1840  */
1841 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1842 {
1843         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1844                 clear_bit(STATUS_SCANNING, &priv->status);
1845                 return 0;
1846         }
1847
1848         if (test_bit(STATUS_SCANNING, &priv->status)) {
1849                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1850                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1851                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1852                         queue_work(priv->workqueue, &priv->abort_scan);
1853
1854                 } else
1855                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1856
1857                 return test_bit(STATUS_SCANNING, &priv->status);
1858         }
1859
1860         return 0;
1861 }
1862
1863 /**
1864  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1865  * @ms: amount of time to wait (in milliseconds) for scan to abort
1866  *
1867  * NOTE: priv->mutex must be held before calling this function
1868  */
1869 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1870 {
1871         unsigned long now = jiffies;
1872         int ret;
1873
1874         ret = iwl4965_scan_cancel(priv);
1875         if (ret && ms) {
1876                 mutex_unlock(&priv->mutex);
1877                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1878                                 test_bit(STATUS_SCANNING, &priv->status))
1879                         msleep(1);
1880                 mutex_lock(&priv->mutex);
1881
1882                 return test_bit(STATUS_SCANNING, &priv->status);
1883         }
1884
1885         return ret;
1886 }
1887
1888 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1889 {
1890         /* Reset ieee stats */
1891
1892         /* We don't reset the net_device_stats (ieee->stats) on
1893          * re-association */
1894
1895         priv->last_seq_num = -1;
1896         priv->last_frag_num = -1;
1897         priv->last_packet_time = 0;
1898
1899         iwl4965_scan_cancel(priv);
1900 }
1901
1902 #define MAX_UCODE_BEACON_INTERVAL       4096
1903 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1904
1905 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1906 {
1907         u16 new_val = 0;
1908         u16 beacon_factor = 0;
1909
1910         beacon_factor =
1911             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1912                 / MAX_UCODE_BEACON_INTERVAL;
1913         new_val = beacon_val / beacon_factor;
1914
1915         return cpu_to_le16(new_val);
1916 }
1917
1918 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1919 {
1920         u64 interval_tm_unit;
1921         u64 tsf, result;
1922         unsigned long flags;
1923         struct ieee80211_conf *conf = NULL;
1924         u16 beacon_int = 0;
1925
1926         conf = ieee80211_get_hw_conf(priv->hw);
1927
1928         spin_lock_irqsave(&priv->lock, flags);
1929         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
1930         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
1931
1932         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1933
1934         tsf = priv->timestamp1;
1935         tsf = ((tsf << 32) | priv->timestamp0);
1936
1937         beacon_int = priv->beacon_int;
1938         spin_unlock_irqrestore(&priv->lock, flags);
1939
1940         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1941                 if (beacon_int == 0) {
1942                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1943                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1944                 } else {
1945                         priv->rxon_timing.beacon_interval =
1946                                 cpu_to_le16(beacon_int);
1947                         priv->rxon_timing.beacon_interval =
1948                             iwl4965_adjust_beacon_interval(
1949                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1950                 }
1951
1952                 priv->rxon_timing.atim_window = 0;
1953         } else {
1954                 priv->rxon_timing.beacon_interval =
1955                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1956                 /* TODO: we need to get atim_window from upper stack
1957                  * for now we set to 0 */
1958                 priv->rxon_timing.atim_window = 0;
1959         }
1960
1961         interval_tm_unit =
1962                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1963         result = do_div(tsf, interval_tm_unit);
1964         priv->rxon_timing.beacon_init_val =
1965             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1966
1967         IWL_DEBUG_ASSOC
1968             ("beacon interval %d beacon timer %d beacon tim %d\n",
1969                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1970                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1971                 le16_to_cpu(priv->rxon_timing.atim_window));
1972 }
1973
1974 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1975 {
1976         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1977                 IWL_ERROR("APs don't scan.\n");
1978                 return 0;
1979         }
1980
1981         if (!iwl4965_is_ready_rf(priv)) {
1982                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1983                 return -EIO;
1984         }
1985
1986         if (test_bit(STATUS_SCANNING, &priv->status)) {
1987                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1988                 return -EAGAIN;
1989         }
1990
1991         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1992                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1993                                "Queuing.\n");
1994                 return -EAGAIN;
1995         }
1996
1997         IWL_DEBUG_INFO("Starting scan...\n");
1998         priv->scan_bands = 2;
1999         set_bit(STATUS_SCANNING, &priv->status);
2000         priv->scan_start = jiffies;
2001         priv->scan_pass_start = priv->scan_start;
2002
2003         queue_work(priv->workqueue, &priv->request_scan);
2004
2005         return 0;
2006 }
2007
2008
2009 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
2010                                           enum ieee80211_band band)
2011 {
2012         if (band == IEEE80211_BAND_5GHZ) {
2013                 priv->staging_rxon.flags &=
2014                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2015                       | RXON_FLG_CCK_MSK);
2016                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2017         } else {
2018                 /* Copied from iwl4965_bg_post_associate() */
2019                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2020                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2021                 else
2022                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2023
2024                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2025                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2026
2027                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2028                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2029                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2030         }
2031 }
2032
2033 /*
2034  * initialize rxon structure with default values from eeprom
2035  */
2036 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
2037 {
2038         const struct iwl_channel_info *ch_info;
2039
2040         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2041
2042         switch (priv->iw_mode) {
2043         case IEEE80211_IF_TYPE_AP:
2044                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2045                 break;
2046
2047         case IEEE80211_IF_TYPE_STA:
2048                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2049                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2050                 break;
2051
2052         case IEEE80211_IF_TYPE_IBSS:
2053                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2054                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2055                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2056                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2057                 break;
2058
2059         case IEEE80211_IF_TYPE_MNTR:
2060                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2061                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2062                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2063                 break;
2064         }
2065
2066 #if 0
2067         /* TODO:  Figure out when short_preamble would be set and cache from
2068          * that */
2069         if (!hw_to_local(priv->hw)->short_preamble)
2070                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2071         else
2072                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2073 #endif
2074
2075         ch_info = iwl_get_channel_info(priv, priv->band,
2076                                        le16_to_cpu(priv->staging_rxon.channel));
2077
2078         if (!ch_info)
2079                 ch_info = &priv->channel_info[0];
2080
2081         /*
2082          * in some case A channels are all non IBSS
2083          * in this case force B/G channel
2084          */
2085         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2086             !(is_channel_ibss(ch_info)))
2087                 ch_info = &priv->channel_info[0];
2088
2089         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2090         priv->band = ch_info->band;
2091
2092         iwl4965_set_flags_for_phymode(priv, priv->band);
2093
2094         priv->staging_rxon.ofdm_basic_rates =
2095             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2096         priv->staging_rxon.cck_basic_rates =
2097             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2098
2099         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2100                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2101         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2102         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2103         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2104         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2105         iwl4965_set_rxon_chain(priv);
2106 }
2107
2108 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
2109 {
2110         if (mode == IEEE80211_IF_TYPE_IBSS) {
2111                 const struct iwl_channel_info *ch_info;
2112
2113                 ch_info = iwl_get_channel_info(priv,
2114                         priv->band,
2115                         le16_to_cpu(priv->staging_rxon.channel));
2116
2117                 if (!ch_info || !is_channel_ibss(ch_info)) {
2118                         IWL_ERROR("channel %d not IBSS channel\n",
2119                                   le16_to_cpu(priv->staging_rxon.channel));
2120                         return -EINVAL;
2121                 }
2122         }
2123
2124         priv->iw_mode = mode;
2125
2126         iwl4965_connection_init_rx_config(priv);
2127         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2128
2129         iwlcore_clear_stations_table(priv);
2130
2131         /* dont commit rxon if rf-kill is on*/
2132         if (!iwl4965_is_ready_rf(priv))
2133                 return -EAGAIN;
2134
2135         cancel_delayed_work(&priv->scan_check);
2136         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2137                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2138                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2139                 return -EAGAIN;
2140         }
2141
2142         iwl4965_commit_rxon(priv);
2143
2144         return 0;
2145 }
2146
2147 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2148                                       struct ieee80211_tx_control *ctl,
2149                                       struct iwl_cmd *cmd,
2150                                       struct sk_buff *skb_frag,
2151                                       int sta_id)
2152 {
2153         struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
2154
2155         switch (keyinfo->alg) {
2156         case ALG_CCMP:
2157                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2158                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2159                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2160                         cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
2161                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2162                 break;
2163
2164         case ALG_TKIP:
2165                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2166                 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
2167                         IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
2168                 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
2169                 break;
2170
2171         case ALG_WEP:
2172                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2173                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2174
2175                 if (keyinfo->keylen == 13)
2176                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2177
2178                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2179
2180                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2181                              "with key %d\n", ctl->key_idx);
2182                 break;
2183
2184         default:
2185                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2186                 break;
2187         }
2188 }
2189
2190 /*
2191  * handle build REPLY_TX command notification.
2192  */
2193 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
2194                                   struct iwl_cmd *cmd,
2195                                   struct ieee80211_tx_control *ctrl,
2196                                   struct ieee80211_hdr *hdr,
2197                                   int is_unicast, u8 std_id)
2198 {
2199         __le16 *qc;
2200         u16 fc = le16_to_cpu(hdr->frame_control);
2201         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2202
2203         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2204         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2205                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2206                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2207                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2208                 if (ieee80211_is_probe_response(fc) &&
2209                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2210                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2211         } else {
2212                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2213                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2214         }
2215
2216         if (ieee80211_is_back_request(fc))
2217                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2218
2219
2220         cmd->cmd.tx.sta_id = std_id;
2221         if (ieee80211_get_morefrag(hdr))
2222                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2223
2224         qc = ieee80211_get_qos_ctrl(hdr);
2225         if (qc) {
2226                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2227                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2228         } else
2229                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2230
2231         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2232                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2233                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2234         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2235                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2236                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2237         }
2238
2239         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2240                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2241
2242         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2243         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2244                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2245                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2246                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2247                 else
2248                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2249         } else
2250                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2251
2252         cmd->cmd.tx.driver_txop = 0;
2253         cmd->cmd.tx.tx_flags = tx_flags;
2254         cmd->cmd.tx.next_frame_len = 0;
2255 }
2256 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2257 {
2258         /* 0 - mgmt, 1 - cnt, 2 - data */
2259         int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2260         priv->tx_stats[idx].cnt++;
2261         priv->tx_stats[idx].bytes += len;
2262 }
2263 /**
2264  * iwl4965_get_sta_id - Find station's index within station table
2265  *
2266  * If new IBSS station, create new entry in station table
2267  */
2268 static int iwl4965_get_sta_id(struct iwl_priv *priv,
2269                                 struct ieee80211_hdr *hdr)
2270 {
2271         int sta_id;
2272         u16 fc = le16_to_cpu(hdr->frame_control);
2273         DECLARE_MAC_BUF(mac);
2274
2275         /* If this frame is broadcast or management, use broadcast station id */
2276         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2277             is_multicast_ether_addr(hdr->addr1))
2278                 return priv->hw_setting.bcast_sta_id;
2279
2280         switch (priv->iw_mode) {
2281
2282         /* If we are a client station in a BSS network, use the special
2283          * AP station entry (that's the only station we communicate with) */
2284         case IEEE80211_IF_TYPE_STA:
2285                 return IWL_AP_ID;
2286
2287         /* If we are an AP, then find the station, or use BCAST */
2288         case IEEE80211_IF_TYPE_AP:
2289                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2290                 if (sta_id != IWL_INVALID_STATION)
2291                         return sta_id;
2292                 return priv->hw_setting.bcast_sta_id;
2293
2294         /* If this frame is going out to an IBSS network, find the station,
2295          * or create a new station table entry */
2296         case IEEE80211_IF_TYPE_IBSS:
2297                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2298                 if (sta_id != IWL_INVALID_STATION)
2299                         return sta_id;
2300
2301                 /* Create new station table entry */
2302                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2303                                                    0, CMD_ASYNC, NULL);
2304
2305                 if (sta_id != IWL_INVALID_STATION)
2306                         return sta_id;
2307
2308                 IWL_DEBUG_DROP("Station %s not in station map. "
2309                                "Defaulting to broadcast...\n",
2310                                print_mac(mac, hdr->addr1));
2311                 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2312                 return priv->hw_setting.bcast_sta_id;
2313
2314         default:
2315                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2316                 return priv->hw_setting.bcast_sta_id;
2317         }
2318 }
2319
2320 /*
2321  * start REPLY_TX command process
2322  */
2323 static int iwl4965_tx_skb(struct iwl_priv *priv,
2324                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2325 {
2326         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2327         struct iwl4965_tfd_frame *tfd;
2328         u32 *control_flags;
2329         int txq_id = ctl->queue;
2330         struct iwl4965_tx_queue *txq = NULL;
2331         struct iwl4965_queue *q = NULL;
2332         dma_addr_t phys_addr;
2333         dma_addr_t txcmd_phys;
2334         dma_addr_t scratch_phys;
2335         struct iwl_cmd *out_cmd = NULL;
2336         u16 len, idx, len_org;
2337         u8 id, hdr_len, unicast;
2338         u8 sta_id;
2339         u16 seq_number = 0;
2340         u16 fc;
2341         __le16 *qc;
2342         u8 wait_write_ptr = 0;
2343         unsigned long flags;
2344         int rc;
2345
2346         spin_lock_irqsave(&priv->lock, flags);
2347         if (iwl4965_is_rfkill(priv)) {
2348                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2349                 goto drop_unlock;
2350         }
2351
2352         if (!priv->vif) {
2353                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2354                 goto drop_unlock;
2355         }
2356
2357         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2358                 IWL_ERROR("ERROR: No TX rate available.\n");
2359                 goto drop_unlock;
2360         }
2361
2362         unicast = !is_multicast_ether_addr(hdr->addr1);
2363         id = 0;
2364
2365         fc = le16_to_cpu(hdr->frame_control);
2366
2367 #ifdef CONFIG_IWLWIFI_DEBUG
2368         if (ieee80211_is_auth(fc))
2369                 IWL_DEBUG_TX("Sending AUTH frame\n");
2370         else if (ieee80211_is_assoc_request(fc))
2371                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2372         else if (ieee80211_is_reassoc_request(fc))
2373                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2374 #endif
2375
2376         /* drop all data frame if we are not associated */
2377         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2378            (!iwl4965_is_associated(priv) ||
2379             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2380             !priv->assoc_station_added)) {
2381                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2382                 goto drop_unlock;
2383         }
2384
2385         spin_unlock_irqrestore(&priv->lock, flags);
2386
2387         hdr_len = ieee80211_get_hdrlen(fc);
2388
2389         /* Find (or create) index into station table for destination station */
2390         sta_id = iwl4965_get_sta_id(priv, hdr);
2391         if (sta_id == IWL_INVALID_STATION) {
2392                 DECLARE_MAC_BUF(mac);
2393
2394                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2395                                print_mac(mac, hdr->addr1));
2396                 goto drop;
2397         }
2398
2399         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2400
2401         qc = ieee80211_get_qos_ctrl(hdr);
2402         if (qc) {
2403                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2404                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2405                                 IEEE80211_SCTL_SEQ;
2406                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2407                         (hdr->seq_ctrl &
2408                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2409                 seq_number += 0x10;
2410 #ifdef CONFIG_IWL4965_HT
2411                 /* aggregation is on for this <sta,tid> */
2412                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2413                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2414                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2415 #endif /* CONFIG_IWL4965_HT */
2416         }
2417
2418         /* Descriptor for chosen Tx queue */
2419         txq = &priv->txq[txq_id];
2420         q = &txq->q;
2421
2422         spin_lock_irqsave(&priv->lock, flags);
2423
2424         /* Set up first empty TFD within this queue's circular TFD buffer */
2425         tfd = &txq->bd[q->write_ptr];
2426         memset(tfd, 0, sizeof(*tfd));
2427         control_flags = (u32 *) tfd;
2428         idx = get_cmd_index(q, q->write_ptr, 0);
2429
2430         /* Set up driver data for this TFD */
2431         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2432         txq->txb[q->write_ptr].skb[0] = skb;
2433         memcpy(&(txq->txb[q->write_ptr].status.control),
2434                ctl, sizeof(struct ieee80211_tx_control));
2435
2436         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2437         out_cmd = &txq->cmd[idx];
2438         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2439         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2440
2441         /*
2442          * Set up the Tx-command (not MAC!) header.
2443          * Store the chosen Tx queue and TFD index within the sequence field;
2444          * after Tx, uCode's Tx response will return this value so driver can
2445          * locate the frame within the tx queue and do post-tx processing.
2446          */
2447         out_cmd->hdr.cmd = REPLY_TX;
2448         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2449                                 INDEX_TO_SEQ(q->write_ptr)));
2450
2451         /* Copy MAC header from skb into command buffer */
2452         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2453
2454         /*
2455          * Use the first empty entry in this queue's command buffer array
2456          * to contain the Tx command and MAC header concatenated together
2457          * (payload data will be in another buffer).
2458          * Size of this varies, due to varying MAC header length.
2459          * If end is not dword aligned, we'll have 2 extra bytes at the end
2460          * of the MAC header (device reads on dword boundaries).
2461          * We'll tell device about this padding later.
2462          */
2463         len = priv->hw_setting.tx_cmd_len +
2464                 sizeof(struct iwl_cmd_header) + hdr_len;
2465
2466         len_org = len;
2467         len = (len + 3) & ~3;
2468
2469         if (len_org != len)
2470                 len_org = 1;
2471         else
2472                 len_org = 0;
2473
2474         /* Physical address of this Tx command's header (not MAC header!),
2475          * within command buffer array. */
2476         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2477                      offsetof(struct iwl_cmd, hdr);
2478
2479         /* Add buffer containing Tx command and MAC(!) header to TFD's
2480          * first entry */
2481         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2482
2483         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2484                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
2485
2486         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2487          * if any (802.11 null frames have no payload). */
2488         len = skb->len - hdr_len;
2489         if (len) {
2490                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2491                                            len, PCI_DMA_TODEVICE);
2492                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2493         }
2494
2495         /* Tell 4965 about any 2-byte padding after MAC header */
2496         if (len_org)
2497                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2498
2499         /* Total # bytes to be transmitted */
2500         len = (u16)skb->len;
2501         out_cmd->cmd.tx.len = cpu_to_le16(len);
2502
2503         /* TODO need this for burst mode later on */
2504         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2505
2506         /* set is_hcca to 0; it probably will never be implemented */
2507         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2508
2509         iwl_update_tx_stats(priv, fc, len);
2510
2511         scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
2512                 offsetof(struct iwl4965_tx_cmd, scratch);
2513         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2514         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2515
2516         if (!ieee80211_get_morefrag(hdr)) {
2517                 txq->need_update = 1;
2518                 if (qc) {
2519                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2520                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2521                 }
2522         } else {
2523                 wait_write_ptr = 1;
2524                 txq->need_update = 0;
2525         }
2526
2527         iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2528                            sizeof(out_cmd->cmd.tx));
2529
2530         iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2531                            ieee80211_get_hdrlen(fc));
2532
2533         /* Set up entry for this TFD in Tx byte-count array */
2534         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2535
2536         /* Tell device the write index *just past* this latest filled TFD */
2537         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2538         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2539         spin_unlock_irqrestore(&priv->lock, flags);
2540
2541         if (rc)
2542                 return rc;
2543
2544         if ((iwl4965_queue_space(q) < q->high_mark)
2545             && priv->mac80211_registered) {
2546                 if (wait_write_ptr) {
2547                         spin_lock_irqsave(&priv->lock, flags);
2548                         txq->need_update = 1;
2549                         iwl4965_tx_queue_update_write_ptr(priv, txq);
2550                         spin_unlock_irqrestore(&priv->lock, flags);
2551                 }
2552
2553                 ieee80211_stop_queue(priv->hw, ctl->queue);
2554         }
2555
2556         return 0;
2557
2558 drop_unlock:
2559         spin_unlock_irqrestore(&priv->lock, flags);
2560 drop:
2561         return -1;
2562 }
2563
2564 static void iwl4965_set_rate(struct iwl_priv *priv)
2565 {
2566         const struct ieee80211_supported_band *hw = NULL;
2567         struct ieee80211_rate *rate;
2568         int i;
2569
2570         hw = iwl4965_get_hw_mode(priv, priv->band);
2571         if (!hw) {
2572                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2573                 return;
2574         }
2575
2576         priv->active_rate = 0;
2577         priv->active_rate_basic = 0;
2578
2579         for (i = 0; i < hw->n_bitrates; i++) {
2580                 rate = &(hw->bitrates[i]);
2581                 if (rate->hw_value < IWL_RATE_COUNT)
2582                         priv->active_rate |= (1 << rate->hw_value);
2583         }
2584
2585         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2586                        priv->active_rate, priv->active_rate_basic);
2587
2588         /*
2589          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2590          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2591          * OFDM
2592          */
2593         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2594                 priv->staging_rxon.cck_basic_rates =
2595                     ((priv->active_rate_basic &
2596                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2597         else
2598                 priv->staging_rxon.cck_basic_rates =
2599                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2600
2601         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2602                 priv->staging_rxon.ofdm_basic_rates =
2603                     ((priv->active_rate_basic &
2604                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2605                       IWL_FIRST_OFDM_RATE) & 0xFF;
2606         else
2607                 priv->staging_rxon.ofdm_basic_rates =
2608                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2609 }
2610
2611 static void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2612 {
2613         unsigned long flags;
2614
2615         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2616                 return;
2617
2618         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2619                           disable_radio ? "OFF" : "ON");
2620
2621         if (disable_radio) {
2622                 iwl4965_scan_cancel(priv);
2623                 /* FIXME: This is a workaround for AP */
2624                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2625                         spin_lock_irqsave(&priv->lock, flags);
2626                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
2627                                     CSR_UCODE_SW_BIT_RFKILL);
2628                         spin_unlock_irqrestore(&priv->lock, flags);
2629                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2630                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2631                 }
2632                 return;
2633         }
2634
2635         spin_lock_irqsave(&priv->lock, flags);
2636         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2637
2638         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2639         spin_unlock_irqrestore(&priv->lock, flags);
2640
2641         /* wake up ucode */
2642         msleep(10);
2643
2644         spin_lock_irqsave(&priv->lock, flags);
2645         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
2646         if (!iwl4965_grab_nic_access(priv))
2647                 iwl4965_release_nic_access(priv);
2648         spin_unlock_irqrestore(&priv->lock, flags);
2649
2650         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2651                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2652                                   "disabled by HW switch\n");
2653                 return;
2654         }
2655
2656         queue_work(priv->workqueue, &priv->restart);
2657         return;
2658 }
2659
2660 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2661                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2662 {
2663         u16 fc =
2664             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2665
2666         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2667                 return;
2668
2669         if (!(fc & IEEE80211_FCTL_PROTECTED))
2670                 return;
2671
2672         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2673         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2674         case RX_RES_STATUS_SEC_TYPE_TKIP:
2675                 /* The uCode has got a bad phase 1 Key, pushes the packet.
