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         ret = iwl4965_tx_queue_update_wr_ptr(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         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 rc = 0;
 762         struct iwl4965_rx_packet *res = NULL;
 763         struct iwl4965_rxon_assoc_cmd rxon_assoc;
 764         struct iwl_host_cmd cmd = {
 765                 .id = REPLY_RXON_ASSOC,
 766                 .len = sizeof(rxon_assoc),
 767                 .meta.flags = CMD_WANT_SKB,
 768                 .data = &rxon_assoc,
 769         };
 770         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
 771         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
 772
 773         if ((rxon1->flags == rxon2->flags) &&
 774             (rxon1->filter_flags == rxon2->filter_flags) &&
 775             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
 776             (rxon1->ofdm_ht_single_stream_basic_rates ==
 777              rxon2->ofdm_ht_single_stream_basic_rates) &&
 778             (rxon1->ofdm_ht_dual_stream_basic_rates ==
 779              rxon2->ofdm_ht_dual_stream_basic_rates) &&
 780             (rxon1->rx_chain == rxon2->rx_chain) &&
 781             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
 782                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
 783                 return 0;
 784         }
 785
 786         rxon_assoc.flags = priv->staging_rxon.flags;
 787         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
 788         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
 789         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
 790         rxon_assoc.reserved = 0;
 791         rxon_assoc.ofdm_ht_single_stream_basic_rates =
 792             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
 793         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
 794             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
 795         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
 796
 797         rc = iwl_send_cmd_sync(priv, &cmd);
 798         if (rc)
 799                 return rc;
 800
 801         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
 802         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 803                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
 804                 rc = -EIO;
 805         }
 806
 807         priv->alloc_rxb_skb--;
 808         dev_kfree_skb_any(cmd.meta.u.skb);
 809
 810         return rc;
 811 }
 812
 813 /**
 814  * iwl4965_commit_rxon - commit staging_rxon to hardware
 815  *
 816  * The RXON command in staging_rxon is committed to the hardware and
 817  * the active_rxon structure is updated with the new data.  This
 818  * function correctly transitions out of the RXON_ASSOC_MSK state if
 819  * a HW tune is required based on the RXON structure changes.
 820  */
 821 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 822 {
 823         /* cast away the const for active_rxon in this function */
 824         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 825         DECLARE_MAC_BUF(mac);
 826         int rc = 0;
 827
 828         if (!iwl_is_alive(priv))
 829                 return -1;
 830
 831         /* always get timestamp with Rx frame */
 832         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 833
 834         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 835         if (rc) {
 836                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 837                 return -EINVAL;
 838         }
 839
 840         /* If we don't need to send a full RXON, we can use
 841          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 842          * and other flags for the current radio configuration. */
 843         if (!iwl4965_full_rxon_required(priv)) {
 844                 rc = iwl4965_send_rxon_assoc(priv);
 845                 if (rc) {
 846                         IWL_ERROR("Error setting RXON_ASSOC "
 847                                   "configuration (%d).\n", rc);
 848                         return rc;
 849                 }
 850
 851                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 852
 853                 return 0;
 854         }
 855
 856         /* station table will be cleared */
 857         priv->assoc_station_added = 0;
 858
 859 #ifdef CONFIG_IWL4965_SENSITIVITY
 860         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 861         if (!priv->error_recovering)
 862                 priv->start_calib = 0;
 863
 864         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 865 #endif /* CONFIG_IWL4965_SENSITIVITY */
 866
 867         /* If we are currently associated and the new config requires
 868          * an RXON_ASSOC and the new config wants the associated mask enabled,
 869          * we must clear the associated from the active configuration
 870          * before we apply the new config */
 871         if (iwl_is_associated(priv) &&
 872             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 873                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 874                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 875
 876                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 877                                       sizeof(struct iwl4965_rxon_cmd),
 878                                       &priv->active_rxon);
 879
 880                 /* If the mask clearing failed then we set
 881                  * active_rxon back to what it was previously */
 882                 if (rc) {
 883                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 884                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 885                                   "configuration (%d).\n", rc);
 886                         return rc;
 887                 }
 888         }
 889
 890         IWL_DEBUG_INFO("Sending RXON\n"
 891                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 892                        "* channel = %d\n"
 893                        "* bssid = %s\n",
 894                        ((priv->staging_rxon.filter_flags &
 895                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 896                        le16_to_cpu(priv->staging_rxon.channel),
 897                        print_mac(mac, priv->staging_rxon.bssid_addr));
 898
 899         iwl4965_set_rxon_hwcrypto(priv, priv->cfg->mod_params->hw_crypto);
 900         /* Apply the new configuration */
 901         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 902                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
 903         if (rc) {
 904                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 905                 return rc;
 906         }
 907
 908         iwlcore_clear_stations_table(priv);
 909
 910 #ifdef CONFIG_IWL4965_SENSITIVITY
 911         if (!priv->error_recovering)
 912                 priv->start_calib = 0;
 913
 914         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
 915         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
 916 #endif /* CONFIG_IWL4965_SENSITIVITY */
 917
 918         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 919
 920         /* If we issue a new RXON command which required a tune then we must
 921          * send a new TXPOWER command or we won't be able to Tx any frames */
 922         rc = iwl4965_hw_reg_send_txpower(priv);
 923         if (rc) {
 924                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 925                 return rc;
 926         }
 927
 928         /* Add the broadcast address so we can send broadcast frames */
 929         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
 930             IWL_INVALID_STATION) {
 931                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 932                 return -EIO;
 933         }
 934
 935         /* If we have set the ASSOC_MSK and we are in BSS mode then
 936          * add the IWL_AP_ID to the station rate table */
 937         if (iwl_is_associated(priv) &&
 938             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 939                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 940                     == IWL_INVALID_STATION) {
 941                         IWL_ERROR("Error adding AP address for transmit.\n");
 942                         return -EIO;
 943                 }
 944                 priv->assoc_station_added = 1;
 945                 if (priv->default_wep_key &&
 946                     iwl_send_static_wepkey_cmd(priv, 0))
 947                         IWL_ERROR("Could not send WEP static key.\n");
 948         }
 949
 950         return 0;
 951 }
 952
 953 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 954 {
 955         struct iwl4965_bt_cmd bt_cmd = {
 956                 .flags = 3,
 957                 .lead_time = 0xAA,
 958                 .max_kill = 1,
 959                 .kill_ack_mask = 0,
 960                 .kill_cts_mask = 0,
 961         };
 962
 963         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 964                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 965 }
 966
 967 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 968 {
 969         int rc = 0;
 970         struct iwl4965_rx_packet *res;
 971         struct iwl_host_cmd cmd = {
 972                 .id = REPLY_SCAN_ABORT_CMD,
 973                 .meta.flags = CMD_WANT_SKB,
 974         };
 975
 976         /* If there isn't a scan actively going on in the hardware
 977          * then we are in between scan bands and not actually
 978          * actively scanning, so don't send the abort command */
 979         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 980                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 981                 return 0;
 982         }
 983
 984         rc = iwl_send_cmd_sync(priv, &cmd);
 985         if (rc) {
 986                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 987                 return rc;
 988         }
 989
 990         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
 991         if (res->u.status != CAN_ABORT_STATUS) {
 992                 /* The scan abort will return 1 for success or
 993                  * 2 for "failure".  A failure condition can be
 994                  * due to simply not being in an active scan which
 995                  * can occur if we send the scan abort before we
 996                  * the microcode has notified us that a scan is
 997                  * completed. */
 998                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
 999                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1000                 clear_bit(STATUS_SCAN_HW, &priv->status);
1001         }
1002
1003         dev_kfree_skb_any(cmd.meta.u.skb);
1004
1005         return rc;
1006 }
1007
1008 static int iwl4965_card_state_sync_callback(struct iwl_priv *priv,
1009                                         struct iwl_cmd *cmd,
1010                                         struct sk_buff *skb)
1011 {
1012         return 1;
1013 }
1014
1015 /*
1016  * CARD_STATE_CMD
1017  *
1018  * Use: Sets the device's internal card state to enable, disable, or halt
1019  *
1020  * When in the 'enable' state the card operates as normal.
1021  * When in the 'disable' state, the card enters into a low power mode.
1022  * When in the 'halt' state, the card is shut down and must be fully
1023  * restarted to come back on.
1024  */
1025 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1026 {
1027         struct iwl_host_cmd cmd = {
1028                 .id = REPLY_CARD_STATE_CMD,
1029                 .len = sizeof(u32),
1030                 .data = &flags,
1031                 .meta.flags = meta_flag,
1032         };
1033
1034         if (meta_flag & CMD_ASYNC)
1035                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1036
1037         return iwl_send_cmd(priv, &cmd);
1038 }
1039
1040 static int iwl4965_add_sta_sync_callback(struct iwl_priv *priv,
1041                                      struct iwl_cmd *cmd, struct sk_buff *skb)
1042 {
1043         struct iwl4965_rx_packet *res = NULL;
1044
1045         if (!skb) {
1046                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1047                 return 1;
1048         }
1049
1050         res = (struct iwl4965_rx_packet *)skb->data;
1051         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1052                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1053                           res->hdr.flags);
1054                 return 1;
1055         }
1056
1057         switch (res->u.add_sta.status) {
1058         case ADD_STA_SUCCESS_MSK:
1059                 break;
1060         default:
1061                 break;
1062         }
1063
1064         /* We didn't cache the SKB; let the caller free it */
1065         return 1;
1066 }
1067
1068 int iwl4965_send_add_station(struct iwl_priv *priv,
1069                          struct iwl4965_addsta_cmd *sta, u8 flags)
1070 {
1071         struct iwl4965_rx_packet *res = NULL;
1072         int rc = 0;
1073         struct iwl_host_cmd cmd = {
1074                 .id = REPLY_ADD_STA,
1075                 .len = sizeof(struct iwl4965_addsta_cmd),
1076                 .meta.flags = flags,
1077                 .data = sta,
1078         };
1079
1080         if (flags & CMD_ASYNC)
1081                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1082         else
1083                 cmd.meta.flags |= CMD_WANT_SKB;
1084
1085         rc = iwl_send_cmd(priv, &cmd);
1086
1087         if (rc || (flags & CMD_ASYNC))
1088                 return rc;
1089
1090         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1091         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1092                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1093                           res->hdr.flags);
1094                 rc = -EIO;
1095         }
1096
1097         if (rc == 0) {
1098                 switch (res->u.add_sta.status) {
1099                 case ADD_STA_SUCCESS_MSK:
1100                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1101                         break;
1102                 default:
1103                         rc = -EIO;
1104                         IWL_WARNING("REPLY_ADD_STA failed\n");
1105                         break;
1106                 }
1107         }
1108
1109         priv->alloc_rxb_skb--;
1110         dev_kfree_skb_any(cmd.meta.u.skb);
1111
1112         return rc;
1113 }
1114
1115 static int iwl4965_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
1116                                    struct ieee80211_key_conf *keyconf,
1117                                    u8 sta_id)
1118 {
1119         unsigned long flags;
1120         __le16 key_flags = 0;
1121
1122         key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
1123         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1124
1125         if (sta_id == priv->hw_setting.bcast_sta_id)
1126                 key_flags |= STA_KEY_MULTICAST_MSK;
1127
1128         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1129         keyconf->hw_key_idx = keyconf->keyidx;
1130
1131         key_flags &= ~STA_KEY_FLG_INVALID;
1132
1133         spin_lock_irqsave(&priv->sta_lock, flags);
1134         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1135         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1136
1137         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1138                keyconf->keylen);
1139
1140         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1141                keyconf->keylen);
1142
1143         priv->stations[sta_id].sta.key.key_offset =
1144                                 iwl_get_free_ucode_key_index(priv);
1145         priv->stations[sta_id].sta.key.key_flags = key_flags;
1146         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1147         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1148
1149         spin_unlock_irqrestore(&priv->sta_lock, flags);
1150
1151         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1152         return iwl4965_send_add_station(priv,
1153                                 &priv->stations[sta_id].sta, CMD_ASYNC);
1154 }
1155
1156 static int iwl4965_set_tkip_dynamic_key_info(struct iwl_priv *priv,
1157                                    struct ieee80211_key_conf *keyconf,
1158                                    u8 sta_id)
1159 {
1160         unsigned long flags;
1161         int ret = 0;
1162
1163         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1164         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1165         keyconf->hw_key_idx = keyconf->keyidx;
1166
1167         spin_lock_irqsave(&priv->sta_lock, flags);
1168
1169         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1170         priv->stations[sta_id].keyinfo.conf = keyconf;
1171         priv->stations[sta_id].keyinfo.keylen = 16;
1172
1173         /* This copy is acutally not needed: we get the key with each TX */
1174         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
1175
1176         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
1177
1178         spin_unlock_irqrestore(&priv->sta_lock, flags);
1179
1180         return ret;
1181 }
1182
1183 static int iwl4965_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1184 {
1185         unsigned long flags;
1186
1187         priv->key_mapping_key = 0;
1188
1189         spin_lock_irqsave(&priv->sta_lock, flags);
1190         if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
1191                 &priv->ucode_key_table))
1192                 IWL_ERROR("index %d not used in uCode key table.\n",
1193                         priv->stations[sta_id].sta.key.key_offset);
1194         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1195         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1196         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1197         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1198         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1199         spin_unlock_irqrestore(&priv->sta_lock, flags);
1200
1201         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1202         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1203         return 0;
1204 }
1205
1206 static int iwl4965_set_dynamic_key(struct iwl_priv *priv,
1207                                 struct ieee80211_key_conf *key, u8 sta_id)
1208 {
1209         int ret;
1210
1211         priv->key_mapping_key = 1;
1212
1213         switch (key->alg) {
1214         case ALG_CCMP:
1215                 ret = iwl4965_set_ccmp_dynamic_key_info(priv, key, sta_id);
1216                 break;
1217         case ALG_TKIP:
1218                 ret = iwl4965_set_tkip_dynamic_key_info(priv, key, sta_id);
1219                 break;
1220         case ALG_WEP:
1221                 ret = iwl_set_wep_dynamic_key_info(priv, key, sta_id);
1222                 break;
1223         default:
1224                 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
1225                 ret = -EINVAL;
1226         }
1227
1228         return ret;
1229 }
1230
1231 static void iwl4965_clear_free_frames(struct iwl_priv *priv)
1232 {
1233         struct list_head *element;
1234
1235         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1236                        priv->frames_count);
1237
1238         while (!list_empty(&priv->free_frames)) {
1239                 element = priv->free_frames.next;
1240                 list_del(element);
1241                 kfree(list_entry(element, struct iwl4965_frame, list));
1242                 priv->frames_count--;
1243         }
1244
1245         if (priv->frames_count) {
1246                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1247                             priv->frames_count);
1248                 priv->frames_count = 0;
1249         }
1250 }
1251
1252 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv)
1253 {
1254         struct iwl4965_frame *frame;
1255         struct list_head *element;
1256         if (list_empty(&priv->free_frames)) {
1257                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1258                 if (!frame) {
1259                         IWL_ERROR("Could not allocate frame!\n");
1260                         return NULL;
1261                 }
1262
1263                 priv->frames_count++;
1264                 return frame;
1265         }
1266
1267         element = priv->free_frames.next;
1268         list_del(element);
1269         return list_entry(element, struct iwl4965_frame, list);
1270 }
1271
1272 static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame)
1273 {
1274         memset(frame, 0, sizeof(*frame));
1275         list_add(&frame->list, &priv->free_frames);
1276 }
1277
1278 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
1279                                 struct ieee80211_hdr *hdr,
1280                                 const u8 *dest, int left)
1281 {
1282
1283         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1284             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1285              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1286                 return 0;
1287
1288         if (priv->ibss_beacon->len > left)
1289                 return 0;
1290
1291         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1292
1293         return priv->ibss_beacon->len;
1294 }
1295
1296 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1297 {
1298         u8 i;
1299
1300         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1301              i = iwl4965_rates[i].next_ieee) {
1302                 if (rate_mask & (1 << i))
1303                         return iwl4965_rates[i].plcp;
1304         }
1305
1306         return IWL_RATE_INVALID;
1307 }
1308
1309 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
1310 {
1311         struct iwl4965_frame *frame;
1312         unsigned int frame_size;
1313         int rc;
1314         u8 rate;
1315
1316         frame = iwl4965_get_free_frame(priv);
1317
1318         if (!frame) {
1319                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1320                           "command.\n");
1321                 return -ENOMEM;
1322         }
1323
1324         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1325                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1326                                                 0xFF0);
1327                 if (rate == IWL_INVALID_RATE)
1328                         rate = IWL_RATE_6M_PLCP;
1329         } else {
1330                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1331                 if (rate == IWL_INVALID_RATE)
1332                         rate = IWL_RATE_1M_PLCP;
1333         }
1334
1335         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1336
1337         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1338                               &frame->u.cmd[0]);
1339
1340         iwl4965_free_frame(priv, frame);
1341
1342         return rc;
1343 }
1344
1345 /******************************************************************************
1346  *
1347  * Misc. internal state and helper functions
1348  *
1349  ******************************************************************************/
1350
1351 static void iwl4965_unset_hw_setting(struct iwl_priv *priv)
1352 {
1353         if (priv->hw_setting.shared_virt)
1354                 pci_free_consistent(priv->pci_dev,
1355                                     sizeof(struct iwl4965_shared),
1356                                     priv->hw_setting.shared_virt,
1357                                     priv->hw_setting.shared_phys);
1358 }
1359
1360 /**
1361  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1362  *
1363  * return : set the bit for each supported rate insert in ie
1364  */
1365 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1366                                     u16 basic_rate, int *left)
1367 {
1368         u16 ret_rates = 0, bit;
1369         int i;
1370         u8 *cnt = ie;
1371         u8 *rates = ie + 1;
1372
1373         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1374                 if (bit & supported_rate) {
1375                         ret_rates |= bit;
1376                         rates[*cnt] = iwl4965_rates[i].ieee |
1377                                 ((bit & basic_rate) ? 0x80 : 0x00);
1378                         (*cnt)++;
1379                         (*left)--;
1380                         if ((*left <= 0) ||
1381                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1382                                 break;
1383                 }
1384         }
1385
1386         return ret_rates;
1387 }
1388
1389 /**
1390  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1391  */
1392 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
1393                                   enum ieee80211_band band,
1394                                   struct ieee80211_mgmt *frame,
1395                                   int left, int is_direct)
1396 {
1397         int len = 0;
1398         u8 *pos = NULL;
1399         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1400 #ifdef CONFIG_IWL4965_HT
1401         const struct ieee80211_supported_band *sband =
1402                                                 iwl4965_get_hw_mode(priv, band);
1403 #endif /* CONFIG_IWL4965_HT */
1404
1405         /* Make sure there is enough space for the probe request,
1406          * two mandatory IEs and the data */
1407         left -= 24;
1408         if (left < 0)
1409                 return 0;
1410         len += 24;
1411
1412         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1413         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1414         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1415         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1416         frame->seq_ctrl = 0;
1417
1418         /* fill in our indirect SSID IE */
1419         /* ...next IE... */
1420
1421         left -= 2;
1422         if (left < 0)
1423                 return 0;
1424         len += 2;
1425         pos = &(frame->u.probe_req.variable[0]);
1426         *pos++ = WLAN_EID_SSID;
1427         *pos++ = 0;
1428
1429         /* fill in our direct SSID IE... */
1430         if (is_direct) {
1431                 /* ...next IE... */
1432                 left -= 2 + priv->essid_len;
1433                 if (left < 0)
1434                         return 0;
1435                 /* ... fill it in... */
1436                 *pos++ = WLAN_EID_SSID;
1437                 *pos++ = priv->essid_len;
1438                 memcpy(pos, priv->essid, priv->essid_len);
1439                 pos += priv->essid_len;
1440                 len += 2 + priv->essid_len;
1441         }
1442
1443         /* fill in supported rate */
1444         /* ...next IE... */
1445         left -= 2;
1446         if (left < 0)
1447                 return 0;
1448
1449         /* ... fill it in... */
1450         *pos++ = WLAN_EID_SUPP_RATES;
1451         *pos = 0;
1452
1453         /* exclude 60M rate */
1454         active_rates = priv->rates_mask;
1455         active_rates &= ~IWL_RATE_60M_MASK;
1456
1457         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1458
1459         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1460         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1461                         active_rate_basic, &left);
1462         active_rates &= ~ret_rates;
1463
1464         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1465                                  active_rate_basic, &left);
1466         active_rates &= ~ret_rates;
1467
1468         len += 2 + *pos;
1469         pos += (*pos) + 1;
1470         if (active_rates == 0)
1471                 goto fill_end;
1472
1473         /* fill in supported extended rate */
1474         /* ...next IE... */
1475         left -= 2;
1476         if (left < 0)
1477                 return 0;
1478         /* ... fill it in... */
1479         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1480         *pos = 0;
1481         iwl4965_supported_rate_to_ie(pos, active_rates,
1482                                  active_rate_basic, &left);
1483         if (*pos > 0)
1484                 len += 2 + *pos;
1485
1486 #ifdef CONFIG_IWL4965_HT
1487         if (sband && sband->ht_info.ht_supported) {
1488                 struct ieee80211_ht_cap *ht_cap;
1489                 pos += (*pos) + 1;
1490                 *pos++ = WLAN_EID_HT_CAPABILITY;
1491                 *pos++ = sizeof(struct ieee80211_ht_cap);
1492                 ht_cap = (struct ieee80211_ht_cap *)pos;
1493                 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1494                 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1495                 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1496                                             IEEE80211_HT_CAP_AMPDU_FACTOR) |
1497                                             ((sband->ht_info.ampdu_density << 2) &
1498                                             IEEE80211_HT_CAP_AMPDU_DENSITY);
1499                 len += 2 + sizeof(struct ieee80211_ht_cap);
1500         }
1501 #endif  /*CONFIG_IWL4965_HT */
1502
1503  fill_end:
1504         return (u16)len;
1505 }
1506
1507 /*
1508  * QoS  support
1509 */
1510 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
1511                                        struct iwl4965_qosparam_cmd *qos)
1512 {
1513
1514         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1515                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1516 }
1517
1518 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
1519 {
1520         unsigned long flags;
1521
1522         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1523                 return;
1524
1525         if (!priv->qos_data.qos_enable)
1526                 return;
1527
1528         spin_lock_irqsave(&priv->lock, flags);
1529         priv->qos_data.def_qos_parm.qos_flags = 0;
1530
1531         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1532             !priv->qos_data.qos_cap.q_AP.txop_request)
1533                 priv->qos_data.def_qos_parm.qos_flags |=
1534                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1535         if (priv->qos_data.qos_active)
1536                 priv->qos_data.def_qos_parm.qos_flags |=
1537                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1538
1539 #ifdef CONFIG_IWL4965_HT
1540         if (priv->current_ht_config.is_ht)
1541                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1542 #endif /* CONFIG_IWL4965_HT */
1543
1544         spin_unlock_irqrestore(&priv->lock, flags);
1545
1546         if (force || iwl_is_associated(priv)) {
1547                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1548                                 priv->qos_data.qos_active,
1549                                 priv->qos_data.def_qos_parm.qos_flags);
1550
1551                 iwl4965_send_qos_params_command(priv,
1552                                 &(priv->qos_data.def_qos_parm));
1553         }
1554 }
1555
1556 /*
1557  * Power management (not Tx power!) functions
1558  */
1559 #define MSEC_TO_USEC 1024
1560
1561 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1562 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1563 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1564 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1565                                      __constant_cpu_to_le32(X1), \
1566                                      __constant_cpu_to_le32(X2), \
1567                                      __constant_cpu_to_le32(X3), \
1568                                      __constant_cpu_to_le32(X4)}
1569
1570
1571 /* default power management (not Tx power) table values */
1572 /* for tim  0-10 */
1573 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1574         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1575         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1576         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1577         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1578         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1579         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1580 };
1581
1582 /* for tim > 10 */
1583 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1584         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1585         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1586                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1587         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1588                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1589         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1590                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1591         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1592         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1593                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1594 };
1595
1596 int iwl4965_power_init_handle(struct iwl_priv *priv)
1597 {
1598         int rc = 0, i;
1599         struct iwl4965_power_mgr *pow_data;
1600         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
1601         u16 pci_pm;
1602
1603         IWL_DEBUG_POWER("Initialize power \n");
1604
1605         pow_data = &(priv->power_data);
1606
1607         memset(pow_data, 0, sizeof(*pow_data));
1608
1609         pow_data->active_index = IWL_POWER_RANGE_0;
1610         pow_data->dtim_val = 0xffff;
1611
1612         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1613         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1614
1615         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1616         if (rc != 0)
1617                 return 0;
1618         else {
1619                 struct iwl4965_powertable_cmd *cmd;
1620
1621                 IWL_DEBUG_POWER("adjust power command flags\n");
1622
1623                 for (i = 0; i < IWL_POWER_AC; i++) {
1624                         cmd = &pow_data->pwr_range_0[i].cmd;
1625
1626                         if (pci_pm & 0x1)
1627                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1628                         else
1629                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1630                 }
1631         }
1632         return rc;
1633 }
1634
1635 static int iwl4965_update_power_cmd(struct iwl_priv *priv,
1636                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
1637 {
1638         int rc = 0, i;
1639         u8 skip;
1640         u32 max_sleep = 0;
1641         struct iwl4965_power_vec_entry *range;
1642         u8 period = 0;
1643         struct iwl4965_power_mgr *pow_data;
1644
1645         if (mode > IWL_POWER_INDEX_5) {
1646                 IWL_DEBUG_POWER("Error invalid power mode \n");
1647                 return -1;
1648         }
1649         pow_data = &(priv->power_data);
1650
1651         if (pow_data->active_index == IWL_POWER_RANGE_0)
1652                 range = &pow_data->pwr_range_0[0];
1653         else
1654                 range = &pow_data->pwr_range_1[1];
1655
1656         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
1657
1658 #ifdef IWL_MAC80211_DISABLE
1659         if (priv->assoc_network != NULL) {
1660                 unsigned long flags;
1661
1662                 period = priv->assoc_network->tim.tim_period;
1663         }
1664 #endif  /*IWL_MAC80211_DISABLE */
1665         skip = range[mode].no_dtim;
1666
1667         if (period == 0) {
1668                 period = 1;
1669                 skip = 0;
1670         }
1671
1672         if (skip == 0) {
1673                 max_sleep = period;
1674                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1675         } else {
1676                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1677                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1678                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1679         }
1680
1681         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1682                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1683                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1684         }
1685
1686         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1687         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1688         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1689         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1690                         le32_to_cpu(cmd->sleep_interval[0]),
1691                         le32_to_cpu(cmd->sleep_interval[1]),
1692                         le32_to_cpu(cmd->sleep_interval[2]),
1693                         le32_to_cpu(cmd->sleep_interval[3]),
1694                         le32_to_cpu(cmd->sleep_interval[4]));
1695
1696         return rc;
1697 }
1698
1699 static int iwl4965_send_power_mode(struct iwl_priv *priv, u32 mode)
1700 {
1701         u32 uninitialized_var(final_mode);
1702         int rc;
1703         struct iwl4965_powertable_cmd cmd;
1704
1705         /* If on battery, set to 3,
1706          * if plugged into AC power, set to CAM ("continuously aware mode"),
1707          * else user level */
1708         switch (mode) {
1709         case IWL_POWER_BATTERY:
1710                 final_mode = IWL_POWER_INDEX_3;
1711                 break;
1712         case IWL_POWER_AC:
1713                 final_mode = IWL_POWER_MODE_CAM;
1714                 break;
1715         default:
1716                 final_mode = mode;
1717                 break;
1718         }
1719
1720         cmd.keep_alive_beacons = 0;
1721
1722         iwl4965_update_power_cmd(priv, &cmd, final_mode);
1723
1724         rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
1725
1726         if (final_mode == IWL_POWER_MODE_CAM)
1727                 clear_bit(STATUS_POWER_PMI, &priv->status);
1728         else
1729                 set_bit(STATUS_POWER_PMI, &priv->status);
1730
1731         return rc;
1732 }
1733
1734 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1735 {
1736         /* Filter incoming packets to determine if they are targeted toward
1737          * this network, discarding packets coming from ourselves */
1738         switch (priv->iw_mode) {
1739         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
1740                 /* packets from our adapter are dropped (echo) */
