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-4965.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54
  55 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
  56                                   struct iwl4965_tx_queue *txq);
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /*
  65  * module name, copyright, version, etc.
  66  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  67  */
  68
  69 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  70
  71 #ifdef CONFIG_IWLWIFI_DEBUG
  72 #define VD "d"
  73 #else
  74 #define VD
  75 #endif
  76
  77 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  78 #define VS "s"
  79 #else
  80 #define VS
  81 #endif
  82
  83 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  84
  85
  86 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  87 MODULE_VERSION(DRV_VERSION);
  88 MODULE_AUTHOR(DRV_COPYRIGHT);
  89 MODULE_LICENSE("GPL");
  90
  91 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
  92 {
  93         u16 fc = le16_to_cpu(hdr->frame_control);
  94         int hdr_len = ieee80211_get_hdrlen(fc);
  95
  96         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
  97                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
  98         return NULL;
  99 }
 100
 101 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
 102                 struct iwl_priv *priv, enum ieee80211_band band)
 103 {
 104         return priv->hw->wiphy->bands[band];
 105 }
 106
 107 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
 108 {
 109         /* Single white space is for Linksys APs */
 110         if (essid_len == 1 && essid[0] == ' ')
 111                 return 1;
 112
 113         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 114         while (essid_len) {
 115                 essid_len--;
 116                 if (essid[essid_len] != '\0')
 117                         return 0;
 118         }
 119
 120         return 1;
 121 }
 122
 123 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 124 {
 125         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 126         const char *s = essid;
 127         char *d = escaped;
 128
 129         if (iwl4965_is_empty_essid(essid, essid_len)) {
 130                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 131                 return escaped;
 132         }
 133
 134         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 135         while (essid_len--) {
 136                 if (*s == '\0') {
 137                         *d++ = '\\';
 138                         *d++ = '0';
 139                         s++;
 140                 } else
 141                         *d++ = *s++;
 142         }
 143         *d = '\0';
 144         return escaped;
 145 }
 146
 147 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 148  * DMA services
 149  *
 150  * Theory of operation
 151  *
 152  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 153  * of buffer descriptors, each of which points to one or more data buffers for
 154  * the device to read from or fill.  Driver and device exchange status of each
 155  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 156  * entries in each circular buffer, to protect against confusing empty and full
 157  * queue states.
 158  *
 159  * The device reads or writes the data in the queues via the device's several
 160  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
 161  *
 162  * For Tx queue, there are low mark and high mark limits. If, after queuing
 163  * the packet for Tx, free space become < low mark, Tx queue stopped. When
 164  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 165  * Tx queue resumed.
 166  *
 167  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
 168  * queue (#4) for sending commands to the device firmware, and 15 other
 169  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
 170  *
 171  * See more detailed info in iwl-4965-hw.h.
 172  ***************************************************/
 173
 174 int iwl4965_queue_space(const struct iwl4965_queue *q)
 175 {
 176         int s = q->read_ptr - q->write_ptr;
 177
 178         if (q->read_ptr > q->write_ptr)
 179                 s -= q->n_bd;
 180
 181         if (s <= 0)
 182                 s += q->n_window;
 183         /* keep some reserve to not confuse empty and full situations */
 184         s -= 2;
 185         if (s < 0)
 186                 s = 0;
 187         return s;
 188 }
 189
 190
 191 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
 192 {
 193         return q->write_ptr > q->read_ptr ?
 194                 (i >= q->read_ptr && i < q->write_ptr) :
 195                 !(i < q->read_ptr && i >= q->write_ptr);
 196 }
 197
 198 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
 199 {
 200         /* This is for scan command, the big buffer at end of command array */
 201         if (is_huge)
 202                 return q->n_window;     /* must be power of 2 */
 203
 204         /* Otherwise, use normal size buffers */
 205         return index & (q->n_window - 1);
 206 }
 207
 208 /**
 209  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
 210  */
 211 static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
 212                           int count, int slots_num, u32 id)
 213 {
 214         q->n_bd = count;
 215         q->n_window = slots_num;
 216         q->id = id;
 217
 218         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
 219          * and iwl_queue_dec_wrap are broken. */
 220         BUG_ON(!is_power_of_2(count));
 221
 222         /* slots_num must be power-of-two size, otherwise
 223          * get_cmd_index is broken. */
 224         BUG_ON(!is_power_of_2(slots_num));
 225
 226         q->low_mark = q->n_window / 4;
 227         if (q->low_mark < 4)
 228                 q->low_mark = 4;
 229
 230         q->high_mark = q->n_window / 8;
 231         if (q->high_mark < 2)
 232                 q->high_mark = 2;
 233
 234         q->write_ptr = q->read_ptr = 0;
 235
 236         return 0;
 237 }
 238
 239 /**
 240  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 241  */
 242 static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
 243                               struct iwl4965_tx_queue *txq, u32 id)
 244 {
 245         struct pci_dev *dev = priv->pci_dev;
 246
 247         /* Driver private data, only for Tx (not command) queues,
 248          * not shared with device. */
 249         if (id != IWL_CMD_QUEUE_NUM) {
 250                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
 251                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 252                 if (!txq->txb) {
 253                         IWL_ERROR("kmalloc for auxiliary BD "
 254                                   "structures failed\n");
 255                         goto error;
 256                 }
 257         } else
 258                 txq->txb = NULL;
 259
 260         /* Circular buffer of transmit frame descriptors (TFDs),
 261          * shared with device */
 262         txq->bd = pci_alloc_consistent(dev,
 263                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
 264                         &txq->q.dma_addr);
 265
 266         if (!txq->bd) {
 267                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
 268                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
 269                 goto error;
 270         }
 271         txq->q.id = id;
 272
 273         return 0;
 274
 275  error:
 276         if (txq->txb) {
 277                 kfree(txq->txb);
 278                 txq->txb = NULL;
 279         }
 280
 281         return -ENOMEM;
 282 }
 283
 284 /**
 285  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
 286  */
 287 int iwl4965_tx_queue_init(struct iwl_priv *priv,
 288                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
 289 {
 290         struct pci_dev *dev = priv->pci_dev;
 291         int len;
 292         int rc = 0;
 293
 294         /*
 295          * Alloc buffer array for commands (Tx or other types of commands).
 296          * For the command queue (#4), allocate command space + one big
 297          * command for scan, since scan command is very huge; the system will
 298          * not have two scans at the same time, so only one is needed.
 299          * For normal Tx queues (all other queues), no super-size command
 300          * space is needed.
 301          */
 302         len = sizeof(struct iwl_cmd) * slots_num;
 303         if (txq_id == IWL_CMD_QUEUE_NUM)
 304                 len +=  IWL_MAX_SCAN_SIZE;
 305         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
 306         if (!txq->cmd)
 307                 return -ENOMEM;
 308
 309         /* Alloc driver data array and TFD circular buffer */
 310         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
 311         if (rc) {
 312                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 313
 314                 return -ENOMEM;
 315         }
 316         txq->need_update = 0;
 317
 318         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
 319          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
 320         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
 321
 322         /* Initialize queue's high/low-water marks, and head/tail indexes */
 323         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 324
 325         /* Tell device where to find queue */
 326         iwl4965_hw_tx_queue_init(priv, txq);
 327
 328         return 0;
 329 }
 330
 331 /**
 332  * iwl4965_tx_queue_free - Deallocate DMA queue.
 333  * @txq: Transmit queue to deallocate.
 334  *
 335  * Empty queue by removing and destroying all BD's.
 336  * Free all buffers.
 337  * 0-fill, but do not free "txq" descriptor structure.
 338  */
 339 void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
 340 {
 341         struct iwl4965_queue *q = &txq->q;
 342         struct pci_dev *dev = priv->pci_dev;
 343         int len;
 344
 345         if (q->n_bd == 0)
 346                 return;
 347
 348         /* first, empty all BD's */
 349         for (; q->write_ptr != q->read_ptr;
 350              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
 351                 iwl4965_hw_txq_free_tfd(priv, txq);
 352
 353         len = sizeof(struct iwl_cmd) * q->n_window;
 354         if (q->id == IWL_CMD_QUEUE_NUM)
 355                 len += IWL_MAX_SCAN_SIZE;
 356
 357         /* De-alloc array of command/tx buffers */
 358         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
 359
 360         /* De-alloc circular buffer of TFDs */
 361         if (txq->q.n_bd)
 362                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
 363                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
 364
 365         /* De-alloc array of per-TFD driver data */
 366         if (txq->txb) {
 367                 kfree(txq->txb);
 368                 txq->txb = NULL;
 369         }
 370
 371         /* 0-fill queue descriptor structure */
 372         memset(txq, 0, sizeof(*txq));
 373 }
 374
 375 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 376
 377 /*************** STATION TABLE MANAGEMENT ****
 378  * mac80211 should be examined to determine if sta_info is duplicating
 379  * the functionality provided here
 380  */
 381
 382 /**************************************************************/
 383
 384 #if 0 /* temporary disable till we add real remove station */
 385 /**
 386  * iwl4965_remove_station - Remove driver's knowledge of station.
 387  *
 388  * NOTE:  This does not remove station from device's station table.
 389  */
 390 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 391 {
 392         int index = IWL_INVALID_STATION;
 393         int i;
 394         unsigned long flags;
 395
 396         spin_lock_irqsave(&priv->sta_lock, flags);
 397
 398         if (is_ap)
 399                 index = IWL_AP_ID;
 400         else if (is_broadcast_ether_addr(addr))
 401                 index = priv->hw_setting.bcast_sta_id;
 402         else
 403                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
 404                         if (priv->stations[i].used &&
 405                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 406                                                 addr)) {
 407                                 index = i;
 408                                 break;
 409                         }
 410
 411         if (unlikely(index == IWL_INVALID_STATION))
 412                 goto out;
 413
 414         if (priv->stations[index].used) {
 415                 priv->stations[index].used = 0;
 416                 priv->num_stations--;
 417         }
 418
 419         BUG_ON(priv->num_stations < 0);
 420
 421 out:
 422         spin_unlock_irqrestore(&priv->sta_lock, flags);
 423         return 0;
 424 }
 425 #endif
 426
 427 /**
 428  * iwl4965_add_station_flags - Add station to tables in driver and device
 429  */
 430 u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
 431                                 int is_ap, u8 flags, void *ht_data)
 432 {
 433         int i;
 434         int index = IWL_INVALID_STATION;
 435         struct iwl4965_station_entry *station;
 436         unsigned long flags_spin;
 437         DECLARE_MAC_BUF(mac);
 438
 439         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 440         if (is_ap)
 441                 index = IWL_AP_ID;
 442         else if (is_broadcast_ether_addr(addr))
 443                 index = priv->hw_setting.bcast_sta_id;
 444         else
 445                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
 446                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
 447                                                 addr)) {
 448                                 index = i;
 449                                 break;
 450                         }
 451
 452                         if (!priv->stations[i].used &&
 453                             index == IWL_INVALID_STATION)
 454                                 index = i;
 455                 }
 456
 457
 458         /* These two conditions have the same outcome, but keep them separate
 459           since they have different meanings */
 460         if (unlikely(index == IWL_INVALID_STATION)) {
 461                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 462                 return index;
 463         }
 464
 465         if (priv->stations[index].used &&
 466             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
 467                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 468                 return index;
 469         }
 470
 471
 472         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
 473         station = &priv->stations[index];
 474         station->used = 1;
 475         priv->num_stations++;
 476
 477         /* Set up the REPLY_ADD_STA command to send to device */
 478         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
 479         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
 480         station->sta.mode = 0;
 481         station->sta.sta.sta_id = index;
 482         station->sta.station_flags = 0;
 483
 484 #ifdef CONFIG_IWL4965_HT
 485         /* BCAST station and IBSS stations do not work in HT mode */
 486         if (index != priv->hw_setting.bcast_sta_id &&
 487             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
 488                 iwl4965_set_ht_add_station(priv, index,
 489                                  (struct ieee80211_ht_info *) ht_data);
 490 #endif /*CONFIG_IWL4965_HT*/
 491
 492         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 493
 494         /* Add station to device's station table */
 495         iwl4965_send_add_station(priv, &station->sta, flags);
 496         return index;
 497
 498 }
 499
 500
 501
 502 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 503
 504 /**
 505  * iwl4965_enqueue_hcmd - enqueue a uCode command
 506  * @priv: device private data point
 507  * @cmd: a point to the ucode command structure
 508  *
 509  * The function returns < 0 values to indicate the operation is
 510  * failed. On success, it turns the index (> 0) of command in the
 511  * command queue.
 512  */
 513 int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 514 {
 515         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 516         struct iwl4965_queue *q = &txq->q;
 517         struct iwl4965_tfd_frame *tfd;
 518         u32 *control_flags;
 519         struct iwl_cmd *out_cmd;
 520         u32 idx;
 521         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
 522         dma_addr_t phys_addr;
 523         int ret;
 524         unsigned long flags;
 525
 526         /* If any of the command structures end up being larger than
 527          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
 528          * we will need to increase the size of the TFD entries */
 529         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 530                !(cmd->meta.flags & CMD_SIZE_HUGE));
 531
 532         if (iwl_is_rfkill(priv)) {
 533                 IWL_DEBUG_INFO("Not sending command - RF KILL");
 534                 return -EIO;
 535         }
 536
 537         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
 538                 IWL_ERROR("No space for Tx\n");
 539                 return -ENOSPC;
 540         }
 541
 542         spin_lock_irqsave(&priv->hcmd_lock, flags);
 543
 544         tfd = &txq->bd[q->write_ptr];
 545         memset(tfd, 0, sizeof(*tfd));
 546
 547         control_flags = (u32 *) tfd;
 548
 549         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 550         out_cmd = &txq->cmd[idx];
 551
 552         out_cmd->hdr.cmd = cmd->id;
 553         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
 554         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
 555
 556         /* At this point, the out_cmd now has all of the incoming cmd
 557          * information */
 558
 559         out_cmd->hdr.flags = 0;
 560         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
 561                         INDEX_TO_SEQ(q->write_ptr));
 562         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 563                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
 564
 565         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
 566                         offsetof(struct iwl_cmd, hdr);
 567         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 568
 569         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
 570                      "%d bytes at %d[%d]:%d\n",
 571                      get_cmd_string(out_cmd->hdr.cmd),
 572                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
 573                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
 574
 575         txq->need_update = 1;
 576
 577         /* Set up entry in queue's byte count circular buffer */
 578         priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
 579
 580         /* Increment and update queue's write index */
 581         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
 582         ret = iwl4965_tx_queue_update_write_ptr(priv, txq);
 583
 584         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
 585         return ret ? ret : idx;
 586 }
 587
 588 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 589 {
 590         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
 591
 592         if (hw_decrypt)
 593                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 594         else
 595                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 596
 597 }
 598
 599 int iwl4965_send_statistics_request(struct iwl_priv *priv)
 600 {
 601         u32 flags = 0;
 602         return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 603                                       sizeof(flags), &flags);
 604 }
 605
 606 /**
 607  * iwl4965_rxon_add_station - add station into station table.
 608  *
 609  * there is only one AP station with id= IWL_AP_ID
 610  * NOTE: mutex must be held before calling this fnction
 611  */
 612 static int iwl4965_rxon_add_station(struct iwl_priv *priv,
 613                                 const u8 *addr, int is_ap)
 614 {
 615         u8 sta_id;
 616
 617         /* Add station to device's station table */
 618 #ifdef CONFIG_IWL4965_HT
 619         struct ieee80211_conf *conf = &priv->hw->conf;
 620         struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
 621
 622         if ((is_ap) &&
 623             (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
 624             (priv->iw_mode == IEEE80211_IF_TYPE_STA))
 625                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 626                                                    0, cur_ht_config);
 627         else
 628 #endif /* CONFIG_IWL4965_HT */
 629                 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
 630                                                    0, NULL);
 631
 632         /* Set up default rate scaling table in device's station table */
 633         iwl4965_add_station(priv, addr, is_ap);
 634
 635         return sta_id;
 636 }
 637
 638 /**
 639  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 640  *
 641  * NOTE:  This is really only useful during development and can eventually
 642  * be #ifdef'd out once the driver is stable and folks aren't actively
 643  * making changes
 644  */
 645 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
 646 {
 647         int error = 0;
 648         int counter = 1;
 649
 650         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 651                 error |= le32_to_cpu(rxon->flags &
 652                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 653                                  RXON_FLG_RADAR_DETECT_MSK));
 654                 if (error)
 655                         IWL_WARNING("check 24G fields %d | %d\n",
 656                                     counter++, error);
 657         } else {
 658                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 659                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 660                 if (error)
 661                         IWL_WARNING("check 52 fields %d | %d\n",
 662                                     counter++, error);
 663                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 664                 if (error)
 665                         IWL_WARNING("check 52 CCK %d | %d\n",
 666                                     counter++, error);
 667         }
 668         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 669         if (error)
 670                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 671
 672         /* make sure basic rates 6Mbps and 1Mbps are supported */
 673         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 674                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 675         if (error)
 676                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 677
 678         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 679         if (error)
 680                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 681
 682         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 683                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 684         if (error)
 685                 IWL_WARNING("check CCK and short slot %d | %d\n",
 686                             counter++, error);
 687
 688         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 689                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 690         if (error)
 691                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 692                             counter++, error);
 693
 694         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 695                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 696         if (error)
 697                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 698                             counter++, error);
 699
 700         if (error)
 701                 IWL_WARNING("Tuning to channel %d\n",
 702                             le16_to_cpu(rxon->channel));
 703
 704         if (error) {
 705                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 706                 return -1;
 707         }
 708         return 0;
 709 }
 710
 711 /**
 712  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 713  * @priv: staging_rxon is compared to active_rxon
 714  *
 715  * If the RXON structure is changing enough to require a new tune,
 716  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 717  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 718  */
 719 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 720 {
 721
 722         /* These items are only settable from the full RXON command */
 723         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 724             compare_ether_addr(priv->staging_rxon.bssid_addr,
 725                                priv->active_rxon.bssid_addr) ||
 726             compare_ether_addr(priv->staging_rxon.node_addr,
 727                                priv->active_rxon.node_addr) ||
 728             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 729                                priv->active_rxon.wlap_bssid_addr) ||
 730             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 731             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 732             (priv->staging_rxon.air_propagation !=
 733              priv->active_rxon.air_propagation) ||
 734             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 735              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 736             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 737              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 738             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 739             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 740                 return 1;
 741
 742         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 743          * be updated with the RXON_ASSOC command -- however only some
 744          * flag transitions are allowed using RXON_ASSOC */
 745
 746         /* Check if we are not switching bands */
 747         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 748             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 749                 return 1;
 750
 751         /* Check if we are switching association toggle */
 752         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 753                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 754                 return 1;
 755
 756         return 0;
 757 }
 758
 759 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
 760 {
 761         int ret = 0;
 762         struct iwl4965_rxon_assoc_cmd rxon_assoc;
 763         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
 764         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
 765
 766         if ((rxon1->flags == rxon2->flags) &&
 767             (rxon1->filter_flags == rxon2->filter_flags) &&
 768             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 769             (rxon1->ofdm_ht_single_stream_basic_rates ==
 770              rxon2->ofdm_ht_single_stream_basic_rates) &&
 771             (rxon1->ofdm_ht_dual_stream_basic_rates ==
 772              rxon2->ofdm_ht_dual_stream_basic_rates) &&
 773             (rxon1->rx_chain == rxon2->rx_chain) &&
 774             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 775                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 776                 return 0;
 777         }
 778
 779         rxon_assoc.flags = priv->staging_rxon.flags;
 780         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
 781         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
 782         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
 783         rxon_assoc.reserved = 0;
 784         rxon_assoc.ofdm_ht_single_stream_basic_rates =
 785             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
 786         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
 787             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
 788         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
 789
 790         ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
 791                                      sizeof(rxon_assoc), &rxon_assoc, NULL);
 792         if (ret)
 793                 return ret;
 794
 795         return ret;
 796 }
 797
 798 /**
 799  * iwl4965_commit_rxon - commit staging_rxon to hardware
 800  *
 801  * The RXON command in staging_rxon is committed to the hardware and
 802  * the active_rxon structure is updated with the new data.  This
 803  * function correctly transitions out of the RXON_ASSOC_MSK state if
 804  * a HW tune is required based on the RXON structure changes.
 805  */
 806 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 807 {
 808         /* cast away the const for active_rxon in this function */
 809         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 810         DECLARE_MAC_BUF(mac);
 811         int rc = 0;
 812
 813         if (!iwl_is_alive(priv))
 814                 return -1;
 815
 816         /* always get timestamp with Rx frame */
 817         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 818
 819         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 820         if (rc) {
 821                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 822                 return -EINVAL;
 823         }
 824
 825         /* If we don't need to send a full RXON, we can use
 826          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 827          * and other flags for the current radio configuration. */
 828         if (!iwl4965_full_rxon_required(priv)) {
 829                 rc = iwl4965_send_rxon_assoc(priv);
 830                 if (rc) {
 831                         IWL_ERROR("Error setting RXON_ASSOC "
 832                                   "configuration (%d).\n", rc);
 833                         return rc;
 834                 }
 835
 836                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 837
 838                 return 0;
 839         }
 840
 841         /* station table will be cleared */
 842         priv->assoc_station_added = 0;
 843
 844 #ifdef CONFIG_IWL4965_SENSITIVITY
 845         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 846         if (!priv->error_recovering)
 847                 priv->start_calib = 0;
 848
 849         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 850 #endif /* CONFIG_IWL4965_SENSITIVITY */
 851
 852         /* If we are currently associated and the new config requires
 853          * an RXON_ASSOC and the new config wants the associated mask enabled,
 854          * we must clear the associated from the active configuration
 855          * before we apply the new config */
 856         if (iwl_is_associated(priv) &&
 857             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 858                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 859                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 860
 861                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 862                                       sizeof(struct iwl4965_rxon_cmd),
 863                                       &priv->active_rxon);
 864
 865                 /* If the mask clearing failed then we set
 866                  * active_rxon back to what it was previously */
 867                 if (rc) {
 868                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 869                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 870                                   "configuration (%d).\n", rc);
 871                         return rc;
 872                 }
 873         }
 874
 875         IWL_DEBUG_INFO("Sending RXON\n"
 876                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 877                        "* channel = %d\n"
 878                        "* bssid = %s\n",
 879                        ((priv->staging_rxon.filter_flags &
 880                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 881                        le16_to_cpu(priv->staging_rxon.channel),
 882                        print_mac(mac, priv->staging_rxon.bssid_addr));
 883
 884         iwl4965_set_rxon_hwcrypto(priv, priv->cfg->mod_params->hw_crypto);
 885         /* Apply the new configuration */
 886         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 887                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
 888         if (rc) {
 889                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 890                 return rc;
 891         }
 892
 893         iwlcore_clear_stations_table(priv);
 894
 895 #ifdef CONFIG_IWL4965_SENSITIVITY
 896         if (!priv->error_recovering)
 897                 priv->start_calib = 0;
 898
 899         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 900         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 901 #endif /* CONFIG_IWL4965_SENSITIVITY */
 902
 903         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 904
 905         /* If we issue a new RXON command which required a tune then we must
 906          * send a new TXPOWER command or we won't be able to Tx any frames */
 907         rc = iwl4965_hw_reg_send_txpower(priv);
 908         if (rc) {
 909                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 910                 return rc;
 911         }
 912
 913         /* Add the broadcast address so we can send broadcast frames */
 914         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
 915             IWL_INVALID_STATION) {
 916                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 917                 return -EIO;
 918         }
 919
 920         /* If we have set the ASSOC_MSK and we are in BSS mode then
 921          * add the IWL_AP_ID to the station rate table */
 922         if (iwl_is_associated(priv) &&
 923             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 924                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 925                     == IWL_INVALID_STATION) {
 926                         IWL_ERROR("Error adding AP address for transmit.\n");
 927                         return -EIO;
 928                 }
 929                 priv->assoc_station_added = 1;
 930                 if (priv->default_wep_key &&
 931                     iwl_send_static_wepkey_cmd(priv, 0))
 932                         IWL_ERROR("Could not send WEP static key.\n");
 933         }
 934
 935         return 0;
 936 }
 937
 938 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 939 {
 940         struct iwl4965_bt_cmd bt_cmd = {
 941                 .flags = 3,
 942                 .lead_time = 0xAA,
 943                 .max_kill = 1,
 944                 .kill_ack_mask = 0,
 945                 .kill_cts_mask = 0,
 946         };
 947
 948         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 949                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 950 }
 951
 952 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 953 {
 954         int rc = 0;
 955         struct iwl4965_rx_packet *res;
 956         struct iwl_host_cmd cmd = {
 957                 .id = REPLY_SCAN_ABORT_CMD,
 958                 .meta.flags = CMD_WANT_SKB,
 959         };
 960
 961         /* If there isn't a scan actively going on in the hardware
 962          * then we are in between scan bands and not actually
 963          * actively scanning, so don't send the abort command */
 964         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 965                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 966                 return 0;
 967         }
 968
 969         rc = iwl_send_cmd_sync(priv, &cmd);
 970         if (rc) {
 971                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 972                 return rc;
 973         }
 974
 975         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
 976         if (res->u.status != CAN_ABORT_STATUS) {
 977                 /* The scan abort will return 1 for success or
 978                  * 2 for "failure".  A failure condition can be
 979                  * due to simply not being in an active scan which
 980                  * can occur if we send the scan abort before we
 981                  * the microcode has notified us that a scan is
 982                  * completed. */
 983                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
 984                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 985                 clear_bit(STATUS_SCAN_HW, &priv->status);
 986         }
 987
 988         dev_kfree_skb_any(cmd.meta.u.skb);
 989
 990         return rc;
 991 }
 992
 993 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
 994                                         struct iwl_cmd *cmd,
 995                                         struct sk_buff *skb)
 996 {
 997         return 1;
 998 }
 999
1000 /*
1001  * CARD_STATE_CMD
1002  *
1003  * Use: Sets the device's internal card state to enable, disable, or halt
1004  *
1005  * When in the 'enable' state the card operates as normal.
1006  * When in the 'disable' state, the card enters into a low power mode.
1007  * When in the 'halt' state, the card is shut down and must be fully
1008  * restarted to come back on.