2676                  * Decryption will be done in SW. */
2677                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2678                     RX_RES_STATUS_BAD_KEY_TTAK)
2679                         break;
2680
2681                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2682                     RX_RES_STATUS_BAD_ICV_MIC)
2683                         stats->flag |= RX_FLAG_MMIC_ERROR;
2684         case RX_RES_STATUS_SEC_TYPE_WEP:
2685         case RX_RES_STATUS_SEC_TYPE_CCMP:
2686                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2687                     RX_RES_STATUS_DECRYPT_OK) {
2688                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2689                         stats->flag |= RX_FLAG_DECRYPTED;
2690                 }
2691                 break;
2692
2693         default:
2694                 break;
2695         }
2696 }
2697
2698
2699 #define IWL_PACKET_RETRY_TIME HZ
2700
2701 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2702 {
2703         u16 sc = le16_to_cpu(header->seq_ctrl);
2704         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2705         u16 frag = sc & IEEE80211_SCTL_FRAG;
2706         u16 *last_seq, *last_frag;
2707         unsigned long *last_time;
2708
2709         switch (priv->iw_mode) {
2710         case IEEE80211_IF_TYPE_IBSS:{
2711                 struct list_head *p;
2712                 struct iwl4965_ibss_seq *entry = NULL;
2713                 u8 *mac = header->addr2;
2714                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2715
2716                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2717                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
2718                         if (!compare_ether_addr(entry->mac, mac))
2719                                 break;
2720                 }
2721                 if (p == &priv->ibss_mac_hash[index]) {
2722                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2723                         if (!entry) {
2724                                 IWL_ERROR("Cannot malloc new mac entry\n");
2725                                 return 0;
2726                         }
2727                         memcpy(entry->mac, mac, ETH_ALEN);
2728                         entry->seq_num = seq;
2729                         entry->frag_num = frag;
2730                         entry->packet_time = jiffies;
2731                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2732                         return 0;
2733                 }
2734                 last_seq = &entry->seq_num;
2735                 last_frag = &entry->frag_num;
2736                 last_time = &entry->packet_time;
2737                 break;
2738         }
2739         case IEEE80211_IF_TYPE_STA:
2740                 last_seq = &priv->last_seq_num;
2741                 last_frag = &priv->last_frag_num;
2742                 last_time = &priv->last_packet_time;
2743                 break;
2744         default:
2745                 return 0;
2746         }
2747         if ((*last_seq == seq) &&
2748             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2749                 if (*last_frag == frag)
2750                         goto drop;
2751                 if (*last_frag + 1 != frag)
2752                         /* out-of-order fragment */
2753                         goto drop;
2754         } else
2755                 *last_seq = seq;
2756
2757         *last_frag = frag;
2758         *last_time = jiffies;
2759         return 0;
2760
2761  drop:
2762         return 1;
2763 }
2764
2765 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2766
2767 #include "iwl-spectrum.h"
2768
2769 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2770 #define BEACON_TIME_MASK_HIGH   0xFF000000
2771 #define TIME_UNIT               1024
2772
2773 /*
2774  * extended beacon time format
2775  * time in usec will be changed into a 32-bit value in 8:24 format
2776  * the high 1 byte is the beacon counts
2777  * the lower 3 bytes is the time in usec within one beacon interval
2778  */
2779
2780 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2781 {
2782         u32 quot;
2783         u32 rem;
2784         u32 interval = beacon_interval * 1024;
2785
2786         if (!interval || !usec)
2787                 return 0;
2788
2789         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2790         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2791
2792         return (quot << 24) + rem;
2793 }
2794
2795 /* base is usually what we get from ucode with each received frame,
2796  * the same as HW timer counter counting down
2797  */
2798
2799 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2800 {
2801         u32 base_low = base & BEACON_TIME_MASK_LOW;
2802         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2803         u32 interval = beacon_interval * TIME_UNIT;
2804         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2805             (addon & BEACON_TIME_MASK_HIGH);
2806
2807         if (base_low > addon_low)
2808                 res += base_low - addon_low;
2809         else if (base_low < addon_low) {
2810                 res += interval + base_low - addon_low;
2811                 res += (1 << 24);
2812         } else
2813                 res += (1 << 24);
2814
2815         return cpu_to_le32(res);
2816 }
2817
2818 static int iwl4965_get_measurement(struct iwl_priv *priv,
2819                                struct ieee80211_measurement_params *params,
2820                                u8 type)
2821 {
2822         struct iwl4965_spectrum_cmd spectrum;
2823         struct iwl4965_rx_packet *res;
2824         struct iwl_host_cmd cmd = {
2825                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2826                 .data = (void *)&spectrum,
2827                 .meta.flags = CMD_WANT_SKB,
2828         };
2829         u32 add_time = le64_to_cpu(params->start_time);
2830         int rc;
2831         int spectrum_resp_status;
2832         int duration = le16_to_cpu(params->duration);
2833
2834         if (iwl4965_is_associated(priv))
2835                 add_time =
2836                     iwl4965_usecs_to_beacons(
2837                         le64_to_cpu(params->start_time) - priv->last_tsf,
2838                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2839
2840         memset(&spectrum, 0, sizeof(spectrum));
2841
2842         spectrum.channel_count = cpu_to_le16(1);
2843         spectrum.flags =
2844             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2845         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2846         cmd.len = sizeof(spectrum);
2847         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2848
2849         if (iwl4965_is_associated(priv))
2850                 spectrum.start_time =
2851                     iwl4965_add_beacon_time(priv->last_beacon_time,
2852                                 add_time,
2853                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2854         else
2855                 spectrum.start_time = 0;
2856
2857         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2858         spectrum.channels[0].channel = params->channel;
2859         spectrum.channels[0].type = type;
2860         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2861                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2862                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2863
2864         rc = iwl_send_cmd_sync(priv, &cmd);
2865         if (rc)
2866                 return rc;
2867
2868         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2869         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2870                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2871                 rc = -EIO;
2872         }
2873
2874         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2875         switch (spectrum_resp_status) {
2876         case 0:         /* Command will be handled */
2877                 if (res->u.spectrum.id != 0xff) {
2878                         IWL_DEBUG_INFO
2879                             ("Replaced existing measurement: %d\n",
2880                              res->u.spectrum.id);
2881                         priv->measurement_status &= ~MEASUREMENT_READY;
2882                 }
2883                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2884                 rc = 0;
2885                 break;
2886
2887         case 1:         /* Command will not be handled */
2888                 rc = -EAGAIN;
2889                 break;
2890         }
2891
2892         dev_kfree_skb_any(cmd.meta.u.skb);
2893
2894         return rc;
2895 }
2896 #endif
2897
2898 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2899                                  struct iwl4965_tx_info *tx_sta)
2900 {
2901
2902         tx_sta->status.ack_signal = 0;
2903         tx_sta->status.excessive_retries = 0;
2904         tx_sta->status.queue_length = 0;
2905         tx_sta->status.queue_number = 0;
2906
2907         if (in_interrupt())
2908                 ieee80211_tx_status_irqsafe(priv->hw,
2909                                             tx_sta->skb[0], &(tx_sta->status));
2910         else
2911                 ieee80211_tx_status(priv->hw,
2912                                     tx_sta->skb[0], &(tx_sta->status));
2913
2914         tx_sta->skb[0] = NULL;
2915 }
2916
2917 /**
2918  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2919  *
2920  * When FW advances 'R' index, all entries between old and new 'R' index
2921  * need to be reclaimed. As result, some free space forms.  If there is
2922  * enough free space (> low mark), wake the stack that feeds us.
2923  */
2924 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2925 {
2926         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2927         struct iwl4965_queue *q = &txq->q;
2928         int nfreed = 0;
2929
2930         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2931                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2932                           "is out of range [0-%d] %d %d.\n", txq_id,
2933                           index, q->n_bd, q->write_ptr, q->read_ptr);
2934                 return 0;
2935         }
2936
2937         for (index = iwl_queue_inc_wrap(index, q->n_bd);
2938                 q->read_ptr != index;
2939                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2940                 if (txq_id != IWL_CMD_QUEUE_NUM) {
2941                         iwl4965_txstatus_to_ieee(priv,
2942                                         &(txq->txb[txq->q.read_ptr]));
2943                         iwl4965_hw_txq_free_tfd(priv, txq);
2944                 } else if (nfreed > 1) {
2945                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2946                                         q->write_ptr, q->read_ptr);
2947                         queue_work(priv->workqueue, &priv->restart);
2948                 }
2949                 nfreed++;
2950         }
2951
2952 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2953                         (txq_id != IWL_CMD_QUEUE_NUM) &&
2954                         priv->mac80211_registered)
2955                 ieee80211_wake_queue(priv->hw, txq_id); */
2956
2957
2958         return nfreed;
2959 }
2960
2961 static int iwl4965_is_tx_success(u32 status)
2962 {
2963         status &= TX_STATUS_MSK;
2964         return (status == TX_STATUS_SUCCESS)
2965             || (status == TX_STATUS_DIRECT_DONE);
2966 }
2967
2968 /******************************************************************************
2969  *
2970  * Generic RX handler implementations
2971  *
2972  ******************************************************************************/
2973 #ifdef CONFIG_IWL4965_HT
2974
2975 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2976                                     struct ieee80211_hdr *hdr)
2977 {
2978         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2979                 return IWL_AP_ID;
2980         else {
2981                 u8 *da = ieee80211_get_DA(hdr);
2982                 return iwl4965_hw_find_station(priv, da);
2983         }
2984 }
2985
2986 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2987         struct iwl_priv *priv, int txq_id, int idx)
2988 {
2989         if (priv->txq[txq_id].txb[idx].skb[0])
2990                 return (struct ieee80211_hdr *)priv->txq[txq_id].
2991                                 txb[idx].skb[0]->data;
2992         return NULL;
2993 }
2994
2995 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2996 {
2997         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2998                                 tx_resp->frame_count);
2999         return le32_to_cpu(*scd_ssn) & MAX_SN;
3000
3001 }
3002
3003 /**
3004  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3005  */
3006 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3007                                       struct iwl4965_ht_agg *agg,
3008                                       struct iwl4965_tx_resp_agg *tx_resp,
3009                                       u16 start_idx)
3010 {
3011         u16 status;
3012         struct agg_tx_status *frame_status = &tx_resp->status;
3013         struct ieee80211_tx_status *tx_status = NULL;
3014         struct ieee80211_hdr *hdr = NULL;
3015         int i, sh;
3016         int txq_id, idx;
3017         u16 seq;
3018
3019         if (agg->wait_for_ba)
3020                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3021
3022         agg->frame_count = tx_resp->frame_count;
3023         agg->start_idx = start_idx;
3024         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3025         agg->bitmap = 0;
3026
3027         /* # frames attempted by Tx command */
3028         if (agg->frame_count == 1) {
3029                 /* Only one frame was attempted; no block-ack will arrive */
3030                 status = le16_to_cpu(frame_status[0].status);
3031                 seq  = le16_to_cpu(frame_status[0].sequence);
3032                 idx = SEQ_TO_INDEX(seq);
3033                 txq_id = SEQ_TO_QUEUE(seq);
3034
3035                 /* FIXME: code repetition */
3036                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3037                                    agg->frame_count, agg->start_idx, idx);
3038
3039                 tx_status = &(priv->txq[txq_id].txb[idx].status);
3040                 tx_status->retry_count = tx_resp->failure_frame;
3041                 tx_status->queue_number = status & 0xff;
3042                 tx_status->queue_length = tx_resp->failure_rts;
3043                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3044                 tx_status->flags = iwl4965_is_tx_success(status)?
3045                         IEEE80211_TX_STATUS_ACK : 0;
3046                 iwl4965_hwrate_to_tx_control(priv,
3047                                              le32_to_cpu(tx_resp->rate_n_flags),
3048                                              &tx_status->control);
3049                 /* FIXME: code repetition end */
3050
3051                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3052                                     status & 0xff, tx_resp->failure_frame);
3053                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3054                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3055
3056                 agg->wait_for_ba = 0;
3057         } else {
3058                 /* Two or more frames were attempted; expect block-ack */
3059                 u64 bitmap = 0;
3060                 int start = agg->start_idx;
3061
3062                 /* Construct bit-map of pending frames within Tx window */
3063                 for (i = 0; i < agg->frame_count; i++) {
3064                         u16 sc;
3065                         status = le16_to_cpu(frame_status[i].status);
3066                         seq  = le16_to_cpu(frame_status[i].sequence);
3067                         idx = SEQ_TO_INDEX(seq);
3068                         txq_id = SEQ_TO_QUEUE(seq);
3069
3070                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3071                                       AGG_TX_STATE_ABORT_MSK))
3072                                 continue;
3073
3074                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3075                                            agg->frame_count, txq_id, idx);
3076
3077                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3078
3079                         sc = le16_to_cpu(hdr->seq_ctrl);
3080                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3081                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3082                                           " idx=%d, seq_idx=%d, seq=%d\n",
3083                                           idx, SEQ_TO_SN(sc),
3084                                           hdr->seq_ctrl);
3085                                 return -1;
3086                         }
3087
3088                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3089                                            i, idx, SEQ_TO_SN(sc));
3090
3091                         sh = idx - start;
3092                         if (sh > 64) {
3093                                 sh = (start - idx) + 0xff;
3094                                 bitmap = bitmap << sh;
3095                                 sh = 0;
3096                                 start = idx;
3097                         } else if (sh < -64)
3098                                 sh  = 0xff - (start - idx);
3099                         else if (sh < 0) {
3100                                 sh = start - idx;
3101                                 start = idx;
3102                                 bitmap = bitmap << sh;
3103                                 sh = 0;
3104                         }
3105                         bitmap |= (1 << sh);
3106                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3107                                            start, (u32)(bitmap & 0xFFFFFFFF));
3108                 }
3109
3110                 agg->bitmap = bitmap;
3111                 agg->start_idx = start;
3112                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3113                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3114                                    agg->frame_count, agg->start_idx,
3115                                    agg->bitmap);
3116
3117                 if (bitmap)
3118                         agg->wait_for_ba = 1;
3119         }
3120         return 0;
3121 }
3122 #endif
3123
3124 /**
3125  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3126  */
3127 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
3128                             struct iwl4965_rx_mem_buffer *rxb)
3129 {
3130         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3131         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3132         int txq_id = SEQ_TO_QUEUE(sequence);
3133         int index = SEQ_TO_INDEX(sequence);
3134         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3135         struct ieee80211_tx_status *tx_status;
3136         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3137         u32  status = le32_to_cpu(tx_resp->status);
3138 #ifdef CONFIG_IWL4965_HT
3139         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3140         struct ieee80211_hdr *hdr;
3141         __le16 *qc;
3142 #endif
3143
3144         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3145                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3146                           "is out of range [0-%d] %d %d\n", txq_id,
3147                           index, txq->q.n_bd, txq->q.write_ptr,
3148                           txq->q.read_ptr);
3149                 return;
3150         }
3151
3152 #ifdef CONFIG_IWL4965_HT
3153         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3154         qc = ieee80211_get_qos_ctrl(hdr);
3155
3156         if (qc)
3157                 tid = le16_to_cpu(*qc) & 0xf;
3158
3159         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3160         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3161                 IWL_ERROR("Station not known\n");
3162                 return;
3163         }
3164
3165         if (txq->sched_retry) {
3166                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3167                 struct iwl4965_ht_agg *agg = NULL;
3168
3169                 if (!qc)
3170                         return;
3171
3172                 agg = &priv->stations[sta_id].tid[tid].agg;
3173
3174                 iwl4965_tx_status_reply_tx(priv, agg,
3175                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3176
3177                 if ((tx_resp->frame_count == 1) &&
3178                     !iwl4965_is_tx_success(status)) {
3179                         /* TODO: send BAR */
3180                 }
3181
3182                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3183                         int freed;
3184                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3185                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3186                                            "%d index %d\n", scd_ssn , index);
3187                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3188                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3189
3190                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3191                             txq_id >= 0 && priv->mac80211_registered &&
3192                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3193                                 ieee80211_wake_queue(priv->hw, txq_id);
3194
3195                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3196                 }
3197         } else {
3198 #endif /* CONFIG_IWL4965_HT */
3199         tx_status = &(txq->txb[txq->q.read_ptr].status);
3200
3201         tx_status->retry_count = tx_resp->failure_frame;
3202         tx_status->queue_number = status;
3203         tx_status->queue_length = tx_resp->bt_kill_count;
3204         tx_status->queue_length |= tx_resp->failure_rts;
3205         tx_status->flags =
3206             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3207         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3208                                      &tx_status->control);
3209
3210         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3211                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3212                      status, le32_to_cpu(tx_resp->rate_n_flags),
3213                      tx_resp->failure_frame);
3214
3215         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3216         if (index != -1) {
3217                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3218 #ifdef CONFIG_IWL4965_HT
3219                 if (tid != MAX_TID_COUNT)
3220                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3221                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3222                         (txq_id >= 0) &&
3223                         priv->mac80211_registered)
3224                         ieee80211_wake_queue(priv->hw, txq_id);
3225                 if (tid != MAX_TID_COUNT)
3226                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3227 #endif
3228         }
3229 #ifdef CONFIG_IWL4965_HT
3230         }
3231 #endif /* CONFIG_IWL4965_HT */
3232
3233         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3234                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3235 }
3236
3237
3238 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3239                                struct iwl4965_rx_mem_buffer *rxb)
3240 {
3241         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3242         struct iwl4965_alive_resp *palive;
3243         struct delayed_work *pwork;
3244
3245         palive = &pkt->u.alive_frame;
3246
3247         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3248                        "0x%01X 0x%01X\n",
3249                        palive->is_valid, palive->ver_type,
3250                        palive->ver_subtype);
3251
3252         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3253                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3254                 memcpy(&priv->card_alive_init,
3255                        &pkt->u.alive_frame,
3256                        sizeof(struct iwl4965_init_alive_resp));
3257                 pwork = &priv->init_alive_start;
3258         } else {
3259                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3260                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3261                        sizeof(struct iwl4965_alive_resp));
3262                 pwork = &priv->alive_start;
3263         }
3264
3265         /* We delay the ALIVE response by 5ms to
3266          * give the HW RF Kill time to activate... */
3267         if (palive->is_valid == UCODE_VALID_OK)
3268                 queue_delayed_work(priv->workqueue, pwork,
3269                                    msecs_to_jiffies(5));
3270         else
3271                 IWL_WARNING("uCode did not respond OK.\n");
3272 }
3273
3274 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3275                                  struct iwl4965_rx_mem_buffer *rxb)
3276 {
3277         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3278
3279         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3280         return;
3281 }
3282
3283 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3284                                struct iwl4965_rx_mem_buffer *rxb)
3285 {
3286         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3287
3288         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3289                 "seq 0x%04X ser 0x%08X\n",
3290                 le32_to_cpu(pkt->u.err_resp.error_type),
3291                 get_cmd_string(pkt->u.err_resp.cmd_id),
3292                 pkt->u.err_resp.cmd_id,
3293                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3294                 le32_to_cpu(pkt->u.err_resp.error_info));
3295 }
3296
3297 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3298
3299 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3300 {
3301         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3302         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3303         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3304         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3305                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3306         rxon->channel = csa->channel;
3307         priv->staging_rxon.channel = csa->channel;
3308 }
3309
3310 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3311                                           struct iwl4965_rx_mem_buffer *rxb)
3312 {
3313 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3314         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3315         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3316
3317         if (!report->state) {
3318                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3319                           "Spectrum Measure Notification: Start\n");
3320                 return;
3321         }
3322
3323         memcpy(&priv->measure_report, report, sizeof(*report));
3324         priv->measurement_status |= MEASUREMENT_READY;
3325 #endif
3326 }
3327
3328 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3329                                   struct iwl4965_rx_mem_buffer *rxb)
3330 {
3331 #ifdef CONFIG_IWLWIFI_DEBUG
3332         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3333         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3334         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3335                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3336 #endif
3337 }
3338
3339 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3340                                              struct iwl4965_rx_mem_buffer *rxb)
3341 {
3342         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3343         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3344                         "notification for %s:\n",
3345                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3346         iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3347 }
3348
3349 static void iwl4965_bg_beacon_update(struct work_struct *work)
3350 {
3351         struct iwl_priv *priv =
3352                 container_of(work, struct iwl_priv, beacon_update);
3353         struct sk_buff *beacon;
3354
3355         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3356         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3357
3358         if (!beacon) {
3359                 IWL_ERROR("update beacon failed\n");
3360                 return;
3361         }
3362
3363         mutex_lock(&priv->mutex);
3364         /* new beacon skb is allocated every time; dispose previous.*/
3365         if (priv->ibss_beacon)
3366                 dev_kfree_skb(priv->ibss_beacon);
3367
3368         priv->ibss_beacon = beacon;
3369         mutex_unlock(&priv->mutex);
3370
3371         iwl4965_send_beacon_cmd(priv);
3372 }
3373
3374 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3375                                 struct iwl4965_rx_mem_buffer *rxb)
3376 {
3377 #ifdef CONFIG_IWLWIFI_DEBUG
3378         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3379         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3380         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3381
3382         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3383                 "tsf %d %d rate %d\n",
3384                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3385                 beacon->beacon_notify_hdr.failure_frame,
3386                 le32_to_cpu(beacon->ibss_mgr_status),
3387                 le32_to_cpu(beacon->high_tsf),
3388                 le32_to_cpu(beacon->low_tsf), rate);
3389 #endif
3390
3391         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3392             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3393                 queue_work(priv->workqueue, &priv->beacon_update);
3394 }
3395
3396 /* Service response to REPLY_SCAN_CMD (0x80) */
3397 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3398                               struct iwl4965_rx_mem_buffer *rxb)
3399 {
3400 #ifdef CONFIG_IWLWIFI_DEBUG
3401         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3402         struct iwl4965_scanreq_notification *notif =
3403             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3404
3405         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3406 #endif
3407 }
3408
3409 /* Service SCAN_START_NOTIFICATION (0x82) */
3410 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3411                                     struct iwl4965_rx_mem_buffer *rxb)
3412 {
3413         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3414         struct iwl4965_scanstart_notification *notif =
3415             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3416         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3417         IWL_DEBUG_SCAN("Scan start: "
3418                        "%d [802.11%s] "
3419                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3420                        notif->channel,
3421                        notif->band ? "bg" : "a",
3422                        notif->tsf_high,
3423                        notif->tsf_low, notif->status, notif->beacon_timer);
3424 }
3425
3426 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3427 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3428                                       struct iwl4965_rx_mem_buffer *rxb)
3429 {
3430         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3431         struct iwl4965_scanresults_notification *notif =
3432             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3433
3434         IWL_DEBUG_SCAN("Scan ch.res: "
3435                        "%d [802.11%s] "
3436                        "(TSF: 0x%08X:%08X) - %d "
3437                        "elapsed=%lu usec (%dms since last)\n",
3438                        notif->channel,
3439                        notif->band ? "bg" : "a",
3440                        le32_to_cpu(notif->tsf_high),
3441                        le32_to_cpu(notif->tsf_low),
3442                        le32_to_cpu(notif->statistics[0]),
3443                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3444                        jiffies_to_msecs(elapsed_jiffies
3445                                         (priv->last_scan_jiffies, jiffies)));
3446
3447         priv->last_scan_jiffies = jiffies;
3448         priv->next_scan_jiffies = 0;
3449 }
3450
3451 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3452 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3453                                        struct iwl4965_rx_mem_buffer *rxb)
3454 {
3455         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3456         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3457
3458         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3459                        scan_notif->scanned_channels,
3460                        scan_notif->tsf_low,
3461                        scan_notif->tsf_high, scan_notif->status);
3462
3463         /* The HW is no longer scanning */
3464         clear_bit(STATUS_SCAN_HW, &priv->status);
3465
3466         /* The scan completion notification came in, so kill that timer... */
3467         cancel_delayed_work(&priv->scan_check);
3468
3469         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3470                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3471                        jiffies_to_msecs(elapsed_jiffies
3472                                         (priv->scan_pass_start, jiffies)));
3473
3474         /* Remove this scanned band from the list
3475          * of pending bands to scan */
3476         priv->scan_bands--;
3477
3478         /* If a request to abort was given, or the scan did not succeed
3479          * then we reset the scan state machine and terminate,
3480          * re-queuing another scan if one has been requested */
3481         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3482                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3483                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3484         } else {
3485                 /* If there are more bands on this scan pass reschedule */
3486                 if (priv->scan_bands > 0)
3487                         goto reschedule;
3488         }
3489
3490         priv->last_scan_jiffies = jiffies;
3491         priv->next_scan_jiffies = 0;
3492         IWL_DEBUG_INFO("Setting scan to off\n");
3493
3494         clear_bit(STATUS_SCANNING, &priv->status);
3495
3496         IWL_DEBUG_INFO("Scan took %dms\n",
3497                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3498
3499         queue_work(priv->workqueue, &priv->scan_completed);
3500
3501         return;
3502
3503 reschedule:
3504         priv->scan_pass_start = jiffies;
3505         queue_work(priv->workqueue, &priv->request_scan);
3506 }
3507
3508 /* Handle notification from uCode that card's power state is changing
3509  * due to software, hardware, or critical temperature RFKILL */
3510 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3511                                     struct iwl4965_rx_mem_buffer *rxb)
3512 {
3513         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3514         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3515         unsigned long status = priv->status;
3516
3517         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3518                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3519                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3520
3521         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3522                      RF_CARD_DISABLED)) {
3523
3524                 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3525                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3526
3527                 if (!iwl4965_grab_nic_access(priv)) {
3528                         iwl4965_write_direct32(
3529                                 priv, HBUS_TARG_MBX_C,
3530                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3531
3532                         iwl4965_release_nic_access(priv);
3533                 }
3534
3535                 if (!(flags & RXON_CARD_DISABLED)) {
3536                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3537                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3538                         if (!iwl4965_grab_nic_access(priv)) {
3539                                 iwl4965_write_direct32(
3540                                         priv, HBUS_TARG_MBX_C,
3541                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3542
3543                                 iwl4965_release_nic_access(priv);
3544                         }
3545                 }
3546
3547                 if (flags & RF_CARD_DISABLED) {
3548                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3549                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3550                         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3551                         if (!iwl4965_grab_nic_access(priv))
3552                                 iwl4965_release_nic_access(priv);
3553                 }
3554         }
3555
3556         if (flags & HW_CARD_DISABLED)
3557                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3558         else
3559                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3560
3561
3562         if (flags & SW_CARD_DISABLED)
3563                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3564         else
3565                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3566
3567         if (!(flags & RXON_CARD_DISABLED))
3568                 iwl4965_scan_cancel(priv);
3569
3570         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3571              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3572             (test_bit(STATUS_RF_KILL_SW, &status) !=
3573              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3574                 queue_work(priv->workqueue, &priv->rf_kill);
3575         else
3576                 wake_up_interruptible(&priv->wait_command_queue);
3577 }
3578
3579 /**
3580  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3581  *
3582  * Setup the RX handlers for each of the reply types sent from the uCode
3583  * to the host.