1741                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
1742                         return 0;
1743                 /* {broad,multi}cast packets to our IBSS go through */
1744                 if (is_multicast_ether_addr(header->addr1))
1745                         return !compare_ether_addr(header->addr3, priv->bssid);
1746                 /* packets to our adapter go through */
1747                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1748         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
1749                 /* packets from our adapter are dropped (echo) */
1750                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
1751                         return 0;
1752                 /* {broad,multi}cast packets to our BSS go through */
1753                 if (is_multicast_ether_addr(header->addr1))
1754                         return !compare_ether_addr(header->addr2, priv->bssid);
1755                 /* packets to our adapter go through */
1756                 return !compare_ether_addr(header->addr1, priv->mac_addr);
1757         default:
1758                 break;
1759         }
1760
1761         return 1;
1762 }
1763
1764 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1765
1766 static const char *iwl4965_get_tx_fail_reason(u32 status)
1767 {
1768         switch (status & TX_STATUS_MSK) {
1769         case TX_STATUS_SUCCESS:
1770                 return "SUCCESS";
1771                 TX_STATUS_ENTRY(SHORT_LIMIT);
1772                 TX_STATUS_ENTRY(LONG_LIMIT);
1773                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
1774                 TX_STATUS_ENTRY(MGMNT_ABORT);
1775                 TX_STATUS_ENTRY(NEXT_FRAG);
1776                 TX_STATUS_ENTRY(LIFE_EXPIRE);
1777                 TX_STATUS_ENTRY(DEST_PS);
1778                 TX_STATUS_ENTRY(ABORTED);
1779                 TX_STATUS_ENTRY(BT_RETRY);
1780                 TX_STATUS_ENTRY(STA_INVALID);
1781                 TX_STATUS_ENTRY(FRAG_DROPPED);
1782                 TX_STATUS_ENTRY(TID_DISABLE);
1783                 TX_STATUS_ENTRY(FRAME_FLUSHED);
1784                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
1785                 TX_STATUS_ENTRY(TX_LOCKED);
1786                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
1787         }
1788
1789         return "UNKNOWN";
1790 }
1791
1792 /**
1793  * iwl4965_scan_cancel - Cancel any currently executing HW scan
1794  *
1795  * NOTE: priv->mutex is not required before calling this function
1796  */
1797 static int iwl4965_scan_cancel(struct iwl_priv *priv)
1798 {
1799         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1800                 clear_bit(STATUS_SCANNING, &priv->status);
1801                 return 0;
1802         }
1803
1804         if (test_bit(STATUS_SCANNING, &priv->status)) {
1805                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1806                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1807                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1808                         queue_work(priv->workqueue, &priv->abort_scan);
1809
1810                 } else
1811                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1812
1813                 return test_bit(STATUS_SCANNING, &priv->status);
1814         }
1815
1816         return 0;
1817 }
1818
1819 /**
1820  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1821  * @ms: amount of time to wait (in milliseconds) for scan to abort
1822  *
1823  * NOTE: priv->mutex must be held before calling this function
1824  */
1825 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1826 {
1827         unsigned long now = jiffies;
1828         int ret;
1829
1830         ret = iwl4965_scan_cancel(priv);
1831         if (ret && ms) {
1832                 mutex_unlock(&priv->mutex);
1833                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1834                                 test_bit(STATUS_SCANNING, &priv->status))
1835                         msleep(1);
1836                 mutex_lock(&priv->mutex);
1837
1838                 return test_bit(STATUS_SCANNING, &priv->status);
1839         }
1840
1841         return ret;
1842 }
1843
1844 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1845 {
1846         /* Reset ieee stats */
1847
1848         /* We don't reset the net_device_stats (ieee->stats) on
1849          * re-association */
1850
1851         priv->last_seq_num = -1;
1852         priv->last_frag_num = -1;
1853         priv->last_packet_time = 0;
1854
1855         iwl4965_scan_cancel(priv);
1856 }
1857
1858 #define MAX_UCODE_BEACON_INTERVAL       4096
1859 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1860
1861 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1862 {
1863         u16 new_val = 0;
1864         u16 beacon_factor = 0;
1865
1866         beacon_factor =
1867             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1868                 / MAX_UCODE_BEACON_INTERVAL;
1869         new_val = beacon_val / beacon_factor;
1870
1871         return cpu_to_le16(new_val);
1872 }
1873
1874 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1875 {
1876         u64 interval_tm_unit;
1877         u64 tsf, result;
1878         unsigned long flags;
1879         struct ieee80211_conf *conf = NULL;
1880         u16 beacon_int = 0;
1881
1882         conf = ieee80211_get_hw_conf(priv->hw);
1883
1884         spin_lock_irqsave(&priv->lock, flags);
1885         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1886         priv->rxon_timing.timestamp.dw[0] =
1887                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1888
1889         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1890
1891         tsf = priv->timestamp;
1892
1893         beacon_int = priv->beacon_int;
1894         spin_unlock_irqrestore(&priv->lock, flags);
1895
1896         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1897                 if (beacon_int == 0) {
1898                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1899                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1900                 } else {
1901                         priv->rxon_timing.beacon_interval =
1902                                 cpu_to_le16(beacon_int);
1903                         priv->rxon_timing.beacon_interval =
1904                             iwl4965_adjust_beacon_interval(
1905                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1906                 }
1907
1908                 priv->rxon_timing.atim_window = 0;
1909         } else {
1910                 priv->rxon_timing.beacon_interval =
1911                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1912                 /* TODO: we need to get atim_window from upper stack
1913                  * for now we set to 0 */
1914                 priv->rxon_timing.atim_window = 0;
1915         }
1916
1917         interval_tm_unit =
1918                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1919         result = do_div(tsf, interval_tm_unit);
1920         priv->rxon_timing.beacon_init_val =
1921             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1922
1923         IWL_DEBUG_ASSOC
1924             ("beacon interval %d beacon timer %d beacon tim %d\n",
1925                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1926                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1927                 le16_to_cpu(priv->rxon_timing.atim_window));
1928 }
1929
1930 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1931 {
1932         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1933                 IWL_ERROR("APs don't scan.\n");
1934                 return 0;
1935         }
1936
1937         if (!iwl_is_ready_rf(priv)) {
1938                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1939                 return -EIO;
1940         }
1941
1942         if (test_bit(STATUS_SCANNING, &priv->status)) {
1943                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1944                 return -EAGAIN;
1945         }
1946
1947         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1948                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1949                                "Queuing.\n");
1950                 return -EAGAIN;
1951         }
1952
1953         IWL_DEBUG_INFO("Starting scan...\n");
1954         priv->scan_bands = 2;
1955         set_bit(STATUS_SCANNING, &priv->status);
1956         priv->scan_start = jiffies;
1957         priv->scan_pass_start = priv->scan_start;
1958
1959         queue_work(priv->workqueue, &priv->request_scan);
1960
1961         return 0;
1962 }
1963
1964
1965 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1966                                           enum ieee80211_band band)
1967 {
1968         if (band == IEEE80211_BAND_5GHZ) {
1969                 priv->staging_rxon.flags &=
1970                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1971                       | RXON_FLG_CCK_MSK);
1972                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1973         } else {
1974                 /* Copied from iwl4965_bg_post_associate() */
1975                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1976                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1977                 else
1978                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1979
1980                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1981                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1982
1983                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1984                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1985                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1986         }
1987 }
1988
1989 /*
1990  * initialize rxon structure with default values from eeprom
1991  */
1992 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1993 {
1994         const struct iwl_channel_info *ch_info;
1995
1996         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1997
1998         switch (priv->iw_mode) {
1999         case IEEE80211_IF_TYPE_AP:
2000                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2001                 break;
2002
2003         case IEEE80211_IF_TYPE_STA:
2004                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2005                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2006                 break;
2007
2008         case IEEE80211_IF_TYPE_IBSS:
2009                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2010                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2011                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2012                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2013                 break;
2014
2015         case IEEE80211_IF_TYPE_MNTR:
2016                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2017                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2018                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2019                 break;
2020         default:
2021                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
2022                 break;
2023         }
2024
2025 #if 0
2026         /* TODO:  Figure out when short_preamble would be set and cache from
2027          * that */
2028         if (!hw_to_local(priv->hw)->short_preamble)
2029                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2030         else
2031                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2032 #endif
2033
2034         ch_info = iwl_get_channel_info(priv, priv->band,
2035                                        le16_to_cpu(priv->staging_rxon.channel));
2036
2037         if (!ch_info)
2038                 ch_info = &priv->channel_info[0];
2039
2040         /*
2041          * in some case A channels are all non IBSS
2042          * in this case force B/G channel
2043          */
2044         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2045             !(is_channel_ibss(ch_info)))
2046                 ch_info = &priv->channel_info[0];
2047
2048         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2049         priv->band = ch_info->band;
2050
2051         iwl4965_set_flags_for_phymode(priv, priv->band);
2052
2053         priv->staging_rxon.ofdm_basic_rates =
2054             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2055         priv->staging_rxon.cck_basic_rates =
2056             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2057
2058         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2059                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2060         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2061         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2062         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2063         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2064         iwl4965_set_rxon_chain(priv);
2065 }
2066
2067 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
2068 {
2069         if (mode == IEEE80211_IF_TYPE_IBSS) {
2070                 const struct iwl_channel_info *ch_info;
2071
2072                 ch_info = iwl_get_channel_info(priv,
2073                         priv->band,
2074                         le16_to_cpu(priv->staging_rxon.channel));
2075
2076                 if (!ch_info || !is_channel_ibss(ch_info)) {
2077                         IWL_ERROR("channel %d not IBSS channel\n",
2078                                   le16_to_cpu(priv->staging_rxon.channel));
2079                         return -EINVAL;
2080                 }
2081         }
2082
2083         priv->iw_mode = mode;
2084
2085         iwl4965_connection_init_rx_config(priv);
2086         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2087
2088         iwlcore_clear_stations_table(priv);
2089
2090         /* dont commit rxon if rf-kill is on*/
2091         if (!iwl_is_ready_rf(priv))
2092                 return -EAGAIN;
2093
2094         cancel_delayed_work(&priv->scan_check);
2095         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2096                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2097                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2098                 return -EAGAIN;
2099         }
2100
2101         iwl4965_commit_rxon(priv);
2102
2103         return 0;
2104 }
2105
2106 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2107                                       struct ieee80211_tx_control *ctl,
2108                                       struct iwl_cmd *cmd,
2109                                       struct sk_buff *skb_frag,
2110                                       int sta_id)
2111 {
2112         struct iwl4965_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
2113         struct iwl_wep_key *wepkey;
2114         int keyidx = 0;
2115
2116         BUG_ON(ctl->key_idx > 3);
2117
2118         switch (keyinfo->alg) {
2119         case ALG_CCMP:
2120                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2121                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2122                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2123                         cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
2124                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2125                 break;
2126
2127         case ALG_TKIP:
2128                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2129                 ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
2130                         IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
2131                 IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
2132                 break;
2133
2134         case ALG_WEP:
2135                 wepkey = &priv->wep_keys[ctl->key_idx];
2136                 cmd->cmd.tx.sec_ctl = 0;
2137                 if (priv->default_wep_key) {
2138                         /* the WEP key was sent as static */
2139                         keyidx = ctl->key_idx;
2140                         memcpy(&cmd->cmd.tx.key[3], wepkey->key,
2141                                                         wepkey->key_size);
2142                         if (wepkey->key_size == WEP_KEY_LEN_128)
2143                                 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2144                 } else {
2145                         /* the WEP key was sent as dynamic */
2146                         keyidx = keyinfo->keyidx;
2147                         memcpy(&cmd->cmd.tx.key[3], keyinfo->key,
2148                                                         keyinfo->keylen);
2149                         if (keyinfo->keylen == WEP_KEY_LEN_128)
2150                                 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2151                 }
2152
2153                 cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP |
2154                         (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
2155
2156                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2157                              "with key %d\n", keyidx);
2158                 break;
2159
2160         default:
2161                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2162                 break;
2163         }
2164 }
2165
2166 /*
2167  * handle build REPLY_TX command notification.
2168  */
2169 static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
2170                                   struct iwl_cmd *cmd,
2171                                   struct ieee80211_tx_control *ctrl,
2172                                   struct ieee80211_hdr *hdr,
2173                                   int is_unicast, u8 std_id)
2174 {
2175         __le16 *qc;
2176         u16 fc = le16_to_cpu(hdr->frame_control);
2177         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2178
2179         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2180         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2181                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2182                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2183                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2184                 if (ieee80211_is_probe_response(fc) &&
2185                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2186                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2187         } else {
2188                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2189                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2190         }
2191
2192         if (ieee80211_is_back_request(fc))
2193                 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2194
2195
2196         cmd->cmd.tx.sta_id = std_id;
2197         if (ieee80211_get_morefrag(hdr))
2198                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2199
2200         qc = ieee80211_get_qos_ctrl(hdr);
2201         if (qc) {
2202                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2203                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2204         } else
2205                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2206
2207         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2208                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2209                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2210         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2211                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2212                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2213         }
2214
2215         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2216                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2217
2218         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2219         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2220                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2221                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2222                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2223                 else
2224                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2225         } else {
2226                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2227         }
2228
2229         cmd->cmd.tx.driver_txop = 0;
2230         cmd->cmd.tx.tx_flags = tx_flags;
2231         cmd->cmd.tx.next_frame_len = 0;
2232 }
2233 static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2234 {
2235         /* 0 - mgmt, 1 - cnt, 2 - data */
2236         int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2237         priv->tx_stats[idx].cnt++;
2238         priv->tx_stats[idx].bytes += len;
2239 }
2240 /**
2241  * iwl4965_get_sta_id - Find station's index within station table
2242  *
2243  * If new IBSS station, create new entry in station table
2244  */
2245 static int iwl4965_get_sta_id(struct iwl_priv *priv,
2246                                 struct ieee80211_hdr *hdr)
2247 {
2248         int sta_id;
2249         u16 fc = le16_to_cpu(hdr->frame_control);
2250         DECLARE_MAC_BUF(mac);
2251
2252         /* If this frame is broadcast or management, use broadcast station id */
2253         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2254             is_multicast_ether_addr(hdr->addr1))
2255                 return priv->hw_setting.bcast_sta_id;
2256
2257         switch (priv->iw_mode) {
2258
2259         /* If we are a client station in a BSS network, use the special
2260          * AP station entry (that's the only station we communicate with) */
2261         case IEEE80211_IF_TYPE_STA:
2262                 return IWL_AP_ID;
2263
2264         /* If we are an AP, then find the station, or use BCAST */
2265         case IEEE80211_IF_TYPE_AP:
2266                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2267                 if (sta_id != IWL_INVALID_STATION)
2268                         return sta_id;
2269                 return priv->hw_setting.bcast_sta_id;
2270
2271         /* If this frame is going out to an IBSS network, find the station,
2272          * or create a new station table entry */
2273         case IEEE80211_IF_TYPE_IBSS:
2274                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2275                 if (sta_id != IWL_INVALID_STATION)
2276                         return sta_id;
2277
2278                 /* Create new station table entry */
2279                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2280                                                    0, CMD_ASYNC, NULL);
2281
2282                 if (sta_id != IWL_INVALID_STATION)
2283                         return sta_id;
2284
2285                 IWL_DEBUG_DROP("Station %s not in station map. "
2286                                "Defaulting to broadcast...\n",
2287                                print_mac(mac, hdr->addr1));
2288                 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2289                 return priv->hw_setting.bcast_sta_id;
2290
2291         default:
2292                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2293                 return priv->hw_setting.bcast_sta_id;
2294         }
2295 }
2296
2297 /*
2298  * start REPLY_TX command process
2299  */
2300 static int iwl4965_tx_skb(struct iwl_priv *priv,
2301                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2302 {
2303         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2304         struct iwl4965_tfd_frame *tfd;
2305         u32 *control_flags;
2306         int txq_id = ctl->queue;
2307         struct iwl4965_tx_queue *txq = NULL;
2308         struct iwl4965_queue *q = NULL;
2309         dma_addr_t phys_addr;
2310         dma_addr_t txcmd_phys;
2311         dma_addr_t scratch_phys;
2312         struct iwl_cmd *out_cmd = NULL;
2313         u16 len, idx, len_org;
2314         u8 id, hdr_len, unicast;
2315         u8 sta_id;
2316         u16 seq_number = 0;
2317         u16 fc;
2318         __le16 *qc;
2319         u8 wait_write_ptr = 0;
2320         unsigned long flags;
2321         int rc;
2322
2323         spin_lock_irqsave(&priv->lock, flags);
2324         if (iwl_is_rfkill(priv)) {
2325                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2326                 goto drop_unlock;
2327         }
2328
2329         if (!priv->vif) {
2330                 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2331                 goto drop_unlock;
2332         }
2333
2334         if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2335                 IWL_ERROR("ERROR: No TX rate available.\n");
2336                 goto drop_unlock;
2337         }
2338
2339         unicast = !is_multicast_ether_addr(hdr->addr1);
2340         id = 0;
2341
2342         fc = le16_to_cpu(hdr->frame_control);
2343
2344 #ifdef CONFIG_IWLWIFI_DEBUG
2345         if (ieee80211_is_auth(fc))
2346                 IWL_DEBUG_TX("Sending AUTH frame\n");
2347         else if (ieee80211_is_assoc_request(fc))
2348                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2349         else if (ieee80211_is_reassoc_request(fc))
2350                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2351 #endif
2352
2353         /* drop all data frame if we are not associated */
2354         if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2355            (!iwl_is_associated(priv) ||
2356             ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2357             !priv->assoc_station_added)) {
2358                 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2359                 goto drop_unlock;
2360         }
2361
2362         spin_unlock_irqrestore(&priv->lock, flags);
2363
2364         hdr_len = ieee80211_get_hdrlen(fc);
2365
2366         /* Find (or create) index into station table for destination station */
2367         sta_id = iwl4965_get_sta_id(priv, hdr);
2368         if (sta_id == IWL_INVALID_STATION) {
2369                 DECLARE_MAC_BUF(mac);
2370
2371                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2372                                print_mac(mac, hdr->addr1));
2373                 goto drop;
2374         }
2375
2376         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2377
2378         qc = ieee80211_get_qos_ctrl(hdr);
2379         if (qc) {
2380                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2381                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2382                                 IEEE80211_SCTL_SEQ;
2383                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2384                         (hdr->seq_ctrl &
2385                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2386                 seq_number += 0x10;
2387 #ifdef CONFIG_IWL4965_HT
2388                 /* aggregation is on for this <sta,tid> */
2389                 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2390                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2391                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2392 #endif /* CONFIG_IWL4965_HT */
2393         }
2394
2395         /* Descriptor for chosen Tx queue */
2396         txq = &priv->txq[txq_id];
2397         q = &txq->q;
2398
2399         spin_lock_irqsave(&priv->lock, flags);
2400
2401         /* Set up first empty TFD within this queue's circular TFD buffer */
2402         tfd = &txq->bd[q->write_ptr];
2403         memset(tfd, 0, sizeof(*tfd));
2404         control_flags = (u32 *) tfd;
2405         idx = get_cmd_index(q, q->write_ptr, 0);
2406
2407         /* Set up driver data for this TFD */
2408         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2409         txq->txb[q->write_ptr].skb[0] = skb;
2410         memcpy(&(txq->txb[q->write_ptr].status.control),
2411                ctl, sizeof(struct ieee80211_tx_control));
2412
2413         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2414         out_cmd = &txq->cmd[idx];
2415         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2416         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2417
2418         /*
2419          * Set up the Tx-command (not MAC!) header.
2420          * Store the chosen Tx queue and TFD index within the sequence field;
2421          * after Tx, uCode's Tx response will return this value so driver can
2422          * locate the frame within the tx queue and do post-tx processing.
2423          */
2424         out_cmd->hdr.cmd = REPLY_TX;
2425         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2426                                 INDEX_TO_SEQ(q->write_ptr)));
2427
2428         /* Copy MAC header from skb into command buffer */
2429         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2430
2431         /*
2432          * Use the first empty entry in this queue's command buffer array
2433          * to contain the Tx command and MAC header concatenated together
2434          * (payload data will be in another buffer).
2435          * Size of this varies, due to varying MAC header length.
2436          * If end is not dword aligned, we'll have 2 extra bytes at the end
2437          * of the MAC header (device reads on dword boundaries).
2438          * We'll tell device about this padding later.
2439          */
2440         len = priv->hw_setting.tx_cmd_len +
2441                 sizeof(struct iwl_cmd_header) + hdr_len;
2442
2443         len_org = len;
2444         len = (len + 3) & ~3;
2445
2446         if (len_org != len)
2447                 len_org = 1;
2448         else
2449                 len_org = 0;
2450
2451         /* Physical address of this Tx command's header (not MAC header!),
2452          * within command buffer array. */
2453         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2454                      offsetof(struct iwl_cmd, hdr);
2455
2456         /* Add buffer containing Tx command and MAC(!) header to TFD's
2457          * first entry */
2458         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2459
2460         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2461                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id);
2462
2463         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2464          * if any (802.11 null frames have no payload). */
2465         len = skb->len - hdr_len;
2466         if (len) {
2467                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2468                                            len, PCI_DMA_TODEVICE);
2469                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2470         }
2471
2472         /* Tell 4965 about any 2-byte padding after MAC header */
2473         if (len_org)
2474                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2475
2476         /* Total # bytes to be transmitted */
2477         len = (u16)skb->len;
2478         out_cmd->cmd.tx.len = cpu_to_le16(len);
2479
2480         /* TODO need this for burst mode later on */
2481         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2482
2483         /* set is_hcca to 0; it probably will never be implemented */
2484         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2485
2486         iwl_update_tx_stats(priv, fc, len);
2487
2488         scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
2489                 offsetof(struct iwl4965_tx_cmd, scratch);
2490         out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2491         out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2492
2493         if (!ieee80211_get_morefrag(hdr)) {
2494                 txq->need_update = 1;
2495                 if (qc) {
2496                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2497                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2498                 }
2499         } else {
2500                 wait_write_ptr = 1;
2501                 txq->need_update = 0;
2502         }
2503
2504         iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2505                            sizeof(out_cmd->cmd.tx));
2506
2507         iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2508                            ieee80211_get_hdrlen(fc));
2509
2510         /* Set up entry for this TFD in Tx byte-count array */
2511         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2512
2513         /* Tell device the write index *just past* this latest filled TFD */
2514         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2515         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2516         spin_unlock_irqrestore(&priv->lock, flags);
2517
2518         if (rc)
2519                 return rc;
2520
2521         if ((iwl4965_queue_space(q) < q->high_mark)
2522             && priv->mac80211_registered) {
2523                 if (wait_write_ptr) {
2524                         spin_lock_irqsave(&priv->lock, flags);
2525                         txq->need_update = 1;
2526                         iwl4965_tx_queue_update_write_ptr(priv, txq);
2527                         spin_unlock_irqrestore(&priv->lock, flags);
2528                 }
2529
2530                 ieee80211_stop_queue(priv->hw, ctl->queue);
2531         }
2532
2533         return 0;
2534
2535 drop_unlock:
2536         spin_unlock_irqrestore(&priv->lock, flags);
2537 drop:
2538         return -1;
2539 }
2540
2541 static void iwl4965_set_rate(struct iwl_priv *priv)
2542 {
2543         const struct ieee80211_supported_band *hw = NULL;
2544         struct ieee80211_rate *rate;
2545         int i;
2546
2547         hw = iwl4965_get_hw_mode(priv, priv->band);
2548         if (!hw) {
2549                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2550                 return;
2551         }
2552
2553         priv->active_rate = 0;
2554         priv->active_rate_basic = 0;
2555
2556         for (i = 0; i < hw->n_bitrates; i++) {
2557                 rate = &(hw->bitrates[i]);
2558                 if (rate->hw_value < IWL_RATE_COUNT)
2559                         priv->active_rate |= (1 << rate->hw_value);
2560         }
2561
2562         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2563                        priv->active_rate, priv->active_rate_basic);
2564
2565         /*
2566          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2567          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2568          * OFDM
2569          */
2570         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2571                 priv->staging_rxon.cck_basic_rates =
2572                     ((priv->active_rate_basic &
2573                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2574         else
2575                 priv->staging_rxon.cck_basic_rates =
2576                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2577
2578         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2579                 priv->staging_rxon.ofdm_basic_rates =
2580                     ((priv->active_rate_basic &
2581                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2582                       IWL_FIRST_OFDM_RATE) & 0xFF;
2583         else
2584                 priv->staging_rxon.ofdm_basic_rates =
2585                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2586 }
2587
2588 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2589 {
2590         unsigned long flags;
2591
2592         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2593                 return;
2594
2595         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2596                           disable_radio ? "OFF" : "ON");
2597
2598         if (disable_radio) {
2599                 iwl4965_scan_cancel(priv);
2600                 /* FIXME: This is a workaround for AP */
2601                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2602                         spin_lock_irqsave(&priv->lock, flags);
2603                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2604                                     CSR_UCODE_SW_BIT_RFKILL);
2605                         spin_unlock_irqrestore(&priv->lock, flags);
2606                         /* call the host command only if no hw rf-kill set */
2607                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2608                                 iwl4965_send_card_state(priv,
2609                                                         CARD_STATE_CMD_DISABLE,
2610                                                         0);
2611                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2612
2613                         /* make sure mac80211 stop sending Tx frame */
2614                         if (priv->mac80211_registered)
2615                                 ieee80211_stop_queues(priv->hw);
2616                 }
2617                 return;
2618         }
2619
2620         spin_lock_irqsave(&priv->lock, flags);
2621         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2622
2623         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2624         spin_unlock_irqrestore(&priv->lock, flags);
2625
2626         /* wake up ucode */
2627         msleep(10);
2628
2629         spin_lock_irqsave(&priv->lock, flags);
2630         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2631         if (!iwl_grab_nic_access(priv))
2632                 iwl_release_nic_access(priv);
2633         spin_unlock_irqrestore(&priv->lock, flags);
2634
2635         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2636                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2637                                   "disabled by HW switch\n");
2638                 return;
2639         }
2640
2641         queue_work(priv->workqueue, &priv->restart);
2642         return;
2643 }
2644
2645 void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2646                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2647 {
2648         u16 fc =
2649             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2650
2651         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2652                 return;
2653
2654         if (!(fc & IEEE80211_FCTL_PROTECTED))
2655                 return;
2656
2657         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2658         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2659         case RX_RES_STATUS_SEC_TYPE_TKIP:
2660                 /* The uCode has got a bad phase 1 Key, pushes the packet.