1009  */
1010 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1011 {
1012         struct iwl_host_cmd cmd = {
1013                 .id = REPLY_CARD_STATE_CMD,
1014                 .len = sizeof(u32),
1015                 .data = &flags,
1016                 .meta.flags = meta_flag,
1017         };
1018
1019         if (meta_flag & CMD_ASYNC)
1020                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1021
1022         return iwl_send_cmd(priv, &cmd);
1023 }
1024
1025 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
1026                                      struct iwl_cmd *cmd, struct sk_buff *skb)
1027 {
1028         struct iwl4965_rx_packet *res = NULL;
1029
1030         if (!skb) {
1031                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1032                 return 1;
1033         }
1034
1035         res = (struct iwl4965_rx_packet *)skb->data;
1036         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1037                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1038                           res->hdr.flags);
1039                 return 1;
1040         }
1041
1042         switch (res->u.add_sta.status) {
1043         case ADD_STA_SUCCESS_MSK:
1044                 break;
1045         default:
1046                 break;
1047         }
1048
1049         /* We didn't cache the SKB; let the caller free it */
1050         return 1;
1051 }
1052
1053 int iwl4965_send_add_station(struct iwl_priv *priv,
1054                          struct iwl4965_addsta_cmd *sta, u8 flags)
1055 {
1056         struct iwl4965_rx_packet *res = NULL;
1057         int rc = 0;
1058         struct iwl_host_cmd cmd = {
1059                 .id = REPLY_ADD_STA,
1060                 .len = sizeof(struct iwl4965_addsta_cmd),
1061                 .meta.flags = flags,
1062                 .data = sta,
1063         };
1064
1065         if (flags & CMD_ASYNC)
1066                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1067         else
1068                 cmd.meta.flags |= CMD_WANT_SKB;
1069
1070         rc = iwl_send_cmd(priv, &cmd);
1071
1072         if (rc || (flags & CMD_ASYNC))
1073                 return rc;
1074
1075         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1076         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1077                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1078                           res->hdr.flags);
1079                 rc = -EIO;
1080         }
1081
1082         if (rc == 0) {
1083                 switch (res->u.add_sta.status) {
1084                 case ADD_STA_SUCCESS_MSK:
1085                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1086                         break;
1087                 default:
1088                         rc = -EIO;
1089                         IWL_WARNING("REPLY_ADD_STA failed\n");
1090                         break;
1091                 }
1092         }
1093
1094         priv->alloc_rxb_skb--;
1095         dev_kfree_skb_any(cmd.meta.u.skb);
1096
1097         return rc;
1098 }
1099
1100 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1101 {
1102         struct list_head *element;
1103
1104         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1105                        priv->frames_count);
1106
1107         while (!list_empty(&priv->free_frames)) {
1108                 element = priv->free_frames.next;
1109                 list_del(element);
1110                 kfree(list_entry(element, struct iwl4965_frame, list));
1111                 priv->frames_count--;
1112         }
1113
1114         if (priv->frames_count) {
1115                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1116                             priv->frames_count);
1117                 priv->frames_count = 0;
1118         }
1119 }
1120
1121 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1122 {
1123         struct iwl4965_frame *frame;
1124         struct list_head *element;
1125         if (list_empty(&priv->free_frames)) {
1126                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1127                 if (!frame) {
1128                         IWL_ERROR("Could not allocate frame!\n");
1129                         return NULL;
1130                 }
1131
1132                 priv->frames_count++;
1133                 return frame;
1134         }
1135
1136         element = priv->free_frames.next;
1137         list_del(element);
1138         return list_entry(element, struct iwl4965_frame, list);
1139 }
1140
1141 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1142 {
1143         memset(frame, 0, sizeof(*frame));
1144         list_add(&frame->list, &priv->free_frames);
1145 }
1146
1147 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1148                                 struct ieee80211_hdr *hdr,
1149                                 const u8 *dest, int left)
1150 {
1151
1152         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1153             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1154              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1155                 return 0;
1156
1157         if (priv->ibss_beacon->len > left)
1158                 return 0;
1159
1160         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1161
1162         return priv->ibss_beacon->len;
1163 }
1164
1165 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1166 {
1167         u8 i;
1168
1169         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1170              i = iwl4965_rates[i].next_ieee) {
1171                 if (rate_mask & (1 << i))
1172                         return iwl4965_rates[i].plcp;
1173         }
1174
1175         return IWL_RATE_INVALID;
1176 }
1177
1178 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1179 {
1180         struct iwl4965_frame *frame;
1181         unsigned int frame_size;
1182         int rc;
1183         u8 rate;
1184
1185         frame = iwl4965_get_free_frame(priv);
1186
1187         if (!frame) {
1188                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1189                           "command.\n");
1190                 return -ENOMEM;
1191         }
1192
1193         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1194                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1195                                                 0xFF0);
1196                 if (rate == IWL_INVALID_RATE)
1197                         rate = IWL_RATE_6M_PLCP;
1198         } else {
1199                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1200                 if (rate == IWL_INVALID_RATE)
1201                         rate = IWL_RATE_1M_PLCP;
1202         }
1203
1204         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1205
1206         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1207                               &frame->u.cmd[0]);
1208
1209         iwl4965_free_frame(priv, frame);
1210
1211         return rc;
1212 }
1213
1214 /******************************************************************************
1215  *
1216  * Misc. internal state and helper functions
1217  *
1218  ******************************************************************************/
1219
1220 static void iwl4965_unset_hw_setting(struct iwl_priv *priv)
1221 {
1222         if (priv->shared_virt)
1223                 pci_free_consistent(priv->pci_dev,
1224                                     sizeof(struct iwl4965_shared),
1225                                     priv->shared_virt,
1226                                     priv->shared_phys);
1227 }
1228
1229 /**
1230  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1231  *
1232  * return : set the bit for each supported rate insert in ie
1233  */
1234 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1235                                     u16 basic_rate, int *left)
1236 {
1237         u16 ret_rates = 0, bit;
1238         int i;
1239         u8 *cnt = ie;
1240         u8 *rates = ie + 1;
1241
1242         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1243                 if (bit & supported_rate) {
1244                         ret_rates |= bit;
1245                         rates[*cnt] = iwl4965_rates[i].ieee |
1246                                 ((bit & basic_rate) ? 0x80 : 0x00);
1247                         (*cnt)++;
1248                         (*left)--;
1249                         if ((*left <= 0) ||
1250                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1251                                 break;
1252                 }
1253         }
1254
1255         return ret_rates;
1256 }
1257
1258 /**
1259  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1260  */
1261 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1262                                   enum ieee80211_band band,
1263                                   struct ieee80211_mgmt *frame,
1264                                   int left, int is_direct)
1265 {
1266         int len = 0;
1267         u8 *pos = NULL;
1268         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1269 #ifdef CONFIG_IWL4965_HT
1270         const struct ieee80211_supported_band *sband =
1271                                                 iwl4965_get_hw_mode(priv, band);
1272 #endif /* CONFIG_IWL4965_HT */
1273
1274         /* Make sure there is enough space for the probe request,
1275          * two mandatory IEs and the data */
1276         left -= 24;
1277         if (left < 0)
1278                 return 0;
1279         len += 24;
1280
1281         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1282         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1283         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1284         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1285         frame->seq_ctrl = 0;
1286
1287         /* fill in our indirect SSID IE */
1288         /* ...next IE... */
1289
1290         left -= 2;
1291         if (left < 0)
1292                 return 0;
1293         len += 2;
1294         pos = &(frame->u.probe_req.variable[0]);
1295         *pos++ = WLAN_EID_SSID;
1296         *pos++ = 0;
1297
1298         /* fill in our direct SSID IE... */
1299         if (is_direct) {
1300                 /* ...next IE... */
1301                 left -= 2 + priv->essid_len;
1302                 if (left < 0)
1303                         return 0;
1304                 /* ... fill it in... */
1305                 *pos++ = WLAN_EID_SSID;
1306                 *pos++ = priv->essid_len;
1307                 memcpy(pos, priv->essid, priv->essid_len);
1308                 pos += priv->essid_len;
1309                 len += 2 + priv->essid_len;
1310         }
1311
1312         /* fill in supported rate */
1313         /* ...next IE... */
1314         left -= 2;
1315         if (left < 0)
1316                 return 0;
1317
1318         /* ... fill it in... */
1319         *pos++ = WLAN_EID_SUPP_RATES;
1320         *pos = 0;
1321
1322         /* exclude 60M rate */
1323         active_rates = priv->rates_mask;
1324         active_rates &= ~IWL_RATE_60M_MASK;
1325
1326         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1327
1328         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1329         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1330                         active_rate_basic, &left);
1331         active_rates &= ~ret_rates;
1332
1333         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1334                                  active_rate_basic, &left);
1335         active_rates &= ~ret_rates;
1336
1337         len += 2 + *pos;
1338         pos += (*pos) + 1;
1339         if (active_rates == 0)
1340                 goto fill_end;
1341
1342         /* fill in supported extended rate */
1343         /* ...next IE... */
1344         left -= 2;
1345         if (left < 0)
1346                 return 0;
1347         /* ... fill it in... */
1348         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1349         *pos = 0;
1350         iwl4965_supported_rate_to_ie(pos, active_rates,
1351                                  active_rate_basic, &left);
1352         if (*pos > 0)
1353                 len += 2 + *pos;
1354
1355 #ifdef CONFIG_IWL4965_HT
1356         if (sband && sband->ht_info.ht_supported) {
1357                 struct ieee80211_ht_cap *ht_cap;
1358                 pos += (*pos) + 1;
1359                 *pos++ = WLAN_EID_HT_CAPABILITY;
1360                 *pos++ = sizeof(struct ieee80211_ht_cap);
1361                 ht_cap = (struct ieee80211_ht_cap *)pos;
1362                 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1363                 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1364                 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1365                                             IEEE80211_HT_CAP_AMPDU_FACTOR) |
1366                                             ((sband->ht_info.ampdu_density << 2) &
1367                                             IEEE80211_HT_CAP_AMPDU_DENSITY);
1368                 len += 2 + sizeof(struct ieee80211_ht_cap);
1369         }
1370 #endif  /*CONFIG_IWL4965_HT */
1371
1372  fill_end:
1373         return (u16)len;
1374 }
1375
1376 /*
1377  * QoS  support
1378 */
1379 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1380                                        struct iwl4965_qosparam_cmd *qos)
1381 {
1382
1383         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1384                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1385 }
1386
1387 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1388 {
1389         unsigned long flags;
1390
1391         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1392                 return;
1393
1394         if (!priv->qos_data.qos_enable)
1395                 return;
1396
1397         spin_lock_irqsave(&priv->lock, flags);
1398         priv->qos_data.def_qos_parm.qos_flags = 0;
1399
1400         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1401             !priv->qos_data.qos_cap.q_AP.txop_request)
1402                 priv->qos_data.def_qos_parm.qos_flags |=
1403                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1404         if (priv->qos_data.qos_active)
1405                 priv->qos_data.def_qos_parm.qos_flags |=
1406                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1407
1408 #ifdef CONFIG_IWL4965_HT
1409         if (priv->current_ht_config.is_ht)
1410                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1411 #endif /* CONFIG_IWL4965_HT */
1412
1413         spin_unlock_irqrestore(&priv->lock, flags);
1414
1415         if (force || iwl_is_associated(priv)) {
1416                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1417                                 priv->qos_data.qos_active,
1418                                 priv->qos_data.def_qos_parm.qos_flags);
1419
1420                 iwl4965_send_qos_params_command(priv,
1421                                 &(priv->qos_data.def_qos_parm));
1422         }
1423 }
1424
1425 /*
1426  * Power management (not Tx power!) functions
1427  */
1428 #define MSEC_TO_USEC 1024
1429
1430 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1431 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1432 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1433 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1434                                      __constant_cpu_to_le32(X1), \
1435                                      __constant_cpu_to_le32(X2), \
1436                                      __constant_cpu_to_le32(X3), \
1437                                      __constant_cpu_to_le32(X4)}
1438
1439
1440 /* default power management (not Tx power) table values */
1441 /* for tim  0-10 */
1442 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1443         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1444         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1445         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1446         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1447         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1448         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1449 };
1450
1451 /* for tim > 10 */
1452 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1453         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1454         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1455                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1456         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1457                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1458         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1459                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1460         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1461         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1462                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1463 };
1464
1465 int iwl4965_power_init_handle(struct iwl_priv *priv)
1466 {
1467         int rc = 0, i;
1468         struct iwl4965_power_mgr *pow_data;
1469         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
1470         u16 pci_pm;
1471
1472         IWL_DEBUG_POWER("Initialize power \n");
1473
1474         pow_data = &(priv->power_data);
1475
1476         memset(pow_data, 0, sizeof(*pow_data));
1477
1478         pow_data->active_index = IWL_POWER_RANGE_0;
1479         pow_data->dtim_val = 0xffff;
1480
1481         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1482         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1483
1484         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1485         if (rc != 0)
1486                 return 0;
1487         else {
1488                 struct iwl4965_powertable_cmd *cmd;
1489
1490                 IWL_DEBUG_POWER("adjust power command flags\n");
1491
1492                 for (i = 0; i < IWL_POWER_AC; i++) {
1493                         cmd = &pow_data->pwr_range_0[i].cmd;
1494
1495                         if (pci_pm & 0x1)
1496                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1497                         else
1498                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1499                 }
1500         }
1501         return rc;
1502 }
1503
1504 static int iwl4965_update_power_cmd(struct iwl_priv *priv,
1505                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
1506 {
1507         int rc = 0, i;
1508         u8 skip;
1509         u32 max_sleep = 0;
1510         struct iwl4965_power_vec_entry *range;
1511         u8 period = 0;
1512         struct iwl4965_power_mgr *pow_data;
1513
1514         if (mode > IWL_POWER_INDEX_5) {
1515                 IWL_DEBUG_POWER("Error invalid power mode \n");
1516                 return -1;
1517         }
1518         pow_data = &(priv->power_data);
1519
1520         if (pow_data->active_index == IWL_POWER_RANGE_0)
1521                 range = &pow_data->pwr_range_0[0];
1522         else
1523                 range = &pow_data->pwr_range_1[1];
1524
1525         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
1526
1527 #ifdef IWL_MAC80211_DISABLE
1528         if (priv->assoc_network != NULL) {
1529                 unsigned long flags;
1530
1531                 period = priv->assoc_network->tim.tim_period;
1532         }
1533 #endif  /*IWL_MAC80211_DISABLE */
1534         skip = range[mode].no_dtim;
1535
1536         if (period == 0) {
1537                 period = 1;
1538                 skip = 0;
1539         }
1540
1541         if (skip == 0) {
1542                 max_sleep = period;
1543                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1544         } else {
1545                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1546                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1547                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1548         }
1549
1550         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1551                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1552                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1553         }
1554
1555         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1556         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1557         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1558         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1559                         le32_to_cpu(cmd->sleep_interval[0]),
1560                         le32_to_cpu(cmd->sleep_interval[1]),
1561                         le32_to_cpu(cmd->sleep_interval[2]),
1562                         le32_to_cpu(cmd->sleep_interval[3]),
1563                         le32_to_cpu(cmd->sleep_interval[4]));
1564
1565         return rc;
1566 }
1567
1568 static int iwl4965_send_power_mode(struct iwl_priv *priv, u32 mode)
1569 {
1570         u32 uninitialized_var(final_mode);
1571         int rc;
1572         struct iwl4965_powertable_cmd cmd;
1573
1574         /* If on battery, set to 3,
1575          * if plugged into AC power, set to CAM ("continuously aware mode"),
1576          * else user level */
1577         switch (mode) {
1578         case IWL_POWER_BATTERY:
1579                 final_mode = IWL_POWER_INDEX_3;
1580                 break;
1581         case IWL_POWER_AC:
1582                 final_mode = IWL_POWER_MODE_CAM;
1583                 break;
1584         default:
1585                 final_mode = mode;
1586                 break;
1587         }
1588
1589         cmd.keep_alive_beacons = 0;
1590
1591         iwl4965_update_power_cmd(priv, &cmd, final_mode);
1592
1593         rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
1594
1595         if (final_mode == IWL_POWER_MODE_CAM)
1596                 clear_bit(STATUS_POWER_PMI, &priv->status);
1597         else
1598                 set_bit(STATUS_POWER_PMI, &priv->status);
1599
1600         return rc;
1601 }
1602
1603 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1604 {
1605         /* Filter incoming packets to determine if they are targeted toward
1606          * this network, discarding packets coming from ourselves */
1607         switch (priv->iw_mode) {
1608         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
1609                 /* packets from our adapter are dropped (echo) */
1610                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1611                         return 0;
1612                 /* {broad,multi}cast packets to our IBSS go through */
1613                 if (is_multicast_ether_addr(header->addr1))
1614                         return !compare_ether_addr(header->addr3, priv->bssid);
1615                 /* packets to our adapter go through */
1616                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1617         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1618                 /* packets from our adapter are dropped (echo) */
1619                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1620                         return 0;
1621                 /* {broad,multi}cast packets to our BSS go through */
1622                 if (is_multicast_ether_addr(header->addr1))
1623                         return !compare_ether_addr(header->addr2, priv->bssid);
1624                 /* packets to our adapter go through */
1625                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1626         default:
1627                 break;
1628         }
1629
1630         return 1;
1631 }
1632
1633 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1634
1635 static const char *iwl4965_get_tx_fail_reason(u32 status)
1636 {
1637         switch (status & TX_STATUS_MSK) {
1638         case TX_STATUS_SUCCESS:
1639                 return "SUCCESS";
1640                 TX_STATUS_ENTRY(SHORT_LIMIT);
1641                 TX_STATUS_ENTRY(LONG_LIMIT);
1642                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1643                 TX_STATUS_ENTRY(MGMNT_ABORT);
1644                 TX_STATUS_ENTRY(NEXT_FRAG);
1645                 TX_STATUS_ENTRY(LIFE_EXPIRE);
1646                 TX_STATUS_ENTRY(DEST_PS);
1647                 TX_STATUS_ENTRY(ABORTED);
1648                 TX_STATUS_ENTRY(BT_RETRY);
1649                 TX_STATUS_ENTRY(STA_INVALID);
1650                 TX_STATUS_ENTRY(FRAG_DROPPED);
1651                 TX_STATUS_ENTRY(TID_DISABLE);
1652                 TX_STATUS_ENTRY(FRAME_FLUSHED);
1653                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1654                 TX_STATUS_ENTRY(TX_LOCKED);
1655                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1656         }
1657
1658         return "UNKNOWN";
1659 }
1660
1661 /**
1662  * iwl4965_scan_cancel - Cancel any currently executing HW scan
1663  *
1664  * NOTE: priv->mutex is not required before calling this function
1665  */
1666 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1667 {
1668         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1669                 clear_bit(STATUS_SCANNING, &priv->status);
1670                 return 0;
1671         }
1672
1673         if (test_bit(STATUS_SCANNING, &priv->status)) {
1674                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1675                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1676                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1677                         queue_work(priv->workqueue, &priv->abort_scan);
1678
1679                 } else
1680                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1681
1682                 return test_bit(STATUS_SCANNING, &priv->status);
1683         }
1684
1685         return 0;
1686 }
1687
1688 /**
1689  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1690  * @ms: amount of time to wait (in milliseconds) for scan to abort
1691  *
1692  * NOTE: priv->mutex must be held before calling this function
1693  */
1694 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1695 {
1696         unsigned long now = jiffies;
1697         int ret;
1698
1699         ret = iwl4965_scan_cancel(priv);
1700         if (ret && ms) {
1701                 mutex_unlock(&priv->mutex);
1702                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1703                                 test_bit(STATUS_SCANNING, &priv->status))
1704                         msleep(1);
1705                 mutex_lock(&priv->mutex);
1706
1707                 return test_bit(STATUS_SCANNING, &priv->status);
1708         }
1709
1710         return ret;
1711 }
1712
1713 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1714 {
1715         /* Reset ieee stats */
1716
1717         /* We don't reset the net_device_stats (ieee->stats) on
1718          * re-association */
1719
1720         priv->last_seq_num = -1;
1721         priv->last_frag_num = -1;
1722         priv->last_packet_time = 0;
1723
1724         iwl4965_scan_cancel(priv);
1725 }
1726
1727 #define MAX_UCODE_BEACON_INTERVAL       4096
1728 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1729
1730 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1731 {
1732         u16 new_val = 0;
1733         u16 beacon_factor = 0;
1734
1735         beacon_factor =
1736             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1737                 / MAX_UCODE_BEACON_INTERVAL;
1738         new_val = beacon_val / beacon_factor;
1739
1740         return cpu_to_le16(new_val);
1741 }
1742
1743 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1744 {
1745         u64 interval_tm_unit;
1746         u64 tsf, result;
1747         unsigned long flags;
1748         struct ieee80211_conf *conf = NULL;
1749         u16 beacon_int = 0;
1750
1751         conf = ieee80211_get_hw_conf(priv->hw);
1752
1753         spin_lock_irqsave(&priv->lock, flags);
1754         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1755         priv->rxon_timing.timestamp.dw[0] =
1756                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1757
1758         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1759
1760         tsf = priv->timestamp;
1761
1762         beacon_int = priv->beacon_int;
1763         spin_unlock_irqrestore(&priv->lock, flags);
1764
1765         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1766                 if (beacon_int == 0) {
1767                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1768                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1769                 } else {
1770                         priv->rxon_timing.beacon_interval =
1771                                 cpu_to_le16(beacon_int);
1772                         priv->rxon_timing.beacon_interval =
1773                             iwl4965_adjust_beacon_interval(
1774                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1775                 }
1776
1777                 priv->rxon_timing.atim_window = 0;
1778         } else {
1779                 priv->rxon_timing.beacon_interval =
1780                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1781                 /* TODO: we need to get atim_window from upper stack
1782                  * for now we set to 0 */
1783                 priv->rxon_timing.atim_window = 0;
1784         }
1785
1786         interval_tm_unit =
1787                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1788         result = do_div(tsf, interval_tm_unit);
1789         priv->rxon_timing.beacon_init_val =
1790             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1791
1792         IWL_DEBUG_ASSOC
1793             ("beacon interval %d beacon timer %d beacon tim %d\n",
1794                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1795                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1796                 le16_to_cpu(priv->rxon_timing.atim_window));
1797 }
1798
1799 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1800 {
1801         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1802                 IWL_ERROR("APs don't scan.\n");
1803                 return 0;
1804         }
1805
1806         if (!iwl_is_ready_rf(priv)) {
1807                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1808                 return -EIO;
1809         }
1810
1811         if (test_bit(STATUS_SCANNING, &priv->status)) {
1812                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1813                 return -EAGAIN;
1814         }
1815
1816         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1817                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1818                                "Queuing.\n");
1819                 return -EAGAIN;
1820         }
1821
1822         IWL_DEBUG_INFO("Starting scan...\n");
1823         priv->scan_bands = 2;
1824         set_bit(STATUS_SCANNING, &priv->status);
1825         priv->scan_start = jiffies;
1826         priv->scan_pass_start = priv->scan_start;
1827
1828         queue_work(priv->workqueue, &priv->request_scan);
1829
1830         return 0;
1831 }
1832
1833
1834 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1835                                           enum ieee80211_band band)
1836 {
1837         if (band == IEEE80211_BAND_5GHZ) {
1838                 priv->staging_rxon.flags &=
1839                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1840                       | RXON_FLG_CCK_MSK);
1841                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1842         } else {
1843                 /* Copied from iwl4965_post_associate() */
1844                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1845                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1846                 else
1847                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1848
1849                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1850                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1851
1852                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1853                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1854                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1855         }
1856 }
1857
1858 /*
1859  * initialize rxon structure with default values from eeprom
1860  */
1861 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1862 {
1863         const struct iwl_channel_info *ch_info;
1864
1865         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1866
1867         switch (priv->iw_mode) {
1868         case IEEE80211_IF_TYPE_AP:
1869                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1870                 break;
1871
1872         case IEEE80211_IF_TYPE_STA:
1873                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1874                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1875                 break;
1876
1877         case IEEE80211_IF_TYPE_IBSS:
1878                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1879                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1880                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1881                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1882                 break;
1883
1884         case IEEE80211_IF_TYPE_MNTR:
1885                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1886                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1887                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1888                 break;
1889         default:
1890                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1891                 break;
1892         }
1893
1894 #if 0
1895         /* TODO:  Figure out when short_preamble would be set and cache from
1896          * that */
1897         if (!hw_to_local(priv->hw)->short_preamble)
1898                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1899         else
1900                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1901 #endif
1902
1903         ch_info = iwl_get_channel_info(priv, priv->band,
1904                                        le16_to_cpu(priv->staging_rxon.channel));
1905
1906         if (!ch_info)
1907                 ch_info = &priv->channel_info[0];
1908
1909         /*
1910          * in some case A channels are all non IBSS
1911          * in this case force B/G channel
1912          */
1913         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1914             !(is_channel_ibss(ch_info)))
1915                 ch_info = &priv->channel_info[0];
1916
1917         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1918         priv->band = ch_info->band;
1919
1920         iwl4965_set_flags_for_phymode(priv, priv->band);
1921
1922         priv->staging_rxon.ofdm_basic_rates =
1923             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1924         priv->staging_rxon.cck_basic_rates =
1925             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1926
1927         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1928                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1929         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1930         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1931         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1932         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1933         iwl4965_set_rxon_chain(priv);
1934 }
1935
1936 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1937 {
1938         if (mode == IEEE80211_IF_TYPE_IBSS) {
1939                 const struct iwl_channel_info *ch_info;
1940
1941                 ch_info = iwl_get_channel_info(priv,
1942                         priv->band,
1943                         le16_to_cpu(priv->staging_rxon.channel));
1944
1945                 if (!ch_info || !is_channel_ibss(ch_info)) {
1946                         IWL_ERROR("channel %d not IBSS channel\n",
1947                                   le16_to_cpu(priv->staging_rxon.channel));
1948                         return -EINVAL;
1949                 }
1950         }
1951
1952         priv->iw_mode = mode;
1953
1954         iwl4965_connection_init_rx_config(priv);
1955         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1956
1957         iwlcore_clear_stations_table(priv);
1958
1959         /* dont commit rxon if rf-kill is on*/
1960         if (!iwl_is_ready_rf(priv))
1961                 return -EAGAIN;
1962
1963         cancel_delayed_work(&priv->scan_check);
1964         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1965                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1966                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1967                 return -EAGAIN;
1968         }
1969
1970         iwl4965_commit_rxon(priv);
1971
1972         return 0;
1973 }
1974
1975 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1976                                       struct ieee80211_tx_control *ctl,
1977                                       struct iwl_cmd *cmd,
1978                                       struct sk_buff *skb_frag,
1979                                       int sta_id)
1980 {
1981         struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
1982         struct iwl_wep_key *wepkey;
1983         int keyidx = 0;
1984
1985         BUG_ON(ctl->key_idx > 3);
1986
1987         switch (keyinfo->alg) {
1988         case ALG_CCMP:
1989                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
1990                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
1991                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
1992                         cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
1993                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
1994                 break;
1995
1996         case ALG_TKIP:
1997                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
1998                 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
1999                         IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
2000                 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
2001                 break;
2002
2003         case ALG_WEP:
2004                 wepkey = &priv->wep_keys[ctl->key_idx];
2005                 cmd->cmd.tx.sec_ctl = 0;
2006                 if (priv->default_wep_key) {
2007                         /* the WEP key was sent as static */
2008                         keyidx = ctl->key_idx;
2009                         memcpy(&cmd->cmd.tx.key[3], wepkey->key,
2010                                                         wepkey->key_size);
2011                         if (wepkey->key_size == WEP_KEY_LEN_128)
2012                                 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2013                 } else {
2014                         /* the WEP key was sent as dynamic */
2015                         keyidx = keyinfo->keyidx;
2016                         memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
2017                                                         keyinfo->keylen);
2018                         if (keyinfo->keylen == WEP_KEY_LEN_128)
2019                                 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2020                 }
2021
2022                 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
2023                         (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
2024
2025                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2026                              "with key %d\n", keyidx);
2027                 break;
2028
2029         default:
2030                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2031                 break;
2032         }
2033 }
2034
2035 /*
2036  * handle build REPLY_TX command notification.
2037  */
2038 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
2039                                   struct iwl_cmd *cmd,
2040                                   struct ieee80211_tx_control *ctrl,
2041                                   struct ieee80211_hdr *hdr,
2042                                   int is_unicast, u8 std_id)
2043 {
2044         __le16 *qc;
2045         u16 fc = le16_to_cpu(hdr->frame_control);
2046         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2047
2048         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2049         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2050                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2051                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2052                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2053                 if (ieee80211_is_probe_response(fc) &&
2054                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2055                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2056         } else {
2057                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2058                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2059         }
2060
2061         if (ieee80211_is_back_request(fc))
2062                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2063
2064
2065         cmd->cmd.tx.sta_id = std_id;
2066         if (ieee80211_get_morefrag(hdr))
2067                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2068
2069         qc = ieee80211_get_qos_ctrl(hdr);
2070         if (qc) {
2071                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2072                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2073         } else
2074                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2075
2076         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2077                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2078                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2079         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2080                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2081                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2082         }
2083
2084         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2085                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2086
2087         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2088         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2089                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2090                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2091                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2092                 else
2093                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2094         } else {
2095                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2096         }
2097
2098         cmd->cmd.tx.driver_txop = 0;
2099         cmd->cmd.tx.tx_flags = tx_flags;
2100         cmd->cmd.tx.next_frame_len = 0;
2101 }
2102 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2103 {
2104         /* 0 - mgmt, 1 - cnt, 2 - data */
2105         int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2106         priv->tx_stats[idx].cnt++;
2107         priv->tx_stats[idx].bytes += len;
2108 }
2109 /**
2110  * iwl4965_get_sta_id - Find station's index within station table
2111  *
2112  * If new IBSS station, create new entry in station table
2113  */
2114 static int iwl4965_get_sta_id(struct iwl_priv *priv,
2115                                 struct ieee80211_hdr *hdr)
2116 {
2117         int sta_id;
2118         u16 fc = le16_to_cpu(hdr->frame_control);
2119         DECLARE_MAC_BUF(mac);
2120
2121         /* If this frame is broadcast or management, use broadcast station id */
2122         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2123             is_multicast_ether_addr(hdr->addr1))
2124                 return priv->hw_setting.bcast_sta_id;
2125
2126         switch (priv->iw_mode) {
2127
2128         /* If we are a client station in a BSS network, use the special
2129          * AP station entry (that's the only station we communicate with) */
2130         case IEEE80211_IF_TYPE_STA:
2131                 return IWL_AP_ID;
2132
2133         /* If we are an AP, then find the station, or use BCAST */
2134         case IEEE80211_IF_TYPE_AP:
2135                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2136                 if (sta_id != IWL_INVALID_STATION)
2137                         return sta_id;
2138                 return priv->hw_setting.bcast_sta_id;
2139
2140         /* If this frame is going out to an IBSS network, find the station,
2141          * or create a new station table entry */
2142         case IEEE80211_IF_TYPE_IBSS:
2143                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2144                 if (sta_id != IWL_INVALID_STATION)
2145                         return sta_id;
2146
2147                 /* Create new station table entry */
2148                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2149                                                    0, CMD_ASYNC, NULL);
2150
2151                 if (sta_id != IWL_INVALID_STATION)
2152                         return sta_id;
2153
2154                 IWL_DEBUG_DROP("Station %s not in station map. "
2155                                "Defaulting to broadcast...\n",
2156                                print_mac(mac, hdr->addr1));
2157                 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2158                 return priv->hw_setting.bcast_sta_id;
2159
2160         default:
2161                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2162                 return priv->hw_setting.bcast_sta_id;
2163         }
2164 }
2165
2166 /*
2167  * start REPLY_TX command process
2168  */
2169 static int iwl4965_tx_skb(struct iwl_priv *priv,
2170                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2171 {
2172         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2173         struct iwl4965_tfd_frame *tfd;
2174         u32 *control_flags;
2175         int txq_id = ctl->queue;
2176         struct iwl4965_tx_queue *txq = NULL;
2177         struct iwl4965_queue *q = NULL;
2178         dma_addr_t phys_addr;
2179         dma_addr_t txcmd_phys;
2180         dma_addr_t scratch_phys;
2181         struct iwl_cmd *out_cmd = NULL;
2182         u16 len, idx, len_org;
2183         u8 id, hdr_len, unicast;
2184         u8 sta_id;
2185         u16 seq_number = 0;
2186         u16 fc;
2187         __le16 *qc;
2188         u8 wait_write_ptr = 0;
2189         unsigned long flags;
2190         int rc;
2191
2192         spin_lock_irqsave(&priv->lock, flags);
2193         if (iwl_is_rfkill(priv)) {
2194                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2195                 goto drop_unlock;
2196         }
2197
2198         if (!priv->vif) {
2199                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2200                 goto drop_unlock;
2201         }
2202
2203         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2204                 IWL_ERROR("ERROR: No TX rate available.\n");
2205                 goto drop_unlock;
2206         }
2207
2208         unicast = !is_multicast_ether_addr(hdr->addr1);
2209         id = 0;
2210
2211         fc = le16_to_cpu(hdr->frame_control);
2212
2213 #ifdef CONFIG_IWLWIFI_DEBUG
2214         if (ieee80211_is_auth(fc))
2215                 IWL_DEBUG_TX("Sending AUTH frame\n");
2216         else if (ieee80211_is_assoc_request(fc))
2217                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2218         else if (ieee80211_is_reassoc_request(fc))
2219                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2220 #endif
2221
2222         /* drop all data frame if we are not associated */
2223         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2224            (!iwl_is_associated(priv) ||
2225             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2226             !priv->assoc_station_added)) {
2227                 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2228                 goto drop_unlock;
2229         }
2230
2231         spin_unlock_irqrestore(&priv->lock, flags);
2232
2233         hdr_len = ieee80211_get_hdrlen(fc);
2234
2235         /* Find (or create) index into station table for destination station */
2236         sta_id = iwl4965_get_sta_id(priv, hdr);
2237         if (sta_id == IWL_INVALID_STATION) {
2238                 DECLARE_MAC_BUF(mac);
2239
2240                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2241                                print_mac(mac, hdr->addr1));
2242                 goto drop;
2243         }
2244
2245         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2246
2247         qc = ieee80211_get_qos_ctrl(hdr);
2248         if (qc) {
2249                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2250                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2251                                 IEEE80211_SCTL_SEQ;
2252                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2253                         (hdr->seq_ctrl &
2254                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2255                 seq_number += 0x10;
2256 #ifdef CONFIG_IWL4965_HT
2257                 /* aggregation is on for this <sta,tid> */
2258                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2259                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2260                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2261 #endif /* CONFIG_IWL4965_HT */
2262         }
2263
2264         /* Descriptor for chosen Tx queue */
2265         txq = &priv->txq[txq_id];
2266         q = &txq->q;
2267
2268         spin_lock_irqsave(&priv->lock, flags);
2269
2270         /* Set up first empty TFD within this queue's circular TFD buffer */
2271         tfd = &txq->bd[q->write_ptr];
2272         memset(tfd, 0, sizeof(*tfd));
2273         control_flags = (u32 *) tfd;
2274         idx = get_cmd_index(q, q->write_ptr, 0);
2275
2276         /* Set up driver data for this TFD */
2277         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2278         txq->txb[q->write_ptr].skb[0] = skb;
2279         memcpy(&(txq->txb[q->write_ptr].status.control),
2280                ctl, sizeof(struct ieee80211_tx_control));
2281
2282         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2283         out_cmd = &txq->cmd[idx];
2284         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2285         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2286
2287         /*
2288          * Set up the Tx-command (not MAC!) header.