3584  *
3585  * This function chains into the hardware specific files for them to setup
3586  * any hardware specific handlers as well.
3587  */
3588 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3589 {
3590         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3591         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3592         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3593         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3594         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3595             iwl4965_rx_spectrum_measure_notif;
3596         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3597         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3598             iwl4965_rx_pm_debug_statistics_notif;
3599         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3600
3601         /*
3602          * The same handler is used for both the REPLY to a discrete
3603          * statistics request from the host as well as for the periodic
3604          * statistics notifications (after received beacons) from the uCode.
3605          */
3606         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3607         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3608
3609         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3610         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3611         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3612             iwl4965_rx_scan_results_notif;
3613         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3614             iwl4965_rx_scan_complete_notif;
3615         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3616         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3617
3618         /* Set up hardware specific Rx handlers */
3619         iwl4965_hw_rx_handler_setup(priv);
3620 }
3621
3622 /**
3623  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3624  * @rxb: Rx buffer to reclaim
3625  *
3626  * If an Rx buffer has an async callback associated with it the callback
3627  * will be executed.  The attached skb (if present) will only be freed
3628  * if the callback returns 1
3629  */
3630 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3631                                 struct iwl4965_rx_mem_buffer *rxb)
3632 {
3633         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3634         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3635         int txq_id = SEQ_TO_QUEUE(sequence);
3636         int index = SEQ_TO_INDEX(sequence);
3637         int huge = sequence & SEQ_HUGE_FRAME;
3638         int cmd_index;
3639         struct iwl_cmd *cmd;
3640
3641         /* If a Tx command is being handled and it isn't in the actual
3642          * command queue then there a command routing bug has been introduced
3643          * in the queue management code. */
3644         if (txq_id != IWL_CMD_QUEUE_NUM)
3645                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3646                           txq_id, pkt->hdr.cmd);
3647         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3648
3649         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3650         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3651
3652         /* Input error checking is done when commands are added to queue. */
3653         if (cmd->meta.flags & CMD_WANT_SKB) {
3654                 cmd->meta.source->u.skb = rxb->skb;
3655                 rxb->skb = NULL;
3656         } else if (cmd->meta.u.callback &&
3657                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3658                 rxb->skb = NULL;
3659
3660         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3661
3662         if (!(cmd->meta.flags & CMD_ASYNC)) {
3663                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3664                 wake_up_interruptible(&priv->wait_command_queue);
3665         }
3666 }
3667
3668 /************************** RX-FUNCTIONS ****************************/
3669 /*
3670  * Rx theory of operation
3671  *
3672  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3673  * each of which point to Receive Buffers to be filled by 4965.  These get
3674  * used not only for Rx frames, but for any command response or notification
3675  * from the 4965.  The driver and 4965 manage the Rx buffers by means
3676  * of indexes into the circular buffer.
3677  *
3678  * Rx Queue Indexes
3679  * The host/firmware share two index registers for managing the Rx buffers.
3680  *
3681  * The READ index maps to the first position that the firmware may be writing
3682  * to -- the driver can read up to (but not including) this position and get
3683  * good data.
3684  * The READ index is managed by the firmware once the card is enabled.
3685  *
3686  * The WRITE index maps to the last position the driver has read from -- the
3687  * position preceding WRITE is the last slot the firmware can place a packet.
3688  *
3689  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3690  * WRITE = READ.
3691  *
3692  * During initialization, the host sets up the READ queue position to the first
3693  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3694  *
3695  * When the firmware places a packet in a buffer, it will advance the READ index
3696  * and fire the RX interrupt.  The driver can then query the READ index and
3697  * process as many packets as possible, moving the WRITE index forward as it
3698  * resets the Rx queue buffers with new memory.
3699  *
3700  * The management in the driver is as follows:
3701  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3702  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3703  *   to replenish the iwl->rxq->rx_free.
3704  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3705  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3706  *   'processed' and 'read' driver indexes as well)
3707  * + A received packet is processed and handed to the kernel network stack,
3708  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3709  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3710  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3711  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3712  *   were enough free buffers and RX_STALLED is set it is cleared.
3713  *
3714  *
3715  * Driver sequence:
3716  *
3717  * iwl4965_rx_queue_alloc()   Allocates rx_free
3718  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3719  *                            iwl4965_rx_queue_restock
3720  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3721  *                            queue, updates firmware pointers, and updates
3722  *                            the WRITE index.  If insufficient rx_free buffers
3723  *                            are available, schedules iwl4965_rx_replenish
3724  *
3725  * -- enable interrupts --
3726  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
3727  *                            READ INDEX, detaching the SKB from the pool.
3728  *                            Moves the packet buffer from queue to rx_used.
3729  *                            Calls iwl4965_rx_queue_restock to refill any empty
3730  *                            slots.
3731  * ...
3732  *
3733  */
3734
3735 /**
3736  * iwl4965_rx_queue_space - Return number of free slots available in queue.
3737  */
3738 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3739 {
3740         int s = q->read - q->write;
3741         if (s <= 0)
3742                 s += RX_QUEUE_SIZE;
3743         /* keep some buffer to not confuse full and empty queue */
3744         s -= 2;
3745         if (s < 0)
3746                 s = 0;
3747         return s;
3748 }
3749
3750 /**
3751  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3752  */
3753 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3754 {
3755         u32 reg = 0;
3756         int rc = 0;
3757         unsigned long flags;
3758
3759         spin_lock_irqsave(&q->lock, flags);
3760
3761         if (q->need_update == 0)
3762                 goto exit_unlock;
3763
3764         /* If power-saving is in use, make sure device is awake */
3765         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3766                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3767
3768                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3769                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
3770                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3771                         goto exit_unlock;
3772                 }
3773
3774                 rc = iwl4965_grab_nic_access(priv);
3775                 if (rc)
3776                         goto exit_unlock;
3777
3778                 /* Device expects a multiple of 8 */
3779                 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3780                                      q->write & ~0x7);
3781                 iwl4965_release_nic_access(priv);
3782
3783         /* Else device is assumed to be awake */
3784         } else
3785                 /* Device expects a multiple of 8 */
3786                 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3787
3788
3789         q->need_update = 0;
3790
3791  exit_unlock:
3792         spin_unlock_irqrestore(&q->lock, flags);
3793         return rc;
3794 }
3795
3796 /**
3797  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3798  */
3799 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3800                                           dma_addr_t dma_addr)
3801 {
3802         return cpu_to_le32((u32)(dma_addr >> 8));
3803 }
3804
3805
3806 /**
3807  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3808  *
3809  * If there are slots in the RX queue that need to be restocked,
3810  * and we have free pre-allocated buffers, fill the ranks as much
3811  * as we can, pulling from rx_free.
3812  *
3813  * This moves the 'write' index forward to catch up with 'processed', and
3814  * also updates the memory address in the firmware to reference the new
3815  * target buffer.
3816  */
3817 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3818 {
3819         struct iwl4965_rx_queue *rxq = &priv->rxq;
3820         struct list_head *element;
3821         struct iwl4965_rx_mem_buffer *rxb;
3822         unsigned long flags;
3823         int write, rc;
3824
3825         spin_lock_irqsave(&rxq->lock, flags);
3826         write = rxq->write & ~0x7;
3827         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3828                 /* Get next free Rx buffer, remove from free list */
3829                 element = rxq->rx_free.next;
3830                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3831                 list_del(element);
3832
3833                 /* Point to Rx buffer via next RBD in circular buffer */
3834                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3835                 rxq->queue[rxq->write] = rxb;
3836                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3837                 rxq->free_count--;
3838         }
3839         spin_unlock_irqrestore(&rxq->lock, flags);
3840         /* If the pre-allocated buffer pool is dropping low, schedule to
3841          * refill it */
3842         if (rxq->free_count <= RX_LOW_WATERMARK)
3843                 queue_work(priv->workqueue, &priv->rx_replenish);
3844
3845
3846         /* If we've added more space for the firmware to place data, tell it.
3847          * Increment device's write pointer in multiples of 8. */
3848         if ((write != (rxq->write & ~0x7))
3849             || (abs(rxq->write - rxq->read) > 7)) {
3850                 spin_lock_irqsave(&rxq->lock, flags);
3851                 rxq->need_update = 1;
3852                 spin_unlock_irqrestore(&rxq->lock, flags);
3853                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3854                 if (rc)
3855                         return rc;
3856         }
3857
3858         return 0;
3859 }
3860
3861 /**
3862  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3863  *
3864  * When moving to rx_free an SKB is allocated for the slot.
3865  *
3866  * Also restock the Rx queue via iwl4965_rx_queue_restock.
3867  * This is called as a scheduled work item (except for during initialization)
3868  */
3869 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3870 {
3871         struct iwl4965_rx_queue *rxq = &priv->rxq;
3872         struct list_head *element;
3873         struct iwl4965_rx_mem_buffer *rxb;
3874         unsigned long flags;
3875         spin_lock_irqsave(&rxq->lock, flags);
3876         while (!list_empty(&rxq->rx_used)) {
3877                 element = rxq->rx_used.next;
3878                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3879
3880                 /* Alloc a new receive buffer */
3881                 rxb->skb =
3882                     alloc_skb(priv->hw_setting.rx_buf_size,
3883                                 __GFP_NOWARN | GFP_ATOMIC);
3884                 if (!rxb->skb) {
3885                         if (net_ratelimit())
3886                                 printk(KERN_CRIT DRV_NAME
3887                                        ": Can not allocate SKB buffers\n");
3888                         /* We don't reschedule replenish work here -- we will
3889                          * call the restock method and if it still needs
3890                          * more buffers it will schedule replenish */
3891                         break;
3892                 }
3893                 priv->alloc_rxb_skb++;
3894                 list_del(element);
3895
3896                 /* Get physical address of RB/SKB */
3897                 rxb->dma_addr =
3898                     pci_map_single(priv->pci_dev, rxb->skb->data,
3899                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
3900                 list_add_tail(&rxb->list, &rxq->rx_free);
3901                 rxq->free_count++;
3902         }
3903         spin_unlock_irqrestore(&rxq->lock, flags);
3904 }
3905
3906 /*
3907  * this should be called while priv->lock is locked
3908 */
3909 static void __iwl4965_rx_replenish(void *data)
3910 {
3911         struct iwl_priv *priv = data;
3912
3913         iwl4965_rx_allocate(priv);
3914         iwl4965_rx_queue_restock(priv);
3915 }
3916
3917
3918 void iwl4965_rx_replenish(void *data)
3919 {
3920         struct iwl_priv *priv = data;
3921         unsigned long flags;
3922
3923         iwl4965_rx_allocate(priv);
3924
3925         spin_lock_irqsave(&priv->lock, flags);
3926         iwl4965_rx_queue_restock(priv);
3927         spin_unlock_irqrestore(&priv->lock, flags);
3928 }
3929
3930 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3931  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3932  * This free routine walks the list of POOL entries and if SKB is set to
3933  * non NULL it is unmapped and freed
3934  */
3935 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3936 {
3937         int i;
3938         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3939                 if (rxq->pool[i].skb != NULL) {
3940                         pci_unmap_single(priv->pci_dev,
3941                                          rxq->pool[i].dma_addr,
3942                                          priv->hw_setting.rx_buf_size,
3943                                          PCI_DMA_FROMDEVICE);
3944                         dev_kfree_skb(rxq->pool[i].skb);
3945                 }
3946         }
3947
3948         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3949                             rxq->dma_addr);
3950         rxq->bd = NULL;
3951 }
3952
3953 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3954 {
3955         struct iwl4965_rx_queue *rxq = &priv->rxq;
3956         struct pci_dev *dev = priv->pci_dev;
3957         int i;
3958
3959         spin_lock_init(&rxq->lock);
3960         INIT_LIST_HEAD(&rxq->rx_free);
3961         INIT_LIST_HEAD(&rxq->rx_used);
3962
3963         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3964         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3965         if (!rxq->bd)
3966                 return -ENOMEM;
3967
3968         /* Fill the rx_used queue with _all_ of the Rx buffers */
3969         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3970                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3971
3972         /* Set us so that we have processed and used all buffers, but have
3973          * not restocked the Rx queue with fresh buffers */
3974         rxq->read = rxq->write = 0;
3975         rxq->free_count = 0;
3976         rxq->need_update = 0;
3977         return 0;
3978 }
3979
3980 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3981 {
3982         unsigned long flags;
3983         int i;
3984         spin_lock_irqsave(&rxq->lock, flags);
3985         INIT_LIST_HEAD(&rxq->rx_free);
3986         INIT_LIST_HEAD(&rxq->rx_used);
3987         /* Fill the rx_used queue with _all_ of the Rx buffers */
3988         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3989                 /* In the reset function, these buffers may have been allocated
3990                  * to an SKB, so we need to unmap and free potential storage */
3991                 if (rxq->pool[i].skb != NULL) {
3992                         pci_unmap_single(priv->pci_dev,
3993                                          rxq->pool[i].dma_addr,
3994                                          priv->hw_setting.rx_buf_size,
3995                                          PCI_DMA_FROMDEVICE);
3996                         priv->alloc_rxb_skb--;
3997                         dev_kfree_skb(rxq->pool[i].skb);
3998                         rxq->pool[i].skb = NULL;
3999                 }
4000                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4001         }
4002
4003         /* Set us so that we have processed and used all buffers, but have
4004          * not restocked the Rx queue with fresh buffers */
4005         rxq->read = rxq->write = 0;
4006         rxq->free_count = 0;
4007         spin_unlock_irqrestore(&rxq->lock, flags);
4008 }
4009
4010 /* Convert linear signal-to-noise ratio into dB */
4011 static u8 ratio2dB[100] = {
4012 /*       0   1   2   3   4   5   6   7   8   9 */
4013          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4014         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4015         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4016         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4017         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4018         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4019         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4020         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4021         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4022         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4023 };
4024
4025 /* Calculates a relative dB value from a ratio of linear
4026  *   (i.e. not dB) signal levels.
4027  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4028 int iwl4965_calc_db_from_ratio(int sig_ratio)
4029 {
4030         /* 1000:1 or higher just report as 60 dB */
4031         if (sig_ratio >= 1000)
4032                 return 60;
4033
4034         /* 100:1 or higher, divide by 10 and use table,
4035          *   add 20 dB to make up for divide by 10 */
4036         if (sig_ratio >= 100)
4037                 return (20 + (int)ratio2dB[sig_ratio/10]);
4038
4039         /* We shouldn't see this */
4040         if (sig_ratio < 1)
4041                 return 0;
4042
4043         /* Use table for ratios 1:1 - 99:1 */
4044         return (int)ratio2dB[sig_ratio];
4045 }
4046
4047 #define PERFECT_RSSI (-20) /* dBm */
4048 #define WORST_RSSI (-95)   /* dBm */
4049 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4050
4051 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4052  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4053  *   about formulas used below. */
4054 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4055 {
4056         int sig_qual;
4057         int degradation = PERFECT_RSSI - rssi_dbm;
4058
4059         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4060          * as indicator; formula is (signal dbm - noise dbm).
4061          * SNR at or above 40 is a great signal (100%).
4062          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4063          * Weakest usable signal is usually 10 - 15 dB SNR. */
4064         if (noise_dbm) {
4065                 if (rssi_dbm - noise_dbm >= 40)
4066                         return 100;
4067                 else if (rssi_dbm < noise_dbm)
4068                         return 0;
4069                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4070
4071         /* Else use just the signal level.
4072          * This formula is a least squares fit of data points collected and
4073          *   compared with a reference system that had a percentage (%) display
4074          *   for signal quality. */
4075         } else
4076                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4077                             (15 * RSSI_RANGE + 62 * degradation)) /
4078                            (RSSI_RANGE * RSSI_RANGE);
4079
4080         if (sig_qual > 100)
4081                 sig_qual = 100;
4082         else if (sig_qual < 1)
4083                 sig_qual = 0;
4084
4085         return sig_qual;
4086 }
4087
4088 /**
4089  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4090  *
4091  * Uses the priv->rx_handlers callback function array to invoke
4092  * the appropriate handlers, including command responses,
4093  * frame-received notifications, and other notifications.
4094  */
4095 static void iwl4965_rx_handle(struct iwl_priv *priv)
4096 {
4097         struct iwl4965_rx_mem_buffer *rxb;
4098         struct iwl4965_rx_packet *pkt;
4099         struct iwl4965_rx_queue *rxq = &priv->rxq;
4100         u32 r, i;
4101         int reclaim;
4102         unsigned long flags;
4103         u8 fill_rx = 0;
4104         u32 count = 8;
4105
4106         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4107          * buffer that the driver may process (last buffer filled by ucode). */
4108         r = iwl4965_hw_get_rx_read(priv);
4109         i = rxq->read;
4110
4111         /* Rx interrupt, but nothing sent from uCode */
4112         if (i == r)
4113                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4114
4115         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4116                 fill_rx = 1;
4117
4118         while (i != r) {
4119                 rxb = rxq->queue[i];
4120
4121                 /* If an RXB doesn't have a Rx queue slot associated with it,
4122                  * then a bug has been introduced in the queue refilling
4123                  * routines -- catch it here */
4124                 BUG_ON(rxb == NULL);
4125
4126                 rxq->queue[i] = NULL;
4127
4128                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4129                                             priv->hw_setting.rx_buf_size,
4130                                             PCI_DMA_FROMDEVICE);
4131                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4132
4133                 /* Reclaim a command buffer only if this packet is a response
4134                  *   to a (driver-originated) command.
4135                  * If the packet (e.g. Rx frame) originated from uCode,
4136                  *   there is no command buffer to reclaim.
4137                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4138                  *   but apparently a few don't get set; catch them here. */
4139                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4140                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4141                         (pkt->hdr.cmd != REPLY_RX) &&
4142                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4143                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4144                         (pkt->hdr.cmd != REPLY_TX);
4145
4146                 /* Based on type of command response or notification,
4147                  *   handle those that need handling via function in
4148                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4149                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4150                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4151                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4152                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4153                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4154                 } else {
4155                         /* No handling needed */
4156                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4157                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4158                                 r, i, get_cmd_string(pkt->hdr.cmd),
4159                                 pkt->hdr.cmd);
4160                 }
4161
4162                 if (reclaim) {
4163                         /* Invoke any callbacks, transfer the skb to caller, and
4164                          * fire off the (possibly) blocking iwl_send_cmd()
4165                          * as we reclaim the driver command queue */
4166                         if (rxb && rxb->skb)
4167                                 iwl4965_tx_cmd_complete(priv, rxb);
4168                         else
4169                                 IWL_WARNING("Claim null rxb?\n");
4170                 }
4171
4172                 /* For now we just don't re-use anything.  We can tweak this
4173                  * later to try and re-use notification packets and SKBs that
4174                  * fail to Rx correctly */
4175                 if (rxb->skb != NULL) {
4176                         priv->alloc_rxb_skb--;
4177                         dev_kfree_skb_any(rxb->skb);
4178                         rxb->skb = NULL;
4179                 }
4180
4181                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4182                                  priv->hw_setting.rx_buf_size,
4183                                  PCI_DMA_FROMDEVICE);
4184                 spin_lock_irqsave(&rxq->lock, flags);
4185                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4186                 spin_unlock_irqrestore(&rxq->lock, flags);
4187                 i = (i + 1) & RX_QUEUE_MASK;
4188                 /* If there are a lot of unused frames,
4189                  * restock the Rx queue so ucode wont assert. */
4190                 if (fill_rx) {
4191                         count++;
4192                         if (count >= 8) {
4193                                 priv->rxq.read = i;
4194                                 __iwl4965_rx_replenish(priv);
4195                                 count = 0;
4196                         }
4197                 }
4198         }
4199
4200         /* Backtrack one entry */
4201         priv->rxq.read = i;
4202         iwl4965_rx_queue_restock(priv);
4203 }
4204
4205 /**
4206  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4207  */
4208 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4209                                   struct iwl4965_tx_queue *txq)
4210 {
4211         u32 reg = 0;
4212         int rc = 0;
4213         int txq_id = txq->q.id;
4214
4215         if (txq->need_update == 0)
4216                 return rc;
4217
4218         /* if we're trying to save power */
4219         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4220                 /* wake up nic if it's powered down ...