2661                  * Decryption will be done in SW. */
2662                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2663                     RX_RES_STATUS_BAD_KEY_TTAK)
2664                         break;
2665
2666                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2667                     RX_RES_STATUS_BAD_ICV_MIC)
2668                         stats->flag |= RX_FLAG_MMIC_ERROR;
2669         case RX_RES_STATUS_SEC_TYPE_WEP:
2670         case RX_RES_STATUS_SEC_TYPE_CCMP:
2671                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2672                     RX_RES_STATUS_DECRYPT_OK) {
2673                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2674                         stats->flag |= RX_FLAG_DECRYPTED;
2675                 }
2676                 break;
2677
2678         default:
2679                 break;
2680         }
2681 }
2682
2683
2684 #define IWL_PACKET_RETRY_TIME HZ
2685
2686 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2687 {
2688         u16 sc = le16_to_cpu(header->seq_ctrl);
2689         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2690         u16 frag = sc & IEEE80211_SCTL_FRAG;
2691         u16 *last_seq, *last_frag;
2692         unsigned long *last_time;
2693
2694         switch (priv->iw_mode) {
2695         case IEEE80211_IF_TYPE_IBSS:{
2696                 struct list_head *p;
2697                 struct iwl4965_ibss_seq *entry = NULL;
2698                 u8 *mac = header->addr2;
2699                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2700
2701                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2702                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
2703                         if (!compare_ether_addr(entry->mac, mac))
2704                                 break;
2705                 }
2706                 if (p == &priv->ibss_mac_hash[index]) {
2707                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2708                         if (!entry) {
2709                                 IWL_ERROR("Cannot malloc new mac entry\n");
2710                                 return 0;
2711                         }
2712                         memcpy(entry->mac, mac, ETH_ALEN);
2713                         entry->seq_num = seq;
2714                         entry->frag_num = frag;
2715                         entry->packet_time = jiffies;
2716                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
2717                         return 0;
2718                 }
2719                 last_seq = &entry->seq_num;
2720                 last_frag = &entry->frag_num;
2721                 last_time = &entry->packet_time;
2722                 break;
2723         }
2724         case IEEE80211_IF_TYPE_STA:
2725                 last_seq = &priv->last_seq_num;
2726                 last_frag = &priv->last_frag_num;
2727                 last_time = &priv->last_packet_time;
2728                 break;
2729         default:
2730                 return 0;
2731         }
2732         if ((*last_seq == seq) &&
2733             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
2734                 if (*last_frag == frag)
2735                         goto drop;
2736                 if (*last_frag + 1 != frag)
2737                         /* out-of-order fragment */
2738                         goto drop;
2739         } else
2740                 *last_seq = seq;
2741
2742         *last_frag = frag;
2743         *last_time = jiffies;
2744         return 0;
2745
2746  drop:
2747         return 1;
2748 }
2749
2750 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2751
2752 #include "iwl-spectrum.h"
2753
2754 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2755 #define BEACON_TIME_MASK_HIGH   0xFF000000
2756 #define TIME_UNIT               1024
2757
2758 /*
2759  * extended beacon time format
2760  * time in usec will be changed into a 32-bit value in 8:24 format
2761  * the high 1 byte is the beacon counts
2762  * the lower 3 bytes is the time in usec within one beacon interval
2763  */
2764
2765 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
2766 {
2767         u32 quot;
2768         u32 rem;
2769         u32 interval = beacon_interval * 1024;
2770
2771         if (!interval || !usec)
2772                 return 0;
2773
2774         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2775         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2776
2777         return (quot << 24) + rem;
2778 }
2779
2780 /* base is usually what we get from ucode with each received frame,
2781  * the same as HW timer counter counting down
2782  */
2783
2784 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2785 {
2786         u32 base_low = base & BEACON_TIME_MASK_LOW;
2787         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2788         u32 interval = beacon_interval * TIME_UNIT;
2789         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2790             (addon & BEACON_TIME_MASK_HIGH);
2791
2792         if (base_low > addon_low)
2793                 res += base_low - addon_low;
2794         else if (base_low < addon_low) {
2795                 res += interval + base_low - addon_low;
2796                 res += (1 << 24);
2797         } else
2798                 res += (1 << 24);
2799
2800         return cpu_to_le32(res);
2801 }
2802
2803 static int iwl4965_get_measurement(struct iwl_priv *priv,
2804                                struct ieee80211_measurement_params *params,
2805                                u8 type)
2806 {
2807         struct iwl4965_spectrum_cmd spectrum;
2808         struct iwl4965_rx_packet *res;
2809         struct iwl_host_cmd cmd = {
2810                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2811                 .data = (void *)&spectrum,
2812                 .meta.flags = CMD_WANT_SKB,
2813         };
2814         u32 add_time = le64_to_cpu(params->start_time);
2815         int rc;
2816         int spectrum_resp_status;
2817         int duration = le16_to_cpu(params->duration);
2818
2819         if (iwl_is_associated(priv))
2820                 add_time =
2821                     iwl4965_usecs_to_beacons(
2822                         le64_to_cpu(params->start_time) - priv->last_tsf,
2823                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2824
2825         memset(&spectrum, 0, sizeof(spectrum));
2826
2827         spectrum.channel_count = cpu_to_le16(1);
2828         spectrum.flags =
2829             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2830         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2831         cmd.len = sizeof(spectrum);
2832         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2833
2834         if (iwl_is_associated(priv))
2835                 spectrum.start_time =
2836                     iwl4965_add_beacon_time(priv->last_beacon_time,
2837                                 add_time,
2838                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2839         else
2840                 spectrum.start_time = 0;
2841
2842         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2843         spectrum.channels[0].channel = params->channel;
2844         spectrum.channels[0].type = type;
2845         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2846                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2847                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2848
2849         rc = iwl_send_cmd_sync(priv, &cmd);
2850         if (rc)
2851                 return rc;
2852
2853         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
2854         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2855                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2856                 rc = -EIO;
2857         }
2858
2859         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2860         switch (spectrum_resp_status) {
2861         case 0:         /* Command will be handled */
2862                 if (res->u.spectrum.id != 0xff) {
2863                         IWL_DEBUG_INFO
2864                             ("Replaced existing measurement: %d\n",
2865                              res->u.spectrum.id);
2866                         priv->measurement_status &= ~MEASUREMENT_READY;
2867                 }
2868                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2869                 rc = 0;
2870                 break;
2871
2872         case 1:         /* Command will not be handled */
2873                 rc = -EAGAIN;
2874                 break;
2875         }
2876
2877         dev_kfree_skb_any(cmd.meta.u.skb);
2878
2879         return rc;
2880 }
2881 #endif
2882
2883 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
2884                                  struct iwl4965_tx_info *tx_sta)
2885 {
2886
2887         tx_sta->status.ack_signal = 0;
2888         tx_sta->status.excessive_retries = 0;
2889         tx_sta->status.queue_length = 0;
2890         tx_sta->status.queue_number = 0;
2891
2892         if (in_interrupt())
2893                 ieee80211_tx_status_irqsafe(priv->hw,
2894                                             tx_sta->skb[0], &(tx_sta->status));
2895         else
2896                 ieee80211_tx_status(priv->hw,
2897                                     tx_sta->skb[0], &(tx_sta->status));
2898
2899         tx_sta->skb[0] = NULL;
2900 }
2901
2902 /**
2903  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
2904  *
2905  * When FW advances 'R' index, all entries between old and new 'R' index
2906  * need to be reclaimed. As result, some free space forms.  If there is
2907  * enough free space (> low mark), wake the stack that feeds us.
2908  */
2909 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
2910 {
2911         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
2912         struct iwl4965_queue *q = &txq->q;
2913         int nfreed = 0;
2914
2915         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
2916                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
2917                           "is out of range [0-%d] %d %d.\n", txq_id,
2918                           index, q->n_bd, q->write_ptr, q->read_ptr);
2919                 return 0;
2920         }
2921
2922         for (index = iwl_queue_inc_wrap(index, q->n_bd);
2923                 q->read_ptr != index;
2924                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2925                 if (txq_id != IWL_CMD_QUEUE_NUM) {
2926                         iwl4965_txstatus_to_ieee(priv,
2927                                         &(txq->txb[txq->q.read_ptr]));
2928                         iwl4965_hw_txq_free_tfd(priv, txq);
2929                 } else if (nfreed > 1) {
2930                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
2931                                         q->write_ptr, q->read_ptr);
2932                         queue_work(priv->workqueue, &priv->restart);
2933                 }
2934                 nfreed++;
2935         }
2936
2937 /*      if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
2938                         (txq_id != IWL_CMD_QUEUE_NUM) &&
2939                         priv->mac80211_registered)
2940                 ieee80211_wake_queue(priv->hw, txq_id); */
2941
2942
2943         return nfreed;
2944 }
2945
2946 static int iwl4965_is_tx_success(u32 status)
2947 {
2948         status &= TX_STATUS_MSK;
2949         return (status == TX_STATUS_SUCCESS)
2950             || (status == TX_STATUS_DIRECT_DONE);
2951 }
2952
2953 /******************************************************************************
2954  *
2955  * Generic RX handler implementations
2956  *
2957  ******************************************************************************/
2958 #ifdef CONFIG_IWL4965_HT
2959
2960 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
2961                                     struct ieee80211_hdr *hdr)
2962 {
2963         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
2964                 return IWL_AP_ID;
2965         else {
2966                 u8 *da = ieee80211_get_DA(hdr);
2967                 return iwl4965_hw_find_station(priv, da);
2968         }
2969 }
2970
2971 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
2972         struct iwl_priv *priv, int txq_id, int idx)
2973 {
2974         if (priv->txq[txq_id].txb[idx].skb[0])
2975                 return (struct ieee80211_hdr *)priv->txq[txq_id].
2976                                 txb[idx].skb[0]->data;
2977         return NULL;
2978 }
2979
2980 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
2981 {
2982         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
2983                                 tx_resp->frame_count);
2984         return le32_to_cpu(*scd_ssn) & MAX_SN;
2985
2986 }
2987
2988 /**
2989  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
2990  */
2991 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
2992                                       struct iwl4965_ht_agg *agg,
2993                                       struct iwl4965_tx_resp_agg *tx_resp,
2994                                       u16 start_idx)
2995 {
2996         u16 status;
2997         struct agg_tx_status *frame_status = &tx_resp->status;
2998         struct ieee80211_tx_status *tx_status = NULL;
2999         struct ieee80211_hdr *hdr = NULL;
3000         int i, sh;
3001         int txq_id, idx;
3002         u16 seq;
3003
3004         if (agg->wait_for_ba)
3005                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3006
3007         agg->frame_count = tx_resp->frame_count;
3008         agg->start_idx = start_idx;
3009         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3010         agg->bitmap = 0;
3011
3012         /* # frames attempted by Tx command */
3013         if (agg->frame_count == 1) {
3014                 /* Only one frame was attempted; no block-ack will arrive */
3015                 status = le16_to_cpu(frame_status[0].status);
3016                 seq  = le16_to_cpu(frame_status[0].sequence);
3017                 idx = SEQ_TO_INDEX(seq);
3018                 txq_id = SEQ_TO_QUEUE(seq);
3019
3020                 /* FIXME: code repetition */
3021                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3022                                    agg->frame_count, agg->start_idx, idx);
3023
3024                 tx_status = &(priv->txq[txq_id].txb[idx].status);
3025                 tx_status->retry_count = tx_resp->failure_frame;
3026                 tx_status->queue_number = status & 0xff;
3027                 tx_status->queue_length = tx_resp->failure_rts;
3028                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3029                 tx_status->flags = iwl4965_is_tx_success(status)?
3030                         IEEE80211_TX_STATUS_ACK : 0;
3031                 iwl4965_hwrate_to_tx_control(priv,
3032                                              le32_to_cpu(tx_resp->rate_n_flags),
3033                                              &tx_status->control);
3034                 /* FIXME: code repetition end */
3035
3036                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3037                                     status & 0xff, tx_resp->failure_frame);
3038                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3039                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3040
3041                 agg->wait_for_ba = 0;
3042         } else {
3043                 /* Two or more frames were attempted; expect block-ack */
3044                 u64 bitmap = 0;
3045                 int start = agg->start_idx;
3046
3047                 /* Construct bit-map of pending frames within Tx window */
3048                 for (i = 0; i < agg->frame_count; i++) {
3049                         u16 sc;
3050                         status = le16_to_cpu(frame_status[i].status);
3051                         seq  = le16_to_cpu(frame_status[i].sequence);
3052                         idx = SEQ_TO_INDEX(seq);
3053                         txq_id = SEQ_TO_QUEUE(seq);
3054
3055                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3056                                       AGG_TX_STATE_ABORT_MSK))
3057                                 continue;
3058
3059                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3060                                            agg->frame_count, txq_id, idx);
3061
3062                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3063
3064                         sc = le16_to_cpu(hdr->seq_ctrl);
3065                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3066                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3067                                           " idx=%d, seq_idx=%d, seq=%d\n",
3068                                           idx, SEQ_TO_SN(sc),
3069                                           hdr->seq_ctrl);
3070                                 return -1;
3071                         }
3072
3073                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3074                                            i, idx, SEQ_TO_SN(sc));
3075
3076                         sh = idx - start;
3077                         if (sh > 64) {
3078                                 sh = (start - idx) + 0xff;
3079                                 bitmap = bitmap << sh;
3080                                 sh = 0;
3081                                 start = idx;
3082                         } else if (sh < -64)
3083                                 sh  = 0xff - (start - idx);
3084                         else if (sh < 0) {
3085                                 sh = start - idx;
3086                                 start = idx;
3087                                 bitmap = bitmap << sh;
3088                                 sh = 0;
3089                         }
3090                         bitmap |= (1 << sh);
3091                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3092                                            start, (u32)(bitmap & 0xFFFFFFFF));
3093                 }
3094
3095                 agg->bitmap = bitmap;
3096                 agg->start_idx = start;
3097                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3098                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3099                                    agg->frame_count, agg->start_idx,
3100                                    (unsigned long long)agg->bitmap);
3101
3102                 if (bitmap)
3103                         agg->wait_for_ba = 1;
3104         }
3105         return 0;
3106 }
3107 #endif
3108
3109 /**
3110  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3111  */
3112 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
3113                             struct iwl4965_rx_mem_buffer *rxb)
3114 {
3115         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3116         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3117         int txq_id = SEQ_TO_QUEUE(sequence);
3118         int index = SEQ_TO_INDEX(sequence);
3119         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3120         struct ieee80211_tx_status *tx_status;
3121         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3122         u32  status = le32_to_cpu(tx_resp->status);
3123 #ifdef CONFIG_IWL4965_HT
3124         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3125         struct ieee80211_hdr *hdr;
3126         __le16 *qc;
3127 #endif
3128
3129         if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3130                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3131                           "is out of range [0-%d] %d %d\n", txq_id,
3132                           index, txq->q.n_bd, txq->q.write_ptr,
3133                           txq->q.read_ptr);
3134                 return;
3135         }
3136
3137 #ifdef CONFIG_IWL4965_HT
3138         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3139         qc = ieee80211_get_qos_ctrl(hdr);
3140
3141         if (qc)
3142                 tid = le16_to_cpu(*qc) & 0xf;
3143
3144         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3145         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3146                 IWL_ERROR("Station not known\n");
3147                 return;
3148         }
3149
3150         if (txq->sched_retry) {
3151                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3152                 struct iwl4965_ht_agg *agg = NULL;
3153
3154                 if (!qc)
3155                         return;
3156
3157                 agg = &priv->stations[sta_id].tid[tid].agg;
3158
3159                 iwl4965_tx_status_reply_tx(priv, agg,
3160                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3161
3162                 if ((tx_resp->frame_count == 1) &&
3163                     !iwl4965_is_tx_success(status)) {
3164                         /* TODO: send BAR */
3165                 }
3166
3167                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3168                         int freed;
3169                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3170                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3171                                            "%d index %d\n", scd_ssn , index);
3172                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3173                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3174
3175                         if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3176                             txq_id >= 0 && priv->mac80211_registered &&
3177                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3178                                 ieee80211_wake_queue(priv->hw, txq_id);
3179
3180                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3181                 }
3182         } else {
3183 #endif /* CONFIG_IWL4965_HT */
3184         tx_status = &(txq->txb[txq->q.read_ptr].status);
3185
3186         tx_status->retry_count = tx_resp->failure_frame;
3187         tx_status->queue_number = status;
3188         tx_status->queue_length = tx_resp->bt_kill_count;
3189         tx_status->queue_length |= tx_resp->failure_rts;
3190         tx_status->flags =
3191             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3192         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3193                                      &tx_status->control);
3194
3195         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3196                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3197                      status, le32_to_cpu(tx_resp->rate_n_flags),
3198                      tx_resp->failure_frame);
3199
3200         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3201         if (index != -1) {
3202                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3203 #ifdef CONFIG_IWL4965_HT
3204                 if (tid != MAX_TID_COUNT)
3205                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3206                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3207                         (txq_id >= 0) &&
3208                         priv->mac80211_registered)
3209                         ieee80211_wake_queue(priv->hw, txq_id);
3210                 if (tid != MAX_TID_COUNT)
3211                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3212 #endif
3213         }
3214 #ifdef CONFIG_IWL4965_HT
3215         }
3216 #endif /* CONFIG_IWL4965_HT */
3217
3218         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3219                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3220 }
3221
3222
3223 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
3224                                struct iwl4965_rx_mem_buffer *rxb)
3225 {
3226         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3227         struct iwl4965_alive_resp *palive;
3228         struct delayed_work *pwork;
3229
3230         palive = &pkt->u.alive_frame;
3231
3232         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3233                        "0x%01X 0x%01X\n",
3234                        palive->is_valid, palive->ver_type,
3235                        palive->ver_subtype);
3236
3237         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3238                 IWL_DEBUG_INFO("Initialization Alive received.\n");
3239                 memcpy(&priv->card_alive_init,
3240                        &pkt->u.alive_frame,
3241                        sizeof(struct iwl4965_init_alive_resp));
3242                 pwork = &priv->init_alive_start;
3243         } else {
3244                 IWL_DEBUG_INFO("Runtime Alive received.\n");
3245                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3246                        sizeof(struct iwl4965_alive_resp));
3247                 pwork = &priv->alive_start;
3248         }
3249
3250         /* We delay the ALIVE response by 5ms to
3251          * give the HW RF Kill time to activate... */
3252         if (palive->is_valid == UCODE_VALID_OK)
3253                 queue_delayed_work(priv->workqueue, pwork,
3254                                    msecs_to_jiffies(5));
3255         else
3256                 IWL_WARNING("uCode did not respond OK.\n");
3257 }
3258
3259 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
3260                                  struct iwl4965_rx_mem_buffer *rxb)
3261 {
3262         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3263
3264         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3265         return;
3266 }
3267
3268 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
3269                                struct iwl4965_rx_mem_buffer *rxb)
3270 {
3271         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3272
3273         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3274                 "seq 0x%04X ser 0x%08X\n",
3275                 le32_to_cpu(pkt->u.err_resp.error_type),
3276                 get_cmd_string(pkt->u.err_resp.cmd_id),
3277                 pkt->u.err_resp.cmd_id,
3278                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3279                 le32_to_cpu(pkt->u.err_resp.error_info));
3280 }
3281
3282 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3283
3284 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3285 {
3286         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3287         struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3288         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3289         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3290                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3291         rxon->channel = csa->channel;
3292         priv->staging_rxon.channel = csa->channel;
3293 }
3294
3295 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
3296                                           struct iwl4965_rx_mem_buffer *rxb)
3297 {
3298 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3299         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3300         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3301
3302         if (!report->state) {
3303                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3304                           "Spectrum Measure Notification: Start\n");
3305                 return;
3306         }
3307
3308         memcpy(&priv->measure_report, report, sizeof(*report));
3309         priv->measurement_status |= MEASUREMENT_READY;
3310 #endif
3311 }
3312
3313 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
3314                                   struct iwl4965_rx_mem_buffer *rxb)
3315 {
3316 #ifdef CONFIG_IWLWIFI_DEBUG
3317         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3318         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3319         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3320                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3321 #endif
3322 }
3323
3324 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3325                                              struct iwl4965_rx_mem_buffer *rxb)
3326 {
3327         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3328         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3329                         "notification for %s:\n",
3330                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3331         iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3332 }
3333
3334 static void iwl4965_bg_beacon_update(struct work_struct *work)
3335 {
3336         struct iwl_priv *priv =
3337                 container_of(work, struct iwl_priv, beacon_update);
3338         struct sk_buff *beacon;
3339
3340         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3341         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3342
3343         if (!beacon) {
3344                 IWL_ERROR("update beacon failed\n");
3345                 return;
3346         }
3347
3348         mutex_lock(&priv->mutex);
3349         /* new beacon skb is allocated every time; dispose previous.*/
3350         if (priv->ibss_beacon)
3351                 dev_kfree_skb(priv->ibss_beacon);
3352
3353         priv->ibss_beacon = beacon;
3354         mutex_unlock(&priv->mutex);
3355
3356         iwl4965_send_beacon_cmd(priv);
3357 }
3358
3359 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
3360                                 struct iwl4965_rx_mem_buffer *rxb)
3361 {
3362 #ifdef CONFIG_IWLWIFI_DEBUG
3363         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3364         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3365         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3366
3367         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3368                 "tsf %d %d rate %d\n",
3369                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3370                 beacon->beacon_notify_hdr.failure_frame,
3371                 le32_to_cpu(beacon->ibss_mgr_status),
3372                 le32_to_cpu(beacon->high_tsf),
3373                 le32_to_cpu(beacon->low_tsf), rate);
3374 #endif
3375
3376         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3377             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3378                 queue_work(priv->workqueue, &priv->beacon_update);
3379 }
3380
3381 /* Service response to REPLY_SCAN_CMD (0x80) */
3382 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
3383                               struct iwl4965_rx_mem_buffer *rxb)
3384 {
3385 #ifdef CONFIG_IWLWIFI_DEBUG
3386         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3387         struct iwl4965_scanreq_notification *notif =
3388             (struct iwl4965_scanreq_notification *)pkt->u.raw;
3389
3390         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3391 #endif
3392 }
3393
3394 /* Service SCAN_START_NOTIFICATION (0x82) */
3395 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
3396                                     struct iwl4965_rx_mem_buffer *rxb)
3397 {
3398         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3399         struct iwl4965_scanstart_notification *notif =
3400             (struct iwl4965_scanstart_notification *)pkt->u.raw;
3401         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3402         IWL_DEBUG_SCAN("Scan start: "
3403                        "%d [802.11%s] "
3404                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3405                        notif->channel,
3406                        notif->band ? "bg" : "a",
3407                        notif->tsf_high,
3408                        notif->tsf_low, notif->status, notif->beacon_timer);
3409 }
3410
3411 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3412 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
3413                                       struct iwl4965_rx_mem_buffer *rxb)
3414 {
3415         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3416         struct iwl4965_scanresults_notification *notif =
3417             (struct iwl4965_scanresults_notification *)pkt->u.raw;
3418
3419         IWL_DEBUG_SCAN("Scan ch.res: "
3420                        "%d [802.11%s] "
3421                        "(TSF: 0x%08X:%08X) - %d "
3422                        "elapsed=%lu usec (%dms since last)\n",
3423                        notif->channel,
3424                        notif->band ? "bg" : "a",
3425                        le32_to_cpu(notif->tsf_high),
3426                        le32_to_cpu(notif->tsf_low),
3427                        le32_to_cpu(notif->statistics[0]),
3428                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3429                        jiffies_to_msecs(elapsed_jiffies
3430                                         (priv->last_scan_jiffies, jiffies)));
3431
3432         priv->last_scan_jiffies = jiffies;
3433         priv->next_scan_jiffies = 0;
3434 }
3435
3436 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3437 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
3438                                        struct iwl4965_rx_mem_buffer *rxb)
3439 {
3440         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3441         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3442
3443         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3444                        scan_notif->scanned_channels,
3445                        scan_notif->tsf_low,
3446                        scan_notif->tsf_high, scan_notif->status);
3447
3448         /* The HW is no longer scanning */
3449         clear_bit(STATUS_SCAN_HW, &priv->status);
3450
3451         /* The scan completion notification came in, so kill that timer... */
3452         cancel_delayed_work(&priv->scan_check);
3453
3454         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3455                        (priv->scan_bands == 2) ? "2.4" : "5.2",
3456                        jiffies_to_msecs(elapsed_jiffies
3457                                         (priv->scan_pass_start, jiffies)));
3458
3459         /* Remove this scanned band from the list
3460          * of pending bands to scan */
3461         priv->scan_bands--;
3462
3463         /* If a request to abort was given, or the scan did not succeed
3464          * then we reset the scan state machine and terminate,
3465          * re-queuing another scan if one has been requested */
3466         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3467                 IWL_DEBUG_INFO("Aborted scan completed.\n");
3468                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3469         } else {
3470                 /* If there are more bands on this scan pass reschedule */
3471                 if (priv->scan_bands > 0)
3472                         goto reschedule;
3473         }
3474
3475         priv->last_scan_jiffies = jiffies;
3476         priv->next_scan_jiffies = 0;
3477         IWL_DEBUG_INFO("Setting scan to off\n");
3478
3479         clear_bit(STATUS_SCANNING, &priv->status);
3480
3481         IWL_DEBUG_INFO("Scan took %dms\n",
3482                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3483
3484         queue_work(priv->workqueue, &priv->scan_completed);
3485
3486         return;
3487
3488 reschedule:
3489         priv->scan_pass_start = jiffies;
3490         queue_work(priv->workqueue, &priv->request_scan);
3491 }
3492
3493 /* Handle notification from uCode that card's power state is changing
3494  * due to software, hardware, or critical temperature RFKILL */
3495 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
3496                                     struct iwl4965_rx_mem_buffer *rxb)
3497 {
3498         struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3499         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3500         unsigned long status = priv->status;
3501
3502         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3503                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3504                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3505
3506         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3507                      RF_CARD_DISABLED)) {
3508
3509                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3510                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3511
3512                 if (!iwl_grab_nic_access(priv)) {
3513                         iwl_write_direct32(
3514                                 priv, HBUS_TARG_MBX_C,
3515                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3516
3517                         iwl_release_nic_access(priv);
3518                 }
3519
3520                 if (!(flags & RXON_CARD_DISABLED)) {
3521                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3522                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3523                         if (!iwl_grab_nic_access(priv)) {
3524                                 iwl_write_direct32(
3525                                         priv, HBUS_TARG_MBX_C,
3526                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3527
3528                                 iwl_release_nic_access(priv);
3529                         }
3530                 }
3531
3532                 if (flags & RF_CARD_DISABLED) {
3533                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3534                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3535                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
3536                         if (!iwl_grab_nic_access(priv))
3537                                 iwl_release_nic_access(priv);
3538                 }
3539         }
3540
3541         if (flags & HW_CARD_DISABLED)
3542                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3543         else
3544                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3545
3546
3547         if (flags & SW_CARD_DISABLED)
3548                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3549         else
3550                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3551
3552         if (!(flags & RXON_CARD_DISABLED))
3553                 iwl4965_scan_cancel(priv);
3554
3555         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3556              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3557             (test_bit(STATUS_RF_KILL_SW, &status) !=
3558              test_bit(STATUS_RF_KILL_SW, &priv->status)))
3559                 queue_work(priv->workqueue, &priv->rf_kill);
3560         else
3561                 wake_up_interruptible(&priv->wait_command_queue);
3562 }
3563
3564 /**
3565  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3566  *
3567  * Setup the RX handlers for each of the reply types sent from the uCode
3568  * to the host.
3569  *
3570  * This function chains into the hardware specific files for them to setup
3571  * any hardware specific handlers as well.
3572  */
3573 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
3574 {
3575         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3576         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3577         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3578         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3579         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3580             iwl4965_rx_spectrum_measure_notif;
3581         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3582         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3583             iwl4965_rx_pm_debug_statistics_notif;
3584         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3585
3586         /*
3587          * The same handler is used for both the REPLY to a discrete
3588          * statistics request from the host as well as for the periodic
3589          * statistics notifications (after received beacons) from the uCode.