2289          * Store the chosen Tx queue and TFD index within the sequence field;
2290          * after Tx, uCode's Tx response will return this value so driver can
2291          * locate the frame within the tx queue and do post-tx processing.
2292          */
2293         out_cmd->hdr.cmd = REPLY_TX;
2294         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2295                                 INDEX_TO_SEQ(q->write_ptr)));
2296
2297         /* Copy MAC header from skb into command buffer */
2298         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2299
2300         /*
2301          * Use the first empty entry in this queue's command buffer array
2302          * to contain the Tx command and MAC header concatenated together
2303          * (payload data will be in another buffer).
2304          * Size of this varies, due to varying MAC header length.
2305          * If end is not dword aligned, we'll have 2 extra bytes at the end
2306          * of the MAC header (device reads on dword boundaries).
2307          * We'll tell device about this padding later.
2308          */
2309         len = priv->hw_setting.tx_cmd_len +
2310                 sizeof(struct iwl_cmd_header) + hdr_len;
2311
2312         len_org = len;
2313         len = (len + 3) & ~3;
2314
2315         if (len_org != len)
2316                 len_org = 1;
2317         else
2318                 len_org = 0;
2319
2320         /* Physical address of this Tx command's header (not MAC header!),
2321          * within command buffer array. */
2322         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2323                      offsetof(struct iwl_cmd, hdr);
2324
2325         /* Add buffer containing Tx command and MAC(!) header to TFD's
2326          * first entry */
2327         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2328
2329         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2330                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
2331
2332         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2333          * if any (802.11 null frames have no payload). */
2334         len = skb->len - hdr_len;
2335         if (len) {
2336                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2337                                            len, PCI_DMA_TODEVICE);
2338                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2339         }
2340
2341         /* Tell 4965 about any 2-byte padding after MAC header */
2342         if (len_org)
2343                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2344
2345         /* Total # bytes to be transmitted */
2346         len = (u16)skb->len;
2347         out_cmd->cmd.tx.len = cpu_to_le16(len);
2348
2349         /* TODO need this for burst mode later on */
2350         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2351
2352         /* set is_hcca to 0; it probably will never be implemented */
2353         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2354
2355         iwl_update_tx_stats(priv, fc, len);
2356
2357         scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
2358                 offsetof(struct iwl4965_tx_cmd, scratch);
2359         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2360         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2361
2362         if (!ieee80211_get_morefrag(hdr)) {
2363                 txq->need_update = 1;
2364                 if (qc) {
2365                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2366                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2367                 }
2368         } else {
2369                 wait_write_ptr = 1;
2370                 txq->need_update = 0;
2371         }
2372
2373         iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2374                            sizeof(out_cmd->cmd.tx));
2375
2376         iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2377                            ieee80211_get_hdrlen(fc));
2378
2379         /* Set up entry for this TFD in Tx byte-count array */
2380         priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
2381
2382         /* Tell device the write index *just past* this latest filled TFD */
2383         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2384         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2385         spin_unlock_irqrestore(&priv->lock, flags);
2386
2387         if (rc)
2388                 return rc;
2389
2390         if ((iwl4965_queue_space(q) < q->high_mark)
2391             && priv->mac80211_registered) {
2392                 if (wait_write_ptr) {
2393                         spin_lock_irqsave(&priv->lock, flags);
2394                         txq->need_update = 1;
2395                         iwl4965_tx_queue_update_write_ptr(priv, txq);
2396                         spin_unlock_irqrestore(&priv->lock, flags);
2397                 }
2398
2399                 ieee80211_stop_queue(priv->hw, ctl->queue);
2400         }
2401
2402         return 0;
2403
2404 drop_unlock:
2405         spin_unlock_irqrestore(&priv->lock, flags);
2406 drop:
2407         return -1;
2408 }
2409
2410 static void iwl4965_set_rate(struct iwl_priv *priv)
2411 {
2412         const struct ieee80211_supported_band *hw = NULL;
2413         struct ieee80211_rate *rate;
2414         int i;
2415
2416         hw = iwl4965_get_hw_mode(priv, priv->band);
2417         if (!hw) {
2418                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2419                 return;
2420         }
2421
2422         priv->active_rate = 0;
2423         priv->active_rate_basic = 0;
2424
2425         for (i = 0; i < hw->n_bitrates; i++) {
2426                 rate = &(hw->bitrates[i]);
2427                 if (rate->hw_value < IWL_RATE_COUNT)
2428                         priv->active_rate |= (1 << rate->hw_value);
2429         }
2430
2431         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2432                        priv->active_rate, priv->active_rate_basic);
2433
2434         /*
2435          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2436          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2437          * OFDM
2438          */
2439         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2440                 priv->staging_rxon.cck_basic_rates =
2441                     ((priv->active_rate_basic &
2442                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2443         else
2444                 priv->staging_rxon.cck_basic_rates =
2445                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2446
2447         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2448                 priv->staging_rxon.ofdm_basic_rates =
2449                     ((priv->active_rate_basic &
2450                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2451                       IWL_FIRST_OFDM_RATE) & 0xFF;
2452         else
2453                 priv->staging_rxon.ofdm_basic_rates =
2454                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2455 }
2456
2457 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2458 {
2459         unsigned long flags;
2460
2461         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2462                 return;
2463
2464         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2465                           disable_radio ? "OFF" : "ON");
2466
2467         if (disable_radio) {
2468                 iwl4965_scan_cancel(priv);
2469                 /* FIXME: This is a workaround for AP */
2470                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2471                         spin_lock_irqsave(&priv->lock, flags);
2472                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2473                                     CSR_UCODE_SW_BIT_RFKILL);
2474                         spin_unlock_irqrestore(&priv->lock, flags);
2475                         /* call the host command only if no hw rf-kill set */
2476                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2477                                 iwl4965_send_card_state(priv,
2478                                                         CARD_STATE_CMD_DISABLE,
2479                                                         0);
2480                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2481
2482                         /* make sure mac80211 stop sending Tx frame */
2483                         if (priv->mac80211_registered)
2484                                 ieee80211_stop_queues(priv->hw);
2485                 }
2486                 return;
2487         }
2488
2489         spin_lock_irqsave(&priv->lock, flags);
2490         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2491
2492         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2493         spin_unlock_irqrestore(&priv->lock, flags);
2494
2495         /* wake up ucode */
2496         msleep(10);
2497
2498         spin_lock_irqsave(&priv->lock, flags);
2499         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2500         if (!iwl_grab_nic_access(priv))
2501                 iwl_release_nic_access(priv);
2502         spin_unlock_irqrestore(&priv->lock, flags);
2503
2504         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2505                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2506                                   "disabled by HW switch\n");
2507                 return;
2508         }
2509
2510         queue_work(priv->workqueue, &priv->restart);
2511         return;
2512 }
2513
2514 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2515                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2516 {
2517         u16 fc =
2518             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2519
2520         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2521                 return;
2522
2523         if (!(fc & IEEE80211_FCTL_PROTECTED))
2524                 return;
2525
2526         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2527         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2528         case RX_RES_STATUS_SEC_TYPE_TKIP:
2529                 /* The uCode has got a bad phase 1 Key, pushes the packet.
2530                  * Decryption will be done in SW. */
2531                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2532                     RX_RES_STATUS_BAD_KEY_TTAK)
2533                         break;
2534
2535                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2536                     RX_RES_STATUS_BAD_ICV_MIC)
2537                         stats->flag |= RX_FLAG_MMIC_ERROR;
2538         case RX_RES_STATUS_SEC_TYPE_WEP:
2539         case RX_RES_STATUS_SEC_TYPE_CCMP:
2540                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2541                     RX_RES_STATUS_DECRYPT_OK) {
2542                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2543                         stats->flag |= RX_FLAG_DECRYPTED;
2544                 }
2545                 break;
2546
2547         default:
2548                 break;
2549         }
2550 }
2551
2552
2553 #define IWL_PACKET_RETRY_TIME HZ
2554
2555 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2556 {
2557         u16 sc = le16_to_cpu(header->seq_ctrl);
2558         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2559         u16 frag = sc & IEEE80211_SCTL_FRAG;
2560         u16 *last_seq, *last_frag;
2561         unsigned long *last_time;
2562
2563         switch (priv->iw_mode) {
2564         case IEEE80211_IF_TYPE_IBSS:{
2565                 struct list_head *p;
2566                 struct iwl4965_ibss_seq *entry = NULL;
2567                 u8 *mac = header->addr2;
2568                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2569
2570                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2571                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
2572                         if (!compare_ether_addr(entry->mac, mac))
2573                                 break;
2574                 }
2575                 if (p == &priv->ibss_mac_hash[index]) {
2576                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2577                         if (!entry) {
2578                                 IWL_ERROR("Cannot malloc new mac entry\n");
2579                                 return 0;
2580                         }
2581                         memcpy(entry->mac, mac, ETH_ALEN);
2582                         entry->seq_num = seq;
2583                         entry->frag_num = frag;
2584                         entry->packet_time = jiffies;
2585                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2586                         return 0;
2587                 }
2588                 last_seq = &entry->seq_num;
2589                 last_frag = &entry->frag_num;
2590                 last_time = &entry->packet_time;
2591                 break;
2592         }
2593         case IEEE80211_IF_TYPE_STA:
2594                 last_seq = &priv->last_seq_num;
2595                 last_frag = &priv->last_frag_num;
2596                 last_time = &priv->last_packet_time;
2597                 break;
2598         default:
2599                 return 0;
2600         }
2601         if ((*last_seq == seq) &&
2602             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2603                 if (*last_frag == frag)
2604                         goto drop;
2605                 if (*last_frag + 1 != frag)
2606                         /* out-of-order fragment */
2607                         goto drop;
2608         } else
2609                 *last_seq = seq;
2610
2611         *last_frag = frag;
2612         *last_time = jiffies;
2613         return 0;
2614
2615  drop:
2616         return 1;
2617 }
2618
2619 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2620
2621 #include "iwl-spectrum.h"
2622
2623 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2624 #define BEACON_TIME_MASK_HIGH   0xFF000000
2625 #define TIME_UNIT               1024
2626
2627 /*
2628  * extended beacon time format
2629  * time in usec will be changed into a 32-bit value in 8:24 format
2630  * the high 1 byte is the beacon counts
2631  * the lower 3 bytes is the time in usec within one beacon interval
2632  */
2633
2634 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2635 {
2636         u32 quot;
2637         u32 rem;
2638         u32 interval = beacon_interval * 1024;
2639
2640         if (!interval || !usec)
2641                 return 0;
2642
2643         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2644         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2645
2646         return (quot << 24) + rem;
2647 }
2648
2649 /* base is usually what we get from ucode with each received frame,
2650  * the same as HW timer counter counting down
2651  */
2652
2653 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2654 {
2655         u32 base_low = base & BEACON_TIME_MASK_LOW;
2656         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2657         u32 interval = beacon_interval * TIME_UNIT;
2658         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2659             (addon & BEACON_TIME_MASK_HIGH);
2660
2661         if (base_low > addon_low)
2662                 res += base_low - addon_low;
2663         else if (base_low < addon_low) {
2664                 res += interval + base_low - addon_low;
2665                 res += (1 << 24);
2666         } else
2667                 res += (1 << 24);
2668
2669         return cpu_to_le32(res);
2670 }
2671
2672 static int iwl4965_get_measurement(struct iwl_priv *priv,
2673                                struct ieee80211_measurement_params *params,
2674                                u8 type)
2675 {
2676         struct iwl4965_spectrum_cmd spectrum;
2677         struct iwl4965_rx_packet *res;
2678         struct iwl_host_cmd cmd = {
2679                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2680                 .data = (void *)&spectrum,
2681                 .meta.flags = CMD_WANT_SKB,
2682         };
2683         u32 add_time = le64_to_cpu(params->start_time);
2684         int rc;
2685         int spectrum_resp_status;
2686         int duration = le16_to_cpu(params->duration);
2687
2688         if (iwl_is_associated(priv))
2689                 add_time =
2690                     iwl4965_usecs_to_beacons(
2691                         le64_to_cpu(params->start_time) - priv->last_tsf,
2692                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2693
2694         memset(&spectrum, 0, sizeof(spectrum));
2695
2696         spectrum.channel_count = cpu_to_le16(1);
2697         spectrum.flags =
2698             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2699         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2700         cmd.len = sizeof(spectrum);
2701         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2702
2703         if (iwl_is_associated(priv))
2704                 spectrum.start_time =
2705                     iwl4965_add_beacon_time(priv->last_beacon_time,
2706                                 add_time,
2707                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2708         else
2709                 spectrum.start_time = 0;
2710
2711         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2712         spectrum.channels[0].channel = params->channel;
2713         spectrum.channels[0].type = type;
2714         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2715                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2716                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2717
2718         rc = iwl_send_cmd_sync(priv, &cmd);
2719         if (rc)
2720                 return rc;
2721
2722         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2723         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2724                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2725                 rc = -EIO;
2726         }
2727
2728         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2729         switch (spectrum_resp_status) {
2730         case 0:         /* Command will be handled */
2731                 if (res->u.spectrum.id != 0xff) {
2732                         IWL_DEBUG_INFO
2733                             ("Replaced existing measurement: %d\n",
2734                              res->u.spectrum.id);
2735                         priv->measurement_status &= ~MEASUREMENT_READY;
2736                 }
2737                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2738                 rc = 0;
2739                 break;
2740
2741         case 1:         /* Command will not be handled */
2742                 rc = -EAGAIN;
2743                 break;
2744         }
2745
2746         dev_kfree_skb_any(cmd.meta.u.skb);
2747
2748         return rc;
2749 }
2750 #endif
2751
2752 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2753                                  struct iwl4965_tx_info *tx_sta)
2754 {
2755
2756         tx_sta->status.ack_signal = 0;
2757         tx_sta->status.excessive_retries = 0;
2758         tx_sta->status.queue_length = 0;
2759         tx_sta->status.queue_number = 0;
2760
2761         if (in_interrupt())
2762                 ieee80211_tx_status_irqsafe(priv->hw,
2763                                             tx_sta->skb[0], &(tx_sta->status));
2764         else
2765                 ieee80211_tx_status(priv->hw,
2766                                     tx_sta->skb[0], &(tx_sta->status));
2767
2768         tx_sta->skb[0] = NULL;
2769 }
2770
2771 /**
2772  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2773  *
2774  * When FW advances 'R' index, all entries between old and new 'R' index
2775  * need to be reclaimed. As result, some free space forms.  If there is
2776  * enough free space (> low mark), wake the stack that feeds us.
2777  */
2778 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2779 {
2780         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2781         struct iwl4965_queue *q = &txq->q;
2782         int nfreed = 0;
2783
2784         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2785                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2786                           "is out of range [0-%d] %d %d.\n", txq_id,
2787                           index, q->n_bd, q->write_ptr, q->read_ptr);
2788                 return 0;
2789         }
2790
2791         for (index = iwl_queue_inc_wrap(index, q->n_bd);
2792                 q->read_ptr != index;
2793                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2794                 if (txq_id != IWL_CMD_QUEUE_NUM) {
2795                         iwl4965_txstatus_to_ieee(priv,
2796                                         &(txq->txb[txq->q.read_ptr]));
2797                         iwl4965_hw_txq_free_tfd(priv, txq);
2798                 } else if (nfreed > 1) {
2799                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2800                                         q->write_ptr, q->read_ptr);
2801                         queue_work(priv->workqueue, &priv->restart);
2802                 }
2803                 nfreed++;
2804         }
2805
2806 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2807                         (txq_id != IWL_CMD_QUEUE_NUM) &&
2808                         priv->mac80211_registered)
2809                 ieee80211_wake_queue(priv->hw, txq_id); */
2810
2811
2812         return nfreed;
2813 }
2814
2815 static int iwl4965_is_tx_success(u32 status)
2816 {
2817         status &= TX_STATUS_MSK;
2818         return (status == TX_STATUS_SUCCESS)
2819             || (status == TX_STATUS_DIRECT_DONE);
2820 }
2821
2822 /******************************************************************************
2823  *
2824  * Generic RX handler implementations
2825  *
2826  ******************************************************************************/
2827 #ifdef CONFIG_IWL4965_HT
2828
2829 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2830                                     struct ieee80211_hdr *hdr)
2831 {
2832         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2833                 return IWL_AP_ID;
2834         else {
2835                 u8 *da = ieee80211_get_DA(hdr);
2836                 return iwl4965_hw_find_station(priv, da);
2837         }
2838 }
2839
2840 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2841         struct iwl_priv *priv, int txq_id, int idx)
2842 {
2843         if (priv->txq[txq_id].txb[idx].skb[0])
2844                 return (struct ieee80211_hdr *)priv->txq[txq_id].
2845                                 txb[idx].skb[0]->data;
2846         return NULL;
2847 }
2848
2849 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2850 {
2851         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2852                                 tx_resp->frame_count);
2853         return le32_to_cpu(*scd_ssn) & MAX_SN;
2854
2855 }
2856
2857 /**
2858  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2859  */
2860 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2861                                       struct iwl4965_ht_agg *agg,
2862                                       struct iwl4965_tx_resp_agg *tx_resp,
2863                                       u16 start_idx)
2864 {
2865         u16 status;
2866         struct agg_tx_status *frame_status = &tx_resp->status;
2867         struct ieee80211_tx_status *tx_status = NULL;
2868         struct ieee80211_hdr *hdr = NULL;
2869         int i, sh;
2870         int txq_id, idx;
2871         u16 seq;
2872
2873         if (agg->wait_for_ba)
2874                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
2875
2876         agg->frame_count = tx_resp->frame_count;
2877         agg->start_idx = start_idx;
2878         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2879         agg->bitmap = 0;
2880
2881         /* # frames attempted by Tx command */
2882         if (agg->frame_count == 1) {
2883                 /* Only one frame was attempted; no block-ack will arrive */
2884                 status = le16_to_cpu(frame_status[0].status);
2885                 seq  = le16_to_cpu(frame_status[0].sequence);
2886                 idx = SEQ_TO_INDEX(seq);
2887                 txq_id = SEQ_TO_QUEUE(seq);
2888
2889                 /* FIXME: code repetition */
2890                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
2891                                    agg->frame_count, agg->start_idx, idx);
2892
2893                 tx_status = &(priv->txq[txq_id].txb[idx].status);
2894                 tx_status->retry_count = tx_resp->failure_frame;
2895                 tx_status->queue_number = status & 0xff;
2896                 tx_status->queue_length = tx_resp->failure_rts;
2897                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
2898                 tx_status->flags = iwl4965_is_tx_success(status)?