4221                  * uCode will wake up, and interrupt us again, so next
4222                  * time we'll skip this part. */
4223                 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4224
4225                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4226                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4227                         iwl4965_set_bit(priv, CSR_GP_CNTRL,
4228                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4229                         return rc;
4230                 }
4231
4232                 /* restore this queue's parameters in nic hardware. */
4233                 rc = iwl4965_grab_nic_access(priv);
4234                 if (rc)
4235                         return rc;
4236                 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4237                                      txq->q.write_ptr | (txq_id << 8));
4238                 iwl4965_release_nic_access(priv);
4239
4240         /* else not in power-save mode, uCode will never sleep when we're
4241          * trying to tx (during RFKILL, we're not trying to tx). */
4242         } else
4243                 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4244                             txq->q.write_ptr | (txq_id << 8));
4245
4246         txq->need_update = 0;
4247
4248         return rc;
4249 }
4250
4251 #ifdef CONFIG_IWLWIFI_DEBUG
4252 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4253 {
4254         DECLARE_MAC_BUF(mac);
4255
4256         IWL_DEBUG_RADIO("RX CONFIG:\n");
4257         iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4258         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4259         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4260         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4261                         le32_to_cpu(rxon->filter_flags));
4262         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4263         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4264                         rxon->ofdm_basic_rates);
4265         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4266         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4267                         print_mac(mac, rxon->node_addr));
4268         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4269                         print_mac(mac, rxon->bssid_addr));
4270         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4271 }
4272 #endif
4273
4274 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4275 {
4276         IWL_DEBUG_ISR("Enabling interrupts\n");
4277         set_bit(STATUS_INT_ENABLED, &priv->status);
4278         iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4279 }
4280
4281 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4282 {
4283         clear_bit(STATUS_INT_ENABLED, &priv->status);
4284
4285         /* disable interrupts from uCode/NIC to host */
4286         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4287
4288         /* acknowledge/clear/reset any interrupts still pending
4289          * from uCode or flow handler (Rx/Tx DMA) */
4290         iwl4965_write32(priv, CSR_INT, 0xffffffff);
4291         iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4292         IWL_DEBUG_ISR("Disabled interrupts\n");
4293 }
4294
4295 static const char *desc_lookup(int i)
4296 {
4297         switch (i) {
4298         case 1:
4299                 return "FAIL";
4300         case 2:
4301                 return "BAD_PARAM";
4302         case 3:
4303                 return "BAD_CHECKSUM";
4304         case 4:
4305                 return "NMI_INTERRUPT";
4306         case 5:
4307                 return "SYSASSERT";
4308         case 6:
4309                 return "FATAL_ERROR";
4310         }
4311
4312         return "UNKNOWN";
4313 }
4314
4315 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4316 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4317
4318 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4319 {
4320         u32 data2, line;
4321         u32 desc, time, count, base, data1;
4322         u32 blink1, blink2, ilink1, ilink2;
4323         int rc;
4324
4325         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4326
4327         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4328                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4329                 return;
4330         }
4331
4332         rc = iwl4965_grab_nic_access(priv);
4333         if (rc) {
4334                 IWL_WARNING("Can not read from adapter at this time.\n");
4335                 return;
4336         }
4337
4338         count = iwl4965_read_targ_mem(priv, base);
4339
4340         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4341                 IWL_ERROR("Start IWL Error Log Dump:\n");
4342                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4343         }
4344
4345         desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4346         blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4347         blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4348         ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4349         ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4350         data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4351         data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4352         line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4353         time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4354
4355         IWL_ERROR("Desc               Time       "
4356                   "data1      data2      line\n");
4357         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4358                   desc_lookup(desc), desc, time, data1, data2, line);
4359         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4360         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4361                   ilink1, ilink2);
4362
4363         iwl4965_release_nic_access(priv);
4364 }
4365
4366 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4367
4368 /**
4369  * iwl4965_print_event_log - Dump error event log to syslog
4370  *
4371  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4372  */
4373 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4374                                 u32 num_events, u32 mode)
4375 {
4376         u32 i;
4377         u32 base;       /* SRAM byte address of event log header */
4378         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4379         u32 ptr;        /* SRAM byte address of log data */
4380         u32 ev, time, data; /* event log data */
4381
4382         if (num_events == 0)
4383                 return;
4384
4385         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4386
4387         if (mode == 0)
4388                 event_size = 2 * sizeof(u32);
4389         else
4390                 event_size = 3 * sizeof(u32);
4391
4392         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4393
4394         /* "time" is actually "data" for mode 0 (no timestamp).
4395          * place event id # at far right for easier visual parsing. */
4396         for (i = 0; i < num_events; i++) {
4397                 ev = iwl4965_read_targ_mem(priv, ptr);
4398                 ptr += sizeof(u32);
4399                 time = iwl4965_read_targ_mem(priv, ptr);
4400                 ptr += sizeof(u32);
4401                 if (mode == 0)
4402                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4403                 else {
4404                         data = iwl4965_read_targ_mem(priv, ptr);
4405                         ptr += sizeof(u32);
4406                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4407                 }
4408         }
4409 }
4410
4411 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4412 {
4413         int rc;
4414         u32 base;       /* SRAM byte address of event log header */
4415         u32 capacity;   /* event log capacity in # entries */
4416         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4417         u32 num_wraps;  /* # times uCode wrapped to top of log */
4418         u32 next_entry; /* index of next entry to be written by uCode */
4419         u32 size;       /* # entries that we'll print */
4420
4421         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4422         if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4423                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4424                 return;
4425         }
4426
4427         rc = iwl4965_grab_nic_access(priv);
4428         if (rc) {
4429                 IWL_WARNING("Can not read from adapter at this time.\n");
4430                 return;
4431         }
4432
4433         /* event log header */
4434         capacity = iwl4965_read_targ_mem(priv, base);
4435         mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4436         num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4437         next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4438
4439         size = num_wraps ? capacity : next_entry;
4440
4441         /* bail out if nothing in log */
4442         if (size == 0) {
4443                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4444                 iwl4965_release_nic_access(priv);
4445                 return;
4446         }
4447
4448         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4449                   size, num_wraps);
4450
4451         /* if uCode has wrapped back to top of log, start at the oldest entry,
4452          * i.e the next one that uCode would fill. */
4453         if (num_wraps)
4454                 iwl4965_print_event_log(priv, next_entry,
4455                                     capacity - next_entry, mode);
4456
4457         /* (then/else) start at top of log */
4458         iwl4965_print_event_log(priv, 0, next_entry, mode);
4459
4460         iwl4965_release_nic_access(priv);
4461 }
4462
4463 /**
4464  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4465  */
4466 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4467 {
4468         /* Set the FW error flag -- cleared on iwl4965_down */
4469         set_bit(STATUS_FW_ERROR, &priv->status);
4470
4471         /* Cancel currently queued command. */
4472         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4473
4474 #ifdef CONFIG_IWLWIFI_DEBUG
4475         if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4476                 iwl4965_dump_nic_error_log(priv);
4477                 iwl4965_dump_nic_event_log(priv);
4478                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4479         }
4480 #endif
4481
4482         wake_up_interruptible(&priv->wait_command_queue);
4483
4484         /* Keep the restart process from trying to send host
4485          * commands by clearing the INIT status bit */
4486         clear_bit(STATUS_READY, &priv->status);
4487
4488         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4489                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4490                           "Restarting adapter due to uCode error.\n");
4491
4492                 if (iwl4965_is_associated(priv)) {
4493                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4494                                sizeof(priv->recovery_rxon));
4495                         priv->error_recovering = 1;
4496                 }
4497                 queue_work(priv->workqueue, &priv->restart);
4498         }
4499 }
4500
4501 static void iwl4965_error_recovery(struct iwl_priv *priv)
4502 {
4503         unsigned long flags;
4504
4505         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4506                sizeof(priv->staging_rxon));
4507         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4508         iwl4965_commit_rxon(priv);
4509
4510         iwl4965_rxon_add_station(priv, priv->bssid, 1);
4511
4512         spin_lock_irqsave(&priv->lock, flags);
4513         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4514         priv->error_recovering = 0;
4515         spin_unlock_irqrestore(&priv->lock, flags);
4516 }
4517
4518 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4519 {
4520         u32 inta, handled = 0;
4521         u32 inta_fh;
4522         unsigned long flags;
4523 #ifdef CONFIG_IWLWIFI_DEBUG
4524         u32 inta_mask;
4525 #endif
4526
4527         spin_lock_irqsave(&priv->lock, flags);
4528
4529         /* Ack/clear/reset pending uCode interrupts.
4530          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4531          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4532         inta = iwl4965_read32(priv, CSR_INT);
4533         iwl4965_write32(priv, CSR_INT, inta);
4534
4535         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4536          * Any new interrupts that happen after this, either while we're
4537          * in this tasklet, or later, will show up in next ISR/tasklet. */
4538         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4539         iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4540
4541 #ifdef CONFIG_IWLWIFI_DEBUG
4542         if (iwl_debug_level & IWL_DL_ISR) {
4543                 /* just for debug */
4544                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4545                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4546                               inta, inta_mask, inta_fh);
4547         }
4548 #endif
4549
4550         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4551          * atomic, make sure that inta covers all the interrupts that
4552          * we've discovered, even if FH interrupt came in just after
4553          * reading CSR_INT. */
4554         if (inta_fh & CSR49_FH_INT_RX_MASK)
4555                 inta |= CSR_INT_BIT_FH_RX;
4556         if (inta_fh & CSR49_FH_INT_TX_MASK)
4557                 inta |= CSR_INT_BIT_FH_TX;
4558
4559         /* Now service all interrupt bits discovered above. */
4560         if (inta & CSR_INT_BIT_HW_ERR) {
4561                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4562
4563                 /* Tell the device to stop sending interrupts */
4564                 iwl4965_disable_interrupts(priv);
4565
4566                 iwl4965_irq_handle_error(priv);
4567
4568                 handled |= CSR_INT_BIT_HW_ERR;
4569
4570                 spin_unlock_irqrestore(&priv->lock, flags);
4571
4572                 return;
4573         }
4574
4575 #ifdef CONFIG_IWLWIFI_DEBUG
4576         if (iwl_debug_level & (IWL_DL_ISR)) {
4577                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4578                 if (inta & CSR_INT_BIT_SCD)
4579                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4580                                       "the frame/frames.\n");
4581
4582                 /* Alive notification via Rx interrupt will do the real work */
4583                 if (inta & CSR_INT_BIT_ALIVE)
4584                         IWL_DEBUG_ISR("Alive interrupt\n");
4585         }
4586 #endif
4587         /* Safely ignore these bits for debug checks below */
4588         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4589
4590         /* HW RF KILL switch toggled */
4591         if (inta & CSR_INT_BIT_RF_KILL) {
4592                 int hw_rf_kill = 0;
4593                 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
4594                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4595                         hw_rf_kill = 1;
4596
4597                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4598                                 "RF_KILL bit toggled to %s.\n",
4599                                 hw_rf_kill ? "disable radio":"enable radio");
4600
4601                 /* Queue restart only if RF_KILL switch was set to "kill"
4602                  *   when we loaded driver, and is now set to "enable".
4603                  * After we're Alive, RF_KILL gets handled by
4604                  *   iwl4965_rx_card_state_notif() */
4605                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4606                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4607                         queue_work(priv->workqueue, &priv->restart);
4608                 }
4609
4610                 handled |= CSR_INT_BIT_RF_KILL;
4611         }
4612
4613         /* Chip got too hot and stopped itself */
4614         if (inta & CSR_INT_BIT_CT_KILL) {
4615                 IWL_ERROR("Microcode CT kill error detected.\n");
4616                 handled |= CSR_INT_BIT_CT_KILL;
4617         }
4618
4619         /* Error detected by uCode */
4620         if (inta & CSR_INT_BIT_SW_ERR) {
4621                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4622                           inta);
4623                 iwl4965_irq_handle_error(priv);
4624                 handled |= CSR_INT_BIT_SW_ERR;
4625         }
4626
4627         /* uCode wakes up after power-down sleep */
4628         if (inta & CSR_INT_BIT_WAKEUP) {
4629                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4630                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4631                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4632                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4633                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4634                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4635                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4636                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4637
4638                 handled |= CSR_INT_BIT_WAKEUP;
4639         }
4640
4641         /* All uCode command responses, including Tx command responses,
4642          * Rx "responses" (frame-received notification), and other
4643          * notifications from uCode come through here*/
4644         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4645                 iwl4965_rx_handle(priv);
4646                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4647         }
4648
4649         if (inta & CSR_INT_BIT_FH_TX) {
4650                 IWL_DEBUG_ISR("Tx interrupt\n");
4651                 handled |= CSR_INT_BIT_FH_TX;
4652         }
4653
4654         if (inta & ~handled)
4655                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4656
4657         if (inta & ~CSR_INI_SET_MASK) {
4658                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4659                          inta & ~CSR_INI_SET_MASK);
4660                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4661         }
4662
4663         /* Re-enable all interrupts */
4664         iwl4965_enable_interrupts(priv);
4665
4666 #ifdef CONFIG_IWLWIFI_DEBUG
4667         if (iwl_debug_level & (IWL_DL_ISR)) {
4668                 inta = iwl4965_read32(priv, CSR_INT);
4669                 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4670                 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4671                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4672                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4673         }
4674 #endif
4675         spin_unlock_irqrestore(&priv->lock, flags);
4676 }
4677
4678 static irqreturn_t iwl4965_isr(int irq, void *data)
4679 {
4680         struct iwl_priv *priv = data;
4681         u32 inta, inta_mask;
4682         u32 inta_fh;
4683         if (!priv)
4684                 return IRQ_NONE;
4685
4686         spin_lock(&priv->lock);
4687
4688         /* Disable (but don't clear!) interrupts here to avoid
4689          *    back-to-back ISRs and sporadic interrupts from our NIC.
4690          * If we have something to service, the tasklet will re-enable ints.
4691          * If we *don't* have something, we'll re-enable before leaving here. */
4692         inta_mask = iwl4965_read32(priv, CSR_INT_MASK);  /* just for debug */
4693         iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4694
4695         /* Discover which interrupts are active/pending */
4696         inta = iwl4965_read32(priv, CSR_INT);
4697         inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4698
4699         /* Ignore interrupt if there's nothing in NIC to service.
4700          * This may be due to IRQ shared with another device,
4701          * or due to sporadic interrupts thrown from our NIC. */
4702         if (!inta && !inta_fh) {
4703                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4704                 goto none;
4705         }
4706
4707         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4708                 /* Hardware disappeared. It might have already raised
4709                  * an interrupt */
4710                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4711                 goto unplugged;
4712         }
4713
4714         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4715                       inta, inta_mask, inta_fh);
4716
4717         inta &= ~CSR_INT_BIT_SCD;
4718
4719         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4720         if (likely(inta || inta_fh))
4721                 tasklet_schedule(&priv->irq_tasklet);
4722
4723  unplugged:
4724         spin_unlock(&priv->lock);
4725         return IRQ_HANDLED;
4726
4727  none:
4728         /* re-enable interrupts here since we don't have anything to service. */
4729         iwl4965_enable_interrupts(priv);
4730         spin_unlock(&priv->lock);
4731         return IRQ_NONE;
4732 }
4733
4734 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4735  * sending probe req.  This should be set long enough to hear probe responses
4736  * from more than one AP.  */
4737 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
4738 #define IWL_ACTIVE_DWELL_TIME_52    (10)
4739
4740 /* For faster active scanning, scan will move to the next channel if fewer than
4741  * PLCP_QUIET_THRESH packets are heard on this channel within
4742  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4743  * time if it's a quiet channel (nothing responded to our probe, and there's
4744  * no other traffic).
4745  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4746 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4747 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
4748
4749 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4750  * Must be set longer than active dwell time.
4751  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4752 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4753 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4754 #define IWL_PASSIVE_DWELL_BASE      (100)
4755 #define IWL_CHANNEL_TUNE_TIME       5
4756
4757 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4758                                                 enum ieee80211_band band)
4759 {
4760         if (band == IEEE80211_BAND_5GHZ)
4761                 return IWL_ACTIVE_DWELL_TIME_52;
4762         else
4763                 return IWL_ACTIVE_DWELL_TIME_24;
4764 }
4765
4766 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4767                                           enum ieee80211_band band)
4768 {
4769         u16 active = iwl4965_get_active_dwell_time(priv, band);
4770         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4771             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4772             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4773
4774         if (iwl4965_is_associated(priv)) {
4775                 /* If we're associated, we clamp the maximum passive
4776                  * dwell time to be 98% of the beacon interval (minus
4777                  * 2 * channel tune time) */
4778                 passive = priv->beacon_int;
4779                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4780                         passive = IWL_PASSIVE_DWELL_BASE;
4781                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4782         }
4783
4784         if (passive <= active)
4785                 passive = active + 1;
4786
4787         return passive;
4788 }
4789
4790 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4791                                          enum ieee80211_band band,
4792                                      u8 is_active, u8 direct_mask,
4793                                      struct iwl4965_scan_channel *scan_ch)
4794 {
4795         const struct ieee80211_channel *channels = NULL;
4796         const struct ieee80211_supported_band *sband;
4797         const struct iwl_channel_info *ch_info;
4798         u16 passive_dwell = 0;
4799         u16 active_dwell = 0;
4800         int added, i;
4801
4802         sband = iwl4965_get_hw_mode(priv, band);
4803         if (!sband)
4804                 return 0;
4805
4806         channels = sband->channels;
4807
4808         active_dwell = iwl4965_get_active_dwell_time(priv, band);
4809         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4810
4811         for (i = 0, added = 0; i < sband->n_channels; i++) {
4812                 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
4813                     le16_to_cpu(priv->active_rxon.channel)) {
4814                         if (iwl4965_is_associated(priv)) {
4815                                 IWL_DEBUG_SCAN
4816                                     ("Skipping current channel %d\n",
4817                                      le16_to_cpu(priv->active_rxon.channel));
4818                                 continue;
4819                         }
4820                 } else if (priv->only_active_channel)
4821                         continue;
4822
4823                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4824
4825                 ch_info = iwl_get_channel_info(priv, band,
4826                                          scan_ch->channel);
4827                 if (!is_channel_valid(ch_info)) {
4828                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4829                                        scan_ch->channel);
4830                         continue;
4831                 }
4832
4833                 if (!is_active || is_channel_passive(ch_info) ||
4834                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4835                         scan_ch->type = 0;      /* passive */
4836                 else
4837                         scan_ch->type = 1;      /* active */
4838
4839                 if (scan_ch->type & 1)
4840                         scan_ch->type |= (direct_mask << 1);
4841
4842                 if (is_channel_narrow(ch_info))
4843                         scan_ch->type |= (1 << 7);
4844
4845                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4846                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4847
4848                 /* Set txpower levels to defaults */
4849                 scan_ch->tpc.dsp_atten = 110;
4850                 /* scan_pwr_info->tpc.dsp_atten; */
4851
4852                 /*scan_pwr_info->tpc.tx_gain; */
4853                 if (band == IEEE80211_BAND_5GHZ)
4854                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4855                 else {
4856                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4857                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4858                          * power level:
4859                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4860                          */
4861                 }
4862
4863                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4864                                scan_ch->channel,
4865                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4866                                (scan_ch->type & 1) ?
4867                                active_dwell : passive_dwell);
4868
4869                 scan_ch++;
4870                 added++;
4871         }
4872
4873         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4874         return added;
4875 }
4876
4877 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4878                               struct ieee80211_rate *rates)
4879 {
4880         int i;
4881
4882         for (i = 0; i < IWL_RATE_COUNT; i++) {
4883                 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4884                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4885                 rates[i].hw_value_short = i;
4886                 rates[i].flags = 0;
4887                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4888                         /*
4889                          * If CCK != 1M then set short preamble rate flag.
4890                          */
4891                         rates[i].flags |=
4892                                 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4893                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
4894                 }
4895         }
4896 }
4897
4898 /**
4899  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4900  */
4901 int iwl4965_init_geos(struct iwl_priv *priv)
4902 {
4903         struct iwl_channel_info *ch;
4904         struct ieee80211_supported_band *sband;
4905         struct ieee80211_channel *channels;
4906         struct ieee80211_channel *geo_ch;
4907         struct ieee80211_rate *rates;
4908         int i = 0;
4909
4910         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4911             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4912                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4913                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4914                 return 0;
4915         }
4916
4917         channels = kzalloc(sizeof(struct ieee80211_channel) *
4918                            priv->channel_count, GFP_KERNEL);
4919         if (!channels)
4920                 return -ENOMEM;
4921
4922         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4923                         GFP_KERNEL);
4924         if (!rates) {
4925                 kfree(channels);
4926                 return -ENOMEM;
4927         }
4928
4929         /* 5.2GHz channels start after the 2.4GHz channels */
4930         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4931         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4932         /* just OFDM */
4933         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4934         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4935
4936         iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_5GHZ);
4937
4938         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4939         sband->channels = channels;
4940         /* OFDM & CCK */
4941         sband->bitrates = rates;
4942         sband->n_bitrates = IWL_RATE_COUNT;
4943
4944         iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_2GHZ);
4945
4946         priv->ieee_channels = channels;
4947         priv->ieee_rates = rates;
4948
4949         iwl4965_init_hw_rates(priv, rates);
4950
4951         for (i = 0;  i < priv->channel_count; i++) {
4952                 ch = &priv->channel_info[i];
4953
4954                 /* FIXME: might be removed if scan is OK */
4955                 if (!is_channel_valid(ch))
4956                         continue;
4957
4958                 if (is_channel_a_band(ch))
4959                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4960                 else
4961                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4962
4963                 geo_ch = &sband->channels[sband->n_channels++];
4964
4965                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4966                 geo_ch->max_power = ch->max_power_avg;
4967                 geo_ch->max_antenna_gain = 0xff;
4968                 geo_ch->hw_value = ch->channel;
4969
4970                 if (is_channel_valid(ch)) {
4971                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4972                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4973
4974                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4975                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4976
4977                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4978                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4979
4980                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4981                                 priv->max_channel_txpower_limit =
4982                                     ch->max_power_avg;
4983                 } else {
4984                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4985                 }
4986
4987                 /* Save flags for reg domain usage */
4988                 geo_ch->orig_flags = geo_ch->flags;
4989
4990                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4991                                 ch->channel, geo_ch->center_freq,
4992                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4993                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4994                                 "restricted" : "valid",
4995                                  geo_ch->flags);
4996         }
4997
4998         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4999              priv->cfg->sku & IWL_SKU_A) {
5000                 printk(KERN_INFO DRV_NAME
5001                        ": Incorrectly detected BG card as ABG.  Please send "
5002                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5003                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5004                 priv->cfg->sku &= ~IWL_SKU_A;
5005         }
5006
5007         printk(KERN_INFO DRV_NAME
5008                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5009                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5010                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5011
5012         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5013         priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5014
5015         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5016
5017         return 0;
5018 }
5019
5020 /*
5021  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5022  */
5023 void iwl4965_free_geos(struct iwl_priv *priv)
5024 {
5025         kfree(priv->ieee_channels);
5026         kfree(priv->ieee_rates);
5027         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5028 }
5029
5030 /******************************************************************************
5031  *
5032  * uCode download functions
5033  *
5034  ******************************************************************************/
5035
5036 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
5037 {
5038         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5039         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5040         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5041         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5042         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5043         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5044 }
5045
5046 /**
5047  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5048  *     looking at all data.
5049  */
5050 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
5051                                  u32 len)
5052 {
5053         u32 val;
5054         u32 save_len = len;
5055         int rc = 0;
5056         u32 errcnt;
5057
5058         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5059
5060         rc = iwl4965_grab_nic_access(priv);
5061         if (rc)
5062                 return rc;
5063
5064         iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5065
5066         errcnt = 0;
5067         for (; len > 0; len -= sizeof(u32), image++) {
5068                 /* read data comes through single port, auto-incr addr */
5069                 /* NOTE: Use the debugless read so we don't flood kernel log
5070                  * if IWL_DL_IO is set */
5071                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5072                 if (val != le32_to_cpu(*image)) {
5073                         IWL_ERROR("uCode INST section is invalid at "
5074                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5075                                   save_len - len, val, le32_to_cpu(*image));
5076                         rc = -EIO;
5077                         errcnt++;
5078                         if (errcnt >= 20)
5079                                 break;
5080                 }
5081         }
5082
5083         iwl4965_release_nic_access(priv);
5084
5085         if (!errcnt)
5086                 IWL_DEBUG_INFO
5087                     ("ucode image in INSTRUCTION memory is good\n");
5088
5089         return rc;
5090 }
5091
5092
5093 /**
5094  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5095  *   using sample data 100 bytes apart.  If these sample points are good,
5096  *   it's a pretty good bet that everything between them is good, too.