3590          */
3591         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3592         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3593
3594         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3595         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3596         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3597             iwl4965_rx_scan_results_notif;
3598         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3599             iwl4965_rx_scan_complete_notif;
3600         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3601         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3602
3603         /* Set up hardware specific Rx handlers */
3604         iwl4965_hw_rx_handler_setup(priv);
3605 }
3606
3607 /**
3608  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3609  * @rxb: Rx buffer to reclaim
3610  *
3611  * If an Rx buffer has an async callback associated with it the callback
3612  * will be executed.  The attached skb (if present) will only be freed
3613  * if the callback returns 1
3614  */
3615 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
3616                                 struct iwl4965_rx_mem_buffer *rxb)
3617 {
3618         struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
3619         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3620         int txq_id = SEQ_TO_QUEUE(sequence);
3621         int index = SEQ_TO_INDEX(sequence);
3622         int huge = sequence & SEQ_HUGE_FRAME;
3623         int cmd_index;
3624         struct iwl_cmd *cmd;
3625
3626         /* If a Tx command is being handled and it isn't in the actual
3627          * command queue then there a command routing bug has been introduced
3628          * in the queue management code. */
3629         if (txq_id != IWL_CMD_QUEUE_NUM)
3630                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3631                           txq_id, pkt->hdr.cmd);
3632         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3633
3634         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3635         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3636
3637         /* Input error checking is done when commands are added to queue. */
3638         if (cmd->meta.flags & CMD_WANT_SKB) {
3639                 cmd->meta.source->u.skb = rxb->skb;
3640                 rxb->skb = NULL;
3641         } else if (cmd->meta.u.callback &&
3642                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
3643                 rxb->skb = NULL;
3644
3645         iwl4965_tx_queue_reclaim(priv, txq_id, index);
3646
3647         if (!(cmd->meta.flags & CMD_ASYNC)) {
3648                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3649                 wake_up_interruptible(&priv->wait_command_queue);
3650         }
3651 }
3652
3653 /************************** RX-FUNCTIONS ****************************/
3654 /*
3655  * Rx theory of operation
3656  *
3657  * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
3658  * each of which point to Receive Buffers to be filled by 4965.  These get
3659  * used not only for Rx frames, but for any command response or notification
3660  * from the 4965.  The driver and 4965 manage the Rx buffers by means
3661  * of indexes into the circular buffer.
3662  *
3663  * Rx Queue Indexes
3664  * The host/firmware share two index registers for managing the Rx buffers.
3665  *
3666  * The READ index maps to the first position that the firmware may be writing
3667  * to -- the driver can read up to (but not including) this position and get
3668  * good data.
3669  * The READ index is managed by the firmware once the card is enabled.
3670  *
3671  * The WRITE index maps to the last position the driver has read from -- the
3672  * position preceding WRITE is the last slot the firmware can place a packet.
3673  *
3674  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3675  * WRITE = READ.
3676  *
3677  * During initialization, the host sets up the READ queue position to the first
3678  * INDEX position, and WRITE to the last (READ - 1 wrapped)
3679  *
3680  * When the firmware places a packet in a buffer, it will advance the READ index
3681  * and fire the RX interrupt.  The driver can then query the READ index and
3682  * process as many packets as possible, moving the WRITE index forward as it
3683  * resets the Rx queue buffers with new memory.
3684  *
3685  * The management in the driver is as follows:
3686  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
3687  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3688  *   to replenish the iwl->rxq->rx_free.
3689  * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
3690  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
3691  *   'processed' and 'read' driver indexes as well)
3692  * + A received packet is processed and handed to the kernel network stack,
3693  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
3694  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3695  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3696  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
3697  *   were enough free buffers and RX_STALLED is set it is cleared.
3698  *
3699  *
3700  * Driver sequence:
3701  *
3702  * iwl4965_rx_queue_alloc()   Allocates rx_free
3703  * iwl4965_rx_replenish()     Replenishes rx_free list from rx_used, and calls
3704  *                            iwl4965_rx_queue_restock
3705  * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
3706  *                            queue, updates firmware pointers, and updates
3707  *                            the WRITE index.  If insufficient rx_free buffers
3708  *                            are available, schedules iwl4965_rx_replenish
3709  *
3710  * -- enable interrupts --
3711  * ISR - iwl4965_rx()         Detach iwl4965_rx_mem_buffers from pool up to the
3712  *                            READ INDEX, detaching the SKB from the pool.
3713  *                            Moves the packet buffer from queue to rx_used.
3714  *                            Calls iwl4965_rx_queue_restock to refill any empty
3715  *                            slots.
3716  * ...
3717  *
3718  */
3719
3720 /**
3721  * iwl4965_rx_queue_space - Return number of free slots available in queue.
3722  */
3723 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
3724 {
3725         int s = q->read - q->write;
3726         if (s <= 0)
3727                 s += RX_QUEUE_SIZE;
3728         /* keep some buffer to not confuse full and empty queue */
3729         s -= 2;
3730         if (s < 0)
3731                 s = 0;
3732         return s;
3733 }
3734
3735 /**
3736  * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3737  */
3738 int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl4965_rx_queue *q)
3739 {
3740         u32 reg = 0;
3741         int rc = 0;
3742         unsigned long flags;
3743
3744         spin_lock_irqsave(&q->lock, flags);
3745
3746         if (q->need_update == 0)
3747                 goto exit_unlock;
3748
3749         /* If power-saving is in use, make sure device is awake */
3750         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3751                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3752
3753                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3754                         iwl_set_bit(priv, CSR_GP_CNTRL,
3755                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3756                         goto exit_unlock;
3757                 }
3758
3759                 rc = iwl_grab_nic_access(priv);
3760                 if (rc)
3761                         goto exit_unlock;
3762
3763                 /* Device expects a multiple of 8 */
3764                 iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3765                                      q->write & ~0x7);
3766                 iwl_release_nic_access(priv);
3767
3768         /* Else device is assumed to be awake */
3769         } else
3770                 /* Device expects a multiple of 8 */
3771                 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3772
3773
3774         q->need_update = 0;
3775
3776  exit_unlock:
3777         spin_unlock_irqrestore(&q->lock, flags);
3778         return rc;
3779 }
3780
3781 /**
3782  * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3783  */
3784 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl_priv *priv,
3785                                           dma_addr_t dma_addr)
3786 {
3787         return cpu_to_le32((u32)(dma_addr >> 8));
3788 }
3789
3790
3791 /**
3792  * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
3793  *
3794  * If there are slots in the RX queue that need to be restocked,
3795  * and we have free pre-allocated buffers, fill the ranks as much
3796  * as we can, pulling from rx_free.
3797  *
3798  * This moves the 'write' index forward to catch up with 'processed', and
3799  * also updates the memory address in the firmware to reference the new
3800  * target buffer.
3801  */
3802 static int iwl4965_rx_queue_restock(struct iwl_priv *priv)
3803 {
3804         struct iwl4965_rx_queue *rxq = &priv->rxq;
3805         struct list_head *element;
3806         struct iwl4965_rx_mem_buffer *rxb;
3807         unsigned long flags;
3808         int write, rc;
3809
3810         spin_lock_irqsave(&rxq->lock, flags);
3811         write = rxq->write & ~0x7;
3812         while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3813                 /* Get next free Rx buffer, remove from free list */
3814                 element = rxq->rx_free.next;
3815                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3816                 list_del(element);
3817
3818                 /* Point to Rx buffer via next RBD in circular buffer */
3819                 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3820                 rxq->queue[rxq->write] = rxb;
3821                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3822                 rxq->free_count--;
3823         }
3824         spin_unlock_irqrestore(&rxq->lock, flags);
3825         /* If the pre-allocated buffer pool is dropping low, schedule to
3826          * refill it */
3827         if (rxq->free_count <= RX_LOW_WATERMARK)
3828                 queue_work(priv->workqueue, &priv->rx_replenish);
3829
3830
3831         /* If we've added more space for the firmware to place data, tell it.
3832          * Increment device's write pointer in multiples of 8. */
3833         if ((write != (rxq->write & ~0x7))
3834             || (abs(rxq->write - rxq->read) > 7)) {
3835                 spin_lock_irqsave(&rxq->lock, flags);
3836                 rxq->need_update = 1;
3837                 spin_unlock_irqrestore(&rxq->lock, flags);
3838                 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
3839                 if (rc)
3840                         return rc;
3841         }
3842
3843         return 0;
3844 }
3845
3846 /**
3847  * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
3848  *
3849  * When moving to rx_free an SKB is allocated for the slot.
3850  *
3851  * Also restock the Rx queue via iwl4965_rx_queue_restock.
3852  * This is called as a scheduled work item (except for during initialization)
3853  */
3854 static void iwl4965_rx_allocate(struct iwl_priv *priv)
3855 {
3856         struct iwl4965_rx_queue *rxq = &priv->rxq;
3857         struct list_head *element;
3858         struct iwl4965_rx_mem_buffer *rxb;
3859         unsigned long flags;
3860         spin_lock_irqsave(&rxq->lock, flags);
3861         while (!list_empty(&rxq->rx_used)) {
3862                 element = rxq->rx_used.next;
3863                 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
3864
3865                 /* Alloc a new receive buffer */
3866                 rxb->skb =
3867                     alloc_skb(priv->hw_setting.rx_buf_size,
3868                                 __GFP_NOWARN | GFP_ATOMIC);
3869                 if (!rxb->skb) {
3870                         if (net_ratelimit())
3871                                 printk(KERN_CRIT DRV_NAME
3872                                        ": Can not allocate SKB buffers\n");
3873                         /* We don't reschedule replenish work here -- we will
3874                          * call the restock method and if it still needs
3875                          * more buffers it will schedule replenish */
3876                         break;
3877                 }
3878                 priv->alloc_rxb_skb++;
3879                 list_del(element);
3880
3881                 /* Get physical address of RB/SKB */
3882                 rxb->dma_addr =
3883                     pci_map_single(priv->pci_dev, rxb->skb->data,
3884                            priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
3885                 list_add_tail(&rxb->list, &rxq->rx_free);
3886                 rxq->free_count++;
3887         }
3888         spin_unlock_irqrestore(&rxq->lock, flags);
3889 }
3890
3891 /*
3892  * this should be called while priv->lock is locked
3893 */
3894 static void __iwl4965_rx_replenish(void *data)
3895 {
3896         struct iwl_priv *priv = data;
3897
3898         iwl4965_rx_allocate(priv);
3899         iwl4965_rx_queue_restock(priv);
3900 }
3901
3902
3903 void iwl4965_rx_replenish(void *data)
3904 {
3905         struct iwl_priv *priv = data;
3906         unsigned long flags;
3907
3908         iwl4965_rx_allocate(priv);
3909
3910         spin_lock_irqsave(&priv->lock, flags);
3911         iwl4965_rx_queue_restock(priv);
3912         spin_unlock_irqrestore(&priv->lock, flags);
3913 }
3914
3915 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3916  * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3917  * This free routine walks the list of POOL entries and if SKB is set to
3918  * non NULL it is unmapped and freed
3919  */
3920 static void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3921 {
3922         int i;
3923         for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3924                 if (rxq->pool[i].skb != NULL) {
3925                         pci_unmap_single(priv->pci_dev,
3926                                          rxq->pool[i].dma_addr,
3927                                          priv->hw_setting.rx_buf_size,
3928                                          PCI_DMA_FROMDEVICE);
3929                         dev_kfree_skb(rxq->pool[i].skb);
3930                 }
3931         }
3932
3933         pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3934                             rxq->dma_addr);
3935         rxq->bd = NULL;
3936 }
3937
3938 int iwl4965_rx_queue_alloc(struct iwl_priv *priv)
3939 {
3940         struct iwl4965_rx_queue *rxq = &priv->rxq;
3941         struct pci_dev *dev = priv->pci_dev;
3942         int i;
3943
3944         spin_lock_init(&rxq->lock);
3945         INIT_LIST_HEAD(&rxq->rx_free);
3946         INIT_LIST_HEAD(&rxq->rx_used);
3947
3948         /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3949         rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3950         if (!rxq->bd)
3951                 return -ENOMEM;
3952
3953         /* Fill the rx_used queue with _all_ of the Rx buffers */
3954         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3955                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3956
3957         /* Set us so that we have processed and used all buffers, but have
3958          * not restocked the Rx queue with fresh buffers */
3959         rxq->read = rxq->write = 0;
3960         rxq->free_count = 0;
3961         rxq->need_update = 0;
3962         return 0;
3963 }
3964
3965 void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq)
3966 {
3967         unsigned long flags;
3968         int i;
3969         spin_lock_irqsave(&rxq->lock, flags);
3970         INIT_LIST_HEAD(&rxq->rx_free);
3971         INIT_LIST_HEAD(&rxq->rx_used);
3972         /* Fill the rx_used queue with _all_ of the Rx buffers */
3973         for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3974                 /* In the reset function, these buffers may have been allocated
3975                  * to an SKB, so we need to unmap and free potential storage */
3976                 if (rxq->pool[i].skb != NULL) {
3977                         pci_unmap_single(priv->pci_dev,
3978                                          rxq->pool[i].dma_addr,
3979                                          priv->hw_setting.rx_buf_size,
3980                                          PCI_DMA_FROMDEVICE);
3981                         priv->alloc_rxb_skb--;
3982                         dev_kfree_skb(rxq->pool[i].skb);
3983                         rxq->pool[i].skb = NULL;
3984                 }
3985                 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3986         }
3987
3988         /* Set us so that we have processed and used all buffers, but have
3989          * not restocked the Rx queue with fresh buffers */
3990         rxq->read = rxq->write = 0;
3991         rxq->free_count = 0;
3992         spin_unlock_irqrestore(&rxq->lock, flags);
3993 }
3994
3995 /* Convert linear signal-to-noise ratio into dB */
3996 static u8 ratio2dB[100] = {
3997 /*       0   1   2   3   4   5   6   7   8   9 */
3998          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3999         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4000         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4001         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4002         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4003         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4004         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4005         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4006         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4007         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
4008 };
4009
4010 /* Calculates a relative dB value from a ratio of linear
4011  *   (i.e. not dB) signal levels.
4012  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4013 int iwl4965_calc_db_from_ratio(int sig_ratio)
4014 {
4015         /* 1000:1 or higher just report as 60 dB */
4016         if (sig_ratio >= 1000)
4017                 return 60;
4018
4019         /* 100:1 or higher, divide by 10 and use table,
4020          *   add 20 dB to make up for divide by 10 */
4021         if (sig_ratio >= 100)
4022                 return (20 + (int)ratio2dB[sig_ratio/10]);
4023
4024         /* We shouldn't see this */
4025         if (sig_ratio < 1)
4026                 return 0;
4027
4028         /* Use table for ratios 1:1 - 99:1 */
4029         return (int)ratio2dB[sig_ratio];
4030 }
4031
4032 #define PERFECT_RSSI (-20) /* dBm */
4033 #define WORST_RSSI (-95)   /* dBm */
4034 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4035
4036 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4037  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4038  *   about formulas used below. */
4039 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4040 {
4041         int sig_qual;
4042         int degradation = PERFECT_RSSI - rssi_dbm;
4043
4044         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4045          * as indicator; formula is (signal dbm - noise dbm).
4046          * SNR at or above 40 is a great signal (100%).
4047          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4048          * Weakest usable signal is usually 10 - 15 dB SNR. */
4049         if (noise_dbm) {
4050                 if (rssi_dbm - noise_dbm >= 40)
4051                         return 100;
4052                 else if (rssi_dbm < noise_dbm)
4053                         return 0;
4054                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4055
4056         /* Else use just the signal level.
4057          * This formula is a least squares fit of data points collected and
4058          *   compared with a reference system that had a percentage (%) display
4059          *   for signal quality. */
4060         } else
4061                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4062                             (15 * RSSI_RANGE + 62 * degradation)) /
4063                            (RSSI_RANGE * RSSI_RANGE);
4064
4065         if (sig_qual > 100)
4066                 sig_qual = 100;
4067         else if (sig_qual < 1)
4068                 sig_qual = 0;
4069
4070         return sig_qual;
4071 }
4072
4073 /**
4074  * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4075  *
4076  * Uses the priv->rx_handlers callback function array to invoke
4077  * the appropriate handlers, including command responses,
4078  * frame-received notifications, and other notifications.
4079  */
4080 static void iwl4965_rx_handle(struct iwl_priv *priv)
4081 {
4082         struct iwl4965_rx_mem_buffer *rxb;
4083         struct iwl4965_rx_packet *pkt;
4084         struct iwl4965_rx_queue *rxq = &priv->rxq;
4085         u32 r, i;
4086         int reclaim;
4087         unsigned long flags;
4088         u8 fill_rx = 0;
4089         u32 count = 8;
4090
4091         /* uCode's read index (stored in shared DRAM) indicates the last Rx
4092          * buffer that the driver may process (last buffer filled by ucode). */
4093         r = iwl4965_hw_get_rx_read(priv);
4094         i = rxq->read;
4095
4096         /* Rx interrupt, but nothing sent from uCode */
4097         if (i == r)
4098                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4099
4100         if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4101                 fill_rx = 1;
4102
4103         while (i != r) {
4104                 rxb = rxq->queue[i];
4105
4106                 /* If an RXB doesn't have a Rx queue slot associated with it,
4107                  * then a bug has been introduced in the queue refilling
4108                  * routines -- catch it here */
4109                 BUG_ON(rxb == NULL);
4110
4111                 rxq->queue[i] = NULL;
4112
4113                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4114                                             priv->hw_setting.rx_buf_size,
4115                                             PCI_DMA_FROMDEVICE);
4116                 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4117
4118                 /* Reclaim a command buffer only if this packet is a response
4119                  *   to a (driver-originated) command.
4120                  * If the packet (e.g. Rx frame) originated from uCode,
4121                  *   there is no command buffer to reclaim.
4122                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4123                  *   but apparently a few don't get set; catch them here. */
4124                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4125                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4126                         (pkt->hdr.cmd != REPLY_RX) &&
4127                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4128                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4129                         (pkt->hdr.cmd != REPLY_TX);
4130
4131                 /* Based on type of command response or notification,
4132                  *   handle those that need handling via function in
4133                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
4134                 if (priv->rx_handlers[pkt->hdr.cmd]) {
4135                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4136                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4137                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4138                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4139                 } else {
4140                         /* No handling needed */
4141                         IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4142                                 "r %d i %d No handler needed for %s, 0x%02x\n",
4143                                 r, i, get_cmd_string(pkt->hdr.cmd),
4144                                 pkt->hdr.cmd);
4145                 }
4146
4147                 if (reclaim) {
4148                         /* Invoke any callbacks, transfer the skb to caller, and
4149                          * fire off the (possibly) blocking iwl_send_cmd()
4150                          * as we reclaim the driver command queue */
4151                         if (rxb && rxb->skb)
4152                                 iwl4965_tx_cmd_complete(priv, rxb);
4153                         else
4154                                 IWL_WARNING("Claim null rxb?\n");
4155                 }
4156
4157                 /* For now we just don't re-use anything.  We can tweak this
4158                  * later to try and re-use notification packets and SKBs that
4159                  * fail to Rx correctly */
4160                 if (rxb->skb != NULL) {
4161                         priv->alloc_rxb_skb--;
4162                         dev_kfree_skb_any(rxb->skb);
4163                         rxb->skb = NULL;
4164                 }
4165
4166                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4167                                  priv->hw_setting.rx_buf_size,
4168                                  PCI_DMA_FROMDEVICE);
4169                 spin_lock_irqsave(&rxq->lock, flags);
4170                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4171                 spin_unlock_irqrestore(&rxq->lock, flags);
4172                 i = (i + 1) & RX_QUEUE_MASK;
4173                 /* If there are a lot of unused frames,
4174                  * restock the Rx queue so ucode wont assert. */
4175                 if (fill_rx) {
4176                         count++;
4177                         if (count >= 8) {
4178                                 priv->rxq.read = i;
4179                                 __iwl4965_rx_replenish(priv);
4180                                 count = 0;
4181                         }
4182                 }
4183         }
4184
4185         /* Backtrack one entry */
4186         priv->rxq.read = i;
4187         iwl4965_rx_queue_restock(priv);
4188 }
4189
4190 /**
4191  * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4192  */
4193 static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv,
4194                                   struct iwl4965_tx_queue *txq)
4195 {
4196         u32 reg = 0;
4197         int rc = 0;
4198         int txq_id = txq->q.id;
4199
4200         if (txq->need_update == 0)
4201                 return rc;
4202
4203         /* if we're trying to save power */
4204         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4205                 /* wake up nic if it's powered down ...
4206                  * uCode will wake up, and interrupt us again, so next
4207                  * time we'll skip this part. */
4208                 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4209
4210                 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4211                         IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4212                         iwl_set_bit(priv, CSR_GP_CNTRL,
4213                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4214                         return rc;
4215                 }
4216
4217                 /* restore this queue's parameters in nic hardware. */
4218                 rc = iwl_grab_nic_access(priv);
4219                 if (rc)
4220                         return rc;
4221                 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
4222                                      txq->q.write_ptr | (txq_id << 8));
4223                 iwl_release_nic_access(priv);
4224
4225         /* else not in power-save mode, uCode will never sleep when we're
4226          * trying to tx (during RFKILL, we're not trying to tx). */
4227         } else
4228                 iwl_write32(priv, HBUS_TARG_WRPTR,
4229                             txq->q.write_ptr | (txq_id << 8));
4230
4231         txq->need_update = 0;
4232
4233         return rc;
4234 }
4235
4236 #ifdef CONFIG_IWLWIFI_DEBUG
4237 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4238 {
4239         DECLARE_MAC_BUF(mac);
4240
4241         IWL_DEBUG_RADIO("RX CONFIG:\n");
4242         iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4243         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4244         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4245         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4246                         le32_to_cpu(rxon->filter_flags));
4247         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4248         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4249                         rxon->ofdm_basic_rates);
4250         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4251         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4252                         print_mac(mac, rxon->node_addr));
4253         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4254                         print_mac(mac, rxon->bssid_addr));
4255         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4256 }
4257 #endif
4258
4259 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
4260 {
4261         IWL_DEBUG_ISR("Enabling interrupts\n");
4262         set_bit(STATUS_INT_ENABLED, &priv->status);
4263         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4264 }
4265
4266 /* call this function to flush any scheduled tasklet */
4267 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
4268 {
4269         /* wait to make sure we flush pedding tasklet*/
4270         synchronize_irq(priv->pci_dev->irq);
4271         tasklet_kill(&priv->irq_tasklet);
4272 }
4273
4274 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
4275 {
4276         clear_bit(STATUS_INT_ENABLED, &priv->status);
4277
4278         /* disable interrupts from uCode/NIC to host */
4279         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4280
4281         /* acknowledge/clear/reset any interrupts still pending
4282          * from uCode or flow handler (Rx/Tx DMA) */
4283         iwl_write32(priv, CSR_INT, 0xffffffff);
4284         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4285         IWL_DEBUG_ISR("Disabled interrupts\n");
4286 }
4287
4288 static const char *desc_lookup(int i)
4289 {
4290         switch (i) {
4291         case 1:
4292                 return "FAIL";
4293         case 2:
4294                 return "BAD_PARAM";
4295         case 3:
4296                 return "BAD_CHECKSUM";
4297         case 4:
4298                 return "NMI_INTERRUPT";
4299         case 5:
4300                 return "SYSASSERT";
4301         case 6:
4302                 return "FATAL_ERROR";
4303         }
4304
4305         return "UNKNOWN";
4306 }
4307
4308 #define ERROR_START_OFFSET  (1 * sizeof(u32))
4309 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
4310
4311 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
4312 {
4313         u32 data2, line;
4314         u32 desc, time, count, base, data1;
4315         u32 blink1, blink2, ilink1, ilink2;
4316         int rc;
4317
4318         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4319
4320         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4321                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4322                 return;
4323         }
4324
4325         rc = iwl_grab_nic_access(priv);
4326         if (rc) {
4327                 IWL_WARNING("Can not read from adapter at this time.\n");
4328                 return;
4329         }
4330
4331         count = iwl_read_targ_mem(priv, base);
4332
4333         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4334                 IWL_ERROR("Start IWL Error Log Dump:\n");
4335                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4336         }
4337
4338         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
4339         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
4340         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
4341         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
4342         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
4343         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
4344         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
4345         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
4346         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
4347
4348         IWL_ERROR("Desc               Time       "
4349                   "data1      data2      line\n");
4350         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4351                   desc_lookup(desc), desc, time, data1, data2, line);
4352         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
4353         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4354                   ilink1, ilink2);
4355
4356         iwl_release_nic_access(priv);
4357 }
4358
4359 #define EVENT_START_OFFSET  (4 * sizeof(u32))
4360
4361 /**
4362  * iwl4965_print_event_log - Dump error event log to syslog
4363  *
4364  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
4365  */
4366 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
4367                                 u32 num_events, u32 mode)
4368 {
4369         u32 i;
4370         u32 base;       /* SRAM byte address of event log header */
4371         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4372         u32 ptr;        /* SRAM byte address of log data */
4373         u32 ev, time, data; /* event log data */
4374
4375         if (num_events == 0)
4376                 return;
4377
4378         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4379
4380         if (mode == 0)
4381                 event_size = 2 * sizeof(u32);
4382         else
4383                 event_size = 3 * sizeof(u32);
4384
4385         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4386
4387         /* "time" is actually "data" for mode 0 (no timestamp).
4388          * place event id # at far right for easier visual parsing. */
4389         for (i = 0; i < num_events; i++) {
4390                 ev = iwl_read_targ_mem(priv, ptr);
4391                 ptr += sizeof(u32);
4392                 time = iwl_read_targ_mem(priv, ptr);
4393                 ptr += sizeof(u32);
4394                 if (mode == 0)
4395                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4396                 else {
4397                         data = iwl_read_targ_mem(priv, ptr);
4398                         ptr += sizeof(u32);
4399                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4400                 }
4401         }
4402 }
4403
4404 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
4405 {
4406         int rc;
4407         u32 base;       /* SRAM byte address of event log header */
4408         u32 capacity;   /* event log capacity in # entries */
4409         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
4410         u32 num_wraps;  /* # times uCode wrapped to top of log */
4411         u32 next_entry; /* index of next entry to be written by uCode */
4412         u32 size;       /* # entries that we'll print */
4413
4414         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4415         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
4416                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4417                 return;
4418         }
4419
4420         rc = iwl_grab_nic_access(priv);
4421         if (rc) {
4422                 IWL_WARNING("Can not read from adapter at this time.\n");
4423                 return;
4424         }
4425
4426         /* event log header */
4427         capacity = iwl_read_targ_mem(priv, base);
4428         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4429         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4430         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
4431
4432         size = num_wraps ? capacity : next_entry;
4433
4434         /* bail out if nothing in log */
4435         if (size == 0) {
4436                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4437                 iwl_release_nic_access(priv);
4438                 return;
4439         }
4440
4441         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4442                   size, num_wraps);
4443
4444         /* if uCode has wrapped back to top of log, start at the oldest entry,
4445          * i.e the next one that uCode would fill. */
4446         if (num_wraps)
4447                 iwl4965_print_event_log(priv, next_entry,
4448                                     capacity - next_entry, mode);
4449
4450         /* (then/else) start at top of log */
4451         iwl4965_print_event_log(priv, 0, next_entry, mode);
4452
4453         iwl_release_nic_access(priv);
4454 }
4455
4456 /**
4457  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4458  */
4459 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
4460 {
4461         /* Set the FW error flag -- cleared on iwl4965_down */
4462         set_bit(STATUS_FW_ERROR, &priv->status);
4463
4464         /* Cancel currently queued command. */
4465         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4466
4467 #ifdef CONFIG_IWLWIFI_DEBUG
4468         if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4469                 iwl4965_dump_nic_error_log(priv);
4470                 iwl4965_dump_nic_event_log(priv);
4471                 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4472         }
4473 #endif
4474
4475         wake_up_interruptible(&priv->wait_command_queue);
4476
4477         /* Keep the restart process from trying to send host
4478          * commands by clearing the INIT status bit */
4479         clear_bit(STATUS_READY, &priv->status);
4480
4481         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4482                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4483                           "Restarting adapter due to uCode error.\n");
4484
4485                 if (iwl_is_associated(priv)) {
4486                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
4487                                sizeof(priv->recovery_rxon));
4488                         priv->error_recovering = 1;
4489                 }
4490                 queue_work(priv->workqueue, &priv->restart);
4491         }
4492 }
4493
4494 static void iwl4965_error_recovery(struct iwl_priv *priv)
4495 {
4496         unsigned long flags;
4497
4498         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4499                sizeof(priv->staging_rxon));
4500         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4501         iwl4965_commit_rxon(priv);
4502
4503         iwl4965_rxon_add_station(priv, priv->bssid, 1);
4504
4505         spin_lock_irqsave(&priv->lock, flags);
4506         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4507         priv->error_recovering = 0;
4508         spin_unlock_irqrestore(&priv->lock, flags);
4509 }
4510
4511 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
4512 {
4513         u32 inta, handled = 0;
4514         u32 inta_fh;
4515         unsigned long flags;
4516 #ifdef CONFIG_IWLWIFI_DEBUG
4517         u32 inta_mask;
4518 #endif
4519
4520         spin_lock_irqsave(&priv->lock, flags);
4521
4522         /* Ack/clear/reset pending uCode interrupts.