2899                         IEEE80211_TX_STATUS_ACK : 0;
2900                 iwl4965_hwrate_to_tx_control(priv,
2901                                              le32_to_cpu(tx_resp->rate_n_flags),
2902                                              &tx_status->control);
2903                 /* FIXME: code repetition end */
2904
2905                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
2906                                     status & 0xff, tx_resp->failure_frame);
2907                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
2908                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
2909
2910                 agg->wait_for_ba = 0;
2911         } else {
2912                 /* Two or more frames were attempted; expect block-ack */
2913                 u64 bitmap = 0;
2914                 int start = agg->start_idx;
2915
2916                 /* Construct bit-map of pending frames within Tx window */
2917                 for (i = 0; i < agg->frame_count; i++) {
2918                         u16 sc;
2919                         status = le16_to_cpu(frame_status[i].status);
2920                         seq  = le16_to_cpu(frame_status[i].sequence);
2921                         idx = SEQ_TO_INDEX(seq);
2922                         txq_id = SEQ_TO_QUEUE(seq);
2923
2924                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
2925                                       AGG_TX_STATE_ABORT_MSK))
2926                                 continue;
2927
2928                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
2929                                            agg->frame_count, txq_id, idx);
2930
2931                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
2932
2933                         sc = le16_to_cpu(hdr->seq_ctrl);
2934                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
2935                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
2936                                           " idx=%d, seq_idx=%d, seq=%d\n",
2937                                           idx, SEQ_TO_SN(sc),
2938                                           hdr->seq_ctrl);
2939                                 return -1;
2940                         }
2941
2942                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
2943                                            i, idx, SEQ_TO_SN(sc));
2944
2945                         sh = idx - start;
2946                         if (sh > 64) {
2947                                 sh = (start - idx) + 0xff;
2948                                 bitmap = bitmap << sh;
2949                                 sh = 0;
2950                                 start = idx;
2951                         } else if (sh < -64)
2952                                 sh  = 0xff - (start - idx);
2953                         else if (sh < 0) {
2954                                 sh = start - idx;
2955                                 start = idx;
2956                                 bitmap = bitmap << sh;
2957                                 sh = 0;
2958                         }
2959                         bitmap |= (1 << sh);
2960                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
2961                                            start, (u32)(bitmap & 0xFFFFFFFF));
2962                 }
2963
2964                 agg->bitmap = bitmap;
2965                 agg->start_idx = start;
2966                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
2967                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
2968                                    agg->frame_count, agg->start_idx,
2969                                    (unsigned long long)agg->bitmap);
2970
2971                 if (bitmap)
2972                         agg->wait_for_ba = 1;
2973         }
2974         return 0;
2975 }
2976 #endif
2977
2978 /**
2979  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2980  */
2981 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2982                             struct iwl4965_rx_mem_buffer *rxb)
2983 {
2984         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
2985         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2986         int txq_id = SEQ_TO_QUEUE(sequence);
2987         int index = SEQ_TO_INDEX(sequence);
2988         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2989         struct ieee80211_tx_status *tx_status;
2990         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2991         u32  status = le32_to_cpu(tx_resp->status);
2992 #ifdef CONFIG_IWL4965_HT
2993         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
2994         struct ieee80211_hdr *hdr;
2995         __le16 *qc;
2996 #endif
2997
2998         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
2999                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3000                           "is out of range [0-%d] %d %d\n", txq_id,
3001                           index, txq->q.n_bd, txq->q.write_ptr,
3002                           txq->q.read_ptr);
3003                 return;
3004         }
3005
3006 #ifdef CONFIG_IWL4965_HT
3007         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3008         qc = ieee80211_get_qos_ctrl(hdr);
3009
3010         if (qc)
3011                 tid = le16_to_cpu(*qc) & 0xf;
3012
3013         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3014         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3015                 IWL_ERROR("Station not known\n");
3016                 return;
3017         }
3018
3019         if (txq->sched_retry) {
3020                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3021                 struct iwl4965_ht_agg *agg = NULL;
3022
3023                 if (!qc)
3024                         return;
3025
3026                 agg = &priv->stations[sta_id].tid[tid].agg;
3027
3028                 iwl4965_tx_status_reply_tx(priv, agg,
3029                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3030
3031                 if ((tx_resp->frame_count == 1) &&
3032                     !iwl4965_is_tx_success(status)) {
3033                         /* TODO: send BAR */
3034                 }
3035
3036                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3037                         int freed;
3038                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3039                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3040                                            "%d index %d\n", scd_ssn , index);
3041                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3042                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3043
3044                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3045                             txq_id >= 0 && priv->mac80211_registered &&
3046                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3047                                 ieee80211_wake_queue(priv->hw, txq_id);
3048
3049                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3050                 }
3051         } else {
3052 #endif /* CONFIG_IWL4965_HT */
3053         tx_status = &(txq->txb[txq->q.read_ptr].status);
3054
3055         tx_status->retry_count = tx_resp->failure_frame;
3056         tx_status->queue_number = status;
3057         tx_status->queue_length = tx_resp->bt_kill_count;
3058         tx_status->queue_length |= tx_resp->failure_rts;
3059         tx_status->flags =
3060             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3061         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3062                                      &tx_status->control);
3063
3064         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3065                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3066                      status, le32_to_cpu(tx_resp->rate_n_flags),
3067                      tx_resp->failure_frame);
3068
3069         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3070         if (index != -1) {
3071                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3072 #ifdef CONFIG_IWL4965_HT
3073                 if (tid != MAX_TID_COUNT)
3074                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3075                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3076                         (txq_id >= 0) &&
3077                         priv->mac80211_registered)
3078                         ieee80211_wake_queue(priv->hw, txq_id);
3079                 if (tid != MAX_TID_COUNT)
3080                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3081 #endif
3082         }
3083 #ifdef CONFIG_IWL4965_HT
3084         }
3085 #endif /* CONFIG_IWL4965_HT */
3086
3087         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3088                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3089 }
3090
3091
3092 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3093                                struct iwl4965_rx_mem_buffer *rxb)
3094 {
3095         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3096         struct iwl4965_alive_resp *palive;
3097         struct delayed_work *pwork;
3098
3099         palive = &pkt->u.alive_frame;
3100
3101         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3102                        "0x%01X 0x%01X\n",
3103                        palive->is_valid, palive->ver_type,
3104                        palive->ver_subtype);
3105
3106         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3107                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3108                 memcpy(&priv->card_alive_init,
3109                        &pkt->u.alive_frame,
3110                        sizeof(struct iwl4965_init_alive_resp));
3111                 pwork = &priv->init_alive_start;
3112         } else {
3113                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3114                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3115                        sizeof(struct iwl4965_alive_resp));
3116                 pwork = &priv->alive_start;
3117         }
3118
3119         /* We delay the ALIVE response by 5ms to
3120          * give the HW RF Kill time to activate... */
3121         if (palive->is_valid == UCODE_VALID_OK)
3122                 queue_delayed_work(priv->workqueue, pwork,
3123                                    msecs_to_jiffies(5));
3124         else
3125                 IWL_WARNING("uCode did not respond OK.\n");
3126 }
3127
3128 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3129                                  struct iwl4965_rx_mem_buffer *rxb)
3130 {
3131         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3132
3133         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3134         return;
3135 }
3136
3137 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3138                                struct iwl4965_rx_mem_buffer *rxb)
3139 {
3140         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3141
3142         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3143                 "seq 0x%04X ser 0x%08X\n",
3144                 le32_to_cpu(pkt->u.err_resp.error_type),
3145                 get_cmd_string(pkt->u.err_resp.cmd_id),
3146                 pkt->u.err_resp.cmd_id,
3147                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3148                 le32_to_cpu(pkt->u.err_resp.error_info));
3149 }
3150
3151 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3152
3153 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3154 {
3155         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3156         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3157         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3158         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3159                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3160         rxon->channel = csa->channel;
3161         priv->staging_rxon.channel = csa->channel;
3162 }
3163
3164 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3165                                           struct iwl4965_rx_mem_buffer *rxb)
3166 {
3167 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3168         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3169         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3170
3171         if (!report->state) {
3172                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3173                           "Spectrum Measure Notification: Start\n");
3174                 return;
3175         }
3176
3177         memcpy(&priv->measure_report, report, sizeof(*report));
3178         priv->measurement_status |= MEASUREMENT_READY;
3179 #endif
3180 }
3181
3182 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3183                                   struct iwl4965_rx_mem_buffer *rxb)
3184 {
3185 #ifdef CONFIG_IWLWIFI_DEBUG
3186         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3187         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3188         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3189                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3190 #endif
3191 }
3192
3193 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3194                                              struct iwl4965_rx_mem_buffer *rxb)
3195 {
3196         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3197         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3198                         "notification for %s:\n",
3199                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3200         iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3201 }
3202
3203 static void iwl4965_bg_beacon_update(struct work_struct *work)
3204 {
3205         struct iwl_priv *priv =
3206                 container_of(work, struct iwl_priv, beacon_update);
3207         struct sk_buff *beacon;
3208
3209         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3210         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3211
3212         if (!beacon) {
3213                 IWL_ERROR("update beacon failed\n");
3214                 return;
3215         }
3216
3217         mutex_lock(&priv->mutex);
3218         /* new beacon skb is allocated every time; dispose previous.*/
3219         if (priv->ibss_beacon)
3220                 dev_kfree_skb(priv->ibss_beacon);
3221
3222         priv->ibss_beacon = beacon;
3223         mutex_unlock(&priv->mutex);
3224
3225         iwl4965_send_beacon_cmd(priv);
3226 }
3227
3228 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3229                                 struct iwl4965_rx_mem_buffer *rxb)
3230 {
3231 #ifdef CONFIG_IWLWIFI_DEBUG
3232         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3233         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3234         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3235
3236         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3237                 "tsf %d %d rate %d\n",
3238                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3239                 beacon->beacon_notify_hdr.failure_frame,
3240                 le32_to_cpu(beacon->ibss_mgr_status),
3241                 le32_to_cpu(beacon->high_tsf),
3242                 le32_to_cpu(beacon->low_tsf), rate);
3243 #endif
3244
3245         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3246             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3247                 queue_work(priv->workqueue, &priv->beacon_update);
3248 }
3249
3250 /* Service response to REPLY_SCAN_CMD (0x80) */
3251 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3252                               struct iwl4965_rx_mem_buffer *rxb)
3253 {
3254 #ifdef CONFIG_IWLWIFI_DEBUG
3255         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3256         struct iwl4965_scanreq_notification *notif =
3257             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3258
3259         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3260 #endif
3261 }
3262
3263 /* Service SCAN_START_NOTIFICATION (0x82) */
3264 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3265                                     struct iwl4965_rx_mem_buffer *rxb)
3266 {
3267         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3268         struct iwl4965_scanstart_notification *notif =
3269             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3270         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3271         IWL_DEBUG_SCAN("Scan start: "
3272                        "%d [802.11%s] "
3273                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3274                        notif->channel,
3275                        notif->band ? "bg" : "a",
3276                        notif->tsf_high,
3277                        notif->tsf_low, notif->status, notif->beacon_timer);
3278 }
3279
3280 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3281 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3282                                       struct iwl4965_rx_mem_buffer *rxb)
3283 {
3284         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3285         struct iwl4965_scanresults_notification *notif =
3286             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3287
3288         IWL_DEBUG_SCAN("Scan ch.res: "
3289                        "%d [802.11%s] "
3290                        "(TSF: 0x%08X:%08X) - %d "
3291                        "elapsed=%lu usec (%dms since last)\n",
3292                        notif->channel,
3293                        notif->band ? "bg" : "a",
3294                        le32_to_cpu(notif->tsf_high),
3295                        le32_to_cpu(notif->tsf_low),
3296                        le32_to_cpu(notif->statistics[0]),
3297                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3298                        jiffies_to_msecs(elapsed_jiffies
3299                                         (priv->last_scan_jiffies, jiffies)));
3300
3301         priv->last_scan_jiffies = jiffies;
3302         priv->next_scan_jiffies = 0;
3303 }
3304
3305 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3306 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3307                                        struct iwl4965_rx_mem_buffer *rxb)
3308 {
3309         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3310         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3311
3312         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3313                        scan_notif->scanned_channels,
3314                        scan_notif->tsf_low,
3315                        scan_notif->tsf_high, scan_notif->status);
3316
3317         /* The HW is no longer scanning */
3318         clear_bit(STATUS_SCAN_HW, &priv->status);
3319
3320         /* The scan completion notification came in, so kill that timer... */
3321         cancel_delayed_work(&priv->scan_check);
3322
3323         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3324                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3325                        jiffies_to_msecs(elapsed_jiffies
3326                                         (priv->scan_pass_start, jiffies)));
3327
3328         /* Remove this scanned band from the list
3329          * of pending bands to scan */
3330         priv->scan_bands--;
3331
3332         /* If a request to abort was given, or the scan did not succeed
3333          * then we reset the scan state machine and terminate,
3334          * re-queuing another scan if one has been requested */
3335         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3336                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3337                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3338         } else {
3339                 /* If there are more bands on this scan pass reschedule */
3340                 if (priv->scan_bands > 0)
3341                         goto reschedule;
3342         }
3343
3344         priv->last_scan_jiffies = jiffies;
3345         priv->next_scan_jiffies = 0;
3346         IWL_DEBUG_INFO("Setting scan to off\n");
3347
3348         clear_bit(STATUS_SCANNING, &priv->status);
3349
3350         IWL_DEBUG_INFO("Scan took %dms\n",
3351                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3352
3353         queue_work(priv->workqueue, &priv->scan_completed);
3354
3355         return;
3356
3357 reschedule:
3358         priv->scan_pass_start = jiffies;
3359         queue_work(priv->workqueue, &priv->request_scan);
3360 }
3361
3362 /* Handle notification from uCode that card's power state is changing
3363  * due to software, hardware, or critical temperature RFKILL */
3364 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3365                                     struct iwl4965_rx_mem_buffer *rxb)
3366 {
3367         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3368         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3369         unsigned long status = priv->status;
3370
3371         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3372                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3373                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3374
3375         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3376                      RF_CARD_DISABLED)) {
3377
3378                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3379                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3380
3381                 if (!iwl_grab_nic_access(priv)) {
3382                         iwl_write_direct32(
3383                                 priv, HBUS_TARG_MBX_C,
3384                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3385
3386                         iwl_release_nic_access(priv);
3387                 }
3388
3389                 if (!(flags & RXON_CARD_DISABLED)) {
3390                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3391                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3392                         if (!iwl_grab_nic_access(priv)) {
3393                                 iwl_write_direct32(
3394                                         priv, HBUS_TARG_MBX_C,
3395                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3396
3397                                 iwl_release_nic_access(priv);
3398                         }
3399                 }
3400
3401                 if (flags & RF_CARD_DISABLED) {
3402                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3403                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3404                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
3405                         if (!iwl_grab_nic_access(priv))
3406                                 iwl_release_nic_access(priv);
3407                 }
3408         }
3409
3410         if (flags & HW_CARD_DISABLED)
3411                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3412         else
3413                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3414
3415
3416         if (flags & SW_CARD_DISABLED)
3417                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3418         else
3419                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3420
3421         if (!(flags & RXON_CARD_DISABLED))
3422                 iwl4965_scan_cancel(priv);
3423
3424         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3425              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3426             (test_bit(STATUS_RF_KILL_SW, &status) !=
3427              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3428                 queue_work(priv->workqueue, &priv->rf_kill);
3429         else
3430                 wake_up_interruptible(&priv->wait_command_queue);
3431 }
3432
3433 /**
3434  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3435  *
3436  * Setup the RX handlers for each of the reply types sent from the uCode
3437  * to the host.
3438  *
3439  * This function chains into the hardware specific files for them to setup
3440  * any hardware specific handlers as well.
3441  */
3442 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3443 {
3444         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3445         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3446         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3447         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3448         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3449             iwl4965_rx_spectrum_measure_notif;
3450         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3451         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3452             iwl4965_rx_pm_debug_statistics_notif;
3453         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3454
3455         /*
3456          * The same handler is used for both the REPLY to a discrete
3457          * statistics request from the host as well as for the periodic
3458          * statistics notifications (after received beacons) from the uCode.
3459          */
3460         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3461         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3462
3463         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3464         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3465         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3466             iwl4965_rx_scan_results_notif;
3467         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3468             iwl4965_rx_scan_complete_notif;
3469         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3470         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3471
3472         /* Set up hardware specific Rx handlers */
3473         iwl4965_hw_rx_handler_setup(priv);
3474 }
3475
3476 /**
3477  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3478  * @rxb: Rx buffer to reclaim
3479  *
3480  * If an Rx buffer has an async callback associated with it the callback
3481  * will be executed.  The attached skb (if present) will only be freed
3482  * if the callback returns 1
3483  */
3484 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3485                                 struct iwl4965_rx_mem_buffer *rxb)
3486 {
3487         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3488         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3489         int txq_id = SEQ_TO_QUEUE(sequence);
3490         int index = SEQ_TO_INDEX(sequence);
3491         int huge = sequence & SEQ_HUGE_FRAME;
3492         int cmd_index;
3493         struct iwl_cmd *cmd;
3494
3495         /* If a Tx command is being handled and it isn't in the actual
3496          * command queue then there a command routing bug has been introduced
3497          * in the queue management code. */
3498         if (txq_id != IWL_CMD_QUEUE_NUM)
3499                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3500                           txq_id, pkt->hdr.cmd);
3501         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3502
3503         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3504         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3505
3506         /* Input error checking is done when commands are added to queue. */
3507         if (cmd->meta.flags & CMD_WANT_SKB) {
3508                 cmd->meta.source->u.skb = rxb->skb;
3509                 rxb->skb = NULL;
3510         } else if (cmd->meta.u.callback &&
3511                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3512                 rxb->skb = NULL;
3513
3514         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3515
3516         if (!(cmd->meta.flags & CMD_ASYNC)) {
3517                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3518                 wake_up_interruptible(&priv->wait_command_queue);
3519         }
3520 }
3521
3522 /************************** RX-FUNCTIONS ****************************/
3523 /*
3524  * Rx theory of operation
3525  *
3526  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3527  * each of which point to Receive Buffers to be filled by 4965.  These get
3528  * used not only for Rx frames, but for any command response or notification
3529  * from the 4965.  The driver and 4965 manage the Rx buffers by means
3530  * of indexes into the circular buffer.
3531  *
3532  * Rx Queue Indexes
3533  * The host/firmware share two index registers for managing the Rx buffers.
3534  *
3535  * The READ index maps to the first position that the firmware may be writing
3536  * to -- the driver can read up to (but not including) this position and get
3537  * good data.
3538  * The READ index is managed by the firmware once the card is enabled.
3539  *
3540  * The WRITE index maps to the last position the driver has read from -- the
3541  * position preceding WRITE is the last slot the firmware can place a packet.
3542  *
3543  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3544  * WRITE = READ.
3545  *
3546  * During initialization, the host sets up the READ queue position to the first
3547  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3548  *
3549  * When the firmware places a packet in a buffer, it will advance the READ index
3550  * and fire the RX interrupt.  The driver can then query the READ index and
3551  * process as many packets as possible, moving the WRITE index forward as it
3552  * resets the Rx queue buffers with new memory.
3553  *
3554  * The management in the driver is as follows:
3555  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3556  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3557  *   to replenish the iwl->rxq->rx_free.
3558  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3559  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3560  *   'processed' and 'read' driver indexes as well)
3561  * + A received packet is processed and handed to the kernel network stack,
3562  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3563  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3564  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3565  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3566  *   were enough free buffers and RX_STALLED is set it is cleared.
3567  *
3568  *
3569  * Driver sequence:
3570  *
3571  * iwl4965_rx_queue_alloc()   Allocates rx_free
3572  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3573  *                            iwl4965_rx_queue_restock
3574  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3575  *                            queue, updates firmware pointers, and updates
3576  *                            the WRITE index.  If insufficient rx_free buffers
3577  *                            are available, schedules iwl4965_rx_replenish
3578  *
3579  * -- enable interrupts --
3580  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
3581  *                            READ INDEX, detaching the SKB from the pool.
3582  *                            Moves the packet buffer from queue to rx_used.
3583  *                            Calls iwl4965_rx_queue_restock to refill any empty
3584  *                            slots.
3585  * ...
3586  *
3587  */
3588
3589 /**
3590  * iwl4965_rx_queue_space - Return number of free slots available in queue.
3591  */
3592 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3593 {
3594         int s = q->read - q->write;
3595         if (s <= 0)
3596                 s += RX_QUEUE_SIZE;
3597         /* keep some buffer to not confuse full and empty queue */
3598         s -= 2;
3599         if (s < 0)
3600                 s = 0;
3601         return s;
3602 }
3603
3604 /**
3605  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3606  */
3607 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3608 {
3609         u32 reg = 0;
3610         int rc = 0;
3611         unsigned long flags;
3612
3613         spin_lock_irqsave(&q->lock, flags);
3614
3615         if (q->need_update == 0)
3616                 goto exit_unlock;
3617
3618         /* If power-saving is in use, make sure device is awake */
3619         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3620                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3621
3622                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3623                         iwl_set_bit(priv, CSR_GP_CNTRL,
3624                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3625                         goto exit_unlock;
3626                 }
3627
3628                 rc = iwl_grab_nic_access(priv);
3629                 if (rc)
3630                         goto exit_unlock;
3631
3632                 /* Device expects a multiple of 8 */
3633                 iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3634                                      q->write & ~0x7);
3635                 iwl_release_nic_access(priv);
3636
3637         /* Else device is assumed to be awake */
3638         } else
3639                 /* Device expects a multiple of 8 */
3640                 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3641
3642
3643         q->need_update = 0;
3644
3645  exit_unlock:
3646         spin_unlock_irqrestore(&q->lock, flags);
3647         return rc;
3648 }
3649
3650 /**
3651  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3652  */
3653 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3654                                           dma_addr_t dma_addr)
3655 {
3656         return cpu_to_le32((u32)(dma_addr >> 8));
3657 }
3658
3659
3660 /**
3661  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3662  *
3663  * If there are slots in the RX queue that need to be restocked,
3664  * and we have free pre-allocated buffers, fill the ranks as much
3665  * as we can, pulling from rx_free.
3666  *
3667  * This moves the 'write' index forward to catch up with 'processed', and
3668  * also updates the memory address in the firmware to reference the new
3669  * target buffer.
3670  */
3671 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3672 {
3673         struct iwl4965_rx_queue *rxq = &priv->rxq;
3674         struct list_head *element;
3675         struct iwl4965_rx_mem_buffer *rxb;
3676         unsigned long flags;
3677         int write, rc;
3678
3679         spin_lock_irqsave(&rxq->lock, flags);
3680         write = rxq->write & ~0x7;
3681         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3682                 /* Get next free Rx buffer, remove from free list */
3683                 element = rxq->rx_free.next;
3684                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3685                 list_del(element);
3686
3687                 /* Point to Rx buffer via next RBD in circular buffer */
3688                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3689                 rxq->queue[rxq->write] = rxb;
3690                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3691                 rxq->free_count--;
3692         }
3693         spin_unlock_irqrestore(&rxq->lock, flags);
3694         /* If the pre-allocated buffer pool is dropping low, schedule to
3695          * refill it */
3696         if (rxq->free_count <= RX_LOW_WATERMARK)
3697                 queue_work(priv->workqueue, &priv->rx_replenish);
3698
3699
3700         /* If we've added more space for the firmware to place data, tell it.
3701          * Increment device's write pointer in multiples of 8. */
3702         if ((write != (rxq->write & ~0x7))
3703             || (abs(rxq->write - rxq->read) > 7)) {
3704                 spin_lock_irqsave(&rxq->lock, flags);
3705                 rxq->need_update = 1;
3706                 spin_unlock_irqrestore(&rxq->lock, flags);
3707                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3708                 if (rc)
3709                         return rc;
3710         }
3711
3712         return 0;
3713 }
3714
3715 /**
3716  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3717  *
3718  * When moving to rx_free an SKB is allocated for the slot.
3719  *
3720  * Also restock the Rx queue via iwl4965_rx_queue_restock.
3721  * This is called as a scheduled work item (except for during initialization)
3722  */
3723 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3724 {
3725         struct iwl4965_rx_queue *rxq = &priv->rxq;
3726         struct list_head *element;
3727         struct iwl4965_rx_mem_buffer *rxb;
3728         unsigned long flags;
3729         spin_lock_irqsave(&rxq->lock, flags);
3730         while (!list_empty(&rxq->rx_used)) {
3731                 element = rxq->rx_used.next;
3732                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3733
3734                 /* Alloc a new receive buffer */
3735                 rxb->skb =
3736                     alloc_skb(priv->hw_setting.rx_buf_size,
3737                                 __GFP_NOWARN | GFP_ATOMIC);
3738                 if (!rxb->skb) {
3739                         if (net_ratelimit())
3740                                 printk(KERN_CRIT DRV_NAME
3741                                        ": Can not allocate SKB buffers\n");
3742                         /* We don't reschedule replenish work here -- we will
3743                          * call the restock method and if it still needs
3744                          * more buffers it will schedule replenish */
3745                         break;
3746                 }
3747                 priv->alloc_rxb_skb++;
3748                 list_del(element);
3749
3750                 /* Get physical address of RB/SKB */
3751                 rxb->dma_addr =
3752                     pci_map_single(priv->pci_dev, rxb->skb->data,
3753                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
3754                 list_add_tail(&rxb->list, &rxq->rx_free);
3755                 rxq->free_count++;
3756         }
3757         spin_unlock_irqrestore(&rxq->lock, flags);
3758 }
3759
3760 /*
3761  * this should be called while priv->lock is locked
3762 */
3763 static void __iwl4965_rx_replenish(void *data)
3764 {
3765         struct iwl_priv *priv = data;
3766
3767         iwl4965_rx_allocate(priv);
3768         iwl4965_rx_queue_restock(priv);
3769 }
3770
3771
3772 void iwl4965_rx_replenish(void *data)
3773 {
3774         struct iwl_priv *priv = data;
3775         unsigned long flags;
3776
3777         iwl4965_rx_allocate(priv);
3778
3779         spin_lock_irqsave(&priv->lock, flags);
3780         iwl4965_rx_queue_restock(priv);
3781         spin_unlock_irqrestore(&priv->lock, flags);
3782 }
3783
3784 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3785  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3786  * This free routine walks the list of POOL entries and if SKB is set to
3787  * non NULL it is unmapped and freed
3788  */
3789 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3790 {
3791         int i;
3792         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3793                 if (rxq->pool[i].skb != NULL) {
3794                         pci_unmap_single(priv->pci_dev,
3795                                          rxq->pool[i].dma_addr,
3796                                          priv->hw_setting.rx_buf_size,
3797                                          PCI_DMA_FROMDEVICE);
3798                         dev_kfree_skb(rxq->pool[i].skb);
3799                 }
3800         }
3801
3802         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3803                             rxq->dma_addr);
3804         rxq->bd = NULL;
3805 }
3806
3807 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3808 {
3809         struct iwl4965_rx_queue *rxq = &priv->rxq;
3810         struct pci_dev *dev = priv->pci_dev;
3811         int i;
3812
3813         spin_lock_init(&rxq->lock);
3814         INIT_LIST_HEAD(&rxq->rx_free);
3815         INIT_LIST_HEAD(&rxq->rx_used);
3816
3817         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3818         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3819         if (!rxq->bd)
3820                 return -ENOMEM;
3821
3822         /* Fill the rx_used queue with _all_ of the Rx buffers */
3823         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3824                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3825
3826         /* Set us so that we have processed and used all buffers, but have
3827          * not restocked the Rx queue with fresh buffers */
3828         rxq->read = rxq->write = 0;
3829         rxq->free_count = 0;
3830         rxq->need_update = 0;
3831         return 0;
3832 }
3833
3834 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3835 {
3836         unsigned long flags;
3837         int i;
3838         spin_lock_irqsave(&rxq->lock, flags);
3839         INIT_LIST_HEAD(&rxq->rx_free);
3840         INIT_LIST_HEAD(&rxq->rx_used);
3841         /* Fill the rx_used queue with _all_ of the Rx buffers */
3842         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3843                 /* In the reset function, these buffers may have been allocated
3844                  * to an SKB, so we need to unmap and free potential storage */
3845                 if (rxq->pool[i].skb != NULL) {
3846                         pci_unmap_single(priv->pci_dev,
3847                                          rxq->pool[i].dma_addr,
3848                                          priv->hw_setting.rx_buf_size,
3849                                          PCI_DMA_FROMDEVICE);
3850                         priv->alloc_rxb_skb--;
3851                         dev_kfree_skb(rxq->pool[i].skb);
3852                         rxq->pool[i].skb = NULL;
3853                 }
3854                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3855         }
3856
3857         /* Set us so that we have processed and used all buffers, but have
3858          * not restocked the Rx queue with fresh buffers */
3859         rxq->read = rxq->write = 0;
3860         rxq->free_count = 0;
3861         spin_unlock_irqrestore(&rxq->lock, flags);
3862 }
3863
3864 /* Convert linear signal-to-noise ratio into dB */
3865 static u8 ratio2dB[100] = {
3866 /*       0   1   2   3   4   5   6   7   8   9 */
3867          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3868         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3869         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3870         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3871         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3872         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3873         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3874         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3875         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3876         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3877 };
3878
3879 /* Calculates a relative dB value from a ratio of linear
3880  *   (i.e. not dB) signal levels.
3881  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3882 int iwl4965_calc_db_from_ratio(int sig_ratio)
3883 {
3884         /* 1000:1 or higher just report as 60 dB */
3885         if (sig_ratio >= 1000)
3886                 return 60;
3887
3888         /* 100:1 or higher, divide by 10 and use table,
3889          *   add 20 dB to make up for divide by 10 */
3890         if (sig_ratio >= 100)
3891                 return (20 + (int)ratio2dB[sig_ratio/10]);
3892
3893         /* We shouldn't see this */
3894         if (sig_ratio < 1)
3895                 return 0;
3896
3897         /* Use table for ratios 1:1 - 99:1 */
3898         return (int)ratio2dB[sig_ratio];
3899 }
3900
3901 #define PERFECT_RSSI (-20) /* dBm */
3902 #define WORST_RSSI (-95)   /* dBm */
3903 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3904
3905 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3906  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3907  *   about formulas used below. */
3908 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
3909 {
3910         int sig_qual;
3911         int degradation = PERFECT_RSSI - rssi_dbm;
3912
3913         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3914          * as indicator; formula is (signal dbm - noise dbm).
3915          * SNR at or above 40 is a great signal (100%).
3916          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3917          * Weakest usable signal is usually 10 - 15 dB SNR. */
3918         if (noise_dbm) {
3919                 if (rssi_dbm - noise_dbm >= 40)
3920                         return 100;
3921                 else if (rssi_dbm < noise_dbm)
3922                         return 0;
3923                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3924
3925         /* Else use just the signal level.
3926          * This formula is a least squares fit of data points collected and
3927          *   compared with a reference system that had a percentage (%) display
3928          *   for signal quality. */
3929         } else
3930                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3931                             (15 * RSSI_RANGE + 62 * degradation)) /
3932                            (RSSI_RANGE * RSSI_RANGE);
3933
3934         if (sig_qual > 100)
3935                 sig_qual = 100;
3936         else if (sig_qual < 1)
3937                 sig_qual = 0;
3938
3939         return sig_qual;
3940 }
3941
3942 /**
3943  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
3944  *
3945  * Uses the priv->rx_handlers callback function array to invoke
3946  * the appropriate handlers, including command responses,
3947  * frame-received notifications, and other notifications.
3948  */
3949 static void iwl4965_rx_handle(struct iwl_priv *priv)
3950 {
3951         struct iwl4965_rx_mem_buffer *rxb;
3952         struct iwl4965_rx_packet *pkt;
3953         struct iwl4965_rx_queue *rxq = &priv->rxq;
3954         u32 r, i;
3955         int reclaim;
3956         unsigned long flags;
3957         u8 fill_rx = 0;
3958         u32 count = 8;
3959
3960         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3961          * buffer that the driver may process (last buffer filled by ucode). */
3962         r = iwl4965_hw_get_rx_read(priv);
3963         i = rxq->read;
3964
3965         /* Rx interrupt, but nothing sent from uCode */
3966         if (i == r)
3967                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3968
3969         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3970                 fill_rx = 1;
3971
3972         while (i != r) {
3973                 rxb = rxq->queue[i];
3974
3975                 /* If an RXB doesn't have a Rx queue slot associated with it,
3976                  * then a bug has been introduced in the queue refilling
3977                  * routines -- catch it here */
3978                 BUG_ON(rxb == NULL);
3979
3980                 rxq->queue[i] = NULL;
3981
3982                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3983                                             priv->hw_setting.rx_buf_size,
3984                                             PCI_DMA_FROMDEVICE);
3985                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3986
3987                 /* Reclaim a command buffer only if this packet is a response
3988                  *   to a (driver-originated) command.
3989                  * If the packet (e.g. Rx frame) originated from uCode,
3990                  *   there is no command buffer to reclaim.
3991                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3992                  *   but apparently a few don't get set; catch them here. */
3993                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3994                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
3995                         (pkt->hdr.cmd != REPLY_RX) &&
3996                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
3997                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3998                         (pkt->hdr.cmd != REPLY_TX);
3999
4000                 /* Based on type of command response or notification,
4001                  *   handle those that need handling via function in
4002                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4003                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4004                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4005                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4006                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4007                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4008                 } else {
4009                         /* No handling needed */
4010                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4011                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4012                                 r, i, get_cmd_string(pkt->hdr.cmd),
4013                                 pkt->hdr.cmd);
4014                 }
4015
4016                 if (reclaim) {
4017                         /* Invoke any callbacks, transfer the skb to caller, and
4018                          * fire off the (possibly) blocking iwl_send_cmd()
4019                          * as we reclaim the driver command queue */
4020                         if (rxb && rxb->skb)
4021                                 iwl4965_tx_cmd_complete(priv, rxb);
4022                         else
4023                                 IWL_WARNING("Claim null rxb?\n");
4024                 }
4025
4026                 /* For now we just don't re-use anything.  We can tweak this
4027                  * later to try and re-use notification packets and SKBs that
4028                  * fail to Rx correctly */
4029                 if (rxb->skb != NULL) {
4030                         priv->alloc_rxb_skb--;
4031                         dev_kfree_skb_any(rxb->skb);
4032                         rxb->skb = NULL;
4033                 }
4034
4035                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4036                                  priv->hw_setting.rx_buf_size,
4037                                  PCI_DMA_FROMDEVICE);
4038                 spin_lock_irqsave(&rxq->lock, flags);
4039                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4040                 spin_unlock_irqrestore(&rxq->lock, flags);
4041                 i = (i + 1) & RX_QUEUE_MASK;
4042                 /* If there are a lot of unused frames,
4043                  * restock the Rx queue so ucode wont assert. */
4044                 if (fill_rx) {
4045                         count++;
4046                         if (count >= 8) {
4047                                 priv->rxq.read = i;
4048                                 __iwl4965_rx_replenish(priv);
4049                                 count = 0;
4050                         }
4051                 }
4052         }
4053
4054         /* Backtrack one entry */
4055         priv->rxq.read = i;
4056         iwl4965_rx_queue_restock(priv);
4057 }
4058
4059 /**
4060  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4061  */
4062 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4063                                   struct iwl4965_tx_queue *txq)
4064 {
4065         u32 reg = 0;
4066         int rc = 0;
4067         int txq_id = txq->q.id;
4068
4069         if (txq->need_update == 0)
4070                 return rc;
4071
4072         /* if we're trying to save power */
4073         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4074                 /* wake up nic if it's powered down ...