5097  */
5098 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5099 {
5100         u32 val;
5101         int rc = 0;
5102         u32 errcnt = 0;
5103         u32 i;
5104
5105         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5106
5107         rc = iwl4965_grab_nic_access(priv);
5108         if (rc)
5109                 return rc;
5110
5111         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5112                 /* read data comes through single port, auto-incr addr */
5113                 /* NOTE: Use the debugless read so we don't flood kernel log
5114                  * if IWL_DL_IO is set */
5115                 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5116                         i + RTC_INST_LOWER_BOUND);
5117                 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5118                 if (val != le32_to_cpu(*image)) {
5119 #if 0 /* Enable this if you want to see details */
5120                         IWL_ERROR("uCode INST section is invalid at "
5121                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5122                                   i, val, *image);
5123 #endif
5124                         rc = -EIO;
5125                         errcnt++;
5126                         if (errcnt >= 3)
5127                                 break;
5128                 }
5129         }
5130
5131         iwl4965_release_nic_access(priv);
5132
5133         return rc;
5134 }
5135
5136
5137 /**
5138  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5139  *    and verify its contents
5140  */
5141 static int iwl4965_verify_ucode(struct iwl_priv *priv)
5142 {
5143         __le32 *image;
5144         u32 len;
5145         int rc = 0;
5146
5147         /* Try bootstrap */
5148         image = (__le32 *)priv->ucode_boot.v_addr;
5149         len = priv->ucode_boot.len;
5150         rc = iwl4965_verify_inst_sparse(priv, image, len);
5151         if (rc == 0) {
5152                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5153                 return 0;
5154         }
5155
5156         /* Try initialize */
5157         image = (__le32 *)priv->ucode_init.v_addr;
5158         len = priv->ucode_init.len;
5159         rc = iwl4965_verify_inst_sparse(priv, image, len);
5160         if (rc == 0) {
5161                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5162                 return 0;
5163         }
5164
5165         /* Try runtime/protocol */
5166         image = (__le32 *)priv->ucode_code.v_addr;
5167         len = priv->ucode_code.len;
5168         rc = iwl4965_verify_inst_sparse(priv, image, len);
5169         if (rc == 0) {
5170                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5171                 return 0;
5172         }
5173
5174         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5175
5176         /* Since nothing seems to match, show first several data entries in
5177          * instruction SRAM, so maybe visual inspection will give a clue.
5178          * Selection of bootstrap image (vs. other images) is arbitrary. */
5179         image = (__le32 *)priv->ucode_boot.v_addr;
5180         len = priv->ucode_boot.len;
5181         rc = iwl4965_verify_inst_full(priv, image, len);
5182
5183         return rc;
5184 }
5185
5186
5187 /* check contents of special bootstrap uCode SRAM */
5188 static int iwl4965_verify_bsm(struct iwl_priv *priv)
5189 {
5190         __le32 *image = priv->ucode_boot.v_addr;
5191         u32 len = priv->ucode_boot.len;
5192         u32 reg;
5193         u32 val;
5194
5195         IWL_DEBUG_INFO("Begin verify bsm\n");
5196
5197         /* verify BSM SRAM contents */
5198         val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
5199         for (reg = BSM_SRAM_LOWER_BOUND;
5200              reg < BSM_SRAM_LOWER_BOUND + len;
5201              reg += sizeof(u32), image ++) {
5202                 val = iwl4965_read_prph(priv, reg);
5203                 if (val != le32_to_cpu(*image)) {
5204                         IWL_ERROR("BSM uCode verification failed at "
5205                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5206                                   BSM_SRAM_LOWER_BOUND,
5207                                   reg - BSM_SRAM_LOWER_BOUND, len,
5208                                   val, le32_to_cpu(*image));
5209                         return -EIO;
5210                 }
5211         }
5212
5213         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5214
5215         return 0;
5216 }
5217
5218 /**
5219  * iwl4965_load_bsm - Load bootstrap instructions
5220  *
5221  * BSM operation:
5222  *
5223  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5224  * in special SRAM that does not power down during RFKILL.  When powering back
5225  * up after power-saving sleeps (or during initial uCode load), the BSM loads
5226  * the bootstrap program into the on-board processor, and starts it.
5227  *
5228  * The bootstrap program loads (via DMA) instructions and data for a new
5229  * program from host DRAM locations indicated by the host driver in the
5230  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
5231  * automatically.
5232  *
5233  * When initializing the NIC, the host driver points the BSM to the
5234  * "initialize" uCode image.  This uCode sets up some internal data, then
5235  * notifies host via "initialize alive" that it is complete.
5236  *
5237  * The host then replaces the BSM_DRAM_* pointer values to point to the
5238  * normal runtime uCode instructions and a backup uCode data cache buffer
5239  * (filled initially with starting data values for the on-board processor),
5240  * then triggers the "initialize" uCode to load and launch the runtime uCode,
5241  * which begins normal operation.
5242  *
5243  * When doing a power-save shutdown, runtime uCode saves data SRAM into
5244  * the backup data cache in DRAM before SRAM is powered down.
5245  *
5246  * When powering back up, the BSM loads the bootstrap program.  This reloads
5247  * the runtime uCode instructions and the backup data cache into SRAM,
5248  * and re-launches the runtime uCode from where it left off.
5249  */
5250 static int iwl4965_load_bsm(struct iwl_priv *priv)
5251 {
5252         __le32 *image = priv->ucode_boot.v_addr;
5253         u32 len = priv->ucode_boot.len;
5254         dma_addr_t pinst;
5255         dma_addr_t pdata;
5256         u32 inst_len;
5257         u32 data_len;
5258         int rc;
5259         int i;
5260         u32 done;
5261         u32 reg_offset;
5262
5263         IWL_DEBUG_INFO("Begin load bsm\n");
5264
5265         /* make sure bootstrap program is no larger than BSM's SRAM size */
5266         if (len > IWL_MAX_BSM_SIZE)
5267                 return -EINVAL;
5268
5269         /* Tell bootstrap uCode where to find the "Initialize" uCode
5270          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5271          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
5272          *        after the "initialize" uCode has run, to point to
5273          *        runtime/protocol instructions and backup data cache. */
5274         pinst = priv->ucode_init.p_addr >> 4;
5275         pdata = priv->ucode_init_data.p_addr >> 4;
5276         inst_len = priv->ucode_init.len;
5277         data_len = priv->ucode_init_data.len;
5278
5279         rc = iwl4965_grab_nic_access(priv);
5280         if (rc)
5281                 return rc;
5282
5283         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5284         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5285         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5286         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5287
5288         /* Fill BSM memory with bootstrap instructions */
5289         for (reg_offset = BSM_SRAM_LOWER_BOUND;
5290              reg_offset < BSM_SRAM_LOWER_BOUND + len;
5291              reg_offset += sizeof(u32), image++)
5292                 _iwl4965_write_prph(priv, reg_offset,
5293                                           le32_to_cpu(*image));
5294
5295         rc = iwl4965_verify_bsm(priv);
5296         if (rc) {
5297                 iwl4965_release_nic_access(priv);
5298                 return rc;
5299         }
5300
5301         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5302         iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5303         iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
5304                                  RTC_INST_LOWER_BOUND);
5305         iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5306
5307         /* Load bootstrap code into instruction SRAM now,
5308          *   to prepare to load "initialize" uCode */
5309         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5310                 BSM_WR_CTRL_REG_BIT_START);
5311
5312         /* Wait for load of bootstrap uCode to finish */
5313         for (i = 0; i < 100; i++) {
5314                 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
5315                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5316                         break;
5317                 udelay(10);
5318         }
5319         if (i < 100)
5320                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5321         else {
5322                 IWL_ERROR("BSM write did not complete!\n");
5323                 return -EIO;
5324         }
5325
5326         /* Enable future boot loads whenever power management unit triggers it
5327          *   (e.g. when powering back up after power-save shutdown) */
5328         iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5329                 BSM_WR_CTRL_REG_BIT_START_EN);
5330
5331         iwl4965_release_nic_access(priv);
5332
5333         return 0;
5334 }
5335
5336 static void iwl4965_nic_start(struct iwl_priv *priv)
5337 {
5338         /* Remove all resets to allow NIC to operate */
5339         iwl4965_write32(priv, CSR_RESET, 0);
5340 }
5341
5342
5343 /**
5344  * iwl4965_read_ucode - Read uCode images from disk file.
5345  *
5346  * Copy into buffers for card to fetch via bus-mastering
5347  */
5348 static int iwl4965_read_ucode(struct iwl_priv *priv)
5349 {
5350         struct iwl4965_ucode *ucode;
5351         int ret;
5352         const struct firmware *ucode_raw;
5353         const char *name = priv->cfg->fw_name;
5354         u8 *src;
5355         size_t len;
5356         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5357
5358         /* Ask kernel firmware_class module to get the boot firmware off disk.
5359          * request_firmware() is synchronous, file is in memory on return. */
5360         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5361         if (ret < 0) {
5362                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5363                                         name, ret);
5364                 goto error;
5365         }
5366
5367         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5368                        name, ucode_raw->size);
5369
5370         /* Make sure that we got at least our header! */
5371         if (ucode_raw->size < sizeof(*ucode)) {
5372                 IWL_ERROR("File size way too small!\n");
5373                 ret = -EINVAL;
5374                 goto err_release;
5375         }
5376
5377         /* Data from ucode file:  header followed by uCode images */
5378         ucode = (void *)ucode_raw->data;
5379
5380         ver = le32_to_cpu(ucode->ver);
5381         inst_size = le32_to_cpu(ucode->inst_size);
5382         data_size = le32_to_cpu(ucode->data_size);
5383         init_size = le32_to_cpu(ucode->init_size);
5384         init_data_size = le32_to_cpu(ucode->init_data_size);
5385         boot_size = le32_to_cpu(ucode->boot_size);
5386
5387         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5388         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5389                        inst_size);
5390         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5391                        data_size);
5392         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5393                        init_size);
5394         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5395                        init_data_size);
5396         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5397                        boot_size);
5398
5399         /* Verify size of file vs. image size info in file's header */
5400         if (ucode_raw->size < sizeof(*ucode) +
5401                 inst_size + data_size + init_size +
5402                 init_data_size + boot_size) {
5403
5404                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5405                                (int)ucode_raw->size);
5406                 ret = -EINVAL;
5407                 goto err_release;
5408         }
5409
5410         /* Verify that uCode images will fit in card's SRAM */
5411         if (inst_size > IWL_MAX_INST_SIZE) {
5412                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5413                                inst_size);
5414                 ret = -EINVAL;
5415                 goto err_release;
5416         }
5417
5418         if (data_size > IWL_MAX_DATA_SIZE) {
5419                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5420                                 data_size);
5421                 ret = -EINVAL;
5422                 goto err_release;
5423         }
5424         if (init_size > IWL_MAX_INST_SIZE) {
5425                 IWL_DEBUG_INFO
5426                     ("uCode init instr len %d too large to fit in\n",
5427                       init_size);
5428                 ret = -EINVAL;
5429                 goto err_release;
5430         }
5431         if (init_data_size > IWL_MAX_DATA_SIZE) {
5432                 IWL_DEBUG_INFO
5433                     ("uCode init data len %d too large to fit in\n",
5434                       init_data_size);
5435                 ret = -EINVAL;
5436                 goto err_release;
5437         }
5438         if (boot_size > IWL_MAX_BSM_SIZE) {
5439                 IWL_DEBUG_INFO
5440                     ("uCode boot instr len %d too large to fit in\n",
5441                       boot_size);
5442                 ret = -EINVAL;
5443                 goto err_release;
5444         }
5445
5446         /* Allocate ucode buffers for card's bus-master loading ... */
5447
5448         /* Runtime instructions and 2 copies of data:
5449          * 1) unmodified from disk
5450          * 2) backup cache for save/restore during power-downs */
5451         priv->ucode_code.len = inst_size;
5452         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5453
5454         priv->ucode_data.len = data_size;
5455         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5456
5457         priv->ucode_data_backup.len = data_size;
5458         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5459
5460         /* Initialization instructions and data */
5461         if (init_size && init_data_size) {
5462                 priv->ucode_init.len = init_size;
5463                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5464
5465                 priv->ucode_init_data.len = init_data_size;
5466                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5467
5468                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5469                         goto err_pci_alloc;
5470         }
5471
5472         /* Bootstrap (instructions only, no data) */
5473         if (boot_size) {
5474                 priv->ucode_boot.len = boot_size;
5475                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5476
5477                 if (!priv->ucode_boot.v_addr)
5478                         goto err_pci_alloc;
5479         }
5480
5481         /* Copy images into buffers for card's bus-master reads ... */
5482
5483         /* Runtime instructions (first block of data in file) */
5484         src = &ucode->data[0];
5485         len = priv->ucode_code.len;
5486         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5487         memcpy(priv->ucode_code.v_addr, src, len);
5488         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5489                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5490
5491         /* Runtime data (2nd block)
5492          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
5493         src = &ucode->data[inst_size];
5494         len = priv->ucode_data.len;
5495         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5496         memcpy(priv->ucode_data.v_addr, src, len);
5497         memcpy(priv->ucode_data_backup.v_addr, src, len);
5498
5499         /* Initialization instructions (3rd block) */
5500         if (init_size) {
5501                 src = &ucode->data[inst_size + data_size];
5502                 len = priv->ucode_init.len;
5503                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5504                                 len);
5505                 memcpy(priv->ucode_init.v_addr, src, len);
5506         }
5507
5508         /* Initialization data (4th block) */
5509         if (init_data_size) {
5510                 src = &ucode->data[inst_size + data_size + init_size];
5511                 len = priv->ucode_init_data.len;
5512                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5513                                len);
5514                 memcpy(priv->ucode_init_data.v_addr, src, len);
5515         }
5516
5517         /* Bootstrap instructions (5th block) */
5518         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5519         len = priv->ucode_boot.len;
5520         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5521         memcpy(priv->ucode_boot.v_addr, src, len);
5522
5523         /* We have our copies now, allow OS release its copies */
5524         release_firmware(ucode_raw);
5525         return 0;
5526
5527  err_pci_alloc:
5528         IWL_ERROR("failed to allocate pci memory\n");
5529         ret = -ENOMEM;
5530         iwl4965_dealloc_ucode_pci(priv);
5531
5532  err_release:
5533         release_firmware(ucode_raw);
5534
5535  error:
5536         return ret;
5537 }
5538
5539
5540 /**
5541  * iwl4965_set_ucode_ptrs - Set uCode address location
5542  *
5543  * Tell initialization uCode where to find runtime uCode.
5544  *
5545  * BSM registers initially contain pointers to initialization uCode.
5546  * We need to replace them to load runtime uCode inst and data,
5547  * and to save runtime data when powering down.
5548  */
5549 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5550 {
5551         dma_addr_t pinst;
5552         dma_addr_t pdata;
5553         int rc = 0;
5554         unsigned long flags;
5555
5556         /* bits 35:4 for 4965 */
5557         pinst = priv->ucode_code.p_addr >> 4;
5558         pdata = priv->ucode_data_backup.p_addr >> 4;
5559
5560         spin_lock_irqsave(&priv->lock, flags);
5561         rc = iwl4965_grab_nic_access(priv);
5562         if (rc) {
5563                 spin_unlock_irqrestore(&priv->lock, flags);
5564                 return rc;
5565         }
5566
5567         /* Tell bootstrap uCode where to find image to load */
5568         iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5569         iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5570         iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5571                                  priv->ucode_data.len);
5572
5573         /* Inst bytecount must be last to set up, bit 31 signals uCode
5574          *   that all new ptr/size info is in place */
5575         iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5576                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5577
5578         iwl4965_release_nic_access(priv);
5579
5580         spin_unlock_irqrestore(&priv->lock, flags);
5581
5582         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5583
5584         return rc;
5585 }
5586
5587 /**
5588  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5589  *
5590  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5591  *
5592  * The 4965 "initialize" ALIVE reply contains calibration data for:
5593  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
5594  *   (3945 does not contain this data).
5595  *
5596  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5597 */
5598 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5599 {
5600         /* Check alive response for "valid" sign from uCode */
5601         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5602                 /* We had an error bringing up the hardware, so take it
5603                  * all the way back down so we can try again */
5604                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5605                 goto restart;
5606         }
5607
5608         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5609          * This is a paranoid check, because we would not have gotten the
5610          * "initialize" alive if code weren't properly loaded.  */
5611         if (iwl4965_verify_ucode(priv)) {
5612                 /* Runtime instruction load was bad;
5613                  * take it all the way back down so we can try again */
5614                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5615                 goto restart;
5616         }
5617
5618         /* Calculate temperature */
5619         priv->temperature = iwl4965_get_temperature(priv);
5620
5621         /* Send pointers to protocol/runtime uCode image ... init code will
5622          * load and launch runtime uCode, which will send us another "Alive"
5623          * notification. */
5624         IWL_DEBUG_INFO("Initialization Alive received.\n");
5625         if (iwl4965_set_ucode_ptrs(priv)) {
5626                 /* Runtime instruction load won't happen;
5627                  * take it all the way back down so we can try again */
5628                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5629                 goto restart;
5630         }
5631         return;
5632
5633  restart:
5634         queue_work(priv->workqueue, &priv->restart);
5635 }
5636
5637
5638 /**
5639  * iwl4965_alive_start - called after REPLY_ALIVE notification received
5640  *                   from protocol/runtime uCode (initialization uCode's
5641  *                   Alive gets handled by iwl4965_init_alive_start()).
5642  */
5643 static void iwl4965_alive_start(struct iwl_priv *priv)
5644 {
5645         int rc = 0;
5646
5647         IWL_DEBUG_INFO("Runtime Alive received.\n");
5648
5649         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5650                 /* We had an error bringing up the hardware, so take it
5651                  * all the way back down so we can try again */
5652                 IWL_DEBUG_INFO("Alive failed.\n");
5653                 goto restart;
5654         }
5655
5656         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5657          * This is a paranoid check, because we would not have gotten the
5658          * "runtime" alive if code weren't properly loaded.  */
5659         if (iwl4965_verify_ucode(priv)) {
5660                 /* Runtime instruction load was bad;
5661                  * take it all the way back down so we can try again */
5662                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5663                 goto restart;
5664         }
5665
5666         iwlcore_clear_stations_table(priv);
5667
5668         rc = iwl4965_alive_notify(priv);
5669         if (rc) {
5670                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5671                             rc);
5672                 goto restart;
5673         }
5674
5675         /* After the ALIVE response, we can send host commands to 4965 uCode */
5676         set_bit(STATUS_ALIVE, &priv->status);
5677
5678         /* Clear out the uCode error bit if it is set */
5679         clear_bit(STATUS_FW_ERROR, &priv->status);
5680
5681         if (iwl4965_is_rfkill(priv))
5682                 return;
5683
5684         ieee80211_start_queues(priv->hw);
5685
5686         priv->active_rate = priv->rates_mask;
5687         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5688
5689         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5690
5691         if (iwl4965_is_associated(priv)) {
5692                 struct iwl4965_rxon_cmd *active_rxon =
5693                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5694
5695                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5696                        sizeof(priv->staging_rxon));
5697                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5698         } else {
5699                 /* Initialize our rx_config data */
5700                 iwl4965_connection_init_rx_config(priv);
5701                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5702         }
5703
5704         /* Configure Bluetooth device coexistence support */
5705         iwl4965_send_bt_config(priv);
5706
5707         /* Configure the adapter for unassociated operation */
5708         iwl4965_commit_rxon(priv);
5709
5710         /* At this point, the NIC is initialized and operational */
5711         priv->notif_missed_beacons = 0;
5712         set_bit(STATUS_READY, &priv->status);
5713
5714         iwl4965_rf_kill_ct_config(priv);
5715
5716         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5717         wake_up_interruptible(&priv->wait_command_queue);
5718
5719         if (priv->error_recovering)
5720                 iwl4965_error_recovery(priv);
5721
5722         return;
5723
5724  restart:
5725         queue_work(priv->workqueue, &priv->restart);
5726 }
5727
5728 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5729
5730 static void __iwl4965_down(struct iwl_priv *priv)
5731 {
5732         unsigned long flags;
5733         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5734         struct ieee80211_conf *conf = NULL;
5735
5736         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5737
5738         conf = ieee80211_get_hw_conf(priv->hw);
5739
5740         if (!exit_pending)
5741                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5742
5743         iwlcore_clear_stations_table(priv);
5744
5745         /* Unblock any waiting calls */
5746         wake_up_interruptible_all(&priv->wait_command_queue);
5747
5748         /* Wipe out the EXIT_PENDING status bit if we are not actually
5749          * exiting the module */
5750         if (!exit_pending)
5751                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5752
5753         /* stop and reset the on-board processor */
5754         iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5755
5756         /* tell the device to stop sending interrupts */
5757         iwl4965_disable_interrupts(priv);
5758
5759         if (priv->mac80211_registered)
5760                 ieee80211_stop_queues(priv->hw);
5761
5762         /* If we have not previously called iwl4965_init() then
5763          * clear all bits but the RF Kill and SUSPEND bits and return */
5764         if (!iwl4965_is_init(priv)) {
5765                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5766                                         STATUS_RF_KILL_HW |
5767                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5768                                         STATUS_RF_KILL_SW |
5769                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5770                                         STATUS_GEO_CONFIGURED |
5771                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5772                                         STATUS_IN_SUSPEND;
5773                 goto exit;
5774         }
5775
5776         /* ...otherwise clear out all the status bits but the RF Kill and
5777          * SUSPEND bits and continue taking the NIC down. */
5778         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5779                                 STATUS_RF_KILL_HW |
5780                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5781                                 STATUS_RF_KILL_SW |
5782                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5783                                 STATUS_GEO_CONFIGURED |
5784                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5785                                 STATUS_IN_SUSPEND |
5786                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5787                                 STATUS_FW_ERROR;
5788
5789         spin_lock_irqsave(&priv->lock, flags);
5790         iwl4965_clear_bit(priv, CSR_GP_CNTRL,
5791                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5792         spin_unlock_irqrestore(&priv->lock, flags);
5793
5794         iwl4965_hw_txq_ctx_stop(priv);
5795         iwl4965_hw_rxq_stop(priv);
5796
5797         spin_lock_irqsave(&priv->lock, flags);
5798         if (!iwl4965_grab_nic_access(priv)) {
5799                 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
5800                                          APMG_CLK_VAL_DMA_CLK_RQT);
5801                 iwl4965_release_nic_access(priv);
5802         }
5803         spin_unlock_irqrestore(&priv->lock, flags);
5804
5805         udelay(5);
5806
5807         iwl4965_hw_nic_stop_master(priv);
5808         iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5809         iwl4965_hw_nic_reset(priv);
5810
5811  exit:
5812         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5813
5814         if (priv->ibss_beacon)
5815                 dev_kfree_skb(priv->ibss_beacon);
5816         priv->ibss_beacon = NULL;
5817
5818         /* clear out any free frames */
5819         iwl4965_clear_free_frames(priv);
5820 }
5821
5822 static void iwl4965_down(struct iwl_priv *priv)
5823 {
5824         mutex_lock(&priv->mutex);
5825         __iwl4965_down(priv);
5826         mutex_unlock(&priv->mutex);
5827
5828         iwl4965_cancel_deferred_work(priv);
5829 }
5830
5831 #define MAX_HW_RESTARTS 5
5832
5833 static int __iwl4965_up(struct iwl_priv *priv)
5834 {
5835         int rc, i;
5836
5837         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5838                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5839                 return -EIO;
5840         }
5841
5842         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5843                 IWL_WARNING("Radio disabled by SW RF kill (module "
5844                             "parameter)\n");
5845                 return -ENODEV;
5846         }
5847
5848         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5849                 IWL_ERROR("ucode not available for device bringup\n");
5850                 return -EIO;
5851         }
5852
5853         /* If platform's RF_KILL switch is NOT set to KILL */
5854         if (iwl4965_read32(priv, CSR_GP_CNTRL) &
5855                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5856                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5857         else {
5858                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5859                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5860                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5861                         return -ENODEV;
5862                 }
5863         }
5864
5865         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
5866
5867         rc = iwl4965_hw_nic_init(priv);
5868         if (rc) {
5869                 IWL_ERROR("Unable to int nic\n");
5870                 return rc;
5871         }
5872
5873         /* make sure rfkill handshake bits are cleared */
5874         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5875         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5876                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5877
5878         /* clear (again), then enable host interrupts */
5879         iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
5880         iwl4965_enable_interrupts(priv);
5881
5882         /* really make sure rfkill handshake bits are cleared */
5883         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5884         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5885
5886         /* Copy original ucode data image from disk into backup cache.