4523          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4524          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
4525         inta = iwl_read32(priv, CSR_INT);
4526         iwl_write32(priv, CSR_INT, inta);
4527
4528         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4529          * Any new interrupts that happen after this, either while we're
4530          * in this tasklet, or later, will show up in next ISR/tasklet. */
4531         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4532         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4533
4534 #ifdef CONFIG_IWLWIFI_DEBUG
4535         if (iwl_debug_level & IWL_DL_ISR) {
4536                 /* just for debug */
4537                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4538                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4539                               inta, inta_mask, inta_fh);
4540         }
4541 #endif
4542
4543         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4544          * atomic, make sure that inta covers all the interrupts that
4545          * we've discovered, even if FH interrupt came in just after
4546          * reading CSR_INT. */
4547         if (inta_fh & CSR49_FH_INT_RX_MASK)
4548                 inta |= CSR_INT_BIT_FH_RX;
4549         if (inta_fh & CSR49_FH_INT_TX_MASK)
4550                 inta |= CSR_INT_BIT_FH_TX;
4551
4552         /* Now service all interrupt bits discovered above. */
4553         if (inta & CSR_INT_BIT_HW_ERR) {
4554                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
4555
4556                 /* Tell the device to stop sending interrupts */
4557                 iwl4965_disable_interrupts(priv);
4558
4559                 iwl4965_irq_handle_error(priv);
4560
4561                 handled |= CSR_INT_BIT_HW_ERR;
4562
4563                 spin_unlock_irqrestore(&priv->lock, flags);
4564
4565                 return;
4566         }
4567
4568 #ifdef CONFIG_IWLWIFI_DEBUG
4569         if (iwl_debug_level & (IWL_DL_ISR)) {
4570                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4571                 if (inta & CSR_INT_BIT_SCD)
4572                         IWL_DEBUG_ISR("Scheduler finished to transmit "
4573                                       "the frame/frames.\n");
4574
4575                 /* Alive notification via Rx interrupt will do the real work */
4576                 if (inta & CSR_INT_BIT_ALIVE)
4577                         IWL_DEBUG_ISR("Alive interrupt\n");
4578         }
4579 #endif
4580         /* Safely ignore these bits for debug checks below */
4581         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4582
4583         /* HW RF KILL switch toggled */
4584         if (inta & CSR_INT_BIT_RF_KILL) {
4585                 int hw_rf_kill = 0;
4586                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4587                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4588                         hw_rf_kill = 1;
4589
4590                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4591                                 "RF_KILL bit toggled to %s.\n",
4592                                 hw_rf_kill ? "disable radio":"enable radio");
4593
4594                 /* Queue restart only if RF_KILL switch was set to "kill"
4595                  *   when we loaded driver, and is now set to "enable".
4596                  * After we're Alive, RF_KILL gets handled by
4597                  *   iwl4965_rx_card_state_notif() */
4598                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4599                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
4600                         queue_work(priv->workqueue, &priv->restart);
4601                 }
4602
4603                 handled |= CSR_INT_BIT_RF_KILL;
4604         }
4605
4606         /* Chip got too hot and stopped itself */
4607         if (inta & CSR_INT_BIT_CT_KILL) {
4608                 IWL_ERROR("Microcode CT kill error detected.\n");
4609                 handled |= CSR_INT_BIT_CT_KILL;
4610         }
4611
4612         /* Error detected by uCode */
4613         if (inta & CSR_INT_BIT_SW_ERR) {
4614                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
4615                           inta);
4616                 iwl4965_irq_handle_error(priv);
4617                 handled |= CSR_INT_BIT_SW_ERR;
4618         }
4619
4620         /* uCode wakes up after power-down sleep */
4621         if (inta & CSR_INT_BIT_WAKEUP) {
4622                 IWL_DEBUG_ISR("Wakeup interrupt\n");
4623                 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4624                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4625                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4626                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4627                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4628                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4629                 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4630
4631                 handled |= CSR_INT_BIT_WAKEUP;
4632         }
4633
4634         /* All uCode command responses, including Tx command responses,
4635          * Rx "responses" (frame-received notification), and other
4636          * notifications from uCode come through here*/
4637         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4638                 iwl4965_rx_handle(priv);
4639                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4640         }
4641
4642         if (inta & CSR_INT_BIT_FH_TX) {
4643                 IWL_DEBUG_ISR("Tx interrupt\n");
4644                 handled |= CSR_INT_BIT_FH_TX;
4645         }
4646
4647         if (inta & ~handled)
4648                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4649
4650         if (inta & ~CSR_INI_SET_MASK) {
4651                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4652                          inta & ~CSR_INI_SET_MASK);
4653                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
4654         }
4655
4656         /* Re-enable all interrupts */
4657         /* only Re-enable if diabled by irq */
4658         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4659                 iwl4965_enable_interrupts(priv);
4660
4661 #ifdef CONFIG_IWLWIFI_DEBUG
4662         if (iwl_debug_level & (IWL_DL_ISR)) {
4663                 inta = iwl_read32(priv, CSR_INT);
4664                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4665                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4666                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4667                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4668         }
4669 #endif
4670         spin_unlock_irqrestore(&priv->lock, flags);
4671 }
4672
4673 static irqreturn_t iwl4965_isr(int irq, void *data)
4674 {
4675         struct iwl_priv *priv = data;
4676         u32 inta, inta_mask;
4677         u32 inta_fh;
4678         if (!priv)
4679                 return IRQ_NONE;
4680
4681         spin_lock(&priv->lock);
4682
4683         /* Disable (but don't clear!) interrupts here to avoid
4684          *    back-to-back ISRs and sporadic interrupts from our NIC.
4685          * If we have something to service, the tasklet will re-enable ints.
4686          * If we *don't* have something, we'll re-enable before leaving here. */
4687         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
4688         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4689
4690         /* Discover which interrupts are active/pending */
4691         inta = iwl_read32(priv, CSR_INT);
4692         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4693
4694         /* Ignore interrupt if there's nothing in NIC to service.
4695          * This may be due to IRQ shared with another device,
4696          * or due to sporadic interrupts thrown from our NIC. */
4697         if (!inta && !inta_fh) {
4698                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4699                 goto none;
4700         }
4701
4702         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4703                 /* Hardware disappeared. It might have already raised
4704                  * an interrupt */
4705                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4706                 goto unplugged;
4707         }
4708
4709         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4710                       inta, inta_mask, inta_fh);
4711
4712         inta &= ~CSR_INT_BIT_SCD;
4713
4714         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
4715         if (likely(inta || inta_fh))
4716                 tasklet_schedule(&priv->irq_tasklet);
4717
4718  unplugged:
4719         spin_unlock(&priv->lock);
4720         return IRQ_HANDLED;
4721
4722  none:
4723         /* re-enable interrupts here since we don't have anything to service. */
4724         /* only Re-enable if diabled by irq */
4725         if (test_bit(STATUS_INT_ENABLED, &priv->status))
4726                 iwl4965_enable_interrupts(priv);
4727         spin_unlock(&priv->lock);
4728         return IRQ_NONE;
4729 }
4730
4731 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4732  * sending probe req.  This should be set long enough to hear probe responses
4733  * from more than one AP.  */
4734 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
4735 #define IWL_ACTIVE_DWELL_TIME_52    (10)
4736
4737 /* For faster active scanning, scan will move to the next channel if fewer than
4738  * PLCP_QUIET_THRESH packets are heard on this channel within
4739  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
4740  * time if it's a quiet channel (nothing responded to our probe, and there's
4741  * no other traffic).
4742  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4743 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
4744 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
4745
4746 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4747  * Must be set longer than active dwell time.
4748  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4749 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4750 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4751 #define IWL_PASSIVE_DWELL_BASE      (100)
4752 #define IWL_CHANNEL_TUNE_TIME       5
4753
4754 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
4755                                                 enum ieee80211_band band)
4756 {
4757         if (band == IEEE80211_BAND_5GHZ)
4758                 return IWL_ACTIVE_DWELL_TIME_52;
4759         else
4760                 return IWL_ACTIVE_DWELL_TIME_24;
4761 }
4762
4763 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
4764                                           enum ieee80211_band band)
4765 {
4766         u16 active = iwl4965_get_active_dwell_time(priv, band);
4767         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
4768             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4769             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4770
4771         if (iwl_is_associated(priv)) {
4772                 /* If we're associated, we clamp the maximum passive
4773                  * dwell time to be 98% of the beacon interval (minus
4774                  * 2 * channel tune time) */
4775                 passive = priv->beacon_int;
4776                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4777                         passive = IWL_PASSIVE_DWELL_BASE;
4778                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4779         }
4780
4781         if (passive <= active)
4782                 passive = active + 1;
4783
4784         return passive;
4785 }
4786
4787 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
4788                                          enum ieee80211_band band,
4789                                      u8 is_active, u8 direct_mask,
4790                                      struct iwl4965_scan_channel *scan_ch)
4791 {
4792         const struct ieee80211_channel *channels = NULL;
4793         const struct ieee80211_supported_band *sband;
4794         const struct iwl_channel_info *ch_info;
4795         u16 passive_dwell = 0;
4796         u16 active_dwell = 0;
4797         int added, i;
4798
4799         sband = iwl4965_get_hw_mode(priv, band);
4800         if (!sband)
4801                 return 0;
4802
4803         channels = sband->channels;
4804
4805         active_dwell = iwl4965_get_active_dwell_time(priv, band);
4806         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
4807
4808         for (i = 0, added = 0; i < sband->n_channels; i++) {
4809                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4810                         continue;
4811
4812                 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
4813                     le16_to_cpu(priv->active_rxon.channel)) {
4814                         if (iwl_is_associated(priv)) {
4815                                 IWL_DEBUG_SCAN
4816                                     ("Skipping current channel %d\n",
4817                                      le16_to_cpu(priv->active_rxon.channel));
4818                                 continue;
4819                         }
4820                 } else if (priv->only_active_channel)
4821                         continue;
4822
4823                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
4824
4825                 ch_info = iwl_get_channel_info(priv, band,
4826                                          scan_ch->channel);
4827                 if (!is_channel_valid(ch_info)) {
4828                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
4829                                        scan_ch->channel);
4830                         continue;
4831                 }
4832
4833                 if (!is_active || is_channel_passive(ch_info) ||
4834                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
4835                         scan_ch->type = 0;      /* passive */
4836                 else
4837                         scan_ch->type = 1;      /* active */
4838
4839                 if (scan_ch->type & 1)
4840                         scan_ch->type |= (direct_mask << 1);
4841
4842                 if (is_channel_narrow(ch_info))
4843                         scan_ch->type |= (1 << 7);
4844
4845                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4846                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4847
4848                 /* Set txpower levels to defaults */
4849                 scan_ch->tpc.dsp_atten = 110;
4850                 /* scan_pwr_info->tpc.dsp_atten; */
4851
4852                 /*scan_pwr_info->tpc.tx_gain; */
4853                 if (band == IEEE80211_BAND_5GHZ)
4854                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4855                 else {
4856                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4857                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4858                          * power level:
4859                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4860                          */
4861                 }
4862
4863                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4864                                scan_ch->channel,
4865                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4866                                (scan_ch->type & 1) ?
4867                                active_dwell : passive_dwell);
4868
4869                 scan_ch++;
4870                 added++;
4871         }
4872
4873         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4874         return added;
4875 }
4876
4877 static void iwl4965_init_hw_rates(struct iwl_priv *priv,
4878                               struct ieee80211_rate *rates)
4879 {
4880         int i;
4881
4882         for (i = 0; i < IWL_RATE_COUNT; i++) {
4883                 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
4884                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4885                 rates[i].hw_value_short = i;
4886                 rates[i].flags = 0;
4887                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4888                         /*
4889                          * If CCK != 1M then set short preamble rate flag.
4890                          */
4891                         rates[i].flags |=
4892                                 (iwl4965_rates[i].plcp == IWL_RATE_1M_PLCP) ?
4893                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
4894                 }
4895         }
4896 }
4897
4898 /**
4899  * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
4900  */
4901 int iwl4965_init_geos(struct iwl_priv *priv)
4902 {
4903         struct iwl_channel_info *ch;
4904         struct ieee80211_supported_band *sband;
4905         struct ieee80211_channel *channels;
4906         struct ieee80211_channel *geo_ch;
4907         struct ieee80211_rate *rates;
4908         int i = 0;
4909
4910         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4911             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4912                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4913                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4914                 return 0;
4915         }
4916
4917         channels = kzalloc(sizeof(struct ieee80211_channel) *
4918                            priv->channel_count, GFP_KERNEL);
4919         if (!channels)
4920                 return -ENOMEM;
4921
4922         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4923                         GFP_KERNEL);
4924         if (!rates) {
4925                 kfree(channels);
4926                 return -ENOMEM;
4927         }
4928
4929         /* 5.2GHz channels start after the 2.4GHz channels */
4930         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4931         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
4932         /* just OFDM */
4933         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4934         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4935
4936         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
4937
4938         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4939         sband->channels = channels;
4940         /* OFDM & CCK */
4941         sband->bitrates = rates;
4942         sband->n_bitrates = IWL_RATE_COUNT;
4943
4944         iwl4965_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
4945
4946         priv->ieee_channels = channels;
4947         priv->ieee_rates = rates;
4948
4949         iwl4965_init_hw_rates(priv, rates);
4950
4951         for (i = 0;  i < priv->channel_count; i++) {
4952                 ch = &priv->channel_info[i];
4953
4954                 /* FIXME: might be removed if scan is OK */
4955                 if (!is_channel_valid(ch))
4956                         continue;
4957
4958                 if (is_channel_a_band(ch))
4959                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4960                 else
4961                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4962
4963                 geo_ch = &sband->channels[sband->n_channels++];
4964
4965                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4966                 geo_ch->max_power = ch->max_power_avg;
4967                 geo_ch->max_antenna_gain = 0xff;
4968                 geo_ch->hw_value = ch->channel;
4969
4970                 if (is_channel_valid(ch)) {
4971                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4972                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4973
4974                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4975                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4976
4977                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4978                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4979
4980                         if (ch->max_power_avg > priv->max_channel_txpower_limit)
4981                                 priv->max_channel_txpower_limit =
4982                                     ch->max_power_avg;
4983                 } else {
4984                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4985                 }
4986
4987                 /* Save flags for reg domain usage */
4988                 geo_ch->orig_flags = geo_ch->flags;
4989
4990                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4991                                 ch->channel, geo_ch->center_freq,
4992                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4993                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4994                                 "restricted" : "valid",
4995                                  geo_ch->flags);
4996         }
4997
4998         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4999              priv->cfg->sku & IWL_SKU_A) {
5000                 printk(KERN_INFO DRV_NAME
5001                        ": Incorrectly detected BG card as ABG.  Please send "
5002                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5003                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
5004                 priv->cfg->sku &= ~IWL_SKU_A;
5005         }
5006
5007         printk(KERN_INFO DRV_NAME
5008                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5009                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5010                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5011
5012         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
5013                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
5014                         &priv->bands[IEEE80211_BAND_2GHZ];
5015         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
5016                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
5017                         &priv->bands[IEEE80211_BAND_5GHZ];
5018
5019         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5020
5021         return 0;
5022 }
5023
5024 /*
5025  * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5026  */
5027 void iwl4965_free_geos(struct iwl_priv *priv)
5028 {
5029         kfree(priv->ieee_channels);
5030         kfree(priv->ieee_rates);
5031         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5032 }
5033
5034 /******************************************************************************
5035  *
5036  * uCode download functions
5037  *
5038  ******************************************************************************/
5039
5040 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
5041 {
5042         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5043         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5044         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5045         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5046         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5047         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5048 }
5049
5050 /**
5051  * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5052  *     looking at all data.
5053  */
5054 static int iwl4965_verify_inst_full(struct iwl_priv *priv, __le32 *image,
5055                                  u32 len)
5056 {
5057         u32 val;
5058         u32 save_len = len;
5059         int rc = 0;
5060         u32 errcnt;
5061
5062         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5063
5064         rc = iwl_grab_nic_access(priv);
5065         if (rc)
5066                 return rc;
5067
5068         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5069
5070         errcnt = 0;
5071         for (; len > 0; len -= sizeof(u32), image++) {
5072                 /* read data comes through single port, auto-incr addr */
5073                 /* NOTE: Use the debugless read so we don't flood kernel log
5074                  * if IWL_DL_IO is set */
5075                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5076                 if (val != le32_to_cpu(*image)) {
5077                         IWL_ERROR("uCode INST section is invalid at "
5078                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5079                                   save_len - len, val, le32_to_cpu(*image));
5080                         rc = -EIO;
5081                         errcnt++;
5082                         if (errcnt >= 20)
5083                                 break;
5084                 }
5085         }
5086
5087         iwl_release_nic_access(priv);
5088
5089         if (!errcnt)
5090                 IWL_DEBUG_INFO
5091                     ("ucode image in INSTRUCTION memory is good\n");
5092
5093         return rc;
5094 }
5095
5096
5097 /**
5098  * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5099  *   using sample data 100 bytes apart.  If these sample points are good,
5100  *   it's a pretty good bet that everything between them is good, too.
5101  */
5102 static int iwl4965_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5103 {
5104         u32 val;
5105         int rc = 0;
5106         u32 errcnt = 0;
5107         u32 i;
5108
5109         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5110
5111         rc = iwl_grab_nic_access(priv);
5112         if (rc)
5113                 return rc;
5114
5115         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5116                 /* read data comes through single port, auto-incr addr */
5117                 /* NOTE: Use the debugless read so we don't flood kernel log
5118                  * if IWL_DL_IO is set */
5119                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5120                         i + RTC_INST_LOWER_BOUND);
5121                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5122                 if (val != le32_to_cpu(*image)) {
5123 #if 0 /* Enable this if you want to see details */
5124                         IWL_ERROR("uCode INST section is invalid at "
5125                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
5126                                   i, val, *image);
5127 #endif
5128                         rc = -EIO;
5129                         errcnt++;
5130                         if (errcnt >= 3)
5131                                 break;
5132                 }
5133         }
5134
5135         iwl_release_nic_access(priv);
5136
5137         return rc;
5138 }
5139
5140
5141 /**
5142  * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5143  *    and verify its contents
5144  */
5145 static int iwl4965_verify_ucode(struct iwl_priv *priv)
5146 {
5147         __le32 *image;
5148         u32 len;
5149         int rc = 0;
5150
5151         /* Try bootstrap */
5152         image = (__le32 *)priv->ucode_boot.v_addr;
5153         len = priv->ucode_boot.len;
5154         rc = iwl4965_verify_inst_sparse(priv, image, len);
5155         if (rc == 0) {
5156                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5157                 return 0;
5158         }
5159
5160         /* Try initialize */
5161         image = (__le32 *)priv->ucode_init.v_addr;
5162         len = priv->ucode_init.len;
5163         rc = iwl4965_verify_inst_sparse(priv, image, len);
5164         if (rc == 0) {
5165                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5166                 return 0;
5167         }
5168
5169         /* Try runtime/protocol */
5170         image = (__le32 *)priv->ucode_code.v_addr;
5171         len = priv->ucode_code.len;
5172         rc = iwl4965_verify_inst_sparse(priv, image, len);
5173         if (rc == 0) {
5174                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5175                 return 0;
5176         }
5177
5178         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5179
5180         /* Since nothing seems to match, show first several data entries in
5181          * instruction SRAM, so maybe visual inspection will give a clue.
5182          * Selection of bootstrap image (vs. other images) is arbitrary. */
5183         image = (__le32 *)priv->ucode_boot.v_addr;
5184         len = priv->ucode_boot.len;
5185         rc = iwl4965_verify_inst_full(priv, image, len);
5186
5187         return rc;
5188 }
5189
5190 static void iwl4965_nic_start(struct iwl_priv *priv)
5191 {
5192         /* Remove all resets to allow NIC to operate */
5193         iwl_write32(priv, CSR_RESET, 0);
5194 }
5195
5196
5197 /**
5198  * iwl4965_read_ucode - Read uCode images from disk file.
5199  *
5200  * Copy into buffers for card to fetch via bus-mastering
5201  */
5202 static int iwl4965_read_ucode(struct iwl_priv *priv)
5203 {
5204         struct iwl4965_ucode *ucode;
5205         int ret;
5206         const struct firmware *ucode_raw;
5207         const char *name = priv->cfg->fw_name;
5208         u8 *src;
5209         size_t len;
5210         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5211
5212         /* Ask kernel firmware_class module to get the boot firmware off disk.
5213          * request_firmware() is synchronous, file is in memory on return. */
5214         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5215         if (ret < 0) {
5216                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5217                                         name, ret);
5218                 goto error;
5219         }
5220
5221         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5222                        name, ucode_raw->size);
5223
5224         /* Make sure that we got at least our header! */
5225         if (ucode_raw->size < sizeof(*ucode)) {
5226                 IWL_ERROR("File size way too small!\n");
5227                 ret = -EINVAL;
5228                 goto err_release;
5229         }
5230
5231         /* Data from ucode file:  header followed by uCode images */
5232         ucode = (void *)ucode_raw->data;
5233
5234         ver = le32_to_cpu(ucode->ver);
5235         inst_size = le32_to_cpu(ucode->inst_size);
5236         data_size = le32_to_cpu(ucode->data_size);
5237         init_size = le32_to_cpu(ucode->init_size);
5238         init_data_size = le32_to_cpu(ucode->init_data_size);
5239         boot_size = le32_to_cpu(ucode->boot_size);
5240
5241         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5242         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5243                        inst_size);
5244         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5245                        data_size);
5246         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5247                        init_size);
5248         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5249                        init_data_size);
5250         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5251                        boot_size);
5252
5253         /* Verify size of file vs. image size info in file's header */
5254         if (ucode_raw->size < sizeof(*ucode) +
5255                 inst_size + data_size + init_size +
5256                 init_data_size + boot_size) {
5257
5258                 IWL_DEBUG_INFO("uCode file size %d too small\n",
5259                                (int)ucode_raw->size);
5260                 ret = -EINVAL;
5261                 goto err_release;
5262         }
5263
5264         /* Verify that uCode images will fit in card's SRAM */
5265         if (inst_size > IWL_MAX_INST_SIZE) {
5266                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5267                                inst_size);
5268                 ret = -EINVAL;
5269                 goto err_release;
5270         }
5271
5272         if (data_size > IWL_MAX_DATA_SIZE) {
5273                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5274                                 data_size);
5275                 ret = -EINVAL;
5276                 goto err_release;
5277         }
5278         if (init_size > IWL_MAX_INST_SIZE) {
5279                 IWL_DEBUG_INFO
5280                     ("uCode init instr len %d too large to fit in\n",
5281                       init_size);
5282                 ret = -EINVAL;
5283                 goto err_release;
5284         }
5285         if (init_data_size > IWL_MAX_DATA_SIZE) {
5286                 IWL_DEBUG_INFO
5287                     ("uCode init data len %d too large to fit in\n",
5288                       init_data_size);
5289                 ret = -EINVAL;
5290                 goto err_release;
5291         }
5292         if (boot_size > IWL_MAX_BSM_SIZE) {
5293                 IWL_DEBUG_INFO
5294                     ("uCode boot instr len %d too large to fit in\n",
5295                       boot_size);
5296                 ret = -EINVAL;
5297                 goto err_release;
5298         }
5299
5300         /* Allocate ucode buffers for card's bus-master loading ... */
5301
5302         /* Runtime instructions and 2 copies of data:
5303          * 1) unmodified from disk
5304          * 2) backup cache for save/restore during power-downs */
5305         priv->ucode_code.len = inst_size;
5306         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5307
5308         priv->ucode_data.len = data_size;
5309         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5310
5311         priv->ucode_data_backup.len = data_size;
5312         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5313
5314         /* Initialization instructions and data */
5315         if (init_size && init_data_size) {
5316                 priv->ucode_init.len = init_size;
5317                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5318
5319                 priv->ucode_init_data.len = init_data_size;
5320                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5321
5322                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5323                         goto err_pci_alloc;
5324         }
5325
5326         /* Bootstrap (instructions only, no data) */
5327         if (boot_size) {
5328                 priv->ucode_boot.len = boot_size;
5329                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5330
5331                 if (!priv->ucode_boot.v_addr)
5332                         goto err_pci_alloc;
5333         }
5334
5335         /* Copy images into buffers for card's bus-master reads ... */
5336
5337         /* Runtime instructions (first block of data in file) */
5338         src = &ucode->data[0];
5339         len = priv->ucode_code.len;
5340         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5341         memcpy(priv->ucode_code.v_addr, src, len);
5342         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5343                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5344
5345         /* Runtime data (2nd block)
5346          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
5347         src = &ucode->data[inst_size];
5348         len = priv->ucode_data.len;
5349         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5350         memcpy(priv->ucode_data.v_addr, src, len);
5351         memcpy(priv->ucode_data_backup.v_addr, src, len);
5352
5353         /* Initialization instructions (3rd block) */
5354         if (init_size) {
5355                 src = &ucode->data[inst_size + data_size];
5356                 len = priv->ucode_init.len;
5357                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5358                                 len);
5359                 memcpy(priv->ucode_init.v_addr, src, len);
5360         }
5361
5362         /* Initialization data (4th block) */
5363         if (init_data_size) {
5364                 src = &ucode->data[inst_size + data_size + init_size];
5365                 len = priv->ucode_init_data.len;
5366                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
5367                                len);
5368                 memcpy(priv->ucode_init_data.v_addr, src, len);
5369         }
5370
5371         /* Bootstrap instructions (5th block) */
5372         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5373         len = priv->ucode_boot.len;
5374         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
5375         memcpy(priv->ucode_boot.v_addr, src, len);
5376
5377         /* We have our copies now, allow OS release its copies */
5378         release_firmware(ucode_raw);
5379         return 0;
5380
5381  err_pci_alloc:
5382         IWL_ERROR("failed to allocate pci memory\n");
5383         ret = -ENOMEM;
5384         iwl4965_dealloc_ucode_pci(priv);
5385
5386  err_release:
5387         release_firmware(ucode_raw);
5388
5389  error:
5390         return ret;
5391 }
5392
5393
5394 /**
5395  * iwl4965_set_ucode_ptrs - Set uCode address location
5396  *
5397  * Tell initialization uCode where to find runtime uCode.
5398  *
5399  * BSM registers initially contain pointers to initialization uCode.
5400  * We need to replace them to load runtime uCode inst and data,
5401  * and to save runtime data when powering down.
5402  */
5403 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
5404 {
5405         dma_addr_t pinst;
5406         dma_addr_t pdata;
5407         int rc = 0;
5408         unsigned long flags;
5409
5410         /* bits 35:4 for 4965 */
5411         pinst = priv->ucode_code.p_addr >> 4;
5412         pdata = priv->ucode_data_backup.p_addr >> 4;
5413
5414         spin_lock_irqsave(&priv->lock, flags);
5415         rc = iwl_grab_nic_access(priv);
5416         if (rc) {
5417                 spin_unlock_irqrestore(&priv->lock, flags);
5418                 return rc;
5419         }
5420
5421         /* Tell bootstrap uCode where to find image to load */
5422         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5423         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5424         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5425                                  priv->ucode_data.len);
5426
5427         /* Inst bytecount must be last to set up, bit 31 signals uCode
5428          *   that all new ptr/size info is in place */
5429         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5430                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5431
5432         iwl_release_nic_access(priv);
5433
5434         spin_unlock_irqrestore(&priv->lock, flags);
5435
5436         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5437
5438         return rc;
5439 }
5440
5441 /**
5442  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
5443  *
5444  * Called after REPLY_ALIVE notification received from "initialize" uCode.