4075                  * uCode will wake up, and interrupt us again, so next
4076                  * time we'll skip this part. */
4077                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4078
4079                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4080                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4081                         iwl_set_bit(priv, CSR_GP_CNTRL,
4082                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4083                         return rc;
4084                 }
4085
4086                 /* restore this queue's parameters in nic hardware. */
4087                 rc = iwl_grab_nic_access(priv);
4088                 if (rc)
4089                         return rc;
4090                 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
4091                                      txq->q.write_ptr | (txq_id << 8));
4092                 iwl_release_nic_access(priv);
4093
4094         /* else not in power-save mode, uCode will never sleep when we're
4095          * trying to tx (during RFKILL, we're not trying to tx). */
4096         } else
4097                 iwl_write32(priv, HBUS_TARG_WRPTR,
4098                             txq->q.write_ptr | (txq_id << 8));
4099
4100         txq->need_update = 0;
4101
4102         return rc;
4103 }
4104
4105 #ifdef CONFIG_IWLWIFI_DEBUG
4106 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4107 {
4108         DECLARE_MAC_BUF(mac);
4109
4110         IWL_DEBUG_RADIO("RX CONFIG:\n");
4111         iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4112         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4113         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4114         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4115                         le32_to_cpu(rxon->filter_flags));
4116         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4117         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4118                         rxon->ofdm_basic_rates);
4119         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4120         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4121                         print_mac(mac, rxon->node_addr));
4122         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4123                         print_mac(mac, rxon->bssid_addr));
4124         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4125 }
4126 #endif
4127
4128 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4129 {
4130         IWL_DEBUG_ISR("Enabling interrupts\n");
4131         set_bit(STATUS_INT_ENABLED, &priv->status);
4132         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4133 }
4134
4135 /* call this function to flush any scheduled tasklet */
4136 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
4137 {
4138         /* wait to make sure we flush pedding tasklet*/
4139         synchronize_irq(priv->pci_dev->irq);
4140         tasklet_kill(&priv->irq_tasklet);
4141 }
4142
4143 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4144 {
4145         clear_bit(STATUS_INT_ENABLED, &priv->status);
4146
4147         /* disable interrupts from uCode/NIC to host */
4148         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4149
4150         /* acknowledge/clear/reset any interrupts still pending
4151          * from uCode or flow handler (Rx/Tx DMA) */
4152         iwl_write32(priv, CSR_INT, 0xffffffff);
4153         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4154         IWL_DEBUG_ISR("Disabled interrupts\n");
4155 }
4156
4157 static const char *desc_lookup(int i)
4158 {
4159         switch (i) {
4160         case 1:
4161                 return "FAIL";
4162         case 2:
4163                 return "BAD_PARAM";
4164         case 3:
4165                 return "BAD_CHECKSUM";
4166         case 4:
4167                 return "NMI_INTERRUPT";
4168         case 5:
4169                 return "SYSASSERT";
4170         case 6:
4171                 return "FATAL_ERROR";
4172         }
4173
4174         return "UNKNOWN";
4175 }
4176
4177 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4178 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4179
4180 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4181 {
4182         u32 data2, line;
4183         u32 desc, time, count, base, data1;
4184         u32 blink1, blink2, ilink1, ilink2;
4185         int rc;
4186
4187         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4188
4189         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4190                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4191                 return;
4192         }
4193
4194         rc = iwl_grab_nic_access(priv);
4195         if (rc) {
4196                 IWL_WARNING("Can not read from adapter at this time.\n");
4197                 return;
4198         }
4199
4200         count = iwl_read_targ_mem(priv, base);
4201
4202         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4203                 IWL_ERROR("Start IWL Error Log Dump:\n");
4204                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4205         }
4206
4207         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
4208         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
4209         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
4210         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
4211         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
4212         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
4213         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
4214         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
4215         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
4216
4217         IWL_ERROR("Desc               Time       "
4218                   "data1      data2      line\n");
4219         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4220                   desc_lookup(desc), desc, time, data1, data2, line);
4221         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4222         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4223                   ilink1, ilink2);
4224
4225         iwl_release_nic_access(priv);
4226 }
4227
4228 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4229
4230 /**
4231  * iwl4965_print_event_log - Dump error event log to syslog
4232  *
4233  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
4234  */
4235 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4236                                 u32 num_events, u32 mode)
4237 {
4238         u32 i;
4239         u32 base;       /* SRAM byte address of event log header */
4240         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4241         u32 ptr;        /* SRAM byte address of log data */
4242         u32 ev, time, data; /* event log data */
4243
4244         if (num_events == 0)
4245                 return;
4246
4247         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4248
4249         if (mode == 0)
4250                 event_size = 2 * sizeof(u32);
4251         else
4252                 event_size = 3 * sizeof(u32);
4253
4254         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4255
4256         /* "time" is actually "data" for mode 0 (no timestamp).
4257          * place event id # at far right for easier visual parsing. */
4258         for (i = 0; i < num_events; i++) {
4259                 ev = iwl_read_targ_mem(priv, ptr);
4260                 ptr += sizeof(u32);
4261                 time = iwl_read_targ_mem(priv, ptr);
4262                 ptr += sizeof(u32);
4263                 if (mode == 0)
4264                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4265                 else {
4266                         data = iwl_read_targ_mem(priv, ptr);
4267                         ptr += sizeof(u32);
4268                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4269                 }
4270         }
4271 }
4272
4273 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4274 {
4275         int rc;
4276         u32 base;       /* SRAM byte address of event log header */
4277         u32 capacity;   /* event log capacity in # entries */
4278         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4279         u32 num_wraps;  /* # times uCode wrapped to top of log */
4280         u32 next_entry; /* index of next entry to be written by uCode */
4281         u32 size;       /* # entries that we'll print */
4282
4283         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4284         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4285                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4286                 return;
4287         }
4288
4289         rc = iwl_grab_nic_access(priv);
4290         if (rc) {
4291                 IWL_WARNING("Can not read from adapter at this time.\n");
4292                 return;
4293         }
4294
4295         /* event log header */
4296         capacity = iwl_read_targ_mem(priv, base);
4297         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4298         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4299         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
4300
4301         size = num_wraps ? capacity : next_entry;
4302
4303         /* bail out if nothing in log */
4304         if (size == 0) {
4305                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4306                 iwl_release_nic_access(priv);
4307                 return;
4308         }
4309
4310         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4311                   size, num_wraps);
4312
4313         /* if uCode has wrapped back to top of log, start at the oldest entry,
4314          * i.e the next one that uCode would fill. */
4315         if (num_wraps)
4316                 iwl4965_print_event_log(priv, next_entry,
4317                                     capacity - next_entry, mode);
4318
4319         /* (then/else) start at top of log */
4320         iwl4965_print_event_log(priv, 0, next_entry, mode);
4321
4322         iwl_release_nic_access(priv);
4323 }
4324
4325 /**
4326  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4327  */
4328 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4329 {
4330         /* Set the FW error flag -- cleared on iwl4965_down */
4331         set_bit(STATUS_FW_ERROR, &priv->status);
4332
4333         /* Cancel currently queued command. */
4334         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4335
4336 #ifdef CONFIG_IWLWIFI_DEBUG
4337         if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4338                 iwl4965_dump_nic_error_log(priv);
4339                 iwl4965_dump_nic_event_log(priv);
4340                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4341         }
4342 #endif
4343
4344         wake_up_interruptible(&priv->wait_command_queue);
4345
4346         /* Keep the restart process from trying to send host
4347          * commands by clearing the INIT status bit */
4348         clear_bit(STATUS_READY, &priv->status);
4349
4350         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4351                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4352                           "Restarting adapter due to uCode error.\n");
4353
4354                 if (iwl_is_associated(priv)) {
4355                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4356                                sizeof(priv->recovery_rxon));
4357                         priv->error_recovering = 1;
4358                 }
4359                 queue_work(priv->workqueue, &priv->restart);
4360         }
4361 }
4362
4363 static void iwl4965_error_recovery(struct iwl_priv *priv)
4364 {
4365         unsigned long flags;
4366
4367         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4368                sizeof(priv->staging_rxon));
4369         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4370         iwl4965_commit_rxon(priv);
4371
4372         iwl4965_rxon_add_station(priv, priv->bssid, 1);
4373
4374         spin_lock_irqsave(&priv->lock, flags);
4375         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4376         priv->error_recovering = 0;
4377         spin_unlock_irqrestore(&priv->lock, flags);
4378 }
4379
4380 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4381 {
4382         u32 inta, handled = 0;
4383         u32 inta_fh;
4384         unsigned long flags;
4385 #ifdef CONFIG_IWLWIFI_DEBUG
4386         u32 inta_mask;
4387 #endif
4388
4389         spin_lock_irqsave(&priv->lock, flags);
4390
4391         /* Ack/clear/reset pending uCode interrupts.
4392          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4393          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4394         inta = iwl_read32(priv, CSR_INT);
4395         iwl_write32(priv, CSR_INT, inta);
4396
4397         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4398          * Any new interrupts that happen after this, either while we're
4399          * in this tasklet, or later, will show up in next ISR/tasklet. */
4400         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4401         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4402
4403 #ifdef CONFIG_IWLWIFI_DEBUG
4404         if (iwl_debug_level & IWL_DL_ISR) {
4405                 /* just for debug */
4406                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4407                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4408                               inta, inta_mask, inta_fh);
4409         }
4410 #endif
4411
4412         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4413          * atomic, make sure that inta covers all the interrupts that
4414          * we've discovered, even if FH interrupt came in just after
4415          * reading CSR_INT. */
4416         if (inta_fh & CSR49_FH_INT_RX_MASK)
4417                 inta |= CSR_INT_BIT_FH_RX;
4418         if (inta_fh & CSR49_FH_INT_TX_MASK)
4419                 inta |= CSR_INT_BIT_FH_TX;
4420
4421         /* Now service all interrupt bits discovered above. */
4422         if (inta & CSR_INT_BIT_HW_ERR) {
4423                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4424
4425                 /* Tell the device to stop sending interrupts */
4426                 iwl4965_disable_interrupts(priv);
4427
4428                 iwl4965_irq_handle_error(priv);
4429
4430                 handled |= CSR_INT_BIT_HW_ERR;
4431
4432                 spin_unlock_irqrestore(&priv->lock, flags);
4433
4434                 return;
4435         }
4436
4437 #ifdef CONFIG_IWLWIFI_DEBUG
4438         if (iwl_debug_level & (IWL_DL_ISR)) {
4439                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4440                 if (inta & CSR_INT_BIT_SCD)
4441                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4442                                       "the frame/frames.\n");
4443
4444                 /* Alive notification via Rx interrupt will do the real work */
4445                 if (inta & CSR_INT_BIT_ALIVE)
4446                         IWL_DEBUG_ISR("Alive interrupt\n");
4447         }
4448 #endif
4449         /* Safely ignore these bits for debug checks below */
4450         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4451
4452         /* HW RF KILL switch toggled */
4453         if (inta & CSR_INT_BIT_RF_KILL) {
4454                 int hw_rf_kill = 0;
4455                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4456                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4457                         hw_rf_kill = 1;
4458
4459                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4460                                 "RF_KILL bit toggled to %s.\n",
4461                                 hw_rf_kill ? "disable radio":"enable radio");
4462
4463                 /* Queue restart only if RF_KILL switch was set to "kill"
4464                  *   when we loaded driver, and is now set to "enable".
4465                  * After we're Alive, RF_KILL gets handled by
4466                  *   iwl4965_rx_card_state_notif() */
4467                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4468                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4469                         queue_work(priv->workqueue, &priv->restart);
4470                 }
4471
4472                 handled |= CSR_INT_BIT_RF_KILL;
4473         }
4474
4475         /* Chip got too hot and stopped itself */
4476         if (inta & CSR_INT_BIT_CT_KILL) {
4477                 IWL_ERROR("Microcode CT kill error detected.\n");
4478                 handled |= CSR_INT_BIT_CT_KILL;
4479         }
4480
4481         /* Error detected by uCode */
4482         if (inta & CSR_INT_BIT_SW_ERR) {
4483                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4484                           inta);
4485                 iwl4965_irq_handle_error(priv);
4486                 handled |= CSR_INT_BIT_SW_ERR;
4487         }
4488
4489         /* uCode wakes up after power-down sleep */
4490         if (inta & CSR_INT_BIT_WAKEUP) {
4491                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4492                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4493                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4494                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4495                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4496                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4497                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4498                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4499
4500                 handled |= CSR_INT_BIT_WAKEUP;
4501         }
4502
4503         /* All uCode command responses, including Tx command responses,
4504          * Rx "responses" (frame-received notification), and other
4505          * notifications from uCode come through here*/
4506         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4507                 iwl4965_rx_handle(priv);
4508                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4509         }
4510
4511         if (inta & CSR_INT_BIT_FH_TX) {
4512                 IWL_DEBUG_ISR("Tx interrupt\n");
4513                 handled |= CSR_INT_BIT_FH_TX;
4514         }
4515
4516         if (inta & ~handled)
4517                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4518
4519         if (inta & ~CSR_INI_SET_MASK) {
4520                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4521                          inta & ~CSR_INI_SET_MASK);
4522                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4523         }
4524
4525         /* Re-enable all interrupts */
4526         /* only Re-enable if diabled by irq */
4527         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4528                 iwl4965_enable_interrupts(priv);
4529
4530 #ifdef CONFIG_IWLWIFI_DEBUG
4531         if (iwl_debug_level & (IWL_DL_ISR)) {
4532                 inta = iwl_read32(priv, CSR_INT);
4533                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4534                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4535                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4536                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4537         }
4538 #endif
4539         spin_unlock_irqrestore(&priv->lock, flags);
4540 }
4541
4542 static irqreturn_t iwl4965_isr(int irq, void *data)
4543 {
4544         struct iwl_priv *priv = data;
4545         u32 inta, inta_mask;
4546         u32 inta_fh;
4547         if (!priv)
4548                 return IRQ_NONE;
4549
4550         spin_lock(&priv->lock);
4551
4552         /* Disable (but don't clear!) interrupts here to avoid
4553          *    back-to-back ISRs and sporadic interrupts from our NIC.
4554          * If we have something to service, the tasklet will re-enable ints.
4555          * If we *don't* have something, we'll re-enable before leaving here. */
4556         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
4557         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4558
4559         /* Discover which interrupts are active/pending */
4560         inta = iwl_read32(priv, CSR_INT);
4561         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4562
4563         /* Ignore interrupt if there's nothing in NIC to service.
4564          * This may be due to IRQ shared with another device,
4565          * or due to sporadic interrupts thrown from our NIC. */
4566         if (!inta && !inta_fh) {
4567                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4568                 goto none;
4569         }
4570
4571         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4572                 /* Hardware disappeared. It might have already raised
4573                  * an interrupt */
4574                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4575                 goto unplugged;
4576         }
4577
4578         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4579                       inta, inta_mask, inta_fh);
4580
4581         inta &= ~CSR_INT_BIT_SCD;
4582
4583         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4584         if (likely(inta || inta_fh))
4585                 tasklet_schedule(&priv->irq_tasklet);
4586
4587  unplugged:
4588         spin_unlock(&priv->lock);
4589         return IRQ_HANDLED;
4590
4591  none:
4592         /* re-enable interrupts here since we don't have anything to service. */
4593         /* only Re-enable if diabled by irq */
4594         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4595                 iwl4965_enable_interrupts(priv);
4596         spin_unlock(&priv->lock);
4597         return IRQ_NONE;
4598 }
4599
4600 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4601  * sending probe req.  This should be set long enough to hear probe responses
4602  * from more than one AP.  */
4603 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
4604 #define IWL_ACTIVE_DWELL_TIME_52    (10)
4605
4606 /* For faster active scanning, scan will move to the next channel if fewer than
4607  * PLCP_QUIET_THRESH packets are heard on this channel within
4608  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4609  * time if it's a quiet channel (nothing responded to our probe, and there's
4610  * no other traffic).
4611  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4612 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4613 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
4614
4615 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4616  * Must be set longer than active dwell time.
4617  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4618 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4619 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4620 #define IWL_PASSIVE_DWELL_BASE      (100)
4621 #define IWL_CHANNEL_TUNE_TIME       5
4622
4623 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4624                                                 enum ieee80211_band band)
4625 {
4626         if (band == IEEE80211_BAND_5GHZ)
4627                 return IWL_ACTIVE_DWELL_TIME_52;
4628         else
4629                 return IWL_ACTIVE_DWELL_TIME_24;
4630 }
4631
4632 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4633                                           enum ieee80211_band band)
4634 {
4635         u16 active = iwl4965_get_active_dwell_time(priv, band);
4636         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4637             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4638             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4639
4640         if (iwl_is_associated(priv)) {
4641                 /* If we're associated, we clamp the maximum passive
4642                  * dwell time to be 98% of the beacon interval (minus
4643                  * 2 * channel tune time) */
4644                 passive = priv->beacon_int;
4645                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4646                         passive = IWL_PASSIVE_DWELL_BASE;
4647                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4648         }
4649
4650         if (passive <= active)
4651                 passive = active + 1;
4652
4653         return passive;
4654 }
4655
4656 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4657                                          enum ieee80211_band band,
4658                                      u8 is_active, u8 direct_mask,
4659                                      struct iwl4965_scan_channel *scan_ch)
4660 {
4661         const struct ieee80211_channel *channels = NULL;
4662         const struct ieee80211_supported_band *sband;
4663         const struct iwl_channel_info *ch_info;
4664         u16 passive_dwell = 0;
4665         u16 active_dwell = 0;
4666         int added, i;
4667
4668         sband = iwl4965_get_hw_mode(priv, band);
4669         if (!sband)
4670                 return 0;
4671
4672         channels = sband->channels;
4673
4674         active_dwell = iwl4965_get_active_dwell_time(priv, band);
4675         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4676
4677         for (i = 0, added = 0; i < sband->n_channels; i++) {
4678                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4679                         continue;
4680
4681                 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
4682                     le16_to_cpu(priv->active_rxon.channel)) {
4683                         if (iwl_is_associated(priv)) {
4684                                 IWL_DEBUG_SCAN
4685                                     ("Skipping current channel %d\n",
4686                                      le16_to_cpu(priv->active_rxon.channel));
4687                                 continue;
4688                         }
4689                 } else if (priv->only_active_channel)
4690                         continue;
4691
4692                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4693
4694                 ch_info = iwl_get_channel_info(priv, band,
4695                                          scan_ch->channel);
4696                 if (!is_channel_valid(ch_info)) {
4697                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4698                                        scan_ch->channel);
4699                         continue;
4700                 }
4701
4702                 if (!is_active || is_channel_passive(ch_info) ||
4703                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4704                         scan_ch->type = 0;      /* passive */
4705                 else
4706                         scan_ch->type = 1;      /* active */
4707
4708                 if (scan_ch->type & 1)
4709                         scan_ch->type |= (direct_mask << 1);
4710
4711                 if (is_channel_narrow(ch_info))
4712                         scan_ch->type |= (1 << 7);
4713
4714                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4715                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4716
4717                 /* Set txpower levels to defaults */
4718                 scan_ch->tpc.dsp_atten = 110;
4719                 /* scan_pwr_info->tpc.dsp_atten; */
4720
4721                 /*scan_pwr_info->tpc.tx_gain; */
4722                 if (band == IEEE80211_BAND_5GHZ)
4723                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4724                 else {
4725                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4726                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4727                          * power level:
4728                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4729                          */
4730                 }
4731
4732                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4733                                scan_ch->channel,
4734                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4735                                (scan_ch->type & 1) ?
4736                                active_dwell : passive_dwell);
4737
4738                 scan_ch++;
4739                 added++;
4740         }
4741
4742         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4743         return added;
4744 }
4745
4746 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4747                               struct ieee80211_rate *rates)
4748 {
4749         int i;
4750
4751         for (i = 0; i < IWL_RATE_COUNT; i++) {
4752                 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4753                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4754                 rates[i].hw_value_short = i;
4755                 rates[i].flags = 0;
4756                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4757                         /*
4758                          * If CCK != 1M then set short preamble rate flag.
4759                          */
4760                         rates[i].flags |=
4761                                 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4762                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
4763                 }
4764         }
4765 }
4766
4767 /**
4768  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4769  */
4770 int iwl4965_init_geos(struct iwl_priv *priv)
4771 {
4772         struct iwl_channel_info *ch;
4773         struct ieee80211_supported_band *sband;
4774         struct ieee80211_channel *channels;
4775         struct ieee80211_channel *geo_ch;
4776         struct ieee80211_rate *rates;
4777         int i = 0;
4778
4779         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4780             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4781                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4782                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4783                 return 0;
4784         }
4785
4786         channels = kzalloc(sizeof(struct ieee80211_channel) *
4787                            priv->channel_count, GFP_KERNEL);
4788         if (!channels)
4789                 return -ENOMEM;
4790
4791         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4792                         GFP_KERNEL);
4793         if (!rates) {
4794                 kfree(channels);
4795                 return -ENOMEM;
4796         }
4797
4798         /* 5.2GHz channels start after the 2.4GHz channels */
4799         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4800         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4801         /* just OFDM */
4802         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4803         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4804
4805         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
4806
4807         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4808         sband->channels = channels;
4809         /* OFDM & CCK */
4810         sband->bitrates = rates;
4811         sband->n_bitrates = IWL_RATE_COUNT;
4812
4813         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
4814
4815         priv->ieee_channels = channels;
4816         priv->ieee_rates = rates;
4817
4818         iwl4965_init_hw_rates(priv, rates);
4819
4820         for (i = 0;  i < priv->channel_count; i++) {
4821                 ch = &priv->channel_info[i];
4822
4823                 /* FIXME: might be removed if scan is OK */
4824                 if (!is_channel_valid(ch))
4825                         continue;
4826
4827                 if (is_channel_a_band(ch))
4828                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4829                 else
4830                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4831
4832                 geo_ch = &sband->channels[sband->n_channels++];
4833
4834                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4835                 geo_ch->max_power = ch->max_power_avg;
4836                 geo_ch->max_antenna_gain = 0xff;
4837                 geo_ch->hw_value = ch->channel;
4838
4839                 if (is_channel_valid(ch)) {
4840                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4841                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4842
4843                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4844                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4845
4846                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4847                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4848
4849                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4850                                 priv->max_channel_txpower_limit =
4851                                     ch->max_power_avg;
4852                 } else {
4853                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4854                 }
4855
4856                 /* Save flags for reg domain usage */
4857                 geo_ch->orig_flags = geo_ch->flags;
4858
4859                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4860                                 ch->channel, geo_ch->center_freq,
4861                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4862                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4863                                 "restricted" : "valid",
4864                                  geo_ch->flags);
4865         }
4866
4867         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4868              priv->cfg->sku & IWL_SKU_A) {
4869                 printk(KERN_INFO DRV_NAME
4870                        ": Incorrectly detected BG card as ABG.  Please send "
4871                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4872                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
4873                 priv->cfg->sku &= ~IWL_SKU_A;
4874         }
4875
4876         printk(KERN_INFO DRV_NAME
4877                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4878                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4879                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4880
4881         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4882                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4883                         &priv->bands[IEEE80211_BAND_2GHZ];
4884         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4885                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4886                         &priv->bands[IEEE80211_BAND_5GHZ];
4887
4888         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4889
4890         return 0;
4891 }
4892
4893 /*
4894  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
4895  */
4896 void iwl4965_free_geos(struct iwl_priv *priv)
4897 {
4898         kfree(priv->ieee_channels);
4899         kfree(priv->ieee_rates);
4900         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4901 }
4902
4903 /******************************************************************************
4904  *
4905  * uCode download functions
4906  *
4907  ******************************************************************************/
4908
4909 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
4910 {
4911         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4912         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4913         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4914         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4915         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4916         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4917 }
4918
4919 /**
4920  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
4921  *     looking at all data.
4922  */
4923 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
4924                                  u32 len)
4925 {
4926         u32 val;
4927         u32 save_len = len;
4928         int rc = 0;
4929         u32 errcnt;
4930
4931         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4932
4933         rc = iwl_grab_nic_access(priv);
4934         if (rc)
4935                 return rc;
4936
4937         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
4938
4939         errcnt = 0;
4940         for (; len > 0; len -= sizeof(u32), image++) {
4941                 /* read data comes through single port, auto-incr addr */
4942                 /* NOTE: Use the debugless read so we don't flood kernel log
4943                  * if IWL_DL_IO is set */
4944                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4945                 if (val != le32_to_cpu(*image)) {
4946                         IWL_ERROR("uCode INST section is invalid at "
4947                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4948                                   save_len - len, val, le32_to_cpu(*image));
4949                         rc = -EIO;
4950                         errcnt++;
4951                         if (errcnt >= 20)
4952                                 break;
4953                 }
4954         }
4955
4956         iwl_release_nic_access(priv);
4957
4958         if (!errcnt)
4959                 IWL_DEBUG_INFO
4960                     ("ucode image in INSTRUCTION memory is good\n");
4961
4962         return rc;
4963 }
4964
4965
4966 /**
4967  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
4968  *   using sample data 100 bytes apart.  If these sample points are good,
4969  *   it's a pretty good bet that everything between them is good, too.
4970  */
4971 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4972 {
4973         u32 val;
4974         int rc = 0;
4975         u32 errcnt = 0;
4976         u32 i;
4977
4978         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4979
4980         rc = iwl_grab_nic_access(priv);
4981         if (rc)
4982                 return rc;
4983
4984         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4985                 /* read data comes through single port, auto-incr addr */
4986                 /* NOTE: Use the debugless read so we don't flood kernel log
4987                  * if IWL_DL_IO is set */
4988                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4989                         i + RTC_INST_LOWER_BOUND);
4990                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4991                 if (val != le32_to_cpu(*image)) {
4992 #if 0 /* Enable this if you want to see details */
4993                         IWL_ERROR("uCode INST section is invalid at "
4994                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4995                                   i, val, *image);
4996 #endif
4997                         rc = -EIO;
4998                         errcnt++;
4999                         if (errcnt >= 3)
5000                                 break;
5001                 }
5002         }
5003
5004         iwl_release_nic_access(priv);
5005
5006         return rc;
5007 }
5008
5009
5010 /**
5011  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5012  *    and verify its contents
5013  */
5014 static int iwl4965_verify_ucode(struct iwl_priv *priv)
5015 {
5016         __le32 *image;
5017         u32 len;
5018         int rc = 0;
5019
5020         /* Try bootstrap */
5021         image = (__le32 *)priv->ucode_boot.v_addr;
5022         len = priv->ucode_boot.len;
5023         rc = iwl4965_verify_inst_sparse(priv, image, len);
5024         if (rc == 0) {
5025                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5026                 return 0;
5027         }
5028
5029         /* Try initialize */
5030         image = (__le32 *)priv->ucode_init.v_addr;
5031         len = priv->ucode_init.len;
5032         rc = iwl4965_verify_inst_sparse(priv, image, len);
5033         if (rc == 0) {
5034                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5035                 return 0;
5036         }
5037
5038         /* Try runtime/protocol */
5039         image = (__le32 *)priv->ucode_code.v_addr;
5040         len = priv->ucode_code.len;
5041         rc = iwl4965_verify_inst_sparse(priv, image, len);
5042         if (rc == 0) {
5043                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5044                 return 0;
5045         }
5046
5047         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5048
5049         /* Since nothing seems to match, show first several data entries in
5050          * instruction SRAM, so maybe visual inspection will give a clue.
5051          * Selection of bootstrap image (vs. other images) is arbitrary. */
5052         image = (__le32 *)priv->ucode_boot.v_addr;
5053         len = priv->ucode_boot.len;
5054         rc = iwl4965_verify_inst_full(priv, image, len);
5055
5056         return rc;
5057 }
5058
5059 static void iwl4965_nic_start(struct iwl_priv *priv)
5060 {
5061         /* Remove all resets to allow NIC to operate */
5062         iwl_write32(priv, CSR_RESET, 0);
5063 }
5064
5065
5066 /**
5067  * iwl4965_read_ucode - Read uCode images from disk file.
5068  *
5069  * Copy into buffers for card to fetch via bus-mastering
5070  */
5071 static int iwl4965_read_ucode(struct iwl_priv *priv)
5072 {
5073         struct iwl4965_ucode *ucode;
5074         int ret;
5075         const struct firmware *ucode_raw;
5076         const char *name = priv->cfg->fw_name;
5077         u8 *src;
5078         size_t len;
5079         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5080
5081         /* Ask kernel firmware_class module to get the boot firmware off disk.