5887          * This will be used to initialize the on-board processor's
5888          * data SRAM for a clean start when the runtime program first loads. */
5889         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5890                priv->ucode_data.len);
5891
5892         /* We return success when we resume from suspend and rf_kill is on. */
5893         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5894                 return 0;
5895
5896         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5897
5898                 iwlcore_clear_stations_table(priv);
5899
5900                 /* load bootstrap state machine,
5901                  * load bootstrap program into processor's memory,
5902                  * prepare to load the "initialize" uCode */
5903                 rc = iwl4965_load_bsm(priv);
5904
5905                 if (rc) {
5906                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5907                         continue;
5908                 }
5909
5910                 /* start card; "initialize" will load runtime ucode */
5911                 iwl4965_nic_start(priv);
5912
5913                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5914
5915                 return 0;
5916         }
5917
5918         set_bit(STATUS_EXIT_PENDING, &priv->status);
5919         __iwl4965_down(priv);
5920
5921         /* tried to restart and config the device for as long as our
5922          * patience could withstand */
5923         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5924         return -EIO;
5925 }
5926
5927
5928 /*****************************************************************************
5929  *
5930  * Workqueue callbacks
5931  *
5932  *****************************************************************************/
5933
5934 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5935 {
5936         struct iwl_priv *priv =
5937             container_of(data, struct iwl_priv, init_alive_start.work);
5938
5939         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5940                 return;
5941
5942         mutex_lock(&priv->mutex);
5943         iwl4965_init_alive_start(priv);
5944         mutex_unlock(&priv->mutex);
5945 }
5946
5947 static void iwl4965_bg_alive_start(struct work_struct *data)
5948 {
5949         struct iwl_priv *priv =
5950             container_of(data, struct iwl_priv, alive_start.work);
5951
5952         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5953                 return;
5954
5955         mutex_lock(&priv->mutex);
5956         iwl4965_alive_start(priv);
5957         mutex_unlock(&priv->mutex);
5958 }
5959
5960 static void iwl4965_bg_rf_kill(struct work_struct *work)
5961 {
5962         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5963
5964         wake_up_interruptible(&priv->wait_command_queue);
5965
5966         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5967                 return;
5968
5969         mutex_lock(&priv->mutex);
5970
5971         if (!iwl4965_is_rfkill(priv)) {
5972                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5973                           "HW and/or SW RF Kill no longer active, restarting "
5974                           "device\n");
5975                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5976                         queue_work(priv->workqueue, &priv->restart);
5977         } else {
5978
5979                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5980                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5981                                           "disabled by SW switch\n");
5982                 else
5983                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5984                                     "Kill switch must be turned off for "
5985                                     "wireless networking to work.\n");
5986         }
5987         mutex_unlock(&priv->mutex);
5988 }
5989
5990 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5991
5992 static void iwl4965_bg_scan_check(struct work_struct *data)
5993 {
5994         struct iwl_priv *priv =
5995             container_of(data, struct iwl_priv, scan_check.work);
5996
5997         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5998                 return;
5999
6000         mutex_lock(&priv->mutex);
6001         if (test_bit(STATUS_SCANNING, &priv->status) ||
6002             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6003                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6004                           "Scan completion watchdog resetting adapter (%dms)\n",
6005                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6006
6007                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6008                         iwl4965_send_scan_abort(priv);
6009         }
6010         mutex_unlock(&priv->mutex);
6011 }
6012
6013 static void iwl4965_bg_request_scan(struct work_struct *data)
6014 {
6015         struct iwl_priv *priv =
6016             container_of(data, struct iwl_priv, request_scan);
6017         struct iwl_host_cmd cmd = {
6018                 .id = REPLY_SCAN_CMD,
6019                 .len = sizeof(struct iwl4965_scan_cmd),
6020                 .meta.flags = CMD_SIZE_HUGE,
6021         };
6022         struct iwl4965_scan_cmd *scan;
6023         struct ieee80211_conf *conf = NULL;
6024         u16 cmd_len;
6025         enum ieee80211_band band;
6026         u8 direct_mask;
6027         int ret = 0;
6028
6029         conf = ieee80211_get_hw_conf(priv->hw);
6030
6031         mutex_lock(&priv->mutex);
6032
6033         if (!iwl4965_is_ready(priv)) {
6034                 IWL_WARNING("request scan called when driver not ready.\n");
6035                 goto done;
6036         }
6037
6038         /* Make sure the scan wasn't cancelled before this queued work
6039          * was given the chance to run... */
6040         if (!test_bit(STATUS_SCANNING, &priv->status))
6041                 goto done;
6042
6043         /* This should never be called or scheduled if there is currently
6044          * a scan active in the hardware. */
6045         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6046                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6047                                "Ignoring second request.\n");
6048                 ret = -EIO;
6049                 goto done;
6050         }
6051
6052         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6053                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6054                 goto done;
6055         }
6056
6057         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6058                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
6059                 goto done;
6060         }
6061
6062         if (iwl4965_is_rfkill(priv)) {
6063                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6064                 goto done;
6065         }
6066
6067         if (!test_bit(STATUS_READY, &priv->status)) {
6068                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
6069                 goto done;
6070         }
6071
6072         if (!priv->scan_bands) {
6073                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6074                 goto done;
6075         }
6076
6077         if (!priv->scan) {
6078                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6079                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6080                 if (!priv->scan) {
6081                         ret = -ENOMEM;
6082                         goto done;
6083                 }
6084         }
6085         scan = priv->scan;
6086         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6087
6088         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6089         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6090
6091         if (iwl4965_is_associated(priv)) {
6092                 u16 interval = 0;
6093                 u32 extra;
6094                 u32 suspend_time = 100;
6095                 u32 scan_suspend_time = 100;
6096                 unsigned long flags;
6097
6098                 IWL_DEBUG_INFO("Scanning while associated...\n");
6099
6100                 spin_lock_irqsave(&priv->lock, flags);
6101                 interval = priv->beacon_int;
6102                 spin_unlock_irqrestore(&priv->lock, flags);
6103
6104                 scan->suspend_time = 0;
6105                 scan->max_out_time = cpu_to_le32(200 * 1024);
6106                 if (!interval)
6107                         interval = suspend_time;
6108
6109                 extra = (suspend_time / interval) << 22;
6110                 scan_suspend_time = (extra |
6111                     ((suspend_time % interval) * 1024));
6112                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6113                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6114                                scan_suspend_time, interval);
6115         }
6116
6117         /* We should add the ability for user to lock to PASSIVE ONLY */
6118         if (priv->one_direct_scan) {
6119                 IWL_DEBUG_SCAN
6120                     ("Kicking off one direct scan for '%s'\n",
6121                      iwl4965_escape_essid(priv->direct_ssid,
6122                                       priv->direct_ssid_len));
6123                 scan->direct_scan[0].id = WLAN_EID_SSID;
6124                 scan->direct_scan[0].len = priv->direct_ssid_len;
6125                 memcpy(scan->direct_scan[0].ssid,
6126                        priv->direct_ssid, priv->direct_ssid_len);
6127                 direct_mask = 1;
6128         } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6129                 scan->direct_scan[0].id = WLAN_EID_SSID;
6130                 scan->direct_scan[0].len = priv->essid_len;
6131                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6132                 direct_mask = 1;
6133         } else {
6134                 direct_mask = 0;
6135         }
6136
6137         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6138         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6139         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6140
6141
6142         switch (priv->scan_bands) {
6143         case 2:
6144                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6145                 scan->tx_cmd.rate_n_flags =
6146                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6147                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6148
6149                 scan->good_CRC_th = 0;
6150                 band = IEEE80211_BAND_2GHZ;
6151                 break;
6152
6153         case 1:
6154                 scan->tx_cmd.rate_n_flags =
6155                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6156                                 RATE_MCS_ANT_B_MSK);
6157                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6158                 band = IEEE80211_BAND_5GHZ;
6159                 break;
6160
6161         default:
6162                 IWL_WARNING("Invalid scan band count\n");
6163                 goto done;
6164         }
6165
6166         /* We don't build a direct scan probe request; the uCode will do
6167          * that based on the direct_mask added to each channel entry */
6168         cmd_len = iwl4965_fill_probe_req(priv, band,
6169                                         (struct ieee80211_mgmt *)scan->data,
6170                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6171
6172         scan->tx_cmd.len = cpu_to_le16(cmd_len);
6173         /* select Rx chains */
6174
6175         /* Force use of chains B and C (0x6) for scan Rx.
6176          * Avoid A (0x1) because of its off-channel reception on A-band.
6177          * MIMO is not used here, but value is required to make uCode happy. */
6178         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6179                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6180                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6181                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6182
6183         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6184                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6185
6186         if (direct_mask) {
6187                 IWL_DEBUG_SCAN
6188                     ("Initiating direct scan for %s.\n",
6189                      iwl4965_escape_essid(priv->essid, priv->essid_len));
6190                 scan->channel_count =
6191                         iwl4965_get_channels_for_scan(
6192                                 priv, band, 1, /* active */
6193                                 direct_mask,
6194                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6195         } else {
6196                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6197                 scan->channel_count =
6198                         iwl4965_get_channels_for_scan(
6199                                 priv, band, 0, /* passive */
6200                                 direct_mask,
6201                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6202         }
6203
6204         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6205             scan->channel_count * sizeof(struct iwl4965_scan_channel);
6206         cmd.data = scan;
6207         scan->len = cpu_to_le16(cmd.len);
6208
6209         set_bit(STATUS_SCAN_HW, &priv->status);
6210         ret = iwl_send_cmd_sync(priv, &cmd);
6211         if (ret)
6212                 goto done;
6213
6214         queue_delayed_work(priv->workqueue, &priv->scan_check,
6215                            IWL_SCAN_CHECK_WATCHDOG);
6216
6217         mutex_unlock(&priv->mutex);
6218         return;
6219
6220  done:
6221         /* inform mac80211 scan aborted */
6222         queue_work(priv->workqueue, &priv->scan_completed);
6223         mutex_unlock(&priv->mutex);
6224 }
6225
6226 static void iwl4965_bg_up(struct work_struct *data)
6227 {
6228         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6229
6230         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6231                 return;
6232
6233         mutex_lock(&priv->mutex);
6234         __iwl4965_up(priv);
6235         mutex_unlock(&priv->mutex);
6236 }
6237
6238 static void iwl4965_bg_restart(struct work_struct *data)
6239 {
6240         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6241
6242         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6243                 return;
6244
6245         iwl4965_down(priv);
6246         queue_work(priv->workqueue, &priv->up);
6247 }
6248
6249 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6250 {
6251         struct iwl_priv *priv =
6252             container_of(data, struct iwl_priv, rx_replenish);
6253
6254         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6255                 return;
6256
6257         mutex_lock(&priv->mutex);
6258         iwl4965_rx_replenish(priv);
6259         mutex_unlock(&priv->mutex);
6260 }
6261
6262 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6263
6264 static void iwl4965_bg_post_associate(struct work_struct *data)
6265 {
6266         struct iwl_priv *priv = container_of(data, struct iwl_priv,
6267                                              post_associate.work);
6268         struct ieee80211_conf *conf = NULL;
6269         int ret = 0;
6270         DECLARE_MAC_BUF(mac);
6271
6272         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6273                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6274                 return;
6275         }
6276
6277         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6278                         priv->assoc_id,
6279                         print_mac(mac, priv->active_rxon.bssid_addr));
6280
6281
6282         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6283                 return;
6284
6285         mutex_lock(&priv->mutex);
6286
6287         if (!priv->vif || !priv->is_open) {
6288                 mutex_unlock(&priv->mutex);
6289                 return;
6290         }
6291         iwl4965_scan_cancel_timeout(priv, 200);
6292
6293         conf = ieee80211_get_hw_conf(priv->hw);
6294
6295         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6296         iwl4965_commit_rxon(priv);
6297
6298         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6299         iwl4965_setup_rxon_timing(priv);
6300         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6301                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6302         if (ret)
6303                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6304                             "Attempting to continue.\n");
6305
6306         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6307
6308 #ifdef CONFIG_IWL4965_HT
6309         if (priv->current_ht_config.is_ht)
6310                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6311 #endif /* CONFIG_IWL4965_HT*/
6312         iwl4965_set_rxon_chain(priv);
6313         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6314
6315         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6316                         priv->assoc_id, priv->beacon_int);
6317
6318         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6319                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6320         else
6321                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6322
6323         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6324                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6325                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6326                 else
6327                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6328
6329                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6330                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6331
6332         }
6333
6334         iwl4965_commit_rxon(priv);
6335
6336         switch (priv->iw_mode) {
6337         case IEEE80211_IF_TYPE_STA:
6338                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6339                 break;
6340
6341         case IEEE80211_IF_TYPE_IBSS:
6342
6343                 /* clear out the station table */
6344                 iwlcore_clear_stations_table(priv);
6345
6346                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6347                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6348                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6349                 iwl4965_send_beacon_cmd(priv);
6350
6351                 break;
6352
6353         default:
6354                 IWL_ERROR("%s Should not be called in %d mode\n",
6355                                 __FUNCTION__, priv->iw_mode);
6356                 break;
6357         }
6358
6359         iwl4965_sequence_reset(priv);
6360
6361 #ifdef CONFIG_IWL4965_SENSITIVITY
6362         /* Enable Rx differential gain and sensitivity calibrations */
6363         iwl4965_chain_noise_reset(priv);
6364         priv->start_calib = 1;
6365 #endif /* CONFIG_IWL4965_SENSITIVITY */
6366
6367         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6368                 priv->assoc_station_added = 1;
6369
6370         iwl4965_activate_qos(priv, 0);
6371
6372         /* we have just associated, don't start scan too early */
6373         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6374         mutex_unlock(&priv->mutex);
6375 }
6376
6377 static void iwl4965_bg_abort_scan(struct work_struct *work)
6378 {
6379         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6380
6381         if (!iwl4965_is_ready(priv))
6382                 return;
6383
6384         mutex_lock(&priv->mutex);
6385
6386         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6387         iwl4965_send_scan_abort(priv);
6388
6389         mutex_unlock(&priv->mutex);
6390 }
6391
6392 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6393
6394 static void iwl4965_bg_scan_completed(struct work_struct *work)
6395 {
6396         struct iwl_priv *priv =
6397             container_of(work, struct iwl_priv, scan_completed);
6398
6399         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6400
6401         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6402                 return;
6403
6404         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6405                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6406
6407         ieee80211_scan_completed(priv->hw);
6408
6409         /* Since setting the TXPOWER may have been deferred while
6410          * performing the scan, fire one off */
6411         mutex_lock(&priv->mutex);
6412         iwl4965_hw_reg_send_txpower(priv);
6413         mutex_unlock(&priv->mutex);
6414 }
6415
6416 /*****************************************************************************
6417  *
6418  * mac80211 entry point functions
6419  *
6420  *****************************************************************************/
6421
6422 #define UCODE_READY_TIMEOUT     (2 * HZ)
6423
6424 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6425 {
6426         struct iwl_priv *priv = hw->priv;
6427         int ret;
6428
6429         IWL_DEBUG_MAC80211("enter\n");
6430
6431         if (pci_enable_device(priv->pci_dev)) {
6432                 IWL_ERROR("Fail to pci_enable_device\n");
6433                 return -ENODEV;
6434         }
6435         pci_restore_state(priv->pci_dev);
6436         pci_enable_msi(priv->pci_dev);
6437
6438         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6439                           DRV_NAME, priv);
6440         if (ret) {
6441                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6442                 goto out_disable_msi;
6443         }
6444
6445         /* we should be verifying the device is ready to be opened */
6446         mutex_lock(&priv->mutex);
6447
6448         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6449         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6450          * ucode filename and max sizes are card-specific. */
6451
6452         if (!priv->ucode_code.len) {
6453                 ret = iwl4965_read_ucode(priv);
6454                 if (ret) {
6455                         IWL_ERROR("Could not read microcode: %d\n", ret);
6456                         mutex_unlock(&priv->mutex);
6457                         goto out_release_irq;
6458                 }
6459         }
6460
6461         ret = __iwl4965_up(priv);
6462
6463         mutex_unlock(&priv->mutex);
6464
6465         if (ret)
6466                 goto out_release_irq;
6467
6468         IWL_DEBUG_INFO("Start UP work done.\n");
6469
6470         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6471                 return 0;
6472
6473         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6474          * mac80211 will not be run successfully. */
6475         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6476                         test_bit(STATUS_READY, &priv->status),
6477                         UCODE_READY_TIMEOUT);
6478         if (!ret) {
6479                 if (!test_bit(STATUS_READY, &priv->status)) {
6480                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6481                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6482                         ret = -ETIMEDOUT;
6483                         goto out_release_irq;
6484                 }
6485         }
6486
6487         priv->is_open = 1;
6488         IWL_DEBUG_MAC80211("leave\n");
6489         return 0;
6490
6491 out_release_irq:
6492         free_irq(priv->pci_dev->irq, priv);
6493 out_disable_msi:
6494         pci_disable_msi(priv->pci_dev);
6495         pci_disable_device(priv->pci_dev);
6496         priv->is_open = 0;
6497         IWL_DEBUG_MAC80211("leave - failed\n");
6498         return ret;
6499 }
6500
6501 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6502 {
6503         struct iwl_priv *priv = hw->priv;
6504
6505         IWL_DEBUG_MAC80211("enter\n");
6506
6507         if (!priv->is_open) {
6508                 IWL_DEBUG_MAC80211("leave - skip\n");
6509                 return;
6510         }
6511
6512         priv->is_open = 0;
6513
6514         if (iwl4965_is_ready_rf(priv)) {
6515                 /* stop mac, cancel any scan request and clear
6516                  * RXON_FILTER_ASSOC_MSK BIT
6517                  */
6518                 mutex_lock(&priv->mutex);
6519                 iwl4965_scan_cancel_timeout(priv, 100);
6520                 cancel_delayed_work(&priv->post_associate);
6521                 mutex_unlock(&priv->mutex);
6522         }
6523
6524         iwl4965_down(priv);
6525
6526         flush_workqueue(priv->workqueue);
6527         free_irq(priv->pci_dev->irq, priv);
6528         pci_disable_msi(priv->pci_dev);
6529         pci_save_state(priv->pci_dev);
6530         pci_disable_device(priv->pci_dev);
6531
6532         IWL_DEBUG_MAC80211("leave\n");
6533 }
6534
6535 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6536                       struct ieee80211_tx_control *ctl)
6537 {
6538         struct iwl_priv *priv = hw->priv;
6539
6540         IWL_DEBUG_MAC80211("enter\n");
6541
6542         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6543                 IWL_DEBUG_MAC80211("leave - monitor\n");
6544                 return -1;
6545         }
6546
6547         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6548                      ctl->tx_rate->bitrate);
6549
6550         if (iwl4965_tx_skb(priv, skb, ctl))
6551                 dev_kfree_skb_any(skb);
6552
6553         IWL_DEBUG_MAC80211("leave\n");
6554         return 0;
6555 }
6556
6557 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6558                                  struct ieee80211_if_init_conf *conf)
6559 {
6560         struct iwl_priv *priv = hw->priv;
6561         unsigned long flags;
6562         DECLARE_MAC_BUF(mac);
6563
6564         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6565
6566         if (priv->vif) {
6567                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6568                 return -EOPNOTSUPP;
6569         }
6570
6571         spin_lock_irqsave(&priv->lock, flags);
6572         priv->vif = conf->vif;
6573
6574         spin_unlock_irqrestore(&priv->lock, flags);
6575
6576         mutex_lock(&priv->mutex);
6577
6578         if (conf->mac_addr) {
6579                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6580                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6581         }
6582
6583         if (iwl4965_is_ready(priv))
6584                 iwl4965_set_mode(priv, conf->type);
6585
6586         mutex_unlock(&priv->mutex);
6587
6588         IWL_DEBUG_MAC80211("leave\n");
6589         return 0;
6590 }
6591
6592 /**
6593  * iwl4965_mac_config - mac80211 config callback
6594  *
6595  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6596  * be set inappropriately and the driver currently sets the hardware up to
6597  * use it whenever needed.