5445  *
5446  * The 4965 "initialize" ALIVE reply contains calibration data for:
5447  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
5448  *   (3945 does not contain this data).
5449  *
5450  * Tell "initialize" uCode to go ahead and load the runtime uCode.
5451 */
5452 static void iwl4965_init_alive_start(struct iwl_priv *priv)
5453 {
5454         /* Check alive response for "valid" sign from uCode */
5455         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5456                 /* We had an error bringing up the hardware, so take it
5457                  * all the way back down so we can try again */
5458                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5459                 goto restart;
5460         }
5461
5462         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5463          * This is a paranoid check, because we would not have gotten the
5464          * "initialize" alive if code weren't properly loaded.  */
5465         if (iwl4965_verify_ucode(priv)) {
5466                 /* Runtime instruction load was bad;
5467                  * take it all the way back down so we can try again */
5468                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5469                 goto restart;
5470         }
5471
5472         /* Calculate temperature */
5473         priv->temperature = iwl4965_get_temperature(priv);
5474
5475         /* Send pointers to protocol/runtime uCode image ... init code will
5476          * load and launch runtime uCode, which will send us another "Alive"
5477          * notification. */
5478         IWL_DEBUG_INFO("Initialization Alive received.\n");
5479         if (iwl4965_set_ucode_ptrs(priv)) {
5480                 /* Runtime instruction load won't happen;
5481                  * take it all the way back down so we can try again */
5482                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5483                 goto restart;
5484         }
5485         return;
5486
5487  restart:
5488         queue_work(priv->workqueue, &priv->restart);
5489 }
5490
5491
5492 /**
5493  * iwl4965_alive_start - called after REPLY_ALIVE notification received
5494  *                   from protocol/runtime uCode (initialization uCode's
5495  *                   Alive gets handled by iwl4965_init_alive_start()).
5496  */
5497 static void iwl4965_alive_start(struct iwl_priv *priv)
5498 {
5499         int ret = 0;
5500
5501         IWL_DEBUG_INFO("Runtime Alive received.\n");
5502
5503         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5504                 /* We had an error bringing up the hardware, so take it
5505                  * all the way back down so we can try again */
5506                 IWL_DEBUG_INFO("Alive failed.\n");
5507                 goto restart;
5508         }
5509
5510         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5511          * This is a paranoid check, because we would not have gotten the
5512          * "runtime" alive if code weren't properly loaded.  */
5513         if (iwl4965_verify_ucode(priv)) {
5514                 /* Runtime instruction load was bad;
5515                  * take it all the way back down so we can try again */
5516                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5517                 goto restart;
5518         }
5519
5520         iwlcore_clear_stations_table(priv);
5521
5522         ret = priv->cfg->ops->lib->alive_notify(priv);
5523         if (ret) {
5524                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
5525                             ret);
5526                 goto restart;
5527         }
5528
5529         /* After the ALIVE response, we can send host commands to 4965 uCode */
5530         set_bit(STATUS_ALIVE, &priv->status);
5531
5532         /* Clear out the uCode error bit if it is set */
5533         clear_bit(STATUS_FW_ERROR, &priv->status);
5534
5535         if (iwl_is_rfkill(priv))
5536                 return;
5537
5538         ieee80211_start_queues(priv->hw);
5539
5540         priv->active_rate = priv->rates_mask;
5541         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5542
5543         iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5544
5545         if (iwl_is_associated(priv)) {
5546                 struct iwl4965_rxon_cmd *active_rxon =
5547                                 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
5548
5549                 memcpy(&priv->staging_rxon, &priv->active_rxon,
5550                        sizeof(priv->staging_rxon));
5551                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5552         } else {
5553                 /* Initialize our rx_config data */
5554                 iwl4965_connection_init_rx_config(priv);
5555                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5556         }
5557
5558         /* Configure Bluetooth device coexistence support */
5559         iwl4965_send_bt_config(priv);
5560
5561         /* Configure the adapter for unassociated operation */
5562         iwl4965_commit_rxon(priv);
5563
5564         /* At this point, the NIC is initialized and operational */
5565         priv->notif_missed_beacons = 0;
5566
5567         iwl4965_rf_kill_ct_config(priv);
5568
5569         iwl_leds_register(priv);
5570
5571         IWL_DEBUG_INFO("ALIVE processing complete.\n");
5572         set_bit(STATUS_READY, &priv->status);
5573         wake_up_interruptible(&priv->wait_command_queue);
5574
5575         if (priv->error_recovering)
5576                 iwl4965_error_recovery(priv);
5577
5578         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
5579         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
5580         return;
5581
5582  restart:
5583         queue_work(priv->workqueue, &priv->restart);
5584 }
5585
5586 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
5587
5588 static void __iwl4965_down(struct iwl_priv *priv)
5589 {
5590         unsigned long flags;
5591         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5592         struct ieee80211_conf *conf = NULL;
5593
5594         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5595
5596         conf = ieee80211_get_hw_conf(priv->hw);
5597
5598         if (!exit_pending)
5599                 set_bit(STATUS_EXIT_PENDING, &priv->status);
5600
5601         iwl_leds_unregister(priv);
5602
5603         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
5604
5605         iwlcore_clear_stations_table(priv);
5606
5607         /* Unblock any waiting calls */
5608         wake_up_interruptible_all(&priv->wait_command_queue);
5609
5610         /* Wipe out the EXIT_PENDING status bit if we are not actually
5611          * exiting the module */
5612         if (!exit_pending)
5613                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5614
5615         /* stop and reset the on-board processor */
5616         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
5617
5618         /* tell the device to stop sending interrupts */
5619         spin_lock_irqsave(&priv->lock, flags);
5620         iwl4965_disable_interrupts(priv);
5621         spin_unlock_irqrestore(&priv->lock, flags);
5622         iwl_synchronize_irq(priv);
5623
5624         if (priv->mac80211_registered)
5625                 ieee80211_stop_queues(priv->hw);
5626
5627         /* If we have not previously called iwl4965_init() then
5628          * clear all bits but the RF Kill and SUSPEND bits and return */
5629         if (!iwl_is_init(priv)) {
5630                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5631                                         STATUS_RF_KILL_HW |
5632                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5633                                         STATUS_RF_KILL_SW |
5634                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5635                                         STATUS_GEO_CONFIGURED |
5636                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5637                                         STATUS_IN_SUSPEND;
5638                 goto exit;
5639         }
5640
5641         /* ...otherwise clear out all the status bits but the RF Kill and
5642          * SUSPEND bits and continue taking the NIC down. */
5643         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5644                                 STATUS_RF_KILL_HW |
5645                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5646                                 STATUS_RF_KILL_SW |
5647                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5648                                 STATUS_GEO_CONFIGURED |
5649                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5650                                 STATUS_IN_SUSPEND |
5651                         test_bit(STATUS_FW_ERROR, &priv->status) <<
5652                                 STATUS_FW_ERROR;
5653
5654         spin_lock_irqsave(&priv->lock, flags);
5655         iwl_clear_bit(priv, CSR_GP_CNTRL,
5656                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
5657         spin_unlock_irqrestore(&priv->lock, flags);
5658
5659         iwl4965_hw_txq_ctx_stop(priv);
5660         iwl4965_hw_rxq_stop(priv);
5661
5662         spin_lock_irqsave(&priv->lock, flags);
5663         if (!iwl_grab_nic_access(priv)) {
5664                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
5665                                          APMG_CLK_VAL_DMA_CLK_RQT);
5666                 iwl_release_nic_access(priv);
5667         }
5668         spin_unlock_irqrestore(&priv->lock, flags);
5669
5670         udelay(5);
5671
5672         iwl4965_hw_nic_stop_master(priv);
5673         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5674         iwl4965_hw_nic_reset(priv);
5675
5676  exit:
5677         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
5678
5679         if (priv->ibss_beacon)
5680                 dev_kfree_skb(priv->ibss_beacon);
5681         priv->ibss_beacon = NULL;
5682
5683         /* clear out any free frames */
5684         iwl4965_clear_free_frames(priv);
5685 }
5686
5687 static void iwl4965_down(struct iwl_priv *priv)
5688 {
5689         mutex_lock(&priv->mutex);
5690         __iwl4965_down(priv);
5691         mutex_unlock(&priv->mutex);
5692
5693         iwl4965_cancel_deferred_work(priv);
5694 }
5695
5696 #define MAX_HW_RESTARTS 5
5697
5698 static int __iwl4965_up(struct iwl_priv *priv)
5699 {
5700         int i;
5701         int ret;
5702
5703         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5704                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5705                 return -EIO;
5706         }
5707
5708         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5709                 IWL_WARNING("Radio disabled by SW RF kill (module "
5710                             "parameter)\n");
5711                 iwl_rfkill_set_hw_state(priv);
5712                 return -ENODEV;
5713         }
5714
5715         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5716                 IWL_ERROR("ucode not available for device bringup\n");
5717                 return -EIO;
5718         }
5719
5720         /* If platform's RF_KILL switch is NOT set to KILL */
5721         if (iwl_read32(priv, CSR_GP_CNTRL) &
5722                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5723                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5724         else {
5725                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5726                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5727                         iwl_rfkill_set_hw_state(priv);
5728                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5729                         return -ENODEV;
5730                 }
5731         }
5732
5733         iwl_rfkill_set_hw_state(priv);
5734         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5735
5736         ret = priv->cfg->ops->lib->hw_nic_init(priv);
5737         if (ret) {
5738                 IWL_ERROR("Unable to init nic\n");
5739                 return ret;
5740         }
5741
5742         /* make sure rfkill handshake bits are cleared */
5743         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5744         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5745                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5746
5747         /* clear (again), then enable host interrupts */
5748         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5749         iwl4965_enable_interrupts(priv);
5750
5751         /* really make sure rfkill handshake bits are cleared */
5752         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5753         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5754
5755         /* Copy original ucode data image from disk into backup cache.
5756          * This will be used to initialize the on-board processor's
5757          * data SRAM for a clean start when the runtime program first loads. */
5758         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5759                priv->ucode_data.len);
5760
5761         /* We return success when we resume from suspend and rf_kill is on. */
5762         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5763                 return 0;
5764
5765         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5766
5767                 iwlcore_clear_stations_table(priv);
5768
5769                 /* load bootstrap state machine,
5770                  * load bootstrap program into processor's memory,
5771                  * prepare to load the "initialize" uCode */
5772                 ret = priv->cfg->ops->lib->load_ucode(priv);
5773
5774                 if (ret) {
5775                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
5776                         continue;
5777                 }
5778
5779                 /* start card; "initialize" will load runtime ucode */
5780                 iwl4965_nic_start(priv);
5781
5782                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5783
5784                 return 0;
5785         }
5786
5787         set_bit(STATUS_EXIT_PENDING, &priv->status);
5788         __iwl4965_down(priv);
5789
5790         /* tried to restart and config the device for as long as our
5791          * patience could withstand */
5792         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5793         return -EIO;
5794 }
5795
5796
5797 /*****************************************************************************
5798  *
5799  * Workqueue callbacks
5800  *
5801  *****************************************************************************/
5802
5803 static void iwl4965_bg_init_alive_start(struct work_struct *data)
5804 {
5805         struct iwl_priv *priv =
5806             container_of(data, struct iwl_priv, init_alive_start.work);
5807
5808         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5809                 return;
5810
5811         mutex_lock(&priv->mutex);
5812         iwl4965_init_alive_start(priv);
5813         mutex_unlock(&priv->mutex);
5814 }
5815
5816 static void iwl4965_bg_alive_start(struct work_struct *data)
5817 {
5818         struct iwl_priv *priv =
5819             container_of(data, struct iwl_priv, alive_start.work);
5820
5821         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5822                 return;
5823
5824         mutex_lock(&priv->mutex);
5825         iwl4965_alive_start(priv);
5826         mutex_unlock(&priv->mutex);
5827 }
5828
5829 static void iwl4965_bg_rf_kill(struct work_struct *work)
5830 {
5831         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5832
5833         wake_up_interruptible(&priv->wait_command_queue);
5834
5835         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5836                 return;
5837
5838         mutex_lock(&priv->mutex);
5839
5840         if (!iwl_is_rfkill(priv)) {
5841                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5842                           "HW and/or SW RF Kill no longer active, restarting "
5843                           "device\n");
5844                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5845                         queue_work(priv->workqueue, &priv->restart);
5846         } else {
5847                 /* make sure mac80211 stop sending Tx frame */
5848                 if (priv->mac80211_registered)
5849                         ieee80211_stop_queues(priv->hw);
5850
5851                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5852                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5853                                           "disabled by SW switch\n");
5854                 else
5855                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5856                                     "Kill switch must be turned off for "
5857                                     "wireless networking to work.\n");
5858         }
5859         iwl_rfkill_set_hw_state(priv);
5860
5861         mutex_unlock(&priv->mutex);
5862 }
5863
5864 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5865
5866 static void iwl4965_bg_scan_check(struct work_struct *data)
5867 {
5868         struct iwl_priv *priv =
5869             container_of(data, struct iwl_priv, scan_check.work);
5870
5871         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5872                 return;
5873
5874         mutex_lock(&priv->mutex);
5875         if (test_bit(STATUS_SCANNING, &priv->status) ||
5876             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5877                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5878                           "Scan completion watchdog resetting adapter (%dms)\n",
5879                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5880
5881                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5882                         iwl4965_send_scan_abort(priv);
5883         }
5884         mutex_unlock(&priv->mutex);
5885 }
5886
5887 static void iwl4965_bg_request_scan(struct work_struct *data)
5888 {
5889         struct iwl_priv *priv =
5890             container_of(data, struct iwl_priv, request_scan);
5891         struct iwl_host_cmd cmd = {
5892                 .id = REPLY_SCAN_CMD,
5893                 .len = sizeof(struct iwl4965_scan_cmd),
5894                 .meta.flags = CMD_SIZE_HUGE,
5895         };
5896         struct iwl4965_scan_cmd *scan;
5897         struct ieee80211_conf *conf = NULL;
5898         u16 cmd_len;
5899         enum ieee80211_band band;
5900         u8 direct_mask;
5901         int ret = 0;
5902
5903         conf = ieee80211_get_hw_conf(priv->hw);
5904
5905         mutex_lock(&priv->mutex);
5906
5907         if (!iwl_is_ready(priv)) {
5908                 IWL_WARNING("request scan called when driver not ready.\n");
5909                 goto done;
5910         }
5911
5912         /* Make sure the scan wasn't cancelled before this queued work
5913          * was given the chance to run... */
5914         if (!test_bit(STATUS_SCANNING, &priv->status))
5915                 goto done;
5916
5917         /* This should never be called or scheduled if there is currently
5918          * a scan active in the hardware. */
5919         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5920                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5921                                "Ignoring second request.\n");
5922                 ret = -EIO;
5923                 goto done;
5924         }
5925
5926         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5927                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5928                 goto done;
5929         }
5930
5931         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5932                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
5933                 goto done;
5934         }
5935
5936         if (iwl_is_rfkill(priv)) {
5937                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5938                 goto done;
5939         }
5940
5941         if (!test_bit(STATUS_READY, &priv->status)) {
5942                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
5943                 goto done;
5944         }
5945
5946         if (!priv->scan_bands) {
5947                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5948                 goto done;
5949         }
5950
5951         if (!priv->scan) {
5952                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
5953                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5954                 if (!priv->scan) {
5955                         ret = -ENOMEM;
5956                         goto done;
5957                 }
5958         }
5959         scan = priv->scan;
5960         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
5961
5962         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5963         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5964
5965         if (iwl_is_associated(priv)) {
5966                 u16 interval = 0;
5967                 u32 extra;
5968                 u32 suspend_time = 100;
5969                 u32 scan_suspend_time = 100;
5970                 unsigned long flags;
5971
5972                 IWL_DEBUG_INFO("Scanning while associated...\n");
5973
5974                 spin_lock_irqsave(&priv->lock, flags);
5975                 interval = priv->beacon_int;
5976                 spin_unlock_irqrestore(&priv->lock, flags);
5977
5978                 scan->suspend_time = 0;
5979                 scan->max_out_time = cpu_to_le32(200 * 1024);
5980                 if (!interval)
5981                         interval = suspend_time;
5982
5983                 extra = (suspend_time / interval) << 22;
5984                 scan_suspend_time = (extra |
5985                     ((suspend_time % interval) * 1024));
5986                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5987                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5988                                scan_suspend_time, interval);
5989         }
5990
5991         /* We should add the ability for user to lock to PASSIVE ONLY */
5992         if (priv->one_direct_scan) {
5993                 IWL_DEBUG_SCAN
5994                     ("Kicking off one direct scan for '%s'\n",
5995                      iwl4965_escape_essid(priv->direct_ssid,
5996                                       priv->direct_ssid_len));
5997                 scan->direct_scan[0].id = WLAN_EID_SSID;
5998                 scan->direct_scan[0].len = priv->direct_ssid_len;
5999                 memcpy(scan->direct_scan[0].ssid,
6000                        priv->direct_ssid, priv->direct_ssid_len);
6001                 direct_mask = 1;
6002         } else if (!iwl_is_associated(priv) && priv->essid_len) {
6003                 scan->direct_scan[0].id = WLAN_EID_SSID;
6004                 scan->direct_scan[0].len = priv->essid_len;
6005                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6006                 direct_mask = 1;
6007         } else {
6008                 direct_mask = 0;
6009         }
6010
6011         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6012         scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6013         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6014
6015
6016         switch (priv->scan_bands) {
6017         case 2:
6018                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6019                 scan->tx_cmd.rate_n_flags =
6020                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6021                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6022
6023                 scan->good_CRC_th = 0;
6024                 band = IEEE80211_BAND_2GHZ;
6025                 break;
6026
6027         case 1:
6028                 scan->tx_cmd.rate_n_flags =
6029                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6030                                 RATE_MCS_ANT_B_MSK);
6031                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6032                 band = IEEE80211_BAND_5GHZ;
6033                 break;
6034
6035         default:
6036                 IWL_WARNING("Invalid scan band count\n");
6037                 goto done;
6038         }
6039
6040         /* We don't build a direct scan probe request; the uCode will do
6041          * that based on the direct_mask added to each channel entry */
6042         cmd_len = iwl4965_fill_probe_req(priv, band,
6043                                         (struct ieee80211_mgmt *)scan->data,
6044                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6045
6046         scan->tx_cmd.len = cpu_to_le16(cmd_len);
6047         /* select Rx chains */
6048
6049         /* Force use of chains B and C (0x6) for scan Rx.
6050          * Avoid A (0x1) because of its off-channel reception on A-band.
6051          * MIMO is not used here, but value is required to make uCode happy. */
6052         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6053                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6054                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6055                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6056
6057         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6058                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6059
6060         if (direct_mask) {
6061                 IWL_DEBUG_SCAN
6062                     ("Initiating direct scan for %s.\n",
6063                      iwl4965_escape_essid(priv->essid, priv->essid_len));
6064                 scan->channel_count =
6065                         iwl4965_get_channels_for_scan(
6066                                 priv, band, 1, /* active */
6067                                 direct_mask,
6068                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6069         } else {
6070                 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6071                 scan->channel_count =
6072                         iwl4965_get_channels_for_scan(
6073                                 priv, band, 0, /* passive */
6074                                 direct_mask,
6075                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6076         }
6077
6078         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6079             scan->channel_count * sizeof(struct iwl4965_scan_channel);
6080         cmd.data = scan;
6081         scan->len = cpu_to_le16(cmd.len);
6082
6083         set_bit(STATUS_SCAN_HW, &priv->status);
6084         ret = iwl_send_cmd_sync(priv, &cmd);
6085         if (ret)
6086                 goto done;
6087
6088         queue_delayed_work(priv->workqueue, &priv->scan_check,
6089                            IWL_SCAN_CHECK_WATCHDOG);
6090
6091         mutex_unlock(&priv->mutex);
6092         return;
6093
6094  done:
6095         /* inform mac80211 scan aborted */
6096         queue_work(priv->workqueue, &priv->scan_completed);
6097         mutex_unlock(&priv->mutex);
6098 }
6099
6100 static void iwl4965_bg_up(struct work_struct *data)
6101 {
6102         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6103
6104         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6105                 return;
6106
6107         mutex_lock(&priv->mutex);
6108         __iwl4965_up(priv);
6109         mutex_unlock(&priv->mutex);
6110 }
6111
6112 static void iwl4965_bg_restart(struct work_struct *data)
6113 {
6114         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6115
6116         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6117                 return;
6118
6119         iwl4965_down(priv);
6120         queue_work(priv->workqueue, &priv->up);
6121 }
6122
6123 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6124 {
6125         struct iwl_priv *priv =
6126             container_of(data, struct iwl_priv, rx_replenish);
6127
6128         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6129                 return;
6130
6131         mutex_lock(&priv->mutex);
6132         iwl4965_rx_replenish(priv);
6133         mutex_unlock(&priv->mutex);
6134 }
6135
6136 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6137
6138 static void iwl4965_bg_post_associate(struct work_struct *data)
6139 {
6140         struct iwl_priv *priv = container_of(data, struct iwl_priv,
6141                                              post_associate.work);
6142         struct ieee80211_conf *conf = NULL;
6143         int ret = 0;
6144         DECLARE_MAC_BUF(mac);
6145
6146         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6147                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6148                 return;
6149         }
6150
6151         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6152                         priv->assoc_id,
6153                         print_mac(mac, priv->active_rxon.bssid_addr));
6154
6155
6156         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6157                 return;
6158
6159         mutex_lock(&priv->mutex);
6160
6161         if (!priv->vif || !priv->is_open) {
6162                 mutex_unlock(&priv->mutex);
6163                 return;
6164         }
6165         iwl4965_scan_cancel_timeout(priv, 200);
6166
6167         conf = ieee80211_get_hw_conf(priv->hw);
6168
6169         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6170         iwl4965_commit_rxon(priv);
6171
6172         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6173         iwl4965_setup_rxon_timing(priv);
6174         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6175                               sizeof(priv->rxon_timing), &priv->rxon_timing);
6176         if (ret)
6177                 IWL_WARNING("REPLY_RXON_TIMING failed - "
6178                             "Attempting to continue.\n");
6179
6180         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6181
6182 #ifdef CONFIG_IWL4965_HT
6183         if (priv->current_ht_config.is_ht)
6184                 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6185 #endif /* CONFIG_IWL4965_HT*/
6186         iwl4965_set_rxon_chain(priv);
6187         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6188
6189         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6190                         priv->assoc_id, priv->beacon_int);
6191
6192         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6193                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6194         else
6195                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6196
6197         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6198                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6199                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6200                 else
6201                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6202
6203                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6204                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6205
6206         }
6207
6208         iwl4965_commit_rxon(priv);
6209
6210         switch (priv->iw_mode) {
6211         case IEEE80211_IF_TYPE_STA:
6212                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
6213                 break;
6214
6215         case IEEE80211_IF_TYPE_IBSS:
6216
6217                 /* clear out the station table */
6218                 iwlcore_clear_stations_table(priv);
6219
6220                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6221                 iwl4965_rxon_add_station(priv, priv->bssid, 0);
6222                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
6223                 iwl4965_send_beacon_cmd(priv);
6224
6225                 break;
6226
6227         default:
6228                 IWL_ERROR("%s Should not be called in %d mode\n",
6229                                 __FUNCTION__, priv->iw_mode);
6230                 break;
6231         }
6232
6233         iwl4965_sequence_reset(priv);
6234
6235 #ifdef CONFIG_IWL4965_SENSITIVITY
6236         /* Enable Rx differential gain and sensitivity calibrations */
6237         iwl4965_chain_noise_reset(priv);
6238         priv->start_calib = 1;
6239 #endif /* CONFIG_IWL4965_SENSITIVITY */
6240
6241         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6242                 priv->assoc_station_added = 1;
6243
6244         iwl4965_activate_qos(priv, 0);
6245
6246         /* we have just associated, don't start scan too early */
6247         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6248         mutex_unlock(&priv->mutex);
6249 }
6250
6251 static void iwl4965_bg_abort_scan(struct work_struct *work)
6252 {
6253         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
6254
6255         if (!iwl_is_ready(priv))
6256                 return;
6257
6258         mutex_lock(&priv->mutex);
6259
6260         set_bit(STATUS_SCAN_ABORTING, &priv->status);
6261         iwl4965_send_scan_abort(priv);
6262
6263         mutex_unlock(&priv->mutex);
6264 }
6265
6266 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6267
6268 static void iwl4965_bg_scan_completed(struct work_struct *work)
6269 {
6270         struct iwl_priv *priv =
6271             container_of(work, struct iwl_priv, scan_completed);
6272
6273         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6274
6275         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6276                 return;
6277
6278         if (test_bit(STATUS_CONF_PENDING, &priv->status))
6279                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6280
6281         ieee80211_scan_completed(priv->hw);
6282
6283         /* Since setting the TXPOWER may have been deferred while
6284          * performing the scan, fire one off */
6285         mutex_lock(&priv->mutex);
6286         iwl4965_hw_reg_send_txpower(priv);
6287         mutex_unlock(&priv->mutex);
6288 }
6289
6290 /*****************************************************************************
6291  *
6292  * mac80211 entry point functions
6293  *
6294  *****************************************************************************/
6295
6296 #define UCODE_READY_TIMEOUT     (2 * HZ)
6297
6298 static int iwl4965_mac_start(struct ieee80211_hw *hw)
6299 {
6300         struct iwl_priv *priv = hw->priv;
6301         int ret;
6302
6303         IWL_DEBUG_MAC80211("enter\n");
6304
6305         if (pci_enable_device(priv->pci_dev)) {
6306                 IWL_ERROR("Fail to pci_enable_device\n");
6307                 return -ENODEV;
6308         }
6309         pci_restore_state(priv->pci_dev);
6310         pci_enable_msi(priv->pci_dev);
6311
6312         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
6313                           DRV_NAME, priv);
6314         if (ret) {
6315                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6316                 goto out_disable_msi;
6317         }
6318
6319         /* we should be verifying the device is ready to be opened */
6320         mutex_lock(&priv->mutex);
6321
6322         memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
6323         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6324          * ucode filename and max sizes are card-specific. */
6325
6326         if (!priv->ucode_code.len) {
6327                 ret = iwl4965_read_ucode(priv);
6328                 if (ret) {
6329                         IWL_ERROR("Could not read microcode: %d\n", ret);
6330                         mutex_unlock(&priv->mutex);
6331                         goto out_release_irq;
6332                 }
6333         }
6334
6335         ret = __iwl4965_up(priv);
6336
6337         mutex_unlock(&priv->mutex);
6338
6339         if (ret)
6340                 goto out_release_irq;
6341
6342         IWL_DEBUG_INFO("Start UP work done.\n");
6343
6344         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6345                 return 0;
6346
6347         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6348          * mac80211 will not be run successfully. */
6349         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6350                         test_bit(STATUS_READY, &priv->status),
6351                         UCODE_READY_TIMEOUT);
6352         if (!ret) {
6353                 if (!test_bit(STATUS_READY, &priv->status)) {
6354                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6355                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
6356                         ret = -ETIMEDOUT;
6357                         goto out_release_irq;
6358                 }
6359         }
6360
6361         priv->is_open = 1;
6362         IWL_DEBUG_MAC80211("leave\n");
6363         return 0;
6364
6365 out_release_irq:
6366         free_irq(priv->pci_dev->irq, priv);
6367 out_disable_msi:
6368         pci_disable_msi(priv->pci_dev);
6369         pci_disable_device(priv->pci_dev);
6370         priv->is_open = 0;
6371         IWL_DEBUG_MAC80211("leave - failed\n");
6372         return ret;
6373 }
6374
6375 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
6376 {
6377         struct iwl_priv *priv = hw->priv;
6378
6379         IWL_DEBUG_MAC80211("enter\n");
6380
6381         if (!priv->is_open) {
6382                 IWL_DEBUG_MAC80211("leave - skip\n");
6383                 return;
6384         }
6385
6386         priv->is_open = 0;
6387
6388         if (iwl_is_ready_rf(priv)) {
6389                 /* stop mac, cancel any scan request and clear
6390                  * RXON_FILTER_ASSOC_MSK BIT
6391                  */
6392                 mutex_lock(&priv->mutex);
6393                 iwl4965_scan_cancel_timeout(priv, 100);
6394                 cancel_delayed_work(&priv->post_associate);
6395                 mutex_unlock(&priv->mutex);
6396         }
6397
6398         iwl4965_down(priv);
6399
6400         flush_workqueue(priv->workqueue);
6401         free_irq(priv->pci_dev->irq, priv);
6402         pci_disable_msi(priv->pci_dev);
6403         pci_save_state(priv->pci_dev);
6404         pci_disable_device(priv->pci_dev);
6405
6406         IWL_DEBUG_MAC80211("leave\n");
6407 }
6408
6409 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6410                       struct ieee80211_tx_control *ctl)
6411 {
6412         struct iwl_priv *priv = hw->priv;
6413
6414         IWL_DEBUG_MAC80211("enter\n");
6415
6416         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6417                 IWL_DEBUG_MAC80211("leave - monitor\n");
6418                 return -1;
6419         }
6420
6421         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6422                      ctl->tx_rate->bitrate);
6423
6424         if (iwl4965_tx_skb(priv, skb, ctl))
6425                 dev_kfree_skb_any(skb);
6426
6427         IWL_DEBUG_MAC80211("leave\n");
6428         return 0;
6429 }
6430
6431 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
6432                                  struct ieee80211_if_init_conf *conf)
6433 {
6434         struct iwl_priv *priv = hw->priv;
6435         unsigned long flags;
6436         DECLARE_MAC_BUF(mac);
6437
6438         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6439
6440         if (priv->vif) {
6441                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6442                 return -EOPNOTSUPP;
6443         }
6444
6445         spin_lock_irqsave(&priv->lock, flags);
6446         priv->vif = conf->vif;
6447
6448         spin_unlock_irqrestore(&priv->lock, flags);
6449
6450         mutex_lock(&priv->mutex);
6451
6452         if (conf->mac_addr) {
6453                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
6454                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6455         }
6456
6457         if (iwl_is_ready(priv))
6458                 iwl4965_set_mode(priv, conf->type);
6459
6460         mutex_unlock(&priv->mutex);
6461
6462         IWL_DEBUG_MAC80211("leave\n");
6463         return 0;
6464 }
6465
6466 /**
6467  * iwl4965_mac_config - mac80211 config callback
6468  *
6469  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6470  * be set inappropriately and the driver currently sets the hardware up to
6471  * use it whenever needed.