5082          * request_firmware() is synchronous, file is in memory on return. */
5083         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5084         if (ret < 0) {
5085                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5086                                         name, ret);
5087                 goto error;
5088         }
5089
5090         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5091                        name, ucode_raw->size);
5092
5093         /* Make sure that we got at least our header! */
5094         if (ucode_raw->size < sizeof(*ucode)) {
5095                 IWL_ERROR("File size way too small!\n");
5096                 ret = -EINVAL;
5097                 goto err_release;
5098         }
5099
5100         /* Data from ucode file:  header followed by uCode images */
5101         ucode = (void *)ucode_raw->data;
5102
5103         ver = le32_to_cpu(ucode->ver);
5104         inst_size = le32_to_cpu(ucode->inst_size);
5105         data_size = le32_to_cpu(ucode->data_size);
5106         init_size = le32_to_cpu(ucode->init_size);
5107         init_data_size = le32_to_cpu(ucode->init_data_size);
5108         boot_size = le32_to_cpu(ucode->boot_size);
5109
5110         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5111         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5112                        inst_size);
5113         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5114                        data_size);
5115         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5116                        init_size);
5117         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5118                        init_data_size);
5119         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5120                        boot_size);
5121
5122         /* Verify size of file vs. image size info in file's header */
5123         if (ucode_raw->size < sizeof(*ucode) +
5124                 inst_size + data_size + init_size +
5125                 init_data_size + boot_size) {
5126
5127                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5128                                (int)ucode_raw->size);
5129                 ret = -EINVAL;
5130                 goto err_release;
5131         }
5132
5133         /* Verify that uCode images will fit in card's SRAM */
5134         if (inst_size > IWL_MAX_INST_SIZE) {
5135                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5136                                inst_size);
5137                 ret = -EINVAL;
5138                 goto err_release;
5139         }
5140
5141         if (data_size > IWL_MAX_DATA_SIZE) {
5142                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5143                                 data_size);
5144                 ret = -EINVAL;
5145                 goto err_release;
5146         }
5147         if (init_size > IWL_MAX_INST_SIZE) {
5148                 IWL_DEBUG_INFO
5149                     ("uCode init instr len %d too large to fit in\n",
5150                       init_size);
5151                 ret = -EINVAL;
5152                 goto err_release;
5153         }
5154         if (init_data_size > IWL_MAX_DATA_SIZE) {
5155                 IWL_DEBUG_INFO
5156                     ("uCode init data len %d too large to fit in\n",
5157                       init_data_size);
5158                 ret = -EINVAL;
5159                 goto err_release;
5160         }
5161         if (boot_size > IWL_MAX_BSM_SIZE) {
5162                 IWL_DEBUG_INFO
5163                     ("uCode boot instr len %d too large to fit in\n",
5164                       boot_size);
5165                 ret = -EINVAL;
5166                 goto err_release;
5167         }
5168
5169         /* Allocate ucode buffers for card's bus-master loading ... */
5170
5171         /* Runtime instructions and 2 copies of data:
5172          * 1) unmodified from disk
5173          * 2) backup cache for save/restore during power-downs */
5174         priv->ucode_code.len = inst_size;
5175         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5176
5177         priv->ucode_data.len = data_size;
5178         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5179
5180         priv->ucode_data_backup.len = data_size;
5181         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5182
5183         /* Initialization instructions and data */
5184         if (init_size && init_data_size) {
5185                 priv->ucode_init.len = init_size;
5186                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5187
5188                 priv->ucode_init_data.len = init_data_size;
5189                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5190
5191                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5192                         goto err_pci_alloc;
5193         }
5194
5195         /* Bootstrap (instructions only, no data) */
5196         if (boot_size) {
5197                 priv->ucode_boot.len = boot_size;
5198                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5199
5200                 if (!priv->ucode_boot.v_addr)
5201                         goto err_pci_alloc;
5202         }
5203
5204         /* Copy images into buffers for card's bus-master reads ... */
5205
5206         /* Runtime instructions (first block of data in file) */
5207         src = &ucode->data[0];
5208         len = priv->ucode_code.len;
5209         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5210         memcpy(priv->ucode_code.v_addr, src, len);
5211         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5212                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5213
5214         /* Runtime data (2nd block)
5215          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
5216         src = &ucode->data[inst_size];
5217         len = priv->ucode_data.len;
5218         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5219         memcpy(priv->ucode_data.v_addr, src, len);
5220         memcpy(priv->ucode_data_backup.v_addr, src, len);
5221
5222         /* Initialization instructions (3rd block) */
5223         if (init_size) {
5224                 src = &ucode->data[inst_size + data_size];
5225                 len = priv->ucode_init.len;
5226                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5227                                 len);
5228                 memcpy(priv->ucode_init.v_addr, src, len);
5229         }
5230
5231         /* Initialization data (4th block) */
5232         if (init_data_size) {
5233                 src = &ucode->data[inst_size + data_size + init_size];
5234                 len = priv->ucode_init_data.len;
5235                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5236                                len);
5237                 memcpy(priv->ucode_init_data.v_addr, src, len);
5238         }
5239
5240         /* Bootstrap instructions (5th block) */
5241         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5242         len = priv->ucode_boot.len;
5243         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5244         memcpy(priv->ucode_boot.v_addr, src, len);
5245
5246         /* We have our copies now, allow OS release its copies */
5247         release_firmware(ucode_raw);
5248         return 0;
5249
5250  err_pci_alloc:
5251         IWL_ERROR("failed to allocate pci memory\n");
5252         ret = -ENOMEM;
5253         iwl4965_dealloc_ucode_pci(priv);
5254
5255  err_release:
5256         release_firmware(ucode_raw);
5257
5258  error:
5259         return ret;
5260 }
5261
5262
5263 /**
5264  * iwl4965_set_ucode_ptrs - Set uCode address location
5265  *
5266  * Tell initialization uCode where to find runtime uCode.
5267  *
5268  * BSM registers initially contain pointers to initialization uCode.
5269  * We need to replace them to load runtime uCode inst and data,
5270  * and to save runtime data when powering down.
5271  */
5272 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5273 {
5274         dma_addr_t pinst;
5275         dma_addr_t pdata;
5276         int rc = 0;
5277         unsigned long flags;
5278
5279         /* bits 35:4 for 4965 */
5280         pinst = priv->ucode_code.p_addr >> 4;
5281         pdata = priv->ucode_data_backup.p_addr >> 4;
5282
5283         spin_lock_irqsave(&priv->lock, flags);
5284         rc = iwl_grab_nic_access(priv);
5285         if (rc) {
5286                 spin_unlock_irqrestore(&priv->lock, flags);
5287                 return rc;
5288         }
5289
5290         /* Tell bootstrap uCode where to find image to load */
5291         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5292         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5293         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5294                                  priv->ucode_data.len);
5295
5296         /* Inst bytecount must be last to set up, bit 31 signals uCode
5297          *   that all new ptr/size info is in place */
5298         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5299                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5300
5301         iwl_release_nic_access(priv);
5302
5303         spin_unlock_irqrestore(&priv->lock, flags);
5304
5305         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5306
5307         return rc;
5308 }
5309
5310 /**
5311  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5312  *
5313  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5314  *
5315  * The 4965 "initialize" ALIVE reply contains calibration data for:
5316  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
5317  *   (3945 does not contain this data).
5318  *
5319  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5320 */
5321 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5322 {
5323         /* Check alive response for "valid" sign from uCode */
5324         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5325                 /* We had an error bringing up the hardware, so take it
5326                  * all the way back down so we can try again */
5327                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5328                 goto restart;
5329         }
5330
5331         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5332          * This is a paranoid check, because we would not have gotten the
5333          * "initialize" alive if code weren't properly loaded.  */
5334         if (iwl4965_verify_ucode(priv)) {
5335                 /* Runtime instruction load was bad;
5336                  * take it all the way back down so we can try again */
5337                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5338                 goto restart;
5339         }
5340
5341         /* Calculate temperature */
5342         priv->temperature = iwl4965_get_temperature(priv);
5343
5344         /* Send pointers to protocol/runtime uCode image ... init code will
5345          * load and launch runtime uCode, which will send us another "Alive"
5346          * notification. */
5347         IWL_DEBUG_INFO("Initialization Alive received.\n");
5348         if (iwl4965_set_ucode_ptrs(priv)) {
5349                 /* Runtime instruction load won't happen;
5350                  * take it all the way back down so we can try again */
5351                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5352                 goto restart;
5353         }
5354         return;
5355
5356  restart:
5357         queue_work(priv->workqueue, &priv->restart);
5358 }
5359
5360
5361 /**
5362  * iwl4965_alive_start - called after REPLY_ALIVE notification received
5363  *                   from protocol/runtime uCode (initialization uCode's
5364  *                   Alive gets handled by iwl4965_init_alive_start()).
5365  */
5366 static void iwl4965_alive_start(struct iwl_priv *priv)
5367 {
5368         int ret = 0;
5369
5370         IWL_DEBUG_INFO("Runtime Alive received.\n");
5371
5372         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5373                 /* We had an error bringing up the hardware, so take it
5374                  * all the way back down so we can try again */
5375                 IWL_DEBUG_INFO("Alive failed.\n");
5376                 goto restart;
5377         }
5378
5379         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5380          * This is a paranoid check, because we would not have gotten the
5381          * "runtime" alive if code weren't properly loaded.  */
5382         if (iwl4965_verify_ucode(priv)) {
5383                 /* Runtime instruction load was bad;
5384                  * take it all the way back down so we can try again */
5385                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5386                 goto restart;
5387         }
5388
5389         iwlcore_clear_stations_table(priv);
5390
5391         ret = priv->cfg->ops->lib->alive_notify(priv);
5392         if (ret) {
5393                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5394                             ret);
5395                 goto restart;
5396         }
5397
5398         /* After the ALIVE response, we can send host commands to 4965 uCode */
5399         set_bit(STATUS_ALIVE, &priv->status);
5400
5401         /* Clear out the uCode error bit if it is set */
5402         clear_bit(STATUS_FW_ERROR, &priv->status);
5403
5404         if (iwl_is_rfkill(priv))
5405                 return;
5406
5407         ieee80211_start_queues(priv->hw);
5408
5409         priv->active_rate = priv->rates_mask;
5410         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5411
5412         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5413
5414         if (iwl_is_associated(priv)) {
5415                 struct iwl4965_rxon_cmd *active_rxon =
5416                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5417
5418                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5419                        sizeof(priv->staging_rxon));
5420                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5421         } else {
5422                 /* Initialize our rx_config data */
5423                 iwl4965_connection_init_rx_config(priv);
5424                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5425         }
5426
5427         /* Configure Bluetooth device coexistence support */
5428         iwl4965_send_bt_config(priv);
5429
5430         /* Configure the adapter for unassociated operation */
5431         iwl4965_commit_rxon(priv);
5432
5433         /* At this point, the NIC is initialized and operational */
5434         priv->notif_missed_beacons = 0;
5435
5436         iwl4965_rf_kill_ct_config(priv);
5437
5438         iwl_leds_register(priv);
5439
5440         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5441         set_bit(STATUS_READY, &priv->status);
5442         wake_up_interruptible(&priv->wait_command_queue);
5443
5444         if (priv->error_recovering)
5445                 iwl4965_error_recovery(priv);
5446
5447         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
5448         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
5449         return;
5450
5451  restart:
5452         queue_work(priv->workqueue, &priv->restart);
5453 }
5454
5455 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5456
5457 static void __iwl4965_down(struct iwl_priv *priv)
5458 {
5459         unsigned long flags;
5460         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5461         struct ieee80211_conf *conf = NULL;
5462
5463         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5464
5465         conf = ieee80211_get_hw_conf(priv->hw);
5466
5467         if (!exit_pending)
5468                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5469
5470         iwl_leds_unregister(priv);
5471
5472         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
5473
5474         iwlcore_clear_stations_table(priv);
5475
5476         /* Unblock any waiting calls */
5477         wake_up_interruptible_all(&priv->wait_command_queue);
5478
5479         /* Wipe out the EXIT_PENDING status bit if we are not actually
5480          * exiting the module */
5481         if (!exit_pending)
5482                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5483
5484         /* stop and reset the on-board processor */
5485         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5486
5487         /* tell the device to stop sending interrupts */
5488         spin_lock_irqsave(&priv->lock, flags);
5489         iwl4965_disable_interrupts(priv);
5490         spin_unlock_irqrestore(&priv->lock, flags);
5491         iwl_synchronize_irq(priv);
5492
5493         if (priv->mac80211_registered)
5494                 ieee80211_stop_queues(priv->hw);
5495
5496         /* If we have not previously called iwl4965_init() then
5497          * clear all bits but the RF Kill and SUSPEND bits and return */
5498         if (!iwl_is_init(priv)) {
5499                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5500                                         STATUS_RF_KILL_HW |
5501                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5502                                         STATUS_RF_KILL_SW |
5503                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5504                                         STATUS_GEO_CONFIGURED |
5505                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5506                                         STATUS_IN_SUSPEND;
5507                 goto exit;
5508         }
5509
5510         /* ...otherwise clear out all the status bits but the RF Kill and
5511          * SUSPEND bits and continue taking the NIC down. */
5512         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5513                                 STATUS_RF_KILL_HW |
5514                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5515                                 STATUS_RF_KILL_SW |
5516                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5517                                 STATUS_GEO_CONFIGURED |
5518                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5519                                 STATUS_IN_SUSPEND |
5520                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5521                                 STATUS_FW_ERROR;
5522
5523         spin_lock_irqsave(&priv->lock, flags);
5524         iwl_clear_bit(priv, CSR_GP_CNTRL,
5525                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5526         spin_unlock_irqrestore(&priv->lock, flags);
5527
5528         iwl4965_hw_txq_ctx_stop(priv);
5529         iwl4965_hw_rxq_stop(priv);
5530
5531         spin_lock_irqsave(&priv->lock, flags);
5532         if (!iwl_grab_nic_access(priv)) {
5533                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5534                                          APMG_CLK_VAL_DMA_CLK_RQT);
5535                 iwl_release_nic_access(priv);
5536         }
5537         spin_unlock_irqrestore(&priv->lock, flags);
5538
5539         udelay(5);
5540
5541         iwl4965_hw_nic_stop_master(priv);
5542         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5543         iwl4965_hw_nic_reset(priv);
5544
5545  exit:
5546         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5547
5548         if (priv->ibss_beacon)
5549                 dev_kfree_skb(priv->ibss_beacon);
5550         priv->ibss_beacon = NULL;
5551
5552         /* clear out any free frames */
5553         iwl4965_clear_free_frames(priv);
5554 }
5555
5556 static void iwl4965_down(struct iwl_priv *priv)
5557 {
5558         mutex_lock(&priv->mutex);
5559         __iwl4965_down(priv);
5560         mutex_unlock(&priv->mutex);
5561
5562         iwl4965_cancel_deferred_work(priv);
5563 }
5564
5565 #define MAX_HW_RESTARTS 5
5566
5567 static int __iwl4965_up(struct iwl_priv *priv)
5568 {
5569         int i;
5570         int ret;
5571
5572         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5573                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5574                 return -EIO;
5575         }
5576
5577         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5578                 IWL_WARNING("Radio disabled by SW RF kill (module "
5579                             "parameter)\n");
5580                 iwl_rfkill_set_hw_state(priv);
5581                 return -ENODEV;
5582         }
5583
5584         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5585                 IWL_ERROR("ucode not available for device bringup\n");
5586                 return -EIO;
5587         }
5588
5589         /* If platform's RF_KILL switch is NOT set to KILL */
5590         if (iwl_read32(priv, CSR_GP_CNTRL) &
5591                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5592                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5593         else {
5594                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5595                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5596                         iwl_rfkill_set_hw_state(priv);
5597                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5598                         return -ENODEV;
5599                 }
5600         }
5601
5602         iwl_rfkill_set_hw_state(priv);
5603         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5604
5605         ret = priv->cfg->ops->lib->hw_nic_init(priv);
5606         if (ret) {
5607                 IWL_ERROR("Unable to init nic\n");
5608                 return ret;
5609         }
5610
5611         /* make sure rfkill handshake bits are cleared */
5612         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5613         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5614                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5615
5616         /* clear (again), then enable host interrupts */
5617         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5618         iwl4965_enable_interrupts(priv);
5619
5620         /* really make sure rfkill handshake bits are cleared */
5621         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5622         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5623
5624         /* Copy original ucode data image from disk into backup cache.
5625          * This will be used to initialize the on-board processor's
5626          * data SRAM for a clean start when the runtime program first loads. */
5627         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5628                priv->ucode_data.len);
5629
5630         /* We return success when we resume from suspend and rf_kill is on. */
5631         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5632                 return 0;
5633
5634         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5635
5636                 iwlcore_clear_stations_table(priv);
5637
5638                 /* load bootstrap state machine,
5639                  * load bootstrap program into processor's memory,
5640                  * prepare to load the "initialize" uCode */
5641                 ret = priv->cfg->ops->lib->load_ucode(priv);
5642
5643                 if (ret) {
5644                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
5645                         continue;
5646                 }
5647
5648                 /* start card; "initialize" will load runtime ucode */
5649                 iwl4965_nic_start(priv);
5650
5651                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5652
5653                 return 0;
5654         }
5655
5656         set_bit(STATUS_EXIT_PENDING, &priv->status);
5657         __iwl4965_down(priv);
5658
5659         /* tried to restart and config the device for as long as our
5660          * patience could withstand */
5661         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5662         return -EIO;
5663 }
5664
5665
5666 /*****************************************************************************
5667  *
5668  * Workqueue callbacks
5669  *
5670  *****************************************************************************/
5671
5672 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5673 {
5674         struct iwl_priv *priv =
5675             container_of(data, struct iwl_priv, init_alive_start.work);
5676
5677         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5678                 return;
5679
5680         mutex_lock(&priv->mutex);
5681         iwl4965_init_alive_start(priv);
5682         mutex_unlock(&priv->mutex);
5683 }
5684
5685 static void iwl4965_bg_alive_start(struct work_struct *data)
5686 {
5687         struct iwl_priv *priv =
5688             container_of(data, struct iwl_priv, alive_start.work);
5689
5690         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5691                 return;
5692
5693         mutex_lock(&priv->mutex);
5694         iwl4965_alive_start(priv);
5695         mutex_unlock(&priv->mutex);
5696 }
5697
5698 static void iwl4965_bg_rf_kill(struct work_struct *work)
5699 {
5700         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5701
5702         wake_up_interruptible(&priv->wait_command_queue);
5703
5704         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5705                 return;
5706
5707         mutex_lock(&priv->mutex);
5708
5709         if (!iwl_is_rfkill(priv)) {
5710                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5711                           "HW and/or SW RF Kill no longer active, restarting "
5712                           "device\n");
5713                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5714                         queue_work(priv->workqueue, &priv->restart);
5715         } else {
5716                 /* make sure mac80211 stop sending Tx frame */
5717                 if (priv->mac80211_registered)
5718                         ieee80211_stop_queues(priv->hw);
5719
5720                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5721                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5722                                           "disabled by SW switch\n");
5723                 else
5724                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5725                                     "Kill switch must be turned off for "
5726                                     "wireless networking to work.\n");
5727         }
5728         iwl_rfkill_set_hw_state(priv);
5729
5730         mutex_unlock(&priv->mutex);
5731 }
5732
5733 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5734
5735 static void iwl4965_bg_scan_check(struct work_struct *data)
5736 {
5737         struct iwl_priv *priv =
5738             container_of(data, struct iwl_priv, scan_check.work);
5739
5740         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5741                 return;
5742
5743         mutex_lock(&priv->mutex);
5744         if (test_bit(STATUS_SCANNING, &priv->status) ||
5745             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5746                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5747                           "Scan completion watchdog resetting adapter (%dms)\n",
5748                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5749
5750                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5751                         iwl4965_send_scan_abort(priv);
5752         }
5753         mutex_unlock(&priv->mutex);
5754 }
5755
5756 static void iwl4965_bg_request_scan(struct work_struct *data)
5757 {
5758         struct iwl_priv *priv =
5759             container_of(data, struct iwl_priv, request_scan);
5760         struct iwl_host_cmd cmd = {
5761                 .id = REPLY_SCAN_CMD,
5762                 .len = sizeof(struct iwl4965_scan_cmd),
5763                 .meta.flags = CMD_SIZE_HUGE,
5764         };
5765         struct iwl4965_scan_cmd *scan;
5766         struct ieee80211_conf *conf = NULL;
5767         u16 cmd_len;
5768         enum ieee80211_band band;
5769         u8 direct_mask;
5770         int ret = 0;
5771
5772         conf = ieee80211_get_hw_conf(priv->hw);
5773
5774         mutex_lock(&priv->mutex);
5775
5776         if (!iwl_is_ready(priv)) {
5777                 IWL_WARNING("request scan called when driver not ready.\n");
5778                 goto done;
5779         }
5780
5781         /* Make sure the scan wasn't cancelled before this queued work
5782          * was given the chance to run... */
5783         if (!test_bit(STATUS_SCANNING, &priv->status))
5784                 goto done;
5785
5786         /* This should never be called or scheduled if there is currently
5787          * a scan active in the hardware. */
5788         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5789                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5790                                "Ignoring second request.\n");
5791                 ret = -EIO;
5792                 goto done;
5793         }
5794
5795         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5796                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5797                 goto done;
5798         }
5799
5800         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5801                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
5802                 goto done;
5803         }
5804
5805         if (iwl_is_rfkill(priv)) {
5806                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5807                 goto done;
5808         }
5809
5810         if (!test_bit(STATUS_READY, &priv->status)) {
5811                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
5812                 goto done;
5813         }
5814
5815         if (!priv->scan_bands) {
5816                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5817                 goto done;
5818         }
5819
5820         if (!priv->scan) {
5821                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
5822                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5823                 if (!priv->scan) {
5824                         ret = -ENOMEM;
5825                         goto done;
5826                 }
5827         }
5828         scan = priv->scan;
5829         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
5830
5831         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5832         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5833
5834         if (iwl_is_associated(priv)) {
5835                 u16 interval = 0;
5836                 u32 extra;
5837                 u32 suspend_time = 100;
5838                 u32 scan_suspend_time = 100;
5839                 unsigned long flags;
5840
5841                 IWL_DEBUG_INFO("Scanning while associated...\n");
5842
5843                 spin_lock_irqsave(&priv->lock, flags);
5844                 interval = priv->beacon_int;
5845                 spin_unlock_irqrestore(&priv->lock, flags);
5846
5847                 scan->suspend_time = 0;
5848                 scan->max_out_time = cpu_to_le32(200 * 1024);
5849                 if (!interval)
5850                         interval = suspend_time;
5851
5852                 extra = (suspend_time / interval) << 22;
5853                 scan_suspend_time = (extra |
5854                     ((suspend_time % interval) * 1024));
5855                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5856                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5857                                scan_suspend_time, interval);
5858         }
5859
5860         /* We should add the ability for user to lock to PASSIVE ONLY */
5861         if (priv->one_direct_scan) {
5862                 IWL_DEBUG_SCAN
5863                     ("Kicking off one direct scan for '%s'\n",
5864                      iwl4965_escape_essid(priv->direct_ssid,
5865                                       priv->direct_ssid_len));
5866                 scan->direct_scan[0].id = WLAN_EID_SSID;
5867                 scan->direct_scan[0].len = priv->direct_ssid_len;
5868                 memcpy(scan->direct_scan[0].ssid,
5869                        priv->direct_ssid, priv->direct_ssid_len);
5870                 direct_mask = 1;
5871         } else if (!iwl_is_associated(priv) && priv->essid_len) {
5872                 scan->direct_scan[0].id = WLAN_EID_SSID;
5873                 scan->direct_scan[0].len = priv->essid_len;
5874                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
5875                 direct_mask = 1;
5876         } else {
5877                 direct_mask = 0;
5878         }
5879
5880         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5881         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
5882         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5883
5884
5885         switch (priv->scan_bands) {
5886         case 2:
5887                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5888                 scan->tx_cmd.rate_n_flags =
5889                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
5890                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
5891
5892                 scan->good_CRC_th = 0;
5893                 band = IEEE80211_BAND_2GHZ;
5894                 break;
5895
5896         case 1:
5897                 scan->tx_cmd.rate_n_flags =
5898                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
5899                                 RATE_MCS_ANT_B_MSK);
5900                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5901                 band = IEEE80211_BAND_5GHZ;
5902                 break;
5903
5904         default:
5905                 IWL_WARNING("Invalid scan band count\n");
5906                 goto done;
5907         }
5908
5909         /* We don't build a direct scan probe request; the uCode will do
5910          * that based on the direct_mask added to each channel entry */
5911         cmd_len = iwl4965_fill_probe_req(priv, band,
5912                                         (struct ieee80211_mgmt *)scan->data,
5913                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
5914
5915         scan->tx_cmd.len = cpu_to_le16(cmd_len);
5916         /* select Rx chains */
5917
5918         /* Force use of chains B and C (0x6) for scan Rx.
5919          * Avoid A (0x1) because of its off-channel reception on A-band.