6598  */
6599 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6600 {
6601         struct iwl_priv *priv = hw->priv;
6602         const struct iwl_channel_info *ch_info;
6603         unsigned long flags;
6604         int ret = 0;
6605
6606         mutex_lock(&priv->mutex);
6607         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6608
6609         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6610
6611         if (!iwl4965_is_ready(priv)) {
6612                 IWL_DEBUG_MAC80211("leave - not ready\n");
6613                 ret = -EIO;
6614                 goto out;
6615         }
6616
6617         if (unlikely(!iwl4965_mod_params.disable_hw_scan &&
6618                      test_bit(STATUS_SCANNING, &priv->status))) {
6619                 IWL_DEBUG_MAC80211("leave - scanning\n");
6620                 set_bit(STATUS_CONF_PENDING, &priv->status);
6621                 mutex_unlock(&priv->mutex);
6622                 return 0;
6623         }
6624
6625         spin_lock_irqsave(&priv->lock, flags);
6626
6627         ch_info = iwl_get_channel_info(priv, conf->channel->band,
6628                         ieee80211_frequency_to_channel(conf->channel->center_freq));
6629         if (!is_channel_valid(ch_info)) {
6630                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6631                 spin_unlock_irqrestore(&priv->lock, flags);
6632                 ret = -EINVAL;
6633                 goto out;
6634         }
6635
6636 #ifdef CONFIG_IWL4965_HT
6637         /* if we are switching from ht to 2.4 clear flags
6638          * from any ht related info since 2.4 does not
6639          * support ht */
6640         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6641 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6642             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6643 #endif
6644         )
6645                 priv->staging_rxon.flags = 0;
6646 #endif /* CONFIG_IWL4965_HT */
6647
6648         iwlcore_set_rxon_channel(priv, conf->channel->band,
6649                 ieee80211_frequency_to_channel(conf->channel->center_freq));
6650
6651         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6652
6653         /* The list of supported rates and rate mask can be different
6654          * for each band; since the band may have changed, reset
6655          * the rate mask to what mac80211 lists */
6656         iwl4965_set_rate(priv);
6657
6658         spin_unlock_irqrestore(&priv->lock, flags);
6659
6660 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6661         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6662                 iwl4965_hw_channel_switch(priv, conf->channel);
6663                 goto out;
6664         }
6665 #endif
6666
6667         iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
6668
6669         if (!conf->radio_enabled) {
6670                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6671                 goto out;
6672         }
6673
6674         if (iwl4965_is_rfkill(priv)) {
6675                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6676                 ret = -EIO;
6677                 goto out;
6678         }
6679
6680         iwl4965_set_rate(priv);
6681
6682         if (memcmp(&priv->active_rxon,
6683                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6684                 iwl4965_commit_rxon(priv);
6685         else
6686                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6687
6688         IWL_DEBUG_MAC80211("leave\n");
6689
6690 out:
6691         clear_bit(STATUS_CONF_PENDING, &priv->status);
6692         mutex_unlock(&priv->mutex);
6693         return ret;
6694 }
6695
6696 static void iwl4965_config_ap(struct iwl_priv *priv)
6697 {
6698         int ret = 0;
6699
6700         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6701                 return;
6702
6703         /* The following should be done only at AP bring up */
6704         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6705
6706                 /* RXON - unassoc (to set timing command) */
6707                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6708                 iwl4965_commit_rxon(priv);
6709
6710                 /* RXON Timing */
6711                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6712                 iwl4965_setup_rxon_timing(priv);
6713                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6714                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6715                 if (ret)
6716                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6717                                         "Attempting to continue.\n");
6718
6719                 iwl4965_set_rxon_chain(priv);
6720
6721                 /* FIXME: what should be the assoc_id for AP? */
6722                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6723                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6724                         priv->staging_rxon.flags |=
6725                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6726                 else
6727                         priv->staging_rxon.flags &=
6728                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6729
6730                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6731                         if (priv->assoc_capability &
6732                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6733                                 priv->staging_rxon.flags |=
6734                                         RXON_FLG_SHORT_SLOT_MSK;
6735                         else
6736                                 priv->staging_rxon.flags &=
6737                                         ~RXON_FLG_SHORT_SLOT_MSK;
6738
6739                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6740                                 priv->staging_rxon.flags &=
6741                                         ~RXON_FLG_SHORT_SLOT_MSK;
6742                 }
6743                 /* restore RXON assoc */
6744                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6745                 iwl4965_commit_rxon(priv);
6746                 iwl4965_activate_qos(priv, 1);
6747                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6748         }
6749         iwl4965_send_beacon_cmd(priv);
6750
6751         /* FIXME - we need to add code here to detect a totally new
6752          * configuration, reset the AP, unassoc, rxon timing, assoc,
6753          * clear sta table, add BCAST sta... */
6754 }
6755
6756 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6757                                         struct ieee80211_vif *vif,
6758                                     struct ieee80211_if_conf *conf)
6759 {
6760         struct iwl_priv *priv = hw->priv;
6761         DECLARE_MAC_BUF(mac);
6762         unsigned long flags;
6763         int rc;
6764
6765         if (conf == NULL)
6766                 return -EIO;
6767
6768         if (priv->vif != vif) {
6769                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6770                 mutex_unlock(&priv->mutex);
6771                 return 0;
6772         }
6773
6774         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6775             (!conf->beacon || !conf->ssid_len)) {
6776                 IWL_DEBUG_MAC80211
6777                     ("Leaving in AP mode because HostAPD is not ready.\n");
6778                 return 0;
6779         }
6780
6781         if (!iwl4965_is_alive(priv))
6782                 return -EAGAIN;
6783
6784         mutex_lock(&priv->mutex);
6785
6786         if (conf->bssid)
6787                 IWL_DEBUG_MAC80211("bssid: %s\n",
6788                                    print_mac(mac, conf->bssid));
6789
6790 /*
6791  * very dubious code was here; the probe filtering flag is never set:
6792  *
6793         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6794             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6795  */
6796
6797         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6798                 if (!conf->bssid) {
6799                         conf->bssid = priv->mac_addr;
6800                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6801                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6802                                            print_mac(mac, conf->bssid));
6803                 }
6804                 if (priv->ibss_beacon)
6805                         dev_kfree_skb(priv->ibss_beacon);
6806
6807                 priv->ibss_beacon = conf->beacon;
6808         }
6809
6810         if (iwl4965_is_rfkill(priv))
6811                 goto done;
6812
6813         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6814             !is_multicast_ether_addr(conf->bssid)) {
6815                 /* If there is currently a HW scan going on in the background
6816                  * then we need to cancel it else the RXON below will fail. */
6817                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6818                         IWL_WARNING("Aborted scan still in progress "
6819                                     "after 100ms\n");
6820                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6821                         mutex_unlock(&priv->mutex);
6822                         return -EAGAIN;
6823                 }
6824                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6825
6826                 /* TODO: Audit driver for usage of these members and see
6827                  * if mac80211 deprecates them (priv->bssid looks like it
6828                  * shouldn't be there, but I haven't scanned the IBSS code
6829                  * to verify) - jpk */
6830                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6831
6832                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6833                         iwl4965_config_ap(priv);
6834                 else {
6835                         rc = iwl4965_commit_rxon(priv);
6836                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6837                                 iwl4965_rxon_add_station(
6838                                         priv, priv->active_rxon.bssid_addr, 1);
6839                 }
6840
6841         } else {
6842                 iwl4965_scan_cancel_timeout(priv, 100);
6843                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6844                 iwl4965_commit_rxon(priv);
6845         }
6846
6847  done:
6848         spin_lock_irqsave(&priv->lock, flags);
6849         if (!conf->ssid_len)
6850                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6851         else
6852                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6853
6854         priv->essid_len = conf->ssid_len;
6855         spin_unlock_irqrestore(&priv->lock, flags);
6856
6857         IWL_DEBUG_MAC80211("leave\n");
6858         mutex_unlock(&priv->mutex);
6859
6860         return 0;
6861 }
6862
6863 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6864                                  unsigned int changed_flags,
6865                                  unsigned int *total_flags,
6866                                  int mc_count, struct dev_addr_list *mc_list)
6867 {
6868         /*
6869          * XXX: dummy
6870          * see also iwl4965_connection_init_rx_config
6871          */
6872         *total_flags = 0;
6873 }
6874
6875 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6876                                      struct ieee80211_if_init_conf *conf)
6877 {
6878         struct iwl_priv *priv = hw->priv;
6879
6880         IWL_DEBUG_MAC80211("enter\n");
6881
6882         mutex_lock(&priv->mutex);
6883
6884         if (iwl4965_is_ready_rf(priv)) {
6885                 iwl4965_scan_cancel_timeout(priv, 100);
6886                 cancel_delayed_work(&priv->post_associate);
6887                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6888                 iwl4965_commit_rxon(priv);
6889         }
6890         if (priv->vif == conf->vif) {
6891                 priv->vif = NULL;
6892                 memset(priv->bssid, 0, ETH_ALEN);
6893                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6894                 priv->essid_len = 0;
6895         }
6896         mutex_unlock(&priv->mutex);
6897
6898         IWL_DEBUG_MAC80211("leave\n");
6899
6900 }
6901
6902 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6903                                      struct ieee80211_vif *vif,
6904                                      struct ieee80211_bss_conf *bss_conf,
6905                                      u32 changes)
6906 {
6907         struct iwl_priv *priv = hw->priv;
6908
6909         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6910                 if (bss_conf->use_short_preamble)
6911                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6912                 else
6913                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6914         }
6915
6916         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6917                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6918                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6919                 else
6920                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6921         }
6922
6923         if (changes & BSS_CHANGED_ASSOC) {
6924                 /*
6925                  * TODO:
6926                  * do stuff instead of sniffing assoc resp
6927                  */
6928         }
6929
6930         if (iwl4965_is_associated(priv))
6931                 iwl4965_send_rxon_assoc(priv);
6932 }
6933
6934 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6935 {
6936         int rc = 0;
6937         unsigned long flags;
6938         struct iwl_priv *priv = hw->priv;
6939
6940         IWL_DEBUG_MAC80211("enter\n");
6941
6942         mutex_lock(&priv->mutex);
6943         spin_lock_irqsave(&priv->lock, flags);
6944
6945         if (!iwl4965_is_ready_rf(priv)) {
6946                 rc = -EIO;
6947                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6948                 goto out_unlock;
6949         }
6950
6951         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
6952                 rc = -EIO;
6953                 IWL_ERROR("ERROR: APs don't scan\n");
6954                 goto out_unlock;
6955         }
6956
6957         /* we don't schedule scan within next_scan_jiffies period */
6958         if (priv->next_scan_jiffies &&
6959                         time_after(priv->next_scan_jiffies, jiffies)) {
6960                 rc = -EAGAIN;
6961                 goto out_unlock;
6962         }
6963         /* if we just finished scan ask for delay */
6964         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6965                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
6966                 rc = -EAGAIN;
6967                 goto out_unlock;
6968         }
6969         if (len) {
6970                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6971                                iwl4965_escape_essid(ssid, len), (int)len);
6972
6973                 priv->one_direct_scan = 1;
6974                 priv->direct_ssid_len = (u8)
6975                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6976                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6977         } else
6978                 priv->one_direct_scan = 0;
6979
6980         rc = iwl4965_scan_initiate(priv);
6981
6982         IWL_DEBUG_MAC80211("leave\n");
6983
6984 out_unlock:
6985         spin_unlock_irqrestore(&priv->lock, flags);
6986         mutex_unlock(&priv->mutex);
6987
6988         return rc;
6989 }
6990
6991 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
6992                         struct ieee80211_key_conf *keyconf, const u8 *addr,
6993                         u32 iv32, u16 *phase1key)
6994 {
6995         struct iwl_priv *priv = hw->priv;
6996         u8 sta_id = IWL_INVALID_STATION;
6997         unsigned long flags;
6998         __le16 key_flags = 0;
6999         int i;
7000         DECLARE_MAC_BUF(mac);
7001
7002         IWL_DEBUG_MAC80211("enter\n");
7003
7004         sta_id = iwl4965_hw_find_station(priv, addr);
7005         if (sta_id == IWL_INVALID_STATION) {
7006                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7007                                    print_mac(mac, addr));
7008                 return;
7009         }
7010
7011         iwl4965_scan_cancel_timeout(priv, 100);
7012
7013         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
7014         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
7015         key_flags &= ~STA_KEY_FLG_INVALID;
7016
7017         if (sta_id == priv->hw_setting.bcast_sta_id)
7018                 key_flags |= STA_KEY_MULTICAST_MSK;
7019
7020         spin_lock_irqsave(&priv->sta_lock, flags);
7021
7022         priv->stations[sta_id].sta.key.key_offset =
7023                                         (sta_id % STA_KEY_MAX_NUM);/* FIXME */
7024         priv->stations[sta_id].sta.key.key_flags = key_flags;
7025         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
7026
7027         for (i = 0; i < 5; i++)
7028                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
7029                         cpu_to_le16(phase1key[i]);
7030
7031         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
7032         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
7033
7034         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
7035
7036         spin_unlock_irqrestore(&priv->sta_lock, flags);
7037
7038         IWL_DEBUG_MAC80211("leave\n");
7039 }
7040
7041 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7042                            const u8 *local_addr, const u8 *addr,
7043                            struct ieee80211_key_conf *key)
7044 {
7045         struct iwl_priv *priv = hw->priv;
7046         DECLARE_MAC_BUF(mac);
7047         int ret = 0;
7048         u8 sta_id = IWL_INVALID_STATION;
7049         u8 static_key;
7050
7051         IWL_DEBUG_MAC80211("enter\n");
7052
7053         if (!iwl4965_mod_params.hw_crypto) {
7054                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7055                 return -EOPNOTSUPP;
7056         }
7057
7058         if (is_zero_ether_addr(addr))
7059                 /* only support pairwise keys */
7060                 return -EOPNOTSUPP;
7061
7062         /* FIXME: need to differenciate between static and dynamic key
7063          * in the level of mac80211 */
7064         static_key = !iwl4965_is_associated(priv);
7065
7066         if (!static_key) {
7067                 sta_id = iwl4965_hw_find_station(priv, addr);
7068                 if (sta_id == IWL_INVALID_STATION) {
7069                         IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7070                                            print_mac(mac, addr));
7071                         return -EINVAL;
7072                 }
7073         }
7074
7075         iwl4965_scan_cancel_timeout(priv, 100);
7076
7077         switch (cmd) {
7078         case SET_KEY:
7079                 if (static_key)
7080                         ret = iwl4965_set_static_key(priv, key);
7081                 else
7082                         ret = iwl4965_set_dynamic_key(priv, key, sta_id);
7083
7084                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
7085                 break;
7086         case DISABLE_KEY:
7087                 if (static_key)
7088                         ret = iwl4965_remove_static_key(priv);
7089                 else
7090                         ret = iwl4965_clear_sta_key_info(priv, sta_id);
7091
7092                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7093                 break;
7094         default:
7095                 ret = -EINVAL;
7096         }
7097
7098         IWL_DEBUG_MAC80211("leave\n");
7099
7100         return ret;
7101 }
7102
7103 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7104                            const struct ieee80211_tx_queue_params *params)
7105 {
7106         struct iwl_priv *priv = hw->priv;
7107         unsigned long flags;
7108         int q;
7109
7110         IWL_DEBUG_MAC80211("enter\n");
7111
7112         if (!iwl4965_is_ready_rf(priv)) {
7113                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7114                 return -EIO;
7115         }
7116
7117         if (queue >= AC_NUM) {
7118                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7119                 return 0;
7120         }
7121
7122         if (!priv->qos_data.qos_enable) {
7123                 priv->qos_data.qos_active = 0;
7124                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7125                 return 0;
7126         }
7127         q = AC_NUM - 1 - queue;
7128
7129         spin_lock_irqsave(&priv->lock, flags);
7130
7131         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7132         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7133         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7134         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7135                         cpu_to_le16((params->txop * 32));
7136
7137         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7138         priv->qos_data.qos_active = 1;
7139
7140         spin_unlock_irqrestore(&priv->lock, flags);
7141
7142         mutex_lock(&priv->mutex);
7143         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7144                 iwl4965_activate_qos(priv, 1);
7145         else if (priv->assoc_id && iwl4965_is_associated(priv))
7146                 iwl4965_activate_qos(priv, 0);
7147
7148         mutex_unlock(&priv->mutex);
7149
7150         IWL_DEBUG_MAC80211("leave\n");
7151         return 0;
7152 }
7153
7154 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7155                                 struct ieee80211_tx_queue_stats *stats)
7156 {
7157         struct iwl_priv *priv = hw->priv;
7158         int i, avail;
7159         struct iwl4965_tx_queue *txq;
7160         struct iwl4965_queue *q;
7161         unsigned long flags;
7162
7163         IWL_DEBUG_MAC80211("enter\n");
7164
7165         if (!iwl4965_is_ready_rf(priv)) {
7166                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7167                 return -EIO;
7168         }
7169
7170         spin_lock_irqsave(&priv->lock, flags);
7171
7172         for (i = 0; i < AC_NUM; i++) {
7173                 txq = &priv->txq[i];
7174                 q = &txq->q;
7175                 avail = iwl4965_queue_space(q);
7176
7177                 stats->data[i].len = q->n_window - avail;
7178                 stats->data[i].limit = q->n_window - q->high_mark;
7179                 stats->data[i].count = q->n_window;
7180
7181         }
7182         spin_unlock_irqrestore(&priv->lock, flags);
7183
7184         IWL_DEBUG_MAC80211("leave\n");
7185
7186         return 0;
7187 }
7188
7189 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7190                              struct ieee80211_low_level_stats *stats)
7191 {
7192         IWL_DEBUG_MAC80211("enter\n");
7193         IWL_DEBUG_MAC80211("leave\n");
7194
7195         return 0;
7196 }
7197
7198 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7199 {
7200         IWL_DEBUG_MAC80211("enter\n");
7201         IWL_DEBUG_MAC80211("leave\n");
7202
7203         return 0;
7204 }
7205
7206 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7207 {
7208         struct iwl_priv *priv = hw->priv;
7209         unsigned long flags;
7210
7211         mutex_lock(&priv->mutex);
7212         IWL_DEBUG_MAC80211("enter\n");
7213
7214         priv->lq_mngr.lq_ready = 0;
7215 #ifdef CONFIG_IWL4965_HT
7216         spin_lock_irqsave(&priv->lock, flags);
7217         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7218         spin_unlock_irqrestore(&priv->lock, flags);
7219 #endif /* CONFIG_IWL4965_HT */
7220
7221         iwlcore_reset_qos(priv);
7222
7223         cancel_delayed_work(&priv->post_associate);
7224
7225         spin_lock_irqsave(&priv->lock, flags);
7226         priv->assoc_id = 0;
7227         priv->assoc_capability = 0;
7228         priv->call_post_assoc_from_beacon = 0;
7229         priv->assoc_station_added = 0;
7230
7231         /* new association get rid of ibss beacon skb */
7232         if (priv->ibss_beacon)
7233                 dev_kfree_skb(priv->ibss_beacon);
7234
7235         priv->ibss_beacon = NULL;
7236
7237         priv->beacon_int = priv->hw->conf.beacon_int;
7238         priv->timestamp1 = 0;
7239         priv->timestamp0 = 0;
7240         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7241                 priv->beacon_int = 0;
7242
7243         spin_unlock_irqrestore(&priv->lock, flags);
7244
7245         if (!iwl4965_is_ready_rf(priv)) {
7246                 IWL_DEBUG_MAC80211("leave - not ready\n");
7247                 mutex_unlock(&priv->mutex);
7248                 return;
7249         }
7250
7251         /* we are restarting association process
7252          * clear RXON_FILTER_ASSOC_MSK bit
7253          */
7254         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7255                 iwl4965_scan_cancel_timeout(priv, 100);
7256                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7257                 iwl4965_commit_rxon(priv);
7258         }
7259
7260         /* Per mac80211.h: This is only used in IBSS mode... */
7261         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7262
7263                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7264                 mutex_unlock(&priv->mutex);
7265                 return;
7266         }
7267
7268         priv->only_active_channel = 0;
7269
7270         iwl4965_set_rate(priv);
7271
7272         mutex_unlock(&priv->mutex);
7273
7274         IWL_DEBUG_MAC80211("leave\n");
7275 }
7276
7277 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7278                                  struct ieee80211_tx_control *control)
7279 {
7280         struct iwl_priv *priv = hw->priv;
7281         unsigned long flags;
7282
7283         mutex_lock(&priv->mutex);
7284         IWL_DEBUG_MAC80211("enter\n");
7285
7286         if (!iwl4965_is_ready_rf(priv)) {
7287                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7288                 mutex_unlock(&priv->mutex);
7289                 return -EIO;
7290         }
7291
7292         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7293                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7294                 mutex_unlock(&priv->mutex);
7295                 return -EIO;
7296         }
7297
7298         spin_lock_irqsave(&priv->lock, flags);
7299
7300         if (priv->ibss_beacon)
7301                 dev_kfree_skb(priv->ibss_beacon);
7302
7303         priv->ibss_beacon = skb;
7304
7305         priv->assoc_id = 0;
7306
7307         IWL_DEBUG_MAC80211("leave\n");
7308         spin_unlock_irqrestore(&priv->lock, flags);
7309
7310         iwlcore_reset_qos(priv);
7311
7312         queue_work(priv->workqueue, &priv->post_associate.work);
7313
7314         mutex_unlock(&priv->mutex);
7315
7316         return 0;
7317 }
7318
7319 #ifdef CONFIG_IWL4965_HT
7320
7321 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7322                                  struct iwl_priv *priv)
7323 {
7324         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7325         struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7326         struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7327
7328         IWL_DEBUG_MAC80211("enter: \n");
7329
7330         if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7331                 iwl_conf->is_ht = 0;
7332                 return;
7333         }
7334
7335         iwl_conf->is_ht = 1;
7336         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7337
7338         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7339                 iwl_conf->sgf |= 0x1;
7340         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7341                 iwl_conf->sgf |= 0x2;
7342
7343         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7344         iwl_conf->max_amsdu_size =
7345                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7346
7347         iwl_conf->supported_chan_width =
7348                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7349         iwl_conf->extension_chan_offset =
7350                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7351         /* If no above or below channel supplied disable FAT channel */
7352         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7353             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7354                 iwl_conf->supported_chan_width = 0;
7355
7356         iwl_conf->tx_mimo_ps_mode =
7357                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7358         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7359
7360         iwl_conf->control_channel = ht_bss_conf->primary_channel;
7361         iwl_conf->tx_chan_width =
7362                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7363         iwl_conf->ht_protection =
7364                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7365         iwl_conf->non_GF_STA_present =
7366                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7367
7368         IWL_DEBUG_MAC80211("control channel %d\n",
7369                 iwl_conf->control_channel);
7370         IWL_DEBUG_MAC80211("leave\n");
7371 }
7372
7373 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7374                                struct ieee80211_conf *conf)
7375 {
7376         struct iwl_priv *priv = hw->priv;
7377
7378         IWL_DEBUG_MAC80211("enter: \n");
7379
7380         iwl4965_ht_info_fill(conf, priv);
7381         iwl4965_set_rxon_chain(priv);
7382
7383         if (priv && priv->assoc_id &&
7384             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
7385                 unsigned long flags;
7386
7387                 spin_lock_irqsave(&priv->lock, flags);
7388                 if (priv->beacon_int)
7389                         queue_work(priv->workqueue, &priv->post_associate.work);
7390                 else
7391                         priv->call_post_assoc_from_beacon = 1;
7392                 spin_unlock_irqrestore(&priv->lock, flags);
7393         }
7394
7395         IWL_DEBUG_MAC80211("leave:\n");
7396         return 0;
7397 }
7398
7399 #endif /*CONFIG_IWL4965_HT*/
7400
7401 /*****************************************************************************
7402  *
7403  * sysfs attributes
7404  *
7405  *****************************************************************************/
7406
7407 #ifdef CONFIG_IWLWIFI_DEBUG
7408
7409 /*
7410  * The following adds a new attribute to the sysfs representation
7411  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7412  * used for controlling the debug level.
7413  *
7414  * See the level definitions in iwl for details.