6472  */
6473 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6474 {
6475         struct iwl_priv *priv = hw->priv;
6476         const struct iwl_channel_info *ch_info;
6477         unsigned long flags;
6478         int ret = 0;
6479
6480         mutex_lock(&priv->mutex);
6481         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6482
6483         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6484
6485         if (!iwl_is_ready(priv)) {
6486                 IWL_DEBUG_MAC80211("leave - not ready\n");
6487                 ret = -EIO;
6488                 goto out;
6489         }
6490
6491         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
6492                      test_bit(STATUS_SCANNING, &priv->status))) {
6493                 IWL_DEBUG_MAC80211("leave - scanning\n");
6494                 set_bit(STATUS_CONF_PENDING, &priv->status);
6495                 mutex_unlock(&priv->mutex);
6496                 return 0;
6497         }
6498
6499         spin_lock_irqsave(&priv->lock, flags);
6500
6501         ch_info = iwl_get_channel_info(priv, conf->channel->band,
6502                         ieee80211_frequency_to_channel(conf->channel->center_freq));
6503         if (!is_channel_valid(ch_info)) {
6504                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6505                 spin_unlock_irqrestore(&priv->lock, flags);
6506                 ret = -EINVAL;
6507                 goto out;
6508         }
6509
6510 #ifdef CONFIG_IWL4965_HT
6511         /* if we are switching from ht to 2.4 clear flags
6512          * from any ht related info since 2.4 does not
6513          * support ht */
6514         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
6515 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6516             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
6517 #endif
6518         )
6519                 priv->staging_rxon.flags = 0;
6520 #endif /* CONFIG_IWL4965_HT */
6521
6522         iwlcore_set_rxon_channel(priv, conf->channel->band,
6523                 ieee80211_frequency_to_channel(conf->channel->center_freq));
6524
6525         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
6526
6527         /* The list of supported rates and rate mask can be different
6528          * for each band; since the band may have changed, reset
6529          * the rate mask to what mac80211 lists */
6530         iwl4965_set_rate(priv);
6531
6532         spin_unlock_irqrestore(&priv->lock, flags);
6533
6534 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6535         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6536                 iwl4965_hw_channel_switch(priv, conf->channel);
6537                 goto out;
6538         }
6539 #endif
6540
6541         if (priv->cfg->ops->lib->radio_kill_sw)
6542                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
6543
6544         if (!conf->radio_enabled) {
6545                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6546                 goto out;
6547         }
6548
6549         if (iwl_is_rfkill(priv)) {
6550                 IWL_DEBUG_MAC80211("leave - RF kill\n");
6551                 ret = -EIO;
6552                 goto out;
6553         }
6554
6555         iwl4965_set_rate(priv);
6556
6557         if (memcmp(&priv->active_rxon,
6558                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
6559                 iwl4965_commit_rxon(priv);
6560         else
6561                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6562
6563         IWL_DEBUG_MAC80211("leave\n");
6564
6565 out:
6566         clear_bit(STATUS_CONF_PENDING, &priv->status);
6567         mutex_unlock(&priv->mutex);
6568         return ret;
6569 }
6570
6571 static void iwl4965_config_ap(struct iwl_priv *priv)
6572 {
6573         int ret = 0;
6574
6575         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6576                 return;
6577
6578         /* The following should be done only at AP bring up */
6579         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6580
6581                 /* RXON - unassoc (to set timing command) */
6582                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6583                 iwl4965_commit_rxon(priv);
6584
6585                 /* RXON Timing */
6586                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6587                 iwl4965_setup_rxon_timing(priv);
6588                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6589                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
6590                 if (ret)
6591                         IWL_WARNING("REPLY_RXON_TIMING failed - "
6592                                         "Attempting to continue.\n");
6593
6594                 iwl4965_set_rxon_chain(priv);
6595
6596                 /* FIXME: what should be the assoc_id for AP? */
6597                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6598                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6599                         priv->staging_rxon.flags |=
6600                                 RXON_FLG_SHORT_PREAMBLE_MSK;
6601                 else
6602                         priv->staging_rxon.flags &=
6603                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6604
6605                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6606                         if (priv->assoc_capability &
6607                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6608                                 priv->staging_rxon.flags |=
6609                                         RXON_FLG_SHORT_SLOT_MSK;
6610                         else
6611                                 priv->staging_rxon.flags &=
6612                                         ~RXON_FLG_SHORT_SLOT_MSK;
6613
6614                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6615                                 priv->staging_rxon.flags &=
6616                                         ~RXON_FLG_SHORT_SLOT_MSK;
6617                 }
6618                 /* restore RXON assoc */
6619                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6620                 iwl4965_commit_rxon(priv);
6621                 iwl4965_activate_qos(priv, 1);
6622                 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
6623         }
6624         iwl4965_send_beacon_cmd(priv);
6625
6626         /* FIXME - we need to add code here to detect a totally new
6627          * configuration, reset the AP, unassoc, rxon timing, assoc,
6628          * clear sta table, add BCAST sta... */
6629 }
6630
6631 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
6632                                         struct ieee80211_vif *vif,
6633                                     struct ieee80211_if_conf *conf)
6634 {
6635         struct iwl_priv *priv = hw->priv;
6636         DECLARE_MAC_BUF(mac);
6637         unsigned long flags;
6638         int rc;
6639
6640         if (conf == NULL)
6641                 return -EIO;
6642
6643         if (priv->vif != vif) {
6644                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
6645                 mutex_unlock(&priv->mutex);
6646                 return 0;
6647         }
6648
6649         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
6650             (!conf->beacon || !conf->ssid_len)) {
6651                 IWL_DEBUG_MAC80211
6652                     ("Leaving in AP mode because HostAPD is not ready.\n");
6653                 return 0;
6654         }
6655
6656         if (!iwl_is_alive(priv))
6657                 return -EAGAIN;
6658
6659         mutex_lock(&priv->mutex);
6660
6661         if (conf->bssid)
6662                 IWL_DEBUG_MAC80211("bssid: %s\n",
6663                                    print_mac(mac, conf->bssid));
6664
6665 /*
6666  * very dubious code was here; the probe filtering flag is never set:
6667  *
6668         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6669             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6670  */
6671
6672         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6673                 if (!conf->bssid) {
6674                         conf->bssid = priv->mac_addr;
6675                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6676                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
6677                                            print_mac(mac, conf->bssid));
6678                 }
6679                 if (priv->ibss_beacon)
6680                         dev_kfree_skb(priv->ibss_beacon);
6681
6682                 priv->ibss_beacon = conf->beacon;
6683         }
6684
6685         if (iwl_is_rfkill(priv))
6686                 goto done;
6687
6688         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6689             !is_multicast_ether_addr(conf->bssid)) {
6690                 /* If there is currently a HW scan going on in the background
6691                  * then we need to cancel it else the RXON below will fail. */
6692                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
6693                         IWL_WARNING("Aborted scan still in progress "
6694                                     "after 100ms\n");
6695                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6696                         mutex_unlock(&priv->mutex);
6697                         return -EAGAIN;
6698                 }
6699                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6700
6701                 /* TODO: Audit driver for usage of these members and see
6702                  * if mac80211 deprecates them (priv->bssid looks like it
6703                  * shouldn't be there, but I haven't scanned the IBSS code
6704                  * to verify) - jpk */
6705                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6706
6707                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
6708                         iwl4965_config_ap(priv);
6709                 else {
6710                         rc = iwl4965_commit_rxon(priv);
6711                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
6712                                 iwl4965_rxon_add_station(
6713                                         priv, priv->active_rxon.bssid_addr, 1);
6714                 }
6715
6716         } else {
6717                 iwl4965_scan_cancel_timeout(priv, 100);
6718                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6719                 iwl4965_commit_rxon(priv);
6720         }
6721
6722  done:
6723         spin_lock_irqsave(&priv->lock, flags);
6724         if (!conf->ssid_len)
6725                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6726         else
6727                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
6728
6729         priv->essid_len = conf->ssid_len;
6730         spin_unlock_irqrestore(&priv->lock, flags);
6731
6732         IWL_DEBUG_MAC80211("leave\n");
6733         mutex_unlock(&priv->mutex);
6734
6735         return 0;
6736 }
6737
6738 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
6739                                  unsigned int changed_flags,
6740                                  unsigned int *total_flags,
6741                                  int mc_count, struct dev_addr_list *mc_list)
6742 {
6743         /*
6744          * XXX: dummy
6745          * see also iwl4965_connection_init_rx_config
6746          */
6747         *total_flags = 0;
6748 }
6749
6750 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
6751                                      struct ieee80211_if_init_conf *conf)
6752 {
6753         struct iwl_priv *priv = hw->priv;
6754
6755         IWL_DEBUG_MAC80211("enter\n");
6756
6757         mutex_lock(&priv->mutex);
6758
6759         if (iwl_is_ready_rf(priv)) {
6760                 iwl4965_scan_cancel_timeout(priv, 100);
6761                 cancel_delayed_work(&priv->post_associate);
6762                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6763                 iwl4965_commit_rxon(priv);
6764         }
6765         if (priv->vif == conf->vif) {
6766                 priv->vif = NULL;
6767                 memset(priv->bssid, 0, ETH_ALEN);
6768                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
6769                 priv->essid_len = 0;
6770         }
6771         mutex_unlock(&priv->mutex);
6772
6773         IWL_DEBUG_MAC80211("leave\n");
6774
6775 }
6776
6777
6778 #ifdef CONFIG_IWL4965_HT
6779 static void iwl4965_ht_conf(struct iwl_priv *priv,
6780                             struct ieee80211_bss_conf *bss_conf)
6781 {
6782         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
6783         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
6784         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
6785
6786         IWL_DEBUG_MAC80211("enter: \n");
6787
6788         iwl_conf->is_ht = bss_conf->assoc_ht;
6789
6790         if (!iwl_conf->is_ht)
6791                 return;
6792
6793         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6794
6795         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
6796                 iwl_conf->sgf |= 0x1;
6797         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
6798                 iwl_conf->sgf |= 0x2;
6799
6800         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
6801         iwl_conf->max_amsdu_size =
6802                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
6803
6804         iwl_conf->supported_chan_width =
6805                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
6806         iwl_conf->extension_chan_offset =
6807                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
6808         /* If no above or below channel supplied disable FAT channel */
6809         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
6810             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
6811                 iwl_conf->supported_chan_width = 0;
6812
6813         iwl_conf->tx_mimo_ps_mode =
6814                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
6815         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
6816
6817         iwl_conf->control_channel = ht_bss_conf->primary_channel;
6818         iwl_conf->tx_chan_width =
6819                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
6820         iwl_conf->ht_protection =
6821                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
6822         iwl_conf->non_GF_STA_present =
6823                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
6824
6825         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
6826         IWL_DEBUG_MAC80211("leave\n");
6827 }
6828 #else
6829 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
6830                                    struct ieee80211_bss_conf *bss_conf)
6831 {
6832 }
6833 #endif
6834
6835 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6836 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
6837                                      struct ieee80211_vif *vif,
6838                                      struct ieee80211_bss_conf *bss_conf,
6839                                      u32 changes)
6840 {
6841         struct iwl_priv *priv = hw->priv;
6842
6843         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6844
6845         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6846                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6847                                    bss_conf->use_short_preamble);
6848                 if (bss_conf->use_short_preamble)
6849                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6850                 else
6851                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6852         }
6853
6854         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6855                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6856                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6857                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6858                 else
6859                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6860         }
6861
6862         if (changes & BSS_CHANGED_HT) {
6863                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
6864                 iwl4965_ht_conf(priv, bss_conf);
6865                 iwl4965_set_rxon_chain(priv);
6866         }
6867
6868         if (changes & BSS_CHANGED_ASSOC) {
6869                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6870                 if (bss_conf->assoc) {
6871                         priv->assoc_id = bss_conf->aid;
6872                         priv->beacon_int = bss_conf->beacon_int;
6873                         priv->timestamp = bss_conf->timestamp;
6874                         priv->assoc_capability = bss_conf->assoc_capability;
6875                         priv->next_scan_jiffies = jiffies +
6876                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6877                         queue_work(priv->workqueue, &priv->post_associate.work);
6878                 } else {
6879                         priv->assoc_id = 0;
6880                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6881                 }
6882         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
6883                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6884                         iwl4965_send_rxon_assoc(priv);
6885         }
6886
6887 }
6888
6889 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6890 {
6891         int rc = 0;
6892         unsigned long flags;
6893         struct iwl_priv *priv = hw->priv;
6894
6895         IWL_DEBUG_MAC80211("enter\n");
6896
6897         mutex_lock(&priv->mutex);
6898         spin_lock_irqsave(&priv->lock, flags);
6899
6900         if (!iwl_is_ready_rf(priv)) {
6901                 rc = -EIO;
6902                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6903                 goto out_unlock;
6904         }
6905
6906         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
6907                 rc = -EIO;
6908                 IWL_ERROR("ERROR: APs don't scan\n");
6909                 goto out_unlock;
6910         }
6911
6912         /* we don't schedule scan within next_scan_jiffies period */
6913         if (priv->next_scan_jiffies &&
6914                         time_after(priv->next_scan_jiffies, jiffies)) {
6915                 rc = -EAGAIN;
6916                 goto out_unlock;
6917         }
6918         /* if we just finished scan ask for delay */
6919         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
6920                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
6921                 rc = -EAGAIN;
6922                 goto out_unlock;
6923         }
6924         if (len) {
6925                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6926                                iwl4965_escape_essid(ssid, len), (int)len);
6927
6928                 priv->one_direct_scan = 1;
6929                 priv->direct_ssid_len = (u8)
6930                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6931                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6932         } else
6933                 priv->one_direct_scan = 0;
6934
6935         rc = iwl4965_scan_initiate(priv);
6936
6937         IWL_DEBUG_MAC80211("leave\n");
6938
6939 out_unlock:
6940         spin_unlock_irqrestore(&priv->lock, flags);
6941         mutex_unlock(&priv->mutex);
6942
6943         return rc;
6944 }
6945
6946 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
6947                         struct ieee80211_key_conf *keyconf, const u8 *addr,
6948                         u32 iv32, u16 *phase1key)
6949 {
6950         struct iwl_priv *priv = hw->priv;
6951         u8 sta_id = IWL_INVALID_STATION;
6952         unsigned long flags;
6953         __le16 key_flags = 0;
6954         int i;
6955         DECLARE_MAC_BUF(mac);
6956
6957         IWL_DEBUG_MAC80211("enter\n");
6958
6959         sta_id = iwl4965_hw_find_station(priv, addr);
6960         if (sta_id == IWL_INVALID_STATION) {
6961                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
6962                                    print_mac(mac, addr));
6963                 return;
6964         }
6965
6966         iwl4965_scan_cancel_timeout(priv, 100);
6967
6968         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
6969         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
6970         key_flags &= ~STA_KEY_FLG_INVALID;
6971
6972         if (sta_id == priv->hw_setting.bcast_sta_id)
6973                 key_flags |= STA_KEY_MULTICAST_MSK;
6974
6975         spin_lock_irqsave(&priv->sta_lock, flags);
6976
6977         priv->stations[sta_id].sta.key.key_offset =
6978                                 iwl_get_free_ucode_key_index(priv);
6979         priv->stations[sta_id].sta.key.key_flags = key_flags;
6980         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
6981
6982         for (i = 0; i < 5; i++)
6983                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
6984                         cpu_to_le16(phase1key[i]);
6985
6986         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
6987         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
6988
6989         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
6990
6991         spin_unlock_irqrestore(&priv->sta_lock, flags);
6992
6993         IWL_DEBUG_MAC80211("leave\n");
6994 }
6995
6996 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6997                            const u8 *local_addr, const u8 *addr,
6998                            struct ieee80211_key_conf *key)
6999 {
7000         struct iwl_priv *priv = hw->priv;
7001         DECLARE_MAC_BUF(mac);
7002         int ret = 0;
7003         u8 sta_id = IWL_INVALID_STATION;
7004         u8 is_default_wep_key = 0;
7005
7006         IWL_DEBUG_MAC80211("enter\n");
7007
7008         if (!priv->cfg->mod_params->hw_crypto) {
7009                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7010                 return -EOPNOTSUPP;
7011         }
7012
7013         if (is_zero_ether_addr(addr))
7014                 /* only support pairwise keys */
7015                 return -EOPNOTSUPP;
7016
7017         sta_id = iwl4965_hw_find_station(priv, addr);
7018         if (sta_id == IWL_INVALID_STATION) {
7019                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7020                                    print_mac(mac, addr));
7021                 return -EINVAL;
7022
7023         }
7024
7025         mutex_lock(&priv->mutex);
7026         iwl4965_scan_cancel_timeout(priv, 100);
7027         mutex_unlock(&priv->mutex);
7028
7029         /* If we are getting WEP group key and we didn't receive any key mapping
7030          * so far, we are in legacy wep mode (group key only), otherwise we are
7031          * in 1X mode.
7032          * In legacy wep mode, we use another host command to the uCode */
7033         if (key->alg == ALG_WEP && sta_id == priv->hw_setting.bcast_sta_id &&
7034                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7035                 if (cmd == SET_KEY)
7036                         is_default_wep_key = !priv->key_mapping_key;
7037                 else
7038                         is_default_wep_key = priv->default_wep_key;
7039         }
7040
7041         switch (cmd) {
7042         case SET_KEY:
7043                 if (is_default_wep_key)
7044                         ret = iwl_set_default_wep_key(priv, key);
7045                 else
7046                         ret = iwl4965_set_dynamic_key(priv, key, sta_id);
7047
7048                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
7049                 break;
7050         case DISABLE_KEY:
7051                 if (is_default_wep_key)
7052                         ret = iwl_remove_default_wep_key(priv, key);
7053                 else
7054                         ret = iwl4965_clear_sta_key_info(priv, sta_id);
7055
7056                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7057                 break;
7058         default:
7059                 ret = -EINVAL;
7060         }
7061
7062         IWL_DEBUG_MAC80211("leave\n");
7063
7064         return ret;
7065 }
7066
7067 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7068                            const struct ieee80211_tx_queue_params *params)
7069 {
7070         struct iwl_priv *priv = hw->priv;
7071         unsigned long flags;
7072         int q;
7073
7074         IWL_DEBUG_MAC80211("enter\n");
7075
7076         if (!iwl_is_ready_rf(priv)) {
7077                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7078                 return -EIO;
7079         }
7080
7081         if (queue >= AC_NUM) {
7082                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7083                 return 0;
7084         }
7085
7086         if (!priv->qos_data.qos_enable) {
7087                 priv->qos_data.qos_active = 0;
7088                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7089                 return 0;
7090         }
7091         q = AC_NUM - 1 - queue;
7092
7093         spin_lock_irqsave(&priv->lock, flags);
7094
7095         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7096         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7097         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7098         priv->qos_data.def_qos_parm.ac[q].edca_txop =
7099                         cpu_to_le16((params->txop * 32));
7100
7101         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7102         priv->qos_data.qos_active = 1;
7103
7104         spin_unlock_irqrestore(&priv->lock, flags);
7105
7106         mutex_lock(&priv->mutex);
7107         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7108                 iwl4965_activate_qos(priv, 1);
7109         else if (priv->assoc_id && iwl_is_associated(priv))
7110                 iwl4965_activate_qos(priv, 0);
7111
7112         mutex_unlock(&priv->mutex);
7113
7114         IWL_DEBUG_MAC80211("leave\n");
7115         return 0;
7116 }
7117
7118 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7119                                 struct ieee80211_tx_queue_stats *stats)
7120 {
7121         struct iwl_priv *priv = hw->priv;
7122         int i, avail;
7123         struct iwl4965_tx_queue *txq;
7124         struct iwl4965_queue *q;
7125         unsigned long flags;
7126
7127         IWL_DEBUG_MAC80211("enter\n");
7128
7129         if (!iwl_is_ready_rf(priv)) {
7130                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7131                 return -EIO;
7132         }
7133
7134         spin_lock_irqsave(&priv->lock, flags);
7135
7136         for (i = 0; i < AC_NUM; i++) {
7137                 txq = &priv->txq[i];
7138                 q = &txq->q;
7139                 avail = iwl4965_queue_space(q);
7140
7141                 stats->data[i].len = q->n_window - avail;
7142                 stats->data[i].limit = q->n_window - q->high_mark;
7143                 stats->data[i].count = q->n_window;
7144
7145         }
7146         spin_unlock_irqrestore(&priv->lock, flags);
7147
7148         IWL_DEBUG_MAC80211("leave\n");
7149
7150         return 0;
7151 }
7152
7153 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7154                              struct ieee80211_low_level_stats *stats)
7155 {
7156         IWL_DEBUG_MAC80211("enter\n");
7157         IWL_DEBUG_MAC80211("leave\n");
7158
7159         return 0;
7160 }
7161
7162 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7163 {
7164         IWL_DEBUG_MAC80211("enter\n");
7165         IWL_DEBUG_MAC80211("leave\n");
7166
7167         return 0;
7168 }
7169
7170 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7171 {
7172         struct iwl_priv *priv = hw->priv;
7173         unsigned long flags;
7174
7175         mutex_lock(&priv->mutex);
7176         IWL_DEBUG_MAC80211("enter\n");
7177
7178         priv->lq_mngr.lq_ready = 0;
7179 #ifdef CONFIG_IWL4965_HT
7180         spin_lock_irqsave(&priv->lock, flags);
7181         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7182         spin_unlock_irqrestore(&priv->lock, flags);
7183 #endif /* CONFIG_IWL4965_HT */
7184
7185         iwlcore_reset_qos(priv);
7186
7187         cancel_delayed_work(&priv->post_associate);
7188
7189         spin_lock_irqsave(&priv->lock, flags);
7190         priv->assoc_id = 0;
7191         priv->assoc_capability = 0;
7192         priv->assoc_station_added = 0;
7193
7194         /* new association get rid of ibss beacon skb */
7195         if (priv->ibss_beacon)
7196                 dev_kfree_skb(priv->ibss_beacon);
7197
7198         priv->ibss_beacon = NULL;
7199
7200         priv->beacon_int = priv->hw->conf.beacon_int;
7201         priv->timestamp = 0;
7202         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7203                 priv->beacon_int = 0;
7204
7205         spin_unlock_irqrestore(&priv->lock, flags);
7206
7207         if (!iwl_is_ready_rf(priv)) {
7208                 IWL_DEBUG_MAC80211("leave - not ready\n");
7209                 mutex_unlock(&priv->mutex);
7210                 return;
7211         }
7212
7213         /* we are restarting association process
7214          * clear RXON_FILTER_ASSOC_MSK bit
7215          */
7216         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7217                 iwl4965_scan_cancel_timeout(priv, 100);
7218                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7219                 iwl4965_commit_rxon(priv);
7220         }
7221
7222         /* Per mac80211.h: This is only used in IBSS mode... */
7223         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7224
7225                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7226                 mutex_unlock(&priv->mutex);
7227                 return;
7228         }
7229
7230         priv->only_active_channel = 0;
7231
7232         iwl4965_set_rate(priv);
7233
7234         mutex_unlock(&priv->mutex);
7235
7236         IWL_DEBUG_MAC80211("leave\n");
7237 }
7238
7239 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7240                                  struct ieee80211_tx_control *control)
7241 {
7242         struct iwl_priv *priv = hw->priv;
7243         unsigned long flags;
7244
7245         mutex_lock(&priv->mutex);
7246         IWL_DEBUG_MAC80211("enter\n");
7247
7248         if (!iwl_is_ready_rf(priv)) {
7249                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7250                 mutex_unlock(&priv->mutex);
7251                 return -EIO;
7252         }
7253
7254         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7255                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7256                 mutex_unlock(&priv->mutex);
7257                 return -EIO;
7258         }
7259
7260         spin_lock_irqsave(&priv->lock, flags);
7261
7262         if (priv->ibss_beacon)
7263                 dev_kfree_skb(priv->ibss_beacon);
7264
7265         priv->ibss_beacon = skb;
7266
7267         priv->assoc_id = 0;
7268
7269         IWL_DEBUG_MAC80211("leave\n");
7270         spin_unlock_irqrestore(&priv->lock, flags);
7271
7272         iwlcore_reset_qos(priv);
7273
7274         queue_work(priv->workqueue, &priv->post_associate.work);
7275
7276         mutex_unlock(&priv->mutex);
7277
7278         return 0;
7279 }
7280
7281 /*****************************************************************************
7282  *
7283  * sysfs attributes
7284  *
7285  *****************************************************************************/
7286
7287 #ifdef CONFIG_IWLWIFI_DEBUG
7288
7289 /*
7290  * The following adds a new attribute to the sysfs representation
7291  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7292  * used for controlling the debug level.
7293  *
7294  * See the level definitions in iwl for details.