5920          * MIMO is not used here, but value is required to make uCode happy. */
5921         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
5922                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
5923                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
5924                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
5925
5926         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
5927                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5928
5929         if (direct_mask) {
5930                 IWL_DEBUG_SCAN
5931                     ("Initiating direct scan for %s.\n",
5932                      iwl4965_escape_essid(priv->essid, priv->essid_len));
5933                 scan->channel_count =
5934                         iwl4965_get_channels_for_scan(
5935                                 priv, band, 1, /* active */
5936                                 direct_mask,
5937                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5938         } else {
5939                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
5940                 scan->channel_count =
5941                         iwl4965_get_channels_for_scan(
5942                                 priv, band, 0, /* passive */
5943                                 direct_mask,
5944                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5945         }
5946
5947         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5948             scan->channel_count * sizeof(struct iwl4965_scan_channel);
5949         cmd.data = scan;
5950         scan->len = cpu_to_le16(cmd.len);
5951
5952         set_bit(STATUS_SCAN_HW, &priv->status);
5953         ret = iwl_send_cmd_sync(priv, &cmd);
5954         if (ret)
5955                 goto done;
5956
5957         queue_delayed_work(priv->workqueue, &priv->scan_check,
5958                            IWL_SCAN_CHECK_WATCHDOG);
5959
5960         mutex_unlock(&priv->mutex);
5961         return;
5962
5963  done:
5964         /* inform mac80211 scan aborted */
5965         queue_work(priv->workqueue, &priv->scan_completed);
5966         mutex_unlock(&priv->mutex);
5967 }
5968
5969 static void iwl4965_bg_up(struct work_struct *data)
5970 {
5971         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
5972
5973         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5974                 return;
5975
5976         mutex_lock(&priv->mutex);
5977         __iwl4965_up(priv);
5978         mutex_unlock(&priv->mutex);
5979 }
5980
5981 static void iwl4965_bg_restart(struct work_struct *data)
5982 {
5983         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
5984
5985         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5986                 return;
5987
5988         iwl4965_down(priv);
5989         queue_work(priv->workqueue, &priv->up);
5990 }
5991
5992 static void iwl4965_bg_rx_replenish(struct work_struct *data)
5993 {
5994         struct iwl_priv *priv =
5995             container_of(data, struct iwl_priv, rx_replenish);
5996
5997         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5998                 return;
5999
6000         mutex_lock(&priv->mutex);
6001         iwl4965_rx_replenish(priv);
6002         mutex_unlock(&priv->mutex);
6003 }
6004
6005 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6006
6007 static void iwl4965_post_associate(struct iwl_priv *priv)
6008 {
6009         struct ieee80211_conf *conf = NULL;
6010         int ret = 0;
6011         DECLARE_MAC_BUF(mac);
6012
6013         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6014                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6015                 return;
6016         }
6017
6018         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6019                         priv->assoc_id,
6020                         print_mac(mac, priv->active_rxon.bssid_addr));
6021
6022
6023         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6024                 return;
6025
6026
6027         if (!priv->vif || !priv->is_open)
6028                 return;
6029
6030         iwl4965_scan_cancel_timeout(priv, 200);
6031
6032         conf = ieee80211_get_hw_conf(priv->hw);
6033
6034         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6035         iwl4965_commit_rxon(priv);
6036
6037         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6038         iwl4965_setup_rxon_timing(priv);
6039         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6040                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6041         if (ret)
6042                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6043                             "Attempting to continue.\n");
6044
6045         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6046
6047 #ifdef CONFIG_IWL4965_HT
6048         if (priv->current_ht_config.is_ht)
6049                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6050 #endif /* CONFIG_IWL4965_HT*/
6051         iwl4965_set_rxon_chain(priv);
6052         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6053
6054         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6055                         priv->assoc_id, priv->beacon_int);
6056
6057         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6058                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6059         else
6060                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6061
6062         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6063                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6064                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6065                 else
6066                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6067
6068                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6069                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6070
6071         }
6072
6073         iwl4965_commit_rxon(priv);
6074
6075         switch (priv->iw_mode) {
6076         case IEEE80211_IF_TYPE_STA:
6077                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6078                 break;
6079
6080         case IEEE80211_IF_TYPE_IBSS:
6081
6082                 /* clear out the station table */
6083                 iwlcore_clear_stations_table(priv);
6084
6085                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6086                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6087                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6088                 iwl4965_send_beacon_cmd(priv);
6089
6090                 break;
6091
6092         default:
6093                 IWL_ERROR("%s Should not be called in %d mode\n",
6094                                 __FUNCTION__, priv->iw_mode);
6095                 break;
6096         }
6097
6098         iwl4965_sequence_reset(priv);
6099
6100 #ifdef CONFIG_IWL4965_SENSITIVITY
6101         /* Enable Rx differential gain and sensitivity calibrations */
6102         iwl4965_chain_noise_reset(priv);
6103         priv->start_calib = 1;
6104 #endif /* CONFIG_IWL4965_SENSITIVITY */
6105
6106         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6107                 priv->assoc_station_added = 1;
6108
6109         iwl4965_activate_qos(priv, 0);
6110
6111         /* we have just associated, don't start scan too early */
6112         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6113 }
6114
6115
6116 static void iwl4965_bg_post_associate(struct work_struct *data)
6117 {
6118         struct iwl_priv *priv = container_of(data, struct iwl_priv,
6119                                              post_associate.work);
6120
6121         mutex_lock(&priv->mutex);
6122         iwl4965_post_associate(priv);
6123         mutex_unlock(&priv->mutex);
6124
6125 }
6126
6127 static void iwl4965_bg_abort_scan(struct work_struct *work)
6128 {
6129         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6130
6131         if (!iwl_is_ready(priv))
6132                 return;
6133
6134         mutex_lock(&priv->mutex);
6135
6136         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6137         iwl4965_send_scan_abort(priv);
6138
6139         mutex_unlock(&priv->mutex);
6140 }
6141
6142 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6143
6144 static void iwl4965_bg_scan_completed(struct work_struct *work)
6145 {
6146         struct iwl_priv *priv =
6147             container_of(work, struct iwl_priv, scan_completed);
6148
6149         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6150
6151         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6152                 return;
6153
6154         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6155                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6156
6157         ieee80211_scan_completed(priv->hw);
6158
6159         /* Since setting the TXPOWER may have been deferred while
6160          * performing the scan, fire one off */
6161         mutex_lock(&priv->mutex);
6162         iwl4965_hw_reg_send_txpower(priv);
6163         mutex_unlock(&priv->mutex);
6164 }
6165
6166 /*****************************************************************************
6167  *
6168  * mac80211 entry point functions
6169  *
6170  *****************************************************************************/
6171
6172 #define UCODE_READY_TIMEOUT     (2 * HZ)
6173
6174 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6175 {
6176         struct iwl_priv *priv = hw->priv;
6177         int ret;
6178
6179         IWL_DEBUG_MAC80211("enter\n");
6180
6181         if (pci_enable_device(priv->pci_dev)) {
6182                 IWL_ERROR("Fail to pci_enable_device\n");
6183                 return -ENODEV;
6184         }
6185         pci_restore_state(priv->pci_dev);
6186         pci_enable_msi(priv->pci_dev);
6187
6188         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6189                           DRV_NAME, priv);
6190         if (ret) {
6191                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6192                 goto out_disable_msi;
6193         }
6194
6195         /* we should be verifying the device is ready to be opened */
6196         mutex_lock(&priv->mutex);
6197
6198         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6199         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6200          * ucode filename and max sizes are card-specific. */
6201
6202         if (!priv->ucode_code.len) {
6203                 ret = iwl4965_read_ucode(priv);
6204                 if (ret) {
6205                         IWL_ERROR("Could not read microcode: %d\n", ret);
6206                         mutex_unlock(&priv->mutex);
6207                         goto out_release_irq;
6208                 }
6209         }
6210
6211         ret = __iwl4965_up(priv);
6212
6213         mutex_unlock(&priv->mutex);
6214
6215         if (ret)
6216                 goto out_release_irq;
6217
6218         IWL_DEBUG_INFO("Start UP work done.\n");
6219
6220         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6221                 return 0;
6222
6223         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6224          * mac80211 will not be run successfully. */
6225         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6226                         test_bit(STATUS_READY, &priv->status),
6227                         UCODE_READY_TIMEOUT);
6228         if (!ret) {
6229                 if (!test_bit(STATUS_READY, &priv->status)) {
6230                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6231                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6232                         ret = -ETIMEDOUT;
6233                         goto out_release_irq;
6234                 }
6235         }
6236
6237         priv->is_open = 1;
6238         IWL_DEBUG_MAC80211("leave\n");
6239         return 0;
6240
6241 out_release_irq:
6242         free_irq(priv->pci_dev->irq, priv);
6243 out_disable_msi:
6244         pci_disable_msi(priv->pci_dev);
6245         pci_disable_device(priv->pci_dev);
6246         priv->is_open = 0;
6247         IWL_DEBUG_MAC80211("leave - failed\n");
6248         return ret;
6249 }
6250
6251 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6252 {
6253         struct iwl_priv *priv = hw->priv;
6254
6255         IWL_DEBUG_MAC80211("enter\n");
6256
6257         if (!priv->is_open) {
6258                 IWL_DEBUG_MAC80211("leave - skip\n");
6259                 return;
6260         }
6261
6262         priv->is_open = 0;
6263
6264         if (iwl_is_ready_rf(priv)) {
6265                 /* stop mac, cancel any scan request and clear
6266                  * RXON_FILTER_ASSOC_MSK BIT
6267                  */
6268                 mutex_lock(&priv->mutex);
6269                 iwl4965_scan_cancel_timeout(priv, 100);
6270                 cancel_delayed_work(&priv->post_associate);
6271                 mutex_unlock(&priv->mutex);
6272         }
6273
6274         iwl4965_down(priv);
6275
6276         flush_workqueue(priv->workqueue);
6277         free_irq(priv->pci_dev->irq, priv);
6278         pci_disable_msi(priv->pci_dev);
6279         pci_save_state(priv->pci_dev);
6280         pci_disable_device(priv->pci_dev);
6281
6282         IWL_DEBUG_MAC80211("leave\n");
6283 }
6284
6285 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6286                       struct ieee80211_tx_control *ctl)
6287 {
6288         struct iwl_priv *priv = hw->priv;
6289
6290         IWL_DEBUG_MAC80211("enter\n");
6291
6292         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6293                 IWL_DEBUG_MAC80211("leave - monitor\n");
6294                 return -1;
6295         }
6296
6297         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6298                      ctl->tx_rate->bitrate);
6299
6300         if (iwl4965_tx_skb(priv, skb, ctl))
6301                 dev_kfree_skb_any(skb);
6302
6303         IWL_DEBUG_MAC80211("leave\n");
6304         return 0;
6305 }
6306
6307 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6308                                  struct ieee80211_if_init_conf *conf)
6309 {
6310         struct iwl_priv *priv = hw->priv;
6311         unsigned long flags;
6312         DECLARE_MAC_BUF(mac);
6313
6314         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6315
6316         if (priv->vif) {
6317                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6318                 return -EOPNOTSUPP;
6319         }
6320
6321         spin_lock_irqsave(&priv->lock, flags);
6322         priv->vif = conf->vif;
6323
6324         spin_unlock_irqrestore(&priv->lock, flags);
6325
6326         mutex_lock(&priv->mutex);
6327
6328         if (conf->mac_addr) {
6329                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6330                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6331         }
6332
6333         if (iwl_is_ready(priv))
6334                 iwl4965_set_mode(priv, conf->type);
6335
6336         mutex_unlock(&priv->mutex);
6337
6338         IWL_DEBUG_MAC80211("leave\n");
6339         return 0;
6340 }
6341
6342 /**
6343  * iwl4965_mac_config - mac80211 config callback
6344  *
6345  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6346  * be set inappropriately and the driver currently sets the hardware up to
6347  * use it whenever needed.
6348  */
6349 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6350 {
6351         struct iwl_priv *priv = hw->priv;
6352         const struct iwl_channel_info *ch_info;
6353         unsigned long flags;
6354         int ret = 0;
6355
6356         mutex_lock(&priv->mutex);
6357         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6358
6359         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6360
6361         if (!iwl_is_ready(priv)) {
6362                 IWL_DEBUG_MAC80211("leave - not ready\n");
6363                 ret = -EIO;
6364                 goto out;
6365         }
6366
6367         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
6368                      test_bit(STATUS_SCANNING, &priv->status))) {
6369                 IWL_DEBUG_MAC80211("leave - scanning\n");
6370                 set_bit(STATUS_CONF_PENDING, &priv->status);
6371                 mutex_unlock(&priv->mutex);
6372                 return 0;
6373         }
6374
6375         spin_lock_irqsave(&priv->lock, flags);
6376
6377         ch_info = iwl_get_channel_info(priv, conf->channel->band,
6378                         ieee80211_frequency_to_channel(conf->channel->center_freq));
6379         if (!is_channel_valid(ch_info)) {
6380                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6381                 spin_unlock_irqrestore(&priv->lock, flags);
6382                 ret = -EINVAL;
6383                 goto out;
6384         }
6385
6386 #ifdef CONFIG_IWL4965_HT
6387         /* if we are switching from ht to 2.4 clear flags
6388          * from any ht related info since 2.4 does not
6389          * support ht */
6390         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6391 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6392             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6393 #endif
6394         )
6395                 priv->staging_rxon.flags = 0;
6396 #endif /* CONFIG_IWL4965_HT */
6397
6398         iwlcore_set_rxon_channel(priv, conf->channel->band,
6399                 ieee80211_frequency_to_channel(conf->channel->center_freq));
6400
6401         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6402
6403         /* The list of supported rates and rate mask can be different
6404          * for each band; since the band may have changed, reset
6405          * the rate mask to what mac80211 lists */
6406         iwl4965_set_rate(priv);
6407
6408         spin_unlock_irqrestore(&priv->lock, flags);
6409
6410 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6411         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6412                 iwl4965_hw_channel_switch(priv, conf->channel);
6413                 goto out;
6414         }
6415 #endif
6416
6417         if (priv->cfg->ops->lib->radio_kill_sw)
6418                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
6419
6420         if (!conf->radio_enabled) {
6421                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6422                 goto out;
6423         }
6424
6425         if (iwl_is_rfkill(priv)) {
6426                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6427                 ret = -EIO;
6428                 goto out;
6429         }
6430
6431         iwl4965_set_rate(priv);
6432
6433         if (memcmp(&priv->active_rxon,
6434                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6435                 iwl4965_commit_rxon(priv);
6436         else
6437                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6438
6439         IWL_DEBUG_MAC80211("leave\n");
6440
6441 out:
6442         clear_bit(STATUS_CONF_PENDING, &priv->status);
6443         mutex_unlock(&priv->mutex);
6444         return ret;
6445 }
6446
6447 static void iwl4965_config_ap(struct iwl_priv *priv)
6448 {
6449         int ret = 0;
6450
6451         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6452                 return;
6453
6454         /* The following should be done only at AP bring up */
6455         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6456
6457                 /* RXON - unassoc (to set timing command) */
6458                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6459                 iwl4965_commit_rxon(priv);
6460
6461                 /* RXON Timing */
6462                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6463                 iwl4965_setup_rxon_timing(priv);
6464                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6465                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6466                 if (ret)
6467                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6468                                         "Attempting to continue.\n");
6469
6470                 iwl4965_set_rxon_chain(priv);
6471
6472                 /* FIXME: what should be the assoc_id for AP? */
6473                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6474                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6475                         priv->staging_rxon.flags |=
6476                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6477                 else
6478                         priv->staging_rxon.flags &=
6479                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6480
6481                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6482                         if (priv->assoc_capability &
6483                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6484                                 priv->staging_rxon.flags |=
6485                                         RXON_FLG_SHORT_SLOT_MSK;
6486                         else
6487                                 priv->staging_rxon.flags &=
6488                                         ~RXON_FLG_SHORT_SLOT_MSK;
6489
6490                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6491                                 priv->staging_rxon.flags &=
6492                                         ~RXON_FLG_SHORT_SLOT_MSK;
6493                 }
6494                 /* restore RXON assoc */
6495                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6496                 iwl4965_commit_rxon(priv);
6497                 iwl4965_activate_qos(priv, 1);
6498                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6499         }
6500         iwl4965_send_beacon_cmd(priv);
6501
6502         /* FIXME - we need to add code here to detect a totally new
6503          * configuration, reset the AP, unassoc, rxon timing, assoc,
6504          * clear sta table, add BCAST sta... */
6505 }
6506
6507 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6508                                         struct ieee80211_vif *vif,
6509                                     struct ieee80211_if_conf *conf)
6510 {
6511         struct iwl_priv *priv = hw->priv;
6512         DECLARE_MAC_BUF(mac);
6513         unsigned long flags;
6514         int rc;
6515
6516         if (conf == NULL)
6517                 return -EIO;
6518
6519         if (priv->vif != vif) {
6520                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6521                 mutex_unlock(&priv->mutex);
6522                 return 0;
6523         }
6524
6525         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6526             (!conf->beacon || !conf->ssid_len)) {
6527                 IWL_DEBUG_MAC80211
6528                     ("Leaving in AP mode because HostAPD is not ready.\n");
6529                 return 0;
6530         }
6531
6532         if (!iwl_is_alive(priv))
6533                 return -EAGAIN;
6534
6535         mutex_lock(&priv->mutex);
6536
6537         if (conf->bssid)
6538                 IWL_DEBUG_MAC80211("bssid: %s\n",
6539                                    print_mac(mac, conf->bssid));
6540
6541 /*
6542  * very dubious code was here; the probe filtering flag is never set:
6543  *
6544         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6545             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6546  */
6547
6548         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6549                 if (!conf->bssid) {
6550                         conf->bssid = priv->mac_addr;
6551                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6552                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6553                                            print_mac(mac, conf->bssid));
6554                 }
6555                 if (priv->ibss_beacon)
6556                         dev_kfree_skb(priv->ibss_beacon);
6557
6558                 priv->ibss_beacon = conf->beacon;
6559         }
6560
6561         if (iwl_is_rfkill(priv))
6562                 goto done;
6563
6564         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6565             !is_multicast_ether_addr(conf->bssid)) {
6566                 /* If there is currently a HW scan going on in the background
6567                  * then we need to cancel it else the RXON below will fail. */
6568                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6569                         IWL_WARNING("Aborted scan still in progress "
6570                                     "after 100ms\n");
6571                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6572                         mutex_unlock(&priv->mutex);
6573                         return -EAGAIN;
6574                 }
6575                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6576
6577                 /* TODO: Audit driver for usage of these members and see
6578                  * if mac80211 deprecates them (priv->bssid looks like it
6579                  * shouldn't be there, but I haven't scanned the IBSS code
6580                  * to verify) - jpk */
6581                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6582
6583                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6584                         iwl4965_config_ap(priv);
6585                 else {
6586                         rc = iwl4965_commit_rxon(priv);
6587                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6588                                 iwl4965_rxon_add_station(
6589                                         priv, priv->active_rxon.bssid_addr, 1);
6590                 }
6591
6592         } else {
6593                 iwl4965_scan_cancel_timeout(priv, 100);
6594                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6595                 iwl4965_commit_rxon(priv);
6596         }
6597
6598  done:
6599         spin_lock_irqsave(&priv->lock, flags);
6600         if (!conf->ssid_len)
6601                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6602         else
6603                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6604
6605         priv->essid_len = conf->ssid_len;
6606         spin_unlock_irqrestore(&priv->lock, flags);
6607
6608         IWL_DEBUG_MAC80211("leave\n");
6609         mutex_unlock(&priv->mutex);
6610
6611         return 0;
6612 }
6613
6614 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6615                                  unsigned int changed_flags,
6616                                  unsigned int *total_flags,
6617                                  int mc_count, struct dev_addr_list *mc_list)
6618 {
6619         /*
6620          * XXX: dummy
6621          * see also iwl4965_connection_init_rx_config
6622          */
6623         *total_flags = 0;
6624 }
6625
6626 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6627                                      struct ieee80211_if_init_conf *conf)
6628 {
6629         struct iwl_priv *priv = hw->priv;
6630
6631         IWL_DEBUG_MAC80211("enter\n");
6632
6633         mutex_lock(&priv->mutex);
6634
6635         if (iwl_is_ready_rf(priv)) {
6636                 iwl4965_scan_cancel_timeout(priv, 100);
6637                 cancel_delayed_work(&priv->post_associate);
6638                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6639                 iwl4965_commit_rxon(priv);
6640         }
6641         if (priv->vif == conf->vif) {
6642                 priv->vif = NULL;
6643                 memset(priv->bssid, 0, ETH_ALEN);
6644                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6645                 priv->essid_len = 0;
6646         }
6647         mutex_unlock(&priv->mutex);
6648
6649         IWL_DEBUG_MAC80211("leave\n");
6650
6651 }
6652
6653
6654 #ifdef CONFIG_IWL4965_HT
6655 static void iwl4965_ht_conf(struct iwl_priv *priv,
6656                             struct ieee80211_bss_conf *bss_conf)
6657 {
6658         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
6659         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
6660         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
6661
6662         IWL_DEBUG_MAC80211("enter: \n");
6663
6664         iwl_conf->is_ht = bss_conf->assoc_ht;
6665
6666         if (!iwl_conf->is_ht)
6667                 return;
6668
6669         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6670
6671         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
6672                 iwl_conf->sgf |= 0x1;
6673         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
6674                 iwl_conf->sgf |= 0x2;
6675
6676         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
6677         iwl_conf->max_amsdu_size =
6678                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
6679
6680         iwl_conf->supported_chan_width =
6681                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
6682         iwl_conf->extension_chan_offset =
6683                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
6684         /* If no above or below channel supplied disable FAT channel */
6685         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
6686             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
6687                 iwl_conf->supported_chan_width = 0;
6688
6689         iwl_conf->tx_mimo_ps_mode =
6690                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6691         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
6692
6693         iwl_conf->control_channel = ht_bss_conf->primary_channel;
6694         iwl_conf->tx_chan_width =
6695                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
6696         iwl_conf->ht_protection =
6697                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
6698         iwl_conf->non_GF_STA_present =
6699                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
6700
6701         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
6702         IWL_DEBUG_MAC80211("leave\n");
6703 }
6704 #else
6705 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
6706                                    struct ieee80211_bss_conf *bss_conf)
6707 {
6708 }
6709 #endif
6710
6711 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6712 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6713                                      struct ieee80211_vif *vif,
6714                                      struct ieee80211_bss_conf *bss_conf,
6715                                      u32 changes)
6716 {
6717         struct iwl_priv *priv = hw->priv;
6718
6719         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6720
6721         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6722                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6723                                    bss_conf->use_short_preamble);
6724                 if (bss_conf->use_short_preamble)
6725                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6726                 else
6727                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6728         }
6729
6730         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6731                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6732                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6733                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6734                 else
6735                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6736         }
6737
6738         if (changes & BSS_CHANGED_HT) {
6739                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
6740                 iwl4965_ht_conf(priv, bss_conf);
6741                 iwl4965_set_rxon_chain(priv);
6742         }
6743
6744         if (changes & BSS_CHANGED_ASSOC) {
6745                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6746                 /* This should never happen as this function should
6747                  * never be called from interrupt context. */
6748                 if (WARN_ON_ONCE(in_interrupt()))
6749                         return;
6750                 if (bss_conf->assoc) {
6751                         priv->assoc_id = bss_conf->aid;
6752                         priv->beacon_int = bss_conf->beacon_int;
6753                         priv->timestamp = bss_conf->timestamp;
6754                         priv->assoc_capability = bss_conf->assoc_capability;
6755                         priv->next_scan_jiffies = jiffies +
6756                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6757                         mutex_lock(&priv->mutex);
6758                         iwl4965_post_associate(priv);
6759                         mutex_unlock(&priv->mutex);
6760                 } else {
6761                         priv->assoc_id = 0;
6762                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6763                 }
6764         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
6765                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6766                         iwl4965_send_rxon_assoc(priv);
6767         }
6768
6769 }
6770
6771 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6772 {
6773         int rc = 0;
6774         unsigned long flags;
6775         struct iwl_priv *priv = hw->priv;
6776
6777         IWL_DEBUG_MAC80211("enter\n");
6778
6779         mutex_lock(&priv->mutex);
6780         spin_lock_irqsave(&priv->lock, flags);
6781
6782         if (!iwl_is_ready_rf(priv)) {
6783                 rc = -EIO;
6784                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6785                 goto out_unlock;
6786         }
6787
6788         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
6789                 rc = -EIO;
6790                 IWL_ERROR("ERROR: APs don't scan\n");
6791                 goto out_unlock;
6792         }
6793
6794         /* we don't schedule scan within next_scan_jiffies period */
6795         if (priv->next_scan_jiffies &&
6796                         time_after(priv->next_scan_jiffies, jiffies)) {
6797                 rc = -EAGAIN;
6798                 goto out_unlock;
6799         }
6800         /* if we just finished scan ask for delay */
6801         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6802                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
6803                 rc = -EAGAIN;
6804                 goto out_unlock;
6805         }
6806         if (len) {
6807                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6808                                iwl4965_escape_essid(ssid, len), (int)len);
6809
6810                 priv->one_direct_scan = 1;
6811                 priv->direct_ssid_len = (u8)
6812                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6813                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6814         } else
6815                 priv->one_direct_scan = 0;
6816
6817         rc = iwl4965_scan_initiate(priv);
6818
6819         IWL_DEBUG_MAC80211("leave\n");
6820
6821 out_unlock:
6822         spin_unlock_irqrestore(&priv->lock, flags);
6823         mutex_unlock(&priv->mutex);
6824
6825         return rc;
6826 }
6827
6828 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
6829                         struct ieee80211_key_conf *keyconf, const u8 *addr,
6830                         u32 iv32, u16 *phase1key)
6831 {
6832         struct iwl_priv *priv = hw->priv;
6833         u8 sta_id = IWL_INVALID_STATION;
6834         unsigned long flags;
6835         __le16 key_flags = 0;
6836         int i;
6837         DECLARE_MAC_BUF(mac);
6838
6839         IWL_DEBUG_MAC80211("enter\n");
6840
6841         sta_id = iwl4965_hw_find_station(priv, addr);
6842         if (sta_id == IWL_INVALID_STATION) {
6843                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6844                                    print_mac(mac, addr));
6845                 return;
6846         }
6847
6848         iwl4965_scan_cancel_timeout(priv, 100);
6849
6850         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
6851         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
6852         key_flags &= ~STA_KEY_FLG_INVALID;
6853
6854         if (sta_id == priv->hw_setting.bcast_sta_id)
6855                 key_flags |= STA_KEY_MULTICAST_MSK;
6856
6857         spin_lock_irqsave(&priv->sta_lock, flags);
6858
6859         priv->stations[sta_id].sta.key.key_offset =
6860                                 iwl_get_free_ucode_key_index(priv);
6861         priv->stations[sta_id].sta.key.key_flags = key_flags;
6862         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
6863
6864         for (i = 0; i < 5; i++)
6865                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
6866                         cpu_to_le16(phase1key[i]);
6867
6868         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
6869         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
6870
6871         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
6872
6873         spin_unlock_irqrestore(&priv->sta_lock, flags);
6874
6875         IWL_DEBUG_MAC80211("leave\n");
6876 }
6877
6878 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6879                            const u8 *local_addr, const u8 *addr,
6880                            struct ieee80211_key_conf *key)
6881 {
6882         struct iwl_priv *priv = hw->priv;
6883         DECLARE_MAC_BUF(mac);
6884         int ret = 0;
6885         u8 sta_id = IWL_INVALID_STATION;
6886         u8 is_default_wep_key = 0;
6887
6888         IWL_DEBUG_MAC80211("enter\n");
6889
6890         if (!priv->cfg->mod_params->hw_crypto) {
6891                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6892                 return -EOPNOTSUPP;
6893         }
6894
6895         if (is_zero_ether_addr(addr))
6896                 /* only support pairwise keys */
6897                 return -EOPNOTSUPP;
6898
6899         sta_id = iwl4965_hw_find_station(priv, addr);
6900         if (sta_id == IWL_INVALID_STATION) {
6901                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6902                                    print_mac(mac, addr));
6903                 return -EINVAL;
6904
6905         }
6906
6907         mutex_lock(&priv->mutex);
6908         iwl4965_scan_cancel_timeout(priv, 100);
6909         mutex_unlock(&priv->mutex);
6910
6911         /* If we are getting WEP group key and we didn't receive any key mapping
6912          * so far, we are in legacy wep mode (group key only), otherwise we are
6913          * in 1X mode.
6914          * In legacy wep mode, we use another host command to the uCode */
6915         if (key->alg == ALG_WEP && sta_id == priv->hw_setting.bcast_sta_id &&
6916                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
6917                 if (cmd == SET_KEY)
6918                         is_default_wep_key = !priv->key_mapping_key;
6919                 else
6920                         is_default_wep_key = priv->default_wep_key;
6921         }
6922
6923         switch (cmd) {
6924         case SET_KEY:
6925                 if (is_default_wep_key)
6926                         ret = iwl_set_default_wep_key(priv, key);
6927                 else
6928                         ret = iwl_set_dynamic_key(priv, key, sta_id);
6929
6930                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
6931                 break;
6932         case DISABLE_KEY:
6933                 if (is_default_wep_key)
6934                         ret = iwl_remove_default_wep_key(priv, key);
6935                 else
6936                         ret = iwl_remove_dynamic_key(priv, sta_id);
6937
6938                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6939                 break;
6940         default:
6941                 ret = -EINVAL;
6942         }
6943
6944         IWL_DEBUG_MAC80211("leave\n");
6945
6946         return ret;
6947 }
6948
6949 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
6950                            const struct ieee80211_tx_queue_params *params)
6951 {
6952         struct iwl_priv *priv = hw->priv;
6953         unsigned long flags;
6954         int q;
6955
6956         IWL_DEBUG_MAC80211("enter\n");
6957
6958         if (!iwl_is_ready_rf(priv)) {
6959                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6960                 return -EIO;
6961         }
6962
6963         if (queue >= AC_NUM) {
6964                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
6965                 return 0;
6966         }
6967
6968         if (!priv->qos_data.qos_enable) {
6969                 priv->qos_data.qos_active = 0;
6970                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
6971                 return 0;
6972         }
6973         q = AC_NUM - 1 - queue;
6974
6975         spin_lock_irqsave(&priv->lock, flags);
6976
6977         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
6978         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
6979         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
6980         priv->qos_data.def_qos_parm.ac[q].edca_txop =
6981                         cpu_to_le16((params->txop * 32));
6982
6983         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
6984         priv->qos_data.qos_active = 1;
6985
6986         spin_unlock_irqrestore(&priv->lock, flags);
6987
6988         mutex_lock(&priv->mutex);
6989         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6990                 iwl4965_activate_qos(priv, 1);
6991         else if (priv->assoc_id && iwl_is_associated(priv))
6992                 iwl4965_activate_qos(priv, 0);
6993
6994         mutex_unlock(&priv->mutex);
6995
6996         IWL_DEBUG_MAC80211("leave\n");
6997         return 0;
6998 }
6999
7000 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7001                                 struct ieee80211_tx_queue_stats *stats)
7002 {
7003         struct iwl_priv *priv = hw->priv;
7004         int i, avail;
7005         struct iwl4965_tx_queue *txq;
7006         struct iwl4965_queue *q;
7007         unsigned long flags;
7008
7009         IWL_DEBUG_MAC80211("enter\n");
7010
7011         if (!iwl_is_ready_rf(priv)) {
7012                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7013                 return -EIO;
7014         }
7015
7016         spin_lock_irqsave(&priv->lock, flags);
7017
7018         for (i = 0; i < AC_NUM; i++) {
7019                 txq = &priv->txq[i];
7020                 q = &txq->q;
7021                 avail = iwl4965_queue_space(q);
7022
7023                 stats->data[i].len = q->n_window - avail;
7024                 stats->data[i].limit = q->n_window - q->high_mark;
7025                 stats->data[i].count = q->n_window;
7026
7027         }
7028         spin_unlock_irqrestore(&priv->lock, flags);
7029
7030         IWL_DEBUG_MAC80211("leave\n");
7031
7032         return 0;
7033 }
7034
7035 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7036                              struct ieee80211_low_level_stats *stats)
7037 {
7038         IWL_DEBUG_MAC80211("enter\n");
7039         IWL_DEBUG_MAC80211("leave\n");
7040
7041         return 0;
7042 }
7043
7044 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7045 {
7046         IWL_DEBUG_MAC80211("enter\n");
7047         IWL_DEBUG_MAC80211("leave\n");
7048
7049         return 0;
7050 }
7051
7052 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7053 {
7054         struct iwl_priv *priv = hw->priv;
7055         unsigned long flags;
7056
7057         mutex_lock(&priv->mutex);
7058         IWL_DEBUG_MAC80211("enter\n");
7059
7060         priv->lq_mngr.lq_ready = 0;
7061 #ifdef CONFIG_IWL4965_HT
7062         spin_lock_irqsave(&priv->lock, flags);
7063         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7064         spin_unlock_irqrestore(&priv->lock, flags);
7065 #endif /* CONFIG_IWL4965_HT */
7066
7067         iwlcore_reset_qos(priv);
7068
7069         cancel_delayed_work(&priv->post_associate);
7070
7071         spin_lock_irqsave(&priv->lock, flags);
7072         priv->assoc_id = 0;
7073         priv->assoc_capability = 0;
7074         priv->assoc_station_added = 0;
7075
7076         /* new association get rid of ibss beacon skb */
7077         if (priv->ibss_beacon)
7078                 dev_kfree_skb(priv->ibss_beacon);
7079
7080         priv->ibss_beacon = NULL;
7081
7082         priv->beacon_int = priv->hw->conf.beacon_int;
7083         priv->timestamp = 0;
7084         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7085                 priv->beacon_int = 0;
7086
7087         spin_unlock_irqrestore(&priv->lock, flags);
7088
7089         if (!iwl_is_ready_rf(priv)) {
7090                 IWL_DEBUG_MAC80211("leave - not ready\n");
7091                 mutex_unlock(&priv->mutex);
7092                 return;
7093         }
7094
7095         /* we are restarting association process
7096          * clear RXON_FILTER_ASSOC_MSK bit
7097          */
7098         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7099                 iwl4965_scan_cancel_timeout(priv, 100);
7100                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7101                 iwl4965_commit_rxon(priv);
7102         }
7103
7104         /* Per mac80211.h: This is only used in IBSS mode... */
7105         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7106
7107                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7108                 mutex_unlock(&priv->mutex);
7109                 return;
7110         }
7111
7112         priv->only_active_channel = 0;
7113
7114         iwl4965_set_rate(priv);
7115
7116         mutex_unlock(&priv->mutex);
7117
7118         IWL_DEBUG_MAC80211("leave\n");
7119 }
7120
7121 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7122                                  struct ieee80211_tx_control *control)
7123 {
7124         struct iwl_priv *priv = hw->priv;
7125         unsigned long flags;
7126
7127         mutex_lock(&priv->mutex);
7128         IWL_DEBUG_MAC80211("enter\n");
7129
7130         if (!iwl_is_ready_rf(priv)) {
7131                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7132                 mutex_unlock(&priv->mutex);
7133                 return -EIO;
7134         }
7135
7136         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7137                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7138                 mutex_unlock(&priv->mutex);
7139                 return -EIO;
7140         }
7141
7142         spin_lock_irqsave(&priv->lock, flags);
7143
7144         if (priv->ibss_beacon)
7145                 dev_kfree_skb(priv->ibss_beacon);
7146
7147         priv->ibss_beacon = skb;
7148
7149         priv->assoc_id = 0;
7150
7151         IWL_DEBUG_MAC80211("leave\n");
7152         spin_unlock_irqrestore(&priv->lock, flags);
7153
7154         iwlcore_reset_qos(priv);
7155
7156         queue_work(priv->workqueue, &priv->post_associate.work);
7157
7158         mutex_unlock(&priv->mutex);
7159
7160         return 0;
7161 }
7162
7163 /*****************************************************************************
7164  *
7165  * sysfs attributes
7166  *
7167  *****************************************************************************/
7168
7169 #ifdef CONFIG_IWLWIFI_DEBUG
7170
7171 /*
7172  * The following adds a new attribute to the sysfs representation
7173  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7174  * used for controlling the debug level.