7415  */
7416
7417 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7418 {
7419         return sprintf(buf, "0x%08X\n", iwl_debug_level);
7420 }
7421 static ssize_t store_debug_level(struct device_driver *d,
7422                                  const char *buf, size_t count)
7423 {
7424         char *p = (char *)buf;
7425         u32 val;
7426
7427         val = simple_strtoul(p, &p, 0);
7428         if (p == buf)
7429                 printk(KERN_INFO DRV_NAME
7430                        ": %s is not in hex or decimal form.\n", buf);
7431         else
7432                 iwl_debug_level = val;
7433
7434         return strnlen(buf, count);
7435 }
7436
7437 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7438                    show_debug_level, store_debug_level);
7439
7440 #endif /* CONFIG_IWLWIFI_DEBUG */
7441
7442 static ssize_t show_rf_kill(struct device *d,
7443                             struct device_attribute *attr, char *buf)
7444 {
7445         /*
7446          * 0 - RF kill not enabled
7447          * 1 - SW based RF kill active (sysfs)
7448          * 2 - HW based RF kill active
7449          * 3 - Both HW and SW based RF kill active
7450          */
7451         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7452         int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7453                   (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7454
7455         return sprintf(buf, "%i\n", val);
7456 }
7457
7458 static ssize_t store_rf_kill(struct device *d,
7459                              struct device_attribute *attr,
7460                              const char *buf, size_t count)
7461 {
7462         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7463
7464         mutex_lock(&priv->mutex);
7465         iwl4965_radio_kill_sw(priv, buf[0] == '1');
7466         mutex_unlock(&priv->mutex);
7467
7468         return count;
7469 }
7470
7471 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7472
7473 static ssize_t show_temperature(struct device *d,
7474                                 struct device_attribute *attr, char *buf)
7475 {
7476         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7477
7478         if (!iwl4965_is_alive(priv))
7479                 return -EAGAIN;
7480
7481         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7482 }
7483
7484 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7485
7486 static ssize_t show_rs_window(struct device *d,
7487                               struct device_attribute *attr,
7488                               char *buf)
7489 {
7490         struct iwl_priv *priv = d->driver_data;
7491         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7492 }
7493 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7494
7495 static ssize_t show_tx_power(struct device *d,
7496                              struct device_attribute *attr, char *buf)
7497 {
7498         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7499         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7500 }
7501
7502 static ssize_t store_tx_power(struct device *d,
7503                               struct device_attribute *attr,
7504                               const char *buf, size_t count)
7505 {
7506         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7507         char *p = (char *)buf;
7508         u32 val;
7509
7510         val = simple_strtoul(p, &p, 10);
7511         if (p == buf)
7512                 printk(KERN_INFO DRV_NAME
7513                        ": %s is not in decimal form.\n", buf);
7514         else
7515                 iwl4965_hw_reg_set_txpower(priv, val);
7516
7517         return count;
7518 }
7519
7520 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7521
7522 static ssize_t show_flags(struct device *d,
7523                           struct device_attribute *attr, char *buf)
7524 {
7525         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7526
7527         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7528 }
7529
7530 static ssize_t store_flags(struct device *d,
7531                            struct device_attribute *attr,
7532                            const char *buf, size_t count)
7533 {
7534         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7535         u32 flags = simple_strtoul(buf, NULL, 0);
7536
7537         mutex_lock(&priv->mutex);
7538         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7539                 /* Cancel any currently running scans... */
7540                 if (iwl4965_scan_cancel_timeout(priv, 100))
7541                         IWL_WARNING("Could not cancel scan.\n");
7542                 else {
7543                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7544                                        flags);
7545                         priv->staging_rxon.flags = cpu_to_le32(flags);
7546                         iwl4965_commit_rxon(priv);
7547                 }
7548         }
7549         mutex_unlock(&priv->mutex);
7550
7551         return count;
7552 }
7553
7554 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7555
7556 static ssize_t show_filter_flags(struct device *d,
7557                                  struct device_attribute *attr, char *buf)
7558 {
7559         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7560
7561         return sprintf(buf, "0x%04X\n",
7562                 le32_to_cpu(priv->active_rxon.filter_flags));
7563 }
7564
7565 static ssize_t store_filter_flags(struct device *d,
7566                                   struct device_attribute *attr,
7567                                   const char *buf, size_t count)
7568 {
7569         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7570         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7571
7572         mutex_lock(&priv->mutex);
7573         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7574                 /* Cancel any currently running scans... */
7575                 if (iwl4965_scan_cancel_timeout(priv, 100))
7576                         IWL_WARNING("Could not cancel scan.\n");
7577                 else {
7578                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7579                                        "0x%04X\n", filter_flags);
7580                         priv->staging_rxon.filter_flags =
7581                                 cpu_to_le32(filter_flags);
7582                         iwl4965_commit_rxon(priv);
7583                 }
7584         }
7585         mutex_unlock(&priv->mutex);
7586
7587         return count;
7588 }
7589
7590 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7591                    store_filter_flags);
7592
7593 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7594
7595 static ssize_t show_measurement(struct device *d,
7596                                 struct device_attribute *attr, char *buf)
7597 {
7598         struct iwl_priv *priv = dev_get_drvdata(d);
7599         struct iwl4965_spectrum_notification measure_report;
7600         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7601         u8 *data = (u8 *) & measure_report;
7602         unsigned long flags;
7603
7604         spin_lock_irqsave(&priv->lock, flags);
7605         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7606                 spin_unlock_irqrestore(&priv->lock, flags);
7607                 return 0;
7608         }
7609         memcpy(&measure_report, &priv->measure_report, size);
7610         priv->measurement_status = 0;
7611         spin_unlock_irqrestore(&priv->lock, flags);
7612
7613         while (size && (PAGE_SIZE - len)) {
7614                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7615                                    PAGE_SIZE - len, 1);
7616                 len = strlen(buf);
7617                 if (PAGE_SIZE - len)
7618                         buf[len++] = '\n';
7619
7620                 ofs += 16;
7621                 size -= min(size, 16U);
7622         }
7623
7624         return len;
7625 }
7626
7627 static ssize_t store_measurement(struct device *d,
7628                                  struct device_attribute *attr,
7629                                  const char *buf, size_t count)
7630 {
7631         struct iwl_priv *priv = dev_get_drvdata(d);
7632         struct ieee80211_measurement_params params = {
7633                 .channel = le16_to_cpu(priv->active_rxon.channel),
7634                 .start_time = cpu_to_le64(priv->last_tsf),
7635                 .duration = cpu_to_le16(1),
7636         };
7637         u8 type = IWL_MEASURE_BASIC;
7638         u8 buffer[32];
7639         u8 channel;
7640
7641         if (count) {
7642                 char *p = buffer;
7643                 strncpy(buffer, buf, min(sizeof(buffer), count));
7644                 channel = simple_strtoul(p, NULL, 0);
7645                 if (channel)
7646                         params.channel = channel;
7647
7648                 p = buffer;
7649                 while (*p && *p != ' ')
7650                         p++;
7651                 if (*p)
7652                         type = simple_strtoul(p + 1, NULL, 0);
7653         }
7654
7655         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7656                        "channel %d (for '%s')\n", type, params.channel, buf);
7657         iwl4965_get_measurement(priv, &params, type);
7658
7659         return count;
7660 }
7661
7662 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7663                    show_measurement, store_measurement);
7664 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7665
7666 static ssize_t store_retry_rate(struct device *d,
7667                                 struct device_attribute *attr,
7668                                 const char *buf, size_t count)
7669 {
7670         struct iwl_priv *priv = dev_get_drvdata(d);
7671
7672         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7673         if (priv->retry_rate <= 0)
7674                 priv->retry_rate = 1;
7675
7676         return count;
7677 }
7678
7679 static ssize_t show_retry_rate(struct device *d,
7680                                struct device_attribute *attr, char *buf)
7681 {
7682         struct iwl_priv *priv = dev_get_drvdata(d);
7683         return sprintf(buf, "%d", priv->retry_rate);
7684 }
7685
7686 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7687                    store_retry_rate);
7688
7689 static ssize_t store_power_level(struct device *d,
7690                                  struct device_attribute *attr,
7691                                  const char *buf, size_t count)
7692 {
7693         struct iwl_priv *priv = dev_get_drvdata(d);
7694         int rc;
7695         int mode;
7696
7697         mode = simple_strtoul(buf, NULL, 0);
7698         mutex_lock(&priv->mutex);
7699
7700         if (!iwl4965_is_ready(priv)) {
7701                 rc = -EAGAIN;
7702                 goto out;
7703         }
7704
7705         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7706                 mode = IWL_POWER_AC;
7707         else
7708                 mode |= IWL_POWER_ENABLED;
7709
7710         if (mode != priv->power_mode) {
7711                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7712                 if (rc) {
7713                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7714                         goto out;
7715                 }
7716                 priv->power_mode = mode;
7717         }
7718
7719         rc = count;
7720
7721  out:
7722         mutex_unlock(&priv->mutex);
7723         return rc;
7724 }
7725
7726 #define MAX_WX_STRING 80
7727
7728 /* Values are in microsecond */
7729 static const s32 timeout_duration[] = {
7730         350000,
7731         250000,
7732         75000,
7733         37000,
7734         25000,
7735 };
7736 static const s32 period_duration[] = {
7737         400000,
7738         700000,
7739         1000000,
7740         1000000,
7741         1000000
7742 };
7743
7744 static ssize_t show_power_level(struct device *d,
7745                                 struct device_attribute *attr, char *buf)
7746 {
7747         struct iwl_priv *priv = dev_get_drvdata(d);
7748         int level = IWL_POWER_LEVEL(priv->power_mode);
7749         char *p = buf;
7750
7751         p += sprintf(p, "%d ", level);
7752         switch (level) {
7753         case IWL_POWER_MODE_CAM:
7754         case IWL_POWER_AC:
7755                 p += sprintf(p, "(AC)");
7756                 break;
7757         case IWL_POWER_BATTERY:
7758                 p += sprintf(p, "(BATTERY)");
7759                 break;
7760         default:
7761                 p += sprintf(p,
7762                              "(Timeout %dms, Period %dms)",
7763                              timeout_duration[level - 1] / 1000,
7764                              period_duration[level - 1] / 1000);
7765         }
7766
7767         if (!(priv->power_mode & IWL_POWER_ENABLED))
7768                 p += sprintf(p, " OFF\n");
7769         else
7770                 p += sprintf(p, " \n");
7771
7772         return (p - buf + 1);
7773
7774 }
7775
7776 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7777                    store_power_level);
7778
7779 static ssize_t show_channels(struct device *d,
7780                              struct device_attribute *attr, char *buf)
7781 {
7782         /* all this shit doesn't belong into sysfs anyway */
7783         return 0;
7784 }
7785
7786 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7787
7788 static ssize_t show_statistics(struct device *d,
7789                                struct device_attribute *attr, char *buf)
7790 {
7791         struct iwl_priv *priv = dev_get_drvdata(d);
7792         u32 size = sizeof(struct iwl4965_notif_statistics);
7793         u32 len = 0, ofs = 0;
7794         u8 *data = (u8 *) & priv->statistics;
7795         int rc = 0;
7796
7797         if (!iwl4965_is_alive(priv))
7798                 return -EAGAIN;
7799
7800         mutex_lock(&priv->mutex);
7801         rc = iwl4965_send_statistics_request(priv);
7802         mutex_unlock(&priv->mutex);
7803
7804         if (rc) {
7805                 len = sprintf(buf,
7806                               "Error sending statistics request: 0x%08X\n", rc);
7807                 return len;
7808         }
7809
7810         while (size && (PAGE_SIZE - len)) {
7811                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7812                                    PAGE_SIZE - len, 1);
7813                 len = strlen(buf);
7814                 if (PAGE_SIZE - len)
7815                         buf[len++] = '\n';
7816
7817                 ofs += 16;
7818                 size -= min(size, 16U);
7819         }
7820
7821         return len;
7822 }
7823
7824 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7825
7826 static ssize_t show_antenna(struct device *d,
7827                             struct device_attribute *attr, char *buf)
7828 {
7829         struct iwl_priv *priv = dev_get_drvdata(d);
7830
7831         if (!iwl4965_is_alive(priv))
7832                 return -EAGAIN;
7833
7834         return sprintf(buf, "%d\n", priv->antenna);
7835 }
7836
7837 static ssize_t store_antenna(struct device *d,
7838                              struct device_attribute *attr,
7839                              const char *buf, size_t count)
7840 {
7841         int ant;
7842         struct iwl_priv *priv = dev_get_drvdata(d);
7843
7844         if (count == 0)
7845                 return 0;
7846
7847         if (sscanf(buf, "%1i", &ant) != 1) {
7848                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7849                 return count;
7850         }
7851
7852         if ((ant >= 0) && (ant <= 2)) {
7853                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7854                 priv->antenna = (enum iwl4965_antenna)ant;
7855         } else
7856                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7857
7858
7859         return count;
7860 }
7861
7862 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7863
7864 static ssize_t show_status(struct device *d,
7865                            struct device_attribute *attr, char *buf)
7866 {
7867         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7868         if (!iwl4965_is_alive(priv))
7869                 return -EAGAIN;
7870         return sprintf(buf, "0x%08x\n", (int)priv->status);
7871 }
7872
7873 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7874
7875 static ssize_t dump_error_log(struct device *d,
7876                               struct device_attribute *attr,
7877                               const char *buf, size_t count)
7878 {
7879         char *p = (char *)buf;
7880
7881         if (p[0] == '1')
7882                 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7883
7884         return strnlen(buf, count);
7885 }
7886
7887 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7888
7889 static ssize_t dump_event_log(struct device *d,
7890                               struct device_attribute *attr,
7891                               const char *buf, size_t count)
7892 {
7893         char *p = (char *)buf;
7894
7895         if (p[0] == '1')
7896                 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7897
7898         return strnlen(buf, count);
7899 }
7900
7901 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7902
7903 /*****************************************************************************
7904  *
7905  * driver setup and teardown
7906  *
7907  *****************************************************************************/
7908
7909 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7910 {
7911         priv->workqueue = create_workqueue(DRV_NAME);
7912
7913         init_waitqueue_head(&priv->wait_command_queue);
7914
7915         INIT_WORK(&priv->up, iwl4965_bg_up);
7916         INIT_WORK(&priv->restart, iwl4965_bg_restart);
7917         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7918         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7919         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7920         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7921         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7922         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7923         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7924         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7925         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7926         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7927
7928         iwl4965_hw_setup_deferred_work(priv);
7929
7930         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7931                      iwl4965_irq_tasklet, (unsigned long)priv);
7932 }
7933
7934 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7935 {
7936         iwl4965_hw_cancel_deferred_work(priv);
7937
7938         cancel_delayed_work_sync(&priv->init_alive_start);
7939         cancel_delayed_work(&priv->scan_check);
7940         cancel_delayed_work(&priv->alive_start);
7941         cancel_delayed_work(&priv->post_associate);
7942         cancel_work_sync(&priv->beacon_update);
7943 }
7944
7945 static struct attribute *iwl4965_sysfs_entries[] = {
7946         &dev_attr_antenna.attr,
7947         &dev_attr_channels.attr,
7948         &dev_attr_dump_errors.attr,
7949         &dev_attr_dump_events.attr,
7950         &dev_attr_flags.attr,
7951         &dev_attr_filter_flags.attr,
7952 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7953         &dev_attr_measurement.attr,
7954 #endif
7955         &dev_attr_power_level.attr,
7956         &dev_attr_retry_rate.attr,
7957         &dev_attr_rf_kill.attr,
7958         &dev_attr_rs_window.attr,
7959         &dev_attr_statistics.attr,
7960         &dev_attr_status.attr,
7961         &dev_attr_temperature.attr,
7962         &dev_attr_tx_power.attr,
7963
7964         NULL
7965 };
7966
7967 static struct attribute_group iwl4965_attribute_group = {
7968         .name = NULL,           /* put in device directory */
7969         .attrs = iwl4965_sysfs_entries,
7970 };
7971
7972 static struct ieee80211_ops iwl4965_hw_ops = {
7973         .tx = iwl4965_mac_tx,
7974         .start = iwl4965_mac_start,
7975         .stop = iwl4965_mac_stop,
7976         .add_interface = iwl4965_mac_add_interface,
7977         .remove_interface = iwl4965_mac_remove_interface,
7978         .config = iwl4965_mac_config,
7979         .config_interface = iwl4965_mac_config_interface,
7980         .configure_filter = iwl4965_configure_filter,
7981         .set_key = iwl4965_mac_set_key,
7982         .update_tkip_key = iwl4965_mac_update_tkip_key,
7983         .get_stats = iwl4965_mac_get_stats,
7984         .get_tx_stats = iwl4965_mac_get_tx_stats,
7985         .conf_tx = iwl4965_mac_conf_tx,
7986         .get_tsf = iwl4965_mac_get_tsf,
7987         .reset_tsf = iwl4965_mac_reset_tsf,
7988         .beacon_update = iwl4965_mac_beacon_update,
7989         .bss_info_changed = iwl4965_bss_info_changed,
7990 #ifdef CONFIG_IWL4965_HT
7991         .conf_ht = iwl4965_mac_conf_ht,
7992         .ampdu_action = iwl4965_mac_ampdu_action,
7993 #endif  /* CONFIG_IWL4965_HT */
7994         .hw_scan = iwl4965_mac_hw_scan
7995 };
7996
7997 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7998 {
7999         int err = 0;
8000         struct iwl_priv *priv;
8001         struct ieee80211_hw *hw;
8002         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
8003         DECLARE_MAC_BUF(mac);
8004
8005         /************************
8006          * 1. Allocating HW data
8007          ************************/
8008
8009         /* Disabling hardware scan means that mac80211 will perform scans
8010          * "the hard way", rather than using device's scan. */
8011         if (iwl4965_mod_params.disable_hw_scan) {
8012                 IWL_DEBUG_INFO("Disabling hw_scan\n");
8013                 iwl4965_hw_ops.hw_scan = NULL;
8014         }
8015
8016         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
8017         if (!hw) {
8018                 err = -ENOMEM;
8019                 goto out;
8020         }
8021         priv = hw->priv;
8022         /* At this point both hw and priv are allocated. */
8023
8024         SET_IEEE80211_DEV(hw, &pdev->dev);
8025
8026         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8027         priv->cfg = cfg;
8028         priv->pci_dev = pdev;
8029
8030 #ifdef CONFIG_IWLWIFI_DEBUG
8031         iwl_debug_level = iwl4965_mod_params.debug;
8032         atomic_set(&priv->restrict_refcnt, 0);
8033 #endif
8034
8035         /**************************
8036          * 2. Initializing PCI bus
8037          **************************/
8038         if (pci_enable_device(pdev)) {
8039                 err = -ENODEV;
8040                 goto out_ieee80211_free_hw;
8041         }
8042
8043         pci_set_master(pdev);
8044
8045         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8046         if (!err)
8047                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8048                 if (err) {
8049                         printk(KERN_WARNING DRV_NAME
8050                                 ": No suitable DMA available.\n");
8051                         goto out_pci_disable_device;
8052         }
8053
8054         err = pci_request_regions(pdev, DRV_NAME);
8055         if (err)
8056                 goto out_pci_disable_device;
8057
8058         pci_set_drvdata(pdev, priv);
8059
8060         /* We disable the RETRY_TIMEOUT register (0x41) to keep
8061          * PCI Tx retries from interfering with C3 CPU state */
8062         pci_write_config_byte(pdev, 0x41, 0x00);
8063
8064         /***********************
8065          * 3. Read REV register
8066          ***********************/
8067         priv->hw_base = pci_iomap(pdev, 0, 0);
8068         if (!priv->hw_base) {
8069                 err = -ENODEV;
8070                 goto out_pci_release_regions;
8071         }
8072
8073         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8074                 (unsigned long long) pci_resource_len(pdev, 0));
8075         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8076
8077         printk(KERN_INFO DRV_NAME
8078                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8079
8080         /*****************
8081          * 4. Read EEPROM
8082          *****************/
8083         /* nic init */
8084         iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8085                 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8086
8087         iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8088         err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
8089                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8090                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8091         if (err < 0) {
8092                 IWL_DEBUG_INFO("Failed to init the card\n");
8093                 goto out_iounmap;
8094         }
8095         /* Read the EEPROM */
8096         err = iwl_eeprom_init(priv);
8097         if (err) {
8098                 IWL_ERROR("Unable to init EEPROM\n");
8099                 goto out_iounmap;
8100         }
8101         /* MAC Address location in EEPROM same for 3945/4965 */
8102         iwl_eeprom_get_mac(priv, priv->mac_addr);
8103         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8104         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8105
8106         /************************
8107          * 5. Setup HW constants
8108          ************************/
8109         /* Device-specific setup */
8110         if (iwl4965_hw_set_hw_setting(priv)) {
8111                 IWL_ERROR("failed to set hw settings\n");
8112                 goto out_iounmap;
8113         }
8114
8115         /*******************
8116          * 6. Setup hw/priv
8117          *******************/
8118
8119         err = iwl_setup(priv);
8120         if (err)
8121                 goto out_unset_hw_settings;
8122         /* At this point both hw and priv are initialized. */
8123
8124         /**********************************
8125          * 7. Initialize module parameters
8126          **********************************/
8127
8128         /* Disable radio (SW RF KILL) via parameter when loading driver */
8129         if (iwl4965_mod_params.disable) {
8130                 set_bit(STATUS_RF_KILL_SW, &priv->status);
8131                 IWL_DEBUG_INFO("Radio disabled.\n");
8132         }
8133
8134         if (iwl4965_mod_params.enable_qos)
8135                 priv->qos_data.qos_enable = 1;
8136
8137         /********************
8138          * 8. Setup services
8139          ********************/
8140         iwl4965_disable_interrupts(priv);
8141
8142         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8143         if (err) {
8144                 IWL_ERROR("failed to create sysfs device attributes\n");
8145                 goto out_unset_hw_settings;
8146         }
8147
8148         err = iwl_dbgfs_register(priv, DRV_NAME);
8149         if (err) {
8150                 IWL_ERROR("failed to create debugfs files\n");
8151                 goto out_remove_sysfs;
8152         }
8153
8154         iwl4965_setup_deferred_work(priv);
8155         iwl4965_setup_rx_handlers(priv);
8156
8157         /********************
8158          * 9. Conclude
8159          ********************/
8160         pci_save_state(pdev);
8161         pci_disable_device(pdev);
8162
8163         return 0;
8164
8165  out_remove_sysfs:
8166         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8167  out_unset_hw_settings:
8168         iwl4965_unset_hw_setting(priv);
8169  out_iounmap:
8170         pci_iounmap(pdev, priv->hw_base);
8171  out_pci_release_regions:
8172         pci_release_regions(pdev);
8173         pci_set_drvdata(pdev, NULL);
8174  out_pci_disable_device:
8175         pci_disable_device(pdev);
8176  out_ieee80211_free_hw:
8177         ieee80211_free_hw(priv->hw);
8178  out:
8179         return err;
8180 }
8181
8182 static void iwl4965_pci_remove(struct pci_dev *pdev)
8183 {
8184         struct iwl_priv *priv = pci_get_drvdata(pdev);
8185         struct list_head *p, *q;
8186         int i;
8187
8188         if (!priv)
8189                 return;
8190
8191         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8192
8193         set_bit(STATUS_EXIT_PENDING, &priv->status);
8194
8195         iwl4965_down(priv);
8196
8197         /* Free MAC hash list for ADHOC */
8198         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8199                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8200                         list_del(p);
8201                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8202                 }
8203         }
8204
8205         iwl_dbgfs_unregister(priv);
8206         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8207
8208         iwl4965_dealloc_ucode_pci(priv);
8209
8210         if (priv->rxq.bd)
8211                 iwl4965_rx_queue_free(priv, &priv->rxq);
8212         iwl4965_hw_txq_ctx_free(priv);
8213
8214         iwl4965_unset_hw_setting(priv);
8215         iwlcore_clear_stations_table(priv);
8216
8217         if (priv->mac80211_registered) {
8218                 ieee80211_unregister_hw(priv->hw);
8219                 iwl4965_rate_control_unregister(priv->hw);
8220         }
8221
8222         /*netif_stop_queue(dev); */
8223         flush_workqueue(priv->workqueue);
8224
8225         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8226          * priv->workqueue... so we can't take down the workqueue
8227          * until now... */
8228         destroy_workqueue(priv->workqueue);
8229         priv->workqueue = NULL;
8230
8231         pci_iounmap(pdev, priv->hw_base);
8232         pci_release_regions(pdev);
8233         pci_disable_device(pdev);
8234         pci_set_drvdata(pdev, NULL);
8235
8236         iwl_free_channel_map(priv);
8237         iwl4965_free_geos(priv);
8238
8239         if (priv->ibss_beacon)
8240                 dev_kfree_skb(priv->ibss_beacon);
8241
8242         ieee80211_free_hw(priv->hw);
8243 }
8244
8245 #ifdef CONFIG_PM
8246
8247 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8248 {
8249         struct iwl_priv *priv = pci_get_drvdata(pdev);
8250
8251         if (priv->is_open) {
8252                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8253                 iwl4965_mac_stop(priv->hw);
8254                 priv->is_open = 1;
8255         }
8256
8257         pci_set_power_state(pdev, PCI_D3hot);
8258
8259         return 0;
8260 }
8261
8262 static int iwl4965_pci_resume(struct pci_dev *pdev)
8263 {
8264         struct iwl_priv *priv = pci_get_drvdata(pdev);
8265
8266         pci_set_power_state(pdev, PCI_D0);
8267
8268         if (priv->is_open)
8269                 iwl4965_mac_start(priv->hw);
8270
8271         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8272         return 0;
8273 }
8274
8275 #endif /* CONFIG_PM */
8276
8277 /*****************************************************************************
8278  *
8279  * driver and module entry point
8280  *
8281  *****************************************************************************/
8282
8283 static struct pci_driver iwl4965_driver = {
8284         .name = DRV_NAME,
8285         .id_table = iwl4965_hw_card_ids,
8286         .probe = iwl4965_pci_probe,
8287         .remove = __devexit_p(iwl4965_pci_remove),
8288 #ifdef CONFIG_PM
8289         .suspend = iwl4965_pci_suspend,
8290         .resume = iwl4965_pci_resume,
8291 #endif
8292 };
8293
8294 static int __init iwl4965_init(void)
8295 {
8296
8297         int ret;
8298         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8299         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8300         ret = pci_register_driver(&iwl4965_driver);
8301         if (ret) {
8302                 IWL_ERROR("Unable to initialize PCI module\n");
8303                 return ret;
8304         }
8305 #ifdef CONFIG_IWLWIFI_DEBUG
8306         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8307         if (ret) {
8308                 IWL_ERROR("Unable to create driver sysfs file\n");
8309                 pci_unregister_driver(&iwl4965_driver);
8310                 return ret;
8311         }
8312 #endif
8313
8314         return ret;
8315 }
8316
8317 static void __exit iwl4965_exit(void)
8318 {
8319 #ifdef CONFIG_IWLWIFI_DEBUG
8320         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8321 #endif
8322         pci_unregister_driver(&iwl4965_driver);
8323 }
8324
8325 module_param_named(antenna, iwl4965_mod_params.antenna, int, 0444);
8326 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8327 module_param_named(disable, iwl4965_mod_params.disable, int, 0444);
8328 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8329 module_param_named(hwcrypto, iwl4965_mod_params.hw_crypto, int, 0444);
8330 MODULE_PARM_DESC(hwcrypto,
8331                  "using hardware crypto engine (default 0 [software])\n");
8332 module_param_named(debug, iwl4965_mod_params.debug, int, 0444);
8333 MODULE_PARM_DESC(debug, "debug output mask");
8334 module_param_named(
8335         disable_hw_scan, iwl4965_mod_params.disable_hw_scan, int, 0444);
8336 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8337
8338 module_param_named(queues_num, iwl4965_mod_params.num_of_queues, int, 0444);
8339 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8340
8341 /* QoS */
8342 module_param_named(qos_enable, iwl4965_mod_params.enable_qos, int, 0444);
8343 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8344 module_param_named(amsdu_size_8K, iwl4965_mod_params.amsdu_size_8K, int, 0444);
8345 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
8346
8347 module_exit(iwl4965_exit);
8348 module_init(iwl4965_init);