7295  */
7296
7297 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7298 {
7299         return sprintf(buf, "0x%08X\n", iwl_debug_level);
7300 }
7301 static ssize_t store_debug_level(struct device_driver *d,
7302                                  const char *buf, size_t count)
7303 {
7304         char *p = (char *)buf;
7305         u32 val;
7306
7307         val = simple_strtoul(p, &p, 0);
7308         if (p == buf)
7309                 printk(KERN_INFO DRV_NAME
7310                        ": %s is not in hex or decimal form.\n", buf);
7311         else
7312                 iwl_debug_level = val;
7313
7314         return strnlen(buf, count);
7315 }
7316
7317 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7318                    show_debug_level, store_debug_level);
7319
7320 #endif /* CONFIG_IWLWIFI_DEBUG */
7321
7322
7323 static ssize_t show_temperature(struct device *d,
7324                                 struct device_attribute *attr, char *buf)
7325 {
7326         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7327
7328         if (!iwl_is_alive(priv))
7329                 return -EAGAIN;
7330
7331         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
7332 }
7333
7334 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7335
7336 static ssize_t show_rs_window(struct device *d,
7337                               struct device_attribute *attr,
7338                               char *buf)
7339 {
7340         struct iwl_priv *priv = d->driver_data;
7341         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7342 }
7343 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7344
7345 static ssize_t show_tx_power(struct device *d,
7346                              struct device_attribute *attr, char *buf)
7347 {
7348         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7349         return sprintf(buf, "%d\n", priv->user_txpower_limit);
7350 }
7351
7352 static ssize_t store_tx_power(struct device *d,
7353                               struct device_attribute *attr,
7354                               const char *buf, size_t count)
7355 {
7356         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7357         char *p = (char *)buf;
7358         u32 val;
7359
7360         val = simple_strtoul(p, &p, 10);
7361         if (p == buf)
7362                 printk(KERN_INFO DRV_NAME
7363                        ": %s is not in decimal form.\n", buf);
7364         else
7365                 iwl4965_hw_reg_set_txpower(priv, val);
7366
7367         return count;
7368 }
7369
7370 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7371
7372 static ssize_t show_flags(struct device *d,
7373                           struct device_attribute *attr, char *buf)
7374 {
7375         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7376
7377         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7378 }
7379
7380 static ssize_t store_flags(struct device *d,
7381                            struct device_attribute *attr,
7382                            const char *buf, size_t count)
7383 {
7384         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7385         u32 flags = simple_strtoul(buf, NULL, 0);
7386
7387         mutex_lock(&priv->mutex);
7388         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7389                 /* Cancel any currently running scans... */
7390                 if (iwl4965_scan_cancel_timeout(priv, 100))
7391                         IWL_WARNING("Could not cancel scan.\n");
7392                 else {
7393                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7394                                        flags);
7395                         priv->staging_rxon.flags = cpu_to_le32(flags);
7396                         iwl4965_commit_rxon(priv);
7397                 }
7398         }
7399         mutex_unlock(&priv->mutex);
7400
7401         return count;
7402 }
7403
7404 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7405
7406 static ssize_t show_filter_flags(struct device *d,
7407                                  struct device_attribute *attr, char *buf)
7408 {
7409         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7410
7411         return sprintf(buf, "0x%04X\n",
7412                 le32_to_cpu(priv->active_rxon.filter_flags));
7413 }
7414
7415 static ssize_t store_filter_flags(struct device *d,
7416                                   struct device_attribute *attr,
7417                                   const char *buf, size_t count)
7418 {
7419         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7420         u32 filter_flags = simple_strtoul(buf, NULL, 0);
7421
7422         mutex_lock(&priv->mutex);
7423         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7424                 /* Cancel any currently running scans... */
7425                 if (iwl4965_scan_cancel_timeout(priv, 100))
7426                         IWL_WARNING("Could not cancel scan.\n");
7427                 else {
7428                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7429                                        "0x%04X\n", filter_flags);
7430                         priv->staging_rxon.filter_flags =
7431                                 cpu_to_le32(filter_flags);
7432                         iwl4965_commit_rxon(priv);
7433                 }
7434         }
7435         mutex_unlock(&priv->mutex);
7436
7437         return count;
7438 }
7439
7440 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7441                    store_filter_flags);
7442
7443 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7444
7445 static ssize_t show_measurement(struct device *d,
7446                                 struct device_attribute *attr, char *buf)
7447 {
7448         struct iwl_priv *priv = dev_get_drvdata(d);
7449         struct iwl4965_spectrum_notification measure_report;
7450         u32 size = sizeof(measure_report), len = 0, ofs = 0;
7451         u8 *data = (u8 *) & measure_report;
7452         unsigned long flags;
7453
7454         spin_lock_irqsave(&priv->lock, flags);
7455         if (!(priv->measurement_status & MEASUREMENT_READY)) {
7456                 spin_unlock_irqrestore(&priv->lock, flags);
7457                 return 0;
7458         }
7459         memcpy(&measure_report, &priv->measure_report, size);
7460         priv->measurement_status = 0;
7461         spin_unlock_irqrestore(&priv->lock, flags);
7462
7463         while (size && (PAGE_SIZE - len)) {
7464                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7465                                    PAGE_SIZE - len, 1);
7466                 len = strlen(buf);
7467                 if (PAGE_SIZE - len)
7468                         buf[len++] = '\n';
7469
7470                 ofs += 16;
7471                 size -= min(size, 16U);
7472         }
7473
7474         return len;
7475 }
7476
7477 static ssize_t store_measurement(struct device *d,
7478                                  struct device_attribute *attr,
7479                                  const char *buf, size_t count)
7480 {
7481         struct iwl_priv *priv = dev_get_drvdata(d);
7482         struct ieee80211_measurement_params params = {
7483                 .channel = le16_to_cpu(priv->active_rxon.channel),
7484                 .start_time = cpu_to_le64(priv->last_tsf),
7485                 .duration = cpu_to_le16(1),
7486         };
7487         u8 type = IWL_MEASURE_BASIC;
7488         u8 buffer[32];
7489         u8 channel;
7490
7491         if (count) {
7492                 char *p = buffer;
7493                 strncpy(buffer, buf, min(sizeof(buffer), count));
7494                 channel = simple_strtoul(p, NULL, 0);
7495                 if (channel)
7496                         params.channel = channel;
7497
7498                 p = buffer;
7499                 while (*p && *p != ' ')
7500                         p++;
7501                 if (*p)
7502                         type = simple_strtoul(p + 1, NULL, 0);
7503         }
7504
7505         IWL_DEBUG_INFO("Invoking measurement of type %d on "
7506                        "channel %d (for '%s')\n", type, params.channel, buf);
7507         iwl4965_get_measurement(priv, &params, type);
7508
7509         return count;
7510 }
7511
7512 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7513                    show_measurement, store_measurement);
7514 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
7515
7516 static ssize_t store_retry_rate(struct device *d,
7517                                 struct device_attribute *attr,
7518                                 const char *buf, size_t count)
7519 {
7520         struct iwl_priv *priv = dev_get_drvdata(d);
7521
7522         priv->retry_rate = simple_strtoul(buf, NULL, 0);
7523         if (priv->retry_rate <= 0)
7524                 priv->retry_rate = 1;
7525
7526         return count;
7527 }
7528
7529 static ssize_t show_retry_rate(struct device *d,
7530                                struct device_attribute *attr, char *buf)
7531 {
7532         struct iwl_priv *priv = dev_get_drvdata(d);
7533         return sprintf(buf, "%d", priv->retry_rate);
7534 }
7535
7536 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7537                    store_retry_rate);
7538
7539 static ssize_t store_power_level(struct device *d,
7540                                  struct device_attribute *attr,
7541                                  const char *buf, size_t count)
7542 {
7543         struct iwl_priv *priv = dev_get_drvdata(d);
7544         int rc;
7545         int mode;
7546
7547         mode = simple_strtoul(buf, NULL, 0);
7548         mutex_lock(&priv->mutex);
7549
7550         if (!iwl_is_ready(priv)) {
7551                 rc = -EAGAIN;
7552                 goto out;
7553         }
7554
7555         if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7556                 mode = IWL_POWER_AC;
7557         else
7558                 mode |= IWL_POWER_ENABLED;
7559
7560         if (mode != priv->power_mode) {
7561                 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7562                 if (rc) {
7563                         IWL_DEBUG_MAC80211("failed setting power mode.\n");
7564                         goto out;
7565                 }
7566                 priv->power_mode = mode;
7567         }
7568
7569         rc = count;
7570
7571  out:
7572         mutex_unlock(&priv->mutex);
7573         return rc;
7574 }
7575
7576 #define MAX_WX_STRING 80
7577
7578 /* Values are in microsecond */
7579 static const s32 timeout_duration[] = {
7580         350000,
7581         250000,
7582         75000,
7583         37000,
7584         25000,
7585 };
7586 static const s32 period_duration[] = {
7587         400000,
7588         700000,
7589         1000000,
7590         1000000,
7591         1000000
7592 };
7593
7594 static ssize_t show_power_level(struct device *d,
7595                                 struct device_attribute *attr, char *buf)
7596 {
7597         struct iwl_priv *priv = dev_get_drvdata(d);
7598         int level = IWL_POWER_LEVEL(priv->power_mode);
7599         char *p = buf;
7600
7601         p += sprintf(p, "%d ", level);
7602         switch (level) {
7603         case IWL_POWER_MODE_CAM:
7604         case IWL_POWER_AC:
7605                 p += sprintf(p, "(AC)");
7606                 break;
7607         case IWL_POWER_BATTERY:
7608                 p += sprintf(p, "(BATTERY)");
7609                 break;
7610         default:
7611                 p += sprintf(p,
7612                              "(Timeout %dms, Period %dms)",
7613                              timeout_duration[level - 1] / 1000,
7614                              period_duration[level - 1] / 1000);
7615         }
7616
7617         if (!(priv->power_mode & IWL_POWER_ENABLED))
7618                 p += sprintf(p, " OFF\n");
7619         else
7620                 p += sprintf(p, " \n");
7621
7622         return (p - buf + 1);
7623
7624 }
7625
7626 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7627                    store_power_level);
7628
7629 static ssize_t show_channels(struct device *d,
7630                              struct device_attribute *attr, char *buf)
7631 {
7632         /* all this shit doesn't belong into sysfs anyway */
7633         return 0;
7634 }
7635
7636 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7637
7638 static ssize_t show_statistics(struct device *d,
7639                                struct device_attribute *attr, char *buf)
7640 {
7641         struct iwl_priv *priv = dev_get_drvdata(d);
7642         u32 size = sizeof(struct iwl4965_notif_statistics);
7643         u32 len = 0, ofs = 0;
7644         u8 *data = (u8 *) & priv->statistics;
7645         int rc = 0;
7646
7647         if (!iwl_is_alive(priv))
7648                 return -EAGAIN;
7649
7650         mutex_lock(&priv->mutex);
7651         rc = iwl4965_send_statistics_request(priv);
7652         mutex_unlock(&priv->mutex);
7653
7654         if (rc) {
7655                 len = sprintf(buf,
7656                               "Error sending statistics request: 0x%08X\n", rc);
7657                 return len;
7658         }
7659
7660         while (size && (PAGE_SIZE - len)) {
7661                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7662                                    PAGE_SIZE - len, 1);
7663                 len = strlen(buf);
7664                 if (PAGE_SIZE - len)
7665                         buf[len++] = '\n';
7666
7667                 ofs += 16;
7668                 size -= min(size, 16U);
7669         }
7670
7671         return len;
7672 }
7673
7674 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7675
7676 static ssize_t show_antenna(struct device *d,
7677                             struct device_attribute *attr, char *buf)
7678 {
7679         struct iwl_priv *priv = dev_get_drvdata(d);
7680
7681         if (!iwl_is_alive(priv))
7682                 return -EAGAIN;
7683
7684         return sprintf(buf, "%d\n", priv->antenna);
7685 }
7686
7687 static ssize_t store_antenna(struct device *d,
7688                              struct device_attribute *attr,
7689                              const char *buf, size_t count)
7690 {
7691         int ant;
7692         struct iwl_priv *priv = dev_get_drvdata(d);
7693
7694         if (count == 0)
7695                 return 0;
7696
7697         if (sscanf(buf, "%1i", &ant) != 1) {
7698                 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7699                 return count;
7700         }
7701
7702         if ((ant >= 0) && (ant <= 2)) {
7703                 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7704                 priv->antenna = (enum iwl4965_antenna)ant;
7705         } else
7706                 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7707
7708
7709         return count;
7710 }
7711
7712 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7713
7714 static ssize_t show_status(struct device *d,
7715                            struct device_attribute *attr, char *buf)
7716 {
7717         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7718         if (!iwl_is_alive(priv))
7719                 return -EAGAIN;
7720         return sprintf(buf, "0x%08x\n", (int)priv->status);
7721 }
7722
7723 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7724
7725 static ssize_t dump_error_log(struct device *d,
7726                               struct device_attribute *attr,
7727                               const char *buf, size_t count)
7728 {
7729         char *p = (char *)buf;
7730
7731         if (p[0] == '1')
7732                 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
7733
7734         return strnlen(buf, count);
7735 }
7736
7737 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7738
7739 static ssize_t dump_event_log(struct device *d,
7740                               struct device_attribute *attr,
7741                               const char *buf, size_t count)
7742 {
7743         char *p = (char *)buf;
7744
7745         if (p[0] == '1')
7746                 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
7747
7748         return strnlen(buf, count);
7749 }
7750
7751 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7752
7753 /*****************************************************************************
7754  *
7755  * driver setup and teardown
7756  *
7757  *****************************************************************************/
7758
7759 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
7760 {
7761         priv->workqueue = create_workqueue(DRV_NAME);
7762
7763         init_waitqueue_head(&priv->wait_command_queue);
7764
7765         INIT_WORK(&priv->up, iwl4965_bg_up);
7766         INIT_WORK(&priv->restart, iwl4965_bg_restart);
7767         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
7768         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
7769         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
7770         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
7771         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
7772         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
7773         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
7774         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
7775         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
7776         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
7777
7778         iwl4965_hw_setup_deferred_work(priv);
7779
7780         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7781                      iwl4965_irq_tasklet, (unsigned long)priv);
7782 }
7783
7784 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
7785 {
7786         iwl4965_hw_cancel_deferred_work(priv);
7787
7788         cancel_delayed_work_sync(&priv->init_alive_start);
7789         cancel_delayed_work(&priv->scan_check);
7790         cancel_delayed_work(&priv->alive_start);
7791         cancel_delayed_work(&priv->post_associate);
7792         cancel_work_sync(&priv->beacon_update);
7793 }
7794
7795 static struct attribute *iwl4965_sysfs_entries[] = {
7796         &dev_attr_antenna.attr,
7797         &dev_attr_channels.attr,
7798         &dev_attr_dump_errors.attr,
7799         &dev_attr_dump_events.attr,
7800         &dev_attr_flags.attr,
7801         &dev_attr_filter_flags.attr,
7802 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
7803         &dev_attr_measurement.attr,
7804 #endif
7805         &dev_attr_power_level.attr,
7806         &dev_attr_retry_rate.attr,
7807         &dev_attr_rs_window.attr,
7808         &dev_attr_statistics.attr,
7809         &dev_attr_status.attr,
7810         &dev_attr_temperature.attr,
7811         &dev_attr_tx_power.attr,
7812
7813         NULL
7814 };
7815
7816 static struct attribute_group iwl4965_attribute_group = {
7817         .name = NULL,           /* put in device directory */
7818         .attrs = iwl4965_sysfs_entries,
7819 };
7820
7821 static struct ieee80211_ops iwl4965_hw_ops = {
7822         .tx = iwl4965_mac_tx,
7823         .start = iwl4965_mac_start,
7824         .stop = iwl4965_mac_stop,
7825         .add_interface = iwl4965_mac_add_interface,
7826         .remove_interface = iwl4965_mac_remove_interface,
7827         .config = iwl4965_mac_config,
7828         .config_interface = iwl4965_mac_config_interface,
7829         .configure_filter = iwl4965_configure_filter,
7830         .set_key = iwl4965_mac_set_key,
7831         .update_tkip_key = iwl4965_mac_update_tkip_key,
7832         .get_stats = iwl4965_mac_get_stats,
7833         .get_tx_stats = iwl4965_mac_get_tx_stats,
7834         .conf_tx = iwl4965_mac_conf_tx,
7835         .get_tsf = iwl4965_mac_get_tsf,
7836         .reset_tsf = iwl4965_mac_reset_tsf,
7837         .beacon_update = iwl4965_mac_beacon_update,
7838         .bss_info_changed = iwl4965_bss_info_changed,
7839 #ifdef CONFIG_IWL4965_HT
7840         .ampdu_action = iwl4965_mac_ampdu_action,
7841 #endif  /* CONFIG_IWL4965_HT */
7842         .hw_scan = iwl4965_mac_hw_scan
7843 };
7844
7845 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7846 {
7847         int err = 0;
7848         struct iwl_priv *priv;
7849         struct ieee80211_hw *hw;
7850         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7851         unsigned long flags;
7852         DECLARE_MAC_BUF(mac);
7853
7854         /************************
7855          * 1. Allocating HW data
7856          ************************/
7857
7858         /* Disabling hardware scan means that mac80211 will perform scans
7859          * "the hard way", rather than using device's scan. */
7860         if (cfg->mod_params->disable_hw_scan) {
7861                 IWL_DEBUG_INFO("Disabling hw_scan\n");
7862                 iwl4965_hw_ops.hw_scan = NULL;
7863         }
7864
7865         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
7866         if (!hw) {
7867                 err = -ENOMEM;
7868                 goto out;
7869         }
7870         priv = hw->priv;
7871         /* At this point both hw and priv are allocated. */
7872
7873         SET_IEEE80211_DEV(hw, &pdev->dev);
7874
7875         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7876         priv->cfg = cfg;
7877         priv->pci_dev = pdev;
7878
7879 #ifdef CONFIG_IWLWIFI_DEBUG
7880         iwl_debug_level = priv->cfg->mod_params->debug;
7881         atomic_set(&priv->restrict_refcnt, 0);
7882 #endif
7883
7884         /**************************
7885          * 2. Initializing PCI bus
7886          **************************/
7887         if (pci_enable_device(pdev)) {
7888                 err = -ENODEV;
7889                 goto out_ieee80211_free_hw;
7890         }
7891
7892         pci_set_master(pdev);
7893
7894         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7895         if (!err)
7896                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7897                 if (err) {
7898                         printk(KERN_WARNING DRV_NAME
7899                                 ": No suitable DMA available.\n");
7900                         goto out_pci_disable_device;
7901         }
7902
7903         err = pci_request_regions(pdev, DRV_NAME);
7904         if (err)
7905                 goto out_pci_disable_device;
7906
7907         pci_set_drvdata(pdev, priv);
7908
7909         /* We disable the RETRY_TIMEOUT register (0x41) to keep
7910          * PCI Tx retries from interfering with C3 CPU state */
7911         pci_write_config_byte(pdev, 0x41, 0x00);
7912
7913         /***********************
7914          * 3. Read REV register
7915          ***********************/
7916         priv->hw_base = pci_iomap(pdev, 0, 0);
7917         if (!priv->hw_base) {
7918                 err = -ENODEV;
7919                 goto out_pci_release_regions;
7920         }
7921
7922         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7923                 (unsigned long long) pci_resource_len(pdev, 0));
7924         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7925
7926         printk(KERN_INFO DRV_NAME
7927                 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7928
7929         /*****************
7930          * 4. Read EEPROM
7931          *****************/
7932         /* nic init */
7933         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7934                 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
7935
7936         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7937         err = iwl_poll_bit(priv, CSR_GP_CNTRL,
7938                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
7939                 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7940         if (err < 0) {
7941                 IWL_DEBUG_INFO("Failed to init the card\n");
7942                 goto out_iounmap;
7943         }
7944         /* Read the EEPROM */
7945         err = iwl_eeprom_init(priv);
7946         if (err) {
7947                 IWL_ERROR("Unable to init EEPROM\n");
7948                 goto out_iounmap;
7949         }
7950         /* MAC Address location in EEPROM same for 3945/4965 */
7951         iwl_eeprom_get_mac(priv, priv->mac_addr);
7952         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
7953         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7954
7955         /************************
7956          * 5. Setup HW constants
7957          ************************/
7958         /* Device-specific setup */
7959         if (iwl4965_hw_set_hw_setting(priv)) {
7960                 IWL_ERROR("failed to set hw settings\n");
7961                 goto out_iounmap;
7962         }
7963
7964         /*******************
7965          * 6. Setup hw/priv
7966          *******************/
7967
7968         err = iwl_setup(priv);
7969         if (err)
7970                 goto out_unset_hw_settings;
7971         /* At this point both hw and priv are initialized. */
7972
7973         /**********************************
7974          * 7. Initialize module parameters
7975          **********************************/
7976
7977         /* Disable radio (SW RF KILL) via parameter when loading driver */
7978         if (priv->cfg->mod_params->disable) {
7979                 set_bit(STATUS_RF_KILL_SW, &priv->status);
7980                 IWL_DEBUG_INFO("Radio disabled.\n");
7981         }
7982
7983         if (priv->cfg->mod_params->enable_qos)
7984                 priv->qos_data.qos_enable = 1;
7985
7986         /********************
7987          * 8. Setup services
7988          ********************/
7989         spin_lock_irqsave(&priv->lock, flags);
7990         iwl4965_disable_interrupts(priv);
7991         spin_unlock_irqrestore(&priv->lock, flags);
7992
7993         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
7994         if (err) {
7995                 IWL_ERROR("failed to create sysfs device attributes\n");
7996                 goto out_unset_hw_settings;
7997         }
7998
7999         err = iwl_dbgfs_register(priv, DRV_NAME);
8000         if (err) {
8001                 IWL_ERROR("failed to create debugfs files\n");
8002                 goto out_remove_sysfs;
8003         }
8004
8005         iwl4965_setup_deferred_work(priv);
8006         iwl4965_setup_rx_handlers(priv);
8007
8008         /********************
8009          * 9. Conclude
8010          ********************/
8011         pci_save_state(pdev);
8012         pci_disable_device(pdev);
8013
8014         /* notify iwlcore to init */
8015         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
8016         return 0;
8017
8018  out_remove_sysfs:
8019         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8020  out_unset_hw_settings:
8021         iwl4965_unset_hw_setting(priv);
8022  out_iounmap:
8023         pci_iounmap(pdev, priv->hw_base);
8024  out_pci_release_regions:
8025         pci_release_regions(pdev);
8026         pci_set_drvdata(pdev, NULL);
8027  out_pci_disable_device:
8028         pci_disable_device(pdev);
8029  out_ieee80211_free_hw:
8030         ieee80211_free_hw(priv->hw);
8031  out:
8032         return err;
8033 }
8034
8035 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
8036 {
8037         struct iwl_priv *priv = pci_get_drvdata(pdev);
8038         struct list_head *p, *q;
8039         int i;
8040         unsigned long flags;
8041
8042         if (!priv)
8043                 return;
8044
8045         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8046
8047         if (priv->mac80211_registered) {
8048                 ieee80211_unregister_hw(priv->hw);
8049                 priv->mac80211_registered = 0;
8050         }
8051
8052         set_bit(STATUS_EXIT_PENDING, &priv->status);
8053
8054         iwl4965_down(priv);
8055
8056         /* make sure we flush any pending irq or
8057          * tasklet for the driver
8058          */
8059         spin_lock_irqsave(&priv->lock, flags);
8060         iwl4965_disable_interrupts(priv);
8061         spin_unlock_irqrestore(&priv->lock, flags);
8062
8063         iwl_synchronize_irq(priv);
8064
8065         /* Free MAC hash list for ADHOC */
8066         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8067                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8068                         list_del(p);
8069                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8070                 }
8071         }
8072
8073         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
8074         iwl_dbgfs_unregister(priv);
8075         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8076
8077         iwl4965_dealloc_ucode_pci(priv);
8078
8079         if (priv->rxq.bd)
8080                 iwl4965_rx_queue_free(priv, &priv->rxq);
8081         iwl4965_hw_txq_ctx_free(priv);
8082
8083         iwl4965_unset_hw_setting(priv);
8084         iwlcore_clear_stations_table(priv);
8085
8086
8087         /*netif_stop_queue(dev); */
8088         flush_workqueue(priv->workqueue);
8089
8090         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8091          * priv->workqueue... so we can't take down the workqueue
8092          * until now... */
8093         destroy_workqueue(priv->workqueue);
8094         priv->workqueue = NULL;
8095
8096         pci_iounmap(pdev, priv->hw_base);
8097         pci_release_regions(pdev);
8098         pci_disable_device(pdev);
8099         pci_set_drvdata(pdev, NULL);
8100
8101         iwl_free_channel_map(priv);
8102         iwl4965_free_geos(priv);
8103
8104         if (priv->ibss_beacon)
8105                 dev_kfree_skb(priv->ibss_beacon);
8106
8107         ieee80211_free_hw(priv->hw);
8108 }
8109
8110 #ifdef CONFIG_PM
8111
8112 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8113 {
8114         struct iwl_priv *priv = pci_get_drvdata(pdev);
8115
8116         if (priv->is_open) {
8117                 set_bit(STATUS_IN_SUSPEND, &priv->status);
8118                 iwl4965_mac_stop(priv->hw);
8119                 priv->is_open = 1;
8120         }
8121
8122         pci_set_power_state(pdev, PCI_D3hot);
8123
8124         return 0;
8125 }
8126
8127 static int iwl4965_pci_resume(struct pci_dev *pdev)
8128 {
8129         struct iwl_priv *priv = pci_get_drvdata(pdev);
8130
8131         pci_set_power_state(pdev, PCI_D0);
8132
8133         if (priv->is_open)
8134                 iwl4965_mac_start(priv->hw);
8135
8136         clear_bit(STATUS_IN_SUSPEND, &priv->status);
8137         return 0;
8138 }
8139
8140 #endif /* CONFIG_PM */
8141
8142 /*****************************************************************************
8143  *
8144  * driver and module entry point
8145  *
8146  *****************************************************************************/
8147
8148 static struct pci_driver iwl4965_driver = {
8149         .name = DRV_NAME,
8150         .id_table = iwl4965_hw_card_ids,
8151         .probe = iwl4965_pci_probe,
8152         .remove = __devexit_p(iwl4965_pci_remove),
8153 #ifdef CONFIG_PM
8154         .suspend = iwl4965_pci_suspend,
8155         .resume = iwl4965_pci_resume,
8156 #endif
8157 };
8158
8159 static int __init iwl4965_init(void)
8160 {
8161
8162         int ret;
8163         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8164         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8165
8166         ret = iwl4965_rate_control_register();
8167         if (ret) {
8168                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
8169                 return ret;
8170         }
8171
8172         ret = pci_register_driver(&iwl4965_driver);
8173         if (ret) {
8174                 IWL_ERROR("Unable to initialize PCI module\n");
8175                 goto error_register;
8176         }
8177 #ifdef CONFIG_IWLWIFI_DEBUG
8178         ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8179         if (ret) {
8180                 IWL_ERROR("Unable to create driver sysfs file\n");
8181                 goto error_debug;
8182         }
8183 #endif
8184
8185         return ret;
8186
8187 #ifdef CONFIG_IWLWIFI_DEBUG
8188 error_debug:
8189         pci_unregister_driver(&iwl4965_driver);
8190 #endif
8191 error_register:
8192         iwl4965_rate_control_unregister();
8193         return ret;
8194 }
8195
8196 static void __exit iwl4965_exit(void)
8197 {
8198 #ifdef CONFIG_IWLWIFI_DEBUG
8199         driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8200 #endif
8201         pci_unregister_driver(&iwl4965_driver);
8202         iwl4965_rate_control_unregister();
8203 }
8204
8205 module_exit(iwl4965_exit);
8206 module_init(iwl4965_init);