7175  *
7176  * See the level definitions in iwl for details.
7177  */
7178
7179 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7180 {
7181         return sprintf(buf, "0x%08X\n", iwl_debug_level);
7182 }
7183 static ssize_t store_debug_level(struct device_driver *d,
7184                                  const char *buf, size_t count)
7185 {
7186         char *p = (char *)buf;
7187         u32 val;
7188
7189         val = simple_strtoul(p, &p, 0);
7190         if (p == buf)
7191                 printk(KERN_INFO DRV_NAME
7192                        ": %s is not in hex or decimal form.\n", buf);
7193         else
7194                 iwl_debug_level = val;
7195
7196         return strnlen(buf, count);
7197 }
7198
7199 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7200                    show_debug_level, store_debug_level);
7201
7202 #endif /* CONFIG_IWLWIFI_DEBUG */
7203
7204
7205 static ssize_t show_temperature(struct device *d,
7206                                 struct device_attribute *attr, char *buf)
7207 {
7208         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7209
7210         if (!iwl_is_alive(priv))
7211                 return -EAGAIN;
7212
7213         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7214 }
7215
7216 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7217
7218 static ssize_t show_rs_window(struct device *d,
7219                               struct device_attribute *attr,
7220                               char *buf)
7221 {
7222         struct iwl_priv *priv = d->driver_data;
7223         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7224 }
7225 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7226
7227 static ssize_t show_tx_power(struct device *d,
7228                              struct device_attribute *attr, char *buf)
7229 {
7230         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7231         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7232 }
7233
7234 static ssize_t store_tx_power(struct device *d,
7235                               struct device_attribute *attr,
7236                               const char *buf, size_t count)
7237 {
7238         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7239         char *p = (char *)buf;
7240         u32 val;
7241
7242         val = simple_strtoul(p, &p, 10);
7243         if (p == buf)
7244                 printk(KERN_INFO DRV_NAME
7245                        ": %s is not in decimal form.\n", buf);
7246         else
7247                 iwl4965_hw_reg_set_txpower(priv, val);
7248
7249         return count;
7250 }
7251
7252 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7253
7254 static ssize_t show_flags(struct device *d,
7255                           struct device_attribute *attr, char *buf)
7256 {
7257         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7258
7259         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7260 }
7261
7262 static ssize_t store_flags(struct device *d,
7263                            struct device_attribute *attr,
7264                            const char *buf, size_t count)
7265 {
7266         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7267         u32 flags = simple_strtoul(buf, NULL, 0);
7268
7269         mutex_lock(&priv->mutex);
7270         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7271                 /* Cancel any currently running scans... */
7272                 if (iwl4965_scan_cancel_timeout(priv, 100))
7273                         IWL_WARNING("Could not cancel scan.\n");
7274                 else {
7275                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7276                                        flags);
7277                         priv->staging_rxon.flags = cpu_to_le32(flags);
7278                         iwl4965_commit_rxon(priv);
7279                 }
7280         }
7281         mutex_unlock(&priv->mutex);
7282
7283         return count;
7284 }
7285
7286 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7287
7288 static ssize_t show_filter_flags(struct device *d,
7289                                  struct device_attribute *attr, char *buf)
7290 {
7291         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7292
7293         return sprintf(buf, "0x%04X\n",
7294                 le32_to_cpu(priv->active_rxon.filter_flags));
7295 }
7296
7297 static ssize_t store_filter_flags(struct device *d,
7298                                   struct device_attribute *attr,
7299                                   const char *buf, size_t count)
7300 {
7301         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7302         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7303
7304         mutex_lock(&priv->mutex);
7305         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7306                 /* Cancel any currently running scans... */
7307                 if (iwl4965_scan_cancel_timeout(priv, 100))
7308                         IWL_WARNING("Could not cancel scan.\n");
7309                 else {
7310                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7311                                        "0x%04X\n", filter_flags);
7312                         priv->staging_rxon.filter_flags =
7313                                 cpu_to_le32(filter_flags);
7314                         iwl4965_commit_rxon(priv);
7315                 }
7316         }
7317         mutex_unlock(&priv->mutex);
7318
7319         return count;
7320 }
7321
7322 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7323                    store_filter_flags);
7324
7325 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7326
7327 static ssize_t show_measurement(struct device *d,
7328                                 struct device_attribute *attr, char *buf)
7329 {
7330         struct iwl_priv *priv = dev_get_drvdata(d);
7331         struct iwl4965_spectrum_notification measure_report;
7332         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7333         u8 *data = (u8 *) & measure_report;
7334         unsigned long flags;
7335
7336         spin_lock_irqsave(&priv->lock, flags);
7337         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7338                 spin_unlock_irqrestore(&priv->lock, flags);
7339                 return 0;
7340         }
7341         memcpy(&measure_report, &priv->measure_report, size);
7342         priv->measurement_status = 0;
7343         spin_unlock_irqrestore(&priv->lock, flags);
7344
7345         while (size && (PAGE_SIZE - len)) {
7346                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7347                                    PAGE_SIZE - len, 1);
7348                 len = strlen(buf);
7349                 if (PAGE_SIZE - len)
7350                         buf[len++] = '\n';
7351
7352                 ofs += 16;
7353                 size -= min(size, 16U);
7354         }
7355
7356         return len;
7357 }
7358
7359 static ssize_t store_measurement(struct device *d,
7360                                  struct device_attribute *attr,
7361                                  const char *buf, size_t count)
7362 {
7363         struct iwl_priv *priv = dev_get_drvdata(d);
7364         struct ieee80211_measurement_params params = {
7365                 .channel = le16_to_cpu(priv->active_rxon.channel),
7366                 .start_time = cpu_to_le64(priv->last_tsf),
7367                 .duration = cpu_to_le16(1),
7368         };
7369         u8 type = IWL_MEASURE_BASIC;
7370         u8 buffer[32];
7371         u8 channel;
7372
7373         if (count) {
7374                 char *p = buffer;
7375                 strncpy(buffer, buf, min(sizeof(buffer), count));
7376                 channel = simple_strtoul(p, NULL, 0);
7377                 if (channel)
7378                         params.channel = channel;
7379
7380                 p = buffer;
7381                 while (*p && *p != ' ')
7382                         p++;
7383                 if (*p)
7384                         type = simple_strtoul(p + 1, NULL, 0);
7385         }
7386
7387         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7388                        "channel %d (for '%s')\n", type, params.channel, buf);
7389         iwl4965_get_measurement(priv, &params, type);
7390
7391         return count;
7392 }
7393
7394 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7395                    show_measurement, store_measurement);
7396 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7397
7398 static ssize_t store_retry_rate(struct device *d,
7399                                 struct device_attribute *attr,
7400                                 const char *buf, size_t count)
7401 {
7402         struct iwl_priv *priv = dev_get_drvdata(d);
7403
7404         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7405         if (priv->retry_rate <= 0)
7406                 priv->retry_rate = 1;
7407
7408         return count;
7409 }
7410
7411 static ssize_t show_retry_rate(struct device *d,
7412                                struct device_attribute *attr, char *buf)
7413 {
7414         struct iwl_priv *priv = dev_get_drvdata(d);
7415         return sprintf(buf, "%d", priv->retry_rate);
7416 }
7417
7418 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7419                    store_retry_rate);
7420
7421 static ssize_t store_power_level(struct device *d,
7422                                  struct device_attribute *attr,
7423                                  const char *buf, size_t count)
7424 {
7425         struct iwl_priv *priv = dev_get_drvdata(d);
7426         int rc;
7427         int mode;
7428
7429         mode = simple_strtoul(buf, NULL, 0);
7430         mutex_lock(&priv->mutex);
7431
7432         if (!iwl_is_ready(priv)) {
7433                 rc = -EAGAIN;
7434                 goto out;
7435         }
7436
7437         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7438                 mode = IWL_POWER_AC;
7439         else
7440                 mode |= IWL_POWER_ENABLED;
7441
7442         if (mode != priv->power_mode) {
7443                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7444                 if (rc) {
7445                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7446                         goto out;
7447                 }
7448                 priv->power_mode = mode;
7449         }
7450
7451         rc = count;
7452
7453  out:
7454         mutex_unlock(&priv->mutex);
7455         return rc;
7456 }
7457
7458 #define MAX_WX_STRING 80
7459
7460 /* Values are in microsecond */
7461 static const s32 timeout_duration[] = {
7462         350000,
7463         250000,
7464         75000,
7465         37000,
7466         25000,
7467 };
7468 static const s32 period_duration[] = {
7469         400000,
7470         700000,
7471         1000000,
7472         1000000,
7473         1000000
7474 };
7475
7476 static ssize_t show_power_level(struct device *d,
7477                                 struct device_attribute *attr, char *buf)
7478 {
7479         struct iwl_priv *priv = dev_get_drvdata(d);
7480         int level = IWL_POWER_LEVEL(priv->power_mode);
7481         char *p = buf;
7482
7483         p += sprintf(p, "%d ", level);
7484         switch (level) {
7485         case IWL_POWER_MODE_CAM:
7486         case IWL_POWER_AC:
7487                 p += sprintf(p, "(AC)");
7488                 break;
7489         case IWL_POWER_BATTERY:
7490                 p += sprintf(p, "(BATTERY)");
7491                 break;
7492         default:
7493                 p += sprintf(p,
7494                              "(Timeout %dms, Period %dms)",
7495                              timeout_duration[level - 1] / 1000,
7496                              period_duration[level - 1] / 1000);
7497         }
7498
7499         if (!(priv->power_mode & IWL_POWER_ENABLED))
7500                 p += sprintf(p, " OFF\n");
7501         else
7502                 p += sprintf(p, " \n");
7503
7504         return (p - buf + 1);
7505
7506 }
7507
7508 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7509                    store_power_level);
7510
7511 static ssize_t show_channels(struct device *d,
7512                              struct device_attribute *attr, char *buf)
7513 {
7514         /* all this shit doesn't belong into sysfs anyway */
7515         return 0;
7516 }
7517
7518 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7519
7520 static ssize_t show_statistics(struct device *d,
7521                                struct device_attribute *attr, char *buf)
7522 {
7523         struct iwl_priv *priv = dev_get_drvdata(d);
7524         u32 size = sizeof(struct iwl4965_notif_statistics);
7525         u32 len = 0, ofs = 0;
7526         u8 *data = (u8 *) & priv->statistics;
7527         int rc = 0;
7528
7529         if (!iwl_is_alive(priv))
7530                 return -EAGAIN;
7531
7532         mutex_lock(&priv->mutex);
7533         rc = iwl4965_send_statistics_request(priv);
7534         mutex_unlock(&priv->mutex);
7535
7536         if (rc) {
7537                 len = sprintf(buf,
7538                               "Error sending statistics request: 0x%08X\n", rc);
7539                 return len;
7540         }
7541
7542         while (size && (PAGE_SIZE - len)) {
7543                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7544                                    PAGE_SIZE - len, 1);
7545                 len = strlen(buf);
7546                 if (PAGE_SIZE - len)
7547                         buf[len++] = '\n';
7548
7549                 ofs += 16;
7550                 size -= min(size, 16U);
7551         }
7552
7553         return len;
7554 }
7555
7556 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7557
7558 static ssize_t show_antenna(struct device *d,
7559                             struct device_attribute *attr, char *buf)
7560 {
7561         struct iwl_priv *priv = dev_get_drvdata(d);
7562
7563         if (!iwl_is_alive(priv))
7564                 return -EAGAIN;
7565
7566         return sprintf(buf, "%d\n", priv->antenna);
7567 }
7568
7569 static ssize_t store_antenna(struct device *d,
7570                              struct device_attribute *attr,
7571                              const char *buf, size_t count)
7572 {
7573         int ant;
7574         struct iwl_priv *priv = dev_get_drvdata(d);
7575
7576         if (count == 0)
7577                 return 0;
7578
7579         if (sscanf(buf, "%1i", &ant) != 1) {
7580                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7581                 return count;
7582         }
7583
7584         if ((ant >= 0) && (ant <= 2)) {
7585                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7586                 priv->antenna = (enum iwl4965_antenna)ant;
7587         } else
7588                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7589
7590
7591         return count;
7592 }
7593
7594 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7595
7596 static ssize_t show_status(struct device *d,
7597                            struct device_attribute *attr, char *buf)
7598 {
7599         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7600         if (!iwl_is_alive(priv))
7601                 return -EAGAIN;
7602         return sprintf(buf, "0x%08x\n", (int)priv->status);
7603 }
7604
7605 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7606
7607 static ssize_t dump_error_log(struct device *d,
7608                               struct device_attribute *attr,
7609                               const char *buf, size_t count)
7610 {
7611         char *p = (char *)buf;
7612
7613         if (p[0] == '1')
7614                 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7615
7616         return strnlen(buf, count);
7617 }
7618
7619 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7620
7621 static ssize_t dump_event_log(struct device *d,
7622                               struct device_attribute *attr,
7623                               const char *buf, size_t count)
7624 {
7625         char *p = (char *)buf;
7626
7627         if (p[0] == '1')
7628                 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7629
7630         return strnlen(buf, count);
7631 }
7632
7633 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7634
7635 /*****************************************************************************
7636  *
7637  * driver setup and teardown
7638  *
7639  *****************************************************************************/
7640
7641 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7642 {
7643         priv->workqueue = create_workqueue(DRV_NAME);
7644
7645         init_waitqueue_head(&priv->wait_command_queue);
7646
7647         INIT_WORK(&priv->up, iwl4965_bg_up);
7648         INIT_WORK(&priv->restart, iwl4965_bg_restart);
7649         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7650         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7651         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7652         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7653         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7654         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7655         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7656         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7657         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7658         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7659
7660         iwl4965_hw_setup_deferred_work(priv);
7661
7662         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7663                      iwl4965_irq_tasklet, (unsigned long)priv);
7664 }
7665
7666 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7667 {
7668         iwl4965_hw_cancel_deferred_work(priv);
7669
7670         cancel_delayed_work_sync(&priv->init_alive_start);
7671         cancel_delayed_work(&priv->scan_check);
7672         cancel_delayed_work(&priv->alive_start);
7673         cancel_delayed_work(&priv->post_associate);
7674         cancel_work_sync(&priv->beacon_update);
7675 }
7676
7677 static struct attribute *iwl4965_sysfs_entries[] = {
7678         &dev_attr_antenna.attr,
7679         &dev_attr_channels.attr,
7680         &dev_attr_dump_errors.attr,
7681         &dev_attr_dump_events.attr,
7682         &dev_attr_flags.attr,
7683         &dev_attr_filter_flags.attr,
7684 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7685         &dev_attr_measurement.attr,
7686 #endif
7687         &dev_attr_power_level.attr,
7688         &dev_attr_retry_rate.attr,
7689         &dev_attr_rs_window.attr,
7690         &dev_attr_statistics.attr,
7691         &dev_attr_status.attr,
7692         &dev_attr_temperature.attr,
7693         &dev_attr_tx_power.attr,
7694
7695         NULL
7696 };
7697
7698 static struct attribute_group iwl4965_attribute_group = {
7699         .name = NULL,           /* put in device directory */
7700         .attrs = iwl4965_sysfs_entries,
7701 };
7702
7703 static struct ieee80211_ops iwl4965_hw_ops = {
7704         .tx = iwl4965_mac_tx,
7705         .start = iwl4965_mac_start,
7706         .stop = iwl4965_mac_stop,
7707         .add_interface = iwl4965_mac_add_interface,
7708         .remove_interface = iwl4965_mac_remove_interface,
7709         .config = iwl4965_mac_config,
7710         .config_interface = iwl4965_mac_config_interface,
7711         .configure_filter = iwl4965_configure_filter,
7712         .set_key = iwl4965_mac_set_key,
7713         .update_tkip_key = iwl4965_mac_update_tkip_key,
7714         .get_stats = iwl4965_mac_get_stats,
7715         .get_tx_stats = iwl4965_mac_get_tx_stats,
7716         .conf_tx = iwl4965_mac_conf_tx,
7717         .get_tsf = iwl4965_mac_get_tsf,
7718         .reset_tsf = iwl4965_mac_reset_tsf,
7719         .beacon_update = iwl4965_mac_beacon_update,
7720         .bss_info_changed = iwl4965_bss_info_changed,
7721 #ifdef CONFIG_IWL4965_HT
7722         .ampdu_action = iwl4965_mac_ampdu_action,
7723 #endif  /* CONFIG_IWL4965_HT */
7724         .hw_scan = iwl4965_mac_hw_scan
7725 };
7726
7727 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7728 {
7729         int err = 0;
7730         struct iwl_priv *priv;
7731         struct ieee80211_hw *hw;
7732         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7733         unsigned long flags;
7734         DECLARE_MAC_BUF(mac);
7735
7736         /************************
7737          * 1. Allocating HW data
7738          ************************/
7739
7740         /* Disabling hardware scan means that mac80211 will perform scans
7741          * "the hard way", rather than using device's scan. */
7742         if (cfg->mod_params->disable_hw_scan) {
7743                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7744                 iwl4965_hw_ops.hw_scan = NULL;
7745         }
7746
7747         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
7748         if (!hw) {
7749                 err = -ENOMEM;
7750                 goto out;
7751         }
7752         priv = hw->priv;
7753         /* At this point both hw and priv are allocated. */
7754
7755         SET_IEEE80211_DEV(hw, &pdev->dev);
7756
7757         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7758         priv->cfg = cfg;
7759         priv->pci_dev = pdev;
7760
7761 #ifdef CONFIG_IWLWIFI_DEBUG
7762         iwl_debug_level = priv->cfg->mod_params->debug;
7763         atomic_set(&priv->restrict_refcnt, 0);
7764 #endif
7765
7766         /**************************
7767          * 2. Initializing PCI bus
7768          **************************/
7769         if (pci_enable_device(pdev)) {
7770                 err = -ENODEV;
7771                 goto out_ieee80211_free_hw;
7772         }
7773
7774         pci_set_master(pdev);
7775
7776         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7777         if (!err)
7778                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7779                 if (err) {
7780                         printk(KERN_WARNING DRV_NAME
7781                                 ": No suitable DMA available.\n");
7782                         goto out_pci_disable_device;
7783         }
7784
7785         err = pci_request_regions(pdev, DRV_NAME);
7786         if (err)
7787                 goto out_pci_disable_device;
7788
7789         pci_set_drvdata(pdev, priv);
7790
7791         /* We disable the RETRY_TIMEOUT register (0x41) to keep
7792          * PCI Tx retries from interfering with C3 CPU state */
7793         pci_write_config_byte(pdev, 0x41, 0x00);
7794
7795         /***********************
7796          * 3. Read REV register
7797          ***********************/
7798         priv->hw_base = pci_iomap(pdev, 0, 0);
7799         if (!priv->hw_base) {
7800                 err = -ENODEV;
7801                 goto out_pci_release_regions;
7802         }
7803
7804         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7805                 (unsigned long long) pci_resource_len(pdev, 0));
7806         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7807
7808         printk(KERN_INFO DRV_NAME
7809                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7810
7811         /*****************
7812          * 4. Read EEPROM
7813          *****************/
7814         /* nic init */
7815         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7816                 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7817
7818         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7819         err = iwl_poll_bit(priv, CSR_GP_CNTRL,
7820                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
7821                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7822         if (err < 0) {
7823                 IWL_DEBUG_INFO("Failed to init the card\n");
7824                 goto out_iounmap;
7825         }
7826         /* Read the EEPROM */
7827         err = iwl_eeprom_init(priv);
7828         if (err) {
7829                 IWL_ERROR("Unable to init EEPROM\n");
7830                 goto out_iounmap;
7831         }
7832         /* MAC Address location in EEPROM same for 3945/4965 */
7833         iwl_eeprom_get_mac(priv, priv->mac_addr);
7834         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
7835         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7836
7837         /************************
7838          * 5. Setup HW constants
7839          ************************/
7840         /* Device-specific setup */
7841         if (iwl4965_hw_set_hw_setting(priv)) {
7842                 IWL_ERROR("failed to set hw settings\n");
7843                 goto out_iounmap;
7844         }
7845
7846         /*******************
7847          * 6. Setup hw/priv
7848          *******************/
7849
7850         err = iwl_setup(priv);
7851         if (err)
7852                 goto out_unset_hw_settings;
7853         /* At this point both hw and priv are initialized. */
7854
7855         /**********************************
7856          * 7. Initialize module parameters
7857          **********************************/
7858
7859         /* Disable radio (SW RF KILL) via parameter when loading driver */
7860         if (priv->cfg->mod_params->disable) {
7861                 set_bit(STATUS_RF_KILL_SW, &priv->status);
7862                 IWL_DEBUG_INFO("Radio disabled.\n");
7863         }
7864
7865         if (priv->cfg->mod_params->enable_qos)
7866                 priv->qos_data.qos_enable = 1;
7867
7868         /********************
7869          * 8. Setup services
7870          ********************/
7871         spin_lock_irqsave(&priv->lock, flags);
7872         iwl4965_disable_interrupts(priv);
7873         spin_unlock_irqrestore(&priv->lock, flags);
7874
7875         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7876         if (err) {
7877                 IWL_ERROR("failed to create sysfs device attributes\n");
7878                 goto out_unset_hw_settings;
7879         }
7880
7881         err = iwl_dbgfs_register(priv, DRV_NAME);
7882         if (err) {
7883                 IWL_ERROR("failed to create debugfs files\n");
7884                 goto out_remove_sysfs;
7885         }
7886
7887         iwl4965_setup_deferred_work(priv);
7888         iwl4965_setup_rx_handlers(priv);
7889
7890         /********************
7891          * 9. Conclude
7892          ********************/
7893         pci_save_state(pdev);
7894         pci_disable_device(pdev);
7895
7896         /* notify iwlcore to init */
7897         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
7898         return 0;
7899
7900  out_remove_sysfs:
7901         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7902  out_unset_hw_settings:
7903         iwl4965_unset_hw_setting(priv);
7904  out_iounmap:
7905         pci_iounmap(pdev, priv->hw_base);
7906  out_pci_release_regions:
7907         pci_release_regions(pdev);
7908         pci_set_drvdata(pdev, NULL);
7909  out_pci_disable_device:
7910         pci_disable_device(pdev);
7911  out_ieee80211_free_hw:
7912         ieee80211_free_hw(priv->hw);
7913  out:
7914         return err;
7915 }
7916
7917 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
7918 {
7919         struct iwl_priv *priv = pci_get_drvdata(pdev);
7920         struct list_head *p, *q;
7921         int i;
7922         unsigned long flags;
7923
7924         if (!priv)
7925                 return;
7926
7927         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7928
7929         if (priv->mac80211_registered) {
7930                 ieee80211_unregister_hw(priv->hw);
7931                 priv->mac80211_registered = 0;
7932         }
7933
7934         set_bit(STATUS_EXIT_PENDING, &priv->status);
7935
7936         iwl4965_down(priv);
7937
7938         /* make sure we flush any pending irq or
7939          * tasklet for the driver
7940          */
7941         spin_lock_irqsave(&priv->lock, flags);
7942         iwl4965_disable_interrupts(priv);
7943         spin_unlock_irqrestore(&priv->lock, flags);
7944
7945         iwl_synchronize_irq(priv);
7946
7947         /* Free MAC hash list for ADHOC */
7948         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
7949                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
7950                         list_del(p);
7951                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
7952                 }
7953         }
7954
7955         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
7956         iwl_dbgfs_unregister(priv);
7957         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7958
7959         iwl4965_dealloc_ucode_pci(priv);
7960
7961         if (priv->rxq.bd)
7962                 iwl4965_rx_queue_free(priv, &priv->rxq);
7963         iwl4965_hw_txq_ctx_free(priv);
7964
7965         iwl4965_unset_hw_setting(priv);
7966         iwlcore_clear_stations_table(priv);
7967
7968
7969         /*netif_stop_queue(dev); */
7970         flush_workqueue(priv->workqueue);
7971
7972         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
7973          * priv->workqueue... so we can't take down the workqueue
7974          * until now... */
7975         destroy_workqueue(priv->workqueue);
7976         priv->workqueue = NULL;
7977
7978         pci_iounmap(pdev, priv->hw_base);
7979         pci_release_regions(pdev);
7980         pci_disable_device(pdev);
7981         pci_set_drvdata(pdev, NULL);
7982
7983         iwl_free_channel_map(priv);
7984         iwl4965_free_geos(priv);
7985
7986         if (priv->ibss_beacon)
7987                 dev_kfree_skb(priv->ibss_beacon);
7988
7989         ieee80211_free_hw(priv->hw);
7990 }
7991
7992 #ifdef CONFIG_PM
7993
7994 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
7995 {
7996         struct iwl_priv *priv = pci_get_drvdata(pdev);
7997
7998         if (priv->is_open) {
7999                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8000                 iwl4965_mac_stop(priv->hw);
8001                 priv->is_open = 1;
8002         }
8003
8004         pci_set_power_state(pdev, PCI_D3hot);
8005
8006         return 0;
8007 }
8008
8009 static int iwl4965_pci_resume(struct pci_dev *pdev)
8010 {
8011         struct iwl_priv *priv = pci_get_drvdata(pdev);
8012
8013         pci_set_power_state(pdev, PCI_D0);
8014
8015         if (priv->is_open)
8016                 iwl4965_mac_start(priv->hw);
8017
8018         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8019         return 0;
8020 }
8021
8022 #endif /* CONFIG_PM */
8023
8024 /*****************************************************************************
8025  *
8026  * driver and module entry point
8027  *
8028  *****************************************************************************/
8029
8030 static struct pci_driver iwl4965_driver = {
8031         .name = DRV_NAME,
8032         .id_table = iwl4965_hw_card_ids,
8033         .probe = iwl4965_pci_probe,
8034         .remove = __devexit_p(iwl4965_pci_remove),
8035 #ifdef CONFIG_PM
8036         .suspend = iwl4965_pci_suspend,
8037         .resume = iwl4965_pci_resume,
8038 #endif
8039 };
8040
8041 static int __init iwl4965_init(void)
8042 {
8043
8044         int ret;
8045         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8046         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8047
8048         ret = iwl4965_rate_control_register();
8049         if (ret) {
8050                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
8051                 return ret;
8052         }
8053
8054         ret = pci_register_driver(&iwl4965_driver);
8055         if (ret) {
8056                 IWL_ERROR("Unable to initialize PCI module\n");
8057                 goto error_register;
8058         }
8059 #ifdef CONFIG_IWLWIFI_DEBUG
8060         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8061         if (ret) {
8062                 IWL_ERROR("Unable to create driver sysfs file\n");
8063                 goto error_debug;
8064         }
8065 #endif
8066
8067         return ret;
8068
8069 #ifdef CONFIG_IWLWIFI_DEBUG
8070 error_debug:
8071         pci_unregister_driver(&iwl4965_driver);
8072 #endif
8073 error_register:
8074         iwl4965_rate_control_unregister();
8075         return ret;
8076 }
8077
8078 static void __exit iwl4965_exit(void)
8079 {
8080 #ifdef CONFIG_IWLWIFI_DEBUG
8081         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8082 #endif
8083         pci_unregister_driver(&iwl4965_driver);
8084         iwl4965_rate_control_unregister();
8085 }
8086
8087 module_exit(iwl4965_exit);
8088 module_init(iwl4965_init);